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December 23, 2022
In recent years, with the popularization of automobiles and the construction of roads, inter-city economic transactions have become more frequent, and the area of activity has also become larger and larger, which has caused serious problems such as heavy traffic, increased car accidents, and increased exhaust emissions. The emergence of Intelligent Transport System (Intelligent Transport System) has effectively improved the above various transportation problems. Vehicle Monitoring System is a branch of intelligent transportation system. It integrates advanced wireless positioning technology, geographic information system and modern mobile communication technology. It not only plays a major role in intelligent transportation system, but also provides anti-theft and anti-robbery alarm, emergency Medical help, entertainment and other services. All these have prompted various R & D institutions to vigorously develop vehicle monitoring systems. In this paper, the vehicle-mounted terminal modules in the entire system are selected for design and implementation.
1 Overall structure of vehicle monitoring system
The entire system consists of GPS satellites, vehicle-mounted terminals, communication networks (GPRS and Internet) and monitoring centers. During the operation of the vehicle, the GPS receiver of the vehicle terminal receives positioning data, calculates the current longitude, latitude, speed, course and other information (time, status) of the vehicle, etc., and then transmits it to the monitoring with a static IP address through the GPRS network Center, and co-existence of people center database. After receiving the information uploaded by the vehicle, the monitoring center scientifically dispatches and manages according to the current status of the vehicle, thereby improving the operation efficiency. Customers can also query the current status of a specific vehicle via the Internet or phone. The overall structure of the system is shown in Figure 1.
2 Functions of car terminal
The satellite receiving module of the vehicle-mounted GPS / GPRS terminal collects GPS satellite data, and obtains the geographic coordinate information of the vehicle through data processing. After the information is processed by the vehicle-mounted terminal, it is sent to the GPRS wireless communication network by the GPRS wireless communication module. The GPRS network establishes a data channel supporting TCP / IP between the vehicle-mounted terminal and the monitoring center connected to the Internet according to the corresponding protocol. The vehicle GPS / GPRS terminal relies on the data channel to exchange information with the monitoring center. The monitoring center can also send control commands and service information down through this channel. In addition, in addition to vehicle positioning, the system can also provide a variety of services such as anti-theft and anti-robbing, fuel and power cutoff for mobile vehicles, display of scheduling information, medical assistance, mobile phones and other services.
3 Car terminal hardware design
The vehicle terminal hardware system is based on the single-chip computer and GPS + GPRS module, which belongs to the economical functional terminal. Its structure is shown in Figure 2.
The above is the Design and Implementation of GPS / GPRS Vehicle Monitoring Terminal we have listed for you. You can submit the following form to obtain more industry information we provide for you.
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Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.