JP6924542B2 - Information acquisition device and information management system - Google Patents

Description

The present invention relates to an information acquisition device and an information management system.

Patent Document 1 describes the density of work machine information because the storage capacity of the storage unit is finite in a system in which operation information of a work machine such as a forklift or a hydraulic shovel is sampled and stored as work machine data in the storage unit. It is disclosed that the sampling interval when sampling the operation information is increased when the recording time is desired to be increased at the expense of.

Japanese Unexamined Patent Publication No. 2014-177816

The above-mentioned Patent Document 1 does not disclose changing the sampling interval when storing the work machine data in the storage unit based on the position of the work machine.
An object of the present invention is that it is possible to switch the sampling interval when storing the position information of the work vehicle in the storage unit in consideration of whether the work vehicle is located in the field or outside the field. It is to provide an information acquisition device and an information management system.

In one embodiment of the present invention, a detection unit that detects position information indicating the position of a work vehicle by using a satellite positioning system and information acquisition that samples the position information detected by the detection unit and stores it in a storage unit. The information acquisition processing unit, including the processing unit, determines whether the work vehicle is located in the field or outside the field based on the position information detected by the detection unit, and determines the determination. In consideration of the result, an information acquisition device is provided which is configured to be able to switch the sampling interval when sampling the position information.

In this configuration, it is possible to switch the sampling interval when storing the position information of the work vehicle in the storage unit in consideration of whether the work vehicle is located in the field or outside the field.
In one embodiment of the present invention, the information acquisition processing unit determines whether the key switch of the work vehicle is in the key-on state or the key-off state, and samples the position information in consideration of the determination result. It is configured so that the sampling interval can be switched.

In this configuration, in addition to whether the work vehicle is located in the field or outside the field, whether the key switch of the work vehicle is in the key-on state or the key-off state is also taken into consideration. It is possible to switch the sampling interval when storing the position information in the storage unit.
In one embodiment of the present invention, when the key switch is determined to be in the key-on state, the information acquisition processing unit determines whether the work vehicle is moving or stopped, and determines that determination. In consideration of the result, the sampling interval when sampling the position information can be switched.

In this configuration, in addition to whether the work vehicle is located inside or outside the field and whether the work vehicle's key switch is in the key-on or key-off state, the key switch is in the key-on state. When the determination is made, it is possible to switch the sampling interval when storing the position information of the work vehicle in the storage unit in consideration of whether the work vehicle is moving or stopped.

In one embodiment of the present invention, the information acquisition processing unit considers the determination result of whether the work vehicle is moving or stopped, and performs the operation information of the work vehicle together with the position information. It is configured so that it can be selected whether or not to store it in the storage unit.
In this configuration, it is possible to select whether or not to store the operation information of the work vehicle in the storage unit together with the position information in consideration of whether the work vehicle is moving or stopped.

In one embodiment of the present invention, the information acquisition processing unit determines whether the work vehicle is moving or stopped, and also considers the determination result when sampling the position information. The sampling interval can be switched.
In this configuration, in addition to whether the work vehicle is located in the field or outside the field, the position information of the work vehicle is provided in consideration of whether the work vehicle is moving or stopped. It is possible to switch the sampling interval when storing in the storage unit.

One embodiment of the present invention includes a communication terminal provided on the work vehicle side and a management server capable of communicating with the communication terminal, and the communication terminal uses a satellite positioning system to determine the position of the work vehicle. The management server includes a detection unit that detects the position information to be represented, and a first information acquisition processing unit that acquires work vehicle side information including at least the position information detected by the detection unit and transmits the information to the server. The information temporary storage processing unit that receives the work vehicle side information transmitted from the terminal device and temporarily stores it in the memory, and at least the position information in the work vehicle side information stored in the memory is sampled and stored. The second information acquisition processing unit includes a second information acquisition processing unit stored in the unit, and the second information acquisition processing unit positions the work vehicle in the field based on the position information in the work vehicle side information stored in the memory. An information management system configured to determine whether the information is located outside the field or to switch the sampling interval when sampling at least the position information in the work vehicle side information in consideration of the determination result. To provide .

In this configuration, the management server is in the work vehicle side information in consideration of the determination result of whether the work vehicle is located in the field or outside the field based on the work vehicle side information received from the communication terminal. It is possible to switch the sampling interval when at least the position information of the above is stored in the storage unit.
In one embodiment of the present invention, the work vehicle side information includes at least the position information and key-on-off information indicating whether the key switch of the work vehicle is in the key-on state or the key-off state. The second information acquisition processing unit determines whether the key switch is in the key-on state or the key-off state based on the key-on-off information in the work vehicle side information stored in the memory, and also determines the determination result. In consideration of this, the sampling interval when sampling at least the position information in the work vehicle side information can be switched.

In this configuration, the management server uses the work vehicle key based on the work vehicle side information received from the communication terminal in addition to the above-mentioned determination result of whether the work vehicle is located in the field or outside the field. It is possible to switch the sampling interval when at least the position information in the work vehicle side information is stored in the storage unit in consideration of the determination result of whether the switch is in the key-on state or the key-off state.

In one embodiment of the present invention, when the key switch is determined to be in the key-on state, the second information acquisition processing unit is based on the position information in the work vehicle side information stored in the memory. It is configured so that it is possible to determine whether the work vehicle is moving or stopped, and to switch the sampling interval when sampling at least the position information in the work vehicle side information in consideration of the determination result. ing.

In this configuration, the management server determines whether the above-mentioned work vehicle is located in the field or outside the field, and determines whether the key switch of the work vehicle is in the key-on state or the key-off state. In addition, when it is determined that the key switch is in the key-on state, the determination result of whether the work vehicle is moving or stopped based on the work vehicle side information received from the communication terminal is also taken into consideration. Then, it becomes possible to switch the sampling interval when at least the position information in the work vehicle side information is stored in the storage unit.

In one embodiment of the present invention, the work vehicle side information includes at least the position information and the operation information of the work vehicle including the key-on-off information, and the second information acquisition processing unit performs the work. Considering the determination result of whether the vehicle is moving or stopped, it is possible to select whether or not at least a part of the operation information of the work vehicle is stored in the storage unit together with the position information. Has been done.

In this configuration, the management server considers the determination result of whether the work vehicle is moving or stopped based on the work vehicle side information received from the communication terminal, and considers at least a part of the operation information of the work vehicle. It is possible to select whether or not to store the image in the storage unit together with the position information.
In one embodiment of the present invention, the second information acquisition processing unit determines whether the work vehicle is moving or stopped based on the position information in the work vehicle side information stored in the memory. It is configured so that the sampling interval at the time of sampling at least the position information in the work vehicle side information can be switched in consideration of the discrimination and the discrimination result.

In this configuration, the management server moves the work vehicle based on the work vehicle side information received from the communication terminal in addition to the above-mentioned determination result of whether the work vehicle is located in the field or outside the field. It is possible to switch the sampling interval when at least the position information in the work vehicle side information is stored in the storage unit in consideration of the determination result of whether the vehicle is in or stopped.

FIG. 1 is a schematic diagram showing the configuration of an information management system. FIG. 2 is a side view showing a tractor and a working machine attached to the tractor, and shows a state in which the working machine is in a non-working state. FIG. 3 is a plan view of the tractor and the working machine. FIG. 4 is a side view showing a tractor and a working machine, showing how the working machine is in a working state. FIG. 5 is a block diagram showing the electrical configuration of the tractor and the management server. FIG. 6 is a schematic diagram showing an example of sampling control information. FIG. 7 is a flowchart for explaining the operation of the information acquisition processing unit of the communication terminal. FIG. 8 is a block diagram showing the electrical configuration of the tractor and the management server. FIG. 9 is a flowchart for explaining the operation of the first information acquisition processing unit of the communication terminal. FIG. 10 is a flowchart showing the operation of the information temporary storage processing unit of the management server. FIG. 11A is a part of a flowchart showing the operation of the second information acquisition processing unit of the management server. FIG. 11B is a part of a flowchart showing the operation of the second information acquisition processing unit of the management server.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
First, the first embodiment of the present invention will be described.
FIG. 1 is a schematic diagram showing the configuration of an information management system.
The information management system 1 includes a communication terminal 2 mounted on a tractor 11 as a work vehicle and a management server 3. The communication terminal 2 can communicate with the management server 3 via the communication network 5.

The communication terminal 2 has a function of positioning the position of the tractor 11 by using the positioning satellite 6. The communication terminal 2 transmits the work vehicle side information including at least the position information to the management server 3. The management server 3 is provided in the management center 4. The management server 3 receives the work vehicle side information transmitted from the communication terminal 2. The management server 3 stores the received work vehicle side information in the storage unit.

FIG. 2 is a side view showing the tractor 11 and the working machine 13 mounted on the tractor 11 and showing how the working machine 13 is in a non-working state. FIG. 3 is a plan view of the tractor 11 and the working machine 13. FIG. 4 is a side view showing the tractor 11 and the working machine 13 and showing how the working machine 13 is in a working state.
The tractor 11 includes a traveling machine body 12 as a vehicle body portion that travels in the field. Various working machines such as a cultivator, a plow, a fertilizer applicator, a mower, and a sowing machine can be selected and mounted on the traveling machine body 12. In the present embodiment, a rotary cultivator is attached as the working machine 13.

As shown in FIG. 2, the traveling body 12 of the tractor 11 is supported by a pair of left and right front wheels 17 and a rear portion supported by a pair of left and right rear wheels 18.
A bonnet 19 is arranged at the front portion of the traveling machine body 12. In the present embodiment, the engine 20, the fuel tank (not shown), and the like, which are the drive sources of the tractor 11, are housed in the bonnet 19. The engine 20 can be configured by, for example, a diesel engine, but is not limited to this, and may be configured by, for example, a gasoline engine. Further, as a drive source, an electric motor may be adopted instead of or in addition to the engine 20.

Behind the bonnet 19, a cabin 21 for the user to board is arranged. Inside the cabin 21, there are a steering wheel 22 for the user to steer, a seat 23 for the user to sit on, a communication terminal 2, a key switch 24 for starting the engine (see FIG. 5), and various operations. Various operation devices and the like for performing the above are arranged. The communication terminal 2 is detachably attached to a terminal support portion 16 fixed to the lower surface of the roof 15 of the cabin 21. The key switch 24 is one that inserts a key into a so-called key cylinder and emits an electric signal (key-on signal and key-off signal) by a rotational operation, and emits an electric signal when certified by using an electronic key equipped with an immobilizer. It is possible to apply a thing or a thing that emits an electric signal by a push button. The tractor 11 is not limited to the one with the cabin 21, and may have a configuration without the cabin 21.

As shown in FIG. 2, a chassis 30 of the tractor 11 is provided in the lower part of the traveling machine body 12. The chassis 30 is composed of an airframe frame 31, a transmission 32, a front axle 33, a rear axle 34, and the like.
The airframe frame 31 is a support portion at the front portion of the tractor 11, and supports the engine 20 directly or via a vibration isolator or the like. The transmission 32 changes the power from the engine 20 and transmits it to the front axle 33 and the rear axle 34. The front axle 33 transmits the power input from the transmission 32 to the front wheels 17. The rear axle 34 transmits the power input from the transmission 32 to the rear wheels 18.

As shown in FIG. 2, a working machine 13 is mounted on the rear portion of the traveling machine body 12 of the tractor 11. By transmitting a part of the driving force of the engine 20 to the working machine 13 via a PTO shaft (not shown), the working machine 13 can be driven and the tilling work can be performed. A plurality of tilling claws (working bodies) 35 that are rotationally driven around a horizontally arranged shaft 35c are provided in the lower portion of the working machine 13.

By lowering the working machine 13 to the working height shown in FIG. 4, the rotating tilling claw 35 comes into contact with the soil, and the field can be cultivated at a predetermined depth corresponding to the working height. Further, the tilling work can be stopped by stopping the rotation of the tilling claw 35 or raising the working machine 13 to the non-working height shown in FIG.
FIG. 5 is a block diagram showing an electrical configuration of the tractor 11 and the management server 3.

The tractor 11 includes a tractor control device 10 and a communication terminal 2 mounted on the tractor 11. The tractor control device 10 controls the operation of the traveling machine body 12 (movements such as forward movement, reverse movement, stop, turning, etc.) and the movement of the work machine 13 (movements such as raising / lowering, driving, stopping, etc.). In the tractor control device 10, in addition to the key switch 24, a plurality of controllers (not shown) for controlling each part of the tractor 11 are electrically connected. The plurality of controllers control the engine controller that controls the rotation speed of the engine 20, the vehicle speed controller that controls the vehicle speed of the tractor 11, the steering controller that controls the steering angle of the front wheels 17 of the tractor 11, and the raising and lowering of the work equipment 13. Includes an elevating controller, a PTO axis controller that controls the rotation of the PTO axis, and the like.

The tractor control device 10 gives operation information to the communication terminal 2 at predetermined time intervals. The operation information includes key on / off information, engine speed, exhaust temperature, accelerator operation state, brake operation state, and the like. The key on / off information is information indicating whether the key switch 24 of the tractor 11 is in the on state or the off state.
The communication terminal 2 includes a control unit 40. A position detection unit 51, a communication unit 52, an operation display unit 53, an operation unit 54, a storage unit 55, and the like are connected to the control unit 40. The position detection unit 51 calculates the position information of the tractor 11 (communication terminal 2) based on the satellite positioning system. The satellite positioning system is, for example, GNSS (Global Navigation Satellite System). Specifically, the position detection unit 51 receives satellite signals from a plurality of positioning satellites 6 (see FIG. 1) and detects the position information of the tractor 11. The position information consists of, for example, latitude, longitude and altitude information.

The communication unit 52 is a communication interface for the control unit 40 to communicate with the management server 3 via the communication network 5 (see FIG. 1). The operation display unit 53 includes, for example, a touch panel display. The operation unit 54 includes, for example, one or a plurality of operation buttons. The storage unit 55 is composed of a storage device such as a non-volatile memory.
The control unit 40 includes a microcomputer provided with a CPU and a memory (ROM, RAM, etc.) 41. The control unit 40 includes an information acquisition processing unit 42. The information acquisition processing unit 42 samples the work vehicle side information including at least the position information among the position information calculated by the position detection unit 51 and the operation information given by the tractor control device 10, and stores it in the storage unit 55. , Performs information acquisition processing for transmission to the management server 3. When the information acquisition processing unit 42 samples and stores the work vehicle side information in the storage unit 55, the information acquisition processing unit 42 stores the information in which the sampling time is added to the work vehicle side information in the storage unit 55. In this first embodiment, the information acquisition processing unit 42 transmits the information stored in the storage unit 55 to the management server 3 in real time. The details of the information acquisition processing unit 42 will be described later.

The storage unit 55 is provided with a time-series information storage unit 56, a field position information storage unit 57, a sampling control information storage unit 58, and the like. The time-series information storage unit 56 stores work vehicle side information sampled by the information acquisition processing unit 42.
The field position information storage unit 57 contains position information (hereinafter referred to as “field position information”) for identifying a field area where work using the tractor 11 (cultivation work in this example) may be performed. It will be remembered. The sampling control information storage unit 58 stores control information (hereinafter, referred to as “sampling control information”) regarding the sampling interval and the sampling target (information to be sampled) when the information acquisition processing unit 42 samples the information on the work vehicle side. Will be done. The field position information and sampling control information are set by the management server 3. It is assumed that the field position information storage unit 57 and the sampling control information storage unit 58 store the field position information and the sampling control information set by the management server 3.

FIG. 6 is a schematic diagram showing an example of sampling control information.
In this example, the key switch 24 of the tractor 11 is in the on state (key-on state) or off state (key-off state), whether the tractor 11 is located in the field or outside the field, and the tractor. The states of the tractor 11 are divided into six types, states 1 to 6, depending on whether the tractor 11 is moving or stopped. Then, the sampling interval and the sampling target are set for each of the six types of states 1 to 6.

In FIG. 6, ON is a key-on state, OFF is a key-off state, the tractor 11 is located outside the field outside the field, and the tractor 11 is located inside the field inside the field. Indicates that the tractor 11 is stopped, and indicates that the tractor 11 is moving during the movement.
The state 1 is a state in which the key switch 24 of the tractor 11 is on, the tractor 11 is located outside the field, and the tractor 11 is stopped. The state 2 is a state in which the key switch 24 of the tractor 11 is on, the tractor 11 is located outside the field, and the tractor 11 is moving.

The state 3 is a state in which the key switch 24 of the tractor 11 is on, the tractor 11 is located in the field, and the tractor 11 is stopped. The state 4 is a state in which the key switch 24 of the tractor 11 is on, the tractor 11 is located in the field, and the tractor 11 is moving.
The state 5 is a state in which the key switch 24 of the tractor 11 is off and the tractor 11 is located outside the field. The state 6 is a state in which the key switch 24 of the tractor 11 is off and the tractor 11 is located in the field.

In FIG. 6, when the state of the tractor 11 (tractor state) corresponds to the state 1, the sampling interval is set to 60 minutes, and the sampling target is set to the position information. When the tractor state corresponds to the state 2, the sampling interval is set to 1 minute, and the sampling target is set to the position information and the engine speed (engine speed in the operation information).

When the tractor state corresponds to the state 3, the sampling interval is set to 5 minutes, and the sampling target is set to the position information. When the state of the tractor 11 corresponds to the state 4, the sampling interval is set to 10 seconds, and the sampling target is set to the position information and the operation information (all operation information).
When the state of the tractor 11 corresponds to the state 5, the sampling interval is set to 90 minutes, and the sampling target is set to the position information. When the state of the tractor 11 corresponds to the state 6, the sampling interval is set to 30 minutes, and the sampling target is set to the position information.

That is, in the example of FIG. 6, the sampling interval is set shorter in the key-on state than in the key-off state. Further, when the tractor 11 is located in the field, the sampling interval is set shorter than when the tractor 11 is located outside the field. Further, in the key-on state, when the tractor 11 is moving, the sampling interval is set shorter than when the tractor 11 is stopped. Further, in the key-on state, when the tractor 11 is moving, there are more types of sampling targets than when the tractor 11 is stopped.

The field position information and the sampling control information (hereinafter, collectively referred to as “field position / sampling control information”) are set on the management server 3 side. As will be described later, when the content of the field position / sampling control information is changed on the management server 3 side, the information acquisition processing unit 42 downloads the field position / sampling control information after the setting change. The contents of the field position information storage unit 57 and the sampling control information storage unit 58 are updated.

Returning to FIG. 5, the management server 3 includes a control unit 60. A communication unit 71, an operation display unit 72, an operation unit 73, a storage unit 74, and the like are connected to the control unit 60. The communication unit 71 is a communication interface for the control unit 60 to communicate with the communication terminal 2 via the communication network 5. The operation display unit 72 includes, for example, a touch panel display. The operation unit 73 includes, for example, a keyboard, a mouse, and the like. The storage unit 74 is composed of a storage device such as a hard disk and a non-volatile memory.

The storage unit 74 is provided with a time-series information storage unit 75, a field position information storage unit 76, and a sampling control information storage unit 77. The time-series information storage unit 58 stores the work vehicle side information received from the communication terminal 2. The field position information storage unit 76 stores the above-mentioned field position information. The sampling control information storage unit 77 stores the sampling control information described above.

The control unit 60 includes a microcomputer provided with a CPU and a memory (ROM, RAM, etc.) 61. The control unit 60 includes an information management unit 62. When the information management unit 62 receives the time-series information from the communication terminal 2, the information management unit 62 stores the received time-series information in the time-series information storage unit 75.
Hereinafter, the operation of the information acquisition processing unit 42 in the control unit 40 of the communication terminal 2 will be described in detail.

FIG. 7 is a flowchart for explaining the operation of the information acquisition processing unit 42 of the communication terminal 2.
In this embodiment, the information acquisition processing unit 42 executes the information acquisition process not only when the key switch 24 of the tractor 11 is in the on state but also when the key switch 24 is in the off state. Further, it is assumed that the sampling control information storage unit 58 in the storage unit 55 stores the sampling control information shown in FIG.

The information acquisition processing unit 42 first determines whether the key switch 24 is in the on state or the off state (step S1). When it is determined that the key switch 24 is in the off state (step S1: NO), the information acquisition processing unit 42 proceeds to step S2. In step S2, the information acquisition processing unit 42 acquires the position information of the tractor 11 from the position detection unit 51, and the tractor 11 uses the acquired position information and the field position information in the field position information storage unit 57. Determine if it is located in the field.

When it is determined that the tractor 11 is located outside the field (step S2: NO), the information acquisition processing unit 42 performs sampling corresponding to the state 5 (see FIG. 6) in the sampling control information storage unit 58. Sampling processing is performed according to the control information (step S3). Specifically, the information acquisition processing unit 42 samples the sampling target corresponding to the state 5 at the sampling interval corresponding to the state 5, and stores it in the time series information storage unit 56. In the example of FIG. 6, the information acquisition processing unit 42 samples only the position information detected by the position detection unit 51 at a sampling interval of 90 minutes and stores it in the time series information storage unit 56.

Then, the information acquisition processing unit 42 transmits the untransmitted information in the time-series information storage unit 56 to the management server 3 (step S4). The untransmitted information is information that has not been transmitted to the management server 3. As a result, the work vehicle side information stored in the time-series information storage unit 56 is transmitted to the management server 3. After that, the information acquisition processing unit 42 returns to step S1.
When it is determined in step S2 that the tractor 11 is located in the field (step S2: YES), the information acquisition processing unit 42 is in the state 6 in the sampling control information storage unit 58 (see FIG. 6). Sampling processing is performed according to the sampling control information corresponding to (step S5). Specifically, the information acquisition processing unit 42 samples the sampling target corresponding to the state 6 at the sampling interval corresponding to the state 6, and stores it in the time series information storage unit 56. In the example of FIG. 6, the information acquisition processing unit 42 samples only the position information at a sampling interval of 30 minutes and stores it in the time series information storage unit 56.

Then, the information acquisition processing unit 42 transmits the untransmitted information in the time-series information storage unit 56 to the management server 3 (step S4), and then returns to step S1.
When it is determined in step S1 that the key switch 24 is in the ON state (step S1: YES), the information acquisition processing unit 42 communicates with the management server 3 to obtain the contents of the field position / sampling control information. Checks whether or not the setting has been changed (step S6).

When the content of the field position / sampling control information has been changed (step S6: YES), the information acquisition processing unit 42 downloads the field position / sampling control information after the setting change and stores the field position information. It is stored in the unit 57 and the sampling control information storage unit 58 (step S7). As a result, the field position / sampling control information is updated. Here, for convenience of explanation, it is assumed that the updated sampling control information is also the information shown in FIG. After that, the information acquisition processing unit 42 shifts to step S8.

If it is determined in step S6 that the contents of the field position / sampling control information have not been changed (step S6: NO), the information acquisition processing unit 42 proceeds to step S8.
In step S8, the information acquisition processing unit 42 acquires the position information of the tractor 11 from the position detection unit 51, and the tractor 11 obtains the position information based on the acquired position information and the field position information in the field position information storage unit 57. Determine if it is located in the field.

When it is determined that the tractor 11 is located outside the field (step S8: NO), the information acquisition processing unit 42 uses the position information (current position information) acquired in this step S8 and the previous step. Based on the position information (previous position information) acquired in S8, it is determined whether or not the tractor 11 is moving (step S9). Specifically, the information acquisition processing unit 42 determines that the tractor 11 is moving if the distance between the tractor position obtained from the previous position information and the tractor position obtained from the current position information is equal to or greater than a predetermined threshold value. If the distance is less than the threshold value, it is determined that the tractor 11 is stopped.

When it is determined that the tractor 11 is stopped (step S9: NO), the information acquisition processing unit 42 obtains the sampling control information corresponding to the state 1 (see FIG. 6) in the sampling control information storage unit 58. Therefore, sampling processing is performed (step S10). Specifically, the information acquisition processing unit 42 samples the sampling target corresponding to the state 1 at the sampling interval corresponding to the state 1 and stores it in the time series information storage unit 56. In the example of FIG. 6, the information acquisition processing unit 42 samples only the position information at a sampling interval of 60 minutes and stores it in the time series information storage unit 56.

Then, the information acquisition processing unit 42 transmits the untransmitted information in the time-series information storage unit 56 to the management server 3 (step S4), and then returns to step S1.
When it is determined in step S9 that the tractor 11 is moving (step S9: YES), the information acquisition processing unit 42 corresponds to the state 2 (see FIG. 6) in the sampling control information storage unit 58. Sampling processing is performed according to the sampling control information (step S11). Specifically, the information acquisition processing unit 42 samples the sampling target corresponding to the state 2 at the sampling interval corresponding to the state 2, and stores it in the time series information storage unit 56. In the example of FIG. 6, the information acquisition processing unit 42 samples the position information and the engine speed in the operation information at a sampling interval of 1 minute and stores them in the time series information storage unit 56.

Then, the information acquisition processing unit 42 transmits the untransmitted information in the time-series information storage unit 56 to the management server 3 (step S4), and then returns to step S1.
When it is determined in step S8 that the tractor 11 is located in the field (step S8: YES), the information acquisition processing unit 42 uses the position information acquired in this step S8 and the previous step S8. Based on the position information acquired in step 2, it is determined whether or not the tractor 11 is moving (step S12).

When it is determined that the tractor 11 is stopped (step S12: NO), the information acquisition processing unit 42 obtains sampling control information corresponding to the state 3 (see FIG. 6) in the sampling control information storage unit 58. Therefore, sampling processing is performed (step S13). Specifically, the information acquisition processing unit 42 samples the sampling target corresponding to the state 3 at the sampling interval corresponding to the state 3 and stores it in the time series information storage unit 56. In the example of FIG. 6, the information acquisition processing unit 42 samples only the position information at a sampling interval of 5 minutes and stores it in the time series information storage unit 56.

Then, the information acquisition processing unit 42 transmits the untransmitted information in the time-series information storage unit 56 to the management server 3 (step S4), and then returns to step S1.
When it is determined in step S12 that the tractor 11 is moving (step S12: YES), the information acquisition processing unit 42 corresponds to the state 4 (see FIG. 6) in the sampling control information storage unit 58. Sampling processing is performed according to the sampling control information (step S14). Specifically, the information acquisition processing unit 42 samples the sampling target corresponding to the state 4 in the sampling control information storage unit 58 at the sampling interval corresponding to the state 4, and stores it in the time series information storage unit 56. In the example of FIG. 6, the information acquisition processing unit 42 samples the position information and all the operation information at a sampling interval of 10 seconds and stores them in the time series information storage unit 56.

Then, the information acquisition processing unit 42 transmits the untransmitted information in the time-series information storage unit 56 to the management server 3 (step S4), and then returns to step S1.
In the first embodiment described above, the sampling control information shown in FIG. 6 is shown as an example of the sampling control information, but the sampling control information is not limited to that shown in FIG. 6, and can be arbitrarily set.

In the first embodiment described above, the tractor 11 is located in the field for the sampling interval and the sampling target when the information acquisition processing unit 42 samples the work vehicle side information and stores it in the time series information storage unit 56. It is possible to switch depending on whether it is located outside the field. The work vehicle side information in the first embodiment is information including at least the position information among the position information and the operation information of the tractor 11.

Further, in the first embodiment described above, the information acquisition processing unit 42 takes into consideration whether the key switch 24 of the tractor 11 is in the on state or the off state, and sampling when sampling the work vehicle side information. It is possible to switch the interval and sampling target. Further, in the first embodiment described above, when the key switch 24 of the tractor 11 is in the ON state, the work vehicle side information is sampled in consideration of whether the tractor 11 is moving or stopped. It is possible to switch the sampling interval and the sampling target when performing.

That is, in the above-mentioned first embodiment, the sampling interval and the sampling target when the work vehicle side information is sampled and stored in the time series information storage unit 56 can be switched according to the state of the tractor 11. This makes it possible to sample a sampling target that is highly necessary according to the state of the tractor 11 at an appropriate sampling interval according to the state of the tractor 11.

In the above-described first embodiment, the information acquisition processing unit 42 transmits the work vehicle side information stored in the time-series information storage unit 56 to the management server 3 in real time, but stores it in the time-series information storage unit 56. The information may be transmitted to the management server 3 at regular transmission intervals. In this case, as shown by a chain line in FIG. 5, a transmission interval storage unit 78 for storing transmission interval information is provided in the storage unit 74 of the management server 3, and transmission is also performed in the storage unit 55 of the communication terminal 2. A transmission interval storage unit 59 for storing interval information is provided. The transmission interval information is set by the management server 3 and stored in the transmission interval storage unit 78. In this case, in step S6 of FIG. 7, the information acquisition processing unit 42 communicates with the management server 3 to provide information including field position information, sampling control information, and transmission interval (hereinafter, “download target information”). Check if the contents of) have been changed. Then, when the contents of the download target information have been changed, the information acquisition processing unit 42 downloads the download target information after the setting change, and the field position information storage unit 57 and the sampling control information storage unit. The contents of 58 and the transmission interval storage unit 59 are updated.

Further, in this case, as shown by the chain line in FIG. 7, the information acquisition processing unit 42 has not transmitted in the storage unit 55 after the processing of steps S3, S5, S10, S11, S13 or S14 is performed. It is determined whether or not a time equal to or longer than the transmission interval has elapsed since the last time the information was transmitted to the management server 3 (step S15). When the time equal to or longer than the transmission interval has elapsed (step S15: YES), the information acquisition processing unit 42 transmits the untransmitted information in the time-series information storage unit 56 to the management server 3 (step S4). Then, the information acquisition processing unit 42 returns to step S1. If it is determined in step S15 that the time equal to or longer than the transmission interval has not elapsed, the information acquisition processing unit 42 does not transmit the untransmitted information in the time-series information storage unit 56 to the management server 3. Return to step S1.

In the above-described first embodiment, the information acquisition processing unit 42 executes the information acquisition process not only when the key switch 24 of the tractor 11 is in the on state but also when the key switch 24 is in the off state. .. However, the information acquisition processing unit 42 may execute the information acquisition processing only when the key switch 24 of the tractor 11 is in the ON state. In this case, steps S1, S2, S3 and S5 of FIG. 7 are omitted. When the key switch 24 of the tractor 11 is turned on, the information acquisition processing unit 42 proceeds to step S6. Further, the information acquisition processing unit 42 returns to step S6 after executing the process of step S4.

In the first embodiment described above, the information acquisition processing unit 42 of the communication terminal 2 samples the work vehicle side information and stores it in the storage unit 55, but the information acquisition processing unit 42 samples the work vehicle side information. Then, it may be stored in the memory 41.
Next, a second embodiment of the present invention will be described.
The configuration of the information management system 1 is the same as that of the first embodiment. That is, as shown in FIG. 1, the information management system 1 includes a communication terminal 2 mounted on the tractor 11 as a work vehicle and a management server 3. The configuration of the tractor 11 is the same as that of the first embodiment. As shown in FIGS. 2 to 4, the tractor 11 is equipped with a rotary cultivator as a working machine 13.

FIG. 8 is a block diagram showing an electrical configuration of the tractor 11 and the management server 3. In FIG. 8, the portions corresponding to the respective parts of FIG. 4 described above are designated by the same reference numerals as those in FIG.
Similar to the first embodiment, the tractor 11 includes a tractor control device 10 and a communication terminal 2 mounted on the tractor 11. The tractor control device 10 gives operation information to the communication terminal 2 at predetermined time intervals. The operation information includes key on / off information, engine speed, exhaust temperature, accelerator operation state, brake operation state, and the like. The key on / off information is information indicating whether the key switch 24 of the tractor 11 is in the on state or the off state.

The communication terminal 2 includes a control unit 40. Similar to the first embodiment, the control unit 40 is connected to the position detection unit 51, the communication unit 52, the operation display unit 53, the operation unit 54, the storage unit 55, and the like. The control unit 40 includes a microcomputer provided with a CPU and a memory (ROM, RAM, etc.) 41. The control unit 40 includes a first information acquisition processing unit 42A.
The first information acquisition processing unit 42A samples the work vehicle side information including the position information detected by the position detection unit 51 and the operation information given by the tractor control device 10, stores it in the storage unit 55, and stores it in the management server 3. Performs information acquisition processing for transmission. The definition of "work vehicle side information" in the second embodiment is different from the definition of "work vehicle side information" in the first embodiment. When the information acquisition processing unit 42 samples and stores the position information and the operation information in the storage unit 55, the information acquisition processing unit 42 stores the information in which the sampling time is added to the position information and the operation information in the storage unit 55. The operation of the first information acquisition processing unit 42A of the second embodiment is different from the operation of the information acquisition processing unit 42 of the first embodiment.

When the key switch 24 of the tractor 11 is in the ON state, the first information acquisition processing unit 42A samples the work vehicle side information at the first sampling interval and stores it in the storage unit 55, and in real time in the management server 3. Send with. On the other hand, when the key switch 24 of the tractor 11 is in the off state, the first information acquisition processing unit 42A samples the work vehicle side information at the second sampling interval and stores it in the storage unit 55, and the management server 3 Send in real time to.

In this embodiment, the first sampling interval is set to 10 seconds and the second sampling interval is set to 5 minutes. The first sampling interval is preferably set to a shorter time than the second sampling interval, but these sampling intervals can be set arbitrarily.
The storage unit 55 is provided with a time-series information storage unit 56A, a sampling interval storage unit 56B, and the like. The time-series information storage unit 56A stores the work vehicle side information sampled by the first information acquisition processing unit 42A. The sampling interval storage unit 56B stores the above-mentioned first sampling interval and second sampling interval.

The management server 3 includes a control unit 60. Similar to the first embodiment, the control unit 60 is connected to the communication unit 71, the operation display unit 72, the operation unit 73, the storage unit 74, and the like.
The control unit 60 includes a microcomputer provided with a CPU and a memory (ROM, RAM, etc.) 61. The control unit 60 includes an information temporary storage processing unit 62A and a second information acquisition processing unit 62B. The information temporary storage processing unit 62A temporarily stores the work vehicle side information (position information and operation information for each time) received from the communication terminal 2 in a memory (specifically, RAM as a work memory) 61. Performs information temporary storage processing. The second information acquisition processing unit 62B samples the work vehicle side information stored in the memory every time the work vehicle side information for a predetermined time (for example, one day) is stored in the memory 61, and the storage unit 74. Performs information acquisition processing for storage in.

The storage unit 74 is provided with a time-series information storage unit 75, a field position information storage unit 76, a sampling control information storage unit 77, and the like. The time-series information storage unit 75 stores the work vehicle side information sampled by the second information acquisition processing unit 62B.
The field position information storage unit 76 contains position information (hereinafter referred to as “field position information”) for identifying a field area where work using the tractor 11 (cultivation work in this example) may be performed. It will be remembered. The sampling control information storage unit 77 stores control information (hereinafter, referred to as “sampling control information”) regarding a sampling interval and a sampling target (information to be sampled) when information is sampled by the second information acquisition processing unit 62B. NS. An example of sampling control information is shown in FIG. 6 described above.

Hereinafter, the operation of the first information acquisition processing unit 42A of the communication terminal 2, the operation of the information temporary storage processing unit 62A of the management server 3, and the operation of the second information acquisition processing unit 62B of the management server 3 will be described in detail.
FIG. 9 is a flowchart for explaining the operation of the first information acquisition processing unit 42A of the communication terminal 2.

The first information acquisition processing unit 42A first reads the first sampling interval and the second sampling interval stored in the sampling interval storage unit 56B into a memory (specifically, a RAM as a working memory) (step S21).
Next, the first information acquisition processing unit 42A acquires the key-on-off information from the tractor control device 10, and based on the acquired key-on-off information, whether the key switch 24 of the tractor 11 is in the on state or the off state. Is determined (step S22).

When the key switch 24 of the tractor 11 is in the ON state (step S22: YES), the first information acquisition processing unit 42A shifts to step S23. In step S23, the first information acquisition processing unit 42A samples the work vehicle side information (position information and operation information detected by the position detection unit 51) at the first sampling interval (10 seconds in this example). It is stored in the time-series information storage unit 56A and simultaneously transmitted to the management server 3. Then, the first information acquisition processing unit 42A returns to step S22.

If it is determined in step S22 that the key switch 24 of the tractor 11 is in the off state (step S22: NO), the first information acquisition processing unit 42A shifts to step S24. In step S24, the first information acquisition processing unit 42A samples the work vehicle side information (position information and operation information) at the second sampling interval (5 minutes in this example) and stores it in the time series information storage unit 56A. At the same time, it is transmitted to the management server 3. Then, the first information acquisition processing unit 42A returns to step S22.

FIG. 10 is a flowchart showing the operation of the information temporary storage processing unit 62A of the management server 3.
The information temporary storage processing unit 62A waits for the work vehicle side information (position information and operation information for each time) to be transmitted from the communication terminal 2 (step S31). When the work vehicle side information is transmitted from the communication terminal 2 (step S31: YES), the information temporary storage processing unit 62A receives the transmitted work vehicle side information and receives a memory (specifically, a work memory). (RAM as) (step S32). Then, the information temporary storage processing unit 62A returns to step S31.

11A and 11B are flowcharts showing the operation of the second information acquisition processing unit 62B of the management server 3.
It is assumed that the sampling control information storage unit 77 in the storage unit 74 stores the sampling control information shown in FIG.
The second information acquisition processing unit 62B determines whether or not it is the timing to start the information acquisition process (step S41). This determination may be performed, for example, by determining whether or not a predetermined time has elapsed from the start time of the previous information acquisition process, or whether or not the current time has reached a preset time. It may be done by discriminating.

Here, for convenience of explanation, the second information acquisition processing unit 62B determines whether or not the current time has reached a preset time (for example, midnight), and the current time reaches the preset time. When this is done, it is determined that it is time to start the information acquisition process. Further, as will be described later, when the information acquisition process is completed, the time series information stored in the memory before the time when the information acquisition process is started is deleted.

If it is determined that it is not the timing to start the information acquisition process (step S41: NO), the second information acquisition process unit 62B returns to step S41. If it is determined in step S41 that it is time to start the information acquisition process (step S41: YES), the second information acquisition processing unit 62B shifts to step S42.
In step S42, the work vehicle side information included in the processing target data is set as the processing target data, which is the time series information consisting of the work vehicle side information stored in the memory during the period from the time when the previous information acquisition process was started to the present. Of these, the information on the work vehicle side with the earliest time is set as attention data (step S42). In the following, the time corresponding to the attention data may be referred to as the attention time.

Next, the second information acquisition processing unit 62B determines whether the key switch 24 is in the on state or the off state based on the key on / off information in the attention data (step S43). When it is determined that the key switch 24 is in the off state (step S43: NO), the second information acquisition processing unit 62B proceeds to step S44. In step S44, the second information acquisition processing unit 62B determines whether the tractor 11 was located in the field at the time of attention based on the position information in the attention data and the field position information in the field position information storage unit 76. Determine if not.

When it is determined that the tractor 11 is located outside the field at the attention time (step S44: NO), the second information acquisition processing unit 62B sets the state 5 (see FIG. 6) to the tractor at the attention time this time. As the state of 11, the predetermined area in the memory 61 (hereinafter, this predetermined area may be referred to as a “time / state storage area”) is stored (step S45).
Next, the second information acquisition processing unit 62B determines whether or not the work vehicle side information whose time is later than the attention data exists in the processing target data (step S46). When the work vehicle side information at a time later than the attention data exists in the data to be processed (step S46: YES), the second information acquisition processing unit 62B performs the work at the time next to the attention data. The vehicle side information is set as attention data (step S47). Then, the process returns to step S43.

When it is determined in step S44 that the tractor 11 is located in the field (step S44: YES), the second information acquisition processing unit 62B sets the state 6 (see FIG. 6) at the time of interest this time. The state of the tractor 11 is stored in the time / state storage area in the memory 61 (step S48).
Next, the second information acquisition processing unit 62B determines whether or not the work vehicle side information whose time is later than the attention data exists in the processing target data (step S46). When the work vehicle side information at a time later than the attention data exists in the data to be processed (step S46: YES), the second information acquisition processing unit 62B performs the work at the time next to the attention data. The vehicle side information is set as attention data (step S47). Then, the process returns to step S43.

If it is determined in step S43 that the key switch 24 is in the ON state (step S43: YES), the second information acquisition processing unit 62B proceeds to step S49. In step S49, the second information acquisition processing unit 62B determines whether the tractor 11 was located in the field at the time of attention based on the position information in the attention data and the field position information in the field position information storage unit 76. Determine if not.

When it is determined that the tractor 11 is located outside the field at the time of interest (step S49: NO), the second information acquisition processing unit 62B receives the position information (current position information) in the current attention data and Based on the position information (previous position information) in the previous attention data, it is determined whether or not the tractor 11 is moving at the attention time (step S50). Specifically, the second information acquisition processing unit 62B sets the tractor 11 at the time of interest if the distance between the tractor position obtained from the previous position information and the tractor position obtained from the current position information is equal to or greater than a predetermined threshold value. Is moving, and if the distance is less than the threshold value, it is determined that the tractor 11 is stopped.

When it is determined that the tractor 11 has been stopped (step S50: NO), the second information acquisition processing unit 62B sets the state 1 (see FIG. 6) as the state of the tractor 11 at the time of interest this time. It is stored in the time / state storage area in the memory 61 (step S51).
Next, the second information acquisition processing unit 62B determines whether or not the work vehicle side information whose time is later than the attention data exists in the processing target data (step S46). When the work vehicle side information at a time later than the attention data exists in the data to be processed (step S46: YES), the second information acquisition processing unit 62B performs the work at the time next to the attention data. The vehicle side information is set as attention data (step S47). Then, the process returns to step S43.

When it is determined in step S50 that the tractor 11 is moving (step S50: YES), the second information acquisition processing unit 62B sets the state 2 (see FIG. 6) to the state of the tractor 11 at the time of interest. As a result, it is stored in the time / state storage area in the memory 61 (step S52).
Next, the second information acquisition processing unit 62B determines whether or not the work vehicle side information whose time is later than the attention data exists in the processing target data (step S46). When the work vehicle side information at a time later than the attention data exists in the data to be processed (step S46: YES), the second information acquisition processing unit 62B performs the work at the time next to the attention data. The vehicle side information is set as attention data (step S47). Then, the process returns to step S43.

When it is determined in step S49 that the tractor 11 is located in the field (step S49: YES), the second information acquisition processing unit 62B and the position information (current position information) in the current attention data Based on the position information (previous position information) in the previous attention data, it is determined whether or not the tractor 11 is moving at the attention time (step S53).

When it is determined that the tractor 11 has been stopped (step S53: NO), the second information acquisition processing unit 62B sets the state 3 (see FIG. 6) as the state of the tractor 11 at the time of interest this time. It is stored in the time / state storage area in the memory 61 (step S54).
Next, the second information acquisition processing unit 62B determines whether or not the work vehicle side information whose time is later than the attention data exists in the processing target data (step S46). When the work vehicle side information at a time later than the attention data exists in the data to be processed (step S46: YES), the second information acquisition processing unit 62B performs the work at the time next to the attention data. The vehicle side information is set as attention data (step S47). Then, the process returns to step S43.

When it is determined in step S53 that the tractor 11 is moving (step S53: YES), the second information acquisition processing unit 62B sets the state 4 (see FIG. 6) to the tractor 11 at the time of interest this time. Is stored in the time / state storage area in the memory 61 (step S55).
Next, the second information acquisition processing unit 62B determines whether or not the work vehicle side information whose time is later than the attention data exists in the processing target data (step S46). When the work vehicle side information at a time later than the attention data exists in the data to be processed (step S46: YES), the second information acquisition processing unit 62B performs the work at the time next to the attention data. The vehicle side information is set as attention data (step S47). Then, the process returns to step S43.

In step S46, when it is determined that the work vehicle side information at a time later than the attention data does not exist in the data to be processed (step S46: NO), the second information acquisition processing unit 62B The process proceeds to step S56. In step S56, the second information acquisition processing unit 62B performs the state (states 1 to 1) of the tractor 11 for each time stored in the time / state storage area in the memory 61 by steps S45, S48, S51, S52, S54 or S55. Based on 6) and the sampling control information in the sampling control information storage unit 77, the work vehicle side information in the processing target data is sampled and stored in the time series information storage unit 75.

Specifically, the second information acquisition processing unit 62B sets the time from the earliest time to the latest time of the work vehicle side information (time series information) included in the processing target data in the same tractor state in time. It is divided into a plurality of time zones by summarizing the period during which the period is performed as one time zone. Then, the second information acquisition processing unit 62B sets the second information acquisition processing unit 62B according to the sampling information (sampling target and sampling period) corresponding to the tractor states (states 1 to 6) assigned to each divided time zone. The work vehicle side information within the divided time zone is sampled and stored in the time series information storage unit 75.

After that, the second information acquisition processing unit 62B erases the data to be processed this time in the memory (step S57). Then, the second information acquisition processing unit 62B returns to step S41.
In the second embodiment described above, the information temporary storage processing unit 62A of the management server 3 temporarily stores the work vehicle side information including the position information and the operation information transmitted from the communication terminal 2 in the memory. Then, the second information acquisition processing unit 62B of the management server 3 samples the work vehicle side information temporarily stored in the memory and stores it in the time series information storage unit 76.

The second information acquisition processing unit 62B samples the work vehicle side information in the memory in consideration of the determination result of whether the tractor 11 is in the field or out of the field based on the work vehicle side information in the memory. It is possible to switch the sampling interval and sampling target. Further, the second information acquisition processing unit 62B considers the determination result of whether the key switch 24 of the tractor 11 is in the on state or the off state based on the work vehicle side information in the memory, and performs the work in the memory. It is possible to switch the sampling interval and sampling target when sampling the vehicle side information. Further, in the second embodiment described above, the work vehicle side information in the memory is obtained in consideration of the determination result of whether the tractor 11 is moving or stopped based on the work vehicle side information in the memory. It is possible to switch the sampling interval and sampling target when sampling.

That is, in the second embodiment described above, the state of the tractor 11 is determined from the work vehicle side information in the memory, and the work vehicle side information in the memory is sampled according to the determined state of the tractor 11. It is possible to switch the sampling interval and the sampling target when storing in the sequence information storage unit 75. This makes it possible to sample a sampling target that is highly necessary according to the state of the tractor 11 at an appropriate sampling interval according to the state of the tractor 11.

In the second embodiment described above, the first information acquisition processing unit 42A samples the work vehicle side information not only when the key switch 24 of the tractor 11 is in the on state but also when the key switch 24 is in the off state. And send it to the management server 4. However, the first information acquisition processing unit 42A may sample the work vehicle side information and transmit it to the management server 4 only when the key switch 24 of the tractor 11 is in the ON state. The sampling interval in this case is set to, for example, 10 seconds. In this case, steps S43, S44, S45 and S48 of FIG. 11 are omitted. Then, when the second information acquisition processing unit 62B of the management server 3 performs the process of step S42, the process proceeds to step S49.

Although the embodiments of the present invention have been described above, the present invention can also be implemented in other embodiments. For example, in the above-described embodiment, the GNSS independent positioning system is used as the positioning system used in the communication terminal 2, but other than the independent positioning system such as RTK-GNSS (real-time kinematic GNSS). A positioning system may be used.

In the above-described embodiment, the work vehicle is a tractor, but the work vehicle may be a rice transplanter, a combine harvester, a civil engineering / construction work device, a snowplow, a riding type work machine, a walking type work machine, or the like.
In addition, various design changes can be made within the scope of the matters described in the claims.

1 Information management system 2 Communication terminal 3 Management server 10 Tractor control device 11 Tractor (work vehicle)
40 Control unit 41 Memory 42 Information acquisition processing unit 42A First information acquisition processing unit 51 Position detection unit 52 Communication unit 55 Storage unit 56 Time-series information storage unit 57 Field position information storage unit 58 Sampling control information storage unit 60 Control unit 61 Memory 62 Information management unit 62A Information temporary storage processing unit 62B Second information acquisition processing unit 75 Time-series information storage unit 76 Field position information storage unit 77 Sampling control information storage unit

Claims (10)

A detector that detects position information that represents the position of a work vehicle using a satellite positioning system,
Including an information acquisition processing unit that samples the position information detected by the detection unit and stores it in the storage unit.
The information acquisition processing unit determines whether the work vehicle is located in the field or outside the field based on the position information detected by the detection unit, and the vehicle is located in the field. When it is determined that the vehicle is located outside the field, the sampling interval can be switched so that the sampling interval when sampling the position information is shorter than when it is determined that the vehicle is located outside the field. Information acquisition device configured in. The information acquisition processing unit determines whether the key switch of the work vehicle is in the key-on state or the key-off state, and when it is determined that the key switch is in the key-on state, the key switch is in the key-off state. The information acquisition device according to claim 1 , wherein the sampling interval can be switched so that the sampling interval when sampling the position information is shorter than when it is determined to be present. When the key switch is determined to be in the key-on state, the information acquisition processing unit determines whether the work vehicle is moving or stopped, and determines that the work vehicle is moving. When this is done, the sampling interval can be switched so that the sampling interval when sampling the position information is shorter than when it is determined that the work vehicle is stopped. The information acquisition device according to claim 2. When the information acquisition processing unit determines that the work vehicle is moving, the information acquisition processing unit stores the operation information of the work vehicle in the storage unit together with the position information, but the work vehicle is stopped. The information acquisition device according to claim 3, wherein the operation information of the work vehicle is not stored in the storage unit together with the position information when the determination is made. The information acquisition processing unit determines whether the work vehicle is moving or stopped, and when it is determined that the work vehicle is moving, it determines that the work vehicle is stopped. The information acquisition device according to claim 1 , wherein the sampling interval can be switched so that the sampling interval when sampling the position information is shorter than that in the case of the above. The communication terminal provided on the work vehicle side and
Including a management server capable of communicating with the communication terminal
The communication terminal is
A detection unit that detects position information indicating the position of the work vehicle using a satellite positioning system,
It includes a first information acquisition processing unit that acquires work vehicle side information including at least position information detected by the detection unit and transmits it to the management server.
The management server
An information temporary storage processing unit that receives work vehicle side information transmitted from the communication terminal and temporarily stores it in a memory.
Including a second information acquisition processing unit that samples at least position information in the work vehicle side information stored in the memory and stores it in the storage unit.
The second information acquisition processing unit determines whether the work vehicle is located in the field or outside the field based on the position information in the work vehicle side information stored in the memory. When it is determined that the vehicle is located in the field, the sampling interval when sampling the position information is shorter than when it is determined that the vehicle is located outside the field. An information management system configured to be able to switch the sampling interval. The work vehicle side information includes at least the position information and key-on-off information indicating whether the key switch of the work vehicle is in the key-on state or the key-off state.
Said second information acquisition processing unit, on the basis of the key-off information in the work vehicle-side information stored in the memory, the key switch is determined whether a key-off state or a key-on state, the key switch When it is determined that the key switch is in the key-off state, the sampling interval can be switched so that the sampling interval when sampling the position information is shorter than when the key switch is determined to be in the key-off state. The information management system according to claim 6, which is configured in the above. When the second information acquisition processing unit determines that the key switch is in the key-on state, the work vehicle is moving based on the position information in the work vehicle side information stored in the memory. When it is determined whether the work vehicle is moving or the work vehicle is moving, the position information is sampled as compared with the case where the work vehicle is determined to be stopped. The information management system according to claim 7 , wherein the sampling interval can be switched so that the sampling interval is shortened. The work vehicle side information includes at least the position information and the operation information of the work vehicle including the key-on-off information.
When it is determined that the work vehicle is moving, the second information acquisition processing unit stores the operation information of the work vehicle in the storage unit together with the position information, but the work vehicle is stopped. The information management system according to claim 8, wherein the operation information of the work vehicle is not stored in the storage unit together with the position information when it is determined to be. The second information acquisition processing unit determines whether the work vehicle is moving or stopped based on the position information in the work vehicle side information stored in the memory, and the work vehicle moves. When it is determined that the work vehicle is in the middle, the sampling interval can be switched so that the sampling interval when sampling the position information is shorter than when it is determined that the work vehicle is stopped. The information management system according to claim 6, which is configured.

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