CN107426868B - LED (light emitting diode) signal machine control system - Google Patents
LED (light emitting diode) signal machine control system Download PDFInfo
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- CN107426868B CN107426868B CN201710622594.3A CN201710622594A CN107426868B CN 107426868 B CN107426868 B CN 107426868B CN 201710622594 A CN201710622594 A CN 201710622594A CN 107426868 B CN107426868 B CN 107426868B
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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
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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
- 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]
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Abstract
The invention provides an LED annunciator control system which comprises an induced voltage elimination module and an LED light-emitting module, wherein the induced voltage elimination module is used for eliminating induced voltage generated when the LED light-emitting module is turned off, and is switched off before the LED light-emitting module is turned on and switched on before the LED light-emitting module is turned off. According to the LED signal machine control system provided by the invention, the anti-interference voltage circuit is designed at the front end of the power supply so as to inhibit the induction voltage. The double-circuit power supply is arranged, and when one circuit of power supply is damaged, the other circuit of power supply is connected in a seamless mode through the selection switch, so that stable work of the power supply is guaranteed. By arranging the dummy load unit, reliable excitation of the filament relay is ensured. And an induced voltage elimination unit is arranged to eliminate the induced voltage generated by the tolerance existing between the cables due to the access of a dummy load or the overlong line. And by using the system, the energy can be saved by more than 60%, and the system is more environment-friendly.
Description
Technical Field
The invention relates to a control system of an outdoor railway signal machine, in particular to an LED signal machine control system capable of improving the stability of the railway signal machine.
Background
The prior railway signal lamp uses a single incandescent lamp, and the light-emitting principle of the incandescent lamp is realized by utilizing the heat radiation principle and the heat radiation principle of an object. The incandescent lamp has: the preparation process is simple, the cost is low, the brightness is easy to adjust and control, the color rendering property is good, the color rendering index Ra is 100, and the like, but the incandescent lamp has many defects: if only 12-18% of electric energy is converted into light energy, the luminous efficiency is low; the color temperature is lower, generally 2700-; the service life is short, generally 1000-3000 hours, and the fluctuation of the power supply voltage makes the service life of the incandescent lamp shorter. Frequent replacement of the railway signal lamp not only has high labor intensity, but also can cause great potential safety hazards in the process of running and maintenance, so that the high-speed development of railway industry puts higher requirements on the railway signal lamp and the railway running safety.
With the development of semiconductor Light Emitting Diode (LED) lighting technology, the luminous efficiency of LEDs has been greatly improved. As a light source, the LED has advantages in three aspects: 1) the energy-saving LED lamp has the advantages that the energy is saved, the energy conversion efficiency of the LED is high, in order to achieve the same illumination intensity, the energy consumption of the LED is only 15% -20% of that of an incandescent lamp, and the energy consumption of the LED is 40% -50% of that of an energy-saving fluorescent lamp. 2) The service life of the LED is long, the LED is packaged by solid, the structure is firm, the service life can reach tens of thousands of hours, nearly one hundred times of that of an incandescent lamp, and 10 times of that of a fluorescent lamp.
Although the service life of the existing LED annunciator is greatly prolonged, the existing LED annunciator still has some problems, such as 1) poor anti-interference capability, because the current required by an LED luminous tube is smaller, the difference between the cold resistance and the thermal resistance is not large, and the cold resistance of an incandescent lamp is very small, the existing LED annunciator is easier to be interfered by the outside and is lighted by mistake than the incandescent lamp, and the stability of the LED annunciator is reduced. 2) Open circuit faults are increased, and the phenomenon that relays and transformers are burnt down due to breakdown of rectifying devices is easy to happen to the LED signal machine.
Disclosure of Invention
According to the problems in the prior art, the invention provides the LED signal machine control system, which can ensure that the LED signal machine is stably and reliably turned on or turned off, has perfect circuit protection and fault alarm functions and can effectively eliminate the induced voltage.
The LED signal machine control system provided by the invention comprises a power supply module, an LED light-emitting module and a broken wire alarm module.
The power supply module converts an input alternating current power supply into a direct current working power supply and comprises a transformer for providing electric energy, a first power supply, a second power supply and a selection switch, wherein the first power supply and the second power supply are electrically connected with the output end of the transformer and are mutually connected in parallel, the selection switch is positioned at the rear ends of the first power supply and the second power supply, and the output end of the selection switch is used as the working power supply of the LED light-emitting module;
the LED light-emitting module receives the output of the working power supply and realizes light-emitting display;
and the broken wire alarm module is used for alarming and protecting signals in the acquisition circuit.
In a preferred embodiment, the LED lighting module comprises an LED lighting panel, the LED lighting panel comprises a lampshade, an LED circuit board and a plurality of LED lamp beads mounted on the LED circuit board in parallel, and the LED circuit board and the LED lamp beads are located inside the lampshade.
In a preferred embodiment, the broken filament alarm module comprises an 1/3 broken filament alarm unit and a first broken filament judgment and comparison subunit, wherein the broken filament judgment and comparison subunit detects the number of the luminous lamp beads and compares the number with a preset value, and when the number of the luminous lamp beads in the LED luminous disc is less than 1/3 of the preset value, the alarm gives an alarm.
In a preferred embodiment, the broken wire alarm module further comprises an 1/2 broken wire alarm unit and a second broken wire judgment and comparison subunit, the number of the luminous lamp beads in the LED luminous panel is less than 1/2 of a preset value, the lamp filament relay falls down, all the lamp beads are turned off, and the alarm gives an alarm.
In a preferred embodiment, the LED signal machine control system is further provided with a dummy load unit, the dummy load unit is connected in parallel with the LED light emitting panel and electrically connected to the working power supply, so as to increase the total current in the LED signal machine control system and ensure reliable excitation of the indoor relay, and preferably, the dummy load unit is a capacitive load.
In a preferred embodiment, the LED annunciator control system is further provided with an induced voltage elimination module, wherein the induced voltage elimination module is turned off before the LED light emitting panel is turned on and is turned on before the LED light emitting panel is turned off.
In a preferred embodiment, the induced voltage elimination module comprises an induction drive 2 unit and a resistive load unit, wherein a normally closed contact of the induction drive 2 unit is connected in series with the resistive load and then connected in parallel with a relay of the induction drive 2 unit, and the resistive load is connected in parallel with the LED light emitting module.
In a preferred embodiment, the induction voltage elimination module further comprises an induction drive 3 unit, wherein a first normally closed contact SJ1 of the induction drive 3 unit is electrically connected with a resistive load, and a second normally closed contact SJ2 of the induction drive 3 unit is electrically connected with a relay of the induction drive 2 unit to control the induction drive 2 unit to be powered on or powered off; and the rated voltage of the relay of the induction drive 3 unit is higher than that of the relay of the induction drive 2 unit.
In a preferred embodiment, the induced voltage elimination module further comprises an induction drive 1 unit, and a normally-closed contact of the induction drive 1 unit is electrically connected with a resistive load.
In a preferred embodiment, the induced voltage eliminating module further comprises a lighting driving unit, and the lighting driving unit is provided with a normally closed contact DJB and a normally open contact DJK, wherein the normally closed contact DJB controls the induction driving unit 2 and/or the induction driving unit 3 to be powered on or powered off, and the normally open contact DJK controls the LED lighting panel and the dummy load unit to be powered on or powered off.
In a preferred embodiment, the LED signal machine control system is further provided with a rectifier bridge.
In a preferred embodiment, the front ends of the first power supply and the second power supply are further provided with an anti-interference circuit, and the induced voltage generated by the transformer is inhibited through a time delay reading method.
In a preferred embodiment, the LED annunciator control system is further provided with a short-circuit protection unit, and the short-circuit protection unit is electrically connected between the working power supply and the LED light-emitting panel.
In a preferred embodiment, the LED signaler control system is further provided with a lightning protection unit, and the lightning protection unit comprises a primary lightning protection circuit connected in parallel between two output ends of the working power supply and the lightning protection grounding PE line.
According to the LED signal machine control system provided by the invention, the anti-interference voltage circuit is designed at the front end of the power supply so as to inhibit the induction voltage. The double-circuit power supply is arranged, and when one circuit of power supply is damaged, the other circuit of power supply is connected in a seamless mode through the selection switch, so that stable work of the power supply is guaranteed. The LED lamp system is characterized in that a dummy load unit is connected with the LED luminous panel in parallel, the total current in the system is improved, the reliable excitation of the filament relay is guaranteed, an induced voltage eliminating unit is arranged to eliminate induced voltage generated by tolerance existing between cables due to the fact that the dummy load is connected or a circuit is too long, and the induced voltage of 130V can be controlled to be about 30V through the voltage eliminating unit.
Drawings
Fig. 1 is a logic structure diagram of an LED signaling machine control system provided by the present invention.
Fig. 2 is a circuit diagram of an induced voltage removing unit of fig. 1.
Detailed Description
The structure of the LED signaling machine control system provided by the present invention is described below by using a specific embodiment, but it should be noted that the specific embodiment is only a specific preferred scheme of the present invention, and does not represent the protection scope of the present invention.
As shown in fig. 1, the LED annunciator control system provided by the present invention includes a power module, an LED light-emitting module, and a wire breakage alarm module.
The power supply module comprises a transformer XB1, a first power supply 13 and a second power supply 12 which are electrically connected with the output end of the transformer XB1 and are connected with each other in parallel, an anti-interference circuit 11 which is electrically connected with the front ends of the first power supply 13 and the second power supply 12, and a selection switch 14 which is electrically connected with the output ends of the first power supply 13 and the second power supply 12.
The input end of the transformer XB1 is connected with 220V alternating current, the 220V alternating current is converted into 14V alternating current through the transformer XB1, the 14V alternating current is converted into 12V direct current by the first power supply 13 and the second power supply 12, and the 12V direct current is output as the working power supply 15 after passing through the selection switch 14.
The anti-interference circuit 11 is a freewheeling diode and is electrically connected to the output terminal of the transformer XB1 to eliminate current oscillation of the LED annunciator control system caused by power failure in the transformer XB1 and protect other components in the system.
One end of the LED light-emitting module is electrically connected with the working power supply 15 of the power supply module, and the other end of the LED light-emitting module is electrically connected with the broken wire alarm module.
The LED light emitting module includes a lighting driving unit 21, a dummy load unit 25, an induced voltage cancellation unit 26, and an LED light emitting panel 24, and the configuration diagram of the lighting driving unit 21 is shown in fig. 2.
The output end of the transformer outputs 14V alternating current, the 14V alternating current is divided into four branches, the first branch is connected with a normally closed contact DJB of the lighting driving unit after passing through the rectifier bridge, the normally closed contact DJB is divided into two branches, one branch is connected with a relay of the induction driving unit 3, and the other branch is a circuit formed by serially connecting a second normally closed contact SJ2 of the induction driving unit 3 and the relay of the induction driving unit 2. The rated voltage of the relay of the induction drive unit 2 is 5V, and the rated voltage of the relay of the induction drive unit 3 is 12V.
The second branch circuit is a circuit formed by connecting the normally open contact DJK of the lighting driving unit and the LED luminous disk, the third branch circuit is a circuit formed by the normally open contact DJK of the lighting driving unit and the dummy load unit, and the dummy load unit is a capacitive load. The fourth branch is a circuit formed by connecting the normally closed contact of the induction drive 1 unit, the normally closed contact of the induction drive 2 unit, the first normally closed contact SJ1 of the induction drive 3 unit and the resistive load in series.
Further, the front end of the LED light emitting disc 24 is further provided with a short-circuit protection unit 22 and a lightning protection unit 23, and both the short-circuit protection unit 22 and the lightning protection unit 23 are in the prior art and are not described herein again.
The broken wire alarm module comprises a judgment and comparison circuit 34, an 1/2 broken wire alarm unit 31 and a 1/3 broken wire alarm unit 32, the judgment and comparison circuit 34 is electrically connected with the LED light-emitting disc 24, a broken wire judgment and comparison subunit in the judgment and comparison circuit 34 detects the number of light-emitting lamp beads in the LED light-emitting disc 24 and compares the number with a preset value, and when the number of the light-emitting lamp beads in the LED light-emitting disc 24 is smaller than 1/3 of the preset value, the alarm driving unit 33 controls the alarm to give an alarm, for example, a buzzer makes a sound, and a warning lamp flickers; when the number of the luminous lamp beads in the LED luminous disc 24 is smaller than 1/2 of the preset value, the relay falls down, the lamp beads are completely extinguished, and the alarm gives an alarm.
The working principle of the LED signal machine control system provided by the invention is as follows:
at first, when lighting up
The lighting is an instant state when the control board is powered on and ready to work. At the moment, the 14V alternating-current power supply is switched on two paths, wherein one path sequentially passes through the normally closed contact of the induction drive 1 unit, the normally closed contact of the induction drive 2 unit, the first normally closed contact SJ1 of the induction drive 3 unit and the resistive load. Because the rated voltage of the relay of the induction driving 1 unit is small, after the current passes through the relay of the induction driving 1 unit, the relay of the induction driving 1 unit is excited, the normally closed contact of the induction driving 1 unit is changed into the normally open contact, and the resistive load access circuit is cut off.
And the other path of the alternating current is rectified into direct current through a rectifier bridge, then the direct current passes through a normally closed contact DJB of the lighting driving unit 21, a second normally closed contact SJ2 of the induction driving unit 3 and a relay of the induction driving unit 2 in sequence, the relay of the induction driving unit 2 is excited along with the gradual rise of the power supply voltage, the normally closed contact of the induction driving unit 2 is changed into a normally open contact, and the resistive load access circuit is continuously cut off. And the power supply voltage continues to rise, the relays of the induction drive 3 units are excited, the first normally closed contact SJ1 and the second normally closed contact SJ2 of the induction drive 3 units are simultaneously changed into normally open contacts, and the relays and the resistive load access circuits of the induction drive 2 units are respectively cut off.
The resistive load is preferably a load with a relatively small resistance, and normally closed contacts of the induction driving 1 unit, the induction driving 2 unit and the induction driving 3 unit are sequentially used for disconnecting the resistive load for three times, so that the resistive load is further ensured not to be connected into a circuit in the lighting process, and the resistive load is protected.
When the voltage at the two ends of the relay of the induction driving unit 3 reaches 12V, the relay of the lighting driving unit 21 is excited, the normally closed contact DJB of the lighting driving unit 21 becomes a normally open contact, the relay access circuit of the induction driving unit 3 is cut off, and the direct current of 12V is kept in the whole LED annunciator control system. The normally open contact DJK of the lighting drive unit 21 becomes a normally closed contact, the LED light emitting panel and the dummy load unit are connected to the circuit, and the LED light emitting panel operates normally.
When the lamp is turned off
When the lamp is turned off, the working state of the control panel at the moment of power failure is indicated. When the lighted 14V alternating current power supply disappears, the whole LED annunciator control system loses power, and the 12V direct current power supplies at the two ends of the LED luminous panel disappear. The relays of the induction driving unit 1, the induction driving unit 2 and the induction driving unit 3 are all powered off, normally open contacts of the induction driving unit 1, the induction driving unit 2 and the induction driving unit 3 are changed into normally closed contacts, a resistive load is connected into a circuit, a loop is formed, and induction voltage is eliminated instantly.
With the lapse of time, the relay of drive unit of lighting a lamp loses the electricity, the normally closed contact of control LED luminescent disc and capacitive load circuit resumes to normally open contact DJK, the normally open contact of control induction drive 2 units and/or induction drive 3 units resumes to normally closed contact DJB, the normally closed contact DJB of drive unit of lighting a lamp inserts the relay of induction drive 2 units and induction drive 3 units into the circuit, eliminate the induced voltage that produces in the circuit jointly, to this end, accomplish whole process of putting out a lamp.
Three, failure state
The fault state is a state when the lamp is turned on, due to the power failure of the whole LED signal machine control system, or due to the fact that 1/2 lamp beads in the LED light-emitting panel are turned off. In this state, the input terminal of the LED signal control system provides a normal voltage, and therefore, it is still necessary to ensure that the entire circuit of the LED signal control system is in a closed state.
Failure state 1: DC power failure of LED signal machine control system
When the direct current power supply fails, the 12V direct current power supply (DC12V) disappears, the lighting driving unit has no excitation power supply, and the LED light-emitting disc and the capacitive load are not connected into the circuit. The induction drive 1 unit is excited to cut off the resistive load.
The 14V alternating current of alternating current power supply input loops through the rectifier bridge, and induction drive 2 unit and induction drive 3 unit access circuit are connected to the normally closed contact of drive unit of lighting a lamp, and the relay of induction drive 2 unit is excited earlier, and the excitation is carried out behind the relay of induction drive 3 unit, and the situation when this moment with lighting a lamp is the same, and this is no longer repeated here. And the induction drive unit 2 is cut off after the induction drive unit 3 is excited, and the 14V alternating current is prevented from burning out a relay of the induction drive unit 2, so that the induction drive unit 2 is protected.
After the induction driving unit 2 is excited, the resistive load is cut off successively through the normally closed contacts of the induction driving unit 2 and the induction driving unit 3, and the resistive load is protected. Thus, the whole circuit is in an idle state under the condition of actual input voltage, and the indoor filament current is ensured to be less than 40 mA.
Failure state 2: 1/2 when the light-emitting plate is turned off
1/2 the failure of the luminous disc leads the LED signal machine control system provided by the invention to be in the 1/2 state of wire-break alarm due to the failure of the luminous disc, and the 1/2 control unit leads the induction drive 1 unit and the lighting drive unit to lose power and fall down, thereby the luminous disc is completely extinguished, and the capacitive load is cut off at the same time.
The induction drive unit 1 acts firstly, the lighting drive unit acts later, when the lighting drive unit loses power, and the relay falls down, the induction drive unit 2 and the induction drive unit 3 are connected through the normally closed contact, and the follow-up action process is consistent with the power failure, and the description is omitted here.
Through the analysis, the LED signal machine control system provided by the invention can well solve the problems commonly existing in the current railway LED control unit, and can effectively avoid the risk caused by induced voltage, and due to the adoption of the LED signal machine control system provided by the invention, only the LED light-emitting disc and the dummy load unit are connected into the circuit during normal work, when the circuit is in fault, the system is in a no-load state, and when the lamp is turned off, only the resistive load is connected into the circuit, so that the system is more energy-saving and environment-friendly, and the energy is saved by up to 60%.
The embodiments of the present invention have been described in detail, but the embodiments are merely examples, and the present invention is not limited to the embodiments described above. Any equivalent modifications and substitutions to those skilled in the art are also within the scope of the present invention. Accordingly, equivalent changes and modifications made without departing from the spirit and scope of the present invention should be covered by the present invention.
Claims (9)
1. An LED signal machine control system is characterized by comprising an induced voltage elimination module and an LED light-emitting module;
the LED light-emitting module receives a signal of a working power supply to realize light-emitting or light-off display;
the inductive voltage elimination module comprises an inductive drive 2 unit and a resistive load unit, wherein a normally closed contact of the inductive drive 2 unit and a resistive load are connected in series and then connected in parallel with a relay of the inductive drive 2 unit, the resistive load is connected in parallel with the LED light-emitting module, the inductive voltage elimination module eliminates inductive voltage generated when the LED light-emitting module is turned off, the inductive voltage is disconnected before the LED light-emitting module is turned on, and the inductive voltage elimination module is closed before the LED light-emitting module is turned off.
2. The LED annunciator control system of claim 1, wherein the induction voltage eliminating module further comprises an induction drive 3 unit, a first normally closed contact SJ1 of the induction drive 3 unit is electrically connected with a resistive load, a second normally closed contact SJ2 is electrically connected with a relay of the induction drive 2 unit, and the induction drive 2 unit is controlled to be powered on or powered off; and the rated voltage of the relay of the induction drive 3 unit is higher than that of the relay of the induction drive 2 unit.
3. The LED signaler control system according to claim 2, wherein the induced voltage cancellation module further comprises an induction drive 1 unit, and a normally closed contact of the induction drive 1 unit is electrically connected to the resistive load.
4. The LED annunciator control system according to claim 2, wherein the induced voltage eliminating module further comprises a lighting driving unit, the lighting driving unit is provided with a normally closed contact DJB and a normally open contact DJK, wherein the normally closed contact DJB controls the power on or off of the induction driving 2 unit and/or the induction driving 3 unit, and the normally open contact DJK controls the power on or off of the LED light-emitting module.
5. The LED annunciator control system according to claim 1, further comprising a power module, wherein the power module converts an input ac power into a dc operating power, and comprises a transformer for supplying power, a first power supply and a second power supply electrically connected to output terminals of the transformer and connected in parallel with each other, and a selection switch located at a rear end of the first power supply and the second power supply, an output terminal of the selection switch being used as an operating power supply for the LED light-emitting module.
6. The LED annunciator control system according to claim 5, wherein the front ends of the first power supply and the second power supply are further provided with an anti-interference circuit for suppressing the induced voltage generated by the transformer by a time-delay read-in method.
7. The LED annunciator control system of claim 1, wherein the LED light module comprises an LED light disk comprising a lamp housing, an LED circuit board and a plurality of parallel LED beads mounted on the LED circuit board, the LED circuit board and LED beads being located inside the lamp housing.
8. The LED annunciator control system according to claim 7, further comprising a dummy load unit connected in parallel with the LED light emitting panel and electrically connected to an operating power supply.
9. The LED annunciator control system of claim 1, further comprising a wire break alarm module;
the broken wire alarm module comprises an 1/3 broken wire alarm unit, a broken wire judgment and comparison subunit and/or a 1/2 broken wire alarm unit, the broken wire judgment and comparison subunit detects the number of the luminous lamp beads and compares the number with a preset value, the number of the luminous lamp beads in the LED luminous disc is smaller than 1/3 of the preset value, and the alarm gives an alarm; luminous lamp pearl quantity is less than 1/2 of default in the LED luminescent disc, and the filament relay falls, and the lamp pearl is whole to be extinguished, and the alarm sends the warning.
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| CN108495417B (en) * | 2018-04-20 | 2024-07-19 | 天津光电通信技术有限公司 | Circuit system of railway signal LED bulb and design method thereof |
| CN109168228B (en) * | 2018-10-29 | 2020-10-30 | 通号万全信号设备有限公司 | LED signal machine circuit of lighting a lamp |
| CN110481598B (en) * | 2019-07-30 | 2021-09-10 | 交控科技股份有限公司 | Signal machine for mixed running of mobile block and fixed block, control method and circuit |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201023492Y (en) * | 2006-08-23 | 2008-02-20 | 张义政 | Multipurpose intelligence railway signal lighting system |
| CN201274408Y (en) * | 2008-08-08 | 2009-07-15 | 山东聊城鲁西化工第二化肥有限公司 | Remote control apparatus for automatically eliminating induction voltage |
| CN202769769U (en) * | 2012-09-21 | 2013-03-06 | 浙江帅康电气股份有限公司 | Extractor hood of improved light emitting diode (LED) lighting lamp |
| CN105305846A (en) * | 2015-06-19 | 2016-02-03 | 惠科电子（深圳）有限公司 | High-power flyback power supply circuit and AC-DC power supply |
| CN205071365U (en) * | 2015-08-24 | 2016-03-02 | 深圳市晶导电子有限公司 | Emitting diode lighting drive circuit and lamps and lanterns |
| CN106655720A (en) * | 2017-02-27 | 2017-05-10 | 大族激光科技产业集团股份有限公司 | Power supply driving apparatus and laser power supply |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200985032Y (en) * | 2006-12-25 | 2007-12-05 | 王楷迪 | Control system for LED railway signal machine |
| CN206719226U (en) * | 2017-03-08 | 2017-12-08 | 东莞职业技术学院 | A kind of dibit complete colour signal lamp applied to railway locomotive |
-
2017
- 2017-07-27 CN CN201710622594.3A patent/CN107426868B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201023492Y (en) * | 2006-08-23 | 2008-02-20 | 张义政 | Multipurpose intelligence railway signal lighting system |
| CN201274408Y (en) * | 2008-08-08 | 2009-07-15 | 山东聊城鲁西化工第二化肥有限公司 | Remote control apparatus for automatically eliminating induction voltage |
| CN202769769U (en) * | 2012-09-21 | 2013-03-06 | 浙江帅康电气股份有限公司 | Extractor hood of improved light emitting diode (LED) lighting lamp |
| CN105305846A (en) * | 2015-06-19 | 2016-02-03 | 惠科电子（深圳）有限公司 | High-power flyback power supply circuit and AC-DC power supply |
| CN205071365U (en) * | 2015-08-24 | 2016-03-02 | 深圳市晶导电子有限公司 | Emitting diode lighting drive circuit and lamps and lanterns |
| CN106655720A (en) * | 2017-02-27 | 2017-05-10 | 大族激光科技产业集团股份有限公司 | Power supply driving apparatus and laser power supply |
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| CN107426868A (en) | 2017-12-01 |
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