公开(公告)号：JPS5728275A

公开(公告)日：1982-02-15

申请号：JP10245880

申请日：1980-07-28

Applicant: Aloka Co Ltd

Inventor： IKEDA TERUO ,  TATEISHI NAOKI

IPC: G01T1/17 ,  G01T1/185 ,  G01T1/40

CPC classification number: G01T1/40

Abstract: PURPOSE:To operate the system continuously and fully automatically by making the system check its own sensitivity and zero point automatically and performing compensation and warning. CONSTITUTION:A shutter 28 is opened by a timer 48, and an approximately constant detected signal is outputted from an ionization chamber 10 which is irradiated by a reference radiation source 24. At the same time, the contact 44 is turned ON, the detected signal is compared 40 with a sensitivity reference value at the first time. If the sensitivity is deviated from the range of the specified value, the warning operation is actuated. Then, a switch 38 is turned ON by a check controller 50, the radiation detector 10 is turned to a zero check state, contact 46 is turned ON, and the zero check is performed. In a second comparator 42, the detected signal in the zero check state from the AD converter 20 is compared with the zero reference value. If the detected signal is deviated from the zero reference range, a specified warning is actuated.

Abstract translation: 目的：通过使系统自动检查自身的灵敏度和零点，并进行补偿和警告，可以持续，全面地自动运行系统。 构成：由定时器48打开快门28，从由参考辐射源24照射的电离室10输出近似恒定的检测信号。同时，触点44接通，检测信号 与第一次与灵敏度参考值进行比较40。 如果灵敏度偏离指定值的范围，则启动警告操作。 然后，开关38由检查控制器50接通，放射线检测器10转为零检查状态，触点46接通，并且执行零检查。 在第二比较器42中，将来自AD转换器20的零检查状态中的检测信号与零参考值进行比较。 如果检测到的信号偏离零参考范围，则启动指定的警告。

公开(公告)号：JPS5752878A

公开(公告)日：1982-03-29

申请号：JP12730380

申请日：1980-09-16

Applicant: Aloka Co Ltd

Inventor： OOSHIMA TOSHINORI ,  IKEDA TERUO

IPC: G01T7/02 ,  G01T7/04 ,  G21F9/02

CPC classification number: G01T7/04

Abstract: PURPOSE:To enable simple sampling of radioactive dusts from multisystem, by a method wherein a filter paper is fed stage by stage to sample radioactive dusts in a concentrated manner from a multisystem sampling zone. CONSTITUTION:A plurality of dust flow ports 20 are aligned at equal intervals along a movement path 100. A filter paper retainer 22 adheres firmly to a long-sized filter paper 10 for securing in a position where it is located facing and opposite to the dust flow port 20 with the long-sized filter paper 10 inbetween. Sampling of dusts in air flowing in a suction pipe 28 is conducted in a condition that the dust flow port 20 adheres firmly to the filter paper retainer 22 with the filter paper 10 inbetween. Under a condition that the filter paper 10 is separated from the flow port 20 and it does not move, a solenoid valve 44 is opened, and a suction negative pressure is not applied to a dust feeding means 16. As a result, radioacdive dust does not leak from the dust flow port 20.

Abstract translation: 目的：为了简单地从多系统采样放射性粉尘，通过一种方法，将滤纸逐级进料，从多系统采样区以集中的方式对放射性粉尘进行采样。 构成：沿着移动路径100以相等的间隔对准多个灰尘流通口20.滤纸保持器22牢固地粘附到长尺寸的滤纸10上，以固定在其面对并相对于灰尘的位置 流通口20与长尺寸的滤纸10在其间。 在吸入管28中流动的空气中的灰尘的取样是在灰尘流动口20紧贴滤纸保持器22的情况下进行的，其中滤纸10在其间。 在过滤纸10与流通口20分离并且不移动的情况下，电磁阀44打开，并且吸尘负压不施加到除尘装置16.结果，放射性尘埃 不会从灰尘流通口20泄漏。

公开(公告)号：JPS5728274A

公开(公告)日：1982-02-15

申请号：JP10245780

申请日：1980-07-28

Applicant: Aloka Co Ltd

Inventor： IKEDA TERUO ,  TATEISHI NAOKI

IPC: G01T1/17 ,  G01T1/40

CPC classification number: G01T1/40

Abstract: PURPOSE:To perform continuous full automatic operation by automatically updating the sensitivity compensating value which is computed from a signal detected at the time of irradiation of a reference radiation and the reference value corresponding to the reference radiation, and performing compensation. CONSTITUTION:During the time of normal monitoring operation, a contact 42 is turned ON or a contact 44 is turned OFF, and the converted 20 detected signal is outputted 22a after the sensitivity component value is compensated by a computing device 34. When a timer 46 reaches the sensitivity compensation time, the contact 42 is turned ON, an AND gate 56 is closed, a converter 20 is stopped, and a shutter 28 is opened. Then the detected signal in the ionization chamber 10 irradiated by a reference radiation source 24 is converted 20. In the case the monitored sensitivity is normal, approximately constant signal value is outputted to the sensitivity compensating circuit 22 from the converter 20. Since the contact 44 is turned ON at this time, the detected signal is stored in a register 36. Said detected signal and the reference signal are computed 40, and the result is supplied to the computing device.

Abstract translation: 目的：通过自动更新从照射参考辐射时检测的信号和与参考辐射相对应的参考值计算出的灵敏度补偿值，执行连续全自动操作，并执行补偿。 构成：在正常监视操作期间，在计算装置34补偿灵敏度分量值之后，触点42被接通或触点44断开，转换的20检测信号被输出22a。当定时器46 达到灵敏度补偿时间，触点42接通，与门56关闭，转换器20停止，并且快门28打开。 然后，由参考辐射源24照射的电离室10中的检测信号被转换20.在被监视的灵敏度是正常的情况下，大约恒定的信号值从转换器20输出到灵敏度补偿电路22。 此时，检测到的信号被存储在寄存器36中。计算所述检测信号和参考信号40，并将结果提供给计算装置。

公开(公告)号：JPS56119878A

公开(公告)日：1981-09-19

申请号：JP2335580

申请日：1980-02-28

Applicant: ALOKA CO LTD

Inventor： OOSHIMA TOSHINORI ,  IKEDA TERUO

IPC: G01T1/167 ,  G01T7/02 ,  G01T7/04

Abstract: PURPOSE:To calculate rapidly and automatically the density of a radioactive substance in the air by using the measured value of the radioactivity of filter paper adsorbing dust in the air and duct collection conditions recorded on the surface of the filter paper, by measuring the radioactivity of the filter paper at every dust adsorption part. CONSTITUTION:The monitor path consists of the 1st monitor path 10 and 2nd monitor path 12. Both monitor paths 10 and 12 are equipped with a roll of dust absorbing long-sized filter paper 14 in an interchangeable cassette including supply reel 16 and take-up reel 18. In the 1st monitor path 10, dust in the air is adsorbed and dust collection conditions are recorded; in the 2nd monitor path 12, radioactivity is measured and the dust collection conditions are read. Controller 44 calculates the density of the radioactive substance in the air from the radioactivity measured value and the dust collection conditions. The arithmetic result of controller 44 is outputted from output device 46 as radioactive substance density data.

公开(公告)号：JPS5770475A

公开(公告)日：1982-04-30

申请号：JP14635380

申请日：1980-10-21

Applicant: Aloka Co Ltd

Inventor： IKEDA TERUO ,  TATEISHI NAOKI

IPC: G01T1/17 ,  G01T1/185

CPC classification number: G01T1/185

Abstract: PURPOSE:To form a device maintaining always a normal operation state by correcting zero adjustment and sensitivity by using switching automatically at predetermined times, a reference ray source control device and comparators. CONSTITUTION:The electric charge gathered at the current collecting electrode 12 of an ionization chamber 10 according to radiation dose is converted to voltage by an electrometer 14, and the voltage is digitized by an A/D converter 16. The digital signal is recorded and displayed with a display device 20, a printer 22 and an integrator 24 via a zero point adjusting circuit 100 and a sensitivity correctinng circuit 200. Zero point adjustment and sensitivity correction are carried out by driving flip- flops 44, 68 by the signal of a timer 42 and changing over switches. Select switches 30, 40 are turned on to input the zero adjustment output to a register 32, by which zero point is adjusted. A sensitivity correction value is outputted by the value of a register 58 obtained by irradiation with a reference ray source 46 and the reference value of a register 60 by opening a shutter 50. Zero point as well as the upper and lower limit values of sensitivity are applied to comparators 78, 80, and an alarm is emitted when out of these values. Thereby, the normal operation is continued.

Abstract translation: 目的：通过在预定时间自动切换校正零点调整和灵敏度，构成一个始终保持正常运行状态的设备，参考光源控制装置和比较器。 构成：根据辐射剂量聚集在电离室10的集电极12处的电荷通过静电计14被转换为电压，并且电压由A / D转换器16数字化。数字信号被记录和显示 具有通过零点调整电路100和灵敏度校正电路200的显示装置20，打印机22和积分器24.零点调整和灵敏度校正通过驱动触发器44,46由定时器的信号来执行 42并切换开关。 选择开关30,40打开以将零点调整输出输入到寄存器32，由此调整零点。 通过用参考光源46照射获得的寄存器58的值和通过打开快门50的寄存器60的参考值来输出灵敏度校正值。零点以及灵敏度的上限和下限值是 应用于比较器78,80，并且在这些值之后发出报警。 由此，继续正常运转。

公开(公告)号：JPS5728273A

公开(公告)日：1982-02-15

申请号：JP10245680

申请日：1980-07-28

Applicant: Aloka Co Ltd

Inventor： IKEDA TERUO ,  TATEISHI NAOKI

IPC: G01T1/17 ,  G01T1/185

CPC classification number: G01T1/185

Abstract: PURPOSE:To perform accurate measurement of the amount of variation at all times by automatically updating the zero adjusting value at a specified interval, and adjusting the zero point of a detected signal by said zero point adjusting value. CONSTITUTION:Electric charges collected 12 in an ionization chamber 10 are converted to a voltage signal. ON and OFF operations of a switch 30 in a meter 14 is controlled by a switching signal from a zero point adjusting circuit 18. The output of an AD converter 16 is supplied to a register 36 when the switch 30 is turned OFF and supplied to a register 32 when the switch 30 is turned ON. The outputs of the registers 32 and 36 are operated 40, and the zero point is adjusted. When an FF 44 is inverted for a specified time by the output of a time 42 in a circuit 18, a contact 38 is turned OFF, and the supply of signal to the register 36 is stopped. When a signal is outputted Q from the FF 44, the switch 30 and the contact 34 are turned ON, and the detected signal under the zero checking state is supplied to the register 32, and the zero point adjusting value is updated.

Abstract translation: 目的：通过以指定的间隔自动更新零点调整值，并通过所述零点调整值调整检测信号的零点，始终对变化量进行准确的测量。 构成：电离室10中收集的电荷12被转换为电压信号。 仪表14中的开关30的接通和断开操作由来自零点调整电路18的开关信号控制。当开关30断开时，AD转换器16的输出被提供给寄存器36，并将其提供给 开关30接通时的寄存器32。 寄存器32和36的输出被操作40，并且调整零点。 当通过电路18中的时间42的输出将FF 44反相指定时间时，触点38断开，并且向寄存器36提供信号。 当从FF44输出Q信号时，开关30和触点34接通，零检查状态下的检测信号被提供给寄存器32，并且更新零点调整值。

公开(公告)号：JPS58165076A

公开(公告)日：1983-09-30

申请号：JP4631282

申请日：1982-03-25

Applicant: ALOKA CO LTD

Inventor： IKEDA TERUO ,  YUDA SHINOBU

IPC: B01D46/44 ,  G01N1/02 ,  G01T7/02 ,  G01T7/04 ,  G06K17/00

Abstract: PURPOSE:To achieve a highly accurate radiation management by collating a dust collection requirement information for the writing with a magnetic recording written into a dust collection filter paper loaded into a dust collector of a radioactive dust monitor to determine the adequateness thereof. CONSTITUTION:A dust collection requirement of a dust collector is written magnetically into a filter paper 16 with a head 42 through a control section 40 or the like with a CPU, a ROM and a RAM and the like in response to an operation panel 12. Upon the end of the writing, the operation is automatically shifted to the collation mode which is indicated on a display 14 while a magnetic record on a paper 16 is read with the head 42 as moving through a card through 18 by way of the control section 40 and a feeding mechanism section 44 and collated with dust collection requirement information for writing memorized while it stays in the control section 40 to determine the adequateness thereof. When it is not proper, an alarm is issued and a correct dust collection requirement is always written into the filter paper to achieve a highly accurate radiation management.

公开(公告)号：JPS5752879A

公开(公告)日：1982-03-29

申请号：JP12730480

申请日：1980-09-16

Applicant: Aloka Co Ltd

Inventor： OOSHIMA TOSHINORI ,  IKEDA TERUO

IPC: G01T7/02 ,  G01T7/04 ,  G21F9/02

CPC classification number: G01T7/04

Abstract: PURPOSE:To reduce irradiation on an operator and to perform a high-precise sampling and radiation detection, by a method wherein a dust sampler unit is mounted in a spot which is low in back ground and is easy to maintain and inspect. CONSTITUTION:A holder stocker 36 is located adjacent to a sampling and detecting part 10 for radioactive dust, and a plurality of filter paper holders 42 whereto filter papers for radiactive dust are individually attached are stored in lamination. A lamination holder group in the stocker 36 is moved vertically with an elevating shaft 50 moved vertically. A holder extracting mechanism 58 extracts a given filter paper holder 42 from the lamination holder group to feed it to the sampling and detecting part 10 where a sampling and detection for the radioactive dust are performed. The filter paper holder 42 is then restored to the original position.

Abstract translation: 目的：为了减少操作人员的照射，并进行高精度的采样和放射线检测，通过将灰尘取样器单元安装在背面低的位置并易于维护和检查的方法。 构成：保持架储存器36位于与用于放射性粉尘的采样和检测部分10相邻的位置，并且多个滤纸保持器42分别附着在用于放射性粉尘的滤纸上。 储料器36中的层叠保持器组件随着升降轴50垂直移动而垂直移动。 保持器提取机构58从层叠保持器组中提取给定的滤纸保持器42，以将其馈送到执行放射性粉尘的取样和检测的取样和检测部分10。 然后，滤纸保持器42恢复到初始位置。

公开(公告)号：JPS5610273A

公开(公告)日：1981-02-02

申请号：JP8508579

申请日：1979-07-06

Applicant: ALOKA CO LTD

Inventor： OOSHIMA TOSHINORI ,  IKEDA TERUO

IPC: G01T1/167 ,  G01T7/02 ,  G01T7/04

Abstract: PURPOSE:To perform accurate density calculation by a method wherein the culculation of the radioactive substance density or the gross value is automatically performed, thereby laborsaving is achieved and the dust collecting condition and the radioactivity measured value are processed by the same monitoring card. CONSTITUTION:A monitoring path is composed of the first monitoring path 10 and the second monitoring path 20. The first monitoring path 10 is provided with a card guide 14 and a plurality of monitoring cards 18 accommodated in a stocker 16 is guided by the card guide 14 through a transferring and feeding apparatus 20, while an absorption section 22 performs absorption of air dust to the monitoring card 18 and a writing apparatus 24 performs recording of the dust collecting conditions.

公开(公告)号：JPS55160873A

公开(公告)日：1980-12-15

申请号：JP6898679

申请日：1979-06-04

Applicant: ALOKA CO LTD

Inventor： IKEDA TERUO ,  SUZUKI KAZUO

IPC: G01T1/167 ,  G01T1/00 ,  G01T1/17

Abstract: PURPOSE:To remove the effect of the background by obtaining the background value with the background radiation signal equalized when the measurement is not performed while a subtraction is made between the measured radiation signal and the background value when the measurement is performed. CONSTITUTION:While the measurement is not performed, the detector 10 detects the background radiation signal which is converted into a signal by the counting rate meter. The output of the sample and hold circuit 24 indicates the mean of the background radiation signal. Upon the start of the measuring, the selector circuit 18 is changed over to the integrator 22 side and the measured radiation signal from the detector 10 is integrated with the integrator 22 and subtracted between the set voltage by the subtractor 26. The comparator 30 compares the background value with the radiation signal from which the set voltage is subtracted. The difference output of the two values are outputted from the terminal 32.