CN103298220A - Light-emitting diode (LED) lamp modulator compatible with thyristor or common switch AC input - Google Patents
Light-emitting diode (LED) lamp modulator compatible with thyristor or common switch AC input Download PDFInfo
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- CN103298220A CN103298220A CN2013102698066A CN201310269806A CN103298220A CN 103298220 A CN103298220 A CN 103298220A CN 2013102698066 A CN2013102698066 A CN 2013102698066A CN 201310269806 A CN201310269806 A CN 201310269806A CN 103298220 A CN103298220 A CN 103298220A
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Abstract
A light-emitting diode (LED) lamp modulator compatible with thyristor or common switch AC input comprises a rectification filter circuit, a high-frequency conversion switch element, a high-frequency isolation transformer and a current maintaining circuit, wherein the high-frequency isolation transformer and the current maintaining circuit are used for supplying pulse width signals to an MCU chip for enabling the MCU chip to detect whether input is thyristor AC input or common switch AC input, if the input is thyristor AC input, preset current can be generated to maintain a thyristor to work normally, conduction angle reshaping signals are used for providing low-voltage direct current signals capable of tracking conduction angle changing of the thyristor for the MCU chip; meanwhile, the current maintaining circuit is used for providing a starting power source for the MCU control chip to enable the MCU chip to work initially. The LED lamp modulator can be connected between a common switch or the thyristor and an LED lamp of consumers in series to adjust light of the LED lamp through the common switch or the thyristor, and problems of purchasing wrong modulators can be avoided. In addition, the LED lamp modulator can be produced and sold by being matched with LED lamp manufacturers.
Description
Technical field
The present invention relates to a kind of LED light organ of compatible silicon controlled or regular tap AC input.
Background technology
Light carries out light modulation as required, is for energy savings on the one hand, is in order to build certain atmosphere on the other hand.For ohmic electroluminescent lamp, relatively easy as its light modulation of incandescent lamp, can be with using forward position controllable silicon dimmer simple, with low cost just can realize at an easy rate.The LED light fixture has more energy-conservation effect, many countries promote the use of by the whole world, but because the specific (special) requirements of LED lamp, the light modulation of LED lamp can not directly come light modulation with common forward position controllable silicon dimmer, but need with specially designed LED light organ, energising by changing the LED lamp and the duty of outage are recently regulated the brightness of LED lamp, this LED light organ only is suitable for user's family and itself has the forward position controllable silicon dimmer, just can use, as the disclosed LED drive unit of Chinese patent literature CN102497706A and driving method and controller, this controller comprises: dim signal produces circuit, be electrically coupled to controllable silicon dimmer, produce dim signal according to exchanging cut voltage, the angle of flow that the duty ratio of this dim signal is exchanged cut voltage is regulated and is corresponding one by one with the angle of flow that exchanges cut voltage; The dim signal treatment circuit is electrically coupled to dim signal and produces circuit, produces the light modulation processing signals according to dim signal, and the duty ratio of this light modulation processing signals is duty ratio and a default duty ratio sum of dim signal; And ON-OFF control circuit, be electrically coupled to the dim signal treatment circuit, produce control signal according to the light modulation processing signals with the feedback signal relevant with the electric current that flows through LED, with conducting and the shutoff of switching tube in the control switch converter; And existing family does not often have the forward position controllable silicon dimmer, and regular tap is housed merely just, be used for switch lamp, if this lamp is replaced by to can't light modulation behind the LED lamp, if with above-mentioned can with the LED light organ of forward position controllable silicon dimmer also can not be to the light modulation of LED lamp, the disclosed a kind of home switch dimming LED (Light Emitting Diode) light fixture of Chinese patent literature CN202603004, between the switch of led light source and civil power, increase switch power module, the lowering and stabilizing blood pressure module, storage capacitor, tunable optical constant-current LED driver module, one-chip computer module and switch detection module, output is connected to the lowering and stabilizing blood pressure module respectively to the input of switch power module by switch access civil power, tunable optical constant-current LED driver module and switch detection module, the output of lowering and stabilizing blood pressure module is connected to storage capacitor and one-chip computer module respectively, the output of switch detection module and storage capacitor also are connected to one-chip computer module, the output of one-chip computer module also is connected to tunable optical constant-current LED driver module, and the output of tunable optical constant-current LED driver module is connected to led light source and can be used to head it off.; for most consumers; they also do not know difference between these two kinds of dimmers; after often buying back; because the difference of home circuit structure, the LED light organ of buying back but can not use, and has to go again change with businessman; or simply on the shelf, cause crudefiber crop or consumption waste to the consumer; In addition, present LED light organ is made of one with the LED lamp often, if family itself has just installed not with the LED lamp of dimmer, when making the Dimmable LED lamp into, also will cause the idle waste problem of original LED lamp.
Summary of the invention
In order to overcome the problems referred to above, the invention provides a kind of LED light organ of compatible silicon controlled or regular tap AC input, this dimmer only need be serially connected in it just can be realized between consumer's regular tap or controllable silicon and the LED lamp with regular tap or controllable silicon the light modulation of LED lamp, and the problem of not worrying buying wrong dimmer, in addition, the present invention also can follow LED lamp manufacturer to form a complete production network and sell.
Technical scheme of the present invention is: a kind of LED light organ of compatible silicon controlled or regular tap AC input is provided, comprises:
Current rectifying and wave filtering circuit is converted to direct current with the alternating current of civil power input, and output two-way DC power supply, first via power supply supply high frequency alteration switch element wherein, and the second road direct-current power supply is kept current circuit;
The high frequency conversion switch element, according to the pwm signal that the MCU control chip provides, the direct current that current rectifying and wave filtering circuit is provided is converted to high-frequency high-voltage direct-current;
High-frequency isolation transformer is transformed to the low-voltage DC of high frequency with described high-frequency high-voltage direct-current electricity, and the major part of described low-voltage DC is the working power of LED lamp; Another part of low-voltage DC offers the operate as normal power supply that the MCU power circuit is the MCU control chip;
Keeping current circuit, pulse width signal is provided for the MCU control chip, is controllable silicon AC input or regular tap AC input for described MCU control chip detecting; If controllable silicon AC input also can produce scheduled current and keep the controllable silicon operate as normal, angle of flow integer signal is used for providing the low-voltage dc signal of following the tracks of the thyristor operating angle variation to the MCU control chip; Simultaneously, keep current circuit also for the MCU control chip provides the startup power supply, work when initial for the MCU control chip.
As improvement of the present invention, after the MCU control chip obtains to start power supply, press following works:
The initialization of MCU control chip, after initialization is finished, entering power supply judges and the selection step, if pulse width signal is a complete pulse width signal, then judge it is regular tap AC input, the MCU control chip output pwm signal that prestore corresponding with the regular tap number of times given the high frequency conversion switch element, the output of the high-frequency high-voltage direct-current electricity of control high frequency conversion limit switch element; If it is controllable silicon AC input that the width of pulse width signal less than a complete pulse width signal, is then judged, the MCU control chip then carries out the angle of flow and detects, if the angle of flow less than angle of flow threshold value, then carries out cycle detection; If the angle of flow is greater than angle of flow threshold value, the MCU control chip output pwm signal that prestore corresponding with the reverse-blocking tetrode thyristor angle of flow given the high frequency conversion switch element, the output of the high-frequency high-voltage direct-current electricity of control high frequency conversion switch element.
As improvement of the present invention, comprise that also discharge is pressed and discharge feedback circuit and HF switch current detection circuit, after described discharge pressure and the voltage detecting of discharge feedback circuit with the output of high-frequency isolation transformer, store the memory module of MCU control chip into, after the current detecting of described HF switch current detection circuit with the output of high frequency conversion switch element, store the memory module of MCU control chip into; After described MCU control chip will discharge and press value with discharge feedback circuit gained to be converted into corresponding current value, value divided by described HF switch current detection circuit gained, the merchant of gained is within preset range, and then to keep previous pwm signal constant for described MCU control chip; Otherwise described MCU control chip produces new pwm signal, is used for replacing pwm signal and controls the work of described high frequency conversion switch element.
As improvement of the present invention, described controllable silicon is one-way SCR or bidirectional triode thyristor.
This dimmer only need be serially connected in it just can be realized between consumer's regular tap or controllable silicon and the LED lamp with regular tap or controllable silicon the light modulation of LED lamp, and the problem of not worrying buying wrong dimmer, in addition, the present invention also can follow LED lamp manufacturer to form a complete production network and sell.
Description of drawings
Fig. 1 is the schematic diagram of hardware components planar structure of the present invention.
Fig. 2 is the schematic diagram of software section planar structure of the present invention.
Embodiment
See also Fig. 1, Fig. 1 discloses is a kind of LED light organ of compatible silicon controlled or regular tap AC input, comprising:
Current rectifying and wave filtering circuit 1, the alternating current of civil power input is converted to direct current, it can be imported by any one road power supply that controllable silicon AC input 10 or regular tap AC import in 9 two-way, described current rectifying and wave filtering circuit 1 output two-way DC power supply, first via power supply supply high frequency alteration switch element wherein, the second road direct-current power supply is kept current circuit 6;
High frequency conversion switch element 2, according to the pwm signal 44 that MCU control chip 4 provides, the operating state of leading on-off shape of conversion high frequency conversion switch element 2, the direct current that current rectifying and wave filtering circuit 1 is provided is converted to high-frequency high-voltage direct-current;
High-frequency isolation transformer 3, described high-frequency high-voltage direct-current electricity is transformed to the low-voltage DC of high frequency, the major part of described low-voltage DC is the working power of LED lamp, be directly inputted to output rectifier and filter 13, adjust to LED lamp 14 operating voltages by output rectifier and filter 13, thus the driving LED lamp; Another part of low-voltage DC offers MCU power circuit 5 and is the operate as normal power supply of MCU control chip 4;
Keep current circuit 6(in fact this circuit be not only that holding circuit is provided, it also has other function), in keeping current circuit 6, also be provided with the components and parts that extract waveform, extracting pulse width signal and give MCU control chip 4, is controllable silicon AC input or regular tap AC input for described MCU control chip 4 detectings; If controllable silicon AC input also can produce scheduled current and keep the controllable silicon operate as normal, angle of flow integer signal 7 is used for providing the low-voltage dc signal of following the tracks of the thyristor operating angle variation to MCU control chip 4; Simultaneously, keep current circuit 6 and also start power supply 8 for MCU control chip 4 provides, work when supplying MCU control chip 4 initially.
As improvement of the present invention, after MCU control chip 4 obtains to start power supply 8, press following works:
4 initialization 41 of MCU control chip, after initialization 41 is finished, entering power supply judges and selection step 42, if be that (a complete pulse width signal is traditionally arranged to be the pulse width signal that equals the positive and negative certain number of degrees of 180 degree to a complete pulse width signal from keeping the pulse width signal that current circuit 6 obtains, as, extremely spend extremely smaller or equal to 200 degree smaller or equal to 200 degree or greater than 160 greater than 160 degree), then judge it is regular tap AC input 9, MCU control chip 4 output and the regular tap number of times 46 corresponding pwm signals that prestore 44 are given high frequency conversion switch element 2, control the output of the high-frequency high-voltage direct-current electricity of high frequency conversion switch element 2; If pulse width signal is (to be generally more than or equal to 30 degree to spending pulse width signals smaller or equal to 160 less than a complete pulse width signal, the general silicon controlled angle of flow is 30 degree), then judge it is controllable silicon AC input 10,4 of MCU control chips carry out the angle of flow and detect 43, if the angle of flow less than angle of flow threshold value, then carries out cycle detection; If the angle of flow greater than angle of flow threshold value (if angle of flow threshold value be 30 the degree, then spend controllable silicons with regard to conducting greater than 30), the MCU control chip 4 outputs pwm signal that prestore 44 corresponding with the reverse-blocking tetrode thyristor angle of flow given high frequency conversion switch element 2, the output (referring to Fig. 2) of the high-frequency high-voltage direct-current electricity of control high frequency conversion switch element 2.In the present embodiment, described controllable silicon is one-way SCR, also can be bidirectional triode thyristor.
Among the present invention, comprise that also discharge is pressed and discharge feedback circuit 11 and HF switch current detection circuit 12, after described discharge pressure and the voltage detecting of discharge feedback circuit 11 with the output of high-frequency isolation transformer 3, store the memory module of MCU control chip 4 into, after the current detecting of described HF switch current detection circuit 12 with the output of high frequency conversion switch element 2, store the memory module of MCU control chip 4 into; (the concrete algorithm that converts will be prior art after described MCU control chip 4 will discharge and press value with discharge feedback circuit 11 gained to be converted into corresponding current value, here no longer repeat), value divided by described HF switch current detection circuit 12 gained, the merchant of gained is within preset range, and then to keep previous pwm signal 44 constant for described MCU control chip 4; Otherwise described MCU control chip 4 produces new pwm signal 45, is used for replacing pwm signal 44 and controls described high frequency conversion switch element 2 work.
Among the present invention, the pwm signal that prestores 44 that 4 outputs of described MCU control chip and regular tap number of times 46 are corresponding refers to determine according to the switch number of times of regular tap, as, can be predisposed to and open for the first time, the LED lamp is secretly (25% brightness); After switch cuts out, 5 seconds be that brightness when shutting down last time is opened the LED lamp for the first time and is dark (25% brightness) with the external-open; Open in 5 seconds to opening for the second time, LED lamp bright in being (50% brightness) after switch cuts out, is opened in 5 seconds to opening for the third time again, and the LED lamp is bright (100% brightness) entirely; After switch cut out, opening in 5 seconds was to open for the 4th time again, and the LED lamp is dark (25% brightness) again, in this mode that circulates; Certainly, according to user's request, also can be designed to other luminance patterns.
The MCU control chip 4 outputs pwm signal that prestore 44 corresponding with the reverse-blocking tetrode thyristor angle of flow described in the present invention, it is the low-voltage DC that is converted into correspondence according to the angle of controllable silicon rotation by circuit hardware, so that the MCU control chip is followed the tracks of per 1 degree angle of controllable silicon rotation comprehensively, produce corresponding pwm signal, reach 30 degree that start to different the measuring of 180 degree.
Claims (4)
1. the LED light organ compatible silicon controlled or regular tap AC imports is characterized in that, comprising:
Current rectifying and wave filtering circuit (1) is converted to direct current with the alternating current of civil power input, and output two-way DC power supply, first via power supply supply high frequency alteration switch element wherein, and the second road direct-current power supply is kept current circuit (6);
High frequency conversion switch element (2), according to the pwm signal (44) that MCU control chip (4) provides, the direct current that current rectifying and wave filtering circuit (1) is provided is converted to high-frequency high-voltage direct-current;
High-frequency isolation transformer (3) is transformed to the low-voltage DC of high frequency with described high-frequency high-voltage direct-current electricity, and the major part of described low-voltage DC is the working power of LED lamp; Another part of low-voltage DC offers MCU power circuit (5) and is the operate as normal power supply of MCU control chip (4);
Keeping current circuit (6), pulse width signal is provided for MCU control chip (4), is controllable silicon AC input or regular tap AC input for described MCU control chip (4) detecting; If controllable silicon AC input also can produce scheduled current and keep the controllable silicon operate as normal, angle of flow integer signal (7) is used for providing the low-voltage dc signal of following the tracks of the thyristor operating angle variation to MCU control chip (4); Simultaneously, keep current circuit (6) and also start power supply (8) for MCU control chip (4) provides, work when initial for MCU control chip (4).
2. the LED light organ of compatible silicon controlled or regular tap AC input according to claim 1 is characterized in that:
After MCU control chip (4) obtains to start power supply (8), press following works:
MCU control chip (4) initialization (41), after initialization (41) is finished, entering power supply judges and selection step (42), if pulse width signal is a complete pulse width signal, then judge it is regular tap AC input (9), MCU control chip (4) the output pwm signal that prestore (44) corresponding with regular tap number of times (42) given high frequency conversion switch element (2), the output of the high-frequency high-voltage direct-current electricity of control high frequency conversion switch element (2); If pulse width signal, then judges it is controllable silicon AC input (10) less than a complete pulse width signal, MCU control chip (4) then carries out the angle of flow and detects (43), if the angle of flow less than angle of flow threshold value, then carries out cycle detection; If the angle of flow is greater than angle of flow threshold value, MCU control chip (4) the output pwm signal that prestore (44) corresponding with the reverse-blocking tetrode thyristor angle of flow given high frequency conversion switch element (2), the output of the high-frequency high-voltage direct-current electricity of control high frequency conversion switch element (2).
3. the LED light organ of compatible silicon controlled or regular tap AC input according to claim 1 and 2, it is characterized in that: comprise that also discharge is pressed and discharge feedback circuit (11) and HF switch current detection circuit (12), after described discharge pressure and the voltage detecting of discharge feedback circuit (11) with the output of high-frequency isolation transformer (3), store the memory module of MCU control chip (4) into, after the current detecting of described HF switch current detection circuit (12) with the output of high frequency conversion switch element (2), store the memory module of MCU control chip (4) into; After described MCU control chip (4) will discharge and press value with discharge feedback circuit (11) gained to be converted into corresponding current value, value divided by described HF switch current detection circuit (12) gained, the merchant of gained is within preset range, and then to keep previous pwm signal (44) constant for described MCU control chip (4); Otherwise described MCU control chip (4) produces new pwm signal (45), is used for replacing pwm signal (44) and controls described high frequency conversion switch element (2) work.
4. the LED light organ of compatible silicon controlled or regular tap AC input according to claim 1 and 2, it is characterized in that: described controllable silicon is one-way SCR or bidirectional triode thyristor.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102698066A CN103298220A (en) | 2013-07-01 | 2013-07-01 | Light-emitting diode (LED) lamp modulator compatible with thyristor or common switch AC input |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102698066A CN103298220A (en) | 2013-07-01 | 2013-07-01 | Light-emitting diode (LED) lamp modulator compatible with thyristor or common switch AC input |
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| CN103298220A true CN103298220A (en) | 2013-09-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109195255A (en) * | 2018-09-28 | 2019-01-11 | 杰华特微电子（杭州）有限公司 | A kind of thyristor regulating light control method, control circuit and lighting circuit |
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- 2013-07-01 CN CN2013102698066A patent/CN103298220A/en active Pending
Patent Citations (3)
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| CN102083254A (en) * | 2009-11-30 | 2011-06-01 | 成都芯源系统有限公司 | WLED driving circuit and driving method suitable for three-terminal controlled silicon dimmer |
| KR101073289B1 (en) * | 2010-06-10 | 2011-10-12 | 희성전자 주식회사 | A led lamp |
| CN102510618A (en) * | 2011-10-27 | 2012-06-20 | 惠州雷士光电科技有限公司 | Semiconductor lighting driving circuit, semiconductor lighting device, and dimming method for semiconductor lighting device |
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| CN109195255A (en) * | 2018-09-28 | 2019-01-11 | 杰华特微电子（杭州）有限公司 | A kind of thyristor regulating light control method, control circuit and lighting circuit |
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Application publication date: 20130911 |