Work information management method, work information management system, and work information management program

Abstract

Determine whether the work was performed using one work device or multiple work devices. [Solution] The work information management method includes determining the shape of the work area 620 where work was performed by the first work device 30-1 based on the position of the first work device 30-1 at each time point. The work information management method also includes determining a first area of ​​the work area 620 based on the determined shape of the work area 620. The work information management method also includes determining the area moved by the first work device 30-1 based on the movement trajectory 630 of the first work device 30-1. Furthermore, the work information management method includes determining, based on the first area and the area moved, whether the work area 620 is a single work area 622 where work was performed by one work device 30, or a multiple work area 621 where work was performed by multiple work devices 30.

Description

Technical Field

[0001] The present invention relates to a work information management method, a work information management system, and a work information management program.

Background Art

[0002] In recent years, research has been conducted on farm management using information related to work in fields. In farm management, there are cases where the area and the region where work is actually performed by a work device are used.

[0003] Patent Document 1 discloses a technique for evaluating the work performed by a work device using the area of the region where the work device has performed work and the area of the field. In this technique, the area of the region where the work device has performed work is calculated by multiplying the travel distance by the work width at which work is performed when the work device moves.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, even during work, the work device may move without performing work. Therefore, the area obtained by multiplying the travel distance by the work width is larger than the area where work was actually performed. Also, the area where work was performed may be calculated by measuring the position of the work device at each time and using the convex hull of the measured multiple positions. However, in recent years, in one field, there may be cases where multiple work devices perform work. The inventor has found that in this case, the area obtained from the position information of the work device may be different from the area where work was performed by one work device.

[0006] In light of the above circumstances, one of the purposes of this disclosure is to determine whether the work performed on an area was performed using one work device or multiple work devices. Other purposes can be understood from the following description and the description of the embodiments. [Means for solving the problem]

[0007] The means for solving the problem are described below using the numbers and symbols used in the embodiments for carrying out the invention. These numbers and symbols are added in parentheses for reference to show an example of the correspondence between the claims and the embodiments for carrying out the invention. Therefore, the claims should not be interpreted restrictively because of the parenthetical statements.

[0008] A work information management method according to one embodiment for achieving the above objective includes determining the shape of the work area (620) where work was performed by the first work device (30-1) based on the position of the first work device (30-1) at each time point. The work information management method also includes determining a first area of ​​the work area (620) based on the determined shape of the work area (620). The work information management method also includes determining the area moved by the first work device (30-1) based on the movement trajectory (630) of the first work device (30-1). Furthermore, the work information management method includes determining, based on the first area and the area moved, whether the work area (620) is a single work area (622) where work was performed by one work device (30) or multiple work areas (621) where work was performed by multiple work devices (30).

[0009] A work information management system (1000) according to one embodiment for achieving the above objective comprises a shape determination unit (150), a movement area determination unit (160), and a region determination unit (170). The shape determination unit (150) determines the shape of the work area (620) where work was performed by the first work device (30-1) based on the position of the first work device (30-1) at each time, and determines the first area of ​​the work area (620) based on the determined shape of the work area (620). The movement area determination unit (160) determines the movement area of ​​the region moved by the first work device (30-1) based on the movement trajectory (630) of the first work device (30-1). The area determination unit (170) determines, based on the first area and the moving area, whether the work area (620) is a single work area (622) where work was performed by one work device (30) or multiple work areas (621) where work was performed by multiple work devices (30).

[0010] A work information management program (400) according to one embodiment for achieving the above objective causes the calculation unit (120, 220) to determine the shape of the work area (620) where work was performed by the first work device (30-1) based on the position of the first work device (30-1) at each time. The work information management program (400) also causes the calculation unit (120, 220) to determine the first area of ​​the work area (620) based on the determined shape of the work area (620). The work information management program (400) also causes the calculation unit (120, 220) to determine the area moved by the first work device (30-1) based on the movement trajectory (630) of the first work device (30-1). Furthermore, the work information management program (400) causes the arithmetic units (120, 220) to determine, based on the first area and the moving area, whether the work area (620) is a single work area (622) where work was performed by one work device (30) or a multiple work area (621) where work was performed by multiple work devices (30). [Effects of the Invention]

[0011] According to the above configuration, it is possible to determine whether the work was performed on an area using one work device or multiple work devices. [Brief explanation of the drawing]

[0012] [Figure 1] This is a schematic diagram of a work information management system in one embodiment. [Figure 2] This is a diagram illustrating the positioning location measured in a work device according to one embodiment. [Figure 3] This is a diagram illustrating the work area determined by a work information management device in one embodiment. [Figure 4] This figure illustrates the movement trajectory of a work device determined by a work information management device in one embodiment. [Figure 5] This diagram illustrates the working width of a work device in one embodiment. [Figure 6] This is a diagram illustrating the display information shown on a terminal in one embodiment. [Figure 7] This diagram shows the configuration of a work information management device in one embodiment. [Figure 8] This diagram shows a functional block that is executed by a work information management system in one embodiment. [Figure 9] This diagram shows the configuration of a terminal in one embodiment. [Figure 10] This flowchart shows the process by which a work information management system in one embodiment determines whether a work area is a single work area or multiple work areas. [Figure 11] This figure shows the distribution of the ratio of the working area to the moving area in one embodiment. [Modes for carrying out the invention]

[0013] (Embodiment) The work information management system 1000 according to the present embodiment of the present invention will be described with reference to the drawings. In the present embodiment, as shown in FIG. 1, the work information management system 1000 includes a work information management device 100 and a terminal 200. The work information management device 100 is communicably connected to a work device 30 and a terminal 200 via a network 20, for example, the Internet.

[0014] The work device 30, for example, performs work while moving in the farm field 500. The work device 30 may include, for example, a tractor that pulls a work machine. Also, the work device 30 may include a combine or the like formed integrally with the work machine. The work device 30 may include a drone that flies to perform agricultural work, for example, pesticide spraying.

[0015] For example, as shown in FIG. 2, one or more work devices 30 perform work while moving along a movement path 600 in the farm field 500. For example, the first work device 30-1 performs work while moving along the first movement path 600-1. Also, the second work device 30-2 performs work while moving along the second movement path 600-2 so as to work on an area adjacent to the area where the first work device 30-1 has performed work.

[0016] The work device 30 has a positioning device that measures the position of its own vehicle at each moment, for example, latitude and longitude. The positioning device may include, for example, a receiver of GNSS (Global Navigation Satellite System), a quantum compass, etc., and measures a positioning position 610 representing the position of its own vehicle at a predetermined interval (for example, an interval of 1 second). For example, the first work device 30-1 measures a first positioning position 610-1 representing the position of its own vehicle and outputs position information representing the measured position to the work information management device 100. Also, the second work device 30-2 may measure a second positioning position 610-2 representing the position of its own vehicle.

[0017] The work information management device 100 determines the area where the first work device 30-1 has performed work based on the position information acquired from the first work device 30-1. For example, as shown in FIG. 3, the work information management device 100 determines the area including the first positioning position 610-1 as the work area 620 where the first work device 30-1 has performed work. Here, in the farmland 500, since work is being performed by a plurality of work devices 30, the work area 620 also includes the area where a work device 30 other than the first work device 30-1 (for example, the second work device 30-2) has performed work. Therefore, the area where work has been performed by the first work device 30-1 is smaller than the area of the work area 620.

[0018] Also, as shown in FIG. 4, the work information management device 100 determines the movement trajectory 630 of the first work device 30-1 based on the position information of the first work device 30-1, and determines the distance of the determined movement trajectory 630. The work information management device 100 may determine the area where the first work device 30-1 has performed work by multiplying the distance of the movement trajectory 630 by the work width 31 shown in FIG. 5. However, since the work device 30 may move or reverse without performing work within the farmland 500, the area increases according to the distance moved without performing work. The work width 31 represents the distance of the area where work is performed by the work device 30 in a direction orthogonal to the traveling direction of the work device 30. For example, when the work device 30 is a tiller, the work width 31 represents the length in the direction orthogonal to the traveling direction of the work device 30 among the areas where tilling is performed when the work device 30 is moving in the traveling direction. The work width 31 may represent the length of the machine that performs tilling in a direction orthogonal to the traveling direction of the work device 30.

[0019] Therefore, when the work area 620 is a single work area, the work information management device 100 determines the area where work has been performed by the work device 30 based on the area of the work area 620. On the other hand, when the work area 620 is a multiple work area, the work information management device 100 determines the area where work has been performed by the work device 30 based on the area calculated from the movement trajectory 630. Thereby, the area where work has been performed is determined with high accuracy.

[0020] Furthermore, as shown in Figure 6, the terminal 200 displays an image that distinguishes between multiple work areas 621 and single work areas 622. For example, the terminal 200 displays an image on a map that distinguishes between the portion representing multiple work areas 621 and the portion representing single work areas 622. This allows users, such as the manager or workers of the field 500, to easily confirm whether each work area 620 is being worked on by one work device 30 or by multiple work devices 30.

[0021] Furthermore, the terminal 200 may display area information 700, which represents the area of ​​the area where work was performed by the first work device 30-1, in association with the multiple work areas 621. In addition, the area information 700 may represent the area of ​​the area where work was performed by work devices 30 other than the first work device 30-1. This allows the user to understand the area where work was actually performed by the first work device 30-1.

[0022] (Configuration of the work information management system) The configuration of the work information management device 100 included in the work information management system 1000 shown in Figure 1 will be described. As shown in Figure 7, the work information management device 100 comprises an input / output device 110, an arithmetic unit 120, a communication device 130, and a storage device 140. The work information management device 100 is a computer, for example, a cloud server. Information for the arithmetic unit 120 to perform processing is input to the input / output device 110. The input / output device 110 also outputs the results of the processing performed by the arithmetic unit 120. The input / output device 110 may include various input and output devices, such as a keyboard, mouse, microphone, display, speaker, touch panel, etc. The input / output device 110 may be omitted.

[0023] The communication device 130 is connected to the network 20 and communicates with each device via the network 20. For example, the communication device 130 transfers information acquired from the work device 30 to the arithmetic unit 120. The communication device 130 also transfers signals generated by the arithmetic unit 120 to the terminal 200. The communication device 130 may include various interfaces such as a NIC (Network Interface Card) and a USB terminal.

[0024] The storage device 140 stores various data, such as a work information management program 400, for determining whether the work area 620 where work was performed by the work device 30 is a multiple work area 621 or a single work area 622. The storage device 140 is used as a non-transitory tangible storage medium for storing the work information management program 400. The work information management program 400 may be provided as a computer program product recorded on a computer-readable storage medium 1, or as a computer program product downloadable from a server.

[0025] The arithmetic unit 120 reads and executes the work information management program 400 from the storage device 140 and performs various data processing to determine whether the work area 620 is a multiple work area 621 or a single work area 622. For example, the arithmetic unit 120 may include a central processing unit (CPU).

[0026] The arithmetic unit 120 reads and executes the work information management program 400, and in cooperation with the storage device 140, realizes the shape determination unit 150, the movement area determination unit 160, the area determination unit 170, the work area determination unit 180, and the output unit 190, as shown in Figure 8. The shape determination unit 150 determines the shape of the work area 620 where work was performed by the work device 30, based on the position information of the work device 30. The shape determination unit 150 also determines the area of ​​the work area 620 based on the shape of the work area 620. The movement area determination unit 160 determines the movement area, which represents the area of ​​the region moved by the work device 30 during work, based on the movement trajectory 630 of the work device 30. The area determination unit 170 determines, based on the area of ​​the work area 620 and the movement area, whether the work area 620 is a single work area 622 where work was performed by one work device 30, or a multiple work area 621 where work was performed by multiple work devices 30. The work area determination unit 180 determines the work area, which represents the area of ​​the area where work was performed by the work device 30, depending on whether the work area 620 is a single work area 622 or multiple work areas 621. The output unit 190 outputs display information to the terminal 200 that distinguishes between a single work area 622 and multiple work areas 621.

[0027] Next, the configuration of the terminal 200 shown in Figure 1 will be described. As shown in Figure 9, the terminal 200 comprises an input / output device 210, an arithmetic unit 220, a communication device 230, and a storage device 240. The terminal 200 may include, for example, a computer, a tablet, or a mobile phone. The input / output device 210 receives information for the arithmetic unit 220 to perform processing. The input / output device 210 also outputs the results of the processing performed by the arithmetic unit 220. The input / output device 210 may include various input and output devices, such as a keyboard, mouse, microphone, display, speaker, and touch panel.

[0028] The communication device 230 is connected to the network 20 and communicates with each device via the network 20. For example, the communication device 230 transfers display information acquired from the work information management device 100 to the arithmetic unit 220. The communication device 230 also transfers signals generated by the arithmetic unit 220 to the work information management device 100. The communication device 230 may include various interfaces such as transceivers used for wireless communication such as wireless LAN (Local Area Network) or cellular network, NIC (Network Interface Card), and USB terminals.

[0029] The storage device 240 stores various data for displaying display information acquired from the work information management device 100, such as a display program 410. The storage device 240 is used as a non-transitory tangible storage medium for storing the display program 410. The display program 410 may be provided as a computer program product recorded on a computer-readable storage medium 2, or as a computer program product downloadable from a server.

[0030] The arithmetic unit 220 reads and executes the display program 410 from the storage device 240 and performs various data processing to display the display information. For example, the arithmetic unit 220 may include a central processing unit (CPU).

[0031] The arithmetic unit 220 reads and executes the display program 410, and in cooperation with the storage device 240 and the input / output device 210, as shown in Figure 8, realizes the display unit 250. The display unit 250 displays the display information acquired from the work information management device 100.

[0032] (Operation of the work information management system) The operation of the work information management system 1000 will be explained. For example, when the work device 30 performs work in the field 500, it measures its own position at each time and outputs position information representing the measured position and time to the work information management system 100. When the work device 30 stops, it outputs all the position information acquired from the time it started until it stopped. Alternatively, the work device 30 may output position information sequentially.

[0033] When the arithmetic unit 120 of the work information management device 100 receives location information from the work device 30, it reads and executes the work information management program 400 from the storage device 140. Once the work information management program 400 is executed, the arithmetic unit 120 starts the work information management method shown in Figure 10. Hereafter, the work device 30 that is the source of the location information acquired by the work information management device 100 may be referred to as the target work device.

[0034] In step S110, the shape determination unit 150, implemented by the arithmetic unit 120, determines the shape of the work area 620, which represents the area where work was performed by the work device 30, based on the position information of the work device 30. For example, the shape determination unit 150 extracts the position information of the work device 30 when it is performing work from the position information of the work device 30 using any method. For example, the shape determination unit 150 extracts the position information of the work device 30 when its speed falls within the speed range when it is performing work. In this case, the speed of the work device 30 corresponding to the position information represents the speed of the work device 30 at the positioning position 610 represented in that position information. Here, the speed of the work device 30 at each positioning position 610 may be determined based on the distance between that positioning position 610 and other adjacent positioning positions 610 whose measured times are the same, and the interval between the measured times of both positioning positions 610. Furthermore, the shape determination unit 150 may extract position information representing the positioning location 610 within the field 500 as position information when the work device 30 is performing its work.

[0035] The shape determination unit 150 determines the work area 620 based on the extracted position information. For example, the shape determination unit 150 determines the area encompassing all positioning positions 610 represented in the extracted position information as the work area 620. The shape determination unit 150 may determine the area encompassing all positioning positions 610 represented in the position information in any way. For example, the shape determination unit 150 determines the convex hull for all corresponding positioning positions 610 as the work area 620. Here, the convex hull includes all corresponding positioning positions 610 and represents the smallest convex polygon. Alternatively, the shape determination unit 150 may determine the concave hull for multiple positioning positions 610 as the work area 620. For example, the concave hull may be formed by any algorithm, and may represent, for example, the alpha shape for multiple positioning positions 610.

[0036] Furthermore, the shape determination unit 150 may determine the working area 620 as an enlarged region of the convex or concave hull, depending on the working width 31 of the working device 30. For example, the shape determination unit 150 may determine the working area 620 as an enlarged region of half the length of the working width 31, based on the contour of the convex or concave hull.

[0037] In step S120, the shape determination unit 150 determines the area of ​​the work area 620 based on the determined shape of the work area 620. The shape determination unit 150 calculates the area within the determined shape as the area of ​​the work area 620.

[0038] In step S130, the movement area determination unit 160 determines the movement area, which represents the area of ​​the region moved by the work device 30, based on the movement trajectory 630 of the work device 30. The movement area represents the area where work is performed by the work device 30 when it moves the distance of the movement trajectory 630 while performing work. For example, the movement area determination unit 160 determines the movement trajectory 630 of the work device 30 based on the position information of the work device 30. For example, the movement area determination unit 160 extracts the first measured time as the start time and the last measured time as the end time from the position information extracted by the shape determination unit 150. The movement area determination unit 160 determines the movement trajectory 630 based on the position information measured from the start time to the end time among all the position information. For example, the movement area determination unit 160 determines the movement trajectory 630 as a line connecting two adjacent positioning positions 610 with measured times in the order of the measured times in the position information measured from the start time to the end time. For example, the movement area determination unit 160 connects two adjacent positioning positions 610 whose measured times are in a straight line segment, and determines the movement trajectory 630 as the line connecting the positioning position 610 measured at the start time to the positioning position 610 measured at the end time.

[0039] The movement area determination unit 160 determines the movement area based on the determined movement trajectory 630 and the working width 31. For example, the movement area determination unit 160 calculates the distance of the movement trajectory 630 and determines the movement area by multiplying the calculated distance by the working width 31. The working width 31 can be determined by any method. For example, the working width 31 can be determined according to the type of work device 30. Alternatively, the working width 31 may be registered by the user in the work information management system 1000 using the terminal 200.

[0040] In step S140, the area determination unit 170 determines whether the work area 620 is a multiple work area 621 based on the area of ​​the work area 620 and the moving area. For example, the area determination unit 170 determines whether the work area 620 is a multiple work area 621 based on the ratio of the area of ​​the work area 620 to the moving area. For example, the area determination unit 170 determines whether the work area 620 is a multiple work area 621 by comparing the ratio of the area of ​​the work area 620 to the moving area with a threshold.

[0041] When working with one unit in the work area 620, the work device 30 moves to pass through the entire area of ​​the work area 620, as it works within the entire area of ​​the work area 620. On the other hand, when working with multiple units, the work device 30 works only in a portion of the work area 620, so there are parts of the work area 620 that the work device 30 does not pass through.

[0042] Therefore, when the ratio of the area of ​​the work area 620 to the moving area is greater than or equal to a threshold, the area determination unit 170 determines that the work area 620 is one of several work areas 621. On the other hand, when the ratio of the area of ​​the work area 620 to the moving area is less than a threshold, the area determination unit 170 determines that the work area 620 is one of several work areas 622. When it is determined that the work area 620 is one of several work areas 621 (YES), the process proceeds to step S160. When the work area 620 is one of several work areas 622 (NO), the process proceeds to step S150. The threshold will be described later.

[0043] In step S150, the work area determination unit 180 determines the area of ​​the work region 620 as the work area where work was performed by the work device 30. Once the work area is determined, the process proceeds to step S170.

[0044] When it is determined that the work area 620 is multiple work areas 621, in step S160, the work area determination unit 180 determines the work area where work was performed by the work device 30 based on the movement area. For example, the work area determination unit 180 determines the work area as the value obtained by multiplying the movement area by a coefficient. The coefficient will be described later.

[0045] Furthermore, the work area determination unit 180 may determine the area in the work area 620 where work was performed by the work devices 30, excluding the target work device which is the source of the location information, based on the area of ​​the work area 620 and the work area. For example, the work area determination unit 180 may determine the area where work was performed by the work devices 30 other than the target work device as the value obtained by subtracting the work area from the area of ​​the work area 620.

[0046] In step S170, the output unit 190 outputs display information to the terminal 200 that distinguishes between the single work area 622 and the multiple work areas 621. For example, as shown in Figure 6, the display information represents an image on a map that distinguishes between the single work area 622 and the multiple work areas 621. The display information may also include area information 700 that represents the area of ​​the region where work was performed by the target work device. Furthermore, the area information 700 included in the display information may further represent the area where work was performed by work devices 30 other than the target work device.

[0047] In step S180 shown in Figure 10, the display unit 250 of the terminal 200 displays display information acquired from the work information management device 100. For example, as shown in Figure 6, the display unit 250 displays an image on a map showing the range of a single work area 622 and the range of multiple work areas 621. For example, in the displayed image, the range of a single work area 622 is represented by a different display format (e.g., outline color, color within the range, pattern, etc.) than the range of multiple work areas 621.

[0048] Furthermore, the display unit 250 may display area information 700 representing the area where work was performed by the target work device in the multiple work areas 621, in association with the corresponding multiple work areas 621. For example, the display unit 250 displays first area information 700-1 associated with the corresponding multiple work area 621. Also, when a multiple work area 621 is selected, the display unit 250 may display first area information 700-1 corresponding to the selected multiple work area 621. For example, the first area information 700-1 represents the area where work was performed by the target work device in association with information that identifies the target work device (e.g., name, identification symbol, etc.). Furthermore, the first area information 700-1 may also include information representing the area where work was performed by work devices 30 other than the target work device in the multiple work areas 621. For example, the first area information 700-1 represents the area where work was performed by the target work device in association with information identifying the target work device, and represents the area where work was performed by work devices 30 other than the target work device in association with information representing devices other than the target work device.

[0049] Furthermore, the display unit 250 may display second area information 700-2, which represents the area in which work was performed by the target work device within the individual work area 622, in association with the corresponding individual work area 622.

[0050] This allows the user to easily confirm whether each work area 620 is a single work area 622 or multiple work areas 621. Furthermore, within multiple work areas 621, the user can easily confirm the area worked by the target work device and the area worked by other work devices.

[0051] Furthermore, the output unit 190 of the work information management device 100 may determine the work performance of the target work device, such as the work time per unit area and the amount of materials per unit area (e.g., harvest yield, amount of pesticides sprayed), using the area over which work was performed by the target work device. In this case, the work time, which represents the time the target work device performed the work, can be obtained by any method. For example, the work time may be determined based on the time when the position information of the work device 30 was measured, or it may be registered by the worker in the work information management system 1000 using the terminal 200. Similarly, the amount of materials can also be obtained by any method. For example, the amount of materials may be measured by the work device 30, or it may be registered by the worker in the work information management system 1000 using the terminal 200. The information representing the determined work performance is output as display information from the output unit 190 of the work information management device 100 to the terminal 200, and displayed on the input / output device 210 by the display unit 250 of the terminal 200. This allows the user to confirm more accurate work performance.

[0052] (Threshold used to determine the work area) A threshold used to determine whether a work area 620 is a multiple work area 621 will be described. This threshold is determined by the area determination unit 170 based on the distribution of the ratio of the area of ​​the multiple work areas 620 to each of the multiple moving areas in multiple operations performed in the past. For example, as shown in Figure 11, the area determination unit 170 determines the distribution of the ratio of the area of ​​the work area 620 to the moving area, such as a histogram or probability density function, in multiple operations performed in the past. Here, the multiple operations performed in the past may include operations performed by one work device 30 and operations performed by multiple work devices 30. Alternatively, the multiple operations performed in the past may include operations performed by one work device 30 but not operations performed by multiple work devices 30.

[0053] The region determination unit 170 determines a statistical value in the distribution of ratios as a threshold. For example, the region determination unit 170 determines the peak ratio 710, which represents the ratio when the frequency is maximum, as the threshold. Alternatively, the region determination unit 170 may determine the mean, median, or other values ​​in the distribution of ratios as thresholds.

[0054] Furthermore, the region determination unit 170 may determine a threshold value greater than or less than the peak ratio 710 in the distribution of ratios. For example, if, in past operations, the quantity of work performed by one work device 30 is greater than the quantity of work performed by multiple work devices 30, the region determination unit 170 may determine a threshold value greater than the peak ratio 710 in the distribution of ratios. For example, the region determination unit 170 may determine a threshold value that is in the top 30% when the ratios are arranged in descending order. Here, the percentage from the top when the ratios are arranged in descending order (e.g., 30%) may be a fixed value (e.g., an artificially determined fixed value). This percentage may also be determined by the ratio of the quantity of work performed by one work device 30 to the quantity of work performed by multiple work devices 30.

[0055] Furthermore, in past operations, if the quantity of work performed by one work device 30 is less than the quantity of work performed by multiple work devices 30, the area determination unit 170 may determine a threshold value smaller than the peak ratio 710 in the ratio distribution. For example, the area determination unit 170 may determine a threshold value that is in the 30% position from the top when the ratios are arranged in ascending order. Here, the percentage from the top when the ratios are arranged in ascending order (e.g., 30%) may be a fixed value (e.g., an artificially determined fixed value). Also, this percentage may be determined by the ratio of the quantity of work performed by one work device 30 to the quantity of work performed by multiple work devices 30.

[0056] Furthermore, the threshold may be determined independently of the distribution of the ratio between the area of ​​the work area 620 and the area moved in multiple operations performed in the past. For example, the threshold may be a predetermined fixed value (e.g., an artificially determined fixed value).

[0057] (A coefficient used to determine the work area in multiple work areas) This section describes the coefficient multiplied by the movement area when determining the work area where work was performed by the target work device in multiple work areas 621. Similar to the threshold, this coefficient is determined by the work area determination unit 180 based on the distribution of the ratio of the work area 620 to the movement area in multiple past operations. For example, as shown in Figure 11, the work area determination unit 180 determines the peak ratio 710, which represents the ratio when the frequency is maximum, as the coefficient. Alternatively, the work area determination unit 180 may determine the mean, median, etc., of the ratio distribution as the coefficient.

[0058] Furthermore, the work area determination unit 180 may determine a coefficient that is greater than or less than the peak ratio 710 in the ratio distribution, similar to the threshold. For example, if the quantity of work performed by one work device 30 in past operations is greater than the quantity of work performed by multiple work devices 30, the work area determination unit 180 may determine a coefficient that is greater than the peak ratio 710 in the ratio distribution. If the quantity of work performed by one work device 30 in past operations is less than the quantity of work performed by multiple work devices 30, the work area determination unit 180 may determine a coefficient that is less than the peak ratio 710 in the ratio distribution. A detailed explanation of the coefficient is the same as for the threshold and will therefore be omitted.

[0059] Furthermore, the coefficient, like the threshold, may be determined independently of the distribution of the ratio between the area of ​​the work area 620 and the area moved in multiple operations performed in the past. For example, the coefficient may be a predetermined fixed value (e.g., an artificially determined fixed value).

[0060] Furthermore, the coefficient may be calculated using the same method as the threshold, or it may be calculated using a different method.

[0061] (modified version) The embodiments and modifications described above are merely examples, and the configurations described in each embodiment and modification may be arbitrarily changed and / or combined as long as they do not impair the function. Furthermore, some of the functions described in the embodiments and modifications may be omitted if the necessary functions can be achieved.

[0062] For example, in step S130 shown in Figure 10, the movement area determination unit 160 of the work information management device 100 used position information when no work was being performed when determining the movement trajectory 630 of the work device 30, but it may also use only position information when work is being performed. In this case, the movement area determination unit 160 determines the movement trajectory 630 as a single line connecting the positioning positions 610 in the order they were measured, based on the position information extracted by the shape determination unit 150. For example, the movement area determination unit 160 determines the movement trajectory 630 as a line connecting two positioning positions 610 whose measured times are adjacent among the extracted position information, each with a straight line segment. As explained in the processing of step S130, the movement area determination unit 160 determines the movement area using the determined movement trajectory 630.

[0063] Furthermore, in step S140 shown in Figure 10, the area determination unit 170 may compare the ratio of the moving area to the area of ​​the work area 620 with a threshold to determine whether the work area 620 is a multiple work area 621. For example, the area determination unit 170 may determine that the work area 620 is a multiple work area 621 when the ratio of the moving area to the area of ​​the work area 620 is less than or equal to the threshold. In this case, the area determination unit 170 determines that the work area 620 is a single work area 622 when the ratio of the moving area to the area of ​​the work area 620 is greater than the threshold.

[0064] In this case, the threshold is determined by the area determination unit 170 based on the distribution of the ratio of the moving area to the area of ​​the work area 620 in multiple operations performed in the past. For example, the area determination unit 170 determines the distribution of the ratio of the moving area to the area of ​​the work area 620 in multiple operations performed in the past, such as a histogram or probability density function. For example, the area determination unit 170 determines a threshold value from the statistical values ​​in the determined ratio distribution, such as the ratio at which the frequency is maximum, the mean, or the median. Furthermore, in past operations, if the quantity of work performed by one work device 30 is greater than the quantity of work performed by multiple work devices 30, the area determination unit 170 may determine a threshold value smaller than the ratio at which the frequency is maximum. Also, in past operations, if the quantity of work performed by one work device 30 is less than the quantity of work performed by multiple work devices 30, the area determination unit 170 may determine a threshold value larger than the ratio at which the frequency is maximum.

[0065] In this case, the coefficient used to determine the work area in the multiple work areas 621 is determined based on the distribution of the ratio of the area of ​​the work area 620 to the area moved in multiple operations performed in the past.

[0066] Furthermore, the area determination unit 170 may determine whether the work area 620 is a multiple work area 621 by using the difference between the moving area and the area of ​​the work area 620. For example, the area determination unit 170 may calculate a first value by subtracting the area of ​​the work area 620 from the moving area, and then compare the ratio of this first value to the moving area with a threshold to determine whether the work area 620 is a multiple work area 621. For example, the area determination unit 170 determines that the work area 620 is a multiple work area 621 when the ratio is less than or equal to the threshold. Also, when the ratio is greater than the threshold, it determines that the work area 620 is a single work area 622.

[0067] In this case, the threshold is determined by the area determination unit 170 based on the distribution of ratios similarly calculated in multiple operations performed in the past. For example, the area determination unit 170 calculates a first value by subtracting the area of ​​the work area 620 from the area of ​​movement in each of the multiple operations performed in the past, and determines the value obtained by dividing the first value by the area of ​​movement as the ratio. The area determination unit 170 determines the threshold based on the determined distribution of ratios. The method of determining the threshold based on the distribution of ratios is the same as the method of determining the threshold according to the ratio of the area of ​​movement to the area of ​​the work area 620, so an explanation is omitted.

[0068] Alternatively, the area determination unit 170 may calculate a second value by subtracting the moving area from the area of ​​the work area 620, and compare the ratio of the second value to the moving area with a threshold value to determine whether the work area 620 is one of multiple work areas 621.

[0069] In this case as well, the coefficient used to determine the work area in the multiple work areas 621 is determined based on the distribution of the ratio of the work area 620 to the movement area in multiple operations performed in the past.

[0070] For example, the work information management device 100 may perform some or all of the processing of terminal 200. The terminal 200 may perform some or all of the processing of the work information management device 100. Terminal 200 may be incorporated into the work device 30. The work information management program 400 may include a display program 410.

[0071] The work information management system 1000 may not include terminal 200 and may display information on external terminals not included in the work information management system 1000.

[0072] For example, the display unit 250 of the terminal 200 may display an image that distinguishes between multiple work areas 621 and a single work area 622, and may not display area information 700 that represents the area of ​​the area where work has been performed by the work device 30. In this case, the processing in steps S150 and S160 shown in Figure 10 may be omitted. Also, the work area determination unit 180 of the work information management device 100 may be omitted.

[0073] Furthermore, the display unit 250 of the terminal 200 does not need to display the area where work was performed by work devices 30 other than the target work device as area information 700. In this case, in step S160 shown in Figure 10, the work area determination unit 180 of the work information management device 100 does not need to determine the area in the work area 620 where work was performed by work devices 30 excluding the target work device.

[0074] Furthermore, the work information management device 100 may acquire only the position information measured when the work device 30 is performing work. For example, the positioning device of the work device 30 may measure its own position only when the work device 30 is performing work. Alternatively, a device not included in the work information management system 1000 may extract the position information of the work device 30 when it is performing work from the position information of the work device 30, and the work information management device 100 may acquire the position information extracted from that device. In this case, in step S110 shown in Figure 10, the shape determination unit 150 of the work information management device 100 may omit the process of extracting the position information of the work device 30 when it is performing work from the position information of the work device 30.

[0075] Furthermore, the work information management device 100 may acquire information representing the movement trajectory 630 of the work device 30 during operation from a device not included in the work information management system 1000. In this case, in step S130 shown in Figure 10, the movement area determination unit 160 of the work information management device 100 may omit the process for determining the movement trajectory 630 of the work device 30.

[0076] (Note) The work information management method, work information management system, and work information management program described in each embodiment can be described as follows.

[0077] The work information management method relating to the first aspect is: Based on the position of the first working device at each time point, the shape of the work area where the work was performed by the first working device is determined, Based on the determined shape of the work area, the first area of ​​the work area is determined, Based on the movement trajectory of the first working device, the area of ​​movement of the region to which the first working device moved is determined, Based on the aforementioned first area and the aforementioned moving area, it is determined whether the work area is a single work area where work is performed by one work device, or multiple work areas where work is performed by multiple work devices. Includes.

[0078] The work information management method relating to the second embodiment is the work information management method relating to the first embodiment, Determining whether the work area is a single work area or multiple work areas is: The ratio of the first area to the moving area is compared with a threshold value to determine whether the work area is a single work area or multiple work areas. Includes.

[0079] The work information management method relating to the third aspect is a work information management method relating to the second aspect, Determining whether the work area is a single work area or multiple work areas is: When the ratio of the first area to the moving area is smaller than the threshold, it is determined that the work area is the single work area. Includes.

[0080] The work information management method relating to the fourth aspect is a work information management method relating to the second or third aspect, The threshold is determined based on the distribution of the ratio between a plurality of the first areas in past operations and a plurality of the moving areas corresponding to each of the plurality of the first areas. It also includes.

[0081] The work information management method relating to the fifth aspect is a work information management method relating to any one of the first to fourth aspects, When the work area is the multiple work area, the second area of ​​the area where the first work device performed work is determined based on the first area. It also includes.

[0082] The work information management method relating to the sixth aspect is the work information management method relating to the fifth aspect, Determining the second area means The second area is determined by multiplying the first area by a coefficient. Includes.

[0083] The work information management method relating to the seventh aspect is a work information management method relating to the sixth aspect, The coefficient is determined based on the distribution of the ratio between a plurality of the first areas in past operations and a plurality of the moving areas corresponding to each of the plurality of the first areas. It also includes.

[0084] The work information management method relating to the eighth aspect is a work information management method relating to any one of the fifth to seventh aspects, When the work area is the multiple work area, a third area is determined in the multiple work area where work is performed by the work equipment excluding the first work equipment, based on the first area and the second area. It also includes.

[0085] The work information management method relating to the ninth aspect is a work information management method relating to any one of the first to eighth aspects, Displaying information that distinguishes between the single work area and the multiple work areas. It also includes.

[0086] The work information management method relating to the 10th aspect is a work information management method relating to any one of the 5th to 8th aspects, Displaying information that distinguishes between the single work area and the multiple work areas, and information that represents the second area in the multiple work areas. It also includes.

[0087] The work information management method relating to the 11th aspect is a work information management method relating to the 8th aspect, Displaying information that distinguishes between the single work area and the multiple work areas, information that represents the second area in the multiple work areas, and information that represents the third area in the multiple work areas. It also includes.

[0088] The work information management system relating to the 12th aspect is: A shape determination unit determines the shape of the work area where work was performed by the first work device based on the position of the first work device at each time point, and determines the first area of ​​the work area based on the determined shape of the work area. A movement area determination unit that determines the movement area of ​​the region moved by the first work device based on the movement trajectory of the first work device, A region determination unit that determines, based on the first area and the moving area, whether the work area is a single work area where work is performed by one work device or multiple work areas where work is performed by multiple work devices, It is equipped with.

[0089] The work information management program relating to the 13th aspect is: Based on the position of the first working device at each time point, the shape of the work area where the work was performed by the first working device is determined, Based on the determined shape of the work area, the first area of ​​the work area is determined, Based on the movement trajectory of the first working device, the area of ​​movement of the region to which the first working device moved is determined, Based on the aforementioned first area and the aforementioned moving area, it is determined whether the work area is a single work area where work is performed by one work device, or multiple work areas where work is performed by multiple work devices. The arithmetic unit is made to execute it. [Explanation of Symbols]

[0090] 1, 2: Storage medium 20: Network 30: Work equipment 31: Working width 100: Work information management device 110: Input / Output Devices 120: Arithmetic device 130: Communication device 140: Storage device 150: Shape determination part 160: Movement Area Determination Unit 170: Area determination section 180: Working area determination unit 190: Output section 200: Terminal 210: Input / Output Devices 220: Arithmetic device 230: Communication equipment 240: Storage device 250:Display section 400: Work Information Management Program 410: Display Program 500: Field 600: Travel route 610: Positioning location 620 :Work area 621: Multiple workspaces 622: Single-unit work area 630: Movement trajectory 700: Area information 710: Peak ratio 1000: Work Information Management System

Claims

1. Based on the position of the first working device at each time point, the shape of the work area where the work was performed by the first working device is determined, Based on the determined shape of the work area, the first area of ​​the work area is determined, Based on the movement trajectory of the first work device, the area of ​​movement of the region to which the first work device moved is determined, Based on the aforementioned first area and the aforementioned moving area, it is determined whether the work area is a single work area where work is performed by one work device, or multiple work areas where work is performed by multiple work devices. A work information management method that includes this.

2. Determining whether the work area is a single work area or multiple work areas is: The ratio of the first area to the moving area is compared with a threshold value to determine whether the work area is a single work area or multiple work areas. A work information management method according to claim 1, including the following:

3. Determining whether the work area is a single work area or multiple work areas is: When the ratio of the first area to the moving area is smaller than the threshold, it is determined that the work area is the single work area. A work information management method according to claim 2, including the following:

4. The threshold is determined based on the distribution of the ratio between a plurality of the first areas in past operations and a plurality of the moving areas corresponding to each of the plurality of the first areas. The work information management method according to claim 2 or 3, further comprising:

5. When the work area is the multiple work area, the second area of ​​the area where the first work device has performed work is determined based on the first area. A work information management method according to any one of claims 1 to 3, further comprising:

6. Determining the second area means The second area is determined by multiplying the first area by a coefficient. A work information management method according to claim 5, including the following:

7. The coefficient is determined based on the distribution of the ratio between a plurality of the first areas in past operations and a plurality of the moving areas corresponding to each of the plurality of the first areas. The work information management method according to claim 6, further comprising:

8. When the work area is the multiple work area, a third area is determined in the multiple work area where work is performed by the work equipment excluding the first work equipment, based on the first area and the second area. The work information management method according to claim 5, further comprising:

9. Displaying information that distinguishes between the single work area and the multiple work areas. A work information management method according to any one of claims 1 to 3, further comprising:

10. Displaying information that distinguishes between the single work area and the multiple work areas, and information that represents the second area in the multiple work areas. The work information management method according to claim 5, further comprising:

11. Displaying information that distinguishes between the single work area and the multiple work areas, information that represents the second area in the multiple work areas, and information that represents the third area in the multiple work areas. The work information management method according to claim 8, further comprising:

12. A shape determination unit determines the shape of the work area where work was performed by the first work device based on the position of the first work device at each time point, and determines the first area of ​​the work area based on the determined shape of the work area. A movement area determination unit that determines the movement area of ​​the region moved by the first work device based on the movement trajectory of the first work device, A region determination unit determines, based on the first area and the moving area, whether the work area is a single work area where work was performed by one work device or multiple work areas where work was performed by multiple work devices. A work information management system equipped with this system.

13. Based on the position of the first working device at each time point, the shape of the work area where the work was performed by the first working device is determined, Based on the determined shape of the work area, the first area of ​​the work area is determined, Based on the movement trajectory of the first work device, the area of ​​movement of the region to which the first work device moved is determined, Based on the aforementioned first area and the aforementioned moving area, it is determined whether the work area is a single work area where work is performed by one work device, or multiple work areas where work is performed by multiple work devices. A work information management program that instructs the computing unit to execute tasks.

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