Patent ID: 8120211
Filing Date: 2012-02-21
Classification: G04G,H03K,H05B,Y02B

Abstract:
1. A timing-device equipped energy-saving socket, comprising: an enclosure, having a power plug deposed on one side, and a power socket deposed on the other side, and a control device, adapted to be deposed in the enclosure, mainly comprising: a relay, having a switch and an exciter coil; the switch being normally in a disconnected status and deposed between the power plug and the power socket to make AC power not to be transmitted into the power socket; an RC decompression circuit, adapted to connect to the switch of the relay, and to step down the voltage of a first received AC power signal from the power plug through the relay when the switch is connected; a rectifier filter circuit, adapted to connect the RC decompression circuit, and to rectify and filter the signal being stepped down by the RC decompression circuit; a manual button, which is connected to the power plug and normally in a disconnected status; a limiting circuit, adapted to connect to the manual button to receive a second AC power signal sent from the power plug when the manual button is connected, and the electric current of the received signal being capable of being limited, to prevent burn down of an insulation circuit; the insulation circuit, an input port of the insulation circuit being connected to the limiting circuit, and an output port of the insulation circuit being connected to the rectifier filter circuit, to prevent signal transmission from the rectifier filter circuit to the limiting circuit; a regulator filter circuit, adapted to connect to the output of the rectifier filter circuit, and to rectify and filter the first and second AC power signals being stepped down by the rectifier filter circuit to supply AC power to a microprocessor; a button detection circuit connected to the limiting circuit; the button detection circuit being configured to detect the movement of the manual button and send the detecting result to the microprocessor; a power signal detecting circuit connected to the switch of the relay; the power signal detecting circuit being adapted to detect the output of the first AC power signal and send the detecting result to the microprocessor when the switch is connected; the microprocessor, adapted to connect to the regulator filter circuit, the button detection circuit and the power signal detecting circuit, which receives the signals sent from the regulator filter circuit, the power signal detecting circuit, and the button detection circuit and processes and interprets the received signals; a relay driver circuit connected to the microprocessor and the exciter coils of the relay; wherein the microprocessor will send a signal to the relay driver circuit when receiving AC power, thus the exciter coil of the relay is excited by the relay driver circuit and the switch is switched into a connected status; and a timing display connected to the microprocessor; the microprocessor being adapted to enable the timing display to show a supplying power time according to the signal sent by the button detection circuit, wherein when the power plug is plugged into a wall plug or a power cord, AC power is guided into the power plug; however, since the power plug is connected to the switch of the relay and the manual button, and the switch and the manual button are disconnected, AC power is unable to be sent to the power socket; if AC power is needed for the power socket, the manual button needs to be pressed for connection and to allow AC power to be sent to the microprocessor through the limiting circuit, the insulation circuit, the rectifier filter circuit, and the regulator filter circuit to allow the microprocessor to function normally and wait for the regulator filter circuit being activated; when the activation is done, the regulator filter circuit propels the relay driver to propel the exciter coil of the relay to excite and enable the switch of the relay to be connected; moreover, the manual button automatically returns to the state of disconnection in order to allow AC power to be sent to the microprocessor through the switch, the RC decompression circuit, the rectifier filter circuit, and the regulator filter circuit, and the microprocessor can receive a steady power supply to function normally; also, AC power can go through the switch to be sent to the power socket, allowing the power socket to provide AC power, wherein when setting the power supply time, the manual button is pressed again in order to allow second AC power signal to flow through the manual button again so it can be detected by the button detection circuit; since the insulation circuit is deposed between the manual button and the rectifier filter circuit, there would be no misdetection from the button detection circuit; the button detection circuit will send the detected signal to the microprocessor, and then the microprocessor will drive the timing display to show the setting of the power supply time, and wherein after the setting of the power supply time, the microprocessor starts calculating the power supply time according to the signal detected by the power signal detecting circuit; when it is determined that the power supply time is up, the microprocessor drives the relay driver circuit to propel exciter coil to excite, in order to switch the switch to disconnect so AC power cannot be sent to the power socket; also, since the manual button is under an automatic recovery status when the switch is disconnected, AC power cannot be sent into the control device, such that the control device takes no action and the purpose of saving energy is achieved.