The sensory faucets are used to wash hands in restaurants, so do you know the principle of the sensory faucet?
The principle of the induction faucet is mainly to realize the self-retention of water through the principle of infrared emission. Today, I will share with you the principle of the induction faucet and the method of purchase.
1. The principle of induction faucet
The induction faucet is composed of an infrared transmitting circuit, an infrared receiving amplifier circuit, a control circuit, a solenoid valve and a power supply.
The principle of the induction faucet is through the principle of infrared reflection. When the human hand is placed in the infrared area of the faucet, the infrared rays emitted by the infrared emitting tube are reflected to the infrared receiving tube due to the blocking of the human hand.
The signal processed by the microcomputer in the integrated circuit is sent to the pulse solenoid valve, and the solenoid valve opens the valve core according to the specified instruction after receiving the signal to control the water from the faucet.
When the hand of the human body leaves the infrared sensing range, the solenoid valve does not receive the signal, and the solenoid valve core is reset by the internal spring to control the water closing of the faucet.
2. Advantages of sensor faucets
1. Convenience, water saving, sanitation, avoiding cross infection;
2. The DC machine uses 4 alkaline batteries, which can be used 300 times a day, and there is no need to replace the batteries within two years;
3. Built-in filtering effect to prevent debris from entering the electromagnetic valve. Easy to clean, great looking and strong results.
3. Selection method of induction faucet
The surface chrome plating process of a good faucet is very particular, and it is usually completed after several processes. The quality of the faucet depends on its brightness. The smoother and brighter the surface, the better the quality.
1. Turn the handle
When turning the handle of a good faucet, there is no excessive gap between the faucet and the switch, and it is easy to open and close without slipping. However, inferior faucets not only have a large gap, but also a large sense of obstruction.
2. Listen to the sound
The material of the faucet is the most difficult to distinguish. A good faucet is cast copper as a whole, and the sound is dull when tapped. If the sound is very brittle, it must be made of stainless steel, and the quality will be a grade worse.
3. Identification mark
If you really can’t tell the difference, you can choose a more formal brand.
Generally, regular products have the brand logo of the manufacturer, while some informal products or some low-quality products are often only pasted with some paper labels, or even without any marks, so you must pay attention when purchasing.
