CN101988674A - LED two-sided direction signal lamp - Google Patents
LED two-sided direction signal lamp Download PDFInfo
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- CN101988674A CN101988674A CN2009101091825A CN200910109182A CN101988674A CN 101988674 A CN101988674 A CN 101988674A CN 2009101091825 A CN2009101091825 A CN 2009101091825A CN 200910109182 A CN200910109182 A CN 200910109182A CN 101988674 A CN101988674 A CN 101988674A
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Abstract
The invention relates to an LED two-sided direction signal lamp which comprises a first constant-current drive unit, a second constant-current drive unit, a first LED lamp, a second LED lamp, an interlocking unit and a blink control unit, wherein an external direct-current power supply respectively drives the first LED lamp and the second LED lamp through the first constant-current drive unit and the second constant-current drive unit; the blink control unit is arranged between the direct-current power supply and the first constant-current drive unit or the direct-current power supply and the second constant-current drive unit and used for controlling the blink of the first LED lamp and the second LED lamp; and the interlocking unit is connected between the first constant-current drive unit and the second constant-current drive unit for controlling the first LED lamp and the second LED lamp for realizing the interlocking. The LED two-sided direction signal lamp has the advantages of high efficiency, long service life, high brightness and good shock resistance, can be suitable for the wide voltage input range, can realize accurate interlocking control on the two-sided LED lamp, and effectively avoids the safety accidents.
Description
Technical field
The present invention relates to the last vehicle of train signal lamp, more particularly, relate to a kind of LED two-way signal circuit for lamp.
Background technology
At present, substantially all adopt incandescent lamp as signal optical source in the railway systems, incandescent lamp has that electrical efficiency is low, the life-span is short, illumination is low, anti-vibration resistance difference and photochromic single shortcoming.
Along with one side LED cold light source technology is gradually improved, and speed increase in vehicle is to the requirement of signal optical source on the other hand, and LED signal lamp light source has become the new technology in railway signal field.Led light source has the advantage of brightness height, good directionality, life-span length and power saving because of its principle of luminosity, and final will the replacement in the railway signal field has the main stream light sources that incandescent light source becomes signal lamp now.
The last vehicle of train signal lamp is two-sided bearing signal lamp, and its double face lamp light source glimmers with certain frequency.China Patent No. is that the patent of CN2585020Y discloses a kind of so two-sided directional light, comprises lamp holder, the lamp stand that is connected with lamp holder, and the other end of lamp stand is connected with lamp socket.This patent relates generally to two-sided directional light structure Design, and does not do corresponding improvement on circuit, has ignored the stability requirement of two-sided Position Light Signal.Yet,, must guarantee that two signal lamps whiles are bright or go out simultaneously at the two-sided bearing signal lamp that last vehicle of train uses.Guarantee the accuracy of signal like this, avoided the security incident that causes because of signal error.Therefore, must effectively improve the control circuit of two-sided directional light, ensure two signal lamp realization interlocking control.In addition, because train power supply stability is not high, so this signal lamp also should be suitable for the power supply supply of wide voltage.
Summary of the invention
The technical problem to be solved in the present invention is, existing two-sided bearing signal lamp employing incandescent lamp electrical efficiency is low, the life-span is short, illumination is low, and can't accurately ensure the defective of interlocking between the signal lamp in two-sided orientation, provide a kind of employing LED as light source, and can accurately realize the two-sided bearing signal lamp of interlocking.
The technical solution adopted for the present invention to solve the technical problems is: adopt the preferable LED signal lamp light source of performance, and realize the accurate interlocking of dual surface LED lamp is controlled by the design of interlocking unit, increase voltage regulation unit simultaneously to wide voltage input carrying out voltage stabilizing.
The invention provides the two-sided bearing signal lamp of a kind of LED, comprise first constant current driving unit, second constant current driving unit, a LED lamp, the 2nd LED lamp, interlocking unit and flicker control module;
External direct current power supply drives a described LED lamp and the 2nd LED lamp by described first constant current driving unit and the second constant current driving unit constant current respectively;
Described flicker control module is arranged between the described dc source and first constant current driving unit, between the perhaps described dc source and second constant current driving unit, is used to control the flicker of a described LED lamp and the 2nd LED lamp;
Described interlocking unit is connected between described first constant current driving unit and second constant current driving unit, is used to control a described LED lamp and the 2nd LED lamp and realizes interlocking.
The two-sided bearing signal lamp of LED of the present invention also comprises being connected described dc source voltage regulation unit afterwards, is used to flicker control module, first constant current driving unit and second constant current driving unit that burning voltage is provided.
In the two-sided bearing signal lamp of LED of the present invention, described voltage regulation unit comprises: first resistance, second resistance, voltage-stabiliser tube, electrochemical capacitor and first electric capacity; Described first resistance and the second resistance parallel connection, an end be as the input of voltage regulation unit, and the other end is as the output of voltage regulation unit, and by voltage-stabiliser tube, electrochemical capacitor and first capacity earth in parallel.
The two-sided bearing signal lamp of LED of the present invention also comprises the anti-reverse unit that is connected between described dc source and the voltage regulation unit, is used to prevent the reversal connection of dc source both positive and negative polarity and damages circuit.
In the two-sided bearing signal lamp of LED of the present invention, described anti-reverse unit is the bridge heap.
In the two-sided bearing signal lamp of LED of the present invention, described first constant current driving unit comprises the first constant current chip and second metal-oxide-semiconductor; Described voltage regulation unit or flicker control module are output as the first constant current chip power supply, and the conducting of the described first constant current chip controls, second metal-oxide-semiconductor is described LED lamp constant current power supply.
In the two-sided bearing signal lamp of LED of the present invention, described second constant current driving unit comprises the second constant current chip and first metal-oxide-semiconductor; Described voltage regulation unit or flicker control module are output as the second constant current chip power supply, and the conducting of the described second constant current chip controls, first metal-oxide-semiconductor is described the 2nd LED lamp constant current power supply.
In the two-sided bearing signal lamp of LED of the present invention, described interlocking unit comprises: the 3rd metal-oxide-semiconductor and the 4th metal-oxide-semiconductor; The source electrode of described the 4th metal-oxide-semiconductor and drain electrode are connected between the drain electrode and the described first constant current chip, first pin of described second metal-oxide-semiconductor, the source electrode of described the 3rd metal-oxide-semiconductor and drain electrode are connected between the drain electrode and the described second constant current chip, first pin of described first metal-oxide-semiconductor, and the source electrode of described second metal-oxide-semiconductor is communicated with the grid of the 3rd metal-oxide-semiconductor, and the source electrode of described first metal-oxide-semiconductor is communicated with the grid of the 4th metal-oxide-semiconductor.
In the two-sided bearing signal lamp of LED of the present invention, described flicker control module comprises first d type flip flop and second d type flip flop of series connection.
In the two-sided bearing signal lamp of LED of the present invention, the described first constant current chip and the second constant current chip model are QX7136.
Implement the two-sided bearing signal lamp of LED of the present invention, have following beneficial effect:
1, the LED light fixture that adopts of the present invention has that high efficiency, long-life, brightness height, shock resistance are good, broad application temperature range, does not need frequently to change the advantage of light source, has also saved cost;
2, the present invention realizes the accurate interlocking of dual surface LED lamp is controlled by the interlocking unit, can not cause the train signal misjudgment, has effectively avoided security incident;
3, the present invention adopts the flicker control module that d type flip flop is formed, and has realized the flicker control to the two-sided bearing signal lamp of LED;
4, the two-sided bearing signal lamp of LED of the present invention has increased anti-reverse unit, can prevent effectively that the dc source reversal connection from causing damage to circuit;
5, the two-sided bearing signal lamp of LED of the present invention has also increased voltage regulation unit, can carry out voltage stabilizing to wide voltage input, is applicable to the DC43-53V wide-voltage range.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the structural representation of the two-sided bearing signal lamp of LED of the present invention embodiment;
Fig. 2 is the circuit theory diagrams of the two-sided bearing signal lamp of LED of the present invention embodiment.
The specific embodiment
Two-sided bearing signal lamp provided by the invention can be applicable to occasions such as railway, aviation, traffic for provide the light fixture of bearing signal simultaneously on both direction.As shown in Figure 1, be the structural representation of the two-sided bearing signal lamp of LED of the present invention embodiment; The two-sided bearing signal lamp of LED comprises anti-reverse unit 100, voltage regulation unit 200, first constant current driving unit 301, second constant current driving unit 302, a LED lamp 401, the 2nd LED lamp 402, interlocking unit 500 and flicker control module 700; Described anti-reverse unit 100 inputs link to each other with dc source 600, damage circuit to prevent dc source 600 both positive and negative polarity reversal connections, and described anti-reverse unit 100 outputs link to each other with a LED lamp 401 and the 2nd LED lamp 402 positive poles respectively, are its power supply; Described voltage regulation unit 200 links to each other with described anti-reverse unit 100 outputs, to export stable voltage; Described first constant current driving unit, 301 inputs link to each other with described voltage regulation unit 200, and output links to each other with a described LED lamp 401 negative poles, and it is luminous to drive a LED lamp 401 with constant current; Described second constant current driving unit, 302 inputs link to each other with described voltage regulation unit 200, and output links to each other with described the 2nd LED lamp 402 negative poles, and it is luminous to drive the 2nd LED lamp 402 with constant current; Described interlocking unit 500 is connected between a described LED lamp 401 and the 2nd LED lamp 402, to control a described LED lamp 401 and the 402 realization interlockings of the 2nd LED lamp.Described flicker control module 700 is arranged between the described dc source 600 and first constant current driving unit 301, between the perhaps described dc source 600 and second constant current driving unit 302, is used to control a described LED lamp 401 and 402 flickers of the 2nd LED lamp.In the present embodiment, described flicker control module 700 is arranged on before second constant current driving unit.
As shown in Figure 2, be the circuit theory diagrams of the two-sided bearing signal lamp of LED of the present invention embodiment.In the present embodiment, in the dual surface LED lamp, a LED lamp is a red LED lamp, and the 2nd LED lamp is a white led lamps.
Below each circuit unit among Fig. 2 is elaborated:
1, anti-reverse unit 100
2, voltage regulation unit 200
The signal of telecommunication from the port 2 of bridge heap D1 is drawn by switch S 1 its conducting of control, is input to voltage regulation unit 200 then; Voltage regulation unit 200 comprises: first resistance R 4, second resistance R 5, voltage-stabiliser tube D2, electrochemical capacitor C1 and first capacitor C 4.Described first resistance R 4 and 5 parallel connections of second resistance R, the output of the described anti-reverse unit 100 of a termination, the other end is by voltage-stabiliser tube D2, electrochemical capacitor C1 and first capacitor C, 4 ground connection in parallel.By selecting the parameter of voltage-stabiliser tube D2, can regulate the voltage of its output.Dc source 600 is direct current 48V input, what reality was imported may be the wide voltage of 43-53V direct current, metering function in parallel through R4 and R6, then by the D2 voltage stabilizing, C1 is an electrolytic capacitor filter, prevent voltage pulsation, the chip for first constant current driving unit 301 and second constant current driving unit 302 provides stable power then.The output of voltage regulation unit 200 also links to each other with yellow LED lamp by resistance R 8, is bright when circuit working, thereby indicates for the user provides work.
3, first constant current driving unit 301
First constant current driving unit 301 comprises the first constant current chip U3.In the present embodiment, the model selected for use of constant current chip U3 is QX7136.First constant current driving unit 301 also comprises: the first constant current chip U3, the second metal-oxide-semiconductor Q2, the 3rd resistance R 0, the 4th resistance R 10, the 5th resistance R 11, the 6th resistance R 7 and second capacitor C 6.The first constant current chip U3 tripod VDD connects voltage regulation unit 200 by the 3rd resistance R 0, the described first constant current chip U3 the 4th pin DRV connects the grid of the described second metal-oxide-semiconductor Q2, the described first constant current chip U3, the first pin CS is by in parallel the 6th resistance R 7 and second capacitor C, 6 ground connection, the negative pole that four resistance R 10 and five resistance R 11 of the source electrode of the described second metal-oxide-semiconductor Q2 by parallel connection connects a described LED lamp 401.The first constant current chip U3 by the current detecting on the R7, regulates output voltage for transferring the stream chip, and the Vgs voltage of stream metal-oxide-semiconductor Q2 is transferred in control, regulates the Q2 conducting resistance, thereby regulates a LED lamp 401 electric currents, reaches the purpose of LED constant current.
4, second constant current driving unit 302
Second constant current driving unit 302 comprises the second constant current chip U2.In the present embodiment, the model selected for use of the second constant current chip U2 is QX7136.Second constant current driving unit 302 also comprises: the first metal-oxide-semiconductor Q1, the 7th resistance R 5, the 8th resistance R 15 and the 9th resistance R 14.The second constant current chip U2 the 4th pin DRV connects the grid of the described first metal-oxide-semiconductor Q1, the second constant current chip U2, the first pin CS is by the 7th resistance R 5 ground connection, the negative pole that eight resistance R 15 and nine resistance R 14 of the source electrode of the first metal-oxide-semiconductor Q1 by parallel connection connects described the 2nd LED lamp 402.The second constant current chip U2 by the current detecting on the R17, regulates output voltage for transferring the stream chip, and the Vgs voltage of the stream first metal-oxide-semiconductor Q1 is transferred in control, regulates the Q1 conducting resistance, thereby regulates the 2nd LED402 electric current, reaches the purpose of LED constant current.
Circuit has also fully taken into account the replaceability of light source, can satisfy various low-power LED light sources.R21 and R13 can weld one of them according to concrete light source characteristic, and same R12 and R20 also can weld one of them according to concrete light source characteristic, and the driving voltage of the 3rd metal-oxide-semiconductor Q3 and the 4th metal-oxide-semiconductor Q4 so just effectively is set, and guarantee that circuit is stable.
6, the interlocking unit 500
Foregoing circuit has been realized the interlocking control to a LED lamp and the 2nd LED lamp.As mentioned above, node between the 15 resistance R 16 and the tenth resistance R 17 links to each other with the grid of described the 3rd metal-oxide-semiconductor Q3, effectively control the driving voltage of the 3rd metal-oxide-semiconductor Q3, node between described the 11 resistance R 18 and the 12 resistance R 19 links to each other with the grid of described the 4th metal-oxide-semiconductor Q4 simultaneously, effectively control the driving voltage of the 4th metal-oxide-semiconductor Q4, make the mutual public a part of resource of circuit of a LED lamp 401 and the 2nd LED lamp 402, thereby realize the purpose of interlocking.
7, flicker control module 700
In this unit, used the d type flip flop U1A and the U1B of two series connection, realized flicker control the LED lamp.The 5th pin D of the first d type flip flop U1A meets voltage regulation unit 200, the tripod CK by parallel resistor R2 and capacitor C 2 ground connection, connecting resistance R1 between the 5th pin D and the tripod CK; It is non-that tripod meets tripod Q by diode D1; The 6th pin S holds ground connection, and the 4th pin passes through capacitor C 3 ground connection, and receives the first pin Q by resistance R 3.The first pin Q of the first d type flip flop U1A meets the 11 pin CK of the second d type flip flop U1B, octal S and the tenth pin R ground connection, and it is non-that the 9th pin D meets the 12 pin Q.The second d type flip flop U1B divides the tenth tripod Q as output, is second constant current chip U2 power supply.The first d type flip flop U1A can produce triggering signal, and makes the cycle expand as twice by the second d type flip flop U1B, thereby is input to 302 flickers of second constant current driving unit, 402 controls the 2nd LED lamp.Simultaneously by interlocking unit 500 and 301 flickers of first constant current driving unit, 401 controls the one LED lamp.
The two-sided bearing signal lamp of LED provided by the invention, high brightness iron mark led light source is selected in employing for use, performance satisfies TB/T 2175-90 (People's Republic of China's railway systems standard) fully, and have that high efficiency, long-life, brightness height, shock resistance are good, broad application temperature range, do not need frequently to change the advantage of light source, also saved cost.And voltage stabilizing is carried out in wide voltage input by the voltage regulation unit that increases, be applicable to the DC43-53V wide-voltage range.The present invention also uses the flicker of d type flip flop control LED lamp, and realizes the accurate interlocking of dual surface LED lamp is controlled by the interlocking unit, can not cause the train signal misjudgment, has effectively avoided security incident.
Above embodiment has only expressed preferred implementation of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention; Should be pointed out that for the person of ordinary skill of the art without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention; Therefore, all the claim scope is done according to the present invention equivalents and modification all should belong to the covering scope of claim of the present invention.
Claims (10)
1. the two-sided bearing signal lamp of LED is characterized in that, comprises first constant current driving unit (301), second constant current driving unit (302), a LED lamp (401), the 2nd LED lamp (402), interlocking unit (500) and flicker control module (700);
External direct current power supply (600) drives a described LED lamp (401) and the 2nd LED lamp (402) by described first constant current driving unit (301) and second constant current driving unit (302) constant current respectively;
Described flicker control module (700) is arranged between described dc source (600) and first constant current driving unit (301), between perhaps described dc source (600) and second constant current driving unit (302), be used to control the flicker of a described LED lamp (401) and the 2nd LED lamp (402);
Described interlocking unit (500) is connected between described first constant current driving unit (301) and second constant current driving unit (302), is used to control a described LED lamp (401) and the 2nd LED lamp (402) and realizes interlocking.
2. the two-sided bearing signal lamp of LED according to claim 1, it is characterized in that, also comprise being connected described dc source (600) voltage regulation unit (200) afterwards, be used to flicker control module (700), first constant current driving unit (301) and second constant current driving unit (302) that burning voltage is provided.
3. the two-sided bearing signal lamp of LED according to claim 2 is characterized in that, described voltage regulation unit (200) comprising: first resistance (R4), second resistance (R5), voltage-stabiliser tube (D2), electrochemical capacitor (C1) and first electric capacity (C4); Described first resistance (R4) and second resistance (R5) parallel connection, one end is as the input of voltage regulation unit (200), the other end is as the output of voltage regulation unit (200), and voltage-stabiliser tube (D2), electrochemical capacitor (C1) and first electric capacity (C4) ground connection of passing through parallel connection.
4. the two-sided bearing signal lamp of LED according to claim 2, it is characterized in that, also comprise the anti-reverse unit (100) that is connected between described dc source (600) and the voltage regulation unit (200), be used to prevent dc source (600) both positive and negative polarity reversal connection and damage circuit.
5. the two-sided bearing signal lamp of LED according to claim 4 is characterized in that, described anti-reverse unit (100) is bridge heap (D1).
6. according to above-mentioned any two-sided bearing signal lamp of the described LED of claim, it is characterized in that described first constant current driving unit (301) comprises the first constant current chip (U3) and second metal-oxide-semiconductor (Q2); Described voltage regulation unit (200) or flicker control module (700) are output as the power supply of the first constant current chip (U3), and the conducting of the described first constant current chip (U3) control second metal-oxide-semiconductor (Q2) is described LED lamp (401) constant current power supply.
7. according to above-mentioned any two-sided bearing signal lamp of the described LED of claim, it is characterized in that described second constant current driving unit (302) comprises the second constant current chip (U2) and first metal-oxide-semiconductor (Q1); Described voltage regulation unit (200) or flicker control module (700) are output as the power supply of the second constant current chip (U2), and the conducting of the described second constant current chip (U2) control first metal-oxide-semiconductor (Q1) is described the 2nd LED lamp (402) constant current power supply.
8. according to claim 6 and the two-sided bearing signal lamp of 7 described LED, it is characterized in that described interlocking unit (500) comprising: the 3rd metal-oxide-semiconductor (Q3) and the 4th metal-oxide-semiconductor (Q4); The source electrode of described the 4th metal-oxide-semiconductor (Q4) and drain electrode are connected between the drain electrode and described first constant current chip (U3) first pin (CS) of described second metal-oxide-semiconductor (Q2), the source electrode of described the 3rd metal-oxide-semiconductor (Q3) and drain electrode are connected between the drain electrode and described second constant current chip (U2) first pin (CS) of described first metal-oxide-semiconductor (Q1), and the source electrode of described second metal-oxide-semiconductor (Q2) is communicated with the grid of the 3rd metal-oxide-semiconductor (Q3), and the source electrode of described first metal-oxide-semiconductor (Q1) is communicated with the grid of the 4th metal-oxide-semiconductor (Q4).
9. the two-sided bearing signal lamp of LED according to claim 1 is characterized in that, described flicker control module (700) comprises first d type flip flop (U1A) and second d type flip flop (U1B) of series connection.
10. according to the two-sided bearing signal lamp of the described LED of claim 6 to 8, it is characterized in that the described first constant current chip (U3) and second constant current chip (U2) model are QX7136.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101091825A CN101988674B (en) | 2009-07-30 | 2009-07-30 | LED two-sided direction signal lamp |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101091825A CN101988674B (en) | 2009-07-30 | 2009-07-30 | LED two-sided direction signal lamp |
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| CN101988674A true CN101988674A (en) | 2011-03-23 |
| CN101988674B CN101988674B (en) | 2012-02-15 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103234157A (en) * | 2013-05-08 | 2013-08-07 | 金明武 | Light-emitting diode (LED) bulb and LED street lamp |
| CN104869698A (en) * | 2015-04-20 | 2015-08-26 | 付志民 | Medical headlamp circuit |
| CN112653425A (en) * | 2020-11-27 | 2021-04-13 | 凯迈（洛阳）测控有限公司 | Universal analog conditioning module |
| CN115050197A (en) * | 2022-05-11 | 2022-09-13 | 河南勇威特种设备有限公司 | Traffic signal lamp remote control device |
-
2009
- 2009-07-30 CN CN2009101091825A patent/CN101988674B/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103234157A (en) * | 2013-05-08 | 2013-08-07 | 金明武 | Light-emitting diode (LED) bulb and LED street lamp |
| CN103234157B (en) * | 2013-05-08 | 2014-11-19 | 金明武 | Light-emitting diode (LED) bulb and LED street lamp |
| CN104869698A (en) * | 2015-04-20 | 2015-08-26 | 付志民 | Medical headlamp circuit |
| CN112653425A (en) * | 2020-11-27 | 2021-04-13 | 凯迈（洛阳）测控有限公司 | Universal analog conditioning module |
| CN115050197A (en) * | 2022-05-11 | 2022-09-13 | 河南勇威特种设备有限公司 | Traffic signal lamp remote control device |
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| Publication number | Publication date |
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| CN101988674B (en) | 2012-02-15 |
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