Title:
OBJECT DETECTION METHOD, OBJECT DETECTION DEVICE, AND OBJECT DETECTION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2021/229812
Kind Code:
A1
Abstract:
In this invention, a wireless transmission device transmits a wireless signal using a plurality of beam patterns and outputs transmission beam identifiers corresponding to the beam patterns to an object detection device. A wireless reception device uses a plurality of beam patterns to receive the wireless signal transmitted by the wireless transmission device, measures the reception signal intensity of each beam pattern, and outputs reception beam identifiers and reception signal intensities to the object detection device. The object detection device detects an object within a detection area on the basis of the transmission beam identifiers, reception beam identifiers, and reception signal intensities. This makes device-free object detection using a beamforming function possible and makes it possible to achieve high detection accuracy with suppressing an increase in cost.
Inventors:
MURAKAMI TOMOKI (JP)
OTSUKI SHINYA (JP)
IWABUCHI MASASHI (JP)
OGAWA TOMOAKI (JP)
OTSUKI SHINYA (JP)
IWABUCHI MASASHI (JP)
OGAWA TOMOAKI (JP)
Application Number:
PCT/JP2020/019523
Publication Date:
November 18, 2021
Filing Date:
May 15, 2020
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE (JP)
International Classes:
G01S13/46
Foreign References:
| JP2019197039A | 2019-11-14 | |||
| JP2015117972A | 2015-06-25 | |||
| JPH06258425A | 1994-09-16 | |||
| GB2044007A | 1980-10-08 |
Attorney, Agent or Firm:
TAKADA, TAKAHASHI & PARTNERS (JP)
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