公开(公告)号：US20130169421A1

公开(公告)日：2013-07-04

申请号：US13726710

申请日：2012-12-26

申请人： DENSO CORPORATION

发明人： Yuukou MURASE ,  Fan WANG ,  Yoshie SUGIURA ,  Akira TAKAOKA

IPC分类号： G08C19/12

CPC分类号： G08C19/12 ,  H04B3/542 ,  H04B3/548 ,  H04L12/40045 ,  H04L12/4645

摘要： A vehicular power line communication system includes a looped twisted pair wire, a master, and a slave. The master outputs a high-frequency signal to the twisted pair wire to transmit power and a signal. The slave includes a looped aperture antenna that receives high-frequency power of the twisted pair wire and a received power measurement portion that monitors received power received at the aperture antenna. The aperture antenna includes an aperture region facing an aperture region between twisted portions of the twisted pair wire.

摘要翻译： 车载电力线通信系统包括环形双绞线，主机和从机。 主机向双绞线输出高频信号以发送功率和信号。 从机包括接收双绞线的高频功率的环形孔径天线和监视在孔径天线处接收的接收功率的接收功率测量部分。 孔径天线包括面对双绞线的扭转部分之间的开口区域的开口区域。

公开(公告)号：US20140133496A1

公开(公告)日：2014-05-15

申请号：US14070729

申请日：2013-11-04

申请人： DENSO CORPORATION

发明人： Yoshie SUGIURA ,  Yuukou MURASE ,  Hirokazu OOYABU ,  Fan WANG ,  Akira TAKAOKA

IPC分类号： H04L12/413

CPC分类号： H04L12/413 ,  H04L12/40045

摘要： In a communication system, nodes are coupled to a transmission path in a bus topology. The nodes communicate with each other via the transmission path using communication signals that have a communication frequency and are synchronized with a power supply signal. Each of the nodes includes a coupling portion that transmits and receives the communication signal and the power supply signal using electromagnetic induction in non-contact with the transmission path. Each of the nodes determines whether a collision of the communication signals occurs on the transmission path based on a voltage level of a signal that has the communication frequency and is induced at the coupling portion.

摘要翻译： 在通信系统中，节点被耦合到总线拓扑中的传输路径。 节点通过使用具有通信频率并与电源信号同步的通信信号经由传输路径彼此通信。 每个节点包括使用与传输路径非接触的电磁感应来发送和接收通信信号和电源信号的耦合部分。 每个节点基于具有通信频率并在耦合部分被感应的信号的电压电平来确定传输路径上是否发生通信信号的冲突。

公开(公告)号：US20140064388A1

公开(公告)日：2014-03-06

申请号：US14013209

申请日：2013-08-29

申请人： DENSO CORPORATION

发明人： Fan WANG ,  Yuukou MURASE ,  Yoshie SUGIURA ,  Akira TAKAOKA

IPC分类号： H04B3/54

CPC分类号： H04B3/548

摘要： In a power line communication system, a master uses a twisted pair wire as a power line and a communication line and outputs a power signal and a data modulation signal to a slave. The slave includes an aperture antenna, a power monitoring portion, and a determining portion. The aperture antenna receives the power signal via the twisted pair wire by electromagnetic induction coupling of an electromagnetic field generated at the twisted pair wire in accordance with an applied current of the twisted pair wire. The aperture antenna has an aperture region facing an aperture region between twists of the twisted pair wire. The power monitoring portion monitors a power of the power signal received via the first aperture antenna. The determination portion determines whether to use another operation power received via the twisted pair wire on the basis of the power monitored by the power monitoring portion.

摘要翻译： 在电力线通信系统中，主机使用双绞线作为电力线和通信线路，并将功率信号和数据调制信号输出到从机。 从机包括孔径天线，功率监测部分和确定部分。 孔径天线根据双绞线的施加电流，通过双绞线线产生的电磁场的电磁感应耦合，经由双绞线接收电力信号。 孔径天线具有面对双绞线之间的开口区域的孔径区域。 功率监视部分监视经由第一孔径天线接收的功率信号的功率。 确定部分基于由电力监视部分监视的功率来确定是否使用经由双绞线接收的另一操作功率。

公开(公告)号：US20150163081A1

公开(公告)日：2015-06-11

申请号：US14514680

申请日：2014-10-15

申请人： DENSO CORPORATION

发明人： Yoshie SUGIURA

IPC分类号： H04L27/26

CPC分类号： H04L27/2602 ,  H04L27/2607 ,  H04L27/2646 ,  H04L27/2666 ,  H04L27/2678

摘要： A master apparatus includes a guard interval length determination portion that requests a plurality of slave apparatuses to cause the slave apparatuses to transmit respective OFDM signals of regular sequence in order without being mutually overlapped. The OFDM signal is obtained by adding a guard interval having a specified initial length to a regular valid symbol that is obtained by applying OFDM modulation to a regular data. A correlator outputs a cross correlation value between the regular sequence and a reception sample sequence. The guard interval length determination portion stores as a delay time a time interval from when the cross correlation value exceeds a first threshold value to when the cross correlation value exceeds a second threshold value. A common length of the guard interval is determined based on the maximum delay time among the delay times with respect to the respective slave apparatuses.

摘要翻译： 主设备包括保护间隔长度确定部分，其请求多个从设备使得从设备按顺序传输正常序列的相应OFDM信号而不相互重叠。 通过将具有指定的初始长度的保护间隔与通过对正常数据应用OFDM调制而获得的规则有效符号相加来获得OFDM信号。 相关器输出常规序列和接收采样序列之间的互相关值。 保护间隔长度确定部分将互相关值超过第一阈值的时间间隔与互相关值超过第二阈值的时间间隔存储为延迟时间。 基于相对于各个从属设备的延迟时间中的最大延迟时间来确定保护间隔的公共长度。

公开(公告)号：US20140226732A1

公开(公告)日：2014-08-14

申请号：US14173003

申请日：2014-02-05

申请人： DENSO CORPORATION

发明人： Fan WANG ,  Hironobu AKITA ,  Hirokazu OOYABU ,  Yoshie SUGIURA ,  Yuukou MURASE

IPC分类号： H04B3/54

CPC分类号： H04B3/54 ,  H04B3/56

摘要： In a master apparatus, a reference device generates a reference signal, a power feeding signal generation portion divides or multiples a frequency of the reference signal to generate a power feeding signal, a first communication carrier generation portion divides or multiples the frequency of the reference signal to generate a first communication carrier, a communication signal generation portion generates a communication signal, and a superimposition portion superimposes the communication signal on the power feeding signal. In a slave apparatus, a separation portion separates the superimposition signal into a power feeding signal and a communication signal, a second communication carrier generation portion divides or multiples a frequency of the power feeding signal separated by the separation portion to generate a second communication carrier, and a modulation and demodulation portion modulates and demodulates a data communication signal to be communicated with the master apparatus using the second communication carrier.

摘要翻译： 在主设备中，参考设备产生参考信号，馈电信号产生部分对参考信号的频率进行分频或倍频以产生供电信号，第一通信载波产生部分将参考信号的频率除或倍数 为了生成第一通信载波，通信信号生成部生成通信信号，叠加部将通信信号叠加在供电信号上。 在从属设备中，分离部分将叠加信号分离成供电信号和通信信号，第二通信载波产生部分分离或分离由分离部分分离的供电信号的频率，以产生第二通信载体， 并且调制和解调部分使用第二通信载体来调制和解调要与主设备通信的数据通信信号。

公开(公告)号：US20130208775A1

公开(公告)日：2013-08-15

申请号：US13761266

申请日：2013-02-07

申请人： Denso Corporation

发明人： Fan WANG ,  Yuukou MURASE ,  Yoshie SUGIURA ,  Akira TAKAOKA

IPC分类号： H04B3/46

CPC分类号： H04B3/46 ,  H04B3/54 ,  H04B3/56

摘要： A vehicular power line communication system includes a master and a slave. The master uses a pair of twisted wires, whose far ends are connected to each other to be loop-shaped, as a power line and a communication line. The master thereby outputs high-frequency signals via the pair of twisted wires, transmitting an electric power and data modulation signals. The slave includes an aperture antenna being loop-shaped to receive data modulation signals using an electromagnetic induction connection in an electromagnetic field generated in the pair of twisted wires in response to an energization current of the pair of twisted wires. The slave further includes an error rate monitor circuit which monitors an error rate of data which are obtained from demodulation of the data modulation signals received via the aperture antenna.

摘要翻译： 车辆电力线通信系统包括主机和从机。 主机使用一对双绞线，其远端彼此连接成环形，作为电源线和通信线路。 从而通过一对双绞线输出高频信号，发送电力和数据调制信号。 从动装置包括一个环形的孔径天线，以响应于该对绞合线的通电电流，在一对扭绞线中产生的电磁场中使用电磁感应连接来接收数据调制信号。 从设备还包括错误率监视电路，该电路监视通过孔径天线接收的数据调制信号的解调获得的数据错误率。