CN102098841A - Railway light-emitting diode (LED) signal lamp lightening control circuit and railway light-emitting diode (LED) signal lamp lightening control method - Google Patents
Railway light-emitting diode (LED) signal lamp lightening control circuit and railway light-emitting diode (LED) signal lamp lightening control method Download PDFInfo
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- CN102098841A CN102098841A CN2011100007914A CN201110000791A CN102098841A CN 102098841 A CN102098841 A CN 102098841A CN 2011100007914 A CN2011100007914 A CN 2011100007914A CN 201110000791 A CN201110000791 A CN 201110000791A CN 102098841 A CN102098841 A CN 102098841A
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Abstract
The invention provides a railway light-emitting diode (LED) signal lamp lightening control circuit and a railway light-emitting diode (LED) signal lamp lightening control method. The circuit comprises a micro-processing controller, a dual-LED signal lamp, a field effect tube Q1, a field effect tube Q2 and six resistors, wherein the micro-processing controller controls the two LED lamps of the dual-LED signal lamp to be lightened alternately by the field effect tube Q1 and field effect tube Q2. The method comprises the following steps that: the micro-processing controller U1 transmits a first switch pulse and a second switch pulse to the grids of the field effect tube Q1 and the field effect tube Q2 respectively by the first switch pulse output end and the second switch pulse output end to control the two LED lamps of the dual-LED signal lamp DL1 to be lightened alternately. The lightening control circuit fully makes use of the characteristics of the LED lamp, so that the two groups of the LED lamps are fully used, and the service life of the LED signal lamp is greatly prolonged. The lightening control method has the advantages of simple operation, strong practicability and high reliability.
Description
Technical field
The present invention relates to a kind of signal lamp starting controlling circuit, specifically, relate to a kind of railway LED signal lamp starting controlling circuit and lighting control method thereof.
Background technology
Because the LED lamp has the outstanding advantage of long service life than incandescent lamp, therefore, just progressively original incandescent lamp is replaced by the LED lamp on the railway; For the purpose of reliable, the incandescent lamp that uses on the railway all is that two filaments are encapsulated in the bulb, forms so-called major-minor filament, swings to auxiliary filament after main filament blows immediately, works on guaranteeing, in order to avoid influence the train traffic safety; Existing LED signal lamp is still copied the notion of incandescent lamp major-minor filament, be that the LED signal lamp comprises major-minor LED lamp, during normal the use, allow main LED lamp light, in case main LED lamp failure, swing to secondary LED lamp immediately so that work on, still, swing to secondary LED lamp behind the main LED lamp failure and work on, the not backup of secondary LED lamp this moment, therefore, in a single day railway interests finds main LED lamp failure for the sake of security often, just immediately the whole LED lamp holder is changed, at this moment, how long secondary LED lamp does not work, and therefore causes bigger waste.
In order to solve the problem of above-mentioned existence, people are seeking a kind of desirable technical solution always.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, thereby a kind of design science is provided, can prolongs the LED signal lamp railway LED signal lamp starting controlling circuit in useful life greatly, a kind of simple to operate, practical, railway LED signal lamp lighting control method that reliability is high also is provided.
The objective of the invention is to realize by following technical scheme: a kind of railway LED signal lamp starting controlling circuit, it comprises microprocessor controller U1, two LED signal lamp DL1, field effect transistor Q1, field effect transistor Q2, resistance R 1, resistance R 2, resistance R 3 and resistance R 4; Wherein, the negative terminal of the LED lamp of described couple of LED signal lamp DL1 connects the drain electrode of described field effect transistor Q1, the grid of described field effect transistor Q1 connects described resistance R 1 one ends and described resistance R 2 one ends respectively, described resistance R 2 other end ground connection, described resistance R 1 other end connects the first switching pulse output of described microprocessor controller U1; The negative terminal of another LED lamp of described couple of LED signal lamp DL1 connects the drain electrode of described field effect transistor Q2, the grid of described field effect transistor Q2 connects described resistance R 3 one ends and described resistance R 4 one ends respectively, described resistance R 4 other end ground connection, described resistance R 3 other ends connect the second switch pulse output end of described microprocessor controller U1; The anode of described couple of LED signal lamp DL1 is used to connect LED signal lamp power supply one end, and the source electrode of described field effect transistor Q1 is respectively applied for the source electrode of described field effect transistor Q2 and is connected the LED signal lamp power supply other end.
Based on above-mentioned, this railway LED signal lamp starting controlling circuit also comprises resistance R 5 and resistance R 6, described resistance R 6 one ends connect described resistance R 5 one ends, described resistance R 6 other end ground connection, described resistance R 5 other ends connect the anode of described couple of LED signal lamp DL1, and described resistance R 5 one ends connect the voltage detecting end of described microprocessor controller U1.
A kind of railway LED signal lamp lighting control method, this method is: described microprocessor controller U1 sends first switching pulse and second switch pulse to the grid of described field effect transistor Q1 and the grid of described field effect transistor Q2 respectively by the first switching pulse output and second switch pulse output end, alternately lights with two LED lamps controlling described couple of LED signal lamp DL1.
Based on above-mentioned, when two LED lamps of described couple of LED signal lamp DL1 of described microprocessor controller U1 control were alternately lighted, described microprocessor controller U1 constantly detected the voltage status of described pair of LED signal lamp DL1 anode by the voltage detecting end; Described first switching pulse is the paired pulses that waveform is opposite, wavelength is identical with described second switch pulse.
The present invention has outstanding substantive distinguishing features and marked improvement with respect to prior art, specifically, this railway LED signal lamp starting controlling circuit has made full use of the characteristics of LED lamp, adopting microprocessor controller and two groups of field effect transistor to control two groups of LED lamps alternately lights, two groups of LED lamps are used fully, prolonged the useful life of LED signal lamp greatly; This railway LED signal lamp lighting control method has advantage simple to operate, practical, that reliability is high.
Description of drawings
Fig. 1 is an electrical block diagram of the present invention;
Fig. 2 is the oscillogram of described first switching pulse and described second switch pulse.
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail:
As shown in Figure 1, a kind of railway LED signal lamp starting controlling circuit, it comprises microprocessor controller U1, two LED signal lamp DL1, field effect transistor Q1, field effect transistor Q2, resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5 and resistance R 6; Wherein, described resistance R 6 one ends connect described resistance R 5 one ends, described resistance R 6 other end ground connection, and described resistance R 5 other ends connect the anode of described couple of LED signal lamp DL1, and described resistance R 5 one ends connect the voltage detecting end of described microprocessor controller U1; The negative terminal of the LED lamp of described couple of LED signal lamp DL1 connects the drain electrode of described field effect transistor Q1, the grid of described field effect transistor Q1 connects described resistance R 1 one ends and described resistance R 2 one ends respectively, described resistance R 2 other end ground connection, described resistance R 1 other end connects the first switching pulse output of described microprocessor controller U1; The negative terminal of another LED lamp of described couple of LED signal lamp DL1 connects the drain electrode of described field effect transistor Q2, the grid of described field effect transistor Q2 connects described resistance R 3 one ends and described resistance R 4 one ends respectively, described resistance R 4 other end ground connection, described resistance R 3 other ends connect the second switch pulse output end of described microprocessor controller U1; The anode of described couple of LED signal lamp DL1 is used to connect LED signal lamp power supply one end, and the source electrode of described field effect transistor Q1 is respectively applied for the source electrode of described field effect transistor Q2 and is connected the LED signal lamp power supply other end.
A kind of railway LED signal lamp lighting control method, this method is: described microprocessor controller U1 sends first switching pulse and second switch pulse to the grid of described field effect transistor Q1 and the grid of described field effect transistor Q2 respectively by the first switching pulse output and second switch pulse output end, alternately lights with two LED lamps controlling described couple of LED signal lamp DL1; Simultaneously, described microprocessor controller U1 constantly detects the voltage status of described pair of LED signal lamp DL1 anode by the voltage detecting end.
Based on above-mentioned, described first switching pulse and described second switch pulse are waveforms as shown in Figure 2, grid A, the B point of two field effect transistor adds respectively as two switching waveforms of A, B among Fig. 2, high level is lighted, make two groups of LED lamps alternately light, that is to say at the whole LED lamp and light duration of work, the electric current time of lighting of passing through of every group of LED lamp is no more than 50%, so the working life of integral LED signal lamp should be two groups of LED life-span sums at least; In fact, every group of LED lamp lighted the time slightly less than 50%, so can be single more than 2 times of LED lamp life-span of group the actual life of LED signal lamp, for example: the life-span of general LED lamp is 50,000 hours, utilizes this method that the life-span of LED was reached more than 100,000 hours;
In other embodiments, described first switching pulse is the paired pulses that waveform is opposite, wavelength is identical with described second switch pulse; Like this, two groups of LED lamp times of alternately lighting respectively account for 50%.
The present invention has utilized two characteristics of LED lamp: one is because the LED lamp is a semiconductor light emitting, thus can add higher switching frequency, and its life-span is had no effect; Another is when switching frequency is higher than 100HZ, and human eye is the flicker of imperceptible light; Two characteristics of this of the ingenious LED of the utilization lamp of the present invention and design this circuit are to reach the purpose that prolongs the LED signal lamp life-span.
Should be noted that at last: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit; Although with reference to preferred embodiment the present invention is had been described in detail, those of ordinary skill in the field are to be understood that: still can make amendment or the part technical characterictic is equal to replacement the specific embodiment of the present invention; And not breaking away from the spirit of technical solution of the present invention, it all should be encompassed in the middle of the technical scheme scope that the present invention asks for protection.
Claims (5)
1. railway LED signal lamp starting controlling circuit, it is characterized in that: this railway LED signal lamp starting controlling circuit comprises microprocessor controller U1, two LED signal lamp DL1, field effect transistor Q1, field effect transistor Q2, resistance R 1, resistance R 2, resistance R 3 and resistance R 4; Wherein, the negative terminal of the LED lamp of described couple of LED signal lamp DL1 connects the drain electrode of described field effect transistor Q1, the grid of described field effect transistor Q1 connects described resistance R 1 one ends and described resistance R 2 one ends respectively, described resistance R 2 other end ground connection, described resistance R 1 other end connects the first switching pulse output of described microprocessor controller U1; The negative terminal of another LED lamp of described couple of LED signal lamp DL1 connects the drain electrode of described field effect transistor Q2, the grid of described field effect transistor Q2 connects described resistance R 3 one ends and described resistance R 4 one ends respectively, described resistance R 4 other end ground connection, described resistance R 3 other ends connect the second switch pulse output end of described microprocessor controller U1; The anode of described couple of LED signal lamp DL1 is used to connect LED signal lamp power supply one end, and the source electrode of described field effect transistor Q1 is respectively applied for the source electrode of described field effect transistor Q2 and is connected the LED signal lamp power supply other end.
2. railway LED signal lamp starting controlling circuit according to claim 1, it is characterized in that: this railway LED signal lamp starting controlling circuit also comprises resistance R 5 and resistance R 6, described resistance R 6 one ends connect described resistance R 5 one ends, described resistance R 6 other end ground connection, described resistance R 5 other ends connect the anode of described couple of LED signal lamp DL1, and described resistance R 5 one ends connect the voltage detecting end of described microprocessor controller U1.
3. the lighting control method of claim 1 or 2 described railway LED signal lamp starting controlling circuits, it is characterized in that: described microprocessor controller U1 sends first switching pulse and second switch pulse to the grid of described field effect transistor Q1 and the grid of described field effect transistor Q2 respectively by the first switching pulse output and second switch pulse output end, alternately lights with two LED lamps controlling described couple of LED signal lamp DL1.
4. the lighting control method of railway LED signal lamp starting controlling circuit according to claim 3, it is characterized in that: when two LED lamps of described couple of LED signal lamp DL1 of described microprocessor controller U1 control were alternately lighted, described microprocessor controller U1 constantly detected the voltage status of described pair of LED signal lamp DL1 anode by the voltage detecting end.
5. the lighting control method of railway LED signal lamp starting controlling circuit according to claim 3 is characterized in that: described first switching pulse is the paired pulses that waveform is opposite, wavelength is identical with described second switch pulse.
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| CN2011100007914A CN102098841A (en) | 2011-01-05 | 2011-01-05 | Railway light-emitting diode (LED) signal lamp lightening control circuit and railway light-emitting diode (LED) signal lamp lightening control method |
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| CN2011100007914A CN102098841A (en) | 2011-01-05 | 2011-01-05 | Railway light-emitting diode (LED) signal lamp lightening control circuit and railway light-emitting diode (LED) signal lamp lightening control method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104464327A (en) * | 2014-12-17 | 2015-03-25 | 南京莱斯信息技术股份有限公司 | Communication type AC voltage regulating device and signal lamp brightness regulating method thereof |
| CN105282919A (en) * | 2014-06-19 | 2016-01-27 | 恩智浦有限公司 | Circuit and lighting unit for dimmable lighting applications |
| CN110910666A (en) * | 2019-12-03 | 2020-03-24 | 上海应用技术大学 | Railway signal lamp |
| CN111812440A (en) * | 2020-07-20 | 2020-10-23 | 哈尔滨市科佳通用机电股份有限公司 | Automatic detection system for locomotive annunciator |
| WO2021218475A1 (en) * | 2020-04-28 | 2021-11-04 | 厦门荣汇源科技有限公司 | Railway signal lamp and lighting monitoring and controlling device thereof |
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| CN201215298Y (en) * | 2008-05-19 | 2009-04-01 | 士商（上海）机械有限公司 | LED work light with electric energy manager |
| CN101718408A (en) * | 2009-10-30 | 2010-06-02 | 海洋王照明科技股份有限公司 | Airport pavement warning device |
| CN201910960U (en) * | 2011-01-05 | 2011-07-27 | 张荣博 | Illumination control circuit for railway LED (light-emitting diode) signal light |
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2011
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201215298Y (en) * | 2008-05-19 | 2009-04-01 | 士商（上海）机械有限公司 | LED work light with electric energy manager |
| CN101718408A (en) * | 2009-10-30 | 2010-06-02 | 海洋王照明科技股份有限公司 | Airport pavement warning device |
| CN201910960U (en) * | 2011-01-05 | 2011-07-27 | 张荣博 | Illumination control circuit for railway LED (light-emitting diode) signal light |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105282919A (en) * | 2014-06-19 | 2016-01-27 | 恩智浦有限公司 | Circuit and lighting unit for dimmable lighting applications |
| CN104464327A (en) * | 2014-12-17 | 2015-03-25 | 南京莱斯信息技术股份有限公司 | Communication type AC voltage regulating device and signal lamp brightness regulating method thereof |
| CN110910666A (en) * | 2019-12-03 | 2020-03-24 | 上海应用技术大学 | Railway signal lamp |
| WO2021218475A1 (en) * | 2020-04-28 | 2021-11-04 | 厦门荣汇源科技有限公司 | Railway signal lamp and lighting monitoring and controlling device thereof |
| CN111812440A (en) * | 2020-07-20 | 2020-10-23 | 哈尔滨市科佳通用机电股份有限公司 | Automatic detection system for locomotive annunciator |
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Application publication date: 20110615 |