CN112484810A - Solution detection device and method - Google Patents
Solution detection device and method Download PDFInfo
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- CN112484810A CN112484810A CN202011404431.6A CN202011404431A CN112484810A CN 112484810 A CN112484810 A CN 112484810A CN 202011404431 A CN202011404431 A CN 202011404431A CN 112484810 A CN112484810 A CN 112484810A
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- 238000001514 detection method Methods 0.000 title claims abstract description 127
- 238000000034 method Methods 0.000 title claims description 20
- 239000007788 liquid Substances 0.000 claims abstract description 133
- 238000012545 processing Methods 0.000 claims abstract description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 31
- 238000012360 testing method Methods 0.000 claims description 7
- 239000008400 supply water Substances 0.000 claims description 3
- 230000035945 sensitivity Effects 0.000 abstract description 8
- 230000008859 change Effects 0.000 description 6
- 239000003990 capacitor Substances 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
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- 238000010586 diagram Methods 0.000 description 2
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- 238000013519 translation Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
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- 238000005516 engineering process Methods 0.000 description 1
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- 230000002035 prolonged effect Effects 0.000 description 1
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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
- G01F23/22—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 by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/26—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 by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields
- G01F23/263—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 by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields by measuring variations in capacitance of capacitors
Abstract
The embodiment of the invention discloses a solution detection device and a solution detection method. The solution detection device comprises: a first electrode plate; the liquid level detection device is positioned on the outer side wall of the container to be detected and between the first liquid level of the container to be detected and the opening position of the container to be detected; a second electrode plate; the liquid level detection device is positioned on the outer side wall of the container to be detected and between the first liquid level of the container to be detected and the bottom of the container to be detected; the processing unit is electrically connected with the first electrode plate and the second electrode plate respectively and used for determining whether the real-time liquid level of the container to be detected is within a preset liquid level range or not according to the detection capacitance of the first electrode plate and the detection capacitance of the second electrode plate; the area of the vertical projection of the first electrode plate on the outer side wall of the container to be detected is the same as that of the vertical projection of the second electrode plate on the outer side wall of the container to be detected. The accuracy of capacitance detection solution liquid level is improved, the interference of temperature and humidity in the environment is reduced, and the detection sensitivity is improved.
Description
Technical Field
The embodiment of the invention relates to a liquid level detection technology, in particular to a solution detection device and method.
Background
With the continuous improvement of the industrialization level, new requirements are continuously put forward on the detection means of the liquid level height, for the scene needing to detect the solution, the advantages of no need of contacting with the solution, corrosion resistance and no need of an additional structure are utilized by using capacitance detection, and the main method of the traditional solution detection comprises the steps of adopting single-path capacitance detection, having high detection sensitivity, being easily interfered, and having larger influences on temperature and humidity; the method also comprises the step of adopting a single-path differential capacitor for detection, and has the advantages of better anti-interference performance, low detection sensitivity and larger influence on temperature and humidity. At present, the traditional detection means can not meet the development requirements, and the research, development and application of the solution detection method which has high detection sensitivity, strong anti-interference performance and small influence by the environment such as temperature, humidity and the like are more urgent.
Disclosure of Invention
The embodiment of the invention provides a solution detection device and method, which aim to realize the accuracy of capacitance detection of the solution level, reduce the interference of temperature and humidity in the environment and improve the detection sensitivity.
In a first aspect, an embodiment of the present invention provides a solution detection apparatus, including:
a first electrode plate; the liquid level detection device is positioned on the outer side wall of a container to be detected and between the first liquid level of the container to be detected and the opening position of the container to be detected;
a second electrode plate; the liquid level detection device is positioned on the outer side wall of the container to be detected and between the first liquid level of the container to be detected and the bottom of the container to be detected;
the processing module is used for determining whether the real-time liquid level of the container to be detected is within a preset liquid level range according to the detection capacitance of the first electrode plate and the detection capacitance of the second electrode plate;
the area of the vertical projection of the first electrode plate on the outer side wall of the container to be detected is the same as that of the vertical projection of the second electrode plate on the outer side wall of the container to be detected.
Optionally, the first electrode plate and the second electrode plate are parallel and have the same area; the first electrode plate and the second electrode plate are identical in shape.
Optionally, the first electrode plate and the second electrode are both attached to the outer side wall of the container to be detected.
Optionally, the vertical projection of the second electrode plate on the outer side wall of the container to be detected covers the preset liquid level range.
Optionally, the processing unit is configured to determine that the real-time liquid level of the container to be detected is within a preset liquid level range when an absolute value of a difference between the detection capacitance of the first electrode plate and the detection capacitance of the second electrode plate is within a preset threshold range.
Optionally, the solution detection device further comprises an alarm unit; the processing unit is connected with the alarm unit; when the real-time liquid level of the container to be detected exceeds the maximum value of the preset liquid level range, a first prompt signal is sent to the alarm unit; and when the real-time liquid level of the container to be detected is lower than the minimum value of the preset liquid level range, sending a second prompt signal to the alarm unit.
Optionally, the solution detection device further comprises a water supply unit; the processing unit is connected with the water supply unit; the processing unit is used for sending a first prompt signal to the water supply unit when the real-time liquid level of the container to be detected exceeds the maximum value of the preset liquid level range so as to instruct the water supply unit to stop supplying water; and the processing unit is used for sending a second prompt signal to the water supply unit when the real-time liquid level of the container to be detected is lower than the minimum value of the preset liquid level range so as to indicate the water supply unit to supply water.
In a second aspect, an embodiment of the present invention further provides a solution detection method, which is applicable to any one of the solution detection apparatuses, where the method includes:
acquiring the detection capacitance of the first electrode plate;
acquiring the detection capacitance of the second electrode plate;
and determining whether the real-time liquid level of the container to be detected is within a preset liquid level range according to the detection capacitance of the first electrode plate and the detection capacitance of the second electrode plate.
Optionally, determining whether the real-time liquid level of the container to be detected is within a preset liquid level range according to the detection capacitance of the first electrode plate and the detection capacitance of the second electrode plate includes:
and if the absolute value of the difference value between the detection capacitance of the first electrode plate and the detection capacitance of the second electrode plate is within the preset threshold range, determining that the real-time liquid level of the container to be detected is within the preset liquid level range.
Optionally, after determining whether the real-time liquid level of the container to be detected is within a preset liquid level range according to the detection capacitance of the first electrode plate and the detection capacitance of the second electrode plate, the method further includes: sending a prompt signal according to the real-time liquid level of the container to be detected and the preset liquid level range;
the invention provides a solution detection device and a method, comprising a first electrode plate, a second electrode plate and a processing unit, wherein the first electrode plate is positioned on the outer side wall of a container to be detected and positioned between a first liquid level of the container to be detected and an opening position of the container to be detected, the second electrode plate is positioned on the outer side wall of the container to be detected and positioned between the first liquid level of the container to be detected and the bottom of the container to be detected, the first electrode plate and the second electrode plate are positioned at different positions to reduce the interference of temperature and humidity in the environment, the first electrode plate is positioned between the first liquid level and the opening position of the container to be detected, so that the first electrode plate can carry out empty water detection, the second electrode plate carries out water detection, the interference of temperature and humidity is eliminated through the empty water detection of the first electrode plate, the interference of temperature and humidity is further avoided, in addition, the processing unit is respectively electrically connected with the first electrode plate and the second, a whether the real-time liquid level that is used for confirming to wait to detect the container according to the detection electric capacity of first plate electrode and second plate electrode is in predetermineeing the liquid level within range, above-mentioned solution detection device adopts two plate electrodes, two plate electrodes carry out single control respectively, avoid interference each other, the sensitivity of detection is higher, in addition, the vertical projection of first plate electrode on waiting to detect the lateral wall of container and the vertical projection's of second plate electrode on waiting to detect the lateral wall of container area the same, further avoid detection error, improve the accuracy that detects the solution liquid level.
Drawings
To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief description will be given below of the drawings required for the embodiments or the technical solutions in the prior art, and it is obvious that the drawings in the following description, although being some specific embodiments of the present invention, can be extended and extended to other structures and drawings by those skilled in the art according to the basic concepts of the device structure, the driving method and the manufacturing method disclosed and suggested by the various embodiments of the present invention, without making sure that these should be within the scope of the claims of the present invention.
Fig. 1 is a schematic structural diagram of a solution detection apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart of a solution detection method according to a second embodiment of the present invention;
fig. 3 is a schematic flow chart of another solution detection method according to the second embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described through embodiments with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the basic idea disclosed and suggested by the embodiments of the present invention, are within the scope of the present invention.
Example one
Fig. 1 is a schematic structural diagram of a solution detection device according to an embodiment of the present invention, and as shown in fig. 1, the embodiment of the present invention provides a solution detection device, including: a first electrode plate 101; is positioned on the outer side wall of the container 100 to be detected and is positioned between the first liquid level of the container 100 to be detected and the opening position of the container 100 to be detected; a second electrode plate 102; is positioned on the outer side wall of the container 100 to be detected and is positioned between the first liquid level of the container 100 to be detected and the bottom of the container 100 to be detected; the processing unit 103 is electrically connected with the first electrode plate 101 and the second electrode plate 102, respectively, and the processing unit 103 is configured to determine whether the real-time liquid level of the container 100 to be detected is within a preset liquid level range according to the detection capacitance of the first electrode plate 101 and the detection capacitance of the second electrode plate 102; the area of the vertical projection of the first electrode plate 101 on the outer side wall of the container 100 to be detected is the same as the area of the vertical projection of the second electrode plate 102 on the outer side wall of the container 100 to be detected.
The first electrode plate 101 is located between the first liquid level of the container 100 to be detected and the opening position of the container 100 to be detected, and the detection area of the first electrode plate 101 is always in a solution-free state. The second electrode plate 102 is located between the first liquid level of the container 100 to be tested and the bottom of the container 100 to be tested, and can detect the capacitance values of the solution in the container 100 to be tested at different liquid levels. The first liquid level is the position of the maximum amount of solution that the container 100 to be tested can contain, and as the solution level changes, the capacitance value detected by the second electrode plate 102 changes. First electrode board 101 is located different positions with second electrode board 102, reduces the interference of temperature and humidity in the environment, and first electrode board 101 carries out empty water and detects, and second electrode board 102 has made water and detects to further avoid the interference of temperature and humidity. The vertical projections of the first electrode plate 101 and the second electrode plate 102 on the outer side wall of the container 100 to be detected are the same, and it can be known from the capacitance formula that when the capacitance is detected, the difference exists between the capacitance value detected by the first electrode plate 101 and the capacitance value detected by the second electrode plate 102, and the difference is only caused by the difference of the solution levels at the positions. The first electrode plate 101 is used for detecting an environmental background value, and the capacitance value detected by the second electrode plate 102 includes the environmental background value, so that the capacitance value after the environmental background value is removed can eliminate the influence of the environments such as temperature and humidity, and the like, and further can accurately calculate whether the real-time liquid level of the container 100 to be detected is within a preset liquid level range.
The processing unit 103 may be a single chip or a capacitance detection chip, and is configured to receive the detection capacitance of the first electrode plate 101 and the detection capacitance of the second electrode plate 102, and determine whether the real-time liquid level of the container 100 to be detected is within a preset liquid level range according to the detection capacitance of the first electrode plate 101 and the detection capacitance of the second electrode plate 102.
Specifically, the processing unit 103 is electrically connected to the first electrode plate 101 and the second electrode plate 102, and is configured to determine whether the real-time liquid level of the container to be detected is within a preset liquid level range according to the detection capacitance of the first electrode plate 101 and the detection capacitance of the second electrode plate 102.
This technical scheme is through providing a solution detection device, including the first plate electrode, second plate electrode and processing unit, the empty water of first plate electrode detects, thereby further avoid the interference of temperature and humidity, in addition, processing unit is connected with first plate electrode and second plate electrode electricity respectively, a real-time liquid level that is used for confirming to wait to detect the container according to the detection electric capacity of first plate electrode and the detection electric capacity of second plate electrode is whether in predetermineeing the liquid level within range, first plate electrode and second plate electrode carry out one way control respectively, avoid mutual interference, the sensitivity of detection is higher, in addition, the vertical projection of first plate electrode on waiting to detect the lateral wall of container is the same with the vertical projection's of second plate electrode area on waiting to detect the lateral wall of container, further avoid detecting error, improve the accuracy of detecting the solution liquid level.
Optionally, the first electrode plate 101 and the second electrode plate 102 are parallel and have the same area; the first electrode plate 101 and the second electrode plate 102 have the same shape. The first electrode plate 101 and the second electrode plate 102 are parallel and have the same area, and the area of the vertical projection of the first electrode plate 101 on the outer side wall of the container 100 to be detected and the area of the vertical projection of the second electrode plate 102 on the outer side wall of the container 100 to be detected are the same.
The shapes and areas of the first electrode plate 101 and the second electrode plate 102 are controlled to be the same, so that the capacitance values of the first electrode plate 101 and the second electrode plate 102 detected under the condition that the container 100 to be detected is anhydrous are the same; when the detection environment has interference and the temperature and the humidity change, the first electrode plate 101 and the second electrode plate 102 detect that the capacitance offset is the same, the same change trend is presented, and the detection error is reduced.
The shape of first electrode board 101 and second electrode board 102 can be adjusted according to the shape of waiting to detect container 100, and is exemplary, if wait to detect container 100 and be cylindricly, first electrode board 101 and second electrode board 102 can be located flexible circuit board, buckle to the laminating is waited to detect the lateral wall of container 100, guarantees the accurate nature of detection.
Optionally, the first electrode plate 101 and the second electrode 102 are both attached to the outer sidewall of the container 100 to be detected.
The first electrode plate 101 and the second electrode plate 102 are both located on the outer side wall of the container 100 to be detected, and do not need to be in contact with a solution in the container 100 to be detected, so that the electrode plates are prevented from being damaged by a corrosive solution, and the service life is prolonged.
Optionally, the vertical projection of the second electrode plate 102 on the outer sidewall of the container 100 to be detected covers a preset liquid level range.
Wherein, the vertical projection of second electrode board 102 on waiting to detect the lateral wall of container 100 covers and predetermines the liquid level scope for second electrode board 102 can in time monitor and wait to detect the liquid level change of the interior solution of container 100, carries out real time monitoring, sends corresponding cue signal or makes corresponding control operation, guarantees to wait to detect the liquid level of the interior solution of container 100 in the reasonable scope of predetermineeing, effectively avoids detecting the error, improves the accuracy of testing result.
Optionally, the processing unit 103 is configured to determine that the real-time liquid level of the container 100 to be detected is within a preset liquid level range when an absolute value of a difference between the detection capacitance of the first electrode plate 101 and the detection capacitance of the second electrode plate 102 is within a preset threshold range.
Optionally, the solution detection apparatus further includes an alarm unit 104; the processing unit 103 is connected with the alarm unit 104; when the real-time liquid level of the container 100 to be detected exceeds the maximum value of the preset liquid level range, the processing unit 103 sends a first prompt signal to the alarm unit 104; when the real-time liquid level of the container 100 to be detected is lower than the minimum value of the preset liquid level range, the processing unit 103 sends a second prompt signal to the alarm unit 104.
For example, if the detection environment is not interfered and there is no temperature or humidity change, the capacitance value detected by the first electrode plate 101 is C11, and C11 is Ca 0. Here, Ca0 is the detection capacitance when no solution is present at the first electrode plate 101. The capacitance value detected by the second electrode plate 102 is C12. The difference value of the detection capacitances of the two electrode plates is D1 ═ C12-C11 ═ C12-Ca0 ═ C12-Cb 0. Where Cb0 is the detected capacitance when there is no solution at the second electrode plate 102. Since the area of the perpendicular projection of the first electrode plate on the outer side wall of the container 100 to be inspected is the same as the area of the perpendicular projection of the second electrode plate on the outer side wall of the container 100 to be inspected, Ca0 ═ Cb 0.
If the detection environment is disturbed and the temperature and humidity change, the capacitance value detected by the first electrode plate 101 is C21, and C21 is Ca0+ Cax. Where Cax is the amount of capacitance translation when there is no solution at the first electrode plate 101. The capacitance value detected by the second electrode plate 102 is C22. C22 ═ C12+ Cbx. Where Cbx is the amount of capacitance translation without solution at the second electrode plate 102. Since the area of the vertical projection of the first electrode plate on the outer sidewall of the container 100 to be tested is the same as the area of the vertical projection of the second electrode plate on the outer sidewall of the container 100 to be tested, Cax ═ Cbx. The difference value of the detection capacitances of the two electrode plates is D2 ═ C22-C21 ═ C12+ Cbx-Ca0-Cax ═ C12-Cb0 ═ D1.
According to the above analysis, it can be known that the difference between the detected capacitances of the two electrode plates is the same under different conditions, i.e., the solution level in the container 100 to be detected can be detected according to the difference between the capacitances detected by the two electrode plates by neglecting the influence of the environmental interference and the temperature and humidity changes. The detection capacitance of the first electrode plate 101 and the detection capacitance of the second electrode plate 102 are received and calculated by the processing unit 103, and if the absolute value of the difference between the detection capacitance of the first electrode plate 101 and the detection capacitance of the second electrode plate 102 is within the preset threshold range, it is determined that the real-time liquid level of the container 100 to be detected is within the preset liquid level range. If the real-time liquid level of the container 100 to be detected exceeds the maximum value of the preset liquid level range, the processing unit 103 sends a first prompt signal to the alarm unit 104 to instruct the alarm unit 104 to alarm. If the real-time liquid level of the container 100 to be detected is lower than the minimum value of the preset liquid level range, the processing unit 103 sends a second prompt signal to the alarm unit 104 to instruct the alarm unit 104 to alarm.
Further, the solution detection device further comprises a water supply unit 105; the processing unit 103 is connected with the water supply unit 105; the processing unit 103 is configured to send a first prompt signal to the water supply unit 105 to instruct the water supply unit 105 to stop supplying water when the real-time liquid level of the container 100 to be detected exceeds the maximum value of the preset liquid level range; the processing unit 103 is configured to send a second prompt signal to the water supply unit 105 to instruct the water supply unit 105 to supply water when the real-time liquid level of the container 100 to be detected is lower than the minimum value of the preset liquid level range.
The technical scheme of this embodiment, through mutually supporting of first plate electrode, second plate electrode, processing unit, alarm unit and water supply unit, the judgement and the control of waiting to examine the real-time liquid level of solution in the container of examining, effectively solved and adopted electric capacity to carry out the problem that is easily disturbed, temperature and humidity influence among the liquid level measurement process, reduce the error among the testing process, improve the degree of accuracy that detects.
Example two
Fig. 2 is a schematic flow chart of a solution detection method according to a second embodiment of the present invention, and as shown in fig. 2, a solution detection method is further provided according to a second embodiment of the present invention, and the technical solution of the present embodiment is applicable to any solution detection device condition of the above embodiments. The method may be performed by a solution detection device. The method specifically comprises the following steps:
s121, acquiring the detection capacitance of the first electrode plate;
s122, acquiring the detection capacitance of the second electrode plate;
s123, determining whether the real-time liquid level of the container to be detected is within a preset liquid level range according to the detection capacitance of the first electrode plate and the detection capacitance of the second electrode plate.
The first electrode plate is located the lateral wall of waiting to detect the container, and is located and waits to detect between the first liquid level of container and the opening position of waiting to detect the container, and the liquid level can not go up further rising to first electrode plate can carry out empty water and detect. The second electrode plate is located the lateral wall of waiting to detect the container, and is located and waits to detect between the first liquid level of container and the bottom of waiting to detect the container, can detect the capacitance value of waiting to detect solution when different real-time liquid levels in the container, has water to detect. Along with the change of the solution liquid level, the capacitance value detected by the second electrode plate changes. The first electrode plate and the second electrode plate are located at different positions, so that the interference of temperature and humidity in the environment is reduced, and meanwhile, the first electrode plate is used for detecting empty water to eliminate the interference of temperature and humidity, so that the interference of temperature and humidity is further avoided. Wherein, the vertical projection of first plate electrode and second plate electrode on waiting to detect the lateral wall of container is the same, can know by the electric capacity formula, when guaranteeing to detect electric capacity simultaneously, when the capacitance value that first plate electrode detected and the capacitance value that the second plate electrode detected exist the difference, only for the solution liquid level of position department of locating arouses for the difference that detection area is the same, further avoids detecting error, improves the accuracy that detects the solution liquid level. The detection capacitors of the first electrode plate and the second electrode plate can be obtained by an external processing unit, such as a single chip microcomputer, whether the real-time liquid level of a container to be detected is within a preset liquid level range or not can be accurately calculated, and the solution detection method is simple and convenient, high in detection sensitivity and accurate in detection result.
Fig. 3 is a schematic flow chart of another solution detection method according to a second embodiment of the present invention, as shown in fig. 3, optionally, determining whether a real-time liquid level of a container to be detected is within a preset liquid level range according to the detection capacitance of the first electrode plate and the detection capacitance of the second electrode plate includes:
and S124, if the absolute value of the difference value between the detection capacitor of the first electrode plate and the detection capacitor of the second electrode plate is within a preset threshold range, determining that the real-time liquid level of the container to be detected is within a preset liquid level range.
Optionally, after determining whether the real-time liquid level of the container to be detected is within the preset liquid level range according to the detection capacitance of the first electrode plate and the detection capacitance of the second electrode plate, the method further includes:
and S125, sending out a prompt signal according to the real-time liquid level and the preset liquid level range of the container to be detected.
Sending a prompt signal according to the real-time liquid level of the container to be detected and a preset liquid level range, wherein the prompt signal comprises sending a first prompt signal if the real-time liquid level of the container to be detected exceeds the maximum value of the preset liquid level range; and if the real-time liquid level of the container to be detected is lower than the minimum value of the preset liquid level range, sending a second prompt signal.
The solution detection method provided by the embodiment of the invention can be executed by the solution detection device provided by the embodiment of the invention, and has corresponding functional modules and beneficial effects of the execution method.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements, combinations and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A solution testing device, comprising:
a first electrode plate; the liquid level detection device is positioned on the outer side wall of a container to be detected and between the first liquid level of the container to be detected and the opening position of the container to be detected;
a second electrode plate; the liquid level detection device is positioned on the outer side wall of the container to be detected and between the first liquid level of the container to be detected and the bottom of the container to be detected;
the processing unit is electrically connected with the first electrode plate and the second electrode plate respectively; the processing unit is used for determining whether the real-time liquid level of the container to be detected is within a preset liquid level range according to the detection capacitance of the first electrode plate and the detection capacitance of the second electrode plate;
the area of the vertical projection of the first electrode plate on the outer side wall of the container to be detected is the same as that of the vertical projection of the second electrode plate on the outer side wall of the container to be detected.
2. The solution detecting device according to claim 1, wherein the first electrode plate and the second electrode plate are parallel and have the same area; the first electrode plate and the second electrode plate are identical in shape.
3. The solution testing device according to claim 1, wherein the first electrode plate and the second electrode are both attached to the outer sidewall of the container to be tested.
4. The solution detecting device according to claim 1, wherein a vertical projection of the second electrode plate on an outer sidewall of the container to be detected covers the preset liquid level range.
5. The solution detection device according to claim 1, wherein the processing unit determines that the real-time liquid level of the container to be detected is within a preset liquid level range according to the fact that the absolute value of the difference value between the detection capacitance of the first electrode plate and the detection capacitance of the second electrode plate is within a preset threshold range.
6. The solution detecting apparatus according to claim 5, further comprising an alarm unit; the processing unit is connected with the alarm unit; when the real-time liquid level of the container to be detected exceeds the maximum value of the preset liquid level range, the processing unit sends a first prompt signal to the alarm unit; and when the real-time liquid level of the container to be detected is lower than the minimum value of the preset liquid level range, the processing unit sends a second prompt signal to the alarm unit.
7. The solution testing device according to claim 1, further comprising a water supply unit; the processing unit is connected with the water supply unit; the processing unit is used for sending a first prompt signal to the water supply unit when the real-time liquid level of the container to be detected exceeds the maximum value of the preset liquid level range so as to instruct the water supply unit to stop supplying water; and the processing unit is used for sending a second prompt signal to the water supply unit when the real-time liquid level of the container to be detected is lower than the minimum value of the preset liquid level range so as to indicate the water supply unit to supply water.
8. A solution testing method, which is applied to the solution testing apparatus according to any one of claims 1 to 7, the method comprising:
acquiring the detection capacitance of the first electrode plate;
acquiring the detection capacitance of the second electrode plate;
and determining whether the real-time liquid level of the container to be detected is within a preset liquid level range according to the detection capacitance of the first electrode plate and the detection capacitance of the second electrode plate.
9. The method according to claim 8, wherein the determining whether the real-time liquid level of the container to be detected is within a preset liquid level range according to the detection capacitance of the first electrode plate and the detection capacitance of the second electrode plate comprises:
and if the absolute value of the difference value between the detection capacitance of the first electrode plate and the detection capacitance of the second electrode plate is within the preset threshold range, determining that the real-time liquid level of the container to be detected is within the preset liquid level range.
10. The method according to claim 8, wherein after determining whether the real-time liquid level of the container to be detected is within a preset liquid level range according to the detected capacitance of the first electrode plate and the detected capacitance of the second electrode plate, the method further comprises: and sending a prompt signal according to the real-time liquid level of the container to be detected and the preset liquid level range.
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| CN202011404431.6A CN112484810A (en) | 2020-12-02 | 2020-12-02 | Solution detection device and method |
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| CN202011404431.6A CN112484810A (en) | 2020-12-02 | 2020-12-02 | Solution detection device and method |
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