| 摘要 |
<p>The present invention relates to a system for automatically controlling the lamps of an underground parking lot with a microwave sensor of a power line communication control method comprising the microwave sensor, an AC/DC converter, a controller, a switching unit, a noise filter, an SMPS, and a DC/DC converter. The microwave sensor is installed at constant intervals to sense a person or a vehicle and periodically generates microwave electromagnetic waves. The AC/DC converter converters AC sensing signals into DC sensing signals and transmits the same to the controller. The AC sensing signals are inputted from the microwave sensor. The controller outputs a control signal for turning on/off light emitting diode modules by using the sensing signals of the microwave sensor. The switching unit receives the control signal of the controller and turns on the light emitting diode modules. The noise filter receives AC 220V voltage from the outside; blocks surge voltage; and protects an inner circuit. The SMPS drops the AC 220V voltage; converts the same into DC 12V power; and supplies the same to the inside. The DC/DC converter supplies the DC 12V power as operation power.</p> |
