CN103237379A - LED (Light-Emitting Diode) product capable of flashing synchronously - Google Patents
LED (Light-Emitting Diode) product capable of flashing synchronously Download PDFInfo
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- CN103237379A CN103237379A CN2013101522095A CN201310152209A CN103237379A CN 103237379 A CN103237379 A CN 103237379A CN 2013101522095 A CN2013101522095 A CN 2013101522095A CN 201310152209 A CN201310152209 A CN 201310152209A CN 103237379 A CN103237379 A CN 103237379A
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Abstract
The invention discloses an LED (Light-Emitting Diode) product capable of flashing synchronously, and particularly discloses an LED product capable flashing synchronously under the control of a singlechip. One end of electric supply is connected with the cathode pin of a power supply of the singlechip, and the other end of the electric supply is connected to the interrupt input pin of the singlechip through a current limiting resistor with a proper resistance value; a filtering capacitor is connected between the interrupt pin and the power supply cathode; in the interrupt pin, a power frequency square wave signal which has a proper voltage amplitude and can be identified accurately by using the singlechip can be obtained; and the singlechip is used for controlling an LED to flash synchronously by using the power frequency square wave signal of the interrupt pin according to a program. The LED product capable of flashing synchronously disclosed by the invention is suitable for electric supply power supply, and synchronous flashing is realized by simultaneously supplying power.
Description
Technical field
The present invention relates to a kind of LED product, especially the LED product of energy synchronization flash under the control of single-chip microcomputer.
Background technology
Present LED has many kinds of colors, just white, warm white, redness, green, blueness, yellow etc. are for example arranged, the LED of different colours put together carry out mixed light in different ratios and can also obtain more color, if allow the LED product show that in turn different color relations can allow the people see colorful effect.The light on and off response time of LED lamp is very short, the back LED lamp that powers on can light rapidly in the short time at the utmost point, outage back LED lamp can extinguish rapidly in the short time at the utmost point, so can regulate the brightness of LED easily by pulse-width modulation (being PWM) technology, and control LED light on and off repeatedly, and the LED of control different colours carries out mixed light.It is (the brightness variation and the change color that comprise LED) that changes in time that the luminous of many LED products arranged in the market, and we are generically and collectively referred to as " flash of light of LED " to all variations in light modes of the LED lamp that comprises LED brightness variation and change color.
In order to obtain various required flash effects, can write various burning programs (perhaps solidifying) in single-chip microcomputer, allow single-chip microcomputer send control signal control LED lamp group according to the instruction of program and glisten regularly.For more accurate work clock pulse is provided to single-chip microcomputer, connect a quartz crystal oscillator frequency stabilization generally will for each single-chip microcomputer, because compare with resistance-capacitance oscillator, crystal oscillator can provide clock frequency more accurately, for example the precision of quartz crystal oscillator generally is 5/10000ths at present, however, adopt every time through 200 seconds of single-chip microcomputer of crystal oscillator frequency stabilization still about 0.1 second timing error may occur, that is to say that the LED flash of light that product human eye after powering on about five minutes just may see obviously that different single-chip microcomputers control is inconsistent, it is asynchronous that this phenomenon is called the LED flash of light.
In order to realize the synchronization flash of LED product, the product that has in the prior art is being connected with lead between each LED light fixture and transmitting synchronizing signal by lead, this product cost is higher, the installation trouble, and one of them light fixture has been broken may influence other light fixture cisco unity malfunction.In the prior art also useful wireless module transmit the method for synchronizing signal, this product cost is higher, and is limited because of the wireless signal transmitting range again, so the distance between the light fixture is very limited, therefore can not get using in a lot of occasions.
Both transmitted synchronizing signal without wireless module if require between the LED product, also transmit synchronizing signal without lead, a correct thinking of realization synchronization flash manages to extract power frequency synchronizing signal exactly in the mains-supplied line, allows the single-chip microcomputer unification according to the control of the power frequency component in electrical network LED lamp group synchronization flash.Power frequency refers to the nominal frequency value of the AC electric power systems of industrial usefulness, i.e. the frequency of civil power, and the unit hertz, the mains frequency of a common country is fixed, and for example Zhong Guo power frequency is 50Hz.Though slight change may take place because of electrical network load change and other factors in the power frequency value in the reality, but this can't influence the synchronization flash of each the LED lamp in same electrical network, only can allow all LED flick of lamp speed accelerate simultaneously some or simultaneously more slack-off, but each LED lamp flash of light step each other can be consistent.
Because civil power is that voltage effective value is the power frequency sinusoidal ac of 220V, so that want earlier civil power is become low pressure through step-down and shaping and can could be utilized power frequency component to realize the synchronous working of single-chip microcomputer by the accurate square-wave signal of identification of single-chip microcomputer.
As everyone knows, the edge changes slowly that sine wave can be converted to square wave by the voltage comparator shaping.LED product great majority are to adopt mains-supplied, and voltage comparator circuit is to work in low pressure light current environment, so must carry out step-down to civil power with transformer earlier, obtain after the suitable low pressure sinusoidal ac of voltage amplitude, just can be linked into and carry out shaping in the voltage comparator circuit, again because LED product great majority are to adopt the small and exquisite constant-current supply of volume or Switching Power Supply power supply at present, and seldom use city's piezoelectric transformer of volume heaviness, if increase city's piezoelectric transformer again so give in each LED light fixture, the volume and weight of whole light fixture all can increase a lot, the cost of production manufacturing and construction and installation also can obviously strengthen, and this is that situation about occurring is not wished in the user of LED product and factory commercial city; In addition, generally to use at least one medium scale integrated circuit in the voltage comparator circuit, line more complicated between each components and parts pin, the Schmidt trigger of building with 555 integrated circuits for example, intersect for fear of circuit, have to adopt expensive double-sided circuit plate technique to be made in actual production, this makes that also product cost further increases.Therefore, with voltage comparator sine wave shaped is become the method for the circuit of square wave, can not satisfy the requirement in actual applications of LED product well.
Summary of the invention
In sum, there is the nonsynchronous problem of flash of light in LED product with the crystal oscillator frequency stabilization in the prior art, adopt lead to transmit LED product cost height and the construction and installation trouble of synchronizing signal, adopt the LED product cost height of wireless module transmission synchronizing signal and the distance between the light fixture to be very limited, adopt LED product cost height and the volume heaviness of voltage comparator circuit.
In order to solve the problems of the technologies described above, the invention the technical scheme of a novelty: an end of civil power is linked to each other with the power cathode pin of single-chip microcomputer, the other end of civil power is connected the interruption input pin of single-chip microcomputer through a suitable current-limiting resistance of resistance, between interrupting pin and power cathode, this is connected a filter capacitor, just can obtain voltage amplitude suitably and can be by the accurate power frequency square-wave signal of identification of single-chip microcomputer at this interruption pin, single-chip microcomputer utilizes the power frequency square-wave signal of this interruption pin according to program control LED synchronization flash.Elaborate the principle of the technical program below in conjunction with accompanying drawing.
In order to protect too high voltage that the single-chip microcomputer internal circuit do not come from the outside or low excessively voltage to damage; various single-chip microcomputers in the market generally all can link to each other with positive source, negative pole pin respectively by two diodes in each I/O pin inside, realize the potential value clamper of I/O pin within the scope of safe voltage.For example the INT1 pin of U1 is to link to each other with the D2 negative electrode with the anode of D1 in the inside of U1 in the accompanying drawing 1, and the negative electrode of D1 links to each other with the positive source pin of U1, and the anode of D2 links to each other with the power cathode pin of U1.If the operating voltage of U1 is 5V, if the forward voltage drop when D1 and D2 conducting is 0.5V, D1 conducting when external voltage surpasses 5.5V so, when external voltage is lower than-D2 conducting 0.5V the time, the current potential of this INT1 pin just is clamped at-0.5V to 5.5V between.Use the diode test function shelves of universal instrument to detect arbitrary I/O pin of single-chip microcomputer respectively and positive source, negative pole pin between forward and reverse measured value, whether the I/O pin inside that just can judge this single-chip microcomputer has above-mentioned clamp diode to exist, and in fact the overwhelming majority's single-chip processor i/o pin commonly used inside has above-mentioned clamp diode to exist at present.
Earlier the positive source of U1, negative pole pin correctly are connected on the isolated form 5V DC power supply, again an end of civil power is linked to each other with power cathode, the other end of civil power is connected the INT1 pin of U1 afterwards through a current-limiting resistance R1, the initial value of the INT1 pin by software U1 is set to high level, below we just are the electromotive force reference point with the power cathode, the situation of labor INT1 pin potential change in a power frequency period theoretically:
At the positive half cycle of civil power, the A terminal potential is started from scratch and is risen gradually, is lower than in the A terminal potential the time of 5.5V, D1 and D2 end, do not have electric current to pass through among the R1, the INT1 pin keeps equating with the current potential of A end, so the current potential of INT1 pin also is to start from scratch to rise gradually in this period;
In the moment of 56.3 microseconds, the A terminal potential rises to 5.5V, the current potential of INT1 pin also rises to 5.5V, the A terminal potential is that (wherein 0.02 second is the sine wave period duration of civil power from the 5.5V of being raised to above freezing institute elapsed time length calculation mode, 311 volts is the civil power crest voltage, the 3.14th, circumference ratio): ((0.02 second/2) * arcsin (5.5 volts/311 volts))/3.14=0.0000563 second;
Through 56.3 microseconds after the time, the A terminal potential continues to rise from 5.5V, the D1 forward conduction, the D2 remain off, there is electric current to flow to the positive source pin of single-chip microcomputer by R1 and D1 from the A end, we are referred to as " clamp current " to this electric current, continuation rising along with the A terminal potential, clamp current also increases thereupon gradually, along with rising to, the A terminal potential then continues behind the peak value to descend, clamp current then reduces after also increasing to maximum thereupon gradually, and to remain at 5.5V constant for the current potential of INT1 pin in this period;
In the moment of 9943.7 microseconds, the A terminal potential drops to 5.5V, and clamp current is decreased to zero, and D1 and D2 end, and the current potential of INT1 pin still remains on 5.5V;
Through 9943.7 microseconds after the time, the A terminal potential continues to descend from 5.5V, and D1 and D2 end, and the electric current by R1 is zero, and the INT1 pin equates with the current potential maintenance of A end, so the current potential of INT1 pin also is to begin to descend gradually from 5.5V in this period;
In the moment of 10000 microseconds, the A terminal potential drops to zero, and the current potential of INT1 pin also drops to zero;
Through 10000 microseconds after the time, the A terminal potential begins to continue to descend from zero, be higher than at the A terminal potential-in period of 0.5V, D1 and D2 end, electric current by R1 is zero, and the INT1 pin keeps equating with the current potential of A end, so the current potential of INT1 pin also is to start from scratch to descend gradually in this period;
In the moment of 10005.1 microseconds, the A terminal potential drops to-0.5V, and the current potential of INT1 pin also drops to-0.5V, and the A terminal potential from subzero dropping to-0.5V institute elapsed time length calculation mode is:
((0.02 second/2) * arcsin (0.5 volt/311 volts))/3.14=0.0000051 second;
Through 10005.1 microseconds after the time, the A terminal potential continues decline from-0.5V, the D2 forward conduction, the D1 remain off, there is electric current to flow to the A end from the power cathode pin of single-chip microcomputer by D2 and R1, we still are referred to as " clamp current " to this electric current, continuation reduction along with the A terminal potential, clamp current also increases thereupon gradually, along with dropping to valley, the A terminal potential then continues later on to rise, clamp current also increases to maximum thereupon and then reduces gradually later, in this period the current potential of INT1 pin remain at-0.5V is constant;
In the moment of 19994.9 microseconds, the A terminal potential rises to-0.5V, and clamp current is decreased to zero, and D1 and D2 end, and the current potential of INT1 pin still remains on-0.5V;
Through 19994.9 microseconds after the time, the A terminal potential begins to continue to rise from-0.5V, be lower than in the zero period at the A terminal potential, D1 and D2 end, electric current by R1 is zero, the current potential of INT1 pin and A end keeps equating, so the current potential of INT1 pin also is to begin to rise gradually from-0.5V in this period;
In the moment of 20000 microseconds, the A terminal potential rises to zero, and the current potential of INT1 pin also rises to zero.
By the top potential change situation of analyzing at sinusoidal period INT1 pin in the time of civil power, we know that the time dependent wavy curve of the current potential of INT1 pin is square wave, the cycle of this square wave equals the sinusoidal wave period of civil power, the maximum of this square wave is 5.5V, minimum value is-0.5V, this square wave from-0.5V rise to 5.5V or from 5.5V drop to-the used time of 0.5V all is about 61.4 microseconds, as seen the rising edge of this square wave and trailing edge all are very steep, so this square wave can accurately be identified by the interruption input pin of single-chip microcomputer.
As everyone knows, also may occur various irregular noise jamming signals in the electrical network of civil power at any time, so we will be in accompanying drawings 1 meet a filter capacitor C1 between INT1 pin and the power cathode, be used for elimination from the noise jamming signal in the electrical network.C1 has existence, can make the lifting of the resulting square wave of INT1 pin along becoming mild a little, but proper as long as the value of C1 and R1 is chosen, single-chip microcomputer still can accurately be identified in the resulting square wave of INT1 pin.It is 104 ceramic disc capacitor that C1 can select specification for use.
Can not too greatly can not be too little about the value of R1, if the resistance of R1 is too big, can cause the interruption pin of single-chip microcomputer can not be identified in the square-wave signal of INT1 pin, the value of R1 can not be too little, if the resistance of R1 is too little, can cause clamp current to exceed single-chip microcomputer limiting current value allowed to bear.In the resistance of guaranteeing R1 can be taken into account aspect above-mentioned these two the span that requires, adopting specification at C1 was under the condition of 104 ceramic disc capacitor, and it is the conventional, electric-resistance that 470 kilo-ohms, power equal sixth watt greatly that R1 can select resistance for use.
So far, we have realized obtaining to equate with the civil power cycle and can be by the accurate square-wave signal of identifying of single-chip microcomputer at the INT1 pin, so next when writing Single Chip Microcomputer (SCM) program, we just can utilize the step speed of the power frequency square-wave signal control LED flash of light of INT1 pin, the final synchronization flash of realizing the LED that controls.
The invention has the beneficial effects as follows: the synchronous circuit of only successfully building the LED product with 1 small-power resistance and 1 ceramic disc capacitor, this synchronous circuit can directly extract power frequency component and give single-chip microcomputer as synchronizing signal in civil power, the employed component number of this synchronous circuit is few, circuit body is actively little, circuit cost is extremely low, circuit structure is extremely simple, therefore the variation of the weight of the whole LED light fixture after this synchronous circuit of application and cost is all extremely small in the LED product, even can ignore, the volume of whole LED light fixture also can remain unchanged.
The LED product that the present invention creates can extract the synchronous working that power frequency component is realized single-chip microcomputer from the mains-supplied circuit, realize the LED lamp synchronization flash of controlling; As long as each LED product has the mains-supplied line, circuit connection is very simple; Any one LED light fixture all works alone, after any one LED light fixture damages, can not influence the operate as normal of other LED light fixture, after the LED light fixture of some quantity has been installed, people can also add some LED light fixture at any time, the LED light fixture of a part of quantity of also can dismantling, other LED light fixture can not be affected; As long as all LED light fixtures just can not installed by distance limit arbitrarily at same mains supply between all LED light fixtures, by powering on simultaneously, just can realize all LED light fixture synchronization flash; LED product of the present invention can also arbitrarily obtain various required LED flash effects by reprogramming, the kind that changes used LED lamp and quantity; The present invention is very wide in the scope of application in LED field, comprise monochromatic light on and off flicker, comprise the variable color in turn of seven glories, and other any application scenario that needs the LED synchronization flash, can use the synchronization flash that technical scheme that the present invention creates realizes the LED that controls in the control circuit of its product, the product that for example has is to control a series of LED light fixture with an external controller to glisten, can in this controller, use the synchronization solutions that the present invention creates, realize all light fixtures that each controller controls respectively synchronization flash together.The invention solves for a long time about LED product nonsynchronous technical bottleneck of glistening, be conducive to impel the LED product to be applied in the larger context from now on, thereby produce positive social benefit and economic benefit.
Description of drawings
Fig. 1 is control circuit schematic diagram of the present invention, and Fig. 2 is the schematic diagram of LED lamp group and drive circuit thereof, and each three the LED lamp of red, green, blue that only draw among the figure should be selected kind and the quantity of required LED according to concrete requirement for use in actual applications as example.The 5V DC power supply of Fig. 1 and the 12V DC power supply of Fig. 2 all are the power supplys of isolated form, and the power cathode of Fig. 1 and Fig. 2 is communicated with electric.
Among Fig. 1, A is two ports that are connected with the two ends of civil power respectively with B, R1 is current-limiting resistance, C1 is filter capacitor, U1 is single-chip microcomputer, for simplified electrical circuit diagram, six pins relevant with this case of single-chip microcomputer only draw, other pin and the peripheral circuit of single-chip microcomputer omit in Fig. 1, and wherein the VCC pin connects the 5V positive source, and GND connects power cathode, the INT1 pin is to interrupt input pin, P1.0, P1.1, P1.2 are three output pins, and D1, D2 are two clamp diodes of U1 inside, and Port1, Port2, Port3 are the ports that is electrically connected with Fig. 2 realization.
Among Fig. 2, Port1, Port2, Port3 are the ports that is electrically connected with Fig. 1 realization, and R2, R3, R4, R5, R6, R7 are current-limiting resistances, Q1, Q2, Q3 are triodes, L1, L2, L3 are red LED lamp, and L4, L5, L6 are green LED lamp, and L7, L8, L9 are the blue led lamps.
The civil power that is connected on A, B port is imported the interruption pin INT1 of U1 after R1 current limliting and C1 filtering, by the D1 of U1 inside and D2 clamper between-the 0.5V to 5.5V, the INT1 pin of having realized at U1 obtains the suitable power frequency square-wave signal of voltage amplitude, single-chip microcomputer drives Q1, Q2, Q3 saturation conduction respectively or ends in P1.0, P1.1, P1.2 tripod output control signal according to program command under the effect of this signal, thereby the light on and off of control red, green, blue LED lamp, the mixed light of realization three primary colors.R5, R6, R7 are limited to suitable size with the conducting current value of red, green, blue LED lamp respectively, R2, R3, R4 are limited to suitable size with the base current value of Q1, Q2, Q3 respectively, this case suggestion selects for use the output current of I/O mouth can directly drive the single-chip microcomputer type of triode, otherwise should increase pull-up resistor respectively to strengthen driving force at each output pin.
Embodiment
Connect circuit according to accompanying drawing 1 and Fig. 2, DC power supply wherein adopts isolation type switch power to provide, side a and b is connected on the two ends of civil power, R1 selects 470 kilo-ohms of resistances for use, the resistance that power is 1/4th watts, it is 104 ceramic disc capacitor that C1 selects specification for use, U1 selects for use the I/O mouth that the single-chip microcomputer of the output function of recommending is arranged, connect the peripheral circuit of U1 on request, L1, L2, L3 is red LED lamp, L4, L5, L6 is green LED lamp, L7, L8, L9 is the blue led lamp, in circuit, make these three kinds of colors LED lamp pearl placement location as best one can mutually near, people just can see the color that obtains behind their mixed lights a long way off, R2, R3, R4 selects 4.7 kilo-ohms resistance for use, R5 selects the conventional, electric-resistance in 300 Europe, R6 for use, R7 is the resistance of selecting 130 Europe for use, Q1, Q2, Q3 is that to select specifications and models for use be 8050 triode.
Burning is in single-chip microcomputer U1 the inside after writing Single Chip Microcomputer (SCM) program and process compiling then, program function is that control three-primary color LED mixed light is able to seven kinds of common colors, the bright 3 second time of every kind of color, reiteration demonstration in turn according to redness, yellow, green, cyan, blueness, purple, white, the content of a wherein part of C linguistic source program of listing this program below for reference (because this program is very simple and source program to allow the people see easily clear, so repeat no more the flowage structure of this program here):
Earlier at three output pins of function header definition and global variable of statement: sbit red=P1^0; Sbit green=P1^1; Sbit blue=P1^2; Int n=0;
Next be principal function:
{?IE=0x84;?TCON=0x04;
while(1)
{ n=0; While (n＜150) { red=1; Green=0; Blue=0; The red * of }/*/
N=0; While (n＜150) { red=1; Green=1; Blue=0; The yellow * of }/*/
N=0; While (n＜150) { red=0; Green=1; Blue=0; The green * of }/*/
N=0; While (n＜150) { red=0; Green=1; Blue=1; }/* cyan */
N=0; While (n＜150) { red=0; Green=0; Blue=1; The blue * of }/*/
N=0; While (n＜150) { red=1; Green=0; Blue=1; }/* purple */
N=0; While (n＜150) { red=1; Green=1; Blue=1; }/* white */
}}?
Next be interrupt function again: { n++; }
Leave it at that.
Claims (4)
1. the LED product of synchronization flash, single-chip microcomputer sends control signal control LED according to the instruction of people institute written program and glistens, thereby obtain various required flash effects, it is characterized in that: an end of civil power is linked to each other with the power cathode pin of single-chip microcomputer, the other end of civil power is connected the interruption input pin of single-chip microcomputer through a suitable current-limiting resistance of resistance, be connected a filter capacitor between this interrupts pin and power cathode, single-chip microcomputer utilizes the power frequency square-wave signal of this interruption pin according to program control LED synchronization flash.
2. the LED product of synchronization flash according to claim 1, it is characterized in that: being connected an end of civil power and the resistance of the current-limiting resistance between the singlechip interruption input pin is 470 kilo-ohms.
3. the LED product of synchronization flash according to claim 1 is characterized in that: the interruption input pin and the filter capacitor between the power cathode that connect single-chip microcomputer are that specification is 104 ceramic disc capacitor.
4. the LED product of synchronization flash according to claim 1, it is characterized in that: the LED that single-chip microcomputer is controlled includes the LED of three kinds of colors of red, green, blue.
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| CN2013101522095A CN103237379A (en) | 2013-04-27 | 2013-04-27 | LED (Light-Emitting Diode) product capable of flashing synchronously |
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| CN2013101522095A CN103237379A (en) | 2013-04-27 | 2013-04-27 | LED (Light-Emitting Diode) product capable of flashing synchronously |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106804089A (en) * | 2017-04-07 | 2017-06-06 | 深圳市银河风云网络系统股份有限公司 | The method and system that control lamp synchronously changes |
| CN114299737A (en) * | 2021-12-03 | 2022-04-08 | 江苏航天大为科技股份有限公司 | Synchronous timing signal generating device for internet signal lamp |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200973088Y (en) * | 2006-06-15 | 2007-11-07 | 杭州瑞琦信息技术有限公司 | Self-excitation power carrier transmit-receive circuit |
| CN101197543A (en) * | 2007-12-06 | 2008-06-11 | 丁鹏坤 | Controllable green electric power adopting novel regulation and transformation method |
| CN201438336U (en) * | 2009-08-07 | 2010-04-14 | 浙江富阳市新源交通电子有限公司 | Wireless synchronous rail spike |
| CN102636936A (en) * | 2012-04-12 | 2012-08-15 | 山东海日峰电子科技有限公司 | Intelligent LED (light-emitting diode) video synchronizing impulse stroboscopic supplemental lighting device |
| CN202471828U (en) * | 2012-03-13 | 2012-10-03 | 上海诺雅克电气有限公司 | Voltage sampling circuit suitable for dual-power automatic transfer switch and controller |
-
2013
- 2013-04-27 CN CN2013101522095A patent/CN103237379A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200973088Y (en) * | 2006-06-15 | 2007-11-07 | 杭州瑞琦信息技术有限公司 | Self-excitation power carrier transmit-receive circuit |
| CN101197543A (en) * | 2007-12-06 | 2008-06-11 | 丁鹏坤 | Controllable green electric power adopting novel regulation and transformation method |
| CN201438336U (en) * | 2009-08-07 | 2010-04-14 | 浙江富阳市新源交通电子有限公司 | Wireless synchronous rail spike |
| CN202471828U (en) * | 2012-03-13 | 2012-10-03 | 上海诺雅克电气有限公司 | Voltage sampling circuit suitable for dual-power automatic transfer switch and controller |
| CN102636936A (en) * | 2012-04-12 | 2012-08-15 | 山东海日峰电子科技有限公司 | Intelligent LED (light-emitting diode) video synchronizing impulse stroboscopic supplemental lighting device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106804089A (en) * | 2017-04-07 | 2017-06-06 | 深圳市银河风云网络系统股份有限公司 | The method and system that control lamp synchronously changes |
| CN106804089B (en) * | 2017-04-07 | 2019-06-21 | 深圳市银河风云网络系统股份有限公司 | Control the method and system of the synchronous variation of lamp |
| CN114299737A (en) * | 2021-12-03 | 2022-04-08 | 江苏航天大为科技股份有限公司 | Synchronous timing signal generating device for internet signal lamp |
| CN114299737B (en) * | 2021-12-03 | 2022-12-02 | 江苏航天大为科技股份有限公司 | Synchronous timing signal generating device for internet connection signal lamp |
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Application publication date: 20130807 |