JP7152133B2 - Excavator - Google Patents

Description

The present invention relates to excavators.

2. Description of the Related Art Conventionally, an excavator that calculates a driver's fatigue level is known (see Patent Literature 1). This excavator changes the operating mode of the driving support system to the fatigue processing mode when it is determined that the degree of fatigue exceeds the threshold. In the fatigue processing mode, the area monitored by the surveillance camera is expanded. This is based on the assumption that the driver's field of vision is narrowed in a fatigued state.

JP 2011-38346 A

However, the excavator of Patent Document 1 calculates the degree of fatigue of the driver based on the time the driver performed the turning operation, the time the driver performed the traveling operation, and the time the driver performed the digging operation. do. As a result, the degree of fatigue of the driver cannot be accurately grasped, and there is a possibility that a state in which the driver's field of vision is narrowed cannot be detected.

In addition, the excavator of Patent Document 1 merely changes the operation mode of the driving support system even when it is determined that the degree of fatigue exceeds the threshold, thereby eliminating the state in which the driver's field of vision is narrowed due to fatigue. It may not be possible.

In view of the above, it is desirable to provide an excavator that can accurately detect the biological condition of an operator who is unsuitable for excavator operation, and can eliminate the biological condition.

An excavator according to an embodiment of the present invention includes a lower traveling body, an upper revolving body rotatably mounted on the lower traveling body, an attachment attached to the upper revolving body, and an attachment provided on the upper revolving body. a cabin, an operation lever installed in the cabin, a biological information acquisition device for acquiring biological information of a driver in the cabin, a working environment adjustment device capable of adjusting a working environment in the cabin, and and a control device capable of controlling the work environment adjustment device, wherein the control device identifies a driver to generate identification information, and the arousal level is determined based on the driver's biological information acquired by the biological information acquisition device. If it is determined that the driver's arousal level is below the predetermined level, the working environment adjustment device in the cabin provided in the upper swing structure is adjusted to improve the driver's working environment so that the driver's arousal level exceeds the predetermined level. adjust.

By the means described above, it is possible to provide an excavator that can accurately detect the biological condition of the operator unsuitable for driving the excavator and eliminate the biological condition.

It is a side view of a shovel. 2 is a diagram showing a configuration example of a basic system mounted on the excavator of FIG. 1; FIG. It is a perspective view of the driver's seat installed in the cabin. 9 is a flowchart of work environment change processing; 8 is a flowchart of a specific example of work environment change processing; 9 is a flowchart of another specific example of work environment change processing; FIG. 11 is a flowchart of still another specific example of work environment change processing; FIG.

FIG. 1 is a side view showing a configuration example of a shovel according to an embodiment of the present invention. An upper revolving body 3 is mounted on a lower running body 1 of the excavator via a revolving mechanism 2 . A boom 4 is attached to the upper swing body 3 . An arm 5 is attached to the tip of the boom 4 , and a bucket 6 is attached to the tip of the arm 5 .

The boom 4, arm 5, and bucket 6 constitute attachments and are hydraulically driven by boom cylinders 7, arm cylinders 8, and bucket cylinders 9, respectively.

A cabin 10 as a driver's cab is mounted on the upper swing body 3 . An engine 11 is mounted behind the cabin 10 as a power source for the shovel. A controller 30, a display device 40, a biological information acquisition device 45, a work environment adjustment device 46, an imaging device 47, a communication device 48, an alerting device 49, and the like are installed in the cabin 10. FIG.

The controller 30 is a control device that controls the drive of the excavator. In this embodiment, the controller 30 is composed of a microcomputer including a CPU and memory. Various functions of the controller 30 are implemented by the CPU executing programs stored in the memory.

The display device 40 displays various image information according to commands from the controller 30 . In this embodiment, the display device 40 is an in-vehicle liquid crystal display connected to the controller 30 .

The biometric information acquisition device 45 acquires biometric information of the driver sitting in the driver's seat SE. The biological information acquisition device 45 includes at least one of a blood pressure detection device, a pulse detection device, a heart rate detection device, a near-infrared absorption spectrum detection device, a bioimpedance detection device, a thermo camera, and a body pressure distribution detection device. The biometric information acquisition device 45 may be attached to a mobile terminal that can be carried by the driver.

The work environment adjustment device 46 adjusts the work environment inside the cabin 10 . The working environment adjusting device 46 includes, for example, at least one of an air conditioner, a seat vibrator, a seat cooler, a seat heater, and a lumbar support.

The imaging device 47 is, for example, a camera having an imaging element such as a CCD or CMOS, is installed inside the cabin 10, and is attached with the lens facing the operator's face. The imaging device 47 photographs the operator's face and supplies image information to the controller 30 . The imaging device 47 can also function as the biological information acquisition device 45 . In this case, the imaging device 47 acquires image information regarding the driver's blinks, line of sight, eye movement, head movement, yawning, sitting posture, expression (face) distortion, etc., as biometric information.

The communication device 48 is a device that controls communication between the excavator and the outside. In this embodiment, the communication device 48 controls wireless communication between the excavator and the management center through a satellite communication line, a mobile phone communication line, a short-range wireless communication line, or the like.

The attention calling device 49 is a device for calling the driver's attention. Attention calling device 49 includes at least one of a speaker, a buzzer, and an LED lamp. The alert device 49 may be the display device 40 . In this embodiment, the alerting device 49 is a speaker and display device 40 installed within the cabin 10 .

FIG. 2 is a diagram showing a configuration example of a basic system mounted on the excavator of FIG. In FIG. 2, mechanical power transmission lines are indicated by double lines, hydraulic oil lines are indicated by thick solid lines, pilot lines are indicated by dashed lines, and electric drive/control lines are indicated by thin solid lines.

The engine 11 is a diesel engine that employs isochronous control that maintains a constant engine speed regardless of changes in engine load. The fuel injection amount, fuel injection timing, boost pressure, etc. in the engine 11 are controlled by the engine controller unit 50 .

The engine 11 is connected to a main pump 14 and a pilot pump 15 as hydraulic pumps. The main pump 14 is connected to a control valve 17 via a hydraulic oil line.

The control valve 17 is a hydraulic control device that controls the hydraulic system of the excavator. The control valve 17 is connected to hydraulic actuators such as a right travel hydraulic motor, a left travel hydraulic motor, a boom cylinder 7, an arm cylinder 8, a bucket cylinder 9, and a turning hydraulic motor. The turning hydraulic motor may be a turning motor generator.

Pilot pump 15 is connected to operating device 26 via a pilot line. The operating device 26 includes an operating lever and an operating pedal. The operating device 26 is connected to the control valve 17 via a pilot line.

The pressure sensor 29 detects the operation content of the operating device 26 in the form of pressure. The pressure sensor 29 outputs detection values to the controller 30 .

A display device 40 is connected to the controller 30 . The display device 40 may be connected to the controller 30 via a communication network such as CAN, or may be connected to the controller 30 via a dedicated line. The display device 40 has an image display section 41 and a switch panel 42 as an input section. The switch panel 42 is a panel containing various hardware switches.

The display device 40 operates by being supplied with power from the storage battery 70 . The storage battery 70 is charged with electric power generated by the alternator 11 a (generator) of the engine 11 . The power of the storage battery 70 is also supplied to the controller 30, the biological information acquisition device 45, the work environment adjustment device 46, the imaging device 47, the communication device 48, the attention calling device 49, and the like. A starter 11 b of the engine 11 is driven by electric power from the storage battery 70 to start the engine 11 .

An engine controller unit 50 that controls the engine 11 transmits data representing the state of the engine 11 such as the coolant temperature to the controller 30 . The regulator 14 a of the main pump 14 transmits data representing the swash plate tilt angle to the controller 30 . The discharge pressure sensor 14 b transmits data representing the discharge pressure of the main pump 14 to the controller 30 . An oil temperature sensor 14c provided in a line between the hydraulic oil tank and the main pump 14 transmits data representing the temperature of the hydraulic oil flowing through the line to the controller 30. The pressure sensor 29 transmits data representing the pilot pressure generated when the operating device 26 is operated to the controller 30 . The controller 30 can store these data in a temporary storage unit (memory) and transmit them to the display device 40 when necessary.

The engine speed adjustment dial 75 is a dial for adjusting the speed of the engine 11 . The engine speed adjustment dial 75 transmits data indicating the set state of the engine speed to the controller 30 . The engine speed adjustment dial 75 is configured to switch the engine speed in four stages of SP mode, H mode, A mode, and idling mode. The SP mode is a speed mode that is selected when priority is given to work volume, and utilizes the highest engine speed. The H mode is a rotational speed mode that is selected when it is desired to achieve both work load and fuel efficiency, and utilizes the second highest engine rotational speed. The A mode is a rotational speed mode that is selected when it is desired to operate the excavator with low noise while giving priority to fuel consumption, and uses the third highest engine rotational speed. The idling mode is a rotational speed mode selected when the engine 11 is to be in an idling state, and utilizes the lowest engine rotational speed. The engine speed of the engine 11 is controlled to be constant at the engine speed in the speed mode set by the engine speed adjustment dial 75 .

The biometric information acquisition device 45 includes a heart rate detection device 45a and a bioimpedance detection device 45b. The working environment adjusting device 46 includes a lumbar support 46a, a seat cooler 46b, a seat heater 46c, and an air conditioner 46d. The biometric information acquisition device 45 outputs the detected value to the controller 30 . The work environment adjustment device 46 operates according to control commands from the controller 30 . The work environment adjustment device 46 may be manually operated via the switch panel 42 or the like.

Next, an arrangement example of the biological information acquisition device 45 and the work environment adjustment device 46 will be described with reference to FIG. FIG. 3 is a perspective view of the driver's seat SE installed inside the cabin 10. As shown in FIG.

The heart rate detection device 45a is a device that detects the driver's heart rate, and is built in the backrest of the driver's seat SE. Specifically, they are embedded in the backrest so that the electrodes are exposed. The heart rate detection device 45a is not additionally attached to the driver's seat SE, but is formed integrally with the driver's seat SE, so that it does not deteriorate the sitting comfort.

The bioimpedance detection device 45b is a device that detects the bioimpedance of the driver, and mainly includes a left electrode 45bL and a right electrode 45bR. The left electrode 45bL is exposed on the surface of the grip portion of the left operating lever 26AL, and the right electrode 45bR is exposed on the surface of the grip portion of the right operating lever 26AR. This is so that the driver's palm and the electrodes are in contact with each other. The bioelectrical impedance detection device 45b is not additionally attached to the operation lever 26A, but is formed integrally with the operation lever 26A, so that the operability is not deteriorated.

3 includes not only the heart rate detector 45a and the bioimpedance detector 45b, but also a blood pressure detector, a pulse detector, a near-infrared absorption spectrum detector, a thermo camera, and body pressure distribution. At least one of the detection devices may be included. Also, the biometric information acquisition device 45 may be attached to a mobile terminal that can be carried by the driver. Any one of heart rate detection device 45a, bioimpedance detection device 45b, blood pressure detection device, pulse detection device, near-infrared absorption spectrum detection device, thermo camera, body pressure distribution detection device, and portable terminal may be used. .

The lumbar support 46a is a device for adjusting the shape of the lower portion of the backrest of the driver's seat SE (the portion against which the waist rests), and is built in the lower portion of the backrest of the driver's seat SE. In this embodiment, it is mainly composed of an air bag, an air tube, an air pump, an air valve, and the like. The shape of the lower part of the backrest can be changed by adjusting the expansion of the air bag with the air pump and air valve.

The seat cooler 46b is a device that blows cool air toward at least one of the buttocks and back of the driver sitting in the driver's seat SE. This embodiment mainly includes a blower fan 46b1 built in the lower portion of the driver's seat SE. Blower fan 46b1 draws in air from suction hole 46b2 formed in the lower front surface of driver's seat SE, and discharges the air from a plurality of discharge holes 46b3 formed in the seat surface of driver's seat SE.

The seat heater 46c is a device that heats the surface of the driver's seat SE. In this embodiment, it is configured to heat the central portions of the seat surface and the backrest surface of the driver's seat SE. FIG. 3 shows the portion heated by the seat heater 46c with a dot pattern.

The air conditioner 46 d is a device that adjusts the temperature inside the cabin 10 . This embodiment mainly includes a blower fan 46d1 and outlets 46d2 to 46d4. When lowering the temperature inside the cabin 10, the blower fan 46d1 sends the air taken in from inside or outside the cabin 10 toward the evaporator, and the air cooled at the evaporator is blown out from at least one of the outlets 46d2 to 46d4. Let The outlet 46 d 2 is installed in the front part inside the cabin 10 . The outlet 46 d 3 is installed at the rear part inside the cabin 10 . The air outlet 46d4 is installed so as to blow air toward the head of the driver sitting on the driver's seat SE. Each of the outlets is configured to automatically switch between opening and closing. Exhaust heat from the engine 11 is used to raise the temperature in the cabin 10 .

3 may include not only the lumbar support 46a, the seat cooler 46b, the seat heater 46c and the air conditioner 46d, but also a seat vibrator and the like. Any one of the lumbar support 46a, the seat cooler 46b, the seat heater 46c, the air conditioner 46d, and the seat vibrator may be used.

Next, referring to FIG. 4, a process of changing the working environment in the cabin 10 by the controller 30 based on the biological information of the driver (hereinafter referred to as "work environment changing process") will be described. FIG. 4 is a flowchart of work environment change processing. The controller 30 repeatedly executes this work environment change process at a predetermined control cycle while the shovel is in operation.

First, the controller 30 acquires the driver's biological information (step ST1). In this embodiment, the controller 30 uses the biometric information acquisition device 45 to acquire the biometric information of the driver.

Then, the controller 30 determines whether or not a predetermined condition is satisfied based on the acquired biological information (step ST2). The predetermined condition is, for example, that the driver's degree of fatigue, stress, or discomfort exceeds a predetermined level, or that the driver's degree of comfort, alertness, alertness, or the like falls below a predetermined level. . A criterion for determining whether or not the predetermined condition is satisfied is set in advance using at least one biometric information value. In determining whether or not a predetermined condition is satisfied, values related to excavator operation such as lever operation amount and lever operation direction, values related to the state of excavator components such as vehicle body tilt angle, boom angle, engine speed, etc. Values other than biometric information values, such as working environment values such as temperature and atmospheric pressure, may additionally be used. Thereby, the controller 30 can perform factor analysis of changes in the driver's biological information. For example, it is possible to analyze the relationship between the duration of the same work and the biological information, the relationship between the outside temperature and the biological information, and the like.

For example, based on the output of the heart rate detection device 45a, the controller 30 determines that the stress level of the driver exceeds a predetermined level when the cumulative time in which the heart rate of the driver exceeds the threshold exceeds a predetermined time. I judge. Alternatively, the controller 30 may determine that the driver's degree of fatigue exceeds a predetermined level based on the output of the bioimpedance detection device 45b when the bioimpedance of the driver exceeds the threshold. Alternatively, the controller 30 may determine that the driver's wakefulness is below a predetermined level based on the output of the imaging device 47 when the number of blinks per unit time exceeds a threshold.

When determining that the predetermined condition is not satisfied (NO in step ST2), the controller 30 terminates the current work environment change process without changing the work environment.

When determining that the predetermined condition is satisfied (YES in step ST2), the controller 30 changes the working environment (step ST3). In this embodiment, controller 30 uses work environment adjustment device 46 to change the current work environment in cabin 10 to another work environment. This is to bring the driver's biological condition close to a biological condition suitable for excavator driving. For example, when the controller 30 determines that the degree of fatigue of the driver exceeds a predetermined level, the controller 30 changes the working environment so that the degree of fatigue falls below the predetermined level. Alternatively, when it is determined that the driver's arousal level is below a predetermined level, the working environment is changed so that the arousal level exceeds the predetermined level. Changing the work environment may include stimulating the driver.

After that, the controller 30 transmits the biological information of the driver to the management center, and activates the alerting device 49 (step ST4). In this embodiment, the controller 30 associates the biological information acquired by the biological information acquiring device 45 with the identification information of the driver, and sends the biological information associated with the identification information to an external management center via the communication device 48. Send. However, only biometric information may be transmitted to the management center. The controller 30 may transmit at least one of the biometric information for a predetermined period before the predetermined condition is satisfied and the biometric information for the predetermined period after the predetermined condition is satisfied to the management center.

When associating the identification information with the biometric information, the controller 30 displays a text message such as "Please enter your ID number" on the image display unit 41 of the display device 40 when the engine is started, and prompts you to enter the ID number. request the person. Controller 30 may identify the driver in other ways. The controller 30 may authenticate the driver using fingerprint authentication technology, iris authentication technology, or the like. The controller 30 may cause the image display section 41 of the display device 40 to display information about the satisfaction of the predetermined condition, the change of the work environment, and the like, and may also cause the speaker to output audio. However, at least one of the transmission of the biometric information and the operation of the alerting device 49 may be omitted.

With this configuration, the controller 30 can accurately detect an operator's biological condition unsuitable for excavator operation (hereinafter referred to as "non-optimal biological condition") and eliminate the non-optimal biological condition. The non-optimal biological state is, for example, a state in which the driver's degree of fatigue, stress, discomfort, etc. exceeds a predetermined level, or a state in which the driver's comfort, alertness, arousal, etc. is below a predetermined level. is.

By using the biological information, the controller 30 can detect that the driver is in a non-optimal biological state without the driver being aware of it. Therefore, the non-optimal biological state can be resolved without the driver being aware of it. For example, the controller 30 can change the working environment within the cabin 10 at appropriate times to refresh the driver's mood before the driver becomes fatigued. Therefore, it is possible to provide a working environment in which the driver is less likely to feel fatigued.

Also, the controller 30 can transmit the driver's biological information to the management center. Therefore, the administrator at the management center can continuously remotely monitor the biological condition of the driver. Also, the controller 30 can transmit the biological information of the driver to the management center when the work environment is changed. Therefore, the administrator can quickly recognize that the driver's biological condition has become a non-optimal biological condition. In addition, the effect of changing the work environment can be confirmed. The administrator can also aggregate and analyze the biometric information of multiple drivers.

Next, a specific example of work environment change processing will be described with reference to FIG. FIG. 5 is a flowchart of a specific example of work environment change processing. The controller 30 repeatedly executes this work environment change process at a predetermined control cycle while the shovel is in operation.

First, the controller 30 acquires the driver's heart rate (step ST11). In this embodiment, the controller 30 obtains the driver's heart rate based on the output of the heart rate detection device 45a.

After that, the controller 30 determines whether or not the driver's wakefulness is below a predetermined level (step ST12). In this embodiment, the controller 30 determines that the driver's arousal level is below a predetermined level when the driver's heart rate is below the threshold.

When determining that the driver's arousal level is not below the predetermined level (NO in step ST12), the controller 30 terminates the current work environment change process without changing the work environment.

When determining that the driver's arousal level is below the predetermined level (YES in step ST12), the controller 30 blows cool air toward the driver's head (step ST13). In this embodiment, the air conditioner 46d generates cold air, and the air outlet 46d4 is opened so as to blow air toward the head of the driver sitting in the driver's seat SE. Air humidity may be controlled. That is, dehumidification or humidification may be performed. A stimulus such as vibration may be applied to the driver by operating a seat vibrator or the like.

With this configuration, the controller 30 can increase the alertness of the driver by blowing cool air to the head of the driver whose alertness has decreased. Therefore, it is possible to suppress or prevent the driver's attention from being distracted. As a result, operation errors can be suppressed or prevented.

The controller 30 may acquire the bioimpedance of the driver based on the output of the bioimpedance detection device 45b. Then, whether or not the degree of fatigue of the driver exceeds a predetermined level may be determined based on the bioimpedance of the driver. In this case, the controller 30 can detect arm muscle fatigue caused by the driver's continued movement of the control lever 26A for a long period of time. For example, the degree of swelling of the driver is estimated based on the bioimpedance, and fatigue of the driver and muscle fatigue of the arm are estimated based on the degree of swelling. Then, when the bioimpedance of the driver is equal to or higher than the threshold, the controller 30 determines that the muscle fatigue of the driver's arms exceeds a predetermined level, and causes cool air to be emitted toward the arms of the driver. may Depending on the intensity of exercise, hot air may be directed toward the driver's arms. With this configuration, the controller 30 can relieve fatigue of the driver's arms by blowing cool air or warm air onto the arms of the driver who have accumulated fatigue. As a result, it is possible to suppress or prevent arm muscle fatigue from adversely affecting the lever operation of the driver.

Next, another specific example of work environment change processing will be described with reference to FIG. FIG. 6 is a flowchart of another specific example of work environment change processing. The controller 30 repeatedly executes this work environment change process at a predetermined control cycle while the shovel is in operation.

First, the controller 30 acquires information on the driver's buttocks (step ST21). The information about the driver's buttocks is, for example, the surface temperature of the buttocks, the distribution of sitting pressure, and the like. The surface temperature of the buttocks is detected, for example, by a temperature sensor attached to the seat surface of the driver's seat SE. The seat pressure distribution is detected, for example, by a pressure sensor attached to the seat surface of the driver's seat SE.

After that, the controller 30 determines whether or not the discomfort level of the driver's buttocks exceeds a predetermined level (step ST22). In this embodiment, the controller 30 makes a determination based on information regarding the driver's buttocks. The temperature, humidity, outside air temperature, driver's heart rate, bioimpedance, etc. within the cabin 10 may additionally be considered.

When determining that the degree of discomfort regarding the driver's buttocks does not exceed the predetermined level (NO in step ST22), the controller 30 terminates this work environment change process without changing the work environment.

If it is determined that the discomfort level of the driver's buttocks exceeds the predetermined level (YES in step ST22), the controller 30 activates the seat cooler 46b (step ST23). If the seat cooler 46b is already operating, its air volume may be increased.

With this configuration, the controller 30 can improve the working environment by blowing cold air to the buttocks of the driver whose discomfort has increased, and can suppress the driver's discomfort caused by dampness of the buttocks. As a result, it is possible to help increase the driver's concentration on the operation of the shovel.

Next, still another specific example of the work environment change processing will be described with reference to FIG. FIG. 7 is a flowchart of still another specific example of work environment change processing. The controller 30 repeatedly executes this work environment change process at a predetermined control cycle while the shovel is in operation.

First, the controller 30 acquires information about the seating posture of the driver (step ST31). In this embodiment, the controller 30 acquires information about the seating posture of the driver based on the image information output by the imaging device 47 .

After that, the controller 30 determines whether or not the duration of the same sitting posture exceeds a predetermined threshold (step ST32). In this embodiment, the controller 30 recognizes the movement of the driver's upper body excluding the arms by performing various image processing on the image information output by the imaging device 47, and based on the movement, the same sitting posture is continued. determine whether or not there is Body pressure distribution and the like may additionally be taken into consideration. The body pressure distribution is detected, for example, by a pressure sensor attached to the backrest of the driver's seat SE.

The duration threshold may be dynamically changed based on the output of heart rate detector 45a, bioimpedance detector 45b, or the like.

If the controller 30 determines that the duration of the same sitting posture does not exceed the predetermined threshold (NO in step ST32), the controller 30 terminates the current working environment change process without changing the working environment.

When determining that the duration of the same sitting posture exceeds the predetermined threshold (YES in step ST32), the controller 30 changes the position of the lumbar support 46a (step ST33). In the present embodiment, the controller 30 changes the convex height of the lumbar support 46a by changing the degree of expansion of the air bag that constitutes the lumbar support 46a.

With this configuration, the controller 30 can prompt the driver who has kept the same sitting posture to change the sitting posture. Therefore, it is possible to reduce the driver's fatigue caused by continuing to take the same seating posture.

A preferred embodiment of the present invention has been described above. However, the invention is not limited to the embodiments described above. Various modifications, substitutions, etc., may be applied to the above-described embodiments without departing from the scope of the present invention. Also, each of the features described with reference to the above embodiments may be combined as appropriate as long as they are not technically inconsistent.

For example, at least two of applying cool air to the head, operating the seat cooler 46b, and changing the position of the lumbar support 46a may be performed simultaneously.

DESCRIPTION OF SYMBOLS 1... Lower traveling body 2... Revolving mechanism 3... Upper revolving body 4... Boom 5... Arm 6... Bucket 7... Boom cylinder 8... Arm cylinder 9... Bucket cylinder 10 Cabin 11 Engine 11a Alternator 11b Starter 14 Main pump 14a Regulator 14b Discharge pressure sensor 14c Oil temperature sensor 15. Pilot pump 17 Control valve 26 Operation device 26A Operation lever 26AL Left operation lever 26AR Right operation lever 29 Pressure sensor 30 Controller 40 Display device 41 Image display unit 42 Switch panel 45 Biological information acquisition device 45a Heart rate detection device 45b Bioimpedance detection device 45bL Left electrode 45bR Right electrode 46 Work environment adjustment device 46a Lumbar support 46b Seat cooler 46b1 Blower fan 46b2 Suction hole 46b3 Discharge hole 46c Seat heater 46d Air conditioner 46d1 Blower fan 46d2 to 46d4 Air outlet 47 Imaging device 48 Communication device 49 Alert device 50 Engine controller unit 70 Storage battery 75 Engine RPM adjustment dial SE...Driver's seat

Claims (6)

a lower running body;
an upper revolving body rotatably mounted on the lower traveling body;
an attachment attached to the upper rotating body;
a cabin provided in the upper revolving body;
an operating lever installed in the cabin;
a biometric information acquisition device that acquires biometric information of a driver in the cabin;
a working environment adjustment device capable of adjusting the working environment in the cabin;
a control device capable of controlling the work environment adjustment device,
The control device identifies the driver to generate identification information, and determines that the driver's arousal level is below a predetermined level based on the biological information of the driver acquired by the biological information acquisition device. adjusts the working environment of the driver by adjusting the working environment adjusting device in the cabin provided in the upper revolving structure so that the working environment of the driver exceeds a predetermined level .
Excavator. a lower running body;
an upper revolving body rotatably mounted on the lower traveling body;
an attachment attached to the upper rotating body;
a cabin provided in the upper revolving body;
an operating lever installed in the cabin;
an imaging device installed in the cabin and using image information obtained by imaging a driver as biological information;
a working environment adjustment device capable of adjusting the working environment in the cabin;
a control device capable of controlling the work environment adjustment device,
The control device identifies the driver to generate identification information, and determines that the driver's arousal level is below a predetermined level based on the biological information of the driver acquired by the imaging device. Adjusting the work environment adjustment device in the cabin provided in the upper swing body to adjust the work environment of the driver so as to exceed the level ;
Excavator. The biological information acquisition device is a sensor attached to at least one of a portable terminal that can be carried by a driver and a driver's seat installed in the cabin,
Shovel according to claim 1 . The work environment adjustment device controls at least one of an air conditioner, a seat cooler, and a lumbar support to adjust the work environment in the cabin.
A shovel according to claim 1 or 3. further comprising an alerting device for alerting the driver,
The control device controls the alerting device based on the output of the biological information acquisition device.
A shovel according to claim 1, 3 or 4. further comprising a communication device for controlling communication between the excavator and the outside,
The control device associates the biometric information acquired by the biometric information acquisition device with the identification information of the driver, and transmits the biometric information associated with the identification information to the outside via the communication device.
A shovel according to claim 1, 3, 4 or 5.

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