Title:
KEY POSITION DETECTION SYSTEM
Document Type and Number:
Japanese Patent JP2017179873
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a key position detection system capable of accurately determining a key position.SOLUTION: An electronic key 2 acquires magnetic flux direction data Da and reception signal intensity data Dc at the time of receiving a radio wave transmitted from a vehicle 1 and key direction information Db as the electronic key 2's direction at the same time. The vehicle 1 acquires communication target direction information Dd as the vehicle 1's direction. A position determination unit 34 determines the electronic key 2's position on the basis of the magnetic flux direction data Da, key direction information Db, reception signal intensity data Dc, and communication target direction information Dd.SELECTED DRAWING: Figure 1
Inventors:
USHIRO YOHEI
YOSHIKAWA FUMITAKA
YOSHIKAWA FUMITAKA
Application Number:
JP2016068626A
Publication Date:
October 05, 2017
Filing Date:
March 30, 2016
Export Citation:
Assignee:
TOKAI RIKA CO LTD
International Classes:
E05B49/00; B60R25/24; E05B19/00; G01B21/00; G01S5/02; H04Q9/00
Attorney, Agent or Firm:
Makoto Onda
Hironobu Onda
Hironobu Onda
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