| 主权项 |
1. A wallmount dual beam sensing device, comprising:
a housing having a detection cover mounted on a front surface of the housing; a control module mounted inside the housing and having a microcontroller unit (MCU), wherein the MCU has an ambient light terminal, an infrared terminal and a microwave terminal; an infrared detector mounted inside the housing, covered by the detection cover, electrically connected to the infrared terminal of the MCU, and detecting human presence; a microwave sensing module mounted inside the housing and electrically connected to the microwave terminal of the MCU; and an ambient light detector mounted inside the housing, covered by the detection cover, and electrically connected to the ambient light terminal of the MCU to detect luminance of a monitored environment; wherein the infrared detector and the ambient light detector are constantly operating after powered on; when the detected luminance of the monitored environment is lower than a luminance threshold, the MCU determines if the infrared detector detects human presence, when the infrared detector detects human presence, the MCU activates the microwave sensing module to determine if the microwave sensing module detects human presence, and when the microwave sensing module detects human presence, the MCU sends out a control signal adapted to turn on at least one electric appliance; and when the at least one electric appliance is turned on and the detected luminance is equal to or higher than the luminance threshold, the MCU further determines if the human presence is detected by the infrared detector and the microwave sensing module, when both the infrared detector and the microwave sensing module detect no human presence, the MCU then outputs a control signal to turn off the at least one electric appliance. |
