CN102590730A - Modularized open PCBA (Printed Circuit Board Assembly) functional circuit test platform, system and method - Google Patents
Modularized open PCBA (Printed Circuit Board Assembly) functional circuit test platform, system and method Download PDFInfo
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Abstract
The invention provides a modularized open PCBA (Printed Circuit Board Assembly) functional circuit test platform, system and method. The quality of a PCBA product is effectively controlled by using a half-automatic test manner. When a test table uses a needle bed and a relay switching group controlled by a single chip microcomputer to test different PCBAs, probes of the needle bed are reconfigured, and then one ends of the probes are connected with a relay, so that the expansibility is improved. In view of the system reusability, the test table matched with one type of the PCBA is pre-manufactured. When the PCBA is tested by only using the corresponding test table and opening an attest file, the test efficiency is greatly improved. A test instrument can be replaced according to test demands, so as to expand a system test function. The modularization open PCBA functional circuit test platform is a core of an entire test platform to control the operation state of the entire test process and is used for judging and recording the test content and result of each step, so that the test result is finally obtained. The modularized open PCBA functional circuit test platform is convenient to store and output the data.
Description
Technical field
The invention belongs to automation function testing apparatus field, be specifically related to the open PCBA functional test of a kind of modularization platform.
Background technology
PCBA Chinese is real device, circuit board; In the batch production process of PCBA; Because equipment running status and operator's human factor etc. can not guarantee that the PCBA that produces is intact article all, this just requires to add various testing apparatus and testing tool at the end of producing; All size and parameter with all real device, circuit boards of guaranteeing to dispatch from the factory during with design are in full accord, and this has just produced various means of testing such as ICT, AOI, X-Ray, Boundary-Scan, FCT.Although various new technologies emerge in an endless stream, functional test still is to guarantee that product arrives final applied environment and just can work requisite means at once.
Built-In Self Test applied more and more in the modern electronic product, this should advocate energetically, because it can reduce the cost of functional test, but can not eliminate functional test fully.If the occasion of using extremely important (like fields such as military affairs, aviation, automobile, traffic, medical treatment); Perhaps the cost of final products and complexity (like communication network, power house etc.) are very high; So more need guarantee product self and in proper working order when lumping together with other system, functional test at this moment will be necessary.
Functional test (FCT:Functional Circuit Test) refers to the running environment (excitation and load) that test target plate (UUT:Unit Under Test) is provided simulation; Make it work in various design points, thereby the parameter that gets access to each state is verified the method for testing of the function quality of UUT.Briefly, be exactly that UUT is loaded suitable excitation, measure the output terminal response and whether meet the requirements.Functional test after the real device, circuit board of general special finger (PCBA) powers on comprises: the measurement of voltage, electric current, power, power factor (PF), frequency, dutycycle, position finding, LED brightness and color identification, LCD character and functional parameters such as color identification, voice recognition, temperature survey and control, pressure survey and control, accurate trace movement control, FLASH and EEPROM online burning.
Functional test relates to simulation, numeral, storer, RF and power circuit, will use different Test Strategies usually.Test comprises a large amount of actual critical function paths and structure verification (confirming does not have hard error), to remedy the part that the front test process is omitted.This need constantly be added to a large amount of analog/digital excitations on the UUT, monitors the analog/digital response of as much quantity simultaneously, and controls its implementation fully.
Functional test can be made the life cycle different phase at product and implemented, and at first is the engineering development stage, before system produces checking, confirms the new product function; Also be necessary then aborning, as the part of whole flow process, through the system testing reduction disfigurement discovery cost (omission cost) of costliness; At last, also be indispensable in the delivery stage of shipping, it can reduce the expense in the site of deployment maintenance, and assurance function normally and not can be sent back.
Functional test has various ways, and these forms are respectively having relative merits aspect cost, time, effect and the maintainability, mainly is divided into following four kinds of fundamental types:
1, model measurement system
Checking the simplest method of an equipment (wiring board or module) function in theory is exactly to be placed on it in the model system or subsystem the same with genuine environment, sees then whether its work is normal.If normal, we can have very big assurance to think that it is good, if undesired, the technician will detect and hope to find out failure reasons with guide maintenance.But in fact, this insertion mode of powering on has a lot of shortcomings and seldom effective, though it can be used as replenishing of other testing scheme sometimes.
2, test board
Test board is a conventionally test environment, comprise and equipment under test between excitation/response interface, the cycle tests and the control of special test procedure regulation.Excitation is provided by the self-defined electronic equipment of reference power supply and experimental apparatus, special switch, load and terminal (like the numeral excitation) with response usually.Here anchor clamps are very important parts, can be provided to correct signal path of equipment under test and connection.Under many circumstances, anchor clamps customize to each application basically, need to combine manual operations to be provided with.Test process manually carries out with control usually, leans on PC to assist sometimes, stipulates through written agreement or rules.Test board is connected to concrete product, and advantage is that cost is relatively low, and equipment is fairly simple, but reply during multiple product dirigibility relatively poor, even it is also not enough when a plurality of excitations of needs/response to some products.
3, special test equipment (STE)
Special test equipment is exactly the system that makes the test board operation automation theoretically, and the heart of system is a computer normally, controls through private bus and some programmable instruments.The selection that speed, performance, usable condition, cost and other factor affecting instrument bus and structure.Various instruments are with in common apparatus is stacked on one or more vertical cabinets, and then link on the equipment under test.There is robotization to handle, time, test duration and integrated operation is set all than manual test platform quickly and easily more.Though generating test procedure can be too not simple, required file will significantly reduce, and STE can expand to and satisfy multiple performance need, be generally used for producing or the maintenance center.
STE also has shortcoming, is apparent that overall cost most: equipment investment cost, running cost and program development cost.Equipment investment cost comprises exploitation, material, manufacturing, test, file system and the depreciation of platform, and running cost comprises anchor clamps cost, maintenance and spare part cost, instrument, indirect material and easily-consumed products, manual work and administration overhead.
4, automatic test equipment (ATE)
General Purpose Automatic Test Equipment (GPATE, or abbreviate ATE as) be a kind of very advanced person scheme flexibly, can satisfy multiple product and program test requirement, have three more than ten years history so far from initial appearance.After microcomputer-controlled instrument occurred, the structural design of ATE be directly to test needs, the system integration, signal communication dirigibility, the software and hardware that rises in value, was the key distinction between ATE and the STE towards the language of testing, graphic user interface etc.Except instrument comprehensively the integrated advantage of bringing, ATE can also for the signal route be connected the better scheme that provides.The special-purpose backboard of ATE in most cases comprises an emulation bus, can let instrument directly link any pin, and outer lead becomes complicated in can not making.This dirigibility can expand to usually analog-and digital-passage is lumped together (hybrid channel), makes the user at any time connect numeral or analog stimulus, and measures any pin of receiver.Consequently not only make cost simplify reduction greatly, test procedure also is easier to realize simultaneously.
According to the difference of control model, can be divided into: (1) manually control function test; (2) semiautomatic control functional test; (3) Automatic Control functional test.
Along with high-speed development of science and technology, in order to save production cost and to enhance productivity, some uses full automatic testing scheme present functional test.At present,, consider, still adopt manually or automanual testing scheme based on simplified design and minimizing cost of manufacture for the functional test of some simple Board Under Tests.
Summary of the invention
The technical matters that the present invention will solve is: the open PCBA functional test of a kind of modularization platform, test macro and method are provided, adopt the semi-automatic test mode, the PCBA product quality is control effectively.
The present invention solves the problems of the technologies described above the technical scheme of being taked to be: 1, the open PCBA functional test of modularization platform, and it is characterized in that: it comprises System Control Center, monitor station and testing tool; Described monitor station comprises needle-bar, relay switch group and single-chip microcomputer, needle-bar by with the test point position of PCBA one to one probe form, probe is connected with the relay switch group, the relay switch group is by Single-chip Controlling; Described System Control Center is the computing machine that the FCT test macro is housed, and computing machine and described single-chip microcomputer and testing tool communicate; Described testing tool is made up of checkout equipment able to programme, is connected with PCBA.
Press such scheme, described computing machine communicates through USB interface or serial ports and described single-chip microcomputer and testing tool.
Press such scheme, the probe on the described needle-bar is according to PCBA to be measured and corresponding test point position coordinates phase configuration, and probe one end links to each other with said relay switch group.
The open PCBA function test system of modularization, it is characterized in that: it comprises:
Database is used to preserve user profile, command information, facility information and interface display information; Wherein equipment comprises testing tool, single-chip microcomputer and computing machine;
User management module, be used for the administrative login user operating right and and database association, comprise two types of operator and programmers, the operator is forbidden programming module;
Display module as Man Machine Interface, is used for input instruction and conveys to other modules, and shows the real-time information of other modules;
Programming module is used to write or revise test file, and and database association;
The program execution module is used to open and move the test file that programming module configures;
Communication module is used for and testing tool and single chip communication, the detection data of collecting test instrument, the switch through Single-chip Controlling relay switch group;
The result treatment module is used to handle the detection data that testing tool is sent back, and whether the result who sets according to test file in the program execution module meets the requirements through the condition judgment corresponding results, and the result is passed to display module.
Press such scheme, the test file in the described programming module comprises:
Interventions Requested are used to describe the program that increases or revise;
Instruction, be used for option program the action that will carry out;
Describe, be used for the illustrated in detail Interventions Requested;
Parameter is used to set parameter required when executing instruction;
List of devices, the target device tabulation as execution command comprises testing tool, single-chip microcomputer and computing machine;
Function is used for the action that select target equipment need be carried out;
Jump instruction, be used in reference to settled before program carry out failure or pass through after need next bar program of carrying out;
Condition is used to the Rule of judgment of specifying program run successful;
Unit is used for the unit of selection check project;
On/lower limit, be used for when specifying through the condition scope that imposes a condition when being greater than or less than value range;
Wherein instruction, equipment, function, four information of condition are kept in the described database.
Press such scheme, described database adopts ACCESS 2000.
Press such scheme, described result treatment module also is used for the result is exported preservation or printing.
The open PCBA function test method of modularization, it is characterized in that: it may further comprise the steps:
1) preserves user profile, command information, facility information and interface display information; Wherein equipment comprises testing tool, single-chip microcomputer and computing machine;
2) start user management module; Eject user's dialog boxes for login through display module; After selecting relative users and inputing password; The user profile that user management module is preserved according to database authorizes login user corresponding authority, comprises two kinds of operator and programmers, if the operator is then forbidden programming module;
3) programmer writes or revises test file according to testing requirement;
4) open test file, selection needs test instruction of carrying out and the instruction that needs the record result, begins test;
5) the result treatment module is through the detection data of communication module acceptance test instrument; Whether the result who sets according to test file in the program execution module meets the requirements through the condition judgment corresponding results; Add the result to the test result tabulation by operator's demand, do not meet result's indicating through condition with various colors; The result of result treatment module passes to display module.
Press such scheme; Said step 3) is write or when revising test file; Elder generation's reading database; Instruction list in the database, list of devices, feature list and condition list be presented on the programming panel select for the programmer, simultaneously that these options are mutual restriction relation is saved in the programming module.
Press such scheme, the testing procedure that described step 4) is concrete is:
A, send excitation information to single-chip microcomputer, single-chip microcomputer is opened a TCH test channel according to the closed corresponding relays of instruction;
B, send enabling signal to testing tool, testing tool switches to the relevant detection pattern according to the instruction character string of sending, and begins sampling through the TCH test channel of opening;
C, testing tool will detect data and send to the result treatment module through communication module;
D, test point of every detection then carry out taking turns step a-c.
Beneficial effect of the present invention is:
1, monitor station adopts needle-bar and monolithic processor controlled relay switch group; Because different PCBA test points is different; Therefore a kind of PCBA usually can only corresponding needle-bar, if will test different PCBA, the probe on the needle-bar is reconfigured on the corresponding test point position coordinates of PCBA; Linking to each other probe one end with relay then gets final product, and has improved extendability; Consider the reusability of system,, waste time and energy on the contrary if all arrange probe and line again at every turn; Can cause testing efficiency to reduce greatly, therefore, one type of PCBA made in advance the monitor station of coupling; When this type of test PCBA; Only need to replace corresponding monitor station, open test file and can begin to detect, improved the efficient of functional test greatly.
2, can change corresponding testing tool according to the test needs, with the test function of expanding system; After changing testing tool; Only need the database of update system control center, testing tool is added list of devices, and the instruction set that increases its corresponding function gets final product (a normally combination of many programming instructions of function); Escalation process is very simple, need not to revise the source program of software; For fear of interim upgrade-system,, satisfy the demand of most of functional tests basically for system stores the configuration information of multiple instrument in advance.
3, the open PCBA function test system of modularization is the core component of whole test platform; Its main effect is the running status of control whole test process; And to the content measurement in each step and the result judges and record; Finally draw test result, and, be more convenient for the PCBA product quality is control effectively these results and data storage, output.
4, adopt ACCESS 2000 as database, guaranteed the versatility and the ease for use of database.
Description of drawings
Fig. 1 is the structured flowchart of one embodiment of the invention.
Fig. 2 is the needle-bar structural representation.
Fig. 3 is programming panel synoptic diagram.
Embodiment
Fig. 1 is the structured flowchart of one embodiment of the invention, and it comprises System Control Center, monitor station and testing tool; Described monitor station comprises needle-bar, relay switch group and single-chip microcomputer, needle-bar by with the test point position of PCBA one to one probe form, probe is connected with the relay switch group, the relay switch group is by Single-chip Controlling; Described System Control Center is the computing machine that the FCT test macro is housed, and computing machine and described single-chip microcomputer and testing tool communicate; Described testing tool is made up of checkout equipment able to programme, is connected with PCBA.Computing machine communicates through USB interface or serial ports and described single-chip microcomputer and testing tool.
Monitor station mainly is made up of monolithic processor controlled relay switch group and needle-bar, and it is the induction and the topworks of test process logical action, and various test environments are built through it by system, realizes test function.Each relay is a TCH test channel, and when relay closes, checkout equipment just can be gone up the data of test point through this lane testing PCBA.The needle-bar structure is as shown in Figure 2, on the needle-bar 2 according to the test point position configuration of PCBA 1 probe, a test point on the strict corresponding PCBA of each root probe is fixed in PCBA 1 on the needle-bar 2, probe will contact with corresponding test point.And the probe other end links to each other with relay on the intelligent fixture plate through lead, selects the TCH test channel of detecting instrument through the switch of relay.If will test different PCBA, the probe on the needle-bar is reconfigured on the corresponding test point position coordinates of PCBA, linking to each other probe one end with relay then gets final product.
Testing tool is mainly formed (like Tyke DMM4050 digital multimeter) by various programmable checkout equipments, and it mainly accomplishes the collecting work of various simulations in the test process or digital quantity.Testing tool can be changed according to the FCT demand, as when needs are done emc testing, can adopt pertinent instruments.
The open PCBA function test system of modularization comprises display module, database, user management module, programming module, result treatment module, program execution module and communication module.
Database is used to preserve user profile, command information, facility information and interface display information; Wherein equipment comprises testing tool, single-chip microcomputer and computing machine; Database is the nucleus module at The whole control center, adopts ACCESS 2000 as database, has guaranteed the versatility and the ease for use of database.
User management module, be used for the administrative login user operating right and and database association, comprise two types of operator and programmers, the operator is forbidden programming module.The operator can't use programming module, can only operate the test file that has write; Programmer's authority is higher than the operator, can use programming module to write or revise testing process, and testing process is saved as test file uses for the operator.When program start, can at first start user management module; Eject user's dialog boxes for login; After selecting relative users and inputing password, user management module can authorize login user corresponding authority according to the user profile that database is preserved, and starts software and forbids corresponding module according to authority.
Display module as Man Machine Interface, is used for input instruction and conveys to other modules, and shows the real-time information of other modules.
Programming module, the programming panel is as shown in Figure 3, is used to write or revise test file, and and database association; Every click once " is confirmed " or " increase " just revised or increased a test procedure.Acting as of each item input frame:
Interventions Requested: be used to describe the effect of the program of increase/modification.
Instruction: option program the action that will carry out, as say the word to testing apparatus, to the intelligent fixture plate say the word, time-delay etc.
Describe: be used for the illustrated in detail Interventions Requested.
Parameter: be used to set parameter required when executing instruction.As shown in Figure 3, need open relay No. 13, then need input relay numbering 13 in the parameter.
Equipment: the tabulation of the target device of execution command comprises checkout equipment, intelligent fixture plate and PC.Wherein checkout equipment is necessary for programmable instrument, like Tyke DMM4050 digital multimeter etc.
Function: the action that select target equipment need be carried out, like measuring voltage, measurement electric current etc.
Jump instruction: be used in reference to next the bar program that needs execution after settled preceding program execution is failed/passed through.
Condition: the Rule of judgment that designated program operation is successful, as greater than, less than etc.
Unit: the unit of selection check project, like V, A etc.
On/lower limit: when specify through condition be greater than, less than etc. during value range, scope need impose a condition in last/lower limit input frame.
Click " confirming " for revising present procedure, " increase " is for increasing the program that configures behind present procedure.
Instruction in the programming module, equipment, function, four information of condition all are kept in the database.Whole programming process is very simple, only needs on the programming panel, to select respective objects equipment and instruction action to get final product, and need not remove to study checkout equipment complicated program handbook.
The program execution module is used to open and move the test file that programming module configures; Adopt multithreading during operation, background thread is carried out the program that configures, and the follow procedure flow process is sent order or received data to monitor station or testing tool.
Communication module is used for and testing tool and single chip communication, the detection data of collecting test instrument, the switch through Single-chip Controlling relay switch group; Communication module one has two, is respectively applied for checkout equipment and monitor station and transmits data each other.Each communication module all can be selected USB or serial communication mode.
The result treatment module is used to handle the detection data that testing tool is sent back, and whether the result who sets according to test file in the program execution module meets the requirements through the condition judgment corresponding results, and the result is passed to display module.Can mark with various colors for undesirable test result.The operator also can preserve testing result or print through the result treatment module.
The open PCBA function test method of modularization may further comprise the steps:
1) preserves user profile, command information, facility information and interface display information; Wherein equipment comprises testing tool, single-chip microcomputer and computing machine.
2) start user management module; Eject user's dialog boxes for login through display module; After selecting relative users and inputing password; The user profile that user management module is preserved according to database authorizes login user corresponding authority, comprises two kinds of operator and programmers, if the operator is then forbidden programming module.
3) programmer writes or revises test file according to testing requirement.
Before detecting PCBA, at first write test file according to testing requirement by the programmer.When the programmer starts the programming panel; The first reading database of programming module meeting; Instruction list, list of devices, feature list, condition list be presented on the programming panel select for the programmer, simultaneously, also can be the mutual restriction relation of these options (as when selecting " time-delay " to instruct; Feature list and condition list all will become ash, be in not optional state) be saved in the programming module.
When the programmer choose the instruction that will carry out and click " is confirmed " or " increase " button after; Programming module is at first confirmed exectorial device target according to instruction; From database, inquire corresponding instrument programming instruction according to the function of selecting then; Parameter with programmer's input adds in the programming instruction character string then, at last character string is saved in the programmed instruction formation in the program execution module.After all program editings finish, instruction queue is saved as test file.
4) open test file, selection needs test instruction of carrying out and the instruction that needs the record result, begins test.
In the time will carrying out test operation, the power supply of first open detection platform, at this moment PCBA also supplies power and starts working.The operator opens a test file (operator can not update routine tabulation), and selections needs test instruction of carrying out and the instruction that needs the record result, clicks " moving continuously " or " single step run " and just can begin test job.
Concrete testing procedure is:
A, program execution module at first send handshaking information to checkout equipment and monitor station, confirm to connect, and send excitation information to single-chip microcomputer then, and single-chip microcomputer is opened a TCH test channel according to the closed corresponding relays of instruction.Measured waveform or frequency etc. if desired, program execution module also order single-chip microcomputer to produce a PWM ripple or sine wave etc.
B, send enabling signal to testing tool, testing tool switches to the relevant detection pattern according to the instruction character string of sending, and begins sampling through the TCH test channel of opening.System Control Center was in waiting status and started timer simultaneously this moment, in the time of expection, did not beam back test result when testing tool, just thought that testing tool do not receive the instruction New Development load instruction character string of laying equal stress on.If System Control Center repeats to have sent repeatedly same instructions and but still do not receive answer, then think to connect and interrupt and operator notified inspection circuit.
C, testing tool will detect data and send to the result treatment module through communication module.
D, test point of every detection then carry out taking turns step a-c.
5) the result treatment module is through the detection data of communication module acceptance test instrument; Whether the result who sets according to test file in the program execution module meets the requirements through the condition judgment corresponding results; Add the result to the test result tabulation by operator's demand, do not meet result's indicating through condition with various colors; The result of result treatment module passes to display module.
After all programs were finished, display interface can automatically switch to " test result " interface, and the operator can save as a file with the results list that detects, and also can directly print.Test process shows have the testing process of 60 steps to carry out the once required time less than 1 minute.
Claims (10)
1. the open PCBA functional test of modularization platform, it is characterized in that: it comprises System Control Center, monitor station and testing tool; Described monitor station comprises needle-bar, relay switch group and single-chip microcomputer, needle-bar by with the test point position of PCBA one to one probe form, probe is connected with the relay switch group, the relay switch group is by Single-chip Controlling; Described System Control Center is the computing machine that the FCT test macro is housed, and computing machine and described single-chip microcomputer and testing tool communicate; Described testing tool is made up of checkout equipment able to programme, is connected with PCBA.
2. the open PCBA functional test of modularization according to claim 1 platform is characterized in that: described computing machine communicates through USB interface or serial ports and described single-chip microcomputer and testing tool.
3. the open PCBA functional test of modularization according to claim 1 platform, it is characterized in that: the probe on the described needle-bar is according to PCBA to be measured and corresponding test point position coordinates phase configuration, and probe one end links to each other with said relay switch group.
4. the open PCBA function test system of modularization, it is characterized in that: it comprises:
Database is used to preserve user profile, command information, facility information and interface display information; Wherein equipment comprises testing tool, single-chip microcomputer and computing machine;
User management module, be used for the administrative login user operating right and and database association, comprise two types of operator and programmers, the operator is forbidden programming module;
Display module as Man Machine Interface, is used for input instruction and conveys to other modules, and shows the real-time information of other modules;
Programming module is used to write or revise test file, and and database association;
The program execution module is used to open and move the test file that programming module configures;
Communication module is used for and testing tool and single chip communication, the detection data of collecting test instrument, the switch through Single-chip Controlling relay switch group;
The result treatment module is used to handle the detection data that testing tool is sent back, and whether the result who sets according to test file in the program execution module meets the requirements through the condition judgment corresponding results, and the result is passed to display module.
5. the open PCBA function test system of modularization according to claim 4, it is characterized in that: the test file in the described programming module comprises:
Interventions Requested are used to describe the program that increases or revise;
Instruction, be used for option program the action that will carry out;
Describe, be used for the illustrated in detail Interventions Requested;
Parameter is used to set parameter required when executing instruction;
List of devices, the target device tabulation as execution command comprises testing tool, single-chip microcomputer and computing machine;
Function is used for the action that select target equipment need be carried out;
Jump instruction, be used in reference to settled before program carry out failure or pass through after need next bar program of carrying out;
Condition is used to the Rule of judgment of specifying program run successful;
Unit is used for the unit of selection check project;
On/lower limit, be used for when specifying through the condition scope that imposes a condition when being greater than or less than value range;
Wherein instruction, equipment, function, four information of condition are kept in the described database.
6. the open PCBA function test system of modularization according to claim 4, it is characterized in that: described database adopts ACCESS 2000.
7. the open PCBA function test system of modularization according to claim 4 is characterized in that: described result treatment module also is used for the result is exported preservation or printing.
8. the open PCBA function test method of modularization, it is characterized in that: it may further comprise the steps:
1) preserves user profile, command information, facility information and interface display information; Wherein equipment comprises testing tool, single-chip microcomputer and computing machine;
2) start user management module; Eject user's dialog boxes for login through display module; After selecting relative users and inputing password; The user profile that user management module is preserved according to database authorizes login user corresponding authority, comprises two kinds of operator and programmers, if the operator is then forbidden programming module;
3) programmer writes or revises test file according to testing requirement;
4) open test file, selection needs test instruction of carrying out and the instruction that needs the record result, begins test;
5) the result treatment module is through the detection data of communication module acceptance test instrument; Whether the result who sets according to test file in the program execution module meets the requirements through the condition judgment corresponding results; Add the result to the test result tabulation by operator's demand, do not meet result's indicating through condition with various colors; The result of result treatment module passes to display module.
9. the open PCBA function test method of modularization according to claim 8; It is characterized in that: said step 3) is write or when revising test file; Elder generation's reading database; Instruction list in the database, list of devices, feature list and condition list be presented on the programming panel select for the programmer, simultaneously that these options are mutual restriction relation is saved in the programming module.
10. the open PCBA function test method of modularization according to claim 8, it is characterized in that: the testing procedure that described step 4) is concrete is:
A, send excitation information to single-chip microcomputer, single-chip microcomputer is opened a TCH test channel according to the closed corresponding relays of instruction;
B, send enabling signal to testing tool, testing tool switches to the relevant detection pattern according to the instruction character string of sending, and begins sampling through the TCH test channel of opening;
C, testing tool will detect data and send to the result treatment module through communication module;
D, test point of every detection then carry out taking turns step a-c.
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| CN103002317A (en) * | 2012-11-16 | 2013-03-27 | 福州德州电子科技有限公司 | Automatic PCBA (printed circuit board assembly) testing method and system for display device |
| CN103076553A (en) * | 2012-12-28 | 2013-05-01 | 北京世纪东方国铁科技股份有限公司 | Test device for PCBA (printed circuit board assembly) |
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