JP6286250B2 - Work machine and communication system for work machine - Google Patents

Description

  The present invention relates to a working machine such as an agricultural machine such as a tractor, a combiner or a rice transplanter, a construction machine for a backhoe, and a communication system for the working machine.

In recent years, mobile terminals such as smartphones and tablets have become widespread. A technology for connecting such a portable terminal to a working machine that performs work by wireless communication and transmitting and receiving various data has been developed.
Patent Document 1 includes a communication processing unit that outputs a beacon and performs communication processing with a portable terminal, and a processing suspension unit that performs suspension processing to pause the communication processing unit, and performs communication between the work machine and the portable terminal. An access point device for a work machine for performing is disclosed.

Japanese Patent Application Laid-Open No. 2014-042508

  In Patent Literature 1, a mobile terminal receives an SSID output to the outside from an access point device mounted on a work machine, and the mobile terminal is connected to a predetermined access point device using this SSID as a key. . As described above, the data of the work implement can be acquired by connecting the portable terminal to the access point device. However, in order to acquire the data of the work implement, it is necessary to establish the connection between the mobile terminal and the access point device, and quickly acquire the state of the work implement, in particular, notification information to be notified to the outside from the work implement. It was sometimes difficult.

  SUMMARY OF THE INVENTION In view of the above problems, the present invention has an object to provide a work machine and a work machine communication system that can quickly and easily acquire notification information of the work machine.

The technical means of the present invention for solving this technical problem is characterized by the following points.
A communication system of a work machine for connecting an access point device connected to an in-vehicle network constructed in a work machine and a mobile terminal on an external network different from the in- vehicle network, the information output to the in-vehicle network And when the acquisition unit acquires notification information including at least one of the occurrence of trouble and the occurrence of material shortage, and the acquisition unit acquires the notification information, the notification information is transferred to the access point device. It includes an identifier setting unit for setting as an identification possible and the mobile terminal can acquire a communication identifier, a communication unit that transmits to the mobile terminal the communication identifier set in the identifier setting portion in the wireless communication .

Prior Symbol identifier setting unit, when the notification information indicates that the trouble occurs, the communication identifier is set as an identifier indicating that the trouble occurs, the communication unit, the communication identifier It transmits to the said portable terminal by radio | wireless communication, It is characterized by the above-mentioned .
When the communication identifier indicates that a trouble has occurred, the mobile terminal notifies the server that manages that a trouble has occurred in the work machine .

The identifier setting unit sets the communication identifier as an identifier indicating that the material is insufficient when the notification information indicates that the material used for work of the work machine is insufficient, and the communication unit Transmits the communication identifier to the mobile terminal .
The portable terminal displays that the material for the work implement is insufficient when the communication identifier indicates that the material is insufficient.

According to the present invention, since the notification information can be transmitted to the outside as a communication identifier that can be acquired by the mobile terminal , the notification information can be transmitted without establishing wireless communication between the mobile terminal and the communication unit. It can be acquired quickly.
Further, the mobile terminal can quickly grasp that a trouble has occurred in the work machine by receiving the communication identifier.

Moreover, the portable terminal can grasp | ascertain quickly that the material mounted in the working machine is insufficient by receiving a communication identifier.
Further, by using the access point device, it is possible to easily connect the work machine and the wireless terminal. In addition, when there is a notification from the work machine to the outside, the notification from the work machine can be easily obtained by transmitting a communication identifier from the access point device to the mobile terminal.

In addition, it is possible to quickly notify the server that a trouble has occurred from the mobile terminal.
In addition, it is possible to quickly grasp that the material is insufficient by looking at the mobile terminal.

It is a whole figure of the communication system of the working machine in 1st Embodiment. It is a flowchart which shows the flow which connects a portable terminal to an access point apparatus. It is a figure which shows an example of an error code. It is a figure which shows the relationship between a communication identifier and fertilizer loading. It is a general view of the communication system of the working machine in 2nd Embodiment. It is a figure which shows a trouble occurrence condition screen. It is a figure which shows an example which provided the 1st communication part, the 1st memory | storage part, etc. in the control apparatus. It is the whole tractor side view.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[First Embodiment]
FIG. 1 shows an overall view of a communication system for a work machine.
As shown in FIG. 1, a work machine communication system 1 includes a work machine access point device 4 mounted on a work machine 2 such as an agricultural machine or a construction machine, and wireless communication with the work machine access point device 4. It is a system provided with the portable terminal 3 to perform. In the work machine communication system 1, for example, the mobile terminal 3 acquires information on the work machine 2 via the work machine access point device 4 by connecting the mobile terminal 3 to the work machine access point device 4. can do. On the other hand, the work machine 2 can acquire various signals from the portable terminal 3 via the work machine access point device 4.

Hereinafter, the working machine is a tractor which is one of the agricultural machines, and the working machine communication system and the working machine access point device will be described in detail. For convenience of explanation, the explanation will be made by referring to the “work machine access point device” as “access point device”.
As shown in FIG. 8, the tractor 2 is configured by mounting an engine 11, a transmission 12, and the like on a traveling vehicle (traveling vehicle body) 10 having front and rear wheels. A three-point link mechanism 13 and the like are provided at the rear portion of the traveling vehicle 10 so as to be lifted and lowered. A working device 14 such as a tilling device, a fertilizer spraying device, a pesticide spraying device, a sowing spraying device, and a harvesting device is detachably attached to the three-point link mechanism 13. In addition, an independently mounted cabin 15 is provided behind the engine 11, and a driver's seat 16 is provided in the cabin 15. A display device 18 that displays various information of the tractor 2 is provided around the driver's seat 16.

  A plurality of electronic devices, that is, electrical components are mounted on the tractor 2. This electronic device is a device for operating the tractor 2, and includes, for example, a sensor (accelerator pedal sensor, lever detection sensor, crank position sensor, fuel sensor, water temperature sensor, etc.), switch (ignition switch, parking brake switch, PTO switch, etc.), a display device constituted by a display panel, a control device for controlling the tractor, a control device for controlling the work device 14, and the like. The plurality of electronic devices are connected to a communication line, and thereby, an in-vehicle network N1 is configured in the tractor 2. The in-vehicle network N1 is, for example, a CAN (Controller Area Network), a LIN (Local Interconnect Network), a FlexRay, or the like.

In the in-vehicle network N1, a detection signal detected by a sensor, a switch signal indicating a switch state, and an operation unit (for example, an engine, a solenoid valve, a pump, or the like) that operates the tractor 2 is operated by control of a control device. Command signals (control signals) and the like are output. In addition, a notification signal for notifying a warning or a failure is also output to the in-vehicle network N1.
FIG. 1 is a diagram illustrating a plurality of control devices, an in-vehicle network, and a work machine access point device.

  As shown in FIG. 1, the tractor 2 includes, as the control device 20, for example, a first control device 20 </ b> A that controls the engine 11, a second control device 20 </ b> B that controls the transmission 12 and the three-point link mechanism 13, A third control device 20C that controls the display device 18 is provided. The control devices 20 such as the first control device 20A, the second control device 20B, and the third control device 20C are connected to sensors, switches, and the like, and switches that indicate detection signals and switch states detected by the sensors. The signal is output to the in-vehicle network N1 via the control device 20.

  The first control device 20A includes, for example, an accelerator pedal sensor that detects an operation amount of an accelerator pedal when an accelerator pedal is operated, a lever detection sensor that detects a shift lever position when a shift lever for shifting is operated, and a crank position The engine speed and the like are controlled based on a signal from a crank position sensor or the like that detects this. The second control device 20B controls the lifting and lowering of the three-point link mechanism 13 based on a position lever sensor or the like that detects an operation amount of an operation member (operation lever) that operates the three-point link mechanism 13. The third control device 20C controls the display device 18 based on signals from sensors, switches, and the like. For example, the movement of a pointer meter provided in the display device 18, LED on / off, liquid crystal Controls the display of the display unit. The control of the first control device 20A, the second control device 20B, and the third control device 20C is not limited to that described above.

As shown in FIG. 1, the access point device 4 is a device that connects the in-vehicle network N <b> 1 of the tractor 2 and a network (external network) outside the tractor 2. The access point device 4 includes a first communication unit (communication module) 30 that performs wireless communication with the mobile terminal 3, a control unit 31 that controls the first communication unit 30, and a first storage unit 32. Yes.
The first communication unit 30 performs wireless communication based on Wi-Fi (registered trademark) conforming to the IEEE 802.11 series which is a communication standard. Specifically, the first communication unit 30 converts the data (signal) received from the outside into the communication method of the access point device 4 and outputs it to the control unit 31 or the data (signal) transmitted from the control unit 31. Change to the IEEE802.11 series communication method and output to the outside. That is, the first communication unit 30 outputs data (signal) received from the outside to the control unit 31 or transmits data (signal) output from the control unit 31 to the outside.

The control unit 31 converts the data received from the in-vehicle network N1 into the communication method of the access point device 4 and transmits the data received from the in-vehicle network N1 to the first communication unit 30. The operation of the control unit 31 is not limited to that described above.
The 1st memory | storage part 32 is comprised from the non-volatile memory. The first storage unit 32 stores communication setting information related to wireless communication connection and the like, and various operation information acquired from the tractor 1. Specifically, the first storage unit 32 has a unique MAC address set on the network, an identifier for identifying the access point device 4 (for example, a service set identifier, that is, SSID), an encryption key (network key). Etc. are stored as communication setting information. Moreover, the 1st memory | storage part 32 memorize | stores the detection signal, switch signal, command signal, etc. which were acquired via the vehicle-mounted network as operation information.

The mobile terminal 3 is configured by, for example, a smartphone (multifunctional mobile phone), a tablet PC, or the like having a relatively high computing capability. As shown in FIG. 1, the mobile terminal 3 includes a second communication unit (communication means) 40 and a second storage unit 41.
The second communication unit 40 includes at least a communication device that performs wireless communication with the access point device 4. The second communication unit 40 performs short-distance wireless communication with the access point device 4 using, for example, IEEE 802.11 series Wi-Fi (Wireless Fidelity, registered trademark) which is a communication standard.

  In addition to the short-range wireless communication, the second communication unit 40 may perform wireless communication with the server 5 or the like through a data communication network, a mobile phone communication network, or the like. Further, the mobile terminal 3 receives a signal (GPS satellite position, transmission time, correction information, etc.) transmitted from a positioning satellite (for example, GPS satellite), and based on the received signal (for example, latitude) , Longitude) may be included. When the position detection unit 42 is provided, the farm worker can detect the position (worker position) of the farm worker during the farm work by holding the mobile terminal 3 during the farm work.

The second storage unit 41 is configured by a nonvolatile memory or the like, and stores data such as operation information transmitted from the access point device 4. Alternatively, the second storage unit 41 stores the data transmitted from the server 5.
FIG. 2 is a flowchart for connecting the portable terminal to the access point apparatus. As shown in FIG. 2, for example, when the ignition switch of the tractor 2 is turned on, the access point device 4 is activated (S1), and the first communication unit 30 refers to the communication setting information in the first storage unit 32, A service set identifier (SSID) is output to the outside (S2). When the mobile terminal 3 receives the SSID transmitted from the first communication unit 30 to the outside (S3), the mobile terminal 3 displays the SSID on the display unit 43 configured by a liquid crystal panel or the like (S4), and also displays the network key on the display unit 43. Is displayed (S5). After the network key is input on the input screen of the portable terminal 3, the network key is transmitted from the portable terminal 3 to the access point device 4 (S6), and the network key transmitted from the portable terminal 3 to the access point device 4 is transmitted. When input, the first communication unit 30 or the control unit 31 collates (authenticates) the network key transmitted from the portable terminal 3 with the network key stored in the first storage unit 32 (S7). Here, when the network verification (authentication) is established, the first communication unit 30 or the control unit 31 permits data communication between them (S8). On the other hand, when collation between the network key from the portable terminal 3 and the network key stored in the first storage unit 32 is not established, the first communication unit 30 or the control unit 31 establishes wireless communication with the portable terminal 3. Data communication is not permitted. Note that the process of establishing wireless communication between the first communication unit 30 and the mobile terminal 3 is not limited to the above-described process, and the process of displaying the network key on the input screen may be omitted.

  As described above, when wireless communication between the access point device 4 and the portable terminal 3 is established, the operation information stored in the first storage unit 32 may be transmitted to the portable terminal 3 via the first communication unit 30. it can. The operation information acquired by the mobile terminal 3 is stored in the second storage unit 41. Moreover, the data of the portable terminal 3 can be transmitted to electronic devices such as the first communication unit 30, the control unit 31, and the control device 20.

  The operation information stored in the second storage unit 41 can be transmitted to the server 5 by the second communication unit 40 of the mobile terminal 3 through the mobile phone communication network or the data communication network. In the server 5, the operation information transmitted from the mobile terminal 3 is stored in the operation information database 6. The server 5 can organize and analyze the operation information using the operation information stored in the operation information database 6.

Now, as described above, the mobile terminal 3 can acquire data such as operation information of the work implement 2 by performing the connection process of connecting the mobile terminal 3 to the access point device 4, but the connection is not necessarily performed. Even without performing the processing, it is possible to acquire the data of the work machine 2, particularly the notification information from the work machine 2.
Hereinafter, data acquisition by a method that does not perform connection processing will be described.

The access point device 4 includes an acquisition unit 33 and an identifier setting unit 34. The acquisition unit 33 and the identifier setting unit 34 are configured by a program stored in the control unit 31.
The acquisition unit 33 acquires a notification signal among the operation information (detection signal, switch signal, command signal, notification signal) output to the in-vehicle network N1. The notification signal includes, for example, notification information for notifying that a trouble has occurred in the tractor 2 or notification information for notifying the shortage of materials mounted on the tractor 2. Note that the trouble refers to a failure or abnormality of an electrical component or a failure or abnormality of the work device 14. Hereinafter, for convenience of explanation, the information obtained from the notification signal will be referred to as notification information and will be described.

  The control device 20 mounted on the tractor 2 uses various signals (detection signal, switch signal, command signal, etc.) to detect a failure or abnormality of the electrical component, a failure or abnormality of the work device 14, or the like. Here, when a failure or abnormality of an electrical component, a failure or abnormality of the work device 14 or the like is detected (when occurrence of a trouble is detected), the control device 20 notifies a notification signal (notification that a trouble has occurred) Information) is output to the in-vehicle network N1. The acquisition unit 33 of the access point device 4 acquires the notification information output from the control device 20 via the in-vehicle network N1. When the acquisition unit 33 acquires notification information indicating that a trouble has occurred, the identifier setting unit 34 sets an error code or the like according to the content of the trouble as shown in FIG. Is set as a communication identifier that can be acquired. This communication identifier is, for example, a service set identifier (SSID), and the service set identifier includes an error code corresponding to the trouble.

For example, when the water temperature sensor indicates an abnormal value, the identifier setting unit 34 sets a communication identifier including an error code (2377) corresponding to the abnormality of the water temperature sensor, for example, “TRACTOR-2377” as the communication identifier.
When setting the communication identifier, the identifier setting unit 34 sets the character (TRAACTOR) in the front (before the hyphen) of the communication identifier as identification information that can specify the access point device 4 or the tractor 2. Then, the rear part following the identification information (TRAACTOR) is set to “2377” indicating that the water temperature sensor is abnormal. Thereby, the operator can grasp | ascertain from which access point apparatus 4 or the tractor 2 the communication identifier is transmitted by seeing the character shown by the front part of the communication identifier.

Then, after setting the communication identifier by the identifier setting unit 34, the set communication identifier, that is, “TRACTOR-2377” is transmitted to the outside by the first communication unit 30.
When the mobile terminal 3 receives the communication identifier transmitted from the access point device 4 (first communication unit 30), the mobile terminal 3 displays the communication identifier on the display unit 43. Alternatively, when the mobile terminal 3 receives the communication identifier, the mobile terminal 3 displays a message for the worker on the display unit 43 in response to the error code included in the communication identifier.

  As described above, the access point device 4 includes the acquisition unit 33 and the identifier setting unit 34. When the notification information indicates that a trouble has occurred, the identifier setting unit 34 has detected a communication identifier as a trouble. Since the first communication unit 30 is transmitting the communication identifier to the outside, the operator sees the communication identifier displayed on the mobile terminal 3 or a message corresponding to the communication identifier, It is possible to quickly grasp that a trouble has occurred in the tractor. In addition, as a method for transmitting information indicating that a trouble has occurred in the tractor 2 toward the mobile terminal 3, the content (error code) in which the trouble has occurred is represented by a service set identifier, and the service set identifier is transmitted to the mobile terminal 3. Therefore, it is not necessary to newly construct a system (apparatus) for transmitting the occurrence of the trouble to the outside, and the occurrence of the trouble can be easily transmitted to the mobile terminal 3. The communication identifier set by the identifier setting unit 34 is a service set identifier and can be transmitted to the outside as a broadcast signal, so that broadcast information can be transmitted over a wide range.

  In the above-described embodiment, the identifier setting unit 34 sets an error code or the like according to the content of the trouble. Instead, when the control device 20 detects the occurrence of the trouble, the control device 20 causes the trouble. An error code may be set according to the contents of the information, and this error code may be output to the in-vehicle network N1 as notification information. In this case, the identifier setting unit 34 sets a communication identifier using the error code transmitted from the control device 20. Also, instead of the error code being set by the control device 20 or the identifier setting unit 34 according to the content of the trouble, if a failure or an abnormality occurs in the electrical component or work device, the electrical component or work device itself generates an error. The code may be output as notification information.

  In the above-described embodiment, when trouble occurs in the tractor 2, the fact that the trouble has occurred has been transmitted to the outside as a communication identifier, but when the material used for the work of the tractor 2 is insufficient, The fact that the material is insufficient may be transmitted to the outside as a communication identifier. Here, the material is used for work performed by the tractor 2. For example, when the work device 14 attached to the tractor 2 is a fertilizer spraying device, an agricultural chemical spraying device, or a seeding spraying device, the material is fertilizer, Pesticides and seeds. In addition, when a working machine is not a tractor but a rice transplanter, it is a seedling transplanted by the rice transplanter.

Hereinafter, a case where a fertilizer spraying device is attached to the tractor 2 will be described as an example.
The fertilizer load in the fertilizer spreading device is detected by a control device, a sensor, or the like that controls the fertilizer spreading device, and is output to the in-vehicle network N1. When the fertilizer loading amount is insufficient based on the fertilizer loading amount output to the in-vehicle network N1, the control device 20 outputs the fact to the in-vehicle network N1 as notification information.

As shown in FIG. 4, at the time P1 when the fertilizer is filled in the fertilizer tank of the fertilizer spraying device, the notification information is not output from the control device 20 to the in-vehicle network N1. In this state, the identifier setting unit 34 does not set a communication identifier.
After that, when fertilizer is sprayed, and the fertilizer loading amount becomes 25% or less with respect to the total loading amount at the time point P2, the control device 20 displays the notification information indicating that the fertilizer loading amount is insufficient as the in-vehicle network N1 Output to. When the acquisition unit 33 receives notification information indicating that the fertilizer load is insufficient, the identifier setting unit 34 indicates that the fertilizer load is 25% or less according to the notification information (“TRACTOR− N10qtr "). The first communication unit 30 transmits “TRAACTOR-N10qtr”, which is the communication identifier after the change, to the outside. When receiving the communication identifier “TRACTOR-N10qtr”, the portable terminal 3 displays the communication identifier on the display unit 43. Alternatively, when the mobile terminal 3 receives the communication identifier “TRACTOR-N10qtr”, the display unit 43 displays, for example, a message directed to the worker “fertilizer is decreasing” corresponding to the communication identifier. To display.

  Further, when the application of the fertilizer proceeds and the acquisition unit 33 acquires the detection notification that the fertilizer load is lost at the time point P3, the identifier setting unit 34 indicates a communication identifier (for example, “TRACTOR” indicating that the fertilizer load is lost. The first communication unit 30 transmits “TRACTOR-N10E”, which is the communication identifier after the change, to the outside. The mobile terminal 3 receives “TRACTOR-N10E”, which is the communication identifier. Then, the communication identifier is displayed on the display unit 43. Alternatively, when the mobile terminal 3 receives the communication identifier “TRACTOR-N10E”, the message is directed to the worker, for example, corresponding to the communication identifier. “Fertilizer is gone” is displayed on the display unit 43. In addition, the fertilizer is replenished, and the fertilizer loading amount is 2 with respect to the total loading amount. It becomes more than%, identifier setting unit 34 resets the communication identifier, i.e., stops the transmission of the communication identifier set in accordance with the material shortage.

In the above-described embodiment, the message directed to the worker is displayed on the display unit 43. However, the message may be notified by voice, or may be notified by vibrating the portable terminal 3 in response to the message. Good.
As described above, the identifier setting unit 34 sets the communication identifier as an identifier indicating that the material is insufficient when the notification information indicates that the material is insufficient, and the first communication unit 30 sets the communication identifier to the external Is sending to. Therefore, on the portable terminal 3 side, the fertilizer load is simply displayed on the display unit 43 by displaying a communication identifier transmitted from the access point device 4 or a message corresponding to the communication identifier (for example, fertilizer is insufficient). It is possible to grasp what state is.

  For example, when spraying fertilizer, etc., the spraying operation is performed by an operator (operator) who operates the tractor 2 to spray fertilizer and an operator (assistant) who performs auxiliary work around the field. There is. In this case, since a communication identifier indicating that the amount of fertilizer loaded is reduced is displayed on the portable terminal 3 of the assistant, the assistant may perform the work of preparing the fertilizer before the fertilizer runs out. it can.

  Here, the case where it applies to a rice transplanter is demonstrated. When the rice transplanting operation is performed by the operator and the assistant, the assistant can recognize whether the seedling is insufficient or not from a remote location under a situation where the seedling mounting base of the rice transplanter is visible. If the rice transplanter makes a turn or the like and the seedling mounting table is not visible, it cannot be visually confirmed whether the seedling mounting table has insufficient seedlings. Even in such a case, when the seedling is insufficient, the communication identifier is displayed on the portable terminal 3 of the assistant, so that it is possible to grasp that the seedling is insufficient even if the seedling is not directly visible. it can.

In the above-described embodiment, the identifier setting unit 34 sets a code or the like according to the degree of material shortage. Instead, when the control device 20 detects a shortage of material, the control device 20 A code may be set according to the degree of material shortage, and this code may be output to the in-vehicle network N1 as notification information. In this case, the identifier setting unit 34 sets a communication identifier using the code transmitted from the control device 20. Further, instead of the control device 20 or the identifier setting unit 34 setting a code according to the degree of material shortage, the fertilizer spreading device may output a code according to the degree of material shortage as notification information.
[Second Embodiment]
2nd Embodiment shows the modification when a trouble generate | occur | produces in a working machine (tractor). A configuration different from the first embodiment will be described.

The server 5 in the second embodiment manages various data relating to maintenance and inspection of the work machine, and is installed in, for example, a service company (service center) that performs maintenance and check of the work machine.
When the mobile terminal 3 receives a communication identifier indicating that a trouble has occurred, the mobile terminal 3 transmits to the server 5 that the trouble has occurred. Specifically, when the mobile terminal 3 receives the communication identifier, the mobile terminal 3 transmits the communication identifier, the position detected by the position detection unit 42 (position information), and the identification information (terminal identification information) of the mobile terminal 3 to the server 5. . The server 5 stores the communication identifier, position information, and terminal identification information transmitted from the mobile terminal 3 in the management database 7 as shown in FIG. Note that the terminal identification information and worker information for identifying the worker (for example, the name of the worker, contact information, etc.) are associated in advance, and when the terminal identification information is obtained, the worker may be identified. it can. Further, the mobile terminal 3 may transmit worker information to the server 5 instead of the terminal identification information.

  The server 5 displays information (trouble information) at the time of trouble occurrence on the display unit (monitor) of the computer connected to the server 5. For example, trouble information is displayed on a display unit such as a personal computer (PC) installed in the service center. Specifically, as shown in FIG. 6, a trouble occurrence status screen Q1 is displayed on the display unit of the PC, and a terminal position G1 and terminal identification information obtained from the location information are displayed on a map M shown in the trouble occurrence status screen Q1. The worker information (for example, worker name) obtained from the above and the trouble content (for example, error code) obtained from the communication identifier are displayed.

  As described above, according to the second embodiment, for example, when some trouble occurs in the work machine 2, it is possible to notify the server 5 that manages that a trouble has occurred via the mobile terminal 3. Further, since the server 5 displays the trouble occurrence information on the display unit of the PC, the service person can quickly deal with the trouble. In the above-described embodiment, the trouble occurrence information is displayed on the PC of the service center. However, the trouble occurrence information may be displayed on the mobile terminal 3 logged into the server 5. According to this, the service person possessing the portable terminal 3 can quickly rush to the place where the trouble occurs.

In the embodiment described above, the mobile terminal 3 transmits the communication identifier, the position information, and the terminal identification information to the server 5, but in addition to this, even if the operation information acquired by the mobile terminal 3 is transmitted to the server 5. Good.
In the above-described embodiment, the notification information is represented by a communication identifier that is a service set identifier, and the communication identifier is transmitted to notify the mobile terminal 3 of the content to be notified. Identifier) and a communication identifier for data communication (second identifier) may be separately transmitted from the access point device 4. That is, the access point device 4 stores the second identifier for data communication, and when activated, the access point device 4 always transmits the second identifier regardless of the presence or absence of connection. Then, using the second identifier, wireless communication between the portable terminal 3 and the access point device 4 is established by the procedure shown in FIG. On the other hand, the access point device 4 transmits the first identifier for notification at the time when the notification is performed to the outside. According to this, in a situation where the mobile terminal 3 is connected to the access point device 4, the first identifier for notification is directed to the mobile terminal 3 without blocking the connection between the access point device 4 and the mobile terminal 3. Can be sent.

  In the above-described embodiment, the access point device 4 is mounted on the work machine 2, but the access point device 4 may be integrated with the work machine 2. That is, as shown in FIG. 7, among the control devices 20, for example, the first control device 20A is provided with a first communication unit 30, a control unit 31, a first storage unit 32, an acquisition unit 33, and an identifier setting unit 34. May be. The first communication unit 30, the control unit 31, the first storage unit 32, the acquisition unit 33, and the identifier setting unit 34 may be provided in the second control device 20B, the third control device 20C, or the like.

The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.
In the above-described embodiment, the notification signal (notification information) indicating “trouble is occurring” and the notification signal (notification information) indicating “material is insufficient” have been described. Anything transmitted from the work machine may be used. For example, in the combine, the notification information indicating that the bag has been discharged from the auger is transmitted from the access point device 4 mounted on the combine to the portable terminal 3 using the communication identifier. When the portable terminal 3 receives the communication identifier, the portable terminal 3 informs the operator that the jar has been discharged from the auger by sound, vibration such as display, voice, etc., and also displays an input screen for inputting the container number into which the jar is put. indicate. Moreover, the portable terminal 3 connects to the combine access point device 4, collects operation information (for example, moisture and protein measured by the combine), and associates the operation information with the container number input on the input screen. .

DESCRIPTION OF SYMBOLS 1 Communication system of working machine 2 Working machine 3 Portable terminal 4 Access point device for working machines 5 Server 6 Operation information database 7 Management database 10 Traveling vehicle 11 Engine 12 Transmission 13 Three-point link mechanism 14 Working device 15 Cabin 16 Driver's seat 18 Display device 20 Control device 20A First control device 20B Second control device 20C Third control device 30 First communication unit 31 Control unit 32 First storage unit 33 Acquisition unit 34 Identifier setting unit 40 Second communication unit 41 Second storage unit 42 Position detection unit 43 Display unit Q1 Trouble occurrence status screen

Claims (5)

A communication system of a work machine for connecting an access point device connected to an in- vehicle network constructed in a work machine and a mobile terminal on an external network different from the in-vehicle network ,
An acquisition unit that acquires information that is information output to the in-vehicle network and includes at least one of occurrence of trouble and occurrence of material shortage ;
When the acquisition unit acquires notification information, an identifier setting unit that sets the notification information as a communication identifier that can identify the access point device and can be acquired by the mobile terminal;
A communication unit that transmits the communication identifier set by the identifier setting unit to the mobile terminal by wireless communication;
A working machine communication system comprising: The identifier setting unit sets the communication identifier as an identifier indicating the occurrence of the trouble when the broadcast information indicates that a trouble has occurred, and the communication unit sets the communication identifier as a wireless The work machine communication system according to claim 1, wherein the work machine is transmitted to the portable terminal by communication.   The work device according to claim 2, wherein when the communication identifier indicates that a trouble has occurred, the portable terminal notifies a server that manages that a trouble has occurred in the work machine. Communications system. The identifier setting unit sets the communication identifier as an identifier indicating that the material is insufficient when the notification information indicates that the material used for work of the work machine is insufficient, and the communication unit The work machine communication system according to claim 1, wherein the communication identifier is transmitted to the mobile terminal .   5. The work machine communication system according to claim 4, wherein when the communication identifier indicates that the material is insufficient, the portable terminal displays that the material of the work machine is insufficient. .

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