JP7083286B2 - Work vehicle - Google Patents

Description

The present invention relates to a work vehicle such as a tractor, and more particularly to a work vehicle capable of giving notification for deterring theft.

Conventionally, a tractor for deterring theft has been proposed by detecting that the airframe is tilted by a tilt sensor and issuing an alarm by a buzzer or a horn (see Patent Document 1). The tractor described in Patent Document 1 is configured to issue an alarm when the airframe is tilted by a set angle or more with reference to the posture of the airframe when the key switch is turned off.

International Publication WO2016 / 052703

However, the tractor described in Patent Document 1 issues an alarm when the airframe is tilted even when the operator transports the tractor after turning off the key switch, so that the operator does not intend to use the tractor. In some cases, an alarm was issued and the operator felt annoyed.

Therefore, an object of the present invention is to provide a work vehicle capable of deterring theft while suppressing unintended notification.

The present invention comprises a traveling machine body (5) supported by a traveling device (2, 3) and an elevating connection mechanism (6) capable of vertically connecting a working machine to the traveling machine body (5). In the vehicle (1)
A key switch (24) that turns on / off the main power of the traveling machine (5) by a key operation that switches between an ON state and an OFF state.
The notification means (39) that executes the notification operation and
A vibration sensor (43) that outputs a signal according to the strength of vibration, a changeover switch (29) that is switched between an ON state and an OFF state, and a control unit (41) that controls the notification means (39). And, the notification control device (40) attached to the traveling machine body (5) is provided.
The control unit (41)
Based on the fact that when the changeover switch (29) is in the ON state and the key switch (24) is in the OFF state, an output signal corresponding to the vibration of a predetermined intensity or more is received from the vibration sensor (43). It is possible to cause the notification means (39) to execute the notification operation.
Before the first time elapses after the changeover switch (29) is in the ON state and the key switch (24) is in the OFF state, reception of the output signal is invalidated .
When the output signal is received after the lapse of the first time after the changeover switch (29) is in the ON state and the key switch (24) is in the OFF state, the notification operation is performed by the notification means (39). Before executing it, execute a warning operation different from the above notification operation,
When the output signal is received after the lapse of the first time after the changeover switch (29) is turned on and the key switch (24) is turned off, the output signal is received and then the second. When the notification means (39) is made to execute the notification operation after the lapse of the time, and the key switch (24) is turned on before the lapse of the second time after receiving the output signal. Do not let the notification means execute the notification operation.
It is characterized by that.

For example, referring to FIGS. 4 and 5, when the control unit (41) receives a new output signal after the end of the notification operation by the notification means (39), the control unit (41) again receives the notification means (39). The notification operation can be executed.

The reference numerals in parentheses are for comparison with the drawings, but do not affect the configuration described in the claims.

According to the first aspect of the present invention, when the changeover switch is in the ON state and the key switch is in the OFF state, the notification means can execute the notification operation. Therefore, the operator executes the notification operation to the notification means by the changeover switch. It is possible to select whether or not to allow the work vehicle to be stolen while suppressing unintended notification by the worker. Further, before the first time elapses after the changeover switch is in the ON state and the key switch is in the OFF state, the reception of the output signal from the vibration sensor is invalidated, so that the operator can turn on the changeover switch and use the key. By leaving the work vehicle before the lapse of the first time after the switch is turned off, it is possible to prevent the theft of the work vehicle while suppressing unintended notification due to vibration when the worker gets off the vehicle. ..

Further , the control unit causes the notification means to execute the notification operation after the lapse of the second time after receiving the output signal, and the key switch is turned on before the lapse of the second time after receiving the output signal. If this happens, the notification means will not be made to execute the notification operation, so even if the operator accidentally vibrates the traveling aircraft after the changeover switch is in the ON state and the key switch is in the OFF state, the control unit will output a signal. By turning on the key switch before the lapse of the second time after receiving the signal, the notification means can stop executing the notification operation, and the work vehicle can suppress the notification that the operator does not intend. It is possible to deter the theft of.

Further , before the notification means is made to execute the notification operation, the notification means is made to execute a warning operation different from the notification operation. It becomes easy to stop the means from executing the notification operation.

According to the second aspect of the present invention, when a new output signal is received after the notification operation by the notification means is completed, the notification means is made to execute the notification operation again, so that the battery is suppressed from being consumed by unnecessary notification. At the same time, it is possible to prevent the theft of the work vehicle even after the notification operation is completed.

The side view which shows the tractor which concerns on this embodiment. A perspective view of the driving unit as viewed from behind. A perspective view of the front part of the driving unit as viewed from the rear. A functional block diagram showing a control configuration. A flowchart showing the notification process.

<Overall configuration>
Hereinafter, embodiments of the present invention will be described with reference to the drawings. As shown in FIG. 1, the tractor (working vehicle) 1 of the present embodiment includes a machine body (traveling machine body) 5 supported by front wheels 2 and rear wheels 3 which are traveling devices. The rear part of the machine body 5 is provided with an elevating connection mechanism 6 capable of elevating and lowering various working machines (not shown) such as a rotary tiller by expanding and contracting a hydraulic cylinder. The front part of the machine body 5 has a headlight 7 as a light emitting device that emits light to illuminate the front of the machine body 5, a diesel engine E, and a main battery 32 as a first battery that supplies electric power to each part of the machine body 5. (See FIG. 4), and a driving unit 10 (see FIG. 2) covered with a cabin 8 is arranged behind the engine E. The cabin 8 has a door 9 that is opened and closed when an operator gets on and off.

Next, the operation unit 10 will be described. As shown in FIG. 2, in the driver unit 10, the steering wheel 11 is arranged in front of the driver's seat (not shown) in which the operator is seated. Further, the driving unit 10 independently separates the accelerator pedal 12 and the left and right rear wheels 3 below the steering wheel 11 to shift the main speed change mechanism (not shown) that continuously changes the power of the engine E. Brake pedals 13 and 13 for braking are arranged. In front of the steering wheel 11, a front panel 15 having a lamp, a display, and the like and being operated by an operator is arranged.

Next, the front panel 15 and the peripheral portions of the front panel 15 will be described. As shown in FIG. 3, the front panel 15 displays a fuel remaining amount warning light 16 for notifying that the fuel is low, a battery charging warning light 17 for notifying that the battery is low, and the engine E rotation speed. It has a display device 21 including an instrument such as an engine tachometer 19 and a liquid crystal panel as a display means capable of displaying information including various settings related to the machine body 5 and the working machine. Further, around the front panel 15, an operating device 22 for operating the display device 21, a key switch 24, and a horn 36 (see FIG. 4) as a sound emitting device arranged at the front of the machine body 5 to output sound are provided. A horn switch 26 to be operated, a headlight switch 27 to turn on / off the headlight 7, a work machine operation switch 28 to operate the work machine, and the like are arranged.

The key switch 24 has a keyhole (not shown), and the ON state and the OFF state are switched by a key operation which is a rotation operation performed in a state where the plate-shaped key 23 is inserted into the keyhole. The key switch 24 turns on / off the main power of the machine body 5 by switching between the ON state and the OFF state. Further, in the vicinity of the key switch 24, there is a security switch 29 as a changeover switch for operating the security device 40 (see FIG. 4), which is a security device of the tractor 1, by switching between the ON state and the OFF state. Have been placed. The details of the security switch 29 will be described later.

The horn switch 26 switches between an ON state and an OFF state by a pressing operation, and makes the horn 36 sound when both the key switch 24 and the horn switch 26 are in the ON state. The headlight switch 27 switches between an ON state and an OFF state by a rotation operation, and turns on the headlight 7 when both the key switch 24 and the headlight switch 27 are in the ON state.

Next, a control block diagram of the tractor 1 will be described. As shown in FIG. 4, the tractor 1 has a microcomputer (not shown) including a CPU, ROM, RAM, an interface, and the like, and controls a vehicle control unit 31 that controls the machine body 5 and a display device 21. The display control unit 33 and the security control unit 41 as a control unit for controlling the security device 40 described later are provided, and the vehicle control unit 31 is provided by the operation / display control unit 33, the security device 40, and a CAN (Control Area Network). It is connected so that it can communicate with each other.

The vehicle control unit 31 receives power from the main battery 32 via the key switch 24 when the key switch 24 is in the ON state, and is provided on the machine body 5 such as the engine rotation speed and the operating time of the tractor 1. Information based on the input signal from the sensor (not shown) is output to the operation / display control unit 33 and the security control unit 41, and fuel is supplied to the engine E based on the input signal from each sensor and the operation / display control unit 33. It controls a fuel injection device (not shown) that supplies fuel, and a solenoid valve (not shown) that operates various hydraulic devices.

The operation / display control unit 33 is electrically connected to the key switch 24, the operation device 22, and the display device 21. The operation / display control unit 33 receives power from the main battery 32 via the key switch 24 when the key switch 24 is in the ON state, and displays based on the input signals from the operation device 22 and the vehicle control unit 31. It controls the display contents of the device 21 and the instruments, and outputs a signal to the vehicle control unit 31 based on the input signal from the operation device 22.

Further, the main battery 32 supplies electric power to the horn 36 via the key switch 24 and the horn switch 26, and supplies electric power to the headlight 7 via the key switch 24 and the headlight switch 27.

The tractor 1 of the present embodiment includes a security device 40 as a notification control device which is a device for deterring theft by notification based on the vibration of the machine body 5. The security device 40 is a separate body from the security control unit 41 and the main battery 32, and is a secondary battery 42 as a second battery that supplies power to each part of the security device 40 including the security control unit 41, a vibration sensor 43, and ON. A security switch 29 that is switched between a state and an OFF state, a GPS detection unit 45 as a position detecting means for receiving signals from GPS satellites, a buzzer 46 for outputting electronic sounds, and an external server as an external device (not shown). ), It has a telephone line communication unit 47 as an external transmission means for transmitting information. The security control unit 41 is electrically connected to each configuration of the security device 40, the key switch 24, the horn 36, and the headlight 7.

In the security device 40, each configuration of the security device 40 is unitized. This makes it possible, for example, to receive an order from a dealer and attach it to the machine 5 in the final process of the assembly line of the tractor 1, or to attach it to the tractor 1 sold without the security device 40. It is configured.

The vibration sensor 43 includes an acceleration sensor capable of detecting the tilt angle, acceleration and vibration of the machine body 5, generates power by vibration, and outputs a signal of strength corresponding to the strength of vibration to the security control unit 41. The security switch 29 is composed of an alternate type pressing switch, and is a switch that can be switched to an OFF state when the operator does not want notification based on the vibration of the machine body 5 and an ON state when he wants notification, and is a switching operation. A signal is output to the security control unit 41 according to the operation.

With this configuration, the security control unit 41 sets the sensitivity of the vibration sensor 43 based on the input signals from the vehicle control unit 31, the vibration sensor 43, the security switch 29, and the GPS detection unit 45. And the notification process of performing notification by the horn 36, the headlight 7, the buzzer 46, and the telephone line communication unit 47 is executed.

The vibration sensitivity setting process is a process of changing the set vibration strength as a predetermined threshold value, which is the vibration strength that the security control unit 41 determines that the tractor 1 is stolen based on the input signal from the vibration sensor 43. ..

The security control unit 41 stores in advance the set vibration strength corresponding to each of the three stages of high sensitivity, medium sensitivity, and low sensitivity, and each vibration strength is the vibration strength corresponding to the high sensitivity < Vibration strength corresponding to medium sensitivity <vibration strength corresponding to low sensitivity. The security control unit 41 executes the vibration sensitivity setting process when the key switch 24 is in the ON state, and each time it receives a signal output when the security switch 29 is pressed from the OFF state to the ON state. The stage of the set vibration strength stored in the security control unit 41 is cyclically changed in the order of high sensitivity → medium sensitivity → low sensitivity → high sensitivity → ....

Further, when the set vibration strength is changed, the security control unit 41 notifies the operator of the new set vibration strength by blowing a single sound by the buzzer 46. Specifically, the security control unit 41 blows one single note when the security switch 29 is pressed and the set vibration strength step is set to high sensitivity, and is set to medium sensitivity. Two single notes are played, and three single notes are played when the sensitivity is set to low. The security control unit 41 may be configured to notify the operator of the set vibration strength by another aspect. For example, the set vibration strength is determined by the number of blinks of the lamp arranged in the vicinity of the security switch 29. It may be configured to notify the operator.

As described above, since the tractor 1 also serves as an adjusting means capable of adjusting the set vibration strength by the security switch 29, it is not necessary to provide a separate adjusting means, and the number of parts is reduced. Further, since the set vibration strength is adjusted according to the number of times the security switch 29 is pressed, for example, vibration generated by wind or the passage of a vehicle, vibration generated by opening and closing the door 9 by an operator, etc. This suppresses unintended notification by the operator.

The adjusting means capable of adjusting the set vibration strength may be composed of the operating device 22 and the display device 21. With this configuration, the operator can perform the adjustment operation while checking the information displayed on the display device 21, and can prevent an error in adjusting the set vibration strength. At the same time, it is not necessary to provide a separate adjusting means, and the number of parts can be reduced.

Further, the security control unit 41 has detected a vibration equal to or higher than the set vibration strength of the machine body 5 by the vibration sensor 43, that is, has received an output signal corresponding to the vibration corresponding to the vibration equal to or higher than the set vibration strength of the machine body 5 by the vibration sensor 43. Based on this, in order to prevent the theft of the tractor 1, the horn 36, the headlight 7, the buzzer 46, and the telephone line communication unit 47 are subjected to the notification process to execute the notification operation. The horn 36, the headlight 7, the buzzer 46, and the telephone line communication unit 47 constitute the notification means 39 in the present embodiment.

In the security control unit 41, by causing the notification means 39 to execute the notification operation, the horn 36 intermittently sounds a single sound, the headlight 7 repeatedly blinks, the buzzer 46 intermittently sounds a single sound, and the telephone line is used. The line communication unit 47 transmits to the external server via the telephone line that the vibration sensor 43 has detected a vibration equal to or greater than the set vibration strength of the machine 5 and the position information of the tractor 1 detected by the GPS detection unit 45. By causing the notification means 39 to execute the notification means, the security control unit 41 threatens the person who intends to take away the tractor 1 with sound and light, and also notifies the outside via the telephone line. ing. The notification operation is not limited to the above-mentioned contents, and the long sound may be continuously blown by the horn 36 or the buzzer 46, the headlight 7 may be continuously turned on, or in other embodiments. There may be.

The tractor 1 is configured so that the operation of the security control unit 41 and the notification operation by the notification means 39 are performed by the electric power of the sub-battery 42. As a result, the security device 40 prevents the main battery 32 from being consumed. Further, as described above, the tractor 1 operates without the vibration sensor 43 generating electric power by itself and receiving the electric power supply. Therefore, when the main battery 32 cannot supply the electric power normally, for example, the main battery 32 spontaneously discharges. It is possible to operate the security device 40 even when the power cannot be supplied due to the above (so-called dead battery state) or when the main battery 32 is illegally removed.

Further, the external server is connected to the Internet, and when it receives the information from the telephone line communication unit 47 by the notification operation, it sends an e-mail to the e-mail address of the store or the user registered in advance to the user. In addition to notifying that the vibration of No. 5 has been detected, the location information of the tractor 1 is provided to the store or the user who has accessed the external server via the Internet. As a result, the user can know the position of the tractor 1 even if the tractor 1 is taken away. The details of the notification process will be described later.

Next, the notification process executed by the security control unit 41 will be described. As shown in FIG. 5, when the notification process is started, the security control unit 41 determines whether or not the security switch 29 is in the ON state (step S1). In this process, the security control unit 41 refers to the input signal from the security switch 29 and determines whether or not the operator intends to notify by the security device 40.

In the process of step S1, when the security switch 29 is in the ON state (YES in step S1), the security control unit 41 determines whether or not the key switch 24 is in the ON state (step S2). Further, in the process of step S1, when the security switch 29 is in the OFF state (NO in step S1), the security control unit 41 also determines whether or not the key switch 24 is in the ON state (step S3). ). In the processing of step S2 and step S3, the security control unit 41 refers to the input signal from the key switch 24, and whether or not the work by the tractor 1 is completed and the power supply to the machine 5 is cut off. By determining whether or not, it is determined whether or not the worker intends to be notified by the security device 40. In this way, the security control unit 41 causes the operator to select whether or not to cause the notification means 39 to execute the notification operation by the switching operation of the security switch 29.

In the process of step S2 or step S3, when the key switch 24 is in the ON state (YES in step S2, YES in step S3), the security control unit 41 repeats the process of step S1 again. In this way, while the key switch 24 is maintained in the ON state, the security control unit 41 is maintained in the normal state in which the work is performed by the tractor 1.

In the process of step S2, when the key switch 24 is in the OFF state (NO in step S2), the security control unit 41 outputs a signal to the buzzer 46, and the buzzer 46 causes the number of times according to the stage of the set vibration strength. (Step S4), the state is shifted to the monitoring state in which the theft is monitored by the vibration sensor 43. In this process, the security control unit 41 causes the buzzer 46 to make a single sound, so that the state shifts to the monitoring state in which the vibration of the machine 5 is monitored by the operator, and the set vibration strength. It informs the stage of.

When the process of step S4 is executed, the security control unit 41 determines whether or not the first time has elapsed since the key switch 24 was turned off by the timer (not shown) of the security control unit 41. (Step S5) If the first time has not elapsed (NO in step S5), the process of step S5 is repeated. In this process, the security control unit 41 performs a vibration sensor after the state shifts to the monitoring state, that is, before the first time elapses after the security switch 29 is in the ON state and the key switch 24 is in the OFF state. Even if an output signal is received from 43, the notification means 39 is configured not to execute the notification operation. As a result, the security control unit 41 leaves the tractor 1 before the lapse of the first time after the operator turns on the changeover switch and turns off the key switch 24, which causes vibration when the operator gets off the vehicle. The notification operation is suppressed.

Further, the first time is longer than the time required for the worker to get off the tractor 1 after turning off the key switch 24, and is longer than the time when the worker is expected to be still near the tractor 1. It is desirable to set a short time, specifically, a predetermined time of 30 seconds or more and 3 minutes or less (for example, 1 minute). As a result, the security control unit 41 suppresses notifications not intended by the operator, such as notification by vibration when the operator turns off the key switch 24 and then descends from the tractor 1.

In the process of step S5, when the first time has elapsed since the key switch 24 was turned off (YES in step S5), the security control unit 41 vibrates from the vibration sensor 43 to a vibration strength equal to or higher than the set vibration strength. It is determined whether or not the output signal corresponding to the above is received (step S6). In this process, the security control unit 41 determines whether or not an effective output signal for performing notification in the monitoring state has been received from the vibration sensor 43.

In the process of step S6, when the output signal corresponding to the vibration equal to or higher than the set vibration strength is not received from the vibration sensor 43 (NO in step S6), the security control unit 41 indicates whether the key switch 24 is in the ON state. It is determined whether or not (step S7). In this process, the security control unit 41 determines whether or not to shift the state from the monitoring state to the normal state based on the fact that the key switch 24 is switched to the ON state by the operator.

When the key switch 24 is in the OFF state in the process of step S7 (NO in step S7), the security control unit 41 repeats the process of step S6 to maintain the monitoring state. When the key switch 24 is in the ON state in the process of step S7 (YES in step S7), the security control unit 41 shifts the state from the monitoring state to the normal state, and executes the process of step S1 again. In this way, the tractor 1 makes it possible to release the monitoring state by switching the key switch 24 to the ON state.

In the process of step S6, when an output signal corresponding to the vibration of the set vibration strength or more is received from the vibration sensor 43 (YES in step S6), the security control unit 41 causes the notification means 39 to execute the notification operation. Before shifting to the alarm state and causing the notification means 39 to execute the notification operation, the buzzer 46 is started to execute the warning operation for sounding a long sound for a predetermined time (for example, 3 seconds) (step S8). In this process, the security control unit 41 warns the operator that the notification operation by the notification means 39 will be executed after a predetermined time. The warning operation may be performed by the buzzer 46 once or a plurality of short sounds, or by the horn 36.

When the process of step S8 is executed, the security control unit 41 determines whether or not the key switch 24 is in the ON state (step S9). In this process, the security control unit 41 determines whether or not to shift the state from the alarm state to the normal state based on the fact that the key switch 24 is switched to the ON state by the operator.

When the key switch 24 is in the ON state in the process of step S9 (YES in step S9), the security control unit 41 shifts the state from the alarm state to the normal state, and executes the process of step S1 again. In this way, the tractor 1 can cancel the alarm state by switching the key switch 24 to the ON state, and suppresses the notification that the operator does not intend.

In the process of step S9, when the key switch 24 is in the OFF state (NO in step S9), has the security control unit 41 passed a second time after shifting from the monitoring state to the alarm state by the timer? Whether or not it is determined (step S10), and if the second time has not elapsed (NO in step S10), the process of step S9 is executed again. In this process, the security control unit 41 performs the vibration sensor 43 after the state shifts to the alarm state, that is, after the first time has elapsed after the security switch 29 is turned on and the key switch 24 is turned off. When an output signal corresponding to a vibration equal to or higher than the set vibration strength is received, the notification means is delayed from executing the notification operation until the second time elapses. As a result, even if the operator accidentally vibrates the machine 5 while the security switch 29 is in the ON state and the key switch 24 is in the OFF state, the security control unit 41 can generate the security control unit 41 from the vibration sensor 43. By turning on the key switch 24 after receiving the output signal and before the lapse of the second time, it is possible to stop the execution of the notification operation of the notification means 39.

Further, the second time is a time longer than the time required for the operator to turn on the key switch 24 after noticing the warning operation by the buzzer 46, specifically, a predetermined time of 10 seconds or more and 1 minute or less. It is desirable to set the time to (for example, 30 seconds). As a result, for example, when the operator accidentally vibrates the machine 5 in the monitoring state, the security control unit 41 turns on the key switch 24 to release the alarm state, that is, the notification operation by the notification means. It is possible to stop the execution.

When the second time has elapsed in the process of step S10 (YES in step S10), the security control unit 41 causes the notification means 39 to start executing the notification operation (step S11). In this process, the security control unit 41 threatens the person who is going to take away the tractor 1 with sound and light to prevent the tractor 1 from being stolen, and also informs the user via an external server. Is transmitted to notify that the tractor 1 may be about to be taken away and the position of the tractor 1.

When the process of step S11 is executed, the security control unit 41 determines whether or not a third time has elapsed since the notification means 39 was started to execute the notification operation by the timer (step S12). In this process, the security control unit 41 determines whether or not the notification means 39 suspends the notification operation in order to suppress the consumption of the sub-battery 42. Further, the third time is a time longer than the time required for the telephone line communication unit 47 to complete the transmission of information to the external server, specifically, a predetermined time of 1 minute or more and 10 minutes or less (for example, 3). Minutes) is desirable.

If the third time has not elapsed in the process of step S12 (NO in step S12), the security control unit 41 determines whether or not the key switch 24 is in the ON state (step S13). In this process, the security control unit 41 determines whether or not to shift the state from the monitoring state to the normal state based on the fact that the key switch 24 is switched to the ON state by the operator. In the process of step S13, when the key switch 24 is in the ON state (YES in step S13), the security control unit 41 stops the notification operation by the notification means 39 and shifts the state from the alarm state to the normal state. The process of step S1 is executed again. In this way, the tractor 1 can stop the notification operation by the notification means 39 by switching the key switch 24 to the ON state, and suppresses notification unintended by the operator.

In the process of step S13, when the key switch 24 is in the OFF state (NO in step S13), the process of step S12 is executed again, and the execution of the notification operation by the notification means 39 is continued. When the third time has elapsed in the process of step S12 (YES in step S12), the security control unit 41 stops the notification operation by the notification means 39 and shifts the state from the alarm state to the monitoring state (YES in step S12). Step S14), the process of step S6 is executed again. In this way, the security control unit 41 continues to execute the notification operation by the horn 36, the headlight 7 and the buzzer 46 until at least the telephone line communication unit 47 completes the transmission of information to the external server, and the auxiliary battery 42. We are trying to reduce the consumption of the battery. Further, the security control unit 41 is configured to cause the notification means 39 to execute the notification operation again when a vibration equal to or higher than the set vibration strength by the vibration sensor 43 is newly detected after the notification operation by the notification means 39 is completed. There is.

In the process of step S3, when the key switch 24 is in the OFF state (NO in step S3), the security control unit 41 shifts the state from the normal state to the hibernation state in which the notification operation by the notification means 39 is not executed. When the state shifts from the normal state to the hibernation state, the security control unit 41 determines whether or not the key switch 24 is in the ON state (step S15), and when the key switch 24 is in the OFF state (NO in step S15). ), The process of step S15 is executed again, and the hibernation state is continued until the key switch 24 is turned on (step S15). In the process of step S15, when the key switch 24 is in the ON state (YES in step S15), the security control unit 41 shifts the state from the hibernate state to the normal state, and executes the process of step S1 again.

<Summary>
Since the present embodiment has the above configuration, the notification means 39 can execute the notification operation when the security switch 29 is in the ON state and the key switch 24 is in the OFF state, so that the operator can execute the notification operation. 29 makes it possible to select whether or not to cause the notification means 39 to execute the notification operation, and it is possible to prevent the tractor 1 from being stolen while suppressing the notification that the operator does not intend. Further, even if the output signal corresponding to the vibration equal to or higher than the set vibration strength is received from the vibration sensor 43 before the first time elapses after the security switch 29 is in the ON state and the key switch 24 is in the OFF state. Since the notification means 39 is not made to execute the notification operation, the operator leaves the tractor 1 before the lapse of the first time after the security switch 29 is turned on and the key switch 24 is turned off, so that the worker gets off the vehicle. It is possible to prevent the theft of the tractor 1 while suppressing unintended notification due to the vibration of the tractor 1.

Further, after the second time elapses after the security control unit 41 receives the output signal corresponding to the vibration of the set vibration strength or more from the vibration sensor 43, the notification means 39 is made to execute the notification operation, and the output signal. If the key switch 24 is turned on before the lapse of the second time after receiving the signal, the notification means 39 is not executed, so that the operator can turn on the security switch 29 and turn off the key switch 24. Even if the machine 5 is erroneously vibrated after the state is set, the key switch 24 is turned on before the second time elapses after the security control unit 41 receives the output signal to notify the user. It is possible to stop the means 39 from executing the notification operation, and it is possible to prevent the tractor 1 from being stolen while suppressing the notification that the operator does not intend.

Further, before the notification means 39 is made to execute the notification operation, the buzzer 46 is made to execute a warning operation different from the notification operation. Makes it easy to stop the notification means 39 from executing the notification operation.

Further, when an output signal corresponding to the vibration equal to or higher than the set vibration strength is newly received from the vibration sensor 43 after the notification operation by the notification means 39 is completed, the notification means 39 is made to execute the notification operation again, which is unnecessary. It is possible to suppress the consumption of the auxiliary battery 42 by the notification, and it is possible to continuously suppress the theft of the tractor 1 even after the notification operation is completed.

Further, since the security device 40 having the vibration sensor 43, the security switch 29 and the security control unit 41 and deterring theft is unitized and attached to the aircraft separately from the vehicle control unit 31, the aircraft The security device 40 can be attached in a state where the 5 is assembled. This makes it possible, for example, to select whether or not to mount the security device 40 on the tractor 1 in the final process in the production line of the tractor 1, or to select by the user after the tractor is completed.

<Modification example>
In the present embodiment, when the key switch 24 is switched from the ON state to the OFF state when the security switch 29 is in the ON state, the security control unit 41 vibrates the machine body 5 by the vibration sensor 43 from the normal state. It is configured to move to a monitoring state to monitor, but is not limited to this. For example, when the security switch 29 is switched from the OFF state to the ON state when the key switch 24 is in the OFF state, the security control unit 41 may be configured to shift from the normal state to the monitoring state. , Regardless of the switching order of the security switch 29 and the key switch 24, it may be configured to shift from the normal state to the monitoring state when the security switch 29 is in the ON state and the key switch 24 is in the OFF state. ..

Further, in the present embodiment, the tractor 1 is configured independently of the security device 40 by the notification means 39 having the horn 36 and the headlight 7, but the tractor 1 is not limited thereto. In the tractor 1, the notification means 39 may be composed of only one of the horn 36 and the headlight 7, or may have a configuration other than the horn 36 and the headlight 7, for example, light. It may be configured to have a patrol lamp that emits light and the reflector rotates, and a speaker that outputs voice such as a warning message. Further, the security device 40 may be configured to have a part of each configuration of the notification means 39.

Further, in the present embodiment, the security control unit 41 causes the timer to clock 1 minute as the first time, 30 seconds as the second time, and 3 minutes as the third time, but the present invention is not limited to this. .. The first time, the second time, and the third time can be freely set within the range in which the security control unit 41 exerts the action of timing each time by the timer. Further, the security control unit 41 stores the number of times that the vibration sensor 43 detects effective vibration or the number of times that the notification means 39 executes the notification operation, and the second time and the third time are stored according to the stored number of times. May be configured to change. For example, when the notification means 39 executes the notification operation in the alarm state and then shifts to the alarm state again through the monitoring state, the security control unit 41 shortens or sets the second time to 0 or extends the third time. It may be configured to do so.

Further, in the present embodiment, the tractor 1 is configured such that the key switch 24 is switched between an ON state and an OFF state by a key operation which is a rotation operation of a plate-shaped key 23 inserted into a keyhole. However, it is not limited to this. In the tractor 1, for example, the key operation for switching the key switch 24 from the OFF state to the ON state may be communication such as a password code performed between the receiving unit of the tractor 1 and the electronic key, or the tractor 1 may have a key operation. It may be a rotation operation of the knob that can be operated when the password matches by the communication performed between the receiving unit and the electronic key, or it may be an operation of inputting the password code using a numeric keypad or the like. , In the case of these configurations, the key operation to change the key switch 24 from the OFF state to the ON state is a person who does not have an electronic key or a person who does not know the password code, such as a button pressing operation or a knob rotation operation. However, it may be a possible operation.

Further, in the present embodiment, the security control unit 41 transmits the position information of the tractor 1 by the GPS detection unit 45 to the telephone line communication unit 47 to the external server based on the reception of the output signal from the vibration sensor 43. It is configured to, but is not limited to this. Based on the reception of the output signal from the vibration sensor 43, the security control unit 41 causes the external transmission means to transmit information regarding the detection result by the position detection means that detects the position of the tractor 1 to the external device. It suffices if it is configured in. For example, when the security control unit 41 moves the tractor 1 to the outside of the preset range on the map after receiving the output signal from the vibration sensor 43, the security control unit 41 moves the tractor 1 to the outside of the preset range. The information that the information has been sent may be configured to be transmitted to the external server by the telephone line communication unit 47, or whether or not the tractor 1 has moved after receiving the output signal from the vibration sensor 43 is detected by the position detecting means. , Information on whether or not the vehicle has been moved may be transmitted to a terminal owned by the owner of the tractor 1 by an external transmission means. Further, the security control unit 41 transmits specific information to the telephone line communication unit 47 to the external server when the GPS detection unit 45 becomes unable to receive the GPS radio wave after receiving the output signal from the vibration sensor 43. It may be configured to cause.

Further, in the present embodiment, the tractor 1 is configured to detect the position of the tractor 1 by the GPS detection unit 45, but the tractor 1 is not limited to this. The tractor 1 may be configured to be able to detect that the tractor 1 has been moved illegally, and may be configured to detect the position of the tractor 1 by communicating with a base station such as a mobile phone, for example. Alternatively, it may be configured to detect the position of the tractor 1 by communicating with an infrared sensor or the like installed in the storage place of the tractor 1, or the tractor may be configured based on the amount of rotation of the front wheel 2 or the rear wheel 3. It may be configured to detect the position of 1.

Further, in the present embodiment, the vibration sensor 43 is configured to generate electricity by the vibration of the machine body 5 and transmit a signal having a strength corresponding to the magnitude of the vibration to the security control unit 41. Not limited. The vibration sensor 43 may be configured to receive power supplied from the security control unit 41 and transmit a signal having a strength corresponding to the magnitude of the vibration to the security control unit 41, or may be preset. It may be configured to transmit a signal to the security control unit 41 when a vibration of a predetermined strength (threshold) or higher is detected, or the vibration sensor 43 adjusts a predetermined threshold of vibration for transmitting the signal. It may have possible adjusting means.

Further, in the present embodiment, the security control unit 41 receives an output signal from the vibration sensor 43 before the lapse of the first time after the security switch 29 is in the ON state and the key switch 24 is in the OFF state. Is also configured so that the process of causing the notification means 39 to execute the notification operation is not started, but the present invention is not limited to this. The security control unit 41 is configured to invalidate the reception of the output signal from the vibration sensor 43 before the lapse of the first time after the security switch 29 is in the ON state and the key switch 24 is in the OFF state. For example, the output signal from the vibration sensor 43 is not received by the relay or the like before the first time elapses after the security switch 29 is turned on and the key switch 24 is turned off. Alternatively, if the vibration sensor is a sensor that requires power supply, it may be configured to cut off the power supply to the vibration sensor.

Further, in the present embodiment, the security control unit 41 is configured to adjust the set vibration strength in three stages according to the number of times the switching operation of the security switch 29 is performed, but the present invention is not limited to this. .. For example, the security switch 29 comprises a rotary switch or the like capable of outputting a signal corresponding to the rotation position, and the security control unit 41 steplessly sets the vibration strength based on the signal corresponding to the rotation position received from the security switch 29. It may be configured to adjust the vibration strength, or may be configured to adjust the set vibration strength by touching the display device when the touch panel type display device is provided.

Further, in the present embodiment, the security control unit 41 operates by supplying electric power from the sub-battery 42, which is separate from the main battery 32, and also notifies the notifying means 39 by supplying electric power from the sub-battery 42. It is configured to run, but is not limited to this. For example, when the security control unit 41 operates by supplying power from the main battery 32 and causes the notification means 39 to execute the notification operation by supplying power from the main battery 32, there is a problem in supplying power from the main battery 32. Only the sub-battery 42 may be configured to receive power from the sub-battery 42, or the sub-battery 42 and the main battery 32 may be electrically connected so that the sub-battery 42 can be charged from the main battery 32. May be good.

Further, in the present embodiment, the security switch 29 is composed of an alternate type pressing switch, but the security switch 29 is not limited thereto. The security switch 29 may be configured to be switched between an ON state and an OFF state by the operator. For example, the security switch 29 receives radio waves from a mobile transmitter, a mobile phone, or the like possessed by the operator. Based on this, it may be configured to be switched between the ON state and the OFF state, or it may be configured by a momentary type pressing switch having a built-in LED that lights up in the ON state, or it may be a rotatable rotary. It may be composed of switches, or other various configurations are conceivable.

Further, in the present embodiment, the security device 40 is configured by being electrically connected to the vehicle control unit 31, the horn 36, and the headlight 7, but is not limited thereto. For example, the security device 40 may not be directly connected to the vehicle control unit 31, the horn 36, and the headlight 7, and the notification means 39 may be configured by the buzzer 46 and the telephone line communication unit 47. In this configuration, when the security device 40 is mounted on the machine body 5, the electrical connection work is only to connect the security control unit 41 and the key switch 24, so that when the security device 40 is mounted. It is possible to improve the workability of the tractor and to mount the security device 40 on various tractors sold without mounting the security device 40.

Further, in the present embodiment, the security device 40 is not limited to a single unit, although each configuration of the security device 40 is unitized. The security device 40 may be composed of a plurality of units.

Further, in the present embodiment, the tractor 1 including the front wheels 2 and the rear wheels 3 which are traveling devices as a work vehicle has been described, but the present invention is not limited thereto. The work vehicle may be provided with another device as a traveling device, for example, may be provided with a pair of crawler type traveling devices as a traveling device, or has a pair of wheels and a pair of crawlers. A half crawler type traveling device may be provided, or a four crawler type traveling device having four crawlers may be provided. Further, the present invention can be applied to work vehicles other than tractors, such as a combine for harvesting and threshing rice, and a transplanter for transplanting rice to a field.

1 Work vehicle (tractor)
2 Traveling device (front wheel)
3 Traveling device (rear wheel)
5 Traveling aircraft (airframe)
6 Lifting connection mechanism 24 Key switch 29 Changeover switch (security switch)
39 Notification means 40 Notification control device (security device)
41 Control unit (security control unit)
43 Vibration sensor

Claims (2)

In a work vehicle provided with a traveling machine supported by a traveling device and an elevating connection mechanism capable of vertically connecting the working machine to the traveling machine.
A key switch that turns on and off the main power of the traveling machine by operating the key to switch between the ON state and the OFF state.
Notification means for executing notification operation and
It has a vibration sensor that outputs a signal according to the strength of vibration, a changeover switch that is switched between an ON state and an OFF state, and a control unit that controls the notification means, and is attached to the traveling machine body. Equipped with a notification control device
The control unit
When the changeover switch is in the ON state and the key switch is in the OFF state, the notification operation is executed by the notification means based on the reception of an output signal corresponding to the vibration of a predetermined strength or more from the vibration sensor. It is possible to let
Before the lapse of the first time after the changeover switch is turned on and the key switch is turned off, the reception of the output signal is invalidated .
When the output signal is received after the lapse of the first time after the changeover switch is in the ON state and the key switch is in the OFF state, the notification operation is performed before the notification means is made to execute the notification operation. Perform different warning actions,
When the output signal is received after the lapse of the first time after the changeover switch is turned on and the key switch is turned off, the output signal is received and the second time has elapsed. If the notification means is made to execute the notification operation and the key switch is turned on before the lapse of the second time after receiving the output signal, the notification means is not made to execute the notification operation.
A work vehicle characterized by that. When the control unit receives a new output signal after the notification operation by the notification means is completed, the control unit can execute the notification operation again on the notification means.
The work vehicle according to claim 1 .

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