CN2706771Y - Automatic tester for circuitboard - Google Patents
Automatic tester for circuitboard Download PDFInfo
- Publication number
- CN2706771Y CN2706771Y CN 200320132089 CN200320132089U CN2706771Y CN 2706771 Y CN2706771 Y CN 2706771Y CN 200320132089 CN200320132089 CN 200320132089 CN 200320132089 U CN200320132089 U CN 200320132089U CN 2706771 Y CN2706771 Y CN 2706771Y
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- 238000004891 communication Methods 0.000 claims abstract description 18
- 238000004458 analytical method Methods 0.000 claims abstract description 10
- 238000012360 testing method Methods 0.000 claims description 102
- 230000006870 function Effects 0.000 claims description 19
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000003467 diminishing effect Effects 0.000 abstract 1
- 230000002349 favourable effect Effects 0.000 abstract 1
- 238000005259 measurement Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000006698 induction Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 230000036962 time dependent Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000013101 initial test Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012956 testing procedure Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model discloses an automatic tester for a circuit board, comprising an automatic tester for a circuit board, an external connecting device of a circuit board automatic tester and a computer. The automatic tester for a circuit board comprises a master control board, a communication channel board and a function generator board. The automatic tester for a circuit board also comprises a wave shaped analysis device which displays the time history plot of the measured value according to the measured value. The automatic tester for a circuit board of the utility model can measure the electric appliance component in the circuit board fast, accurately and in time, and visually displays the time history curve of the measured value by the wave shaped analysis device. Therefore, operators can find the appropriate time delay according to the curve in order to be favourable for accurately measuring the labile measured component, diminishing erroneous judgment, and raising production efficiency.
Description
Technical field
The utility model relates to a kind of circuit board automatic testing equipment, relates in particular to a kind of Waveform display apparatus that has, thereby can show the circuit board automatic testing equipment of suitable time-delay.
Background technology
Circuit board is finished after the welding at the assembling electronic component, must test it.To the test mode of circuit board, be use device or signal generator in the prior art, export the test point of predefined signal source, test again and again by the site operation personnel to circuit board, and the different test point of conversion successively.Carry out every test job so again and again, not only need to expend great amount of manpower and test duration, simultaneously numerous and diverse content measurement, operation by personnel is easy to occur various operational mistakes, not only be difficult to reach the requirement of test job, but also can cause the delay of test job inevitably.
In addition, this must have the measured value of enough time-delay assemblies to stablize in some assembly itself or unstable because of the influence that is subjected to circuit.Its required time-delay is attached thereto the capacitance and the induction coefficient that connect by survey assembly or other and decides.In the test process of automatic testing equipment, test the assembly one by one in the circuit board, the time, The faster the better, and therefore, time-delay is corresponding for the test duration of entire circuit plate.Then can cause the production time to prolong if exceed Time delay measurement, reduce production efficiency, if delay time is not enough, measured value instability then.In order to find suitable time-delay, test repeatedly with different time-delays with regard to needing operating personnel, till finding stable reading, but this method also can increase the test duration, and increases the weight of operating personnel's work load.
The content of utility model
One of them purpose of the present utility model just provides a kind of circuit board Auto-Test System; this Auto-Test System is used for the components values of metering circuit plate; the test operation personnel the test before according to the MUT module under test setup parameter; and utilize preset program to test; such as the assembly resistance in the circuit board of reading the wiring board that assembles; capacitance; inductance; and transistor; diode; Zener diode; FET; induction tube is imitated in the field; the value of the protection diode of photocoupler and IC; so that compare with the ideal value of the assembly that configures, determine its whether within range of allowable error to determine the quality of MUT module under test.
The further purpose of the utility model provides a kind of circuit board automatic testing equipment with wave form analysis device, so that allow the operating personnel be corresponding appropriate time-delay with it that specific components finds.Utilize this waveform testing device that unsettled assembly is further detected, so that find exactly and the corresponding only time-delay of described survey assembly.
The purpose of this utility model is realized by following technical scheme:
The utility model provides a kind of circuit board Auto-Test System, this system comprises the circuit board automatic testing equipment, circuit board auto testing instrument external device and computing machine, described circuit board automatic testing equipment comprises master control board, channel board and function generator plate, wherein, the running of master control board control function generator plate and channel board, function generator plate is mainly controlled measured channel, the channel that channel board mainly provides various test functions switches connection, circuit board auto testing instrument external device is connected to described circuit board automatic testing equipment, comprises power supply, option board, needle-bar, the pressure head control panel, serial communication apparatus, computing machine and input-output apparatus thereof, external instrument.Wherein power supply provides necessary operating voltage or electric current for tested circuit board; Option board provides and select a function of testing from a plurality of tested circuit board; Needle-bar is used for fixing tested circuit board and tested circuit board is connected with relevant apparatus; The knee-action of pressure head control panel control pressure head finger plate (not shown) also detects the beginning test signal; Serial communication apparatus provides level match conversion and can communicate with external unit, option board between computing machine and tested circuit board, computing machine comprises the PCI numeral I/O card that is used for option board is provided with, the serial communication interface that communicates with serial communication apparatus, the PCI GPIB card that is connected with external instrument, and the ISA communication card that communicates of pressure head control panel.
Further, the circuit board automatic testing equipment can also comprise that a wave form analysis device is connected with channel board, and is connected with the display device of computing machine, is used for unsettled assembly is further analyzed, and shows.
According to circuit board automatic testing equipment of the present utility model and wave analyzing device, can be rapidly and accurately in time to the measurement of electric appliance component in the circuit board, and, utilize the wave form analysis device can show measured value curve over time intuitively, operating personnel are that MUT module under test finds suitable time-delay according to this curve, thereby help accurately measuring unsettled MUT module under test, and enhance productivity.
Description of drawings
Fig. 1 is the structure calcspar of the utility model circuit board auto testing instrument with its foreign nationality's device;
Fig. 2 is the test cell fundamental diagram of the utility model circuit board auto testing instrument;
Fig. 3 is the flow chart of the required time-delay of the utility model test MUT module under test
Fig. 4 is the result according to waveform analyzer of the present utility model, is presented at the time dependent curve of electric capacity both end voltage on the display;
Fig. 5 is the circuit diagram of big electric capacity being tested according to method of the present utility model;
Voltage curve over time when Fig. 6 is shown in Figure 5 big electric capacity charging;
Fig. 7 is the fast sketch in structure side of the utility model circuit board automatic testing equipment.
Embodiment
Fig. 1 is the structure calcspar of the utility model circuit board auto testing instrument and external device thereof.As shown in Figure 1, circuit board auto testing instrument of the present utility model comprises: master control board (mainboard), channel board (scanner board) and function generator plate (functional board).
Wherein digital waveform is directly synthesized in master control board, as producing the sine wave that can compile frequency 1-64KHz or 1-500KHz; The running of control function generator plate and channel board; Digital and analogue signals conversion is provided, is used for testing capacitor, electric capacity parallel resistance, inductance etc.
Function generator plate is mainly controlled measured channel, and comprises direct supply output, and directly power supply is used for powering up the function of dynamic test Board Under Test to the measured piece on the needle bed fixture, and its frequency test scope can be by DC-13MHz.Provide in addition such as measured values such as the counting of electric current, frequency and timing, time, pulsewidths, and functions such as temperature sensor, buzzer siren, LED alarm are provided.
The channel that channel board mainly provides various test functions switches connection.
When automatic measure of learning capacitance, ICT (on-line testing instrument) can utilize ideal frequency of directly synthetic digital waveform generator generation, learns and tests, and also can manually adapt frequency.
This circuit board auto testing instrument external device has power supply (Power Souce), option board (matrixboard), test needle-bar (Fixture), pressure head control panel (Press Controller Board), serial communication apparatus (RS232 Comm.Bd), computing machine (PC) and input-output apparatus (I/O Devices) thereof, external instrument (External Instrument).Wherein power supply provides necessary operating voltage or electric current for tested circuit board; Option board provides and select a function of testing from a plurality of tested circuit board; Needle-bar is used for fixing tested circuit board and tested circuit board is connected with relevant apparatus; The knee-action of pressure head control panel control pressure head finger plate (not shown) also detects the beginning test signal; Serial communication apparatus provides the level match conversion and can communicate with external unit, option board between computing machine and tested circuit board; Computing machine comprises the PCI numeral I/O card that is used for option board is provided with, the serial communication interface that communicates with serial communication apparatus, the PCI GPIB card that is connected with external instrument, and the ISA communication card that communicates of pressure head control panel; The external input-output apparatus of computing machine comprises keyboard, mouse, display, printer etc.; The external instrument of circuit board auto testing instrument of the present utility model mainly contains necessary direct supply, AC power, oscillograph, audio analyzer, electronic load, noise ripple table etc.
Fig. 2 is the test cell fundamental diagram of the utility model circuit board auto testing instrument.The electric signal that interface bus sends master control board sends to measuring unit by interface, wherein measuring unit comprises amplifier and D/A converter, the electric signal that sends from master control board transfers to the test needle-bar through D/A converter and channel board, the test needle-bar links to each other with special test circuit, the special test circuit of MUT module under test on the described electric signal control test needle-bar, progressively the special test circuit energising of each MUT module under test is measured according to predefined testing procedure, the measured value of MUT module under test is after processing and amplifying, through D/A converter, interface circuit and interface bus are sent in the computing machine, by display measurement result are shown then.
Below with reference to Fig. 3 the method for testing of the utility model to assembly is elaborated.The first step, the input parameter step, test parameter by input equipment input MUT module under test, these parameters comprise type, method of testing, range of allowable error of MUT module under test etc., in second step, the initial testing step determines according to above-mentioned parameter whether measurement result is stable, if measurement result is stable, then finish test program; If measurement result instability, determine whether to utilize wave form analysis step debug test program, as using, execution analysis step display then, promptly read the electric current and voltage value of flowing through component at a certain time interval in real time, be presented on the display, offer operating personnel according to the measured value time history plot of these readings with MUT module under test, if not, then estimate a time delay by operating personnel.In embodiment of the present utility model, as shown in Figure 4, transverse axis is a time shaft, the longitudinal axis is represented the measurement result of certain time point magnitude of voltage, each time on the time shaft and correspondent voltage curve map thereof all are shown to operating personnel in real time, and operating personnel can directly read necessary time delay according to squiggle.
Fig. 4 has carried out after the method flow diagram shown in Figure 3, offer operating personnel's the time dependent curve of electric capacity both end voltage via the waveform analyzer test, those of ordinary skill in the art is easy to obtain appropriate time-delay according to this display result, in embodiment of the present utility model, as shown in Figure 4, this appropriate delay time is t.
Those of ordinary skill in the art should understand, not all MUT module under test all will utilize waveform analyzer, because this can prolong the test program time, as mentioned above, the MUT module under test that only those meetings that can't isolate is subjected to labile factor influence such as environmental capacitance inductance carries out wave form analysis, thereby saves the test duration.
Fig. 5 and Fig. 6 show circuit diagram that big electric capacity is tested respectively and voltage curve over time when should big electric capacity charging.
The course of work of following index map 7 explanation the utility model circuit board automatic testing equipments: after the start, device is adjusted to the automatic test program state of assembly, then, the circuit-under-test plate is installed on the test needle-bar, and the related data of collection MUT module under test, comprise the MUT module under test nominal value, assembly is residing pin number (assembly is connected to the pin number of ICT by needle-bar) on the test needle-bar, whether need to isolate, the position of assembly on circuit board, the error range of MUT module under test etc., the operator is input to computing machine with the related data of MUT module under test, learn by oneself button and just from tested assembly, acquire online relatively standard value when pressing, the parameter of importing during for test resistance as following table:
| Step | The T component type | The Device component Name | The Ideal ideal value | The CH+ noble potential | The CH-electronegative potential | G1 isolating points 1 | G2 isolating points 2 | The Gon isolation | The LC orientation | The STD standard value | The T+ positive error | The T_ negative error | Measured value | ％ |
| 1 | R | R1 | 1K | 1 | 2 | 19 | Y (being) | A1 | 1.02 | 10 | 10 |
The pin that connects by needle-bar according to assembly number, corresponding with the respective channel in the letter channel board, the channel that channel board mainly provides various test functions switches and connects, and is connected with special measurement circuit thus.Press testing button, central processing unit (CPU) sends instruction according to predefined method of testing operation steps, and some MUT module under tests are tested, and test data shows in measured value one hurdle soon.
Though be illustrated with reference to embodiment, but obviously in design scope of the present utility model, can also make multiple improvement to those skilled in the art, though with reference to various smart cards embodiment is illustrated, the utility model is not limited to this card.Should be appreciated that various modifications, replacement in not breaking away from the utility model instructions scope of disclosure all are included in claims.
Claims (2)
1, a kind of circuit board automatic testing equipment comprises the circuit board auto testing instrument, and coupled external device and computing machine, it is characterized in that:
The circuit board auto testing instrument comprises master control board, channel board and function generator plate, and channel board and function generator plate all link to each other with master control board, wherein,
Channel board is used to provide the channel of various test functions to switch connection,
Function generator plate is used for measured channel is controlled,
Master control board is used for the running of control function generator plate and channel board;
External device comprises power supply, option board, needle-bar, pressure head control panel, serial communication apparatus, computing machine and input-output apparatus thereof, external instrument, wherein,
Power supply is used to tested circuit board that necessary operating voltage or electric current is provided,
Option board is used for providing from a plurality of tested circuit boards and selects a function of testing,
Needle-bar is used for fixing tested circuit board and tested circuit board is connected with relevant apparatus,
The pressure head control panel is used to control the knee-action of pressure head finger plate and detects the beginning test signal,
Serial communication apparatus is used for providing between computing machine and tested circuit board level match to change and communicate with external unit, option board;
Computing machine comprises PCI numeral I/O card, serial communication interface, PCI GPIB card, ISA communication card, wherein,
PCI numeral I/O card is used for option board is provided with,
Serial communication interface is used for communicating with serial communication apparatus,
PCI GPIB card is used for being connected with external instrument,
The ISA communication card is used for communicating with the pressure head control panel.
2, a kind of circuit board automatic testing equipment as claimed in claim 1, circuit board auto testing instrument wherein comprises that also one is read some measured values of MUT module under test and shows measured value time history plot wave form analysis device according to these measured values by channel board in real time as required, and this wave form analysis device links to each other with computer display apparatus with channel board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320132089 CN2706771Y (en) | 2003-12-31 | 2003-12-31 | Automatic tester for circuitboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320132089 CN2706771Y (en) | 2003-12-31 | 2003-12-31 | Automatic tester for circuitboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2706771Y true CN2706771Y (en) | 2005-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320132089 Expired - Fee Related CN2706771Y (en) | 2003-12-31 | 2003-12-31 | Automatic tester for circuitboard |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101221210B (en) * | 2007-11-30 | 2010-05-19 | 华南理工大学 | Automatic testing and emendation system and method for finished circuit board |
| CN101561471B (en) * | 2009-05-27 | 2011-02-16 | 陈建海 | Vehicle instrument circuit board combined detection table and detection method thereof |
| CN101226222B (en) * | 2008-02-02 | 2013-03-20 | 上海盈龙电子科技有限公司 | PCB multifunctional test system and implementing method |
| CN104698359A (en) * | 2013-12-10 | 2015-06-10 | 全智科技股份有限公司 | High-performance test platform equipment |
| CN105445652A (en) * | 2015-12-24 | 2016-03-30 | 北京航天测控技术有限公司 | Lissajous figure-based circuit board off-line comparison test device and method |
| CN110687436A (en) * | 2019-11-08 | 2020-01-14 | 深圳市诺威达电汽有限公司 | Automatic circuit board function testing device and method |
-
2003
- 2003-12-31 CN CN 200320132089 patent/CN2706771Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101221210B (en) * | 2007-11-30 | 2010-05-19 | 华南理工大学 | Automatic testing and emendation system and method for finished circuit board |
| CN101226222B (en) * | 2008-02-02 | 2013-03-20 | 上海盈龙电子科技有限公司 | PCB multifunctional test system and implementing method |
| CN101561471B (en) * | 2009-05-27 | 2011-02-16 | 陈建海 | Vehicle instrument circuit board combined detection table and detection method thereof |
| CN104698359A (en) * | 2013-12-10 | 2015-06-10 | 全智科技股份有限公司 | High-performance test platform equipment |
| CN105445652A (en) * | 2015-12-24 | 2016-03-30 | 北京航天测控技术有限公司 | Lissajous figure-based circuit board off-line comparison test device and method |
| CN105445652B (en) * | 2015-12-24 | 2018-05-04 | 北京航天测控技术有限公司 | A kind of offline contrast test device and method of circuit board based on lissajouf figure |
| CN110687436A (en) * | 2019-11-08 | 2020-01-14 | 深圳市诺威达电汽有限公司 | Automatic circuit board function testing device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHENZHEN ZHENHUA TEST EQUIPMENT CO., LTD. Free format text: FORMER OWNER: LI RISHENG Effective date: 20081121 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20081121 Address after: Shenzhen, Guangdong Province, Baoan District, Shenzhen road, fly wing, building on the west side of the 3 floor, zip code: 518000 Patentee after: SHENZHEN CITY ZHENHUA TEST EQUIPMENT CO., LTD. Address before: Room 1110, Wantong building, Sungang East Road, Luohu District, Guangdong, Shenzhen province 518023 Patentee before: Li Risheng |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050629 Termination date: 20121231 |