CN113433178A - Ion concentration monitoring system and method - Google Patents
Ion concentration monitoring system and method Download PDFInfo
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- CN113433178A CN113433178A CN202110757864.8A CN202110757864A CN113433178A CN 113433178 A CN113433178 A CN 113433178A CN 202110757864 A CN202110757864 A CN 202110757864A CN 113433178 A CN113433178 A CN 113433178A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 29
- 239000007788 liquid Substances 0.000 claims abstract description 163
- 238000012937 correction Methods 0.000 claims abstract description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 67
- 238000005259 measurement Methods 0.000 claims description 20
- 230000008569 process Effects 0.000 claims description 7
- 239000012088 reference solution Substances 0.000 claims description 3
- 150000002500 ions Chemical class 0.000 description 73
- 238000010586 diagram Methods 0.000 description 6
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000003487 electrochemical reaction Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000002608 ionic liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
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Abstract
The invention discloses an ion concentration monitoring system and a method, wherein a reference liquid pool is introduced into the system, liquid at the initial stage of ion concentration monitoring, called as reference liquid, is stored in the reference liquid pool, a sensor group is used for measuring the ion concentration of the reference liquid during each correction, the concentration data obtained by monitoring is used as reference data to be compared with standard data to obtain correction data, and the sensor group can be accurately corrected by using the correction data. The invention introduces the reference liquid pool and corrects the sensor group through dynamic reference data, thereby improving the accuracy of the correction result.
Description
Technical Field
The invention relates to the technical field of energy development, in particular to an ion concentration monitoring system and method.
Background
Underground water monitoring is an important component of coal mine environment monitoring, and when a water permeation accident happens or occurs, the concentration of specific ions in water can reflect some important information, so that the underground water monitoring is of great importance to the monitoring of the concentration of the ions in the water in coal mine safety production.
The monitoring of the ion concentration in water is usually to insert an ion concentration sensor into water, after the ion concentration sensor and ions in the water generate electrochemical reaction, a voltage signal corresponding to the ion concentration can be generated on the sensor, and the concentration data of target ions can be obtained by analyzing the voltage signal.
Because the ion concentration sensor needs to have electrochemical reaction with ions in water in the monitoring process, the sensor needs to be regularly corrected to ensure that the monitored concentration data is accurate and reliable. However, most of the current correction methods have the problem of being not ideal in effect.
Disclosure of Invention
The embodiment of the invention provides an ion concentration monitoring system and method, which are used for solving the problem that an ion concentration sensor in the prior art is not ideal in correction effect.
In one aspect, an embodiment of the present invention provides an ion concentration monitoring system, including: a main body and a processor;
the main body includes:
the reference liquid pool is used for storing reference liquid;
the sensor group is used for measuring the ion concentration in the reference liquid and the liquid to be monitored;
the working process of the sensor group comprises a correction stage and a measurement stage which are alternately carried out, in the correction stage, the sensor group measures the ion concentration of the reference liquid, the processor takes the ion concentration of the reference liquid as reference data, and the processor determines correction data according to the standard data and the reference data;
in the measuring stage, the sensor group measures the ion concentration of the liquid to be monitored, and the processor determines the real ion concentration of the liquid to be monitored according to the ion concentration of the liquid to be monitored and the correction data.
In one possible implementation, the standard data is ion concentration data obtained by measuring the reference liquid by the sensor group before measuring the ion concentration of the liquid to be monitored.
In one possible implementation, the reference liquid is a liquid obtained from the liquid to be monitored at the initial setup of the monitoring system.
In one possible implementation, the main body further includes: a liquid level sensor;
the liquid level sensor is arranged on the reference liquid pool and used for monitoring the liquid level height of the reference liquid in the reference liquid pool;
the processor adjusts the standard data according to the liquid level height.
In one possible implementation, the main body further includes: the water pump comprises a water inlet pipe, a first electromagnetic valve, a first water pump and a second electromagnetic valve;
the water inlet pipe, the first electromagnetic valve, the first water pump, the second electromagnetic valve and the reference liquid pool are connected in sequence through pipelines;
when the reference liquid pool is filled with water, the first electromagnetic valve and the second electromagnetic valve are opened, the first water pump is started, and the reference liquid is conveyed into the reference liquid pool from the water inlet pipe.
In one possible implementation, the main body further includes: a third electromagnetic valve, a fourth electromagnetic valve and a water outlet pipe;
the first water pump, the third electromagnetic valve, the sensor group, the fourth electromagnetic valve and the water outlet pipe are sequentially connected through a pipeline;
in the measuring stage, the first electromagnetic valve, the third electromagnetic valve and the fourth electromagnetic valve are opened, the second electromagnetic valve is closed, the first water pump is started, and liquid to be monitored is conveyed into the sensor group from the water inlet pipe and is discharged from the water outlet pipe.
In one possible implementation, the main body further includes: the second water pump, the fifth electromagnetic valve and the sixth electromagnetic valve;
the reference liquid pool, the second water pump, the fifth electromagnetic valve, the sensor group and the sixth electromagnetic valve are sequentially connected through a pipeline, and the sixth electromagnetic valve is also connected with the reference liquid pool through a pipeline;
in the correction phase, the fifth electromagnetic valve and the sixth electromagnetic valve are opened, the second water pump is started, and the reference liquid is circularly conveyed to the sensor group.
In another aspect, an embodiment of the present invention provides an ion concentration monitoring method, including a calibration phase and a measurement phase which are performed alternately;
the method of the correction phase comprises:
measuring the ionic concentration of the reference solution;
determining correction data according to the standard data and the reference data by taking the ion concentration of the reference liquid as the reference data;
the method of the measurement phase comprises:
measuring the ion concentration of the liquid to be monitored;
and determining the real ion concentration of the liquid to be monitored according to the ion concentration of the liquid to be monitored and the correction data.
In one possible implementation, the standard data is ion concentration data obtained by measuring a reference liquid before measuring the ion concentration of the liquid to be monitored.
In one possible implementation, the reference liquid is a liquid obtained from the liquid to be monitored at the initial setup of the monitoring system.
The ion concentration monitoring system and method provided by the invention have the following advantages:
and the accuracy of the correction result of the sensor is greatly improved by using dynamic reference data.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic composition diagram of an ion concentration monitoring system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an external structure of a main body according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of an internal structure of a main body according to an embodiment of the present invention;
fig. 4 is a flowchart of an ion concentration monitoring method according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the prior art, when the ion concentration sensor monitors the ion concentration in liquid, the ion concentration sensor and ions can generate electrochemical reaction, so that the sensor needs to be regularly corrected to improve the accuracy of a monitoring result. However, the existing correction methods are mostly performed according to data summarized empirically, and cannot be well adapted to the correction requirements in various scenes, so that the problem of non-ideal correction results is caused.
Aiming at the problems in the prior art, the invention provides an ion concentration monitoring system and method, wherein a reference liquid pool is introduced into an ion concentration monitoring device, liquid at the initial stage of ion concentration monitoring, called reference liquid, is stored in the reference liquid pool, the ion concentration of the reference liquid is measured by a sensor group during each correction, the concentration data obtained by monitoring is used as reference data to be compared with standard data to obtain correction data, and the sensor group can be accurately corrected by using the correction data. The invention introduces the reference liquid pool and corrects the sensor group through dynamic reference data, thereby improving the accuracy of the correction result.
Fig. 1 is a diagram illustrating an ion concentration monitoring system according to an embodiment of the present invention, and fig. 2 and 3 are diagrams illustrating a structure of a main body of the ion concentration monitoring system. The embodiment of the invention provides an ion concentration monitoring system, which comprises:
a main body and a processor 600;
the main body includes:
a reference liquid tank 100 for storing a reference liquid;
a sensor group 300 for measuring the ion concentration in the reference liquid and the liquid to be monitored;
the working process of the sensor group 300 comprises a correction phase and a measurement phase which are alternately carried out, wherein in the correction phase, the sensor group 300 measures the ion concentration of the reference liquid, the processor 600 takes the ion concentration of the reference liquid as reference data, and the processor 600 determines correction data according to the standard data and the reference data;
in the measurement phase, the sensor group 300 measures the ion concentration of the liquid to be monitored, and the processor 600 determines the real ion concentration of the liquid to be monitored according to the ion concentration of the liquid to be monitored and the correction data.
Illustratively, the main body further includes a housing 200, the reference reservoir 100 is mounted outside the housing 200, and the sensor group 300 is mounted inside the housing 200. The sensor set 300 includes a measuring box and a working electrode 310, wherein one end of the working electrode 310 is inserted into the measuring box for measuring the ion concentration of the reference liquid or the liquid to be monitored.
The housing 200 has a measurement pipe 210 therein, the measurement pipe 210 is connected to an inlet and an outlet of the liquid to be monitored, and the measurement pipe 210 is also connected to an inlet and an outlet of the reference liquid tank 100 through a reference liquid inlet pipe 110 and a reference liquid outlet pipe 120, respectively. The inlet and outlet of the measuring cassette are also connected to the measuring tube 210, respectively.
In the embodiment of the present invention, the number of the working electrodes 310 is multiple, the multiple working electrodes 310 are respectively connected to the processor 600 through wires, and after the processor 600 appropriately processes the electrical signals transmitted by the multiple working electrodes 310, for example, averages multiple measured values, so as to obtain the ion concentration data of the reference liquid or the liquid to be monitored. In particular, the electrical signal output from the working electrode 310 needs to be amplified and analog-to-digital converted before being transmitted to the processor 600.
In one possible embodiment, the standard data may be: before measuring the ion concentration of the liquid to be monitored, the sensor group measures the ion concentration data obtained by the reference liquid.
For example, before the first measurement of the ion concentration in the liquid to be monitored, the working electrode 310 in the sensor group 300 may perform a measurement on the ionic liquid with a known concentration in a laboratory, so as to provide a basis for obtaining an absolute value of the ion concentration in a subsequent measurement operation.
In one possible embodiment, the reference liquid may be: liquid obtained from the liquid to be monitored at initial set-up of the monitoring system.
Illustratively, since there are many ions in the liquid to be monitored, the many ions may have an effect on the measurement process of the working electrode 310. If the ionic compositions of the reference liquid and the liquid to be monitored are different, the influence on the working electrode 310 will also be different, which will cause the measurement result of the ionic concentration of the liquid to be monitored to be inaccurate, and therefore, in the embodiment of the present invention, the liquid to be monitored is used as the reference liquid to eliminate the influence difference of the working electrode 310 between different ions.
In the embodiment of the present invention, it is also possible to use the liquid configured in the laboratory as the reference liquid, but the liquid configured in the laboratory needs to have the same ion composition as the liquid to be monitored, and the ion concentration needs to be the same or similar.
In a possible embodiment, the body may further comprise: a level sensor 240. The liquid level sensor 240 is installed on the reference liquid pool 100 and is used for monitoring the liquid level height of the reference liquid in the reference liquid pool 100, and the processor 600 adjusts the standard data according to the liquid level height.
Illustratively, in an ideal case, the reference liquid pool 100 is in an absolutely sealed environment, i.e., the components in the reference liquid are not decreased or increased, i.e., the standard data used in each calibration phase is not changed. However, absolute sealing is difficult to achieve in practice, and liquid loss or moisture evaporation inevitably occurs during the calibration and measurement stages, which may cause the ion concentration of the reference liquid to change, i.e., the standard data to change. In view of the above situation, in the embodiment of the present invention, the liquid level sensor 240 is used to monitor the liquid level height of the reference liquid, if the liquid level height changes, the ion concentration of the reference liquid also changes inevitably, and the processor 600 adjusts the standard data according to the change situation of the liquid level height, so as to reduce the influence caused by the change of the standard data as much as possible. Meanwhile, in the process of injecting the reference liquid, the liquid level sensor 240 also constantly monitors the liquid level in the reference liquid pool 100, and when the liquid level reaches a predetermined value, the processor 600 controls the first water pump 230 to stop working, and the water injection process is ended.
In a possible embodiment, the body may further comprise: a water inlet pipe 500, a first solenoid valve 220, a first water pump 230, and a second solenoid valve 221. The water inlet pipe 500, the first solenoid valve 220, the first water pump 230, the second solenoid valve 221 and the reference liquid tank 100 are connected in sequence through pipes. When the reference liquid tank 100 is filled with water, the first solenoid valve 220 and the second solenoid valve 221 are opened, and the first water pump 230 is started to deliver the reference liquid from the water inlet pipe 500 into the reference liquid tank 100.
For example, the first solenoid valve 220, the first water pump 230, and the second solenoid valve 221 are connected to the processor 600 through wires, and the first solenoid valve 220, the first water pump 230, and the second solenoid valve 221 may be installed inside the housing 200. The water inlet pipe 500 is installed on an outer side of one end of the housing 200 and is connected to one end of the measuring pipe 210.
In a possible embodiment, the body may further comprise: a third solenoid valve 222, a fourth solenoid valve 224 and a water outlet pipe 400. The first water pump 230, the third electromagnetic valve 222, the sensor group 300, the fourth electromagnetic valve 224 and the water outlet pipe 400 are connected in sequence through pipelines. In the measurement phase, the first solenoid valve 220, the third solenoid valve 222 and the fourth solenoid valve 224 are opened, the second solenoid valve 221 is closed, the first water pump 230 is started, and the liquid to be monitored is conveyed from the water inlet pipe 500 to the sensor group 300 and is discharged from the water outlet pipe 400.
Illustratively, the third solenoid valve 222 and the fourth solenoid valve 224 are both connected to the processor 600 by wires, and the third solenoid valve 222 and the fourth solenoid valve 224 may both be mounted inside the housing 200. The water outlet pipe 400 is installed on the outer side surface of the other end of the housing 200, and is connected to the other end of the measuring pipe 210.
In a possible embodiment, the body further comprises: a second water pump 231, a fifth solenoid valve 223, and a sixth solenoid valve 225. The reference liquid pool 100, the second water pump 231, the fifth electromagnetic valve 223, the sensor group 300 and the sixth electromagnetic valve 225 are sequentially connected through a pipeline, and the sixth electromagnetic valve 225 is also connected with the reference liquid pool 100 through a pipeline. In the calibration phase, the fifth solenoid valve 223 and the sixth solenoid valve 225 are opened, and the second water pump 231 is started to circulate the reference liquid to the sensor group 300.
Illustratively, the second water pump 231, the fifth solenoid valve 223 and the sixth solenoid valve 225 are all connected to the processor 600 through wires, and the fifth solenoid valve 223 and the sixth solenoid valve 225 may be installed inside the housing 200, while the second water pump 231 may be installed at the bottom of the reference liquid pool 100, i.e., outside the housing 200.
Fig. 4 is a diagram illustrating an ion concentration monitoring method according to an embodiment of the present invention. In an embodiment of the invention, the method comprises a calibration phase and a measurement phase performed alternately;
the method of the correction phase comprises:
s400, measuring the ion concentration of the reference solution;
s410, determining correction data according to the standard data and the reference data by taking the ion concentration of the reference liquid as the reference data;
the method of the measurement phase comprises:
s420, measuring the ion concentration of the liquid to be monitored;
and S430, determining the real ion concentration of the liquid to be monitored according to the ion concentration of the liquid to be monitored and the correction data.
Illustratively, the output voltage of the ion sensor and the ion concentration are in a logarithmic relationship, so that the measured voltage of the liquid to be measured can be corrected according to the voltage obtained by measuring the reference liquid.
In one possible embodiment, the standard data is ion concentration data obtained by measuring a reference liquid before measuring the ion concentration of the liquid to be monitored.
In one possible embodiment, the reference liquid is a liquid obtained from the liquid to be monitored at the initial setup of the monitoring system.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. An ion concentration monitoring system, comprising: a body and a processor (600);
the main body includes:
a reference liquid pool (100) for storing a reference liquid;
a sensor group (300) for measuring the ion concentration in the reference liquid and the liquid to be monitored;
the working process of the sensor group (300) comprises a correction phase and a measurement phase which are alternately carried out, in the correction phase, the sensor group (300) measures the ion concentration of the reference liquid, the processor (600) takes the ion concentration of the reference liquid as reference data, and the processor (600) determines correction data according to standard data and the reference data;
in the measuring stage, the sensor group (300) measures the ion concentration of the liquid to be monitored, and the processor (600) determines the real ion concentration of the liquid to be monitored according to the ion concentration of the liquid to be monitored and the correction data.
2. An ion concentration monitoring system according to claim 1, wherein said standard data is ion concentration data obtained by said sensor group (300) measuring said reference liquid before measuring the ion concentration of said liquid to be monitored.
3. The ion concentration monitoring system of claim 1, wherein the reference liquid is a liquid obtained from the liquid to be monitored at an initial setting of the monitoring system.
4. The ion concentration monitoring system of claim 1, wherein the body further comprises: a liquid level sensor (240);
the liquid level sensor (240) is mounted on the reference liquid pool (100) and is used for monitoring the liquid level height of the reference liquid in the reference liquid pool (100);
the processor (600) adjusts the standard data according to the liquid level height.
5. The ion concentration monitoring system of claim 1, wherein the body further comprises: the water pump comprises a water inlet pipe (500), a first electromagnetic valve (220), a first water pump (230) and a second electromagnetic valve (221);
the water inlet pipe (500), the first electromagnetic valve (220), the first water pump (230), the second electromagnetic valve (221) and the reference liquid pool (100) are sequentially connected through a pipeline;
when the reference liquid pool (100) is filled with water, the first electromagnetic valve (220) and the second electromagnetic valve (221) are opened, the first water pump (230) is started, and the reference liquid is conveyed into the reference liquid pool (100) from the water inlet pipe (500).
6. The ion concentration monitoring system of claim 5, wherein the body further comprises: a third electromagnetic valve (222), a fourth electromagnetic valve (224) and a water outlet pipe (400);
the first water pump (230), the third electromagnetic valve (222), the sensor group (300), the fourth electromagnetic valve (224) and the water outlet pipe (400) are sequentially connected through pipelines;
in the measuring stage, the first solenoid valve (220), the third solenoid valve (222) and the fourth solenoid valve (224) are opened, the second solenoid valve (221) is closed, the first water pump (230) is started, and liquid to be monitored is conveyed from the water inlet pipe (500) to the sensor group (300) and is discharged from the water outlet pipe (400).
7. The ion concentration monitoring system of claim 1, wherein the body further comprises: a second water pump (231), a fifth electromagnetic valve (223) and a sixth electromagnetic valve (225);
the reference liquid pool (100), the second water pump (231), the fifth electromagnetic valve (223), the sensor group (300) and the sixth electromagnetic valve (225) are sequentially connected through a pipeline, and the sixth electromagnetic valve (225) is also connected with the reference liquid pool (100) through a pipeline;
in the calibration phase, the fifth solenoid valve (223) and the sixth solenoid valve (225) are opened, the second water pump (231) is started, and the reference liquid is circularly conveyed to the sensor group (300).
8. A method of using the ion concentration monitoring system of any of claims 1-7, comprising alternating calibration and measurement phases;
the method of the correction phase comprises:
measuring the ionic concentration of the reference solution;
determining correction data according to standard data and the reference data by taking the ion concentration of the reference liquid as the reference data;
the method of the measurement phase comprises:
measuring the ion concentration of the liquid to be monitored;
and determining the real ion concentration of the liquid to be monitored according to the ion concentration of the liquid to be monitored and the correction data.
9. The method according to claim 8, wherein the standard data is ion concentration data obtained by measuring the reference liquid before measuring the ion concentration of the liquid to be monitored.
10. The method according to claim 8, wherein the reference liquid is a liquid obtained from the liquid to be monitored at the initial setting of the monitoring system.
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2021
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| JPS54130993A (en) * | 1978-03-31 | 1979-10-11 | Hitachi Ltd | Ion concentration analysis |
| JPH07167818A (en) * | 1993-12-16 | 1995-07-04 | Toshiba Corp | Ion concentration measuring apparatus |
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