CN112146724A - Device and method for detecting water level height and fertility of water body - Google Patents
Device and method for detecting water level height and fertility of water body Download PDFInfo
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 168
- 230000035558 fertility Effects 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims description 39
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 142
- 239000010935 stainless steel Substances 0.000 claims abstract description 142
- 238000005259 measurement Methods 0.000 claims abstract description 30
- 238000012360 testing method Methods 0.000 claims abstract description 13
- 238000001514 detection method Methods 0.000 claims abstract description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 42
- 239000010959 steel Substances 0.000 claims description 42
- 239000007788 liquid Substances 0.000 claims description 10
- 210000001124 body fluid Anatomy 0.000 claims 1
- 239000010839 body fluid Substances 0.000 claims 1
- 239000012530 fluid Substances 0.000 claims 1
- 230000002262 irrigation Effects 0.000 abstract description 8
- 238000003973 irrigation Methods 0.000 abstract description 8
- 239000002184 metal Substances 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000009434 installation Methods 0.000 description 5
- 230000007774 longterm Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
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- 239000002699 waste material Substances 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
- G01F23/24—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 resistance of resistors due to contact with conductor fluid
- G01F23/241—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 resistance of resistors due to contact with conductor fluid for discrete levels
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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
- G01F23/28—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 the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
- G01F23/296—Acoustic waves
- G01F23/2961—Acoustic waves for discrete levels
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- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
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- G01N33/245—Earth materials for agricultural purposes
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Abstract
The application discloses water level height and fertility check out test set and detection method thereof adopts the mode of stainless steel nail array, judges the water level through measuring the conductivity between the metal nail which two nails between to obtain the height of surface of water. When the two stainless steel nails are connected by water, the conductivity between the two nails is increased, and when the water level is reduced and the two adjacent stainless steel nails are not connected by water, the conductivity between the two nails is small; the magnitude of the conductivity can be obtained by measuring the voltage value between the two metal pins; the water level measuring precision of the scheme only depends on H0And HZThe precision of the two parameters can be controlled within +/-0.1 mm according to the precision of the current PCB production process, and the control requirement of current agricultural irrigation on the water level is completely met; two stainless steel nails at the bottomWhen used as the conductivity of water, i.e. as the conductivity EC of water body0The result of the value is used as a judgment value for the water level height reaching the minimum measurement height, and the value is dual-purpose.
Description
Technical Field
The application relates to the technical field of agricultural irrigation, in particular to a device and a method for detecting water level height and fertility of water.
Background
In the face of the fact that water resources are increasingly in shortage, the importance of reasonable irrigation is more remarkable, the current farmland water level control mainly comprises the steps of manually observing and then manually controlling a valve to open and close a water supply valve and a water discharge valve, the workload is large, the control precision is poor, the reason is a main reason for agricultural water waste, and therefore, the automatic accurate irrigation is very important.
The principle of the water level detection equipment used in the current automatic irrigation system mainly adopts an ultrasonic sensor, and the sensor has two main defects: firstly, the requirement on the installation environment is too high, and the ultrasonic sensor probe is required to be completely forbidden to be empty in a conical area at the vertex and cannot be shielded, so that the ultrasonic sensor probe is not suitable for the complex environment of farmlands; secondly, the measurement accuracy is not only affected by the ambient temperature, but also gradually worsens along with the use duration.
Disclosure of Invention
The application mainly aims to provide a device and a method for detecting the water level and the fertility of water so as to solve the current problems.
In order to achieve the above object, the present application provides the following techniques:
the invention provides equipment for detecting the water level height and the fertility of water, which comprises a vertically arranged PCB (printed Circuit Board), wherein the PCB is provided with a conductivity EC (electric conductivity coefficient) for testing the comprehensive fertility index of the water0And stainless steel standard steel nails for water level judgment; stainless steel measuring steel nails are also arranged on the PCB above the stainless steel standard steel nails in a staggered and uniform interval manner; the PCB above the stainless steel measuring steel nail is also provided with a measuring voltage value for outputting electric level and converting conductivity EC0The processor M1, the processor M1 is electrically connected to the stainless steel reference steel nail and the stainless steel measurement steel nail, respectively.
Further, the stainless steel standardThe steel nail comprises a first stainless steel nail TP01And a second stainless steel nail TP02The first stainless steel nail TP01And the second stainless steel nail TP02Are located at the same level.
Further, in the vertical direction, the first stainless steel nail TP01And the second stainless steel nail TP02The height of the PCB is equal to that of the bottom edges of the PCB and is H0。
Further, in the vertical direction, the distance between the stainless steel measurement steel nails is a standard distance which is HZ。
The second aspect of the present invention provides a method for detecting liquid level height and fertility of water, which is implemented by using the above apparatus for detecting liquid level height and fertility of water, and is characterized by comprising the following steps:
s1 measuring the conductivity EC of water0；
S2, measuring the conductivity EC0And a tolerance value EC for the measured noiseMINComparing;
s3, according to conductivity EC0And a tolerance value EC for the measured noiseMINDetermines the water level height.
Further, the measuring of the conductivity EC of the water0The method specifically comprises the following steps:
controlling the processor M1 to drive the first stainless steel nail TP01Outputting a high level;
measuring the first stainless steel nail TP with a high level01And the second stainless steel nail TP02A voltage value in between;
converting the voltage value into the first stainless steel nail TP01And the second stainless steel nail TP02EC of electric conductivity therebetween0。
Further, in step S3, if it is the conductivity EC0Exceeding the tolerance value EC of the measurement noiseMINThen it indicates that the water level has reached the first stainless steel nail TP01And the second stainless steel nail TP02Is at a height H0At the moment, the water level is measured quantitatively;
the specific quantitative determination of the water level specifically comprises the following steps:
a. setting a test point and marking as X;
b. marking the stainless steel measuring steel nail positioned at the top of the PCB board as N, and then expressing the maximum measuring range H of the PCB board as: h ═ H0+N×HZ；
If it is X>N, indicating that the water level height reaches the maximum measuring range H of the PCB, and indicating that the water level height H reaches the maximum measuring range H of the PCBWater (W)Comprises the following steps: hWater (W)＝H0+N×HZ；
At this time, the processor M1 sets the time length to T0A countdown to enter a low power sleep state;
at T0After the countdown is finished, the user exits the sleep mode, and the process proceeds to step S1 to start the water level H of the next cycleWater (W)And electrical conductivity EC of water0The measurement of (2).
Further, in step b, the method further comprises:
c. if it is X<Or N, the processor M1 is controlled to turn the xth stainless steel nail TPXOutputting a high level;
measuring the Xth stainless steel nail TP by using high levelXAnd the second stainless steel nail TP02A voltage value in between;
converting the Xth stainless steel nail TP by a voltage valueXAnd the second stainless steel nail TP02EC of electric conductivity therebetweenX。
Further, in step c, the method further comprises:
d. if it is ECX<ECMINIf the water level does not reach TP, it indicates that the water level has not reached TPXAt a height of water level HWater (W)＝H0+(X-1)×HZ；
At this time, the processor M1 sets the time length to T0A countdown to enter a low power sleep state;
at T0After the countdown is finished, the user exits the sleep mode, and the process proceeds to step S1 to start the water level H of the next cycleWater (W)And electrical conductivity EC of water0The measurement of (2).
Further, in step c, the method further comprises:
e. if it is ECX≧ECMINThen it indicates that the water level has reached TPXAt a height of water level HWater (W)＝H0+X×HZ，X＝X+1；
Thereafter, steps b, c, d and e are repeated.
Compared with the prior art, this application can bring following technological effect:
1. aiming at the complex environment of the farmland, the invention adopts a mode of a stainless steel nail array, and judges which two nails the water level is between by measuring the conductivity between metal nails through the MCU, thereby obtaining the height of the water level. When the two stainless steel nails are connected by water, the conductivity between the two nails is increased, and when the water level is reduced and the two adjacent stainless steel nails are not connected by water, the conductivity between the two nails is small; the conductivity can be obtained by measuring the voltage value between the two metal nails through the MCU;
compared with the prior art, the method has the advantages of simple installation, strong environmental adaptability, high accuracy, good repeatability, no influence of service life on precision and the like;
2. the water level measuring precision of the scheme only depends on H0And HZThe precision of the two parameters can be controlled within +/-0.1 mm according to the precision of the current PCB production process, and the control requirement of current agricultural irrigation on the water level is completely met;
3. the advantages of the scheme are as follows: the measurement precision and accuracy are not influenced by the ambient temperature and humidity; the long-term stability is good, the measurement precision and accuracy are good, and the service life is not deteriorated; the structure is simple, and the installation is convenient; two stainless steel nails TP at the bottom01And TP02When used as the conductivity of water, i.e. as the conductivity EC of water body0The result of the value, in turn, serves as a determination that the water level height has reached the minimum measured height, a value that is used for both purposes.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, serve to provide a further understanding of the application and to enable other features, objects, and advantages of the application to be more apparent. The drawings and their description illustrate the embodiments of the invention and do not limit it. In the drawings:
FIG. 1 is a perspective view of an embodiment of the detecting device of the present invention;
FIG. 2 is a schematic flow chart of an embodiment of the detection method of the present invention;
FIG. 3 is a detailed flow chart of the detection method of the present invention.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.
In addition, the term "plurality" shall mean two as well as more than two.
H, H relating to the invention0、N、HZ、X、T0The technical definitions represented by the symbols are only formula symbols, and the selection of the numerical values may be set according to actual locations, and may not be limited.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Example 1
The invention adopts a stainless steel nail array mode, and judges which two nails the water level is between by measuring the conductivity between the metal nails through the MCU, thereby obtaining the height of the water level. When the two stainless steel nails are connected by water, the conductivity between the two nails is increased, and when the water level is reduced and the two adjacent stainless steel nails are not connected by water, the conductivity between the two nails is small; and the magnitude of the conductivity can be obtained by measuring the voltage value between the two metal pins through the MCU.
As shown in the attached figure 1, the invention provides a device for detecting the water level height and the fertility of water body, which comprises a vertically arranged PCB (printed Circuit Board), wherein the PCB is provided with a conductivity EC (electric conductivity) used for testing the comprehensive fertility index of the water body0And stainless steel standard steel nails for water level judgment; the PCB board above the stainless steel standard steel nail is also staggeredStainless steel measuring steel nails are uniformly arranged at intervals; the PCB above the stainless steel measuring steel nail is also provided with a measuring voltage value for outputting electric level and converting conductivity EC0The processor M1, the processor M1 is electrically connected to the stainless steel reference steel nail and the stainless steel measurement steel nail, respectively.
EC value: it refers to the concentration of soluble salts in the solution, and can also be used to represent the liquid comprehensive fertility, and the unit is expressed by mS/cm.
On a PCB board, N +2 stainless steel nails are mounted, namely the stainless steel measuring steel nail, wherein two steel nails TP are arranged at the bottom01And TP02At the same horizontal height, measuring the conductivity of water, and the height from the bottom edge of PCB in the vertical direction is H0；
Steel nail TP02、TP1、TP2、…、TPN-1、TPNAre respectively kept at a standard distance H from the previous nail in the vertical directionZ. Therefore, the total measurement range of the sensor is:
H＝H0+N×HZ。
according to the technical scheme, the method can realize that:
stainless steel nails are arranged at equal intervals in the vertical direction of the PCB in appearance;
stainless steel nails arranged at equal intervals in the vertical direction of the PCB are utilized, and the formula H is H0+N×HZMeasuring the height of the water level;
two stainless steel nails TP at the bottom01And TP02When used as the conductivity of water, i.e. as the conductivity EC of water body0The result of the value, in turn, serves as a determination that the water level height has reached the minimum measured height, a value that is used for both purposes.
Further, the stainless steel standard steel nail comprises a first stainless steel nail TP01And a second stainless steel nail TP02The first stainless steel nail TP01And the second stainless steel nail TP02Are located at the same level.
The bottom of the detection equipment of the invention is provided with two stainless steel nails TP01And TP02Respectively being a first stainless steel nail TP01And a second stainless steel nail TP02The two pins being at the same level and being used to measure the conductivity EC of the water0As the comprehensive fertility index of the water body.
The invention has the advantages of high measurement precision and accuracy, and no influence of ambient temperature and humidity; the long-term stability is good, the measurement precision and accuracy are good, and the service life is not deteriorated; the structure is simple, and the installation is convenient; two stainless steel nails TP at the bottom01And TP02When used as the conductivity of water, i.e. as the conductivity EC of water body0The result of the value, in turn, serves as a determination that the water level height has reached the minimum measured height, a value that is used for both purposes.
Further, in the vertical direction, the first stainless steel nail TP01And the second stainless steel nail TP02The height of the PCB is equal to that of the bottom edges of the PCB and is H0。
Further, in the vertical direction, the distance between the stainless steel measurement steel nails is a standard distance which is HZ。
The water level measuring accuracy of the invention depends only on H0And HZThe precision of the two parameters can be controlled within +/-0.1 mm according to the precision of the current PCB production process, and the control requirement of current agricultural irrigation on the water level is completely met.
As shown in the attached figure 2 of the drawings,
the second aspect of the present invention provides a method for detecting liquid level height and fertility of water, which is implemented by using the above apparatus for detecting liquid level height and fertility of water, and is characterized by comprising the following steps:
s1 measuring the conductivity EC of water0；
S2, measuring the conductivity EC0And a tolerance value EC for the measured noiseMINComparing;
s3, according to conductivity EC0And a tolerance value EC for the measured noiseMINDetermines the water level height.
As shown in the attached figure 3 of the drawings,
further, theMeasuring the conductivity EC of water0The method specifically comprises the following steps:
controlling the processor M1 to drive the first stainless steel nail TP01Outputting a high level;
measuring the first stainless steel nail TP with a high level01And the second stainless steel nail TP02A voltage value in between;
converting the voltage value into the first stainless steel nail TP01And the second stainless steel nail TP02EC of electric conductivity therebetween0。
The equipment is powered on, the processor M1 firstly measures the first stainless steel nail TP of the bottom 2 nails01And the second stainless steel nail TP02EC of electric conductivity therebetween0. The specific process is that the processor M1 goes to TP01Outputs a high level, and the processor M1 measures the first stainless steel nail TP01And the second stainless steel nail TP02The voltage value between them, and converting TP by the voltage value01And TP02EC of electric conductivity therebetween0。
Further, in step S3, if it is the conductivity EC0Exceeding the tolerance value EC of the measurement noiseMINThen it indicates that the water level has reached the first stainless steel nail TP01And the second stainless steel nail TP02Is at a height H0At the moment, the water level is measured quantitatively;
the specific quantitative determination of the water level specifically comprises the following steps:
a. setting a test point and marking as X;
and X is the working height of the test point, and the height position of the test point on the PCB is used for testing and judging the height of the water level. As shown in figure 1, the stainless steel measuring nail at the top of the PCB board is TPNAnd the X points can be respectively positioned on stainless steel measurement steel nails TPNThe upper and lower positions of (b) may be set according to test selection.
b. Marking the stainless steel measuring steel nail positioned at the top of the PCB board as N, and then expressing the maximum measuring range H of the PCB board as: h ═ H0+N×HZ；
If it is X>N, then tableThe height of the open water level reaches the maximum measuring range H of the PCB, and the height of the water level HWater (W)Comprises the following steps: hWater (W)＝H0+N×HZ；
At this time, the processor M1 sets the time length to T0A countdown to enter a low power sleep state;
at T0After the countdown is finished, the user exits the sleep mode, and the process proceeds to step S1 to start the water level H of the next cycleWater (W)And electrical conductivity EC of water0The measurement of (2).
Example 2
The invention adopts a stainless steel nail array mode, and judges which two nails the water level is between by measuring the conductivity between the metal nails through the MCU, thereby obtaining the height of the water level. When the two stainless steel nails are connected by water, the conductivity between the two nails is increased, and when the water level is reduced and the two adjacent stainless steel nails are not connected by water, the conductivity between the two nails is small; and the magnitude of the conductivity can be obtained by measuring the voltage value between the two metal pins through the MCU.
As shown in the attached figure 1, the invention provides a device for detecting the water level height and the fertility of water body, which comprises a vertically arranged PCB (printed Circuit Board), wherein the PCB is provided with a conductivity EC (electric conductivity) used for testing the comprehensive fertility index of the water body0And stainless steel standard steel nails for water level judgment; stainless steel measuring steel nails are also arranged on the PCB above the stainless steel standard steel nails in a staggered and uniform interval manner; the PCB above the stainless steel measuring steel nail is also provided with a measuring voltage value for outputting electric level and converting conductivity EC0The processor M1, the processor M1 is electrically connected to the stainless steel reference steel nail and the stainless steel measurement steel nail, respectively.
EC value: it refers to the concentration of soluble salts in the solution, and can also be used to represent the liquid comprehensive fertility, and the unit is expressed by mS/cm.
On a PCB board, N +2 stainless steel nails are mounted, namely the stainless steel measuring steel nail, wherein two steel nails TP are arranged at the bottom01And TP02At the same horizontal level for measuring the conductivity of the water, in the vertical directionThe height of the vertical direction from the bottom edge of the PCB is H0；
Steel nail TP02、TP1、TP2、…、TPN-1、TPNAre respectively kept at a standard distance H from the previous nail in the vertical directionZ. Therefore, the total measurement range of the sensor is:
H＝H0+N×HZ。
according to the technical scheme, the method can realize that:
stainless steel nails are arranged at equal intervals in the vertical direction of the PCB in appearance;
stainless steel nails arranged at equal intervals in the vertical direction of the PCB are utilized, and the formula H is H0+N×HZMeasuring the height of the water level;
two stainless steel nails TP at the bottom01And TP02When used as the conductivity of water, i.e. as the conductivity EC of water body0The result of the value, in turn, serves as a determination that the water level height has reached the minimum measured height, a value that is used for both purposes.
Further, the stainless steel standard steel nail comprises a first stainless steel nail TP01And a second stainless steel nail TP02The first stainless steel nail TP01And the second stainless steel nail TP02Are located at the same level.
The bottom of the detection equipment of the invention is provided with two stainless steel nails TP01And TP02Respectively being a first stainless steel nail TP01And a second stainless steel nail TP02The two pins being at the same level and being used to measure the conductivity EC of the water0As the comprehensive fertility index of the water body.
The invention has the advantages of high measurement precision and accuracy, and no influence of ambient temperature and humidity; the long-term stability is good, the measurement precision and accuracy are good, and the service life is not deteriorated; the structure is simple, and the installation is convenient; two stainless steel nails TP at the bottom01And TP02When used as the conductivity of water, i.e. as the conductivity EC of water body0The result of the value, in turn, serves as a determination that the water level height has reached the minimum measured height, a value that is used for both purposes.
Further, in the vertical direction, the first stainless steel nail TP01And the second stainless steel nail TP02The height of the PCB is equal to that of the bottom edges of the PCB and is H0。
Further, in the vertical direction, the distance between the stainless steel measurement steel nails is a standard distance which is HZ。
The water level measuring accuracy of the invention depends only on H0And HZThe precision of the two parameters can be controlled within +/-0.1 mm according to the precision of the current PCB production process, and the control requirement of current agricultural irrigation on the water level is completely met.
As shown in fig. 2 and 3, a method for detecting the liquid level and fertility of water comprises the following steps:
s1 measuring the conductivity EC of water0；
S2, judging the conductivity EC0Whether the tolerance value EC of the measurement noise is exceededMIN；
S3, if the conductivity EC0Not exceeding the tolerance value EC of the measurement noiseMINThen, the water level is not reached to the first stainless steel nail TP01And the second stainless steel nail TP02Is at a height H0。
Further, the measuring of the conductivity EC of the water0The method specifically comprises the following steps:
controlling the processor M1 to drive the first stainless steel nail TP01Outputting a high level;
measuring the first stainless steel nail TP with a high level01And the second stainless steel nail TP02A voltage value in between;
converting the voltage value into the first stainless steel nail TP01And the second stainless steel nail TP02EC of electric conductivity therebetween0。
Further, in step S3, if it is the conductivity EC0Exceeding the tolerance value EC of the measurement noiseMINThen it indicates that the water level has reached the first stainless steel nail TP01And the second stainless steel nail TP02Is at a height H0At the moment, the water level is measured quantitatively;
the specific quantitative determination of the water level specifically comprises the following steps:
a. setting a test point and marking as X;
b. marking the stainless steel measuring steel nail positioned at the top of the PCB board as N, and then expressing the maximum measuring range H of the PCB board as: h ═ H0+N×HZ；
Further, in step b, the method further comprises:
c. if it is X<Or N, the processor M1 is controlled to turn the xth stainless steel nail TPXOutputting a high level;
measuring the Xth stainless steel nail TP by using high levelXAnd the second stainless steel nail TP02A voltage value in between;
converting the Xth stainless steel nail TP by a voltage valueXAnd the second stainless steel nail TP02EC of electric conductivity therebetweenX。
Further, in step c, the method further comprises:
d. if it is ECX<ECMINIf the water level does not reach TP, it indicates that the water level has not reached TPXAt a height of water level HWater (W)＝H0+(X-1)×HZ；
At this time, the processor M1 sets the time length to T0A countdown to enter a low power sleep state;
at T0After the countdown is finished, the user exits the sleep mode, and the process proceeds to step S1 to start the water level H of the next cycleWater (W)And electrical conductivity EC of water0The measurement of (2).
Further, in step c, the method further comprises:
e. if it is ECX≧ECMINThen it indicates that the water level has reached TPXAt a height of water level HWater (W)＝H0+X×HZ，X＝X+1；
Thereafter, steps b, c, d and e are repeated.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. The water body liquid level height and fertility detection equipment is characterized by comprising a vertically arranged PCB (printed circuit board), wherein the PCB is provided with a conductivity EC (electric conductivity) for testing a comprehensive fertility index of a water body0And stainless steel standard steel nails for water level judgment; stainless steel measuring steel nails are also arranged on the PCB above the stainless steel standard steel nails in a staggered and uniform interval manner; the PCB above the stainless steel measuring steel nail is also provided with a measuring voltage value for outputting electric level and converting conductivity EC0The processor M1, the processor M1 is electrically connected to the stainless steel reference steel nail and the stainless steel measurement steel nail, respectively.
2. The apparatus for measuring water level and fertility of claim 1, wherein the stainless steel reference nail comprises a first stainless steel nail TP01And a second stainless steel nail TP02The first stainless steel nail TP01And the second stainless steel nail TP02Are located at the same level.
3. The apparatus for measuring the fluid level and fertility of a body fluid according to claim 2, wherein the first stainless steel nail TP is vertically arranged01And the second stainless steel nail TP02The height of the PCB is equal to that of the bottom edges of the PCB and is H0。
4. The apparatus for measuring the level of water and the fertility of claim 3, wherein the stainless steel measuring nails are spaced apart from each other by a standard distance H in the vertical directionZ。
5. An aqueous liquid level height and fertility detection method implemented by using the aqueous liquid level height and fertility detection device according to any one of claims 1 to 4, characterized by comprising the following steps:
s1 measuring the conductivity EC of water0；
S2, measuring the conductivity EC0And a tolerance value EC for the measured noiseMINComparing;
s3, according to conductivity EC0And a tolerance value EC for the measured noiseMINDetermines the water level height.
6. The method as claimed in claim 5, wherein the measuring of the water conductivity EC is performed0The method specifically comprises the following steps:
controlling the processor M1 to drive the first stainless steel nail TP01Outputting a high level;
measuring the first stainless steel nail TP with a high level01And the second stainless steel nail TP02A voltage value in between;
converting the voltage value into the first stainless steel nail TP01And the second stainless steel nail TP02EC of electric conductivity therebetween0。
7. The method as claimed in claim 5, wherein in step S3, the conductivity EC is the conductivity0Exceeding the tolerance value EC of the measurement noiseMINThen it indicates that the water level has reached the first stainless steel nail TP01And the second stainless steel nail TP02Is at a height H0At the moment, the water level is measured quantitatively;
the specific quantitative determination of the water level specifically comprises the following steps:
a. setting a test point and marking as X;
b. marking the stainless steel measuring steel nail positioned at the top of the PCB board as N, and then expressing the maximum measuring range H of the PCB board as: h ═ H0+N×HZ；
If it is X>N, indicating that the water level height reaches the maximum measuring range H of the PCB, and indicating that the water level height H reaches the maximum measuring range H of the PCBWater (W)Comprises the following steps: hWater (W)＝H0+N×HZ；
At this time, the processor M1 sets the time length to T0A countdown to enter a low power sleep state;
at T0After the countdown is finished, the user exits the sleep mode, and the process proceeds to step S1 to start the water level H of the next cycleWater (W)And electrical conductivity EC of water0The measurement of (2).
8. The method for detecting water level and fertility of claim 7, further comprising, in step b:
c. if it is X<Or N, the processor M1 is controlled to turn the xth stainless steel nail TPXOutputting a high level;
measuring the Xth stainless steel nail TP by using high levelXAnd the second stainless steel nail TP02A voltage value in between;
converting the Xth stainless steel nail TP by a voltage valueXAnd the second stainless steel nail TP02EC of electric conductivity therebetweenX。
9. The method of claim 8, wherein in step c, the method further comprises:
d. if it is ECX<ECMINIf the water level does not reach TP, it indicates that the water level has not reached TPXAt a height of water level HWater (W)＝H0+(X-1)×HZ；
At this time, the processor M1 sets the time length to T0A countdown to enter a low power sleep state;
at T0After the countdown is finished, the user exits the sleep mode, and the process proceeds to step S1 to start the water level H of the next cycleWater (W)And electrical conductivity EC of water0The measurement of (2).
10. The method of claim 8, wherein in step c, the method further comprises:
e. if it is ECX≧ECMINThen it indicates that the water level has reached TPXAt a height of water level HWater (W)＝H0+X×HZ，X＝X+1；
Thereafter, steps b, c, d and e are repeated.
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