CN115543888B - Airborne test system based on MiniVPX framework - Google Patents

Abstract

An airborne test system based on a MiniVPX framework relates to the technical field of airborne test systems of aircrafts. The problem of current airborne test system is bulky is solved. The invention comprises a back plate, a main control board card, a functional board card, a power board card, a storage board card, an adapter board card and a trigger board card; the backboard comprises a double-slot interface unit, a single-slot interface unit, a PCIe bus, an SMBus bus and a SATA bus; the main control board card, the power board card and the adapter board card are embedded in the double-slot interface unit, the storage board card, the trigger board card and the functional board card are embedded in the single-slot interface unit, the main control board card is connected with the data end of the functional board card through the PCIe bus, the main control board card is also connected with the auxiliary data end of the functional board card through the SMBus bus, and the storage board card is connected with the main control board card through the SATA bus.

Description

An Airborne Test System Based on MiniVPX Framework

technical field

The invention relates to the technical field of aircraft airborne test systems.

Background technique

The current airborne test system has the characteristics of many types of test parameters, large amount of test record data, repeated use of the airborne environment, and heavy data processing workload. In the airborne test system, the size of the test system has attracted more and more attention. The traditional The airborne test system generally has the problem of large volume. While reducing the volume, it is also necessary to consider the heat dissipation and storage capacity issues to ensure that the test system can adapt to high-frequency flight test work.

The traditional airborne test system is based on PXI and VPX, which has the problem of large size and is not conducive to portability. At the same time, the traditional airborne test system does not use high-speed bus for data transmission.

Contents of the invention

The invention provides an airborne test system based on the MiniVPX framework, which solves the problem of large volume of the existing airborne test system.

To achieve the above object, the present invention provides the following solutions:

An airborne test system based on the MiniVPX architecture, the test system includes a backplane, a main control board, a function board, a power supply board, a storage board, an adapter board and a trigger board;

The backplane includes a double-slot interface unit, a single-slot interface unit, a PCIe bus, an SMBus bus and a SATA bus;

The dual-slot interface unit includes a main control slot interface, a power supply slot interface and an adapter slot interface;

The single-slot interface unit includes a function slot interface, a storage slot interface and a trigger slot interface;

The main control board is embedded in the interface of the main control slot, the power supply board is embedded in the interface of the power slot, the storage board is embedded in the interface of the storage slot, and the trigger board is embedded in the In the trigger slot interface, the function board is embedded in the function slot interface, and the adapter board is embedded in the adapter slot interface;

The main control board is connected to the data terminal of the functional board through the PCIe bus, and is used to control the functional board to complete data collection, and to test and process the data. The main control board also Connecting with the auxiliary data terminal of the functional board through the SMBus bus to realize the transmission of auxiliary data;

The storage board is connected to the main control board through the SATA bus to realize data storage;

The main control board is connected with the trigger board through the Aurora protocol on the backboard, and is used to control the triggering of the trigger board;

The power supply board is connected to the main control board, function board, storage board and trigger board through the backplane, and is used for the main control board, function board, storage board and adapter board Card and trigger board provide working power.

Further, there is also a preferred embodiment, the above-mentioned main control board includes a core board, a main control carrier board interface module, a main control carrier board core main control module, a MiniVPX connector and a main control carrier board power module;

The core board is connected with the MiniVPX connector through the main control carrier board interface module to realize data interaction;

The core board is connected to the core main control module of the main control carrier board through the interface module of the main control carrier board to realize data interaction;

The core board is also connected to the MiniVPX connector through the main control carrier board module to realize data interaction.

Further, there is also a preferred embodiment, the above-mentioned main control carrier board interface module includes an Ethernet transformer, USBBuffer, PTN3363 and FT232;

The core board is connected to the adapter board through the Ethernet transformer, and uses a Gigabit Ethernet port to realize data interaction;

The core board is connected with the USB interface of the MiniVPX connector through the USB Buffer to realize data interaction;

The core board is connected with the HDMI interface of the MiniVPX connector through the PTN3363 to realize data interaction;

The core board is connected to the core main control module of the main control carrier board through the FT232 to realize data interaction.

Further, there is also a preferred embodiment, the above-mentioned testing system also includes a front panel assembly, and the front panel assembly includes several front panels, which are respectively connected to the main control board, function board, power supply board, and storage board. , Trigger board and adapter board connection;

The adapter board transfers the adapter interface on the front panel of the adapter board.

Further, there is also a preferred embodiment, the above-mentioned storage board includes a puller, a solid-state hard disk, a cooling slot, a power slot, and a data slot;

The extraction aid is arranged on the side of the storage board for facilitating the insertion and removal of the storage board;

The data slot is used for caching data, and the data is sent to the solid-state hard disk for storage;

The power supply slot provides working power for the data slot and the solid-state hard disk;

The cooling groove is arranged around the solid state hard disk for heat dissipation.

Further, there is also a preferred embodiment, the above-mentioned functional board is an RS485 bus communication component or an ARINC429 bus communication component;

The RS485 bus communication component is used for collecting and sending RS485 communication data;

The ARINC429 bus communication component is used for collecting and sending ARINC429 communication data.

Further, there is also a preferred embodiment, the above-mentioned ARINC429 bus communication assembly includes an FPGA module, an ARINC429 protocol chip, a driver chip and a power supply circuit module;

The FPGA module is connected to the ARINC429 protocol chip for providing parameter initialization configuration for the protocol chip;

The ARINC429 protocol chip is connected to the FPGA module, and is used to realize the data sending function through the driver chip, and to receive data;

The power supply circuit module is used to supply power to the FPGA module, the protocol chip and the driver chip.

Further, there is another preferred embodiment, the trigger board includes a power supply module, a clock distribution module, a control module, a storage module, an interface module and a connector;

The trigger bus unit of the interface module includes a trigger bus, a CPU board, a trigger board and at least two function boards;

The at least two function boards are connected in series, the function boards send trigger signals to the next function board in turn, the last function board sends trigger signals to the CPU board, and the first function board is used to respond to all The trigger signal sent by the trigger board;

The CPU board, the trigger board and the function board perform information interaction with the trigger bus respectively;

The CPU board is used to send a control signal to the trigger board;

The trigger board is used to send a trigger signal to the first function board, and also send trigger signals to all function boards through a star connection. The last functional board sends a trigger signal to the CPU board through a point-to-point connection, and the CPU board sends a trigger signal to the trigger board through a point-to-point connection, and the trigger board sends a trigger signal to the trigger board through a star The connection mode sends a trigger signal to the CPU board.

The power supply module is used to supply power to the clock distribution module, the control module and the storage module;

The clock distribution module performs information interaction with the connector, and is used to multiplex forward the received clock signal to each of the function boards;

The control module is used to perform information interaction with the connector through the interface module, and is used to control the switching of the clock source of the clock distribution module;

The storage module is used for storing the working information of the trigger board.

Further, there is also a preferred embodiment, the above-mentioned power supply board includes a monitoring module, a DC/DC conversion module and an enabling signal control module;

The monitoring module monitors the voltage and current of the power board;

Protect the power board when the power board is over-voltage, over-current or short-circuited;

The DC/DC conversion module converts the airborne input power supply voltage into various DC voltages required by each board in the airborne test system;

The enable signal control module provides +12V and +3.3V DC power for the backplane.

Further, there is another preferred embodiment, the length of the above test system is 245.0 mm, the width is 116.9 mm, and the height is 143.7 mm.

The beneficial effects of the present invention are: the present invention provides an airborne test system based on the MiniVPX framework, which solves the problem of large volume of the existing airborne test system.

At the same time, the following advantages are produced:

1. Compared with the traditional PXI and VPX-based airborne test system. The invention provides an airborne test system based on the MiniVPX framework. The test system has a length of 245.0mm, a width of 116.9mm, and a height of 143.7mm. Compared with the existing test system, it has a small size and is easy to carry. Advantages, suitable for the airborne environment in a small space.

2, the present invention provides a kind of airborne test system based on MiniVPX framework, described test system utilizes main control board card control function board card to carry out data collection, and described data is tested and processed, and described main control board card Motherboard design is adopted, the daughter board is the core board for data testing and processing; the mother board is a carrier board, the carrier board includes a USB module, an Ethernet module and an HDMI module for data transmission, and at the same time It solves the heat dissipation problem caused by densely packed small chips.

3, the present invention provides a kind of airborne test system based on MiniVPX framework, described test system uses trigger board to trigger, and provides reference clock for function board, has the advantage of supporting TSN and IEEE1588 synchronous clock agreement, can guarantee simultaneously Real-time and synchronization of airborne test data.

4. The present invention provides an airborne test system based on the MiniVPX framework. The test system uses a power board to provide working power. The power board has a wide input range, is suitable for airborne DC power supply application scenarios, and supports Power management, with overvoltage, overcurrent and short circuit protection functions;

5. The present invention provides an airborne test system based on the MiniVPX framework. The test system uses a storage board to store airborne data. The storage board adopts a large-capacity solid-state storage design, and a puller is installed to easily perform the test. Disassemble, and set the heat conduction groove at the same time, after the data is stored, it can be hot-swapped immediately, and it can be connected to the host computer through USB through the transfer box, and at the same time, insert the spare memory card into the system to work again.

6. The present invention provides an airborne test system based on the MiniVPX framework, and the test system uses an adapter board to realize HDMI local video output and USB interface expansion functions.

The invention is applicable to the field of airborne test systems.

Description of drawings

Fig. 1 is the structural representation of a kind of airborne test system based on MiniVPX framework described in embodiment one;

Fig. 2 is the electrical schematic diagram of a kind of airborne test system based on MiniVPX framework described in embodiment one;

3 is an electrical schematic diagram of the connection between the main control board and the function board described in Embodiment 1;

4 is a schematic structural view of the backplane described in Embodiment 1;

Fig. 5 is the electrical schematic diagram of the main control board described in Embodiments 2 and 3;

FIG. 6 is a schematic structural diagram of the storage board described in Embodiment 5;

7 is an electrical schematic diagram of the ARINC429 bus communication assembly described in Embodiment 7;

Fig. 8 is a schematic diagram of the connection of the trigger board described in the eighth embodiment;

9 is an electrical schematic diagram of the trigger board described in Embodiment 8;

FIG. 10 is a control diagram of the enable signal of the power board described in Embodiment 9. FIG.

Detailed ways

Embodiment one. Referring to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, present embodiment is described, and present embodiment provides a kind of airborne test system based on MiniVPX framework, and described test system comprises backboard, main control board, function boards, power boards, storage boards, adapter boards and trigger boards;

The backplane includes a double-slot interface unit, a single-slot interface unit, a PCIe bus, an SMBus bus and a SATA bus;

The dual-slot interface unit includes a main control slot interface, a power supply slot interface and an adapter slot interface;

The single-slot interface unit includes a function slot interface, a storage slot interface and a trigger slot interface;

The main control board is embedded in the interface of the main control slot, the power supply board is embedded in the interface of the power slot, the storage board is embedded in the interface of the storage slot, and the trigger board is embedded in the In the trigger slot interface, the function board is embedded in the function slot interface, and the adapter board is embedded in the adapter slot interface;

The main control board is connected to the data terminal of the functional board through the PCIe bus, and is used to control the functional board to complete data collection, and to test and process the data. The main control board also Connecting with the auxiliary data terminal of the functional board through the SMBus bus to realize the transmission of auxiliary data;

The storage board is connected to the main control board through the SATA bus to realize data storage;

The main control board is connected with the trigger board through the Aurora protocol on the backboard, and is used to control the triggering of the trigger board;

The power supply board is connected to the main control board, function board, storage board and trigger board through the backplane, and is used for the main control board, function board, storage board and adapter board Card and trigger board provide working power.

In practical application of this embodiment, the main control board, function board, power supply board, storage board, adapter board and trigger board are embedded in the double-slot interface unit or single-slot interface unit on the backplane Above, the width of the double-slot interface unit is 23.0 mm, and the width of the single-slot interface unit is 11.5 mm. Placing the double-slot interface and the single-slot interface in parallel can minimize the volume of the test system. The test system takes the main control board as the calculation control center, and the control function board completes the data collection, and tests and processes the data. In the actual test process, there is a strict synchronous input and output relationship between the signals. This implementation The method is beneficial to trigger the board to ensure the real-time and synchronization of the airborne test data. This embodiment utilizes the backplane to realize the connection between the various boards. The backplane has a power path and a data path. The power supply board provides working power for each board through the backplane; the data path includes a PCIe bus, an SMBus bus and a SATA bus. bus, the main control board is connected to the function board through the PCIe bus to realize the transmission of main data, auxiliary information such as system information between the main control board and the function board is transmitted through the SMBus bus, and the main control The board is connected to the storage board through the SATA bus for data storage, and the speed supported by the backplane is 8Gbps, which meets the speed requirement of PCIe bus transmission.

This embodiment provides an airborne test system based on the MiniVPX framework, which solves the problem of large volume of the existing airborne test system.

Embodiment two. Refer to Fig. 5 and illustrate this embodiment, this embodiment is to give an example to the main control board in a kind of airborne test system based on MiniVPX framework described in embodiment one, and described main control board includes Core board, main control carrier board interface module, main control carrier board core main control module, MiniVPX connector and main control carrier board power module;

The core board is connected with the MiniVPX connector through the main control carrier board interface module to realize data interaction;

The core board is connected to the core main control module of the main control carrier board through the interface module of the main control carrier board to realize data interaction;

The core board is also connected to the MiniVPX connector through the main control carrier board module to realize data interaction.

In the actual application of this embodiment, the main control board is implemented by i7-1185GRE, and at the same time, the main control board is equipped with 4 PCIe × 1 buses, which can receive the data transmitted by the functional board, and process the data, and convert it to Converted to the corresponding data format and stored to the storage board through the SATA bus. Due to the high power of the main control board, the backplane is equipped with a VITA73 double-slot unit to ensure heat dissipation. The main control board is designed with a sub-motherboard structure. The sub-board of the main control board uses SOM-7583 as the core board. The main board contains a power module, an FPGA module and an interface module. The interface module includes a USB module, an Ethernet module and an HDMI module. The Ethernet module enhances Ethernet signal transmission, impedance matching, waveform repair, signal clutter suppression and high voltage isolation, etc., to ensure the completion of data transmission and engineering configuration. The HDMI module converts the DDI signal into an HDMI signal, thereby supporting the display to display the operation status of the main control board, and realizing the display function when debugging the main control board. The USB module has a plurality of USB interfaces, wherein the FPGA module needs 1 JTAG interface as a peripheral interface for debugging, 1 USB interface as a transmission interface, and 1 USB interface as a communication serial port with the FPGA unit , a USB interface is required to be directly used as a communication interface with the FPGA unit.

Embodiment three. Refer to Fig. 5 and illustrate this embodiment, this embodiment is to give an example to the main control carrier board interface module in a kind of airborne test system based on MiniVPX framework described in embodiment two, described main control carrier Board interface modules include Ethernet transformer, USB Buffer, PTN3363 and FT232;

The core board is connected to the adapter board through the Ethernet transformer, and uses a Gigabit Ethernet port to realize data interaction;

The core board is connected with the USB interface of the MiniVPX connector through the USB Buffer to realize data interaction;

The core board is connected with the HDMI interface of the MiniVPX connector through the PTN3363 to realize data interaction;

The core board is connected to the core main control module of the main control carrier board through the FT232 to realize data interaction.

This embodiment provides an airborne test system based on the MiniVPX framework. The test system uses the main control board module to control function boards to collect data, and to test and process the data. The main control board adopts Sub-board design, the sub-board is the core board, used to realize data testing and processing; the motherboard is the carrier board, the carrier board includes USB module, Ethernet module and HDMI module, used to realize data transmission, while solving It solves the heat dissipation problem caused by densely packed small chips.

Embodiment four. This embodiment is to increase the front panel assembly on the basis of a kind of airborne test system based on the MiniVPX framework described in the first embodiment, and the front panel assembly includes several front panels, respectively connected with the main control Connection of boards, function boards, power boards, storage boards, trigger boards and adapter boards;

The adapter board transfers the adapter interface on the front panel of the adapter board.

In the actual application of this embodiment, a front panel is added to each board, and the USB and HDMI are transferred to the front panel of the adapter board. Due to the miniaturization requirements of the MiniVPX, the abundant interfaces of the main control board cannot be effectively Expansion, so the front panel can be added to transfer the interface of the main control board through the transfer board. The transfer interface can be USB interface and HDMI interface, and the transfer board transfers the conversion interface to the front panel. , through the HDMI interface on the front panel for signal transmission, so as to support the display to display the running status of the main control board, and realize the display function of debugging the main control board.

This embodiment provides an airborne test system based on the MiniVPX framework, and the test system uses an adapter board to realize HDMI local video output and USB interface expansion functions.

Embodiment five. Refer to Fig. 6 and illustrate this embodiment, this embodiment is that the memory board in a kind of airborne test system based on MiniVPX framework described in Embodiment 1 is illustrated, and described memory board includes pull-out drives, solid-state drives, cold guide slots, power slots and data slots;

The extraction aid is arranged on the side of the storage board for facilitating the insertion and removal of the storage board;

The data slot is used for caching data, and the data is sent to the solid-state hard disk for storage;

The power supply slot provides working power for the data slot and the solid-state hard disk;

The cooling groove is arranged around the solid state hard disk for heat dissipation.

In practical application of this embodiment, the storage board is designed with a puller, which can realize the easy insertion and removal of the storage card without external tools. The standard VITA73 board structure is adopted, and the board is equipped with a SATA3.0 solid-state hard disk that supports hot-swappable M.2 interface. The size of the hard disk is 100.0mm×69.85mm×6.8mm, and the standard SATA interface. Equipped with a 2TB solid-state hard drive, the writing speed can reach up to 530MB/s, and the reading speed can reach up to 560MB/s. The power supply voltage is 5V±5%, and the power consumption is 2.2W. After the data is tested, the memory card can be disassembled, and the solid-state hard disk above it can be connected to the PC through the USB hard disk adapter box, and the data in the disk can be directly read through the PC.

Embodiment 6. This embodiment is an example of the functional board in the airborne test system based on the MiniVPX architecture described in Embodiment 1. The functional board is an RS485 bus communication component or an ARINC429 bus communication component;

The RS485 bus communication component is used for collecting and sending RS485 communication data;

The ARINC429 bus communication component is used for collecting and sending ARINC429 communication data.

In practical application of this embodiment, the function board module is an RS485 bus communication component or an ARINC429 bus communication component, which facilitates the function expansion of the test system and enhances the applicability of the test system.

Embodiment seven. Refer to Fig. 7 and illustrate this embodiment, this embodiment is to illustrate the ARINC429 bus communication assembly in a kind of airborne test system based on the MiniVPX architecture described in Embodiment six, and the ARINC429 bus communication assembly includes FPGA module, ARINC429 protocol chip, driver chip and power supply circuit module;

The FPGA module is connected to the ARINC429 protocol chip for providing parameter initialization configuration for the protocol chip;

The ARINC429 protocol chip is connected to the FPGA module, and is used to realize the data sending function through the driver chip, and to receive data;

The power supply circuit module is used to supply power to the FPGA module, the protocol chip and the driver chip.

The ARINC429 bus communication component described in this embodiment uses FPGA as the core, cooperates with the HI-3220 protocol chip to realize the ARINC429 bus interface, communicates with the host computer through the high-speed PCIe bus, implements the functional module logic on the FPGA, and configures the ARINC429 communication , to determine the communication rate, Label number screening and other parameters. This embodiment comprehensively considers the application environment and application purpose of the avionics system: (1) the application environment is an airborne environment, and factors such as miniaturization, reliability, and anti-interference ability should be considered; (2) the application purpose is to communicate with the host computer. High-speed serial port connection, multi-channel sending and receiving of ARINC429 bus data with multiple devices, realizing conversion of ARINC429 data and serial port data, greatly improving the real-time and accuracy of signal processing. This embodiment adopts FPGA-based design, uses FPGA and ARINC429 protocol chip HI-3220 to realize ARINC429 communication logic and PCIe communication logic with the host computer, and uses E2PROM to initialize and configure FPGA communication parameters, so that it can work in the default mode after power-on In the working state, the host computer can use PCIe to configure the communication parameters of the ARINC429 board to change its working state.

Embodiment eight. Refer to Fig. 8 and Fig. 9 and illustrate this embodiment, this embodiment is to illustrate the trigger board in a kind of airborne test system based on MiniVPX framework described in Embodiment 7, described trigger board Including power module, clock distribution module, control module, storage module, interface module and connector;

The trigger bus unit of the interface module includes a trigger bus, a CPU board, a trigger board and at least two function boards;

The at least two function boards are connected in series, the function boards send trigger signals to the next function board in turn, the last function board sends trigger signals to the CPU board, and the first function board is used to respond to all The trigger signal sent by the trigger board;

The CPU board, the trigger board and the function board perform information interaction with the trigger bus respectively;

The CPU board is used to send a control signal to the trigger board;

The trigger board is used to send a trigger signal to the first function board, and also send trigger signals to all function boards through a star connection. The last functional board sends a trigger signal to the CPU board through a point-to-point connection, and the CPU board sends a trigger signal to the trigger board through a point-to-point connection, and the trigger board sends a trigger signal to the trigger board through a star The connection mode sends a trigger signal to the CPU board.

The power supply module is used to supply power to the clock distribution module, the control module and the storage module;

The clock distribution module performs information interaction with the connector, and is used to multiplex forward the received clock signal to each of the function boards;

The control module is used to perform information interaction with the connector through the interface module, and is used to control the switching of the clock source of the clock distribution module;

The storage module is used for storing the working information of the trigger board.

In practical application of this embodiment, a schematic diagram of connection of the trigger board is shown in FIG. 8 . The trigger board includes a clock distribution module, a control module, a storage module, a power supply module and an interface module. Wherein, the power module is composed of a power chip and an auxiliary circuit, and supplies power to the FPGA and other chips. The storage module consists of a Flash chip and an E2PROM chip to store the FPGA program bit stream and board configuration information. The interface module is composed of trigger bus and corresponding communication bus defined by the connector.

The clock distribution module is composed of multiple clock drive chips, clock crystal oscillator and its auxiliary circuits. The clock drive chip multiplexes the signal generated by the clock crystal oscillator or the precise time signal transmitted by the connector, and enhances the signal drive capability. The clock distribution module also includes a clock source selection function, which triggers the clock signal generated by the high-stability crystal oscillator on the board and the reference clock signal imported from the main control board to be selected through the FPGA control signal. The output signal of the clock distribution module is transmitted to each functional board in the chassis through the connector and the backplane of the chassis, and the output signal includes reference clock signals of various frequencies and precise time information signals. The control module of the trigger board uses the FPGA chip as the core to complete the functions of clock distribution module control and generation of various trigger signals. When the test system based on the MiniVPX architecture is started, the host computer software and the main control board are connected through the Ethernet port. The network discovers each functional board in the chassis and sends configuration information to the main control board. Power boards including trigger boards send configuration information. Subsequently, the upper computer sends control information, the main control board sends it to the trigger board after receiving it, and the trigger board sends a trigger signal, and the functional boards in the chassis start to work. When the chassis starts and the host computer software does not send control information, the device under test sends an external trigger signal to the test system, and the corresponding function board TRIG of the test system triggers the waveform on the bus to change, and the main control board detects the state change and starts the corresponding The data receiving function of the function board and save the state information.

The electrical schematic diagram of the trigger board is shown in Figure 9. The trigger board uses a clock distribution module to fan out the clock signal to multiple channels to provide reference clocks for the function board. The trigger board is a special board based on the MiniVPX airborne test system The function of the card is to provide reference clocks of various frequencies, such as PPS signals and trigger signals, for functional boards. The trigger board obtains trigger information through communication with the main control board, and after analyzing the information, obtains the corresponding function board that needs to be triggered. The main control module takes FPGA as the core, and is responsible for receiving the control information transmitted by the main control board, and generating a corresponding trigger signal of the trigger bus after analysis, and sending it to the corresponding function board. According to the analyzed information, three trigger buses are implemented, namely TRIG[2:0], star trigger bus and point-to-point trigger line. The TRIG[2:0], star trigger line and point-to-point trigger line, all three trigger lines are controlled by the main control module, wherein TRIG[2:0] is used as a trigger bus, and the star trigger line is used as a high-speed trigger The cables are connected to the backplane through connectors, and connected to each function board in the system. Point-to-point trigger lines are local trigger lines that are only connected to adjacent slots. TRIG[2:0] serves as a common trigger line to provide the system with trigger signals between boards. After the host computer sends the trigger signal, the trigger board transmits the trigger signal to the trigger bus. After being acquired by the corresponding function board, the corresponding function is started; function When the board is triggered by an external signal, it transmits the trigger signal to the trigger bus, and the trigger module sends relevant information to the main control module through the Aurora serial bus after receiving it.

As an independent trigger bus, the star trigger line provides high-precision, low-latency trigger signals for the main control board and other functional boards, meeting the low-latency trigger requirements that TRIG[2:0] cannot achieve. The long-line matching technology is used for the wiring of the star trigger line to ensure low trigger delay and high trigger accuracy when the star trigger line of the trigger board reaches each function board. The star trigger line is designed with LVDS level standard, which reduces the influence of noise on the trigger signal. When a high-precision and low-latency trigger signal is required in the system, the trigger module uses a star trigger line to send the trigger signal to each functional board.

The point-to-point trigger line is a daisy chain bus. The point-to-point trigger line of the trigger board is connected to the main control board and the function board of the test platform. The bus provides an additional signal line to connect to the backplane connector. As a spare trigger line, it can be used to transmit trigger signals and communicate with corresponding boards. At the same time, the signal line is output by the FPGA and then led to the MMCX connector. As a triggered board, it has scalability and can be connected to modules in other systems, or to non-adjacent functional boards.

The clock distribution module is composed of multiple clock driver chips and high-stable crystal oscillators. The onboard 10MHz and 100MHz crystal oscillators are used to multiplex the two clock signals through the clock driver chips. The PPS signal is generated by the core board of the main control board and transmitted to the MiniVPX connector of the trigger module through the backplane. The clock trigger chip in the clock distribution module divides the PPS signal into multiple PPS signals, which are directly transmitted to the MiniVPX connector.

The power module implements the recommended power-on sequence of the FPGA on the basis of supplying power to components such as the FPGA and the clock driver chip, thereby reducing the instantaneous power when powering on.

This implementation mode provides an airborne test system based on the MiniVPX framework. The test system is triggered by a trigger board and provides a reference clock for the function board. It has the advantages of supporting TSN and IEEE1588 synchronous clock protocols, and can ensure Real-time and synchronization of load test data.

Embodiment 9. Referring to Fig. 10 to illustrate this embodiment, this embodiment is an example of the power board in the airborne test system based on the MiniVPX architecture described in Embodiment 1, and the power board includes a monitoring module , DC/DC conversion module and enable signal control module;

The monitoring module monitors the voltage and current of the power board;

Protect the power board when the power board is over-voltage, over-current or short-circuited;

The DC/DC conversion module converts the airborne input power supply voltage into various DC voltages required by each board in the airborne test system;

The enable signal control module provides +12V and +3.3V DC power for the backplane.

In practical application of this embodiment, the voltage input range supported by the power supply board is DC 18V-36V, which meets the power supply technical requirements of the airborne system, and the power supply board provides power supply for the system and other boards. The edge of the power board housing is designed with rounded corners to facilitate obtaining a surface coating with an appropriate thickness and strong adhesion. The surface is treated with chemical nickel plating. The power board has good grounding, which can ensure the safety of the power supply system. Input and output The filtering measures are perfect, which can effectively suppress the generation of circuit noise interference and ensure the safe operation of the subsequent circuit. The output of each DC/DC conversion module used in the power board has overvoltage, overcurrent and short circuit protection functions, which can ensure that the subsequent system will not be damaged due to overvoltage, overcurrent or short circuit; when one of the outputs is overvoltage , the DC/DC conversion module will be forced to stop working, and at the same time, the monitoring module will report an error; when one of the outputs is over-current, the DC/DC conversion module will enter the current-limiting protection mode, and the output voltage will decrease accordingly, protecting the power supply itself from failure. It will be damaged by over-current; when one of the output groups is short-circuited and over-current, the DC/DC conversion module enters the hiccup protection mode. It can work normally only after resetting and powering on. The enable signal control of the power board is shown in Figure 10, which provides +12V and +3.3V DC power for the MiniVPX test system backplane.

Embodiment 10. This embodiment is an example of the size of the airborne test system based on the MiniVPX architecture described in Embodiment 1. The length of the test device is 245.0mm, the width is 116.9mm, and the height is 143.7mm .

This embodiment provides an airborne test system based on the MiniVPX framework. The test system has a length of 245.0 mm, a width of 116.9 mm, and a height of 143.7 mm. It has the advantage of small size and is suitable for airborne environments in small spaces.

The above description is only an embodiment of the present invention, and is not limited to the present invention. For those skilled in the art, the present invention may have various modifications and changes. Within the spirit and principles of the present invention, any modification, equivalent replacement, improvement, etc. All should be included within the scope of the claims of the present invention.

Claims (7)

1. An airborne test system based on a MiniVPX architecture comprises a back plate, a main control board card, a functional board card, a power board card, a storage board card, an adapter board card and a trigger board card;

the backboard comprises a double-slot interface unit, a single-slot interface unit, a PCIe bus, an SMBus bus and a SATA bus;

the double-slot interface unit comprises a main control slot interface, a power slot interface and a switching slot interface;

the single-slot interface unit comprises a functional slot interface, a storage slot interface and a trigger slot interface;

the main control board card is embedded in the main control slot interface, the power board card is embedded in the power slot interface, the storage board card is embedded in the storage slot interface, the trigger board card is embedded in the trigger slot interface, the function board card is embedded in the function slot interface, and the adapter board card is embedded in the adapter slot interface;

the main control board card is connected with the data end of the functional board card through the PCIe bus and is used for controlling the functional board card to complete data acquisition and test and process the data, and the main control board card is also connected with the auxiliary data end of the functional board card through the SMBus bus and is used for realizing auxiliary data transmission;

the storage board card is connected with the main control board card through the SATA bus and is used for realizing data storage;

the main control board card is connected with the trigger board card through an Aurora protocol on the backboard and is used for controlling the trigger of the trigger board card;

the power board card is connected with the main control board card, the functional board card, the storage board card and the trigger board card through the back board and is used for providing working power for the main control board card, the functional board card, the storage board card, the adapter board card and the trigger board card;

the functional board card is characterized by being an RS485 bus communication component or an ARINC429 bus communication component;

the RS485 bus communication assembly is used for acquiring and sending RS485 communication data;

the ARINC429 bus communication component is used for collecting and sending ARINC429 communication data;

the ARINC429 bus communication component comprises an FPGA module, an ARINC429 protocol chip, a driving chip and a power supply circuit module;

the FPGA module is connected with the ARINC429 protocol chip and is used for providing parameter initialization configuration for the protocol chip;

the ARINC429 protocol chip is connected with the FPGA module and is used for realizing a data sending function through the driving chip and receiving data;

the power supply circuit module is used for supplying power to the FPGA module, the protocol chip and the driving chip;

the trigger board card comprises a power supply module, a clock distribution module, a control module, a storage module, an interface module and a connector;

the triggering bus unit of the interface module comprises a triggering bus, a CPU board card, a bus triggering board card and at least two functional board cards;

the at least two functional boards are connected in series, the functional boards sequentially send trigger signals to the next functional board, the last functional board sends the trigger signals to the CPU board, and the first functional board is used for responding to the trigger signals sent by the bus trigger boards;

the CPU board card, the bus trigger board card and the functional board card respectively interact with the trigger bus;

the CPU board card is used for sending a control signal to the bus trigger board card;

the bus trigger board card is used for sending trigger signals to the first functional board card and also respectively sending the trigger signals to all the functional board cards in a star connection mode; the last functional board card sends a trigger signal to the CPU board card in a point-to-point connection mode, the CPU board card sends the trigger signal to the bus trigger board card in a point-to-point connection mode, and the bus trigger board card sends the trigger signal to the CPU board card in a star connection mode;

the power supply module is used for supplying power to the clock distribution module, the control module and the storage module;

the clock distribution module performs information interaction with the connector and is used for multiplexing the received clock signals to each functional board card;

the control module is used for carrying out information interaction with the connector through the interface module and controlling the switching of the clock source of the clock distribution module;

the storage module is used for storing the working information of the trigger board card.

2. The airborne testing system based on MiniVPX architecture according to claim 1, wherein the main control board card comprises a core board, a main control carrier board interface module, a main control carrier board core main control module, a MiniVPX connector and a main control carrier board power module;

the core board is connected with the MiniVPX connector through the main control carrier board interface module to realize data interaction;

the core board is connected with the main control module of the main control carrier board core through the main control carrier board interface module to realize data interaction;

the core board is also connected with the MiniVPX connector through the main control carrier board interface module, so that data interaction is realized.

3. The MiniVPX architecture-based airborne testing system of claim 2, wherein the master carrier board interface module comprises an ethernet transformer, a USB Buffer, PTN3363, and FT232;

the core board is connected with the adapter board card through the Ethernet transformer, and data interaction is realized by using a gigabit network port;

the core board is connected with a USB interface of the MiniVPX connector through the USB Buffer to realize data interaction;

the core board is connected with the HDMI interface of the MiniVPX connector through the PTN3363 to realize data interaction;

the core board is connected with the main control carrier board core main control module through the FT232 to realize data interaction.

4. The MiniVPX architecture-based airborne testing system according to claim 1, further comprising a front panel assembly including a plurality of front panels respectively connected with the main control board card, the function board card, the power board card, the memory board card, the trigger board card, and the adapter board card;

the adapter board card is used for adapting the adapting interface to the front panel of the adapter board card.

5. The MiniVPX architecture-based airborne testing system according to claim 1, wherein the memory board card comprises a booster, a solid state disk, a cold guide slot, a power supply slot, and a data slot;

the pull-out assisting device is arranged on the side face of the storage board card and is used for facilitating the insertion and the pull-out of the storage board card;

the data slot is used for caching data and sending the data to the solid state disk for storage;

the power supply groove provides working power supply for the data groove and the solid state disk;

the cold guide groove is arranged around the solid state disk and used for realizing heat dissipation.

6. The MiniVPX architecture-based airborne testing system according to claim 1, wherein the power board comprises a monitoring module, a DC/DC conversion module and an enable signal control module;

the monitoring module monitors the voltage and the current of the power panel card;

when overvoltage, overcurrent or short circuit occurs on the power panel card, the power panel card is protected;

the DC/DC conversion module converts the airborne input power supply voltage into various direct current voltages required by each board card in the airborne test system;

the enabling signal control module provides +12V and +3.3V direct current power for the backboard.

7. The MiniVPX architecture based on-board test system according to claim 1, wherein the test system is 245.0mm long, 116.9mm wide and 143.7mm high.

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