CN109143049A - A kind of electromagnetic relay lifetime estimation method based on electrical combined detection technique - Google Patents
A kind of electromagnetic relay lifetime estimation method based on electrical combined detection technique Download PDFInfo
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- CN109143049A CN109143049A CN201810849332.5A CN201810849332A CN109143049A CN 109143049 A CN109143049 A CN 109143049A CN 201810849332 A CN201810849332 A CN 201810849332A CN 109143049 A CN109143049 A CN 109143049A
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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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- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The present invention relates to a kind of electromagnetic relay lifetime estimation methods based on electrical combined detection technique, measured relay theory action frequency and offer actuating of relay pumping signal are obtained including building control relay circuit, it builds contact detection circuitry and obtains the effectively closed number of relay, build vibration detection optical path, microvibration variation when being acted using fiber Bragg grating strain sensor control relay judges relay actual act number, and comprehensive each parameter completes life appraisal to relay and aging effects factor speculates.The present invention solves single contact resistance parameter and judges drawback present in the method for relay failure, the action situation of relay and the effectively closed situation of contact are carried out while being monitored by vibration detecting system and contact detection circuitry, while accurate evaluation relay life, it can determine whether the Failure Factors for influencing relay life.
Description
Technical field
The present invention relates to relay test field, specifically a kind of electromagnetism relay based on electrical combined detection technique
Device lifetime estimation method.
Background technique
Electromagnetic relay is the important component of military secret electronic product, and the quality of relay performance directly affects military secret
The quality of electronic product.Nowadays, with to electromagnetic relay on machine stability and reliability requirement it is higher and higher, people start
It attempts to carry out electromagnetic relay on machine life appraisal, life appraisal result can play military secret overhaul very important guidance meaning
Justice.
Presently the most common electromagnetic relay lifetime estimation method is based on relay contact resistance detection come to its property
Can situation judged that but such method can not the non-contact such as some coil faults, mechanical breakdown to electromagnetic relay
Failure is detected and is assessed, and there are many deficiencies.
Chinese utility model patent " a kind of detection circuit for detecting relay malfunction and the relay with this circuit ",
Publication No. CN206876825U, publication date 20180112 disclose a kind of relay test circuit, pass through detection contact pressure
Drop with coil signal judges whether relay fails, but contact voltage drop signal and the threshold value of coil signal for different relays and
It says different, be easy to cause detection to judge by accident, and be not directed to the appraisal procedure of relay life.
Summary of the invention
Technical problem to be solved by the present invention lies in propose a kind of electromagnetism relay based on electrical combined detection technique
The drawbacks of device lifetime estimation method solves and judges inaccuracy in existing method, is not related to life appraisal.
The technical problems to be solved by the invention are realized using following technical scheme:
A kind of electromagnetic relay lifetime estimation method based on electrical combined detection technique, comprising steps of
A) control relay circuit is built；
B) contact detection circuitry is built；
C) vibration detection optical path is built；
D) life appraisal and aging effects factor speculate.
The voltage rating for generating relay coil in the step a) using D/A board and driving circuit, can control relay
Device carries out repetitive operation with certain frequency and duty ratio.
Pass through data collecting plate card in the step b) with certain frequency acquisition to the touching in relay contact attracting process
Point voltage, electric current and contact resistance are acquired, and collected data are sent to industrial personal computer and are analyzed and processed.
The step c) includes:
C1 it) selects fiber Bragg grating strain sensor: reflection wavelength being written in single mode optical fiber in the Bradley of 1.55um window
Lattice grating, the strain sensitivity of fiber bragg grating is 1pm/ μ ε under the window；
C2 it) laying optical fiber grating strain transducer: after choosing suitable fiber-optic grating sensor, will be passed with fiber grating
Optical fiber one end of sensor is fastened on the fixing end other end and is fixed at the top of relay, and the lower end of relay is fixed；
C3 it) builds optical fiber grating regulating system: fiber Bragg grating strain sensor is utilized into transmission fiber and fiber grating solution
Instrument is adjusted to be connected, fiber Bragg grating (FBG) demodulator can emit light wave and can demodulate to the reflection wavelength of fiber-optic grating sensor, pass through
Fiber Bragg grating (FBG) demodulator is connected by network interface with industrial personal computer, the wavelength signals exported using the inspection software on industrial personal computer to (FBG) demodulator
It is handled, real-time display and the relay vibration information that fiber Bragg grating strain sensor detects can be saved, it is dynamic to relay
It is monitored.
Include: in the step d)
D1 relay theory action frequency) is obtained by control relay circuit；
D2 the effectively closed number of relay contact) is obtained by contact detection circuitry；
D3 the actual act number of relay) is obtained by vibration detection optical path；
D4) pass through step d1), d2), d3) in aggregation of data analyze to obtain the actual life of relay and influence the service life
Factor.
The step d4) in include judgement influence the service life factor method:
If vibration detecting system detect vibration and contact detection circuitry to be not detected contact effectively closed, can determine whether
The relay is to cause to fail due to bigger than normal including contact elastic slice mechanical damage, contact surface contact resistance；
If vibration detecting system is not detected vibration and generates, relay is not operating, then can determine whether that changing relay is due to packet
The reason of including coil breakage, armature mechanical damage causes to fail.
The beneficial effects of the invention are as follows can pass through vibration detecting system and contact detection circuitry to the action situation of relay
It carries out while monitoring with the effectively closed situation of contact, while accurate evaluation relay life, can determine whether to influence relay
The Failure Factors in service life.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is the electrical combined detection system structure chart of relay of the invention；
Fig. 2 is fiber Bragg grating strain sensor layout diagram of the invention；
Fig. 3 is test method flow chart of the invention.
Specific embodiment
In order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, below it is right
The present invention is further described.
The electrical combined detection system structure chart of relay as shown in Figure 1:
Including for handling and acquiring data, the industry control machine host of operation detection program, the industry control machine host is connected with
Data collecting card is used to acquire the contact resistance of relay to be measured, and the industry control machine host is connected with control relay circuit and is used for
There is provided pumping signal, to relay to be measured repeatedly clearance and record on-off excitation number, the industry control machine host by network interface company
It is connected to fiber Bragg grating (FBG) demodulator, the fiber Bragg grating (FBG) demodulator is connected with fiber Bragg grating strain sensor, and the fiber grating is answered
Become sensor and be laid in relay top to be measured for detecting vibration variation small when the actuating of relay, passes through the industrial personal computer
Simultaneously meter relay actual act number, the industry control machine host are connected with display and keyboard and mouse for host judgement, convenient
Operate host computer and display test parameter.
According to said detecting system, it is equipped with a kind of electromagnetic relay life appraisal side based on electrical combined detection technique
Method, test method flow chart as shown in Figure 3, comprising steps of
A) control relay circuit is built；
B) contact detection circuitry is built；
C) vibration detection optical path is built；
D) life appraisal and aging effects factor speculate.
The voltage rating for generating relay coil in the step a) using D/A board and driving circuit, can control relay
Device carries out repetitive operation with certain frequency and duty ratio.
Pass through data collecting plate card in the step b) with certain frequency acquisition to the touching in relay contact attracting process
Point voltage, electric current and contact resistance are acquired, and collected data are sent to industrial personal computer and are analyzed and processed.
The step c) includes:
C1 it) selects fiber Bragg grating strain sensor: reflection wavelength being written in single mode optical fiber in the Bradley of 1.55um window
Lattice grating, the strain sensitivity of fiber bragg grating is 1pm/ μ ε under the window；
Fiber Bragg grating strain sensor layout diagram as shown in Figure 2:
C2 it) laying optical fiber grating strain transducer: after choosing suitable fiber-optic grating sensor, will be passed with fiber grating
Optical fiber one end of sensor is fastened on fixing end, and the other end is fixed at the top of relay, and the lower end of relay is fixed, and works as relay
Tensile stress can be generated to fiber Bragg grating strain sensor when device movement vibration, fiber Bragg grating strain sensor can detect this at this time
Stress, so that the vibration each time to relay is monitored；
C3 it) builds optical fiber grating regulating system: fiber Bragg grating strain sensor is utilized into transmission fiber and fiber grating solution
Instrument is adjusted to be connected, fiber Bragg grating (FBG) demodulator can emit light wave and can demodulate to the reflection wavelength of fiber-optic grating sensor, pass through
Fiber Bragg grating (FBG) demodulator is connected by network interface with industrial personal computer, the wavelength signals exported using the inspection software on industrial personal computer to (FBG) demodulator
It is handled, real-time display and the relay vibration information that fiber Bragg grating strain sensor detects can be saved, it is dynamic to relay
It is monitored.
Include: in the step d)
D1 relay theory action frequency) is obtained by control relay circuit；
D2 the effectively closed number of relay contact) is obtained by contact detection circuitry；
D3 the actual act number of relay) is obtained by vibration detection optical path；
D4) pass through step d1), d2), d3) in aggregation of data analyze to obtain the actual life of relay and influence the service life
Factor.
The step d4) in include judgement influence the service life factor method:
If vibration detecting system detect vibration and contact detection circuitry to be not detected contact effectively closed, can determine whether
The relay is to cause to fail due to bigger than normal including contact elastic slice mechanical damage, contact surface contact resistance；
If vibration detecting system is not detected vibration and generates, relay is not operating, then can determine whether that changing relay is due to packet
The reason of including coil breakage, armature mechanical damage causes to fail.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and what is described in the above embodiment and the description is only the present invention
Principle, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these variation and
Improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by appended claims and its equivalent
Object defines.
Claims (7)
1. a kind of electromagnetic relay lifetime estimation method based on electrical combined detection technique, which is characterized in that comprising steps of
A) control relay circuit is built；
B) contact detection circuitry is built；
C) vibration detection optical path is built；
D) life appraisal and aging effects factor speculate.
2. a kind of electromagnetic relay lifetime estimation method based on electrical combined detection technique according to claim 1,
It is characterized in that: generating the voltage rating of relay coil in the step a) using D/A board and driving circuit, can control relay
Device carries out repetitive operation with certain frequency and duty ratio.
3. a kind of electromagnetic relay lifetime estimation method based on electrical combined detection technique according to claim 1,
It is characterized in that: passing through data collecting plate card in the step b) with certain frequency acquisition to the touching in relay contact attracting process
Point voltage, electric current and contact resistance are acquired, and collected data are sent to industrial personal computer and are analyzed and processed.
4. a kind of electromagnetic relay lifetime estimation method based on electrical combined detection technique according to claim 1,
Be characterized in that: the step c) includes:
C1 it) selects fiber Bragg grating strain sensor: reflection wavelength being written in single mode optical fiber in Prague light of 1.55um window
Grid, the strain sensitivity of fiber bragg grating is 1pm/ μ ε under the window；
C2) laying optical fiber grating strain transducer:, will be with fiber-optic grating sensor after choosing suitable fiber-optic grating sensor
Optical fiber one end be fastened on the fixing end other end and be fixed at the top of relay, and the lower end of relay is fixed；
C3 it) builds optical fiber grating regulating system: fiber Bragg grating strain sensor is utilized into transmission fiber and fiber Bragg grating (FBG) demodulator
It is connected, fiber Bragg grating (FBG) demodulator is connected with industrial personal computer by network interface, (FBG) demodulator is exported using the inspection software on industrial personal computer
Wavelength signals handled, real-time display and the relay vibration information that fiber Bragg grating strain sensor detects can be saved.
5. a kind of electromagnetic relay lifetime estimation method based on electrical combined detection technique according to claim 1,
It is characterized in that: including: in the step d)
D1 relay theory action frequency) is obtained by control relay circuit；
D2 the effectively closed number of relay contact) is obtained by contact detection circuitry；
D3 the actual act number of relay) is obtained by vibration detection optical path；
D4) pass through step d1), d2), d3) in aggregation of data analyze to obtain the actual life of relay and influence the service life because
Element.
6. a kind of electromagnetic relay lifetime estimation method based on electrical combined detection technique according to claim 5,
Be characterized in that: the step d4) in include judgement influence the service life factor method: if vibration detecting system detects vibration
And to be not detected contact effectively closed for contact detection circuitry, then can determine whether that the relay is due to including that elastic slice machinery in contact damages
Wound, contact surface contact resistance reason bigger than normal cause to fail.
7. a kind of electromagnetic relay lifetime estimation method based on electrical combined detection technique according to claim 5,
Be characterized in that: the step d4) in include judgement influence the service life factor method: if vibration is not detected in vibration detecting system
It generates, relay is not operating, then can determine whether that changing relay is to cause to lose due to including coil breakage, armature mechanical damage
Effect.
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| CN201810849332.5A CN109143049A (en) | 2018-07-28 | 2018-07-28 | A kind of electromagnetic relay lifetime estimation method based on electrical combined detection technique |
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| CN201810849332.5A CN109143049A (en) | 2018-07-28 | 2018-07-28 | A kind of electromagnetic relay lifetime estimation method based on electrical combined detection technique |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110763989A (en) * | 2019-10-29 | 2020-02-07 | 杭州中车车辆有限公司 | Method for predicting service life of relay of urban rail transit vehicle |
| CN111597754A (en) * | 2020-04-16 | 2020-08-28 | 广东省智能制造研究所 | Fault prediction method and device for shielded gate, terminal equipment and storage medium |
| CN112782570A (en) * | 2019-11-06 | 2021-05-11 | 株洲中车时代电气股份有限公司 | System and method for monitoring relay |
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| CN112782570A (en) * | 2019-11-06 | 2021-05-11 | 株洲中车时代电气股份有限公司 | System and method for monitoring relay |
| CN111597754A (en) * | 2020-04-16 | 2020-08-28 | 广东省智能制造研究所 | Fault prediction method and device for shielded gate, terminal equipment and storage medium |
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