CN204014152U - A kind of timing LED dot matrix drive part by part circuit - Google Patents
A kind of timing LED dot matrix drive part by part circuit Download PDFInfo
- Publication number
- CN204014152U CN204014152U CN201420058701.6U CN201420058701U CN204014152U CN 204014152 U CN204014152 U CN 204014152U CN 201420058701 U CN201420058701 U CN 201420058701U CN 204014152 U CN204014152 U CN 204014152U
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- China
- Prior art keywords
- dot matrix
- led dot
- led
- row
- constant
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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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- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The utility model relates to a kind of timing LED dot matrix drive part by part circuit, comprises LED dot matrix, and row driver module is suitable for providing the constant-current control module of LED drive current; Each row common port of LED dot matrix is connected with the each constant-current source chip in constant-current control module respectively; Each row common port of LED dot matrix is connected with row driver module, this row driver module comprise be suitable for connecting each row common port for accessing the switch element group of LED dot matrix operating voltage, each switch element in this switch element group is respectively by processor module control, and this processor module is connected with clock chip; The input of the power supply of described timing LED dot matrix drive part by part circuit is connected with a lightning protection circuit.The utility model coordinates with clock chip by processor module, carries out LED control according to the time period, can suitably close at dead of night the LED of corresponding line number, to realize cooling and to reduce the effect of energy consumption.
Description
Technical field
The utility model relates to a kind of timing LED dot matrix drive part by part circuit.
Background technology
LED dot matrix is widely used in lighting field, for example LED street lamp, it has the advantages such as energy-conserving and environment-protective, but LED lamp also has the shortcoming that caloric value is large, if well do not dispel the heat, have a strong impact on the useful life of LED lamp, particularly at dead of night, flow of the people is little, and do not need in too high-intensity light situation, reduce the brightness of LED lamp, can effectively reduce the caloric value of LED, extended the useful life of LED lamp.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of timing LED dot matrix drive part by part circuit, and this drive part by part circuit solves the technical problem that LED dot matrix timing cooling is controlled.
In order to solve the problems of the technologies described above, the utility model provides a kind of timing LED dot matrix drive part by part circuit, comprises LED dot matrix, is suitable for providing the row driver module of LED dot matrix operating voltage, is suitable for providing the constant-current control module of LED drive current; Each row common port of described LED dot matrix is connected with the each constant-current source chip in constant-current control module respectively; Each row common port of described LED dot matrix is connected with row driver module, this row driver module comprises: be connected with each row common port for accessing the switch element group of LED dot matrix operating voltage, each switch element in this switch element group is respectively by a processor module control, and this processor module is connected with clock chip; The input of the power supply of described timing LED dot matrix drive part by part circuit is connected with a lightning protection circuit.
Technique scheme of the present utility model has the following advantages compared to existing technology: the utility model coordinates with clock chip by processor module; carry out LED control according to the time period; can suitably close at dead of night the LED of corresponding line number; to realize the effect of cooling and reduction energy consumption, and be connected to protect whole LED drive circuit with lightning protection circuit.
Brief description of the drawings
For content of the present utility model is more likely to be clearly understood, below the specific embodiment by reference to the accompanying drawings of basis, the utility model is described in further detail, wherein
The control block diagram of Fig. 1 timing LED of the present utility model dot matrix drive part by part circuit;
The structural representation of Fig. 2 timing LED of the present utility model dot matrix drive part by part circuit;
Fig. 3 is the circuit block diagram of lightning protection circuit of the present utility model.
Wherein, constant-current source chip 1, fast conducting diode D1, current-limiting resistance R1, the first piezo-resistance YM1, the second piezo-resistance YM2, discharge tube A1, fuse PF1, indicator light D2, GND, live wire L, zero line N, earth terminal E.
Embodiment
Below in conjunction with drawings and Examples, the utility model is elaborated:
See Fig. 1 and 2, a kind of timing LED dot matrix drive part by part circuit, comprises LED dot matrix, is suitable for providing the row driver module of LED dot matrix operating voltage, is suitable for providing the constant-current control module of LED drive current; Each row common port of described LED dot matrix is connected with the each constant-current source chip 1 in constant-current control module respectively; Each row common port of described LED dot matrix is connected with row driver module, this row driver module comprises: be connected with each row common port for accessing the switch element group of described LED dot matrix operating voltage, the each switch element in this switch element group is respectively by a processor module control; Described processor module is also connected with clock chip, and this clock chip can adopt DS1202, to play time-controlled effect.The input of the power supply of described timing LED dot matrix drive part by part circuit is connected with a lightning protection circuit, the impact of not being struck by lightning for the protection of LED circuit.
Further, in order to detect the temperature of LED dot matrix, in the time of excess Temperature, effectively LED is controlled, described timing LED dot matrix drive part by part circuit also comprises device for monitoring temperature, the end of probe of this device for monitoring temperature is connected in LED dot matrix, and the temperature signal of this device for monitoring temperature collection inputs to described processor module.
See Fig. 2, described constant-current control module comprises some constant-current source chips 1; In described LED dot matrix, after being connected, current output terminal in each LED chip of same row forms a row common port, this row common port be connected with a constant-current source chip respectively (see constant-current source chip 1 in Fig. 2, clear for the sake of simplicity, the corresponding constant-current source chip of other row does not mark); After being connected with the current input terminal in each LED chip of a line, form a line common port, and be connected with respective switch unit (for simplicity's sake, only drawing switch element one, two, three in Fig. 2); Described row driver module is suitable for providing a high potential, i.e. LED dot matrix operating voltage ensures LED chip energy normally, and its anode by DC power supply is connected to obtain high potential.
Described processor module can adopt FPGA or ARM to realize same function.
Described constant-current source chip can adopt NUD4001 family chip or MBI5035 chip, described switch element can adopt field effect transistor or triode to realize, the collector electrode that is triode is connected with direct voltage source, emitter is connected with row common port, field effect transistor adopts similar connected mode, and by single-chip microcomputer by low and high level control base stage or grid, to play the effect of switch element conducting or cut-off.
Described device for monitoring temperature comprises the temperature sensor of being located at end of probe, the AD module being connected with this temperature sensor, and this AD module is connected with described processor module, and this AD module adopts AD7705BR.
Described temperature sensor can adopt contact or contactless, and the transducer of the type such as thermal resistance, thermocouple, IC temperature sensor.Specifically model for example: DS18b20, PT100 platinum resistance temperature sensor, AD590JH both-end IC temperature sensor.
See Fig. 3, described lightning protection circuit comprises: fast conducting diode D1, current-limiting resistance R1, the first piezo-resistance YM1, the second piezo-resistance YM2 and discharge tube A1; Fast conducting diode D1 and current-limiting resistance R1 series connection form the first branch road, and the first piezo-resistance YM1 and the second piezo-resistance YM1 series connection form the second branch road, are connected between zero line N and live wire L after the first branch road and the second branch circuit parallel connection; The tie point of the first piezo-resistance YM1 and the second piezo-resistance YM2 is by discharge tube A1 ground connection GND.Described lightning protection circuit is realized lightning protection by two branch roads that are connected between zero line and live wire; in the time entering without thunder and lightning; two branch roads are all in high-impedance state; when there being thunder and lightning to enter; thunder and lightning is rapidly by the tie point conducting discharge tube electric discharge between the first piezo-resistance and the second piezo-resistance; thunder and lightning is imported in the earth, realize good lightning protection effect, protect described timing LED dot matrix drive part by part circuit.
Described lightning protection circuit also comprises fuse PF1, and the first branch road is connected live wire L with one end after the second branch circuit parallel connection by fuse PF1, and the other end is connected with zero line N.A kind of Thermal Cutoffs when fuse PF1, specification is 16A/250V/115 degree, can provide protection to the circuit of this case.
Lightning protection circuit also comprises indicator light D2, and indicator light D2 is connected between fast conducting diode D1 and current-limiting resistance R1.Indicator light D2, can be luminous in the time that thunder and lightning produces, and thunder and lightning is entered and has indicative function.
Described lightning protection circuit also comprises earth terminal E, is generally used on the circuit of Three-hole socket the direct ground connection GND of earth terminal E.
Obviously, above-described embodiment is only for the utility model example is clearly described, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here without also giving exhaustive to all execution modes.And these belong to apparent variation that spirit of the present invention extended out or variation still among protection scope of the present invention.
Claims (1)
1. a timing LED dot matrix drive part by part circuit, is characterized in that comprising: LED dot matrix, be suitable for providing the row driver module of LED dot matrix operating voltage, and be suitable for providing the constant-current control module of LED drive current;
Each row common port of described LED dot matrix is connected with the each constant-current source chip in constant-current control module respectively;
Each row common port of described LED dot matrix is connected with row driver module, this row driver module comprise be connected with each row common port for accessing the switch element group of LED dot matrix operating voltage, each switch element in this switch element group is respectively by a processor module control, and this processor module is connected with clock chip;
The input of the power supply of described timing LED dot matrix drive part by part circuit is connected with a lightning protection circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420058701.6U CN204014152U (en) | 2014-02-07 | 2014-02-07 | A kind of timing LED dot matrix drive part by part circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420058701.6U CN204014152U (en) | 2014-02-07 | 2014-02-07 | A kind of timing LED dot matrix drive part by part circuit |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420263118.9U Division CN203851343U (en) | 2014-02-07 | 2014-02-07 | Timing LED dot matrix segmented driving circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204014152U true CN204014152U (en) | 2014-12-10 |
Family
ID=52054088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420058701.6U Expired - Fee Related CN204014152U (en) | 2014-02-07 | 2014-02-07 | A kind of timing LED dot matrix drive part by part circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204014152U (en) |
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2014
- 2014-02-07 CN CN201420058701.6U patent/CN204014152U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20141210 Termination date: 20160207 |