Safety management system and safety management method for workers in factory workplaces

Abstract

To provide a safety management system and a safety management method for workers in a workplace, which can reliably secure safety of workers who enter a management area that demarcates a range within which a movable machine can travel.SOLUTION: A safety management system comprises: a smart device owned by a worker, and capable of generating application information about locking operation and unlocking operation of a mobile machine; and an access management server including a determination unit that determines whether or not to lock or unlock the mobile machine based on the application information received from the smart device. The application information includes, as a worker location identification information, route information of a worker's starting point and arrival point, and a worker identification ID that identifies the worker. The access management server transmits a control signal instructing execution of an operation corresponding to the application information to a control device of the mobile machine according to a determination result of the determination unit, and transmits the determination result to the smart device that transmits the application information.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a safety management system and a safety management method for workers in a factory workplace. [Background technology]

[0002] In factories such as steelworks, movable equipment and vehicles (hereinafter referred to as mobile machines) travel. For this reason, it is important to separate the travel area of ​​the mobile machines from the work area of ​​the workers from the viewpoint of ensuring the safety of the workers. When a worker enters the travel area of ​​the mobile machines, the worker performs a locking operation to cut off the power source of the mobile machines, and enters the travel area after surely stopping the travel of the mobile machines in the travel area. In addition, when making the mobile machines travel again, it is necessary to release the locking operation of the mobile machines after confirming that the worker has left the travel area. On the other hand, when performing maintenance and inspection work on the mobile machines in the travel area, the worker may enter the travel area of ​​the mobile machines and then get on the top of the mobile machines (operator's cab) to perform the maintenance and inspection work. In this case, the worker may perform a locking operation of the mobile machines when entering the travel area of ​​the mobile machines, get on the top of the mobile machines after entering the travel area, and then release the locking operation of the mobile machines to make the mobile machines travel. Although the operator's seat on the top of the mobile machines is in the travel area of ​​the mobile machines, it is an area where the safety of the workers is ensured, so that the worker will not be in danger even if the locking operation of the mobile machines is released. However, all mobile devices in the travel area must be kept locked from the time the worker enters the travel area until he or she gets on the mobile device. However, when the worker locks the mobile device in the work area and unlocks the mobile device on the mobile device after passing through the travel area, the following problems arise because the place where the mobile device is locked and the place where the lock is unlocked are different.

[0003] 12(a) and 12(b) are diagrams for explaining an example of application of a conventional method for managing the safety of workers in a factory workplace. As shown in 12(a) and 12(b), a management area including the travel area of ​​the mobile unit M is set in advance, and a safety area in which the safety of the workers is ensured is defined outside the management area. 12(a) shows a scene in which a worker enters the management area from the line entrance / exit G, which is an entrance / exit to the management area, and 12(b) shows a scene in which the worker who has entered the management area gets into the driver's cab of the mobile unit M and is about to start operating the mobile unit M. When entering the management area from the line entrance / exit G, the worker inputs a lock control signal to the mobile unit control device 100 by operating the machine side operation panel 101 installed at the line entrance / exit G. In response to the input of the lock control signal, the mobile unit control device 100 turns on (locks) the lock switch (power cutoff device) of the mobile unit M. In addition, the worker enters the controlled area after placing an operation prohibition tag on the machine side operation panel 101 so that a third party does not turn off the lock switch (unlock operation). Then, the worker inputs an unlock control signal to the mobile unit control device 100 by operating the mobile unit operation panel 102 installed in the driver's cab of the mobile unit M for maintenance and inspection work of the mobile unit M in the controlled area. The mobile unit control device 100 turns off the lock switch of the mobile unit M in response to the input of the unlock control signal. However, in the example shown in Figs. 12(a) and 12(b), since the place where the worker performs the lock operation of the mobile unit M and the place where the worker performs the unlock operation are different, there is no problem when there is only one worker entering the controlled area, but a problem may occur when multiple workers enter the controlled area. That is, when the worker performs the unlock operation of the mobile unit M on the mobile unit operation panel 102 of the mobile unit M, the worker cannot recognize whether other workers are entering the controlled area, and therefore, a problem occurs in that the safety of other workers cannot be ensured by the unlock operation from the mobile unit operation panel 102.

[0004] In contrast, FIG. 13 is a diagram for explaining another example of the application of a conventional method for managing the safety of workers in a factory workplace. The safety management method shown in FIG. 13 is a method in which a central control room is installed, and a worker who is about to enter a controlled area requests an operator in the central control room to lock and unlock the mobile units M1 and M2. The operator in the central control room who is requested to perform a locking operation by the worker operates the central operation panel 103 to perform the locking and unlocking operation of the mobile unit M. In this case, no problem occurs if the operator in the central control room correctly recognizes the entry status of multiple workers into the controlled area. However, if the number of workers entering and exiting the controlled area increases, there is a possibility that the safety of the workers entering the controlled area may not be ensured due to human errors such as a misjudgment by the operator in the central control room, a failure to contact the operator when exiting from the line entrance / exit gates G1 and G2, or a failure to contact the operator in the cab of the mobile units M1 and M2, which becomes a problem. From this perspective, in order to ensure the safety of workers when they enter the driving area of ​​the mobile units, it is desirable for the locking and unlocking operations of the mobile units to be performed as automatically as possible.

[0005] In light of this background, various entrance / exit management systems have been proposed to ensure the safety of workers. Specifically, Patent Document 1 proposes a dangerous area entrance / exit management system having a gate provided at the boundary between a dangerous area and a safe area where a mobile device travels, an ID tag reader provided at the gate for identifying the IDs of people entering the dangerous area and people leaving the dangerous area, an entry / exit output means for instructing whether or not to enter the dangerous area, and a gate control means for opening and closing the gate. In this system, the entry of a worker into the dangerous area by opening the gate is performed on the condition that the ID of the worker is recognized, a signal allowing entry into the dangerous area is generated, and the vehicle is stopped. In addition, the exit of a worker from the dangerous area by opening the gate is performed on the condition that the ID of the worker is recognized. Furthermore, this system calculates the number of workers actually present in the dangerous area from the number of workers who have entered the dangerous area and the number of workers who have left the dangerous area, and stops the vehicle if a worker is present in the dangerous area. Patent document 2 also proposes a system that includes multiple magnetic field generating devices that generate magnetic fields in predetermined areas of a managed area, RFID tags that are activated by the generated magnetic fields and transmit tag information, and an RFID reader that receives the tag information, and that uses a first magnetic field generating device and a second magnetic field generating device to manage the entry and exit of workers between the divided areas that divide the managed area. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2013-71217 A [Patent Document 2] JP 2020-17165 A Summary of the Invention [Problem to be solved by the invention]

[0007] However, the entrance / exit management system described in Patent Document 1 installs a gate at the boundary between the danger zone and the safety zone where the mobile device travels. Therefore, when a wide area is set as the danger zone, such as the danger zone in a steelworks, the number of gates required increases, and the equipment cost increases. In addition, the method of identifying persons entering and leaving the danger zone by electromagnetic means such as an ID tag reader is prone to equipment malfunctions when the surrounding environment is not necessarily good, such as in a steelworks factory workshop, and the safety of workers may not be ensured due to erroneous recognition by the sensor. In addition, there is a problem that a lot of effort is required to maintain the electronic devices at all gates. In addition, the entrance / exit management system described in Patent Document 1 installs a gate at the boundary between the danger zone and the safety zone where the mobile device travels, and does not assume that the mobile device will travel in the cab of the mobile device located in the danger zone. Therefore, the method of installing the gate described in Patent Document 1 at the boundary between the danger zone and the cab of the mobile device and controlling the passage of workers by opening and closing the gate using a gate opening / closing means has a problem that it is difficult to apply to a relatively narrow space such as the cab of the mobile device. On the other hand, the entrance / exit control system described in Patent Document 2 is a system that can be applied even when a physical gate cannot be installed, but in a large dangerous area where multiple mobile devices travel, multiple magnetic field generators and RFID readers are required, which leads to increased equipment costs. Also, in places where multiple mobile devices travel and are prone to generating noise for magnetic fields and RFID readers, these devices are prone to malfunctions and false detections, and locking and unlocking mobile devices based on such information poses a high risk to ensuring the safety of workers.

[0008] The present invention has been made to solve the above-mentioned problems, and its object is to provide a safety management system and a safety management method for workers in a factory workplace that can reliably ensure the safety of workers who enter a controlled area that defines the area in which mobile devices can travel. [Means for solving the problem]

[0009] A first aspect of the present invention relates to a safety management system for workers in a factory worksite including a mobile device capable of being driven, a controlled area that defines the area in which the mobile device travels, a safety area located outside the controlled area, and a line entrance / exit gate located at the boundary between the controlled area and the safety area, and the system comprises a smart device carried by a worker who moves from the line entrance / exit gate as a starting point, through the controlled area to the driver's cab of the mobile device as a destination point, and capable of generating application information for locking and unlocking operations of the mobile device, and an entry management server including a judgment unit that judges whether or not the mobile device can be locked or unlocked based on the application information received from the smart device, wherein the application information includes route information of the worker's starting point and destination point, and a worker identification ID that identifies the worker, as worker position identification information, and the entry management server transmits a control signal to a control device of the mobile device instructing the execution of an operation corresponding to the application information depending on the judgment result of the judgment unit, and also transmits the judgment result to the smart device that transmitted the application information.

[0010] A second aspect of the present invention relates to a safety management system for workers in a factory worksite including a mobile device capable of being driven, a controlled area that defines the area in which the mobile device travels, a safety area outside the controlled area, and a line entrance / exit gate that is located at the boundary between the controlled area and the safety area, and the system comprises a smart device carried by a worker who moves from the driver's cab of the mobile device as a starting point, through the controlled area to the line entrance / exit gate that is an arrival point, and capable of generating application information for locking and unlocking operations of the mobile device, and an entry management server including a judgment unit that judges whether or not to lock or unlock the mobile device based on the application information received from the smart device, wherein the application information includes route information of the worker's starting point and arrival point, and a worker identification ID that identifies the worker, as worker position identification information, and the entry management server transmits a control signal to a control device of the mobile device instructing the execution of an operation corresponding to the application information depending on the judgment result of the judgment unit, and also transmits the judgment result to the smart device that transmitted the application information.

[0011] If the application information is a request for locking the mobile device, the judgment unit outputs a judgment result that permits the locking operation of the mobile device, on condition that the worker location identification information matches pre-registered identification information, and if the application information is a request for unlocking the mobile device, the judgment unit outputs a judgment result that permits the unlocking operation of the mobile device, on condition that the worker location identification information matches pre-registered identification information and that no application information requesting a locking operation of the mobile device has currently been received from another smart device.

[0012] A display device is installed in the factory workshop, and the access control server identifies the worker identification IDs of workers currently entering the controlled area and workers currently entering the driver's cab of the mobile device, and the display device displays the names of workers corresponding to the worker identification IDs identified by the access control server.

[0013] The route information of the worker's starting point included in the application information is identified by a QR code (registered trademark) displayed facing the safety area at the line entrance / exit or a QR code displayed facing the driver's cab side of the driver's cab of the mobile device, and the smart device generates the application information by reading the QR code with an imaging device provided in the smart device.

[0014] A first aspect of the present invention relates to a method for managing the safety of workers in a factory worksite including a mobile device capable of being driven, a controlled area that defines the area in which the mobile device travels, a safety area located outside the controlled area, and a line entrance / exit gate located at the boundary between the controlled area and the safety area, the method including the steps of: a smart device carried by a worker who moves from the line entrance / exit gate as a starting point, through the controlled area to a destination point, which is the driver's cab of the mobile device, generating application information for locking and unlocking the mobile device; and an entry management server determining whether or not to lock or unlock the mobile device based on the application information received from the smart device, wherein the application information includes route information of the worker's starting point and destination point, and a worker identification ID that identifies the worker, as worker location identification information, and the entry management server transmits a control signal to a control device of the mobile device instructing the worker to perform an operation corresponding to the application information depending on the determination result, and also transmits the determination result to the smart device that transmitted the application information.

[0015] A second aspect of the present invention relates to a method for managing the safety of workers in a factory worksite including a mobile device capable of being driven, a controlled area defining the area in which the mobile device travels, a safety area outside the controlled area, and a line entrance / exit gate located at the boundary between the controlled area and the safety area, the method including the steps of: a smart device carried by a worker who moves from the driver's cab of the mobile device as a starting point, through the controlled area to the line entrance / exit gate which is an arrival point, generating application information for locking and unlocking the mobile device; and an entry management server determining whether or not to lock or unlock the mobile device based on the application information received from the smart device, wherein the application information includes route information of the worker's starting point and arrival point, and a worker identification ID that identifies the worker, as worker position identification information, and the entry management server transmits a control signal to a control device of the mobile device instructing the worker to perform an operation corresponding to the application information depending on the judgment result, and also transmits the judgment result to the smart device that transmitted the application information. Effect of the Invention

[0016] According to the safety management system and safety management method for workers in a factory workplace of the present invention, it is possible to reliably ensure the safety of workers who enter a controlled area that defines the area in which mobile devices can travel. [Brief description of the drawings]

[0017] [Figure 1] FIG. 1 is a block diagram showing the configuration of a factory workplace according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a schematic diagram showing the configuration of a coke oven facility in a steelworks. [Diagram 3] FIG. 3 is a block diagram showing the configuration of an access management server according to an embodiment of the present invention. [Figure 4] FIG. 4 is a diagram for explaining the operation of the safety management system when a worker passes through the line entrance / exit gate, enters the controlled area, and then moves to the operator's cab of a mobile machine. [Diagram 5] Figure 5 is a diagram to explain the operation of the safety management system when a worker passes through the line entrance / exit gate, enters the controlled area, moves to the driver's cab of the mobile machine, and then performs an unlocking operation on the mobile machine to enable it to travel. [Figure 6] FIG. 6 is a diagram for explaining the operation of the safety management system when a worker completes a task in the cab of a mobile machine and moves from the cab of the mobile machine as a starting point through a controlled area to a destination, which is the line entrance / exit. [Figure 7] Figure 7 is a diagram to explain the operation of the safety management system when a worker completes work in the driver's cab of a mobile machine, moves to the destination, the line entrance / exit, and then performs an unlocking operation on the mobile machine to enable it to move. [Figure 8] FIG. 8 is a schematic diagram showing a network configuration of a safety management system for workers in a factory workplace according to one embodiment of the present invention. [Figure 9] FIG. 9 is a diagram showing an example of a screen configuration of a display device according to an embodiment of the present invention. [Figure 10] FIG. 10 is a diagram showing an example of a processing flow of the dedicated application according to an embodiment of the present invention. [Figure 11] FIG. 11 is a diagram showing an example of an entrance / exit identification ID displayed at a line entrance / exit. [Figure 12] FIG. 12 is a diagram for explaining an example in which a conventional method for managing safety of workers in a factory workplace is applied. [Figure 13] FIG. 13 is a diagram for explaining another example in which a conventional method for managing safety of workers in a factory workplace is applied. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] Hereinafter, a safety management system and a safety management method for workers in a factory workplace according to one embodiment of the present invention will be described with reference to the drawings.

[0019] [Factory Workshop] First, referring to FIG. 1 and FIG. 2, a factory work site to which the present invention is applied will be described. The factory work site to which the present invention is applied is a factory work site in which a mobile machine capable of being operated is arranged, and a predetermined area including the range in which the mobile machine travels is partitioned as a controlled area. A safety area is provided outside the controlled area, and a line entrance / exit is provided at the boundary between the controlled area and the safety area. The safety area is set to a range wider than the travel range of the mobile machine so that accidents do not occur due to contact between the mobile machine traveling in the controlled area and workers in the factory work site. The line entrance / exit is intended to limit the places where workers can pass between the safety area and the controlled area, and is often used to prevent workers from accidentally entering the controlled area by means of a manual or automatic gate or the like. In order to ensure the safety of the workers, it is essential that a lock operation is performed to shut off the power source of the mobile machine from the safety area until the worker enters the controlled area and enters the driver's cab of the mobile machine. The same applies to the time when the worker enters the controlled area from the driver's cab of the mobile machine and leaves the safety area.

[0020] In the example of the factory work site shown in FIG. 1, two mobile machines M1 and M2 are arranged in the controlled area, and one line entrance / exit gate G is provided at the boundary between the controlled area and the safety area. However, the number of mobile machines arranged in the controlled area may be two or more, and the number of line entrance / exit gates may also be two or more. As an example of the factory work site to which the present invention is applied, a coke oven facility in a steelworks as shown in FIG. 2 can be exemplified. As shown in FIG. 2, the coke oven facility in a steelworks has a plurality of combustion chambers and a plurality of carbonization chambers arranged alternately, and pre-treated coal is charged into each carbonization chamber by coal loading cars 10a to 10c. The coal charged into the carbonization chamber is carbonized by burning fuel gas in the combustion chamber at a temperature of 1100 to 1350°C for about 12 to 14 hours while blocking air. The red-hot coke carbonized in the carbonization chamber (red-hot coke) is discharged to the outside of the carbonization chamber through the furnace cover by pushers 11a to 11c. The red-hot coke discharged by the extruders 11a to 11c is transferred to the fire extinguishing cars 13a and 13b by the guide cars 12a to 12c arranged opposite the extruders 11a to 11c. The fire extinguishing cars 13a and 13b receive the red-hot coke from the guide cars 12a to 12c and transport it to the wet quenching system 14.

[0021] The coal loading cars 10a-10c, pushers 11a-11c, guide cars 12a-12c, and fire extinguishing cars 13a, 13b that make up the coke oven facility are all mobile machines that can run on laid tracks. In addition to these, inspection vehicles for maintenance and inspection may be placed on the tracks on which the pushers 11a-11c run, and such inspection vehicles also make up the coke oven facility and are included in the mobile machines. On the other hand, the coal loading cars 10a-10c and guide cars 12a-12c, etc., may be operated automatically (unmanned), but the mobile machines may also be equipped with a driver's cab or an on-board operation panel for operating the running of the machines.

[0022] Returning to FIG. 1, the factory work area is equipped with a mobile unit control device 100 for controlling the movement of the mobile units M1 and M2. The mobile unit control device 100 can realize a locking operation for stopping the movement of the mobile units M1 and M2 arranged in the controlled area and electrically or mechanically cutting off the power source of the mobile units M1 and M2 so as to maintain the stopped state based on a control signal generated inside or an external control signal. The mobile unit control device 100 can also realize an unlocking operation for releasing the locking operation in which the power source has been cut off based on a control signal generated inside or an external control signal. Note that the above locking operation is performed on all mobile units when multiple mobile units are installed in the controlled area, whereas the unlocking operation may be performed only on some of the mobile units (for example, either the mobile unit M1 or the mobile unit M2). This is because, when a worker enters the controlled area, it is necessary to reliably stop all mobile units, whereas the unlocking operation may be performed only on the minimum number of mobile units required.

[0023] [Safety Management System] Next, a safety management system for workers in a factory workplace according to one embodiment of the present invention will be described. The safety management system for workers in a factory workplace according to one embodiment of the present invention includes a smart device carried by a worker who moves from the line entrance / exit gate to the driver's cab of a mobile device, which is a destination point, through a controlled area, in the above-mentioned factory workplace, and capable of generating application information for locking and unlocking the mobile device, and an entry management server including a determination unit that determines whether or not the locking or unlocking of the mobile device can be performed based on the application information received from the smart device. The application information generated by the smart device includes route information of the worker's departure point and destination point, and a worker identification ID that identifies the worker, as worker position identification information. The entry management server also transmits a control signal to the mobile device control device 100 instructing the execution of an operation corresponding to the application information according to the determination result of the determination unit, and transmits the determination result to the smart device that transmitted the application information.

[0024] Another embodiment of the present invention provides a safety management system for workers in a factory workplace, which includes a smart device carried by a worker who moves from the driver's cab of a mobile device as a starting point to the line entrance / exit as a destination point through a controlled area, and an entry management server including a judgment unit that judges whether or not to lock or unlock the mobile device based on the application information received from the smart device. The application information generated by the smart device includes route information of the worker's starting point and destination point, and a worker identification ID that identifies the worker, as worker position identification information. The entry management server transmits a control signal to the mobile device control device 100 to instruct the execution of an operation corresponding to the application information, and transmits the judgment result to the smart device that transmitted the application information, according to the judgment result of the judgment unit.

[0025] [Smart Devices] Next, the configuration of the smart device will be described. The smart device carried by the worker is an electronic device such as a smartphone or tablet terminal that has built-in communication functions and simple computer functions and can utilize information processing functions by software. The smart device has computer functions including a microprocessor (CPU / MPU) and a wired or wireless network connection function inside the electronic device, and can link with external devices and can install and use multiple application software. The smart device is carried by each worker in the factory workshop, and when working together with other workers, the smart device is carried by each worker for the purpose of communicating with each other and progressing the work. Therefore, the worker in the factory workshop and the smart device assigned to the worker can be considered to be in the same position in the factory workshop.

[0026] The smart device of this embodiment generates application information for a lock operation or unlock operation of a mobile device by an operation of a worker. The application information includes lock operation application information for cutting off the power source of the mobile device when the worker is about to enter the controlled area from a safe area or when the worker is about to enter the controlled area from the driver's cab of the mobile device, or unlock operation application information for unlocking the mobile device and opening the power source when the worker exits the controlled area to the safe area or reaches the driver's cab of the mobile device from the controlled area. Furthermore, the application information includes route information of the worker's starting point and arrival point, and a worker identification ID for identifying the worker, as worker position identification information. Since workers who are about to enter a controlled area often enter the area for the purpose of performing maintenance and inspection work on the mobile device, if the mobile device on which the worker is about to work is identified, it becomes the position information of the worker in the controlled area, and rescue activities for the worker can be performed quickly in the event of a disaster.

[0027] The route information is composed of a starting point identification ID, which is the starting point of the worker, and a destination point identification ID, which is the destination of the worker. In this case, the starting point identification ID and the destination point identification ID are either an entrance / exit gate identification ID assigned to each line entrance / exit gate to identify the line entrance / exit gate, or a mobile device identification ID assigned to each mobile device to identify the mobile device. The entrance / exit gate identification ID and the mobile device identification ID are identified by symbols, codes, numerical information, etc. In addition, the worker identification ID is an identification ID assigned to each worker to identify the worker who is about to enter the controlled area, and is identified by a worker number, a job number, etc. However, the worker identification ID may be identification information of a smart device carried by the worker. This is because the smart device is carried by each of all workers who are qualified to enter the controlled area, and the correspondence between the smart device and its owner is specified in advance.

[0028] Moreover, the entrance / exit identification ID is preferably displayed at the line entrance / exit. The entrance / exit identification ID is "displayed at the line entrance / exit" means that the entrance / exit identification ID is displayed near the line entrance / exit. In this case, the entrance / exit identification ID is preferably displayed facing the safety area of ​​the line entrance / exit. That is, it is preferable that the entrance / exit identification ID is displayed so that the worker can visually recognize it before entering the controlled area from the line entrance / exit, and that the worker can visually recognize it after exiting from the controlled area to the safety area from the line entrance / exit. This allows the smart device carried by the worker to generate lock operation application information before the worker enters the controlled area from the line entrance / exit. Also, after the worker exits from the line entrance / exit to the safety area, the smart device carried by the worker can generate unlock operation application information. This makes it possible to prevent the worker from generating application information in a state where he or she has entered the controlled area by mistake.

[0029] On the other hand, the mobile device identification ID is preferably displayed in the driver's cab of the mobile device. The mobile device identification ID is "displayed in the driver's cab of the mobile device" means that the mobile device identification ID is displayed near the driver's cab of the mobile device. In this case, the mobile device identification ID is preferably displayed facing the driver's cab of the mobile device. That is, it is preferable that the mobile device identification ID is displayed so that the worker can visually recognize it before entering the controlled area from the driver's cab, and that the mobile device identification ID is displayed so that the worker can visually recognize it after reaching the driver's cab. This allows the lock operation application information to be generated by the smart device carried by the worker before the worker enters the controlled area from the driver's cab. In addition, after the worker enters the driver's cab of the mobile device, the unlock operation application information can be generated by the smart device carried by the worker. This prevents the worker from generating application information in a state where the worker has mistakenly entered the controlled area.

[0030] Dedicated application software (dedicated app) for implementing the functions of the safety management system of this embodiment is installed inside the smart device carried by the worker, and accepts input of the starting point identification ID, which is the starting point, from the worker. The starting point identification ID may be input from the touch panel of the smart device, or may be input using a voice input function of the smart device. In this case, it is preferable to display the starting point identification ID displayed at the line entrance / exit or the driver's cab of the mobile device as a QR code, and to input the starting point identification ID by reading the displayed QR code using an imaging device of the smart device. This is because a QR code reader can be installed as application software in commercially available smart devices, which allows the starting point identification ID to be imported into the smart device, making it easy to generate application information. The starting point identification ID may be displayed as a barcode instead of a QR code.

[0031] On the other hand, the destination point identification ID is specified by receiving information on the destination point from the worker. The destination point identification ID may be input from the touch panel of the smart device, or may be input using a voice input function of the smart device. By including the starting point identification ID and the destination point identification ID in the application information, the route that the worker will take through the controlled area can be roughly specified.

[0032] The application information is generated using a dedicated app for realizing the functions of the safety management system of this embodiment. The departure point identification ID is generated by importing the entrance / exit identification ID displayed at the line entrance / exit or the mobile device identification ID displayed in the driver's cab of the mobile device into the dedicated app as described above. The worker identification ID may be generated by importing information that identifies the owner, since the smart device contains information about the owner in advance. However, if the worker can be identified by authentication information (e.g., a login ID) for logging in to the dedicated app, such authentication information may be used as the worker identification ID.

[0033] As described above, the route information of the worker's departure point and arrival point and the worker identification ID that identifies the worker are information that identifies the worker who is entering the controlled area from the safety area, the worker who has reached the driver's cab of the mobile machine, the worker who is entering the controlled area from the driver's cab of the mobile machine, and the worker who has exited from the controlled area to the safety area, and identifies which line entrance / exit they will pass through and which mobile machine they will reach, and these are called worker location identification information. Note that the application information may include other information regarding the worker entering the controlled area and the entry situation, such as the date and time when the worker sent the application information, the worker's affiliation (the name of the company or organization to which the worker belongs), and the worker's organizational role (manager, supervisor, worker, etc.).

[0034] [Access Control Server] Next, the configuration of the entry management server will be described. The entry management server has a function of managing the safety of workers in a factory work area. The entry management server includes a determination unit that receives application information transmitted by a smart device and determines whether or not to lock or unlock a mobile device based on the received application information. When the worker location identification information included in the application information is included in the preregistered identification information, the determination unit determines that the worker location identification information matches the preregistered identification information. This confirms that the worker is moving between a regular line entrance / exit and a regular mobile device and that the worker is qualified to enter the controlled area. The preregistered identification information includes the worker identification ID of a worker qualified to enter the controlled area, the entrance / exit identification ID of a mobile device that is located in the controlled area and can be operated.

[0035] Then, when the determination unit determines that the application for the locking or unlocking operation of the mobile device is permitted, the entry management server transmits a control signal to the mobile device control device 100 to instruct the execution of an operation corresponding to the application information according to the determination result that permits the application for the locking or unlocking operation of the mobile device, and transmits the determination result to the smart device that transmitted the application information. That is, the entry management server transmits a control signal to the mobile device control device 100 to instruct the locking or unlocking operation of the mobile device. Furthermore, the entry management server transmits information indicating that the locking or unlocking operation of the mobile device has been permitted to the smart device that transmitted the application information. Note that the application information is an application for locking the mobile device, and the information transmitted to the smart device when the determination unit permits the application may be entry permission information permitting entry into the controlled area. This is because the power source of the mobile device in the controlled area is cut off, and the safety of the workers in the controlled area is ensured.

[0036] On the other hand, when the judgment unit judges that the application to lock or unlock the mobile device is not permitted, the entry control server transmits information indicating that the application to lock or unlock the mobile device is not permitted to the smart device that transmitted the application information. Note that when the application information is an application to lock the mobile device and the judgment unit does not permit the application, the information transmitted to the smart device may be entry denial information that does not permit entry into the controlled area. This is because it is possible to prevent workers from mistakenly entering the controlled area and to prevent unqualified workers from entering the controlled area. In this case, the entry control server does not permit the application to lock or unlock the mobile device, and therefore transmits a control signal to maintain the previous locked or unlocked state of the mobile device.

[0037] It is preferable to use a pulse signal as the control signal for the locking or unlocking operation transmitted from the access control server to the mobile station control device 100. In this case, the pulse signal for performing the locking or unlocking operation is continuously transmitted not only when the lock state of the mobile station M is changed, but also when the current state is maintained. This is because a failure of the access control server can be determined from the transmission state of the pulse signal, and the accidental transmission of a locking control signal or an unlocking control signal for the mobile station due to a failure of the access control server can be suppressed. Therefore, the control signal transmitted from the access control server to the mobile station control device 100 according to the judgment result of the judgment unit is a control signal for switching the lock state when the judgment unit permits the application, and is a control signal for maintaining the current control signal when the judgment unit does not permit the application.

[0038] The configuration of an entry control server applicable to this embodiment will be described with reference to Fig. 3. The entry control server 2 according to one embodiment of the present invention is configured by a general-purpose computer such as a workstation or a personal computer. As shown in Fig. 3, the entry control server 2 includes a communication unit 21 and is configured to be able to communicate with other devices via a network. The entry control server 2 is connected to, for example, an LTE router and is configured to be able to transmit and receive information to and from a smart device. The entry control server 2 includes a reception unit 22 and receives, as application information transmitted from a smart device, application information for a lock operation of a mobile device and application information for an unlock operation to release the power source of a mobile device.

[0039] The access control server 2 includes a storage unit 23, and stores information including the worker identification ID of a worker qualified to work in a preregistered factory workshop, the entrance / exit identification ID of the factory workshop, and the mobile device identification ID of a mobile device in the controlled area. The storage unit 23 also holds the application information up to the present time and the corresponding judgment result of the judgment unit 24 for each worker identification ID. However, when the access control server 2 judges that no worker has entered the controlled area and that no worker is in the driver's cab of any of the mobile devices, the past application information and the corresponding judgment result of the judgment unit 24 may be deleted (reset) from the storage unit 23. This is because while the mobile device is traveling, no worker has entered the controlled area, and access control to the controlled area can be newly started.

[0040] The access control server 2 includes a determination unit 24, which determines whether the worker location identification information included in the application information sent from the smart device matches the identification information registered in advance. The determination unit 24 also determines whether the current unlock operation application is acceptable or not, using application information previously accepted from other smart devices other than the smart device that sent the currently accepted application information and the judgment result. In this case, the information stored in the memory unit 23 is referenced.

[0041] The access control server 2 includes a control signal output unit 25 and has a function of transmitting a lock control signal for cutting off the power source to the mobile station control device 100 and a function of transmitting an unlock control signal for opening the power source based on the judgment result of the judgment unit 24. When the control signal output unit 25 transmits a lock control signal to the mobile station control device 100, a command to cut off the power sources of all mobile stations within the controlled area is transmitted. Moreover, it is preferable that the control signal output unit 25 is configured to transmit the control signal as a pulse signal and hold that state in the mobile station control device 100.

[0042] The access control server 2 includes a determination result output unit 26, and transmits the determination result by the determination unit 24 to the smart device that transmitted the lock operation application information or the unlock operation application information. In this case, it is preferable that the determination result output unit 26 transmits the determination result to the smart device after receiving a signal indicating that the lock operation or unlock operation of the mobile device has been completed in response to the lock control signal or the unlock control signal transmitted from the control signal output unit 25 to the mobile device control device 100.

[0043] [Implementation example when entering the controlled area from the line entrance / exit] Next, with reference to FIG. 4, the operation of the safety management system when a worker passes through the line entrance / exit gate, enters the controlled area, and then moves to the driver's cab of the mobile device will be described in detail. FIG. 4 shows a schematic state in which a worker passes through the line entrance / exit gate G and enters the controlled area to move to the mobile device M. The worker generates application information (lock operation application information) for locking the mobile device M using dedicated application software (dedicated app) of the safety management system installed in the smart device 1 that the worker possesses. In this case, the worker identification ID of the worker who generates the application information is specified by personal authentication when logging in to the dedicated app. Alternatively, the worker identification ID may be imported into the dedicated app in advance as the owner of the smart device 1, and the worker identification ID may be specified by the user ID at the time of logging in.

[0044] The worker specifies a starting point identification ID representing a starting point and a reaching point identification ID representing a reaching point as route information included in the lock operation application information. In this embodiment, the starting point identification ID is an entrance / exit gate identification ID assigned to the line entrance / exit gate G where the worker is going to enter and displayed on a display device 3 provided at the line entrance / exit gate G. The reaching point identification ID is a mobile device identification ID assigned to a mobile device M where the worker is going to go. In this case, the smart device 1 that generates the application information may accept the entrance / exit gate identification ID as an input from a touch panel or may accept input by a voice input function. Also, the entrance / exit gate identification ID displayed as a QR code as described above may be read by an imaging device of the smart device 1 and imported into a dedicated app. Then, the application information set by the worker is transmitted to the entry management server 2 via an LTE router 4 or the like using the communication function of the smart device 1.

[0045] The entry management server 2, which has received the lock operation application information from the smart device 1 carried by the worker, determines in its determination unit 24 whether or not to permit the lock operation of the mobile device M. Specifically, when the worker location identification information included in the lock operation application information is included in the identification information registered in advance, the determination unit 24 determines that the worker location identification information matches the identification information registered in advance. This confirms that the worker is entering the controlled area to move to a regular mobile device by passing through a regular line entrance / exit, and that the worker is qualified to enter the controlled area. Then, the determination unit 24 outputs a determination result that permits the lock operation application.

[0046] When the determination unit 24 issues a determination result permitting the lock operation application, the entry management server 2 transmits a lock control signal (a control signal for locking the mobile device M) corresponding to the lock operation application of the mobile device M to the mobile device control device 100. Furthermore, the entry management server 2 transmits information permitting the lock operation application (lock operation permission information) or information permitting entry into the controlled area as a determination result to the smart device 1 that transmitted the lock operation application information. However, it is preferable that the entry management server 2 transmits the lock control signal to the mobile device control device 100, and transmits the entry permission information after receiving a lock completion signal from the mobile device control device 100 indicating that the mobile device M in the controlled area has stopped and that the power source of the mobile device M has been locked. This is because a state in which the mobile device M in the controlled area is reliably stopped is realized at the stage when the worker is about to enter the controlled area.

[0047] As described above, when the entry permission information is sent to the smart device 1 that sent the lock operation application information, the worker can check the entry permission information on the screen of the smart device 1. Then, the worker can enter the controlled area from the line entrance / exit G specified in the lock operation application information. A gate for restricting the entry of the worker may be provided at the line entrance / exit G. This is to prevent the worker from entering the controlled area at a stage where the entry permission information is not displayed on the smart device 1 carried by the worker. Also, a gate control device may be provided at the gate for restricting the entry, and the opening and closing of the gate may be controlled based on the information displayed on the smart device 1 that received the entry permission information. In this case, it is preferable that the gate control device has a short-range wireless communication function such as Bluetooth (registered trademark) and a function for reading image information, etc., and controls the opening and closing of the gate by authenticating the entry permission information received by the smart device 1 using these. This is because it is possible to reliably prevent the holder of the smart device 1 that has not received the entry permission information from the entry management server 2 from mistakenly entering the controlled area.

[0048] This embodiment can also be applied to a case where there are multiple workers entering the controlled area. The entry management server 2 accepts application information for each worker identification ID of a worker who is qualified to enter the controlled area and transmits the determination result of the determination unit 24, so that it can determine which worker has entered the controlled area and which worker has reached the driver's cab of the mobile device M. In this case, when the entry management server 2 receives lock operation application information from the smart device 1 of the worker B in a state in which a lock control signal is being transmitted to the mobile device control device 100 based on the lock operation application information from the worker A, the entry management server 2 performs the following process. That is, at the time of receiving the lock operation application information from the smart device 1 held by the worker B, the entry management server 2 transmits a lock control signal to the mobile device control device 100 in response to the lock application information from the worker A. Therefore, when the worker location identification information included in the application information from the worker B matches the identification information registered in advance, the determination unit 24 transmits a determination result indicating that the lock operation application for the mobile device M is permitted to the smart device 1 held by the worker B. On the other hand, the entry management server 2 transmits a lock control signal to the mobile device control device 100 to maintain the lock of the mobile device M. However, since the lock control signal for the mobile device M has already been transmitted based on the lock operation application information from the worker A, if the entry management server 2 holds the determination result of permitting the lock operation application information from the worker B, it is not necessary to transmit a lock control signal corresponding to the lock operation application information from the worker B to the mobile device control device 100 again. Furthermore, when the worker A leaves the controlled area and an unlock operation application is made, the lock operation application from the worker B is permitted, so the transmission of the lock control signal to the mobile device control device 100 is continued. As a result, while any worker is in the controlled area, the lock of the mobile device M is maintained, and the safety of the workers is ensured.

[0049] [Embodiment for unlocking the mobile unit from the driver's cab of the mobile unit] Next, with reference to FIG. 5, the operation of the safety management system when a worker enters the controlled area through the line entrance / exit and moves to the driver's cab of the mobile unit, and then performs an unlocking operation of the mobile unit to run the mobile unit will be described in detail. FIG. 5 shows a schematic diagram of a state in which a worker enters the controlled area from the line entrance / exit G, which is the starting point, and enters the driver's cab of the mobile unit M, which is the destination point. In order to run the mobile unit M, the worker generates application information (unlock operation application information) for unlocking the mobile unit M using dedicated application software (dedicated app) of the safety management system installed in the smart device 1 that the worker possesses. The worker identification ID included in the unlock application information may be generated by personal authentication when logging in to the dedicated app, but if the worker identification ID is already held inside the smart device 1 when entering the controlled area, it is not necessary to input the worker identification ID again. In addition, the starting point identification ID representing the starting point and the destination point identification ID representing the destination, which are route information included in the unlock application information, are identified when the worker enters the controlled area from the line entrance / exit G, so it is not necessary to input the route information again. Therefore, unlock operation application information is generated inside the smart device 1 using the worker location identification information stored in the smart device 1 as application information. Then, the smart device 1 uses its communication function to transmit the unlock operation application information to the entry control server 2 via the LTE router 4 or the like.

[0050] The entry management server 2, which has received unlock operation application information from the smart device 1 carried by the worker, determines in its determination unit 24 whether or not the unlock operation of the mobile device M can be performed. Specifically, when the worker location identification information included in the unlock operation application information is included in pre-registered identification information, the determination unit 24 determines that the worker location identification information matches the pre-registered identification information. This confirms that the worker has passed through the regular line entrance / exit and moved to a regular mobile device, and that the worker is qualified to enter the controlled area. Then, the determination unit 24 outputs a determination result that the unlock operation application is permitted.

[0051] When the determination unit 24 outputs a determination result that permits the unlock operation application, the access management server 2 transmits an unlock control signal (a control signal for unlocking the mobile unit M) corresponding to the unlock operation application of the mobile unit M to the mobile unit control device 100. In this case, the mobile unit to be unlocked may be limited to the mobile unit M. This is because in many cases, maintenance and inspection of the mobile units can be performed by an operator without unlocking all the mobile units. Furthermore, the access management server 2 transmits information permitting the unlock operation application (unlock operation permission information) to the smart device 1 that transmitted the unlock operation application information as a determination result. However, it is preferable that the access management server 2 transmits the unlock control signal to the mobile unit control device 100 and transmits the unlock operation permission information after receiving an unlock completion signal from the mobile unit control device 100 indicating that the power source of the mobile unit M in the controlled area has been released. This is because it is possible to clearly convey to the operator that the mobile unit M can travel.

[0052] This embodiment can also be applied to the case where there are multiple workers entering the controlled area. The entry management server 2 accepts application information for each worker identification ID of a worker who is qualified to enter the controlled area, and the determination unit 24 determines whether the application is acceptable, so that it is easy to determine which worker is entering the controlled area. In this case, it is preferable that the determination unit 24 outputs a determination result that permits the unlock application for the mobile device M from the smart device 1 held by the worker, on the condition that the worker location identification information matches the identification information registered in advance and that no lock operation application information for the mobile device M has been received from the smart device 1 held by another worker at the current time.

[0053] Specifically, in a state where a lock control signal is being transmitted to the mobile device control device 100 based on the lock operation application information from the worker B, when the entry management server 2 receives unlock operation application information for the mobile device M1 from the smart device 1 of the worker A, the entry management server 2 performs the following process. That is, at the time of receiving the unlock operation application information from the smart device 1 possessed by the worker A, the entry management server 2 transmits a lock control signal corresponding to the lock operation application information from the worker B to the mobile device control device 100. Therefore, even if the worker location identification information included in the unlock operation application information for the mobile device M1 from the worker A matches the identification information registered in advance, the determination unit 24 has received the lock operation application information for all mobile devices from the smart device 1 possessed by the worker B, so outputs a determination result that the unlock application for the mobile device M1 is not permitted, and the entry management server 2 transmits unlock operation disapproval information that does not permit the unlock operation application for the mobile device M1 to the smart device 1 possessed by the worker A as a determination result. In addition, the access control server 2 maintains the lock control signals for all the mobile stations including the mobile station M1 that are being transmitted to the mobile station control device 100.

[0054] Thereafter, when worker B exits the safety area from the line entrance / exit, or when worker B enters the controlled area and reaches the driver's cab of the mobile unit M2, which is the destination of worker B, unlock operation application information is transmitted from the smart device 1 of worker B. The determination unit outputs a determination result permitting the unlock application of the mobile unit M2 on the condition that the worker location identification information included in the unlock operation application information from worker B matches the identification information registered in advance, and that no lock operation application information has been received for any mobile unit from the smart device 1 held by a worker other than worker B. Then, the entry management server 2 transmits unlock operation permission information for the mobile unit M2 to the smart device 1 held by worker B. This allows worker B to recognize that the mobile unit M2 is in a state where it can start traveling in the controlled area. However, it is also possible to transmit unlock operation permission information for the mobile unit M2 to the smart device 1 held by worker B, and also transmit unlock permission information for the mobile unit M1 to the smart device of worker A that has received unlock non-permission information for the mobile unit M1. Furthermore, a display device, which will be described later, may also be configured to display that an unlocking operation has been performed on the mobile device M1.

[0055] [Embodiment for locking the mobile unit from the driver's cab of the mobile unit] Next, with reference to Fig. 6, the operation of the safety management system when a worker completes a task in the cab of the mobile device and moves from the cab of the mobile device as a starting point to the line entrance / exit gate as a destination point via a controlled area will be described in detail. Fig. 6 shows a schematic diagram of a state in which a worker is about to enter a controlled area to move from the cab of the mobile device M to the line entrance / exit gate G. The worker uses dedicated application software (dedicated app) of the safety management system installed in the smart device 1 that the worker possesses to generate application information (lock operation application information) for a lock operation of the mobile device M. The method of identifying the worker identification ID in this case is the same as that described above.

[0056] The starting point identification ID included in the lock operation application information is the mobile device identification ID assigned to the mobile device M and displayed on the mobile device M. The arrival point identification ID is the entrance / exit gate identification ID assigned to the line entrance / exit gate G to which the worker is heading. In this case, the smart device 1 that generates the application information may receive the mobile device identification ID as an input from a touch panel or may receive input by a voice input function. Also, the mobile device identification ID displayed as a QR code in the driver's cab of the mobile device M may be read by the imaging device of the smart device 1 and imported into a dedicated app. Then, the generated application information regarding the lock operation application is transmitted to the entry management server 2 via the LTE router 4 or the like using the communication function of the smart device 1.

[0057] The entry management server 2, which has received the lock operation application information from the smart device 1 carried by the worker, determines in its determination unit 24 whether or not to permit the lock operation of the mobile device M. Specifically, when the worker location identification information included in the lock application information is included in pre-registered identification information, the determination unit 24 determines that the worker location identification information matches the pre-registered identification information. This confirms that the worker will move from the authorized driver's cab of the mobile device through the controlled area and from the authorized line entrance / exit to the safety area, and that the worker is qualified to enter the controlled area. Then, the determination unit 24 outputs a determination result that permits the lock operation application.

[0058] When the determination unit 24 outputs a determination result permitting the locking operation application, the entry management server 2 transmits a lock control signal to the mobile device control device 100 and transmits the determination result to the smart device 1 that transmitted the locking operation application information, as described above. Then, when entry permission information is transmitted to the smart device 1 that transmitted the locking operation application information, the worker can check the entry permission information on the screen of the smart device 1. Then, the worker can enter the controlled area from the driver's cab of the mobile device M identified in the locking operation application information.

[0059] [Implementation of procedure for exiting the controlled area] With reference to FIG. 7, the operation of the safety management system when the worker completes the work in the driver's cab of the mobile device, moves to the line entrance / exit gate, which is the destination, and then performs an unlocking operation on the mobile device to allow the mobile device to run will be described in detail. FIG. 7 shows a schematic diagram of a state in which the worker moves from the driver's cab of the mobile device M to the line entrance / exit gate G. When the worker exits the safety area, the worker generates application information (unlocking operation application information) for unlocking the mobile device M using dedicated application software (dedicated app) of the safety management system installed in the smart device 1 that the worker possesses. In this case, the method of identifying the worker identification ID is the same as above. In addition, the starting point identification ID representing the starting point and the arrival point identification ID representing the arrival point, which are route information included in the unlocking operation application information, are identified when the worker enters the controlled area from the driver's cab of the mobile device M, so there is no need to input the route information again. Therefore, the unlocking operation application information is generated inside the smart device 1 using the worker's position identification information stored in the smart device 1 as application information. Then, using the communication function of the smart device 1 that generated the unlock operation application information, the unlock operation application information is sent to the entry management server 2 via the LTE router 4 or the like.

[0060] The entry management server 2, which has received unlock operation application information from the smart device 1 carried by the worker, determines in its determination unit 24 whether or not the unlock operation of the mobile device M can be performed. Specifically, when the worker location identification information included in the unlock operation application information is included in pre-registered identification information, the determination unit 24 determines that the worker location identification information matches the pre-registered identification information. This confirms that the worker has passed through the regular line entrance / exit from the driver's cab of the regular mobile device and that the worker is qualified to enter the controlled area. Then, the determination unit 24 outputs a determination result that the unlock operation application is permitted.

[0061] When the determination unit 24 outputs a determination result permitting the unlock operation application, the entry management server 2 transmits an unlock control signal to the mobile device control device 100 and transmits the determination result to the smart device 1 that transmitted the unlock operation application information, as described above. In this case, all mobile devices in the controlled area may be unlocked. This is because, when the worker leaves the safety area, the safety of the worker is ensured regardless of which mobile device is traveling. Then, when the unlock operation permission information is transmitted to the smart device 1 that transmitted the unlock operation application information, the worker can check the unlock operation permission information of the mobile devices on the screen of the smart device 1.

[0062] This embodiment can also be applied to the case where there are multiple workers entering the controlled area as described above. In this case, it is preferable that the determination unit 24 of the entry management server 2 outputs a determination result that permits the unlock operation application of the mobile device, in response to the unlock operation application information from the smart device 1 carried by the worker, on the condition that the worker location identification information matches the identification information registered in advance and that no mobile device lock operation application information has been received from the smart device 1 carried by another worker at the current time.

[0063] [Network System] The safety management system of this embodiment can be realized by a network configuration exemplified in Fig. 8. A smart device 1 carried by a worker qualified to enter a controlled area of ​​a factory workshop stores information such as the worker's name and worker identification ID. Each smart device 1 has application software (dedicated app) dedicated to the safety management system of this embodiment installed. The dedicated app has a function for generating lock operation application information and unlock operation application information for the mobile device M. The smart device 1 is configured to be able to transmit and receive information to and from the entry management server 2 via an LTE router 4 using LTE or the like, which is a wireless communication standard available as a public line.

[0064] It is preferable to provide a VPN (Virtual Private Network) router 5 with a VPN connection function between the LTE router 4 and the access control server 2. This is because the use of a virtual dedicated line can reduce security risks to the safety control system. Furthermore, it is preferable to provide a security switch (SW) 6 between the VPN router 5 and the access control server 2, configured to detect and block external attacks against the network of the safety control system.

[0065] Meanwhile, the access management server 2 is connected to the mobile device control device 100 of the mobile device M. The safety management system of this embodiment may be applied to an existing mobile device M and mobile device control device 100. In this case, a lock control signal and an unlock control signal are sent as external control signals to the mobile device control device 100. However, in order to ensure the safety of workers even in the event of unintended trouble such as an abnormality in communication with the smart device 1 or a breakdown in the access management server 2, it is preferable that the access management server 2 transmits the lock control signal and the unlock control signal in a pulsed form so that the mobile device M is not unlocked due to a malfunction even if an abnormality occurs in the access management server 2.

[0066] [Display device] The safety management system of this embodiment includes a display device connected to the entry management server 2. The entry management server 2 preferably identifies the worker ID of the worker currently entering the controlled area based on the application information from the smart device 1 and the judgment result in the judgment unit 24, and displays the worker name corresponding to the worker ID identified by the entry management server 2 on the display device. The display device may also display the entrance / exit gate identification ID corresponding to the worker ID identified in this way based on the worker ID identified in this way. This makes it possible to identify the entrance / exit gate through which the worker currently entering the controlled area entered the controlled area. Furthermore, the mobile device identification ID included in the worker position identification information may be displayed. The entrance / exit gate identification ID and the mobile device identification ID are information regarding the entry route of the worker who entered the controlled area, and displaying them on the display device makes it easier for the manager to manage work safety.

[0067] The display device is, for example, a display. The display device may be installed in a factory management building that manages the factory work site. This is because the number of workers entering the controlled area can be grasped and the lock status of the mobile device can be confirmed. The display device may be installed at the line entrance / exit gate located in the controlled area or the driver's cab of the mobile device. This is because other workers entering the controlled area can be confirmed, and safety can be easily ensured in collaborative work. Here, a method for identifying the worker identification ID of the worker currently entering the controlled area based on the application information from the smart device 1 and the judgment result is as follows. That is, when the application information transmitted to the entry management server 2 is for applying to lock the mobile device, it is possible to identify whether the worker is moving from the line entrance / exit gate to the mobile device or from the driver's cab of the mobile device to the line entrance / exit gate from the start point identification ID and the arrival point identification ID included in the route information. Also, when the application information transmitted to the entry management server 2 is for unlocking the mobile device, it is possible to identify whether the worker is trying to unlock the mobile device from the driver's cab of the mobile device or from the safety area from the start point identification ID and the arrival point identification ID included in the route information.

[0068] In this way, the access control server 2 can identify, as time-series information, whether a specific worker has entered the controlled area and arrived at the driver's cab of the mobile device. The access control server 2 can then identify the current state of each worker's entry into the controlled area based on the lock operation application information and unlock operation application information transmitted from each smart device carried by a plurality of workers.

[0069] The display device may update the display screen as needed when identifying the worker ID currently entering the controlled area and displaying the worker name corresponding to the identified worker ID. The display device may also update the display at the timing when the entry management server 2 transmits a judgment result to any of the smart devices 1. A preferred embodiment of the display device is shown in FIG. 9. FIG. 9 is an example of a screen configuration of the display device 7. This displays the name of the worker currently entering the controlled area based on the entry permission information and the name of the mobile device corresponding to the mobile device identification ID designated by the worker. For example, the worker A and the worker B are in a state where the unlock operation application for the mobile device M1 is transmitted from the driver's cab of the mobile device M1 from their respective smart devices 1, and the unlock operation application is permitted by the entry management server 2. In this case, the display device 7 shows that the worker A and the worker B are in the driver's cab of the mobile device M1, and the mobile device M1 is in a state where it can run. Also, an application for unlocking the mobile unit M3 has been sent from the smart device of worker C, indicating that the application for unlocking has been approved by the access control server 2. By providing such a display device in the factory workplace, the working conditions of the workers in the controlled area can be recognized, making it easier to manage the safety of the workers.

[0070] [Special app] FIG. 10 is a diagram showing an example of a process flow of dedicated application software (dedicated app) that can be installed on a smart device 1. As shown in FIG. 10, a worker who enters a controlled area performs identity authentication by logging in to a dedicated app (entry application app) installed on the smart device 1 that the worker possesses, and a worker identification ID is identified. Then, either "lock operation application information" or "unlock operation application information" is selected from the application information creation screen, and the corresponding application information is generated. The worker position identification information included in the application information includes a worker identification ID and a starting point identification ID and a destination point identification ID, which are route information. The starting point identification ID is displayed at the location where the worker departs. The starting point identification ID can be imported into the dedicated app by reading a QR code displayed at the line entrance / exit or the driver's cab of a mobile device, for example. In that case, a QR code reading app can be used that photographs a QR code with an imaging device provided in the smart device and determines the starting point identification ID from the photographed image. In addition, the destination point identification ID is input by the worker by selecting a candidate destination point from an input screen of the dedicated app.

[0071] When the worker position identification information is specified in the dedicated app as described above, application information (lock operation application information or unlock operation application information) is sent to the entry management server by a sending operation. Then, when the smart device 1 receives a determination result from the entry management server 2, the determination result is displayed on the screen of the dedicated app. In this case, if the application information generated by the smart device 1 is lock operation application information, the dedicated app may wait until the next unlock operation application information is generated.

[0072] [QR Code] FIG. 11 shows an example in which a QR code is displayed as the entrance / exit identification ID displayed on the display device of the line entrance / exit. The example shown in FIG. 11 is a view of a manual opening / closing door 8 provided at the line entrance / exit from the safety area side. That is, the entrance / exit identification ID is displayed on the display device 3 of the line entrance / exit, and the entrance / exit identification ID is displayed facing the safety area of ​​the line entrance / exit. As a result, a worker who is going to enter the controlled area through the line entrance / exit stands on the side of the safety area of ​​the line entrance / exit and generates application information using a smart device, so that it is possible to prevent the worker from entering the controlled area before transmitting the application information to the entry management server. Also, in the example shown in FIG. 11, the entrance / exit identification ID displayed at the line entrance / exit is a QR code, and the entrance / exit identification ID is identified from the image information of the QR code using the imaging device provided in the smart device 1, so that it is possible to prevent the worker from entering the controlled area before transmitting the application information to the entry management server 2. In the present embodiment, the entrance / exit identification ID is specified by reading information displayed at the line entrance / exit with the smart device 1. This is different from a method of transmitting and receiving electromagnetic signals using a transmitter and a receiver of identification information. That is, unlike the method described in Patent Document 1 and Patent Document 2, which uses an ID tag reader or an RFID reader to receive information contained in a tag, a highly reliable safety management system can be constructed even in a case where the surrounding environment is not necessarily good, such as a factory work site. In addition, in a factory work site where the surrounding environment is not good, if a manually openable cover 9 is used for the display device 3 of the entrance / exit identification ID as in the example shown in FIG. 11, the display of the entrance / exit identification ID will not deteriorate. In addition, when the mobile device identification ID is displayed as a QR code in the driver's cab of the mobile device, the manually openable door 8 as shown in FIG. 11 is not necessarily required. It is sufficient that the QR code is displayed on the operation panel of the driver's cab of the mobile device. This is because it is possible to prevent entry into the controlled area before transmitting application information to the entry management server 2.

[0073] Although the embodiments of the present invention have been described above, the present invention is not limited by the descriptions and drawings that form part of the disclosure of the present invention according to the present embodiments. In other words, other embodiments, examples, and operation techniques, etc., made by those skilled in the art based on the present embodiments are all included in the scope of the present invention. [Explanation of symbols]

[0074] 1. Smart Devices 2. Access Control Server 3,7 Display device 4 LTE Router 5. VPN Routers 6. Security Switch 8 Opening and closing doors 9 Cover 10a~10c coal loading car 11a~11c Extruder 12a~12c Guide car 13a,13b Fire truck 14 Wet fire extinguishing equipment 21 Communications Department 22 Reception 23 Memory section 24 Judgment section 25 Control signal output section 26 Judgment result output section 100 Mobile device control device 101 Machine side control panel 102,102a,102b Mobile machine operation panel 103 Central control panel G, G1, G2 Line Entrance / Exit M,M1,M2 Mobile device

Claims

1. A safety management system for workers in a factory workplace including a mobile machine capable of being driven, a controlled area defining an area in which the mobile machine travels, a safety area provided outside the controlled area, and a line entrance / exit provided at a boundary between the controlled area and the safety area, comprising: a smart device carried by a worker who moves from the line entrance / exit point to the driver's cab of the mobile device, which is a destination point, through the controlled area, and capable of generating application information regarding locking and unlocking operations of the mobile device; an access control server including a determination unit that determines whether or not the mobile device can be locked or unlocked based on application information received from the smart device; Equipped with The application information includes route information of the starting point and the arrival point of the worker, and a worker identification ID that identifies the worker, as worker location identification information, the access control server transmits a control signal to the control device of the mobile device instructing the control device to execute an operation corresponding to the application information in response to a judgment result of the judgment unit, and transmits the judgment result to the smart device that transmitted the application information; When the application information is an application for locking the mobile device, the determination unit outputs a determination result that permits the locking operation of the mobile device on condition that the worker location identification information matches identification information registered in advance, If the application information is an application for unlocking the mobile device, the determination unit refers to the application information up to the current time stored in the memory unit to determine whether or not application information for requesting a locking operation of the mobile device has currently been received from another smart device, and outputs a determination result that permits the unlocking operation of the mobile device, on the condition that the worker location identification information matches pre-registered identification information and that application information for requesting a locking operation of the mobile device has not currently been received from another smart device. A safety management system for workers in factory workplaces.

2. A safety management system for workers in a factory workplace including a mobile machine capable of being driven, a controlled area defining an area in which the mobile machine travels, a safety area provided outside the controlled area, and a line entrance / exit provided at a boundary between the controlled area and the safety area, comprising: a smart device carried by a worker who moves from a cab of the mobile device as a starting point to the line entrance / exit as a destination point through the controlled area, the smart device being capable of generating application information regarding locking and unlocking operations of the mobile device; an access control server including a determination unit that determines whether or not the mobile device can be locked or unlocked based on application information received from the smart device; Equipped with The application information includes route information of the starting point and the arrival point of the worker, and a worker identification ID that identifies the worker, as worker location identification information, the access control server transmits a control signal to the control device of the mobile device instructing the control device to execute an operation corresponding to the application information in response to a judgment result of the judgment unit, and transmits the judgment result to the smart device that transmitted the application information; When the application information is an application for locking the mobile device, the determination unit outputs a determination result that permits the locking operation of the mobile device on condition that the worker location identification information matches identification information registered in advance, If the application information is an application for unlocking the mobile device, the determination unit refers to the application information up to the current time stored in the memory unit to determine whether or not application information for requesting a locking operation of the mobile device has currently been received from another smart device, and outputs a determination result that permits the unlocking operation of the mobile device, on the condition that the worker location identification information matches pre-registered identification information and that application information for requesting a locking operation of the mobile device has not currently been received from another smart device. A safety management system for workers in factory workplaces.

3. A display device is installed in the factory work area, The entry management server identifies an operator ID of an operator currently entering the controlled area and an operator currently entering the driver's cab of the mobile device, The display device displays a worker name corresponding to the worker identification ID specified by the access management server. The safety management system for workers in a factory workplace according to claim 1 or 2.

4. The route information of the starting point of the worker included in the application information is specified by a QR code displayed facing the safety area of ​​the line entrance / exit or a QR code displayed facing the driver's cab side of the driver's cab of the mobile device; The smart device generates the application information by reading the QR code with an imaging device provided in the smart device. The safety management system for workers in a factory workplace according to claim 1 or 2.

5. The route information of the starting point of the worker included in the application information is specified by a QR code displayed facing the safety area of ​​the line entrance / exit or a QR code displayed facing the driver's cab side of the driver's cab of the mobile device; The smart device generates the application information by reading the QR code with an imaging device provided in the smart device. The safety management system for workers in a factory workplace according to claim 3.

6. A method for managing safety of workers in a factory workplace including a mobile machine capable of being driven, a controlled area defining an area in which the mobile machine travels, a safety area provided outside the controlled area, and a line entrance / exit provided at a boundary between the controlled area and the safety area, comprising: A step in which a smart device carried by a worker who moves from the line entrance / exit as a starting point to the driver's cab of the mobile device as a destination point through the controlled area generates application information regarding a locking operation and an unlocking operation of the mobile device; an access control server determining whether or not to allow a locking or unlocking operation of the mobile device based on application information received from the smart device; Including, The application information includes route information of the starting point and the arrival point of the worker, and a worker identification ID that identifies the worker, as worker location identification information, The access control server transmits a control signal to the control device of the mobile device instructing the control device to execute an operation corresponding to the application information according to the judgment result, and transmits the judgment result to the smart device that transmitted the application information; When the application information is an application for locking the mobile device, the entry control server outputs a determination result that permits the locking operation of the mobile device on condition that the worker location identification information matches pre-registered identification information; If the application information is an application for unlocking the mobile device, the entry control server refers to the application information up to the present time stored in a memory unit to determine whether or not application information for requesting a locking operation of the mobile device has currently been received from another smart device, and outputs a determination result that permits the unlocking operation of the mobile device, on the condition that the worker location identification information matches pre-registered identification information and that application information for requesting a locking operation of the mobile device has not currently been received from another smart device. Methods for managing worker safety in factory workplaces.

7. A method for managing safety of workers in a factory workplace including a mobile machine capable of being driven, a controlled area defining an area in which the mobile machine travels, a safety area provided outside the controlled area, and a line entrance / exit provided at a boundary between the controlled area and the safety area, comprising: A step in which a smart device carried by a worker who moves from a cab of the mobile device as a starting point to the line entrance / exit as a destination point through the controlled area generates application information regarding a locking operation and an unlocking operation of the mobile device; an access control server determining whether or not to allow a locking or unlocking operation of the mobile device based on application information received from the smart device; Including, The application information includes route information of the starting point and the arrival point of the worker, and a worker identification ID that identifies the worker, as worker location identification information, The access control server transmits a control signal to the control device of the mobile device instructing the control device to execute an operation corresponding to the application information according to the judgment result, and transmits the judgment result to the smart device that transmitted the application information; When the application information is an application for locking the mobile device, the entry control server outputs a determination result that permits the locking operation of the mobile device on condition that the worker location identification information matches pre-registered identification information; If the application information is an application for unlocking the mobile device, the entry control server refers to the application information up to the present time stored in a memory unit to determine whether or not application information for requesting a locking operation of the mobile device has currently been received from another smart device, and outputs a determination result that permits the unlocking operation of the mobile device, on the condition that the worker location identification information matches pre-registered identification information and that application information for requesting a locking operation of the mobile device has not currently been received from another smart device. Methods for managing worker safety in factory workplaces.

Images