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    • 51. 发明专利
    • Radio communication device, radio communication system, and radio communication control method
    • 无线电通信设备,无线电通信系统和无线电通信控制方法
    • JP2013150049A
    • 2013-08-01
    • JP2012006997
    • 2012-01-17
    • Hitachi Ltd株式会社日立製作所
    • MURATA SHINJIICHINOSE YUJIARITA SETSUOKATADA ISAOYOSHINAGA TAKASHI
    • H04W24/08H04B1/40H04W24/10H04W72/08
    • PROBLEM TO BE SOLVED: To provide a technique that does not cause delay in data communication by temporarily interrupting data communication, maintains realtime control, and can secure reliability of a device.SOLUTION: A master station side radio communication device comprises: radio transmission/reception means 205, 204a for communicating with another radio communication device by means of a first transmission/reception unit; measuring means 211 for measuring information on the communication state of a current communication channel at the first transmission/reception unit; radio wave state monitoring means 208 for measuring information on the radio wave state of an extrinsic radio wave received by a second reception unit; reserved communication channel determination means 210 for determining a reserved communication channel which is a candidate for change; and communication channel control means 213 for determining whether the communication channel should be changed from the current communication channel to the reserved communication channel.
    • 要解决的问题:提供一种通过暂时中断数据通信不会导致数据通信延迟的技术,维护实时控制,并且可以确保设备的可靠性。解决方案:主站侧无线电通信设备包括:无线电发送/接收 装置205,204a,用于通过第一发送/接收单元与另一个无线电通信装置进行通信; 用于测量关于第一发送/接收单元当前通信信道的通信状态的信息的测量装置211; 无线电波状态监视装置208,用于测量由第二接收单元接收的外来无线电波的无线电波状态的信息; 保留通信信道确定装置210,用于确定作为改变的候选者的保留通信信道; 以及用于确定通信信道是否应当从当前通信信道改变为预留通信信道的通信信道控制装置213。
    • 52. 发明专利
    • Reactor water level gauge
    • 反应器水位计
    • JP2013124883A
    • 2013-06-24
    • JP2011272610
    • 2011-12-13
    • Hitachi Ltd株式会社日立製作所
    • FUSHIMI ATSUSHIARITA SETSUOKANEDA MASAKI
    • G21C17/10G01F23/22
    • PROBLEM TO BE SOLVED: To provide a reactor water level gauge for directly measuring a water level in a lower part of a core inside of the core without adding a through hole to a reactor bottom part of a reactor pressure container.SOLUTION: A reactor water level gauge for measuring a water level of cooling water inside of a pressure container 1 of a boiling-water reactor comprises a reactor inside instrument housing 9 which is fixed through a container wall surface to a bottom part of the pressure container, a neutron detection pipeline 11 inserted to the reactor inside instrument housing, a plurality of cooling water detectors 14 disposed at a plurality of height positions inside of the neutron detection pipeline and lower than a lower end of a core, and cooling water through holes 18, 19 provided in both the reactor inside instrument housing 9 and the neutron detection pipeline 11 at positions lower than the plurality of height positions where the cooling water detectors are disposed. The plurality of cooling water detectors are fixed at a plurality of height positions of a metal coating cable 15.
    • 要解决的问题:提供一种反应器水位计,用于直接测量核心内部的芯的下部的水位,而不向反应堆压力容器的反应器底部添加通孔。 解决方案:用于测量沸水反应堆的压力容器1内的冷却水的水位的反应器水位计包括仪器壳体9内部的反应器,其通过容器壁表面固定到底部 压力容器,插入到仪器壳体内的反应器内的中子检测管道11,设置在中子检测管线内部的多个高度位置并低于芯的下端的多个冷却水检测器14,以及冷却水 在设置有冷却水检测器的多个高度位置的位置以下的位于仪器壳体9内的反应器和中子检测管路11中的通孔18,19。 多个冷却水检测器固定在金属涂覆电缆15的多个高度位置。版权所有(C)2013,JPO&INPIT
    • 53. 发明专利
    • Plant equipment state management method and plant equipment state management system
    • 工厂设备状态管理方法和工厂设备状态管理系统
    • JP2013077128A
    • 2013-04-25
    • JP2011216172
    • 2011-09-30
    • Hitachi Ltd株式会社日立製作所Hitachi-Ge Nuclear Energy Ltd日立Geニュークリア・エナジー株式会社
    • ARITA SETSUOHARADA HIDEOAKUTSU YOSHIOFUSHIMI ATSUSHI
    • G05B23/02
    • PROBLEM TO BE SOLVED: To provide a plant equipment state management method for improving the accuracy of information showing the opening/closing state of a manual valve installed in a plant.SOLUTION: In a plant equipment state management method, operation instruction information read from a plant equipment state management device 9 is input to a portable terminal 16, and displayed at the portable terminal 16. A manual valve 17 whose opening/closing state should be checked is confirmed by an operator. The equipment ID information of the manual valve 17 is read from an RFID tag 18 of the manual valve 17 by the portable terminal 16. When the manual valve 17 is a manual valve to be operated, the manual valve 17 is put in a predetermined full closing state by the operator, and information showing the full closing state is input to the portable terminal 16. When the operation result of the manual valve 17 is coincident with the operation instruction content, information showing the operation result is transmitted to the plant equipment state management device 9. The display information of piping instrumentation diagram information to which the information showing the operation result has been added is created and displayed by the plant equipment state management device 9.
    • 要解决的问题:提供一种用于提高显示安装在设备中的手动阀的打开/关闭状态的信息的精度的设备状态管理方法。 解决方案:在工厂设备状态管理方法中,从工厂设备状态管理装置9读取的操作指令信息被输入到便携式终端16,并在便携式终端16处显示。手动阀17的打开/关闭状态 应由运营商确认。 通过便携式终端16从手动阀17的RFID标签18读取手动阀17的设备ID信息。当手动阀17是要操作的手动阀17时,将手动阀17置于预定的充满状态 关闭状态,将完全关闭状态的信息输入到便携式终端16.当手动阀17的运转结果与运转指示内容一致时,表示运转结果的信息被传送到工厂设备状态 管理装置9.由工厂设备状态管理装置9创建并显示附加有显示操作结果的信息的管道仪器图信息的显示信息。(C)2013,JPO&INPIT
    • 54. 发明专利
    • Radio communication device, radio communication system, and communication control method
    • 无线电通信设备,无线电通信系统和通信控制方法
    • JP2012235372A
    • 2012-11-29
    • JP2011103424
    • 2011-05-06
    • Hitachi Ltd株式会社日立製作所
    • MURATA SHINJIICHINOSE YUJIARITA SETSUOMASUKO HIDEAKI
    • H04W52/20H04W28/18H04W52/24
    • Y02B60/50
    • PROBLEM TO BE SOLVED: To select an optimal setting determining the cause of a communication error in a radio communication system in which a suitable setting is selected from plural levels of transmission power and plural modulation schemes.SOLUTION: A radio communication device comprises: a communication error cause estimation unit which determines cause of a communication error from a reception power intensity of the next data communication when the communication error has occurred; means which determines that there is a high possibility of a communication error caused by insufficient reception power if the reception signal intensity is smaller than a preset threshold at which data can be received without an error, and determines that there is a high possibility of an error caused by radio wave interference if the reception signal intensity is larger than the threshold; an interference suppression-type transmission power control unit which decreases transmission power when communication is successful for a preset number of consecutive times; and means which increases transmission power if the communication error cause estimation unit has determined that there is a high possibility of a communication error caused by insufficient reception power, and maintains or decreases transmission power if the communication error cause estimation unit has determined that there is a high possibility of an error caused by radio wave interference.
    • 要解决的问题:选择确定在多个发送功率和多个调制方案中选择适当设置的无线电通信系统中的通信错误的原因的最佳设置。 解决方案:无线电通信装置包括:通信错误原因估计单元,当发生通信错误时,确定来自下一个数据通信的接收功率强度的通信错误的原因; 如果接收信号强度小于可以无错误地接收数据的预设阈值,则确定由于接收功率不足引起的通信错误的可能性高的装置,并且确定存在错误的可能性高 如果接收信号强度大于阈值,则由无线电波干扰引起; 干扰抑制型发送功率控制单元,其在连续预定次数的通信成功时降低发送功率; 以及如果通信错误原因估计单元已经确定由于接收功率不足引起的通信错误的可能性很高的情况下增加发送功率的装置,并且如果通信错误原因估计单元已经确定存在 无线电波干扰引起的错误的可能性很高。 版权所有(C)2013,JPO&INPIT
    • 55. 发明专利
    • Radio communication system, master station radio communication device, slave station radio communication device, and communication method
    • 无线电通信系统,主站无线电通信设备,从站无线电通信设备和通信方法
    • JP2012065172A
    • 2012-03-29
    • JP2010208154
    • 2010-09-16
    • Hitachi Ltd株式会社日立製作所
    • MURATA SHINJIICHINOSE YUJIARITA SETSUOKATADA ISAOMASUKO HIDEAKI
    • H04W74/08
    • PROBLEM TO BE SOLVED: To provide media access control for shortening a delay time in a radio communications system in which a master station and a slave station communicate with each other.SOLUTION: A slave station radio communication device transmits a polling request to a master station radio communication device, and transmits a data frame when polling corresponding to the polling request is received from the master station radio communication device. When receiving the polling request from the one slave station radio communication device, the master station radio communication device registers the slave station radio communication device on a polling list as a target slave station radio communication device, and shifts a communication state to a contention period after transmitting the polling of the prescribed number of times to the target slave station radio communication device or after transmitting the polling to the target slave station radio communication device until the target slave station radio communication device is not registered in the polling list.
    • 要解决的问题:提供用于缩短主站和从站彼此通信的无线电通信系统中的延迟时间的媒体访问控制。 解决方案:从站无线电通信设备向主站无线电通信设备发送轮询请求,并且当从主站无线电通信设备接收到对轮询请求进行轮询时,发送数据帧。 当从一个从站无线电通信设备接收到轮询请求时,主站无线电通信设备将作为目标从站无线电通信设备的轮询列表上的从站无线电通信设备注册,并且将通信状态转移到竞争周期之后 将目标从站无线电通信装置的轮询发送到目标从站无线电通信装置,或者在向目标从属无线电通信装置发送轮询之后,直到目标从站无线电通信装置未在轮询列表中注册。 版权所有(C)2012,JPO&INPIT
    • 56. 发明专利
    • Escalator monitoring device, system, and method
    • ESCALATOR监控设备,系统和方法
    • JP2011026071A
    • 2011-02-10
    • JP2009173893
    • 2009-07-27
    • Hitachi Ltd株式会社日立製作所
    • ARITA SETSUOSATO HIROAKITOKUNAGA MOTOKATSU
    • B66B27/00
    • PROBLEM TO BE SOLVED: To provide an escalator monitoring device for reducing the frequency of using a PHS network while reducing manhours and expenses for placing cables via which data is communicated from a control device to PHS terminals.
      SOLUTION: The escalator monitoring device includes ascending and descending escalators 1, 2, 3 and 21, 22, 23 having slave station communication devices for communicating data from the escalator control device through an information transfer line via communication cables 9, 27 placed in trusses 1a-3a and 21a-23a, radio communication devices 30, 31 connecting the ascending and descending escalator groups to each other, the slave station communication devices for the ascending and descending escalators, and a master station communication device 5 installed on selective one of the escalators connected to the communication cables 9, 27 and the radio communication devices, wherein a PHS terminal device 4 is provided for transmitting communication signals communicated from the slave station communication devices to the master station communication device 5, to the PHS network 10.
      COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:提供一种降低PHS网络使用频率的自动扶梯监控装置,同时减少从控制装置向PHS终端传送数据的电缆的工时和费用。 解决方案:自动扶梯监控装置包括升降自动扶梯1,2,3和21,22,23,其具有用于经由通信电缆9,27通过信息传输线路从自动扶梯控制装置传送数据的从站通信装置 在桁架1a-3a和21a-23a中,连接上升和下降自动扶梯组的无线电通信装置30,31,用于升降自动扶梯的从站通信装置和安装在选择一个上的主站通信装置5 连接到通信电缆9,27的自动扶梯和无线电通信设备,其中提供PHS终端设备4用于将从从站通信设备传送的通信信号发送到主站通信设备5到PHS网络10。 版权所有(C)2011,JPO&INPIT
    • 57. 发明专利
    • Wireless communication apparatus, wireless communication method, and wireless communication program
    • 无线通信设备,无线通信方法和无线通信程序
    • JP2011024153A
    • 2011-02-03
    • JP2009169683
    • 2009-07-21
    • Hitachi Ltd株式会社日立製作所
    • MURATA SHINJIICHINOSE YUJIARITA SETSUOSAITO SUNAO
    • H04W28/18
    • PROBLEM TO BE SOLVED: To shorten the maximum transfer delay time of a wireless communication system under a wireless communication environment. SOLUTION: A transmission apparatus of a wireless communication apparatus 101 adds an amount of margin decided from a usage rate of a communication channel measured by a communication channel usage rate measuring unit 105 to a basic value decided based on transmission path characteristics detected by a transmission path characteristics detection unit 104 when transmitting data. The amount of margin decided from the length of data stored in a transmission QUEUE unit 102 is further added, and a modulation method is selected by comparing the results with a previously stored reference value in a modulation method selecting unit 103, then data to be transmitted is modulated by the modulation method selected in a modulating unit 106, then a modulated signal subjected to addition of information of the selected modulation method to the modulated data is subjected to radio transmission. A reception device of the wireless communication apparatus 101 receives the modulated signal subjected to radio transmission, then demodulates the data based on the information of the modulation method stored in the receiving signal in a demodulating unit 110. COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:缩短无线通信系统在无线通信环境下的最大传输延迟时间。 解决方案:无线通信装置101的发送装置将从由通信信道使用率测量单元105测量的通信信道的使用率确定的余量量加到基于由 传输路径特性检测单元104发送数据时。 进一步添加从存储在传输QUEUE单元102中的数据的长度确定的余量,并且通过将结果与调制方法选择单元103中的先前存储的参考值进行比较来选择调制方法,然后将待发送的数据 由调制单元106中选择的调制方式进行调制,然后对所调制的数据进行所选调制方式信息的调制信号进行无线发送。 无线通信装置101的接收装置接收经过无线传输的调制信号,然后根据存储在接收信号中的调制方式的信息在解调单元110中对数据进行解调。版权所有(C)2011 ,JPO&INPIT
    • 58. 发明专利
    • Control board
    • 控制板
    • JP2010262480A
    • 2010-11-18
    • JP2009112802
    • 2009-05-07
    • Hitachi Ltd株式会社日立製作所
    • MICHIGUCHI YOSHIHIROARITA SETSUOAMANUMA TAKEHIRO
    • G05B9/02
    • PROBLEM TO BE SOLVED: To solve a critical problem that the operation stop of a plant due to the malfunction of a control board occurs since the influence of an external noise intruding from an input/output signal line or a power source supply line is increased during voltage reduction or size reduction in the control board of an industrial plant.
      SOLUTION: A noise detection arithmetic unit 10 and a control board controller 20 are added to a control board, and the noise of an input/output signal line or a power source line is detected, and the arithmetic operation of a plurality of signals is performed, and an external noise is determined. When the malfunction of a control board processor 4 occurs due to the external noise, and the control board stops, the control board controller 20 restarts the control board processor 4, and restores the control board based on the prescribed program of the control board controller 20 while grasping the noise determination result of the noise detection arithmetic device 10 and the state of the control board processor 4.
      COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:为了解决由于控制板的故障导致的工厂的运行停止发生的关键问题,因为从输入/输出信号线或电源供应线入侵的外部噪声的影响 在工业设备的控制板的电压降低或尺寸减小期间增加。 解决方案:噪声检测算术单元10和控制板控制器20被添加到控制板,并且检测输入/输出信号线或电源线的噪声,并且多个 执行信号,并确定外部噪声。 当由于外部噪声而发生控制板处理器4的故障并且控制板停止时,控制板控制器20重启控制板处理器4,并且基于控制板控制器20的规定程序来恢复控制板 同时掌握噪声检测运算装置10的噪声判定结果和控制板处理器4的状态。版权所有(C)2011,JPO&INPIT
    • 59. 发明专利
    • Wireless communication device and wireless communication method
    • 无线通信设备和无线通信方法
    • JP2010233131A
    • 2010-10-14
    • JP2009080795
    • 2009-03-30
    • Hitachi Ltd株式会社日立製作所
    • SAITO SUNAOARITA SETSUOICHINOSE YUJIMURATA SHINJI
    • H04W72/04H04J1/00H04W72/08H04W84/12
    • PROBLEM TO BE SOLVED: To provide a wireless communication device and a wireless communication method for suppressing reduction in throughput by reducing communication error rate on a wireless communication path provided between wireless communication devices. SOLUTION: The wireless communication device (e.g., a gateway station 1) measures communication error rate on a wireless communication path (20a) between the device (the gateway station 1) and another wireless communication device (e.g., a relay station 2A). When the measured communication error rate exceeds a predetermined threshold, the wireless communication device (the gateway station 1) selects a new frequency channel which is set and changed on the wireless communication path (20a). Thereafter, the wireless communication device (the gateway station 1) transmits information about the new frequency channel via a wireless communication path (20b, 20d) different from the wireless communication path (20a) to another wireless communication device (the relay station 2A), and sets and changes the frequency channel of the wireless communication path (20a) to a new frequency channel. COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:提供一种无线通信装置和无线通信方法,用于通过减少在无线通信装置之间提供的无线通信路径上的通信错误率来抑制吞吐量的降低。 解决方案:无线通信设备(例如,网关站1)测量设备(网关站1)和另一无线通信设备(例如,中继站2A)之间的无线通信路径(20a)上的通信错误率 )。 当所测量的通信错误率超过预定阈值时,无线通信设备(网关站1)选择在无线通信路径(20a)上设置和改变的新频道。 此后,无线通信装置(网关站1)经由与无线通信路径(20a)不同的无线通信路径(20b,20d)向另一无线通信装置(中继站2A)发送关于新频道的信息, 并将无线通信路径(20a)的频道设定并变更为新的频道。 版权所有(C)2011,JPO&INPIT
    • 60. 发明专利
    • Man conveyor monitoring device and man conveyor monitoring system
    • MAN输送机监控装置和人输送机监控系统
    • JP2010058932A
    • 2010-03-18
    • JP2008227718
    • 2008-09-05
    • Hitachi Building Systems Co LtdHitachi Ltd株式会社日立ビルシステム株式会社日立製作所
    • ARITA SETSUOTAKITA ISAOSHOJI KUNI
    • B66B27/00
    • PROBLEM TO BE SOLVED: To provide a man conveyor monitoring device and a man conveyor monitoring system capable of reducing a PHS line network use frequency, by reducing cable laying manhours and cost required for communicating data from a man conveyor control device up to a PHS terminal unit.
      SOLUTION: This man conveyor monitoring device has slave station communication devices 6, 7 and 8 for communicating the data from the man conveyor control device arranged with every man conveyor and performing operation control of the man conveyor, via a communication cable 9 laid in a truss of the main conveyor, a master station communication device 5 connected to the communication cable 9 laid in the truss of the man conveyor so as to communicate with the slave station communication devices 6, 7 and 8 of the respective man conveyors, and a PHS terminal unit 4 for receiving a communication signal from a PHS line network 10 by transmitting the communication signal from the respective slave station communication devices 6, 7 and 8 communicated to the master station communication device 5 to the PHS line network 10.
      COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:提供一种能够减少PHS线路网络使用频率的人输送机监控装置和人输送机监控系统,通过减少电缆敷设工作时间和从人输送机控制装置传送数据所需的成本,直到 PHS终端单元。

      解决方案:本人输送机监测装置具有从站通信装置6,7和8,用于与布置在每个人输送机上的人输送机控制装置通信数据,并通过布线的通信电缆9进行人输送机的操作控制 在主输送机的桁架中,连接到布置在人输送机的桁架中的通信电缆9以便与各个人输送机的从站通信设备6,7和8通信的主站通信设备5,以及 PHS终端单元4,用于通过从通信给主站通信设备5的各个从站通信设备6,7和8向PHS线路网络10发送通信信号,从PHS线路网络10接收通信信号。

      版权所有(C)2010,JPO&INPIT