CN103945617A - LED (light emitting diode) guardrail tube control circuit and device - Google Patents
LED (light emitting diode) guardrail tube control circuit and device Download PDFInfo
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention provides an LED guardrail tube control circuit and device. According to the circuit, at least two groups of LED lighting circuits are connected with a control chip; the control chip receives various groups of control signals, which are transmitted by a control signal input end and used for controlling the LED lighting circuits connected with the control chip, and transmits the various groups of control signals to the LED lighting circuits when receiving a trigger signal transmitted by the control signal input end, so that the LED lighting circuit can turn on or off the LED lamps in the LED lighting circuits according to the control signals. The LED guardrail control circuit can control multiple groups of LED lighting circuits simultaneously; under the condition of a constant number of LED lamps, can reduce the number of cascade connection correspondingly and shorten the control signal conveying time correspondingly, namely, control the control signal conveying time to be shorter than the data delay time of the control chip; can avoid LED lamp flickering, enhance the lighting effects and improve the stability; can prolong the service life of the LED lamps.
Description
Technical field
The present invention relates to lighting field, be specifically related to a kind of LED guardrail pipe control circuit.
Background technology
LED guardrail pipe is to adopt high-quality ultra-bright LED (Light-Emitting Diode, light-emitting diode) composition, because it has low power consumption, low in calories, the life-span long, shock-resistant, reliability is high, energy-conserving and environment-protective, photochromic soft, brightness high, is widely used in urban look brightening.
Existing LED guardrail pipe comprises at least two LED guardrail lamp tube control units that are positioned at guardrail pipe, between each LED guardrail lamp tube control unit, connect, each LED guardrail lamp tube control unit is only controlled a paths of LEDs illuminating circuit, whole LED guardrail pipe is by each LED guardrail lamp tube control unit transmission of control signals step by step, thereby the LED lamp of controlling in the LED illuminating circuit that each LED guardrail lamp tube control unit connects is lighted or extinguishes.
But, between each paths of LEDs illuminating circuit, be connected by each LED guardrail lamp tube control unit series connection, series circuit certainly exists time delay, be to have time delay between LED illuminating circuits at different levels, time delay meeting causes LED to occur scintillation, and time delay between LED illuminating circuits at different levels accumulation step by step in series circuit causes the scintillation of LED of final stage even more serious.The flicker of LED not only affects illuminating effect, more seriously also can affect the useful life of LED lamp.
Therefore, need a kind of LED guardrail pipe control program badly in order to address the above problem.
Summary of the invention
The present invention is directed to prior art above shortcomings, proposed a kind of LED guardrail pipe control circuit, in order to solve the problem that LED lamp useful life is short, illuminating effect is poor.
For this reason, the present invention adopts following technical scheme:
A kind of LED guardrail pipe control circuit, comprising: control chip and at least 2 group LED illuminating circuits;
Control chip is connected with control signal input with each group of LED illuminating circuit respectively, for reception control signal input send for controlling respectively each group of control signal of described each group of LED illuminating circuit, and the triggering signal of reception control signal input transmission, and in the time receiving described triggering signal, transmit and the respectively corresponding described each group of control signal of each group of LED illuminating circuit to each group of LED illuminating circuit;
Described each group of LED illuminating circuit is used for, and receives separately the control signal of this group of control chip transmission, and lights or extinguish according to the LED lamp in this group of control signal control LED illuminating circuit of described group.
Preferably, control signal input order sends the each group of control signal for controlling respectively each group of LED illuminating circuit to control chip, and after each group of control signal is all sent, sends and reset RESET signal to control chip;
Control chip specifically for, order receives the each group of control signal for controlling respectively each group of LED illuminating circuit, and in the time receiving described RESET signal, transmits and each group of LED illuminating circuit corresponding each group control signal respectively to each group of LED illuminating circuit.
Preferably, control signal input is connected with control chip through the first pull-up resistor, and control chip is connected with control signal output through the second pull-up resistor.
Preferably, power supply is connected with control chip through the 3rd pull-up resistor.
Further, this LED guardrail pipe control circuit also comprises the first filter circuit, and the first filter circuit comprises the first electric capacity, and the first electric capacity is connected with the pin being connected with the 3rd pull-up resistor of ground and control chip respectively.
Further, this LED guardrail pipe control circuit also comprises the second filter circuit being connected with control chip, the second filter circuit comprises the second electric capacity, the second electric capacity respectively with the pin being connected with the 3rd pull-up resistor of control chip, and the pin of the ground connection of control chip is connected.
Further, this LED guardrail pipe control circuit also comprises the 3rd filter circuit being connected with each group of LED illuminating circuit, the 3rd filter circuit comprises the 3rd electric capacity, and an electrode of the 3rd electric capacity is connected with power supply with each group of LED illuminating circuit respectively, and another electrode of the 3rd electric capacity is connected to the ground.
Further, this LED guardrail pipe control circuit also includes the power supply that is used to the power supply of this LED guardrail pipe control circuit, described power supply and respectively organize and be connected with the counnter attack diode for preventing that electric current is reverse between LED illuminating circuit.
Preferably, respectively organize LED illuminating circuit and comprise one or more LED illuminating circuit, each paths of LEDs illuminating circuit comprises: resistance and one or more light-emitting diode, resistance and the series connection of described light-emitting diode;
Described light-emitting diode comprises white light-emitting diodes and/or RGB diode.
The present invention also provides a kind of LED guardrail pipe control device, comprises multistage LED guardrail pipe control circuit as described in claim 1-9 any one, LED guardrail pipe control circuit at different levels cascade; Wherein, the control signal output of control chip and the control signal input of the control chip of next stage cascade in LED guardrail pipe control circuit at the corresponding levels is connected;
Control chip in LED guardrail pipe control circuit at the corresponding levels is used for, in the time receiving triggering signal, forward described for controlling respectively each group of control signal of the each group of LED illuminating circuit being connected with the control chip of next stage cascade to the control chip of next stage cascade by control signal output.
Compared with prior art, the above embodiment of the present invention has following useful technique effect:
The present invention is connected at least 2 group LED illuminating circuits with control chip, by control chip reception control signal input send for controlling respectively each group of control signal of the each group of LED illuminating circuit being connected with control chip, and in the time of the triggering signal of reception control signal input transmission, send this each group control signal to each group of LED illuminating circuit, light or extinguish according to the LED lamp in this this group of control signal control LED illuminating circuit so that respectively organize LED illuminating circuit, this LED guardrail pipe control circuit can be controlled many group LED illuminating circuits simultaneously, in the situation that LED lamp sum is certain, the corresponding minimizing of progression of cascade, accordingly, the corresponding shortening of control signal transmission time, it is the data delay time that is less than control chip the control signal transmission time, therefore, there will not be the phenomenon of LED lamp flicker, strengthen illuminating effect, improve stability, and can extend useful life of LED lamp.
Brief description of the drawings
The block diagram of the LED guardrail pipe control circuit that Fig. 1 provides for the embodiment of the present invention.
The circuit diagram of the first order LED guardrail pipe control circuit that Fig. 2 provides for the embodiment of the present invention;
The circuit diagram of the LED illuminating circuit that Fig. 3 provides for the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the present invention, the technical scheme in the present invention is carried out to clear, complete description, obviously, described embodiment is a part of embodiment of the present invention, instead of whole embodiment.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite of not making creative work, belongs to the scope of protection of the invention.
The embodiment of the present invention provides a kind of LED guardrail pipe control circuit, below in conjunction with Fig. 1, the annexation of this LED guardrail pipe control circuit is described, as shown in Figure 1, this control circuit comprises: the control chip 1 being connected with control signal input DIN1 with power supply Vcc and at least 2 group LED illuminating circuits that are connected with control chip 1, and respectively organize LED illuminating circuit and be connected with power supply Vcc respectively.In embodiments of the present invention, taking 3 groups of LED illuminating circuits: first group of LED illuminating circuit 21, second group of LED illuminating circuit 22 and the 3rd group of LED illuminating circuit 23 describe as example.
Control signal input DIN1 can be connected with master controller (not illustrating in figure), in master controller, can set the control program of each group of LED illuminating circuit, master controller is according to this control program, and by control signal input, DIN1 transmits control signal to control chip 1.
Power supply Vcc is connected with each group of LED illuminating circuit with control chip 1, and power supply Vcc not only powers for control chip 1, is also each group of LED illuminating circuit power supply.
Control chip 1 respectively with each group of LED illuminating circuit, power supply Vcc is connected with control signal input DIN1, be control chip 1 respectively with first group of LED illuminating circuit 21, second group of LED illuminating circuit 22 is connected with the 3rd group of LED illuminating circuit 23, under driving for the electric energy providing at power supply Vcc, reception control signal input DIN1 transmit for controlling respectively each group of control signal of each group of LED illuminating circuit, and the triggering signal of reception control signal input transmission, and in the time receiving described triggering signal, transmit and each group of LED illuminating circuit corresponding each group control signal respectively to each group of LED illuminating circuit, simultaneously to first group of LED illuminating circuit 21, second group of LED illuminating circuit 22 and the 3rd group of LED illuminating circuit 23 transmit respectively one group of control signal.
First group of LED illuminating circuit 21, second group of LED illuminating circuit 22 and the 3rd group of LED illuminating circuit 23, be connected with power supply Vcc respectively, under driving for the electric energy at power supply Vcc, receive separately that send and the each group of LED illuminating circuit corresponding each group control signal (being the control signal of this group) respectively of control chip 1, and light or extinguish according to the LED lamp in this this group of group control signal control LED illuminating circuit.
The LED guardrail pipe control circuit of the embodiment of the present invention adopts NRZ mode transmitted signal, and control signal input DIN1 is after control chip 1 is sent completely control signal, and control signal level returns to zero within a code element.
Concrete, control signal input DIN1 order sends the control signal of each group of LED illuminating circuit to control chip 1, and after each group of control signal is all sent, send RESET (resetting) signal to control chip 1, this RESET signal is the described triggering signal that control signal input sends.
Control chip 1 specifically for, order receives the each group of control signal for controlling respectively each group of LED illuminating circuit, and in the time receiving RESET signal, corresponding each group control signal of being simultaneously respectively used to of receiving being controlled to each group of LED illuminating circuit transmits to each group of LED illuminating circuit respectively.
Referring to Fig. 2, the circuit diagram of the first order LED guardrail pipe control circuit providing for the embodiment of the present invention, below in conjunction with Fig. 2 and Fig. 3, taking first order LED guardrail pipe control circuit as example, is elaborated to this LED guardrail pipe control circuit.As shown in Figure 2,3, control chip U1 can select the chip of TM1809 model, and this control chip U1 connects 3 groups of LED illuminating circuits, and every group of LED illuminating circuit comprises 3 paths of LEDs illuminating circuits.
It should be noted that, control chip U1 can connect many group LED illuminating circuits, and is not limited to 3 groups, and the group number of the LED illuminating circuit that control chip U1 connects can be determined by the number of pin of control chip U1.Every group of LED illuminating circuit can comprise 1 road or LED multi-path illuminating circuit, and each paths of LEDs illuminating circuit is also not limited to RGB light-emitting diode, can be also white light emitting diode.
In the present embodiment, this control chip U1 comprises 14 pins, and pin 1 is connected with power supply Vcc, is used to control chip U1 power supply; Pin 2 is unsettled; Pin 3 is connected with control signal output DOUT1, for transmitting control signal to the control chip of next stage cascade; Pin 4-6 is connected with first group of LED illuminating circuit 21, for transmitting control signal to first group of LED illuminating circuit 21, to control the light on and off of first group of LED lamp in LED illuminating circuit 21; Pin 7 ground connection; Pin 8-10 is connected with second group of LED illuminating circuit 22, for transmitting control signal to second group of LED illuminating circuit 22, to control the light on and off of second group of LED lamp in LED illuminating circuit 22; Pin 11-13 is connected with the 3rd group of LED illuminating circuit 23, for transmitting control signal to the 3rd group of LED illuminating circuit 23, to control the light on and off of the 3rd group of LED lamp in LED illuminating circuit 23; Pin 14 is connected with control signal input DIN1, the control signal sending for receiving the control chip of master controller or upper level cascade.
Preferably, control signal input DIN1 is connected with control chip U1 through the first pull-up resistor R11, and control chip U1 is connected with control signal output DOUT1 through the second pull-up resistor R12.Control signal input DIN1 is connected respectively pull-up resistor with control signal output DOUT1, can carry out spacing to the voltage of control signal.
Preferably, power supply Vcc is connected with control chip U1 through the 3rd pull-up resistor R10, to carry out spacing by the 3rd pull-up resistor R10 to the voltage of input control chip U1.
In order to reduce the impact of harmonic current on control chip U1, specific band frequency in filtering power supply, suppresses and prevents from disturbing, and the LED guardrail pipe control circuit of the embodiment of the present invention can also comprise the first filter circuit 3.Preferably, the first filter circuit 3 can comprise that the first capacitor C 1, the first capacitor C 1 is connected with the pin being connected with the 3rd pull-up resistor R10 (being pin 1) of ground and control chip U1 respectively.
Preferably, in order to ensure that control chip U1 is not at work by noise jamming, the second filter circuit 4 can also be set between the pin of control chip U1 1 and pin 7.Preferably, the second filter circuit 4 can comprise the second capacitor C 2, the second capacitor C 2 respectively with the pin being connected with the 3rd pull-up resistor R10 (being pin 1) of control chip U1, and the pin of the ground connection of control chip U1 (being pin 7) is connected.
Preferably, in order to reduce the impact of harmonic current on LED illuminating circuit, specific band frequency in filtering power supply, to suppress and to prevent from disturbing, the LED guardrail pipe control circuit of the embodiment of the present invention also comprises the 3rd filter circuit 5 being connected with each group of LED illuminating circuit.Preferably, the 3rd filter circuit 5 can comprise the 3rd capacitor C 3, an electrode of the 3rd capacitor C 3 is connected with power supply Vcc with first group of LED illuminating circuit 21, second group of LED illuminating circuit 22, the 3rd group of LED illuminating circuit 23 respectively, and another electrode of the 3rd capacitor C 3 is connected to the ground.
It should be noted that, the first filter circuit 3, the second filter circuit 4 and the 3rd filter circuit 5 are not limited to above-mentioned cited implementation, and any circuit that can realize filter action is all within protection scope of the present invention.
Preferably, diode D0 can be used as counnter attack diode, Vcc is connected with power supply, the anode that is diode D0 is connected with power supply Vcc, the negative electrode of diode D0 respectively with the 3rd filter circuit 4 in the 3rd capacitor C 3, and first group of LED illuminating circuit 21, second group of LED illuminating circuit 22, the 3rd group of LED illuminating circuit 23 are connected.On power supply Vcc, connect D0, can prevent that the electric current of LED illuminating circuit is reverse, ensure the fail safe of LED illuminating circuit.
Each group LED illuminating circuit can comprise one or more LED illuminating circuit, every paths of LEDs illuminating circuit comprises: resistance and one or more light-emitting diode, resistance and the series connection of described light-emitting diode, described light-emitting diode can select RGB light-emitting diode and/or white light-emitting diodes to realize.
Preferably, respectively organize LED illuminating circuit and comprise respectively 3 paths of LEDs illuminating circuits, in each paths of LEDs illuminating circuit, all select RGB light-emitting diode, this 3 paths of LEDs illuminating circuit is RGB illuminating circuit.
Below in conjunction with Fig. 3, LED illuminating circuit is elaborated, as shown in Figure 3, first group of LED illuminating circuit comprises 3 road RGB LED illuminating circuits: 1OUTR, 1OUTG, 1OUTB, this 3 road RGB LED illuminating circuit is connected with the pin 11-13 of control chip U1 respectively.Second group of LED illuminating circuit comprises 3 road RGB LED illuminating circuits: 2OUTR, 2OUTG, 2OUTB, this 3 road RGB LED illuminating circuit is connected with the pin 8-10 of control chip U1 respectively.The 3rd group of LED illuminating circuit comprises 3 road RGB LED illuminating circuits: 3OUTR, 3OUTG, 3OUTB, this 3 road RGB LED illuminating circuit is connected with the pin 4-6 of control chip U1 respectively.
Taking the 1OUTR in first group of LED illuminating circuit as example, describe the composition of this paths of LEDs illuminating circuit in detail below.As shown in Figure 3, comprise: 6 RGB light-emitting diode D1, D4, D7, D10, D13, D16 and resistance R 1, wherein D1, D4, D7, D10, D13, D16 connect with R1,13 pins of control chip U1 are connected with the negative electrode of D16, and the anode of D1 is connected with the negative electrode of D0 and the ungrounded end of C3 respectively.Other 2 road illuminating circuits in first group of LED illuminating circuit, and the connected mode of second group of illuminating circuit, the 3rd group of illuminating circuit is identical with the 1OUTR in first group of LED illuminating circuit, does not repeat them here.
The embodiment of the present invention also provides a kind of LED guardrail pipe control device, comprises multistage aforesaid LED guardrail pipe control circuit, LED guardrail pipe control circuit at different levels cascade; Wherein, the control signal output of control chip and the control signal input of the control chip of next stage cascade in LED guardrail pipe control circuit at the corresponding levels is connected.
Control chip in LED guardrail pipe control circuit at the corresponding levels is used for, in the time receiving triggering signal, described in forwarding to the control chip of next stage cascade by control signal output, for controlling respectively each group of control signal of each group of LED illuminating circuit, this is respectively organized LED illuminating circuit and is all connected with the control chip of next stage cascade.
Conventionally, in the situation that LED guardrail pipe is grown, a LED guardrail pipe can be made up of Multistage Control chip cascade, in every grade of LED guardrail pipe control circuit, includes 1 control chip, and the LED lamp in the LED illuminating circuit of these control chip control corresponding levels is lighted or extinguishes.
Taking the circuit diagram of the first order LED guardrail pipe control circuit shown in Fig. 2 as example, the control signal output DOUT1 of control chip 1 is connected with the control signal input of the control chip of next stage cascade.Between control chips at different levels, be connected with control signal output by control signal input, for example, the control signal output DOUT1 of control chip and the control signal input DIN2 of the control chip of the second level that are the first order are connected, the control signal output DOUT2 of the control chip of the second level is connected with the control signal input DIN3 of the control chip of the third level, by that analogy.
Control chip 1 is in the time receiving RESET signal, forward the each group of control signal for controlling respectively each group of LED illuminating circuit by control signal output DOUT1 to the control chip of next stage (being the second level) cascade, so that the control chip of next stage (second level) is according to many groups LED illuminating circuit of the described control signal control corresponding levels.
It should be noted that, the structure of the LED guardrail pipe control circuits at different levels of cascade is all identical with aforesaid LED guardrail pipe control circuit, does not repeat them here.
In order to be illustrated more clearly in the solution of the present invention, below the course of work of LED guardrail pipe control circuit is elaborated.
After control chip U1 electrification reset, the control signal that reception control signal input DIN1 sends, this control signal is divided into 3 groups, these 3 groups of control signals are respectively used to control 3 groups of LED illuminating circuits that are connected with control chip U1, the master controller being connected by control signal input DIN1 or upper level cascade control chip send to control chip U1 by each group of control signal successively, wherein, in every group of LED illuminating circuit, be to send to successively control chip U1 by control signal input DIN1 for controlling illuminating circuit Ge road, each road control signal.After 3 groups of control signals are all sent, the master controller that control signal input DIN1 connects or the control chip of upper level cascade send RESET signal to control chip U1.When control chip U1 receives RESET signal, 3 groups of control signals receiving are sent simultaneously to 3 groups of LED illuminating circuit Zhong Ge road illuminating circuits that are connected with this control chip, simultaneously by pin 11-13 to first group of LED illuminating circuit 21, by pin 8-10 to second group of LED illuminating circuit 22, and send corresponding control signal by pin 4-6 to the 3rd group of LED illuminating circuit 23.Each paths of LEDs illuminating circuit in each group LED illuminating circuit also receives corresponding that road control signal simultaneously.When the pin 3-13 of control chip U1 (3 groups OUTR, OUTG, OUTB) sends corresponding control signal to each group of LED illuminating circuit respectively, the control signal input DIN1 of control chip U1 does not receive new control signal, the pin 3-13 of control chip U1 is sending to each group of LED illuminating circuit after corresponding control signal completes, and the control signal input DIN1 of control chip U1 receives new control signal again.When control chip U1 receives RESET signal, if this control chip also has the control chip of next stage cascade, also forward the each group of control signal (i.e. the control signal of 3 groups of LED illuminating circuits) receiving to the control chip of next stage cascade by control signal transmitting terminal DOUT1.
The control signal that the pin 3-13 of control chip U1 sends to 3 groups of LED illuminating circuits is pwm signal, pwm signal is according to the corresponding corresponding duty ratio of corresponding control signal, each group LED illuminating circuit, according to the duty ratio of the control signal receiving, is controlled the light on and off of the LED lamp in this group LED illuminating circuit.
Preferably, respectively organize the control signal difference of LED illuminating circuit, i.e. the duty ratio difference of the pwm signal of each group, the control signal of the each paths of LEDs illuminating circuit in each group can be the same or different.In the time that the LED lamp in each paths of LEDs illuminating circuit is white light emitting diode, can realize the control of the light on and off to a certain section of LED guardrail pipe according to control signal; In the time that the LED lamp in each paths of LEDs illuminating circuit is RGB light-emitting diode, by control signal, can controls the LED lamp of different colours and light at different time, thereby realize the conversion of LED guardrail pipe different colours.In addition, because a control chip connects many group LED illuminating circuits, therefore, more horn of plenty of the colour switching of LED guardrail pipe, illumination and excellent decoration effect.This LED guardrail pipe control circuit brush screen time is less than the data delay time of control chip U1, therefore there will not be the phenomenon of any flicker.
Can find out by above description, the present invention is connected at least 2 group LED illuminating circuits with control chip, by control chip reception control signal input send for controlling respectively each group of control signal of the each group of LED illuminating circuit being connected with control chip, and in the time of the triggering signal of reception control signal input transmission, transmit respectively each group of control signal to each group of LED illuminating circuit simultaneously, light or extinguish according to the LED lamp in described each group of this group of control signal control LED illuminating circuit so that respectively organize LED illuminating circuit, this LED guardrail pipe control circuit is controlled many group LED illuminating circuits simultaneously, in the situation that LED lamp sum is certain, the corresponding minimizing of progression of cascade, accordingly, the corresponding shortening of control signal transmission time, it is the data delay time that is less than control chip the control signal transmission time, therefore, there will not be the phenomenon of LED lamp flicker, strengthen illuminating effect, improve stability, and can extend useful life of LED lamp.
Be understandable that, above execution mode is only used to principle of the present invention is described and the illustrative embodiments that adopts, but the present invention is not limited thereto.For those skilled in the art, without departing from the spirit and substance in the present invention, can make various modification and improvement, these modification and improvement are also considered as protection scope of the present invention.
Claims (10)
1. a LED guardrail pipe control circuit, is characterized in that, comprising: control chip and at least 2 group LED illuminating circuits;
Control chip is connected with control signal input with each group of LED illuminating circuit respectively, for reception control signal input send for controlling respectively each group of control signal of described each group of LED illuminating circuit, and the triggering signal of reception control signal input transmission, and in the time receiving described triggering signal, transmit and the respectively corresponding described each group of control signal of each group of LED illuminating circuit to each group of LED illuminating circuit;
Described each group of LED illuminating circuit is used for, and receives separately the control signal of this group of control chip transmission, and lights or extinguish according to the LED lamp in this group of control signal control LED illuminating circuit of described group.
2. LED guardrail pipe control circuit as claimed in claim 1, it is characterized in that, control signal input order sends the each group of control signal for controlling respectively each group of LED illuminating circuit to control chip, and after each group of control signal is all sent, sends and reset RESET signal to control chip;
Control chip specifically for, order receives the each group of control signal for controlling respectively each group of LED illuminating circuit, and in the time receiving described RESET signal, transmits and each group of LED illuminating circuit corresponding each group control signal respectively to each group of LED illuminating circuit.
3. LED guardrail pipe control circuit as claimed in claim 1 or 2, is characterized in that, control signal input is connected with control chip through the first pull-up resistor, and control chip is connected with control signal output through the second pull-up resistor.
4. LED guardrail pipe control circuit as claimed in claim 1 or 2, is characterized in that, power supply is connected with control chip through the 3rd pull-up resistor.
5. LED guardrail pipe control circuit as claimed in claim 4, is characterized in that, also comprise the first filter circuit, the first filter circuit comprises the first electric capacity, and the first electric capacity is connected with the pin being connected with the 3rd pull-up resistor of ground and control chip respectively.
6. LED guardrail pipe control circuit as claimed in claim 4, it is characterized in that, also comprise the second filter circuit being connected with control chip, the second filter circuit comprises the second electric capacity, the second electric capacity respectively with the pin being connected with the 3rd pull-up resistor of control chip, and the pin of the ground connection of control chip is connected.
7. LED guardrail pipe control circuit as claimed in claim 1 or 2, it is characterized in that, also comprise the 3rd filter circuit being connected with each group of LED illuminating circuit, the 3rd filter circuit comprises the 3rd electric capacity, an electrode of the 3rd electric capacity is connected with power supply with each group of LED illuminating circuit respectively, and another electrode of the 3rd electric capacity is connected to the ground.
8. LED guardrail pipe control circuit as claimed in claim 1 or 2, it is characterized in that, also include the power supply that is used to the power supply of this LED guardrail pipe control circuit, described power supply and respectively organize and be connected with the counnter attack diode for preventing that electric current is reverse between LED illuminating circuit.
9. LED guardrail pipe control circuit as claimed in claim 1 or 2, it is characterized in that, each group LED illuminating circuit comprises one or more LED illuminating circuit, and each paths of LEDs illuminating circuit comprises: resistance and one or more light-emitting diode, resistance and the series connection of described light-emitting diode;
Described light-emitting diode comprises white light-emitting diodes and/or RGB diode.
10. a LED guardrail pipe control device, is characterized in that, comprises multistage LED guardrail pipe control circuit as described in claim 1-9 any one, LED guardrail pipe control circuit at different levels cascade; Wherein, the control signal output of control chip and the control signal input of the control chip of next stage cascade in LED guardrail pipe control circuit at the corresponding levels is connected;
Control chip in LED guardrail pipe control circuit at the corresponding levels is used for, in the time receiving triggering signal, forward described for controlling respectively each group of control signal of the each group of LED illuminating circuit being connected with the control chip of next stage cascade to the control chip of next stage cascade by control signal output.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410183002.9A CN103945617B (en) | 2014-04-30 | 2014-04-30 | A kind of LED guardrail tube control circuit and device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410183002.9A CN103945617B (en) | 2014-04-30 | 2014-04-30 | A kind of LED guardrail tube control circuit and device |
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| CN103945617B CN103945617B (en) | 2016-03-16 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016041381A1 (en) * | 2014-09-15 | 2016-03-24 | 林启程 | Three-leg pin triggered flashing led |
| CN106255286A (en) * | 2016-07-21 | 2016-12-21 | 深圳市兴东芯科技有限公司 | Illuminator bar |
| CN110176208A (en) * | 2019-03-21 | 2019-08-27 | 深圳市天微电子股份有限公司 | The control method that signal transmits between illuminating module and luminescence chip |
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| WO2016041381A1 (en) * | 2014-09-15 | 2016-03-24 | 林启程 | Three-leg pin triggered flashing led |
| CN106255286A (en) * | 2016-07-21 | 2016-12-21 | 深圳市兴东芯科技有限公司 | Illuminator bar |
| CN110741735A (en) * | 2017-06-13 | 2020-01-31 | 昕诺飞控股有限公司 | LED module for signaling |
| CN110741735B (en) * | 2017-06-13 | 2021-10-29 | 昕诺飞控股有限公司 | LED module for signaling |
| CN110176208A (en) * | 2019-03-21 | 2019-08-27 | 深圳市天微电子股份有限公司 | The control method that signal transmits between illuminating module and luminescence chip |
| CN110176208B (en) * | 2019-03-21 | 2022-09-16 | 深圳市天微电子股份有限公司 | Light-emitting module and control method for signal transmission between light-emitting chips |
| CN112735044A (en) * | 2021-01-08 | 2021-04-30 | 黎燕红 | Medical treatment cabinet control circuit that gets it filled |
| CN114390751A (en) * | 2021-12-27 | 2022-04-22 | 深圳市共进电子股份有限公司 | LED drive circuit and LED subassembly |
| CN114390751B (en) * | 2021-12-27 | 2024-05-10 | 深圳市共进电子股份有限公司 | LED drive circuit and LED assembly |
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