CN103149528A - System and method for testing transducer PCBA (printed circuit board assembly) - Google Patents
System and method for testing transducer PCBA (printed circuit board assembly) Download PDFInfo
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- CN103149528A CN103149528A CN2013100733883A CN201310073388A CN103149528A CN 103149528 A CN103149528 A CN 103149528A CN 2013100733883 A CN2013100733883 A CN 2013100733883A CN 201310073388 A CN201310073388 A CN 201310073388A CN 103149528 A CN103149528 A CN 103149528A
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Abstract
The invention discloses a system and a method for testing a transducer PCBA (printed circuit board assembly). The system comprises a PCBA module, a control system connected with the PCBA module, and a scanning module, a direct current power supply module, an electronic load module, a data acquisition module and a signal conditioning module respectively connected with the control system, wherein the output end of the direct current power supply module is connected with the direct current input end of the PCBA module; the load input end of the electronic load module is connected with the direct current output end of the PCBA module; the signal conditioning module is respectively connected with the data acquisition module and the PCBA module; and the signal conditioning module is used for realizing route selection of a signal transmitting passage between the data acquisition module and the PCBA module, amplifying or shortening a to-be-processed signal, and filtering the to-be-processed signal. By the system and the method, the automation test is realized, the work load of testers is reduced, and the test process of the system is simple and convenient.
Description
Technical field
The present invention relates to a kind of measuring technology, relate in particular to a kind of low cost, can convenient and swift test frequency converter PCBA test macro and method of testing thereof.
Background technology
Frequency converter is the important component part that industrial transmission is controlled, and is also the visual plant of green energy conservation simultaneously.But due to the otherness of product components and parts, assembly crewman's skill level difference, can cause the frequency converter quality under same design different; So the stages from device to the frequency converter complete machine all must be through the quality of guarantee frequency converter product after test in various degree.And the test of the stages from device to the frequency converter complete machine, the test of PCBA module (being the set of converter power supply plate, control panel, keyboard, test fixture) is the widest to the problem coverage rate, cost is minimum, thus the manufacturing that the test of PCBA is frequency converter produce in of paramount importance test.
Traditional method of testing is the tester with PCBA to be measured, accompanies examination PCBA, direct supply, electronic load etc. to link together, then the tester changes test condition and measures with instruments such as multimeter, oscillographs according to different test requests, logging test results again, at last by analysis of test results is judged again, this loaded down with trivial details test mode wastes time and energy and has very large personal error, and is larger to the arrangement difficulty of detecting information.
Recently, although PCBA automatization test system and corresponding method of testing have also occurred; But those automatization test systems are all to adopt multiple instrument integration together, and the volume of system is also larger, and method of testing is also to adopt the method for sequential testing successively to test.Like this, the cost of development of test macro is higher, the test duration that need is also long.
Summary of the invention
The first purpose of the present invention is to provide a kind of cost low, and the frequency converter PCBA test macro that can test frequency converter PCBA easily and efficiently is intended to solve the technical matters that existing PCBA measuring technology cost is high, the test duration is long.
The second purpose of the present invention is to provide a kind of PCBA method of testing that adapts to above-mentioned frequency converter PCBA test macro, also is intended to solve the technical matters that existing PCBA measuring technology cost is high, the test duration is long.
The first purpose of above-mentioned proposition, the present invention is achieved by the following technical solutions: a kind of frequency converter PCBA test macro, comprise PCBA module, the control system that is connected with the PCBA module, and the scan module that is connected with control system respectively, DC power supplier, electronic load module, data acquisition module and signal condition module; Described DC power supplier output terminal is connected with the direct-flow input end of PCBA module, and the load input terminal of described electronic load module is connected with the dc output end of PCBA module, and described signal condition module is connected with data acquisition module, PCBA module respectively;
Described signal condition module is used for realizing the Route Selection of signal transmission channels between data acquisition module and PCBA module, treats processing signals and zooms in or out processing, also treats processing signals and carries out the filtering processing.
Described signal condition module comprises: the switch matrix module that is used for realizing the Route Selection of signal transmission channels between data acquisition module and PCBA module, be used for treating the signal Zoom module that processing signals zooms in or out processing, be used for treating processing signals and carry out the signal filtering module that filtering is processed, described signal Zoom module and signal filtering module are arranged in the switch matrix module.
Described switch matrix module is the switch that single-pole double-throw switch (SPDT) is combined, and described signal Zoom module is several resistance that are arranged in each single-pole double-throw switch (SPDT), and described signal filtering module is several electric capacity that are arranged in each single-pole double-throw switch (SPDT).
The second purpose of the present invention is achieved through the following technical solutions: the frequency converter PCBA method of testing based on above-mentioned test macro comprises the following steps:
The first step, prepare PCBA 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 the PCBA module, for the PCBA module switches on power;
The 3rd step, the test relevant information is set, and etc. to be tested, if any confirming that test carried out for the 4th step, as there do not have the test of confirmation to continue etc. to be to be tested;
The 4th step, carry out system according to demand and open and close automatically the electronic load module, and gather each supply voltage data of PCBA to be measured;
The corresponding comparison of each supply voltage data of PCBA to be measured that the 5th step, each control signal data of collection PCBA to be measured, system read each supply voltage required standard value of PCBA and gather with the 4th step, the output comparative result;
The 6th goes on foot, gathers each PWM of PCBA to be measured drives signal data, and system reads the standard value of each control signal voltage request of PCBA and corresponding comparison of each control signal data of PCBA to be measured that gathers with the 5th step, output comparative result; Each supply voltage data of PCBA to be measured and the 5th comparative result that goes on foot output that the 4th step was gathered are saved in system;
The 7th goes on foot, gathers each defencive function data of PCBA to be measured, and system reads each PWM of PCBA and drives signal voltage and dead band required standard value and corresponding relatively with each PWM driving signal data of PCBA to be measured of the 6th step collection, output comparative result; Each control signal data of PCBA to be measured and the 6th comparative result that goes on foot output that the 5th step was gathered are saved in system;
The 8th step, system read the standard value of each defencive function data demand of PCBA and the data of each defencive function of PCBA to be measured of gathering with the 7th step corresponding relatively, export comparative result; Each PWM driving signal data of PCBA to be measured and the 7th comparative result that goes on foot output that the 6th step was gathered are saved in system;
The 9th goes on foot, the 7th data and the 8th comparative result that goes on foot output that goes on foot each defencive function of PCBA to be measured that gathers is saved in system.
Be provided with data storage cell in described control system; The standard value that the standard value of each supply voltage required standard value of described PCBA, each control signal voltage request of PCBA, each PWM of PCBA drive signal voltage and dead band required standard value and each defencive function data demand of PCBA all is stored in the data storage cell of establishing in described control system.
The standard value that the standard value of each supply voltage required standard value of described PCBA, each control signal voltage request of PCBA, each PWM of PCBA drive signal voltage and dead band required standard value and each defencive function data demand of PCBA includes the first limit value and the second limit value, and described the second limit value is more than or equal to described the first limit value;
Wherein, when described the second limit value during greater than the first limit value;
When described comparative result was true value, test value was between the first limit value and the second limit value, and test value is up to standard; When described comparative result was falsity, test value was less than the first limit value or greater than the second limit value, and test value is not up to standard;
When described the second limit value equals the first limit value;
When described comparative result was true value, test value equaled the first limit value, and test value is up to standard; When described comparative result was falsity, test value was greater than or less than the first limit value, and test value is not up to standard.
Comprise also in described the 6th step, the 7th step and the 8th step that each control signal data, each PWM driving signal data and each defencive function data with the PCBA of described collection are retained in data storage cell.
Described data storage cell is one to be embedded in the EXCEL document in described control system.
Compared with prior art, the present invention has following advantage and beneficial effect:
1, this test macro can be realized automatic test, can reduce tester's workload, and the simple testing process of system, test duration from original a few minutes can be foreshortened to tens seconds.
2, optimized signal processing, changed existing serial process into the asynchronous parallel processing procedure, to improve treatment effeciency.
Description of drawings
Fig. 1 is test system framework figure of the present invention;
Fig. 2 is the module connecting frame figure of test macro of the present invention;
Fig. 3 is the frame diagram of signal condition module of the present invention;
Fig. 4 is the demonstration figure of the EXCEL document that embeds in control system of the present invention;
Fig. 5 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 to this.
Referring to Fig. 1-2, frequency converter PCBA test macro provided by the invention, comprise control system 1, and the scan module 2 that is connected with control system 1 respectively, DC power supplier 3, electronic load module 4, data acquisition module 5, PCBA module 7 and signal condition module 6.described control system 1, DC power supplier 3, electronic load module 4, data acquisition module 5, the power input of signal condition module 6 and scan module 2 is connected with electrical network, described DC power supplier 3 output terminals are connected with the direct-flow input end of PCBA module 7, the load input terminal of described electronic load module 4 is connected with the dc output end of PCBA module 7, described control system 1 respectively with scan module 2, DC power supplier 3, electronic load module 4, data acquisition module 5, the PCBA module connects 7, described signal condition module 6 respectively with data acquisition module 5, the PCBA module connects 7.
As shown in Figure 3, described signal condition module 6: contain switch matrix module 14, can realize the Route Selection of signal transmission channels between data acquisition module 5 and PCBA module 7; Contain signal Zoom module 15, can zoom in or out according to requiring to treat processing signals, with demand signals different between matched data acquisition module 5 and PCBA module 7; Contain signal filtering module 16, can carry out filtering according to requiring to treat processing signals, to eliminate extra undesired signal.And above-mentioned switch matrix module 14 can be a matrix switch, can be also 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).
Described PCBA module 7 is the set of power panel, control panel, keyboard and the test fixture of frequency converter.The power panel, control panel and the keyboard that need test have been placed on test fixture.When carrying out the power panel test, can be connected with keyboard power panel, then test by this test macro.When carrying out the control panel test, can be connected with keyboard control panel, then test by this test macro.
In addition, in order better to realize communication function, frequency converter PCBA test macro of the present invention also comprises the communication conversion module 8 that is connected with control system 1, and described DC power supplier 3, electronic load module 4, data acquisition module 5 and PCBA module 7 are connected with communication conversion module 8 respectively.
And can realize networking and the function of data sharing for native system, also comprise mixed-media network modules mixed-media 9, described mixed-media network modules mixed-media 9 comprises router one 0, server 11 and at least one client 12, described router one 0 is connected with control system 1, and described server 11 and client 12 are connected with router one 0 respectively.
In the present embodiment, scan module 2 is preferably scanner, DC power supplier 3 is preferably the programmable DC power supply, electronic load module 4 is preferably the programmable electronic load, data acquisition module 5 is preferably the programmable data capture card, and communication conversion module 8 turns for USB the set that serial ports, USB turn CAN.
As shown in Figure 5, A-L comprises following key step for the invention provides frequency converter PCBA method of testing:
The first step, prepare PCBA 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 the PCBA module, for the PCBA module switches on power.
The 3rd step, the test relevant information is set, and etc. to be tested, if any confirming that test carried out for the 4th step, as there do not have the test of confirmation still to continue etc. to be to be tested.
The 4th step, carry out system according to demand and open and close automatically electronic load, and gather each supply voltage data of PCBA to be measured.
The 5th step, each control signal data of collection PCBA to be measured; The corresponding comparison of each supply voltage data of PCBA to be measured that system reads each supply voltage required standard value of PCBA and gathers with the 4th step, the output comparative result.
The 6th step, each PWM of collection PCBA to be measured drive signal data; System reads the standard value of each control signal voltage request of PCBA and corresponding comparison of each control signal data of PCBA to be measured that gathers with the 5th step, output comparative result; Each supply voltage data of PCBA to be measured and the 5th comparative result that goes on foot output that the 4th step was gathered are saved in system.
The data of the 7th step, collection each defencive function of PCBA to be measured; System reads each PWM of PCBA and drives signal voltage and dead band required standard value and corresponding relatively with each PWM driving signal data of PCBA to be measured of the 6th step collection, output comparative result; Each control signal data of PCBA to be measured and the 6th comparative result that goes on foot output that the 5th step was gathered are saved in system.
The 8th step, system read the standard value of each defencive function data demand of PCBA and the data of each defencive function of PCBA to be measured of gathering with the 7th step corresponding relatively, export comparative result; Each PWM driving signal data of PCBA to be measured and the 7th comparative result that goes on foot output that the 6th step was gathered are saved in system.
The 9th goes on foot, the 7th data and the 8th comparative result that goes on foot output that goes on foot each defencive function of PCBA to be measured that gathers is saved in system.
The tenth step, end test.
In the present embodiment, above-mentioned each control signal data comprise that fan operation controls, the Control that powers on, bus brake the effective or magnitude of voltage when invalid of the control signals such as control; Above-mentioned each PWM drives the Dead Time of high voltage limit amplitude that signal data comprises three-phase 6 road pwm signals, lower bound voltage magnitude, every phase up and down bridge pwm signal; 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 1 adopts computing machine; program has been installed; and be provided with data storage cell, and the standard value of each supply voltage required standard value of PCBA, each control signal voltage request of PCBA, the standard value that each PWM of PCBA drives signal voltage and dead band required standard value and each defencive function data demand of PCBA all are stored in the data storage cell of establishing in this control system.
And this data storage cell is an EXCEL document that embeds, and the EXCEL document has comprised the standard value that needs the various test datas transferred in the step e in Fig. 5-step J.Below in conjunction with Fig. 4, signals collecting, the signal in the 4th step-Di nine step in Fig. 5 relatively being reached signal preserves and elaborates:
Signal acquisition process comprises: signal acquisition module 5 gathers the test data of each test event;
The signal comparison procedure comprises: transfer the EXCEL document in computing machine, and preserved the standard value of this test data in the EXCEL document, and standard value comprises the first limit value and the second limit value, and the first limit value and the second limit value can equate, also can not wait (namely the second limit value is greater than the first limit value); Wherein, when the second limit value during greater than the first limit value; When comparative result was true value, test value was between the first limit value and the second limit value, and test value is up to standard; When comparative result was falsity, test value was less than the first limit value or 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 was true value, test value equaled the first limit value, and test value is up to standard; When comparative result was falsity, test value was greater than or less than the first limit value, and test value is not up to standard.
signal preservation process comprises: the comparative result in the signal comparison procedure is put into the EXCEL document, with " actual value ", the form of " judged result " and " fault explanation " is preserved, the data of the actual test of storage in " actual value ", each control signal data of the PCBA that namely gathers, each PWM drives signal data, and each defencive function data, storage true value or falsity in " judged result ", i.e. " 1 " or " 0 ", and " 1 " expression test result is correct, up to standard, namely have following two kinds of situations: one is that the second limit value is during 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 " expression expression test result is incorrect, not up to standard, namely has equally two kinds of following situations: one is the second limit value during greater than the first limit value, and test value is less than the first limit value or 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.
Simultaneously, show numerical value according to above " judged result " in " fault explanation " bigger than normal or less than normal, remind intuitively the tester with this, fault where.
Owing to having embedded corresponding EXCEL document in control system 1, and when the testing standard value of different PCBA test events need to change, can edit the first limit value and the second limit value in the EXCEL document that embeds, operation is very easy.In addition, with reference to the process of step F-J in Fig. 5, because signal comparison procedure in prior art is the serial process that gathers successively, processes, preserves; And in the present invention, optimized the signal comparison procedure, be no longer the such serial process of prior art, but a kind of asynchronous parallel processing procedure, specifically collection, acquisition and processing gathers, processes and preserve such form.Can greatly improve the efficient of processing.
Above-described embodiment is the better embodiment of the present invention; but embodiments of the present invention are not restricted to the described embodiments; other any do not deviate from change, the modification done under Spirit Essence of the present invention and principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, within being included in protection scope of the present invention.
Claims (10)
1. frequency converter PCBA test macro, comprise the PCBA module, it is characterized in that, also comprise the control system that is connected with the PCBA module, and the scan module that is connected with control system respectively, DC power supplier, electronic load module, data acquisition module and signal condition module; Described DC power supplier output terminal is connected with the direct-flow input end of PCBA module, and the load input terminal of described electronic load module is connected with the dc output end of PCBA module, and described signal condition module is connected with data acquisition module, PCBA module respectively;
Described signal condition module is used for realizing the Route Selection of signal transmission channels between data acquisition module and PCBA module, treats processing signals and zooms in or out processing, and also treat processing signals and carry out the filtering processing.
2. frequency converter PCBA test macro according to claim 1, it is characterized in that, described signal condition module comprises: the switch matrix module that is used for realizing the Route Selection of signal transmission channels between data acquisition module and PCBA module, be used for treating the signal Zoom module that processing signals zooms in or out processing, be used for treating processing signals and carry out the signal filtering module that filtering is processed, described signal Zoom module and signal filtering module are arranged in the switch matrix module.
3. frequency converter PCBA test macro according to claim 2, it is characterized in that, described switch matrix module is the switch that single-pole double-throw switch (SPDT) is combined, described signal Zoom module is several resistance that are arranged in each single-pole double-throw switch (SPDT), and described signal filtering module is several electric capacity that are arranged in each single-pole double-throw switch (SPDT).
4. frequency converter PCBA test macro according to claim 1, it is characterized in that, also comprise the communication conversion module that is connected with control system, described DC power supplier, electronic load module, data acquisition module and PCBA module are connected with communication conversion module respectively.
5. frequency converter PCBA test macro 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.
6. based on the frequency converter PCBA method of testing of the described test macro of claim 1, it is characterized in that, comprise the following steps:
The first step, prepare PCBA 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 the PCBA module, for the PCBA module switches on power;
The 3rd step, the test relevant information is set, and etc. to be tested, if any confirming that test carried out for the 4th step, as there do not have the test of confirmation to continue etc. to be to be tested;
The 4th step, carry out system according to demand and open and close automatically the electronic load module, and gather each supply voltage data of PCBA to be measured;
The corresponding comparison of each supply voltage data of PCBA to be measured that the 5th step, each control signal data of collection PCBA to be measured, system read each supply voltage required standard value of PCBA and gather with the 4th step, the output comparative result;
The 6th goes on foot, gathers each PWM of PCBA to be measured drives signal data, and system reads the standard value of each control signal voltage request of PCBA and corresponding comparison of each control signal data of PCBA to be measured that gathers with the 5th step, output comparative result; Each supply voltage data of PCBA to be measured and the 5th comparative result that goes on foot output that the 4th step was gathered are saved in system;
The 7th goes on foot, gathers each defencive function data of PCBA to be measured, and system reads each PWM of PCBA and drives signal voltage and dead band required standard value and corresponding relatively with each PWM driving signal data of PCBA to be measured of the 6th step collection, output comparative result; Each control signal data of PCBA to be measured and the 6th comparative result that goes on foot output that the 5th step was gathered are saved in system;
The 8th step, system read the standard value of each defencive function data demand of PCBA and the data of each defencive function of PCBA to be measured of gathering with the 7th step corresponding relatively, export comparative result; Each PWM driving signal data of PCBA to be measured and the 7th comparative result that goes on foot output that the 6th step was gathered are saved in system;
The 9th goes on foot, the 7th data and the 8th comparative result that goes on foot output that goes on foot each defencive function of PCBA to be measured that gathers is saved in system.
7. frequency converter PCBA method of testing according to claim 6, is characterized in that, is provided with data storage cell in described control system; The standard value that the standard value of each supply voltage required standard value of described PCBA, each control signal voltage request of PCBA, each PWM of PCBA drive signal voltage and dead band required standard value and each defencive function data demand of PCBA all is stored in the data storage cell of establishing in described control system.
8. frequency converter PCBA method of testing according to claim 6, it is characterized in that, the standard value that the standard value of each supply voltage required standard value of described PCBA, each control signal voltage request of PCBA, each PWM of PCBA drive signal voltage and dead band required standard value and each defencive function data demand of PCBA includes the first limit value and the second limit value, and described the second limit value is more than or equal to described the first limit value;
Wherein, when described the second limit value during greater than the first limit value;
When described comparative result was true value, test value was between the first limit value and the second limit value, and test value is up to standard; When described comparative result was falsity, test value was less than the first limit value or greater than the second limit value, and test value is not up to standard;
When described the second limit value equals the first limit value;
When described comparative result was true value, test value equaled the first limit value, and test value is up to standard; When described comparative result was falsity, test value was greater than or less than the first limit value, and test value is not up to standard.
9. frequency converter PCBA method of testing according to claim 7; it is characterized in that, comprise also in described the 6th step, the 7th step and the 8th step that each control signal data, each PWM driving signal data and each defencive function data with the PCBA of described collection are retained in data storage cell.
10. according to claim 7 or 9 described frequency converter PCBA method of testings, is characterized in that, described data storage cell is one to be embedded in the EXCEL document in described control system.
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| CN104198921B (en) * | 2014-09-24 | 2017-01-25 | 四川泰鹏测控仪表科技有限公司 | Method for testing printed circuit boards |
| CN105738792A (en) * | 2016-02-01 | 2016-07-06 | 北京鼎汉技术股份有限公司 | PCBA test device and test method |
| CN105738739A (en) * | 2016-03-03 | 2016-07-06 | 南京南瑞继保电气有限公司 | Electric power system protective device whole machine intelligent test method and a system |
| CN108076660A (en) * | 2016-12-30 | 2018-05-25 | 深圳配天智能技术研究院有限公司 | A kind of device and method of PCBA functional tests |
| WO2018120207A1 (en) * | 2016-12-30 | 2018-07-05 | 深圳配天智能技术研究院有限公司 | Pcba functional testing device and method |
| CN107515370A (en) * | 2017-09-11 | 2017-12-26 | 欣旺达电动汽车电池有限公司 | A kind of PCBA detection means and detection method |
| CN110988648A (en) * | 2019-11-15 | 2020-04-10 | 武汉光庭科技有限公司 | PCBA automatic detection system and method |
| CN111257674A (en) * | 2020-02-20 | 2020-06-09 | 浙江禾川科技股份有限公司 | Test system of converter |
| CN111707892A (en) * | 2020-06-17 | 2020-09-25 | 扬州海科电子科技有限公司 | Test tool for 6-18GHz amplitude-phase consistent frequency conversion assembly |
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