Passive wireless temperature sensor

TL;DR: In this paper, a passive wireless temperature sensor consisting of a receiving antenna, a radio frequency energy collection module, protection module, a power supply management module, modulation and demodulation module, data management module and a temperature measurement module is used as a temperature measuring element.

Abstract: The utility model discloses a passive wireless temperature sensor, and belongs to the field of wireless sensing. A passive wireless temperature sensor comprises a receiving antenna, a radio frequencyenergy collection module, a protection module, a power supply management module, a modulation and demodulation module, a data management module, a temperature measurement module, an external sensor module, a wireless transmitting module, a transmitting antenna, an auxiliary power supply, a wireless energy transmitting module and a receiving module. According to the utility model, the radio frequency energy collection module and the wireless energy emission module generate current through an electromagnetic induction principle to supply power to a circuit in a to-be-tested environment, therebysolving the power supply problem of the circuit in a special environment; a Schottky diode is used as a temperature measuring element, and a Schottky diode made of a special material is used as a temperature collecting element, so that the sensor has the characteristics of high temperature resistance, high pressure resistance and high frequency, and the problem of failure of a common sensor in a special environment is solved; no direct power supply unit and no data transmission flat cable are arranged in the circuit of the to-be-tested environment, the structure is simple, and layout is convenient.