555 occlusion infrared automatic switch faucet circuit design

When someone reaches for washing, the infrared beam is blocked, the faucet automatically opens and drains, and the person is washed high. After a delay of 1 s, the water is automatically turned off and stopped. Easy to use, both hygienic and water efficient.
The faucet switch control circuit includes an infrared pulse emission transmitting circuit, an infrared receiving, decoding circuit, a monostable trigger and a relay control circuit, and an electromagnetic drain valve, as shown in the figure. The infrared pulse modulation transmitter is composed of the infrared transmitting special device HG-111F. It has few external components, adjusts RPl, makes the frequency of the pulse vibrator oscillate at 38kHz, and the output pulse signal is output by 7 feet, via VT1. The infrared light emitting diode LED1 is driven to emit infrared pulse modulated light.
The infrared receiving and decoding circuit is composed of a sinusoidal photosensitive two-way tube D1 and a receiving amplification and decoding circuit composed of IC2 as a core. IC2 uses infrared ASIC CX20106 (KA2184), which has built-in preamplifier, limiting amplification, bandpass filtering, detection, shaping and so on.