JP2018203168A - Working machine - Google Patents

Abstract

To make it possible to further improve anti-theft.SOLUTION: A working machine comprises: a motor; a work device which can be driven by power of the motor; a power storage device having a storage battery which can supply electric power to the motor, and a first storage part which stores first authentication information; and a control device having an authentification part which performs authentification based on first authentication information stored in the first storage part, and permits driving of the motor when said authentification is established. The power storage device can be freely attached to and detached from a vehicle body, and the authentification part acquires first authentification information from the first storage part of the power storage device which is installed onto the vehicle body, and executes authentification based on the acquired first authentification information.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a working machine capable of preventing theft, for example.

  Conventionally, a technique disclosed in Patent Document 1 is known as a technique for preventing the work machine from being stolen. The working machine of Patent Literature 1 drives the drive unit when collation is established by collating the storage unit that stores the authentication information with the stored authentication information stored in the storage unit and the manually input authentication information. A drive authentication unit that permits the display, a display unit that can display the drive state of the drive unit, and a display control unit that controls the display of the display unit, and the display control unit can display the drive state An authentication input screen for inputting the input authentication information is displayed.

JP-A-2015-131572

In the working machine of Patent Literature 1, by inputting the input authentication information to the display unit, the drive unit can be driven by collating the input authentication information with the stored authentication information. Although this work machine is a form in which input authentication information is input by an operator and is a useful technique for improving security, a more advanced technique for preventing the work machine from being stolen is required.
Then, an object of this invention is to provide the working machine which can improve antitheft more in view of the said subject.

The present invention employs the following technical means to achieve the above configuration.
The work machine includes a prime mover, a work device that can be driven by power of the prime mover, a storage battery that can supply the power to the prime mover, and a power storage device that includes a first storage unit that stores first authentication information; A control unit that performs authentication based on the first authentication information stored in the first storage unit and includes an authentication unit that permits driving of the prime mover when the authentication is established.

The power storage device is detachable from a vehicle body, and the authentication unit acquires the first authentication information from a first storage unit of a power storage device attached to the vehicle body, and based on the acquired first authentication information. To authenticate.
The work machine includes a second storage unit that stores second authentication information associated with the first authentication information, and the authentication unit stores the first authentication information stored in the first storage unit as the second authentication information. If it is associated with the second authentication information stored in the storage unit, it is determined that authentication has been established.

The authentication unit prohibits charging of the storage battery when the authentication is not established.
The prime mover is an electric motor, and the working device is a cutting blade device driven by power of the electric motor.

  According to the present invention, it is possible to further improve theft prevention.

It is a figure which shows the control system of a working machine. It is a figure which shows the relationship between 1st authentication information and 2nd authentication information. It is a schematic side view of a mower.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings as appropriate.
FIG. 1 shows an overall view of the work machine. The working machines are mowers, tractors, combiners, rice transplanters, backhoes, skid steer loaders, compact truck loaders, and the like. First, the working machine will be described using a mower as an example.
As shown in FIGS. 1 and 3, the mower 1 is a riding mower, for example, and includes a vehicle (vehicle body) 2, a travel device 3, a work device 4, and a prime mover 5. The traveling device 3 includes a front wheel 3F and a rear wheel 3R provided on the vehicle body 2. The work device 4 is a device that can be driven by the power of the prime mover 5, for example, a cutting device that is driven by the power of the prime mover 5 to cut grass. The working device 4 includes a rotary shaft 10 that is rotatably supported by the vehicle body 2 and the like, and a cutting blade (cutter) 11 provided on the rotary shaft 10. In this embodiment, the working device 4 is configured to include a plurality of rotating shafts 10 and a plurality of cutting blades 11 attached to each of the rotating shafts 10. In this embodiment, as shown in FIG. 1, the working device 4 includes three rotating shafts 10a, 10b, and 10c and three cutting blades 11a, 11b, and 11c. The working device 4 can be moved up and down with respect to the vehicle body 2 by, for example, a hydraulic actuator.

  The prime mover 5 is a machine that generates power and is an electric motor that is driven by at least electric power. The prime mover 5 may be a hybrid type having an internal combustion engine such as a gasoline engine or a diesel engine and an electric motor. The prime mover 5 includes a first electric motor 8 that transmits power to the traveling device 3 and a second electric motor 9 that transmits power to the work device 4.

The first electric motor 8 includes a left motor 8L that transmits power to the left rear wheel 3R, and a right motor 8R that transmits power to the right rear wheel 3R, and includes a left rear wheel 3R, The rear wheel 3R can be driven and rotated independently. The 2nd electric motor 9 is provided in each of rotating shaft 10a, 10b, 10c, and rotates rotating shaft 10a, 10b, 10c.
The mower 1 includes a power storage device 15 that can supply power to the prime mover 5. The power storage device 15 is provided at the rear part of the vehicle body 2. The power storage device 15 is detachable from the vehicle body 2. For example, it is possible to attach the power storage device 15 to the vehicle body 2 by providing the mounting portion 2b for mounting the power storage device 15 on the frame 2a at the rear of the vehicle body 2 and setting the power storage device 15 on the mounting portion 2b. is there. Further, by opening the bonnet provided at the rear portion of the vehicle body 2, the power storage device 15 placed on the placement portion 2 b can be removed outside the mower 1. The power storage device 15 may be configured to be detachable from the vehicle body 2, and the above-described attachment structure and attachment method are not limited.

  As illustrated in FIG. 1, the storage battery device 15 includes a storage battery 15 a that stores electric power, and a control unit 15 b that controls the storage battery 15 a. The storage battery 15 a supplies electric power to the first electric motor 8 (left motor 8 </ b> L, right motor 8 </ b> R) and the second electric motor 9 via the inverter 16 while being attached to the vehicle body 2. The control unit 15b includes a CPU, electrical / electronic components, and the like. That is, the control unit 15b includes a protection circuit, a charge / discharge control circuit, and the like, and controls discharge, charge, and the like of the storage battery 15a. For example, the control unit 15b stops discharging or charging when overcharge, overdischarge, overcurrent, or the like occurs in the storage battery 15a, and stops charging when the temperature is equal to or higher than a threshold value. Note that the control of the control unit 15b is not limited to the above-described example.

The mower 1 also includes a driver seat 17 provided on the vehicle body 2 and an operation member 18 provided in the vicinity of the driver seat 17. The operating member 18 includes a left steering lever 18a for steering the vehicle body 2 to the left, a right steering lever 18b for steering the vehicle body 2 to the right, a cutting operation lever 18c for operating the driving of the cutting blade 11, and the lifting and lowering of the work device 4. And an elevating lever 18d for operating.
FIG. 1 shows a control system in the mower 1.

  As shown in FIG. 1, the mower 1 includes a control device 20. The control device 20 is a device that controls the work device 4 and controls, for example, the three second electric motors 9. Specifically, a sensor 22a that detects the operation of the left steering lever 18a, a sensor 22b that detects the operation of the right steering lever 18b, and a sensor 22c that detects the operation of the cutting operation lever 18c are connected to the control device 20. Has been.

  When the operation of the left steering lever 18a is detected by the sensor 22a, the control device 20 outputs a control signal for driving the left motor 8L to the inverter 16 to drive the left motor 8L. When the operation of the right steering lever 18b is detected by the sensor 22b, a control signal for driving the right motor 8R is output to the inverter 16 to drive the right motor 8R. When the operation of the cutting operation lever 18c is detected by the sensor 22c, the control device 20 outputs a control signal for driving the second electric motor 9 to the inverter 16 to drive the second electric motor 9.

  Now, the electrical storage apparatus 15 has the 1st memory | storage part 15c other than the storage battery 15a and the control part 15b. The 1st memory | storage part 15a is comprised from a non-volatile memory etc., and has memorize | stored authentication information (1st authentication information). The first authentication information is information set for each power storage device 15 (storage battery 15a, control unit 15b). That is, the first authentication information is information associated with the storage battery 15a or the control unit 15b, and is configured by a serial code or the like. Note that the first authentication information may be information set for each mower 1 (vehicle body 2). The first storage unit 15c is connected to the control device 20, and the control device 20 can refer to (acquire) the first authentication information stored in the first storage unit 15c.

  In addition, the control device 20 has a second storage unit 21. The 2nd memory | storage part 21 is comprised from a non-volatile memory etc., and has memorize | stored authentication information (2nd authentication information). The second authentication information is information set for each mower 1 (vehicle body 2). That is, the second authentication information is information associated with the mower 1 (vehicle body 2), and is composed of a serial code or the like. Note that the second authentication information may be information set for each work device 4.

  FIG. 2 shows an example of the relationship between the first authentication information and the second authentication information. As shown in FIG. 2, the first authentication information indicated by “BT56231” and the second authentication information indicated by “K48328” are associated in advance. For example, when the mower 1 is manufactured, the first authentication information indicated by “BT56231” is written in the first storage unit 15c, and the second authentication information indicated by “K48328” is written in the second storage unit 21. The association information indicating that both correspond is stored in the second storage unit 21 of the control device 20.

  Alternatively, the writing device 32 is connected to the control device 20 at or after the purchase of the mower 1. The correspondence indicating that the second authentication information corresponding to the purchased mower 1 and the first authentication information corresponding to the power storage device 15 attached to the purchased mower 1 are associated from the writing device 32. By outputting the attachment information from the writing device 32 to the control device 20, it is stored in the second storage unit 21 of the control device 20 that both correspond.

  Alternatively, the mower 1 is provided with a communication device 35 that can be connected to an external device 34 such as a server, a smartphone, a PDA (Personal Digital Assistant), or a personal computer (PC). The user or the like registers the first authentication information and the second authentication information in the external device 34, and after the registration, the first authentication information and the second authentication information are associated with the communication device 35 from the external device 34. Send attachment information. The communication device 35 outputs the association information to the control device 20 after receiving it. Thereby, the control device 20 stores the association information transmitted from the communication device 35 in the second storage unit 21.

  The writing device 32 and the communication device 35 store the association information in the second storage unit 21 of the control device 20, but the writing device 32 and the communication device 35 store the first authentication information and the second authentication information. When the first authentication information and the second authentication information are acquired, the control device 20 creates the association information in which the two are associated with each other, and the created association information is You may memorize | store in the memory | storage part 21. FIG. In this case, the control device 20 may write the first authentication information acquired from either the writing device 32 or the communication device 35 into the first storage unit 15c. That is, the control device 20 may include a writing unit 24 that writes the first authentication information output from the outside to the first storage unit 15c.

When starting the driving of the mower 1, the control device 20 authenticates the first authentication information assigned to the power storage device 15 and the second authentication information assigned to the mower 1, etc., and authentication is established. In this case, the driving of the prime mover 5 is permitted, and when the authentication is not established, the driving of the prime mover 5 is not permitted.
As shown in FIG. 1, the control device 20 has an authentication unit 23. The authentication unit 23 includes an electric / electronic component provided in the control device 20, a program stored in the control device 20, and the like.

  The authentication unit 23 acquires first authentication information from the first storage unit 15 c of the power storage device 15 attached to the vehicle body 2. The authentication unit 23 performs authentication based on the first authentication information acquired after the first authentication information is acquired. For example, a switch (ignition switch) 30 that can be switched ON / OFF is connected to the control device 20. The ignition switch 30 is disposed in the vicinity of the driver's seat 17 and can be operated by the driver (operator). When the ignition switch 30 is switched from OFF to ON, the authentication unit 23 refers to the first storage unit 15c of the power storage device 15 and acquires the first authentication information. Further, when the first authentication information is acquired, the authentication unit 23 performs authentication (authentication process) between the acquired first authentication information and the second authentication information stored in the second storage unit 21. If the first authentication information and the second authentication information are associated with each other, the authentication unit 23 determines that the authentication has been established, and permits driving of the first electric motor 8 and the second electric motor 9. In addition, when the first authentication information and the second authentication information are not associated with each other, the authentication unit 23 determines that the authentication is not established and drives either the first electric motor 8 or the second electric motor 9. Is not allowed.

  For example, the 1st switching part 31 comprised from the relay etc. which can be switched to ON / OFF between the storage battery 15a of the electrical storage apparatus 15 and the inverter 16 is connected. When the authentication is established, the authentication unit 31 switches the first switching unit 31 from OFF to ON so that the power of the storage battery 15 a can be supplied to the inverter 16. On the other hand, when the authentication is not established, the authentication unit 31 keeps the first switching unit 31 OFF so that the power of the storage battery 15 a cannot be supplied to the inverter 16.

  In addition, as shown in FIG. 1, for example, a second switch configured by a relay or the like that can be switched ON / OFF between the inverter 16 and the electric motor (the first electric motor 8 and the second electric motor 9). The unit 33 may be connected. In this case, when the authentication is established, the authentication unit 31 switches the second switching unit 33 from OFF to ON so that the power (control signal) output from the inverter 16 can be supplied to the electric motors 8 and 9. On the other hand, when the authentication is not established, the authentication unit 31 holds the second switching unit 33 OFF so that the electric power of the storage battery 15a cannot be supplied to the electric motor 8.9.

  In addition, when the authentication by the authentication unit 23 is not established, charging to the storage battery 15a may be prohibited. For example, when the authentication by the authentication unit 23 is not established, the authentication unit 23 notifies the control unit 15b that the authentication has not been established, and the control unit 15b notifies the authentication unit 23 that the authentication has not been established. When acquired, charging of the storage battery 15a by a charger or the like is prohibited. That is, when the storage battery 15a is removed and set in the charger, or when a power cable provided in the power storage device 15 is connected to a commercial power source, the control unit 15b does not perform the charging process.

Further, the authentication unit 23 counts the number of times authentication is not established, and notifies the control unit 15b that the authentication has not been established when the number of times the authentication is not established exceeds a predetermined value. The charging of the storage battery 15a by a charger or the like may be prohibited.
Further, when the authentication by the authentication unit 23 is not established, the control of the control unit 15b may be stopped. For example, when authentication by the authentication unit 23 is not established, the authentication unit 23 outputs a non-permission signal to the control unit 15b. Even when the power is supplied when the non-permission signal output from the authentication unit 23 is acquired, the control unit 15b does not perform control related to charging or discharging of the storage battery 15a (stops control).

In the above-described embodiment, when the authentication by the authentication unit 23 is established, the prime mover 5 is driven, and when the authentication is not established, the drive of the prime mover 5 is stopped. May be locked directly.
According to the above, the work machine 1 includes the work device 4, the prime mover 5, the power storage device 15, and the control device 20, and the power storage device 15 includes the storage battery 15 a that can supply the power to the prime mover 5, The control device 20 performs authentication based on the first authentication information stored in the first storage unit 15c, and when the authentication is established, the control device 20 includes the first storage unit 15c that stores one authentication information. It has the authentication part 23 which permits a drive. According to this, the prime mover 5 of the work machine 1 can be driven only when the power storage device 15 provided in the work machine 1 is associated with the first authentication information. On the other hand, when the power storage device 15 provided in the work machine 1 is not associated with the first authentication information, the prime mover 5 of the work machine 1 cannot be driven. For example, the power storage device 15 provided in the work machine 1 can be used as a key for permitting or not permitting the driving of the prime mover 5 without using a method such as an engine key, smart entry key, or number input. The anti-theft can be further improved.

  The power storage device 15 is detachable from the vehicle body 2, and the authentication unit 23 acquires the first authentication information from the first storage unit 15 c of the power storage device 15 attached to the vehicle body 2 and acquires the first authentication information. Authentication is performed based on the authentication information. According to this, when the power storage device 15 is replaced, it can be determined whether the power storage device 15 is a regular one or an irregular one. It is possible not to drive one prime mover 5. That is, since the prime mover 5 cannot be driven unless the regular power storage device 15 is used, theft prevention can be further improved in this respect. In other words, since the prime mover 5 cannot be driven unless the relationship between the work machine 1 and the power storage device 15 is appropriate, the work machine 1 can be prevented from being stolen.

The work machine 1 includes a second storage unit 21 that stores second authentication information associated with the first authentication information, and the authentication unit 23 stores the second authentication information stored in the first storage unit 15a as the second authentication information. If it is associated with the second authentication information stored in the storage unit 21, it is determined that the authentication has been established. According to this, authentication can be performed by the first authentication information and the second authentication information.
The authentication unit 23 prohibits the charging of the storage battery 15a when authentication is not established. Therefore, when the unauthorized power storage device 15 is used, the storage battery 15a cannot be charged, so that the work machine 1 can be disabled.

The prime mover 5 is an electric motor, and the working device 4 is a cutting blade device that is driven by the power of the electric motor. According to this, when the power storage device 15 is a legitimate object, the cutting blade device can be driven to cut grass with the cutting blade device, and when the power storage device 15 is an unauthorized one, It is possible to prevent mowing by the cutting blade device.
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.

1 Mower (work machine)
Reference Signs List 4 working device 5 prime mover 11 cutting blade 15 power storage device 15a storage battery 15b control unit 16 inverter 20 control device 21 storage unit 23 authentication unit 24 writing unit 30 ignition switch 31 first switching unit 33 second switching unit

Claims (5)

Prime mover,
A working device that can be driven by the power of the prime mover;
A power storage device having a storage battery capable of supplying the power to the prime mover, and a first storage unit storing first authentication information;
A control device having an authentication unit that performs authentication based on the first authentication information stored in the first storage unit and permits the driving of the prime mover when the authentication is established;
Work machine equipped with. The power storage device is detachable from the vehicle body,
The work machine according to claim 1, wherein the authentication unit acquires the first authentication information from a first storage unit of a power storage device mounted on the vehicle body, and performs authentication based on the acquired first authentication information. A second storage unit for storing second authentication information associated with the first authentication information;
The authentication unit determines that the authentication has been established when the first authentication information stored in the first storage unit is associated with the second authentication information stored in the second storage unit. Or the working machine as described in 2.   The work machine according to claim 1, wherein the authentication unit prohibits charging of the storage battery when the authentication is not established.   The working machine according to claim 1, wherein the prime mover is an electric motor, and the working device is a cutting blade device that is driven by power of the electric motor.

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