CN203814003U - Sound control circuit of LED stage lighting - Google Patents
Sound control circuit of LED stage lighting Download PDFInfo
- Publication number
- CN203814003U CN203814003U CN201420091637.1U CN201420091637U CN203814003U CN 203814003 U CN203814003 U CN 203814003U CN 201420091637 U CN201420091637 U CN 201420091637U CN 203814003 U CN203814003 U CN 203814003U
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- China
- Prior art keywords
- circuit
- output
- led
- control circuit
- sound control
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- 239000003990 capacitor Substances 0.000 claims description 14
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 239000013078 crystal Substances 0.000 claims description 6
- 230000003321 amplification Effects 0.000 abstract description 8
- 238000003199 nucleic acid amplification method Methods 0.000 abstract description 8
- 230000005236 sound signal Effects 0.000 abstract description 4
- 239000011324 bead Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
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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
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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- Led Devices (AREA)
Abstract
The utility model relates to a sound control circuit of LED stage lighting. The sound control circuit is characterized by comprising an audio reception and amplification circuit, a single-chip microcomputer circuit and an LED output control circuit; a microphone BM1 of the audio reception and amplification circuit is taken as an audio receiving input end, and output end of the audio reception and amplification circuit is connected with a signal input end of the single-chip microcomputer circuit, an output end of the single-chip microcomputer circuit is connected with an input end of the LED output control circuit, and an output end of the LED output control circuit is a sound control end of the LED lighting; and an output end of the single-chip microcomputer circuit is a pulse width modulation (PWM) output end. Human body voice is received by the microphone of the audio amplification circuit and forms an audio signal through two-stage amplification, the audio signal is acquired by the single-chip microcomputer circuit and then is processed to be an adjustable PWM signal, the adjustable PWM signal controls the LED output circuit to output linear voltage, different lighting of LED lamp beads on time sequences and brightness are realized, colorful lighting along with people's singing creates an enthusiastic active atmosphere, and the circuit is rapid and sensitive from receiving the singing to lighting; and the sound control circuit is simple in structure and convenient to use, and is suitable for various entertainment places and equipment.
Description
Technical field
The utility model relates to a kind of sound control circuit of light, and particularly a kind of control circuit of LED light of stage belongs to light electron controls technology field.
Background technology
In modern society, along with improving constantly of economic life level, people are more and more higher to the requirement of life and living environment.Easily and fast intelligent artifact is more and more subject to liking of people.No matter be in family or other public place of entertainment for money, it is that most of young men like that novelty is dazzled beautiful effect, especially in present KTV place, simple singing becomes dull and uninteresting, design a kind of can variation according to the height of people's sound, control the light-emitting flash of stage lighting, make light of stage and synchronous sound, for party or dancing party build colorful atmosphere.
Utility model content
The purpose of this utility model, is the sound control circuit for a kind of LED light of stage is provided, and by the height of sound being changed into pwm signal output, controls sequential and the brightness of different LED lamp, have circuit structure simple, be quick on the draw and feature easy to use.
The purpose of this utility model can be by taking following technical scheme to reach:
A kind of sound control circuit of LED light of stage, its design feature is: comprise audio frequency reception and amplifying circuit, single chip circuit and LED output control circuit, audio frequency receives and the microphone BM1 of amplifying circuit receives input as audio frequency, the output of audio frequency reception and amplifying circuit connects the signal input part of single chip circuit, the output of single chip circuit is connected with the input of LED output control circuit, and the output of LED output control circuit is the Sound control end of LED light; The output of single chip circuit is pulse-width signal PWM output.
When use, microphone BM1 converts audio signal to the signal of telecommunication, this signal of telecommunication is sent into single chip circuit after audio frequency reception and amplifying circuit amplification, single chip circuit output pulse width modulation signal PWM, LED output control circuit is according to the size of the pulse-width signal PWM duty ratio of single chip circuit output, and the sequential of LED light of stage and the linear voltage of brightness are controlled in output.
The purpose of this utility model can also be by taking following technical scheme to reach:
A kind of execution mode of the present utility model is: audio frequency receives and amplifying circuit can be formed by connecting by microphone BM1, operational amplifier U1A and U1B, resistance R 1-R7 and capacitor C 1-C2, the signal output part of microphone BM1 connects the positive input terminal of U1A by R1, R3 and connects the negative input end of U1A by C1, R2, the signal output part of U1A connects the negative input end of U1B by R6, the positive input terminal short circuit of the positive input terminal of U1A and U1B and by R4 ground connection, the output of U1B connects the signal input part of single chip circuit, forms audio frequency and receives and second amplifying circuit; Wherein, resistance R 1, microphone BM1 and capacitor C 1 form audio frequency receiving circuit.
A kind of execution mode of the present utility model is: single chip circuit can be made up of singlechip chip and peripheral crystal oscillator, resistance and electric capacity, and singlechip chip and peripheral crystal oscillator, resistance and electric capacity connect into conventional single chip circuit; Singlechip chip has several I/O ports, and having an I/O port at least is signal input part, and having two I/O ports at least is signal output part, output pulse width modulation signal PWM.
A kind of execution mode of the present utility model is: LED output control circuit can be by driving chip U2 and peripheral R8-R11 and capacitor C 3 to be formed by connecting, the Current limited Control end REXT0 of U2, REXT1 is respectively by resistance R 8, R9 ground connection, the power end of U2 is by capacitor C 3 ground connection, the signal input part of U2 is by resistance R 10, R11 connects the output of audio frequency reception and amplifying circuit, the binary signal input of U2 connects the pulse-width signal PWM output of single chip circuit, U2 is by two outer meeting resistance R8, R9 sets the maximum output current of LED, control LED stage lighting LED brightness by output current size.
A kind of execution mode of the present utility model is: described microphone BM1 can be made up of Electret condenser microphone.
A kind of execution mode of the present utility model is: singlechip chip can be made up of the singlechip chip of built-in central control unit and memory cell.
The beneficial effects of the utility model are:
The utility model body sounds receives and is amplified and formed audio signal by two-stage through audio amplifier circuit microphone, gather reprocessing by single chip circuit and become adjustable pwm signal, control LED output circuit output linearity voltage, realize difference luminous in sequential and brightness of LED lamp pearl, dazzle the song that color light is accompanied by people and build ardent activity atmosphere, circuit is from receiving song to luminous rapid sensitive, and simple in structure, easy to use, be applicable to various public places of entertainment and equipment.
Brief description of the drawings
Fig. 1 is structured flowchart of the present utility model.
Fig. 2 is that the audio frequency of the utility model specific embodiment 1 receives and amplification circuit diagram.
Fig. 3 is the LED output control circuit figure of the utility model specific embodiment 1.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail:
Specific embodiment 1:
With reference to Fig. 1, the present embodiment comprises that audio frequency receives and amplifying circuit 1, single chip circuit 2 and LED output control circuit 3, audio frequency receives and the microphone BM1 of amplifying circuit 1 receives input as audio frequency, the output of audio frequency reception and amplifying circuit 1 connects the signal input part of single chip circuit 2, the output of single chip circuit 2 is connected with the input of LED output control circuit 3, and the output of LED output control circuit 3 is the Sound control end of LED light; The output of single chip circuit 2 is pulse-width signal PWM output.
With reference to Fig. 2, audio frequency receives and amplifying circuit 1 is formed by connecting by microphone BM1, operational amplifier U1A and U1B, resistance R 1-R7 and capacitor C 1-C2, the signal output part of microphone BM1 connects the positive input terminal of U1A by R1, R3 and connects the negative input end of U1A by C1, R2, the signal output part of U1A connects the negative input end of U1B by R6, the positive input terminal short circuit of the positive input terminal of U1A and U1B and by R4 ground connection, the output of U1B connects the signal input part of single chip circuit 2, forms audio frequency and receives and second amplifying circuit; Wherein, resistance R 1, microphone BM1 and capacitor C 1 form audio frequency receiving circuit.The power output end of U1A with meet power supply VCC; The other end of resistance R 4 is connected to 4 pin the ground connection of U1A; The output of U1A is connected with the other end of resistance R 5, one end of resistance R 6; The other end of resistance R 6 is connected with the negative input end of operational amplifier U1B, one end of resistance R 7; The other end of resistance R 7 is connected to the 7 pin outputs of U1B.
With reference to Fig. 3, LED output control circuit 3 is by driving chip U2 and peripheral R8-R11 and capacitor C 3 to be formed by connecting, Current limited Control end REXT0, the REXT1 of U2 is respectively by resistance R 8, R9 ground connection, the power end of U2 is by capacitor C 3 ground connection, the signal input part of U2 connects the output of audio frequency reception and amplifying circuit 1 by resistance R 10, R11, the binary signal input of U2 connects the pulse-width signal PWM output of single chip circuit 2, U2 sets the maximum output current of LED by two outer meeting resistance R8, R9, control LED stage lighting LED brightness by output current size.Be 1 pin and the 8 pin Power supply and grounding VCC respectively of integrated drive chips U2, and be serially connected with capacitor C 3 between 1 pin and 8 pin; 2 pin of U2 and 3 pin are respectively by resistance R 8 and R9 ground connection; 6 pin of U2 and 7 pin connect respectively the PWM output signal of single-chip microcomputer as the input of LED output circuit; 4 pin of U2 and 5 pin are as output termination load LED lamp pearl.
In the present embodiment:
Single chip circuit 2(physical circuit figure not shown in FIG., those of ordinary skill in the art can know particular circuit configurations according to the following describes) formed by singlechip chip and peripheral crystal oscillator, resistance and electric capacity, singlechip chip and peripheral crystal oscillator, resistance and electric capacity connect into conventional single chip circuit; Singlechip chip has several I/O ports, and having an I/O port at least is signal input part, and having two I/O ports at least is signal output part, output pulse width modulation signal PWM.
Described microphone BM1 is made up of Electret condenser microphone.Singlechip chip is made up of the singlechip chip of built-in central control unit and memory cell.
The operation principle of the present embodiment:
As shown in Figure 2, circuit is set up DC potential by resistance R 1 and is supplied with Electret condenser microphone BM1, in the time that receiving sound, microphone BM1 can spread out of sound waveform, the sound waveform being passed by capacitor C 1 is delivered to 2 pin of inverting amplifier U1A by resistance R 2, the signal after amplification is delivered to 6 pin of next stage inverting amplifier U1B again by R6; The resistance of regulating resistance R2, R5-R7, can change multiplication factor, and the sensitivity receiving with conditioning signal, prevents circuit erroneous action, and the output signal OUT1 of audio amplifier circuit is delivered to the input of single chip circuit 2.
As shown in Figure 3: integrated drive chips U2 sets the maximum output current of LED by two outer meeting resistance R8, R9, control LED brightness by output current size, in addition, the 6th pin and the 7th pin by single chip circuit 2 output pulse width modulation signal PWM to integrated drive chips U2, can control the lightness of LED, adjustable range is by 0%-100%.Resistance R 10, R11 are current-limiting resistance, can limit the rush of current of booting moment to LED, have improved the life-span taking flashing as main stage lighting.
The above; it is only preferably specific embodiment of the utility model; but protection range of the present utility model is not limited to this; any be familiar with those skilled in the art the utility model disclose scope in; be equal to replacement or changed according to the technical solution of the utility model and utility model design thereof, all being belonged to protection range of the present utility model.
Claims (6)
1. the sound control circuit of a LED light of stage, it is characterized in that: comprise that audio frequency receives and amplifying circuit (1), single chip circuit (2) and LED output control circuit (3), audio frequency receives and the microphone BM1 of amplifying circuit (1) receives input as audio frequency, the output of audio frequency reception and amplifying circuit (1) connects the signal input part of single chip circuit (2), the output of single chip circuit (2) is connected with the input of LED output control circuit (3), and the output of LED output control circuit (3) is the Sound control end of LED light; The output of single chip circuit (2) is pulse-width signal PWM output.
2. the sound control circuit of a kind of LED light of stage according to claim 1, it is characterized in that: audio frequency reception and amplifying circuit (1) are by microphone BM1, operational amplifier U1A and U1B, resistance R 1-R7 and capacitor C 1-C2 are formed by connecting, the signal output part of microphone BM1 passes through R1, R3 connects the positive input terminal of U1A and passes through C1, R2 connects the negative input end of U1A, the signal output part of U1A connects the negative input end of U1B by R6, the positive input terminal short circuit of the positive input terminal of U1A and U1B and by R4 ground connection, the output of U1B connects the signal input part of single chip circuit (2), forming audio frequency receives and second amplifying circuit, wherein, resistance R 1, microphone BM1 and capacitor C 1 form audio frequency receiving circuit.
3. the sound control circuit of a kind of LED light of stage according to claim 1, it is characterized in that: single chip circuit (2) is made up of singlechip chip and peripheral crystal oscillator, resistance and electric capacity, singlechip chip and peripheral crystal oscillator, resistance and electric capacity connect into conventional single chip circuit; Singlechip chip has several I/O ports, and having an I/O port at least is signal input part, and having two I/O ports at least is signal output part, output pulse width modulation signal PWM.
4. the sound control circuit of a kind of LED light of stage according to claim 1, it is characterized in that: LED output control circuit (3) is by driving chip U2 and peripheral R8-R11 and capacitor C 3 to be formed by connecting, the Current limited Control end REXT0 of U2, REXT1 is respectively by resistance R 8, R9 ground connection, the power end of U2 is by capacitor C 3 ground connection, the signal input part of U2 is by resistance R 10, R11 connects the output of audio frequency reception and amplifying circuit (1), the binary signal input of U2 connects the pulse-width signal PWM output of single chip circuit (2), U2 is by two outer meeting resistance R8, R9 sets the maximum output current of LED, control LED stage lighting LED brightness by output current size.
5. according to the sound control circuit of a kind of LED light of stage described in the arbitrary claim of claim 1 to 4, it is characterized in that: described microphone BM1 is made up of Electret condenser microphone.
6. the sound control circuit of a kind of LED light of stage according to claim 3, is characterized in that: singlechip chip is made up of the singlechip chip of built-in central control unit and memory cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420091637.1U CN203814003U (en) | 2014-03-02 | 2014-03-02 | Sound control circuit of LED stage lighting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420091637.1U CN203814003U (en) | 2014-03-02 | 2014-03-02 | Sound control circuit of LED stage lighting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203814003U true CN203814003U (en) | 2014-09-03 |
Family
ID=51452691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420091637.1U Expired - Lifetime CN203814003U (en) | 2014-03-02 | 2014-03-02 | Sound control circuit of LED stage lighting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203814003U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104880980A (en) * | 2015-04-09 | 2015-09-02 | 广东瑞德智能科技股份有限公司 | Voice control circuit |
| US10816154B2 (en) | 2018-05-07 | 2020-10-27 | Wing Kit CHEUNG | Lighting device |
-
2014
- 2014-03-02 CN CN201420091637.1U patent/CN203814003U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104880980A (en) * | 2015-04-09 | 2015-09-02 | 广东瑞德智能科技股份有限公司 | Voice control circuit |
| US10816154B2 (en) | 2018-05-07 | 2020-10-27 | Wing Kit CHEUNG | Lighting device |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140903 |