| 摘要 |
A temperature measurement device, comprising a current type temperature sensor (S2) used for outputting a first current signal corresponding to a temperature; a thermistor type temperature sensor (S1) used for outputting a second current signal corresponding to the temperature; a voltage division resistor (R2) which is connected to a thermistor (Rt) in the thermistor type temperature sensor (S1) in series and is used for controlling the voltage of the second current signal to be within the voltage range of the first current signal; a voltage sampling resistor (R1) used for converting the first current signal into a first voltage signal or converting the second current signal into a second voltage signal; and an AD converter (ADC) used for converting the first voltage signal into a first digital signal or converting the second voltage signal into a second digital signal. The temperature measurement device can be compatible with the current type temperature sensor (S2) and the thermistor type temperature sensor (S1) through a simple circuit structure, thereby providing more measurement selection for users at lower costs. |
