CN105517225A - Energy-saving control system of intelligent LED lamp - Google Patents
Energy-saving control system of intelligent LED lamp Download PDFInfo
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- CN105517225A CN105517225A CN201510923315.8A CN201510923315A CN105517225A CN 105517225 A CN105517225 A CN 105517225A CN 201510923315 A CN201510923315 A CN 201510923315A CN 105517225 A CN105517225 A CN 105517225A
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/10—Controlling the intensity of the light
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
Abstract
The invention discloses an energy-saving control system of an intelligent LED lamp. The control system is mainly composed of a single-chip microcomputer, a switch circuit and a brightness sensor which are both connected with the single-chip microcomputer, a power supply, and an LED lamp connected with the switch circuit. The control system is characterized in that a voltage rectification filtering protection circuit is also connected in series between the power supply and the single-chip microcomputer, and the voltage rectification filtering protection circuit is composed of a rectification filtering circuit, a voltage buffer circuit connected with the rectification filtering circuit and a bootstrap voltage stabilizing circuit connected with the voltage buffer circuit. The energy-saving control system of the intelligent LED lamp can effectively control the brightness of the LED lamp according to different brightens of an environment, the driving capability of a driving system for the LED lamp is quite high, energy consumption is low, and energy-saving requirement of people for the LED lamp can be met.
Description
Technical field
The present invention relates to the control system of intelligent electronic device, what be specifically related to is a kind of energy-saving control system of Intelligent LED lamp.
Background technology
At present, LED, as novel energy-conserving light source, with its environmental protection, the feature such as energy-conservation, the life-span is long, volume is little, is extensively received by people and adopts.Along with people's living standard constantly improves, no matter have higher requirement to LED brightness and energy consumption at home or in shop, namely people need, while improving LED brightness further, to need LED to have lower energy consumption.So people just have higher requirement in energy-conservation to LED.
But, the LED that current people use, due to stability of control system difference and the brightness of the LED that cannot control effectively according to different ambient brightnesss, and the drive current exported can not regulate the different demands of LED brightness according to people, cause a large amount of energy wastes, thus people can not be met to the requirement of LED in energy-conservation.
Summary of the invention
The LED that the object of the invention is to overcome prior art due to stability of control system difference and the defect of the brightness of the LED that cannot control effectively according to different ambient brightnesss, provides a kind of energy-saving control system of Intelligent LED lamp.
The present invention is achieved through the following technical solutions: a kind of energy-saving control system of Intelligent LED lamp, primarily of single-chip microcomputer, and power supply, the switching circuit be all connected with single-chip microcomputer, brightness impression device, and the LED be connected with switching circuit forms; Simultaneously; voltage commutation filter protective circuit is serially connected with between power supply and single-chip microcomputer; described voltage commutation filter protective circuit is then by the current rectifying and wave filtering circuit be connected with power supply; the voltage buffer circuit be connected with current rectifying and wave filtering circuit, and the bootstrapping voltage stabilizing circuit be connected with this voltage buffer circuit forms.
Described current rectifying and wave filtering circuit by diode rectifier U, resistance R1, fuse FU, and the polar capacitor C1 that positive pole is connected with the cathode output end of diode rectifier U, negative pole is connected with the cathode output end of diode rectifier U forms; One of them input of described diode rectifier U forms an input of current rectifying and wave filtering circuit after fuse FU, another input of this diode rectifier U forms another input of current rectifying and wave filtering circuit after resistance R1, and two inputs of described current rectifying and wave filtering circuit are all connected with power supply; The cathode output end of described diode rectifier U jointly forms the output of current rectifying and wave filtering circuit with cathode output end and is connected with voltage buffer circuit.
Described voltage buffer circuit is by triode VT4, detection chip U1, P pole is connected with the cathode output end of diode rectifier U after resistance R4, N pole is in turn through diode D1 that resistance R6 is connected with the SOU pin of detection chip U1 after resistance R3 and polar capacitor C3, P pole is connected with the VC pin of detection chip U1 after polar capacitor C2, the diode D2 that N pole is connected with the base stage of triode VT4, positive pole is connected with the CS2 pin of detection chip U1, the polar capacitor C4 that negative pole is connected with the CS1 pin of detection chip U1 after resistance R5, one end is connected with the GND pin of detection chip U1, the resistance R2 of other end ground connection, N pole is connected with the N pole of diode D1, the diode D3 that P pole is connected with the DA pin of detection chip U1, one end is connected with the N pole of diode D3, the other end is as the resistance R10 of one of them output point of voltage buffer circuit, and negative pole after resistance R11 as another output point of voltage buffer circuit, the polar capacitor C5 that positive pole is connected with the SW pin of detection chip U1 forms, the collector electrode of described triode VT4 is connected with the cathode output end of diode rectifier U, its emitter is connected with the negative pole of polar capacitor C4, the LN pin of described detection chip U1 is connected with the P pole of diode D2, its DR pin is connected with the P pole of diode D3.
Described bootstrapping voltage stabilizing circuit is by voltage stabilizing chip U2, triode VT1, triode VT2, triode VT3, field effect transistor MOS, P pole is connected with the IN pin of voltage stabilizing chip U2, the diode D4 that N pole is connected with the collector electrode of triode VT1, P pole is connected with the base stage of triode VT1 after adjustable resistance R7, the diode D5 that N pole is connected with the base stage of triode VT2, positive pole is connected with the emitter of triode VT2, the polar capacitor C6 that negative pole is connected with the source electrode of field effect transistor MOS, positive pole is connected with the source electrode of field effect transistor MOS, negative pole jointly forms the polar capacitor C7 of the output of bootstrapping voltage stabilizing circuit after resistance R8 with the OUT pin of voltage stabilizing chip U2, P pole is connected with the emitter of triode VT1, the diode D6 that N pole is connected with the negative pole of polar capacitor C7, one end is connected with the source electrode of field effect transistor MOS, the resistance R9 of other end ground connection, and positive pole is connected with the SW pin of voltage stabilizing chip U2, the polar capacitor C8 that negative pole is connected with the base stage of triode VT3 forms, the grounded collector of described triode VT2, the grid of described field effect transistor MOS is connected with the negative pole of polar capacitor C5 after resistance R11, it drains and to be connected with the base stage of triode VT1, the emitter of described triode VT3 is connected with the emitter of triode VT1, its grounded collector, the IN pin of described voltage stabilizing chip U2 is connected with the N pole of diode D3 after resistance R10.
For guaranteeing practical effect of the present invention, described detection chip U1 preferentially adopts AX2002 integrated chip to realize, and voltage stabilizing chip U2 then preferentially adopts T4115 integrated chip to realize.
The present invention compared with prior art has the following advantages and beneficial effect:
(1) present invention employs brightness impression device, this inductor has the advantages such as highly sensitive, controllability is strong, the brightness value that sense collects can also be converted to the luminance signal of available output, thus ensure that the energy-saving control system of this Intelligent LED lamp can export different electric currents according to the brightness change of indoor, thus can effectively reduce the energy resource consumption of LED.
(2) voltage commutation filter protective circuit of the present invention effectively can carry out rectifying and wave-filtering to supply voltage; can also detect supply voltage, overvoltage protection, overheat protector; and stable 12V direct voltage can be provided for the single-chip microcomputer of energy-saving control system of the present invention, because this ensure that the certainty of single-chip microcomputer work.
(3) overall structure of the present invention is simple, not only makes and very easy to use, and stability is high.
Accompanying drawing explanation
Fig. 1 is overall structure block diagram of the present invention.
Fig. 2 is the electrical block diagram of voltage commutation filter protective circuit of the present invention.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiment
As shown in Figure 1, the present invention by single-chip microcomputer, power supply, the switching circuit be all connected with single-chip microcomputer, brightness impression device, the LED be connected with switching circuit, and be serially connected between power supply and single-chip microcomputer voltage commutation filter protective circuit composition.Wherein, as shown in Figure 2, it is by the current rectifying and wave filtering circuit be connected with power supply, the voltage buffer circuit be connected with current rectifying and wave filtering circuit for the structure of this voltage commutation filter protective circuit, and the bootstrapping voltage stabilizing circuit be connected with this voltage buffer circuit forms.
Wherein, described current rectifying and wave filtering circuit by diode rectifier U, resistance R1, fuse FU, and the polar capacitor C1 that positive pole is connected with the cathode output end of diode rectifier U, negative pole is connected with the cathode output end of diode rectifier U forms; One of them input of described diode rectifier U forms an input of current rectifying and wave filtering circuit after fuse FU, another input of this diode rectifier U forms another input of current rectifying and wave filtering circuit after resistance R1, and two inputs of described current rectifying and wave filtering circuit are all connected with power supply; The cathode output end of described diode rectifier U jointly forms the output of current rectifying and wave filtering circuit with cathode output end and is connected with voltage buffer circuit.
For guaranteeing reliability service of the present invention, described single-chip microcomputer preferentially adopts LT3474 single-chip microcomputer to realize.The REF pin of this LT3474 single-chip microcomputer is connected with brightness impression device, and PWM pin is connected with switching circuit.Described power supply is 220V alternating current, and this 220v alternating current exports 12V direct voltage after carrying out rectifying and wave-filtering by voltage commutation filter protective circuit, and this 12V direct voltage is that single-chip microcomputer is powered.
As shown in Figure 2, this voltage buffer circuit by triode VT4, detection chip U1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R10, resistance R11, polar capacitor C2, polar capacitor C3, polar capacitor C4, polar capacitor C5, diode D1, diode D2, and diode D3 forms.
During connection, the P pole of diode D1 is connected with the cathode output end of diode rectifier U after resistance R4, its N pole is connected with the negative pole of polar capacitor C3 after resistance R3 through resistance R6 in turn, and the positive pole of described polar capacitor C3 is then connected with the SOU pin of detection chip U1.The N pole of diode D2 is connected with the base stage of triode VT4, its P pole is connected with the negative pole of polar capacitor C2, and the positive pole of described polar capacitor C2 is then connected with the VC pin of detection chip U1.The positive pole of polar capacitor C4 is connected with the CS2 pin of detection chip U1, negative pole is connected with the CS1 pin of detection chip U1 after resistance R5.One end of resistance R2 is connected with the GND pin of detection chip U1, other end ground connection.
Wherein, the N pole of diode D3 is connected with the N pole of diode D1, P pole is connected with the DA pin of detection chip U1.One end of resistance R10 is connected with the N pole of diode D3, the other end is connected with bootstrapping voltage stabilizing circuit.The negative pole of polar capacitor C5 is connected with bootstrapping voltage stabilizing circuit after resistance R11, positive pole is connected with the SW pin of detection chip U1.The collector electrode of described triode VT4 is connected with the cathode output end of diode rectifier U, its emitter is connected with the negative pole of polar capacitor C4; The LN pin of described detection chip U1 is connected with the P pole of diode D2, its DR pin is connected with the P pole of diode D3.In order to better implement the present invention, described detection chip U1 is AX2002 integrated chip, and this chip performance is stable, low price.
Meanwhile, described bootstrapping voltage stabilizing circuit is by voltage stabilizing chip U2, triode VT1, triode VT2, triode VT3, field effect transistor MOS, adjustable resistance R7, resistance R8, resistance R9, diode D4, diode D5, diode D6, polar capacitor C6, polar capacitor C7, and polar capacitor C8 forms.
During connection, the P pole of diode D4 is connected with the IN pin of voltage stabilizing chip U2, N pole is connected with the collector electrode of triode VT1.The P pole of diode D5 is connected with the base stage of triode VT1 after adjustable resistance R7, N pole is connected with the base stage of triode VT2.The positive pole of polar capacitor C6 is connected with the emitter of triode VT2, negative pole is connected with the source electrode of field effect transistor MOS.The positive pole of polar capacitor C7 is connected with the source electrode of field effect transistor MOS, negative pole is connected with the VC pin of LT3474 integrated chip after resistance R8.The P pole of diode D6 is connected with the emitter of triode VT1, N pole is connected with the negative pole of polar capacitor C7.One end of resistance R9 is connected with the source electrode of field effect transistor MOS, other end ground connection.The positive pole of polar capacitor C8 is connected with the SW pin of voltage stabilizing chip U2, negative pole is connected with the base stage of triode VT3.
The grounded collector of described triode VT2; The grid of described field effect transistor MOS is connected with the negative pole of polar capacitor C5 after resistance R11, it drains and to be connected with the base stage of triode VT1; The emitter of described triode VT3 is connected with the emitter of triode VT1, its grounded collector; The IN pin of described voltage stabilizing chip U2 is connected with the N pole of diode D3 after resistance R10; The described OUT pin of voltage stabilizing chip U2 is connected with the VIN pin of LT3474 integrated chip.
In order to better implement the present invention, described voltage stabilizing chip U2 is T4115 integrated chip, and this chip has the advantage such as overvoltage and overtemperature protection.Meanwhile, brightness impression device of the present invention have employed APDS-9002 brightness impression device, and the accuracy that this APDS-9002 brightness impression device gathers luminance signal is strong.Described brightness impression device is for gathering the luminance signal of LED working region, and gathered luminance signal can be converted to current signal transfer to single-chip microcomputer by this brightness impression device.Single-chip microcomputer then in store brightness reference point, export corresponding control signal to switching circuit after comparing to the brightness value stored after the current signal that brightness impression device transmits is converted to data-signal by this single-chip microcomputer, switching circuit then exports the brightness of corresponding electric current to LED according to the different control signal of single-chip microcomputer transmission and regulates.Switching circuit in the present invention is prior art.
When the brightness value of the LED working region that brightness impression device collects is higher than the brightness value stored in single-chip microcomputer, single-chip microcomputer output LOW current control signal is to switching circuit, now, switching circuit then exports corresponding low current according to the low current control signal of single-chip microcomputer transmission, makes the brightness of LED consistent with the brightness value stored in single-chip microcomputer.Otherwise, when the brightness value of the LED working region that brightness impression device collects is lower than the brightness value stored in single-chip microcomputer, single-chip microcomputer output HIGH current control signal is to switching circuit, now, switching circuit then exports corresponding high electric current according to the high current controling signal of single-chip microcomputer transmission, makes the brightness of LED consistent with the brightness value stored in single-chip microcomputer.
Therefore, the energy-saving control system of LED of the present invention the change of environmentally brightness can export different electric currents, thus achieves people to the requirement of LED in energy-conservation.
As mentioned above, just the present invention can well be realized.
Claims (5)
1. an energy-saving control system for Intelligent LED lamp, primarily of single-chip microcomputer, power supply, the switching circuit be all connected with single-chip microcomputer, brightness impression device, and the LED be connected with switching circuit forms; It is characterized in that: between power supply and single-chip microcomputer, be serially connected with voltage commutation filter protective circuit; described voltage commutation filter protective circuit is then by the current rectifying and wave filtering circuit be connected with power supply; the voltage buffer circuit be connected with current rectifying and wave filtering circuit, and the bootstrapping voltage stabilizing circuit be connected with this voltage buffer circuit forms.
2. the energy-saving control system of a kind of Intelligent LED lamp according to claim 1, it is characterized in that, described current rectifying and wave filtering circuit is by diode rectifier U, resistance R1, fuse FU, and the polar capacitor C1 that positive pole is connected with the cathode output end of diode rectifier U, negative pole is connected with the cathode output end of diode rectifier U forms; One of them input of described diode rectifier U forms an input of current rectifying and wave filtering circuit after fuse FU, another input of this diode rectifier U forms another input of current rectifying and wave filtering circuit after resistance R1, and two inputs of described current rectifying and wave filtering circuit are all connected with power supply; The cathode output end of described diode rectifier U jointly forms the output of current rectifying and wave filtering circuit with cathode output end and is connected with voltage buffer circuit.
3. the energy-saving control system of a kind of Intelligent LED lamp according to claim 2, it is characterized in that, described voltage buffer circuit is by triode VT4, detection chip U1, P pole is connected with the cathode output end of diode rectifier U after resistance R4, N pole is in turn through diode D1 that resistance R6 is connected with the SOU pin of detection chip U1 after resistance R3 and polar capacitor C3, P pole is connected with the VC pin of detection chip U1 after polar capacitor C2, the diode D2 that N pole is connected with the base stage of triode VT4, positive pole is connected with the CS2 pin of detection chip U1, the polar capacitor C4 that negative pole is connected with the CS1 pin of detection chip U1 after resistance R5, one end is connected with the GND pin of detection chip U1, the resistance R2 of other end ground connection, N pole is connected with the N pole of diode D1, the diode D3 that P pole is connected with the DA pin of detection chip U1, one end is connected with the N pole of diode D3, the other end is as the resistance R10 of one of them output point of voltage buffer circuit, and negative pole after resistance R11 as another output point of voltage buffer circuit, the polar capacitor C5 that positive pole is connected with the SW pin of detection chip U1 forms, the collector electrode of described triode VT4 is connected with the cathode output end of diode rectifier U, its emitter is connected with the negative pole of polar capacitor C4, the LN pin of described detection chip U1 is connected with the P pole of diode D2, its DR pin is connected with the P pole of diode D3.
4. the energy-saving control system of a kind of Intelligent LED lamp according to claim 3, it is characterized in that, described bootstrapping voltage stabilizing circuit is by voltage stabilizing chip U2, triode VT1, triode VT2, triode VT3, field effect transistor MOS, P pole is connected with the IN pin of voltage stabilizing chip U2, the diode D4 that N pole is connected with the collector electrode of triode VT1, P pole is connected with the base stage of triode VT1 after adjustable resistance R7, the diode D5 that N pole is connected with the base stage of triode VT2, positive pole is connected with the emitter of triode VT2, the polar capacitor C6 that negative pole is connected with the source electrode of field effect transistor MOS, positive pole is connected with the source electrode of field effect transistor MOS, negative pole jointly forms the polar capacitor C7 of the output of bootstrapping voltage stabilizing circuit after resistance R8 with the OUT pin of voltage stabilizing chip U2, P pole is connected with the emitter of triode VT1, the diode D6 that N pole is connected with the negative pole of polar capacitor C7, one end is connected with the source electrode of field effect transistor MOS, the resistance R9 of other end ground connection, and positive pole is connected with the SW pin of voltage stabilizing chip U2, the polar capacitor C8 that negative pole is connected with the base stage of triode VT3 forms, the grounded collector of described triode VT2, the grid of described field effect transistor MOS is connected with the negative pole of polar capacitor C5 after resistance R11, it drains and to be connected with the base stage of triode VT1, the emitter of described triode VT3 is connected with the emitter of triode VT1, its grounded collector, the IN pin of described voltage stabilizing chip U2 is connected with the N pole of diode D3 after resistance R10.
5. the energy-saving control system of a kind of Intelligent LED lamp according to claim 4, is characterized in that, described detection chip U1 is AX2002 integrated chip; Described voltage stabilizing chip U2 is T4115 integrated chip.
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| CN201510923315.8A CN105517225A (en) | 2015-12-11 | 2015-12-11 | Energy-saving control system of intelligent LED lamp |
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| CN201510923315.8A CN105517225A (en) | 2015-12-11 | 2015-12-11 | Energy-saving control system of intelligent LED lamp |
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Cited By (1)
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