CN203590370U - General video signal performance parameter automatic testing device - Google Patents
General video signal performance parameter automatic testing device Download PDFInfo
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- CN203590370U CN203590370U CN201320788250.7U CN201320788250U CN203590370U CN 203590370 U CN203590370 U CN 203590370U CN 201320788250 U CN201320788250 U CN 201320788250U CN 203590370 U CN203590370 U CN 203590370U
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Abstract
The utility model discloses a general video signal performance parameter automatic testing device, which comprises a testing device and a testing adapter, wherein the testing device comprises a PXI test chassis, an analog video signal generator, an LVSD output module, a video analysis module, a power supply box and a test interface array, wherein signals of the PXI test chassis, the analog video signal generator, the LVSD output module and the video analysis module are distributed to the test interface array to interact with the testing adapter, and the power supply box provides power for the test resource modules. With the application of the general video signal performance parameter automatic testing device, the automatic test on multi-channel video signal performance parameters can be realized.
Description
Technical field
The utility model relates to Avionic Products automatic test technology field, particularly the automatic test of multi-channel video signal performance parameter.
Background technology
In the automatic test technology field of Avionic Products, for the method for testing of conventional vision signal, be limited to more the function of signal is tested, there is no the automatic testing equipment of the performance parameter of signal-oriented own.And product is on the market all that single kind vision signal is tested conventionally, the general video measurement device of neither one completes the conventional test video signal of multichannel of avionics module.
Utility model content
The purpose of this utility model is to provide a kind of generic video signal performance parameter automatic testing device, this equipment can be to multiple composite video (PAL ?D system and NTSC ?M system), simulation RGsB video, VGA interface video (VGA video, SVGA video, XGA video), Y/C video, the classical insulation of the signals such as LVDS carries out automatic test.
The purpose of this utility model is achieved through the following technical solutions:
A kind of generic video signal performance parameter automatic testing device, comprise testing apparatus and test adapter, described testing apparatus comprises PXI test cabinet, analog video signal generator, LVDS conveyor module, analysis module, power supply box, test interface array, the signal of described PXI test cabinet, analog video signal generator, LVDS conveyor module, analysis module is assigned on test interface array mutual with test adapter, and power supply box provides power supply for each test resource module.
Further, described PXI test machine case comprises computer module, LVDS acquisition module, video frequency switching module, RS422 module, and computer module is controlled each test resource module.
Further, generic video signal performance parameter automatic testing device also comprises signal process box, and analog video signal generator output Yi road composite video signal is expanded.
Further, described test adapter includes the signal conditioning circuit for signal controlling and the stimulating module of tested module working environment being provided and being used for strengthening signal driver ability, reducing signal interference and carry out single-ended differential signal conversion.
Further, described test adapter comprises test interface plate, tested module inserts the socket on test interface plate, test interface plate is connected via switching plate with inner each adaptation module of test adapter, by stube cable, receiving test interface array ITA again holds, whole test adapter, by hot-wire array ITA end and the engagement of RCV end, is connected with the test resource signal on testing apparatus.
Further, described test interface array select VPC ?the parts of G12.
Compared with prior art, beneficial effect of the present invention is:
1) at present domestic there is no can be carried out the equipment of test automatically to various simulations, digital video signal performance parameter, applies the testing equipment of this measuring technology development and can fill up this blank;
2) promote the use of this testing apparatus, can improve level and the ability of test video signal, find in time and get rid of the incipient fault of tested module, thereby improve the quality level of vision signal module product, reduce the maintenance cost of product life cycle management.
3) apply this generic video signal-testing apparatus and can realize all kinds of modules that comprise vision signal are tested automatically, reduced the development of special measurement equipment, reduced greatly research fund and the maintenance cost of testing equipment.
Accompanying drawing explanation
Fig. 1 is a kind of generic video signal performance of the utility model parameter automatic testing device operation principle schematic diagram
Fig. 2 is the inner connection layout of a kind of generic video signal performance of the utility model parameter automatic testing device
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
Generic video signal performance parameter automatic testing device, comprises testing apparatus and test adapter two parts, and corresponding software program, has completed with the test joint-trial of tested module and has verified, detailed design is described as follows.
Fig. 1 is the operation principle schematic diagram of testing apparatus, and in generic video signal performance parameter automatic testing device, each resource module is controlled at PXI under the control of computer, and operation testing apparatus test program, realizes the automation of whole test process.Fig. 2 is the inner connection layout of testing apparatus.
Testing apparatus main body is tested cabinet, analog video signal generator, LVDS output module, analysis module, power supply box, test interface array and input-output equipment (keyboard, mouse, display etc.) by PXI and is formed.The signal of all test resource modules is assigned on test interface array mutual with tested module.Test interface array select VPC ?the parts of G12, and according to the layout of predefined by test resource signal access test interface array.
Computer module in PXI cabinet is controlled all resources; LVDS acquisition module is used for gathering LVDS digital video signal, by corresponding software in computer module, carries out analytical test; Video frequency switching module for the analog video of collection is switched to respectively, analyze and monitor is observed by analysis module; RS422 module provides 422 communication functions with tested module.Analysis module, analog video signal generator, LVDS output module and signal process box are positioned in rack with independent separately structure, and power supply box is its power supply.Analysis module is carried out performance evaluation to the vision signal gathering; Analog video signal generator provides analog video output, wherein a road composite video signal by signal process box expand generate some frequency, pulse, synchronously, blanking signal etc., meet special video signal testing demand, signal process box is tackled the specific demand of different tested modules and can be changed.Derived digital signal is produced by LVDS output module.
1, the configuration of testing apparatus and formation:
Testing apparatus is connect to test adapter and is provided as lower interface by test interface array:
A) test interface:
11 road input signal channels: composite video 2 tunnels, analog rgb video, Y/C video, VGA video Ge Yi road, synchronizing signal (row, field synchronization, composite sync, mixed blanking input Ge Yi road), point is inputted 1 tunnel, LVDS digital video signal 1 tunnel frequently
15 road output signal channels: composite video 2 tunnels, VGA interface video 1 tunnel, Y/C video 1 tunnel, RGB analog video 2 tunnels, LVDS vision signal 1 tunnel, count pulse is exported 2 tunnels, synchronizing signal (row, field synchronization, composite sync, mixed blanking output Ge Yi road), point is exported 1 tunnel frequently, digital rgb (242) output 1 tunnel;
B) control interface: 1 road RS422,2 road RS232,1 road Ethernet interface;
Power interface: ± 5V 2A ,+5V 4A, ± 15V 1A ,+3.3V Ge Yi road;
2, test adapter
Test adapter contains signal controlling and stimulating module, and tested module working environment is provided, and contains signal conditioning circuit, is used for strengthening signal driver ability, reduces signal interference and carry out single-ended differential signal conversion.Socket on the test interface plate of tested module insertion test adapter, test interface plate is connected via switching plate with the adaptation module in test adapter, by stube cable, receiving test interface array ITA again holds, whole test adapter, by hot-wire array ITA end and the engagement of RCV end, is connected with each test resource signal on generic video signal performance parameter automatic testing device.
3, testing software
Testing software divides testing apparatus testing software and adapter special test software two parts.
Testing apparatus software development adopts the programmed environment of Visual C++6.0, comprises following 6 parts:
A) human-computer interaction interface module: adopt patterned human-computer interaction interface (GUI), coordinate the relation of each functional module, be responsible for task scheduling, formed by title bar, menu bar, result bar, test window etc.;
B) data management module: the data that realize gathering in test process and generating manage, analyze, and generate report;
C) resource management module: for recording in detail the information of each test resource module, comprise producer, resource name, software version, the information such as port number, electrical characteristic, each pin function definition;
D) metering, selftest module: for the metering of testing apparatus and oneself are detected, guarantee that testing apparatus is in normal operating conditions;
E) test module: utilize the function in VIDEOMASTER ANALYZE software kit, complete the analysis to each parameter of test video signal, comprise composite video amplitude characteristic parameter: sync level, blanking level, peak white, black level and blanking level difference, vision signal gray value, vision signal chromatic value; Composite video time response parameter: field frequency, field blanking width, field synchronization width, line frequency and tolerance, horizontal blanking width, the synchronous width of row, horizontal blanking impulse front porch width, horizontal synchronizing pulse edge settling time; VGA interface video performance parameter: synchronous logic " 1 ", synchronous logic " 0 ", synchronous edge settling time, row synchronization jitter, row field synchronization width, row field sync period, row field synchronization front porch width, row field synchronization back porch width, a row effective video width, luminance video maximum, luminance video minimum value, video edge settling time, interchannel voltage mismatch, interchannel time mismatch.Utilize VISION software kit Pattern and Geometric Matching function that the video image receiving is carried out to pattern with the standard picture of preservation and geometric figure mates, detect whether there is picture material disappearance; Utilize in addition the character information in Optical Character Recognition/Verfication Function detection image.
F) help module: take multimedia or textual form as operating personnel's guide of offering help, comprise the information such as operating procedure, operation indicating and fault prompting.
Adapter special test software is mutual by the test command of RS232 Interface realization and testing apparatus, controls tested module and testing apparatus and tests alternately, and test result is uploaded to testing apparatus.Adapter software is developed under TORNADO programmed environment, pours in the memory of adaptor module after having debugged.
4, the automatic test approach of vision signal performance parameter
The measurement of signal is mainly completed by software control video matrix switching card, VideoMUX terminal box, and part signal can show on monitor.The pumping signal needing is produced by analog video signal generator.
A) establishment test event, parameter configuration table: the detecting informations such as definition test event, test parameter, Signal coding, test resource passage, generate test signal/resource distribution table and coded message storehouse, determine the test events such as electric parameter of vision signal;
B) measurement and control host computer sends instruction control simulation flying-spot video generator output signal excitation (point frequently, video, synchronous etc.) or LVDS output module is exported required video, and measurement and control host computer is by RS232 simultaneously, RS422 or the excitation of network interface output control command;
C) test adapter is converted to parallel bus excitation by control command excitation, and signal excitation and parallel bus excitation that tested module response is received enter into relevant work state outputting video signal
D) testing apparatus utilizes measuring instrument analysis module or LVDS video frequency collection card carry out collection analysis and draw measurement result the vision signal of tested module output.
Claims (6)
1. a generic video signal performance parameter automatic testing device, comprise testing apparatus and test adapter, it is characterized in that described testing apparatus comprises PXI test cabinet, analog video signal generator, LVDS output module, analysis module, power supply box, test interface array, the signal of described PXI test cabinet, analog video signal generator, LVDS output module, analysis module is assigned on test interface array mutual with test adapter, and power supply box provides power supply for each test resource module.
2. a kind of generic video signal performance parameter automatic testing device according to claim 1, it is characterized in that described PXI test machine case comprises computer module, LVDS acquisition module, video frequency switching module, RS422 module, computer module is controlled each test resource module.
3. a kind of generic video signal performance parameter automatic testing device according to claim 1, is characterized in that also comprising signal process box, and analog video signal generator output Yi road composite video signal is expanded.
4. a kind of generic video signal performance parameter automatic testing device according to claim 1, is characterized in that described test adapter includes the signal conditioning circuit for signal controlling and the stimulating module of tested module working environment being provided and being used for strengthening signal driver ability, reducing signal interference and carry out single-ended differential signal conversion.
5. according to a kind of generic video signal performance parameter automatic testing device described in claim 1 or 4, it is characterized in that described test adapter comprises test interface plate, tested module inserts the socket on test interface plate, test interface plate is connected via switching plate with inner each adaptation module of test adapter, by stube cable, receiving test interface array ITA again holds, whole test adapter, by test interface array ITA end and the engagement of RCV end, is connected with the test resource signal on testing apparatus.
6. a kind of generic video signal performance parameter automatic testing device according to claim 1, it is characterized in that described test interface array select VPC ?the parts of G12.
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| CN201320788250.7U CN203590370U (en) | 2013-12-03 | 2013-12-03 | General video signal performance parameter automatic testing device |
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| CN201320788250.7U CN203590370U (en) | 2013-12-03 | 2013-12-03 | General video signal performance parameter automatic testing device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105068445A (en) * | 2015-07-31 | 2015-11-18 | 中国航空无线电电子研究所 | Multifunctional signal route adaption matrix |
| CN105573141A (en) * | 2014-10-15 | 2016-05-11 | 哈尔滨飞机工业集团有限责任公司 | Touch-type photoelectric pod system emulator |
| CN106454329A (en) * | 2016-10-26 | 2017-02-22 | 中国电子产品可靠性与环境试验研究所 | Image acquisition detection system and method |
| CN107219445A (en) * | 2017-06-15 | 2017-09-29 | 南通同洲电子有限责任公司 | A kind of pressure resistant testing device for the equipment with video interface |
| CN108614228A (en) * | 2018-05-23 | 2018-10-02 | 中国电子科技集团公司第四十研究所 | Test device, system and the equipment of module occur for broadband multiple spot reference signal |
-
2013
- 2013-12-03 CN CN201320788250.7U patent/CN203590370U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105573141A (en) * | 2014-10-15 | 2016-05-11 | 哈尔滨飞机工业集团有限责任公司 | Touch-type photoelectric pod system emulator |
| CN105068445A (en) * | 2015-07-31 | 2015-11-18 | 中国航空无线电电子研究所 | Multifunctional signal route adaption matrix |
| CN106454329A (en) * | 2016-10-26 | 2017-02-22 | 中国电子产品可靠性与环境试验研究所 | Image acquisition detection system and method |
| CN107219445A (en) * | 2017-06-15 | 2017-09-29 | 南通同洲电子有限责任公司 | A kind of pressure resistant testing device for the equipment with video interface |
| CN108614228A (en) * | 2018-05-23 | 2018-10-02 | 中国电子科技集团公司第四十研究所 | Test device, system and the equipment of module occur for broadband multiple spot reference signal |
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Granted publication date: 20140507 |