Human body blowing sensor module

Jason.F

Human body blowing sensor module [Copy link]

 

 What module is good for sensing human breathing? It's a weak blowing, not like measuring vital capacity. Is there any good air flow meter you can recommend? The current solution is to measure the speed by the rotation of the blowing blade. If you have a good solution, please recommend it and explain it to me.

littleshrimp

Depending on your accuracy, you can use the strain method or the air pressure method. If you just want to determine whether there is air blowing, you can also use a capacitive humidity sensor.

dcexpert

It seems that the air pressure sensor is OK. Someone has posted it before.

chunyang

How weak is it? Under what circumstances is it measured? It is easy to blow air into a pipe, but it is difficult to measure it in an open space.

star_66666

I've never heard of this sensor.

tiankai001

The application environment is very important. I don't know what environment you want to use it in.

ryan_song

The barometer is OK, LPS22HB.

qwqwqw2088

I think it is still necessary to use a gas pressure sensor

皈依

Recommended pressure sensor with high accuracy. Breathing at a distance of 15-20cm from the pressure sensor is equivalent to a weight of 6-10mg.

Jason.F

Guiyi published on 2018-12-18 08:23 Recommended pressure sensor with high accuracy. Breathing at a distance of 15-20cm from the pressure sensor is equivalent to the measured weight of 6-10mg.

6666

Jason.F

chunyang posted on 2018-12-8 16:41 How weak is it? Under what circumstances is it measured? If it is easy to blow air into a pipe, it is very difficult to measure it in an open space.

It is just a person blowing gently, just used as a switch quantity to control the LED light. I used two solutions. 1. Microphone head for detection 2. Fan blade counting. The effect is OK.

qwkhjgf

How about radar sensing?

jmsht33

Air pressure sensors have been used in electronic cigarettes to detect breathing intensity.

Jason.F

jmsht33 posted on 2018-12-27 11:13 Air pressure sensors have been used in electronic cigarettes to detect breathing intensity

Yes, I have learned about it. Due to cost issues, I did not choose this.