Tunnel RFID common antenna temperature acquisition scheme

The RFID common antenna temperature acquisition solution for leaky cables used in railway tunnel power transmission innovatively applies embedded RFID technology, realizes the design of RFID and leaky cable microwave common antenna, and completes the design of high-strength signal radiation leaky cables.

By embedding the temperature sensor into passive high-frequency RFID, combined with the RFID tag activation power requirements, optimizing the design of the leakage cable signal radiation intensity and the leakage antenna design of the microstrip line structure, the leaky cable antenna for temperature sensing and collection is realized, and the leakage cable length direction is realized. Continuously set up multiple RFID tags to realize temperature sensing and collection solutions.

The solution integrates a variety of wireless sensor networks. For different temperature measurement points, the three-dimensional comprehensive temperature measurement monitoring of point, line and surface is adopted. The temperature measurement leaky cable antenna is attached to other cables and laid along the cable groove. It is used for temperature measurement and monitoring of temperature-sensitive parts of power supply cables in tunnels and subway trains, and realizes real-time over-temperature safety warning and alarm.

Its advantages not only have the advantages of small footprint, low cost, long life and anti-interference, but also improve the accuracy and reliability of temperature sensing. Due to the use of RFID technology, daily maintenance is more convenient.

This solution solves some problems for railway tunnels and subway industry fields.

First, the application of RFID improves the accuracy and reliability of temperature sensing.

Second, through a larger length of continuous temperature measurement, the number of data collection is expanded.

Third, compared with the traditional distributed temperature acquisition scheme, it has the advantages of small footprint, low cost, long life and anti-interference.

Fourth, the design of the use frequency and coupling loss of the leaky cable.