Working environment monitoring system and monitoring method of working environment monitoring system

Abstract

To aim at improving a working environment effectively by quickly exhibiting attention calling for the working environment to a worker and evaluating the amenity of the working environment.SOLUTION: A working environment monitoring system comprises a helmet 10 provided with a display device capable of exhibiting an image photographed by a camera 15 to photograph the rear of a worker H, working clothes 20, a management device 14 provided at the helmet 10 and / or the working clothes 20, obtaining data for a working environment of the worker H, and executing exhibiting control of the display device, and an outside control device 80 capable of communicating with the management device 14. The outside control device 80 can detect generation of a risk factor on the basis of the data for the working environment, and when detecting the generation of the risk factor, exhibits alarming information to the display device through the management device 14.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a work environment monitoring system and a monitoring method for the work environment monitoring system. [Background technology]

[0002] Generally, at tunnel construction sites, the working environment inside the tunnel is improved by operating ventilation fans and dust collectors according to the amount of dust at the tunnel face. In this case, the working environment is improved by increasing the amount of air supplied or installing more fans. Meanwhile, known technologies for protecting workers engaged in construction work inside tunnels are disclosed in Patent Documents 1 and 2. Patent Document 1 relates to a helmet equipped with a camera that takes pictures behind the worker, and a display that displays images taken by the camera is provided inside the visor. Patent Document 2 relates to a work suit and helmet, which includes a temperature control means for adjusting the temperature inside the body suit, a biometric information measuring means for measuring the worker's biometric information, and a transmitting / receiving means for transmitting information from the biometric information measuring means, camera images, and the worker's voice to the outside, as well as for conveying instructions from the outside to the worker. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-119889 [Patent Document 2] Japanese Patent Application Publication No. 2018-145537 Summary of the Invention [Problem to be solved by the invention]

[0004] The helmet in Patent Document 1 allows the driver to check behind the vehicle by visually checking the display. However, it only has the function of identifying vehicles from behind based on the presence or absence of light, and there are issues with its usability, such as the display blocking the field of view and interfering with the face. The work suit and helmet in Patent Document 2 can transmit work reports, understanding, instructions, etc. using a transmitting / receiving means, and can also grasp and safely manage health conditions. However, there is a problem in that the targets for improvement in health conditions are unclear, and it is not possible to effectively improve the work environment. The present invention aims to solve the above-mentioned problems and propose a work environment monitoring system and a monitoring method for a work environment monitoring system that can quickly provide workers with warnings about the work environment and effectively improve the work environment by evaluating the comfort of the work environment. [Means for solving the problem]

[0005] The present invention provides a work environment monitoring system for solving the above problems, which includes a helmet equipped with a camera for capturing images behind the worker and a display device capable of displaying images captured by the camera, work clothes worn by the worker, a management device provided on the helmet and / or the work clothes for acquiring data related to the worker's work environment and controlling the display of the display device, and an external control device capable of communicating with the management device. The external control device is capable of detecting the occurrence of a risk factor based on the data related to the worker's work environment acquired by the management device, and when the occurrence of the risk factor is detected, causes the display device to display warning information via the management device.

[0006] In the present invention, data regarding the worker's working environment can be obtained directly from the helmet or work clothes, and the necessary information can be displayed on a display device, allowing for prompt alerts regarding the working environment to be presented to the worker. Furthermore, the comfort of the working environment, which was previously evaluated using subjective indicators, can now be evaluated using quantitative indicators from an external control device, making it possible to clearly identify areas for improvement and effectively improve the working environment. Furthermore, since the environment for each work location can be grasped based on the data regarding the working environment, this information can be appropriately reflected in environmental improvements for each task and each work location. This is more efficient and effective than improving the environment of the entire workplace.

[0007] In the work environment monitoring system, it is preferable that the helmet and / or the work clothes further include a sensor for acquiring data relating to the worker's vital signs. This configuration allows for prompt presentation of vital signs data to workers in addition to alerting them to the working environment. In this case, the external control device can also provide quantitative indicators to assess the worker's health, allowing for effective alerts to workers.

[0008] The working environment monitoring system includes a ventilation system for ventilating the tunnel. The external control device is preferably capable of detecting the occurrence of a risk factor based on at least one of data related to the worker's working environment and measurements by the sensor. When the occurrence of the risk factor is detected, it is preferable to control the operation of the ventilation system to adjust the ventilation volume and / or wind direction. This configuration allows for quick and effective environmental improvements at each work location.

[0009] The working environment monitoring system is equipped with lighting equipment capable of adjusting the illuminance of lighting inside the tunnel. The external control device is preferably capable of detecting the occurrence of a risk factor based on at least one of data related to the worker's working environment and measurements by the sensor. When the occurrence of the risk factor is detected, it is preferable to adjust the illuminance and / or direction of the lighting of the lighting equipment. This configuration allows for quick and effective environmental improvements at each work location, and also effectively alerts workers.

[0010] The helmet is equipped with a headlight with adjustable light source output. The external control device is preferably capable of detecting the occurrence of a risk factor based on at least one of data related to the worker's working environment and measurements by the sensor. When the occurrence of the risk factor is detected, the external control device preferably adjusts the output of the light source so that the illuminance of the headlight is increased. This configuration allows for quick and effective environmental improvements at each work location. In addition, the increased illumination provided by the headlights effectively alerts workers.

[0011] The external control device is preferably capable of detecting the occurrence of a risk factor based on at least one of data on the working environment of the worker and the measurement values ​​by the sensor, and is provided with information storage means for storing the data on the working environment of the worker, the measurement values ​​by the sensor, and information on the occurrence of a risk factor. In this case, it is preferable that the information stored in the information storage means can be distributed to an external terminal. This configuration allows workers to share data about their work environment, their vital signs, and information about the occurrence of risk factors among themselves and with external workers, making it easy to understand the environment for each work location and, ultimately, the environment of the entire work area, thereby enabling accurate environmental improvements.

[0012] The working environment monitoring system in the monitoring method for a working environment monitoring system of the present invention for solving the above-mentioned problems comprises a helmet equipped with a camera for capturing an image behind a worker and a display device capable of displaying an image captured by the camera, work clothes worn by the worker, a management device provided on the helmet and / or the work clothes for acquiring data related to the worker's working environment and controlling the display of the display device, and an external control device capable of communicating with the management device.The monitoring method for the working environment monitoring system includes an acquisition step for acquiring data related to the worker's working environment, a display step for displaying the data related to the worker's working environment acquired in the acquisition step on the display device, a transmission step for transmitting the data related to the worker's working environment acquired in the acquisition step to the external control device, a detection step for detecting the occurrence of a risk factor based on the data related to the worker's working environment transmitted in the transmission step, and an alarm information display step for displaying alarm information on the display device via the management device when the occurrence of a risk factor is detected in the detection step.

[0013] In the present invention, data regarding the worker's working environment can be obtained directly from the helmet or work clothes, and the necessary information can be displayed on a display device, so that workers can be promptly alerted about the working environment. Furthermore, the comfort of the working environment, which was previously evaluated using subjective indicators, can now be evaluated using quantitative indicators from an external control device, making it possible to clearly identify areas for improvement and effectively improve the working environment. Furthermore, since the environment for each work location can be grasped based on the data regarding the working environment, this information can be appropriately reflected in environmental improvements for each task and each work location. This is more efficient and effective than improving the environment of the entire workplace. [Effects of the Invention]

[0014] According to the work environment monitoring system and the monitoring method for the work environment monitoring system of the present invention, it is possible to quickly provide workers with warnings about the work environment, and to effectively improve the work environment by evaluating the comfort of the work environment. [Brief explanation of the drawings]

[0015] [Figure 1] 1 is a perspective view showing a helmet applied to a work environment monitoring system and a monitoring method for a work environment monitoring system according to an embodiment of the present invention. [Figure 2] FIG. 10 is a perspective view showing a worker wearing a helmet and work clothes. [Figure 3] FIG. 2 is a block diagram showing the configuration of a management device. [Figure 4] FIG. 10 is a perspective view showing another form of the helmet. [Figure 5] FIG. 1 is a schematic diagram showing the state inside a tunnel to which the working environment monitoring system and the monitoring method of the working environment monitoring system are applied. [Figure 6] FIG. 2 is a block diagram showing the configuration of the external control device. [Figure 7] 1 is a table showing criteria for determining the occurrence of risk factors and thresholds that serve as measurement criteria for the criteria. [Figure 8] 1 is a flowchart showing an example of a monitoring method executed by the work environment monitoring system according to the embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0016] The working environment monitoring system and monitoring method of the working environment monitoring system of the present invention will be described in detail below with reference to the drawings as appropriate. The working environment monitoring system and monitoring method of the working environment monitoring system of the present invention are effective techniques for improving the working environment at tunnel construction sites. Of course, the present invention can also be applied to sites other than tunnel construction sites where working environments are to be improved.

[0017] Fig. 1 is a perspective view showing a helmet applied to a working environment monitoring system and a monitoring method for the working environment monitoring system according to an embodiment, and Fig. 2 is a perspective view showing a worker wearing the helmet and work clothes. As shown in Figs. 1 and 2, the working environment monitoring system includes a helmet 10, work clothes 20 (see Fig. 2), a management device 14 (see Fig. 2), and an external control device 80. As shown in Fig. 1, the helmet 10 is a protective gear that protects the head of a worker working at a tunnel construction site. In Fig. 1, the forward, backward, left, right, upward, and downward directions as seen from the worker's perspective are indicated by the letters front, rear, left, right, upward, and downward, respectively. The helmet 10 is a full-face type that covers the entire head of the worker H (see Fig. 2, the same applies below), and has a function of supplying air from which dust has been removed by a filter (not shown) into the helmet 10. The helmet 10 may also be configured to have an electrically driven air purifying device (PAPR: Powered Air Purifying Respirators).

[0018] The helmet 10 includes a protective cap 11 that protects the top of the head of the worker H, and a transparent visor 12 that protects the face of the worker H. The protective cap 11 has a structure in which a liner (not shown) made of expanded polystyrene or the like is provided inside the shell (cap body) that constitutes the outer shell, as a shock-absorbing buffer. The protective cap 11 is integrally provided with a frame portion 11a that extends downward from the front portion. The visors 12 are positioned on both the left and right sides of the front of the worker's face and are made of a transparent material so that the worker can see ahead. The upper part of the visor 12 is attached to the front part of the protective cap 11. The left and right sides and the lower part of the visor 12 are attached to a frame part 11a provided on the protective cap 11.

[0019] The protective cap 11 includes a display unit 13a constituting a display device, and a management device 14 capable of providing display information to the display unit 13a. The protective cap 11 also includes a camera 15, a headlight 16, and earmuffs 17. The display unit 13a is supported on the inside of the front end of the protective cap 11 and is disposed on the inside of the upper portion of the visor 12. The display unit 13a has a substantially horizontally elongated rectangular shape. However, the shape of the display unit 13a is not limited to a substantially horizontally elongated rectangular shape, and any other suitable shape may be adopted. The display unit 13a is, for example, a transparent display using a film liquid crystal, and is capable of displaying display information including image (video) information. The display unit 13a acquires display information data from a display information control unit 14a (described later) of the management device 14. The display information displayed on the display unit 13a is viewed by a worker H (see FIG. 2) wearing a helmet 10. Display information other than image (video) information includes data related to the work environment of the worker H inside the tunnel T1 (see FIG. 5) and data related to the worker H's vital signs. Examples of data related to the work environment include temperature, humidity, gas concentration, noise level, and illuminance. Examples of data related to the worker H's vital signs include body temperature, pulse rate, and amount of exercise (cumulative amount of exercise).

[0020] The camera 15 is attached to the rear end of the protective cap 11 and captures an image of the area behind the worker H. The headlight 16 is provided at the front of the protective helmet 11 and incorporates a light source unit that uses a light-emitting element such as an LED as a light source. The earmuffs 17 are attached to both the left and right sides of the protective helmet 11 via support members 17a. The earmuffs 17 have wireless communication, speaker, and noise-canceling functions. Using the wireless communication function, the earmuffs 17 can share audio input into a microphone 11c provided inside the visor 12 with the tunnel construction manager and other construction workers via the earmuffs 17 of other workers H or the external control device 80.

[0021] The management device 14 is equipped with a display information control unit 14a (see FIG. 3) that controls the display of the display unit 13a. The management device 14 is provided inside the protective helmet 11. The installation location of the management device 14 is not limited, and it may be provided outside the outer shell of the protective helmet 11 or in another location, or it may be configured to be attached to the work clothes 20. The management device 14 is driven by power from a power supply unit (not shown). The power supply unit may be provided integrally with the management device 14, or may be configured separately and attached to the protective helmet 11 or the work clothes 20.

[0022] Fig. 3 is a block diagram showing the configuration of the management device 14. As shown in Fig. 3, the management device 14 includes a display information control unit 14a, a transmission / reception unit 14b, a camera control unit 14c, and a headlight control unit 14d. The management device 14 also includes an identification ID for identifying the worker H. The display information control unit 14a outputs display information to the display unit 13a. Specifically, data related to the work environment of the worker H and data related to the vital signs of the worker H, which are acquired via the transmission / reception unit 14b, are output to the display unit 13a via the cable 13c. Furthermore, the display information control unit 14a outputs to the display unit 13a, when it acquires from the external control device 80 via the transmission / reception unit 14b, images acquired from the camera control unit 14c, alarm information (described below), and alarm information based on the acquired data. Note that the type of display information to be displayed on the display unit 13a, the display layout, and the display position and brightness can be set using an adjuster, terminal, or the like (not shown) that can control the display information control unit 14a.

[0023] The transmitter / receiver 14b communicates with the environment measuring device 18 (see FIG. 2 ; the same applies below) and the vital sensor 19 (sensor; see FIG. 2 ; the same applies below) using a wireless communication line (e.g., Bluetooth (registered trademark) or the like) and outputs information acquired from these to the display information control unit 14a. The transmitter / receiver 14b also communicates with the external control device 80 via a communication relay device 30 (repeaters 31-34) using a wireless communication line (e.g., Wi-Fi (registered trademark) or the like) and exchanges information acquired from the environment measuring device 18 and the vital sensor 19. As shown in FIG. 2 , the environment measuring device 18 is attached to, for example, the belt of the work clothes 20 and measures the various pieces of information related to the work environment of the worker H. The vital sensor 19 is attached to, for example, the wrist, forehead, etc. of the worker H and measures the various pieces of information related to the worker H's vital signs.

[0024] The camera control unit 14c controls the camera 15 to be turned on and off, and outputs the image acquired from the camera 15 to the display information control unit 14a. The camera control unit 14c also detects whether or not there is a construction vehicle approaching from behind the worker H, based on the image acquired from the camera 15. In detecting this, the camera control unit 14c can, for example, recognize the light of the approaching headlights of a construction vehicle from the image and determine whether or not there is a construction vehicle approaching the worker H. When the camera control unit 14c determines that there is a construction vehicle approaching the worker H, it outputs approach warning information to the display information control unit 14a.

[0025] The headlight control unit 14d has a function of adjusting the output of the light source of the headlight 16. When the external control device 80 detects that the illuminance around the worker H measured by the environment measuring device 18 does not reach a preset threshold, as will be described later, or when the external control device 80 issues an alarm, as will be described later, the headlight control unit 14d adjusts the output of the light source so that the illuminance of the headlight 16 increases. In addition, the headlight control unit 14d can remotely adjust the output of the light source of the headlight 16 based on a command from the external control device 80.

[0026] Fig. 4 is a perspective view showing another embodiment of the helmet. In this embodiment, the display device is provided with a projection unit 13b that functions as a head-up display device, and a display image is projected from the projection unit 13b onto a display area 13d in the front portion of the visor 12. In this case, the display area 13d also has a substantially horizontally elongated rectangular shape. Note that the shape of the display area 13d is not limited to a substantially horizontally elongated rectangular shape, and any appropriate shape can be adopted. Furthermore, the display area 13d is not limited to being formed as a single area on the visor 12, and multiple areas may be formed on the visor 12.

[0027] The projection unit 13b is provided inside the front end of the protective helmet 11. The projection unit 13b is an information projection device that generates a display image (display information) using display light including image (video) information and projects this toward the display area 13d of the visor 12. The projection unit 13b acquires display information data from the display information control unit 14a of the management device 14. The display image projected from the projection unit 13b onto the display area 13d is visually recognized as a virtual image in the extension of the line of sight by the worker H (see FIG. 2) wearing the helmet 10.

[0028] Next, the equipment inside the tunnel T1 at the tunnel construction site and the configuration of the external control device 80 will be described with reference to FIGS. FIG. 5 is a schematic diagram showing the state inside a tunnel to which the working environment monitoring system and the monitoring method for the working environment monitoring system of this embodiment are applied. The tunnel interior T1 is equipped with a communication relay device 30, a stationary environmental measuring device 40, an outside air intake system 50, lighting equipment 60, and a dust collector 70. Rock drills, concrete sprayers, dump trucks, and other construction vehicles (not shown) are located at the tunnel face. This creates an unpleasant working environment at the tunnel face, including dust generated by drilling, drilling, and blasting rock, as well as exhaust fumes from concrete spraying and construction vehicles. Figure 5 shows three workers H (H1-H3) working inside the tunnel T1.

[0029] The communication relay device 30 includes multiple repeaters 31-34, which are installed at predetermined intervals along the tunnel axis. Each repeater 31-34 transmits and receives signals to and from the management device 14 (transmitter / receiver 14b) of each worker H (H1-H3) within its wireless communication range. Each repeater 31-34 is, for example, a wireless communication device using wireless Wi-Fi. Each repeater 31-34 can communicate with each other and with the external control device 80 via a cable. Power is supplied to each repeater 31-34 via a power cable (not shown). Information acquired from the environment measuring devices 18 (see FIG. 2) and vital sensors 19 (see FIG. 2) of the workers H1-H3 is output to the external control device 80 via each repeater 31-34, and signals (such as alarm signals) from the external control device 80 are transmitted to the workers H1-H3.

[0030] The stationary environment measuring device 40 comprises a plurality of measuring devices 41-45, which are installed at predetermined intervals in the axial direction of the tunnel. Each measuring device 41-45 acquires data relating to the work environment of the area in which it is installed. The data relating to the work environment is the same as the information acquired by the environment measuring device 18 provided to the worker H. The information acquired by the plurality of measuring devices 41-45 is output to an external control device. Note that the stationary environment measuring device 40 does not necessarily have to be provided.

[0031] The outside air intake equipment 50 constitutes a ventilation system and performs ventilation of the tunnel interior T1. The outside air intake equipment 50 includes a blower 51 and an air supply duct 52 attached to the blower 51. The blower 51 is installed on the tunnel entrance side and takes in fresh air from the entrance side. The output of the blower 51 can be varied by controlling the voltage applied to a blower motor (not shown) using an external control device 80. The air supply duct 52 extends toward the face side and sends the fresh air taken in by the blower 51 to the face side. The air supply duct 52 has an end opening that opens toward the face side and multiple lower openings 52a that open downward. Each lower opening 52a is provided with a louver (not shown) that can adjust the air direction. Each louver is driven and controlled by the external control device 80.

[0032] The lighting equipment 60 comprises a plurality of lighting fixtures 61 to 65. The lighting fixtures 61 to 65 are installed at predetermined intervals in the axial direction of the tunnel. Each of the lighting fixtures 61 to 65 has a dimming adjustment function and a direction adjustment function that allows the lighting direction to be adjusted. These functions are controlled by an external control device 80. When the power is turned on, the external control device 80 sets the direction of each of the lighting fixtures 61 to 65 to an initial position that serves as a reference direction, for example, so that they face downward.

[0033] The dust collector 70 sucks in gas containing dust and other particles from the tunnel interior T1 from the tunnel face side and discharges the gas from which the dust and other particles have been removed toward the tunnel mouth. The dust collector 70 includes a dust collector main body 71, an air intake duct 72, an air intake port 73, and an exhaust duct 74. The dust collector main body 71 includes a number of filters and a vacuum pump, etc., not shown. The output of the vacuum pump (the pressure of the intake and exhaust air) can be varied by controlling the voltage applied to the vacuum pump using an external control device 80. The air intake duct 72 extends from the dust collector main body 71 toward the tunnel face side. The air intake port 73 is provided on the tunnel face side of the dust collector main body 71. The exhaust duct 74 is provided toward the tunnel mouth side. Although the dust collector 70 is a stationary dust collector, it may also be a self-propelled dust collector 70.

[0034] FIG. 6 is a block diagram showing the external control device, and FIG. 7 is a table showing the items that serve as criteria for determining the occurrence of risk factors and the threshold values ​​that serve as the measurement criteria for those items. The external control device 80 includes a worker position detection means 81, a risk factor detection means 82, a storage means 83, an alarm issuance means 84, an equipment control means 85, and an information accumulation means 86. The worker position detection means 81 acquires position information of each worker H1-H3 and identifies the position of each worker H1-H3 inside the tunnel T1. In this case, the worker position detection means 81 is configured to acquire the identification ID of each worker H1-H3 via the repeaters 31-34, thereby identifying each worker H1-H3 and obtaining their position information. The worker position detection means 81 may also estimate the position of each worker H1-H3 based on the strength of the signal received from the management device 14.

[0035] The risk factor detection means 82 detects the occurrence of risk factors based on data on the working environment of each worker H1-H3 and data (measured values) on worker H's vital signs. The storage means 83 pre-stores data on criteria for determining the occurrence of risk factors and threshold values ​​that serve as measurement criteria. As shown in FIG. 7, these criteria include carbon dioxide concentration, underground air temperature, ventilation rate, oxygen concentration, hydrogen sulfide concentration, flammable gas concentration, dust concentration, and illuminance. Each threshold value is uniquely set in accordance with relevant laws and regulations, such as the Safety and Health Regulations, and with typical tunnel construction sites. The ventilation rate is set for each site; for example, the tunnel construction guidelines specify the required ventilation rate (ventilation rate) using a formula, and the rate is set appropriately based on the tunnel cross-sectional area, the type of work being performed, the number of underground workers, and other factors.

[0036] The risk factor detection means 82 compares each threshold data read from the storage means 83 with the acquired data on the working environment of each worker H1 to H3 and the data on worker H's vital signs, and determines whether any of the acquired data exceeds the threshold. If the risk factor detection means 82 determines that any of the acquired data exceeds the threshold, it outputs the determination result to the alarm issuance means 84, the equipment control means 85, and the information storage means 86. The risk factor detection means 82 may also have a function to classify the acquired data using predetermined classification criteria based on measured values ​​and to determine the overall comfort of the work area from the grading results. In this case, the acquired data and the grading results can be used as indicators for environmental improvement.

[0037] The alarm issuing means 84 issues an alarm to the worker H (H1 to H3) for whom a risk factor is present, based on the determination result of the risk factor detection means 82. In this case, it is possible to notify the worker H (H1 to H3) for whom a risk factor is present that a risk factor is present, even to the worker H (H1 to H3) for whom no risk factor is present. Information about the issued alarm is transmitted to the worker H (H1 to H3) via the repeaters 31 to 34, and is displayed on the display unit 13a of the worker H (H1 to H3) via the transmitter / receiver unit 14b and the display information control unit 14a.

[0038] The risk factor detection means 82 also compares the data of each threshold read from the storage means 83 with the data related to the working environment acquired from the installed environment measuring device 40 (41-45), and determines whether any of the acquired data exceeds the threshold. In this case as well, if the risk factor detection means 82 determines that any of the acquired data exceeds the threshold, it outputs the determination result to the alarm issuance means 84, the equipment control means 85, and the information storage means 86. In this case, the alarm issuance means 84 receives the determination result of the risk factor detection means 82 and issues an alarm to the workers H (H1-H3) who are located in the area where the risk factor exists. In this case as well, information about the issued alarm is transmitted to the workers H (H1-H3) via the repeaters 31-34 and displayed on the display unit 13a of the workers H (H1-H3).

[0039] The equipment control means 85 controls the outside air introduction equipment 50, the lighting equipment 60, and the dust collector 70 when the determination result of the risk factor detection means 82 is based on the work environment data. Specifically, when risk factors related to temperature, humidity, and gas concentration are present, the equipment control means 85 controls the output of the blower 51 to increase the ventilation volume. Furthermore, the equipment control means 85 controls the louvers of the predetermined lower opening 52a of the outside air introduction equipment 50 to adjust the wind direction so that outside air efficiently reaches the workers H (H1 to H3) who have risk factors. Furthermore, when a risk factor related to illuminance is present, the equipment control means 85 controls the dimming of the lighting fixtures 61 to 65 of the lighting equipment 60 that are located in the areas of the workers H (H1 to H3) who have risk factors to increase the brightness, and adjusts the direction of the lighting to increase the illuminance in the areas of the workers H (H1 to H3). Furthermore, the equipment control means 85 performs control to increase the amount of air sent from the outside air introduction equipment 50 when risk factors related to gas concentration or the like are present.

[0040] The information storage means 86 stores data on the working environment of the workers H (H1-H3), data on the vital signs of the workers H (H1-H3), and information on the occurrence of risk factors. In this case, the information storage means 86 simultaneously stores information that may be the cause of the occurrence of risk factors, such as the time when the risk factor occurred, the area in question, information on the workers H (H1-H3), and information on the operating status of the rock drill at the tunnel face and the construction vehicles inside the tunnel T1. The data and information stored in the information storage means 86 can be distributed to an external terminal and can be viewed by the tunnel construction manager and other construction workers. The information storage means 86 may also be configured to be installed on a server (not shown) on the Internet and be viewable from an external terminal.

[0041] Next, a monitoring method of the working environment monitoring system of this embodiment will be described below. Fig. 8 is a flowchart showing an example of the monitoring method executed by the working environment monitoring system according to this embodiment. The monitoring method of the work environment monitoring system includes a worker identification step ST1, an acquisition step ST2, a vital data acquisition step ST3, a display step ST4, a transmission step ST5, a detection step ST6, an alarm information display step ST7, an operation control step ST8, and a data accumulation step ST9.

[0042] As shown in FIG. 8, when the operation control process is started, in a worker identification step ST1, the worker position detection means 81 of the external control device 80 identifies the positions of the workers H1 to H3 from the identification IDs of the workers H1 to H3. In the acquisition step ST2, the transmitter / receiver 14b of the management device 14 of each of the workers H1 to H3 acquires data relating to the work environment of each of the workers H1 to H3 from the environment measuring device 18, respectively. In the vital data acquisition step ST3, the transmitter / receiver 14b of the management device 14 of each of the workers H1 to H3 acquires data (measured values) relating to the vital signs of each of the workers H1 to H3 from the vital sensors 19, respectively.

[0043] In display step ST4, the display information control unit 14a of the management device 14 for each of the workers H1 to H3 outputs the data related to the work environment and the data related to vital signs acquired by the transceiver unit 14b to the display information control unit 14a. The display unit 13a for each of the workers H1 to H3 displays the data acquired from the display information control unit 14a. Meanwhile, the display unit 13a acquires and displays the video captured by the camera 15 from the display information control unit 14a via the camera control unit 14c. In this case, when the display information control unit 14a acquires approach warning information from the camera control unit 14c, it outputs this to the display unit 13a. In this way, various data are displayed on the display unit 13a for each of the workers H1 to H3, and the video captured by the camera 15 and the approach warning information are also displayed.

[0044] In a sending step ST5, the transmitting / receiving unit 14b sends the acquired data on the working environment and data on vital signs to the external control device 80 via the repeaters 31-34. In detection step ST6, the risk factor detection means 82 of the external control device 80 compares the acquired data related to the work environment and data related to vital signs with the threshold data read from the storage means 83 to determine whether or not a risk factor is present. If it is determined in detection step ST6 that a risk factor is present (Yes), the determination result is output to the alarm issuing means 84, the equipment control means 85, and the information storage means 86. The process proceeds to alarm information display step ST7. If it is determined in detection step ST6 that a risk factor is not present (No), the process returns to the worker identification step ST1, and the following acquisition step ST2 to detection step ST6 are repeated.

[0045] In the alarm information display step ST7, the alarm issuing means 84 receives the determination result of the risk factor detection means 82 and issues an alarm to the worker H (H1 to H3) for whom a risk factor exists. The issued alarm is received by the worker H (H1 to H3) for whom a risk factor exists via the repeaters 31 to 34 and is displayed on the display unit 13a, and the headlight control unit 14d adjusts the output of the light source of the headlight 16 to increase the illuminance. This allows the worker H (H1 to H3) to visually recognize the presence of a risk factor.

[0046] In operation control step ST8, if the judgment result of the risk factor detection means 82 is based on data on the work environment, the equipment control means 85 controls the outside air introduction equipment 50, lighting equipment 60, and dust collector 70 to improve the work environment. In the data storage step ST9, the information storage means 86 stores data on the working environment of the workers H (H1 to H3), data on the vital signs of the workers H (H1 to H3), and information on the occurrence of risk factors.

[0047] According to the working environment monitoring system and monitoring method for the working environment monitoring system of this embodiment described above, data regarding the working environment of the worker H (H1-H3) can be directly acquired from the environmental measuring device 18 attached to the helmet 10 or workwear 20, and the necessary information can be displayed on the display unit 13a as a display device, thereby quickly alerting the worker H (H1-H3) regarding the working environment. Furthermore, the comfort of the working environment, which was previously evaluated using subjective indicators, can now be evaluated using quantitative indicators from the external control device 80, making it possible to clearly identify areas for improvement and effectively improve the working environment. Furthermore, since the environment for each work location can be pinpointed based on the working environment data, the results can be appropriately reflected in environmental improvements for each task and each work location. This is more efficient and effective than improving the environment of the entire workplace.

[0048] Furthermore, the vital sensor 19 can promptly present data on vital signs to the workers H (H1 to H3) in addition to alerting them to the work environment. In this case, too, the external control device 80 can use quantitative indicators to evaluate the health of the workers H (H1 to H3), so that the workers H (H1 to H3) can be effectively alerted.

[0049] Furthermore, if the occurrence of a risk factor is detected, the operation of the ventilation equipment is controlled to adjust the ventilation volume and wind direction, and similarly the illuminance and direction of the lighting equipment are adjusted, allowing for quick and effective environmental improvements at each work location. Furthermore, when the occurrence of a risk factor is detected, the illumination intensity of the headlights 16 is increased, so that the environment at each work location can be improved quickly and effectively. Also, the workers H (H1 to H3) can be effectively alerted.

[0050] Furthermore, since the information stored in the information storage means 86 can be distributed to external terminals, data on the work environment of the workers H (H1 to H3) and data on the vital signs of the workers H (H1 to H3) can be shared between the workers H (H1 to H3) and with external workers. This makes it easy to grasp the environment for each work location, and ultimately the environment of the entire work area. Therefore, accurate environmental improvements can be achieved.

[0051] Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and each of the above-described components can be appropriately modified within the scope of the present invention. For example, in the above embodiment, the environment measuring device 18 is attached to the belt of the work clothes 20, but this is not limitative and the device may be attached to the helmet 10.

[0052] In the above embodiment, the external control device 80 detects the occurrence of a risk factor and adjusts the outside air introduction equipment (ventilation equipment) 50, lighting equipment 60, and headlights 16 based on both data related to the work environment and data related to vital signs. However, this is not limited to this, and these adjustments may be made based on either data related to the work environment or data related to vital signs. Furthermore, the adjustments of the outside air introduction equipment (ventilation equipment) 50, lighting equipment 60, and headlights 16 do not have to be made simultaneously, but may be made in stages, or at least one of them may be made at a time. In this case, the acquired data may be graded using predetermined classification criteria based on measurement values, and adjustments may be made based on the graded results.

[0053] An acceleration sensor or a gyroscope may be attached to the helmet 10 or the work clothes 20. In this case, in addition to data on the vital signs of the worker H (H1 to H3), information on falls and walking can be acquired, allowing for effective alerts.

[0054] Furthermore, in addition to being displayed on the display unit 13a, the proximity warning information and the warning information may be configured to alert the workers H (H1 to H3) by sound or voice using the earmuffs 17. In this case, the alert may be given by a preset automatic voice in addition to the voice of the manager. [Explanation of symbols]

[0055] 10. Helmet 13a Display unit (display device) 13b Projection unit (display device) 14 Management device 15 Camera 16 Headlight 19 Vital Sensor (Sensor) 20 Work clothes 50 Outside air intake equipment (ventilation equipment) 60 Lighting equipment 80 External control device 86 Information storage means H(H1~H3) Operator T1 Tunnel interior

Claims

1. a helmet equipped with a camera that takes pictures behind the worker and a display device that can display the image taken by the camera; Work clothes worn by workers; a management device provided in the helmet and / or the work clothes, which acquires data related to the worker's work environment and controls the display of the display device; an external control device capable of communicating with the management device; The external control device is capable of detecting the occurrence of a risk factor based on data relating to the worker's working environment acquired by the management device, and when the occurrence of the risk factor is detected, causes warning information to be displayed on the display device via the management device.

2. 2. The work environment monitoring system according to claim 1, wherein the helmet and / or the work clothes further include a sensor for acquiring data relating to the worker's vital signs.

3. Equipped with ventilation equipment to ventilate the tunnel, The working environment monitoring system according to claim 2, characterized in that the external control device is capable of detecting the occurrence of a risk factor based on at least one of data relating to the working environment of the worker and the measurement values ​​by the sensor, and when the occurrence of the risk factor is detected, operates the ventilation equipment to adjust the ventilation volume and / or wind direction.

4. The tunnel is equipped with lighting equipment that can adjust the brightness of the lighting inside the tunnel. The work environment monitoring system according to claim 2, characterized in that the external control device is capable of detecting the occurrence of a risk factor based on at least one of data relating to the worker's work environment and the measurement values ​​by the sensor, and when the occurrence of the risk factor is detected, adjusts the illuminance and / or direction of the lighting of the lighting equipment.

5. The helmet is provided with a headlight whose light source output is adjustable; The work environment monitoring system of claim 2, wherein the external control device is capable of detecting the occurrence of a risk factor based on at least one of data regarding the worker's work environment and the measurement value by the sensor, and when the occurrence of the risk factor is detected, adjusts the output of the light source so that the illuminance of the headlight is increased.

6. the external control device is capable of detecting the occurrence of a risk factor based on at least one of data related to the worker's working environment and the measurement value by the sensor; an information storage means for storing data on the working environment of the worker, the measured values ​​by the sensor, and information on the occurrence of risk factors, 3. A work environment monitoring system according to claim 2, wherein the information stored in said information storage means can be distributed to an external terminal.

7. A monitoring method for a work environment monitoring system, comprising: The work environment monitoring system comprises: a helmet equipped with a camera that takes an image behind the worker and a display device that can display the image taken by the camera; work clothes worn by the worker; a management device that is provided on the helmet and / or the work clothes and that acquires data related to the worker's work environment and controls the display of the display device; and an external control device that can communicate with the management device; an acquisition step of acquiring data related to the worker's working environment; a display step of displaying on the display device the data related to the working environment of the worker acquired in the acquisition step; a sending step of sending the data related to the working environment of the worker acquired in the acquisition step to the external control device; a detection step of detecting occurrence of a risk factor based on the data related to the working environment of the worker transmitted in the transmission step; and an alarm information display step of displaying alarm information on the display device via the management device when the occurrence of a risk factor is detected in the detection step.

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