CN211019345U - Control circuit for realizing L ED lamp gradual lighting through MCU control - Google Patents
Control circuit for realizing L ED lamp gradual lighting through MCU control Download PDFInfo
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- CN211019345U CN211019345U CN201922134330.0U CN201922134330U CN211019345U CN 211019345 U CN211019345 U CN 211019345U CN 201922134330 U CN201922134330 U CN 201922134330U CN 211019345 U CN211019345 U CN 211019345U
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Abstract
The utility model provides a control circuit that L ED lamp was gradually lighted through MCU control realization, including the inside control chip MCU that has delay time and gradual rate of increase, L ED drive power Driver and with the NPN type triode circuit that control chip MCU and L ED drive power Driver are connected, power INPUT end INPUT is connected to L ED drive power Driver one side, power OUTPUT end OUTPUT is connected to the opposite side, and be in L ED drive power Driver and power OUTPUT end OUTPUT still are connected with a common mode inductance L between, still be connected with a filter circuit between control chip MCU and the NPN type triode circuit, filter circuit includes a capacitor circuit and a resistance circuit of parallel connection, in the practical application process, control chip MCU control OUTPUT voltage, then according to the settlement gradual voltage difference that increases of procedure, the voltage of OUTPUT for L ED lamp is increasingly high, L ED is increasingly lighted, reaches the purpose of gradually shining, and this circuit connection design is reasonable, and the application effect is outstanding.
Description
[ technical field ]
The utility model relates to an L ED lamp control circuit technical field especially relates to an application effect is good, can reduce the control circuit who realizes L ED lamp gradually shining through MCU control to switch and other electrical impact very obviously.
[ background art ]
In daily work and life, occasions of turning on the lamp in darkness are many, particularly L ED, preheating is not needed, 100% of brightness can be achieved instantly, the brightness which suddenly reaches 100% in darkness is not good for eyes, and the lamp is instantly blind, the light design in life is not very strong, but suddenly reaches 100% in darkness, discomfort and discomfort are caused to people.
In the case of group-controlled L ED lighting, a large number of lamps are turned on simultaneously, and the impact on switches and other electrical equipment is also large.
Based on the above problems, in order to reduce the risk and improve the safety performance, those skilled in the art have conducted a lot of research and development and experiments, and have started to improve and improve the connection relationship of the L ED control circuit, and have achieved better results.
[ contents of utility model ]
For overcoming the problem that prior art exists, the utility model provides an application effect is good, can very obviously reduce to switch and other electric impact realize L ED lamp control circuit that brightens gradually through MCU control.
The utility model provides a scheme of technical problem provides a realize L ED lamp control circuit of gradually brightening through MCU control, including the inside control chip MCU that sets for delay time and progressively increase duty cycle (PWM), L ED drive power Driver and with the NPN type triode circuit that control chip MCU and L ED drive power Driver are connected, L ED drive power Driver one side is connected power INPUT end INPUT, the other side is connected power OUTPUT end OUTPUT, and still be connected with a common mode inductance L between L ED drive power Driver and power OUTPUT end OUTPUT, still be connected with a filter circuit between the control chip MCU and the NPN type triode circuit, the filter circuit includes a capacitor circuit and a resistance circuit that connect in parallel, a series connection electric capacity in the capacitor circuit, a series connection resistance R2 in the resistance circuit, the NPN type triode circuit includes NPN type triode Q1, the collecting electrode of this NPN type triode Q1 is connected with common mode triode L one end, this inductance Q1 is connected with this NPN type triode emitter of control chip 1, this NPN type triode Q25 is connected with this NPN type triode.
Preferably, a resistor R3 is further connected in series between the collector of the NPN triode and one end of the common mode inductor L, a resistor R1 is further connected in series between the base of the NPN triode and the control chip MCU, and the filter circuit is located between the base of the NPN triode and the resistor R1.
Preferably, one end of the common mode inductor L is connected to two output ends of the L ED driving power Driver, respectively.
Preferably, the power INPUT end INPUT is connected with a control switch SW in series, and the L ED driving power Driver supplies low-voltage power to the control chip MCU through a power supply circuit.
Preferably, a polar capacitor circuit, a resistor circuit and a diode circuit are arranged in the L ED driving power source Driver, a polar capacitor C5 is connected in series in the polar capacitor circuit, a resistor R5 is connected in series in the resistor circuit, a diode D1 is connected in series in the diode circuit, the output end of the diode circuit is connected with the input ends of the polar capacitor circuit and the resistor circuit, and a resistor and a capacitor C2 are connected in parallel between the input end and the output end of the diode D1.
Preferably, the model of the NPN triode Q1 is 2N 2222; the type of the capacitor in the capacitor circuit is 10 nF/50V; the model of the control chip MCU is sop 8; and one end of the resistor R1 is connected with the PWN5 contact point of the control chip MCU.
Compared with the prior art, the utility model relates to a control circuit through MCU control realization L ED lamp is gradually lighted is through adopting following circuit connection design, if set up the inside control chip MCU who has the delay time and gradually increase duty cycle (PWM), L ED drive power Driver and with the NPN type triode circuit that control chip MCU and L ED drive power Driver are connected, power INPUT end INPUT is connected to L ED drive power Driver one side, power OUTPUT end OUTPUT is connected to the opposite side, still be connected with a common mode inductance L between L ED drive power Driver and power OUTPUT end OUTPUT, still be connected with a filter circuit between control chip MCU and the NPN type triode circuit, filter circuit includes a capacitor circuit and a resistance circuit of parallel connection, a series connection electric capacity among the capacitor circuit, series connection electric resistance R2 among the resistance circuit, in the practical application process, control chip MCU control OUTPUT voltage, then gradually increase according to the settlement of procedure, the OUTPUT gives L the voltage of ED lamp high, L reaches more and more bright, the design voltage difference of gradually lighted, this reasonable connection purpose of application.
[ description of the drawings ]
Fig. 1 is a schematic circuit connection diagram of a control circuit for realizing L ED lamp gradual lighting through MCU control.
Fig. 2 is a circuit connection diagram of a specific application of the control circuit for realizing L ED lamp lighting gradually through MCU control.
[ detailed description of the invention ]
To make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 and 2, the control circuit 1 for realizing L ED lamp brightness gradually by MCU control of the present invention includes a control chip MCU with a delay time and a duty ratio (PWM) gradually increased, a L ED driving power Driver, and an NPN type triode circuit connected to the control chip MCU and the L ED driving power Driver, wherein the L ED driving power Driver is connected to a power INPUT terminal INPUT at one side and a power OUTPUT terminal OUTPUT at the other side, a common mode inductor L is connected between the L ED driving power Driver and the power OUTPUT terminal OUTPUT, a filter circuit is connected between the control chip MCU and the NPN type triode circuit, the filter circuit includes a capacitor circuit and a resistor circuit connected in parallel, a capacitor is connected in series in the capacitor circuit, a resistor R2 is connected in series in the resistor circuit, the NPN type triode circuit includes an NPN type triode Q1, a collector of the NPN type triode Q5 is connected to one end of the common mode triode L, a base of the inductor Q1 is connected to an emitter of the NPN type triode Q25, and an emitter of the NPN type triode Q25 is connected to the control chip MCU.
This application is through adopting following circuit connection design, if set up the inside control chip MCU who has the delay time and gradually increase duty cycle (PWM), L ED drive power Driver and with the NPN type triode circuit that control chip MCU and L ED drive power Driver are connected, power INPUT end INPUT is connected to L ED drive power Driver one side, power OUTPUT end OUTPUT is connected to the opposite side, still be connected with a common mode inductance L between L ED drive power Driver and power OUTPUT end OUTPUT, still be connected with a filter circuit between control chip MCU and the NPN type triode circuit, filter circuit includes a capacitor circuit and a resistor circuit of parallel connection, a series connection electric capacity in the capacitor circuit, a series connection resistance R2 among the resistor circuit, in the practical application process, control chip MCU control OUTPUT voltage, then according to the settlement of procedure gradually increase the voltage difference, the voltage that exports L ED lamp is more and more high, L ED is more and more bright, reach the purpose of gradually brightening, this circuit connection design is reasonable, and the outstanding effect of application.
By the control of the gradual lightening of the design, the current can be reduced to about 5 percent from the original 100 percent when the switch is started, and the impact on the switch and other electric appliances can be obviously reduced by reducing the current by more than ten times.
MCU is set through software, a certain time delay is set from the start of turning on the lamp, PWM of the control chip MCU is gradually increased, and the lamp gradually lights up to enable people to gradually adapt to light.
After the switch is closed, L ED drives a power Driver to work, and outputs low voltage power to supply power to the control chip MCU for working;
l ED drives the power Driver to output DC power at the same time;
the control chip MCU controls the output voltage, and then the voltage difference is gradually increased according to the setting of the program, the voltage output to the L ED lamp is higher and higher, and the L ED lamp is brighter and brighter, so that the aim of gradually brightening is fulfilled.
When the L ED power supply is powered on, the MCU is powered on and starts working according to the program set by the software, the minimum output of the current output by the L ED is controlled, then the PWM output is gradually increased, and the maximum current is reached according to the preset time.
After the power supply is turned off and the power supply of the MCU is stopped, the MCU is reset; and realizing the gradually-lightening function again until the next time of starting.
The power supply may be AC or DC.
Preferably, a resistor R3 is further connected in series between the collector of the NPN triode and one end of the common mode inductor L, a resistor R1 is further connected in series between the base of the NPN triode and the control chip MCU, and the filter circuit is located between the base of the NPN triode and the resistor R1.
Preferably, one end of the common mode inductor L is connected to two output ends of the L ED driving power Driver, respectively.
Preferably, the power INPUT end INPUT is connected with a control switch SW in series, and the L ED driving power Driver supplies low-voltage power to the control chip MCU through a power supply circuit.
The SW control switch is a wall switch necessary for lamp installation.
Preferably, a polar capacitor circuit, a resistor circuit and a diode circuit are arranged in the L ED driving power source Driver, a polar capacitor C5 is connected in series in the polar capacitor circuit, a resistor R5 is connected in series in the resistor circuit, a diode D1 is connected in series in the diode circuit, the output end of the diode circuit is connected with the input ends of the polar capacitor circuit and the resistor circuit, and a resistor and a capacitor C2 are connected in parallel between the input end and the output end of the diode D1.
Preferably, the model of the NPN triode Q1 is 2N 2222; the type of the capacitor in the capacitor circuit is 10 nF/50V; the model of the control chip MCU is sop 8; and one end of the resistor R1 is connected with the PWN5 contact point of the control chip MCU.
In the actual design and application process, the MCU can also output PWM to control the MOS tube and the PWM dimming IC, and the method and the effect are the same.
Compared with the prior art, the utility model relates to a control circuit 1 that realizes L ED lamp gradually shining through MCU control is through adopting following circuit connection design, if set up the inside control chip MCU who has delay time and the speed that gradually increases, L ED drive power Driver and with the NPN type triode circuit that control chip MCU and L ED drive power Driver are connected, power INPUT end INPUT is connected to L ED drive power Driver one side, power OUTPUT end OUTPUT is connected to the opposite side, still be connected with a common mode inductance L between L ED drive power Driver and power OUTPUT end OUTPUT, still be connected with a filter circuit between control chip MCU and the NPN type triode circuit, filter circuit includes a parallel connection's a capacitor circuit and a resistance circuit, a series connection electric capacity among the capacitor circuit, series connection resistance R2 etc. among the resistance circuit, in the practical application process, control chip MCU control OUTPUT voltage, then gradually increase according to the settlement according to the procedure, the voltage difference of exporting L ED is higher and higher, L ED reaches the more and more shining, reach the design of gradually, and more reasonable connection purpose of this application.
The above-mentioned embodiments of the present invention do not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (6)
1. A control circuit for achieving L ED lamp gradual lightening through MCU control is characterized by comprising a control chip MCU, a L ED driving power Driver and an NPN type triode circuit, wherein delay time and gradually-increased duty ratio (PWM) are set inside the control chip MCU, the NPN type triode circuit is connected with the control chip MCU and the L ED driving power Driver, one side of the L ED driving power Driver is connected with a power INPUT end INPUT, the other side of the L ED driving power Driver is connected with a power OUTPUT end OUTPUT, a common mode inductor L is connected between the L ED driving power Driver and the power OUTPUT end OUTPUT, a filter circuit is connected between the control chip MCU and the NPN type triode circuit and comprises a capacitor circuit and a resistor circuit which are connected in parallel, a capacitor is connected in series in the capacitor circuit, a resistor R2 is connected in series in the resistor circuit, the NPN type triode circuit comprises an NPN type triode Q1, a collector of the NPN type triode Q1 is connected with one end of a common mode triode L, a base of the capacitor circuit Q1 is connected with the control chip MCU, and an emitter of the NPN type triode Q82 is connected with the NPN type triode 1.
2. The control circuit for realizing L ED lamp gradual lighting through MCU control as claimed in claim 1, wherein a resistor R3 is further connected in series between the collector of said NPN transistor and one end of the common mode inductor L, a resistor R1 is further connected in series between the base of said NPN transistor and the control chip MCU, and said filter circuit is located between the base of said NPN transistor and the resistor R1.
3. The MCU control circuit for realizing L ED lamp dimming according to claim 1, wherein one end of the common mode inductor L is connected to two output terminals of the L ED driving power Driver, respectively.
4. A control circuit for realizing L ED lamp gradual lighting through MCU control according to any one of claims 1-3, wherein a control switch SW is connected in series with the power INPUT terminal INPUT, and the L ED driving power Driver supplies low voltage power to the control chip MCU through a power supply circuit.
5. The control circuit for realizing L ED lamp gradual lighting through MCU control as claimed in claim 1, wherein a polar capacitor circuit, a resistor circuit and a diode circuit are arranged in the L ED driving power Driver, a polar capacitor C5 is connected in series in the polar capacitor circuit, a resistor R5 is connected in series in the resistor circuit, a diode D1 is connected in series in the diode circuit, the output end of the diode circuit is connected with the input ends of the polar capacitor circuit and the resistor circuit, and a resistor and a capacitor C2 are connected in parallel between the input end and the output end of the diode D1.
6. The control circuit for realizing L ED lamp gradual lighting through MCU control as claimed in claim 2, wherein the NPN type triode Q1 is 2N2222, the capacitor in the capacitor circuit is 10nF/50V, the control chip MCU is sop8, and one end of the resistor R1 is connected with the PWN5 contact of the control chip MCU.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922134330.0U CN211019345U (en) | 2019-12-03 | 2019-12-03 | Control circuit for realizing L ED lamp gradual lighting through MCU control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922134330.0U CN211019345U (en) | 2019-12-03 | 2019-12-03 | Control circuit for realizing L ED lamp gradual lighting through MCU control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211019345U true CN211019345U (en) | 2020-07-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922134330.0U Active CN211019345U (en) | 2019-12-03 | 2019-12-03 | Control circuit for realizing L ED lamp gradual lighting through MCU control |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211019345U (en) |
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2019
- 2019-12-03 CN CN201922134330.0U patent/CN211019345U/en active Active
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