Work management device, work management system, and work management method

Abstract

To provide a work management device capable of improving the safety of a worker.SOLUTION: A work management device 10 comprises: a sensor unit 13 that includes a first sensor 131 that is worn by a worker and acquires spatial information of an area surrounding the worker, and a second sensor 132 that acquires hooking information indicating a hooking state of a hook F of a lifeline R1 worn by the worker; a control unit 15 that executes a first determination process for determining whether or not a work site is a site where the worker is at risk of falling on the basis of the spatial information and a second determination process for determining whether or not the hook F is hooked to a hooking target R2 on the basis of the hooking information; and an output unit 14 that outputs notification information from the control unit 15 toward the worker when the control unit 15 determines that the work site is a site where the worker is at risk of falling and that the hook F is not hooked to the hooking target R2.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present disclosure relates to a work management device, a work management system, and a work management method. [Background technology]

[0002] Conventionally, there are known techniques for improving the safety of workers working at heights at construction sites, etc. For example, Patent Document 1 discloses a monitoring system for preventing workers from forgetting to fasten their safety belt hooks, which prevents workers from forgetting to fasten their safety hooks and allows managers to grasp the current location of each worker to ensure their safety. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 6936546 Summary of the Invention [Problem to be solved by the invention]

[0004] However, the conventional technology described in Patent Document 1 does not sufficiently consider how to more accurately determine from the worker's perspective whether or not a work location is at risk of a worker falling, and how to update the determination process in real time. As a result, there is room for improvement in terms of worker safety.

[0005] An object of the present disclosure is to provide a work management device, a work management system, and a work management method that can improve the safety of workers. [Means for solving the problem]

[0006] A work management device according to a first aspect for solving the above problems comprises: a sensor unit including a first sensor worn by a worker to acquire spatial information about the worker's surroundings, and a second sensor to acquire hooking information indicating a hooking state of a hook of a lifeline worn by the worker; a control unit that executes a first determination process that determines whether or not the work location is one where the worker may fall, based on the spatial information, and a second determination process that determines whether or not the hook is engaged with an engagement target, based on the engagement information; an output unit that outputs notification information from the control unit to the worker when the control unit determines that the work location is a work location where there is a possibility of the worker falling and that the hook is not engaged with the engaging object; Equipped with.

[0007] The work management system from the second perspective is: The above work management device; an information processing device that acquires the spatial information, the hanging information, and information on the determination results of the first determination process and the second determination process from the work management device as work history information; Equipped with.

[0008] The work management method from the third perspective is as follows: using a first sensor worn by a worker to acquire spatial information about the surroundings of the worker, and executing a first determination process to determine whether or not the work location is one where there is a risk of the worker falling, based on the spatial information; using a second sensor that acquires hooking information indicating a hooking state of a hook of a lifeline worn by the worker, and executing a second determination process that determines whether the hook is hooked on a hooking target based on the hooking information; When it is determined that the work location is a location where there is a possibility that the worker may fall and that the hook is not engaged with the engagement target, outputting notification information to the worker; Includes: [Effects of the Invention]

[0009] According to a work management device, a work management system, and a work management method according to an embodiment of the present disclosure, it is possible to improve the safety of workers. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a configuration diagram illustrating an example of a configuration of a work management system according to an embodiment of the present disclosure. [Figure 2] 2 is a block diagram showing an example of the configuration of the work management system of FIG. 1. FIG. [Figure 3] 2 is a schematic diagram illustrating an example of the configuration of the work management device of FIG. 1 alone. FIG. [Figure 4A] 3 is a schematic diagram showing a first example of the configuration of the sensor unit in FIG. 2. FIG. [Figure 4B] 3 is a schematic diagram showing a second example of the configuration of the sensor unit in FIG. 2. FIG. [Figure 5A] 3 is a schematic diagram showing a third example of the configuration of the sensor unit in FIG. 2. FIG. [Figure 5B] 2. FIG. 4 is a schematic diagram showing a fourth example of the configuration of the sensor unit in FIG. [Figure 6] 2 is a flowchart illustrating an example of a work management method executed by the work management device of FIG. 1. [Figure 7] 2 is a sequence diagram illustrating an example of a work management method executed by the work management system of FIG. 1. FIG. [Figure 8] 1. FIG. 4 is a first schematic diagram for explaining an example of an operation executed by the work management device of FIG. [Figure 9] 1. FIG. 4 is a second schematic diagram illustrating an example of an operation executed by the work management device of FIG. [Figure 10] 1. FIG. 4 is a third schematic diagram illustrating an example of an operation executed by the work management device of FIG. [Figure 11] 1. FIG. 4 is a fourth schematic diagram illustrating an example of an operation executed by the work management device of FIG. DETAILED DESCRIPTION OF THE INVENTION

[0011] The background and problems of the prior art will now be described in more detail.

[0012] In the past, to reduce the possibility of falls during work at heights such as at construction sites, work procedures have been formulated to first reduce the number of times workers work at height. For example, multiple materials are assembled on the ground and then lifted and installed at high altitudes. Next, when work at heights is unavoidable, protective equipment such as handrails are installed around the scaffolding to reduce the possibility of workers falling. However, the protective equipment's functionality is incomplete when assembling and dismantling the scaffolding and handrails.

[0013] In these types of workplaces, workers typically wear a device called a fall arrest device, which has a lifeline attached, such as a lanyard, and fasten the hook attached to the end of the lifeline to a stable object nearby. This allows the fall arrest device to suspend the worker in case of a fall, stopping the worker's free fall. Furthermore, the work supervisor, who acts as the manager overseeing the workers, visually checks whether the hook is in use and warns any worker who has forgotten to fasten the hook.

[0014] At construction sites, for example, a lot of work is done at height to build large structures, and the temporary scaffolding equipment used for this is frequently assembled and disassembled. Furthermore, the work area is large, and it is possible that the view is obstructed by the structures and construction materials, making it impossible for the work supervisor to visually check the worker. Therefore, in work areas where there is a risk of a worker falling, when the worker forgets to fasten the hook of the fall arrest device's lifeline and the work supervisor is unable to visually check the worker and issue a warning, worker falls tend to occur.

[0015] In order to solve the above-mentioned problems, the present disclosure aims to provide a work management device, a work management system, and a work management method that can improve worker safety. For example, the present disclosure aims to provide a technology that can more accurately determine whether a work location is at risk of a worker falling from the worker's perspective and update the determination process in real time.

[0016] The following mainly describes an embodiment of the present disclosure with reference to the accompanying drawings. The following description also applies to a work management system 1 including a work management device 10 and a work management method executed by the work management device 10, to which the present disclosure is applied.

[0017] Fig. 1 is a configuration diagram that schematically illustrates an example of the configuration of a work management system 1 according to an embodiment of the present disclosure. Fig. 2 is a block diagram that illustrates an example of the configuration of the work management system 1 of Fig. 1. Fig. 3 is a schematic diagram that schematically illustrates an example of the configuration of the work management device 10 of Fig. 1 alone.

[0018] 1 to 3, an example of the configuration and functions of a work management system 1 including a work management device 10 according to an embodiment of the present disclosure will be mainly described. In addition to the work management device 10, the work management system 1 includes an information processing device 20 and a terminal device 30.

[0019] 1 and 2 show only one of each of the work management device 10, information processing device 20, and terminal device 30 for ease of explanation, but the number of each device included in the work management system 1 may be two or more. Each of the work management device 10, information processing device 20, and terminal device 30 is connected to a network 40, which may include a mobile communication network and the Internet, so as to be able to communicate with each other.

[0020] The work management device 10 is a device that operates in a state where each component of the work management device 10 is worn by a worker. The work management device 10 is used by the worker himself in a state where it is worn by the worker.

[0021] In one embodiment, the work management device 10 is worn by a worker and acquires spatial information about the worker's surroundings. In this disclosure, "spatial information" includes, for example, three-dimensional information such as the distribution of elevation differences in the space around the worker relative to the scaffolding erected at the work site and on which the worker is positioned, and the distance from the worker's position to the position where the elevation difference distribution is obtained. The work management device 10 acquires hooking information indicating the hooking state of the hook of the lifeline worn by the worker. In this disclosure, "hooking state" refers to, for example, whether or not the hook is hooked to an object such as a hooking target or a holder.

[0022] The work management device 10 executes a first determination process to determine whether the work location is one where a worker may fall, based on the acquired spatial information. The work management device 10 executes a second determination process to determine whether the hook is attached to the attachment target, based on the acquired hooking information. When the work management device 10 determines in the first determination process that the work location is one where a worker may fall and determines in the second determination process that the hook is not attached to the attachment target, it outputs notification information to the worker. In the present disclosure, the "attachment target" includes, for example, any object onto which the hook of a lifeline can be attached. In the following description, as an example, the attachment target is described as a lifeline, but the scope of the present disclosure is not limited thereto. The "notification information" includes, for example, a warning to make the worker aware that the hook is not attached to the lifeline in a work location where a worker may fall.

[0023] The information processing device 20 includes, for example, one or more server devices that can communicate with each other. The information processing device 20 is not limited to these and may include any general-purpose electronic device such as a PC (Personal Computer) or a smartphone, or may include other electronic devices dedicated to the work management system 1. The information processing device 20 is managed by an operator who manages the safety of workers at work sites, for example, in cooperation with the work management device 10 and terminal device 30.

[0024] The terminal device 30 includes, for example, general-purpose electronic devices such as PCs, tablet PCs, smartphones, and wearable devices such as smartwatches. The terminal device 30 is, for example, an electronic device used by a manager who manages workers. In the present disclosure, the "manager" includes, for example, a work supervisor who manages the safety of workers at a work site and a safety manager who manages the safety of workers at a business office located remotely from the work site. The terminal device 30 is not limited to these, and may include one or more server devices used by the manager that can communicate with each other, or may include other electronic devices dedicated to the work management system 1.

[0025] An example of the schematic configuration of each of the work management device 10, information processing device 20, and terminal device 30 included in the work management system 1 will be mainly described with reference to FIG.

[0026] The work management system 1 includes a work management device 10 having a communication unit 11, a storage unit 12, a sensor unit 13, an output unit 14, and a control unit 15.

[0027] The communication unit 11 has one or more communication interfaces. The communication interfaces include, for example, one or more communication interfaces connected to a network 40. The communication interfaces are compatible with mobile communication standards such as 4th Generation (4G) and 5th Generation (5G), wired Local Area Network (LAN) standards, or wireless LAN standards, but are not limited to these and may be compatible with any communication standard. In one embodiment, the work management device 10 is communicatively connected to the network 40 via the communication unit 11. The communication unit 11 transmits and receives various information via the network 40.

[0028] Additionally, the communication interface of the communication unit 11 may be compatible with any wireless communication standard or wired communication standard for performing wireless or wired communication. The wireless communication standard includes Bluetooth (registered trademark), Wi-Fi (registered trademark), ZigBee (registered trademark), and any other short-range wireless communication standard. The wired communication standard includes communication standards such as USB (Universal Serial Bus).

[0029] The storage unit 12 has storage modules such as a hard disk drive (HDD), a solid state drive (SSD), an electrically erasable programmable read-only memory (EEPROM), a read-only memory (ROM), and a random access memory (RAM). The storage unit 12 stores information necessary to realize the operation of the work management device 10. The storage unit 12 stores information obtained by the operation of the work management device 10. The storage unit 12 stores system programs, application programs, and various data acquired by any means such as communication.

[0030] The memory unit 12 may function as a main memory module, an auxiliary memory module, or a cache memory. The memory unit 12 is not limited to being built into the work management device 10, and may include an external memory module connected via a digital input / output port such as a USB.

[0031] As shown in Fig. 3, the sensor unit 13 has a plurality of sensors. The plurality of sensors includes a first sensor 131 that is worn by a worker and acquires spatial information about the worker's surroundings. The first sensor 131 includes, for example, a ranging module that can measure the distance to an object. The ranging module includes a LiDAR (Light Detection and Ranging) and an ultrasonic element array using a plurality of ultrasonic elements. Alternatively, the first sensor 131 may include an imaging module that includes a camera such as a monocular camera or a compound eye camera.

[0032] The plurality of sensors includes a second sensor 132 that acquires hooking information indicating the hooking state of the hook F of the lifeline R1 worn by the worker. The second sensor 132 includes, for example, a module that can acquire information required for the control unit 15 to determine whether the hook F of the lifeline R1 is hooked to the master rope R2. The module includes a displacement sensor 132a, a magnetic sensor 132b, and a rotation sensor 132c, which will be described later.

[0033] The multiple sensors further include a third sensor 133, described below, that acquires posture information of the worker wearing the first sensor 131. In the present disclosure, "posture information" includes any information related to the posture of the worker, such as the tilt angle from horizontal of the part of the worker where the first sensor 131 is located, and the tilt angle from horizontal of the entire upper body of the worker wearing the first sensor 131. The third sensor 133 includes a gyro sensor, an acceleration sensor, an inertial sensor, etc.

[0034] The plurality of sensors further includes a fourth sensor 134 that acquires location information of the work location. In the present disclosure, "location information" includes altitude, latitude, longitude, address, and the like. The fourth sensor 134 includes, for example, one or more receivers compatible with any satellite positioning system. The receiver includes, for example, a Global Navigation Satellite System (GNSS) receiver such as a Global Positioning System (GPS) receiver. The fourth sensor 134 may also include a barometer. The fourth sensor 134 is worn by the worker and acquires measurements of the worker's location as location information. The fourth sensor 134 may acquire the worker's location information continuously, periodically, or irregularly.

[0035] The output unit 14 has one or more output modules that output information to provide it to the worker, including a first output module 141 that outputs information visually as an image, a second output module 142 that outputs information audibly as sound, and a vibrator that outputs information tactilely as vibration.

[0036] The first output module 141 is worn by, for example, a worker. The first output module 141 includes a wearable device such as a smart watch, and a display including an LCD (Liquid Crystal Display) and an organic EL (Electro Luminescence) display. The second output module 142 is worn by, for example, a worker. The second output module 142 includes an earphone, a headphone, a speaker, and the like.

[0037] The control unit 15 includes one or more processors. The processors may be, but are not limited to, general-purpose processors or dedicated processors specialized for specific processing. The control unit 15 includes, for example, a CPU (Central Processing Unit). The control unit 15 is communicably connected to each component of the work management apparatus 10 and controls the operation of the entire work management apparatus 10.

[0038] A worker working at a work site wears fall arrest equipment A. As an example, each component of the work management device 10 is worn by the worker wearing the fall arrest equipment A. For example, the communication unit 11, memory unit 12, control unit 15, and fourth sensor 134 of the sensor unit 13 of the work management device 10 may be housed together in a box or the like and attached to the part of the fall arrest equipment A that is located around the worker's chest.

[0039] For example, the first sensor 131 of the sensor unit 13 of the work management device 10 may be attached to a helmet worn by the worker together with the fall arrest device A. For example, the second sensor 132 of the sensor unit 13 of the work management device 10 may be attached to a part of the fall arrest device A that is located around the worker's chest. For example, the first output module 141 of the output unit 14 of the work management device 10 may be attached to the worker's arm. For example, the second output module 142 of the output unit 14 of the work management device 10 may be attached to the worker's ear.

[0040] A worker wears the above-described work management device 10 together with a fall arrest device A and attaches the lifeline R1 of the fall arrest device A to the main rope R2 to prevent himself from falling from the work site. For example, the worker hooks a hook F attached to the tip of the lifeline R1 onto the main rope R2, and performs work at the work site where the main rope R2 is installed while being supported by the main rope R2 via the lifeline R1.

[0041] 2 again, the following mainly describes the configuration of the information processing device 20 included in the work management system 1. The information processing device 20 has a communication unit 21, a storage unit 22, and a control unit 23.

[0042] The communication unit 21 has one or more communication interfaces connected to the network 40. The communication interfaces are compatible with mobile communication standards such as 4G and 5G, wired LAN standards, or wireless LAN standards, but are not limited to these and may be compatible with any communication standard. In one embodiment, the information processing device 20 is communicably connected to the network 40 via the communication unit 21. The communication unit 21 transmits and receives various information via the network 40.

[0043] The storage unit 22 has storage modules such as an HDD, an SSD, an EEPROM, a ROM, and a RAM. The storage unit 22 stores information necessary to realize the operation of the information processing device 20. The storage unit 22 stores information obtained by the operation of the information processing device 20. The storage unit 22 stores system programs, application programs, and various data acquired by any means such as communication.

[0044] The storage unit 22 may function as a main storage module, an auxiliary storage module, or a cache memory. The storage unit 22 is not limited to being built into the information processing device 20, and may include an external storage module connected via a digital input / output port such as a USB.

[0045] The control unit 23 includes one or more processors. The processors may be, but are not limited to, general-purpose processors or dedicated processors specialized for specific processing. The control unit 23 includes, for example, a CPU. The control unit 23 is communicably connected to each component of the information processing device 20 and controls the operation of the information processing device 20 as a whole.

[0046] The following mainly describes the configuration of the terminal device 30 included in the work management system 1. The terminal device 30 has a communication unit 31, a storage unit 32, an input unit 33, an output unit , and a control unit .

[0047] The communication unit 31 has one or more communication interfaces connected to the network 40. The communication interfaces are compatible with mobile communication standards such as 4G and 5G, wired LAN standards, or wireless LAN standards, but are not limited to these and may be compatible with any communication standard. In one embodiment, the terminal device 30 is communicably connected to the network 40 via the communication unit 31. The communication unit 31 transmits and receives various information via the network 40.

[0048] The storage unit 32 has storage modules such as an HDD, an SSD, an EEPROM, a ROM, and a RAM. The storage unit 32 stores information necessary to realize the operation of the terminal device 30. The storage unit 32 stores information obtained by the operation of the terminal device 30. The storage unit 32 stores system programs, application programs, and various data acquired by any means such as communication.

[0049] The storage unit 32 may function as a main storage module, an auxiliary storage module, or a cache memory. The storage unit 32 is not limited to being built into the terminal device 30, and may include an external storage module connected via a digital input / output port such as a USB.

[0050] The input unit 33 has one or more input interfaces that detect user input and acquire input information based on the user's operation. The input interfaces include physical keys, capacitive keys, a touch screen that is integrated with the display of the output unit 34, an imaging module such as a camera, and a microphone that accepts audio input.

[0051] The output unit 34 has one or more output interfaces that output information to provide it to the user, including a display that outputs information visually as an image, a speaker that outputs information audibly as sound, and a vibrator that outputs information tactilely as vibration.

[0052] The control unit 35 includes one or more processors. The processors may be, but are not limited to, general-purpose processors or dedicated processors specialized for specific processing. The control unit 35 includes, for example, a CPU. The control unit 35 is communicably connected to each component of the terminal device 30 and controls the operation of the entire terminal device 30.

[0053] 4A is a schematic diagram showing a first example of the configuration of the sensor unit 13 in FIG. 2. As a first example of the configuration of the sensor unit 13, FIG. 4A shows a part of the configuration of the sensor unit 13 when a third sensor 133 is used in combination with a first sensor 131. In the sensor unit 13, for example, the third sensor 133 is arranged in combination with the first sensor 131 configured by LiDAR. As an example, the third sensor 133 is arranged directly above the first sensor 131 and is connected to the first sensor 131. The third sensor 133 acquires posture information of the worker wearing the first sensor 131.

[0054] 4B is a schematic diagram showing a second example of the configuration of the sensor unit 13 of FIG. 2. As a second example of the configuration of the sensor unit 13, FIG. 4B shows a part of the configuration of the sensor unit 13 when a gimbal structure 135 is used in combination with a first sensor 131. In the sensor unit 13, for example, the gimbal structure 135 is arranged in combination with the first sensor 131 configured by LiDAR. As an example, the gimbal structure 135 is arranged directly above the first sensor 131 and is configured integrally with the first sensor 131. The gimbal structure 135 of the sensor unit 13 is attached to the first sensor 131 and maintains the collimation direction of the first sensor 131 toward the scaffolding of the work site.

[0055] 5A is a schematic diagram showing a third example of the configuration of the sensor unit 13 of FIG. 2. The second sensor 132 of the sensor unit 13 may be disposed in at least one location on the fall arrest device A. In the third example shown in FIG. 5A, the second sensor 132 includes a displacement sensor 132a attached to a portion of the fall arrest device A that is located near the worker's chest, and a magnetic sensor 132b attached to the hook portion F1 of the hook F attached to the tip of the lifeline R1 of the fall arrest device A. While FIG. 5A shows both the displacement sensor 132a and the magnetic sensor 132b as an example, the second sensor 132 of the sensor unit 13 may include only one of them.

[0056] The second sensor 132 is attached to, for example, a holder H of the fall arrest device A worn by the worker, and includes a displacement sensor 132a that detects that the hook F is not engaged with the holder H. The displacement sensor 132a turns to an OFF state when the hook F is engaged with the holder H and the holder H moves downward due to the weight of the hook F. On the other hand, the displacement sensor 132a turns to an ON state when the hook F is detached from the holder H and the holder H, released from the weight of the hook F, returns upward. When the displacement sensor 132a turns to an ON state, it detects that the hook F is not engaged with the holder H. The displacement sensor 132a outputs a detection signal to the control unit 15.

[0057] The second sensor 132 includes, for example, a magnetic sensor 132b attached to the hook F and detecting that the hook F is hooked on the holder H of the fall arrest device A worn by the worker. The magnetic sensor 132b reacts to contact with or proximity to a metallic object and turns on. For example, the magnetic sensor 132b is disposed on the hooking portion F1 of the hook F, and comes into contact with or proximity to the metallic holder H when the hook F is hooked on the holder H. This turns the magnetic sensor 132b on. The magnetic sensor 132b in the on state detects that the hook F is hooked on the holder H. The magnetic sensor 132b outputs a detection signal to the control unit 15. On the other hand, when the hook F is removed from the holder H and separated from the metallic holder H, the magnetic sensor 132b turns off. For example, the magnetic sensor 132b does not react even when the hook F is hooked on a non-metallic master rope R2, and remains in the off state continuously.

[0058] Fig. 5B is a schematic diagram showing a fourth example of the configuration of the sensor unit 13 of Fig. 2. In the fourth example shown in Fig. 5B, the second sensor 132 includes a rotation sensor 132c disposed at the base of the latching portion F1 of the hook F.

[0059] The second sensor 132 includes, for example, a rotation sensor 132c attached to the hook F and detecting the rotational movement of the hooking portion F1 of the hook F. For example, the rotation sensor 132c turns on when the hook F is hooked on the master rope R2 or the holder H and the hooking portion F1 rotates clockwise in FIG. 5B. The rotation sensor 132c turns on to detect the rotational movement of the hooking portion F1. The rotation sensor 132c outputs a detection signal to the control unit 15. On the other hand, when the hook F is released from the master rope R2 or the holder H and the hooking portion F1 rotates counterclockwise in FIG. 5B and returns to its original position, the rotation sensor 132c does not react and remains in the off state continuously.

[0060] Fig. 6 is a flowchart for explaining an example of a work management method executed by the work management apparatus 10 of Fig. 1. With reference to Fig. 6, the example of the work management method executed by the control unit 15 of the work management apparatus 10 of Fig. 1 will be mainly explained.

[0061] In step S101, the control unit 15 of the work management apparatus 10 uses the fourth sensor 134 to acquire position information of the work location where the worker is performing work.

[0062] In step S102, the control unit 15 of the work management apparatus 10 determines whether the work location is a target of the determination process, including the first determination process and the second determination process, based on the position information acquired by the fourth sensor 134 in step S101. If the control unit 15 determines that the work location is a target of the determination process, it executes the process of step S103. If the control unit 15 determines that the work location is not a target of the determination process, it executes the process of step S101 again.

[0063] In step S103, if the control unit 15 of the work management apparatus 10 determines in step S102 that the worker is to be subjected to the determination process, the control unit 15 acquires spatial information about the surroundings of the worker using the first sensor 131 worn by the worker.

[0064] In step S104, the control unit 15 of the work management apparatus 10 uses the second sensor 132 to obtain hooking information indicating the hooking state of the hook F of the lifeline R1 worn by the worker.

[0065] For example, when the displacement sensor 132a is in an ON state, the control unit 15 acquires, as the hooking information, a hooking state in which the hook F is not hooked on the holder H. For example, when the displacement sensor 132a is in an OFF state, the control unit 15 acquires, as the hooking information, a hooking state in which the hook F is hooked on the holder H.

[0066] For example, when the magnetic sensor 132b is in an ON state, the control unit 15 acquires, as the hooking information, the hook state in which the hook F is hooked on the holder H. For example, when the magnetic sensor 132b is in an OFF state, the control unit 15 acquires, as the hooking information, the hook state in which the hook F is not hooked on the holder H.

[0067] For example, when the rotation sensor 132c is in the on state, the control unit 15 acquires as engagement information the engagement state of the hook F on the master rope R2 or the holder H. For example, when the rotation sensor 132c is in the off state, the control unit 15 acquires as engagement information the engagement state of the hook F on both the master rope R2 and the holder H.

[0068] In step S105, the control unit 15 of the work management apparatus 10 executes a first determination process to determine whether or not the work location is one where a worker may fall, based on the spatial information acquired in step S103. If the control unit 15 determines that the work location is one where a worker may fall, it executes the process of step S106. If the control unit 15 determines that the work location is not one where a worker may fall, it executes the process of step S108.

[0069] In step S106, the control unit 15 of the work management device 10 executes a second determination process to determine whether or not the hook F is hooked on the master rope R2 based on the hooking information acquired in step S104. If the control unit 15 determines that the hook F is hooked on the master rope R2, it executes the process of step S108. If the control unit 15 determines that the hook F is not hooked on the master rope R2, it executes the process of step S107.

[0070] For example, when the control unit 15 acquires the hooking information indicating that the hook F is not hooked on the holder H because the displacement sensor 132a is in the on state, the control unit 15 determines that the hook F is hooked on the master rope R2. In other words, the control unit 15 mechanically determines that the hook F is hooked on the master rope R2 by detecting with the displacement sensor 132a that the hook F is not hooked on the holder H.

[0071] For example, when the control unit 15 acquires the hooking information indicating that the hook F is not hooked on the holder H because the magnetic sensor 132b is in the off state, the control unit 15 determines that the hook F is hooked on the master rope R2. In other words, when the magnetic sensor 132b is in the off state and no detection signal is obtained from the magnetic sensor 132b, the control unit 15 mechanically determines that the hook F is hooked on the master rope R2.

[0072] For example, in addition to or instead of the above-described indirect determination using the displacement sensor 132a or the magnetic sensor 132b, the control unit 15 can also perform a direct determination based on a combination of the displacement sensor 132a and the rotation sensor 132c. For example, when the displacement sensor 132a is in the on state, the control unit 15 acquires, as engagement information, an engagement state in which the hook F is not engaged with the holder H. When the rotation sensor 132c is in the on state, the control unit 15 acquires, as engagement information, an engagement state in which the hook F is engaged with the master rope R2 or the holder H. By combining these pieces of engagement information, the control unit 15 directly determines that the hook F is engaged with the master rope R2.

[0073] In step S107, if the control unit 15 of the work management device 10 determines in step S105 that the work location is one where there is a risk of the worker falling and determines in step S106 that the hook F is not hooked on the master rope R2, the control unit 15 outputs notification information to the worker using the output unit 14. For example, the control unit 15 may output the notification information to the worker visually, such as by an image, using the first output module 141 of the output unit 14. For example, the control unit 15 may output the notification information to the worker audibly, such as by sound, using the second output module 142 of the output unit 14.

[0074] In step S108, the control unit 15 of the work management apparatus 10 determines whether or not the operation of the work management apparatus 10 should be terminated, for example, because the worker's work at the work site has been completed. If the control unit 15 determines that the operation should be terminated, it terminates the processing. If the control unit 15 determines that the operation should be continued, it executes the processing of step S101 again.

[0075] Fig. 7 is a sequence diagram for explaining an example of a work management method executed by the work management system 1 of Fig. 1. With reference to Fig. 7, the example of the work management method executed by the work management system 1 of Fig. 1 will be mainly explained.

[0076] In step S201, the control unit 15 of the work management apparatus 10 acquires work history information according to the flowchart of Fig. 6. In the present disclosure, "history information" includes, for example, spatial information, hook information, and information on the determination results of the first determination process and the second determination process. The control unit 15 stores the acquired history information in the storage unit 12.

[0077] In step S202, the control unit 15 of the work management apparatus 10 provides the history information acquired in step S202 to the information processing apparatus 20. For example, the control unit 15 of the work management apparatus 10 transmits the history information to the information processing apparatus 20 via the communication unit 11 and the network 40. As a result, the control unit 23 of the information processing apparatus 20 acquires the history information from the work management apparatus 10. For example, the control unit 23 of the information processing apparatus 20 receives the history information from the work management apparatus 10 via the network 40 and the communication unit 21. The control unit 23 stores the acquired history information in the memory unit 22.

[0078] At this time, the control unit 23 of the information processing device 20 may also acquire attribute information of the worker from the work management device 10 or the like, associate it with the history information acquired for the same worker, and store it in the storage unit 22. The control unit 23 may build a database in the storage unit 22 in which the history information and attribute information for one worker are associated with each other. In the present disclosure, "attribute information" includes, for example, identification information such as ID (Identification), gender, age, years of work experience, and race that identifies each individual worker, the content of the work performed by the worker at the work site, location information of the work site, and time information when the history information was acquired, such as the time, season, and time period.

[0079] In step S203, the control unit 23 of the information processing device 20 monitors the work status of the worker based on the history information acquired in step S202. For example, the control unit 23 of the information processing device 20 may acquire history information in real time from the work management device 10 and monitor whether the notification information output process has been executed in step S107 of FIG. 6. When the control unit 23 of the information processing device 20 determines that the notification information output process has been executed based on the information on the determination results of each of the first determination process and the second determination process, the control unit 23 may notify the manager's terminal device 30 that the notification information output process has been executed and that the worker is in an unsafe state. This allows the manager to urge a worker who has forgotten to fasten the hook F of the lifeline R1 to the master rope R2 in an unsafe work location to fasten the hook F of the lifeline R1 to the master rope R2.

[0080] In step S204, the control unit 23 of the information processing device 20 analyzes the worker's tendency based on the history information acquired in step S202. In the present disclosure, "the worker's tendency" includes, for example, the worker's tendency to forget to fasten the hook F of the lifeline R1 to the master rope R2. The control unit 23 of the information processing device 20 may analyze the worker's tendency using any statistical method and machine learning method. For example, the control unit 23 may analyze the worker's tendency using generative AI (artificial intelligence).

[0081] In step S205, the control unit 23 of the information processing device 20 generates improvement information for the worker's work based on the analysis processing in step S204. In the present disclosure, "improvement information" includes, for example, information such as corrective advice and improvement measures to alert a worker who has a strong tendency to forget to fasten the hook F of the lifeline R1 to the master rope R2 to fasten the hook F to the master rope R2.

[0082] In step S206, the control unit 23 of the information processing device 20 provides the improvement information generated in step S205 to the terminal device 30 of the administrator. For example, the control unit 23 of the information processing device 20 transmits the improvement information to the terminal device 30 via the communication unit 21 and the network 40. As a result, the control unit 35 of the terminal device 30 acquires the improvement information from the information processing device 20. For example, the control unit 35 of the terminal device 30 receives the improvement information from the information processing device 20 via the network 40 and the communication unit 31.

[0083] In step S207, when the control unit 35 of the terminal device 30 acquires the improvement information from the information processing device 20 in step S206, the control unit 35 outputs the improvement information to the administrator using the output unit 34.

[0084] In step S208, the control unit 23 of the information processing device 20 provides the improvement information generated in step S205 to the work management device 10 worn by the worker. For example, the control unit 23 of the information processing device 20 transmits the improvement information to the work management device 10 via the communication unit 21 and the network 40. As a result, the control unit 15 of the work management device 10 acquires the improvement information from the information processing device 20. For example, the control unit 15 of the work management device 10 receives the improvement information from the information processing device 20 via the network 40 and the communication unit 11.

[0085] In step S209, when the control unit 15 of the work management apparatus 10 acquires the improvement information from the information processing device 20 in step S208, the control unit 15 outputs the improvement information to the worker using the output unit 14. For example, the control unit 15 may output the improvement information to the worker visually, such as by an image, using the first output module 141 of the output unit 14. For example, the control unit 15 may output the improvement information to the worker audibly, such as by sound, using the second output module 142 of the output unit 14.

[0086] Fig. 8 is a first schematic diagram for explaining an example of an operation executed by the work management apparatus 10 of Fig. 1. With reference to Fig. 8, an example of processing executed by the control unit 15 of the work management apparatus 10 of Fig. 1 in steps S101 and S102 of the flowchart shown in Fig. 6 will be mainly explained.

[0087] The control unit 15 of the work management device 10 determines whether the work location is subject to a determination process, including a first determination process and a second determination process, based on the position information acquired by the fourth sensor 134 of the sensor unit 13. For example, when the control unit 15 determines that the worker is at position P1 and that the work location on the lifting equipment S is lower than the height threshold T1, it determines that the work location is safe and is not subject to the determination process. On the other hand, when the control unit 15 determines that the worker is at position P2 and that the work location on the lifting equipment S is higher than the height threshold T1, it determines that the work location is not safe and is subject to the determination process. The threshold T1 includes, for example, an upper limit value for the height at which a worker can safely perform work, as determined appropriately by laws, regulations, and the like.

[0088] Fig. 9 is a second schematic diagram for explaining an example of the operation executed by the work management apparatus 10 of Fig. 1. With reference to Fig. 9, an example of the processing executed by the control unit 15 of the work management apparatus 10 of Fig. 1 in step S103 of the flowchart shown in Fig. 6 will be mainly explained. Fig. 9 shows the results of a test performed indoors to check the operation of the first sensor 131 in order to verify that spatial information is accurately acquired by the LiDAR constituting the first sensor 131 of the sensor unit 13.

[0089] For example, the control unit 15 measures the distance to objects located around the first sensor 131 using a LiDAR constituting the first sensor 131, and acquires the positions of each object relative to the first sensor 131 as point cloud data. For example, assume that the first sensor 131 is positioned on a desk and acquires point cloud data of surrounding objects by looking around the desk. In this case, the control unit 15 distinguishes, for example, an area A1 of the desk, an area A2 that is lower than the desk, and an area A3 that is higher than the desk. The control unit 15 acquires such a distribution of elevation differences as spatial information. In addition, the control unit 15 can also acquire, for example, the distance from the position of the first sensor 131 on the desk to a position where the above-mentioned distribution of elevation differences is obtained as spatial information.

[0090] The control unit 15 identifies a dangerous area A4 where the worker may fall based on the acquired elevation difference distribution. For example, if the worker approaches an area A2 that is lower than the desk in the acquired elevation difference distribution, the worker may fall from the desk. Therefore, the control unit 15 detects such an area A2 as a dangerous area A4 where the worker may fall.

[0091] Fig. 10 is a third schematic diagram for explaining an example of an operation executed by the work management apparatus 10 of Fig. 1. With reference to Fig. 10, an example of the processing executed by the control unit 15 of the work management apparatus 10 of Fig. 1 in steps S105 to S107 of the flowchart shown in Fig. 6 will be mainly explained. The control unit 15 of the work management apparatus 10 executes a first determination process for determining whether or not the work location is one where a worker may fall, based on the acquired spatial information, and a second determination process for determining whether or not the hook F is engaged with the master rope R2, based on the engagement information.

[0092] For example, when the control unit 15 identifies that the worker is at position P3 and that the work location is located at a distance from the edge E of the elevated scaffolding that is greater than threshold T2, it determines that the work location is not one where the worker could fall. Threshold T2 includes the lower limit of the distance from the edge E at which the worker can work safely, as determined appropriately by laws and regulations, for example. In this case, even if the worker has not hooked the hook F to the master rope R2, the control unit 15 determines that the risk of a fall is low and does not execute the process of outputting notification information in step S107.

[0093] For example, when the control unit 15 identifies that a worker is at position P4 and that a work location is located at a distance from the edge E of the elevated scaffolding that is shorter than threshold T2, it determines that the work location is one where there is a risk of the worker falling. However, because the worker has hook F hooked on the main rope R2, the control unit 15 determines in the second determination process that the hook F is hooked on the main rope R2. Therefore, although the work location is one where there is a risk of the worker falling, the control unit 15 determines that the risk of a fall is low because the hook F is hooked on the main rope R2, and does not execute the process of outputting notification information in step S107.

[0094] For example, when the control unit 15 identifies that the worker is at position P5 and that the work location is located at a distance from the edge E of the elevated scaffolding that is shorter than threshold T2, it determines that this is a work location where there is a risk of the worker falling. In addition, because the worker has not hooked the hook F to the main rope R2, the control unit 15 determines in the second determination process that the hook F is not hooked to the main rope R2. Therefore, since the worker has forgotten to hook the hook F to the main rope R2 in a work location where there is a risk of the worker falling, the control unit 15 determines that there is a high risk of the worker falling, and executes the output process of notification information in step S107.

[0095] Fig. 11 is a fourth schematic diagram for explaining an example of an operation executed by the work management apparatus 10 of Fig. 1. With reference to Fig. 11, an example of the processing executed by the control unit 15 of the work management apparatus 10 of Fig. 1 in step S107 of the flowchart shown in Fig. 6 will be mainly explained. When the control unit 15 of the work management apparatus 10 determines that a work location is one where there is a risk of a worker falling and that the hook F is not engaged with the master rope R2, it outputs notification information to the worker using the output unit 14. Fig. 11 shows examples of screens displayed by the first output module 141 as a result of output processing by the control unit 15, for each condition.

[0096] Condition 1 is a condition when the control unit 15 determines in the first determination process that the work location is not one where there is a risk of the worker falling (rider safe) and determines in the second determination process that the hook F is engaged with the master rope R2 (hook in use). In this case, the control unit 15 does not warn the worker based on the notification information, but simply notifies the worker via the output unit 14 that the "status" is safe.

[0097] Condition 2 is a condition when the control unit 15 determines in the first determination process that the work location is not one where there is a risk of the worker falling (rider safe) and determines in the second determination process that the hook F is not engaged with the master rope R2 (hook unused). In this case as well, the control unit 15 does not warn the worker based on the notification information, but simply notifies the worker via the output unit 14 that the "status" is safe.

[0098] Condition 3 is a condition when the control unit 15 determines in the first determination process that the work location is one where there is a risk of the worker falling (rider danger) and determines in the second determination process that the hook F is hooked to the master rope R2 (hook in use). In this case too, the control unit 15 does not warn the worker based on the notification information, but simply notifies the worker via the output unit 14 that the "condition" is safe.

[0099] Condition 4 is a condition when the control unit 15 determines in the first determination process that the work location is one where there is a risk of the worker falling (rider danger) and determines in the second determination process that the hook F is not engaged with the master rope R2 (hook unused). In this case, the control unit 15 warns the worker that the "condition" is dangerous based on the notification information.

[0100] According to the above-described embodiment, worker safety can be improved. When the work management device 10 executes the first and second determination processes and determines that a work location is one where a worker may fall and that the hook F is not attached to the main rope R2, it outputs notification information to the worker using the output unit 14. This allows the work management device 10 to prompt the worker to attach the hook F to the main rope R2 on behalf of the supervisor, even when a manager such as a work supervisor is absent or the worker is out of the supervisor's sight. The work management device 10 can perform real-time worker safety management even when the worker moves frequently during work and the safety situation changes from moment to moment. The work management device 10 can more accurately determine whether a work location is one where a worker may fall from the worker's perspective and update the determination process in real time. As a result, worker safety is improved.

[0101] The sensor unit 13 further includes a third sensor 133 that acquires posture information of the worker wearing the first sensor 131. This allows the work management device 10 to acquire the collimation direction of the first sensor 131. Therefore, the work management device 10 can acquire spatial information about the worker's surroundings with greater accuracy by performing correction processing or the like based on the collimation direction of the first sensor 131 acquired by the third sensor 133. For example, the work management device 10 can acquire spatial information from the first sensor 131 only when the worker is in the correct posture and the third sensor 133 detects scaffolding at the work site.

[0102] The sensor unit 13 is attached to the first sensor 131 and further has a gimbal structure 135 that maintains the collimation direction of the first sensor 131 toward the scaffolding of the work site. This allows the work management device 10 to maintain the collimation direction of the first sensor 131 in a desired direction using the gimbal structure 135, even if the worker wearing the first sensor 131 assumes various postures. Therefore, the work management device 10 can acquire spatial information about the worker's surroundings with higher accuracy.

[0103] The second sensor 132 is attached to a holder H worn by the worker and includes a displacement sensor 132a that detects that the hook F is not engaged with the holder H. This allows the work management device 10 to mechanically determine that a hook F that is not engaged with the holder H is engaged with the master rope R2. The work management device 10 can also indirectly perform the second determination process with a simpler configuration using a single sensor, without using a more complex configuration such as a combination of the displacement sensor 132a and the rotation sensor 132c.

[0104] The second sensor 132 is attached to the hook F and includes a magnetic sensor 132b that detects whether the hook F is hooked on the holder H worn by the worker. This allows the work management device 10 to mechanically determine that the hook F that is not hooked on the holder H is hooked on the master rope R2 when the magnetic sensor 132b does not react. The work management device 10 can also indirectly perform the second determination process with a simpler configuration using a single sensor, without using a more complex configuration such as a combination of the magnetic sensor 132b and the rotation sensor 132c.

[0105] The second sensor 132 is attached to the hook F and includes a rotation sensor 132c that detects the rotational movement of the hooking portion F1 of the hook F. This allows the work management apparatus 10 to accurately determine whether the hook F is hooked on an object such as the holder H or the master rope R2, depending on the rotation state of the rotation sensor 132c. In addition, by using at least one of the displacement sensor 132a and the magnetic sensor 132b described above in conjunction with the rotation sensor 132c, the work management apparatus 10 can accurately determine whether the hook F is hooked on the master rope R2, excluding cases where the hook F is hooked on the holder H. The work management apparatus 10 can also directly perform the second determination process using multiple sensors including the rotation sensor 132c.

[0106] The work management device 10 determines whether the work location is subject to a determination process including the first determination process and the second determination process based on the position information acquired by the fourth sensor 134. This allows the work management device 10 to turn off the operation of the device itself and suppress unnecessary notification information output processing when the worker is in a safe work location, for example, on the ground rather than at high altitude. By refraining from unnecessary output processing, the work management device 10 can prevent the worker from becoming accustomed to notification information as a warning.

[0107] The work management system 1 has an information processing device 20 that acquires work history information from the work management device 10. This allows the work management system 1 to remotely monitor, manage, and analyze the history information of at least one worker from the work management device 10.

[0108] The information processing device 20 analyzes the worker's tendencies based on the history information and generates improvement information for the worker's work. This allows the work management system 1 to accurately analyze, for example, whether the worker is likely to forget to fasten the hook F of the lifeline R1 to the master rope R2, and appropriately generate improvement information.

[0109] The terminal device 30 outputs the improvement information to the manager. This allows the work management system 1 to prompt the manager to take improvement measures, such as issuing a corrective recommendation and safety training to a worker who has a tendency to forget to fasten the hook F of the lifeline R1 to the main rope R2, so that the worker can fasten the hook F to the main rope R2. The manager can also collectively manage at least one worker who is remotely located, and can take appropriate action for that worker from a remote location.

[0110] Although the present disclosure has been described based on the drawings and examples, it should be noted that those skilled in the art can make various modifications and alterations based on the present disclosure. Therefore, it should be noted that these modifications and alterations are included in the scope of the present disclosure. For example, the functions included in each configuration or step can be rearranged so as not to be logically inconsistent, and multiple configurations or steps can be combined or divided into one.

[0111] For example, a general-purpose electronic device such as a smartphone or computer can be configured to function as the work management device 10 according to the embodiment described above. Specifically, a program describing the processing content for realizing each function of the work management device 10 according to the embodiment is stored in the memory of the electronic device, and the program is read and executed by a processor of the electronic device. Therefore, the present disclosure can also be realized as a program executable by a processor.

[0112] Alternatively, the present disclosure may be realized as a non-transitory computer-readable medium storing a program executable by one or more processors to cause the work management device 10 according to one embodiment to execute each function, etc. It should be understood that these are also encompassed within the scope of the present disclosure.

[0113] For example, at least a part of the processing operations executed in the work management apparatus 10 in the above-described embodiment may be executed in at least one of the information processing apparatus 20 and the terminal apparatus 30. For example, instead of the control unit 15 of the work management apparatus 10, the control unit 23 of the information processing apparatus 20 may execute the above-described series of processing operations related to the work management apparatus 10. At least a part of the processing operations executed in each of the information processing apparatus 20 and the terminal apparatus 30 may be executed in the work management apparatus 10.

[0114] In the above embodiment, the sensor unit 13 is described as further including the third sensor 133 that acquires posture information of the worker wearing the first sensor 131, but is not limited to this. The sensor unit 13 does not necessarily have to include the third sensor 133.

[0115] In the above embodiment, the sensor unit 13 is described as being attached to the first sensor 131 and further including the gimbal structure 135 that maintains the collimation direction of the first sensor 131 toward the scaffolding of the work location, but is not limited to this. The sensor unit 13 does not necessarily have to include the gimbal structure 135.

[0116] In the above embodiment, the second sensor 132 may include at least one of the displacement sensor 132a, the magnetic sensor 132b, and the rotation sensor 132c. However, instead of or in addition to these sensors, the second sensor 132 may include any other sensor capable of acquiring hooking information indicating the hooking state of the hook F of the lifeline R1 worn by the worker.

[0117] In the above embodiment, the sensor unit 13 is described as further including the fourth sensor 134 that acquires location information of the work location, but this is not limited to this. The sensor unit 13 does not have to include the fourth sensor 134. Accordingly, the work management apparatus 10 does not have to execute the process of determining, based on the location information, whether or not the work location is subject to the determination process, including the first determination process and the second determination process.

[0118] In the above embodiment, the work management system 1 has been described as including the work management device 10, the information processing device 20, and the terminal device 30, but is not limited to this. The work management system 1 may include only the work management device 10. In other words, the work management device 10 does not need to be configured to cooperate with other devices as part of the system, and may, for example, operate independently locally without being communicatively connected to the network 40. The work management system 1 may include only either the information processing device 20 or the terminal device 30 in addition to the work management device 10.

[0119] In the above embodiment, the information processing device 20 is described as providing improvement information to both the work management device 10 worn by the worker and the terminal device 30 used by the manager, but this is not limited to this. The information processing device 20 may provide improvement information to only one of the work management device 10 worn by the worker and the terminal device 30 used by the manager.

[0120] In addition to the processing content of the above embodiment, the control unit 15 of the work management device 10 may generate a 3D map of the work location as information based on history information acquired for at least one worker. In this case, the work management system 1 may additionally include a mobile object such as a UAV (Unmanned Aerial Vehicle) or an AGV (Automatic Guided Vehicle), and may use the mobile object to generate a similar 3D map as information. In this case, the mobile object may generate the 3D map as information based on SLAM (Simultaneous Localization and Mapping).

[0121] For example, the mobile object may generate a 3D map as information in advance before the worker wearing the work management device 10 heads to the work site. This allows the work management device 10 to use the 3D map generated by the mobile object as advance information, and it is also possible to determine in advance whether the work site is one where the worker may fall based on the advance information. Therefore, by additionally using the advance information in addition to the worker's position information from the fourth sensor 134 and the spatial information from the first sensor 131, the work management device 10 can execute the first determination process with higher accuracy.

[0122] Some embodiments of the present disclosure will be described below as examples, however, it should be noted that the embodiments of the present disclosure are not limited to these examples. [Appendix 1] a sensor unit including a first sensor worn by a worker to acquire spatial information about the worker's surroundings, and a second sensor to acquire hooking information indicating a hooking state of a hook of a lifeline worn by the worker; a control unit that executes a first determination process that determines whether or not the work location is one where the worker may fall, based on the spatial information, and a second determination process that determines whether or not the hook is engaged with an engagement target, based on the engagement information; an output unit that outputs notification information from the control unit to the worker when the control unit determines that the work location is a work location where there is a possibility of the worker falling and that the hook is not engaged with the engaging object; Equipped with Work management device. [Appendix 2] 10. The work management device according to claim 1, The sensor unit further includes a third sensor that acquires posture information of the worker wearing the first sensor. Work management device. [Appendix 3] 3. The work management device according to claim 1, The sensor unit further includes a gimbal structure attached to a first sensor and configured to maintain the collimation direction of the first sensor toward a scaffold at the work location. Work management device. [Appendix 4] 4. The work management device according to claim 1, The second sensor includes a displacement sensor attached to a holder worn by the worker and detecting that the hook is not engaged with the holder. Work management device. [Appendix 5] 5. The work management device according to claim 1, The second sensor includes a magnetic sensor attached to the hook and detecting that the hook is hooked on a holder worn by the worker. Work management device. [Appendix 6] 6. The work management device according to any one of appendices 1 to 5, The second sensor includes a rotation sensor attached to the hook and configured to detect rotational movement of the hook portion of the hook. Work management device. [Appendix 7] 7. The work management device according to claim 1, the sensor unit further includes a fourth sensor that acquires position information of the work place, the control unit determines whether the work location is a target of a determination process including the first determination process and the second determination process, based on the position information acquired by the fourth sensor. Work management device. [Appendix 8] A work management device according to any one of Supplementary Notes 1 to 7; an information processing device that acquires the spatial information, the hanging information, and information on the determination results of the first determination process and the second determination process from the work management device as work history information; Equipped with Work management system. [Appendix 9] 9. The work management system according to claim 8, the information processing device analyzes the tendency of the worker based on the history information and generates improvement information for the work of the worker. Work management system. [Appendix 10] 10. The work management system according to claim 9, a terminal device of a manager who manages the workers, the terminal device acquiring the improvement information from the information processing device; the terminal device outputs the improvement information to the manager. Work management system. [Appendix 11] using a first sensor worn by a worker to acquire spatial information about the surroundings of the worker, and executing a first determination process to determine whether or not the work location is one where there is a risk of the worker falling, based on the spatial information; using a second sensor that acquires hooking information indicating a hooking state of a hook of a lifeline worn by the worker, and executing a second determination process that determines whether the hook is hooked on a hooking target based on the hooking information; When it is determined that the work location is a location where there is a possibility that the worker may fall and that the hook is not engaged with the engagement target, outputting notification information to the worker; Including, Work management methods. [Explanation of symbols]

[0123] 1 Work management system 10 Work management device 11 Communications Department 12 Storage section 13 Sensor section 131 First Sensor 132 Second Sensor 132a Displacement sensor 132b Magnetic Sensor 132c Rotation Sensor 133 Third Sensor 134 4th Sensor 135 Gimbal Structure 14 Output section 141 First Output Module 142 Second Output Module 15 Control Unit 20 Information processing equipment 21 Communications Department 22 Memory section 23 Control Unit 30 Terminal Equipment 31 Communications Department 32 Storage section 33 Input section 34 Output section 35 Control Unit 40 Network A Fall arrest equipment A1, A2, A3 area A4 Dangerous areas E Edge F hook F1 latch part H holder P1, P2, P3, P4, P5 position R1 Lifeline R2 life rope (hooking target) S Elevating equipment T1, T2 thresholds

Claims

1. a sensor unit including a first sensor worn by a worker to acquire spatial information about the surroundings of the worker, and a second sensor to acquire hooking information indicating a hooking state of a hook of a lifeline worn by the worker; a control unit that executes a first determination process that determines whether or not the work location is one where the worker may fall, based on the spatial information, and a second determination process that determines whether or not the hook is engaged with an engagement target, based on the engagement information; an output unit that outputs notification information from the control unit to the worker when the control unit determines that the work location is a location where there is a risk of the worker falling and that the hook is not engaged with the engagement target; Equipped with Work management device.

2. The work management device according to claim 1, The sensor unit further includes a third sensor that acquires posture information of the worker wearing the first sensor. Work management device.

3. The work management device according to claim 1 or 2, The sensor unit further includes a gimbal structure attached to a first sensor and configured to maintain a collimation direction of the first sensor toward a scaffold at the work location. Work management device.

4. The work management device according to claim 1 or 2, the second sensor is attached to a holder worn by the worker and includes a displacement sensor that detects that the hook is not engaged with the holder. Work management device.

5. The work management device according to claim 1 or 2, the second sensor includes a magnetic sensor attached to the hook and configured to detect that the hook is hooked onto a holder worn by the worker. Work management device.

6. The work management device according to claim 1 or 2, the second sensor includes a rotation sensor attached to the hook and configured to detect rotational movement of the hook portion of the hook. Work management device.

7. The work management device according to claim 1 or 2, the sensor unit further includes a fourth sensor that acquires position information of the work place, the control unit determines whether the work location is a target of a determination process including the first determination process and the second determination process, based on the position information acquired by the fourth sensor. Work management device.

8. The work management device according to claim 1 or 2; an information processing device that acquires the spatial information, the hanging information, and information on the determination results of the first determination process and the second determination process from the work management device as work history information; Equipped with Work management system.

9. The work management system according to claim 8, the information processing device analyzes the tendency of the worker based on the history information and generates improvement information for the work of the worker. Work management system.

10. The work management system according to claim 9, a terminal device of a manager who manages the workers, the terminal device acquiring the improvement information from the information processing device; the terminal device outputs the improvement information to the manager. Work management system.

11. executing a first determination process using a first sensor worn by a worker to acquire spatial information around the worker, and determining whether or not the work location is one where there is a risk of the worker falling, based on the spatial information; using a second sensor that acquires hooking information indicating a hooking state of a hook of a lifeline worn by the worker, and executing a second determination process that determines whether the hook is hooked on a hooking target based on the hooking information; When it is determined that the work location is a location where there is a possibility that the worker may fall and that the hook is not engaged with the engagement target, outputting notification information to the worker; Including, Work management methods.

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