CN203504831U - Switching and checking circuit for LED signal mechanism - Google Patents
Switching and checking circuit for LED signal mechanism Download PDFInfo
- Publication number
- CN203504831U CN203504831U CN201320614550.3U CN201320614550U CN203504831U CN 203504831 U CN203504831 U CN 203504831U CN 201320614550 U CN201320614550 U CN 201320614550U CN 203504831 U CN203504831 U CN 203504831U
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- China
- Prior art keywords
- circuit
- contact
- relay
- switching
- utility
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- Expired - Lifetime
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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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- Train Traffic Observation, Control, And Security (AREA)
Abstract
The utility model provides a switching and checking circuit which is used for an LED signal mechanism. The circuit comprises a change-over switch and a relay which are connected in series, wherein the relay comprises a first contact and a second contact which switch synchronously, the first contact is connected to and cuts off a main LED group short-circuit/open-circuit trigger circuit, one end of the second contact is grounded, and the other end of the second contact is connected to a singlechip reset circuit. In the switching and checking circuit provided by the utility model, the change-over switch is switched off at ordinary times, and the relay is at a de-energized state, thereby being capable of reducing the system power consumption, and reducing the system failure rate. Meanwhile, a main-auxiliary switching experiment does not need operation indoor and not affect indoor interlocking information.
Description
Technical field
The utility model relates to railway signaling mechanism, is specifically related to the switching check circuit for LED signaling gear.
Background technology
Point-source of light type LED railway signaling mechanism, utilizes two groups of LED of major-minor, the major-minor silk of simulation incandescent lamp bulb.Main LED group is lighted under normal circumstances, when main LED group breaks down, is automatically transformed into secondary LED group and lights, and synchronous signal machine is reported to the police to indoor.Once secondary LED group is lighted, according to security design principle, no matter the whether real fault of main LED group, can not return main LED group and light.Major and minor LED group is switched check circuit, can simulate main LED group fault, is switched to secondary LED lamp group and lights.Due to the real fault of main LED group now, can cause semaphore to indoor transmission false alarm information, can get back to the state of the normal work of main LED group after therefore requiring on-the-spot major-minor switching tests complete.
Summary of the invention
The purpose of this utility model is to provide a kind of switching check circuit for LED signaling gear major-minor LED test.
According to the technical solution of the utility model, a kind of inspection commutation circuit, for LED signaling gear, this circuit comprises diverter switch and the relay of series connection, wherein this relay comprises two synchronous the first contact and the second contacts of switching, described the first contact is accessed and is cut-off main LED group short/open circuits for triggering, described second one end, contact ground connection and other end access reset circuit of SCM.
Wherein, described reset circuit of SCM and then be connected to monolithic processor resetting interface.
Further, described switching check circuit comprises the relay power supply circuits that are connected between described diverter switch and described relay.
Technique effect of the present utility model is: change over switch disconnects at ordinary times, and relay, in power failure state, can reduce system power dissipation, and reduces system failure rate; Major-minor switches experiment does not need indoor operation, and does not affect indoor lock file; The method of operating habit and traditional incandescent lamp bulb semaphore test major-minor filament is basically identical.
Accompanying drawing explanation
Fig. 1 is according to the schematic diagram of the utility model one embodiment.
Embodiment
Below in conjunction with preferred embodiment of the present utility model, the utility model is described.Many concrete details in description below, have been enumerated.Yet, it will be appreciated by those skilled in the art that the utility model also can not adopt some or all in these details and realize.In some situations, known technology is not described to avoid unnecessary obscuring.
Fig. 1 illustrates according to major-minor LED of the present utility model and switches check circuit schematic diagram.Switch check circuit 100, comprise relay power supply circuits, be used for input voltage vin to be converted to and to drive the required direct voltage of relay R 1, it can adopt existing any suitable circuit.This switching check circuit 100 also comprises diverter switch SW1, connects with relay R 1.Voltage stabilizing didoe D is in parallel with relay R 1.
Relay R 1 comprises the contact of two interlocks, the first contact J1 and the second contact J2.Wherein J1 accesses main LED group short/open circuits for triggering, plays contactor effect.J2 one end ground connection, the other end is connected to reset circuit of SCM, described reset circuit of SCM and then be connected to monolithic processor resetting interface.Monolithic processor resetting is Low level effective.
Generally, diverter switch SW1 is in off-state, and now relay R 1 is positioned at a place in power failure state J1 contact, disconnects, and does not affect control system function.J2 contact is positioned at c point ground state, now reset trigger circuit output high level, and single-chip microcomputer is unaffected.
When checking, diverter switch SW1 is become to on-state, relay R 1 power supply, contact J1 and J2 change in location.Wherein, J1 contact is transformed into b place, i.e. on-position, and the short circuit/circuits for triggering work of opening circuit of main LED group, simulates main LED group fault, lights secondary LED group.J2 contact is transformed into d place open position, and now reset trigger circuit is still exported high level, and single-chip microcomputer is unaffected.
After checking, diverter switch SW1 is disconnected again, now relay R 1 is again in power failure state.J1 gets back to contact a place, and open position, does not affect control system function.J2 switch is got back to c place ground state, and now reset trigger circuit output low level, after monolithic processor resetting, lights main LED group.
In sum, major-minor LED group is switched check circuit can not only simulate main LED group fault, is switched to secondary LED lamp group and lights, and can get back to the state of the normal work of main LED group, has reached site inspection requirement.And the electric elements in the utility model all can adopt known any suitable device.
In conjunction with embodiment, the utility model be have been described in detail above.Yet, it will be appreciated by those skilled in the art that and in scope of the present utility model, also have some modifications and equivalent way.Therefore, claim of the present utility model should be interpreted as comprising all such modifications and equivalent way.
Reference numeral
100 check commutation circuit
Claims (3)
1. one kind checks commutation circuit, for LED signaling gear, it is characterized in that, this circuit comprises diverter switch and the relay of series connection, wherein this relay comprises two synchronous the first contact and the second contacts of switching, described the first contact is accessed and is cut-off main LED group short/open circuits for triggering, described second one end, contact ground connection and other end access reset circuit of SCM.
2. inspection commutation circuit according to claim 1, is characterized in that, described reset circuit of SCM and then be connected to monolithic processor resetting interface.
3. inspection commutation circuit according to claim 1, its feature exists, and further comprises the relay power supply circuits that are connected between described diverter switch and described relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320614550.3U CN203504831U (en) | 2013-09-29 | 2013-09-29 | Switching and checking circuit for LED signal mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320614550.3U CN203504831U (en) | 2013-09-29 | 2013-09-29 | Switching and checking circuit for LED signal mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203504831U true CN203504831U (en) | 2014-03-26 |
Family
ID=50335768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320614550.3U Expired - Lifetime CN203504831U (en) | 2013-09-29 | 2013-09-29 | Switching and checking circuit for LED signal mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203504831U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106483421A (en) * | 2016-11-29 | 2017-03-08 | 深圳市燕麦科技股份有限公司 | Open-short circuit system and method for testing between one kind is point-to-point |
| CN106535429A (en) * | 2015-09-11 | 2017-03-22 | 松下知识产权经营株式会社 | Lighting control device, lighting device, and vehicle |
| CN110320012A (en) * | 2019-08-20 | 2019-10-11 | 肖义俊 | A kind of LED intelligence manufacture detection device |
-
2013
- 2013-09-29 CN CN201320614550.3U patent/CN203504831U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106535429A (en) * | 2015-09-11 | 2017-03-22 | 松下知识产权经营株式会社 | Lighting control device, lighting device, and vehicle |
| CN106483421A (en) * | 2016-11-29 | 2017-03-08 | 深圳市燕麦科技股份有限公司 | Open-short circuit system and method for testing between one kind is point-to-point |
| CN110320012A (en) * | 2019-08-20 | 2019-10-11 | 肖义俊 | A kind of LED intelligence manufacture detection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140326 |