Patent ID: 9534962
Date: 2017-01-03
CPC Classifications: G01K

Claim:
1. A temperature measurement device for measuring an environment temperature comprising: a thermistor, coupled to a first node, having a specific impedance value at a specific environment temperature point; a resistor, having a first terminal coupled to the first node; a determination circuit for obtaining a real impedance value of the resistor, wherein the real impedance value of the resistor is affected by process variation and the real impedance value of the resistor is different from a theoretical impedance value of the resistor; and a measurement circuit, coupled to the first node, for receiving the real impedance value of the resistor from the determination circuit, receiving a voltage measurement value signal generated at the first node, and obtaining a value of the specific environment temperature point according to the voltage measurement value signal and the real impedance value of the resistor, wherein the resistor has the theoretical impedance value, and the measurement circuit obtains the value of the specific environment temperature point according to the voltage measurement value signal, the real impedance value and the theoretical impedance value of the resistor.