Wireless power estimation system, wireless power estimation method, and elevator system

The wireless power estimation system for elevator systems addresses the issue of varying measurement density by ensuring a consistent number of measurements per moving distance, thereby improving the accuracy of the wireless power curve estimation.

JP2025039067APending Publication Date: 2025-03-21HITACHI LTD
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Patent Information

Application Number
JP2023145847
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2023-09-08
Publication Date
2025-03-21

AI Technical Summary

Technical Problem

The accuracy of wireless power curve estimation in elevator systems is impaired due to variations in measurement density caused by the mobile nature of the elevator.

Method used

A wireless power estimation system that includes a first wireless device fixed at a predetermined position, a second wireless device fixed to a mobile elevator, a wireless power acquisition unit, and a wireless power selection unit. The selection unit ensures that the number of wireless power measurements is approximately constant for each predetermined moving distance of the second wireless device.

Benefits of technology

The proposed solution improves the accuracy of the wireless power curve estimated using regression analysis by maintaining a consistent measurement density, thereby enhancing the reliability of wireless power estimation in elevator systems.

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Abstract

To provide a wireless power estimation system, a wireless power estimation method, and an elevator system that can improve the accuracy of a wireless power curve to be estimated using regression analysis from a measurement value of a measured wireless power.SOLUTION: A wireless power estimation system includes a first wireless device fixed at a predetermined position, a second wireless device fixed to a mobile body, a wireless power acquisition unit for acquiring measurement values of wireless power transmitted and received between the first wireless device and the second wireless device, and a wireless power selection unit for selecting a predetermined measurement value to be used for estimating the wireless power curve from among the measured values of wireless power obtained by the wireless power acquisition unit. The wireless power selection unit selects the measured value of wireless power such that the measured density of wireless power is approximately constant in a movement section of the second wireless device.SELECTED DRAWING: Figure 1
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