The purpose is to allow the dust or small particles to pass between the infrared pairs of tubes, the dust_sense terminal can detect the level changes. The problem is that this is not sensitive enough. Can you help me see how to change it?
Brennan 发表于 January 14, 2021
U6-B, you can use the op amp as a comparator, and the problem will be the problem. The rising slope is relatively slow (also called slew rate). Replace this place with a comparator, the effect is better
Ronald 发表于 January 14, 2021
Personally, infrared photoelectric is not suitable for dust or small particle detection. Infrared light has a long wavelength, which is related to the relative size of dust particles and covers the light path. Optoelectronic devices are easily obscured by dust and reduce accuracy. , And even fail.
Alec 发表于 January 14, 2021
