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51. 发明专利

JPH10153459A METHOD FOR ESTIMATING ENERGY SOURCE DISTRIBUTION WITHIN SYSTEM 失效
公开(公告)号：JPH10153459A
公开(公告)日：1998-06-09
申请号：JP31528096
申请日：1996-11-26
申请人： MITSUBISHI ELECTRIC CORP
发明人： YODA KIYOSHI , SAITOU CHIYOUKO
IPC分类号： G01D21/00 , G01R29/08 , G01R33/02 , G01T1/16 , G06F19/00
摘要： PROBLEM TO BE SOLVED: To precisely estimate the intensity information on an energy source within a system by calculating the ratio of an energy distribution vector calculated by use of a searched energy source density distribution to a measured energy distribution vector, and taking the energy source density distribution to this ratio as an estimated energy source density distribution. SOLUTION: The minimum value qmin and maximum value qmax of an energy source density to be estimated are determined, and the minimum energy source density qmin is set to m-pieces of energy source density set positions Xi (i=1...m). Only the energy source density qi in each set position xi is increased by a prescribed value Δq to calculate an energy distribution vector Ui , and degree of pattern conformation γi is calculated from this vector Ui and a measured energy distribution vector V to search an energy source density distribution P imparting the maximum degree of pattern conformation γi . The ratio (a) of the energy distribution vector Up calculated by use of the density distribution P to the measured energy distribution V is determined, and P/a is taken as the best estimated value of the estimated energy source density distribution.

52. 发明专利

JPH09160903A METHOD FOR ESTIMATING PHYSICAL QUANTITY DISTRIBUTION 失效
公开(公告)号：JPH09160903A
公开(公告)日：1997-06-20
申请号：JP31682195
申请日：1995-12-05
申请人： MITSUBISHI ELECTRIC CORP
发明人： YODA KIYOSHI
IPC分类号： G06F17/12 , G06F17/00 , G06Q10/04
摘要： PROBLEM TO BE SOLVED: To obtain a physical quantity distribution estimating method by which the calculating time for a matrix equation can be remarkably shortened and the physical quantity distribution can be estimated at a high speed by converting a close matrix into a non-dense matrix in which many zero elements are included by a wavelet conversion processing and solving the matrix equation. SOLUTION: An imparted governing equation is converted into a boundary integral equation (ST2), the boundary integral equation is converted into a digitizing equation (ST3), the digitizing equation is converted into a matrix equation A.x=b (ST4), a wavelet conversion is performed for the obtained matrix equation A.x=b (ST4), the converted matrix equation At .xt =bt is approximately solved by substituting zero for the matrix element whose absolute value is threshold or below in the matrix At , (ST6) approximate physical quantity distribution x* is determined by performing a wavelet inverse conversion for the approximate solution xt (ST7) and the correction of the approximate physical quantity distribution x* is performed by the repeated calculation (ST8).

53. 发明专利

JPH0915335A RADIATION DETECTOR AND DETECTING METHOD OF RADIATION 失效
公开(公告)号：JPH0915335A
公开(公告)日：1997-01-17
申请号：JP8284496
申请日：1996-04-04
申请人： MITSUBISHI ELECTRIC CORP
发明人： OKA TORU , IKEGAMI KAZUNORI , YODA KIYOSHI
IPC分类号： G01T1/00 , G01T1/203 , G01T5/08 , G02B6/00 , G01T1/20
摘要： PROBLEM TO BE SOLVED: To obtain the two-dimensional or three-dimensional distribution of a radiation (distribution of a radiation source or distribution of radiation intensity in a space) in an environment wherein scintillation fibers are placed. SOLUTION: A radiation detecting system 100A including scintillation fibers 102a and 102b are disposed two-dimensionally or three-dimensionally. Multichannel pulse-height analyzers 109a and 109b obtain a position of incidence of a radiation and a radiation dose rate at the position of incidence in the radiation detecting system 100A from a signal having a pulse height corresponding to a difference in the time of arrival between two input signals. A microcomputer 110 executes an inverse problem analysis and estimates the distribution of a radiation source 101 or the distribution of radiation intensity in a space.

54. 发明专利

JPH08304597A REMOVING DEVICE AND METHOD FOR CONCRETE SURFACE LAYER CONTAMINATED BY RADIOACTIVITY 失效
公开(公告)号：JPH08304597A
公开(公告)日：1996-11-22
申请号：JP11485395
申请日：1995-05-12
申请人： MITSUBISHI ELECTRIC CORP
发明人： YODA KIYOSHI
IPC分类号： G21F9/28
摘要： PURPOSE: To efficiently remove contaminated surface layer by braking and pealing or dissolving the surface layer with a moving energy irradiation means, sucking and capturing the product to measure radioactivity intensity and control ling the moving means and irradiation means in accordance with the judgement results for the output. CONSTITUTION: Microwave from a microwave generator 3 is cast from an electromagnetic horn 7 through a waveguide 10 onto concrete surface layer 8. Microwave heats the water in the concrete and breaks and peals the surface layer 8. Such product as fragments and dust, etc., are sucked simultaneously with a suction pump 18 and captured with a capture means 12 and their radioactivity intensity is measured with radioactive detector 14. Its output is sent through a cable 16 into a judgement control means 20 to judge whether an acceptance level is over or not. If the level becomes below the acceptance level, the removal of concrete at that site is judged to be enough. Then the means 20 sends the signal via a cable 22 to movement control mechanism 23 in a moving device 1 and moves the device to other site where the concrete removing work is operated again.

55. 发明专利

JPH07303633A X-RAY BREASTS IMAGING DEVICE 失效
公开(公告)号：JPH07303633A
公开(公告)日：1995-11-21
申请号：JP9763494
申请日：1994-05-11
申请人： MITSUBISHI ELECTRIC CORP
发明人： YODA KIYOSHI
IPC分类号： A61B6/00 , A61B6/04
摘要： PURPOSE:To obtain a good image suitable for diagnosis even if breasts are small by radiating a X-ray to breasts hanging down vertically using a breasts setting means to detect the radiated X-ray. CONSTITUTION:When breasts 12 of a patient is imaged, the patient is laid on a diagnostic bed so that her body 11 becomes horizontal with breasts downward, the breasts 12 of the patient is inserted into a gap 13a for breasts insertion. The breasts 12 of the patient hangs down vertically by gravity, the breasts are held between a X-ray film table 1 and a compressing board 2 by moving this horizontally. In this condition, an operator operates an operation terminal 14 to radiate a X-ray beam from a X-ray radiator 17 to the breasts 12, the radiated X-ray beam is inputted to a X-ray film 5, that is the breasts 12 is imaged on the X-ray film 5.

56. 发明专利

JPH02269987A HIGH FREQUENCY PROBE FOR NMR 失效
公开(公告)号：JPH02269987A
公开(公告)日：1990-11-05
申请号：JP9086089
申请日：1989-04-12
申请人： MITSUBISHI ELECTRIC CORP
发明人： YODA KIYOSHI
IPC分类号： G01R33/20 , A61B5/055 , G01R33/32 , G01R33/34 , G01R33/36 , G01R33/38
摘要： PURPOSE:To constitute the high frequency probe for nuclear magnetic resonance (NMR) which has two kinds of resonance frequencies by one probe by arranging a couple of capacitors for resonance orthogonally to each other and making their electrostatic capacities different. CONSTITUTION:When a high frequency voltage is inputted to a coupling coil 5a for electric feeding through a terminal 7a, a high frequency magnetic field is produced extending to the coil 5a and the capacitor 3 operates as a capacitor for resonance at this time, so a resonance current flows to the horizontal parts of conductor plates 1a and 1b, and 2a and 2b toward the coil 5a. Further, when electricity is fed by a coupling coil 5b for electric feeding, a high frequency magnetic field is produced extending to the coil 5b and a capacitor 4a operates as a resonance capacitor, so that a resonance current flows toward the coil 5b. At this time, the resonance frequencies f1 and f2 are determined by the inductances of the conductor plates 1a and 1b, and 2a and 2b and the electrostatic capacities C1 and C2 of the capacitors 3 and 4, but when the capacities C1 and C2 are different, the frequencies f1 and f2 are different, so the high frequency probe for NMR which has the two resonance frequencies can be constituted.

57. 发明专利

JPH0228578A PERPENDICULARITY ADJUSTING METHOD AND HIGH FREQUENCY PROBE FOR NMR 失效
公开(公告)号：JPH0228578A
公开(公告)日：1990-01-30
申请号：JP23228688
申请日：1988-09-19
申请人： MITSUBISHI ELECTRIC CORP
发明人： KUROKAWA MASAAKI , YODA KIYOSHI
IPC分类号： G01R33/36
摘要： PURPOSE:To easily adjust the symmetry for the generation and detection of a revolving magnetic field by sending a high frequency wave to one feed terminal and exciting a high frequency coil in one resonance mode. CONSTITUTION:The high frequency wave is sent to one feed terminal 13a of the high frequency coil which generates and detects the revolving magnetic field to excite the high frequency coil in one resonance mode. At this time, while the frequency dip of the signal obtained at the other feed terminal 13b is measured, capacitors Ca and Cc for one resonance mode amount variable capacitors 16 for resonance which are arranged symmetrically on the circumference of the high frequency coil are adjusted so that Ca+KCc (K: constant) does not vary. Further, the high frequency wave is sent to the other feed terminal 13b to excite the high frequency coil in the other resonance mode crossing one resonance mode at right angles. At this time, while the dip of the signal obtained at one feed terminal 13a is measured, capacitors Cb and Cd for the other resonance mode are so adjusted that Cb+lCd [(l): constant] does not vary, thereby setting the dip to a desired frequency.

58. 发明专利

JPH021291A MAGNETIC INDUCTION POSITION CONTROL APPARATUS AND MAGNETIC TREATMENT APPARATUS 失效
公开(公告)号：JPH021291A
公开(公告)日：1990-01-05
申请号：JP11282788
申请日：1988-05-10
申请人： MITSUBISHI ELECTRIC CORP
发明人： YODA KIYOSHI , YAMADA TADATOSHI
IPC分类号： A61M25/01 , A61M25/00
摘要： PURPOSE:To accurately and easily guide a magnetized body to be induced to a predetermined position in a cylindrical tube by mounting a magnetic field generating means for generating a DC magnetic field for magnetizing the body to be induced and a gradient magnetic field, which has a locally steep gradient and catches the body to be induced at the focus thereof to magnetically induce the same to the predetermined position in the cylindrical tube, in two axial directions crossing mutually at a right angle. CONSTITUTION:A body 10 to be induced such as a magnetic body is magnetically induced to a predetermined position in a blood vessel 3 of a human body 4 to be caught at the focus of a magnetic field. DC magnetic field generating means 12x, 12y, 12z are provided on respective axes (x), (y), (z) and each of them is a coil pair generating an almost uniform DC magnetic field in each axis direction. Gradient magnetic field generating means 13x, 13y, 13z are composed of many circular loop coil pairs provided on respective axes (x), (y), (z) and each of them generates a magnetic field having a locally steep gradient in each axis direction and a high order shim coil is used in them. Almost uniform strong DC magnetic fields are formed by the coils 12x, 12y, 12z and steep gradient magnetic fields are formed by the coils 13x, 13y, 13z and, as a result, the small body 10 to be induced can be induced against blood flow.

59. 发明专利

JPH01244347A APPARATUS FOR DETECTING GENERATION OF HIGH FREQUENCY MAGNETIC FIELD 失效
公开(公告)号：JPH01244347A
公开(公告)日：1989-09-28
申请号：JP6966288
申请日：1988-03-25
申请人： MITSUBISHI ELECTRIC CORP
发明人： YODA KIYOSHI , KUROKAWA MASAAKI
IPC分类号： G01R33/32 , A61B5/055 , A61B10/00
摘要： PURPOSE:To ensure the protection of a receiver when a high frequency magnetic field is applied, by selecting the specifications of a closed loop coaxial line so that the transmission losses of two transmission paths from the connecting point of a transmitter to the connecting point of the receiver become substantially equal. CONSTITUTION:A transmitter 5, a receiver 6 and first and second high frequency coil parts 1 and 3 are connected through a closed loop coaxial line 19 in an apparatus for detecting the generation of a high frequency magnetic field. In this apparatus, the lengths between line segments between connecting points P1-P4 for said units are set as follows. Namely, the length between the points P1 and P4 is set at (3/4)lambda. The lengths between the points P1 and P3, between the points P3 and P2 and between the points P2 and P4 are set at lambda/4. The transmission paths in the clockwise direction and the transmission path in the counterclockwise direction between the connecting points P1 and P2 are constituted with coaxial cables having the different specifications. In this way, induced power at the connecting point P2 is positively offset when a high frequency is applied and a leaking voltage to the receiver is decreased. Therefore the protection of the receiver can be ensured.

60. 发明专利

JPH01213559A HIGH-FREQUENCY PROBE FOR NMR AND ITS ADJUSTING METHOD 失效
公开(公告)号：JPH01213559A
公开(公告)日：1989-08-28
申请号：JP3858688
申请日：1988-02-23
申请人： MITSUBISHI ELECTRIC CORP
发明人： YODA KIYOSHI
IPC分类号： G01R33/32 , A61B5/055 , A61B10/00 , H03H7/38
摘要： PURPOSE:To obtain a high-frequency probe for NMR which can be used as a transmission/reception probe and whose impedance matching can be performed easily by shifting the resonance frequency on a coil side by operating a parallel resonance circuit depending upon whether or not the high-frequency coil generates magnetic field pulses. CONSTITUTION:A parallel resonance circuit 4 provided with an inductance element 4a and capacitance element 4b is connected to an impedance matching circuit containing a coupling coil 2 which is magnetically coupled with a high-frequency coil 1. A small-sized coil to be used for the transmission and reception of a spectrum analyzer is magnetically coupled with the element 4a and the capacity of the element 4b is adjusted so that two peaks can be obtained on both sides of a using frequency by finding the receiving spectrum of the circuit by sweeping the frequency of a high-frequency magnetic field to be impressed. When the coil 1 generates high-frequency magnetic field pulses, the circuit 4 is invalidated, but, when no high-frequency magnetic field pulse is transmitted, the circuit 4 is validated and the resonance frequency on the coil 1 side can be shifted.

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