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31. 发明专利

JPS59144442A Ultrasonic diagnostic apparatus 失效
公开(公告)号：JPS59144442A
公开(公告)日：1984-08-18
申请号：JP1943883
申请日：1983-02-08
申请人： Mitsubishi Electric Corp
发明人： SANEMORI AKIROU , MAEKAWA TAKAAKI , KURODA SHINICHI
IPC分类号： A61B8/00 , A61B10/00 , G01N29/04

32. 发明专利

JPS58162860A ELECTROMAGNETIC ULTRASONIC WAVE TRANSMITTING TRANSDUCER 失效
公开(公告)号：JPS58162860A
公开(公告)日：1983-09-27
申请号：JP4592182
申请日：1982-03-23
申请人： MITSUBISHI ELECTRIC CORP
发明人： INOUE SATORU , SANEMORI AKIROU
IPC分类号： G01N29/04 , G01N29/24
摘要： PURPOSE:To increase the magnetic field in the horizontal direction on the surface of a material to be inspected and to increase the generating power, that is, generating Lorentz force of a generating coil, by bringing the magnetic body to come near the generating coil to decrease magnetic path resistance. CONSTITUTION:When high frequency pulse current IW1 is supplied to a generating coil 2 from a high frequency pulse power source 4, eddy current JW2 and oscillating magnetic field BW 2 are generated in a material 3 to be inspected. The oscillations of Lorentz force F2 are generated at the two-times frequency tuned to the frequency of the high frequency pulse current in the material 3 by the mutual effects of the eddy current and the magnetic field, and the oscillations propagate as ultrasonic waves in the material to be inspected. Here, laminated silicon steel plates 5 which are magnetic materials are provided to a transmitting transducer 1 to decrease the magnetic path resistance of the magnetic field generated by the current IW2. The generating power is thus made about twice higher and the flaw detection by the electromagnetic ultrasonic waves having high sensitivity is accomplished.

33. 发明专利

JPS5832162A DETECTOR FOR ABNORMALITY OF ELECTROMAGNETIC ULTRASONIC WAVE GENERATOR 失效
公开(公告)号：JPS5832162A
公开(公告)日：1983-02-25
申请号：JP12963881
申请日：1981-08-19
申请人： NIPPON STEEL CORP , MITSUBISHI ELECTRIC CORP
发明人： KAWASHIMA KATSUHIRO , MUROTA SHIYOUJI , INOUE SATORU , SANEMORI AKIROU
IPC分类号： G01N29/04 , G01N29/24
摘要： PURPOSE:To detect the abnormality of an electromagnetic ultrasonic wave generator in an early time and to protect said device by detecting ultrasonic wave transmission current, and judging the presence or absence of any abnormality from the frequency components and magnitude of the waveform of said current. CONSTITUTION:When electric charge is charged from a high voltage DC power source 1 to a capacitor 3 for charging and discharging through a resistor 2 for charging and a switch 4 is closed, the charged electric charge is discharged through a damping resistor 5, a coaxial cable 6 and a signal transmission coil 7. The signal current in this time is detected with a current probe 9, and said current is inputted via a band pass filter 10 and a detector 11 to a comparator 12. In the comparator 12, the current is compared with a threshold value, and when the input signal is larger than the threshold value, a control circuit 13 alarms and displays the generation of abnormality and interrupts the high voltage DC power source 1 in order to protect an electromagnetic ultrasonic wave generator 8.

34. 发明专利

JPS5832160A ELECTROMAGNETIC ULTRASONIC FLAW DETECTOR 失效
公开(公告)号：JPS5832160A
公开(公告)日：1983-02-25
申请号：JP12963681
申请日：1981-08-19
申请人： NIPPON STEEL CORP , MITSUBISHI ELECTRIC CORP
发明人： KAWASHIMA KATSUHIRO , MUROTA SHIYOUJI , INOUE SATORU , SANEMORI AKIROU
IPC分类号： G01N29/04 , G01N29/24
摘要： PURPOSE:To detect flaws with high efficiency and accuracy in adequate response with the change in the conditions of signal transmission by detecting the waveform of transmission current, and processing the detection signal thereof and the ultrasonic reception signal obtained from the output of an amplifier in combination. CONSTITUTION:The output of an electromagnetic ultrasonic wave transmitting and receiving device 20 is inputted to an amplifier 21, by which the signal is amplified to a level at which various signal processings are possible. The amplified signal is inputted to a signal processing unit 31. A current detector 30 detects the waveform of the transmission current of the device 20 and inputs the same similarly to the unit 31. The unit 31 has the function of discriminating whether a probe for signal transmission and reception is in proximity to the material to be inspected or is apart therefrom form the frequency and attenuation time or peak value of the waveform of the transmission current, and handling the output signal of the amplifier 21 as available signal only when said probe is in proximity to the material to be inspected.

35. 发明专利

JPS589066A ULTRASONIC WAVE GENERATING AND DETECTING DEVICE 失效
公开(公告)号：JPS589066A
公开(公告)日：1983-01-19
申请号：JP10786881
申请日：1981-07-10
申请人： MITSUBISHI ELECTRIC CORP
发明人： SANEMORI AKIROU
IPC分类号： G01N29/04 , G01N29/24
摘要： PURPOSE:To prevent a high voltage from being induced in a detecting coil, by providing a transformer where the primary side is connected in series to an exciting coil and the secondary side is connected in series to the detecting coil. CONSTITUTION:The eddy current due to the action between the magnetic field and the ultrasonic wave arriving at the surface of materials 1 is detected by a detecting coil 6 and is inputted to an amplifier 12 through a secondary winding 16 of a transformer 14. At this time, since the primary side of the transformer 14 is cut off by a discharge tube 11, the circuit of the detecting coil 6, the secondary winding 16, and the amplifier 12 are not affected by the state of the primary side at all. When the voltage between terminals of a capacitor becomes a certain value or more, discharge occurs in the discharge tube 11 to constitute a serial resonance circuit, and a high frequency pulse current is flowed in an exciting coil 5 and the primary winding of the transformer 14. Since the exciting coil 5 is provided near the surface of materials 1, an eddy current is generated in materials 1, and an ultrasonic wave is generated by the interaction between the eddy current and the magnetic field.

36. 发明专利

JPS589065A ELECTROMAGNETIC ULTRASONIC PROBE 失效
公开(公告)号：JPS589065A
公开(公告)日：1983-01-19
申请号：JP10786781
申请日：1981-07-10
申请人： MITSUBISHI ELECTRIC CORP
发明人： SANEMORI AKIROU , INOUE SATORU
IPC分类号： G01N29/04 , G01N29/24
摘要： PURPOSE:To reduce the sensitivity to the external electromagnetic noise, by connecting two sets of magnetic field generating devices and detecting coils so that they are operated cumulatively for ultrasolic signals and are operated differentially for external electromagnetic waves. CONSTITUTION:Since first and second exciting coils 21 and 22 are connected in directions opposite to each other, magnetic field in directions opposite to each other are generated near the surface of conductive materials 6. Therefore, directions of eddy currents C1 and C2 generated by an arrival ultrasonic wave B are opposite near the first detecting coil 41 and the second detecting coil 42. Though output signals of detecting coils 41 and 42 due to these eddy currents have polarities opposite to each other, the signal obtained at a receiving terminal is a signal having the double strength and corresponding to the arrival ultrasonic wave because coils 41 and 42 are connected in directions opposite to each other. Meanwhile, external electromagnetic waves induce voltage is detecting coils independently of magnetic fields near the surface of conductive materials, and voltages are induced in detection coils 41 and 42 similarly, but the signal does not appear at the receiving terminal.

37. 发明专利

JPS582743A ULTRASONIC PROBE 失效
公开(公告)号：JPS582743A
公开(公告)日：1983-01-08
申请号：JP10186781
申请日：1981-06-30
申请人： MITSUBISHI ELECTRIC CORP
发明人： SANEMORI AKIROU , INOUE SATORU
IPC分类号： G01N29/04 , G01N29/24
摘要： PURPOSE:To generate and detect longitudinal waves and transversal waves selectively with one probe, by providing two coils for magnet and changing the direction of a generated magnetic field by the selection of them. CONSTITUTION:The first coil 11 for magnet is wound around a column 10a of an iron core 10 for magnet, and the second coil 12 for magnet is wound around a cylinder 10b of the iron core 10. The first flat coil 13 is arranged near the lower end of a groove 10c between the column 10a and the cylinder 10b of the iron core 10, and the second flat coil 14 is arranged in the lower end face of the column 10a. When the coil 11 is selected, the spiral first flat coil 13 is used as a coil for generating and detecting an eddy current to obtain the probe for generating and detecting ultrasonic waves of logitudinal waves. When the coil 12 is selected, the seocnd flat coil 14 is used to obtain the probe for generating and detecting ultrasonic waves of transversal waves.

38. 发明专利

JPS56162046A ULTRASONIC FLAW DETECTOR 失效
公开(公告)号：JPS56162046A
公开(公告)日：1981-12-12
申请号：JP6510980
申请日：1980-05-16
申请人： MITSUBISHI ELECTRIC CORP
发明人： SANEMORI AKIROU
IPC分类号： G01N29/11 , G01N29/24 , G01N29/44 , G01N29/48
摘要： PURPOSE:To surely decide defect shapes with simple constitution by discriminating the shapes of the echo signal peak value-converting element position curves of multiple ultrasonic wave converting elements by a computer. CONSTITUTION:Ultrasonic waves are transmitted simultaneously from a mosaic- shaped ultrasonic wave converting elements 41- forming an ultrasonic probe 4 to a material 1 to be tested, and the echo signals by the elements 41 are stored in the storage part of a microcomputer 11 by way of an analog switch 8, a detecting circuit 9 and an A/D converter 10 of a signal processing circuit 7. In the same manner, the echo signals of the elements 42- are successively stored, whereby echo signal peak value-element position curves are formed. The computer 11 compares the peak valu- element position curves of every defect shape having beforehand been stored with the formed curves, decides defect shapes and displays the same in a display device 12. With this simple constitution, the defect shapes are decided surely and determined.

39. 发明专利

JPS56158977A PRESENCE DETECTOR 失效
公开(公告)号：JPS56158977A
公开(公告)日：1981-12-08
申请号：JP6319780
申请日：1980-05-13
申请人： MITSUBISHI ELECTRIC CORP
发明人： SANEMORI AKIROU , KURODA SHINICHI
IPC分类号： G01V8/10 , G01V8/12 , G01V8/14 , G01V9/04
摘要： PURPOSE:To detect the presence of a body easily by irradiating a reflective tape provided on a wall in a space to be detected and by detecting its reflected light. CONSTITUTION:A light-reflective tape 11 is provided continuously and horizontally, for instance, on walls 12A and 13B of an elevator, in a space to be detected. This tape 11 is irradiated with a projector 13 and its reflected light is detected through a lens 13A by the photodetector 13 consisting of many image sensor elements 13B provided corresponding to positions of the tape 11. Then, a signal processor 14 scans outputs a respective image sensor elements 13B. Therefore, if the arrival of the reflected light at the detector 13 is prevented, a difference in detection level is generated, so that the presence of a body in a space to be detected is detected easily.

40. 发明专利

JPS5357893A INSPECTING APPARATUS OF FLAW BY ULTRASONIC WAVE 失效
公开(公告)号：JPS5357893A
公开(公告)日：1978-05-25
申请号：JP13280876
申请日：1976-11-04
申请人： MITSUBISHI ELECTRIC CORP
发明人： SANEMORI AKIROU
IPC分类号： G01N29/04
摘要： PURPOSE:To accurately decide the existence of defect from the state of level change of reception signal by tandem probe, carried out moving scanning along the open welded face.

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