Radio Mesh Network Position Detection System
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Solution Overview
Problem
Existing position detection systems face complications in laying communication cables and are limited in scalability due to the need for independent transmission paths, making it difficult to extend the system with additional receivers.
Innovation Solution
A position detection system utilizing a radio mesh network where receivers communicate with each other and a gateway device, eliminating the need for direct connections to a server device, and implementing a control unit to manage signal strength and information relay, thereby reducing cable complexity and enhancing scalability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If independent transmission paths (communication cables) are used to connect each receiver to the position detection unit, then reliable data transmission is achieved, but the complexity of cable laying increases and system extension becomes difficult
Solution Approach 1:
The patent introduces a gateway device as an intermediary node in the radio mesh network. Receivers that cannot directly communicate with the position detection unit relay their data through intermediate receivers and the gateway device. This mediator approach maintains data transmission reliability while eliminating the need for direct cable connections from each receiver to the central unit.
Solution Approach 2:
The patent replaces the mechanical cable-based transmission system with a radio frequency-based mesh network. Instead of physically connecting each receiver to the position detection unit via cables, the system uses wireless radio signals that can be relayed through multiple nodes, thereby eliminating cable laying complexity while maintaining transmission reliability.
2Reliability
If communication cables are used to connect receivers to the position detection unit, then stable communication is achieved, but the moving space is limited to a narrow area
Solution Approach 1:
The patent transitions from a centralized star topology (all receivers connected directly to one position detection unit) to a distributed mesh network topology. This dimensional change in network architecture allows receivers to communicate through multiple paths and relay nodes, enabling coverage over larger areas without being constrained by cable length or physical connectivity to a central point.
3Measurement precision
If independent transmission paths are provided for each receiver, then accurate position detection is achieved, but system extension (increasing number of receivers) becomes difficult
Solution Approach 1:
The patent designs each receiver to serve multiple functions: it acts as both an end node for position detection and as a potential relay node for data transmission. This multi-functionality allows the system to be easily extended by adding new receivers that automatically integrate into the mesh network, providing both detection capability and transmission pathway without requiring dedicated infrastructure for each node.
Data Source
AI summary
A position detection system (10) includes receivers (20a to 20g) constituting a radio mesh network, and a gateway device (30). Each of the receivers (20a to 20g) includes a receiving unit (22), a sending unit (23), and a control unit (24). When the receiving unit (22) in each of the receivers (20a to 20f) receives the beacon, the control unit (24) generates first reception information containing information indicating signal strength of the received beacon and identification information of the relevant receiver, and sends the first reception information from the sending unit (23). When the receiving unit (22) receives second reception information, the control unit (24) sends the second reception information. When receiving the second reception information generated by the other receiver, the receiver (20g) connected to the gateway device (30) sends the received second reception information to the server device (34) through the gateway device (30).