CN203934081U - LED lamp drive circuit with light-operated timing - Google Patents
LED lamp drive circuit with light-operated timing Download PDFInfo
- Publication number
- CN203934081U CN203934081U CN201420367090.3U CN201420367090U CN203934081U CN 203934081 U CN203934081 U CN 203934081U CN 201420367090 U CN201420367090 U CN 201420367090U CN 203934081 U CN203934081 U CN 203934081U
- Authority
- CN
- China
- Prior art keywords
- drive circuit
- led lamp
- control chip
- power supply
- light
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
With a LED lamp drive circuit for light-operated timing, the output of its control circuit is connected with the input of drive circuit, and the output of drive circuit is used for connecting LED lamp; Switching Power Supply is to control circuit and drive circuitry.Control circuit comprises control chip, crystal oscillator, trigger switch, the power positive end of control chip is connected with the positive pole of Switching Power Supply by voltage stabilizing circuit, the two ends of crystal oscillator are connected to two clock signal terminals of control chip, and the two ends of trigger switch are connected between the trigger end and ground of control chip; The output of control chip is connected with the input of described drive circuit; Between input of control chip and ground, be connected a light sensor.The utility model has the advantages that: the utility model can Intelligent light-sensitive according to luminous environment automatic identification whether start shooting, self-timing after start, full automatic shutdown after some hours of time, due to light-operated and double action time control, makes that the utility model product is more intelligent, energy-saving and environmental protection.
Description
Technical field
The utility model relates to a kind of LED lamp drive circuit with light-operated timing, is mainly used in the driving power of the illumination of LED lamp, LED indication, LED lamp string etc.
Background technology
Under the background that Present Global energy starved worry raises once again, energy savings is the important problem that we shall face future, and at lighting field, the application of LED luminous product is just attracting common people's sight, LED, as a kind of novel green light source product, must be the trend of future development.Along with social development and the raising of intellectual technology, people's living standard improves, city lighting illumination has become a requisite part in people's life with Colour lamp for fastival and holiday, the bright time of former lamp is a whole night or turns off after midnight by Artificial Control, very waste and inconvenient.
Summary of the invention
The utility model object is to provide a kind of LED lamp drive circuit with light-operated timing, with what solve that prior art exists, by Artificial Control, turns off after midnight power supply, very inconvenient; If be not related to power supply, cause the problem of power wastage.
The technical solution of the utility model is: a kind of LED lamp drive circuit with light-operated timing, comprise Switching Power Supply, control circuit and drive circuit, and the output of control circuit is connected with the input of drive circuit, and the output of drive circuit is used for connecting LED lamp; Switching Power Supply is to control circuit and drive circuitry, it is characterized in that, described control circuit comprises control chip, crystal oscillator, trigger switch, the power positive end of control chip is connected with the positive pole of Switching Power Supply by a voltage stabilizing circuit, the two ends of crystal oscillator are connected to two clock signal terminals of control chip, and the two ends of trigger switch are connected between the trigger end and ground of control chip; One or two output of control chip is connected with the input of described drive circuit; Between input of control chip and ground, be connected a light sensor.
The utility model has the advantages that: the utility model can Intelligent light-sensitive according to luminous environment automatic identification whether start shooting, self-timing after start, full automatic shutdown after some hours of time, due to light-operated and double action time control, makes that this novel product is more intelligent, energy-saving and environmental protection.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of the first embodiment of the present utility model;
Fig. 2 is the circuit theory diagrams of the second embodiment of the present utility model; ;
Fig. 3 is the circuit theory diagrams of the 3rd embodiment of the present utility model.
Embodiment
Referring to Fig. 1～Fig. 3, a kind of LED lamp drive circuit with light-operated timing of the utility model, comprise Switching Power Supply 1, control circuit 2, voltage stabilizing circuit 3 and drive circuit 4, the output of control circuit 2 is connected with the input of drive circuit 4, and the output of drive circuit 4 is used for connecting LED lamp; Switching Power Supply 1 is directly drive circuit 4 power supplies, and gives control circuit 2 power supplies by voltage stabilizing circuit 3.
Described control circuit 2 comprises control chip U2, crystal oscillator XL1, trigger switch SW, the power positive end of control chip U2 is connected with the positive pole of Switching Power Supply 1 by a voltage stabilizing circuit 3, the two ends of crystal oscillator XL1 are connected to two clock signal terminals of control chip U2, and the two ends of trigger switch SW are connected between the trigger end and ground of control chip U2; One or two output of control chip U2 is connected with the input of described drive circuit 4; Between input of control chip U2 and ground, be connected a light sensor Rg.
Described voltage stabilizing circuit 3 is comprised of voltage regulation resistance R8, electric capacity of voltage regulation C6 and voltage stabilizing didoe ZD1, the upper end of voltage regulation resistance R8 is connected with the cathode output end of this Switching Power Supply 1, electric capacity of voltage regulation C6 and voltage stabilizing didoe ZD1 are connected in parallel between the lower end and ground of voltage regulation resistance R8, and voltage stabilizing didoe ZD1 is Opposite direction connection (being plus earth); The lower end of voltage regulation resistance R8 is also connected with the power positive end of control chip U2.
Described Switching Power Supply 1 preferably adopts single-ended reverse exciting contactor power supply, and the control chip U1 of this Switching Power Supply 1 adopts PWM integrated circuit.Switching Power Supply 1 also can adopt common DC power supply or battery.
Described control chip U2 is adopted as single-chip microcomputer or LED controls application-specific integrated circuit (ASIC), two outputs of control chip U2 (6,7 pin) are sent rectangular pulse signal and are removed to control described drive circuit 4, the every triggering of trigger switch SW once, the duty ratio of control chip U2 output rectangular pulse signal just changes once, makes LED lamp illumination effect that corresponding change occur.
The Main Function of described Switching Power Supply 1 is to convert safety low-voltage to for the utility model provides high pressure civil power.Its operation principle is: AC power AC is from input terminal ACIN input, and by resistance fuse FR1, process rectifier bridge BD1 rectification and the pi type filter filtering being comprised of capacitor C 1, inductance L 1 and capacitor C 2, reduce differential mode and common mode disturbances, and direct voltage is provided.By resistance R 2, R3, to capacitor C 5, charge, for the vdd terminal of chip U1 provides voltage, the driving of chip U1 is opened, at this moment the former limit of transformer T1 starts storage power, because circuit adopts, it is flyback framework, at this moment not conducting of T1 level of transformer, the output of Switching Power Supply 1 is by C4 power supply (electric weight storing) before; When triode Q1 turn-offs, the former limit of transformer T1 inductive current can not suddenly change, and electromotive force can reverse, the conducting of diode D3 positively biased, and the secondary transmission energy of T1, attached helping as chip U1 provides energy, completes and opens to end, ready for opening next time, goes round and begins again like this.In figure, R1, C3, D1 form peak absorbing circuit, and protection Q1 triode is not punctured by pointing peak.R4, R5 form series connection pressure sampling circuit provides sampling reference for chip U1.D2 and C5 form current rectifying and wave filtering circuit provides supply voltage for chip U1.CY1 is that filter away high frequency noise is disturbed.
Chip U1 model is SN25, and major function is the pulse that produces frequency, built-in linear saw-tooth wave oscillator, and frequency of oscillation can regulate by a resistance and an electric capacity of outside.The pulse of output capacitance C4 is relatively to realize by sampling, and when sampled signal increases, pulse duration will reduce, and to change output voltage height, realizes the object of automatic stabilisation voltage.There is high precious, Sai Wei in production firm.
Described control circuit 2 has the function of light-operated timing, and Main Function is have luminous environment transducer to detect light and deliver to control chip U2 and process, and base when external crystal oscillator provides high accuracy for control chip U2, carries out accurate timing.
The Main Function of described voltage stabilizing circuit 3 is to provide stable operating voltage for MCU single-chip microcomputer.
Described drive circuit 4, Main Function is to provide enough driving powers for LED lamp.
The difference of above-mentioned three embodiment is the difference of drive circuit 4, is respectively described below.
Referring to Fig. 1, the drive circuit 4 of this embodiment comprises a base resistance R9 and a NPN triode Q2, one end of base resistance R9 is connected with an output of described control chip U2, and the other end is connected with the base stage of NPN triode Q2, the grounded emitter of NPN triode Q2; The positive pole of the collector electrode of NPN triode Q2 and described Switching Power Supply 1 is as being connected two outputs of LED lamp string (lead-out terminal 1,2).
The working method of above-described embodiment is: the direct voltage of capacitor C 4 two ends stable outputs, by voltage stabilizing circuit 3, stable operating voltage is provided to control chip U2, light sensor Rg detection luminous environment luminance signal is delivered to 3 pin of control chip U2 and is processed, have the light time to keep LED lamp to extinguish, unglazed bright light LED lamp continues X hour.After pressing trigger switch SW button, inner timing, output 6 pin output high level driving triode Q2 conductings, output voltage foundation, the lightening LED lamp of starting of control chip U2.After work some (X) hour, output port 6 pin output low levels, drive triode Q2 to turn-off, output dead electricity, and LED lamp extinguishes.Meeting Auto Power On after 24-X hour, so repeatedly.The feature of this drive circuit 4 is that the simple cost of circuit is low.
Referring to Fig. 2, the drive circuit 4 of this embodiment comprises two base resistance R13 and R14, two PNP triode Q3 and Q4, two NPN triode Q5 and Q6, two upper offset resistance R 15 and R11 and two below-center offset resistance R 10 and R12, one end of two base resistance R13, R14 is connected with two outputs (6,7 pin) of described control chip U2 respectively, and the other end of R13, R14 is connected with the base stage of two NPN triode Q5, Q6 respectively; The corresponding connection of collector electrode of the collector electrode of two PNP triode Q3, Q4 and two NPN triode Q5, Q6, and as two outputs (lead-out terminal 1,2) that connect LED lamp; Between the base stage of two PNP triode Q3, Q4 and emitter, be respectively connected a upper offset resistance R 15, R11, between the base stage of two PNP triode Q3, Q4 and collector electrode respectively below-center offset resistance R 10 of mutual interconnection, (two ends that are R10 are connected between the base stage of Q3 and the collector electrode of Q4 R12; The two ends of R12 are connected between the base stage of Q4 and the collector electrode of Q3); The emitter of two PNP triode Q3, Q4 is connected with the positive pole of Switching Power Supply 1, the grounded emitter of two NPN triode Q5, Q6.
The working method of above-described embodiment is, the direct voltage of capacitor C 4 two ends stable outputs, by voltage stabilizing circuit 3, stable operating voltage is provided to control chip U2, light sensor Rg detection luminous environment luminance signal is delivered to 3 pin of control chip U2 and is processed, have the light time to keep LED lamp to extinguish, unglazed bright light LED lamp continues X hour, within 24-X hour, turns off the light, enter afterwards the brightness of standby testing environment, successively circulation.After pressing trigger switch SW button, can change the output mode (this chip has 8 kinds of patterns) of two outputs of control chip U2 (6,7 pin), thereby change the bridge circuit working method of four triode Q3, Q4, Q5, Q6 composition, output dc voltage is carried out to fine ripple, to realize the control to two line two paths of LED lamps, reach the object that changes the flicker of LED lamp.The feature of this drive circuit 4 is that direct voltage is chopped into the single LED lamp string that alternating current drives positive and negative reversal connection.
Referring to Fig. 3, the drive circuit 4 of this embodiment comprises two base resistance R13, R14 and two NPN triode Q5, Q6, one end of two base resistance R13, R14 is connected with two outputs (6,7 pin) of described control chip U2 respectively, and the other end is connected with the base stage of two NPN triode Q5, Q6 respectively; The collector electrode of two NPN triode Q5, Q6 is as two outputs that connect LED lamp string negative pole, and the positive pole of described Switching Power Supply 1 is as the output that connects LED lamp string positive pole; The grounded emitter of two NPN triode Q5, Q6.
Above-described embodiment working method is: the direct voltage of capacitor C 4 two ends stable outputs, by voltage stabilizing circuit 3, to U2, provide stable operating voltage, light sensor Rg detection luminous environment luminance signal is delivered to 3 pin of control chip U2 and is processed, there is the light time to keep LED lamp to extinguish, unglazed bright light LED lamp continues X hour, within 24-X hour, turn off the light, enter afterwards the brightness of standby testing environment, successively circulation.After pressing trigger switch SW button, can change the output mode (8 kinds of patterns) of control chip U2 the 6th, 7 ports, thereby change the drive circuit works mode that two triode Q5, Q6 form, output dc voltage is carried out to two-way control, to realize the control to three line two paths of LED lamps, reach the object that changes the flicker of LED lamp.The feature of this drive circuit 4 is directly to drive three line two paths of LED lamps, and circuit structure is simple.
The utility model also has following characteristics:
1) line architecture of Switching Power Supply 1 has adopted the now comparatively popular reverse exciting topological of controlling with former limit, and output can provide two kinds of patterns of constant pressure and flow to meet the reliability requirement that LED drives, and has saved optocoupler.
2) the chip U1 of Switching Power Supply 1 adopts up-to-date control chip PWM IC, can optimize the peripheral component of circuit, and chip adopts unique PFM control mode, can effectively raise the efficiency, and chip also provides short-circuit protection, overvoltage protection simultaneously.
3) the utility model adopts the external crystal oscillator XD1 of control chip U2 to provide accurate time-base signal for this product.Control chip U2 is a kind of microprocessor of controlling LED lamp that is specifically designed to, and model is JT010, and manufacturer is: Depew, Shenzhen Microtronics A/S.Its function is to provide accurate timing, light signal is processed and LED lamp drives signal.Operation principle be U2 supply pin obtain electric after, light sensor detects luminous environment, when there being light time U2 not work, when unglazed, U2 internal processes starts timing, exports driving LED modulating signal simultaneously.After pressing trigger switch SW, can change the timing of U2 internal processes, also can change the style of driving LED modulating signal.
The utlity model has constant pressure and flow function, be well suited for the requirement as LED lamp string driving power, and be a high efficiency, cost is low, circuit is simple, the reliable LED drive circuit of performance safety.
Claims (8)
1. the LED lamp drive circuit with light-operated timing, comprise Switching Power Supply (1), control circuit (2) and drive circuit (4), the output of control circuit (2) is connected with the input of drive circuit (4), and the output of drive circuit (4) is used for connecting LED lamp; Switching Power Supply (1) is given control circuit (2) and drive circuit (4) power supply, it is characterized in that, described control circuit (2) comprises control chip (U2), crystal oscillator (XL1), trigger switch (SW), the power positive end of control chip (U2) is connected with the positive pole of Switching Power Supply (1) by a voltage stabilizing circuit (3), the two ends of crystal oscillator (XL1) are connected to two clock signal terminals of control chip (U2), and the two ends of trigger switch (SW) are connected between the trigger end and ground of control chip (U2); One or two output of control chip (U2) is connected with the input of described drive circuit (4); Between input of control chip (U2) and ground, be connected a light sensor (Rg).
2. the LED lamp drive circuit with light-operated timing according to claim 1, it is characterized in that, described voltage stabilizing circuit is comprised of voltage regulation resistance (R8), electric capacity of voltage regulation (C6) and voltage stabilizing didoe (ZD1), the upper end of voltage regulation resistance (R8) is connected with the cathode output end of this Switching Power Supply (1), electric capacity of voltage regulation (C6) and voltage stabilizing didoe (ZD1) are connected in parallel between the lower end and ground of voltage regulation resistance (R8), and voltage stabilizing didoe (ZD1) is Opposite direction connection; The lower end of voltage regulation resistance (R8) is also connected with the power positive end of control chip (U2).
3. the LED lamp drive circuit with light-operated timing according to claim 1, is characterized in that, described Switching Power Supply (1) adopts single-ended reverse exciting contactor power supply.
4. the LED lamp drive circuit with light-operated timing according to claim 1, it is characterized in that, described drive circuit (4) comprises a base resistance (R9) and a NPN triode (Q2), one end of base resistance (R9) is connected with an output of described control chip (U2), the other end is connected with the base stage of NPN triode (Q2), the grounded emitter of NPN triode (Q2); The positive pole of the collector electrode of NPN triode (Q2) and described Switching Power Supply (1) is as being connected two outputs of LED lamp string.
5. the LED lamp drive circuit with light-operated timing according to claim 1, it is characterized in that, described drive circuit comprises two base resistances (R13, R14), two PNP triodes (Q3, Q4), two NPN triodes (Q5, Q6), two upper offset resistance (R15, R11) and two below-center offset resistance (R10, R12), one end of two base resistances (R13, R14) is connected with two outputs of described control chip (U2) respectively, and the other end is connected with the base stage of two NPN triodes (Q5, Q6) respectively; The corresponding connection of collector electrode of the collector electrode of two PNP triodes (Q3, Q4) and two NPN triodes (Q5, Q6), and as two outputs that connect LED lamp; Between the base stage of two PNP triodes (Q3, Q4) and emitter, be respectively connected a upper offset resistance (R15, R11), below-center offset resistance of mutual interconnection (R10, R12) respectively between the base stage of two PNP triodes (Q3, Q4) and collector electrode; The emitter of two PNP triodes (Q3, Q4) is connected with the positive pole of Switching Power Supply (1), the grounded emitter of two NPN triodes (Q5, Q6).
6. the LED lamp drive circuit with light-operated timing according to claim 1, it is characterized in that, described drive circuit comprises two base resistances (R13, R14) and two NPN triodes (Q5, Q6), one end of two base resistances (R13, R14) is connected with two outputs of described control chip (U2) respectively, and the other end is connected with the base stage of two NPN triodes (Q5, Q6) respectively; The collector electrode of two NPN triodes (Q5, Q6) is as two outputs that connect LED lamp string negative pole, and the positive pole of described Switching Power Supply (1) is as the output that connects LED lamp string positive pole; The grounded emitter of two NPN triodes (Q5, Q6).
7. the LED lamp drive circuit with light-operated timing according to claim 1, is characterized in that, described Switching Power Supply (1) is single-end flyback switching power supply.
8. the LED lamp drive circuit with light-operated timing according to claim 1, is characterized in that, described control chip (U2) is adopted as single-chip microcomputer or LED controls application-specific integrated circuit (ASIC).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420367090.3U CN203934081U (en) | 2014-07-04 | 2014-07-04 | LED lamp drive circuit with light-operated timing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420367090.3U CN203934081U (en) | 2014-07-04 | 2014-07-04 | LED lamp drive circuit with light-operated timing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203934081U true CN203934081U (en) | 2014-11-05 |
Family
ID=51829826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420367090.3U Active CN203934081U (en) | 2014-07-04 | 2014-07-04 | LED lamp drive circuit with light-operated timing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203934081U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107800307A (en) * | 2017-10-27 | 2018-03-13 | 东莞市铭皓照明有限公司 | The circuit structure of ladder friendshipization occurs for a kind of electric current for changing DC low-voltage end |
| CN109195252A (en) * | 2018-09-21 | 2019-01-11 | 宁波多力浦工贸有限公司 | A kind of LED light control lamp control circuit |
| CN110944426A (en) * | 2019-11-20 | 2020-03-31 | 宁波鑫合瑞电子有限公司 | Infrared induction type lamp strip controller and control method thereof |
| CN111031629A (en) * | 2019-11-20 | 2020-04-17 | 宁波鑫合瑞电子有限公司 | Combined lamp belt controller and control method thereof |
-
2014
- 2014-07-04 CN CN201420367090.3U patent/CN203934081U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107800307A (en) * | 2017-10-27 | 2018-03-13 | 东莞市铭皓照明有限公司 | The circuit structure of ladder friendshipization occurs for a kind of electric current for changing DC low-voltage end |
| CN109195252A (en) * | 2018-09-21 | 2019-01-11 | 宁波多力浦工贸有限公司 | A kind of LED light control lamp control circuit |
| CN110944426A (en) * | 2019-11-20 | 2020-03-31 | 宁波鑫合瑞电子有限公司 | Infrared induction type lamp strip controller and control method thereof |
| CN111031629A (en) * | 2019-11-20 | 2020-04-17 | 宁波鑫合瑞电子有限公司 | Combined lamp belt controller and control method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103442501B (en) | Forced constant flow source dimming LED (Light Emitting Diode) lamp | |
| CN203934081U (en) | LED lamp drive circuit with light-operated timing | |
| CN104219840A (en) | LED switch color temperature regulation controller and LED drive circuit | |
| CN102612197B (en) | LED (light emitting diode) driving circuit and LED lamp using same | |
| CN202841639U (en) | Light-emitting diode (LED) driving power device | |
| CN111436174A (en) | High-efficient constant current drive power supply equipment | |
| CN204090236U (en) | LED switch color-temperature regulating controller and LED drive circuit | |
| CN202076931U (en) | Non-electrolysis long-life stable-voltage constant current driving power supply | |
| CN103517524B (en) | Led emergency controller | |
| CN203934080U (en) | With the LED lamp driving power source of timing function | |
| CN204069441U (en) | LED illumination non-isolated drive circuit | |
| CN201430719Y (en) | Electronic emergency inverter | |
| CN202385338U (en) | LED drive power supply | |
| CN203872387U (en) | Power off non-stroboscopic second gear dimmable LED driving power supply | |
| CN203301796U (en) | Control circuit for LED AC (alternating current) drive | |
| CN206433223U (en) | A kind of high reliability long-life synchronous rectified power | |
| CN205124073U (en) | Utilize switch to realize circuit and lamps and lanterns of adjusting luminance | |
| CN2842869Y (en) | Constant voltage-current charging circuit | |
| CN203708613U (en) | Fluorescent lamp preheating starting controller | |
| CN208285616U (en) | A kind of HID lamp electric stabilizer improving efficiency | |
| CN202474845U (en) | Short circuit protection circuit and LED power supply circuit used for active PFC circuit output terminal | |
| CN203467043U (en) | Led emergency controller | |
| CN206865788U (en) | A kind of circuit of corridor light of energy saving | |
| CN201878364U (en) | Improved output non-electrolytic capacitance circuit | |
| CN204145801U (en) | LED drive power |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |