Hanging object test master control system meeting GJB1188A interface

Abstract

The invention discloses a suspension test master control system meeting a GJB1188A interface. The suspension test master control system comprises a core processing module, a general test resource module and a matrix and bus extension module, the core processing module runs an embedded operating system on the basis of a Rycore micro RK3568 processor, and externally provides a man-machine interaction interface and 1553B bus communication; the universal test resource module realizes a universal meter measurement circuit and a discrete magnitude input and output function; the matrix and bus expansion module provides universal meter matrix channel expansion and serial bus communication; the device can cooperate with an AC / DC power supply, simulate an airplane on-hook process and complete a hanging object on-hook test, the size and weight of test equipment are greatly reduced, the device is convenient to transport and carry, and the requirement of rapid guarantee is met.

Description

Technical Field

[0001] The invention belongs to the technical field of signal acquisition and testing, and in particular relates to a main control system for testing suspended objects meeting the GJB1188A interface. Background Art

[0002] For a long time, aircraft and the suspensions they carry were developed independently of each other, resulting in different models and electrical standards for the interfaces of various types of suspensions, which greatly increased the complexity and cost of compatibility between different types of aircraft and suspensions. GJB1188A-99 Aircraft / Suspension Electrical Connection System Interface Requirements defines a universal interface for connecting aircraft and suspensions, so that one type of suspension can be compatible with multiple types of aircraft, and one type of aircraft can also carry multiple types of suspensions. Whether the electrical interface of the suspension works properly determines whether the combat training mission can be carried out normally. Using an aircraft to test the suspension seriously affects the aircraft's flight mission. According to the different functional objectives of the suspension, the test processes of different suspensions are different. Therefore, a main control system for suspension testing that meets the GJB1188A interface is designed, and the unit test program can be edited and reconstructed on site, simulating the aircraft hanging process to test the suspension, verifying the functional performance requirements of the suspension, and improving the support efficiency. Summary of the invention

[0003] In view of this, the present invention provides a main control system for hanging object testing that meets the GJB1188A interface, which can cooperate with AC and DC power supplies to simulate the aircraft hanging process and complete the hanging object hanging test, greatly reducing the volume and weight of the test equipment, facilitating accurate transportation and carrying, and realizing rapid guarantee needs.

[0004] The technical solution for implementing the present invention is as follows:

[0005] A main control system for hanging object testing that meets the GJB1188A interface, comprising a core processing module, a general test resource module, and a matrix and bus expansion module;

[0006] The core processing module is based on Rockchip RK3568 processor, runs embedded operating system, and provides human-computer interaction interface and 1553B bus communication.

[0007] The general test resource module realizes the multimeter measurement circuit and discrete quantity input and output functions;

[0008] Matrix and bus expansion modules provide multimeter matrix channel expansion and serial bus communication.

[0009] Further, the core processing module includes a power management circuit, an interface expansion and protection circuit, a processor, an FPGA master control circuit, a USB to serial port circuit, a 1553B bus communication circuit, and a PAL video decoding circuit;

[0010] The power management circuit converts the external 12V power supply into various power supplies required for the device to work; the interface expansion and protection circuit processes the MDI, HDMI, and USB bus signals according to standard requirements, and adds corresponding bus protection circuits to achieve interconnection and data interaction with external devices; the SATA bus provided by the processor is connected to the onboard mSTAT solid-state hard drive to meet the system boot and data storage requirements of the device;

[0011] The FPGA main control circuit communicates with the processor core through the PCIe bus to realize data interaction between the 1553B bus communication circuit and the PAL video decoding circuit; the 1553B bus communication circuit completes the conversion between the main control LVTTL level and the 1553 bus bipolar differential Manchester code; the PAL video decoding circuit converts the input standard PAL format analog video signal into a digital video signal through sampling and quantization by the internal ADC circuit of the chip, and sends it to the main control circuit; the USB to serial port circuit converts USB to a standard COM format UART interface.

[0012] Further, the universal test resource module includes a DC-DC isolation power supply circuit, an RS422 bus communication circuit, an MCU main control circuit, a multimeter circuit, a discrete quantity output circuit and a discrete quantity input circuit;

[0013] The DC-DC isolated power supply circuit converts the external 12V DC power supply into the isolated power supply required for the normal operation of the module, thereby improving the power supply reliability of the module; the RS422 bus communication circuit realizes the data interaction between the core processing module and the general test resource module; the MCU main control circuit, as the module control unit, receives the control commands sent by the core processing module through the serial port, realizes the control of the functions of each instrument inside the module, and sends the measurement and response results to the core processing module; the multimeter circuit realizes the measurement and display of interlocking resistance and AC and DC voltage, the discrete output circuit realizes the RT address setting required for 1188A test, and a double-pole relay is selected to realize the discrete configuration. One of the relays is used for dry contact realization, and the other is used for relay status reading back; the discrete input circuit adopts an optocoupler device to realize the sampling of external discrete signals, isolate external interference signals, and realize the isolation of the internal power supply of the main control system from external signals.

[0014] Further, the matrix and bus extension module includes a power filter distribution circuit, a matrix switch circuit, and a bus extension and routing circuit;

[0015] The power filter distribution circuit filters the external 12V power supply and provides it to the core processing module and the general test resource module respectively; the matrix switch circuit realizes the 15-row and 1-column double-pole matrix function control through a double-pole relay to meet the expansion requirements of multi-channel measurement of the multimeter, and uses multiple 38 decoders in series to ensure that only one relay channel is closed at the same time from the hardware perspective; the bus expansion and routing circuit converts the UART bus provided by the core processing module into an RS422 bus, and leads out the 1553B bus and PAL video decoding input provided by the core processing module through the onboard J30JA connector.

[0016] Furthermore, a test process reconstruction program is run inside the main control system, and the program consists of a user management module, an instrument management module, a test program configuration module and a test program management module; the user management module implements user login, modification of user information, and query of user information by keyword; the instrument management module implements instrument address configuration, instrument name configuration, instrument establishment and management, and instrument management database export; the test program configuration module implements the visual program process configuration function, and can directly run the configured process and instrument package interface template, which is convenient for users to conduct secondary development and directly call the interface library file developed by the user to perform visual configuration and debugging mode, which can not only perform single-step debugging on the edited process but also debug the source code of the interface library file developed by the user in conjunction with the process, simple algorithm selection function, and can process the output results of the instrument, configure delay (ms level), loop, conditional judgment functions, test data type configuration function, and the data type covers all test resources; the test program management module implements the functions of creating, opening, closing, adding, and removing projects, and publishing test program installation packages.

[0017] Beneficial effects:

[0018] 1. The present invention provides a main control system for testing suspension objects that meets the GJB1188A interface. The GJB1188A interface is a standard electrical connection interface for newly developed suspension objects. The present invention designs a test instrument unit that is miniaturized, lightweight, highly integrated, and has reconfigurable test software. As the main component of the test equipment, it meets the test requirements of various types of support test links such as field and maintenance.

[0019] 2. Compared with the traditional PXIe bus-based test instrument module, the present invention has the advantages of small size, light weight, fast transportation and low cost.

[0020] 3. Compared with the traditional way of developing test programs based on source code by software personnel, the on-site personnel of the present invention do not need code writing skills. After simple training, ordinary personnel can complete the reconstruction and generation of test programs according to needs, which limits the scope of personnel and has high use value. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a principle block diagram of the implementation of the present invention.

[0022] Figure 2 It is a principle block diagram of the core processing module of the present invention.

[0023] Figure 3 It is a principle block diagram of the universal test resource module of the present invention.

[0024] Figure 4 It is a principle block diagram of the discrete quantity output circuit in the universal test resource module of the present invention.

[0025] Figure 5 It is a principle block diagram of the matrix and bus expansion module of the present invention.

[0026] Figure 6 The present invention is a block diagram of the principle of controlling a single channel of the matrix and the bus expansion module of the matrix.

[0027] Figure 7 It is a structural schematic diagram of the main control system of the present invention.

[0028] Figure 8 Main window for process management. DETAILED DESCRIPTION

[0029] The present invention is described in detail below with reference to the accompanying drawings and embodiments.

[0030] In order to detect whether the hanging work flow of the tested hanging object is normal and improve the guarantee efficiency during the large-scale guarantee process, the present invention provides a hanging object test main control system that meets the GJB1188A interface, which cooperates with the AC and DC power supply modules to collect, configure and communicate the interlocking resistance, DC power supply, AC power supply, discrete signal and GJB289A data bus signal of the tested hanging object through the 1188A interface to realize the hanging test of the tested hanging object. The test process inside the equipment can be reconstructed online according to the different hanging objects.

[0031] like Figure 1 As shown in the figure, the main control system consists of a core processing module, a general test resource module, and a matrix and bus expansion module. The core processing module is based on the Rockchip RK3568 processor, runs an embedded operating system, and provides a human-computer interaction interface and 1553B bus communication. The general test resource module implements the multimeter measurement circuit and discrete input and output functions. The matrix and bus expansion module provides multimeter matrix channel expansion and serial bus communication.

[0032] like Figure 2As shown in the figure, the core processing module consists of a power management circuit, an interface expansion and protection circuit, a processor core, an FPGA circuit, a USB to serial port circuit, a 1553B bus communication circuit, and a PAL video decoding circuit. The power management circuit converts the external 12V power supply into various types of power supplies required for the device to work; the interface expansion and protection circuit processes the MDI, HDMI, and USB bus signals in accordance with standard requirements, adds corresponding bus protection circuits, and realizes interconnection and data interaction with external devices. The SATA bus provided by the processor is connected to the onboard mSTAT solid-state hard disk to meet the system boot and data storage of the device; the FPGA main control circuit communicates with the processor core through the PCIe bus to realize data interaction between the 1553B bus communication circuit and the PAL video decoding circuit; the 1553B bus communication circuit completes the conversion between the main control LVTTL level and the 1553 bus bipolar differential Manchester code; the PAL video decoding circuit converts the input standard PAL format analog video signal into a digital video signal through sampling and quantization by the internal ADC circuit of the chip, and sends it to the main control circuit; the USB to serial port circuit converts the USB into a standard COM-format UART interface.

[0033] like Figure 3 As shown in the figure, the universal test resource module consists of a DC-DC isolation power supply circuit, an RS422 bus communication circuit, an MCU main control circuit, a multimeter circuit, a discrete output circuit, and a discrete input circuit; the DC-DC isolation power supply circuit converts the external 12V DC power supply into the isolated power supply required for the normal operation of the module, thereby improving the reliability of the module power supply; the RS422 bus communication circuit realizes the data interaction between the core processing module and the universal test resource module; the MCU main control circuit, as the module control unit, receives the control commands sent by the core processing module through the serial port, realizes the control of the functions of each instrument inside the module, and sends the measurement and response results to the core processing module; the multimeter circuit realizes the collection of interlocking signals and AC and DC power supply signals; the discrete output circuit realizes the RT address setting required for the 1188A test, and selects a double-pole relay to realize the discrete configuration. One of the relays is used for dry contact realization, and the other is used for relay status reading back, such as Figure 4 As shown, when the relay is closed, the external output dry contacts NC and COM are energized, and the main control circuit reads the hard readback IO signal level as low; when the relay is disconnected, NC and COM are disconnected, and the main control circuit reads the hard readback IO signal level as high; the discrete quantity input circuit uses a photoelectric coupling device to realize the sampling of external discrete quantity signals, isolate external interference signals, and realize the isolation of the internal power supply of the main control system and external signals.

[0034] like Figure 5As shown in the figure, the matrix and bus expansion module consists of a power filter distribution circuit, a matrix switch circuit, a bus expansion and routing circuit; the power filter distribution circuit filters the external 12V power supply and provides it to the core processing module and the general test resource module respectively; the matrix switch circuit realizes the 15-row 1-column double-pole matrix function control through a double-pole relay to meet the expansion requirements of multi-channel measurement of the multimeter, and uses multiple 38 decoders in series to ensure that only one relay channel is closed at the same time from the hardware point of view, such as Figure 6 As shown; the bus expansion and routing circuit converts the UART bus provided by the core processing module into an RS422 bus, and leads out the 1553B bus and PAL video decoding input provided by the core processing module through the onboard J30JA connector.

[0035] like Figure 7 As shown in the figure, the internal test process reconstruction program of the main control system consists of a user management module, an instrument management module, a test program configuration module and a test program management module. The user management module implements user login, modification of user information, and query of user information by keyword; the instrument management module implements instrument address configuration, instrument name configuration, instrument establishment and management, and instrument management database export; the test program configuration module implements the visual program flow configuration function, and can directly run the configured process and instrument package interface template, which is convenient for users to conduct secondary development, directly call the interface library file developed by the user to perform visual configuration of the instrument, and the debugging mode can be used to perform single-step debugging of the edited process and debug the source code of the interface library file developed by the user in conjunction with the process, simple algorithm selection function, and can process the output results of the instrument, configure delay (ms level), loop, condition judgment and other functions, and test data type configuration function. The data type should cover all test resources. The test program management module implements the functions of creating, opening, closing, adding, and removing projects, and publishing the test program installation package.

[0036] like Figure 8 The figure shows the main window of process management. The test program can be reconfigured through the graphical interface. A test project can contain multiple test items, which are the most basic elements of the process. A test item is a collection of multiple test points. Instrument operations can specify how to operate the instrument and set the return results of the instrument operation. Through the collection of instrument operations, test points and test items, the test process can be reconstructed according to the test requirements, and the on-site graphical reconstruction and generation of the test program can be achieved.

[0037] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A main control system for testing suspended objects that meets the GJB1188A interface, characterized in that: It includes core processing module, general test resource module and matrix and bus expansion module; The core processing module is based on Rockchip RK3568 processor, runs embedded operating system, and provides human-computer interaction interface and 1553B bus communication. The general test resource module realizes the multimeter measurement circuit and discrete quantity input and output functions; Matrix and bus expansion modules provide multimeter matrix channel expansion and serial bus communication.

2. The main control system for suspended object testing according to claim 1, characterized in that: The core processing module includes power management circuit, interface expansion and protection circuit, processor, FPGA master control circuit, USB to serial port circuit, 1553B bus communication circuit and PAL video decoding circuit; The power management circuit converts the external 12V power supply into various power supplies required for the device to work; The interface expansion and protection circuit processes the MDI, HDMI, and USB bus signals according to standard requirements, adds corresponding bus protection circuits, and realizes interconnection and data interaction with external devices; the SATA bus provided by the processor is connected to the onboard mSTAT solid-state hard drive to meet the system boot and data storage requirements of the device; The FPGA main control circuit communicates with the processor core through the PCIe bus to achieve data interaction between the 1553B bus communication circuit and the PAL video decoding circuit; The 1553B bus communication circuit completes the conversion between the master control LVTTL level and the 1553 bus bipolar differential Manchester code; The PAL video decoding circuit converts the input standard PAL analog video signal into a digital video signal through sampling and quantization by the internal ADC circuit of the chip, and sends it to the main control circuit; the USB to serial port circuit converts the USB to a standard COM-format UART interface.

3. The main control system for suspended object testing according to claim 1, characterized in that: The general test resource module includes DC-DC isolation power supply circuit, RS422 bus communication circuit, MCU main control circuit, multimeter circuit, discrete quantity output circuit and discrete quantity input circuit; The DC-DC isolated power supply circuit converts the external 12V DC power supply into the isolated power supply required for the normal operation of the module, thereby improving the power supply reliability of the module; The RS422 bus communication circuit realizes the data interaction between the core processing module and the general test resource module; the MCU main control circuit, as the module control unit, receives the control commands sent by the core processing module through the serial port, realizes the control of the functions of each instrument inside the module, and sends the measurement and response results to the core processing module; the multimeter circuit realizes the measurement and display of interlocking resistance and AC and DC voltage, the discrete output circuit realizes the RT address setting required for 1188A test, and uses double-pole relays to realize discrete configuration. One of the relays is used for dry contact realization, and the other is used for relay status reading back; the discrete input circuit uses optocouplers to realize the sampling of external discrete signals, isolate external interference signals, and realize the isolation of the internal power supply of the main control system and external signals.

4. The main control system for suspended object testing according to claim 2, characterized in that: The matrix and bus extension module includes a power filter distribution circuit, a matrix switch circuit, a bus extension and routing circuit; The power filter distribution circuit filters the external 12V power supply and provides it to the core processing module and the general test resource module respectively; the matrix switch circuit realizes the 15-row 1-column double-pole matrix function control through a double-pole relay to meet the expansion requirements of multi-channel measurement of the multimeter, and uses multiple 38 decoders in series to ensure that only one relay channel is closed at the same time from the hardware perspective; The bus expansion and routing circuit converts the UART bus provided by the core processing module into an RS422 bus, and leads out the 1553B bus and PAL video decoding input provided by the core processing module through the onboard J30JA connector.

5. The main control system for suspended object testing according to any one of claims 1 to 4, characterized in that: The test process reconstruction program runs inside the main control system, and the program consists of a user management module, an instrument management module, a test program configuration module, and a test program management module; the user management module implements user login, modification of user information, and query of user information by keyword; the instrument management module implements instrument address configuration, instrument name configuration, instrument establishment and management, and instrument management database export; the test program configuration module implements the visual program flow configuration function, and can directly run the configured flow and instrument package interface template, which is convenient for users to conduct secondary development and directly call the interface library file developed by the user to perform visual configuration and debugging mode, which can not only perform single-step debugging on the edited flow but also debug the source code of the interface library file developed by the user in conjunction with the flow, simple algorithm selection function, can process the output results of the instrument, configure delay, loop, conditional judgment functions, test data type configuration function, and the data type covers all test resources; the test program management module implements the functions of creating, opening, closing, adding, and removing projects, and publishing the test program installation package.

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