CN107192457B - Crop canopy temperature acquisition system - Google Patents
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- CN107192457B CN107192457B CN201710324021.2A CN201710324021A CN107192457B CN 107192457 B CN107192457 B CN 107192457B CN 201710324021 A CN201710324021 A CN 201710324021A CN 107192457 B CN107192457 B CN 107192457B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
- G01J5/0205—Mechanical elements; Supports for optical elements
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J2005/0077—Imaging
Abstract
The invention discloses a crop canopy temperature acquisition system, and relates to the technical field of agricultural information measurement. The system comprises: the system comprises a circular sprinkler, a plurality of temperature sensors and a client terminal; the temperature sensor is positioned below the truss of the circular sprinkler and is connected with the circular sprinkler through a fixing rod arranged along the vertical direction; the plurality of temperature sensors are arranged along the length direction of the truss of the circular sprinkler; when the circular sprinkler runs, the temperature sensor can do circular motion by taking a central tower of the circular sprinkler as a circle center; the client terminal is electrically connected with the temperature sensor; the temperature sensor is used for acquiring the temperature information of the crop canopy and outputting the temperature information; the client terminal is used for receiving the temperature information. The crop canopy temperature acquisition system provided by the invention takes the circular sprinkler as the temperature sensor carrier, so that the labor cost and the equipment cost of a crop canopy temperature measurement mode are effectively reduced, and the popularization prospect is good.
Description
Technical Field
The invention relates to the technical field of agricultural information measurement, in particular to a crop canopy temperature acquisition system.
Background
Irrigation provides necessary moisture for crop production, and is an indispensable link in agricultural production. The spray irrigation is one of the main irrigation modes in modern agricultural production, and particularly relates to an irrigation mode that pressurized water is delivered to an irrigation area by using spray irrigation equipment such as a circular sprinkler and the like and is sprayed to the air to form fine water drops to be sprayed to the field. In the sprinkling irrigation process, the influence of factors such as soil water holding capacity, terrain gradient, plant diseases and insect pests can cause the conditions of water consumption and uneven yield of crops, and the sprinkling irrigation water production efficiency is influenced. Therefore, in order to ensure good sprinkling irrigation moisture production efficiency, a scientific and reasonable sprinkling irrigation system needs to be formulated according to the water consumption condition of crops. Canopy temperature is an important indicator of crop water consumption status. Therefore, in order to make a reasonable irrigation system, the detection of the canopy temperature of crops is indispensable.
In the prior art, a mode of manually measuring the canopy temperature of a crop is adopted, and in order to ensure that the measured canopy temperature can faithfully reflect the water consumption condition of the crop, the canopy temperature measuring time is usually 12 pm to 2 pm. Within two hours of measurement, workers hold the temperature measuring instrument to measure the canopy temperature one by one in the area to be measured.
In the process of implementing the invention, the inventor finds that the prior art has at least the following problems:
the manual measurement of the temperature of the crop canopy has the disadvantage of high labor intensity of the workers, and particularly when the area to be measured is large, the workload of the workers is significantly increased.
Disclosure of Invention
In order to solve the problem that the labor intensity of workers is high in the prior art by utilizing a mode of manually measuring the temperature of a crop canopy, the embodiment of the invention provides a system for obtaining the temperature of the crop canopy, and the specific technical scheme is as follows:
a crop canopy temperature acquisition system, comprising: the system comprises a circular sprinkler, a plurality of temperature sensors and a client terminal;
the temperature sensor is positioned below a truss of the circular sprinkler and is connected with the circular sprinkler through a fixing rod arranged in the vertical direction; the plurality of temperature sensors are arranged along the length direction of the truss of the circular sprinkler; when the circular sprinkler runs, the temperature sensor can do circular motion by taking a central tower of the circular sprinkler as a circle center;
the client terminal is electrically connected with the temperature sensor;
the temperature sensor is used for acquiring the temperature information of the crop canopy and outputting the temperature information; the client terminal is used for receiving the temperature information.
Preferably, the temperature sensor is an infrared temperature sensor.
Preferably, the fixing rod is fixedly connected with a tie bar of the circular sprinkler, and the fixing rod can stretch out and draw back in the vertical direction and is used for adjusting the distance from the temperature sensor to the crop canopy.
Preferably, the system further comprises: the two ends of the connecting rod are respectively and fixedly connected with the two tie bars of the annular sprinkling machine;
the fixed rod comprises an outer rod and an inner rod; the outer rod is connected with the connecting rod, and one part of the inner rod in the length direction is positioned in the outer rod and can move along the axial direction of the outer rod; and positioning elements are arranged on the side wall of the outer rod and limit the movement of the inner rod along the axial direction of the outer rod.
The temperature sensor is arranged at the lower end of the inner rod.
Preferably, the lower end of the inner rod is connected with a protective cover, and the temperature sensor is arranged inside the protective cover.
Preferably, the material of the protective cover is a thermal insulation material.
Preferably, the system further comprises at least one collector and a server;
the collector is electrically connected with the temperature sensor, the server is connected with the collector through a network, and the client terminal is connected with the server through a network;
the collector is used for supplying power to the temperature sensor, acquiring temperature information sent by the temperature sensor and sending the temperature information to the server;
the server is used for receiving and storing the temperature information and sending the temperature information to the client terminal.
Preferably, the system further comprises a receiver arranged on the tail span body of the circular sprinkler, and the receiver is connected with the server through a network;
the receiver is used for receiving the position information of the tail end span body of the circular sprinkler sent by a satellite navigation system and sending the position information to the server.
Preferably, the arrangement density of the temperature sensors along the length direction of the truss of the circular sprinkler is obtained by the following method comprising:
step 2, dividing the first area by using a preset number of square grids, wherein the preset number is greater than or equal to 100, and the preset number refers to the sum of the number of grids completely located in the first area and the number of grids located in the first area, the area of which is greater than or equal to 1/2 of the area of the grids;
and 4, when the number of the grids crossed with the rings is equal to the preset number, the number of the rings is the number of the temperature sensors needed by the circular sprinkler.
Preferably, the preset number is 100.
The technical scheme provided by the embodiment of the invention has the following beneficial effects:
according to the crop canopy temperature acquisition system provided by the embodiment of the invention, the crop canopy temperature of the area where the truss rotates is measured through the plurality of temperature sensors connected with the circular sprinkler, meanwhile, the temperature sensors transmit the measured temperature information to the client terminal, and workers check the crop canopy temperature through the client terminal. The embodiment of the invention takes the circular sprinkler as the carrier of the temperature sensor, fully utilizes the characteristics of large sprinkling coverage area and high automation degree of the circular sprinkler, realizes the measurement of the canopy temperature of a large-area crop planting area, effectively overcomes the defect of high labor intensity in the manual measurement of the canopy temperature of crops in the prior art, and has excellent popularization prospect.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic diagram of a prior art circular sprinkler;
FIG. 2 shows a fixing method of a temperature sensor in a crop canopy temperature acquisition system according to an embodiment of the present invention
A schematic diagram;
FIG. 3 is a network topology structure diagram of a crop canopy temperature acquisition system according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a method for optimizing the arrangement density of the temperature sensors according to an embodiment of the present invention.
In the drawings, the respective reference numerals are:
11. a central tower, 12 driving towers, 121 driving wheels and 13 spanning bodies; 14. a main water pipe, 15, a droop pipe and 16, a lacing wire;
21. a connecting rod, 22, a fixing rod, 221, an outer rod, 222, an inner rod, 23, a positioning element,
24. transmission line, 25 protective cover;
3. a temperature sensor;
i a first area; II, gridding; III is ring-shaped.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
The embodiment of the invention provides a system for acquiring the temperature of a crop canopy, which comprises: a circular sprinkler, a plurality of temperature sensors 3 and a client terminal; the temperature sensor 3 is positioned below a truss of the circular sprinkler and is connected with the circular sprinkler through a fixing rod 22 arranged along the vertical direction; and a plurality of temperature sensors 3 are arranged along the length direction of the truss of the circular sprinkler; when the circular sprinkler runs, the temperature sensor 3 can do circular motion by taking a central tower of the circular sprinkler as a circle center;
the client terminal is electrically connected with the temperature sensor;
the temperature sensor is used for acquiring the temperature information of the crop canopy and outputting the temperature information;
the client terminal is used for receiving the temperature information.
Wherein, circular sprinkling irrigation machine is a sprinkling irrigation equipment who often uses among the prior art, has degree of automation height, the big characteristics of sprinkling irrigation area of coverage. Regarding a common constituent structure of the circular sprinkler, referring to fig. 1, the circular sprinkler includes:
the central tower 11, a truss connected to the central tower 11, and a plurality of driving towers 12 disposed below the truss. The truss comprises a plurality of span bodies 13 (only two span bodies 13 are taken as examples in fig. 1), each span body 13 is composed of a steel pipe, angle iron and at least two tie bars 16, and the two tie bars 16 are arranged in parallel to the extending direction of the truss. A driving tower 12 is arranged at the connection of the adjacent span bodies 13, and the driving tower 12 comprises a driving wheel 121 and a motor for driving the truss to rotate by taking the central tower 11 as an axis. Simultaneously, still be provided with sprinkler owner raceway 14 along truss length direction, main raceway 14 is connected with the flagging pipe 15 of a plurality of vertical settings, has the shower nozzle at 15 end connection of the pipe that hangs down, and irrigation water is carried to flagging pipe 15 rethread shower nozzle blowout by main raceway 14. When the circular sprinkler is used, the driving tower 12 drives the main water pipe 14 and the drop pipe 15 to rotate together with the truss by taking the central tower 11 as an axis, and a fan-shaped or circular area swept by the truss in the rotating process is an area where the circular sprinkler can spray.
According to the crop canopy temperature acquisition system provided by the embodiment of the invention, the temperature sensor 3 is arranged below the truss of the circular sprinkler through the fixing rod 22 arranged along the vertical direction, so that the temperature sensor 3 can be positioned above a crop canopy, the temperature sensor 3 can make circular motion by taking the center tower 11 of the circular sprinkler as a circle center, and the temperature sensor 3 can rotate through the whole sprinkling irrigation area along with the operation of the circular sprinkler, so that the measurement of the temperature of the crop canopy in the whole detection area is completed. Meanwhile, the temperature sensor 3 generates temperature information of the acquired canopy temperature, the temperature information is sent to a client terminal, and a worker checks the canopy temperature through the client terminal.
According to the embodiment of the invention, the circular sprinkler is used as the carrier of the temperature sensor 3, the characteristics of large sprinkling coverage area and high automation degree of the circular sprinkler are fully utilized, the measurement of the canopy temperature of a large-area crop planting area is realized, the defect of high labor intensity in the manual measurement of the canopy temperature of the crop in the prior art is effectively overcome, and the canopy temperature of the crop can be quickly and efficiently obtained.
Meanwhile, the crop canopy temperature acquisition system provided by the embodiment of the invention has the characteristics of convenience and convenience in use and small influence of weather. Especially compare with the survey mode that emerging unmanned aerial vehicle carried the thermal imaging appearance. Specifically, in the measurement mode, the unmanned aerial vehicle keeps stable flight so as to maintain the thermal imaging camera above the crop canopy for measurement. It is easy to see that the stable flight of unmanned aerial vehicle is guaranteed, the weather condition that needs to be suitable, consequently when strong wind weather appears, can't adopt unmanned aerial vehicle to carry the survey mode of thermal imaging system. In the acquisition system provided by the embodiment of the invention, the temperature sensor 3 is connected with the circular sprinkler through the fixing rod 22, so that the temperature sensor 3 can be stably positioned above the crop canopy, the influence of weather factors on the temperature acquisition system is reduced, and the acquisition system is convenient to use.
Wherein, the temperature sensor 3 is an infrared temperature sensor. The infrared temperature sensor is a non-contact temperature measuring sensor and has high sensitivity and measurement precision. When the distance between the object to be measured and the infrared temperature sensor is within the effective measuring range, the temperature measured by the infrared temperature sensor can reflect the temperature of the surface of the object to be measured.
In the embodiment of the invention, referring to fig. 3, the fixing rod 22 is fixedly connected with the tie bar 16 of the circular sprinkler, and the length of the fixing rod 22 in the vertical direction is adjustable so as to change the distance from the temperature sensor 3 to the crop canopy. By adjusting the length of the fixing rod 22 in the vertical direction, the distance between the temperature sensor 3 and the crop canopy can be within the effective measurement range of the temperature sensor 3, and the scientific accuracy of the temperature of the crop canopy measured by the temperature sensor 3 is guaranteed.
Specifically, referring to fig. 3, in an alternative implementation manner of the embodiment of the present invention, the canopy temperature acquiring system further includes a connecting rod 21, and two ends of the connecting rod 21 are respectively and fixedly connected to the two tie bars 16 of the annular sprinkler.
The fixing rod 22 includes an outer rod 221 and an inner rod 222; the outer rod 221 is connected with the connecting rod 21, and a part of the inner rod 222 in the length direction is positioned inside the outer rod 221 and can move along the axial direction of the outer rod 221; a positioning member 221 is provided on a side wall of the outer rod 221, and the positioning member 221 defines the movement of the inner rod 222 in the axial direction of the outer rod 22. The temperature sensor 3 is provided at the lower end of the inner rod 222.
The outer pole 221 is held fixed with the tie bar 16 of the circular sprinkler by the connecting rod 21, the length adjustment of the integral fixing rod 22 in the vertical direction is realized by pulling out the inner pole 222 provided inside the outer pole 221, and the relative positions of the inner pole 222 and the outer pole 221 are fixed by the positioning member 23. Meanwhile, the temperature sensor 3 is arranged at the lower end of the inner rod 222, when the inner rod 222 is pulled out downwards along the axial direction of the outer rod 221, the inner rod 222 drives the temperature sensor 3 to move downwards to be close to a crop canopy, so that the height of the temperature sensor 3 is adjusted, and the effective measurement of the temperature of the crop canopy is ensured.
The connection manner of the temperature sensor 3 and the inner rod 222 is not particularly limited, for example, the temperature sensor 3 is fixed to the lower end of the inner rod 222; or the inner rod 222 is of a hollow structure, the transmission line 24 is fixedly connected to the inner wall of the inner rod 222, one end of the transmission line 24 is connected with the temperature sensor 3, and the temperature sensor 3 is located at the lower end of the inner rod 222. The other end of the transmission line 24 can be connected with a power supply assembly to provide power for the temperature sensor 3, so that the normal use of the temperature sensor is ensured. And optionally, the outer rod 222 is integrally formed with the connecting rod 21.
Further, the specific implementation form of the positioning element 23 is also not limited. For example, the positioning element 23 comprises a positioning screw provided on the side wall of the outer rod 221, and positioning grooves provided at different heights on the side wall of the inner rod 222, the positioning grooves cooperating with the positioning screw. The length of the inner rod 222 outside the outer rod 221 is changed by connecting different positioning grooves with positioning screws, so that the length of the fixing rod 22 is adjusted.
Meanwhile, the temperature sensor 3 may be influenced by external factors such as rainfall, water spray and the like during use, and the measured temperature is deviated, so that the protective cover 25 is connected to the lower end of the inner rod 222, the temperature sensor 3 is arranged inside the protective cover 25, and the protective cover 25 is preferably made of a thermal insulation material, so that the interference of the external factors on the temperature measurement of the temperature sensor 3 is avoided.
In addition, the canopy temperature acquisition system provided by the embodiment of the invention also comprises at least one collector and a server; the collector is electrically connected with the temperature sensor 3, the server is connected with the collector through a network, and the client terminal is connected with the server through a network; the collector is used for supplying power to the temperature sensor 3, acquiring temperature information sent by the temperature sensor 3 and sending the temperature information to the server; the server is used for receiving and storing the temperature information and sending the temperature information to the client terminal. Data transmission between the temperature sensor 3 and the client terminal is established through the collector and the server, temperature information is collected and stored, and convenience is brought to workers to fetch.
Wherein, the collector can be fixed on the circular sprinkler truss, the temperature sensor 3 is electrically connected with the collector through the transmission line 24, and the transmission line 24 is arranged inside the inner rod 222 and the connecting rod 21. The harvester can provide power to the temperature sensor 3 via the transmission line 24, and the temperature sensor 3 sends the determined canopy temperature to the harvester. The number of the collectors is not specifically limited, and can be 1, 2, 3 and the like; and one collector may be connected to one or more temperature sensors 3. The client terminals are connected with the server through the Internet, the number of the client terminals is not specifically limited, 1 client terminal can be arranged, and 2 or more than 2 client terminals can be arranged, so that a plurality of workers can conveniently inquire the temperature information.
Further, in addition to being able to obtain canopy temperature, it is also necessary to know the geographical location information of a particular measurement area when setting up an irrigation regime. Therefore, the canopy temperature acquiring system provided by the embodiment of the present invention further includes a receiver disposed at the tail end bay of the circular sprinkler (i.e., the bay 13 farthest from the center tower 11 of the circular sprinkler, such as the right-most bay 13 in fig. 1), and the receiver is configured to receive the position information of the tail end bay of the circular sprinkler acquired by the satellite navigation system and send the position information to the server.
A satellite navigation system (GNSS) receiver is a receiver for receiving a target object and determining a geographic position, where the received position information includes a longitude and a latitude of the target object. In the embodiment of the invention, the receiver is used for receiving specific position information of the tail span body of the circular sprinkler, and particularly when the temperature sensor 3 performs temperature measurement, the receiver can synchronously receive the position information of the tail span body at the moment, including the longitude and the latitude of the tail span body. Meanwhile, the server receives and stores the position information sent by the receiver, so that a worker can know the specific measuring progress of the canopy temperature obtaining system and the specific measuring area corresponding to the obtained temperature information.
In the embodiment of the invention, for the effective transmission of the temperature information and the position information, the acquisition gateway 5 is arranged between the acquisition device and the server, and the acquisition gateway 5 is used for converting the information formats of the temperature information and the position information and is convenient to send to the server. The collection gateway 5 may be located in the main control cabinet of the circular sprinkler. The collector and the collection gateway 5 can be connected through wireless connection or field bus, the collection gateway 5 and the server can be connected through Ethernet or Internet, and the receiver can be connected with the collection gateway 5 through field bus.
Therefore, by the canopy temperature acquisition system provided by the embodiment of the invention, workers can inquire information such as the truss position of the circular sprinkler, the canopy temperature of crops, temperature acquisition time and the like.
In summary, the crop canopy temperature acquisition system provided by the embodiment of the present invention forms a network topology as shown in fig. 3. The temperature sensor 3 is used for measuring the temperature of crops entering the canopy, and the generated temperature information is sent to the collector. The receiver receives the position information of the truss end span body positioned by the satellite navigation system, in particular the position information of the end span body when the temperature sensor 3 measures the temperature of the canopy. The collector sends the collected temperature information and the receiver sends the received position information to the collection gateway 5, and the collection gateway 5 converts the formats of the temperature information and the position information and sends the temperature information and the position information to the server. The server receives and stores temperature information and location information. Meanwhile, the staff checks the temperature information and the position information stored in the server through client terminals such as a notebook computer, a mobile phone and the like, and analyzes the temperature information and the position information to formulate a reasonable irrigation system.
Finally, in order to further reduce the equipment investment of the canopy temperature acquiring system provided by the embodiment of the present invention, the embodiment of the present invention optimizes the arrangement density of the temperature sensors 3 on the truss of the circular sprinkler, and specifically referring to fig. 4, the optimization method is as follows:
step 2, dividing the first area I by using a preset number of square grids II, wherein the preset number is greater than or equal to 100, and the preset number refers to the sum of the number of grids II completely positioned in the first area I and the number of grids II with the area greater than or equal to 1/2 of the area of the grids II positioned in the first area I;
and 4, when the number of the grids II crossed with the rings is equal to the preset number, the number of the rings III is the number of the temperature sensors 3 required by the circular sprinkler.
In a certain measuring range, the canopy temperature of the crops is not greatly different, so for the convenience of observation, the canopy temperature of the crops in a certain range is not changed by default. In the method, the first area I is subjected to gridding division in the steps 1 and 2, namely, crops in each grid II are defaulted to have the same canopy temperature, so that the canopy temperatures of the crops in the first area I are discrete. According to the experimental experience of the technicians in the field, when the preset number of the grids II is more than or equal to 100, the measured temperatures of the crop canopies in different grids II have certain difference, and meanwhile, the overall variation trend of the temperatures of the crop canopies at different positions in the first area I can be reflected, and the measurement precision requirement is met. And when the preset number of the grids II is 100, the requirement of the lowest measurement precision is met. It will be appreciated that the accuracy of the temperature determination in the first region i can be adjusted by adjusting the predetermined number of grids ii. Furthermore, the temperature sensor 3 has a fixed effective measuring range in the shape of a truncated cone with the temperature sensor 3 as the top surface, and the projections of the effective measuring range in the horizontal planes at different heights are circles of different diameters. Within this effective measurement range, the temperature measured by the temperature sensor 3 can faithfully reflect the actual temperature within this range. In step 3, therefore, the diameter of a circle formed by projecting the effective measurement range of one temperature sensor 3 on the plane of the crop canopy is used as the radius difference to draw the ring iii, which is understood to be the region where the temperature sensor 3 can accurately measure, and the number of rings iii represents the number of temperature sensors 3. Further, in step 4, when ring iii crosses grid ii, it indicates that temperature sensor 3 can accurately measure the temperature of the crop canopy within grid ii. Here, the portion where the ring iii overlaps the mesh ii is regarded as the intersection of the ring iii and the mesh ii. In the actual production process, the size of the grid II is usually far larger than the radius difference of the ring III, so that the ring III can be regarded as a circle, and when the edge of the circle passes through one grid II, the circle III is intersected with the grid II. It will be appreciated that the temperature sensor 3 is adapted to be able to obtain exactly the canopy temperature of the crop in the first zone i when the number of grids ii intersecting the annulus iii is a predetermined number.
It is generally preferred that the predetermined number is the number of grids ii that meet the minimum requirement of measurement accuracy, i.e., the predetermined number is 100. The equipment investment of the crop canopy temperature acquisition system provided by the embodiment of the invention is further reduced by reducing the number of the temperature sensors 3.
In addition, the canopy temperature acquiring system provided by the embodiment of the invention can also adopt a circular sprinkler provided with a variable irrigation system, and the variable irrigation system is used for adjusting the sprinkling irrigation quantity of the circular sprinkler. After a reasonable irrigation system is formulated according to the acquired temperature of the crop canopy in a certain area, the circular sprinkler can be directly controlled by a variable irrigation system on the circular sprinkler to adjust the irrigation water volume of the area. Therefore, the time from acquiring the canopy temperature to guiding actual irrigation through the canopy temperature is effectively shortened, and the scientific guidance of the acquired canopy temperature on an irrigation system is ensured.
In conclusion, the crop canopy temperature detection system provided by the embodiment of the invention fully utilizes the characteristics of large sprinkling coverage area and high automation degree of the circular sprinkling machine to realize measurement of canopy temperature of a large-area crop planting area, effectively reduces labor cost and equipment cost of a crop canopy temperature measurement mode, and has a good popularization prospect.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent replacements, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A crop canopy temperature acquisition system, comprising: the device comprises a circular sprinkler, a plurality of temperature sensors (3) and a client terminal;
the temperature sensor (3) is positioned below a truss of the circular sprinkler and is connected with the circular sprinkler through a fixing rod (22) arranged in the vertical direction; the plurality of temperature sensors (3) are arranged along the length direction of the truss of the circular sprinkler; when the circular sprinkler runs, the temperature sensor (3) can do circular motion by taking a central tower of the circular sprinkler as a circle center;
the client terminal is electrically connected with the temperature sensor (3);
the temperature sensor (3) is used for acquiring the temperature information of the crop canopy and outputting the temperature information; the client terminal is used for receiving the temperature information;
the fixing rod (22) is fixedly connected with a tie bar (16) of the circular sprinkler, and the fixing rod (22) can stretch out and draw back along the vertical direction and is used for adjusting the distance from the temperature sensor (3) to the crop canopy;
wherein the arrangement density of the temperature sensors (3) along the length direction of the truss of the circular sprinkler is obtained by the following method:
step 1, determining a sprinkling irrigation area boundary which can be covered by the circular sprinkling irrigation machine, wherein the boundary is enclosed into a first area;
step 2, dividing the first area by using a preset number of square grids, wherein the preset number is greater than or equal to 100, and the preset number refers to the sum of the number of grids completely located in the first area and the number of grids located in the first area, the area of which is greater than or equal to 1/2 of the area of the grids;
step 3, drawing a plurality of rings in the first area by taking the center tower (11) of the circular sprinkler as a circle center and the diameter of a circle formed by the projection of the effective measuring range of one temperature sensor (3) on the plane where the crop canopy is located as a radius difference, wherein the rings do not intersect;
and 4, when the number of the grids crossed with the rings is equal to the preset number, the number of the rings is the number of the temperature sensors (3) required by the circular sprinkler.
2. The canopy temperature acquisition system according to claim 1, characterized in that the temperature sensor (3) is an infrared temperature sensor.
3. The crop canopy temperature acquisition system of claim 1, further comprising: the two ends of the connecting rod (21) are respectively and fixedly connected with the two tie bars (16) of the circular sprinkler;
the fixing rod (22) comprises an outer rod (221) and an inner rod (222); the outer rod (221) is connected with the connecting rod (21), and a part of the inner rod (222) in the length direction is positioned inside the outer rod (221) and can move along the axial direction of the outer rod (221); a positioning element (23) is arranged on the side wall of the outer rod (221), and the positioning element (23) limits the movement of the inner rod (222) along the axial direction of the outer rod (221);
the temperature sensor (3) is arranged at the lower end of the inner rod (222).
4. The crop canopy temperature acquisition system according to claim 3, characterized in that a protective cover (25) is connected to the lower end of the inner rod (222), and the temperature sensor (3) is arranged inside the protective cover (25).
5. Crop canopy temperature acquisition system according to claim 4, characterized in that the material of the protective cover (25) is a thermally insulating material.
6. The crop canopy temperature acquisition system of claim 1, further comprising at least one collector and a server;
the collector is electrically connected with the temperature sensor (3), the server is connected with the collector through a network, and the client terminal is connected with the server through a network;
the collector is used for supplying power to the temperature sensor (3), acquiring temperature information sent by the temperature sensor (3) and sending the temperature information to the server;
the server is used for receiving and storing the temperature information and sending the temperature information to the client terminal.
7. The crop canopy temperature harvesting system of claim 6, further comprising a receiver disposed on the end span of the circular sprinkler, the receiver connected to the server via a network;
the receiver is used for receiving the position information of the tail end span body of the circular sprinkler sent by a satellite navigation system and sending the position information to the server.
8. The crop canopy temperature acquisition system of claim 1, wherein the predetermined number is 100.
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| CN108507936A (en) * | 2018-06-07 | 2018-09-07 | 上海三凯建设管理咨询有限公司 | A kind of building soil wind erosion measuring device and assay method |
| CN111765975B (en) * | 2020-07-10 | 2021-05-18 | 中国水利水电科学研究院 | Method for determining sampling time interval of sprinkler-mounted infrared temperature sensor system |
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