CN101226222A - PCB multifunctional test system and implementing method - Google Patents
PCB multifunctional test system and implementing method Download PDFInfo
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- CN101226222A CN101226222A CNA2008100334539A CN200810033453A CN101226222A CN 101226222 A CN101226222 A CN 101226222A CN A2008100334539 A CNA2008100334539 A CN A2008100334539A CN 200810033453 A CN200810033453 A CN 200810033453A CN 101226222 A CN101226222 A CN 101226222A
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Abstract
The invention provides a PCB multifunctional test system and a relative method, belonging to electric device technical field, in particular to a system for testing the PCB properties and a relative method. The inventive system comprises a PC, a control module, a PC interface circuit, a loading source, a signal shift selecting and function converting module, a signal comparing module and a test point interface circuit. The invention can directly test different PCB via secondary programming and the electric signal expansion function of the loading source, thereby saving production cot and improving the testing efficiency of PCB.
Description
Technical field
The invention belongs to the electrical equipment field, relate to and a kind of PCB is carried out the system of performance test and the implementation method of system.
Background technology
Existing P CB plate (printed circuit board (PCB)) test macro generally is according to the concrete function of tested test run and independent designed system.When the user carried out production line operation, populated circuit board, the electronic product that every production is a type just needed the supporting circuit board testing system of a or many moneys of supplier designs of circuit board.Under the situation, improved use cost and the maintenance difficulties of user aspect circuit board testing like this; Simultaneously, also can prolong the Products Development cycle, be unfavorable for implementing efficiently production line operation.
Summary of the invention
The purpose of this invention is to provide a kind of PCB multifunctional test system and implementation method, can carry out the expansion on the function according to the difference of tested pcb board type.
A kind of PCB multifunctional test system, it is achieved in that this system comprises: PC is the microcomputer that is mounted with PCB multifunctional testing program; Control module includes in order to the test result of pcb board being realized the single-chip microcomputer of operational analysis function, and in order to the storage unit of store test data; The PC interface circuit is the communication interface that is connected between described PC and the control module; The loading source is the circuit module that is used for loading electronic signal on tested pcb board, includes direct current and loads the source and exchange the loading source; The signal gear is selected and the function modular converter, is arranged between described loading source and the tested pcb board, is used for regulating loading source electronic signal gear, and the functional module of changing between the function; The signal comparison module refers to and can carry out the A/D conversion to the electronic signal of tested pcb board, and is transferred to the circuit structure in the control module; The test point interface circuit is the interface circuit that is connected between control module and the signal comparison module.
A kind of implementation method of PCB multifunctional test system, it is achieved in that this method comprises the steps: step 1, the testing requirement of statistics Board Under Test; Step 2 at the rapid testing requirement of previous step, is carried out quadratic programming and file on PC; Step 3 starts whole PCB multifunctional test system; Step 4, the system call power supply is to tested PCB; Step 5, the system call test signal is to tested PCB; Step 6, according to the archive content in the step 2, the function of test PCB each several part changes following step 7 or step 8 over to according to test result; Step 7 obtains OK result, directly is transferred to step 9 or 10; Step 8 obtains NG result, directly is transferred to step 9 or 10; Step 9 realizes PC output, comprises screen display, printer prints, and deposits; Step 10 is to being identified by tested PCB.
The invention has the advantages that: utilize the quadratic programming operation among the present invention, and the expanding function of the source of loading electronic signal, can directly realize test function, thereby save the production cost of pcb board aspect, increase substantially the testing efficiency of pcb board various different pcb boards.
Description of drawings
The present invention will be described in more detail below in conjunction with accompanying drawing.
Fig. 1 is the structured flowchart of PCB multifunctional test system of the present invention.
Fig. 2 is the process flow diagram of the implementation method of PCB multifunctional test system of the present invention.
Fig. 3 utilizes the present invention to carry out pcb board test block diagram for example.
Embodiment
The present invention is described further below with reference to accompanying drawing.
Number designation explanation among the figure:
The 100-PC machine, 110-PC machine display screen, 120-keyboard, 130-printer; The 200-control module, 210-single-chip microcomputer, 220-storage unit; The 300-PC interface circuit, 310-test point interface circuit; 400-loads the source, and the 410-direct current loads the source, the 411-constant current source, and the 412-voltage source, 420-exchanges the loading source, and 421-1KHZ loads the source, and 422-10KHZ loads the source, and 423-100KHZ loads the source, and 424-10MKHZ loads the source; 500-signal gear is selected and the function modular converter; 600-signal comparison module; The 700-PCB plate; 900-measures the situation block diagram, and 910-measures numbering, the 920-test point, and the 930-standard value, 940-deviation thresholding, the 950-measured value, the 960-test point is estimated, the 970-overall merit.
The explanation of Fig. 1:
Shown in the ginseng figure, this PCB multifunctional test system, its structure situation is such: PC 100 is user oriented main operation interfaces in the native system; 200 of control modules are to the overall control action of playing of whole test process; PC interface circuit 300 is the communication interfaces that are connected between PC 100 and the control module 200; Be directed to pcb board 700, be provided with loading source 400, can load specific electronic signal, between loading source 400 and pcb board 700, be provided with the signal gear and select and function modular converter 500 to pcb board; Be directed to pcb board 700, also be provided with signal comparison module 600, the electronic signal on the pcb board 700 is sampled, passes through tested points interface circuit 310 is sent in the control module 200 again.
Described PC 100, or be called PC, microcomputer etc.Be directed to the present invention, this PC 100 includes PC display screen 110 and keyboard 120; In addition, also include arithmetic processor,, have the storer of data storage function, as hard disk as CPU with operation processing function.
In addition, detected result can show on PC display screen 110, also can print by printer 130.
Described control module 200 includes in order to the test result of pcb board being realized the single-chip microcomputer 210 of operational analysis function, and in order to the storage unit 220 of store test data.Control module is signal loading, signal sampling, the signal functional module relatively of the realization pcb board 700 that is used for.Wherein set single-chip microcomputer 210 is the modular structures with aggregation of data processing capacity, includes operation processing function, control function, time clock feature, memory function, and interface etc.Storage unit 220 wherein can be stored the relative program that is used to carry out pcb board test job of the present invention, and can the cache test result.
Described PC interface circuit 300, refer to PC 100 between the circuit structure that is connected.This part is a hardware interface, by PC interface circuit 300, in the control module 200 that the control signal that comes from PC can be sent to, and the test result that comes from control module 200 can be sent in the PC 100 by PC interface circuit 300.
Described test point interface circuit 310 is the interface circuit forms that are connected between control module 200 and the signal comparison module 600.Interface circuit is fit to adopt bus structure to realize, by address bus, carries out the selection of testing process in the mode of coding, decoding, has powerful expansion and dirigibility.
Described loading source 400 refers to the circuit module that is used for loading electronic signal on tested pcb board 700.Loading source 400 mainly comprises two types, is respectively that direct current loads source 410 and exchanges loading source 420.In the present embodiment, direct current loading source 410 comprises constant current source 411 and voltage source 412.Constant current source 411 wherein is modular structures that the stable DC electric current can be provided; As an example, the intensity of constant current source 411 is adapted between 10mA～4A.Voltage source 412 wherein is the Voltage stabilizing modules that are used to provide burning voltage; As an example, the intensity of voltage source 412 is between 3V～24V.Constant current source 411 and voltage source 412, the two is the power supply that is used for measuring linear circuit on the pcb board 700.
Described interchange loads source 420, is the power supply that is used for measuring non-linear circuit on the pcb board 700.Exchange loading source 420, formed by the oscillatory circuit that can produce the different frequency alternating signal.Among the typical embodiment, exchange loading source 420 and be made up of the one at least in the following four types oscillatory circuit: 1KHZ loading source 421,10KHZ loading source 422,100KHZ load source 423,10MHZ loads source 424.The alternating signal that utilizes this several loadings source to be produced, the power supply that can finish when non-linear circuit is measured on current most pcb board 700 is supplied with.
Electronic signal in the whole loading source 400 can be done concrete selection as required, and expanding function is very powerful, thereby is that the test operation of directly realizing various different pcb boards lays the foundation.
Described signal gear is selected and function modular converter 500, is arranged between loading source 400 and the pcb board 700, and be used for regulating loading source 400 and press the electronic signal gear, and the functional module of changing between the function.Wherein the signal gear is selected, and refers to the kind that can select unlike signal in the loading source 400.And described function conversion refers to the changes of function between different test signals; Such as, be directed to the Pin locations on the same pcb board, after surveying overcurrent strength, can also the conversion testing function, measure the voltage value of this position.
Described signal comparison module 600 refers to and can the electronic signal of tested pcb board 700 be changed for control module 200 by A/D, and can be sent to circuit structure in the control module 200.
Described pcb board 700, the printed circuit board (PCB) of general reference all size, various sizes.In the present invention, can carry out the test of Electronic Performance at various pcb board 700, this also is a considerable advantage of the present invention.
The explanation of Fig. 2:
In the present invention, use following steps respectively, test by expanding the performance that realizes different pcb board 700.
The versatility of multifunctional test system of the present invention and extendability are all very strong.For novel pcb board, at first need to add up the conditions of demand of Board Under Test, according to the testing requirement of individual character, arrange next step various operations.
It is rapid to accept previous step, according to the testing requirement that is come out, carries out quadratic programming on PC.Described quadratic programming mainly refers among the present invention and is directed to specific testing requirement, in the PC operation interface, fills in each standard value of tested.After filling standard value, next step test result has just had the standard of comparison and analysis.Certainly, carry out in time to file behind the quadratic programming.
Preceding two steps mainly are to do the preliminary preparation of test.
After the preliminary work of front was carried out, corresponding the pcb board 700 that will test can directly carry out test job.In this step, mainly be to start whole PCB multifunctional test system, comprise start-up control module 200, loading source 400, the selection of signal gear and function modular converter 500, and signal comparison module 600 etc., make them in running order.
The fundamental purpose of this step is to be pcb board 700 loading powers of needs test.The power supply of required loading comes from loading source 400, includes direct current and loads source 410 and exchange loading source 420.The type of its power supply and numerical value can be regulated by selection of signal gear and function conversion module 500 via PC.
After the last power supply of tested pcb board 700 loadings, just can directly on tested pcb board 700, load test signal.Each pin place at pcb board 700 measures corresponding numerical value, for next step analysis lays the foundation.
In addition, the test data that is obtained is a simulated data, is fit to analog-signal transitions be become digital signal, and be transferred in the control module 200 by the A/D change-over circuit in the signal comparison module 600.Can be convenient to like this with step 2 in the standard value of each test item of being imported compare.
In this step, just can directly carry out having been compared between electronic signal measurement value on the tested PCB and the standard value.Step by the front has been transformed into digital signal with test result.This comparison and analysis process can both carry out in the one at least in PC 100 and control module 200; And in the present invention, preferred comparison and analysis equipment is PC 100.
On a pcb board 700, have a lot of measured data usually.When all measurement data were all qualified, it is qualified that this pcb board 700 just is considered as, and in this case, changes step 7 over to.
When having one or more measured data to exceed the deviation thresholding that allows on the pcb board 700, this pcb board 700 just is considered as defective, is transferred to following step 8.
As previously mentioned, when all test datas of tested PCB were all qualified, it was qualified just representing this beta version, obtained the result of OK, changed step 9 or step 10 over to.
As previously mentioned, when tested PCB had one or more test datas underproof, it was underproof just representing this beta version, obtained the result of NG (Not Good writes a Chinese character in simplified form), changed step 9 or step 10 over to.
The result who is obtained, can be directly PC display screen 110 by PC 100 show, perhaps print by the printer 130 that is connected with PC 100.In addition, also should in PC, deposit to its result, for future use.If step 10 is not also carried out, then change step 10 over to.
This step will start corresponding pcb board marking device.Directly on pcb board 700, identify test result, as the printed words of " OK " or " NG ".After finishing this step, be directed to the test job of this pcb board 700, just be through with.
The explanation of Fig. 3:
Shown in the ginseng figure, showed an example that utilizes the test data aspect that native system operates here.
In the present embodiment, whole form is called measurement situation block diagram 900, from left to right, is followed successively by:
Measure numbering 910, representing the sequence number of test point.
More than be the description of this invention and non-limiting, based on other embodiment of inventive concept, all among protection scope of the present invention.
Claims (14)
1. PCB multifunctional test system is characterized in that this system comprises:
PC is the microcomputer that is mounted with PCB multifunctional testing program;
Control module includes in order to the test result of pcb board being realized the single-chip microcomputer of operational analysis function, and in order to the storage unit of store test data;
The PC interface circuit is the communication interface that is connected between described PC and the control module;
The loading source is the circuit module that is used on tested pcb board loading electronic signal, include in order to the direct current that direct current signal is provided load the source with in order to the source of loading that exchanges of alternating signal to be provided;
The signal gear is selected and the function modular converter, is arranged between described loading source and the tested pcb board, is used for regulating loading source electronic signal gear, and the functional module of changing between the function;
The signal comparison module refers to and can carry out the A/D conversion to the electronic signal of tested pcb board, and is transferred to the circuit structure in the control module;
The test point interface circuit is the interface circuit that is connected between control module and the signal comparison module.
2. PCB multifunctional test system according to claim 1 is characterized in that: be directed to described PC, also be provided with in order to realize the printer of pcb board test result output function.
3. PCB multifunctional test system according to claim 1 is characterized in that: described DC source, include in order to the constant current source of steady current to be provided, and in order to the voltage source of burning voltage to be provided.
4. PCB multifunctional test system according to claim 3 is characterized in that: described constant current source is the module that the stable DC electric current of strength of current between 10mA～4A can be provided.
5. PCB multifunctional test system according to claim 3 is characterized in that: voltage source wherein is the Voltage stabilizing module that is used to provide 3V～24V burning voltage.
6. PCB multifunctional test system according to claim 1 is characterized in that: described interchange loads the source, is that 1KHZ loads the source, 10KHZ loads the one at least in source, 100KHZ loading source, this oscillatory circuit of four types of 10MHZ loading source.
7. the implementation method of a PCB multifunctional test system is characterized in that this method comprises the steps:
Step 1, the testing requirement of statistics Board Under Test;
Step 2 at the rapid testing requirement of previous step, is carried out quadratic programming and file on PC;
Step 3 starts whole PCB multifunctional test system;
Step 4, the system call power supply is to tested PCB;
Step 5, the system call test signal is to tested PCB;
Step 6, according to the archive content in the step 2, the function of test PCB each several part changes following step 7 or step 8 over to according to test result;
Step 7, PCB is qualified, obtains OK result, directly is transferred to step 9 or 10;
Step 8, PCB is defective, obtains NG result, directly is transferred to step 9 or 10;
Step 9 realizes PC output, comprises both one at least of screen display, printer prints, and deposits;
Step 10 identifies tested test plate (panel).
8. the implementation method of PCB multifunctional test system according to claim 7 is characterized in that: in step 4, the power supply of system call to the tested PCB comes from direct current and loads the source and exchange loading source one.
9. the implementation method of PCB multifunctional test system according to claim 7, it is characterized in that: in step 4, power supply type and the numerical value of system call to the tested PCB can directly be selected via the signal gear by PC and the function conversion module be regulated.
10. the implementation method of PCB multifunctional test system according to claim 7, it is characterized in that: corresponding step 5, after the system call test signal goes up to tested PCB, the test signal that is obtained is by the A/D change-over circuit in the signal comparison module, analog-signal transitions is become digital signal, and be transferred to control module.
11. the implementation method of PCB multifunctional test system according to claim 7, it is characterized in that: corresponding step 6, to electronic signal measurement value on the tested PCB and the comparison and analysis between the standard value, by PC and control module at least one carry out.
12. the implementation method of PCB multifunctional test system according to claim 11 is characterized in that: preferred comparison and analysis equipment is PC.
13. the implementation method of PCB multifunctional test system according to claim 7 is characterized in that: corresponding step 7 when all test datas on the tested PCB are all qualified, obtains OK result.
14. the implementation method of PCB multifunctional test system according to claim 7 is characterized in that: corresponding step 8 when having one or more test datas defective in all test datas on the tested PCB, just obtains NG result.
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| CN 200810033453 CN101226222B (en) | 2008-02-02 | 2008-02-02 | PCB multifunctional test system and implementing method |
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| CN 200810033453 CN101226222B (en) | 2008-02-02 | 2008-02-02 | PCB multifunctional test system and implementing method |
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| CN101937053A (en) * | 2010-07-30 | 2011-01-05 | 蚌埠依爱消防电子有限责任公司 | Device for automatically testing circuit board with microprocessor |
| CN102628922A (en) * | 2012-04-17 | 2012-08-08 | 无锡市大元广盛电气有限公司 | Manual testing board |
| CN102636741A (en) * | 2012-04-27 | 2012-08-15 | 北京星河康帝思科技开发有限公司 | Method and system for testing circuit board |
| CN103149526A (en) * | 2011-12-07 | 2013-06-12 | 深圳市汇川技术股份有限公司 | Printed circuit board assembly (PCBA) board testing system and PCBA board testing method |
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| CN105785259A (en) * | 2016-05-04 | 2016-07-20 | 天津商业大学 | Programmable circuit board test module and test method thereof |
| CN105806759A (en) * | 2016-04-28 | 2016-07-27 | 四川赛科安全技术有限公司 | Automatic smoke detector online test tooling and testing method thereof |
| CN108169613A (en) * | 2018-01-12 | 2018-06-15 | 日本电产理德机器装置(浙江)有限公司 | Electrical detection device |
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| KR0157943B1 (en) * | 1995-09-27 | 1999-03-20 | 이희종 | Passive parts measurement circuit in pcb |
| CN2706771Y (en) * | 2003-12-31 | 2005-06-29 | 李日生 | Automatic tester for circuitboard |
| CN1556416A (en) * | 2003-12-31 | 2004-12-22 | 李日生 | Circuit automatic testing device possessing appliance capable of displaying appropriate time aelay and its method |
| CN101038325B (en) * | 2007-02-14 | 2010-11-10 | 北京中星微电子有限公司 | Method and device for testing chip |
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| CN101937053A (en) * | 2010-07-30 | 2011-01-05 | 蚌埠依爱消防电子有限责任公司 | Device for automatically testing circuit board with microprocessor |
| CN103149526B (en) * | 2011-12-07 | 2016-03-23 | 深圳市汇川技术股份有限公司 | PCBA board test macro and method |
| CN103149526A (en) * | 2011-12-07 | 2013-06-12 | 深圳市汇川技术股份有限公司 | Printed circuit board assembly (PCBA) board testing system and PCBA board testing method |
| CN102628922A (en) * | 2012-04-17 | 2012-08-08 | 无锡市大元广盛电气有限公司 | Manual testing board |
| CN102636741A (en) * | 2012-04-27 | 2012-08-15 | 北京星河康帝思科技开发有限公司 | Method and system for testing circuit board |
| CN103278764A (en) * | 2013-05-27 | 2013-09-04 | 南京南瑞继保电气有限公司 | Automatic board card detecting device of direct current power transmission control protective system |
| CN104345262A (en) * | 2014-10-27 | 2015-02-11 | 华南农业大学 | Universal circuit board test system |
| CN104345262B (en) * | 2014-10-27 | 2017-06-27 | 华南农业大学 | A kind of universal circuit Board Test System |
| CN105806759A (en) * | 2016-04-28 | 2016-07-27 | 四川赛科安全技术有限公司 | Automatic smoke detector online test tooling and testing method thereof |
| CN105785259A (en) * | 2016-05-04 | 2016-07-20 | 天津商业大学 | Programmable circuit board test module and test method thereof |
| CN108169613A (en) * | 2018-01-12 | 2018-06-15 | 日本电产理德机器装置(浙江)有限公司 | Electrical detection device |
| CN108761302A (en) * | 2018-03-02 | 2018-11-06 | 深圳怡化电脑股份有限公司 | The method and system that currency examination device mainboard is tested |
| CN111650498A (en) * | 2020-07-07 | 2020-09-11 | 重庆宇航智能装备研究院有限公司 | 3D printer circuit board testing arrangement |
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