CN113267721B - Electronic switch detection circuit applied to LED illumination lamp - Google Patents
Electronic switch detection circuit applied to LED illumination lamp Download PDFInfo
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- CN113267721B CN113267721B CN202110536597.1A CN202110536597A CN113267721B CN 113267721 B CN113267721 B CN 113267721B CN 202110536597 A CN202110536597 A CN 202110536597A CN 113267721 B CN113267721 B CN 113267721B
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- 230000003247 decreasing effect Effects 0.000 claims abstract description 12
- 230000007613 environmental effect Effects 0.000 claims description 21
- 238000005259 measurement Methods 0.000 claims description 20
- 238000004891 communication Methods 0.000 claims description 16
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
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Abstract
The invention belongs to the field of electronic elements, and particularly relates to an electronic switch detection circuit applied to an LED lighting lamp, which comprises an electronic switch, a change direction detection circuit and a mechanical electric switch which are electrically connected, wherein the mechanical electric switch is a power supply circuit main switch of a LED, the change direction detection circuit is used for detecting the increasing or decreasing direction of current on the electronic switch and forming a direction parameter, the direction parameter specifically indicates the increasing or decreasing direction of the current of the circuit and does not indicate the specific flow direction of the current of the circuit, the change direction detection circuit is also used for extracting the acceleration parameter of the change of the current of the circuit from the direction parameter, the acceleration parameter is used for indicating the change rate of the current of the circuit, and the change direction detection circuit is used for closing the mechanical electric switch when the detected direction parameter and the acceleration parameter reach a threshold value and closing the mechanical electric switch under the normal condition.
Description
Technical Field
The invention belongs to the field of electronic elements, and particularly relates to an electronic switch detection circuit applied to an LED lighting lamp.
Background
In the related art, for example, CN2013102225768 discloses an electronic switch detection circuit applied to an LED lighting fixture, which includes an electronic switch, an LED as a load, a discharge path, and a control and detection module, and in operation, the control and detection module can determine the current state of the electronic switch by detecting the voltage change condition of the discharge path during the discharge process, then the control and detection module provides the current state of the electronic switch to the LED, and the LED enters a corresponding working state according to the current state of the electronic switch, so that it is hoped to solve the problem that the LED as the load flickers, however in practical application, the accuracy of the control and detection module itself in the technology is too low, so that there is a certain delay in circuit control, and the problem that the LED flickers still cannot be completely solved in practice.
Disclosure of Invention
The invention aims to provide an electronic switch detection circuit applied to an LED lighting lamp.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: the electronic switch detection circuit comprises an electronic switch, a change direction detection circuit and a mechanical electric switch which are electrically connected, wherein the mechanical electric switch is a main switch of a power supply circuit of the LED, the change direction detection circuit is used for detecting the increasing or decreasing direction of current on the electronic switch and forming a direction parameter, the direction parameter specifically indicates the increasing or decreasing direction of the current and does not indicate the specific flow direction of the current, the change direction detection circuit is also used for extracting the acceleration parameter of the change of the current from the direction parameter, the acceleration parameter is used for indicating the change rate of the current, the change direction detection circuit is used for closing the mechanical electric switch when the direction parameter and the acceleration parameter reach a threshold value, and the mechanical electric switch is closed under the normal condition.
Further, the electronic switch further comprises a buffer circuit, wherein the buffer circuit is specifically configured as a load circuit, one signal input end of the change direction detection circuit is electrically connected with the signal output end of the buffer circuit and is used for transmitting a state signal of the buffer circuit, one signal input end of the buffer circuit is electrically connected with the signal output end of the change direction detection circuit and is used for transmitting a control signal for the buffer circuit, and the buffer circuit is electrically connected with the electronic switch and is used for absorbing redundant current of the electronic switch.
Further, still include history analysis circuit interface, history analysis circuit interface and led circuit, mechanical electric switch all be connected electrically for receiving and recording led circuit, mechanical electric switch's history switch machine signal and forming led circuit, mechanical electric switch's history switch machine data, history analysis circuit interface and communication circuit electricity be connected, communication circuit and host computer electricity be connected, history analysis circuit interface with led circuit, mechanical electric switch's history switch machine data pass through communication circuit and transmit to the host computer, the host computer return and detect auxiliary data based on led circuit, mechanical electric switch's history switch machine data, communication circuit still be connected with direction of change detection circuit electricity, the host computer pass through communication circuit and to direction of change detection circuit and return and detect auxiliary data.
Further, the upper computer is used for predicting the future state of the electronic switch and the control period of the electronic switch according to the historical switching-on and switching-off data of the led circuit and the mechanical electric switch, forming a prediction model, returning detection auxiliary data according to the switching-on and switching-off data of the real-time led circuit and the mechanical electric switch based on the prediction model, and finally sending the detection auxiliary data to the direction detection circuit.
Further, the future state of the electronic switch and the control period of the electronic switch are predicted according to the historical switch data of the led circuit and the mechanical switch, a prediction model is formed, specifically, the control period of the electronic switch is preset firstly, then the control period of the electronic switch is averagely divided into a plurality of short time intervals, the corresponding led circuit and the historical switch data of the mechanical switch are marked for each short time interval, then the corresponding short time intervals are weighted according to the corresponding data quantity of the led circuit and the historical switch data of the mechanical switch marked for each short time interval, the weighted parameters are stored to form an initial prediction model, the short time interval weights are modified according to the updated led circuit and the historical switch data of the mechanical switch in the data perfecting process, so that a dynamically updated prediction model is formed, and the dynamically updated prediction model is used for calling the corresponding short time interval according to the real-time led circuit and the historical switch data of the mechanical switch and predicting the future state of the electronic switch in the current short time interval, so that detection auxiliary data is formed.
Further, an environment factor set influencing the future state of the electronic switch is constructed, a mapping relation between the short time interval and the environment factor corresponding to the short time interval is also built and the environment factor is quantized in the process of weighting the corresponding short time interval according to the corresponding data quantity of the LED circuit marked by each short time interval and the historical switching data of the mechanical switch, the environment factor is enabled to weight the corresponding short time interval, the weighted parameters are stored to form a prediction model with environment influence, the short time interval weighting is modified according to updated environment factors in the data perfecting process, so that a dynamically updated prediction model with environment influence is formed, and the dynamically updated prediction model with environment influence is used for calling the corresponding short time interval according to the real-time LED circuit, the historical switching data of the mechanical switch and the environment factor and predicting the future state of the electronic switch in the current short time interval, so that detection auxiliary data is formed.
Further, the change direction detection circuit specifically comprises a measurement function circuit, a rectifying circuit and a transformation circuit which are electrically connected, wherein the transformation circuit is used for realizing voltage conversion, the rectifying circuit is used for converting alternating current into direct current, the measurement function circuit is used for measuring accurate measurement current so as to determine the increase or decrease direction of circuit current, and the measurement function circuit is also used for extracting acceleration parameters of circuit current change.
Further, the measurement function circuit specifically includes an eight-pin amplifying current measuring chip, two input pins of the amplifying current measuring chip are coupled to a reference resistor R0, two ends of the reference resistor R0 are electrically connected to measurement ends v1+ and V1-, the amplifying current measuring chip is further coupled to a high-frequency signal absorbing element L1 through two pins, and (the high-frequency signal absorbing element L1 specifically adopts magnetic beads), the amplifying current measuring chip is further connected in series to a resistor R1 and a capacitor C1 through two pins.
Advantageous effects
The method has the advantages that at least signals of increasing or decreasing directions of current on the electronic switch always precede the generation of fixed threshold signals, so that the increasing or decreasing directions of the current on the electronic switch and forming direction parameters can represent the characteristics of the current on the electronic switch at the earliest, the acceleration parameters of circuit current change can be extracted from the direction parameters to restore the essential change of the circuit current, so that the time point of closing the mechanical electric switch when the direction parameters and the acceleration parameters reach the threshold values are detected by the change direction detection circuit can be earlier than or equal to the time point of conducting the led lamp by the current, delay can be avoided, and the corresponding passage can be completely disconnected before the led lamp flashes.
Drawings
FIG. 1 is a block diagram of the overall constituent circuitry of an embodiment of the present application;
FIG. 2 is a block diagram of the components of the direction of change detection circuit according to the embodiment of the present application;
fig. 3 is a schematic diagram of a measurement function circuit of an embodiment of the present application.
Detailed Description
In a specific implementation, as shown in fig. 1, an embodiment of the present application includes an electronic switch, a direction-of-change detection circuit, and a mechano-electric switch that are electrically connected, where the mechano-electric switch is a led power supply circuit main switch, the direction-of-change detection circuit is configured to detect a direction of increase or decrease of a current on the electronic switch and form a direction parameter, the direction parameter specifically indicates a direction of increase or decrease of the current and does not indicate a specific flow direction of the current, the direction-of-change detection circuit is further configured to extract an acceleration parameter of a change of the current from the direction parameter, the acceleration parameter is configured to indicate a rate of change of the current, and the direction-of-change detection circuit is configured to close the mechano-electric switch when the direction parameter and the acceleration parameter reach a threshold, and in a normal case, close the mechano-electric switch. In the implementation, the signal of the increasing or decreasing direction of the current on the electronic switch always precedes the generation of the fixed threshold signal, so in the implementation, the increasing or decreasing direction of the current on the electronic switch and the forming of the direction parameter can represent the characteristic of the current on the electronic switch at the earliest, the acceleration parameter of the current change of the circuit can be extracted from the direction parameter to restore the essential change of the current of the circuit, so the time point of closing the mechanical electric switch when the direction parameter and the acceleration parameter reach the threshold value is detected by the change direction detection circuit can be earlier than or equal to the time point of conducting the led lamp by the current, delay can be avoided, and the corresponding passage can be completely disconnected before the led lamp flashes.
In a more specific implementation, the embodiment of the present application further includes a buffer circuit, where the buffer circuit is specifically configured as a load circuit, one signal input of the direction-of-change detection circuit is electrically connected to a signal output of the buffer circuit and is used for transmitting a status signal of the buffer circuit, one signal input of the buffer circuit is electrically connected to a signal output of the direction-of-change detection circuit and is used for transmitting a control signal to the buffer circuit, and the buffer circuit is electrically connected to the electronic switch and is used for absorbing an excessive current of the electronic switch.
In a specific implementation, firstly, one signal input end of the change direction detection circuit is electrically connected with a signal output end of the buffer circuit and acquires a state signal of the transmission buffer circuit, when the state of the electronic switch needs to call the buffer circuit, one signal input end of the buffer circuit is electrically connected with the signal output end of the change direction detection circuit and acquires a control signal of the transmission buffer circuit, and then, the buffer circuit is electrically connected with the electronic switch and absorbs redundant current of the electronic switch.
In more specific implementation, the embodiment of the application also includes a historical analysis circuit interface, the historical analysis circuit interface all be connected with led circuit, mechanical electric switch for receive and record led circuit, mechanical electric switch's historical switch signal and form led circuit, mechanical electric switch's historical switch data, the historical analysis circuit interface be connected with communication circuit electricity, communication circuit and host computer electromechanical connection, the historical analysis circuit interface with led circuit, mechanical electric switch's historical switch data pass through communication circuit and transmit to the host computer, the host computer on the basis of led circuit, mechanical electric switch's historical switch data return and detect auxiliary data, communication circuit still be connected with direction of change detection circuit electricity, the host computer pass through communication circuit and return and detect auxiliary data to direction of change detection circuit.
The history analysis circuit interface is electrically connected with the led circuit and the mechanical electric switch, receives and records the history switching-on and switching-off signals of the led circuit and the mechanical electric switch and forms history switching-on and switching-off data of the led circuit and the mechanical electric switch, the history analysis circuit interface transmits the history switching-on and switching-off data of the led circuit and the mechanical electric switch to the upper computer through the communication circuit, the upper computer returns detection auxiliary data to the change direction detection circuit based on the history switching-on and switching-off data of the led circuit and the mechanical electric switch, the change direction detection circuit can predict the state of the electronic switch based on the returned detection auxiliary data, and the change direction detection circuit can judge the possible state of the electronic switch in advance and can improve the control precision and the response time of the electronic switch.
In implementation, the upper computer is used for predicting the future state of the electronic switch and the control period of the electronic switch according to the historical switching-on and switching-off data of the led circuit and the mechanical electric switch, forming a prediction model, returning detection auxiliary data according to the switching-on and switching-off data of the real-time led circuit and the mechanical electric switch based on the prediction model, and finally sending the detection auxiliary data to the direction detection circuit. In the implementation, the upper computer predicts the future state of the electronic switch and the control period of the electronic switch according to the historical switching-on and switching-off data of the led circuit and the mechanical electric switch, forms a prediction model, returns detection auxiliary data according to the switching-on and switching-off data of the real-time led circuit and the mechanical electric switch based on the prediction model, and finally sends the detection auxiliary data to the direction detection circuit, and the direction detection circuit judges the possible state of the electronic switch and can improve the control precision and the response time of the electronic switch.
The future state of the electronic switch and the control period of the electronic switch are predicted according to the historical switch data of the led circuit and the mechanical switch, a prediction model is formed, specifically, the control period of the electronic switch is preset firstly, then the control period of the electronic switch is averagely divided into a plurality of short time intervals, the corresponding led circuit and the historical switch data of the mechanical switch are marked for each short time interval, then the corresponding short time intervals are weighted according to the corresponding data quantity of the led circuit and the historical switch data of the mechanical switch marked for each short time interval, the weighted parameters are stored to form an initial prediction model, the short time interval weighting is modified according to the updated led circuit and the historical switch data of the mechanical switch in the data perfecting process, a dynamically updated prediction model is formed, and the dynamically updated prediction model is used for calling the corresponding short time interval according to the real-time led circuit and the historical switch data of the mechanical switch and predicting the future state of the electronic switch in the current short time interval, and therefore detection auxiliary data are formed. In the implementation, the dynamically updated prediction model calls a corresponding short time interval according to the historical switching on and off data of the led circuit and the mechanical electric switch in real time and predicts the future state of the electronic switch in the current short time interval, so that detection auxiliary data is formed. The control period of the electronic switch is preset firstly, then the control period of the electronic switch is divided into a plurality of short time intervals averagely, the history switching-on and switching-off data of the corresponding led circuit and the mechanical electric switch are marked for each short time interval, then the corresponding short time intervals are weighted according to the corresponding data quantity of the history switching-on and switching-off data of the led circuit and the mechanical electric switch marked for each short time interval, and the weighted parameters are stored to form an initial prediction model, so that the initial prediction model can be scientifically formed, and a theoretical basis and a data basis are provided for predicting the future state of the electronic switch by the history switching-on and switching-off data.
In a further implementation, an environmental factor set influencing the future state of the electronic switch is constructed, a mapping relation between the short-time interval and the corresponding environmental factor is also built and the environmental factor is quantized in the process of weighting the corresponding short-time interval according to the corresponding data quantity of the led circuit marked by each short-time interval and the history switch data of the mechanical switch, so that the environmental factor also weights the corresponding short-time interval, the weighted parameters are stored to form a prediction model with environmental influence, the short-time interval weighting is modified according to the updated environmental factor in the data perfecting process, so as to form a dynamically updated prediction model with environmental influence, and the dynamically updated prediction model with environmental influence is used for acquiring the corresponding short-time interval and predicting the future state of the electronic switch in the current short-time interval according to the real-time led circuit, the history switch data of the mechanical switch and the environmental factor, thereby forming detection auxiliary data. In the implementation, a dynamically updated prediction model with environmental influence is used for calling a corresponding short-time interval according to the real-time led circuit, the historical switching-on and switching-off data of the mechanical and electrical switch and environmental factors and predicting the future state of the electronic switch in the current short-time interval, so that detection auxiliary data is formed. Therefore, more comprehensive judgment of environmental factors for future states of the electronic switch can be cited, so that the scientificity and the accuracy of judgment are improved.
In a more specific implementation, as shown in fig. 2, the change direction detection circuit specifically includes a measurement function circuit, a rectifying circuit and a transformation circuit that are electrically connected, the transformation circuit is used for implementing voltage conversion, the rectifying circuit is used for converting alternating current into direct current, the measurement function circuit is used for measuring accurate measurement current to determine the increasing or decreasing direction of the circuit current, and is also used for extracting acceleration parameters of the change of the circuit current. As shown in fig. 3, the measurement functional circuit specifically includes an amplifying current measuring chip with eight pins, two input pins of the amplifying current measuring chip are coupled to a reference resistor R0, two ends of the reference resistor R0 are electrically connected to measurement ends v1+ and V1-, the amplifying current measuring chip is further coupled to a high-frequency signal absorbing element L1 through two pins, and (the high-frequency signal absorbing element L1 specifically adopts magnetic beads), and the amplifying current measuring chip is further connected in series to a resistor R1 and a capacitor C1 through two pins. In the implementation, the voltage transformation circuit can firstly convert the output voltage of the electronic switch to meet the processing standard, the rectification circuit is used for converting alternating current after transformation into direct current, the direct current is convenient to detect, the detection precision can be improved, then the accurate measurement current is measured through the measurement function circuit to determine the increasing or decreasing direction of the circuit current, the acceleration parameter of the circuit current change can be extracted, the measurement function circuit in the implementation is electrically connected with the basic digital signal processing circuit, the basic digital signal processing circuit can be electrically connected with the output end of the amplifying current measurement chip, and corresponding parameters and data can be directly processed through the digital circuit and provide a digital signal basis for subsequent control.
Claims (7)
1. The electronic switch detection circuit is characterized by comprising an electronic switch, a change direction detection circuit and a mechanical electric switch which are electrically connected, wherein the mechanical electric switch is a main switch of a LED power supply circuit, the change direction detection circuit is used for detecting the increasing or decreasing direction of current on the electronic switch and forming a direction parameter, the direction parameter specifically indicates the increasing or decreasing direction of the current and does not indicate the specific flowing direction of the current, the change direction detection circuit is also used for extracting the acceleration parameter of the change of the current from the direction parameter, the acceleration parameter is used for indicating the change rate of the current, and the change direction detection circuit is used for closing the mechanical electric switch when detecting that the direction parameter and the acceleration parameter reach a threshold value and closing the mechanical electric switch in a normal condition;
the intelligent control system is characterized by further comprising a history analysis circuit interface, wherein the history analysis circuit interface is electrically connected with the led circuit and the mechanical electric switch and is used for receiving and recording history switching signals of the led circuit and the mechanical electric switch and forming history switching data of the led circuit and the mechanical electric switch, the history analysis circuit interface is electrically connected with the communication circuit, the communication circuit is electrically connected with the upper computer, the history analysis circuit interface transmits the history switching data of the led circuit and the mechanical electric switch to the upper computer through the communication circuit, the upper computer returns detection auxiliary data based on the history switching data of the led circuit and the mechanical electric switch, the communication circuit is electrically connected with the change direction detection circuit, and the upper computer returns the detection auxiliary data to the change direction detection circuit through the communication circuit.
2. The electronic switch detection circuit for use in an LED lighting fixture of claim 1, further comprising a snubber circuit, the snubber circuit being specifically configured as a load circuit, one signal input of the direction-of-change detection circuit being electrically connected to the signal output of the snubber circuit and being configured to transmit a status signal of the snubber circuit, one signal input of the snubber circuit being electrically connected to the signal output of the direction-of-change detection circuit and being configured to transmit a control signal to the snubber circuit, the snubber circuit being electrically connected to the electronic switch and being configured to absorb excess current of the electronic switch.
3. The electronic switch detection circuit for use in an LED lighting fixture of claim 1, wherein the host computer is configured to predict a future state of the electronic switch and a control cycle of the electronic switch according to historical on-off data of the LED circuit and the mechanical switch, and form a prediction model, and based on the prediction model, the host computer returns detection auxiliary data according to on-off data of the LED circuit and the mechanical switch in real time and finally sends the detection auxiliary data to the direction detection circuit.
4. The electronic switch detection circuit for use in an LED lighting fixture of claim 3, wherein the future state of the electronic switch and the control period of the electronic switch are predicted according to the historical switch data of the LED circuit and the mechanical switch, and a prediction model is formed, specifically, the control period of the electronic switch is preset first, then the control period of the electronic switch is divided into a plurality of short time intervals in average, the corresponding LED circuit and the historical switch data of the mechanical switch are marked for each short time interval, then the corresponding short time intervals are weighted according to the corresponding data amount of the LED circuit and the historical switch data of the mechanical switch marked for each short time interval, the weighted parameters are stored to form an initial prediction model, the short time interval weighted according to the updated LED circuit and the historical switch data of the mechanical switch in the data improvement process, and the dynamically updated prediction model is used for retrieving the corresponding interval according to the real-time LED circuit and the historical switch data of the mechanical switch and predicting the current short time interval, so that the future state of the electronic switch is formed.
5. The electronic switch detection circuit for use in an LED lighting fixture of claim 4, wherein an environmental factor set is constructed to influence a future state of the electronic switch, and a mapping relationship between the short-time intervals and corresponding environmental factors is also established and the environmental factors are quantified in a process of assigning weights to the corresponding short-time intervals according to respective data amounts of LED circuits marked by each short-time interval and historical switching machine data of the mechanical switch, so that the environmental factors assign weights to the corresponding short-time intervals, the weighted parameters are stored to form a prediction model with environmental effects, and the short-time intervals are modified according to updated environmental factors in a data perfecting process to form a dynamically updated prediction model with environmental effects, and the dynamically updated prediction model with environmental effects is used for retrieving the corresponding short-time intervals and predicting the future state of the electronic switch in the current short-time interval according to the real-time LED circuits, the historical switching machine data of the mechanical switch and the environmental factors, so as to form detection auxiliary data.
6. The electronic switch detection circuit for use in an LED lighting fixture of claim 1, wherein the change direction detection circuit comprises a measurement function circuit, a rectifier circuit and a transformer circuit electrically connected, wherein the transformer circuit is used for converting voltage, the rectifier circuit is used for converting alternating current into direct current, the measurement function circuit is used for measuring accurate measurement current to determine the direction of increase or decrease of circuit current, and is also used for extracting acceleration parameters of circuit current change.
7. The electronic switch detection circuit for use in an LED lighting fixture of claim 6, wherein said measurement function circuit comprises an eight-pin amplifying current measuring chip, two input pins of the amplifying current measuring chip are coupled to a reference resistor R0, two ends of the reference resistor R0 are electrically connected to the measuring terminals v1+ and V1-, said amplifying current measuring chip is further coupled to a high-frequency signal absorbing element L1 through two pins, and said amplifying current measuring chip is further connected in series to a resistor R1 and a capacitor C1 through two pins.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110536597.1A CN113267721B (en) | 2021-05-17 | 2021-05-17 | Electronic switch detection circuit applied to LED illumination lamp |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110536597.1A CN113267721B (en) | 2021-05-17 | 2021-05-17 | Electronic switch detection circuit applied to LED illumination lamp |
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| Publication Number | Publication Date |
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| CN113267721A CN113267721A (en) | 2021-08-17 |
| CN113267721B true CN113267721B (en) | 2024-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110536597.1A Active CN113267721B (en) | 2021-05-17 | 2021-05-17 | Electronic switch detection circuit applied to LED illumination lamp |
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| CN1739073A (en) * | 2003-01-16 | 2006-02-22 | 国际整流器公司 | Dimming ballast control IC with flash suppression circuit |
| CN103168504A (en) * | 2010-10-19 | 2013-06-19 | 皇家飞利浦电子股份有限公司 | LED circuit arrangement |
| CN103293473A (en) * | 2013-06-06 | 2013-09-11 | 东莞博用电子科技有限公司 | Electronic switch detecting circuit applied to LED illuminating lamp |
| CN204231720U (en) * | 2014-12-03 | 2015-03-25 | 瑞奇林机械（宁波）有限公司 | Lighting control circuit and electronic switch thereof |
| CN207321585U (en) * | 2017-08-28 | 2018-05-04 | 杭州葆蕾电器有限公司 | A kind of circuit for preventing the true fire-fighting delay switch lamp brightness flicker of single firewire |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1868284B1 (en) * | 2006-06-15 | 2013-07-24 | OSRAM GmbH | Driver arrangement for LED lamps |
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2021
- 2021-05-17 CN CN202110536597.1A patent/CN113267721B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1739073A (en) * | 2003-01-16 | 2006-02-22 | 国际整流器公司 | Dimming ballast control IC with flash suppression circuit |
| CN103168504A (en) * | 2010-10-19 | 2013-06-19 | 皇家飞利浦电子股份有限公司 | LED circuit arrangement |
| CN103293473A (en) * | 2013-06-06 | 2013-09-11 | 东莞博用电子科技有限公司 | Electronic switch detecting circuit applied to LED illuminating lamp |
| CN204231720U (en) * | 2014-12-03 | 2015-03-25 | 瑞奇林机械（宁波）有限公司 | Lighting control circuit and electronic switch thereof |
| CN207321585U (en) * | 2017-08-28 | 2018-05-04 | 杭州葆蕾电器有限公司 | A kind of circuit for preventing the true fire-fighting delay switch lamp brightness flicker of single firewire |
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| CN113267721A (en) | 2021-08-17 |
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