Backup attitude and heading processor test circuit

Abstract

The utility model provides a backup attitude and heading processor test circuit, which comprises an industrial personal computer, a single chip microcomputer, an angle receiving module, an angle indicating module, a signal switching and switching module, a power supply module and a display module, the output end of the single-chip microcomputer is electrically connected with the input end of the angle indicating module, the single-chip microcomputer is electrically connected with the industrial personal computer through the USB-to-RS485 module, the industrial personal computer is electrically connected with the liquid crystal display, the industrial personal computer is electrically connected with the signal switching and switching module through the ARINC429 data module and the USB-to-RS232 module, and the signal switching and switching module is electrically connected with the liquid crystal display. The output end of the signal switching and switching module is electrically connected with the input end of the angle receiving module, and the signal switching and switching module performs bidirectional data transmission with the tested piece backup heading attitude processor and the display module. The circuit completes the detection of the output signal and the working performance of the backup attitude and heading system processor, and can detect the self-inspection function of the backup attitude and heading system processor.

Description

Technical Field

[0001] The utility model relates to the field of digital control, in particular to a backup heading attitude processor test circuit. Background Art

[0002] The backup attitude system processor provides a flight heading signal for the heading position indicator and provides roll and pitch signals for the attitude display device. When the main navigation device cannot provide attitude information, it provides attitude information to the integrated HK system and the integrated display control system, provides heading information for the heading position indicator, and provides roll and pitch information for the attitude display device, which can improve flight safety. Providing attitude information to the integrated HK system and the integrated display control system can improve mission safety. The existing backup attitude system processor detection equipment cannot effectively test the backup attitude system processor. Therefore, developing a backup attitude processor test circuit is an urgent problem to be solved. Summary of the invention

[0003] In view of this, the utility model aims to propose a backup attitude and navigation system processor test circuit to simulate the real environment and parameters of the backup attitude and navigation system processor, and provide equipment and technical support for discovering occasional and hidden faults of the backup attitude and navigation system processor.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0005] A backup attitude processing machine test circuit comprises an industrial computer, a single-chip microcomputer, an angle receiving module, an angle indicating module, a signal switching and transfer module, a power module and a display module. The power module supplies power to the industrial computer, the single-chip microcomputer and the display module. The single-chip microcomputer performs bidirectional data transmission with the angle receiving module and the signal switching and transfer module. The output end of the single-chip microcomputer is electrically connected to the input end of the angle indicating module. The single-chip microcomputer is electrically connected to the industrial computer through a USB to RS485 module. The industrial computer is electrically connected to a liquid crystal display. The industrial computer is electrically connected to the signal switching and transfer module through an ARINC429 data module and a USB to RS232 module respectively. The output end of the signal switching and transfer module is electrically connected to the input end of the angle receiving module. The signal switching and transfer module performs bidirectional data transmission with a backup attitude processing machine and a display module of a tested object.

[0006] Furthermore, the angle indication module includes an ARINC407 angle indication module and an ARINC429 angle indication module, and the output end of the single chip microcomputer is electrically connected to the input ends of the ARINC407 angle indication module and the ARINC429 angle indication module respectively.

[0007] Furthermore, the display module is a current, voltage, and power display module, and its model is DSW-9902-A.

[0008] Compared with the prior art, the backup attitude processing machine test circuit described in the utility model has the following advantages:

[0009] (1) This circuit completes the detection of the output signal and working performance of the backup attitude and heading system processor, and can detect the self-test function of the backup attitude and heading system processor.

[0010] (2) This circuit design is novel in concept and has fundamental innovations in terms of equipment structure, integration, and process compared with previous equipment, significantly improving equipment performance and meeting maintenance needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0012] Figure 1 This is the principle block diagram of the utility model;

[0013] Figure 2 It is the circuit diagram of the industrial computer in the utility model;

[0014] Figure 3 It is a circuit diagram of the single chip microcomputer in the utility model;

[0015] Figure 4 It is a circuit diagram of the angle receiving module in the utility model;

[0016] Figure 5 It is the circuit diagram of the ARINC407 angle indication module in the utility model;

[0017] Figure 6 It is a circuit diagram of the ARINC429 angle indication module in the utility model;

[0018] Figure 7 It is a circuit diagram of the signal switching and transfer module in the utility model;

[0019] Figure 8 It is a circuit diagram of the power module in the utility model;

[0020] Fig. 9 It is a circuit diagram of the current, voltage and power display module in the utility model;

[0021] Fig.10 This is the circuit diagram of the USB to RS485 / RS232 module in the utility model;

[0022] Fig.11 It is a circuit diagram of the ARINC429 data module in the utility model;

[0023] Fig.12 It is a circuit diagram of the utility model. DETAILED DESCRIPTION

[0024] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0025] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0027] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0028] like Figure 1-12As shown, a backup attitude processing machine test circuit includes an industrial computer, a single-chip microcomputer, an angle receiving module, an ARINC407 angle indicating module, an ARINC429 angle indicating module, a signal switching and transfer module, a power module and a display module. The power module supplies power to the industrial computer, the single-chip microcomputer and the display module. The single-chip microcomputer performs bidirectional data transmission with the angle receiving module and the signal switching and transfer module. The output end of the single-chip microcomputer is electrically connected to the input end of the ARINC407 angle indicating module and the ARINC429 angle indicating module. The single-chip microcomputer is electrically connected to the industrial computer through a USB to RS485 module. The industrial computer is electrically connected to a liquid crystal display. The industrial computer is electrically connected to the signal switching and transfer module through an ARINC429 data module and a USB to RS232 module respectively. The output end of the signal switching and transfer module is electrically connected to the input end of the angle receiving module. The signal switching and transfer module also performs bidirectional data transmission with the backup attitude processing machine and the display module of the tested device. The display module is a current, voltage and power display module, and its model is DSW-9902-A.

[0029] The working process of this embodiment is:

[0030] Power on the device:

[0031] The power supply module supplies power to the industrial computer, single-chip microcomputer control, current, voltage, power display module and other related modules. After the "industrial computer" and other modules work normally, the single-chip microcomputer displays the initialization information through the ARINC407 angle indication module and the ARINC429 angle indication module, waiting for system commands, and the current, voltage and power display module displays the relevant voltage, current and power specified channel information.

[0032] Component power supply:

[0033] The industrial computer periodically sends inquiry data frames to the single-chip microcomputer through the USB to RS485 module to inquire whether the backup attitude processing unit of the device under test is powered on. The single-chip microcomputer recognizes that the backup attitude processing unit of the device under test has been connected to the DC power supply 27VDC through the signal switching and transfer module, and recognizes that the signal switching and transfer module encodes the pitch, roll and heading channel switches and angle setting information, and feeds this information back to the industrial computer through the USB to RS485 module. After the industrial computer decodes and identifies the relevant information, it encodes the attitude information of the simulated attitude sensor after setting the relevant information, and sends it to the backup attitude processing unit of the device under test through the USB to RS232 module and the signal switching and transfer module.

[0034] The backup attitude processor of the device under test decodes the attitude data frame information received from the attitude sensor, processes the relevant information, and converts it into the X, Y, Z11.8V / 400HZ analog signal (ARINC407 format) of the synchro (synchronizer) and the data frame signal that complies with the aviation data bus ARINC429 data format, and transmits it through the signal switching and adapter module.

[0035] The signal switching and transfer module converts the transmitted ARINC407 analog signal into a digital format through the angle receiving module, and converts it into a 14-bit binary signal representing the angle attitude information. This signal is read by the single-chip control and sent to the ARINC407 angle indication module for display after calculation and processing. The data frame signal of the aviation data bus ARINC429 data format transmitted by the signal switching and transfer module is sent to the industrial computer through the ARINC429 data module. The industrial computer decodes the data and performs secondary encoding, and sends this information to the single-chip control through the USB to RS485 module. The single-chip computer decodes this information, calculates and processes it, and then sends it to the ARINC429 angle indication module. At this time, the angle information displayed by the ARINC407 angle indication module and the ARINC429 angle indication module is equal or similar, and the error does not exceed 1°.

[0036] At this time, the pitch, roll and heading channel switches and angles can be reset through the signal switching and transfer module. After the change, the ARINC407 angle indication module and the ARINC429 angle indication module display the changed information after the component power supply process.

[0037] The test channel parameters of the current, voltage and power display modules are changed through the signal switching and transfer module, and the changed parameter information is displayed on the current, voltage and power display modules.

[0038] This circuit completes the detection of the output signal and working performance of the backup attitude system processor, can detect the self-test function of the backup attitude system processor, the solution and display function of ARINC407 attitude signal and ARINC429 serial data, and indicate the output voltage signal. It can also be tested with the heading position indicator ZEH-4 to visually check the heading angle output accuracy of the backup attitude. It can monitor whether there are jumps and breakpoints, large indication errors or indication jitters. According to the monitored fault conditions, the ZBHZ-1-01 backup attitude system processor is deeply repaired and repeatedly tested in a targeted manner. The equipment also increases the detection capability of the backup attitude processor ZBHZ-3-01, which meets the use of the maintenance process, achieves the expected functions, and solves the maintenance problem.

[0039] This circuit uses a mature industrial computer, ARINC407 three-phase synchronous signal acquisition and solution circuit and ARINC429 data transceiver module for comprehensive processing, uses a DC voltage circuit meter to indicate the relevant voltage value, and uses an LED digital window to display the angle value solved by ARINC407 and ARINC429, as well as the self-test process data and time. The control parameters can be set directly through the button switch and band switch, and the voltage and current consumption of the input and output of the components can be displayed through the meter. Test points are reserved. General equipment and tools can be used to monitor the input and output signals of the backup attitude system processor, and an interface with the heading position indicator ZEH-4 is reserved to facilitate intuitive display of the working status. The design is divided into hardware principle design, test code writing for the upper and lower computers, and design of the equipment shell panel.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A backup attitude processor test circuit, characterized in that: It includes an industrial computer, a single-chip microcomputer, an angle receiving module, an angle indicating module, a signal switching and transfer module, a power module and a display module. The power module supplies power to the industrial computer, the single-chip microcomputer and the display module. The single-chip microcomputer performs bidirectional data transmission with the angle receiving module and the signal switching and transfer module. The output end of the single-chip microcomputer is electrically connected to the input end of the angle indicating module. The single-chip microcomputer is electrically connected to the industrial computer through a USB to RS485 module. The industrial computer is electrically connected to a liquid crystal display. The industrial computer is electrically connected to the signal switching and transfer module through an ARINC429 data module and a USB to RS232 module respectively. The output end of the signal switching and transfer module is electrically connected to the input end of the angle receiving module. The signal switching and transfer module performs bidirectional data transmission with a backup attitude processor and a display module of the tested component respectively.

2. A backup heading processor test circuit according to claim 1, characterized in that: The angle indication module comprises an ARINC407 angle indication module and an ARINC429 angle indication module, and the output end of the single chip microcomputer is electrically connected to the input ends of the ARINC407 angle indication module and the ARINC429 angle indication module respectively.

3. A backup heading processor test circuit according to claim 1 or 2, characterized in that: The display module is a current, voltage and power display module, and its model is DSW-9902-A.

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