CN211090063U - Adaptive control driving circuit of L ED lamp - Google Patents
Adaptive control driving circuit of L ED lamp Download PDFInfo
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- CN211090063U CN211090063U CN201921569340.0U CN201921569340U CN211090063U CN 211090063 U CN211090063 U CN 211090063U CN 201921569340 U CN201921569340 U CN 201921569340U CN 211090063 U CN211090063 U CN 211090063U
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Abstract
The utility model discloses an adaptive control drive circuit of L ED lamp, which comprises a controller, MCU, L ED drive and two sets of L0 ED module more than, MCU connects on the controller, the PWM-1 end of controller is connected on L1 ED drive, L2 ED drive gives the MCU power supply, be equipped with the PWM-2 end the same with L ED module quantity on the controller, two sets of more than L ED module parallel connection, L ED module is connected on L ED drive, each group L ED module includes more than one L ED of establishing ties, it has PWM control circuit to establish ties in each group L ED module, PWM control circuit is connected to PWM-2 and serves, utilize the utility model discloses a drive circuit, to L ED module adjust luminance, the mixing of colors degree of accuracy is high.
Description
Technical Field
The utility model relates to a self-adaptive control drive circuit of L ED lamp.
Background
L ED lamp in some fields, it is generally necessary to adjust the brightness, color and color temperature of L ED lamp according to the environment and requirement.
The traditional method of adjusting the brightness, color and color temperature of L ED lamps is that multiunit L ED lamp module is connected to L ED driven different output respectively, utilize L ED driven different output to adjust corresponding L ED lamp module respectively, this kind of mode L ED drive needs multiplexed output, need multichannel control circuit moreover for L ED driven structure is complicated, in addition, is difficult to carry out cooperative control to multichannel L ED module.
Therefore, a technology of controlling tandem L ED by one output current is provided, for example, a L ED lamp with adjustable and adjustable colors is disclosed in patent document with published patent application number 201410126694.3 and 2014.07.16, a L ED lamp with adjustable and adjustable colors is specifically disclosed, the LED lamp comprises a rectifying and filtering circuit, a constant current control circuit, a L ED light source and a PWM output module, the rectifying and filtering circuit is used for rectifying and filtering input alternating current into direct current, the constant current control circuit is connected with the output end of the rectifying and filtering circuit and is used for providing constant current for the L ED lamp string, the L LED light source comprises at least two LED strings L D, each L ED string is different in color and connected in series, each L ED 6 string is connected with a switch circuit in parallel, the output module is provided with a first signal output end and a plurality of second signal output ends, the first signal output end is connected with a constant current control circuit to adjust the brightness of the L ED light source, each second signal output end is connected with a switch circuit to adjust the corresponding to a corresponding LED light string 868 LED light string voltage when the LED string voltage of the LED lamp string is changed according to a simple dimming light string L, the principle that the LED lamp string L is connected with a PWM switch L, the LED lamp string voltage of the LED lamp string 367 ED light string, the LED lamp string is easily changed, the LED lamp string L, the LED lamp string 367 LED lamp string, the LED lamp string is connected with a 367 LED lamp string, the light string 367 LED lamp string, the LED lamp string connected with a 366 string, the light string L, the light string 366 is connected with a light string 367 LED lamp string is connected in series connected with a light string, the light string 366 string, the light string is connected with a light string voltage is easily changed when the light string, the light string 367 LED lamp string, the light string 366 string, the light string is connected with a light string, the light string 366 string is connected with a light string, the light string 366, the light string is connected with a light string is connected.
Disclosure of Invention
The utility model aims at providing a self-adaptive control drive circuit of L ED lamp utilizes the utility model discloses a drive circuit, to L ED module adjust luminance, mixing of colors degree of accuracy height.
In order to achieve the purpose, the self-adaptive control driving circuit of the L ED lamp comprises a controller, an MCU, a L ED driver and more than two groups of L0 ED modules, wherein the MCU is connected to the controller, a PWM-1 end of the controller is connected to the L1 ED driver, the L ED driver supplies power to the MCU, the controller is provided with more than one PWM-2 ends, the number of the PWM-2 ends is the same as that of the L ED modules, the more than two groups of L ED modules are connected in parallel, the L ED module is connected to the L ED driver, each group of L ED modules comprises more than one L ED connected in series, a PWM control circuit is connected in series in each group of L ED modules, and the PWM control circuit is connected to the PWM-2 ends.
According to the adaptive control driving circuit of the L ED lamp, the L ED modules are connected in parallel, and the PWM control circuits are connected in series in each group of L ED modules, so that (1) even if at least one group of L ED modules are in an off state, the normal work of other L ED modules cannot be influenced, (2) if all the PWM control circuits are completely switched on, the L ED modules cannot be in a short-circuit state, L ED driving is effectively protected, and (3) as the L ED modules are connected in parallel, the corresponding L ED modules are respectively controlled through the corresponding PWM control circuits, the voltages cannot be influenced by the L ED modules due to adjustment, and the adjustment accuracy is high.
Furthermore, the PWM control circuit comprises a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a MOS transistor Q1 and a MOS transistor Q2, wherein the input end of the resistor R4 is connected with one PWM-2 end, the output end of the resistor R4 is grounded, the input end of the resistor R5 is connected with the input end of the resistor R4, the output end of the resistor R5 is connected with the gate of the MOS transistor Q1, the input end of the resistor R6 is in driving connection with L ED, the output end of the resistor R6 is connected with the drain of the MOS transistor Q1, the input end of the resistor R7 is connected with the source of the MOS transistor Q1, the output end of the resistor R1 is connected with the gate of the MOS transistor Q1, the input end of the resistor R1 is connected with the source of the MOS transistor Q1, and the output end of the resistor R1 is connected with the output end of the resistor R1, and the drain and.
According to the PWM control circuit, the PWM pulse firstly controls the MOS transistor Q1, and when the MOS transistor Q1 is switched on, the MOS transistor Q2 can play a role, so that the double regulation protection effect is achieved.
Furthermore, a wireless module is connected to the controller and is driven to supply power through L ED.
Furthermore, the wireless module is connected with a mobile terminal through a wireless signal. Therefore, the controller is conveniently controlled by the mobile terminal.
The sensor is used for detecting the brightness, color and color temperature of the L ED module, feeding back the detected signals to the controller, controlling the controller by using the MCU, and finally carrying out dimming and color mixing on the L ED module.
Drawings
Fig. 1 is a frame structure diagram of the present invention.
Fig. 2 is a circuit diagram of the present invention.
Fig. 3 is a circuit diagram of the controller, MCU, L ED driver.
FIG. 4 is a circuit diagram of the L ED module and the PWM control circuit.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 and 2, the adaptive control driving circuit of L ED lamp includes a controller 1, an MCU, a L ED driver 2, a PWM control circuit, a sensor 4 and more than two L ED modules 3.
In the embodiment, the AS7221 controller is adopted AS the controller, L ED drive 2 is used AS a drive power supply, and the input end of L ED drive can be connected with direct current or alternating current.
The 3, 4, 5 and 6 ends of the controller 1 are respectively connected with the 2, 6, 5 and 1 ends of the MCU, the controller 1 is driven by L ED to supply power, the PWM-1 end of the controller 1 is connected to the L ED drive 2, the controller is provided with PWM-2 ends with the same number as L ED modules, in the embodiment, the PWM-2 ends comprise PWM2 and PWM3 control ends, and the MCU is driven by L ED to supply power.
L ED drive has the output that supplies power all the way to L ED module L ED module 3 is provided with two sets in this embodiment, and two sets of L ED module 3 are connected to L ED driven output after connecting in parallel, and each group L ED module includes a plurality of L ED. of series connection in this embodiment, and a set of L ED module is positive white L ED module, and the other is warm white L ED module.
The PWM control circuit comprises a resistor R4, a MOS tube Q4 and an MOS tube Q4, wherein the input end of the resistor R4 is connected with one PWM-2 end, the output end of the resistor R4 is grounded, the input end of the resistor R4 is connected with the input end of the resistor R4, the output end of the resistor R4 is connected with the gate of the MOS tube Q4, the input end of the resistor R4 is connected with 4ED in a driving mode, the output end of the resistor R4 is connected with the drain of the MOS tube Q4, the input end of the resistor R4 is connected with the source of the MOS tube Q4, the drain and the source of the MOS tube Q4 are connected in series with the MOS tube Q4 module, the input end of one group of the PWM control circuit is connected with the other group of the PWM control circuit 4, the other group of the PWM control circuit is connected with the input end 4, the other group of the PWM control circuit 4, and the other group of the PWM control circuit is connected in series with the input end of the MOS tube ED 4.
The working principle of the self-adaptive control driving circuit of the L ED lamp is that the sensor is used for respectively detecting the brightness and color of each group of L ED modules, the sensor is used for transmitting detected signals to the controller 1 and transmitting the signals to the MCU through the controller 1, the MCU is used for giving signals to the controller 1 according to the required brightness and color requirements of each group of L ED modules, the controller 1 is used for controlling the output of the L ED driver at the PWM-1 end, then the controller ends of the PWM2 and the PWM3 are used for independently controlling the corresponding L ED module through the corresponding PWM control circuit, and the purpose of independently controlling the brightness and color of the corresponding L ED module through one output is achieved.
The adaptive control driving circuit of the L ED lamp comprises L ED modules which are connected in parallel and PWM control circuits are connected in series in each group of L ED modules, so that (1) even if at least one group of L ED modules is in an off state, the normal work of other L ED modules cannot be influenced, (2) if all the PWM control circuits are switched on, the L ED modules cannot be in a short-circuit state, L ED driving is effectively protected, (3) because L ED modules are connected in parallel, the corresponding L ED modules are respectively controlled through the corresponding PWM control circuits, the voltage cannot be influenced between the L ED modules due to adjustment, and the adjustment accuracy is high.
In order to realize wireless control, a wireless module is connected to the controller and is driven to supply power through L ED, in the embodiment, the wireless module can adopt wif, Bluetooth, infrared and other wireless modules, the wireless module is connected with a mobile terminal through a wireless signal (gateway), an APP is arranged on the mobile terminal, and wireless control can be carried out through the APP.
Claims (5)
1. An adaptive control driving circuit of an L ED lamp comprises a controller, an MCU, a L ED driver and more than two groups of L0 ED modules, wherein the MCU is connected to the controller, a PWM-1 end of the controller is connected to the L1 ED driver, and the L ED driver supplies power to the MCU, and the adaptive control driving circuit is characterized in that the controller is provided with more than two groups of PWM-2 ends, the number of the PWM-2 ends is the same as that of L ED modules, the more than two groups of L ED modules are connected in parallel, the L ED module is connected to the L ED driver, each group of L ED modules comprises more than one L ED connected in series, a PWM control circuit is connected in series in each group of L ED modules, and the PWM control circuit is connected to the PWM-2 ends.
2. The adaptive control driving circuit of a L ED lamp as claimed in claim 1, wherein the PWM control circuit comprises a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a MOS transistor Q1 and a MOS transistor Q2, an input terminal of a resistor R4 is connected with one of the PWM-2 terminals, an output terminal of a resistor R4 is grounded, an input terminal of a resistor R5 is connected with an input terminal of a resistor R4, an output terminal of the resistor R5 is connected with a gate of a MOS transistor Q1, an input terminal of a resistor R6 is connected with L ED drive, an output terminal of the resistor R L is connected with a drain of the MOS transistor Q L, an input terminal of the resistor R L is connected with a source of the MOS transistor Q L, an output terminal of the resistor R L is connected with an output terminal of the resistor R L, and a drain and a source of the MOS transistor Q L are connected in series with the ED module.
3. The adaptive control driver circuit for L ED lamp as claimed in claim 1, wherein the controller is connected with a wireless module, and the wireless module is powered by L ED driver.
4. The adaptive L ED lamp driving circuit according to claim 3, wherein the wireless module is connected to the mobile terminal through wireless signals.
5. The adaptive control driver circuit for L ED lamp as claimed in claim 1, wherein the controller is connected with a sensor powered by L ED driver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921569340.0U CN211090063U (en) | 2019-09-19 | 2019-09-19 | Adaptive control driving circuit of L ED lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921569340.0U CN211090063U (en) | 2019-09-19 | 2019-09-19 | Adaptive control driving circuit of L ED lamp |
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| Publication Number | Publication Date |
|---|---|
| CN211090063U true CN211090063U (en) | 2020-07-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921569340.0U Active CN211090063U (en) | 2019-09-19 | 2019-09-19 | Adaptive control driving circuit of L ED lamp |
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| Country | Link |
|---|---|
| CN (1) | CN211090063U (en) |
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2019
- 2019-09-19 CN CN201921569340.0U patent/CN211090063U/en active Active
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