CN109917276A - Multifunction circuit board automatic test equipment, test macro and test method - Google Patents
Multifunction circuit board automatic test equipment, test macro and test method Download PDFInfo
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Abstract
The present invention relates to a kind of multifunction circuit board automatic test equipment, including industrial all-in-one machine, test macro and test fixture, wherein, test macro includes host computer and the server connecting with host computer, two-dimensional code scanning rifle, Switching Power Supply, programmable power supply, USBCAN signal adapter, programmable signal generator, program-controlled light power meter, NI data collecting card, program-control electronic load, programmable oscilloscope, program-controlled multimeter.Multifunction circuit board automatic test equipment, test macro and the test method, a platform is solved the problems, such as to more circuit-under-test plates, improve the freedom degree of replacement circuit-under-test plate, friendly man-machine interface is realized in such a way that upper computer software is combined with database, the functions such as the storage to all relevant parameters of circuit-under-test plate, inquiry, screening, retrospect are realized simultaneously, the testing efficiency of circuit board is improved, artificial participate in is reduced.
Description
Technical field
It tests and sets automatically the present invention relates to wiring board technical field of performance test more particularly to a kind of multifunction circuit board
Standby, test macro and test method.
Background technique
For electronic product manufacturer, the automatic test to each function of circuit-under-test plate can be realized, undoubtedly
A kind of optimal selection cut payroll to improve efficiency, improve product quality.
Currently on the market it can be seen that Related product it is less, and substantially special test equipment is (only for a kind of quilt
The test of slowdown monitoring circuit plate), it is nonstandard customization test equipment.After after tested, test equipment only provides qualified or not test result, right
It can not be saved in the test data of each block of circuit-under-test plate, and inconvenience is to circuit-under-test plate of the same race or with batch circuit-under-test
The discreteness of a certain parameter of plate is analyzed, and can not be analyzed well the stability of product and reliability.
The test equipment of the prior art has the drawback that
(1) circuit-under-test plate automatic test equipment is only capable of testing the circuit-under-test plate of same model, more for having
The manufacturer of kind circuit-under-test plate is not flexible, impracticable, and the resource of test equipment can not be multiplexed.
(2) fault point of abnormal circuit-under-test plate can not targetedly be provided, it has not been convenient to tie up to circuit-under-test plate
It repairs.
(3) the specific test parameter of circuit-under-test plate can not save, and can not trace the block circuit-under-test when something goes wrong
Plate specific test parameter at that time and tester, can not confirm the link that circuit-under-test plate goes wrong.
(4) consistency analysis can not be carried out to the same parameters of different circuit-under-test plates, and then cannot predicts circuit-under-test
The functional reliability of plate.
Summary of the invention
The object of the present invention is to provide a kind of multifunction circuit board automatic test equipment, test macro and test methods, adopt
With the combination of general-utility test platform and testing jig special, a platform is realized to a variety of circuit-under-test plate purposes, is used
The mode of upper computer software and database combination keeps test interface more friendly, and operation more simple, intuitive is realized to tested
The functions such as storage, inquiry, screening, the retrospect of circuit board testing result.
The present invention is achieved through the following technical solutions: a kind of multifunction circuit board automatic test equipment, including industry
All-in-one machine, test macro and test fixture, the industrial test all-in-one machine are connect by test macro with test fixture, the survey
Examination jig includes workbench, needle bed and top hold-down mechanism, and several pilot pins, the needle bed setting are fixed on the workbench
In pilot pin, the top hold-down mechanism is correspondingly arranged above needle bed, including the first in command, the first guide rod and auxiliary mould
Plate, the first in command are connect by the first guide rod with backman's loading board, the first in command can drive the rising of backman's loading board or under
Drop is to compress or unclamp the circuit board on needle bed.
Since the type of circuit board is more, in order to increase versatility, convenient for being accurately positioned, the test fixture further includes side
Portion's positioning mechanism, the side positioning mechanism include second handle, the second guide rod and side plate, and the second handle is led by second
Bar is connect with side plate, and second handle can drive side plate to move left and right to position the circuit board side on needle bed by the second guide rod.
For the ease of monitoring, the multifunction circuit board automatic test equipment further includes two-dimensional code scanning rifle, the two dimension
Code scanner is correspondingly arranged above needle bed by movable support.
Due to the position disunity of the fixation hole of circuit board, for the ease of fixation, multiple companies are offered on the workbench
Hole is connect, the pilot pin is detachably connected with connecting hole, can adjust the position of pilot pin installation according to the fixation hole position of circuit board
It sets.
The present invention also provides a kind of multifunction circuit board Auto-Test Systems, are tested automatically using above-mentioned multifunction circuit board
Equipment, including host computer and the server being connect with host computer, two-dimensional code scanning rifle, Switching Power Supply, programmable power supply, USBCAN letter
Number converter, programmable signal generator, program-controlled light power meter, NI data collecting card, program-control electronic load, programmable oscilloscope, journey
Multimeter is controlled,
The server is for storing test data, being edited, being inquired, being screened and being compared；
The two-dimensional code scanning rifle is used to scan the two dimensional code of circuit-under-test plate, identifies circuit-under-test plate information；
The Switching Power Supply is used to provide power supply for test macro；
The programmable power supply is used to provide required test voltage for circuit-under-test plate, while reading the work of circuit-under-test plate
Electric current；
The USBCAN signal adapter is for testing CAN communication；
The programmable signal generator is for signal source needed for providing circuit-under-test plate；
The program-controlled light power meter is used to test the transmitting optical power of circuit-under-test plate；
The NI data collecting card is used to acquire the analog voltage value and output digital output modul signal of circuit-under-test plate；
Load of the program-control electronic load as circuit-under-test plate pulls out rated current；
The programmable oscilloscope is used to test the waveform of coherent signal；
The program-controlled multimeter is used to measure the basic parameter of circuit-under-test plate.
The present invention also provides a kind of multifunction circuit board automatic test approach, are tested automatically using above-mentioned multifunction circuit board
System includes the following steps:
One, the testing process and test data of circuit-under-test plate are configured by host computer；
Two, the test fixture for selecting circuit-under-test plate, circuit-under-test plate is fixed in test fixture, and is docked upper
Machine；
Three, the two dimensional code on circuit-under-test plate is scanned by two-dimensional code scanning rifle；
Four, host computer is to the functional test one by one in order of circuit-under-test plate, and host computer real-time display is tested in test process
The test mode of circuit board, testing progress, test passes item and nonconformance measured parameter value；
Five, after the completion of test the integrated testability as a result, prompt simultaneously of prompt circuit-under-test plate whether upload test result or
It is directly automatic to upload test result, complete the test of circuit-under-test plate.
Wherein, in step 1, the test data of configuration includes output voltage, output electric current, delay function, voltage acquisition model
It encloses, voltage acceptability limit and voltage peak-to-peak value.
The beneficial effects of the present invention are: the multifunction circuit board automatic test equipment, test macro and test method use
The mode of general-utility test platform and testing jig special solves the problems, such as a platform to more circuit-under-test plates, improves replacement
The freedom degree of circuit-under-test plate realizes friendly man-machine interface, simultaneously in such a way that upper computer software is combined with database
The functions such as the storage to all relevant parameters of circuit-under-test plate, inquiry, screening, retrospect are realized, the test of circuit board is improved
Efficiency reduces artificial participation, realizes the autorun of circuit board, while spirit on the basis of not needing change hardware resource
The test of realization various boards living.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of multifunction circuit board automatic test equipment of the invention；
Fig. 2 is the structural schematic diagram of test fixture of the invention；
Fig. 3 is the structural schematic diagram of multifunction circuit board Auto-Test System of the invention；
Fig. 4 is the schematic diagram of backman's loading board RS485 communicating circuit of the invention；
Fig. 5 is the schematic diagram of optical splitter control circuit of the invention；
Fig. 6 is the schematic diagram of auxiliary relay drive circuit of the invention；
Fig. 7 is the schematic diagram of auxiliary relay plate control circuit of the invention；
Fig. 8 is the schematic diagram of auxiliary relay plate RS485 communicating circuit of the invention；
Fig. 9 is the schematic diagram of Universal interface board circuit of the invention.
Specific embodiment
The preferred embodiments of the present invention will be described in detail with reference to the accompanying drawing, so that advantages and features of the invention energy
It is easier to be understood by those skilled in the art, so as to make a clearer definition of the protection scope of the present invention.The present invention is mentioned
The direction term arrived, such as "upper", "lower", "front", "rear", "left", "right", "top", "bottom" etc. are only with reference to annexed drawings
Direction.Therefore, the direction term used is to illustrate and understand the present invention, rather than to limit the present invention.
As shown in Figure 1 and Figure 2, the work in rack 1 is arranged in including rack 1 in a kind of multifunction circuit board automatic test equipment
Industry all-in-one machine 2, test macro and test fixture.Test macro is arranged in rack 1, and industrial test all-in-one machine 2 passes through test system
System is connect with test fixture, and 1 bottom end of rack is fixed with the universal wheel 15 for shifting the test equipment.
The test fixture includes workbench 3, needle bed 5 and top hold-down mechanism, if offering involvement on the workbench 3
Hole is connect, is removably installed on each connecting hole there are four pilot pin 16, the position of pilot pin 16 is according to the mounting hole on needle bed 5
It is fixed to come, and needle bed 5 is directly placed in four pilot pins 16, and pilot pin 16 plays positioning support and positioning to it, according to
Different types of circuit board replaces corresponding needle bed 5, so as to adjust the position of pilot pin 16.Multifunction circuit board of the invention is certainly
Two-dimensional code scanning rifle 13 has also been devised in dynamic test equipment, and the two-dimensional code scanning rifle 13 is correspondingly arranged at needle by movable support 12
5 top of bed, movable support 12 are mounted in rack 1 by bracket 4.The top hold-down mechanism is correspondingly arranged at 5 top of needle bed,
Including the first in command 8, the first guide rod 7 and backman's loading board 6, the first in command 8 passes through the first guide rod 7 and backman's loading board 6
Connection, the first in command 8 can drive the first guide rod 7 to move up and down along guide sleeve 17, and backman's loading board 6 is driven to rise or fall,
To compress or unclamp the circuit board on needle bed 5.It is adapted to by replacement different needle bed 5 and backman's loading board 6 not of the same race
The circuit board of class, versatility are stronger.In order to further adapt to different circuit boards, side positioning mechanism is had also been devised in the present invention,
The side positioning mechanism includes second handle 9, the second guide rod 10 and side plate 11, and the second handle 9 passes through the second guide rod 10
It is connect with side plate 11, second handle 9 can drive the second guide rod 10 to move left and right, to drive side plate 11 along guide groove 18 or so
It is mobile, to position the circuit board side on needle bed 5.In addition, display screen 14 has also been devised in workbench 3, it is each for real-time display
Item test data.
Meanwhile the present invention has also been devised corresponding travel switch, fixture just normal power supply in place, in test process
Abnormal power-down；Heavy-duty connector introduces the output voltage and electronic load value of general-utility test platform；Universal interface board, signal connect
It is connected to NI data collecting card；Status indicator lamp indicates test mode and power supply status；Offline programmer, to circuit-under-test plate
MCU automated programming；Common simulation line simulates the actual cable of same size parameter.
A kind of multifunction circuit board Auto-Test System as shown in Figure 3, is tested automatically using above-mentioned multifunction circuit board
Equipment, including host computer and the server being connect with host computer, two-dimensional code scanning rifle, Switching Power Supply, programmable power supply, USBCAN letter
Number converter, programmable signal generator, program-controlled light power meter, NI data collecting card, program-control electronic load, programmable oscilloscope, journey
Control multimeter.
Host computer (industrial all-in-one machine): alternating interface between man and computer, operation upper computer software, the instrument into general-utility test platform
Equipment issues control signal, carries out data interaction, the entire automatic survey of the software coordinates control circuit board of host computer with server
Examination process, upper computer software gradually drives corresponding instrument and equipment to work according to pre-configured testing process, and readback phase
The test result of pass.Upper computer software has done the driving function of all hardware, and open to user, can arbitrary disposition parameter.Than
Such as: being configured, the veneer operating current of circuit-under-test plate can be configured to small by programmable power supply or program-controlled multimeter current gear
In 30mA (or other values), disconnected on testing jig special internal proprietary working plate automatically when electric current is greater than 30mA (other values)
The relay of the control power supply in face, realizes testing current and excess current protective function, while audio alert, host computer pass through net
Network will be in database of the test result according to the format upload server set.
Server: the hardware platform in operation data library has database software, stores test result data, operator can
Data edited, inquired, being screened etc. with sequence of operations, which is write using SQL Server.When host computer covers institute
After some configuration flows (one block of circuit-under-test plate has tested completion), host computer can be automatic or be inquired (real by configuring switching
The series of parameters of the circuit-under-test plate measured now) is uploaded to the corresponding unit of database according to the good table of configured in advance
In lattice (i.e. data are stored into server), parameter testing, the storage work of one piece of circuit board are completed at this time.
Two-dimensional code scanning rifle: the two dimensional code that scanning circuit-under-test plate is pasted above identifies circuit-under-test plate information (as this
All test results of the ID number of circuit-under-test plate, the final circuit-under-test plate are stored by unique identification of the ID to database),
If being configured with the module in auto test flow, host computer can scan two-dimensional code scanning rifle after test is to the step number
It passes data in host computer according to by USB interface, is stored according to specified format.Two-dimensional code scanning rifle is mainly used for tested
The reading for the two dimensional code that circuit board top is pasted, the exclusive identification code as the circuit board.
Programmable power supply: the test voltage needed for being provided to circuit-under-test plate, while circuit-under-test plate operating current is read, if
The module is configured in auto test flow, host computer will be sent by USB port to programmable power supply defeated after the step is arrived in test
The order (specific voltage value is configured in auto test flow) of relevant voltage values out, while sending read to programmable power supply again
Current value (specific current value acceptability limit is configured in auto test flow), and according to the configuration feelings of process in automatic test
Condition determines next step What for.Programmable power supply is mainly used for voltage value required for providing to circuit-under-test plate, while can read
Take the working current value of circuit-under-test plate.
Program-controlled multimeter: the parameters such as voltage, electric current, resistance for measuring circuit-under-test plate, if in auto test flow
It is configured with the module, host computer will be sent to program-controlled multimeter by USB port and be ordered after the step is arrived in test, such as be tested currently
The parameters such as voltage, small-range electric current, wide range electric current, resistance (specifically test any parameter to have matched in auto test flow
Set), test result is transmitted to by host computer by USB port, and according to the configuring condition of process in automatic test, determine dry in next step
What.Programmable power supply is mainly used for measuring the parameters such as voltage value, current value, the resistance value of circuit-under-test plate.
NI data collecting card: the analog voltage value and output digital output modul signal of acquisition circuit-under-test plate, if automatically
The module is configured in testing process, host computer will be sent to NI data collecting card by USB port and be ordered after the step is arrived in test
It enables, NI data collecting card can be done and read corresponding ports voltage, corresponding ports output high level/low level, detection present port
Level state (high level/low level), change capture card have 16 road analog inputs detection and 24 way switch amount I/O port (arbitrary ends
Mouth can arbitrarily be configured to input port or delivery outlet).NI data collecting card is mainly used for the auxiliary mould in testing jig special
The control of switching plate amount and the analog quantity voltage output of acquisition circuit-under-test plate.
Programmable oscilloscope: for testing the waveform of coherent signal, if being configured with the module in auto test flow, work as test
Host computer will send order to programmable oscilloscope by USB port and read the waveform state that current oscillograph is tested after to the step
Parameter.Programmable oscilloscope be mainly used for measuring the amplitude of circuit-under-test plate output signal, frequency, Wen Bo, rising edge, failing edge,
The series of parameters such as high level, low level.
Program-control electronic load: as the load of circuit-under-test plate, rated current is pulled out, if being configured in auto test flow
The module, host computer will be sent to program-control electronic load by USB port and be ordered after the step is arrived in test, and setting program-controlled electronic is negative
The current value for needing to pull out is carried, the currently practical current value measured is read, reads the currently practical voltage value measured.It is program-controlled
Electronic load is mainly used for measuring the output voltage, excessively electric when the floating voltage of power supply class circuit board, band load voltage, rated current
Stream, overvoltage, the measurement of short circuit current and the measurement of the discharge test parameter to battery.
Program-controlled light power meter: for testing the transmitting optical power of circuit-under-test plate optical device, if matching in auto test flow
The module is set, host computer will be sent to program-controlled light power meter by USB port and be ordered after the step is arrived in test, read current light
The transmitting optical power value that device measures.Program-controlled light power meter is mainly used for measuring the hair of the transmission circuit-under-test plate optical device containing optical fiber
Penetrate optical power value.
Programmable signal generator: signal source needed for circuit-under-test plate is provided, if being configured with the mould in auto test flow
Block, host computer will be sent to programmable signal generator by USB port and be ordered after the step is arrived in test, control program control signal
Device export different amplitudes, different frequency waveform such as: square wave, triangular wave, sine wave waveform.Programmable signal generator is mainly used
In the external drive signal to circuit-under-test plate offer standard.
USBCAN signal adapter: for testing CAN communication, if being configured with the module in auto test flow, work as test
Host computer will be sent to USBCAN signal adapter by USB port and be ordered after to the step, and USBCAN signal adapter will receive
To order circuit-under-test plate is sent to by CAN bus, after circuit-under-test plate receives order, return to the number appointed in advance
According to, then pass through USBCAN signal adapter and finally pass host computer back, just whether host computer judge CAN communication according to the data of return
Often.USBCAN signal adapter is mainly used for testing the CAN bus communication test of the tested electric circuit board containing CAN communication.
Switching Power Supply: for the accessory power supply of general-utility test platform, other power supply for electrical equipment are given, Switching Power Supply is without upper
Machine configuration, platform just have always output after powering on, output voltage grade has tri- kinds of DC5V, DC12V, DC24V, are test platform
Accessory power supply.Switching Power Supply is mainly used for the tool circuit plate power supply in testing jig special.
The driving and configuration of above each module can arbitrarily intert and repeatedly configure different parameters value, and host computer will be according to user
Configuration flow drive hardware device to read parameter and the storage of measurement automatically one by one.
Since host computer needs to control and count with backman's loading board inside dedicated testing platform during the test
It is communicated using RS485 bus communication mode with host computer according to interaction, therefore in the present invention, real-time control, backman's loading board
Master controller uses LPC1788, and RS485 communication chip uses MAX3082, and specific boards schematic diagram is as shown in Figure 4.
Be related to the test containing optical-fibre communications circuit-under-test plate in the present invention, thus the transmitting optical power of optical device be must
Survey project, since the transmitting terminal of optical device need to be respectively connected to light power meter (test transmitting optical power) and another receiving device
Receiving end (test communication state), therefore 2 tunnel optical paths are switched over using optical splitter in the present invention, shown in Fig. 5.The signal
Control terminal DI has the switching value of IN data collecting card to provide.
It may require that in entire test process and be shorted some signal or have the case where instrument and equipment multiplexing, in order to avoid mutual
Between interference, therefore placed relay board in testing jig special, be used for switching signal.Relay board shares 20 pairs
Double relay compositions closed are opened, circuit is as shown in Figure 6.It is upper by RS485 bus communication between the relay board and host computer
Machine can control the movement of any group of relay.The control chip of the relay board uses STC15F2K60S2, as shown in fig. 7,
RS485 communication chip uses MAX3082, as shown in Figure 8.
Universal interface board is mainly used for the connection of signal between general-utility test platform and testing jig special, between use band
The cable connection of DB9, DB37, DB50 plug (signal between testing jig special and circuit-under-test plate is connected using probe).
In the present invention, the electrical connection between signal and interface board inside general-utility test platform uses 5.08 solder terminals, the other end
Using the welding socket of DB9, DB37, DB50, for connecting corresponding cable plug, circuit diagram is as shown in Figure 9.
The equipment wiring of the multifunction circuit board automatic test equipment is as follows:
General-utility test platform exports 4 plugs altogether and docks with testing jig special, is respectively as follows:
Heavy-duty connector (16 core): the biggish signals of some electric currents such as power supply, load are mainly connected.
DB9 socket: the input signal of connection No. 2 oscillographs.
DB37 socket: the output of 16 tunnel analog signals of connection and No. 2 signal generators.
DB50 socket: the output of connection switch amount and bus output.
After taking a new boards, first it is to be understood that its function and relevant test point and parameter, are then surveyed
The configuration of process is tried, testing process need to only be configured once, then be saved to server standby subsequent calls.If a certain circuit board
Testing process be configured and be stored in server, there is no need to carry out process configuration again.It is first turned on host computer test
Software inputs username and password according to prompt, clicks " starting to test " button, scans production task list two dimensional code, selection life
Process is produced, click OK button enters test interface, then scans the two dimensional code that circuit-under-test plate is pasted above, press " really
It is fixed " button, start automatic test, remaining Work machine is automatically performed, as long as going down to have tested the electricity of completion after the completion of to be tested
Road plate.Then the circuit-under-test plate that do not survey is taken, barcode scanning is pressed " determination " button and is tested, so circulation is gone down, until
All circuit-under-test plate tests are completed.Test result can automatic or manual be uploaded to server.
The present invention also provides a kind of multifunction circuit board automatic test approach, are tested automatically using above-mentioned multifunction circuit board
System includes the following steps:
One, the testing process and test data of circuit-under-test plate are configured by host computer；
Two, the test fixture for selecting circuit-under-test plate, circuit-under-test plate is fixed in test fixture, and is docked upper
Machine；
Three, the two dimensional code on circuit-under-test plate is scanned by two-dimensional code scanning rifle；
Four, host computer is to the functional test one by one in order of circuit-under-test plate, and host computer real-time display is tested in test process
The test mode of circuit board, testing progress, test passes item and nonconformance measured parameter value；
Five, after the completion of test the integrated testability as a result, prompt simultaneously of prompt circuit-under-test plate whether upload test result or
It is directly automatic to upload test result, complete the test of circuit-under-test plate.
Citing is illustrated below.The example for my company a general purpose instrument circuit board, it is desirable that test item and each
The test passes standard of project is as shown in table 1:
Table 1
If the circuit board is to test for the first time, it is necessary first to testing process is configured, illustrates the parameter needed to configure below, according to
Test function is configured following testing procedure by the testing requirement of table 1:
Step 1: initialization NI data collecting card, all I/O ports are high level output.
Step 2: configuration programmable power supply channel 1, output voltage 9V export electric current < 30mA.
Step 3: configuration order sends current value (i.e. completion 1 step 1) of table that programmable power supply is read to host computer.
Step 4: the P0.1 of configuration NI data collecting card I/O port exports low level.
Step 5: configuration delay function, be delayed 500mS.
Step 6: configuration NI data collecting card I/O port P0.1 output high level (step 3-5 analogue-key is pressed to be decontroled again,
It controls offline programmer and downloads program, is i.e. completion 1 step 2) of table.
Step 7: configuration delay function, delay 10S (just download program, do not do any operation) at this time.
Step 8: invocation step 2, step 3 process (electric current after the completion of check problem downloading, i.e. completion 1 step 3) of table.
Step 9: acceptability limit (5 ± 0.2) V of NI data collecting card AI0 channel voltage acquisition is configured by host computer, and
Result is back to host computer (completing the voltage acquisition of 1 step 4 measuring point 1 of table) by the voltage value for acquiring the channel.
Step 10: acceptability limit (- 5 ± 0.2) V of NI data collecting card AI1 channel voltage acquisition is configured by host computer,
And the voltage value in the channel is acquired, result is back to host computer (completing the voltage acquisition of 1 step 4 measuring point 2 of table).
Step 11: the acceptability limit (3.2 ± 0.2) of NI data collecting card AI2 channel voltage acquisition is configured by host computer
V, and the voltage value in the channel is acquired, result is back to host computer (completing the voltage acquisition of 1 step 4 measuring point 3 of table).
Step 12: being configured, called RS485 module (parameters such as communications protocol, returned data format), and match by host computer
Acceptability limit (9 ± 0.5) V for setting voltage value sends the order for reading supply voltage value to circuit-under-test plate, is sentenced according to return value
It is disconnected whether qualified (voltage for completing 1 step 5 of table reads judgement).
Step 13: being configured, called RS485 module (parameters such as communications protocol, returned data format), and match by host computer
Acceptability limit (20 ± 2) V for setting voltage value sends the order for reading temperature value to circuit-under-test plate, is according to return value judgement
No qualified (temperature for completing 1 step 5 of table reads judgement).
Step 14: configuring programmable oscilloscope in step 12-13 test process, and configure the acceptability limit of voltage peak-to-peak value
(2-12) V reads the peak-to-peak value in communication process (peak-to-peak value for completing 1 step 5 of table reads judgement).
Step 15: the acceptability limit (3.2 ± 0.2) of NI data collecting card AI3 channel voltage acquisition is configured by host computer
V, host computer are sent to circuit-under-test plate by RS485 bus and are ordered, and control circuit-under-test switching plate amount mouth exports high level, number
Current voltage value is acquired according to the channel capture card AI3, result is back to host computer (i.e. completion 1 step 6 switching value high level of table
Voltage acquisition).
Step 16: acceptability limit (0 ± 0.2) V of NI data collecting card AI3 channel voltage acquisition is configured by host computer,
Host computer is sent to circuit-under-test plate by RS485 bus and is ordered, and control circuit-under-test switching plate amount mouth exports low level, data
The channel capture card AI3 acquires current voltage value, and result is back to host computer (i.e. 1 step 6 switching value low level electricity of completion table
Pressure acquisition).
Step 17: acceptability limit (6 ± 0.1) V of NI data collecting card AI4 channel voltage acquisition is configured by host computer,
Host computer is sent to circuit-under-test plate by RS485 bus and is ordered, and control circuit-under-test plate acoustic alarm mouth exports high level, output
Voltage exports after working plate a quarter partial pressure, the voltage value after the current partial pressure of the channel data collecting card AI4 acquisition, by result
It is back to host computer (i.e. completion 1 step 7 acoustic alarm low level voltage of table acquisition).
Step 18: acceptability limit (0 ± 0.1) V of NI data collecting card AI4 channel voltage acquisition is configured by host computer,
Host computer is sent to circuit-under-test plate by RS485 bus and is ordered, and control circuit-under-test plate acoustic alarm mouth exports low level, output
Voltage exports after working plate a quarter partial pressure, the voltage value after the current partial pressure of the channel data collecting card AI4 acquisition, by result
It is back to host computer (i.e. completion 1 step 7 acoustic alarm low level voltage of table acquisition).
Step 19: the acceptability limit (3.3 ± 0.1) of NI data collecting card AI5 channel voltage acquisition is configured by host computer
V, host computer are sent to circuit-under-test plate by RS485 bus and are ordered, and control circuit-under-test plate light alarm mouth 1 exports high level,
The channel data collecting card AI5 acquires current voltage value, and result is back to host computer (the i.e. high electricity of completion 1 step 7 light of table alarm 1
Flat voltage acquisition).
Step 20: acceptability limit (0 ± 0.1) V of NI data collecting card AI5 channel voltage acquisition is configured by host computer,
Host computer is sent to circuit-under-test plate by RS485 bus and is ordered, and control circuit-under-test plate light alarm mouth 1 exports low level, number
Current voltage value is acquired according to the channel capture card AI5, result is back to host computer (i.e. 1 low level of completion 1 step 7 light of table alarm
Voltage acquisition).
Step 21: the acceptability limit (3.3 ± 0.1) of NI data collecting card AI6 channel voltage acquisition is configured by host computer
V, host computer are sent to circuit-under-test plate by RS485 bus and are ordered, and control circuit-under-test plate light alarm mouth 2 exports high level,
The channel data collecting card AI6 acquires current voltage value, and result is back to host computer (the i.e. high electricity of completion 1 step 7 light of table alarm 2
Flat voltage acquisition).
Step 22: acceptability limit (0 ± 0.1) V of NI data collecting card AI6 channel voltage acquisition is configured by host computer,
Host computer is sent to circuit-under-test plate by RS485 bus and is ordered, and control circuit-under-test plate light alarm mouth 2 exports low level, number
Current voltage value is acquired according to the channel capture card AI6, result is back to host computer (i.e. 2 low levels of completion 1 step 7 light of table alarm
Voltage acquisition).
Step 23: being configured by host computer, so that signal generator channel 1 exports 0V voltage, and configure acceptability limit (0
± 0.1) V host computer calling RS485 communication module, the voltage value of reading circuit-under-test plate pressure voltage acquisition port, and according to
The criterion of acceptability range of configuration voluntarily judges whether qualified (i.e. completion 1 step 8 pressure point of zero voltage of table acquisition).
Step 24: being configured by host computer, so that signal generator channel 1 exports 1.5V voltage, and configure acceptability limit
(1.5 ± 0.1) V host computer calls RS485 communication module, reads the voltage value of circuit-under-test plate pressure voltage acquisition port, and
According to the criterion of acceptability range of configuration, voluntarily judge whether qualified (i.e. completion 1 step 8 pressure voltage linear point of table acquisition).
Step 25: host computer calls RS485 communication module, and the control infrared transmitting portion of working plate is sent out by infrared transmitting tube
Remote control command is sent, so that entered function 1 is (red in circuit-under-test plate program after the infrared receiving tube of circuit-under-test plate receives order
Outer reception mark position position).Host computer calls RS485 communication module, reads the current infrared receiver flag bit of circuit-under-test plate
Current state voluntarily judges qualified or not (completing the test of 1 step 9 infrared receiver function of table).
Step 26: after testing process goes to the step, host computer has been tested out the circuit-under-test plate is corresponding
Parameter is uploaded in server by network.
So far, the auto test flow of this circuit-under-test plate, which configures, completes, which need to only configure 1 time, as long as the quilt
Slowdown monitoring circuit plate test parameter is constant, and there is no need to change process.It completes to need to take a text to rigid configured process with postponing
Part name, and according to software prompt, by configuration flow upload server, in case follow-up test is called.
It is completed when the testing process of circuit-under-test plate configures, and after upload server, so that it may by scanning production task list
Configured auto test flow is (on condition that two dimensional code above production task list before the mode of two dimensional code above directly recalls
Corresponding file name is consistent with the testing process file name being saved).Pass through the two dimension of face paste on scanning circuit-under-test plate
Code label marks current circuit board, and the series of parameters measured below will be stored in the corresponding ID number of the two dimensional code.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.
Claims (7)
1. a kind of multifunction circuit board automatic test equipment, including industrial all-in-one machine, test macro and test fixture, the industry
Testing integrated machine is connect by test macro with test fixture, it is characterised in that: the test fixture include workbench, needle bed and
Top hold-down mechanism is fixed with several pilot pins on the workbench, and the needle bed is arranged in pilot pin, and the top compresses
Mechanism is correspondingly arranged above needle bed, including the first in command, the first guide rod and backman's loading board, and the first in command passes through first
Guide rod is connect with backman's loading board, and the first in command can drive backman's loading board to rise or fall to compress or unclamp the electricity on needle bed
Road plate.
2. multifunction circuit board automatic test equipment according to claim 1, it is characterised in that: the test fixture is also wrapped
Include side positioning mechanism, the side positioning mechanism includes second handle, the second guide rod and side plate, and the second handle passes through the
Two guide rods are connect with side plate, and second handle can drive side plate to move left and right to position the board side on needle bed by the second guide rod
Portion.
3. multifunction circuit board automatic test equipment according to claim 1, it is characterised in that: the multifunction circuit board
Automatic test equipment further includes two-dimensional code scanning rifle, and the two-dimensional code scanning rifle is correspondingly arranged on needle bed by movable support
Side.
4. multifunction circuit board automatic test equipment according to claim 1, it is characterised in that: opened up on the workbench
There are multiple connecting holes, the pilot pin is detachably connected with connecting hole.
5. a kind of multifunction circuit board Auto-Test System, using multifunction circuit board according to any one of claims 1-4
Automatic test equipment, it is characterised in that: including host computer and the server being connect with host computer, two-dimensional code scanning rifle, switch electricity
Source, programmable power supply, USBCAN signal adapter, programmable signal generator, program-controlled light power meter, NI data collecting card, program-controlled electric
Sub- load, programmable oscilloscope, program-controlled multimeter,
The server is for storing test data, being edited, being inquired, being screened and being compared；
The two-dimensional code scanning rifle is used to scan the two dimensional code of circuit-under-test plate, identifies circuit-under-test plate information；
The Switching Power Supply is used to provide power supply for test macro；
The programmable power supply is used to provide required test voltage for circuit-under-test plate, while reading the work electricity of circuit-under-test plate
Stream；
The USBCAN signal adapter is for testing CAN communication；
The programmable signal generator is for signal source needed for providing circuit-under-test plate；
The program-controlled light power meter is used to test the transmitting optical power of circuit-under-test plate；
The NI data collecting card is used to acquire the analog voltage value and output digital output modul signal of circuit-under-test plate；
Load of the program-control electronic load as circuit-under-test plate pulls out rated current；
The programmable oscilloscope is used to test the waveform of coherent signal；
The program-controlled multimeter is used to measure the basic parameter of circuit-under-test plate.
6. a kind of multifunction circuit board automatic test approach, is tested automatically using multifunction circuit board as claimed in claim 5
System, which comprises the steps of:
One, the testing process and test data of circuit-under-test plate are configured by host computer；
Two, the test fixture for selecting circuit-under-test plate, circuit-under-test plate is fixed in test fixture, and dock host computer；
Three, the two dimensional code on circuit-under-test plate is scanned by two-dimensional code scanning rifle；
Four, host computer is to the functional test one by one in order of circuit-under-test plate, host computer real-time display circuit-under-test in test process
The test mode of plate, testing progress, test passes item and nonconformance measured parameter value；
Five, the integrated testability of circuit-under-test plate is prompted after the completion of test as a result, prompting whether to upload test result or direct simultaneously
It is automatic to upload test result, complete the test of circuit-under-test plate.
7. multifunction circuit board automatic test approach according to claim 6, it is characterised in that: in step 1, configuration
Test data includes output voltage, output electric current, delay function, voltage acquisition range, voltage acceptability limit and voltage peak-to-peak value.
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| CN201910298052.4A CN109917276A (en) | 2019-04-15 | 2019-04-15 | Multifunction circuit board automatic test equipment, test macro and test method |
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| CN113219940A (en) * | 2021-04-08 | 2021-08-06 | 新风光电子科技股份有限公司 | FCT test system with one computer controlling multiple test stations and control method |
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| CN113655322A (en) * | 2021-08-30 | 2021-11-16 | 重庆盟讯电子科技有限公司 | FCT automatic test platform |
| CN114088991A (en) * | 2021-11-08 | 2022-02-25 | 广东乐心医疗电子股份有限公司 | Circuit board testing method, device and system |
| CN114200265A (en) * | 2021-12-09 | 2022-03-18 | 福建星云电子股份有限公司 | Battery module low-voltage insulation testing device |
| CN114236399A (en) * | 2021-12-09 | 2022-03-25 | 福建星云电子股份有限公司 | Battery module nickel piece test portion dress |
| CN114252796A (en) * | 2021-12-09 | 2022-03-29 | 福建星云电子股份有限公司 | Battery module low-voltage insulation test part |
| CN116522878A (en) * | 2023-07-04 | 2023-08-01 | 成都领目科技有限公司 | Method, device and medium for maintaining consistency import report of oscilloscope test data |
| CN116522878B (en) * | 2023-07-04 | 2023-10-24 | 成都领目科技有限公司 | Method, device and medium for maintaining consistency import report of oscilloscope test data |
| CN117113914A (en) * | 2023-10-25 | 2023-11-24 | 中国移动紫金(江苏)创新研究院有限公司 | Circuit board reliability prediction method, system and storage medium based on digital twin |
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