CN102448234A - Method and device for intelligently controlling high-power LED railway signal lamp - Google Patents

Method and device for intelligently controlling high-power LED railway signal lamp Download PDF

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Publication number
CN102448234A
CN102448234A CN2011103100879A CN201110310087A CN102448234A CN 102448234 A CN102448234 A CN 102448234A CN 2011103100879 A CN2011103100879 A CN 2011103100879A CN 201110310087 A CN201110310087 A CN 201110310087A CN 102448234 A CN102448234 A CN 102448234A
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China
Prior art keywords
led
circuit
power
signal
microcontroller
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Pending
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CN2011103100879A
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Chinese (zh)
Inventor
马泽龙
曲云鹏
张宇
张睿鹏
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CHANGCHUN EAST RAIL COMMUNICATIONS SIGNAL EQUIPMENT Co Ltd
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CHANGCHUN EAST RAIL COMMUNICATIONS SIGNAL EQUIPMENT Co Ltd
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Priority to CN2011103100879A priority Critical patent/CN102448234A/en
Publication of CN102448234A publication Critical patent/CN102448234A/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/40Control techniques providing energy savings, e.g. smart controller or presence detection

Abstract

The invention discloses a method and device for intelligently controlling a high-power LED railway signal lamp. A power circuit is used for respectively providing a power supply for a microcontroller, an LED power supply control circuit and a failure warning circuit; an I/O (Input/Output) port of the microcontroller and the LED power supply control circuit are connected and used for respectively supplying a power supply for multiple groups of LED signal lamp intelligent control units which are connected in parallel, a standard PWM (Pulse Width Modulation) signal generated by a PWM module of the microcontroller is transmitted to an LED drive circuit through another I/O port so as to lighten LED signal lamps; and a sampling circuit is used for converting a current signal in the LED drive circuit into a voltage signal and feeding the voltage signal to the microcontroller through an A/D (Analog/Digital) conversion module so as to regulate the duty ratio of the PWM signal and stabilize the working current in the LED signal lamps. According to the invention, the microcontroller and the A/D conversion module are used for finishing a technology of detecting luminotrons one by one, and the problems of inaccurate warning sampling, poorer output property of circuits, caused by change of the working circuit, and the like are solved.

Description

A kind of method of intelligent control high power LED railway signal lamp and device
Technical field
The present invention discloses a kind of method of intelligent control high power LED railway signal lamp, and the device of realizing this control method also is provided simultaneously, is applicable to signal lamp Display Techniques such as railway, navigation, aviation and road traffic, belongs to signal lamp light source intelligence controlling device.
Background technology
At present, the railway scene mainly adopts the mariages incandescent lamp as signal optical source with signal lamp.Adopt the mariages incandescent lamp as the signal lamp of light source in use exist power consumption big, be prone to heating, the life-span is short and prolongs problem such as light intensity attenuation with the operating time, increased electric affair segment signal work area operating personnel's maintenance of equipment work amount.LED possesses stable performance, advantage such as energy-conservation; All have at present abroad and produce and use the instance of LED as railway on-site signal lamp source, but for great power LED railway signal lamp Based Intelligent Control aspect exist report to the police sampling inadequately accurately, operating current changes a series of security hidden troubles that cause in circuit output characteristic variation and the utilization.
Summary of the invention
The invention provides a kind of method of intelligent control high power LED railway signal lamp; Use several great power LED Parallel Control modes, overcome the incandescent lamp power consumption and reached the problem that low-power diode series connection other luminous tube of luminous tube fault that control mode caused also lost efficacy thereupon greatly.
The invention provides the device of realizing above-mentioned control method, solved existing warning sampling inadequately accurately, operating current changes problems such as causing circuit output characteristic variation.
The method of intelligent control high power LED railway signal lamp of the present invention may further comprise the steps:
Be respectively microcontroller, LED power-supplying circuit and failure alarm circuit by power circuit power supply is provided; Micro controller I/O mouth is connected to parallelly connected array LED signal lamp intelligent control unit with the LED power-supplying circuit power supply is provided respectively; Described LED signal lamp intelligent control unit is made up of LED signal lamp, sample circuit and led drive circuit, comprises N LED lamp in the LED tally circuit; The pwm signal of the PWM module generation standard of microcontroller sends to led drive circuit through another I/O mouth and lights the LED signal lamp; Sample circuit converts current signal in the led drive circuit to voltage signal and feeds back to microcontroller through the A/D modular converter, with the duty ratio of adjustment pwm signal, stablizes the operating current in the LED signal lamp;
When the LED signal lamp broke down, sample circuit fed back to microcontroller with the current signal of fault in the led drive circuit, reported to the police through the microprocessor controls failure alarm circuit;
When the LED lamp failure quantity in the LED signal lamp reached certain value, microprocessor controls LED power-supplying circuit cut off the power supply of LED signal lamp and led drive circuit;
Simultaneously lamp bit-encoded information that prestores and alarm code are sent it back the signaling at stations Machine Room.
Realize the control device of above-mentioned method, it is characterized in that:
Comprise power circuit, microcontroller, LED power-supplying circuit, failure alarm circuit, signaling at stations Machine Room and array LED signal lamp intelligent control unit; Described LED signal lamp intelligent control unit is made up of LED signal lamp, sample circuit and led drive circuit, comprises N LED lamp in the LED tally circuit; Wherein,
An I/O mouth of microcontroller links to each other with the LED power-supplying circuit, and another I/O mouth links to each other with failure alarm circuit; The PWM module of microcontroller links to each other with the LED intelligence control circuit, and the A/D module links to each other with sample circuit; The LED power-supplying circuit links to each other with led drive circuit and LED signal lamp, comprises N LED lamp in the LED tally circuit; Sample circuit links to each other with led drive circuit.
Open power supply, give microcontroller, LED power supply control, failure alarm circuit power supply; By the relay adhesive in micro controller I/O mouth control LED power-supplying circuit, produce the pwm signal of standard simultaneously by the PWM module of microcontroller, send to led drive circuit through micro controller I/O mouth, light the LED signal lamp; And become magnitude of voltage to feed back to microcontroller the current conversion that flows through among the LED through the A/D modular converter by sample circuit, with the duty ratio of adjustment pwm signal, stablize the operating current among the LED; When the LED lamp breaks down (like short circuit, open circuit etc.), through the adhesive of I/O mouth control fault warning circuit relay, lamp bit-encoded information that prestores and alarm code are sent it back the signaling at stations Machine Room by microcontroller; When the LED lamp failure quantity in the LED signal lamp reaches certain value; Microprocessor controls LED power-supplying circuit cuts off the power supply of LED, and the relay adhesive in the control fault warning circuit simultaneously sends it back the signaling at stations Machine Room with malfunction coding that prestores and lamp bit-encoded information.
The good effect of invention is: use microprocessor and analog to digital converter to accomplish luminous tube detection technique one by one; Solving reports to the police takes a sample inadequately accurately, operating current changes problems such as causing circuit output characteristic variation; Compare with analog circuit control great power LED railway signal lamp control device with early stage, the present invention has that volume is little, price is low, speed is fast, antijamming capability is strong, intelligent degree high and has advantage such as diversified expansibility.
Preferably resolve a series of security hidden troubles in the utilization of railway signal LED signal display power supply control device.
Description of drawings
Fig. 1 schematic block circuit diagram of the present invention;
Fig. 2 circuit theory diagrams of the present invention.
Embodiment
Embodiment 1
According to shown in Figure 1, be respectively microcontroller 2, LED power-supplying circuit 3 and failure alarm circuit 7 by power circuit 1 power supply is provided; The I/O mouth of microcontroller 2 is connected to parallelly connected array LED signal lamp intelligent control unit with LED power-supplying circuit 3 power supply is provided respectively; Described LED signal lamp intelligent control unit is made up of LED signal lamp 6, sample circuit 5 and led drive circuit 4, and each intelligent control high power LED railway signal lamp all comprises N group LED signal lamp intelligent control unit; The pwm signal of the PWM module generation standard of microcontroller 2 sends to led drive circuit 4 through another I/O mouth and lights LED signal 6 lamps, comprises N LED lamp in LED signal lamp 6 circuit; Sample circuit 5 converts current signal in the led drive circuit 4 to voltage signal and feeds back to microcontroller 2 through the A/D modular converter, with the duty ratio of adjustment pwm signal, stablizes the operating current in the LED signal lamp 6;
When LED signal lamp 6 broke down, sample circuit 5 fed back to microcontroller 2 with the current signal of fault in the led drive circuit 4, reported to the police through microcontroller 2 control fault warning circuits 7;
When the LED lamp failure quantity in the LED signal lamp reached certain value, microprocessor controls LED power-supplying circuit cut off the power supply of LED signal lamp 6 and led drive circuit 4;
Simultaneously lamp bit-encoded information that prestores and alarm code are sent it back signaling at stations Machine Room 8.
Embodiment 2
With reference to shown in Figure 1; Intelligent control high power LED railway signal lamp device of the present invention is made up of power circuit 1, microcontroller 2, LED power-supplying circuit 3, failure alarm circuit 7, signaling at stations Machine Room 8 and array LED signal lamp intelligent control unit; Described LED signal lamp intelligent control unit is made up of LED signal lamp 6, sample circuit 5 and led drive circuit 4, comprises N LED lamp in LED signal lamp 6 circuit; Wherein,
According to shown in Figure 2; Power circuit 1 output+5V gives microcontroller 2VDD confession; At first through 3 work of I/O mouth control LED power-supplying circuit, general+12V voltage was exported to LED signal lamp 6 and led drive circuit 4 after microcontroller 2 (adopting the C8051F410 high speed microprocessor) powered on; LED signal lamp 6 is made up of N LED lamp; Pull-up resistor R11 is connected on triode T1 collector electrode in the led drive circuit 4; Sample resistance R12 is connected on the source electrode of FET M1; Filter capacitor C1 is parallelly connected with sample resistance R12; Sampling voltage is sent the A/D modular converter of microcontroller 2 back to, and microcontroller 2 sends the base stage of PWM (pulse-width modulation) signal to triode T1 through the PWM module, with the switching time of control triode T1; The grid of FET M1 links to each other with the collector electrode of triode T1; Switching characteristic according to triode; When triode T1 base stage received pwm signal, the grid of FET M1 also can receive the opposite pwm signal of duty ratio, because the switching characteristic of FET; The duty ratio that duty ratio and the microcontroller 2 that flows through electric current in the LED signal lamp 6 produces pwm signals is opposite, the LED lamp operate as normal in this moment LED signal lamp 6;
When the electric current of LED lamp changes for some reason arbitrarily in the LED signal lamp 6; The A/D modular converter of microcontroller 2 is converted into magnitude of voltage VA through sample resistance (R12) with the working current value in each LED lamp; And feed back to microcontroller 2, compare with the standard value VB that sets:
As the electric current I A in the LED lamp>during IB (IB is a standard value preset in the microcontroller 2); Be sampling voltage VA>VB; The duty of the pwm signal of microcontroller 2 through turning down output recently reduces the electric current I A that flows through in the LED lamp; Otherwise then heighten the duty ratio of output pwm signal, be in stable status so that the LED lamp is operated in electric current I A;
When the LED lamp in LED signal lamp 6 circuit breaks down (as open circuit, short circuit) when causing that the magnitude of voltage of sample circuit 5 exceeds limit value; Microprocessor 2 is put height with triode T1 base stage level; Control FET M1 ends, with excessive led drive circuit 4 and the sample circuit 5 of burning of the electric current that prevents to flow through in the circuit;
If have >=when a N/4 LED lamp broke down, microcontroller 2 sent it back the signaling at stations Machine Room through the relay adhesive in the I/O mouth control fault warning circuit 7 with alarm code that prestores and lamp bit-encoded information; As >=when a N/2 LED lamp breaks down; Microcontroller 2 control fault warning circuits 7 send it back the signaling at stations Machine Room with failure code that prestores and lamp bit-encoded information; Control the relay disconnection of LED power-supplying circuit 3 simultaneously through the I/O mouth of microcontroller 2; Cutting off the power supply of LED signal lamp 6, to prevent the burning The whole control device owing to electric current is excessive.
What microcontroller 2 was selected for use is the C8051F410 high speed microprocessor.C8051F410 belongs to the small micro controller that Silicon Labs produces; Integrated 8051 CPU, Flash memory, PWM module and high-performance A/D modular converter at a high speed in minimum encapsulation; When improving systematic function, reduced the number of the required element of circuit;
Light source is the LED lamp that N power is 1W in the LED signal lamp 6;
Led drive circuit 3 is the power amplification circuit that triode and MOSFET form, and triode is 2N2222, and MOSFET is IRF540;
Executive component in LED power-supplying circuit 4 warning circuits 8 is a G6A-274P-12VDC type relay;
The present invention provides three kinds of designs to the great power LED signal lamp demonstration of every profession and trade signal indication technology and unlike signal deixis:
(1) N=8 is that 8 power of 8 point focusing are 1WLED signal lamp display optical system;
(2) N=6 is that 6 power of 6 point focusing are 1WLED signal lamp display optical system;
(3) N=4 is that 4 power of 4 point focusing are 1WLED signal lamp display optical system.
Prove through result of the test; The present invention has that electrical characteristics are stable, strong interference immunity, signal display effect satisfy the required technical indicator of part industry; Fault alarm function improves reliable, and operational environment is not limited by height above sea level and circumstance of temperature difference, has extensive market prospects.

Claims (2)

1. the method for an intelligent control high power LED railway signal lamp may further comprise the steps:
Be respectively microcontroller, LED power-supplying circuit and failure alarm circuit by power circuit power supply is provided; Micro controller I/O mouth is connected to parallelly connected array LED signal lamp intelligent control unit with the LED power-supplying circuit power supply is provided respectively; Described LED signal lamp intelligent control unit is made up of LED signal lamp, sample circuit and led drive circuit, and each intelligent control high power LED railway signal lamp all comprises N group LED signal lamp intelligent control unit; The pwm signal of the PWM module generation standard of microcontroller sends to led drive circuit through another I/O mouth and lights the LED signal lamp, comprises N LED lamp in the LED tally circuit; Sample circuit converts current signal in the led drive circuit to voltage signal and feeds back to microcontroller through the A/D modular converter, with the duty ratio of adjustment pwm signal, stablizes the operating current in the LED signal lamp;
When the LED signal lamp broke down, sample circuit fed back to microcontroller with the current signal of fault in the led drive circuit, reported to the police through the microprocessor controls failure alarm circuit;
When the LED lamp failure quantity in the LED signal lamp reached certain value, microprocessor controls LED power-supplying circuit cut off the power supply of LED signal lamp and led drive circuit;
Simultaneously lamp bit-encoded information that prestores and alarm code are sent it back the signaling at stations Machine Room.
2. realize the device of the said great power LED railway signal lamp of claim 1 intelligence control method, it is characterized in that:
Power circuit+the 5V output links to each other with the power port VDD of microcontroller, power circuit+power supply that links to each other with LED power-supplying circuit and failure alarm circuit of 12V output; An I/O mouth of microcontroller links to each other with the LED power-supplying circuit and is respectively the power supply of LED signal lamp and led drive circuit, the control fault warning circuit warning that links to each other with failure alarm circuit of another I/O mouth; The PWM module of microcontroller links to each other with the LED intelligence control circuit, the pwm signal that produces standard is sent to led drive circuit through micro controller I/O mouth light the LED signal lamp; The A/D module of microcontroller links to each other with sample circuit and converts current signal in the led drive circuit to magnitude of voltage and feed back to microcontroller through the A/D modular converter; The LED power-supplying circuit links to each other with led drive circuit and LED signal lamp and is respectively it power supply is provided; Comprise N LED lamp in the LED tally circuit; Sample circuit links to each other with led drive circuit and converts the current signal in the led drive circuit to voltage signal.
?
CN2011103100879A 2011-10-13 2011-10-13 Method and device for intelligently controlling high-power LED railway signal lamp Pending CN102448234A (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN2011103100879A CN102448234A (en) 2011-10-13 2011-10-13 Method and device for intelligently controlling high-power LED railway signal lamp

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107031682A (en) * 2017-04-13 2017-08-11 北京思诺信安科技有限公司 Cab signal power module
CN107054408A (en) * 2017-04-13 2017-08-18 北京交大思诺科技股份有限公司 cab signal system
CN109229148A (en) * 2018-08-29 2019-01-18 交控科技股份有限公司 A kind of rail traffic annunciator system, semaphore and train
CN110133541A (en) * 2019-04-30 2019-08-16 武汉微创光电股份有限公司 A kind of light compensating lamp fault detection method and device
US10919549B2 (en) 2018-09-05 2021-02-16 Protran Technology, Llc Lantern and multi-functional LED light for railways

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CN101640956A (en) * 2009-03-18 2010-02-03 河海大学常州校区 Design method of intelligent power supply electronic converter of general-type railway signal lamp
CN102045919A (en) * 2010-08-25 2011-05-04 李志明 LED light source self-diagnosis protection system
CN201854488U (en) * 2010-11-29 2011-06-01 河南光彩电器有限公司 Naval signal light controller
CN202261981U (en) * 2011-10-13 2012-05-30 长春东铁通信信号设备有限公司 Large power LED railway signal lamp intelligent controller

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201023492Y (en) * 2006-08-23 2008-02-20 张义政 Multipurpose intelligence railway signal lighting system
CN101640956A (en) * 2009-03-18 2010-02-03 河海大学常州校区 Design method of intelligent power supply electronic converter of general-type railway signal lamp
CN102045919A (en) * 2010-08-25 2011-05-04 李志明 LED light source self-diagnosis protection system
CN201854488U (en) * 2010-11-29 2011-06-01 河南光彩电器有限公司 Naval signal light controller
CN202261981U (en) * 2011-10-13 2012-05-30 长春东铁通信信号设备有限公司 Large power LED railway signal lamp intelligent controller

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107031682A (en) * 2017-04-13 2017-08-11 北京思诺信安科技有限公司 Cab signal power module
CN107054408A (en) * 2017-04-13 2017-08-18 北京交大思诺科技股份有限公司 cab signal system
CN107031682B (en) * 2017-04-13 2018-11-09 北京思诺信安科技有限公司 Cab signal power module
CN107054408B (en) * 2017-04-13 2018-11-09 北京交大思诺科技股份有限公司 Cab signal system
CN109229148A (en) * 2018-08-29 2019-01-18 交控科技股份有限公司 A kind of rail traffic annunciator system, semaphore and train
US10919549B2 (en) 2018-09-05 2021-02-16 Protran Technology, Llc Lantern and multi-functional LED light for railways
CN110133541A (en) * 2019-04-30 2019-08-16 武汉微创光电股份有限公司 A kind of light compensating lamp fault detection method and device
CN110133541B (en) * 2019-04-30 2021-03-23 武汉微创光电股份有限公司 Fault detection method and device for light supplement lamp

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