Profound hypothermia measurement device

The utility model discloses a profound hypothermia measurement device which comprises a 10mu A constant-current source, a carbon resistance thermometer, a linear signal converter and a measurement and control system, wherein the 10mu A constant-current source is used for providing a power supply to the carbon resistance thermometer, the linear signal converter is used for converting an input nonlinear signal into a standard 4-20mA industrial signal and directly transmitting the standard 4-20mA industrial signal to the measurement and control system, and during measurement, a four-wire system connection method is adopted, and a temperature value is directly read after processing of an upper computer of the measurement and control system. By adopting a four-wire system measurement method of the carbon resistance thermometer, the nonlinear signal of the carbon resistance thermometer is directly converted into a standard signal to be transmitted to the measurement and control signal through the linear signal conv