On-vehicle device includes the BDS receiving module
and the wireless communication with a controller module.
Receiving module receives the data provided by the BDS, and
then sends the information to the wireless communication
module which embedded a controller through the serial port.
The controller controls the wireless module to transmit the
information to the processing and displaying module in the
regulatory control center through GPRS (General Packet
Radio Service). This module uses the PC (personal
computer), its main function is shown in Figure 2. The PC
stores the information and displays the data in the form of a
dialog box by software programming. Staff in the monitoring
center can obtain the intuitive information of the current
moving vehicle, such as number, position and speed