CN114217209B

CN114217209B - Multi-station PCBA board detection method

Info

Publication number: CN114217209B
Application number: CN202111531642.0A
Authority: CN
Inventors: 林景达; 刘草原; 任康; 刘双春; 魏肃
Original assignee: Xiamen Chipsun Science and Technology Co Ltd
Current assignee: Xiamen Chipsun Science and Technology Co Ltd
Priority date: 2021-12-14
Filing date: 2021-12-14
Publication date: 2023-06-30
Anticipated expiration: 2041-12-14
Also published as: CN114217209A

Abstract

The invention provides a multi-station PCBA board detection method, which adopts a detection tool comprising an upper computer and a lower computer, wherein the upper computer is provided with a plurality of PCBA board test programs, and the test programs comprise test flow steps and preset thresholds of different parameters so as to detect different PCBA boards; the upper computer is provided with a plurality of test data programs corresponding to different test programs respectively so as to record test results corresponding to the test programs; placing PCBA plates to be detected on different stations of a detection tool; and the lower computer timely transmits the detection result data to the upper computer and stores the detection result data in the test database, and compares the measured values of different parameters in the detection result with corresponding preset thresholds, so as to judge whether the PCBA board to be detected on each station meets the regulations.

Description

Multi-station PCBA board detection method

Technical Field

The invention relates to the technical field of PCBA board detection, in particular to a multi-station PCBA board detection method capable of being used for detecting PCBA boards of different types.

Background

PCBA is abbreviated as English Printed Circuit Board +Assemble, and generally refers to the whole process that a PCB blank is subjected to SMT (surface mount technology) loading or DIP (digital information processing) plug-in. PCBA is also referred to as a printed circuit board (also called a printed circuit board or a printed wiring board), and is an important electronic component, a support for electronic components, and a provider for wiring connection of electronic components. The PCBA is welded with a plurality of electronic components, and is taken as one of important components of modern electronic equipment, and the quality of the PCBA directly influences the performance of the product. Therefore, after the completion of the manufacture, the inspection of the PCBA board is an essential step.

PCBA board performance detection mainly detects connection, welding and electrical property test etc. of each components and parts on the PCB board. According to the difference of detection frock or board device, detect the project still can include button break-make condition detection, LED display screen operating condition detection, power supply input, output detection, consumption electric current detection etc.. At present, when PCBA board is tested or detected, main detection modes comprise single board test and jointed board test. In the PCBA board detection process, the multi-station PCBA board test bench or the detection tool is more commonly used, so that the detection efficiency is improved. In the implementation operation, the single board test mode is time-consuming, labor-consuming and low in detection efficiency, and the jointed board test can improve the detection efficiency. However, after the board splicing test is completed, some devices are damaged due to the influence of stress when the board splicing is split or broken, so that abnormal phenomena occur in the subsequent PCBA board mounting machine.

Furthermore, the conventional PCBA board test board or detection tool generally displays bad information or signals of the PCBA board through an LED lamp or a display screen on the detection tool, different test software and hardware are required to be written on the tool aiming at different types of PCBA boards, and the universality of the test software and hardware is poor. In addition, a plurality of stations in the existing multi-station PCBA board testing machine in the market basically test the same type of PCBA board at the same time, and cannot be used for testing different types of PCBA boards or detecting different types of PCBA boards at the same time.

Disclosure of Invention

In order to solve the problems in the detection of the PCBA boards of different types, the invention provides a multi-station PCBA board detection method which can be used for detecting the PCBA boards of different types. For example, different kinds of PCBA boards can be detected by the multi-station PCBA board detection method respectively, or different kinds of PCBA boards can be detected simultaneously.

To achieve at least one of the advantages and other advantages, an embodiment of the present invention provides a multi-station PCBA board inspection method for inspecting different types of PCBA boards. The detection tool (or referred to as a detection device and a testing device) adopted by the multi-station PCBA board detection method comprises an upper computer and a lower computer, and the detection method at least comprises the following steps:

establishing a test program database: setting a plurality of test programs of the PCBA boards on the upper computer, wherein the test programs of the PCBA boards comprise test flow steps and preset thresholds of different parameters so as to detect the PCBA boards of different types;

establishing a test database: setting a plurality of test data programs corresponding to the test programs of the PCBA board on the upper computer respectively, so as to record test results corresponding to the test programs and compare preset threshold values and actual measurement values of different parameters in the test programs;

placing PCBA plates to be detected: the detection tool is provided with a station placement area, a plurality of stations are arranged in the station placement area, each station is provided with a corresponding control piece, and the PCBA to be detected is placed on the different stations;

and (3) performing detection: starting a test program on the station through the control piece, sending a test command to the lower computer by the upper computer, and executing corresponding test flow steps on the PCBA to be tested on different stations by the lower computer according to the selected different test programs;

judging the detection result: in the execution process of the testing flow step, the lower computer timely transmits the detection result data to the upper computer and stores the detection result data in the testing database, the actually measured numerical value of the parameter in the detection result is compared with the preset threshold value of the parameter in the testing program, and whether the PCBA board to be detected placed on each station accords with the regulation is judged;

and (5) ending the detection.

In some embodiments, the multi-station PCBA board inspection method may further include the steps of: and storing the judging and detecting result. Specifically, after the detection is finished, the detection judgment result of the PCBA to be detected is sent to a storage system for statistics and supervision. For example, the detection determination result of the PCBA board to be detected may be sent to the cloud server, so that the related personnel may review the related information in time. Or, the cloud server can also send the detection and judgment result information to the APP or the WeChat applet so as to enable related personnel to know related information in time and make subsequent processing decisions in time.

In some embodiments, the plurality of stations are distributed in an array within the station placement area on the inspection tool. Such as circumferential annular array, rectangular array, irregularly arranged array, etc. In a specific embodiment, the plurality of stations are distributed in a rectangular array within the station placement area.

In some embodiments, the control element corresponding to each station is at least one of wireless control and mechanical control. In a specific embodiment, the wireless control mode of the control element is a two-dimensional code. In a specific embodiment, the mechanical control mode of the control element is a control key.

In some embodiments, the performing detection step is: after the PCBA board to be detected is placed on different stations, the upper computer enters a test state through the control piece on the station, meanwhile, the upper computer sends a test command to the lower computer, and the lower computer detects the PCBA board to be detected on the station according to a test program selected by the control piece.

Compared with the prior art, the multi-station PCBA board detection method provided by the invention has at least the following advantages:

1. in the PCBA board makeup test mode, the makeup board is split or broken off with fingers and thumb to be processed first, and then detection is carried out at a plurality of stations simultaneously. Therefore, the problems of poor board breaking and low board efficiency in the imposition test can be solved, so that the detection efficiency is improved.

2. By using the multi-station PCBA board detection method, a plurality of PCBA boards of different types can be detected on different stations at the same time, the detection accuracy is high, the manpower and material resources are saved, and the statistics of detection results is convenient.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic flow chart of a multi-station PCBA board detection method in the invention;

FIG. 2 is a schematic structural diagram of an embodiment of a detection tool according to the present invention;

FIG. 3 is a schematic diagram showing the distribution of the number of different stations in the inspection tool shown in FIG. 2;

FIG. 4 is a schematic structural view of a test station tooling in the inspection tooling shown in FIG. 2;

FIG. 5 is a schematic view of the structure of the tool shown in FIG. 2 when detecting multiple PCBA boards simultaneously;

FIG. 6 is a schematic diagram of the test procedure steps when the tool shown in FIG. 2 detects multiple PCBA boards simultaneously;

FIG. 7 is a flow chart of a detection process when multiple PCBA boards shown in FIG. 6 are detected simultaneously; and

fig. 8 is a schematic diagram of an overall flow chart of the detection tool shown in fig. 2 when simultaneously detecting a plurality of PCBA boards.

Reference numerals:

1-detection tool 2-test station tool 3-two-dimensional code

10-upper computer 11-display screen 20-lower computer

21-Port 30-station 31-control

32-test interface 4-scanner or scanner

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present invention, it should be understood that the terms "center," "lateral," "upper," "lower," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or components referred to must have a specific orientation or be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more. In addition, the term "comprising" and any variations thereof are meant to be "at least inclusive".

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between the two components. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used herein, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

Referring to fig. 1, fig. 1 is a flow chart of a multi-station PCBA board detection method according to the present invention. To achieve at least one of the advantages and other advantages, an embodiment of the present invention provides a multi-station PCBA board inspection method for inspecting different types of PCBA boards. For example, different kinds of PCBA boards can be detected by the multi-station PCBA board detection method respectively, or different kinds of PCBA boards can be detected simultaneously. The detection tool adopted by the multi-station PCBA board detection method comprises an upper computer and a lower computer, and the detection method at least comprises the following steps:

step S11: creating a test program database

And a plurality of test programs of the PCBA boards are arranged on the upper computer and correspond to the PCBA boards of different types. The test program of each PCBA at least comprises test flow steps and preset thresholds of different parameters, and the test program is used for detecting the performance parameters of the PCBA of different types.

Step S12: establishing a test database

And setting a plurality of test data programs corresponding to the test programs of the PCBA boards of different types on the upper computer so as to record the test results or the detection results corresponding to the test programs. And simultaneously, the actual measurement values of different parameters in the performance of each PCBA board are recorded, and the actual measurement values of the different parameters can be compared with preset thresholds of the different parameters in the test program.

Step S13: place PCBA board that waits to detect

The detection tool is provided with a station placement area. A plurality of stations are arranged in the station placement area, each station is provided with a corresponding control piece, and the control pieces can be used for starting a test program on the corresponding station. Before detection, PCBA boards to be detected are placed on corresponding different stations.

Step S14: performing detection

And starting a test program on the corresponding station through the control piece. The upper computer sends a test command to the lower computer, and the lower computer receives the test command and then executes corresponding test flow steps on the PCBA boards to be tested on each station according to the test programs of the selected PCBA boards of different types so as to detect the PCBA boards.

The detection process of the PCBA board to be detected placed on each station is as follows: after the PCBA board to be detected is placed on different stations, the upper computer is enabled to enter a test state through the control piece on the station. Meanwhile, the upper computer sends a test command to the lower computer, and the lower computer detects the PCBA board to be tested on the station according to a test program selected by the control piece and sends a detection result to the test database.

Step S15: determining the detection result

In the execution process of the test flow step, the lower computer timely transmits the detection result data to the upper computer and stores the detection result data in the established test database. In the test database, different parameter values of the PCBA board in the detection result are compared with the preset parameter threshold value in the test program, so as to judge whether the PCBA board to be detected placed on each station meets the specification.

Specifically, for example, a preset threshold value of a certain performance index parameter in the PCBA board to be detected is set to a range of values. If the actual detection value of the performance index parameter is within the corresponding preset threshold range, the performance index is judged to be in accordance with the regulation. If the actual detection value of the performance index parameter is out of the corresponding preset threshold range, the performance index is judged to be out of specification. If one or one performance index of all the detected performance parameters of the PCBA to be detected is judged to be out of specification, the PCBA to be detected is judged to be out of specification.

Step S16: and (5) ending the detection.

In some embodiments, the multi-station PCBA board inspection method may further include the steps of: and storing the judging and detecting result. And after the detection is finished, sending the detection judgment result of the PCBA to be detected to a storage system (such as a server) for statistics and supervision.

Referring to fig. 2, fig. 2 is a schematic structural diagram of an embodiment of a detection tool according to the present invention. The inspection tool 1 of the present example includes an upper computer 10 and a lower computer 20. The upper computer 10 is located above the detection tool 1, and can be connected with a computer, and can send a test program, test result data and the like in the upper computer 10 to the computer and store the test program and the test result data. The upper computer 10 has a display screen 11 for displaying test results, test data, test determination results, etc.

The upper computer 10 is provided with a plurality of PCBA board test programs for detecting PCBA boards of different types. The test procedure of the PCBA board at least comprises test flow steps and preset thresholds of different parameters. A plurality of test data programs corresponding to the test programs of the PCBA boards can be further set in the upper computer 10, so as to record the test results corresponding to the test programs. Further, the actual measurement results of different parameters of the PCBA to be detected on the station can be compared with a preset threshold value in a test program, so that whether the PCBA to be detected meets the specification or not is judged.

The lower computer 20 is located below the detection tool 1 and is movable within the detection tool 1. In the example shown in the figure, a plurality of ports 21 are provided in the lower computer 20. The ports 21 may be, but are not limited to, direct voltage ports, DO high current ports, DC low current ports, AC high current ports, relay ports, frequency detection ports, pulse count ports, for example. It will be appreciated that there are several types of modules provided in the lower computer 20, each having a plurality of modules. For example, the lower computer 20 may be provided with voltage, current, relay, frequency, pulse count, etc. The voltage, current, relay, frequency, pulse count and other modules are respectively provided with a plurality of modules. The modules may be distributed in an array.

Referring to fig. 3 in combination with fig. 2, fig. 3 is a schematic distribution diagram of the number of different stations in the inspection tool shown in fig. 2. The detection tool 1 is provided with a station placement area. A plurality of stations 30 are provided in the station placement area. The stations 30 are distributed in an array. In the example of fig. 3, the stations 30 are distributed in a matrix array. As shown, the different kinds of stations 30 are arranged laterally in the horizontal direction. In some embodiments, multiple stations 30 of the same kind may be longitudinally aligned in a vertical direction. It is further noted that the specific shape of the station 30 may be set or adjusted depending on the shape of the PCBA board to be inspected.

Each station 30 is correspondingly provided with a separate control member 31 for controlling the start and stop of the detection procedure of the station 30. The control member 31 is at least one of a wireless control and a mechanical control. The wireless control mode can be a two-dimensional code, and the mechanical control mode can be a control key. In the example shown, the control 31 is a control key.

Referring to fig. 4 in combination with fig. 2 and 3, fig. 4 is a schematic structural diagram of a test station tool in the inspection tool shown in fig. 2. A plurality of test interfaces 32 are provided within each station 30. The test interfaces 32 in the station 30 may be electrically connected to the ports 21 provided in the lower computer 20. The PCBA board to be inspected may be mounted on the station 30 via a test station tooling 2. The test station tooling 2 is electrically connected with the station 30 through a test interface 32. A two-dimensional code 3 is arranged on the test station tooling 2 arranged on each station 30. As shown in fig. 2, the detection tool 1 is further provided with a scanner or scanner 4, which can be used to scan the two-dimensional code 3 in the test station tool 2, so as to start the test program of the test station tool 2, etc.

The following description and explanation will be made by describing and explaining the detection process or steps of several different kinds of PCBA boards, and further describing or explaining the aforementioned multi-station PCBA board detection method. Referring to fig. 5 in conjunction with fig. 2 to 4, fig. 5 is a schematic structural diagram of the inspection tool shown in fig. 2 when inspecting multiple PCBA boards simultaneously. Further, the following description will take three different PCBA boards of the PCBA board of the 12V1A switching power supply, the PCBA board of the electric iron, and the PCBA board of the handheld hair clipper battery as examples to describe the detection method or detection process of the PCBA boards of different kinds. As shown in fig. 5, the detection method steps of the three PCBA boards are as follows.

Step S01: at least three stations 30 are arranged on the upper computer 10 in the detection tool 1, and each station 30 generates a corresponding two-dimensional code 3. The two-dimensional code 3 can be attached to the test station tooling 2 arranged on the station 30.

Step S02: the upper computer 10 of the detection tool 1 is provided with a PCBA board of a 12V1A switching power supply, a PCBA board of an electric iron and a test program of the PCBA board of a handheld hair clipper battery. The test procedure may include test flow steps and predetermined thresholds for different parameters. Specifically, the steps of the test flow of the PCBA board of the 12V1A switching power supply, the PCBA board of the electric iron and the PCBA board of the battery of the hand-held hair clipper are shown in FIG. 6. Wherein, the test steps of the PCBA board of the 12V1A switch power supply are 6 steps in total, the test steps of the PCBA board of the electric iron are 9 steps in total, and the test steps of the PCBA board of the handheld hair clipper battery are 8 steps in total.

Step S03: the test station tooling 2 for the PCBA board is separately manufactured and mounted on the corresponding inspection station 30. The two-position code 3 generated in step S01 may be attached to the test station fixture 2 corresponding to the station 30.

Step S04: the scanner or scanner 4 on the detection tool 1 is used for scanning the two-dimensional code on the PCBA board to be detected or starting the corresponding control key 31 on the station 30, and the corresponding pressing rod of the corresponding test station 30 is lifted. For example, the two-dimensional codes on the PCBA board of the 12V1A switching power supply, the PCBA board of the electric iron and the PCBA board of the hand-held hair clipper battery are scanned respectively, the upper computer 10 issues a command, and the pressing rod of the corresponding station 30 is lifted.

Step S05: the PCBA board of the 12V1A switch power supply to be detected, the PCBA board of the electric iron and the PCBA board of the handheld hair clipper battery are respectively arranged on the test station fixture 2 on different stations 30. The scanner or scanner 4 on the detection tool 1 is used for scanning the two-dimensional code 3 on the test station tool 2 or the station 30 or starting the control key 31 on the station 30, and the pressing rod corresponding to the station 30 is pressed down.

Step S06: the lower computer 20 actively reports or transmits the pressing bar pressing state to the upper computer 10, and the test starts.

Step S07: the upper computer 10 enters a corresponding test program according to the two-dimensional code of the PCBA board to be detected, which is scanned by the scanner or the scanner 4. The flow diagram of the detection process when the detection tool 1 detects the PCBA board of the 12V1A switch power supply to be detected, the PCBA board of the electric iron and the PCBA board of the handheld hair clipper battery simultaneously is shown in fig. 7. In the testing process, the lower computer 20 transmits or transmits the detection data on the different stations 30 to the upper computer 10 in real time. The test data of different stations 30 are stored in different test data programs in the upper computer 10.

Step S08: the test is completed or the test is ended.

Referring to fig. 8, fig. 8 is a schematic diagram of an overall flow chart when the detection tool simultaneously detects multiple PCBA boards. After the execution on the corresponding station 30 of the PCBA board to be detected completes the testing procedure of the station 30, the display screen 11 in the upper computer 10 can directly display the station and information that the PCBA board is bad or not in accordance with the regulations. The host computer 10 may send and store these stations and PCBA board information indicating the PCBA board failure to be detected to a remote server. The server can automatically count the bad information of the PCBA to be detected and the corresponding order quantity. Further, the server can send the counted bad information of the PCBA board to be detected, the corresponding information of order number and the like to a mobile phone APP or a WeChat applet, so that research and development engineers and the like can timely know the conditions of production yield and the like of the produced PCBA boards of different types and batches.

Although terms such as PCBA board, host computer, lower computer, test program, station, threshold, etc. are used more herein, the possibility of using other terms is not precluded. These terms are used merely for convenience in describing and explaining the nature of the invention; they are to be interpreted as any additional limitation that is not inconsistent with the spirit of the present invention.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.

Claims

1. The multi-station PCBA board detection method is used for detecting PCBA boards of different types, and the detection tool adopted by the detection method comprises an upper computer and a lower computer and is characterized by at least comprising the following steps:

and (3) performing detection: starting a test program on the station through the control piece, sending a test command to the lower computer by the upper computer, and executing corresponding test flow steps on the PCBA to be detected on different stations by the lower computer according to the selected different test programs;

and (5) ending the detection.

2. The multi-station PCBA board inspection method according to claim 1, characterized in that: the multi-station PCBA detection method comprises the following steps of:

storing the judgment detection result: after the detection is finished, the detection judgment result of the PCBA to be detected is sent to a storage system for statistics and supervision.

3. The multi-station PCBA board inspection method according to claim 1, characterized in that: on the detection tool, the plurality of stations are distributed in an array in the station placement area.

4. A multi-station PCBA board inspection method according to claim 3, characterized in that: the plurality of stations are distributed in a rectangular array in the station placement area.

5. The multi-station PCBA board inspection method according to claim 1, characterized in that: the control piece corresponding to each station is at least one of wireless control and mechanical control.

6. The multi-station PCBA board inspection method according to claim 5, wherein: the wireless control mode of the control piece is a two-dimensional code.

7. The multi-station PCBA board inspection method according to claim 5, wherein: the mechanical control mode of the control piece is a control key.

8. The multi-station PCBA board inspection method according to claim 1, characterized in that: the execution detection steps are as follows: after the PCBA board to be detected is placed on different stations, the upper computer enters a test state through the control piece on the station, meanwhile, the upper computer sends a test command to the lower computer, and the lower computer detects the PCBA board to be detected on the station according to a test program selected by the control piece.