CN102854452A - Printed circuit board assembly (PCBA) function testing device and testing method thereof - Google Patents
Printed circuit board assembly (PCBA) function testing device and testing method thereof Download PDFInfo
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- CN102854452A CN102854452A CN2012102818839A CN201210281883A CN102854452A CN 102854452 A CN102854452 A CN 102854452A CN 2012102818839 A CN2012102818839 A CN 2012102818839A CN 201210281883 A CN201210281883 A CN 201210281883A CN 102854452 A CN102854452 A CN 102854452A
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Abstract
Provided are a printed circuit board assembly (PCBA) function testing device and a testing method thereof. The device is mainly composed of a high-precision digital universal meter, a changeover mechanism and a function detecting mechanism. The changeover mechanism comprises a power port and a switch. The function detecting mechanism comprises a current testing interface, an external relay testing interface, a communication interface connected with a personal computer (PC), a keyboard key testing interface, a built-in relay testing interface and a key testing interface. The changeover mechanism is respectively connected with a plurality of relays in the function detecting mechanism and connected with the current testing interface, the external relay testing interface, the communication interface connected with the PC, the keyboard key testing interface, the built-in relay testing interface and the key testing interface so as to achieve (1) multi-current testing, (2) built-in relay testing, (3) external relay testing, (4) key switch testing and (5) keyboard key testing on the PCBA respectively.
Description
Technical field
What the present invention relates to is a kind of method of testing of PCBA device for testing functions, specifically whether normally a kind of proving installation and method of testing of testing the upper electric current of PCBA, built-in relay, external relay, keyswitch and keyboard belong to upper each function of testing authentication PCBA qualified proving installation and method of testing.
Background technology
At present, the single channel testing current can directly be tested with multimeter, but the Multi-path electricity current test, and that just seems unable to do what one wishes for common multimeter; During the interior external relay of test, all be test after PCBA becomes product, this causes repair rate too high; When testing various buttons, keyboard, all be directly manually to press, the naked eyes judgement, this just easily produces erroneous judgement, fails to judge.In sum, the upper function of PCBA is relatively many, and all is independent test, and these are many and numerous and diverse with regard to causing Simplified Test Equipment, be not suitable for producing and the management of proving installation, and operating personnel is more, easily produce erroneous judgement, fail to judge, and bring hidden danger of quality.
Summary of the invention
The object of the invention is to overcome the deficiency that prior art exists, and provide a kind of each function that can test easily and fast on the PCBA, reduce and simplify each easy device, reduce and manually judge by accident, fail to judge, the method for testing of integrated each functional test PCBA device for testing functions.
The objective of the invention is to finish by following technical solution, PCBA device for testing functions of the present invention, it is mainly by a high-precision digital multimeter, and a changeover mechanism and a Function detection mechanism form, and described changeover mechanism comprises power interface and switch; Described Function detection mechanism comprises the testing current interface, the external relay test interface, and with the communication interface of PC, keyboard test interface, built-in relay test interface and key testing interface; Described changeover mechanism respectively with Function detection mechanism in built-in a plurality of little relay join, and the little relay by separately respectively with described testing current interface, the external relay test interface, communication interface with PC, the keyboard test interface, built-in relay test interface and key testing interface are connected.
A kind of utilization is the method for PCBA device for testing functions realization PCBA functional test as mentioned above, and the method comprises:
1) multiple current of PCBA is tested, by compression bonding apparatus the AC and DC test point on the PCBA is connected in the channel switching mechanism, host computer sends corresponding instruction according to the test point type on the PCBA testing scheme and comes the switch test passage to channel switching mechanism, after the passage successful switch, host computer reads the test data of this passage, this pathway closure is finished in test, realizes a crimping, PCBA alternating current-direct current test point full-automatic testing;
2) to the test of the upper built-in relay of PCBA be, it mainly is the quality of the upper built-in relay of test PCBA, specifically: the relay contact interface on the PCBA is connected in the Function detection mechanism by changeover mechanism, when the built-in relay adhesive on the host computer order PCBA, functional test mechanism detects the contacts status of the upper built-in relay of PCBA and reports host computer, and host computer is according to the quality of state and then the upper built-in relay of judgement PCBA of contact;
3) to the test of the upper external relay of PCBA be, it also is the quality of the external relay on the test PCBA, be specially: the voltage according to the upper external relay interface of PCBA is selected suitable relay, by changeover mechanism the external relay control interface on the PCBA is connected to selected relay coil two ends, the inside, contact of relay has been connected in the Function detection mechanism, the upper external relay adhesive of host computer order PCBA or break function testing agency detect the state of relay contact and report host computer, and host computer is judged external relay interface quality according to the state of relay contact;
4) to the test of keyswitch be, it is when not welding button on the test PCBA, test its keypress function, concrete grammar is: the button solder joint on the PCBA is connected to the built-in little relay contact two ends of Function detection mechanism by changeover mechanism, control fast break-make of this relay by the host computer instruction, simulate the manually process of button of reality, MPU on the PCBA can record the state of this button, host computer is by the MPU communication on RS485 and the PCBA, read the key-press status of PCBA, and then judge whether the keyswitch function on the PCBA is qualified;
5) be 4*4 keyboard on the PCBA to the test of keyboard, keyboard has solder joint at PCB, concrete method of testing is: the 4*4 keyboard solder joint on the PCBA is connected on 16 little relay contacts in the Function detection mechanism by changeover mechanism, relay adhesive or the artificial button operation of disconnection simulation in the host computer command functions testing agency, MPU on the PCBA can record the state of this button, host computer is by the MPU communication on RS485 and the PCBA, read each key-press status of PCBA, and then judge whether the keyswitch function on the PCBA is qualified.
The function that the present invention can test on the PCBA has all contained basically, has simplified greatly the complicacy of device, has improved the versatility of this device, reduces artificial intervention, makes test result more accurate, and is more objective.
Description of drawings
Fig. 1 is the structural arrangement schematic diagram of device of the present invention.
Fig. 2-the 1st, the circuit theory diagrams one of testing current of the present invention.
Fig. 2-the 2nd, the circuit theory diagrams two of testing current of the present invention.
Fig. 3-the 1st, the circuit theory diagrams one of external relay test of the present invention.
Fig. 3-the 2nd, the circuit theory diagrams two of external relay test of the present invention.
Fig. 3-the 3rd, the circuit theory diagrams three of external relay test of the present invention.
Fig. 3-the 4th, the circuit theory diagrams four of external relay test of the present invention.
Fig. 4-the 1st, the circuit theory diagrams one of keyswitch test of the present invention.
Fig. 4-the 2nd, the circuit theory diagrams two of keyswitch test of the present invention.
Fig. 5-the 1st, the circuit theory diagrams one of built-in relay test of the present invention.
Fig. 5-the 2nd, the circuit theory diagrams two of built-in relay test of the present invention.
Fig. 5-the 3rd, the circuit theory diagrams three of built-in relay test of the present invention.
Fig. 5-the 4th, the circuit theory diagrams four of built-in relay test of the present invention.
Fig. 6 is the circuit theory diagrams of keyboard test of the present invention.
Embodiment
Below in conjunction with accompanying drawing the present invention is done detailed introduction: shown in Figure 1, PCBA device for testing functions of the present invention, it is mainly by a high-precision digital multimeter, and a changeover mechanism and a Function detection mechanism form, and described changeover mechanism comprises power interface and switch 1,2,3; Described Function detection mechanism comprises testing current interface 4,5,12,13, and external relay test interface 6 is with the communication interface 7 of PC, keyboard test interface 8,9, built-in relay test interface 10 and keyswitch test interface 11; Described changeover mechanism respectively with Function detection mechanism in built-in a plurality of little relay join, and the little relay by separately respectively with described testing current interface, the external relay test interface, communication interface with PC, the keyboard test interface, built-in relay test interface and key testing interface are connected.
A kind of utilization is the method for PCBA device for testing functions realization PCBA functional test as mentioned above, and the method comprises:
1) multiple current of PCBA is tested, by compression bonding apparatus the AC and DC test point on the PCBA is connected in the channel switching mechanism, host computer sends corresponding instruction according to the test point type on the PCBA testing scheme and comes the switch test passage to channel switching mechanism, after the passage successful switch, host computer reads the test data of this passage, this pathway closure is finished in test, realizes a crimping, PCBA alternating current-direct current test point full-automatic testing;
2) to the test of the upper built-in relay of PCBA be, it mainly is the quality of the upper built-in relay of test PCBA, specifically: the relay contact interface on the PCBA is connected in the Function detection mechanism by changeover mechanism, when the built-in relay adhesive on the host computer order PCBA, functional test mechanism detects the contacts status of the upper built-in relay of PCBA and reports host computer, and host computer is according to the quality of state and then the upper built-in relay of judgement PCBA of contact;
3) to the test of the upper external relay of PCBA be, it also is the quality of the external relay on the test PCBA, be specially: the voltage according to the upper external relay interface of PCBA is selected suitable relay, by changeover mechanism the external relay control interface on the PCBA is connected to selected relay coil two ends, the inside, contact of relay has been connected in the Function detection mechanism, the upper external relay adhesive of host computer order PCBA or break function testing agency detect the state of relay contact and report host computer, and host computer is judged external relay interface quality according to the state of relay contact;
4) to the test of keyswitch be, it is when not welding button on the test PCBA, test its keypress function, concrete grammar is: the button solder joint on the PCBA is connected to the built-in little relay contact two ends of Function detection mechanism by changeover mechanism, control fast break-make of this relay by the host computer instruction, simulate the manually process of button of reality, MPU on the PCBA can record the state of this button, host computer is by the MPU communication on RS485 and the PCBA, read the key-press status of PCBA, and then judge whether the keyswitch function on the PCBA is qualified;
5) be 4*4 keyboard on the PCBA to the test of keyboard, keyboard has solder joint at PCB, concrete method of testing is: the 4*4 keyboard solder joint on the PCBA is connected on 16 little relay contacts in the Function detection mechanism by changeover mechanism, relay adhesive or the artificial button operation of disconnection simulation in the host computer command functions testing agency, MPU on the PCBA can record the state of this button, host computer is by the MPU communication on RS485 and the PCBA, read each key-press status of PCBA, and then judge whether the keyswitch function on the PCBA is qualified.
Fig. 2-1, Fig. 2-2, switch in turn K1-K8 relay by Single Chip Microcomputer (SCM) program and change current channel, make wherein one the tunnel to be connected with multimeter testing current passage, to reach the testing current purpose.
Fig. 3-1, Fig. 3-2, Fig. 3-3, Fig. 3-4, it is external relay test circuit schematic diagram, and P1-P4 connects the contact of external relay, when the external relay closing of contact disconnects, the corresponding high-low level of OUT_STATE1-OUT_STATE4, and then judged by single-chip microcomputer.
Fig. 4-1, Fig. 4-2, and it is keyswitch testing circuit schematic diagram, disconnect K1 – K4 relay by the Single Chip Microcomputer (SCM) program quick-make and simulate the manually process of button.
Fig. 5-1, Fig. 5-2, Fig. 5-3, Fig. 5-4, it is built-in relay test circuit schematic diagram, and P1_1 – P4_1 connects the contact of built-in relay, when built-in relay contact closure disconnects, the corresponding high-low level of IN_STATE1-IN_STATE4, and then judged by single-chip microcomputer;
Fig. 6, the closing of contact of being switched fast in turn K1 – K16 relay by Single Chip Microcomputer (SCM) program disconnects, and simulates the manually process of button, and 16 buttons on the keyboard are pressed successively fast.
Claims (2)
1. PCBA device for testing functions, it is mainly by a high-precision digital multimeter, and a changeover mechanism and a Function detection mechanism form, and it is characterized in that described changeover mechanism comprises power interface and switch; Described Function detection mechanism comprises the testing current interface, the external relay test interface, and with the communication interface of PC, keyboard test interface, built-in relay test interface and key testing interface; Described changeover mechanism respectively with Function detection mechanism in built-in a plurality of little relay join, and the little relay by separately respectively with described testing current interface, the external relay test interface, communication interface with PC, the keyboard test interface, built-in relay test interface and key testing interface are connected.
2. method of utilizing PCBA device for testing functions as claimed in claim 1 to realize the PCBA functional test, the method comprise that following several aspect is to the test of PCBA:
1) multiple current test: the AC and DC test point on the PCBA is connected in the channel switching mechanism by compression bonding apparatus, host computer sends corresponding instruction according to the test point type on the PCBA testing scheme and comes the switch test passage to channel switching mechanism, after the passage successful switch, host computer reads the test data of this passage, this pathway closure is finished in test, realize a crimping, PCBA alternating current-direct current test point full-automatic testing;
2) test of built-in relay: the relay contact interface on the PCBA is connected in the Function detection mechanism by changeover mechanism, when the built-in relay adhesive on the host computer order PCBA, functional test mechanism detects the contacts status of the upper built-in relay of PCBA and reports host computer, and host computer is according to the quality of state and then the upper built-in relay of judgement PCBA of contact;
3) test of external relay: the voltage according to the upper external relay interface of PCBA is selected suitable relay, by changeover mechanism the external relay control interface on the PCBA is connected to selected relay coil two ends, the inside, contact of relay has been connected in the Function detection mechanism, the upper external relay adhesive of host computer order PCBA or break function testing agency detect the state of relay contact and report host computer, and host computer is judged external relay interface quality according to the state of relay contact;
4) test of keyswitch: the button solder joint on the PCBA is connected to the built-in little relay contact two ends of Function detection mechanism by changeover mechanism, control fast break-make of this relay by the host computer instruction, simulate the manually process of button of reality, MPU on the PCBA can record the state of this button, host computer is by the MPU communication on RS485 and the PCBA, read the key-press status of PCBA, and then judge whether the keyswitch function on the PCBA is qualified;
5) test of keyboard: the 4*4 keyboard solder joint on the PCBA is connected on 16 little relay contacts in the Function detection mechanism by changeover mechanism, relay adhesive or the artificial button operation of disconnection simulation in the host computer command functions testing agency, MPU on the PCBA can record the state of this button, host computer is by the MPU communication on RS485 and the PCBA, read each key-press status of PCBA, and then judge whether the keyswitch function on the PCBA is qualified.
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| CN104464266A (en) * | 2014-12-05 | 2015-03-25 | 深圳市创荣发电子有限公司 | Automatic main control panel testing system with remote controller |
| CN105572507A (en) * | 2016-01-12 | 2016-05-11 | 中国信息安全测评中心 | Automation test circuit and method for key-type equipment |
| CN109239590A (en) * | 2018-08-22 | 2019-01-18 | 中航华东光电有限公司 | Key light guide board measuring method |
| CN110412976A (en) * | 2019-08-28 | 2019-11-05 | 中国农业大学 | A kind of function test system and its test method of electric machine controller PCBA board |
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| CN101334448A (en) * | 2008-05-23 | 2008-12-31 | 深圳市同洲电子股份有限公司 | Test platform and method for testing PC board |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110412976A (en) * | 2019-08-28 | 2019-11-05 | 中国农业大学 | A kind of function test system and its test method of electric machine controller PCBA board |
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| CN102854452B (en) | 2014-12-10 |
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