Pressure detection circuit and blood analysis device

The invention discloses a pressure detection circuit. The pressure detection circuit comprises a pressure sensor, a comparison circuit and a judgment circuit. Wherein the pressure sensor is used for detecting pressure in real time and obtaining a corresponding voltage detection signal; the comparison circuit is connected with the pressure sensor and is used for comparing the voltage detection signal with a preset voltage threshold value in real time and outputting a comparison result signal; the judgment circuit is connected with the comparison circuit and used for judging whether the voltage detection signal meets the requirement of the preset voltage threshold value or not according to the comparison result signal and outputting a judgment result signal. According to the pressure detection circuit provided by the invention, real-time pressure detection can be carried out by adopting a hardware mode, so that the change of the pressure can be accurately detected. 本申请公开了一种压力检测电路，所述压力检测电路包括：压力传感器、比较电路、判断电路。其中，压