Title:
DISTANCE MEASUREMENT SYSTEM
Document Type and Number:
WIPO Patent Application WO/2019/181416
Kind Code:
A1
Abstract:
This distance measurement system (2) is provided with: a plurality of communication units (16) that form a radio wave propagation route differing in accordance with the position of a communication device (20) and that are installed on a target of communication (1) so as to enable communication with the communication device by another radio wave propagation route even when one radio wave propagation route is blocked; and a distance measurement unit (4) that measures the distance between the communication device and the target of communication by distance measurement communication in which a distance measurement signal is sent and received via one of the radio wave propagation routes between the communication units and the communication device.
Inventors:
NAIKI KAZUKI (JP)
IWASHITA HIROAKI (JP)
MORI SATOSHI (JP)
KOGA KENICHI (JP)
OYA YOSHIYUKI (JP)
FURUTA MASATERU (JP)
KOSUGI MASANORI (JP)
IWASHITA HIROAKI (JP)
MORI SATOSHI (JP)
KOGA KENICHI (JP)
OYA YOSHIYUKI (JP)
FURUTA MASATERU (JP)
KOSUGI MASANORI (JP)
Application Number:
PCT/JP2019/007832
Publication Date:
September 26, 2019
Filing Date:
February 28, 2019
Export Citation:
Assignee:
TOKAI RIKA CO LTD (JP)
International Classes:
G01S13/74; B60R25/24; E05B49/00
Foreign References:
| JP2014227647A | 2014-12-08 | |||
| JP2011102501A | 2011-05-26 | |||
| JP2015502467A | 2015-01-22 |
Attorney, Agent or Firm:
ONDA Makoto et al. (JP)
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