Elevator Hoistway Wireless Node Groups for Lower Signal Delay
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Solution Overview
Problem
Elevator calling systems experience significant signal delays due to long transmission paths, especially in high-rise buildings, which are unacceptable for efficient operation.
Innovation Solution
A communication system is implemented with at least two communication node groups, where each group includes a first node and second nodes, and a master node that establishes connections with the first nodes within and between groups, using a star or cascade network structure to reduce delay and extend communication distance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wireless modules are deployed along the elevator hoistway with cascade connection, then communication coverage is achieved, but signal transmission delay becomes considerable
Solution Approach 1:
The patent divides the elevator hoistway communication system into multiple communication node groups, each group covering a specific floor range. Within each group, wireless modules are connected in cascade to the first node, which then connects to the master node, creating a hierarchical segmented structure that reduces overall transmission delay.
Solution Approach 2:
The patent introduces a multi-dimensional communication architecture by adding communication nodes at different spatial locations (e.g., different floors, different positions in the hoistway). This allows signals to transmit through multiple dimensional paths simultaneously, reducing the effective transmission distance and delay.
2Area of stationary object
If signal transmission path is extended to cover more floors, then communication coverage increases, but accumulated delay becomes unacceptable
Solution Approach 1:
The communication system is segmented into multiple node groups, each responsible for a specific floor range. This segmentation allows parallel communication paths to be established, where signals can be transmitted through multiple groups simultaneously rather than sequentially through all nodes, thereby maintaining coverage while reducing accumulated delay.
Solution Approach 2:
The master node and first nodes act as intermediaries that establish direct communication connections with key nodes in different floor groups. This intermediary structure creates shortcut paths that bypass the need for signals to traverse every intermediate node, reducing transmission delay while maintaining extended coverage.
3Reliability
If more wireless modules are deployed to improve coverage, then communication reliability increases, but system complexity increases
Solution Approach 1:
The system is divided into independent communication node groups with clearly defined roles (first nodes, second nodes, master node). This segmentation modularizes the complex system into manageable units, making deployment, configuration, and maintenance easier while maintaining high reliability through the distributed architecture.
Solution Approach 2:
The wireless modules are designed with multi-functional capabilities, serving as first nodes, second nodes, or master nodes depending on their position and configuration. This universality reduces the need for different types of devices, simplifying the overall system while maintaining reliability through flexible role assignment.
Data Source
AI summary
A communication system for an elevator system, a communication method for an elevator calling system, and a computer-readable storage medium for implementing the method. A communication system includes at least two communication node groups, each of the communication node groups comprising wireless modules deployed at a plurality of locations of the elevator system, one of the wireless modules in each of the communication node groups is set as the first node and the other wireless modules are set as the second node; a master node, which can be configured to establish a communication connection with one of the first nodes as designed, the first node in each of the communication node groups can be configured to establish a wireless communication connection with the second node belonging to the same communication node group and establish a wireless communication connection with the first node in the adjacent communication node group.