Split type testing device and split type testing method

Abstract

The invention provides a split type testing device and a split type testing method, which can shorten the development period of the testing device and reduce the equipment development cost. The split type testing device comprises an ejector pin tool, the ejector pin tool comprises an ejector pin plate and a fixing tool used for fixedly installing a to-be-tested plate, and the ejector pin plate is fixedly connected to the fixing tool and used for being electrically connected with the to-be-tested plate fixedly installed through the fixing tool; and the test control board is detachably and electrically connected to the ejector pin plate and is used for being electrically connected with a power supply so as to test the to-be-tested board.

Description

Technical Field

[0001] The invention relates to the technical field of circuit board testing, and in particular to a split testing device and a split testing method. Background Art

[0002] Printed circuit board assembly (PCBA) is an important electronic component that not only supports electronic components but also provides circuit connections for electronic components. In recent years, with the rapid development and popularization of electronic products, the electronics industry has become more and more dependent on PCBA. As we all know, after the PCBA is manufactured, it needs to be tested to ensure its factory quality, so PCBA testing devices have come into being.

[0003] There are usually two design schemes for existing PCBA test devices: one is a dedicated test board scheme, which makes the test device into a dedicated test board with ejector pins installed on it to connect with the board to be tested through the ejector pins, and provides an excitation signal through the dedicated test board to test the board to be tested, and reads back the parameters of the unit to be tested to display the test results; the other is a flying probe test scheme, which is adapted to different types of PCBA tests by controlling the horizontal and vertical movement distances of the test needles through the host computer.

[0004] However, on the one hand, the existing dedicated test board solution has to be dedicated because all test-related circuits and test pins are placed on the test board. That is, each test of a PCBA of a camera module to be tested requires the development of a corresponding dedicated complex test board; in other words, when there are multiple PCBAs of similar camera modules that need to be tested, it is necessary to develop multiple dedicated test boards, which will lead to a long development cycle of test tools, high development costs, and problems that test tools cannot be reused. On the other hand, the existing flying probe test solution not only has very complex and large test equipment, high cost and difficult maintenance, but also has high requirements for operators, which is not conducive to the promotion and popularization of test equipment. Summary of the invention

[0005] An advantage of the present invention is that it provides a split test device and a split test method, which can shorten the development cycle of the test device and reduce the equipment development cost.

[0006] Another advantage of the present invention is that it provides a split test device and a split test method. In one embodiment of the present invention, the split test device can replace different test ejector plates to adapt to different types of printed circuit board assemblies, which helps to reduce equipment costs and reduce the requirements on workers' abilities.

[0007] Another advantage of the present invention is that it provides a split test device and a split test method. In one embodiment of the present invention, the split test device can reuse a test control board to test different types of printed circuit board assemblies, thereby reducing the design difficulty, improving the development efficiency of the test device, and facilitating promotion and popularization.

[0008] Another advantage of the present invention is that it provides a split testing device and a split testing method. In one embodiment of the present invention, the split testing device can support automatic testing of panel-type printed circuit board assemblies, which can not only improve testing efficiency but also avoid missing a single board to be tested.

[0009] Another advantage of the present invention is to provide a split-type testing device and a split-type testing method, wherein, in one embodiment of the present invention, the split-type testing device can achieve uploading and tracing of test data.

[0010] Another advantage of the present invention is to provide a split test device and a split test method, wherein in order to achieve the above-mentioned purpose, no complicated system is required in the present invention. Therefore, the present invention successfully and effectively provides a solution, not only providing a simple split test device and a split test method, but also increasing the practicality and reliability of the split test device and the split test method.

[0011] In order to achieve at least one of the above advantages or other advantages and purposes of the present invention, the present invention provides a split test device, comprising:

[0012] An ejector tool, the ejector tool comprising an ejector plate and a fixing tool for fixing and installing a board to be tested, the ejector plate being fixedly connected to the fixing tool for electrically connecting the board to be tested fixedly mounted via the fixing tool; and

[0013] A test control board is detachably and electrically connected to the ejector plate and is used to be electrically connected to a power source to test the board to be tested.

[0014] According to one embodiment of the present application, the ejector plate includes an ejector circuit board and an ejector end connector that can be electrically disposed on the ejector circuit board; the test control board includes a control circuit board and a control end connector that can be electrically disposed on the control circuit board, and the control end connector and the ejector end connector can be electrically plugged into each other.

[0015] According to one embodiment of the present application, the ejector end connector and the control end connector are respectively board-to-board connectors that match each other, and the ejector end connector and the control end connector are directly plugged into each other to electrically fix the control circuit board and the ejector circuit board.

[0016] According to one embodiment of the present application, the ejector end connector and the control end connector are respectively FPC connectors that match each other, and the ejector end connector and the control end connector are indirectly plugged into each other through a flexible circuit board to electrically connect the control circuit board and the ejector circuit board.

[0017] According to one embodiment of the present application, the fixing tool includes a fixing frame for placing the board to be tested, a pin block penetrating the fixing frame, and an upper cover plate covering the upper side of the fixing frame; the pin circuit board of the pin plate is fixedly mounted on the lower side of the fixing frame.

[0018] According to an embodiment of the present application, the upper cover plate is rotatably connected to the fixed frame; the fixing tool further includes a lower cover plate, and the lower cover plate is arranged on the lower side of the ejector circuit board.

[0019] According to one embodiment of the present application, the fixing tool further includes a pressure block, a buckle and a handle; the pressure block is arranged on the lower surface of the upper cover plate; the buckle and the handle are correspondingly arranged on the upper cover plate.

[0020] According to one embodiment of the present application, the split-type testing device further includes a host computer; the test control board further includes an external connector electrically disposed on the control circuit board, and the external connector is electrically connected to the host computer.

[0021] According to one embodiment of the present application, the control circuit board includes a circuit substrate, a control circuit arranged on the circuit substrate, and a functional circuit group arranged on the circuit substrate; the control circuit is electrically connected to the external connector and the control end connector; the functional circuit group is electrically connected to the external connector, the control circuit, and the control end connector.

[0022] According to one embodiment of the present application, the functional circuit group includes a power conversion circuit, a voltage and current detection circuit, and a load switch circuit; the power conversion circuit is electrically connected to the external connector and the control circuit; the voltage and current detection circuit is electrically connected to the power conversion circuit and the control circuit; the load switch circuit is electrically connected to the power conversion circuit and the control end connector.

[0023] According to one embodiment of the present application, the control circuit board further includes a path switching circuit, which is electrically connected to the control circuit, the power conversion circuit, the control end connector and the external connector; the control circuit is used to control the path switching circuit to switch to different channels so that the host computer is automatically connected to different boards in the board to be tested.

[0024] According to an embodiment of the present application, the path switching circuit includes a USB switching circuit, a UART switching circuit, and a GPIO switching circuit arranged in parallel.

[0025] According to another aspect of the present application, the present application further provides a split testing method, comprising the steps of:

[0026] Select the matching ejector tooling according to the type of board to be tested;

[0027] Removably and electrically connecting the ejector plate of the ejector tooling to the test control board;

[0028] The test control board is electrically connected to a host computer and a power supply; and

[0029] After the board to be tested is loaded into the fixing fixture of the ejector fixture, the board to be tested is automatically tested.

[0030] According to one embodiment of the present application, the step of automatically testing the board to be tested after the board to be tested is loaded into the fixing fixture of the ejector fixture comprises the steps of:

[0031] By means of the control circuit of the test control board, a change in the grounded in-place signal of the board to be tested is detected to determine whether the board to be tested has been put in;

[0032] In response to the board to be tested being placed, the control circuit starts to detect the model of the board to be tested, so as to control the power conversion circuit of the test control board to output the corresponding voltage according to the different models, and upload information to the host computer through the external connector of the test control board to complete the test preparation;

[0033] Sending a start command to the control circuit through the host computer to control the power conversion circuit and the load switch circuit to continuously provide power to the board to be tested;

[0034] Through the control circuit, the voltage and current detection circuit of the test control board is controlled to detect the voltage and current of the board to be tested, and the voltage and current test data are uploaded to the host computer to determine whether the voltage and current test data are normal;

[0035] In response to the test data being normal, the host computer completes other test items on the board to be tested, and after the test is completed, sends a stop command to the control circuit to control the power conversion circuit to be powered off; and

[0036] In response to the test data being abnormal, the control circuit is notified by the host computer to disconnect the load switch circuit.

[0037] According to an embodiment of the present application, the step of sending a start command to the control circuit through the host computer to control the power conversion circuit and the load switch circuit to continuously provide power to the board to be tested includes the steps of:

[0038] Sending a first start command to the control circuit through the host computer to notify the control circuit to start testing the first board to be tested in the board to be tested;

[0039] After the control circuit receives the first start command, the enable signal of the first circuit in the load switch circuit is controlled through the path switching circuit to control the power conversion circuit to supply power to the first single board to be tested;

[0040] Outputting different control signals through the control circuit to control the USB switching circuit, the UART switching circuit and the GPIO switching circuit of the path switching circuit to switch to the first channel, so that the host computer is directly connected to the first single board to be tested for testing; and

[0041] The host computer sends a next start command to the control circuit to start testing the next board to be tested in the board to be tested, until all boards to be tested in the board to be tested are tested.

[0042] According to one embodiment of the present application, the split testing method further comprises the steps of:

[0043] The host computer receives the test data uploaded via the test control board and automatically uploads it to the MES system. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 is a schematic block diagram of a split-type testing device according to an embodiment of the present application;

[0045] Figure 2 A first example of a split-type testing device according to the above embodiment of the present application is shown;

[0046] Figure 3 A second example of a split-type testing device according to the above embodiment of the present application is shown;

[0047] Figure 4 A circuit diagram of a test control board in a split-type test device according to the above embodiment of the present application is shown;

[0048] Figure 5 is a schematic flow chart of a split-type testing method according to an embodiment of the present application;

[0049] Figure 6 A schematic flow chart of the automatic testing steps in the split-type testing method according to the above embodiment of the present application is shown;

[0050] Figure 7 A schematic flow chart of a channel switching step in the split-type testing method according to the above embodiment of the present application is shown;

[0051] Figure 8 A schematic diagram of the process of testing a panel to be tested according to the split testing method of the above embodiment of the present application is shown.

[0052] Explanation of the main component symbols: 1. Split test device; 10. Ejector tooling; 11. Ejector plate; 111. Ejector circuit board; 112. Ejector end connector; 12. Fixing tooling; 121. Fixing frame; 122. Ejector block; 123. Upper cover; 124. Lower cover; 125. Press block; 126. Buckle; 127. Handle; 20. Test control board; 21. Control circuit board; 211. Circuit substrate; 212. Control circuit; 213. Power conversion circuit; 214. Voltage and current detection circuit; 215. Load switch circuit; 216. Path switching circuit; 2161. USB switching circuit; 2162. UART switching circuit; 2163. GPIO switching circuit; 22. Control end connector; 23. External connector; 30. Flexible circuit board; 40. Host computer; 2. Power supply.

[0053] The above description of the main component symbols is combined with the accompanying drawings and specific implementation methods to further illustrate the present invention in detail. DETAILED DESCRIPTION

[0054] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the present invention defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the present invention.

[0055] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0056] In the present invention, the term "one" in the claims and the specification should be understood as "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple. Unless it is clearly indicated in the disclosure of the present invention that the number of the element is only one, the term "one" cannot be understood as unique or single, and the term "one" cannot be understood as a limitation on the quantity.

[0057] In the description of the present invention, it should be understood that "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through a medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0058] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0059] Considering that existing test solutions either require the development of multiple dedicated test boards, resulting in a long development cycle of test tools, high development costs, and the problem that test tools cannot be reused; or the test equipment is very complex and large, expensive and difficult to maintain, and has high requirements for operators, which is not conducive to the promotion and popularization of test equipment. The present application creatively provides a split test device and a split test method, which can shorten the development cycle of the test device and reduce the equipment development cost.

[0060] Specifically, refer to the accompanying drawings of the specification of this application. Figures 1 to 4According to one embodiment of the present application, a split test device 1 is provided, which may include an ejector fixture 10 and a test control board 20. The ejector fixture 10 includes an ejector plate 11 and a fixing fixture 12 for fixing and installing a board to be tested W, and the ejector plate 11 is fixedly connected to the fixing fixture 12, and is used to electrically connect the board to be tested W fixed via the fixing fixture. The test control board 20 is detachably electrically connected to the ejector plate 11, and is used to be electrically connected to a power supply 2 to test the board to be tested W. It can be understood that the board to be tested W mentioned in the present application can be, but not limited to, implemented as a printed circuit board assembly PCBA; in addition, the power supply 2 mentioned in the present application can be, but not limited to, implemented as a DC power supply.

[0061] It is worth noting that since the test control board 20 is detachably electrically connected to the ejector plate 11, the test control board 20 and the ejector plate 11 can be designed separately. Therefore, for different types of boards W to be tested, it is only necessary to develop a simple ejector plate according to the position changes of the test points on the boards W to be tested, without the need to redesign the control board, thereby achieving the reuse of the test control board 20, which helps to improve the development efficiency of the test device and reduce the testing cost; that is, the split test device 1 of the present application solves the problems of long development cycle and high development cost of test tooling and the inability to reuse test tooling in the prior art.

[0062] More specifically, if Figure 2 and Figure 3 As shown, the ejector plate 11 of the present application may include an ejector circuit board 111 and an ejector end connector 112 that can be electrically disposed on the ejector circuit board 111; the test control board 20 may include a control circuit board 21 and a control end connector 22 that can be electrically disposed on the control circuit board 21, the control end connector 22 and the ejector end connector 112 can be electrically plugged in to detachably electrically connect the test control board 20 and the ejector tooling 10, so as to facilitate replacement of different ejector tooling 10 to adapt to different types of boards W to be tested, thereby realizing reuse of the test control board 20 and reducing testing costs.

[0063] For example, in the first example of the present application, Figure 2 As shown, the ejector end connector 112 and the control end connector 22 can be implemented as mutually matching board-to-board connectors, and the ejector end connector 112 and the control end connector 22 are directly plugged into each other to electrically fix the control circuit board 21 and the ejector circuit board 111. In this way, when it is necessary to test different types of boards to be tested W, the present application only needs to unplug the board-to-board connector of the ejector board 11 from the board-to-board connector of the test control board 20, and plug in the board-to-board connector of the ejector board 11 that matches the board to be tested W, so that the replacement of the ejector tooling 10 can be completed, which has extremely low requirements on the ability of the operator, and the equipment has low cost and simple maintenance.

[0064] It is worth noting that the ejector board 11 and the test control board 20 may have a foolproof design structure to prevent incorrect insertion. For example, the present application uses different types of board-to-board connectors for foolproofing, or the same type of board-to-board connectors may be selected but placed at different positions on the ejector circuit board 111 and the control circuit board 21 for foolproofing.

[0065] Or, in the second example of the present application, Figure 3 As shown, the ejector end connector 112 and the control end connector 22 can also be implemented as mutually matching FPC connectors, and the ejector end connector 112 and the control end connector 22 are indirectly plugged into each other through the flexible circuit board 30 to electrically connect the control circuit board 21 and the ejector circuit board 111. In other words, the two ends of the flexible circuit board 30 can be electrically plugged into the ejector end connector 112 and the control end connector 22 respectively, and a detachable electrical connection between the control circuit board 21 and the ejector circuit board 111 can still be achieved, which is convenient for replacing the ejector tooling 10, reducing the difficulty of operation and facilitating maintenance. It can be understood that the FPC connector mentioned in this application refers to a connector that can be electrically plugged into the flexible circuit board 30, and this application will not repeat it.

[0066] According to the above embodiments of the present application, Figure 2 and Figure 3 As shown, the fixing fixture 12 may include a fixing frame 121 for placing the board to be tested W, an ejector block 122 disposed through the fixing frame 121, and an upper cover plate 123 disposed on the upper side of the fixing frame 121; the upper cover plate 123 is used to cover the board to be tested W so that the test point on the board to be tested W contacts the ejector block 122; the ejector circuit board 111 of the ejector board 11 is fixedly mounted on the lower side of the fixing frame 121 so that the test point on the ejector circuit board 111 contacts the ejector block 122. It is understandable that the ejector block 122 mentioned in the present application may be fixed to the fixing frame 121 by, but not limited to, glue or position-limiting interference assembly, and corresponds to the test point position on the ejector circuit board 111. In addition, the fixing frame 121 may be provided with a limiting groove for accommodating the board to be tested W and a positioning column for positioning the board to be tested W, so as to limit the fixed position of the board to be tested W and ensure that the test points on the board to be tested W contact the ejector block 122 accordingly, which will not be described in detail in the present application.

[0067] Alternatively, if Figure 2 and Figure 3As shown, the upper cover 123 is rotatably connected to the fixed frame 121 so as to be rotatably opened and closed relative to the fixed frame 121. Thus, when the upper cover 123 is rotated to approach the fixed frame 121, the upper cover 123 is closed so as to press the board to be tested W; and when the upper cover 123 is rotated to move away from the fixed frame 121, the upper cover 123 is opened so as to take and place the board to be tested W. For example, the upper cover 123 and the fixed frame 121 may be connected via a rotating shaft, but not limited thereto.

[0068] Alternatively, if Figure 2 and Figure 3 As shown, the fixing tool 12 may further include a lower cover plate 124, which is covered on the lower side of the ejector circuit board 111 to cover the ejector circuit board 111 so that the test points on the ejector circuit board 111 fully contact the ejector block 122, thereby achieving a reliable electrical connection between the ejector board 11 and the board W to be tested.

[0069] Optionally, the lower cover plate 124 , the ejector plate 11 and the fixing frame 121 may be fixed by bolts or screws, etc., so that the three are tightly fitted together, ensuring that the test points on the ejector circuit board 111 fully contact the ejector block 122 .

[0070] Alternatively, if Figure 2 and Figure 3 As shown, the fixing tool 12 may further include a pressing block 125, a buckle 126 and a handle 127; the pressing block 125 is arranged on the lower surface of the upper cover 123, so that after the upper cover 123 is closed, the board to be tested W is tightly pressed down, so that the points to be tested on the board to be tested W fully contact the ejector block 122; the buckle 126 is correspondingly arranged on the upper cover 123, so that after the upper cover 123 is closed, the fixing frame 121 is clamped, so that the pressing block 125 continuously presses down the board to be tested W; the handle 127 is correspondingly arranged on the upper cover 123, so that the tester can open or close the upper cover 123.

[0071] According to the above embodiments of the present application, Figures 1 to 4 As shown, the split test device 1 may further include a host computer 40; the test control board 20 may further include an external connector 23 electrically disposed on the control circuit board 21, the external connector 23 being electrically connected to the host computer 40, so that the test control board 20 can communicate with the host computer 40, so as to upload the tested data to the host computer 40, so as to facilitate subsequent backtracking or tracing of the test data. It is understandable that the external connector 23 mentioned in the present application may be, but is not limited to, implemented as a USB interface, and in addition to being communicatively connected to the host computer 40, it may also be electrically connected to the power supply 2, and this application will not repeat it in detail.

[0072] Alternatively, if Figure 4 As shown, the control circuit board 21 may include a circuit substrate 211, a control circuit 212 disposed on the circuit substrate 211, and a functional circuit group disposed on the circuit substrate 211; the control circuit 212 is electrically connected to the external connector 23 and the control end connector 22; the functional circuit group is electrically connected to the external connector 23, the control circuit 212, and the control end connector 22, and is used to perform corresponding functional tasks under the control of the control circuit 212. It can be understood that the control circuit mentioned in the present application can be, but is not limited to, implemented as an MCU circuit, i.e., a microcontroller unit circuit.

[0073] Alternatively, if Figure 4 As shown, the functional circuit group may include a power conversion circuit 213, a voltage and current detection circuit 214 and a load switch circuit 215; the power conversion circuit 213 is electrically connected to the external connector 23 and the control circuit 212; the voltage and current detection circuit 214 is electrically connected to the power conversion circuit 213 and the control circuit 212; the load switch circuit 215 is electrically connected to the power conversion circuit 213 and the control end connector 22.

[0074] In this way, when the board to be tested W is loaded into the ejector fixture 10, the grounded in-place signal test point on the board to be tested W will change from the original high level to a low level: at this time, the control circuit 212 will detect the change of the in-place signal to determine that the board to be tested W has been put in; then, the control circuit 212 starts to detect the model of the board to be tested W, and controls the power conversion circuit 213 to output the corresponding voltage according to the different models, and uploads information to the host computer 40 through the external connector 23 to complete the test preparation; thereafter, the host computer 40 sends a start command to the control circuit 212 through the external connector 23, and the control circuit 212 controls the power conversion circuit 213 and the load The switch circuit 215 continuously provides power to the board to be tested W through the control end connector 22; finally, the control circuit 212 controls the voltage and current detection circuit 214 to detect the voltage and current of the board to be tested W, and uploads the voltage and current test data to the host computer 40 to determine whether the data is normal; if the data is abnormal, the host computer 40 immediately notifies the control circuit 212 to disconnect the load switch circuit 215 to prevent the faulty board to be tested from damaging the test device; if the data is normal, the host computer 40 needs to complete other test items, and after all tests are completed, send a stop command, and the control circuit 212 controls the power conversion circuit 213 to power off and wait for the next board to be tested W to be loaded. It can be understood that in addition to the test points corresponding to the positions of the test points on the board to be tested W, the ejector circuit board 111 is also provided with a plurality of test points for model determination, so that the control circuit 212 can determine the model of the board to be tested W by detecting the signals on the plurality of test points for model determination.

[0075] Optionally, the host computer 40 of the present application can be connected to the MES system (Manufacturing Execution System), and the test data can be uploaded to the host computer 40, so all the test data obtained in the present application can be automatically uploaded to the MES system through the host computer 40, thereby achieving traceability of the test data.

[0076] It is worth noting that the board to be tested W mentioned in the present application can be a single board to be tested (i.e., a PCBA single board), or a board to be tested formed by splicing multiple single boards to be tested (i.e., a PCBA spliced ​​board). For different types of single boards to be tested, the split test device 1 of the present application only needs to replace the ejector tooling 10 accordingly, without the need to develop multiple special test boards as in the prior art.

[0077] However, for the panel to be tested, the prior art generally only supports testing of a single board after splitting, or testing the panel by manually plugging and unplugging cables, which further leads to low test efficiency and easily misses a single board in the entire panel to be tested. In order to solve this problem, the split test device 1 of the present application can use the control circuit 212 and the path switching module to automatically switch the test path to automatically test the panel to be tested, which not only solves the problem of missing a single board, but also greatly improves the test efficiency.

[0078] Specifically, Figure 4 As shown, the control circuit board 21 can further include a path switching circuit 216, which is electrically connected to the control circuit 212, the power conversion circuit 213, the control end connector 22 and the external connector 23; the control circuit 212 can control the path switching circuit 216 to switch to different channels, so that the host computer 40 is automatically connected to different boards in the panel to be tested, thereby realizing the function of automatically switching the board to be tested.

[0079] More specifically, if Figure 4 As shown, the path switching circuit 216 may include, but is not limited to, a USB switching circuit 2161, a UART switching circuit 2162, and a GPIO switching circuit 2163 arranged in parallel. It is understandable that the USB mentioned in the present application refers to the Universal Serial Bus; the UART mentioned in the present application refers to the Universal Asynchronous Receiver / Transmitter; the GPIO mentioned in the present application refers to the General Purpose I / O Ports; in addition, the switching circuit mentioned in the present application can be designed using a USB switching switch chip and a multi-channel analog switching switch chip. This type of chip can only conduct one of the channels according to the different input control signals. Therefore, the control circuit 212 of the present application only needs the command of the host computer 40 to output different control signals, so that different channels of the switching circuit can be selected, so that the host computer 40 is connected to different boards to be tested in the board to be tested, thereby realizing the function of automatically switching the board to be tested.

[0080] In this way, when the host computer 40 sends the first start command to the control circuit 212 through the external connector 23, notifying the control circuit 212 to start testing the first single board to be tested in the panel to be tested, the control circuit 212 starts to switch the test path after receiving the first start command: the control circuit 212 controls the enable signal of the first circuit in the load switch circuit 215 through the GPIO switching circuit 2163, controls the power conversion circuit 213 to supply power to the first single board to be tested, and controls the first circuit in the load switch circuit 215 to be turned on before receiving the second start command sent by the host computer 40 (the command to start testing the second single board to be tested in the panel to be tested), and continuously supplies power to the first single board to be tested. At this time, the control circuit 212 also controls the USB switching circuit 2161, the UART switching circuit 2162, and the GPIO switching circuit 2163 to switch to the first channel by outputting different control signals, so that the host computer 40 can directly connect to the first single board to be tested through various switching circuits, so as to test the voltage and current of the first single board to be tested through the voltage and current detection circuit 214, and complete other test items when the voltage and current test data are normal. It can be understood that if the host computer 40 determines that the test data detected by the voltage and current detection circuit 214 has data anomalies, the host computer 40 immediately notifies the control circuit 212 to disconnect the first circuit in the load switch circuit 215 to prevent the faulty single board to be tested from damaging the test device, and directly skips the test of this single board to be tested.

[0081] Afterwards, the host computer 40 sends a second start command to the control circuit 212 through the external connector 23 to notify the control circuit 212 to start testing the second board to be tested in the board to be tested; the test is repeated in this way until all the boards to be tested in the board to be tested have completed the test; finally, the host computer sends a stop command, and the control circuit 212 controls the power conversion circuit 213 to cut off the power and wait for the next board to be tested to be loaded.

[0082] It is worth mentioning that Figure 5 A split testing method according to an embodiment of the present application is shown, which may include the steps of:

[0083] S100: Select matching ejector tooling according to the type of board to be tested;

[0084] S200: Removably and electrically connecting the ejector plate of the ejector tooling to the test control board;

[0085] S300: electrically connecting the test control board to a host computer and a power supply; and

[0086] S400: After the board to be tested is loaded into the fixing fixture of the ejector fixture, the board to be tested is automatically tested.

[0087] It is worth noting that Figure 6 As shown, according to the step S400 in the split test method of the present application, the steps may include:

[0088] S410: Detecting, through the control circuit of the test control board, a change in the grounded in-place signal of the board to be tested to determine whether the board to be tested has been placed;

[0089] S420: In response to the board to be tested being placed, the control circuit starts to detect the model of the board to be tested, so as to control the power conversion circuit of the test control board to output a corresponding voltage according to the different models, and upload information to the host computer through the external connector of the test control board to complete the test preparation;

[0090] S430: Sending a start command to the control circuit through the host computer to control the power conversion circuit and the load switch circuit to continuously provide power to the board to be tested;

[0091] S440: Control the voltage and current detection circuit of the test control board to detect the voltage and current of the board to be tested through the control circuit, and upload the voltage and current test data to the host computer to determine whether the voltage and current test data is normal;

[0092] S450: In response to the test data being normal, completing other test items on the board to be tested through the host computer, and sending a stop command to the control circuit after the test is completed to control the power conversion circuit to be powered off; and

[0093] S460: In response to the test data being abnormal, the host computer notifies the control circuit to disconnect the load switch circuit.

[0094] Alternatively, if Figure 7 As shown, in an example of the present application, step S430 may include the following steps:

[0095] S431: sending a first start command to the control circuit through the host computer to notify the control circuit to start testing the first board to be tested in the board assembly to be tested;

[0096] S432: After the control circuit receives the first start command, the path switching circuit controls the enable signal of the first circuit in the load switch circuit to control the power conversion circuit to supply power to the first board to be tested;

[0097] S433: outputting different control signals through the control circuit to control the USB switching circuit, the UART switching circuit and the GPIO switching circuit of the path switching circuit to switch to the first channel, so that the host computer is directly connected to the first board to be tested for testing; and

[0098] S434: Sending a next start command to the control circuit through the host computer to start testing the next board to be tested in the board to be tested, until all boards to be tested in the board to be tested are tested.

[0099] It is worth noting that according to the above embodiments of the present application, Figure 5 As shown, the split test method may further include the steps of:

[0100] S500: Receive the test data uploaded by the test control board through the host computer and automatically upload it to the MES system.

[0101] For example, Figure 8 As shown, the specific process of the split test method of the present application in testing PCBA panels can be as follows: 1) Use cables to connect the split test device, the host computer and the power supply; 2) Place the panel to be tested into the ejector fixture of the split test device, and close the upper cover; 3) The test control board of the split test device detects the model of the panel to be tested, switches the voltage, and informs the host computer through the external connector; 4) The host computer sends a start command to the control circuit of the test control board to start testing the first single board in the panel to be tested; 5) The control circuit controls the load switch Circuit, USB switching circuit, UART switching circuit and GPIO switching circuit to turn on the first channel; 6) the voltage and current detection circuit of the test control board tests the voltage and current of the first single board, and uploads it to the host computer; 7) the host computer receives the test data uploaded by the test control board and completes other test items, and automatically uploads all test data to the MES system; 8) repeat steps 4) to 7) until the test of the Nth single board in the puzzle to be tested is completed; 9) the host computer sends a stop command, the test control board controls the power conversion circuit to power off, and waits for the next puzzle to be tested to be loaded.

[0102] The technical features of the above embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0103] The above embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. Split-type testing device, characterized in that: include: An ejector tool, the ejector tool comprising an ejector plate and a fixing tool for fixing and installing a board to be tested, the ejector plate being fixedly connected to the fixing tool for electrically connecting the board to be tested fixedly mounted via the fixing tool; and A test control board is detachably and electrically connected to the ejector plate and is used to be electrically connected to a power source to test the board to be tested.

2. The split-type testing device according to claim 1, characterized in that: The ejector plate includes an ejector circuit board and an ejector end connector which can be electrically arranged on the ejector circuit board; the test control board includes a control circuit board and a control end connector which can be electrically arranged on the control circuit board, and the control end connector and the ejector end connector can be electrically plugged.

3. The split testing device according to claim 2, characterized in that: The ejector end connector and the control end connector are respectively board-to-board connectors that match each other. The ejector end connector and the control end connector are directly plugged into each other to electrically fix the control circuit board and the ejector circuit board.

4. The split testing device according to claim 2, characterized in that: The ejector end connector and the control end connector are respectively FPC connectors that match each other. The ejector end connector and the control end connector are indirectly plugged into each other through a flexible circuit board to electrically connect the control circuit board and the ejector circuit board.

5. The split-type testing device according to claim 2, characterized in that: The fixing fixture comprises a fixing frame for placing the board to be tested, an ejector block penetrating the fixing frame, and an upper cover plate covering the upper side of the fixing frame; the ejector circuit board of the ejector plate is fixedly mounted on the lower side of the fixing frame.

6. The split-type testing device according to claim 5, characterized in that: The upper cover plate is rotatably connected to the fixing frame; the fixing fixture further comprises a lower cover plate, and the lower cover plate is arranged on the lower side of the ejector circuit board.

7. The split-type testing device according to claim 6, characterized in that: The fixing tool further includes a pressing block, a buckle and a handle; the pressing block is arranged on the lower surface of the upper cover plate; the buckle and the handle are correspondingly arranged on the upper cover plate.

8. The split-type testing device according to any one of claims 2 to 7, characterized in that: The split-type test device further includes a host computer; the test control board further includes an external connector electrically disposed on the control circuit board, and the external connector is electrically connected to the host computer.

9. The split-type testing device according to claim 8, characterized in that: The control circuit board includes a circuit substrate, a control circuit arranged on the circuit substrate, and a functional circuit group arranged on the circuit substrate; the control circuit is electrically connected to the external connector and the control end connector; the functional circuit group is electrically connected to the external connector, the control circuit, and the control end connector.

10. The split-type testing device according to claim 9, characterized in that: The functional circuit group includes a power conversion circuit, a voltage and current detection circuit, and a load switch circuit; the power conversion circuit is electrically connected to the external connector and the control circuit; the voltage and current detection circuit is electrically connected to the power conversion circuit and the control circuit; the load switch circuit is electrically connected to the power conversion circuit and the control end connector.

11. The split testing device according to claim 10, characterized in that: The control circuit board further includes a path switching circuit, which is electrically connected to the control circuit, the power conversion circuit, the control end connector and the external connector; the control circuit is used to control the path switching circuit to switch to different channels so that the host computer is automatically connected to different boards in the board to be tested.

12. The split testing device according to claim 11, characterized in that: The path switching circuit includes a USB switching circuit, a UART switching circuit and a GPIO switching circuit which are arranged in parallel.

13. A split test method, characterized in that: Includes steps: Select the matching ejector tooling according to the type of board to be tested; Removably and electrically connecting the ejector plate of the ejector tooling to the test control board; The test control board is electrically connected to the host computer and the power supply; as well as After the board to be tested is loaded into the fixing fixture of the ejector fixture, the board to be tested is automatically tested.

14. The split testing method according to claim 13, characterized in that: The step of automatically testing the board to be tested after the board to be tested is loaded into the fixing fixture of the ejector fixture comprises the steps of: By means of the control circuit of the test control board, a change in the grounded in-place signal of the board to be tested is detected to determine whether the board to be tested has been put in; In response to the board to be tested being placed, the control circuit starts to detect the model of the board to be tested, so as to control the power conversion circuit of the test control board to output the corresponding voltage according to the different models, and upload information to the host computer through the external connector of the test control board to complete the test preparation; Sending a start command to the control circuit through the host computer to control the power conversion circuit and the load switch circuit to continuously provide power to the board to be tested; Through the control circuit, the voltage and current detection circuit of the test control board is controlled to detect the voltage and current of the board to be tested, and the voltage and current test data are uploaded to the host computer to determine whether the voltage and current test data are normal; In response to the test data being normal, the host computer completes other test items on the board to be tested, and after the test is completed, sends a stop command to the control circuit to control the power conversion circuit to be powered off; and In response to the test data being abnormal, the control circuit is notified by the host computer to disconnect the load switch circuit.

15. The split testing method according to claim 14, characterized in that: The step of sending a start command to the control circuit through the host computer to control the power conversion circuit and the load switch circuit to continuously provide power to the board to be tested includes the following steps: Sending a first start command to the control circuit through the host computer to notify the control circuit to start testing the first board to be tested in the board to be tested; After the control circuit receives the first start command, the enable signal of the first circuit in the load switch circuit is controlled through the path switching circuit to control the power conversion circuit to supply power to the first single board to be tested; Outputting different control signals through the control circuit to control the USB switching circuit, the UART switching circuit and the GPIO switching circuit of the path switching circuit to switch to the first channel, so that the host computer is directly connected to the first single board to be tested for testing; as well as The host computer sends a next start command to the control circuit to start testing the next board to be tested in the board to be tested, until all boards to be tested in the board to be tested are tested.

16. The split testing method according to any one of claims 13 to 15, characterized in that: The split test method further comprises the steps of: The host computer receives the test data uploaded via the test control board and automatically uploads it to the MES system.

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