CN202261949U - LED lighting circuit energy saving control device - Google Patents

Abstract

An energy-saving control device for an illumination loop of an LED lamp comprises at least one illumination loop; at least one AC-to-DC power conversion device for providing AC-to-DC current and connecting with a lighting circuit; at least one DC voltage reduction and stabilization device which is connected with the AC-to-DC power conversion device by the lighting loop to provide DC voltage reduction and stabilization; the LED lamps are connected with the DC voltage reduction and stabilization device through the lighting loop, and are selectively provided with grouped LED lamps and individual LED lamps in the lighting loop so as to provide the brightness and the illumination value of the LED lamps; the lighting circuit can actively provide the on or off or different brightness of the LED lamps or individual LED lamps under the lighting circuit grouping according to the setting of the AC-DC power conversion device, the DC voltage reduction and stabilization device and the LED lamps. The utility model discloses reach the purpose of the energy-conserving power saving of different situations.

Description

LED lighting circuit energy saving control device

technical field

The utility model relates to an energy-saving control device for a lighting circuit of a light-emitting diode (LED) lamp. With the advancement of LEE luminous efficiency technology, LED light source can be used as the main lighting, and it is also one of the mainstream technologies of green energy in the future, which can gradually replace part of indoor lighting and public space lighting. In response to the trend of energy saving and environmental protection, this utility model adopts an energy-saving control device that can control the lighting circuit of LED lamps, so that LED lamps and lamps can be turned on and off according to control commands or multi-stage light and dark control, avoiding long-term full power output, Enough to achieve the purpose of energy saving. At the same time, the power converter with high power factor is used to convert the AC power provided by the original city power into other AC power or DC power with high power factor, which is used as the brightness control of the LED lamp group lighting.

Background technique

Common ways to control the lighting circuit can use general switches, timers, remote controls and dimmers, etc., to achieve the purpose of turning off, turning on or dimming the light source. And the common dimmable lighting circuit is only designed as a single circuit, which is used for room dimming lighting or table lamp dimming. In order to achieve the purpose of lighting energy saving, you can use to adjust the appropriate illuminance to avoid wasting lighting power. However, there are many places where the light source is not allowed to be completely turned off, and sometimes it must meet the requirements of laws and regulations, such as night lighting or dark area lighting in public places, parking lots, stairwells, street lights, etc. At this time, higher requirements for control are required. mode to achieve a usage scenario that complies with regulations, safety and energy-saving management.

In order to clearly reveal the relevant patents, etc., the above-mentioned prior art is further explained as follows:

Chinese Patent No. 102155630A discloses an energy-saving LED lamp, which is characterized in that a lamp shell is used as the main body, a human body sensor and a plurality of LED elements are placed on the lamp panel, and a photosensitive element is placed on the side of the lamp shell. Then put the control circuit with the time adjustment switch into the lamp shell, the power end of the lamp shell is the copper head of the light bulb, and the copper head of the light bulb is installed on the general lighting filament type light bulb holder. Consider the energy savings of individual light bulbs.

Chinese Patent No. 101699921A discloses a control method of LED public lighting system, which is characterized in that: according to the use of LED public lighting system, the LED lighting system is controlled by PWM mode. When the utilization efficiency of LED public lighting system is high, High power output, when the utilization efficiency of the LED public lighting system is low, the stepwise reduction of power is controlled to form an energy-saving power supply schedule corresponding to the usage of the LED public lighting system and the stepwise power value. It is regarded as the realization of PWM mode to control the separate loop of LED lighting system.

Chinese Patent No. 201418186 discloses an energy-saving intelligent control device for LED lamps. It includes a microprocessor module and at least one LED lamp. Each LED lamp is equipped with an LED driver module and an environment detection module. The environment detection module The signal is connected to the microprocessor module, the input end of the LED driving module is electrically connected to the output end of the microprocessor module, and the output end of the LED driving module is electrically connected to the input end of the LED lamp. Considered as the energy saving of individual LED lamps.

Chinese Patent No. 201414247 discloses a LED lamp driving control device, including a single chip microcomputer, a data memory, a latch circuit, a current regulation driving circuit, a communication interface circuit, a clock circuit, and an LED load. The data memory is connected to the MCU bus, the communication interface circuit is connected to the MCU bidirectional serial communication, the clock circuit is connected to the MCU bus, the latch circuit is connected to the MCU bidirectional input/output port, the LED load is connected to the output terminal of the current regulation drive circuit, and the current regulation drive circuit The input end is connected with the output end of the latch circuit. This design adjusts the output for the lamp driver control and has nothing to do with energy efficiency.

Chinese Patent No. 1434242 discloses an LED lamp, which includes a plurality of LED elements, a human body sensor, a photosensitive element, a lamp panel, a time adjustment switch, a control circuit and an LED lamp base with a copper head of a bulb; The sensor detects the human body, so that the normal LED lamps are in a low-illumination state, and turn to a high-illumination state due to the approach of the human body, and use the photosensitive element to sense the ambient illuminance. Turn off the light source when sufficient. This design can only achieve the purpose of automatic dimming due to detection of human body, but cannot achieve time-segmented control and other methods.

Chinese patent No. 201893956U discloses an intelligent control device for high-power LED lamps, including LED constant current drive circuit, centralized intelligent central control CPU, brightness detection module, infrared probe module, lamp power circuit detection alarm and intelligent energy-saving management software composition. This design is a central control device, which can only be achieved by involving industrial control software and intelligent energy-saving management software.

Chinese Patent No. 201937892U discloses a control device for light-emitting diode lamps, which includes at least one rectifying and stabilizing module for electrically connecting external power, and the rectifying and stabilizing module can output stable direct current and voltage; at least one The current regulator is electrically connected to the rectifying and stabilizing module and the LED lamp, and the current regulator outputs stable DC power to the LED lamp; the rectifying and stabilizing module can be electrically connected to a protector and a power factor corrector, and a wireless The transmission module can be electrically connected with the rectification and voltage stabilization module and the LED light and receive a remote control signal. This design is to achieve the purpose of individual remote control dimming.

Chinese Patent No. 201851959U discloses an LED street lamp with an energy-saving sensing control device. The light controller of the host core module detects the brightness and darkness of the environment outside the light box through the photosensitive element, and outputs a signal to the power processor to switch or adjust the power. The LED multi-segment controller is powered by the editor of the host core module to process the detection signal of the radar sensor end. When objects (vehicles, people) approach dynamically from far to near within the long-distance detection range of the radar sensor, the voltage comparison is used to The processor processes the signal output by the editor, and triggers the LED multi-segment controller to control all LED light string light sources to emit light with high power to produce high-brightness lighting. This design can only achieve the purpose of detecting human body and automatic dimming of vehicles, but fails to achieve time-segmented control and other methods.

Chinese Patent No. 201001229 discloses a lamp capable of switching LEDs and lighting sources through switch control, including a main lighting source, lamp holder, electric control components, and multiple LEDs. The main lighting source and multiple LEDs are assembled at one end of the lamp holder. And electrically connected with the electric control component. The electronic control component includes a power supply, a control switch, and a microcomputer processing IC. One end of the control switch is connected to the power supply, and the other end is connected to the microcomputer processing IC. The two branches of the microcomputer processing IC are respectively connected to the main lighting source and LED; through the switch of the electronic control component Conversion control, which can make the main lighting source bright or LED bright/gradual or the main lighting source bright and LED bright/gradual. This design is to achieve the purpose of individual loop dimming.

Chinese Patent No. 201550338U discloses a remote control and management device for LED lighting system, which is characterized in that: the LED lighting control system is composed of LED lighting system connected with a single-chip controller, and the single-chip controller is connected with the digital transmitting station and PLC for control and management in sequence device, data transmission receiving station, data transmission management terminal, wireless AP and client connection. This design is a kind of purpose of reaching the remote control of individual.

Chinese Patent No. 102063786A discloses a remote control circuit for an LED device, which includes a transmitting unit, an infrared receiving head, a single-chip microcomputer, a transistor and a diode. The transmitting unit encodes and sends the user's dimming command, the infrared receiving head receives the coded signal and amplifies it, the single-chip microcomputer decodes the coded signal output by the infrared receiving head, the base of the transistor receives the decoded signal output by the single-chip microcomputer, and its emitter is grounded. The cathode of the diode is connected with the collector of the transistor, and its anode outputs the dimming signal. The user can stably adjust the brightness and color of the LED light source in the LED device at a remote location in the room by means of the remote control circuit to meet the indoor lighting requirements and realize humanized intelligent control, which is convenient to use and energy-saving. This design is to achieve the purpose of remote dimming, and has nothing to do with energy saving.

Chinese Patent No. 201764282U discloses an LED intelligent lighting device, including an LED lamp, a drive module connected to the LED lamp, an ambient brightness sensing module, an infrared human body sensing module, a control module composed of a single-chip microcomputer and its peripheral devices, and an ambient brightness The sensing module converts the brightness of the detected ambient light into electrical signals and inputs them to the single-chip microcomputer. The infrared human body sensing module is used to sense whether there are people in the environment, and transmits the sensing signal to the single-chip microcomputer. The single-chip microcomputer is based on the sensing signal of the infrared human body sensing module. The LED light is turned on or off through the driving module, and the brightness of the LED light is adjusted through the driving module according to the brightness information of the ambient light transmitted by the ambient brightness sensing module. This design is only to achieve the purpose of automatic dimming due to detection of human body.

Chinese Patent No. 201407550 discloses an intelligent lighting device for LED corridors controlled by a single-chip microcomputer, which can save energy by up to 80%. The device is equipped with a white LED lighting fixture, and the LED lighting fixture is covered with a high-transparency ceiling lampshade; The power of white LED lighting 2W can obtain the lighting effect of incandescent lamp 25W, which saves a lot of energy and has a long service life. Due to the use of Doppler induction sensing, there is no dead angle in the surrounding area. The single-chip control software is used to eliminate circuit interference, and the timing is accurate. Sleep energy saving, automatically wake up at night, safe and reliable lighting status control. Therefore, it is designed to adjust the output of a single lamp.

Chinese Patent No. 200990711 discloses a road lighting energy-saving control device for various road lighting circuits, including signal sampling and metering circuits, MCU, RTC circuits, reset circuits, power circuits, photoelectric isolation circuits, output control circuits, serial Communication circuit, keyboard input and LED display circuit. Its power supply circuit is powered by decentralized independent functional modules, which reduces the impact of grid voltage fluctuations on system stability. The addition of photoelectric isolation circuits eliminates the interference of instantaneous current on the MCU caused by the pull-in of relay contacts, and enhances the system. Work stability; increase manual detection circuit, generate manual detection control signal to control the relay module, convenient for on-site installation and debugging. Considered as a protective design for individual control devices.

Chinese Patent No. 201391781 discloses an energy-saving system for tunnel lamps, which includes a power supply device and several LED lamp groups connected to the power supply device, and is characterized in that the power supply device is connected to several LED lamp groups through an intelligent lamp control circuit , the lighting intelligent control circuit includes a main control circuit and a sub-control circuit, the input end of the main control circuit is connected to the power supply device, the signal output end is connected to the signal input end of the sub-control, and the output end of the sub-control is connected to the LED light group . This design is a remote lighting intelligent control circuit, which must be input from the remote.

From the previous disclosure of the existing device, it is not difficult to find that the existing LED lighting energy-saving control or dimming system still has improvements and improvements, such as the following many shortcomings.

1. Existing dimmable devices are used for traditional tungsten light bulbs or fluorescent lamps. Dimmable LED lamps are often used for dimming of a single lamp, regardless of whether it is controlled by the AC end or the DC end.

2. The existing constant current circuit is used to solve the problem of avoiding overheating of the LED and maintaining its life. The constant current mode is designed to protect the normal operation of the LED.

3. The existing automatic dimming circuit is often set to the light compensation mode to maintain a certain illuminance of the lamp, which cannot effectively save energy.

4. Existing computer and man-machine interface software can be used for dimmable lighting control systems, which will increase the wiring and engineering of the management system, and there is no application for energy-saving control of LED lights.

The utility model can improve the application and competitiveness of LED light source control and energy-saving technology. In order to achieve the purpose of saving energy and electricity in different situations, it is necessary. This is also the motivation of the invention of the utility model.

Utility model content

The main technical problem to be solved by the utility model is to overcome the above-mentioned defects in the prior art and provide an energy-saving control device for the lighting circuit of LED lamps. The utility model adopts a power converter with a high power factor to make the AC The electric power can be converted into other AC or DC power with high power factor, and used as the brightness control of the LED lamp group lighting, and the LED lamps and lamp groups used can be turned on, off or multi-stage according to the control command Brightness control to achieve the purpose of energy saving in different situations.

The technical scheme that the utility model solves its technical problem adopts is:

An energy-saving control device for an LED lamp lighting circuit, comprising:

at least one lighting circuit;

At least one AC-to-DC power conversion device, which provides AC-to-DC current and is connected to a lighting circuit;

At least one DC step-down and stabilizing device is connected to the AC-to-DC power conversion device through the lighting circuit to provide DC step-down and stabilizing;

At least one LED lamp is connected to the DC step-down and voltage stabilizing device through the lighting circuit, and it is optionally provided with grouped LED lamps and individual LED lamps in the lighting circuit to provide its brightness and illuminance value;

According to the settings of the AC to DC power conversion device, DC step-down, voltage stabilizing device, and LED lamps, the lighting circuit can actively provide LED lamps or individual LED lamps under the grouping of the lighting circuit to turn on or off or different brightness and illuminance, and save energy. electricity.

The energy-saving control device for the lighting circuit of LED lamps, wherein the AC-to-DC power conversion device includes at least one AC-to-DC power conversion unit for power conversion, voltage stabilization, and avoidance of lightning strikes and high-voltage surges; a microprocessor unit, For execution, processing of setting parameters, transmission of signals, memory storage, and communication; a sensor unit for processing signals returned by built-in or external sensors; a time control unit for reference time correction, time Time period parameter setting and connection with the microprocessor unit; a current control unit as the adjustment control of the DC current in the lighting circuit; a circuit control unit as the management of the number of lighting circuits.

The energy-saving control device for the lighting circuit of LED lamps, wherein the DC step-down and voltage-stabilizing device includes at least one DC step-down and voltage-stabilizing power unit, which is used for DC step-down and voltage-stabilizing power conversion, voltage stabilization, and avoiding lightning strikes and high-voltage surges; A microprocessor unit is used for execution, processing setting parameters, transmitting signals and storing memory; a sensor unit is used for processing signals returned by built-in or external sensors; a time control unit is used as a reference time Calibration, time period parameter setting, connection with the microprocessor unit; a current control unit, as the adjustment control of the DC current in the lighting circuit.

The LED lighting circuit energy-saving control device, wherein the LED lighting includes at least one LED unit, used as a lighting source for LEDs in series or parallel connection; a microprocessor unit, used to execute current control parameters or return signals in the lighting circuit; A current control unit, used to stabilize the voltage and adjust the output of the device or control the total current flow according to the control signal sent by the microprocessor unit; a sensing unit, used to process the signal returned by the built-in or external sensor; or a The communication unit is used for processing and transmitting control signal data; or a wireless communication unit is used for processing transmitting and receiving wireless control signal data.

The beneficial effect of the utility model is that, by adopting a power converter with a high power factor, the AC power provided by the original city power can be converted into other AC power or DC power with a higher high power factor, which can be used as the brightness of the LED lamp group lighting. Control the use, and the LED lamps and lamps used can be turned on, off or multi-stage brightness control according to the control command, so as to achieve the purpose of energy saving in different situations.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 is a system architecture diagram of the present utility model.

2A to 2E are the AC-to-DC power conversion device, the DC step-down voltage stabilizing device, LED lamps, LED lamps, and LED lamps of the present invention.

Fig. 3A is a diagram of an embodiment of the application of the LED lighting circuit energy-saving control device of the present invention.

FIG. 3B is a graph showing the relationship between power/lumens and time of the present invention.

Fig. 4A is a diagram of an embodiment of the application of the LED lighting circuit energy-saving control device of the present invention to multiple lighting circuits.

Fig. 4B and Fig. 4C are diagrams 1 and 2 of the relationship between power/lumens and time of the present utility model.

Fig. 5 is a diagram of an embodiment of the utility model LED lighting circuit energy-saving control device applied to the lighting circuit in the stairwell of a building.

6 is a diagram of an embodiment of the LED lighting circuit energy-saving control device of the present invention applied to multiple lighting circuits and using different load DC voltages.

Fig. 7 is a diagram of an embodiment of using a remote-controllable brightness LED lamp in the application of the LED lighting circuit energy-saving control device of the present invention.

Fig. 8A is a diagram of an embodiment in which the LED lighting circuit energy-saving control device of the present invention is applied to the full LED street lamp lighting circuit.

FIG. 8B is a graph showing the relationship between power/lumens and time of the present invention.

Explanation of symbols in the figure

10 LED lighting circuit energy-saving control device

100AC to DC power conversion device

101 lighting circuit

102 lighting circuit

103 lighting circuit

200DC step-down regulator

201 lighting circuit

202 lighting circuit

203 lighting circuit

300LED lamps

400LED lamps

500LED lamps

600 sensors

700 feedback loop

110AC to DC power conversion unit

120, 220, 310, 410, 510 microprocessor units

130, 230, 320 sensor units

140, 240 time control unit

150, 250, 330, 430, 530 current control unit

160, 260 loop unit

210 buck stabilized power unit

301 lamps

340, 440, 540 LED units

420 communication unit

520 wireless communication unit

610 infrared human body sensor

620 illumination sensor

640 pressure sensor

650 object proximity sensor

800 remote control terminal

Detailed ways

Please refer to Figure 1, which is a system architecture diagram of the present invention. In order to achieve the above-mentioned purpose, the present invention provides an LED lighting circuit energy-saving control device 10 that can be divided into groups and divided into DC drive voltages, including at least one AC A lighting circuit of a DC power conversion device 100 , a DC step-down regulator 200 , and an LED lamp 300 with a DC driving voltage. The AC-to-DC power conversion device 100 may have a lighting loop control unit to manage the loop current output of different DC driving voltages and the like. There may be a time control unit in the AC-to-DC power conversion device 100 or a DC step-down regulator 200 , for correction of reference time, setting of time period parameters, and connection with other units such as a microprocessor. A microprocessor unit, a current control unit, a sensor unit, and a time control unit may be included in the AC-to-DC power conversion device 100 or a DC step-down regulator device 200 or the LED lamp 300 . There may be LED units in the LED lamp 300 , and different DC driving voltage values will be obtained depending on the series and parallel connection of different LEDs. In the lighting circuit, the AC-to-DC power conversion device 100 or a DC step-down regulator device 200 or the LED lamp 300 may have a current control feedback circuit 700 or a signal communication unit for returning and receiving the operating status of the LED lamp. Therefore, according to the set time period parameters or the detection signal of the sensor 600 or the communication unit or the feedback loop 700, it is possible to actively control the opening or closing of the LED lamps or individual LED lamps under the lighting circuit grouping or partial different brightness illuminance. , Compared with full-power output and uncontrolled LED lamps, it must be able to effectively achieve the purpose of saving electricity.

In summary, please refer to Fig. 2A to Fig. 2E, the AC-to-DC power conversion device 100 of the present invention includes at least one AC-to-DC power conversion unit 110, which is used for power conversion, voltage stabilization, and avoidance of lightning strikes and high-voltage surges. Waves, etc.; a microprocessor unit 120, as execution, processing setting parameters, transmission signals and storage memory, etc.; a sensor unit 130, as processing signals returned by built-in or external sensors; a time The control unit 140 is used for the correction of the reference time, the setting of the time period parameters, and the connection with other units such as the microprocessor; a current control unit 150 is used for the adjustment control of the DC current in the lighting circuit, etc.; a loop control unit 160 as the management of the number of lighting circuits. The DC step-down and stabilizing device 200 in the present invention includes at least one DC step-down and stabilizing power unit 210, which is used for DC step-down and stabilizing power conversion, voltage stabilization, and avoiding lightning strikes and high-voltage surges. A microprocessor unit 220, as execution, processing setting parameters, transmission signals and storage memory, etc.; a sensor unit 230, as processing signals returned by built-in or external sensors; a time control unit 240 , used for correction of reference time, setting of time period parameters, and connection with other units such as a microprocessor; a current control unit 250, used for adjustment control of DC current in the lighting circuit, etc. According to different scenarios, LED lamps have different composition methods, as shown in Figure 2C, Figure 2D, and Figure 2E, the lamps can have a microprocessor unit, a current control unit and an LED unit, and other components such as the sensing unit 320, communication unit 420 or wireless communication unit 520, etc.

In the utility model, the control mode can be controlled according to the time, and the parameters of each lighting circuit can be set, such as time period, time segment, time multi-segment, circuit brightness illuminance, circuit ON/OFF, etc. can be set. The control mode can be based on the sensor control method, which can cooperate with the sensor to detect people, vehicles or moving objects, and control the LED light group according to the set conditions. The sensor can be an infrared sensor, a pressure sensor sensor, image sensor, sound sensor, temperature sensor and other sensors and their systems. Mix the above modes or use the above two control methods, you can use time control as a priority and sensor control as a supplement; or use sensor control as a priority and time control as a supplement, etc. Two-stage control can be used, first AC to DC power conversion, and then DC step-down to apply to LED lamps with different DC voltage values. Under one or more lighting circuits, the design of the control group and the circuit can make the lamp group controlled according to different setting conditions, because each microprocessor is used as the control of the current of different circuits. When there is an overcurrent, the microprocessor will provide circuit breaker protection. This safety design protects the LED lamps in the circuit. The LED lamp is equipped with a microprocessor unit and a communication unit, which can individually adjust the brightness of the LED lamp by the control signal of wireless communication and network communication. The current control unit outputs a stable current value so that the LED lamp can be controlled according to time and detected by the sensor. Adjust the appropriate illuminance value according to the test signal.

Please refer to FIG. 3A , which is a diagram of an embodiment of the application of the LED lighting circuit energy-saving control device of the present invention. The AC-to-DC power conversion device 100 is equipped with a reference time and is externally connected with an infrared human body sensor PIR610, and several LED lamps 300 using the same DC voltage value are connected in parallel in the lighting circuit. The AC current is converted to a DC voltage value capable of driving the LED lamp 300 . After the lighting circuit enters the controlled mode, it can be set according to the illuminance demand corresponding to the time parameter. During the set period, the current control unit 150 in the AC to DC power conversion device 100 will adjust the current output value, such as maintaining During the period t ₀ to t ₁ of higher brightness, after t ₁ , the current control unit 330 in the LED lamp 300 lowers the load current of the LED lamp 300 . Under this constant current, the brightness of the LED lamp is adjusted accordingly. In another scenario, the controlled luminance of the LED lamp 300 maintains a relatively low value during the period from _t1 to _t2 , but a signal is detected by the external infrared human body sensor PIR610, and after being sent back to the sensor unit 130, it is controlled by the microprocessor The device unit 120 calculates and notifies the current control unit 150 to adjust the output current, so that the LED lamp 300 can immediately return to a higher brightness during the period _t2 to _t3 . After ₃ , the LED lamp 300 is controlled and then returns to a lower brightness (as shown in FIG. 3B ).

Please refer to FIG. 4A , which is an embodiment diagram of the LED lighting circuit energy-saving control device of the present invention applied to multiple lighting circuits. If applied to a parking lot, the AC-to-DC power conversion device 100 is divided into two lighting circuits by the circuit unit 160 , each represented by 1F and B1 . Each of the two circuits has the same DC step-down regulator 200 , and several LED lamps 300 are used in parallel. However, due to the different characteristics of the sub-regions, an illuminance sensor 620 is connected externally to 1F. When external light shines in during the daytime, in order to provide a legally reasonable illuminance value, the sensor returns the detected illuminance through DC The microprocessor unit 220 in the buck regulator device 200 calculates and informs the current control unit 250 to adjust the output current, so as to maintain a constant total illuminance in the region during a time period. For example, the controlled luminance of the LED lamp 300 maintains a relatively high value during the period from t ₁ to t ₂ , but the brightness value of the LED lamp can be reduced due to the high illuminance provided by the outside. The illuminance sensor 620 sends back signals at regular intervals. For example, during the original period from _t3 to _t5 , the LED lamp 300 increases brightness first when the exterior is too dark after _t3 . If the external brightness increase value is high after _t5 , then The LED lamp 300 is adjusted by the current control unit 250 to output a lower current to have a lower brightness, but maintain a fixed total illuminance in the area (as shown in FIG. 4B ). And for the B1 lighting loop externally connected with an infrared human body sensor 610, this lighting loop is controlled according to the time period as a priority, when the number of people and vehicles entering and leaving at a specific time decreases, the brightness of the LED lamp 300 is first reduced. For example, the controlled luminance of the LED lamp 300 maintains a relatively low value during the period from _t1 to _t2 , but because the external infrared human body sensor PIR610 detects a signal, after being sent back to the sensor unit 230, the microprocessor unit 220 The calculation notifies the current control unit 250 to adjust the output current, so that the LED lamp 300 can immediately return to a higher brightness during the time period _{from t2} to _t3 . Afterwards, the LED lamp 300 is controlled to return to a lower brightness (as shown in FIG. 4C ).

Please refer to FIG. 5 , which is a diagram of an embodiment of the LED lighting circuit energy-saving control device of the present invention applied to the lighting circuit in the stairwell of a building. The AC-to-DC power conversion device 100 converts the AC current into a high DC current value, and then steps down the voltage to the operating voltage of the LED lamps 300 on each floor through the DC step-down and stabilization device 200 . For each floor, an infrared human body sensor 610 can be connected externally. The control of this lighting circuit is prioritized according to the time period. A signal, after being sent back to the sensor unit 330 in the LED lamp 300, is calculated by the microprocessor unit 320 and notified the current control unit 330 to adjust the output current. The infrared human body sensors 610 on each floor layer or partition will return signals to adjust the brightness of the LED lamps 300 . After the signal source of the sensor disappears and no one enters or exits after a waiting time, the LED lamp 300 is controlled and then drops back to a lower brightness.

Please refer to FIG. 6 , which is an embodiment diagram of the LED lighting circuit energy-saving control device of the present invention applied to multiple lighting circuits and using different load DC voltages. If it is applied to a building lobby or aisle corridor, the AC to DC power conversion device 100 is divided into two lighting circuits by the circuit unit 160, and each of the two circuits has a different DC step-down regulator 200 and DC step-down The stabilized power unit 210 uses several LED lamps 300 and LED lamps 301 in parallel for each circuit. Controlled by time segments, each circuit has different use situation requirements, the brightness of each circuit LED lamp can be based on the AC to DC power conversion device 100 or DC step-down regulator 200 or DC step-down regulator power unit 210 Microprocessor unit setting control.

Please refer to FIG. 7 , which is an embodiment diagram of an LED lamp with brightness controlled by remote control used in the application of the LED lighting circuit energy-saving control device of the present invention. The AC-to-DC power conversion device 100 converts the AC current to a high DC current value, and then steps down the voltage to the operating voltage of the LED lamps on each floor through the DC step-down and voltage stabilization device 200. Several lamps using the same DC voltage value are connected in parallel in the lighting circuit. LED lamps 500. After the lighting circuit enters the controlled mode, it can be set according to the illuminance requirements corresponding to the time parameters and adjusted over time. However, some specific places need to adjust the brightness of the place dynamically and in real time, so the LED lamp 500 has a wireless remote control receiving function. The device 200 or the AC-to-DC power conversion device 100 adjusts the current output value to meet the usage situation.

Please refer to FIG. 8A , which is an embodiment diagram of an LED lighting circuit energy-saving control device of the present invention applied to a full LED street lamp lighting circuit. The AC-to-DC power conversion device 100 converts the AC current into a high DC current value, and then steps down the voltage to the LED lamp operating voltage of each LED street lamp through the DC step-down and regulator device 200 . In consideration of the safety factor, a backup device can be provided for the AC-to-DC power conversion device 100 or the DC step-down regulator device 200, so as to avoid failure of the lighting circuit due to equipment failure. In this embodiment, the DC step-down regulator 220 is used as a backup device in case of emergency. On each lane, several pressure sensors 640 or object proximity sensors 650 are externally connected to detect various vehicles approaching from different lanes. And because the street lights can be managed by the remote monitoring center, so the device of this lighting circuit can have a communication unit, as the return of the operation status, this embodiment adopts the LED lamp 400 with the communication unit, and the remote monitoring center can monitor whether each LED lamp 400 is working normally. In addition, this lighting circuit is prioritized according to time period control. When the number of vehicles entering and exiting decreases at a specific time, the brightness of the LED lamp 400 is first reduced. However, a signal detected by the pressure sensor 640 or the object proximity sensor 650 is sent back to the AC. After switching to the DC power conversion device 100, the microprocessor unit 120 calculates and informs the current control unit 150 to adjust the output current. Therefore, the brightness of the LED lamps 400 corresponding to each lane increases accordingly. After the signal source of the sensor disappears and there is still no vehicle entering or exiting after a waiting period, the LED lamp 400 is controlled and then drops back to a lower brightness. If there is driving, the brightness of the LED lamp 400 can be increased again, and if there is still no vehicle entering or leaving after a waiting period, the brightness of the LED lamp 400 can be reduced to a lower level to achieve better energy saving, [as shown in Figure 8B 】.

Advantage of the utility model:

1. The LED lighting circuit energy-saving control device of the utility model can realize the energy-saving effect of one or more LED lighting circuits under automatic control.

2. The LED lighting circuit energy-saving control device of the utility model is applicable to LED lamps driven by DC voltages of different designs. Contains mechanisms such as constant current limiting, which can still ensure the normal operation of LED lights.

3. There is no need for a computer and man-machine interface software to perform dimmable lighting control. The LED lighting circuit energy-saving control device of the utility model has a time control method and can cooperate with different sensors to achieve better energy-saving control benefits.

4. With a lighting circuit energy-saving control device and method using all LED lamps, the new application and competitiveness of this green and environment-friendly light source are greatly improved.

The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the utility model, All still belong to within the scope of the technical solution of the utility model.

In summary, the utility model fully meets the needs of industrial development in terms of structural design, practicability and cost-effectiveness, and the disclosed structure also has an unprecedented innovative structure, novelty, creativity and practicability, and meets the needs of industrial development. According to the requirements of the new patent requirements, the application is filed in accordance with the law.

Claims (4)

1. a LED lamp lighting loop energy-saving control device is characterized in that, comprising:

At least one lighting loop;

At least one AC changes the DC power inverter, AC commentaries on classics DC electric current is provided and is connected with lighting loop;

At least one DC lowering and stabilizing blood pressure device is borrowed lighting loop and AC to change the DC power inverter and is connected, so that DC to be provided lowering and stabilizing blood pressure;

At least one LED light fixture borrows lighting loop to be connected with DC lowering and stabilizing blood pressure device, and its selectivity is provided with hive off LED light fixture and indivedual LED light fixture in lighting loop, so that its shading value and brightness value to be provided.

2. LED lamp lighting according to claim 1 loop energy-saving control device is characterized in that, said AC changes the DC power inverter, comprises that at least one AC changes the DC power conversion unit, as power conversions, voltage stabilizing, avoid thunderbolt and high pressure surging; One microprocessor unit is as carrying out, handle setup parameter, transmission signal and storing memory, communication; One sensor unit is built or signal that external sensor returned as handling by interior; One time control unit, the setting of the correction of time as a reference, period time parameter, with the linking of microprocessor unit; One current control unit is as the adjustment control of the DC magnitude of current in the lighting loop; One circuit controls unit is as the management of lighting loop quantity.

3. LED lamp lighting according to claim 1 loop energy-saving control device; It is characterized in that; Said DC lowering and stabilizing blood pressure device comprises at least one DC lowering and stabilizing blood pressure power unit, is made for to DC lowering and stabilizing blood pressure power conversions, voltage stabilizing, avoids thunderbolt and high pressure surging; One microprocessor unit is as carrying out, handle setup parameter, transmission signal and storing memory; One sensor unit is built or signal that external sensor returned as handling by interior; One time control unit, the setting of the correction of time as a reference, period time parameter, with the linking of microprocessor unit; One current control unit is as the adjustment control of the DC magnitude of current in the lighting loop.

4. LED lamp lighting according to claim 1 loop energy-saving control device is characterized in that said LED light fixture comprises at least one LED unit, as the lighting source of LED serial or parallel connection; One microprocessor unit is as carrying out current control parameter or passback signal usefulness in the lighting loop; One current control unit spreads out of output of controlling signal adjusting device or Control current total flow as voltage stabilizing and by microprocessor unit; One sensing cell is built or signal that external sensor returned as handling by interior; Or a communication unit, as handling the transmitting control signal data; Or a radio communication unit, as handling emission transmitting/receiving wireless controlling signal data.

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