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39results about How to "Precise dimming" patented technology
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Dimmable LED (Light-Emitting Diode) driving circuit and driving method
ActiveCN102740571AShutdown does not occurSolve flickeringElectrical apparatusElectroluminescent light sourcesTransformerPeak value
The invention provides a dimmable LED (Light-Emitting Diode) driving circuit and a driving method. An input current in a first power-level circuit is controlled as a square wave signal within a rectifier conducting time interval by an input current control circuit, the peak value of the input current is a constant value and meets the requirement of the minimum load current of an electronic transformer, and the valley value of the input current is zero; and the input current is kept at zero within a rectifier nonconducting time interval. The load current of the electronic transformer can be kept larger than the minimum load current, and thus, a normal working state can be kept in the working process, and the problem of LED load flicker caused by the switching off of the electronic transformer is avoided; in addition, information on the input current is detected through a dimmable signal generating circuit so that a dimmable signal for representing information on a conduction angle of a rectifier is obtained, an LED load is precisely dimmed, the dimming range is wide, and the dimming effect is good; and finally, constant-current control for the current of the LED load is realized by an output current control circuit, and therefore, the brightness stability of the LED load is ensured.
Owner:SILERGY SEMICON TECH (HANGZHOU) CO LTD
LED (Light Emitting Diode) illumination intelligent control system
InactiveCN102438378AImprove working environment temperatureReduce heat radiationAc-dc conversionElectric light circuit arrangementPower factorHigh-voltage direct current
The invention relates to an LED (Light Emitting Diode) illumination intelligent control system which comprises a synchronous rectification unit used for providing direct-current power for at least two intelligent power control units, wherein the output end of each intelligent power control unit is connected with a corresponding LED light group unit via an electric wire; and the synchronous rectification unit is connected with each intelligent power control unit by a high-voltage direct-current bus. In the intelligent control system, stable constant-voltage direct current is provided for an LED illumination system by the synchronous rectification unit, so that the whole illumination system can operate under high power factor with less harmonic wave. the corresponding LED light group units are dynamically and precisely dimmed by the intelligent power control units, and the LED operation situation is detected in real time and communication with an external control center is carried out. The intelligent control system has the characteristic of reasonable structure, and is convenient to control, the working environment temperature of an LED light group can be improved, and the reliability and the service life of an LED illumination light can be improved.
Owner:MACMIC SCIENCE & TECHNOLOGY CO LTD
Digital linear dimming method for high-power LED
ActiveCN103458575AEliminate Luma Output NonlinearityEliminate junction temperature variationsElectric light circuit arrangementEnergy saving control techniquesMicrocontrollerMicrocomputer
The invention discloses a digital linear dimming method for a high-power LED and belongs to the technical field of dimming methods. The digital linear dimming method for the high-power LED is characterized by comprising the following steps that firstly, a single-chip microcomputer receives a potentiometer signal, a current signal, a voltage signal and an LED temperature signal and conducts analog-to-digital conversion; secondly, based on the current signal, the voltage signal and the temperature signal, a luminance compensation coefficient A is calculated; thirdly, a lumen value L is calculated, and an output luminance value Lch which is generated after temperature compensation is calculated according to the luminance compensation coefficient A; fourthly, the current Io which needs to be supplied is obtained according to the Lch; fifthly, whether a sampled current signal is equal to the Io or not is judged, if yes, a result is output to a PWM control circuit, and if not, the result is adjusted and then output to the PWM control circuit. The digital linear dimming method for the high-power LED is convenient to operate, accurate in dimming, and suitable for dimming of the high-power LED.
Owner:广西奥顺仪器有限公司
Large power LED digital linear light modulation system
ActiveCN103596325AEliminate junction temperature variationsPrecise dimmingElectric light circuit arrangementCurrent sampleMicrocontroller
The invention discloses a large power LED digital linear light modulation system and belongs to the technical field of an LED light modulation system. The large power LED digital linear light modulation system is technically characterized by comprising a filter and protection circuit, a PWM control circuit and an output filter circuit which are sequentially in circuit connection between a DC power source and an LED light source, wherein the PWM control circuit is in circuit connection with a single-chip microcomputer, the single-chip microcomputer is in circuit connection with a linear potentiometer, a current sampling amplification circuit is arranged between the output filter circuit and the LED light source, the current sampling amplification circuit is connected with the single-chip microcomputer, a welding point side edge of the LED light source is provided with a temperature sensor, and the temperature sensor is connected with the single-chip microcomputer through an ADC analog-to-digital converter. The large power LED digital linear light modulation system aims to have properties of compact structure and accurate light modulation and can be used for light modulation of a large power LED.
Owner:广西奥顺仪器有限公司
Lighting device and receiver
ActiveUS20140072310A1Improve power efficiencyPrecise dimmingElectroluminescent light sourcesClose-range type systemsEffect lightEngineering
There is provided a method and corresponding lighting device (100), and a receiver, which employs code modulation which provides a compatibility of code modulation in a dimmable lighting system. The lighting device comprises means for dimming the output light (102), which employs multiple dimming modes, each representing dimming the light output from lighting device by means of a respective dimming method, and means for embedding a code in the light output (103). The means for embedding a code in the light output employs code modulation which is based on controlling the instantaneous dimmed light output from the lighting device such that the integrated value of the dimmed light output during a time period T is modulated to embed the code. The code may then subsequently be extracted from the modulated light by means of an integrate-and-dump process at a receiver, without knowledge of the dimming method and / or dimming level of the lighting device.
Owner:KONINKLIJKE PHILIPS ELECTRONICS NV
Intelligent multifunctional desk
PendingCN110013112AAdjustable angleMeet the needs of useElectric circuit arrangementsLighting elementsEngineeringDesk
The invention discloses an intelligent multifunctional desk. The intelligent multifunctional desk comprises a fixed desktop, a movable desktop, an adjustable desk leg, an intelligent circuit board, and a control panel, wherein the fixed desktop is arranged at the periphery of the movable desktop and connected with the movable desktop in a pivotal mode, the fixed desktop is also fixedly connected with the adjustable desk leg, the intelligent circuit board is encapsulated at one corner of the fixed desktop and electrically connected with the control panel, the movable desktop, and the adjustabledesk leg, and the control panel is movably connected with one side wall of the movable desktop. According to the intelligent multifunctional desk, the movable desktop with adjustable angle and the adjustable desk leg with adjustable height are arranged, during using by a user, the adjustment of the height of a desk and the adjustment of the angle of a desktop can be realized through the control panel in cooperation with the intelligent circuit board encapsulated in the fixed desktop, and using needs of the user in different states are more easily met .
Owner:NANJING FORESTRY UNIV
Music signal controlled PWM dimming and color modulating LED lamp
InactiveCN107371296APrecise dimmingColor changeElectroluminescent light sourcesSubstation equipmentDigital analog converterHeat generation
The invention relates to a music signal controlled PWM dimming and color modulating LED lamp, which comprises a music signal acquisition module, a signal processing module, a mobile phone APP module, a bluetooth communication module, a digital-to-analog converter, a PWM control module and an LED lamp, and is characterized in that the LED lamp is an RGB LED lamp, the mobile phone APP module is wirelessly connected with the bluetooth communication module, the bluetooth communication module is connected with the digital-to-analog converter, the digital-to-analog converter is connected with the PWM control module, the PWM control module is connected with the LED lamp, and the PWM control module adjusts the color and brightness of the LED lamp through changing the duty ratio of the LED lamp. The corresponding duty ratio of required LED light can be directly calculated in an inverted way through inputting a corresponding parameter according to an algorithm chip and circuit, and dynamic adjustment is performed on the color and illumination under the condition of adjusting the duty ratio. PWM dimming has the advantages that the dimming is more accurate, the color changes faster, the dimming color is brighter, and the dimming mode has more color changes than the traditional mode. Meanwhile, the lamp is low in heat generation, and the efficiency is higher.
Owner:东莞市三恩照明实业有限公司
High-precision light-emitting diode (LED) control circuit and high-precision LED control method and LED drive circuit using the same
ActiveCN102984855APrecise dimmingElectrical apparatusElectroluminescent light sourcesControl powerEngineering
The invention provides a high-precision light-emitting diode (LED) control circuit and a high-precision LED control method and a LED drive circuit using the same, and solves the problem of LED dimming insufficient precision due to the fact that compensating signals in the prior art can not precisely characterize output voltage feedback signals. Compared with the prior art, according to the LED control circuit of the LED drive circuit, reference voltage signals are controlled to be joined into the LED control circuit in significant intervals of enable signals of control power level circuits, and therefore the compensating signals can precisely reflect changes of the output voltage feedback signals and precise dimming is achieved.
Owner:SILERGY SEMICON TECH (HANGZHOU) CO LTD
Image shooting device and image shooting method
ActiveUS20090225182A1Precise dimmingTelevision system detailsPhotometryShooting methodComputer vision
An image shooting device includes an image shooting component, a brightness detector, a flash component, a shift detector, a controller, and a flash amount determining component. The shift detector detects a shift amount of a subject position in a set of image data that has arisen due to shaking of the image shooting device. The controller corrects, on the basis of the detected shift amount, at least one of two sets of image data acquired within non-flash state and flash-emitting state, such that positions of a detection target region with respect to the subject position of the respective sets of image data are substantially matched. The flash amount determining component determines a flash amount of the flash component on the basis of the detected brightness level.
Owner:FUJIFILM CORP
LED constant-current driving device and driving method
InactiveCN110234187AExtended service lifeSolution to short lifeElectrical apparatusElectroluminescent light sourcesMicrocomputerMicrocontroller
The invention provides an LED constant-current driving device and driving method, which is used for controlling display of an LED lamp group. The device comprises a power module, a singlechip microcomputer, a constant-current driving module, an optical signal acquisition module, a photoelectrical signal conversion module, a key control module and a brightness level display module, wherein the constant-current driving module is used for providing a constant current for the LED lamp group, the optical signal acquisition module is used for acquiring an optical signal at fixed time, the photoelectric signal conversion module is used for receiving the optical signal, controlling a current output from the constant-current driving module according to the optical signal and further controlling a current input into the LED lamp group so as to adjust the brightness of the LED lamp group, the key control module is used for outputting a manual signal to the singlechip microcomputer, the singlechipmicrocomputer is used for controlling an output current of the constant-current driving module according to a manual signal and further controlling the current input into the LED lamp group so as toadjust the brightness of the LED lamp group, and the brightness level display module is used for indicating a brightness level of the current LED lamp group. By the device and the method, the servicelifetime of an LED can be prolonged, and energy saving and environmental friendliness can be achieved very well.
Owner:NINGBO UNIVERSITY OF TECHNOLOGY
Electronic ballast for fluorescent lamp
InactiveCN101572988AGood preheating effectExtend your lifeAc-dc conversionElectric lighting sourcesDIACMicrocontroller
The invention discloses an electronic ballast for a fluorescent lamp, which comprises a half-bridge inverter circuit module with an inductor, a singlechip control circuit module, and is also provided with a preheat circuit module and a built-in dimming circuit module, wherein the preheat circuit module is a bidirectional silicon-controlled circuit module controlled by a triode type opto-coupler, a control signal of the preheat circuit module is from the singlechip control circuit module, and a power supply is from the secondary side of the inductor; and the dimming circuit module is an unidirectional silicon-controlled dimming circuit module, a control signal of the dimming circuit module is from the singlechip control circuit module, a power supply of the dimming circuit module is from a 5V power supply of the singlechip control circuit module, and the dimming circuit is used for controlling a ground terminal of the basic half-bridge inverter circuit module. The electronic ballast can adjust the preheating of a fluorescent light tube correspondingly, prolong the service life of the fluorescent light tube, simultaneously shorten the conversion process time of the fluorescent lamp after the preheating is completed, ensure that damages to a light tube when the fluorescent lamp is turned on each time are reduced to minimum, accurately control dimming and has a simple structure.
Owner:时宁立
LED light and color regulation method and system
ActiveCN109661059ADoes not change current pulse amplitudeDoes not change pulse amplitudeElectrical apparatusElectroluminescent light sourcesComputer moduleEngineering
The invention discloses an LED light and color regulation method and system. The system comprises an upper computer, a main communication module, a main controller, a light control system module and an LED lamp array module. The upper computer generates PWM regulation data and transmits the PWM regulation data to the light control module, the light control module generates the PWM wave to controlan LED lamp array for light and color regulation, wherein the PWM regulation data is calculated and obtained through adoption of the genetic simulated annealing algorithm. The genetic simulated annealing algorithm is applied to the optimization solution for the luminous flux of the four-color LED hybrid light source under the multi-constraint constraint with fast convergence speed and high efficiency, the global optimal solution can be obtained with a large probability, and the high luminous flux hybrid light source with the optimal light source performance can be obtained. The method is employed to optimize the hybrid light source to achieve the accurate control of the color temperature of the hybrid light and obtain the optimal display effect at the target color temperature.
Owner:WENZHOU UNIVERSITY
Projector
InactiveUS20140368746A1Reduce noiseReduce heat loadTelevision system detailsColor television detailsDrive motorEngineering
A projector includes a lamp, a ballast, an aperture member including light-blocking plates, a light-blocking plate driving motor, a control section, a light modulation device, and a projection optical system, and the control section controls the ballast and the light-blocking plate driving motor so as to modulate the lamp power based on a luminance of the video signal while fixing the aperture of the aperture member to a constant value in a picture period in accordance with a luminance parameter corresponding to a video signal group in the picture period among a series of the video signals.
Owner:SEIKO EPSON CORP
Dimming mirror and laser lamp
Owner:OCEANKING DONGGUAN LIGHTING TECH +2
APP music intelligent lamp capable of light adjustment and toning
PendingCN107172792AImprove anti-interference abilityImprove securityElectroluminescent light sourcesElectric light circuit arrangementBack calculationColor changes
An APP music intelligent lamp capable of light adjustment and toning comprises a mobile phone APP module, a Bluetooth communication module, a digital-to-analog converter, a PWM control module and a LED lamp, the LED lamp is a RGB LED lamp, the mobile phone APP module is in wireless connection with the Bluetooth communication module, the Bluetooth communication module is connected with the digital-to-analog converter, the digital-to-analog converter is connected with the PWM control module, the PWM control module is connected with the LED lamp, the Bluetooth communication module employs the Bluetooth frequency hopping algorithm and the mobile phone APP module to perform data transmission, the Bluetooth frequency hopping algorithm writes in the mobile phone APP and the Bluetooth communication module, and the PWM control module adjusts the color and the brightness of the LED lamp through changing of the duty ratio of the LED lamp. The APP music intelligent lamp capable of light adjustment and toning can directly perform back-calculation of a corresponding duty ratio of a required LED light through inputting corresponding parameters through the algorithm chip and circuit and perform dynamic adjusting of the color and the illumination in the condition of adjusting the duty ratio, the PWM light adjustment is more accurate in light adjustment, faster in color changing, more beautiful in color of light adjustment and more color changing in the light adjustment mode compared to a traditional mode.
Owner:东莞市三恩照明实业有限公司
Drive circuit of light emitting diode
InactiveCN101600279AEasy to controlPrecise dimmingPoint-like light sourceElectric circuit arrangementsPower flowComputer module
The invention discloses a drive circuit of a light emitting diode, in particular to a drive circuit of the light emitting diode, which can be accurately controlled and accurately dim light. The drive circuit mainly comprises a voltage source for proving working voltage, at least one drive module, at least one light emitting diode and a programmable controller, wherein each drive module comprises a switch circuit and a current and voltage detector respectively. The drive circuit utilizes the programmable controller to connect the switch circuit and the current and voltage detector of each drive module, can adjust a switch state of the switch circuit according to a current signal or a voltage signal of the current and voltage detector and respectively and accurately control current passing through each light emitting diode or voltage applied to each light emitting diode.
Owner:普照光电科技股份有限公司
Automobile headlamp dimming device and control method thereof
PendingCN114084062AGood dimming accuracyFine gear adjustmentVehicle headlampsLighting support devicesGear wheelControl theory
The invention discloses an automobile headlamp dimming device and a control method. The automobile headlamp dimming device comprises a shell (1) and a shell cover (2), and the shell cover (2) is connected to an opening of the shell (1); the device is characterized in that a stepping motor (3) is arranged in the shell (1), and a ball head assembly is arranged on the shell (1); a screw rod (301) is arranged on an output shaft of the stepping motor (3), the ball head assembly comprises a driving gear (6), and the screw rod (301) is meshed with the driving gear (6); the stepping motor (3) is started, under the action of the screw rod (301) and the driving gear (6), the stepping motor (3) can drive the ball head of the ball head assembly to move, and therefore the angle of the automobile headlamp is adjusted. According to the automobile headlamp dimming device and the control method, the structure is simple, intelligent control can be achieved, and gear adjustment is more refined.
Owner:NINGBO JINGHUA ELECTRONICS TECH
APP intelligent lamp capable of light adjustment and toning
InactiveCN107172762AImprove anti-interference abilityImprove securityElectrical apparatusElectroluminescent light sourcesDigital analog converterBack calculation
An APP intelligent lamp capable of light adjustment and toning comprises a mobile phone APP module, a Bluetooth communication module, a digital-to-analog converter, a PWM control module and a LED lamp, the LED lamp is a RGB LED lamp, the mobile phone APP module is in wireless connection with the Bluetooth communication module, the Bluetooth communication module is connected with the digital-to-analog converter, the digital-to-analog converter is connected with the PWM control module, the PWM control module is connected with the LED lamp, the Bluetooth communication module employs the Bluetooth frequency hopping algorithm and the mobile phone APP module to perform data transmission, the Bluetooth frequency hopping algorithm writes in the mobile phone APP and the Bluetooth communication module, and the PWM control module adjusts the color and the brightness of the LED lamp through changing of the duty ratio of the LED lamp. The APP intelligent lamp capable of light adjustment and toning can directly perform back-calculation of a corresponding duty ratio of a required LED light through inputting corresponding parameters through the algorithm chip and circuit and perform dynamic adjusting of the color and the illumination in the condition of adjusting the duty ratio, the PWM light adjustment is more accurate in light adjustment, faster in color changing, more beautiful in color of light adjustment and more color changing in the light adjustment mode compared to a traditional mode.
Owner:东莞市三恩照明实业有限公司
High power led digital linear dimming method
ActiveCN103458575BEliminate Luma Output NonlinearityEliminate junction temperature variationsElectric light circuit arrangementEnergy saving control techniquesSingle chipControl circuit
Owner:广西奥顺仪器有限公司
High power led digital linear dimming system
ActiveCN103596325BEliminate junction temperature variationsPrecise dimmingElectric light circuit arrangementMicrocomputerCurrent sample
The invention discloses a large power LED digital linear light modulation system and belongs to the technical field of an LED light modulation system. The large power LED digital linear light modulation system is technically characterized by comprising a filter and protection circuit, a PWM control circuit and an output filter circuit which are sequentially in circuit connection between a DC power source and an LED light source, wherein the PWM control circuit is in circuit connection with a single-chip microcomputer, the single-chip microcomputer is in circuit connection with a linear potentiometer, a current sampling amplification circuit is arranged between the output filter circuit and the LED light source, the current sampling amplification circuit is connected with the single-chip microcomputer, a welding point side edge of the LED light source is provided with a temperature sensor, and the temperature sensor is connected with the single-chip microcomputer through an ADC analog-to-digital converter. The large power LED digital linear light modulation system aims to have properties of compact structure and accurate light modulation and can be used for light modulation of a large power LED.
Owner:广西奥顺仪器有限公司
Lighting device and receiver
ActiveUS9407365B2Improve power efficiencyPrecise dimmingElectroluminescent light sourcesClose-range type systemsEffect lightEngineering
There is provided a method and corresponding lighting device (100), and a receiver, which employs code modulation which provides a compatibility of code modulation in a dimmable lighting system. The lighting device comprises means for dimming the output light (102), which employs multiple dimming modes, each representing dimming the light output from lighting device by means of a respective dimming method, and means for embedding a code in the light output (103). The means for embedding a code in the light output employs code modulation which is based on controlling the instantaneous dimmed light output from the lighting device such that the integrated value of the dimmed light output during a time period T is modulated to embed the code. The code may then subsequently be extracted from the modulated light by means of an integrate-and-dump process at a receiver, without knowledge of the dimming method and / or dimming level of the lighting device.
Owner:KONINK PHILIPS ELECTRONICS NV
LED current sharing circuit
InactiveCN105611688AImprove luminous efficiencyImprove reliabilityElectric light circuit arrangementAccelerated agingEngineering
The invention discloses an LED current sharing circuit. The LED current sharing circuit is characterized by comprising multiple LED branches, an LED driving circuit, an input port, an output port, a controller and current sharing switches Q, wherein the input port is connected with the LED driving circuit, the output port and the controller are connected with the LED driving circuit, the LED branches are connected in parallel to the output port, the voltage U0 of the LED branches is the same with that of the LED driving circuit, each LED branch is provided with the corresponding current sharing switches Q, and the output end of each LED branch is connected with the controller. The LED current sharing circuit of the invention can be used to solve the problem that the service life and reliability of LED lamps are reduced due to the fact that the LED lamps in the heavy-current branches tend to light decay, accelerated aging and even quenching when the LED branches are connected in parallel to the same voltage source and the currents in the LED branches are unequal due to the difference of conduction voltage.
Owner:WUHU RUIXIN ELECTRONICS TECH CO LTD
Electric dimming venetian blind device
PendingCN110924837AExquisite structureBeautiful appearanceLight protection screensEngineeringVenetian blinds
The invention provides an electric dimming venetian blind device which includes a U-shaped top groove, venetian blind sheets, a vertical bottom bar, a driving device and a lifting device. The drivingdevice includes a tubular motor and a driving rotating wheel, the lifting device includes a coil tube, a rope winding device, a ladder rope and a lifting rope, the tubular motor is located in the coiltube, the driving rotating wheel is connected to an output shaft of the tubular motor, the driving rotating wheel is coaxially and fixedly connected with the coil tube, the coil tube is placed in theU-shaped top groove, and the two ends of the coil tube are connected to the two ends of the U-shaped top groove through stainless steel rotating wheels; the rope winding device is fixed on the coil tube, the upper end of the ladder rope is fixed to the rope winding device, and the lower end of the ladder rope is connected to the venetian blind sheets in sequence to be fixedly connected with the vertical bottom bar; and the upper end of the lifting rope is fixed to the rope winding device, and the lower end of the lifting rope sequentially penetrates through limiting holes in the venetian blind sheets to be fixedly connected with the vertical bottom bar. The electric dimming venetian blind device has the beneficial effects that a venetian blind can be freely lifted and the dimming functioncan be realized, the noise is small, and natural silent dimming can be realized without notice.
Owner:北京伟业窗饰遮阳帘有限公司
A dimming mirror and a laser lamp
Owner:OCEANKING DONGGUAN LIGHTING TECH +2
A dimmable LED driving circuit and driving method
ActiveCN102740571BShutdown does not occurSolve flickeringElectrical apparatusElectroluminescent light sourcesTransformerPeak value
Owner:SILERGY SEMICON TECH (HANGZHOU) CO LTD
AC phase-cut digital dimming control device and control method
ActiveCN112654114APrecise dimmingImprove dimming accuracyElectrical apparatusEnergy saving control techniquesControl signalHemt circuits
The invention relates to an AC phase-cut digital dimming control device and control method. The device comprises a zero-crossing detection circuit, an MCU main control circuit, a drive circuit, and a phase-cut dimming circuit, wherein the MCU main control circuit is used for receiving a zero-crossing signal detected by the zero-crossing detection circuit, and outputting a zero-crossing compensation control signal according to the zero-crossing signal, the driving circuit is used for receiving the zero-crossing compensation control signal output by the MCU main control circuit, performing level amplitude conversion on the zero-crossing compensation control signal and outputting an MOS / IGBT driving level signal, and the phase-cut dimming circuit is used for receiving the MOS / IGBT driving level signal output by the driving circuit and outputting a phase-cut control signal to a lamp to be dimmed according to the MOS / IGBT driving level signal so as to perform phase-cut dimming on the lamp to be dimmed. According to the invention, the phase-cut control signal is output to the lamp to be dimmed in the next period so as to carry out phase-cut dimming on the lamp to be dimmed, so that accurate dimming can be realized, and the phase-cut dimming accuracy is further improved.
Owner:深圳市福乐沃光电科技有限公司
A kind of AC phase-cut digital dimming control device and control method
ActiveCN112654114BPrecise dimmingImprove dimming accuracyElectrical apparatusEnergy saving control techniquesControl signalHemt circuits
Owner:深圳市福乐沃光电科技有限公司
Dimming processing method, dimming driving device and light source part
ActiveCN112087844APrecise dimmingElectrical apparatusEnergy saving control techniquesComputer hardwareControl signal
The invention discloses a dimming processing method, a dimming driving device and a light source part, and the dimming processing method comprises the steps: a feature obtaining step: obtaining the feature information of a light source; a signal processing step of calculating and generating a driving control signal according to the feature information; and a driving step of outputting a driving control signal to drive the light source to operate. The dimming driving device comprises an information acquisition module, a control module and a driving module, wherein the control module is connected with the information acquisition module and the driving module; the light source part comprises a light source body, and an information storage module and an information output module which are arranged on the light source body; the information output module is connected with the information storage module; and different light sources can be compatible, and the features of the light sources arematched to accurately adjust light.
Owner:蜂联智能(深圳)有限公司
High-precision light-emitting diode (LED) control circuit and high-precision LED control method and LED drive circuit using the same
ActiveCN102984855BPrecise dimmingElectrical apparatusElectroluminescent light sourcesEngineeringControl circuit
In one embodiment, a light-emitting diode (LED) driver can include: (i) a reference voltage control circuit configured to provide a reference voltage signal in response to an enable signal; (ii) a current control circuit configured to control an output current of the LED driver in response to the reference voltage signal; and (iii) the LED driver being configured to drive an LED load when the enable signal is active.
Owner:SILERGY SEMICON TECH (HANGZHOU) CO LTD
Galvanometer dimming tool, method and device
PendingCN113182671AEasy to observePrecise Dimming OperationLaser beam welding apparatusOptical beam deflectionGalvanometer
The invention discloses a galvanometer dimming tool, method and device. The galvanometer dimming tool comprises a body and a dimming structure, the body is provided with a through cavity extending in the axial direction, the dimming structure is arranged in the through cavity and comprises a first dimming plate and a second dimming plate, and the first dimming plate and the second dimming plate are the same in structure; and the two opposite side walls of the first dimming plate are connected to the inner wall of the through cavity, the two opposite side walls of the second dimming plate are connected to the inner wall of the through cavity, the middle of the first dimming plate and the middle of the second dimming plate intersect, and the intersection of the first dimming plate and the second dimming plate is located on the axis of the through cavity. According to the galvanometer dimming tool, the dimming structure has a certain axial length, after the light beam penetrates through the dimming structure and is projected, the deflection angle error of the light beam can be amplified, accurate dimming operation is carried out by observing projection of the dimming structure, accurate dimming can be achieved only by installing the galvanometer dimming tool at an outlet or an inlet of a galvanometer, and the galvanometer dimming tool can be used in different processing environments and is high in adaptability.
Owner:HANS CNC SCI & TECH
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