Pay attention to the suitability of choosing ppe

formworks for building construction  

Material	Aluminum 6061-T6
Certification	CE
	GS
Applications	Construction
Safe working load	60KN/Meter
Min Oder	500 Square Meter
Suppy ability	10000 Square Meters/months
Features	Easy to Handle  One-time Pouring  High Concrete Pouring Rate  More Reuses  Great Recyclable Value  Environmental Friendly

Security Window Screening

Security Window Screening, SGS Security Window Screen, China Security Window Screening

Anping County ShunXing Hardware Wire Mesh Co., Ltd. , http://www.shunxing-fence.com

In 2004, the state introduced the fertilizer price limit policy six times, but the fertilizer price still rose 15.8% year-on-year. In 2005, the price limit policy was more than last year, but from the market reaction, the price of fertilizer still rose significantly. Along with the introduction of fertilizer price increase and price limit policies, the fertilizer market has continued to fluctuate. This has also caused the issue of fertilizer prices to receive more attention. In the contest between market behavior and policy leverage, the price limit policy has become more and more “unsatisfactory,” and the vast majority of production companies and farmers who are the main body of supply and demand for chemical fertilizers have not obtained the expected benefits. Enterprises have complained and the farmers have complained. So, who is the "Pandora Box" who opened the fertilizer?
In fact, this "Pandora Box" is a mixture of various contradictions. The fluctuation of the price of fertilizer has highlighted various conflicts and gradually intensified. In the case of sharp increases in the prices of coal and other energy and raw materials, tight rail capacity, and rising freight rates for roads, how to take into account the interests of producers, operators, and farmers, and control the price of fertilizer at a reasonable level is in front of macro-control departments. The dilemma.
From the perspective of chemical fertilizer production and consumption, the crux of the failure of the fertilizer price limit policy is reflected in the following aspects:
First, the "departmental linkage" required for policy implementation is difficult to operate. Fertilizer is a commodity that has the special property of “grain food”. The regulation of fertilizer prices involves the departments of industry and commerce, commodity prices, finance, taxation, railways, supply and marketing, and electricity, and achieving a complete linkage process is a complex system project. The desired results can only be achieved on the basis of maintaining a smooth government decree and unitary action. Judging from the actual situation, the state's major related regulation and control policies include preferential tariffs for fertilizer manufacturers, preferential tariffs for fertilizers for agriculture, return of value-added tax for urea products, special subsidies for diammonium phosphate, and guarantees for coal, electricity, and oil for fertilizer production. , gas supply, etc. However, no matter which department appears to be out of touch, which policy is not well implemented, it will affect the overall effect of policy control. In addition, there is little experience in adopting "departmental linkages" on the issue of chemical fertilizers, and the understanding of the importance of chemical fertilizers varies from department to department. As a result, the actual implementation of the policy has been greatly hindered and the effectiveness of implementation has been greatly reduced.
Second, it is difficult to centralize the control and control of "large market flexibility." China's chemical fertilizer market is also in a gradually improving market economic environment. In the past, the main channel of sales under the planned economic system has ceased to exist. In the past, the agricultural resources department was the main channel for sales of agricultural products, and the agricultural resources department could effectively control the market. At present, the restructuring of agricultural-funded enterprises has greatly weakened the role of the original main channel, and the supervision and regulation of government behavior has become widespread. As a result, operability has deteriorated, and the supervision and inspection of fertilizer prices has become more difficult.
Again, poor information has exacerbated the blindness of farmers' consumption. Farmers, as the main consumers, have inherent blindness in fertilization technology and are not very sensitive to changes in fertilizer prices. Many unscrupulous traders at the grassroots level use farmers to not understand the market information after policy intervention, deliberately rendering the atmosphere of shortage of chemical fertilizers and boosting Fertilizer prices.
Finally, local protectionism disrupts the optimal allocation of markets. On the one hand, the local protection of phosphorus and sulfur resources has exacerbated the strain on national resources. As the price of raw materials rises, the غير مجاز مي باشدt of fertilizer production increases, and the price of fertilizer increases. On the other hand, local governments have implemented the so-called access system explicitly or implicitly to some fertilizers, which has caused some monopoly in the fertilizer market, causing tensions in supply and demand in some regions.
In fact, the positive attitude of the government is not "finding nothing", at least preventing the disorderly competition and accumulating many useful experiences in policy formulation. Therefore, if we can more clearly grasp the crux of the policy failure and adopt comprehensive measures to guide the market and treat the symptoms and the root cause, we can achieve the desired goals within a certain period of time. Of course, policies that really play a regulatory role ultimately need to play a role in the market, and completely liberalizing the market is the direction of macro-control. However, due to the special properties of chemical fertilizers, the government obviously can not completely liberalize the market as quickly as other commodities. Therefore, the government's fertilizer policy needs to find a way to adapt to the development of the fertilizer market, and can give full play to the macro-control role of policy, economic, and technical leverage.

Post Bed Sewing Machine

FOXSEW Post Bed Sewing Machines for Shoes, included Fully Automatic Post Bed Sewing Machines, with Automatic Thread Trimming, Automatic Back-Stitching, Automatic Presser Foot Lift, Automatic Needle Position. All these machines are with latest technology in the World, and we made some special Post bed Sewing Machines, like Small Post Bed Fully Automatic Post Bed Sewing Machine, High Post Bed Full Automatic Postbed Sewing Machine for small and long products sewing, like boots, golf clothes or shoes, baby's shoes... 

So, FOXSEW Post Bed Sewing Machines are necessary for Footwear and Leather Industry, let's be together to make quality life.FOXSEW Heavy Duty Post Bed Lockstitch Sewing Machines is to meet customers requirements, Fully Automatic Post Bed Sewing Machines are now very popular in the Shoes Industry, Leather Upholstery Industry, due to high-working effieciency, saving labor's غير مجاز مي باشدt, beautiful stitches, these machines are sold very well. Single Needle Post bed Sewing Machines, Double needle Post bed Sewing Machines, Direct Drive Post Bed Sewing Machines, Small Post bed Sewing Machine, and Super High Post Bed Walking foot Heavy Duty Lockstitch machines, Computerized Fully Automatic Post bed Sewing Machines, are all here with FOXSEW, So, FOXSEW can help customers improve working efficiency, save labor's غير مجاز مي باشدt, get good profit. More and more customers choose us for their good partner to develop market all over the world. 

Automatic Heavy Duty Post Bed Sewing Machine,Automatic Post Bed Sewing Machine,Heavy Duty Post Bed Sewing Machine,Direct Drive Post Bed Sewing Machine,Computer Post Bed Sewing Machine,Post Bed Lockstitch Sewing Machine,Super High Post bed Sewing Machine

TAIZHOU FOXSEW SEWING MACHINE CO.,LTD. , https://www.chinafoxsew.com

• Model NO.: JTH-4K

                                                                                                                                                                                                                                           

• Working: Convection Mixer

                                                                                                                                                                                                                                           

• Trademark: GMK

                               

• Mixer Type: Static Mixers

                                                                                                                                                                                                                                           

• Application: Liquid with Suspended Solids, Viscous Fluid, Liquid

                                                                                                                                                                                                                                           

• Origin: Foshan, Guangdong

                                                                                                           

                                                                    4K Sealant Mixing machine Automatic Metering Static Mixer

Specifications

G. M. K Static mixer is a kind of new-type mixing equipment for high visغير مجاز مي باشدity material, particularly suitable for continuous prod

Summary:

G. M. K Static mixer is a kind of new-type mixing equipment for high visغير مجاز مي باشدity material, particularly suitable for continuous production of silicone sealant. It is comprised of static mixer, hydraulic system, dosing and metering system, valve, integrated electric control system, pneumatic control system and frame, etc., among which the static mixer is the core of the entire equipment.

The working principle of static mixer is to let fluid flow in the pipes to impact different kinds of plate components, to increase the velocity gradient of the laminar motion of fluid or to form turbulence. At laminar motion, it is "separation— Locomotion— -re-confluence"; At turbulence, besides the above three, the fluid will also produce strong turbulence at section direction, with very strong shearing force effect on the fluid, for furthur separation and mixing of the fluid. Due to the function of mixing components, the fluid is sometimes levorotary and sometimes dextrorotary, constantly changing flow directions, not only pushing the fluid at the center to the rim, but also pushing the fluid at the rim to the center, and thus creating excellent radial mixing effects. Besides, the rotation of the fluid itself will also take place at the interface of neighboring components, forming perfect radial circular flow mixing effects. It is called "static" mixer because there are no moving parts inside the pipes, and there are only static components.

SV, SX, SL, SH and SK Series static mixers are the advanced mixing equipments in the country. They are widely used in fluid-fluid, fluid-solid, fluid-gas, gas-gas mixing, emulsification, absorption, extraction, reaction and enhanced heat transfer, etc. They are ideal mixing equipment for chemical, pharmacy, foodstuff, synthetic fiber, plastic, environmental protection, mining and metallurgy, paper making, coal gas and such industries, with the advantages of wide application range, high flexibility in operation, simple flow, reasonable structure, low investment, low energy consumption and quick return, etc.

Based on the characteristics of sealant, the company utilizes its own strong R&D force to develop new-type static mixer with independent intellectual property rights, which are particularly suitable for technical requirements of sealant industry, capable of realizing auto metering, auto feeding, continuous auto production of multi-constituent materials, and thus guaranteeing consistent product quality and greatly reducing production waste. This machine achieves world-advanced technology level, and can rival foreign equipment of the same kind, with very high غير مجاز مي باشدt performance.

Main Features
Multi-constituent static mixing and metering system
Automatic on-line feeding of catalyst
Automatic on-line feeding of various kinds of auxiliary agent
Automatic on-line feeding of color paste
Continuous automatic production
No-clean and no-residue, capable of greatly reducing production waste
Capable of realizing zero-inventory
Capable of greatly saving labor غير مجاز مي باشدt

Track Tourist Train

Train For Tourism,Tourist Special Train,Special Tourist Train,Track Tourist Train

Hangzhou Trains Equipment Co.,Ltd , https://www.tramscn.com

• Model NO.: SVM-500~SVM-5000

                                                                                                                                                                                                                                           

• Working: Convection Mixer

                                                                                                                                                                                                                                           

• Application: Powder, Granules

                                                                                                                                                                                                                                           

• Application Area: Plastic

                                                                                                                                                                                                                                           

• Mixing Drum Shape: Conical

                                                                                                                                                                                                                                           

• Operating type: Continuous Operating

                                                                                                                                                                                                                                           

• Power: 4HP/5.5kw

                                                                                                                                                                                                                                           

• Trademark: SHICA

                                                                                                                                                                                                                                           

• Specification: 1350*1100*2250mm

                               

• Mixer Type: V-Mixer

                                                                                                                                                                                                                                           

• Stirring Type: Spiral

                                                                                                                                                                                                                                           

• Certification: CE

                                                                                                                                                                                                                                           

• Layout Type: Verticle

                                                                                                                                                                                                                                           

• Additional Capabilities: Drying

                                                                                                                                                                                                                                           

• Condition: New

                                                                                                                                                                                                                                           

• Capacity: 1000kg/2000L

                                                                                                                                                                                                                                           

• Transport Package: Wooden Package

                                                                                                                                                                                                                                           

• Origin: China

                                                                                                           

                                                                    Plastic Color Mixer


FEATURES:
1.Helical circular mixture,fast and uniform stirring.
2.Suitable for all kind of plastic raw material and color mixing,virgin,regrind and Masterbatch mixture will have effective result
3.Fully stainless steel designed,rust free and easy to clean
4.Installed with power control device to ensure safety
5.screwing leaves thickness is 3mm
6. Screwing pole diameter is 76mm.

SPECIFICATIONS

Galvanized H Post

Galvanized H Post

  Hot dipped galvanized Steel Guardrail /Highway fence and Guardrail posts are mainly used for safety traffic barrier protection on highways and first-class highways at home and abroad.  Q235 material is used domestically, and Q345 material is used abroad.  The steel plate is formed by cold bending and then galvanized and electrostatically sprayed.

Beam Guardrail has strong corrosion resistance, bright and beautiful appearance, and high anti-collision strength, which meets the standards of the Ministry of Communications.  , In line with GB / T31429.1-2015 "Anti-corrosion Conditions of Expressway Traffic Engineering Components" standard.  Requirements of "Waveform Steel Guardrail Part 1: Double Waveform Motorway Guardrail"

Product Name	Galvanized Guardrail H Post
Material	Q235,Q345
Surface Treatment	hot dip galvanized,color coated
Zinc Coating	350g-1220g/square meter
Length	4320/4130mm
Width	2.5mm-4mm
wave height	81-85mm
wave width	310-315mm(W Beam) / 506mm(Thrie Beam
Standard	National Standard/American Standard/European standard
Capacity	100,000metric tons per year

Highway Guardrail Round Post,H Post For Guardrail,Galvanized H Post

Shandong Hengfeng Group , https://www.luhengfeng.com

Intelligent video analysis refers to the use of computer image analysis technology to understand the content of the video screen. By separating the background and the target in the scene, the target that appears in the scene is analyzed and tracked. By presetting different analysis rules in the camera scene, once the target has violated the predefined analysis rules in the scene, the system triggers the pre-set linkage rules to achieve the active alarm function.

From the product form of the intelligent analysis system, it is divided into two types. One is implemented by intelligent algorithms + DSP, which is commonly used in front-end intelligent analysis cameras and intelligent analysis video servers. At present, there are many systems that use this method. The software and hardware with the intelligent analysis function are placed on the video capture side. In a conventional video surveillance system, video occupies a large amount of storage space and transmission bandwidth, and how to solve these problems is the first major challenge. A lot of useless video information is stored and transmitted, which both wastes storage space and consumes bandwidth. The purpose of intelligent analysis is to ease the space required for video storage and the bandwidth pressure required for transmission, or to use low for some unimportant videos. Streaming is compressed and transmitted. In this way, it will help increase the application value of the monitoring system. The algorithm processing is implemented by the front-end, and the back-end service pressure is very small, thus a large number of intelligent analysis cameras can be configured in one system.

The other type is the operation mode of the back-end PC server plus intelligent analysis software, such as Aimetis and iOmniscient. Because this method is used by the back-end PC server for processing, the performance of the processing is better than that of the front-end intelligent analysis camera. Since the algorithm occupies a large amount of hardware resources, when processing multiple analyses at the same time, the system The lack of processing capacity is manifested. Because the back-end PC server has powerful analysis and processing capabilities (compared with the front-end DSP + software approach), the PC server processing method is usually applied to very important intelligent analysis occasions.

Smart Analytics Application Benefits

From the main application of intelligent analysis, there are two major development directions. One is the intelligent identification technology based on license plate recognition and face recognition, which is mainly applied to electronic, mechanical and customs. The other is the behavioral analysis technology represented by rules such as perimeter prevention, population statistics, automatic tracking, retrograde, and prohibition, and is mainly applied to perimeter perimeter perimeters, shopping malls, traffic, and scenic spot flow statistics, and roads are prohibited from being parked. Violation of retrograde, scene tracking and other aspects.

1, dual-track automatic tracking: intelligent analysis camera plus ordinary fast ball. It can be applied to urban police emergency plans. Incident object tracking.

2. Flow statistics: The number of people entering and exiting the statistical box is used to analyze and count customer flow in supermarket shopping malls and help merchants formulate corresponding sales strategies. Applied to attractions, subways, and provide traffic data for personnel control applications.

3. Cross the alert area: Set up a virtual fence to detect the perimeter. When suspicious persons or objects are found crossing the fence, an alarm is triggered and an alarm signal is uploaded to the monitoring and management center. At the same time, the alarm screen can be uploaded to remote monitoring users via the network. It is applied to traffic crossing pedestrian crossings or zebra crossings, plant wall areas, schools, and detention centers.

4. Lost analysis: Draw an area where important items are placed on the monitor screen as an alert area. As soon as the item leaves the alert area, the alarm rule will be triggered immediately. Applied to key protected areas such as museums, exhibition halls, auctions, gold and silver stores, etc.

5, direction analysis: In the actual monitoring, people may be concerned about the direction of the flow of people and the direction of traffic flow, through the identification of the direction can determine whether the target is not legal walking or driving, if there is reverse behavior, the target will be automatically locked, And alarm at the same time.

Roads that apply to one-way travel; important entrances and exits.

6. Intelligent tracking: Targeting a suspicious person or object and recording the trajectory of the target, and the camera will follow the target to turn and alarm. Applicable to high-grade residential areas, personnel banned into the area, confidential areas, important protection areas. And can be used as the incident after the analysis of the trajectory of the case playback process. To quickly solve the case.

The intelligent video analysis system solves the problem that security personnel are relieved from the complicated and boring “eye-screen” task, and the device completes this part of the work; the other one is to quickly search from the massive video data to find the desired image. Studies have shown that when operators stare at the video wall for more than 10 minutes, 90% of video information will be missed, making this work meaningless, and often the monitoring system becomes the basis for subsequent investigations. However, the intelligent video analysis system turns the ex post evidence into an active defense, enabling the project to achieve the most effective security with the most غير مجاز مي باشدt-savings. Intelligent video analysis system has played a decisive role in successfully applied to all walks of life.

Intelligent Analysis Technology Application Bottlenecks

Isn't video analytics a panacea? What are the shortcomings? In the actual environment, the change of illumination, the complexity of the target motion, the occlusion, the similarity of the target and the background color, and the disorderly background will increase the difficulty of designing the target detection and tracking algorithm. We can specifically look at several aspects that affect smart analytics applications:

The complexity of the background: changes in the light caused by changes in the target color and background color may cause spurious detection and error tracking. Using different color spaces can reduce the impact of changes in lighting on the algorithm, but it cannot completely eliminate its effects; the conversion of foreground objects and backgrounds in the scene, and the dropping and picking up of baggage, starting and stopping of the vehicle; the color of the target is similar to the background color. It affects the effect of target detection and tracking; the difference between the target shadow and the background color is usually detected as the foreground, which makes it difficult to segment the moving target and extract features.

The trade-off of target characteristics: The sequence image contains a large number of feature information that can be used for target tracking, such as the motion, color, edge, and texture of the target. However, the characteristic information of the target will generally change at any time. Selecting the appropriate characteristic information to ensure the effectiveness of the tracking is difficult.

Occlusion problem: Occlusion is a difficult problem that must be solved in target tracking. When the moving target is partially or completely blocked, or when multiple targets are occluded from each other, the invisible part of the target will cause the loss of target information and affect the stability of the tracking. In order to reduce the ambiguity caused by occlusion, the correspondence between features and targets must be handled correctly. Most systems generally use statistical methods to predict the location, scale, etc. of targets, and they are not able to deal with the more serious occlusion problems.

Considering real-time and robustness: Sequence images contain a large amount of information. To ensure the real-time requirements of target tracking, you must choose an algorithm with a small amount of computation. Robustness is another important performance of target tracking. Enhancing the robustness of the algorithm is to make the algorithm more adaptable to complex backgrounds, changes in lighting, and occlusion, which in turn comes at the غير مجاز مي باشدt of complex operations.

To solve the above problems, we can improve or enhance the effectiveness and practicability of the video intelligence analysis system from the following aspects.

1. Optimize the algorithm and develop an analysis strategy for the scenario so that the accuracy of the algorithm can be increased.

2. Reasonably choose the camera installation angle, the accuracy of the analysis, most of it depends on the rationality of the angle.

3. Add auxiliary supplementary equipment, such as adding a fill light or infrared light source, so that it can be applied under various complicated conditions.

Video intelligent analysis system is an inevitable trend in the development of future video surveillance systems. As the most convenient means for obtaining useful information from large amounts of data, it will become the main force of video surveillance systems, and with the organic combination of high-definition and intelligent, With the integrated development of cameras and intelligent analysis, its role and influence will increase, transforming traditional human defense into technical defense.

Gear Parts

Synchronizer Gear,Synchronize Ring Gear,Adjustable Timing Gear,Synchronizer Gear Assembly

ShaoXing Change Auto Synchronizer Ring Co.,Ltd , https://www.sxcjautoparts.com

LCD monitor, also known as LCD monitor. Mentioned that the history of the development of LCD monitors can be traced back to the 19th century. At the end of the 19th century Austrian botanists discovered liquid crystals, that is, liquid crystals. Until the 1960s, the first LCD monitor was born. Then, starting in 1998, liquid crystal display technology entered the application area of ​​desktop displays. This great discovery has finally produced enormous value in commercial applications. There is also an LCD monitor that is currently widely used.

Monitor maintenance

Then what needs to be paid attention to during the use of LCD monitor products, how to maintain and maintain it? Today, Projection Times Net will come to you briefly.

The first thing to do is to avoid the monitor colliding or rubbing against some hard objects. Because the monitor product is fragile, its ability to resist "impact" is also very small, many crystals and sensitive electrical components will be damaged in the event of an impact, so always be careful not to let the monitor have access to those pairs It is easy to cause damage to the object.

In addition, you should always pay attention when cleaning the screen. Do not spray the cleaner directly onto the screen, because these liquids may flow into the screen and cause a short circuit and affect the use. The cleaner should be sprayed onto a clean soft cloth, and then wipe the screen to avoid danger.

Second, if you inadvertently spray cleaner onto the screen, you don't have to worry too much when the cleaner fluid fills the screen. If it is found before the boot just a screen surface mist, gently wipe with a soft cloth on it, if the water has entered the LCD monitor, then put the LCD monitor at a slightly higher temperature, for example, under the lamp , gradually evaporate the water inside.

However, if the situation of “overwhelming” on the screen is more serious, the user still calls a professional maintenance personnel to ask for their help. Because the more serious moisture will damage the components lead to permanent damage to the liquid crystal electrode corrosion. Therefore, when you do not allow liquids or water to flow into the monitor screen, you should try to use the monitor product in a dry and ventilated environment to avoid unnecessary trouble.

Third, it is best not to use a screen saver. why? Then look down and you will know. Because the core structure of the LCD monitor is similar to "sandwich", it is a liquid crystal molecule in which two glass substrates are filled with motion. The signal voltage directly controls the switching state of the thin film crystal, and the transistor is used to control the liquid crystal molecules. The liquid crystal molecules have obvious optics. Anisotropic, able to modulate the light emitted from the backlight to achieve image display. A complete display consists of many pixels, each of which looks like a switchable transistor.

A liquid crystal monitor that is displaying an image has its liquid crystal molecules switched on and off. For a monitor with a response time of 20ms, the liquid crystal molecules have been turned on and off for several hundred times in one second. The number of switching times of the liquid crystal molecule, that is, its service life, is limited. After using a certain program, there will be aging, affecting the use of results.

When the computer stops operating, the screen saver that displays colorful and repetitive movements on the screen allows the liquid crystal molecules to remain in the repeated switching state. This will not shorten the useful life of the monitor.

Therefore, when the computer is not used for a short period of time, the computer can be put into a standby state. This means that environmental protection and energy saving can also extend the service life of the monitor. What can you do for it?

Finally, I would like to tell everyone that if there is a problem with the LCD monitor product, do not dismantle the product without permission. Because the monitor generates high voltage inside, it is not only dangerous for people who do not know to disassemble the monitor. It is also easy to increase the monitor's failure. Therefore, when problems occur, you must promptly call a professional service agency to avoid unnecessary trouble.

Surveillance staff eye protection method

1. The indoor lighting light should not be directly reflected on the fluorescent screen, and the brightness should be darker than usual.

2. Place the file to be read at the same height and distance as the screen, without moving the focus between the two objects too often.

3. You should blink at least once every time you look at the monitor for a minute or two. For each hour of work in front of the monitor, take a break of 10 to 15 minutes. The meaning of the rest is that objects farther than 6 meters away, especially distant objects moving better.

4. Some colorful fruits, such as oranges, carrots, etc., and foods rich in vitamins and proteins such as lean meat and milk can help rejuvenate the retina.

5. Place the computer 50 to 75 centimeters in front of it, about 30 degrees parallel to the eyes, and ensure that the seat is on both feet. Long-term use of laptops can add extra mouse, keyboard, and tiltable shelves so that you don't fatigue the screen.

Then after changing the monitor from CRT to LCD, the eyes are more fatigued than before. What is a good way?

Try to adjust the brightness and contrast of the monitor, change the background color and see how it works. If you have to face the LCD monitor for a long time every day, you may want to install the protection screen.

Look at the computer monitor to see eyestrain, I'm afraid this experience I have encountered. This state of continuation will lead to eye strain, blurred vision, shoulder acid, headache, systemic fatigue, and vision loss.

Causes of eye fatigue include: light and reflected light mapped to the monitor, flickering of the screen, etc.

Compared with the CRT, the LCD monitor basically does not suffer from flickering problems. In contrast, mapping light and reflected light have become problems for LCD monitors. When a fluorescent lamp or a person's face is mapped onto a screen, the difficulty of reading the screen is increased, and the eye muscle activity exceeds the normal level. It can be said that it is this reason that causes eye fatigue.

In addition, liquid crystal monitors have recently developed to high brightness and high contrast. Although this is good for color display, it also makes the eyes more prone to fatigue.

Therefore, try to avoid eye strain when working with the LCD monitor.

Adjust picture brightness, contrast and color

Adjust the screen contrast and brightness. However, if normal surveillance work is performed for a long period of time, proper reduction in contrast and brightness can reduce eye strain.

The LCD monitor has functions such as adjustment of brightness and contrast, vertical and horizontal deviation and tilt. Try using these features to adjust brightness and contrast. However, when the brightness and contrast are too low, eye fatigue is more likely to occur. Therefore, try several times to adjust to your own condition.

As for the adjustment method, please refer to the instructions of each monitor.

In addition, through the Windows screen settings, you can also change the window's color configuration. Select [Display] on the control panel, click [Appearance] → [Detail Settings], and you will be able to change to your favorite color configuration.

In the initial setup, because the white of the window background is too strong, changing it to cream or light green will have a nice effect. Please select [Window] in [Advanced] and use [Color 1] to change to the favorite color.

Depending on the software, the window color may not change even if the above changes are made. In the menu of this type of software, there is a separate window background setting instruction. Please confirm it with help.

Install screen on screen

To avoid eye strain by reducing screen reflections and mapping, the most effective way is to install the protection screen on the screen.

Transmittance refers to the ratio of light passing through the protective screen. The smaller this value, the thicker the color of the protection screen. When dealing with pictures and photos, it is necessary to be as close to natural colors as possible. Therefore, products with a high transmittance value (about 80 to 90%) should be selected. The person who feels that the screen is dazzling usually prefers a product with a lower transmission rate (50 to 70%).

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Looking back at the history and looking forward to the future, the author believes that there are three main factors that have a major impact on the development trend of the integrated security platform, namely, integration, innovation, and cooperation. These three aspects overlap each other. However, from a business logic point of view, the development of these three aspects determines the future direction of the platform. I believe that grasping these three aspects will inevitably capture the pulse of the development of the future platform.

System integration to build a large security management platform
The most intuitive function of the security integrated platform is to enable unified management of equipment. However, it is necessary to first solve the problem of equipment interconnection and interoperability, the current technical barriers in the security industry are relatively thick, and the overall performance is not open enough. The industry calls for standards and calls for openness.

In the past, due to the single and isolated product and equipment, the customer’s needs were often “over-cut” when faced with customers, and “completely cut” a single requirement into a number of small requirements, and then applied different products, causing customers to repeat Investment, difficult to manage, and the integration and linkage of various security systems are poor, and a large number of information islands are generated.

Taking the power company substation as an example, in order to meet the unattended application scenario, a network remote image monitoring system was set up. To protect the substation power facilities, fire prevention and anti-theft systems were used to monitor the operation status of the communication equipment room. On a telecommunications room environment power remote monitoring system, coupled with residential, office building simulation monitoring system, a power company, only monitoring the management platform will not be the next five or six kinds, whether it is a unified management of the system or the future smooth upgrade Both are impossible tasks.

Taking Safe City as an example, many security and non-security systems, such as electronic bayonet, emergency command, PGIS, and digital*, began to merge or connect with the safe city system. Under such a trend, Huawei has proposed a security and networking system for this situation. Fusion of heterogeneous systems.

The security networking and the integration with heterogeneous systems pose great challenges to the integration capabilities of the system platform. It requires the system platform to have a great deal of openness and flexibility to expand. It is necessary to provide system capabilities in an open interface manner. It is convenient for the cooperation of the manufacturers to customize the business, but also the system has a bus-type capacity integration capabilities, can quickly integrate the security capabilities of the partner manufacturers into the system.

On June 1, 2012, the National Standard for Information Transmission, Exchange, and Control of Security Guard Video Surveillance Networking System (GB/T28181-2011) was officially implemented. This means a unified interface protocol for the national video surveillance system, which itself is the national security platform's appeal for the nationwide video surveillance network.

The large-scale network construction has very important strategic significance for the development of the security management platform, which greatly enhances the management platform's ability to dispatch resources and operational efficiency, and has produced huge social benefits. It also indicates the important development direction of the security management platform.

Taking cloud technology as an example, the development of contemporary cloud technology has constructed a new platform (transmission platform, computing platform, and data storage platform) in three aspects.

In the future, new video surveillance private network technologies can reduce the user's operation and maintenance غير مجاز مي باشدts, but they cannot completely solve the problem of transparent transmission platforms. A large number of device routers, bandwidth allocation, faults, and redundancy require a new technology to solve. What is currently foreseeable is the virtualization capabilities of network devices. That is the cloud pipeline. The concept of a cloud pipeline was proposed at the IBM conference in 2002, and network capabilities were all allocated on demand. If this goal can be achieved, it is the future. The foreseeable technological development at present is to increase the virtualization capabilities of network equipment, make the transmission network transparent to bearer services, and achieve redundancy in the case of meeting performance and low غير مجاز مي باشدt, and become a truly dedicated video surveillance service. Cloud delivery platform.

Cloud Technology Builds a New Platform

Looking at the large computing platform that supports the video surveillance business, this cloud computing technology is the hottest in the industry, and it is also the most understood. In the video surveillance business, the demand for computing power is mainly in intelligent analysis. At present, intelligent analysis is relatively less used in large-scale projects with open environments such as safe cities, because the recognition rate is low at present, and it is greatly affected by the scenario.

We look ahead along the lines of the existing technology. With the popularity of high-definition video, a large amount of video data containing rich content is transmitted to the user. The amount of information is increasing. From the current point of view, it is already in a state of overloaded information. According to a scientific article published by NewScientist, exposing a person to an information overload environment is more harmful than smoking marijuana. In other words, humans have not processed so much information before they have reconstructed their brains. Smart analysis can then help humans do some simple tasks. Unfortunately, the current intelligent analysis of high-definition video is still in the early stages of high-definition reduction to SD images and even lower-resolution images for analysis. The main reason is that the complexity of the technology is related to the computing power of existing computers.

Gradually, the cloud computing technology that has just begun to mature gradually can solve this problem of computing resources. After virtualizing the computing capacity, the redundant capacity can be used more rationally depending on the CPU's business idleness, and the same computing resources can be used to complete the workload several decades before virtualization. The smart analytics service deployed on this cloud computing platform will not care about computer management, troubleshooting, and resource scheduling. All this is transparent in the cloud computing platform.

The big data storage platform realized by using cloud storage technology can have very good application. The standard cloud storage technology stores data in slices on all devices in the network and uses redundant algorithms to verify the risks so as to reduce the risk of data silos. Applications in the field of video surveillance differ from standard cloud storage in that data from one police station cannot be stored across the network to another police station. This is a different model from "the economic foundation determines the superstructure." The development of technology always involves the determination of the underlying technology by the upper-level business.

Combine application scenarios to give an example. In a police station, 500 1080P images are stored and stored for 30 days. Converted to 1359TB of disk media and 272TB of redundancy. With the development of technology, the resource utilization rate of the cloud storage platform can be increased from about 55% two years ago to about 86% now, and it already has application capabilities. Even with the most popular 4U24 disk storage system, nearly 34 devices will be deployed. If so many devices follow the traditional N+M redundancy backup method, the غير مجاز مي باشدt will be much higher. If you deploy cloud storage platforms on these 34 storage devices at this time, you can achieve N+0 redundancy. While saving spare equipment, it also increases reliability. What is more worth mentioning is that since the cloud storage platform transparently handles the bearer services above, the business no longer needs to care about the equipment management, and concentrates on doing business well.

Cloud transmission, cloud computing, cloud storage, the author has expanded the concept of the traditional security platform to a platform for security applications. In addition to these hosting platforms, our traditional business application platform cannot stop clouding. When many companies in the industry hear the proposition of security platform clouding, they will think of running software platforms into cloud computing and storing them in cloud storage.

In fact, there is no relationship between the cloudization of the security platform and the cloudized hosting platform. Here the author proposes a concept called "business cloudization." A simple example. In the traditional video surveillance technology solution, the camera is connected to an access server via a network. Because access servers have limited access capabilities, a large number of access servers must be deployed in large projects. At this point, different cameras may be deployed to connect to different access servers. At this time, manpower consumption is very large. You can virtualize all access servers into one server and one address by using some unique clustering technologies. At this point, all cameras can be configured with the same address and connected to the same virtual server. This is the cloudization of video and video access services, and the savings in operation and maintenance غير مجاز مي باشدts are considerable. On the other hand, with the deep understanding of the security industry in the industry, the company has introduced a solution for cameras directly connected to smart storage devices. Similarly, after virtualization, the camera can be connected to a large virtual storage. This is the cloud of business.

Interaction between Industry Chain Cooperation and Platform Development

An open, standard, and customizable integrated security platform is the basis for industrial chain cooperation. At the same time, the industrial chain cooperation also has a profound impact on the development of the platform.

In the field of video surveillance, some open industry standards have been formed, such as the industry's mainstream protocol standards advocated by organizations such as ONVIF and PSIA, or the domestic GAT669 interconnection protocol. Through the formulation and promulgation of these standards, the majority of manufacturers do not need to spend too much thought to consider the docking between the two, we all follow the unified protocol standards, develop an open system, both to ensure open and compatible, at the same time The speed is also faster, and it is not necessary to replace the whole set of equipment and equipment in the entire network to avoid the waste of human and material resources of the customer.

At the same time, Huawei's adherence to the concept of integration, the independent enabling components in the platform system, and the open design have enabled the integrated manufacturers to have more choices. At the same time, Huawei has helped customers build the most suitable security system, saving غير مجاز مي باشدts and shortening the project delivery cycle. In addition, Huawei also provides the most standard and open customized interface services. Based on Service Oriented Architecture (SOA), Huawei provides standardized service development custom interfaces, such as Webservice interfaces and client middleware interfaces, and establishes dedicated open labs for partner companies to conduct business connection. At the same time, Huawei supports ESB (Enterprise Service Bus) and implements online hot plugging of third-party service capabilities to achieve an elastic expansion of the overall system capabilities.

In terms of the survival status of the security industry chain, we are most concerned about the impact of platform development trends on the industry chain and the impact of this impact on the development of the platform itself. In addition to the technical aspects, the cooperation model and marketing operation of suppliers and integrators in the industrial chain will have a significant impact on the development of the security platform. In this process of influence, around the customer demand, the competition and the game between the manufacturers will eventually split the two camps of suppliers and integrators. This is actually the external performance of vertical demand and horizontal demand in the industry market.

Vendors focus on technology leadership, industry standards, open and friendly development ports, provide strong support for integrators from products and technologies, and integrators focus on the business needs of industry customers, dig deep into industry applications, and build well. The customer relationship enhances the integration capabilities of their own programs. Huawei, as a supplier of equipment, adheres to the advantages of Huawei's large platform for R&D, and establishes a joint team consisting mainly of chips, terminals, and platforms in collaboration with Hass, Terminal, and China Research, and actively researches low-bandwidth coding techniques in video surveillance. Packages such as cutting-edge technology, intelligent search and fading memory technology, under the principle of unchanging market drivers, highlight the highlights and features of Huawei's video surveillance, and accelerate the transformation of the market landscape.

Because this is an era of openness, standards, and cooperation, we cannot rest on our own proprietary systems. Only by making products with an open mind and integrating more solutions can we maximize the value of our products. Today, with the globalization of the market, no single company can completely cover all the issues. The cooperation between enterprises is increasingly important. Only by working together can we provide our customers with the most reasonable security management platform solutions. I believe this is also the inspiration for us in the development of the security management platform.

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In the building intercom mobile communication network, all communication between the mobile station and the fixed network is transmitted through the wireless interface, but the wireless interface is open, and the perpetrator may eavesdrop on the channel through the wireless interface and obtain the transmission information therein. It is even possible to modify, insert, delete, or retransmit mesغير مجاز مي باشدes in the wireless interface to achieve the purpose of spoofing mobile user identities to deceive the network terminal. According to the different types of attacks, it can be divided into three types: unauthorized access to data, unauthorized access to network services, and threat integrity.

1. Unauthorized access to data attacks

The main purpose of unauthorized access to data attacks is to obtain the user data and/or signaling data transmitted in the wireless interface. There are several ways to do this:

Eavesdropping on User Data - Obtaining User Information Content Eavesdropping Signaling Data - Obtaining Network Management Information and Other Wireless Tracking for Proactive Attacks - Obtaining Mobile User Identity and Location Information for Wireless Tracking Passive Transport Stream Analysis - Guess User Communication Content and Purpose Active Transport Stream Analysis - Get Access Information
Unauthorized access to network service attacks

In an unauthorized access network service type attack, an attacker defrauds the network by impersonating a legitimate mobile user identity, obtains authorization to access the network service, and evades payment, and the counterfeit mobile user pays for the attacker.

Threat Data Integrity Attacks

The target of the threat data integrity attack is the user data flow and signaling data flow in the wireless interface. The attacker realizes the purpose of deceiving the data receiver by modifying, inserting, deleting, or retransmitting these data flows. .

In the building intercom mobile communication network, the composition of the network is more complicated. It not only contains many functional units, but also the communication media between different units is not the same. Therefore, there are also some insecure factors that cannot be ignored in the security mobile network, such as wireless wiretapping, identity counterfeiting, falsification of data, and denial of service. According to the type of attack, there are the following four categories:

1. Unauthorized access to data attacks

The main purpose of unauthorized access to data attacks is to obtain user data and/or signaling data transmitted between network-end units. The specific methods are as follows:

Eavesdropping on User Data - Obtaining User Communication Content Eavesdropping Signaling Data - Obtaining Security Management Data and Other Information Facilitating Active Attacks Counterfeit Communication Receivers - Obtaining User Data, Signaling Data, and Other Passive Transfer of Information Facilitating Active Attacks Stream analysis - access to information access to illegally stored data in the system - access to data stored in the system such as legitimate user authentication parameters, etc. 2. Unauthorized access to network service attacks

The main purpose of unauthorized access to network service attacks is to access the Internet and avoid payment.

The specific manifestations are as follows:

Counterfeit legal use - access to network services authorized counterfeit service network - access to network services to counterfeit the home network - access to authentication parameters that can impersonate a legitimate user's identity abuse of user power - to enjoy network services without payment and misuse of network services - Obtaining illegal profits
Threat Data Integrity Attacks
The threat data integrity attacks on the building intercom mobile communication network include not only the threats of data integrity attacks in the wireless interface, but also the communication interface between the BSS and the MSC may be a wireless interface. Moreover, it also includes wired communication networks. The specific performance is as follows:

Manipulate user data streams - gain network service access rights or intentionally interfere with traffic manipulation signalling data flow - gain access to network services or intentionally interfere with communications Counterfeit communication participants - gain access to network services or intentionally interfere with communication manipulation Downloadable applications - Interfering with the normal operation of the mobile terminal Manipulating the mobile terminal - Normal operation of the mobile terminal Manipulating data stored in the network unit - Obtaining access rights to network services Intentionally interfering with communications
4. Deficit attacks after service

After the service, the repudiation attack is whether or not the communication occurred after the communication, thus avoiding payment or evading responsibility. The specific performance is as follows:

Paid repudiation - rejection of the pay sender denying - unwillingness to pay for the mesغير مجاز مي باشدe service sent by the recipient Responsibility of the recipient - unwillingness to pay for the received mesغير مجاز مي باشدe service responsibilities There are various insecurity factors in the radio communication network - eg Wireless eavesdropping, identity impersonation, falsification of data and service denials, etc. These security factors directly affect the security of the community, then how to avoid these problems, it depends on the efforts of various manufacturers to study.

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