CN103376380B - A kind of test system and method - Google Patents

A kind of test system and method Download PDF

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Publication number
CN103376380B
CN103376380B CN201310278210.2A CN201310278210A CN103376380B CN 103376380 B CN103376380 B CN 103376380B CN 201310278210 A CN201310278210 A CN 201310278210A CN 103376380 B CN103376380 B CN 103376380B
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test
module
oscillograph
main frame
information
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CN103376380A (en
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张迎华
李华
陈佳
程鹏飞
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Dawning Information Industry Beijing Co Ltd
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Dawning Information Industry Beijing Co Ltd
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Abstract

The invention provides a kind of test system, including platform to be measured, keyset, oscillograph and test PC main frame, platform the most to be measured is connected with keyset by USB interface, keyset is connected with oscillograph by multichannel probe, oscillograph is connected with test main frame by controlling interface, present invention also offers a kind of method of testing.Use the technical scheme that the present invention provides, it is achieved that the automatization of test process, not only save the input of test manpower, and have test content can arrange flexibly, can be according to different test requests with the testing time selects flexibly, result reliability more advantages of higher.

Description

A kind of test system and method
Technical field
The present invention relates to technical field of measurement and test, particularly relate to a kind of signal test system and method.
Background technology
Video Graphics Array (VGA, Video Graphics Array) is that IBM proposed in 1987 The computer display standard of individual use analogue signal.In hardware testing, signal testing is a part for particular importance, Directly ensureing function and the behavior pattern of board, VGA signal is the most the most frequently used display interface device signal, Technical comparing is ripe, and market Application comparison is wide, mainboard etc. is contained to the board of display function, and VGA believes Number test be the item of must surveying in hardware testing, confirm design signal meet signal standards specification, it is possible to Various display are compatible.The test of VGA signal, according to its signal standards specification, test content mainly collects In at the level of VGA signal, noise, slope, cross the aspects such as punching, main use oscillograph to test.
Test automation is target and the trend of current software and hardware test, will repeat the concrete work of uninteresting test Make, use software and hardware mode equipment and Automatic Program to carry out.At present for the test of VGA signal quality, It is mainly used in the test of laboratory development, needs to rely on tester manually gather signal and it is carried out Measure, thus determine whether to meet standard-required.
Existing this method of testing has the disadvantage in that
1. rely on tester to test signal parameters one by one, manually carry out signal capture and measurement, efficiency Ratio is relatively low, and the testing time is long;
2. signal acquisition in test, only it is observed that certain situation, the parameter number recorded according to this situation According to, can only explain the RST this time captured, it is impossible to guarantee the worst condition of signal, test result Limited reliability.
Summary of the invention
For the shortcoming of existing method of testing, the invention provides a kind of test system, technical scheme is as follows:
A kind of test system, including: platform to be measured, keyset, oscillograph and test PC main frame, wherein Platform to be measured is connected with keyset by USB interface, and keyset is connected with oscillograph by multichannel probe, Oscillograph is connected with test PC main frame by controlling interface, and described platform to be measured includes one or more tested Board.
Preferably, described test PC main frame includes oscillograph control module, testing and control interface module and survey Test result determination module.
Preferably, described testing and control interface module includes test event module, data processing module and interface Display module;
Described test event module for carrying out classification of the items to select some projects to survey by test content Examination;
Described data processing module is used for collecting test result data record, generates the test report of multi-form Accuse;
Described interface display module is used for showing test operation information or described test report.
Preferably, described test system also includes that testing standard module, described test result determination module are used for Test result is compared with the testing standard in described testing standard module, show that test result judges.
Present invention also offers and a kind of utilize above-mentioned test system to carry out the method tested, including:
By described test PC main frame input test information, described test information include Board Under Test card information and Test event information;
Test process is divided into multiple test submodule according to described test information by oscillograph, by running institute State each test submodule and carry out test video graphic array VGA signal;
Test result is shown by described test main frame after having tested.
Preferably, after described test is shown test result by described test PC main frame after completing, also include: Described test result is compared by described test PC main frame with standard testing result, show that test result is sentenced Fixed, and generate test report.
Other features and advantages of the present invention will illustrate in the following description, and, partly from explanation Book becomes apparent, or understands by implementing the present invention.The purpose of the present invention and other advantages can Realize by structure specifically noted in the description write, claims and accompanying drawing and obtain ?.
Accompanying drawing explanation
Fig. 1 is the schematic block diagram of the present invention;
Fig. 2 is the module diagram of the present invention.
Detailed description of the invention
Below in conjunction with Figure of description, the preferred embodiments of the present invention are illustrated, it will be appreciated that this place The preferred embodiment described is merely to illustrate and explains the present invention, is not intended to limit the present invention, and not In the case of conflict, the feature in embodiments of the invention and embodiment can be mutually combined.
Technical scheme mainly includes four parts, as it is shown in figure 1, include a hardware testing work Dress plate (also referred to as keyset), oscillograph, platform to be measured and test PC(personal computer, Personal Computer) main frame, wherein, keyset one end is connected with platform to be measured by USB interface, the other end Being connected with oscillograph by multichannel probe, oscillograph is then connected with test PC main frame by control interface.
In VGA signal, needing the signal of test to have 5, respectively R(is red), G(green), B(is blue), H(row synchronizes), V(field synchronization).In order to meet the needs of automatic test, need to show Ripple device can be simultaneously connected with these signals.Accordingly, it would be desirable to a hardware testing working plate (also referred to as keyset), One end uses the VGA connector of standard, is connected with port to be measured;The other end draws R/G/B/H/V respectively Signal, is connected on oscillographic different passage by probe.For test accurately, holding wire on working plate Impedance and terminating resistor, need to require design in strict accordance with the standard criterion of signal.In test, channel oscilloscope When number is more than 5, all signals all can be connected;If channel oscilloscope is less than 5, Ke Yixian Connecing part signal, after software prompt has been tested, then manual switching connects other and does not surveys signal and test.
Oscillograph includes oscillograph control module 101, is that the main of test operation realizes part.Oscillography Device itself is provided with particular command type and the form of programming to its function setting, operational motion etc., and joins There is Communications Control Interface, such as the function etc. of GPIB, Labview.Use corresponding programmed environment, can be by In manual test, each test setting, test operation break the whole up into parts be decomposed into one by one operation step Suddenly, programming realization, software automation complete test process.
To all test operations, can write in modular fashion, can be by various test content and test Process, is decomposed into some basic operation and computing modules, it is achieved mode is flexible, and facilitates later function Extension, includes but not limited to:
1) for the submodule of different test parameters: such as test level submodule, test slope submodule Block, tested punching pin module etc., different for the mode of measurement, triggering mode, test target, it is respectively completed Little submodule realizes;
2) carrying out decomposition module for test operation, according to realizing division of teaching contents, such as oscillograph sets substantially Putting submodule, it is achieved passage is arranged, vertical range is arranged, and bandwidth is arranged, and tests curriculum offering, display side Formula is arranged;Oscilloscope data gathers submodule, it is achieved horizontal sample rate is arranged, and record length is arranged, and touches Originating party formula is arranged;Oscilloscope data process submodule, measuring point determines, measurement record, to multiple Measurement result carries out mathematical algorithm process, the preservation of measurement result, measures abnormal information record etc.;
3) for realizing this software compatibility oscillographic to different model, to different oscillographs, complete relevant The Program transformation of aspect is set etc., can be formed support distinct device, no according to the difference of different model equipment Biconditional operation, the different submodule storehouse arranged, and certain extending space can be reserved, form the journey that system is complete Sequence storehouse.
Test PC main frame includes test event module 102, data processing module 103 and interface display mould Block 104.Test PC main frame provides a convenient man-machine interface, it is provided that test essential information, test set The functions such as the selection of alternative, test event, test environment confirmation, testing process monitoring, test result generation.
1) test essential information writing function is provided: include but not limited to test board card information, testing time And personal information, test equipment and software version information etc.;
2) for the equipment of reality test, such as oscillograph model, it is provided that model selects, thus really Guarantor's program can normally control testing equipment;
3) selection of test event is provided, content will be tested, classify according to parameter type, Ke Yixuan Select all tests, it is also possible to test for some of which key content.Design is being tested comprehensively Time, it is adaptable to all test;Produced problem before is being carried out in validation test, it is adaptable to select part Project is tested, time-consuming;
4) according to selected test event, point out necessary hardware link information, such as need to connect which signal and arrive The information such as which passage, carry out the confirmation of test environment before test is carried out, and provide auxiliary letter for tester Breath etc.;
5), in test process, simultaneous display test operation information, when facilitating fault, discriminating test carries out degree And failure cause, monitoring test process is normally carried out, and points out test process, and detection connection state is also Eject information to confirm in good time;
6), after having tested, mesh collects test result data record item by item, can generate survey in different forms Examination report.On interface, optional simple displaying and details show, and generate standard testing report.Wherein survey Examination report template can be with self-defining.
The final step of test is to be carried out the judgement to test result, exact p-value by test judgement module 105 Whether pass through.Can judge in the way of use is different.1) basic test result data is with certain File format and content format preserve, and can derive, tester judge;2) test number Realize in the document set according to the machine can be automatically linked to, by document realizes the judgement mark set Quasi-judged result, and preserve display in a document, such as link is saved in macrodefined excel form, Automatically whether result of determination is passed through in the table;3) in software, the submodule of testing standard is write, in advance First define content format, software carry out the comparison of test result and testing standard, thus automatically derived often The test result of one judges, and is automatically filled in related content in test report template, automatically generates test Report.
Wherein, for software implementation method, different equipment control interfaces and programming language specifically can also be used Speech realizes, the invention is not limited in this regard.
1. oscilloscope apparatus combines Automated condtrol interface, can be by the mode of programming, it is achieved to oscillographic Control.The behaviour carried out is needed corresponding to the test parameter order of foundation conventionally test VGA signal, test parameter Make step, the preserving type of test result and digital independent demand, the volume that can provide according to oscillograph itself Journey interface, is done step-by-step test operation by coding, it is achieved the automatization of test, can save test The time and efforts of personnel.
2. use automatic test, oscillograph can be made to catch abundant waveform, parameters is carried out many Secondary measurement, by judging maximum therein, minima and average, can be with capturing on higher degree Difference situation, so that it is determined that signal is the most sufficiently stable, and disclosure satisfy that standard criterion requirement the most always.Phase The former manual testing's method of ratio, has greatly improved in reliability.
Test process automation of the present invention, saves the input of test manpower;Test curriculum offering is flexible, root Select flexibly according to different test requests and testing time;Test mass data, result reliability is higher, more holds Easily find small probability fault;Technical scheme can be used for batch testing, is not limited to the reality of development Testing room test, operating technology difficulty is little.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all at this Within bright spirit and principle, any modification, equivalent substitution and improvement etc. done, should be included in this Within the scope of bright protection.

Claims (6)

1. a test system, it is characterised in that including: platform to be measured, keyset, oscillograph and test PC main frame, platform the most to be measured is connected with keyset by USB interface, and the keyset other end is drawn respectively R, G, B, H and V signal are also connected with oscillograph by multichannel probe, wherein, work as channel oscilloscope When number is more than 5, all signals that described keyset is drawn all are connected with described oscillograph;Oscillograph leads to Crossing control interface to be connected with test PC main frame, described test PC main frame is surveyed for sending to described oscillograph Examination information, test process is divided into multiple test submodule, institute according to described test information by described oscillograph State platform to be measured and include one or more tested board.
Test system the most as claimed in claim 1, it is characterised in that described test PC main frame includes showing Ripple device control module, testing and control interface module and test result determination module.
Test system the most as claimed in claim 2, it is characterised in that described testing and control interface module bag Include test event module, data processing module and interface display module;
Described test event module for carrying out classification of the items to select some projects to survey by test content Examination;
Described data processing module is used for collecting test result data record, generates the test report of multi-form Accuse;
Described interface display module is used for showing test operation information or described test report.
Test system the most as claimed in claim 2, it is characterised in that described test system also includes test Standard module, described test result determination module is for by test result and the survey in described testing standard module Test-object standard is compared, and show that test result judges.
5. utilize the test system as described in arbitrary in Claims 1-4 to carry out the method tested, its It is characterised by, including:
By described test PC main frame input test information, described test information includes Board Under Test card information and survey Examination project information;
Test process is divided into multiple test submodule according to described test information by oscillograph, by running institute State each test submodule and carry out test video graphic array VGA signal;
Test result is shown by described test PC main frame after having tested.
6. method as claimed in claim 5, it is characterised in that described test complete after by described test After PC main frame display test result, also include: described test PC main frame is by described test result and standard Test result is compared, and show that test result judges, and generates test report.
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US10746761B2 (en) * 2015-02-10 2020-08-18 Keithley Intstruments, LLC Dynamically configurable remote instrument interface
CN106033093A (en) * 2015-03-10 2016-10-19 中芯国际集成电路制造(上海)有限公司 Auxiliary device for testing
CN104913701A (en) * 2015-05-19 2015-09-16 谢沛欣 Novel processing equipment modification method
CN105511977B (en) * 2015-12-04 2019-02-22 北京远特科技股份有限公司 A kind of onboard navigation system test method and device
CN105979257B (en) * 2016-05-17 2018-06-26 京东方科技集团股份有限公司 A kind of VGA signal measurement apparatus and method
CN106776171A (en) * 2016-12-13 2017-05-31 郑州云海信息技术有限公司 A kind of automatization test system and method
CN108226681A (en) * 2018-01-15 2018-06-29 郑州云海信息技术有限公司 The method and system that a kind of remote control oscillograph is measured into row clock signal electrical characteristic
CN109342927A (en) * 2018-11-01 2019-02-15 郑州云海信息技术有限公司 A kind of measuring signal integrality method and apparatus
CN109406988B (en) * 2018-11-02 2020-11-17 成都天衡智造科技有限公司 Rapid positioning analysis system and method for simulating abnormal overshoot of IC test
CN110850136A (en) * 2019-11-12 2020-02-28 深圳宝龙达信创科技股份有限公司 Oscilloscope test method, terminal equipment and computer readable storage medium

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