Wireless Control System Using Group-Based Routing
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Solution Overview
Problem
Conventional wireless control systems face issues with load imbalance on gateway nodes and reduced flexibility due to limitations in communication distance and wiring, leading to decreased control accuracy and system performance.
Innovation Solution
Assigning group IDs to each gateway and wireless node, allowing them to select routes with the best communication quality for data transmission, and using GW information notice data to optimize routing decisions based on route cost information and group IDs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wireless nodes transmit data through multiple relay nodes in a mesh network, then data can reach the supervisory node, but the communication load on gateway nodes increases significantly
Solution Approach 1:
The patent segments the wireless sensor network into multiple groups, each group assigned to a specific gateway node. Wireless nodes only communicate with gateway nodes of their own group, preventing all nodes from routing through single gateway nodes and thus distributing the communication load across multiple gateways.
Solution Approach 2:
The patent implements local routing where wireless nodes transmit data to gateway nodes within their local group rather than routing through distant or overloaded gateways. This local quality approach reduces transmission distance and gateway load while maintaining network reliability.
2Productivity
If gateway nodes are added to increase network capacity, then more wireless nodes can be supported, but system complexity and installation difficulty increase
Solution Approach 1:
The patent implements automatic group ID assignment and route selection where wireless nodes automatically determine their group affiliation and select appropriate gateway nodes without manual configuration. This self-service mechanism reduces installation complexity while supporting increased network capacity through additional gateway nodes.
3Measurement precision
If wireless nodes are installed at optimal positions for measurement, then control accuracy improves, but communication distance limitations prevent reaching optimal positions
Solution Approach 1:
The patent adds the dimension of multi-hop wireless communication through mesh networking, allowing data to traverse multiple intermediate nodes to reach gateway nodes. This enables sensors to be placed at optimal measurement positions regardless of direct communication distance limitations, as data can relay through intermediate wireless nodes.
4Productivity
If manual route configuration is used for data transmission, then routing can be optimized, but system adaptability to node additions or removals decreases
Solution Approach 1:
The patent implements dynamic route selection where wireless nodes automatically adjust their transmission paths based on current network conditions and gateway availability. When gateway nodes are added or removed, the system dynamically adapts routing decisions without requiring manual reconfiguration, maintaining both efficiency and flexibility.
Data Source
AI summary
The invention realizes a wireless control system capable of reducing loads on a wireless network and gateway nodes and improving reliability of the system. The wireless control system for collecting data from a plurality of wireless nodes constituting a wireless network to a supervisory node via gateway nodes, wherein said each gateway node and said each wireless node have group IDs assigned thereto in advance and said each wireless node selects a route having the most excellent communication quality of routes leading to the gateway nodes having the same group ID as a self-node and transmits data to the selected route.