CN101646289A - Light-adjusting and speed-adjusting control circuit and control method thereof - Google Patents
Light-adjusting and speed-adjusting control circuit and control method thereof Download PDFInfo
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- CN101646289A CN101646289A CN200910100422A CN200910100422A CN101646289A CN 101646289 A CN101646289 A CN 101646289A CN 200910100422 A CN200910100422 A CN 200910100422A CN 200910100422 A CN200910100422 A CN 200910100422A CN 101646289 A CN101646289 A CN 101646289A
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Abstract
The invention relates to a light-adjusting (speed-adjusting) driver circuit and a control method thereof, which are controlled by controlled silicon. The driver circuit comprises a detecting circuit,a control circuit, a reference circuit and an adjusting circuit. The light-adjusting (speed-adjusting) driver circuit is a necessary condition for detecting the operation state of the controlled silicon and providing the operation process of the controlled silicon; the light-adjusting (speed-adjusting) driver circuit outputs alternating current power with controlled silicon cut phase, generates apulse signal, the width of which can synchronously change with the size of the communication angle of the cut phase of the controlled silicon, and controls load power output time dutyfactor; the light-adjusting (speed-adjusting) driver circuit outputs the alternating current power with the controlled silicon cut phase, generates a control reference which can synchronously change with the size of the communication angle of the cut phase of the controlled silicon, and controls the working current of the load; and by adopting a mode for combining the load power output time dutyfactor with the load working current, so that the output adjusting range of the load power is large and the linearity of the adjusting process is good.
Description
Technical field
The present invention relates to a kind of illumination, light modulation (speed governing) field that motor is relevant with electronics, specifically, relate to a kind of illumination, motor-driven light-adjusting and speed-adjusting control circuit and control method that is applicable to that controllable silicon is regulated, belong to illumination, motor circuit and driving method and make the field.
Background technology
CN1843061A, title " are used for the light adjusting circuit of LED lighting apparatus and the device that keeps the TRIAC conducting ", it comprises provides dynamic dummy load, with when owing to the convergent oscillation in startup problem or the circuit, do not provide load to dimmer when the LED electronic device provides sufficient load, when LED and converter electronics thereof provided the abundant electric current that comes from dimmer to import, this dynamic dummy load provided the electric current of reduction.This system generally includes the power supply that electrically is connected to phase controlled light modulator, the AC power output that this phase controlled light modulator electrically is connected to described dimmer converts the converter circuit that the DC power of LED illuminalive power-supply is exported to, dynamic dummy load and converter circuit are parallel to be connected, and mute load response changes its electric current importing in the operation of converter circuit.Its weak point is: the one, and dynamic dummy load changes its electric current and imports in response to the operation of converter circuit, so-called " operation of converter circuit " is exactly that circuit drives (output) operation to LED, that is to say that dynamic dummy load drives the output size in response to the LED of converter circuit, mute load dynamic value reduced when LED driving output was big, otherwise then increase, because this described whole LED converter circuit belongs to capacitive structure, converter circuit LED drives the value of the transformation period point of output, might not be consistent at the load value of this time point with controllable silicon, because, LED converter circuit output amount of decrease appears, it generally is a low valley (output characteristic of PWM switching mode) that produces immediately behind an output of the circuit appearance peak value, should hang down the appearance of valley, the dynamic dummy load response, carry out the load value compensation, but, because the capacitive character feature of circuit, there is a capacitor charge and discharge time difference when this variation is reflected to controllable silicon, will causes the time of dynamic dummy load response one inaccurate (in advance); The 2nd, in this inaccurate time, produce the dynamic dummy load response, will unnecessary electrical piano power loss appears.
Summary of the invention
One of design order of the present invention, designing a kind of one is to solve energy-saving lamp directly to replace conventional incandescent and be applied to the lighting dimming occasion, providing a kind of controllable silicon of using with ordinary incandescent lamp (TRIAC) to regulate civil power interchange cut out-put supply is control signal, produce the electronic drive circuit of electricity-saving lamp pulse duration control (PWM), regulate with the brightness of illumination of realizing energy-saving lamp, have good dimming effect, dimming scope is big, working stability is reliable;
Two of purpose of design of the present invention realizes the parallel running of a plurality of electricity-saving lamp light fixture, realizes the synchronous light modulation of large tracts of land;
Three of purpose of design of the present invention exchanges cut output by regulating the controllable silicon dimmer civil power, can control the drive current of electricity-saving lamp, makes electricity-saving lamp reach expection brightness, the operating current maximum of electricity-saving lamp can from less than 1 milliampere to greater than 1000 milliamperes of variations;
Four of purpose of design of the present invention exchanges cut output by regulating the controllable silicon dimmer civil power, can control electricity-saving lamp and light duty ratio of time, and maximum electricity-saving lamp is lighted the duty ratio of time adjustable range can from 0 to 100%.
Five of purpose of design of the present invention exchanges cut output by regulating the controllable silicon civil power, can control motor speed, moment.
Six of purpose of design of the present invention exchanges cut output by regulating the controllable silicon civil power, and can control motor speed, torque adiustment can from 0 to 100%.
In order to realize above-mentioned purpose of design, the present invention adopts an independently controllable silicon compensating circuit, be arranged on the drive circuit front end, the operating state and the whole circuit load current value testing circuit that adopt controllable silicon triggering and conducting and zero passage to close, accurately produce make-up time and offset, reach energy-conservation, purpose efficiently.
At first, be example with the LED electricity-saving lamp, LED (Lighting Emitting Diode) is a light-emitting diode, is a kind of semiconductor solid luminescence device.It is to utilize the solid semiconductor chip as luminescent material, by charge carrier compound energy of emitting surplus takes place and cause photo emissions in semiconductor, produces monochrome or polychromatic light.The LED illuminating product utilizes LED as the produced ligthing paraphernalia of light source exactly.LED has long, advantages such as efficiency is high, reliability is high, rich color, microminiaturization of life-span as new and effective solid light source, will become the energy-saving and environmental protection type illuminating product of tool development prospect of 21 century.
LED be called as the 4th generation lighting source or green light source, have characteristics such as energy-saving and environmental protection, the life-span is long, volume is little, can be widely used in various lighting fields.As everyone knows: the LED light fixture needs a common PWM pattern constant voltage or a constant-current drive circuit, this drive circuit is the capacitive operation state, and the controllable silicon dimmer that can not directly use with ordinary incandescent lamp is regulated the mode of conductance for alternating current current flow angle the LED light fixture is carried out brightness regulation.The controllable silicon that the present invention uses with ordinary incandescent lamp (TRIAC) dimmer is regulated civil power interchange cut and is output as power supply, and be control signal with this power supply, the circuit of forming LED pulse duration control (PWM) electric drive, thereby make the LED lighting directly replace ordinary incandescent lamp, be applied to the various occasions that need carry out the brightness regulation illumination with controllable silicon (TRIAC) dimmer.
Technical scheme 1: the detection compensation method of light-adjusting and speed-adjusting control circuit, detect controllable silicon by testing circuit and close state and operating current with conducting, trigger current loop when providing controllable silicon in off position by compensating circuit and controllable silicon are kept current circuit when conducting state.
Technical scheme 2: light-adjusting and speed-adjusting control detection compensating circuit, described detection and compensating circuit are that the controllable silicon operating state that is constituted with voltage detecting circuit, current detection circuit, compensating circuit detects and compensating circuit, when voltage detecting circuit detects input power supply zero passage, compensating circuit produces a low resistance state, provides controllable silicon to form the trigger current loop; Current detection circuit and compensating circuit constitute a constant current loop, and the whole circuit electric current is kept electric current being not less than the controllable silicon conducting during control controllable silicon triggering and conducting.
Technical scheme 3: the control method of light-adjusting and speed-adjusting control circuit, the AC power cut conducting angle of exporting with controllable silicon is a foundation, the power output of control load.
Technical scheme 4: the light-adjusting and speed-adjusting control circuit, it comprises Drive and Control Circuit, described Drive and Control Circuit comprises pulse width control circuit and benchmark control circuit, the output duty cycle of pulse width control circuit control load; The operating current of benchmark control circuit control load.
Technical scheme 5: the special-purpose pulse width control circuit of light-adjusting and speed-adjusting, pulse width control circuit are connected in series by time-delay of pulse upper edge and pulse lower edge time-delay two-stage circuit and constitute.
Technical scheme 6: the control method of light-adjusting and speed-adjusting control circuit, the output duty cycle of load and the operating current of load adopt the method for compound adjustment, make the power output adjustable range of load big, the adjustment process good linearity.
The present invention compares with background technology, and the one, with the AC power of exporting after the cut of the controllable silicon dimmer angle of flow, rectification is the circuit working DC power supply; The 2nd, with the AC power of exporting after the cut of the controllable silicon dimmer angle of flow, the direct current irregularity waveform after the rectification is organized into the regular square wave widened pulse signal that changes synchronously with the controllable silicon dimmer angle of flow; The 3rd, with the square wave widened pulse signal after the arrangement, light the time with duty ratio form control electricity-saving lamp, adjust the electricity-saving lamp visual brightness with this duty ratio; The 4th, the square wave widened pulse signal with after the arrangement converts corresponding level to, and is benchmark control electricity-saving lamp operating current with this level value, thereby changes the electricity-saving lamp luminous intensity; The 5th, have an input voltage detection circuit at least, to the AC power of importing after the controllable silicon dimmer cut, carry out the controllable silicon dimmer conducting, closed condition detects; The 6th, have an input current testing circuit at least, electric current is kept in the minimum work after the controllable silicon dimmer conducting detected; The 7th, current control circuit is kept in the triggering and the minimum conducting that have at least a transistor to form controllable silicon dimmer; The 8th, have a pulse duration → level shifting circuit at least, produce electricity-saving lamp operating current benchmark, and be that benchmark is regulated the electricity-saving lamp operating current with this level value; The 9th, the present invention relates to a controllable silicon dimmer running status detection, compensating circuit, conducting and closed condition to controllable silicon dimmer detects, compensates respectively, and, export a widened pulse signal that changes synchronously with the controllable silicon dimmer cut angle of flow; The tenth, the present invention relates to one and can produce the electricity-saving lamp operating current reference circuit that changes synchronously with the controllable silicon dimmer cut angle of flow; And the control electricity-saving lamp operating current and the controllable silicon dimmer cut angle of flow change synchronously, reach the purpose that the electricity-saving lamp luminosity and the controllable silicon dimmer cut angle of flow change synchronously; 11 is to the present invention relates to one can produce the electricity-saving lamp that changes synchronously with the controllable silicon dimmer cut angle of flow and light the duty ratio of time pulse signal generating circuit; And, can control that electricity-saving lamp is lighted duty ratio of time and the controllable silicon dimmer cut angle of flow changes synchronously, reach the purpose that the electricity-saving lamp visual brightness and the controllable silicon dimmer cut angle of flow change synchronously; 12 is to the present invention relates to one can produce electricity-saving lamp and light the duty ratio of time pulse signal and adjust circuit; Can make the signal pulse duty ratio adjust to zero to scope free adjustment absolutely, and, can realize electricity-saving lamp light duty ratio of time from zero to scope free adjustment absolutely; 13 is to the present invention relates to a kind of means that adopt electricity-saving lamp to light duty ratio of time size and electricity-saving lamp operating current size adjusted in concert, realizes that electricity-saving lamp brightness regulation scope more is tending towards the method for linear change.
Description of drawings
Accompanying drawing 1 is the structural representation with the electricity-saving lamp drive circuit of controllable silicon light modulation.
Accompanying drawing 2 is common wall type controllable silicon dimmer electrical block diagrams.
Accompanying drawing 3 is logical construction schematic diagrames of pulse width control circuit.
Accompanying drawing 4 is that output loading is a LED mains isolation mode output-stage circuit structural representation.
Accompanying drawing 5 is that output loading is three primary colors (gas discharge) electricity-saving lamp output-stage circuit structural representation.
Accompanying drawing 6 is that output loading is a small-power direct current machine output-stage circuit structural representation.
Accompanying drawing the 7, the 8th, the schematic diagram of interlock circuit working point output waveform.
The schematic that accompanying drawing 9,10,11 has listed simple adjusting duty ratio respectively, regulated the LED operating current and adopt dimming effect that circuit of the present invention produces merely.
The tool execution mode
Embodiment 1: with reference to accompanying drawing 1～3.Light-adjusting and speed-adjusting control detection compensating circuit, described detection and compensating circuit are to detect and compensating circuit with the controllable silicon operating state that voltage detecting circuit 1, current detection circuit 3, compensating circuit 2 are constituted, when voltage detecting circuit 1 detects input power supply zero passage, compensating circuit 2 produces a low resistance state, provides controllable silicon to form the trigger current loop; 2 one-tenth constant current loops of current detection circuit 1 and compensating circuit structure, the whole circuit electric current is kept electric current being not less than the controllable silicon conducting during control controllable silicon triggering and conducting.
Embodiment 2: on the basis of embodiment 1, the detection compensation method of light-adjusting and speed-adjusting control circuit, detect controllable silicon by testing circuit 1 and close state and operating current with conducting, trigger current loop when providing controllable silicon in off position by compensating circuit 2 and controllable silicon are kept current circuit when conducting state.Described voltage detecting circuit 1 detects controllable silicon conducting or closing state by the change in voltage of SCR AC electricity output, and the trigger current during by 2 pairs of controllable silicon closed conditions of compensating circuit compensates.Described current detection circuit 1 changes by detecting the silicon controlled load current, and the conducting during by 2 pairs of controllable silicon conducting states of compensating circuit is kept electric current and compensated.
The drive controlling method of the LED electricity-saving lamp drive circuit of regulating with common controllable silicon, it comprises LED electricity-saving lamp brightness regulation control signal and LED electricity-saving lamp output Drive and Control Circuit, described LED electricity-saving lamp Drive and Control Circuit produces controllable silicon cut conducting angle value and produces variation duty ratio level pulse signal synchronously, it is signal that described LED electricity-saving lamp drive circuit produces synchronous variation duty cycle pulse level with controllable silicon cut conducting angle value, controls the duty ratio of time of lighting of LED electricity-saving lamp; Described LED electricity-saving lamp drive circuit produces synchronously with controllable silicon cut conducting angle value, and variation duty cycle pulse level is a signal, produce LED electricity-saving lamp operating current benchmark, the operating current of control LED electricity-saving lamp, and adopt the LED electricity-saving lamp to light the mode of duty ratio of time and the synchronous compound adjustment of LED electricity-saving lamp operating current, make LED electricity-saving lamp dimming scope greatly, the good linearity of light modulation process.
Embodiment 2-1: on the basis of embodiment 1, produce the synchronous duty cycle pulse signal that changes by the whole circuit of the wide control of pulse, adjust the adjustable range that the LED electricity-saving lamp is lighted duty ratio of time with controllable silicon cut conducting angle value.
Embodiment 2-2: on the basis of embodiment 1,, produce a LED operating current benchmark that changes synchronously with controllable silicon cut conducting angular dimension by reference circuit.
Embodiment 2-3: on the basis of embodiment 1, produce variation duty cycle pulse signal synchronously, carry out the phase shift adjustment, make the output of duty cycle pulse signal can reach 0 to 100% range through pulse width control circuit with controllable silicon cut conducting angle value.
Embodiment 3: with reference to accompanying drawing 1～3.The light-adjusting and speed-adjusting control circuit, it comprises Drive and Control Circuit, described Drive and Control Circuit comprises pulse width control circuit 9 and benchmark control circuit, the output duty cycle of pulse width control circuit 9 control loads; The operating current of benchmark control circuit control load.
Embodiment 3-1: on the basis of embodiment 3, with the synchronous widened pulse signal that changes of the AC power cut conducting angle of controllable silicon output, by pulse width control circuit, the power output duty ratio control range of expansion load; Or the synchronous widened pulse signal that changes of the AC power cut conducting angle with controllable silicon output, by pulse width control circuit, the power output duty ratio control range of expansion load can reach 0 to 100%.
Embodiment 3-2: on the basis of embodiment 3, pulse width control circuit, constitute by two-stage RC integrating circuit, wherein one-level RC integrating circuit dwindles input pulse width, another grade RC integrating circuit begins pulse-width when making input pulse width reach certain value and enlarges, and the expansion value increases with the increase of input pulse width.
Embodiment 4: on the basis of embodiment 3, and the control method of light-adjusting and speed-adjusting control circuit, the AC power cut conducting angle of exporting with controllable silicon is a foundation, the power output of control load.
Embodiment 4-1: on the basis of embodiment 4, with a synchronous widened pulse signal that changes of the AC power cut conducting angle with controllable silicon output, in the mode of duty ratio of time, the power output of control load; Become reference signal to adjust the operating current of load with a widened pulse conversion of signals that changes synchronously with the AC power cut conducting angle of controllable silicon output.
Embodiment 4-2: on the basis of embodiment 4, with a synchronous widened pulse signal that changes of the AC power cut conducting angle with controllable silicon output, through pulse duration control, the power regulating range of expansion load; Or the synchronous widened pulse signal that changes of the AC power cut conducting angle with controllable silicon output, through pulse duration control, make load output duty cycle scope can reach 0 to 100%.
Embodiment 5: with reference to accompanying drawing 3.The special-purpose pulse width control circuit of light-adjusting and speed-adjusting, pulse width control circuit are connected in series by time-delay of pulse upper edge and pulse lower edge time-delay two-stage circuit and constitute.Pulse width control circuit adopts two-stage RC integrating circuit, one-level RC integrating circuit wherein, make the input pulse upper edge produce a hysteresis phase shift, the pulse lower edge is constant, another grade RC integrating circuit makes the input pulse upper edge constant, begin pulse signals when input pulse width reaches certain value and carry out lower edge hysteresis phase shift, and hysteresis phase shift value increases with the increase of input pulse width.
Embodiment 6: with reference to accompanying drawing 1～3.The control method of light-adjusting and speed-adjusting control circuit, the output duty cycle of load and the operating current of load adopt the method for compound adjustment, make the power output adjustable range of load big, the adjustment process good linearity.
Do with detailed description below in conjunction with 1～5 couple of the present invention of embodiment.
As shown in Figure 1: accompanying drawing 1 circuit 101 is electric main input and controllable silicon dimmer, physical circuit is seen accompanying drawing 2, its output waveform is shown in the A hurdle of accompanying drawing 7～8, represent controllable silicon dimmer output relation (propose this circuit just to explanation mentality of designing of the present invention, the present invention does not comprise this circuit) respectively.
It should be noted that: 1, this circuit adopts voltage, current detection circuit, detect closing and conducting state of controllable silicon dimmer, control one or morely transistorizedly close, conduction value, set up controllable silicon dimmer closing or condition of work during conducting, make controllable silicon dimmer normal operation under the control of this circuit.2, this circuit utilizes controllable silicon dimmer to close or the voltage during conducting or electric current change, produce and the widened pulse signal that controllable silicon dimmer is closed or conducting is synchronous, and with the brightness control signal source of this signal as the LED electricity-saving lamp.
Accompanying drawing 1 circuit 104 comprises parts such as power filter, passive power factor compensation, circuit source of stable pressure, reference potential generation, output duty cycle control, is the key of LED brilliance control.It is for circuit before and after isolating that circuit is provided with a diode, prevents rear portion circuit disturbed one 03 circuit working; 4. filter regulator circuit is conventional power filter, power factor compensation and the zener source of stable pressure with triode expansion stream, and filter circuit carries out filtering, energy storage to the input power supply, and source of stable pressure supplies each element circuit stable working power.5. reference circuit is zener and integrating circuit, and the widened pulse that 1. it export according to voltage detecting circuit obtains a corresponding level through integration, the variation of input pulse width, and the resulting level of integration changes thereupon; Therefore, the reference level value that changes synchronously with the controllable silicon dimmer angle of flow has just been arranged; Simultaneously, zener is provided with a suitable upper limit (with restriction LED electricity-saving lamp maximum operating currenbt) for this level.The benchmark control circuit 6., the level value of 5. exporting with reference circuit is a benchmark, carries out level ratio with the voltage drop that 105 circuit R2 produce, the output corresponding signal to the rest-set flip-flop circuit 8.; 8. the rest-set flip-flop circuit according to time-delay not circuit triggering and benchmark control circuit reset signal 6. 7., forms AND circuit output control 10..1. the triggering signal of exporting from voltage detecting circuit, 10. S1 end, rest-set flip-flop circuit triggering signal 8. input to the S2 end to input to AND circuit after 9. pulse width control circuit is handled, when the S1 end is high level, rest-set flip-flop circuit signal 8. can trigger the Q2 conducting, and the LED electricity-saving lamp is lighted; When the S1 end was low level, rest-set flip-flop circuit signal 8. can not trigger Q2, and Q2 closes, and the LED electricity-saving lamp extinguishes.That is to say: have only when 9. controllable silicon dimmer conducting, pulse width control circuit export high level, the LED electricity-saving lamp is lighted, otherwise then goes out; The size of the controllable silicon dimmer cut angle of flow with changing voltage detecting circuit output pulse width size 1., just determines lighting the time of LED electricity-saving lamp.Thereby, realized that by the controllable silicon dimmer angle of flow be foundation, produce widened pulse, finish by the LED electricity-saving lamp of duty ratio adjustment and light time control (this process repetition rate is the frequency behind the commercial power rectification, the domestic 100Hz that is generally, some country is 120Hz).But, because there is the less shortcoming of change width scope (adjustable range is generally about 15～90%) in controllable silicon dimmer cut conducting angular dimension, 9. (the physical circuit logical construction is seen accompanying drawing 3 to pulse width control circuit, each tie point signal waveform is seen accompanying drawing 7～8) successfully address this problem, this circuit adopts 2 grades of RC integrating circuit, the first order is utilized the RC integrating circuit, make the input pulse upper edge produce a fixing hysteresis phase shift, the time value of hysteresis phase shift is traditionally arranged to be the minimum angle of flow time of controllable silicon dimmer, and, this grade circuit does not have hysteresis to the input pulse lower edge, the U1 output pulse width equals input pulse width and deducts width lag time, when input pulse width greater than lag time during width, U1 has high level output, when input pulse width is equal to or less than lag time during width, the U1 no-output, this shows that the LED electricity-saving lamp minimum time of lighting can be zero.U1 output pulse divides two-way to second level circuit, wherein one road signal directly connects the S1 end of U2, U2 directly produces the output of pulse upper edge according to the S1 end signal, another road signal is through second level RC circuit once more behind the integration, the S2 end that connects U2, because the effect of this integrating circuit, U2 output pulse lower edge is prolonged, and its,, width determined according to input pulse width time expand, input pulse is wide more, the RC charging interval is long more, and the time of lag output is long more, otherwise then short, suitable R C parameter is set, can make circuit begin the pulse signals width when input pulse width reaches certain value and adjust, and adjusted value increases with the increase of input pulse width, the whole circuit maximum of the wide control of this pulse can reach the output of 100% high level.That is to say controllable silicon dimmer cut angle of flow duty cycle signals,, realize that output duty cycle is in 0 to 100% range through pulse width control circuit adjustment 9..The circuit logic structure is seen accompanying drawing 3, and each tie point signal waveform is seen accompanying drawing 7～8.
It should be noted that: 1, this circuit utilizes the controllable silicon dimmer cut conducting angle pulse width signal that front-end circuit provides, lighting the time of control LED electricity-saving lamp, its projecting point is the whole circuit of wide control of pulse of design, adjust the LED electricity-saving lamp and light the adjustable extent of time, realization LED electricity-saving lamp is lighted the duty ratio maximum and can be reached by zero to hundred-percent omnidistance free adjustment.
Accompanying drawing 1 circuit 105 is the non-isolation drive output stages of LED electricity-saving lamp, when AND circuit 10. S1 end be high level, when Q2 is in conducting state, to inductance L 1 charging, the electric current of LED electricity-saving lamp, inductance L 1 increased with the charging interval supply voltage, the corresponding increase of the level of voltage drop on the R2 by LED electricity-saving lamp, Q2, R2, when the level of voltage drop on the R2 greater than reference circuit 5. during the reference level value, 6. the benchmark control circuit overturns, and 8. the rest-set flip-flop circuit is resetted, and 10. reaches Q2 thereby turn-off AND circuit; Q2 closes and has no progeny, and inductance L 1 is discharged to the LED electricity-saving lamp by the loop of itself being made up of LED electricity-saving lamp, diode D2 and inductance L 1; At this moment, 10. AND circuit is output as low level, 8. 7. the time-delay not circuit trigger the rest-set flip-flop circuit again through a set time, thereby 10. 8. the rest-set flip-flop circuit trigger AND circuit once more, Q2 gets back to conducting state, lay equal stress on above-mentioned multiple conducting and turn off process (repetition rate of this process can reach more than the 2MHz).Process as seen thus: reference level just determines benchmark control circuit flip-flop transition 6., thereby decision is by the size of current of LED electricity-saving lamp; 1. reference level exports pulse through 5. integration generation of reference circuit by voltage detecting circuit, voltage detecting circuit is output pulse width big more (that is: the controllable silicon dimmer angle of flow is big more) 1., it is just high more that 5. reference circuit produces the reference level value, the rest-set flip-flop circuit is long more flip-flop transition 8., and the electric current that flows through the LED electricity-saving lamp is just big more; Otherwise: the controllable silicon dimmer angle of flow more little (voltage detecting circuit 1. output pulse width is just more little), it is just low more that 5. reference circuit produces the reference level value, and the benchmark control circuit is short more flip-flop transition 6., and the electric current that flows through the LED electricity-saving lamp is just more little.Thereby, realized that by the controllable silicon dimmer cut angle of flow be foundation, produce LED electricity-saving lamp operating current benchmark, regulate the luminosity of LED electricity-saving lamp with current control mode.
It should be noted that: 1, this circuit utilizes the synchronous pulse width signal of controllable silicon dimmer cut conducting angle of voltage detecting circuit output, the operating current of control LED electricity-saving lamp, design has a reference circuit, produces a LED electricity-saving lamp operating current benchmark that changes synchronously with controllable silicon dimmer cut conducting angular dimension; And, key is that the present invention adopts the LED electricity-saving lamp to light duty ratio of time and the synchronous mode of adjusting of LED electricity-saving lamp operating current, the LED electricity-saving lamp is had: dimming scope is big, light modulation process good linearity, meets vision to the linear relationship that brightness changes, and has more advantage than background technology.
Accompanying drawing 1 circuit 106 is LED electricity-saving lamp luminescence units, is to be worked in groups by one or more LED series connection; Also can with this watt level of LED light fixture be set by one or more groups LED parallel operation.
Carry out the dual regulation of electricity-saving lamp duty cycle of switching and operating current through this circuit, widened electricity-saving lamp brightness regulation scope greatly, accompanying drawing 9～11 listed respectively simple adjusting duty ratio, merely regulate the LED operating current and adopt that the present invention tells on show the row chart.
Embodiment 3: are the application examples that adopt the controllable silicon adjusting with the LED electricity-saving lamp of transformer isolation output with reference to accompanying drawing 4, front end standard EMC that this is routine and bridge rectifier output circuit, controllable silicon dimmer conducting and the detection compensation method of closing, and adopting control circuit and methods such as duty ratio, output current, the control circuit and the method that are adopted with embodiment 1 are identical; Different is: output stage outputs to LED by a transformer, has increased an optocoupler U1 and has carried out the LED overload protection.Do like this and can improve LED electricity-saving lamp electrical security; Circuit output is that owing to there is the loss reason in transformer, its whole energy efficiency index descends to some extent by a transformer and load coupling.
Embodiment 4: with reference to accompanying drawing 5 are application examples that three primary colors (gas discharge) electricity-saving lamp adopts controllable silicon to regulate, front end standard EMC that this is routine and bridge rectifier output circuit, controllable silicon dimmer conducting and the detection compensation method of closing, and adopting control circuit and methods such as duty ratio, output current, the control circuit and the method that are adopted with embodiment 1 are identical; Different is: by the special driving output circuit (CN1386040 of three primary colors (gas discharge) electricity-saving lamp, " a kind of low-harmonic compact type energy-saving lamp electronic ballast "), drive trichromatic energy saving lamp gas discharge lamp tube, realize the purpose that controllable silicon is regulated.
Embodiment 5: with reference to accompanying drawing 6 are application examples that a small-power direct current machine controllable silicon is regulated, control the small-power direct current machine by the present invention, because widened pulse control signal of the present invention and base-level signal, derive from the mains frequency signal of regulating by controllable silicon, this signal repetition period is relatively stable, can realize the stable rotation output torque, its output torque is not influenced by voltage ripple of power network, by be provided with reference circuit 5. with pulse width control circuit RC circuit integration time constant 9., fabulous output torque linear adjustment can be obtained, kilowatt the free adjustment of an output torque on a large scale scope can be realized to the milliwatt level; Simultaneously, control the small-power direct current machine, even under the minimum situation of output torque, still can guarantee the controllable silicon operate as normal by the present invention.Front end standard EMC that this is routine and bridge rectifier output circuit, controllable silicon dimmer conducting and the detection compensation method of closing, and adopt control circuit and methods such as duty ratio, output current, the control circuit and the method that are adopted with embodiment 1 are identical.
Embodiment 6: with reference to accompanying drawing 1～6.The light-adjusting and speed-adjusting control circuit, it comprises Drive and Control Circuit, described drive circuit is to be signal with controllable silicon cut angle pulsewidth, control load power output duty ratio; The signal of described drive circuit is from controllable silicon cut angle pulse width signal, the control load operating current, produce a loaded work piece current reference that changes synchronously with controllable silicon cut angular dimension, and the mode that adopts load power output duty ratio and loaded work piece electric current to adjust synchronously, make load power output adjustable range greatly, the good linearity of adjustment process.
What need understand is: because the present invention realizes electricity-saving lamp is carried out light modulation (speed governing) to detect interchange (or direct current) power input voltage cut angle of flow (or pulse) duty ratio; And, waveform to the input power supply is also insensitive, not only be suitable for adopting common controllable silicon to carry out light modulation (speed governing), be suitable for adopting interchange (or direct current) power supply of numerical control low-frequency pulse width modulated to carry out light modulation (speed governing) equally by the present invention by the present invention; Not only be suitable for LED and three primary colors (gas discharge) electricity-saving lamp and other all kinds of light fixtures that are adapted to the PWM drive pattern adopt common controllable silicon dimmer to carry out light modulation by the present invention; being adapted to direct current machine equally adopts common silicon controlled speed regulator to carry out speed governing by the present invention; therefore; though the foregoing description is to the mentality of designing of the present invention detailed text description of contrasting; but these text descriptions; just the simple text of mentality of designing of the present invention is described; rather than to the restriction of mentality of designing of the present invention; any combination that does not exceed mentality of designing of the present invention; increase or modification, all fall within the scope of protection of the present invention.
Claims (13)
1, a kind of detection compensation method of light-adjusting and speed-adjusting control circuit, it is characterized in that: detect controllable silicon by testing circuit and close state and operating current with conducting, trigger current loop when providing controllable silicon in off position by compensating circuit and controllable silicon are kept current circuit when conducting state.
2, the detection compensation method of light-adjusting and speed-adjusting control circuit according to claim 1, it is characterized in that: voltage detecting circuit is by the change in voltage of SCR AC electricity output, detect controllable silicon conducting or closing state, and the trigger current during to the controllable silicon closed condition compensates by compensating circuit.
3, the detection compensation method of light-adjusting and speed-adjusting control circuit according to claim 1, it is characterized in that: described current detection circuit changes by detecting the silicon controlled load current, and the conducting during to the controllable silicon conducting state is kept electric current and compensated by compensating circuit.
4, a kind of light-adjusting and speed-adjusting control detection compensating circuit, it is characterized in that: described detection and compensating circuit are that the controllable silicon operating state that is constituted with voltage detecting circuit, current detection circuit, compensating circuit detects and compensating circuit, when voltage detecting circuit detects input power supply zero passage, compensating circuit produces a low resistance state, provides controllable silicon to form the trigger current loop; Current detection circuit and compensating circuit constitute a constant current loop, and the whole circuit electric current is kept electric current being not less than the controllable silicon conducting during control controllable silicon triggering and conducting.
5, a kind of control method of light-adjusting and speed-adjusting control circuit is characterized in that: the AC power cut conducting angle with controllable silicon output is a foundation, the power output of control load.
6, the control method of light-adjusting and speed-adjusting control circuit according to claim 5, it is characterized in that: with a synchronous widened pulse signal that changes of the AC power cut conducting angle with controllable silicon output, in the mode of duty ratio of time, the power output of control load; Become reference signal to adjust the operating current of load with a widened pulse conversion of signals that changes synchronously with the AC power cut conducting angle of controllable silicon output.
7, the control method of light-adjusting and speed-adjusting control circuit according to claim 5, it is characterized in that: with a synchronous widened pulse signal that changes of the AC power cut conducting angle with controllable silicon output, through pulse duration control, the power regulating range of expansion load; Or the synchronous widened pulse signal that changes of the AC power cut conducting angle with controllable silicon output, through pulse duration control, make load output duty cycle scope can reach 0 to 100%.
8, a kind of light-adjusting and speed-adjusting control circuit, it comprises Drive and Control Circuit, it is characterized in that: described Drive and Control Circuit comprises pulse width control circuit and benchmark control circuit, the output duty cycle of pulse width control circuit control load; The operating current of benchmark control circuit control load.
9, light-adjusting and speed-adjusting control circuit according to claim 8, it is characterized in that: with the synchronous widened pulse signal that changes of the AC power cut conducting angle of controllable silicon output, by pulse width control circuit, the power output duty ratio control range of expansion load; Or the synchronous widened pulse signal that changes of the AC power cut conducting angle with controllable silicon output, by pulse width control circuit, the power output duty ratio control range of expansion load can reach 0 to 100%.
10, light-adjusting and speed-adjusting control circuit according to claim 8, it is characterized in that: pulse width control circuit, constitute by two-stage RC integrating circuit, wherein one-level RC integrating circuit dwindles input pulse width, another grade RC integrating circuit begins pulse-width when making input pulse width reach certain value and enlarges, and the expansion value increases with the increase of input pulse width.
11, the special-purpose pulse width control circuit of a kind of light-adjusting and speed-adjusting is characterized in that: pulse width control circuit is connected in series by time-delay of pulse upper edge and pulse lower edge time-delay two-stage circuit and constitutes.
12, the special-purpose pulse width control circuit of light-adjusting and speed-adjusting according to claim 11, it is characterized in that: pulse width control circuit adopts two-stage RC integrating circuit, one-level RC integrating circuit wherein, make the input pulse upper edge produce a hysteresis phase shift, the pulse lower edge is constant, another grade RC integrating circuit makes the input pulse upper edge constant, begin pulse signals when input pulse width reaches certain value and carry out lower edge hysteresis phase shift, and hysteresis phase shift value increases with the increase of input pulse width.
13, a kind of control method of light-adjusting and speed-adjusting control circuit is characterized in that: the output duty cycle of load and the operating current of load adopt the method for compound adjustment, make the power output adjustable range of load big, the adjustment process good linearity.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910100422A CN101646289A (en) | 2009-06-29 | 2009-06-29 | Light-adjusting and speed-adjusting control circuit and control method thereof |
| CN2010101930122A CN101868090B (en) | 2009-06-29 | 2010-05-27 | Circuit for dimming or speed regulation control and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910100422A CN101646289A (en) | 2009-06-29 | 2009-06-29 | Light-adjusting and speed-adjusting control circuit and control method thereof |
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| CN101646289A true CN101646289A (en) | 2010-02-10 |
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| CN200910100422A Pending CN101646289A (en) | 2009-06-29 | 2009-06-29 | Light-adjusting and speed-adjusting control circuit and control method thereof |
| CN2010101930122A Expired - Fee Related CN101868090B (en) | 2009-06-29 | 2010-05-27 | Circuit for dimming or speed regulation control and control method |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010101930122A Expired - Fee Related CN101868090B (en) | 2009-06-29 | 2010-05-27 | Circuit for dimming or speed regulation control and control method |
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| CN101868090B (en) | 2013-04-24 |
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