CN207201046U - A kind of inductive control circuit of output pwm signal - Google Patents
A kind of inductive control circuit of output pwm signal Download PDFInfo
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- CN207201046U CN207201046U CN201720873596.5U CN201720873596U CN207201046U CN 207201046 U CN207201046 U CN 207201046U CN 201720873596 U CN201720873596 U CN 201720873596U CN 207201046 U CN207201046 U CN 207201046U
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- chip microcomputer
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- 230000001939 inductive effect Effects 0.000 title claims abstract description 14
- 238000001914 filtration Methods 0.000 claims abstract description 25
- 230000033228 biological regulation Effects 0.000 claims abstract description 24
- 230000000087 stabilizing effect Effects 0.000 claims description 20
- 239000003990 capacitor Substances 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009514 concussion Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000004148 unit process Methods 0.000 description 1
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Abstract
The utility model discloses a kind of inductive control circuit of output pwm signal, including signal receiving unit, signal processing unit, voltage regulation filtering unit；The voltage regulation filtering unit is electrically connected with signal receiving unit, signal processing unit respectively；The signal receiving unit is electrically connected with signal processing unit.The utility model energy output pwm signal control the gradually bright of light fixture fades off, and circuit stability is reliable, and delay accuracy is high, is effectively reduced cost.
Description
Technical field
It the utility model is related to light fixture sensing control technology field, more particularly to a kind of sensing control of output pwm signal
Circuit.
Background technology
At present, the low and high level control light fixture of the sensor circuit output of in the market can only realize moment bright-glimmer-bright or
Bright-to go out-bright state, the eyes of people are made to experience the jump in brightness increasing of lamp；But add generation pwm signal in low and high level rear end
Chip as output signal when, cost is of a relatively high.In addition, current inductive control circuit is carrying out the stabilization of signal amplification
Property it is unsatisfactory with the accuracy of both the time delay of signal delay.
In summary, the inductive control circuit, in practice in the presence of it is inconvenient the problem of, it is therefore necessary to improved.
Utility model content
The purpose of this utility model is to provide a kind of inductive control circuit of output pwm signal, can output pwm signal control
The gradually bright of light fixture fades off, and circuit stability is reliable, and delay accuracy is high, is effectively reduced cost.
To achieve the above object, using following technical scheme：
A kind of inductive control circuit of output pwm signal, including signal receiving unit, signal processing unit, voltage regulation filtering
Unit；The voltage regulation filtering unit is electrically connected with signal receiving unit, signal processing unit respectively；The signal receiving unit
It is electrically connected with signal processing unit.
It is preferred that the signal processing unit includes single-chip microcomputer U1, resistance R3, resistance R4, resistance R5, resistance R6, resistance
R7, electric capacity C4, electric capacity C6；The VDD pins of the single-chip microcomputer U1 are electrically connected with voltage regulation filtering unit；The IN of the single-chip microcomputer U1
+ pin is electrically connected with signal receiving unit；The IN- pins of the single-chip microcomputer U1 respectively with resistance R3 one end, resistance R4 one end,
Electric capacity C4 one end is electrically connected with；It is grounded after another termination capacitor C6 of the resistance R3；The IRC pins difference of the single-chip microcomputer U1
It is electrically connected with the resistance R4 other ends, the electric capacity C4 other ends；The TIMER pins of the single-chip microcomputer U1 respectively with resistance R5, resistance
R6 one end is electrically connected with；The other end ground connection of the resistance R5；The other end and voltage regulation filtering unit of the resistance R6 is electrical
Connection；The CDS pins of the single-chip microcomputer U1 concatenate with resistance R7 is followed by voltage regulation filtering unit；The VSS pins of the single-chip microcomputer U1
Ground connection.
It is preferred that the signal receiving unit includes sensor B1, resistance R1, resistance R2, electric capacity C1；The sensor B1
D pins concatenated with resistance R1 after with voltage regulation filtering unit be electrically connected with；The S pins of the sensor B1 and single-chip microcomputer U1 IN
+ pin is electrically connected with；The G pins ground connection of the sensor B1；The resistance R2, electric capacity C1 are the S of a termination sensor B1
Pin, other end ground connection.
It is preferred that the voltage regulation filtering unit includes voltage stabilizing chip U2, electric capacity C10, electric capacity C11；The voltage stabilizing chip U2
Vout pins concatenated respectively with electric capacity C10, electric capacity C11 after be grounded；The Vout pins of the voltage stabilizing chip U2 also respectively with letter
Number receiving unit, signal processing unit are electrically connected with；The GND pin ground connection of the voltage stabilizing chip U2；The voltage stabilizing chip U2's
Vin pin external direct current power supplies.
It is preferred that the single-chip microcomputer U1 models STC15W204S.
It is preferred that the sensor B1, which is heat, releases infrared sensor, model KP-500BP.
It is preferred that the model HT7550 of the voltage stabilizing chip U2.
Using such scheme, the beneficial effects of the utility model are：
1) induced signal can realize gradually bright fade off after signal processing unit processes；
2) controlled in signal processing unit using single-chip microcomputer U1, circuit stability is reliable, and can be effectively reduced cost；
3) circuit structure is simple, and by single-chip microcomputer U1 programme-control, the dutycycle that PWM signal is exported by routine change is done
Go out corresponding adjustment, can be adjusted according to different environmental demands.
Brief description of the drawings
Fig. 1 is schematic diagram of the present utility model；
Fig. 2 is circuit diagram of the present utility model；
Wherein, accompanying drawing identifier declaration：
1-signal receiving unit, 2-signal processing unit,
3-voltage regulation filtering unit.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.
Referring to figs. 1 to shown in 2, the utility model provides a kind of inductive control circuit of output pwm signal, including signal connects
Receive unit 1, signal processing unit 2, voltage regulation filtering unit 3；The voltage regulation filtering unit 3 respectively with signal receiving unit 1, signal
Processing unit 2 is electrically connected with；The signal receiving unit 1 is electrically connected with signal processing unit 2.
Wherein, the signal processing unit 2 includes single-chip microcomputer U1, resistance R3, resistance R4, resistance R5, resistance R6, resistance
R7, electric capacity C4, electric capacity C6；The VDD pins of the single-chip microcomputer U1 are electrically connected with voltage regulation filtering unit 3；The single-chip microcomputer U1's
IN+ pins are electrically connected with signal receiving unit 1；The IN- pins of the single-chip microcomputer U1 respectively with resistance R3 one end, resistance R4 mono-
End, electric capacity C4 one end are electrically connected with；It is grounded after another termination capacitor C6 of the resistance R3；The IRC pins of the single-chip microcomputer U1
It is electrically connected with respectively with the resistance R4 other ends, the electric capacity C4 other ends；The TIMER pins of the single-chip microcomputer U1 respectively with resistance R5,
Resistance R6 one end is electrically connected with；The other end ground connection of the resistance R5；The other end of the resistance R6 and voltage regulation filtering unit 3
It is electrically connected with；The CDS pins of the single-chip microcomputer U1 concatenate with resistance R7 is followed by voltage regulation filtering unit 3；The VSS of the single-chip microcomputer U1
Pin is grounded.
The signal receiving unit 1 includes sensor B1, resistance R1, resistance R2, electric capacity C1；The D of the sensor B1 draws
Pin is electrically connected with after being concatenated with resistance R1 with voltage regulation filtering unit 3；The IN+ of the S pins and single-chip microcomputer U1 of the sensor B1 draws
Pin is electrically connected with；The G pins ground connection of the sensor B1；The S that the resistance R2, electric capacity C1 are a termination sensor B1 draws
Pin, other end ground connection.
The voltage regulation filtering unit 3 includes voltage stabilizing chip U2, electric capacity C10, electric capacity C11；The Vout of the voltage stabilizing chip U2
Pin is grounded after being concatenated respectively with electric capacity C10, electric capacity C11；The Vout pins of the voltage stabilizing chip U2 also receive with signal respectively
Unit 1, signal processing unit 2 are electrically connected with；The GND pin ground connection of the voltage stabilizing chip U2；The Vin of the voltage stabilizing chip U2 draws
Pin external direct current power supply.
The single-chip microcomputer U1 models STC15W204S.The sensor B1 is that heat releases infrared sensor, model KP-
500BP.The model HT7550 of the voltage stabilizing chip U2.
Utility model works principle：
Relatively simple operating circuit, relative complex mode of operation can be realized.
Voltage stabilizing chip U2 in voltage regulation filtering unit 3 provides stable to signal processing unit 2, signal receiving unit 1 respectively
Operating voltage, and pass through electric capacity C10, electric capacity C11 filtering.The signal received is reached signal transacting by signal receiving unit 1
Unit 2 is handled.
Sensor B1 is that heat releases infrared sensor, and it enters induction range by being worked after resistance R1 current limlitings, when there is human body
When heat release infrared sensor B1 S pins and export faint high level signal, and enter letter after being filtered by electric capacity C1, resistance R2
Number processing unit 2.When signal enters single-chip microcomputer U1 IN+ pins, the signal is amplified place by single-chip microcomputer U1 internal processes
Reason, programmable pwm signal is exported by single-chip microcomputer U1 OUT pins, is also programmable to low and high level；Single-chip microcomputer U1 IN-
Concussion benchmark of the resistance R4 as single-chip microcomputer U1 between pin, IRC pins.Therefore single-chip microcomputer U1 OUT pin output signals
Time it is very accurate, also can stably judge very much heat release infrared sensor B1 S pins input signal.
Preferred embodiment of the present utility model is these are only, is not limited to the utility model, it is all in this practicality
All any modification, equivalent and improvement made within new spirit and principle etc., should be included in guarantor of the present utility model
Within the scope of shield.
Claims (6)
- A kind of 1. inductive control circuit of output pwm signal, it is characterised in that including signal receiving unit, signal processing unit, Voltage regulation filtering unit；The voltage regulation filtering unit is electrically connected with signal receiving unit, signal processing unit respectively；The signal Receiving unit is electrically connected with signal processing unit；The signal processing unit includes single-chip microcomputer U1, resistance R3, resistance R4, electricity Hinder R5, resistance R6, resistance R7, electric capacity C4, electric capacity C6；The VDD pins of the single-chip microcomputer U1 are electrically connected with voltage regulation filtering unit； The IN+ pins of the single-chip microcomputer U1 are electrically connected with signal receiving unit；The IN- pins of the single-chip microcomputer U1 respectively with resistance R3 One end, resistance R4 one end, electric capacity C4 one end are electrically connected with；It is grounded after another termination capacitor C6 of the resistance R3；The monolithic Machine U1 IRC pins are electrically connected with the resistance R4 other ends, the electric capacity C4 other ends respectively；The TIMER pins of the single-chip microcomputer U1 One end with resistance R5, resistance R6 is electrically connected with respectively；The other end ground connection of the resistance R5；The other end of the resistance R6 with Voltage regulation filtering unit is electrically connected with；The CDS pins of the single-chip microcomputer U1 concatenate with resistance R7 is followed by voltage regulation filtering unit；The list Piece machine U1 VSS pins ground connection.
- 2. the inductive control circuit of output pwm signal according to claim 1, it is characterised in that the signal receives single Member includes sensor B1, resistance R1, resistance R2, electric capacity C1；The D pins of the sensor B1 are filtered after being concatenated with resistance R1 with voltage stabilizing Ripple unit is electrically connected with；The S pins of the sensor B1 are electrically connected with single-chip microcomputer U1 IN+ pins；The G of the sensor B1 Pin is grounded；The resistance R2, electric capacity C1 are the S pins of a termination sensor B1, and the other end is grounded.
- 3. the inductive control circuit of output pwm signal according to claim 2, it is characterised in that the voltage regulation filtering list Member includes voltage stabilizing chip U2, electric capacity C10, electric capacity C11；The Vout pins of the voltage stabilizing chip U2 respectively with electric capacity C10, electric capacity It is grounded after C11 concatenations；The Vout pins of the voltage stabilizing chip U2 also electrically connect with signal receiving unit, signal processing unit respectively Connect；The GND pin ground connection of the voltage stabilizing chip U2；The Vin pin external direct current power supplies of the voltage stabilizing chip U2.
- 4. the inductive control circuit of output pwm signal according to claim 1, it is characterised in that the single-chip microcomputer U1 types Number it is STC15W204S.
- 5. the inductive control circuit of output pwm signal according to claim 2, it is characterised in that the sensor B1 is Heat releases infrared sensor, model KP-500BP.
- 6. the inductive control circuit of output pwm signal according to claim 3, it is characterised in that the voltage stabilizing chip U2 Model HT7550.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720873596.5U CN207201046U (en) | 2017-07-18 | 2017-07-18 | A kind of inductive control circuit of output pwm signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720873596.5U CN207201046U (en) | 2017-07-18 | 2017-07-18 | A kind of inductive control circuit of output pwm signal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207201046U true CN207201046U (en) | 2018-04-06 |
Family
ID=61785843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720873596.5U Expired - Fee Related CN207201046U (en) | 2017-07-18 | 2017-07-18 | A kind of inductive control circuit of output pwm signal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207201046U (en) |
-
2017
- 2017-07-18 CN CN201720873596.5U patent/CN207201046U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180406 |