Want to ask, is that we are going to do a through pulse detection and alcohol, and then the transmission of data to the microcontroller, but we find information problem is that the pulse detection is analog, we intend to use the AD converter, but he didn't have the AD interface pulse sensor, this kind of situation?

CodePudding user response:

PPG photoelectric displacement
You search on the Internet, know this concept, through PPG photoelectric displacement (blood volume) measurement can get people's pulse waveform, we common smart watches (millet, apple, huawei), can measure a person's heart rate, blood oxygen, etc., are using PPG photoelectric displacement measurement technology, the sensor is small, a light-emitting LED, a light tube is done,

CodePudding user response:

reference

but he no AD pulse sensor interface

Sensors, how may not give interface specifications, you looking at what is this sensor is given signal
If you mean MCU AD interface, it is good to buy an ADC chip plugins