Elevator Call Verification via Sensor Tracking
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Solution Overview
Problem
Elevator systems face inefficiencies due to 'ghost calls' where passengers register electronic calls but fail to board, leading to unnecessary mechanical strain, power consumption, and load on the controller, as the system lacks verification of passenger location upon call registration.
Innovation Solution
Implementing a sensor-based system that confirms passenger location within a building before dispatching an elevator car, using sensors and a controller to track user device identifiers, provide confirmations, and manage time windows for passenger arrival, thereby canceling calls if the passenger fails to reach the designated region within the allotted time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If electronic call registration is implemented without location verification, then ease of operation is improved, but ghost calls occur causing loss of energy
Solution Approach 1:
The system implements feedback by using sensors to detect the user's location and providing confirmation notifications to the user device. The controller receives sensor data, determines whether the user is at the elevator bank, and sends confirmation or cancellation notifications based on location verification, thereby preventing ghost calls while maintaining ease of operation
Solution Approach 2:
The system performs preliminary action by verifying the user's location through sensor detection before dispatching the elevator car. The controller receives the call request, checks sensor data to confirm user presence at the elevator bank, and only then initiates elevator movement, preventing unnecessary energy consumption from ghost calls
2Loss of energy
If location verification using sensors is implemented, then loss of energy is reduced, but device complexity increases
Solution Approach 1:
The sensor system serves multiple functions: it detects user location for call verification, provides data to the controller for decision-making, and enables confirmation notifications to be sent to users. This multi-functionality reduces the need for separate verification systems, thereby limiting the increase in device complexity while effectively reducing energy loss from ghost calls
3Productivity
If elevator car is dispatched without location confirmation, then productivity is improved, but use of energy increases
Solution Approach 1:
The system uses feedback from sensor detection to determine whether to dispatch the elevator car. The controller continuously monitors sensor data regarding user location and only initiates elevator movement when confirmation is received that the user is at the elevator bank, preventing unnecessary energy consumption while maintaining productivity by quickly responding to valid calls
Data Source
AI summary
An elevator system is provided. Aspects includes at least one elevator car, a plurality of sensors, a controller coupled to a memory, the controller configured to receive a call request for an elevator car from a user device. An identifier is transmitted to the user device and to the plurality of sensors. A location of the user device is determined based at least in part on at least one sensor in the plurality of sensors detecting the identifier on the user device. And the at least one elevator car is operated based on the location of the user device.