CN107124800B - A kind of PLC technology Switching Power Supply - Google Patents
A kind of PLC technology Switching Power Supply Download PDFInfo
- Publication number
- CN107124800B CN107124800B CN201710509225.3A CN201710509225A CN107124800B CN 107124800 B CN107124800 B CN 107124800B CN 201710509225 A CN201710509225 A CN 201710509225A CN 107124800 B CN107124800 B CN 107124800B
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- CN
- China
- Prior art keywords
- regulation resistance
- digital regulation
- operational amplifier
- switching power
- power supply
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Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
-
- 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
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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- Dc-Dc Converters (AREA)
Abstract
The invention proposes a kind of PLC technology Switching Power Supplies, including singlechip chip, the first digital regulation resistance and the second digital regulation resistance are connected on the singlechip chip, connecting on first digital regulation resistance has reference voltage, and there are two the first operational amplifiers for connection；The second digital regulation resistance input terminal is connected with simulation dim signal, output end is connected with second operational amplifier, first amplifier and the second amplifier out pass through or the connection of logical AND photo-coupler, the optocoupler output are connect with the singlechip chip；The inverting input terminal of first operational amplifier and second operational amplifier is connected separately with laod network, and single-chip microcontroller is used only as program storage and online with digital regulation resistance in the design, requires MCU low；Comparator is directly provided using the high precision of external reference voltage and digital regulation resistance partial pressure；The programming accuracy and resolution ratio of whole system are unrelated with the hardware configuration of single-chip microcontroller, simple and reliable at low cost.
Description
Technical field
The present invention relates to light emitting diode drive area more particularly to PLC technology Switching Power Supplies.
Background technique
Difference of the existing Switching Power Supply according to loadtype, Basic Design are as follows: 1, constant voltage output；2, constant current is defeated
Out；3, the two exists simultaneously；But the setting of substantially output voltage or output electric current is completely dependent on hardware circuit itself and joins
The setting of the setting or sampling resistor value of examining voltage is realized；It is multifarious for output state required for client
, such as popular light emitting diode application now, each producer/client can need according to self-designed by LED
In series and parallel.Also therefore it is required that the output electric current & voltage specification of driving power is also very fine and closely woven；In order to meet the specification of client
It is required that traditional mode is for each specification all one power supply models of design construction, client purchases calmly according to required place an order
System；, undoubtedly to the buying of both sides of supply and demand, inventory's & production management is very big burden for this, and unfavorable for Quality Cost management.
Summary of the invention
In order to solve the above technical problems, the invention proposes a kind of PLC technology Switching Power Supply, including singlechip chip,
It is connected with the first digital regulation resistance and the second digital regulation resistance on the singlechip chip, is connected on first digital regulation resistance
There is reference voltage, and there are two the first operational amplifiers for connection；The second digital regulation resistance input terminal is connected with simulation light modulation
Signal, output end are connected with second operational amplifier, and first operational amplifier and second operational amplifier output end pass through
Low-voltage or the connection of logical AND photo-coupler, the optocoupler output are connect with the singlechip chip；First fortune
The inverting input terminal for calculating amplifier and second operational amplifier is connected separately with laod network.
Preferably, the voltage after partial pressure is respectively connected to first by first digital regulation resistance and the second digital regulation resistance
The non-inverting input terminal of operational amplifier and second operational amplifier.
Preferably, the laod network is LED load.
Preferably, signal attenuation module, end are connected between the simulation dim signal and second digital regulation resistance
Mouth protection circuit and impedance matching circuit.
Preferably, pwm circuit is connected between the photo-coupler and the singlechip chip.
PLC technology Switching Power Supply proposed by the present invention has following the utility model has the advantages that this power supply can voluntarily be adjusted according to load capacity
Whole input voltage, is applicable in the power supply of various different models, and traditional PLC technology is directly to export one using single-chip microcontroller itself
A reference voltage is to comparator.The generation of reference voltage can be direct DA output either PWM waveform and filter by RC, originally set
Meter be used only single-chip microcontroller as program store and it is online with digital regulation resistance, to MCU requirement it is low；Using external reference voltage with
The high precision partial pressure of digital regulation resistance directly provides comparator；The programming accuracy and resolution ratio of whole system and single-chip microcontroller it is hard
Part configuration is unrelated, and system only needs single-point calibration to ensure that the entire accuracy for programming section；It is simple and reliable at low cost.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described.
Fig. 1 is circuit connection diagram of the invention；
Wherein, 1- singlechip chip, the first digital regulation resistance of 2-, the second digital regulation resistance of 3-, the first operational amplifier of 4-,
5- second operational amplifier, 6- photo-coupler, 7-LED load, 8- simulate dim signal, and 9- single-chip processor i/o mouth, 10- is with reference to electricity
Pressure.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description.
As shown in Figure 1, the invention proposes a kind of PLC technology Switching Power Supply, including singlechip chip 1, the monolithic
The first digital regulation resistance 2 and the second digital regulation resistance 3 are connected on machine core piece 1, connecting on first digital regulation resistance 2 has ginseng
Voltage 10 is examined, the first digital regulation resistance 2 and the second digital regulation resistance 3 are two-channel digital potentiometer；
And the first operational amplifier 4 there are two connecting；Second digital regulation resistance, 3 input terminal is connected with simulation light modulation letter
Numbers 8, output end is connected with second operational amplifier 5, and first operational amplifier and second operational amplifier output end pass through
Or logical AND photo-coupler 6 connects, 6 output end of photo-coupler is connect with the singlechip chip 1；First operation is put
The inverting input terminal of big device 4 and second operational amplifier 5 is connected separately with laod network.Singlechip chip 1 by the port I/O with
PC completes communication and controls with UI, and singlechip chip 1 has both the purposes of the customized data storage of program storage &.
The control mode of above system is: singlechip chip 1 is by controlling twin-channel first digital regulation resistance 2, bilateral
The tap position in each channel of road digital regulation resistance 2 will come from external reference voltage 10VrefIt is divided；
For each voltage after being divided by as constant voltage, constant current & simulates the reference voltage of 8 servo antrol of dim signal
10 are connected to the non-inverting input terminal of respective operational amplifier；
Constant voltage, constant current & simulate the inverting input terminal of the corresponding operational amplifier of 8 servo antrol of dim signal and each
It is connected from monitoring network/Signal Matching network；
OP1,OP2,OP3Respectively constant voltage, constant current & simulate the corresponding operational amplifier of 8 servo antrol of dim signal；
OP1,OP2,OP3Output end do low-voltage "or" logic, i.e. the voltage of which output it is low that effectively, afterwards and light
Coupler 6U1 is connected；
It is connected with pwm circuit between the photo-coupler 6 and the singlechip chip 1, by pwm circuit output level control
Feedback signal is passed to PWM control single chip computer chip 1 by singlechip chip 1 processed, photo-coupler 6, to complete closing for whole system
Ring control；Photo-coupler 6 also has both primary side and secondary side, thermally the buffer action between cold ground and different earthed systems.
Preferably, the voltage after partial pressure is respectively connected to by first digital regulation resistance 2 and the second digital regulation resistance 3
The non-inverting input terminal of one operational amplifier 4 and second operational amplifier 5.
Preferably, the laod network is LED load 7.
In order to be adapted to the simulation dim signal 8 of input, the simulation dim signal 8 and second digital regulation resistance 3 it
Between be connected with signal attenuation module, port-guard circuit and impedance matching circuit, the signal interference etc. for capableing of discharge port is asked
Topic.
A variety of modifications of embodiment will be readily apparent to those skilled in the art, determine herein
The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, originally
Invention is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein
Consistent widest scope.
Claims (4)
1. a kind of PLC technology Switching Power Supply, which is characterized in that including singlechip chip, be connected on the singlechip chip
First digital regulation resistance and the second digital regulation resistance, connecting on first digital regulation resistance has reference voltage, and is connected with two
A first operational amplifier；
The second digital regulation resistance input terminal is connected with simulation dim signal, and output end is connected with second operational amplifier, institute
It states the first operational amplifier and the first operational amplifier output terminal to connect by low-voltage or logical AND photo-coupler, the optocoupler
Clutch output end is connect with the singlechip chip；First digital regulation resistance and the second digital regulation resistance are by the electricity after partial pressure
Pressure is respectively connected to the non-inverting input terminal of the first operational amplifier and second operational amplifier；First operational amplifier and
The inverting input terminal of two operational amplifiers is connected separately with laod network.
2. PLC technology Switching Power Supply according to claim 1, which is characterized in that the laod network is LED load.
3. PLC technology Switching Power Supply according to claim 1, which is characterized in that the simulation dim signal with it is described
Signal attenuation module, port-guard circuit and impedance matching circuit are connected between second digital regulation resistance.
4. PLC technology Switching Power Supply according to claim 1, which is characterized in that the photo-coupler and the monolithic
Pwm circuit is connected between machine core piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710509225.3A CN107124800B (en) | 2017-06-28 | 2017-06-28 | A kind of PLC technology Switching Power Supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710509225.3A CN107124800B (en) | 2017-06-28 | 2017-06-28 | A kind of PLC technology Switching Power Supply |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107124800A CN107124800A (en) | 2017-09-01 |
| CN107124800B true CN107124800B (en) | 2019-04-16 |
Family
ID=59720104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710509225.3A Active CN107124800B (en) | 2017-06-28 | 2017-06-28 | A kind of PLC technology Switching Power Supply |
Country Status (1)
| Country | Link |
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| CN (1) | CN107124800B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108777898A (en) * | 2018-06-05 | 2018-11-09 | 深圳市廿年科技有限公司 | A kind of knob code switch and intelligent dimming method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201491325U (en) * | 2009-06-16 | 2010-05-26 | 克拉玛依地威诺节能有限责任公司 | LED lamp constant current light modulating device |
| CN202077222U (en) * | 2011-03-15 | 2011-12-14 | 克拉玛依地威诺节能有限责任公司 | Switch power supply with functions of communication, data acquisition and dimming control for light-emitting diode (LED) lamp |
| CN203838587U (en) * | 2014-02-26 | 2014-09-17 | 浙江海洋学院 | Numerical-control direct current source |
| CN104600661A (en) * | 2013-11-02 | 2015-05-06 | 成都市未来合力科技有限责任公司 | Self-resetting over-voltage and under-voltage protection circuit of radar power supply |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10040413B4 (en) * | 2000-08-18 | 2006-11-09 | Infineon Technologies Ag | Circuit arrangement for generating a switching signal for a current-controlled switching power supply |
| TWI277851B (en) * | 2005-02-25 | 2007-04-01 | Winbond Electronics Corp | Adjustable regulated power device |
-
2017
- 2017-06-28 CN CN201710509225.3A patent/CN107124800B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201491325U (en) * | 2009-06-16 | 2010-05-26 | 克拉玛依地威诺节能有限责任公司 | LED lamp constant current light modulating device |
| CN202077222U (en) * | 2011-03-15 | 2011-12-14 | 克拉玛依地威诺节能有限责任公司 | Switch power supply with functions of communication, data acquisition and dimming control for light-emitting diode (LED) lamp |
| CN104600661A (en) * | 2013-11-02 | 2015-05-06 | 成都市未来合力科技有限责任公司 | Self-resetting over-voltage and under-voltage protection circuit of radar power supply |
| CN203838587U (en) * | 2014-02-26 | 2014-09-17 | 浙江海洋学院 | Numerical-control direct current source |
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| Publication number | Publication date |
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| CN107124800A (en) | 2017-09-01 |
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