A coupler printed board testing device

Abstract

The utility model discloses a coupler printed board testing arrangement. The utility model discloses a printed board testing frock, controller and even with the controller electric connection excitation signal and collection data module, switch matrix module, power module, printed board testing frock with switch matrix module passes through the electric connection of connector, printed board testing frock with coupler printed board is adapted, switch matrix module includes test channel switching module and FPGA instruction analysis control module, test channel switching module is electric connection with excitation signal and collection data module, printed board testing frock with FPGA instruction analysis control module electric connection, FPGA instruction analysis control module passes through RS232 interface with controller electric connection. The utility model discloses the technical field of circuit board automatic testing.

Description

Technical Field

[0001] This utility model relates to a coupler printed circuit board testing device, and particularly to a 1553B coupler printed circuit board testing device. Background Technology

[0002] The 1553B bus is renowned for its reliability and holds a dominant position in the global military. It is widely used in satellites, rockets, missiles, aircraft, ships, special vehicles, and testing equipment. The 1553B bus cable network consists of a wide variety of components (including cables, couplers, terminating resistors, connectors, etc.). As a key component of the 1553B bus cable, the coupler printed circuit board must undergo rigorous and scientific testing before it can be assembled into the target system. Corresponding testing equipment must also be developed in tandem.

[0003] Traditionally, the testing of 1553B coupler printed circuit boards has relied on manual, distributed testing methods. This requires various separate instruments (such as signal generators, multimeters, and oscilloscopes), resulting in complex wiring connections. The testing process is cumbersome, time-consuming, susceptible to human error, and inconsistent. This approach fails to meet the demands of large-scale cable production. Therefore, a new, scientific testing method is needed to achieve intelligent, automated, high-precision, and stable testing, providing an excellent solution for the inspection and testing of coupler printed circuit boards at various stages of production and assembly. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a coupler printed circuit board testing device.

[0005] The technical solution adopted by this utility model is as follows: This utility model includes a printed circuit board (PCB) test fixture, a controller, and an excitation signal and data acquisition module, a switch matrix module, and a power supply module, all electrically connected to the controller. The PCB test fixture and the switch matrix module are electrically connected via connectors. The PCB test fixture is adapted to the coupler PCB. The switch matrix module includes a test channel switching module and an FPGA instruction parsing and control module. The test channel switching module is electrically connected to the excitation signal and data acquisition module, the PCB test fixture, and the FPGA instruction parsing and control module, respectively. The FPGA instruction parsing and control module is electrically connected to the controller via an RS232 interface. Therefore, the switch matrix module is connected to the excitation signal and data acquisition module via internal cables, the PCB test fixture is connected to the switch matrix module via external connectors, the controller sends instructions via the RS232 interface, which are parsed by the FPGA instruction parsing and control module. The control channel switching module switches the test channels, enabling the input excitation signal and the acquired data signal.

[0006] Furthermore, the excitation signal and data acquisition module includes an integrated oscilloscope signal source module, a multimeter module, and an insulation resistance testing module that are electrically connected to each other. The integrated oscilloscope signal source module provides the excitation signal required for testing and acquires the response signal on the coupler printed circuit board for analysis. The multimeter module measures parameters such as voltage and current in the circuit to ensure that the circuit is in normal working condition. The insulation resistance testing module detects the insulation performance on the coupler printed circuit board to prevent circuit failures caused by poor insulation. These modules work together to complete a comprehensive test of the coupler printed circuit board.

[0007] Furthermore, the testing device includes a testing chassis and a flip-top plate hinged to the top surface of the testing chassis, and a flip-side plate hinged to the front surface of the testing chassis. The controller includes a monitor, a mouse, a keyboard, and a computer. The computer is fixed inside the testing chassis, the monitor is integrated and embedded in the bottom surface of the flip-top plate, the keyboard is fixed to the flip-side plate, and the mouse is stored inside the flip-side plate.

[0008] Furthermore, the top surface of the test chassis is provided with guide holes around all four sides, and the bottom surface of the printed circuit board test fixture is provided with guide posts that are adapted to the guide holes around all four sides. The connectors are semi-embedded at both the front and rear ends of the top surface of the test chassis. When the printed circuit board test fixture is inserted into the top surface of the test chassis through the cooperation of the guide posts and the guide holes, the two connectors are connected through the printed circuit board test fixture.

[0009] Furthermore, the printed circuit board testing fixture includes a mold upper panel, an interface PCB board, and a mold lower panel stacked sequentially from top to bottom. Printed circuit board assemblies are symmetrically mounted on the mold upper panel. Each printed circuit board assembly includes a carrier plate. The carrier plate has several mold holes adapted to the coupler printed circuit board. Each mold hole has probes at both ends that connect to the interface PCB board. The top contact point of each probe is used to fully contact the wall of the coupler printed circuit board hole. The probes can simultaneously contact without interfering with the fixation of the coupler printed circuit board. A clamping plate adapted to the carrier plate is hinged to one side of the carrier plate. The clamping plate has several clearance holes adapted to the mold holes. A pressing block is provided at both ends of each clearance hole. A fixing clamp is provided at both ends of the other side of the carrier plate. The mold lower panel has a connection clearance opening through which the connector connects to the interface PCB board.

[0010] The beneficial effects of this utility model are: it provides a brand-new scientific testing device to achieve the requirements of intelligent testing, automated testing, high testing accuracy, and stable reliability, providing an excellent solution for the inspection and testing of coupler printed circuit boards at various stages of production and assembly; the modern automatic centralized testing method utilizes a highly integrated dedicated automatic testing system to complete the test automatically in one stop; the testing process is simple, the operation steps are simple, the process basically requires no manual intervention, the testing time is short, and the testing consistency is high. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is an exploded view of the present invention; Figure 3 This is a simplified circuit diagram of the present invention; Figure 4 This is a functional block diagram of the switch matrix module; Figure 5 This is a schematic diagram of the printed circuit board testing fixture; Figure 6 This is an exploded view of the printed circuit board testing fixture. Detailed Implementation

[0012] like Figures 1 to 6As shown, in this embodiment, the present invention includes a printed circuit board testing fixture 1, a controller 2, and an excitation signal and data acquisition module 3, a switch matrix module 4, and a power supply module 5, all electrically connected to the controller 2. The printed circuit board testing fixture 1 and the switch matrix module 4 are electrically connected via a connector 6. The printed circuit board testing fixture 1 is adapted to the coupler printed circuit board 7. The switch matrix module 4 includes a test channel switching module 41 and an FPGA instruction parsing and control module 42. The test channel switching module 41 is electrically connected to the excitation signal and data acquisition module 3, the printed circuit board testing fixture 1, and the FPGA instruction parsing and control module 42, respectively. The FPGA instruction parsing and control module 42 is connected to the power supply module 5 via an RS232 interface 8. The controller 2 is electrically connected; the test channel switching module 41 uses an Omron signal relay, and is a combined system with the FPGA instruction parsing and control module 42 as the control core and the Omron signal relay as the execution element. It is used to realize high-precision and high-reliability signal switching and circuit control. Its core logic is: the FPGA instruction parsing and control module generates precise control signals through programmable logic, drives the Omron signal relay to complete circuit on / off, signal isolation or path switching, and has the flexible control capability of FPGA and the high stability of Omron relay. It also has low interference and low loss switching technology; and is equipped with two connectors 6 of model HARTING-09032646845 to connect to the printed circuit board test fixture 1.

[0013] In this embodiment, the excitation signal and data acquisition module 3 can simulate 1M / 4M 1553B signal excitation and acquire test data, featuring highly reliable and stable standard 1553B data signal technology. Specifically, the excitation signal and data acquisition module 3 includes an oscilloscope signal source integrated module, a multimeter module, and an insulation resistance test module that are electrically connected to each other.

[0014] In this embodiment, the testing device includes a testing chassis 9, a flip-top plate 91 hinged to the top surface of the testing chassis 9, and a flip-side plate 92 hinged to the front surface of the testing chassis 9. Handles are provided on the front surface of the testing chassis 9 at both ends of the flip-side plate 92 for easy carrying of the testing device. The controller 2 includes a display 21, a mouse, a keyboard 22, and a computer. The computer is fixed inside the testing chassis 9. Cooling fans are provided at both ends inside the testing chassis. The display 21 is embedded in the bottom surface of the flip-top plate 91. The keyboard 22 is fixed to the flip-side plate 92, and the mouse is stored inside the flip-side plate 92. The computer integrates testing software that can analyze coupler printed circuit board test data and has functions such as continuity testing, insulation resistance testing, dynamic electrical performance testing, waveform integrity testing, common-mode rejection testing, and input impedance testing.

[0015] In this embodiment, the power module 5 is used to provide ±15V / +5V power for powering the internal equipment of the chassis, and can be connected to an external 220V power supply.

[0016] In this embodiment, the top surface of the test chassis 9 is provided with guide holes 93 around all four sides, and the bottom surface of the printed circuit board test fixture 1 is provided with guide posts that are adapted to the guide holes 93 around all four sides. The front and rear ends of the top surface of the test chassis 9 are semi-embedded with the connectors 6. When the printed circuit board test fixture 1 is inserted into the top surface of the test chassis 9 through the cooperation of the guide posts and the guide holes 93, the two connectors 6 are connected through the printed circuit board test fixture 1.

[0017] In this embodiment, the printed circuit board testing fixture 1 includes a mold upper panel 11, an interface PCB board 12, and a mold lower panel 13 stacked sequentially from top to bottom. Printed circuit board assemblies are symmetrically mounted on the mold upper panel 11. Each set of printed circuit board assemblies includes a carrier plate 14. The carrier plate 14 has five mold holes 15 adapted to the coupler printed circuit board 7. Each mold hole 15 has probes 16 at both ends connected to the interface PCB board 12. The top contact point of the probes 16 is used to fully contact the hole wall of the coupler printed circuit board 7. The probes 16 can simultaneously contact without interfering with the fixation of the coupler printed circuit board 7. A clamping plate 17 adapted to the carrier plate 14 is hinged to one side of the carrier plate 14. Five clearance holes 18 are provided to match the mold holes 15. Each clearance hole 18 has a pressing block 19 at both ends. Each side of the carrier plate 14 has a fixing clamp 20 at both ends. The mold lower panel 13 has a connection clearance opening. The connector 6 passes through the connection clearance opening and connects to the interface PCB board 12. The printed circuit board testing fixture 1 is used to press the coupler printed circuit board 716 into contact with the probe. The pressing position avoids the components on the coupler printed circuit board 7 through the clearance holes 18. The pressing force and hardness are ensured by the pressing blocks 19 and the fixing clamp 20 to prevent damage to the coupler printed circuit board 7. Furthermore, the mold hole 15 is customized according to the size of the coupler printed circuit board 7 to ensure that the coupler printed circuit board 7 will not move back and forth after being placed on it.

[0018] The controller 2 is used to connect to the excitation signal and data acquisition module 3 via a USB interface according to the GJB289A standard, and to control the excitation signal and data acquisition module 3 to generate a standard excitation signal, acquire response signal data, and perform algorithm analysis on the response signal data to obtain test results.

[0019] During testing, the switch matrix module 4 connects a certain path of the printed circuit board 7 of the coupler under test according to the instruction, thereby testing the printed circuit board 7 of that path. The printed circuit board test fixture has 10 mold holes 15 test positions that are adapted to the holes 7 of the coupler printed circuit board, and can be automatically tested in sequence at one time.

[0020] This invention applies to the technical field of automatic circuit board testing.

[0021] Although the embodiments of this utility model are described with reference to actual solutions, they do not constitute a limitation on the meaning of this utility model. For those skilled in the art, modifications to the implementation schemes and combinations with other schemes based on this specification are obvious.

Claims

1. A coupler printed circuit board testing device, characterized in that: It includes a printed circuit board test fixture (1), a controller (2), and an excitation signal and data acquisition module (3), a switch matrix module (4), and a power supply module (5), all of which are electrically connected to the controller (2). The printed circuit board test fixture (1) and the switch matrix module (4) are electrically connected through a connector (6). The printed circuit board test fixture (1) is adapted to a coupler printed circuit board (7). The switch matrix module (4) includes a test channel switching module (41) and an FPGA instruction parsing control module (42). The test channel switching module (41) is electrically connected to the excitation signal and data acquisition module (3), the printed circuit board test fixture (1), and the FPGA instruction parsing control module (42), respectively. The FPGA instruction parsing control module (42) is electrically connected to the controller (2) through an RS232 interface (8).

2. The coupler printed circuit board testing device according to claim 1, characterized in that: The excitation signal and data acquisition module (3) includes an integrated oscilloscope signal source module, a multimeter module, and an insulation resistance test module that are electrically connected to each other.

3. The coupler printed circuit board testing device according to claim 1, characterized in that: The testing device includes a test chassis (9) and a flip-top plate (91) hinged to the top surface of the test chassis (9) and a flip-side plate (92) hinged to the front surface of the test chassis (9). The controller (2) includes a display (21), a mouse, a keyboard (22) and a computer. The computer is fixed inside the test chassis (9). The display (21) is embedded in the bottom surface of the flip-top plate (91). The keyboard (22) is fixed on the flip-side plate (92). The mouse is stored inside the flip-side plate (92).

4. The coupler printed circuit board testing device according to claim 3, characterized in that: The test chassis (9) has guide holes (93) around its top surface. The bottom surface of the printed circuit board test fixture (1) has guide posts that are compatible with the guide holes (93) around its bottom surface. The front and rear ends of the top surface of the test chassis (9) are semi-embedded with the connectors (6). When the printed circuit board test fixture (1) is inserted into the top surface of the test chassis (9) through the cooperation of the guide posts and the guide holes (93), the two connectors (6) are connected through the printed circuit board test fixture (1).

5. The coupler printed circuit board testing device according to claim 4, characterized in that: The printed circuit board testing fixture (1) includes a mold upper panel (11), an interface PCB board (12), and a mold lower panel (13) stacked sequentially from top to bottom. Printed circuit board assemblies are symmetrically mounted on the mold upper panel (11). The printed circuit board assembly includes a carrier board (14). The carrier board (14) has several mold holes (15) adapted to the coupler printed circuit board (7). Each mold hole (15) has probes (16) at both ends that are connected to the interface PCB board (12). The top contact point of the probe (16) is used to fully contact the hole wall of the coupler printed circuit board (7). The probe (16) can simultaneously contact without interfering with the fixing of the coupler printed circuit board (7). One side of the carrier plate (14) is hinged with a clamping plate (17) that is compatible with the carrier plate (14). The clamping plate (17) is provided with several clearance holes (18) that are compatible with the mold hole (15). Both ends of the clearance hole (18) are provided with a pressing block (19). Both ends of the other side of the carrier plate (14) are provided with a fixing clamp (20). The mold lower panel (13) is provided with a connection clearance port. The connector (6) passes through the connection clearance port and connects to the interface PCB board (12).

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