Door Controller Reference Position Registration
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Solution Overview
Problem
Conventional methods for adjusting reference positions in door controllers are laborious and time-consuming, requiring manual access to door tracks to move switches or stoppers, which is inefficient, especially in elevator installations with multiple landings.
Innovation Solution
A method and controller that allow reference positions to be registered independently of physical restrictions on the door track, enabling the door to be moved freely and positions verified manually or automatically without interacting with limit or intermediate switches, eliminating the need to access the track for adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual adjustment of switches or stoppers on the door track is used to adjust reference positions, then the reference positions can be adjusted, but the process becomes laborious and time-consuming
Solution Approach 1:
The patent replaces the mechanical adjustment system (manually moving switches and stoppers on the track) with an electronic/software-based system. The controller learns reference positions through software commands that move the door to target positions and record encoder counts, eliminating the need for physical track access and mechanical component adjustment.
Solution Approach 2:
The patent creates a virtual model of the door position system where the controller learns reference positions by commanding the door to move to target positions and recording the corresponding encoder counts. This virtual reference position data replaces the need for physical mechanical reference points on the track.
2Measurement precision
If manual access to door track is required to move switches or stoppers, then reference positions can be adjusted, but the complexity of the adjustment process increases
Solution Approach 1:
The patent replaces the mechanical adjustment system (manually moving switches and stoppers on the track) with an electronic/software-based system. The controller learns reference positions through software commands that move the door to target positions and record encoder counts, eliminating the need for physical track access and mechanical component adjustment.
Solution Approach 2:
The controller automatically performs the reference position learning process by commanding the door to move to target positions and recording the encoder counts. The system self-configures without requiring manual intervention to physically adjust mechanical components, though an operator initiates the process through software commands.
3Measurement precision
If conventional adjustment methods are used for multiple landings, then each landing can be adjusted, but the total time and labor required increases significantly
Solution Approach 1:
The patent replaces the mechanical adjustment system (manually moving switches and stoppers on the track) with an electronic/software-based system. The controller learns reference positions through software commands that move the door to target positions and record encoder counts, eliminating the need for physical track access and mechanical component adjustment.
4Measurement precision
If physical stoppers or limit switches are mounted on the track to define reference positions, then the reference positions can be established, but the device complexity increases
Solution Approach 1:
The patent extracts and removes the physical reference position components (stoppers, limit switches, intermediate switches) from the door track system. Instead, the controller learns reference positions through software by commanding the door to move to target positions and recording the corresponding encoder counts, completely eliminating the need for these mechanical components.
Solution Approach 2:
The patent replaces the mechanical adjustment system (manually moving switches and stoppers on the track) with an electronic/software-based system. The controller learns reference positions through software commands that move the door to target positions and record encoder counts, eliminating the need for physical track access and mechanical component adjustment.
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
Significantly reduces the time and labor required for adjusting reference positions, allowing for quick and accurate registration of positions like the fully open position without additional equipment, minimizing errors and streamlining the process across multiple landings.
Implementation Method 1
A pulse encoder is frequently used to provide the controller with a signal indicating the door position.
Data Source
AI summary
A door controller and a method for inputting or adjusting one or more reference positions into the door controller have the controller connected to a door drive for moving a door and utilize a pulse encoder for monitoring a position of the door and a non-volatile memory for storing the reference position. In a learning mode a control force signal to the drive is reduced. Then the door is moved to the reference position and finally the reference position as recorded by the pulse encoder is registered in the memory of the controller.