CN210093609U - LED driving power supply control circuit - Google Patents
LED driving power supply control circuit Download PDFInfo
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- CN210093609U CN210093609U CN201920174134.3U CN201920174134U CN210093609U CN 210093609 U CN210093609 U CN 210093609U CN 201920174134 U CN201920174134 U CN 201920174134U CN 210093609 U CN210093609 U CN 210093609U
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- 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 utility model relates to a LED drive power supply control circuit, including mains supply, light source sampling unit, the main control unit, LED drive circuit, the audio frequency detector, the comparator, the switch unit, touch dimming unit, light source sampling unit, protection circuit and power management module, protection circuit is including fuse F1, piezo-resistor R1, discharge tube V1 and thermistor R2, the comparator is connected to the audio frequency detector, the comparator is connected to the first input of main control unit, the light source sampling unit is connected to the second input, touch dimming unit is connected to the third input; the main control output end is connected with the control end of the switch unit, the switch output end is grounded, and the switch input end is connected with the LED drive circuit; the LED can be controlled to emit light in a voice recognition and touch mode in a dark environment, energy is saved, environment is protected, lightning surge interference can not be easily caused, electric sparks in the switching process are reduced, the service life of the LED is prolonged, the probability of mistakenly triggering the LED is reduced, and electric energy is further saved.
Description
Technical Field
The utility model belongs to the technical field of the LED technique and specifically relates to indicate a LED drive power supply control circuit.
Background
The existing LED driving mode is single, and is either voice control or touch type. The common voice control driving mode generally adopts a voice control sensor, and the control mode of the voice control sensor is that when a target object makes a sound, an LED can be automatically turned on, and the LED can be automatically turned off in a delayed mode. However, due to the variety of sound sources, for example, footstep sound, vehicle driving sound, horn sound, pet sound, wind sound, rain sound, thunder and the like trigger the voice-operated switch, so that the LED is turned on. The LED driven by the existing voice control cannot well identify a target object, has large error and easily causes the waste of electric energy due to false triggering.
Moreover, the existing LED is also lighted under the environment with sufficient light, which easily causes the waste of electric energy. In addition, the existing LED driving power supply control circuit is poor in stability and easy to be interfered by lightning surge, and the service life of the LED is influenced.
Therefore, in the present invention, the applicant has studied a LED driving power control circuit elaborately to solve the above-mentioned problems.
SUMMERY OF THE UTILITY MODEL
The utility model discloses not enough to above-mentioned prior art exists, main aim at provides a LED drive power supply control circuit, and it is under the dark environment, just can give off light through the mode control LED of speech recognition and touch, and energy-concerving and environment-protective also can be difficult for receiving the thunderbolt surge and disturb, reduces the production of switch in-process electric spark, prolongs LED's life, moreover, reduces the probability of spurious triggering LED, further saves the electric energy.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a LED drive power supply control circuit, is including mains supply, light source sampling unit, main control unit, LED drive circuit, audio detector, comparator, switch element, touch dimming unit, the light source sampling unit who is used for gathering external light source, the power management module who is used for connecting mains supply's protection circuit and is used for the power supply, wherein:
the protection circuit is connected with the power management module and comprises a fuse F1, a voltage dependent resistor R1, a discharge tube V1 and a thermistor R2, one end of the fuse F1 is connected with a live wire of a mains supply, the other end of the fuse F1 is respectively connected with one end of a voltage dependent resistor R1 and one end of a thermistor R2, the other end of the voltage dependent resistor R1 is respectively connected with a zero line of the mains supply and the power management module through a discharge tube V1, and the other end of the thermistor R2 is connected with the power management module;
the main control unit is provided with a first input end, a second input end, a third input end and a main control output end, the audio detector is connected with the comparator, the first input end is connected with the comparator, the second input end is connected with the light source sampling unit, and the third input end is connected with the touch dimming unit;
the switch unit is provided with a control end, a switch input end and a switch output end, the master control output end is connected with the control end, the switch output end is grounded, the switch input end is connected with the LED drive circuit, and the LED drive circuit is provided with a drive end used for being connected with an LED.
As a preferable scheme, the touch dimming unit comprises a capacitive touch chip U1, a capacitor C1, a capacitor C2, a resistor R3, a resistor R4 and a touch sensing electrode for receiving a human body sensing touch signal;
the capacitive touch chip U1 is provided with a touch pin 1 to a touch pin 8, the touch sensing electrode is connected with the touch pin 1 through a capacitor C1, a capacitor C2, a resistor R3 and a resistor R4 in sequence, the touch pin 2, the touch pin 4 and the touch pin 5 are all working mode selection interfaces, the touch pin 3 is connected with a main control unit, the touch pin 6 is connected with a digital ground through a sampling capacitor C3, the touch pin 7 is connected with a power management module, and the touch pin 8 is connected with an analog ground.
Preferably, the touch sensing electrode is made of copper foil.
Preferably, the sampling capacitor C3 is a patch capacitor or a dacron capacitor.
As a preferable scheme, the light source sampling unit includes a voltage-dividing resistor R5 and a photoresistor R6, one end of the voltage-dividing resistor R5 is connected to the power management module, the other end of the voltage-dividing resistor R5 is connected to the photoresistor R6 and then connected to the analog ground, and the other end of the voltage-dividing resistor R5 is connected to the second input end of the main control unit.
Preferably, the resistance value of the voltage dividing resistor R5 is 1K ohm, and when the environment is a sufficient light source, the resistance value of the photosensitive resistor R6 is 10 ohm; when the environment is insufficient, the resistance value of the photoresistor R6 is 1K ohm.
Preferably, the switching unit includes a triode, a base of the triode is a control terminal of the switching unit, a collector of the triode is a switching input terminal of the switching unit, and an emitter of the triode is a switching output terminal of the switching unit.
As a preferable scheme, the main control unit further has a fourth input end, and the fourth input end is connected with a timer.
As a preferred scheme, the power management module includes a rectifying and filtering unit and a power voltage stabilizing circuit, an input end of the rectifying and filtering unit is connected to the other end of the thermistor R2 and the discharge tube V1, an input end of the power voltage stabilizing circuit is connected to an output end of the rectifying and filtering unit, and a power supply end of the power voltage stabilizing circuit is connected to the main control unit, the audio detector, the light source sampling unit, the touch dimming unit and the LED driving circuit.
As a preferable scheme, the power supply voltage stabilizing circuit includes a voltage stabilizing chip U2, a capacitor C4, a polarity capacitor C5, a polarity capacitor C6, and a capacitor C7, where the voltage stabilizing chip U2 has a voltage stabilizing pin 1 to a voltage stabilizing pin 3, the voltage stabilizing pin 1 is connected to the positive electrode of the polarity capacitor C5 and the output end of the rectification filter unit, the capacitor C4 is connected in parallel to the positive electrode and the negative electrode of the polarity capacitor C5, the voltage stabilizing pin 3, the negative electrode of the polarity capacitor C5, and the negative electrode of the polarity capacitor C6 are all connected to analog ground, the voltage stabilizing pin 2 is the output end of the power supply voltage stabilizing circuit, the positive electrode of the polarity capacitor C6 is connected to the voltage stabilizing pin 2, and the capacitor C7 is connected in parallel to the positive.
Compared with the prior art, the utility model obvious advantage and beneficial effect have, particularly: the LED lighting control circuit is mainly characterized in that the LED lighting can be controlled to emit light in a voice recognition and touch mode in a dark environment, energy is saved, the environment is protected, particularly, through the design of a protection circuit, lightning surge interference is not easy to receive, electric sparks in the switching process are reduced, the service life of the LED is prolonged, in addition, through an audio detector and a comparator, a sound source can be accurately recognized, the probability of mistakenly triggering the LED is further reduced, and electric energy is further saved;
secondly, multi-section dimming can be realized through the specific design of the touch dimming unit, so that the touch dimming device is suitable for different brightness requirements;
and the whole circuit structure is ingenious and reasonable in design, and the stability and the reliability of the LED in the use process are ensured.
To more clearly illustrate the structural features and effects of the present invention, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
Drawings
FIG. 1 is a schematic block diagram of an embodiment of the present invention;
fig. 2 is a circuit schematic of a protection circuit according to an embodiment of the present invention;
fig. 3 is a schematic circuit diagram of a power management module according to an embodiment of the present invention;
fig. 4 is a schematic circuit diagram of a touch dimming unit according to an embodiment of the present invention.
The reference numbers illustrate:
10. commercial power supply 20 and light source sampling unit
30. Main control unit 40 and LED drive circuit
51. Audio detector 52, comparator
60. Switch unit
70. Touch dimming unit 71 and touch sensing electrode
80. Light source sampling unit 90 and protection circuit
100. Power management module 101 and rectification filter unit
102. A power supply voltage stabilizing circuit 1021 and a power supply end.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description.
As shown in fig. 1 to 4, an LED driving power control circuit includes a mains power supply 10, a light source sampling unit 20, a main control unit 30, an LED driving circuit 40, an audio detector 51, a comparator 52, a switch unit 60, a touch dimming unit 70, a light source sampling unit 80 for collecting an external light source, a protection circuit 90 for connecting the mains power supply 10, and a power management module 100 for supplying power, wherein:
the protection circuit 90 is connected with the power management module 100, the protection circuit 90 comprises a fuse F1, a voltage dependent resistor R1, a discharge tube V1 and a thermistor R2, one end of the fuse F1 is connected with a live wire of the mains supply 10, the other end of the fuse F1 is respectively connected with one end of a voltage dependent resistor R1 and one end of a thermistor R2, the other end of the voltage dependent resistor R1 is respectively connected with a zero line of the mains supply 10 and the power management module 100 through a discharge tube V1, and the other end of the thermistor R2 is connected with the power management module 100;
the main control unit 30 has a first input terminal, a second input terminal, a third input terminal and a main control output terminal, the audio detector 51 is connected to the comparator 52, and the first input terminal is connected to the comparator 52; the audio detector 51 is configured to collect a sound signal and transmit the sound signal to the comparator 52, the comparator 52 compares the sound frequency segment with a target object sound frequency segment preset in the main control unit 30, and when a signal belonging to the target object sound frequency segment is analyzed, the main control unit 30 outputs a start signal to the LED through the LED driving circuit 40.
The second input end is connected with the light source sampling unit 80; the light source sampling unit 80 comprises a voltage-dividing resistor R5 and a photoresistor R6, one end of the voltage-dividing resistor R5 is connected with the power management module 100, the other end of the voltage-dividing resistor R5 is connected with the photoresistor R6 and then connected with an analog ground, and the other end of the voltage-dividing resistor R5 is connected with a second input end of the main control unit 30. The resistance value of the divider resistor R5 is 1K ohm, and when the environment is sufficient light source, the resistance value of the photosensitive resistor R6 is 10 ohm; when the environment is insufficient, the resistance value of the photoresistor R6 is 1K ohm.
When the light source sampling unit 80 detects that the environment is in a sufficient light source environment, the main control unit 30 controls the switch unit 60 to be switched on, the LED driving circuit 40 does not work, and the LED lamp does not emit light; when the light source sampling unit 80 detects a dark environment, and meanwhile, the audio detector 51 detects a sound or the touch dimming unit 70 receives a touch signal, the main control unit 30 controls the switch unit 60 to be closed, the LED driving circuit 40 operates, and the LED lamp emits light.
The third input end is connected with the touch dimming unit 70; the touch dimming unit 70 comprises a capacitive touch chip U1, a capacitor C1, a capacitor C2, a resistor R3, a resistor R4 and a touch sensing electrode 71 for receiving a human body sensing touch signal; preferably, the material of the touch sensing electrode 71 is copper foil.
The capacitive touch chip U1 has a touch pin 1 to a touch pin 8, the touch sensing electrode 71 is connected with the touch pin 1 through a capacitor C1, a capacitor C2, a resistor R3 and a resistor R4 in sequence, the touch pin 2, the touch pin 4 and the touch pin 5 are all working mode selection interfaces, the touch pin 3 is connected with the main control unit 30, the touch pin 6 is connected with a digital ground through a sampling capacitor C3, the touch pin 7 is connected with the power management module 100, and the touch pin 8 is connected with an analog ground. The sampling capacitor C3 is a patch capacitor or a terylene capacitor.
In this embodiment, the touch pin 2 is connected to a high level, the touch pin 4 is suspended, and the touch pin 5 is connected to a low level, so that a stepless dimming mode with brightness memory can be realized; the stepless dimming means that the brightness can be continuously increased by long-time touch, a user can adjust the brightness to comfortable brightness according to the needs of the user, and the mode that the brightness of the light is changed from low brightness, medium brightness, high brightness and extinguishment in a circulating mode can be realized.
After the capacitive touch chip U1 is powered on, the touch pin 3 outputs a low level to the main control unit 30, and the main control unit 30 drives the LEDs to be in an off state through the LED driving circuit 40; the click touch sensing electrode 71 transmits a capacitance variation signal to the capacitance type touch chip U1, the low level output by the touch pin 3 is turned to be a high level and then transmitted to the main control unit 30, the main control unit 30 drives the LED through the LED driving circuit 40, so that the on-off control of the LED is realized, and the LED is on by one-time click touch; and clicking and touching again to turn off the LED.
The initial brightness of the LED brightness is fixed to the maximum brightness. If the user presses the touch pad for a long time, the touch pin 3 starts to output a square wave signal to the main control unit 30, and the main control unit 30 drives the LED through the LED driving circuit 40 to realize stepless light brightness adjustment.
The switch unit 60 has a control end, a switch input end and a switch output end, the master control output end is connected with the control end, the switch output end is grounded, the switch input end is connected with the LED driving circuit 40, and the LED driving circuit 40 has a driving end for connecting an LED. Preferably, the switching unit 60 includes a transistor, a base of the transistor is a control terminal of the switching unit 60, a collector of the transistor is a switching input terminal of the switching unit 60, and an emitter of the transistor is a switching output terminal of the switching unit 60. The main control unit 30 further has a fourth input terminal connected to a timer. And the time length of the LED lighting state is controlled by the timer, so that the electric energy is further saved.
The power management module 100 comprises a rectifying and filtering unit 101 and a power supply voltage stabilizing circuit 102, wherein the input end of the rectifying and filtering unit 101 is respectively connected with the other end of the thermistor R2 and the discharge tube V1, the input end of the power supply voltage stabilizing circuit 102 is connected with the output end of the rectifying and filtering unit 101, and the power supply end 1021 of the power supply voltage stabilizing circuit 102 is connected with the main control unit 30, the audio detector 51, the light source sampling unit 80, the touch dimming unit 70 and the LED driving circuit 40.
In this embodiment, the power voltage stabilizing circuit 102 includes a voltage stabilizing chip U2, a capacitor C4, a polarity capacitor C5, a polarity capacitor C6, and a capacitor C7, where the voltage stabilizing chip U2 has a voltage stabilizing pin 1 to a voltage stabilizing pin 3, the voltage stabilizing pin 1 is connected to the positive electrode of the polarity capacitor C5 and the output terminal of the rectifying and filtering unit 101, the capacitor C4 is connected in parallel to the positive electrode and the negative electrode of the polarity capacitor C5, the voltage stabilizing pin 3, the negative electrode of the polarity capacitor C5, and the negative electrode of the polarity capacitor C6 are all connected to the analog ground, the voltage stabilizing pin 2 is the output terminal of the power voltage stabilizing circuit 102, the positive electrode of the polarity capacitor C6 is connected to the voltage stabilizing pin 2, and the capacitor C7 is connected in parallel to the. The polar capacitor C5 and the polar capacitor C6 are electrolytic capacitors, and the capacitor C4 and the capacitor C7 are filter capacitors.
The utility model is mainly characterized in that the LED can be controlled to emit light in a voice recognition and touch mode in a dark environment, the energy is saved, the environment is protected, especially, the protection circuit is not easy to be interfered by lightning surge, the electric spark in the switching process is reduced, the service life of the LED is prolonged, moreover, the sound source can be accurately recognized through an audio detector and a comparator, the probability of mistakenly triggering the LED is further reduced, and the electric energy is further saved;
secondly, multi-section dimming can be realized through the specific design of the touch dimming unit, so that the touch dimming device is suitable for different brightness requirements;
and the whole circuit structure is ingenious and reasonable in design, and the stability and the reliability of the LED in the use process are ensured.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any slight modifications, equivalent changes and modifications made by the technical spirit of the present invention to the above embodiments are all within the scope of the technical solution of the present invention.
Claims (10)
1. The utility model provides a LED drive power supply control circuit which characterized in that: including mains supply, light source sampling unit, main control unit, LED drive circuit, audio detector, comparator, switch unit, touch dimming unit, be used for gathering external light source's light source sampling unit, be used for connecting mains supply's protection circuit and be used for the power management module of power supply, wherein:
the protection circuit is connected with the power management module and comprises a fuse F1, a voltage dependent resistor R1, a discharge tube V1 and a thermistor R2, one end of the fuse F1 is connected with a live wire of a mains supply, the other end of the fuse F1 is respectively connected with one end of a voltage dependent resistor R1 and one end of a thermistor R2, the other end of the voltage dependent resistor R1 is respectively connected with a zero line of the mains supply and the power management module through a discharge tube V1, and the other end of the thermistor R2 is connected with the power management module;
the main control unit is provided with a first input end, a second input end, a third input end and a main control output end, the audio detector is connected with the comparator, the first input end is connected with the comparator, the second input end is connected with the light source sampling unit, and the third input end is connected with the touch dimming unit;
the switch unit is provided with a control end, a switch input end and a switch output end, the master control output end is connected with the control end, the switch output end is grounded, the switch input end is connected with the LED drive circuit, and the LED drive circuit is provided with a drive end used for being connected with an LED.
2. The LED driving power control circuit according to claim 1, wherein: the touch dimming unit comprises a capacitive touch chip U1, a capacitor C1, a capacitor C2, a resistor R3, a resistor R4 and a touch sensing electrode for receiving a human body sensing touch signal;
the capacitive touch chip U1 is provided with a touch pin 1 to a touch pin 8, the touch sensing electrode is connected with the touch pin 1 through a capacitor C1, a capacitor C2, a resistor R3 and a resistor R4 in sequence, the touch pin 2, the touch pin 4 and the touch pin 5 are all working mode selection interfaces, the touch pin 3 is connected with a main control unit, the touch pin 6 is connected with a digital ground through a sampling capacitor C3, the touch pin 7 is connected with a power management module, and the touch pin 8 is connected with an analog ground.
3. The LED driving power control circuit according to claim 2, wherein: the touch sensing electrode is made of copper foil.
4. The LED driving power control circuit according to claim 2, wherein: the sampling capacitor C3 is a patch capacitor or a terylene capacitor.
5. The LED driving power control circuit according to claim 1, wherein: the light source sampling unit comprises a voltage-dividing resistor R5 and a photoresistor R6, one end of the voltage-dividing resistor R5 is connected with the power management module, the other end of the voltage-dividing resistor R5 is connected with the photoresistor R6 and then connected with an analog ground, and the other end of the voltage-dividing resistor R5 is connected with a second input end of the main control unit.
6. The LED driving power control circuit according to claim 5, wherein: the resistance value of the divider resistor R5 is 1K ohm, and when the environment is sufficient light source, the resistance value of the photosensitive resistor R6 is 10 ohm; when the environment is insufficient, the resistance value of the photoresistor R6 is 1K ohm.
7. The LED driving power control circuit according to claim 5, wherein: the switch unit comprises a triode, the base electrode of the triode is the control end of the switch unit, the collector electrode of the triode is the switch input end of the switch unit, and the emitter electrode of the triode is the switch output end of the switch unit.
8. The LED driving power control circuit according to claim 1, wherein: the main control unit is also provided with a fourth input end, and the fourth input end is connected with a timer.
9. The LED driving power control circuit according to claim 1, wherein: the power supply management module comprises a rectifying and filtering unit and a power supply voltage stabilizing circuit, wherein the input end of the rectifying and filtering unit is respectively connected with the other end of the thermistor R2 and the discharge tube V1, the input end of the power supply voltage stabilizing circuit is connected with the output end of the rectifying and filtering unit, and the power supply end of the power supply voltage stabilizing circuit is connected with the main control unit, the audio detector, the light source sampling unit, the touch dimming unit and the LED drive circuit.
10. The LED driving power control circuit according to claim 9, wherein: the power supply voltage stabilizing circuit comprises a voltage stabilizing chip U2, a capacitor C4, a polarity capacitor C5, a polarity capacitor C6 and a capacitor C7, wherein the voltage stabilizing chip U2 is provided with a voltage stabilizing pin 1 to a voltage stabilizing pin 3, the voltage stabilizing pin 1 is respectively connected with the anode of the polarity capacitor C5 and the output end of the rectification filter unit, the capacitor C4 is connected in parallel with the anode and the cathode of the polarity capacitor C5, the voltage stabilizing pin 3, the cathode of the polarity capacitor C5 and the cathode of the polarity capacitor C6 are connected with analog ground, the voltage stabilizing pin 2 is the output end of the power supply voltage stabilizing circuit, the anode of the polarity capacitor C6 is connected with the voltage stabilizing pin 2, and the capacitor C7 is connected in parallel with the anode and the cathode of the.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920174134.3U CN210093609U (en) | 2019-01-31 | 2019-01-31 | LED driving power supply control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920174134.3U CN210093609U (en) | 2019-01-31 | 2019-01-31 | LED driving power supply control circuit |
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| CN210093609U true CN210093609U (en) | 2020-02-18 |
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| CN201920174134.3U Expired - Fee Related CN210093609U (en) | 2019-01-31 | 2019-01-31 | LED driving power supply control circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023237036A1 (en) * | 2022-06-08 | 2023-12-14 | 嘉兴山蒲照明电器有限公司 | Led lighting apparatus and protection apparatus thereof |
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2019
- 2019-01-31 CN CN201920174134.3U patent/CN210093609U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023237036A1 (en) * | 2022-06-08 | 2023-12-14 | 嘉兴山蒲照明电器有限公司 | Led lighting apparatus and protection apparatus thereof |
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