TWI383165B - System and method of testing and repairing circuit boards online - Google Patents

Description

Circuit board online test and maintenance system and method

The invention relates to a circuit board online test and maintenance system and method, in particular to an ICT (In-Circuit Tester) online test information instant automatic transmission and paperless maintenance system and method.

ICT online test is the most commonly used circuit board test method in the current production process. It is widely used in the electronics manufacturing industry. Its main purpose is to check the opening and short circuit of individual components and circuit networks on the circuit board. , fault location and other characteristics. By testing the board online, you can quickly check for defective components and manufacturing defects on the board, as well as provide diagnostic maintenance reports.

In order to facilitate control, the test information of the online test of the product should be uploaded to the SFC (Shop Floor Control) system for immediate control of the production of the product, and the detailed information of the tested product can be traced by the SFC system. The conventional ICT online test information uploading and repairing system includes an online testing machine 10, a data acquisition device 11 for collecting test information, a barcode scanner 12 connected to the data acquisition device 11, an SFC server 13, and a storage test data. The data access module 14 and the like further comprise a printer 15 connected to the online testing machine, and the printer 15 can print the bad information strip 16 of the bad circuit board and send it to the repair station 17 (As shown in the first figure), the online test machine is composed of a test platen 301, a test needle bed 302, a test circuit 303, a test end computer 304, etc. (as shown in the second figure), wherein the data acquirer 11 and the SFC The server 13 and the data access module 14 are connected by a network. The data acquirer 11 can be collected offline Test data generated by the online test machine 10. The system flow is as follows: after all the products are tested by the online testing machine 10, the test information of the circuit board is downloaded to the data acquisition device 11 (downloaded by using the download line), and then the tester manually puts the barcode of the tested circuit board. Scanning into the data acquirer 11 and uploading the test data collected by the data acquirer 11 to the SFC server 13 through the network. When there is a bad circuit board, input a bad code and a bar code of the bad circuit board for statistical purposes. The defective report, and the defective information strip 16 is printed by the printer 15, the repairer of the repair station 17 repairs the defective circuit board by the bad information strip 16.

However, the aforementioned test and maintenance system has the following defects: Firstly, because the data acquirer collects test data offline, the time for uploading test information is delayed, which brings inconvenience to production control; secondly, the test report and the bad report are manually counted, resulting in data. Inaccurate, can not truly reflect the production status of the production line; in addition, when the maintenance staff repairs the bad circuit board by the bad paper strip, the paper strip is easy to be confused or lost, which causes inconvenience to the maintenance.

In view of the deficiencies of the prior art, it is necessary to provide an online automatic uploading and paperless maintenance system and method for online test information of the circuit board.

A circuit board online test and maintenance system for testing and repairing a circuit board having a bar code, comprising: an online test machine for testing a circuit board to be tested and generating test data; a shop control server, and the An online test machine is connected, the shop control server includes a function module for collecting, transmitting and processing test data generated by the online test machine; and a maintenance end computer connected to the shop floor control server for displaying bad Specific bad information on the board to repair bad boards.

The invention also discloses a method for online testing and maintenance of a circuit board, the method comprising the following steps: an online testing machine testing the circuit board to be tested and generating test data; a shop control server collecting, transmitting and processing the network through the network The test data generated by the test machine; a maintenance computer receives and displays the specific bad information of the bad circuit board transmitted by the shop control server through the network; and performs poor circuit board repair according to the specific bad information.

The online test information real-time automatic transmission and paperless maintenance system and method of the invention are compared with the prior art technology, the data acquisition device is omitted, and the data acquisition sub-module and the data transmission sub-module developed in the workshop control server are directly used. And the data processing sub-module automatically uploads test data to the shop floor control server through the network, which makes the test and maintenance system more automated, improves the efficiency of testing and maintenance, and reduces the cost. In addition, this online test information instant automatic upload and paperless maintenance system uses the maintenance terminal computer to display the bad information of the bad circuit board in order to repair the bad circuit board, no need to print bad paper strips, save a lot of printing paper, further reduce the cost .

The third figure shows a hardware structure diagram of a circuit board online test and maintenance system according to a preferred embodiment of the present invention. The circuit board online test and maintenance system includes: an online test machine 30, which includes a test press plate. 301, a test needle bed 302, a test circuit 303, a test end computer 304 and a code scanner 305 (the hardware part of the ICT, as shown in the second figure), the test end computer is equipped with ICT test program software ( Software part of ICT) An SFC server 31 is connected to the test end computer of the online test machine 30 via a network 20. The SFC server 31 includes a functional module for acquiring, transmitting, and processing test data generated by the online test machine 30. The module has a data acquisition sub-module, a data transmission sub-module and a data processing sub-module (as shown in the fourth figure), so the circuit board online test system can save the data acquirer and utilize the SFC server 31. The data acquisition sub-module collects the test data generated by the online test machine 30, and the test data can be uploaded to the SFC server 31 by the network 20, processed by the SFC server 31, and then transmitted back to the online The test end computer 304 of the test machine 30 displays that the test worker can judge whether the circuit board under test is defective or not by the information of the test end computer 304; a data access module 32, which is connected to the SFC server 31 by the The network 20 is connected, and the test data is processed by the SFC server 31 and stored in the data access module 32 for system call; at least one maintenance computer 33, each of which is borrowed from the SFC server 31. Connected by the network 20 for resource sharing, which can display specific bad information of the bad circuit board; and a code scanner 34 connected to the maintenance computer 33, the barcode scanner 34 can barcode the bad circuit board Read in the maintenance computer 33 A repair station repairs the defective circuit board according to the bad information displayed by the maintenance terminal computer 33.

The fifth figure shows a flow chart of the online test and maintenance system of the circuit board of the present invention, and the process includes the following steps: Before the test, the barcode of the circuit board to be tested is scanned by the barcode scanner 305 of the online testing machine 30 (step S200). After the scanning, the test terminal computer 304 obtains static test data by identifying the barcode of the circuit board, and the static test data includes the machine number of the online test machine 30, the fixture code, the product item number, and the test employee number. The static test data can be transmitted instantaneously through the network 20, and the transmission process includes steps (as shown in FIG. 6): a. The static test data is transmitted from the test end computer 304 to the SFC servo through the network 20. The SFC server 30 collects and processes the static test data; c. the static test data is processed by the SFC server 31 and then transmitted back to the test end computer 304; d. The static test data is stored to the data Access module 32.

The board to be tested is tested (step S201). During the test, the components to be tested on the circuit board are first connected to the test circuit 303 of the online test machine 30, and according to the setting of the software, the corresponding components are selected and tested, for example, the resistance value of the resistor is tested, and the capacitance is tested. Test its capacitance, test its inductance for the inductor, and so on. During the test, the test end computer 304 generates dynamic test data, which includes the product serial number, the test time, the test mark bit, etc., and the dynamic test data can be transmitted by the network 20, and the transmission process includes Step (as shown in the sixth figure): a. The dynamic test data is transmitted from the test end computer 304 to the SFC server 31 via the network 20; b. The SFC server 31 collects and processes the transmission. Dynamic test data; c. The dynamic test data is processed by the SFC server 31 and transmitted back to the test end computer 304; d. The dynamic test data is stored in the data access module 32.

According to the test data fed back to the test end computer 304, it is judged whether the circuit board is Poor (step S202); if the circuit board passes the online test, the circuit board can enter the next production step, such as assembly into a finished product or perform functional test (step S203); if it is a bad circuit board, it is sent to the repair station Waiting for repair (step S204); using the barcode scanner 34 to scan the barcode of the bad circuit board before the maintenance, the specific bad information of the bad circuit board is displayed by the computer 33 of the maintenance end (step S205); repairing according to the bad information The defective circuit board (step S206), after the repair, returns to step S201 to perform online test on the repaired circuit board.

Among them, the SFC server processing test data (static data and dynamic data) includes the following steps: 1. Identify the test mark bit; 2. Determine the data transfer format; 3. Convert the test code into a test file, if the tested circuit board is qualified The feedback back to the online test machine 30 file contains Pass information; if it is a bad circuit board, the file returned to the online test machine 30 contains Failure information, and the specific bad information (such as component failure) , open circuit or short circuit, etc.); 4. Generate various test reports. The test report includes the number of tested boards and the pass rate in the selected time period to facilitate the control and control of the control department.

It can be seen from the above that the online test and maintenance system of the circuit board of the present invention automatically uploads the test data to the SFC server through the network, and realizes the paperlessness of the bad circuit board by using the characteristics of the test data containing the bad information. service.

In summary, the present invention has indeed met the requirements of the invention patent, and has filed a patent application according to law. However, the above description is only the preferred embodiment of the present invention, and equivalent modifications or variations made by those skilled in the art of the present invention should be included in the following claims.

20‧‧‧Network

30‧‧‧Online testing machine

31‧‧‧SFC Server

32‧‧‧ Data Access Module

33‧‧‧Maintenance computer

34‧‧‧Barcode Scanner

35‧‧‧Maintenance station

301‧‧‧Test platen

302‧‧‧Test needle bed

303‧‧‧Test circuit

304‧‧‧Test computer

305‧‧‧Barcode Scanner

The first figure is a hardware structure diagram of a conventional technical circuit board online test and maintenance system.

The second picture is a simple structure diagram of the online test machine.

The third figure is a hardware structure diagram of an online test and maintenance system for a circuit board according to a preferred embodiment of the present invention.

The fourth picture is a detailed diagram of the SFC server.

The fifth figure is a flow chart of an online test and maintenance system for a circuit board according to a preferred embodiment of the present invention.

Figure 6 is a flow chart showing the test data transmission of the online test and maintenance system of the circuit board according to the preferred embodiment of the present invention.

20‧‧‧Network

30‧‧‧Online testing machine

31‧‧‧SFC Server

32‧‧‧ Data Access Module

33‧‧‧Maintenance computer

34‧‧‧Barcode Scanner

35‧‧‧Maintenance station

Claims (6)

A circuit board online test and maintenance system for testing and repairing a circuit board having a bar code, comprising: an online test machine for testing a circuit board to be tested and generating preliminary test data, the online test machine including a test a workstation control server connected to the online test machine, the shop control server includes a function module for collecting and processing the preliminary test data, the function module converting the preliminary test data into a test And returning the test file to the test terminal computer, the test file includes information that the test board is tested or failed; and a maintenance computer connected to the shop control server, the maintenance computer When the test board to be tested fails, the corresponding test file is displayed to repair the circuit board to be tested. The circuit board online test and maintenance system of claim 1, further comprising a barcode scanner for scanning a barcode of the circuit board to be tested into the computer of the maintenance terminal. The circuit board online test and maintenance system of claim 1, further comprising a data access module for storing circuit board test data, which is connected to the shop floor control server via a network. For example, the online test and maintenance system of the circuit board described in claim 1, wherein the test terminal computer is connected to the workshop control server through a network, and the shop control server is also connected to the maintenance computer by the network. connection. A method for online testing and repair of a circuit board includes the following steps: an online test machine tests a circuit board to be tested and generates preliminary test data; and a shop control server collects the preliminary test data through the network; The shop control server converts the preliminary test data into a test file, the test file includes information on whether the tested circuit board is qualified; the shop control server returns the test file to the online test machine through the network; If the tested circuit board fails the test, transmitting the test file of the tested computer to a maintenance computer; the maintenance computer displays the test file; repairing the tested circuit board according to the test file; and if the If the test board is qualified, it will enter the next production stage. The method for online testing and repairing a circuit board according to claim 5, wherein the step of the workshop control server processing the test data comprises the steps of: identifying a test mark bit; determining a data transfer format; and converting the test code into a text. Format; and generate various test reports.