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公开(公告)号：US12066473B2
公开(公告)日：2024-08-20
申请号：US17593312
申请日：2020-03-23
Applicant: Southern Innovation International Pty Ltd
Inventor： Christopher McLean , Michael Pauley , Jonathan Manton
IPC: G01R23/15 , G01R23/16 , G01T1/36 , G01R29/033
CPC classification number: G01R23/15 , G01R23/16 , G01T1/36 , G01R29/033
Abstract: A method of determining a spectrum of energies of individual quanta of radiation received in a radiation detector is disclosed. Spectrum sensitive statistics are computed from a time series of digital observations from the radiation detector, defining a mapping from a density of amplitudes of the pulses to the spectrum sensitive statistics. The spectrum is determined by estimating the density of amplitudes of the pulses by applying an inversion of the mapping to the spectrum sensitive statistics. The statistics may be based on a first set of nonoverlapping time intervals of constant length L at least as long as a duration of the pulses without regard to entirety of clusters of the pulses; and a second set of nonoverlapping time intervals of constant length L1 less than L also without regard to entirety of clusters of the pulses. A method of estimating count rate is also disclosed.
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公开(公告)号：US11243327B2
公开(公告)日：2022-02-08
申请号：US16305803
申请日：2017-05-30
Applicant: SOUTHERN INNOVATION INTERNATIONAL PTY LTD
Inventor： Paul Scoullar , Christopher McLean , Shane Tonissen , Syed Khusro Saleem
IPC: G01N23/04 , G01N23/06 , G01N23/083 , G01N23/087 , G01V5/00 , G01J3/28 , G01J3/02 , G01N23/12 , G01N23/10 , G01N21/25 , G01N21/85 , G01N21/93
Abstract: The invention provides a system and method for characterising at least part of a material comprising: a source of incident X-rays (4, 28) configured to irradiate at least part of the material; one or more detectors (300,302,312,1701,1704,1600,1607,1608,1604) adapted to detect radiation emanating from within or passing through the material as a result of the irradiation by the incident radiation (1700) and thereby produce a detection signal (313); and one or more digital processors (304-311,2000-2009) configured to process the detection signal (313) to characterise at least part of the material; wherein the one or more detectors (300,302,312,1701, 1704,1600,1607,1608,1604) and one or more digital processors (304-311,2000-2009) are configured to characterise at least part of the material by performing energy resolved photon counting X-ray transmission spectroscopy analysis.
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公开(公告)号：US20220137111A1
公开(公告)日：2022-05-05
申请号：US17593312
申请日：2020-03-23
Applicant: Southern Innovation International Pty Ltd
Inventor： Christopher McLean , Michael Pauley , Jonathan Manton
Abstract: A method of determining a spectrum of energies of individual quanta of radiation received in a radiation detector is disclosed. Spectrum sensitive statistics are computed from a time series of digital observations from the radiation detector, defining a mapping from a density of amplitudes of the pulses to the spectrum sensitive statistics. The spectrum is determined by estimating the density of amplitudes of the pulses by applying an inversion of the mapping to the spectrum sensitive statistics. The statistics may be based on a first set of nonoverlapping time intervals of constant length L at least as long as a duration of the pulses without regard to entirety of clusters of the pulses; and a second set of nonoverlapping time intervals of constant length L1 less than L also without regard to entirety of clusters of the pulses. A method of estimating count rate is also disclosed.
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公开(公告)号：US20210199592A1
公开(公告)日：2021-07-01
申请号：US17199090
申请日：2021-03-11
Applicant: SOUTHERN INNOVATION INTERNATIONAL PTY LTD
Inventor： Paul Scoullar , Christopher McLean , Shane Michael Tonissen , Syed Khusro Saleem
IPC: G01N21/85 , G01N23/087 , E21B49/00 , G01N21/25 , G01N21/93
Abstract: A material characterization system and method for characterizing a stream of material emanating from a material identification, exploration, extraction or processing activity, the system including a source of incident radiation configured to irradiate the stream of material in an irradiation region, one or more detectors adapted to detect radiation emanating from within or passing through the stream of material as a result of the irradiation by the incident radiation and thereby produce a detection signal, and one or more digital processors configured to process the detection signal to characterise the stream of material, wherein the source of incident radiation and the one or more detectors are adapted to be disposed relative to the stream of material so as to irradiate the stream of material and detect the radiation emanating from within or passing through the stream as the stream passes through the irradiation region.
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公开(公告)号：US20170269257A1
公开(公告)日：2017-09-21
申请号：US15519521
申请日：2015-11-28
Applicant: Southern Innovation International Pty Ltd
Inventor： Paul SCOULLAR , Christopher MCLEAN , Shane TONISSEN , Syed Khusro SALEEM , Brendan ALLMAN
IPC: G01V5/00
CPC classification number: G01V5/0041
Abstract: The invention provides a device (100) for screening one or more items (101,1806) of freight or baggage for one or more types of target material, the device comprising: a source (200, 201,1800) of incident radiation (204,206,1804) configured to irradiate the one or more items (101,1806); a plurality of detectors (202,209,1807, 301) adapted to detect packets of radiation (205,207,1700) emanating from within or passing through the one or more items (101, 1806) as a result of the irradiation by the incident radiation (204, 206, 1804), each detector being configured to produce an electrical pulse (312) caused by the detected packets having a characteristic size or shape dependent on an energy of the packets; one or more digital processors (203, 210, 303, 304, 306, 305) configured to process each electrical pulse to determine the characteristic size or shape and to thereby generate a detector energy spectrum for each detector of the energies of the packets detected, and characterise a material associated with the one or more items based on the energy spectrum.
