CN105208727A - LED light adjustment control system - Google Patents
LED light adjustment control system Download PDFInfo
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- CN105208727A CN105208727A CN201510591764.7A CN201510591764A CN105208727A CN 105208727 A CN105208727 A CN 105208727A CN 201510591764 A CN201510591764 A CN 201510591764A CN 105208727 A CN105208727 A CN 105208727A
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Abstract
The invention discloses an LED light adjustment control system which comprises a controller, a storage, a rectifier circuit, an IPM module, a drive circuit, a voltage detection circuit, a boosting transformer and a current detection circuit. The controller is connected with a man-machine interface, the storage, a watch dog circuit, the current detection circuit, the voltage detection circuit and the drive circuit. The drive circuit is connected with the IPM module, the IPM module is connected with the rectifier circuit and a filter circuit, the rectifier circuit is further connected with alternating current AC, the filter circuit is further connected with the boosting transformer, and the boosting transformer is further connected with a lamp light load and the other end of the voltage detection circuit. The IPM module is adopted, standard sinusoidal voltage is output, the load adaptability is high, requirements for a power grid are low, pollution is little, efficiency is high, and output waveforms are good. High-precision constant-current control of a lamp light circuit is achieved through the controller, the performance of a light modulator is improved, the system is simple in structure and low in cost, and market competitiveness is enhanced.
Description
Technical field
The present invention relates to a kind of dimming control system, specifically a kind of LED dimming control system.
Background technology
Dimmer is the core control equipment of system for aerial navigation on airport, at present, the dimmer of domestic and international use mainly adopts controllable silicon wave chopping technology, and this dimmer exists the shortcomings such as wave distortion is large, grid requirements is high, serious to electric network pollution, efficiency is low, adaptive load ability.
Summary of the invention
The object of the present invention is to provide a kind of LED dimming control system, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the invention provides following technical scheme:
A kind of LED dimming control system, comprise controller, memory, rectification circuit, IPM module, drive circuit, voltage detecting circuit, step-up transformer and current detection circuit, described controller connects man-machine interface respectively, memory, watchdog circuit, current detection circuit, voltage detecting circuit and drive circuit, drive circuit connects IPM module, IPM module connects rectification circuit and filter circuit respectively, rectification circuit also connects interchange AC, described filter circuit also connects step-up transformer, step-up transformer also connects lighting loads and the voltage detecting circuit other end respectively, lighting loads also connects the current detection circuit other end, described people's connection interface also connects key-press module and display module respectively, described controller is single-chip microcomputer.
As the further scheme of the present invention: described controller adopts 80C196MC.
As the further scheme of the present invention: described man-machine interface adopts chip 8279.
As the further scheme of the present invention: described filter circuit adopts the unlimited gain multi partitioning mode filter in active filter.
As the present invention's further scheme: the amplifier in described active filter adopts LM324.
Compared with prior art, the invention has the beneficial effects as follows: the present invention adopts IPM module, outputting standard sinusoidal voltage, strong, low to grid requirements to adaptive load ability, pollute light, efficiency is high, good output waveform, realize the high-accuracy and constant current control to lighting circuit by controller, improve the performance of dimmer, system configuration is simple, cost is low, enhances the market competitiveness.
Accompanying drawing explanation
Fig. 1 is the circuit structure block diagram of LED dimming control system.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Refer to Fig. 1, in the embodiment of the present invention, a kind of LED dimming control system, comprise controller, memory, rectification circuit, IPM module, drive circuit, voltage detecting circuit, step-up transformer and current detection circuit, controller connects man-machine interface respectively, memory, watchdog circuit, current detection circuit, voltage detecting circuit and drive circuit, drive circuit connects IPM module, IPM module connects rectification circuit and filter circuit respectively, rectification circuit also connects interchange AC, filter circuit also connects step-up transformer, step-up transformer also connects lighting loads and the voltage detecting circuit other end respectively, lighting loads also connects the current detection circuit other end, people's connection interface also connects key-press module and display module respectively, controller is single-chip microcomputer.
Controller adopts 80C196MC.
Man-machine interface adopts chip 8279.
Filter circuit adopts the unlimited gain multi partitioning mode filter in active filter.
Amplifier in active filter adopts LM324.
Operation principle of the present invention is: refer to Fig. 1, system take single-chip microcomputer as controller, voltage detecting circuit, current detection circuit is utilized to gather step-up transformer secondary side voltage and loop current value, send into inner 10 A/D converters of single-chip microcomputer and carry out A/D conversion, after A/D conversion, magnitude of voltage output display, current value and lighting level set point, together through controller process, finally adjust output equivalent sinusoidal pulse width modulation signal.
Exchange AC and obtain direct voltage after rectification circuit, this voltage is connected to IPM module (Intelligent Power Module), the equivalent sine pulse-width signal that single-chip microcomputer exports carries out inversion through overdrive circuit control IPM module to the direct voltage being added in its two ends, the signal exported obtains the adjustable sinusoidal voltage of amplitude after circuit after filtering, voltage after inversion directly sends into lighting loads through step-up transformer, thus change the current value in loop, finally reach set point, can any switching laws lighting level by key-press module, controlled to make electric current by controller when lighting level changes, voltage reaches stationary value fast, complete the switching of lighting level, simultaneously, Circuit Fault on Secondary Transformer magnitude of voltage and loop current value is demonstrated in real time by display module, make the running status of system very clear.During system works, may create the situation such as overvoltage, overcurrent due to some situation, cause IPM module to produce alarm signal, single-chip microcomputer adopts interrupt mode to gather alarm signal.
The present invention adopts IPM module, outputting standard sinusoidal voltage, strong, low to grid requirements to adaptive load ability, pollute light, efficiency is high, good output waveform, the high-accuracy and constant current control to lighting circuit is realized by controller, improve the performance of dimmer, system configuration is simple, and cost is low, enhances the market competitiveness.
To those skilled in the art, obviously the invention is not restricted to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present invention or essential characteristic, the present invention can be realized in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present invention is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the present invention.Any Reference numeral in claim should be considered as the claim involved by limiting.
In addition, be to be understood that, although this specification is described according to execution mode, but not each execution mode only comprises an independently technical scheme, this narrating mode of specification is only for clarity sake, those skilled in the art should by specification integrally, and the technical scheme in each embodiment also through appropriately combined, can form other execution modes that it will be appreciated by those skilled in the art that.
Claims (5)
1. a LED dimming control system, comprise controller, memory, rectification circuit, IPM module, drive circuit, voltage detecting circuit, step-up transformer and current detection circuit, it is characterized in that, described controller connects man-machine interface respectively, memory, watchdog circuit, current detection circuit, voltage detecting circuit and drive circuit, drive circuit connects IPM module, IPM module connects rectification circuit and filter circuit respectively, rectification circuit also connects interchange AC, described filter circuit also connects step-up transformer, step-up transformer also connects lighting loads and the voltage detecting circuit other end respectively, lighting loads also connects the current detection circuit other end, described people's connection interface also connects key-press module and display module respectively, described controller is single-chip microcomputer.
2. LED dimming control system according to claim 1, is characterized in that, described controller adopts 80C196MC.
3. LED dimming control system according to claim 1, is characterized in that, described man-machine interface adopts chip 8279.
4. LED dimming control system according to claim 1, is characterized in that, described filter circuit adopts the unlimited gain multi partitioning mode filter in active filter.
5. LED dimming control system according to claim 4, is characterized in that, the amplifier in described active filter adopts LM324.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510591764.7A CN105208727A (en) | 2015-09-16 | 2015-09-16 | LED light adjustment control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510591764.7A CN105208727A (en) | 2015-09-16 | 2015-09-16 | LED light adjustment control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105208727A true CN105208727A (en) | 2015-12-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510591764.7A Pending CN105208727A (en) | 2015-09-16 | 2015-09-16 | LED light adjustment control system |
Country Status (1)
| Country | Link |
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| CN (1) | CN105208727A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105792444A (en) * | 2016-05-06 | 2016-07-20 | 深圳市华星光电技术有限公司 | Led drive circuit |
| CN108777894A (en) * | 2018-04-08 | 2018-11-09 | 广州大学 | A kind of UV-LED arrays curing light source driver and design method |
-
2015
- 2015-09-16 CN CN201510591764.7A patent/CN105208727A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105792444A (en) * | 2016-05-06 | 2016-07-20 | 深圳市华星光电技术有限公司 | Led drive circuit |
| CN105792444B (en) * | 2016-05-06 | 2018-06-15 | 深圳市华星光电技术有限公司 | Led drive circuit |
| CN108777894A (en) * | 2018-04-08 | 2018-11-09 | 广州大学 | A kind of UV-LED arrays curing light source driver and design method |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151230 |