I. Overview This article refers to the address: http:// In China last year, more than 18,000 children under the age of 14 died in road traffic accidents. In recent years, school bus traffic safety accidents have become the most important killer among accidents in primary and secondary school safety accidents. The main reasons are four hidden dangers: the quality of school buses is not up to standard, the driver's safety awareness is weak, the overload phenomenon is serious, and the multi-head management is not responsible. A large part of the factors involve regulatory issues, and drivers, follow-up teachers, and student activities in the car lack effective supervision and monitoring by relevant departments. It is not enough to rely on police force assault inspection. As a long-term supervision problem, school bus transportation urgently needs to use technical facilities to effectively monitor its safe operation, and it can be used as a basis for judgment in the event of an accident. China's first small school vehicle safety national standard "Safety Technical Conditions for Special Primary School School Bus" will be officially implemented on July 1, 2010. The special primary school bus must be equipped with a vehicle driving recorder GPS, commonly known as "black box". However, one of the major drawbacks of school bus GPS monitoring is that it is impossible to monitor the situation in the car in real time and solve the problem at any time. Second, the system architecture XW-H3000-DVR-3G is a vehicle-mounted terminal developed by Xingwei Technology's brand 666GPS. The system is based on 3G wireless high-speed transmission technology (Digital Video Record), combined with GPS positioning monitoring, car driving record, driver identification, abnormal alarm and other functions. Real-time monitoring of high-definition video in all weather, effectively solving the lag defects of school bus monitoring, and it adopts modern technologies such as digital video compression storage and RFID card, which is more humanized and intelligent. As shown in the figure, the system consists of a server system, a fixed external network server, 3G wireless communication/Internet, global satellite positioning system (GPS), vehicle terminal equipment, and a monitoring center. The six parts of the system constitute a 24-hour monitoring school bus transportation vehicle supervision platform. The server system is mainly used for data storage, conversion, recall and transmission, because the vehicle terminal device itself does not have a large amount of functions for storing data, and can only be saved by the server. The fixed IP external network server has a fixed IP address, so that the server that actively searches for the address after the GPS terminal goes online performs two-way data communication, so that the GPS device terminal communicates with the server in real time. 3G wireless communication / Internet connection equipment and various servers / background. GPS, data location tracking. The vehicle terminal equipment is installed in the school bus, with a camera or a camera, and the real-time and all-round recording operation state inside and outside the vehicle. The background of the monitoring center is convenient for the school management or relevant departments to monitor, manage, schedule, track, etc. the vehicle driving process. In fact, it is a check-in platform. Third, 3G transmission, intelligent monitoring in the application of school bus management The GPS module, GSM module and CPU in the vehicle terminal have been rigorously tested and conformed to the Ministry of Transport's Ministry of Standards. Its stability is resistant to electronic clutter, and the operating temperature range of -20°C to +60°C is applicable to the whole country. Kindergartens, primary and secondary schools in different regions. The XW-H3000-DVR-3G has made some special improvements to the hidden dangers of school bus accidents such as school bus overload and driver violations, so that it can achieve better monitoring purposes. 1, 3G real-time video / image transmission The biggest advantage of 3G transmission is that real-time monitoring is realized. When the school finds an abnormality, it reminds or supervises the driver. The 3G network card is used to strengthen the network bandwidth and the dual stream transmission is faster. Large-capacity dual SD card stores images, powerful error correction function, and is suitable for the security of video and data files in the car environment. The clear fluency of the video, using H.264 video compression technology, image resolution is D1, Half, D1 or CIF optional. The picture transmission uploads the captured picture through GPRS or CDMA, and the transmission rate is 42.8Kbps. Secondly, the system's own multimedia driving record analysis software can also realize 4-way image synchronous playback, conditional playback, clip storage, character overlay, geographic information and driving record overlay, event analysis and record extraction. 2, abnormal intelligent alarm Set up a complete anti-theft alarm system for anti-theft alarm, emergency alarm, fatigue driving alarm, over-speed alarm, etc., which is convenient for the school to carry out automatic management. The alarm system is divided into two categories: driver active alarm and driver passive alarm. For example, the emergency alarm is when the driver encounters equipment failure or safety accident, and actively presses a button alarm button connected with the vehicle terminal or installs the monitoring center software. The mobile phone sends an alarm, and the alarm information is reminded by the school monitoring center through the platform/message/email to respond immediately. For example, if the equipment is connected to the relevant regulatory department, it is monitored to be overloaded or abnormal in the vehicle. The school or the driver is ordered to stop the treatment. The power supply and power-off command can be issued to the target vehicle through the monitoring center (with the oil-off relay). After receiving the command, the fuel cut-off relay is started to cut off the vehicle's oil and gas supply. Remote power cutoff 3. Driver identification The technology is suitable for the shift of the driver. Each vehicle terminal is equipped with an ID card reader. Each driver corresponds to an ID card. The ID card is sensed by the card reader before driving, and the vehicle is successfully read after the ID card data is read. In order to start the ignition. All information about the driver's driving process, including parking, speeding, and fatigue driving, will be recorded, so that the school monitoring center can understand the driver's driving situation and strengthen the management and performance evaluation of the driver. In addition to the above three improved functional modules, the system also has conventional functions such as location tracking, signal detection services, electronic maps, voice and call, and mileage statistics for monitoring school buses. Fourth, the performance definition V. Conclusion The school bus intelligent monitoring system provides a feasible solution for school bus management to prevent accidents. The monitoring based on 3G real-time transmission video has great applicability, and its intelligent automatic function design is convenient for school management. It is believed that with the subsidy of the national policy, the system will be further optimized. The 3G remote video surveillance system will greatly promote the school bus management and ensure the safety of students on the way to and from school, and become an indispensable part of the centralized management of the school.
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September 13, 2019