Rail Transit Trackside Wireless Transmission Device

Abstract

The invention discloses a wireless transmission device beside a traffic track. The wireless transmission device beside the traffic track comprises a main control unit, a wireless broadband transmission unit, a ZIGBEE network unit, a giant magneto resistive (GMR) sensing unit, a clock unit and a power supply unit. The wireless transmission device beside the traffic track performs wireless local area network (WLAN) wireless signal coverage along the track, enables a sensing device of a ZIGBEE network to be connected in, simultaneously can utilize a giant magnetic sensor to achieve detection of a train regional position and train speed, thereby being capable of achieving fusion of transmission, monitoring and application along the track and integration, reducing infrastructure cost of a rail production organization, improving operation management and government management command and control level of an operation department, meeting application requirements on bus service and the like of the public, and having a wide application prospect.

Description

technical field [0001] The invention relates to a vehicle-ground wireless communication system in a rail transit transmission system, in particular to a rail transit trackside wireless transmission device. Background technique [0002] A large number of urban rail transit infrastructures such as subways and light rails have been built and put into use. The dense flow of people moves in a small semi-enclosed space, which poses a huge challenge to the safe operation of rail transit. The urban rail transit transmission system is an important means for commanding train operation, official liaison and providing information services. The train-to-ground wireless broadband communication network serves as a high-speed data transmission network covering all stations, intervals and depots, providing video services between subway trains and the ground. , data, voice and other information transmission channels, effectively ensuring the safe, fast and efficient operation of trains. [0...

AI Technical Summary

Problems solved by technology

[0006] The transportation production and organization of rail transit is a complex system with high reliability, and it is also a large-scale system with a very fine division of labor. There are various sensor and monitoring equipment construction needs for each professional system along the rail transit line. The limitation of the system construction is complicated and the cost is high

The function of the trackside transmission equipment in the existing train-to-ground wireless broadband communication system is mainly to establish a wireless broadband communication link, which is loosely connected with the disaster monitoring, equipment status, environmental monitoring, train operation status monitoring and other systems along the rail transit, and cannot form resource sharing , a unified and coordinated system, and the inability to fully integrate broadband service data and sensor monitoring data, resulting in a large waste of investment, communication bandwidth and energy

[0007] Compared with traditional monitoring methods, the sensor network based on trackside transmission equipment has obvious advantages in many aspects such as instrument installation, data measurement, status evaluation, and cost control. With the development of technology and application demonstration, sensor network technology has gradually Penetrating into urban life, the application of sensor network technology in rail transit is increasing; however, due to the single function of the trackside transmission equipment of the existing vehicle-ground wireless broadband communication system, it cannot be integrated with the sensor network, so the existing technology In the sensor network, another system needs to be built, that is, another system needs to be built to realize sensor networks such as disaster monitoring, equipment status, environmental monitoring, and train operation status monitoring.

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