CN103841708B - A kind of control circuit - Google Patents
A kind of control circuit Download PDFInfo
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- CN103841708B CN103841708B CN201210489503.0A CN201210489503A CN103841708B CN 103841708 B CN103841708 B CN 103841708B CN 201210489503 A CN201210489503 A CN 201210489503A CN 103841708 B CN103841708 B CN 103841708B
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- control circuit
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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
Abstract
The embodiment of the invention discloses a kind of control circuit, comprising: rectification unit, between the both positive and negative polarity being connected to AC power, for alternating current is converted to direct current, for whole control circuit provides working power; Temperature measuring unit, for testing environment temperature and the change of environmentally temperature exports the different signals of telecommunication; Control unit, for receiving the signal of telecommunication that described temperature measuring unit exports, controls the rotating speed of the motor be connected with described control unit.Adopt the present invention, the rotating speed of motor can be changed according to the temperature self-adaptation of light fixture or surrounding enviroment, under the prerequisite of saving electric energy, provide good and radiating effect efficiently.
Description
Technical field
The present invention relates to electronic technology field, particularly relate to a kind of control circuit.
Background technology
Under some need to use large-power lamp or needs to use light fixture or the scene of lamp applications in hot environment for a long time, the temperature of light fixture comparatively greatly, if keep the condition of high temperature by the use safety of light fixture and affect greatly useful life for a long time.
In prior art, the normal mode adopting fan to accelerate air flowing solves the heat dissipation problem of light fixture, but fan will maintain constant rotating speed, and when light fixture just uses, temperature is lower, if now open fan cooling, and waste electric energy; And when light fixture is longer for service time, when temperature is higher, the constant wind speed of fan possibly cannot reach desirable radiating effect.
Summary of the invention
Embodiment of the present invention technical problem to be solved is, provides a kind of control circuit.The rotating speed of motor can be changed according to the temperature self-adaptation of light fixture or surrounding enviroment, under the prerequisite of saving electric energy, provide good and radiating effect efficiently.
In order to solve the problems of the technologies described above, embodiments provide a kind of control circuit, comprising:
Rectification unit, between the both positive and negative polarity being connected to AC power, for alternating current is converted to direct current, for whole control circuit provides working power;
Temperature measuring unit, for testing environment temperature and the change of environmentally temperature exports the different signals of telecommunication;
Control unit, for receiving the signal of telecommunication that described temperature measuring unit exports, controls the rotating speed of the motor be connected with described control unit.
Wherein, described rectification unit comprises full-wave rectifying circuit, and the input a of described full-wave rectifying circuit connects AC power positive pole by the stator winding of motor, and input c connects AC power negative pole.
Wherein, described temperature measuring unit comprises at least one thermistor.
Wherein, described temperature measuring unit comprises 4 thermistors, and described 4 thermistors are in parallel again after connecting between two.
Wherein, described control unit comprises relaxation oscillator, the first transistor, divider resistance and controllable silicon; Described relaxation oscillator comprises transistor seconds, the first resistance and the first electric capacity; The base stage of transistor seconds described in a termination after described first resistance and the first Capacitance parallel connection, the output d of rectification unit described in another termination; The emitter of described transistor seconds meets the output b of described rectification unit, and collector electrode meets the output d of described rectification unit by described divider resistance; The base stage of described the first transistor connects described temperature measuring unit, and collector electrode connects the common node of described first resistance, the first electric capacity and transistor seconds base stage, and emitter meets the output b of described rectification unit; Described silicon controlled controls the common node of transistor seconds and described divider resistance described in termination, and anode meets the output b of described rectification unit, and negative electrode meets the output d of described rectification unit.
Wherein, described the first transistor and transistor seconds are PNP type triode.
Wherein, described control circuit also comprises the first current-limiting resistance, and described first current-limiting resistance is connected between the emitter of described transistor seconds and the output b of described rectification unit.
Wherein, described control circuit also comprises filter unit, and described filter unit is in parallel with described rectification unit.
Wherein, described filter unit comprises the second resistance and the second electric capacity, in parallel with described rectification unit after described second resistance and the second capacitances in series.
Wherein, described control circuit also comprises adjustable resistance, between the base stage that described adjustable resistance is connected to described the first transistor and emitter.
Implement the embodiment of the present invention, there is following beneficial effect:
Temperature measuring unit is utilized to detect the variations in temperature of light fixture or surrounding enviroment, and export the corresponding signal of telecommunication to control unit according to different temperature, control unit is according to the rotating speed of corresponding control motor of the electrical signal and then the rotating speed controlling fan, rotation speed of the fan can be reduced when low temperature, rotation speed of the fan is accelerated during high temperature, without the need to manual operation, realize the Automatic adjusument to light fixture or ambient temperature, can under the prerequisite of saving electric energy, play good radiating effect, whole circuit structure is simple, and cost is low, and control precision is high.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the circuit diagram of the first embodiment of control circuit of the present invention;
Fig. 2 is the circuit diagram of the second embodiment of control circuit of the present invention;
Fig. 3 is the circuit diagram of the 3rd embodiment of control circuit of the present invention.
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, be the circuit diagram of the first embodiment of control circuit of the present invention, in the present embodiment, described control circuit comprises: rectification unit 10, temperature measuring unit 20 and control unit 30.
Described rectification unit 10 is connected between the both positive and negative polarity of AC power, for alternating current is converted to direct current, for whole control circuit provides working power;
Described temperature measuring unit 20 is for testing environment temperature and the change of environmentally temperature exports the different signals of telecommunication;
The signal of telecommunication that described control unit 30 exports for receiving described temperature measuring unit, controls the rotating speed of the motor be connected with described control unit.
The different signals of telecommunication is exported and according to the rotating speed of different control motor of the electrical signal by testing environment temperature, the rotating speed changing fan according to the temperature self-adaptation of light fixture or surrounding enviroment can be realized thus, there is provided good and efficient radiating effect, when the temperature of light fixture or surrounding enviroment is lower, control motor speed slows down, the rotating speed of fan is corresponding slack-off, saves electric energy; When the temperature of light fixture or surrounding enviroment is higher, control motor speed and accelerate, the rotating speed of fan is corresponding to accelerate, and plays good radiating effect.
Referring to Fig. 2, is the circuit diagram of the second embodiment of control circuit of the present invention.In the present embodiment, described rectification unit 10 comprises full-wave rectifying circuit 11, and the input a of described full-wave rectifying circuit 11 connects AC power positive pole by the stator winding of motor, and input c connects AC power negative pole.Adopt full-wave rectifying circuit 11 as rectification unit 10, improve the efficiency of rectification, and make rectified current be easy to level and smooth.
Described temperature measuring unit 20 comprises at least one thermistor 21.
Described control unit 30 comprises relaxation oscillator, the first transistor 31, divider resistance 32 and controllable silicon 33; Described relaxation oscillator comprises transistor seconds 34, the first resistance 35 and the first electric capacity 36; The base stage of described first resistance 35 and the first electric capacity 36 transistor seconds 34 described in a termination afterwards in parallel, the output d of full-wave rectifying circuit 11 described in another termination; The emitter of described transistor seconds 34 meets the output b of described full-wave rectifying circuit 11, and collector electrode meets the output d of described full-wave rectifying circuit 11 by described divider resistance; The base stage of described the first transistor 31 connects described thermistor 21, and collector electrode connects the common node of described first resistance 35, first electric capacity 36 and transistor seconds 34 base stage, and emitter meets the output b of described full-wave rectifying circuit 11; The common node of transistor seconds 34 and described divider resistance 32 described in the control termination of described controllable silicon 33, anode meets the output b of described full-wave rectifying circuit 11, and negative electrode meets the output d of described full-wave rectifying circuit 11.
Wherein, form relaxation oscillator by the first transistor 31, first resistance 35 and the first electric capacity 36, its cycle of oscillation, the collector voltage by transistor seconds 34 controlled.Described thermistor 21, as the temperature element of this circuit, is also the base biasing resistor of transistor seconds 34 simultaneously.Along with the change of ambient temperature, also there is corresponding change in the resistance of described thermistor 21, thus change the base bias voltage of described transistor seconds 34 thereupon, and the collector voltage of the transistor seconds 34 made changes.When the temperature of light fixture or surrounding enviroment raises, the resistance of described thermistor 21 reduces, the base bias voltage that described transistor seconds 34 obtains reduces, its collector voltage raises, the charging rate of described first electric capacity 36 accelerates, and the frequency of oscillation of relaxation oscillator also increases, the angle of flow reach of described controllable silicon 33, the voltage at motor two ends raises, and rotation speed of the fan is accelerated; When the temperature of light fixture or surrounding enviroment reduces, the resistance of described thermistor 21 becomes large, described transistor seconds 34 obtains base bias voltage and raises, its collector voltage reduces, the frequency of oscillation of relaxation oscillator also decreases, move after the angle of flow of described controllable silicon 33, the voltage at motor two ends reduces, the spin down of fan.Both the effect of rotation speed of the fan adaptive environment temperature can be reached thus.
Referring to Fig. 3, is the circuit diagram of the 3rd embodiment of control circuit of the present invention.In the present embodiment, described rectification unit is the full-wave rectifying circuit N that 4 diodes are connected to form, and the input a of described full-wave rectifying circuit N connects AC power positive pole by the stator winding of motor M, and input c connects AC power negative pole.Adopt full-wave rectifying circuit N as rectification unit, improve the efficiency of rectification, and make rectified current be easy to level and smooth.
Described temperature measuring unit comprises 4 thermistor R, in parallel again after described 4 thermistor R connect between two.Adopt such connected mode, although the not change of the resistance of whole temperature measuring unit, the resistance of single thermistor R changes slightly and both can embody, and therefore greatly can improve the sensitivity of described temperature measuring unit.
Described control unit comprises relaxation oscillator, the first transistor VT1, divider resistance R2 and controllable silicon SCR; Described relaxation oscillator comprises transistor seconds VT2, the first resistance R1 and the first electric capacity C1; The base stage of transistor seconds VT2 described in a termination after described first resistance R1 and the first electric capacity C1 parallel connection, the output d of full-wave rectifying circuit N described in another termination; The emitter of described transistor seconds VT2 meets the output b of described full-wave rectifying circuit N, and collector electrode meets the output d of described full-wave rectifying circuit N by described divider resistance R2; One end that the base stage of described the first transistor VT1 is in parallel again after connecing 4 thermistors series connection, collector electrode connects the common node of described first resistance R1, the first electric capacity R2 and transistor seconds VT2 base stage, and emitter meets the output b of described full-wave rectifying circuit N; The output d of full-wave rectifying circuit N described in another termination in parallel again after 4 thermistor R connect, the common node of transistor seconds VT2 and described divider resistance R2 described in the control termination of described controllable silicon SCR, anode meets the output b of described full-wave rectifying circuit N, and negative electrode meets the output d of described full-wave rectifying circuit N.
Wherein, described the first transistor VT1 and transistor seconds VT2 is PNP type triode.Described control circuit also comprises the first current limliting electricity R3 and the second current-limiting resistance R4, described first current-limiting resistance R3 is connected between the emitter of described transistor seconds VT2 and the output b of described full-wave rectifying circuit N, for the emitter current limliting of described transistor seconds VT2, described second current-limiting resistance R4 is connected between described first current-limiting resistance R3 and described full-wave rectifying circuit N, is whole control unit and temperature measuring unit current limliting.Described control circuit also comprises filter unit, and described filter unit is in parallel with described rectification unit.Described filter unit comprises the second resistance R5 and the second electric capacity C2, and described second resistance R5 and the second electric capacity C2 is in parallel with described rectification unit after connecting.Described control circuit also comprises adjustable resistance RP, between the base stage that described adjustable resistance RP is connected to described the first transistor VT1 and emitter.Adjustable resistance RP adds, can be artificial by the described adjustable resistance RP resistance of regulation and control so that control the rotating speed of motor, simultaneously also for the condition setting of motor environmentally temperature change rotating speed provides reference.
The concrete control principle of this circuit is substantially identical with the second embodiment, repeats no more herein.
By the description of above-described embodiment, the present invention has the following advantages:
Temperature measuring unit is utilized to detect the variations in temperature of light fixture or surrounding enviroment, and export the corresponding signal of telecommunication to control unit according to different temperature, control unit is according to the rotating speed of corresponding control motor of the electrical signal and then the rotating speed controlling fan, rotation speed of the fan can be reduced when low temperature, rotation speed of the fan is accelerated during high temperature, without the need to manual operation, realize the Automatic adjusument to light fixture or ambient temperature, can under the prerequisite of saving electric energy, play good radiating effect, whole circuit structure is simple, and cost is low, and control precision is high.
One of ordinary skill in the art will appreciate that all or part of flow process realized in above-described embodiment method, that the hardware that can carry out instruction relevant by computer program has come, described program can be stored in a computer read/write memory medium, this program, when performing, can comprise the flow process of the embodiment as above-mentioned each side method.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-OnlyMemory, ROM) or random store-memory body (RandomAccessMemory, RAM) etc.
Above disclosedly be only present pre-ferred embodiments, certainly can not limit the interest field of the present invention with this, therefore according to the equivalent variations that the claims in the present invention are done, still belong to the scope that the present invention is contained.
Claims (9)
1. a control circuit, is characterized in that, comprising:
Rectification unit, between the both positive and negative polarity being connected to AC power, for alternating current is converted to direct current, for whole control circuit provides working power;
Temperature measuring unit, for testing environment temperature and the change of environmentally temperature exports the different signals of telecommunication;
Control unit, for receiving the signal of telecommunication that described temperature measuring unit exports, controls the rotating speed of the motor be connected with described control unit;
Described control unit comprises relaxation oscillator, the first transistor, divider resistance and controllable silicon; Described relaxation oscillator comprises transistor seconds, the first resistance and the first electric capacity; The base stage of transistor seconds described in a termination after described first resistance and the first Capacitance parallel connection, the output d of rectification unit described in another termination; The emitter of described transistor seconds meets the output b of described rectification unit, and collector electrode meets the output d of described rectification unit by described divider resistance; The base stage of described the first transistor connects described temperature measuring unit, and collector electrode connects the common node of described first resistance, the first electric capacity and transistor seconds base stage, and emitter meets the output b of described rectification unit; Described silicon controlled controls the common node of transistor seconds and described divider resistance described in termination, and anode meets the output b of described rectification unit, and negative electrode meets the output d of described rectification unit.
2. control circuit as claimed in claim 1, it is characterized in that, described rectification unit comprises full-wave rectifying circuit, and the input a of described full-wave rectifying circuit connects AC power positive pole by the stator winding of motor, and input c connects AC power negative pole.
3. control circuit as claimed in claim 2, it is characterized in that, described temperature measuring unit comprises at least one thermistor.
4. control circuit as claimed in claim 3, it is characterized in that, described temperature measuring unit comprises 4 thermistors, and described 4 thermistors are in parallel again after connecting between two.
5. control circuit as claimed in claim 4, it is characterized in that, described the first transistor and transistor seconds are PNP type triode.
6. control circuit as claimed in claim 5, it is characterized in that, described control circuit also comprises the first current-limiting resistance, and described first current-limiting resistance is connected between the emitter of described transistor seconds and the output b of described rectification unit.
7. control circuit as claimed in claim 6, it is characterized in that, described control circuit also comprises filter unit, and described filter unit is in parallel with described rectification unit.
8. control circuit as claimed in claim 7, it is characterized in that, described filter unit comprises the second resistance and the second electric capacity, in parallel with described rectification unit after described second resistance and the second capacitances in series.
9. control circuit as claimed in claim 8, it is characterized in that, described control circuit also comprises adjustable resistance, between the base stage that described adjustable resistance is connected to described the first transistor and emitter.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210489503.0A CN103841708B (en) | 2012-11-27 | 2012-11-27 | A kind of control circuit |
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| CN201210489503.0A CN103841708B (en) | 2012-11-27 | 2012-11-27 | A kind of control circuit |
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| CN103841708A CN103841708A (en) | 2014-06-04 |
| CN103841708B true CN103841708B (en) | 2016-03-30 |
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| CN104703355A (en) * | 2015-03-23 | 2015-06-10 | 沈阳北星仪表制造有限公司 | Closed-loop control LED power supply |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101206024A (en) * | 2007-12-14 | 2008-06-25 | 广州市雅江光电设备有限公司 | Method for LED lamp IC working temperature |
| CN201260253Y (en) * | 2007-12-30 | 2009-06-17 | 广东博宇水族实业有限公司 | Lamp control device in aquarium box |
| CN101463986A (en) * | 2007-12-21 | 2009-06-24 | 富士迈半导体精密工业（上海）有限公司 | LED lamp |
| CN101770246A (en) * | 2010-01-12 | 2010-07-07 | 福建星网锐捷网络有限公司 | Fan speed-regulating control circuit and speed-regulating fan equipment |
| CN101852351A (en) * | 2010-03-31 | 2010-10-06 | 海洋王照明科技股份有限公司 | Temperature control search lamp and search lamp temperature adjusting and controlling method |
| CN102102575A (en) * | 2011-03-30 | 2011-06-22 | 潍柴动力股份有限公司 | Engine cooling system |
| CN102325404A (en) * | 2011-08-23 | 2012-01-18 | 上海交通大学 | The high-power LED lighting system of Controllable Temperature |
| CN202425136U (en) * | 2011-12-31 | 2012-09-05 | 重庆东灵网络信息技术有限责任公司 | Air-cooled radiating light-emitting diode (LED) lamp |
| CN202524599U (en) * | 2012-01-18 | 2012-11-07 | 佑图物理应用科技发展(武汉)有限公司 | Work state feedback system for stage used LED spotlight |
-
2012
- 2012-11-27 CN CN201210489503.0A patent/CN103841708B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101206024A (en) * | 2007-12-14 | 2008-06-25 | 广州市雅江光电设备有限公司 | Method for LED lamp IC working temperature |
| CN101463986A (en) * | 2007-12-21 | 2009-06-24 | 富士迈半导体精密工业（上海）有限公司 | LED lamp |
| CN201260253Y (en) * | 2007-12-30 | 2009-06-17 | 广东博宇水族实业有限公司 | Lamp control device in aquarium box |
| CN101770246A (en) * | 2010-01-12 | 2010-07-07 | 福建星网锐捷网络有限公司 | Fan speed-regulating control circuit and speed-regulating fan equipment |
| CN101852351A (en) * | 2010-03-31 | 2010-10-06 | 海洋王照明科技股份有限公司 | Temperature control search lamp and search lamp temperature adjusting and controlling method |
| CN102102575A (en) * | 2011-03-30 | 2011-06-22 | 潍柴动力股份有限公司 | Engine cooling system |
| CN102325404A (en) * | 2011-08-23 | 2012-01-18 | 上海交通大学 | The high-power LED lighting system of Controllable Temperature |
| CN202425136U (en) * | 2011-12-31 | 2012-09-05 | 重庆东灵网络信息技术有限责任公司 | Air-cooled radiating light-emitting diode (LED) lamp |
| CN202524599U (en) * | 2012-01-18 | 2012-11-07 | 佑图物理应用科技发展(武汉)有限公司 | Work state feedback system for stage used LED spotlight |
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