CN103149391B - A kind of testing jig - Google Patents
A kind of testing jig Download PDFInfo
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- CN103149391B CN103149391B CN201310073389.8A CN201310073389A CN103149391B CN 103149391 B CN103149391 B CN 103149391B CN 201310073389 A CN201310073389 A CN 201310073389A CN 103149391 B CN103149391 B CN 103149391B
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Abstract
The invention discloses a kind of testing jig, comprise testing jig body, cavity is provided with in described testing jig body, install in this cavity and accompany test plate (panel), this testing jig body upper end is provided with district to be measured, in district to be measured, test plate (panel) to be measured is installed, the top of described test plate (panel) to be measured is provided with test top board movable up and down, test top board there are some thimbles, test top board have folding process and on move past journey, in folding process, thimble contacts with test plate (panel) to be measured, tests, on move past thimble in journey and be separated with test plate (panel) to be measured, stop test.The present invention can realize automatic test, can reduce the workload of tester, and the simple testing process of system.
Description
Technical field
The present invention relates to the technical field of testing apparatus, particularly relate to a kind of low cost, can the testing jig of frequency converter PCBA test macro of convenient and swift test.
Background technology
Frequency converter is the important component part that industrial transmission controls, and is also the visual plant of green energy conservation simultaneously.But due to the otherness of product components and parts, the skill level difference of assembly crewman, the frequency converter quality under same design can be caused different; So the quality of guarantee frequency converter product after all having to pass through in various degree test from device to each stage of frequency converter complete machine.And from device to the test in each stage of frequency converter complete machine, the test of PCBA module (i.e. the set of converter power supply plate, control panel, keyboard, test fixture) is the widest to problem coverage rate, cost is minimum, therefore the test of PCBA is of paramount importance test in the manufacture production of frequency converter.
Before PCBA shipment, generally need to test its connection, data transmission etc., to be rejected by defective products, current testing jig can only the PCBA board of single test a kind of edition type, for different PCBA board, need other movable testing jig just can complete, thus add production cost, existing testing apparatus, production efficiency is low, poor universality, the operation intensity of staff is large, test result poor stability.
The method of testing of traditional test frame be tester by PCBA to be measured, accompany examination PCBA, direct supply, electronic load etc. to link together, then tester changes test condition according to different test request and measures with the instrument such as multimeter, oscillograph, logging test results again, judge again finally by the analysis of test result, this loaded down with trivial details test mode wastes time and energy and there is very large personal error, larger to the arrangement difficulty of detecting information.
Summary of the invention
The object of the present invention is to provide one can carry out test testing jig to different test board easily and efficiently.
In order to achieve the above object, the present invention is achieved by the following technical solutions: a kind of testing jig, comprise testing jig body, cavity is provided with in described testing jig body, install in this cavity and accompany test plate (panel), this testing jig body upper end is provided with district to be measured, in district to be measured, test plate (panel) to be measured is installed, the top of described test plate (panel) to be measured is provided with test top board movable up and down, test top board there are some thimbles, test top board have folding process and on move past journey, contact with test plate (panel) to be measured in folding process, test, on move past journey and be separated with test plate (panel) to be measured, stop test.
Preferably, described test plate (panel) to be measured is connected with control system, and described control system is connected with scan module, DC power supplier, electronic load module, data acquisition module and Signal-regulated kinase; Described DC power supplier output terminal is connected with the direct-flow input end of test plate (panel) to be measured, and the load input terminal of described electronic load module is connected with the DC output end of test plate (panel) to be measured, and described Signal-regulated kinase is connected with data acquisition module, test plate (panel) to be measured respectively; Described Signal-regulated kinase, for realizing the Route Selection of signal transmission passage between data acquisition module and test plate (panel) to be measured, is treated processing signals and is zoomed in or out process, also treats processing signals and carries out filtering process.
Preferably, described Signal-regulated kinase comprises: for realizing the switch matrix module of the Route Selection of signal transmission passage between data acquisition module and test plate (panel) to be measured, the signal Zoom module of process is zoomed in or out for treating processing signals, carry out the signal filtering module of filtering process for treating processing signals, described signal Zoom module and signal filtering module installation are in switch matrix module.
Preferably, described switch matrix module is the switch that single-pole double-throw switch (SPDT) is combined, described signal Zoom module is several resistance be arranged in each single-pole double-throw switch (SPDT), and described signal filtering module is several electric capacity be arranged in each single-pole double-throw switch (SPDT).
Preferably, also comprise the communication conversion module be connected with control system, described DC power supplier, electronic load module, data acquisition module and test plate (panel) to be measured are connected with communication conversion module respectively.
Preferably, described scan module is scanner, and described DC power supplier is programmable DC power supply, and described electronic load module is programmable electronic load, described data acquisition module is programmable data capture card, and described communication conversion module is the set that USB turns serial ports, USB turns CAN.
Preferably, also comprise mixed-media network modules mixed-media, described mixed-media network modules mixed-media comprises router, server and at least one client, and described router is connected with control system, and described server and client are connected with router respectively.
Preferably, described test top board realizes test by pneumatic mode.
Compared with prior art, tool of the present invention has the following advantages and beneficial effect:
1, testing jig of the present invention can be tested for different test boards, changes test board convenient, fast, overcomes the shortcoming of a certain test board of test that testing jig in prior art can only be single.
2, can automatic test be realized, the workload of tester can be reduced, and the simple testing process of system, the test duration can be foreshortened to tens seconds from original a few minutes, greatly reduce testing cost.
Accompanying drawing explanation
Fig. 1 is the structural drawing of testing jig of the present invention;
Fig. 2 is the model calling frame diagram of test macro of the present invention;
Fig. 3 is the frame diagram of Signal-regulated kinase of the present invention;
Fig. 4 is the frame diagram that testing jig test macro of the present invention is optimized further;
Fig. 5 is the display figure of the EXCEL document embedded in control system of the present invention;
Fig. 6 is method of testing process flow diagram of the present invention.
Embodiment
Below in conjunction with example and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
As shown in Figure 1, the testing jig of the present embodiment, comprise testing jig body 1, cavity 2 is provided with in testing jig body 1, install in this cavity 2 and accompany test plate (panel) 3, this testing jig body 1 upper end is provided with district 4 to be measured, in district 4 to be measured, test plate (panel) 5 to be measured is installed, above test plate (panel) 5 to be measured, be provided with test top board 6 movable up and down, test top board 6 on have some thimbles 7, and test top board 6 have folding process and on move past journey, in folding process, thimble 7 contacts with test plate (panel) 5 to be measured, test, above move past thimble 7 in journey and be separated with test plate (panel) 5 to be measured, stop test.
As shown in Figure 2, test plate (panel) 5 connection control system 8 to be measured, control system 8 is connected with scan module 9, DC power supplier 10, electronic load module 11, data acquisition module 12 and Signal-regulated kinase 13.Wherein: control system 8, DC power supplier 10, electronic load module 11, data acquisition module 12, the power input of Signal-regulated kinase 13 and scan module 9 is connected with electrical network, DC power supplier 10 output terminal is connected with the direct-flow input end of test plate (panel) 5 to be measured, the load input terminal of electronic load module 11 is connected with the DC output end of test plate (panel) 5 to be measured, control system 8 respectively with scan module 9, DC power supplier 10, electronic load module 11, data acquisition module 12 and test plate (panel) to be measured 5 connect, Signal-regulated kinase 13 respectively with data acquisition module 12, test plate (panel) 5 to be measured connects.
As shown in Figure 3, Signal-regulated kinase 13: containing switch matrix module 14, can realize the Route Selection of signal transmission passage between data acquisition module 12 and test plate (panel) to be measured 5; Containing signal Zoom module 15, can according to requiring that treating processing signals zooms in or out, with demand signals different between matched data acquisition module 12 from test plate (panel) 5 to be measured; Containing signal filtering module 16, can according to requiring that treating processing signals carries out filtering, to eliminate extra undesired signal.And above-mentioned switch matrix module 14 can be a matrix switch, it also can be the switch that a series of relay or single-pole double-throw switch (SPDT) are combined; Signal Zoom module 15 can be mounted in several resistance in each single-pole double-throw switch (SPDT), and signal filtering module 16 can be mounted in several electric capacity in each single-pole double-throw switch (SPDT).
Test plate (panel) 5 to be measured is the set of the power panel of frequency converter, control panel, keyboard and test fixture.Test fixture placed the power panel, control panel and the keyboard that need test.When carrying out power panel test, can be connected with keyboard power panel, then be tested by this test macro.When carrying out control panel test, can be connected with keyboard control panel, then be tested by this test macro.
In addition, in order to better realize communication function, as shown in Figure 4, frequency converter testing jig of the present invention also comprises the communication conversion module 17 be connected with control system 8, and DC power supplier 10, electronic load module 11, data acquisition module 12 and test plate (panel) to be measured 5 are connected with communication conversion module 17 respectively.
And can realize networking and the function of data sharing in order to native system, also comprise mixed-media network modules mixed-media 18, described mixed-media network modules mixed-media 18 comprises router one 9, server 20 and at least one client 21, and router one 9 is connected with control system 8, server 20 and client 21 are connected with router one 9 respectively.
In the present embodiment, scan module 9 is preferably scanner, DC power supplier 10 is preferably programmable DC power supply, electronic load module 11 is preferably programmable electronic load, data acquisition module 12 is preferably programmable data capture card, and communication conversion module 17 is USB turns serial ports, USB turns CAN set.
As shown in Figure 6, A-L provides the method for testing of testing jig, comprises the following steps:
The first step, prepare PCBA to be measured (i.e. test plate (panel) to be measured), and carry out bar code scan, scanning information is fed back in control system.
Second step, PCBA to be measured is placed in PCBA module, for PCBA module switches on power.
3rd step, test relevant information is set, and etc. to be tested, then carrying out the 4th step if any exact p-value, then still to continue as there not being exact p-value etc. to be tested.
4th step, foundation demand are carried out system and are opened and closed automatically electronic load, and gather each supply voltage data of PCBA to be measured.
5th step, gather each control signal data of PCBA to be measured; System reads PCBA each supply voltage required standard value and correspondingly with PCBA to be measured each supply voltage data of the 4th step collection to compare, and exports comparative result.
6th step, gather PCBA to be measured each PWM drive singal data; System reads the standard value of PCBA each control signal voltage request and correspondingly with PCBA to be measured each control signal data of the 5th step collection to compare, and exports comparative result; The comparative result that each for the PCBA to be measured of the 4th step collection supply voltage data and the 5th step export is saved in system.
7th step, gather the data of each defencive function of PCBA to be measured; System reads PCBA each PWM drive singal voltage and dead band required standard value and correspondingly with PCBA to be measured each PWM drive singal data of the 6th step collection to compare, and exports comparative result; The comparative result that each for the PCBA to be measured of the 5th step collection control signal data and the 6th step export is saved in system.
8th step, system read the standard value of PCBA each defencive function data demand and correspondingly with the data of each defencive function of PCBA to be measured of the 7th step collection to compare, and export comparative result; The comparative result that PCBA to be measured each PWM drive singal data of the 6th step collection and the 7th step export is saved in system.
9th step, the comparative result that the data of each defencive function of PCBA to be measured of the 7th step collection and the 8th step export to be saved in system.
Tenth step, end test.
In the present embodiment, above-mentioned each control signal data comprise fan run the control signal such as control, the Control that powers on, bus control for brake effective or invalid time magnitude of voltage; Above-mentioned each PWM drive singal data comprise the Dead Time of the high voltage limit amplitude of three-phase 6 road pwm signal, lower bound voltage magnitude, every bridge pwm signal up and down mutually; Above-mentioned each defencive function data comprise overvoltage protection value, under-voltage protection value, overcurrent protection value, short-circuit protection, open-phase protection and protection time delay etc.
In the present invention; control system 8 adopts computing machine; program has been installed; and be provided with data storage cell, and the standard value of the standard value of each for PCBA supply voltage required standard value, PCBA each control signal voltage request, PCBA each PWM drive singal voltage and dead band required standard value and each defencive function data demand of PCBA is all stored in the data storage cell established in this control system.
And this data storage cell is the EXCEL document of an embedding, in EXCEL document, include the standard value needing the various test datas transferred in the step e-step J in Fig. 6.Below in conjunction with Fig. 5 the signals collecting of the 4th step-nine step in Fig. 6, signal to be compared and signal is preserved and elaborated:
Signal acquisition process comprises: signal acquisition module 13 gathers the test data of each test event;
Signal comparison procedure comprises: transfer EXCEL document in a computer, and in EXCEL document, save the standard value of this test data, and standard value comprises the first limit value and the second limit value, and the first limit value and the second limit value can be equal, also can not wait (namely the second limit value is greater than the first limit value); Wherein, when the second limit value is greater than the first limit value; When comparative result is true value, test value is between the first limit value and the second limit value, and test value is up to standard; When comparative result is falsity, test value is less than the first limit value or is greater than the second limit value, and test value is not up to standard;
When the second limit value equals the first limit value; When comparative result is true value, test value equals the first limit value, and test value is up to standard; When comparative result is falsity, test value is greater than or less than the first limit value, and test value is not up to standard.
Signal is preserved process and is comprised: the comparative result in signal comparison procedure is put into EXCEL document, with " actual value ", the form of " judged result " and " fault explanation " is preserved, the data of actual test are stored in " actual value ", each control signal data of the PCBA namely gathered, each PWM drive singal data, and each defencive function data, true value or falsity is stored in " judged result ", i.e. " 1 " or " 0 ", and " 1 " represents that test result is correct, up to standard, namely there are following two kinds of situations: one is that the second limit value is when being greater than the first limit value, test value is between the first limit value and the second limit value, two is second limit values when equaling the first limit value, and test value equals the first limit value, " 0 " represents that test result is incorrect, not up to standard, namely there are less than two kinds situations equally: one is the second limit value when being greater than the first limit value, and test value is less than the first limit value or is greater than the second limit value, two is second limit values when equaling the first limit value, and test value is greater than or less than the first limit value.
Meanwhile, in " fault explanation ", show numerical value according to above " judged result " bigger than normal or less than normal, remind tester intuitively with this, fault where.
Owing to embedded in corresponding EXCEL document in control system 8, and when the testing standard value of different PCBA test events needs to change, can edit the first limit value in the EXCEL document embedded and the second limit value, operation is very easy.In addition, with reference to the process of step F-J in Fig. 6, because signal comparison procedure in prior art is the serial process gathering successively, process, preserve; And in the present invention, optimize signal comparison procedure, be no longer the such serial process of prior art, but a kind of asynchronous parallel processing procedure, specifically gather, acquisition and processing, gather, process and preserve such form.Greatly can improve the efficiency of process.
Above-described embodiment is the present invention's preferably embodiment; but embodiments of the present invention are not restricted to the described embodiments; change, the modification done under other any does not deviate from Spirit Essence of the present invention and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (5)
1. a testing jig, comprise testing jig body, it is characterized in that, cavity is provided with in described testing jig body, install in this cavity and accompany test plate (panel), this testing jig body upper end is provided with district to be measured, in district to be measured, be provided with test plate (panel) to be measured, the top of described test plate (panel) to be measured is provided with test top board movable up and down, and test top board has some thimbles, test top board have folding process and on move past journey, in folding process, thimble contacts with test plate (panel) to be measured, tests, and above moves past Cheng Dingzhen and is separated with test plate (panel) to be measured, stop test, described test plate (panel) connection control system to be measured;
Described control system is connected with scan module, DC power supplier, electronic load module, data acquisition module and Signal-regulated kinase; The power input of control system, DC power supplier, electronic load module, data acquisition module, Signal-regulated kinase and scan module is connected with electrical network, DC power supplier output terminal is connected with the direct-flow input end of test plate (panel) to be measured, the load input terminal of electronic load module is connected with the DC output end of test plate (panel) to be measured, control system is connected with scan module, DC power supplier, electronic load module, data acquisition module and test plate (panel) to be measured respectively, and Signal-regulated kinase is connected with data acquisition module, test plate (panel) to be measured respectively; Described Signal-regulated kinase, for realizing the Route Selection of signal transmission passage between data acquisition module and test plate (panel) to be measured, is treated processing signals and is zoomed in or out process, also treats processing signals and carries out filtering process;
Described Signal-regulated kinase: containing switch matrix module, for realizing the Route Selection of signal transmission passage between data acquisition module and test plate (panel) to be measured; Containing signal Zoom module, require that treating processing signals zooms in or out, with demand signals different between matched data acquisition module from test plate (panel) to be measured for foundation; Containing signal filtering module, require that treating processing signals carries out filtering, to eliminate extra undesired signal for foundation; Described switch matrix module is the switch that a series of single-pole double-throw switch (SPDT) is combined; Signal Zoom module is mounted in several resistance in each single-pole double-throw switch (SPDT), and signal filtering module is mounted in several electric capacity in each single-pole double-throw switch (SPDT).
2. testing jig according to claim 1, is characterized in that, also comprises the communication conversion module be connected with control system, and described DC power supplier, electronic load module, data acquisition module and test plate (panel) to be measured are connected with communication conversion module respectively.
3. testing jig according to claim 2, it is characterized in that, described scan module is scanner, described DC power supplier is programmable DC power supply, described electronic load module is programmable electronic load, described data acquisition module is programmable data capture card, and described communication conversion module is the set that USB turns serial ports, USB turns CAN.
4. testing jig according to claim 1, it is characterized in that, also comprise mixed-media network modules mixed-media, described mixed-media network modules mixed-media comprises router, server and at least one client, described router is connected with control system, and described server and client are connected with router respectively.
5. testing jig according to claim 1, is characterized in that, described test top board realizes test by pneumatic mode.
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| CN201310073389.8A CN103149391B (en) | 2013-03-07 | 2013-03-07 | A kind of testing jig |
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| CN201310073389.8A CN103149391B (en) | 2013-03-07 | 2013-03-07 | A kind of testing jig |
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| CN103149391B true CN103149391B (en) | 2016-04-06 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103454565A (en) * | 2013-08-31 | 2013-12-18 | 苏州赛斯德工程设备有限公司 | High-voltage groove internal voltage testing device |
| CN104375017A (en) * | 2014-05-26 | 2015-02-25 | 深圳市佛斯特科技有限公司 | Frequency changer whole machine test device |
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Address after: 510663 No. 17 incense Hill Road, science and Technology Town, Guangzhou hi tech Development Zone, Guangdong, China Patentee after: GUANGZHOU SANJING ELECTRIC CO., LTD. Address before: 510663 No. 17 incense Hill Road, science and Technology Town, Guangzhou hi tech Development Zone, Guangdong, China Patentee before: Guangzhou Sanjing Electric Co., Ltd. |