Aircraft Peripheral Communication System Synchronization
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Solution Overview
Problem
Current communication systems for aircraft peripherals are not suited to real-time constraints, leading to synchronization issues and inefficiencies in command and control, particularly due to the proximity of control electronics to devices, which can result in signal propagation delays and losses.
Innovation Solution
A communication system that centralizes peripheral control electronics using a master communication module synchronized with slave communication modules through counter values in data frames, allowing coordinated management of multiple peripherals with temporal consistency, and reduces electronic volume near peripherals by concentrating them in less environmentally constrained areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If control electronics are located near peripheral devices, then signal reception is improved, but synchronization losses and propagation delays occur
Solution Approach 1:
The system segments control functionality into distributed peripheral control units and a centralized control system. Each peripheral control unit is located near its respective device for reliable signal reception, while the centralized system coordinates all units to maintain synchronization across the network, effectively resolving the contradiction between local proximity and global synchronization.
Solution Approach 2:
A message bus serves as an intermediary communication medium between the centralized control system and distributed peripheral control units. This intermediary enables coordinated control while maintaining the beneficial proximity of control electronics to peripheral devices, preventing synchronization losses through structured communication protocols.
2Reliability
If control electronics are centralized, then synchronization is improved, but reaction time to peripherals increases
Solution Approach 1:
The control system is segmented into a centralized coordination layer and distributed execution layer. The centralized system handles high-level coordination and synchronization, while local peripheral control units handle immediate real-time responses, ensuring both global synchronization and local reaction speed.
Solution Approach 2:
The message bus acts as an intermediary that enables the centralized control system to communicate synchronization commands to peripheral units without creating bottlenecks. This intermediary structure allows parallel communication channels that maintain fast local response times while achieving global synchronization.
3Speed
If control electronics are distributed near peripherals, then reaction time is improved, but environmental stress on electronics increases
Solution Approach 1:
The system segments electronics into small distributed control units that can be strategically placed in environmentally favorable locations near peripherals, rather than requiring large centralized equipment in harsh environments. This segmentation allows optimization of both response time and environmental protection.
Solution Approach 2:
Different locations in the aircraft are assigned different functional qualities based on their environmental characteristics. Peripheral control units are placed in locations with acceptable environmental conditions for each specific device, optimizing local performance while considering global system requirements.
4Volume of moving object
If control electronics are centralized, then electronics volume near peripherals is reduced, but communication complexity increases
Solution Approach 1:
The message bus provides a universal communication infrastructure that handles multiple functions (command transmission, status reporting, synchronization) through a single standardized interface. This multi-functionality reduces overall system complexity despite the centralized architecture, as all communication passes through the same standardized channel.
Data Source
Figure 1a
Figure 1b
Figure 2a~3
AI summary
The present invention concerns a system and a communication method for the monitoring and control of at least one peripheral in an aircraft, the system comprising a master communication module (100) connected to the or to each slave communication module (1201, 120N), remote or otherwise, of the master communication module, the or each slave communication module (1201, 120N) being arranged in the vicinity of a controlled peripheral and being connected to a port of the master communication module (100) by a bidirectional link. According to the present invention, the master communication module (100) transmits frames of data including the value of a counter, each slave communication module (1201, 120N) reads the value of the counter included in the received data frame, updates a counter with the value read, checks whether the updated value of the counter corresponds to a time period index associated with the slave communication module and, if so, transfers a data frame to the master communication module (100). The master communication module (100) selects, from a table comprising time period indices and identifiers, the port linking the master communication module (100) to the slave communication module for which the identifier is associated with the time period index that corresponds to the value of the counter.