Vehicle monitoring system based on Beidou system and control method thereof

Abstract

The invention discloses a vehicle monitoring system based on Beidou system. The invention is characterized in that the system is composed of a Beidou ground monitoring centre, a Beidou navigating and locating satellite and a Beidou vehicle-mounted system, wherein the Beidou navigating and locating satellite is dependent on current satellite system built by Beidou network system. The Beidou vehicle-mounted system comprises a Beidou terminal and a train network. The train network is a current TCMS system, wherein the TCMS system comprises a vehicle dragging sub-system, a vehicle braking sub-system, a vehicle signal sub-system and a vehicle broadcasting sub-system. The TCMS system is communicated with a Beidou terminal via an RS232 interface to provide vehicle state information to the Beidou terminal on one hand, and to receive Beidou navigating and locating information, time service information and control instruction from the ground monitoring centre on the other hand so as to control the operation of the vehicle. The Beidou terminal is communicated with the locating satellite. The locating satellite is used for transmitting the locating information and vehicle state information to the ground monitoring centre. The centre is used for transmitting the information to all ground monitoring terminals so that the operated vehicle can be monitored and all operated vehicles can be monitored and controlled.

Description

Technical field [0001] The present invention relates to a transmission system through free space, in particular to a transmission system suitable for satellite links. Background technique [0002] At present, my country's rail transit industry has entered a period of rapid development, and some advanced high-tech products and control ideas such as networking, intelligence, and modularization have begun to be maturely applied in vehicles. With the continuous increase of rail vehicles, it has brought challenges to the operation and management of vehicles. How to realize real-time remote monitoring of vehicles in the vast geographical environment of our country, how to strengthen operation scheduling reasonably and efficiently, and how to accurately grasp each vehicle Our position has become an urgent problem we need to solve. However, the booming wireless network and navigation and positioning technology provide us with the possibility to solve these problems. [0003] When it come...

AI Technical Summary

Problems solved by technology

Since the GPS in the United States is a passive receiving system, users can only know their own location, but cannot notify the command department, that is, the location information of the vehicle cannot be obtained at the railway bureau or station

[0010] (2) GPRS uses packet switching technology, which determines that its delay is not fixed and cannot be used as a real-time system. Therefore, from the perspective of safety, it is impossible to transmit ground commands to vehicles in real time and reliably

[0011] (3) Since GPRS is developed on the existing GSM network, it cannot provide services for areas that cannot be covered by GSM and some signal blind areas

And the GSM network is greatly affected by the surrounding environment, so the transmission of positioning information and vehicle information through GPRS is unreliable

Images