CN104036652B - A kind of driving circuit of humanoid traffic lights - Google Patents
A kind of driving circuit of humanoid traffic lights Download PDFInfo
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- CN104036652B CN104036652B CN201410271842.0A CN201410271842A CN104036652B CN 104036652 B CN104036652 B CN 104036652B CN 201410271842 A CN201410271842 A CN 201410271842A CN 104036652 B CN104036652 B CN 104036652B
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Abstract
The invention discloses a kind of driving circuit of humanoid traffic lights, comprise the power supply unit, rectification unit, filtering voltage regulation unit, the display unit that connect successively, adopt the display unit circuit connected mode of the program, make when a LED is damaged time, the work of other LED in series arm can not be had influence on, the electric current that simultaneously other branch roads can not be made to flow through is excessive, cause the excessive damage LED of pressure drop, avoid in traffic lights use procedure the problems such as causing traffic congestion that breaks down, save maintenance cost simultaneously.Voltage regulation unit adopts three-terminal voltage-stabilizing chip, makes the supply voltage of display unit more stable, avoids voltage instability to cause impact to LED, extends the serviceable life of LED.
Description
Technical field
The invention belongs to the technical field of traffic lights application, be specifically related to a kind of driving circuit of humanoid traffic lights.
Background technology
By multiple LED Zu Cheng ﹐, conventional light source such as Bai Chi Deng ﹑ Halogen lamp LED is all by a bulb luminescence to the light source of LED traffic signal lamp, as long as therefore conventional light source considers a focus in design, compares be easy to distribute to Light distribation.And multiple focus will be considered during LED light source design, and also there is certain requirement to the installation of LED, if install the inconsistent light efficiency homogeneity that will affect light-emitting area, therefore the appearance how avoiding this defect will be considered in the design, if optical design is too simple, the Light distribation of signal lamp mainly carrys out Bao Zheng ﹐ so to the photodistributed requirement of LED itself and installation requirement all relatively strictly by the visual angle of LED itself, otherwise this phenomenon will be fairly obvious.The luminous intensity distribution of present many producers to LED signal lamp have employed the doublet mode first collecting again luminous intensity distribution, so first the light that multiple LED sends is accumulated a branch of directional light, and then meets the needs of all directions by luminous intensity distribution.Such design just alleviates the photodistributed inequality of LED itself and installs the deviation produced.
When designing the driving circuit of LED, we first to consider following some:
1, driving power should use 220V ac voltage rectifier filtering Er get ﹐ and the energy that practices every conceivable frugality.
2, the luminosity impact of mains voltage variations and environmental parameter (as environment temperature) Bianization Shi ﹐ reply LED is less.
3, as LED, to damage the electric current that Shi ﹐ can not make other branch road flow through excessive, impacts the normal work of LED.
The LED that 4, can not affect same branch road as a LED damage Shi ﹐ does not work.
Therefore, the driving circuit designing LED traffic lights just seems particularly important.
Summary of the invention
Technical matters to be solved by this invention is: the driving circuit providing a kind of humanoid traffic lights, by changing the circuit connecting mode of display unit, solve when a LED damages, when cause connecting with it 4 problems that LED does not work and a branch road being had problem, other branch roads bear the excessive problem causing damage of electric current.
The present invention is for solving the problems of the technologies described above by the following technical solutions:
A kind of driving circuit of humanoid traffic lights, comprise the power supply unit connected successively, rectification unit, filtering voltage regulation unit, display unit, described power supply unit comprises transformer, described rectification unit comprises the rectifier bridge of first to fourth diode composition, described display unit comprises multiple luminous branch road and a voltage stabilizing branch road, each luminous branch road forms by four light emitting diodes and a resistant series, wherein the anode of the first light emitting diode is connected with the positive pole of circuit output end of pressure-stabilizing, the negative electrode of the first light emitting diode is connected with the anode of the second light emitting diode, the negative electrode of the second light emitting diode is connected with the anode of the 3rd light emitting diode, the negative electrode of the 3rd light emitting diode is connected with the anode of the 4th light emitting diode, 4th light emitting diode is connected with one end of resistance, the other end of resistance and the connection of circuit output end of pressure-stabilizing, the negative electrode of the first light emitting diode of luminous branch road is interconnected, the negative electrode of the second light emitting diode of luminous branch road is interconnected, the negative electrode of the 3rd light emitting diode of luminous branch road is interconnected, the negative electrode of the 4th light emitting diode of luminous branch road is interconnected.
Described filtering voltage regulation unit comprises the first to the 5th electric capacity, a current-limiting resistance, switching tube, a three-terminal voltage-stabilizing chip, wherein the first electric capacity, the 4th Capacitance parallel connection are in the output terminal of rectification unit, and the positive pole of rectification circuit output end is connected with one end of described current-limiting resistance, the input end of switching tube respectively; The other end of described current-limiting resistance is connected with the control end of switching tube, the input end of three-terminal voltage-stabilizing chip respectively; Output terminal, the output terminal of three-terminal voltage-stabilizing chip of described switching tube are connected with the input end of display unit; The grounding leg of three-terminal voltage-stabilizing chip is connected with the output terminal of display unit; Described second electric capacity, the 3rd electric capacity, the 5th Capacitance parallel connection are between the input/output terminal of display unit.
Described first to the 3rd electric capacity is polar capacitor, and the first electric capacity, the second electric capacity are polar capacitor, and capacity is 100uF, and withstand voltage is 50V; The capacity of the 3rd electric capacity is 10uF, and withstand voltage is 50V; The capacity of the 4th electric capacity, the 5th electric capacity is 1uF, and withstand voltage is 50V.
Described polar capacitor is electrochemical capacitor, and described 4th electric capacity, the 5th electric capacity are ceramic condenser.
Described three-terminal voltage-stabilizing chip is 78L18.
Compared with prior art, the present invention has following beneficial effect:
1, the display unit circuit connected mode of the program is adopted, make when a LED is damaged time, the work of other LED in series arm can not be had influence on, avoid in traffic lights use procedure the problems such as causing traffic congestion that breaks down, saved maintenance cost simultaneously.
2, voltage regulation unit adopts three-terminal voltage-stabilizing chip, makes the supply voltage of display unit more stable, avoids voltage instability to cause impact to LED, extends the serviceable life of LED.
3, when a LED lamp tube is damaged, can not affect the work of same other LED of branch road, the electric current that simultaneously other branch roads can not be made to flow through is excessive, causes the excessive damage LED of pressure drop.
Accompanying drawing explanation
Fig. 1 is traffic light circuit figure of the present invention.
Embodiment
Below in conjunction with accompanying drawing, structure of the present invention and the course of work are described further.
As shown in Figure 1, a kind of driving circuit of humanoid traffic lights, comprise the power supply unit connected successively, rectification unit, filtering voltage regulation unit, display unit, described power supply unit comprises transformer T1, described rectification unit comprises diode D1, D2, D3, the rectifier bridge of D4 composition, described display unit comprises multiple luminous branch road and a voltage stabilizing branch road, each luminous branch road forms by four light emitting diodes and a resistant series, wherein the anode of the first light emitting diode is connected with the positive pole of circuit output end of pressure-stabilizing, the negative electrode of the first light emitting diode is connected with the anode of the second light emitting diode, the negative electrode of the second light emitting diode is connected with the anode of the 3rd light emitting diode, the negative electrode of the 3rd light emitting diode is connected with the anode of the 4th light emitting diode, 4th light emitting diode is connected with one end of resistance, the other end of resistance and the connection of circuit output end of pressure-stabilizing, the negative electrode of the first light emitting diode of luminous branch road is interconnected, the negative electrode of the second light emitting diode of luminous branch road is interconnected, the negative electrode of the 3rd light emitting diode of luminous branch road is interconnected, the negative electrode of the 4th light emitting diode of luminous branch road is interconnected.
Described filtering voltage regulation unit comprises the first to the 5th electric capacity, a current-limiting resistance R1, switching tube Q1, a three-terminal voltage-stabilizing chip U1, wherein the first electric capacity C1, the 4th electric capacity C4 are parallel to the output terminal of rectification unit, and the positive pole of rectification circuit output end is connected with one end of described current-limiting resistance, the input end of switching tube Q1 respectively; The other end of described current-limiting resistance R1 is connected with the control end of switching tube Q1, the input end of three-terminal voltage-stabilizing chip U1 respectively; The output terminal of described switching tube Q1, the output terminal of three-terminal voltage-stabilizing chip U1 are connected with the input end of display unit; The grounding leg of three-terminal voltage-stabilizing chip U1 is connected with the output terminal of display unit; Described second electric capacity C2, the 3rd electric capacity C3, the 5th electric capacity C5 are parallel between the input/output terminal of display unit.
Described first to the 3rd electric capacity is polar capacitor, and the first electric capacity C1, the second electric capacity C2 are polar capacitor, and capacity is 100uF, and withstand voltage is 50V; The capacity of the 3rd electric capacity C3 is 10uF, and withstand voltage is 50V; The capacity of the 4th electric capacity C4, the 5th electric capacity C5 is 1uF, and withstand voltage is 50V.
Described polar capacitor is electrochemical capacitor, and described 4th electric capacity, the 5th electric capacity are ceramic condenser.
Described three-terminal voltage-stabilizing chip U1 is 78L18.
Claims (5)
1. the driving circuit of humanoid traffic lights, comprise the power supply unit connected successively, rectification unit, filtering voltage regulation unit, display unit, described power supply unit comprises transformer, described rectification unit comprises the rectifier bridge of first to fourth diode composition, described filtering voltage regulation unit comprises input end, output terminal, earth terminal, described display unit comprises multiple luminous branch road, each luminous branch road forms by four light emitting diodes and a resistant series, wherein the anode of the first light emitting diode is connected with the output terminal of filtering voltage regulation unit, the negative electrode of the first light emitting diode is connected with the anode of the second light emitting diode, the negative electrode of the second light emitting diode is connected with the anode of the 3rd light emitting diode, the negative electrode of the 3rd light emitting diode is connected with the anode of the 4th light emitting diode, 4th light emitting diode is connected with one end of resistance, the other end of resistance is connected with the earth terminal of filtering voltage regulation unit, it is characterized in that: the negative electrode of the first light emitting diode of luminous branch road is interconnected, the negative electrode of the second light emitting diode of luminous branch road is interconnected, the negative electrode of the 3rd light emitting diode of luminous branch road is interconnected, the negative electrode of the 4th light emitting diode of luminous branch road is interconnected.
2. the driving circuit of humanoid traffic lights according to claim 1, it is characterized in that: described filtering voltage regulation unit comprises the first to the 5th electric capacity, a current-limiting resistance, switching tube, a three-terminal voltage-stabilizing chip, wherein the first electric capacity, the 4th Capacitance parallel connection are in the output terminal of rectification unit, and the positive pole of the output terminal of rectification unit is connected with one end of described current-limiting resistance, the input end of switching tube respectively; The other end of described current-limiting resistance is connected with the control end of switching tube, the input end of three-terminal voltage-stabilizing chip respectively; Output terminal, the output terminal of three-terminal voltage-stabilizing chip of described switching tube are connected with the input end of display unit; The grounding leg of three-terminal voltage-stabilizing chip is connected with the output terminal of display unit; Described second electric capacity, the 3rd electric capacity, the 5th Capacitance parallel connection are between the input/output terminal of display unit.
3. the driving circuit of humanoid traffic lights according to claim 2, is characterized in that: described first electric capacity is polar capacitor to the 3rd electric capacity, and wherein, the capacity of the first electric capacity, the second electric capacity is 100uF, and withstand voltage is 50V; The capacity of the 3rd electric capacity is 10uF, and withstand voltage is 50V; The capacity of the 4th electric capacity, the 5th electric capacity is 1uF, and withstand voltage is 50V.
4. the driving circuit of humanoid traffic lights according to claim 3, is characterized in that: described polar capacitor is electrochemical capacitor, and described 4th electric capacity, the 5th electric capacity are ceramic condenser.
5. the driving circuit of humanoid traffic lights according to any one of claim 1 to 4, is characterized in that: described three-terminal voltage-stabilizing chip is 78L18.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410271842.0A CN104036652B (en) | 2014-06-18 | 2014-06-18 | A kind of driving circuit of humanoid traffic lights |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410271842.0A CN104036652B (en) | 2014-06-18 | 2014-06-18 | A kind of driving circuit of humanoid traffic lights |
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| CN104036652A CN104036652A (en) | 2014-09-10 |
| CN104036652B true CN104036652B (en) | 2016-01-20 |
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3747063A (en) * | 1970-09-08 | 1973-07-17 | Simplec Mfg Co | Bistable circuit controlled sequential lamp indicator |
| CN2070483U (en) * | 1990-05-26 | 1991-01-30 | 常州市银河电子实业公司 | Charged traffic signal light |
| CN2379851Y (en) * | 1999-06-01 | 2000-05-24 | 张祯钜 | Programmed traffic signal light |
| CN1761374A (en) * | 2004-10-15 | 2006-04-19 | 东芝照明技术株式会社 | LED type indicator lamp lighting device and indicator lamp system |
| CN2872502Y (en) * | 2005-01-24 | 2007-02-21 | 梁逊荣 | Three in one traffic lights |
| CN2911830Y (en) * | 2006-07-10 | 2007-06-13 | 蒋宝民 | Radio remote traffic signal lamps |
| CN201166334Y (en) * | 2008-03-12 | 2008-12-17 | 四川通安实业有限公司 | Energy-saving environment-friendly type highway traffic signal lamp |
| CN102171739A (en) * | 2008-08-15 | 2011-08-31 | 照明有限责任公司 | Traffic LED lamp with internal circuit backup system |
| CN103106800A (en) * | 2012-12-29 | 2013-05-15 | 上海澳星照明电器制造有限公司 | Driving power circuit of traffic light |
| CN203503166U (en) * | 2013-09-27 | 2014-03-26 | 吉安市永安交通设施有限公司 | Pedestrian crossing dynamic signal lamp |
| CN204010327U (en) * | 2014-06-18 | 2014-12-10 | 无锡市崇安区科技创业服务中心 | A kind of driving circuit of humanoid traffic lights |
-
2014
- 2014-06-18 CN CN201410271842.0A patent/CN104036652B/en not_active Expired - Fee Related
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3747063A (en) * | 1970-09-08 | 1973-07-17 | Simplec Mfg Co | Bistable circuit controlled sequential lamp indicator |
| CN2070483U (en) * | 1990-05-26 | 1991-01-30 | 常州市银河电子实业公司 | Charged traffic signal light |
| CN2379851Y (en) * | 1999-06-01 | 2000-05-24 | 张祯钜 | Programmed traffic signal light |
| CN1761374A (en) * | 2004-10-15 | 2006-04-19 | 东芝照明技术株式会社 | LED type indicator lamp lighting device and indicator lamp system |
| CN2872502Y (en) * | 2005-01-24 | 2007-02-21 | 梁逊荣 | Three in one traffic lights |
| CN2911830Y (en) * | 2006-07-10 | 2007-06-13 | 蒋宝民 | Radio remote traffic signal lamps |
| CN201166334Y (en) * | 2008-03-12 | 2008-12-17 | 四川通安实业有限公司 | Energy-saving environment-friendly type highway traffic signal lamp |
| CN102171739A (en) * | 2008-08-15 | 2011-08-31 | 照明有限责任公司 | Traffic LED lamp with internal circuit backup system |
| CN103106800A (en) * | 2012-12-29 | 2013-05-15 | 上海澳星照明电器制造有限公司 | Driving power circuit of traffic light |
| CN203503166U (en) * | 2013-09-27 | 2014-03-26 | 吉安市永安交通设施有限公司 | Pedestrian crossing dynamic signal lamp |
| CN204010327U (en) * | 2014-06-18 | 2014-12-10 | 无锡市崇安区科技创业服务中心 | A kind of driving circuit of humanoid traffic lights |
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| CN104036652A (en) | 2014-09-10 |
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Granted publication date: 20160120 Termination date: 20170618 |