CN207702143U - A kind of LED railway signals spotlight source device - Google Patents
A kind of LED railway signals spotlight source device Download PDFInfo
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- CN207702143U CN207702143U CN201721333732.8U CN201721333732U CN207702143U CN 207702143 U CN207702143 U CN 207702143U CN 201721333732 U CN201721333732 U CN 201721333732U CN 207702143 U CN207702143 U CN 207702143U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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Abstract
A kind of LED railway signals spotlight source device is by cooling fin（1）, LED light tube chip（2）, LED luminescence chip substrates（3）, circuit board 1（4）, circuit board 2（5）, shell（6）, prefocus plate（7）, major-minor silk conversion testing switch (8）, main silk connecting line（9）, paranema connecting line（10）, current compensation circuit（11）, current detection circuit（12）, driving and control circuit（13）, constant current and lamp circuit (14), major-minor silk switch relay (15) and form, be coupled for electric connection mode between each component.Can reduce the maintenance of railway signal workers using LED railway signals point light source, LED railway signal point light sources have many advantages, such as long-life, low-power consumption, can be the railway system save electric power.Capacitive current compensation technology has especially been used in circuit, can play the current requirements for not only having met that H18 relays were attracted in railway system room, but also plays the role of saving electric power.
Description
Technical field
The present invention is a kind of LED light source for railway color light signal mechanism, uses great power LED chip of luminescent tube,
Novel switch constant current technology, current compensation technology, the multinomial modern electronic technology such as intelligent control.
Background technology
With the progress of LED luminescence technologies, LED illumination has obtained universal application.The characteristics of its high-light long-life
It has been widely recognized, also begins to promote and apply in railway signal lighting system.Railway signal aspects and indication system is to railway row
Vehicle plays safely important safety effect.Currently, Railway Site signal lighting system is aobvious as signal using incandescent lamp bulb
Show, it is an incandescent lamp bulb being made of two groups of filaments of major-minor, has stronger anti-interference ability, design simple and reliable.
Lighting means of power exchanges 13V, and incandescent lamp bulb power consumption is 25W.It uses main filament first when operating, works as master
Lighting supply unit automatically switches to auxiliary filament work when filament failure.
LED light tube chip has the advantages that performance stabilization, small power consumption, energy saving, long-life.But LED railways how to be made to believe
Number spotlight source device reaches electric current when incandescent lamp bulb work, and existing spotlight source device is enable to meet original lighting power supply dress
It sets, makes indoor filament relay work, and do not change original lighting system circuit, this is all the crucial technology for needing to solve
Problem.When generally using LED light source in addition to needing to change LED bulb, it is necessary to be replaced with dedicated LED point lamp supply unit
Original lighting supply unit, this for China is completed tens thousand of semaphores being currently running, the workload of replacement and
Expense is all very huge.Thus invention can directly replace the LED railway signal point light sources dress of original railway signal incandescent lamp bulb
It sets just very necessary.The present apparatus varies without and adjusts any structure of original railway system and circuit ensures that former railway
The normal work of signal lighting system.
Utility model content
In order to realize above-mentioned target, present invention employs integral structures.The structure of the present apparatus and the fixed-focus of incandescent lamp bulb
Disk is identical with luminous point, can directly be replaced with railway signal incandescent lamp bulb.LED light tube chip heat is dissipated by outside heat sink
Heat, it is ensured that the operating temperature of chip does not overheat.Multinomial advanced electronic technology is used, such as：Switch constant-current source circuit technology,
Current compensation circuit technology, detection control circuit technology etc..Structure drawing of device is shown in Fig. 1：LED railway signal spotlight source devices explode
Figure, Fig. 2：LED railway signal spotlight source device Facad structures figure, Fig. 3：LED railway signal spotlight source device backside structure figures.
, a kind of LED railway signals spotlight source device, it is characterized in that：Signal spotlight source device is by cooling fin（1）, LED shine
Tube chip（2）, LED luminescence chip substrates（3）, circuit board 1（4）, circuit board 2（5）, shell（6）, prefocus plate（7）, major-minor silk turn
Change test switch (8）, main silk connecting line（9）, paranema connecting line（10）, current compensation circuit（11）, current detection circuit（12）,
Driving and control circuit（13）, constant current and lamp circuit (14), major-minor silk switch relay (15) and form；It is between each component
Electric connection mode is coupled；The current compensation circuit is the voltage input end electric current in parallel in LED point light source device
Compensating module, current compensation circuit are made of two diodes of tetra- electrolytic capacitors of C1, C2, C3, C4 and V1, V2；The electricity
Current detection circuit is to aim at detection size of current and set, and selects high-performance, anti-high ripple, the ruby capacitance of long-life, has
It is 30000 hours to imitate the working time, the size of current of the electric current of detection compensation in real time；The driving and control circuit（13）It is
The central processing unit of LED point light source, it is made of control circuit chip STC15W404AS and driving chip ULN2003A；Driving
And control circuit is the central processing unit of LED point light source, it is by control circuit chip STC15W404AS and driving chip
ULN2003A is formed.Fundamental diagram is shown in Fig. 4：LED railway signal spotlight source device fundamental diagrams.
Cooling fin：Since LED light tube uses high-power light-emitting pipe, certain heat will produce at work, to protect
LED light tube is without damage exports the heat of luminous tube by cooling fin for card.
LED light tube chip：Using import high-power light-emitting pipe, have the characteristics that luminous intensity height, long lifespan.
LED luminescence chip substrates：LED light tube chip is fixed on substrate, will be hot by the connection of substrate and cooling fin
Amount export.
Circuit board：It is divided into circuit board 1（4）, circuit board 2（5）, circuit board is the core of LED railway signal spotlight source devices,
It has the function of to control the main silk of LED light tube point or paranema have constant current function, has to ensure that interior H18 relays are inhaled
The electric current compensation function risen has the function of to detect electric current and drive control etc..
Current compensation circuit：LED chip shines very power saving, and power consumption is only 1/10 or so of former incandescent lamp bulb.It is such as not powered
Compensation circuit is flowed, being not achieved at all can not also make lighting supply unit primary side current reach required value, to cause railway to believe
Number lighting system cisco unity malfunction.In order to solve this problem, one in parallel in the voltage input end of LED point light source device
Current compensation module, increased reactive current meet the requirement of indoor filament relay energized current value.Due to increased
It is reactive current, does not will produce actual power consumption, fully play energy-saving effect.
LED railway signal spotlight source device operation principles：
Silk terminal, paranema terminal, public terminal based on the LED railway signal spotlight source device connecting terminals difference,
Access three terminals of printed board are respectively to meet origin lamp supply unit ZS, meet origin lamp supply unit FS, connect origin lamp power supply dress
Set G；Due to relay J1 line packets when upper（J1-1）Not it is electric, printed board line power is by lighting supply unit paranema（FS）With
Lighting supply unit common end（G）Forming circuit power supply.Control circuit detect rectification after 13V power supply power supplies it is normal after, continue
It detects the main silk of LED bulb or whether paranema is normal, such as main silk normal control relay line packet（J1-1）Electric, J1 relays at this time
Normally opened contact is connected, and printed circuit board is by the main silk of supply unit（ZS）With lighting supply unit common end（G）Forming circuit power supply.
Control circuit controls relay line packet（J2-2）It is electric, J2 relay normally open contacts are connected at this time, compensation circuit access main silk with
In public end loop, the main silk end of lighting supply unit just obtains stable current compensation, ensure that indoor H18 relays are reliably inhaled
It rises；Such as main silk fracture of wire, control circuit control relay line packet（J1-1）Dead electricity, at this time J1 relay normally closed contacts connection, printing
Plate circuit is by supply unit paranema（FS）With lighting supply unit common end（G）Forming circuit power supply, control circuit control relay
Device line packet（J2-2）Must be electric, J2 relay normally open contacts are connected at this time, and compensation circuit accesses in paranema and public end loop, lighting
The main silk end of supply unit just obtains stable current compensation, ensure that indoor H18 relays reliably pick up.
The current compensation circuit of the LED railway signals spotlight source device by tetra- electrolytic capacitors of C1, C2, C3, C4 and V1,
Two diode compositions of V2, it to be direct current by diode-isolated, such half-wave that electrolytic capacitor is used in alternating current circuit, institute
It will not be damaged with electrolytic capacitor；When main silk AC power 13V positive half-waves work, electric current flows through C1, C3 and V2 so that C1 and C3
Rapid charging, C2 and C4 discharge rapidly, and electric current flows through C2, C4 and V1 when main silk AC power 13V bears half-wave so that C2
It charging rapidly with C4, C1 and C3 discharge rapidly, because electrolytic capacitor C1, C2, C3, C4 are in positive charge negative sense and discharge always,
Component is injury-free when ensure that alternating current circuit work；Pass through the charge and discharge of C1, C2, C3, C4 electrolytic capacitor simultaneously so that return
The quantity of electric charge increases in road, thus electric current also increases, and the size of the quantity of electric charge is determined by capacitance size, and 1000 μ F is selected to add
It is 1200 μ F that 200 μ F capacitances, which are constituted, by adjusting lighting supply unit tap voltage, it will be able to ensure that primary side current reaches
150mA meets interior H18 relays and reliably picks up.
The current compensation detection circuit of the LED railway signals spotlight source device：Current detection circuit is to aim at detection electricity
Stream size and set, it is ensured that compensating electric capacity reliably working in circuit, when LED point light source in the long-term use, due to capacitance
Work long hours, quick charge and discharge can cause the volumetric properties of capacitance to be declined, so select high-performance, anti-high ripple,
The ruby capacitance of long-life, the effective time is 30000 hours, even if still taking the hand of current detecting in this way
Section, the size of current of the electric current of detection compensation in real time；When capacitance is declined, threshold is arranged in detection current circuit：Once
When side is 120mA, rear class control circuit allows J1 relay line packet J1-1 dead electricity, J1 relays to be in paranema state, control simultaneously
LED bulb switchs to paranema, and lighting supply unit starts to alarm, and alerting signal work replaces spotlight source device；Capacitance again under
When drop, when detection circuit detects that primary side current is 100mA, J2 relays is controlled, allow J2 relay line packet J2-1 dead electricity, are made
J2 relay normally closed contacts are connected, and current compensation is cut off.Control circuit allows LED bulb to be in blackout state simultaneously, allows indoor H18
Relay is reliably fallen, and ensure that the safety that railway signal light bulb uses.
The U5 chips are the sensing chips of special test electric current, and the size of circuital current is converted into voltage signal,
Corresponding AC signal is taken out by capacitance C11 isolation capacitances, then is amplified by U6 chips, faint voltage can be believed
In the range of number being amplified to rear class control circuit and capable of identifying, AC signal is become by the filtering of D5 diodes and C13 capacitances
For direct current signal, then by R1 and R2 divider resistances, the stable DC signal that can be determined that signal magnitude is just obtained, after convenient
Grade control circuit judges processing.
The driving of the LED railway signals spotlight source device and control circuit：It is the central processing unit of LED point light source.It
It is made of control circuit chip STC15W404AS and driving chip ULN2003A, all analog quantity informations and controlled quentity controlled variable information
It is measured by them and is acquired.Control circuit chip STC15W404AS detections supply voltage, compensation electric current, LED chip major-minor
Filament voltage, these types of information are analog quantity, and judgement is compared according to the threshold of the size of information content acquisition and program setting
And then it is the main silk of point or paranema to control driving chip, is attracted or disconnects to control J1 and J2 relays.
The constant current of the LED railway signals spotlight source device and lamp circuit：Since LED light emitting diodes are that one kind is partly led
Body material, it is more sensitive to the environment temperature of work, it is easily damaged at high temperature, often temperature more high current will be bigger,
Electric current is bigger and temperature can be accelerated to increase and damage.Since the present apparatus is mounted in signaling gear, mechanism lamp house volume
Small, four sides seals, and radiating condition is very poor, thus devises switching mode constant-current source circuit, and the transistor of adjustment is in switch shape
State will not generate extra heat in addition to conducting is just off, be the wounds such as LED chip, electrolytic capacitor, diode, integrated circuit
Suitable working environment is made.
The constant current of the LED railway signals spotlight source device and lamp circuit：It is by great power LED luminous tube light bulb and U4
Constant-current source and peripheral circuit inductance, capacitance, diode and sample resistance composition, the luminous intensity of luminous tube is determined by electric current
, it provides 1.25V constant voltages inside constant-current source AP1501-50, selects 4.7 Ω of sample resistance, ensure that luminous tube has perseverance
Fixed 260mA electric currents ensure that the luminous intensity of luminous tube is not impacted with the height of voltage.
The LED railway signals spotlight source device shell（6）：It is the integrated design, with prefocus plate（7）Major-minor silk after connection
Position and original railway system in major-minor silk height always, do not influence to focus；Shell（6）, prefocus plate（7）, major-minor silk turn
Change test switch (8）, main silk connecting line（9）, paranema connecting line（10）Composition.
The LED railway signals spotlight source device prefocus plate（7）：Prefocus plate（7）It is consistent with railway original system prefocus plate,
It can be directly loadable into lamp holder.
The major-minor silk conversion testing switch (8 of the LED railway signals spotlight source device）：It is regular for convenience of railway signal workers
The quality of LED railway signal point light sources is detected, major-minor silk conversion testing is provided with hereby and switchs (8）, flicking switch LED light tube
Main silk switchs to paranema, lighting supply unit signaling.
The main silk connecting line of LED railway signals spotlight source device（9）, paranema connecting line（10）：Due to the reed of lamp holder
Sometimes contact bad, ad hoc main silk, paranema connecting line are separately connected main silk, paranema binding post, can prevent the bad shadow of switch jaw contact
Acoustic system works
The LED railway signals spotlight source device circuit board course of work is such：It is public by lamp light source apparatus
End, main filament terminals are powered to LED point light source device, pass through the rectifier bridge and electrolysis electricity of diode D1, D2, D3, D4 composition
Hold the DC voltage that C4, C5, C6 are filtered into exchange integer 16V, switch voltage-stabilizing integrated circuit U4, U1 work.Microcontroller powers on
Afterwards, start to execute blas：Allow the 4th feet of microcontroller U2 to become low level first, using 3 feet of drive integrated circult U3,
J2 relays are made to be attracted by 15 feet output low level after 14 feet, the progress paraphase of 2 feet；By V1, V2, C1, C2, C3, C4 group after actuation
At current compensation circuit start to work, the 7th foot of the Hall current sensor U5 in circuit that at this moment connects just output with
The directly proportional voltage signal of electric current, voltage signal are added to by capacitance C11 on operational amplifier U6, by 1 foot after its amplification
Output；The signal of output obtains a DC voltage that can represent compensation size of current after charging again to C13 via D5, this electricity
Pressure by being added to 1 foot of microcontroller U2 after resistance R1, R2 partial pressure, compensates current measurement again；When the result of measurement is less than setting
Normal value, then it represents that supply voltage is too low or compensation circuit fault, spotlight source device cannot work；When the result of measurement is just
5th foot of constant value, microcontroller U2 exports high level, then accesses 1 foot of drive integrated circult U3, and 16 feet output low level makes J1
It is attracted；The 12nd foot of microcontroller U2 becomes high level and is added on the grid of field-effect tube Q1, and main silk LED chip is working properly；It is single
19 feet of piece machine U2 check the operating voltage of main silk by resistance R3, R4, due to being that its normal voltage of constant current-supplying such as chip must
It is scheduled in normal setting range, measuring mouth voltage will be more than or less than normal setting value the case where if any circuit break and short circuit.When
Voltage value main silk of spotlight source device in normal setting range is working properly, when voltage value is not in normal range (NR), indicates main silk
LED is faulty, and the 12nd foot of microcontroller U2 becomes low level and closes main silk field-effect tube Q1, and the 11st feet of U2 become high level opening
The 5th foot of paranema field-effect tube Q2, U2 become low level, so that 16 feet of U3 is become high level release J1 relays, change by lighting
Supply unit paranema end powers；Spotlight source device delivers the information of the main silk failure of chip of LED, point to lighting supply unit simultaneously
The main silk no current of lamp supply unit, paranema generate electric current；Whether just paranema operating voltage is checked by the 19th foot of microcontroller U2
Often, indicate that paranema is working properly in normal range (NR) when measuring mouth voltage；When measuring mouth voltage is not in normal range (NR), microcontroller
The 11st foot of U2 also becomes low level, and the 4th foot of closing paranema field-effect tube Q2, microcontroller U2 also become high level to be made by U3
J2 relays discharge, and cut-out compensation circuit compensates current vanishes, and at this moment spotlight source device is in blackout state, that is, spotlight source device
Damage.
A kind of LED railway signals spotlight source device is by cooling fin（1）, LED light tube chip（2）, LED luminescence chip substrates
（3）, circuit board 1（4）, circuit board 2（5）, shell（6）, prefocus plate（7）, major-minor silk conversion testing switch (8）, main silk connecting line
（9）, paranema connecting line（10）, current compensation circuit（11）, current detection circuit（12）, driving and control circuit（13）, constant current
With lamp circuit (14), major-minor silk switches relay (15) and forms, and with integrated design, small, plug is convenient, can be direct
The features such as replacing incandescent lamp bulb in the existing railway system.The maintenance of railway signal workers can be reduced using LED railway signals point light source
Amount, LED railway signal point light sources have many advantages, such as long-life, low-power consumption, can be that the railway system saves electric power.Especially make in circuit
With capacitive current compensation technology, this technology did not used in railway signal light bulb system at home, can play and both meet iron
The current requirements that H18 relays are attracted in the system chambers of road, and play the role of saving electric power.
Description of the drawings：
Fig. 1 is：LED railway signal spotlight source device explosive views, concrete composition part are as follows：
1, housing fins, 2, LED light tube chip, 3, LED luminescence chip substrates, 4, circuit board 1,5, circuit board 2,6,
Shell, 7, prefocus plate,
Fig. 2 is：LED railway signal spotlight source device Facad structure figures, concrete composition part are as follows：
2, LED light tube chip, 9, main silk connecting line, 10, paranema connecting line
Fig. 3 is：LED railway signal spotlight source device backside structure figures, concrete composition part are as follows：
8, major-minor silk conversion testing switchs, and 9, main silk connecting line, 10, paranema connecting line
Fig. 4 is：LED railway signal spotlight source device fundamental diagrams, concrete composition part are as follows：
Fig. 5 is：Current compensation circuit figure, concrete composition part are as follows： J1-J2:Relay, model：JQC-3FF/012-
1ZS；D1-D4:Diode, model：IN4007；V1-V2:Diode, model：IN5819；C1-C2:Electrolytic capacitor, model：
35V/1000μF；C3-C4:Electrolytic capacitor, model：35V/200μF；J1-1\J2-1:Relay line packet control terminal
Fig. 6 is：Current compensation and detection circuit figure, concrete composition part are as follows：J2:Relay, model：JQC-3FF/
012-1ZS；V1-V2:Diode, model：IN5819；C1-C2:Electrolytic capacitor, model：35V/1000μ f；C3-C4:Electrolysis electricity
Hold, model：35V/200μF；J2-1:Relay line packet control terminal；U5:Current detecting chip, model ACS712；C10:Only stone electricity
Hold, model 102 (1nF)；C11:Monolithic capacitor, 22 μ F of model；C12:Monolithic capacitor, model 104 (0.1 μ F)；C13:Electrolysis electricity
Hold 35V/100 μ F；R8:Resistance 1k, R9:Resistance 10k, R10:Resistance 6.2k, R1-R2:Resistance 1k；D5:Diode IN4148；
U6:Amplifier LM358
Fig. 7 is：Driving and electric operation control circuit figure, concrete composition part are as follows：U2：Control chip, model：STC15W404AS；
U3:Driving chip, model：ULN2003A.
Fig. 8 is：Constant current and lamp circuit figure, concrete composition part are as follows：
LED bulb：High-power light-emitting pipe is made of four light-emitting LED light bulbs, and V1 and V2 series connection are decided silk, V3 and V4 strings
Connection does paranema；Q1-Q2:Driving FET, model：IRF640N；L1:Inductance, 47 μ H of model；C9:Electrolytic capacitor, model：
16V/100 μf；D7:Diode, model：IN5819；R5:Resistance, model：4.7Ω/ 0.5W；U4:Constant-current source, model：
AP1501-50。
Specific implementation mode
A kind of LED railway signals spotlight source device is by cooling fin（1）, LED light tube chip（2）, LED luminescence chip substrates
（3）, circuit board 1（4）, circuit board 2（5）, shell（6）, prefocus plate（7）, major-minor silk conversion testing switch (8）, main silk connecting line
（9）, paranema connecting line（10）, current compensation circuit（11）, current detection circuit（12）, driving and control circuit（13）, constant current
With lamp circuit (14), major-minor silk switches relay (15) and forms.It is coupled for electric connection mode between each component.Fundamental diagram
See Fig. 4：LED railway signal spotlight source device fundamental diagrams.
Cooling fin：Since LED light tube uses high-power light-emitting pipe, certain heat will produce at work, to protect
LED light tube is without damage exports the heat of luminous tube by cooling fin for card.
LED light tube chip：Using import high-power light-emitting pipe, have the characteristics that luminous intensity height, long lifespan.
LED luminescence chip substrates：LED light tube chip is fixed on substrate, will be hot by the connection of substrate and cooling fin
Amount export.
Circuit board：It is divided into circuit board 1（4）, circuit board 2（5）, circuit board is the core of LED railway signal spotlight source devices,
It has the function of to control the main silk of LED light tube point or paranema have constant current function, has to ensure that interior H18 relays are inhaled
The electric current compensation function risen has the function of to detect electric current and drive control etc..
The different role and feature of each circuit are described in detail below.
Current compensation circuit
LED chip shines very power saving, and power consumption is only 1/10 or so of former incandescent lamp bulb.Such as it is not added with current compensation circuit, root
Originally being not achieved can not also make lighting supply unit primary side current reach required value, to cause railway signal lighting system cannot
Normal work.In order to solve this problem, in the voltage input end of a LED point light source device current compensation module in parallel,
Its increased reactive current meets the requirement of indoor filament relay energized current value.Due to it is increased be reactive current, no
Actual power consumption is will produce, energy-saving effect is fully played.Circuit diagram is shown in attached drawing 2：Current compensation circuit figure.
Operation principle：Silk, paranema, common end based on lighting supply unit connecting terminal difference, access three wiring of printed board
End is respectively to meet origin lamp supply unit ZS, meet origin lamp supply unit FS, meet origin lamp supply unit G.When upper due to after
Electric appliance J1 line packets（J1-1）Not it is electric, printed board line power is by lighting supply unit paranema（FS）It is public with lighting supply unit
End（G）Forming circuit power supply.Control circuit detect the 13V power supply power supplies after rectification it is normal after, continue to detect the main silk of LED bulb or
Whether paranema is normal, such as main silk normal control relay line packet（J1-1）Obtain electric, J1 relay normally open contacts connection at this time, printing
Plate circuit is by the main silk of supply unit（ZS）With lighting supply unit common end（G）Forming circuit power supply.Control circuit controls relay
Device line packet（J2-2）Must be electric, J2 relay normally open contacts are connected at this time, and compensation circuit accesses in main silk and public end loop, lighting
The main silk end of supply unit just obtains stable current compensation.It ensure that indoor H18 relays reliably pick up.Such as main silk fracture of wire, control
Circuit control relay line packet processed（J1-1）Dead electricity, J1 relay normally closed contacts connection at this time, printed circuit board is by supply unit
Paranema（FS）With lighting supply unit common end（G）Forming circuit power supply.Control circuit controls relay line packet（J2-2）Must be electric,
J2 relay normally open contacts are connected at this time, and compensation circuit accesses paranema with public end loop, and the main silk end of lighting supply unit is just
Obtain stable current compensation.It ensure that indoor H18 relays reliably pick up.
This current compensation circuit is made of two diodes of tetra- electrolytic capacitors of C1, C2, C3, C4 and V1, V2.Current compensation
Circuit is a kind of special usage, must be by diode-isolated, such half-wave using electrolytic capacitor in alternating current circuit
Direct current, so electrolytic capacitor will not damage.When main silk AC power 13V positive half-waves work, electric current flows through C1, C3 and V2.So that
C1 and C3 charge rapidly, and C2 and C4 discharge rapidly.Electric current flows through C2, C4 and V1 when main silk AC power 13V bears half-wave.
So that C2 and C4 charge rapidly, C1 and C3 discharge rapidly.Because electrolytic capacitor C1, C2, C3, C4 are in positive charge negative sense always
Electric discharge, component is injury-free when ensure that alternating current circuit work.Simultaneously by the charge and discharge of C1, C2, C3, C4 electrolytic capacitor,
So that the quantity of electric charge increases in circuit, thus electric current also increases.By the quantity of electric charge Q of conductors cross with passing through these quantities of electric charge
The ratio of time t used is known as electric current, is also current strength.That is I=Q/t.The size of the quantity of electric charge is determined by capacitance size
It is fixed, so we select 1000 μ F that 200 μ F capacitances is added to constitute i.e. 1200 μ F, by adjusting lighting supply unit tap voltage, just
It can ensure that primary side current reaches 150mA, meet interior H18 relays and reliably pick up.
Current compensation and detection circuit
Operation principle：Current detection circuit is to switch to detect size of current and set, it is ensured that compensating electric capacity is reliable in circuit
Work.Current compensation circuit is that a kind of special working method is to ensure that the reliability of compensation circuit uses current detecting hand
Section.When LED point light source in the long-term use, since capacitance works long hours, quick charge and discharge can lead to the appearance of capacitance
Amount performance is declined, so selection high-performance, anti-high ripple, the ruby capacitance of long-life, effective time are
30000 hours.Even if still taking the means of current detecting in this way, the size of current of the electric current of detection compensation in real time.Work as capacitance
When capacity is declined, threshold is arranged in detection current circuit（When primary side is 120mA）, rear class control circuit allows J1 relay lines
Packet（J1-1）Dead electricity, J1 relays are in paranema state, while controlling LED bulb and switching to paranema, and lighting supply unit starts to report
Alert, alerting signal work replaces spotlight source device.When capacitance declines again, detection circuit detects that primary side current is
When 100mA, J2 relays are controlled, allow J2 relay line packets（J2-1）Dead electricity makes J2 relay normally closed contacts connect, and cuts off electric current
Compensation.Control circuit allows LED bulb to be in blackout state simultaneously, and indoor H18 relays is allowed reliably to fall.It ensure that railway signal
The safety that light bulb uses.Circuit diagram is shown in attached drawing 3：Current compensation and detection circuit figure.
U5 chips are the sensing chips of special test electric current, and the size of circuital current is converted into voltage signal, passes through electricity
Hold C11 isolation capacitances and take out corresponding AC signal, then be amplified by U6 chips, faint voltage signal can be amplified
In the range of capable of being identified to rear class control circuit.AC signal is become into direct current by the filtering of D5 diodes and C13 capacitances
Signal, then by R1 and R2 divider resistances, just obtained the stable DC signal that can be determined that signal magnitude, facilitated rear class control
Circuit judges processing.
Drive control circuit
Operation principle：Drive control circuit is the central processing unit of LED point light source.It is by control circuit chip
STC15W404AS and driving chip ULN2003A compositions, all analog quantity informations and controlled quentity controlled variable information are measured by them
And acquisition.Control circuit chip STC15W404AS detections supply voltage, compensation electric current, LED chip major-minor filament voltage, these types
Information is analog quantity, is compared according to the threshold of the size of information content acquisition and program setting and judges and then control driving core
Piece is the main silk of point or paranema, is attracted or disconnects to control J1 and J2 relays.Circuit diagram is shown in attached drawing 4：Driving and control
Circuit.
Constant current and lamp circuit
It is more sensitive to the environment temperature of work since LED light emitting diodes are a kind of semi-conducting materials, hold at high temperature
Fragile, often temperature more high current will be bigger, and electric current is bigger and temperature can be accelerated to increase and damage.Due to this dress
It sets and is mounted in signaling gear, mechanism lamp house is small, four sides seals, and radiating condition is very poor, thus devises switching mode perseverance
Current source circuit.The transistor of adjustment is on off state, will not generate extra heat in addition to conducting is just off, be LED
Chip, electrolytic capacitor, diode, integrated circuit etc. create suitable working environment.Circuit diagram is shown in attached drawing 5.
Operation principle：Constant current and lamp circuit are by great power LED luminous tube light bulb and U4 constant-current sources and peripheral circuit electricity
Sense, capacitance, diode and sample resistance composition.It is understood that the luminous intensity of luminous tube is determined by electric current, constant-current source
It provides 1.25V constant voltages inside AP1501-50, selects 4.7 Ω of sample resistance, ensure that luminous tube has constant 260mA
Electric current ensure that the luminous intensity of luminous tube is not impacted with the height of voltage.
Wiring board course of work explanation：
It is powered, is passed through to LED point light source device by LED railway signal spotlight source devices common end, main filament terminals
The rectifier bridge of diode D1, D2, D3, D4 composition and electrolytic capacitor C4, C5, C6 are filtered into the DC voltage of 16V integer is exchanged,
Switch voltage-stabilizing integrated circuit U4, U1 work.Microcontroller after the power is turned on, starts to execute blas.The 4th feet of microcontroller U2 are allowed to become first
For low level, J2 relays are made by 15 feet output low level using after 3 feet, 14 feet, 2 feet the progress paraphase of drive integrated circult U3
Device is attracted.It is started to work, is at this moment connected in circuit by the current compensation circuit that V1, V2, C1, C2, C3, C4 are formed after actuation
The 7th foot of Hall current sensor U5 just outputs the voltage signal directly proportional to electric current, and voltage signal is added to by capacitance C11
On operational amplifier U6, exported by 1 foot after its amplification.The signal of output obtains one after charging again to C13 via D5 can
Represent the DC voltage of compensation size of current.This voltage by being added to 1 foot of microcontroller U2 after resistance R1, R2 partial pressure, carries out again
Compensate current measurement.When measurement result less than setting normal value, then it represents that supply voltage is too low or compensation circuit fault, point
Light supply apparatus cannot work.When the 5th foot that the result of measurement is normal value microcontroller U2 exports high level, then access driving collects
At 1 foot of circuit U 3,16 feet output low level makes J1 be attracted.The 12nd foot of microcontroller U2 becomes high level and is added to field-effect tube Q1
Grid on, main silk LED chip is working properly.19 feet of microcontroller U2 check the operating voltage of main silk by resistance R3, R4, by
Then its normal voltage of constant current-supplying such as chip must be in normal setting range, measuring mouth electricity the case where if any circuit break and short circuit
Pressure will be more than or less than normal setting value.When the main silk of spotlight source device is working properly in normal setting range for voltage value.When
Voltage value indicates that main silk LED is faulty not in normal range (NR), and the 12nd foot of microcontroller U2 becomes low level and closes main silk field effect
Should the 11st foot of pipe Q1, U2 become high level and open the 5th foot of paranema field-effect tube Q2, U2 becoming low level, so that 16 feet of U3 is become
J1 relays are discharged for high level, changes and is powered by lighting supply unit paranema end.Spotlight source device is to lighting supply unit simultaneously
Deliver the information of the main silk failure of chip of LED（The main silk no current of lighting supply unit, paranema generate electric current）.Pass through microcontroller U2
The 19th foot check paranema operating voltage it is whether normal, when measuring mouth voltage indicates that paranema is working properly in normal range (NR).When
For measuring mouth voltage not in normal range (NR), the 11st foot of microcontroller U2 also becomes low level, closes paranema field-effect tube Q2, monolithic
The 4th foot of machine U2 also becomes high level makes J2 relays discharge by U3, and cut-out compensation circuit compensates current vanishes.This time point light
Source device is in blackout state, that is, spotlight source device damage.
A kind of LED railway signals spotlight source device, with integrated design, small, plug is convenient, it is existing directly to replace
There is the characteristics of incandescent lamp bulb in the railway system.The maintenance of railway signal workers, LED can be reduced using LED railway signals point light source
Railway signal point light source has many advantages, such as long-life, low-power consumption, can be that the railway system saves electric power.Appearance has especially been used in circuit
Property current compensation technology, this technology do not use in railway signal light bulb system, can play and both meet the railway system at home
The current requirements that indoor H18 relays are attracted, and play the role of saving electric power.
Claims (7)
1. a kind of LED railway signals spotlight source device, it is characterized in that：Signal spotlight source device is by cooling fin（1）, LED light tube
Chip（2）, LED luminescence chip substrates（3）, circuit board 1（4）, circuit board 2（5）, shell（6）, prefocus plate（7）, the conversion of major-minor silk
Test switch (8）, main silk connecting line（9）, paranema connecting line（10）, current compensation circuit（11）, current detection circuit（12）, drive
Dynamic and control circuit（13）, constant current and lamp circuit (14), major-minor silk switch relay (15) and form；It is electricity between each component
Connection type is coupled；The current compensation circuit is mended in the voltage input end electric current in parallel of LED point light source device
Module is repaid, current compensation circuit is made of four electrolytic capacitors and two diodes；The current detection circuit is to aim at inspection
It surveys size of current and sets, it is 30000 small to select high-performance, anti-high ripple, the ruby capacitance of long-life, effective time
When, the size of current of the electric current of detection compensation in real time；The driving and control circuit（13）It is the central processing of LED point light source
Device, it is made of control circuit chip STC15W404AS and driving chip ULN2003A；Driving and control circuit are LED point light
The central processing unit in source, it is made of control circuit chip STC15W404AS and driving chip ULN2003A.
2. a kind of LED railway signals spotlight source device according to claim 1, it is characterized in that：LED railway signal point light sources
Silk terminal, paranema terminal, public terminal based on device connecting terminal difference, access three terminals of printed board connect origin lamp electricity respectively
Source device ZS, access origin lamp supply unit FS, origin lamp supply unit G is met.
3. a kind of LED railway signals spotlight source device according to claim 1, it is characterized in that：The LED railway signals point
The current compensation circuit of light supply apparatus is made of four electrolytic capacitors and two diodes, and 1000 μ F is selected to add 200 μ F capacitance structures
At i.e. 1200 μ F, by adjusting lighting supply unit tap voltage, it will be able to ensure that primary side current reaches 150mA, meet room
Interior H18 relays reliably pick up.
4. a kind of LED railway signals spotlight source device according to claim 1, it is characterized in that：The LED railway signals point
The current detection circuit of light supply apparatus selects high-performance, anti-high ripple, the ruby capacitance of long-life, effective time to be
30000 hours, the size of current of the electric current of detection compensation in real time；When detection circuit detects that primary side current is 100mA, J2 is controlled
Relay, allows J2 relay line packet J2-1 dead electricity, and J2 relay normally closed contacts is made to connect, and cuts off current compensation, while controlling electricity
Road allows LED bulb to be in state of turning off the light, and allows indoor H18 relays reliably to fall, ensure that the safety that railway signal uses.
5. a kind of LED railway signals spotlight source device according to claim 1, it is characterized in that：The LED railway signals point
The driving of light supply apparatus and control circuit are made of control circuit chip STC15W404AS and driving chip ULN2003A, institute
Some analog quantity informations and controlled quentity controlled variable information are measured by them and are acquired.
6. a kind of LED railway signals spotlight source device according to claim 1, it is characterized in that：The LED railway signals point
The constant current of light supply apparatus and lamp circuit are by high-power LED and U4 constant-current sources and peripheral circuit, inductance, electricity
Appearance, diode and sample resistance composition, the luminous intensity of light emitting diode is determined by electric current, in constant-current source AP1501-50
Portion provides the constant voltages of 1.25V, selects 4.7 Ω of sample resistance, ensures that light emitting diode has constant 260mA electric currents, protects
The luminous intensity for having demonstrate,proved light emitting diode is not impacted with the height of voltage.
7. a kind of LED railway signals spotlight source device according to claim 1, it is characterized in that：The LED railway signals point
Light supply apparatus shell（6）It is the integrated design, with prefocus plate（7）The position of major-minor silk and white heat in original railway system after connection
Light bulb major-minor silk it is highly consistent, do not influence to focus；Shell（6）, prefocus plate（7）, major-minor silk conversion testing switch (8）, main silk
Connecting line（9）, paranema connecting line（10）Composition；The LED railway signals spotlight source device prefocus plate（7）With railway original system
Prefocus plate is consistent, can be directly loadable into lamp holder；The major-minor silk conversion testing switch (8 of the LED railway signals spotlight source device）
For convenience of railway signal workers periodic detection LED railway signal point light sources quality setting, flicking switch the main silk of LED light tube turn
For paranema, lighting supply unit signaling；The LED railway signals spotlight source device is by main silk connecting line（9）, paranema connecting line
（10）Composition, ad hoc main silk, paranema connecting line are separately connected main silk, paranema binding post, can prevent the bad influence system of switch jaw contact
System work.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721333732.8U CN207702143U (en) | 2017-10-17 | 2017-10-17 | A kind of LED railway signals spotlight source device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107514550A (en) * | 2017-10-17 | 2017-12-26 | 孙宗福 | A kind of LED railway signals spotlight source device |
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2017
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107514550A (en) * | 2017-10-17 | 2017-12-26 | 孙宗福 | A kind of LED railway signals spotlight source device |
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Effective date of registration: 20200429 Address after: 730070, No. 4, temporary road, Anning District, Gansu, Lanzhou Co-patentee after: Huang Jiagui Patentee after: Sun Zongfu Address before: 730070, No. 4, temporary road, Anning District, Gansu, Lanzhou Patentee before: Sun Zongfu |
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Granted publication date: 20180807 Termination date: 20201017 |