Principle of infrared control faucet
The automatic induction faucet is based on the principle of infrared reflection. When a human hand is placed in the infrared region of the faucet, the infrared emitted by the infrared emitting tube is reflected to the infrared receiving tube due to the obstruction of the human hand, and the signal processed by the microcomputer in the integrated circuit is sent to the pulse solenoid valve. After receiving the signal, the solenoid valve opens the valve core according to the specified instruction to control the faucet to discharge water. When the hand leaves the infrared sensing range, the solenoid valve does not receive the signal, and the valve core of the solenoid valve is reset through the built-in spring to control the tap to turn off the water.
Sensing distance: the infrared emission length, that is, the sensing distance, is mostly around 25CM (measured with 29.7cm×29.7cm white A4 paper). Usually people are not sensitive to automatic sensing faucets, mostly because the sensing distance is shortened. Due to the weak color resistance of infrared, some dark colors will change its distance, such as black color will reduce the sensing distance by about 65,438+05%. If the induction line is wet, it will also affect the length of the induction distance.
Selection of fully automatic induction faucet
1. The solenoid valve has good waterproof performance.
Because it is installed under the basin for a long time, the machine will cause poor contact and will not work after being damp; The minimum service life of solenoid valve should reach the industry implementation standard (654.38+0.5 million times or more).
2, faucet technology
Appearance without scratches, chrome plating is good. It is made of brass. Chrome plating and weight difference of low-cost automatic induction faucet. Can't pass the 24-hour salt spray test, and the weight is about 400 grams. However, a good manufacturer of automatic induction faucets can control the weight of faucets above 500 grams, and can pass the 48-hour salt spray test, and the service life of faucets is long.
3. Is the infrared sensing part sealed with epoxy resin or treated with moisture?
The waterproof plug connected to the plug, the circuit is controlled by low-power single chip microcomputer, which has anti-interference ability to light and will not be misoperated; The sensing distance can be adjusted by the remote controller, and manual adjustment can easily damp the circuit board, shorten the sensing distance and affect the normal use; The technology of automatic distance adjustment is immature, which will shorten the distance because of color change. The remote control makes the product more user-friendly.
4. Try to choose qualified manufacturers specializing in the production of automatic induction faucets.
Because more than 90% of the automatic induction faucets in domestic professional sanitary ware factories are outsourced, the quality, after-sales and price are not satisfactory.
5, after-sales service ability
Don't trust too many promises and guarantees. In order to expand sales, some manufacturers and businesses promise a five-year free warranty to attract customers' attention at low prices. This enterprise has developed for less than two years. When there is a real product quality problem or the product is over-guaranteed, they charge the maintenance fee to the customer and fail to implement the three guarantees policy related to the product. The consumer rights of many users are not guaranteed.
Through the above introduction, we have a general understanding of the principle of infrared control faucet and the matters needing attention in the purchase process. It can be seen that the infrared control faucet, as a modern highly contact invention, can be completely applied to our personal families and bring us convenience. After understanding the principle of infrared control faucet, you can maintain your own faucet in time. You can also refer to this article when purchasing infrared control faucet.
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