CN111008770B - Intelligent irrigation method and device - Google Patents
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- 238000003973 irrigation Methods 0.000 title claims abstract description 91
- 230000002262 irrigation Effects 0.000 title claims abstract description 91
- 238000000034 method Methods 0.000 title claims abstract description 44
- 230000005068 transpiration Effects 0.000 claims abstract description 75
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 63
- 239000003621 irrigation water Substances 0.000 claims abstract description 12
- 239000002023 wood Substances 0.000 claims description 55
- 238000004364 calculation method Methods 0.000 claims description 9
- 238000003860 storage Methods 0.000 claims description 7
- 238000004590 computer program Methods 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 3
- 238000011217 control strategy Methods 0.000 abstract 1
- 238000004891 communication Methods 0.000 description 6
- 239000002689 soil Substances 0.000 description 5
- 241001481296 Malus spectabilis Species 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 241000196324 Embryophyta Species 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 238000001035 drying Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
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- 230000035945 sensitivity Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The embodiment of the invention provides an intelligent irrigation method and device, wherein the method comprises the following steps: acquiring the water content of the stems of crops to be irrigated at each time point; acquiring the transpiration quantity of crops to be irrigated at each time point, and building an irrigation model according to the transpiration quantity and the water content of the stems, wherein the irrigation model is the corresponding relation between the water content of the stems and the transpiration quantity at each time point; comparing the moisture content of the stems at each time point to obtain a daily minimum value of the moisture content of the stems, performing curve fitting on the daily minimum value and the corresponding date to obtain a fitted curve, and detecting the slope of the fitted curve; when the slope is smaller than a preset slope, obtaining the corresponding moisture content of the stems, and combining an irrigation model to obtain the current-day transpiration quantity corresponding to the moisture content of the stems; and driving a corresponding irrigation device to irrigate crops to be irrigated, and enabling the irrigation water flow to be equal to the current day transpiration. By adopting the method, an intelligent irrigation control strategy for irrigation according to the moisture content of the stems can be provided.
Description
Technical Field
The invention relates to the field of irrigation control, in particular to an intelligent irrigation method and device.
Background
The water demand of the traditional agricultural crops in China refers to the water consumption required by the growth and development of the crops. Recent researches show that crops have physiological water-saving and drought-resisting capabilities, the water demand of the crops in each growth stage is different, and the sensitivity of the crops in each growth stage to moisture is different. Insufficient irrigation can not meet the production requirements of crops, and excessive irrigation can also affect the growth of crops.
At present, the main basis for intelligent irrigation of crops in China is to refer to the soil moisture corresponding to the crops, the soil moisture can partially reflect the current water demand of the crops, and different soil moisture indexes are regulated and controlled according to different types of the crops to irrigate the corresponding crops.
However, the above-described intelligent irrigation index based on soil moisture cannot directly reflect the physiological water consumption of plants, and there is a possibility that the control of the irrigation water amount may deviate.
Disclosure of Invention
Aiming at the problems in the prior art, the embodiment of the invention provides an intelligent irrigation method and device for irrigating according to the moisture content of stems.
The embodiment of the invention provides an intelligent irrigation method, which comprises the following steps:
acquiring the water content of the stems of crops to be irrigated at each time point;
acquiring the transpiration amount of the crop to be irrigated at each time point, and establishing an irrigation model according to the transpiration amount and the water content of the stems, wherein the irrigation model is the corresponding relation between the water content of the stems and the transpiration amount at each time point;
comparing the moisture content of the stems at each time point to obtain a daily minimum value of the moisture content of the stems, performing curve fitting on the daily minimum value and a corresponding date to obtain a fitted curve, and detecting the slope of the fitted curve;
when the slope is smaller than a preset slope, obtaining the corresponding moisture content of the stems, and combining the irrigation model to obtain the current-day transpiration quantity corresponding to the moisture content of the stems;
and driving a corresponding irrigation device to irrigate the crops to be irrigated, and enabling the irrigation water flow to be equal to the current day transpiration.
In one embodiment, the method further comprises:
acquiring voltage values of all time points of the crops to be irrigated through a water sensor;
obtaining a calibration formula corresponding to the crop to be irrigated, wherein the calibration formula is used for converting the voltage value of the sensor into the moisture content of the stems;
and calculating the water content of the stems of the crops to be irrigated at each time point according to the voltage value of the crops to be irrigated at each time point and the calibration formula.
In one embodiment, the method further comprises:
acquiring a living wood section of the crop to be irrigated, and measuring various attribute values of the living wood section;
acquiring a preset period, and periodically detecting the weight and the voltage value of the movable wood section according to the preset period;
when the weight of the living wood section is detected to be the same as the weight detected last time, obtaining the constant weight of the living wood section, and calculating the stem water content of the living wood section according to the constant weight and the attribute value;
and performing linear fitting according to the moisture content of the stems and the voltage value to obtain the calibration formula.
In one embodiment, the method further comprises:
and obtaining the type of the crop to be irrigated, and determining the preset slope according to the type of the crop to be irrigated.
In one embodiment, the method further comprises:
obtaining stem flow values of all time points of the crops to be irrigated through a stem flow meter;
and calculating the transpiration quantity of the crops to be irrigated at each time point according to the stem flow value of each time point.
The embodiment of the invention provides an intelligent irrigation device, which comprises:
the first acquisition module is used for acquiring the moisture content of the stems of crops to be irrigated at all time points;
the model building module is used for obtaining the transpiration amount of the crop to be irrigated at each time point, building an irrigation model according to the transpiration amount and the water content of the stems, wherein the irrigation model is the corresponding relation between the water content of the stems and the transpiration amount at each time point;
the curve fitting module is used for comparing the moisture content of the stems at each time point to obtain a daily minimum value of the moisture content of the stems, performing curve fitting on the daily minimum value and a corresponding date to obtain a fitting curve, and detecting the slope of the fitting curve;
the second acquisition module is used for acquiring the corresponding moisture content of the stems when the slope is smaller than a preset slope, and acquiring the current-day transpiration quantity corresponding to the moisture content of the stems by combining the irrigation model;
and the irrigation module is used for driving a corresponding irrigation device to irrigate the crops to be irrigated and enabling the irrigation water flow to be equal to the current day transpiration.
In one embodiment, the apparatus further comprises:
the third acquisition module is used for acquiring the voltage values of all time points of the crops to be irrigated through the moisture sensor;
the fourth acquisition module is used for acquiring a calibration formula corresponding to the crop to be irrigated, and the calibration formula is used for converting the voltage value of the sensor into the moisture content of the stems;
the calculation module is used for calculating the water content of the stems of the crops to be irrigated at each time point according to the voltage values of the crops to be irrigated at each time point and the calibration formula.
In one embodiment, the apparatus further comprises:
a fifth acquisition module, configured to acquire a living wood section of the crop to be irrigated, and measure each attribute value of the living wood section;
the detection module is used for acquiring a preset period and periodically detecting the weight and the voltage value of the movable wood section according to the preset period;
the second calculation module is used for obtaining the constant weight of the live wood section when the weight of the live wood section is detected to be the same as the weight detected last time, and calculating the moisture content of the stems of the live wood section according to the constant weight and the attribute value;
and the fitting module is used for carrying out linear fitting according to the moisture content of the stems and the voltage value to obtain the calibration formula.
The embodiment of the invention provides electronic equipment, which comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein the processor realizes the steps of the intelligent irrigation method when executing the program.
Embodiments of the present invention provide a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the intelligent irrigation method described above.
According to the intelligent irrigation method and device provided by the embodiment of the invention, the water content and the transpiration quantity of the stems of the crops to be irrigated are obtained at each time point; establishing an irrigation model of each corresponding time point between the transpiration quantity and the moisture content of the stems; comparing the moisture content of the stems at each time point to obtain a daily minimum value of the moisture content of the stems, performing curve fitting on the minimum value and a corresponding date to obtain a fitted curve between the date and the minimum value of the stems, and detecting the slope of the fitted curve; when the slope is smaller than a preset slope, obtaining the corresponding moisture content of the stems, and combining an irrigation model to obtain the current-day transpiration quantity corresponding to the moisture content of the stems; and driving a corresponding irrigation device to irrigate crops to be irrigated, and enabling the irrigation water flow to be equal to the current day transpiration. The method determines the transpiration amount of crops to be irrigated through the moisture content of the stems, and irrigates according to the transpiration amount, and a reasonable intelligent irrigation method for irrigating according to the moisture content of the stems is set.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a method of intelligent irrigation in an embodiment of the invention;
FIG. 2 is a block diagram of a smart irrigation device in accordance with an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an electronic device according to an embodiment of the invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Fig. 1 is a schematic flow chart of an intelligent irrigation method according to an embodiment of the present invention, and as shown in fig. 1, an embodiment of the present invention provides an intelligent irrigation method, including:
step S101, obtaining the moisture content of the stems of crops to be irrigated at all time points.
Specifically, the method for obtaining the moisture content of the stems can be used for obtaining the moisture content of the stems of crops according to the relation between the voltage value and the moisture content through a moisture sensor, such as a BD-IV type plant moisture sensor, or other types of moisture sensors. The server can further acquire the water content of the stems of the crops to be irrigated at all time points through the bound water sensors.
Step S102, obtaining the transpiration amount of the crop to be irrigated at each time point, and building an irrigation model according to the transpiration amount and the water content of the stems, wherein the irrigation model is the corresponding relation between the water content of the stems and the transpiration amount at each time point.
Specifically, the transpiration amount refers to the amount of water which is delivered to the outside atmosphere in the form of gaseous water in the crop body, the server obtains the transpiration amount by calculating the heat change during water delivery through a stem flow meter by utilizing an energy conservation theorem, so as to obtain the transpiration amount of the crop, an irrigation model is built by the transpiration amount and the water content of the stems of the crops to be irrigated at corresponding time points, the model comprises the corresponding relation between the water content of the stems of the crops to be irrigated at each time point and the transpiration amount, for example, the water content of the stems of the crops at 1 pm corresponds to the transpiration amount at 1 pm, the water content of the stems at 2 pm corresponds to the transpiration amount at 2 pm, and the like.
Step S103, comparing the moisture content of the stems at each time point to obtain a daily minimum value of the moisture content of the stems, performing curve fitting on the minimum value in the daily minimum value and a corresponding date to obtain a fitted curve, and detecting the slope of the fitted curve.
Specifically, comparing the obtained moisture content of the stems of the crops to be irrigated according to the date, for example, comparing the moisture content of the stems on monday with the moisture content of the stems on tuesday, obtaining a daily minimum value of the moisture content of the stems, performing curve fitting on the daily minimum value and the corresponding date, namely, selecting a proper relational expression to obtain a linear relation between the minimum value of the moisture content of the stems and the date, and detecting the slope of the linear relation according to the obtained linear relation.
And step S104, when the slope is smaller than a preset slope, acquiring the corresponding moisture content of the stems, and combining the irrigation model to acquire the current-day transpiration quantity corresponding to the moisture content of the stems.
Specifically, the preset slope can be set according to the type of crops to be irrigated, or can be set by reference according to historical data, the preset slope is usually set to be smaller than 0, when the slope is smaller than 0, the crops are in a state of gradually lacking water, when the slope of the linear relation between the minimum of the moisture content of the stems and the date is detected to be smaller than the preset slope, the moisture content of the stems corresponding to the current state is obtained, the moisture content of the stems is the minimum of the current state, the transpiration of the same time point corresponding to the minimum of the moisture content of the stems on the current state can also be represented, and then the transpiration of the stems corresponding to the minimum of the moisture content of the stems on the current state can be obtained according to an irrigation model.
Step 105, driving a corresponding irrigation device to irrigate the crops to be irrigated, and enabling the flow of the irrigated water to be equal to the current day transpiration.
Specifically, when the slope is detected to be smaller than the preset slope, the server drives the corresponding irrigation device to irrigate the crops to be irrigated at the time point when the crops to be irrigated need to be irrigated, and the irrigation water flow is enabled to be equal to the current day transpiration, so that the irrigation quantity of the crops to be irrigated is ensured, and the irrigation quantity is not excessive or too small.
According to the intelligent irrigation method and device provided by the embodiment of the invention, the water content and the transpiration amount of the stems of crops to be irrigated are obtained at each time point; establishing an irrigation model of each corresponding time point between the transpiration quantity and the moisture content of the stems; comparing the moisture content of the stems at each time point to obtain a daily minimum value of the moisture content of the stems, performing curve fitting on the minimum value and a corresponding date to obtain a fitted curve between the date and the minimum value of the stems, and detecting the slope of the fitted curve; when the slope is smaller than a preset slope, obtaining the corresponding moisture content of the stems, and combining an irrigation model to obtain the current-day transpiration quantity corresponding to the moisture content of the stems; and driving a corresponding irrigation device to irrigate crops to be irrigated, and enabling the irrigation water flow to be equal to the current day transpiration. The method determines the transpiration amount of crops to be irrigated through the moisture content of the stems, and irrigates according to the transpiration amount, and a reasonable intelligent irrigation method for irrigating according to the moisture content of the stems is set.
On the basis of the above embodiment, the intelligent irrigation method further includes:
acquiring voltage values of all time points of the crops to be irrigated through a sensor;
obtaining a calibration formula corresponding to the crop to be irrigated, wherein the calibration formula is used for converting the voltage value of the sensor into the moisture content of the stems;
and calculating the water content of the stems of the crops to be irrigated at each time point according to the voltage value of the crops to be irrigated at each time point and the calibration formula.
In the embodiment of the invention, because a corresponding relation exists between the voltage value of the crop and the voltage value detected by the sensor, namely a calibration formula, the calibration formula between the voltage value and the voltage value of the crop to be irrigated is obtained, the calibration formula can be calculated according to a living wood experiment of the crop to be irrigated, and after the voltage value of each time point of the crop to be irrigated is obtained according to the moisture sensor, the moisture content of the stems of the crop to be irrigated can be calculated clearly according to the calibration formula.
According to the embodiment of the invention, the voltage value of the crop to be irrigated is obtained through the water sensor, the moisture content of the stems of the irrigated crop is calculated according to the voltage value of the crop to be irrigated, the calculation of the subsequent transpiration amount is convenient, and the subsequent planning of the irrigation amount is also convenient.
On the basis of the above embodiment, the intelligent irrigation method further includes:
acquiring a living wood section of the crop to be irrigated, and measuring various attribute values of the living wood section;
acquiring a preset period, and periodically detecting the weight and the voltage value of the movable wood section according to the preset period;
when the weight of the living wood section is detected to be the same as the weight detected last time, obtaining the constant weight of the living wood section, and calculating the stem water content of the living wood section according to the constant weight and the attribute value;
and performing linear fitting according to the moisture content of the stems and the voltage value to obtain the calibration formula.
According to the embodiment of the invention, a calibration formula can be obtained by using a calibration method, a living wood section of crops to be irrigated is obtained, various attribute values of the living wood section are measured, the attribute values can comprise the current weight, volume and other data of the living wood section, the living wood section is kept still, the weight of the living wood section and the voltage value obtained by a sensor are detected according to a preset period, when the weight of the living wood section is detected to be the same as the weight detected last time, namely, the weight of the living wood section tends to be stable, the moisture content of stems of the living wood section is calculated according to the current constant weight and the attribute values, and then linear fitting is carried out on the moisture content of stems and the voltage value, so that the calibration formula is obtained. The specific calibration method can be as follows:
the calibration method is to use the cut living wood sections, and the same crop is generally calibrated only once. After the calibration work is completed, the voltage value of the sensor can be directly converted into the moisture content of the stems by using a calibration formula. The following is a description of the calibration method when the crop to be irrigated is the malus spectabilis, and the calibration formula of the malus spectabilis and the relation formula of the water content of the malus spectabilis stems and the sensor voltage value.
Cutting a trunk of a target crop, wherein the length of the trunk is about 10cm; immersing the wood segments completely in water for 24 hours to increase the moisture content in the trunk; measuring the volume V and the mass M of the fresh wood segments; then placing the wood segments with the sensors in an incubator (the temperature is set to 25 ℃), recording the mass of the wood segments and the output voltage value of the sensors every 12 hours until the total mass and the voltage value tend to be stable, placing the wood segments in a drying oven for drying (the temperature is set to 60 ℃) to constant weight, recording the mass and the voltage value, performing a calibration experiment for 14 days, and calculating the volume water content (theta) of the stems according to the formula (1):
wherein M is A Is the mass (g) of the water-containing wood segment, M B The mass (g) of the absolute dry wood section, and ρ is the density (g/cm) of water 3 ) V is the volume of the tree section (cm) 3 )。
Linearly fitting the water content and the voltage value to obtain a corresponding fitting curve: the relation formula of the water content of the malus spectabilis stems and the voltage value obtained according to the calibration experiment is as follows:
StWC＝0.0636*U-0.6543
R 2 ＝0.9653
wherein StWC is the water content (%) of the stems, U is the output voltage value (mV) of the sensor, and R 2 = 0.9653, demonstrating a better linearity of the calibration curve. The voltage values output by the subsequent plant moisture sensors are converted into the moisture content of the stems according to the above method.
According to the embodiment of the invention, the corresponding relation between the voltage value and the weight of the crop is obtained through the living wood sections of the crop to be irrigated, so that the moisture content of the stems of the crop can be calculated.
On the basis of the above embodiment, the intelligent irrigation method further includes:
and obtaining the type of the crop to be irrigated, and determining the preset slope according to the type of the crop to be irrigated.
According to the embodiment of the invention, the slope of the fitted curve during irrigation is set according to the type of crops to be irrigated, the slope can be set according to the water demand of the crops to be irrigated, the slope can be set relatively high for crops with high water demands, such as-0.1, -0.2 and the like, and the slope can be set relatively low for crops with low water demands, such as-0.7, -0.8 and the like.
According to the embodiment of the invention, the corresponding relation between the voltage value and the weight of the crop is obtained through the living wood sections of the crop to be irrigated, so that the moisture content of the stems of the crop can be calculated.
On the basis of the above embodiment, the intelligent irrigation method further includes:
the stem flow values of all time points of the crops to be irrigated are obtained through a stem flow meter;
and calculating the transpiration quantity of the crops to be irrigated at each time point according to the stem flow value of each time point.
In the embodiment of the invention, the stem flow meter can be a wrapped stem flow meter and is used for measuring the stem position of the crop, so that the stem flow value of the crop can be obtained, and the server can determine the water consumption of the stem flow of the crop, namely the transpiration of the crop according to the stem flow value of each time point of the crop and the heat change relation in the crop after obtaining the stem flow value of the crop to be irrigated at each time point through the wrapped stem flow meter.
According to the embodiment of the invention, the stem flow value of the crop to be irrigated is obtained through the stem flow meter, and the transpiration quantity of the crop to be irrigated is calculated through the stem flow value, so that compared with the existing test soil moisture, a more accurate calculation result can be obtained.
Fig. 2 is a schematic diagram of an intelligent irrigation apparatus according to an embodiment of the present invention, including: a first acquisition module 201, a model building 202, a curve fitting module 203, a second acquisition module 204, and an irrigation module 205, wherein:
the first obtaining module 201 is configured to obtain the moisture content of the stems of the crops to be irrigated at each time point.
The model building module 202 is configured to obtain the transpiration amount of the crop to be irrigated at each time point, and build an irrigation model according to the transpiration amount and the moisture content of the stems, where the irrigation model is a corresponding relationship between the moisture content of the stems and the transpiration amount at each time point.
And the curve fitting module 203 is configured to compare the moisture content of the stems at each time point to obtain a daily minimum value of the moisture content of the stems, perform curve fitting on the daily minimum value and the corresponding date to obtain a fitted curve, and detect the slope of the fitted curve.
And the second obtaining module 204 is configured to obtain the corresponding moisture content of the stems when the slope is smaller than the preset slope, and obtain the current daily transpiration corresponding to the moisture content of the stems by combining with the irrigation model.
The irrigation module 205 is configured to drive a corresponding irrigation device to irrigate crops to be irrigated, and make the irrigation water flow equal to the current day transpiration.
In one embodiment, the apparatus may further include:
and the third acquisition module is used for acquiring the voltage value of each time point of the crop to be irrigated through the moisture sensor.
The fourth acquisition module is used for acquiring a calibration formula corresponding to the crop to be irrigated, and the calibration formula is used for converting the voltage value of the sensor into the moisture content of the stems;
the calculation module is used for calculating the water content of the stems of the crops to be irrigated at each time point according to the voltage values of the crops to be irrigated at each time point and the calibration formula.
In one embodiment, the apparatus may further include:
a fifth acquisition module, configured to acquire a living wood section of the crop to be irrigated, and measure each attribute value of the living wood section;
the detection module is used for acquiring a preset period and periodically detecting the weight and the voltage value of the movable wood section according to the preset period;
the second calculation module is used for obtaining the constant weight of the live wood section when the weight of the live wood section is detected to be the same as the weight detected last time, and calculating the moisture content of the stems of the live wood section according to the constant weight and the attribute value;
and the fitting module is used for carrying out linear fitting according to the moisture content of the stems and the voltage value to obtain the calibration formula.
In one embodiment, the apparatus may further include:
and the sixth acquisition module is used for acquiring the type of the crop to be irrigated and determining a preset slope according to the type of the crop to be irrigated.
In one embodiment, the apparatus may further include:
and the seventh acquisition module is used for acquiring the stem flow value of each time point of the crop to be irrigated through the stem flow meter.
And the third calculation module is used for calculating the transpiration quantity of crops to be irrigated at each time point according to the stem flow value at each time point.
For specific limitations of the intelligent irrigation apparatus, reference may be made to the limitations of the intelligent irrigation method hereinabove, and no further description is given here. The various modules in the intelligent irrigation apparatus described above may be implemented in whole or in part in software, hardware, and combinations thereof. The above modules may be embedded in hardware or may be independent of a processor in the computer device, or may be stored in software in a memory in the computer device, so that the processor may call and execute operations corresponding to the above modules.
Fig. 3 illustrates a physical schematic diagram of an electronic device, as shown in fig. 3, where the electronic device may include: a processor (processor) 301, a memory (memory) 302, a communication interface (Communications Interface) 303 and a communication bus 304, wherein the processor 301, the memory 302 and the communication interface 303 perform communication with each other through the communication bus 304. The processor 301 may call logic instructions in the memory 302 to perform the following method: acquiring the water content of the stems of crops to be irrigated at each time point; acquiring the transpiration amount of the crop to be irrigated at each time point, and establishing an irrigation model according to the transpiration amount and the water content of the stems, wherein the irrigation model is the corresponding relation between the water content of the stems and the transpiration amount at each time point; comparing the moisture content of the stems at each time point to obtain a daily minimum value of the moisture content of the stems, performing curve fitting on the daily minimum value and a corresponding date to obtain a fitted curve, and detecting the slope of the fitted curve; when the slope is smaller than a preset slope, obtaining the corresponding moisture content of the stems, and combining the irrigation model to obtain the current-day transpiration quantity corresponding to the moisture content of the stems; and driving a corresponding irrigation device to irrigate the crops to be irrigated, and enabling the irrigation water flow to be equal to the current day transpiration.
Further, the logic instructions in memory 302 described above may be implemented in the form of software functional units and stored in a computer readable storage medium when sold or used as a stand alone product. Based on this understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
In another aspect, embodiments of the present invention further provide a non-transitory computer readable storage medium having stored thereon a computer program, which when executed by a processor is implemented to perform the transmission method provided in the above embodiments, for example, including: acquiring the water content of the stems of crops to be irrigated at each time point; acquiring the transpiration amount of the crop to be irrigated at each time point, and establishing an irrigation model according to the transpiration amount and the water content of the stems, wherein the irrigation model is the corresponding relation between the water content of the stems and the transpiration amount at each time point; comparing the moisture content of the stems at each time point to obtain a daily minimum value of the moisture content of the stems, performing curve fitting on the daily minimum value and a corresponding date to obtain a fitted curve, and detecting the slope of the fitted curve; when the slope is smaller than a preset slope, obtaining the corresponding moisture content of the stems, and combining the irrigation model to obtain the current-day transpiration quantity corresponding to the moisture content of the stems; and driving a corresponding irrigation device to irrigate the crops to be irrigated, and enabling the irrigation water flow to be equal to the current day transpiration.
The apparatus embodiments described above are merely illustrative, wherein the elements illustrated as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.
From the above description of the embodiments, it will be apparent to those skilled in the art that the embodiments may be implemented by means of software plus necessary general hardware platforms, or of course may be implemented by means of hardware. Based on this understanding, the foregoing technical solution may be embodied essentially or in a part contributing to the prior art in the form of a software product, which may be stored in a computer readable storage medium, such as ROM/RAM, a magnetic disk, an optical disk, etc., including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method described in the respective embodiments or some parts of the embodiments.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (6)
1. An intelligent irrigation method, comprising:
acquiring the water content of the stems of crops to be irrigated at each time point;
acquiring the transpiration amount of the crop to be irrigated at each time point, and establishing an irrigation model according to the transpiration amount and the water content of the stems, wherein the irrigation model is the corresponding relation between the water content of the stems and the transpiration amount at each time point;
comparing the moisture content of the stems at each time point to obtain a daily minimum value of the moisture content of the stems, performing curve fitting on the daily minimum value and a corresponding date to obtain a fitted curve, and detecting the slope of the fitted curve;
when the slope is smaller than a preset slope, obtaining the corresponding moisture content of the stems, and combining the irrigation model to obtain the current-day transpiration quantity corresponding to the moisture content of the stems;
driving a corresponding irrigation device to irrigate the crops to be irrigated, and enabling the irrigation water flow to be equal to the current day transpiration;
the obtaining of the water content of the stems of the crops to be irrigated at each time point comprises the following steps:
acquiring voltage values of all time points of the crops to be irrigated through a sensor;
obtaining a calibration formula corresponding to the crop to be irrigated, wherein the calibration formula is used for converting the voltage value of the sensor into the moisture content of the stems;
calculating to obtain the water content of the stems of the crops to be irrigated at all time points according to the voltage values of the crops to be irrigated at all time points and the calibration formula;
the calibration formula comprises:
acquiring a living wood section of the crop to be irrigated, and measuring various attribute values of the living wood section;
acquiring a preset period, and periodically detecting the weight and the voltage value of the movable wood section according to the preset period;
when the weight of the living wood section is detected to be the same as the weight detected last time, obtaining the constant weight of the living wood section, and calculating the stem water content of the living wood section according to the constant weight and the attribute value;
and performing linear fitting according to the moisture content of the stems and the voltage value to obtain the calibration formula.
2. The intelligent irrigation method as recited in claim 1, wherein the method further comprises:
and obtaining the type of the crop to be irrigated, and determining the preset slope according to the type of the crop to be irrigated.
3. The intelligent irrigation method according to claim 1, wherein the obtaining the transpiration amount at each time point of the crop to be irrigated comprises:
obtaining stem flow values of all time points of the crops to be irrigated through a stem flow meter;
and calculating the transpiration quantity of the crops to be irrigated at each time point according to the stem flow value of each time point.
4. An intelligent irrigation apparatus, the apparatus comprising:
the first acquisition module is used for acquiring the moisture content of the stems of crops to be irrigated at all time points;
the model building module is used for obtaining the transpiration amount of the crop to be irrigated at each time point, building an irrigation model according to the transpiration amount and the water content of the stems, wherein the irrigation model is the corresponding relation between the water content of the stems and the transpiration amount at each time point;
the curve fitting module is used for comparing the moisture content of the stems at each time point to obtain a daily minimum value of the moisture content of the stems, performing curve fitting on the daily minimum value and a corresponding date to obtain a fitting curve, and detecting the slope of the fitting curve;
the second acquisition module is used for acquiring the corresponding moisture content of the stems when the slope is smaller than a preset slope, and acquiring the current-day transpiration quantity corresponding to the moisture content of the stems by combining the irrigation model;
the irrigation module is used for driving a corresponding irrigation device to irrigate the crops to be irrigated and enabling the irrigation water flow to be equal to the current day transpiration;
the apparatus further comprises:
the third acquisition module is used for acquiring the voltage values of all time points of the crops to be irrigated through the moisture sensor;
the fourth acquisition module is used for acquiring a calibration formula corresponding to the crop to be irrigated, and the calibration formula is used for converting the voltage value of the sensor into the moisture content of the stems;
the calculation module is used for calculating the water content of the stems of the crops to be irrigated at each time point according to the voltage values of the crops to be irrigated at each time point and the calibration formula;
the apparatus further comprises:
a fifth acquisition module, configured to acquire a living wood section of the crop to be irrigated, and measure each attribute value of the living wood section;
the detection module is used for acquiring a preset period and periodically detecting the weight and the voltage value of the movable wood section according to the preset period;
the second calculation module is used for obtaining the constant weight of the live wood section when the weight of the live wood section is detected to be the same as the weight detected last time, and calculating the moisture content of the stems of the live wood section according to the constant weight and the attribute value;
and the fitting module is used for carrying out linear fitting according to the moisture content of the stems and the voltage value to obtain the calibration formula.
5. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the steps of the intelligent irrigation method of any of claims 1 to 3 when the program is executed by the processor.
6. A non-transitory computer readable storage medium having stored thereon a computer program, which when executed by a processor, implements the steps of the intelligent irrigation method according to any of claims 1 to 3.
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| CN113141933A (en) * | 2021-03-03 | 2021-07-23 | 甘肃省治沙研究所 | Real-time control system for drip irrigation in sunlight greenhouse planting |
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