JP6401002B2 - Work machine monitoring system - Google Patents

Description

  The present invention relates to a work machine monitoring system.

Conventionally, there is a technique shown in Patent Document 1 as a technique for monitoring a storage location of a vehicle.
In patent document 1, the line sensor which can detect a vehicle is installed in the doorway of the garage which is a storage place of a vehicle. In addition, during the alert of the storage location, the storage location is monitored by enabling the line sensor to detect an intruder who attempts to enter the storage location.

JP 2010-102611 A

  In Patent Document 1, in order to start monitoring the storage location, it is necessary to operate an operation panel or the like installed at the storage location after the vehicle is stopped at the storage location. In this case, if the operation panel is forgotten, there is a problem that the storage location cannot be monitored, that is, the vehicle cannot be monitored. Further, Patent Document 1 is intended for monitoring storage locations such as automobiles, and the actual situation is that a system for monitoring work machines or the like has not been developed yet.

  The present invention has been made to solve the above-described problems of the prior art, and an object thereof is to easily monitor a working machine.

In order to achieve the above-described object, the present invention takes the following technical means.
The work machine monitoring system is a communication device provided in the work machine, the first communication device having an output unit that outputs a beacon including status information indicating a state of the work machine as a broadcast signal, and the work machine And a second communication device that is installed around the storage location and that receives the beacon that is the broadcast signal transmitted from the first communication device by wireless communication. The communication device has a monitoring unit capable of outputting an alarm to the outside when there is a change in the status information of the beacon received as the broadcast signal after the start of monitoring.

The output unit outputs a beacon including an identifier capable of identifying the first communication device and the status information to the second communication device .
The first communication apparatus, one of the and the ignition switch that the ignition switch of the working machine is turned on is turned off to output the beacon as the status information, the monitoring unit, the ignition switch When status information indicating that the ignition switch is turned on is received from the state in which status information indicating that the ignition switch is turned off is received by the broadcast signal, an alarm is output to the outside.

The first communication apparatus, and status information when the working machine is not driven, so that the status information when the working machine is driven is distinguishable, signal change for changing the beacon by the presence or absence of the driving The monitoring unit outputs an alarm to the outside based on the beacon changed by the signal changing unit.
The monitoring unit outputs an alarm to the outside when the beacon cannot be received from the state in which the beacon is received.

  According to the present invention, it is possible to easily monitor a work machine.

It is the schematic of the monitoring system of a working machine. It is the figure which showed transition of SSID. It is a figure which shows an example of a change of SSID. It is a figure which shows operation | movement of the 1st communication apparatus during monitoring of a working machine, and operation | movement of a 2nd communication apparatus. It is a figure which shows the condition where a working machine leaves | separates from a storage place during monitoring. It is a figure which shows the other example of a change of SSID.

Hereinafter, a monitoring system for a work machine according to the present invention will be described with reference to the drawings as appropriate.
FIG. 1 is a schematic diagram of a work machine monitoring system.
The work machine monitoring system 1 is a system that monitors work machines such as construction machines (for example, backhoes) and agricultural machines (for example, tractors, combine harvesters, rice transplanters). As shown in FIG. 1, the monitoring system 1 includes a first communication device 2 and a second communication device 3.

The first communication device 2 is a device that is mounted on the work machine 4 and capable of wireless communication with the second communication device 3. The second communication device 3 is a portable mobile terminal, and includes, for example, a smart phone (multi-function mobile phone) or a tablet PC having a relatively high computing capability.
The second communication device 3 can be carried, but is accommodated in a storage box 5 installed in a storage place P where the working machine 4 is stored. Alternatively, the second communication device 3 is accommodated in a storage box 5 installed around the storage location P. The storage place P is, for example, a farmer's barn when the work machine 4 is an agricultural machine, and a warehouse when the work machine 4 is a construction machine. As a matter of course, the storage place P is not limited to the above-described example, and may be a place determined in advance for storing the work machine 4.

Hereinafter, the first communication device 2 and the second communication device 3 will be described in detail.
As shown in FIG. 2, the first communication device 2 is connected to an in-vehicle communication network provided in the work machine 4. The first communication device 2 includes an acquisition unit 11, a signal change unit 12, a first communication unit (output unit) 13, and a first storage unit 14. The acquisition unit 11 and the signal change unit 12 are configured by an electronic circuit, a program stored in the CPU, and the like.

  The acquisition unit 11 acquires information (sometimes referred to as status information) of the work machine 4 flowing in the in-vehicle communication network. For example, the acquisition unit 11 acquires values of sensors (accelerator pedal sensor, engine rotation detection sensor, crank position sensor, fuel sensor, water temperature sensor, vibration sensor, etc.) mounted on the work implement 4 as status information. In addition, the acquisition unit 11 uses status (ON, OFF) of a switch (ignition switch, parking brake switch, PTO switch, etc.) mounted on the work implement 4 as status information, or a CPU mounted on the work implement 4 or the like. The control signal of the control unit can be acquired. That is, the acquisition unit 11 acquires status information indicating the state of the work machine 4.

The signal changing unit 12 (information adding unit) adds the state (status information) of the work machine 4 acquired by the acquiring unit 11 to the beacon. Here, a beacon is a broadcast signal used in wireless communication between the second communication device 3 and the first communication device 2, and includes a service set identifier (SSID) and the like.
The signal changing unit 12 adds status information to the SSID. Hereinafter, for convenience of explanation, a predetermined SSID may be referred to as a “set SSID”, and an SSID to which status information is added may be referred to as a “changed SSID”.

FIG. 2 is a diagram showing the transition of the SSID.
As illustrated in FIG. 2, when the ignition switch (IG-SW) of the work machine 4 is changed from OFF (OFF) to ON (ON) at the time point P1, the acquisition unit 11 indicates that the ignition switch is turned on. Get key-on information that is status information. When the acquiring unit 11 acquires the key-on information, the signal changing unit 12 changes the changed SSID to “KUBOTA-010” by adding the key-on information to “KUBOTA” that is the set SSID. That is, the signal changing unit 12 adds “010” indicating that the ignition switch is turned on to the end of the set SSID. The symbol “-” shown between “KUBOTA” and “010”, which are set SSIDs, indicates a delimiter between the set SSID and newly added key-on information.

  Further, when the ignition switch (IG-SW) changes from on (ON) to off (OFF) at the time point P2, the acquisition unit 11 displays key-off information that is status information indicating that the ignition switch has been turned off. get. When the acquiring unit 11 acquires the key-off information, the signal changing unit 12 performs a process of returning the changed SSID (KUBOTA-010) to the set SSID (KUBOTA). Therefore, the signal changing unit 12 changes the SSID based on the status information indicating whether the ignition switch is on or off. In the above-described embodiment, the status information when the ignition switch is turned on or off has been described. However, as a matter of course, the present invention is not limited to this.

  In this invention, it is preferable that the signal change part 12 changes SSID based on the status information which can confirm a motion (drive) of the working machine 4. FIG. As shown in FIG. 3, for example, the SSID is changed based on status information indicating whether or not the engine is driven, whether or not the work device is driven, whether or not the work implement 4 is vibrated, whether or not the vehicle is traveling, and the like. Note that whether or not the engine is driven can be detected by the ignition switch, the engine rotation detection sensor, and the crank position sensor as described above. Whether or not the work machine 4 is driven can be detected by turning on or off the PTO switch of the work device. The presence or absence of vibration of the work machine 4 can be detected by a vibration sensor.

Therefore, according to the signal changing unit 12, it is possible to add status information that can recognize a change in driving of the work machine 4 to the set SSID.
In addition, when the signal changing unit 12 creates the changed SSID, characters or the like indicating status information (for example, 010, 011) are added to the end of the set SSID. It can be added anywhere. Further, the signal changing unit 12 may change the set SSID by a predetermined calculation formula or the like based on predetermined status information. Further, the relationship between the status information acquired by the acquisition unit 11 and the characters indicating the status information is stored in the first communication device 2 in advance, and the signal changing unit 12 creates a changed SSID using this relationship. .

  The first communication unit 13 performs wireless communication based on Wi-Fi (registered trademark) conforming to the IEEE 802.11 series which is a communication standard. The first communication unit 13 receives data (information) received from the second communication device 3 and outputs a beacon including an SSID (set SSID, changed SSID) to the second communication device 3. For example, when the set SSID is changed by the signal changing unit 12, the first communication unit 13 transmits a beacon including the changed SSID after the change to the outside, and the setting SSID is not changed by the signal changing unit 12. Transmits a beacon including the set SSID to the outside.

  The 1st memory | storage part 14 is comprised from the non-volatile memory. The first storage unit 14 can store communication information related to communication, status information, data for creating a changed SSID, and the like. The communication information is, for example, a unique MAC address set on the network, an identifier (set SSID, changed SSID) for identifying the first communication device 2, an encryption key (network key), and the like.

The second communication device 3 includes a second communication unit 17, a second storage unit 18, and a monitoring unit 19.
The second communication unit 17 can execute wireless communication based on Wi-Fi (registered trademark) conforming to the IEEE 802.11 series which is a communication standard. Moreover, the 2nd communication part 17 may be an apparatus which can communicate by a data communication network or a mobile telephone communication network.
The second storage unit 18 is composed of a nonvolatile memory or the like. The second storage unit 18 can store communication information and status information acquired from the first communication device 2. The communication information is, for example, a unique MAC address set on the network, an encryption key (network key), and report destination information (report destination email).

  The monitoring unit 19 is composed of an electronic circuit, a program, and the like, and monitors the work machine 4. Specifically, the monitoring unit 19 outputs an alarm to the outside when the state of the work implement 4 changes during monitoring (after the start of monitoring). For example, when the monitoring unit 19 starts from a state where the engine of the work machine 4 is stopped or detects movement from the state where the work machine 4 is stopped, the monitoring unit 19 outputs an alarm to the outside. Here, “starting from the state in which the engine of the work machine 4 is stopped”, “moving from the state in which the work machine 4 is stopped”, etc., as described above, from the first communication device 2 at a predetermined interval. It can be grasped by a broadcast signal output to the outside every time, that is, a beacon including an SSID.

The monitoring unit 19 is started by, for example, selecting a monitoring button displayed on the display unit of the second communication device 3. Note that it is preferable to start monitoring several tens of seconds after selecting the monitoring button.
As shown in FIG. 1, when the work or the like is finished, the worker moves the work machine 4 to the storage place P and stops the work machine 4 at the storage place P. In the storage place P, the drive of the work machine 4 is normally stopped. That is, when the work machine 4 is stored in the storage place P, the engine and the work device are not driven, and the work machine 4 is not vibrated.

  A storage box 5 for storing the second communication device 3 is installed around the storage location P and the storage location P where communication with the second communication device 3 can be seen from the first communication device 2. ing. As described above, after the work machine 4 is accommodated in the storage place P, the worker selects the monitoring button displayed on the display unit of the second communication device 3 and places the second communication device 3 in the accommodation box 5. Accommodate. In addition, an outlet for supplying electric power or the like is housed in the storage box 5, and the second communication device 3 can be charged by being connected to the outlet. Further, it is desirable that the storage box 5 is provided with a locking device.

  In this way, under the situation where the work machine 1 is stored in the storage location, as shown in FIG. 4, the first communication device 2 externally transmits a beacon including an SSID (set SSID, changed SSID) at a predetermined interval. Transmit to (second communication device 3) (S1). The first communication device 2 is in a state in which a beacon that is a broadcast signal is always transmitted to the outside regardless of the start and end of monitoring.

  On the other hand, the second communication device 3 accommodated in the accommodation box 5 can receive a beacon when the first communication device 2 exists at least in the storage location P. Therefore, the second communication device 3 receives the SSID transmitted from the first communication device 2 (S2). For example, since the drive of the work machine 4 is stopped at the storage location P, the second communication device 3 receives “KUBOTA” that is the set SSID.

  When the ignition switch of the work machine 4 is turned on under such a monitoring state, the first communication device 2 is a changed SSID including status information indicating that the ignition switch is turned on. KUBOTA-010 "is transmitted (S3). When the second communication device 3 receives the SSID of “KUBOTA-010” (S4), the monitoring unit 19 changes the ignition switch from OFF to ON during monitoring, that is, the state of the work machine 4 changes. It is detected (S5). Then, the monitoring unit 19 transmits an alarm to a predetermined report destination (S6). For example, the monitoring unit 19 transmits an alarm by e-mail or the like to the report destination. Note that the alarm may be transmitted by any method, and the alarm may be notified by sound or the alarm may be notified by light.

As described above, according to the present invention, the work implement 1 can be monitored only by receiving the beacon including the status information of the work implement 1 with the second communication device 3. For example, the work machine 1 is stored in the storage place, the drive of the work machine 1 is stopped, and the work machine 1 is watched only by installing the second communication device 3 around the storage place or the storage place. Can do.
In the embodiment described above, the monitoring unit 19 outputs an alarm to the outside based on the status information included in the beacon. Instead, during monitoring, when the second communication device 3 cannot receive a beacon from the situation in which the beacon is received, that is, the second communication device 3 can receive the SSID from the situation in which the SSID is received. When it disappears, the monitoring unit 19 may output an alarm to the outside.

  For example, as illustrated in FIG. 5, when the first communication device 2 is removed from the storage location P due to the work machine 4 moving from the storage location P during monitoring, the second communication device 3 performs the first communication. The SSID transmitted from the device 2 cannot be received. In response to the fact that the SSID cannot be received, the monitoring unit 19 transmits an alarm to the outside. In this way, it is possible to detect that the work machine 4 has left the storage location P even if it is attempted to steal without driving the work machine 4, that is, without starting the engine or the like. Therefore, the working machine 4 can be prevented from being stolen. 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 SSID is changed when the state of the work machine 1 becomes a predetermined state (for example, the ignition switch is turned on), but when the state of the work machine 1 changes. The SSID may be changed. For example, as shown in FIG. 6, when the engine is driven, when the engine is stopped from driving to start driving (when the status information is changed from no engine driving to driving), the changed SSID is set. The SSID may be changed as shown. Similarly, regarding the working device, when the working device is changed from the state where the driving is stopped to the start of driving, the SSID may be changed as shown in the changed SSID. Moreover, regarding the vibration of the work machine, when the vibration of the work machine changes from the state without vibration to the presence of vibration, the SSID may be changed as shown in the changed SSID.

  In the embodiment described above, the second communication device 3 is a portable terminal that can be carried. However, the second communication device 3 may be a communication device fixed in a storage place such as a barn or a warehouse, that is, a communication device that cannot be carried.

DESCRIPTION OF SYMBOLS 1 Monitoring system of work machine 2 1st communication apparatus 3 2nd communication apparatus 4 Work machine 11 Acquisition part 12 Signal change part 13 1st communication part 14 1st memory | storage part 17 2nd communication part 18 2nd memory | storage part 19 Monitoring part

Claims (5)

A communication device provided in the work machine, the first communication device having an output unit that outputs a beacon including status information indicating a state of the work machine as a broadcast signal ;
A second communication device that is installed in or around the storage location for storing the work implement, and that receives a beacon that is the broadcast signal transmitted from the first communication device by wireless communication;
With
The monitoring system of a work machine, wherein the second communication device has a monitoring unit capable of outputting an alarm to the outside when there is a change in status information of the beacon received as the broadcast signal after the start of monitoring. The work machine monitoring system according to claim 1, wherein the output unit outputs a beacon including an identifier capable of identifying the first communication device and the status information to the second communication device . The first communication device outputs, as the status information , the beacon that the ignition switch of the work machine is turned on or the ignition switch is turned off ,
When the monitoring unit receives status information indicating that the ignition switch is turned on from the state where the status information indicating that the ignition switch is turned off is received using the broadcast signal, The work machine monitoring system according to claim 1 , wherein an alarm is output to the outside. The first communication device changes a signal that changes a beacon depending on whether or not it is driven so that status information when the work machine is not driven can be distinguished from status information when the work machine is driven. Part
The work monitoring system according to claim 1, wherein the monitoring unit outputs an alarm to the outside based on the beacon changed by the signal changing unit.   The monitoring system for a work machine according to claim 1 or 2, wherein the monitoring unit outputs an alarm to the outside when the beacon cannot be received from a state where the beacon is received.

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