Inductive faucet of which a detection range is adjustable

Abstract

An inductive faucet of which a detection range is adjustable is provided, in which two transmitter units, one receiver unit, and one controller unit are arranged on a faucet body. The controller unit is used to automatically adjust the strength of signal transmitted by the transmitter unit for obtaining a preferable detection range; thus, the incorrect judgment rate may decrease significantly and further power waste caused by the extremely long detection range may be avoided. Particularly, regarding the inductive faucet provided with a battery used as a power source, the battery life may even be prolonged and the frequency of battery replacement may decrease.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]This invention relates to an inductive faucet of which a detection range is adjustable.[0003]2. Description of the Prior Art[0004]With reference to FIG. 1 illustrating a conventional inductive faucet, a faucet body 3 is fixed onto a washbasin 1 of a trough 2. A water outlet 4 is formed at the top of faucet body 3. At the bottom of faucet body 3, an infrared inductive device 5 is provided facing toward the front of washbasin 1. The inductive device 5 continuously transmits a horizontal signal toward the front of washbasin 1, and the transmit power of inductive device 5 is controlled, thus making the detection ranger to be larger than the path along which the faucet body 3 yields water and to be smaller than the front edge of trough 2. Thus, when a user's hand is close to the faucet body 3, a signal reflects. At this time, the inductive device 5 receives the reflecting signal to turn ON a water supply switch and the water...

AI Technical Summary

Benefits of technology

[0007]An inductive faucet that may adjust a detection range according to this invention is provided, in which a faucet body is mainly arranged on a washbasin provided with a trough. A water outlet is formed at the top of faucet body and a PCB is arranged around the water outlet. On the PCB, two transmitter units, one receiver unit, and a controller unit are provided. Thus, the controller unit may control the transmitter units to transmit a signal toward the bottom side of washbasin, and detect the strength of signal reflected from the bottom side of trough through the receiver unit. When the signal strength is lower than the default, the setting of transmitter unit is kept and thus the standby mode enters; contrarily, when the strength of reflected signal is larger than the default value, the controller unit re-transmit the lower signal transmitted by the transmitter unit and then re-detect the reflected signal through the receiver unit. The steps are repeated until the strength of signal is lower than the default value, making the inductive faucet defect the signal in a preferable range. Thus, the incorrect judgment rate may decrease significantly and further power waste caused by the extremely long detection range may be avoided. Particularly, regarding the inductive faucet provided with a battery used as a power source, the battery life may even be prolonged and the frequency of battery replacement may decrease.

Problems solved by technology

Particularly, regarding the inductive faucet provided with a battery used as a power source, the battery life may even be prolonged and the frequency of battery replacement may decrease.

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