The human body has a stable body temperature, which is […]
The human body has a stable body temperature, which is generally 37 degrees, so it will emit special light wavelengths up and down 10um infrared sensor. Passive infrared probe means that it detects the infrared sensor up and down 10um sent by the body to work. The infrared sensor up and down 10um sent by the body is concentrated on the infrared sensor source after being enhanced by the filter.
Infrared sensor sources generally use pyroelectric components. Such components will lose charge balance when receiving a change in the temperature of the infrared radiation source of the body, and release negative charges, which can be turned on after the power circuit system detects and solves the problem. switch. When many people enter the field of magnetic induction of the power switch of the smart door opener, the dedicated controller detects the transformation of the infrared spectrum analysis of the body, the power switch is automatically connected to the load, and the person does not leave the field of magnetic induction, the power switch will continue to be connected; After it is removed or there is no action in the magnetic induction area, the power switch will automatically turn off the load when the time is adjustable (time 20-1000 seconds).
Infrared induction switch, magnetic induction viewing angle 120 degrees, spacing 6-10 meters, court time adjustable. If the blocks with temperature are all infrared sensors to the surrounding radiation source, it means that the controller receives the infrared induction from these blocks, and the power circuit becomes larger after going through the power circuit. If standing still in the infrared region, the controller can also distinguish that infrared induction magnetic induction is related to temperature and not related to whether the block is moving.