The Internet of Things applies 3G technology to ensure public safety in Guangzhou
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The security of the Guangzhou Asian Games will be tested, and bus safety is undoubtedly a very important part. According to reports, now, some drivers in Guangzhou can send real-time images back to the rear management platform through bus surveillance video as long as they touch a button. Managers can even see what is happening in the car on their mobile phones, so they can control everything. The Guangzhou Municipal Commission of Transportation stated that the on-board video of all buses on the B1 line has been upgraded, and it is the first to integrate 3G technology.
3G monitoring system applied to Guangzhou public transportation
The good application of Guangzhou public transportation video will play a role in ensuring the safety of public transportation for the Asian Games. Xie Zhendong, director of the Science and Technology Department of the Municipal Commission of Communications, said that Guangzhou’s bus video upgrade mainly incorporates 3G transmission technology to realize wireless transmission and backup of surveillance video data. keep forever”.
When there is theft, robbery, fight, etc. on the bus, the bus driver can quietly press the alarm button on the left hand side, and the video picture on the bus is immediately transmitted to the video surveillance management center, and the management personnel can decide whether to call the police according to the specific situation. In addition, the real-time image can even be transmitted to the mobile phone with the relevant permissions, and the person in charge of the management department can make a judgment and respond immediately. If there is a public security or criminal case, the rear management center will link up with 110 to shorten the time for police dispatch.
According to reports, at present, all buses in Guangzhou have been installed with a bus video surveillance system, and the system equipment integrity rate has stabilized at more than 90%. The public security department has also successfully extracted bus surveillance video and detected a number of important cases. However, such a new system incorporating 3G technology is currently only operating on all B1 lines, with about 70 vehicles. Xie Zhendong said that the Municipal Transportation Commission will negotiate with relevant bus companies to promote this technology based on the experimental situation of the B1 line.
3G mobile video surveillance has high cost performance
The biggest advantage of 3G technology is to support high-speed information transmission. Using the existing 3G technology, it can provide services such as real-time video transmission, real-time positioning and scheduling, and information sharing for the public transport industry. Professor Dong Decun, deputy dean of the School of Transportation, Tongji University, said: “3G technology can help the public transportation system improve the level of informatization and intelligence, and then achieve the goal of low carbon, safety and efficiency.”
Buses are mobile, and the transmission of video signals must be wireless. Among the existing wireless transmission methods, most cities are not covered by WIFI mode, and the cost of satellite and microwave communication is too high. The introduction of 3G services can just solve the problem. Problems with bus monitoring network transmission. At present, China Telecom’s EVDO network, China Unicom’s WCDMA and China Mobile’s TD-SCDMA network have gradually covered various cities, and buses mainly shuttle in cities. 3G is currently the solution to mobile video surveillance with high cost performance.
The bus remote video monitoring system includes three parts: front-end acquisition, network transmission, and command center. The front-end acquisition equipment is the wireless video monitoring equipment installed on each bus. The network transmission system transmits the data collected by each front-end monitoring equipment to the monitoring command center through the wireless 3G network.
The Internet of Things is very useful in bus monitoring
The new video technology can also accurately count the passenger flow. Xie Zhendong said that in the past, the statistics of bus passenger flow depended on Yangchengtong card swiping device and coin box to determine the workload. The system can conduct real-time statistics on the number of people, how many people got off, and how many people are still in the car.
Using the vehicle automatic monitoring system based on 3G technology, the position of each vehicle can be transmitted to the control center in real time for monitoring and management by the dispatching room. Through the bus operation software system, operation scheduling, route planning, passenger service, etc. can be made more efficient and play a greater role. In particular, the intelligent dispatching management among them can improve the utilization rate of vehicles, passenger volume and passenger flow capacity along the route by optimizing the dispatching capacity resources, helping bus companies to reduce costs and improve efficiency, thereby indirectly improving urban production efficiency and productivity.
Combining public transport information with the existing Internet to provide public transport travel information services is also an important part of public transport informatization. Whether relying on computers indoors or using mobile phones, mobile information terminals and electronic stop signs outdoors, travelers can understand vehicle operation information in real time before or during travel, flexibly choose travel methods and routes, and improve travel efficiency.
3G makes urban public transport smarter. The combination of 3G video transmission and bus intelligent dispatching system is the development direction of bus intelligence. The Internet of Things is starting to show an increasingly important role in bus monitoring.
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