公开(公告)号：US20240036068A1

公开(公告)日：2024-02-01

申请号：US18275448

申请日：2021-11-25

Applicant: Hitachi High-Tech Corporation

Inventor： Shigeru YANO ,  Shinji AZUMA ,  Takeshi MATSUKA

IPC: G01N35/04 ,  B65G54/02 ,  G01N35/00

CPC classification number: G01N35/04 ,  B65G54/02 ,  G01N35/00584

Abstract: In a two-dimensional conveyance line employing an electromagnetic conveyance technique, carriers are conveyed in consideration of the length of a group of stagnated carriers, so as to reduce idle positions and ensure conveyance efficiency of a specimen inspection system and maximize the number of carriers conveyed simultaneously. Current is supplied to a winding of an electromagnetic circuit and an electromagnetic force is generated between the winding and a carrier with a magnet that holds a test tube to move the carrier. The processing efficiency of a specimen inspection system is improved by changing the current of the electromagnetic circuit to change a conveyance speed of the carrier to which the specimen sample is mounted, and by shortening the conveyance time, and reducing the conveyance speed of the carrier and increasing the number of carriers that are conveyed simultaneously as an alternative to detouring the carrier during congestion.

公开(公告)号：US20220018869A1

公开(公告)日：2022-01-20

申请号：US17491192

申请日：2021-09-30

Applicant: Hitachi High-Tech Corporation

Inventor： Shinji AZUMA ,  Isao YAMAZAKI ,  Masashi FUKAYA ,  Takumi ITO

IPC: G01N35/10

Abstract: The object of the invention is to avoid a decrease in dispensing accuracy of a sample, a reagent, or the like as a temperature changes. In an automatic analyzer, a dispensing nozzle sucks the sample from a sample container holding the sample and discharges the sample to a reaction container. A syringe pump controls an amount of change in a volume of water. A first pipe connects the dispensing nozzle and the syringe pump. An electromagnetic valve flows or stops the water. A second pipe connects the electromagnetic valve and the syringe pump. A branch pipe branches the water. A third pipe connects the electromagnetic valve and the branch pipe. A case accommodates at least the syringe pump, the first pipe, the electromagnetic valve, the second pipe, the branch pipe, and the third pipe. Further, the third pipe includes a heat exchange unit that performs heat exchange of the water.

公开(公告)号：US20240420877A1

公开(公告)日：2024-12-19

申请号：US18704389

申请日：2022-09-13

Applicant: Hitachi High-Tech Corporation

Inventor： Satoru KANEKO ,  Takahiro SUZUKI ,  Yasuaki AOYAMA ,  Ryosuke HOSHI ,  Shinji AZUMA ,  Takeshi TAMAKOSHI

IPC: H01F7/20 ,  H01F7/06

Abstract: Provided is a conveyance device that conveys a conveyance object having a magnetic body, the conveyance device including: a plurality of coils configured to generate magnetic flux acting on the magnetic body; a coil driving unit configured to apply a voltage to each of the plurality of coils; and a calculation control unit including a current control unit and a position estimation unit. The current control unit determines the voltage. The position estimation unit estimates a position of the conveyance object based on a change in a current generated by applying a voltage pulse to the coils and switches, according to a position estimation value that indicates the position of the conveyance object estimated by the position estimation unit, between a speed control mode in which a speed of the conveyance object is controlled and a current control mode in which a current through the coils is controlled. Accordingly, in the conveyance device that has a function of estimating the position of the conveyance object based on information on the current flowing through winding wires of the coils, it is possible to implement stable conveyance speed control even in a section in which accuracy for estimating the position or speed of the conveyance object is low.

公开(公告)号：US20240405699A1

公开(公告)日：2024-12-05

申请号：US18696153

申请日：2022-08-10

Applicant: Hitachi High-Tech Corporation

Inventor： Takahiro SUZUKI ,  Satoru KANEKO ,  Shinji AZUMA ,  Takeshi TAMAKOSHI

IPC: H02N15/00 ,  H01F7/06

Abstract: To prevent liquid sloshing caused by switching a coil to be energized in a transport device. A transport device that transports an object to be transported provided with a magnetic body, the transport device includes: a plurality of coils configured to generate a thrust for transporting the object to be transported; a coil drive unit configured to apply a pulsed voltage to each of the plurality of coils; and a calculation unit. When switching a coil to be energized, the calculation unit determines a width of the pulsed voltage such that a speed or an acceleration of the object to be transported is stabilized based on a position of the object to be transported and a time at which the object to be transported passes through the position or a current flowing through an energized coil in a predetermined period before switching the coil to be energized, and outputs the determined width to the coil drive unit.

公开(公告)号：US20240248106A1

公开(公告)日：2024-07-25

申请号：US18560428

申请日：2022-02-28

Applicant: Hitachi High-Tech Corporation

Inventor： Shinji AZUMA ,  Hiroki AKASE ,  Hiroshi WATANABE ,  Shigeru YANO

IPC: G01N35/04

CPC classification number: G01N35/04 ,  G01N2035/0477

Abstract: There is provided a sample conveying device capable of stable conveyance while suppressing power consumption, a sample analysis system, and a method for conveying a sample. In the sample conveying device, the specifications of one of coils 706, 706B, 706C, 706D, 706E, 706F, and 706G or coil shafts 705, 705A, 705C, 705D, 705E, 705F, and 705G are different between magnetic poles 707A, 707B, 707C, 707E, and 707G directly below positions where a container holder 100 does not stop and the magnetic poles 707, 707D, and 707G directly below positions where the container holder 100 stops in a conveyance tile 120.

公开(公告)号：US20230366899A1

公开(公告)日：2023-11-16

申请号：US18029788

申请日：2021-07-28

Applicant: Hitachi High-Tech Corporation

Inventor： Shinji AZUMA ,  Hiroshi WATANABE

IPC: G01N35/04 ,  G01N35/00 ,  B65G54/02

CPC classification number: G01N35/04 ,  G01N35/00584 ,  B65G54/02 ,  G01N2035/0477

Abstract: There are provided a sample container carrier and a sample conveying device capable of reducing a frictional force generated between a container carrier and a conveying plane during conveyance of the container carrier as compared with a case in the related art.
In a conveying device 700, a container carrier 100 includes: a magnetic material body 105; a grip 101 that supports a sample container 150; and a rotating body 111 that is disposed so as to be in contact with a conveying surface 120 for conveying the container carrier 100 and rotates as the container carrier 100 moves, in which the container carrier is conveyed by an electromagnetic force acting on the magnetic material body 105.

公开(公告)号：US20240345110A1

公开(公告)日：2024-10-17

申请号：US18294278

申请日：2022-08-03

Applicant: Hitachi High-Tech Corporation

Inventor： Hiromi Hirama ,  Hikaru TAKIZAWA ,  Tetsuji KAWAHARA ,  Masahiko IIJIMA ,  Shinji AZUMA

IPC: G01N35/00 ,  G01N21/03

CPC classification number: G01N35/00623 ,  G01N21/03 ,  G01N35/0092 ,  G01N2035/00346

Abstract: Prior to dispensing a sample into a reaction vessel 1 and performing sample measurement, an automatic analyzer dispenses pure water into the reaction vessel to perform water blank measurement, corrects absorbance data of a reaction solution of the sample and a reagent measured by sample measurement with water blank absorbance data measured by the water blank measurement, and performs an analytical sequence that analyzes the sample based on the corrected absorbance data, and also determines a water quality abnormality of a reaction tank circulating water 112 based on the water blank absorbance data measured by the water blank measurement. Accordingly, water quality abnormality is detected in a reaction tank circulating water without adding a dedicated mechanism or confirmation operation.

公开(公告)号：US20240067467A1

公开(公告)日：2024-02-29

申请号：US18272323

申请日：2021-10-13

Applicant: Hitachi High-Tech Corporation

Inventor： Takeshi TAMAKOSHI ,  Shigeru YANO ,  Shinji AZUMA ,  Yuichiro SHIGA ,  Daigo SHISHIDO

IPC: B65G54/02 ,  G01N35/04

CPC classification number: B65G54/02 ,  G01N35/04 ,  G01N2035/0477

Abstract: There are provided a sample conveyance system and a sample conveyance method capable of conveying a sample in a more stable manner than in the related art corresponding to a conveyance method using an electromagnetic actuator. A driving unit 208 applies a first voltage to a first coil 207a located on a front side in a traveling direction of a holder 202, which is selected to attract or repel the holder 202, to excite the first coil 207a and applies a second voltage having a polarity opposite to a polarity of the first voltage to at least one or more of second coils 207b among coils 207 adjacent to the first coil 207a except for the coils 207 in the front side in the traveling direction to excite the second coil 207b, and a control unit 210A estimates a position of the holder 202 based on a value of a current flowing through a winding 206 of the first coil 207a.

公开(公告)号：US20240094234A1

公开(公告)日：2024-03-21

申请号：US18266662

申请日：2021-11-10

Applicant: Hitachi High-Tech Corporation

Inventor： Hiroyuki KOBAYASHI ,  Satoru KANEKO ,  Takahiro SUZUKI ,  Yasuaki AOYAMA ,  Ryosuke HOSHI ,  Hiroshi WATANABE ,  Shinji AZUMA

IPC: G01N35/04

CPC classification number: G01N35/04 ,  G01N2035/0406 ,  G01N2035/0477

Abstract: The present invention controls liquid shaking during transportation while maintaining high-precision with respect to the stopping position of a specimen at the time of device start-up. This specimen carrying device includes a plurality of coils that transport a transportation container of a specimen, a coil drive unit, and a control unit, wherein: the control unit includes a liquid shaking determination unit that determines liquid shaking of the specimen from a velocity fluctuation of the specimen; the control unit sets, near a stopping coil 3 that is nearest to the stopping position of the specimen, a first section S1 on a side separated from the stopping coil 3 and a second section S2 on a side nearer to the stopping coil 3 than the first section S1, and sets a first current as a current that energizes the stopping coil 3 when the specimen is in the first section S1 and a second current as a current that energizes the stopping coil 3 when the specimen is in the second section S2; and the first current is set, on the basis of determination information of the liquid shaking determination unit 65, to a magnitude whereby the liquid shaking of the specimen is controlled, and the second current is set to a current value larger than that of the first current.

公开(公告)号：US20230365354A1

公开(公告)日：2023-11-16

申请号：US18029398

申请日：2021-08-25

Applicant: HITACHI HIGH-TECH CORPORATION

Inventor： Ryosuke HOSHI ,  Yasuaki AOYAMA ,  Satoru KANEKO ,  Hiroyuki KOBAYASHI ,  Hiroshi WATANABE ,  Shinji AZUMA ,  Kuniaki ONIZAWA

IPC: B65G54/02 ,  H01F7/20 ,  G01N35/04 ,  B65G43/00

CPC classification number: B65G54/02 ,  H01F7/206 ,  G01N35/04 ,  B65G43/00 ,  G01N2035/0477

Abstract: An objective of the present invention is to provide a conveyance device that can increase inductance variation while suppressing the lowering of thrust. A conveyance device 1 conveys an article 110 to be conveyed. The article 110 to be conveyed can be conveyed by a magnetic force. The conveyance device 1 comprises a plurality of electromagnets 25a and 25b. Each electromagnet 25a, 25b comprises: teeth 22, 22a, 22b, 22c and 22e including a magnetic body; and windings 21, 21a and 21b wound around the teeth 22, 22a, 22b, 22c and 22e. The conveyance device 1 comprises a yoke 26 for magnetically coupling the electromagnets 25a and 25b, and driving circuits 50a and 50b for supplying current to the windings 21, 21a and 21b. The teeth 22, 22a, 22b, 22c and 22e have a cavity 27 extending in the axial direction.