CN113630936A - Novel railway signal LED lighting circuit and working method thereof - Google Patents
Novel railway signal LED lighting circuit and working method thereof Download PDFInfo
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- CN113630936A CN113630936A CN202111079172.9A CN202111079172A CN113630936A CN 113630936 A CN113630936 A CN 113630936A CN 202111079172 A CN202111079172 A CN 202111079172A CN 113630936 A CN113630936 A CN 113630936A
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- 238000012544 monitoring process Methods 0.000 claims abstract description 20
- 238000004891 communication Methods 0.000 claims description 23
- 230000008878 coupling Effects 0.000 claims description 10
- 238000010168 coupling process Methods 0.000 claims description 10
- 238000005859 coupling reaction Methods 0.000 claims description 10
- 238000002955 isolation Methods 0.000 claims description 10
- 230000003287 optical effect Effects 0.000 claims description 10
- 238000005070 sampling Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 3
- 238000011017 operating method Methods 0.000 claims 1
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
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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]
- H05B45/30—Driver circuits
- H05B45/345—Current stabilisation; Maintaining constant current
-
- 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]
- H05B45/30—Driver circuits
- H05B45/34—Voltage stabilisation; Maintaining constant voltage
-
- 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]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
- H05B45/3725—Switched mode power supply [SMPS]
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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
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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- Circuit Arrangement For Electric Light Sources In General (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Abstract
The invention discloses a novel railway signal LED lighting circuit and a working method thereof. The two circuits of the LED lamp are independently powered, and the lighting of the LED main wire and the LED auxiliary wire is not influenced mutually. The integrity of the main wire circuit and the auxiliary wire circuit can be monitored every time of electrification, and the reliability requirement of the railway bulb is met. The LED main wire and auxiliary wire point electrifying loop can be classified and monitored accurately, and different warning measures and switching measures can be taken according to different monitoring results. By adopting the control mode of LED balanced lighting, a certain lamp can not work for a long time, and the lighting service life of the bulb is prolonged.
Description
The technical field is as follows:
the invention relates to the technical field of LED lamp control, in particular to a novel railway signal LED lighting circuit and a working method thereof.
Background art:
the railway signal bulb requires one lamp with double filaments, the normal lighting is the main filament, and the main filament is switched to the auxiliary filament for lighting when the main filament fails. With the development of the LED technology, disc type LED and point type LED bulb schemes appear, wherein 90-120 phi 5 LED luminous tubes are used for disc type LEDs, and ten LED luminous tubes are used in parallel. Wherein 30% LED lamp pearl breaks down and sends out trouble and reports an emergency and asks for help or increased vigilance to continue to keep lighting a lamp with remaining lamp pearl. The point-mode LED lights the main wire and the auxiliary wire by using the high-power lamp beads, and the main wire LED is switched to the auxiliary wire LED to work after the fault. However, the disk LED and point LED bulb solution has the following disadvantages:
1. the disc type LED has the problem that partial light-out can not be accurately monitored, and the implementation and maintenance cost is high.
2. The point-type LED cannot monitor the integrity of the auxiliary wire in a non-working state, so that the integrity of the auxiliary wire cannot be guaranteed, the reliability of the double-wire bulb is greatly reduced, and the driving safety is affected.
The invention content is as follows:
the invention aims to provide a novel railway signal LED lighting circuit and a working method thereof, which can effectively realize that one path of fault is switched to the other path of fault when two paths of LEDs are independently lighted, wherein any path of fault can send out a fault alarm to remind maintenance personnel to process. Meanwhile, timing switching is realized under the condition that two paths of LEDs are normal, and the lighting state is balanced, so that the service life of the LED bulb is prolonged.
The invention is implemented by the following technical scheme: the utility model provides a novel railway signal LED circuit of lighting a lamp, includes control module, power module, constant current module, monitoring module, alarm module, communication module, control module and constant current module, monitoring module, alarm module, communication module electric connection, power module and control module, constant current module, monitoring module, alarm module, communication module electric connection, constant current module output electric connection LED bulb.
Preferably, the power module includes R type transformer, bridge rectifier, first linear voltage regulator, second linear voltage regulator, the power supply of indoor power supply screen is connected to R type transformer input, bridge rectifier is connected to R type transformer output, first linear voltage regulator, second linear voltage regulator are connected to the bridge rectifier output.
Preferably, the control module comprises a single chip microcomputer and a constant current control circuit which are connected in sequence.
Preferably, the constant current module comprises two independent constant current output loops.
Preferably, the LED bulb is a point type LED double filament bulb, including a point type LED double filament bulb of the primary and secondary circuit.
Preferably, the monitoring module adopts a sampling circuit based on an ADC chip.
Preferably, the alarm module comprises an optical coupling isolation circuit and a safety relay, the input end of the optical coupling isolation circuit is connected with the output end of the control module, the output end of the optical coupling isolation circuit is connected with the safety relay, and the output end of the safety relay is connected with the alarm.
Preferably, the communication module adopts a 485 or CAN communication chip.
The invention also provides a working method of the novel railway signal LED lighting circuit, which comprises the following steps:
step S1, electrifying the lighting unit, carrying out electrifying detection, and detecting the states of the main electrifying loop and the auxiliary electrifying loop according to the outage record information; if the current power-on loop fault is detected, the step S2 is carried out; if the current power-on loop is detected to be normal, the step S3 is carried out; wherein, the power-off record information is the record when the main power-on loop and/or the auxiliary power-on loop are/is disconnected;
step S2, detecting the fault of the current electrified loop, switching the current electrified loop to another loop to be electrified immediately after the current electrified loop is powered off;
step S3, detecting that the current power-on loop is normal, switching to another loop to be powered on after continuously lighting for 20S, continuously detecting another power-on loop, if the other power-on loop is normally kept lighting, and if the other power-on loop is in fault, powering off the other power-on loop;
step S4, judging whether the lighting time length of the power-on loop for keeping lighting reaches the preset balanced lighting period or not, and continuing lighting if the lighting time length does not reach the preset balanced lighting period; the preset balance lighting period is reached, and the lamp is switched to the other path for lighting under the state that no lamp filament is in alarm.
Preferably, after the power-on loops are powered off in the step 2 and the step 3, whether both the two loops are powered off is judged; if the double loops are powered off, the control module sends out a light-off alarm; and only one loop is powered off, and the control module sends a filament alarm and switches to another loop to work.
The invention has the advantages that:
the two circuits of the LED lamp are independently powered, and the lighting of the LED main wire and the LED auxiliary wire is not influenced mutually. The integrity of the main wire circuit and the auxiliary wire circuit can be monitored every time of electrification, and the reliability requirement of the railway bulb is met. The LED main wire and auxiliary wire point electrifying loop can be classified and monitored accurately, and different warning measures and switching measures can be taken according to different monitoring results. By adopting the control mode of LED balanced lighting, a certain lamp can not work for a long time, and the lighting service life of the bulb is prolonged.
Description of the drawings:
in order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic block diagram of a novel railway signal LED lighting circuit according to an embodiment of the present invention;
fig. 2 is a flowchart of a working method of a novel railway signal LED lighting circuit according to an embodiment of the present invention.
The specific implementation mode is as follows:
the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
As shown in fig. 1, a novel railway signal LED lighting circuit includes a control module 101, a power module 102, a constant current module 103, a monitoring module 104, an alarm module 105, and a communication module 106, where the control module 101 is electrically connected to the constant current module 103, the monitoring module 104, the alarm module 105, and the communication module 106, the power module 102 is electrically connected to the control module 101, the constant current module 103, the monitoring module 104, the alarm module 105, and the communication module 106, and an output end of the constant current module 103 is electrically connected to an LED bulb 107. In this embodiment, the constant current module 103 adopts a QX5248 constant current chip.
The power module 102 includes an R-type transformer, a bridge rectifier, a first linear regulator, and a second linear regulator, in this embodiment, the bridge rectifier employs a KBU808 chip, the first linear regulator employs an LM7812 three-terminal regulator, and the second linear regulator employs an LT1129-3.3 chip. The input end of the R-type transformer is connected with the indoor power supply screen for supplying power, the output end of the R-type transformer is connected with the bridge rectifier, and the output end of the bridge rectifier is connected with the first linear voltage stabilizer and the second linear voltage stabilizer. In this embodiment, the R-type transformer transforms the input power AC220V/AC110V to AC14V, wherein the bridge rectifier rectifies AC14V to DC14V, the first linear regulator stabilizes DC14V to DC12V to provide power for the constant current module and the alarm module, and the second linear regulator stabilizes DC14V to DC3.3V to provide power for the control module, the monitoring module, and the communication module.
The control module 101 comprises a single chip microcomputer and a constant current control circuit which are connected in sequence. In this embodiment, the singlechip adopts the STM32 chip to switch according to internal logic control constant current circuit, alarm circuit drive, communication information output, but is not limited to adopting the STM32 chip. The constant current control circuit adopts two paths of MOS switches to control the on and off of the constant current loop, but the constant current control circuit is not limited to the control of the MOS switches on the on and off of the constant current loop, and for example, a relay and a multi-path switching chip can also be adopted.
The constant current module 103 comprises two independent constant current output loops, and the two constant current output loops respectively supply power to the LED bulbs of the main loop and the auxiliary loop. The LED lamp has the main function of converting DC12V input power into constant current source output for lighting the LED lamp.
The LED bulb 107 is a point-type LED double-filament bulb, and includes LED bulbs of main and auxiliary circuits.
The monitoring module 104 adopts a sampling circuit based on an ADC chip to realize the monitoring of the state of the constant current loop, signal data is transmitted back to the MCU in real time, and the type of the ADC chip is not limited.
The alarm module 105 comprises an optical coupling isolation circuit and a safety type relay, the input end of the optical coupling isolation circuit is connected with the output end of the control module 101, the output end of the optical coupling isolation circuit is connected with the safety type relay, and the output end of the safety type relay is connected with the alarm. The single chip microcomputer outputs a signal through the optical coupling isolation circuit to drive the safety relay, and an alarm mode for controlling the triggering of the alarm loop is switched on through a relay contact, so that the function of wire breakage alarm is realized.
The communication module adopts 485 or CAN communication chips, IO signal output is carried out after the information of MCU output signals is converted into 485 or CAN communication protocols, and the communication module CAN be monitored by an upper computer in a centralized way.
In summary, as shown in fig. 1, the principle of the novel railway signal LED lighting circuit of the present invention is:
the power module 102 includes an R-type transformer, a bridge rectifier, a first linear regulator, and a second linear regulator, wherein the R-type transformer transforms an input power AC220V/AC110V to an AC14V, the bridge rectifier rectifies the AC14V into a direct current DC14V, the first linear regulator stabilizes the DC14V at DC12V to provide power for the constant current module and the alarm module, and the second linear regulator stabilizes the DC14V at DC3.3V to provide power for the control module, the monitoring module, and the communication module.
The monitoring module 104 adopts a sampling circuit based on an ADC chip to realize the monitoring of the state of the constant current loop, and signal data are transmitted back to the MCU in real time. When the constant current loop is monitored to have no current signal, the fault of the main energizing loop and/or the auxiliary energizing loop of the LED bulb is indicated. When the power-on loop fails, the alarm module conducts light-off alarm (faults of the main power-on loop and the auxiliary power-on loop) or filament alarm (faults of the main power-on loop and the auxiliary power-on loop). When any fault of the main power-on loop and the auxiliary power-on loop is detected, the control module 101 controls the two independent constant-current output loops of the constant-current module 103 to act, and only one normal loop is selected for conduction. In addition, the communication module adopts a 485 or CAN communication chip, the information (including monitoring information, fault information and switching information) of MCU output signals is converted into 485 or CAN communication protocols, and then IO signal output is carried out, so that the MCU output signals CAN be monitored by an upper computer in a centralized manner.
Example 2
As shown in fig. 2, the present invention further provides a working method of the novel railway signal LED lighting circuit, including:
step S1, electrifying the lighting unit, carrying out electrifying detection, and detecting the states of the main electrifying loop and the auxiliary electrifying loop according to the outage record information; if the current power-on loop fault is detected, the step S2 is carried out; if the current power-on loop is detected to be normal, the step S3 is carried out; wherein, the power-off record information is the record when the main power-on loop and/or the auxiliary power-on loop are/is disconnected;
step S2, detecting the fault of the current electrified loop, switching the current electrified loop to another loop to be electrified immediately after the current electrified loop is powered off;
step S3, detecting that the current power-on loop is normal, switching to another loop to be powered on after continuously lighting for 20S, continuously detecting another power-on loop, if the other power-on loop is normally kept lighting, and if the other power-on loop is in fault, powering off the other power-on loop;
step S4, judging whether the lighting time length of the power-on loop for keeping lighting reaches the preset balanced lighting period or not, and continuing lighting if the lighting time length does not reach the preset balanced lighting period; the preset balance lighting period is reached, and the lamp is switched to the other path for lighting under the state that no lamp filament is in alarm.
After the power-on loops are powered off in the step 2 and the step 3, judging whether both the two loops are powered off; if the double loops are powered off, the control module sends out a light-off alarm; and only one loop is powered off, and the control module sends a filament alarm and switches to another loop to work.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The utility model provides a novel railway signal LED circuit of lighting a lamp, its characterized in that, includes control module (101), power module (102), constant current module (103), monitoring module (104), alarm module (105), communication module (106), control module (101) and constant current module (103), monitoring module (104), alarm module (105), communication module (106) electric connection, power module (102) and control module (101), constant current module (103), monitoring module (104), alarm module (105), communication module (106) electric connection, constant current module (103) output electric connection LED bulb (107).
2. The novel railway signal LED lighting circuit as claimed in claim 1, wherein the power module (102) comprises an R-type transformer, a bridge rectifier, a first linear regulator and a second linear regulator, wherein an input end of the R-type transformer is connected with an indoor power supply screen for supplying power, an output end of the R-type transformer is connected with the bridge rectifier, and an output end of the bridge rectifier is connected with the first linear regulator and the second linear regulator.
3. The novel railway signal LED lighting circuit as claimed in claim 1, wherein the control module (101) comprises a single chip microcomputer and a constant current control circuit which are connected in sequence.
4. The novel railway signal LED lighting circuit as claimed in claim 1, wherein the constant current module (103) comprises two independent constant current output loops.
5. The novel railway signal LED lighting circuit as claimed in claim 1, wherein the LED bulb (107) is a point type LED double filament bulb, including a point type LED double filament bulb of a main loop and a secondary loop.
6. The novel railway signal LED lighting circuit as claimed in claim 1, wherein the monitoring module (104) adopts a sampling circuit based on an ADC chip.
7. The novel railway signal LED lighting circuit as claimed in claim 1, wherein the alarm module (105) comprises an optical coupling isolation circuit and a safety relay, the input end of the optical coupling isolation circuit is connected with the output end of the control module (101), the output end of the optical coupling isolation circuit is connected with the safety relay, and the output end of the safety relay is connected with the alarm.
8. The novel railway signal LED lighting circuit as claimed in claim 1, wherein the communication module adopts 485 or CAN communication chip.
9. A working method of a novel railway signal LED lighting circuit is characterized by comprising the following steps:
step S1, electrifying the lighting unit, carrying out electrifying detection, and detecting the states of the main electrifying loop and the auxiliary electrifying loop according to the outage record information; if the current power-on loop fault is detected, the step S2 is carried out; if the current power-on loop is detected to be normal, the step S3 is carried out; wherein, the power-off record information is the record when the main power-on loop and/or the auxiliary power-on loop are/is disconnected;
step S2, detecting the fault of the current electrified loop, switching the current electrified loop to another loop to be electrified immediately after the current electrified loop is powered off;
step S3, detecting that the current power-on loop is normal, switching to another loop to be powered on after continuously lighting for 20S, continuously detecting another power-on loop, if the other power-on loop is normally kept lighting, and if the other power-on loop is in fault, powering off the other power-on loop;
step S4, judging whether the lighting time length of the power-on loop for keeping lighting reaches the preset balanced lighting period or not, and continuing lighting if the lighting time length does not reach the preset balanced lighting period; the preset balance lighting period is reached, and the lamp is switched to the other path for lighting under the state that no lamp filament is in alarm.
10. The operating method of the novel railway signal LED lighting circuit according to claim 9, wherein after the power-on circuits in the steps 2 and 3 are powered off, whether both the power-on circuits are powered off is judged; if the double loops are powered off, the control module sends out a light-off alarm; and only one loop is powered off, and the control module sends a filament alarm and switches to another loop to work.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111079172.9A CN113630936A (en) | 2021-09-15 | 2021-09-15 | Novel railway signal LED lighting circuit and working method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111079172.9A CN113630936A (en) | 2021-09-15 | 2021-09-15 | Novel railway signal LED lighting circuit and working method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2023126029A3 (en) * | 2022-08-02 | 2023-08-24 | 北京全路通信信号研究设计院集团有限公司 | Signal light, system and control method |
| WO2023207680A1 (en) * | 2022-04-24 | 2023-11-02 | 厦门荣汇源科技有限公司 | Led railway signal lamp system and intelligent lighting unit thereof |
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