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    • 1. 发明专利
    • SURVEY RADAR EQUIPMENT FOR UNDERGROUND BURIED BODY
    • JPS6288981A
    • 1987-04-23
    • JP22877685
    • 1985-10-16
    • TOKYO GAS CO LTDHITACHI LTD
    • OKADA MASUMIHIRAMOTO KAZUOMICHIGUCHI YOSHIHIRONISHI MASATSUGU
    • G01S7/42G01S13/04G01S13/88
    • PURPOSE:To survey the direction of an underground buried body from the relation between the direction of a transmitted electric field and reflected wave intensity by applying two kinds of AC voltages to mutually orthogonal dipole antennas, and varying its amplitude and changing the electromagnetic field direction of a radiant linear polarized wave. CONSTITUTION:Alternating currents 13 and 14 of frequency (f) which are in phase of 180 deg. out of phase with each other are flowed to the two orthogonal half-wave dipole antennas 11 and 12. The amplitudes of the currents 13 and 14 are denoted as I1 and I2. Those antennas 11 and 12 are set so that the plane containing the antennas 11 and 12 is parallel to the ground surface, and a radio wave is radiated into the ground. When the radio wave is radiated from above a buried pipe 7, the electric field E on the ground surface of the buried pipe is almost horizontal. The ratio of the currents I1 and I2 is varied at each point while the antennas 11 and 12 are moved to change the electric field direction of the transmitted ratio wave. The reflected wave intensity in each electric field direction is stored and the buring direction is found automatically from the currents I1 and I2 with which the reflection intensity is maximum, so that the antennas need not be moved over a wide range unlike before.
    • 2. 发明专利
    • APPARATUS FOR SEARCHING EMBEDDED ARTICLE
    • JPS6283681A
    • 1987-04-17
    • JP22506985
    • 1985-10-09
    • TOKYO GAS CO LTDHITACHI LTD
    • OKADA MASUMIMICHIGUCHI YOSHIHIROHIRAMOTO KAZUONISHI MASATSUGU
    • G01S7/28G01S13/88G01V3/12
    • PURPOSE:To enable the common use of transmitting and receiving antennae to a wide frequency band, by changing over transmission and reception by controlling the high-speed switching of an electronic switch by combining delay wires. CONSTITUTION:The pulse signal from a pulse generator passing through the signal-dividing device 31 of a duplexer 3 is applied not only to a delay wire 33 preventing the cutting off a first part but also to a trigger circuit 36. Trans mitting and receiving electronic switch elements 32, 35 are controlled through a gate generation circuit 37 responding to the output of the circuit 36 and, during a transmission period when there is the output of the delay wire 33, the element 32 is turned ON while the element 35 is turned OFF and a pulse signal is transmitted through a delay wire 34 and the input to a receiving circuit through the element 35 is cut off. In the same way, a receiving pulse signal is inputted to the receiving circuit through the element 35 during a receiving period and the input to the delay wire 3 through the element 32 is cut off. By the changing-over of transmission and reception through this high-speed certain electronic switch, the common use of transmitting and receiving antennae is enabled to a wide high-frequency band.
    • 3. 发明专利
    • BURIED BODY SURVEYING DEVICE
    • JPS63159781A
    • 1988-07-02
    • JP30747986
    • 1986-12-23
    • HITACHI LTDTOKYO GAS CO LTD
    • MICHIGUCHI YOSHIHIROHIRAMOTO KAZUONISHI MASATSUGUABE TSUTOMUOKADA MASUMI
    • G01V3/12G01S7/28G01S7/282G01S13/88
    • PURPOSE:To reduce an area where surveying is impossible nearby the ground surface and to increase survey depth by varying the pulse width, i.e. frequency and pulse amplitude of a radio wave oscillated by an oscillator according to observation depth. CONSTITUTION:A transmitting antenna 1 is applied with a pulse signal from the oscillator 5, which is controlled by a control signal generator 6 to vary the amplitude and pulse width of the oscillated pulse signal. A signal received by a receiving antenna 2 is amplified 7 and further sampled by a sampler 8. This sampled signal is led to a video processor 9, where the signal is made into video and displayed 10. Further, the video processor 9 inputs the position of a carriage 3 where the antennas 1 and 2 are mounted from a position detector 11. Then, the amplitude and frequency of the oscillated pulse signal are varied according to the observation depth and the pulse width is made short as the time of an observation nearby the ground surface, so the area where detection is impossible owing to ground surface reflection is reducible. Further, the attenuation of a reflected wave from a deep surveyed target can be decreased, so the survey depth can be increased.
    • 4. 发明专利
    • SURVEYING METHOD FOR UNDERGROUND BURIED BODY
    • JPS63115078A
    • 1988-05-19
    • JP25978686
    • 1986-10-31
    • HITACHI LTDTOKYO GAS CO LTD
    • HIRAMOTO KAZUOMICHIGUCHI YOSHIHIRONISHI MASATSUGUOKADA MASUMI
    • G01S13/88G01S7/42G01V3/12
    • PURPOSE:To survey the position of an underground buried body with high accuracy by radiating a radio wave on the surface of the ground, finding ground surface reflectance with respect to >=2 kinds of frequencies, and finding the radio wave propagation speed in the ground by using the dielectric constant of the ground obtained from the relation between the frequencies and reflectance. CONSTITUTION:A rectangular wave pulse 13 from a rectangular wave oscillator 12 controlled by a controller 14 is radiated by a transmitting antenna 15 at right angles to the ground surface. Part of the radiated radio wave is reflected by the ground surface and the remainder penetrates the ground. A receiving antenna 16, therefore, detects a ground surface reflected wave first and then a reflected wave from the buried body 2. Then the time variation of the received signal found through a sampling circuit 17 is stored 18. Further, the received signal is stored 21 and this signal and the signal stored in a device 18 are used by a computer 20 to finds the reflectance of the ground surface with respect to two preset frequencies. Then, the reflection factors of the ground which are found from the relation between the frequencies and reflectance are used to find the propagation speed of the radio wave in the ground. Then, variation in the reception time of the received signal from the buried body 2 is obtained and aperture synthesis processing 22 is carried out to survey the position of the buried body.
    • 5. 发明专利
    • BURIED MATERIAL SEARCHING DEVICE
    • JPS61264277A
    • 1986-11-22
    • JP10586085
    • 1985-05-20
    • TOKYO GAS CO LTDHITACHI LTD
    • OKADA MASUMIMICHIGUCHI YOSHIHIROHIRAMOTO KAZUONISHI MASATSUGUKOTANI KOICHI
    • G01S13/06G01S13/88G01V3/12
    • PURPOSE:To process only the reflected wave from a buried material to be searched by generating a gate only when the position of a maximum reflected electric wave before and after the change of the polarization direction or the directional pattern of an antenna is within a preliminarily set time range. CONSTITUTION:The transmission wave signal of an oscillator 10 is led to an antenna 13 through a transmission reception switch 12 and is radiated to a buried medium of the buried material to be searched. The reflected wave is received by the antenna 13 and is inputted to a sampling device 17 through the switch 12, an amplifier 14, and a detector 15 and is sampled by each trigger signal from the oscillator 10. The low frequency output signal of the device 17 is stored in waveform memories 18a and 18b. The division between waveforms is performed by a divider 19, and a maximum point of the ratio is detected by a peak detector 20. A peak position signal is led to a gate 22 which generates a gate signal having a certain width with the peak position as the center, and a reflected component included in the gate signal passes through, and only the reflected wave from the buried material from the gate 22 is processed by a video device 23.
    • 6. 发明专利
    • Charged particle beam irradiation system
    • 充电颗粒光束辐射系统
    • JP2012254146A
    • 2012-12-27
    • JP2011128224
    • 2011-06-08
    • Hitachi Ltd株式会社日立製作所Hokkaido Univ国立大学法人北海道大学
    • FUJII YUSUKEHIRAMOTO KAZUONAGAMINE YOSHIHIKOSHIRATO HIROKIISHIKAWA MASAZUMIUMEGAKI KIKUO
    • A61N5/10G01T1/161
    • PROBLEM TO BE SOLVED: To obtain an accurate PET image in a spot scanning type charged particle beam irradiation system.SOLUTION: A PET control part 49 receives an emission stop signal from an irradiation device control part 48, and starts PET measurement after the lapse of a preset fixed time (S109). When spot irradiation for a spot number j is completed, a spot position corresponding to the spot number j +1 (S111→103) is selected. For the next spot irradiation, the irradiation device control part 48 transmits an emission start signal, and the PET control part 49 stops the PET measurement when receives the emission start signal (S105). In other words, the PET measurement is performed while the emission is stopped. A PET signal obtained in the PET measurement is recorded in a memory in the PET control part 49 as PET data just before the spot irradiation for the spot number j +1. A PET image obtaining function 49a obtains the distribution of positron emitters (the PET image) from the recorded PET data.
    • 要解决的问题:在点扫描型带电粒子束照射系统中获得精确的PET图像。 PET控制部49从照射装置控制部48接收发光停止信号,经过预定的固定时间后开始PET测定(S109)。 当点号j的点照射完成时,选择与点号j + 1(S111→103)相对应的光点位置。 对于下一个点照射,照射装置控制部分48发送发射开始信号,并且PET控制部分49在接收到发射开始信号时停止PET测量(S105)。 换句话说,在发射停止时进行PET测量。 在PET测量中获得的PET信号作为PET数据被记录在PET控制部分49的存储器中,作为点号j +的点照射之前的PET数据。 PET图像获取功能49a从记录的PET数据中获得正电子发射器(PET图像)的分布。 版权所有(C)2013,JPO&INPIT
    • 7. 发明专利
    • Charged particle irradiation system and irradiation planning device
    • 充电粒子辐射系统和辐射规划设备
    • JP2010253250A
    • 2010-11-11
    • JP2010035546
    • 2010-02-22
    • Hitachi Ltd株式会社日立製作所
    • FUJII YUSUKEHIRAMOTO KAZUONAGAMINE YOSHIHIKO
    • A61N5/10G21K3/00G21K5/04H05H13/00H05H13/04
    • A61N5/1049A61N5/1037A61N5/1044A61N5/1064A61N2005/1087A61N2005/1095
    • PROBLEM TO BE SOLVED: To provide a means for irradiating a moving irradiation object with beam scanning and energy stacking to form uniform dose distribution in a charged particle irradiation system. SOLUTION: The charged particle irradiation system includes: a charged particle beam generator 1 setting a target beam current value to emit ion beams; an irradiation device 21 having scanning electromagnets 23, 24 and an energy filter 26 and emitting ion beams; and a monitoring device 66 measuring the position of the irradiation object and outputting signals that vary with time according to the displacement of the irradiation object. The emission timing of ion beams is determined based on the signals output from the monitoring device, and the energy of the ion beams is sequentially changed to perform repainting irradiation with each energy. COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:提供一种用于用束扫描和能量堆叠照射移动的照射物体以在带电粒子照射系统中形成均匀的剂量分布的装置。 带电粒子照射系统包括:带电粒子束发生器1,设定目标射束电流值以发射离子束; 具有扫描电磁体23,24和能量过滤器26并且发射离子束的照射装置21; 以及测量照射物体的位置并根据照射物体的位移输出随时间变化的信号的监视装置66。 基于从监视装置输出的信号确定离子束的发射定时,依次改变离子束的能量,进行各能量的再次照射。 版权所有(C)2011,JPO&INPIT
    • 8. 发明专利
    • Charged particle beam irradiation system and charged particle beam emission method
    • 充电颗粒光束辐射系统和充电颗粒射束辐射方法
    • JP2010011962A
    • 2010-01-21
    • JP2008173451
    • 2008-07-02
    • Hitachi Ltd株式会社日立製作所
    • NISHIUCHI HIDEAKISAITO KAZUYOSHITADOKORO MASAHIROAKIYAMA HIROSHIHIRAMOTO KAZUO
    • A61N5/10G21K1/093G21K3/00G21K5/00G21K5/04H05H13/04
    • A61N5/10A61N2005/1087H05H7/10H05H13/04
    • PROBLEM TO BE SOLVED: To provide a charged particle beam irradiation system and a charged particle beam emission method for efficiently emitting and using accumulated beam in a synchrotron and supporting the flatness of an amount of irradiated beam. SOLUTION: The charged particle beam irradiation system includes: a measurement means 15 for measuring an accumulated beam charge amount Qm0 of the ion beams orbiting in the synchrotron 13 for thirteen times immediately before an emission control period in an operating cycle of the synchrotron 13; and beam emission control means 20, 24, 28, and 29 for controlling emission of the ion beams so that emission of a total amount of the ion beams is to be completed in time with expiration of an emission control time Tex which is pre-set based on the measurement Qm0 of the accumulated beam charge amount. When an irradiation apparatus includes an RMW (Range Modulation Wheel) 32, an amplitude of an emission high frequency voltage is controlled according to a ratio Qm0/Qs0 of the measurement to a reference value of the accumulated beam charge amount and a ratio Tb/Ta of an actual beam emission time to the emission control time Tex. COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:提供一种带电粒子束照射系统和带电粒子束发射方法,用于在同步加速器中有效地发射和使用积聚的光束并且支撑照射束的量的平坦度。 带电粒子束照射系统包括:测量装置15,用于在同步加速器的操作周期内紧接在发射控制周期之前测量在同步加速器13中绕行的离子束的累积束电荷量Qm0为十三倍 13; 以及用于控制离子束的发射的光束发射控制装置20,24,28和29,使得离子束的总量的发射在预定的发射控制时间Tex的到期时间内完成 基于累积光束电荷量的测量Qm0。 当照射装置包括RMW(范围调制轮)32时,根据测量的比率Qm0 / Qs0与累积光束电荷量的参考值和比率Tb / Ta来控制发射高频电压的幅度 的实际光束发射时间到发射控制时间Tex。版权所有(C)2010,JPO&INPIT
    • 9. 发明专利
    • Charged particle irradiation system
    • 充电颗粒辐照系统
    • JP2009000347A
    • 2009-01-08
    • JP2007164990
    • 2007-06-22
    • Hitachi Ltd株式会社日立製作所
    • FUJII YUSUKEFUJIMAKI HISATAKAHIRAMOTO KAZUO
    • A61N5/10G21K1/093G21K5/04
    • A61N5/1048A61N2005/1087G21K5/04
    • PROBLEM TO BE SOLVED: To provide a charged particle irradiation system capable of improving irradiation positional accuracy of a charged particle beam at a target position and decreasing irradiation to normal tissues.
      SOLUTION: This charged particle irradiation system includes an acceleration device 6 for extracting a charged particle beam, scanning magnets 24 and 25, and charged particle beam position monitors 26 and 27. On the basis of signals received from the charged particle beam position monitors 26 and 27, a control unit 70 calculates a beam position at a target position and then controls the scanning magnets 24 and 25 so that the charged particle beam is moved to a desired irradiation position at the target position. The control unit 70 corrects the value of an excitation current applied to each of the scanning magnets 24 and 25 on a specified cycle basis on the basis of information about the position and the angle of the charged particle beam.
      COPYRIGHT: (C)2009,JPO&INPIT
    • 解决的问题:提供能够提高目标位置处的带电粒子束的照射位置精度并减少对正常组织的照射的带电粒子照射系统。 解决方案:该带电粒子照射系统包括用于提取带电粒子束的加速装置6,扫描磁体24和25以及带电粒子束位置监视器26和27.基于从带电粒子束位置 监视器26和27,控制单元70计算目标位置处的光束位置,然后控制扫描磁体24和25,使得带电粒子束移动到目标位置处的期望的照射位置。 控制单元70基于关于带电粒子束的位置和角度的信息,在指定的周期基础上校正施加到每个扫描磁体24和25的激励电流的值。 版权所有(C)2009,JPO&INPIT
    • 10. 发明专利
    • Charged particle beam irradiation system and charged particle beam emission method
    • 充电颗粒光束辐射系统和充电颗粒射束辐射方法
    • JP2008272139A
    • 2008-11-13
    • JP2007117918
    • 2007-04-27
    • Hitachi Ltd株式会社日立製作所
    • FUJIMAKI HISATAKAOKAZAKI TAKASHIHIRAMOTO KAZUONISHIUCHI HIDEAKI
    • A61N5/10G21K5/00G21K5/04
    • PROBLEM TO BE SOLVED: To provide a charged particle beam irradiation system capable of securing high safety and highly accurately performing irradiation with charged particle beams, and a charged particle beam emission method.
      SOLUTION: The charged particle beam emitted from a charged particle beam generator is supplied to a scanning magnet for performing scanning on an irradiation surface vertical to a beam advancing direction, and on the basis of the position and dose on the irradiation surface of the charged particle beam which passes through the scanning magnet, the emission amount of the charged particle beams from the charged particle beam generator is controlled. To put it concretely, the supply of the charged particle beam to a region wherein a target dose is reached among the plurality of regions formed by division on the irradiation surface is stopped and the charged particle beams are supplied to the other regions wherein the target dose is not reached.
      COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:提供一种能够确保高安全性并且高精度地执行带电粒子束的照射的带电粒子束照射系统和带电粒子束发射方法。 解决方案:从带电粒子束发生器发射的带电粒子束被提供给用于在垂直于光束前进方向的照射表面上进行扫描的扫描磁体,并且基于照射表面上的位置和剂量 通过扫描磁体的带电粒子束控制来自带电粒子束发生器的带电粒子束的发射量。 具体地说,停止向被照射面上分割形成的多个区域中的达到目标剂量的区域的带电粒子束的供给,并将带电粒子束供给到目标剂量 没有达到 版权所有(C)2009,JPO&INPIT