Redundancy remote data concentrator system

Abstract

The utility model belongs to the technical field of avionics, and particularly relates to a redundancy remote data concentrator system. The remote data concentrator system equipment is provided with 2N remote data concentrators; n is an integer greater than or equal to 1; n equipment cabinets are arranged on the left side of the front cabin of the airplane, and the serial number is an odd number between 1 and 2N; the N devices are arranged on a cabinet on the right side of a forecabin of the airplane and are numbered as an even number between 1 and 2N; the 2N remote data concentrators are completely the same; the i table and the (i + 1) table are grouped into one group; i is an odd number between 1 and 2N; the remote data concentrators in each group collect the same data through the same channel; through redundancy configuration, data information of a power system, a fuel system and other systems can still be accurately reported to other devices on the aircraft when local faults occur in all the devices, the reliability and safety of product devices are improved to a greater extent, the problem that the reliability is not high in single-device or dual-redundancy design in current civil aviation aircrafts is solved, and the reliability of the civil aviation aircrafts is improved. And fault rates such as data loss and the like are greatly reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of avionics, especially relates to a kind of redundant remote data concentrator system. BACKGROUND

[0002] Civil aircraft and airborne product equipment are closely related to public safety, and the safety and reliability of each airborne product and equipment are increasingly required, to improve the reliability and fault-tolerant capability of its avionics system, and it is difficult to meet the requirements of civil aircraft by simply relying on the quality and assembly process of single component or part, and the application of redundancy technology can effectively improve the reliability and capability of remote data concentrator equipment, thereby improving the safety of civil aircraft.

[0003] In the prior art, the common redundancy technology has the following disadvantages: the redundancy design of the series system has low reliability, which cannot meet the requirements of the civil aviation field; the number of redundancies is too large, which increases the corresponding detection, judgment isolation and conversion device, resulting in large weight and volume of avionics system, excessive redundancy, and high cost. UTILITY MODEL CONTENT

[0004] The utility model aims to overcome the problem of low reliability and easy loss of collected data of traditional single remote data concentrator in actual use, and a remote data concentrator system device with redundancy management is designed by using existing redundancy design technology, which can accurately report the data information of on-board power system, hydraulic system and fuel system when local failure occurs, and can meet the reliability and safety requirements of civil aviation field, system weight, volume, cost and redundancy management level requirements, and is more suitable for civil aircraft, greatly improving the reliability and safety of system equipment.

[0005] TECHNICAL SCHEME

[0006] A redundant remote data concentrator system includes 2N remote data concentrators; N is an integer greater than or equal to 1;

[0007] N remote data concentrators are arranged in the left side cabinet of the front cabin of the aircraft, and the odd numbers between 1 and 2N are numbered; N remote data concentrators are arranged in the right side cabinet of the front cabin of the aircraft, and the even numbers between 1 and 2N are numbered; 2N remote data concentrators are completely the same;

[0008] The i-th remote data concentrator and the i+1-th remote data concentrator are coded as a group; i is an odd number between 1 and 2N;

[0009] The remote data concentrators in each group collect the same data through the same channel;

[0010] 2N remote data concentrators are used to collect data of various electromechanical systems on the aircraft and send the collected data to the remote data interface unit on the aircraft.

[0011] Further, the same data is collected by different channels between different groups.

[0012] Further, all the data collected by the remote data concentrators in a group is dispersed to the remote data concentrators in other groups for collection by different channels.

[0013] Further, each remote data concentrator comprises a data interface of 48 analog quantities, 64 switching quantities and 6 frequency quantities, and a 429 output interface.

[0014] Further, each remote data concentrator comprises a power module and a control module.

[0015] The power module converts the 28V power on the aircraft into other forms of power for use by the control module.

[0016] The control module is used for signal collection and processing.

[0017] Further, the control module also sends a switching quantity signal to indicate its own state.

[0018] Beneficial effects:

[0019] A multi-redundancy management remote data concentrator system device, each device is configured with redundancy, and when a local fault occurs, the data information of the power system, the hydraulic system, the fuel system and the like on the aircraft can be accurately reported, the reliability and safety requirements in the field of civil aviation are met, the weight, volume, cost and redundancy management level of the system are comprehensively balanced, the system is more suitable for civil aircraft, and the reliability and safety of the system device are greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0021] Figure 1 A multi-redundancy remote data concentrator system principle block diagram of the present application;

[0022] Figure 2The remote data concentrator composition principle block diagram of the utility model;

[0023] Figure 3 The power module principle block diagram of the utility model;

[0024] Figure 4 The control management module principle block diagram of the utility model;

[0025] Among them, 201 is an overcurrent protection circuit, 202 is an overvoltage protection circuit, 203 is a power filter circuit, 204 is an energy storage circuit, 205 is a DC / DC conversion, 206 is a power monitoring circuit, and 207 is a driving circuit. DETAILED DESCRIPTION

[0026] The embodiments of the present application will be described in detail below with specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in the specification. Obviously, the described embodiments are only some of the embodiments of the present application, not all. The present application can also be implemented or applied by other different specific embodiments, and each detail in the specification can be modified or changed based on different views and applications without departing from the spirit of the present application. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.

[0027] The utility model will be described in further detail below in combination with the drawings, please refer to Figures 1 to 4 A multi-redundancy designed remote data concentrator system device is composed of 8 remote data concentrators, 4 of which are installed in the left cabinet and 4 of which are installed in the right cabinet in the front cabin of the aircraft. On the basis of the double-redundancy structure and circuit form of the left and right cabinets, multi-redundancy configuration is performed to realize multi-redundancy design.

[0028] As Figure 1As shown, the one redundancy design of the remote data concentrator system device, including remote data concentrator 1, remote data concentrator 2, remote data concentrator 3, remote data concentrator 4, remote data concentrator 5, remote data concentrator 6, remote data concentrator 7, remote data concentrator 8. The maximum configuration of each remote data concentrator device has 48 analog input interface, 64 switch quantity, 6 frequency quantity, 1 429 output interface, the product can be configured according to the final configuration requirements of each interface. Among them, remote data concentrator 1, 3, 5, 7 is installed in the left cabinet of the front cabin of the aircraft, remote data concentrator 2, 4, 6, 8 is installed in the right cabinet of the front cabin of the aircraft, remote data concentrator 1, 2 collects data for double redundancy backup, collects the same data, remote data concentrator 3, 4 collects data for double redundancy backup, collects the same data, remote data concentrator 5, 6 collects data for double redundancy backup, collects the same data, remote data concentrator 7, 8 collects data for double redundancy backup, collects the same data, while the data collected by remote data concentrator 1, 2 is also divided into different channels of other 6 devices for collection, the data collected by remote data concentrator 3, 4 is also divided into different channels of other 6 devices for collection, the data collected by remote data concentrator 5, 6 is also divided into different channels of other 6 devices for collection, the data collected by remote data concentrator 7, 8 is also divided into different channels of other 6 devices for collection, through different wiring position, the remote data concentrator device is automatically configured, thus the structure and line form is configured with redundancy, so as to realize the redundancy design of remote data concentrator system device.

[0029] As shown in Figure 2 The remote data concentrator device includes a power module, a control management module.

[0030] As shown in Figure 3 The main function of the power module 101 is to convert the 28V power supply on the aircraft into 5V / ±15V power supply after filtering for other circuit power supply, and provide overcurrent protection 201, overvoltage protection 202, power filter 203, power storage 204, power monitoring 206 and other functions, and the product working state can be displayed on the product panel.

[0031] As shown in Figure 4As shown, the control management module collects switch signals, frequency signals and analog signals, converts the collected analog signals into digital signals, and sends out the signals in ARINC429 format after packet processing according to a specified protocol. In the 64 switch signals, 3 switch signals are reserved to realize self-encoding of the remote data concentrator. Through the wiring installation position of the remote data concentrator on the airplane, the values of the 3 switch signals can be collected and determined, so that the numbering of each remote data concentrator in the remote data concentrator system is realized. For example, if the wiring switch signal installed at the first position of the left cabinet in the front cabin of the airplane is 001, the remote data concentrator performs self-encoding as remote data concentrator 1; if the wiring switch signal installed at the second position of the left cabinet in the front cabin of the airplane is 011, the remote data concentrator performs self-encoding as remote data concentrator 3.

[0032] The above is only a specific embodiment of the present application, which is described in detail, and the part not described in detail is a conventional technology. However, the protection scope of the present application is not limited to this, and any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. The protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A redundant remote data concentrator system, characterized in that: The system comprises 2N remote data concentrators; N is an integer greater than or equal to 1; N remote data concentrators are arranged in the left cabinet of the front cabin of the aircraft, and are numbered as odd numbers between 1 and 2N; N remote data concentrators are arranged in the right cabinet of the front cabin of the aircraft, and are numbered as even numbers between 1 and 2N; The 2N remote data concentrators are completely identical; The i-th remote data concentrator and the i+1-th remote data concentrator are grouped together; i is an odd number between 1 and 2N; The remote data concentrators in each group collect the same data through the same channel; The 2N remote data concentrators are used for collecting data of various electromechanical systems on the aircraft and sending the collected data to a remote data interface unit on the aircraft.

2. A system according to claim 1, wherein: The same data is collected through different channels between different groups.

3. A system according to claim 1, wherein: All the data collected by the remote data concentrators in a group are collected by different channels by the remote data concentrators in other groups.

4. The system of claim 1, wherein: Each remote data concentrator comprises a 48-channel analog quantity, a 64-channel switching quantity and a 6-channel frequency quantity data interface, and a 429 output interface.

5. The system of claim 1, wherein: Each remote data concentrator comprises a power module and a control module; The power module converts the 28V power on the aircraft into other forms of power for use by the control module; The control module is used for signal collection and processing.

6. A system according to claim 5, wherein: The control module also sends a switching quantity signal to indicate its own state.

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