Method of determining whether there is a test sample supply

Patent metadata

Field	Value
Publication number	US-11313712-B2
Application number	US-201916367591-A
Country	US
Kind code	B2
Filing date	Mar 28, 2019
Priority date	Mar 29, 2018
Publication date	Apr 26, 2022
Grant date	Apr 26, 2022

Abstract

A method for determining whether a testing specimen is supplied to a testing system, which includes a reaction tank in which the testing specimen reacts; a light source for emitting testing light into the reaction tank from one side of the reaction tank; and a photoelectric sensor that is placed on the side of the reaction tank opposite to the light source for receiving the testing light traveled through the reaction tank and that converts the received testing light into an electrical signal. The amount of the testing specimen to be added into the reaction tank is set so that the level of the testing specimen is above the light path of the testing light while the reaction tank is cleaned. Whether the testing specimen is supplied is determined based on the presence of change of the electrical signal output from the photoelectric sensor.

First claim

What is claimed is:

1. A testing method using a testing system, the testing system including a reaction tank in which a testing specimen is to react to reagents; a light source for emitting testing light into the reaction tank from one side of the reaction tank; and a photoelectric sensor that is placed on the side of the reaction tank opposite to the light source for receiving the testing light traveled through the reaction tank and that converts the received testing light into an electrical signal,
the method comprising:
cleaning pipes and the reaction tank of the testing system using the testing specimen by adding the testing specimen without the reagents into the reaction tank so that a level of the testing specimen is above a light path of the testing light;
determining whether the testing specimen is supplied based on the presence or absence of change of the electrical signal output from the photoelectric sensor;
discharging the testing specimen from the reaction tank;
after discharging the testing specimen, adding the testing specimen with the reagents into the reaction tank; and
testing the testing specimen added to the reaction tank with the reagents.

2. The method according to claim 1 , wherein it is determined that the testing specimen is supplied based on the presence of a change of the electrical signal output from the photoelectric sensor.

3. The method according to claim 2 , wherein
an online specimen collected in real time by a collecting system is used as the testing specimen when the testing system is used for real time online testing,
and in the determining step, when it is determined that the testing specimen is not supplied, it is also determined that the collecting system is in fault condition.

4. The method according to claim 1 , wherein
the photoelectric sensor is used for converting a light intensity of the testing light into an electrical signal.

5. The method according to claim 4 , wherein
an online specimen collected in real time by a collecting system is used as the testing specimen when the testing system is used for real time online testing,
and in the determining step, when it is determined that the testing specimen is not supplied, it is also determined that the collecting system is in fault condition.

6. The method according to claim 1 , wherein
an online specimen collected in real time by a collecting system is used as the testing specimen when the testing system is used for real time online testing,
and in the determining step, when it is determined that the testing specimen is not supplied, it is also determined that the collecting system is in fault condition.

7. A method for determining whether a testing specimen is supplied to a testing system, including a reaction tank in which the testing specimen reacts; a light source for emitting testing light into the reaction tank from one side of the reaction tank; and a photoelectric sensor that is placed on the side of the reaction tank opposite to the light source for receiving the testing light traveled through the reaction tank and that converts the received testing light into an electrical signal,
the method comprising:
setting an amount of the testing specimen to be added into the reaction tank so that a level of the testing specimen is above a light path of the testing light;
determining whether the testing specimen is supplied based on the presence or absence of change of the electrical signal output from the photoelectric sensor; and
increasing an intensity of the testing light emitted from the light source in cases where the electrical signal from the photoelectric sensor barely changes or does not change, and then determining whether the testing specimen is supplied based on the presence or absence of change of the electrical signal output from the photoelectric sensor.

8. The method according to claim 7 , wherein
an online specimen collected in real time by a collecting system is used as the testing specimen when the testing system is used for real time online testing,
and in the determining step, when it is determined that the testing specimen is not supplied, it is also determined that the collecting system is in fault condition.

Assignees

• Shimadzu Corp

Inventors

• Huang Hongyi
• Xu Chao
• Gu Ting

Classifications

• G01N21/77

  by observing the effect on a chemical indicator · CPC title

• G01F23/2921 Primary

  for discrete levels · CPC title

• B01L2200/143

  Quality control, feedback systems · CPC title

• B01L13/00

  Cleaning or rinsing apparatus · CPC title

• G01N2035/1025

  Fluid level sensing · CPC title