Can infrared human body induction switch give false alarm to small animals?

Because its principle is to sense infrared heat, it can't be sensed unless the animal is dead and the body has no heat.

Those with heat are shown in red, and those without heat are shown in blue. As for those who only sense people, they are gone now, just change their sensing ability.

Because any animal's body temperature is different, we have a fever at 40 degrees, but birds have normal body temperature at 40 degrees, different temperatures and different perception abilities.

Infrared induction switch is an automatic control switch based on passive infrared induction technology. The main sensing device is the infrared sensor of human body heat release.

The human body temperature is generally 37 degrees, which will emit infrared rays with a wavelength of about 10 micron, while the temperature around the human body is generally lower than 37 degrees, which is greater than the infrared radiation wavelength of the human body. The pyroelectric infrared sensor works by detecting the change of infrared radiation in the area.

Extended data:

disadvantaged

Easy to be interfered by various heat sources, light sources, radio frequency radiation and hot air flow; Passive infrared penetration is poor, and human infrared radiation is easily blocked; When the ambient temperature is close to the human body temperature, the detection and sensitivity are obviously decreased, and sometimes short-term failure occurs.

superiority

It is usually mainly used for automatic control of street lamp switches in public places. The switch consists of an infrared detection circuit, an infrared signal processing circuit, a signal output control switch circuit and a power supply circuit.

Infrared signal processing integration mainly completes infrared signal processing, and the power supply of the circuit supplies power to each sub-circuit in the design circuit according to the requirements of each part of the circuit to ensure the stable performance of the circuit.

Infrared induction switch has the advantages of long detection distance, wide application range, strong anti-interference ability and stable working performance.

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