Wireless passive temperature measurement system

The utility model discloses a wireless passive temperature measurement system. The system comprises surface acoustic wave temperature sensors, collectors and a master control terminal. The surface acoustic wave temperature sensors are arranged at points, to be detected, in different chambers of a switch cabinet. The collectors are disposed in an instrument chamber of the switch cabinet. The master control terminal is mounted in a master control room of a transformer substation. The surface acoustic wave temperature sensors are in communication connection with the collectors through high frequency radio frequency between a first antenna and a second antenna. The collectors are in communication connection with the master control terminal through an industrial bus. The wireless passive temperature measurement system is advantageous in that the a power supply is not needed, so that the maintenance cost of the power supply is reduced; electric connection is not needed, so that high-voltage isolation is achieved; and the system is convenient to install and use, and is high in temperature measurement accuracy.