A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
ONBOARD APPARATUS, PROGRAM, AND KEYLESS ENTRY SYSTEM
To enable the position of a portable apparatus to be specifiable on the basis of the received signal strength of other request signals even when the received signal strength of a request signal cannot partly be obtained.SOLUTION: An onboard apparatus comprises: a plurality of transmit antennas; an onboard apparatus transmit unit for transmitting a request signal from each of the plurality of transmit antennas; an onboard apparatus receive unit for receiving, from a portable apparatus, an answer signal including received signal strength for each request signal transmitted from each of the transmit antennas; and an onboard apparatus control unit for calculating the distance to each area from the portable apparatus on the basis of the received signal strength of each request signal included in the answer signal and the respectively set reference value of received signal strength of each request signal, and specifying an area from among a plurality of areas to which the portable apparatus belongs. When the received signal strength of a request signal not included in the answer signal exists, the onboard apparatus control unit uses the reference value of request signals as the received signal strength of request signals when calculating the distance.SELECTED DRAWING: Figure 1
【課題】リクエスト信号の受信信号強度の一部が得られない場合であっても、他のリクエスト信号の受信信号強度に基づいて、携帯機の位置を特定可能とする。【解決手段】複数の送信アンテナと、複数の送信アンテナからそれぞれリクエスト信号を送信する車載器送信部と、各送信アンテナからそれぞれ送信された各リクエスト信号の受信信号強度を含むアンサー信号を携帯機から受信する車載器受信部と、アンサー信号に含まれる各リクエスト信号の受信信号強度と、複数の領域にそれぞれ設定された各リクエスト信号の受信信号強度の基準値と、に基づいて、携帯機から各領域までの距離をそれぞれ算出し、複数の領域の中から携帯機が属する領域を特定する車載器制御部と、を備え、車載器制御部は、アンサー信号に含まれないリクエスト信号の受信信号強度がある場合、リクエスト信号の受信信号強度として、リクエスト信号の基準値を利用して、距離を算出する。【選択図】図１
ONBOARD APPARATUS, PROGRAM, AND KEYLESS ENTRY SYSTEM
To enable the position of a portable apparatus to be specifiable on the basis of the received signal strength of other request signals even when the received signal strength of a request signal cannot partly be obtained.SOLUTION: An onboard apparatus comprises: a plurality of transmit antennas; an onboard apparatus transmit unit for transmitting a request signal from each of the plurality of transmit antennas; an onboard apparatus receive unit for receiving, from a portable apparatus, an answer signal including received signal strength for each request signal transmitted from each of the transmit antennas; and an onboard apparatus control unit for calculating the distance to each area from the portable apparatus on the basis of the received signal strength of each request signal included in the answer signal and the respectively set reference value of received signal strength of each request signal, and specifying an area from among a plurality of areas to which the portable apparatus belongs. When the received signal strength of a request signal not included in the answer signal exists, the onboard apparatus control unit uses the reference value of request signals as the received signal strength of request signals when calculating the distance.SELECTED DRAWING: Figure 1
【課題】リクエスト信号の受信信号強度の一部が得られない場合であっても、他のリクエスト信号の受信信号強度に基づいて、携帯機の位置を特定可能とする。【解決手段】複数の送信アンテナと、複数の送信アンテナからそれぞれリクエスト信号を送信する車載器送信部と、各送信アンテナからそれぞれ送信された各リクエスト信号の受信信号強度を含むアンサー信号を携帯機から受信する車載器受信部と、アンサー信号に含まれる各リクエスト信号の受信信号強度と、複数の領域にそれぞれ設定された各リクエスト信号の受信信号強度の基準値と、に基づいて、携帯機から各領域までの距離をそれぞれ算出し、複数の領域の中から携帯機が属する領域を特定する車載器制御部と、を備え、車載器制御部は、アンサー信号に含まれないリクエスト信号の受信信号強度がある場合、リクエスト信号の受信信号強度として、リクエスト信号の基準値を利用して、距離を算出する。【選択図】図１
ONBOARD APPARATUS, PROGRAM, AND KEYLESS ENTRY SYSTEM
車載器、プログラム、及びキーレスエントリシステム
SUZUKI YASUHIRO (author) / HAYASAKA SATORU (author) / NAKAJIMA SATOSHI (author)
2020-01-16
Patent
Electronic Resource
Japanese
IPC:
G01S
RADIO DIRECTION-FINDING
,
Funkpeilung
/
B60R
Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen
,
VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
/
E05B
LOCKS
,
Schlösser
/
H04W
WIRELESS COMMUNICATION NETWORKS
,
Drahtlose Kommunikationsnetze