Railway monitoring information collection system and method based on backscattering technology

Abstract

The invention relates to a railway monitoring information collection system and method based on backscattering technology. The railway monitoring information collection system comprises monitoring sensors, backscattering nodes and a central node, wherein the central node is carried on a mobile inspection carrier, one backscattering node is at least connected with one monitoring sensor, the centralnode is used for sending excitation signals; the backscattering nodes are used for receiving the excitation signals, collecting energy to supply power to the backscattering nodes, reading instructioninformation from the received excitation signals, reading sensor data according to the corresponding instruction information and transmitting the sensor data to the central node; and the central nodeis used for receiving and storing sensor data. According to the railway monitoring information collection system and the method, data transmission is realized under a passive or low-power-consumptioncondition, the transmission distance is prolonged, the transmission cost is reduced, the mobile inspection carrier is adopted for inspection, a fixed wired or wireless transmission channel does not need to be established for sensor data collection, and the construction and use cost of wireless or wired transmission equipment and channels can be reduced.

Description

technical field [0001] The invention belongs to the technical field of railway internet of things information, and in particular relates to a railway monitoring information collection system and method based on backscattering technology. Background technique [0002] The operation and safety of railways are highly concerned. Installing sensors along railways to monitor the operation status of railway infrastructure is an important means to improve the efficiency of detection, maintenance and transportation, prevent accidents and reduce failures, and ensure the safety of railway transportation. In a typical low-density railway scenario, it is difficult to supply electricity between intervals, the cost is high, and the channel construction and use of fixed wired and wireless transmission channels for monitoring information collection are relatively high. These have become obstacles restricting the development of railway infrastructure safety monitoring. The use of passive or l...

AI Technical Summary

Problems solved by technology

In a typical low-density railway scenario, power supply between sections is difficult and costly, and fixed wired and wireless transmission channels are used to collect monitoring information. The channel construction and use costs are relatively high. These have become obstacles restricting the development of railway infrastructure safety monitoring.

The use of passive or low-power monitoring and transmission technology has become an important development direction, such as RFID, but the main problems of RFID technology are: short communication distance, only within 10m, low communication rate, difficult to meet the transmission of information such as monitoring information communication requirements

[0003] At present, there are also some passive sensors, which have problems such as short reading distance and inability to process multiple wireless sensor tags at the same time, resulting in limited application

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