[Vehicle Positioning Monitoring System] How is the vehicle positioning monitoring system composed of the vehicle positioning monitoring system
How about the vehicle positioning monitoring system
Through the on-board GPS
monitoring and positioning system, passenger transport companies and relevant regulatory authorities can more intuitively monitor vehicle overloading, in-vehicle security, Provide clear video data for fatigue driving, accidental traffic accident determination, etc., to facilitate all parties to monitor the entire process of driving safety, help traffic authorities investigate and deal with various illegal operations, and ensure safe and orderly traffic operations.
Vehicle positioning monitoring system composition
1. Monitoring front-end:
That is to install video surveillance and satellite positioning and navigation equipment on each operating vehicle, mainly including in-vehicle camera and vehicle-mounted monitoring host. .
In-vehicle camera: According to the structural characteristics of long-distance passenger vehicles, four cameras are generally installed on the vehicle, the main positions are the front road condition area, the driver’s driving area, the upper door area, the lower The door area or the passage area in the car can cover the entire compartment including the driver and the driving road environment. The camera used is an infrared dome camera, which does not affect the overall appearance of the car, and can also achieve overall monitoring during the day and night. .
The vehicle monitoring host is the front-end core part of the entire vehicle 3G monitoring and positioning system. It mainly realizes the following functions: compression of video and audio signals and wireless network transmission, local monitoring and viewing of video and audio signals, The transmission of satellite positioning and navigation signals, the storage of video files, the function of dispatching information, the prompting of sub-sections, the analysis of faults, the resumption of transmission from breakpoints, the access of alarm equipment, etc.
Vehicle positioning monitoring system composition
Second, network transmission system:
The system transmits the data collected by each monitoring front-end equipment to the monitoring management center through the wireless network. Combined with the actual situation of long-distance passenger vehicles, wireless monitoring is the best choice for monitoring long-distance passenger vehicles. Due to the mobility of long-distance passenger vehicles, the transmission of video signals must be wireless. In the current wireless transmission methods, Wi-Fi coverage has not yet reached a large scale, and the cost of satellite and microwave communication is too high. Therefore, based on WCDMA, EVDO, The 3G wireless network of TD-SCDMA is the most suitable way at present.
First, WCDMA or EVDO basically covers major urban areas and inter-city roads, which better solves the problem of blind spots; The network is ready-made, no secondary construction is required, and the investment cost is the lowest; in addition, after years of upgrading, the WCDMA or EVDO network can meet the transmission speed of several megabytes and has the ability to transmit real-time video signals.
Vehicle positioning monitoring system composition
Third, command and dispatch center:
It is a comprehensive information platform integrating computer network, communication network and intelligent management system. By establishing a vehicle monitoring and management system platform, the centralized management and control of front-end equipment and background monitoring can be realized. Infrastructure for scheduling and scientific management. The command and dispatch center is composed of a call center, an order-receiving seat, a dispatching seat, a GIS workstation, a complaint query platform, a squad leader seat, a database server, a switch, a router, a business network management monitoring platform, a leadership query station and UPS equipment. Record query, network transmission, hierarchical control, authorized access, resource sharing, etc., to achieve real-time monitoring and dispatching of monitoring areas, locations, and important targets. The vehicle-mounted GPS monitoring and positioning system is an all-digital type of digital access method. The front-end monitoring equipment encodes the analog signal into a digital signal through a digital encoding device, and connects to the control center through a wireless combined with a wired network. The digital signal connected to the control center is The management platform performs unified management, storage and display.
How to improve the stability ofGPSVehicle positioning monitoring system Sexuality
1. Subjective awareness must be improved
As can be seen from the previous discussion, no matter what the emphasis is on GPS vehicle positioning The reliability of monitoring is not excessive. It can be said that ‘stability is the most important thing’. The difficulties faced by the entire industry have proved that the GPS industry cannot develop without solving the problem of product stability.
It is necessary to establish the idea of ‘GPS vehicle positioning monitoring system is no problem’, and fully understand the difficulty of designing and manufacturing GPS vehicle system: it is different from home appliances, mobile phones, computers, and the market. Ruthless, luck is impossible.
2. Overall design
‘A good start is half the battle’, a basic principle in quality management is: quality is design produced, not produced. Improving product reliability should start from the design source.
3. Hardware aspects
The hardware design determines the upper limit of the functions that the vehicle system can provide, and also determines the cost of the final product. There are two main factors related to reliability in design: the selection of good solutions and good raw materials.
4. Software aspects
The most important part when we design the GPS vehicle positioning monitoring system is the GPS positioning platform, because this platform They are all designed with JAVA programs, and the main problem of JAVA programs is the problem of code security. This method is very easy to solve. We must use anti-decompilation technology when designing the gps positioning platform, and only read the USB KEY information. Correctly decrypted.