Single-Wire Cascade Addressing for Multi-Device Systems
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Solution Overview
Problem
Conventional multi-device cascade addressing systems require multiple transmission wires for controlling device operations, leading to increased wire costs and unnecessary bandwidth usage due to multiple transmissions of command information.
Innovation Solution
A single-wire multi-device cascade addressing system where devices are connected sequentially, with each device adjusting and relaying an addressing command packet to set unique identification codes, allowing efficient addressing and command transmission without additional clock signal wires.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple transmission wires are used to control device operations in a conventional multi-device cascade addressing system, then device control reliability is improved, but wire costs and system complexity increase
Solution Approach 1:
The patent combines multiple transmission wires (data wire and clock wire) into a single data transmission wire. The system merges the functions of separate data and clock signal transmissions into one wire, reducing wire quantity while maintaining device control capability through sequential addressing mechanisms.
Solution Approach 2:
The single data transmission wire performs multiple functions: it transmits both addressing command packets and data information between devices. The wire serves as both the address bus and data bus, eliminating the need for separate clock signal wires and reducing overall system complexity.
2Adaptability or versatility
If each device individually transmits command information in a conventional multi-device cascade addressing system, then device autonomy is improved, but bandwidth efficiency deteriorates due to multiple transmissions
Solution Approach 1:
The system performs preliminary addressing by assigning unique identification codes to devices before data transmission. The controller sends addressing command packets that contain individual device identification addresses, allowing devices to be pre-identified and addressed sequentially, eliminating redundant command transmissions.
Solution Approach 2:
The system implements feedback mechanisms where devices respond to addressing commands with their identification codes. The controller receives feedback from each device to confirm proper addressing, enabling efficient sequential communication without requiring each device to independently retransmit commands.
Data Source
AI summary
A single-wire multi-device cascade addressing system is provided. In the multi-device cascade addressing system, a plurality of devices are arranged sequentially and connected in series with each other, and a first device and a final device among the plurality of devices are connected to a controller. The first device addresses itself according to an addressing command packet having an individual device identification address from the controller and outputs the adjusted addressing command packet to the next device. Each of the plurality of devices except for the first device addresses itself according to the addressing command packet from the previous device. Each of the plurality of devices except for the first and final devices adjusts the addressing command packet from the previous device, and outputs the adjusted addressing command packet to the next device. The final device transmits the addressing command packet from the previous device to the controller.