Signal processing method of single-power-supply high-temperature LVDT sensor with temperature sensor

The invention belongs to the field of sensor signal processing, and particularly relates to a signal processing method of a single-power-supply high-temperature LVDT sensor with a temperature sensor. Through an LVDT sensor in a high-temperature area, a platinum resistor temperature sensor in the high-temperature area, an armored signal cable and a single-power-supply signal processing circuit part in a low-temperature area, multi-path signals detected by the sensor are transmitted from a high-temperature area to a low-temperature area through the high-temperature-resistant multi-path armored signal cable. The single-power-supply signal processing circuit part comprises a floating constant current source, a PT100 temperature signal amplification circuit, a temperature signal extraction circuit, an LVDT signal amplification circuit, an LVDT signal extraction circuit and a reference voltage Vref10. The single-power-supply high-temperature LVDT sensor with the temperature sensor has the advantages of being minimu