CN113406176B - Water solution oxidation reduction potential value rapid testing device with mechanical stirring function - Google Patents
Water solution oxidation reduction potential value rapid testing device with mechanical stirring function Download PDFInfo
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Abstract
The invention provides a device for rapidly testing the oxidation-reduction potential value of an aqueous solution with mechanical stirring, which comprises the following steps: the control module is used for controlling the mechanical stirring device to stir the aqueous solution based on the test instruction and detecting the flow speed of the stirred aqueous solution; the ion capturing module is used for controlling a cathode and an anode in the oxidation-reduction electrode to capture ions in the stirred aqueous solution based on the flow speed of the aqueous solution; and the display module is used for converting the potential difference formed after the cathode and the anode capture the ions of the aqueous solution into an oxidation-reduction potential value in real time and displaying the oxidation-reduction potential value on the electronic display screen. The flow speed of the aqueous solution is accelerated by the mechanical stirring device, the time of capturing ions by the redox electrode is shortened, and the rapid test of the redox potential value of the aqueous solution is realized.
Description
Technical Field
The invention relates to the technical field of analytical chemistry, in particular to a device for quickly testing an oxidation-reduction potential value of an aqueous solution with mechanical stirring.
Background
At present, the existing oxidation-reduction potential (ORP) value of a test aqueous solution is to directly put an ORP electrode into a static aqueous solution for testing, and read the maximum potential value between the cathode and the anode of the ORP electrode as the ORP value of the oxidation-reduction potential of the tested aqueous solution;
however, because the water solution is static, ions in the water solution can be captured only after approaching the electrode, the free movement of the ions in the water solution is relatively slow in the static water solution, and saturated ions are captured by the ORP electrode, namely, the time required for obtaining the maximum ORP value is long;
therefore, the invention provides a device for rapidly testing the oxidation-reduction potential value of the aqueous solution with mechanical stirring, which is used for accelerating the flow speed of the aqueous solution and shortening the time of capturing ions by an oxidation-reduction electrode, thereby realizing the rapid test of the oxidation-reduction potential value of the aqueous solution.
Disclosure of Invention
The invention provides a device for rapidly testing the oxidation-reduction potential value of an aqueous solution with mechanical stirring, which is used for accelerating the flow speed of the aqueous solution and shortening the time of capturing ions by an oxidation-reduction electrode, thereby realizing the rapid test of the oxidation-reduction potential value of the aqueous solution.
The invention provides a device for rapidly testing the oxidation-reduction potential value of an aqueous solution with mechanical stirring, which comprises:
the control module is used for controlling the mechanical stirring device to stir the aqueous solution based on the test instruction and detecting the flow speed of the stirred aqueous solution;
the ion capturing module is used for controlling a cathode and an anode in the oxidation-reduction electrode to capture ions in the stirred aqueous solution based on the flow speed of the aqueous solution;
and the display module is used for converting the potential difference formed after the cathode and the anode capture the ions of the aqueous solution into an oxidation-reduction potential value in real time and displaying the oxidation-reduction potential value on the electronic display screen.
Preferably, the device for rapidly testing the oxidation-reduction potential value of the aqueous solution with the mechanical stirring function comprises a control module and a power supply module, wherein the control module comprises:
a device state detection unit for acquiring power-on state information of a test device, wherein the power-on state information includes powered-on and unpowered;
the instruction sending unit is used for sending a test instruction to the mechanical stirring device under the condition that the test device is electrified, and the mechanical stirring device is used for stirring the aqueous solution to be tested based on the test instruction;
the speed detection unit is used for detecting the water flow impacting the mechanical stirring device in real time through a water flow sensor attached to the mechanical stirring device and generating a pulse signal in direct proportion to the water flow speed;
the speed detection unit is also used for determining the frequency of the pulse signal for generating the water flow speed and converting the frequency into the corresponding aqueous solution flow speed.
Preferably, the device for rapidly testing the oxidation-reduction potential value of the aqueous solution with the mechanical stirring function comprises an ion capture module and a water storage tank, wherein the ion capture module comprises:
the speed comparison unit is used for comparing the detected flow speed of the aqueous solution with a preset flow speed;
the speed adjusting unit is used for judging that the mechanical stirring device is unqualified in stirring the aqueous solution if the detected flow speed of the aqueous solution is smaller than the preset flow speed, and adjusting the stirring speed of the mechanical stirring device until the detected flow speed of the aqueous solution is larger than or equal to the preset flow speed;
and the ion capturing unit is used for controlling the cathode and the anode in the oxidation-reduction electrode to capture the ions in the stirred aqueous solution when the flow speed of the aqueous solution is greater than or equal to the preset flow speed.
Preferably, the device for rapidly testing the oxidation-reduction potential value of the aqueous solution with the mechanical stirring comprises a display module and a control module, wherein the display module comprises:
an ion state detection unit for obtaining a dynamic equilibrium state between aqueous solution ions captured by a cathode and an anode in the redox electrode;
the potential difference detection unit is used for detecting the potential difference between the cathode and the anode in the oxidation-reduction electrode in real time after determining that the ions of the aqueous solution reach a dynamic equilibrium state, and obtaining a plurality of detection values;
the image drawing unit is used for drawing a time-potential difference two-dimensional coordinate graph by taking the detection time as an abscissa and the potential difference as an ordinate to obtain a potential difference change curve graph between a cathode and an anode in the redox electrode;
a maximum potential difference value determination unit for determining a maximum potential difference value between a cathode and an anode in the redox electrode based on the potential difference change profile;
the maximum potential difference value determining unit is further configured to convert the maximum potential difference value into an aqueous solution oxidation-reduction potential value according to a preset conversion rule.
Preferably, the device for rapidly testing the oxidation-reduction potential value of the aqueous solution with the mechanical stirring, which is used for displaying the obtained oxidation-reduction potential value of the aqueous solution on an electronic display screen, comprises:
the instruction sending unit is used for acquiring an oxidation-reduction potential value of the aqueous solution and sending an amplification control instruction to the signal amplification unit;
the signal amplification unit is used for inputting the obtained oxidation-reduction potential value of the aqueous solution into M input stage circuits according to the amplification control instruction, and sending an output signal of the first input stage circuit to a preset first gain stage circuit to obtain an amplification signal of the first gain stage circuit;
the signal amplification unit is further configured to add the amplified signal of the first gain stage circuit and the output signal of the second input stage circuit, and input the added signal to the preset second gain stage circuit until the output signal of the mth input stage circuit and the output signal of the preset M-1 th gain stage circuit are added to obtain a final oxidation-reduction potential value after the oxidation-reduction potential value of the aqueous solution is amplified.
Preferably, the device for rapidly testing the oxidation-reduction potential value of the aqueous solution with the mechanical stirring function, the signal amplification unit, further comprises:
the display unit is used for acquiring a final oxidation-reduction potential value after the oxidation-reduction potential value of the aqueous solution is amplified, and determining attribute information of the final oxidation-reduction potential value;
the display unit is also used for matching a target display mode from a preset display mode library based on the attribute information of the final oxidation-reduction potential value and transmitting the final oxidation-reduction potential value to the display screen unit;
and the display screen unit is used for reading the parameter to be displayed corresponding to the final oxidation-reduction potential value according to the target display mode, displaying the parameter to be displayed in a display area on the electronic display screen, and finishing displaying the oxidation-reduction potential value of the aqueous solution on the electronic display screen.
Preferably, the device for rapidly testing the oxidation-reduction potential value of the aqueous solution with the mechanical stirring comprises a display screen unit and a control unit, wherein the display screen unit comprises:
the ion removing unit is used for placing a cathode and an anode in an oxidation-reduction electrode corresponding to the rapid testing device for the oxidation-reduction potential value of the aqueous solution into a prepared deionized water solution, and calculating the current rotating speed of the mechanical stirring device according to the following formula:
wherein eta represents the current rotating speed of the mechanical stirring device; Δ L represents the arc length of rotation of a fixed point at the edge of the fan of the mechanical stirring device in unit time T; t represents a unit time length; pi is 3.14; d represents the diameter of the mechanical stirring device;
comparing the calculated current rotating speed of the mechanical stirring device with a preset rotating speed;
if the current rotating speed of the mechanical stirring device is less than the preset rotating speed, judging that the rotating speed of the current mechanical stirring device is unqualified, and adjusting the current rotating speed;
otherwise, controlling a mechanical stirring device to stir the deionized water solution based on the current rotating speed of the mechanical stirring device;
the ion removal unit is also used for observing a real-time numerical value of an oxidation-reduction potential value of the aqueous solution on the electronic display screen based on the stirring result;
the judgment unit is used for comparing the real-time numerical value of the oxidation-reduction potential value of the aqueous solution on the electronic display screen with a preset lowest display value;
if the real-time value is less than or equal to the preset lowest display value, the ion removal on the cathode and the anode in the oxidation-reduction electrode is judged to be finished;
otherwise, judging that ions on the cathode and the anode in the oxidation-reduction electrode are not completely removed, controlling a mechanical stirring device to accelerate the stirring speed until the real-time numerical value is less than or equal to the preset lowest display value, and completing the removal of the ions on the cathode and the anode in the oxidation-reduction electrode.
Preferably, the device for rapidly testing the oxidation-reduction potential value of the aqueous solution with the mechanical stirring function further comprises:
the data preparation unit is used for calculating the diffusion coefficient of ions in the aqueous solution and calculating the time length value for testing the oxidation-reduction potential value of the aqueous solution according to the diffusion coefficient of the ions, and the data preparation unit specifically comprises the following steps:
a second calculation unit for calculating the diffusion coefficient of ions in the aqueous solution according to the following formula:
wherein β represents the diffusion coefficient of ions in an aqueous solution and has a unit of m2S; γ represents a solubility coefficient of the aqueous solution; k represents the mass value of the aqueous solution; μ represents the viscosity number of the aqueous solution; v represents the value of the self-movement velocity of ions in the aqueous solution; p represents the stirring power value of the mechanical stirring device; g is 9.8m/s2(ii) a F represents a resistance value for hindering the stirring of the mechanical stirring device;
a third calculation unit for calculating a length of time taken for the oxidation-reduction potential value of the test aqueous solution according to the following formula:
wherein T represents a length of time taken to test an oxidation-reduction potential value of the aqueous solution;
the ion quantity value which is required to be adsorbed when the anode in the oxidation-reduction electrode reaches an ion saturation state is represented; omega represents the ion quantity value which needs to be adsorbed when the cathode in the oxidation-reduction electrode reaches an ion saturation state; v represents the final motion speed value of ions in the aqueous solution under the influence of a mechanical stirring device; s represents the sum of the surface areas of the cathode and the anode which can be used for adsorbing ions in the redox electrode;
the comparison unit is used for comparing the time length value obtained by calculation with a preset time length value;
if the calculated time length value is less than or equal to the preset time length value, judging that the requirement of quickly testing the oxidation-reduction potential value of the aqueous solution is met;
otherwise, judging that the requirement for rapidly testing the oxidation-reduction potential value of the aqueous solution is not met, and controlling a mechanical stirring device to increase the stirring power to improve the diffusion coefficient of ions in the aqueous solution until the calculated time length value is less than or equal to the preset time length value.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of an apparatus for rapidly testing an oxidation-reduction potential value of an aqueous solution with mechanical agitation according to an embodiment of the present invention;
FIG. 2 is a diagram illustrating an internal structure of a control module of a rapid testing apparatus for oxidation-reduction potential of an aqueous solution with mechanical stirring according to an embodiment of the present invention;
fig. 3 is an internal structural diagram of a potential value determination module in an aqueous solution oxidation-reduction potential value rapid test apparatus with mechanical stirring in an embodiment of the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Example 1:
this example provides a device for rapidly testing the oxidation-reduction potential value of an aqueous solution with mechanical stirring, as shown in fig. 1, comprising:
the control module is used for controlling the mechanical stirring device to stir the aqueous solution based on the test instruction and detecting the flow speed of the stirred aqueous solution;
the ion capturing module is used for controlling a cathode and an anode in the oxidation-reduction electrode to capture ions in the stirred aqueous solution based on the flow speed of the aqueous solution;
and the display module is used for converting the potential difference formed after the cathode and the anode capture the ions of the aqueous solution into an oxidation-reduction potential value in real time and displaying the oxidation-reduction potential value on the electronic display screen.
In this embodiment, the trapping of the ions in the stirred aqueous solution by the cathode and the anode means that the ions in the aqueous solution are adsorbed by the cathode and the anode in the redox electrode, respectively, to form a potential difference.
In this embodiment, controlling the cathode and the anode of the redox electrode to capture ions in the agitated aqueous solution further comprises detecting in real time whether ions between the cathode and the anode reach a dynamic equilibrium.
In this embodiment, the real-time conversion of the potential difference formed after the ions in the aqueous solution are captured by the cathode and the anode into the oxidation-reduction potential value means that after the ions captured by the cathode and the anode in the oxidation-reduction electrode reach dynamic equilibrium, a voltage difference is formed between the cathode and the anode, and the voltage difference is used as a conversion basis for the oxidation-reduction potential value of the aqueous solution.
The beneficial effects of the above technical scheme are: the flow speed of the aqueous solution is accelerated by the mechanical stirring device, the time of capturing ions by the redox electrode is shortened, and the rapid test of the redox potential value of the aqueous solution is realized.
Example 2:
on the basis of the above embodiment 1, this embodiment provides a device for rapidly testing the oxidation-reduction potential value of an aqueous solution with mechanical stirring, as shown in fig. 2, the control module includes:
a device state detection unit for acquiring power-on state information of a test device, wherein the power-on state information includes powered-on and unpowered;
the instruction sending unit is used for sending a test instruction to the mechanical stirring device under the condition that the test device is electrified, and the mechanical stirring device is used for stirring the aqueous solution to be tested based on the test instruction;
the speed detection unit is used for detecting the water flow impacting the mechanical stirring device in real time through a water flow sensor attached to the mechanical stirring device and generating a pulse signal in direct proportion to the water flow speed;
the speed detection unit is also used for determining the frequency of the pulse signal for generating the water flow speed and converting the frequency into the corresponding aqueous solution flow speed.
In this embodiment, the pulse signal proportional to the water flow velocity means that the strength of the water flow impacting the sensor is displayed by an electronic signal through the water flow sensor, so as to accurately obtain the current flow velocity of the aqueous solution.
The beneficial effects of the above technical scheme are: the mechanical stirring device is controlled to stir the aqueous solution, and the flow speed of the stirred aqueous solution is detected, so that whether the flow speed of the current aqueous solution can meet the requirement of shortening the detection time or not is accurately judged, and convenience is provided for quickly detecting the oxidation-reduction potential value of the aqueous solution.
Example 3:
4. on the basis of the foregoing embodiment 1, the present embodiment provides a device for rapidly testing an oxidation-reduction potential value of an aqueous solution with mechanical stirring, the device including an ion capture module, the ion capture module including:
the speed comparison unit is used for comparing the detected flow speed of the aqueous solution with a preset flow speed;
the speed adjusting unit is used for judging that the mechanical stirring device is unqualified in stirring the aqueous solution if the detected flow speed of the aqueous solution is smaller than the preset flow speed, and adjusting the stirring speed of the mechanical stirring device until the detected flow speed of the aqueous solution is larger than or equal to the preset flow speed;
and the ion capturing unit is used for controlling the cathode and the anode in the oxidation-reduction electrode to capture the ions in the stirred aqueous solution when the flow speed of the aqueous solution is greater than or equal to the preset flow speed.
In this embodiment, the preset flow rate is set in advance, and is used to determine whether the current flow rate of the aqueous solution after being stirred by the mechanical stirring device can meet the requirement of rapidly capturing ions.
The beneficial effects of the above technical scheme are: by judging whether the flow speed of the aqueous solution meets the preset requirement or not, the cathode and the anode in the redox electrode can be conveniently controlled to rapidly capture ions in the aqueous solution, and the time for capturing the ions is shortened, so that the rapid detection of the redox potential value of the aqueous solution is realized.
Example 4:
on the basis of the above embodiment 1, this embodiment provides a device for rapidly testing the oxidation-reduction potential value of an aqueous solution with mechanical stirring, as shown in fig. 3, a display module comprising:
an ion state detection unit for obtaining a dynamic equilibrium state between aqueous solution ions captured by a cathode and an anode in the redox electrode;
the potential difference detection unit is used for detecting the potential difference between the cathode and the anode in the oxidation-reduction electrode in real time after determining that the ions of the aqueous solution reach a dynamic equilibrium state, and obtaining a plurality of detection values;
the image drawing unit is used for drawing a time-potential difference two-dimensional coordinate graph by taking the detection time as an abscissa and the potential difference as an ordinate to obtain a potential difference change curve graph between a cathode and an anode in the redox electrode;
a maximum potential difference value determination unit for determining a maximum potential difference value between a cathode and an anode in the redox electrode based on the potential difference change profile;
the maximum potential difference value determining unit is further configured to convert the maximum potential difference value into an aqueous solution oxidation-reduction potential value according to a preset conversion rule.
In this embodiment, the dynamic equilibrium state means that the ions captured by the anode and the cathode have reached a relative equilibrium, i.e. the amount of ions adsorbed on the cathode and the anode does not vary too much.
In this embodiment, the predetermined conversion rule is set in advance, and the value of the oxidation-reduction potential between the cathode and the anode can be obtained by physical means or a physical calculation formula, for example.
In this embodiment, the potential difference between the cathode and the anode in the redox electrode is due to a voltage difference formed after the cathode and the anode capture ions of different electric properties in the redox electrode, that is, the voltage difference is the potential difference between the cathode and the anode.
The beneficial effects of the above technical scheme are: the maximum potential difference value formed by the anode and the cathode under the condition of capturing different ions is determined, so that the finally obtained oxidation-reduction potential value of the aqueous solution is ensured to be obtained when the cathode and the anode ions in the oxidation-reduction electrode reach a dynamic balance state, and the accuracy of potential value detection is improved.
Example 5:
on the basis of the above embodiment 4, this embodiment provides a device for rapidly testing an oxidation-reduction potential value of an aqueous solution with mechanical stirring, and a display module, configured to display the obtained oxidation-reduction potential value of the aqueous solution on an electronic display screen, includes:
the instruction sending unit is used for acquiring an oxidation-reduction potential value of the aqueous solution and sending an amplification control instruction to the signal amplification unit;
the signal amplification unit is used for inputting the obtained oxidation-reduction potential value of the aqueous solution into M input stage circuits according to the amplification control instruction, and sending an output signal of the first input stage circuit to a preset first gain stage circuit to obtain an amplification signal of the first gain stage circuit;
the signal amplification unit is further configured to add the amplified signal of the first gain stage circuit and the output signal of the second input stage circuit, and input the added signal to the preset second gain stage circuit until the output signal of the mth input stage circuit and the output signal of the preset M-1 th gain stage circuit are added to obtain a final oxidation-reduction potential value after the oxidation-reduction potential value of the aqueous solution is amplified.
In the embodiment, the amplification control command is generated by the command sending unit and sent to the signal amplification circuit, and the signal amplification circuit is controlled to amplify the oxidation-reduction potential value of the aqueous solution, so that the oxidation-reduction potential value of the aqueous solution can be conveniently displayed on the electronic display screen.
In this embodiment, the input stage circuit refers to a circuit for receiving and switching an oxidation-reduction potential value signal before inputting the signal into the amplifying circuit, and the circuit can preprocess the oxidation-reduction potential value and then transmit the preprocessed data to the gain stage circuit, where the preprocessing may be format change or the like.
In this embodiment, the gain stage circuit is a circuit for amplifying the oxidation-reduction potential value, and is set in advance.
The beneficial effects of the above technical scheme are: the obtained oxidation-reduction potential value of the aqueous solution is amplified by the gain stage circuit, so that the oxidation-reduction potential value of the aqueous solution is conveniently eliminated and displayed on an electronic display screen, and the practicability of the rapid test of the oxidation-reduction potential value of the aqueous solution is improved.
Example 6:
on the basis of the above embodiment 5, this embodiment provides a device for rapidly testing an oxidation-reduction potential value of an aqueous solution with mechanical stirring, and the signal amplification unit further includes:
the display unit is used for acquiring a final oxidation-reduction potential value after the oxidation-reduction potential value of the aqueous solution is amplified, and determining attribute information of the final oxidation-reduction potential value;
the display unit is also used for matching a target display mode from a preset display mode library based on the attribute information of the final oxidation-reduction potential value and transmitting the final oxidation-reduction potential value to the display screen unit;
and the display screen unit is used for reading the parameter to be displayed corresponding to the final oxidation-reduction potential value according to the target display mode, displaying the parameter to be displayed in a display area on the electronic display screen, and finishing displaying the oxidation-reduction potential value of the aqueous solution on the electronic display screen.
In this embodiment, the attribute information of the final oxidation-reduction potential value refers to the data format, the data type, and the display requirement required for display corresponding to the oxidation-reduction potential value.
In this embodiment, the preset display mode library is set in advance, and the display modes corresponding to a plurality of data are stored inside, for example, blinking display, continuous display, and the like.
In this embodiment, the target display mode refers to a display mode selected from a preset display mode library and suitable for the redox potential value to be displayed, and is unique.
In this embodiment, the parameter to be displayed refers to a specific display value corresponding to the oxidation-reduction potential value of the aqueous solution, for example, 5, 6, etc. are displayed.
The beneficial effects of the above technical scheme are: by acquiring the attribute information of the oxidation-reduction potential value of the aqueous solution and matching the oxidation-reduction potential value of the aqueous solution with a corresponding display mode according to the attribute information, the oxidation-reduction potential value of the aqueous solution is accurately displayed on an electronic display screen, and the rapid test of the oxidation-reduction potential value of the aqueous solution is realized.
Example 7:
on the basis of the above embodiment 6, this embodiment provides a device for rapidly testing the oxidation-reduction potential value of an aqueous solution with mechanical stirring, and a display screen unit includes:
the ion removing unit is used for placing a cathode and an anode in an oxidation-reduction electrode corresponding to the rapid testing device for the oxidation-reduction potential value of the aqueous solution into a prepared deionized water solution, and calculating the current rotating speed of the mechanical stirring device according to the following formula:
wherein eta represents the current rotating speed of the mechanical stirring device; Δ L represents the arc length of rotation of a fixed point at the edge of the fan of the mechanical stirring device in unit time T; t represents a unit time length; pi is 3.14; d represents the diameter of the mechanical stirring device;
comparing the calculated current rotating speed of the mechanical stirring device with a preset rotating speed;
if the current rotating speed of the mechanical stirring device is less than the preset rotating speed, judging that the rotating speed of the current mechanical stirring device is unqualified, and adjusting the current rotating speed;
otherwise, controlling a mechanical stirring device to stir the deionized water solution based on the current rotating speed of the mechanical stirring device;
the ion removal unit is also used for observing a real-time numerical value of an oxidation-reduction potential value of the aqueous solution on the electronic display screen based on the stirring result;
the judgment unit is used for comparing the real-time numerical value of the oxidation-reduction potential value of the aqueous solution on the electronic display screen with a preset lowest display value;
if the real-time value is less than or equal to the preset lowest display value, the ion removal on the cathode and the anode in the oxidation-reduction electrode is judged to be finished;
otherwise, judging that ions on the cathode and the anode in the oxidation-reduction electrode are not completely removed, controlling a mechanical stirring device to accelerate the stirring speed until the real-time numerical value is less than or equal to the preset lowest display value, and completing the removal of the ions on the cathode and the anode in the oxidation-reduction electrode.
In this embodiment, the pre-prepared deionized water solution is set in advance for eliminating ions on the cathode and the anode in the aqueous redox electrode, and the deionized water solution is a chemical solution.
In this embodiment, the preset rotation speed is set in advance, and is used to determine whether the rotation speed of the mechanical stirring device for stirring the aqueous solution is qualified.
In this embodiment, the real-time value of the oxidation-reduction potential value of the aqueous solution on the electronic display screen means that the test device is placed in the deionized water solution, the display value on the electronic display screen gradually decreases as ions on the anode and the cathode disappear, and the real-time value means the oxidation-reduction potential value currently displayed on the electronic display screen at any moment.
In this embodiment, the preset minimum display value is set in advance and obtained through a plurality of training, that is, when the preset minimum display value is reached, it can be determined that the removal of ions on the cathode and the anode is completed.
The beneficial effects of the above technical scheme are: whether the water solution is effectively stirred or not is judged by detecting the rotating speed of the mechanical stirring device, and meanwhile, ions on the cathode and the anode of the testing device are quickly removed based on the stirring result, so that the ion removal time is shortened, and the device is improved to quickly finish detection and cleaning work.
Example 8:
on the basis of the foregoing embodiment 1, this embodiment provides a device for rapidly testing an oxidation-reduction potential value of an aqueous solution with mechanical stirring, and a display module, further includes:
the data preparation unit is used for calculating the diffusion coefficient of ions in the aqueous solution and calculating the time length value for testing the oxidation-reduction potential value of the aqueous solution according to the diffusion coefficient of the ions, and the data preparation unit specifically comprises the following steps:
a second calculation unit for calculating the diffusion coefficient of ions in the aqueous solution according to the following formula:
wherein β represents the diffusion coefficient of ions in an aqueous solution and has a unit of m2S; γ represents a solubility coefficient of the aqueous solution; k represents the mass value of the aqueous solution; μ represents the viscosity number of the aqueous solution; v represents the value of the self-movement velocity of ions in the aqueous solution; p represents the stirring power value of the mechanical stirring device; g is 9.8m/s2(ii) a F represents a resistance value for hindering the stirring of the mechanical stirring device;
a third calculation unit for calculating a length of time taken for the oxidation-reduction potential value of the test aqueous solution according to the following formula:
wherein T represents a length of time taken to test an oxidation-reduction potential value of the aqueous solution;
the ion quantity value which is required to be adsorbed when the anode in the oxidation-reduction electrode reaches an ion saturation state is represented; omega represents the ion quantity value which needs to be adsorbed when the cathode in the oxidation-reduction electrode reaches an ion saturation state; v represents the final motion speed value of ions in the aqueous solution under the influence of a mechanical stirring device; s represents the sum of the surface areas of the cathode and the anode which can be used for adsorbing ions in the redox electrode;
the comparison unit is used for comparing the time length value obtained by calculation with a preset time length value;
if the calculated time length value is less than or equal to the preset time length value, judging that the requirement of quickly testing the oxidation-reduction potential value of the aqueous solution is met;
otherwise, judging that the requirement for rapidly testing the oxidation-reduction potential value of the aqueous solution is not met, and controlling a mechanical stirring device to increase the stirring power to improve the diffusion coefficient of ions in the aqueous solution until the calculated time length value is less than or equal to the preset time length value.
In this embodiment, the diffusion coefficient is used to measure the moving speed of ions in the aqueous solution, and the larger the diffusion coefficient, the larger the moving speed of ions in the aqueous solution.
In this embodiment, the dissolution coefficient refers to a value of an ability of an aqueous solution to dissolve a substance, and the stronger the ability to dissolve the substance, the higher the dissolution coefficient, and the dissolution coefficient is dimensionless.
In this example, the viscosity number is expressed in kg.s/m2。
In this embodiment, the amount of ions adsorbed by the anode and the cathode is manually set in advance, for example, when the amount of adsorbed ions reaches 10000, it is proved that the state of saturation is reached, and the oxidation-reduction potential value can be tested.
In this embodiment, the final moving speed value of the ions in the aqueous solution under the influence of the mechanical stirring device refers to the moving speed of the ions in the static aqueous solution plus the influence of the mechanical stirring device on the moving speed of the ions, so that the ions reach the final moving speed in the aqueous solution.
In this embodiment, the preset time length is set in advance, and is used to determine whether the time taken for the testing device to detect the oxidation-reduction potential value of the aqueous solution meets the requirement.
The beneficial effects of the above technical scheme are: the time length value used by the detection device for detecting the oxidation-reduction potential value is calculated by calculating the diffusion coefficient of ions in the aqueous solution, the diffusion coefficient is calculated, the viscosity of the aqueous solution, the quality of the aqueous solution and the self-movement speed of the ions in the aqueous solution are related, meanwhile, the influence of a mechanical stirring device on the movement of the ions in the aqueous solution is included, the result obtained by final calculation is accurate and reliable, the ratio of the number of ions adsorbed by a cathode and an anode to the speed of the ions under the influence of the mechanical stirring device is related, and the calculation result is scientific and reliable due to the influence of the diffusion coefficient and the area of the cathode and the anode on the number of the adsorbed ions.
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 (4)
1. A device for rapidly testing the oxidation-reduction potential value of an aqueous solution with mechanical stirring is characterized by comprising:
the control module is used for controlling the mechanical stirring device to stir the aqueous solution based on the test instruction and detecting the flow speed of the stirred aqueous solution;
the ion capturing module is used for controlling a cathode and an anode in the oxidation-reduction electrode to capture ions in the stirred aqueous solution based on the flow speed of the aqueous solution;
the display module is used for converting the potential difference formed after the cathode and the anode capture the ions of the aqueous solution into an oxidation-reduction potential value in real time and displaying the oxidation-reduction potential value on the electronic display screen;
wherein, the control module includes:
a device state detection unit for acquiring power-on state information of a test device, wherein the power-on state information includes powered-on and unpowered;
the instruction sending unit is used for sending a test instruction to the mechanical stirring device under the condition that the test device is electrified, and the mechanical stirring device is used for stirring the aqueous solution to be tested based on the test instruction;
the speed detection unit is used for detecting the water flow impacting the mechanical stirring device in real time through a water flow sensor attached to the mechanical stirring device and generating a pulse signal in direct proportion to the water flow speed;
the speed detection unit is also used for determining the frequency of a pulse signal for generating the water flow speed and converting the frequency into a corresponding aqueous solution flow speed;
wherein the ion trapping module comprises:
the speed comparison unit is used for comparing the detected flow speed of the aqueous solution with a preset flow speed;
the speed adjusting unit is used for judging that the mechanical stirring device is unqualified in stirring the aqueous solution if the detected flow speed of the aqueous solution is smaller than the preset flow speed, and adjusting the stirring speed of the mechanical stirring device until the detected flow speed of the aqueous solution is larger than or equal to the preset flow speed;
the ion capturing unit is used for controlling the cathode and the anode in the oxidation-reduction electrode to capture ions in the stirred aqueous solution when the flow speed of the aqueous solution is greater than or equal to the preset flow speed;
wherein, the display module includes:
an ion state detection unit for obtaining a dynamic equilibrium state between aqueous solution ions captured by a cathode and an anode in the redox electrode;
the potential difference detection unit is used for detecting the potential difference between the cathode and the anode in the oxidation-reduction electrode in real time after determining that the ions of the aqueous solution reach a dynamic equilibrium state, and obtaining a plurality of detection values;
the image drawing unit is used for drawing a time-potential difference two-dimensional coordinate graph by taking the detection time as an abscissa and the potential difference as an ordinate to obtain a potential difference change curve graph between a cathode and an anode in the redox electrode;
a maximum potential difference value determination unit for determining a maximum potential difference value between a cathode and an anode in the redox electrode based on the potential difference change profile;
the maximum potential difference value determining unit is further used for converting the maximum potential difference value into an aqueous solution oxidation-reduction potential value according to a preset conversion rule;
wherein, the display module still includes: a display screen unit;
wherein the display screen unit includes:
the ion removing unit is used for placing a cathode and an anode in an oxidation-reduction electrode corresponding to the rapid testing device for the oxidation-reduction potential value of the aqueous solution into a prepared deionized water solution, and calculating the current rotating speed of the mechanical stirring device according to the following formula:
wherein the content of the first and second substances,
representing the current rotation speed of the mechanical stirring device;
indicating a fixed point of the edge of the fan of the mechanical stirring device in unit time
The arc length of the inner rotation;
represents a unit time length;
taking 3.14;
represents the diameter of the mechanical stirring device;
comparing the calculated current rotating speed of the mechanical stirring device with a preset rotating speed;
if the current rotating speed of the mechanical stirring device is less than the preset rotating speed, judging that the rotating speed of the current mechanical stirring device is unqualified, and adjusting the current rotating speed;
otherwise, controlling a mechanical stirring device to stir the deionized water solution based on the current rotating speed of the mechanical stirring device;
the ion removal unit is also used for observing a real-time numerical value of an oxidation-reduction potential value of the aqueous solution on the electronic display screen based on the stirring result;
the judgment unit is used for comparing the real-time numerical value of the oxidation-reduction potential value of the aqueous solution on the electronic display screen with a preset lowest display value;
if the real-time value is less than or equal to the preset lowest display value, the ion removal on the cathode and the anode in the oxidation-reduction electrode is judged to be finished;
otherwise, judging that ions on the cathode and the anode in the oxidation-reduction electrode are not completely removed, controlling a mechanical stirring device to accelerate the stirring speed until the real-time numerical value is less than or equal to the preset lowest display value, and completing the removal of the ions on the cathode and the anode in the oxidation-reduction electrode.
2. The apparatus for rapidly testing the oxidation-reduction potential value of an aqueous solution with mechanical stirring as set forth in claim 1, wherein the display module further comprises:
the instruction sending unit is used for acquiring an oxidation-reduction potential value of the aqueous solution and sending an amplification control instruction to the signal amplification unit;
the signal amplification unit is used for inputting the obtained oxidation-reduction potential value of the aqueous solution into M input stage circuits according to the amplification control instruction, and sending an output signal of the first input stage circuit to a preset first gain stage circuit to obtain an amplification signal of the first gain stage circuit;
the signal amplification unit is further configured to add the amplified signal of the first gain stage circuit and the output signal of the second input stage circuit, and input the added signal to the preset second gain stage circuit until the output signal of the mth input stage circuit and the output signal of the preset M-1 th gain stage circuit are added to obtain a final oxidation-reduction potential value after the oxidation-reduction potential value of the aqueous solution is amplified.
3. The apparatus for rapidly testing the oxidation-reduction potential value of an aqueous solution with mechanical stirring according to claim 2, wherein the signal amplification unit further comprises:
the display unit is used for acquiring a final oxidation-reduction potential value after the oxidation-reduction potential value of the aqueous solution is amplified, and determining attribute information of the final oxidation-reduction potential value;
the display unit is also used for matching a target display mode from a preset display mode library based on the attribute information of the final oxidation-reduction potential value and transmitting the final oxidation-reduction potential value to the display screen unit;
and the display screen unit is used for reading the parameter to be displayed corresponding to the final oxidation-reduction potential value according to the target display mode, displaying the parameter to be displayed in a display area on the electronic display screen, and finishing displaying the oxidation-reduction potential value of the aqueous solution on the electronic display screen.
4. The apparatus for rapidly testing the oxidation-reduction potential value of an aqueous solution with mechanical stirring according to claim 1, wherein the display module further comprises:
the data preparation unit is used for calculating the diffusion coefficient of ions in the aqueous solution and calculating the time length value for testing the oxidation-reduction potential value of the aqueous solution according to the diffusion coefficient of the ions, and the data preparation unit specifically comprises the following steps:
a second calculation unit for calculating the diffusion coefficient of ions in the aqueous solution according to the following formula:
wherein the content of the first and second substances,
represents the diffusion coefficient of ions in an aqueous solution in units of
；
Represents the solubility coefficient of the aqueous solution;
representing a mass value of the aqueous solution;
represents the viscosity value of the aqueous solution;
representing the self-movement speed value of ions in the aqueous solution;
indicating machineThe stirring power value of the mechanical stirring device;
get 9.8
；
A resistance value indicating resistance against stirring by the mechanical stirring device;
a third calculation unit for calculating a length of time taken for the oxidation-reduction potential value of the test aqueous solution according to the following formula:
wherein the content of the first and second substances,
a value representing the length of time taken to test the value of the redox potential of the aqueous solution;
the ion quantity value which is required to be adsorbed when the anode in the oxidation-reduction electrode reaches an ion saturation state is represented;
the ion quantity value which is required to be adsorbed when the cathode in the oxidation-reduction electrode reaches an ion saturation state is represented;
representing the final motion speed value of ions in the aqueous solution under the influence of a mechanical stirring device;
represents the sum of the surface areas of the cathode and anode available for adsorption of ions in the redox electrode;
the comparison unit is used for comparing the time length value obtained by calculation with a preset time length value;
if the calculated time length value is less than or equal to the preset time length value, judging that the requirement of quickly testing the oxidation-reduction potential value of the aqueous solution is met;
otherwise, judging that the requirement for rapidly testing the oxidation-reduction potential value of the aqueous solution is not met, and controlling a mechanical stirring device to increase the stirring power to improve the diffusion coefficient of ions in the aqueous solution until the calculated time length value is less than or equal to the preset time length value.
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