The small device installed on the vehicle is a part of the GPS on-board unit, which is used to receive the information transmitted by the satellite.
Wireless communication module
Generally, vehicle mounted radiotelephone, radio station or mobile data terminal (MDT) are used to complete the function of information interaction.
Alarm control module
Send alarm signals to the monitoring network to report abnormal vehicle information.
Voice control module
Complete the functions of sound control and service.
It is used to display video image information such as azimuth and road conditions. LCD, CRT or TV display can be selected.
On board pc
Integrate and process each function module, cooperate with corresponding software, and complete the specified functions, such as data processing, and calculate the longitude, latitude, altitude, speed and time of the location.
Because of the particularity of the application environment, it is necessary for the on-board PC as the core of the system to have small volume, high integration, low power consumption, strong processing ability and simple and fast operation. On board PCs use embedded operating systems, such as Windows CE and embedded Linux. According to the requirements of the frequency of vehicle use and the complexity of the road, it is necessary to have high reliability, good expansibility and compatibility
Article from: automobile navigator manufacturer http://www.patriotlibertynews.com/
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