CN109581255A - A kind of error protection system and method for test macro - Google Patents
A kind of error protection system and method for test macro Download PDFInfo
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- CN109581255A CN109581255A CN201710908973.9A CN201710908973A CN109581255A CN 109581255 A CN109581255 A CN 109581255A CN 201710908973 A CN201710908973 A CN 201710908973A CN 109581255 A CN109581255 A CN 109581255A
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- test
- resistance
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- error protection
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
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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
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/58—Testing of lines, cables or conductors
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- General Physics & Mathematics (AREA)
- Tests Of Electronic Circuits (AREA)
Abstract
The present invention relates to a kind of error protection systems of test macro, are made of industrial control computer [1], resistance test module [2], online resistance [3], test adaptor cable [4], resistance test software [5] and measured piece shorting stub [6].Further relate to a kind of error protection method of test macro.System and method of the invention is easy to accomplish, and may insure the correct selection of cable and software, the generation of mistake in test process is effectively reduced, the damage of test equipment and test product is avoided, the present invention is at low cost, can be applied in most of Auto-Test Systems.
Description
Technical field
The invention belongs to test field of measuring technique, it is related to the test software in a kind of universal Auto-Test System, surveys
Try the matching detection method of cable and test product.
Background technique
Carrying out test equipment General design and in use, while different measured pieces in test process, often
There is test product and the mutually unmatched situation of test cable, test equipment, test software.If test cable interface is identical,
But when core wire defines different, tester is easy to select wrong test cable；When test cable is connect correctly with measured piece, may go out
The case where now starting the mating test software of other products.For such security risk, existing test equipment error protection measure master
It will there are several types of modes:
1) artificial judgment is relied on, there are larger security risk, human factors to be affected for which, cannot function as error protection
Major measure.When in the Auto-Test System with general utility functions there are when shape and the identical test cable of size, merely
By on cable mark and mark can not complete to avoid user's wrong cable, or start unmatched test when test
Situations such as software, occurs, if cannot find mistake in time when test, it is possible to serious consequence is brought, so that test be caused to set
The standby mutual damage with product, or even injure personal safety.
2) hardware identification mode: being arranged one to two kind of product type in specific test cable connector and identify core wire,
And access special circuit and signal designation, but this method can recognize product type type, limited amount, when connector connection less than
When position, possibly product type can not be identified, reliability is low.
3) software identifies: in such a way that test software identifies test adaptor cable, which departing from test product, when
Also incorrect link is be easy to cause when test interface is identical.
With the development of test equipment General design technology and popularizing for application, it is general that error-preventive design has become measurement
One important indicator of type test equipment performance.Traditional recognition methods mainly uses the modes such as manual identified, hardware identification.
To avoid the problem that this human operational error, it is necessary to design a kind of safer and more reliable error protection method.
Summary of the invention
The purpose of the present invention is: the present invention is set for drawback present in existing test equipment General design scheme
Meter improves, and provides a kind of error protection system and method, by present cable identification technology upgrade to test software, test cable and
The synchronous identification of test product improves universal test equipment the purpose is to improve the type identified by product type, quantity
Testing reliability, safety and testing efficiency.
In view of the above problem of the prior art, according to one aspect of the present disclosure, the present invention uses following technology
Scheme:
A kind of error protection system of test macro, by industrial control computer [1], resistance test module [2], online resistance
[3], test adaptor cable [4], resistance test software [5] and measured piece shorting stub [6] composition；
Wherein, industrial control computer [1] is for running resistance test software [5] and installation fixed resistance test module
[2]；Resistance test module [2] is used to measure the resistance value of the online resistance [3] pre-installed on test adaptor cable [4], and by electricity
It hinders test software [5] and passes through computer communication bus and resistance test module [2] real-time communication, the resistance of the online resistance that reads back [3]
Value, then judgement processing is carried out by resistance test software [5], when test macro works, by test adaptor cable [4] and resistance test
Module [2] connection, and resistance measurement circuit is formed with measured piece shorting stub [6].
It is characterized in that, industrial control computer [1] is integrated with RS232 or RS422 or usb communication bus, realize and electricity
Hinder the program-controlled and reading data of test module [2].
It is characterized in that, resistance test module [2], communication interface is RS232 or RS422 or USB, and precision is not less than
0.5%, range 0~3K Ω, test electric current are not more than 10mA.
It is characterized in that, online resistance [3], chooses low power metal film resistance, precision is not less than 1%, and resistance value is less than 5K
Ω。
A kind of error protection method of test macro, comprising the following steps:
1) after test macro self-test passes through, tester is accomplished manually cable model pair by model and cable comparing table
The resistance parameter setting answered；
2) industrial control computer [1] operation resistance test software [5], passes through industrial control computer [1] bus marco
Resistance test module [2] carries out the resistance measurement of test adaptor cable [4], online resistance [3] and measured piece shorting stub [6] formation
The measurement of online resistance [3] resistance value on circuit；
3) resistance test software [5] reads the measurement result of online resistance [3] resistance value, and identifies resistance number with cable model
It is compareed according to library, judging the model of test adaptor cable [4], whether type selecting is correct, if incorrect, system prompt cable type selecting mistake,
It is required that the correct test adaptor cable of replacement, and start-up resistor measurement and cable judgement again, until the test cable of connection
With correct；If correct, resistance test software [5] is chosen and starts corresponding test program, and starts the official testing of product.
The utility model has the advantages that
The present invention combines the development of modern test equipment to become according to the engineering experience of automatic test equipment General design
Gesture proposes the error protection system and method for a kind of synthesization, and has successfully used the universal test equipment of more sets, shows
The generation that mistake in test process can be effectively reduced using the error-preventive design method of multi-form synthesization improves the reliable of system
Property, safety and working efficiency.Beneficial effects of the present invention are as follows:
1) easy to accomplish, it is only necessary to by the vacant needle stitch using test cable plug, to install cable additional at cable connector
Identify resistance；
2) the correct selection that may insure cable and software, effectively reduces the generation of mistake in test process, avoids testing
The damage of equipment and test product.
3) present invention is at low cost, can be applied in most of Auto-Test Systems.
Detailed description of the invention
Fig. 1 connection schematic diagram of the present invention；
Fig. 2 error protection method workflow.
Specific embodiment
The present invention is described in further detail below with reference to embodiment, embodiments of the present invention are not limited thereto.
As shown in Figure 1, the error protection system of test macro of the invention, by industrial control computer [1], resistance test mould
Block [2], online resistance [3], test adaptor cable [4], resistance test software [5] and measured piece shorting stub [6] composition.
Component 1: industrial control computer is mainly used for installing fixed resistance test module [2], and it is soft to run resistance test
Part [5], it is desirable that be integrated at least one communication bus (such as RS232 or RS422 or USB), realize and resistance test module [2]
Program-controlled and reading data；
Component 2: resistance test module is mainly used for measuring cable online resistance [3], and is sent the data to by bus
Resistance test software, it is desirable that there is four-wire ohm test function, communication interface is RS232 or RS422 or USB, and precision is not less than
0.5%, range 0~3K Ω, test electric current are not more than 10mA；
Component 3: test cable online resistance, for distinguishing the test cable of different model, for cable on-line machining side
Just, a type cable is represented using a resistance, and preferentially chooses economy that market is easily purchased, conventional, the small-power of small size gold
Belong to film resistance, precision is not less than 1%, and resistance value is less than 5K Ω；
Component 4: test adaptor cable chooses extra stitch in test adaptor cable, and accesses positive and negative two conducting wires, with
Shorting stub forms the measurement circuit of cable identification resistance in test product.
Component 5: resistance test software is integrated in industrial control computer [1], for measuring online resistance, and is carried out
Cable model identification judgement；
Component 6: measured piece shorting stub is integrated in inside a certain socket of measured piece, chooses the inside shorting stub of measured piece, such as
Two empty feet that fruit does not need then occupancy measured piece socket extra are processed, to form the test loop of online resistance.
Specific implementation step is as follows:
1) system group cheek as shown in Figure 1 carries out type selecting, 2)~4 type selecting is shown in) it is described, and choose VC++ software and open
Send out platform；
2) industrial control computer [1] type selecting is to grind magnificent 610 types, has been internally integrated usb bus interface, can have been connected by USB
Connect the program-controlled and reading data of realization Yu resistance test module；
3) resistance test module [2] chooses FLUKE company resistance test module, has four-wire ohm test function, communication
Interface is USB, and precision 0.2%, range 0~5K Ω, test electric current is less than 10mA；
4) test cable online resistance chooses a 150 Ω metalfilmresistors, power 0.25W, precision 1%；
5) carry out component connection as shown in Figure 1, and operated by method for testing resistance workflow: such as 2 institute of attached drawing
Show, after System self-test passes through, tester is by model and cable comparing table, and the parameters such as 150 Ω of input, start-up resistor is tested soft
Part controls resistance test module by computer bus and carries out online resistance resistance value measurement in test adaptor cable, then survey of reading back
Amount as a result, and compare with cable model identification resistance data library, if measured value is judges to test in ± 1% range of 150 Ω
Cable model type selecting is correct, and starts corresponding matched test program；If exceeding the range, system prompt cable type selecting mistake,
It is required that the correct test adaptor cable of replacement, and start-up resistor measurement and cable judgement again, until the test cable of connection
With correct.
Claims (5)
1. a kind of error protection system of test macro, by industrial control computer [1], resistance test module [2], online resistance
[3], test adaptor cable [4], resistance test software [5] and measured piece shorting stub [6] composition；
Wherein, industrial control computer [1] is for running resistance test software [5] and installation fixed resistance test module [2]；Electricity
Resistance test module [2] is used to measure the resistance value of the online resistance [3] pre-installed on test adaptor cable [4], and by resistance test
Software [5] is by computer communication bus and resistance test module [2] real-time communication, the resistance value of the online resistance that reads back [3], then by
Resistance test software [5] carries out judgement processing, when test macro works, by test adaptor cable [4] and resistance test module [2]
Connection, and resistance measurement circuit is formed with measured piece shorting stub [6].
2. a kind of error protection system of test macro as described in claim 1, which is characterized in that industrial control computer [1]
It is integrated with RS232 or RS422 or usb communication bus, realizes the program-controlled and reading data with resistance test module [2].
3. a kind of error protection system of test macro as described in claim 1, which is characterized in that resistance test module [2] is led to
Communication interface is RS232 or RS422 or USB, and precision is not less than 0.5%, range 0~3K Ω, and test electric current is not more than 10mA.
4. a kind of error protection system of test macro as described in claim 1, which is characterized in that online resistance [3] is chosen small
Power metal film resistance, precision are not less than 1%, and resistance value is less than 5K Ω.
5. a kind of use a kind of error protection for the test macro that the error protection system of test macro executes as described in claim 1
Method, comprising the following steps:
1) after test macro self-test passes through, it is corresponding to be accomplished manually cable model by model and cable comparing table by tester
Resistance parameter setting；
2) industrial control computer [1] operation resistance test software [5], passes through industrial control computer [1] bus marco resistance
Test module [2] carries out the resistance measurement circuit of test adaptor cable [4], online resistance [3] and measured piece shorting stub [6] formation
The measurement of upper online resistance [3] resistance value；
3) resistance test software [5] reads the measurement result of online resistance [3] resistance value, and identifies resistance data library with cable model
Control, judging the model of test adaptor cable [4], whether type selecting is correct, if incorrect, system prompt cable type selecting mistake, it is desirable that
Correct test adaptor cable is replaced, and start-up resistor measurement and cable judgement again, until the test cable matching of connection is just
Really；If correct, resistance test software [5] is chosen and starts corresponding test program, and starts the official testing of product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710908973.9A CN109581255A (en) | 2017-09-29 | 2017-09-29 | A kind of error protection system and method for test macro |
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|---|---|---|---|
| CN201710908973.9A CN109581255A (en) | 2017-09-29 | 2017-09-29 | A kind of error protection system and method for test macro |
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| CN109581255A true CN109581255A (en) | 2019-04-05 |
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| CN201710908973.9A Pending CN109581255A (en) | 2017-09-29 | 2017-09-29 | A kind of error protection system and method for test macro |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20230384397A1 (en) * | 2022-05-24 | 2023-11-30 | GM Global Technology Operations LLC | Testers, testing systems and methods of testing electrical components |
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| US11885854B2 (en) * | 2022-05-24 | 2024-01-30 | GM Global Technology Operations LLC | Testers, testing systems and methods of testing electrical components |
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Application publication date: 20190405 |