Single board testing device and board card testing system

Abstract

The utility model provides a single board testing device and a board card testing system, and relates to the technical field of testing equipment. The single board testing device comprises a downloading probe assembly, a power strip tool, a tray and a pressing mechanism. The tray is used for placing a to-be-tested board card; the pressing mechanism is used for pressing the to-be-tested board card; the downloading probe assembly is used for downloading a test program to a to-be-tested board card, and the position and angle of the downloading probe assembly can be adjusted; the power strip tool is used for powering on a to-be-tested board card, and the position of the power strip tool is adjustable. The board card testing system comprises a control unit, a board card tester, a robot and the single board testing device. According to the test system, the test tool is automatically put into and withdrawn after the bar code of the to-be-tested board card is scanned, and the test is automatically started. By automatically adjusting the positions of the downloading probe assembly and the power strip tool of the single board testing device, the device can be switched into various different testing tools, dozens of common IO board cards are compatibly debugged, the universality and the intelligent level of a board card testing system are improved, and the testing efficiency is greatly improved.

Description

Technical Field

[0001] The present application relates to the technical field of testing equipment, and in particular to a single-board testing device and a board testing system. Background Art

[0002] At present, the testing methods of IO boards in power systems are mostly manual or semi-automatic. Manual testing is a test performed by a single person operating a single tester. Only one board can be tested at a time, and manual plugging and unplugging of test tools and manual code scanning are required. This method of testing is inefficient, time-consuming and labor-intensive, and is prone to quality problems caused by human operations such as misadjustment and missed adjustments.

[0003] Most of the first-generation board test systems are semi-automatic test systems. After placing the board at the test station, the system function can be automatically triggered by scanning the code, automatically powering on the board and starting the test. This method reduces the tediousness of manual operation. Some systems can also test two boards at the same time, but when switching to a new model of the board to be tested, a whole set of corresponding test tools needs to be replaced manually, which not only affects the production rhythm, but also cannot eliminate the interference of human factors on the operation.

[0004] There is another intelligent board test system, such as the intelligent single-board test system provided by Chinese patent CN 206523596 U, which can intelligently match different test tools according to different models of boards by scanning boards and querying databases, and automatically start testing. This solution has a certain level of intelligence, but it still corresponds to one set of tools for one board. When there are many types of boards, it is necessary to design a variety of different tools, which increases the production and manufacturing costs.

[0005] It can be seen that most of the board test systems in the prior art have a low degree of automation and cannot achieve fully automatic board testing. In addition, the versatility of test tooling is poor. When testing multiple types of board tests, tooling needs to be frequently switched, which brings inconvenience to the testing work.

[0006] Since there are many types of IO boards in power system protection devices, if a fixture is designed for each board, it will not only be labor-intensive, but also costly and inefficient to test. The versatility of the test fixture also limits the improvement of the automation level of the board test system. In order to realize the automated testing of IO boards, it is necessary to design a test system with good versatility and the ability to automatically switch fixtures. Utility Model Content

[0007] Based on this, the present application provides a single-board testing device and a board testing system. The testing system can automatically match corresponding test tools for boards of different models by searching a database. The single-board testing device can switch the test tooling form by adjusting the position and angle of the download probe assembly and the socket tooling, so that one set of testing device can replace multiple sets of test tools and be applied to the testing of various different models of boards.

[0008] The scheme of this application is as follows:

[0009] A single-board testing device comprises a download probe assembly, a socket strip tooling, a tray and a pressing mechanism; the tray is used to place a board to be tested; the pressing mechanism is used to cooperate with the tray to press the board to be tested; the download probe assembly is used to download a test program to the board to be tested, and its position and angle are adjustable; the socket strip tooling is used to power on the board to be tested, and its position is adjustable.

[0010] In the above-mentioned single board testing device, the download probe assembly includes a 6-pin probe, which is controlled by the first module, the second module and the rotary cylinder, and can achieve horizontal movement along the X-axis and the Y-axis and rotational movement around the Z-axis.

[0011] In the above-mentioned single-board testing device, the socket strip tooling includes a 22-pin needle group and a 30-pin needle group, both of which are composed of probes and needle sleeves; the 22-pin needle group and the 30-pin needle group are controlled by a cylinder and can slide up and down along the Z-axis direction to contact or disengage from the pins of the board to be tested; the socket strip tooling is controlled by a second rodless cylinder and can move horizontally along the Y-axis direction to switch the positions of the 22-pin needle group and the 30-pin needle group; during the board testing process, the 22-pin needle group and the 30-pin needle group are used selectively.

[0012] In the above-mentioned single board testing device, the pressing mechanism includes a pressing plate and a pressing cylinder, and the pressing cylinder can enable the pressing plate to achieve a pressing or ascending action; the pressing mechanism can also be pushed by the first rodless cylinder to move horizontally along the Y-axis direction so that the pressing plate is aligned with the position of the board to be tested.

[0013] In the above-mentioned single-board testing device, the tray is also provided with positioning pins and springs; the board to be tested is fixed by the positioning pins after being placed on the tray; after the test is completed, the elastic force of the spring causes the board to be tested to be detached from the socket fixture and the download probe assembly.

[0014] The present application also provides a board test system, including a control unit, a board tester, a robot and the above-mentioned single board test device; the control unit communicates and interacts with the board tester, the robot and the single board test device respectively; the control unit includes a PLC, which stores a control matrix database.

[0015] In the above-mentioned board test system, each data element in the control matrix database includes the following data items:

[0016] A. Board model name or code: unique in the control matrix database, used to indicate the test model of the board to be tested;

[0017] B. Several test control parameters: used to control the insertion and withdrawal of the test fixture of the board to be tested, which is composed of the download probe assembly and the plug-in fixture.

[0018] In the above-mentioned board test system, the PLC controls the camera of the robot to scan the barcode of the board to be tested, parses the board model according to the barcode information, and generates a test tooling insertion and withdrawal sequence according to the several test control parameters in the control matrix database.

[0019] In the above-mentioned board test system, the single board test device adjusts the position and shape of the download probe assembly and the strip tooling according to the test tooling insertion and withdrawal sequence to achieve the switching of the test tooling.

[0020] In the above-mentioned board test system, after the single board test device is adjusted into place, the PLC controls the board tester to automatically start the board test.

[0021] The board test system of the present application automatically matches different test fixtures for boards of different models by scanning barcodes and searching databases, and switches the test fixtures by adjusting the position and angle of the download probe assembly and the strip fixture, so that a set of single-board test devices can be transformed into a variety of different fixtures, compatible with dozens of commonly used IO boards for debugging. The test process is highly automated without manual intervention, which improves the versatility and intelligence of the board test system and greatly improves the production test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without exceeding the scope of protection required by the present application.

[0023] Figure 1 It is a schematic diagram of the appearance of the single board testing device of the present application.

[0024] Figure 2 It is an exploded view of the single board testing device of the present application.

[0025] Figure 3It is a structural diagram of the socket tooling of the single board testing device of the present application.

[0026] Figure 4 It is the software architecture diagram of the board test system of this application.

[0027] Figure 5 It is a board test flow chart of the board test system of this application.

[0028] Figure 6 This is a schematic diagram of the control matrix database editing of the board test system of this application.

[0029] Reference numerals:

[0030] 1. First module; 2. Second module; 3. Rotating cylinder; 4. 6-pin needle group; 5. Spring; 6. First rodless cylinder; 7. Tray; 8. Positioning pin; 9. First slider; 10. Pressing plate; 11. First downward pressing cylinder; 12. Second downward pressing cylinder; 13. First linear rail; 14. Second rodless cylinder; 15. Needle sleeve; 16. Probe; 17. 30-pin needle group; 18. 22-pin needle group; 19. Second slider; 20. Second linear rail; 21. Cylinder; 22. Third linear rail. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0032] Example

[0033] like Figure 1 and Figure 2 As shown, the present application provides an IO type board test system for a power system protection device (hereinafter referred to as the board test system), including a control unit, a board tester, a robot and a single board test device.

[0034] The present application also provides a single board test device, including a download probe assembly, a plug strip tooling, a tray 7 and a pressing mechanism. The tray 7 and the pressing mechanism are arranged above the main frame of the single board test device, and the download probe assembly and the plug strip tooling are arranged below the main frame.

[0035] To facilitate description of the positional relationship and motion trajectory between components, in the following description, the long side direction of the single board testing device is taken as the X-axis direction, the short side is taken as the Y-axis direction, and the height direction is taken as the Z-axis direction.

[0036] like Figure 2As shown, the tray 7 is arranged on the working panel of the main frame, and is used to place the board to be tested (not shown in the figure). The tray 7 is also provided with a positioning pin 8 and a spring 5. After the robot places the board to be tested on the tray 7, the positioning pin 8 can be used to fix the board to be tested, so as to prevent the board from moving in the subsequent process and affecting the test process; after the test is completed, the board is bounced upward by the elastic force of the spring 5, so that it is separated from the plug-in fixture and the download probe assembly.

[0037] The pressing mechanism is arranged above the tray 7, and includes a pressing plate 10, a first pressing cylinder 11, a second pressing cylinder 12, a first rodless cylinder 6, a first slider 9 and a first linear rail 13. The first linear rail 13 is installed on both sides of the working panel, and sliders 9 are arranged thereon. The pressing plate 10 is connected to the slider 9 and can be driven by the first rodless cylinder 6 to slide along the first linear rail 13. After the board to be tested is placed on the tray 7, the first rodless cylinder 6 pushes the pressing plate 10 to move along the Y-axis direction to align with the board to be tested. The first pressing cylinder 11 and the second pressing cylinder 12 are also arranged on the pressing plate 10. After the pressing plate 10 is aligned with the board to be tested, the pressing plate 10 moves downward along the Z-axis under the action of the pressing cylinder to press the board to be tested.

[0038] The download probe assembly includes a 6-pin probe 4, a first module 1, a second module 2 and a rotary cylinder 3. The 6-pin probe 4 is used to download test signals or programs to the board to be tested, so as to replace the download needle function during manual board testing. The first module 1, the second module 2 and the rotary cylinder 3 can enable the 6-pin probe 4 to achieve horizontal movement along the X-axis and the Y-axis and rotational movement around the Z-axis, respectively, so as to switch the positioning of the 6-pin probe at will according to the 6-pin pin position and direction of the board to be tested.

[0039] like Figure 3 As shown, the strip tooling includes a 30-pin needle group 17, a 22-pin needle group 18, a second slider 19, a second linear rail 20, a cylinder 21, and a third linear rail 22. The 22-pin needle group 18 and the 30-pin needle group 17 are both composed of a probe 16 and a needle sleeve 15.

[0040] Depending on the model of the board to be tested, either 22-pin pin group 18 or 30-pin pin group 17 is used to power on the board to be tested, replacing the power-on socket function during manual board testing. Figure 3 As shown, the 22-pin needle group 18 and the 30-pin needle group 17 are fixed on the second slider 19, and the second slider 19 is set on the second linear rail 20, and can be driven by the cylinder 21 to move up and down along the Z-axis direction to make the needle group contact or disengage the 22-pin or 30-pin pins of the board to be tested. The plug-in strip tooling can also be driven by the second rodless cylinder 14 to move along the third linear rail 22, so that the plug-in strip tooling as a whole moves horizontally along the Y-axis direction, so as to automatically switch the positions of the 22-pin needle group and the 30-pin needle group according to the model of the board to be tested.

[0041] In the previous manual or semi-automatic board test, since the position and angle of the download pins and the number and position of the power-on sockets required by different models of boards are different, different test fixtures need to be replaced according to different board models. In the single-board test device of the present application, by adjusting the position and shape of the 6-pin probe in the download probe assembly and the 22-pin / 30-pin needle group in the strip tool, a set of single-board test devices can be transformed into a variety of different test fixtures as needed to be suitable for testing various models of IO boards.

[0042] The board test system of the present application includes a control unit, a board tester, a robot and the aforementioned single board test device. The control unit communicates and interacts with the board tester, the robot and the single board test device respectively. The overall function of the board test system and its implementation method are described below from the aspect of software control.

[0043] like Figure 4 As shown in the figure, PLC is the core of the control unit, and communicates with the single-board test device and the board tester through the TCP protocol. After the PLC parses the board model to be tested and the test fixture matrix sequence, it controls the action of the single-board test device to put the test fixture in and out. After the test fixture is in place, the PLC transmits the arrival signal to the board tester, and the board tester automatically starts to test the board.

[0044] The PLC system also stores a control matrix database. Figure 6 As shown, each data element in the control matrix database includes the following data items:

[0045] A. Board model name or code: unique in the control matrix database, used to indicate the test model of the board to be tested;

[0046] B. Several test control parameters A1-A8: used to control the insertion and withdrawal of the test fixture of the board to be tested.

[0047] After the PLC parses the board model according to the barcode information of the board to be tested, it matches the corresponding test fixture by querying the control matrix database and generates a test fixture insertion and withdrawal sequence.

[0048] For example: If the model of the board to be tested is 1502, query Figure 6 The control matrix database is used to obtain the corresponding control parameter A1; if the model of the board to be tested is 1506, the corresponding control parameter is A2. A1-A8 correspond to different test fixtures and the position of the fixtures, and the sequence of test fixture insertion and withdrawal is formed accordingly.

[0049] It should be noted that in this application, the test tooling refers to the combination of the download probe assembly and the socket tooling, which mainly refers to the orientation, shape and positional relationship between the download pin (i.e. 6-pin probe) and the power socket (22-pin / 30-pin pin set). The test tooling insertion and withdrawal refers to the withdrawal of the old tooling on the test station and the re-insertion after switching to the new tooling.

[0050] The test fixture insertion and withdrawal sequence can be a series of signal codes or a section of operation instructions, including the matched test fixture information and the location and shape information of the fixture (i.e., the information represented by the control parameters A1-A8), such as whether the plug strip fixture uses a 22-pin needle group or a 30-pin needle group, the positioning position of the needle group, the position and angle of the download pin, etc., and includes the withdrawal instruction of the previously invested fixture and the input instruction of the new fixture. The single board test device performs the test fixture insertion and withdrawal action according to the test fixture insertion and withdrawal sequence.

[0051] In this embodiment, the board test system is provided with 4 sets of single-board test devices, which can test 4 IO boards of the same or different models at the same time.

[0052] like Figure 5 As shown, the test process of using the board test system of the present application to perform IO board test is as follows:

[0053] After the board to be tested arrives at the designated location, the PLC controls the robot's camera to scan the barcode of the board to be tested and parses the board model based on the barcode information.

[0054] After the code is scanned successfully, the control matrix database is searched according to the parsed board model name, the corresponding test fixture is matched, and the test fixture insertion and withdrawal sequence is generated. At the same time, the robot grabs the board and puts it into tray 7, waiting to start the single board test.

[0055] The PLC communicates with the single-board test device, and the single-board test device automatically performs the test tooling insertion and withdrawal actions according to the test tooling insertion and withdrawal sequence. By adjusting the position and angle of the download probe assembly, and switching the number of pins, position and other parameters of the plug-in tooling, the test tooling form required by the board to be tested is switched to the required position. The specific actions are as follows: the second rodless cylinder 14 pushes the plug-in tooling to move on the third linear rail 22, and sends the 22-pin needle group 18 or the 30-pin needle group 17 (either one is used) to the specified position; at the same time, the first module 1, the second module 2 and the rotating cylinder 3 start to move, and send the 6-pin probe 4 to the specified position; the first rodless cylinder 6 moves the pressing mechanism to the top of the board to be tested through the first linear rail 13, and then the first pressing cylinder 11 and the second pressing cylinder 12 act to press the pressure plate 10 against the board to be tested, so that the 6-pin probe 4 and the 22-pin needle group 18 or the 30-pin needle group 17 (either one is used) are in contact with the pins to be tested of the board to be tested.

[0056] After the test tooling is in place, the PLC system communicates with the board tester, and the board tester starts testing the board.

[0057] After the test is completed, the pressing mechanism withdraws to its original position, and the spring 5 under the tray 7 rebounds upward, so that the board to be tested is out of contact with the 22-pin needle group 18 / 30-pin needle group 17 and the 6-pin probe 4 below, and then the robot takes the board away.

[0058] Figure 5 It also includes some auxiliary operation steps, such as extending the stop mechanism on the roller conveyor, putting the board back into the roller conveyor line and stamping it, etc. These are non-critical steps in the test process and will not be described in detail here.

[0059] During the test, the system automatically collects board test data and key parameters, and uploads the test data to the MDC data acquisition system for later data analysis and problem tracing.

[0060] The single-board testing device of the present application can automatically adjust the position and shape of the 22pin / 30pin pin group and the 6pin probe according to different board models, so that a set of single-board testing devices can be transformed into a variety of different tooling, compatible with dozens of commonly used IO boards for debugging.

[0061] The board test system of the present application automatically starts the system function after scanning the barcode, can automatically put in and out the test tooling, and automatically start the board test. The whole process is controlled by software data interaction, realizing unmanned operation, effectively improving the efficiency of board test, and preventing human errors. After the test is completed, the test data is uploaded in real time to facilitate the later problem tracing.

[0062] It should be noted that this embodiment is only a preferred implementation of the present application, and is not the entire content of the present application. In other embodiments, the number, positional relationship, and implementation of each component can be changed equivalently. For example, the cylinder in the present embodiment can also be replaced by a hydraulic cylinder, and the rodless cylinder can also be replaced by an ordinary cylinder. The fixing method of the board to be tested can also be replaced by other methods by the clamping method of the pressure plate, such as clamping from both sides or fixing by a slot or a suction cup, etc., which are not limited here. The position, quantity, installation method, etc. of the cylinder, slide rail, slider, locating pin, etc. can be changed, which is a common design change for those skilled in the art, and will not be repeated here. In addition, the board test process described in the present embodiment is also only one of the preferred processes. In other embodiments, certain steps and their order can also be adjusted and changed as needed, and such changes do not deviate from the design concept of the present application.

[0063] The embodiments of the present application are described in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and its core idea of ​​the present application. At the same time, changes or deformations made by those skilled in the art based on the ideas of the present application, the specific implementation methods and the scope of application of the present application, all belong to the scope of protection of the present application. In summary, the content of this specification should not be construed as a limitation on the present application.

Claims

1. A single board testing device, characterized in that: It includes a download probe assembly, a socket tool, a tray and a pressing mechanism; the tray is used to place the board to be tested; the pressing mechanism is used to cooperate with the tray to press the board to be tested; the download probe assembly is used to download the test program to the board to be tested, and its position and angle are adjustable; the socket tool is used to power on the board to be tested, and its position is adjustable.

2. The single board testing device according to claim 1, characterized in that: The download probe assembly includes a 6-pin probe, which is controlled by a first module, a second module and a rotary cylinder, and can achieve horizontal movement along the X-axis and the Y-axis and rotational movement around the Z-axis.

3. The single board testing device according to claim 1, characterized in that: The socket strip tooling includes a 22-pin needle group and a 30-pin needle group, both of which are composed of a probe and a needle sleeve; the 22-pin needle group and the 30-pin needle group are controlled by a cylinder and can slide up and down along the Z-axis direction to contact or disengage from the pins of the board to be tested; the socket strip tooling is controlled by a second rodless cylinder and can move horizontally along the Y-axis direction to switch the positions of the 22-pin needle group and the 30-pin needle group; during the board testing process, the 22-pin needle group and the 30-pin needle group are used selectively.

4. The single board testing device according to claim 1, characterized in that: The pressing mechanism includes a pressing plate and a pressing cylinder, and the pressing cylinder can enable the pressing plate to press down or rise; the pressing mechanism can also be pushed by the first rodless cylinder to move horizontally along the Y-axis direction so that the pressing plate is aligned with the position of the board to be tested.

5. The single board testing device according to claim 1, characterized in that: The tray is also provided with a positioning pin and a spring; the board to be tested is fixed by the positioning pin after being placed on the tray; after the test is completed, the board to be tested is separated from the socket fixture and the download probe assembly by the elastic force of the spring.

6. The board test system is characterized by: It comprises a control unit, a board tester, a robot and a single board testing device as described in any one of claims 1 to 5; the control unit communicates and interacts with the board tester, the robot and the single board testing device respectively; the control unit comprises a PLC, in which a control matrix database is stored.

7. The board test system according to claim 6, characterized in that: Each data element in the control matrix database includes the following data items: A. Board model name or code: unique in the control matrix database, used to indicate the test model of the board to be tested; B. Several test control parameters: used to control the insertion and withdrawal of the test fixture of the board to be tested, which is composed of the download probe assembly and the plug-in fixture.

8. The board test system according to claim 7, characterized in that: The PLC controls the camera of the robot to scan the barcode of the board to be tested, parses the board model according to the barcode information, and generates a test tooling insertion and withdrawal sequence according to the several test control parameters in the control matrix database.

9. The board test system according to claim 8, characterized in that: The single board testing device adjusts the position and shape of the download probe assembly and the strip tooling according to the test tooling insertion and withdrawal sequence to achieve the switching of the test tooling.

10. The board test system according to claim 9, characterized in that: After the single board testing device is adjusted into place, the PLC controls the board tester to automatically start the board test.

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