Transparent tube liquid monitoring device and method capable of preventing misjudgment

The invention provides a transparent tube liquid monitoring device and method capable of preventing misjudgment, and the device comprises an LED light source, a transparent infusion tube, a photoelectric sensor, a signal modulation and amplification circuit module, an ADC and rear-end processor module. The LED light source is used for providing a light source for the transparent infusion tube; thephotoelectric sensor is used for acquiring a light intensity signal of the transparent infusion tube, converting the acquired light intensity signal into a current signal and transmitting the currentsignal to the signal modulation and amplification circuit module; the signal modulation and amplification circuit module is used for converting the current signal into a voltage signal, amplifying the voltage signal through an amplification circuit, and then transmitting the amplified signal to the ADC and rear-end processor module; the ADC and back-end processor module is used for converting thereceived voltage analog si