The vehicle positioning terminal system includes: vehicle terminal, GPRS wireless communication network, server software, and client software. The vehicle terminal is composed of a host module, an antenna, and optional components. The basic part of the vehicle terminal is composed of a host module and an antenna, which can achieve basic functions such as real-time positioning, detection of longitude and latitude, time, direction, speed, etc. There is a data interface left on the host, which can be used to connect devices and sensors as needed, meeting the functional requirements of the attachments.

　　GPS/GPRS/CDMA car terminal products use the Internet as a carrier to achieve communication connection between the terminal and the center. Compared to GPS/GSM in car terminals, its excellent data transmission capability and outstanding query monitoring timeliness are fully reflected. By relying on network coverage and wide monitoring range, it is possible to achieve nationwide roaming monitoring with high speed, low error rate, and stable reliability.

　　In the design philosophy of the information side, scalability is also fully considered. The vehicle positioning terminal adopts a bus structure, with serial communication between master and slave machines, allowing for arbitrary expansion of the number of slave machines and convenient and flexible connection with various accessory interfaces.

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