Patent ID: 8624526

Claim:
A sensing device for controlling an LED lighting equipment, and more especially for electrical connection with at least one LED lighting equipment that can be driven by a DC power supply, wherein the sensing device is supplied with an external DC power source and can actuate the LED lighting equipment, so that the LED lighting equipment can be controlled to be with an illuminating level being selected from a group of predetermined levels including full brightness and non-brightness, said sensing device comprising: a control module, capable of receiving external signals and outputting control signals after the external signals being processed, and capable of sending a control signal train of pulse-width modulation; a signal adjusting unit, being electrically connected to said control module for receiving the control signal train of pulse-width modulation from said control module and increasing the driving force of the control signal train, so that said signal adjusting module can output an amplified signal train of pulse-width modulation, which can directly actuate the LED lighting equipment; an object detecting unit, being electrically connected to said control module, for detecting and determining whether a person is existed or not, so as to send a signal to said control module, whereby said control module can modify the control signal train of pulse-width modulation to allow the LED lighting equipment to be gradually changed to a different illuminating level in response to a state change of the signal sent from said object detecting unit; and a manual time-delay adjustor, being electrically connected to said control module, for adjusting a delay time between a first illuminating level and a second illuminating level, whereby said control module can modify the signal train of pulse-width modulation, according to the delay time, to enable the LED lighting equipment to arrive at the second illuminating level upon the delay time expires.