CN206251385U - A kind of LED drive dynamic control device - Google Patents
A kind of LED drive dynamic control device Download PDFInfo
- Publication number
- CN206251385U CN206251385U CN201621168752.XU CN201621168752U CN206251385U CN 206251385 U CN206251385 U CN 206251385U CN 201621168752 U CN201621168752 U CN 201621168752U CN 206251385 U CN206251385 U CN 206251385U
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- China
- Prior art keywords
- control unit
- main control
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- current
- unit
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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
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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Abstract
The utility model LED control technology field; more particularly to a kind of LED drive dynamic control device; including main control unit, constant-current source circuit, D/A units, over-current protecting unit, audio control unit and power module; the main control unit connects D/A units; D/A units connect constant-current source circuit, and the main control unit connects over-current protecting unit, over-current protecting unit connection constant-current source circuit; the audio control unit connects main control unit, and the power module provides power supply for main control unit；The A/D units and current displaing unit for gathering LED electric signal are also included, the A/D units connect main control unit.The utility model circuit structure is simple; cost is relatively low, the constant current drive control to LED is capable of achieving, while can be effectively protected to LED; and control to LED colour temperature can be realized by sound, can be widely applied to the control of household, public place of entertainment or square ornament lamp.
Description
Technical field
The utility model is related to LED control technology field, more particularly to a kind of LED decorative lamp constant current drive control dress
Put.
Background technology
LED has environmental protection, energy-conservation, efficient advantage, is increasingly widely applied in terms of illumination.At present, it is small
Two kinds of type of drive are generally driven using constant current driving and voltage stabilizing in power LED lighting systems, and when using constant current to drive, LED
The electric current flowed through on lamp will not influenceed by voltage and variation of ambient temperature and LED parameter discretes, can give full play to LED
Various good characteristics, therefore research is simple, the drive device of low cost has important work to the practical application of LED illumination System
With.
Utility model content
The purpose of this utility model is to provide that a kind of circuit structure is simple, low cost, can conveniently control the color of LED
Temperature, and the LED drive dynamic control device with power supply overcurrent protection.
In order to solve the above technical problems, the utility model employs following technical scheme：
A kind of LED drive dynamic control device, including main control unit, constant-current source circuit, D/A units, over-current protecting unit, sound
Control unit and power module, the main control unit connect D/A units, and D/A units connection constant-current source circuit, the main control unit connects
Over-current protecting unit is connect, over-current protecting unit connection constant-current source circuit, the audio control unit connects main control unit, the power supply mould
Block provides power supply for main control unit；The A/D units and current displaing unit for gathering LED electric signal are also included, it is described
A/D units connect main control unit.
In above-mentioned technical proposal, further, the D/A units use TLC5615 chips.
In above-mentioned technical proposal, further, the constant-current source circuit is including operational amplifier U5, by constantan wire coiling
Into sampling resistor R12 and resistance passed through as include stream the device Q5, the operational amplifier U5 of operational amplifier using metal-oxide-semiconductor
R11 connections include stream device Q5, include stream device Q5 connection sampling resistors R12.
In above-mentioned technical proposal, further, the operational amplifier U5 uses LM358 chips.
In above-mentioned technical proposal, further, the sampling resistor is connected in series with current displaing unit.
In above-mentioned technical proposal, further, the over-current protecting unit includes triode Q6 and relay, three pole
Pipe base stage connects single-chip microcomputer, and its collector connection relay, the relay connects constant-current source circuit.
The utility model circuit structure is simple, and cost is relatively low, the constant current drive control to LED is capable of achieving, while can be right
LED is effectively protected, and can realize control to LED colour temperature by sound, can be widely applied to household, public place of entertainment
The control of Suo Huo squares ornament lamp.
Brief description of the drawings
Fig. 1 is the utility model structured flowchart.
Fig. 2 is D/A element circuit schematic diagrames in the utility model.
Fig. 3 is constant-current source circuit schematic diagram in the utility model.
Fig. 4 is power module circuitry schematic diagram in the utility model.
Fig. 5 is audio control unit circuit diagram in the utility model embodiment.
Specific embodiment
The utility model is further described with specific embodiment below in conjunction with the accompanying drawings.
As described in Figure 1, the LED drive dynamic control device is main by main control unit, constant-current source circuit, D/A in the present embodiment
Unit, A/D units, over-current protecting unit, audio control unit and power module composition, wherein main control unit connection D/A units, D/A
Unit connects constant-current source circuit, and constant-current source circuit connects 4 LEDs, for driving LED；Meanwhile, main control unit connection excessively stream
Protection location, over-current protecting unit connection constant-current source circuit, overcurrent protection is played a part of to LED；Audio control unit connection master
Control unit, power module provides power supply for main control unit；A/D units connect main control unit, for gathering LED electric signal and inciting somebody to action
The electric signal of collection is transmitted to main control unit after carrying out A/D conversions.
Wherein, main control unit is a minimum system for 52 series monolithics, and single-chip microcomputer is using Atmel companies here
AT89C52.Using HKS05003 as power module, the operating voltage of 5V is provided for main control unit, its have Width funtion be input into,
The characteristic of High-current output, and without external radiator under full load conditions, physical circuit figure is as shown in Figure 4.
There are important influence the precision of the D/A units present apparatus and working time in the present embodiment, here from TLC5615
Chip, it is a serial 10bit DAC chip, realizes that D/A is changed in the method for 10bit switching capacity Approach by inchmeal, its electricity
Road is as shown in Fig. 2 after through single-chip computer AT89C52 output digit signals to TLC5615, coordinate serial vein when on its DCSCLK pin
Punching, completes the output to the DAOUT1 signals of constant-current source circuit.
Here constant-current source circuit is using operational amplifier U5, the sampling resistor R12 by constantan wire coiling and uses MOS
Pipe 2N6660 includes stream device Q5 as include stream the device Q5, operational amplifier U5 of operational amplifier by resistance R11 connections, includes stream
Device Q5 connection sampling resistors R12.Wherein operational amplifier U5 uses LM358 chips, and it utilizes the substantially special of operational amplifier
Property-imaginary short and empty road.Its input impedance is high, does not shunt substantially, and electric current all flows into sampling resistor R12；Because computing is put
The input of big device U5 not obtaining current, electric current has input control voltage to determine completely, it is achieved thereby that voltage-controlled DC current source
Function, its circuit is as shown in Figure 3.
Such as Fig. 3, the voltage on AD1 ports on sampling resistor R12 is carried out by after A/D unit samplings, sending into single-chip microcomputer
Treatment, and shown on current displaing unit, A/D units use ADC0804 chips in the present embodiment, and it is a middle or low price
The 8bit successive comparison A/D converters of position, are directly connected with single-chip computer AT89C52.Wherein current displaing unit uses 1602
Liquid crystal display.
In the present embodiment, as shown in figure 3, over-current protecting unit uses triode Q6 and relay RTE24005F, lead to
The current value obtained to A/D unit samplings is crossed compared with a setting electric current value, when the current value for collecting is more than the setting
During current value, the guan ports of single-chip computer AT89C52 send out low level turns on Q6, and it is disconnected that constant-current source occurs in the actuating of relay
Road, so as to form overcurrent protection to LED.
Such as Fig. 5, LED colour temperature is controlled using audio control unit realization in the present embodiment, wherein audio control unit collection
The sound of people, and the signal feeding operational amplifier LM358 amplifications that will be collected, are processed, by D/A through single-chip computer AT89C52
Unit TLC5615 chips are exported, and the control to constant-current source circuit output current size are realized, so as to realize to LED colour temperature
Control.
Specification and drawings of the present utility model are considered as illustrative and not restrictive, on the utility model basis
On, those skilled in the art are according to disclosed technology contents, it is not necessary to which performing creative labour just can be to some of them technology
Feature is made some and replaces and deform, in protection domain of the present utility model.
Claims (6)
1. a kind of LED drive dynamic control device, it is characterised in that：Protected including main control unit, constant-current source circuit, D/A units, excessively stream
Shield unit, audio control unit and power module, the main control unit connect D/A units, and D/A units connection constant-current source circuit is described
Main control unit connects over-current protecting unit, and over-current protecting unit connection constant-current source circuit, the audio control unit connects main control unit,
The power module provides power supply for main control unit；Also include and shown for gathering the A/D units and electric current of LED electric signal
Unit, the A/D units connect main control unit.
2. LED drive dynamic control device according to claim 1, it is characterised in that：The D/A units use TLC5615
Chip.
3. LED drive dynamic control device according to claim 1, it is characterised in that：The constant-current source circuit includes computing
Amplifier U5, the sampling resistor R12 by constantan wire coiling and using metal-oxide-semiconductor as operational amplifier include stream device Q5,
The operational amplifier U5 is connected by resistance R11 and is included stream device Q5, includes stream device Q5 connection sampling resistors R12.
4. LED drive dynamic control device according to claim 3, it is characterised in that：The operational amplifier U5 is used
LM358 chips.
5. LED drive dynamic control device according to claim 3, it is characterised in that：The sampling resistor shows with electric current
Unit is connected in series.
6. LED drive dynamic control device according to claim 1, it is characterised in that：The over-current protecting unit includes three
Pole pipe Q6 and relay, the transistor base connect single-chip microcomputer, and its collector connection relay, the relay connects constant current
Source circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621168752.XU CN206251385U (en) | 2016-11-02 | 2016-11-02 | A kind of LED drive dynamic control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621168752.XU CN206251385U (en) | 2016-11-02 | 2016-11-02 | A kind of LED drive dynamic control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206251385U true CN206251385U (en) | 2017-06-13 |
Family
ID=58997250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621168752.XU Expired - Fee Related CN206251385U (en) | 2016-11-02 | 2016-11-02 | A kind of LED drive dynamic control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206251385U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113301687A (en) * | 2021-06-11 | 2021-08-24 | 乐清市银月光电科技有限公司 | Intelligent fire-fighting emergency controller |
-
2016
- 2016-11-02 CN CN201621168752.XU patent/CN206251385U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113301687A (en) * | 2021-06-11 | 2021-08-24 | 乐清市银月光电科技有限公司 | Intelligent fire-fighting emergency controller |
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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 |
Granted publication date: 20170613 Termination date: 20181102 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |