CN107182162A - Intelligence direct filament relay - Google Patents
Intelligence direct filament relay Download PDFInfo
- Publication number
- CN107182162A CN107182162A CN201710390086.7A CN201710390086A CN107182162A CN 107182162 A CN107182162 A CN 107182162A CN 201710390086 A CN201710390086 A CN 201710390086A CN 107182162 A CN107182162 A CN 107182162A
- Authority
- CN
- China
- Prior art keywords
- relay
- current
- circuit
- filament
- chip microcomputer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
-
- 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
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Landscapes
- Train Traffic Observation, Control, And Security (AREA)
Abstract
The present invention relates to a kind of intelligence direct filament relay, the JZXC type filament relays in alternative railway signal lamp circuit.Including single-chip microcomputer signal process circuit, dynamic pulse drive circuit and current detection circuit, the current detection circuit is made up of TVS pipe in parallel with isolating current sensor connection；The dynamic pulse drive circuit is connected with performing relay；The current detection circuit, single-chip microcomputer signal process circuit connection power circuit.Powered using KZ KF, with failure safe function, it is ensured that in the case of any lighting and fault, relay can reliably be fallen.
Description
Technical field
The present invention relates to railway signal field, especially a kind of intelligence direct filament relay, this relay is exclusively used in
The state of Along Railway signal lamp is monitored, railway signal interlocking system is fed back to.Available for public backbones railway, factories and miness railway,
The fields such as local railway, city underground circuit, city railroad circuit.
Background technology
Railway signal lamp circuit supervises outdoor letter using filament relay (such as JZXC-H18, JZXC-H16/16) always
Whether number lighting is normal.When light is normal, filament relay is picked up；When turning off the light, filament relay is fallen.Due to circuit and after
The limitation of the opering characteristic of electric apparatus, in the case of cable fault, ignition device failure, usually can not effectively be supervised.For example, outdoor
The short circuit of lighting transformer secondary output, causes to turn off the light, heater current increase, but due to the influence of cable resistance, electric current is less than 0.5A, string
Connect fuse not break, relay is normally picked up.And for example, transformer secondary output is opened a way, and causes to turn off the light, due to no-load transformer electric current mistake
Greatly or cable leakage current is excessive, more than the holding electric current of relay, relay will also keep picking up.I.e. when lighting is abnormal
Filament relay can not reliably be fallen, and caused outdoor display and indoor expression inconsistent, easily caused accident potential.
Chinese patent CN 200959024Y, disclose entitled filament supervisor of railway signal.Also current sensor is utilized
Filament supervision is carried out, but function is simple, does not have display, monitoring and communication function.Conventional voltage drives common relay, failure peace
Full property has much room for improvement.
Chinese patent CN 205469123U, disclose a kind of peace of entitled alternative railway signal filament relay
Full monitoring, alarming control device.Also filament supervision is carried out using current sensor, but device take part in the lighting control to signal lamp
System, when control section failure, can cause to turn off the light, and signal is turned off the light can cause serious potential safety hazard under certain condition,
Scheme is simultaneously impracticable.
The content of the invention
It is an object of the invention to provide a kind of relay that can accurately set and pick up electric current and fall current value, control signal
Lamp being lighted and closes.
The present invention concrete technical scheme be：A kind of intelligence direct filament relay, including single-chip microcomputer signal process circuit
1st, dynamic pulse drive circuit 4 and current detection circuit 2, the current detection circuit 2 are passed by TVS pipe 12 in parallel with isolating electric current
The connection composition of sensor 13；The dynamic pulse drive circuit 4 is connected with performing relay 5；The current detection circuit 2, monolithic
Machine signal processing circuit 1 connects power circuit 3.
Further, the single-chip microcomputer signal process circuit 1 is connected with isolation serial communication interface 6.
Further, the connection of the single-chip microcomputer signal process circuit 1 configuration switch sample circuit 7, unit state indicating circuit 8.
The switchgear distribution mode of operation safety and is turned off the light failure to turn off the light, when be operated in turn off the light safe mode when, cable cut causes
Electric current is 0, although performs relay and falls, but status information makees normal process, it is to avoid false alarm.The 4 of indicator lamp instruction device
Individual state：Power supply is normal, working properly, turn off the light, current anomaly.Power supply status, signal processing single chip work are represented respectively just
Turn off the light relay full state, semaphore bright light of normal relay energized state, signal trouble needs repairing state extremely.
Further, the connection electric current digital-scroll technique of single-chip microcomputer signal process circuit 1 circuit 9, aobvious with heater current number
Show function, display heater current currency, and recording status change information and current curve in real time.And it is serial logical with isolation
Communication interface, can be current heater current and this relay operating state data and record data is sent to centralized signal supervision system
System, or station heater current centralized display device.
Further, the isolation current sensor 13 is the separate current sensor of one or dual redundant, detects semaphore point
Lamp current, when electric current in acceptability limit (lower limit<Electric current<The upper limit) when, relay energized is driven, informs that interlocking of signals system is believed
Number lighting is normal, and beyond acceptability limit, then relay is fallen.
Further, the dynamic pulse drive circuit 4 is to use failsafe configuration, dynamic pulse driving.It is described perform after
Electrical equipment 5 using failure safe gravity type voltage-type relay, it is ensured that it is in office why hinder under the conditions of, relay can reliably be fallen.
Dynamic pulse drive circuit 4 is so that, for principal mode, device takes an iron together with relay 5 is performed in same relay
Road signal standards relay position, it is convenient directly to replace.When position is loose, using dynamic pulse drive circuit 4 and it can also hold
The mode that row relay 5 is installed separately.
Further, the single-chip microcomputer signal process circuit 1, when main thread performs abnormal or deadlock, dynamic pulse output is different
Often, relay 5 is performed to fall.
Further, the application of intelligence direct relay of the present invention, wiring and JZXC-H18 relays are compatible, can directly replace
Generation.Power supply uses direct current 24V (KZ-KF) voltage, and increase mating KZ-KF power lines can work, even if semaphore is turned off the light, also can
Normal work.Power supply is equipped with fuse, when relay causes source current to increase extremely, and fuse, which disconnects, prevents failure from expanding
Greatly.
Further, the application of intelligence direct relay of the present invention, it is adaptable to AC or DC lamp circuit, need to only be equipped with corresponding
Current sensor be applicable exchange or DC current sampling.Electric current has overvoltage protection lightning protection measures using circuit entrance, protects
Protection unit is damaged from overvoltage.
In addition, the present invention uses quick startup function, it is not more than from the electric current actuation time up to standard to execution relay adhesive
100mS, meets the requirement that interlocking of signals system is checked filament.
Intelligence direct relay of the present invention have it is delayed fall function, after the current vanishes of monitoring, relay delay fall, prolong
When the time be not less than 2S, it is ensured that in flashing light state, relay keeps picking up.Meet filament of the interlocking of signals system to flashing signal
The requirement of inspection.
Intelligence direct filament relay of the present invention, can accurately set picking up electric current and falling current value for relay.It
It can ensure that filament relay is fallen when lighting cable open circuit, short circuit and light source failure, interlocking fed back signal in time
System.Apparatus of the present invention use any failure of failsafe mode, system itself and monitoring device, can fall relay
Under, it is safe and reliable.Intelligence direct filament relay also there is heater current to show transfer function, is equipped with after supervision main frame, has
Heater current collection, record, transfer function, and can be connected with centralized signal supervision system, increase lighting current monitoring function.Intelligence
Can monitoring relay be arranged on station in Machine Room, can substitute now widely used JZXC-H18, JZXC-H16/16 filament after
Electrical equipment.Adapt to various pairs of filament light signals, especially suitable railway LED signal machine.
Brief description of the drawings
Fig. 1：Intelligence direct filament relay schematic diagram.
Fig. 2：Intelligence direct filament relay application schematic diagram.
In figure：1- single-chip microcomputer signal process circuits；2- current detection circuits；3- power circuits；4- dynamic pulses driving electricity
Road；5- performs relay；6- isolates serial communication interface；7- configuration switch sample circuits；8- unit state indicating circuits；9- electricity
Fluxion code display circuit；The serial communication interface of 10- isolation；11- fuses F1；12- parallel connection TVS pipes；13- isolates current sense
Device；Numeral in Fig. 1 in rectangle frame is the label of intelligence direct filament relay base terminal, consistent with former filament relay.
In Fig. 2,14- intelligent relays；15- interlock control circuits (lamp circuit)；16- signal lamps；17 filament extension sets；18- collection
Middle monitoring system.
Embodiment
The intelligence direct filament relay of the present invention is applied in railway signal interlocking system, as depicted in figs. 1 and 2, by
Isolate current sensor 13, single-chip microcomputer signal process circuit 1, perform relay 5 (JWXC-1700), dynamic pulse drive circuit
4th, electric current digital-scroll technique circuit 9, configuration switch sample circuit 7, unit state indicating circuit 8, isolation serial communication interface 6, electricity
The grade of source circuit 3 is constituted.By serial core formula current sensor 13, the heater current accessed by 63-53 is accurately monitored, monolithic
Machine is compared the electric current and the bound of setting of collection, defeated by dynamic driver circuit 4 when electric current is in prescribed limit
Go out drive signal, control performs relay 5 and picked up, when current anomaly, then close output, it is ensured that perform relay 5 and fall.It is single
Piece machine software is designed using failure safe, and when main thread performs abnormal or deadlock, dynamic pulse output abnormality performs relay
Fall.Single-chip microcomputer is designed to quick startup, is not more than 100mS from the electric current startup time up to standard to execution relay adhesive.It is single
Piece machine Software for Design has the delayed disappearance of dynamic pulse, after the current vanishes of monitoring, fall the delay of relay 5, delay time
Not less than 2S, it is ensured that when flashing light electric current is discontinuous, relay keeps picking up.Meet lamp of the interlocking of signals system to flashing signal
The requirement that silk is checked.Perform gravity type voltage-type relay (such as JWXC-1700) of the relay 5 using failure safe, it is ensured that
It is in office why hinder under the conditions of, relay can reliably be fallen.Device wiring and JZXC-H18 relays are compatible, can directly substitute.
Power supply is powered using KZ-KF to power supply 3, and increase mating KZ-KF power lines can work, also can be normal even if semaphore is turned off the light
Work.Power supply is equipped with fuse 11-F1, when relay causes source current to increase extremely, and fuse, which disconnects, prevents failure from expanding
Greatly.In order to improve reliability, the sampling of two-way current redundant can be designed, fault alarm processing is done when Dang Erlu is inconsistent.And electricity
AC or DC sensor can be coupled according to heater current property in the sensor of stream detection interface mating.Electric current is entered using circuit
Mouth has overvoltage protection lightning protection measures, and TVS pipe 12 such as in parallel, protection device is damaged from overvoltage.The instruction device of indicator lamp 8
4 states：Power supply is normal, working properly, turn off the light, current anomaly.Power supply status, signal processing single chip work are represented respectively
Normal relay picks up turn off the light relay full state, semaphore bright light of state, signal trouble and needed repairing extremely state.Number
Code display 9 shows heater current currency in real time.And with the serial communication interface 10 of isolation, heater current and this relay
Work state information and record data are sent to centralized signal supervision system, or station heater current centralized display device.
The current sample line 63-53 of intelligence direct filament relay 14 is serially connected in the lighting loop of semaphore.Lighting is returned
Road concatenates 0.5A fuses simultaneously.The power supply of semaphore intelligence direct filament relay 14 concentrates the KZ-KF for being connected to power supply panel in standing.
In standing the communication interface of semaphore intelligence direct filament relay 14 concentrate be connected to filament extension set 17 RS485 interfaces (or other
Serial ports such as DALI buses).Filament extension set 17 can all semaphores of centralized displaying lighting current and alarm condition, and can inquire about and go through
The Records of the Historian is recorded.Filament extension set 17 connects centralized signal supervision system 18 by CAN.In intelligence direct filament relay 14 and letter
It is lamp circuit 15 i.e. interlock control circuit between signal lamp 16, control signal lamp being lighted and closing.Intelligence direct filament relay
The execution relay tip of device 14 is sampled for signal chain circuit, with the ignition device of confirmation signal.
To sum up, intelligence direct filament relay of the present invention is a kind of Intelligent current relay, is substituted in railway signal lamp circuit
JZXC type filament relays.The present invention is powered using KZ-KF, with failure safe function, it is ensured that in any lighting and circuit
In the case of failure, relay can reliably be fallen.The malfunction of semaphore is accurately notified to give interlocking of signals control system, in time
Light and forbid light, ensure railway operation safety.There is monitoring and warning function and communication interface simultaneously, filament is shown in real time
Electric current, and electric current is transmitted to centralized signal supervision system, instruct signal maintenance.Adapt to various pairs of filament colour-light signals lamps including
Flashlight, especially suitable railway LED signal machine.
Claims (10)
1. a kind of intelligence direct filament relay, it is characterised in that driven including single-chip microcomputer signal process circuit (1), dynamic pulse
Dynamic circuit (4) and current detection circuit (2), the current detection circuit (2) is by TVS pipe in parallel (12) with isolating current sensor
(13) connection composition；The dynamic pulse drive circuit (4) is connected with performing relay (5)；The current detection circuit (2),
Single-chip microcomputer signal process circuit (1) connection power circuit (3).
2. a kind of intelligence direct filament relay according to claim 1, it is characterised in that the single-chip microcomputer signal processing
Circuit (1) is connected with isolation serial communication interface (6), and heater current and this relay operating state data is current and record number
According to being sent to centralized signal supervision system, or station heater current centralized display device.
3. a kind of intelligence direct filament relay according to claim 1, it is characterised in that the single-chip microcomputer signal processing
Circuit (1) connection configuration switch sample circuit (7), unit state indicating circuit (8).
4. a kind of intelligence direct filament relay according to claim 1, it is characterised in that the single-chip microcomputer signal processing
Circuit (1) connection electric current digital-scroll technique circuit (9), with heater current digital display function, display heater current is current in real time
Value, and recording status change information and current curve.
5. a kind of intelligence direct filament relay according to claim 1, it is characterised in that the isolation current sensor
(13) be one or dual redundant separate current sensor, detect Signal lighting electric current, when electric current in acceptability limit (lower limit
<Electric current<The upper limit) when, relay energized is driven, informs that the lighting of interlocking of signals system signal is normal, beyond acceptability limit then relay
Device is fallen.
6. a kind of intelligence direct filament relay according to claim 1, it is characterised in that the dynamic pulse driving electricity
Road (4) is to use failsafe configuration, dynamic pulse driving；The gravity type electricity that relay (5) is performed using failure safe
Die mould relay, it is in office why hinder under the conditions of, relay can reliably be fallen.
7. a kind of intelligence direct filament relay according to claim 1, it is characterised in that the single-chip microcomputer signal processing
Circuit (1), when main thread performs abnormal or deadlock, dynamic pulse output abnormality performs relay (5) and fallen.
8. a kind of intelligence direct filament relay according to claim 1, it is characterised in that power supply is using direct current 24V
(KZ-KF) voltage, mating KZ-KF power lines work, also can normal work when semaphore is turned off the light；Power supply is equipped with fuse, when
When relay causes the source current to increase extremely, fuse, which disconnects, prevents failure propagation.
9. a kind of application of intelligence direct filament relay according to claim 1, it is characterised in that suitable for exchange or
Direct current lamp circuit, is equipped with corresponding current sensor and is applicable exchange or DC current sampling；Electric current is had using circuit entrance
Overvoltage protection lightning protection measures, protection device is damaged from overvoltage.
10. the application method of a kind of intelligence direct filament relay according to claim 1, it is characterised in that using fast
Fast startup function, is not more than 100mS from the electric current actuation time up to standard to execution relay adhesive；When the current vanishes of monitoring
Afterwards, relay delay is fallen, and delay time is not less than 2S, meets the requirement that interlocking of signals system is checked filament；In flashing light shape
State, relay keeps picking up；Meet the requirement that interlocking of signals system is checked the filament of flashing signal.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010312963.0A CN111526633A (en) | 2017-05-27 | 2017-05-27 | Intelligent monitoring filament relay |
| CN201710390086.7A CN107182162A (en) | 2017-05-27 | 2017-05-27 | Intelligence direct filament relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710390086.7A CN107182162A (en) | 2017-05-27 | 2017-05-27 | Intelligence direct filament relay |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010312963.0A Division CN111526633A (en) | 2017-05-27 | 2017-05-27 | Intelligent monitoring filament relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107182162A true CN107182162A (en) | 2017-09-19 |
Family
ID=59836015
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010312963.0A Pending CN111526633A (en) | 2017-05-27 | 2017-05-27 | Intelligent monitoring filament relay |
| CN201710390086.7A Pending CN107182162A (en) | 2017-05-27 | 2017-05-27 | Intelligence direct filament relay |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010312963.0A Pending CN111526633A (en) | 2017-05-27 | 2017-05-27 | Intelligent monitoring filament relay |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN111526633A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107728563A (en) * | 2017-09-29 | 2018-02-23 | 卡斯柯信号有限公司 | A kind of filament alarm detector and method based on PLC technology |
| CN109587912A (en) * | 2018-12-03 | 2019-04-05 | 北京蓝天创通科技有限责任公司 | Utilize the alarm for burnout of a main filament system of the method composition of analysis lighting current feature |
| CN109661093A (en) * | 2019-02-28 | 2019-04-19 | 泰安紫波光电科技有限公司 | A kind of UV lamp power control |
| CN110913527A (en) * | 2019-11-12 | 2020-03-24 | 上海铁大电信科技股份有限公司 | Supervision driving circuit |
| CN114275006A (en) * | 2021-11-16 | 2022-04-05 | 昆明铁路局集团科学技术研究所 | Locomotive signal decoding equipment and method |
| CN107728563B (en) * | 2017-09-29 | 2024-06-04 | 卡斯柯信号有限公司 | Filament alarm detection device and method based on PLC technology |
Citations (3)
| 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 |
| CN101640956A (en) * | 2009-03-18 | 2010-02-03 | 河海大学常州校区 | Design method of intelligent power supply electronic converter of general-type railway signal lamp |
| CN205793576U (en) * | 2016-05-25 | 2016-12-07 | 南京铁道职业技术学院 | A kind of test circuit of Signal lighting device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201038723Y (en) * | 2007-05-18 | 2008-03-19 | 忻兵 | Railway signal dedicated intelligent circuit breaker |
| CN106251729B (en) * | 2016-08-23 | 2022-10-25 | 山东交通学院 | Train arrival semaphore circuit analog system that lights a lamp |
-
2017
- 2017-05-27 CN CN202010312963.0A patent/CN111526633A/en active Pending
- 2017-05-27 CN CN201710390086.7A patent/CN107182162A/en active Pending
Patent Citations (3)
| 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 |
| CN101640956A (en) * | 2009-03-18 | 2010-02-03 | 河海大学常州校区 | Design method of intelligent power supply electronic converter of general-type railway signal lamp |
| CN205793576U (en) * | 2016-05-25 | 2016-12-07 | 南京铁道职业技术学院 | A kind of test circuit of Signal lighting device |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107728563A (en) * | 2017-09-29 | 2018-02-23 | 卡斯柯信号有限公司 | A kind of filament alarm detector and method based on PLC technology |
| CN107728563B (en) * | 2017-09-29 | 2024-06-04 | 卡斯柯信号有限公司 | Filament alarm detection device and method based on PLC technology |
| CN109587912A (en) * | 2018-12-03 | 2019-04-05 | 北京蓝天创通科技有限责任公司 | Utilize the alarm for burnout of a main filament system of the method composition of analysis lighting current feature |
| CN109661093A (en) * | 2019-02-28 | 2019-04-19 | 泰安紫波光电科技有限公司 | A kind of UV lamp power control |
| CN110913527A (en) * | 2019-11-12 | 2020-03-24 | 上海铁大电信科技股份有限公司 | Supervision driving circuit |
| CN114275006A (en) * | 2021-11-16 | 2022-04-05 | 昆明铁路局集团科学技术研究所 | Locomotive signal decoding equipment and method |
| CN114275006B (en) * | 2021-11-16 | 2024-05-17 | 昆明铁路局集团科学技术研究所 | Locomotive signal decoding equipment and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111526633A (en) | 2020-08-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107182162A (en) | Intelligence direct filament relay | |
| CN105305620B (en) | A kind of breaker closing control loop template monitoring system | |
| CN204666788U (en) | A kind of relay checking seat | |
| CN101546902A (en) | Device for monitoring working state of fuse | |
| CN210714273U (en) | Subway shielded door monitoring devices | |
| CN106793421A (en) | A kind of navaid loop fault register control, method and navaid lamp control system | |
| CN106291342A (en) | The on off state detection method of a kind of protective relaying device and device | |
| CN206231408U (en) | A kind of high ferro semaphore real-time monitoring and alarming | |
| CN201194134Y (en) | Signal light fault alarm positioning device | |
| CN102658784A (en) | Control method for one-way conduction device with arc extinction function | |
| CN108011348A (en) | Low-voltage intelligent distribution Control protection system and its control guard method | |
| CN203535152U (en) | Recessive defect detecting device for external starting contacts of failure protection equipment | |
| CN201230196Y (en) | Apparatus for monitoring working state of fuse | |
| CN106774026A (en) | A kind of intelligent line controller | |
| CN105172843B (en) | Interface structure between disaster-preventing foreign matter invasion limiting system and signal system of high-speed rail and method of interface structure | |
| CN103682999B (en) | A kind of switch cubicle separating brake blocking compartment system | |
| CN110426621A (en) | A kind of the detection instruction device and method of platform door system safety return circuit abort situation | |
| CN202083926U (en) | Device based on hard wire control and used for rapidly recognizing city track traffic vehicle malfunction door | |
| CN207114676U (en) | The short circuit of EKL cable-types and earth-fault indicator | |
| CN201805221U (en) | Automatic isolating and positioning device for ground fault of direct current system | |
| CN106019992A (en) | System debugging method for high speed rail disaster prevention and foreign object intrusion prevention system | |
| CN205910276U (en) | Tower machine electric system automatic diagnosy device | |
| CN101699305A (en) | Automatic circuit fault diagnosis and alarm device | |
| CN103336166A (en) | Safe contact rail voltage monitoring device provided with caution lamp | |
| BG109785A (en) | Led signal lamps and method for reliable control of led signal lamps |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170919 |
|
| RJ01 | Rejection of invention patent application after publication |