Sensor faucets are used to wash hands in restaurants, so do you know the principle of sensor faucets?
The principle of induction faucet is mainly through the principle of infrared emission to achieve water self-retention. Today, Xiaobian will share with you the principle of induction faucet and the purchase method.
1. Principle of induction faucet
The induction faucet is composed of an infrared transmitting circuit, an infrared receiving and amplifying circuit, a control circuit, a solenoid valve, and a power supply.
The principle of the induction faucet is based on the principle of infrared reflection. When the human hand is placed in the infrared region of the faucet, the infrared light emitted by the infrared transmitting tube is 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. After the solenoid valve receives the signal, the valve core is opened according to the specified command to control the water outlet of the faucet.
When the human hand leaves the infrared sensing range, the solenoid valve does not receive the signal, and the solenoid valve spool is reset by the internal spring to control the water shutoff of the faucet.
2. The advantages of induction faucet
1. Convenience, water saving, hygiene, avoid 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 battery within two years;
3. Built-in filtration results to prevent debris from entering the solenoid valve. Easy to clean, beautiful appearance and firm 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. To distinguish 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 the opening and closing are easy and unobstructed without slipping. But inferior faucets not only have large gaps, but also have 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 made of cast copper as a whole, and the sound of beating is dull. If the sound is brittle, it must be stainless steel, and the quality will be a notch worse.
3. Recognition 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 often only have some paper labels attached, or even no marks. Be careful when purchasing.
