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    • 1. 发明专利
    • Power demand regulating system
    • 电力需求调节系统
    • JP2013066320A
    • 2013-04-11
    • JP2011204060
    • 2011-09-20
    • Hitachi Ltd株式会社日立製作所
    • ISHII TSUNEYOSHISHIGA MASAHITOSAITO SUNAO
    • H02J3/00G06Q50/06
    • PROBLEM TO BE SOLVED: To inhibit imbalance between supply power amount and demand power amount by proposing a use agreement with appropriate incentives to a demand side for encouragement of cooperation when the demand power amount on the demand side is more than the supply amount on the supply side and supply shortage power is predicted to occur and by executing forced stop control of power supply.SOLUTION: On the basis of demand balance information of electric power, an individual-consumer use agreement proposal section transmits a control command for reducing or blocking power supply for a consumer, adjusts the power supply using a plurality of switches and prepares a use agreement including possible use power amount and electricity rate. In addition, the individual-consumer use agreement proposal section prepares a use agreement with a power rate reduced according to use power amount.
    • 要解决的问题:通过在需求方的需求量大于供给量的情况下,通过向需求方提出适当的激励以鼓励合作的使用协议来抑制供电量和需求功率量之间的不平衡 在供应方面,预计供电短缺,并通过执行电源的强制停止控制。 解决方案:根据电力需求平衡信息,个人消费者使用协议提案部分发送用于减少或阻止消费者电源的控制命令,使用多个开关调整电源并准备一个 使用协议,包括可能的使用电量和电费率。 此外,个人消费者使用协议提案部分准备使用协议,功率利用率根据用电量减少。 版权所有(C)2013,JPO&INPIT
    • 2. 发明专利
    • Radio communication device, radio communication system, and radio communication method
    • 无线电通信设备,无线电通信系统和无线电通信方法
    • JP2012256974A
    • 2012-12-27
    • JP2011127459
    • 2011-06-07
    • Hitachi Ltd株式会社日立製作所
    • SAITO SUNAOICHINOSE YUJIMURATA SHINJISHIGA MASAHITO
    • H04W16/28H04B7/06H04B7/08H04W4/04H04W4/06H04W16/26
    • PROBLEM TO BE SOLVED: To provide antenna selection processing of antenna diversity for wirelessly communicating with multiple communication partners with high reliability.SOLUTION: When a base station 10 has received notification of a measurement result of communication quality from each relay station 20, the base station 10 determines combination of antenna 431a, 431b and antenna 431c, 431d used for transmitting and receiving a reference signal with the highest measurement result of communication quality for each relay station 20; and selects the determined antenna 431a as an antenna to be used for broadcast of a radio signal; and each relay station 20 selects the antenna 431c, 431d with the highest measurement result of communication quality as an antenna used for broadcast of a radio signal when the antenna 431a used for broadcast of a radio signal selected by the base station 10 is used as a transmission antenna.
    • 要解决的问题:提供天线分集的天线选择处理,以与多个通信伙伴进行无线通信,具有高可靠性。 解决方案:当基站10从每个中继站20接收到通信质量的测量结果的通知时,基站10确定用于发送和接收参考信号的天线431a,431b和天线431c,431d的组合 每个中继站20的通信质量测量结果最高; 并将所确定的天线431a选择为用于广播无线电信号的天线; 并且每个中继站20选择具有通信质量最高测量结果的天线431c,431d作为用于广播无线电信号的天线,当用于由基站10选择的无线电信号的广播的天线431a用作 发射天线。 版权所有(C)2013,JPO&INPIT
    • 3. 发明专利
    • Communication system in trains
    • 火车通讯系统
    • JP2008244684A
    • 2008-10-09
    • JP2007080453
    • 2007-03-27
    • Hitachi Ltd株式会社日立製作所
    • SAITO SUNAOARITA SETSUOITO SATORUAYABE KAZUNORISAGAWA YUKIO
    • B61D37/00B61L25/02H04B7/26H04H20/62H04N7/173H04N21/222H04N21/231H04N21/262H04W4/04
    • B61D49/00B61L15/0036B61L15/009
    • PROBLEM TO BE SOLVED: To easily realize transmission of high-quality moving image information and audio information by digital data signals, to reduce the influence of disconnection of a transmission line or failure of a communication device, and to provide a highly reliable communication system in trains. SOLUTION: A control data communication device 400 and an image data communication device 300 are installed in each car. The control data communication device 400 transmits train operation information, train location information, control instructions of train-mounted apparatuses, and the like. The image data communication device 300 transmits image information such as moving images and still images, audio information such as in-train announcement, textual information for caption display, and operation log information of apparatuses, which form the contents, to a display unit 200 installed in each car and to apparatuses 500 such as a telephone. The display unit 200 switches the display contents on the screen in accordance with train control information transmitted from the control data communication device 400 through the image data communication device 300. COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:为了容易地通过数字数据信号实现高质量运动图像信息和音频信息的传输,以减少传输线的断开或通信装置的故障的影响,并且提供高可靠性 火车通信系统

      解决方案:控制数据通信设备400和图像数据通信设备300安装在每个车厢中。 控制数据通信装置400发送列车运行信息,列车位置信息,列车装置的控制指令等。 图像数据通信装置300将形成内容的诸如运动图像和静止图像的图像信息,诸如列车内公告的音频信息,字幕显示的文本信息和装置的操作日志信息发送到安装的显示单元200 在每个车中以及诸如电话的设备500。 显示单元200根据从控制数据通信设备400通过图像数据通信设备300发送的列车控制信息在屏幕上切换显示内容。(C)2009年,JPO和INPIT

    • 4. 发明专利
    • Communication device for rail vehicles
    • 铁路车辆通讯装置
    • JP2008113103A
    • 2008-05-15
    • JP2006293463
    • 2006-10-30
    • Hitachi Ltd株式会社日立製作所
    • ICHINOSE YUJISAITO SUNAOARITA SETSUO
    • H04L12/28B60L15/42H04J11/00
    • Y02T90/16
    • PROBLEM TO BE SOLVED: To provide a communication device for a rail vehicle with high communication performance to signal attenuation and noise between the vehicles which cause problems when an information network is established in a train.
      SOLUTION: As for the configuration of the communication device for the rail vehicle, a relay device 3 is connected to a network connected with a terminal in the vehicle, and the device modulates a communication frame and alternately transmits it to a relay device 3 of the other adjacent vehicle. By this arrangement, the communication device has strong resistance to signal attenuation or noise, and can improve communication stability even for a straight pull wire, a signal line for a train. Since data collision does not occur at the time of transmission between the relay devices 3, latency is short and efficient transmission becomes possible. In addition, each of the relay devices 3 adopts a configuration that transmission is alternately performed, and transmission is resumed when transmission from one side is stopped for a period longer than a predetermined time. Thereby, the communication device can cope with the separation and connection of the vehicles easily.
      COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:提供一种具有高通信性能的轨道车辆的通信装置,以在信号网络建立在列车中时引起车辆之间的衰减和噪声导致问题。 解决方案:对于轨道车辆的通信装置的配置,中继装置3连接到与车辆中的终端连接的网络,并且该装置对通信帧进行调制并交替地将其发送到中继装置 3的其他相邻车辆。 通过这种布置,通信设备对信号衰减或噪声具有很强的抵抗力,并且即使对于用于列车的信号线的直拉线也可以提高通信稳定性。 由于在中继设备3之间的传输时不发生数据冲突,所以等待时间短,有效的传输成为可能。 另外,每个中继装置3采用交替执行发送的结构,并且当从一侧的发送停止超过预定时间的时间时,恢复发送。 因此,通信装置可以容易地应对车辆的分离和连接。 版权所有(C)2008,JPO&INPIT
    • 5. 发明专利
    • Ofdm communication apparatus
    • OFDM通信设备
    • JP2006074081A
    • 2006-03-16
    • JP2004251220
    • 2004-08-31
    • Hitachi Ltd株式会社日立製作所
    • ICHINOSE YUJISAITO SUNAOARITA SETSUOISHII YOSHIKAZUNIIMA DAISUKE
    • H04J11/00
    • PROBLEM TO BE SOLVED: To solve the problem that transmission efficiency is deteriorated in an OFDM communication apparatus, in particular, when transmission data are short because a symbol for communication control such as a reference symbol or a transmission path symbol must be transmitted in an OFDM communication apparatus.
      SOLUTION: In an OFDM symbol consisting of a plurality of carriers, one carrier is arranged as a reference carrier and the other carriers are arranged as data carriers for transmitting data, and a differential modulator applies differential modulation to an adjacent carrier and the generated differential transmission data are transmitted. In a receiver side, the differential demodulator demodulates the data from frequency region signals of the two adjacent signals. Thus, since the proportion of data carriers occupied in the number of all the carriers is large, the transmission efficiency is especially improved if the number of transmission data is small.
      COPYRIGHT: (C)2006,JPO&NCIPI
    • 解决的问题为了解决OFDM通信装置中的传输效率恶化的问题,特别是当传输数据较短时,因为必须传送诸如参考符号或传输路径符号的通信控制的符号 在OFDM通信装置中。 解决方案:在由多个载波组成的OFDM符号中,一个载波被布置为参考载波,并且其他载波被布置为用于传输数据的数据载波,并且差分调制器对相邻载波进行差分调制,并且 发送差分发送数据。 在接收机侧,差分解调器从两个相邻信号的频域信号中解调数据。 因此,由于所有载波数量占用的数据载体的比例大,所以如果发送数据数量少,则传输效率特别提高。 版权所有(C)2006,JPO&NCIPI
    • 7. 发明专利
    • Power distribution system monitoring control device, power distribution system monitoring control method, and photovoltaic power generation system
    • 电力分配系统监控控制装置,电力分配系统监控控制方法和光伏发电系统
    • JP2013121305A
    • 2013-06-17
    • JP2011269645
    • 2011-12-09
    • Hitachi Ltd株式会社日立製作所
    • ICHINOSE YUJIMURATA SHINJISAITO SUNAO
    • H02J3/00H02J13/00
    • Y02B10/14Y02B10/30Y02E40/72Y04S10/123
    • PROBLEM TO BE SOLVED: To reduce a rise in power distribution line voltage which occurs when a photovoltaic power generation system is connected to a power distribution system, as well as reduce a frequency at which consequential power injection from the photovoltaic power generation system into the power distribution system is restricted.SOLUTION: A power distribution line 6b connected to a CB 3b via an LRT 2 of a substation 1 has a section switch 7, an SVR 90 and a pole transformer 10a connected thereto, the pole transformer 10a having a low voltage distribution line 11a connected to the secondary side circuit thereof. A dwelling house 12c connected to the low voltage distribution line 11a has a photovoltaic power generation system constructed thereon, to which are connected a solar panel 13c and a PCS 14c to adjust the generated power of the solar panel 13c. Operation history information 21a of the PCS 14c is fed into a PCS operation condition input terminal 28 of a power distribution system monitoring control device 46 via a communication IF 20, and the voltage distribution of the power distribution line 6b is analyzed by a system analysis server 26. The voltage levels of the LRT 2, the SVR 90 and the pole transformer 10a are optimally determined on the basis of the result of voltage distribution analysis of the power distribution line 6b.
    • 要解决的问题:为了减少当光伏发电系统连接到配电系统时发生的配电线路电压的上升,以及降低从光伏发电系统引起的相应功率注入的频率 进入配电系统受到限制。 解决方案:通过变电站1的LRT 2连接到CB 3b的配电线路6b具有分段开关7,SVR 90和与其连接的极变压器10a,极变压器10a具有低电压分配线 11a连接到其次级侧电路。 连接到低压配电线路11a的住宅室12c具有构造在其上的光伏发电系统,太阳能电池板13c和PCS 14c连接到太阳能电池板13c以调节太阳能电池板13c的发电功率。 PCS14c的运行历史信息21a经由通信IF20馈送到配电系统监视控制装置46的PCS运转状态输入端子28,配电线路6b的电压分配由系统分析服务器 基于功率分配线6b的电压分布分析的结果,最优地确定LRT2,SVR90和极变压器10a的电压电平。 版权所有(C)2013,JPO&INPIT
    • 8. 发明专利
    • Radio communication method, radio communication program, and radio communication device
    • 无线电通信方法,无线电通信程序和无线电通信设备
    • JP2010093694A
    • 2010-04-22
    • JP2008263837
    • 2008-10-10
    • Hitachi Ltd株式会社日立製作所
    • MURATA SHINJIICHINOSE YUJIARITA SETSUOSAITO SUNAO
    • H04W28/04H04W28/06
    • PROBLEM TO BE SOLVED: To improve transmission efficiency of data communication under environment of radio communications.
      SOLUTION: When a payload to be transmitted arrives, a transmitter 1a divides the payload into a plurality of divided data by a fixed length. In this case, a frame is generated by adding an error checking code for checking the content of the divided data for the respective divided data and a consecutive number for specifying the divided data. A plurality of blocks which continue by consecutive numbers are connected, and then a frame is formed so as to be transmitted one by one to a receiver 1b. When a breakage block exists, the receiver 1b returns ACK for specifying retransmission of a breakage block to the transmitter 1a.
      COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:提高无线电通信环境下数据通信的传输效率。 解决方案:当待传输的有效载荷到达时,发射机1a将有效负载划分成多个分割的数据固定长度。 在这种情况下,通过添加用于检查各分割数据的划分数据的内容的错误校验码和用于指定分割数据的连续数字来生成帧。 连续连续的多个块连接,然后形成帧,以便一个接一个发送到接收机1b。 当存在断裂块时,接收机1b向发射机1a返回用于指定断裂块重发的ACK。 版权所有(C)2010,JPO&INPIT
    • 9. 发明专利
    • Flow-measuring apparatus
    • 流量测量装置
    • JP2009122054A
    • 2009-06-04
    • JP2007298775
    • 2007-11-19
    • Hitachi Ltd株式会社日立製作所
    • SAITO SUNAOMORINO TAKESHIOKAMOTO HIROKIHANZAWA KEIJIONIKAWA HIROSHIYASUKAWA AKIO
    • G01F1/684G01F15/12
    • G01F1/6845G01F5/00G01F15/12
    • PROBLEM TO BE SOLVED: To prevent a flow-measuring element of a flow measuring apparatus which is used for measuring an air flow, from damaging due to dust going into an air-intake duct. SOLUTION: A flow-measuring apparatus is equipped with an auxiliary passage 8 arranged inside a main passage through which fluid flows; and a tabular member 5, which has a pattern of a heating resistor on one face side for measuring the air flow and is disposed inside the auxiliary passage. In the tabular member, the face 5a on which the heating resistor pattern is disposed, is arranged along the flow of the fluid in the auxiliary passage. A heating resistor pattern-side fluid passage portion 8a, which is formed so that the fluid flows between the face 5a of the tabular member and a passage-forming surface 8d of the auxiliary passage, and a back-surface side fluid passage portion 8b, between a face 5b on the side opposite to the face 5b of the tabular member and a passage-forming surface 8c of the auxiliary passage, are also configured in the flow-measuring apparatus. Furthermore, a guidance portion 13 is provided on the upstream-side end of the tabular member, in order to guide the dust which collides against the end, to the back-surface side fluid passage portion 8b side. COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:为了防止用于测量空气流量的流量测量装置的流量测量元件由于灰尘进入进气管而受到破坏。 解决方案:流量测量装置具有布置在流体流过的主通道内的辅助通道8; 以及板状构件5,其在一个面侧具有用于测量空气流的加热电阻器的图案,并且设置在辅助通道内。 在片状构件中,沿着辅助通道中的流体流布置布置有加热电阻器图案的面5a。 形成为使得流体在平板状构件的表面5a和辅助通道的通道形成表面8d之间流动的加热电阻器图案侧流体通道部分8a和背面侧流体通道部分8b, 在流量测量装置中还配置有与台状部件的表面5b相反的一侧的表面5b和辅助通道的通道形成表面8c之间。 此外,为了将与端部碰撞的尘埃引导到背面侧流体通道部分8b侧,在该板状构件的上游侧端部设置有引导部13。 版权所有(C)2009,JPO&INPIT
    • 10. 发明专利
    • Multiple transmission system
    • 多传输系统
    • JP2007221251A
    • 2007-08-30
    • JP2006036939
    • 2006-02-14
    • Hitachi LtdKyushu Electric Power Co Inc九州電力株式会社株式会社日立製作所
    • ICHINOSE YUJISAITO SUNAOKOMI YUTAKAFUJITA HIROBUMIMIZOGAMI HIRONORI
    • H04J1/00H04J11/00
    • PROBLEM TO BE SOLVED: To provide a multiple transmission system capable of monitoring a deterioration state of devices of distribution powers and switches by utilizing communication cables installed at present and utilized for communication. SOLUTION: In two pairs of communication cables, an FSK transmitter 4a transmits a low frequency signal for communication using a low frequency band to an FSK receiver 5b through a first pair communication cable 6a in one direction, and an FSK transmitter 4b transmits a low frequency signal to an FSK receiver 5a through a second pair communication cable 6b in the other direction. A high frequency signal with a high frequency band transmitted/received by OFDM transmitters/receivers 10a, 10b, 10c, 10d comprises at least three or more carriers arranged at an equal frequency interval, and data allocated to the carriers are changed depending on a transmission state. The high frequency signal with the high frequency band transmitted/received by the OFDM transmitters/receivers 10a, 10b, 10c, 10d is transmitted through the two pairs of the communication cables 6a, 6b in two ways. The low frequency signal and the high frequency signal are superimposed one on the other. COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:提供一种能够通过利用当前安装并用于通信的通信电缆来监视配电功率和开关的装置的劣化状态的多传输系统。 解决方案:在两对通信电缆中,FSK发射机4a通过第一对通信电缆6a在一个方向上向FSK接收机5b发送用于使用低频带通信的低频信号,并且FSK发射机4b发送 通过另一方向上的第二对通信电缆6b向FSK接收机5a发送低频信号。 由OFDM发射机/接收机10a,10b,10c,10d发送/接收的具有高频带的高频信号包括以等频间隔布置的至少三个或更多个载波,并且分配给载波的数据根据​​传输而改变 州。 具有由OFDM发射机/接收机10a,10b,10c,10d发送/接收的高频带的高频信号通过两对通信电缆6a,6b以两种方式传输。 低频信号和高频信号彼此叠加。 版权所有(C)2007,JPO&INPIT