Anti-collision excitation system based on reflective memory remote control

Abstract

The invention discloses an anti-collision excitation system based on reflective memory remote control, and relates to the field of flight simulation systems. The system can be used on various buses such as VME, PCI and PCM by utilizing the reflective memory network, is simultaneously suitable for different types of PCs and various operating systems, has the advantages of high speed, real-time performance and certainty in information transmission, and has the characteristics of support of interruption, strong transmission error correction and the like; simulated flight parameters issued by a remote terminal are received through a reflective memory network and calculated in real time, TCAS excitation or responder excitation function selection is completed through an exciter, then an excitation command is issued, and finally excitation of TCAS equipment is completed.

Description

Technical Field

[0001] The invention relates to the field of flight simulation systems, and in particular to an anti-collision excitation system based on reflective memory remote control. Background Art

[0002] The statements in this section merely provide background information related to the present disclosure and may not constitute prior art.

[0003] With the continuous development of information technology, flight simulation system technology has developed rapidly. There are more and more related devices in flight, and each device has its own unique function, providing information about a certain aspect of flight safety. At this time, the flight simulation system is required to be able to handle large-capacity information, high-precision data processing, and provide real-time flight information. However, serial ports, Ethernet, and CAN networks are mostly used in flight simulation systems to establish system networks. For avionics bus systems, connecting multiple tasks, it is impossible to avoid the unpredictability of network communication systems, ensure the integrity of information and real-time command transmission, and it is difficult to achieve the fidelity of flight simulation systems.

[0004] System designers are increasingly challenged to build more powerful and complex systems in less time. In this case, the cost of hardware is negligible compared to the cost of software and integrated hardware / software, which is even more evident in stand-alone systems and microsystems. When low unit investment in time and system uptime is a key factor in the market, the use of reflective memory can bring great benefits. In these demanding systems, the simple read / write communication method of reflective memory greatly improves time to market while increasing data throughput on the network.

[0005] Reflective Memory Network is a special shared memory system designed to enable multiple independent computers to efficiently share a common data set. It ensures that each node has access to the latest data by saving an independent copy of the shared memory at each node and updating the data synchronously with extremely low latency. This design is particularly suitable for data communication situations that require high real-time performance and low latency.

[0006] This technology is applied to flight simulation systems. A real-time system built with real-time network technology is a computer system that can perform calculations or processing functions within a certain time and respond to external asynchronous events. The characteristics of real-time networks are the determinism and predictability of communication, which means that the time for data transmission between nodes in a real-time network is certain. The network memory network is a high-speed, real-time, deterministic network that can better solve the real-time problem of data transmission in flight simulation real-time systems, improve the transmission rate and error correction capability of network data, and restore the fidelity of flight simulation systems.

[0007] Flight simulation systems are required to be able to process large amounts of information, high-precision data processing, and provide real-time flight information. However, current flight simulation systems mostly use serial ports, Ethernet, and CAN networks to establish system networks. Serial ports and CAN have high reliability, but their transmission rates are relatively slow and their real-time performance is relatively poor. Traditional Ethernet can already reach gigabit transmission rates, but since Ethernet communication requires the help of network protocols, the delay has great uncertainty, which reduces communication efficiency and makes it difficult to meet real-time requirements. It is impossible to ensure the integrity of information and real-time command transmission, and it is difficult to achieve the fidelity of the flight simulation system. Summary of the invention

[0008] The purpose of the present invention is to provide an anti-collision excitation system based on reflective memory remote control in view of the problems existing in the prior art. The reflective memory network can be used on various buses such as VME, PCI and PCM, and is suitable for different types of PCs and various operating systems. The information transmission has the advantages of high speed, real-time and determinism, and has the characteristics of supporting interruption and strong transmission error correction. The simulated flight parameters sent by the remote terminal are received through the reflective memory network and solved in real time. The TCAS excitation or transponder excitation function selection is completed through the exciter, and then the excitation command is issued to finally complete the excitation of the TCAS device.

[0009] The technical solution of the present invention is as follows:

[0010] A collision avoidance excitation system based on reflective memory remote control, comprising: a remote flight platform, an exciter system, a TCAS host and an S-mode transponder; the remote terminal communicates with the exciter system via a reflective memory network; the TCAS host and the S-mode transponder communicate with the exciter system;

[0011] The remote flight platform has built-in excitation transponder software and dynamic target editing software, and can set different modes through the excitation transponder software and edit dynamic target information through the dynamic target editing software;

[0012] The exciter system excites the S-mode transponder and the TCAS host according to the command sent by the remote flight platform, the response signal sent by the S-mode transponder, and the inquiry signal sent by the TCAS host.

[0013] Furthermore, the physical topology of the reflective memory network includes: a ring topology or a star topology.

[0014] Furthermore, the exciter system includes: a cabinet, a display, a NI control extension and an exciter; the display, the NI control extension and the exciter are all installed in the cabinet; the display and the exciter communicate with the NI control extension; the NI control extension communicates with the remote flight platform through a reflective memory network; the exciter communicates with the TCAS host and the S-mode transponder.

[0015] Furthermore, the NI control extension includes: an NI chassis, a control unit, a height data board, and a reflective memory stick; the control unit, the height data board, and the reflective memory stick are installed in the NI chassis; and the control unit communicates with the exciter.

[0016] Furthermore, the exciter includes: an attenuator group, a transmitting module, a receiving module, a TCAS processing module, a power module, and a base plate; the transmitting module, the receiving module, the TCAS processing module, and the power module communicate with the base plate, and the base plate communicates with the control unit; radio frequency communication is used between the transmitting module and the receiving module; the attenuator group communicates with the transmitting module, and the attenuator group communicates with the S-mode transponder through the upper antenna and the lower antenna, and the attenuator group also communicates with the transponder through the upper mode antenna and the lower mode antenna.

[0017] Furthermore, a reflective memory bar is inserted in the remote flight platform; the reflective memory bar in the remote flight platform and the reflective memory bar in the NI chassis are connected via optical fiber.

[0018] Furthermore, when it is necessary to set the aircraft's flight altitude, the TCAS host and S-mode transponder are powered on, the exciter system is turned on, and the pressure altitude is simulated through the altitude data board and sent to the S-mode transponder via RS429, putting the wheel-borne signal in the air.

[0019] Furthermore, the S-mode transponder activation process is as follows:

[0020] The remote flight platform sets the A mode and C mode respectively through the excitation transponder software, and sends them to the exciter system through the reflective memory network. After receiving the command, the TCAS processing module of the exciter starts to excite the S mode transponder. When the exciter excites the transponder according to the parameter settings, it forms an interrogation code and sends the interrogation code information to the transmitting module. The transmitting module forms an interrogation radio frequency signal and completes the interrogation through the designated antenna. When the receiving module receives the reply signal from the designated antenna, it reports the reply signal to the TCAS processing module in the form of an intermediate frequency signal. After the TCAS processing module decodes the reply signal, it obtains relevant reply information and reports the reply information result to the remote flight platform to display the altitude and code information of the aircraft.

[0021] Furthermore, the TCAS host excitation process is as follows:

[0022] The remote flight platform edits the number, position, distance, speed and altitude information of dynamic targets through the dynamic target editing software, sends dynamic instructions through the reflective memory network, and starts to execute the dynamic target simulation process. After the TCAS processing module of the actuator system receives the dynamic command, it starts the target excitation function;

[0023] The exciter receives the interrogation signal from the TCAS host, and the receiving module sends the intermediate frequency signal to the TCAS processing module. The TCAS processing module decodes the interrogation signal, obtains the relevant interrogation information, and responds accordingly according to the interrogation information and preset parameters to form an answer code. The answer code is sent out through the transmitting module through the designated upper antenna or lower antenna to form a complete target simulation process. At the same time, the information upload result is displayed on the remote flight platform terminal. By simulating flight data, the distance, altitude, azimuth and motion trajectory of the target aircraft relative to the aircraft are calculated to determine whether it poses a potential collision hazard to the aircraft, determine whether there is a potential conflict threat in the air interval at the closest point, and output avoidance suggestions to the pilot.

[0024] Furthermore, the physical topology of the reflective memory network is a ring topology.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] The present invention realizes dynamic association of the relative motion situation between the aircraft and the target aircraft by receiving the aircraft data sent by the remote flight platform in real time, and restores the fidelity of the TCAS system operation during the flight of the aircraft; at the same time, it can also edit and store in advance according to different scene files and send them in real time. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic diagram of an anti-collision excitation system based on reflective memory remote control;

[0028] Figure 2 This is a diagram of the ring topology of the reflective memory network;

[0029] Figure 3 Build a schematic for the reflective memory network;

[0030] Figure 4 It is an interrupt communication flow chart;

[0031] Figure 5 is a schematic diagram of the structure of the actuator system;

[0032] Figure 6 is a block diagram of the components of the exciter;

[0033] Figure 7 This is the A mode information of this machine;

[0034] Figure 8 This is the C-mode information of the machine;

[0035] Fig. 9 Simulate editing graphs for dynamic targets;

[0036] Fig.10 Send graphs for dynamic simulation targets;

[0037] Fig.11 Generate graphs for target simulations;

[0038] Fig.12 This is a schematic diagram of the flight target situation and target warning. DETAILED DESCRIPTION

[0039] It should be noted that relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0040] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

[0041] Embodiment 1

[0042] See also Figure 1 , an anti-collision excitation system based on reflective memory remote control, specifically including the following modules:

[0043] A remote flight platform, an exciter system, a TCAS host and an S-mode transponder; the remote terminal communicates with the exciter system via a reflective memory network; the TCAS host and the S-mode transponder communicate with the exciter system;

[0044] The remote flight platform has built-in excitation transponder software and dynamic target editing software, and can set different modes through the excitation transponder software and edit dynamic target information through the dynamic target editing software;

[0045] The exciter system excites the S-mode transponder and the TCAS host according to the command sent by the remote flight platform, the response signal sent by the S-mode transponder, and the inquiry signal sent by the TCAS host.

[0046] In this embodiment, it should be noted that the physical topology of the reflective memory network includes: a ring topology or a star topology; specifically, the ring topology is adopted in this embodiment, such as Figure 2 As shown;

[0047] It should be noted that, in this embodiment, a reflective memory network is built using 1 PMC-5565PIORC and 1 PCI-5565PIORC reflective memory card, and a large amount of data is updated and transmitted in real time through the reflective memory network; PCI-5565PIORC is a product of NI, providing ST's optical fiber interface, the optical fiber transmission bandwidth is 1.2Gband, the network data transmission rate is 29.6MBs, and it supports up to 256 nodes. The maximum distance between two nodes is 1000 feet (30 meters for this system), and the on-board memory size is 1MB (maximum 16MB); after the reflective memory network is inserted into the NI chassis and the remote flight platform, it is built into a network through optical fiber. The construction diagram of the reflective memory network is as shown in the figure Figure 3 As shown;

[0048] It should be noted that to set up a reflective memory network, the following two settings are mainly required: setting the board ID number in the E1 jumper. The reflective memory cards of different nodes have different ID numbers (when the reflective memory card of a node fails and needs to be replaced, the ID number of the new reflective memory must be consistent with the old ID number, otherwise it cannot be used normally). Setting whether it is redundant transmission in the E3 jumper. Redundant transmission can prevent transmission errors and maintain transmission reliability. This embodiment sets the remote flight platform to 00 and the exciter system to 01. When data is written to the local reflective memory card, it is simultaneously transmitted to other connected computers without software delay, and the hardware delay is fixed and extremely small. The 5565 series reflective memory card only takes 400ns to transmit data between nodes. This solution uses an interrupt method to access memory data, such as Figure 4 shown.

[0049] In this embodiment, specifically, Figure 5 As shown, the exciter system includes: a cabinet, a display, an NI control extension and an exciter;

[0050] The display, NI control extension and actuator are all installed in the cabinet; the display and actuator communicate with the NI control extension; the NI control extension communicates with the remote flight platform through a reflective memory network; the actuator communicates with the TCAS host and the S-mode transponder.

[0051] In this embodiment, specifically, the NI control extension includes: an NI chassis, a control unit, an altitude data board, and a reflective memory stick; the control unit, the altitude data board, and the reflective memory stick are installed in the NI chassis; and the control unit communicates with the exciter.

[0052] In this embodiment, specifically, Figure 6 As shown, the exciter includes: an attenuator group, a transmitting module, a receiving module, a TCAS processing module, a power module, and a base plate;

[0053] The transmitting module, receiving module, TCAS processing module, and power supply module communicate with the base plate, and the base plate communicates with the control unit; radio frequency communication is used between the transmitting module and the receiving module; the attenuator group communicates with the transmitting module, and the attenuator group communicates with the S-mode transponder through the upper antenna and the lower antenna, and the attenuator group also communicates with the transponder through the upper mode antenna and the lower mode antenna.

[0054] In this embodiment, specifically, a reflective memory bar is inserted in the remote flight platform; the reflective memory bar in the remote flight platform and the reflective memory bar in the NI chassis are connected via an optical fiber.

[0055] In this embodiment, specifically, when it is necessary to set the aircraft's flight altitude, the TCAS host and the S-mode transponder are powered on, the exciter system is turned on, and the pressure altitude is simulated through the altitude data board and sent to the S-mode transponder through RS429, and the wheel-borne signal is placed in the air state.

[0056] In this embodiment, specifically, the S-mode transponder activation process is as follows:

[0057] The remote flight platform sets the A mode and C mode respectively through the excitation transponder software, and sends them to the exciter system through the reflective memory network. After receiving the command, the TCAS processing module of the exciter starts to excite the S mode transponder. When the exciter excites the transponder according to the parameter setting, it forms an interrogation code and sends the interrogation code information to the transmitting module. The transmitting module forms an interrogation radio frequency signal and completes the interrogation through the designated antenna. When the receiving module receives the reply signal from the designated antenna, it reports the reply signal to the TCAS processing module in the form of an intermediate frequency signal. After the TCAS processing module decodes the reply signal, it obtains the relevant reply information and reports the reply information result to the remote flight platform to display the altitude and code information of the aircraft, such as Figure 7 and Figure 8 shown.

[0058] In this embodiment, specifically, the TCAS host excitation process is as follows:

[0059] The remote flight platform edits the number, position, distance, speed and altitude information of dynamic targets through the dynamic target editing software, sends dynamic instructions through the reflective memory network, and starts to execute the dynamic target simulation process. After the TCAS processing module of the actuator system receives the dynamic command, it starts the target excitation function;

[0060] The exciter receives the interrogation signal from the TCAS host, and the receiving module sends the intermediate frequency signal to the TCAS processing module. After the TCAS processing module decodes the interrogation signal, it obtains the relevant interrogation information, and responds accordingly according to the interrogation information and preset parameters to form an answer code. After passing through the transmitting module, it is sent out through the designated upper antenna or lower antenna to form a complete target simulation process. At the same time, the information is uploaded to the remote flight platform terminal for display. By simulating flight data, the distance, altitude, direction and motion trajectory of the target aircraft relative to the aircraft are calculated to determine whether it poses a potential collision hazard to the aircraft, and whether there is a potential conflict threat in the air interval at the closest point. Avoidance suggestions are output to the pilot. The target simulation editing diagram and simulation generation diagram are shown in the figure. Fig. 9 and Fig.10 As shown in the figure, the flight target situation and target warning diagram are as follows Fig.11 and Fig.12 shown.

[0061] The above-mentioned embodiments only express the specific implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the protection scope of the present application. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the technical solution concept of the present application, and these all belong to the protection scope of the present application.

[0062] This background section is provided to generally present the context of the invention, and the work of the presently named inventors, the work to the extent described in this background section, and aspects of this section that did not constitute prior art at the time of application are neither explicitly nor implicitly admitted to be prior art to the present invention.

Claims

1. An anti-collision excitation system based on reflective memory remote control, characterized in that: include: Remote flight platforms, exciter systems, TCAS hosts and Mode S transponders; The remote terminal communicates with the exciter system via a reflective memory network; The TCAS host and Mode S transponder communicate with the exciter system; The remote flight platform has built-in excitation transponder software and dynamic target editing software, and can set different modes through the excitation transponder software and edit dynamic target information through the dynamic target editing software; The exciter system excites the S-mode transponder and the TCAS host according to the command sent by the remote flight platform, the response signal sent by the S-mode transponder, and the inquiry signal sent by the TCAS host.

2. According to claim 1, the anti-collision excitation system based on reflective memory remote control is characterized in that: The physical topology of the reflective memory network includes: a ring topology or a star topology.

3. The anti-collision excitation system based on reflective memory remote control according to claim 1, characterized in that: The exciter system includes: a cabinet, a display, a NI control extension and an exciter; the display, the NI control extension and the exciter are all installed in the cabinet; the display and the exciter communicate with the NI control extension; the NI control extension communicates with the remote flight platform through a reflective memory network; the exciter communicates with a TCAS host and an S-mode transponder.

4. The anti-collision excitation system based on reflective memory remote control according to claim 3 is characterized in that: The NI control extension includes: an NI chassis, a control unit, a height data board, and a reflective memory bar; the control unit, the height data board, and the reflective memory bar are installed in the NI chassis; and the control unit communicates with the exciter.

5. The anti-collision excitation system based on reflective memory remote control according to claim 4, characterized in that: The exciter includes: an attenuator group, a transmitting module, a receiving module, a TCAS processing module, a power module, and a base plate; the transmitting module, the receiving module, the TCAS processing module, and the power module communicate with the base plate, and the base plate communicates with the control unit; radio frequency communication is used between the transmitting module and the receiving module; the attenuator group communicates with the transmitting module, and the attenuator group communicates with the S-mode transponder through the upper antenna and the lower antenna, and the attenuator group also communicates with the transponder through the upper antenna and the lower antenna of the mode.

6. The anti-collision excitation system based on reflective memory remote control according to claim 5, characterized in that: A reflective memory bar is inserted in the remote flight platform; the reflective memory bar in the remote flight platform and the reflective memory bar in the NI chassis are connected via optical fiber.

7. The anti-collision excitation system based on reflective memory remote control according to claim 6, characterized in that: When the aircraft's flight altitude needs to be set, the TCAS host and S-mode transponder are powered on, the exciter system is turned on, and the pressure altitude is simulated through the altitude data board and sent to the S-mode transponder via RS429, putting the wheel-borne signal in the air.

8. The anti-collision excitation system based on reflective memory remote control according to claim 7, characterized in that: The S mode transponder activation process is as follows: The remote flight platform sets the A mode and C mode respectively through the excitation transponder software, and sends them to the exciter system through the reflective memory network. After receiving the command, the TCAS processing module of the exciter starts to excite the S mode transponder. When the exciter excites the transponder according to the parameter settings, it forms an interrogation code and sends the interrogation code information to the transmitting module. The transmitting module forms an interrogation radio frequency signal and completes the interrogation through the designated antenna. When the receiving module receives the reply signal from the designated antenna, it reports the reply signal to the TCAS processing module in the form of an intermediate frequency signal. After the TCAS processing module decodes the reply signal, it obtains relevant reply information and reports the reply information result to the remote flight platform to display the altitude and code information of the aircraft.

9. The anti-collision excitation system based on reflective memory remote control according to claim 8, characterized in that: The TCAS host excitation process is as follows: The remote flight platform edits the number, position, distance, speed and altitude information of dynamic targets through the dynamic target editing software, sends dynamic instructions through the reflective memory network, and starts to execute the dynamic target simulation process. After the TCAS processing module of the actuator system receives the dynamic command, it starts the target excitation function; The exciter receives the interrogation signal from the TCAS host, and the receiving module sends the intermediate frequency signal to the TCAS processing module. The TCAS processing module decodes the interrogation signal, obtains the relevant interrogation information, and responds accordingly according to the interrogation information and preset parameters to form an answer code. The answer code is sent out through the transmitting module through the designated upper antenna or lower antenna to form a complete target simulation process. At the same time, the information upload result is displayed on the remote flight platform terminal. By simulating flight data, the distance, altitude, azimuth and motion trajectory of the target aircraft relative to the aircraft are calculated to determine whether it poses a potential collision hazard to the aircraft, determine whether there is a potential conflict threat in the air interval at the closest point, and output avoidance suggestions to the pilot.

10. The anti-collision excitation system based on reflective memory remote control according to claim 2, characterized in that: The physical topology of the reflective memory network is a ring topology.

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