Control system and control method

Abstract

To change a display mode of a seat belt wearing state by a rotating lamp according to the needs of a site.SOLUTION: The display device receives a selection of one rotating light setting from a plurality of options of rotating light settings representing the relationship of the operation of the rotating light to the wearing state of the seat belt. The display device outputs the selected rotating light setting.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present disclosure relates to a control system and a control method. [Background technology]

[0002] Patent Document 1 discloses a technology for generating driving violation warning information when a seat belt provided in the driver's seat of a work machine is not fastened in order to encourage the driver to fasten the seat belt. Incidentally, work machines are sometimes equipped with rotating lights to indicate the status of the work machine to external workers and the like. In such work machines, the rotating lights are sometimes used to indicate whether the seat belt is fastened or not. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2022-152693 Summary of the Invention [Problem to be solved by the invention]

[0004] However, whether it is desired to turn on the rotating light when the seat belt is fastened or when the seat belt is not fastened may differ depending on the site. An object of the present disclosure is to provide a control system and a control method that can change the manner in which a rotating light indicates the seat belt fastening status according to the needs of the site. [Means for solving the problem]

[0005] According to one aspect of the present invention, a work machine is a control system for the work machine that includes a seat belt provided in the driver's seat where the operator sits, a seat belt sensor that detects whether the seat belt is fastened, a rotating light, and a display device having a display unit and an input unit, and the display device accepts the selection of one rotating light setting from a plurality of rotating light setting options that indicate the relationship between the fastening state of the seat belt and the operation of the rotating light, and outputs the selected rotating light setting. [Effects of the Invention]

[0006] According to the above aspect, the control system can change the manner in which the rotating light indicates the seat belt fastening status in accordance with the needs of the site. [Brief explanation of the drawings]

[0007] [Figure 1] 1 is a schematic diagram showing the configuration of a work machine according to a first embodiment. FIG. [Figure 2] FIG. 2 is a diagram showing the internal configuration of a driver's cab according to the first embodiment. [Figure 3] FIG. 2 is a schematic block diagram showing the configuration of an operation terminal and a control device according to the first embodiment. [Figure 4] FIG. 10 is a diagram illustrating an example of an input screen for rotating light settings according to the first embodiment. [Figure 5] FIG. 3 is a logic circuit diagram showing a method for generating a control signal for a rotating light of a work machine according to the first embodiment. [Figure 6] FIG. 1 is a schematic block diagram illustrating the configuration of a computer according to at least one embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0008] Hereinafter, the embodiments will be described in detail with reference to the drawings. First Embodiment <Configuration of work machine 100> FIG. 1 is a schematic diagram showing the configuration of a work machine 100 according to a first embodiment. The work machine 100 operates at a construction site, excavating construction objects such as earth and sand, and loading the excavated material into a loading vessel or other loading platform such as a dump truck. Examples of the work machine 100 include a face shovel, a backhoe shovel, and a rope shovel. The work machine 100 may be electrically driven or hydraulically driven. The work machine 100 according to the first embodiment is a backhoe shovel. The work machine 100 includes a traveling body 110, a rotating body 120, a work implement 130, and a cab 140. The work machine 100 is not limited to a hydraulic shovel, and may be another work machine such as a wheel loader, a bulldozer, or a forklift.

[0009] The running body 110 supports the work machine 100 so that the work machine 100 can travel. The running body 110 includes two endless tracks provided on the left and right sides, and a travel motor for driving each of the endless tracks. The rotating body 120 is supported by the running body 110 so as to be able to rotate around a rotation center. The work implement 130 is hydraulically driven and supported on the front part of the revolving body 120 so as to be drivable in the vertical direction. The operator's cab 140 is a space where the operator sits and operates the work machine 100.

[0010] <Configuration of rotating body 120> The swing body 120 includes an engine 121, a hydraulic pump 122, a control valve 123, and a swing motor . The engine 121 is a prime mover that drives the hydraulic pump 122. The engine 121 is an example of a power source. The hydraulic pump 122 is a variable displacement pump that is driven by the engine 121. The hydraulic pump 122 supplies hydraulic oil via a control valve 123 to each actuator that drives the work machine 100. The control valve 123 controls the flow rate of the hydraulic oil supplied from the hydraulic pump 122 . The swing motor 124 is driven by hydraulic oil supplied from a hydraulic pump 122 via a control valve 123 to swing the swing body 120 .

[0011] <Configuration of work machine 130> The work machine 130 includes a boom 131, an arm 132, a bucket 133 as a work implement, a boom cylinder 131C, an arm cylinder 132C, and a bucket cylinder 133C. Other examples of the work implement include end attachments such as a clam bucket, a tilt bucket, a tilt rotate bucket, a grapple, and a lifting magnet.

[0012] The base end of the boom 131 is rotatably attached to the revolving unit 120 via a boom pin. In the work machine 100 shown in FIG. 1, the boom 131 is provided in the center of the front of the revolving unit 120, but this is not limitative and the boom 131 may be attached offset in the left-right direction. In this case, the center of rotation of the revolving unit 120 is not located on the plane of operation of the work implement 130. The arm 132 connects the boom 131 and the bucket 133. The base end of the arm 132 is rotatably attached to the tip of the boom 131 via an arm pin. The bucket 133 is rotatably attached to the tip of the arm 132 via a pin. Members that support the bucket 133 include a boom 131 and an arm 132. The bucket 133 functions as a container for storing excavated earth and sand. The bucket 133 is attached so that its opening faces the rotating body 120 (rear). In other words, the work machine 100, which is a backhoe excavator, performs excavation by pulling the bucket 133 toward the front of the rotating body 120.

[0013] The boom cylinder 131C is a hydraulic cylinder for operating the boom 131. A base end of the boom cylinder 131C is attached to the revolving body 120. A tip end of the boom cylinder 131C is attached to the boom 131. The arm cylinder 132C is a hydraulic cylinder for driving the arm 132. A base end of the arm cylinder 132C is attached to the boom 131. A tip end of the arm cylinder 132C is attached to the arm 132. The bucket cylinder 133C is a hydraulic cylinder for driving the bucket 133. A base end of the bucket cylinder 133C is attached to the arm 132. A tip end of the bucket cylinder 133C is attached to a link mechanism that rotates the bucket 133.

[0014] <Configuration of the driver's cab 140> FIG. 2 is a diagram showing the internal configuration of the operator's cab 140 according to the first embodiment. A driver's seat 141, an operation terminal 142, and an operation device 143 are provided in the driver's cab 140. The driver's seat 141 in which an operator sits is provided with a seat belt 1411 and a seat belt sensor 1412. The seat belt 1411 is a safety device worn to secure the operator to the driver's seat 141. The seat belt 1411 is fastened by inserting an anchor provided on the belt into a buckle fixed to the driver's seat. The seat belt sensor 1412 is provided, for example, inside the buckle of the seat belt 1411 and detects whether the seat belt 1411 is fastened by detecting the presence or absence of the anchor. The seat belt sensor 1412 may be a switch or a piezoelectric sensor that detects pressure by the anchor, or may be an electric circuit that is conductive via the anchor. The seat belt sensor 1412 detects whether the seat belt 1411 is fastened or not, and outputs sensor data indicating whether the seat belt 1411 is fastened or not. The seat belt sensor 1412 may output a measurement value of the pressure applied to the buckle by the anchor metal fitting, rather than the state of fastening or not fastening. Such a measurement value is an example of sensor data.

[0015] The operation terminal 142 is provided near the driver's seat 141 and is a user interface with the control device 160, which will be described later. The operation terminal 142 is, for example, a display device configured with a touch panel, and may have an operation unit operated by an operator and an input unit that accepts operations. The touch panel is an example of an input unit and a display unit. The display device also displays measurement data from an engine water temperature gauge, a fuel gauge, and the like. The operation terminal 142 may also include a display unit such as an LCD and an input unit such as a keypad.

[0016] The operation device 143 is a device for driving the traveling body 110, the revolving body 120, and the work machine 130 through manual operation by an operator. The operation device 143 includes a left operation lever 143LO, a right operation lever 143RO, a left foot pedal 143LF, a right foot pedal 143RF, a left travel lever 143LT, and a right travel lever 143RT.

[0017] The left operating lever 143LO is provided on the left side of the operator's seat 141. The right operating lever 143RO is provided on the right side of the operator's seat 141. The left operating lever 143LO and the right operating lever 143RO operate the rotating body 120, the boom 131, the arm 132, and the bucket 133.

[0018] The left foot pedal 143LF is located on the left side of the floor in front of the driver's seat 141. The right foot pedal 143RF is located on the right side of the floor in front of the driver's seat 141. The left travel lever 143LT is pivotally supported by the left foot pedal 143LF, and is configured so that tilting the left travel lever 143LT and pushing down the left foot pedal 143LF are linked. The right travel lever 143RT is pivotally supported by the right foot pedal 143RF, and is configured so that tilting the right travel lever 143RT and pushing down the right foot pedal 143RF are linked. The left and right tracks of the traveling body 110 are operated by the left foot pedal 143LF and left travel lever 143LT, and the right foot pedal 143RF and right travel lever 143RT.

[0019] The operating device 143 according to the first embodiment is pilot-operated to control the control valve 123. That is, the hydraulic oil supplied from the pilot pump is controlled by operating the operating device 143, and the hydraulic oil opens and closes the control valve 123. The pressure of the hydraulic oil supplied to the control valve 123 is measured by a pressure sensor (not shown).

[0020] As shown in FIG. 1, a rotating light 144 is provided on the roof of the cab 140. That is, the rotating light 144 is provided outside the cab 140. The rotating light 144 lights up in blue to indicate whether the seat belt 1411 is fastened or not. Whether the rotating light 144 lights up when the seat belt 1411 is fastened or when the seat belt 1411 is not fastened is set by the operation terminal 142. The color of the rotating light 144 in other embodiments is not limited to blue.

[0021] The work machine 100 is equipped with a control device 160 that controls the work machine 100. The control device 160 receives an operation signal from the operation device 143.

[0022] Configuration of operation terminal 142 FIG. 3 is a schematic block diagram showing the configuration of the operation terminal 142 and the control device 160 according to the first embodiment. The operation terminal 142 includes a display control unit 401, a login processing unit 402, a user memory unit 403, a setting input unit 404, a setting memory unit 405, a sensor acquisition unit 406, an operation status acquisition unit 407, an alarm status determination unit 408, and an output unit 409. The control device 160 includes an operation signal acquisition unit 601 , a work state determination unit 602 , and a rotating light control unit 603 .

[0023] A display control unit 401 controls the information display on the touch panel.

[0024] The login processing unit 402 performs login processing for the user. The user logs in to the work machine 100 by selecting an operator from a list of operators displayed on the touch panel and entering the password of that operator. Alternatively, for example, the login processing unit 402 may perform login processing for the user by means of possession authentication using a key fob or mobile terminal owned by the user. The user storage unit 403 stores the user ID, password, and operation authority for each user in association with each other.

[0025] The setting input unit 404 receives, via the touch panel, a rotating light setting indicating the relationship between the fastening state of the seat belt 1411 and the operation of the rotating light 144. That is, the setting input unit 404 receives a rotating light setting indicating the relationship between the lighting conditions of the seat belt 1411 and the rotating light 144. FIG. 4 is a diagram showing an example of an input screen D for rotating light settings according to the first embodiment. The rotating light setting indicates one of turning on the rotating light 144 when the seat belt 1411 is fastened, turning on the rotating light 144 when the seat belt 1411 is not fastened, and not turning on the rotating light 144 regardless of the fastening state of the seat belt 1411. The display control unit 401 displays the input screen D for rotating light settings shown in FIG. 4 on the touch panel. The input screen D displays options for the rotating light settings so that they can be selected. The setting input unit 404 receives input of the options for the rotating light settings. The input screen D for rotating light settings is displayed when the user has administrator authority. That is, a user with operator authority cannot change the rotating light settings. However, even if a user without administrator privileges is logged in, the display control unit 401 may display the rotating light setting input screen D when, for example, a predetermined password is input by the user. The setting storage unit 405 stores the information on the rotating light settings input to the setting input unit 404 .

[0026] The sensor acquisition unit 406 acquires sensor data from the seat belt sensor 1412. For example, the sensor acquisition unit 406 acquires sensor data from the seat belt sensor 1412 that indicates whether the seat belt 1411 is fastened or not fastened. The work state acquisition unit 407 acquires information from the control device 160 indicating whether the work state of the work machine 100 is a work state that requires fastening of the seat belt 1411. For example, a work state that requires fastening of the seat belt 1411 is a state in which the work machine is turning or traveling. A state in which the work machine is stopped without turning or traveling, or a state in which only the work implement 130 is operating, is not a work state in which fastening of the seat belt 1411 is required.

[0027] The alarm state determination unit 408 determines whether or not to output an alarm for unfastened seatbelts based on the sensor data of the seatbelt sensor 1412 and the acquired work state. The alarm state determination unit 408 generates alarm state information indicating whether or not to output an alarm. The alarm state indicates TRUE when an alarm should be output, and indicates FALSE when an alarm should not be output. A state in which an alarm should be output because the seatbelt 1411 is not fastened can be said to be an unfastened attention state. For example, when a seatbelt is not fastened and the traveling vehicle is traveling, the alarm state is an unfastened attention state. For example, when a seatbelt is not fastened and the rotating body is rotating, the alarm state is an unfastened attention state. In other words, the alarm state determination unit 408 determines whether or not the state is an unfastened attention state. The unfastened attention state is an example of alarm state information. The alarm state determination unit 408 determines that an alarm should be output when the seatbelt 1411 is not fastened and the work state requires fastening the seatbelt 1411. However, if the state in which the seat belt 1411 is not fastened and the work state in which fastening of the seat belt 1411 is required ends in a short time (for example, 1 second), the warning state determination unit 408 maintains the warning state as FALSE.

[0028] The output unit 409 outputs the rotating light setting information and the alarm status information to the control device 160. The output unit 409 also transmits the alarm status information to a buzzer (not shown) and an external management device. The buzzer sounds when the alarm status is TRUE and stops when the alarm status is FALSE.

[0029] The operation signal acquisition unit 601 acquires an operation signal from the operation device 143. That is, the operation signal acquisition unit 601 acquires, as an operation signal, a measurement value of a pressure sensor that measures the pressure of hydraulic oil supplied to the control valve 123 by operation of the operation device 143. The work state determination unit 602 determines whether the work state of the work machine 100 is a work state that requires fastening of a seat belt, based on the operation signal. The work state determination unit 602 according to the first embodiment determines that the work state requires fastening of a seat belt when the swing is not locked and the operation signal related to the swing operation is not zero, or when the operation signal related to the traveling operation is not zero. Even if the operation signal related to the swing operation is not zero, if the swing is locked, the work state is not determined to be a work state that requires fastening of a seat belt, thereby preventing an alarm from being issued during warm-up operation.

[0030] The rotating light control unit 603 controls the turning on and off of the rotating light based on the rotating light setting information and alarm status information output from the operation terminal 142. In other words, the rotating light control unit 603 determines whether to turn on the rotating light based on the rotating light setting information output from the operation terminal 142 and the sensor data of the seat belt sensor 1412. Specifically, the rotating light control unit 603 operates as follows. If the rotating light setting indicates that the rotating light 144 should be turned on when the seat belt 1411 is fastened and the alarm state is FALSE, the rotating light control unit 603 turns on the rotating light 144. If the rotating light setting indicates that the rotating light 144 should be turned on when the seat belt 1411 is fastened and the alarm state is TRUE, the rotating light control unit 603 does not turn on the rotating light 144. If the rotating light setting indicates that the rotating light 144 should be turned on when the seat belt 1411 is not fastened and the alarm state is TRUE, the rotating light control unit 603 turns on the rotating light 144. If the rotating light setting indicates that the rotating light 144 should be turned on when the seat belt 1411 is not fastened and the alarm state is FALSE, the rotating light control unit 603 does not turn on the rotating light 144. When the rotating light setting indicates that the rotating light 144 is not to be turned on regardless of whether the seat belt 1411 is fastened, the rotating light control unit 603 does not turn on the rotating light 144 regardless of whether an alarm state is present.

[0031] FIG. 5 is a logic circuit diagram showing a method for generating a control signal for a rotating light of the work machine 100 according to the first embodiment. The working state determination unit 602 takes the logical AND L2 of the logical negation L1 of the swing lock signal (swing unlocked state) and the swing operation signal. The working state determination unit 602 outputs the logical OR L3 of the travel operation signal and the output of the logical AND L2 as the working state. In other words, when the swing operation signal is present and the swing is unlocked, the working state is TRUE. Also, when the travel operation is being performed, the working state is TRUE. The warning state determination unit 408 outputs the logical AND L5 of the logical negation L4 of the sensor data of the seatbelt sensor 1412 and the working state as the warning state. In other words, when the seatbelt is not fastened and in the working state, the warning state becomes TRUE. If the rotating light setting indicates that the rotating light 144 should be turned on when the seat belt 1411 is fastened, the rotating light control unit 603 outputs the logical negation L6 of the alarm state as an instruction to turn on the rotating light 144. If the rotating light setting indicates that the rotating light 144 should be turned on when the seat belt 1411 is not fastened, the rotating light control unit 603 outputs the value of the alarm state as an instruction to turn on the rotating light 144. If the rotating light setting indicates that the rotating light 144 should not be turned on regardless of the state of the seat belt 1411, the rotating light control unit 603 outputs FALSE as an instruction to turn on.

[0032] Actions and Effects The operation terminal 142 of the work machine 100 according to the first embodiment accepts the selection of one revolving light setting from a plurality of options for the revolving light setting, which indicate the relationship between the operation of the revolving light 144 and the fastening state of the seat belt 1411. The operation terminal 142 outputs the selected revolving light setting. This makes it possible for the work machine 100 to switch, depending on the work site, between turning on the revolving light when the seat belt 1411 is properly fastened and the work machine 100 is turning or traveling, and turning on the revolving light when the work machine 100 is turning or traveling even though the seat belt 1411 is not fastened.

[0033] Other Embodiments Although one embodiment has been described in detail above with reference to the drawings, the specific configuration is not limited to the above, and various design modifications are possible. That is, in other embodiments, the order of the above-described processes may be changed as appropriate. Furthermore, some processes may be executed in parallel. The operation terminal 142 according to the above-described embodiment may be configured by a single computer, or the configuration of the operation terminal 142 may be divided among multiple computers, and the multiple computers may cooperate with each other to function as the operation terminal 142. For example, some of the functions of the operation terminal 142 may be provided in the control device 160. Furthermore, some of the functions of the control device 160 may be provided in the operation terminal 142.

[0034] The work machine 100 according to the embodiment described above drives the actuator using a pilot system, but this is not limited to this. For example, the control device 160 of the work machine 100 according to another embodiment may obtain an operation signal from the operation device 143 as an electrical signal, and output a control command to the control valve 123 based on the operation signal.

[0035] The working state determination unit 602 of the control device 160 according to the embodiment described above determines the working state based on an operation signal, but this is not limited to this. For example, the working state determination unit 602 according to another embodiment may acquire measured values ​​of the running speed of the running object 110 or the rotational speed of the swing motor 124, and determine the working state based on the measured values. In other words, the working state determination unit 602 may determine that the working state requires fastening of a seat belt when the speed or angular velocity indicated by the measured value is greater than zero.

[0036] <Computer Configuration> FIG. 6 is a schematic block diagram illustrating the configuration of a computer according to at least one embodiment. The computer 90 includes a processor 91 , a main memory 92 , a storage 93 , and an interface 94 . The above-described operation terminal 142 and control device 160 are implemented in a computer 90. The operations of the above-described processing units are stored in the form of a program in a storage 93. The processor 91 reads the program from the storage 93, loads it into the main memory 92, and executes the above-described processing in accordance with the program. The processor 91 also allocates storage areas in the main memory 92 corresponding to the above-described storage units in accordance with the program. Examples of the processor 91 include a CPU (Central Processing Unit), a GPU (Graphic Processing Unit), and a microprocessor.

[0037] The program may be for realizing some of the functions to be performed by the computer 90. For example, the program may be combined with other programs already stored in storage or implemented in other devices to perform the functions. In another embodiment, the computer 90 may include a custom LSI (Large Scale Integrated Circuit) such as a PLD (Programmable Logic Device) in addition to or instead of the above configuration. Examples of PLDs include PAL (Programmable Array Logic), GAL (Generic Array Logic), CPLD (Complex Programmable Logic Device), and FPGA (Field Programmable Gate Array). In this case, some or all of the functions realized by the processor 91 may be realized by the integrated circuit. Such an integrated circuit is also an example of a processor. In another embodiment, the computer 90 may be virtualized on one or more computers.

[0038] Examples of storage 93 include a magnetic disk, a magneto-optical disk, an optical disk, and a semiconductor memory. Storage 93 may be an internal medium directly connected to the bus of computer 90, or an external medium connected to computer 90 via interface 94 or a communication line. Furthermore, when this program is distributed to computer 90 via a communication line, computer 90 that receives the program may load the program into main memory 92 and execute the above-described processing. In at least one embodiment, storage 93 is a non-transitory tangible storage medium.

[0039] The program may also be a program for realizing some of the above-described functions. Furthermore, the program may be a so-called differential file (differential program) that realizes the above-described functions in combination with another program already stored in storage 93. [Explanation of symbols]

[0040] DESCRIPTION OF SYMBOLS 100...Work machine 110...Traveling body 120...Swing body 121...Engine 122...Hydraulic pump 123...Control valve 124...Swing motor 130...Work machine 131...Boom 131C...Boom cylinder 132...Arm 132C...Arm cylinder 133...Bucket 133C...Bucket cylinder 140...Operator's cab 141...Operator's seat 1411...Seat belt 1412...Seat belt sensor 142...Operation terminal 143...Operation device 144...Revolving light 160...Control device 401...Display control unit 402...Login processing unit 403...User memory unit 404...Setting input unit 405...Setting memory unit 406...Sensor acquisition unit 407...Working state acquisition unit 408...Alarm state determination unit 409...Output unit 601...Operation signal acquisition unit 602...Working state determination unit 603... Rotating light control unit 90... Computer 91... Processor 92... Main memory 93... Storage 94... Interface

Claims

1. A seat belt provided in the driver's seat where the operator sits; a seat belt sensor that detects whether the seat belt is fastened; Rotating lights and a display device having a display unit and an input unit; A control system for a work machine comprising: The display device includes: accepting a selection of one rotating light setting from a plurality of rotating light setting options that represent a relationship between the fastening state of the seat belt and the operation of the rotating light; outputting the selected rotating light setting; Control system.

2. The plurality of options are: turning on the rotating light when the seat belt is fastened; turning on the rotating light when the seat belt is not fastened; The control system of claim 1 , comprising:

3. The plurality of options further include turning off the rotating light regardless of the state of the seat belt. The control system of claim 2 .

4. Whether or not to turn on the rotating light is determined based on the rotating light setting output by the display device and the sensor data of the seat belt sensor. The control system of claim 1 .

5. the work machine is provided with a running body for running, When the sensor data of the seat belt sensor indicates that the seat belt is not fastened and the vehicle is moving, it is determined that the seat belt is in an unfastened warning state; determining whether to turn on the rotating light based on the rotating light setting output by the display device and whether the vehicle is in the unattached warning state; The control system of claim 4.

6. the work machine is provided with a rotating body for rotating; When the sensor data of the seat belt sensor indicates that the seat belt is not fastened and the rotating body is rotating, it is determined that the seat belt is in an unfastened warning state; determining whether to turn on the rotating light based on the rotating light setting output by the display device and whether the vehicle is in the unattached warning state; The control system of claim 4.

7. When it is determined that the device is in the non-wearing caution state, information indicating that the device is in the non-wearing caution state is output to an external computer.

7. A control system according to claim 5 or claim 6.

8. A seat belt provided in the driver's seat where the operator sits; a seat belt sensor that detects whether the seat belt is fastened; Rotating lights and a display device having a display unit and an input unit; A control method for a work machine comprising: a step in which the display device accepts selection of one rotating light setting from a plurality of rotating light setting options that indicate a relationship between the fastening state of the seat belt and the operation of the rotating light; The display device outputs the selected rotating light setting. Control method.

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