Program, soil measurement guide device, and soil measurement guide method

Abstract

To provide a program, a soil measurement guide device, and a soil measurement guide method capable of guiding a user to a soil measurement point more accurately.SOLUTION: The program for causing a terminal device equipped with a display unit to execute the program includes: acquiring first position information representing the position of the terminal device; acquiring second position information of a target point from a storage unit in which the second position information representing the position of a point where a soil condition was measured, and soil information representing the soil condition are stored; and making the display unit display a direction of the target point as viewed from the terminal device and the distance between the terminal device and the target point based on the first position information and the second position information.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a program, a soil measurement guidance device, and a soil measurement guidance method. This application claims priority based on Japanese Patent Application No. 2024-001401 filed in Japan on January 9, 2024, the content of which is incorporated herein by reference.

Background Art

[0002] In a field, the state of the soil is measured to check the necessity of fertilizers and the presence or absence of diseases. However, since there are no landmark objects in the field, it is difficult to measure the state of the soil at the same point every time.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Patent Document 3

Summary of the Invention

Problems to be Solved by the Invention

[0004] In a field without landmarks, it is required to accurately guide a user to the point where the soil should be measured, but the conventional technology has not sufficiently considered this.

[0005] One object of the present invention is to provide a program, a soil measurement guidance device, and a soil measurement guidance method that can more accurately guide a user to the soil measurement point in view of such circumstances.

Means for Solving the Problems

[0006] One aspect of the present invention is a program for causing a terminal device provided with a display unit to execute, acquiring first position information representing the position of the terminal device, acquiring the second position information of a target point from a storage unit storing the second position information representing the position of the point where the soil condition was measured and the soil information representing the soil condition, and causing the display unit to display the direction of the target point as viewed from the terminal device and the distance between the terminal device and the target point based on the first position information and the second position information.

[0007] Another aspect of the present invention is a soil measurement guidance device including a position sensor, a holder to which a terminal device having a display unit can be attached, a soil sensor for measuring the soil condition, and a support member to which the position sensor, the holder, and the soil sensor are attached. The position sensor is attached to one end of the support member, and the soil sensor is attached to the other end of the support member.

[0008] Another aspect of the present invention is a soil measurement guidance device including a hat that can be worn on a user's head, a multi-axis arm attached to the hat, a position sensor attached to the tip of the multi-axis arm, and a holder to which a terminal device having a display unit and for controlling the multi-axis arm can be attached.

[0009] Another aspect of the present invention is a soil measurement guidance method using a terminal device provided with a display unit, including acquiring first position information representing the position of the terminal device, acquiring the second position information of a target point from a storage unit storing the second position information representing the position of the point where the soil condition was measured and the soil information representing the soil condition, and causing the display unit to display the direction of the target point as viewed from the terminal device and the distance between the terminal device and the target point based on the first position information and the second position information.

Advantages of the Invention

[0010] According to the above aspect, the user can be more accurately guided to the soil measurement point. As a result, the soil condition can be measured with higher accuracy. For example, the user can identify the points where fertilizers should be added or where diseases have occurred, and as a result, agriculture can be carried out efficiently.

Brief Description of the Drawings

[0011]

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Embodiments for Carrying Out the Invention

[0012] Hereinafter, with reference to the drawings, embodiments of the program, soil measurement guidance device, and soil measurement guidance method of the present invention will be described.

[0013] [Configuration of the Soil Measurement Guidance System] FIG. 1 is a diagram showing an example of the configuration of a soil measurement guidance system 1 according to an embodiment. The soil measurement guidance system 1 includes, for example, a soil measurement guidance device 100, a server 300, a reference station 400, and a plurality of GNSS (Global Navigation Satellite System) satellites 500. The server 300 is an example of a "storage unit".

[0014] The soil measurement guidance device 100 is a device that guides the user U to a point where the state of the soil in the field should be measured. The soil measurement guidance device 100 acquires high-precision position information by using, for example, RTK (Real-time kinematic)-GNSS. Specifically, the soil measurement guidance device 100 receives position information from both the GNSS satellite 500 and the reference station 400, and corrects the position information of the GNSS satellite 500 using the position information of the reference station 400.

[0015] Furthermore, the soil measurement guidance device 100 measures the state of the soil at an arbitrary point in the field. Then, the soil measurement guidance device 100 transmits the soil information representing the measurement result to the server 300 via a network together with the position information of the point where the soil was measured. The network is, for example, a LAN (Local Area Network) or a WAN (Wide Area Network).

[0016] The server 300 is a database server that stores, in association with each other, the position information of the point where the soil is measured in the field and the soil information.

[0017] The reference station 400 receives position information from the GNSS satellites 500 and further transmits the received position information to the soil measurement guidance device 100.

[0018] Each of the plurality of GNSS satellites 500 transmits position information including the position of the GNSS satellite 500 and the signal transmission time, etc. toward the ground.

[0019] [Configuration of Soil Measurement Guidance Device] Figures 2 to 4 are diagrams showing an example of the configuration of the soil measurement guidance device 100 according to the embodiment. As shown in the drawings, the soil measurement guidance device 100 includes, for example, a support member 110, a position sensor 120, a holder 130, and a soil sensor 140. Since the soil measurement guidance device 100 having these components is used outdoors, it is preferably waterproofed. Also, the soil measurement guidance device 100 does not necessarily have to include the soil sensor 140.

[0020] The support member 110 may be, for example, a rod-shaped member such as a rod or a plate-shaped member. A position sensor 120 is attached to one end of the support member 110, and a soil sensor 140 is attached to the other end. Also, a holder 130 is attached to the middle part of the support member 110.

[0021] The position sensor 120 is, for example, an RTK-GNSS positioning module (GNSS receiver). The position sensor 120 receives position information from both the GNSS satellites 500 and the reference station 400, and corrects the position information of the GNSS satellites 500 using the position information of the reference station 400 (for example, the integrated value of the phase of the carrier wave of the GNSS satellite 500 and the phase of the carrier wave of the reference station 400). When the position sensor 120 measures a position, it outputs position information (which may be read as position data) representing the measurement result.

[0022] A general-purpose terminal device 200 such as a smartphone, a tablet terminal, or a microcontroller is mounted on the holder 130. For example, the holder 130 may hold or catch the terminal device 200 vertically as shown in FIGS. 2 and 3. Further, the holder 130 may hold or catch the terminal device 200 horizontally as shown in FIG. 4. Further, the holder 130 may hold or catch the terminal device 200 obliquely, that is, at an intermediate position between vertical and horizontal, such that the terminal device 200 leans against the support member 110.

[0023] The soil sensor 140 is a sensor that measures the state of the soil (for example, electrical conductivity, volumetric water content, temperature, etc.). When the soil sensor 140 measures the state of the soil, it outputs soil information (which may be read as soil data) representing the measurement result.

[0024] When the soil measurement guidance device 100 is provided with the soil sensor 140, the user U carries the soil measurement guidance device 100 and moves to the soil measurement point according to the guidance of the soil measurement guidance device 100, and measures the state of the soil using the soil measurement guidance device 100 at the guided point. When the soil measurement guidance device 100 is not provided with the soil sensor 140, the user U carries the soil measurement guidance device 100 and moves to the soil measurement point according to the guidance of the soil measurement guidance device 100, collects the soil at the guided point, and may take the soil back to another location (for example, a research institute, etc.). Then, the user U may measure the state of the taken-back soil using a previously prepared soil sensor.

[0025] [Soil measurement point in the field] FIG. 5 is a diagram showing an example of soil measurement points in a field. The illustrated example represents an overhead view of the field. In the field, soil measurement points exist at intervals of about several meters to a dozen or so meters. At each point, the electrical conductivity (EC) is measured as an example of the soil condition. As in the illustrated example, the soil condition in the field is not uniform, and there are points with high electrical conductivity and points with low electrical conductivity. Furthermore, there may be points where the number of measurements is scarce and the electrical conductivity is unknown. Therefore, the soil measurement guidance device 100 selects measurement points (hereinafter also referred to as target points) that meet various purposes, such as focusing on measuring points with low / high electrical conductivity or points with a scarce number of measurements among the plurality of measurement points, and guides the user to that point.

[0026] [Configuration of the Terminal Device] FIG. 6 is a diagram showing an example of the configuration of the terminal device 200 according to the embodiment. The terminal device 200 includes, for example, a communication interface 210, an input interface 220, an output interface 230, an orientation sensor 240, a storage unit 250, and a processing unit 260.

[0027] The communication interface 210 includes, for example, a wireless communication module including a receiver and a transmitter. The communication interface 210 communicates with an external device, for example, wirelessly (e.g., Wireless LAN) or by wire. The external device is, for example, the position sensor 120, the soil sensor 140, the server 300, or the like.

[0028] The input interface 220 receives various input operations from the user, converts the received input operations into electrical signals, and outputs them to the processing unit 260. The input interface 220 is typically a touch panel, but is not limited thereto. For example, the input interface 220 may be a mouse, a keyboard, a trackball, a switch, a button, a joystick, or the like. Further, the input interface 220 may be a voice user interface that receives voice input including, for example, a microphone.

[0029] The output interface 230 includes, for example, a display, a speaker, etc. The display displays an image generated by the processing unit 260, a GUI (Graphical User Interface) for receiving various input operations from the user, etc. For example, the display is an LCD (Liquid Crystal Display), an organic EL (Electro Luminescence) display, etc. The speaker outputs the information input from the processing unit 260 as sound. When the input interface 220 is a touch panel, the input interface 220 and the output interface 230 may be integrally configured.

[0030] The orientation sensor 240 includes, for example, a gyro sensor, a magnetic sensor, etc. The orientation sensor 240 measures the orientation.

[0031] The storage unit 250 is realized by, for example, an HDD (Hard Disc Drive), a flash memory, an EEPROM (Electrically Erasable Programmable Read Only Memory), a ROM (Read Only Memory), a RAM (Random Access Memory), etc. The storage unit 250 stores various programs such as firmware and application programs.

[0032] The processing unit 260 is realized by, for example, a processor such as a CPU (Central Processing Unit) or a GPU (Graphics Processing Unit) executing a program stored in the storage unit 250. Also, some or all of the components of the processing unit 260 may be realized by hardware such as an LSI (Large Scale Integration), an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array), a SOC (System On Chip), or may be realized by the cooperation of software and hardware.

[0033] [Configuration of Server] FIG. 7 is a diagram showing an example of the configuration of server 300 according to the embodiment. Server 300 includes, for example, a communication interface 310, a storage unit 320, and a processing unit 330.

[0034] The communication interface 310 includes, for example, a NIC (Network Interface Card), a wireless communication module including a receiver and a transmitter, and the like. The communication interface 310 communicates with the terminal device 200 wirelessly (e.g., Wireless LAN) or by wire.

[0035] The storage unit 320 is realized by, for example, an HDD, a flash memory, an EEPROM, a ROM, a RAM, or the like. The storage unit 320 stores various programs such as firmware and application programs. In addition, soil information and position information at each measurement point in the field are stored as a database in the storage unit 320.

[0036] The functions of the processing unit 330 are realized, for example, when a processor such as a CPU or a GPU executes a program stored in the storage unit 250. In addition, part or all of the functions of the processing unit 330 may be realized by hardware such as an LSI, an ASIC, an FPGA, or an SOC, or may be realized by cooperation between software and hardware.

[0037] [Sequence of Soil Measurement Guidance Device and Server] FIG. 8 is a sequence diagram showing a series of processing flows of the soil measurement guidance device 100 and the server 300 according to the embodiment.

[0038] First, when a dedicated application for guiding the soil measurement location is launched by the user in the processing unit 260 of the terminal device 200 incorporated in the soil measurement guidance device 100 (step S100), a predetermined request is transmitted to the server 300 via the communication interface 210 (step S102).

[0039] The predetermined request is, for example, a request for inquiring which of a plurality of soil measurement points existing in the farmland is the target point where the user U should measure the soil.

[0040] When the communication interface 310 of the server 300 receives a predetermined request, the processing unit 330 of the server 300 accesses the database stored in the storage unit 320 and extracts a list of soil information at each measurement point in the farmland where the user is located (step S104). The list includes not only the soil information obtained at each measurement point but also the location information of each measurement point.

[0041] Then, the processing unit 330 transmits the list of soil information to the terminal device 200 via the communication interface 310 (step S106).

[0042] When the communication interface 210 of the terminal device 200 receives the list of soil information, the processing unit 260 of the terminal device 200 causes it to be displayed as a GUI on the display of the output interface 230 (step S108).

[0043] FIG. 9 is a diagram showing an example of a list of soil information displayed on the terminal device 200. As shown in the figure, in the list, the number of soil information (i.e., the number of data) measured by the soil sensor 140 (or another soil sensor may also be used) is associated with the ID of each measurement point. Further, in the list, a label indicating that the number of soil measurements is insufficient is assigned to the measurement points where the number of soil measurements is less than the threshold value. In the illustrated example, the number of data at the measurement point with the ID of "5" is 10, and a label "Less" indicating insufficient data is assigned.

[0044] For example, user U checks the list and determines that the measurement point with ID "5" labeled "Less" is the "target point". Then, user U selects ID "5" on the list by tapping. Additionally, user U may select not only measurement points with insufficient data but also any other measurement points. As a result, the processing unit 260 of the terminal device 200 calculates the distance and direction to the measurement point selected as the "target point" by user U and starts guiding to that target point.

[0045] Note that the process of S108 may be omitted. That is, it may be omitted to let user U check the list and select any one from the measurement points in the list. In this case, the processing unit 330 of the server 300 may, for example, determine the measurement point with insufficient data on the list as the target point and transmit only the position information and soil information regarding that measurement point with insufficient data to the terminal device 200 instead of the list. Also, when the processing unit 260 of the terminal device 200 receives the list from the server 300, for example, it may determine the measurement point with insufficient data on the list as the target point and start guiding to that measurement point with insufficient data without user U's operation.

[0046] Next, the processing unit 260 of the terminal device 200 causes a screen (hereinafter referred to as a guidance screen) for guiding user U to the target point to be displayed as a GUI on the display of the output interface 230 (step S110).

[0047] FIG. 10 is a diagram showing an example of the guidance screen displayed on the terminal device 200. OB1 in the figure is a screen element representing the distance from the current position of the terminal device 200 to the target point. Hereinafter, the screen element may be read as a UI element.

[0048] OB2 is a screen element indicating the direction in which the target point exists as viewed from the current position of the terminal device 200. As shown in the figure, the screen element OB2 may have a shape such as a triangle or an arrow. The shape of the screen element OB2 is changed according to the distance to the target point.

[0049] OB3 is a screen element that represents the position information measured in real time by the position sensor 120 and the soil information measured in real time by the soil sensor.

[0050] OB4 is a screen element that represents the ID of the current measurement location. That is, on this guidance screen, the user U is being guided from ID1 to ID5.

[0051] OB5 is a screen element that represents the IP address of the server 300. OB6 is a screen element that represents the position information (latitude and longitude) of the current measurement location.

[0052] OB7 is a screen element for reading out the position information (latitude and longitude) associated with the ID of the current measurement location on the list from the list. The read

[0053] OB8 is a screen element for temporarily storing in the storage unit 250 by associating the position information measured in real time by the position sensor 120 (that is, the position information displayed on OB3) with the ID of the current measurement location.

[0054] OB9 is a screen element for storing, starting, and ending the soil information (soil data) output by the soil sensor 140.

[0055] OB10 is a screen element for uploading the position information (position data) and soil information (soil data) associated with the ID of the current measurement location to the server 300.

[0056] FIG. 11 and FIG. 12 are diagrams schematically showing how the shape of the screen element OB2 changes. The screen element OB2 may be represented by, for example, two types of arrows. For example, the processing unit 260 may make the arrow larger or longer as the distance to the target point is longer, and conversely, make the arrow smaller or shorter as the distance to the target point is shorter. By changing the shape of the screen element OB2 indicating the direction of the target point according to the distance in this way, the user U can sensuously recognize the distance and direction to the target point. Further, the processing unit 260 may also change the color, pattern, etc. of the screen element OB2 according to the distance to the target point.

[0057] Return to the description of the sequence diagram in FIG. 8. For example, assume that the user U moves to the target point according to the guidance screen and the soil condition at that point is measured by the soil measurement guidance device 100. In this case, the processing unit 260 of the terminal device 200 acquires the position information of the target point from the position sensor 120 and the soil information of the target point from the soil sensor 140 (step S112).

[0058] Next, the processing unit 260 transmits the position information and soil information of the target point to the server 300 via the communication interface 210 (step S114).

[0059] When the communication interface 310 of the server 300 receives the position information and soil information of the target point, the processing unit 330 of the server 300 updates the database stored in the storage unit 320 (step S116). Specifically, the processing unit 330 saves the position information and soil information for the ID of the target point on the database and further increments the measurement count of the target point. Thus, a series of processing is completed.

[0060] According to the embodiment described above, the processing unit 260 of the terminal device 200 incorporated in the soil measurement guidance device 100 acquires the current position information (an example of "first position information") of the terminal device 200 from the position sensor 120.

[0061] The processing unit 260 acquires, from a server 300 (an example of a "storage unit") in which position information of the point where the state of the soil was measured (an example of "second position information") and soil information of the point are stored as a database, position information of a target point at which the user U should measure the soil.

[0062] Based on the current position information of the terminal device 200 and the position information of the target point, the processing unit 260 calculates the direction of the target point as viewed from the current position of the terminal device 200 and the distance from the current position of the terminal device 200 to the target point.

[0063] Then, the processing unit 260 causes a guidance screen in which the direction and distance to the target point are included as image elements (OB1, OB2, etc.) to be displayed as a GUI on the display of the output interface 230.

[0064] By such processing, the user U can be more accurately guided to the target point which is one of the soil measurement points. Since the state of the soil can be measured with higher accuracy, for example, the user U can grasp the point where fertilizer should be added, the point where a disease has occurred, etc. As a result, the user U can perform agriculture efficiently.

[0065] (Other Embodiments) Hereinafter, modifications of the above-described embodiments will be described. In the above-described embodiment, the soil measurement guidance device 100 has been described as storing the position information and soil information of each measurement point in the storage unit 320 of the server 300 on a network such as a LAN or WAN, but it is not limited to this. For example, the soil measurement guidance device 100 may store the position information and soil information of each measurement point in the storage unit 250 of the terminal device 200. Further, when a portable storage medium such as an SD memory card or a USB flash drive is connected to a drive device (not shown) of the terminal device 200, the soil measurement guidance device 100 may store the position information and soil information of each measurement point in those portable storage media. In such a case, the storage unit 250 of the terminal device 200 and the portable storage media are other examples of the "storage unit".

[0066] Also, in the above-described embodiment, the soil measurement guiding device 100 has been described as having the position sensor 120 and the soil sensor 140 attached to the end of the support member 110 such as a lot, and the holder 130 to which the terminal device 200 can be attached is attached to the middle part. However, such a configuration is merely an example, and the soil measurement guiding device 100 may adopt, for example, the following configuration.

[0067] FIG. 13 is a diagram showing another example of the configuration of the soil measurement guiding device 100 according to the embodiment. As shown in the illustrated example, the soil measurement guiding device 100 may include a position sensor 120, a holder 130, a cap 160, a microcontroller 170, a multi-axis arm 180, and an indicator 190.

[0068] As described above, the position sensor 120 is an RTK-GNSS positioning module (GNSS receiver).

[0069] The holder 130 may be attached to, for example, a band 130A that can be worn on a part of the body of the user U (for example, the shoulder). Thereby, the terminal device 200 can be worn on the shoulder of the user U via the holder 130.

[0070] The cap 160 is a cap, hat, helmet, or the like that is worn on the head of the user U.

[0071] The microcontroller 170 is attached to the cap 160. The microcontroller 170 communicates with the position sensor 120 wirelessly or by wire to acquire position information from the position sensor 120. The microcontroller 170 communicates with the multi-axis arm 180 wirelessly or by wire to drive the multi-axis arm 180. The microcontroller 170 communicates with the terminal device 200 wirelessly or by wire to transmit position information to the terminal device 200 or receive a specific command from the terminal device 200. The specific command is, for example, a command for controlling the multi-axis arm 180 so that the indicator 190 indicates the direction to the target point.

[0072] One end of the multi-axis arm 180 is attached to the cap 160, and a position sensor 120 is attached to the other end.

[0073] The indicator 190 is attached to the other end of the multi-axis arm 180, like the position sensor 120. The indicator 190 is, for example, a device for indicating the direction to the target point, and may have, for example, a shape imitating a human hand.

[0074] When the processing unit 260 of the terminal device 200 calculates the direction of the target point as seen from the current position of the terminal device 200, it sends a specific command to the microcontroller 170, and indirectly controls the multi-axis arm 180 via the microcontroller 170 so that the indicator 190 faces the direction of the target point.

[0075] In this way, by using the hat-type soil measurement guiding device 100 that can be worn on the head of the user U, the user U can move to the target point where the soil should be measured while freely using both hands. When moving to the target point, the user U may hold crops or spread fertilizers with both hands. When the user U reaches the target point, the user U can collect the soil at the target point and take it back to another place (such as a research institute, etc.), and further measure the state of the soil at the target point taken back using a separately prepared soil sensor at that other place. In this way, the soil sensor 140 does not have to be an essential component of the soil measurement guiding device 100.

[0076] Also, in the above-described embodiment, a single soil measurement guiding device 100 has been described as including both the position sensor 120 and the soil sensor 140, but it is not limited to this. The position sensor 120 and the soil sensor 140 may be separated into separate devices.

[0077] FIG. 14 is a diagram showing another example of the configuration of the soil measurement guiding device 100 according to the embodiment. For example, one soil measurement guiding device 100-A may include a support member 110, a position sensor 120, and a holder 130, and the other soil measurement guiding device 100-B may include a support member 110, a holder 130, and a soil sensor 140. The soil measurement guiding device 100-A is used only for guiding to the target point. The soil measurement guiding device 100-B is used only for soil measurement.

[0078] FIGS. 15 and 16 are diagrams showing an example of a usage scene of the soil measurement guiding devices 100-A and 100-B. For example, while carrying one or more flags F, the user U1 moves to the target point according to the guidance by the soil measurement guiding device 100-A.

[0079] The flag F is a three-dimensional object (a tangible object) used as a mark to inform a subsequent user U2 of where the target point is in the field. The flag F is an example of a "predetermined object".

[0080] A dedicated ID (identification data) is assigned to the flag F in advance. Hereinafter, the dedicated ID is referred to as a flag ID. The flag ID is typically a consecutive number, but is not limited thereto, and may be a complex ID including alphabets, symbols, etc. Further, the flag ID may be encoded in a one-dimensional code or a two-dimensional code.

[0081] The flag ID may be directly engraved on the flag F, a tape with the flag ID printed thereon may be attached, or an RF (Radio Frequency) tag with the flag ID written thereon may be attached.

[0082] When the flag ID is encoded in a one-dimensional code or a two-dimensional code, the one-dimensional code or the two-dimensional code may be decoded into the flag ID using the camera of the terminal device 200. Also, when the flag ID is written in an RF tag, the flag ID may be read from the RF tag using the wireless function of the terminal device 200.

[0083] User U1 searches for and carries a flag F assigned with the same flag ID as the ID of the target point guided by the soil measurement guiding device 100-A from among a plurality of flags F with which flag IDs are previously assigned. For example, when the ID of the target point is "5", a flag F with a flag ID of "5" is searched for and carried by user U1.

[0084] When user U1 reaches the target point guided by the soil measurement guiding device 100-A, user U1 sets up the flag F assigned with the same flag ID as the ID of the target point on the ground at the target point.

[0085] When a plurality of target points are guided, user U1 sets up a flag F assigned with the same flag ID as the ID of each target point at each target point. As a result, as shown in FIG. 15, a plurality of flags F are set up in the field.

[0086] When a flag F is set up in the field, the subsequent user U2 moves to the point where the flag F is set up (hereinafter referred to as the flag installation point) with the soil measurement guiding device 100-B. The flag installation point is an example of the "object installation point".

[0087] When user U2 arrives at the flag installation location, the user measures the soil at the flag installation location on-site using the soil measurement guidance device 100-B, or collects the soil at the flag installation location and then measures the soil at a research institute or the like. When multiple flags F are installed in the field, as shown in FIG. 16, user U2 measures or collects the soil at each flag installation location. When user U2 finishes measuring or collecting the soil at the flag installation location, user U2 collects (removes) the flag F. Thus, the flag F is not permanently installed in the field, but is temporarily installed in the field and then collected.

[0088] For example, user U2 inputs the soil information of the flag installation location together with the flag ID to the terminal device 200 attached to the holder 130 of the soil measurement guidance device 100-B. When the flag ID is the same as the ID of the target location, the soil information of the flag installation location measured using the soil measurement guidance device 100-B is directly associated with the ID (i.e., location information) of the target location. Specifically, the soil information of the flag installation location where the flag F with the flag ID of "5" is installed is associated with the target location with the ID of "5". Even if the flag ID and the ID of the target location are different but are in a one-to-one relationship, the soil information of the flag installation location measured using the soil measurement guidance device 100-B is indirectly associated with the ID (i.e., location information) of the target location via the flag ID. The soil information and location information of the target location thus associated with each other are stored in the storage unit 320 of the server 300 or the storage unit 250 of the terminal device 200 as described above.

[0089] In this way, after user U1 moves to the target location, installs the flag F on-site, and then user U2 moves to the location where the flag F is installed to measure the soil, the soil measurement can be performed more efficiently.

[0090] Generally, compared with guiding to a target point using RTK-GNSS, soil measurement tends to take a longer working time. Therefore, by dividing the roles such as user U1 who identifies the target point in the field and user U2 who measures the soil at the target point, soil measurement can be performed more efficiently.

[0091] In addition, in the above description, it has been described that the flag ID is pre-assigned to the flag F, but it is not limited to this. For example, user U1 carries as many flags F (that is, flags F for which the flag ID has not yet been assigned) without the tape with the flag ID printed thereon as the number of target points, and moves to each target point. When user U1 arrives at the target point, the user prints the flag ID on the tape using a label writer or a label printer on the spot, and attaches the tape to the flag F. In this way, by performing the assignment of the flag ID afterwards, the operation of searching for the flag F to which the same flag ID as the ID of the target point is assigned from among a plurality of flags F to which the flag ID has been pre-assigned can be omitted.

[0092] As described above, the embodiments for implementing the present invention have been described using the embodiments, but the present invention is not limited to such embodiments, and various modifications and substitutions can be made without departing from the gist of the present invention.

Explanation of Reference Numerals

[0093] 100... Soil measurement guidance device, 110... Support member, 120... Position sensor, 130... Holder, 140... Soil sensor, 160... Cap, 170... Microcontroller, 180... Multi-axis arm, 190... Indicator, 200... Terminal device, 300... Server, 400... Reference station, 500... GNSS satellite

Claims

1. A program for causing a terminal device having a display unit to execute, acquiring first position information representing the position of the terminal device, acquiring the second position information of a target point from a storage unit in which the second position information representing the position of the point where the soil condition is measured and the soil information representing the soil condition are stored, based on the first position information and the second position information, causing the display unit to display the direction of the target point as seen from the terminal device and the distance between the terminal device and the target point, A program including.

2. Further including causing the display unit to display a screen element corresponding to the direction and the distance, The program according to claim 1.

3. The screen element has a shape of an arrow or a triangle indicating the direction, Further including varying the shape according to the distance, The program according to claim 2.

4. The terminal device is incorporated and used in a soil measurement guidance device having a soil sensor for measuring the soil condition and a position sensor for measuring the position of the terminal device, The target point is a point where the number of times of measuring the soil condition is less than a threshold value, After the direction and the distance are displayed on the display unit, when the soil condition at the target point is measured by the soil sensor, acquiring the soil information of the target point from the soil sensor and acquiring the first position information of the terminal device from the position sensor as the second position information of the target point, Further including storing the soil information and the second position information of the target point in the storage unit, The program according to claim 1 or 2.

5. A position sensor, A holder to which a terminal device having a display unit can be attached, A soil sensor for measuring the soil condition, Comprising the position sensor, the holder, and a support member to which the soil sensor is attached, One end of the support member is attached with the position sensor, The other end of the support member is attached with the soil sensor, Soil measurement guidance device.

6. The terminal device further has a processing unit, The processing unit, acquires first position information representing the position of the terminal device from the position sensor, acquires the second position information of a target point from a storage unit in which the second position information representing the position of the point where the soil condition is measured and the soil information representing the soil condition are stored, Based on the first position information and the second position information, the direction of the target point as seen from the terminal device and the distance between the terminal device and the target point are displayed on the display unit. The soil measurement guidance device according to claim 5.

7. A hat that can be worn on the user's head, A multi-axis arm attached to the hat, A position sensor attached to the tip of the multi-axis arm, A terminal device having a display unit, and a holder to which the terminal device that controls the multi-axis arm can be attached, A soil measurement guidance device comprising the above.

8. The terminal device further has a processing unit, The processing unit, Obtains first position information representing the position of the terminal device from the position sensor, Obtains the second position information of the target point from a storage unit in which second position information representing the position of the point where the soil condition is measured and soil information representing the soil condition are stored, Based on the first position information and the second position information, the direction of the target point as seen from the terminal device and the distance between the terminal device and the target point are displayed on the display unit. The soil measurement guidance device according to claim 7.

9. A soil measurement guidance method using a terminal device having a display unit, comprising: Obtaining first position information representing the position of the terminal device; Obtaining the second position information of the target point from a storage unit in which second position information representing the position of the point where the soil condition is measured and soil information representing the soil condition are stored; Based on the first position information and the second position information, displaying on the display unit the direction of the target point as seen from the terminal device and the distance between the terminal device and the target point. A soil measurement guidance method including the above.

10. A first user moves to the target point where the direction and the distance are displayed on the display unit and builds a predetermined object at the target point. A second user different from the first user moves to an object installation point which is the point where the predetermined object is built and obtains soil information representing the soil condition at the object installation point. The method further includes the second user recovering the predetermined object from the object installation point. The soil measurement guidance method according to claim 9.

11. The method further includes storing in the storage unit the identification information assigned to the predetermined object and the soil information at the object installation point. The soil measurement guidance method according to claim 10.

12. The second position information of the target location and the identification information assigned to the predetermined object are associated with each other. Associating the soil information of the object installation location with the second position information of the target location as the soil information of the target location via the identification information of the predetermined object. Further including storing the second position information and the soil information of the target location, which are associated with each other, in the storage unit. The soil measurement guidance method according to claim 11.

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