Water conservancy irrigation system control method for breeding area
By dynamically adjusting the duration and coverage area of sprinkler irrigation in combination with rainfall, temperature and wind factors, the problem of low soil moisture uniformity in traditional breeding irrigation systems has been solved, improving the water resource utilization efficiency of breeding nurseries and the stability of the crop growth environment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- BEIJING CHENGCHENG RISHENG YUEHENG AGRICULTURAL TECHNOLOGY CO LTD
- Filing Date
- 2025-12-03
- Publication Date
- 2026-04-10
AI Technical Summary
During the breeding process, the traditional fixed sprinkler irrigation method cannot adapt to changes in environmental parameters, resulting in low soil moisture uniformity in the breeding area, which affects seedling growth and low water resource utilization efficiency.
By combining historical and predicted rainfall, temperature differences, wind effects, and other factors, the irrigation duration and coverage area of the sprinkler guns are dynamically adjusted to optimize the water conservancy irrigation system control of the seedling nursery.
It improved the uniformity of soil irrigation and the efficiency of water resource use in breeding nurseries, enhanced the adaptability and responsiveness of breeding nurseries to climate change, and ensured the stability of the crop growth environment.
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Figure CN121817062A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of automatic irrigation, in particular to a water conservancy irrigation system control method for a breeding area. BACKGROUND
[0002] In the breeding cultivation process, the seedling stage is a key period for root establishment, and a stable water environment is a necessary growth condition for seed germination. If a stable water environment condition is not provided during the breeding stage, the soil will be hardened and dry, hindering the normal growth process of seed water absorption expansion, enzyme activation and radicle breakthrough of seed coat, causing growth stagnation or abnormal seedlings, and affecting the uniformity of seedling emergence.
[0003] In the existing breeding irrigation process, a fixed irrigation time is usually used when using a sprinkling gun for irrigation. However, in actual scenarios, environmental parameters such as rainfall, temperature and wind will cause differences in the soil water environment conditions of the seedling breeding area. Using a fixed irrigation time will result in low soil moisture uniformity in the breeding area, affecting the normal growth of the breeding seedlings, and reducing the use efficiency of water resources. SUMMARY
[0004] To solve the above technical problems, the present application provides a water conservancy irrigation system control method for a breeding area to solve the existing problems.
[0005] The water conservancy irrigation system control method for a breeding area provided by the present application adopts the following technical solutions: One embodiment of the present application provides a water conservancy irrigation system control method for a breeding area, which comprises the following steps: Based on the distance from the current nearest historical rainfall at the breeding nursery location and the interval days from the current, and combining the distance from the current nearest predicted rainfall at the breeding nursery location within a future preset time period and the interval days from the current, the rainfall water storage degree of the current breeding nursery is determined; The difference between the predicted temperature and the historical temperature of the breeding nursery location within the future preset time period is utilized, combined with the rainfall water storage degree, to determine the soil water requirement degree of the current breeding nursery. The difference between the soil water requirement degrees of the current breeding nursery and its adjacent irrigation is compared, combined with the total irrigation time of each sprinkling gun at the adjacent irrigation, to obtain the target total irrigation time of each sprinkling gun of the current breeding nursery, and the coverage area of each sprinkling gun is divided into each soil region; The difference between the spraying direction of each sprinkler gun in the breeding nursery location and the real-time wind direction is analyzed, the wind influence degree of each sprinkler gun is determined in combination with the real-time wind speed, and the water yield degree of each soil region of each sprinkler gun is obtained in combination with the distance between the sprinkler gun and the soil region. The water yield degree of each soil region of each sprinkler gun is corrected based on the influence of the real-time wind direction and wind speed, and the actual water yield degree of each soil region of each sprinkler gun is obtained.
[0006] In one of the embodiments, the determination of the rainfall water storage degree comprises: The product of the interval days from the current to the nearest historical rainfall and the reciprocal of the interval days from the current is calculated at the breeding nursery location, and the normalized result of the product is taken as the groundwater storage degree of the current breeding nursery. The multiplication result of the interval days from the current to the nearest predicted rainfall and the reciprocal of the interval days from the current is calculated at the breeding nursery location in a future preset time period, and the rainfall water storage degree is positively correlated with the groundwater storage degree and the multiplication result.
[0007] In one of the embodiments, the determination of the soil water requirement degree comprises: The normalized value of the difference between the average temperature of the current breeding nursery location in a future preset time period and the average historical temperature is calculated, and the soil water requirement degree is positively correlated with the normalized value and negatively correlated with the rainfall water storage degree.
[0008] In one of the embodiments, the soil water requirement degree is the normalized result of the product of the normalized value and the reciprocal of the rainfall water storage degree.
[0009] In one of the embodiments, the determination of the target total irrigation time comprises: The ratio of the current soil water requirement degree of the breeding nursery to the soil water requirement degree before the previous irrigation behavior of the breeding nursery is calculated, and the target total irrigation time is the product of the total irrigation time of the previous irrigation behavior of each sprinkler gun of the current breeding nursery and the ratio.
[0010] In one of the embodiments, the determination of the wind influence degree comprises: The cosine value of the included angle between the spraying direction of each sprinkler gun and the real-time wind direction is determined, and the wind influence degree is negatively correlated with the cosine value and positively correlated with the real-time wind speed.
[0011] In one embodiment, the water yield degree is a normalized value of the inverse of the product of the wind effect degree and the normalized distance of the sprinkler gun.
[0012] In one embodiment, the determination of the actual water yield degree comprises: a vector formed by the real-time wind force and wind direction is denoted as a wind force vector, a vector obtained by decomposing the wind force vector along the sprinkling direction of the sprinkler gun is denoted as a first vector, a vector obtained by decomposing the wind force vector along a direction perpendicular to the sprinkling direction is denoted as a second vector, a soil region adjacent to the current soil region and pointed to by the second vector is taken as a neighboring region of the current soil region of the sprinkler gun; a sum of the modulus of the wind force vector and a preset value greater than 0 is calculated, a ratio of the modulus of the second vector to the sum is calculated and denoted as a first ratio, the actual water yield degree of the neighboring region is positively correlated with the first ratio and the water yield degree of the neighboring region, and negatively correlated with the water yield degree of the current soil region.
[0013] In one embodiment, the determination of the sprinkling duration demand degree comprises: a difference between the actual water yield degree of each soil region after one circle of sprinkling by each sprinkler gun and the average of the actual water yield degrees of all soil regions is calculated, and a normalized value of the difference is taken as a water yield decrease performance degree of each soil region after one circle of sprinkling by each sprinkler gun; the sprinkling duration demand degree is a normalized result of the inverse of the product of the actual sprinkling duration of each soil region after one circle of sprinkling by each sprinkler gun and the water yield decrease performance degree.
[0014] In one embodiment, the determination of the sprinkling duration demand degree comprises: a ratio of the target total sprinkling duration of each sprinkler gun to the number of all soil regions of each sprinkler gun is calculated and denoted as a second ratio, a sum of a value 1 and the sprinkling duration demand degrees of all soil regions is calculated, and the sprinkling duration of each soil region still required by each sprinkler gun is the product of the second ratio and the sum.
[0015] The application has at least the following beneficial effects: The application determines the rainfall water storage degree of the current breeding nursery by combining the distance from the current nearest historical rainfall at the breeding nursery location and the interval days from the current, and the distance from the current nearest predicted rainfall in a future preset time period at the breeding nursery location and the interval days from the current. The rainfall water storage degree quantifies the natural water storage potential of the breeding nursery under the current climate cycle, enhances the climate adaptability of the breeding nursery irrigation, avoids repeated water supply when the natural precipitation is sufficient, and strengthens the response ability of the breeding nursery to drought or rainstorm mutation. The soil water requirement degree of the current breeding nursery is determined by using the difference between the predicted temperature and the historical temperature of the breeding nursery location in the future preset time period, and combining the rainfall water storage degree. The soil water requirement degree corrects the influence of soil evaporation rate on water requirement, clarifies the dynamic relationship between soil water supply and demand, breaks through the limitation of traditional real-time sensors, and improves the accuracy of the judgment of the soil irrigation demand of the breeding nursery. The difference between the soil water requirement degrees of the current breeding nursery and its adjacent irrigation is compared, and the target total irrigation time of each sprinkler gun of the current breeding nursery is obtained by combining the total irrigation time of each sprinkler gun at the adjacent irrigation, so as to realize the self-adaptive adjustment of the irrigation intensity of the breeding nursery and improve the accuracy and reliability of the determination of the irrigation time of the breeding nursery. The coverage area of each sprinkler gun is evenly divided into each soil area. The difference between the irrigation direction of each sprinkler gun at the breeding nursery location and the real-time wind direction is analyzed, and the wind influence degree of each sprinkler gun is determined by combining the real-time wind speed. The water yield degree of each soil area of each sprinkler gun is obtained by combining the distance between the sprinkler gun and the soil area. The wind influence degree quantitatively evaluates the environmental interference, and the water yield degree combines the irrigation distance attenuation effect and the wind influence degree, thereby improving the effective irrigation rate of the soil of the breeding nursery. The water yield degree of each soil area of each sprinkler gun is corrected based on the influence of the real-time wind direction and wind speed, so as to obtain the actual water yield degree of each soil area of each sprinkler gun. The actual water yield degree overcomes the interference of the wind environmental factors, and improves the accuracy and reliability of the determination of the soil water receiving amount in the irrigation process of the breeding nursery. The irrigation time demand degree of each soil area of each sprinkler gun is obtained by the difference between the actual water yield degrees of each soil area and the overall soil area after one circle of irrigation of each sprinkler gun, and the actual irrigation time of each soil area, and the target total irrigation time is combined to determine the irrigation time of each soil area required by each sprinkler gun. The application overcomes the limitation of the traditional single-dimensional optimization of irrigation by integrating the time dimension and the space dimension into a unified decision, constructs a flexible irrigation strategy with anti-interference ability through real-time meteorological fusion, reduces invalid irrigation under the premise of guaranteeing the water requirement of crops, improves the water uniformity of multi-area irrigation of the breeding nursery, provides a suitable soil environment for crop growth, controls and optimizes the construction of the water conservancy system of the breeding nursery, and improves the use efficiency of water resources. BRIEF DESCRIPTION OF DRAWINGS
[0016] In order to more clearly illustrate the technical solutions and advantages of the embodiments of the present application or the prior art, the accompanying drawings required by the embodiments or the prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor based on these drawings.
[0017] Figure 1 A step flow chart of a water irrigation system control method for a breeding area provided by the present application is provided. Figure 2 A flow chart for determining the irrigation time of a sprinkler gun is provided. DETAILED DESCRIPTION
[0018] In order to further illustrate the technical means and effects adopted by the present application to achieve the predetermined invention purposes, the specific embodiments, structures, features and effects of the water irrigation system control method for a breeding area according to the present application are described in detail as follows in combination with the accompanying drawings and preferred embodiments. In the following description, different "one embodiment" or "another embodiment" do not necessarily refer to the same embodiment. In addition, the specific features, structures or characteristics in one or more embodiments can be combined in any suitable form.
[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs.
[0020] The specific scheme of the water irrigation system control method for a breeding area provided by the present application is specifically described below in combination with the accompanying drawings.
[0021] One embodiment of the present application provides a water irrigation system control method for a breeding area, specifically, the following water irrigation system control method for a breeding area is provided, please refer to Figure 1 The method comprises the following steps: Step S001, based on the distance from the current nearest historical rainfall at the breeding nursery location and the interval days from the current, combining the distance from the current nearest predicted rainfall in the future preset time period at the breeding nursery location and the interval days from the current, determining the rainfall water storage degree of the current breeding nursery.
[0022] In the process of sprinkling irrigation in a high-standard breeding nursery, a plurality of sprinkling guns are usually arranged at multiple positions of the breeding nursery, and the sprinkling guns irrigate the breeding nursery area within the range of the shooting range. The longer the sprinkling time of the sprinkling gun to the breeding nursery, the greater the watering amount of the breeding nursery soil area. In the traditional breeding nursery sprinkling irrigation process, the sprinkling time of the breeding nursery area is usually set as a fixed value. However, in the actual scene, environmental parameters such as rainfall, temperature and wind strength will affect the breeding nursery sprinkling effect. For example, rainfall and temperature affect groundwater reserves and water evaporation performance. If the difference between real-time and historical irrigation process rainfall, temperature is too large, the adaptability of the traditional fixed sprinkling time is poor. The stronger the wind, the greater the deviation of the water sprayed by the sprinkling gun, which further leads to poor irrigation effect of the traditional fixed sprinkling time. Therefore, the embodiment analyzes the influence of multiple environmental parameters on the breeding nursery sprinkling in the actual scene.
[0023] Firstly, the embodiment evaluates the real-time groundwater reserve degree of the breeding nursery according to the historical rainfall of the breeding nursery. When there is rainfall in the weather of the breeding nursery, rainwater will infiltrate into the soil and be stored in the ground, thereby continuously maintaining the soil humidity of the breeding nursery. Therefore, in order to more accurately determine the sprinkling time of the breeding nursery during real-time irrigation, firstly, the rainfall amount of the target breeding nursery at the time closest to the current time in the past is analyzed, and the real-time groundwater reserve degree of the breeding nursery is evaluated. Specifically: Obtain the rainfall data of the target breeding nursery at the time closest to the current time in the past, denoted as P; Obtain the interval days of the target breeding nursery from the time closest to the current time in the past to the current time, denoted as ; The greater the rainfall P of the target breeding nursery at the time closest to the current time in the past, and the smaller the interval days from the time closest to the current time in the past to the current time, the more groundwater reserves in the soil of the current breeding nursery. Therefore, the embodiment calculates the groundwater reserve degree of the current breeding nursery during irrigation, and the specific calculation method is: ; In the formula, G is the groundwater reserve degree of the current breeding nursery during irrigation, and norm() is a normalization function. It should be noted that if the time closest to the current time in the past is the same day, i.e. , the embodiment sets the groundwater reserve degree of the current breeding nursery during irrigation to the maximum value 1. The norm() normalization function of the embodiment is normalized by using the maximum-minimum value normalization method based on historical data.
[0024] In consideration of the possibility of rainfall after the breeding nursery irrigation in a future period of time, the breeding nursery has a high risk of water oversaturation, which causes the death of crops. Therefore, in this embodiment, the rainfall storage degree of the current breeding nursery irrigation is determined by combining the groundwater storage degree with the predicted rainfall performance, specifically as follows: Firstly, in this embodiment, one week, i.e., 7 days, is taken as the analysis period. If there is rainfall in the subsequent one week of the current breeding nursery irrigation, the irrigation amount of the current breeding nursery should consider the future rainfall performance to prevent the phenomenon of soil water oversaturation. Therefore, the current rainfall storage degree of the breeding nursery is obtained by combining the predicted rainfall performance with the groundwater storage degree.
[0025] The latest predicted rainfall amount in the subsequent one week of the current breeding nursery irrigation is obtained, denoted as ; At the same time, the interval days between the latest rainfall and the current time in the subsequent one week of the current breeding nursery irrigation are obtained, denoted as ; It should be understood that if the predicted rainfall amount in the subsequent one week of the target breeding nursery is larger, and the interval days between the latest rainfall and the current time are shorter, it means that the soil of the target breeding nursery is more likely to quickly obtain a large amount of rainfall water supplement in the subsequent one week. At the same time, if the current groundwater storage degree is higher, it means that the rainfall storage performance of the target breeding nursery is higher. Therefore, the rainfall storage degree of the current breeding nursery irrigation is calculated, and the specific calculation method is as follows: ; in the formula, is the rainfall storage degree of the current breeding nursery irrigation.
[0026] It should be noted that if there is no rainfall in the subsequent one week of the current breeding nursery irrigation, the groundwater storage degree of the current breeding nursery is directly recorded as the rainfall storage degree of the breeding nursery.
[0027] Step S002, the predicted temperature difference between the breeding nursery location and the historical temperature in a future preset time period is used to determine the soil water requirement degree of the current breeding nursery in combination with the rainfall storage degree. The difference between the soil water requirement degrees of the current breeding nursery and its adjacent irrigation is compared, and the target total irrigation time of each sprinkler gun of the current breeding nursery is obtained in combination with the total irrigation time of each sprinkler gun at the adjacent irrigation. The coverage area of each sprinkler gun is divided into soil regions.
[0028] Furthermore, the weather temperature at the location of the breeding nursery will also affect the soil moisture in the breeding nursery. When the temperature at the location of the breeding nursery is high, the soil moisture in the breeding nursery will evaporate and be lost rapidly, and the soil moisture reserves will also be depleted rapidly. Therefore, when measuring the moisture reserves in the soil of the breeding nursery, the weather temperature at the location of the breeding nursery should also be taken into account.
[0029] This embodiment obtains the predicted daily temperature data for the week following the current irrigation of the breeding nursery, as well as the historical daily temperature data for the week preceding the current irrigation. The water evaporation trend during the current irrigation is determined by comparing the predicted and historical temperature data. The specific calculation method is as follows: In the formula, C represents the water evaporation trend during the current irrigation of the breeding nursery, C represents the average temperature of all days in the week following the current irrigation of the breeding nursery, and F represents the average temperature of all days in the week preceding the current irrigation of the breeding nursery.
[0030] If the temperature is higher after the current irrigation of the breeding nursery, the water evaporation in the breeding nursery soil will be greater, and the water evaporation trend will be greater.
[0031] The lower the current rainfall water storage in the target breeding nursery and the higher the water evaporation trend, the higher the current soil water demand for irrigation. This means the breeding nursery needs more irrigation time. Therefore, this embodiment calculates the current soil water demand of the breeding nursery using the following method: In the formula, This represents the soil moisture requirement during the current irrigation of the breeding nursery. It should be noted that when Q=0, it indicates a prolonged drought. In this embodiment, the soil moisture requirement is set to the maximum value of 1.
[0032] Using the same method as for obtaining soil water requirements during the current irrigation of the breeding nursery, the soil water requirements during the previous irrigation of the breeding nursery were obtained and denoted as . Simultaneously, the total irrigation time of each sprinkler gun during the previous irrigation of the breeding nursery is obtained and denoted as D. The area covered by the water droplets after each sprinkler gun has sprayed a circle is divided into soil regions. In this embodiment, the area covered by the water droplets after each sprinkler gun has sprayed a circle is divided into 10 soil regions. The implementer can set it according to the actual situation. This embodiment does not impose any restrictions.
[0033] It should be understood that in this embodiment, each sprinkler gun is a rotating sprayer, that is, when the sprinkler gun is spraying, the area covered by the water droplets is a circular area with the sprinkler gun as the center and the range of the sprinkler gun as the radius. The total spraying time of the sprinkler gun is the sum of the spraying time of all soil areas of the sprinkler gun.
[0034] The more the target breeding nursery is higher in soil water content at the current irrigation phase than at its previous irrigation phase, the more the current breeding nursery has a greater demand for the amount of sprinkling water than the most recent one, the longer the total sprinkling time of the current breeding nursery should be than the most recent irrigation, so the embodiment calculates the target total sprinkling time of each sprinkling gun of the current breeding nursery, and the specific calculation method is: ; in the formula, is the target total sprinkling time of each sprinkling gun of the current breeding nursery.
[0035] Step S003, analyze the difference between the sprinkling direction of each sprinkling gun in the breeding nursery location and the real-time wind direction, determine the wind force influence degree of each sprinkling gun in real time, and combine the measurement distance between the sprinkling gun and the soil area to obtain the water yield degree of the current soil area of each sprinkling gun; based on the influence of real-time wind direction and wind speed, the water yield degree of each soil area of each sprinkling gun is corrected to obtain the actual water yield degree of each soil area of each sprinkling gun.
[0036] In the process of sprinkling by the sprinkling gun on the breeding nursery, under normal circumstances, the water droplets sprayed by the sprinkling gun complete parabolic motion in the air and then reach the ground, but the wind force will change the trajectory of the water droplets to some extent, so that it deviates from the soil area where it should fall. Therefore, when the sprinkling gun sprinkles any soil area of the breeding nursery, due to the action of wind force, the adjacent area of the any soil area may also receive water, so the embodiment installs a wind speed and direction sensor on each sprinkling gun to collect the wind speed and direction at each sprinkling gun in real time, and based on the wind speed and direction, analyzes the water yield of each soil area of the sprinkling gun under the action of wind force.
[0037] Firstly, taking any soil area J of any sprinkling gun as an example, taking the soil area J as the current soil area of the sprinkling gun, obtaining the included angle between the current spraying direction of the sprinkling gun and its wind direction, combining the corresponding wind speed, calculating the wind force influence degree of the current sprinkling gun, and the specific calculation method is: ; in the formula, Z is the wind force influence degree of the current each sprinkling gun, v is the wind speed of the current each sprinkling gun, is the included angle between the current spraying direction of the current each sprinkling gun and its wind direction, and cos is the trigonometric cosine function.
[0038] It should be understood that if the included angle between the current spraying direction of the current each sprinkling gun and its wind direction is larger, and the wind speed at each sprinkling gun is larger, the influence deviation of the wind force on the current soil area of the sprinkling gun is larger, and it is easier to cause the sprinkling water flow of the sprinkling gun to deviate from the set direction and fall into the adjacent area of the soil area J, so the wind force influence degree is larger.
[0039] In addition, the range of the sprinkler gun when spraying is theoretically the farthest distance from the sprinkler gun nozzle to the soil area. Because the water is concentrated near the nozzle when the sprinkler gun sprays, the water will gradually become small water droplets after being sprayed out of the nozzle, showing a misting effect. Therefore, the farther the distance between the soil area and the sprinkler gun, the greater the real-time wind effect of the sprinkler gun on the soil area. Taking the current soil area J as an example, the actual irrigation amount received by the soil area J will be lower than the theoretical irrigation amount that should be received. Therefore, the embodiment calculates the water yield degree of the current soil area J of any sprinkler gun, and the specific calculation method is as follows: ; in the formula, is the water yield degree of the current soil area J of any sprinkler gun, R is the distance between the soil area J and the nozzle of the sprinkler gun, and Z1 is the wind effect degree of the current sprinkler gun. It should be noted that during the calculation of the water yield degree, if the denominator is 0, to avoid meaningless, the embodiment sets the water yield degree to the maximum value 1.
[0040] At the same time, due to the deviation of the wind direction and the spraying direction of the sprinkler gun, the deviated water droplets will fall into the adjacent area of the soil area J. To obtain the adjacent area of the soil area J, the embodiment takes the wind speed of the current sprinkler gun as the module and the wind direction as the direction to construct the wind vector of the current sprinkler gun. The vector obtained by decomposing the wind vector along the spraying direction of the sprinkler gun is recorded as the first vector, and the vector obtained by decomposing along the perpendicular direction of the spraying direction is recorded as the second vector. The soil area pointed to by the second vector and adjacent to the current soil area J is taken as the adjacent area J1 of the current soil area J of the sprinkler gun.
[0041] Because part of the water will deviate to the adjacent area J1 when the current soil area J is sprayed, the water yield of the adjacent area J1 also needs to be analyzed, that is, the water yield of the adjacent area J1 not only includes the water received when it is sprayed, but also includes the water deviated to the adjacent area J1 due to the wind effect when the soil area J is sprayed. Based on the above analysis, the embodiment calculates the actual water yield degree of the adjacent area J1, and the specific calculation method is as follows: ; in the formula, is the actual water yield degree of the adjacent area J1, is the water yield degree of the current soil area J of any sprinkler gun, is the second vector, is the module of the second vector, K is the wind vector of the current sprinkler gun, is the module of the wind vector of the current sprinkler gun, a water yield degree of a neighboring region J1, is a preset value greater than 0, to avoid a denominator of 0, in the embodiment , the implementer can set it according to the actual situation, and the embodiment does not limit it. The is recorded as a first ratio.
[0042] It should be understood that the larger the second vector is, the greater the difference between the wind direction and the sprinkling direction of the sprinkling gun is, the greater the deviation of the sprinkling gun caused by the wind force is, that is, the more water the neighboring region J1 obtains, and the greater the actual water yield degree is. In addition, the greater the water yield degree of the soil region J is, the more water falls into the soil region J when the sprinkling gun is sprinkling, and the less water falls into the neighboring region of the soil region J, so the actual water yield degree of the neighboring region J1 is smaller.
[0043] It should be noted that when the sprinkling gun is sprinkling, each soil region can be a neighboring region of another soil region, therefore, the embodiment uses the same calculation method as the actual water yield degree of the neighboring region J1 to obtain the actual water yield degree of each soil region of the current sprinkling gun.
[0044] Step S004, through the difference between the actual water yield degrees of each soil region and the whole soil region after the current each sprinkling gun sprays a circle, and the actual sprinkling duration of each soil region, the sprinkling duration demand degree of each soil region of the current each sprinkling gun is obtained, and the target total sprinkling duration is combined to determine the sprinkling duration of each soil region that the current each sprinkling gun still needs, to optimize the construction control of the breeding nursery water system.
[0045] In the embodiment, when the current target breeding nursery is sprinkled, for each sprinkling gun, it is divided into the first round of sprinkling and the subsequent sprinkling. The first round of sprinkling is to make each sprinkling gun spray a circle without timing and repetition first, and then based on the difference between the actual water yield degrees of each soil region after the first round of sprinkling, the sprinkling duration of each soil region that still needs is determined.
[0046] It should be noted that the duration of the first round of sprinkling of each sprinkling gun is less than the target total sprinkling duration of each sprinkling gun.
[0047] For each sprinkling gun, after the first round of sprinkling is completed, if the actual water yield degree of a certain soil region is lower than that of other soil regions, then the sprinkling duration of the soil region should be increased in the subsequent sprinkling duration adjustment, therefore, the embodiment calculates the water yield degree of each soil region after the current each sprinkling gun performs the first round of sprinkling, and the specific calculation method is: ; in the formula, is the water yield degree of the i-th soil region after the current each sprinkling gun performs the first round of sprinkling, This represents the actual water gain of the i-th soil region after the first round of irrigation by each sprinkler gun. This represents the average actual water yield of all soil areas after the first round of irrigation by each sprinkler gun.
[0048] It should be understood that the smaller the actual water gain of the i-th soil region, the less water the i-th soil region receives, and the more necessary it is to increase the duration of sprinkler irrigation for the i-th soil region to ensure the uniformity of soil moisture in the breeding nursery.
[0049] Furthermore, based on the degree of decrease in soil moisture in each area after the first round of sprinkler irrigation, and the duration of the first round of sprinkler irrigation in each soil area, the required duration of sprinkler irrigation for each soil area after the first round of sprinkler irrigation by each sprinkler gun is determined. The specific calculation method is as follows: In the formula, Let t be the irrigation duration requirement for the i-th soil region after the first round of irrigation by each sprinkler gun, and t be the irrigation duration of the first round of irrigation by each sprinkler gun in the i-th soil region. It should be noted that, in the process of calculating the irrigation duration requirement, if the denominator is 0, to avoid meaninglessness, this embodiment sets the irrigation duration requirement to the maximum value of 1.
[0050] It should be understood that if the irrigation duration for the i-th soil region in the first round of sprinkler irrigation is... The shorter the length, and the lower the soil moisture content in the i-th soil region during the first round of sprinkler irrigation, the better the performance. The lower the value, the higher the water demand of the i-th soil region during subsequent sprinkler irrigation, and the greater the need to increase the sprinkler irrigation time for the i-th soil region. Therefore, the greater the demand for sprinkler irrigation time.
[0051] Finally, for each sprinkler gun, calculate the ratio of the target total irrigation time for each sprinkler gun to the number of all soil areas, denoted as the second ratio, as the average irrigation time for each soil area of each sprinkler gun. Combined with the irrigation time requirement of each soil area, determine the remaining irrigation time required for each sprinkler gun after the first round of irrigation in each soil area. The specific calculation method is as follows: In the formula, The remaining irrigation time for the i-th soil area after the first round of irrigation by each sprinkler gun is completed. Let be the average irrigation duration for the i-th soil region of each sprinkler gun. The flowchart for determining the irrigation duration for each sprinkler gun is shown below. Figure 2 As shown.
[0052] It should be understood that the greater the demand for the irrigation time length of the i-th soil area, the more the average irrigation time length of the i-th soil area needs to be extended, and finally the greater the irrigation time length of the i-th soil area. Thus, the dynamic adjustment of the irrigation time length of each soil area of each sprinkler is achieved, the uniformity of the breeding nursery irrigation is improved, and the growth of crops is ensured.
[0053] It should be noted that when the sum of the irrigation time lengths of all soil areas of each sprinkler reaches the target total irrigation time length of each sprinkler, the irrigation of the breeding nursery is stopped.
[0054] It should be noted that the above sequence of the embodiments of the present application is only for description, and does not represent the advantages and disadvantages of the embodiments. The above describes specific embodiments of the present application. In addition, the processes depicted in the drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multi-task processing and parallel processing are possible or can be advantageous.
[0055] Each of the embodiments in the present specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other. Each embodiment mainly describes the differences from other embodiments.
[0056] The above-described embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; the technical solutions described in the above embodiments are modified, or some technical features are replaced, without changing the essence of the corresponding technical solutions, which are within the scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application.
Claims
1. A water irrigation system control method for a breeding area, characterized by, The method comprises the following steps: Based on the distance from the current nearest historical rainfall at the breeding nursery location and the interval days from the current, combined with the distance from the current nearest predicted rainfall in the future preset time period at the breeding nursery location and the interval days from the current, the rainfall water storage degree of the current breeding nursery is determined; The difference between the predicted temperature and the historical temperature of the breeding nursery location in the future preset time period is utilized, combined with the rainfall water storage degree, to determine the soil water requirement degree of the current breeding nursery; by comparing the difference between the soil water requirement degrees of the current breeding nursery and its adjacent irrigation, combined with the total irrigation time of each sprinkler gun at the adjacent irrigation, the target total irrigation time of each sprinkler gun of the current breeding nursery is obtained, and the coverage area of each sprinkler gun is divided into soil regions; The difference between the sprinkling direction of each sprinkler gun and the real-time wind direction at the breeding nursery location is analyzed, combined with the real-time wind speed, to determine the wind force influence degree of each sprinkler gun, combined with the measurement distance between the sprinkler gun and the soil region, to obtain the water yield degree of the current soil region of each sprinkler gun; based on the influence of the real-time wind direction and wind speed, the water yield degree of each soil region of each sprinkler gun is corrected to obtain the actual water yield degree of each soil region of each sprinkler gun; Through the difference between the actual water yield degrees of each soil region and the overall soil region after one circle of irrigation by each sprinkler gun, and the actual irrigation time of each soil region, the irrigation time requirement degree of each soil region of each sprinkler gun is obtained, combined with the target total irrigation time, to determine the irrigation time of each soil region of each sprinkler gun, so as to optimize the construction control of the breeding nursery water conservancy system.
2. The water irrigation system control method for a breeding area of claim 1, wherein, The determination of the rainfall water storage degree comprises: The product of the inverse of the distance from the current nearest historical rainfall at the breeding nursery location and the interval days from the current is calculated, and the normalized result of the product is taken as the groundwater storage degree of the current breeding nursery; The multiplication result of the inverse of the distance from the current nearest predicted rainfall in the future preset time period at the breeding nursery location and the interval days from the current is calculated, and the rainfall water storage degree is positively correlated with the multiplication result and the groundwater storage degree.
3. The method for controlling a water irrigation system for a breeding area according to claim 1, wherein, The determination of the soil water requirement degree comprises: The normalized value of the difference between the average temperature in the future preset time period and the historical average temperature at the current breeding nursery location is calculated, and the soil water requirement degree is positively correlated with the normalized value and negatively correlated with the rainfall water storage degree.
4. The method for controlling a water irrigation system for a breeding area according to claim 3, wherein The soil water requirement degree is the normalized result of the product of the normalized value and the inverse of the rainfall water storage degree.
5. The method for controlling a water irrigation system for a breeding area according to claim 1, wherein, The determination of the target total irrigation time comprises: The ratio of the soil water requirement degree of the current breeding nursery to the soil water requirement degree before the previous irrigation behavior of each sprinkler gun of the current breeding nursery is calculated, and the target total irrigation time is the product of the total irrigation time of the previous irrigation behavior of each sprinkler gun of the current breeding nursery and the ratio.
6. The method for controlling a water irrigation system for a breeding area according to claim 1, wherein, The determination of the wind force influence degree comprises: The cosine value of the included angle between the sprinkling direction of each sprinkler gun and the real-time wind direction is determined, and the wind force influence degree is negatively correlated with the cosine value and positively correlated with the real-time wind speed.
7. The method for controlling a water irrigation system for a breeding area according to claim 1, wherein, The water yield degree is the normalized value of the inverse of the product of the wind force influence degree and the measurement distance of the sprinkler gun.
8. The method for controlling a water irrigation system for a breeding area according to claim 1, wherein, The determination of the actual moisture yield degree comprises: a vector composed of the real-time wind force and wind direction is recorded as a wind force vector, a vector obtained by decomposing the wind force vector along the sprinkling direction of the sprinkling gun is recorded as a first vector, a vector obtained by decomposing the wind force vector along a direction perpendicular to the sprinkling direction is recorded as a second vector, a soil region adjacent to the current soil region and pointed to by the second vector is taken as a neighboring region of the current soil region of the sprinkling gun; a sum of a modulus value of the wind force vector and a preset value greater than 0 is calculated, a ratio of a modulus value of the second vector to the sum is calculated and recorded as a first ratio, the actual moisture yield degree of the neighboring region is positively correlated with the first ratio and the moisture yield degree of the neighboring region, and negatively correlated with the moisture yield degree of the current soil region.
9. The method for controlling a water irrigation system for a breeding area according to claim 1, wherein, The determination of the sprinkling duration demand degree comprises: a subtraction result of the actual moisture yield degree of each soil region after one circle of sprinkling of each sprinkling gun from a mean value of the actual moisture yield degrees of all soil regions is calculated, and a normalized value of the subtraction result is taken as a moisture decreasing performance degree of each soil region after one circle of sprinkling of each sprinkling gun. The sprinkling duration demand degree is a normalized result of an inverse of a product of the actual sprinkling duration of each soil region after one circle of sprinkling of each sprinkling gun and the moisture decreasing performance degree.
10. The method for controlling a water irrigation system for a breeding area according to claim 1, wherein, The determination of the current sprinkling duration of each sprinkling gun in each soil region for optimizing the construction control of the breeding nursery water system comprises: a ratio of a target total sprinkling duration of each sprinkling gun to a number of all soil regions of each sprinkling gun is calculated and recorded as a second ratio, a sum of a value 1 and the sprinkling duration demand degrees of all soil regions is calculated, and the current sprinkling duration of each sprinkling gun in each soil region is a product of the second ratio and the sum.