Tunnel RFID common antenna temperature acquisition scheme

The temperature acquisition solution of leaky cable RFID common antenna for railway tunnel power transmission has innovatively applied the embedded RFID technology, realized the design of RFID and leaky cable microwave common antenna, and completed the design of high-intensity signal radiation leaky cable. It has been applied in tunnel high-speed railway in many provinces and cities.

By embedding the temperature sensor into passive high-frequency RFID, combined with the RFID tag activation power requirements, optimize the leaky cable signal radiation intensity design and the microstrip structure leaky cable antenna design, realize the leaky cable antenna for temperature sensing and acquisition, and continuously set multiple RFID tags in the length direction of the leaky cable to realize the temperature sensing and acquisition solution.

The scheme integrates a variety of wireless sensor networks into one. For different temperature measurement points, the three-dimensional comprehensive temperature measurement monitoring of point, line and surface is adopted. Through the temperature measurement leaky cable antenna and other cables, it is laid along the cable trough. It is used for the temperature measurement monitoring of the temperature sensitive parts of the power supply cables of tunnels and metro trains to realize real-time over temperature safety early warning.

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

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

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

Second, expand the number of data acquisition through a large length of continuous temperature measurement.

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

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