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A data processing method for pulse signal in personal dose alarm meter

A pulse signal and data processing technology, applied in dosimeters and other directions, can solve the problems of sensitive instruments, inability to alarm in time, affecting the normal use of instruments, etc., and achieve the effect of moderate sensitivity and small steady-state error.

Active Publication Date: 2018-08-24
JIANGSU SUPERSENSE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the data processing of the pulse signal is biased towards the steady-state performance of the personal dose alarm instrument, it may cause the instrument to respond slowly to changes in radiation intensity and fail to alarm in time, which may cause the human body to be exposed to excessive radiation; if the pulse signal If the data processing is biased towards the dynamic performance of the personal dose alarm instrument, it may cause the instrument to be too sensitive. Even if the radiation intensity does not change, it will cause misjudgment due to the influence of random fluctuations, thus affecting the normal use of the instrument.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] (1) Store the number of pulses per second 60 seconds before the current moment. Take the average value of the number of pulses per second for 60 seconds as the first alternative reading value of the number of pulses per second at the current moment. At this time, the window length of the sliding average is 60, and the corresponding reading is C 60 ;Take the average value of the number of pulses per second 10 seconds before the current moment as the second alternative reading value of the number of pulses per second at the current moment. At this time, the window length of the sliding average is 10, and the corresponding reading is C 10 . When the instrument is just running, select C 60 The reading displayed for the instrument.

[0046] (2) Make the threshold θ2 for judging the change of radiation intensity=1.6*C 60 , so that the threshold for judging the stability of the radiation intensity θ1=1.0*C 60 . If within 5 consecutive seconds, C 60 and C 10 If the absol...

Embodiment 2

[0049] (1) Store the number of pulses per second 70 seconds before the current moment. Take the average value of the number of pulses per second for 70 seconds as the first alternative reading value of the number of pulses per second at the current moment. At this time, the window length of the sliding average is 70, and the corresponding reading is C 70 ;Take the average value of the number of pulses per second 20 seconds before the current moment as the second alternative reading value of the number of pulses per second at the current moment. At this time, the window length of the sliding average is 20, and the corresponding reading is C 20 . When the instrument is just running, select C 70 The reading displayed for the instrument.

[0050] (2) Make the threshold θ2=3*C for judging the change of radiation intensity 70 , so that the threshold for judging the stability of the radiation intensity θ1=1*C 70 ;. If within 15 consecutive seconds, C 70 and C 20 If the absolut...

Embodiment 3

[0053] (1) Store the number of pulses per second 60 seconds before the current moment. Take the average value of the number of pulses per second for 60 seconds as the first alternative reading value of the number of pulses per second at the current moment. At this time, the window length of the sliding average is 60, and the corresponding reading is C 60 ;Take the average value of the number of pulses per second 10 seconds before the current moment as the second alternative reading value of the number of pulses per second at the current moment. At this time, the window length of the sliding average is 10, and the corresponding reading is C 10 . When the instrument is just running, select C 60 The reading displayed for the instrument.

[0054] (2) Make the threshold θ2 for judging the change of radiation intensity=0.8*C 60 , let the threshold for judging the stability of radiation intensity θ1=0.5*C 60 ; If within 10 consecutive seconds, C 60 and C 10 If the absolute valu...

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Abstract

The invention discloses a data processing method for pulse signals in a personal alarm dosimeter, and is used for judging the quantity of the pulse signals per second in the personal alarm dosimeter, namely judging that the change reason of the pulse quantity per second belongs to which situations when the radiation intensity is unknown, wherein the situations comprises that (a) the radiation intensity is unstable and changes and (b) the radiation intensity is stable, and does not change; and the change of the pulse quantity per second is caused by random fluctuation. According to the scheme, the stable performance and the dynamic performance of the dosimeter are well considered by adopting a bran-new method for judging the pulse quantity change per second, so that the sensitivity of the dosimeter to the radiation intensity change is moderate; the dosimeter can obtain a relatively small steady state error when the radiation intensity does not change; and the dosimeter can quickly follow the change of the external radiation intensity when the radiation intensity changes.

Description

technical field [0001] The invention belongs to the field of data processing of radiation detection equipment, and in particular relates to a data processing method for a pulse signal in a personal dose alarm device, which is worn on a person and used to monitor the intensity of nuclear radiation in the surrounding environment of the human body. Background technique [0002] The personal dose alarm device is an electronic instrument used to monitor the dose equivalent rate and dose equivalent of X-rays and γ-rays irradiated to the human body. The main function of the personal dose alarm device is to send out an alarm signal when the radiation intensity exceeds the protection limit to remind the wearer to prevent excessive exposure. At the same time, in the case of stable radiation intensity, a more accurate indication of the dose equivalent rate is given. Therefore, the reading of the personal dose alarm device needs to take into account both dynamic and steady-state perfor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01T1/02
Inventor 严伟王敏刘飞
Owner JIANGSU SUPERSENSE TECH CO LTD
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