Elevator Control Device Weight-Based Passenger Entry Judgment
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Solution Overview
Problem
Existing elevator control devices cannot determine whether passengers in a hall can enter the elevator based on their weight, leading to potential overcrowding or missed stops.
Innovation Solution
An elevator control device that includes an acquisition unit to measure the weight of passengers both inside the elevator and in the hall, a judgment unit to assess whether hall passengers can enter based on the weights, and a control unit to manage elevator operations accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the elevator control device uses only camera-based passenger detection, then the device complexity is reduced, but the measurement precision of passenger weight is insufficient to accurately determine if passengers can enter the car
Solution Approach 1:
The patent applies multi-functionality by integrating both camera-based detection and weight sensing capabilities into a single elevator control system. The acquisition unit combines image data from cameras with weight data from weighing devices to comprehensively assess passenger conditions, enabling accurate determination of whether passengers can safely enter the car while managing device complexity through unified control architecture.
2Reliability
If the elevator control device acquires weight information of passengers in the hall, then the judgment accuracy of passenger entry capability is improved, but the device complexity increases due to additional acquisition units
Solution Approach 1:
The patent merges multiple data acquisition functions into a unified control architecture where the acquisition unit collects both image data and weight data, and the judgment unit integrates these diverse data types to determine passenger entry capability. This combining approach improves reliability while managing complexity through centralized processing.
Solution Approach 2:
The system implements feedback mechanisms where weight information acquired from passengers in the hall is fed back to the judgment unit, which then determines whether the car should stop to pick up passengers. This feedback loop enhances the accuracy of passenger entry judgment by continuously monitoring and responding to weight-based constraints.
3Productivity
If the elevator control device makes stop decisions based only on passenger count, then the control simplicity is maintained, but the transportation efficiency decreases due to potential overcrowding
Solution Approach 1:
The patent changes the parameters used for stop decision-making from simple passenger count to comprehensive assessments including passenger weight, image data, and calculated center of gravity. By transforming the decision parameters to include physical constraints like weight limits and structural center of gravity, the system achieves higher transportation efficiency while managing algorithmic complexity through systematic parameter integration.
Data Source
AI summary
An elevator control device according to the present disclosure includes an acquisition unit, a judgment unit, and a control unit. The acquisition unit acquires an on-car weight that is a weight of a passenger or passengers inside a car and an on-hall weight that is a weight of a passenger or passengers in a hall. The judgment unit performs first judgment of judging whether or not the passenger or passengers in the hole can get in the car based on the on-car weight and the on-hall weight acquired by the acquisition unit. The control unit controls an elevator device according to judgment of the judgment unit.