CN103149526B - PCBA board test macro and method - Google Patents
PCBA board test macro and method Download PDFInfo
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- CN103149526B CN103149526B CN201110403015.9A CN201110403015A CN103149526B CN 103149526 B CN103149526 B CN 103149526B CN 201110403015 A CN201110403015 A CN 201110403015A CN 103149526 B CN103149526 B CN 103149526B
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Abstract
The invention provides a kind of PCBA board test macro, comprise control end and test fixture, described test fixture comprises test cell, burning unit and connecting circuit, the test pin of wherein said connecting circuit connection PCB A plate and burning pin, described control end comprises burning control module and unit of testing and controlling, and burning control module carries out burning program for controlling described burning unit to the programmable chip in PCBA board; Unit of testing and controlling is tested for controlling test cell each functional circuit to PCBA board, calls burning control module simultaneously and carries out burning control, and the chip control circuit of the programmable chip completed burning and PCBA board is tested.The present invention also provides a kind of method of testing of correspondence.The present invention, by burning program is embedded automatic testing process, makes functional circuit test process and burning course synchronization carry out, has not only saved test fixture, and improve efficiency.
Description
Technical field
The present invention relates to burning chip and field tests, more particularly, relate to a kind of PCBA board test macro and method.
Background technology
Along with the fast development of electronics industry robotization, a large amount of various programmable chips have been born.Also various IC programming (burning) device is just created thus.
Existing method for burn-recording is as follows: will the programmable chip of burning be needed manually to be placed on programmer, and by burning program in programmable chip; Burning there is the programmable chip chip mounter of program to install in PCBA board and carry out PCBA board integrated testability again.
But above-mentioned recording device purposes is too single, and cost is higher; And application burn recording software carries out the method for burning by cd-rom recorder, easily there is operating mistake in complicated operation, cause the increase of product fraction defective in burning process; In addition, above-mentioned method for burn-recording by artificial mode plug programmable chip, inefficiency, and programmable chip repeatedly plug easily cause damage.
In addition, to the PCBA board having requirement of programming, also can carry out online burning at present, namely without the need to plug programmable chip, and directly burning program be carried out to the programmable chip in PCBA board.But this on-line rewriting method needs to take a burning position (frock) and carries out burning, and then uses a test bit (frock) to carry out the test of veneer circuit component.For PCBA board volume production, above-mentioned on-line testing method need increase test bit, brings various inconvenience (as: testing cost, testing efficiency, handling cost etc.) to user.
Summary of the invention
The technical problem to be solved in the present invention is, the problem low for above-mentioned PCBA board testing efficiency, handling cost is high, provides a kind of PCBA board test macro and method.
The technical scheme that the present invention solves the problems of the technologies described above is, provides a kind of PCBA board test macro, and for testing PCBA board, described PCBA board comprises multiple functional circuit and at least one programmable chip; Described PCBA board test macro comprises control end and at least one test fixture, and between test fixture and control end, have test signal line and programming signal line; Described test fixture comprises test cell, burning unit and connecting circuit, and wherein said test cell and burning unit are respectively via test pin and the burning pin of described connecting circuit connection PCB A plate; Described control end comprises burning control module and unit of testing and controlling, described burning control module, for controlling described burning unit, burning program is carried out to the programmable chip in PCBA board, described unit of testing and controlling, test for controlling test cell each functional circuit to PCBA board, call burning control module simultaneously and carry out burning control, and the chip control circuit of the programmable chip completed burning and PCBA board is tested.
In PCBA board test macro of the present invention, described unit of testing and controlling comprises standard data storage unit and result judging unit; Described standard data storage unit is for storing the reference test result of the chip control circuit of each functional circuit, programmable chip and PCBA board, and described result judging unit is used for judging that whether the chip control circuit of each functional circuit, programmable chip and PCBA board is qualified by the actual output when testing of the chip control circuit of each functional circuit of comparison, programmable chip and PCBA board with described reference test result.
In PCBA board test macro of the present invention, described unit of testing and controlling also comprises interruption control module, for stopping test when the chip control circuit of result judging unit arbitration functions circuit, programmable chip or PCBA board is defective.
In PCBA board test macro of the present invention, described unit of testing and controlling calls described burning control module with dynamic connection method.
The present invention also provides a kind of PCBA board method of testing, and described PCBA board comprises multiple functional circuit and at least one programmable chip, and described PCBA board method of testing comprises the steps:
Step (a), control end each functional circuit to the PCBA board on test fixture is tested respectively, call burning program simultaneously and burning program is carried out to the programmable chip of PCBA board, described test fixture is connected to test pin and the burning pin of described PCBA board, has test signal line and programming signal line between test fixture and control end;
Step (b), carries out chip control circuit test when each functional circuit is qualified and programmable chip burning completes to PCBA board.
In PCBA board method of testing of the present invention, described control end calls described burning program with dynamic connection method.
In PCBA board method of testing of the present invention, described step (a) comprising:
(a1) respectively the actual output of each functional circuit when input test data is compared with reference to test result;
(a2) confirm that functional circuit is defective when described reality exports and exceedes predetermined value with the difference with reference to test result.
In PCBA board method of testing of the present invention, comprise after described step (a2): (a3) stops the burning program to programmable chip and the test to functional circuit, confirm the defective and display alarm prompting of PCBA board simultaneously.
In PCBA board method of testing of the present invention, described step (b) comprising:
(b1) the actual output of the chip control circuit of PCBA board when input test data is compared with reference to test result, and perform step (b3) when described reality exports and exceedes predetermined value with the difference with reference to test result, otherwise perform step (b2);
(b2) judge whether the burning result of programmable chip reaches predetermined result, if reach predetermined result, perform step (b4), otherwise perform step (b3);
(b3) stop the test of described PCBA board and burning, confirm the defective and display alarm prompting of PCBA board simultaneously;
(b4) chip control circuit of PCBA board is tested, and perform step (b3) when testing the actual output obtained and exceeding predetermined value with the difference with reference to test result, otherwise confirm PCBA board test passes.
PCBA board test macro of the present invention and method, by burning program is embedded automatic testing process, make functional circuit test process and burning course synchronization carry out, not only saved test fixture, and improve efficiency.In addition, the present invention can stop burning and integrated testability in time when functional circuit defect, thus effectively reduces testing cost, improves testing efficiency, management of being more convenient for.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of PCBA board test macro first embodiment of the present invention.
Fig. 2 is the schematic diagram of the embodiment of unit of testing and controlling in Fig. 1.
Fig. 3 is the process flow diagram of PCBA board method of testing embodiment of the present invention.
Fig. 4 is the process flow diagram of another embodiment of PCBA board method of testing of the present invention.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
As shown in Figure 1, be the schematic diagram of PCBA board test macro embodiment of the present invention.In the present embodiment, PCBA board 30 to be tested comprises multiple functional circuit and at least one programmable chip, and test macro comprises control end 10 and at least one test fixture 20.Wherein test fixture 20 comprises test cell 21, burning unit 22 and connecting circuit 23.Control end 10 comprises unit of testing and controlling 11 and burning control module 12.Test cell 21 and burning unit 22 are respectively via test pin and the burning pin of connecting circuit 23 connection PCB A plate 30.Above-mentioned control end 10 can be the equipment that PC etc. is provided with test procedure; Test fixture 20 is integrated with test and burning, and except test signal line, also has programming signal line between test fixture 20 and control end 10.Test cell 21, burning unit 22, unit of testing and controlling 11 and burning control module 12 is realized by hardware, software or its combination.
Above-mentioned burning control module 12 carries out burning program for the programmable chip controlled in burning unit 22 pairs of PCBA board 30, wherein this burning control module 12 can be the manual burn recording software of factory that IC manufacturer provides, or according to the burn recording software that the api function of the IC burning of IC producer is developed.Especially, burning control module 12 can adopt the mode of dynamic link library (DLL) to realize, and dynamic link library is convenient to other softwares and is called it and revise.
Unit of testing and controlling 11 is tested respectively for the functional circuit controlling test cell 21 pairs of PCBA board 30; While to functional circuit test, this unit of testing and controlling 11 is also called burning control module 12 and is carried out burning control (such as calling described burning control module 12 with dynamic connection method), to realize the burning program of programmable chip; Complete in programmable chip burning, unit of testing and controlling 11 is also tested the burning result of programmable chip and the chip control circuit of PCBA board 30.
In above-described embodiment, due to by burning program Embedded test process, functional circuit test process and burning course synchronization are carried out, has not only saved test fixture, and improve efficiency, be convenient to management.
In another embodiment of the invention, the unit of testing and controlling 11 of above-mentioned PCBA board test macro also comprises standard data storage unit 111 and result judging unit 112, as shown in Figure 2.
Standard data storage unit 111 is for storing with reference to test result, the programmable chip that this reference test result is each qualified functional circuit, burning completes and the chip control circuit of the PCBA board output data when input test data respectively, can judge each functional circuit with this, whether the chip control circuit of programmable chip that burning completes and PCBA board qualified.Result judging unit 112 for by comparison with reference to test result and each functional circuit, the actual output of chip control circuit when input test data of the programmable chip that burning completes and PCBA board judges each functional circuit, whether the chip control circuit of the programmable chip that burning completes and PCBA board is qualified, if such as functional circuit, the actual output when input test data of the chip control circuit of the programmable chip that burning completes or PCBA board with reference within the scope of test result time, arbitration functions circuit, the chip control circuit of the programmable chip that burning completes or PCBA board is qualified.
Above-mentioned unit of testing and controlling 11 also can comprise one and interrupt control module 113, this interruption control module 113 for judging arbitrary functional circuit at result judging unit 112, the chip control circuit of programmable chip that burning completes or PCBA board makes burning control module 11 and unit of testing and controlling 12 stop, to do further process (such as display alarm information etc.) time defective.
As shown in Figure 3, be the process flow diagram of PCBA board method of testing embodiment of the present invention, wherein PCBA board comprises multiple functional circuit and at least one programmable chip.The method comprises the following steps:
Step S31: control end each functional circuit to the PCBA board on test fixture is tested respectively, calls burning program simultaneously and carries out burning program to the programmable chip of PCBA board, above-mentioned test fixture is connected to test pin and the burning pin of PCBA board.
When testing each functional circuit, judge that whether the programmable chip that each functional circuit and burning complete is qualified by comparison with reference to the actual output when input test data of test result and each functional circuit.
In this step, burning program can be called with dynamic connection method in testing and carry out burning control.
In this step, the test of each functional circuit of PCBA board and the burning of programmable chip operated at same test fixture and carries out simultaneously, thus not only saving test fixture, and saving the time.
Step S32: in each functional circuit test passes and programmable chip burning is qualified, control end carries out chip control circuit test to PCBA board.In this step, judge that whether the chip control circuit of PCBA board is qualified by comparison with reference to the actual output when input test data of test result and PCBA board.
As shown in Figure 4, it is the schematic flow sheet of another embodiment of PCBA board method of testing of the present invention, PCBA board in this embodiment comprises multiple functional circuit and at least one programmable chip equally, and the test fixture at this PCBA board place is connected to test pin and the burning pin of PCBA board simultaneously.The method comprises the following steps:
Step S41: control end each functional circuit to the PCBA board on test fixture is tested respectively, such as, to each functional circuit input test data respectively, and obtains the output of each functional circuit.
Step S42: control end calls burning program and carries out burning program to the programmable chip of PCBA board, and obtains burning result.This step and step S41 synchronously perform.
Step S43: the actual output of each functional circuit when input test data is compared with reference to test result.
Step S44: actual output during programmable chip input test data burning completed compares with reference to test result.
Step S46: the test of arbitration functions circuit and programmable chip burning whether all qualified, namely whether actual output conforms to reference test result.If qualified (namely actual output conforms to with reference to test result), perform step S47, otherwise perform step S51, namely confirm defective, the prompting of display alarm simultaneously.
Step S47: control end carries out chip control circuit test to the PCBA board on test fixture, such as, to the input interface input test data of the chip control circuit of PCBA board, and obtains corresponding output.
Step S48: actual output test obtained compares with reference to test result,
Step S49: perform step S51 when reality exports and exceedes predetermined value with the difference with reference to test result, otherwise perform step S50.
Step S50: confirm PCBA board test passes.
Step S51: exact p-value is defective, the prompting of display alarm simultaneously.
In this embodiment, owing to stopping test in time when functional circuit test or burning test failure, the test duration can be reduced further, improve testing efficiency.
The above; be only the present invention's preferably embodiment, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.
Claims (9)
1. a PCBA board test macro, for testing PCBA board, described PCBA board comprises multiple functional circuit and at least one programmable chip; It is characterized in that: described PCBA board test macro comprises control end and at least one test fixture, and there is test signal line and programming signal line between test fixture and control end; Described test fixture comprises test cell, burning unit and connecting circuit, and wherein said test cell and burning unit are respectively via test pin and the burning pin of described connecting circuit connection PCB A plate; Described control end comprises burning control module and unit of testing and controlling, described burning control module, for controlling described burning unit, burning program is carried out to the programmable chip in described PCBA board, described unit of testing and controlling, test for controlling test cell each functional circuit to described PCBA board, call described burning control module simultaneously and carry out burning control, and the chip control circuit of the programmable chip completed burning and PCBA board is tested.
2. PCBA board test macro according to claim 1, is characterized in that: described unit of testing and controlling comprises standard data storage unit and result judging unit; Described standard data storage unit is for storing the reference test result of the chip control circuit of each functional circuit, programmable chip and PCBA board, and described result judging unit is used for judging that whether the chip control circuit of each functional circuit, programmable chip and PCBA board is qualified by the actual output when testing of the chip control circuit of each functional circuit of comparison, programmable chip and PCBA board with described reference test result.
3. PCBA board test macro according to claim 2, it is characterized in that: described unit of testing and controlling also comprises interruption control module, for stopping test when the chip control circuit of result judging unit arbitration functions circuit, programmable chip or PCBA board is defective.
4. PCBA board test macro according to claim 1, is characterized in that, described unit of testing and controlling calls described burning control module with dynamic connection method.
5. a PCBA board method of testing, described PCBA board comprises multiple functional circuit and at least one programmable chip, it is characterized in that, described PCBA board method of testing comprises the steps:
Step (a), control end each functional circuit to the PCBA board on test fixture is tested respectively, call burning program simultaneously and burning program is carried out to the programmable chip of PCBA board, described test fixture is connected to test pin and the burning pin of described PCBA board, has test signal line and programming signal line between test fixture and control end;
Step (b), carries out chip control circuit test when each functional circuit is qualified and programmable chip burning completes to PCBA board.
6. PCBA board method of testing according to claim 5, is characterized in that, described control end calls described burning program with dynamic connection method.
7. PCBA board method of testing according to claim 5, is characterized in that, described step (a) comprising:
(a1) respectively the actual output of each functional circuit when input test data is compared with reference to test result;
(a2) confirm that functional circuit is defective when described reality exports and exceedes predetermined value with the difference with reference to test result.
8. PCBA board method of testing according to claim 7, it is characterized in that, comprise after described step (a2): (a3) stops the burning program to programmable chip and the test to functional circuit, confirm the defective and display alarm prompting of PCBA board simultaneously.
9. PCBA board method of testing according to claim 5, is characterized in that, described step (b) comprising:
(b1) the actual output of the chip control circuit of PCBA board when input test data is compared with reference to test result, and perform step (b3) when described reality exports and exceedes predetermined value with the difference with reference to test result, otherwise perform step (b2);
(b2) judge whether the burning result of programmable chip reaches predetermined result, if reach predetermined result, perform step (b4), otherwise perform step (b3);
(b3) stop the test of described PCBA board and burning, confirm the defective and display alarm prompting of PCBA board simultaneously;
(b4) chip control circuit of PCBA board is tested, and perform step (b3) when testing the actual output obtained and exceeding predetermined value with the difference with reference to test result, otherwise confirm PCBA board test passes.
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| CN201110403015.9A CN103149526B (en) | 2011-12-07 | 2011-12-07 | PCBA board test macro and method |
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| CN201110403015.9A CN103149526B (en) | 2011-12-07 | 2011-12-07 | PCBA board test macro and method |
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| CN103149526B true CN103149526B (en) | 2016-03-23 |
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| CN112858869A (en) * | 2019-11-12 | 2021-05-28 | 深南电路股份有限公司 | PCBA board burning and testing method and system |
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| CN114814540B (en) * | 2022-04-20 | 2023-04-28 | 苏州吾爱易达物联网有限公司 | SLT test method and system of SIP chip |
| CN117370136A (en) * | 2023-10-19 | 2024-01-09 | 千思跃智能科技(苏州)股份有限公司 | PCBA burns record capability test system based on data analysis |
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Effective date of registration: 20191126 Address after: 215000 No.16, Youxiang Road, Yuexi, Wuzhong District, Suzhou City, Jiangsu Province Patentee after: Suzhou Huichuan Technology Co.,Ltd. Address before: 518101 Guangdong city of Shenzhen province Baoan District no 70 District Liu Xian two road Hongwei Dong Industrial Zone E Co-patentee before: Suzhou Huichuan Technology Co.,Ltd. Patentee before: Shenzhen Huichuan Technology Co., Ltd. |