Interface test equipment of bus module

Abstract

The utility model discloses an interface test device of a bus module, and relates to the technical field of test. Comprising a signal simulation device, a matrix conversion box and a first interface adapter which are connected through a test cable, the signal simulation device comprises a case and a function module, and the function module is located in the case and comprises a PXI module assembly. The PXI module assembly comprises a PXI controller, a serial port communication module, an ARINC429 communication module, a GJB289A communication module and a DFTI communication module which are installed on a PXI backboard. The PXI controller controls and manages other functional modules through software, the serial port communication module provides full-duplex and half-duplex RS422 signal interfaces, the ARINC429 communication module provides 56 paths of HB6096 signal sending interfaces and 30 paths of HB6096 signal receiving interfaces, the GJB289A communication module provides 2 paths of dual-redundancy 1553b signal interfaces, and the DFTI communication module provides 4 paths of DFTI signal sending interfaces. According to the utility model, the batch test of the bus module interface in the design verification and production inspection stages can be realized.

Description

Technical Field

[0001] This utility model relates to the field of testing technology, specifically to an interface testing device for a bus module. Background Technology

[0002] When performing interface testing on bus module boards, most existing single-board testing equipment only considers the testing functions during the design verification stage of the device under test. However, testing during the production inspection stage requires the construction of a separate testing platform. To meet the single-board testing needs during design and production, a portable integrated testing device needs to be designed to complete the testing of discrete and frequency quantity interface module boards. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide an interface testing device for a bus module.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] An interface testing device for a bus module includes a signal simulation device, a matrix converter box, and a first interface adapter connected by a test cable. The signal simulation device includes a chassis and a functional module, and the first interface adapter includes a signal adapter and a UUT interface bracket.

[0006] The functional modules are located inside the chassis and include a PXI module assembly. The PXI module assembly includes a PXI controller, a serial communication module, an ARINC429 communication module, a GJB289A communication module, and a DFTI communication module mounted on the PXI backplane.

[0007] The PXI controller controls and manages the remaining functional modules through software. The serial communication module provides full-duplex and half-duplex RS422 signal interfaces. The ARINC429 communication module provides 56 HB6096 transmit signal interfaces and 30 HB6096 receive signal interfaces. The GJB289A communication module provides 2 dual-redundant 1553b signal interfaces. The DFTI communication module provides 4 DFTI signal transmit interfaces.

[0008] It also includes a second interface adapter with the same composition and framework as the first interface adapter, used in the production inspection and testing phase of the bus module interface, and optionally connected to signal simulation equipment.

[0009] Furthermore, the signal simulation device also includes a human-machine interface module located outside the chassis, including a display, mouse, and keyboard, which is connected to the PXI controller to provide a human-machine interface for the operator.

[0010] Furthermore, the signal simulation device also includes an interface module, comprising a programmable interface and a signal interface. The programmable interface is used to connect the first interface adapter and the PXI controller to complete data interaction. The signal interface connects to a serial communication module, an ARINC429 communication module, a GJB289A communication module, and a DFTI communication module.

[0011] Furthermore, the serial communication module includes two 16-channel serial communication modules, one providing 20 RS422 full-duplex interface resources for the test device and the other providing 6 RS422 half-duplex interface resources for the test device.

[0012] Furthermore, the ARINC429 communication module includes three 32-channel 429 communication modules, one of which provides 30 429 data receiving channels for the test specimen and the other two provide 56 429 data sending channels for the test specimen.

[0013] Furthermore, the DFTI communication module includes a 4-channel DFTI communication module, providing 4 DFTI communication resources for the test specimen testing.

[0014] Furthermore, the GJB289A communication module includes two 2-channel dual-redundant 1553b modules, providing 4-channel dual-redundant 1553b communication resources for the test specimen.

[0015] Furthermore, the signal adapter of the first interface adapter also includes a data acquisition circuit, a primary voltage and current conditioning circuit, a secondary voltage conditioning circuit, and a power supply control circuit, providing control and secondary voltage regulation functions for the UUT power supply.

[0016] The beneficial effects of this utility model are:

[0017] This device provides 5 test stations for the device under test, and can perform interface tests on 5 bus modules on an integrated single-board test device. The test functions include: power supply test, internal bus interface test, RS-422 interface test, HB6096 interface test, GJB289A interface test and DFTI interface test. The system has a simple structure, is portable and practical. Attached Figure Description

[0018] Figure 1 A connection diagram of the test equipment;

[0019] Figure 2 Functional block diagram of signal simulation equipment;

[0020] Figure 3 This is a schematic diagram of the internal connections of a bus module signal simulation device;

[0021] Figure 4 This is a functional block diagram of the first interface adapter.

[0022] Figure 5 This is a functional block diagram of the first interface adapter of the bus module. Detailed Implementation

[0023] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] See Figures 1-5 This utility model provides a technical solution:

[0025] An interface testing device for a bus module, such as Figure 1 The system includes a signal simulation device, a matrix converter box, and a first interface adapter connected via a test cable. The signal simulation device comprises a chassis and functional modules. The first interface adapter includes a signal adapter and a UUT interface bracket. The functional modules are located inside the chassis and include a PXI module assembly. The PXI module assembly includes a PXI controller mounted on the PXI backplane, a serial communication module, an ARINC429 communication module, a GJB289A communication module, and a DFTI communication module. The functional block diagram of the signal simulation device is shown below. Figure 2 As shown.

[0026] The PXI controller controls and manages the remaining functional modules through software. The serial communication module provides full-duplex and half-duplex RS422 signal interfaces. The ARINC429 communication module provides 56 HB6096 transmit signal interfaces and 30 HB6096 receive signal interfaces. The GJB289A communication module provides 2 dual-redundant 1553b signal interfaces. The DFTI communication module provides 4 DFTI signal transmit interfaces.

[0027] The PXI controller uses the PXI-2010 module, which mainly performs the following functions: a) controlling, managing and scheduling the normal operation of each PXI module; b) executing test procedures; c) providing one LAN interface, one RS232 interface and two USB interfaces.

[0028] Furthermore, such as Figure 2 The signal simulation equipment also includes a human-machine interface module located outside the chassis, comprising a display, mouse, and keyboard, connected to the PXI controller, providing a human-machine interface for operators.

[0029] Furthermore, such as Figure 2 The signal simulation device also includes an interface module, comprising a programmable interface and a signal interface. The programmable interface is used to connect the first interface adapter and the PXI controller to complete data interaction. The signal interface connects to a serial communication module, an ARINC429 communication module, a GJB289A communication module, and a DFTI communication module.

[0030] In this embodiment, the serial communication module includes two 16-channel serial communication modules: one provides 20 RS422 full-duplex interface resources for the test device (DDT), and the other provides 6 RS422 half-duplex interface resources for the DDT. The selected 16-channel serial communication module is model PXI-4032, and its main performance indicators are as follows:

[0031] Number of channels: 16;

[0032] Communication protocol: Supports RS422 and RS232 protocols;

[0033] Word length, stop bits, parity bits, and baud rate are configurable;

[0034] Self-test and loopback functionality;

[0035] Each channel transmits 128 bytes of FIFO and receives 256 bytes of FIFO;

[0036] The communication baud rate can be finely adjusted within ±2.5% of the rated baud rate;

[0037] Each channel provides fault injection functionality;

[0038] Operating temperature: 0~50℃;

[0039] Storage temperature: -10~60℃;

[0040] Humidity: 5%–95% (no condensation)

[0041] Mechanical characteristics: 3U, 1 slot wide;

[0042] Driver support: Win 7 32 / 64.

[0043] The ARINC429 communication module includes three 32-channel ARINC429 communication modules. One of these modules provides 30 channels for receiving ARINC data during test, while the other two provide 56 channels for transmitting ARINC data during test. The selected 32-channel ARINC429 communication module is model PXI-4021A, and its main performance specifications are as follows:

[0044] Number of channels: 32; Data transmission direction for each channel is selectable (send, receive);

[0045] Select all Label and SDI message filtering methods;

[0046] Monitoring of all channel status and statistics tables; all received data is time-stamped.

[0047] Adjustable frequency selection of 12.5Kbps, 100Kbps, 48Kbps, and 50Kbps;

[0048] Multiple interrupt options;

[0049] Supports fault injection mode;

[0050] Operating temperature: 0~50℃;

[0051] Storage temperature: -10~60℃;

[0052] Humidity: 5%–95% (no condensation)

[0053] Mechanical characteristics: 3U, 1 slot wide;

[0054] Driver support: Win 7 32 / 64.

[0055] The DFTI communication module includes a 4-channel DFTI communication module, providing 4 DFTI communication resources for the test specimen testing. The selected DFTI communication module is model PXI-4090A, and its main performance indicators are as follows:

[0056] Channels: 4, simplex (transmit);

[0057] Word length: conforms to MIL-STD-1553B;

[0058] Electrical characteristics: Compliant with GB11014-89 (RS-485);

[0059] Baud rate: 1Mbps;

[0060] Communication cycle: 15ms, configurable;

[0061] Operating temperature: 0~50℃;

[0062] Storage temperature: -10~60℃;

[0063] Humidity: 5%–95% (no condensation)

[0064] Mechanical characteristics: 3U, 1 slot wide;

[0065] Driver support: Win 7 32 / 64.

[0066] The GJB289A communication module includes two 2-channel dual-redundant 1553b modules, providing four dual-redundant 1553b communication resources for the test specimen. The 2-channel dual-redundant 1553b module selected is model PXI-4010, and its main performance indicators are as follows:

[0067] Supports 1MHz MIL-STD-1553B bus communication protocol;

[0068] It can perform BC, RTS, and BM.

[0069] Supports interruption or query methods;

[0070] It has a timestamp mark;

[0071] Each channel operates independently;

[0072] The board has 32MB of shared RAM to store sent and received messages and data;

[0073] Each channel has a dual redundant bus;

[0074] A multi-functional module can perform BC, RTs, and BM functions simultaneously on one channel, while a single-functional module can only perform one of the BC, RTs, and BM functions at any given time.

[0075] Supports fault injection functionality;

[0076] Operating temperature: 0~50℃;

[0077] Storage temperature: -10~60℃;

[0078] Humidity: 5%–95% (no condensation)

[0079] Mechanical characteristics: 3U, 1 slot wide;

[0080] Driver support: Win 7 32 / 64.

[0081] The internal signal connection diagram of the signal simulation equipment is shown below. Figure 3 As shown in Table 1, the functions of each module in the PXI module component are summarized below:

[0082] Table 1 Summary of PXI Module Component Functions

[0083]

[0084] In this embodiment, as Figure 4The signal adapter of the first interface adapter shown also includes a data acquisition circuit, a primary voltage and current conditioning circuit, a secondary voltage conditioning circuit, and a power supply control circuit, providing control and secondary voltage regulation functions for the UUT power supply. The first interface adapter is used in the design verification and testing phase of the bus module. The functional block diagram of the first interface adapter of the bus module is shown below. Figure 5 As shown, the following signal interfaces are provided in conjunction with the signal simulation equipment:

[0085] Provides power supply and monitoring output signal interface;

[0086] Provides one secondary power supply voltage input interface for the test specimen;

[0087] Provides one interface adapter for remote control communication (LAN);

[0088] Provides 26 RS422 excitation signal input interfaces;

[0089] Provides 56 HB6096 excitation signal input interfaces;

[0090] Provides 30 HB6096 signal output interfaces;

[0091] Provides 8 GJB289A signal interfaces;

[0092] It provides 4-channel DFTI excitation signal input interfaces.

[0093] In some embodiments, the present invention further includes a second interface adapter with the same composition and framework as the first interface adapter, used in the production inspection and testing phase of the bus module interface, and optionally connected to a signal simulation device. The internal functional block diagram of the second interface adapter is similar, but compared with the first interface adapter, it reduces the secondary power supply voltage input interface of the test piece; the remaining functional composition and framework are the same as the first interface adapter.

[0094] The above description is merely a preferred embodiment of this utility model. It should be understood that this utility model is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this utility model should be protected within the scope of the appended claims.

Claims

1. An interface test device of a bus module, comprising a signal simulation device, a matrix converter box and a first interface adapter connected through a test cable, the signal simulation device comprising a cabinet and a function module, and the first interface adapter comprising a signal adapter and a UUT interface support, characterized in that: the function module is located inside the cabinet and comprises a PXI module assembly, the PXI module assembly comprising a PXI controller, a serial communication module, an ARINC429 communication module, a GJB289A communication module and a DFTI communication module mounted on a PXI backplane; the PXI controller controls and manages the rest of the function modules through software, the serial communication module provides full-duplex and half-duplex RS422 signal interfaces, the ARINC429 communication module provides 56-channel HB6096 sending signal interfaces and 30-channel HB6096 receiving signal interfaces, the GJB289A communication module provides 2-channel double-redundancy 1553b signal interfaces, and the DFTI communication module provides 4-channel DFTI signal sending interfaces; the second interface adapter which has the same composition and frame as the first interface adapter is further included, and is used for production inspection test phase of the bus module interface and can be optionally connected with the signal simulation device. The signal simulation device further comprises a man-machine interaction module located outside the cabinet, comprising a display, a mouse and a keyboard, and connected with the PXI controller to provide a man-machine interaction interface for an operator. The signal simulation device further comprises an interface module comprising a program-controlled interface and a signal interface, the program-controlled interface being used for connecting the first interface adapter and the PXI controller to complete data interaction, and the signal interface being connected with the serial communication module, the ARINC429 communication module, the GJB289A communication module and the DFTI communication module. The serial communication module comprises two 16-channel serial communication modules, one of which provides 20-channel RS422 duplex interface resources for the test of a test piece, and the other of which provides 6-channel RS422 half-duplex interface resources for the test of the test piece.

2. An interface test apparatus for a bus module according to claim 1, characterized in that: The ARINC429 communication module comprises three 32-channel 429 communication modules, one of which is used for providing 30-channel 429 data receiving channels for the test of the test piece, and the other two of which are used for providing 56-channel 429 data sending channels for the test of the test piece.

3. The interface test equipment for a bus module of claim 1, wherein: The DFTI communication module comprises a 4-channel DFTI communication module, which provides 4-channel DFTI communication resources for the test of the test piece.

4. The interface test equipment for a bus module of claim 1, wherein: The GJB289A communication module comprises two 2-channel double-redundancy 1553b modules, which provide 4-channel double-redundancy 1553b communication resources for the test of the test piece.

5. The interface test equipment for a bus module of claim 1, wherein: The signal adapter of the first interface adapter further comprises an acquisition circuit, a primary voltage and current conditioning circuit, a secondary voltage conditioning circuit and a power supply control circuit, which provide control and secondary voltage regulation functions for the power supply of the UUT.

6. The interface test equipment for a bus module of claim 1, wherein: ​ 7. The interface test equipment for a bus module of claim 1, wherein: ​ 8. The interface test equipment for a bus module of claim 1, wherein: ​

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