Elevator Call Registration via Segmented Detection and Grace Period
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Solution Overview
Problem
Conventional elevator call registration systems require a large number of detection devices to prevent false detections, which is inefficient and costly.
Innovation Solution
An elevator call registration system using a lobby detection device and a car detection device for radio communication to read identification information from a storage medium, with a call registration processing device that manages registrations based on a grace period to minimize false detections, allowing the system to function with a small number of detection devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If detection devices are installed in places distant from the elevator to enable beforehand call registration, then call registration can be performed in advance, but a large number of detection devices are required
Solution Approach 1:
The system divides the detection function into two segments: a lobby detection device that reads identification information from users in the lobby area, and a car detection device that reads identification information from users inside the elevator car. This segmentation allows the system to use fewer devices overall while still achieving beforehand call registration, as each device operates in a specific zone rather than requiring multiple devices throughout the building.
Solution Approach 2:
The call registration processing device acts as an intermediary that manages the registration information between the lobby detection device and the elevator control system. It holds registration information for a grace period, allowing the system to distinguish between users who intend to ride the elevator and those who are merely passing by, thereby reducing false detections without requiring additional detection devices.
2Productivity
If detection devices are installed to read identification information from distant locations, then beforehand call registration is enabled, but false detections increase
Solution Approach 1:
The system performs preliminary reading of identification information in the lobby area before the user enters the elevator car. The call registration processing device holds this registration information for a grace period, allowing time to verify whether the user actually intends to ride the elevator by checking for subsequent detection in the car. This preliminary action enables beforehand call registration while providing an opportunity to correct false detections.
Solution Approach 2:
The system uses feedback from the car detection device to verify the accuracy of registrations made by the lobby detection device. If the call registration processing device does not receive confirmation from the car detection device within the grace period, it deletes the registration information, thereby eliminating false detections. This feedback mechanism maintains high detection accuracy while enabling efficient beforehand call registration.
3Reliability
If a grace period is implemented to verify user intention, then false detections are reduced, but system complexity increases
Solution Approach 1:
The system implements a periodic grace period mechanism where the call registration processing device automatically holds registration information for a predetermined time interval, then systematically verifies and deletes information as needed. This periodic action provides a structured, automated approach to reducing false detections without requiring complex real-time decision-making algorithms, thereby limiting the increase in system complexity.
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
The system effectively reduces false detections and operates efficiently with fewer detection devices by managing registrations through a grace period, ensuring accurate call registration without unnecessary device deployment.
Implementation Method 1
a lobby detection device to read out identification information of an elevator user from a storage medium which is carried by the elevator user through a radio communication
Implementation Method 2
a car detection device to read out the identification information of the elevator user from a storage medium which is carried by the elevator user through a radio communication inside of an elevator car
Data Source
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AI summary
A lobby detection device 100 placed in a lobby reads out an ID of an elevator user 300 from an individual identification tag 400 and transmits the ID to an authentication device 600, the authentication device 600 registers the ID if the ID has not been registered and performs a call registration for an elevator car 500 after an authentication processing, a car detection device 200 inside of the elevator car 500 reads out the ID from the individual identification tag 400 and transmits the ID to the authentication device 600, and when the same ID as a registered ID that has been registered becomes no longer transmitted from the car detection device 200, the authentication device 600 deletes a registration of the registered ID after a specific time elapses, so that even when the ID is read out by the lobby detection device 100 in the lobby where the elevator user 300 lands on at the time the elevator user 300 leaves the elevator car 500, a call registration is not performed since the registration is held.