JP7194480B2 - Work information management device - Google Patents

Description

The present invention relates to a work information management device.

In Patent Document 1 below, the position information of the harvesting machine during the harvesting period from the start time to the end time of the harvesting work is plotted on a map, and the positional information is plotted on the map using a method such as a convex hull. A technique is disclosed for identifying a work area for harvesting work.

JP 2019-41613 A

In the technique disclosed in Patent Literature 1, when the harvesting work is performed in a plurality of times, the harvesting work is restarted from the position where the previous harvesting work ended. Then, a work area is specified with a unit from the start to the end of the harvesting work.
When the harvesting work is performed in multiple stages, it is assumed that the harvester will pass through an already harvested area when heading to the restart position. In such a case, the already-harvested area traveled to the restart position is included in the work area for the current harvesting work. As a result, the yield per unit area may be underestimated, and there is a risk that the work results cannot be accurately grasped.

SUMMARY OF THE INVENTION Accordingly, one object of the present invention is to provide a work information management device capable of accurately grasping the area of a work area in which farm work is actually performed.

One embodiment of the present invention provides a work information management device that stores and manages information including work type, work area, and work time for agricultural work as work information in a work information storage unit.
The work information management device includes a processing target information acquisition unit that acquires processing target information including a work type, a travel area, and a work time for agricultural work performed by a work vehicle, and A first condition that includes a work type, a work area having an overlapping area that overlaps the travel area in the processing target information, and a work time within a predetermined first period retroactively from the work time in the processing target information. a first determination unit that determines whether or not work information satisfying the first condition is stored in the work information storage unit; If the unit determines that an area obtained by removing the overlapping area from the travel area in the processing target information is specified as a work area, and the work information that satisfies the first condition is not stored in the work information storage unit and a work area identification unit that identifies the travel area in the processing target information as a work area when the first determination unit determines that

According to this device, when the work information satisfying the first condition is stored in the work information storage unit, the area obtained by removing the overlapping area from the running area of the processing target information is specified as the work area. Therefore, when the work vehicle passes through an area where agricultural work has already been performed without performing agricultural work, only the area where agricultural work was actually performed is identified as the work area. Therefore, it is possible to accurately grasp the area of the area where farm work was actually performed.

In one embodiment of the present invention, the first condition includes that the work type is harvesting work or planting work.
Agricultural work other than harvesting work and planting work (tillage work, agricultural chemical spraying work, fertilization work, etc.) may be performed redundantly on the same region within the first period (for example, one month). Therefore, for example, even in an area where tillage work has already been performed, work vehicles often pass through the area while performing tillage work. Therefore, if the work type is agricultural work other than harvesting work and planting work, even if there is an overlapping area in the travel area in the processing target information, there is a possibility that it is not necessary to remove the overlapping area. is high.

On the other hand, the harvesting work and the planting work are rarely performed multiple times within the first period for the same region. Therefore, if the farm work is harvest work or planting work, there is a high possibility that the work vehicle passes through the overlapped area without performing farm work and actually does not perform harvest work or planting work.
Therefore, if the first condition includes that the work type is harvesting work or planting work, the work area can be appropriately specified according to the work type. As a result, regardless of the type of work, the area where farm work was actually performed can be accurately grasped.

In one embodiment of the present invention, the work information management device includes a work type that is the same as the work type included in the processing target information, a work area that is adjacent to the work area identified by the work area identification unit, or the work area. Work that satisfies a second condition of including a work area that at least partially overlaps with the work area identified by the identification unit and a work time within a predetermined second period retroactively from the work time included in the processing target information. a second determination unit that determines whether information is stored in the work information storage unit; and the second determination unit that determines that the work information that satisfies the second condition is stored in the work information storage unit. If so, it further includes a work area combining unit that combines the work area identified by the work area identifying unit and the work area in the work information that satisfies the second condition.

There are cases where it is desired to manage the work areas before and after the interruption of agricultural work as a single work area, or when a plurality of work vehicles are used to divide the work into multiple work areas and the work is performed as a single work area.
Therefore, when the work information that satisfies the second condition is stored in the work information storage unit, the work area specified by the work area specifying unit and the work area in the work information that satisfies the second condition are combined. , the work area specified by the work area specifying unit and the work area stored in the work information storage unit can be managed as a single work area.

FIG. 1 is a schematic diagram showing the configuration of a work information management system to which a work information management device according to the first embodiment of the invention is applied. FIG. 2 is a block diagram showing an electrical configuration of a work vehicle provided in the work information management system. FIG. 3 is a block diagram showing the electrical configuration of the work information management device. FIG. 4 shows an example of contents of a work information management table stored in the work information management device. FIG. 5 is an example of a flow chart for explaining work area specifying processing and work area combining processing by the work information management device. FIG. 6 is a schematic diagram for explaining a state in which the travel area in the processing target information and the work area in the work information stored in the work information storage unit overlap. FIG. 7A is a schematic diagram for explaining a state in which the work area specified by the work area specifying unit and the work area in the work information stored in the work information storage unit are adjacent to each other. FIG. 7B is a schematic diagram for explaining a state in which the work area specified by the work area specifying unit and the work area in the work information stored in the work information storage unit are adjacent to each other. FIG. 7C is a schematic diagram for explaining a state in which at least a part of the work area specified by the work area specifying unit and the work area in the work information stored in the work information storage unit overlap; . FIG. 8 is a flow chart when only work area identification processing is performed by the work information management device. FIG. 9 is a block diagram showing the electrical configuration of the work information management device according to the second embodiment. FIG. 10 is an example of a flowchart for explaining work area combining processing by the work information management device according to the second embodiment.

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
<First Embodiment>
FIG. 1 is a schematic diagram showing the configuration of a work information management system 1 according to the first embodiment of the present invention. Referring to FIG. 1, a work information management system 1 is a system that manages information (work information) related to farm work performed by work vehicles in fields.

The work information management system 1 includes a work vehicle 2 capable of executing farm work while traveling in a field, and a management server 4 that manages work information on the farm work performed by the work vehicle 2 in the field. The management server 4 is an example of a work information management device.
The work vehicle 2 can wirelessly communicate with the management server 4 via the communication network 6 . The management server 4 is arranged in a management center 5 of a management company that manages the management server 4 . The management server 4 is operated by an operator within the management center 5 .

In this specification, the work vehicle 2 includes a work vehicle including a travel machine and a work machine towed by the travel machine, and a work vehicle in which the travel machine and the work machine are integrated.
Examples of working vehicles in which a traveling machine and a working machine are integrated include a rice transplanter, a combine harvester, and the like. Examples of combine harvesters include ordinary combine harvesters and self-threshing combine harvesters.

The traveling machine in the configuration in which the traveling machine pulls the working machine is, for example, a tractor. Examples of working machines towed by tractors include fertilizer spreaders (fertilizers), chemical spreaders, roll balers, cultivators, plows, levelers, mowers, seeders, and harvesters.
The work vehicle 2 has a function of measuring the position of the work vehicle 2 using a positioning satellite 8 . The work vehicle 2 transmits to the management server 4 work vehicle side information including the work vehicle ID, position information for each time, and operation information for each time. The work vehicle ID is information for identifying the work vehicle 2 .

When the work vehicle 2 is a combine harvester or a rice transplanter, the work vehicle ID is composed of the model and machine number of the work vehicle 2 . When the work vehicle 2 includes a tractor and a work machine, only the work machine ID may be transmitted to the management server 4 as the work vehicle ID, or both the work machine ID and the work machine ID may be transmitted to the management server 4. good too.
FIG. 2 is a block diagram showing the electrical configuration of the work vehicle 2. As shown in FIG. Referring to FIG. 2, work vehicle 2 includes a control section (hereinafter, "work vehicle control section 40"). The work vehicle control unit 40 includes a microcomputer having a CPU and a memory 41 (volatile memory, non-volatile memory, etc.). The work vehicle control unit 40 controls the operations of the work vehicle 2 (movements such as forward movement, backward movement, stopping, and turning).

The work vehicle control unit 40 includes a plurality of controllers (controller group 42), a plurality of sensors (sensor group 43), a position information calculation unit 44, a wireless communication unit 45, a display unit 46, an operation unit 47, and a storage unit 48. electrically connected.
A plurality of controllers control each part of the work vehicle 2 . When the work vehicle 2 is a combine harvester, the plurality of controllers include an engine controller that controls the number of revolutions of the engine, an elevation controller that controls the elevation of a cutting blade for cutting crops, and a pair of controllers provided in the work vehicle 2. A travel controller or the like that controls travel of the work vehicle 2 by individually driving the crawlers is included.

When the work vehicle 2 is a rice transplanter, the plurality of controllers include an engine controller, a vehicle speed controller that controls the vehicle speed of the work vehicle 2, a steering controller that controls the steering angle of the front wheels of the work vehicle 2, and rotation of the PTO shaft. and a PTO axis controller for controlling the . Even when the traveling machine of the work vehicle 2 is a tractor, the plurality of controllers includes an engine controller, a vehicle speed controller, a steering controller, a PTO shaft controller, and the like.

The multiple sensors include an angular velocity sensor for identifying the attitude of the work vehicle 2 and an acceleration sensor for identifying the acceleration of the work vehicle 2 . When work vehicle 2 is a combine harvester, the plurality of sensors further includes a harvest sensor that outputs a signal for calculating the yield of crops harvested by work vehicle 2 . Harvest sensors are, for example, strain gauges, piezoelectric elements, or the like.
A satellite signal reception antenna 49 is electrically connected to the position information calculation unit 44 . The satellite signal receiving antenna 49 receives signals from the positioning satellites 8 (see FIG. 1) that constitute the satellite positioning system. The satellite positioning system is, for example, GNSS (Global Navigation Satellite System). The position information calculator 44 calculates the position of the work vehicle 2 (strictly speaking, the satellite signal reception antenna 49) based on the positioning signal received by the satellite signal reception antenna 49. FIG. Specifically, the position information calculator 44 generates positioning information including time information and position information. The position information consists of, for example, latitude information and longitude information.

The wireless communication unit 45 is a communication interface for the work vehicle control unit 40 to communicate with the management server 4 via the communication network 6 . The display unit 46 is composed of, for example, a liquid crystal display. The operation unit 47 is provided with a plurality of levers, switches, and the like.
The storage unit 48 is composed of a storage device such as a nonvolatile memory. The storage unit 48 is provided with a position information storage unit 51, an operation information storage unit 52, and the like.

The work vehicle control unit 40 includes an information acquisition processing unit 50 . The information acquisition processing unit 50 acquires position information calculated by the position information calculation unit 44 at predetermined time intervals, and stores the position information in the position information storage unit 51 . The information acquisition processing unit 50 also acquires operation information provided from the work vehicle control unit 40 at predetermined time intervals and stores the operation information in the operation information storage unit 52 .
The operating information includes vehicle speed, engine ON/OFF information (hereinafter referred to as "engine ON/OFF information"), engine speed, engine load factor, and the like. The engine load factor is, for example, the ratio of the deviation between the actual fuel injection quantity and the no-load fuel injection quantity to the deviation between the maximum fuel injection quantity and the no-load fuel injection quantity.

When the work vehicle 2 is a combine harvester, the operation information further includes harvest amount information obtained from the harvest sensor. When the work vehicle 2 is a rice transplanter, the operation information includes ON/OFF information of the PTO clutch (hereinafter referred to as "clutch ON/OFF information") and the rotation speed of the PTO clutch (hereinafter referred to as "PTO shaft rotation speed"). ), etc. are further included. Similarly, when the traveling machine of the work vehicle 2 is a tractor, the operation information further includes clutch on/off information, PTO shaft rotation speed, and the like.

Then, the information acquisition processing unit 50 stores the time-based position information stored in the position information storage unit 51 and the time-based operation information stored in the operation information storage unit 52 together with the work vehicle ID at a predetermined timing (for example, , the timing at which the power key is turned off).
FIG. 3 is a block diagram showing the electrical configuration of the management server 4. As shown in FIG. Referring to FIG. 3 , management server 4 includes a control unit (hereinafter referred to as “server control unit 60”) that controls management server 4 . The server control unit 60 includes a microcomputer having a CPU and memory (volatile memory, non-volatile memory, etc.) 61 . A wireless communication unit 62 , an operation display unit 63 , an operation unit 64 and a storage unit 65 are electrically connected to the server control unit 60 .

The wireless communication unit 62 is a communication interface for the server control unit 60 to communicate with the work vehicle control unit 40 via the communication network 6 . The operation display unit 63 is composed of, for example, a touch panel display. Operation unit 64 includes, for example, a keyboard, a mouse, and the like. The storage unit 65 is composed of a storage device such as a hard disk or nonvolatile memory.
The storage unit 65 is provided with a time-series information storage unit 66, a work information management table 67, a processing condition storage unit 68, and the like.

In the time-series information storage unit 66, the work vehicle side information received by the server control unit 60 is associated with the work vehicle ID and stored as a set of time-series information (hereinafter simply referred to as "time-series information"). is stored as The time-series information includes work vehicle side information from when the power key is turned on until it is turned off.
The work information management table 67 stores work information about farm work performed in the past. The work information management table 67 is an example of a work information storage unit. FIG. 4 shows an example of the contents of the work information management table 67. As shown in FIG.

In the example of FIG. 4, the work information includes work area ID, work period (work time), work distance, work area position information (hereinafter referred to as "work area position information"), work area area (hereinafter referred to as "work area position information"). , “work area area”), work type, work record, etc. Work information is calculated based on time-series information. The work area position information includes position information necessary to specify the shape and position of the work area on the map.

The work record is information representing the results of farm work. For example, if the work vehicle 2 is a combine harvester, the work performance is the total harvest amount (total harvest amount) in the work area. Further, when the work vehicle 2 is a rice transplanter, the work performance is the total amount of seedlings planted in the work area (total planting amount). Further, when the travel machine of the work vehicle 2 is a tractor and the work machine is a fertilizer applicator, the work performance is the total amount of fertilizer spread in the work area (total amount of fertilizer applied).

The processing condition storage unit 68 stores processing conditions (first condition, second condition) used in work area specifying processing and work area combining processing (see FIG. 5), which will be described later.
The server control unit 60 stores the received time-series information in the memory 61 . The server control unit 60 includes a travel area identification unit 70 that identifies an area (travel area) in which the work vehicle 2 travels based on the position information of the work vehicle 2 included in the received time series information, and and a work type identification unit 71 that identifies the work type of agricultural work based on the above.

The travel area identification unit 70 identifies the travel area based on the position information of the work vehicle 2 included in the processing target information. The travel area identification unit 70 generates polygons, for example, based on time-based position information of the work vehicle 2 . A polygon is, for example, a convex hull. A convex hull is the smallest convex polygon that contains all given points. The travel area polygon is the smallest convex polygon that includes all the positional information of the work vehicle 2 included in the time-series information.

For example, the work type identification unit 71 identifies the model of the work vehicle 2 based on the work vehicle ID, and identifies the work type based on the model of the work vehicle 2 .
When the traveling machine of the work vehicle 2 is a tractor and only the traveling machine ID is transmitted to the management server 4 as the work vehicle ID, the work type identification unit 71 can identify the work type from only the work vehicle ID. can't In such a case, the work type identification unit 71 may identify the work type based on information other than the work vehicle ID included in the time-series information.

Specifically, the work type identification unit 71 divides the work period into a plurality of unit periods, estimates the work type of agricultural work performed in each unit period, and determines the unit period (for example, , 5 minutes) may be specified as the work type of the work period. In this case, the work type identifying unit 71 may use a machine learning method (machine learning model) to estimate the work type for each unit period. Machine learning techniques include, for example, support vector machines, random forests, neural networks, logistic regression, topological data analysis, and the like.

Information included in the time series information is input to the machine learning model as input information. The information input to the machine learning model includes the tractor movement trajectory pattern in a unit period, the tractor vehicle speed in a unit period, the engine speed in a unit period, the PTO shaft speed in a unit period, the engine load factor in a unit period, etc. is mentioned.
The travel area identified by the travel area identification unit 70 and the work type identified by the work type identification unit 71 are stored in the memory 61 together with time-series information.

The server control unit 60 uses the time-series information, travel area, and work type stored in the memory 61 as information to be processed, and executes the work area specifying process and the work area combining process. The server control unit 60 is an example of a processing target information acquisition unit. The server control unit 60 includes a first determination unit 72, a work area determination unit 73, a second determination unit 74, and a work area combination unit 75 in relation to the work area identification process and the work area combination process.

FIG. 5 is an example of a flowchart for explaining work area identification processing and work area combining processing.
Work area identification processing (steps S1 to S3) is performed by the first determination unit 72 and the work area identification unit 73, and work area combination processing (steps S4 and S5) is performed by the second determination unit 74 and the work area combination unit 75. be done.

Specifically, the first determination unit 72 determines whether work information satisfying the first condition exists in the work information management table 67 (step S1).
The first condition is work information that includes the same work type as the work type in the processing target information, and includes that the work type is harvesting work or planting work.
Furthermore, the first condition includes that the work information includes a work area having an overlapping area that overlaps with the travel area in the processing target information. FIG. 6 shows a state in which the travel area 100 in the processing target information overlaps with the work area 101 in the work information. A portion where the travel area 100 and the work area 101 overlap is an overlap area 102 .

Furthermore, the first condition includes that the work information includes work times within a predetermined first period retroactively from the work times in the processing target information. The first period is, for example, one month.
When the first determination unit 72 determines that work information satisfying the first condition exists in the work information management table 67 (step S1: YES), the work area identification unit 73 determines from the travel area 100 in the processing target information. The area from which the overlapping area 102 is removed is specified as the work area 103 (step S2).

When the first determination unit 72 determines that the work information satisfying the first condition does not exist in the work information management table 67 (step S1: NO), the work area identification unit 73 determines the travel area included in the processing target information. 100 is specified as the work area 104 (step S3).
Note that, unlike FIG. 6, when a plurality of pieces of work information satisfying the first condition exist in the work information management table 67, in step S3, the work area specifying unit 73 selects a plurality of duplicated travel areas from the processing target information. Identify the area from which the area was removed as the working area.

After step S2, the second determination unit 74 determines whether work information satisfying the second condition exists in the work information management table 67 (step S4).
Like the first condition, the second condition includes that the work information includes the same work type as the work type included in the processing target information. It does not include work or planting work.

Further, the second condition is that the work information includes a work area adjacent to the work area identified by the work area identifying unit 73, or that the work area identified by the work area identifying unit 73 and at least a part of It is included to be work information that includes overlapping work areas.
The fact that the work area of the work information existing in the work information management table 67 is close to the work area identified by the work area identification unit 73 means that a predetermined distance (for example, 5m), at least a part of the periphery of the work area of the work information existing in the work information management table 67 is positioned.

FIG. 7A shows a state in which the work area 103 specified by the work area specifying unit 73 and the work area 101 in the work information existing in the work information management table 67 are adjacent to each other. In step S3, when the work area identifying unit 73 identifies the work area 103 by removing the overlapping area 102 (see FIG. 6), the work area 103 overlaps the travel area 100 (see FIG. 6). The work area 101 that was previously located is adjacent to the work area 101 .

FIG. 7B shows a state in which the work area 104 specified by the work area specifying unit 73 and the work area 101 in the work information existing in the work information management table 67 are adjacent to each other. Even if the work area identification unit 73 identifies the travel area 100 as the work area 104 in step S3, the work area 104 and the work area 101 may be close to each other across a path such as a ridge.

FIG. 7C shows a state in which the work area 104 specified by the work area specifying unit 73 overlaps with part of the work area 101 in the work information existing in the work information management table 67 . Even if the work information including the work area 101 overlapping the travel area 100 exists in the work information management table 67, the work information including the work area 101 does not satisfy the first condition (for example, if the work type is fertilization work), the work area 104 will overlap with the work area 101 .

Furthermore, the second condition includes that the work information includes a work time within a predetermined second period retroactively from the work time included in the processing target information. The second period is, for example, one day and is shorter than the first period.
When the second determination unit 74 determines that the work information satisfying the second condition exists in the work information management table 67 (step S4: YES), the work area combining unit 75 determines that the work area identification unit 73 has identified the work information. The work area and the work area in the work information that satisfies the second condition are combined (step S5). If the work information satisfying the second condition exists in the work information management table 67, the work areas are combined regardless of the work type.

Specifically, in the work information management table 67, the work area linking unit 75 stores each item (work period, work distance, work area position information, work area area, and work area ID) corresponding to the work area ID of the work information that satisfies the second condition. information (work period, work distance, work area position information, work area area, and work record) on farm work performed in the work area identified by the work area identifying unit 73 is added to the work record). After step S5, the work area combining unit 75 ends the work area combining process.

Conversely, when the second determination unit 74 determines that the work information satisfying the second condition does not exist in the work information management table 67 (step S4: NO), the work area combining unit 75 causes the work area specifying unit 73 to The work area merging process ends without merging the work area specified by with other work areas.
Specifically, the work area combining unit 75 assigns a new work area ID to the work area specified by the work area specifying unit 73, and each item (work period, work distance, work area position information, work area area and work results) are added.

Note that unlike FIGS. 7A to 7C, when a plurality of pieces of work information satisfying the second condition exist in the work information management table 67, the work area combining unit 75 selects the work area specified by the work area specifying unit 73. , are combined with work areas in a plurality of work information that satisfy the second condition.
In the work area specifying process and the work area merging process shown in FIG. 5, when there is work information satisfying both the first condition and the second condition in the work information management table 67, the overlapping areas are removed and the work areas are merged. are both executed.

If the work information that satisfies the first condition exists in the work information management table 67 but the work information that satisfies the second condition does not exist in the work information management table 67, only the removal of overlapping areas is executed. For example, the work type is the same harvest work as the work type in the processing target information, there is an overlapping area, and the work time is within the first period before the work time in the processing target information but outside the second period exists in the work information management table 67, the overlapped area is removed but the work areas are not combined. However, this is limited to the case where the work information management table 67 does not have other work information that satisfies the first condition and the second condition.

If the work information management table 67 does not have work information that satisfies the first condition but the work information management table 67 does have work information that satisfies the second condition, only work area merging is executed. For example, the work type is the same fertilization work as the work type in the processing target information, the work area overlaps or is close to the travel area, and the work time is within the second period retroactively from the work time in the processing target information. If the work information exists in the work information management table 67, elimination of overlapping areas is not performed, but work area merging is performed. However, this is limited to the case where the work information management table 67 does not have other work information that satisfies the first condition and the second condition.

If work information that satisfies both the first condition and the second condition does not exist in the work information management table 67, neither the removal of overlapping areas nor the merging of work areas is executed.
According to the first embodiment, work area identification processing is executed. In the work area specifying process, when the first determination unit 72 determines that work information satisfying the first condition exists in the work information management table 67, an area obtained by removing the overlapping area 102 from the travel area 100 of the processing target information is specified as the work area 103 . Therefore, when the working vehicle 2 passes through an area in which agricultural work has already been performed without performing agricultural work, only the area in which agricultural work was actually performed is specified as the work area 103 . Therefore, it is possible to accurately grasp the area of the area where farm work was actually performed.

Further, in the first embodiment, the first condition includes that the work type is harvesting work or planting work.
Agricultural work other than harvesting work and planting work (tillage work, pesticide spraying work, fertilization work, etc.) may be performed multiple times on the same region within the first period (for example, one month). Therefore, for example, even in an area where agricultural work has already been performed, the working vehicle 2 often passes through the area while performing plowing work. Therefore, when the work type is agricultural work other than harvesting work and planting work, even if the overlapping area 102 exists in the travel area 100 in the processing target information, it is not necessary to remove the overlapping area 102. Probability is high.

On the other hand, the harvesting work and the planting work are rarely performed multiple times within the first period for the same region. Therefore, when the farm work is harvest work or planting work, work vehicle 2 passes through overlapping area 102 without farm work, and there is a high possibility that harvest work or planting work is not actually performed. .
Therefore, if the first condition includes that the work type is harvesting work or planting work, the work area 103 can be appropriately specified according to the work type. As a result, regardless of the type of work, the area where farm work was actually performed can be accurately grasped. Note that, unlike the first embodiment, there may be a configuration in which the first condition does not include that the work type is harvesting work or planting work. In that case, overlapping areas are removed regardless of the work type.

Further, according to the first embodiment, work area combination processing is executed. There are cases where it is desired to manage the work areas before and after the interruption of agricultural work as a single work area, or when the work is divided among a plurality of work vehicles 2 and the work is performed, a plurality of work areas may be desired to be managed as a single work area. .
In the first embodiment, when work information satisfying the second condition exists in the work information management table 67, the work area identified by the work area identifying unit 73 and the work within the work information satisfying the second condition. It is configured to connect the regions. Therefore, the work area specified by the work area specifying unit 73 and the work areas existing in the work information management table 67 can be managed as a single work area.

Unlike the first embodiment, the work area combining process may be omitted as shown in FIG. That is, after both steps S2 and S3, the work area identification unit 73 ends the work area identification process. Specifically, after both steps S2 and S3, the work area specifying unit 73 newly assigns a work area ID to the specified work area, and each item (work period , work distance, work area position, work area area and work results).

<Second embodiment>
FIG. 9 is a block diagram showing the electrical configuration of the management server 4 according to the second embodiment. In FIG. 9, the same reference numerals as those in FIG. 1 etc. are attached to the same configurations as those shown in FIGS.
The server control unit 60 of the management server 4 according to the second embodiment is not provided with the first determination unit 72 and the work area identification unit 73, and is provided with a determination unit 76 instead of the second determination unit 74. there is Therefore, the management server 4 according to the second embodiment executes only the work area combining process without executing the work area specifying process.

FIG. 10 is an example of a flowchart for explaining work area combination processing by the management server 4 according to the second embodiment.
The determination unit 76 determines whether or not the work information satisfying the combination condition exists in the work information management table 67 (step S11).
The join condition is stored in the processing condition storage unit 68. FIG. The connection condition includes that the work type is the same as the work type included in the processing target information. A binding condition does not include that the work type is a harvesting work or a planting work. Furthermore, the connection condition includes that the work information includes a work area adjacent to the travel area included in the processing target information or a work area at least partially overlapping with the travel area included in the processing target information (Fig. 7A-7C). Further, the connection condition includes that the work information includes a work time within a predetermined connection period going back from the work time included in the processing target information. The binding period is, for example, one day.

When the determination unit 76 determines that work information satisfying the combining condition exists in the work information management table 67 (step S11: YES), the work area combining unit 75 combines the travel area included in the processing target information with the combining condition. (step S12). If there is work information that satisfies the merging conditions in the work information management table 67, the work areas are merged regardless of the work type.

Specifically, in the work information management table 67, the work area combining unit 75 stores each item (work period, work distance, work area position information, work area area, and work area) corresponding to the work area ID of the work information that satisfies the conditions for merging. track record), information about the farm work performed in the travel area included in the processing target information (work period, work distance, work area position information, work area area, and work record) is added. After step S12, the work area combining unit 75 ends the work area combining process.

Conversely, when the determination unit 76 determines that there is no work information satisfying the combination condition in the work information management table 67 (step S11: NO), the work area combination unit 75 connects the travel area included in the processing target information. is not combined with other work areas, and the work area combination processing is terminated.
Specifically, the work area combining unit 75 newly attaches a work area ID to the travel area in the processing target information, and each item corresponding to the work area ID (work period, work distance, work area position information, Work area area and work performance) are added.

According to the second embodiment, when work information that satisfies the combining condition exists in the work information management table 67, the travel area within the process target information and the work area within the work information are combined with the combining condition. is configured to Therefore, the travel area in the processing target information and the work area existing in the work information management table 67 can be managed as a single work area.

The following features can be extracted from the description of the second embodiment.
A1. A work information management device that stores and manages information including work type, work area and work time for agricultural work as work information in a work information storage unit,
a processing target information acquisition unit that acquires processing target information including a work type, a travel area, and a work time for agricultural work performed by the work vehicle;
A work type that is the same as the work type in the process target information, a work area that is adjacent to the travel area in the process target information or a work area that at least partially overlaps with the travel area in the process target information, and the process target a judgment unit for judging whether or not work information that satisfies a combination condition that includes work times within a predetermined combination period going back from work times in the information is stored in the work information storage unit;
When the determination unit determines that the work information satisfying the combination condition is stored in the work information storage unit, the travel area within the processing target information and the work area within the work information satisfying the combination condition are determined by the determination unit. and a work area combining unit that combines the work information management device.

The present invention is not limited to the embodiments described above, but can be embodied in other forms.
For example, when the position information of the farm field is registered in advance in the management server 4, in the first embodiment, the second condition includes It may be added that the work information includes a work area located at . Similarly, in the second embodiment, it may be added that the work information includes a work area located in the same registered field as the travel area in the processing target information in the joint condition.

In addition, various modifications can be made within the scope of the claims.

2: work vehicle 4: management server (work information management device)
60: Server control unit (processing target information acquisition unit)
67: work information management table (work information storage unit)
72 : first determination unit 73 : work area specifying unit 74 : second determination unit 75 : work area combining unit 100 : travel area 101 : work area 102 in work information stored in the work information storage unit : overlap area 103 : Work area 104 identified by the work area identification unit : Work area identified by the work area identification unit

Claims (3)

A work information management device that stores and manages information including work type, work area and work time for agricultural work as work information in a work information storage unit,
a processing target information acquisition unit that acquires processing target information including a work type, a travel area, and a work time for agricultural work performed by the work vehicle;
A work type that is the same as the work type in the process target information, a work area that has an overlapping area that overlaps with the travel area in the process target information, and a predetermined first period retroactively from the work time in the process target information a first determination unit that determines whether work information that satisfies a first condition of including the work time of is stored in the work information storage unit;
When the first determination unit determines that the work information that satisfies the first condition is stored in the work information storage unit, the area obtained by removing the overlapping area from the travel area in the processing target information is used as the work area. If the first determination unit determines that the work information that satisfies the first condition is not stored in the work information storage unit, the travel area included in the processing target information is determined as the work area. A work information management device including a work area identifying unit for identifying. The work information management device according to claim 1, wherein the first condition includes that the work type is harvesting work or planting work. The same work type as the work type included in the processing target information and at least a part of the work area adjacent to the work area identified by the work area identification unit or the work area identified by the work area identification unit It is determined whether work information satisfying a second condition of including a work area and a work time within a predetermined second period retroactively from the work time included in the processing target information is stored in the work information storage unit. a second determination unit that determines;
When the second determination unit determines that work information satisfying the second condition is stored in the work information storage unit, the work area identified by the work area identification unit and the second condition are combined. 3. The work information management device according to claim 1, further comprising a work area merging section for merging work areas within work information to be filled.

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