CN112866071A

CN112866071A - ARINC429 bus transceiving multiplexing design method

Info

Publication number: CN112866071A
Application number: CN201911191707.4A
Authority: CN
Inventors: 段敦龙; 王文臣; 段肃玥; 田鑫
Original assignee: Beijing Longkun Shengda Technology Co ltd
Current assignee: Beijing Longkun Shengda Technology Co ltd
Priority date: 2019-11-28
Filing date: 2019-11-28
Publication date: 2021-05-28

Abstract

The invention discloses an ARINC429 bus transceiving multiplexing design method, which relates to the field of communication control, and comprises the following steps: s1: establishing a communication interface layer, simulating the behavior logic of opposite-end equipment, and maintaining continuous communication; s2: reading physical layer information and extracting data, selecting a relay, and only switching a sending signal; s3: extracting protocol layer information, comparing transmitted data with received data by the transmitted equipment, and inquiring the slave equipment by the master equipment in a master-slave mode; s4: the packet is received, restored to the bus packet in the subnet according to the reverse process of steps S1 to S3 and transmitted to another subnet. The invention realizes the interconnection of 8 control terminals, increases the stability, safety and reliability of communication, can reduce the weight of the communication device, can realize the communication in a bus mode after the receiving and sending are integrated, and can realize multi-point intercommunication.

Description

ARINC429 bus transceiving multiplexing design method

Technical Field

The invention relates to the technical field of communication control, in particular to an ARINC429 bus transceiving multiplexing design method.

Background

With the development of communication technology, the airborne communication application is increasing, and besides the real-time communication between the traditional communication navigation system and the ground, the real-time communication and data transmission services between the airborne systems such as avionics system, passenger cabin system, entertainment system, information system and the like and the ground network in the existing civil aviation passenger plane also urge the development and application of various internal and external communication means, including but not limited to: satellite communication, wireless local area network communication, cellular communication, and the like.

The ARINC429 bus adopted at present adopts four shielded signals for wiring, namely, a pair of differential signals are respectively transmitted and received, and only a point-to-point communication mode is adopted, so that the stability, safety and reliability of communication are influenced.

Therefore, an ARINC429 bus transceiving multiplexing design method is provided.

Disclosure of Invention

The invention aims to provide an ARINC429 bus transceiving multiplexing design method, which increases the stability and safety and reliability of communication by interconnecting 8 control terminals, can reduce the weight of a communication device, can realize bus communication after transceiving and can realize multipoint intercommunication so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: an ARINC429 bus transceiving multiplexing design method,

s1: establishing a communication interface layer, forming data connection of a physical communication interface, providing a data channel for the master control single machine and the control single machine, simulating behavior logic of opposite-end equipment, maintaining continuous communication, and acquiring data and physical layer information in a subnet;

s2: reading physical layer information and extracting data, mapping the data into a protocol layer, packaging the data, selecting a receiving and transmitting mode by a physical layer relay, and switching a transmitting signal only by selecting the relay;

s3: extracting protocol layer information, selecting a corresponding communication system to send a data packet, carrying out transceiving management by the protocol layer, namely allowing at most one device on a bus to be in a sending state, comparing sending data with receiving data by the sending device, quitting sending if the sending data is different from the receiving data, adopting a master-slave mode, and inquiring slave devices by the master device;

s4: the packet is received, restored to the bus packet in the subnet according to the reverse process of steps S1 to S3 and transmitted to another subnet.

Preferably, the data channel in S1 includes a receiving and sending channel.

Preferably, the relay selects the electronic relay in S2.

Preferably, the bus in S2 is directly connected to the receiving device.

Preferably, the physical layer in S3 includes a chip and an impedance matching network for receiving the transmission data and providing an electrical interface for the bus.

Preferably, the exit transmission in S3 may be selected by a logic signal through a register.

Preferably, the logic signal comprises a high level exit or a low level exit.

Compared with the prior art, the invention has the beneficial effects that: by interconnecting 8 control terminals, the stability, safety and reliability of communication are improved, the weight of the communication device can be reduced, the communication can be realized in a bus mode after the receiving and the transmitting are integrated, the multi-point intercommunication can be realized, the multi-point interconnection is realized, the wiring difficulty is reduced, the weight of the equipment is reduced, and two signal wires are adopted for carrying out parallel wiring, namely the receiving and the transmitting are integrated.

Drawings

FIG. 1 is a schematic view of the preparation process of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example one

Referring to fig. 1, the present invention provides a technical solution:

an ARINC429 bus transceiving multiplexing design method comprises the following steps:

s2: reading physical layer information, extracting data, mapping the data into a protocol layer, and packaging the data, wherein the physical layer comprises a chip and an impedance matching network which are used for receiving and sending the data and providing an electrical interface for a bus, a physical layer relay selects a receiving and sending mode, selects an electronic relay, can reduce the weight, has quick response time, only switches a sending signal, and is directly connected with a receiving device, as shown in fig. 1, the sending switching function of two paths of ARINC429 is realized, and the sending function of the bus is started after a CHx _ S429 signal sends a high level;

s3: extracting protocol layer information, selecting a corresponding communication system to send a data packet, performing protocol layer transceiving management, namely allowing at most one device on a bus to be in a sending state, comparing sent data with received data by the sent device, if the sent data and the received data are different, quitting sending, selecting a logic signal through a register by a quitting party, and performing high-level quitting or low-level quitting, so that the problem of collision in communication can be effectively solved, adopting a master-slave mode, inquiring slave devices by master devices, and increasing the reliability of communication safety;

The invention realizes interconnection of 8 control terminals, increases the stability, safety and reliability of communication, reduces the weight of the communication device, realizes communication in a bus mode after receiving and transmitting, can realize multi-point interconnection, reduces wiring difficulty, reduces the weight of equipment, and adopts two signal wires to carry out parallel wiring, namely, the receiving and transmitting integrated design.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An ARINC429 bus transceiving multiplexing design method is characterized by comprising the following steps:

s2: reading physical layer information and extracting data, mapping the data into a protocol layer, and packaging the data; the physical layer relay selects a receiving and sending mode; a relay is selected, and only the sending signal can be switched;

2. The ARINC429 bus transceiver multiplexing design method of claim 1, wherein: the data channel in S1 includes a receiving and transmitting channel.

3. The ARINC429 bus transceiver multiplexing design method of claim 1, wherein: the relay selects the electronic relay in S2.

4. The ARINC429 bus transceiver multiplexing design method of claim 1, wherein: the bus is directly connected to the receiving device in S2.

5. The ARINC429 bus transceiver multiplexing design method of claim 1, wherein: the physical layer in S3 includes a chip and an impedance matching network for receiving transmit data and providing an electrical interface for the bus.

6. The ARINC429 bus transceiver multiplexing design method of claim 1, wherein: the exit transmission in S3 may be selected by a logic signal through a register.

7. The ARINC429 bus transceiver multiplexing design method of claim 6, wherein: the logic signal includes a high exit or a low exit.