Dual Gate Motion Control for Synchronized Closing
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Solution Overview
Problem
Existing systems for controlling dual or multiple gates struggle with synchronous or coordinated movement, often requiring complex sensors and continuous communication, which can lead to operational complexity and increased costs, and fail to ensure both gates reach the closed position simultaneously, especially when travel paths are not identical.
Innovation Solution
A controller determines and adjusts the speed of each motor to synchronize the movement of dual or multiple gates by calculating the time of travel for each gate, allowing them to open and close at the same time, even if their paths differ in length, without the need for continuous communication between gates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If continuous communication and sensors are used to control dual gates, then coordinated movement can be achieved, but device complexity and operational complexity increase
Solution Approach 1:
The controller pre-calculates the time of travel for each gate based on their respective travel paths and speeds before actuation. This preliminary calculation allows the system to determine the exact duration each gate should operate, eliminating the need for continuous communication during gate operation while ensuring coordinated movement.
Solution Approach 2:
The system dynamically adjusts the time of travel for each gate based on their individual characteristics (travel path length, speed). By making the operation duration dynamic and gate-specific rather than synchronized through continuous communication, the system achieves coordination while reducing complexity.
2Ease of operation
If standard gate operators with predetermined run time are used, then operation is simple, but synchronization between gates fails
Solution Approach 1:
The controller changes the run time parameter for each gate operator based on calculated time of travel values. Instead of using a single predetermined run time for all gates, the system customizes the operation duration for each gate according to its specific travel path and speed characteristics, achieving synchronization while maintaining simple operation.
3Manufacturing precision
If learning mode is used for single gate calibration, then proper opening and closing is ensured, but synchronous movement of dual gates cannot be achieved
Solution Approach 1:
The controller segments the calibration process by independently determining the time of travel for each gate separately, then combining these individual calibrations to achieve synchronous operation. This segmentation allows each gate to be precisely calibrated on its own while maintaining the capability for coordinated operation.
Data Source
AI summary
An access control system controls synchronous or coordinated motion of two or more gates using a controller that calculates travel time for each gate and that adjusts the speed of the motors driving the gates to so allow the gates to reach the open and/or closed position at the same time, regardless of the length of the individual travel paths of the gate.