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    • 4. 发明申请
    • METHOD FOR DISTANCE DETERMINATION
    • WO2021123032A1
    • 2021-06-24
    • PCT/EP2020/086842
    • 2020-12-17
    • STICHTING IMEC NEDERLAND
    • ROMME, Jacobus, Petrus, AdrianusBOER, PepijnYAO, Lichen
    • G01S13/84G01S11/02
    • A method for determining a distance between a first and a second radio signal transceiver comprises receiving (2) a first and second sets of measurement results, wherein the first set is acquired by the first transceiver and transmitted by the second transceiver, the second set is acquired by the second transceiver and transmitted by first transceiver, the first set comprises, for each of a plurality of frequencies, a measurement pair of a phase value and a signal strength value and the second set of measurement results comprises, for each of said plurality of frequencies, a phase value or optionally a measurement pair of a phase value and a signal strength value; calculating (4), for each frequency a preliminary estimate of a value proportional to a one-way frequency domain channel response; calculating (5), for a frequency, a predicted estimate of a representation of said value proportional to said one-way frequency domain channel response, calculating a first (6a) and second (6b) metric distance between said predicted estimate for said frequency and a representation of said preliminary estimate for said frequency or a phase reversal of said representation of said preliminary estimate for said frequency (respectively); determining (8), a final estimate of said value based on a comparison of first metric distance and second metric distance, and determining (10) the distance between the first and the second transceiver based on a plurality of such final estimates.
    • 8. 发明申请
    • SYSTEME DE CONTROLE A DISTANCE ET PROCEDE POUR VERROUILLER ET/OU POUR DEVERROUILLER AUTOMATIQUEMENT AU MOINS UN OUVRANT D'UN VEHICULE AUTOMOBILE ET/OU POUR DEMARRER UN MOTEUR D'UN VEHICULE AUTOMOBILE A L'AIDE D'UN SYSTEME DE CONTROLE A DISTANCE
    • 远程控制系统和用于自动锁定和/或解锁电动机的一个可移动面板和/或用于使用远程控制系统启动电动机发动机的方法
    • WO2013053860A1
    • 2013-04-18
    • PCT/EP2012/070216
    • 2012-10-11
    • JOHNSON CONTROLS AUTOMOTIVE ELECTRONICS SAS
    • PORTET, Vincent
    • G07C9/00G01S13/84
    • G07C9/00007G01S13/84G07C9/00309G07C2009/00555G07C2209/63
    • La présente invention concerne un système de contrôle à distance ainsi qu'un procédé, notamment pour verrouiller et/ou pour déverrouiller automatiquement au moins un ouvrant d'un véhicule automobile et/ou pour démarrer un moteur d'un véhicule automobile, le système de contrôle à distance comprenant un module véhicule destiné à être installé à l'intérieur du véhicule, le système de contrôle à distance comprenant par ailleurs un module portatif destiné à être porté par un utilisateur du système de contrôle à distance, le système de contrôle à distance étant apte à déterminer la distance entre le module véhicule, d'une part, et le module portatif, d'autre part, par l'intermédiaire, d'une part, d'un premier signal radiofréquence émis par une antenne associée au module véhicule, et, d'autre part, d'un deuxième signal radiofréquence émis par une antenne associée au module portatif, le premier signal radiofréquence étant un signal obtenu par une modulation de phase ou par une modulation de fréquence, et le deuxième signal radiofréquence étant un signal obtenu en employant une boucle à verrouillage de phase dans le module portatif, la boucle à verrouillage de phase prenant le premier signal radiofréquence en tant que référence pour générer le deuxième signal radiofréquence.
    • 本发明涉及一种遥控系统以及一种特别是用于自动锁定和/或解锁机动车辆的至少一个可动面板和/或起动机动车辆发动机的方法,所述遥控系统包括车辆 模块,其中所述遥控系统还包括由所述遥控系统的用户承载的便携式模块,所述遥控系统能够经由所述遥控系统经由所述遥控系统确定所述车辆模块与所述便携式模块之间的距离 由与车辆模块组合的天线发射的第一射频信号和由与便携式模块组合的天线发射的第二射频信号,第一射频信号是通过相位调制或频率调制获得的信号,以及第二射频信号 是通过在便携式模块中实现锁相环获得的信号,其中锁相环 使用第一射频信号作为产生第二射频信号的基准。
    • 9. 发明申请
    • RFID TAG LOCATION SYSTEMS
    • RFID标签位置系统
    • WO2011135328A3
    • 2013-03-07
    • PCT/GB2011050762
    • 2011-04-18
    • CAMBRIDGE ENTPR LTDSABESAN SITHAMPARANATHANCRISP MICHAELPLENTY RICHARDWHITE IAN
    • SABESAN SITHAMPARANATHANCRISP MICHAELPLENTY RICHARDWHITE IAN
    • G01S5/14G01S13/84
    • G06K19/0723G01S7/42G01S13/84G01S13/878
    • We describe a methods of locating an RFID tag. One method comprises: transmitting tag location signals from a plurality of different transmit antennas, wherein said antennas are spaced apart by more than a near field limit distance at a frequency of a said signal; receiving a corresponding plurality of receiving return signals from said tag; and processing said tag return signals to determine a range to said tag; wherein said transmitting comprises transmitting at a plurality of different frequencies; wherein said processing comprises determining a phase difference at said plurality of different frequencies to determine said range, and wherein said determining of said phase difference determines a phase difference between either i) two or more of said transmit signals resulting in a maxima in the returned signal RSSI or ii) a first transmit signal and its corresponding return signal; and wherein said determining of said range to said tag uses said return signals weighted responsive to a respective received signal strength of the return signal. Further data which may be used for averaging may be generated by using the above techniques along with changes in the polarisation state of the transmit and receive antennas and/or physical reconfiguration of the antennas (e.g. switch the transmit and receive elements).
    • 我们描述一种定位RFID标签的方法。 一种方法包括:从多个不同的发射天线发送标签定位信号,其中所述天线在所述信号的频率处间隔多于近场限制距离; 从所述标签接收相应的多个接收返回信号; 以及处理所述标签返回信号以确定到所述标签的范围; 其中所述发送包括以多个不同的频率进行发送; 其中所述处理包括确定所述多个不同频率处的相位差以确定所述范围,并且其中所述确定所述相位差确定i)两个或更多个所述发射信号之间的相位差,导致所述返回信号中的最大值 RSSI或ii)第一发射信号及其对应的返回信号; 并且其中所述确定所述标签的所述范围使用响应于所述返回信号的相应接收信号强度而加权的所述返回信号。 可以用于平均的另外的数据可以通过使用上述技术以及发射和接收天线的偏振状态的变化和/或天线的物理重新配置(例如,切换发送和接收元件)来产生。
    • 10. 发明申请
    • CONTACTLESS READER/WRITER
    • 不间断的读者/写作
    • WO2005103755A1
    • 2005-11-03
    • PCT/JP2005/008101
    • 2005-04-21
    • MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.MIYASHITA, Norihiro
    • MIYASHITA, Norihiro
    • G01S13/84
    • G01S13/825G01S5/12G01S13/345G01S13/348G01S13/84
    • It is an object of the invention to provide a contactless reader/writer comprising a transmission section for transmitting a plurality of transmission signals using carrier waves of different frequencies, a reception section for receiving a plurality of reply signals which are a response to a plurality of transmission signals transmitted by the transmission section, a phase calculation section for calculating phase data of the reply signals on the basis of the reply signals, a distance calculation section for calculating a distance to an object having returned the reply signal, on the basis of the phase data from the phase calculation section and/or a speed calculation section for calculating a frequency component of baseband signals on the basis of the baseband signals acquired from the received signal, and thereby calculating a traveling speed of an object having returned the reply signal on the basis of the frequency component, and a control section for controlling a transmission direction of the transmission signals transmitted from the transmission section.
    • 本发明的目的是提供一种非接触读取器/写入器,其包括使用不同频率的载波发送多个发送信号的发送部分,接收部分,用于接收多个应答信号,该应答信号是对多个 由发送部发送的发送信号,基于回复信号计算回复信号的相位数据的相位计算部,基于所述回复信号计算到已经返回了应答信号的对象的距离的距离计算部 来自相位计算部的相位数据和/或速度计算部分,用于基于从接收信号获取的基带信号计算基带信号的频率分量,从而计算已经返回了应答信号的对象的行进速度 频率分量的基础,以及用于控制发射di的控制部分 对从发送部分发送的发送信号的响应。