Elevator Landing Call Control Using Dual Sensor Verification
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Solution Overview
Problem
Existing elevator call systems face inefficiencies in minimizing waiting time due to delayed elevator dispatch and potential false calls caused by indiscriminate sensor detection, which can lead to prolonged waiting times and unnecessary elevator movements.
Innovation Solution
A sensor system comprising first and second type sensors, where the first type sensors generate indications upon object detection, and the control device verifies these with data from second type sensors equipped with devices that communicate wirelessly, only initiating an elevator call if the object is confirmed to need the elevator, thereby reducing false calls and optimizing waiting times.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If automatic sensor-based landing call generation is implemented, then elevator waiting time is reduced, but false landing calls increase due to detection of persons not needing the elevator
Solution Approach 1:
The sensor system is divided into two distinct types: first type sensors for initial detection and second type sensors for confirmation. This segmentation allows the system to separate the functions of detecting potential passengers from verifying actual elevator needs, thereby reducing false calls while maintaining quick response times.
Solution Approach 2:
The system implements a feedback mechanism where the control device receives indications from both first type and second type sensors, cross-references this data, and makes informed decisions about call generation. This feedback loop ensures that elevator calls are only generated when both sensor types confirm actual need, eliminating false calls while maintaining efficiency.
2Reliability
If multiple sensor types are used for verification, then false calls are reduced, but device complexity increases
Solution Approach 1:
Both first type and second type sensors are designed to perform the same fundamental function of detecting objects in the elevator area, but through different technical approaches. This multi-functionality allows the system to achieve reliable verification without requiring completely different sensor types, thereby limiting the increase in device complexity.
Solution Approach 2:
The control device serves as an intermediary that receives and processes indications from both sensor types. It cross-references the data from first type and second type sensors to make informed decisions about call generation, simplifying the overall system architecture while maintaining high reliability through coordinated sensor verification.
Data Source
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AI summary
The solution according to the present invention relates to controlling a generation of an elevator landing call. In the solution at least two different types of sensors are monitored. In response to a detection (320) that the at least one first type sensor (120A, 120B, 120C, 120D) generates an indication on a detection, data indicating a detection by the at least one second type sensor (130A, 130B, 130C) is inquired. If the data inquired does not indicate the detection by the at least one second type sensor (130A, 130B, 130C) a signal is generated (360) causing the generation of the elevator landing call. If the data inquired indicates the detection generated by the at least one second type sensor (130A, 130B, 130C) a generation of the signal (350) causing the generation of the elevator landing call is prevented.