CN116472945B - Highland barley water efficient utilization system and control method - Google Patents
Highland barley water efficient utilization system and control method Download PDFInfo
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- CN116472945B CN116472945B CN202310614969.7A CN202310614969A CN116472945B CN 116472945 B CN116472945 B CN 116472945B CN 202310614969 A CN202310614969 A CN 202310614969A CN 116472945 B CN116472945 B CN 116472945B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 191
- 235000007340 Hordeum vulgare Nutrition 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims abstract description 13
- 240000005979 Hordeum vulgare Species 0.000 title 1
- 239000013307 optical fiber Substances 0.000 claims abstract description 351
- 230000002262 irrigation Effects 0.000 claims abstract description 163
- 238000003973 irrigation Methods 0.000 claims abstract description 163
- 239000002689 soil Substances 0.000 claims abstract description 136
- 241000209219 Hordeum Species 0.000 claims abstract description 53
- 238000001514 detection method Methods 0.000 claims abstract description 39
- 230000033001 locomotion Effects 0.000 claims description 37
- 230000009471 action Effects 0.000 claims description 26
- 238000010521 absorption reaction Methods 0.000 claims description 18
- 230000005484 gravity Effects 0.000 claims description 18
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000008569 process Effects 0.000 abstract description 3
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 235000005911 diet Nutrition 0.000 description 1
- 230000000378 dietary effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G25/00—Watering gardens, fields, sports grounds or the like
- A01G25/16—Control of watering
- A01G25/167—Control by humidity of the soil itself or of devices simulating soil or of the atmosphere; Soil humidity sensors
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G25/00—Watering gardens, fields, sports grounds or the like
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/108—Rainwater harvesting
Abstract
The invention provides a highland barley water high-efficiency utilization system and a control method, wherein the system comprises a control device, a watering device, an optical fiber deformation sensor and a water detection utilization device, wherein the water detection utilization device comprises a water collecting tank parallel to highland barley in adjacent rows, a detection unit is arranged in the water collecting tank and comprises a supporting block, a telescopic rod and a sponge block, the telescopic rod is arranged between the tank bottom and the supporting block, the sponge block is fixed on the upper surface of the supporting block, and an optical fiber in the optical fiber deformation sensor passes through the supporting block; in the irrigation process, the sponge block absorbs water, the supporting block moves downwards, the optical fiber section in the supporting block deforms, and the optical fiber deformation sensor sends the detected optical fiber deformation to the control device; the control device determines soil humidity according to the optical fiber deformation detected by the optical fiber deformation sensor, controls the irrigation device according to the soil humidity, and controls the bottom of the water collecting tank to move upwards out of the tank edge of the water collecting tank after irrigation is completed so as to irrigate water in the water collecting tank to two sides of the water collecting tank.
Description
Technical Field
The invention belongs to the field of irrigation, and particularly relates to a highland barley water efficient utilization system and a control method.
Background
Highland barley is a crop commonly cultivated in southwest plateau areas of China. With the adjustment of the dietary structure and the industrial structure of people, the processing and eating status of highland barley are increasingly improved. Since highland barley grows in the plateau area, the large-scale planting of highland barley is limited by the growth environment, and enough water is needed to be kept in the highland barley growth process, so that the problem that consideration is important at present is how to fully and effectively utilize water resources to irrigate the highland barley in the plateau area with deficient water resources.
Disclosure of Invention
The invention provides a highland barley water high-efficiency utilization system and a control method, which aim to solve the problem of low water utilization efficiency during highland barley irrigation.
According to a first aspect of the embodiment of the invention, a highland barley water high-efficiency utilization system is provided, which comprises a control device, a watering device, an optical fiber deformation sensor and a water detection utilization device, wherein the watering device and the optical fiber deformation sensor are respectively connected with the control device, the water detection utilization device is arranged between two adjacent rows of highland barley, the water detection utilization device comprises a water collecting tank parallel to the highland barley in the corresponding row, the water collecting tank is provided with an opening at the upper part and is provided with a closed end at the two ends, the water collecting tank is divided into a plurality of sections communicated with each other, each section is internally provided with a detection unit, each detection unit comprises a supporting block, a telescopic rod and a sponge block, the first end of the telescopic rod is fixed at the bottom of the water collecting tank, the second end of the telescopic rod is connected with the lower surface of the supporting block parallel to the bottom of the water collecting tank, the sponge block is fixed on the upper surface of the supporting block, and sensing optical fibers in the optical fiber deformation sensor sequentially penetrate through each supporting block in the water collecting tank, and each supporting block is fixedly connected with the optical fiber section in the water collecting tank;
In irrigation, the sponge block in the detection unit absorbs water, the gravity of the sponge block absorbing water is increased, the telescopic rod is contracted under the action of the gravity, and the sponge block and the supporting block move downwards, so that the optical fiber section in the supporting block is deformed, wherein the water absorption capacity in the sponge block is used for reflecting soil humidity, the water absorption capacity of the sponge block is different, the downward movement distance of the supporting block is correspondingly different, and the deformation of the optical fiber section in the supporting block is different; the optical fiber deformation sensor sends the detected optical fiber deformation to the control device;
the control device locally stores the corresponding relation between the optical fiber deformation and the soil humidity, determines the soil humidity according to the optical fiber deformation detected by the optical fiber deformation sensor, controls the irrigation device according to the determined soil humidity, and controls the water detection and utilization device to move the bottom of the water collecting tank upwards until the water is moved out from two tank edges of the water collecting tank after irrigation is completed, so that water in the water collecting tank is irrigated to soil on two sides.
In an optional implementation manner, the control device controls the irrigation device to irrigate highland barley corresponding to the irrigation area, determines the deformation of the optical fiber section in the irrigation area in the first optical fiber deformation at this time according to the deformation of each first optical fiber received after the irrigation device starts to irrigate, and judges whether the soil humidity corresponding to the deformation of each optical fiber section in the irrigation area reaches the preset soil humidity or not according to the reference position of the sensing optical fiber, wherein the reference point is the absolute deformation-free reference position in the sensing optical fiber, if so, the irrigation device is controlled to stop irrigation, otherwise, the irrigation device is controlled to continue irrigation;
The control device is used for respectively judging whether the deformation size of each optical fiber section in the irrigation area in the second optical fiber deformation is equal to the deformation size in the last second optical fiber deformation or not according to each second optical fiber deformation received after the irrigation device is controlled to stop irrigation, if so, the corresponding soil humidity is found out according to the deformation size of the optical fiber section in the second optical fiber deformation, and the soil humidity is used as the soil actual humidity of the area corresponding to the optical fiber section.
In another alternative implementation manner, the detection unit further comprises a spring matched with the telescopic rod, the spring is fixed on the bottom of the water collecting tank, the telescopic rod is arranged in the spring in a penetrating mode, the spring can be stretched up and down, and the initial height difference of the telescopic rod and the spring is used for indicating the distance that the sponge block and the supporting block should move downwards in order to achieve the preset soil humidity;
when the supporting block moves downwards to be in contact with the spring, if the sponge block further absorbs moisture, the weight of the sponge block further increases, the supporting block moves downwards to compress the spring under the action of the gravity of the sponge block, the supporting block moves up and down back and forth under the action of the elasticity of the spring, and correspondingly, the optical fiber section in the supporting block also deforms in the up and down back and forth motion;
The control device controls the irrigation device to irrigate highland barley corresponding to the irrigation area, determines the deformation of each optical fiber section in the irrigation area relative to a reference point in the sensing optical fiber in the first optical fiber deformation for the first time, wherein the reference point is a reference position in the sensing optical fiber, which is absolutely free from deformation, judges whether the soil humidity corresponding to the deformation of each optical fiber section in the irrigation area reaches the preset soil humidity, if so, controls the irrigation device to stop irrigation, otherwise, controls the irrigation device to continue irrigation;
the control device aims at controlling second optical fiber deformation received after the pouring device stops pouring, the reference point is utilized to align the second optical fiber deformation received each time, for each optical fiber section of the sensing optical fiber in the pouring area, whether the deformation size of the optical fiber section relative to the reference point in the second optical fiber deformation is equal to the deformation size of the optical fiber section relative to the reference point in the last second optical fiber deformation or not is judged, if yes, the up-and-down movement of the optical fiber section corresponding to the supporting block is balanced, at the moment, the deformation size of the optical fiber section relative to the reference point in the second optical fiber deformation is taken as final deformation, the difference value of the deformation size of the optical fiber section in the second optical fiber deformation each time and the final deformation is calculated, the maximum difference value in the calculated difference values is determined, the soil humidity corresponding to the maximum difference value is found out locally, and the soil humidity is taken as the soil actual humidity of the area corresponding to the optical fiber section.
In another optional implementation manner, the detection unit further comprises a first pulley, a first baffle, a second pulley and a second baffle, for each section of the water collecting tank, a first gate frame and a second gate frame extend upwards from the tank bottom at the starting position and the ending position of the section respectively, the first pulley is fixed on one side of the first gate frame facing the tank bottom, the second pulley is fixed on one side of the second gate frame facing the tank bottom, the first baffle and the second baffle are vertically arranged and are respectively used for separating the front section and the rear section adjacent to the section, a first pull rope connected with the first baffle bypasses the first pulley to be fixedly connected with a supporting block in the detection unit, a second pull rope connected with the second baffle bypasses the second pulley to be fixedly connected with the supporting block, the first baffle is in contact with two sides of the first gate frame, two sides of the first gate frame are in contact with two tank sides of the water collecting tank, the second baffle is in contact with two sides of the second gate frame, and the two sides of the second gate frame are in contact with the two tank sides of the water collecting tank;
in the initial state, the first baffle and the second baffle are both abutted with the bottom of the tank, and the first pull rope and the second pull rope are both in a straightening state; when the supporting block moves downwards, the first baffle is pulled up through the first pull rope, the second baffle is pulled up through the second pull rope, and the first baffle and the second baffle are separated from the bottom of the tank, so that all sections are communicated; after the supporting block moves downwards to be abutted with a spring under the supporting block, the supporting block continues to move downwards, the supporting block moves back and forth up and down under the action of the elasticity of the spring and drives the first baffle plate and the second baffle plate to move back and forth up and down, wherein the more the sponge block absorbs the water, the larger the amplitude of the back and forth up and down movement of the supporting block driving the first baffle plate and the second baffle plate under the action of the elasticity of the spring, and the more the water collected in the section is easily transferred into the adjacent section.
According to a second aspect of the embodiment of the present invention, there is also provided a control method of the highland barley water efficient utilization system, including:
step S110, in irrigation, a sponge block in a detection unit absorbs water, the gravity of the sponge block absorbing the water is increased, a telescopic rod is contracted under the action of the gravity, and the sponge block and a supporting block move downwards, so that an optical fiber section in the supporting block is deformed, wherein the water absorption capacity in the sponge block is used for reflecting soil humidity, the water absorption capacity of the sponge block is different, the downward movement distance of the supporting block is correspondingly different, and the deformation of the optical fiber section in the supporting block is different;
step S120, the optical fiber deformation sensor sends the detected optical fiber deformation to the control device;
and S130, the control device locally stores the corresponding relation between the optical fiber deformation and the soil humidity, determines the soil humidity according to the optical fiber deformation detected by the optical fiber deformation sensor, controls the irrigation device according to the determined soil humidity, and controls the water detection and utilization device to move the bottom of the water collecting tank upwards until the water is moved out from two tank edges of the water collecting tank after irrigation is completed, so that water in the water collecting tank is irrigated to soil on two sides.
In another alternative implementation manner, the step S130 specifically includes:
the control device controls the irrigation device to irrigate highland barley corresponding to the irrigation area, and determines the deformation of the optical fiber section in the irrigation area in the first optical fiber deformation according to the deformation of each first optical fiber received after the irrigation device starts to irrigate, wherein the reference point is a reference position in the sensing optical fiber, which is absolutely not deformed, and judges whether the soil humidity corresponding to the deformation of each optical fiber section in the irrigation area reaches the preset soil humidity, if so, the irrigation device is controlled to stop irrigation, otherwise, the irrigation device is controlled to continue irrigation;
the control device is used for respectively judging whether the deformation size of each optical fiber section in the irrigation area in the second optical fiber deformation is equal to the deformation size in the last second optical fiber deformation or not according to each second optical fiber deformation received after the irrigation device is controlled to stop irrigation, if so, the corresponding soil humidity is found out according to the deformation size of the optical fiber section in the second optical fiber deformation, and the soil humidity is used as the soil actual humidity of the area corresponding to the optical fiber section.
In another alternative implementation manner, after the supporting block moves downwards to be in contact with the spring, if the sponge block further absorbs moisture, the weight of the sponge block further increases, under the action of gravity of the sponge block, the supporting block moves downwards to compress the spring, and under the action of elasticity of the spring, the supporting block moves back and forth up and down, and correspondingly, the optical fiber section in the supporting block also deforms in a back and forth movement up and down;
the step S130 specifically includes:
the control device controls the irrigation device to irrigate highland barley corresponding to the irrigation area, determines the deformation of each optical fiber section in the irrigation area relative to a reference point in the sensing optical fiber in the first optical fiber deformation for the first time, wherein the reference point is a reference position in the sensing optical fiber, which is absolutely free from deformation, judges whether the soil humidity corresponding to the deformation of each optical fiber section in the irrigation area reaches the preset soil humidity, if so, controls the irrigation device to stop irrigation, otherwise, controls the irrigation device to continue irrigation;
the control device aims at controlling second optical fiber deformation received after the pouring device stops pouring, the reference point is utilized to align the second optical fiber deformation received each time, for each optical fiber section of the sensing optical fiber in the pouring area, whether the deformation size of the optical fiber section relative to the reference point in the second optical fiber deformation is equal to the deformation size of the optical fiber section relative to the reference point in the last second optical fiber deformation or not is judged, if yes, the up-and-down movement of the optical fiber section corresponding to the supporting block is balanced, at the moment, the deformation size of the optical fiber section relative to the reference point in the second optical fiber deformation is taken as final deformation, the difference value of the deformation size of the optical fiber section in the second optical fiber deformation each time and the final deformation is calculated, the maximum difference value in the calculated difference values is determined, the soil humidity corresponding to the maximum difference value is found out locally, and the soil humidity is taken as the soil actual humidity of the area corresponding to the optical fiber section.
The beneficial effects of the invention are as follows:
1. according to the invention, an electronic humidity sensor is not adopted, an optical fiber humidity sensor is not adopted, the humidity of soil is reflected by the moisture absorbed by the sponge block, the weight change of the sponge block after the sponge block absorbs the moisture can enable the supporting block and the optical fiber section in the supporting block to move downwards, so that the deformation of the optical fiber section is brought, the humidity of the soil can be reflected according to the deformation of the optical fiber section, and the optical fiber adopted by the optical fiber deformation sensor belongs to a common optical fiber, so that the stability is good and the service life is long; according to the invention, each supporting block is fixedly connected with the optical fiber section in the supporting block, so that the optical fiber deformation sensor can conveniently distinguish the optical fiber sections in each supporting block; according to the invention, the water collecting tank is arranged, water in different areas of the row of highland barley is collected into the tank in a separated mode, and all sections in the tank are communicated, so that water flow in all sections in the tank is balanced, and after water in the water collecting tank is irrigated to soil on two sides of the water collecting tank, the water difference in different areas can be reduced, the water is effectively and fully utilized, and the soil humidity difference of the row of highland barley is reduced;
2. the invention judges whether the soil humidity of the area where each optical fiber section is positioned reaches the preset soil humidity based on the ductility of the sensing optical fiber and utilizes the deformation detected by the sensing optical fiber, and controls the irrigation device to stop irrigation when the soil humidity reaches the preset soil humidity; in addition, when the supporting block is abutted with the spring, and the soil humidity of the area where the optical fiber section is positioned reaches the preset soil humidity, if the sponge block further absorbs moisture, the supporting block starts to move up and down, and based on the control device, the conclusion that the soil humidity of the area where the optical fiber section is positioned in the supporting block reaches the preset soil humidity can be clearly obtained; as the ductility of the optical fiber is deteriorated, the spring is arranged under the supporting block, the supporting block is made to move up and down back and forth by utilizing the elasticity of the spring, so that the corresponding optical fiber section is deformed in an up and down back and forth movement, and the up and down back and forth movement range of the optical fiber is more easily detected as the weight of the sponge block on the supporting block is larger after the supporting block is abutted with the spring, so that the deformation of the optical fiber section when the up and down movement of the corresponding supporting block is balanced is taken as final deformation, the difference value between the deformation size of the optical fiber section in each second optical fiber deformation and the final deformation is calculated, the maximum difference value in each calculated difference value is determined, the up and down back and forth movement range of the optical fiber section is represented by the maximum difference value, and the larger the up and down back movement range of the optical fiber is, and the up and down back movement of the optical fiber is easier to be detected compared with the poor ductility of the optical fiber at the moment, so that the invention determines the actual soil humidity according to the maximum difference value and has higher accuracy; in addition, when the ductility of the optical fiber is poor, the spring is used for supporting the supporting block, so that the situation that the optical fiber is excessively stretched to reduce the ductility and further reduce the accuracy of deformation measurement of the optical fiber can be avoided;
3. According to the invention, the baffle plates are respectively arranged at the starting position and the ending position of each section, the two baffle plates move downwards along with the supporting blocks, and when the supporting blocks do up-and-down back-and-forth movement, the two baffle plates do synchronous up-and-forth movement, and as the baffle plates are arranged at the starting position and the ending position of each section, the final height of each section corresponding to the two baffle plates determines the water level of the section, when the sponge block absorbs more water, the sponge block correspondingly absorbs more water, the section with more water is easy to transfer the water into the adjacent section under the action of the up-and-down back-and-forth movement with larger amplitude, and the water collecting section with more water collecting capacity is less when the water flow in the water collecting tank reaches balance.
Drawings
FIG. 1 is a schematic diagram of a system for efficiently utilizing highland barley moisture according to an embodiment of the present invention;
FIG. 2 is a top perspective view of one embodiment of a moisture detection and utilization device of the highland barley moisture efficient utilization system of the present invention;
FIG. 3 is a side view of one embodiment of a moisture detecting and utilizing device in the highland barley moisture efficient utilizing system of the present invention.
Detailed Description
In order to better understand the technical solution in the embodiments of the present invention and make the above objects, features and advantages of the embodiments of the present invention more comprehensible, the technical solution in the embodiments of the present invention is described in further detail below with reference to the accompanying drawings.
In the description of the present invention, unless otherwise specified and defined, it should be noted that the term "connected" should be interpreted broadly, and for example, it may be a mechanical connection or an electrical connection, or may be a connection between two elements, or may be a direct connection or may be an indirect connection through an intermediary, and it will be understood to those skilled in the art that the specific meaning of the term may be interpreted according to the specific circumstances.
Referring to fig. 1, a schematic structural diagram of an embodiment of the highland barley water efficient utilization system of the present invention is shown. As shown in fig. 2 and 3, the highland barley water high-efficiency utilization system can include a control device, a watering device, an optical fiber deformation sensor and a water detection utilization device arranged between two adjacent rows of highland barley, wherein the watering device, the optical fiber deformation sensor and the water detection utilization device are respectively connected with the control device, the water detection utilization device comprises a water collecting tank 1 parallel to the highland barley in the corresponding row, the water collecting tank 1 is opened above and is closed at two ends, the water collecting tank is divided into a plurality of sections communicated with each other, each section is internally provided with a detection unit, each detection unit comprises a supporting block 3, a telescopic rod 4 and a sponge block 5, a first end (such as the bottom end of an outer rod) of the telescopic rod 4 is fixed at the tank bottom 11 of the water collecting tank 1, a second end (such as the top end of an inner rod) is connected with the lower surface of the supporting block 3 parallel to the tank bottom 11, the sponge block 5 is fixed on the upper surface of the supporting block 3, and sensing optical fibers 6 in the optical fiber deformation sensor sequentially penetrate through each supporting block 3 in the water collecting tank 1 and are fixedly connected with the optical fiber sections 6 inside each supporting block 3. In irrigation, the sponge block 5 in the detection unit absorbs water, the gravity of the sponge block 5 absorbing water increases, the telescopic rod 4 is contracted under the action of the gravity, the sponge block 5 and the supporting block 3 move downwards, so that the optical fiber section in the supporting block 3 is deformed, wherein the water absorption capacity in the sponge block 5 is used for reflecting soil humidity, the water absorption capacity of the sponge block 5 is different, the downward moving distance of the supporting block 3 is correspondingly different, and the deformation of the optical fiber section in the supporting block 3 is different; the optical fiber deformation sensor sends the detected optical fiber deformation to the control device; the control device locally stores the corresponding relation between the optical fiber deformation and the soil humidity, determines the soil humidity according to the optical fiber deformation detected by the optical fiber deformation sensor, controls the irrigation device according to the determined soil humidity, and controls the water detection and utilization device to move the tank bottom 11 of the water collecting tank upwards until the water is moved out from the two tank edges 12 of the water collecting tank after irrigation is completed, so that water in the water collecting tank is irrigated to soil on two sides. Wherein, this moisture detects utilizes device can include the electric telescopic handle that is connected with this controlling means, and this controlling means is used for controlling this electric telescopic handle and drives the tank bottom of this water catch bowl and reciprocate, and two groove edges of this water catch bowl can be equipped with the vertical groove that supplies the tank bottom to reciprocate, and the lug on the tank bottom is located this vertical inslot.
In this embodiment, because the electronic humidity sensor has the disadvantages of poor stability and short service life, the humidity sensor based on the optical fiber uses the humidity sensitive material for sensing, the commonly used humidity sensitive material belongs to an organic matter, repeated moisture absorption and moisture removal accelerate aging, so that the humidity sensor is easy to peel off from the optical fiber to fail. The sponge block has the same water absorption characteristic as that of local soil, the weight of the sponge block after water absorption and the weight of the sponge block after soil water absorption are synchronously changed in irrigation, and the change of the weight of the sponge block after water absorption can enable the supporting block and the optical fiber section in the supporting block to move downwards, so that the optical fiber section in the supporting block is deformed. According to the invention, each supporting block is fixedly connected with the optical fiber section in the supporting block, so that the optical fiber deformation sensor can conveniently distinguish the optical fiber sections in each supporting block.
In addition, the highland barley in the same row can be irrigated in different areas, the irrigation amount of each time is different, and the areas can have areas for repeated irrigation in the process of irrigating in different times. If the water detection and utilization device is arranged in the area, the water irrigated to the arranged area is not collected, and is directly immersed into the soil, different areas irrigated in the row of highland barley are separated, and the irrigation quantity difference is larger; according to the invention, the water collecting tank is arranged, water in different areas of the row of highland barley is collected into the tank in a separated mode, and all sections in the tank are communicated, so that water flow in all sections in the tank can reach balance, and after the water in the water collecting tank is irrigated to soil on two sides of the water collecting tank, the water difference in different areas can be reduced, the water is effectively and fully utilized, and the soil humidity difference of the row of highland barley is reduced. The control device controls the irrigation device to irrigate highland barley corresponding to the irrigation area, determines the deformation of the optical fiber section in the irrigation area in the first optical fiber deformation at this time according to the deformation of each first optical fiber received after the irrigation device is controlled to begin irrigation, and judges whether the soil humidity corresponding to the deformation of each optical fiber section in the irrigation area reaches the preset soil humidity or not according to the reference position of the sensing optical fiber, wherein the reference point is the reference position of the sensing optical fiber, and if so, the irrigation device is controlled to stop irrigation, otherwise, the irrigation device is controlled to continue irrigation. The deformation of the optical fiber in the invention can be the deformation of each point on the sensing optical fiber in the up-down direction, and the deformation sizes all represent the deformation sizes of the optical fiber section relative to the reference point.
After the irrigation device receives the control command for stopping irrigation, the water sprayed by the irrigation device still irrigates the irrigation area, so that the soil humidity corresponding to the received optical fiber deformation cannot reflect the actual soil humidity of each optical fiber section in the irrigation area before the control command is sent by the control device. Therefore, the control device respectively judges whether the deformation size of each optical fiber section in the irrigation area in the second optical fiber deformation is equal to the deformation size in the last second optical fiber deformation or not according to each second optical fiber deformation received after the irrigation device is controlled to stop irrigation, if so, the corresponding soil humidity is found out according to the deformation size of the corresponding optical fiber section in the second optical fiber deformation, the soil humidity is taken as the actual soil humidity of the area corresponding to the optical fiber section, otherwise, the judgment step is returned.
It should be noted that, since the deformation of the optical fiber detected by the optical fiber deformation sensor is usually a relative deformation, not an absolute deformation, if any position in the sensing optical fiber is taken as a reference point, when the position is deformed, the deformation in all positions in the sensing optical fiber cannot be accurately determined, so that a reference position which is never deformed needs to be set as a reference point, and a section of the sensing optical fiber extending from all the pouring areas and not affected by the pouring can be taken as the reference position.
Although it is mentioned in the above embodiment that there is a correspondence between the deformation of the optical fiber and the humidity of the soil, the humidity of the soil may be determined according to the detected deformation of the optical fiber, but the optical fiber deformation sensor uses the ductility of the optical fiber when detecting the deformation of the optical fiber, because the supporting block is fixedly connected with the optical fiber section in the optical fiber deformation sensor, when the supporting block drives the optical fiber section to move down, the optical fiber section and the connection sections between the optical fiber sections in the supporting blocks on both sides thereof will stretch, and as the optical fiber section moves down, the expansion capacity of the connection sections on both sides thereof will decrease, and the sponge block may need to absorb more moisture to deform the optical fiber section in a distinguishable manner. It can be seen that when the deformation of the optical fiber is detected by relying only on the ductility of the optical fiber, the amount of water required to be absorbed by the sponge block increases as the deformation of the optical fiber increases so as to cause a distinguishable unit deformation of the optical fiber. That is, as the deformation of the optical fiber section increases, the water absorption of the distinguishable sponge block increases. Based on this, if the soil humidity is determined directly using the deformation detected based on the ductility of the sensing optical fiber, the determination accuracy is low.
For this purpose, the detection unit according to the invention may further comprise a spring 7 coupled to the telescopic rod 4, the spring 7 being fixed to the bottom 11 of the sump 1, the telescopic rod 4 being inserted into the spring 7, the spring 7 being vertically stretchable, the initial height difference between the telescopic rod 4 and the spring 7 being indicative of the distance the sponge block 5 and the support block 3 should be moved downwards in order to reach a predetermined soil moisture. When the supporting block 3 moves down to contact with the spring 7, if the sponge block 5 further absorbs moisture, the weight of the sponge block 5 further increases, the supporting block 3 moves down to compress the spring 7 under the action of gravity of the sponge block 5, and the supporting block 3 moves up and down back and forth under the action of elasticity of the spring 7, and correspondingly, the optical fiber section 6 in the supporting block 3 also deforms in the up and down back and forth motion.
The control device controls the irrigation device to irrigate highland barley corresponding to the irrigation area, and determines the deformation of each optical fiber section in the irrigation area relative to the reference point in the sensing optical fiber in the first optical fiber deformation of the time according to the first optical fiber deformation received after the irrigation device is controlled to stop irrigation, wherein the reference point is the reference position in the sensing optical fiber, which is absolutely free from deformation, and judges whether the soil humidity corresponding to the deformation of each optical fiber section in the irrigation area reaches the preset soil humidity, if so, the irrigation device is controlled to stop irrigation, otherwise, the irrigation device is controlled to continue irrigation.
The control device aims at controlling second optical fiber deformation received after the pouring device stops pouring, the reference point is utilized to align the second optical fiber deformation received each time, for each optical fiber section of the sensing optical fiber in the pouring area, whether the deformation size of the optical fiber section relative to the reference point in the second optical fiber deformation is equal to the deformation size of the optical fiber section relative to the reference point in the last second optical fiber deformation or not is judged, if yes, the up-and-down movement of the optical fiber section corresponding to the supporting block is balanced, at the moment, the deformation size of the optical fiber section relative to the reference point in the second optical fiber deformation is taken as final deformation, the difference value of the deformation size of the optical fiber section in the second optical fiber deformation each time and the final deformation is calculated, the maximum difference value in the calculated difference values is determined, the soil humidity corresponding to the maximum difference value is found out locally, and the soil humidity is taken as the soil actual humidity of the area corresponding to the optical fiber section.
In this embodiment, the control device may locally store a correspondence between the maximum difference and the soil humidity. The invention judges whether the soil humidity of the area where each optical fiber section is positioned reaches the preset soil humidity based on the ductility of the sensing optical fiber and utilizes the deformation detected by the sensing optical fiber, and controls the irrigation device to stop irrigation when the soil humidity reaches the preset soil humidity; in addition, when supporting shoe and spring butt, after the soil humidity of the regional place of optic fibre section reaches the soil humidity of predetermineeing, if the sponge piece further absorbs moisture, the supporting shoe will begin the back and forth movement about, also can definitely draw the conclusion that the soil humidity of the regional place of optic fibre section in this supporting shoe reached the soil humidity of predetermineeing based on this controlling means.
As the ductility of the optical fiber is deteriorated, the spring is arranged under the supporting block, the supporting block is made to move up and down back and forth by utilizing the elasticity of the spring, so that the corresponding optical fiber section is deformed in an up and down back and forth movement, and the up and down back and forth movement range of the optical fiber is more easily detected as the weight of the sponge block on the supporting block is larger after the supporting block is abutted with the spring, so that the deformation of the optical fiber section when the up and down movement of the corresponding supporting block is balanced is taken as final deformation, the difference value between the deformation size of the optical fiber section in each second optical fiber deformation and the final deformation is calculated, the maximum difference value in each calculated difference value is determined, the up and down back and forth movement range of the optical fiber section is represented by the maximum difference value, and the larger the up and down back movement range of the optical fiber is, and the up and down back movement of the optical fiber is easier to be detected compared with the poor ductility of the optical fiber at the moment, so that the invention determines the actual soil humidity according to the maximum difference value and has higher accuracy; in addition, when the ductility of the optical fiber is poor, the supporting block is supported by the spring, so that the optical fiber is prevented from being excessively stretched, the ductility is reduced, and the accuracy of deformation measurement of the optical fiber is reduced.
Although the above embodiment can accurately and timely control the irrigation device and accurately measure the actual humidity of soil, the irrigation device is usually unevenly controlled when the soil humidity corresponding to the deformation of all the optical fiber sections reaches the preset soil humidity, and the irrigation device is stopped when the soil humidity of the region where each optical fiber section is located is reduced. In the initial state, the first baffle and the second baffle are both abutted with the bottom of the tank, and the first pull rope and the second pull rope are both in a straightening state; when the supporting block moves downwards, the first baffle is pulled up through the first pull rope, the second baffle is pulled up through the second pull rope, and the first baffle and the second baffle are separated from the bottom of the tank, so that all sections are communicated; after the supporting block moves downwards to be abutted with a spring under the supporting block, the supporting block continuously moves downwards, the supporting block moves back and forth up and down under the action of the elasticity of the spring and drives the first baffle plate and the second baffle plate to move back and forth up and down, wherein the more the sponge block absorbs water, the greater the amplitude of the back and forth up and down movement of the supporting block driving the first baffle plate and the second baffle plate under the action of the elasticity of the spring, the more the water collected in the section is easily transferred to the adjacent section, and the less the water in the section is when the water flow in the water collecting tank reaches balance.
According to the invention, the baffle plates are respectively arranged at the starting position and the ending position of each section, the two baffle plates move downwards along with the supporting blocks, and when the supporting blocks do up-and-down back-and-forth movement, the two baffle plates do synchronous up-and-forth movement, and as the baffle plates are arranged at the starting position and the ending position of each section, the final height of each section corresponding to the two baffle plates determines the water level of the section, when the sponge block absorbs more water, the sponge block correspondingly absorbs more water, the section with more water is easy to transfer the water into the adjacent section under the action of the up-and-down back-and-forth movement with larger amplitude, and the water collecting section with more water collecting capacity is less when the water flow in the water collecting tank reaches balance.
In addition, the invention also provides a control method of the highland barley water high-efficiency utilization system, which can comprise the following steps:
step S110, in irrigation, a sponge block in a detection unit absorbs water, the gravity of the sponge block absorbing the water is increased, a telescopic rod is contracted under the action of the gravity, and the sponge block and a supporting block move downwards, so that an optical fiber section in the supporting block is deformed, wherein the water absorption capacity in the sponge block is used for reflecting soil humidity, the water absorption capacity of the sponge block is different, the downward movement distance of the supporting block is correspondingly different, and the deformation of the optical fiber section in the supporting block is different;
Step S120, the optical fiber deformation sensor sends the detected optical fiber deformation to the control device;
and S130, the control device locally stores the corresponding relation between the optical fiber deformation and the soil humidity, determines the soil humidity according to the optical fiber deformation detected by the optical fiber deformation sensor, controls the irrigation device according to the determined soil humidity, and controls the water detection and utilization device to move the bottom of the water collecting tank upwards until the water is moved out from two tank edges of the water collecting tank after irrigation is completed, so that water in the water collecting tank is irrigated to soil on two sides.
In one embodiment, the step S130 may specifically include:
the control device controls the irrigation device to irrigate highland barley corresponding to the irrigation area, and determines the deformation of the optical fiber section in the irrigation area in the first optical fiber deformation according to the deformation of each first optical fiber received after the irrigation device starts to irrigate, wherein the reference point is a reference position in the sensing optical fiber, which is absolutely not deformed, and judges whether the soil humidity corresponding to the deformation of each optical fiber section in the irrigation area reaches the preset soil humidity, if so, the irrigation device is controlled to stop irrigation, otherwise, the irrigation device is controlled to continue irrigation;
The control device is used for respectively judging whether the deformation size of each optical fiber section in the irrigation area in the second optical fiber deformation is equal to the deformation size in the last second optical fiber deformation or not according to each second optical fiber deformation received after the irrigation device is controlled to stop irrigation, if so, the corresponding soil humidity is found out according to the deformation size of the optical fiber section in the second optical fiber deformation, and the soil humidity is used as the soil actual humidity of the area corresponding to the optical fiber section.
In another embodiment, after the supporting block moves down to contact with the spring, if the sponge block further absorbs moisture, the weight of the sponge block further increases, under the action of gravity of the sponge block, the supporting block moves down to compress the spring, and under the action of elasticity of the spring, the supporting block moves up and down to and fro, and correspondingly, the optical fiber section in the supporting block also deforms up and down to and fro;
the step S130 may specifically include:
the control device controls the irrigation device to irrigate highland barley corresponding to the irrigation area, determines the deformation of each optical fiber section in the irrigation area relative to a reference point in the sensing optical fiber in the first optical fiber deformation for the first time, wherein the reference point is a reference position in the sensing optical fiber, which is absolutely free from deformation, judges whether the soil humidity corresponding to the deformation of each optical fiber section in the irrigation area reaches the preset soil humidity, if so, controls the irrigation device to stop irrigation, otherwise, controls the irrigation device to continue irrigation;
The control device aims at controlling second optical fiber deformation received after the pouring device stops pouring, the reference point is utilized to align the second optical fiber deformation received each time, for each optical fiber section of the sensing optical fiber in the pouring area, whether the deformation size of the optical fiber section relative to the reference point in the second optical fiber deformation is equal to the deformation size of the optical fiber section relative to the reference point in the last second optical fiber deformation or not is judged, if yes, the up-and-down movement of the optical fiber section corresponding to the supporting block is balanced, at the moment, the deformation size of the optical fiber section relative to the reference point in the second optical fiber deformation is taken as final deformation, the difference value of the deformation size of the optical fiber section in the second optical fiber deformation each time and the final deformation is calculated, the maximum difference value in the calculated difference values is determined, the soil humidity corresponding to the maximum difference value is found out locally, and the soil humidity is taken as the soil actual humidity of the area corresponding to the optical fiber section.
As can be seen from the above embodiments, the present invention does not use an electronic humidity sensor or an optical fiber humidity sensor, but uses moisture absorbed by a sponge block to reflect soil humidity, and changes in weight of the sponge block after absorbing moisture can cause a supporting block and an optical fiber section in the supporting block to move down, thereby bringing about deformation of the optical fiber section, so that soil humidity can be reflected according to deformation of the optical fiber section, and optical fibers adopted by the optical fiber deformation sensor belong to common optical fibers, so that the stability is better and the service life is longer; according to the invention, each supporting block is fixedly connected with the optical fiber section in the supporting block, so that the optical fiber deformation sensor can conveniently distinguish the optical fiber sections in each supporting block; according to the invention, the water collecting tank is arranged, water in different areas of the row of highland barley is collected into the tank in a separated mode, and all sections in the tank are communicated, so that water flow in all sections in the tank is balanced, and after the water in the water collecting tank is irrigated to soil on two sides of the water collecting tank, the water difference in different areas can be reduced, the water is effectively and fully utilized, and the soil humidity difference of the row of highland barley is reduced.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
It is to be understood that the invention is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the invention is to be governed only by the following claims.
Claims (7)
1. The highland barley water high-efficiency utilization system is characterized by comprising a control device, a watering device, an optical fiber deformation sensor and a water detection utilization device, wherein the watering device and the optical fiber deformation sensor are respectively connected with the control device, the water detection utilization device is arranged between two adjacent rows of highland barley, the water detection utilization device comprises a water collecting tank parallel to the highland barley in the corresponding row, the upper part of the water collecting tank is provided with an opening, the two ends of the water collecting tank are closed, the water collecting tank is divided into a plurality of sections which are mutually communicated, each section is internally provided with a detection unit, each detection unit comprises a supporting block, a telescopic rod and a sponge block, the first end of the telescopic rod is fixed at the bottom of the water collecting tank, the second end of the telescopic rod is connected with the lower surface of the supporting block parallel to the bottom of the water collecting tank, the sponge block is fixed on the upper surface of the supporting block, and sensing optical fibers in the optical fiber deformation sensor sequentially penetrate through each supporting block in the water collecting tank, and each supporting block is fixedly connected with an optical fiber section in the water collecting tank;
In irrigation, the sponge block in the detection unit absorbs water, the gravity of the sponge block absorbing water is increased, the telescopic rod is contracted under the action of the gravity, and the sponge block and the supporting block move downwards, so that the optical fiber section in the supporting block is deformed, wherein the water absorption capacity in the sponge block is used for reflecting soil humidity, the water absorption capacity of the sponge block is different, the downward movement distance of the supporting block is correspondingly different, and the deformation of the optical fiber section in the supporting block is different; the optical fiber deformation sensor sends the detected optical fiber deformation to the control device;
the control device locally stores the corresponding relation between the optical fiber deformation and the soil humidity, determines the soil humidity according to the optical fiber deformation detected by the optical fiber deformation sensor, controls the irrigation device according to the determined soil humidity, and controls the water detection and utilization device to move the bottom of the water collecting tank upwards until the water is moved out from two tank edges of the water collecting tank after irrigation is completed, so that water in the water collecting tank is irrigated to soil on two sides.
2. The highland barley water high-efficiency utilization system according to claim 1, wherein the control device controls the irrigation device to irrigate highland barley corresponding to an irrigation area, determines the deformation of the optical fiber section in the irrigation area in the first optical fiber deformation at this time according to each first optical fiber deformation received after the irrigation device is controlled to start irrigation, judges whether the soil humidity corresponding to the deformation of each optical fiber section in the irrigation area reaches the preset soil humidity or not according to the reference position of the sensing optical fiber, which is the absolute deformation-free reference position, and controls the irrigation device to stop irrigation if yes, otherwise, controls the irrigation device to continue irrigation;
The control device is used for respectively judging whether the deformation size of each optical fiber section in the irrigation area in the second optical fiber deformation is equal to the deformation size in the last second optical fiber deformation or not according to each second optical fiber deformation received after the irrigation device is controlled to stop irrigation, if so, the corresponding soil humidity is found out according to the deformation size of the optical fiber section in the second optical fiber deformation, and the soil humidity is used as the soil actual humidity of the area corresponding to the optical fiber section.
3. The highland barley water efficient utilization system according to claim 1, wherein the detection unit further comprises a spring matched with the telescopic rod, the spring is fixed on the bottom of the water collecting tank, the telescopic rod is arranged in the spring in a penetrating manner, the spring can be stretched up and down, and the initial height difference of the telescopic rod and the spring is used for indicating the distance that the sponge block and the supporting block should move downwards in order to reach the preset soil humidity;
when the supporting block moves downwards to be in contact with the spring, if the sponge block further absorbs moisture, the weight of the sponge block further increases, the supporting block moves downwards to compress the spring under the action of the gravity of the sponge block, the supporting block moves up and down back and forth under the action of the elasticity of the spring, and correspondingly, the optical fiber section in the supporting block also deforms in the up and down back and forth motion;
The control device controls the irrigation device to irrigate highland barley corresponding to the irrigation area, determines the deformation of each optical fiber section in the irrigation area relative to a reference point in the sensing optical fiber in the first optical fiber deformation for the first time, wherein the reference point is a reference position in the sensing optical fiber, which is absolutely free from deformation, judges whether the soil humidity corresponding to the deformation of each optical fiber section in the irrigation area reaches the preset soil humidity, if so, controls the irrigation device to stop irrigation, otherwise, controls the irrigation device to continue irrigation;
the control device aims at controlling second optical fiber deformation received after the pouring device stops pouring, the reference point is utilized to align the second optical fiber deformation received each time, for each optical fiber section of the sensing optical fiber in the pouring area, whether the deformation size of the optical fiber section relative to the reference point in the second optical fiber deformation is equal to the deformation size of the optical fiber section relative to the reference point in the last second optical fiber deformation or not is judged, if yes, the up-and-down movement of the optical fiber section corresponding to the supporting block is balanced, at the moment, the deformation size of the optical fiber section relative to the reference point in the second optical fiber deformation is taken as final deformation, the difference value of the deformation size of the optical fiber section in the second optical fiber deformation each time and the final deformation is calculated, the maximum difference value in the calculated difference values is determined, the soil humidity corresponding to the maximum difference value is found out locally, and the soil humidity is taken as the soil actual humidity of the area corresponding to the optical fiber section.
4. The highland barley water efficient utilization system according to claim 3, wherein the detection unit further comprises a first pulley, a first baffle, a second pulley and a second baffle, wherein for each section of the water collecting tank, a first gate frame and a second gate frame extend upwards from the tank bottom at the starting and ending positions of the section respectively, the first pulley is fixed on one side of the first gate frame facing the tank bottom, the second pulley is fixed on one side of the second gate frame facing the tank bottom, the first baffle and the second baffle are vertically arranged, the first baffle and the second baffle are respectively used for separating front and rear sections adjacent to the section, a first stay rope connected with the first baffle is fixedly connected with a supporting block in the detection unit by bypassing the first pulley, a second stay rope connected with the second baffle is fixedly connected with the supporting block by bypassing the second pulley, the first baffle is in contact with two sides of the first gate frame, the two sides of the first gate frame are in contact with two sides of the water collecting tank, the second baffle is in contact with two sides of the second gate frame, and the two sides of the second baffle are in contact with the two sides of the water collecting tank;
in the initial state, the first baffle and the second baffle are both abutted with the bottom of the tank, and the first pull rope and the second pull rope are both in a straightening state; when the supporting block moves downwards, the first baffle is pulled up through the first pull rope, the second baffle is pulled up through the second pull rope, and the first baffle and the second baffle are separated from the bottom of the tank, so that all sections are communicated; after the supporting block moves downwards to be abutted with a spring under the supporting block, the supporting block continues to move downwards, the supporting block moves back and forth up and down under the action of the elasticity of the spring and drives the first baffle plate and the second baffle plate to move back and forth up and down, wherein the more the sponge block absorbs the water, the larger the amplitude of the back and forth up and down movement of the supporting block driving the first baffle plate and the second baffle plate under the action of the elasticity of the spring, and the more the water collected in the section is easily transferred into the adjacent section.
5. A control method of the highland barley water efficient use system as set forth in any one of claims 1 to 4, characterized by comprising:
step S110, in irrigation, a sponge block in a detection unit absorbs water, the gravity of the sponge block absorbing the water is increased, a telescopic rod is contracted under the action of the gravity, and the sponge block and a supporting block move downwards, so that an optical fiber section in the supporting block is deformed, wherein the water absorption capacity in the sponge block is used for reflecting soil humidity, the water absorption capacity of the sponge block is different, the downward movement distance of the supporting block is correspondingly different, and the deformation of the optical fiber section in the supporting block is different;
step S120, the optical fiber deformation sensor sends the detected optical fiber deformation to the control device;
and S130, the control device locally stores the corresponding relation between the optical fiber deformation and the soil humidity, determines the soil humidity according to the optical fiber deformation detected by the optical fiber deformation sensor, controls the irrigation device according to the determined soil humidity, and controls the water detection and utilization device to move the bottom of the water collecting tank upwards until the water is moved out from two tank edges of the water collecting tank after irrigation is completed, so that water in the water collecting tank is irrigated to soil on two sides.
6. The method for controlling a highland barley water efficient use system according to claim 5, wherein the step S130 specifically includes:
the control device controls the irrigation device to irrigate highland barley corresponding to the irrigation area, and determines the deformation of the optical fiber section in the irrigation area in the first optical fiber deformation according to the deformation of each first optical fiber received after the irrigation device starts to irrigate, wherein the reference point is a reference position in the sensing optical fiber, which is absolutely not deformed, and judges whether the soil humidity corresponding to the deformation of each optical fiber section in the irrigation area reaches the preset soil humidity, if so, the irrigation device is controlled to stop irrigation, otherwise, the irrigation device is controlled to continue irrigation;
the control device is used for respectively judging whether the deformation size of each optical fiber section in the irrigation area in the second optical fiber deformation is equal to the deformation size in the last second optical fiber deformation or not according to each second optical fiber deformation received after the irrigation device is controlled to stop irrigation, if so, the corresponding soil humidity is found out according to the deformation size of the optical fiber section in the second optical fiber deformation, and the soil humidity is used as the soil actual humidity of the area corresponding to the optical fiber section.
7. The control method of highland barley water high efficiency utilization system according to claim 5, wherein when the supporting block moves down to contact with the spring, if the sponge block further absorbs water, the weight of the sponge block further increases, the supporting block moves down to compress the spring under the action of gravity of the sponge block, the supporting block moves up and down back and forth under the action of elasticity of the spring, and correspondingly, the optical fiber section in the supporting block also deforms up and down back and forth;
the step S130 specifically includes:
the control device controls the irrigation device to irrigate highland barley corresponding to the irrigation area, determines the deformation of each optical fiber section in the irrigation area relative to a reference point in the sensing optical fiber in the first optical fiber deformation for the first time, wherein the reference point is a reference position in the sensing optical fiber, which is absolutely free from deformation, judges whether the soil humidity corresponding to the deformation of each optical fiber section in the irrigation area reaches the preset soil humidity, if so, controls the irrigation device to stop irrigation, otherwise, controls the irrigation device to continue irrigation;
The control device aims at controlling second optical fiber deformation received after the pouring device stops pouring, the reference point is utilized to align the second optical fiber deformation received each time, for each optical fiber section of the sensing optical fiber in the pouring area, whether the deformation size of the optical fiber section relative to the reference point in the second optical fiber deformation is equal to the deformation size of the optical fiber section relative to the reference point in the last second optical fiber deformation or not is judged, if yes, the up-and-down movement of the optical fiber section corresponding to the supporting block is balanced, at the moment, the deformation size of the optical fiber section relative to the reference point in the second optical fiber deformation is taken as final deformation, the difference value of the deformation size of the optical fiber section in the second optical fiber deformation each time and the final deformation is calculated, the maximum difference value in the calculated difference values is determined, the soil humidity corresponding to the maximum difference value is found out locally, and the soil humidity is taken as the soil actual humidity of the area corresponding to the optical fiber section.
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