Multifunctional simulation test platform

Abstract

The utility model belongs to the technical field of aircraft ground tests, and particularly relates to a multifunctional simulation test platform. Comprising a socket, a first coupler, a second coupler, a box-type coupler and a test turntable, the socket, the first coupler and the second coupler are sequentially connected through a bus cable and are used for 1553B bus communication; the sub-line end of the second coupler is connected with inertial navigation, so that the simulation test of the inertial navigation scene without going to the rotary table is realized; the bus end of the second coupler is connected with a box-type coupler, the box-type coupler is connected with a 1553B interface under the rotary table, the 1553B interface on the rotary table is connected with a bus interface at one end of the box-type coupler on the rotary table, a bus interface at the other end of the box-type coupler on the rotary table is connected with a terminal resistor, and the sub-line end of the box-type coupler on the rotary table is connected with an inertial navigation. The simulation test of the inertial navigation upper turntable scene is realized. According to the utility model, hardware resources and preparation time before test are saved, and project development requirements are ensured.

Description

Technical Field

[0001] This utility model belongs to the field of aircraft ground testing technology. It is a simulation test cable. During aircraft simulation testing, the cable can be switched and connected according to different simulation tasks to meet different simulation requirements. Background Technology

[0002] During hardware-in-the-loop (HIL) simulation testing, data communication between various subsystems of the aircraft needs to be conducted via the 1553B bus. Traditional simulation test cables use a line coupler for the 1553B communication module, which can only meet the requirements of a single simulation test (INS without a turntable). To address the limitations of this type of test cable, it is necessary to design a simulation test cable that can meet different simulation test requirements (INS with and without a turntable) and flexibly add 1553B communication for aircraft subsystems as needed. During the design process, it is necessary to fully consider how to simultaneously meet the testing requirements of INS with and without a turntable, and how to flexibly add 1553B communication nodes according to experimental requirements during subsequent testing. Utility Model Content

[0003] Purpose of the utility model: This utility model designs and provides a multi-functional simulation test cable, which aims to meet different simulation test requirements and improve the flexibility and diversity of simulation test cable communication. It can add 1553B communication nodes of the aircraft subsystem according to actual simulation test requirements.

[0004] Technical solution: A multi-functional simulation test platform, comprising a socket, a first coupler, a second coupler, a box-type coupler, and a test turntable; the socket, the first coupler, and the second coupler are connected sequentially via a bus cable for 1553B bus communication; the sub-line of the second coupler is connected to the inertial navigation system (INS) to realize simulation testing of scenarios where the INS is not on the turntable;

[0005] The bus end of the second coupler is connected to the box coupler, the box coupler is connected to the 1553B interface under the turntable, the 1553B interface on the turntable is connected to one end of the bus interface of the box coupler on the turntable, the other end of the bus interface of the box coupler on the turntable is connected to a terminating resistor, and the sub-line end of the box coupler on the turntable is connected to the inertial navigation system, so as to realize the simulation test of the inertial navigation system on the turntable.

[0006] Furthermore, after the box-type coupler is disconnected from the 1553B interface under the stage, an additionally configured terminating resistor is connected to realize the simulation test of the inertial navigation system not being on the turntable.

[0007] Furthermore, the first coupler has a bus termination conversion function, and the bus control terminal of the first coupler is connected to the socket through a bus control line, with a resistor connected in series on the bus control line;

[0008] When a 28V DC voltage is input to the bus control line, the bus terminal is on the box coupler connected to the 1533B-A bus. When the 28V DC voltage is disconnected, the bus terminal is transferred to the first coupler, thus realizing the bus terminal switching.

[0009] Furthermore, they serve as backups for each other: the multi-functional simulation test platform is equipped with two buses. When bus A fails, bus communication can be switched to bus B; buses A and B are arranged in parallel.

[0010] Furthermore, multiple box-type couplers can be arranged in series, allowing for flexible access for bus communication when the number of subsystem products increases.

[0011] Furthermore, the first coupler is a 4M-SDR / AAC line coupler, and the second coupler is a 4M-DBC100 line coupler.

[0012] Technical Benefits: The multi-functional design of the simulation test cable overcomes the limitation of the original simulation test cable, which could only meet the requirements of inertial navigation tests without a turntable. It avoids the need to design and manufacture an additional test cable to meet testing requirements, and can satisfy simulation testing needs for different functions. Furthermore, it allows for the flexible addition of 1553B communication interfaces for aircraft subsystems as needed. This design saves hardware resources and pre-test preparation time, ensuring the project's development requirements are met. Attached Figure Description

[0013] Figure 1 This is a simplified connection diagram of the original simulation test cable 1553B communication module.

[0014] Figure 2 This is a simplified connection diagram of the 1553B communication module of the simulation test cable in this utility model embodiment. Detailed Implementation

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings or specific implementation examples. It should be noted that some (but not all) of the disclosed examples are shown in the drawings. In fact, many different examples can be described, and these examples should not be construed as limited to the examples set forth herein. Rather, these examples are described to better demonstrate the positive effects of this utility model, and all aspects not detailed herein are considered to be well-known or conventional techniques in the art.

[0016] See appendix Figure 1 This is a simplified connection diagram of the 1553B communication module in the original simulation test cable. Figure 2 This is a simplified connection diagram for the 1553B communication module of the current simulation test cable. This utility model fully considers the needs of simulation testing and... Figure 1The 4M-DBC102 line coupler of the 1553B communication module in the original simulation test cable was replaced with... Figure 2 The 4M-DBC100 is a linear coupler. The 4M-DBC102 coupler has one main line and one sub-line, with an internal stopper at the end. This is insufficient for simulation testing on the inertial navigation system, and 1553B communication nodes cannot be flexibly added according to testing requirements. Figure 2 The 4M-DBC100 coupler has two bus lines and one sub-line. When designing the test cable, connect the bus interfaces A2 and B2 of the 4M-DBC100 to the bus interfaces A1 and B1 of the 4M-SDR / AAC coupler, and connect the other bus interfaces A3 and B3 to the connectors ZA and ZB to make the cables extend out. When performing simulation tests on the inertial navigation system (INS) without using the turntable, the INS is connected to the CX2 connector (sub-line) for 1553B communication. Connectors ZA and ZB to the bus interfaces A4 and B4 of the box coupler, which is then connected to the internal stop device. When performing simulation tests on the INS with the turntable, the ZA connector is connected to the bus interface A4 of the lower box coupler on the turntable. The other bus interface A5 of the lower box coupler is connected to the A6 interface of the upper box coupler. Simultaneously, the other end of the upper box coupler is connected to the internal stop device. The INS 1553B communication cable is connected to the sub-line of the upper box coupler for simulation (path B is a backup, so ZB is connected to the box coupler and then to the internal stop device). When simulation tests require temporarily adding subsystems for 1553B communication, multiple box couplers can be connected via connectors ZA and ZB. The subsystems are connected to the sub-line of the box coupler to complete the simulation.

[0017] The above specific embodiments or examples are only used to explain the technical solutions of this utility model and are not intended to limit this application. Parts not described in detail are considered to be conventional technical means or common knowledge in the field. It can be understood by those skilled in the art that, based on the design concept of this application, adaptive modifications can be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. These modifications, equivalent substitutions, and adaptive improvements do not depart from the technical essence of this utility model and should all be covered within the protection scope of this application.

Claims

1. A multifunctional simulation testing platform, characterized in that, It includes a socket, a first coupler, a second coupler, a box-type coupler, and a test turntable; the socket, the first coupler, and the second coupler are connected in sequence via a bus cable for 1553B bus communication; the sub-line of the second coupler is connected to the inertial navigation system to realize simulation testing of the scenario where the inertial navigation system is not on the turntable; The bus end of the second coupler is connected to the box coupler, the box coupler is connected to the 1553B interface under the turntable, the 1553B interface on the turntable is connected to one end of the bus interface of the box coupler on the turntable, the other end of the bus interface of the box coupler on the turntable is connected to a terminating resistor, and the sub-line end of the box coupler on the turntable is connected to the inertial navigation system, so as to realize the simulation test of the inertial navigation system on the turntable.

2. The multifunctional simulation testing platform as described in claim 1, characterized in that, After the box-type coupler is disconnected from the 1553B interface under the stage, an additionally configured terminating resistor is connected to realize the simulation test of the inertial navigation system not being on the turntable.

3. The multifunctional simulation testing platform as described in claim 1, characterized in that, The first coupler has a bus termination conversion function. The bus control terminal of the first coupler is also connected to the socket through a bus control line, and a resistor is connected in series on the bus control line. When a 28V DC voltage is input to the bus control line, the bus terminal is on the box coupler connected to the 1533B-A bus. When the 28V DC voltage is disconnected, the bus terminal is transferred to the first coupler, thus realizing the bus terminal switching.

4. The multifunctional simulation testing platform as described in claim 1, characterized in that, The multi-functional simulation test platform is equipped with two buses, which serve as backups for each other. When bus A fails, bus communication can be switched to bus B; Route A and Route B are arranged in parallel.

5. The multifunctional simulation testing platform as described in claim 1, characterized in that, The first coupler is a 4M-SDR / AAC line coupler, and the second coupler is a 4M-DBC100 line coupler.

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