CN106546914B - A kind of CBTC system trackside relay rack FMECA method - Google Patents
A kind of CBTC system trackside relay rack FMECA method Download PDFInfo
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- CN106546914B CN106546914B CN201610942047.9A CN201610942047A CN106546914B CN 106546914 B CN106546914 B CN 106546914B CN 201610942047 A CN201610942047 A CN 201610942047A CN 106546914 B CN106546914 B CN 106546914B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3277—Testing of circuit interrupters, switches or circuit-breakers of low voltage devices, e.g. domestic or industrial devices, such as motor protections, relays, rotation switches
- G01R31/3278—Testing of circuit interrupters, switches or circuit-breakers of low voltage devices, e.g. domestic or industrial devices, such as motor protections, relays, rotation switches of relays, solenoids or reed switches
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- Train Traffic Observation, Control, And Security (AREA)
Abstract
The invention discloses a kind of CBTC system trackside relay rack FMECA methods, comprising: the structure, the failure mode of device of circuit in clear trackside relay rack, and establish FMECA database；It is influenced with PSpice software emulation failure；Improve FMECA database.The present invention improves accuracy and analysis efficiency, realizes the partial automation of FMECA.
Description
Technical field
The present invention relates to track traffic signal fields.
Background technique
FMECA (Failure Mode Effects and Criticality Analysis, failure mode effect and danger
Evil analysis) it is used as a kind of common analysis method, it is widely used in safety-related circuit design process.It, can by FMECA
To assess the failure mould of each device level in a system to concern safely, it can identify the harm in design, can be directed to
Mitigation strategy is formulated in harm caused by failure, it is ensured that the safety of whole system can be threatened without a kind of Single Point of Faliure.
CBTC (Communications Based Train Control, the train automatic controlling system based on communication) system
System is the rail traffic signal system of current extensive utilization, and interlocking subsystem is with trackside equipment interface by relay rack come real
It is existing, wherein containing the devices such as signal lighting circuit, turnout start circuit.(such as operation track switch, letter is lighted as interlock command
Number machine etc.) execution circuit, these circuits security level with higher, the FMECA for these circuits is in safety analysis
Essential link.
The experience of analysis personnel is relied on mostly for the FMECA of relay rack to carry out at present, compares circuit drawing, directly
Fill in analysis result.This analysis mode is easy to operate, and but there are the following problems:
1) analytic process places one's entire reliance upon personnel's micro-judgment, higher to analysis personnel requirement, and accuracy is difficult to ensure；
2) fault mode covered is limited；
3) for complicated circuit, it is difficult to immediately arrive at analysis result.
Summary of the invention
The purpose of the present invention is to provide a kind of CBTC system trackside relay rack FMECA methods, improve accuracy and divide
Efficiency is analysed, realizes the partial automation of FMECA.
Realizing the technical solution of above-mentioned purpose is:
A kind of CBTC system trackside relay rack FMECA method, comprising:
The structure of circuit in trackside relay rack, the failure mode of device are specified, and establishes FMECA database；
It is influenced with PSpice software emulation failure；
Improve FMECA database.
In above-mentioned CBTC system trackside relay rack FMECA method, described is (serial for microcomputer with PSpice
Universal circuit analyze program) software emulation failure influence, comprising:
The characterisitic parameter of acquisition device；
Device simulation model is established in PSpice software；
Artificial circuit is built in PSpice software, operation emulation obtains the first simulation result；
According to specific failure mode, successively establish and need each device analyzed, corresponding to each failure mode
Defective device model；
In the artificial circuit built, normal device successively is replaced with each defective device model, it is imitative to obtain second
True result；
It makes comparisons to the second simulation result with the first simulation result, obtains the impact analysis of equipment/subsystem irrespective of size as a result, filling out
Enter FMECA database.
In above-mentioned CBTC system trackside relay rack FMECA method, described improves FMECA database, comprising:
According to the impact analysis of equipment/subsystem irrespective of size as a result, obtaining system-level impact analysis as a result, filling FMECA number
According to library；
According to system-level impact analysis as a result, the form of expression of analysis failure, inserts FMECA database.
The beneficial effects of the present invention are: the present invention is directed to the circuit in CBTC system trackside relay rack, with PSpice
Software carries out simulation analysis, obtains the failure effect analysis (FEA) result of circuit-level.Effectively improve the accuracy and analysis effect of FMECA
Rate can cover most fault modes.For complicated circuit design, it is clear, intuitive that the failure of acquisition influences.
Detailed description of the invention
Fig. 1 is the flow chart of CBTC system trackside relay rack FMECA method of the invention；
Fig. 2 is the circuit diagram of four display signal lighting circuits；
Fig. 3 is the circuit diagram of four display Signal lighting artificial circuits；
Fig. 4 is the schematic diagram of the semaphore current waveform worked normally；
Fig. 5 is the semaphore current waveform that relay ADJ working value increases；
Fig. 6 is the semaphore current waveform increased relay LJ release time.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings.
Referring to Fig. 1, CBTC system trackside relay rack FMECA method of the invention, including the following steps:
Step 1, defined analysis range, specifically includes:
Step S1, the specific structure of clearly analyzed object (circuit in trackside relay rack).With four display shown in Fig. 2
Signal lighting circuit for, including 3 lighting relays, 3 filament state relays and semaphore etc..Lighting after
The coil of electric appliance is controlled by the lighting order of PMI (Poste de Manoeuvre Informatise, computer interlocking) output,
For lighting different light colors；The coil of filament state relay is connected in lamp circuit, and contact provides filament to PMI
State input, PMI can judge the light color of actual displayed by different filament combinations of states.
Step S2 specifies the failure mode of typical device.Standard EN50129 (railway applications: communication, signal and processing system
System --- safety-related signal electron system) in give the failure mode list of common component, by taking relay as an example,
Failure mode includes coil interruption, contact adhesion, working value increase/reduction etc., is detailed in the following table 1.
Step S3 establishes FMECA database.It is every corresponding to each component analyzed as a result, in circuit for storing
A kind of failure mode all sequentially lists, and subsystem corresponding to every kind of failure mode, system-level influence and safety analysis etc. also will
It embodies in the database.According to failure mode specified in component type and standard in circuit, established in EXCEL
FMECA database, each column are defined as follows table 2:
Step 2 is influenced with PSpice software emulation failure.It specifically includes:
Step S4 obtains the characterisitic parameter of typical device.Before establishing simulation model, the characteristic ginseng of first acquisition device is needed
Number.JWXC-1700 type nonpolarized relay for use as lighting relay and the JZXC-H18 type as filament state relay are whole
For flowing slow release relay, working value, release value, coil resistance can be obtained according to the technical specification of two kinds of relays and delayed
Put the characterisitic parameters such as time.
Step S5 establishes typical device simulation model in PSpice software.PSpice is a powerful circuit
Simulation software provides component library abundant and selects to use for user, but for relay, the included version of software is seldom,
Therefore it needs voluntarily to build device model according to the concrete model of relay when carrying out relay circuit emulation, it is common to model
Method has following two:
Sentence method, the device model in PSpice are finally all stored and are called by distinctive sentence, therefore can be straight
It connects and writes relay model using PSpice sentence.
Equivalent circuit method obtains the equivalent circuit of relay by the structure and working principle of split-phase relay, utilizes
Base components abundant in PSpice, build equivalent circuit and carry out analogue relay.
In both the above method, the language syntax requirements complete outlines device characteristic of PSpice language needs to have PSpice
More deep understanding, and equivalent circuit method is more intuitive, enforcement difficulty is smaller.With JWXC-1700 relay and JZXC-H18
For relay, using the basic relay model provided in PSpice, built in conjunction with both the above relay feature equivalent
Circuit.If JWXC-1700 is voltage-type relay, voltage-controlled current source need to be added to realize voltage control, and JZXC-H18 is whole
Rectifier bridge need to be added on the basis of master mould, and need according to the characterisitic parameter of two kinds of relays to equivalent for current relay
Circuit is adjusted.
Step S6, builds artificial circuit in PSpice software, and operation emulation obtains the first simulation result.Such as: according to
Circuit design in attached drawing 2, builds artificial circuit in PSpice, such as attached drawing 3.Wherein lighting unit and colored lights category external electrical
Road, therefore replaced with resistance.After the completion of circuit is built, simulation parameter, operation emulation are set, simulation successively issues the point of each light color
Lamp order records the current waveform of each colored lights, sees attached drawing 4.0s-1s defaults point red light without order in figure, and 1s-5s issues point blue lamp
Command point brilliant blue lamp, 5s-10s issue point green light command point and give a green light, and 10s-15s issues the greenish-yellow lamp order of point and puts brilliant green simultaneously
Lamp, amber light, 15s-16s default point red light without order, and 16s-20s issues point blue lamp command point brilliant blue lamp.
Step S7 successively establishes each device, each failure mould for needing to analyze according to aforementioned specific failure mode
Defective device model corresponding to formula.
Step S8 successively replaces normal device with defective device model in the artificial circuit built, and it is imitative to obtain second
Very as a result, to needing each device analyzed, each failure mode to repeat the step.
Step S9 makes comparisons to the second simulation result with the first simulation result, obtains the impact analysis of equipment/subsystem irrespective of size
As a result, filling FMECA database.
Example 1: by taking blue lamp lighting relay ADJ as an example, adjustment relay parameter, simulated failure state " working value increase ",
Keep consistent in lighting command timing and step S6, operation emulation records the current waveform of each colored lights, sees attached drawing 5.Compare attached drawing
4, it is seen that after 1s and 16s issues point blue lamp order, blue lamp lighting relay is not acted, and semaphore still sends out a warning.By this
As a result device ADJ in FMECA database, " equipment/subsystem irrespective of size shadow corresponding to failure mode " working value increase " are inserted
Ring " in.
Example 2: by taking green light lighting relay LJ as an example, adjustment relay parameter, simulated failure state " release time extension ",
Keep consistent in lighting command timing and step f, operation emulation records the current waveform of each colored lights, sees attached drawing 6.Compare attached drawing
4, it is seen that after 10s issues the greenish-yellow lamp order of point, since green light lighting relay release time extends, semaphore continues brilliant green
Lamp, until 12s or so green light lighting relay discharges, semaphore just switches to greenish-yellow lamp.This result is inserted into FMECA database
In " influence of equipment/subsystem irrespective of size " corresponding to middle device LJ, failure mode " release time extension ".
Step 3 improves FMECA database.It specifically includes:
Step S10 obtains system according to the impact analysis of equipment/subsystem irrespective of size as a result, in conjunction with subsystem, system function
The impact analysis of grade is as a result, filling FMECA database.
In above-mentioned steps S9, actual signal machine shows red light when command point blue lamp in example 1, since red light is disable signal,
The failure may cause vehicle and stop in emergency.
In above-mentioned steps S9, actual displayed green light when command point greenish-yellow lamp in example 2, green light indicates front only under backup mode
It is two section free time, greenish-yellow lamp indicates that only one section of front is idle, which, which makes vehicle or driver be mistakenly considered front, has
Two section free time may cause the accidents such as collision.
Step S11, according to system-level impact analysis as a result, the form of expression of analysis failure, inserts FMECA database.
In above-mentioned steps S9, the failure in 2 examples can be inputted by the state of filament back production relay to be judged.
For example 1, malfunction coefficient is downgraded to red light, is secure side, therefore dangerous influence is not present.For example 2, malfunction coefficient upgrades to
Green light is hazardous side, and there are dangerous influences, need to take mitigation strategy, need to first remove when being switched to greenish-yellow lamp such as green light all
Lighting order, point send out a warning, and only filament state back production display red light can apply after correctly lighting lights greenish-yellow lamp order.
Above embodiments are used for illustrative purposes only, rather than limitation of the present invention, the technology people in relation to technical field
Member, without departing from the spirit and scope of the present invention, can also make various transformation or modification, therefore all equivalent
Technical solution also should belong to scope of the invention, should be limited by each claim.
Claims (1)
1. a kind of CBTC system trackside relay rack FMECA method characterized by comprising
The structure of circuit in trackside relay rack, the failure mode of device are specified, and establishes FMECA database；
It is influenced with PSpice software emulation failure；
Improve FMECA database；
Described influences with PSpice software emulation failure, comprising:
The characterisitic parameter of acquisition device；
Device simulation model is established in PSpice software；
Artificial circuit is built in PSpice software, operation emulation obtains the first simulation result；
According to specific failure mode, successively establish and need each device analyzed, failure corresponding to each failure mode
Device model；
In the artificial circuit built, normal device successively is replaced with each defective device model, obtains the second emulation knot
Fruit；
It makes comparisons to the second simulation result with the first simulation result, obtains the impact analysis of equipment/subsystem irrespective of size as a result, filling
FMECA database；
Described improves FMECA database, comprising:
According to the impact analysis of equipment/subsystem irrespective of size as a result, obtaining system-level impact analysis as a result, filling FMECA database；
According to system-level impact analysis as a result, the form of expression of analysis failure, inserts FMECA database.
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| CN201610942047.9A CN106546914B (en) | 2016-11-01 | 2016-11-01 | A kind of CBTC system trackside relay rack FMECA method |
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| CN201610942047.9A CN106546914B (en) | 2016-11-01 | 2016-11-01 | A kind of CBTC system trackside relay rack FMECA method |
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| CN106546914A CN106546914A (en) | 2017-03-29 |
| CN106546914B true CN106546914B (en) | 2019-01-29 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102393864A (en) * | 2011-06-28 | 2012-03-28 | 电子科技大学 | Method for optimizing reliability of harmonic gear used for space vehicle based on fault physics |
| CN103760886A (en) * | 2013-12-02 | 2014-04-30 | 北京航空航天大学 | Newly-developed aviation electronic product hardware comprehensive FMECA method |
| CN104504248A (en) * | 2014-12-05 | 2015-04-08 | 中国航空工业集团公司第六三一研究所 | Failure diagnosis modeling method based on designing data analysis |
| CN105844435A (en) * | 2016-06-15 | 2016-08-10 | 南京中车浦镇城轨车辆有限责任公司 | Subway vehicle fault information management system based on FMECA |
-
2016
- 2016-11-01 CN CN201610942047.9A patent/CN106546914B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102393864A (en) * | 2011-06-28 | 2012-03-28 | 电子科技大学 | Method for optimizing reliability of harmonic gear used for space vehicle based on fault physics |
| CN103760886A (en) * | 2013-12-02 | 2014-04-30 | 北京航空航天大学 | Newly-developed aviation electronic product hardware comprehensive FMECA method |
| CN104504248A (en) * | 2014-12-05 | 2015-04-08 | 中国航空工业集团公司第六三一研究所 | Failure diagnosis modeling method based on designing data analysis |
| CN105844435A (en) * | 2016-06-15 | 2016-08-10 | 南京中车浦镇城轨车辆有限责任公司 | Subway vehicle fault information management system based on FMECA |
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Address after: 201206 Shanghai City, Pudong New Area Jinhai Road No. 1000 Building No. 28 Applicant after: Shanghai electric traffic automation system Co., Ltd. Address before: 201206 Shanghai City, Pudong New Area Jinhai Road No. 1000 Building No. 28 Applicant before: Shanghai is from instrument Tai Leizi traffic automation System Co., Ltd |
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