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    • 3. 发明专利
    • Ultrasonic flowmeter
    • 超声波流量计
    • JP2006003310A
    • 2006-01-05
    • JP2004182770
    • 2004-06-21
    • Aichi Tokei Denki Co LtdOsaka Gas Co LtdToho Gas Co LtdTokyo Gas Co LtdToshiba Corp大阪瓦斯株式会社愛知時計電機株式会社東京瓦斯株式会社東邦瓦斯株式会社株式会社東芝
    • FUJIMOTO TATSUOSUZUKI MAMORUYUASA KENICHIROFUJII YASUHIROKIMURA YUKIOHIROYAMA TORUHORI ITSUROKIMURA TATSUYAHASEBE SHINYA
    • G01F1/66
    • PROBLEM TO BE SOLVED: To provide a low-power-consumption ultrasonic flowmeter capable of obtaining a high-accuracy measurement value. SOLUTION: This ultrasonic flowmeter has: a drive part 5 generating an ultrasonic wave; a zero-crossing detection part 7 outputting a zero-cross point of a reception signal of the ultrasonic wave as a reception point signal; a clocking part 8 measuring a propagation time of the ultrasonic wave between a pair of ultrasonic vibrators 2, 3; and an arithmetic part 9 calculating a flow rate in a flow passage on the basis of the measured propagation time. The clocking part 8 has: a counter 15 starting count of a reference clock by transmission of the ultrasonic wave, and stopping the count by the output of the reception point signal; a delay part 13 inputted with the reception point signal; and an encoder 16 recording a signal outputted from each delay element of the delay part in synchronization with the reference clock, and holding time series data in the neighborhood of a change of the reception point signal. The arithmetic part 9 corrects contents of the counter by the time series data recorded in the encoder to calculate the propagation time, and measures the flow rate in the flow passage on the basis thereof. COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:提供一种能够获得高精度测量值的低功耗超声波流量计。 解决方案:该超声波流量计具有:产生超声波的驱动部5; 输出超声波的接收信号的零交叉点作为接收点信号的过零检测部7; 时钟部分8,测量一对超声波振动器2,3之间的超声波的传播时间; 以及运算部9,其基于测定的传播时间计算流路中的流量。 时钟部分8具有:计数器15通过发送超声波开始参考时钟的计数,并通过接收点信号的输出停止计数; 输入了接收点信号的延迟部13; 以及编码器16,其与参考时钟同步地记录从延迟部分的每个延迟元件输出的信号,并且在接收点信号的改变附近保持时间序列数据。 算术部分9通过记录在编码器中的时间序列数据来校正计数器的内容以计算传播时间,并且基于此来测量流道中的流量。 版权所有(C)2006,JPO&NCIPI
    • 5. 发明专利
    • Ultrasonic flowmeter
    • 超声波流量计
    • JP2006275814A
    • 2006-10-12
    • JP2005096260
    • 2005-03-29
    • Aichi Tokei Denki Co LtdOsaka Gas Co LtdToho Gas Co LtdTokyo Gas Co LtdToshiba Corp大阪瓦斯株式会社愛知時計電機株式会社東京瓦斯株式会社東邦瓦斯株式会社株式会社東芝
    • FUJIMOTO TATSUOSUZUKI MAMORUYUASA KENICHIROFUJII YASUHIROKIMURA YUKIOHIROYAMA TORUHORI ITSUROTAKAHASHI YUKIOSAMEDA YOSHITOMIKIMURA TATSUYAHASEBE SHINYA
    • G01F1/66
    • PROBLEM TO BE SOLVED: To achieve high measurement accuracy without being affected by characteristics changes of an ultrasonic oscillator and a difference in propagation time caused by a difference in the characteristics between ultrasonic oscillators placed upstream and downstream.
      SOLUTION: The ultrasonic flowmeter comprises a transmission circuit 104 for generating a driving pulse signal, a first ultrasonic oscillator 101 which is placed in a channel 100 and generates an ultrasonic wave in response to the driving pulse signal from the transmission circuit, a second ultrasonic oscillator 102 which is placed facing the first ultrasonic oscillator with a predetermined distance therefrom in the channel, receives the ultrasonic wave generated by the first ultrasonic oscillator, and outputs as a reception signal, a level detection circuit 107 for detecting the level of the reception signal output from the second ultrasonic oscillator, correction means 108 to 110, 112 for collecting the level of the reception signal on the basis of the detected level of the reception signal, and a flow measurement circuit 114 which measures the propagation time of the ultrasonic wave from the first ultrasonic oscillator to the second ultrasonic oscillator on the basis of the corrected reception signal and measures the flow of a fluid flowing through the channel on the basis of the measured propagation time.
      COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:为了实现高测量精度而不受超声波振荡器的特性变化的影响,以及由放置在上游和下游的超声波振荡器之间的特性差引起的传播时间差。 解决方案:超声波流量计包括用于产生驱动脉冲信号的传输电路104,响应于来自传输电路的驱动脉冲信号而放置在通道100中并产生超声波的第一超声波振荡器101, 第二超声波振荡器102在通道中与预定距离相对置的第一超声波振荡器放置,接收由第一超声波振荡器产生的超声波,作为接收信号输出电平检测电路107, 从第二超声波振荡器输出的接收信号,基于接收信号的检测电平来收集接收信号的电平的校正单元108〜110,112,以及测量超声波的传播时间的流量测量电路114 基于校正值从第一超声波振荡器到第二超声波振荡器 基于所测量的传播时间测量流过通道的流体的流量。 版权所有(C)2007,JPO&INPIT
    • 6. 发明专利
    • Ultrasonic flowmeter
    • 超声波流量计
    • JP2006292381A
    • 2006-10-26
    • JP2005109166
    • 2005-04-05
    • Aichi Tokei Denki Co LtdOsaka Gas Co LtdToho Gas Co LtdTokyo Gas Co LtdToshiba Corp大阪瓦斯株式会社愛知時計電機株式会社東京瓦斯株式会社東邦瓦斯株式会社株式会社東芝
    • FUJIMOTO TATSUOSUZUKI MAMORUYUASA KENICHIROFUJII YASUHIROKIMURA YUKIOHIROYAMA TORUGOMYO TOMOOSAMEDA YOSHITOMITAKAHASHI YUKIOKIMURA TATSUYAHASEBE SHINYA
    • G01F1/66H04R17/00
    • PROBLEM TO BE SOLVED: To provide an ultrasonic flowmeter capable of improving measurement accuracy of a flow rate by preventing superimposition of an unnecessary reflected wave on an ultrasonic wave propagating in a measuring passage.
      SOLUTION: This flowmeter is equipped with a measuring passage 10 wherein a fluid to be measured flows; a measuring pipe 13 provided in the measuring passage, for allowing the fluid to be measured to pass; a first ultrasonic transducer 14 arranged on the wall surface of the measuring passage opposite to one open end of the measuring pipe; a second ultrasonic transducer 15 arranged oppositely to the first ultrasonic transducer on the wall surface of the measuring passage opposite to the other open end of the measuring pipe; a sound absorbing material 16 arranged on the wall surface of the measuring passage around the first ultrasonic transducer and around the second ultrasonic transducer, for attenuating reflection of the ultrasonic wave emitted from the first ultrasonic transducer or the second ultrasonic transducer; and a control circuit 17 for calculating the flow rate of the fluid to be measured flowing in the measuring passage based on a propagation time of the ultrasonic wave transmitted/received between the first ultrasonic transducer and the second ultrasonic transducer.
      COPYRIGHT: (C)2007,JPO&INPIT
    • 解决的问题:提供一种能够通过防止在测量通道中传播的超声波上的不必要的反射波的叠加而提高流量的测量精度的超声波流量计。

      解决方案:该流量计配备有测量流路10,其中待测流体流动; 设置在测量通道中的测量管13,用于允许流体被测量通过; 布置在所述测量通道的与所述测量管的一个开口端相对的壁表面上的第一超声换能器14; 第二超声换能器15,其与所述测量管道的与所述测量管的另一开口端相反的壁表面上与所述第一超声换能器相对地布置; 布置在第一超声换能器周围的测量通道的壁表面上并围绕第二超声换能器的吸声材料16,用于衰减从第一超声换能器或第二超声换能器发射的超声波的反射; 以及控制电路17,用于根据在第一超声换能器和第二超声换能器之间发送/接收的超声波的传播时间,计算在测量通道中流动的被测流体的流量。 版权所有(C)2007,JPO&INPIT

    • 7. 发明专利
    • Device, system and method for power line carrier communication
    • 用于电力线载波通信的装置,系统和方法
    • JP2014138370A
    • 2014-07-28
    • JP2013007274
    • 2013-01-18
    • Toshiba Corp株式会社東芝
    • MATSUI TERUHISAKIMURA TATSUYATAKAHASHI YUKIOFUWA YUTAKA
    • H04B3/54H04L12/28
    • PROBLEM TO BE SOLVED: To provide a power line carrier communication device, a power line carrier communication system and a power line carrier communication method, capable of reducing a delay time caused by carrier sensing.SOLUTION: A power line carrier communication device 10 communicates with another power line carrier communication device using a pair of power lines 6, and includes a signal receiver unit 3, a signal transmitter unit 4, a control unit 1 and a filter unit 2. The filter unit 2 includes a switch unit for electrically conducting to one of the power lines 6, when the signal receiver unit 3 is operated and controlled by the control unit 1. The control unit 1 includes: a switch-control-signal generator unit for generating a signal to control the switch unit; a frequency characteristic preservation unit for preserving the frequency characteristic of power information varied by the control signal; and a frequency characteristic comparison unit for comparing the noise frequency characteristic of the power line 6 acquired by the signal receiver unit 3 with a noise frequency characteristic preserved in the frequency characteristic preservation unit.
    • 要解决的问题:提供能够减少由载波感测引起的延迟时间的电力线载波通信装置,电力线载波通信系统和电力线载波通信方法。解决方案:电力线载波通信装置10与 使用一对电力线6的另一个电力线载波通信装置,并且包括信号接收单元3,信号发送单元4,控制单元1和滤波单元2.滤波单元2包括用于导电 电源线6之一,当信号接收单元3由控制单元1操作和控制时。控制单元1包括:开关控制信号发生器单元,用于产生控制开关单元的信号; 频率特性保存单元,用于保存由控制信号变化的功率信息的频率特性; 以及频率特性比较单元,用于将由信号接收器单元3获取的电力线6的噪声频率特性与保存在频率特性保存单元中的噪声频率特性进行比较。
    • 8. 发明专利
    • Power line carrier communication system, and communication method
    • 电力线载波通信系统和通信方法
    • JP2013172429A
    • 2013-09-02
    • JP2012036848
    • 2012-02-22
    • Toshiba Corp株式会社東芝
    • MATSUI TERUHISAOSAKI YOSHIAKITAKAHASHI YUKIOKIMURA TATSUYANAKANO KENJI
    • H04B3/54
    • PROBLEM TO BE SOLVED: To provide a power line carrier communication system and communication method using the system which can reduce transmission of unnecessary route control information and suppress reduction in transmission speed.SOLUTION: A power line carrier communication system 1 comprises a plurality of power line carrier communication devices 20a to 20d installed at predetermined spots on a power line 10, where the power line carrier communication devices 20a to 20c are connected to power information measurement devices 30a to 30c for measuring power information on power apparatuses 40a to 40c installed on each home, respectively. The power line carrier communication device 20a comprises: a data reception unit for receiving power information from the other power line carrier communication devices 20b to 20d; a power information acquisition unit which is connected to the power information measurement device 30a and receives power information on the power apparatus 40a; a transfer target selection unit for selecting any of the other power line carrier communication devices 20b to 20d to which transfer should be performed; and a data transmission unit for transmitting the power information to the selected device of the other power line carrier communication devices 20b to 20d.
    • 要解决的问题:提供一种使用该系统的电力线载波通信系统和通信方法,其可以减少不必要的路由控制信息的传输并抑制传输速度的降低。解决方案:电力线载波通信系统1包括多个电力线 将电力线载波通信装置20a〜20c连接到功率信息测量装置30a〜30c的电力线路10上的预定点处的载波通信装置20a〜20d,用于测量安装在每个家庭的电力设备40a〜40c上的电力信息 , 分别。 电力线载波通信装置20a包括:数据接收单元,用于从其他电力线载波通信装置20b至20d接收电力信息; 电力信息获取单元,连接到电力信息测量装置30a,并接收电力设备40a上的电力信息; 转移目标选择单元,用于选择应执行转移的其它电力线载波通信装置20b至20d中的任何一个; 以及数据发送单元,用于将功率信息发送到其他电力线载波通信设备20b至20d的所选择的设备。
    • 9. 发明专利
    • Insulation diagnosis apparatus
    • 绝缘诊断装置
    • JP2013113691A
    • 2013-06-10
    • JP2011259637
    • 2011-11-28
    • Toshiba Corp株式会社東芝
    • SATO JUNICHIKIMURA TATSUYATAKAHASHI MASAOTAGAYA OSAMU
    • G01R31/12H02B13/02H02B13/065
    • PROBLEM TO BE SOLVED: To provide an insulation diagnosis apparatus in which partial discharge occurring from a solid insulation device can be detected with high sensitivity.SOLUTION: In an insulation diagnosis apparatus, partial discharge of a solid insulation device provided with a ground layer in its outer periphery is detected. In the insulation diagnosis apparatus, a surface potential is detected by a plurality of detection electrodes in contact with a surface of the ground layer. A differential section is disposed in proximity with the detection electrodes and calculates a potential difference of the surface potentials detected from the detection electrodes. A transmission section transmits a signal outputted from the differential section, and a detection processing section detects partial discharge on the basis of the signal transmitted by the transmission section.
    • 解决的问题:提供一种能够以高灵敏度检测出从固体绝缘装置发生的局部放电的绝缘诊断装置。 解决方案:在绝缘诊断装置中,检测在其外周设置有接地层的固体绝缘装置的局部放电。 在绝缘诊断装置中,通过与接地层的表面接触的多个检测电极来检测表面电位。 差分部分设置在检测电极附近,并计算从检测电极检测的表面电位的电位差。 发送部发送从差分部输出的信号,检测处理部根据由发送部发送的信号来检测局部放电。 版权所有(C)2013,JPO&INPIT
    • 10. 发明专利
    • Optical communication device
    • 光通信设备
    • JP2010064892A
    • 2010-03-25
    • JP2008235585
    • 2008-09-12
    • Toshiba Corp株式会社東芝
    • FUKAI EIGOSAMEDA YOSHITOMIKIMURA TATSUYAMAOKA TADANORI
    • B66B3/00H04B10/11H04B10/114
    • PROBLEM TO BE SOLVED: To simplify the structure of an optical communication device in which at least one of communication objects is a mobile body.
      SOLUTION: The optical communication device 1 includes: a light emitting part 11 which is set in a car 92 and transmits an optical signal LS
      1 ; a light receiving part 31 which receives the optical signal LS
      1 ; a movable mirror 12 which changes the optical axis of the optical signal LS
      1 received with the receiving part 31; and a moving-side control part 14 which includes a mirror control part 25 for controlling the movable mirror 12 based on the elevating speed V of the car 92.
      COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:为了简化其中至少一个通信对象是移动体的光通信设备的结构。 解决方案:光通信设备1包括:发光部分11,其被设置在轿厢92中并发送光信号LS 1 ; 接收光信号LS 1 的光接收部31; 使接收部31接收到的光信号LS 1 的光轴变化的可动镜12; 以及移动侧控制部14,其包括基于轿厢92的升降速度V来控制可动镜12的反射镜控制部25.版权所有(C)2010,JPO&INPIT