CN201421487Y - On-line function detecting and fault removing system of circuit board - Google Patents
On-line function detecting and fault removing system of circuit board Download PDFInfo
- Publication number
- CN201421487Y CN201421487Y CN 200920057500 CN200920057500U CN201421487Y CN 201421487 Y CN201421487 Y CN 201421487Y CN 200920057500 CN200920057500 CN 200920057500 CN 200920057500 U CN200920057500 U CN 200920057500U CN 201421487 Y CN201421487 Y CN 201421487Y
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- circuit board
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- circuit
- troubleshooting
- fault removing
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Abstract
The utility model provides an on-line function detecting and fault removing system of a circuit board, which is based on a PXI platform. The on-line function detecting and fault removing system is built mainly based on the PXI platform by combining the technologies of a virtual instrument, communication, a database and the like, and is used for controlling external resources to simulate the normalworking environment of the circuit board and carrying out the functions of collecting data, analyzing numbers, storing data, providing fault removing guide and the like at the same time as simulatingthe normal working of the circuit board. The on-line function detecting and fault removing system can avoid the problems of losing maintenance experience due to staff alternation or memory blur and the like, and cannot cause unsafe incidents, expansion of fault range and the like due to faults of a tested element at the same time as carrying out function test and fault removing work on the circuit board; meanwhile, the system can also shorten the fault removing time and increase the working efficiency.
Description
Technical field
The utility model relates to online Function detection of a kind of circuit board and troubleshooting system, especially relates to a kind of based on online Function detection of circuit board and troubleshooting system on the aircraft power supply assembly controller of PXI platform.
Background technology
At present, develop rapidly along with large scale integrated circuit and VLSI (very large scale integrated circuit), the control assembly of nearly all equipment and instrument all is made up of printed circuit board (PCB), especially circuit board on the aircraft power supply assembly controller, each circuit board bearing different functional modules, and each functional module is combined the overall performance of realization equipment.In traditional circuit board on-line maintenance course of work; run into such problem through regular meeting: owing to be connected to each other together between each functional module of whole parts; many control signals, feedback signal interact in circuit board itself; often can't intuitive judgment and confirm the fault zone from the external presentation of fault; and adopt traditional troubleshooting and method for maintaining, act on very unobvious.Especially for power driving circuit, also might artificially enlarge the fault zone because the tape jam energising causes other component wear for a long time.
The utility model content
The purpose of this utility model just provides a kind of online Function detection and troubleshooting system that is mainly used in circuit board on the aircraft power supply assembly controller, and it can judge and confirm the fault zone easily, and can avoid online detection to damage other elements.
For achieving the above object, online Function detection of this circuit board and troubleshooting system comprise:
One system platform controller based on the PXI bus, interior dress operating system and proprietary application system software in order to controlling whole detection and troubleshooting process, but are provided with the storer store historical data, have both database technology and carry out expert diagnosis;
AC and DC power supply programmable power supply is used for providing power supply to the circuit-under-test plate;
The high-power AC load able to programme of AC and DC is used for providing load to the circuit-under-test plate;
Programmable function generator with function emulation and random waveform output function is used for providing the emulation function waveform to the circuit-under-test plate;
The program-controlled sensor of resistance, voltage or electric current is used to offer each functional module sensor signal;
Data acquisition equipment is used to receive test datas such as resistance, voltage or electric current;
Programmed switch and switch matrix are used for selection equipment and collection point and come acquired signal;
Adapter is used for the circuit-under-test plate is connected with controller.
Link to each other by communication interfaces such as PXI bus, GPIB, RS232, USB between all hardware devices and the controller.
Described data acquisition equipment is multimeter card or oscillograph card.
Described sensor is program control resistance box able to programme or the multi-functional integrated circuit board of DAQ with electric current and voltage output function.
Described execution switch is the high power relay plate that relay matrix plate, Digital I drive.
Beneficial effect: the quality of coming decision circuitry plate function by analog circuit board running environment, can judge and confirm the fault zone of circuit board on the aircraft power supply assembly controller easily, avoid other partial faults of integrated circuit to cause harm to circuit board, avoid simultaneously causing influence to worker's troubleshooting thinking because of complicated signals such as control, feedback load simultaneously to circuit board, constantly perfect by emulation technology and data-base content effectively solves the phenomenon that causes service experience to lose because of staff redeployment or memory limitation.The equipment means of science can effectively be saved human cost, enhance productivity simultaneously.
Description of drawings
Below in conjunction with drawings and Examples the utility model test macro is further specified.
Fig. 1 is the test principle figure of the utility model test macro;
Fig. 2 is a system construction drawing;
Fig. 3 is the system software process flow diagram.
Embodiment
In order to overcome the limitation of troubleshooting thinking and method on the traditional circuit-board function, adopt separate type troubleshooting thinking, carry out function by circuit board and divide, adopt the external environment condition of external resource analog circuit board operate as normal, whether function is normal in order to the decision circuitry plate with test in online detection constantly.Before the side circuit energising, carry out circuit simulation simultaneously, to help running smooth of troubleshooting work.This utility model only needs historgraphic data recording one time, store the data in the middle of the system database, later in maintenance process, utilize the contrast of detected waveform or data and historical data, adopt expert system to guide for operator's maintenance job, shorten the troubleshooting time, finish test and maintenance task safely, efficiently.After each work, the worker can also be with the new experience of oneself, and new knowledge is supplemented to this system again, and the accumulation that keeps experience is in use further improved this system in continuity.
Online Function detection of this circuit board and troubleshooting system comprise:
One system platform controller based on the PXI bus, interior dress operating system and proprietary application system software in order to controlling whole detection and troubleshooting process, but are provided with the storer store historical data, have both database technology and carry out expert diagnosis; Adopt the PXI platform of America NI company, PXI (PCI eXtensions for Instrumentation is towards the PCI expansion of instrument system) is a kind of firm measurement and robotization platform based on PC.PXI combines the characteristic of soundness, modularization and the Eurocard mechanical encapsulation of the electric bus characteristic of PCI and CompactPCI, and has increased special synchronous bus and main software characteristic.This becomes it and measures and the high-performance of automated system, low-cost carrying platform.Be equipped with the PXI embedded controller simultaneously, it has common PC Peripheral Interface, as keyboard/mouse and monitor, and hard disk, USB, Ethernet, RS232, interface and other Standard PC peripheral hardwares such as GPIB.The utility model adopts Windows XP operating system.
The proprietary application system software is mainly used the Labview software platform of NI company, this software platform adopts the visual picture programming mode, the graphic programmed method of Graphics Application data stream programming language and process block, the flow process of natural terrain registration certificate very, and intuitively user interface controls is mapped on the data, have objective interface, easy to operate, characteristics such as it is simple to programme.The LabVIEW programming language that characteristic is complete and traditional programming language have same structure: variable, data type, object, circulation, sequential organization and error correction.In addition, use LabVIEW, can call existing code resources such as dynamic link library or shared library file, and with the integrated use of software of using ActiveX, TCP and other standard techniques.Native system is realized a cover collector plate Function detection in conjunction with Teststand, CVI, database and emulation technology, wave form analysis, and data recording, expert diagnosis is the online troubleshooting system of one.
AC and DC power supply programmable power supply is used for providing power supply to the circuit-under-test plate; Direct supply adopts 2 road high power DC programmable power supplys.Specifically be the DLM40-15 model power supply that adopts SORENSEN company, GPIB control, it has the remote voltage inducing function; Constant voltage, constant current operation pattern automatically switch; But serial or parallel connection uses; Built-in temperature too high with function such as voltage overload protection; AC power adopts 3 phase 115Vac 400Hz regulated power supplies.The utility model adopts 3 phase intermediate frequency electricity to add the adjustable high-power transformer of three-phase and realizes.
The high-power AC load able to programme of AC and DC is used for providing load to the circuit-under-test plate; AC load adopts high-power AC load able to programme, have operator schemes such as constant voltage, constant current, permanent power, constant-impedance, and power factor (PF) is positive and negative adjustable, promptly has both adjustable capacitive load and inductive load function simultaneously.The concrete 3091LD type product that adopts CaliforniaInstruments, its products characteristics is: simple to operate.Can directly load the certain loads condition; Have autorun, can use IEEE-488 or RS232C program control; Having industrial standard SCPI (programmable instrument stereotyped command) agreement and instrument drives; Built-in function of measuring; Power grade is 3000W; Have steady current/firm power/constant impedance/constant voltage/operator schemes such as short circuit.
DC load adopts high-power DC load able to programme, has constant current, constant-resistance operator scheme, and load current is adjustable, and resistance is adjustable, working stability, and thermal diffusivity is good.Specifically adopt from standard resistance control type DC load case, this DC load case adopts remote switch control, adopts the current feedback automatic control mode during constant current control, opens the light by programmed control is long-range, guarantees current constant; Adopt open loop control mode during constant-resistance control, directly drive remote switch resistance by program.
Signal source is the programmable function generator with function emulation and random waveform output function, is used for providing the emulation function waveform to the circuit-under-test plate; The concrete PXI-5412 type AWG (Arbitrary Waveform Generator) integrated circuit board that adopts NI company.It is synchronous that this integrated circuit board has multimode, the distortion of＜20ps, and the 20MHz analog bandwidth, 14 bit resolutions, the 100MS/s sampling rate, the shared Wave data of 512MB and sequence indication internal memory have the function generator simulation model.
The program-controlled sensor of resistance, voltage or electric current is used to offer each functional module sensor signal; Sensor should have resistance, voltage, the current type way of output, and minimum precision 0.1 Ω of program-controlled adjusting or 0.1V.The utility model is for adopting the able to programme program control resistance box of IETLABS company, the multi-functional integrated circuit board of DAQ that PRS-200 series and NI have the electric current and voltage output function.This resistance box has the multi-functional control pattern, comprises thumbwheel switch, IEEE-488.1, IEE-488.2, RS232C etc., and " open circuit " able to programme reaches " short circuit " state options, and 0.1 Ω-99M Ω is adjustable arbitrarily, and 9 bit digital show; This DAQ jig has+-10V, 16, multichannel analog output.
Data acquisition equipment is used to receive test datas such as resistance, voltage or electric current, has synchronous acquisition and multichannel collecting and high sampling rate waveform acquisition function.The utility model adopts 2 PXI-4070 DMM multimeter cards and binary channels PXI-5114 OSC oscillograph card.DMM multimeter jig has 10 or 23 variable-resolutions, 6 half precision, high voltage waveform acquisition.It is the real-time sampling speed of 250MS/s that OSC oscillograph jig has speed, 125MHz bandwidth, but synchronized sampling binary channels, and the 8M plate carries internal memory, can carry out edge, form, stagnant ring, video (comprising HDTV) and numeral and trigger, and 40mV is to the 40V input range.The multiplexed card of MUX that cooperates the SCXI-1127 of NI company oneself can carry out the circle collection of maximum 32 paths, solves TPS problem in enormous quantities.
Programmed switch and switch matrix are used for selection equipment and collection point and come acquired signal, as the power device switching control mechanism, not only should be able to carry big electric current and voltage for a long time, also have remote control function.The utility model adopts Digital I to drive the high power relay plate and realizes that IO passage and relay adopt isolation method to strengthen security performance.Carrying out switch, should to have quantity huge, program control convenience, characteristics such as actuation time is short.The utility model adopts the SCXI-1166 relay board of NI company, and this plate has 32 independently single-pole double-throw (SPDT) unlatching electromechanical relays, 115 cycle per seconds, and it is 300VDC/300VAC that electric shock can be born ceiling voltage, 2A switching/5A transmits, available software programming fully.Carrying out switch, should to have quantity huge, program control convenience, characteristics such as actuation time is short.
Adapter is used for the circuit-under-test plate is connected with controller.
Link to each other by communication interfaces such as PXI bus, GPIB, RS232, USB between all hardware devices and the controller, data acquisition equipment is multimeter card or oscillograph card, and sensor is program control resistance box able to programme or the multi-functional integrated circuit board of DAQ with electric current and voltage output function.
Fig. 1 is that the total system schematic diagram is with the block diagram formal specification, round circuit board under test, signals such as power supply, load, control signal, feedback signal, sensor are provided to it, adopt DMM multimeter card and OSC oscillograph card collecting test data simultaneously, PXI controller (CPU) is responsible for the record and the wave form analysis of data, uses expert's control mode to output test result and the operation guide to operator interface therewith simultaneously.
Fig. 2 is illustrated in the mode of system construction drawing, the PXI cabinet is as the system core, integrated DMM digital multimeter on the PXI bus, OSC digital oscilloscope, FGEN AWG (Arbitrary Waveform Generator), and the integrated circuit boards such as DAQ multifunctional data acquisition card of function such as integrated AI/AO/DI/DO; The expansion slot of PXI cabinet is integrated relay board and the multiplexed plate of MUX of SCXI; Integrated RS232 interface, gpib interface and other common PC Peripheral Interfaces above the PXI controller, as keyboard/mouse and monitor, and hard disk, Standard PC peripheral hardwares such as USB 2.0 interfaces.
Use native system as follows to the method step of online Function detection of circuit board and troubleshooting system:
The circuit-under-test plate is divided each functional module by its function, the correlative measurement pilot signalization collection point after each functional module;
Resources such as power supply and load are provided to the circuit-under-test plate;
Function generator adds function signals such as various analog sensors, analog feedback to the circuit-under-test plate;
Controller guides capture card to select each acquisition channel to gather measured signal, record data and waveform and demonstration by the matrix switch element;
The historical data of corresponding collection point compares and analyzes on this circuit-under-test plate that the signal that controller will come from each acquisition channel collection and store memory store up;
If find the wrong expert diagnostic system that then calls the store memory storage, the diagnosis back provides maintenance to guide to the operator after comparative analysis;
Manually get rid of each and the incongruent functional fault of historical normal data successively with reference to guiding, be excluded until all faults.
Principle of work: at first circuit board to be tested is separated from the upper level unit under test.The external power source joint is introduced the power interface of circuit board, is generally DC12V, DC24V or ± different electrical power signals such as 7.5Vdc, this power supply signal provides by programmable power supply.If circuit board to be tested needs the signal such as other sensors just can operate as normal, then offer the corresponding signal of circuit board to be tested, to guarantee the working environment of simulation circuit board to be tested in the upper level unit under test by the sensor die analog signal.External resource is loaded into after the circuit board to be tested, the circuit board of this moment can be operated under the open loop mode of operation, but also can't detect carrying load ability and other execution functions of circuit board this moment, so the output terminal and the programmable load of circuit board to be tested are linked, regulating load comes the topworks of analog circuit board in the upper level unit under test to check the carrying load ability of circuit board this moment, and the carrying load ability of circuit board is an important indicator of checking circuit plate function.Generally speaking after the work of circuit board bringing onto load, the power of elements on circuit board consumption can be significantly increased, the output power of power supply also can correspondingly increase, for the holding circuit plate is operated under the stable closed loop mode of operation, must introduce feedback element, utilize this moment the random waveform function generator come analog circuit board under upper level unit under test load condition feedback signal and input on the circuit board corresponding feedback input interface, although the circuit board under energising situation this moment has broken away from it and has been installed in working environment in the upper level parts so, but can simulate it fully and be installed in mode of operation in the upper level parts, the interference that can not be subjected to other function module circuit plates like this with influence, judge the quality of this circuit board function separately, come the isolated fault circuit board by this mode.
So how to judge the quality of a circuit board function to be tested, just need be in the external environment condition of analog circuit board operate as normal, circuit board is operated under the closed loop mode of operation, characteristic test point on the circuit board and output are carried out data collection task with equipment such as multimeter, oscillographs, the data and the waveform that collect are carried out wave form analysis, after the expert system diagnosis, show diagnostic result, decision circuitry plate function quality or locking fault zone or fault element.
Claims (5)
1, online Function detection of a kind of circuit board and troubleshooting system is characterized in that comprising:
One system platform controller based on the PXI bus, interior dress operating system and proprietary application system software in order to controlling whole detection and troubleshooting process, but are provided with the storer store historical data, have both database technology and carry out expert diagnosis;
AC and DC power supply programmable power supply is used for providing power supply to the circuit-under-test plate;
The high-power programmable load of AC and DC is used for providing load to the circuit-under-test plate;
Programmable function generator with function emulation and random waveform output function is used for providing the emulation function waveform to the circuit-under-test plate;
The program-controlled sensor of resistance, voltage or electric current is used to offer each functional module sensor signal;
Data acquisition equipment is used to receive test datas such as resistance, voltage or electric current;
Programmed switch and switch matrix are used for selection equipment and collection point and come acquired signal;
Adapter is used for the circuit-under-test plate is connected with controller.
2, online Function detection of circuit board according to claim 1 and troubleshooting system is characterized in that: link to each other by communication interfaces such as PXI bus, GPIB, RS232, USB between all hardware devices and the controller.
3, online Function detection of circuit board according to claim 2 and troubleshooting system is characterized in that: described data acquisition equipment is multimeter card or oscillograph card.
4, online Function detection of circuit board according to claim 3 and troubleshooting system is characterized in that: described sensor is program control resistance box able to programme or the multi-functional integrated circuit board of DAQ with electric current and voltage output function.
5, online Function detection of circuit board according to claim 4 and troubleshooting system is characterized in that: described execution switch is the high power relay plate that relay matrix plate, Digital I drive.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920057500 CN201421487Y (en) | 2009-05-31 | 2009-05-31 | On-line function detecting and fault removing system of circuit board |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920057500 CN201421487Y (en) | 2009-05-31 | 2009-05-31 | On-line function detecting and fault removing system of circuit board |
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| CN201421487Y true CN201421487Y (en) | 2010-03-10 |
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| CN 200920057500 Expired - Lifetime CN201421487Y (en) | 2009-05-31 | 2009-05-31 | On-line function detecting and fault removing system of circuit board |
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| CN101806869A (en) * | 2010-03-22 | 2010-08-18 | 株洲南车时代电气股份有限公司 | General-purpose automatic test system for locomotive switching power supply and method thereof |
| CN101968522A (en) * | 2010-08-27 | 2011-02-09 | 杭州远方光电信息股份有限公司 | Electrical property measuring apparatus |
| CN102230955A (en) * | 2011-06-24 | 2011-11-02 | 株洲南车时代电气股份有限公司 | Dynamic ageing monitoring system and method for switch mode power supply of locomotive |
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| CN104297673A (en) * | 2014-11-14 | 2015-01-21 | 镇江华印电路板有限公司 | Circuit board fault detector |
| CN104316863A (en) * | 2014-10-30 | 2015-01-28 | 天津津伯仪表技术有限公司 | Artificial intelligence-based universal circuit debugging and troubleshooting interaction system and method |
| CN104502743A (en) * | 2014-11-28 | 2015-04-08 | 惠州市亿能电子有限公司 | Automatic testing system and method for power management product based on Labview |
| CN104614668A (en) * | 2015-02-27 | 2015-05-13 | 北京精密机电控制设备研究所 | Circuit board testing system |
| CN105203897A (en) * | 2014-06-23 | 2015-12-30 | 展讯通信（上海）有限公司 | Method for detecting short-circuited device on circuit board |
| CN105911453A (en) * | 2016-04-15 | 2016-08-31 | 南京工程学院 | Virtual-instrument-technology-based general circuit debugging system and method |
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| CN106324488A (en) * | 2016-11-23 | 2017-01-11 | 沈阳航天新光集团有限公司 | Testing system on assembly of printed-circuit board of automation equipment |
| CN106405366A (en) * | 2015-07-31 | 2017-02-15 | 王健男 | Computer aided system and method for electronic product development and maintenance |
| CN108459263A (en) * | 2018-03-13 | 2018-08-28 | 成都西南交大机电设备有限公司 | System type inverter board testing stand |
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| CN112734058A (en) * | 2020-12-29 | 2021-04-30 | 中国航空工业集团公司西安飞机设计研究所 | Troubleshooting analysis method for aircraft system |
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- 2009-05-31 CN CN 200920057500 patent/CN201421487Y/en not_active Expired - Lifetime
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| CN101968522A (en) * | 2010-08-27 | 2011-02-09 | 杭州远方光电信息股份有限公司 | Electrical property measuring apparatus |
| CN101968522B (en) * | 2010-08-27 | 2013-07-17 | 杭州远方光电信息股份有限公司 | Electrical property measuring apparatus |
| CN102411098A (en) * | 2010-09-21 | 2012-04-11 | 上海广联电子有限公司 | Substrate testing system and method |
| CN102266626B (en) * | 2010-12-31 | 2014-02-26 | 北京谊安医疗系统股份有限公司 | Method and device for detecting air source pressure status of anesthesia machine |
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| CN102230955A (en) * | 2011-06-24 | 2011-11-02 | 株洲南车时代电气股份有限公司 | Dynamic ageing monitoring system and method for switch mode power supply of locomotive |
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| CN104297673A (en) * | 2014-11-14 | 2015-01-21 | 镇江华印电路板有限公司 | Circuit board fault detector |
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| CN106324330A (en) * | 2015-07-06 | 2017-01-11 | 兰州工业学院 | Parameter measuring system and method of analog circuit |
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| CN105911453A (en) * | 2016-04-15 | 2016-08-31 | 南京工程学院 | Virtual-instrument-technology-based general circuit debugging system and method |
| CN105911453B (en) * | 2016-04-15 | 2019-03-22 | 南京工程学院 | Universal circuit debugging system and method based on virtual instrument technology |
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| CN108459263A (en) * | 2018-03-13 | 2018-08-28 | 成都西南交大机电设备有限公司 | System type inverter board testing stand |
| CN111366836A (en) * | 2020-02-25 | 2020-07-03 | 上海机电工程研究所 | Safety protection circuit device suitable for test power-up of PCB (printed circuit board) maintenance test equipment |
| CN112734058A (en) * | 2020-12-29 | 2021-04-30 | 中国航空工业集团公司西安飞机设计研究所 | Troubleshooting analysis method for aircraft system |
| CN112734058B (en) * | 2020-12-29 | 2023-07-25 | 中国航空工业集团公司西安飞机设计研究所 | Failure analysis method of aircraft system |
| CN113031563A (en) * | 2021-03-05 | 2021-06-25 | 展讯通信（上海）有限公司 | Fault detection system and method |
| CN113495208A (en) * | 2021-06-10 | 2021-10-12 | 广州亚美信息科技有限公司 | Power circuit testing device, system and method for mounting circuit board |
| CN113495208B (en) * | 2021-06-10 | 2023-12-26 | 广州亚美信息科技有限公司 | Device, system and method for testing power supply circuit of packaged circuit board |
| CN113791298A (en) * | 2021-10-09 | 2021-12-14 | 中国北方车辆研究所 | Detection device for reliability test of power supply and distribution products |
| CN113791298B (en) * | 2021-10-09 | 2023-07-28 | 中国北方车辆研究所 | Detection device for reliability test of power supply and distribution products |
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