CN103945613A

CN103945613A - Locomotive headlamp illumination and flickering control device

Info

Publication number: CN103945613A
Application number: CN201410169200.XA
Authority: CN
Inventors: 陈平; 葛永琪; 李云峰
Original assignee: CHANGZHOU QISHUYAN ROLLING STOCK PART INDUSTRIAL Co Ltd
Current assignee: CHANGZHOU QISHUYAN ROLLING STOCK PART INDUSTRIAL Co Ltd
Priority date: 2014-04-24
Filing date: 2014-04-24
Publication date: 2014-07-23
Anticipated expiration: 2034-04-24
Also published as: CN103945613B

Abstract

The invention provides a locomotive headlamp illumination and flickering control device which comprises an anti-interference EMI filtration module which is resistant to power supply reverse connection, high voltage and electromagnetic interference, a power module used for providing a DC12V working power supply, an LLC conversion module used for converting the DC110V power supply of a locomotive into a stable and reliable output type DC24V power supply, an overload and short-circuit protection module used for preventing overload and short circuits during working, an over-voltage and over-temperature protection module used for preventing over-voltage and over-temperature during working, and a flickering control module used for controlling the flickering of a headlamp of the locomotive. The device is low in weight, small in size, high in switch working frequency, and low in output loss, the conversion efficiency of electric energy of the power supply is high and can reach 91%-96%, stable illumination and flicking signal output of the headlamp of the locomotive can be effectively guaranteed, and working stability and reliability are high.

Description

Headlight of railroad locomotive illumination and flash of light control device

Technical field

The present invention relates to locomotive illumination and the whistle control system of railway and rail vehicle, be specifically related to a kind of headlight of railroad locomotive illumination and flash of light control device that signal is provided by light under situation state is blown a whistle in train restriction.

Background technology

It is a kind of contact operating type of trainman and field personnel that train is blown a whistle always.Such as, when train soon enters the station, driver connects car preparation in order to allow station staff carry out, and just to blow a whistle, informs you.In the railway system, nearly tens kinds of the gainers that locomotive need to be blown a whistle, as launch train, enter the station, locomotive retreats, trailer, discrepancy engineering (turning back) section, instation shunting, require signal to show, by road junction and bridge, discovery, jeopardize the situations such as traffic safety and personal safety, all needs the warning of blowing a whistle.But blowing a whistle, locomotive can affect under many circumstances the particularly normal life of densely populated Residents of Along Railway.For overcoming this problem, the 2005 Nian Yuan Ministry of Railways require each Railway Bureau to change traditional contact operating type of blowing a whistle, adopt the contact operating types such as light warning technology to replace blowing a whistle, on locomotive, install " locomotive limit ring device " additional, former mode of blowing a whistle sound transmission signal is changed into by the left and right headlamp flash of light transmission of information on locomotive, to reduce the noise pollution of Along Railway resident living environment.

For head it off, current train locomotive generally adopts the control device based on pulse-width modulation (PWM) principle to be used for controlling the glittering of locomotive headlamp and flash of light, its weak point has at least: the one, and the control device based on PWM is under the general DC110V low pressure of train, while requiring its output DC24V operating voltage and 8.5A operating current, its conversion efficiency only can reach 80%-84%, and energy conversion efficiency is lower; The 2nd, the control device based on PWM need to arrange fan and carry out forced cooling, causes to control and puts volume increase, and power consumption increases, and working stability performance is relatively limited; The 3rd, can produce more harmonic wave, other equipment of locomotive are caused to unnecessary electromagnetic interference; The 4th, common volume and weight is heavier, and power output is also easily limited.

Summary of the invention

The object of the invention is: adapt to the requirement that train restriction is blown a whistle, overcome the deficiencies in the prior art, provide that a kind of volume is little, lightweight, when work energy conversion efficiency high, output loss is little, with locomotive on other installation electromagneticals compatible good and can effectively guarantee headlight of railroad locomotive illumination and the flash of light control device that locomotive headlamp steady illumination and flashing light output require.

Technical scheme of the present invention is: headlight of railroad locomotive illumination of the present invention and flash of light control device, and its design feature is: comprise anti-interference EMI filtration module, power module, LLC modular converter, overload short circuit protection module, overvoltage overheat protector module and flash of light control module;

Above-mentioned anti-interference EMI filtration module is provided with first, second, and third power input and first, second power output end; Power module is provided with first, second power input and power output end; LLC modular converter is provided with the first power input, second source input, the first power output end, second source output, overvoltage overheat protector signal input part and overload short circuit guard signal input; Overvoltage overheat protector module and overload short circuit protection module are respectively equipped with first to fourth power input and guard signal output; Flash of light control module is provided with the first power input, second source input, the first control output end and the second control output end;

The first power input of power module and the first power input of LLC modular converter are electrically connected to the first power output end of anti-interference EMI filtration module respectively; The 4th power input of the second source input of power module, the second source input of LLC modular converter, overvoltage overheat protector module and the 4th power input of overload short circuit protection module are electrically connected to the second source output of anti-interference EMI filtration module respectively; The 3rd power input of anti-interference EMI filtration module, the first power input of overvoltage overheat protector module and the first power input of overload short circuit protection module are electrically connected to the power output end of power module respectively; The first power input of the second source input of overvoltage overheat protector module, the second source input of overload short circuit protection module and flash of light control module is electrically connected to the first power output end of LLC modular converter respectively; The second source input of the 3rd power input of overvoltage overheat protector module, the 3rd power input of overload short circuit protection module and flash of light control module is electrically connected to the second source output of LLC modular converter respectively; The overvoltage overheat protector signal input part of LLC modular converter is electrically connected to the guard signal output of overvoltage overheat protector module; The overload short circuit guard signal input of LLC modular converter is electrically connected to the guard signal output of overload short circuit protection module.

Further scheme is: above-mentioned LLC modular converter comprises sampling bleeder circuit, resonator and accessory circuit, switch transformer circuit, current rectifying and wave filtering circuit, voltage stabilizing circuit, current sampling protective circuit and feedback circuit;

Above-mentioned sampling bleeder circuit is provided with the first power end, second source end and power output end; Resonator and accessory circuit thereof are provided with the first to the 3rd power end, first signal input, secondary signal input, feedback signal input, the first current sampling signal input, the second current sampling signal input and voltage signal output end; Switch transformer circuit is provided with the first power end, second source end, the first to the 3rd output and current signal output end; Current rectifying and wave filtering circuit is provided with the first to the 3rd input, the first power output end and second source output; Voltage stabilizing circuit is provided with the first power end, second source end, first signal output and secondary signal output; Current sampling protective circuit is provided with sampled signal input, first signal output, secondary signal output and power end; Feedback circuit is provided with first signal input, secondary signal input, voltage signal output end and power end.

Sampling the first power end resonator of bleeder circuit and the first power end of accessory circuit thereof form a common junction because of conllinear, and this common junction is the first power input of above-mentioned LLC modular converter; The second source end of second source end, resonator and accessory circuit thereof of sampling bleeder circuit is, the second source end of switch transformer circuit, the power end of current sampling protective circuit and the power end of feedback circuit form a common junction because of conllinear, and this common junction is the second source input of above-mentioned LLC modular converter; The first signal input of resonator and accessory circuit thereof and secondary signal input are respectively overvoltage overheat protector signal input part and the overload short circuit guard signal input of above-mentioned LLC modular converter; The first power output end of current rectifying and wave filtering circuit and second source output are the first power output end and the second source output of above-mentioned LLC modular converter.

The 3rd power end of resonator and accessory circuit thereof is electrically connected to the power output end of sampling bleeder circuit; The feedback signal input of resonator and accessory circuit thereof is electrically connected to the voltage signal output end of feedback circuit; The first current sampling signal input of resonator and accessory circuit thereof and the second current sampling signal input respectively with first signal output and the corresponding electrical connection of secondary signal output of current sampling protective circuit; The first signal input of feedback circuit and secondary signal input respectively with first signal output and the corresponding electrical connection of secondary signal output of voltage stabilizing circuit; The first power end of voltage stabilizing circuit and second source end respectively with the first power output end and the corresponding electrical connection of second source output of current rectifying and wave filtering circuit; The first to the 3rd input of current rectifying and wave filtering circuit respectively with the corresponding electrical connection of the first to the 3rd output of switch transformer circuit; The first power end of switch transformer circuit is electrically connected to the voltage signal output end of resonator and accessory circuit thereof; The sampled signal input of current sampling protective circuit is electrically connected to the current signal output end of switch transformer circuit.

Further scheme is: above-mentioned anti-interference EMI filtration module comprises the first protective tube F1, the second protective tube F2, piezo-resistance RV1, field effect transistor 1Q1, electric capacity 1C1, voltage-stabiliser tube 1DZ1, resistance 1R1, resistance 1R2, resistance 1R3, resistance 1R4, common mode EMI filters L1, relay J K1, negative temperature coefficient resister 1RT1, field effect transistor 1Q2, diode 1D1, resistance 1R5, resistance 1R6, resistance 1R7, voltage-stabiliser tube 1DZ2, resistance 1R8, electric capacity 1C2, electrochemical capacitor 1C3 and electrochemical capacitor 1C4, common mode EMI filters L1 has terminals 1 to No. 4, relay J K1 has terminals 1 to No. 5,

One end of the first above-mentioned protective tube F1 is the first power input of above-mentioned anti-interference EMI filtration module; One end of the second protective tube F2 is the second source input of above-mentioned anti-interference EMI filtration module; No. 2 terminals conllinear of one end of one end of the other end of the first protective tube F1 and piezo-resistance RV1, resistance 1R1 and common mode EMI filters L1; Second other end of protective tube F2 is, the drain electrode conllinear of the other end of piezo-resistance RV1 and field effect transistor 1Q1; No. 1 terminals conllinear of one end of the positive pole of one end of the source electrode of field effect transistor 1Q1, electric capacity 1C1, voltage-stabiliser tube 1DZ1, resistance 1R4 and common mode EMI filters L1; One end conllinear of the other end of the negative pole of the other end of the grid of field effect transistor 1Q1, electric capacity 1C1, voltage-stabiliser tube 1DZ1, resistance 1R4 and resistance 1R3; The other end of resistance 1R3 is connected with the other end of resistance 1R1 by resistance 1R2; One end conllinear of No. 4 terminals of common mode EMI filters L1, relay J K1 No. 3 and No. 4 terminals and negative temperature coefficient resister 1RT1; No. 2 terminals of relay J K1, the negative pole of diode 1D1, one end conllinear of one end of resistance 1R5 and resistance 1R6; No. 1 terminals of relay J K1, the positive pole of diode 1D1 and the drain electrode conllinear of field effect transistor 1Q2; One end conllinear of one end of one end of the grid of field effect transistor 1Q2, resistance 1R7, resistance 1R8 and electric capacity 1C2; The other end of resistance 1R7 is electrically connected to the positive pole of voltage-stabiliser tube 1DZ2; The other end of the other end of the negative pole of voltage-stabiliser tube 1DZ2, resistance 1R5 and resistance 1R6 forms a common junction because of conllinear, and this common junction is the 3rd power input of above-mentioned anti-interference EMI filtration module; No. 5 terminals of the other end of negative temperature coefficient resister 1RT1, relay J K1, the positive pole of electrochemical capacitor 1C3 and the positive pole of electrochemical capacitor 1C4 form a common junction because of conllinear, and this common junction is the first power output end of above-mentioned anti-interference EMI filtration module; No. 3 terminals of common mode EMI filters L1, the source electrode of field effect transistor 1Q2, the other end of the other end of resistance 1R8, electric capacity 1C2, the negative pole of the negative pole of electrochemical capacitor 1C3 and electrochemical capacitor 1C4 form a common junction because of conllinear, and this common junction is the second source output of above-mentioned anti-interference EMI filtration module.

Further scheme is: above-mentioned overload short circuit protection module comprises clock chip 2IC1, resistance 2R1, electric capacity 2C1, electric capacity 2C2, diode 2D1, resistance 2R2, electric capacity 2C3, electric capacity 2C4, electric capacity 2C4A, electric capacity 2C5, diode 2D2, diode 2D3, resistance 2R5, resistance 2R6, triode Q6, resistance 2R4, resistance 2R3, triode 2Q1, electrochemical capacitor 2C6, resistance 2R7, photoelectrical coupler 2OP2, resistance 2R8, resistance 2R8A and resistance 2R8B; Above-mentioned clock chip 2IC1 is the integrated chip of NE555 model, and it has pin 1 to No. 8; Photoelectrical coupler 2OP2 is the photoelectrical coupler of PC817 model;

No. 4 of above-mentioned clock chip 2IC1 and No. 8 pin, one end of resistance 2R1, the emitter-base bandgap grading of one end of electric capacity 2C1, triode 2Q1 are, 4 pin of one end of resistance 2R3 and photoelectrical coupler 2OP2 form a common junction because of conllinear, and this common junction is the first power input of above-mentioned overload short circuit protection module; One end conllinear of the other end of resistance 2R1, clock chip 2IC1 No. 7 and No. 6 pin and electric capacity 2C2; No. 2 pin of clock chip 2IC1, the negative pole of diode 2D1, one end conllinear of one end of one end of resistance 2R2, electric capacity 2C1, electric capacity 2C3, electric capacity 2C4 and electric capacity 2C4A; One end conllinear of the negative pole of the negative pole of the positive pole of diode 2D1, diode 2D2, diode 2D3 and resistance 2R5; The positive pole of diode 2D2 is electrically connected to No. 3 pin of clock chip 2IC1; No. 5 pin of clock chip 2IC1 are electrically connected to one end of electric capacity 2C5; The 3 pin conllinear of one end of the positive pole of diode 2D3, resistance 2R7 and photoelectrical coupler 2OP2; The base stage conllinear of one end of the other end of resistance 2R5, resistance 2R6 and triode Q6; The collector electrode of triode Q6 is electrically connected to one end of resistance 2R4; The other end conllinear of the base stage of the other end of resistance 2R4, triode 2Q1 and resistance 2R3; The positive pole of the collector electrode of triode 2Q1 and electrochemical capacitor 2C6 forms a common junction because of conllinear, and this common junction is the guard signal output of above-mentioned overload short circuit protection module; 2 pin of photoelectrical coupler 2OP2 are the 3rd power input of above-mentioned overload short circuit protection module; 2 pin of photoelectrical coupler 2OP2, one end of resistance 2R8, one end of resistance 2R8A and one end conllinear of resistance 2R8B; The other end of the other end of the other end of resistance 2R8, resistance 2R8A and resistance 2R8B forms a common junction because of conllinear, and this common junction is the second source input of above-mentioned overload short circuit protection module; No. 5 pin of the other end of the other end of the other end of the other end of the positive pole of the other end of the other end of electric capacity 2C1, electric capacity 2C2, diode 2D1, resistance 2R2, electric capacity 2C3, electric capacity 2C4, electric capacity 2C4A, clock chip 2IC1, the other end of electric capacity 2C5, the emitter-base bandgap grading of the other end of resistance 2R6, triode Q6, the other end of the other end of electrochemical capacitor 2C6, resistance 2R7 form a common junction because of conllinear, and this common junction is the 4th power input of above-mentioned overload short circuit protection module.

Further scheme is: above-mentioned overvoltage overheat protector module comprises resistance 2R9, resistance 2R10, resistance 2R11, three end adjustable shunt reference voltage source 2U1, electric capacity 2C7, negative tempperature coefficient thermistor RT, resistance 2R12, resistance 2R13, resistance 2R14, electric capacity 2C8, electric capacity 2C9, comparator 2U2A, electric capacity 2C10, resistance 2R19A, diode D13A, diode D13, photoelectrical coupler 2OP3, resistance 2R19, resistance 2R17 and voltage stabilizing didoe 2DZ1; Three above-mentioned end adjustable shunt reference voltage source 2U1 are three end adjustable shunt reference voltage sources of TL431 model; Comparator 2U2A is the integrated chip of LM258 model, and it has pin 1 to No. 8; Photoelectrical coupler 2OP3 is the photoelectrical coupler of PC817 model;

No. 8 pin of one end of above-mentioned resistance 2R9, comparator 2U2A, one end of electric capacity 2C10 and one end of resistance 2R19A form a common junction because of conllinear, and this common junction is the first power input of above-mentioned overvoltage overheat protector module; The negative pole of voltage stabilizing didoe 2DZ1 is the second source input of above-mentioned overvoltage overheat protector module; No. 4 pin of No. 2 pin of photoelectrical coupler 2OP3, comparator 2U2A and one end of electric capacity 2C9 form a common junction because of conllinear, and this common junction is the 3rd power input of above-mentioned overvoltage overheat protector module; The positive pole of the positive pole of diode D13A and diode D13 forms a common junction because of conllinear, and this common junction is the guard signal output of above-mentioned overvoltage overheat protector module; 2 pin of the other end of resistance 2R9, three end adjustable shunt reference voltage source 2U1, one end of resistance 2R10, one end of one end of electric capacity 2C7, resistance 2R13 and one end conllinear of negative tempperature coefficient thermistor RT; The 1 pin conllinear of one end of the other end of resistance 2R10, resistance 2R11 and three end adjustable shunt reference voltage source 2U1; No. 3 pin conllinear of the other end of one end of the other end of negative tempperature coefficient thermistor RT, resistance R 12, electric capacity 2C9 and comparator 2U2A; No. 2 pin conllinear of one end of one end of the other end of resistance 2R13, resistance 2R14, electric capacity 2C8 and comparator 2U2A; No. 1 pin of comparator 2U2A is connected with the positive pole of diode D13A by resistance 2R19A; The positive pole of diode D13 is electrically connected to No. 3 pin of photoelectrical coupler 2OP3; No. 4 pin of photoelectrical coupler 2OP3 are electrically connected to the other end of resistance 2R19; No. 1 pin of photoelectrical coupler 2OP3 is electrically connected to the other end of resistance 2R17; No. 3 pin, the other end of resistance 2R11, the other end of the other end of electric capacity 2C7, resistance 2R12, the other end of the other end of resistance 2R14, electric capacity 2C8 and the other end of electric capacity 2C10 of accurate three-terminal voltage-stabilizing source 2U1 forms a common junction because of conllinear, and this common junction is the 4th power input of the overvoltage overheat protector module of above-mentioned overvoltage overheat protector module.

Further scheme is: above-mentioned flash of light control module comprises diode D1, clock chip U1, field effect transistor Q1, field effect transistor Q2, voltage stabilizing didoe DZ1, triode Q3, electrochemical capacitor C1, electrochemical capacitor C2, electrochemical capacitor C3, resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, resistance R 6, resistance R 7, resistance R 8 and resistance R 9; Clock chip U1 is the integrated chip of NE555 model, and it has pin 1 to No. 8; Field effect transistor Q1 and field effect transistor Q2 are the high-power MOS tube of IRFP264 model;

The positive pole of above-mentioned diode D1 is the first power input of above-mentioned flash of light control module; The collector electrode conllinear of one end of one end of the negative pole of diode D1, resistance R 3, resistance R 4 and triode Q3; The negative pole conllinear of the base stage of the other end of the other end of resistance R 3, resistance R 4, triode Q3 and voltage stabilizing didoe DZ1; One end conllinear of the positive pole of the emitter-base bandgap grading of triode Q3, electrochemical capacitor C3 and resistance R 8; No. 4 and No. 8 pin conllinear of one end of the other end of resistance R 8, resistance R 6 and clock chip U1; No. 7 pin conllinear of one end of the other end of resistance R 6, resistance R 9 and clock chip U1; The anodal conllinear of No. 6 pins of the other end of resistance R 9, clock chip U1 and No. 2 pins, electrochemical capacitor C2; No. 5 pins of clock chip U1 are electrically connected to one end of capacitor C 1; No. 3 pins of clock chip U1 are electrically connected to one end of resistance R 7; One end conllinear of one end of the other end of resistance R 7, resistance R 1 and resistance R 2; The other end of resistance R 1 is electrically connected to the grid of field effect transistor Q1; The other end of resistance R 2 is electrically connected to the grid of field effect transistor Q2; The drain electrode of field effect transistor Q1 is the first control output end of above-mentioned flash of light control module; The drain electrode of field effect transistor Q2 is the second control output end of above-mentioned flash of light control module; No. 1 pin of the other end of the source electrode of field effect transistor Q1, the source electrode of field effect transistor Q2, capacitor C 1, clock chip U1, the other end of electrochemical capacitor C2, the positive pole of the other end of electrochemical capacitor C3 and voltage stabilizing didoe DZ1 form a common junction because of conllinear, and this common junction is the second source input of above-mentioned flash of light control module.

Further scheme is: the resonator of above-mentioned LLC modular converter and accessory circuit thereof comprise resonator chip IC1, electric capacity 1C6, electric capacity 1C10, voltage-stabiliser tube 1DZ3, electric capacity 1C11, electric capacity 1C12, diode 1D2, resistance 1R15, electric capacity 1C13, voltage-stabiliser tube 1DZ4, electric capacity 1C16, electric capacity 1C17, resistance 1R18, diode 1D3, resistance 1R16, resistance 1R17, field effect transistor 1Q3, resistance 1R19, diode 1D4, resistance 1R20, resistance 1R21 and field effect transistor 1Q4; Resonator chip IC1 is the integrated chip of SSC9522S model, and it has pin 1 to No. 18;

No. 1 pin of resonator chip IC1 is the 3rd power end of above-mentioned resonator and accessory circuit thereof; No. 2 pin of resonator chip IC1 and one end of electric capacity 1C6 form a common junction because of conllinear, this common junction is the secondary signal input of above-mentioned resonator and accessory circuit thereof, is also the overload short circuit guard signal input of above-mentioned LLC modular converter; No. 3 pin of resonator chip IC1 are the feedback signal input of above-mentioned resonator and accessory circuit thereof; No. 5 pin of resonator chip IC1, one end of electric capacity 1C10 and the negative pole of voltage-stabiliser tube 1DZ3 form a common junction because of conllinear, and this common junction is the first signal input of above-mentioned resonator and accessory circuit thereof; No. 6 pin of resonator chip IC1 are the first current sampling signal input of above-mentioned resonator and accessory circuit thereof; No. 7 pin of resonator chip IC1 and one end of electric capacity 1C11 form a common junction because of conllinear, and this common junction is the second current sampling signal input of above-mentioned resonator and accessory circuit thereof; No. 8 pin of resonator chip IC1, one end of electric capacity 1C12 and the anodal conllinear of diode 1D2; The negative pole of diode 1D2 is electrically connected to one end of resistance 1R15; No. 14 pin conllinear of the negative pole of one end of the other end of resistance 1R15, electric capacity 1C13, voltage-stabiliser tube 1DZ4 and resonator chip IC1; No. 9 pin of resonator chip IC1 are electrically connected to one end of electric capacity 1C17; The other end of electric capacity 1C17 is electrically connected to one end of electric capacity 1C16; No. 15 pin of the other end of the positive pole of the other end of electric capacity 1C16, voltage-stabiliser tube 1DZ4, electric capacity 1C13 and resonator chip IC1 form a common junction because of conllinear, and this common junction is above-mentioned resonator and the voltage signal output end of accessory circuit thereof; No. 11 pin of resonator chip IC1, one end of resistance 1R19 and one end conllinear of resistance 1R20; The other end of resistance IR19 is connected with the negative electricity of diode 1D4; One end conllinear of the other end of the positive pole of diode 1D4, resistance 1R20, the grid of field effect transistor 1Q4 and resistance 1R21; The source electrode conllinear of one end of the drain electrode of field effect transistor 1Q4, resistance 1R18 and field effect transistor 1Q3; The grid conllinear of one end of the positive pole of the other end of resistance IR18, diode 1D3, resistance 1R17 and field effect transistor 1Q3; The negative pole of diode 1D3 is electrically connected to one end of resistance IR16; No. 16 pin conllinear of the other end of the other end of resistance IR16, resistance 1R17 and resonator chip IC1; The drain electrode of field effect transistor 1Q3 is the first power end of above-mentioned resonator and accessory circuit thereof; No. 4 pin of resonator chip IC1 and No. 10 pin, the other end of electric capacity 1C6, the positive pole of the other end of electric capacity 1C10, voltage-stabiliser tube 1DZ3, the other end of the other end of electric capacity 1C11, electric capacity 1C12, the source electrode of the other end of resistance 1R21 and field effect transistor 1Q4 forms a common junction because of conllinear, this common junction is the second source end of above-mentioned resonator and accessory circuit thereof.

Further scheme is: the current rectifying and wave filtering circuit of above-mentioned LLC modular converter comprises Schottky barrier diodes 1D5, Schottky barrier diodes 1D6, electrochemical capacitor 1C22, electrochemical capacitor 1C23, electrochemical capacitor 1C24, inductance 1L3, inductance 1L4, voltage stabilizing didoe IDZ5, ground capacity CY2 and ground capacity CY3;

The positive pole of Schottky barrier diodes 1D5 is the first input end of above-mentioned current rectifying and wave filtering circuit; The positive pole of Schottky barrier diodes 1D6 is the second input of above-mentioned current rectifying and wave filtering circuit; One end conllinear of the positive pole of the positive pole of the negative pole of the negative pole of Schottky barrier diodes 1D5, Schottky barrier diodes 1D6, electrochemical capacitor 1C22, electrochemical capacitor 1C23 and inductance 1L3; One end of the negative pole of the negative pole of electrochemical capacitor 1C22, electrochemical capacitor 1C23 and inductance 1L4 forms a common junction because of conllinear, and this common junction is the 3rd input of above-mentioned current rectifying and wave filtering circuit; One end of the negative pole of the positive pole of the other end of inductance 1L3, electrochemical capacitor 1C24, voltage stabilizing didoe IDZ5 and ground capacity CY2 forms a common junction because of conllinear, and this common junction is the first power output end of above-mentioned current rectifying and wave filtering circuit; One end of the positive pole of the negative pole of the other end of inductance 1L4, electrochemical capacitor 1C24, voltage stabilizing didoe IDZ5 and ground capacity CY3 forms a common junction because of conllinear, and this common junction is the second source output of above-mentioned current rectifying and wave filtering circuit; Another termination the earth of the other end of ground capacity CY2 and ground capacity CY3.

Further scheme is: the voltage stabilizing circuit of above-mentioned LLC modular converter comprises three end adjustable shunt reference voltage source 1U1, resistance 1R25, resistance 1R26, resistance 1R27, variable resistor VR1, electric capacity 1C20, electric capacity 1C21, resistance 1R30, resistance 1R29, resistance 1R28, resistance 1R31, resistance 1R32 and LED 1; Three end adjustable shunt reference voltage source 1U1 are three end adjustable shunt reference voltage sources of TL431 model;

One end of above-mentioned resistance 1R25, one end of resistance 1R28, one end of resistance 1R31 and one end of resistance 1R32 form a common junction because of conllinear, and this common junction is the first power end of above-mentioned voltage stabilizing circuit; One end of the other end of resistance 1R28 and resistance 1R29 forms a common junction because of conllinear, and this common junction is the first signal output of above-mentioned voltage stabilizing circuit; The other end of resistance 1R25 is electrically connected to one end of resistance 1R26; The reference utmost point conllinear of one end of one end of one end of the other end of resistance 1R26, resistance 1R27, electric capacity 1C20, electric capacity 1C21, three end adjustable shunt reference voltage source 1U1; Fixed terminals of the other end of resistance 1R27 and variable resistor VR1 and slip terminals conllinear; The other end of electric capacity 1C20 is electrically connected to one end of resistance 1R30; The other end of the other end of resistance 1R30, electric capacity 1C21, three negative poles of end adjustable shunt reference voltage source 1U1 and the other end of resistance 1R29 form a common junction because of conllinear, and this common junction is the secondary signal output of above-mentioned voltage stabilizing circuit; The anodal conllinear of the other end of the other end of resistance 1R31, resistance 1R32 and LED 1; The negative pole of LED 1, three positive poles of end adjustable shunt reference voltage source 1U1 and another fixed terminals of variable resistor VR1 form a common junction because of conllinear, and this common junction is the second source end of above-mentioned voltage stabilizing circuit.

Further scheme also has: the current sampling protective circuit of above-mentioned LLC modular converter comprises electric capacity 1C14, resistance 1R22, resistance 1R23, resistance 1R24 and electric capacity 1C15;

One end of electric capacity 1C14 is the sampled signal input of above-mentioned current sampling protective circuit; One end of one end of one end of the other end of electric capacity 1C14, resistance 1R22, resistance 1R23 and resistance 1R24 forms a common junction because of conllinear, and this common junction is the secondary signal output of above-mentioned current sampling protective circuit; One end of the other end of resistance 1R24 and electric capacity 1C15 forms a common junction because of conllinear, and this common junction is the first signal output of above-mentioned current sampling protective circuit; The other end of the other end of the other end of resistance 1R22, resistance 1R23 and electric capacity 1C15 forms a common junction because of conllinear, and this common junction is the power end of above-mentioned current sampling protective circuit;

The feedback circuit of above-mentioned LLC modular converter comprises resistance 1R13, electric capacity 1C7, photoelectrical coupler 2OP1, resistance 1R14, electric capacity 1C8 and electric capacity 1C9; Photoelectrical coupler 2OP1 is the photoelectrical coupler of PC817 model, and it has pin 1 to No. 4;

No. 1 pin of photoelectrical coupler 2OP1 is the first signal input of above-mentioned feedback circuit, and No. 2 pin of photoelectrical coupler 2OP1 are the secondary signal input of above-mentioned feedback circuit; No. 4 pin of photoelectrical coupler 2OP1, one end of resistance 1R13 and one end conllinear of electric capacity 1C7; One end of one end of the other end of resistance 1R13, resistance 1R14 and electric capacity 1C9 forms a common junction because of conllinear, and this common junction is the voltage signal output end of above-mentioned feedback circuit; The other end of resistance 1R14 is electrically connected to one end of electric capacity 1C8; No. 3 pin of the other end of the other end of the other end of electric capacity 1C8, electric capacity 1C9, electric capacity 1C7 and photoelectrical coupler 2OP1 form a common junction because of conllinear, and this common junction is the power end of above-mentioned feedback circuit.

The present invention has positive effect: (1) headlight of railroad locomotive illumination of the present invention and flash of light control device, by adopting LLC modular converter, the conversion efficiency of its power supply can reach 91-96%, and does not need another wind-receiving fan to lower the temperature, compared to prior art effective energy savings.(2) headlight of railroad locomotive illumination of the present invention and flash of light control device, when it uses, work in the wavy state of near sinusoidal, and harmonic content is few, can effectively reduce the electromagnetic interference to locomotive miscellaneous equipment, and Electro Magnetic Compatibility is good.(3) headlight of railroad locomotive illumination of the present invention and flash of light control device, when it uses, work in higher operating frequency 80kHz, thereby the less volume and weight of transformer adopting can obtain larger power stage, thereby than with prior art, can effectively reduce volume and the weight reduction of controller, cost-saving, be convenient to install.(4) headlight of railroad locomotive illumination of the present invention and flash of light control device; the circuit design such as the overvoltage overheat protector module by the anti-reverse power connection arranging in anti-interference EMI filtration module, anti-overvoltage circuit and setting, overload short circuit protection module; job stability and the reliability of control device have been improved significantly, effectively the useful life of extended control device.

Accompanying drawing explanation

Fig. 1 is circuit structure block diagram of the present invention;

Fig. 2 is the circuit structure block diagram of the LLC modular converter in Fig. 1;

Fig. 3 is the electrical schematic diagram of the anti-interference EMI filtration module in Fig. 1;

Fig. 4 is the electrical schematic diagram of the power module in Fig. 1;

Fig. 5 is the electrical schematic diagram of Fig. 2;

Fig. 6 is the electrical schematic diagram of the overload short circuit protection module in Fig. 1;

Fig. 7 is the electrical schematic diagram of the overvoltage overheat protector module in Fig. 1;

Fig. 8 is the electrical schematic diagram of the flash of light control module in Fig. 1;

Fig. 9 is a kind of electrical connection schematic diagram of applying on locomotive of the present invention.

Embodiment

Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.

(embodiment 1)

See Fig. 1, the headlight of railroad locomotive illumination of the present embodiment and flash of light control device, be mainly comprised of anti-interference EMI filtration module, power module, LLC modular converter, overload short circuit protection module, overvoltage overheat protector module and flash of light control module.

Anti-interference EMI filtration module is provided with first, second, and third power input and first, second power output end; Power module is provided with first, second power input and power output end; LLC modular converter is provided with the first power input, second source input, the first power output end, second source output, overvoltage overheat protector signal input part and overload short circuit guard signal input; Overvoltage overheat protector module and overload short circuit protection module are respectively equipped with first to fourth power input and guard signal output; Flash of light control module is provided with the first power input, second source input, the first control output end and the second control output end.

The first power input of power module and the first power input of LLC modular converter are electrically connected to the first power output end of anti-interference EMI filtration module respectively; The 4th power input of the second source input of power module, the second source input of LLC modular converter, overvoltage overheat protector module and the 4th power input of overload short circuit protection module are electrically connected to the second source output of anti-interference EMI filtration module respectively; The 3rd power input of anti-interference EMI filtration module, the first power input of overvoltage overheat protector module and the first power input of overload short circuit protection module are electrically connected to the power output end of power module respectively; The first power input of the second source input of overvoltage overheat protector module, the second source input of overload short circuit protection module and flash of light control module is electrically connected to the first power output end of LLC modular converter respectively; The second source input of the 3rd power input of overvoltage overheat protector module, the 3rd power input of overload short circuit protection module and flash of light control module is electrically connected to the second source output of LLC modular converter respectively; The overvoltage overheat protector signal input part of LLC modular converter is electrically connected to the guard signal output of overvoltage overheat protector module; The overload short circuit guard signal input of LLC modular converter is electrically connected to the guard signal output of overload short circuit protection module; During use, the first power input of anti-interference EMI filtration module is connected with negative electricity with the positive pole of the DC110V power supply of locomotive with second source input; The first power output end of LLC modular converter and second source output provide 24V DC supply for locomotive headlamp; Flash control signal is exported respectively in the first control output end and second control output end of flash of light control module.

See Fig. 2, LLC modular converter forms by sampling bleeder circuit, resonator and accessory circuit thereof, switch transformer circuit, current rectifying and wave filtering circuit, voltage stabilizing circuit, current sampling protective circuit and feedback circuit.

Sampling bleeder circuit is provided with the first power end, second source end and power output end; Resonator and accessory circuit thereof are provided with the first to the 3rd power end, first signal input, secondary signal input, feedback signal input, the first current sampling signal input, the second current sampling signal input and voltage signal output end; Switch transformer circuit is provided with the first power end, second source end, the first to the 3rd output and current signal output end; Current rectifying and wave filtering circuit is provided with the first to the 3rd input, the first power output end and second source output; Voltage stabilizing circuit is provided with the first power end, second source end, first signal output and secondary signal output; Current sampling protective circuit is provided with sampled signal input, first signal output, secondary signal output and power end; Feedback circuit is provided with first signal input, secondary signal input, voltage signal output end and power end.

Sampling the first power end resonator of bleeder circuit and the first power end of accessory circuit thereof form a common junction because of conllinear, and this common junction is the first power input of aforesaid LLC modular converter; The second source end of second source end, resonator and accessory circuit thereof of sampling bleeder circuit is, the second source end of switch transformer circuit, the power end of current sampling protective circuit and the power end of feedback circuit form a common junction because of conllinear, and this common junction is the second source input of aforesaid LLC modular converter; The first signal input of resonator and accessory circuit thereof and secondary signal input are respectively overvoltage overheat protector signal input part and the overload short circuit guard signal input of aforesaid LLC modular converter; The first power output end of current rectifying and wave filtering circuit and second source output are the first power output end and the second source output of aforesaid LLC modular converter.

See Fig. 3, anti-interference EMI filtration module is mainly comprised of the first protective tube F1, the second protective tube F2, piezo-resistance RV1, field effect transistor 1Q1, electric capacity 1C1, voltage-stabiliser tube 1DZ1, resistance 1R1, resistance 1R2, resistance 1R3, resistance 1R4, common mode EMI filters L1, relay J K1, negative temperature coefficient resister 1RT1, field effect transistor 1Q2, diode 1D1, resistance 1R5, resistance 1R6, resistance 1R7, voltage-stabiliser tube 1DZ2, resistance 1R8, electric capacity 1C2, electrochemical capacitor 1C3 and electrochemical capacitor 1C4.Common mode EMI filters L1 has terminals 1 to No. 4; Relay J K1 has terminals 1 to No. 5.

One end of the first protective tube F1 is the first power input of aforesaid anti-interference EMI filtration module; One end of the second protective tube F2 is the second source input of aforesaid anti-interference EMI filtration module; No. 2 terminals conllinear of one end of one end of the other end of the first protective tube F1 and piezo-resistance RV1, resistance 1R1 and common mode EMI filters L1; Second other end of protective tube F2 is, the drain electrode conllinear of the other end of piezo-resistance RV1 and field effect transistor 1Q1; No. 1 terminals conllinear of one end of the positive pole of one end of the source electrode of field effect transistor 1Q1, electric capacity 1C1, voltage-stabiliser tube 1DZ1, resistance 1R4 and common mode EMI filters L1; One end conllinear of the other end of the negative pole of the other end of the grid of field effect transistor 1Q1, electric capacity 1C1, voltage-stabiliser tube 1DZ1, resistance 1R4 and resistance 1R3; The other end of resistance 1R3 is connected with the other end of resistance 1R1 by resistance 1R2; One end conllinear of No. 4 terminals of common mode EMI filters L1, relay J K1 No. 3 and No. 4 terminals and negative temperature coefficient resister 1RT1; No. 2 terminals of relay J K1, the negative pole of diode 1D1, one end conllinear of one end of resistance 1R5 and resistance 1R6; No. 1 terminals of relay J K1, the positive pole of diode 1D1 and the drain electrode conllinear of field effect transistor 1Q2; One end conllinear of one end of one end of the grid of field effect transistor 1Q2, resistance 1R7, resistance 1R8 and electric capacity 1C2; The other end of resistance 1R7 is electrically connected to the positive pole of voltage-stabiliser tube 1DZ2; The other end of the other end of the negative pole of voltage-stabiliser tube 1DZ2, resistance 1R5 and resistance 1R6 forms a common junction because of conllinear, and this common junction is the 3rd power input of aforesaid anti-interference EMI filtration module; No. 5 terminals of the other end of negative temperature coefficient resister 1RT1, relay J K1, the positive pole of electrochemical capacitor 1C3 and the positive pole of electrochemical capacitor 1C4 form a common junction because of conllinear, and this common junction is the first power output end of aforesaid anti-interference EMI filtration module; No. 3 terminals of common mode EMI filters L1, the source electrode of field effect transistor 1Q2, the other end of the other end of resistance 1R8, electric capacity 1C2, the negative pole of the negative pole of electrochemical capacitor 1C3 and electrochemical capacitor 1C4 form a common junction because of conllinear, and this common junction is the second source output of aforesaid anti-interference EMI filtration module.

The operation principle of anti-interference EMI filtration module: the DC110V power supply of locomotive is inputted by VIN+ and PGND, VIN+ is the anode of DC110V power supply, the negative terminal that PGND is DC110V; Then pass through double insurance pipe F1, the preferred 6.3A/200V of F2(model) carry out current-limiting protection.The preferred BK181KD16 of piezo-resistance RV1(model) be attempted by DC110V circuit positive and negative terminal, prevent from occurring high pressure in loop, as overvoltage protection, use.Be serially connected in the field effect transistor 1Q1(IRFP260 of negative terminal) as anti-power supply reverse connecting protection, use.Power supply reverse connection protection system is by resistance 1R1, resistance 1R2, resistance 1R3, resistance 1R4, voltage-stabiliser tube 1DZ1, electric capacity 1C1 and hand over and should manage 1Q1 and form, and prevents from that DC110V both positive and negative polarity from connecing inverse time to burn out this control device.Common mode EMI filters L1 is for suppressing the electromagnetic signal of common mode.The DC110V power supply of input is by the preferred model NTC20D-15 of negative temperature coefficient resister 1RT1(), to reduce the rush of current of booting moment to rear class.At negative temperature coefficient resister 1RT1 two ends and succeed the preferred model JQX-115F of electrical equipment JK1() main contact, time delay is connected for 1 second afterwards.After relay J K1 main contact is connected, negative temperature coefficient resister 1RT1, by short circuit, makes negative temperature coefficient resister 1RT1 depart from work, and circuit enters normal operating conditions.Relay J K1 main contact delayed time system is comprised of resistance 1R5, resistance 1R6, diode 1D1, resistance 1R7, voltage-stabiliser tube 1DZ2, resistance 1R8, electric capacity 1C2, field effect transistor 1Q2 and relay J K1.P12V+ is provided by the power module of rear class.The DC110V power supply of locomotive after foregoing circuit, then pass through electrochemical capacitor 1C3, electrochemical capacitor 1C4(preferred 220UF, 220V) output voltage HV offers late-class circuit conversion and uses after double-smoothing.

See Fig. 4, power module is mainly comprised of switching power source chip 3IC1, voltage stabilizing didoe 3DZ1, diode 3D1, diode 3D2, diode 3D3, inductance 3L1, electric capacity 3C1, electric capacity 3C2, electric capacity 3C3 and electrochemical capacitor 3C4.The integrated chip of preferred VIPER22A model in switching power source chip 3IC1 the present embodiment, it has pin 1 to No. 8.

No. 5 to No. 8 pin of switching power source chip 3IC1 form a common junction because of conllinear, and this common junction is first power input (show in Fig. 4 and connect mark HV) of aforesaid power module; The negative pole of the positive pole of diode 3D1 and electrochemical capacitor 3C4 forms a common junction because of conllinear, and this common junction is the second source input of aforesaid power module; No. 1 of switching power source chip 3IC1 and No. 2 pin, one end of electric capacity 3C1, one end of one end of electric capacity 3C2, electric capacity 3C3 are, the negative pole conllinear of one end of inductance 3L1 and diode 3D1; No. 3 pin of switching power source chip 3IC1, the other end of electric capacity 3C1 and the anodal conllinear of voltage stabilizing didoe 3DZ1; The negative pole conllinear of the other end of the negative pole of voltage stabilizing didoe 3DZ1, electric capacity 3C3 and diode 3D3; No. 4 pin of switching power source chip 3IC1, the other end of electric capacity 3C2 and the negative pole conllinear of diode 3D2; The positive pole of diode 3D2, diode 3D3 are anodal, the other end of inductance 3L1 and the positive pole of electrochemical capacitor 3C4 form a common junction because of conllinear, this common junction is the power output end of aforesaid power module, its output+12V voltage (show in Fig. 4 and connect mark P12V+).

See Fig. 5 and referring to Fig. 2, the sampling bleeder circuit of LLC modular converter is mainly comprised of resistance 1R9, resistance 1R10, resistance 1R11, resistance 1R12 and electric capacity 1C5.One end of resistance 1R9 is the first power end of aforesaid sampling bleeder circuit; The other end of resistance 1R9 is connected with one end of resistance 1R11 by resistance 1R10; One end of one end of the other end of resistance 1R11, resistance 1R12 and electric capacity 1C5 forms a common junction because of conllinear, and this common junction is the power output end of aforesaid sampling bleeder circuit; The other end of the other end of resistance 1R12 and electric capacity 1C5 forms a common junction because of conllinear, and this common junction is the second source end of aforesaid sampling bleeder circuit.

The resonator of LLC modular converter and accessory circuit thereof are mainly comprised of resonator chip IC1, electric capacity 1C6, electric capacity 1C10, voltage-stabiliser tube 1DZ3, electric capacity 1C11, electric capacity 1C12, diode 1D2, resistance 1R15, electric capacity 1C13, voltage-stabiliser tube 1DZ4, electric capacity 1C16, electric capacity 1C17, resistance 1R18, diode 1D3, resistance 1R16, resistance 1R17, field effect transistor 1Q3, resistance 1R19, diode 1D4, resistance 1R20, resistance 1R21 and field effect transistor 1Q4.In resonator chip IC1 the present embodiment, preferably adopt the integrated chip of SSC9522S model, it has pin 1 to No. 18.

No. 1 pin of resonator chip IC1 is the 3rd power end of aforesaid resonator and accessory circuit thereof; No. 2 pin of resonator chip IC1 and one end of electric capacity 1C6 form a common junction because of conllinear, this common junction is the secondary signal input of aforesaid resonator and accessory circuit thereof, is also the overload short circuit guard signal input (showing linkage flag VCC in Fig. 5) of aforesaid LLC modular converter; No. 3 pin of resonator chip IC1 are the feedback signal input of aforesaid resonator and accessory circuit thereof; No. 5 pin of resonator chip IC1, one end of electric capacity 1C10 and the negative pole of voltage-stabiliser tube 1DZ3 form a common junction because of conllinear, this common junction is the first signal input of aforesaid resonator and accessory circuit thereof, is also the overvoltage overheat protector signal input part (showing linkage flag CSS in Fig. 5) of aforesaid LLC modular converter; No. 6 pin of resonator chip IC1 are the first current sampling signal input of aforesaid resonator and accessory circuit thereof; No. 7 pin of resonator chip IC1 and one end of electric capacity 1C11 form a common junction because of conllinear, and this common junction is the second current sampling signal input of aforesaid resonator and accessory circuit thereof; No. 8 pin of resonator chip IC1, one end of electric capacity 1C12 and the anodal conllinear of diode 1D2; The negative pole of diode 1D2 is electrically connected to one end of resistance 1R15; No. 14 pin conllinear of the negative pole of one end of the other end of resistance 1R15, electric capacity 1C13, voltage-stabiliser tube 1DZ4 and resonator chip IC1; No. 9 pin of resonator chip IC1 are electrically connected to one end of electric capacity 1C17; The other end of electric capacity 1C17 is electrically connected to one end of electric capacity 1C16; No. 15 pin of the other end of the positive pole of the other end of electric capacity 1C16, voltage-stabiliser tube 1DZ4, electric capacity 1C13 and resonator chip IC1 form a common junction because of conllinear, and this common junction is the voltage signal output end of aforesaid resonator and accessory circuit thereof; No. 11 pin of resonator chip IC1, one end of resistance 1R19 and one end conllinear of resistance 1R20; The other end of resistance IR19 is connected with the negative electricity of diode 1D4; One end conllinear of the other end of the positive pole of diode 1D4, resistance 1R20, the grid of field effect transistor 1Q4 and resistance 1R21; The source electrode conllinear of one end of the drain electrode of field effect transistor 1Q4, resistance 1R18 and field effect transistor 1Q3; The grid conllinear of one end of the positive pole of the other end of resistance IR18, diode 1D3, resistance 1R17 and field effect transistor 1Q3; The negative pole of diode 1D3 is electrically connected to one end of resistance IR16; No. 16 pin conllinear of the other end of the other end of resistance IR16, resistance 1R17 and resonator chip IC1; The drain electrode of field effect transistor 1Q3 is the first power end of aforesaid resonator and accessory circuit thereof; No. 4 pin of resonator chip IC1 and No. 10 pin, the other end of electric capacity 1C6, the positive pole of the other end of electric capacity 1C10, voltage-stabiliser tube 1DZ3, the other end of the other end of electric capacity 1C11, electric capacity 1C12, the source electrode of the other end of resistance 1R21 and field effect transistor 1Q4 forms a common junction because of conllinear, this common junction is the second source end of aforesaid resonator and accessory circuit thereof.

Switch transformer electricity routing transformer T1, inductance 1L0, electric capacity 1C18 and electric capacity 1C19 form.One end of inductance 1L0 is the first power end of aforesaid switch transformer circuit; The other end of inductance 1L0 is electrically connected to the one end (No. 5 terminals) on the former limit of transformer T1; The other end on the former limit of transformer T1 (No. 6 terminals), one end of electric capacity 1C18 and one end of electric capacity 1C19 form a common junction because of conllinear, and this common junction is the current signal output end of aforesaid switch transformer circuit; The other end of the other end of electric capacity 1C18 and electric capacity 1C19 forms a common junction because of conllinear, and this common junction is the second source end of aforesaid switch transformer circuit; A top on T1 limit of transformer (No. 8 terminals), another top (No. 9 terminals) and centre tap end (No. 10 terminals) are respectively the first to the 3rd output of switch transformer.

Current rectifying and wave filtering circuit is comprised of Schottky barrier diodes 1D5, Schottky barrier diodes 1D6, electrochemical capacitor 1C22, electrochemical capacitor 1C23, electrochemical capacitor 1C24, inductance 1L3, inductance 1L4, voltage stabilizing didoe IDZ5, ground capacity CY2 and ground capacity CY3.

The positive pole of Schottky barrier diodes 1D5 is the first input end of aforesaid current rectifying and wave filtering circuit; The positive pole of Schottky barrier diodes 1D6 is the second input of aforesaid current rectifying and wave filtering circuit; One end conllinear of the positive pole of the positive pole of the negative pole of the negative pole of Schottky barrier diodes 1D5, Schottky barrier diodes 1D6, electrochemical capacitor 1C22, electrochemical capacitor 1C23 and inductance 1L3; One end of the negative pole of the negative pole of electrochemical capacitor 1C22, electrochemical capacitor 1C23 and inductance 1L4 forms a common junction because of conllinear, and this common junction is the 3rd input of aforesaid current rectifying and wave filtering circuit; One end of the negative pole of the positive pole of the other end of inductance 1L3, electrochemical capacitor 1C24, voltage stabilizing didoe IDZ5 and ground capacity CY2 forms a common junction because of conllinear, and this common junction is the first power output end of aforesaid current rectifying and wave filtering circuit; Its output DC24V DC power supply; One end of the positive pole of the negative pole of the other end of inductance 1L4, electrochemical capacitor 1C24, voltage stabilizing didoe IDZ5 and ground capacity CY3 forms a common junction because of conllinear, and this common junction is the second source output (being also the galvanic negative pole of DC24V) of aforesaid current rectifying and wave filtering circuit; Another termination the earth of the other end of ground capacity CY2 and ground capacity CY3.

Voltage stabilizing circuit is mainly comprised of three end adjustable shunt reference voltage source 1U1, resistance 1R25, resistance 1R26, resistance 1R27, variable resistor VR1, electric capacity 1C20, electric capacity 1C21, resistance 1R30, resistance 1R29, resistance 1R28, resistance 1R31, resistance 1R32 and LED 1.In three end adjustable shunt reference voltage source 1U1 the present embodiment, preferably adopt the three end adjustable shunt reference voltage sources that model is TL431.

One end of one end of one end of one end of resistance 1R25, resistance 1R28, resistance 1R31 and resistance 1R32 forms a common junction because of conllinear, and this common junction is the first power end of aforesaid voltage stabilizing circuit; One end of the other end of resistance 1R28 and resistance 1R29 forms a common junction because of conllinear, and this common junction is the first signal output of aforesaid voltage stabilizing circuit; The other end of resistance 1R25 is electrically connected to one end of resistance 1R26; The reference utmost point (1 pin) conllinear of one end of one end of one end of the other end of resistance 1R26, resistance 1R27, electric capacity 1C20, electric capacity 1C21, three end adjustable shunt reference voltage source 1U1; Fixed terminals of the other end of resistance 1R27 and variable resistor VR1 and slip terminals conllinear; The other end of electric capacity 1C20 is electrically connected to one end of resistance 1R30; The negative pole (3 pin) of the other end of the other end of resistance 1R30, electric capacity 1C21, three end adjustable shunt reference voltage source 1U1 and the other end of resistance 1R29 form a common junction because of conllinear, and this common junction is the secondary signal output of aforesaid voltage stabilizing circuit; The anodal conllinear of the other end of the other end of resistance 1R31, resistance 1R32 and LED 1; The positive pole (2 pin) of the negative pole of LED 1, three end adjustable shunt reference voltage source 1U1 and another fixed terminals of variable resistor VR1 form a common junction because of conllinear, and this common junction is the second source end of aforesaid voltage stabilizing circuit.

Current sampling protective circuit is mainly comprised of electric capacity 1C14, resistance 1R22, resistance 1R23, resistance 1R24 and electric capacity 1C15.One end of electric capacity 1C14 is the sampled signal input of aforesaid current sampling protective circuit; One end of one end of one end of the other end of electric capacity 1C14, resistance 1R22, resistance 1R23 and resistance 1R24 forms a common junction because of conllinear, and this common junction is the secondary signal output of aforesaid current sampling protective circuit; One end of the other end of resistance 1R24 and electric capacity 1C15 forms a common junction because of conllinear, and this common junction is the first signal output of aforesaid current sampling protective circuit; The other end of the other end of the other end of resistance 1R22, resistance 1R23 and electric capacity 1C15 forms a common junction because of conllinear, and this common junction is the power end of aforesaid current sampling protective circuit.

Feedback circuit is mainly conveniently separated into two parts for drawing and is designated 2OP1A and 2OP1B in resistance 1R13, electric capacity 1C7, photoelectrical coupler 2OP1(Fig. 6), resistance 1R14, electric capacity 1C8 and electric capacity 1C9 form.In photoelectrical coupler 2OP1 the present embodiment, preferably adopt the photoelectrical coupler of PC817 model, it has pin 1 to No. 4; No. 1 pin of photoelectrical coupler 2OP1 is the first signal input of aforesaid feedback circuit, and No. 2 pin of photoelectrical coupler 2OP1 are the secondary signal input of aforesaid feedback circuit; No. 4 pin of photoelectrical coupler 2OP1, one end of resistance 1R13 and one end conllinear of electric capacity 1C7; One end of one end of the other end of resistance 1R13, resistance 1R14 and electric capacity 1C9 forms a common junction because of conllinear, and this common junction is the voltage signal output end of aforesaid feedback circuit; The other end of resistance 1R14 is electrically connected to one end of electric capacity 1C8; No. 3 pin of the other end of the other end of the other end of electric capacity 1C8, electric capacity 1C9, electric capacity 1C7 and photoelectrical coupler 2OP1 form a common junction because of conllinear, and this common junction is the power end of aforesaid feedback circuit.

The operation principle of LLC modular converter: the 1 pin sampling input voltage HV of resonator chip IC1; Sampling bleeder circuit, when HV voltage, quits work control resonator chip IC1 during higher than 140V lower than 80V or HV voltage, does not damage with protective circuit.3 pin (FB) of resonator chip IC1 are Voltage Feedback input, and out-put supply DC24V signal feeds back to resonator chip IC1 by feedback circuit, to keep stablizing of out-put supply DC24; 5 pin of resonator chip IC1 are soft start end, meet electric capacity 1C10 and voltage-stabiliser tube 1DZ3 to delay power initiation on its pin, reduce to start surge current.6 pin (OC) of resonator chip IC1 are overcurrent protection end, and 7 pin are resonance current detection terminal, the signal of the equal received current sampling of 6 pin and 7 pin protective circuit output; 8 pin of resonator chip IC1 are gate-drive power supply terminal, form power supply terminal supply with and on 14 pin, manage gate pole power supply by electric capacity 1C12, diode 1D2, resistance 1R15.9 pin of resonator chip IC1 are series resonance detection terminal; Its 11 pin is that lower pipe drives signal end (output of low side gate pole), by resistance 1R19, diode 1D4, resistance 1R20, resistance 1R21, is input to field effect transistor 1Q4 grid.14 pin of resonator chip IC1 are upper pipe gate pole power source supply end, meet electric capacity 1C13, voltage stabilizing didoe 1DZ4 and provide filtering and pressure stabilization function for feed end on its pin.15 pin of resonator chip IC1 are for managing up and down mid point output voltage, and high-end gate pole is exported floating ground.16 pin of resonator chip IC1 are that upper pipe drives signal end (high-end gate pole output), by resistance 1R18, diode 1D3, resistance 1R16, resistance 1R17, are input to field effect transistor 1Q3 grid.Field effect transistor 1Q3,1Q4 form switching tube and take turns to operate, and in switch transformer circuit, by former limit, electric capacity 1C18, the common network consisting of electric capacity 1C19 of inductance 1L0, transformer T1, form resonant tank, work in resonance condition.After the full-wave rectification that the inferior limit output of transformer T1 forms via Schottky barrier diodes 1D5, Schottky barrier diodes 1D6, output dc voltage forms DC24V direct voltage after electric capacity 1C22, electric capacity 1C23, inductance 1L3, inductance 1C24 filtering.It is core that voltage stabilizing circuit be take TL431 tri-end adjustable shunt reference voltage source 1U1, and the DC24V direct voltage of output is implemented to voltage stabilizing.

See Fig. 6, overload short circuit protection module is mainly comprised of clock chip 2IC1, resistance 2R1, electric capacity 2C1, electric capacity 2C2, diode 2D1, resistance 2R2, electric capacity 2C3, electric capacity 2C4, electric capacity 2C4A, electric capacity 2C5, diode 2D2, diode 2D3, resistance 2R5, resistance 2R6, triode Q6, resistance 2R4, resistance 2R3, triode 2Q1, electrochemical capacitor 2C6, resistance 2R7, photoelectrical coupler 2OP2, resistance 2R8, resistance 2R8A and resistance 2R8B.In the present embodiment, clock chip 2IC1 preferably adopts the integrated chip of NE555 model, and it has pin 1 to No. 8; Photoelectrical coupler 2OP2 adopts the photoelectrical coupler of PC817 model.

No. 4 of clock chip 2IC1 and No. 8 pin, one end of resistance 2R1, the emitter-base bandgap grading of one end of electric capacity 2C1, triode 2Q1 are, 4 pin of one end of resistance 2R3 and photoelectrical coupler 2OP2 form a common junction because of conllinear, and this common junction is the first power input of aforesaid overload short circuit protection module; One end conllinear of the other end of resistance 2R1, clock chip 2IC1 No. 7 and No. 6 pin and electric capacity 2C2; No. 2 pin of clock chip 2IC1, the negative pole of diode 2D1, one end conllinear of one end of one end of resistance 2R2, electric capacity 2C1, electric capacity 2C3, electric capacity 2C4 and electric capacity 2C4A; One end conllinear of the negative pole of the negative pole of the positive pole of diode 2D1, diode 2D2, diode 2D3 and resistance 2R5; The positive pole of diode 2D2 is electrically connected to No. 3 pin of clock chip 2IC1; No. 5 pin of clock chip 2IC1 are electrically connected to one end of electric capacity 2C5; The 3 pin conllinear of one end of the positive pole of diode 2D3, resistance 2R7 and photoelectrical coupler 2OP2; The base stage conllinear of one end of the other end of resistance 2R5, resistance 2R6 and triode Q6; The collector electrode of triode Q6 is electrically connected to one end of resistance 2R4; The other end conllinear of the base stage of the other end of resistance 2R4, triode 2Q1 and resistance 2R3; The positive pole of the collector electrode of triode 2Q1 and electrochemical capacitor 2C6 forms a common junction because of conllinear, and this common junction is the guard signal output of aforesaid overload short circuit protection module; 2 pin of photoelectrical coupler 2OP2 are the 3rd power input of aforesaid overload short circuit protection module; 2 pin of photoelectrical coupler 2OP2, one end of resistance 2R8, one end of resistance 2R8A and one end conllinear of resistance 2R8B; The other end of the other end of the other end of resistance 2R8, resistance 2R8A and resistance 2R8B forms a common junction because of conllinear, and this common junction is the second source input of aforesaid overload short circuit protection module; No. 5 pin of the other end of the other end of the other end of the other end of the positive pole of the other end of the other end of electric capacity 2C1, electric capacity 2C2, diode 2D1, resistance 2R2, electric capacity 2C3, electric capacity 2C4, electric capacity 2C4A, clock chip 2IC1, the other end of electric capacity 2C5, the emitter-base bandgap grading of the other end of resistance 2R6, triode Q6, the other end of the other end of electrochemical capacitor 2C6, resistance 2R7 form a common junction because of conllinear, and this common junction is the 4th power input of aforesaid overload short circuit protection module.

The operation principle of overload short circuit protection module: after output DC24V overload or short circuit; photoelectrical coupler 2OP2 starts conducting; its 3 pin current potential starts to uprise; the 3 pin output high level of clock chip 2IC1; by making triode Q6 conducting after diode 2D2, switching tube triode 2Q1 cut-off, makes VCC no-output; thereby make resonant circuit chip 1C1 without power supply, quit work.After overload or short circuit releasing, circuit can recover voluntarily.When output dead short circuit, the 3 pin output high level of photoelectrical coupler 2OP2, make triode Q6 conducting by diode 2D3, and switch triode 2Q1 cut-off, equally without VCC Voltage-output.

See Fig. 7, overvoltage overheat protector module is mainly comprised of resistance 2R9, resistance 2R10, resistance 2R11, three end adjustable shunt reference voltage source 2U1, electric capacity 2C7, negative tempperature coefficient thermistor RT, resistance 2R12, resistance 2R13, resistance 2R14, electric capacity 2C8, electric capacity 2C9, comparator 2U2A, electric capacity 2C10, resistance 2R19A, diode D13A, diode D13, photoelectrical coupler 2OP3, resistance 2R19, resistance 2R17 and voltage stabilizing didoe 2DZ1.In the present embodiment, it is the three end adjustable shunt reference voltage sources of TL431 that three end adjustable shunt reference voltage source 2U1 preferably adopt model; Comparator 2U2A adopts the integrated chip that model is LM258, and it has pin 1 to No. 8; Photoelectrical coupler 2OP3 adopts the photoelectrical coupler of PC817 model.

No. 8 pin of one end of resistance 2R9, comparator 2U2A, one end of electric capacity 2C10 and one end of resistance 2R19A form a common junction because of conllinear, and this common junction is first power input (marking linkage flag P12V+ in Fig. 7) of aforesaid overvoltage overheat protector module; The negative pole of voltage stabilizing didoe 2DZ1 is the second source input (marking linkage flag 24V+ in Fig. 7) of aforesaid overvoltage overheat protector module; No. 4 pin of No. 2 pin of photoelectrical coupler 2OP3, comparator 2U2A and one end of electric capacity 2C9 form a common junction because of conllinear, and this common junction is the 3rd power input of aforesaid overvoltage overheat protector module; The positive pole of the positive pole of diode D13A and diode D13 forms a common junction because of conllinear, and this common junction is the guard signal output (marking linkage flag CSS in Fig. 7) of aforesaid overvoltage overheat protector module; 2 pin of the other end of resistance 2R9, three end adjustable shunt reference voltage source 2U1, one end of resistance 2R10, one end of one end of electric capacity 2C7, resistance 2R13 and one end conllinear of negative tempperature coefficient thermistor RT; The 1 pin conllinear of one end of the other end of resistance 2R10, resistance 2R11 and three end adjustable shunt reference voltage source 2U1; No. 3 pin conllinear of the other end of one end of the other end of negative tempperature coefficient thermistor RT, resistance R 12, electric capacity 2C9 and comparator 2U2A; No. 2 pin conllinear of one end of one end of the other end of resistance 2R13, resistance 2R14, electric capacity 2C8 and comparator 2U2A; No. 1 pin of comparator 2U2A is connected with the positive pole of diode D13A by resistance 2R19A; The positive pole of diode D13 is electrically connected to No. 3 pin of photoelectrical coupler 2OP3; No. 4 pin of photoelectrical coupler 2OP3 are electrically connected to the other end of resistance 2R19; No. 1 pin of photoelectrical coupler 2OP3 is electrically connected to the other end of resistance 2R17; No. 3 pin, the other end of resistance 2R11, the other end of the other end of electric capacity 2C7, resistance 2R12, the other end of the other end of resistance 2R14, electric capacity 2C8 and the other end of electric capacity 2C10 of accurate three-terminal voltage-stabilizing source 2U1 forms a common junction because of conllinear, and this common junction is the 4th power input of the overvoltage overheat protector module of aforesaid overvoltage overheat protector module.

The operation principle of overvoltage overheat protector module: when working temperature is elevated to a certain degree, negative tempperature coefficient thermistor RT is by the 1 pin output high potential of comparator 2U2A, the CSS current potential of output is uprised, thereby resonator chip IC1 is quit work, thereby protective circuit is not damaged; When output voltage is too high when (>27V); photoelectrical coupler 2OP3 conducting; P12V+ voltage uprises the CSS voltage of output by resistance 2R19, photoelectrical coupler 2OP3 and diode D13, make equally resonator chip IC1 quit work, thereby protective circuit is not damaged.

See Fig. 8, flash of light control module is mainly comprised of diode D1, clock chip U1, field effect transistor Q1, field effect transistor Q2, voltage stabilizing didoe DZ1, triode Q3, electrochemical capacitor C1, electrochemical capacitor C2, electrochemical capacitor C3, resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, resistance R 6, resistance R 7, resistance R 8 and resistance R 9.Clock chip U1 preferably adopts the integrated chip of NE555 model, and it has pin 1 to No. 8.Field effect transistor Q1 and field effect transistor Q2 preferably adopt the high-power MOS tube of IRFP264 model.

The positive pole of diode D1 is first power input (marking linkage flag+24V in Fig. 8) of aforesaid flash of light control module; The collector electrode conllinear of one end of one end of the negative pole of diode D1, resistance R 3, resistance R 4 and triode Q3; The negative pole conllinear of the base stage of the other end of the other end of resistance R 3, resistance R 4, triode Q3 and voltage stabilizing didoe DZ1; One end conllinear of the positive pole of the emitter-base bandgap grading of triode Q3, electrochemical capacitor C3 and resistance R 8; No. 4 and No. 8 pin conllinear of one end of the other end of resistance R 8, resistance R 6 and clock chip U1; No. 7 pin conllinear of one end of the other end of resistance R 6, resistance R 9 and clock chip U1; The anodal conllinear of No. 6 pins of the other end of resistance R 9, clock chip U1 and No. 2 pins, electrochemical capacitor C2; No. 5 pins of clock chip U1 are electrically connected to one end of capacitor C 1; No. 3 pins of clock chip U1 are electrically connected to one end of resistance R 7; One end conllinear of one end of the other end of resistance R 7, resistance R 1 and resistance R 2; The other end of resistance R 1 is electrically connected to the grid of field effect transistor Q1; The other end of resistance R 2 is electrically connected to the grid of field effect transistor Q2; The drain electrode of field effect transistor Q1 is first control output end (mark f1 in Fig. 8) of aforesaid flash of light control module; The drain electrode of field effect transistor Q2 is second control output end (mark f2 in Fig. 8) of aforesaid flash of light control module; No. 1 pin of the other end of the source electrode of field effect transistor Q1, the source electrode of field effect transistor Q2, capacitor C 1, clock chip U1, the other end of electrochemical capacitor C2, the positive pole of the other end of electrochemical capacitor C3 and voltage stabilizing didoe DZ1 form a common junction because of conllinear, and this common junction is the second source input of aforesaid flash of light control module.

The operation principle of flash of light control module: it is core that flash of light control module be take the clock chip U1 of NE555 model, the square-wave signal of exporting the 2Hz of pulse from its 3 pin is supplied with the grid of field effect transistor Q1 and field effect transistor Q2, drives locomotive headlamp to glisten with the fixed frequency of setting.Field effect transistor Q1 and field effect transistor Q2 adopt the high-power MOS tube of IRFP264 model, at I _dduring=38A, conducting resistance is 0.075 Ω only, has reduced conduction loss.The choosing value of resistance R 6, resistance R 9 and capacitor C 2 that flashing rate can be according to actual needs connect by 7 pin, 6 pin and 2 pin of clock chip U1 be should give definite mutually.

(application examples)

See Fig. 9, the headlight of railroad locomotive illumination of previous embodiment and flash of light control device (aftermentioned abbreviation control device), when it uses, it is electrically connected to as figure with the left illuminator DS1 on locomotive, right illuminator DS2, the first universal seclector S1 and the second universal seclector S2: the first universal seclector S1 and the second universal seclector S2 have respectively common port, often battle and normally closed point.The first power output end of the LLC modular converter of control device (+24V power output end) is electrically connected to one end of the left illuminator DS1 of locomotive and one end of the right illuminator DS2 of locomotive; The other end of the left illuminator DS1 of locomotive is electrically connected to the common port of the first universal seclector S1; The other end of the right illuminator DS2 of locomotive is electrically connected to the common port of the second universal seclector S2; The second source output of the LLC modular converter of control device (0V output) is electrically connected to the normally closed point of the first universal seclector S1 and the second universal seclector S2; The first control output end of the flash of light control module of control device (f1 end) and the second control output end (f2 end) difference correspondence was electrically connected to the normal battle of the first universal seclector S1 and the second universal seclector S2.Control device stable output+24V power supply lights illumination for left illuminator DS1, right illuminator DS2 protection; when needs carry out flash-caution by left illuminator DS1, right illuminator DS2; stir the first universal seclector S1 and/or the second universal seclector S2; its common port and normal battle are connected, and the flash of light control module of control device is controlled left illuminator DS1 and/or right illuminator DS2 according to the frequency of the setting alarm of glistening.

Above embodiment and application examples are the explanations to the specific embodiment of the present invention; but not limitation of the present invention; person skilled in the relevant technique without departing from the spirit and scope of the present invention; can also make various conversion and variation and obtain the corresponding technical scheme being equal to, therefore all technical schemes that are equal to all should be included into scope of patent protection of the present invention.

Claims

1. headlight of railroad locomotive illumination and a flash of light control device, is characterized in that: comprise anti-interference EMI filtration module, power module, LLC modular converter, overload short circuit protection module, overvoltage overheat protector module and flash of light control module;

Described anti-interference EMI filtration module is provided with first, second, and third power input and first, second power output end; Power module is provided with first, second power input and power output end; LLC modular converter is provided with the first power input, second source input, the first power output end, second source output, overvoltage overheat protector signal input part and overload short circuit guard signal input; Overvoltage overheat protector module and overload short circuit protection module are respectively equipped with first to fourth power input and guard signal output; Flash of light control module is provided with the first power input, second source input, the first control output end and the second control output end;

2. headlight of railroad locomotive illumination according to claim 1 and flash of light control device, is characterized in that: described LLC modular converter comprises sampling bleeder circuit, resonator and accessory circuit, switch transformer circuit, current rectifying and wave filtering circuit, voltage stabilizing circuit, current sampling protective circuit and feedback circuit;

Described sampling bleeder circuit is provided with the first power end, second source end and power output end; Resonator and accessory circuit thereof are provided with the first to the 3rd power end, first signal input, secondary signal input, feedback signal input, the first current sampling signal input, the second current sampling signal input and voltage signal output end; Switch transformer circuit is provided with the first power end, second source end, the first to the 3rd output and current signal output end; Current rectifying and wave filtering circuit is provided with the first to the 3rd input, the first power output end and second source output; Voltage stabilizing circuit is provided with the first power end, second source end, first signal output and secondary signal output; Current sampling protective circuit is provided with sampled signal input, first signal output, secondary signal output and power end; Feedback circuit is provided with first signal input, secondary signal input, voltage signal output end and power end;

Sampling the first power end resonator of bleeder circuit and the first power end of accessory circuit thereof form a common junction because of conllinear, and this common junction is the first power input of described LLC modular converter; The second source end of second source end, resonator and accessory circuit thereof of sampling bleeder circuit is, the second source end of switch transformer circuit, the power end of current sampling protective circuit and the power end of feedback circuit form a common junction because of conllinear, and this common junction is the second source input of described LLC modular converter; Overvoltage overheat protector signal input part and the overload short circuit guard signal input of the LLC modular converter described in the first signal input of resonator and accessory circuit thereof and secondary signal input are respectively; The first power output end of current rectifying and wave filtering circuit and second source output are the first power output end and the second source output of described LLC modular converter;

3. headlight of railroad locomotive illumination according to claim 1 and flash of light control device, is characterized in that: described

Anti-interference EMI filtration module comprises the first protective tube F1, the second protective tube F2, piezo-resistance RV1, field effect transistor 1Q1, electric capacity 1C1, voltage-stabiliser tube 1DZ1, resistance 1R1, resistance 1R2, resistance 1R3, resistance 1R4, common mode EMI filters L1, relay J K1, negative temperature coefficient resister 1RT1, field effect transistor 1Q2, diode 1D1, resistance 1R5, resistance 1R6, resistance 1R7, voltage-stabiliser tube 1DZ2, resistance 1R8, electric capacity 1C2, electrochemical capacitor 1C3 and electrochemical capacitor 1C4; Common mode EMI filters L1 has terminals 1 to No. 4; Relay J K1 has terminals 1 to No. 5;

One end of the first described protective tube F1 is the first power input of described anti-interference EMI filtration module; One end of the second protective tube F2 is the second source input of described anti-interference EMI filtration module; No. 2 terminals conllinear of one end of one end of the other end of the first protective tube F1 and piezo-resistance RV1, resistance 1R1 and common mode EMI filters L1; Second other end of protective tube F2 is, the drain electrode conllinear of the other end of piezo-resistance RV1 and field effect transistor 1Q1; No. 1 terminals conllinear of one end of the positive pole of one end of the source electrode of field effect transistor 1Q1, electric capacity 1C1, voltage-stabiliser tube 1DZ1, resistance 1R4 and common mode EMI filters L1; One end conllinear of the other end of the negative pole of the other end of the grid of field effect transistor 1Q1, electric capacity 1C1, voltage-stabiliser tube 1DZ1, resistance 1R4 and resistance 1R3; The other end of resistance 1R3 is connected with the other end of resistance 1R1 by resistance 1R2; One end conllinear of No. 4 terminals of common mode EMI filters L1, relay J K1 No. 3 and No. 4 terminals and negative temperature coefficient resister 1RT1; No. 2 terminals of relay J K1, the negative pole of diode 1D1, one end conllinear of one end of resistance 1R5 and resistance 1R6; No. 1 terminals of relay J K1, the positive pole of diode 1D1 and the drain electrode conllinear of field effect transistor 1Q2; One end conllinear of one end of one end of the grid of field effect transistor 1Q2, resistance 1R7, resistance 1R8 and electric capacity 1C2; The other end of resistance 1R7 is electrically connected to the positive pole of voltage-stabiliser tube 1DZ2; The other end of the other end of the negative pole of voltage-stabiliser tube 1DZ2, resistance 1R5 and resistance 1R6 forms a common junction because of conllinear, and this common junction is the 3rd power input of described anti-interference EMI filtration module; No. 5 terminals of the other end of negative temperature coefficient resister 1RT1, relay J K1, the positive pole of electrochemical capacitor 1C3 and the positive pole of electrochemical capacitor 1C4 form a common junction because of conllinear, and this common junction is the first power output end of described anti-interference EMI filtration module; No. 3 terminals of common mode EMI filters L1, the source electrode of field effect transistor 1Q2, the other end of the other end of resistance 1R8, electric capacity 1C2, the negative pole of the negative pole of electrochemical capacitor 1C3 and electrochemical capacitor 1C4 form a common junction because of conllinear, and this common junction is the second source output of described anti-interference EMI filtration module.

4. headlight of railroad locomotive illumination according to claim 1 and flash of light control device, is characterized in that: described overload short circuit protection module comprises clock chip 2IC1, resistance 2R1, electric capacity 2C1, electric capacity 2C2, diode 2D1, resistance 2R2, electric capacity 2C3, electric capacity 2C4, electric capacity 2C4A, electric capacity 2C5, diode 2D2, diode 2D3, resistance 2R5, resistance 2R6, triode Q6, resistance 2R4, resistance 2R3, triode 2Q1, electrochemical capacitor 2C6, resistance 2R7, photoelectrical coupler 2OP2, resistance 2R8, resistance 2R8A and resistance 2R8B; Described clock chip 2IC1 is the integrated chip of NE555 model, and it has pin 1 to No. 8; Photoelectrical coupler 2OP2 is the photoelectrical coupler of PC817 model;

No. 4 of described clock chip 2IC1 and No. 8 pin, one end of resistance 2R1, the emitter-base bandgap grading of one end of electric capacity 2C1, triode 2Q1 are, 4 pin of one end of resistance 2R3 and photoelectrical coupler 2OP2 form a common junction because of conllinear, and this common junction is the first power input of described overload short circuit protection module; One end conllinear of the other end of resistance 2R1, clock chip 2IC1 No. 7 and No. 6 pin and electric capacity 2C2; No. 2 pin of clock chip 2IC1, the negative pole of diode 2D1, one end conllinear of one end of one end of resistance 2R2, electric capacity 2C1, electric capacity 2C3, electric capacity 2C4 and electric capacity 2C4A; One end conllinear of the negative pole of the negative pole of the positive pole of diode 2D1, diode 2D2, diode 2D3 and resistance 2R5; The positive pole of diode 2D2 is electrically connected to No. 3 pin of clock chip 2IC1; No. 5 pin of clock chip 2IC1 are electrically connected to one end of electric capacity 2C5; The 3 pin conllinear of one end of the positive pole of diode 2D3, resistance 2R7 and photoelectrical coupler 2OP2; The base stage conllinear of one end of the other end of resistance 2R5, resistance 2R6 and triode Q6; The collector electrode of triode Q6 is electrically connected to one end of resistance 2R4; The other end conllinear of the base stage of the other end of resistance 2R4, triode 2Q1 and resistance 2R3; The positive pole of the collector electrode of triode 2Q1 and electrochemical capacitor 2C6 forms a common junction because of conllinear, and this common junction is the guard signal output of described overload short circuit protection module; 2 pin of photoelectrical coupler 2OP2 are the 3rd power input of described overload short circuit protection module; 2 pin of photoelectrical coupler 2OP2, one end of resistance 2R8, one end of resistance 2R8A and one end conllinear of resistance 2R8B; The other end of the other end of the other end of resistance 2R8, resistance 2R8A and resistance 2R8B forms a common junction because of conllinear, and this common junction is the second source input of described overload short circuit protection module; No. 5 pin of the other end of the other end of the other end of the other end of the positive pole of the other end of the other end of electric capacity 2C1, electric capacity 2C2, diode 2D1, resistance 2R2, electric capacity 2C3, electric capacity 2C4, electric capacity 2C4A, clock chip 2IC1, the other end of electric capacity 2C5, the emitter-base bandgap grading of the other end of resistance 2R6, triode Q6, the other end of the other end of electrochemical capacitor 2C6, resistance 2R7 form a common junction because of conllinear, and this common junction is the 4th power input of described overload short circuit protection module.

5. headlight of railroad locomotive illumination according to claim 1 and flash of light control device, is characterized in that: described overvoltage overheat protector module comprises resistance 2R9, resistance 2R10, resistance 2R11, three end adjustable shunt reference voltage source 2U1, electric capacity 2C7, negative tempperature coefficient thermistor RT, resistance 2R12, resistance 2R13, resistance 2R14, electric capacity 2C8, electric capacity 2C9, comparator 2U2A, electric capacity 2C10, resistance 2R19A, diode D13A, diode D13, photoelectrical coupler 2OP3, resistance 2R19, resistance 2R17 and voltage stabilizing didoe 2DZ1; Three described end adjustable shunt reference voltage source 2U1 are three end adjustable shunt reference voltage sources of TL431 model; Comparator 2U2A is the integrated chip of LM258 model, and it has pin 1 to No. 8; Photoelectrical coupler 2OP3 is the photoelectrical coupler of PC817 model;

No. 8 pin of one end of described resistance 2R9, comparator 2U2A, one end of electric capacity 2C10 and one end of resistance 2R19A form a common junction because of conllinear, and this common junction is the first power input of described overvoltage overheat protector module; The negative pole of voltage stabilizing didoe 2DZ1 is the second source input of described overvoltage overheat protector module; No. 4 pin of No. 2 pin of photoelectrical coupler 2OP3, comparator 2U2A and one end of electric capacity 2C9 form a common junction because of conllinear, and this common junction is the 3rd power input of described overvoltage overheat protector module; The positive pole of the positive pole of diode D13A and diode D13 forms a common junction because of conllinear, and this common junction is the guard signal output of described overvoltage overheat protector module; 2 pin of the other end of resistance 2R9, three end adjustable shunt reference voltage source 2U1, one end of resistance 2R10, one end of one end of electric capacity 2C7, resistance 2R13 and one end conllinear of negative tempperature coefficient thermistor RT; The 1 pin conllinear of one end of the other end of resistance 2R10, resistance 2R11 and three end adjustable shunt reference voltage source 2U1; No. 3 pin conllinear of the other end of one end of the other end of negative tempperature coefficient thermistor RT, resistance R 12, electric capacity 2C9 and comparator 2U2A; No. 2 pin conllinear of one end of one end of the other end of resistance 2R13, resistance 2R14, electric capacity 2C8 and comparator 2U2A; No. 1 pin of comparator 2U2A is connected with the positive pole of diode D13A by resistance 2R19A; The positive pole of diode D13 is electrically connected to No. 3 pin of photoelectrical coupler 2OP3; No. 4 pin of photoelectrical coupler 2OP3 are electrically connected to the other end of resistance 2R19; No. 1 pin of photoelectrical coupler 2OP3 is electrically connected to the other end of resistance 2R17; No. 3 pin, the other end of resistance 2R11, the other end of the other end of electric capacity 2C7, resistance 2R12, the other end of the other end of resistance 2R14, electric capacity 2C8 and the other end of electric capacity 2C10 of accurate three-terminal voltage-stabilizing source 2U1 forms a common junction because of conllinear, and this common junction is the 4th power input of the overvoltage overheat protector module of described overvoltage overheat protector module.

6. headlight of railroad locomotive illumination according to claim 1 and flash of light control device, is characterized in that: described flash of light control module comprises diode D1, clock chip U1, field effect transistor Q1, field effect transistor Q2, voltage stabilizing didoe DZ1, triode Q3, electrochemical capacitor C1, electrochemical capacitor C2, electrochemical capacitor C3, resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, resistance R 6, resistance R 7, resistance R 8 and resistance R 9; Clock chip U1 is the integrated chip of NE555 model, and it has pin 1 to No. 8; Field effect transistor Q1 and field effect transistor Q2 are the high-power MOS tube of IRFP264 model;

The positive pole of described diode D1 is the first power input of described flash of light control module; The collector electrode conllinear of one end of one end of the negative pole of diode D1, resistance R 3, resistance R 4 and triode Q3; The negative pole conllinear of the base stage of the other end of the other end of resistance R 3, resistance R 4, triode Q3 and voltage stabilizing didoe DZ1; One end conllinear of the positive pole of the emitter-base bandgap grading of triode Q3, electrochemical capacitor C3 and resistance R 8; No. 4 and No. 8 pin conllinear of one end of the other end of resistance R 8, resistance R 6 and clock chip U1; No. 7 pin conllinear of one end of the other end of resistance R 6, resistance R 9 and clock chip U1; The anodal conllinear of No. 6 pins of the other end of resistance R 9, clock chip U1 and No. 2 pins, electrochemical capacitor C2; No. 5 pins of clock chip U1 are electrically connected to one end of capacitor C 1; No. 3 pins of clock chip U1 are electrically connected to one end of resistance R 7; One end conllinear of one end of the other end of resistance R 7, resistance R 1 and resistance R 2; The other end of resistance R 1 is electrically connected to the grid of field effect transistor Q1; The other end of resistance R 2 is electrically connected to the grid of field effect transistor Q2; The drain electrode of field effect transistor Q1 is the first control output end of described flash of light control module; The drain electrode of field effect transistor Q2 is the second control output end of described flash of light control module; No. 1 pin of the other end of the source electrode of field effect transistor Q1, the source electrode of field effect transistor Q2, capacitor C 1, clock chip U1, the other end of electrochemical capacitor C2, the positive pole of the other end of electrochemical capacitor C3 and voltage stabilizing didoe DZ1 form a common junction because of conllinear, and this common junction is the second source input of described flash of light control module.

7. headlight of railroad locomotive illumination according to claim 2 and flash of light control device, is characterized in that: the resonator of described LLC modular converter and accessory circuit thereof comprise resonator chip IC1, electric capacity 1C6, electric capacity 1C10, voltage-stabiliser tube 1DZ3, electric capacity 1C11, electric capacity 1C12, diode 1D2, resistance 1R15, electric capacity 1C13, voltage-stabiliser tube 1DZ4, electric capacity 1C16, electric capacity 1C17, resistance 1R18, diode 1D3, resistance 1R16, resistance 1R17, field effect transistor 1Q3, resistance 1R19, diode 1D4, resistance 1R20, resistance 1R21 and field effect transistor 1Q4; Resonator chip IC1 is the integrated chip of SSC9522S model, and it has pin 1 to No. 18;

No. 1 pin of resonator chip IC1 is described resonator and the 3rd power end of accessory circuit thereof; No. 2 pin of resonator chip IC1 and one end of electric capacity 1C6 form a common junction because of conllinear, this common junction is described resonator and the secondary signal input of accessory circuit thereof, also the i.e. overload short circuit guard signal input of described LLC modular converter; No. 3 pin of resonator chip IC1 are described resonator and the feedback signal input of accessory circuit thereof; No. 5 pin of resonator chip IC1, one end of electric capacity 1C10 and the negative pole of voltage-stabiliser tube 1DZ3 form a common junction because of conllinear, and this common junction is described resonator and the first signal input of accessory circuit thereof; No. 6 pin of resonator chip IC1 are described resonator and the first current sampling signal input of accessory circuit thereof; No. 7 pin of resonator chip IC1 and one end of electric capacity 1C11 form a common junction because of conllinear, and this common junction is described resonator and the second current sampling signal input of accessory circuit thereof; No. 8 pin of resonator chip IC1, one end of electric capacity 1C12 and the anodal conllinear of diode 1D2; The negative pole of diode 1D2 is electrically connected to one end of resistance 1R15; No. 14 pin conllinear of the negative pole of one end of the other end of resistance 1R15, electric capacity 1C13, voltage-stabiliser tube 1DZ4 and resonator chip IC1; No. 9 pin of resonator chip IC1 are electrically connected to one end of electric capacity 1C17; The other end of electric capacity 1C17 is electrically connected to one end of electric capacity 1C16; No. 15 pin of the other end of the positive pole of the other end of electric capacity 1C16, voltage-stabiliser tube 1DZ4, electric capacity 1C13 and resonator chip IC1 form a common junction because of conllinear, and this common junction is described resonator and the voltage signal output end of accessory circuit thereof; No. 11 pin of resonator chip IC1, one end of resistance 1R19 and one end conllinear of resistance 1R20; The other end of resistance IR19 is connected with the negative electricity of diode 1D4; One end conllinear of the other end of the positive pole of diode 1D4, resistance 1R20, the grid of field effect transistor 1Q4 and resistance 1R21; The source electrode conllinear of one end of the drain electrode of field effect transistor 1Q4, resistance 1R18 and field effect transistor 1Q3; The grid conllinear of one end of the positive pole of the other end of resistance IR18, diode 1D3, resistance 1R17 and field effect transistor 1Q3; The negative pole of diode 1D3 is electrically connected to one end of resistance IR16; No. 16 pin conllinear of the other end of the other end of resistance IR16, resistance 1R17 and resonator chip IC1; The drain electrode of field effect transistor 1Q3 is described resonator and the first power end of accessory circuit thereof; No. 4 pin of resonator chip IC1 and No. 10 pin, the other end of electric capacity 1C6, the positive pole of the other end of electric capacity 1C10, voltage-stabiliser tube 1DZ3, the other end of the other end of electric capacity 1C11, electric capacity 1C12, the source electrode of the other end of resistance 1R21 and field effect transistor 1Q4 forms a common junction because of conllinear, this common junction is described resonator and the second source end of accessory circuit thereof.

8. headlight of railroad locomotive illumination according to claim 2 and flash of light control device, is characterized in that: the current rectifying and wave filtering circuit of described LLC modular converter comprises Schottky barrier diodes 1D5, Schottky barrier diodes 1D6, electrochemical capacitor 1C22, electrochemical capacitor 1C23, electrochemical capacitor 1C24, inductance 1L3, inductance 1L4, voltage stabilizing didoe IDZ5, ground capacity CY2 and ground capacity CY3;

The positive pole of Schottky barrier diodes 1D5 is the first input end of described current rectifying and wave filtering circuit; The positive pole of Schottky barrier diodes 1D6 is the second input of described current rectifying and wave filtering circuit; One end conllinear of the positive pole of the positive pole of the negative pole of the negative pole of Schottky barrier diodes 1D5, Schottky barrier diodes 1D6, electrochemical capacitor 1C22, electrochemical capacitor 1C23 and inductance 1L3; One end of the negative pole of the negative pole of electrochemical capacitor 1C22, electrochemical capacitor 1C23 and inductance 1L4 forms a common junction because of conllinear, and this common junction is the 3rd input of described current rectifying and wave filtering circuit; One end of the negative pole of the positive pole of the other end of inductance 1L3, electrochemical capacitor 1C24, voltage stabilizing didoe IDZ5 and ground capacity CY2 forms a common junction because of conllinear, and this common junction is the first power output end of described current rectifying and wave filtering circuit; One end of the positive pole of the negative pole of the other end of inductance 1L4, electrochemical capacitor 1C24, voltage stabilizing didoe IDZ5 and ground capacity CY3 forms a common junction because of conllinear, and this common junction is the second source output of described current rectifying and wave filtering circuit; Another termination the earth of the other end of ground capacity CY2 and ground capacity CY3.

9. headlight of railroad locomotive illumination according to claim 2 and flash of light control device, is characterized in that: the voltage stabilizing circuit of described LLC modular converter comprises three end adjustable shunt reference voltage source 1U1, resistance 1R25, resistance 1R26, resistance 1R27, variable resistor VR1, electric capacity 1C20, electric capacity 1C21, resistance 1R30, resistance 1R29, resistance 1R28, resistance 1R31, resistance 1R32 and LED 1; Three end adjustable shunt reference voltage source 1U1 are three end adjustable shunt reference voltage sources of TL431 model;

One end of described resistance 1R25, one end of resistance 1R28, one end of resistance 1R31 and one end of resistance 1R32 form a common junction because of conllinear, and this common junction is the first power end of described voltage stabilizing circuit; One end of the other end of resistance 1R28 and resistance 1R29 forms a common junction because of conllinear, and this common junction is the first signal output of described voltage stabilizing circuit; The other end of resistance 1R25 is electrically connected to one end of resistance 1R26; The reference utmost point conllinear of one end of one end of one end of the other end of resistance 1R26, resistance 1R27, electric capacity 1C20, electric capacity 1C21, three end adjustable shunt reference voltage source 1U1; Fixed terminals of the other end of resistance 1R27 and variable resistor VR1 and slip terminals conllinear; The other end of electric capacity 1C20 is electrically connected to one end of resistance 1R30; The other end of the other end of resistance 1R30, electric capacity 1C21, three negative poles of end adjustable shunt reference voltage source 1U1 and the other end of resistance 1R29 form a common junction because of conllinear, and this common junction is the secondary signal output of described voltage stabilizing circuit; The anodal conllinear of the other end of the other end of resistance 1R31, resistance 1R32 and LED 1; The negative pole of LED 1, three positive poles of end adjustable shunt reference voltage source 1U1 and another fixed terminals of variable resistor VR1 form a common junction because of conllinear, and this common junction is the second source end of described voltage stabilizing circuit.

10. headlight of railroad locomotive illumination according to claim 2 and flash of light control device, is characterized in that: the current sampling protective circuit of described LLC modular converter comprises electric capacity 1C14, resistance 1R22, resistance 1R23, resistance 1R24 and electric capacity 1C15;

One end of electric capacity 1C14 is the sampled signal input of described current sampling protective circuit; One end of one end of one end of the other end of electric capacity 1C14, resistance 1R22, resistance 1R23 and resistance 1R24 forms a common junction because of conllinear, and this common junction is the secondary signal output of described current sampling protective circuit; One end of the other end of resistance 1R24 and electric capacity 1C15 forms a common junction because of conllinear, and this common junction is the first signal output of described current sampling protective circuit; The other end of the other end of the other end of resistance 1R22, resistance 1R23 and electric capacity 1C15 forms a common junction because of conllinear, and this common junction is the power end of described current sampling protective circuit;

The feedback circuit of described LLC modular converter comprises resistance 1R13, electric capacity 1C7, photoelectrical coupler 2OP1, resistance 1R14, electric capacity 1C8 and electric capacity 1C9; Photoelectrical coupler 2OP1 is the photoelectrical coupler of PC817 model, and it has pin 1 to No. 4;

No. 1 pin of photoelectrical coupler 2OP1 is the first signal input of described feedback circuit, and No. 2 pin of photoelectrical coupler 2OP1 are the secondary signal input of described feedback circuit; No. 4 pin of photoelectrical coupler 2OP1, one end of resistance 1R13 and one end conllinear of electric capacity 1C7; One end of one end of the other end of resistance 1R13, resistance 1R14 and electric capacity 1C9 forms a common junction because of conllinear, and this common junction is the voltage signal output end of described feedback circuit; The other end of resistance 1R14 is electrically connected to one end of electric capacity 1C8; No. 3 pin of the other end of the other end of the other end of electric capacity 1C8, electric capacity 1C9, electric capacity 1C7 and photoelectrical coupler 2OP1 form a common junction because of conllinear, and this common junction is the power end of described feedback circuit.