Movement management system, use management method, and pinch prevention method

Abstract

To efficiently manage the use of a vehicle for high lift work by grasping the moving state of the vehicle for high lift work with high accuracy.SOLUTION: A movement management system (100) for managing the movement of a vehicle (1) for working at a height is provided with the vehicle (1) for working at a height, and a computer (5) which is provided at a position away from the vehicle (1) for working at a height and manages the movement of the vehicle (1) for working at a height, wherein the vehicle (1) for working at a height has a millimeter wave sensor (342) for detecting the distance to a surrounding object by transmitting and receiving millimeter waves, and a communication module (343) for transmitting the detection result of the millimeter wave sensor (342) to the computer (5).SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to a movement management system, a usage management method, and a pinch prevention method. [Background technology]

[0002] Various types of aerial work vehicles have been used in the past at high-altitude work sites and the like. The aerial work vehicle can move the entire vehicle horizontally with a worker on the work platform, and can also move the work platform vertically to adjust the distance to surrounding objects. For example, Patent Document 1 discloses an aerial work vehicle equipped with a pinch prevention device that uses an ultrasonic sensor to detect objects without contact and prevents a worker on the work platform from being pinched between objects. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2023-42920 Summary of the Invention [Problem to be solved by the invention]

[0004] Here, the entrapment prevention device for the aerial work vehicle in Patent Document 1 uses an ultrasonic sensor, but ultrasonic sensors have a short measurement distance and are prone to a decrease in reception strength due to dust, fog, etc., so they may not be suitable for use depending on the type and location of the aerial work. Also, sensors other than ultrasonic sensors, such as barometers, can detect the altitude when there is a large difference in air pressure, such as whether the aerial work vehicle is on the first or second floor, but it is difficult to detect the distance from the object.

[0005] Furthermore, at high-altitude work sites, multiple aerial work vehicles are often used. However, depending on the progress of the high-altitude work, there may be a discrepancy between the number of aerial work vehicles actually used and the number of aerial work vehicles deployed at the high-altitude work site. In other words, there may be more aerial work vehicles deployed at the high-altitude work site than necessary. Deploying more aerial work vehicles than necessary can be harmful to the environment, such as by emitting unnecessary exhaust gases and supplying unnecessary power. Deploying more aerial work vehicles than necessary can also result in high costs, such as the need to lease the aerial work vehicles.

[0006] As described above, conventional aerial work platforms have low detection accuracy, making it difficult to manage their use. Therefore, the present invention aims to efficiently manage the use of aerial work platforms by grasping the movement status of the aerial work platform with high accuracy. [Means for solving the problem]

[0007] A first aspect of the present invention for solving the above problem is a movement management system that manages the movement of an aerial work vehicle, and is characterized in that the aerial work vehicle has a millimeter wave sensor that detects the distance to surrounding objects by transmitting and receiving millimeter waves, and a communication module that transmits the detection results of the millimeter wave sensor to the computer.

[0008] According to this aspect, the aerial work vehicle includes a millimeter-wave sensor that detects the distance to surrounding objects by transmitting and receiving millimeter waves, and a communication module that transmits the detection results of the millimeter-wave sensor to a computer. Millimeter waves have wavelengths ranging from 1 mm to 10 mm, are highly linear, and can ensure a wide bandwidth, making them suitable for high-speed communication and high-precision sensing. Furthermore, millimeter waves are resistant to environmental changes such as fog and dust. Therefore, they can be adapted to a wide range of conditions at aerial work sites and can grasp the movement status of the aerial work vehicle with high detection accuracy. This allows the movement status of the aerial work vehicle to be grasped with high accuracy, enabling efficient management of the use of the aerial work vehicle.

[0009] A second aspect of the movement management system of the present invention is an aspect dependent on the first aspect, and is characterized in that the aerial work vehicle has a plurality of millimeter wave sensors, and each of the plurality of millimeter wave sensors is configured to be able to transmit and receive millimeter waves in different directions.

[0010] According to this aspect, the vehicle for working at height has multiple millimeter-wave sensors, each configured to be capable of transmitting and receiving millimeter waves in different directions, making it possible to detect the distance to an object with high accuracy in multiple directions, for example, vertically and horizontally.

[0011] A movement management system according to a third aspect of the present invention is an aspect dependent on the first or second aspect, characterized in that the aerial work vehicle has a handrail, and the millimeter wave sensor and the communication module are provided on the handrail.

[0012] According to this aspect, the vehicle for aerial work has a handrail, and the millimeter-wave sensor and the communication module are provided on the handrail. Since the handrail is often provided at the vertically upward end or the horizontal end of the vehicle for aerial work, the distance between the end of the vehicle for aerial work and the object can be accurately detected, and for example, it is possible to effectively prevent a worker from being pinched between the vehicle for aerial work and the object.

[0013] A mobility management system according to a fourth aspect of the present invention is an aspect dependent on the first or second aspect, characterized in that the millimeter-wave sensor and the communication module form a package together with a dry battery that serves as the power source for the millimeter-wave sensor and the communication module.

[0014] According to this aspect, the millimeter-wave sensor and the communication module are packaged together with a dry cell battery that serves as a power source for the millimeter-wave sensor and the communication module. This allows the millimeter-wave sensor and the communication module to be packaged together with the power source in a small package, and prevents the millimeter-wave sensor and the communication module from interfering with a worker working on an aerial work platform.

[0015] A movement management system according to a fifth aspect of the present invention is an aspect dependent on the fourth aspect, and is characterized in that the package has an inclination detection unit that detects an inclination of the package.

[0016] According to this aspect, the package has a tilt detection unit that detects the tilt of the package, so that if the package falls from a predetermined installation position of an aerial work platform, for example, the abnormality of the package can be reported to the computer.

[0017] A movement management system according to a sixth aspect of the present invention is an aspect dependent on the first or second aspect, and is characterized in that it includes an alarm unit in the aerial work vehicle that notifies that the distance detected by the millimeter wave sensor has become equal to or less than a threshold value.

[0018] According to this aspect, the vehicle for aerial work includes a notification unit that notifies the operator that the distance detected by the millimeter-wave sensor has fallen below a threshold value. Therefore, before the distance detected by the millimeter-wave sensor falls below the threshold value and there is a risk of a worker on the vehicle for aerial work being pinched between the vehicle for aerial work and an object, for example, the operator or a manager can be notified that the distance detected by the millimeter-wave sensor has fallen below the threshold value to prevent such a risk from occurring.

[0019] A usage management method according to a seventh aspect of the present invention is a usage management method in which a computer manages the use of a high-altitude work vehicle located at a remote location, characterized in that the high-altitude work vehicle is provided with a millimeter wave sensor that detects the distance to surrounding objects by sending and receiving millimeter waves, and a communication module that transmits the detection results of the millimeter wave sensor to the computer, and the computer grasps movement information of the aerial work vehicle based on the detection results of the millimeter wave sensor transmitted from the communication module, and manages the use of the aerial work vehicle based on the movement information.

[0020] According to this aspect, the computer grasps the movement information of the aerial work vehicle based on the detection results of the millimeter wave sensor transmitted from the communication module, and manages the use of the aerial work vehicle based on the movement information. Therefore, it is possible to respond to a wide range of conditions at aerial work sites and grasp the movement status of the aerial work vehicle with high detection accuracy. Therefore, since the movement status of the aerial work vehicle can be grasped with high accuracy, the use of the aerial work vehicle can be efficiently managed.

[0021] An eighth aspect of the present invention is a pinch prevention method that uses a computer to prevent the aerial work vehicle from being pinched between a distant aerial work vehicle and a surrounding object, and is characterized in that the aerial work vehicle is provided with a millimeter wave sensor that detects the distance to the surrounding object by sending and receiving millimeter waves, and a communication module that sends the detection results of the millimeter wave sensor to the computer, and the computer grasps the position information of the aerial work vehicle relative to the object based on the detection results of the millimeter wave sensor sent from the communication module, and manages the movement of the aerial work vehicle based on the position information to prevent the aerial work vehicle from being pinched between the aerial work vehicle and the object.

[0022] According to this aspect, the computer determines the position information of the aerial work vehicle relative to the object based on the detection results of the millimeter wave sensor transmitted from the communication module, and manages the movement of the aerial work vehicle based on the position information to prevent pinching between the aerial work vehicle and the object. Therefore, it is possible to respond to a wide range of situations at aerial work sites and to determine the position of the aerial work vehicle with high detection accuracy. Therefore, since the position of the aerial work vehicle can be determined with high accuracy, it is possible to effectively prevent pinching between the aerial work vehicle and the object. [Brief explanation of the drawings]

[0023] [Figure 1] 1 is a schematic diagram showing an example of an aerial work platform that can be used in the movement management system of the present invention. [Figure 2] 2 is a schematic diagram showing an example of an aerial work vehicle that can be used in the movement management system of the present invention, showing a state in which the work platform has been raised from the state shown in FIG. 1. FIG. [Figure 3] 2 is a schematic diagram showing an example of an aerial work vehicle that can be used in the movement management system of the present invention, showing a state in which the work platform has been lowered from the state shown in FIG. 1. FIG. [Figure 4] FIG. 1 is a block diagram showing an example of a package having a millimeter wave sensor, a communication module, and a dry battery that can be attached to an aerial work platform that can be used in the movement management system of the present invention. [Figure 5] 1 is a schematic diagram showing an example of an entire mobility management system of the present invention; [Figure 6] 1 is a schematic perspective view showing an example of mounting a package on an aerial work platform that can be used in the movement management system of the present invention. [Figure 7] 1 is a schematic plan view showing an example of a package orientation detection unit that can be attached to an aerial work platform and that can be used in the movement management system of the present invention. [Figure 8] FIG. 10 is a schematic plan view showing another example of a package orientation detection unit that can be attached to an aerial work platform and that can be used in the movement management system of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0024] 1 to 8, a movement management system 100 for managing the movement of an aerial work vehicle 1, a usage management method for managing the use of the aerial work vehicle 1, and a method for preventing pinching when using the aerial work vehicle 1 will be described below as an example of the present invention. As shown in FIGS. 1 to 3, the aerial work vehicle 1 comprises a traveling device 10, a lifting device 20, and a work platform 30.

[0025] The vehicle for aerial work 1 shown in Figures 1 to 3 is a vehicle equipped with a mechanism for working at heights. As shown in Figures 1 to 3, the vehicle for aerial work 1 can raise (see Figure 2) and lower (see Figure 3) a work platform 30 carrying a worker 40 along a vertical direction D1 toward an object located above, such as a ceiling 92 of a building. The vehicle for aerial work 1 can also travel in a movement direction D2, which intersects with the vertical direction D1, with the worker 40 on the work platform 30.

[0026] The traveling device 10 has wheels 11 that are driven under the control of a control unit 33 provided on the work platform 30. A worker 40 standing on the work platform 30 can control the traveling of the traveling device 10 relative to the floor surface 91 via the control unit 33. Meanwhile, a manager of the aerial work vehicle 1, located at a distance from the aerial work vehicle 1, can control the traveling of the traveling device 10 relative to the floor surface 91 via a computer 5 such as a PC (personal computer) 5A or a tablet terminal 5B shown in FIG. 5. The traveling device 10 may be any device that can travel using wheels 11 or the like, and preferably, for example, a device that travels using power from a drive source such as a motor.

[0027] The lifting device 20 raises and lowers the work platform 30 relative to the traveling device 10. In the aerial work vehicle 1 of this embodiment, the lifting device 20 is provided on top of the traveling device 10. As shown in Figures 1 to 3, the lifting device 20 is formed so as to be extendable and contractible along the up-and-down direction D1. The lifting device 20 is formed, for example, by a link mechanism.

[0028] The work platform 30 is raised and lowered relative to the traveling device 10 by the lifting device 20. The work platform 30 has a work floor 31 on which the worker 40 stands, a handrail 32 connected to the work floor 31 and which the worker 40 can hold, and a control unit 33 that can control the movement of the traveling device 10 and the elevation of the lifting device 20. However, the movement control of the traveling device 10 and the elevation control of the lifting device 20 can also be controlled by the manager of the aerial work platform 1 via a computer 5.

[0029] The worker 40 or the manager of the aerial work vehicle 1 controls the elevation of the lifting device 20 to raise the work platform 30 to the desired height, allowing the worker 40 on the work platform 30 to work at a height. The work platform 31 is the part on which the worker 40 stands, and is arranged so that the floor surface faces upward. In the aerial work vehicle 1 of this embodiment, the work platform 31 is provided above the lifting device 20. In the aerial work vehicle 1 of this embodiment, the work platform 31 is formed in a substantially rectangular shape (approximately oblong) in plan view. There are no particular limitations on the size or shape of the work platform 31, and it can be set to suit the high-altitude work site, etc.

[0030] The handrail 32 prevents the worker 40 from falling. In the aerial work platform 1 of this embodiment, the handrail 32 is formed so as to rise upward from the work platform 31 and is formed around the entire periphery of the work platform 31. In other words, the handrail 32 is formed in the shape of a fence on the work platform 30.

[0031] Although not shown in the drawing, the control unit 33 is provided with operation units such as a lever that can operate the traveling device 10 to travel (forward, backward, and turn right or left), a switch that can operate the lifting device 20 to raise and lower, and an emergency stop switch that can stop the lifting device 20 from raising and lowering. The worker 40 can operate the operation units (not shown) with his or her fingers (for example, the fingers of his or her right hand).

[0032] The handrail 32 is provided with a distance detection unit 34. More specifically, the distance detection unit 34 includes a first distance detection unit 34A provided at the upper end of the handrail 32 and a second distance detection unit 34B provided at the tip (leading end) of the handrail 32. As shown in Fig. 2, the first distance detection unit 34A can detect a distance L1 between the first distance detection unit 34A and an object substantially above, such as a ceiling 92, and the second distance detection unit 34B can detect a distance L2 between the second distance detection unit 34B and an object substantially in the horizontal direction, such as a beam 93 provided on the ceiling 92.

[0033] Here, the first distance detection unit 34A and the second distance detection unit 34B have substantially the same configuration, and both have the configuration shown in Fig. 4. As shown in Fig. 4, the first distance detection unit 34A and the second distance detection unit 34B each include a case 341, a millimeter wave sensor 342 that detects the distance to surrounding objects by transmitting and receiving millimeter waves, a communication module 343 that transmits the detection results of the millimeter wave sensor to the computer 5, a dry cell battery (AA battery) 344, a tilt switch 345, and a buzzer 346. However, the position of the tilt switch 345 differs between the first distance detection unit 34A and the second distance detection unit 34B, depending on the mounting position on the aerial work platform 1.

[0034] The case 341 has a square shape measuring 70 mm x 70 mm in plan view. The case 341 houses the millimeter-wave sensor 342, communication module 343, dry cell battery 344, tilt switch 345, and buzzer 346. For a built-in battery type, an LED (light-emitting diode) for indicating the battery level may be provided. The millimeter-wave sensor 342 uses electromagnetic waves with a wavelength of 1 mm to 10 mm, which provides greater linearity and a wider bandwidth than ultrasonic sensors that use shorter-wavelength electromagnetic waves, making it suitable for high-speed communication and high-precision sensing. This enables detection at distances of approximately 20 m, even in environments with poor visibility due to dust or haze. Another advantage is that the sensor is less susceptible to the effects of environmental temperature, the color of the object (e.g., dark colors), and the material of the object (e.g., thin materials or glass).

[0035] Here, for example, a 60 GHz millimeter-wave sensor module can be preferably used as the millimeter-wave sensor 342. In detail, for example, a 32-bit ARM MCU and XTAL are mounted on a 16 × 20 mm 28-terminal LGA (Land Grid Array) board, with a single 1.8 V power supply, an I / O interface voltage of 1.8 V or 3.3 V, an operating temperature of -40°C to 85°C, external interfaces of UART, 12C, GPIO, and Reset, a sensor distance of about 20 m, and a sensor radiation angle of about 40° to 10° can be preferably used.

[0036] Some high-altitude work sites and other environments are prone to dust, but by using the millimeter wave sensor 342, detection can be performed effectively even when dust is present, and it is also possible to omit covering the electromagnetic wave (millimeter wave) irradiation surface with a transparent cover. Furthermore, even if the electromagnetic wave irradiation surface is covered with a transparent cover, the frequency of cleaning can be reduced.

[0037] In environments where dust and other particles are likely to fly, the detection accuracy of ultrasonic sensors drops significantly, making it necessary to cover the electromagnetic wave irradiation surface with a transparent cover. Also, in environments with high humidity and haze, if the electromagnetic wave irradiation surface is covered with a transparent cover, water droplets and the like are likely to adhere to the transparent cover, but even if water droplets and the like adhere to the transparent cover, a configuration using millimeter wave sensor 342 can suppress the decline in detection accuracy compared to a configuration using an ultrasonic sensor.

[0038] A GPS (Global Positioning System) sensor 35 is provided at the front end of the work platform 30 to determine the position of the vehicle for aerial work 1. The administrator can use the computer 5 to determine the position of the vehicle for aerial work 1 based on the detection results of the GPS sensor 35. The distance detection unit 34 can wirelessly issue an alert when the detection result (distance to an object) of the GPS sensor 35 is greater than or less than a set distance. However, the position of the vehicle for aerial work 1 may be determined solely from the distance to the object detected by the millimeter-wave sensor 342 of the distance detection unit 34, without providing the GPS sensor 35. A wireless alert can also be issued if the distance detection unit 34 is displaced from its installation position. Furthermore, a speed sensor or the like may be provided to issue an alert if the vehicle for aerial work 1 exceeds a specified speed or to distinguish between vehicles and people passing by the vehicle for aerial work 1. In this embodiment, the system is configured so that the millimeter-wave sensor 342 can also be used as a speed sensor.

[0039] Here, an example of the entire mobility management system 100 of the present invention will be described with reference to Fig. 5. As shown in Fig. 5, the mobility management system 100 of this embodiment includes the aerial work vehicle 1 shown in Figs. 1 to 3. It also includes a gateway 3 that collects data sent from the gap detection unit 34 and GPS sensor 35 of the aerial work vehicle 1.

[0040] The mobility management system 100 of this embodiment is provided with a converter 2, and for example, the converter 2 converts BLE (Bluetooth Low Energy) transmitted from the interval detection unit 34 into LPWA, which is a low-power, wide-area network protocol, based on the LoRaWAN communication standard, and transmits the data to the gateway 3. On the other hand, data based on the LoRaWAN communication standard is transmitted from the GPS sensor 35 to the gateway 3.

[0041] The mobility management system 100 of this embodiment also includes a cloud 4, and data is transmitted from the gateway 3 to the cloud 4 using, for example, the LTE (Long Term Evolution) communication standard. The mobility management system 100 of this embodiment also includes a computer 5 such as a PC 5A or a tablet terminal 5B, and an administrator can control and manage the movement and use of the aerial work platform 1 via the computer 5 based on the data transmitted to the cloud 4.

[0042] As described above, the movement management system 100 of this embodiment, which manages the movement of the aerial work vehicle 1, comprises the aerial work vehicle 1 and a computer 5 that is located at a distance from the aerial work vehicle 1 and manages the movement of the aerial work vehicle 1. The aerial work vehicle 1 also has a millimeter wave sensor 342 that detects the distance to surrounding objects (such as the ceiling 92 and beams 93) by transmitting and receiving millimeter waves, and a communication module 343 that transmits the detection results of the millimeter wave sensor 342 to the computer 5.

[0043] Millimeter waves have wavelengths ranging from 1 mm to 10 mm, are highly linear, and can secure a wide bandwidth, making them suitable for high-speed communication and high-precision sensing. Furthermore, millimeter waves are resistant to environmental changes such as fog and dust. Therefore, the mobile management system 100 of this embodiment can adapt to a wide range of conditions at high-altitude work sites and can grasp the movement status of the aerial work vehicle 1 with high detection accuracy. In addition, it can detect the movement of the aerial work vehicle 1 not only when a large difference in air pressure occurs due to the movement of the aerial work vehicle 1, but also when the change in the distance to the ceiling 92 is small. Therefore, the mobile management system 100 of this embodiment can grasp the movement status of the aerial work vehicle 1 with high accuracy and efficiently manage the use of the aerial work vehicle 1. Note that "managing the use of the aerial work vehicle 1" means managing various usage conditions, such as whether the aerial work vehicle 1 is being used, whether the aerial work vehicle 1 is scheduled for future use, understanding the construction range of the aerial work, and, if the aerial work vehicle 1 is being used, what position the aerial work vehicle 1 is being used in relation to surrounding objects or what position it is planned to be used in the future.

[0044] To explain the above from the perspective of a method for managing the use of the vehicle for aerial work 1, the method for managing the use of the vehicle for aerial work 1 using the movement management system 100 of this embodiment is a method for managing the use of the vehicle for aerial work 1 located remotely from the computer 5 by using a computer 5. In detail, the vehicle for aerial work 1 is provided with a millimeter wave sensor 342 that detects the distance to surrounding objects by transmitting and receiving millimeter waves, and a communication module 343 that transmits the detection results of the millimeter wave sensor 342 to the computer 5. The computer 5 then grasps movement information of the vehicle for aerial work 1 based on the detection results of the millimeter wave sensor 342 transmitted from the communication module 343, and manages the use of the vehicle for aerial work 1 based on this movement information.

[0045] By implementing this method for managing the use of the vehicle for aerial work 1, it is possible to respond to a wide range of conditions at high-altitude work sites and to grasp with high detection accuracy the movement status of the vehicle for aerial work 1. Therefore, by implementing this method for managing the use of the vehicle for aerial work 1, it is possible to grasp with high accuracy the movement status of the vehicle for aerial work 1, and therefore to manage the use of the vehicle for aerial work 1 efficiently.

[0046] Furthermore, by using the mobile management system 100 of this embodiment, it is possible to implement a pinch prevention method that prevents the worker 40 from being pinched between the vehicle for aerial work 1 and an object such as a ceiling 92 or a beam 93. Therefore, the pinch prevention method will be described below from the perspective of the pinch prevention method. The pinch prevention method using the mobile management system 100 of this embodiment is a method that uses a computer 5 to prevent the worker 40 from being pinched between the vehicle for aerial work 1, which is located remotely from the computer 5, and a surrounding object. In detail, the vehicle for aerial work 1 is provided with a millimeter wave sensor 342 that detects the distance to the surrounding object by transmitting and receiving millimeter waves, and a communication module 343 that transmits the detection results of the millimeter wave sensor 342 to the computer 5. The computer 5 then determines position information of the vehicle for aerial work 1 relative to the object based on the detection results of the millimeter wave sensor 342 transmitted from the communication module 343, and manages the movement of the vehicle for aerial work 1 based on this position information, thereby preventing the worker 40 from being pinched between the vehicle for aerial work 1 and the object.

[0047] By implementing this type of entrapment prevention method, it is possible to respond to a wide range of situations at high-altitude work sites and to grasp with high detection accuracy the position of the vehicle for aerial work 1. Therefore, by implementing this type of entrapment prevention method, it is possible to grasp with high accuracy the position of the vehicle for aerial work 1, and effectively prevent the worker 40 from being entrapped between the vehicle for aerial work 1 and an object.

[0048] As described above, the mobile management system 100 of this embodiment is equipped with two distance detectors 34: a first distance detector 34A that detects the distance in a substantially upward direction, and a second distance detector 34B that detects the distance in a substantially horizontal direction. Explained from another perspective, the aerial work vehicle 1 of the mobile management system 100 of this embodiment has a plurality of millimeter-wave sensors 342, and each of the plurality of millimeter-wave sensors 342 is configured to be able to transmit and receive millimeter waves in different directions. Therefore, the mobile management system 100 of this embodiment can detect the distance to an object with high accuracy in a plurality of directions, namely the substantially vertical direction and the substantially horizontal direction.

[0049] As described above, the vehicle for aerial work 1 of the mobile management system 100 of this embodiment has a handrail 32, and the gap detection unit 34 having the millimeter wave sensor 342 and the communication module 343 is provided on the handrail 32. Since the handrail 32 is often provided at the vertically upward end or horizontal end of the vehicle for aerial work 1 as in the mobile management system 100 of this embodiment, this configuration makes it possible to accurately detect the gap between the end of the vehicle for aerial work 1 and an object. Therefore, this configuration can effectively prevent, for example, the worker 40 from being pinched between the vehicle for aerial work 1 and the object.

[0050] As described above, in the mobility management system 100 of this embodiment, the millimeter-wave sensor 342 and the communication module 343 are packaged together with the dry battery 344 that serves as the driving power source for the millimeter-wave sensor 342 and the communication module 343 (see FIG. 4). Therefore, in the mobility management system 100 of this embodiment, the gap detection unit 34 can be packaged in a small size together with the driving power source for the millimeter-wave sensor 342 and the communication module 343, and it is possible to prevent the millimeter-wave sensor 342 and the communication module 343 from getting in the way of the worker 40 working on the aerial work platform 1. The dry battery 344 also includes a secondary battery that can be repeatedly recharged and used.

[0051] Furthermore, as described above, the gap detection unit 34 constituting such a package has a tilt switch 345 as a tilt detection unit that detects the tilt of the gap detection unit 34. Therefore, the movement management system 100 of this embodiment can notify the computer 5 of an abnormality in the gap detection unit 34, for example, if the gap detection unit 34 falls from a predetermined installation position on the aerial work platform 1.

[0052] Here, the tilt detection unit is not particularly limited and may have a different configuration from tilt switch 345 of this embodiment. Tilt switch 345 of this embodiment, which will be described in detail later, is a small cylindrical part (cylindrical part 345A) with a small ball (spherical part 345B) inside, and is a tilt switch in which an electric switch turns ON or OFF when the tilt of the small cylindrical part changes.

[0053] As described above, the interval detection unit 34 of the mobile management system 100 of this embodiment has a buzzer 346 as shown in FIG. 4 . The buzzer 346 generates a buzzer sound when the interval detected by the millimeter wave sensor 342 falls below a threshold. That is, the buzzer 346 serves as an alarm unit that notifies the aerial work platform vehicle 1 that the interval detected by the millimeter wave sensor 342 has fallen below the threshold. Therefore, the mobile management system 100 of this embodiment can notify the worker 40 on the aerial work platform vehicle 1, for example, that the interval detected by the millimeter wave sensor 342 has fallen below the threshold, or a manager who manages the movement of the aerial work platform vehicle 1 using the computer 5, before the interval detected by the millimeter wave sensor 342 falls below the threshold and there is a risk of the worker 40 on the aerial work platform vehicle 1 being pinched between the aerial work platform vehicle 1 and an object, in order to prevent such a risk from occurring.

[0054] Here, with reference to Fig. 6, an example of attaching the gap detection unit 34 (package) to the aerial work platform 1 that can be used in the movement management system 100 of this embodiment will be described. As shown in Fig. 6, the gap detection unit 34 (first gap detection unit 34A) can be attached to the handrail 32 by being fastened with a band 348 or the like. In Fig. 6, the gap detection unit 34 is configured to be fastened to the handrail 32 with one band 348, but the gap detection unit 34 may also be configured to be fastened to the handrail 32 with multiple bands 348. The second gap detection unit 34B has approximately the same configuration as the first gap detection unit 34A.

[0055] 6, there is a possibility that the gap detection unit 34 may be displaced by rotating, for example, in the rotation direction R relative to the handrail 32. Therefore, with reference to FIGS. 7 and 8, an example of a tilt switch 345, which is a tilt detection unit of the gap detection unit 34 (package) that can be attached to the aerial work platform 1 that can be used in the movement management system 100 of this embodiment, will be described.

[0056] The gap detection unit 34 shown in FIG. 7 includes a tilt switch 345 having cylindrical portions 345A extending in four directions from near the center in a plan view and spherical portions 345B disposed on each cylindrical portion 345A. The spherical portions 345B are configured to be movable inside the cylindrical portion 345A in the extension direction of the cylindrical portion 345A and move downward when the extension direction of the cylindrical portion 345A is tilted from the horizontal. With this configuration, the gap detection unit 34 of this embodiment can detect whether or not the gap detection unit 344 is tilted from the horizontal direction using the tilt switch 345. As described above, the first gap detection unit 34A and the second gap detection unit 34B have substantially the same configuration. However, in this embodiment, the cylindrical portions 345A of the tilt switches 345 of both the first gap detection unit 34A and the second gap detection unit 34B are configured to be arranged as shown in FIG. 7 when viewed from above.

[0057] On the other hand, the gap detection unit 34 shown in Fig. 8 also has, as tilt switches 345, cylindrical portions 345A extending in four directions from near the center in a plan view, and spherical portions 345B disposed on each cylindrical portion 345A. As with the gap detection unit 34 shown in Fig. 7, in the gap detection unit 34 shown in Fig. 8, spherical portions 345B are configured to be movable inside the cylindrical portion 345A in the extension direction of the cylindrical portion 345A, and move downward when the extension direction of the cylindrical portion 345A is tilted from the horizontal. In this way, the gap detection unit 34 shown in Fig. 8 has a simpler configuration than the gap detection unit 34 shown in Fig. 7, and can detect whether or not there is tilt with respect to the horizontal direction using tilt switches 345.

[0058] It goes without saying that the present invention is not limited to the above-described embodiments, and various modifications are possible within the scope of the invention as defined in the claims, and these modifications are also included within the scope of the present invention. [Explanation of symbols]

[0059] 1...aerial work platform, 2...converter, 3...gateway, 4...cloud, 5...computer, 5A...PC, 5B...tablet terminal, 10...traveling device, 11...wheel, 20...lifting device, 30...work platform, 31...work floor, 32...handrail, 33...control unit, 34...gap detection unit (package), 34A...first gap detection unit, 34B...second gap detection unit, 35...GPS sensor, 40...worker, 91...floor, 92...ceiling, 93...beam, 341...case, 342...millimeter wave sensor, 343...communication module, 344...dry battery (driving power source), 345...tilt switch (tilt detection unit), 345A...cylindrical part, 345B...sphere part, 346...buzzer (alarm unit), 348...band, L1...gap, L2...gap

Claims

1. A movement management system for managing the movement of an aerial work vehicle, The aerial work vehicle is provided with: a computer that is provided at a position remote from the aerial work vehicle and that manages the movement of the aerial work vehicle; The aerial work vehicle is characterized by having a millimeter wave sensor that detects the distance to surrounding objects by sending and receiving millimeter waves, and a communication module that transmits the detection results of the millimeter wave sensor to the computer.

2. The mobility management system according to claim 1, the aerial work vehicle has a plurality of the millimeter wave sensors, A mobility management system characterized in that the plurality of millimeter wave sensors are configured to be capable of transmitting and receiving millimeter waves in different directions.

3. 3. The mobility management system according to claim 1, The aerial work vehicle has a handrail, A mobility management system characterized in that the millimeter wave sensor and the communication module are provided on the handrail.

4. 3. The mobility management system according to claim 1, A mobility management system characterized in that the millimeter wave sensor and the communication module form a package together with a dry battery that serves as a power source for the millimeter wave sensor and the communication module.

5. 5. The mobility management system according to claim 4, The package has a tilt detection unit that detects the tilt of the package.

6. 3. The mobility management system according to claim 1, A movement management system comprising an alarm unit that notifies the aerial work vehicle that the distance detected by the millimeter wave sensor has become equal to or less than a threshold value.

7. A usage management method for managing the usage of a remotely located aerial work platform by a computer, comprising: The vehicle for high-altitude work is provided with a millimeter wave sensor that detects the distance to surrounding objects by transmitting and receiving millimeter waves, and a communication module that transmits the detection results of the millimeter wave sensor to the computer, A usage management method characterized in that the computer grasps movement information of the aerial work vehicle based on the detection results of the millimeter wave sensor transmitted from the communication module, and manages the use of the aerial work vehicle based on the movement information.

8. A pinch prevention method for preventing a user from being pinched between a remotely located aerial work platform and a surrounding object by using a computer, comprising: The vehicle for high-altitude work is provided with a millimeter wave sensor that detects the distance to surrounding objects by transmitting and receiving millimeter waves, and a communication module that transmits the detection results of the millimeter wave sensor to the computer, A pinch prevention method characterized in that the computer determines the position information of the aerial work vehicle relative to the object based on the detection results of the millimeter wave sensor transmitted from the communication module, and manages the movement of the aerial work vehicle based on the position information to prevent pinch between the aerial work vehicle and the object.

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