Hitachi High-Tech Corporation

Hitachi Automotive Systems, Ltd.

Hitachi, Ltd.

Hitachi-Ge Nuclear Energy, Ltd.

Masashi Fukaya

Shinobu Tashiro

Akira Uenodan

Takumi Ito

Shinji Azuma

Tomoaki Saito

Akihiro Yasui

Naoki Saito

Isao Yamazaki

Takuya Takahashi

Takeshi Morino

Yuji Matsui

Eiichiro Takada

Fujio Yoshikubo

Hisamitu Hatou

Atsushi Inoue

Masaaki Hirano

Hiroaki Ogawa

Tohru Watanabe

Yoshihiro Yamashita

Hitoshi Tokieda

Masashi Akutsu

Ren Morinaka

Takeshi Setomaru

Tsubasa Watanabe

Masato Utsumi

Kouichi Kurosawa

Hidetsugu Tanoue

Ikuo Shigemori

Yu Ikemoto

Hiroshi Iimura

Noboru Saitou

Isao Hagiya

Masamichi Nakamura

Jyunpei Ogawa

Noboru Saito

Ryuji Kimura

Misato Koike

Megumi Kato

Fumiya Nehashi

Akinori Kiyokawa

Masanobu Ino

An automatic analysis deviceincludes an electrolyte measurement unitthat executes internal standard solution measurement once or more at least before potential measurement of the specimen, and when the potential measurement of the specimen is continuously executed by the electrolyte measurement unit, a measurement operation of the internal standard solution before the potential measurement is changed depending on whether there is a possibility that the specimen measured immediately before is a high concentration specimen. This provides an automatic analysis device and an automatic analysis method of a specimen that are capable of improving the processing capacity of the entire device by reducing the carry-over and ensuring measurement accuracy in performing electrolyte measurement.

Automatic analysis device and automatic analysis method of specimen

An automatic analysis apparatus includes: an automatic analysis unitwhich includes a dispensing mechanism including a probe which is configured to dispense a sample or a reagent into a reaction container, a cleaning mechanism; and a control unit. The control unit includes a storage unitconfigured to store count values which indicate weightings to contamination and are set in advance in accordance with a plurality of analysis conditions, a processing unitconfigured to obtain a cumulative count for each dispensing of the sample or the reagent on the basis of the stored count values and to determine whether the obtained cumulative count exceeds a threshold value set in advance, and an instruction unitconfigured to instruct an operation of the cleaning mechanism to clean the probe when a result of determination is that the cumulative count exceeds the threshold value.

Automatic analysis apparatus and cleaning method for same

In this invention, there are cleaning positions, andwhere cleaning tanks, anddischarge cleaning water onto the surfaces of nozzles, andand drying positions, andwhere the cleaning water adhered to the surfaces of the nozzles, andis sucked up. During movement from the cleaning positions, andfor the nozzles, andto the drying positions, andfor the nozzles, and, a control devicecauses system water to be discharged from the nozzles, andfor a first time, and during the sucking up of the cleaning water on the surfaces of the nozzles, andat the drying positions, and, the control devicecauses the system water to be discharged from the nozzles, andfor a second time. As a result, it is possible to effectively remove adhered water drops during nozzle cleaning.

Automated analyzer and cleaning method

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.

Automatic analyzer

An analysis unitfor automatically analyzing a sample comprises a sample dispensing nozzlefor dispensing the sample and an electrolyte measurement unitfor carrying out internal standard liquid measurement one or more times at least before measuring the electric potential of the sample. If the electrolyte measurement unitis to carry out the electric potential measurement of the sample in succession, a different internal standard liquid measurement operation is carried out before the electric potential measurement than if the electric potential measurement is not to be carried out in succession and there are to be gaps between measurement intervals. This results in the provision of an automated analyzer, automatic analysis system, and automatic sample analysis method that make it possible to reduce the influence of ambient temperature on electrolyte measurement, ensure measurement accuracy, and enhance overall device processing capacity.

Automated analyzer, automatic analysis system, and automatic sample analysis method

There is provided an automatic analysis device with a structure in which a measurement unit is less susceptible to disturbance as compared to a device in the related art, and a method of designing the automatic analysis device. A first rotation axisof a reaction disk, a second rotation axisof a reagent disk, and a measurement unit are arranged on the same straight linewhen an automatic analysis deviceis viewed from an upper surface side, the first rotation axisof the reaction diskis arranged between the second rotation axisof the reagent diskand the measurement unit, and the measurement unit is arranged on a front side to be accessed by a user of the automatic analysis device

Automatic analysis device

A cleaning water flow velocity during nozzle cleaning is momentarily changed by using a pressure changing mechanism, for example, a syringe. That is, after the start of cleaning, a solenoid valve is opened, and an aspirating operation of the syringe is momentarily performed by a fixed amount in a state where a flow of cleaning water in a nozzle is developed, whereby a nozzle flow velocity is momentarily decelerated. Immediately thereafter, the syringe is pushed back to a home position again, and the flow velocity in the nozzle is accelerated again. A cleaning effect can be improved by performing transition of velocity distribution to various states. Flow velocity control by the pressure changing mechanism can be realized without inhibiting a dispensing cycle, and the cleaning effect of the nozzle can be improved without changing the pressure of a liquid feeding pump or extending the cleaning time.

Provided is a technique related to an automatic analyzer and capable of ensuring cleaning performance of a reaction container by a cleaning process including a tip suction step, and preventing decrease in analysis accuracy or improving the analysis accuracy. The automatic analyzer includes a control apparatus, a block suction mechanism that moves a suction nozzle and a suction block for suctioning a liquid in the reaction container up and down and suctions the liquid, and a block cleaning mechanism for cleaning the suction block. After receiving an analysis request, the control apparatus causes, in a tip suction step that is provided before an analysis step and is a last step of a cleaning step, both suction of the liquid by the block suction mechanism and cleaning of the suction block by the block cleaning mechanism to be performed in a first step, and then only the suction of the liquid by the block suction mechanism to be performed in a second step including one or more cycles; and causes the analysis step to be performed using the reaction container in which the second step is performed.

Automatic analyzer and automatic analysis method

An automatic analyzer controls a sequence including optical measurement and cleaning and includes a discharge mechanism including a discharge nozzle for discharging a liquid into a reaction vessel; and an overflow suction mechanism including an overflow suction nozzle for sucking an overflow amount of the liquid in the reaction vessel. In a liquid discharge step included in a cleaning process and interposed between a preceding step using a detergent and a succeeding blank value measurement step, the automatic analyzer establishes a first state where a lower end of the discharge nozzle is located in a height-wise lower part of the reaction vessel and a lower end of the overflow suction nozzle is located in an upper part of the reaction vessel, and provides control to carry out the discharge of liquid from the discharge nozzle and the suction of the overflow amount of liquid through the overflow suction nozzle.

A thermal flowmeter includes a plurality of measuring units for stabilizing air flowing in a sub-passage, and improves noise performance or a pulsation characteristic of a flow rate sensor. The thermal flowmeter includes a flange fixed to an attachment part of a main passage, a sub-passage takes in a part of measured gas flowing in the main passage, a flow rate measuring unit measures a flow rate of the measured gas in the sub-passage, a circuit component controls the flow rate measuring unit, and the flow rate measuring unit and an electronic component are mounted on a circuit substrate. The sub-passage is formed in a substrate of the circuit substrate, the sub-passage on a surface side of the circuit substrate and a second space on a rear surface side are separated by the circuit substrate, and a pressure measuring unit and the circuit component are arranged in the second space.

Thermal flowmeter

An automatic analyzer capable of controlling an interval between the tip of a sample nozzle and the bottom of a reaction container regardless of individual differences between reaction containers and sample nozzles and suppressing adhesion of a sample to the sample nozzle is disclosed. Sample nozzlesandare moved toward the bottom surface of a reaction container, the movement of the sample nozzles is stopped at a point in time when a stop position detectordetects a stop position detection plate, the sample nozzles are ascended from the stop position to a position where the stop position detection plateseparates from a detection range of the stop position detector, and an armis moved upward by a moving distance stored in a memory.

The present invention addresses the problem of obtaining a thermal flow meter capable of reducing a pulsation error by preventing a discharge port and a main outlet from being blocked by a vortex during a transient period and reducing a difference between flow speed distributions in normal and pulsation states. This thermal flow meter is provided with a housing disposed in a main passage; and a sub passage provided in the housing. In addition, in the housing, a first outlet and a second outlet of the sub passage are disposed in a downstream end portion of the housing, and a curved surface section is provided adjacent to the first and second outlets.

Thermal flow meter with housing surfaces that minimize vortex formation

An energy operation system, apparatus, and method capable of stably supplying energy and providing adjustment control based on prediction precision and planning precision for energy supply and demand. An energy operation apparatus includes a demand predictor, planner, evaluator, and solution quality controller. The demand predictor predicts demand and/or a power generation amount of future energy in a management area. The planner prepares a future energy supply plan in the management area based on a prediction. The evaluator evaluates supply and/or demand conditions including at least one of future weather in the management area, energy demand in the management area, a demand density and/or a generation density of future energy in the management area. The solution quality controller controls the quality of at least one of a prediction solution of the demand predictor and the energy supply plan of the planner based on an evaluation result from the evaluator.

Energy operation apparatus, method, and system

Growing community of inventors

Tokyo, Japan

Masashi Fukaya