JP2023132539A - Work management method, work management system, and work management program - Google Patents

Abstract

To determine a further precise work area.SOLUTION: A work management method includes acquiring first position information which represents a position of a work device 100 that performs work in a field 500 and is measured at a first sampling interval. In addition, the work management method includes acquiring second position information which represents the position of the work device 100 that performs work in the field 500 and is measured at a second sampling interval at a second frequency lower than a first frequency of acquiring the first position information. The work management method includes, based on a second period in which the position represented by the second position information is measured and a first period in which the position represented by the first position information is measured, determining, in the first position information and the second position information, third position information used for determining a work area 600 in which the work has been performed by the work device 100. The work management method includes determining the work area 600 in which the work has been performed by the work device 100 based on the third position information.SELECTED DRAWING: Figure 8

Description

The present invention relates to a work management method, a work management system, and a work management program.

In recent years, research has been conducted into using information regarding operations in the field in the analysis of cultivation management.

Patent Document 1 discloses a technology in which a server acquires location information indicating the location of a work vehicle that performs work, and identifies a work area in which the work vehicle performs work based on the acquired position information. .

JP 2021-23263 Publication

In the technology described in Patent Document 1, the server determines the work area based on the position of the work vehicle that moved during work, so if the position information of the work vehicle during a part of the period is missing, it is difficult to identify the exact work area. Can not do it. Here, if the power of the work vehicle is turned off before the position information is output from the work vehicle, the position information of the work vehicle during a part of the period may not be output to the server.

In view of the above situation, one of the purposes of the present disclosure is to more accurately determine a work area. Other objectives can be understood from the following description and description of the embodiments.

Below, means for solving the problems will be explained using numbers and symbols used in the detailed description. These numbers and symbols are added in parentheses for reference in order to show an example of the correspondence between the claims and the detailed description. Therefore, the scope of the claims should not be construed as being limited by the parenthesized descriptions.

A work management method according to an embodiment for achieving the above object acquires first position information that represents the position of a work device (100) that performs work in a field (500) and is measured at a first sampling interval. Including. In addition, the work management method expresses the position of the work device (100) that performs work in the field (500), and uses second position information measured at a second sampling interval from a first frequency of acquiring the first position information. including acquiring at a lower second frequency. The work management method is based on the second period in which the position represented by the second position information was measured and the first period in which the position represented in the first position information was measured. Among the position information, the third position information is used to determine the work area (600) where the work is performed by the work device (100). The work management method includes determining a work area (600) in which work is performed by the work device (100) based on the third position information. The work management method includes outputting area information representing a work area (600).

A work management system (1000) according to an embodiment for achieving the above object includes an information acquisition section (250), an area determination section (260), and an area information output section (270). The information acquisition unit (250) represents the position of the working device (100) that performs work in the field (500), and includes first position information measured at the first sampling interval and the position of the working device (100) that performs work in the field (500). (100) and obtain second position information measured at a second sampling interval. The area determination unit (260) determines the first position information based on the second period in which the position represented by the second position information was measured and the first period in which the position represented in the first position information was measured. Among the second position information, the third position information is determined to be used for determining the work area (600) where the work is performed by the work device (100). Furthermore, the area determination unit (260) determines the work area (600) in which the work was performed by the work device (100) based on the third position information. The area information output unit (270) includes outputting area information representing the work area (600). Further, the second frequency at which the information acquisition unit (250) acquires the second location information is lower than the first frequency at which the information acquisition unit (250) acquires the first location information.

A work management program (420) according to an embodiment for achieving the above object includes first position information that represents the position of a work device (100) that performs work in a field (500), and that is measured at a first sampling interval. The arithmetic device (120, 220, 320) is caused to acquire the . Further, the work management program (420) represents the position of the work device (100) that performs work in the field (500), and uses the second position information measured at the second sampling interval to the second position information measured at the second sampling interval. The calculation device (120, 220, 320) is caused to perform acquisition at a second frequency lower than the first frequency. The work management program (420) calculates the first position information based on the second period in which the position represented by the second position information was measured and the first period in which the position represented in the first position information was measured. and the second position information, the calculation device (120, 220, 320) is caused to determine the third position information used for determining the work area (600) in which the work was performed by the work device (100). The work management program (420) causes the computing device (120, 220, 320) to determine the work area (600) in which the work device (100) has performed the work based on the third position information. The work management program (420) causes the computing device (120, 220, 320) to output area information representing the work area (600).

According to the above embodiment, even if the acquired first position information is missing, the work management system can determine a more accurate work area.

FIG. 1 is a schematic diagram of a work management system in one embodiment. FIG. 1 is a diagram showing the configuration of a working device in an embodiment. FIG. 3 is a diagram for explaining operation information output by a working device in one embodiment. FIG. 1 is a diagram showing the configuration of a working device in an embodiment. It is a diagram showing functional blocks executed by the work management system in one embodiment. FIG. 1 is a diagram showing the configuration of a work management device in an embodiment. FIG. 2 is a diagram showing the configuration of a terminal in one embodiment. It is a flow chart showing processing by a work management system in one embodiment. FIG. 3 is a diagram for explaining an image representing a work area displayed on a terminal in one embodiment. FIG. 3 is a diagram for explaining an image representing a work area displayed on a terminal in one embodiment.

(Embodiment 1)
A work management system 1000 according to this embodiment of the invention will be described with reference to the drawings. In this embodiment, as shown in FIG. 1, a work management system 1000 includes a work device 100, a work management device 200, and a terminal 300. The work management device 200 is communicably connected to the work device 100 and the terminal 300 via a network 20, for example, the Internet.

The work device 100 moves within the field 500 and performs work. The work device 100 includes, for example, a tractor that pulls a work machine 101, as shown in FIG. The work device 100 outputs operation information representing the state of the work device 100 to the work management device 200 while working in the field 500 . The operating information includes first position information representing the position of the working device 100 and state information representing the state of the working device 100. Performance information is obtained at short intervals, for example every 10 seconds. Therefore, the amount of data per unit time of operating information is large.

In order to reduce communication load, operational information is stored in a storage device when measured, and under certain conditions, such as that the amount of stored operational information exceeds a threshold, or that a predetermined period of time has elapsed since the start of storage. It will be output if the following conditions are met. For example, the operating information is output at 120 minute intervals. Further, the operation information is output when the prime mover 102 of the working device 100, for example, the engine, is stopped. Here, when the prime mover 102 is stopped, the working device 100 may stop the supply of power from the battery 103 by using the cut switch. In this case, the operating information may not be output when the prime mover 102 is stopped.

For example, as shown in FIG. 3, when the work device 100 satisfies a predetermined condition, the work device 100 transmits operation information regarding the moving route 510 traveled until the condition is met to the work management device 200 at an output position 520 where the predetermined condition is met. Output to. For example, when the work device 100 satisfies a predetermined condition, it outputs the operation information regarding the first movement route 510-1 at the first output position 520-1. Further, the work device 100 outputs operation information regarding the second movement route 510-2 at the second output position 520-2, and outputs operation information regarding the third movement route 510-3 at the third output position 520-3. . However, in the working device 100, the prime mover 102 may be stopped after moving along the fourth moving route 510-4, and the operating information regarding the fourth moving route 510-4 may not be output.

The work management device 200 determines the work area in which work is performed by the work device 100 based on the operation information. Here, if the work device 100 does not output operation information regarding a part of the movement route 510, for example, the fourth movement route 510-4, the work management device 200 cannot receive operation information regarding the work of the part of the movement route 510. . For this reason, the work management device 200 may not be able to detect the work of the work device 100 on some movement routes 510 that cannot be received, for example, the fourth movement route 510-4, and may not be able to accurately determine the work area.

Here, in order to grasp the real-time position of the work device 100, the work device 100 is measured at a frequency lower than the frequency at which the first position information included in the operation information is measured, for example, at one-minute intervals. The measured second position information is output to the work management device 200 at a second frequency higher than the first frequency at which the first position information is output, for example, at one-minute intervals. The work management device 200 complements the position information of the work device 100 during the period corresponding to the unreceivable operation information using the second position information. Thereby, the work management device 200 more accurately determines the work area in which the work was performed by the work device 100.

(Work management system configuration)
The configuration of work device 100 included in work management system 1000 shown in FIG. 1 will be described. The working device 100 includes a prime mover 102 and a battery 103, as shown in FIG. The prime mover 102 generates power to rotate the wheels and move the working device 100. Further, the power generated by the prime mover 102 is transmitted to the working machine 101 to operate the working machine 101, for example, to rotate the tilling claws 104 of a rotary tiller. The work device 100 may be a device integrated with the work machine 101, such as a combine harvester, or may be a drone that sprays agricultural chemicals.

Further, the work device 100 includes a positioning device 110, a calculation device 120, a communication device 130, and a storage device 140, as shown in FIG. The positioning device 110 measures the position at each time when the work device 100 moves. The positioning device 110 includes, for example, a GNSS (Global Navigation Satellite System) receiver.

The communication device 130 is electrically connected to the network 20 and communicates with the work management device 200 via the network 20. For example, the communication device 130 transfers operating information from the computing device 120 to the work management device 200. The communication device 130 includes various interfaces such as a transmitter/receiver used for wireless communication such as a wireless LAN (Local Area Network) or a cellular network, a NIC (Network Interface Card), and a USB (Universal Serial Bus).

The storage device 140 stores various data for outputting information to the work management device 200, for example, the positioning program 400. The storage device 140 is used as a non-transitory tangible storage medium that stores the positioning program 400. The positioning program 400 may be provided as a computer program product recorded on the computer-readable storage medium 1 or may be provided as a computer program product that can be downloaded from a server.

The computing device 120 is used for various data processing to execute the positioning program 400 and output information to the work management device 200. For example, the arithmetic device 120 includes a central processing unit (CPU), a dedicated board, and the like.

By reading and executing the positioning program 400, the arithmetic device 120 realizes a first position output section 150 and a second position output section 160, as shown in FIG. The first position output unit 150 measures the position of the working device 100 at each time and stores first position information representing the measured position in the storage device 140. The first position output unit 150 also measures the state of the working device 100 and stores state information representing the measured state in the storage device 140. The first position output unit 150 outputs operation information including the stored first position information and status information to the work management device 200. The second position output unit 160 measures the position of the work device 100 at a lower frequency than the first position information, and outputs second position information representing the measured position to the work management device 200.

Here, the status information includes information representing, for example, the speed of the work device 100, the steering angle, the engine rotation speed, the ON/OFF status of various clutches, the position information of the work device 100 at each time, the work period, and the like. When the working device 100 is a vehicle that pulls the working machine 101, for example, a tractor, the operation information indicates the PTO (power take-off) rotation speed and the posture of the working machine 101 when transmitting power to the working machine 101. Information such as hitch height and lift arm angle may also be included. Further, the status information may include the amount of work performed by the work device 100 at each time, such as the amount of crops planted, the amount of pesticide sprayed, and the amount of crops harvested.

Next, the configuration of the work management device 200 will be explained. As shown in FIG. 6, the work management device 200 includes an input/output device 210, an arithmetic device 220, a communication device 230, and a storage device 240. Work management device 200 is, for example, a computer. Information for the arithmetic unit 220 to execute processing is input to the input/output device 210 . In addition, the input/output device 210 outputs the results of processing performed by the arithmetic device 220. The input/output device 210 includes various input devices and output devices, and includes, for example, a keyboard, a mouse, a microphone, a display, a speaker, a touch panel, and the like. The input/output device 210 may be omitted.

The communication device 230 is electrically connected to the network 20 and communicates with each device via the network 20. For example, the communication device 230 transfers operating information acquired from the work device 100 to the computing device 220. Further, the signal generated by the arithmetic device 220 is transferred to the terminal 300. The communication device 230 includes various interfaces such as a NIC (Network Interface Card) and a USB (Universal Serial Bus).

The storage device 240 stores various data, such as work data 410 and a work management program 420, for determining a work area in which work is performed by the work device 100. The storage device 240 is used as a non-transitory tangible storage medium that stores the work management program 420. The work management program 420 may be provided as a computer program product recorded on the computer readable storage medium 2 or may be provided as a computer program product downloadable from a server.

Work data 410 stores operation information acquired from work device 100 and second position information.

Computing device 220 is used for various data processing to execute work management program 420 and to determine information regarding work performed by work device 100. For example, the arithmetic device 220 includes a central processing unit (CPU).

By reading and executing the work management program 420, the computing device 220 implements an information acquisition section 250, an area determination section 260, and an area information output section 270, as shown in FIG. The information acquisition unit 250 acquires operation information and second position information from the work device 100. The area determining unit 260 determines a work area based on first position information and second position information included in the operation information. Area information output unit 270 outputs area information representing the determined work area to terminal 300.

Next, the configuration of the terminal 300 will be explained. As shown in FIG. 7, the terminal 300 includes an input/output device 310, an arithmetic device 320, a communication device 330, and a storage device 340. Terminal 300 includes, for example, a computer, a tablet, a mobile phone, and the like. Information for the arithmetic unit 320 to execute processing is input to the input/output device 310 . In addition, the input/output device 310 outputs the results of processing performed by the arithmetic device 320. The input/output device 310 includes various input devices and output devices, and includes, for example, a keyboard, a mouse, a microphone, a display, a speaker, a touch panel, and the like.

The communication device 330 is electrically connected to the network 20 and communicates with each device via the network 20. For example, the communication device 330 transfers information acquired from the work management device 200 to the computing device 320. Further, the signal generated by the arithmetic device 320 is transferred to the work management device 200. The communication device 330 includes various interfaces such as a NIC (Network Interface Card) and a USB (Universal Serial Bus).

The storage device 340 stores various data for displaying area information, such as a display program 430. The storage device 340 is used as a non-transitory tangible storage medium that stores the display program 430. The display program 430 may be provided as a computer program product recorded on the computer readable storage medium 3 or may be provided as a computer program product downloadable from a server.

By reading and executing the display program 430, the arithmetic device 320 cooperates with the input/output device 310 to realize the display section 350 as shown in FIG. The display unit 350 displays the area information acquired from the work management device 200 on the input/output device 310. For example, the display unit 350 displays an image representing a work area where work is performed by the work device 100 on a map.

(Operation of work management device)
When the prime mover 102 of the work device 100 starts, the arithmetic device 120 of the work device 100 reads and executes the positioning program 400. The computing device 120 executes the process shown in FIG. 8, which is a work management method, by executing the positioning program 400.

In step S110, the first position output unit 150 implemented by the arithmetic device 120 outputs operating information. For example, the first position output unit 150 acquires first position information representing the position measured by the positioning device 110 of the work device 100 at a first sampling interval, for example, every 10 seconds, and acquires first position information representing the position measured by the positioning device 110 of the work device 100 from various sensors of the work device 100. Status information representing the status of the device 100 is acquired. The first position output unit 150 stores the acquired first position information and status information in the storage device 140 as operation information. The stored operation information is output to the work management device 200 when a predetermined condition is satisfied.

Further, the second position output unit 160 outputs second position information. For example, the second position output unit 160 acquires the second position information representing the position measured by the positioning device 110 of the working device 100 at a second sampling interval, for example, every one minute. The acquired second position information is sequentially output to the work management device 200 in order to transmit the current position of the work device 100 to the work management device 200. For example, the second position output unit 160 outputs the second position information at a second frequency lower than the first frequency at which the first position output unit 150 outputs the operating information, for example, the first position information. Further, the second sampling interval at which the position of the working device 100 represented by the second position information is measured may be longer than the first sampling interval at which the position of the working device 100 represented by the first position information is measured.

In step S120, the information acquisition unit 250 of the work management device 200 acquires operation information including first position information and second position information from the work device 100. The information acquisition unit 250 stores the acquired operating information and second position information in the work data 410.

In step S130, the area determining unit 260 determines third position information used to determine the work area of the work device 100 based on the first position information and the second position information. For example, the area determining unit 260 determines the first position information based on the first period in which the position represented by the first position information was measured and the second period in which the position represented in the second position information was measured. and the second position information, the third position information to be used for determining the work area is determined.

For example, based on the first position information, the region determination unit 260 acquires a first period in which the position represented by the first position information was measured. For example, in the example shown in FIG. 3, the first position information includes each time of the work device 100 moving along the first movement route 510-1, the second movement route 510-2, and the third movement route 510-3. represents the position in . Therefore, the first period in which the position represented by the first position information is measured represents the period during which the mobile device moves from the first movement route 510-1 to the third movement route 510-3.

Further, based on the second position information, the region determination unit 260 acquires a second period in which the position represented by the second position information was measured. For example, in the example shown in FIG. 3, the second position information is sequentially output to the work management device 200, so the second position information is outputted to the first movement route 510-1, the second movement route 510-2, and the third movement route 510. -3 and the position at each time of the working device 100 moving along the fourth movement route 510-4. Therefore, the second period in which the position represented by the second position information is measured represents the period during which the mobile device moves from the first movement route 510-1 to the fourth movement route 510-4.

The area determining unit 260 determines third position information to be used for determining the work area according to the size of the difference period that is not included in the first period among the second period. For example, when the difference period is larger than the threshold, the movement route 510 of the work device 100 corresponding to the first position information, for example, the first movement route 510-1, the second movement route 510-2, and the third movement route 510-3 The combined route has a large difference from the travel route 510 traveled by the work device 100 during work. In this case, the area determining unit 260 determines the second position information as the third position information to be used for determining the work area. Further, when the difference period is less than or equal to the threshold value, the difference between the movement route 510 of the work device 100 corresponding to the first position information and the movement path 510 traveled by the work device 100 during work is small. Therefore, the region determining unit 260 determines the first position information with a short position measurement interval as the third position information.

In step S140 shown in FIG. 8, the area determination unit 260 determines the work area where the work was performed by the work device 100 based on the third position information. For example, the area determination unit 260 determines an area surrounding the position represented by the third position information as the work area. For example, the area determination unit 260 determines the concave hull for the position represented by the third position information as the work area. For example, the area determination unit 260 determines the alpha shape for the position represented by the third position information as the work area.

The alpha shape forms a polygon that includes multiple points of interest when the parameter α is greater than or equal to zero. Specifically, when the parameter α is larger than zero, any two points among the plurality of points are on the boundary line of a disk whose radius is the reciprocal of the parameter α, and Only when there is a disk with no other points inside the disk will it be connected as an edge of the alpha shape. When the parameter α is equal to zero, a definition is established in which the disk in the definition when the parameter α is greater than zero is read as a half plane. In this case, any two points among the multiple points are connected as edges of the alpha shape only if there are no other points on either of the two half-planes divided by the straight line connecting these two points. Ru.

Therefore, when the parameter α is zero, the alpha shape determined as a concave hull represents a convex hull for the position represented by the third position information. As the parameter α increases, the radius of the disk for determining the sides of the alpha shape becomes smaller, so the alpha shape has a concave part added to the convex hull so as to surround the position represented by the third position information. represents the shape. As the parameter α becomes larger, the alpha shape has smaller recesses. The area determination unit 260 may determine an alpha shape using a predetermined parameter α, and determine the determined alpha shape as the work area. Further, the region determining unit 260 may determine alpha shapes of a plurality of parameters α, and determine one selected from the determined alpha shapes as the work region.

Here, the position represented by the third position information represents the position represented by the second position information, and in the example shown in FIG. Represents the measured position. Therefore, the area determination unit 260 determines the area where the work device 100 moved from the first movement route 510-1 to the fourth movement route 510-4 and worked there as the work area.

In step S150 shown in FIG. 8, area information output unit 270 outputs area information representing the determined work area to terminal 300. For example, as shown in FIG. 9, the area information output unit 270 outputs information constituting an image representing on a map a farm field 500 and a work area 600 in which the work device 100 worked in the field 500.

In step S160 shown in FIG. 8, the display unit 350 of the terminal 300 displays area information representing the work area 600. For example, as shown in FIG. 9, the display unit 350 displays an image representing on a map a work area 600 in which the work device 100 worked in the field 500.

The work management system 1000 determines the work area 600 more accurately even if the period in which the position indicated in the operation information representing the state of the work device 100 was measured is shorter than the period in which the work device 100 performed the work. can do. Further, when the period in which the position represented in the operation information was measured is similar to the period in which the work was performed by the work device 100, the work management system 1000 uses the first position information with a short measurement interval. The work area 600 can be determined with high accuracy.

(Modified example)
The configuration described in the embodiment is an example, and the configuration can be changed within a range that does not impede functionality. In step S130, when the difference period representing the difference between the first period in which the first position information was measured and the second period in which the second position information was measured is greater than the threshold, the area determining unit 260 information and second location information for a second period that is not included in the first period may be determined as the third location information. For example, based on the first position information, the region determination unit 260 acquires a first period in which the position represented by the first position information was measured. Further, based on the second position information, the region determination unit 260 acquires a second period in which the position represented by the second position information was measured. The area determining unit 260 extracts a difference period that is not included in the acquired first period from the second period, and extracts partial position information measured during the extracted difference period from the second position information. For example, in the example shown in FIG. 3, the region determining unit 260 determines the position information corresponding to the fourth moving route 510-4 measured during the difference period as the partial position information.

In this case, in step S140, the area determining unit 260 determines the work area 600 using the first position information and the partial position information. In the example shown in FIG. 3, the first position information represents positions corresponding to the first movement route 510-1 to the third movement route 510-3. Further, the partial position information represents a position corresponding to the fourth movement route 510-4. Therefore, the area determination unit 260 determines as the work area 600 an area including positions corresponding to the first movement route 510-1 to the fourth movement route 510-4.

Further, in step S140, the area determination unit 260 determines the first partial area 610 using the first position information, and the second partial area 620 using the partial position information, as shown in FIG. Good too. In this case, in step S150 shown in FIG. 8, the area information output unit 270 may output a work area 600 that distinguishably represents the first partial area 610 and the second partial area 620. For example, the area information output unit 270 outputs information constituting an image that distinguishably represents the first partial area 610 and the second partial area 620 on a map. In step S160, the display unit 350 of the terminal 300 displays area information that distinguishably represents the first partial area 610 and the second partial area 620.

Furthermore, in step S140, the method of determining the second partial area 620 using the partial position information may be the same as or different from the method of determining the first partial area 610 using the first position information. For example, the region determining unit 260 may determine the second partial region 620 using the partial position information using a method different from the method of determining the first partial region 610 using the first position information. For example, the region determining unit 260 determines the alpha shape for the position represented by the first position information as the first partial region 610. Further, the region determining unit 260 may determine the alpha shape for the position represented by the partial position information as the second partial region 620 using a parameter α different from the parameter α used to determine the first partial region 610. good. For example, since the measurement interval of the second position information is larger than the measurement interval of the first position information, the parameter α used to determine the second partial area 620 is smaller than the parameter α used to determine the first partial area 610. Good too.

Further, in step S130, when the difference period representing the difference between the first period in which the first position information was measured and the second period in which the second position information was measured is greater than the threshold, the area determining unit 260 Location information including both the first location information and the second location information may be determined as the third location information. In this case, since the position of the work device 100 in the first period is included in both the position represented by the first position information and the position represented by the second position information, it is used to determine the work area 600. Location information will increase. Therefore, the area determination unit 260 can determine the work area 600 in more detail.

The region determining unit 260 may further determine information regarding the work performed by the work device 100, for example, the work type, using the operation information including the first position information. The work type represents the type of work performed by the work device 100, such as sowing, plowing, pesticide spraying, and harvesting. For example, the region determining unit 260 determines the work type using a trained model obtained by machine learning. In this case, the trained model has been trained to determine the work type from the operation information. Further, the region determining unit 260 may determine the work type based on the model of the work device 100. In this case, the storage device 240 stores work correspondence data that associates the model of the work device 100 with the work type. The area determination unit 260 determines the type of work based on the work correspondence data. Information representing the determined work type is output to the terminal 300 by the area information output unit 270. The display unit 350 of the terminal 300 displays the work type of the work performed in the work area 600 based on information acquired from the area information output unit 270 of the work management device 200.

The embodiments and modified examples described above are merely examples, and the configurations described in each embodiment and modified example may be arbitrarily changed and/or combined in any manner within a range that does not impede functionality. It's okay. Furthermore, some of the functions described in the embodiments and modified examples may be omitted if the necessary functions can be realized. For example, the work management program 420 may include a positioning program 400 and a display program 430. Furthermore, the terminal 300 may execute some or all of the processing of the work management device 200. Furthermore, the work management device 200 may execute some or all of the processing of the terminal 300.

Further, some processing of the work device 100, for example, the second position output unit 160, may be realized by the terminal 300. In this case, the storage device 340 of the terminal 300 stores the positioning program 400. The arithmetic device 320 of the terminal 300 reads and executes the positioning program 400 to realize the second position output section 160. The terminal 300 includes a positioning device 110 and moves together with the work device 100 to measure the position of the work device 100. Second position information representing the measured position is output from the terminal 300 to the work management device 200.

1, 2, 3: Storage medium 20: Network 100: Working device 101: Working machine 102: Prime mover 103: Battery 104: Tilling claw 110: Positioning device 120: Arithmetic device 130: Communication device 140: Storage device 150: First position Output section 160: Second position output section 200: Work management device 210: Input/output device 220: Arithmetic device 230: Communication device 240: Storage device 250: Information acquisition section 260: Area determination section 270: Area information output section 300: Terminal 310: Input/output device 320: Arithmetic device 330: Communication device 340: Storage device 350: Display unit 400: Positioning program 410: Work data 420: Work management program 430: Display program 500: Field 510: Movement route 520: Output position 600 : Work area 610 : First partial area 620 : Second partial area 1000 : Work management system

Claims (9)

obtaining first position information representing a position of a working device performing work in a field and measured at a first sampling interval;
acquiring second position information representing the position of the working device that performs the work in the field and measured at a second sampling interval at a second frequency lower than a first frequency of acquiring the first position information; ,
the first position information and the second position based on a second period in which the position represented by the second position information was measured and a first period in which the position represented in the first position information was measured; Among the information, determining third position information for use in determining a work area in which the work is performed by the work device;
determining the work area in which the work was performed by the work device based on the third position information;
outputting area information representing the work area;
work management methods including; Determining the third location information includes:
The work management method according to claim 1, further comprising determining the second location information as the third location information when a difference period that is not included in the first period in the second period is greater than a threshold value. Determining the third location information includes:
When a difference period that is not included in the first period in the second period is greater than a threshold, fourth position information representing a position measured in the difference period among the second position information and the first position information The work management method according to claim 1, further comprising: determining as the third location information. Determining the work area includes:
4. The work management method according to claim 3, further comprising: determining a concave hull of a position represented by the first position information and a position represented by the fourth position information as the work area. Determining the work area includes:
determining a first partial area in which the work device performed the work in the first period based on the first position information;
determining a second partial area in which the work device performed the work during the difference period based on the fourth position information;
determining a combined area of the first partial area and the second partial area as the work area;
The work management method according to claim 3, comprising: 6. The work management method according to claim 5, wherein a method for determining the second partial area is different from a method for determining the first partial area. 7. The work management method according to claim 5, wherein the area information includes information constituting an image that distinguishably represents the first partial area and the second partial area. First position information representing the position of a working device that performs work in the field and measured at a first sampling interval, and second position information representing the position of the working device performing the work in the field and measured at a second sampling interval. 2. an information acquisition unit that acquires position information;
the first position information and the second position based on a second period in which the position represented by the second position information was measured and a first period in which the position represented in the first position information was measured; Among the information, third position information is determined for use in determining the work area in which the work has been performed by the work device, and based on the third position information, the work area in which the work has been performed by the work device is determined. an area determination unit that determines;
an area information output unit that outputs area information representing the work area;
Equipped with
A second frequency at which the information acquisition unit acquires the second location information is lower than a first frequency at which the first location information is acquired. obtaining first position information representing a position of a working device performing work in a field and measured at a first sampling interval;
acquiring second position information representing the position of the working device that performs the work in the field and measured at a second sampling interval at a second frequency lower than a first frequency of acquiring the first position information; ,
the first position information and the second position based on a second period in which the position represented by the second position information was measured and a first period in which the position represented in the first position information was measured; Among the information, determining third position information for use in determining a work area in which the work is performed by the work device;
determining the work area in which the work was performed by the work device based on the third position information;
outputting area information representing the work area;
A work management program that causes a computing device to execute.

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