Water level measurement system, etc.

JP2026100902APending Publication Date: 2026-06-22EIBITSUTO

Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
EIBITSUTO
Filing Date
2024-12-10
Publication Date
2026-06-22

AI Technical Summary

Technical Problem

Existing water level measurement systems using millimeter waves struggle to distinguish reflections from water from those from other objects in flowing rivers, leading to inaccurate measurements.

Method used

A system that analyzes the signal components of reflected millimeter waves for time difference, phase difference, and amplitude, combined with camera imagery, to identify whether the reflection is from water or an object, and uses a learning process to improve identification accuracy.

Benefits of technology

Accurately measures river water levels and recognizes objects floating in rivers, enhancing measurement precision and enabling detection of illegal dumping.

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Abstract

By distinguishing whether the reflected millimeter waves emitted towards the river are reflected from the river water or from an object, the accuracy of water level measurements can be improved. The system also identifies what the object is if it is not water. [Solution] The system analyzes the signal components of the reflected wave and identifies whether the reflected wave is from water or an object based on the time difference, phase difference, and amplitude value compared to the outgoing wave. This identification is learned with each measurement, improving the identification ability. In addition, the system uses images captured by a camera to identify what the object is, and the identification results are also used in the learning process to improve the identification accuracy.
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