CN113055418B - Data transmission method for electromechanical management system - Google Patents
Data transmission method for electromechanical management system Download PDFInfo
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- CN113055418B CN113055418B CN201911371513.2A CN201911371513A CN113055418B CN 113055418 B CN113055418 B CN 113055418B CN 201911371513 A CN201911371513 A CN 201911371513A CN 113055418 B CN113055418 B CN 113055418B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/0893—Assignment of logical groups to network elements
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Abstract
A data transmission method for an electromechanical management system comprises a data sending device, a data bus and a data receiving device, wherein the data sending device sends acquired data to the data receiving device in a data packet mode through a data bus period, the data packet is composed of a health code, an effective data area and a checksum, the health state of the data sending device is judged according to the change rule of the health code of the data packet, whether the data sending device is adopted is determined, the validity of the data packet is judged according to the checksum of each data packet, whether the data packet is adopted is determined, finally, the validity of signals in the signal definition area is judged according to the valid mark of each section of signal definition area in the effective data area of each data packet, and whether the signals in the signal definition area are adopted is determined.
Description
Technical Field
The invention belongs to the technology of aviation electromechanical comprehensive management, and relates to a data transmission method of an electromechanical management system.
Background
Due to the development of microelectronic technology, computer technology and network technology and the development of airborne avionics systems towards high degree of integration, informatization and intellectualization, the integration of airborne electromechanical systems is promoted. The electromechanical system architecture has been transformed from a decentralized architecture, in which devices work independently, to a comprehensive system architecture, in which devices information resources are shared. The integration has important significance for reducing the volume and the weight of an electromechanical system, improving the reliability of the system and reducing the cost of the whole life cycle.
Because the airplane adopts a large comprehensive design and a distributed architecture, the traditional system boundary is broken through, and an electromechanical management system among all electromechanical systems needs a redundancy selection strategy to determine the effective data of the collected information, so that the safety and the reliability of electromechanical management are improved.
Disclosure of Invention
The invention aims to provide a data transmission method of an electromechanical management system. The electromechanical management system comprehensively judges the health state of each device in the electromechanical system, the verification state of a transmitted bus data packet and the validity of source end data through the method, and realizes the functions of display, control, alarm and the like of the electromechanical management system by using the selected redundancy data.
A data transmission method of an electromechanical management system comprises data sending equipment, a data bus and data receiving equipment, wherein the data sending equipment sends acquired data to the data receiving equipment in a data packet mode through the data bus cycle, and the method is characterized by comprising the following steps: 1) the data packet is composed of a health code, an effective data area and a checksum, the effective data area comprises a plurality of sections of signal definition areas, each section of signal definition area is provided with an effective mark of the signal, 2) the data receiving equipment judges the received data packet, firstly judges the health state of the data sending equipment according to the change rule of the health code of the data packet, decides whether to adopt the data sending equipment or not, then judges the effectiveness of the data packet according to the checksum of each data packet, decides whether to adopt the data packet or not, and finally judges the effectiveness of the signal in the signal definition area according to the effective mark of each section of signal definition area in the effective data area of each data packet, and decides whether to adopt the signal in the signal definition area or not.
The beneficial effect of this application lies in: the application provides a redundancy selection strategy for an electromechanical management system, which combines the health state of each device in the electromechanical system, the bus data verification state and the source end data validity to determine the effective data of the collected information, and improves the safety and reliability of electromechanical management.
The present application is described in further detail below with reference to the accompanying drawings of embodiments.
Drawings
Fig. 1 is a configuration block diagram of a data transmission method of an electromechanical management system.
Fig. 2 is a schematic diagram of a packet definition structure.
Detailed Description
A data transmission method of an electromechanical management system comprises data sending equipment, a data bus and data receiving equipment, wherein the data sending equipment sends acquired data to the data receiving equipment in a data packet mode through the data bus cycle, and the method is characterized by comprising the following steps: 1) the data packet is composed of a health code, an effective data area and a checksum, the effective data area comprises a plurality of sections of signal definition areas, each section of signal definition area is provided with an effective mark of the signal, 2) the data receiving equipment judges the received data packet, firstly judges the health state of the data sending equipment according to the change rule of the health code of the data packet, decides whether to adopt the data sending equipment or not, then judges the effectiveness of the data packet according to the checksum of each data packet, decides whether to adopt the data packet or not, and finally judges the effectiveness of the signal in the signal definition area according to the effective mark of each section of signal definition area in the effective data area of each data packet, and decides whether to adopt the signal in the signal definition area or not.
The first digit of the first word defining the data packet is the health code of the data transmitting device. The health code is defined as 0 or 1, and the health codes of adjacent data packets are different and alternate according to period. When the health codes of a plurality of consecutive data packets are the same number, and are simultaneously 0 or simultaneously 1, the data receiving device judges that the health state of the data transmitting device is poor, and determines not to adopt the data packet transmitted by the data transmitting device.
The last word of the data packet is defined as the checksum of the data transmitting device. The check sum is the sum and complement code of the health code of the data packet and all the data in the effective data area. When the checksum of the data packet is accumulated with other data words of the data packet, if the accumulation result is 0, the data packet is valid, otherwise, the data packet is invalid. The valid flag is defined as 0 or 1, when the valid flag is 1, the signal representing the signal definition area is a valid signal, and when the valid flag is 0, the signal representing the signal definition area is an invalid signal.
Claims (8)
1. A data transmission method of an electromechanical management system comprises a data sending device, a data bus and a data receiving device, wherein the data sending device sends acquired data to the data receiving device in a data packet mode through the data bus cycle, and the method is characterized by comprising the following steps: 1) the data packet is composed of a health code, an effective data area and a checksum, the effective data area comprises a plurality of sections of signal definition areas, each section of signal definition area is provided with an effective mark of the signal, 2) the data receiving equipment judges the received data packet, firstly judges the health state of the data sending equipment according to the change rule of the health code of the data packet, decides whether to adopt the data sending equipment or not, then judges the effectiveness of the data packet according to the checksum of each data packet, decides whether to adopt the data packet or not, and finally judges the effectiveness of the signal in the signal definition area according to the effective mark of each section of signal definition area in the effective data area of each data packet, and decides whether to adopt the signal in the signal definition area or not.
2. The electromechanical management system data transmission method of claim 1, wherein a leading digit of the first word defining the data packet is a health code of the data transmission device.
3. The electromechanical management system data transmission method according to claim 1 or 2, wherein the health code is defined as 0 or 1, and the health codes of adjacent data packets are different and alternate periodically.
4. The electromechanical management system data transmission method according to claim 3, wherein when the health codes of a plurality of consecutive data packets are the same number, and are simultaneously 0 or simultaneously 1, the data reception device determines that the health status of the data transmission device is poor, and determines not to adopt the data packet transmitted by the data transmission device.
5. The electromechanical management system data transmission method of claim 1, wherein a last word of the data packet is defined as a checksum of the data transmission device.
6. The electromechanical management system data transmission method according to claim 1 or 5, wherein the checksum is a complement of a sum of the health code of the packet and all data in the valid data area.
7. The electromechanical management system data transmission method according to claim 6, wherein when the checksum of the data packet is accumulated with other data words of the data packet, if the accumulation result is 0, the data packet is valid, otherwise, the data packet is invalid.
8. The electromechanical management system data transmission method according to claim 1, wherein the valid flag is defined as 0 or 1, and when the valid flag is 1, the signal representing the signal definition area is a valid signal, and when the valid flag is 0, the signal representing the signal definition area is an invalid signal.
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| CN110018377A (en) * | 2019-05-09 | 2019-07-16 | 中国航空工业集团公司西安航空计算技术研究所 | A kind of fault detection analysis system of ARINC664P7 terminal device |
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| DE10029834A1 (en) * | 2000-06-16 | 2002-01-03 | Infineon Technologies Ag | Method for transferring data between devices connected via a bus, and device connectable via a bus to other devices |
| CA2734080C (en) * | 2000-10-11 | 2015-02-24 | Healthtrio Llc | System for communication of health care data |
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| CN101504540A (en) * | 2009-03-09 | 2009-08-12 | 成都运达创新科技有限公司 | Control system and method for safe and intelligent I/O combination system |
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