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公开(公告)号：US4461952A
公开(公告)日：1984-07-24
申请号：US312774
申请日：1981-10-19
申请人： Robert Allemand , Michel Laval , Pierre Parot
发明人： Robert Allemand , Michel Laval , Pierre Parot
摘要： The present invention relates to a portable computing device comprising, in known manner, means for adding digital information, means for determining periods of time and display means, wherein it also comprises a nuclear detector adapted to deliver electrical signals whose amplitude spectrum depends biunivocally on the energy spectrum of the radiation in which it is placed and means for converting these signals into digital information, the addition means receiving said digital information, the means for determining periods of time controlling said addition means so as to make a calculation of the dose of nuclear radiation received during a period of time, called integral dose, which is displayed by said display means. The invention is more particularly applicable in the domain of protection against radiation, or health physics.
摘要翻译： 便携式计算设备本发明涉及一种便携式计算设备，其以已知的方式包括用于添加数字信息的装置，用于确定时间段和显示装置的装置，其中还包括一个核检测器，该核检测器适于将振幅频谱依赖于电视信号 其放置的辐射的能谱和将这些信号转换为数字信息的装置，所述附加装置接收所述数字信息，用于确定控制所述加法装置的时间段的装置，以便计算核剂量 在所述显示装置显示的一段时间内接收的被称为积分剂量的辐射。 本发明更特别适用于防辐射或健康物理学领域。
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公开(公告)号：US3814940A
公开(公告)日：1974-06-04
申请号：US27502272
申请日：1972-07-25
申请人： US AIR FORCE
发明人： AINSWORTH G , SCHNEIDER M
摘要： A portable light weight hand held dosimeter for measuring both dose rate and total dose received. Dose rate is sensed then amplified by a logarithmic electrometer, the signal is processed through a differential amplifier and provides a reading on a calibrated voltmeter. Total dose is sensed and generates a voltage to charge a capacitor, which activates a field effect transistor network, the output is amplified in a compound transistor amplifier which drives a mechanical register.
摘要翻译： 便携式轻量级手持式剂量计，用于测量剂量率和总剂量。 感测剂量率，然后用对数静电计放大，信号通过差分放大器处理，并在校准的电压表上提供读数。 感测总剂量并产生电压以对电容器充电，其激活场效应晶体管网络，该输出在驱动机械寄存器的复合晶体管放大器中放大。
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公开(公告)号：US3614444A
公开(公告)日：1971-10-19
申请号：US3614444D
申请日：1968-11-21
申请人： US ARMY
发明人： NIRSCHL JOSEPH C
摘要： A radiation survey meter adapted to read either dose rate or dose and including a suitable operational amplifier connected to a radiation detector such as an ionization chamber and having a current meter in the output of said operational amplifier. The operational amplifier can be connected as an integrator when the current meter is to indicate dose. Alternatively, it can be connected as a current amplifier to indicate dose rate.
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34.发明授权
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35.发明授权
公开(公告)号：US3122640A
公开(公告)日：1964-02-25
申请号：US2908360
申请日：1960-05-13
申请人： PRESTON V MURPHY
发明人： BERNHARD GROSS
IPC分类号： G01T1/15
CPC分类号： G01T1/15
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公开(公告)号：US2104378A
公开(公告)日：1938-01-04
申请号：US69070333
申请日：1933-09-23
申请人： HERBERT PYCHLAU
发明人： HERBERT PYCHLAU
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公开(公告)号：US12107580B2
公开(公告)日：2024-10-01
申请号：US17999899
申请日：2021-05-26
申请人： mDetect Pty Ltd
发明人： Shanti Krishnan , Alan Duffy , Craig Webster
摘要： A pulse detection circuit configured to detect peak pulse values from pulses contained in an input analog signal includes a control circuit to generate a peak control signal based on input from a microcontroller and/or a peak detector, and a peak track/hold circuit to produce an output peak analog signal responsive to the input analog signal and peak control signal. The peak track/hold circuit includes a peak-detect operational amplifier having first and second input terminals to receive the input analog signal and the peak control signal respectively, and a peak-hold capacitor connected to an output terminal of the operational amplifier. The pulse detection circuit includes an analog to digital converter to produce an output peak digital signal from the output peak analog signal. The peak track/hold circuit switches from a tracking mode to a hold mode upon the arrival of the peak control signal generated from the control circuit.
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公开(公告)号：US20230291407A1
公开(公告)日：2023-09-14
申请号：US17999899
申请日：2021-05-26
发明人： Shanti Krishnan , Alan Duffy , Craig Webster
摘要： A pulse detection circuit configured to detect peak pulse values from pulses contained in an input analog signal includes a control circuit to generate a peak control signal based on input from a microcontroller and/or a peak detector, and a peak track/hold circuit to produce an output peak analog signal responsive to the input analog signal and peak control signal. The peak track/hold circuit includes a peak-detect operational amplifier having first and second input terminals to receive the input analog signal and the peak control signal respectively, and a peak-hold capacitor connected to an output terminal of the operational amplifier. The pulse detection circuit includes an analog to digital converter to produce an output peak digital signal from the output peak analog signal. The peak track/hold circuit switches from a tracking mode to a hold mode upon the arrival of the peak control signal generated from the control circuit.
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公开(公告)号：US10107921B1
公开(公告)日：2018-10-23
申请号：US15769368
申请日：2017-09-05
发明人： Roland Proksa
CPC分类号： G01T1/2006 , G01T1/15 , G01T1/175 , H04N5/32 , H04N5/3597 , H04N5/37455 , H04N5/378
摘要： A radiation detector (100) with a scintillator (102), a photosensor (104) and an electronics module (108) is proposed. The electronics module (108) has a current-to-frequency converter (110) with a charge integrator (112) for generating a pulsed signal in having a frequency correlating with a charge generated by the photosensor (104) during a measurement cycle. The electronics module (108) further comprises a current source (120) for generating a frequency offset of the pulsed signal, an interrupting device (134) for interrupting an integration of the charge by the charge integrator (112), and a logic module (124) for determining the frequency of the pulsed signal. Therein, the logic module (124) is configured for determining an off-state of a radiation (404) source and for triggering the interrupting device (134) upon determining the off-state of the radiation source (404).
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公开(公告)号：US09841508B2
公开(公告)日：2017-12-12
申请号：US15501411
申请日：2014-08-26
发明人： Kenichi Moteki , Toshihide Aiba
CPC分类号： G01T1/026 , G01T1/023 , G01T1/15 , G01T1/16 , G01T1/1603 , G01T1/17 , G01T1/20 , G01T1/201 , G01T1/24 , G01T1/247 , G01T7/00
摘要： Three semiconductor detectors are installed at positions where incidence of radiation on a scintillation detector is not blocked, at equal intervals centered on a central axis of the scintillation detector and at equal angles with respect to a plane which is at a right angle to the central axis. An energy compensation factor is determined on the basis of an average pulse height value obtained from a second pulse height spectrum obtained by analog voltage pulses which are output from these semiconductor detectors, and energy characteristics of a high-range dose rate obtained by a direct-current voltage which is output from the scintillation detector are compensated for.
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