Alarm control system for construction machinery

Abstract

According to an aspect of the present disclosure, disclosed is an alarm control system for construction machinery, the alarm control system comprising: a sensor unit that detects posture information about the construction machinery; an operating lever configured to operate the construction machinery; a setting unit that may set a work restricted area for the construction machinery; a visual alarm unit that outputs a visual alarm when the construction machinery approaches the work restricted area; an audible alarm unit that outputs an audible alarm when the construction machinery approaches the work restricted area; and an alarm control unit that calculates the remaining distance or remaining angle from the construction machinery to the work restricted area, and if the calculated remaining distance or remaining angle is less than or equal to a pre-stored reference value, operates the visual alarm unit and the audible alarm unit, wherein the alarm control unit determines, on the basis of a signal from the operating lever, the possibility that the construction machinery invades the work restricted area, and if there is no possibility that the construction machinery invades the work restricted area, does not operate the audible alarm unit even if the calculated remaining distance or remaining angle is less than or equal to the reference value.

Description

Alarm control system for construction equipment

[0001] The present disclosure relates generally to construction machinery. In a specific aspect, the present disclosure relates to an alarm control system for construction machinery. The present disclosure may be applied to large vehicles such as trucks, buses, and construction equipment. While the present disclosure may be described with respect to a specific vehicle, the present disclosure is not limited to any particular vehicle.

[0002] In general, when working with construction equipment equipped with multi-joint work devices such as booms, arms, and buckets, such as excavators, in a narrow work site where hazardous materials such as gas cylinders are stored, a subway construction site, or a work site where gas and water pipes are buried underground at a certain depth, the work scope of the work device is limited to a certain extent to improve the safety and constructability of the work.

[0003] For example, if there are high-voltage power lines on top of an excavator, the operator must set a work limit zone on top of the excavator to prevent the boom, arm, and bucket of the work equipment from exceeding the work limit zone. Conventional excavators use a buzzer to audibly alert the operator when the work equipment approaches the work limit zone.

[0004] However, since conventional excavators simply operate the buzzer based on the distance or angle between the work tool and the work restriction area, there was a problem in that even in situations where the possibility of the work tool invading the work restriction area was low, the buzzer continued to operate as long as the work tool was close to the work restriction area, which increased the worker's work fatigue and lowered work efficiency.

[0005] According to a first aspect of the present disclosure, there is provided an alarm control system for a construction machine including a lower body, an upper swivel body rotatably coupled to the lower body, and a work device including a boom, an arm, and a bucket mounted on the upper swivel body, the alarm control system including a sensor unit for detecting posture information of the construction machine, an operating lever configured to operate the construction machine, a setting unit capable of setting a work restriction area of ​​the construction machine, a visual alarm unit for outputting a visual alarm when the construction machine approaches the work restriction area, an audible alarm unit for outputting an audible alarm when the construction machine approaches the work restriction area, and an alarm control unit for calculating a remaining distance or a remaining angle from the construction machine to the work restriction zero, and operating the visual alarm unit and the audible alarm unit when the calculated remaining distance or remaining angle is less than a pre-stored reference value, wherein the alarm control unit determines a possibility that the construction machine will invade the work restriction area based on a signal of the operating lever, and if there is no possibility that the construction machine will invade the work restriction area, the calculated remaining distance or the remaining angle is set to zero. A construction equipment alarm control system is provided that does not activate the audible alarm even when the residual angle is below the above-mentioned standard value. The technical advantage is that the audible alarm does not activate when the construction equipment is unlikely to encroach on the work restricted area, thereby reducing worker fatigue and improving work efficiency.

[0006] Optionally, in some examples, the alarm control unit may not operate the audible alarm unit when the operating lever is operated to move the construction machine away from the work restriction area.

[0007] Optionally, in some examples, the alarm control unit may not operate the audible alarm unit when the operating lever is in the neutral position.

[0008] Optionally, in some examples, the alarm control unit may operate the audible alarm unit when the operation lever is operated so that the construction machine moves toward the work restriction area when the construction machine is located in the work restriction area.

[0009] Optionally, in some examples, the alarm control unit may not operate the audible alarm unit when the remaining distance or remaining angle from the construction machine to the work restriction area increases.

[0010] Optionally, in some examples, the alarm control unit may not operate the audible alarm unit when there is no possibility that the construction machine will encroach on any of the set work restriction areas, if there are multiple work restriction areas.

[0011] Optionally, in some examples, the alarm control unit can control the audible alarm of the audible alarm unit to become louder as the construction machine approaches the work restriction area.

[0012] Optionally, in some examples, the alarm control unit can control the color saturation of the visual alarm of the visual alarm unit to increase as the construction machine approaches the work restriction area.

[0013] The above-described aspects, appended claims, and / or examples disclosed herein above and hereinafter may be suitably combined with one another as will be apparent to one of ordinary skill in the art.

[0014] Additional features and advantages are set forth in the following description, claims, and drawings, and in part will be readily apparent to those skilled in the art from the foregoing or may be recognized by practicing the teachings herein.

[0015] With reference to the accompanying drawings, a more detailed description of embodiments of the present disclosure, cited as examples, follows below.

[0016] FIG. 1 is a perspective view illustrating a construction machine according to one embodiment of the present invention.

[0017] Figure 2 is a block diagram showing the basic configuration of an alarm control system for construction equipment.

[0018] Figure 3 illustrates various examples of work restriction areas.

[0019] Figure 4a illustrates a visual alarm unit in which a visual alarm is activated.

[0020] Figure 4b illustrates an auditory alarm unit in which an auditory alarm is activated.

[0021] Figure 5 is a block diagram of the alarm control unit.

[0022] Figure 6 illustrates the points of the work device that serve as a reference when calculating the distance of the residual distance calculation unit.

[0023] Figure 7 illustrates an example of calculating the distance between a height restriction area and points of a work device.

[0024] Figure 8 shows a situation where the boom is downed while the work device is close to the height restriction area.

[0025] Figure 9 shows a situation in which the work device is in a state of being locked in a height-limited area.

[0026] Figure 10 shows a situation where the work device is darkened while approaching the depth limit area.

[0027] Figure 11 shows a boom-down situation in which the work device is close to the height restriction area and the horizontal length restriction area.

[0028] The aspects described below represent information necessary to enable a person skilled in the art to practice the present disclosure.

[0029] FIG. 1 is a perspective view illustrating a construction machine according to one embodiment of the present invention.

[0030] Referring to FIG. 1, a construction machine (1) such as an excavator has a cab (10), a lower body (20), an upper swivel body (30) that is swivellably installed on the lower body (20), a work device (40) that is movably installed on the upper body (30) and a hydraulic actuator (50).

[0031] The work device (40) is formed with a multi-joint structure and includes a boom (41) whose rear end is rotatably supported on an upper swivel body (30), an arm (42) whose rear end is rotatably supported on the front end of the boom (41), and a bucket (43) rotatably installed on the front end side of the arm (42). The hydraulic actuator (50) includes a boom actuator (51), an arm actuator (52), and a bucket actuator (53). When operating fluid is supplied according to the operator's operation of the operating lever, the boom actuator (51), the arm actuator (52), and the bucket actuator (53) operate the boom (41), the arm (42), and the bucket (43), respectively.

[0032] Figure 2 is a block diagram showing the basic configuration of an alarm control system for construction equipment.

[0033] Hereinafter, an alarm control system for construction equipment will be described with reference to FIGS. 1 and 2.

[0034] An alarm control system (100) for a construction machine is intended to visually and audibly give an alarm so that a worker can recognize it when the construction machine (1), particularly the upper swivel body (30) and the work device (40), approach a preset work restriction area, and may include a sensor unit (110), an operating lever (120), a setting unit (130), an alarm unit (140), and an alarm control unit (150).

[0035] The sensor unit (110) can measure the position, attitude and / or angle of the upper swivel body (30), the boom (41), the arm (42) and the bucket (43), and the inclination of the main body of the construction machine (1) using a plurality of inertial measurement units (IMUs), angle sensors, etc. For example, an inertial measurement device may be placed on each of the boom (41), the arm (42) and the bucket (43), thereby detecting the angles of each of the boom (41), the arm (42) and the bucket (43). In addition, the sensor unit (110) can detect the turning angle of the upper swivel body (30). Information measured by the sensor unit (110) is provided to the alarm control unit (150).

[0036] The operating lever (120) may be a hydraulic joystick or an electric joystick, and preferably, the operating lever (120) may be an electric joystick that generates an electric signal in proportion to the amount of operation by the operator and provides the signal to the alarm control unit (150).

[0037] The operating lever (120) can operate the rotation of the upper swivel body (30), the up and down movement of the boom (41), the rotation of the arm (42) and the bucket (43), etc. The operating lever (120) can be configured to include a first operating lever (121) and a second operating lever (122).

[0038] The first operating lever (121) is used to operate the arm (42) and the swing operation of the upper swivel body (30). When the first operating lever (121) is operated toward the front of the operator, the arm actuator (52) is operated to perform an arm-out operation, that is, to open the arm (42). When the first operating lever (121) is operated toward the rear of the operator, the arm actuator (52) is operated to perform an arm-in operation, that is, to close the arm (42). In addition, when the first operating lever (121) is operated toward the left of the operator, the swing hydraulic motor (not shown) is operated to perform a left swing operation, that is, to swing the upper swivel body (30) to the left. When the first operating lever (121) is operated to the right of the operator, the turning hydraulic motor is operated to perform a priority turning operation, i.e., to turn the upper turning body (30) to the right.

[0039] The second operating lever (122) is used to operate the boom (41) and the bucket (43). When the second operating lever (122) is operated toward the front of the worker, the boom actuator (51) is operated to perform a boom-down operation, that is, to lower the boom (41). When the second operating lever (122) is operated toward the rear of the worker, the boom actuator (51) is operated to perform a boom-up operation, that is, to raise the boom (41). In addition, when the second operating lever (122) is operated toward the left of the worker, the bucket actuator (53) is operated to perform a bucket-in operation, that is, to close the bucket (43). When the second operating lever (122) is operated toward the right of the worker, the bucket actuator (53) is operated to perform a bucket-out operation, that is, to open the bucket (43).

[0040] However, it is not limited thereto, and the operation method of the first operation lever (121) and the second operation lever (122) can of course be changed by the operator. For example, the first operation lever (121) can be used to operate the boom (41) and the bucket (43), and the second operation lever (122) can be used to operate the arm (42) and the upper swivel body (30).

[0041] Through the setting unit (130), the worker can set a work restriction area that can restrict the movement of the construction machine. The setting unit (130) may be configured as a display, but is not limited thereto, and may also be configured as a switch.

[0042] Figure 3 illustrates various examples of work restriction areas.

[0043] Referring to FIG. 3, the work limit area prevents the upper swivel body (30) and work device (40) from moving beyond a preset position or angle, and can be broadly classified into five types: a height limit plane (H), a depth limit plane (D), a reach out limit plane (R), a cab avoidance limit plane (C), and a swing limit plane (S).

[0044] The height restriction area (H) can be used to limit the maximum elevation height of the boom (41), arm (42) and bucket (43), for example, when a utility pole or communication line is located on top of the construction machine (1).

[0045] The depth limit area (D) can be used to limit the maximum depth of the boom (41), arm (42), and bucket (43), for example, when gas pipes and water pipes are buried in the ground at a certain depth.

[0046] The horizontal length restriction area (H) can be used to limit the maximum horizontal length of the boom (41), arm (42) and bucket (43), for example, when there are obstacles around the construction machine (1).

[0047] The cab avoidance restriction area (C) can be used, for example, to prevent the boom (41), arm (42) and bucket (43) from colliding with the cab (10).

[0048] The turning restriction area (S) is intended to limit the turning angle of the upper turning body (30), and can be used to limit the maximum turning angle of the upper turning body (30), for example, when there is an obstacle around the construction machine (1).

[0049] These work restriction areas can be set multiple times as needed.

[0050] The alarm unit (140) notifies the worker of the risk of proximity to the work restricted area through visual and auditory alarms when the construction machine (1) approaches the work restricted area. The alarm unit (140) includes a visual alarm unit (141) and an auditory alarm unit (142).

[0051] Figure 4a illustrates a visual alarm unit in which a visual alarm is displayed.

[0052] The visual alarm unit (141) can be configured as a display provided inside the driver's cabin (10), through which a visual alarm can be notified to the operator.

[0053] In addition, the visual alarm unit (141) can display different visual alarms for each work restriction area. For example, referring to FIGS. 3 and 4A together, when the work device (40) approaches the height restriction area (H), the visual alarm unit (141) can display a visual alarm (V) at the top of the display. In addition, when the work device (40) approaches the depth restriction area, the visual alarm unit (141) can display a visual alarm at the bottom of the display. Through this, the worker can intuitively determine which work restriction area the visual alarm displayed on the display is for.

[0054] In addition, to enable the operator to easily recognize the visual alarm, the color of the visual alarm (V) may be displayed differently from the background color of the visual alarm unit (141), or the visual alarm (V) may be displayed in a blinking manner. Preferably, the visual alarm (V) may be displayed on the display as a gradient in which the color changes continuously. The visual alarm unit (141) is controlled by the visual alarm control unit (155) described below.

[0055] Figure 4b illustrates an auditory alarm unit in which an auditory alarm is activated.

[0056] The auditory alarm unit (142) may be configured as a speaker installed inside the driver's cab (10), through which an auditory alarm can be notified to the operator. In Fig. 4b, the auditory alarm unit (142) is illustrated on the outside of the driver's cab (10) for convenience. Here, the auditory alarm includes a mechanical sound such as a general buzzer sound. The auditory alarm unit (142) is controlled by the auditory alarm control unit (156), which will be described later.

[0057] Figure 5 is a block diagram of the alarm control unit.

[0058] Referring to FIG. 5, the alarm control unit (150) may include a data receiving unit (151), a storage unit (152), a residual angle calculation unit (153), a residual distance calculation unit (154), a visual alarm control unit (155), and an auditory alarm control unit (156).

[0059] The data receiving unit (151) can receive information output by various devices during the operation of the construction machine. For example, the data receiving unit (151) can receive attitude information detected by the sensor unit (110). In addition, the data receiving unit (151) can receive information such as the operating direction of the operating lever (120) as an operating signal for the upper swivel body (30), boom (41), arm (42), and bucket (43). In addition, the data receiving unit (151) can receive information regarding the work restriction area set by the setting unit (130).

[0060] The storage unit (152) can store a reference value of the work restriction area, which serves as the operating standard of the alarm unit (140).

[0061] At this time, the storage unit (152) can store reference values ​​for each of the height restriction area, the depth restriction area, the horizontal length restriction area, the cab avoidance restriction area, and the turning restriction area. For example, a first reference value can be stored in the height restriction area, a second reference value in the depth restriction area, a third reference value in the horizontal length restriction area, a fourth reference value in the cab avoidance restriction area, and a fifth reference value in the turning restriction area.

[0062] The storage unit (152) can store the operating direction of the operating lever, which serves as the release criterion for the audible alarm for each work restriction area.

[0063] The residual angle calculation unit (153) calculates the residual angle between the upper slewing body (30) and the slewing restriction area based on the slewing angle and slewing restriction area information of the upper slewing body (30) received by the data receiving unit (151).

[0064] The residual angle calculation unit (153) outputs the calculated residual angle to the visual alarm control unit (155) and the auditory alarm control unit (156).

[0065] The residual distance calculation unit (154) calculates the distance between the work device (40) and the work restriction area based on the detailed information and work restriction area information of the work device (40) received by the data receiving unit (151). Specifically, the residual distance calculation unit (154) calculates the residual distance between the work device (40) and the work restriction area using the angles of the boom (41), the arm (42), and the bucket (43) respectively measured by the sensor unit (110), and the lengths of the boom (41), the arm (42), and the bucket (43).

[0066] Figure 6 illustrates the points of the work device that serve as a reference when calculating the distance of the residual distance calculation unit.

[0067] Referring to FIGS. 5 and 6 together, the residual distance calculation unit (154) measures the distance to the work limit area based on several points located on the boom (41), arm (42), and bucket (43). These points may be provided at various locations on the work device (40) and may also be changed.

[0068] Figure 7 illustrates an example of calculating the distance between a height restriction area and points of a work device.

[0069] Referring to FIGS. 5 and 7 together, the residual distance calculation unit (154) calculates the residual distance between points and the height restriction area (H), and outputs the residual distance (dmin) measured at the point (P1) closest to the height restriction area (H) to the visual alarm control unit (155) and the auditory alarm control unit (156).

[0070] The visual alarm control unit (155) compares the residual angle calculated by the residual angle calculation unit (153) or the residual distance calculated by the residual distance calculation unit (154) with the reference value of the work restriction area stored in the storage unit (152), and if the residual angle or residual distance is lower than the stored reference value, the visual alarm control unit (141) operates to display a visual alarm. At this time, the visual alarm control unit (155) does not consider the operating direction of the operating lever.

[0071] In addition, the visual alarm control unit (155) can control the visual alarm unit (141) to notify a visual alarm in stages according to the remaining distance. For example, the visual alarm control unit (155) can operate the visual alarm unit (141) so that the color saturation of the visual alarm increases as the construction machine (1) approaches the work restriction area. Through this, the worker can intuitively grasp the degree of proximity of the construction machine (1) to the work restriction area.

[0072] Figure 8 shows a situation where the boom is downed while the work device is close to the height restriction area.

[0073] Referring to FIG. 5 and FIG. 8 together, the residual distance measured at the point closest to the work limit area ( ) is lower than or equal to the first reference value (a1) of the height limit area (H) previously stored in the storage unit (152), as shown in Fig. 8(b), the visual alarm control unit (155) operates the visual alarm unit (141) to display a visual alarm (V).

[0074] Meanwhile, the auditory alarm control unit (156) determines whether there is a possibility that the upper swivel body (30) and the work device (40) may invade the set work restriction area based on the operation information of the operation lever (120) received by the data receiving unit (151) and the residual angle calculated by the residual angle calculating unit (153) or the residual distance calculated by the residual distance calculating unit (154).

[0075] Basically, the auditory alarm control unit (156) compares the residual angle calculated by the residual angle calculation unit (153) or the residual distance calculated by the residual distance calculation unit (154) with the reference value stored in the storage unit (152), and if the residual angle or the residual distance is lower than the stored reference value, the auditory alarm unit (142) is operated to notify the operator of the auditory alarm.

[0076] In addition, the auditory alarm control unit (156) can control the auditory alarm unit (142) to notify of a step-by-step auditory alarm according to the remaining distance. For example, the auditory alarm control unit (156) can operate the auditory alarm unit (142) so that the size of the auditory alarm increases as the construction machine (1) approaches the work restriction area. Through this, the worker can intuitively grasp the degree of proximity of the construction machine (1) to the work restriction area.

[0077] However, in a situation where a worker performs a boom-down operation as in Fig. 8, even though there is no possibility that the work device (40) will infringe upon the height restriction area (H), if an audible alarm is notified based on the distance between the work device (40) and the height restriction area (H), there is a problem in that the audible alarm continues to operate, increasing the worker's work fatigue and lowering work efficiency.

[0078] Accordingly, the auditory alarm control unit (156) does not operate the auditory alarm unit (142) if there is no possibility that the construction machine will encroach on the work restriction area, taking into account the operating direction of the operating lever. Hereinafter, a case in which the auditory alarm control unit (156) determines that there is no possibility of encroaching on the work restriction area will be examined.

[0079] Basically, the auditory alarm control unit (156) determines that there is no possibility of the construction machine (1) entering the work restriction area if the operating lever is operated to move the construction machine (1) away from the work restriction area. Alternatively, the auditory alarm control unit (156) determines that there is no possibility of the construction machine (1) entering the work restriction area if the remaining distance or remaining angle monotonically increases.

[0080] For example, when a worker performs a boom-down operation while the work device (40) is close to the height restriction area (H) as shown in FIG. 8, all points of the boom (41), the arm (42), and the bucket (43) move away from the height restriction area (H). That is, when the operation lever is operated so that the upper swivel body (30) or the work device (40) moves away from the work restriction area, the residual angle or residual distance increases. Accordingly, the auditory alarm control unit (156) determines that there is no possibility that the construction machine (1) will invade the work restriction area, and does not operate the auditory alarm unit (142).

[0081] Figure 9 shows a situation in which the work device is in a state of being locked in a height-limited area.

[0082] As shown in Fig. 9, when the worker performs the arm-in operation while the work device (40) is close to the height restriction area (H), the remaining distance of most points of the work device (40) increases. However, in the case of point (P2) located at the rear end of the arm (42), since it is located behind the rotation center of the arm (42), the remaining distance decreases as it approaches the height restriction area (H).

[0083] That is, since some areas of the work device (40) have a reduced remaining distance to the height restriction area (H), in this case, the possibility that the construction machine (1) may encroach on the work restriction area cannot be ruled out. That is, in the height restriction area (H), the arm-in motion is not considered as a criterion for stopping the audible alarm.

[0084] Figure 10 shows a situation where the work device is darkened while approaching the depth limit area.

[0085] In addition, referring to FIG. 10, when the worker performs an arm-out operation while the work device (40) is close to the depth limit area (D), the remaining distance of some points of the work device (40) increases, but in the case of points located on the bucket (43), the remaining distance decreases as they approach the depth limit area (D).

[0086] That is, since some areas of the working device have a reduced residual distance from the depth-limited area, in this case, the possibility that the working device (40) may encroach on the working-limited area cannot be ruled out. That is, in the depth-limited area, the arm-out motion is not considered as a criterion for stopping the audible alarm.

[0087] As above, the auditory alarm control unit (156) determines that there is no possibility that the work device (40) will invade the work restriction area when all points of the work device (40) are away from the work restriction area. In one embodiment, the operation direction of the operation lever that the work device is unlikely to invade for each work restriction area is organized as shown in Table 1 below. However, it is not limited thereto, and the auditory alarm control unit (156) determines that there is no possibility that the work device (40) will invade the work restriction area when all points of the work device (40) are away from the work restriction area. ) increases, it may be determined that there is no possibility that the work device (40) will encroach on the work restriction area.

[0088] BoomArmBucketHeight limit planeDown-InDepth limit planeUp--Reach out limit planeUpInInCab avoidance limit planeDownOutOut

[0089]

[0090] Meanwhile, the turning restriction area only needs to consider the turning direction of the upper swivel body. Specifically, the auditory alarm control unit (156) determines that there is no possibility of violating the work restriction area when the operating lever is operated so that the upper swivel body (30) moves away from the turning restriction area, and determines that there is a possibility of violating the work restriction area when the operating lever is operated so that the upper swivel body (30) approaches the turning restriction area.

[0091] Additionally, the auditory alarm control unit (156) determines that there is no possibility of the construction machine encroaching on the work restriction area when the operating lever is in the neutral position. Since the upper swivel body (30) and the work device (40) do not move when the operating lever is in the neutral position, the auditory alarm control unit (156) does not operate the auditory alarm unit (142).

[0092] Meanwhile, when the construction machine is located in the work restriction area, even if the operating lever is operated to move the upper swivel body (30) or the work device (40) toward the work restriction area, the movement is restricted by the work restriction area.

[0093] However, in such cases, it is necessary to notify the operator with an audible alarm, distinct from the case where the operating lever is in neutral. Accordingly, in the above case, the audible alarm control unit (156) determines that there is a possibility that the construction machine may encroach on the work restriction area and activates the audible alarm unit (142).

[0094] Meanwhile, if there are multiple work restriction areas set, the auditory alarm control unit (156) does not operate the auditory alarm unit (142) only when there is no possibility that the construction machine will encroach on any of the work restriction locations.

[0095] Figure 11 shows a boom-down situation in which the work device is close to the height restriction area and the horizontal length restriction area.

[0096] As shown in Fig. 11, when a worker performs a boom-down operation in a situation where the work device (40) is close to the height restriction area (H) and the horizontal length restriction area (R), all points of the work device (40) move away from the height restriction area (H) while approaching the horizontal length restriction area (R).

[0097] That is, in a situation such as FIG. 11, there is no possibility that the work device (40) will invade the height restriction area (H), but there is a possibility that it will invade the horizontal length restriction area (R), so the auditory alarm control unit (156) operates the auditory alarm unit (142).

[0098] As described above, in the present disclosure, the operation of the visual alarm and the audible alarm are independently controlled so that the audible alarm does not operate when there is a low possibility that the construction machine will encroach on the work restriction area, thereby reducing the worker's work fatigue and improving work efficiency.

[0099] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present disclosure. As used herein, the singular forms “a,” “an,” and “the” are intended to include the plural forms as well, unless the context clearly dictates otherwise. As used herein, the term “and / or” includes any and all combinations of one or more of the associated listed items. It will also be understood that the terms “comprises,” “comprising,” “includes,” and / or “including,” when used herein, specify the presence of stated features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0100] While terms such as "first" and "second" may be used herein to describe various components, it is to be understood that these components are not limited by these terms. These terms are used solely to distinguish one component from another. For example, a first component could be referred to as a "second component," and similarly, a second component could be referred to as a "first component," without departing from the scope of the present disclosure.

[0101] Relative terms such as "below" or "above" or "upper" or "lower" or "horizontal" or "vertical" may be used herein to describe one element's relationship to another, as illustrated in the drawings. It will be understood that these terms, and those discussed above, are intended to encompass different orientations of the device in addition to the orientations depicted in the drawings. When an element is referred to as being "connected" or "coupled" to another element, it will be understood that it may be directly connected or coupled to the other element, or that intervening elements may be present. Conversely, when an element is referred to as being "directly connected" or "directly coupled" to another element, no intervening elements are present.

[0102] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure pertains. Furthermore, it is to be understood that terms used herein should be interpreted to have a meaning consistent with their meaning within the context of this specification and related technologies, and will not be interpreted in an idealized or overly formal sense unless explicitly defined herein.

Claims

1. An alarm control system for a construction machine including a lower drive body, an upper swing body rotatably connected to the lower drive body, and a work device including a boom, an arm, and a bucket mounted on the upper swing body, A sensor unit that detects detailed information of the above construction machine; An operating lever configured to operate the above construction machine; A setting unit capable of setting a work restriction area of ​​the above construction equipment; A visual alarm unit that outputs a visual alarm when the construction machine approaches the work restriction area; An audible alarm unit that outputs an audible alarm when the construction machine approaches the work restriction area; and An alarm control unit that calculates a remaining distance or remaining angle from the construction machine to the work restriction area, and operates the visual alarm unit and the audible alarm unit when the calculated remaining distance or remaining angle is lower than a previously stored reference value, The above alarm control unit, Based on the signal of the above operating lever, it is determined that the construction machine may encroach on the work restriction area, An alarm control system for a construction machine that does not operate the audible alarm unit even if the calculated residual distance or residual angle is below the reference value, if there is no possibility that the construction machine will encroach on the work restriction area.

2. In paragraph 1 The above alarm control unit, An alarm control system for a construction machine, which does not operate the audible alarm unit when the operating lever is operated to move the construction machine away from the work restriction area.

3. In paragraph 1 The above alarm control unit, An alarm control system for a construction machine that does not operate the audible alarm unit when the above-mentioned operating lever is in the neutral position.

4. In paragraph 1 The above alarm control unit, When the above construction equipment is located in the above work restriction area, An alarm control system for a construction machine that operates the audible alarm unit when the operating lever is operated so that the construction machine moves toward the work restriction area.

5. In paragraph 1 The above alarm control unit, An alarm control system for a construction machine that does not operate the audible alarm unit when the remaining distance or remaining angle from the construction machine to the work restriction area increases.

6. In paragraph 1 The above alarm control unit, An alarm control system for a construction machine, which does not operate the audible alarm unit when there is no possibility that the construction machine will encroach on any of the set work restriction areas, when there are multiple work restriction areas.

7. In paragraph 1 The above alarm control unit, An alarm control system for a construction machine, which controls the size of an audible alarm of the audible alarm unit to increase as the construction machine approaches the work restriction area.

8. In paragraph 1 The above alarm control unit, An alarm control system for a construction machine, which controls the color saturation of the visual alarm of the visual alarm unit to increase as the construction machine approaches the work restriction area.

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