A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
CLOSE RANGE RADIO COMMUNICATION SYSTEM FOR VEHICLE, PORTABLE UNIT, AND ON-VEHICLE APPARATUS
PROBLEM TO BE SOLVED: To provide a close range radio communication system for vehicle capable of preventing a smart key from being left inside a vehicle even when the smart key is covered with a metal article inside the vehicle interior.SOLUTION: A close range radio communication system for vehicle: includes a portable unit that receives a first signal and a second signal each transmitted from an out-vehicle antenna and an in-vehicle antenna of an on-vehicle apparatus mounted on a vehicle; measures a strength of a first received signal from the first signal; measures a strength of a second received signal from the second signal; adds an off-set to the strength of the second received signal; and transmits a response signal to the on-vehicle apparatus based on the strength of the first received signal and the strength of the second received signal added with the off-set.
【課題】車室内でスマートキーが金属物により遮蔽された場合においても、スマートキーの車室内への閉じ込めを防止する車両用近距離無線通信システムを提供する。【解決手段】この車両用近距離無線通信システムは、携帯機が、車両に搭載された車載器の車外アンテナ及び車外アンテナからそれぞれ送信された第１の信号及び第２の信号を受信し、第１の信号から第１の受信信号強度を測定し、第２の信号から第２の受信信号強度を測定し、第２の受信信号強度にオフセットを加算し、第１の受信信号強度と、オフセットを加算した第２の受信信号強度とに基づいて、応答信号を車載器に送信する。【選択図】図６
CLOSE RANGE RADIO COMMUNICATION SYSTEM FOR VEHICLE, PORTABLE UNIT, AND ON-VEHICLE APPARATUS
PROBLEM TO BE SOLVED: To provide a close range radio communication system for vehicle capable of preventing a smart key from being left inside a vehicle even when the smart key is covered with a metal article inside the vehicle interior.SOLUTION: A close range radio communication system for vehicle: includes a portable unit that receives a first signal and a second signal each transmitted from an out-vehicle antenna and an in-vehicle antenna of an on-vehicle apparatus mounted on a vehicle; measures a strength of a first received signal from the first signal; measures a strength of a second received signal from the second signal; adds an off-set to the strength of the second received signal; and transmits a response signal to the on-vehicle apparatus based on the strength of the first received signal and the strength of the second received signal added with the off-set.
【課題】車室内でスマートキーが金属物により遮蔽された場合においても、スマートキーの車室内への閉じ込めを防止する車両用近距離無線通信システムを提供する。【解決手段】この車両用近距離無線通信システムは、携帯機が、車両に搭載された車載器の車外アンテナ及び車外アンテナからそれぞれ送信された第１の信号及び第２の信号を受信し、第１の信号から第１の受信信号強度を測定し、第２の信号から第２の受信信号強度を測定し、第２の受信信号強度にオフセットを加算し、第１の受信信号強度と、オフセットを加算した第２の受信信号強度とに基づいて、応答信号を車載器に送信する。【選択図】図６
CLOSE RANGE RADIO COMMUNICATION SYSTEM FOR VEHICLE, PORTABLE UNIT, AND ON-VEHICLE APPARATUS
車両用近距離無線通信システム、携帯機及び車載器
FUJIYAMA JUN (author) / TAKIGAWA MASAMI (author) / HAYASHI NAOKI (author)
2015-10-22
Patent
Electronic Resource
Japanese
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