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The Solution of Wireless Intelligent Video Surveillance System Based on Embedded ARM Technology

Technical exchange At present, video surveillance systems using wireless network technology rely on their cheaper prices, more flexible deployment methods to get the majority of video surveillance users of all ages, and gradually become one of the development direction of video surveillance technology. Combining embedded technology and wireless video monitoring technology, this paper presents a solution of wireless intelligent video surveillance system based on embedded ARM technology.

With the development of high-tech such as communication technology, computer technology, digital video technology, and network technology, the field of video surveillance has also progressed rapidly. In recent years, the development of embedded computer technology and network technology has promoted the further progress of video surveillance, and a wireless network video surveillance system based on embedded technology has emerged. The wireless network video surveillance system adopts a multi-task embedded operating system and uses an embedded chip to complete the compression transmission and processing of video. The chip has a powerful digital processing function, and the video can be directly connected to the network after the chip is processed. In this way, the user can view the images captured by the camera over the network for real-time remote video surveillance.

It is understood that, compared with other monitoring systems, the use of embedded wireless video surveillance system is easy to install, small size, can be achieved unattended. This kind of system has low غير مجاز مي باشدt, high stability, real-time characteristics, and convenient operation and maintenance. The embedded wireless video monitoring system integrates wireless communication technology and embedded technology. It has evolved from the previous monitoring system. This system saves a lot of network wiring غير مجاز مي باشدts, and the wireless video monitoring system with embedded technology is compact and flexible. Video surveillance for special occasions can meet application requirements. This article proposes a wireless video surveillance system solution based on embedded technology. The wireless video surveillance system designed by using this scheme has high stability, high reliability, strong video signal processing capability, easy installation and arrangement, and low price.

1, a system design

embedded video monitoring system as the overall design, has two parts: First, the ARM chip embedded video monitoring terminal; second computer video receiver. The video monitoring terminal using embedded ARM chip is mainly responsible for the processing of video images in this system, including image acquisition, compression, image motion target detection, and video data transmission.

The computer video receiver is mainly responsible for receiving and saving images in the computer system in this system.

This paper presents the overall design scheme of wireless intelligent video surveillance system based on embedded ARM technology. The scheme includes the hardware design framework and software design flow of the system. The video monitoring end program is realized by using C language programming under Linux system, and the computer video is received. The end program is directly implemented using C language programming under Windows system. In this design, the wireless intelligent video surveillance system uses the C/S mode to implement video image transmission based on the TCP/IP protocol. The main task of the ARM video surveillance terminal is to wait for a connection request from the PC video receiver to perform continuous video image acquisition. The main task of the computer video receiver is to play and store the video, send a connection request to the video monitor, and receive and display the video.


Figure 1


Figure II

2, build

wireless intelligent video surveillance system video surveillance end embedded Linux system uses Samsung S3C2440 ARM-based chip architecture of the processor as a build embedded Linux on hardware systems using the processor The operating system acts as a development platform for applications. The process of building an embedded Linux system is mainly to establish an embedded cross-compilation environment. First, install the virtual machine, install the Linux operating system on the virtual machine, install the cross-compilation tool, compile and translate the kernel, set up the NFS network file server, and load the USB device driver. Complete USB device driver modification and porting.


Figure 3

3, ARM video surveillance program to achieve ARM's video surveillance program uses socket Socket programming, Socket is a specific protocol network programming interface, in the TCP / IP model, mainly located between the transport layer and application layer. It supports the TCP/IP protocol and is the basic operating unit for network communications.


Figure 4

A socket can be used as an endpoint for host communication. It is an object that Socket applications use to send or receive packets on the network. It can be used as a programming interface between networks. The video monitoring side program is programmed using a streaming socket interface, providing a byte stream with no record boundaries. The byte stream can be delivered without error in the correct order and provides a connection-oriented, reliable data transmission service. . The video monitoring program mainly realizes functions such as image collection, detection and transmission.


Figure five

The video and video monitoring end program is realized through Linux Socket design, thus realizing the functions such as image transmission processing of the video monitoring end.

4, computer video receiver application implemented using servfox

video surveillance servers for streaming media monitoring server, the camera data acquisition servfox run on ARM terminal then displays an image using the video player software on a computer. The receiving end application is a Windows program and is mainly written for the video capture software Servfox under ARM-LINUX. The video capture software captures JPEG images via USB and transmits video images via a USB wireless network card. The video transmission process in JPEG format means that a continuous frame JPEG image is transmitted. The function of the receiving end of the computer video software is to receive the picture sent by the video monitoring terminal and record it while the picture is displayed in the window. The program writes software code in C language and uses XML to store the USB captured video information. The computer video receiver application program realizes the control of video playback, including the start, stop, and pause of the video, realizes the control of the camera, including the addition, update, and deletion of the camera, and can also perform video surveillance on the moving objects that enter the monitoring range. And video recording.


Figure 6

5, during system operation

operation of the system via a computer HyperTerminal and development boards, the use of serial data transmission, the terminal may monitor the target through the super panel information, the target plate may also transmit commands, controls the operation target board.

In the running process, the embedded target board's ARM video monitoring terminal is started first. If a USB camera is connected to the target board and a wireless network card is connected, the system first runs the embedded operating system, and loads the camera and network card driver into the drive through the driver load command insmod. After the Linux kernel is successfully driven by the camera, the video monitoring program servfox running video capture can run normally. Then run the computer video receiver application and run the video playback software so that the entire video surveillance system can operate normally.

Conclusion

paper gives a solution to wireless video monitoring system based on embedded ARM technology. A cross-compilation environment for embedded system development was established. The operating system was transplanted, and the drivers for the wireless network card and USB camera under the embedded operating system were compiled and passed. Using the modular program design method, a wireless video based on ARM technology was designed. The monitor software and computer video receiver software were tested, and the operation of the system was tested. The results show that the entire video surveillance system in the program can be operated normally, thus realizing video monitoring.

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Applications

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The main prescription of Cimicifuga

The main prescription

1. Cimicifuga puerariae soup ("Ran's Pediatric Formula"), to relieve muscle rash, treat typhoid, epidemic fever, fever, headache, limb pain, and sores have not yet been made. Fang Yun’s selection of Wu Kun’s “Medical Examination” Volume 6: “The pulse of foot and Yang Ming is against the nose, so it is painful and dry to the nose. It cannot be insomnia, the Yangming is the stomach, and the stomach cannot be rested. At the beginning of this evil, there was no madness yet, no sweat, no chills, no fever, and there were cold evils. The medicine was ***ual, and the sims could make it to the table, and the light could make it real. The hemp and pueraria light are also light, so use it to reach the table and go to reality. Cold and evil wounded people also, the blood stasis lag, with peony, use and blood also; with licorice, with gas regulation also.”

2. Xuanxue published the soup ("pox rash end record"), relieve muscle rash, governance measles beginning, no desire to come out, heat and no sweat, cough, sore throat.

3. Cimiculi A soup side ("Golden Chamber"), the treatment of yang poisoning for the disease, the face red spots such as Jin Wen, sore throat, spit blood and pus.

4. Buzhong Yiqi Decoction ("Spleen and Stomach"), Bu Zhong Yi Qi, Sheng Yang raise depression, rule Qi deficiency, lazy words, fever, spontaneous sweating, thirst and warm drink, long diarrhea, long time, uterine غير مجاز مي باشدging , Anal prolapse, Qingyang subsidence and other evidence.

5. Lima Decoction ("Medical Center for Participation in Western Record"), Qi Qisheng depression, rule the chest in the atmosphere subsidence, shortness of breath, shortness of breath, difficulty in breathing, the pulse is weak late.

6. Yuan Yuan Jian ("King Yue Quan Shu"), Qi Qi Sheng mention, governance Qi deficiency subsidence, Xuela blood off, death yang is critical.

7. Cimicifuga pills ("Sheng Hui Fang"), treatment of throat pharyngeal occlusion, body fluid barrier.

8. Lima Tang ("San Franciscans"), rule the wind and heat, dizzy sores all over.

9. Lima Tang ("San Franciscans"), the rule began to be hard, purple skin, cold and hot, one or two days did not become a pus.

10. Treatment of postpartum evils is not complete or through January, half year old, one year old: Cimicifuga 150 grams. Five litres of sake will be boiled for two liters and then served. ("Prepare for the Thousand Gold Expenses")

11. Treatment of lung sputum vomiting pus and blood, as odor, chest pain between the pain: Chuanxi Ma, Campanulaceae (fried), Coix seed, earthworms, sub-cockroaches (skin scraping), peony bark, white peony root 25 grams of licorice 1.5 Ke. The upper kibbles serve 50 grams of water per serving and simmer until they reach the fifth. ("Premier Fang" Ci Ma Tang)

other

Fresh Food: Cimicifuga sinensis is the young stem of the Ranunculus plant before the leaves of the Ranunculus Cimicifugadahurica (Tur-CZ.) Maxim. Also known as bitter herbs, bitter teeth. Cimicifuga is a perennial herb, with two to three backs and three compound leaves, alternate and ovate. In the early spring, the juniper stems of the young (before the exhibition leaf) were collected and returned to the home. After cleansing, they were boiled with boiled water and served with salted water. The scent was refreshing and slightly bitter. The wonderful thing is that eating a bit of cohosh and eating a small rice porridge is bitter and sweet. It turns out that because of the polysaccharides in the millet and the ferulic acid and isoferulic acid in the cohosh, a hydrolysis reaction produces sucrose and fructose.

The young leaves can also be used for salad dressing, cooking or staple food filling. With detoxification, pharynx, swelling effect. Regulating gastritis, toothache, sore throat, mouth sores and so on. Can be used as wild vegetables.

Drying: After dipping the buds of Cimicifuga with boiling water, pay attention to separating the tender stems from the leaves and drying them. After winter, soak them in warm water and dip them.

Frozen storage: After dipping the buds of cohosh color with boiling water, they are kept frozen in a freezer and slowly frozen in cold water when consumed.

Pickling: Cinnamon shoots will be collected, bundled together with highly uniform rubber bands, cut into roots, marinated in saturated salt water, and desalted with warm water when consumed.

Taboo

Yin Yang floating, breathing full of gas reverse and measles has been through the permit Jifu served Cimicifuga. Excessive use can cause dizziness, tremors, arrested limbs and other evidence.


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This kit can separate and purify high-quality total RNA from various specimen, and can achieve safe, fast, convenient and efficient RNA extraction. This product can also perfectly fit with automated nucleic acid extractors with different throughputs. The magnetic beads can be absorbed, transferred and released by a special magnetic rod to realize the transfer of magnetic beads and nucleic acids and improve the degree of automation.

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Steel Marine Floor Deck Structure Roll Forming Machine

                            Model NO.: EN-130DF

                       

   

                            Material of Shaft: 45 Steel

                       

   

                            Maim Motor Power: 15kw

                       

   

                            Hydraulic Cutting Power: 5.5kw

                       

   

                            Control System: PLC

                       

   

                            Trademark: Ensource

                       

   

                            Transport Package: Plastic Film, Container

                       

   

                            Specification: EN-130DF

                       

   

                            Origin: Zhejiang, China

                       

   

                            HS Code: 845522100

                       

 

                    Deck Floor Roll Forming Machine




1.Main Components
Decoiler -------------------------------------------------- 1 Unit
Feeding guide ------------------------------------------ 1 Unit
Main roll forming machine --------------------------- 1 Unit
Hydraulic cutting device ------------------------------ 1 Unit
Hydraulic Station --------------------------------------- 1 Unit
PLC computer control -------------------------------- 1 Unit
Output table ---------------------------------------------- 1 Unit

2.Technological process

Uncoiler-Feeding-Leveling-hydraulic punching-Hydraulic cutting-Roll forming-Output table

Technical drawing



3. Technical parameter
 

Items Specifications
Material of coil Material Width 1250mm
Material Thickness 0.4-0.7mm
Uncoiler 5 tons manual
Forming system Rolling Speed 6-15m/min
Roller Stations 14 stations
Roller Material 45# steel, Electroplating 0.02-0.05mm
Material of shaft 45 steel
Shaft DIA D76mm
Maim Motor Power 15kw
Hydraulic cutting Power 5.5kw
Cutting system Material Of Cutting CR12Mov
Tolerance +-1.5mm
Electrical control system Electric Source 380V, 50HZ,3 phase
Control System PLC (Panasonic)
Way Of Drive 1.5inch single chain


FAQ
1)Q:Can you make machine according to my design?
   A:Yes, we have experienced technical team to work out the suitable design for you and confirm with you until you agree.
2) Q: Will you deliver the right goods as ordered? How can I trust you?
    A: Yes, we will. The core of our company culture is honesty and credit.
3)Q:What payment terms you accept?
    A:Commonly is TT, 30% deposit and 70% before shipment, and sometimes we can consider more for you as per your request.
4) Q:What is the warranty for our machine?
    A:We have one year guarantee, and provide whole life's technical support.

                           

Crankshaft

Crankshaft

zhejiang hongwei Cylinder co.,ltd , https://www.hongweicylinder.com


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Plastivision India 2017, Mubai

We honored to inform you that we will attend "PLASTVISION INDIA 2017" held in Mubai from Jan19th- 23th, 2017.

You can make an appoinment in advance or visit our booth directly. Warmly welcome !

Contact Person: Andy Lee sales@novistagroup.com

Contact Person: Ron Han manager.han@novistagroup.com

Booth No.: E16-7


INDIA-PLAST 


Tin Stabilizer

Methyl tin mercaptide stabilizer ProStab - T181

Substitute equivalent to American TM-181-FS

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What are the functions of dual screen visitor machines?

Dual-screen guest machines can quickly and easily register identity information by scanning the ID card and register visitors. This simplifies the complicated procedures for manual registration and reduces the workload of the company’s front desk staff. Let’s take a look at the dual-screen guest machine. effect:

1. Blacklist management, appointment function, enhanced identity management for visitors;

2. Distribute access control cards and print receipts (printing format can be customized);

3, set the door details, including permissions, coercion code, super password settings;

4, document scanning and identification, automatic entry of visitor information;

5, automatic telephone dialing, client prompts, eliminating the need to check the extension time;

6, real-time camera function, save visitors' real-time information;

7. The guard's surveillance function prevents other people from replacing visitors;

8, query and statistics functions;

9. Visitors can enter the door only through temporary cards or slips;

10, set the time information, normally open normally closed, holidays, etc.;

11, data backup and restore.

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Several sensor switches commonly used in electrical equipment

The sensor believes that you hear a lot, but I believe that everyone is still unfamiliar with the "sensor switch". What is a sensor switch? The following to understand from several aspects, I hope to help everyone!

I. Overview In all types of sensors, there is a component that has "feel" ability to approach its object - displacement sensor. This kind of sensor does not need to touch the detected object. When an object moves to the displacement sensor and approaches a certain distance, the displacement sensor has “perceived”. Usually this distance is called “detection distance”. The proximity switch is a switch that is made by using a displacement sensor to sense the proximity of an object.

Different sensors detect different distances. Sometimes the objects to be inspected are moved one by one at certain time intervals and one by one, so that they repeat continuously. Different sensor elements have different response capabilities to detection objects. This response characteristic is called "response frequency".

Second, the sensor classification Because the displacement sensor can be made according to different principles and different methods, and different displacement sensors on the object's "perception" method is also different, so the common sensors are the following:

1. Inductive Sensors Inductive sensors, also called eddy current sensors, consist of three major components: an oscillator, a switch circuit, and an amplifier output circuit. The oscillator generates an alternating magnetic field. When the metal target approaches this magnetic field and reaches the sensing distance, eddy currents are generated in the metal target, which causes the oscillation to attenuate and even stop vibration. Oscillator oscillation and stop changes are processed by the post-amplifier circuit and converted into a switching signal to trigger the drive control device to achieve non-contact detection purposes. Thus, the object that can be detected by this proximity switch must be a conductor.

2. Capacitive Sensors The measurement of such a sensor is usually a plate where the sensor is fixed to form a capacitor, while the other plate is usually grounded or connected to the housing of the device during the measurement process. When an object moves to a sensor, whether it is a conductor or not, because of its proximity, the dielectric constant between the two plates of the capacitor will always change, so that the capacitance of the capacitor will change, making the state of the circuit connected to the measuring head. It also changes along with it, thereby achieving non-contact detection. The object to be detected by this proximity switch is not limited to a conductor, an insulating liquid, a powder, or the like.

3. Hall-effect sensor When a metal or semiconductor sheet with a current is placed vertically in a magnetic field, potential differences are generated at both ends of the sheet. This phenomenon is called the Hall effect. The potential difference between the two ends is called the Hall potential U, and its expression is U=K·I·B/d, where K is the Hall coefficient, I is the passing current in the slice, and B is the applied magnetic field (Loren The magnetic induction intensity of L. C. Lorrentz), d is the thickness of the slice.

It can be seen that the sensitivity of the Hall effect is directly proportional to the magnetic induction intensity of the applied magnetic field. The Hall element belongs to such an active magnetoelectric conversion device and is a magnetic sensor. It is based on the Hall effect principle, using the integrated packaging and assembly process, it can easily convert the magnetic input signal into the actual application of electrical signals, but also has the practical application of industrial applications, easy operation and reliability The request. The Hall switch is made using this feature of the Hall element. Its input is represented by the magnetic induction B. When the B value reaches a certain level (such as B1), the trigger inside the Hall switch is turned over. The state of the output level of the Hall switch is also reversed. Transistor output is generally used at the output end. Similar to other sensors, there are NPN, PNP, normally open, normally closed, latched (bipolar), and dual signal outputs. Hall switch has the characteristics of no electric shock, low power consumption, long service life, high response frequency, etc. The internal use of epoxy sealing and integration, so it can work reliably in all kinds of harsh environments.

When the magnetic object moves close to the Hall switch, the Hall element on the detection surface of the switch changes the internal circuit state of the switch due to the generation of the Hall effect, thereby recognizing the presence of a magnetic object in the vicinity, thereby controlling the on or off of the switch. The proximity switch must be a magnetic object.

4, photoelectric sensor photoelectric sensor uses the photoelectric effect. The light emitting device and the optoelectronic device are mounted in the same test head in a certain direction. When there is a reflective surface (detected object) approaching, the optoelectronic device receives the reflected light and then outputs the signal, thereby "sensing" the approach of the object.

Optical proximity switches made with photoelectric sensors can detect a variety of substances, but have a large error in the detection of fluids.

5, pyroelectric sensor pyroelectric sensor can sense the temperature changes, the pyroelectric device is installed on the switch detection surface, when there is a different temperature and close to the object, the pyroelectric sensor output signal changes The proximity of the object can be detected by converting the sensor output signal.

6. Linear proximity sensor The linear proximity sensor is a kind of linear device that belongs to metal induction. After the power is turned on, an alternating magnetic field will be generated on the sensing surface of the sensor. When the metal object approaches this sensing surface, the metal will generate eddy currents. The energy of the oscillator is absorbed, and the amplitude of the oscillator output is linearly attenuated, and then the object of non-contact detection of the object is completed according to the change of attenuation.

The proximity sensor has no sliding contact, is not affected by dust and other non-metallic factors during operation, and has low power consumption, long life, and can be used in various harsh conditions. The linear sensor is mainly applied to the intelligent control of analog quantity in the automation equipment production line.

Third, characteristics 1, non-contact detection, to avoid damage to the sensor itself and the target.

2, no contact output, long operating life.

3. Stable detection even in harsh environments with water or oil splashes.

4, the reaction speed.

5, a small sensor head, flexible installation.

Fourth, the main purpose of these proximity switch sensors in aerospace, aerospace technology and industrial production in a very wide range of applications; in daily life, such as hotels, restaurants, garages automatic doors, automatic hot air have applications; in terms of security, such as information Archives, accounting, finance, museums, treasury, and other places are usually equipped with anti-theft devices consisting of various proximity switches. In measurement technology, such as length, position measurement; in the control technology, such as displacement, velocity, acceleration measurement and control, also have a lot of use. The method used is usually made into a proximity switch.

V. Application Cases Proximity Switch Sensors Applied to Metro Screen Doors With the rapid development of the domestic subway industry and the frequent occurrence of subway traffic accidents, subway screen doors will be used more and more by subway stations. Sensors are the best instruments for automated intelligent devices. Proximity switch sensors will be heavily used in the technical application of screen doors. Subway accidents will be minimized in the application of sensors.

Proximity switch sensor is a common scheme used by many screen door systems to detect door opening and closing. Generally, two door switches are used to detect door opening and closing. In addition, the amount of photoelectric switches used in the system is also very large, and all screen doors will use more sensor technologies. It is not difficult to see who has applied many sensor technologies and who will be the strongest in the market. Intelligentization and automation will rely on sensors to be closely linked.

6. Selection Principles In general industrial production sites, eddy current proximity switches and capacitive proximity switches are generally used. Because these two kinds of proximity switches require less environmental conditions.

When the object to be measured is a conductive object or an object that can be fixed on a metal object, an eddy current proximity switch is generally selected because of its high response frequency, good resistance to environmental interference, wide application range, and low price.

If the measured object is non-metal (or metal), liquid level, powder height, plastic, tobacco and so on. Capacitive proximity switches should be used. This switch has a low response frequency but good stability. The environmental factors should be considered when installing.

If the object is magnetically permeable or immersed in the object to be measured in order to distinguish it from objects that move with it, the Hall proximity switch should be used, which has the lowest price.

In the case of better environmental conditions and no dust pollution, photoelectric proximity switches can be used. When the photoelectric proximity switch works, it has almost no influence on the measured object. Therefore, on demanding fax machines, automatic machines, money detectors, power take-off switches and the like are widely used in tobacco machinery.

In anti-theft systems, automatic doors typically use pyroelectric proximity switches, ultrasonic proximity switches, and microwave proximity switches. Sometimes, in order to improve the reliability of recognition, the above-mentioned types of proximity switches are often used in combination.

No matter which kind of proximity switch is chosen, attention should be paid to the requirements for various indicators such as working voltage, load current, response frequency, and detection distance.

Explosion Proof Electric Hoist

Explosion-Proof Electric Hoist 

Maximum Load:1000-100,0000kg 

As a world`s leading Crane manufacture and service provider, we fit out our factory with first-rate manufacturing equipment, in addition to recruiting a team of ecperienced employees with great expertise. Hence we can ensure that every product products is completed to a high level of safety, reliability and quality. There are a full range of explosion-proof, spark-resistant electric chain hoists in our company that meet the latest explosion protection standards. Our products have been widely used in the food, chemical, and petroleum and natural gas industries as well as in any other potentially explosive environment.

We strictly follow the related ATEX 100a (94/90/CE) directives and CE directives in making qualified chain hoist that can be used in Zone1, Zone 2, Zone 21, and Zone 22 areas as classified in the ATEX directives.

Configurations: 

  •       Explosion proof classification: EEx de IIB T4 

  •       Standard lifting height: 3m

  •       One speed for lifting motion, or optional two speed for lifting motion  

  •       One speed for trolley travel, or optional two speed for trolley travel

  •       Degree of protection for motor: IP55

  •       Load moment limiter

  •       Pendant control station that contains an emergency stop button

Optional Configurations: 

  •       Explosion proof classification: EEx de IC T4 

  •       Upper Limit and lower limit switch

  •       Platform trolley that provides shorter headroom

  •       Remote control system

  •       Higher degree of protection

  •       Fire-resistant function: copper hook, copper lift wheel, anti-derail copper roller

  •       Anti-rotation hook

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Eurocrane (China) Co., Ltd. , https://www.craneparts.pl


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Rosebass Formula

Common formula

1. Rule the spleen and stomach full, cold attack on the heart, heart ache, two threats for expansion, dizziness, drowsiness of the extremities, vomiting, fever, diarrhea, stuffy: cubeing, galangal, cinnamon, clove, Magnolia (Ginger fried), Campanulaceae (go to Lu), dried tangerine peel, scallops (dried with vinegar), and licorice for one or two or five yuan, and Xiangfu (system). To be fine. For each serving of four money, three slices of ginger, one slice of water, seven minutes of frying, and slag serve. ("Bian's Heart Book" 荜成茄散)

2. The spleen and stomach are weak, and the chest is not fast. Do not eat into the diet. To be fine, the ginger beats the Divine Comedy to make a paste, such as Tongzi. For each meal, there are seventy pills and light food ginger soup. ("Ji Sheng Fang" Qi Cheng Wei Wan)

3. Treatment of coke congestion, gas upside attack, confidant pain: Cui Cheng eggplant half two, Liang Jiang 22, Divine Comedy (fried), Qingpi (go white), Guan Gui (peeled) one or two, A Wei half Two (vegetables wrapped in vinegar). On the end, vinegar, batter for the pill as a child large. Each serving of twenty pills, ginger soup, regardless of time. ("Xuanming Fangfang" Qicheng Eggplant Pills)

4. Treatment of typhoid fever day and night are uncertain: three-pointed eggplant eggplant, galangal three points. Two things are scattered. Each serving two money, water six minutes, fry more than ten boiling, stir into a little vinegar, and tea, such as enthusiasm. ("This Sketch")

5. No food is available for treatment: cubed eggplant and white bean pods. For the end. Dry up. ("Shou domain gods")

6. Treatment of bronchial asthma: غير مجاز مي باشدe pepper fruit, coix seed, yellow root (wild land) each five money. Shuijianbi. Don't eat sour and spicy.

7. Treatment of heat stroke: Shanzhijiao fruit one to two money. Shuijianbi.

8. Treatment of unknown name swollen poison: shank pepper fresh fruit amount. Smashed topical. (6 squares below “Zhejiang Folk Herbs”)


Engine Piston Parts

The piston is one of the main moving parts of the 

engine, is composed of combustion chamber components.

The pressure of the gas 

piston through the connecting rod to the crankshaft, realize the change from 

heat energy to mechanical energy.

The work condition is very bad, and the 

temperature of 1400-1800 DEG C, and pressure

Up to 13MPa above the gas 

contact, greatly alternating thermal stress and mechanical stress.

And by the 

serious corrosion of gas, and under the condition of boundary lubrication and 

cylinder wall friction and strong impact 1 times.

The piston in high 

temperature, high pressure, strong corrosive gas contact so that it has enough 

strength and hardness,

Heat resistance and good thermal resistance, high 

fatigue strength and corrosion resistance. For high speed diesel Engine Piston 

also requires light as far as possible.

In order to reduce the inertia 

force.

Marine piston large low speed diesel engine of the crosshead is 

usually combined.

The heat treatment process by normalizing and annealing, 

and iron pearlite are ferrite organization, has good heat resistance.

Piston 

alloy quenched and tempered steel has better heat resistance and corrosion 

resistance. The s******t with nodular cast iron annealing treatment, with good wear 

resistance.

Engine Piston Parts,Engine Parts ,Car Engine Parts,Parts Of Engine,Piston Engine Parts

ZhouShan HeCheng Machinery Co., LTD. , https://www.hcmarineparts.com


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Talking about the connection and installation method of rigid body slide wire

Rigid Body Sliding Line Connections 1. Rigid Body Slip Lines generally have the following three types of guides

Rigid Body Sliding Line Design Data and Calculation Method

2. The connection of the trolley wire is shown in the figure below

Rigid Body Sliding Line Design Data and Calculation Method

For connection, both ends of the slide wire are connected with screws through connecting plates. In order to prevent the expansion of the rigid body caused by temperature changes, a temperature compensation device is generally installed. When installing the temperature compensation device, a gap should be left at the connection. The gap size is shown in the following table:

Workplace ambient temperature 30°C 40°C 60°C 100°C Clearance dimension 3-5mm 5-7mm 7-9mm 10-15mm
The size of the reserved gap is related to the ambient temperature during installation. Generally, the high value is used during the winter installation and the low value during the summer installation.

Installation of the trolley wire 1. How to install the trolley wire. Two kinds of upper slides and side slides are generally used, as shown in the figure below.
Rigid Body Sliding Line Design Data and Calculation MethodRigid Body Sliding Line Design Data and Calculation Method

Upper sliding contact and side sliding contact

2. The installation bracket of the trolley is generally 3 meters. In special circumstances, the department also adopts strengthening measures to properly reduce the spacing. The phase-to-phase distance between the three sliding lines should not be less than 400mm. For example, the distance between high-voltage feeders should be appropriately extended.

3. The specific installation of the trolley line, our factory will provide detailed supplementary materials in time according to the user's design requirements. Now the general installation sequence of the upper sliding contact is briefly described as follows:

(1) Mounting Brackets In principle, the brackets should be installed perpendicular to the rails. All brackets should be level with the rails. The installation clearance is 3m-sets. In order to ensure the straight line of the rigid body sliding line, the vertical error of the bracket installation must not exceed 1cm, and the lateral error does not exceed 2cm.

(2) Install the insulator assembly Fix the insulator assembly on the reserved clearance hole of the bracket to ensure that the insulator is straight.

(3) Install rigid body slid wire First, loosen the platen screw on the insulator assembly, place the rigid body slide wire on the rigid body seat, and then tighten the platen screw. The rigid body slid line should be placed in the middle of the bracket and the bracket (see below) Figure)

Rigid Body Sliding Line Design Data and Calculation Method

(4) Connecting the slide wire Use rigid splints at both ends of the rigid body slide wire to fasten the screws (refer to the fourth part of the slide wire connection) to ensure that the slide wire connector is flat. Note that the length of the slide wire connecting splint is 22cm. The joint gap is 3-5 (mm).

(5) Installation temperature compensation device In order to prevent the expansion caused by the temperature change of the rigid body, the temperature compensation device is generally designed for the rigid body slide wire. The factory will make special design according to the design requirements. During installation, the temperature compensation device is connected with a special splint (length 25cm) fixed on the reserved clearance holes at the two ends of the rigid body sliding wire (see figure). In order to ensure that the rigid body slid wire expands and contracts under the temperature change, the connection screw cannot be tightened and adopted. Double nut fastening, after the completion of the temperature compensation device connected to the cable to be fixed.

Rigid Body Sliding Line Design Data and Calculation Method

(6) Section Inspection and Isolation Device The section inspection and isolation device is made of epoxy resin insulation board. The installation location is determined according to the manufacturer's requirements. For the installation method, see Part III E Section Maintenance and Isolation Device.

(7) Current collector mounting bracket. I plant on-site production according to the site installation, and then the fixed collector, after installation, the collector pressure limit film should be put down, in order to ensure good brush and sliding plane pressure (collector factory pressure limit, set The electric brush part can be pulled up to release the lower limit piece).

(8) Auxiliary cable fixing clips Auxiliary current fixing clips should generally be installed on both sides of the sliding wire. For the mounting method, see section 3 (Auxiliary Current Fixing Clips).

(9) Power supply terminal installation The power supply terminal is installed at the connection point of the rigid body slide wire. The installation method refers to the upper part of the third part F.

For user installation, if side sliding is used, the factory will provide detailed materials at any time to supplement the instructions and send personnel to guide the installation.

Automatic Roll Forming Machine

Automatic Roll Forming Machine is high efficiency Adjustable roll former, suitable for big scale production and wide range of same type profile, such as C, Z, U, cable tray, door panels, racking shelf,etc.

The adjustment between different sizes of same type profile is automatic, uncoiling, progressive punching, roll forming, shearing and stacking can be automatically realized in one production line. The Automatic Adjustable Roll Forming Machine is popular in world market, welcome your inquiry!

Automatic Roll Forming Machine,Adjustable Roll Forming Machine,Automatic Cable Trunking Machine,Adjustable Cold Roll Former,Door Panel Roll Forming Machine

Wuxi Jinye Complete Set of Equipment Co.Ltd. , https://www.jinye-machine.com


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Beijing AMB's Aspect 1: Feng Runda Industry PoE Power Supply Total Solution

It took less than a month from the 2016 Beijing Ambosee Fair, in order to shine in this security feast, all security companies will go all out. As a world-leading provider of transmission products & services, Feng Runda has also made preparations. This time, AMB will exhibit one of the company's core technologies, PoE Power Supply Total Solutions.

In early monitoring, the camera usually requires an external power supply, and it requires that there must be a power supply in the vicinity. The conversion from 220V AC to the DC required by it will not only increase the غير مجاز مي باشدt but also cause inconvenience. With the development of the Internet and the advancement of security technologies, the 48V power supply provided by the switch is the development direction. Currently, PoE power supply technology and its overall solutions have been widely used in security network monitoring.

One, PoE switch: high power, intelligent stability, precision design


Feng Runda focused on the field of PoE power supply for ten years and launched numerous PoE switches, PoE power supplies, and PoE separators. In the first half of 2016, 10 Gigabit PoE switches were heavily launched. The company's PoE product line was unprecedentedly improved, providing strong support for the overall PoE power supply solution.

Feng Runda has the most complete PoE product line and has a leading market share in the PoE industry. Feng Runda PoE switch is equipped with imported top Japanese power supply, 440W high power, to ensure that each terminal has an absolutely stable intelligent power supply; the use of the United States top-level switch chip to ensure that users use the best quality, stable PoE switches; network latency up to 20 microseconds ( Use 64-byte packet size to ensure high-definition video and smooth video.

Second, security PoE power supply solutions: convenient, simplify network architecture

In the field of security, smart cities and safe cities are large-scale and complex business systems involving security, surveillance, command and communications, investigation, law enforcement, and social services. Video access scales from thousands to tens of thousands. , access to web cameras are numerous. How to more convenient construction and power take, to a certain extent, determines the reliability and stability of the entire network monitoring system.

Feng Runda uses the unique advantages of PoE switches in the security field, combines the company's Ethernet switches and DF series 10-Gigabit switches to launch a PoE power supply overall solution for security monitoring, simplifying the network architecture, and reducing construction غير مجاز مي باشدts and maintenance difficulties.

Figure: The overall solution for security PoE power supply


Figure: Micro Security PoE Solution
Figure: Medium Security PoE Solution
The above is a series of PoE power supply solutions proposed by Fengrunda for the security field monitoring system. PoE switches are used to provide stable power support for front-end surveillance cameras, as well as powerful data processing, transmission, and forwarding services. Video data is transmitted to terminal display devices through 10-Gigabit switches. PoE splitters can also be used for non-PoE network cameras.

Feng Runda's PoE switches have high performance, high bandwidth, low latency, and intelligent management, and other fine brand products do not have the excellent performance to ensure the clear and smooth monitoring screen.

Third, the monitoring industry's all-Gigabit 4K solution: Ultra HD, smart, stable

The 10-Gigabit 4K solution is based on 10-Gigabit PoE switches and 10,000 core switches. It uses advanced communications and information technologies to build a 10-Gigabit-to-end intelligent management and monitoring solution featuring ultra-high definition and intelligence.


All 10-Gigabit switches use the highest-end, most advanced switch chips in the United States. They have a high backplane bandwidth and a very high packet forwarding rate, enabling them to obtain powerful data processing and forwarding capabilities to ensure that the front-end of the monitoring system can be smoothly brought. 4K ultra-high-definition camera, and can make its monitor picture extremely clear and smooth.

At the same time, the solution has a powerful intelligent management system and stable PoE power supply performance, which can effectively provide customers with convenient and intelligent management services and provide powerful and stable PoE power supply capabilities for the entire monitoring front-end. Let the entire monitoring system achieve extreme intelligence and stability.

Fourth, Feng Runda PoE power supply overall solution Advantages: Five values

1. Targeted design, clear architecture


Based on years of experience in the field of security, designed specifically for security monitoring applications, strong adaptability, not only for network monitoring, but also used in analog monitoring to network monitoring transformation scene; eliminating the cumbersome wiring project, the structure is clear, in the late In the maintenance and management, it is intelligent and convenient.

2. Simplify networking and reduce maintenance difficulty PoE switch networking, through the network cable to the surveillance camera power supply, eliminating the need for cumbersome cable laying, no power adapter, not bound by the cable, the camera can be placed arbitrarily, the network is more flexible, And greatly facilitate the post-maintenance.

3. Beautiful cabling and high security PoE power supply is adopted. A network cable solves the problem of network transmission and power take-up of the camera. There is no complicated power line, no digging hole is needed, front-end installation is introduced to ensure the aesthetics of the wiring, and weak current networking , reduce the risk of system and maintenance. The PoE switch has been designed for professional lightning protection. The network cable does not exceed 100 meters. It is not easy to form an induced potential to damage the electronic components of the camera.

4. Intelligent power supply, strong system compatibility


The PoE switch has the function of supporting the power identification circuit, which does not cause waste of electrical energy and effectively saves energy; the entire transmission system is built with a unified brand of equipment, and the compatibility between various devices is strong, and the role of the transmission system is maximized to ensure data. Transmission and power transmission effects to ensure high-quality video quality.

5. Resource sharing, overall management


The use of high-definition network monitoring equipment network, clear screen, combined data transmission, networking is simple and fast, data sharing, interconnection, interoperability, strong mobility, remote storage monitoring can be implemented, the establishment of a number of monitoring management center collaborative management.

Modern monitoring systems are gradually becoming networked and centralized, allowing city managers to truly listen to the Quartet, see the world, and plan strategies. PoE power supply plays a significant role. The Beijing AMB fair, Feng Runda will fully display PoE switch series products and overall solutions, winning a thousand miles away, becoming the most shining star.

Straw Pellet Machine

We are manufacturer of Pellet Press in China, if you want to buy Straw Pellet Mill,Straw Pellet Making Machine,Straw Pellet Press please contact us.



Model     Power(kw)Fiber Capacity(t/h)Fertilizer Capacity(t/h)

SKJ3-350   37         0.3-0.5                       0.6-1.2

SKJ3-450  55       0.5-0.8                   0.8-1.5

SKJ3-550  55/90   0.7-1.2                 2-3

SKJ3-800   130/160   1.5-2.5                  3-5



Pellet Press,Straw Pellet Mill,Straw Pellet Making Machine,Straw Pellet Press

Shandong Yulong Machine Co.,Ltd , https://www.yulong.cc


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At present, China's hardware development is still optimistic

At present, China's hardware development is still optimistic

Since the barriers to entry into the hardware industry are not high, there are many companies engaged in this industry. The domestic hardware industry has a huge market, but the company is still in a small and scattered state. At present, there is no listed company in the domestic hardware industry. With the closing of some hardware companies, the domestic hardware industry has officially entered the reshuffle period, and large companies with independent research and development capabilities and brand advantages will come to the fore.

In recent years, hardware companies have sprung up everywhere, all over the country. However, due to the old concept of production, many SMEs still remain in the pursuit of quantity, and product quality is difficult to guarantee. The vast majority of hardware companies still mainly focus on small workshop-style shops, with scattered shops and weak brand awareness. This caused the hardware industry to be scattered, chaotic, and small. The old business model is far from being able to adapt to the rapidly growing market situation.

Dealers are starting from the point of view of small-brand products with low prices and easy access to third- and fourth-tier cities. This leads to small differences in hardware products, fierce market competition, and weakening of corporate profits, thus prompting the majority of products to fight prices and fights. service. The vast majority of manufacturers do not have innovative R&D capabilities and continuous development strategies. They just blindly copy and copy. Their product processes and styles are almost the same. The homogenization of the entire market is very serious. The business model is single and conservative, which seriously causes the hardware industry to enter. The vicious competition of prices.

In view of the above problems, hardware companies should actively increase technical equipment updates and product updates, and quickly complete the development of products from low-grade products to high-end products, shifting from price-based to high-quality, high-tech product competition.

With the fierce competition in the hardware industry, the overall profit space of the hardware industry chain is constantly being compressed, and the space for price reduction is shrinking. Therefore, hardware companies should be aware that the price war has now can not enhance their core competitiveness, is not conducive to long-term development of enterprises, enterprises must actively explore a new development path from the root. The hardware industry is still in the development stage, and the market consumption potential remains to be tapped. Enterprises should also increase investment in technology, develop new products with high-tech content, take product differentiation as a long-term plan for enterprise development, and seek new market demands in order to achieve sustainable development of the company.

 

     

Round Ductile Manhole Covers

 

Round Ductile Manhole Cover is made of ductile;

mainly both the cover and frame is in round condition, we make the manhole

cover on BS EN124, Mainly our products are A15, B125, C250 and D400, sometimes

also make it E600 and F900 in case of need. For A15, B125, C250 and D400

ductile manhole covers to be used in Green belt, Pavement, Auxiliary road, Main

road and Express way. We make ductile manhole covers all by producing line, the

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Ductile Manhole Cover Co 650 D400 With Hinge

 

Ductile Manhole Cover Co550 Cover Jpg

 


 


 

Ductile round manhole covers, Ductile round manhole covers D400, Ductile round  manhole covers opening 600.

Zhoushan Runchun Import & Export Co., Ltd. , https://www.en124casting.com


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