CN116235687B - Remote network harvester yield measurement system and yield measurement method thereof - Google Patents
Remote network harvester yield measurement system and yield measurement method thereof Download PDFInfo
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- CN116235687B CN116235687B CN202211703950.1A CN202211703950A CN116235687B CN 116235687 B CN116235687 B CN 116235687B CN 202211703950 A CN202211703950 A CN 202211703950A CN 116235687 B CN116235687 B CN 116235687B
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- 238000005259 measurement Methods 0.000 title claims abstract description 27
- 238000000691 measurement method Methods 0.000 title description 6
- 230000001133 acceleration Effects 0.000 claims abstract description 34
- 238000003306 harvesting Methods 0.000 claims abstract description 26
- 238000000034 method Methods 0.000 claims abstract description 13
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- 235000013339 cereals Nutrition 0.000 description 104
- 238000010586 diagram Methods 0.000 description 6
- 238000004804 winding Methods 0.000 description 4
- 241001553178 Arachis glabrata Species 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 235000020232 peanut Nutrition 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 235000017060 Arachis glabrata Nutrition 0.000 description 2
- 235000010777 Arachis hypogaea Nutrition 0.000 description 2
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- 238000009825 accumulation Methods 0.000 description 2
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- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 241001124569 Lycaenidae Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
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- 238000004880 explosion Methods 0.000 description 1
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- 238000011897 real-time detection Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D41/00—Combines, i.e. harvesters or mowers combined with threshing devices
- A01D41/12—Details of combines
- A01D41/127—Control or measuring arrangements specially adapted for combines
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/02—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
- H04L67/025—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP] for remote control or remote monitoring of applications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
- H04W4/029—Location-based management or tracking services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/38—Services specially adapted for particular environments, situations or purposes for collecting sensor information
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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- Computing Systems (AREA)
- General Health & Medical Sciences (AREA)
- Medical Informatics (AREA)
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- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The invention discloses a remote network harvester yield measurement system, which comprises: the node equipment end sensing device comprises an information monitoring unit and at least one grain height sensor, wherein the grain height sensor mainly comprises a main support, an auxiliary support, a first electromagnet, a second electromagnet, a string clamping device, a vibration motor and an acceleration sensor, the string is vibrated through the vibration motor, the vibration frequency of the string is obtained through the acceleration sensor, and finally the grain height in the storage bin is obtained. The invention also discloses a yield measuring method of the remote network harvester yield measuring system, which realizes the networked supervision of grain yield, harvester operation state and key parameters distributed in the management area through the combination of the multipoint grain height sensor and the harvesting area yield measuring, and improves the applicability and accuracy of yield measuring.
Description
Technical Field
The invention relates to the technical field of automatic yield measurement of a harvester, in particular to a remote network harvester yield measurement system and a yield measurement method thereof.
Background
The real-time information acquisition system of crop yield is an important component of accurate agriculture, can obtain the yield information of the current field, can provide reference for seeding operation in the next year, and provides important scientific basis for agricultural informatization and automatic development. The current common yield measuring system can be divided into weighing type measurement, volumetric type measurement, impulse type measurement and the like.
The invention discloses a real-time yield measuring system of a grain combine, and aims to provide a portable yield measuring device, wherein the measuring device is used for measuring the grain height in a harvester loading bin, a capacitive material level sensor is communicated with an ARM processor through an RS485 communication protocol, the measured grain height in the harvester loading bin is transmitted to the ARM processor, the ARM processor is used for calculating the grain volume in the harvester loading bin in real time according to the height in the harvester loading bin, and the yield information of grains is obtained in real time according to the preset grain density. The yield information is displayed in a cab of the grain combine harvester through the display module. The invention has high measurement accuracy and small error. However, the internal structure of the device is too complex, difficult to maintain and has general durability.
The Chinese patent document CN204291801U discloses a real-time peanut harvester yield measuring device, which feeds back the weighing measurement value of a weight sensor to a control terminal, can directly obtain the yield of peanuts, and has perfect functions. The digging shovel angle sensor and the speed sensor carried by the equipment can be converted into harvesting areas, so that the yield measuring equipment can count peanut yield in a certain geographic position and a certain planting area. However, the device has a complex structure, and is high in modification cost and difficult to modify on the basis of the existing harvester.
The Chinese patent document CN108811696A discloses a grain mass flow measurement device of a combine harvester based on ultrasonic suspension, which is arranged at a grain outlet of the combine harvester and can realize real-time detection of grain flow in the working process of the combine harvester. The device comprises a data acquisition part, an acceleration sensor and a signal transmission processing part. The data acquisition part adopts a single-shaft ultrasonic standing wave suspension device, and the signal acquisition device is suspended in the air, so that the influence of vibration of the harvester on signal acquisition can be eliminated; the grain impact signals collected by the acceleration sensor are amplified by the signal amplifier and then transmitted to the singlechip through the wireless transmitting chip, the singlechip obtains real-time grain flow through a certain algorithm, and the grain yield is obtained by combining the cutting width and the advancing speed of the harvester and is stored in the storage unit. The device has high detection precision and can accurately measure the yield of the grains in the field in real time. But the device is costly and complex to install.
Therefore, the invention is of great significance in a simple, economical and accurate real-time yield measuring method and device.
Disclosure of Invention
The invention aims to design and develop a remote network harvester yield measuring system, which is used for determining the height of grains in a bin through the combination of strings and vibration motors, so that the grain yield is obtained, the applicability and the accuracy are improved, the installation is convenient, and the use is simple.
The invention also designs and develops a yield measuring method of the remote network harvester yield measuring system, and realizes the networked supervision of grain yield, harvester operation state and key parameters distributed in a management area through the combination of the multipoint grain height sensor and the harvesting area yield measuring.
The technical scheme provided by the invention is as follows:
a remote network harvester yield measurement system, comprising:
The node equipment end sensing device is arranged on the supervision harvester and comprises an information monitoring unit and at least one grain height sensor, and is used for monitoring the operation state of the harvester;
the management end is connected with the node equipment end sensing device network and is used for storing and checking data;
Wherein, the grain height sensor includes:
the main bracket is detachably arranged between the top part and the bottom part of the bin of the harvester;
strings arranged in parallel on one side of the main cradle;
a vibration motor detachably fixed to the string;
And the acceleration sensor is detachably fixed on the string and is used for collecting the acceleration of the string.
Preferably, the information monitoring unit includes:
the GPS/Beidou positioning module is arranged on the harvester and used for detecting geographic position information of the harvester;
The data acquisition and processing module is connected with the acceleration sensor and the GPS/Beidou positioning module in a network manner and is used for receiving and transmitting data;
The 4G network communication module is connected with the data acquisition and processing module, and the 4G network communication module is connected with the management end network and used for transmitting data.
Preferably, the management end includes:
The server is connected with the 4G network communication module in a network manner and is used for receiving and storing data;
Statistical software, which interacts with the server for summarization and analysis of data;
and the user end interacts with the server and is used for viewing and managing data.
Preferably, the grain height sensor further comprises:
And one end of the auxiliary bracket is detachably arranged at one end of the main bracket, and the auxiliary bracket and the main bracket can longitudinally slide and fix.
Preferably, the grain height sensor further comprises:
The first electromagnet is arranged at the other end of the auxiliary bracket and is selectively fixed at the top of a bin of the harvester;
the second electromagnet is arranged at the other end of the main support, and the second electromagnet is selectively fixed at the bottom of the bin of the harvester.
Preferably, the grain height sensor further comprises:
The string clamp is detachably arranged at one end of the main bracket;
one end of the string is fixed on the string clamp, and the other end of the string is fixed on the other end of the main support.
Preferably, the grain height sensor further comprises:
An upper cover; and
A sensor base which is matched with the upper cover to form a containing cavity;
A vibration motor base which is clamped at one side of the vibration motor;
The vibration motor, the vibration motor base and the acceleration sensor are all arranged in the accommodating cavity, the string is clamped between the upper cover and one side of the neck of the vibration motor, one side of the accelerator sensor is connected with the vibration motor base, and the other side of the accelerator sensor is connected with the sensor base.
Preferably, the minimum distance between the grain height sensor and the grain inlet of the bin of the harvester is 30cm.
A method for measuring the yield of a remote network harvester measuring yield system, which comprises the following steps:
Step one, collecting position information of a harvester and vibration acceleration of strings;
step two, if the harvester reaches the farmland position and the height of grains in a bin of the harvester is greater than 0, judging that the harvester starts to operate;
wherein, grain height satisfies in the feed bin of harvester:
h＝a·f+b；
Wherein h is the height of grains in a bin of the harvester, a is a first adjusting parameter, f is the vibration frequency of a string, and b is a second adjusting parameter;
Step three, calculating grain yield according to the height of grains in a bin of the harvester:
wherein phi is grain yield, deltaV is grain production variation, deltaS is harvesting area variation;
Wherein, the grain production amount satisfies:
Wherein V is grain production, L is the length of a bin of the harvester, W is the width of the bin of the harvester, Is the average value of the heights of grains in a bin of the harvester;
the harvesting area satisfies:
S＝m×t；
Wherein S is the harvesting area, m is the header width of the harvester, and t is the travelling distance of the harvester;
And step four, if the harvester leaves from the farmland and the grain height in the granary of the harvester is not changed any more, judging that the harvesting of the harvester is finished, and uploading the equipment codes, the grain yield and the geographic position to a management end by the node equipment end sensing device.
Preferably, the first step further includes:
The tightness of the strings is adjusted to pull the strings at the intermediate positions of the strings so that the intermediate positions of the strings deviate by not more than 1cm.
The beneficial effects of the invention are as follows:
(1) The remote network harvester yield measuring system designed and developed by the invention utilizes the vibration frequency change of the string to obtain the height of grains in the bin, so that the volume of grains in the bin of the harvester can be obtained in real time, the real-time position of the harvester can be uploaded, the harvesting area is calculated, the harvesting condition of the harvester when harvesting grains in various places in real time is obtained, the remote network harvester yield measuring system has the advantages of convenience in installation, simplicity in use, small volume and the like, solves the problems of inaccurate measurement, large device and the like of the traditional device such as an impulse meter, is portable and detachable, is more convenient and simpler to maintain, and can be used for detecting the yield of different crops.
(2) According to the yield measurement method of the remote network harvester yield measurement system designed and developed by the invention, the multi-point grain height sensor and the area of the harvesting area are adopted to measure the yield in a combined manner, so that the grain yield, the harvester operation state and key parameters distributed in the management area are subjected to network supervision, and the monitoring data are automatically uploaded to the cloud server.
(3) According to the yield measuring method of the remote network harvester yield measuring system designed and developed by the invention, users with different authorities can remotely access the data of the management end server through the network browser, and browse, count, manage and maintain the harvesting data of the managed harvester equipment.
Drawings
Fig. 1 is a schematic structural diagram of a remote network harvester yield measurement system according to the present invention.
Fig. 2 is a schematic diagram of an assembly structure of the grain height sensor according to the present invention.
Fig. 3 is a schematic structural view of the grain height sensor according to the present invention.
Fig. 4 is a schematic diagram of an assembly structure of the main bracket and the auxiliary bracket according to the present invention.
Fig. 5 is a schematic view of a side structure of the string holder according to the present invention.
Fig. 6 is a schematic view of another side structure of the string clamp according to the present invention.
Fig. 7 is a schematic diagram of an explosion structure of the vibration sensing device according to the present invention.
Fig. 8 is a schematic diagram of an assembly structure of the vibration sensing device according to the present invention.
Fig. 9 is a network connection schematic diagram of the remote network harvester yield measurement system according to the present invention.
Fig. 10 is a flow chart of a yield measurement method of the yield measurement system of the remote network harvester.
Detailed Description
The present invention is described in further detail below to enable those skilled in the art to practice the invention by reference to the specification.
As shown in fig. 1, the remote network harvester yield measurement system provided by the invention comprises: the node equipment end sensing device is hung on the supervision harvester and has the functions of detecting the height of grains in a loading bin of the harvester, equipment codes, geographical positions and the like, and calculating and comprehensively judging the yield and the operation state of the grains; the management end is connected with the node equipment end through a network and is used for summarizing, storing, displaying and viewing data.
As shown in fig. 2, the node equipment end sensing device includes an information monitoring unit and at least one grain height sensor 120, the grain height sensor 120 is disposed in the bin 110 of the supervising harvester 100, as shown in fig. 3, the grain height sensor 120 includes: the main support 121, the auxiliary support 122, the first electromagnet 124, the second electromagnet 123, the string 125, the vibration sensing device 130 and the string clamp 140 are shown in fig. 4, one end of the auxiliary support 122 is slidably arranged at one end of the main support 121, and the auxiliary support 122 and the main support 121 are fixed through bolts, so that the height of the grain height sensor is adjusted, and the applicability of the grain height sensor is improved; the first electromagnet 124 is disposed at the other end of the sub-bracket 122, and is used for fixing the sub-bracket 122 at the top of the bin 110; a second electromagnet 123 is provided at the other end of the main support 121 for fixing the main support 121 to the bottom of the bin 110 such that the grain height sensor 120 is vertically fixed between the top and bottom of the bin 110; one end of the string 125 is fixed to the other end of the main frame 121 by a stud, and the other end is provided on the string clamp 140. As shown in fig. 5 and 6, the string holder 140 includes: the fixing plate 141, the connecting column 142, the winding column 143 and the handle 144, the fixing plate 141 is fixed on the other side of the main support 121 relative to the strings 125, two hanging lugs are oppositely arranged on the fixing plate 141, one end of the connecting column 142 is arranged on one side of the main support 121, the other end of the connecting column 142 penetrates through the main support 121 and the fixing plate 141 to be arranged on the other side of the main support 121, the winding column 143 rotatably penetrates through the two hanging lugs, the handle 144 is fixed on one end of the winding column 143, the other end of the strings 125 penetrates through the connecting column 142 and then winds on the winding column 143, and the tightness of the strings 125 is adjusted by rotating the handle 144. As shown in fig. 7 and 8, the vibration sensing device 130 includes: upper cover 131, sensor base 132, vibrations motor 133, vibrations motor base 134 and acceleration sensor 135, upper cover 131 and the mutual block of sensor base 132 form and hold the chamber for protect its inside original paper, prevent cereal impact, vibrations motor 133, vibrations motor base 134 and acceleration sensor 135 all set up in holding the intracavity, and vibrations motor 133, vibrations motor base 134 and acceleration sensor 135 set gradually between upper cover 131 and sensor base 132, wherein, are provided with the draw-in groove on the vibrations motor base 134, vibrations motor 133 block is on vibrations motor base 134, and when using, the string 125 is in close proximity on vibrations motor 133 for vibrations motor 133 can excite string 125, and the vibrations of string 125 are passed through the vibrations motor base and are transmitted to acceleration sensor 135.
In this embodiment, the first electromagnet 124 and the second electromagnet 123 are each independently powered.
As shown in fig. 9, the information monitoring unit includes an integrated GPS/beidou positioning module 202, a data acquisition and processing module 201 and a 4G network communication module, where the GPS/beidou positioning module 202 is disposed on the harvester and is used for detecting geographical position information of the harvester; the data acquisition and processing module 201 is connected with the acceleration sensor 135 and the GPS/Beidou positioning module 202 in a network manner and is used for receiving and transmitting data; the 4G network communication module is connected with the data acquisition and processing module 201, and the 4G network communication module is connected with the management end data processing system in a network manner, and functions to remotely upload data to the management end.
The management end comprises a server 301, statistical software and a user end 302, wherein the server is connected with the 4G network communication module in a network manner and is used for receiving and storing data and providing services for data of each node; the statistical software interacts with the server and is used for summarizing and analyzing data; the user side 302 interacts with the server 301 for viewing and managing data.
After the acceleration sensor 135 detects the vibration acceleration of the string 125, the data is transmitted to the data acquisition and processing module 201, the data acquisition and processing module 201 transmits the data and the vehicle positioning information acquired by the GPS/beidou positioning module 202 to the server 301, the server processes and stores the data, and the user side 302 can check and manage the data.
According to the remote network harvester yield measuring system designed and developed by the invention, after grains enter a harvester bin, a vibrating motor excites strings, the vibration frequency of the strings is measured by utilizing an acceleration sensor, the strings are only related to the vibration length, grains in the harvester bin are gradually increased, the length of the strings embedded into the grains is changed, the vibration length can be obtained by measuring the frequency, so that the grain height can be obtained, the volume of the grains in the harvester bin can be obtained in real time, the real-time position of the harvester can be uploaded, the harvesting area can be calculated, the harvesting condition of the harvester when the grains are harvested in real time in various places can be obtained, and the remote network harvester yield measuring system has the advantages of convenience in installation, simplicity in use, small volume and the like, solves the problems of inaccurate measurement, large device and the like of the conventional device such as an impulse meter, is portable and detachable, is more convenient and simple in maintenance and can be used for yield detection of different crops.
As shown in fig. 10, the invention further provides a yield measuring method of a yield measuring system of a remote network harvester, which specifically comprises the following steps:
step one, after initializing a yield measurement system, collecting position information of a harvester and vibration acceleration of strings;
Wherein the initializing includes: and the user end at the management end inputs relevant parameters of harvesting equipment at the node equipment end, user information and the like, wherein the parameters comprise the length L and the width W of a bin of the harvester, the node equipment code, the name, the unit, the address and the like of the user.
The minimum distance between the mounting position of at least one grain height sensor and the grain inlet is required to be 30cm, the influence of the impact on the acceleration sensor on the accuracy in the grain falling process is avoided, the tightness degree of the strings on the grain height sensor is regulated, one ends of the strings are connected with the clamping device, the other ends of the strings are fixed, the lengths of the two ends of the strings are regulated to be equivalent to the height of the main support, the strings are pulled at the middle positions of the strings, the clamping device is regulated, the middle positions of the strings deviate by not more than 1cm, the initial height of the strings and the height of the vibration motor after the mounting are measured, and the measurement is started when the grain height reaches the initial height of the strings.
The vibration acceleration of the string is collected specifically including:
By controlling the vibration time of the vibration motor and the acquisition time of the acceleration sensor, the acceleration sensor starts to acquire data after the vibration of the vibration motor is finished.
Step two, if the harvester reaches the farmland position and the height of grains in a bin of the harvester is greater than 0, judging that the harvester starts to operate;
After the grain height sensor detects the grain height along with the continuous entering of grain in the harvester bin and the grain height rises, the vibrating motor excites the string after the grain enters the harvester bin, the string vibrating frequency is measured by the acceleration sensor, and the grain in the harvester bin is gradually increased due to the fact that the string frequency is only related to the vibrating length, the string length of the buried grain is changed, the vibrating length can be obtained through the measuring frequency, and accordingly the grain height is obtained, and therefore the grain height in the harvester bin meets the following conditions:
h＝a·f+b；
Wherein h is the height of grains in a bin of the harvester, a is a first adjusting parameter, f is the vibration frequency of a string, and b is a second adjusting parameter;
The first adjusting parameter and the second adjusting parameter are obtained by calibrating a least square method after the frequency is measured under different grain heights before use, and the vibration frequency of the string is obtained by the acceleration data acquired by the acceleration sensor through Fourier change;
Step three, calculating grain yield according to the height of grains in a bin of the harvester and visually displaying:
wherein phi is grain yield, deltaV is grain production variation, deltaS is harvesting area variation;
Wherein, the grain production amount satisfies:
Wherein V is grain production, L is the length of a bin of the harvester, W is the width of the bin of the harvester, Is the average value of the heights of grains in a bin of the harvester;
the harvesting area satisfies:
S＝m×t；
Wherein S is the harvesting area, m is the header width of the harvester, and t is the travelling distance of the harvester;
Step four, if the harvester leaves from the farmland and the grain height in the granary of the harvester is not changed any more, judging that the harvesting of the harvester is finished, and uploading the equipment codes, the grain yield and the geographic position to a management-end data processing system by a node equipment-end sensing device;
and stopping measuring and feeding grains after detecting that the grain height reaches the height of the vibration motor.
And the statistics and analysis of the processing amount accumulation are completed through the statistical software of the management end, and the processing amount accumulation is the total harvesting amount of the single harvester or the plurality of harvesters selected by the user in a set time period.
Examples
Step one, after initializing a yield measurement system, collecting position information of a harvester and vibration acceleration of strings;
Wherein, length L=1000 mm of feed bin, width W=1500 mm of feed bin, the quantity of grain height sensor is 2.
Step two, judging that the harvester reaches a farmland position and the height of grains in a bin of the harvester is greater than 0, and judging that the harvester starts to operate;
calibrating the first adjusting parameter and the second adjusting parameter:
1. Fixing strings in a bin of a harvester;
2. the starting device is filled with grains with the volume A, and the vibration frequency A of the strings under the volume is obtained;
3. Filling grains with the volume B, namely the existing grain volume A+B in a harvester filling bin, and obtaining the vibration frequency B of strings under the volume;
4. Repeating the step3 until the grains are full;
According to the obtained height and frequency data, the values of the first adjusting parameter and the second adjusting parameter are respectively a=28.22 and b= -519.2 by utilizing a least square method.
After calibration, h= 28.22 ·f-519.2;
the grain heights measured by the two grain height sensors are respectively as follows:
h1＝28.22×30.13-519.2＝331.0686mm；
h2＝28.22×36.45-519.2＝509.410mm；
step three, calculating grain yield according to the height of grains in a bin of the harvester and visually displaying the grain yield;
S＝m×t＝3dm2；
thus, the first and second substrates are bonded together,
I.e. the grain yield is 2.101L/dm 2;
And fourthly, the harvester walks out of the farmland, the grain height in a granary of the harvester is not changed any more, the harvesting end of the harvester is judged, and the node equipment end sensing device uploads the equipment codes, the grain yield and the geographic position to the management end data processing system.
According to the yield measurement method of the remote network harvester yield measurement system designed and developed by the invention, the multi-point grain height sensor and the harvesting area are adopted to measure the yield in a combined manner, so that the grain yield, the harvester operation state and the key parameters distributed in the management area are subjected to network supervision, and the monitoring data are automatically uploaded to the cloud server.
Although embodiments of the present invention have been disclosed above, it is not limited to the details and embodiments shown, it is well suited to various fields of use for which the invention is suited, and further modifications may be readily made by one skilled in the art, and the invention is therefore not to be limited to the particular details and examples shown and described herein, without departing from the general concepts defined by the claims and the equivalents thereof.
Claims (6)
1. A remote network harvester yield measurement system, comprising:
The node equipment end sensing device is arranged on the supervision harvester and comprises an information monitoring unit and at least one grain height sensor, and is used for monitoring the operation state of the harvester;
the management end is connected with the node equipment end sensing device network and is used for storing and checking data;
Wherein, the grain height sensor includes:
the main bracket is detachably arranged between the top part and the bottom part of the bin of the harvester;
strings arranged in parallel on one side of the main cradle;
a vibration motor detachably fixed to the string;
the acceleration sensor is detachably fixed on the string and is used for collecting the acceleration of the string;
One end of the auxiliary bracket is detachably arranged at one end of the main bracket, and the auxiliary bracket and the main bracket can longitudinally slide and be fixed;
The first electromagnet is arranged at the other end of the auxiliary bracket and is selectively fixed at the top of a bin of the harvester;
The second electromagnet is arranged at the other end of the main bracket and is selectively fixed at the bottom of a bin of the harvester;
The string clamp is detachably arranged at one end of the main bracket;
An upper cover;
a sensor base which is matched with the upper cover to form a containing cavity;
A vibration motor base which is clamped at one side of the vibration motor;
The string clamping device comprises a string clamping device, a main support, a vibrating motor base, an acceleration sensor, an upper cover, a vibrating motor, a sensor base and a sensor base, wherein one end of the string is fixed on the string clamping device, the other end of the string is fixed on the other end of the main support, the vibrating motor base and the acceleration sensor are all arranged in the accommodating cavity, the string is clamped between the upper cover and the other side of the vibrating motor, one side of the acceleration sensor is connected with the vibrating motor base, and the other side of the acceleration sensor is connected with the sensor base.
2. The remote network harvester yield measurement system of claim 1, wherein the information monitoring unit comprises:
the GPS/Beidou positioning module is arranged on the harvester and used for detecting geographic position information of the harvester;
The data acquisition and processing module is connected with the acceleration sensor and the GPS/Beidou positioning module in a network manner and is used for receiving and transmitting data;
The 4G network communication module is connected with the data acquisition and processing module, and the 4G network communication module is connected with the management end network and used for transmitting data.
3. The remote network harvester yield measurement system of claim 2, wherein the management end comprises:
The server is connected with the 4G network communication module in a network manner and is used for receiving and storing data;
Statistical software, which interacts with the server for summarization and analysis of data;
and the user end interacts with the server and is used for viewing and managing data.
4. The remote network harvester measurement system of claim 3, wherein the grain height sensor is a minimum distance of 30cm from a bin inlet of the harvester.
5. A method for measuring yield of a remote network harvester measuring yield system, which uses the remote network harvester measuring yield system as set forth in any one of claims 1-4, comprising the steps of:
Step one, collecting position information of a harvester and vibration acceleration of strings;
step two, if the harvester reaches the farmland position and the height of grains in a bin of the harvester is greater than 0, judging that the harvester starts to operate;
wherein, grain height satisfies in the feed bin of harvester:
h＝a·f+b；
Wherein h is the height of grains in a bin of the harvester, a is a first adjusting parameter, f is the vibration frequency of a string, and b is a second adjusting parameter;
Step three, calculating grain yield according to the height of grains in a bin of the harvester:
wherein phi is grain yield, deltaV is grain production variation, deltaS is harvesting area variation;
Wherein, the grain production amount satisfies:
Wherein V is grain production, L is the length of a bin of the harvester, W is the width of the bin of the harvester, Is the average value of the heights of grains in a bin of the harvester;
the harvesting area satisfies:
S＝m×t；
Wherein S is the harvesting area, m is the header width of the harvester, and t is the travelling distance of the harvester;
And step four, if the harvester leaves from the farmland and the grain height in the granary of the harvester is not changed any more, judging that the harvesting of the harvester is finished, and uploading the equipment codes, the grain yield and the geographic position to a management end by the node equipment end sensing device.
6. The method of measuring yield of a remote network harvester measuring yield system of claim 5, wherein the first step further comprises:
The tightness of the strings is adjusted to pull the strings at the intermediate positions of the strings so that the intermediate positions of the strings deviate by not more than 1cm.
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