Work management methods, work management systems, and work management programs

Abstract

The timing of the work can be estimated without using complex algorithms. [Solution] The work management method includes storing work plan data that associates a plan type representing the type of work performed in the field with a plan time representing the timing of the work performed in the field. The work management method also includes estimating a second work time, which represents the timing of the second work performed in the field, based on the first work period during which the first work of type 1 was performed in the field and the work plan data. Here, estimating the second work time includes estimating the second work time as the timing when the second work is performed, when the relative timing of the plan time associated with the second work in the work plan data is expressed as the relative timing of the second work being performed with respect to the first work period, with respect to the plan time associated with the first plan type representing the first type of work in the work plan data.

Description

【Technical Field】 【0001】 The present invention relates to a work management method, a work management system, and a work management program. 【Background Art】 【0002】 In recent years, research has been conducted on estimating the work performed by a work device using operation information representing the position of the work device operating in a field and the state of the work device. 【0003】 For example, Patent Document 1 discloses estimating the type of work performed by a work device using a machine learning model learned to output the type of work performed by the work device from operation information, such as tilling, seeding, harvesting, etc. 【Prior Art Documents】 【Patent Documents】 【0004】 【Patent Document 1】 Japanese Patent Application Laid-Open No. 2021-089477 【Summary of the Invention】 【Problems to be Solved by the Invention】 【0005】 In the technique described in Patent Document 1, a complex algorithm was required to estimate the type of work performed by the work device. Further, when using a machine learning model, it is necessary to construct an optimal machine learning model in order to improve the accuracy of estimating the type of work. 【0006】 In view of the above situation, one of the purposes of the present disclosure is to estimate the timing of work. Other purposes can be understood from the following description and the explanation of the embodiments. 【Means for Solving the Problems】 【0007】 A work management method according to one embodiment for achieving the above objective includes storing work plan data that associates a plan type representing the type of work performed in the field with a plan time representing the timing of the work performed in the field. The work management method also includes estimating a second work time, which represents the timing of the second work performed in the field, based on the first work period during which the first work of type 1 was performed in the field and the work plan data. Here, estimating the second work time includes estimating the second work time as the timing when the second work is performed, when the relative timing of the plan time associated with the second work in the work plan data is expressed as the relative timing of the second work being performed with respect to the first work period, with respect to the plan time associated with the first plan type representing the first type of work in the work plan data. 【0008】 A work management system according to one embodiment for achieving the above objective comprises a data storage unit and an estimation unit. The data storage unit stores work plan data that associates work types representing the types of work performed in the field with planned timings representing the timing of work performed in the field. The estimation unit estimates the timing of the second work, which represents the timing of the second work performed in the field, based on the first work period in which the first work of type 1 was performed in the field and the work plan data for the field. Here, the estimation unit estimates the timing of the second work as the timing at which the second work is performed, when the relative timing of the planned timing associated with the second work in the work plan data is expressed as the relative timing at which the second work is performed with respect to the first work period, with respect to the planned timing associated with the first planned timing representing the first work type in the work plan data. 【0009】 A work management program according to one embodiment for achieving the above objective causes the computing device to store work plan data that associates work types representing the types of work performed in the field with planned timings representing the timing of the work performed in the field. The work management program also causes the computing device to estimate the timing of the second work, which represents the timing of the second work performed in the field, based on the first work period during which the first work of type 1 was performed in the field and the work plan data for the field. Here, estimating the second work timing includes estimating the timing of the second work as the timing when the second work is performed, when the relative timing of the planned timing associated with the second work in the work plan data is expressed as the relative timing of the second work being performed with respect to the first work period, with respect to the planned timing associated with the first planned timing representing the first work type in the work plan data. [Effects of the Invention] 【0010】 According to the above configuration, the timing of the work can be estimated. [Brief explanation of the drawing] 【0011】 [Figure 1] This is a schematic diagram of a work management system in one embodiment. [Figure 2] This diagram shows the structure of work performance data in one embodiment. [Figure 3] This diagram shows the structure of work plan data in one embodiment. [Figure 4] This diagram shows a functional block that is executed by a work management system in one embodiment. [Figure 5A] This is a flowchart illustrating the processing performed by the work management system in one embodiment. [Figure 5B] This is a flowchart illustrating the processing performed by the work management system in one embodiment. [Figure 6] This figure shows the work performance data when processing is performed by the work management system in one embodiment. [Figure 7]This figure shows an example of work performance data before processing by the work management system is executed in one embodiment. [Figure 8] This figure shows the work plan data in one embodiment. [Modes for carrying out the invention] 【0012】 (Embodiment 1) A work management system 1000 according to this embodiment of the present invention will be described with reference to the drawings. In this embodiment, as shown in Figure 1, the work management system 1000 comprises a work management device 100 and a terminal 200. The work management device 100 is communicated with the terminal 200, a general-purpose device 31, and a dedicated device 32 via a network 20, for example, the Internet. 【0013】 The general-purpose device 31 performs multiple types of operations in the field, such as tilling, puddling, sowing, herbicide application, fertilizer application, and harvesting. The general-purpose device 31 includes any work machinery that performs one or more types of operations in the field, such as a tiller, a sprayer for applying herbicides and fertilizers, a tractor for pulling a harvester, etc. 【0014】 A dedicated device 32 performs only one type of operation. For example, a dedicated device 32 is formed integrally with a work machine and performs only one type of operation, such as sowing, planting, or harvesting. A dedicated device 32 includes, for example, a seeding machine for sowing seeds, a transplanter for planting seedlings, and a combine harvester for harvesting. Here, if we do not distinguish between the general-purpose device 31 and the dedicated device 32, we will refer to them as work devices 30. 【0015】 The work device 30 transmits operation information representing the operating state when working in the field to the work management device 100. For example, when the engine is stopped, the work device 30 outputs the operation information since the engine was started to the work management device 100. For example, the operation information includes information representing an identifier of the work device 30 as the transmission source, such as information representing the model, serial number, etc. Further, the operation information includes position information representing the position of the work device 30 at each time. The work device 30 includes a positioning device, for example, a receiver of GNSS (Global Navigation Satellite System), and acquires position information representing the position at each time when the work device 30 moves. For example, the positioning device measures the position of the work device 30 at a predetermined time interval. 【0016】 Further, the operation information includes information representing, for example, the speed of the work device 30, the steering angle, the engine speed, the ON / OFF status of various clutches, the position information of the work device 30 at each time, etc. When the work device 30 is a vehicle that towes a working machine, for example, a tractor, the operation information may include information such as the PTO (power take-off) speed when transmitting power to the working machine, the hitch height and lift arm angle indicating the posture of the working machine. 【0017】 When the work is performed by the dedicated device 32, the work management device 100 determines the work type representing the type of work performed. Further, when the work type is determined, the work management device 100 estimates the work type of the work performed by the general-purpose device 31 in the field where the dedicated device 32 has worked, based on the work plan data 320. Thereby, the work management device 100 can accurately estimate the work type of the work performed by the work device 30. 【0018】 (Configuration of the work management system) The configuration of the work management device 100 included in the work management system 1000 shown in FIG. 1 will be described. The work management device 100 includes an input / output device 110, an arithmetic device 120, a communication device 130, and a storage device 140. The work management device 100 is, for example, a computer. Information for the arithmetic device 120 to execute processing is input to the input / output device 110. Also, the input / output device 110 outputs the result of the processing executed by the arithmetic device 120. The input / output device 110 includes various input devices and output devices, and includes, for example, a keyboard, a mouse, a microphone, a display, a speaker, a touch panel, and the like. The input / output device 110 may be omitted. 【0019】 The communication device 130 is electrically connected to the network 20 and communicates with each device via the network 20. For example, the communication device 130 transfers the operation information acquired from the work device 30 to the arithmetic device 120. Also, it transfers the signal generated by the arithmetic device 120 to the terminal 200. The communication device 130 includes various interfaces such as, for example, a NIC (Network Interface Card), a USB (Universal Serial Bus). 【0020】 The storage device 140 stores various data for estimating the work type of the work performed by the general-purpose device 31 in the field, such as device data 300, work performance data 310, work plan data 320, and a work management program 330. The storage device 140 is used as a non-transitory tangible storage medium that stores the work management program 330. The work management program 330 may be provided as a computer program product recorded on a computer-readable storage medium 1, or may be provided as a computer program product downloadable from a server. 【0021】 The device data 300 represents the type of work performed by the work device 30, associated with an identifier of the work device 30, such as its model or serial number. For example, multiple work types are associated with an identifier representing a general-purpose device 31. Also, one work type is associated with an identifier representing a dedicated device 32. For example, "harvesting" is associated with an identifier representing a combine harvester. Furthermore, information indicating that one work type is not specified may be associated with the identifier representing the general-purpose device 31. 【0022】 The work performance data 310 represents information about the work performed by the work device 30. For example, as shown in Figure 2, the work performance data 310 represents the field where the work was performed by the work device 30, the work period representing the time during which the work was performed, and the type of work performed. For example, the work performance data 310 shown in Figure 2 represents that sowing work 400 was performed in field A on May 7th. The work performance data 310 also represents that work was performed in field A on April 9th ​​and May 2nd, but the type of work has not been determined. For example, the work performance data 310 represents that work was performed by the general-purpose device 31 on April 9th ​​and May 2nd, but the type of work is unknown. The work performance data 310 may also store operational information output from the work device 30. The work performance data 310 may also store information determined from the operational information, such as information representing the area where work was performed by the work device 30. 【0023】 The work plan data 320 shown in Figure 1 represents the planned work to be performed by the work device 30 in one or more fields. For example, as shown in Figure 3, the work plan data 320 represents the fields in which work is planned to be performed by the work device 30, the type of work to be performed, and the planned time in which the work will be performed. The work plan data 320 shown in Figure 3 represents that "puddling" will be performed in field A three weeks after "plowing". The work plan data 320 also represents that "sowing" will be performed in field A one week after "puddling". The work plan data 320 also represents that "herbicide spraying" will be performed in field A three weeks after "sowing". The work plan data 320 may also include information representing the area of ​​the field in which work will be performed by the work device 30. 【0024】 The arithmetic unit 120 shown in Figure 1 is used for various data processing to execute the work management program 330 and estimate the type of work performed by the general-purpose device 31. For example, the arithmetic unit 120 includes a central processing unit (CPU). 【0025】 The arithmetic unit 120 reads and executes the work management program 330, thereby realizing a data storage unit 150, a period determination unit 160, a dedicated device determination unit 170, a type estimation unit 180, and an output unit 190, as shown in Figure 4. The data storage unit 150 stores device data 300, work performance data 310, and work plan data 320. The data storage unit 150 also determines the field where work was performed by the work device 30 based on the operation information of the work device 30. The period determination unit 160 determines the work period during which the work device 30 performed work based on the operation information of the work device 30. The dedicated device determination unit 170 determines whether the work device 30 that performed the work is a dedicated device 32 based on the device data 300 and the operation information. The type estimation unit 180 estimates the type of work performed by the work device 30 based on the work period of the work device 30. The output unit 190 outputs work information representing the estimated type of work. 【0026】 Next, the configuration of terminal 200 will be described. As shown in Figure 1, terminal 200 comprises an input / output device 210, an arithmetic unit 220, a communication device 230, and a storage device 240. Terminal 200 includes, for example, a computer, a tablet, a mobile phone, etc. Information for the arithmetic unit 220 to perform processing is input to the input / output device 210. The input / output device 210 also outputs the results of the processing performed by the arithmetic unit 220. The input / output device 210 includes various input and output devices, such as a keyboard, mouse, microphone, display, speaker, touch panel, etc. 【0027】 The communication device 230 is electrically connected to the network 20 and communicates with each device via the network 20. For example, the communication device 230 transfers information acquired from the work management device 100 to the computing device 220. It also transfers signals generated by the computing device 220 to the work management device 100. The communication device 230 includes various interfaces such as transceivers used for wireless communication, such as wireless LAN (Local Area Network) and cellular networks, NIC (Network Interface Card), and USB (Universal Serial Bus). 【0028】 The storage device 240 stores various data for displaying work information acquired from the work management device 100, such as a display program 340. The storage device 240 is used as a non-transitory tangible storage medium for storing the display program 340. The display program 340 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. 【0029】 The arithmetic unit 220 reads and executes the display program 340, and in cooperation with the input / output device 210, realizes the display unit 250 as shown in Figure 4. The display unit 250 acquires work information from the work management device 100 and displays the acquired work information. 【0030】 (Operation of the work management device) When the arithmetic unit 120 of the work management device 100 receives operational information from the work device 30, it reads and executes the work management program 330. By executing the work management program 330, the arithmetic unit 120 performs the work management method shown in Figures 5A and 5B. 【0031】 In step S110, the data storage unit 150, executed by the arithmetic unit 120, determines the fields worked on by the work device 30 based on the operation information of the work device 30. For example, the data storage unit 150 determines the fields worked on by the work device 30 based on the location information included in the operation information. For example, the data storage unit 150 determines the fields that include the location represented in the location information as the fields worked on by the work device 30. The information representing the area of ​​the field is stored, for example, in the work plan data 320. 【0032】 In step S120, the period determination unit 160 determines the work period during which the work device 30 performed work based on the operating information of the work device 30. For example, the period determination unit 160 determines the work period as the period from the first time measured to the last time measured in the location information representing the location within the field. The period determination unit 160 may also determine the start time when the engine of the work device 30 was started and the stop time when it was stopped based on the location information, and determine the work time as the period from the start time to the stop time. 【0033】 In step S130, the dedicated device determination unit 170 determines whether the work device 30 that performed the work is a dedicated device 32, based on the device data 300 and the operation information of the work device 30. For example, the dedicated device determination unit 170 extracts the identifier of the work device 30 that output the operation information from the operation information of the work device 30. The dedicated device determination unit 170 searches the device data 300 for the work type corresponding to the extracted identifier. If there is only one work type found, the dedicated device determination unit 170 determines that the work device 30 that performed the work is a dedicated device 32. If the work device 30 is a dedicated device 32, the process proceeds to step S140. If the work device 30 is not a dedicated device 32, the process proceeds to step S210 shown in Figure 5B. 【0034】 In step S140, the type estimation unit 180 determines the type of work for the first work performed by the work device 30, specifically the dedicated device 32, based on the device data 300. The type estimation unit 180 determines the work type retrieved in step S130 as the work type for the first work performed by the dedicated device 32. For example, as shown in Figure 2, when the dedicated device 32, which only performs "sowing," performed work in field A on May 7, the type estimation unit 180 determines "sowing" as the work type for the work performed in field A on May 7. 【0035】 In step S150, the type estimation unit 180 estimates the type of work for the undetermined second work based on the work plan data 320. For example, the type estimation unit 180 first extracts the second work whose type is undetermined from the work performance data 310. In the example shown in Figure 2, the type estimation unit 180 extracts the work on May 2nd and the work on April 9th ​​as second work whose type is undetermined. 【0036】 Next, the type estimation unit 180 obtains, based on the work performance data 310, the relationship between the work period of the first work whose work type was determined in step S140 and the work period of the extracted undetermined second work. For example, the type estimation unit 180 determines the difference and order between the first work period in which the first work whose work type was determined was performed and the second work period in which the undetermined second work was performed. For example, in the example shown in Figure 2, the type estimation unit 180 obtains information indicating that the second work on May 2nd was performed 5 days before the first work on May 7th, in which the work type was determined. The type estimation unit 180 also obtains information indicating that the second work on April 9th ​​was performed 28 days before the first work on May 7th, in which the work type was determined. 【0037】 Next, the type estimation unit 180 estimates the type of work for the second work based on the work plan data 320, the determined type of work for the first work, and the relationship between the work period of the first work and the work period of the undetermined second work. For example, in the work plan data 320, the type estimation unit 180 determines the type of work for the second work to be the work that corresponds to the relationship between the second work period of the second work and the first work period of the first work, relative to the planned timing when the determined type of work for the first work is scheduled to be performed. For example, in the work plan data 320 shown in Figure 3, the type estimation unit 180 extracts the determined type of work for the first work, for example, "sowing". In relation to the planned timing of the work type "sowing" for the first work, the type estimation unit 180 determines the type of work for the second work to be the work that corresponds to the relationship between the work period of the first work and the work period of the second work, relative to the planned timing when the work type of work for the first work is scheduled to be performed. For example, the type estimation unit 180 determines the type of work for the second work to be the work type of the second work that is closest to the relationship between the work period of the first work and the work period of the second work, with respect to the planned timing of the work type "sowing" for the first work. 【0038】 In the example shown in Figure 2, the work period of the second work, for example, the work on May 2nd, is 5 days prior to the work period of the first work, the sowing work 400. Therefore, the type estimation unit 180 extracts the work type that corresponds to the work 5 days prior to the work type "sowing" of the first work in the work plan data 320. In the example shown in Figure 3, the work type that corresponds to the planning period closest to the time 5 days prior to the work type "sowing" is "puddling," which corresponds to 1 week prior to "sowing." Therefore, as shown in Figure 6, the type estimation unit 180 determines "puddling" as the work type for the work on May 2nd. 【0039】 Similarly, the type estimation unit 180 determines the type of work for April 9th. The relationship between the work period of the April 9th ​​work and the work period of the first work, the sowing work 400, is 28 days prior. In the example shown in Figure 3, the type of work that corresponds to the planning period closest to 28 days prior to the work type "sowing" is "plowing," which is 4 weeks prior, the sum of 1 week and 3 weeks prior to "sowing." Therefore, as shown in Figure 6, the type estimation unit 180 determines "plowing" as the type of work for April 9th. The type estimation unit 180 may also determine the work for April 9th ​​based on the relationship between the work period of the April 9th ​​work and the previously determined puddling work 410. 【0040】 In step S160 of Figure 5A, the output unit 190 outputs work information representing the determined work type to the terminal 200. The work information may include information representing the location and area of ​​the field where the work was performed by the work device 30. The work information may also include information representing the work period during which the work was performed by the work device 30. 【0041】 In step S170, the display unit 250 of the terminal 200 displays work information acquired from the work management device 100. For example, the display unit 250 displays the type of work performed by the work device 30 on the input / output device 210. The display unit 250 may also display an image on a map showing the field where the work was performed by the work device 30 and the type of work performed by the work device 30. The display unit 250 may further display the work period during which the work was performed by the work device 30. 【0042】 If it is determined in step S130 that the work device 30 does not correspond to the dedicated device 32, then in step S210 shown in Figure 5B, the type estimation unit 180 determines whether there is a determined work type in the work performance data 310 for the field where the work was performed. If there is a determined work type in the work performance data 310, the type estimation unit 180 executes the process in step S220. If there is no determined work type in the work performance data 310, the process proceeds to step S230. 【0043】 For example, as shown in Figure 7, suppose the data storage unit 150 of the work management device 100 has acquired operational information regarding work on May 28th. In this case, the work performance data 310 has determined work types including sowing work 400, puddling work 410, and tilling work 420. Therefore, the type estimation unit 180 executes the process of step S220 shown in Figure 5B. 【0044】 In step S220, the type estimation unit 180 estimates the type of work performed by the work device 30 based on the work plan data 320, similar to the process in step S150. For example, first, the type estimation unit 180 obtains the relationship between the first work period of the first work for which the type of work has been determined and the second work period of the second work performed by the work device 30, based on the work performance data 310. For example, in the example shown in Figure 7, the sowing work 400 for which the type of work has been determined was performed on May 7, and the work by the work device 30 was performed on May 28, so the first work was performed 21 days before the work period of the second work. Therefore, the type estimation unit 180 obtains that the second work was performed 21 days after the first work, as the relationship between the first work period of the first work and the second work period of the second work. 【0045】 Next, the type estimation unit 180 estimates the type of work for the second work based on the work plan data 320, the determined type of work for the first work, and the relationship between the first work period of the first work and the second work period of the second work. For example, in the work plan data 320 shown in Figure 3, the type estimation unit 180 extracts "sowing" as the determined type of work for the first work. In Figure 7, the work on May 28th is 21 days after the sowing work 400, so the type estimation unit 180 extracts "herbicide spraying" as the type of work that corresponds to the planning period closest to 21 days after the work type "sowing" in the work plan data 320 shown in Figure 3. The type estimation unit 180 estimates the extracted "herbicide spraying" as the type of work for the work performed on May 28th. In the example shown in Figure 7, the type estimation unit 180 may also determine the work on May 28th based on the relationship between the work period of the work on May 28th and the determined puddling work 410. Furthermore, the type estimation unit 180 may determine the work to be performed on May 28th based on the relationship between the work period of the work on May 28th and the determined tillage work 420. 【0046】 In step S230 shown in Figure 5B, the output unit 190 outputs work information representing the type of work to the terminal 200, similar to the process in step S160 shown in Figure 5A. 【0047】 In step S240, the display unit 250 of the terminal 200 displays work information acquired from the work management device 100, similar to the process in step S170 shown in Figure 5A. For example, the display unit 250 displays the type of work performed by the work device 30 on the input / output device 210. The display unit 250 may also display an image on a map showing the field where the work was performed by the work device 30 and the type of work performed by the work device 30. The display unit 250 may further display the work period during which the work was performed by the work device 30. 【0048】 In this way, the work management system 1000 accurately estimates the type of work performed by a general-purpose device 31 such as a tractor by utilizing the work plan data 320. 【0049】 (modified version) The configuration described in the embodiment is just one example, and the configuration can be changed as long as it does not impede the function. For example, the operation information of the work device 30 may include information indicating whether or not it is a dedicated device 32 as an identifier representing the work device 30. Also, when the work device 30 is a dedicated device 32, the operation information may include information indicating the type of work performed by the dedicated device 32. In this case, in step S130 shown in Figure 5A, the dedicated device determination unit 170 determines that the work device 30 is a dedicated device 32 when the identifier of the work device 30 included in the operation information represents a dedicated device 32. Also, in step S140, the type estimation unit 180 determines the type of work represented by the identifier of the work device 30 included in the operation information as the type of work performed by the work device 30. 【0050】 The device data 300 shown in Figure 1 may store information that associates the identifier of a dedicated device 32 that performs work in the field with the type of work performed by the dedicated device 32. For example, the device data 300 does not have to include information about the general-purpose device 31. In this case, in step S130 shown in Figure 5A, the dedicated device determination unit 170 determines that the working device 30 that performed work in the field corresponds to the dedicated device 32 when the identifier of the working device 30 represented in the operation information is included in the device data 300. Also, when the identifier of the working device 30 represented in the operation information is not included in the device data 300, the dedicated device determination unit 170 determines that the working device 30 that performed work in the field corresponds to the general-purpose device 31. 【0051】 Furthermore, the device data 300 may store information indicating whether or not the work device 30 corresponds to a dedicated device 32, associated with the identifier of the work device 30. In this case, in step S130 shown in Figure 5A, the dedicated device determination unit 170 may determine that the work device 30 corresponds to a dedicated device 32 when the identifier of the work device 30 represented in the operation information represents a dedicated device 32 in the device data 300. 【0052】 In step S150 shown in Figure 5A, the type estimation unit 180 may estimate the type of work for the second work based on the order of the work, as a relationship between the work period of the first work for which the type of work has been determined and the work period of the second work for which the type of work has not yet been determined. For example, in the example shown in Figure 2, the type estimation unit 180 may estimate the type of work for the work on April 9 and the type of work for the work on May 2 based on the order of the work shown in the work plan data 320. For example, in field A, the work on May 2 corresponds to the work immediately preceding the sowing work 400 on May 7. Also, the work on April 9 corresponds to the work two steps before the sowing work 400 on May 7. In the example shown in Figure 3, the type of work for the work immediately preceding the "sowing" work corresponds to "puddling". Therefore, the type estimation unit 180 determines "puddling" as the type of work for the work on May 2. Furthermore, the work type of the work two steps prior to the "sowing" operation is "plowing." Therefore, the type estimation unit 180 determines "plowing" as the work type for the work on April 9th. Similarly, in step S220 shown in Figure 5B, the type estimation unit 180 may estimate the work type of the second work based on the order of the operations, considering the relationship between the work period of the first work for which the work type has been determined and the work period of the second work performed by the work device 30. 【0053】 The work plan data 320 shown in Figure 1 may represent a planned period, for example, a planned date, as the planned work to be performed by the work device 30 in one or more fields. In this case, in step S150 shown in Figure 5A, the type estimation unit 180 estimates the type of work for the second work based on the work plan data 320 and the work period of the undecided second work. For example, the type estimation unit 180 estimates the type of work for the second work based on the planned period that is closest to the work period of the undecided second work among the planned periods stored in the work plan data 320. For example, the type estimation unit 180 extracts the planned period that is closest to the work period of the undecided second work and estimates the type of work of the work planned to be performed during the planned period in the work plan data 320 as the type of work for the second work. Similarly, in step S220 shown in Figure 5B, the type estimation unit 180 may also estimate the type of work based on the work plan data 320 and the work period of the work performed by the work device 30. 【0054】 Furthermore, the work plan data 320 may represent a cultivation calendar corresponding to the crop to be cultivated and the cultivation type, as shown in Figure 8, as the planned period of work. For example, the cultivation type includes information such as the name of the cultivation type of the cultivated crop (e.g., spring planting, summer planting), the type of crop, the variety (early, mid-season, late), the cultivation cycle, and the cultivation method. The example shown in Figure 8 represents the cultivation calendar when "Crop A" is cultivated using "Cultivation Type A". This cultivation calendar indicates that tilling will be carried out between the latter half of March and the middle of April. The cultivation calendar also indicates that puddling will be carried out between the middle of April and the beginning of May, and that sowing will be carried out between the beginning of May and the end of May. The cultivation calendar also indicates that herbicide spraying will be carried out between the beginning of June and the beginning of July. 【0055】 When the work plan data 320 represents the cultivation calendar, in step S150 shown in Figure 5A, the type estimation unit 180 may estimate the type of work for the second work based on the cultivation calendar and the work period of the undetermined second work. For example, the type estimation unit 180 determines the type of work for the second work based on the type of work performed during the work period of the undetermined second work in the cultivation calendar. April 9th, when work was performed in the example shown in Figure 2, corresponds to the time for tilling in the cultivation calendar shown in Figure 8. Therefore, the type estimation unit 180 estimates the type of work performed on April 9th ​​as "tilling". Also, May 2nd, when work was performed in the example shown in Figure 2, corresponds to "puddling" and "sowing" in the cultivation calendar shown in Figure 8. Since the sowing work 400 is performed on May 9th, the type estimation unit 180 estimates the type of work performed on May 2nd as "puddling". In this case, the crops and cultivation methods to be grown in each field may be entered by the user. Similarly, in step S220 shown in Figure 5B, the type estimation unit 180 may estimate the type of work based on the cultivation calendar and the work period of the work performed by the work device 30. 【0056】 Furthermore, the work plan data 320 may represent the planned work to be performed by the work device 30, depending on the crop. In this case, in step S150 shown in Figure 5A and step S220 shown in Figure 5B, the type estimation unit 180 extracts the planned work from the work plan data 320 that corresponds to the crop being cultivated in the field where the work device 30 was performed. Based on the extracted work plan, the type estimation unit 180 estimates the type of work for the undecided second work. 【0057】 Furthermore, in step S150 shown in Figure 5A, the type estimation unit 180 may estimate the type of work of the undecided second work using multiple methods. For example, the type estimation unit 180 may estimate one or more types of work of the undecided second work using multiple methods and estimate the most frequently estimated type as the type of work of the second work. Alternatively, the type estimation unit 180 may estimate one or more types of work of the undecided second work and estimate one type of work from one or more types of work using any method as the type of work of the second work. Similarly, in step S220 shown in Figure 5B, the type estimation unit 180 may estimate the type of work performed by the work device 30 using multiple methods. 【0058】 Furthermore, in step S170 shown in Figure 5A and step S240 shown in Figure 5B, the display unit 250 of the terminal 200 may distinguish and display the first work type determined based on the type of dedicated device 32 and the second work type estimated based on the work plan data 320. In this case, the user may input a confirmation operation to the input / output device 210 of the terminal 200 to confirm the second work type. When a confirmation operation is input, the display unit 250 outputs confirmation information to the work management device 100 indicating that the second work type has been confirmed. The type estimation unit 180 of the work management device 100 stores information indicating that the corresponding work type has been confirmed in the work performance data 310 based on the confirmation information. 【0059】 Furthermore, field information regarding fields where work has been performed by the work device 30 may be input by the user to the input / output device 210 of the terminal 200. In this case, the display unit 250 of the terminal 200 outputs the field information to the work management device 100. The data storage unit 150 of the work management device 100 may determine the fields where work has been performed by the work device 30 based on the field information. 【0060】 The embodiments and modifications described above are examples, and the configurations described in each embodiment and modification may be arbitrarily changed and / or combined as long as they do not impede the function. Furthermore, some of the functions described in the embodiments and modifications may be omitted if the necessary functions can be realized. For example, some or all of the processing of the work management device 100 may be performed by the terminal 200. Alternatively, some or all of the processing of the terminal 200 may be performed by the work management device 100. The work management program 330 may include a display program 340. Also, the work management system 1000 may not include the terminal 200 and may display work information on an external terminal not included in the work management system 1000. Furthermore, the work period during which work is performed by the work device 30 may span multiple days. 【0061】 (Note) The work management method, work management system, and work management program described in each embodiment can be described as follows. 【0062】 The work management method relating to the first aspect is: The arithmetic unit performs the task of storing work plan data that associates a plan type representing the type of work to be performed in the field with a plan time representing the timing of the work to be performed in the field. The computing device performs the following: estimating the timing of the second work, which represents the timing of the second work to be performed in the field, based on the first work period during which the first work of type 1 was performed in the field, and the work plan data. Includes, Estimating the timing of the second operation is In the work plan data, the timing at which the second work is performed is estimated as the timing at which the second work is performed, when the timing of the planning period associated with the second work in the work plan data is expressed as the timing at which the second work is performed relative to the first work period, with respect to the planning period associated with the first planning period representing the first work type. Includes. 【0063】 The work management method relating to the second aspect is the work management method relating to the first aspect, The second operation refers to an operation performed in the field a predetermined number of times before or after the first operation. 【0064】 The work management method relating to the third aspect is the work management method relating to the first aspect, The aforementioned second task represents a task of type 2 task category. 【0065】 The work management method relating to the fourth aspect is a work management method relating to any one of the first to third aspects, The aforementioned work plan data represents the cultivation calendar. 【0066】 The work management system relating to the fifth aspect is: A data storage unit that stores work plan data that associates work type, which represents the type of work performed in the field, with planned timing, which represents the timing of the work performed in the field. An estimation unit that estimates the timing of the second work to be performed in the field, based on the first work period during which the first work of type 1 is performed in the field, and the work plan data, Equipped with, The estimation unit, In the work plan data, the timing at which the second work is performed is estimated as the timing at which the second work is performed, when the timing of the planning period associated with the second work in the work plan data is expressed as the timing at which the second work is performed relative to the first work period, with respect to the planning period associated with the first planning period representing the first type of work. 【0067】 The work management program relating to the sixth aspect is: To store work plan data that associates work type, which represents the type of work performed in the field, with planned timing, which represents the timing of the work performed in the field. Based on the first work period during which the first work of type 1 was performed in the field, and the work plan data, the second work period, which represents the timing of the second work to be performed in the field, is estimated. The computing unit is made to execute this, Estimating the timing of the second operation is In the work plan data, the timing at which the second work is performed is estimated as the timing at which the second work is performed, when the timing of the planning period associated with the second work in the work plan data is expressed as the timing at which the second work is performed relative to the first work period, with respect to the planning period associated with the first planning period representing the first work type. Includes. [Explanation of symbols] 【0068】 1, 2: Storage medium 20: Network 30: Work equipment 31: General-purpose device 32: Dedicated device 100: Work management device 110: Input / Output Devices 120: Arithmetic device 130: Communication device 140: Storage device 150: Data storage unit 160: Period Determination Section 170: Dedicated device determination unit 180: Type Estimation Unit 190: Output section 200: Terminal 210: Input / Output Devices 220: Arithmetic device 230: Communication equipment 240: Storage device 250:Display section 300: Device data 310: Work performance data 320: Work plan data 330: Work Management Program 340: Display Program 400: Seeding work 410: Puddling work 420: Tillage work 1000: Work Management System

Claims

[Claim 1] The arithmetic unit performs the task of storing work plan data that associates a plan type representing the type of work to be performed in the field with a plan time representing the timing of the work to be performed in the field. The computing device performs the following: estimating the timing of the second work, which represents the timing of the second work to be performed in the field, based on the first work period during which the first work of type 1 was performed in the field, and the work plan data. Includes, Estimating the timing of the second operation is In the work plan data, the timing at which the second work is performed is estimated as the timing at which the second work is performed, when the timing of the planning period associated with the second work in the work plan data is expressed as the timing at which the second work is performed relative to the first work period, with respect to the planning period associated with the first planning period representing the first type of work. A work management method that includes this. [Claim 2] The second operation refers to an operation performed in the field a predetermined number of times before or after the first operation. The work management method according to claim 1. [Claim 3] The aforementioned second task represents a task whose type is the second task type. The work management method according to claim 1. [Claim 4] The aforementioned work plan data represents the cultivation calendar. A work management method according to any one of claims 1 to 3. [Claim 5] A data storage unit that stores work plan data that associates work type, which represents the type of work performed in the field, with planned timing, which represents the timing of the work performed in the field. An estimation unit estimates the timing of the second work to be performed in the field, based on the first work period during which the first work of a type designated as the first work category was performed in the field, and the work plan data. Equipped with, The estimation unit, In the work plan data, the timing at which the second work is performed is estimated as the timing at which the second work is performed, when the timing of the planning period associated with the second work in the work plan data is expressed as the timing at which the second work is performed relative to the first work period, with respect to the planning period associated with the first planning period representing the first work type. Work management system. [Claim 6] To store work plan data that associates work type, which represents the type of work performed in the field, with planned timing, which represents the timing of the work performed in the field. Based on the first work period during which the first work of type 1 is performed in the field, and the work plan data, the second work period, which represents the timing of the second work to be performed in the field, The computing unit is made to execute this, Estimating the timing of the second operation is In the work plan data, the timing at which the second work is performed is estimated as the timing at which the second work is performed, when the timing of the planning period associated with the second work in the work plan data is expressed as the timing at which the second work is performed relative to the first work period, with respect to the planning period associated with the first planning period representing the first type of work. A work management program that includes this.

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