Pay attention to the suitability of choosing ppe Pay attention to the suitability of choosing ppe .

Pay attention to the suitability of choosing ppe

Energy Legislation Abuse: The Final Trouble in New Energy Development

“The draft of the consultation has been reported to relevant leaders and will be reported to the State Council soon.” On March 3, at the “China DME Summit”, Xu Mingming, deputy director of the Office of the National Energy Leading Group and head of the drafting expert group, disclosed This news.
Prior to February 29, the New York Mercantile Exchange overnight electronic session, April light sweet crude oil futures prices reached a record high of 103.05 US dollars a barrel.
On the same day, in the “Chinese Inventory 2007” event just concluded, 1.3 million Internet users voted for the most popular international word for the “oil” word.
This is not only the memory of 2007, but also the reality of 2008. Deng Yusong, director of the Comprehensive Research Office of the Institute of Market Economy at the State Council Development Research Center, said: “The situation of frequent and volatile oil prices will not change in the short term.”
“National Standards” are Desiring Higher oil prices, on the one hand, have accelerated China’s steps to accelerate energy legislation and on the other hand have also expanded the path of alternative new energy sources. In particular, according to the energy endowments of “less oil, more coal, and lack of gas” in China, there is actually much room for green clean energy using coal as raw material.
It is predicted that by 2020 China's oil production will remain at around 200 million tons, oil consumption will reach 450 million tons to 510 million tons, and the dependence on imported oil will reach more than 55%. The pressure on energy supply is huge. China's proven recoverable reserves of coal are 1.02 trillion tons, accounting for 11% of the world's total reserves. The medium and long-term development seems to be available for a century.
“China’s steps in coal deep processing and clean utilization, including the replacement of alcohol ethers, are still not large enough,” said Xu Mingming. “The key to energy development in China in 2008 is to focus on energy conservation, new energy development, green energy, and clean energy. Use."
The dimethyl ether (DME), known as "sister fuel" for liquefied gas (LPG), has been proven to be the cleanest fuel after hydrogen for more than a decade of research. The largest potential use is as a substitute for city gas and liquefied petroleum gas, which is used as fuel for electricity generation and heating for civilian use. In a strategic sense, it can be used as a supplement to petroleum energy, replacing diesel as a fuel for clean vehicles.
In terms of غير مجاز مي باشدt, LPG price is 6500 yuan per ton, DME غير مجاز مي باشدt price is 3000-4000 yuan per ton, and the ratio of DME to LPG replacement is about 1.2-1.0:1, and the space for غير مجاز مي باشدt reduction is also large.
For this reason, as early as in 2006, the NDRC has issued a document saying: "The development of coal-based alcohol ether fuels such as dimethyl ether will help ease the oil supply shortage quickly, and is the focus of recent substitution work."
However, although 100% replacement with liquefied gas can be achieved technically, the industry's eagerly awaited introduction of the dimethyl ether national standard has been delayed. According to Chen Weiguo, secretary-general of the Professional Committee of Alcohols of the China Petrochemical Association, in view of the same name as the construction industry standard ("DME dimethyl ether for town gas" has been approved and implemented on January 1 this year), The relevant provisions of China's standard management, the existence of national standards to cover the issue of industry standards. “So the standard compiling team is drafting a report, and it is proposed that this national standard be renamed as 'Dimethyl ether mixture for town gas',” Chen said.
In this regard, the New Austrian Group, which has a complete new energy industry chain and one of the dimethyl ether standard participating companies, is confident. The president of the group, Yang Yu, told this newspaper: “We have both stable upstream coal and methanol supply, and a terminal logistics and distribution system. At present, more than 90% of our dimethyl ether products are used for blending with LPG, and the rest are used. For aerosols and cutting, but this is only the first step towards industrialization. In the future we need to find a better direction, that is, to replace diesel and liquefied gas."
The clean energy market urgently needs to be planned. Enterprises in the terminal sector may not be calm enough.
A person in charge of the LPG three-level station from Gaoyou, Jiangsu, complained to the reporter: “We are now generally using 20% ​​DME to burn liquefied gas to reduce غير مجاز مي باشدts, but whether it is allowed is still a problem, and the business sector will not. Therefore, the third-grade station is punished. In addition, there is no technical problem in transporting dimethyl ether using the LPG tanker, but the state stipulates that the dangerous goods transporter cannot replace the product arbitrarily. Then the public security and transportation departments found out how to deal with the punishment. ?"
In other words, the use radius and transport radius of dimethyl ether are severely limited. In this regard, Secretary-General Chen Weiguo of the Committee of Alcohol Ether is also quite helpless, because there is no guarantee of standards and regulations, if the punishment is "justified." As a result, new energy sources that have been strongly promoted in the theoretical community have in reality emerged "as long as the economic benefits can be sold without anyone's control."
In addition to the dilemma brought about by the absence of legal protection and standards, the market planning for alternative new energy is also a problem that needs to be solved urgently.
Take dimethyl ether as an example. Although China is the first country in the world to use DME for large-scale industrial production, it is the world leader in commercial applications. However, the contradiction between the dimethyl ether production capacity and the market capacity has not been well resolved, and it has become increasingly fierce.
According to Tian Chunrong, senior engineer of the Sinopec Information Department, at present, the liquefied gas market for civilian and automotive use in urban and rural areas can provide 2.9 million tons of DMC blending capacity; according to conservative estimates, this market capacity will increase to 3.3 million tons by 2010.
However, in recent years, China’s dimethyl ether production has grown explosively. In 2002, the production capacity and output were only 30,000 tons and 20,000 tons respectively, but it is estimated that by 2010, only new production capacity will reach 10 million tons, and the total production capacity will reach 16 million tons. How to deal with surplus production capacity? How to successfully introduce the improved and growing products into practical areas, and truly realize industrialization?
In response, Xu Mingming said to reporters very firmly: "Alternative energy is not enough? The technology speaks; no use? The market speaks." He believes that the "long march" method of long-distance transportation in China's energy industry is contrary to the law of energy. In the field of new energy, the government should establish standards as soon as possible to cultivate the market, build a mature pipeline, and make adequate preparations for large-scale use in the future.
Deng Yusong also believes that since the fuel-consuming retrofit cycle is generally 6-8 years, the policy utility will usually be conducted and reflected after 6-8 years. He said that although there are still relatively few oil and gas substitute products with economies of scale, economy, cleanliness, and safety at the same time, the development of the new main varieties is still a long way, but it has ushered in the best period of development.

   

Excavator Bearing

Excavator Bearing,Koyo Excavator Bearing,Excavator Turntable Bearing

Ruihode Bearing Co., Ltd. , http://www.sdrollerbearing.com


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March 5 Shenyang Steel Market Price Quotes

The product name specification material steel factory/origin price (yuan/ton) is Φ6.5mm higher than yesterday's last week. General line Φ6.5mm Q235 Tonggang 4940 0 180 600 General line Φ6.5mm Q235 Siping red mouth 4910 0 180 600 High line Φ6. 5mm Q235 Steel 50000 180 600 High Line Φ10mm Q235 Steel 50000 180 600 High Line Φ8mm Q335 Beitai 5000 0 180 600 Rebar Φ12mm HRB335 Tong Steel 4940 0 190 590 Thread Steel Φ14mm HRB335 Tong Steel 4940 0 190 590 Rebar Φ16 -25mm HRB335 Linggang 4870 0 190 600 Rebar Φ16-25mm HRB335 Steel 4870 0 190 600 Rebar Φ16-25mm HRB335 Beitai 4870 0 190 600 Rebar Φ16-25mm HRB335 Xilin 4870 0 190 600 Rebar Φ8-10mm HRB400 New Fushun 5250 0 200 680 Rebar Φ8-10mm HRB400 Steel 5250 0 200 680 Hot rolled coil 2.0*1250*C Q235 Steel 5880 0 150 700 Hot rolled coil 2.3*1250*C Q235 Hot rolled steel 5750 0 150 700 Hot rolled Roll 2.75*1250*C Q235 Angang 5650 0 150 700 Hot rolled coil 3.0*1250*C Q235 Angang 5600 0 150 700 Hot rolled coil 3.0*1250*C Q235 Benxi Steel 5600 0 150 700 Hot rolled coil 4.0*1250*C Q235 Angang 5400 0 100 750 Hot Roll 4.75*1250*C Q235 Angang 5400 0 100 750 Hot Roll 5.5*1500*C Q235 Steel 5400 0 100 750 Hot Roll 5.5*1500*C Q235 Steel 5400 0 100 750 Hot Roll 6.5*1250*C Q235 Ben Steel 5400 0 100 750 Hot Roll 7.5*1250*C Q235 Ben Steel 5400 0 100 750 Cold Rolled Plate 1.0*1000*2000mm Q195 Angang Steel 6530 0 180 780 Cold Rolled Plate 1.0*1250*2500mm Q195 Ben Steel 6530 0 230 880 Cold Rolled Plate 2.0*1250*2500mm Q195 Angang 6500 0 200 850 Cold Rolled Roll 3.0*1000 *2000 Q195 Benxi Steel 6530 0 180 780 Puzhong Plate 8mm Q235 Jigang 6650 0 250 820 Puzhong Plate 8mm Q235 Angang 6650 0 250 820 Puzhong Plate 10mm Q235 Angang 6150 0 250 820 Puzhong Plate 10mm Q235 Jigang 6150 0 250 820 Puzhong Plate 16-20mm Q235 Angang Steel 5900 0 250 820 Puzhong Plate 16-20mm Q235 Sky Steel 5900 0 250 820 Low Alloy Plate 8mm Q345 Angang 6800 0 250 870 Low Alloy Plate 10mm Q345 Angang 6300 0 250 870 Low Alloy Plate 14mm Q345 Angang 6150 0 250 870 Pattern Plate 3mm Q235 Angang 5600 0 150 670 Pattern Plate 4mm Q235 Angang 5600 0 150 700 Pattern Plate 5mm Q235 Angang 5600 0 150 700 Pattern Plate 6mm Q235 Angang 5600 0 150 750 Container Plate 8mm 16MnR Ansteel 6750 0 0 570 Container Plate 10mm 16MnR Shougang 6700 0 0 600 Container Plate 12-20mm 16MnR Shougang 6700 0 0 700 Boiler plate 8mm 20g Jinan Steel 7050 0 150 920 Boiler plate 12mm 20g Jinan Steel 6750 0 150 770 Boiler plate 20mm 20g Angang 6550 0 150 670 Tinplate 0.21mm*1024*712 T57E Wugang 9700 0 200 600 Tinplate 0.25mm*1024*712 T57E Wuhan Steel 9600 0 300 600 Color Coil 0.5mm*1000*C TST01 Baosteel 8200 0 100 200 Color Coil 0.6mm*1000*C TST02 Baosteel 8050 0 0 100 Galvanized Coil 0.5mm*1000* C SGCC Hengtong 6700 0 200 650 Galvanized coil 1.0mm*1000*C ST02Z Bengang 6350 0 150 850 Seamless pipe 60*4mm 20# Angang 6250 0 0 550 Seamless pipe 108*4.5mm 20# Angang 5650 0 0 0 Seamless tube 133*4.5mm 20# Angang 5750 0 0 100 Seamless tube 159*5mm 20# Angang 5750 0 0 100 Welded pipe 1.5 inch *3.0mm Q235 Linggang 5270 0 20 450 Welded pipe 2 inch *3.25mm Q235 Linggang 5290 0 40 470 Welded pipe 3" *3.25mm Q235 Linggang 5290 0 40 470 I-beam 12-16# Q235 A-steel 5150 0 200 800 I-beam 25# Q235 Angang 5400 0 300 850 Channel 16# Q235 Angang 5150 0 200 750 channel steel 25# Q235 large rolling / 0 0 angle steel 50*5mm Q235 steel 5050 0 250 800 angle steel 100*100mm Q235 steel 5100 0 200 700

 

Barbed Wire Machine

Barbed Wire is widely used for the isolation of national defense, industry, agriculture, transportation, agriculture, animal husbandry and other fields. Our barbed wiremaking machine is low price and we gurantee good quality. We have exported many sets of our barbed wire machines to African countries.

Barbed Wire Machine,Barbed Wire Making Machine,Barbed Net Machine,Barbed Wire Equipment

Dovin limited , https://www.dovinmachine.com


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Analysis of the causes of the failure of the mud pump in Haitan Pump and its remedies

Mud pumps are generally used in rural areas as river mud, excrement, river water, and slurry feed to provide water for irrigation, instead of picking shoulders for people, as well as for drainage and drought resistance, it is also possible to carry car heads, river mud, and compost production. It can also be used as a simple fire pump in rural areas. It can also be used as a fish-to-water clear pond, and oxygen in fish ponds. Can also be used in municipal, chemical, printing and dyeing, pharmaceutical, shipbuilding, foundry, food and other industries to pump thick liquids, contaminated liquids, pastes, quicksand and flowing sludge in urban rivers, etc. can be used as coal mines to exclude gravel and small gravel The fluid. If high-pressure water pumps and water guns are combined to form a hydraulic mechanized earthwork unit, they can be used for excavation and transportation of land leveling, river courses, ponds, air defense, and underground projects. Mud pump failure causes and remedies.

Slurry pump failure 1: Pump does not absorb water

Reason: perfusion enough water, air can not be discharged in the pump, the suction pipe leak, front liner and impeller large gap Solution: Continue filling water, check the pipe leaks, the front plate and the gap adjusting impeller

mud pump fault 2: slow pump Sheung Shui
Reason: a large front liner and impeller clearance, the air outlet duct is not sealed, evacuated full solution: gap adjustment, adjusting the water outlet pipe, a vacuum device mounted

mud Fault 3: Small water pressure, flow small

Causes: There is air in the pump, large gap between the impeller and the front liner, the clutch is not tightly closed, and the impeller or liner wears. Solution: Drain the air in the pump, adjust the clearance, adjust the clearance of the clutch friction plate, replace the impeller or the liner
Slurry Pump Fault 4: Water Pump Vibration

Causes: Concentricity between pump shaft and diesel engine (or motor), imbalance of impeller, bearing damage Solution: Adjust concentricity, balance test impeller, replace bearing
Slurry Pump Fault 5: Impeller Shaft Wears Fast

Reasons: High head of low-pressure pump, dislocation of packing, misalignment of pump shaft and back cover. Solution: Replace the high pressure pump above the head of mud pump, replace packing, adjust concentricity
Slurry Pump Fault 6: Pump Wears Fast

Reasons: poor construction environment (large particles), long transportation distance, long inlet pipe Solution: Replace the sand yard, add afterburner units, shorten the length of the inlet pipe, reduce the cavitation double-stage water ring vacuum pump, double-stage rotary vane vacuum pump , Stainless steel submersible sewage pump, non-clogging sewage pump, stainless steel self-priming sewage pump, vertical pipeline sewage pump.

Polyester Nylon Bags

Polyester Nylon Bags,Drawstring Shoe Bags,Polyester Drawstring Bag

Coffee Accessories Co., Ltd. , http://www.fjbackpacks.com


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God's perspective! MIT R&D Warehouse Tracks Drones Your Express Will Be Faster

[Netease Smart News, August 28th] This small, safe drone can be used with existing RFID devices.

Imagine a micro-drone rumbling in a warehouse that can automatically track and monitor remote inventory, allowing workers to freely manage and move materials. This is a new system developed by researchers at the Massachusetts Institute of Technology to prevent mismatches. The above empty perspectives help employees find specific products more quickly and enable a group of workers to move around quickly.

Most importantly, a report describing the system showed that small drones are safe when they fly around. They read inventory RFID tags “outside tens of meters” with a tolerance of 19 centimeters. However, this kind of micro-drone that is safe in the warehouse is not big enough to carry an RFID reader with a large enough data transmission range. Therefore, MIT researchers only let the drone and the standard reader transmit signals. Then fly back. This means that these small fleets can use existing RFID reading systems, software and tags.

"From 2003 to 2011, the U.S. military lost .8 billion in its warehouse," Fadeldib said. He is an assistant professor of career development at Sony Corporation and he developed this new system at the MIT Media Lab team. In 2016, the National Retail Federation of the United States announced the shrinkage of retail stores—an average of approximately .2 billion per year. Let drones find and locate items and equipment. This study will provide a fundamental technological advancement to solve these problems. ”

RFID is not a flashy technology that used to be used to save alcohol, track aquarium wildlife, or update patient tracking records in hospitals. It is also used in a large number of warehouses, so the MIT system, which was nicknamed "RFly" in the research team's paper, may be a new way of automatically tracking inventory. Especially when Amazon's drones begin to ship goods directly from the warehouse. (From: engadget and  庵 庵 庵 庵 藸 藸 藸: Li Mu晗)

This article is produced by NetEase Smart Studio (public number smartman 163). Focus on AI and read the next big era!

                   

Fbt Coupler

1x2 Fbt Optical Splitter,Single Window Optical Fiber Splitter,Upc Fbt Optic Fiber Splitter

TTI Fiber Communication Tech. Co., Ltd. , http://www.gdfiberoptic.com


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Progress in research on lignin degradation

The Biomass Energy Group of the Xishuangbanna Tropical Botanical Garden of the Chinese Academy of Sciences in a joint study with Tohoku University in Japan and the University of Saskatchewan in Canada found that when phenol is added, lignin can be completely dissolved in high-pressure hot water. The researchers explained that this is because high-pressure hot water can promote the hydrolysis of lignin to phenol oil, and the addition of phenol can prevent the re-polymerization of the hydrolyzed phenol oil.

In published research papers, researchers have clarified the path and mechanism of lignin degradation reactions under high pressure hot water conditions. According to this reaction path, lignin can be completely degraded into phenol oil and can be further processed into bioplastics, chemicals and biofuels.

Lignin is a polymer composed of phenols and has long been considered as the most stable and most difficult to degrade by biological and thermal conversion methods. Fiber alcohol and waste from paper mills contain a lot of lignin. This study is of great significance for the recycling of lignin.

   

Water Tank Semi Trailer

Fuel Tank Semi-Trailer,Stainless Steel Water Tanker Trailer,Axles Water Tank Trailer

refrigerated truck Co., Ltd. , http://www.whtanktruck.com


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High Speed Plastic Horizontal Mixer

  • Model NO.: SRL

  •                                                                                                                                                                                                                                            

  • Working: High Speed Mixer

  •                                                                                                                                                                                                                                            

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

  •                                                                                                                                                                                                                                            

  • Application Area: Chemical

  •                                                                                                                                                                                                                                            

  • Mixing Drum Shape: Drum

  •                                                                                                                                                                                                                                            

  • Operating type: Continuous Operating

  •                                                                                                                                                                                                                                            

  • Dimension(L*W*H): According to Each Model PVC Horizontal Mixer

  •                                                                                                                                                                                                                                            

  • Trademark: Fungwah

  •                                                                                                                                                                                                                                            

  • Specification: 11-110KW

  •                                                                                                                                                                                                                                            

  • HS Code: 8479820090

  •                                

  • Mixer Type: Agitator

  •                                                                                                                                                                                                                                            

  • Stirring Type: Spiral

  •                                                                                                                                                                                                                                            

  • Certification: CE, ISO

  •                                                                                                                                                                                                                                            

  • Layout Type: Horizontal

  •                                                                                                                                                                                                                                            

  • Additional Capabilities: Drying

  •                                                                                                                                                                                                                                            

  • Condition: New

  •                                                                                                                                                                                                                                            

  • Warranty: 1 Year

  •                                                                                                                                                                                                                                            

  • Transport Package: Wooden Case and PE Film

  •                                                                                                                                                                                                                                            

  • Origin: Zhangjiagang

  •                                                                                                                                                                                        

 

                                                                   

Plastic horizontal mixer / plastic powder mixing machine
High Speed Plastic Horizontal Mixer

Introduction of  pvc horizontal mixing machine :
SRL-Z series high speed mixer unit is widely used in mixing, drying, coloring various kinds of resin such as PVC, PP, PE.,they can also be used in dryness of ABS and polycarbonate, and mixing polycarbonate , hydroxybenzene, aldehyde resin.

The unit is consisted of one hot mixer and one cooling mixer. The materials from hot mixer get into the cooling mixer automatically to be cooled after high speed heating , in order to exhaust remained gas and avoid agglomeration .It is qualified for various kinds of plastic material mixing and one ideal machine for different plastic product production.

High Speed Plastic Horizontal Mixer


Features of  pvc horizontal mixer
Adopt advanced technology, we designed SRL-Z series heating/cooling mixer unit, which offers high automatic level, good mixing effective, complete function, compact structure, and perfect appearance. The unit is widely used in mixing, drying and coloring various plastics.
Long service time ,due to all barrel inside material is stainless steel .
Blades material is high quality stainless steel, which pasted the dynamaic and static test

High Speed Plastic Horizontal Mixer

Main technical parameter of horizontal mixers unit

Type

Capacity(L)

Effective Capacity
(L)

Paddle Speed
(r/min)

Motor
(kw)

Heating Cooling
Method
Discharge
Method

Water Consumption
(T/h)

Weight
(kg)

SRLW200/500 200/500 150/375 500/1000/100

30/42-7.5

Electric, self friction / water Pneumatic 3 2500
SRLW300/600 300/600 225/420 500/1000/100

40/55-11

Electric, self friction / water Pneumatic 4 2900
SRLW300/1000 300/1000 225/640 500/1000/100

40/55-11

Electric, self friction / water Pneumatic 5 3200
SRLW500/1000 500/1000 375/640 430/860/100

55/75-15

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Faster broadband speeds are only a few kilobytes? Let’s take a quick look at the problem in these places

In the increasingly developed mobile Internet today, wireless networks have become the "lifeline" in people's work and life. However, sometimes the wireless at home is also very powerless. Obviously, 100 megabit fiber broadband has been installed. Why do you watch video and brush? The webpage is still very card, it does not matter if it affects entertainment, but delaying work is a big deal. So today we will talk about why the wireless at home will slow down.

One, wireless channel congestion
If most of the residents have wireless routers installed in their homes, the wireless network environment is very complex and often causes congestion in the channels. This can cause instability in the home and Caton, etc. If you encounter this situation, you may wish to change Try a channel with fewer access points because changing the channel can avoid interference caused by other devices. In fact, many routers on the market today have the ability to automatically select the best channel, but you can also manually select channels to increase wireless speed and stability.



The specific solution is to check the uغير مجاز مي باشدe of the WiFi channel in the local area through the channel viewer, and then select a relatively clear channel to use. There are many tools to view the router channels. For example, some routers can be viewed directly in the client. Users can view the congestion degree of each channel through the “WiFi” channel function, which facilitates switching to relatively idle channels, thereby enhancing wireless. signal. You can also use the more professional “wirelessmon” software to check the congestion of wireless channels, switch channels in time, and improve the wireless network at home.
Second, the router is too old
As with the mobile phones we use, routers also need to be replaced in a timely manner, otherwise the hardware can not keep up, and high broadband can not bring smooth Internet speed. The transmission protocol has the greatest impact on the router speed. The current WiFi standard has undergone five generations of standards through 802.11a/g/b/n/ac, of which 802.11n is the current mainstream application, and 802.11ac is the latest generation standard, which is the fifth generation standard.



With the increasing demand of multiple terminals for Internet access, mainstream 802.11n standard routers have begun to restrict users' Internet access requirements. Therefore, routers that support 802.11ac (worked in the 5GHz band) can make WiFi speeds faster, especially at home. With 100 megabit broadband users, routers that support the 802.11ac standard are more likely to take advantage of broadband and make the network faster. However, because the 5GHz wireless wall penetration capability will be relatively weak, so if you replace the home router, it is recommended that you buy a dual-band router.
Third, the placement is not reasonable
There is also a problem that will affect the wireless speed, and the impact of hardware than the larger, that is, the placement of the router, in fact, the placement of the router is still a lot of stress, because the wireless signal strength will follow the distance and Decline constantly, especially in the case of obstacles (solid walls), so when your bedroom or home Internet access is too far from the router, the speed may become slow and slow.



The solutions are nothing more than two, one is to replace the more powerful router through the wall, the other is to change the wireless signal strength through WiFi signal amplifier or power cat, and the author is currently using the latter method. To improve the speed, because the location of the router in the bedroom is too far away, for the improvement of network speed is still very obvious.



In addition to being placed in the most central position in the home, the installation of the router should also be avoided on the edge of the solid wall, which will have a great influence on the signal strength. Of course, it can not be placed on the edge of a metal object, because the metal material will absorb the wireless signal, so when installing a router at home, it should try to avoid being placed next to the metal security window or metal objects, but also away from home appliances, because household appliances The electromagnetic waves generated will also cause some interference to the transmission of the wireless network.
to sum up:
There are many reasons for the slowdown in wireless at home. The author lists only several situations that are actually quite common. Some of them actually require only a little attention, but others need to try it out. If you want to meet the good condition of your home wireless network next time, you may wish to try it.

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Residual current fire monitoring device common problems and solutions

1. Power system applied to ARCM products

Code Meaning of Ground Protection System Type

The first letter indicates the power system's relationship to the ground:

T—directly grounded;

I—All live parts are insulated from ground or grounded at one point.

The second letter indicates the grounded relationship of the device's exposed accessible conductors:

T—The exposed conductor is directly connected to the ground for electrical connection. This grounding point is not directly related to the grounding point of the power system.

The N-exposed accessible conductors are electrically connected directly to the ground of the power system through the protection wires.

If there are letters afterwards, these letters represent the combination of neutral and protective lines:

S-neutral and protection lines are separate;

C-neutral and protection lines are one.

2. Transformer selection and installation

3. Temperature sensor installation

The temperature sensor is a custom-made NTC thermistor. It provides a temperature monitoring reference of 0 to 120°C for the device and can be used to monitor the temperature of the cable or distribution box for temperature protection.

Its external dimensions are as follows (in mm):

Select the part where the wire is located close to the wiring of the connector, and try to select the part with the insulating material. This will not only detect the temperature faster, but also ensure the electrical isolation. The black circle below is a more reasonable position.

Bind considerations:

• Try not to make electrical contact with the power supply system at the sensor mounting holes

• Try not to force the sensor's leads when tightening the second half so that the leads are not mechanically damaged.

4. Power on the alarm

Temperature alarm:

1) Is it normal alarm;

2) Remove the temperature sensor and see if the meter display is normal;

3) Check whether the temperature sensor is connected;

4) Check if the temperature sensor is damaged;

Leakage alarm processing method

Leakage finding method

1) Turn off the alarm function (set according to the product specification);

2) determine the size of the leakage current;

Constant reset of the instrument: When the residual current transformer signal of the instrument is removed and the leakage value of the instrument is displayed as 0, the current loop leakage current measurement value may exceed a dozen amperes. (The instrument can no longer operate normally)

The meter display value exceeds 3000mA: The current loop leakage current measurement is about 3A~10A. (The measuring range of the meter itself has been exceeded)

Other display instruments work properly.

3) determine the location of the leakage;

Use the clamp meter to measure each branch of the current circuit separately to see the location of the leakage value.

In the absence of a clamp meter, if the site allows power off. After each branch is powered off one by one, check the meter display value.

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Car networking is dominant in industrial applications

1 Introduction

Since the global economic crisis in 2008, the emerging industries represented by the Internet of Things have once again become the focus of attention of countries in the post-crisis era. The technological innovation brought about by the development of the Internet of Things has become the strategic commanding height of industrial development and national competition. In recent years, China has increased its emphasis on the Internet of Things and other emerging industries and its development from national leaders to relevant ministries and agencies and corporate institutions. The country’s emphasis on the Internet of Things will certainly lead to the flourishing development of new technologies and industries.

Car networking is one of the most promising applications for the Internet of Things. Due to its economies of scale and leading role in the industry, car networking is becoming the first choice for Internet of Things demonstration applications. Car networking applications can effectively alleviate urban traffic congestion, reduce vehicle exhaust pollution, reduce vehicle safety hazards, optimize car owners' driving routes, shorten travel time, and make trips more predictable. In China, the series of problems brought about by the rapid growth of motor vehicles urgently require the rapid development of car networking. At the same time, the social and economic benefits brought by the Internet of Vehicles will play an important role in the process of China's economic transformation and the cultivation of new industries. It is an important direction for the future development of China's Internet of Things.

China's car network has just started, and its development will be strung together with a long industrial chain, covering a number of industrial roles such as vehicle equipment manufacturers, telecommunications operators, business application providers. All parties in the industry chain have been working closely together and they have also started fierce competition, all of which are trying to seize the dominant power of China’s car networking applications. How to allocate resources and create complementary advantages is an important issue in ensuring the steady and orderly development of China's car networking applications. This article will focus on the concept of the car network, explain its development prospects, analyze the role of the car involved in the application of car networking and the current industry structure of China's car networking applications.

2 The development prospect of car networking is generally optimistic

Car networking is a specific application of the Internet of Things in the automotive field. It uses sensor devices and short-range communication modules mounted on vehicles to collect property information and static and dynamic information of cars and people, cars and cars, cars and roads, and uses them. Mobile communication networks, satellite communication networks, and navigation and intelligent information processing technologies and service platforms provide automotive users with richer services and services, as well as effective vehicle supervision and scheduling to achieve more efficient, safe, and comfortable vehicles. Management and user experience. Car networking uses “cars” as nodes and information sources to connect acquired information to business application platforms through wireless communication and other technologies to manage, analyze and dig deeper and provide integrated services including traffic management, user safety, and entertainment. Information system. Its core is information acquisition and feedback control, so as to realize the interconnection of "people-vehicle-road-environment". In summary, the key elements of the application of Vehicular Telematics include: service/content providers, business and information platforms, wireless communication technologies and networks, and vehicle and on-board modules.

As the preferred application of the Internet of Things, car networking has been popular since its inception. In China, the networking of cars has also attracted widespread attention from all walks of life. The state has clearly defined relevant policies to vigorously support the development of the Internet of Vehicles, and has spent huge amounts of money to invest in relevant research work on the Internet of Vehicles. The national “Twelfth Five-Year Plan” has made the Internet of Vehicles one of the ten key deployment areas of the Internet of Things. The car networking related projects have also been listed as an important project of China's major special projects, and the first phase of funding is expected to reach 10 billion. It is expected that the scale of controllable vehicles will reach 200 million by 2020. At the same time, the Ministry of Industry and Information Technology will also proceed from various aspects such as industrial planning and technical standards, increase support for on-board information services, and fully promote the comprehensive development of the networking industry.

As one of the "hands-on" business of the Internet of Things, all parties in the industry are actively promoting the comprehensive development of the application of the Internet of Things. The three major domestic telecom operators and major auto manufacturers are actively participating in and promoting the development of car networking applications, and provide strong technical and industrial support for the application of car networking. It has the basic conditions for the rapid development and commercial use of car networking applications.

The potential market for car-connected users is huge and the market size is promising. In 2010, China's annual production and sales of automobiles both exceeded 18 million, ranking the world’s largest automotive producer and the largest new car sales market. National Bureau of Statistics data show that at the end of 2010, the country’s total civilian vehicle ownership reached 90.86 million vehicles, an increase of 19.3% over the end of the previous year. Among them, the number of private cars was 65.39 million, an increase of 25.3%, and the number of civilian cars was 40.29 million, an increase of 28.4%. These figures show that the car networking application target customer group is huge, the growth rate is fast, and there is a very considerable potential market space. At the same time, CCID Consulting's research data shows that the scale of China's automotive electronics market is expected to reach 240 billion yuan in 2011, and car networking equipment is one of its important development directions.

3 Vehicle Connectivity Industry Diversified

At present, the government and relevant authorities (such as the transportation department, the national informationization department, etc.) mainly guide, support, and coordinate the development of China's car networking applications at the macro-industry level. In addition to state leaders' explicit instructions on the development of the Internet of Things on several occasions in public, the government has introduced a number of related policies to provide a good environment for the development of IoT applications and to raise the development of the Internet of Things to the height of national strategies. These have led the development direction of the car network directly or indirectly.

Specifically, the government mainly guides and supports the development of the Internet of Vehicles from the following three aspects: First, it improves the planning of the vehicle networking industry, determines its overall development ideas, and constructs an overall framework for the participation of all parties involved in the development of the Internet of Vehicles. Zhang Kexun; Second, support the car networking industry in finance, credit, and other aspects, and vigorously cultivate the market's demand for car networking applications. Third, develop and improve the relevant regulations and standards system of car networking as soon as possible, so that car networking becomes an open , secure, and trusted collaboration platform.

The core of the specific application of car networking is the provider of car information service platform. All parties in the industry chain, including automobile manufacturers and telecom operators, are striving to dominate the application of car networking, which is to become a provider of vehicle information service platform. In general, in addition to the guidance of the government's competent departments in the application of car networking, there are three main forces in the main link in the industry chain.

3.1 Automobile Manufacturers as Leading Forces

This situation is divided into the following two modes: one mode is the establishment of an automotive information service platform provider by a car manufacturer, and the other is a joint venture between a car manufacturer and a telecom operator to establish an automotive information service platform provider such as Mercedes-Benz and Germany. Telecommunication cooperation projects. Among them, the joint venture model is a powerful combination of automobile manufacturers and telecom operators in the vehicle manufacturing, customer management, network operations and other advantages. However, due to the fact that the joint venture model is mostly concentrated in the front loading market, the branding of auto manufacturers is deeper, so it is actually dominated by car manufacturers.

In foreign markets, an industry pattern dominated by automakers has taken shape, and the number of car networking business users has begun to take shape. Foreign automakers, such as General Motors, Ford, Toyota, BMW and Mercedes-Benz, have gradually expanded their sales of automotive consumer electronics products into entertainment, navigation and access platforms for satellite, wireless communication, and on-vehicle information services. , driver service business car networking application provider. At this time, the role of automakers is similar to that of Apple, and the launch and implementation of the telematics business must go through the telematics service platform provided by automakers. This is very similar to the vertical relationship between Apple terminals, application stores, and application developers.

3.2 Telecom operators as dominant forces

In this case, operators directly play the role of provider of in-vehicle information service platform, such as SK Telecom in Korea. This model is not affected by the brand of the car. The on-board information service terminal can be detached and can be used in the aftermarket. The disadvantage is that many in-vehicle information service terminals cannot be connected to the automotive electronic system and their functions are limited.

3.3 Third-party independent operation

In the case of industry-oriented applications, the industry's competent authorities can lead and coordinate and balance the various resources owned by operators and car manufacturers, and rely on third parties to provide on-board information service platforms. When facing the majority of public car users, there may be a third-party company leading the use of the resources of telecommunications operators and car manufacturers to independently play the role of provider of car information service platform. In this case, telecom operators mainly act as conduits. Due to the lack of support from two major industry players, car manufacturers and telecom operators, this model is relatively rare. Unless third-party telematics service providers can "kidnap" operators to Tencent, who can develop large-scale loyal users, its development path is hard to see.

4 China's car networking industry leading forces game

The nature of the car networking industry determines that car manufacturers and telecom operators are the biggest driving force of the entire industry. Since 2009, Chinese auto makers and telecom operators have been extremely active in the field of car networking. The competition between them has become increasingly intense, and both are trying to occupy the dominant position in the application of car networking. In general, both sides have their own characteristics and advantages, and cooperation and competition coexist. At the same time, the role of the traffic control department cannot be ignored.

4.1 Traffic Control Department: Occupying a dominant position in the development of industrial applications

Macroscopically, the traffic control department controls the development trend of China's car networking applications, allocates resources for all parties involved in the construction of car networking, organizes research and promulgates corresponding policies and regulations and standards to ensure the steady and orderly development of China's car networking industry in the overall situation. In detail, the traffic control department holds first-hand data information related to vehicles, owners, road conditions, etc., and can provide vehicle-mounted information service platforms with data analysis to realize functions such as traffic management, entertainment services, and safe driving.

4.2 Automobile Manufacturers: Occupying a Leading Position in the Integration of Car Connectivity Applications and Vehicles

China's auto manufacturers, such as Shanghai General Motors, Shanghai FAW, Chang'an, and Geely, are actively collaborating with operators to deploy relevant applications for the Internet of Vehicles. The advantage of automobile manufacturers lies in mastering the vehicle's own information collection and vehicle terminal resources. Some multinational companies, such as Toyota, Mercedes-Benz and other companies have directly transplanted the successful experience of foreign automakers, joint telecom operators to carry out car networking applications, so some auto manufacturers dominate the cooperation with operators.

4.3 Telecom Operators: Grasp the advantages of network and service operations, and provide service-oriented user services with advantages

In the field of internet of things in our country, the "government set up and operators to sing opera" is the current dominant development model. Telecom operators are undoubtedly the dominant players. Car networking is a specific application of the Internet of Things, and the first condition for an automobile to have information service capability is to use the communication channel of the telecommunication operator, so the operator will not easily give up its dominance. The number of telecom operators in China is far less than the number of Chinese automakers, so the competition between the three major operators to chase the major automakers broke out in 2010, especially the competition between China Telecom and China Unicom.

(1) China Telecom

In March 2009, Toyota took the lead in introducing the GBook to China, adopting China Telecom's CDMA network, and assembling it into the Lexus full range, Camry and Crown. Toyota outsourced its services to Beijing 95190, making it the second largest vehicle-mounted front-loading TSP in China. Following Toyota, Shanghai Tong used to provide OnStar services to Cadillac owners in December 2009 and quickly covered the Buick and Chevrolet brands. Shanghai GM's self-built Telematics Service Provider (TSP) and Call Center have become the largest in-vehicle pre-installation TSP in China.

Since both GBook and OnStar use CDMA-based hardware communication modules in their home markets, they continue to use the CDMA communication network after entering the Chinese market, which makes China Telecom have a first-mover advantage in the car networking application market and occupies the front loading market. A large share.

(2) China Unicom

China Unicom is preparing to apply 3G technology to the field of car networking and make the car a new 3G terminal. The goal is to reach around 30 million vehicles by the year 2015, with the overall scale of China Unicom's smart cars. At present, China Unicom is working with auto manufacturers, IT vendors, and telematics service providers to jointly explore the market. In the automotive aftermarket, China Unicom and car communication systems and service providers car audio network, Cascade and other cooperation. Car Voice Network and China Unicom jointly launched the Smart Assisted Driving System Cae-VP and sold it through car repair chain stores. In the automobile pre-installation market, China Unicom has signed all-round strategic cooperation agreements with FAW, BYD, Changan, Geely, Mercedes-Benz and other seven units, and will jointly launch new vehicles with in-vehicle communication systems. The output of these seven manufacturers accounted for 71% of the total automobile production in China, and the potential customer base is huge. In the first half of 2010, SAIC and China Unicom launched the first pre-installed Telematics service based on 3G network, Inkanet, which is currently installed on the Roewe 350 and can achieve information retrieval, stock trading, real-time traffic navigation, and community exchange. . At the same time, China Unicom has also made every effort to promote the standardization of the technology related to the networking of cars to better enter the market of car networking.

(3) China Mobile

In October 2006, China Mobile’s commercial trial service started the development of China Mobile in the field of car networking. In March 2009, China Mobile built its location service base in Liaoning Mobile, and currently has exceeded 150,000 users. In June 2011, China Mobile and Nokia Siemens Networks Co., Ltd. and Yutong Bus jointly announced the “Anjietong” intelligent operation system for Yutong Bus Interconnected Products. Among them, China Mobile provides network, platform storage and other related follow-up services for Anjietong. This shows that China Mobile is advancing into the commercial vehicle networking market. Subsequently, China Mobile and China FAW signed a strategic cooperation agreement, which will jointly build China's automotive networking products and service base and wireless digital urban product and service base.

China's telecom operators have rich experience in service platform construction, management, and operation, as well as rich service provider (SP) management experience. It can provide a good technology, management and operation platform for the deployment and popularization of car networking applications. In the case of small-scale domestic auto brands, weak development platform and service capacity, telecom operators are likely to become the unified service platform providers for China's telematics applications.

5 Conclusion

The development prospects of this new industry of the Internet of Cars are certainly desirable. It will completely subvert the concept of traditional cars and transportation, and change people's travel modes and habits. However, the rapid and normal development of China's automobile networking industry needs the cooperation of many forces, and it needs the cooperation of all industries. It needs the attention of the government and gives support and guidance in the policy. It needs the long-term vision and open mind of the automobile manufacturers to do a good job in product development. And market planning; requires the participation of telecom operators and other information technology service companies to establish a solid information infrastructure and prepare for the collection, transmission, and processing of information. We must plan and rationally allocate the resources we already have and fully promote the development of the Internet of Vehicles industry in China.

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March 7 Shijiazhuang Steel Market Price Quotes

Product Name Specification Material Steel Factory/Origin Price (Yuan/Ton) Yesterday Last Week Compared to Last Month General Line Φ6.5/8mm Q235 Handan Steel 4980 0 60 660 High Line Φ6.5/8mm Q235 Handan Steel 5080 0 180 650 High Line Φ6.5/8mm Q235 Shougang 5080 0 180 650 High Line Φ6.5/8mm Q235 Xing Steel 5080 0 180 650 Rebar Φ12mm HRB335 Handan Steel 5330 0 180 710 Rebar Φ12mm HRB335 Emerging Cast Pipe 5330 0 280 710 Rebar Φ14mm HRB335 Handan Steel 5280 0 180 710 Rebar Φ16-25mm HRB335 Handan Steel 5130 0 230 710 Rebar Φ16-25mm HRB335 Emerging Cast Pipe 5130 0 300 710 Rebar Φ16-25mm HRB335 Dedicated 4900 0 80 590 Rebar Φ12mm HRB400 Chenggang 5300 0 100 550 Rebar Φ16-25mm HRB400 Steel 5050 0 100 500 Rebar Φ16-25mm HRB400 Dedicated 5000 0 80 580 Hot Roll Coil 2.0*1500*c Q235 Handan Steel 5600 -50 50 600 Hot Roll Coil 2.75*1500 *c Q235 TISCO 5500 -50 50 650 Hot Roll Coil 3.0*1500*c Q235 TISCO 5400 -50 50 600 Hot Roll Coil 3.0*1500*c Q235 Tang Steel 5350 -50 50 600 Hot Roll Coil 4.75* 1500*c Q235 Tang Steel 5250 -50 50 600 Hot Roll Coil 9.5*1250*c Q235 Tang Steel 5250 -50 50 600 Cold Roll Coil 1.0*1000*2000 SPCC Steel 6850 0 100 950 Cold rolled coil 2.0*1000*2000 SPCC Angang 6850 0 100 950 Cold rolled coil 3.0*1000*2000 SPCC Angang 6900 0 100 850 Cold rolled coil 1.0*1000*2000 SPCC Benxi Steel 6800 0 100 950 Cold Rolled Coil 1.0*1000*2000 SPCC Benxi Steel 6800 0 100 950 Puzhong Plate 8mm Q235 Handan Steel/Taigang 6550 0 170 870 Puzhong Plate 10mm Q235 Handan Steel 6350 0 170 920 Medium Plate 12mm Q235 Handan Steel 6050 0 170 840 Puzhong Board 16-20mm Q235 Tiangang 5880 0 180 850 Puzhong Board 14-20mm Q235 Handan Steel 6000 0 170 870 Puzhong Board 14-25mm Q235 Wenfeng 5930 0 210 950 Puzhong Board 14-25mm Q235 Pu Yang 5950 0 170 970 Puzhong board 16-25mm Q235 Jingye 5930 0 210 950 Puzhong board 16-28mm Q235 Jingye 5930 0 210 950 Low alloy board 8mm Q345 Handan steel 6750 0 170 1040 Low alloy board 14-25mm Q345 Handan steel 6150 0 170 870 Welded pipe 1 inch Q235 Jinghua 4800 0 0 250 Welded pipe 4 inch Q235 Jinghua 4800 0 0 250 Welded pipe 6 inch Q235 Jinghua 4850 0 0 200 I-beam 25# Q235 Laiwu Steel 5150 0 300 750 I-beam 32# Q235 Baotou Steel 5400 0 200 700 Channel Steel 16# Q235 Jiangtian 5200 0 150 730 Channel Steel 32# Q235 Jiangtian 4930 0 100 700 Angle Steel 5# Q235 Shougang 5200 0 50 800 Angle Steel 10# Q235 Tang Steel 5200 0 50 670

 

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