CN212876157U - Automatic light-adjusting and light-supplementing driving circuit for LED lamp - Google Patents
Automatic light-adjusting and light-supplementing driving circuit for LED lamp Download PDFInfo
- Publication number
- CN212876157U CN212876157U CN202021103532.5U CN202021103532U CN212876157U CN 212876157 U CN212876157 U CN 212876157U CN 202021103532 U CN202021103532 U CN 202021103532U CN 212876157 U CN212876157 U CN 212876157U
- Authority
- CN
- China
- Prior art keywords
- resistor
- circuit
- led lamp
- ambient brightness
- diode
- 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.)
- Expired - Fee Related
Links
Images
Abstract
The utility model discloses an automatic light filling drive circuit that adjusts luminance of LED lamp, including the ambient light detection circuitry who is used for detecting ambient brightness, ambient light detection circuitry is connected with the dimming control circuit of built-in ambient brightness preset value in order, adjusts the PWM pulse output circuit of the PWM pulse of output, adjusts LED lamp output current's current output circuit according to the PWM pulse of output according to dimming control circuit contrast ambient brightness preset value and ambient brightness detected value, current output circuit is connected with power input circuit, can change the PWM pulse of output according to detecting ambient brightness to change the electric current size of LED lamp, thereby play the automatic light filling function of adjusting luminance.
Description
[ technical field ]
The utility model relates to an automatic light filling drive circuit that adjusts luminance of LED lamp.
[ background art ]
Most of the existing lamps realize the lighting or the closing of an LED light source by controlling an LED matched driver through a switch, so that the lighting or the closing of the LED light source is realized, and the scheme is widely applied to the lighting industry. If a photoresistor and a CPU chip are added in the LED driver, the dimming function of the LED lamp can be realized by APP control and mobile phone control.
The LED driver is invented and put into industrial production, the technology plays an important role in popularizing LED illumination, but the driver always has the problem that automatic dimming and light supplementing cannot be carried out on the luminance brightness control of the used LED lamp, so that the problems of high light control cost, complex operation and the like are solved, and the use value of the LED lamp is greatly deducted.
[ contents of utility model ]
The utility model overcomes above-mentioned technique is not enough, provides an automatic light filling drive circuit that adjusts luminance of LED lamp.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a LED lamp automatic light modulation light filling drive circuit which characterized in that: the LED lamp dimming control circuit comprises an ambient light detection circuit for detecting ambient brightness, wherein the ambient light detection circuit is sequentially connected with a dimming control circuit with a built-in ambient brightness preset value, a PWM pulse output circuit for adjusting output PWM pulses according to the comparison between the ambient brightness preset value and the ambient brightness detection value of the dimming control circuit, and a current output circuit for adjusting the output current of the LED lamp according to the output PWM pulses, and the current output circuit is connected with a power supply input circuit.
As above LED lamp automatic light modulation light filling drive circuit who adjusts luminance which characterized in that: the environment light detection circuit comprises an environment brightness detection probe GM1, one end of the environment brightness detection probe GM1 is respectively connected with a 5V power supply and one end of a resistor R2, the other end of the environment brightness detection probe GM1 is respectively connected with one end of a resistor R1, the other end of a resistor R2 and the dimming control circuit, and the other end of the resistor R1 is grounded.
As above LED lamp automatic light modulation light filling drive circuit who adjusts luminance which characterized in that: the current output circuit comprises a transformer T1, one end of the transformer T1 is connected with a positive electrode end of a diode D3 and a PWM pulse output circuit, the other end of the transformer T1 is connected with one end of a capacitor C3, one end of a resistor R9 and one end of an LED lamp interface, a negative electrode end of the diode D3, the other end of the capacitor C3, the other end of a resistor R9, the other end of the LED lamp interface, one end of a resistor R6, one end of a resistor R4 and one end of a resistor R3 are connected with a VBUS power supply respectively, the other end of the resistor R6 is connected with the PWM pulse output circuit and one end of the resistor R5 respectively, the resistor R5 is connected with a positive electrode end of a diode D2, the negative electrode end of the diode D2, the other end of the resistor R4, the other end of the resistor R3, a positive electrode end of an electrolytic capacitor C1 and a negative electrode end of.
As above LED lamp automatic light modulation light filling drive circuit who adjusts luminance which characterized in that: the power input circuit comprises a bridge rectifier diode BD1, a pin BD1 of the bridge rectifier diode BD, a pin BD1 of the bridge rectifier diode BD is connected with mains supply, a pin BD1 of the bridge rectifier diode BD is grounded, a pin BD1 of the bridge rectifier diode BD is connected with VBUS power, the positive end of an electrolytic capacitor CE1 is connected with the VBUS power, and the negative end of the electrolytic capacitor CE1 is grounded.
The utility model has the advantages that:
the utility model discloses can change the PWM pulse of output according to detection ring border luminance to change the electric current size of LED lamp, thereby play the automatic light filling function of adjusting luminance, have easy operation, installation convenient to use, low cost advantage.
[ description of the drawings ]
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic circuit diagram of the present invention.
[ detailed description of the invention ]
The following description is further detailed with reference to the accompanying drawings and embodiments of the present invention:
as shown in fig. 1, an automatic dimming and light supplementing driving circuit for an LED lamp includes an ambient light detection circuit 1 for detecting ambient brightness, the ambient light detection circuit 1 is sequentially connected to a dimming control circuit 2 with an ambient brightness preset value, a PWM pulse output circuit 3 for adjusting output PWM pulses according to the comparison between the ambient brightness preset value and the ambient brightness detection value by the dimming control circuit 2, and a current output circuit 4 for adjusting output current of the LED lamp according to the output PWM pulses, and the current output circuit 4 is connected to a power input circuit 5. Before using, set up minimum ambient brightness default and highest ambient brightness default in dimming control circuit 2, ambient light detection circuitry 1 detects the ambient brightness value during the use, and compare with the ambient brightness default, when the ambient brightness detected value is less than minimum ambient brightness default, dimming control circuit 2 improves PWM pulse output circuit 3's PWM output pulse, thereby improve current output circuit 4's output current, thereby improve the luminance of LED lamp, when the ambient brightness detected value is higher than highest ambient brightness default on the same way, dimming control circuit 2 reduces PWM pulse output circuit 3's PWM output pulse, thereby reduce current output circuit 4's output current, thereby reduce the luminance of LED lamp, realize the automatic light modulation light filling function of LED lamp.
As shown in fig. 2, the ambient light detection circuit 1 includes an ambient brightness detection probe GM1, one end of the ambient brightness detection probe GM1 is connected to the 5V power supply and one end of the resistor R2, the other end of the ambient brightness detection probe GM1 is connected to one end of the resistor R1, the other end of the resistor R2, and the dimming control circuit 2, and the other end of the resistor R1 is grounded, and the ambient brightness detection probe GM1 detects the ambient brightness value and transmits the ambient brightness value to the dimming control circuit 2 during operation.
As shown in fig. 2, the current output circuit 4 includes a transformer T1, one end of the transformer T1 is connected to the positive terminal of the diode D3 and the PWM pulse output circuit 3, the other end of the transformer T1 is connected to one end of the capacitor C3, one end of the resistor R9 and one end of the LED lamp interface, the negative terminal of the diode D3, the other end of the capacitor C3, the other end of the resistor R9, the other end of the LED lamp interface and one end of the resistor R6, one end of a resistor R4 and one end of a resistor R3 are respectively connected with a VBUS power supply, the other end of a resistor R6 is respectively connected with the PWM pulse output circuit 3 and one end of a resistor R5, the resistor R5 is connected with the positive end of a diode D2, the negative end of a diode D2, the other end of a resistor R4, the other end of a resistor R3, the positive end of an electrolytic capacitor C1 and the negative end of a voltage stabilizing diode D1 are respectively connected with a 5V power supply, the negative end of the electrolytic capacitor C1 and the positive end of the voltage stabilizing diode D1 are respectively grounded, and the output current is adjusted according to PWM pulses output by the PWM pulse output circuit 3.
As shown in fig. 2, the power input circuit 5 includes a bridge rectifier diode BD1, a pin BD1 of the bridge rectifier diode and a pin BD1 of the bridge rectifier diode are respectively connected to the mains, a pin BD1 of the bridge rectifier diode is grounded, a pin BD1 of the bridge rectifier diode is grounded to output the VBUS power, a positive terminal of an electrolytic capacitor CE1 is respectively connected to the VBUS power, and a negative terminal of the electrolytic capacitor CE1 is grounded.
Claims (4)
1. The utility model provides a LED lamp automatic light modulation light filling drive circuit which characterized in that: the LED lamp dimming control circuit comprises an ambient light detection circuit (1) for detecting ambient brightness, wherein the ambient light detection circuit (1) is sequentially connected with a dimming control circuit (2) with a built-in ambient brightness preset value, a PWM pulse output circuit (3) for adjusting output PWM pulses according to the comparison between the ambient brightness preset value and an ambient brightness detection value of the dimming control circuit (2), and a current output circuit (4) for adjusting the output current of the LED lamp according to the output PWM pulses, and the current output circuit (4) is connected with a power input circuit (5).
2. The LED lamp automatic dimming and light supplementing driving circuit according to claim 1, characterized in that: the ambient light detection circuit (1) comprises an ambient brightness detection probe GM1, one end of the ambient brightness detection probe GM1 is respectively connected with a 5V power supply and one end of a resistor R2, the other end of the ambient brightness detection probe GM1 is respectively connected with one end of a resistor R1, the other end of a resistor R2 and the dimming control circuit (2), and the other end of the resistor R1 is grounded.
3. The LED lamp automatic dimming and light supplementing driving circuit according to claim 1, characterized in that: the current output circuit (4) comprises a transformer T1, one end of the transformer T1 is connected with the positive terminal of a diode D3 and the PWM pulse output circuit (3) respectively, the other end of the transformer T1 is connected with one end of a capacitor C3, one end of a resistor R9 and one end of an LED lamp interface respectively, the negative terminal of the diode D3, the other end of the capacitor C3, the other end of a resistor R9, the other end of the LED lamp interface, one end of a resistor R6, one end of the resistor R4 and one end of a resistor R3 are connected with a VBUS power supply respectively, the other end of the resistor R6 is connected with the PWM pulse output circuit (3) and one end of a resistor R5 respectively, the resistor R5 is connected with the positive terminal of a diode D2, the negative terminal of the diode D2, the other end of the resistor R4, the other end of the resistor R3, the positive terminal of an electrolytic capacitor C1 and the negative terminal of a voltage stabilizing diode D59.
4. The LED lamp automatic dimming and light supplementing driving circuit according to claim 1, characterized in that: the power input circuit (5) comprises a bridge rectifier diode BD1, a pin BD1 of the bridge rectifier diode BD, a pin BD1 of the bridge rectifier diode BD is connected with mains supply respectively, a pin BD1 of the bridge rectifier diode BD is grounded, a pin BD1 of the bridge rectifier diode BD is grounded to output VBUS power, the positive end of an electrolytic capacitor CE1 is connected with the VBUS power respectively, and the negative end of the electrolytic capacitor CE1 is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021103532.5U CN212876157U (en) | 2020-06-15 | 2020-06-15 | Automatic light-adjusting and light-supplementing driving circuit for LED lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021103532.5U CN212876157U (en) | 2020-06-15 | 2020-06-15 | Automatic light-adjusting and light-supplementing driving circuit for LED lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212876157U true CN212876157U (en) | 2021-04-02 |
Family
ID=75209563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021103532.5U Expired - Fee Related CN212876157U (en) | 2020-06-15 | 2020-06-15 | Automatic light-adjusting and light-supplementing driving circuit for LED lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212876157U (en) |
-
2020
- 2020-06-15 CN CN202021103532.5U patent/CN212876157U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101742771B (en) | Portable type lamp, light dimming circuit and light dimming method | |
| CN103379713B (en) | Light modulation circuit | |
| CN104837266A (en) | LED daylight induction lamp intelligent control apparatus and method | |
| CN205726501U (en) | A kind of LED adjusting control circuit | |
| CN212876157U (en) | Automatic light-adjusting and light-supplementing driving circuit for LED lamp | |
| TWI444099B (en) | Light source device and dimming control circuit thereof | |
| CN202998600U (en) | LED dimming lamp | |
| CN205336608U (en) | Light emitting diode (LED) constant -current driving power supply | |
| CN210781451U (en) | Control circuit of equipment power supply | |
| CN208210363U (en) | A kind of high PF Intelligent dimming circuit structure of high integration | |
| CN207911069U (en) | Constant current output high pressure dimming driver | |
| CN203942674U (en) | A kind of touch LED dimmer switch | |
| CN215010780U (en) | LED lamp control circuit based on comparator integrated circuit | |
| CN211831262U (en) | Dimmable touch induction and human body induction double-induction switch | |
| CN219395085U (en) | Switch-controlled dimming circuit | |
| WO2017173871A1 (en) | Light-emitter and plant growth modulation method | |
| CN112822812B (en) | LED control circuit and LED lamp | |
| CN219555197U (en) | Intelligent illumination LED lamp | |
| CN216752152U (en) | Self-adaptive LED fluorescent lamp | |
| CN106358343B (en) | A kind of LED control circuit | |
| CN215734949U (en) | Light-operated LED lamp area adapter circuit that can adjust luminance | |
| CN211352519U (en) | Wide-voltage, constant-output-power and wide-output-voltage linear circuit and LED lamp | |
| CN213462401U (en) | Driving power supply voltage controller | |
| CN208402158U (en) | A kind of intelligent LED lamp light intensity controllable system | |
| CN106900111A (en) | A kind of LED light adjusting system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210402 Termination date: 20210615 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |