Linear Network Node Autoconfiguration Using Current Direction
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Solution Overview
Problem
In electronic systems with multiple connected devices, the complexity of control signal transmission increases with the number of devices, making it difficult to identify and control nodes efficiently, especially in networks requiring unique addresses and layout information.
Innovation Solution
A method of autoconfiguration that allows nodes in a linear network to extract their unique identifiers and relative positions by transmitting current direction information, reducing the need for multiple connections and simplifying the identification process through a communication frame with bit sequences and differential signaling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a master node assigns unique addresses to each node in the network, then node identification is achieved, but the number of connections or pins per node increases
Solution Approach 1:
Nodes automatically determine their own addresses and positions in the network through self-identification procedures. Each node transmits its identifier and detects current direction to autonomously establish its address and relative position without requiring manual assignment or complex wiring configurations
Solution Approach 2:
The patent replaces physical connection-based identification (mechanical system of pins and wires) with electrical signal-based identification using current direction detection. Instead of requiring multiple physical connections for address assignment, the system uses the direction of current flow through the network bus to encode positional information
2Measurement precision
If slave nodes connect with unique available addresses and the master node collects addresses by arbitration, then node identification is achieved, but additional information regarding network layout is lost
Solution Approach 1:
The patent merges address determination and position detection into a single integrated process. By combining the identifier transmission with current direction detection, the system simultaneously obtains both the unique address of each node and its relative position in the network topology, eliminating information loss
Solution Approach 2:
The current flowing through the network bus serves as an intermediary that carries dual information: it enables address arbitration while simultaneously encoding positional data through its direction. This intermediary signal bridges the gap between address assignment and layout detection
3Reliability
If multiple connections or pins per node are used for address assignment, then reliable node identification is achieved, but the number of connection pins increases
Solution Approach 1:
The network bus serves multiple functions simultaneously: it transmits data, assigns addresses through arbitration, and detects node positions via current direction. This multi-functional use of a single communication medium eliminates the need for additional dedicated pins for address assignment while maintaining reliability
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This method enables efficient autoconfiguration of nodes with reduced time and connection pins, providing reliable device control and redundancy against noise, while maintaining low communication bandwidth.
Implementation Method 1
transmitting a current in the network from the chosen node. This allows reading the direction of the current flowing through at least the nodes not chosen in previous iteration cycles
Data Source
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AI summary
A method for autoconfiguration of a plurality of nodes in a linear network allows extracting the address and position of each node. The nodes are identified by a unique identifier. The method comprises choosing a node in a network and extracting its identifier, and for the first node to the last but one node, transmitting a current in the network from the chosen node, and reading the direction of the current (101) flowing through at least the nodes not chosen in previous iteration cycles. The identifier is linked with the direction of the current for said not chosen nodes, obtaining the position of said not chosen nodes relative to the chosen node. These steps are repeated by choosing a different node not chosen before. Autoconfiguration is finished when the identifier of each node is extracted and the physical position of each node is determined.