公开(公告)号：US20190107549A1

公开(公告)日：2019-04-11

申请号：US16086699

申请日：2017-01-24

Applicant: Hitachi High-Technologies Corporation

Inventor： Hidetsugu TANOUE ,  Yoichiro SUZUKI

IPC: G01N35/10

Abstract: In preparation for a case in which the time at which a first reagent probe comes into contact with cleaning liquid and the time at which a second reagent probe comes into contact with cleaning liquid are the same, an automated analyzer is provided with a charge accumulation unit that is provided between a supply port comprising a conductive material that is electrically connected to the cleaning liquids and a device housing and has a capacitance that is greater than or equal to that of the first reagent probe and second reagent probe. As a result, it is possible to prevent interference between the liquid-surface contact determination units of a plurality of probes.

公开(公告)号：US20200271679A1

公开(公告)日：2020-08-27

申请号：US16646189

申请日：2019-01-29

Applicant: HITACHI HIGH-TECHNOLOGIES CORPORATION

Inventor： Hiroki NAKANO ,  Hidetsugu TANOUE ,  Yoichiro SUZUKI ,  Takenori OKUSA

IPC: G01N35/02 ,  G01N35/10 ,  G01N35/04

Abstract: An automatic analyzer which accurately detects a liquid volume of a reagent irrespective of a shape of a reagent container is provided. The invention is directed to an automatic analyzer including: a reagent container that contains a reagent; an emission unit that is provided outside the reagent container and emits light so as to pass inside the reagent container; a light receiving unit that is provided outside the reagent container and receives the light emitted from the emission unit; and a determination unit that, based on the light received by the light receiving unit, detects a liquid level inside the reagent container, and determines whether a liquid volume in the reagent container becomes equal to or less than a predetermined value from the liquid level. A wavelength of the light is determined based on a material of the reagent container and a type of the reagent.

公开(公告)号：US20180066986A1

公开(公告)日：2018-03-08

申请号：US15561190

申请日：2016-03-16

Applicant: HITACHI HIGH-TECHNOLOGIES CORPORATION

Inventor： Yutaka KASAI ,  Fujio ONISHI ,  Osamu TASAKI ,  Hidetsugu TANOUE ,  Kazuhiro TANAKA

IPC: G01J1/44 ,  G01N21/66 ,  G01N23/225 ,  G01T1/164 ,  G01T1/20 ,  G01N21/956

CPC classification number: G01J1/44 ,  G01J1/42 ,  G01J2001/444 ,  G01N21/66 ,  G01N21/956 ,  G01N23/203 ,  G01N23/22 ,  G01N23/225 ,  G01T1/1647 ,  G01T1/20 ,  G01T1/208 ,  H01J37/28

Abstract: A signal detected by a photomultiplier tube is pre-amplified and converted into a digital signal. A time average value of signal components, each of which has a voltage lower than a predetermined base threshold value, is calculated as a base voltage. A signal that has been subjected to base correction processing is subjected to threshold value processing and to base correction processing in a non-incident state in which light is not incident on the photomultiplier tube. An output signal thereof is subjected to dark current calculation processing; and a light emission signal amount is calculated by subtracting, from the signal component of the detection light obtained by the threshold value processing, a time average value of the signal components of the dark current. As the result, discriminating the dark current pulse from floor noises enhances the accuracy of the base voltage, and thus the accuracy of light detection.