Rail transit vehicle cable temperature monitoring front end and system based on passive RFID temperature measurement electronic tag

Abstract

The invention relates to a rail transit vehicle cable temperature monitoring front end and system based on a passive RFID temperature measurement electronic tag. The temperature monitoring front end comprises the RFID temperature measurement electronic tag and a planar antenna. The planar antenna is used for charging the RFID temperature measurement electronic tag in a wireless electromagnetic wave radiation mode; and the planar antenna communicates with the RFID temperature measurement electronic tag through a wireless electromagnetic wave signal, and obtains a temperature measurement sensingsignal of the RFID temperature measurement electronic tag. The monitoring system comprises the temperature measurement front end and further comprises a lower computer and an upper computer. The lower computer serves as a reader-writer and is used for collecting the temperature sensing signal read by the planar antenna to obtain temperature information; and the upper computer is used for acquiring the temperature information and then carrying out temperature display and monitoring alarm. A wireless passive radio frequency identification temperature sensor is installed on a vehicle-mounted high-power cable, a wired or wireless monitoring network is established, and real-time monitoring and high-temperature alarming of the temperature of the key cable of the whole vehicle are completed.

Description

technical field [0001] The invention relates to a cable temperature monitoring front end and system of rail transit vehicles based on passive RFID temperature measuring electronic tags. Background technique [0002] The existing rail transit vehicle cable temperature monitoring solutions are mainly divided into two categories. One is to use paper over-temperature discoloration labels, such as figure 1 As shown, the over-temperature threshold of the commonly used paper over-temperature color-changing label is 70 degrees Celsius. When in use, the paper over-temperature color-changing label is pasted on the monitored cable 1. Before the over-temperature situation occurs, the identification position of the paper over-temperature color-changing label is White 3, when the temperature of the cable exceeds 70 degrees Celsius, the paper over-temperature color-changing label will change color, such as black 4, to inform the inspection personnel that the cable over-temperature state h...

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that the magnetic induction coil temperature sensor generates electric energy to power the temperature sensor through electromagnetic coupling, so only when the current of the monitored cable is higher than a certain value, the magnetic induction coil temperature sensor can obtain enough power to start working, otherwise The induction coil cannot be powered, so the temperature sensor cannot measure the temperature without electricity, so the scope of application of this solution is limited

The shortcomings of the above two methods further limit the intelligent level and application range of the cable temperature monitoring system

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