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1. 发明专利

JPH0798383A DUST RADIATION MONITOR 失效
公开(公告)号：JPH0798383A
公开(公告)日：1995-04-11
申请号：JP24123693
申请日：1993-09-28
申请人： TOSHIBA CORP
发明人： ISHIBASHI MITSUO
IPC分类号： G01N1/02 , G01T1/167
摘要： PURPOSE:To provide a dust radiation monitor invariably setting a correct radioactive half-life, accurately measuring the dust radioactive concentration, and easy to operate. CONSTITUTION:This dust radiation monitor is provided with a suction pump 2 sucking the air to be measured into a sampling pipe 1, the filter paper 3 capturing the dust in the air sucked by the suction pump 2, a radiation detector 5 detecting the radioactive rays discharged from the radioactivity in the dust captured by the filter paper 3, and a data processor 7 calculating the dust radioactive concentration from the output of the radiation detector 5, back- calculating the correct radioactive half-life based on the calculated results before and after the replacement of the filter paper 3, and using the correct radioactive half-life obtained by the back calculation for calculating the dust radioactive concentration.

2. 发明专利

JPH06342077A RADIATION DETECTOR AND RADIOACTIVITY CONTAMINATION MONITOR WITH THE USE THERE OF 失效
公开(公告)号：JPH06342077A
公开(公告)日：1994-12-13
申请号：JP13058193
申请日：1993-06-01
申请人： TOSHIBA CORP
发明人： ISHIBASHI MITSUO
IPC分类号： G01T1/169 , G01T1/20
摘要： PURPOSE:To enable measuring radioactivity contamination with uniform detection sensitivity also for the dent on a measuring object and human body. CONSTITUTION:By arranging thin plate scintillators 1 side by side or bending a scintillator 1 so as to make more or equal to two surfaces be side by side forming radiation detection surface, which is fixed to a case 4 having light reflection surfaces on the inner surface. The outside of the scintillator 1 is covered with a thin shading film 2 with at least being light reflection surface inside and a photomultiplier 3 is arranged inside the case 4. Or by arranging plate shape semiconductor radiation detectors for radiation measurement, two or more radiation detection surfaces are formed and each radiation detector surface is connected side by side to fix to the case 4. By arranging a preamplifier inside the case 4 to constitute a radiation detector, this radiation detector is approached to the measuring object or the human body with a drive means.

3. 发明专利

JPH06242248A METHOD FOR DECIDING CONTAMINATION OF RADIATION MONITOR 失效
公开(公告)号：JPH06242248A
公开(公告)日：1994-09-02
申请号：JP2651093
申请日：1993-02-16
申请人： TOSHIBA CORP
发明人： UMEKI HIDEO , KIJI JIYUNICHI , ISHIBASHI MITSUO
IPC分类号： G01T1/169
摘要： PURPOSE:To provide a method for deciding contamination of a radiation monitor which can decide radioactivity contamination in a short time based on preset contamination control counting rate. CONSTITUTION:An upper and lower contamination decision level setter 13 for setting upper and lower contamination decision levels to be decided according to a background counting rate, a background measuring time, a contamination control counting rate and a measuring time based on a formula of assay reference for rejecting coincidence of a net counting rate obtained at an arbitrary measuring time within a predetermined measuring time with a preset contamination control counting rate with statistically sufficient reliability is provided. The two levels are compared by a comparator 18 with a radiation dose measured value to be measured by a detector 17 at an arbitrary time point within a predetermined measuring time, and when the measured value is larger than the upper level, the object to be measured is decided to have 'contamination', while when the measured value is smaller than the lower level, it is decided to have 'no contamination'.

4. 发明专利

JPH06180366A GATE MONITOR 失效
公开(公告)号：JPH06180366A
公开(公告)日：1994-06-28
申请号：JP33299292
申请日：1992-12-14
申请人： TOSHIBA CORP
发明人： ISHIBASHI MITSUO
IPC分类号： G01T1/00 , G01T1/169
摘要： PURPOSE:To allow the smooth measurement of contamination without requiring a long preparation time even for an untrained person, e.g. a visitor, by designating each operation mode for setting the arrangement of each radiation detector. CONSTITUTION:Operation mode, e.g. expert mode, visitor mode, hands/feet nonsetting mode, or unconditional mode, is set by an external setting means 10 when radioactive contamination is monitored and measurement starting conditions are modified according to the operation mode thus set and then contamination is measured by means of radiation detectors 4a-4j.

5. 发明专利

JPH0627241A TRANSFER MONITOR FOR HIGH SPEED PROCESSING ARTICLE 失效
公开(公告)号：JPH0627241A
公开(公告)日：1994-02-04
申请号：JP18357992
申请日：1992-07-10
申请人： TOSHIBA CORP
发明人： ISHIBASHI MITSUO
IPC分类号： G01T1/167
摘要： PURPOSE:To shorten transferring time and to enhance processing capacity by determining the weight of an article and controlling the transfer speed to be low for heavy article whereas to be high for light article. CONSTITUTION:An article 2 to be measured is mounted on a tray 1 and the weight thereof is measured through a weight gauge 9 which delivers measurement data to a data processor 10. The processor 10 makes a decision to which relationship between preset weight ranges and transfer speeds an input signal corresponds and delivers a transfer speed signal based on a decision result to each drive section 3, 5, 7. The article 2 on the tray 1 advances, at a designated speed, on an article transfer roller 4 into an apparatus and elevated through an article elevation driving section 5 into a measuring chamber, subjected to monitoring of radioactive contamination through a radiation detector 6, lowered through the driving section 5, and then contained in a stocker 8 through a vertical stocker moving section 7. Processing capacity can be enhanced significantly by increasing the transfer speed for a light weight article 2.

6. 发明专利

JPH04320987A RADIOACTIVE CONTAMINATION DETECTOR 失效
公开(公告)号：JPH04320987A
公开(公告)日：1992-11-11
申请号：JP8884991
申请日：1991-04-19
申请人： TOSHIBA CORP
发明人： ISHIBASHI MITSUO
IPC分类号： G01T1/167
摘要： PURPOSE:To obtain a radioactive contamination detector capable of shortening measurement time and improving drastically a processing ability. CONSTITUTION:A radioactive detector is provided with a radiation detector 1, a contamination counter means 11 to count the pulse signal output from the radiation detector 1 in a set time, a contamination judgment means 14 which compares the count obtained with the contamination counter means 11 and a contamination regulation level to judge contamination. It also has a background counter means 12 to obtain the background by always counting the signal output from the radiation detector 1 in standby and an optimum count time setting means 13 which takes in the latest background level from the background counter means 12 immediately before the measurement initiation, calculates the shortest count time based on the background level and set the calculated count time in the contamination counter means 11.

7. 发明专利

JPH04301785A RADIOACTIVE RAY MEASURING DEVICE 失效
公开(公告)号：JPH04301785A
公开(公告)日：1992-10-26
申请号：JP6705191
申请日：1991-03-29
申请人： TOSHIBA CORP
发明人： ISHIBASHI MITSUO
IPC分类号： G01T1/169
摘要： PURPOSE:To eliminate the unevenness of sensitivity of radioactive ray detectors so as to maintain the uniformity, and to realize the accurate measurement of radioactive contamination, by adding the outputs of radioactive ray detectors arranged neighboring, of plural radioactive ray detectors, and outputting the resultant values. CONSTITUTION:The outputs of electric signals corresponding to the dosages of radioactive ray detectors N11 to Nij are amplified A11 to Aij, and after a pulse high discrimination is carried out S11 to Sij, they are counted by counters C11 to Cij, and delivered to a data process device F. The device F receives the outputs Q11 to Qij of the counters C11 to Cij corresponding to the outputs of the detectors N11 to Nij, and stores them. And the device F adds the outputs of detectors N11 and N12, N12 and N13... arranged neighboring respectively, to obtain the added outputs Q11+Q12, Q12+Q13.... In this case, since the unevenness of sensitivity of the added outputs Q11+Q12, Q12+Q13... are uniformed artifically better than the sensitivity of individual outputs of the detectors N11, N12, N13..., an accurate measurement of the radioactive contamination can be carried out.

8. 发明专利

JPS6451178A LAUNDRY MONITOR 失效
公开(公告)号：JPS6451178A
公开(公告)日：1989-02-27
申请号：JP20816387
申请日：1987-08-24
申请人： TOSHIBA CORP
发明人： ISHIBASHI MITSUO
IPC分类号： G01T1/167 , B07C5/346 , G01T1/169
摘要： PURPOSE: To enable processing with one unit of laundry monitor by providing this monitor with radiation measuring means, size discriminating means, first and second assorting means for assorting by the presence or absence of contaminations and a control means for controlling these assorting means. CONSTITUTION: The radiations of articles to be measured are measured during the transportation of the articles to be measured in the radiation measuring means 11a and 11b. The articles to be measured which are transported by the transporting means 15 and 17 are assorted by the presence or absence of the contaminations in the first assorting means 18. Further, the means 18 is controlled in accordance with the results of the measurement of the radiation measuring means in the control means 14. The sizes of the articles to be measured are discriminated to large and small sizes based on a prescribed standard in the size discriminating means 24 connected to the control means 14. Either of the large or small sizes among the articles to be measured are assorted by the presence or absence of the radiations in accordance with the discrimination results in the size discriminating means 24 in the second assorting means 16. The means 16 is controlled by the control means 14. Consequently, the processing is made possible with one unit of the laundry monitor.

9. 发明专利

JPS63234186A RADIATION DETECTOR 失效
公开(公告)号：JPS63234186A
公开(公告)日：1988-09-29
申请号：JP6782287
申请日：1987-03-24
申请人： TOSHIBA CORP
发明人： ISHIBASHI MITSUO
IPC分类号： G01T1/172 , G01T1/20
摘要： PURPOSE:To reduce the weight of a radiation detector and to improve the defection efficiency thereof by providing 1st and 2nd radiation detecting means maintaining a certain distance therebetween on a course where radiations pass and outputting only the signal by the radiations simultaneously detected by both the detecting means. CONSTITUTION:The radiations entering at the angles of the radiations b, c with respect to a center line 20 pass only one of the 1st and 2nd radiation detecting means when 3 ways of the incident radiations (a), (b), (c) are considered. The signal from the detecting means is, therefore, outputted only from one detection means. The angle between the course of the radiations and the center line 20 is small on the contrary and the radiation (a) parallel or nearly parallel with the detecting means pass both the radiation detecting means and the signal is outputted from both. Only the radiations within a certain range can, therefore, be detected if only the signal to cause scintillators 13a, 13b to emit light simultaneously is detected. Since the need for a collimator using lead is eliminated by this detector, the reduction of the weight is permitted and since the detector itself has a collimating effect the detector can be brought near to a measuring object. The detection sensitivity is thus improved.

10. 发明专利

JPS5723188A Simultaneous counter 失效
标题翻译：同时计数器
公开(公告)号：JPS5723188A
公开(公告)日：1982-02-06
申请号：JP9784580
申请日：1980-07-17
申请人： Toshiba Corp
发明人： ISHIBASHI MITSUO
IPC分类号： G01T1/172 , G01T1/208 , G06M7/00
CPC分类号： G01T1/208
摘要： PURPOSE:To decrease the number of amplifiers while using some of amplifier, provided in front of a simultaneous counter, in common for the measurement of the contamination of a human surface. CONSTITUTION:Outputs of photoelectron multiplier tubes 501a, 501b, 502a, and 502b of scintillation detectors 501 and 502 are sent out via amplifiers 503-505 and simultaneous counters 506 and 507, but while the amplifier 504 uses the outputs of multiplier tubes 501b and 502a in common, the output of the amplifier 504 is supplied to the simultaneous counters 506 and 507. Namely, the amplifier 504 ANDs the output of the multiplier tubes 501b and 502a to amplify the signals in common, and the simultaneous counters 506 and 507 behind it keep the coincidence between the outputs of the amplifiers 503 and 504, and that between the amplifiers 504 and 505.
摘要翻译：目的：减少放大器的数量，同时使用一些放大器，同时提供在同一台计数器上，以测量人体表面的污染。构成：闪烁检测器501和502的光电子倍增管501a，501b，502a和502b的输出通过放大器503-505和同时计数器506和507发出，但是当放大器504使用乘法器管501b和502a的输出通常，放大器504的输出被提供给同时计数器506和507.即，放大器504将乘法器管501b和502a的输出与乘法器501b和502a的输出进行共同放大，并且在其后面的同时计数器506和507 保持放大器503和504的输出与放大器504和505之间的一致。

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