CN107426868A - A kind of LED signal machine control system - Google Patents
A kind of LED signal machine control system Download PDFInfo
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- CN107426868A CN107426868A CN201710622594.3A CN201710622594A CN107426868A CN 107426868 A CN107426868 A CN 107426868A CN 201710622594 A CN201710622594 A CN 201710622594A CN 107426868 A CN107426868 A CN 107426868A
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- Prior art keywords
- led
- control system
- machine control
- unit
- signal machine
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Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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]
Abstract
The present invention provides a kind of LED signal machine control system, including induced voltage cancellation module and LED light module, wherein induced voltage cancellation module, turned off the light caused induced voltage for eliminating LED light module, disconnect before LED light module lighting, closed before LED light module is turned off the light.LED signal machine control system provided by the invention, power supply one anti-tampering potential circuit of Front-end Design, to suppress induced voltage.Double loop power supply is set, and by selecting switch, when making that power supply damage all the way, seamless access another way power supply, guarantee power good works.By setting fictitious load unit, ensure the reliable excitation of filament relay.And set induced voltage to eliminate unit, to eliminate due to access fictitious load or the long induced voltage caused by existing tolerance between causing cable of circuit.And the system is used, and the energy more than 60% can be saved, it is more green.
Description
Technical field
The present invention relates to a kind of control system of outdoor railway signal, more particularly to one kind can improve railway signal
The LED signal machine control system of stability.
Background technology
Conventional railway signal lamp uses single incandescent lamp, and the principle of luminosity of incandescent lamp is all by thermoluminescence using object
Principle and heat radiation principle and realize.Incandescent lamp has：Preparation technology is simple, cost is cheap, and brightness is easily adjusted and controlled,
Colour rendering is good, and the advantages that colour rendering index Ra=100, but incandescent lamp also has many defects simultaneously：The electric energy for such as only having 12-18% turns
Luminous energy is turned to, luminous efficiency is low；Colour temperature is relatively low, generally 2700-3100K；Service life is short, generally 1000-3000 hours,
And the fluctuation of supply voltage makes the service life of incandescent lamp shorter.Railway signal lamp is frequently changed, not only labor intensity is big, and
And the potential safety hazard of very big driving and maintenance process can be caused, therefore the high speed development of railway cause is to railway signal lamp and iron
Road traffic safety proposes higher requirement.
With the development of semiconductor light-emitting-diode LED illumination technology, LED luminous efficiency has qualitative leap.As
Light source, LED advantage are embodied in three aspects：1) save, LED energy conversion efficiency is higher, strong for the illumination that reaches same
Degree, LED energy consumption is only the 15%--20% of incandescent lamp, the 40%-50% of energy-saving type fluorescent lamp.2) service life is grown, and LED is adopted
With solid encapsulation, sound construction, the life-span up to tens thousand of hours, reaches service life of incandescent lamp nearly a hundred times, the number 10 of fluorescent lifetime
Times.
Although existing LED signal machine service life greatly improves, but still there are problems that, such as 1) anti-tampering ability
Difference, because the electric current that LED needs is smaller, its cold resistance and thermal resistance are more or less the same, and the cold resistance very little of incandescent lamp, therefore existing
Some LED signal machines are more vulnerable to the interference in the external world than incandescent lamp and mistake is bright, reduce the stability of LED signal machine.2) it is breaking
Failure increases, and LED signal machine easily occurs to burn the phenomenon of relay, transformer caused by rectifying device punctures.
The content of the invention
The problem of present invention exists according to prior art, there is provided a kind of LED signal machine control system, and LED can be ensured
Semaphore stabilization, reliable bright light are turned off the light, and have perfect circuit protection, fault alarm function, and can effectively eliminate
The LED signal machine control system of induced voltage.
LED signal machine control system provided by the invention, including power module, LED light module and stubble warning device module.
Wherein, the AC power of input is converted into DC supply by the power module, including provides the change of electric energy
Depressor, electrically connected with the output end of the transformer, the first power supply and second source parallel with one another, and positioned at described first
The selecting switch of the rear end of power supply and second source, the working power of the output end of the selecting switch as LED light module；
LED light module, the output of the working power is received, realizes luminescence display；
Stubble warning device module, alarm and protection are realized to the signal in collection circuit.
In a preferred embodiment, the LED light module includes LED luminosity scales, and the LED luminosity scales include lamp
Cover, LED circuit board and multiple LED lamp beads in parallel in the LED circuit board, the LED circuit board and LED lamp bead
Inside the lampshade.
In a preferred embodiment, the stubble warning device module includes 1/3 stubble warning device unit and the first fracture of wire judges
Comparing subunit, the fracture of wire judge the quantity of the luminous lamp bead of comparing subunit detection, and compared with preset value, when LED lights
When the lamp bead quantity to be lighted in disk is less than the 1/3 of preset value, alarm sends alarm.
In a preferred embodiment, the stubble warning device module also includes 1/2 stubble warning device unit and the second fracture of wire is sentenced
Break comparing subunit, and the lamp bead quantity to be lighted in LED luminosity scales is less than the 1/2 of preset value, and filament relay is fallen, and lamp bead is whole
Extinguish, alarm sends alarm.
In a preferred embodiment, the LED signal machine control system is additionally provided with fictitious load unit, the fictitious load list
It is first in parallel with the LED luminosity scales, it is connected electrically in the working power, to improve in the LED signal machine control system
Total current, ensure the reliable excitation of indoor relay, it is preferable that the fictitious load unit is capacitive load.
In a preferred embodiment, the LED signal machine control system is additionally provided with induced voltage cancellation module, the sense
Answer voltage cancellation module to be disconnected before LED luminosity scale lightings, closed before LED luminosity scales are turned off the light.
In a preferred embodiment, the induced voltage cancellation module includes sensing driving Unit 2 and resistive load list
Member, wherein, sensing drives the normally closed contact of Unit 2 in parallel with the relay of sensing driving Unit 2 after being connected with resistive load, institute
It is in parallel with LED light module to state resistive load.
In a preferred embodiment, the induced voltage cancellation module also includes sensing driving Unit 3, and the sensing is driven
First normally closed contact SJ of dynamic Unit 3 electrically connects with resistive load, the second normally closed contact SJ and sensing driving Unit 2 relay
Electrical connection, Perceived control should drive Unit 2 to be powered or power off；And the rated voltage of the relay of sensing driving Unit 3 is higher than sensing
Drive the rated voltage of the relay of Unit 2.
In a preferred embodiment, the induced voltage cancellation module also includes sensing driving Unit 1, and the sensing is driven
The normally closed contact of dynamic Unit 1 electrically connects with resistive load.
In a preferred embodiment, the induced voltage cancellation module also includes the lighting driving unit, and the lighting is driven
Moving cell is provided with normally closed contact DJB and normal opened contact DJK, wherein, normally closed contact DJ Perceived controls should drive Unit 2 and/or sensing
Drive the energization or power-off of Unit 3, the energization or power-off of normal opened contact DJK control LED luminosity scales and fictitious load unit.
In a preferred embodiment, the LED signal machine control system is additionally provided with rectifier bridge.
In a preferred embodiment, first power supply, second source and front end be additionally provided with anti-clutter circuit, pass through
The reading method that is delayed suppresses induced voltage caused by transformer.
In a preferred embodiment, the LED signal machine control system is additionally provided with short-circuit protection unit, and the short circuit is protected
Shield unit is connected electrically between the working power and LED luminosity scales.
In a preferred embodiment, the LED signal machine control system is additionally provided with lightning protection unit, and the lightning protection is protected
Shield unit includes the one-level lightning protection circuit being connected in parallel between two output ends of working power and lightning protection PE lines.
LED signal machine control system provided by the invention, power supply one anti-tampering potential circuit of Front-end Design, to suppress to feel
Answer voltage.Double loop power supply is set, by selecting switch, when making that power supply damages all the way, seamless access another way power supply, guarantee
Power good works.A fictitious load unit in parallel with LED luminosity scales, the total current in the system is improved, ensure filament relay
Reliable excitation, and set induced voltage to eliminate unit, to eliminate due to access fictitious load or circuit is long causes to deposit between cable
Tolerance caused by induced voltage, unit is eliminated by the voltage, 130V induced voltage can be controlled in 30V or so.
Brief description of the drawings
Fig. 1 is the building-block of logic of LED signal machine control system provided by the invention.
Fig. 2 is the circuit diagram that induced voltage eliminates unit in Fig. 1.
Embodiment
Illustrate the structure of LED signal machine control system provided by the invention below by specific embodiment, but should be noted
It is that the specific embodiment is the specific preferred scheme of the present invention, does not represent the protection category of the present invention.
As shown in figure 1, LED signal machine control system provided by the invention, including power module, LED light module and disconnected
Silk alarm module.
Wherein, power module includes transformer XB1, is electrically connected with transformer XB1 output end, the parallel with one another first electricity
Source 13 and second source 12, are connected electrically in the first power supply 13, the anti-clutter circuit of the front end of second source 12, and with the first power supply 13
The selecting switch electrically connected with the output end of second source 12.
Transformer XB1 input termination 220V alternating currents, by transformer XB1,220V alternating currents are changed into 14V exchanges
14V alternating currents are changed into 12V DC electricity by electricity, the first power supply 13 and second source 12, straight by exporting 12V after selecting switch 14
Stream electricity is used as working power 15.
Wherein, anti-clutter circuit 11 is fly-wheel diode, is connected electrically in transformer XB1 output end, eliminating transformer XB1
The LED signal machine control system current oscillation caused by power-off, other components in protection system.
LED light module one end electrically connects with the working power 15 of power module, and the other end is electrically connected with stubble warning device module
Connect.
LED light module includes the lighting driving unit 21, fictitious load unit 25, induced voltage and eliminates unit 26 and LED hairs
CD 24, the structure chart of the lighting driving unit 21 are as shown in Figure 2.
The output end output 14V alternating currents of transformer, 14V alternating currents are divided into four branch roads, and tie point passes through rectifier bridge
It is divided into two branch roads after the normally closed contact DJB of rear tie points lamp driver element, normally closed contact DJB, connection sensing all the way drives 3
Relay, the electricity that another way is connected into for the first normally closed contact SJ of sensing driving Unit 3 and the relay of sensing driving Unit 2
Road.Wherein, the rated voltage of the relay of sensing driving Unit 2 is 5V, and the rated voltage of the relay of sensing driving Unit 2 is
12V。
Second branch road is connected the circuit to be formed, the 3rd branch road with LED luminosity scales for the normal opened contact DJK of the lighting driving unit
The circuit formed for the normal opened contact DJK of the lighting driving unit with fictitious load unit, wherein fictitious load unit is capacitive load.The
Four branch roads drive the normally closed contact of Unit 1 and the normally closed contact of sensing driving Unit 2, sensing to drive the second of Unit 3 for sensing
Normally closed contact SJ and resistive load are connected the circuit to be formed.
Further, the front end of LED luminosity scales 24 is additionally provided with short-circuit protection unit 22 and lightning protection unit 23, and short circuit is protected
It is prior art to protect unit 22 and lightning protection unit 23, be will not be repeated here.
Stubble warning device module includes judging comparison circuit 34,1/2 stubble warning device unit 31 and 1/3 stubble warning device unit 32,
Judge that comparison circuit 34 electrically connects with LED luminosity scales 24, judge that the fracture of wire in comparison circuit 34 judges that comparing subunit detects LED
The quantity for the lamp bead that lighted in luminosity scale 24, and compared with preset value, preset when the lamp bead quantity to be lighted in LED luminosity scales 24 is less than
Value 1/3 when, alarm driver element 33 control alarm send alarm, as buzzer sends sound, warning lamp flashing lamp；When
When the lamp bead quantity to be lighted in LED luminosity scales 24 is less than the 1/2 of preset value, relay is fallen, and lamp bead is all extinguished, alarm hair
Go out alarm.
Operation principle using LED signal machine control system provided by the invention is as follows：
First, during lighting
Lighting refers to obtain electric, momentary status during preparation in control panel.Now, 14V AC powers connect two-way, its
In all the way successively by the relay of sensing driving Unit 1, the normally closed contact of sensing driving Unit 2, sensing driving Unit 3 the
Two normally closed contact SJ and resistive load.Because the rated voltage of the relay of sensing driving Unit 1 is smaller, electric current drives by sensing
After the relay of dynamic Unit 1, the relay excitation of sensing driving Unit 1, the normally closed contact of sensing driving Unit 1 is changed into normally opened and connect
Point, cut-out resistive load access circuit.
Another way by rectifier bridge by AC rectification into direct current, then pass sequentially through the normally closed of the lighting driving unit 21
Contact DJB, sensing driving Unit 3 the first normally closed contact SJ and sensing driving Unit 2 relay, with supply voltage by
Edge up height, and the relay excitation of sensing driving Unit 2, the normally closed contact of sensing driving Unit 2 is changed into normal opened contact, continues to cut off
Resistive load accesses circuit.Supply voltage continues to raise, the relay excitation of sensing driving Unit 3, and the of sensing driving Unit 3
One normally closed contact SJ and the second normally closed contact SJ is changed into normal opened contact simultaneously, respectively cut-out sensing driving Unit 2 relay and
Resistive load accesses circuit.
Wherein, resistive load is intended merely to eliminate induced voltage, in order to meet the mesh for eliminating induced voltage and energy-conservation simultaneously
, resistive load is preferably the less load of resistance, and use feeling should drive Unit 1, sensing driving Unit 2 and sensing driving successively
The normally closed contact of Unit 3 disconnects resistive load three times, is further ensured that resistive load does not access circuit during lighting,
To protect resistive load.
When the voltage at 3 unit relay both ends of sensing driving reaches 12V, the relay excitation of the lighting driving unit 21, point
The normally closed contact DJB of lamp driver element 21 is changed into normal opened contact, and the relay of cut-out sensing driving Unit 3 accesses circuit, entirely
12V direct current is kept in LED signal machine control system.The normal opened contact DJK of the lighting driving unit 21 is changed into normally closed contact,
LED luminosity scales and fictitious load unit access circuit, LED luminosity scale normal works.
When the 2nd, turning off the light
When turning off the light, refer to the flashy working condition of control panel dead electricity.When the 14V AC powers of lighting disappear, whole LED
The 12V DC power supply at semaphore control system dead electricity LED luminosity scales both ends disappears.Sensing driving Unit 1, sensing driving Unit 2
With the equal dead electricity of relay of sensing driving Unit 3, sensing drives the normal of Unit 1, sensing driving Unit 2 and sensing driving Unit 3
Open contact and be changed into normally closed contact, resistive load is accessed into circuit, form loop, moment eliminates induced voltage.
Over time, the relay electric-loss of the lighting driving unit, control LED luminosity scales and capacitive load circuit
Normally closed contact reverts to normal opened contact DJK, and Perceived control should drive Unit 2 and/or the normal opened contact of sensing driving Unit 3 to revert to
Normally closed contact DJB, the normally closed contact DJB of the lighting driving unit will sense driving Unit 2 and sensing drives the relay of Unit 3 to connect
Enter circuit, it is common to eliminate caused induced voltage in circuit, so far, complete whole process of turning off the light.
3rd, fault case
Fault case, refer in lighting, due to the power failure of whole LED signal machine control system, or because LED is sent out
State when 1/2 lamp bead is turned off the light in CD.The input of LED signal machine control system provides normal voltage under this state, because
This, it is still desirable to ensure that whole LED signal machine control system circuit is in closure state.
Fault case 1The D. C. power source breakdown of LED signal machine control system
During D. C. power source breakdown, 12V DC power supply (DC12V) disappears, and the lighting driving unit lights without field power supply, LED
Disk and capacitive load do not access circuit.Sensing 1 unit excitation of driving, resistive load is cut off.
The 14V alternating currents of ac power input end pass sequentially through rectifier bridge, and the normally closed contact of the lighting driving unit will sense
Unit 2 and the sensing driving access circuit of Unit 3 are driven, sense the relay elder generation excitation of driving Unit 2, sensing driving Unit 3
Excitation after relay, it is now identical with situation during lighting, it is not repeated herein.Sensing is cut off after sensing 3 unit excitations of driving
Unit 2 are driven, prevent 14V alternating currents from burning out the relay of sensing driving Unit 2, driving Unit 2 are sensed with protection.
After sensing 2 unit excitations of driving, resistive load is connect by sensing driving Unit 2 and sensing driving the normally closed of Unit 3
Point is successively cut off, and protects resistive load.Whole circuit is in Light Condition guarantor so in the case where actually entering voltage
Demonstrate,prove indoor heater current and be less than 40mA.
Fault case 2When 1/2 luminosity scale is turned off the light
It is due to luminosity scale failure itself that 1/2 luminosity scale, which is turned off the light, is caused at LED signal machine control system provided by the invention
Sensing driving Unit 1 and the lighting driving unit dead electricity are caused by 1/2 control unit under 1/2 stubble warning device state, the state
Fall, so that luminosity scale is turned off the light completely, while also cut off capacitive load.
Sensing driving Unit 1 first acts, and is acted after the lighting driving unit, when the lighting driving unit dead electricity, relay is fallen
After falling, sensing driving Unit 2 and sensing driving Unit 3 are accessed by normally closed contact, when subsequent action process and power failure
Unanimously, here is omitted.
By above-mentioned analysis, LED signal machine control system provided by the invention can solve current rail LED controls
Unit common problem, it can effectively evade the risk brought by induced voltage., and use LED provided by the invention
Semaphore control system, due to there was only LED luminosity scales and fictitious load unit access circuit during normal work, during fault, it is
System is in Light Condition, when turning off the light, only resistive load access circuit, therefore the system more energy-saving and environmental protection, energy-conservation are up to
60%.
The specific embodiment of the present invention is described in detail above, but it is intended only as example, it is of the invention and unlimited
It is formed on particular embodiments described above.To those skilled in the art, it is any to the equivalent modifications that carry out of the present invention and
Substitute also all among scope of the invention.Therefore, the impartial conversion made without departing from the spirit and scope of the invention and
Modification, all should be contained within the scope of the invention.
Claims (10)
1. a kind of LED signal machine control system, it is characterised in that including induced voltage cancellation module and LED light module；
Wherein, LED light module, the signal of working power is received, realizes luminous or display of turning off the light；
The induced voltage cancellation module, eliminate LED light module and turn off the light caused induced voltage, in LED light module point
Disconnect before lamp, closed before LED light module is turned off the light.
2. LED signal machine control system according to claim 1, it is characterised in that the induced voltage cancellation module bag
Include sensing driving Unit 2 and resistive load unit, wherein, after the normally closed contact of sensing driving Unit 2 and resistive load series connection with
The relay of sensing driving Unit 2 is in parallel, and the resistive load is in parallel with LED light module.
3. LED signal machine control system according to claim 2, it is characterised in that the induced voltage cancellation module is also
Unit 3 are driven including sensing, the first normally closed contact SJ of sensing driving Unit 3 electrically connects with resistive load, and second is normally closed
Contact SJ electrically connects with the relay of sensing driving Unit 2, and Perceived control should drive Unit 2 to be powered or power off；And sensing driving 3 is single
Rated voltage of the rated voltage of the relay of member higher than the relay of sensing driving Unit 2.
4. LED signal machine control system according to claim 3, it is characterised in that the induced voltage cancellation module is also
Unit 1 is driven including sensing, the normally closed contact of sensing driving Unit 1 electrically connects with resistive load.
5. LED signal machine control system according to claim 3, it is characterised in that the induced voltage cancellation module is also
Including the lighting driving unit, the lighting driving unit is provided with normally closed contact DJB and normal opened contact DJK, wherein, normally closed contact DJ
Perceived control should drive the energization or power-off of Unit 2 and/or sensing driving Unit 3, normal opened contact DJK control LED light modules
It is powered or powers off.
6. LED signal machine control system according to claim 1, it is characterised in that the LED signal machine control system is also
Including power module, the AC power of input is converted into DC supply by the power module, including provides the change of electric energy
Depressor, electrically connected with the output end of the transformer, the first power supply and second source parallel with one another, and positioned at described first
The selecting switch of the rear end of power supply and second source, the working power of the output end of the selecting switch as LED light module.
7. LED signal machine control system according to claim 6, it is characterised in that first power supply, second source with
Front end be additionally provided with anti-clutter circuit, pass through be delayed reading method suppress transformer caused by induced voltage.
8. LED signal machine control system according to claim 1, it is characterised in that the LED light module includes LED
Luminosity scale, the LED luminosity scales include lampshade, LED circuit board and multiple LED in parallel in the LED circuit board
Lamp bead, the LED circuit board and LED lamp bead are located inside the lampshade.
9. LED signal machine control system according to claim 8, it is characterised in that the LED signal machine control system is also
Provided with fictitious load unit, the fictitious load unit is in parallel with the LED luminosity scales, is connected electrically in working power.
10. LED signal machine control system according to claim 1, it is characterised in that the LED signal machine control system
Also include stubble warning device module；
The stubble warning device module includes 1/3 stubble warning device unit and fracture of wire judges comparing subunit, and/or 1/2 stubble warning device
Unit, the fracture of wire judge the quantity of the luminous lamp bead of comparing subunit detection, and compared with preset value, are lighted in LED luminosity scales
Lamp bead quantity be less than preset value 1/3, alarm sends alarm；The lamp bead quantity to be lighted in LED luminosity scales is less than preset value
1/2, filament relay is fallen, and lamp bead is all extinguished, and alarm sends alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710622594.3A CN107426868B (en) | 2017-07-27 | 2017-07-27 | LED (light emitting diode) signal machine control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710622594.3A CN107426868B (en) | 2017-07-27 | 2017-07-27 | LED (light emitting diode) signal machine control system |
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| Publication Number | Publication Date |
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| CN107426868A true CN107426868A (en) | 2017-12-01 |
| CN107426868B CN107426868B (en) | 2020-06-19 |
Family
ID=60430338
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| CN201710622594.3A Active CN107426868B (en) | 2017-07-27 | 2017-07-27 | LED (light emitting diode) signal machine control system |
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| CN110481598A (en) * | 2019-07-30 | 2019-11-22 | 交控科技股份有限公司 | A kind of semaphore, control method and the circuit of movable block and the mixed race of fixed blocking |
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| CN110481598A (en) * | 2019-07-30 | 2019-11-22 | 交控科技股份有限公司 | A kind of semaphore, control method and the circuit of movable block and the mixed race of fixed blocking |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN107426868B (en) | 2020-06-19 |
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