Daisy-Chain Electrical Node for Simultaneous Data and Power Transmission
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Solution Overview
Problem
Current daisy-chain bus technologies are limited in scalability and cost-effectiveness, as they require a fixed number of nodes and are inefficient in reducing the number of wires needed for multiple device connections in industrial automation.
Innovation Solution
A device with a multipolar cable configuration and quick connectors for forming daisy-chain buses, allowing simultaneous serial data and power transmission, where nodes are connected in series with a programmable logic controller, using a Mosfet switch for power control and a microcontroller for data processing, enabling flexible node addition and removal without reorganization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed number of nodes are used in the bus, then the system structure is simple, but the scalability is limited
Solution Approach 1:
The bus system is divided into modular nodes that can be independently added or removed. Each node contains identical functional components (microcontroller, connectors, switch), allowing the system to be segmented into reusable units that scale flexibly without requiring complex reconfiguration of the overall system architecture.
Solution Approach 2:
Each bus node is designed with universal functionality to communicate with both the controller and the next node in the chain. The standardized connectors and identical microcontroller functionality across all nodes enable any node to serve multiple purposes depending on its position in the chain, enhancing scalability without increasing structural complexity.
2Adaptability or versatility
If multiple devices are connected using traditional bus technologies, then the number of wires increases, but the cost and wiring complexity increase
Solution Approach 1:
The invention merges data transmission and power delivery into a single bus structure. The same physical connection carries both control signals and electrical power to multiple devices sequentially, eliminating the need for separate wiring harnesses for each device and significantly reducing overall wiring complexity while maintaining full device connection capability.
3Adaptability or versatility
If nodes are added or removed from the bus, then the system is flexible, but reorganization is required in traditional systems
Solution Approach 1:
The bus system provides self-configuration capability where nodes automatically identify their position in the chain through sequential addressing. When nodes are added or removed, the system automatically renumbers the nodes without requiring manual reconfiguration or system reorganization, allowing flexible node modification while maintaining ease of operation.
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 solution allows for scalable and cost-effective formation of daisy-chain buses with simultaneous data and power transmission, enabling efficient control of multiple points of use with reduced wiring complexity and operational reliability.
Implementation Method 1
the switch 5 is a Mosfet which acts upon the ground conductor by opening and closing the power circuit of the point of use powered by the third connector 4
Implementation Method 2
The first and second contacts 21, 22 of the first connector 2 are electrically connected to the first and second contacts 31, 32 of the second connector 3 respectively via transmission lines 11, 12
Data Source
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AI summary
Electrical node (1) for forming daisy-chain buses with simultaneous serial data transmission and power transmission, comprising three connectors for a multipolar cable. The first connector comprises two contacts for input transmission of power and a contact for unidirectional serial input data transmission. The second connector comprises two contacts for output transmission of power and a contact for unidirectional serial output data transmission. The third connector comprises two contacts for power supply to a point of use; they are electrically connected to the two power contacts of the second connector by a switch. The node also comprises a device that reads a frame from the data contact of the first connector, and closes the switch for a duration depending on a value read from the frame.