Elevator Ethernet Bus Architecture for Scalable Node Communication
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Solution Overview
Problem
Modern elevator systems face inefficiencies due to the use of multiple different communication stacks and physical layers, leading to a complicated and inefficient data transmission solution.
Innovation Solution
Implementing an elevator communication system with a combination of multi-drop Ethernet bus segments and point-to-point Ethernet buses, allowing for separate functional segments and enabling efficient communication between elevator system nodes and controllers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple different internal data transmission solutions are used in modern elevator systems, then various communication needs can be met, but the system becomes complicated and inefficient
Solution Approach 1:
The patent applies universality by implementing a single Ethernet-based communication infrastructure that can handle multiple communication needs within the elevator system. The Ethernet bus system provides a universal platform that replaces multiple different communication stacks and physical layers with one standardized protocol, thereby maintaining communication versatility while eliminating system complexity
Solution Approach 2:
The patent merges multiple separate communication solutions into a unified Ethernet-based system. By combining various data transmission functions into a single Ethernet bus infrastructure, the system eliminates the need for multiple different communication stacks and physical layers, directly resolving the contradiction between adaptability and complexity
2Adaptability or versatility
If multiple different communication stacks and physical layers are used simultaneously, then diverse communication requirements are satisfied, but data transmission efficiency decreases
Solution Approach 1:
The patent changes the fundamental parameters of the communication system by adopting Ethernet as the standardized protocol across all communication interfaces. This parameter change from multiple different protocols to a single Ethernet-based system optimizes data transmission efficiency while maintaining the ability to meet diverse communication requirements through Ethernet's inherent flexibility
3Adaptability or versatility
If a multi-drop Ethernet bus segment is used to connect multiple elevator system nodes, then system scalability is improved, but signal interference may increase
Solution Approach 1:
The patent introduces signal repeaters or extenders as intermediary devices in the multi-drop Ethernet bus configuration. These intermediaries regenerate and clean up signals between nodes, preventing signal degradation and interference while maintaining the scalability benefits of the multi-drop topology. The intermediaries act as mediators that allow the system to scale without suffering from signal interference
Data Source
AI summary
According to an aspect, there is provided an elevator communication system. The system comprises an elevator controller, a multi-drop ethernet bus segment reachable by the elevator controller, and a plurality of elevator system nodes connected to the at least one multi-drop ethernet bus segment configured to communicate via the multi-drop ethernet bus, wherein the elevator controller is reachable by the elevator system nodes via the multi-drop ethernet bus segment.