Ion concentration measurement device

Patent metadata

Field	Value
Publication number	US-2018238829-A1
Application number	US-201615751544-A
Country	US
Kind code	A1
Filing date	Jul 1, 2016
Priority date	Aug 20, 2015
Publication date	Aug 23, 2018
Grant date	—

Abstract

The separation between an ion concentration measuring time period and an information read/write time period is not considered in existing devices. Therefore, in the present invention, the time period for retrieving information from a semiconductor memory mounted in a cartridge and the time period for measuring the concentration of ions are controlled so as not to overlap each other.

First claim

1 . An ion concentration measurement device comprising:
at least one first cartridge in contact with a passage or a container into which a measurement solution containing a target substance to be measured, the at least one first cartridge having a first electrode used to continuously measure a concentration of an ion contained in the measurement solution and a semiconductor memory configured to store information relating to measuring a concentration of an ion; a second cartridge having a second electrode; an electrometer configured to measure a potential difference between the first electrode and the second electrode; an information reader configured to read information with the semiconductor memory; and a control unit configured to control a first period in which the information reader communicates the information with the semiconductor memory so as not to overlap a second period in which the electrometer measures the potential difference.

2 . The ion concentration measurement device according to claim 1 , further comprising an information writer configured to write the information on the semiconductor memory that enables writing data,
wherein the control unit controls a third period in which the information writer communicates the information with the semiconductor memory so as not to overlap the second period.

3 . The ion concentration measurement device according to claim 2 ,
wherein the information is information in transportation and storage and/or information acquired or updated at each measurement.

4 . The ion concentration measurement device according to claim 1 ,
wherein the control unit controls a third period in which valves in the device is opened and closed so as not to overlap the second period.

5 . The ion concentration measurement device according to claim 1 ,
wherein the information is information unique to the first electrode and/or the second electrode determined when manufactured and/or information unique to the passage or the container.

6 . The ion concentration measurement device according to claim 1 ,
wherein the second cartridge has a second semiconductor memory configured to store the information.

7 . The ion concentration measurement device according to claim 1 ,
wherein the first cartridge and the second cartridge are attachable to and detachable from a device main body or the semiconductor memory is attachable to and detachable from the first cartridge and the second cartridge.

8 . The ion concentration measurement device according to claim 1 , further comprising an electromagnetic shield configured to reduce external electromagnetic noise.

9 . The ion concentration measurement device according to claim 1 , further comprising a reagent container having a second semiconductor memory configured to store information relating to measuring a concentration of a specific ion,
wherein the control unit controls a third period in which the information is communicated with the second semiconductor memory so as not to overlap the second period.

10 . The ion concentration measurement device according to claim 1 ,
wherein the information reader communicates with the semiconductor memory in wired communication mode.

11 . The ion concentration measurement device according to claim 1 ,
wherein the information reader communicates with the semiconductor memory in wireless communication mode.

12 . The ion concentration measurement device according to claim 1 ,
wherein a plurality of the first cartridges are configured in an integrated cartridge; and the semiconductor memory that is one semiconductor memory is mounted on the integrated cartridge.

13 . The ion concentration measurement device according to claim 1 ,
wherein the second cartridge and one or a plurality of the first cartridges are configured in one integrated cartridge; and the semiconductor memory that is one semiconductor memory is mounted on the integrated cartridge.

14 . The ion concentration measurement device according to claim 1 ,
wherein the information reader communicates the information by any one of frequency division, time sharing mode based on the difference in signal level, and code division, or by combination of these modes, or by communication band segmenting multiplex mode.

15 . The ion concentration measurement device according to claim 2 ,
wherein the information writer communicates the information by any one of frequency division, time sharing mode based on the difference in signal level, and code division, or by combination of these modes, or by communication band segmenting multiplex mode.

16 . The ion concentration measurement device according to claim 1 ,
wherein a standard solution, an internal standard solution, and the measurement solution are continuously measured; and in measurements of the standard solution, the internal standard solution, and the measurement solution, the control unit controls a first period in which the information reader communicates the information with the semiconductor memory so as not to overlap a second period in which the electrometer measures the potential difference.

17 . The ion concentration measurement device according to claim 1 ,
wherein a plurality of measurements are continuously performed; and the control unit controls the plurality of measurements in a manner to provide a first period that does not overlap the second period in which the information reader communicates the information with the semiconductor memory so as not to overlap the second period in which the electrometer measures the potential difference.

18 . The ion concentration measurement device according to claim 1 ,
wherein the information reader reads one or more pieces of information selected from an ion type that is information unique to an electrode determined when manufactured, a lot number, a serial number, an expiration date, a date of manufacture, a correct output range, an alarm condition, a temporal profile of temperature, temporal profiles of humidity, atmospheric pressure, and acceleration that are information in transportation and storage, and a measurement facility, a measuring device, a person in charge of measurement, a measurement channel, a measurement date and time, types and compositions of used reagents (a standard solution and a diluent), pH, reaction time, stirring time, an aliquot quantity of a sample, an amount of a diluent, a dilution factor, an amount of an introduction solution, introduction time, an introduction flow, an introduction flow rate, temperature, humidity, pressure, measurement cycle time, measurement wait time, data acquisition time, a number of times of data acquisition, potential, a concentration of an ion that is a measurement result, impedance and resistance of an electrode, a number of samples to be measured, sensitivity of a slope, potential stability, repeatability, selectivity, a correction factor, a time response characteristic, sensitivity, a calibration curve remeasurement condition, a data processing algorithm, and a replacement parts that are information acquired or updated every time when measured.

19 . The ion concentration measurement device according to claim 1 , comprising solution delivery means configured to deliver a measurement solution to the first cartridge.

20 . The ion concentration measurement device according to claim 1 ,
wherein the first period is a period in which the information is transmitted and communicated from the information reader to the semiconductor memory.

Assignees

• Hitachi High Tech Corp

Inventors

• Watanabe Yoshito
• Ozawa Satoshi
• Ono Tetsuyoshi
• Miyake Masafumi

Classifications

• G01N27/27

  Association of two or more measuring systems or cells, each measuring a different parameter, where the measurement results may be either used independently, the systems or cells being physically associated, or combined to produce a value for a further parameter · CPC title

• G01N27/28

  Electrolytic cell components · CPC title

• G01N31/00

  Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods · CPC title

• G01N27/416

  Systems (G01N27/27 takes precedence) · CPC title

• G01N27/26

  by investigating electrochemical variables; by using electrolysis or electrophoresis · CPC title