Title:
無線通信システム
Document Type and Number:
Japanese Patent JP7031478
Kind Code:
B2
Abstract:
To appropriately prevent a decrease in signal strength received by a receiver in a radio communication system that transmits a radio wave signal from a transmitter to the receiver via a repeater.SOLUTION: A radio communication system includes: a transmitter (10a) provided correspondingly to a battery unit 2; a receiver (20) connected to an ECU that monitors the state of the battery unit 2; and a repeater (30) that relays and transmits the signal from the transmitter to the receiver. The repeater (30) is disposed at a position that is more away from the receiver (20) than the transmitter (10a) and where there is a transmission frequency at which the amplitude of a combined wave received by the receiver (20) is equal to or larger than the amplitude of a transmission wave.SELECTED DRAWING: Figure 1
Inventors:
Masaya Murase
Hiromasa Tanaka
Yuji Nishi
Hiromasa Tanaka
Yuji Nishi
Application Number:
JP2018090046A
Publication Date:
March 08, 2022
Filing Date:
May 08, 2018
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
H04B7/00; H04B1/713; H04B7/15; H04L1/02; H04W84/18
Domestic Patent References:
| JP2006510326A | ||||
| JP2002024977A | ||||
| JP2014230094A | ||||
| JP2009188551A | ||||
| JP2000209144A |
Foreign References:
| US20090075589 |
Attorney, Agent or Firm:
Fukami patent office
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