Title:
放射線検出装置及び放射線検出用信号処理装置
Document Type and Number:
Japanese Patent JP6857174
Kind Code:
B2
Abstract:
The present invention is one that removes noise of a voltage signal to be inputted to a pulse processor 5, as well as improves radiation energy resolution, and includes: a radiation detector 2 that outputs charge generated by incidence of radiation; a preamplifier 3 that converts the generated charge into an analog signal; an A/D conversion part 4 that converts the analog signal from the preamplifier 3 into a digital signal; a denoising filter 5 that removes the noise from the digital signal from the A/D conversion part 4; a waveform shaping part 6 that generates a pulse signal from a digital signal having passed through the denoising filter 5; a pulse height detection part 7 that detects peak values of the pulse signal from the waveform shaping part 6; and a count part 8 that, on a pulse height basis, counts the peak values obtained by the pulse height detection part 7, in which the denoising filter 5 is one that removes the noise by taking the weighted moving average of values of the digital signal with use of a weighting factor depending on the difference from a predetermined reference value.
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Inventors:
Satoshi Ohashi
Application Number:
JP2018514250A
Publication Date:
April 14, 2021
Filing Date:
April 11, 2017
Export Citation:
Assignee:
HORIBA, Ltd.
International Classes:
G01T1/17; G01T1/24; G01T1/36
Domestic Patent References:
| JP2008501954A | ||||
| JP2013186109A | ||||
| JP2010169645A | ||||
| JP2014211381A | ||||
| JP2011511927A |
Foreign References:
| WO1994028438A1 | ||||
| KR1020150120205A |
Attorney, Agent or Firm:
Ryuhei Nishimura
Saito Shindai
Saito Shindai