TEMPERATURE COMPUTATION MODULE AND TEMPERATURE COMPUTATION METHOD FOR INFRARED THERMOPILE TEMPERATURE SENSOR WITH SELF-CORRECTION FUNCTION

摘要

A temperature computation method for an infrared thermopile temperature sensor with a self-correction function. The method comprises: using a multiplication and division operation to realize the correction computation of a response rate R, where V_P = V_res * ΔV₂/ΔV₁; according to V_P and T₀, generating a two-dimensional lookup table address; and based on a bilinear interpolation method, computing a temperature T₁ of an object to be measured, first conducting linear interpolation on the output data V_P of a two-dimensional lookup table unit in sections, then conducting linear interpolation on a local temperature T₀ in sections, and then outputting the temperature T₁ of the object to be measured. Also provided is a temperature computation module (8) for realizing the temperature computation method. The temperature computation module comprises: a multiplication and division logic unit (9), an address generation module (10), a two-dimensional lookup table unit (11) and an interpolation operation unit (12), so that the circuit scale of the temperature computation module can be reduced, and the temperature measurement accuracy of the infrared thermopile temperature sensor can be improved.