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发明授权
CN105051436B 包括电容传感和超声波传感的龙头 有权

包括电容传感和超声波传感的龙头
摘要：
一种流体输送装置包括喷口、超声波传感器和电容传感器。所述超声波传感器经配置以在使能时检测邻近所述喷口的使用者的存在。所述电容传感器经配置以在靠近所述喷口的区域中限定电容感测场并还检测使用者的存在。控制器耦合到所述电容传感器和所述超声波传感器。所述控制器经编程以基于来自所述电容传感器的输出信号在所述电容感测场中检测使用者的存在。所述控制器还经编程以响应于在所述电容感测场中用所述电容传感器检测出使用者的存在，使能所述超声波传感器，从而减少由所述超声波传感器使用的电量。
摘要（英）：

A fluid delivery apparatus includes a spout, an ultrasonic sensor, and a capacitive sensor. The ultrasonic sensor is configured to detect the presence of a user adjacent the spout when enabled. The capacitive sensor is configured to define a capacitance sensing field in an area near the spout and also to detect a presence of a user. A controller is coupled to the capacitive sensor and the ultrasonic sensor. The controller is programmed to detect the presence of a user in the capacitance sensing field based on an output signal from the capacitance sensor. The controller is also programmed to enable the ultrasonic sensor in response to detecting the presence of the user in the capacitance sensing field with the capacitive sensor, thereby reducing the amount of power used by the ultrasonic sensor.

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