Equipment for FCT test of circuit board

Abstract

The utility model relates to the technical field of FCT test, in particular to a device for FCT test of a circuit board, which comprises a test cabinet, and a control and test module, an execution module and an input and output module are arranged in the test cabinet. The control and test module comprises a power supply assembly, a test assembly and a PC assembly. The execution module comprises an execution jig, and the execution jig is used for loading a tested circuit board and electrically connecting the cable of the test assembly with the tested circuit board. FCT test requirements of existing circuit boards of different models can be met by replacing the execution jig, and the investment cost of FCT test equipment in the research and development process of the circuit boards is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of FCT testing, and particularly to a device for FCT testing of circuit boards. Background Art

[0002] The FCT testing of circuit boards, whose full name is Functional Circuit Test, is a testing method that provides a simulated operating environment (excitation and load) for the circuit board, enables it to work in various design states, and thus obtains the parameters of each state to verify the quality of the circuit board function.

[0003] Generally, the FCT testing equipment for circuit boards is dedicated equipment, that is, one testing device tests one circuit board, and is suitable for full inspection or sampling inspection of a single model circuit board during mass production.

[0004] However, the FCT testing equipment for circuit boards is also applicable during the R & D process of circuit boards, that is, for testing circuit boards with small batch proofing. In this case, it is not possible to customize a set of FCT testing equipment for each small batch tested current board. Based on this, the present utility model application provides a device that can replace some accessories of the existing FCT testing equipment according to the specifications of the circuit board to be tested, so as to achieve FCT testing of different model circuit boards. Summary of the Utility Model

[0005] In view of the above problems, a device for FCT testing of circuit boards is provided. By replacing the execution fixture, the FCT testing requirements of different model circuit boards can be met, greatly reducing the investment cost of FCT testing equipment during the R & D process of circuit boards.

[0006] To solve the problems of the existing technology, the present utility model provides a device for FCT testing of circuit boards, which includes a test cabinet. A control and testing module, an execution module, and an input and output module are arranged in the test cabinet; the control and testing module includes: a power supply component for connecting to the power system and accessing power; a testing component and a PC component. The testing component is connected to the circuit board to be tested through a cable, and the testing component is connected to the PC component through a cable. The PC component is used to write test instructions into the testing component to perform FCT testing on the circuit board to be tested; the execution module includes: an execution fixture for loading the circuit board to be tested and electrically connecting the cable of the testing component to the circuit board to be tested; the input and output module includes: a display component connected to the PC component for testing status and test results; a keyboard and mouse component for operating the PC component; a button component for controlling the action of the execution fixture.

[0007] Preferably, the test cabinet includes an upper cabinet body, a lower cabinet body, and a middle cabinet body disposed between the upper cabinet body and the lower cabinet body. The front side of the upper cabinet body is open. The middle cabinet body is provided with a pull-out drawer. The lower cabinet body is provided with an openable cabinet door. The power supply assembly, the gas source assembly, and the PC machine assembly are disposed in the lower cabinet body. The execution jig and the display assembly are disposed in the upper cabinet body. The keyboard and mouse assembly is disposed in the drawer. The button assembly is disposed on the front side of the middle cabinet body. The test assembly is disposed in the execution jig.

[0008] Preferably, the execution jig includes: a frame body; a bottom plate disposed horizontally; a loading plate mounted on the bottom plate, provided with a loading groove corresponding to the outer contour of the circuit board to be tested, and a plurality of test holes corresponding to the test points on the circuit board to be tested are disposed at the bottom of the loading groove; a probe assembly disposed on the back of the loading plate and provided with probes passing through the test holes from the back of the loading plate; all the probes are electrically connected to the test assembly through cables; a lower pressing plate disposed directly above the loading plate, and the loading plate is provided with a plurality of downwardly extending pressing columns, and each pressing column is coaxially corresponding to a test hole; a pressing drive disposed on the frame body, and the lower pressing plate is connected to the output end of the pressing drive.

[0009] Preferably, the control and test module further includes a gas source assembly for connecting to a compressed gas system and accessing compressed gas; the pressing drive is a cylinder, and the cylinder is connected to the gas source assembly for gas supply.

[0010] Preferably, the pressing drive is an electric cylinder, and the electric cylinder is connected to the power supply assembly for power supply.

[0011] Preferably, a box body for loading the test assembly is disposed at the bottom of the bottom plate, and the upper end of the box body is open.

[0012] Preferably, the bottom plate is hinged to the box body.

[0013] The beneficial effect of the present utility model compared with the prior art is that by replacing the execution jig, the FCT test requirements of different types of circuit boards can be met, and the investment cost of the FCT test equipment in the circuit board research and development process is greatly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a perspective view of an apparatus for FCT testing of a circuit board according to the present utility model.

[0015] Figure 2 is a front view of an apparatus for FCT testing of a circuit board according to the present utility model.

[0016] Figure 3 is a perspective view of the execution jig of an apparatus for FCT testing of a circuit board according to the present utility model in a state where the lower pressing plate is pressed down. Figure 1 .

[0017] Figure 4 A three-dimensional view of the execution fixture in a state where the lower pressing plate is pressed down in a device for FCT testing of a circuit board according to the present utility model. Figure 2 .

[0018] Figure 5 A front view of the execution fixture in a state where the lower pressing plate is pressed down in a device for FCT testing of a circuit board according to the present utility model.

[0019] Figure 6 A three-dimensional view of the execution fixture in a state where the lower pressing plate is raised in a device for FCT testing of a circuit board according to the present utility model.

[0020] Figure 7 A front view of the execution fixture in a state where the lower pressing plate is raised in a device for FCT testing of a circuit board according to the present utility model.

[0021] Figure 8 A top view of the loading plate on the bottom plate in a device for FCT testing of a circuit board according to the present utility model.

[0022] Figure 9 A three-dimensional view of the bottom plate of the execution fixture in a flipped state in a device for FCT testing of a circuit board according to the present utility model.

[0023] The reference numerals in the figure are: 100, the circuit board to be tested; 200, the upper cabinet; 300, the lower cabinet; 400, the middle cabinet; 401, the drawer; 402, the button assembly; 500, the execution fixture; 501, the frame; 502, the bottom plate; 503, the loading plate; 5031, the loading slot; 504, the lower pressing plate; 505, the lower pressing driver; 506, the lower pressing column; 507, the box body; 600, the display assembly. Specific embodiments

[0024] In order to further understand the features, technical means, and specific purposes and functions achieved by the present utility model, the present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0025] Refer to Figure 1 and Figure 2As shown in the figure, a device for FCT testing of circuit boards includes a test cabinet, in which a control and test module, an execution module, and an input / output module are provided. The control and test module includes: a power supply component for connecting to a power system and accessing power; a test component and a PC component. The test component is connected to the circuit board 100 to be tested through a cable, and the test component is connected to the PC component through a cable. The PC component is used to write test instructions into the test component to perform FCT testing on the circuit board 100 to be tested. The execution module includes: an execution fixture 500 for loading the circuit board 100 to be tested and electrically connecting the cable of the test component to the circuit board 100 to be tested. The input / output module includes: a display component 600 connected to the PC component for testing status and test results; a keyboard and mouse component for operating the PC component; a button component 402 for controlling the action of the execution fixture 500. Since the main function of the execution component is to load the tested circuit board and electrically connect the circuit board 100 to be tested to the test component through a cable, when the model of the circuit board 100 to be tested changes, only the execution component needs to be replaced, and there is no need to modify the entire FCT test device.

[0026] As Figure 1 and Figure 2 shown in the figure, the test cabinet includes an upper cabinet 200, a lower cabinet 300, and a middle cabinet 400 disposed between the upper cabinet 200 and the lower cabinet 300. The front side of the upper cabinet 200 is open. The middle cabinet 400 is provided with a pull-out drawer 401. The lower cabinet 300 is provided with an openable cabinet door. The power supply component, the gas source component, and the PC component are disposed in the lower cabinet 300. The execution fixture 500 and the display component 600 are disposed in the upper cabinet 200. The keyboard and mouse component is disposed in the drawer 401. The button component 402 is disposed on the front side of the middle cabinet 400. The test component is disposed in the execution fixture 500.

[0027] Furthermore, as Figures 3 to 8As shown in the figure, the execution fixture 500 includes: a frame body 501; a bottom plate 502 arranged horizontally; a loading plate 503, installed on the bottom plate 502, provided with a loading groove 5031 that conforms to the outer contour of the circuit board 100 to be tested. The bottom of the loading groove 5031 is provided with a number of test holes corresponding to the test points on the circuit board 100 to be tested; a probe assembly (not shown in the figure), arranged on the back of the loading plate 503 and provided with probes passing through the test holes from the back of the loading plate 503. It should be noted that the bottom plate 502 is also provided with through holes for the probes to pass through, and the specific test assembly is arranged on the back of the bottom plate 502; all probes are electrically connected to the test assembly through cables; a lower pressing plate 504, arranged directly above the loading plate 503. The loading plate 503 is provided with a number of downward-extending pressing columns 506. Each pressing column 506 is coaxially corresponding to a test hole. The function of the pressing column 506 is to ensure that the probe can stably contact the corresponding detection point on the circuit board 100 to be tested; a lower pressing driver 505, installed on the frame body 501, and the lower pressing plate 504 is connected to the output end of the lower pressing driver 505.

[0028] It should be further noted that when the circuit board 100 to be tested changes, it is not necessary to replace the entire execution fixture 500. Only the loading plate 503 and the lower pressing plate 504 need to be replaced, and then the probes are electrically connected to the test assembly through cables according to the number of probes required for testing. Since the test assembly belongs to the prior art in the field of FCT test equipment, it will not be elaborated in the present utility model.

[0029] Furthermore, as Figure 1 shown, the control and test module further includes a gas source assembly. The gas source assembly is used to connect to a compressed gas system and access compressed gas; the lower pressing driver 505 is a cylinder, and the cylinder is connected to the gas source assembly for gas supply.

[0030] The lower pressing driver 505 can also be an electric cylinder, and the electric cylinder is connected to the power supply assembly for power supply.

[0031] As Figure 9 shown, the bottom of the bottom plate 502 is provided with a box body 507 for loading the test assembly, and the upper end of the box body 507 is open. Preferably, the bottom plate 502 is hinged to the box body 507. The test assembly can be directly installed on the back of the bottom plate 502, or it can be placed in the box body 507 without being directly connected to the bottom plate 502. Since the probes in the FCT test equipment are prior art, the structure of the probes will not be elaborated in this application.

[0032] The above embodiments only represent one or several implementation manners of the present utility model. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the appended claims.

Claims

1. An apparatus for FCT testing of a circuit board, comprising a test cabinet, characterized in that, The test cabinet is provided with a control and test module, an execution module, and an input / output module; The control and test module includes: A power supply component for connecting to the power system and accessing power; A test component and a PC component. The test component is connected to the circuit board (100) to be tested through a cable, and the test component is connected to the PC component through a cable. The PC component is used to write test instructions into the test component to perform FCT tests on the circuit board (100) to be tested; The execution module includes: An execution fixture (500) for loading the circuit board (100) to be tested and electrically connecting the cable of the test component to the circuit board (100) to be tested; The input / output module includes: A display component (600) connected to the PC component for testing status and test results; A keyboard and mouse component for operating the PC component; A button component (402) for controlling the action of the execution fixture (500).

2. The device for FCT testing of circuit boards according to claim 1, characterized in that, The test cabinet includes an upper cabinet body (200), a lower cabinet body (300), and a middle cabinet body (400) disposed between the upper cabinet body (200) and the lower cabinet body (300). The front side of the upper cabinet body (200) is open. The middle cabinet body (400) is provided with a pull-out drawer (401). The lower cabinet body (300) is provided with an openable cabinet door; the power supply component, the gas source component, and the PC component are disposed in the lower cabinet body (300), the execution fixture (500) and the display component (600) are disposed in the upper cabinet body (200), the keyboard and mouse component is disposed in the drawer (401), the button component (402) is disposed on the front side of the middle cabinet body (400), and the test component is disposed in the execution fixture (500).

3. A device for FCT testing of a circuit board according to claim 1 or 2, characterized in that, The execution fixture (500) includes: A frame body (501); having a horizontally disposed bottom plate (502); A loading plate (503) installed on the bottom plate (502), provided with a loading groove (5031) conforming to the outer contour of the circuit board (100) to be tested. The bottom of the loading groove (5031) is provided with a plurality of test holes corresponding to the test points on the circuit board (100) to be tested; A probe assembly disposed on the back of the loading plate (503) and provided with probes passing through the test holes from the back of the loading plate (503); All probes are electrically connected to the test component through cables; A lower pressing plate (504) disposed directly above the loading plate (503). The loading plate (503) is provided with a plurality of downwardly extending pressing columns (506), and each pressing column (506) is coaxially corresponding to a test hole; A lower pressing driver (505) installed on the frame body (501), and the lower pressing plate (504) is connected to the output end of the lower pressing driver (505).

4. The device for FCT testing of circuit boards according to claim 3, wherein The control and test module further includes a gas source component for connecting to the compressed gas system and accessing compressed gas; the lower pressing driver (505) is a cylinder, and the cylinder is connected to the gas source component for gas supply.

5. The device for FCT testing of a circuit board according to claim 3, wherein The lower pressing driver (505) is an electric cylinder, and the electric cylinder is connected to the power supply component for power supply.

6. The device for FCT testing of a circuit board according to claim 3, characterized in that, The bottom of the bottom plate (502) is provided with a box body (507) for loading the test component, and the upper end of the box body (507) is open.

7. The device for FCT testing of a circuit board according to claim 6, characterized in that, The bottom plate (502) is hinged to the box body (507).

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