JP2022043464A - Notification device and work vehicle provided with the same - Google Patents

Abstract

To reduce the possibility that action of an operator necessary for a work is inhibited by notification.SOLUTION: A notification device includes: a detection part for detecting a get-in state of an operator; and a notification part for executing notification processing for calling attention to the operator on the basis of a detection result of the detection part. The notification processing includes first notification processing, and second notification processing with a notification level indicating a degree of calling the attention to the operator lower than that of the first notification processing. The notification part switches the first notification processing to the second notification processing after having performed the first notification processing on the basis of the detection result of the detection part.SELECTED DRAWING: Figure 20

Description

The present invention relates to a notification device and a work vehicle including the notification device.

Conventionally, in construction machinery, there has been known a technique for giving a warning (notification) to an operator based on a seatbelt, a lock position of a cutoff lever (gate lock lever), an inclination of a construction machine, and the like (for example). See Patent Document 1).

Japanese Unexamined Patent Publication No. 2017-145626

For example, an operator who drives and operates a work vehicle such as a construction machine keeps the engine of the work vehicle running and keeps the cutoff lever down (getting off) so that the work location of the work vehicle can be visually confirmed. (Without doing so), you may try to get up from your seat. In such a case, it is an operator who acts after fully understanding the reason for the notification (in the above example, the seat) by continuously performing the notification and relentlessly paying attention to the operator to sit down. It causes annoyance to the operator (operator who tries to visually check by standing up from). As a result, it becomes difficult for the operator to take the above action. That is, the behavior of the operator necessary for the work may be hindered by the notification.

The present invention has been made to solve the above-mentioned problems, and an object thereof is a notification device capable of reducing the possibility that the behavior of an operator required for work is obstructed by notification, and a notification device thereof. The purpose is to provide a work vehicle equipped with a notification device.

The notification device according to one aspect of the present invention includes a detection unit that detects the riding state of the operator and a notification unit that executes a notification process that calls attention to the operator based on the detection result of the detection unit. The notification process includes a first notification process and a second notification process having a lower notification level indicating the degree of calling attention to the operator than the first notification process. After performing the first notification process based on the detection result of the detection unit, the first notification process is switched to the second notification process.

A work vehicle according to another aspect of the present invention includes the notification device, a work machine for performing work, and a control unit on which an operation unit for operating the work machine is arranged and on which the operator rides. ..

According to the above configuration, it is possible to reduce the possibility that the behavior of the operator required for the work is obstructed by the notification.

It is a side view which shows the schematic structure of the hydraulic excavator which is an example of the work vehicle which concerns on one Embodiment of this invention. It is a block diagram which shows the schematic structure of the notification device applied to the said hydraulic excavator. It is explanatory drawing which shows an example of the display screen of the monitor provided in the said notification device. It is explanatory drawing which shows the other example of the display screen of the said monitor. It is explanatory drawing which shows an example of the display of the icon which urges the operator to wear a seat belt. It is explanatory drawing which shows the other example of the display of the said icon. It is explanatory drawing which shows still another example of the display of the said icon. It is explanatory drawing which shows still another example of the display of the said icon. It is explanatory drawing which shows still another example of the display of the said icon. It is explanatory drawing which shows still another example of the display of the said icon. It is explanatory drawing which shows still another example of the display of the said icon. It is explanatory drawing which shows an example of the display of the icon which urges the operator to sit in the cockpit. It is explanatory drawing which shows the other example of the display of the said icon. It is explanatory drawing which shows still another example of the display of the said icon. It is explanatory drawing which shows still another example of the display of the said icon. It is explanatory drawing which shows still another example of the display of the said icon. It is explanatory drawing which shows still another example of the display of the said icon. It is explanatory drawing which shows still another example of the display of the said icon. It is a flowchart which shows an example of the operation in the said notification device. It is a timing chart which shows the switching timing of the detection signal and display in the operation of FIG. It is a flowchart which shows the other example of the operation in the said notification device. It is a timing chart which shows the switching timing of the detection signal and display in the operation of FIG. It is a timing chart when the display unit displays the visual information common to each sensor. It is a flowchart which shows still another example of the operation in the said notification device. It is a timing chart which shows the switching timing of the detection signal and display in the operation of FIG. It is a flowchart which shows still another example of the operation in the said notification device. It is a timing chart which shows the switching timing of the detection signal and display in the operation of FIG. It is explanatory drawing which shows the example of the combination of the visual information to be displayed on the display part.

An embodiment of the present invention will be described below with reference to the drawings. First, an outline of a work vehicle to which the notification device of the present embodiment is applied will be described.

[1. Work vehicle]
FIG. 1 is a side view showing a schematic configuration of a hydraulic excavator 1, which is an example of a work vehicle of the present embodiment. The hydraulic excavator 1 includes a lower traveling body 2, a working machine 3, and an upper turning body 4.

Here, in FIG. 1, the direction is defined as follows. First, the direction in which the lower traveling body 2 travels straight is the front-rear direction, one side of which is "front", and the other side is "rear". In FIG. 1, as an example, the traveling motor 22 side is shown as “front” with respect to the blade 23. Further, the horizontal direction perpendicular to the front-rear direction is defined as the left-right direction. At this time, the left side is defined as "left" and the right side is defined as "right" when viewed from the operator (operator) sitting in the driver's seat 41a. Further, the gravity direction perpendicular to the front-back direction and the left-right direction is the vertical direction, the upstream side in the gravity direction is "up", and the downstream side is "down".

The lower traveling body 2 includes a pair of left and right crawlers 21 and a pair of left and right traveling motors 22. Each traveling motor 22 is a hydraulic motor. The left and right traveling motors 22 drive the left and right crawlers 21, respectively, so that the hydraulic excavator 1 can be moved forward and backward. The lower traveling body 2 is provided with a blade 23 for performing ground leveling work and a blade cylinder 23a. The blade cylinder 23a is a hydraulic cylinder that rotates the blade 23 in the vertical direction.

The working machine 3 includes a boom 31, an arm 32, and a bucket 33. By independently driving the boom 31, arm 32, and bucket 33, excavation work such as earth and sand can be performed. That is, the hydraulic excavator 1 as a work vehicle includes a work machine 3 for performing work.

The boom 31 is rotated by the boom cylinder 31a. The base end of the boom cylinder 31a is supported by the front portion of the upper swing body 4, and the boom cylinder 31a can be expanded and contracted. The arm 32 is rotated by the arm cylinder 32a. The base end of the arm cylinder 32a is supported by the tip of the boom 31, and the arm cylinder 32a can be expanded and contracted. The bucket 33 is rotated by the bucket cylinder 33a. The base end of the bucket cylinder 33a is supported by the tip of the arm 32, and the bucket cylinder 33a can be expanded and contracted. The boom cylinder 31a, the arm cylinder 32a, and the bucket cylinder 33a are composed of hydraulic cylinders.

The upper swivel body 4 is configured to be swivelable with respect to the lower traveling body 2 via a swivel bearing (not shown). A control unit 41, a swivel table 42, a swivel motor 43, an engine room 44, and the like are arranged in the upper swivel body 4. The upper swivel body 4 is swiveled via a swivel bearing by being driven by a swivel motor 43 which is a hydraulic motor.

A plurality of hydraulic pumps (not shown) are arranged on the upper swing body 4. Each hydraulic pump is driven by an engine or electric motor (not shown) inside the engine room 44. Each hydraulic pump supplies working oil (pressure oil) to a hydraulic motor (for example, left and right traveling motors 22 and a swivel motor 43) and a hydraulic cylinder (for example, a blade cylinder 23a, a boom cylinder 31a, an arm cylinder 32a, and a bucket cylinder 33a). do. Hydraulic motors and cylinders that are driven by supplying hydraulic oil from any hydraulic pump are collectively referred to as hydraulic actuators or simply actuators.

A driver's seat 41a is arranged on the control unit 41 on which the operator rides. An operation unit 41b is arranged around the driver's seat 41a. The operation unit 41b is composed of various levers, switches, buttons and the like. The hydraulic actuator is driven by the operator sitting on the driver's seat 41a and operating the operation unit 41b. As a result, the lower traveling body 2 can travel, the ground leveling work by the blade 23, the excavation work by the working machine 3, the turning of the upper turning body 4, and the like can be performed. That is, the hydraulic excavator 1 as a work vehicle includes an operation unit 41b for operating the work machine 3 and a control unit 41 on which the operator rides.

In particular, the various levers constituting the operation unit 41b include an operation lever 41b1 for driving the hydraulic actuator and a cutoff lever 41b2. The cutoff lever 41b2 is provided so as to be rotatable up and down in the vicinity of the driver's seat 41a. When the operator pushes down the cutoff lever 41b2, the cutoff sensor 53 (see FIG. 2), which will be described later, is turned on, and the operation lever 41b1 can be operated to drive a predetermined actuator. On the other hand, when the operator pulls up the cutoff lever 41b2, the cutoff sensor 53 is turned off, and even if the operator operates the operation lever 41b1, the actuator cannot be driven. When the operator tries to get off the control unit 41, the operator pulls up the cutoff lever 41b2 to make the actuator inoperable, and then leaves the control seat 41a.

[2. Notification device]
The hydraulic excavator 1 as the work vehicle of the present embodiment includes the notification device 100 shown in FIG. FIG. 2 is a block diagram showing a schematic configuration of the notification device 100. The notification device 100 includes a detection unit 50, a notification unit 60, a timing unit 70, a control unit 80, and a storage unit 90.

(2-1. Detection unit)
The detection unit 50 includes various sensors that detect the riding state of the operator's control unit 41 (see FIG. 1). That is, the notification device 100 includes a detection unit 50 that detects the riding state of the operator.

The detection unit 50 includes a seatbelt sensor 51, a seating sensor 52, and a cutoff sensor 53. The seatbelt sensor 51 detects whether or not the operator is wearing a seatbelt. The seatbelt sensor 51 outputs a detection signal that is turned off when the operator wears the seatbelt and turns on when the operator is not wearing the seatbelt. As a result, the control unit 80 can determine the wearing state (wearing / non-wearing) of the seat belt of the operator based on the detection signal from the seat belt sensor 51.

The seating sensor 52 detects whether or not the operator is seated in the driver's seat 41a. The seating sensor 52 outputs a detection signal that is turned off when the operator is seated in the driver's seat 41a and turned on when the operator is not seated in the driver's seat 41a. As a result, the control unit 80 can determine the seated state (seat / non-seat) of the operator based on the detection signal from the seating sensor 52.

The cutoff sensor 53 detects the rotational position of the cutoff lever 41b2 described above. The cutoff sensor 53 turns ON when the cutoff lever 41b2 is pushed down (rotated downward), and turns OFF when the cutoff lever 41b2 is pulled up (rotated upward). Output the detection signal. When the cutoff lever 41b2 is pushed down, the actuator is in a driveable state as described above, so that it is conceivable that the operator is seated in the driver's seat 41a. On the other hand, when the cutoff lever 41b2 is pulled up, the actuator is in a non-driving state, so it is conceivable that the operator is seated from the driver's seat 41a. Therefore, the control unit 80 can determine whether or not the operator is on the control unit 41 by determining the rotation position of the cutoff lever 41b2 based on the detection signal from the cutoff sensor 53. can.

(2-2. Notification unit)
The notification unit 60 executes notification processing based on the detection result of the detection unit 50. Here, the notification process means to call attention to the operator by notification. That is, the notification device 100 includes a notification unit 60 that executes a notification process that calls attention to the operator based on the detection result of the detection unit 50. The above notification process can be realized by, for example, display, alarm (generation of sound), generation of vibration, or the like.

Such a notification process includes a first notification process and a second notification process. The notification level is different between the first notification process and the second notification process. Here, the notification level refers to the degree of calling attention to the operator (degree of alerting). For example, a high notification level means that the degree of calling attention to the operator is high and the need for notification is high. On the other hand, when the notification level is low, it means that the degree of calling attention to the operator is low and the necessity of notification is low.

In the present embodiment, the second notification process has a lower notification level than the first notification process, and the degree of calling attention is lower than that of the first notification process. That is, the notification process executed by the notification unit 60 includes a first notification process and a second notification process having a lower notification level indicating the degree of calling attention to the operator than the first notification process.

Hereinafter, a specific configuration of the notification unit 60 will be described. The notification unit 60 includes a display unit 61, a notification unit 62, and a vibration generation unit 63.

<2-2-1. Display>
The display unit 61 includes a monitor 61a and a lamp 61b. The monitor 61a is composed of, for example, a liquid crystal display device for displaying an image, and is arranged in the vicinity of the driver's seat 41a in the control unit 41. For example, the monitor 61a has various information such as an image taken by a camera (not shown) mounted on the hydraulic excavator 1, operating time, engine speed, and the like, as well as information according to the riding condition of the operator. Display information.

FIG. 3 is an explanatory diagram showing an example of a display screen of the monitor 61a. The figure shows a state in which the visual information V including the icon V1 and the icon V2 is displayed in the area on the right side of the display screen. In the remaining area of the display screen, the photographed image of the above-mentioned camera and various information are displayed.

The icon V1 is visual information displayed as information for urging the operator to wear a seatbelt when the seatbelt sensor 51 of FIG. 2 detects that the operator is not wearing a seatbelt. The icon V2 is visual information displayed as information prompting the operator to sit down when the seating sensor 52 of FIG. 2 detects that the operator is not seated in the driver's seat 41a. As described above, the monitor 61a displays the visual information V according to the detection result of the detection unit 50 of FIG. 2 in the notification process for calling the operator's attention. From this, it can be said that the notification unit 60 has a display unit 61, and the display unit 61 displays the visual information V according to the detection result of the detection unit 50 in the notification processing.

FIG. 4 is an explanatory diagram showing another example of the display screen of the monitor 61a. The figure shows a case where one type of visual information V is displayed for displaying information for urging the operator to wear a seatbelt and displaying information for urging the operator to sit on the driver's seat 41a. .. For example, there are cases where the operator is notified to wear a seatbelt and cases where the operator is notified to sit in the driver's seat 41a, and the blinking speed of the visual information V to be displayed (time between lighting and extinguishing). By changing the interval) or the display color of the visual information V, it is possible to distinguish between the above two types of notifications in the display of one type (common) visual information V. Further, for example, when notifying the operator to wear a seatbelt, the notification level is different by changing the blinking speed of the displayed visual information V or changing the display color of the visual information V. Can be done. It should be noted that the same visual information V may be used to perform the notification process without distinguishing between the above two types of notification. Further, the details of the display of the visual information V in the notification processing will be described later.

The lamp 61b shown in FIG. 2 is composed of, for example, an LED (light emitting diode) that emits a plurality of colors. The blinking speed of the emitted light is changed or the color of the emitted light is changed depending on whether the operator is notified to wear the seatbelt or the operator is notified to sit on the driver's seat 41a. This makes it possible to distinguish between the above two types of notification. It should be noted that the light emitted may be shared and the notification process may be performed without distinguishing between the above two types of notification. Further, for example, when notifying the operator to wear a seatbelt, the notification level is changed in each of the above two types of notification by changing the blinking speed of the emitted light or changing the color of the emitted light. Can be notified differently.

<2-2-2. Notification Department>
In the notification process, the alarm unit 62 issues auditory information according to the detection result of the detection unit 50. Such a warning unit 62 includes a buzzer 62a that emits a sound, and an audio output unit 62b that outputs a text, that is, a sentence by an electronic sound. Therefore, the sound emitted by the buzzer 62a and the sound output from the voice output unit 62b constitute the auditory information. For example, when the seatbelt sensor 51 detects that the operator is not wearing a seatbelt, the alarm unit 62 continuously emits a sound having a constant frequency. On the other hand, when the seating sensor 52 detects that the operator is not seated in the driver's seat 41a, the alarm unit 62 intermittently emits a sound having a constant frequency. As a result, the operator can easily hear the above sound (auditory information) and obtain the detection result of the detection unit 50 (for example, the operator is not wearing a seatbelt or the operator is not seated). Can be recognized. By issuing the same sound, the notification process may be performed without distinguishing between the above two types of notification.

Further, even when notifying the operator to wear a seatbelt (or notifying the operator to sit on the driver's seat 41a), the frequency of the sound emitted by the buzzer 62a, the interval at which the sound is generated, and the like are set. By adjusting or changing the content of the sound output from the sound output unit 62b, it is possible to perform notification with different notification levels.

<2-2-3. Vibration generator>
The vibration generating unit 63 includes a vibrator that vibrates the operating lever 41b1 operated by the operator. It should be noted that the vibration here includes both continuous vibration and sporadic vibration (pressing). The vibration generation unit 63 vibrates the operation lever 41b1 according to the detection result of the detection unit 50 in the notification process.

For example, when the seatbelt sensor 51 detects that the operator is not wearing a seatbelt, the vibration generating unit 63 continuously vibrates the operation lever 41b1 for a predetermined period of time. On the other hand, when the seating sensor 52 detects that the operator is not seated in the driver's seat 41a, the vibration generating unit 63 vibrates the operating lever 41b1 intermittently for a predetermined period. The vibration of the operating lever 41b1 is physically transmitted to the operator as long as the operator is touching the operating lever 41b1, even if the operator is not seated in the driver's seat 41a. Therefore, the operator can easily recognize the detection result of the detection unit 50 (for example, the operator is not wearing a seatbelt or the operator is not seated) by the vibration of the operation lever 41b1. Can be done.

Further, even when notifying the operator to wear a seatbelt (or notifying the operator to sit on the driver's seat 41a), the frequency of vibration by the vibration generating unit 63 and the vibration generation interval. By adjusting the above, it is possible to perform notifications with different notification levels.

(2-3. Timekeeping unit, control unit, storage unit)
The timekeeping unit 70 measures the notification time for the notification unit 60 to execute the notification process. Such a timekeeping unit 70 is composed of, for example, a timer. That is, the notification device 100 of the present embodiment includes a timing unit 70 that measures the notification time for the notification unit 60 to execute the notification process.

The control unit 80 controls the operation of each unit of the notification device 100 and the hydraulic excavator 1 (see FIG. 1). The control unit 80 is composed of an electronic control unit called an ECU (Electronic Control Unit).

The storage unit 90 is a memory for storing the operation program of the control unit 80 and various information. Such a storage unit 90 includes a RAM (Random Access Memory), a ROM (Read Only Memory), a non-volatile memory, and the like.

[3. Display example of visual information]
Next, a display example of visual information to be displayed on the monitor 61a of the display unit 61 described above will be described.

5 to 11 show an example of displaying the icon V1 that encourages the operator to wear a seatbelt. FIG. 5 shows the lighting state and the extinguishing state of the icon V1. By lighting the icon V1, the operator can be urged to wear a seatbelt.

FIG. 6 shows a state in which the icon V1 is displayed at different blinking speeds. The notification level can be changed by changing the lighting speed of the icon V1. That is, the notification level is higher in the state of blinking 2 in which the blinking speed is faster than in the state of blinking 1 in which the blinking speed is slow because the effect of calling attention to the operator is higher. That is, by increasing the lighting speed of the icon V1, the notification level regarding the wearing of the seat belt can be increased.

Further, even when the blinking speed of the icon V1 is slow, the effect of calling the operator's attention is higher than the case where the icon V1 is constantly lit. Therefore, by blinking the icon V1, it is possible to raise the notification level regarding the wearing of the seat belt as compared with the case where the icon V1 is simply turned on.

FIG. 7 shows a state in which the icon V1 is displayed in different colors (for example, hue). More specifically, in lighting 1, icon V1 is displayed in green, in lighting 2, icon V1 is displayed in yellow, and in lighting 3, icon V1 is displayed in red. In general, it can be said that displaying in yellow rather than green and red rather than yellow is more effective in calling attention to the operator, following the color representing the signal. Therefore, the notification level increases in the order of green, yellow, and red. That is, by changing the display color of the icon V1, the notification level regarding the wearing of the seat belt can be changed.

FIG. 8 shows a state in which the icon V1 is displayed with different brightness (brightness). More specifically, lighting 1 displays the icon V1 darkly (not completely extinguished), lighting 3 displays the icon V1 brightly, and lighting 2 displays the icon with a brightness between lighting 1 and lighting 3. V1 is displayed. The brighter the icon V1, the easier it is for the operator to visually recognize the icon V1, and the higher the effect of calling attention to the operator. Therefore, it can be said that the notification level increases as the brightness of the icon V1 increases. That is, by changing the brightness of the icon V1, the notification level regarding the wearing of the seat belt can be changed.

In the present embodiment, the display color of the icon V1 is changed by changing the hue or the lightness, but the display color of the icon V1 may be changed by changing the saturation. Further, the display color of the icon V1 may be changed by changing two or more elements of hue, saturation, and lightness at the same time. That is, the display color of the icon V1 may be adjusted by changing at least one of hue, saturation, and lightness.

FIG. 9 shows a state in which the icon V1 is displayed in different sizes. More specifically, in lighting 1, icon V1 is displayed small (reduced), in lighting 3, icon V1 is displayed large (enlarged), and in lighting 2, the size between lighting 1 and lighting 3 is large. Now the icon V1 is displayed. The larger the icon V1, the easier it is for the operator to visually recognize the icon V1, and the higher the effect of calling attention to the operator. Therefore, it can be said that the notification level increases as the size of the icon V1 increases. That is, by changing the size of the icon V1, the notification level regarding the wearing of the seat belt can be changed.

FIG. 10 shows a state in which the icon V1 is displayed in a different shape. More specifically, in lighting 1, the icon V1 is displayed as an illustration (shape A) in which the operator is seated and wearing a seatbelt, and in lighting 2, the icon V1 is displayed as an illustration of the connecting portion of the seatbelt (in lighting 2). It is displayed in the shape B), and in the lighting 3, the icon V1 is displayed in an illustration (shape C) including the characters “SEAT BELT”. In the order of lighting 1 (shape A), lighting 2 (shape B), and lighting 3 (shape C), the operator can easily recognize the necessity of wearing a seatbelt by looking at the icon V1. From this, it can be said that the effect of calling attention to the operator increases in the order of lighting 1 (shape A), lighting 2 (shape B), and lighting 3 (shape C), and the notification level increases. That is, by changing the shape of the icon V1, the notification level regarding the wearing of the seat belt can be changed.

FIG. 11 shows a state in which the icon V1 is displayed with or without decoration or with the addition of different decorations. More specifically, in lighting 1, icon V1 is displayed without decoration, and in lighting 2 and 3, icon V1 is displayed with decoration. At this time, in lighting 2 and 3, the decorations are different from each other. In particular, the decoration of lighting 3 is "!!" (decoration A), which is more conspicuous than the decoration of lighting 2 "!" (Decoration B). Depending on the presence or absence of decoration and the addition of different decorations, the effect of calling attention to the operator increases in the order of lighting 1 (no decoration), lighting 2 (decoration A), and lighting 3 (decoration B), and the notification level increases. That is, the notification level regarding the wearing of the seat belt can be changed by the presence / absence of the decoration in the icon V1 and the addition of different decorations.

12 to 18 show an example of displaying the icon V2 that prompts the operator to sit on the driver's seat 41a. FIG. 12 shows the lighting state and the extinguishing state of the icon V2. By lighting the icon V2, the operator can be urged to sit down.

FIG. 13 shows a state in which the icon V2 is displayed at different blinking speeds. The notification level can be changed by changing the lighting speed of the icon V2. That is, the notification level is higher in the state of blinking 2 in which the blinking speed is faster than in the state of blinking 1 in which the blinking speed is slow because the effect of calling attention to the operator is higher. That is, by increasing the lighting speed of the icon V2, the notification level regarding sitting can be increased.

Further, even when the blinking speed of the icon V2 is slow, the effect of calling the operator's attention is higher than the case where the icon V2 is constantly lit. Therefore, by blinking the icon V2, it is possible to raise the notification level regarding sitting as compared with the case where the icon V2 is simply turned on.

FIG. 14 shows a state in which the icon V2 is displayed in different colors (for example, hue). More specifically, in lighting 1, icon V2 is displayed in green, in lighting 2, icon V2 is displayed in yellow, and in lighting 3, icon V2 is displayed in red. In general, it can be said that displaying in yellow rather than green and red rather than yellow is more effective in calling attention to the operator, following the color representing the signal. Therefore, the notification level increases in the order of green, yellow, and red. That is, by changing the display color of the icon V2, the notification level regarding sitting can be changed.

FIG. 15 shows a state in which the icon V2 is displayed with different brightness (brightness). More specifically, lighting 1 displays the icon V2 darkly (not completely extinguished), lighting 3 displays the icon V2 brightly, and lighting 2 displays the icon with a brightness between lighting 1 and lighting 3. V2 is displayed. The brighter the icon V2, the easier it is for the operator to visually recognize the icon V2, and the higher the effect of calling attention to the operator. Therefore, it can be said that the notification level increases as the brightness of the icon V2 increases. That is, by changing the brightness of the icon V2, the notification level regarding sitting can be changed.

In the present embodiment, the display color of the icon V2 is changed by changing the hue or the lightness, but the display color of the icon V2 may be changed by changing the saturation. Further, the display color of the icon V2 may be changed by changing two or more elements of hue, saturation, and lightness at the same time. That is, the display color of the icon V2 may be adjusted by changing at least one of hue, saturation, and lightness.

FIG. 16 shows a state in which the icon V2 is displayed in different sizes. More specifically, in lighting 1, icon V2 is displayed small (reduced), in lighting 3, icon V2 is displayed large (enlarged), and in lighting 2, the size between lighting 1 and lighting 3 is large. Now the icon V2 is displayed. The larger the icon V2, the easier it is for the operator to visually recognize the icon V2, and the higher the effect of calling attention to the operator. Therefore, it can be said that the notification level increases as the size of the icon V2 increases. That is, by changing the size of the icon V2, the notification level regarding sitting can be changed.

FIG. 17 shows a state in which the icon V2 is displayed in a different shape. More specifically, in lighting 1, the icon V2 is displayed as an illustration (shape A) when the driver's seat 41a is viewed from the left side, and in lighting 2, the icon V2 is displayed when the driver's seat 41a is viewed diagonally from the front. Is displayed as an illustration (shape B), and in lighting 3, the icon V2 is displayed as an illustration (shape C) including the characters "SIT DOWN". In the order of lighting 1 (shape A), lighting 2 (shape B), and lighting 3 (shape C), the operator can easily recognize the necessity of sitting by looking at the icon V2. From this, it can be said that the effect of calling attention to the operator increases in the order of lighting 1 (shape A), lighting 2 (shape B), and lighting 3 (shape C), and the notification level increases. That is, by changing the shape of the icon V2, the notification level regarding sitting can be changed.

FIG. 18 shows a state in which the icon V2 is displayed with or without decoration or with the addition of different decorations. More specifically, in lighting 1, icon V2 is displayed without decoration, and in lighting 2 and 3, icon V2 is displayed with decoration. At this time, in lighting 2 and 3, the decorations are different from each other. In particular, the decoration of lighting 3 is "!!" (decoration A), which is more conspicuous than the decoration of lighting 2 "!" (Decoration B). Depending on the presence or absence of decoration and the addition of different decorations, the effect of calling attention to the operator increases in the order of lighting 1 (no decoration), lighting 2 (decoration A), and lighting 3 (decoration B), and the notification level increases. That is, the notification level regarding sitting can be changed by the presence / absence of decoration in the icon V2 and the addition of different decorations.

As the visual information V, only the icon V1 may be displayed on the monitor 61a, and the blinking speed, color (hue, brightness), size, shape, decoration, and the like may be changed in the display of the icon V1. By doing so, as shown in FIG. 4, one type of visual information V is displayed (for example, even if the icon V2 is not displayed), a notification prompting the user to wear a seatbelt and a notification prompting the user to sit down. At the same time, it is possible to make the notification level different in each notification. The details of this point will be described later (see FIG. 23).

[4. Notification processing operation]
Next, the operation of the notification processing of the present embodiment will be described. FIG. 19 is a flowchart showing an example of the operation of the notification device 100 of the present embodiment. Further, FIG. 20 is a timing chart showing the detection signal output from the detection unit 50 and the display switching timing on the display unit 61 (monitor 61a) in the operation of FIG.

After the operator gets on the control unit 41 and starts the engine of the hydraulic excavator 1, the seating sensor 52 of the detection unit 50 detects that the operator is seated in the control unit 41a (S1), and the seatbelt sensor 51 When the cutoff sensor 53 detects that the seatbelt is worn (S2) and the cutoff lever 41b2 is in the driveable position of the actuator (also referred to as “working position” here) (S3), the notification unit 60 , The following notification processing is executed under the control of the control unit 80.

That is, the seatbelt sensor 52 detects that the operator has stood up from the driver's seat 41a (non-seating), or the seatbelt sensor 51 detects that the operator has removed the seatbelt (non-wearing) (S4). When a predetermined time elapses from the detection time (S6), the notification unit 60 executes the first notification process (S7).

For example, in FIG. 20, at time t3 after a predetermined time has elapsed from the detection that the seatbelt is not fastened at time t1, the notification unit 60 executes the first notification process. Specifically, the display unit 61a of the notification unit 60 executes the first notification processing by blinking the icon V1 in red (see, for example, "blinking 1" in FIG. 6).

Further, at the time t8 after the lapse of a predetermined time after the non-seating is detected at the time t6, the notification unit 60 executes the first notification process. Specifically, the display unit 61a of the notification unit 60 executes the first notification processing by blinking the icon V2 in red (see, for example, "blinking 1" in FIG. 13).

Next, in FIG. 19, the notification unit 60 continues to perform the first notification processing until the notification time of the first notification processing in S7 elapses. Then, when the notification time of the first notification process exceeds a predetermined time (S8), the notification unit 60 executes the second notification process (S9). That is, the notification unit 60 performs the first notification processing based on the detection result of the detection unit 50 in S4, and then switches the first notification processing to the second notification processing. In particular, after performing the first notification process, the notification unit 60 switches the first notification process to the second notification process according to the notification time of the first notification process.

For example, in FIG. 20, the first notification process started at time t3 is switched to the second notification process at time t5 after a predetermined time has elapsed from time t3. Specifically, the display unit 61a of the notification unit 60 executes the second notification processing by lighting the icon V1 in red (see, for example, “lighting 3” in FIG. 7). Further, in FIG. 20, the first notification process started at time t8 is switched to the second notification process at time t10 after a predetermined time has elapsed from time t8. Specifically, the display unit 61a of the notification unit 60 executes the second notification processing by lighting the icon V2 in red (see, for example, “lighting 3” in FIG. 14). That is, the display unit 61 switches the display state of the visual information V (icons V1, V2) between the first notification process and the second notification process.

After that, when the seating sensor 52 detects that the operator is seated in the driver's seat 41a and the seatbelt sensor 51 detects that the operator is wearing the seatbelt (S14), the notification unit 60 receives the second notification. The process ends (S15). For example, in FIG. 20, since the seatbelt sensor 51 detects that the seatbelt is worn at time t8, the display unit 61 turns off (hides) the icon V1 at time t8 and ends the second notification process. Similarly, since the seating sensor 52 detects the seating of the operator at the time t11, the display unit 61 turns off (hides) the icon V2 at the time t11 and ends the second notification process.

Then, when the cutoff sensor 53 detects that the cutoff lever 41b2 is in a position where the actuator cannot be driven (also referred to as a “non-working position” here) (S16), the notification unit 60 ends a series of notification processing. .. On the other hand, if the cut-off sensor 53 does not detect the non-working position of the cut-off lever 41b2 in S16, the above-mentioned processing after S4 is repeated.

As described above, the notification unit 60 switches the first notification processing to the second notification processing after performing the first notification processing (S7 to S9). In the second notification process (for example, notification by lighting the icon), the notification level is lower than that in the first notification process (for example, notification by blinking the icon), so that the degree of alerting to the operator by notification is higher than that of the first notification process. Is also reduced. As a result, even when the notification process continues according to the riding state of the operator, it is possible to reduce the annoyance to the operator due to the notification. Therefore, it is possible to reduce the situation where the operation of the operator required for the work is obstructed by the notification. For example, the operator feels almost annoyed by the notification of the action of removing the seat belt or standing up from the driver's seat 41a with the engine of the hydraulic excavator 1 running and visually confirming the work location by the hydraulic excavator 1. It can be done without.

In particular, in the present embodiment, the notification unit 60 switches the first notification processing to the second notification processing according to the notification time of the first notification process measured by the timekeeping unit 70 (S7 to S9). In this case, after a certain period of time has elapsed from the first notification process, the second notification process is automatically executed even if there is no instruction to switch the notification process by the operator's operation as described later, which improves convenience. Can be made to.

Further, the display unit 61 of the notification unit 60 displays visual information V (icons V1 and icon V2) according to the detection result of the detection unit 50 in the notification processing (see FIG. 3). As a result, the operator can easily recognize the detection result of the detection unit 50 by looking at the visual information V displayed on the display unit 61. For example, the operator can easily recognize by looking at the visual information V that the non-wearing of the seat belt or the non-sit on the driver's seat 41a is detected.

Further, the display unit 61 switches the display state of the visual information V between the first notification process and the second notification process (see “blinking, lighting” in FIG. 19). As a result, the degree of alerting to the operator by displaying the visual information V, that is, the above-mentioned notification level can be easily different between the first notification process and the second notification process.

In particular, the display unit 61 blinks and displays the visual information V (icons V1 and V2) in the first notification process, and lights and displays the visual information V (icons V1 and V2) in the second notification process (see FIG. 19). ). In this case, in the first notification process, the degree of alerting to the operator is relatively increased by the blinking display of the visual information V, so that the operator can easily recognize the detection result of the detection unit 50. On the other hand, in the second notification process, the degree of alerting to the operator is relatively reduced by the lighting display of the visual information V, so that the annoyance that the operator receives due to the notification can be reduced.

Further, the detection unit 50 has a seatbelt sensor 51 and a seating sensor 52 (see FIG. 2). Then, the display unit 61 displays the icons V1 and V2 in response to the detection results of the seatbelt sensor 51 and the seating sensor 52 (see FIG. 3). That is, the detection unit 50 has a plurality of sensors having different detection targets, and the display unit 61 displays the visual information V for each detection result of each sensor. As a result, the operator can easily recognize the detection result of each sensor by looking at the visual information V (icons V1 and V2). That is, the operator can easily recognize the presence / absence of notification for each sensor.

[5. Display example in the first notification process and the second notification process]
In the above, an example in which the first notification process and the second notification process are different depending on the blinking display and the lighting display of the visual information V has been described, but the first notification is performed by making the color of the displayed visual information V different. The processing and the second notification processing may be different. A specific example will be described below.

For example, the display unit 61 may display the icon V1 in red in the first notification process (see “lighting 3” in FIG. 7), and may display the icon V1 in yellow in the second notification process (FIG. 7). See "Lighting 2"). Further, the display unit 61 displays the icon V1 in a relatively bright color in the first notification process (see “lighting 3” in FIG. 8), and displays the icon V1 in a relatively dark color in the second notification process. It may be displayed (see "Lighting 1" in FIG. 8).

Similarly, the display unit 61 may display the icon V2 in red in the first notification process (see “lighting 3” in FIG. 14), and may display the icon V2 in yellow in the second notification process (FIG. 14). 14 "Lighting 2"). Further, the display unit 61 displays the icon V2 in a relatively bright color in the first notification process (see “lighting 3” in FIG. 15), and displays the icon V2 in a relatively dark color in the second notification process. It may be displayed (see "Lighting 1" in FIG. 15).

That is, in these cases, it can be said that the display unit 61 displays the visual information V in a color different from the visual information V displayed in the first notification process in the second notification process.

In this way, when the colors of the visual information V to be displayed are different between the first notification process and the second notification process, the operator can use the visual information V displayed in the first notification process and the second notification process. It becomes easy to distinguish and recognize the visual information V displayed in. In addition, since it is easy to indicate the difference in the notification level by the difference in color (for example, green, yellow, red, etc. in FIG. 7), the notification level is surely different between the first notification process and the second notification process. , It is possible to surely realize the second notification process having a lower notification level than the first notification process.

Further, the first notification process and the second notification process may be different by changing the form of the visual information V to be displayed. A specific example will be described below. Here, it is assumed that the form of the visual information V includes the shape, size, and presence / absence (addition / deletion) of the visual information V.

For example, the display unit 61 may display the icon V1 in the largest size in the first notification process (see “lighting 3” in FIG. 9), and may display the icon V1 in the smallest size in the second notification process (FIG. 9). See "Lighting 1"). Further, the display unit 61 displays the icon V1 with the lighting 3 (shape C) of FIG. 10 in the first notification processing, and displays the icon V1 with the lighting 1 (shape A) of FIG. 10 in the second notification processing. You may. Further, the display unit 61 displays the icon V1 in the lighting 3 (decoration B) of FIG. 11 in the first notification processing, and displays the icon V1 in the lighting 1 (no decoration) in FIG. 11 in the second notification processing. You may.

Similarly, the display unit 61 may display the icon V2 in the largest size in the first notification process (see “lighting 3” in FIG. 16), and may display the icon V2 in the smallest size in the second notification process (FIG. 16). See “Lighting 1” in 16.). Further, the display unit 61 displays the icon V2 in the lighting 3 (shape C) of FIG. 17 in the first notification processing, and displays the icon V2 in the lighting 1 (shape A) of FIG. 17 in the second notification processing. You may. Further, the display unit 61 displays the icon V2 with the lighting 3 (decoration B) in FIG. 18 in the first notification processing, and displays the icon V2 with the lighting 1 (no decoration) in FIG. 18 in the second notification processing. You may.

That is, in these cases, it can be said that the display unit 61 displays the visual information V in a form different from the visual information V displayed in the first notification process in the second notification process.

In this way, when the form (shape, size, presence / absence / type of decoration) of the visual information V to be displayed is different between the first notification process and the second notification process, the operator performs the first notification process. It becomes easy to distinguish and recognize the displayed visual information V and the visual information V displayed in the second notification process. Further, since it is easy to express the difference in the notification level by the difference in the form (for example, the shapes A to C in FIG. 10), the notification level is surely different between the first notification process and the second notification process, and the notification level is different. It is possible to reliably realize the second notification process having a lower notification level than the first notification process.

[6. Preliminary notification]
FIG. 21 is a flowchart showing another example of the operation in the notification device 100 of the present embodiment. Further, FIG. 22 is a timing chart showing the detection signal output from the detection unit 50 and the display switching timing on the display unit 61 (monitor 61a) in the operation of FIG. 21. FIG. 21 is different from the operation shown in FIG. 19 in that the third notification process of S5 is performed before the first notification process of S7 is performed. Hereinafter, only the differences from FIGS. 19 and 20 will be described.

In S4, when the detection unit 50 detects that the operator is not seated or the seatbelt is not fastened, the notification unit 60 immediately executes the third notification process (S5). That is, the notification unit 60 executes a third notification process as a preliminary notification process before the notification process (first notification process in S7) based on the detection result of the detection unit 50.

For example, in FIG. 22, when the non-wearing of the seat belt is detected at time t1, the notification unit 60 executes the third notification process. Specifically, the display unit 61a of the notification unit 60 executes the third notification process by lighting and displaying the icon V1 (see, for example, “lighting 2” in FIG. 7). Further, when non-seating is detected at time t6, the notification unit 60 executes the third notification process. Specifically, the display unit 61a of the notification unit 60 executes the third notification process by lighting and displaying the icon V2 (see, for example, “lighting 2” in FIG. 14).

Then, when a predetermined time elapses from the detection time of the detection unit 50 in S4 (S6), the notification unit 60 executes the first notification process (S7).

In the first notification process, as described above, the display unit 61 of the notification unit 60 blinks and displays the visual information (icons V1 and V2). The degree of alerting to the operator is higher in the case of blinking display than in the case of lighting and displaying the visual information V, and the operator is more likely to recognize the visual information V in the latter case. Therefore, it can be said that the third notification process for lighting and displaying the visual information V has a lower notification level than the first notification process for blinking and displaying the visual information V.

As described above, the third notification process is executed as the preliminary notification process in S5 before the notification process (first notification process) in S7, so that the operator can perform the first notification process in the future. While recognizing in advance that there is a risk of execution, the seatbelt can be removed and a visual confirmation work can be performed, and the situation where the operator is confused by the sudden first notification process can be reduced.

Further, since the third notification process has a lower notification level and a lower degree of alerting than the first notification process, it is possible to reduce the situation where the preliminary notification called the third notification process causes annoyance to the operator.

[7. Display of common visual information]
FIG. 23 shows the visual information V displayed by the display unit 61 in the notification processing (first notification processing, second notification processing) and preliminary notification processing (third notification processing), which is common to each sensor constituting the detection unit 50. The timing chart when displaying by visual information (icon) is shown. For example, in the flowchart shown in FIG. 21, the display unit 61 displays the icon V1 to be lit in red in the third notification process of S5 (see, for example, “lighting 3” in FIG. 7), and the first notification of S7. In the process, the icon V1 is displayed to blink slowly in red (see, for example, “blinking 1” in FIG. 6), and in the second notification process of S9, the icon V1 is displayed to be lit in red (for example, “blinking 1” in FIG. 7). See lighting 3 "). Here, the second notification process is performed when the detection signal of at least one of the seatbelt sensor 51 and the seating sensor 52 is ON (when at least one of the non-wearing and non-seatning seatbelts is detected by the sensor). ) Suppose it is executed.

As described above, the detection unit 50 has a seatbelt sensor 51 and a seating sensor 52 (see FIG. 2). In this case, the display unit 61 displays the detection results of the seatbelt sensor 51 and the seating sensor 52 with common visual information V (for example, icon V1) (see FIG. 4). That is, the detection unit 50 has a plurality of sensors having different detection targets, and the display unit 61 displays the detection result of each sensor with the shared visual information V. In this configuration, the detection result (non-wearing / non-seating) by any of the sensors can be recognized by the operator by displaying a minimum number of visual information Vs. Such display of visual information V is very effective when there are certain restrictions such as the display screen of the display unit 61 being small or the display area (space) of visual information V being limited in the display screen. It becomes.

[8. About event identification]
FIG. 24 is a flowchart showing still another example of the operation in the notification device 100 of the present embodiment. Further, FIG. 25 is a timing chart showing the detection signal output from the detection unit 50 and the display switching timing on the display unit 61 (monitor 61a) in the operation of FIG. 24. In FIG. 24, in the second notification process of S9, when there is an event change, that is, when there is a change in the detection result of each sensor of the detection unit 50, the second notification can be identified so that the change can be identified. It differs from the operation shown in FIG. 21 in that the notification level of the process is changed. Hereinafter, only the differences from FIGS. 21 to 23 will be described.

If there is a change in the detection state of the detection unit 50 after the notification unit 60 executes the second notification processing in S9 (S10), the notification unit 60 sets the notification level of the second notification processing according to the detection result. Change (S12). Then, the processing after S10 is repeated, and when all the detection states of the detection unit 50 change from detection ON to detection OFF in S13, and when the detection state does not change in S10 for a predetermined time, the above-mentioned Move to S14.

For example, at times t5 to t6 in FIG. 25, only the non-wearing of the seatbelt is detected by the seatbelt sensor 51 (belt detection ON, seating detection OFF). In this case, the display unit 61 of the notification unit 60 displays the green icon V1 as visual information V (see “lighting 1” in FIG. 7). When non-seating is further detected by the seating sensor 52 at time t6 (belt detection ON, seating detection ON), the display unit 61 displays the red icon V1 as visual information V (“lighting 3” in FIG. 7). reference). By changing the display color of the icon V1 from green to red, the effect of alerting the operator is improved. That is, in this case, the notification level of the second notification process is increased.

When the seatbelt sensor 51 detects that the seatbelt is worn at time t8 (belt detection OFF, seating detection ON), the display unit 61 displays the yellow icon V1 as visual information V (“lighting” in FIG. 7). 2 ”). By changing the display color of the icon V1 from red to yellow, the effect of alerting the operator is reduced. That is, in this case, the notification level of the second notification process is lowered. When seating is detected by the seating sensor 52 at time t13, all the detection states of each sensor in the detection unit 50 are in the detection OFF state, so that the process proceeds to S14.

As described above, the notification unit 60 changes the notification level of the second notification processing according to the detection result by the detection unit 50. As a result, the operator can easily recognize that the detection result by the detection unit 50 has changed by the notification (display of the visual information V) by the second notification processing. That is, the operator can easily identify the event detected by the detection unit 50 by the notification by the second notification processing.

[9. Notification processing when the detection status changes]
FIG. 26 is a flowchart showing still another example of the operation in the notification device 100 of the present embodiment. Further, FIG. 27 is a timing chart showing the detection signal output from the detection unit 50 and the display switching timing on the display unit 61 (monitor 61a) in the operation of FIG. 26. FIG. 26 is different from the operation shown in FIG. 24 in that the fourth notification process is further executed when an event change occurs in the second notification process of S9. Hereinafter, only the differences from FIGS. 24 and 25 will be described.

If there is a change in the detection state of the detection unit 50 after the notification unit 60 executes the second notification processing in S9 (S10), the notification unit 60 executes the fourth notification processing (S11). After that, the notification unit 60 changes the notification level of the second notification process according to the detection result (S12). Then, the processing after S10 is repeated, and when all the detection states of the detection unit 50 change from detection ON to detection OFF in S13, and when the detection state does not change in S10 for a predetermined time, the above-mentioned Move to S14.

For example, at times t5 to t6 in FIG. 27, only the non-wearing of the seatbelt is detected by the seatbelt sensor 51 (belt detection ON, seating detection OFF). In this case, the display unit 61 of the notification unit 60 displays the green icon V1 as visual information V (see “lighting 1” in FIG. 7). When non-seating is further detected by the seating sensor 52 at time t6 (belt detection ON, seating detection ON), the display unit 61 blinks the icon V1 at high speed as the fourth notification process (“FIG. 6” in FIG. Blinking 2 "). The high-speed blinking display of the icon V1 greatly enhances the effect of alerting the operator. That is, in this case, the notification level is significantly increased by the fourth notification process.

After that, at time t7, since the detection state of the detection unit 50 does not change from time t6, the display unit 61 displays the red icon V1 as visual information V as the second notification process (“lighting” in FIG. 7). 3 ”). Due to the change from the high-speed blinking of the icon V1 to the red display, the notification level is temporarily lowered, but the notification level is higher than that of the second notification processing at times t5 to t6.

When the seatbelt sensor 51 detects that the seatbelt is worn at time t8 (belt detection OFF, seating detection ON), the display unit 61 blinks the icon V1 again at high speed as the fourth notification process (FIG. FIG. See "Blinking 2" in 6). The notification level rises again due to the high-speed blinking display of the icon V1.

After that, at time t9, since the detection state of the detection unit 50 does not change from time t8, the display unit 61 displays the yellow icon V1 as visual information V as the second notification process (“lighting” in FIG. 7). 2 ”). Due to the change from the high-speed blinking of the icon V1 to the yellow display, the notification level is temporarily lowered, but the notification level is higher than that of the second notification processing at times t5 to t6. When seating is detected by the seating sensor 52 at time t13, all the detection states of each sensor in the detection unit 50 are in the detection OFF state, so that the process proceeds to S14.

As described above, when the detection result by the detection unit 50 changes, the notification unit 60 executes the notification processing indicating that the detection result has changed as the fourth notification process. As a result, the operator can easily recognize that the detection result by the detection unit 50 has changed by the notification by the fourth notification process.

In FIG. 27, the notification level of the fourth notification process is higher than the notification level of the first notification process (see the vertical axis of FIG. 27), but may be the same as the notification level of the first notification level. That is, in this case, it can be said that the notification level of the fourth notification process is equal to or higher than the notification level of the first notification process. By setting the notification level of the fourth notification process in this way, the operator can surely recognize that the detection result by the detection unit 50 has changed by the notification by the fourth notification process.

FIG. 28 shows an example of a combination of visual information V (icon V1) displayed on the display unit 61 in the first notification process to the fourth notification process described above. As shown in the figure, by changing the display method of the visual information V, the second notification process having a lower notification level than the first notification process can be executed. In addition, it is possible to realize a third notification process having a lower notification level than the first notification process. Further, it is possible to realize a fourth notification process in which the notification level is equal to or higher than the first notification process.

As described above, the hydraulic excavator 1 as the work vehicle of the present embodiment includes the above-mentioned notification device 100, the work machine 3 shown in FIG. 1, and the control unit 41. As a result, even when the engine of the hydraulic excavator 1 is running, the operator can take off the seat belt or stand up from the driver's seat 41a to visually check the work location of the hydraulic excavator 1, which is annoying due to the notification. You can do it with almost no feeling.

[10. others〕
In the present embodiment, an example in which the notification unit 60 switches the first notification processing to the second notification processing according to the notification time of the first notification processing timed by the timing unit 70 has been described, but the switching of the notification processing is performed. , Not limited to such examples. For example, the notification unit 60 may switch the notification process based on the operation of the operator.

Specifically, the notification unit 60 switches the first notification process to the second notification process based on a signal (operation signal) generated when the operation lever 41a or a switch (not shown) is operated by the operator. You may. In this case, for example, the operation amount of the operation lever 41a, the ON / OFF switching of the switch, the volume operation amount of the accelerator dial (not shown) for changing the engine speed, the screen switching operation of the monitor 61a, and the like are controlled. The notification process is switched in the notification unit 60 based on the control signal from the control unit 80 that is input to the unit 80 and responds to the operation signal.

Further, the notification unit 60 may switch the notification process based on the amount of operation when the work machine 3 or the like is operated by the operation of the operator. For example, when the work machine 3 is operated by the operation of the operator, a detection signal by an angle sensor or an acceleration sensor (all not shown) provided on the boom 31, arm 32, bucket 33, boom cylinder 31a, arm cylinder 32a, A detection signal from a pressure sensor (not shown) that detects the pressure of the bucket cylinder 33a or a stroke sensor (not shown) that detects expansion and contraction of the boom cylinder 31a, arm cylinder 32a, and bucket cylinder 33a is input to the control unit 80. The control unit 80 recognizes the operating amount of the working machine 3 based on these detection signals. When the control signal based on the operation amount is input from the control unit 80 to the notification unit 60, the notification unit 60 can switch the notification processing based on the operation amount.

In addition, a changeover switch for switching the notification process may be separately provided, and the notification unit 60 may switch the notification process by using the operation of the changeover switch as a trigger. For example, a switching button capable of switching the notification processing may be displayed on the screen of the touch panel type monitor 61a, and the notification unit 60 may switch the notification processing when the operator presses the switching button on the screen. good. Further, a mechanical switching button may be provided separately from the monitor 61a, and the notification unit 60 may switch the notification processing by pressing the switching button by the operator.

Of course, it is also possible to perform the notification processing by appropriately combining the configuration, processing, display, and the like described in the present embodiment.

In the present embodiment, the hydraulic excavator 1 which is a construction machine has been described as an example of the work vehicle, but the work vehicle is not limited to the hydraulic excavator and may be another construction machine such as a wheel loader. Further, the work vehicle may be an agricultural machine such as a combine harvester.

Although the embodiments of the present invention have been described above, the scope of the present invention is not limited to this, and can be extended or modified without departing from the gist of the invention.

The present invention can be used, for example, in construction machinery and agricultural machinery.

1 Hydraulic excavator (working vehicle)
3 Working machine 41 Control unit 50 Detection unit 60 Notification unit 61 Display unit 70 Timekeeping unit 100 Notification device V Visual information

Claims (15)

A detector that detects the ride status of the operator and
The notification process includes a notification unit that executes a notification process that calls attention to the operator based on the detection result of the detection unit.
First notification processing and
The second notification process, which has a lower notification level indicating the degree of calling attention to the operator than the first notification process, is included.
The notification unit is a notification device that switches the first notification processing to the second notification processing after performing the first notification processing based on the detection result of the detection unit. It is equipped with a timekeeping unit that measures the notification time for executing the notification process.
The notification device according to claim 1, wherein the notification unit switches the first notification processing to the second notification processing according to the notification time of the first notification process after performing the first notification process. .. The notification unit has a display unit and has a display unit.
The notification device according to claim 1 or 2, wherein the display unit displays visual information according to the detection result of the detection unit in the notification processing. The notification device according to claim 3, wherein the display unit switches the display state of the visual information between the first notification process and the second notification process. The display unit is
In the first notification process, the visual information is blinked and displayed.
The notification device according to claim 4, wherein the visual information is lit and displayed in the second notification process. The notification device according to any one of claims 3 to 5, wherein the display unit displays visual information in a color different from the visual information displayed in the first notification processing in the second notification processing. The notification process according to any one of claims 3 to 6, wherein the display unit displays visual information in a form different from the visual information displayed in the first notification process in the second notification process. The detection unit has a plurality of sensors having different detection targets, and the detection unit has a plurality of sensors.
The notification device according to any one of claims 3 to 7, wherein the display unit displays the visual information for each detection result of each sensor. The detection unit has a plurality of sensors having different detection targets, and the detection unit has a plurality of sensors.
The notification device according to any one of claims 3 to 7, wherein the display unit displays the detection result of each sensor with the common visual information. The notification device according to any one of claims 1 to 9, wherein the notification unit executes a third notification process as a preliminary notification process before the notification process based on the detection result of the detection unit. The notification device according to claim 10, wherein the third notification process has a lower notification level than the first notification process. The notification device according to any one of claims 1 to 11, wherein the notification unit changes the notification level of the second notification process according to the detection result of the detection unit. The notification device according to any one of claims 1 to 12, wherein the notification unit executes a notification process indicating that the detection result has changed when the detection result by the detection unit changes as the fourth notification process. .. The notification device according to claim 13, wherein the notification level of the fourth notification process is equal to or higher than the notification level of the first notification process. The notification device according to any one of claims 1 to 14,
The work machine that performs the work and
A work vehicle in which an operation unit for operating the work machine is arranged, and a control unit on which the operator rides is provided.

Images