The car positioning terminal mainly includes three parts: vehicle GPS monitoring terminal, communication network and dispatching monitoring center. Among them, the vehicle GPS monitoring terminal is also called GPS terminal and GPS monitoring terminal. Essence The communication network is a carrier that realizes the information exchange between the vehicle and the monitoring center. Generally, it refers to the GSM/GPRS/CDMA base station and the Internet. The scheduling and monitoring center is the core of the entire information system. It is responsible for the classification, records and reposts of the information exchange, various content, and control information of the vehicle GPS monitoring terminal.

　　Introduction to the composition of the car positioning terminal:

　　Car positioning terminal system includes: vehicle terminal, GPRS wireless communication network, server software and client software. The car terminal consists of the host module, antenna, and optional components. The basic part of the car terminal is composed of the host module and antenna. It can achieve basic functions such as real -time positioning, detection of latitude and longitude, time, direction, speed, etc. There is a data interface on the host, which can be connected to the device and sensor as needed to meet the functional requirements of the attachment.

　　The GPS/GPRS/CDMA vehicle terminal products use Internet as the carrier to realize the communication connection between the terminal and the center. Compared with the GPS/GSM vehicle terminal, its excellent data transmission capacity and excellent query monitoring are fully reflected. Relying on network coverage and extensive monitoring, it can achieve national roaming monitoring, high -speed, low -error rate, stable and reliable.

　　In the design ideas of the information side, the scalability has also been fully considered. The vehicle positioning terminal adopts the bus structure, and the main board of the main machine is communicated. It can expand the number of machines at will, which is convenient and flexibly connected to various attachment interfaces.

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