Coupling-based non-contact type temperature measurement system and measurement method thereof

摘要

A coupling-based non-contact type temperature measurement system comprises a controller, a drive circuit connected to the controller, a switch circuit connected to the drive circuit, a resonance circuit connected to the switch circuit, a temperature sensor coupled to the resonance circuit, and a signal detection circuit connected to the resonance circuit and the controller. In the non-contact type temperature measurement system, the temperature sensor is isolated from other components of the system, and non-contact type temperature measurement of an object is implemented through electromagnetic coupling. The system has a simple circuit and a low cost and is suitable for small-scale design, thus applicable to various scenarios. Further provided is a measurement method of a coupling-based non-contact type temperature measurement system. The measurement method implements the transfer of a temperature signal in an electromagnetic coupling form, and performs calculation and analysis according to the temperature signal, thereby implementing non-contact type temperature measurement of an object, and is therefore applicable to reliable temperature measurement for internal core wires in high-voltage power cables.