Title:
携帯機位置推定システムおよび車載機
Document Type and Number:
Japanese Patent JP7192506
Kind Code:
B2
Abstract:
To provide a portable machine position estimation system that can accurately estimate the position of a portable machine even when it is outside of a vehicle.SOLUTION: A portable machine position estimation system performs the steps of: determining a key distance D, which is a distance between an on-vehicle antenna and an electronic key, with respect to three or more on-vehicle antennas, based on an RSSI of a radio wave received by the electronic key (S150); estimating a key position based on the key distance D (S160); when the key position is outside of a vehicle (S170: YES), determining newly a calibrated key distance Dc in the case that the RSSI, with reference to at least one of the three or more on-vehicle antennas, is a calibrated RSSI calibrated in consideration of a radio wave attenuation due to a metal portion of a vehicle body (S190); and estimating newly the key position using the calibrated key distance Dc (S200).SELECTED DRAWING: Figure 6
Inventors:
▲高▼須賀 直一
Yoichiro Suzuki
▲徳▼永 秀太郎
Yoichiro Suzuki
▲徳▼永 秀太郎
Application Number:
JP2019001364A
Publication Date:
December 20, 2022
Filing Date:
January 08, 2019
Export Citation:
Assignee:
株式会社デンソー
International Classes:
G01S5/14; E05B49/00
Domestic Patent References:
| JP2019158765A | ||||
| JP2013002114A | ||||
| JP2014126540A | ||||
| JP2014025838A | ||||
| JP2017044563A |
Attorney, Agent or Firm:
Kazuyuki Yahagi
Taihei Nonobe
Takanori Kubo
Taihei Nonobe
Takanori Kubo