Construction site risk detection system and its server device

Abstract

The purpose of this system is to effectively improve safety at construction sites by detecting the risk of safety at the construction site being compromised due to deviations in the behavior of heavy machinery from the construction plan, and enabling site managers to point out improvements during patrols, etc. [Solution] The server device of the construction site risk detection system has a risk detection unit that detects risks of compromising safety at the construction site based on the construction plan of the construction site, heavy equipment operation history information, and rules related to the heavy equipment operating procedures, and a notification unit that notifies the administrator terminal of the detection results of the risk detection unit. The risk detection unit detects position deviation risk, which indicates the risk of heavy equipment working in a work area that deviates from the construction plan, task deviation risk, which indicates the risk of heavy equipment working with task content that deviates from the construction plan, and procedure deviation risk, which indicates the risk of heavy equipment working with operating procedures that deviate from the construction plan.

Description

[Technical Field]

[0001] The present invention relates to a construction site risk detection system and a server device thereof. [Background technology]

[0002] At construction sites such as civil engineering works, people and heavy machinery work in close proximity, and compared to other industries, there is a higher risk of serious accidents due to contact between heavy machinery and people. In response to this, in addition to methods to avoid contact accidents using the functions of heavy machinery, efforts are being made to improve safety awareness on site through on-site safety education and countermeasures.

[0003] Accidents are more likely to occur at construction sites when actions deviate from pre-established safety rules or when on-site workers mistakenly perform work that differs from the construction plan. For this reason, in order to increase safety at construction sites, it is important for site managers to quickly notice actions that deviate from the construction plan or rules and to give accurate instructions for reviewing any deviations from the construction plan or rules during daily patrols.

[0004] In response to this, conventional techniques include a method such as that described in Patent Document 1, which compares the location information of workers with the construction plan, detects that work is being carried out at a different location, and notifies the worker. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Publication No. 2020-138863 Summary of the Invention [Problem to be solved by the invention]

[0006] However, deviations from the construction plan that pose a risk to safety at construction sites are not limited to deviations in the work location. For example, deviations from the specific work content of heavy equipment, such as whether it is excavation or driving, or deviations from rules regarding heavy equipment operating procedures, such as sounding the horn before driving, can also pose a risk to safety at construction sites. Conventional technology does not take into account the risks posed by these deviations, and there is room for improvement.

[0007] The present invention has been made in consideration of the above circumstances, and aims to effectively improve safety at construction sites by detecting the risk of safety at the construction site being compromised due to deviations in the behavior of heavy machinery from the construction plan, and enabling site managers to point out improvements during patrols, etc. [Means for solving the problem]

[0008] In order to solve the above problems, the server device of the construction site risk detection system according to the present invention is a server device of the construction site risk detection system that detects the risk of compromising safety at a construction site where heavy machinery is operating, and comprises: a construction plan storage unit that stores a construction plan for the construction site; an operation history storage unit that stores operation history information of the heavy machinery transmitted from the heavy machinery; a rule storage unit that stores rules regarding the operation procedures of the heavy machinery to be performed for the work content of each work process that constitutes the construction plan; a risk detection unit that detects the risk based on the construction plan, the operation history information, and the rules; and a notification unit that notifies a terminal of a site manager of the construction site of the detection results of the risk detection unit, wherein the construction plan specifies the work content of each work process, the work area of ​​each work process, and identification information of the heavy machinery in charge of each work process, and the operation history information of the heavy machinery includes the location of the heavy machinery when working, the work content of the heavy machinery when working, and the time when the heavy machinery was working. the risk detection unit includes: a position deviation detection unit that detects a position deviation risk indicating a risk that the heavy equipment has worked in the work area deviating from the construction plan, based on the work area and identification information of the heavy equipment specified in the construction plan and the position of the heavy equipment included in the operation history information; an operation deviation detection unit that detects an operation deviation risk indicating a risk that the heavy equipment has worked with operation content that deviates from the construction plan, based on the work content specified in the construction plan and the work content of the heavy equipment included in the operation history information; and a procedure deviation detection unit that detects a procedure deviation risk indicating a risk that the heavy equipment has worked with an operation procedure that deviates from the construction plan, based on the rule corresponding to the work content specified in the construction plan and the operation procedure of the heavy equipment included in the operation history information, and outputs at least one detection result of the position deviation risk, the operation deviation risk, and the procedure deviation risk. [Effects of the Invention]

[0009] According to the present invention, the risk of safety at a construction site being compromised due to deviations in the behavior of heavy machinery from the construction plan can be detected, and the site manager can point out improvements during patrols, etc., thereby effectively improving safety at construction sites. Other problems, components, and advantages will become apparent from the following description of the embodiments. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a diagram illustrating the configuration of a construction site risk detection system according to a first embodiment. [Figure 2A] FIG. 2 is a diagram showing the functional configuration of the server device shown in FIG. [Figure 2B] FIG. 2 is a diagram showing the functional configuration of the heavy equipment shown in FIG. 1. [Figure 3] FIG. 2 is a diagram showing an example of a screen displayed on the administrator terminal shown in FIG. 1. [Figure 4A] 2B is a table showing a construction plan stored in the construction plan storage unit shown in FIG. 2A. [Figure 4B] 2B is a table showing operation history information stored in the operation history storage unit shown in FIG. 2A. [Figure 4C] 2B is a table showing map information stored in the map storage unit shown in FIG. 2A. [Figure 4D] 2B is a table showing fault information stored in the fault information storage unit shown in FIG. 2A. [Figure 4E] 2B is a table showing detection information stored in the detection information storage unit shown in FIG. 2A. [Figure 5A] 2B is a diagram for explaining the function of a position deviation detection unit shown in FIG. 2A. [Figure 5B] 2B is a diagram illustrating the function of a task deviation detection unit shown in FIG. 2A. [Figure 5C] FIG. 2B is a diagram for explaining the function of a procedure deviation detection unit shown in FIG. 2A. [Figure 6] 10 is a flowchart showing the processing performed by the server device when operation history information is received from a heavy machine. [Figure 7] 10 is a flowchart showing a process performed by the server device when feedback information is received from the administrator terminal. [Figure 8A] 10 is a flowchart showing a process performed by a position deviation detection unit of the server device. [Figure 8B] 10 is a flowchart showing processing performed by an operation deviation detection unit of the server device. [Figure 8C] 10 is a flowchart showing a process performed by a procedure deviation detection unit of the server device. [Figure 9] FIG. 10 is a diagram showing the functional configuration of a heavy machine according to a second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0011] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In all drawings for explaining the present embodiment, components having the same functions are designated by the same reference numerals, and repeated explanations thereof may be omitted.

[0012] [First embodiment] A first embodiment of the present invention will be described with reference to Figures 1 to 8C. Figure 1 is a diagram showing the configuration of a construction site risk detection system 1 according to the first embodiment.

[0013] In this embodiment, it is assumed that a plurality of heavy machines 110 and workers are present at the construction site 150. In addition, in this embodiment, it is assumed that a surveillance camera 160 for managing the construction site 150 is installed at the construction site 150. In this embodiment, it is assumed that a construction site management system 170 for managing the construction site 150 and a construction site risk detection system 1 for detecting risks to safety at the construction site 150 are installed at the construction site 150. The heavy machine 110 is one of work machines such as construction machinery, and in this embodiment, a hydraulic excavator is used as an example of the heavy machine 110.

[0014] The construction site risk detection system 1 comprises heavy equipment 110 operating at the construction site 150, a terminal 130 of the site manager of the construction site 150 (hereinafter also referred to as the "manager terminal 130"), and a server device 100 communicatively connected to each of the heavy equipment 110 and the manager terminal 130.

[0015] The heavy machinery 110 is connected to the server device 100 of the construction site risk detection system 1 via a public line 101. The administrator terminal 130 is configured by a smartphone, tablet, PC, or the like, and is connected to the server device 100 via the public line 101.

[0016] The heavy equipment 110 collects operation history information, such as the position of the heavy equipment 110 at the construction site 150 during work, as well as operation information and status information of the heavy equipment 110 during work, and transmits this information to the server device 100 periodically (for example, every few hours). The operation information is an operation signal output from an operation lever that operates each device of the heavy equipment 110, such as the work equipment or traveling equipment, or information determined based on the operation signal. Specifically, the operation information is information indicating a swing operation, an arm operation, a boom operation, a crawler operation, or the like. The status information is information indicating the operating status of the heavy equipment 110. Specifically, the status information is information indicating the operating status of each device of the heavy equipment 110, such as the engine speed, the angle of each joint of the work equipment, the swing angle of the rotating body, the load applied to the work equipment, or the pressure of each hydraulic cylinder. Furthermore, the status information is information indicating the operating status of the engine key, operation lever, lock lever, seat belt, etc. Furthermore, the status information is information indicating the setting status of the work mode of the heavy equipment 110, which specifies whether the work is lifting work, excavation, etc.

[0017] The surveillance camera 160 transmits the monitoring results of the construction site 150 to the construction site management system 170 via the public line 101. For example, the surveillance camera 160 monitors the entry of workers into the construction site by the heavy equipment 110, and transmits information indicating the presence or absence of workers at the target location to the construction site management system 170. The construction site management system 170 is a system that manages the construction site 150, and in addition to the monitoring results of the surveillance camera 160, grasps the location information of the heavy equipment 110 operating at the construction site 150, the dump trucks entering and leaving the construction site 150, and the workers working at the construction site 150, and manages the situation of the construction site 150. The construction site management system 170 transmits this information to the server device 100 of the construction site risk detection system 1.

[0018] When the server device 100 of the construction site risk detection system 1 receives information transmitted from the heavy equipment 110, it stores the received information. Based on the stored information, the server device 100 periodically (for example, every few hours) checks whether the behavior of the heavy equipment 110 or the workers deviates from the construction plan or rules. In this embodiment, the rules refer to rules regarding the operating procedures of the heavy equipment 110 that should be performed for the work content of each work process that makes up the construction plan. Deviation of the behavior of the heavy equipment 110 or the workers from the construction plan or rules poses a risk that the safety of the construction site 150 will be compromised. In this embodiment, the risk that the safety of the construction site 150 will be compromised due to deviation of the behavior of the heavy equipment 110 or the workers from the construction plan or rules will also be simply referred to as "plan deviation risk."

[0019] When a plan deviation risk is detected, the server device 100 notifies the manager terminal 130 of that fact. Furthermore, the server device 100 transmits the current detection result of the plan deviation risk in response to an inquiry from the manager terminal 130. Note that the server device 100 may use the monitoring results of the monitoring camera 160, as well as the position information of the heavy equipment 110, dump trucks, and workers, transmitted from the construction site management system 170, to detect the plan deviation risk.

[0020] Furthermore, in response to a detected plan deviation risk, the server device 100 may receive feedback (hereinafter also referred to as "FB") information from the administrator terminal 130 indicating that no plan deviation actually occurred and that the detection was a false detection due to a decrease in positioning accuracy or communication quality. The server device 100 takes this FB into consideration when detecting subsequent plan deviation risks. In this way, by transmitting detection information on plan deviation risks to the administrator terminal 130, the server device 100 can effectively improve the safety of the construction site 150.

[0021] FIG. 2A is a diagram showing the functional configuration of the server device 100 shown in FIG.

[0022] The server device 100 includes a CPU 201, a communication I / F 202, a memory 204, a storage 205, and an internal bus 203 for connecting these. The hardware of the server device 100 may be configured using a general PC, a server, or a cloud device. Note that, although the storage 205 and the CPU 201 for executing a program are depicted as the same device in FIG. 2A, the storage 205 may be configured using multiple devices, such as a database server.

[0023] The CPU 201 executes a construction plan input program 211 , an operation history input program 212 , a feedback receiving program 213 , a risk detection program 214 , and a display control program 215 that are loaded in the memory 204 .

[0024] The storage 205 has a construction plan memory unit 271, an operation history memory unit 272, a rule memory unit 273, a map memory unit 274, a fault information memory unit 275, a detection information memory unit 276, and an other system information memory unit 277.

[0025] The construction plan storage unit 271 stores the construction plan and construction drawings for the construction site 150. The construction plan specifies each work process that constitutes the construction plan, the work content of each work process, the work area of ​​each work process, and the identification information (ID) of the heavy equipment 110 in charge of each work process. The construction plan and construction drawings are transmitted from the manager terminal 130 to the server device 100 and stored in the construction plan storage unit 271 by the construction plan input program 211.

[0026] The operation history storage unit 272 stores operation history information of the heavy equipment 110. As described above, the operation history information includes the position of the heavy equipment 110 when it was working, as well as operation information and status information of the heavy equipment 110 when it was working. Furthermore, the operation history information includes the work content of the heavy equipment 110 when it was working, and the operation procedures performed when it was working. The operation history information is periodically transmitted from the heavy equipment 110 to the server device 100, and is stored in the operation history storage unit 272 by the operation history input program 212.

[0027] The rule storage unit 273 stores rules regarding the operation procedures of the heavy equipment 110 to be performed for the work content of each work process that constitutes the construction plan. The rules are transmitted from the manager terminal 130 to the server device 100 and stored in the rule storage unit 273 by the construction plan input program 211.

[0028] The map storage unit 274 pre-stores map information showing a map of the construction site 150. The map information includes the range of the work area of ​​the heavy equipment 110 specified by the construction plan. The range of this work area is set by the construction plan input program 211. Furthermore, when FB information transmitted from the manager terminal 130 to the server device 100 is received, the map information is updated by the FB receiving program 213.

[0029] The fault information storage unit 275 stores fault information indicating the type and area of ​​a fault that has occurred at the construction site 150. The types of fault include a decline in positioning accuracy and a decline in communication quality. A decline in positioning accuracy means that the positioning accuracy of GNSS or the like has fallen below a standard. A decline in communication quality means that the communication quality has fallen below a standard due to a decline in communication speed or communication interruption in the communication environment of the construction site 150, including the public line 101. In this embodiment, the area where such a fault has occurred is also referred to as a "fault area." The fault information is included in FB information and transmitted from the administrator terminal 130 to the server device 100, and is stored in the fault information storage unit 275 by the FB receiving program 213.

[0030] The detection information storage unit 276 stores detection information, which is information indicating the detection results of plan deviation risks. The detection information is stored in the detection information storage unit 276 by the risk detection program 214. The detection information is periodically updated by the risk detection program 214.

[0031] The other system information storage unit 277 stores information transmitted from the construction site management system 170. The information transmitted from the construction site management system 170 includes the monitoring results of the monitoring camera 160, as well as the location information of the heavy machinery 110 operating at the construction site 150, the dump trucks entering and leaving the construction site 150, and the workers working at the construction site 150.

[0032] The construction plan input program 211 has a construction plan setting unit 221. The construction plan setting unit 221 stores the construction plan and construction drawings transmitted from the manager terminal 130 in the construction plan storage unit 271. At the same time, the construction plan setting unit 221 sets the range of the work area of ​​the heavy equipment 110 specified by the construction plan in the map information stored in the map storage unit 274. Furthermore, the construction plan setting unit 221 stores the rules transmitted from the manager terminal 130 in the rule storage unit 273.

[0033] The operation history input program 212 has an operation history setting unit 231. The operation history setting unit 231 stores the operation history information transmitted from the heavy equipment 110 in the operation history storage unit 272.

[0034] The feedback receiving program 213 has a feedback setting unit 241. The feedback setting unit 241 stores, in the fault information storage unit 275, fault information included in the feedback information transmitted from the manager terminal 130 that has received a notification that a plan deviation risk has been detected. The feedback setting unit 241 updates the fault information stored in the fault information storage unit 275 every time it receives feedback information including fault information. Furthermore, the feedback setting unit 241 updates the presence or absence of a fault in each area included in the map information stored in the map storage unit 274 every time it receives feedback information including fault information.

[0035] The risk detection program 214 detects a risk that the safety of the construction site 150 will be compromised based on the construction plan and construction drawings stored in the construction plan storage unit 271, the operation history information stored in the operation history storage unit 272, the rules stored in the rule storage unit 273, the map information stored in the map storage unit 274, and information from the construction site management system 170 stored in the other system information storage unit 277. The risk detection program 214 is executed periodically.

[0036] The risk detection program 214 has an information acquisition unit 251, a position deviation detection unit 252, an operation deviation detection unit 253, a procedure deviation detection unit 254, and a notification unit 255. In this embodiment, the position deviation detection unit 252, the operation deviation detection unit 253, and the procedure deviation detection unit 254 are collectively referred to as a "risk detection unit 256." The risk detection unit 256 outputs at least one detection result of a position deviation risk, an operation deviation risk, and a procedure deviation risk, which will be described later.

[0037] The information acquisition unit 251 acquires the construction plan and construction drawings stored in the construction plan storage unit 271. The information acquisition unit 251 acquires the operation history information stored in the operation history storage unit 272. The information acquisition unit 251 acquires the rules stored in the rule storage unit 273. The information acquisition unit 251 acquires the map information stored in the map storage unit 274. The information acquisition unit 251 acquires information from the construction site management system 170 stored in the other system information storage unit 277.

[0038] The position deviation detection unit 252 detects a position deviation risk indicating the risk that the heavy equipment 110 or worker has worked in a work area that deviates from the construction plan, based on the construction plan acquired by the information acquisition unit 251, map information including the presence or absence of obstacles in each area, operation history information, and information from the construction site management system 170. Specifically, the position deviation detection unit 252 detects a position deviation risk indicating the risk that the heavy equipment 110 has worked in a work area that deviates from the construction plan, based on the work area specified in the construction plan and the position of the heavy equipment 110 at the time of work included in the operation history information. The position deviation detection unit 252 detects a position deviation risk indicating the risk that the worker has worked in a work area that deviates from the construction plan, based on information related to human-mixed work specified in the construction plan and human detection information included in the operation history information, which will be described later. The position deviation risk related to the worker is detected, for example, when a worker is present in a work area that is not expected for workers to enter. When the position deviation detection unit 252 detects a position deviation risk, it outputs information relating to the detected position deviation risk to the detection information storage unit 276 and updates the detection information stored in the detection information storage unit 276.

[0039] The work deviation detection unit 253 detects a work deviation risk, which indicates the risk that the heavy equipment 110 has performed work content that deviates from the construction plan, based on the construction plan and operation history information acquired by the information acquisition unit 251. Specifically, the work deviation detection unit 253 detects a work deviation risk based on the work content specified in the construction plan and the work content at the time of operation of the heavy equipment 110, which is included in the operation history information. When the work deviation detection unit 253 detects a work deviation risk, it outputs information related to the detected work deviation risk to the detection information storage unit 276, and updates the detection information stored in the detection information storage unit 276.

[0040] The procedure deviation detection unit 254 detects a procedure deviation risk indicating the risk that the heavy equipment 110 has performed work using an operating procedure that deviates from the construction plan, based on the construction plan, rules, and operation history information acquired by the information acquisition unit 251. Specifically, the procedure deviation detection unit 254 detects a procedure deviation risk based on rules corresponding to the work content specified in the construction plan and the operating procedure during work of the heavy equipment 110 included in the operation history information. When the procedure deviation detection unit 254 detects a procedure deviation risk, it outputs information related to the detected procedure deviation risk to the detection information storage unit 276 and updates the detection information stored in the detection information storage unit 276.

[0041] The notification unit 255 notifies the manager terminal 130 of the detection result of the risk detection unit 256. Specifically, when the risk detection unit 256 detects any plan deviation risk (at least one of a position deviation risk, an operation deviation risk, and a procedure deviation risk), the notification unit 255 transmits the updated detection information stored in the detection information storage unit 276 to the manager terminal 130 via the communication I / F 202.

[0042] The display control program 215 is executed when a display request related to detection information of plan deviation risk is transmitted from the manager terminal 130. The display control program 215 has a display content generation unit 261. The display content generation unit 261 acquires detection information from the detection information storage unit 276 in response to the display request, generates display content for the manager terminal 130 related to the acquired detection information, and transmits the display content to the manager terminal 130 via the communication I / F 202.

[0043] FIG. 2B is a diagram showing the functional configuration of the heavy equipment 110 shown in FIG.

[0044] The heavy equipment 110 comprises a control device 281, an approach detection device 282, an inclination detection device 283, an alarm device 284, an information recording device 285, a communication device 286, a work content estimation device 288, and an operation procedure estimation device 289, as well as a network 287 within the heavy equipment 110 that connects these devices.

[0045] The control device 281 is a device that controls the operation of the heavy equipment 110. The control device 281 acquires operation information and status information of the heavy equipment 110 from each component of the heavy equipment 110 connected to the network 287. The control device 281 may limit the output of the power source (engine) of the heavy equipment 110 when the approach detection device 282 detects the approach of a worker. The control device 281 may limit the output of the power source of the heavy equipment 110 when it detects that the heavy equipment 110 has tilted to an angle that poses a risk of tipping over.

[0046] The approach detection device 282 is a device that can detect the approach of a worker or another heavy machine 110 around the heavy machine 110. The approach detection device 282 is configured by a camera or LiDAR. Alternatively, the approach detection device 282 may be configured by an RFID detection device that detects an RFID tag carried by a worker.

[0047] The tilt detection device 283 is a device that measures the tilt angle of the heavy equipment 110 and detects when the measured tilt angle reaches an angle that poses a risk of tipping over of the heavy equipment 110. The tilt detection device 283 is configured with an inertial measurement unit (IMU) or the like.

[0048] The alarm device 284 is a device that issues an alarm. When the approach detection device 282 detects the approach of a worker, the alarm device 284 issues an alarm to the worker (operator) on board the heavy equipment 110 and the approaching worker. When the tilt detection device 283 detects that the heavy equipment 110 has tilted to an angle that poses a risk of tipping over, the alarm device 284 issues an alarm to the worker on board the heavy equipment 110. The alarm device 284 is configured by, for example, a patrol lamp, a monitor, a speaker, or the like.

[0049] The work content estimation device 288 is a device that estimates the work content when the heavy equipment 110 is working. The work content estimation device 288 estimates the work content based on operation information when the heavy equipment 110 is working, and status information such as the posture (angle) and load of the heavy equipment 110 when working. Examples of the work content that can be estimated include excavation, loading, lifting work, and movement. Note that in this embodiment, the work content is estimated using only information inside the heavy equipment 110, but it may also be estimated by the server device 100 in combination with information outside the heavy equipment 110.

[0050] The operation procedure estimation device 289 is a device that estimates the operation procedure performed when the heavy equipment 110 is working. The operation procedure estimation device 289 estimates the operation procedure by checking the transition of the operating state of the heavy equipment 110, which is indicated by the state information of the heavy equipment 110 when working. The operation procedure differs depending on the work content. The relationship between the work content, state transition, and operation procedure is preset in the operation procedure estimation device 289. For example, consider a case where the work content is transportation and the state information indicates the state transition of "engine key ON → seat belt fastened → horn sounded → crawler operation after a certain time has passed." In this case, the operation procedure estimation device 289 estimates that the operation procedure performed is "engine key ON → seat belt fastened → horn sounded → wait until a certain time has passed → crawler operation."

[0051] The positioning device 290 is a device that measures the current position of the heavy equipment 110. The positioning device 290 is configured by, for example, a device that uses satellite positioning such as GNSS, or a device that uses an electro-optical distance measuring device such as TotalStation.

[0052] The information recording device 285 records, for a certain period of time, the detection results of the approach detection device 282, the measurement results and detection results of the tilt detection device 283, whether or not the alarm device 284 has issued an alarm, the operation information and status information acquired by the control device 281, and the measurement results of the positioning device 290.

[0053] The communication device 286 periodically transmits the information stored in the information recording device 285 to the server device 100 .

[0054] Fig. 3 is a diagram showing an example of a screen 301 displayed on the manager terminal 130 shown in Fig. 1. Fig. 3 shows the display content related to the detection information of the plan deviation risk transmitted from the server device 100 to the manager terminal 130 in response to a display request from the manager terminal 130 related to the detection information.

[0055] To allow the site manager to easily grasp the current detection status of the plan deviation risk, the screen 301 of the manager terminal 130 displays the current position of the heavy equipment 110, details of the detected plan deviation risk, and the work area and work content specified by the construction plan corresponding to the detected plan deviation risk. For the work area, whether or not there is a decrease in positioning accuracy and whether or not there is a decrease in communication quality is also displayed.

[0056] In this way, the site manager who views the manager terminal 130 can immediately grasp the current detection status of the plan deviation risk, and can prioritize inspection of the work area and heavy machinery 110 where the plan deviation risk has been detected during patrols, etc. The site manager can immediately point out improvements. The construction site risk detection system 1 can effectively improve the safety of the construction site 150.

[0057] As shown in FIG. 3, the screen 301 displayed on the administrator terminal 130 has an input button for feeding back fault information about a decrease in positioning accuracy or a decrease in communication quality.

[0058] 4A to 4E, an example of the contents of a table managed by the server device 100 will be described. Fig. 4A is a table showing a construction plan stored in the construction plan storage unit 271 shown in Fig. 2A.

[0059] The construction plan stored in the construction plan storage unit 271 is composed of records of ID 401, work process 402, start date and time 403, end date and time 404, work content 405, work area 406, responsible heavy equipment ID 407, and human-mixed work 408.

[0060] ID 401 indicates identification information that uniquely identifies each work process that constitutes the construction plan. Work process 402 indicates the name of each work process. Start date and time 403 indicates the date and time when each work process starts. End date and time 404 indicates the date and time when each work process ends. Work content 405 indicates the work content performed by the heavy equipment 110 in each work process. Examples of work content 405 include "loading," "excavation," "slope shaping," "embankment work," "lifting work," or "movement." If the work process does not use the heavy equipment 110, nothing is set. Work area 406 indicates the work area of ​​each work process. The name of the area included in the map information is used for work area 406. Responsible heavy equipment ID 407 indicates the identification information of the heavy equipment 110 responsible for each work process. If the work process does not use the heavy equipment 110, nothing is set. The human-involved work 408 is information indicating whether or not each work process corresponds to a human-involved work in which heavy machinery 110 and workers work together. If it corresponds to a human-involved work, it is set to "yes," and if it does not correspond to a human-involved work, it is set to "no."

[0061] FIG. 4B is a table showing operation history information stored in operation history storage unit 272 shown in FIG. 2A.

[0062] The operation history information stored in the operation history storage unit 272 is composed of records of heavy equipment ID 411, location 412, update date and time 413, operation information 414, work content 415, operation procedure 416, human detection 417, and status information 418.

[0063] The heavy equipment ID 411 indicates identification information that uniquely identifies the heavy equipment 110. The location 412 indicates the location information of each heavy equipment 110 when it was working. The update date and time 413 indicates the date and time when the operation history information was updated using information sent from each heavy equipment 110. The operation information 414 indicates the operation information of each heavy equipment 110 when it was working. The work content 415 indicates the work content of each heavy equipment 110 when it was working. The operation procedure 416 indicates the operation procedure performed when each heavy equipment 110 was working. The human detection 417 indicates whether or not a worker was detected around the heavy equipment 110 while it was working. If a worker was detected, this is set to "Yes", and if a worker was not detected, this is set to "No". The status information 418 indicates the status information of each heavy equipment 110 when it was working.

[0064] FIG. 4C is a table showing map information stored in map storage unit 274 shown in FIG. 2A.

[0065] The map information stored in the map storage unit 274 is configured by records of an area ID 421 , an area name 422 , coordinates 423 , a positioning accuracy degradation 424 , and a communication quality degradation 425 .

[0066] The area ID 421 indicates identification information that uniquely identifies each area of ​​the construction site 150. The area name 422 indicates the name of each area. The coordinates 423 indicate the coordinates that define the range of each area. In this embodiment, the shape of each area is assumed to be polygonal, and the range of each area is defined by coordinates indicating the latitude and longitude of each vertex of the polygon. In the example of FIG. 4C, the shape of area A is a rectangle consisting of four points, and the range of area A is defined by coordinates indicating the latitude and longitude of each vertex of the rectangle. Note that the shape of each area is not limited to a polygon. For example, the shape of each area may be circular, and the range of each area may be defined by the center point and radius of the circle.

[0067] The positioning accuracy degradation 424 indicates whether or not a degradation in positioning accuracy has occurred within the area. If a degradation in positioning accuracy has occurred, it is set to "yes", and if not, it is set to "no". If the positioning accuracy degradation is set to "yes", the degree of degradation (distance) is also set. The communication quality degradation 425 indicates whether or not a degradation in communication quality, such as a decrease in communication speed or communication interruption, has occurred within the area. If a degradation in communication quality has occurred, it is set to "yes", and if not, it is set to "no". The positioning accuracy degradation 424 and the communication quality degradation 425 are updated by the FB receiving program 213 based on the failure information included in the FB information from the administrator terminal 130.

[0068] FIG. 4D is a table showing the fault information stored in the fault information storage unit 275 shown in FIG. 2A.

[0069] The fault information stored in the fault information storage unit 275 is made up of records of an ID 431 , a fault type 432 , an FB date and time 433 , and a fault area 434 .

[0070] The ID 431 is identification information that uniquely identifies the failure that has occurred. The failure type 432 indicates the type of failure. In this embodiment, "deterioration in positioning accuracy" or "deterioration in communication quality" is set based on the FB information. The FB date and time 433 indicates the date and time when the FB information including the failure information transmitted from the administrator terminal 130 was received. The failure area 434 indicates the area where the failure has occurred.

[0071] FIG. 4E is a table showing the detection information stored in detection information storage unit 276 shown in FIG. 2A.

[0072] The detection information stored in the detection information storage unit 276 is configured by records of ID 441 , detection details 442 , detection date and time 443 , cancellation date and time 444 , heavy machine ID 445 , and notification completion 446 .

[0073] The ID 441 is identification information that uniquely identifies a detected plan deviation risk. The detection content 442 indicates the content of the detected plan deviation risk. In this embodiment, the content of the plan deviation risk includes a position deviation risk, an operation deviation risk, and a procedure deviation risk. For example, the detection content 442 is set to "position deviation," "operation deviation," or "procedure deviation." Note that, when the same plan deviation risk has different details, such as "position deviation (person)" and "position deviation (heavy equipment)," or "operation deviation (operation details)" and "operation deviation (prohibited operation)," the details are included and set in the detection content 442. The details of the position deviation risk and the operation deviation risk will be described later. The detection date and time 443 indicates the date and time when the plan deviation risk was detected. The release date and time 444 indicates the date and time when the detected plan deviation risk was resolved. The heavy equipment ID 445 indicates the identification information of the heavy equipment 110 in which the plan deviation risk was detected. The notification completion 446 indicates whether notification of the detected plan deviation risk to the manager terminal 130 has been completed.

[0074] The function of risk detection unit 256 will be described with reference to Figures 5A to 5C. Figure 5A is a diagram illustrating the function of position deviation detection unit 252 shown in Figure 2A.

[0075] As shown in the upper diagram of Figure 5A, if the position of the heavy equipment 110 at the time of work included in the operation history information is outside the work area specified in the construction plan, the position deviation detection unit 252 determines that a position deviation risk has been detected, where the heavy equipment 110 has worked in a work area that deviates from the construction plan. If the position of the heavy equipment 110 at the time of work included in the operation history information is within the work area specified in the construction plan, the position deviation detection unit 252 determines that the position deviation risk has not been detected. This allows the construction site risk detection system 1 to easily detect position deviation risks.

[0076] In the example of the upper diagram in Figure 5A, area X is a work area specified by the construction plan, heavy equipment 501 is located within work area X, and heavy equipment 502 and 503 are located outside work area X. Therefore, position deviation detection unit 252 determines that the position deviation risk has not been detected for heavy equipment 501, and determines that the position deviation risk has been detected for heavy equipment 502 and 503.

[0077] However, the example in the upper diagram of FIG. 5A illustrates a normal case in which the work area specified in the construction plan does not fall under an obstacle area. When the work area specified in the construction plan falls under an obstacle area, the position deviation detection unit 252 virtually expands the work area specified in the construction plan, as shown in the lower diagram of FIG. 5A. For example, the position deviation detection unit 252 virtually expands the work area by moving the boundary line of the work area outward by a predetermined distance. This distance may be, for example, a distance (e.g., 10 m) according to the GNSS positioning accuracy. Then, if the position of the heavy equipment 110 included in the operation history information is outside the expanded work area, the position deviation detection unit 252 determines that the position deviation risk has been detected. If the position of the heavy equipment 110 included in the operation history information is within the expanded work area, the position deviation detection unit 252 determines that the position deviation risk has not been detected. This allows the construction site risk detection system 1 to detect a position deviation risk taking obstacle areas into account, thereby preventing erroneous detection of a position deviation risk when no position deviation risk actually occurs.

[0078] In the example in the lower diagram of Figure 5A, area X has been expanded by the amount of the hatched area, and heavy machinery 504 and 505 are located within the expanded work area X, while heavy machinery 506 is located outside the expanded work area X. Therefore, position deviation detection unit 252 determines that the position deviation risk has not been detected for heavy machinery 504 and 505, and determines that the position deviation risk has been detected for heavy machinery 506.

[0079] Furthermore, the position deviation detection unit 252 detects a position deviation risk based not only on the positional relationship between the work area specified in the construction plan and the heavy equipment 110, but also on the positional relationship between the work area specified in the construction plan and the worker. If a worker is detected around the heavy equipment 110 while the heavy equipment 110 is operating, the detected worker is considered to be present in the work area where the heavy equipment 110 is operating. If the work process in the construction plan corresponds to a mixed-use operation, the presence of a worker in the work area is assumed in advance. However, if the work process in the construction plan does not correspond to a mixed-use operation, the presence of a worker in the work area is not assumed in advance. Similarly, if the work process in the construction plan does not correspond to a mixed-use operation, the absence of a worker in the work area is assumed in advance. However, if the work process in the construction plan does not correspond to a mixed-use operation, the presence of a worker in the work area is not assumed in advance. If the designation of mixed-use work in the construction plan does not match the presence or absence of workers in the work area, there is a risk that workers will work in a work area that deviates from the construction plan.

[0080] Therefore, the position deviation detection unit 252 determines that a position deviation risk, indicating the risk that a worker has worked in a work area deviating from the construction plan, has been detected if the work process specified in the construction plan does not involve human-involved work and the human detection information included in the operation history information indicates that a worker has been detected, or if the work process specified in the construction plan involves human-involved work and the human detection information included in the operation history information indicates that a worker has not been detected. On the other hand, the position deviation detection unit 252 determines that a position deviation risk has not been detected if the work process specified in the construction plan involves human-involved work and the human detection information included in the operation history information indicates that a worker has been detected, or if the work process specified in the construction plan does not involve human-involved work and the human detection information included in the operation history information indicates that a worker has not been detected. This allows the construction site risk detection system 1 to easily detect not only position deviation risks related to the heavy equipment 110 but also position deviation risks related to workers.

[0081] In addition, even when determining whether or not a position deviation risk related to a worker has been detected, if the work area falls under an obstacle area, the position deviation detection unit 252 virtually enlarges the work area and makes a determination, as shown in the lower diagram of Figure 5A.

[0082] When a position deviation risk is detected, the position deviation detection unit 252 updates the detection information stored in the detection information storage unit 276, including the breakdown of the position deviation risk. That is, when a position deviation risk related to heavy machinery 110 is detected, the position deviation detection unit 252 updates the detection information by setting the detection content 442 in FIG. 4E to "position deviation (heavy machinery)." When a position deviation risk related to a worker is detected, the position deviation detection unit 252 updates the detection information by setting the detection content 442 in FIG. 4E to "position deviation (person)."

[0083] FIG. 5B is a diagram illustrating the function of the task deviation detection unit 253 shown in FIG. 2A.

[0084] When the work content specified in the construction plan does not match the work content at the time of work performed by the heavy equipment 110 included in the operation history information, the work deviation detection unit 253 determines that a work deviation risk has been detected, which indicates the risk that the heavy equipment 110 performed work content that deviates from the construction plan. This allows the construction site risk detection system 1 to easily detect work deviation risks.

[0085] Furthermore, as shown in FIG. 5B, the work deviation detection unit 253 is preset with prohibited operation information indicating operation information of the heavy equipment 110 that is prohibited when performing work content specified in the construction plan. In the example of FIG. 5B, for example, when the work content specified in the construction plan is "lifting work," "sharp turn operation" is set as the prohibited operation information. Even if the work content specified in the construction plan matches the work content performed by the heavy equipment 110 included in the operation history information, the work deviation detection unit 253 determines that the work deviation risk has been detected if the operation information included in the operation history information includes prohibited operation information. If the work content specified in the construction plan matches the work content performed by the heavy equipment 110 included in the operation history information and the operation information included in the operation history information does not include prohibited operation information, the work deviation detection unit 253 determines that the work deviation risk has not been detected. This allows the construction site risk detection system 1 to detect risks due to prohibited operations that occur during work content specified in the construction plan, thereby enabling precise detection of work deviation risks.

[0086] When a work deviation risk is detected, the work deviation detection unit 253 updates the detection information stored in the detection information storage unit 276, including a breakdown of the work deviation risk. That is, when the work deviation detection unit 253 detects a work deviation risk based on a discrepancy between the work content specified in the construction plan and the work content of the heavy equipment 110, the work deviation detection unit 253 updates the detection information by setting the detection content 442 in FIG. 4E to "work deviation (work content)." When the work deviation detection unit 253 detects a work deviation risk based on the fact that the operation information of the heavy equipment 110 includes prohibited operation information, the work deviation detection unit 253 updates the detection information by setting the detection content 442 in FIG. 4E to "position deviation (prohibited operation)."

[0087] FIG. 5C is a diagram illustrating the function of procedure deviation detection unit 254 shown in FIG. 2A.

[0088] The procedure deviation detection unit 254 determines that a procedure deviation risk has been detected when the operation procedure indicated by the rule corresponding to the work content specified in the construction plan does not match the operation procedure during work by the heavy equipment 110 included in the operation history information. The procedure deviation detection unit 254 determines that a procedure deviation risk has not been detected when the operation procedure indicated by the rule corresponding to the work content specified in the construction plan matches the operation procedure during work by the heavy equipment 110 included in the operation history information. This enables the construction site risk detection system 1 to easily detect a procedure deviation risk.

[0089] 5C, the work content specified in the construction plan is "movement," and the operational procedure indicated by the rule corresponding to "movement" is "turn on the engine key → fasten the seat belt → sound the horn → wait until a certain time has passed → operate the crawler." In this case, if the operational procedure during work of the heavy equipment 110 included in the operation history information is, for example, a procedure in which "sound the horn" is followed by "operation of the crawler" without "waiting until a certain time has passed," the procedure deviation detection unit 254 determines that a risk of procedural deviation has been detected.

[0090] 6 to 8C, the processing performed by the server device 100 will be described. Fig. 6 is a flowchart showing the processing performed by the server device 100 when operation history information is received from the heavy machinery 110. The server device 100 performs the processing shown in Fig. 6 every time it receives operation history information from the heavy machinery 110.

[0091] In step S601, the operation history setting unit 231 of the server device 100 stores the received operation history information of the heavy equipment 110 in the operation history storage unit 272. The operation history information includes information related to the position, work content, and operation procedure of the heavy equipment 110, as well as operation information, status information, and human detection information. Thereafter, the server device 100 ends the processing shown in FIG.

[0092] 7 is a flowchart showing the processing performed by the server device 100 when FB information is received from the administrator terminal 130. The server device 100 performs the processing shown in FIG.

[0093] In step S701, the FB setting unit 241 of the server device 100 checks the received FB information and updates the fault information stored in the fault information storage unit 275.

[0094] In step S702, the FB setting unit 241 identifies an area in which the same failure has occurred multiple times within a predetermined period of time in the failure information stored in the failure information storage unit 275. Then, the FB setting unit 241 updates the "degradation in positioning accuracy 424" and "degradation in communication quality 425" of the map information stored in the map storage unit 274 for the identified area. After that, the server device 100 ends the processing shown in FIG. 7.

[0095] Fig. 8A is a flowchart showing the processing performed by the position deviation detection unit 252 of the server device 100. The position deviation detection unit 252 periodically performs the processing shown in Fig. 8A.

[0096] In step S801, the position deviation detection unit 252 checks the work area that each heavy machine 110 is responsible for at the current time from the construction plan stored in the construction plan storage unit 271.

[0097] In step S802, the position deviation detection unit 252 checks, based on the map information stored in the map storage unit 274, whether each work area corresponds to an obstacle area.

[0098] In step S803, if the position deviation detection unit 252 determines that each work area is an obstacle area, the process proceeds to step S804. If the position deviation detection unit 252 determines that each work area is not an obstacle area, the process proceeds to step S805.

[0099] In step S804, the position deviation detection unit 252 confirms the position of the heavy equipment 110 responsible for each work area that falls under the obstacle area, based on the operation history information stored in the operation history storage unit 272. Then, the position deviation detection unit 252 virtually enlarges each work area and determines whether a position deviation risk has been detected for the heavy equipment 110 responsible for each work area. If a position deviation risk has not been detected, the position deviation detection unit 252 sets the release date and time 444 if it is not set in the detection information stored in the detection information storage unit 276. If a position deviation risk has been detected, the position deviation detection unit 252 adds a new record if the release date and time 444 is set in the detection information stored in the detection information storage unit 276. When adding a new record, the release date and time 444 is left blank. After that, the position deviation detection unit 252 proceeds to step S806.

[0100] In step S805, the position deviation detection unit 252 checks the positions of the heavy machinery 110 in charge of each work area that does not fall under an obstacle area, from the operation history information stored in the operation history storage unit 272. Then, the position deviation detection unit 252 determines whether or not a position deviation risk has been detected for the heavy machinery 110 in charge of each work area. Then, the position deviation detection unit 252 updates the detection information stored in the detection information storage unit 276, similar to step S804.

[0101] In step S806, the position deviation detection unit 252 confirms whether the current work process handled by each heavy machine 110 corresponds to a work involving humans, and also confirms whether the human detection information included in the operation history information of each heavy machine 110 indicates that a worker has been detected. Then, the position deviation detection unit 252 confirms whether the designation of a work involving humans in the construction plan is consistent with the presence or absence of worker detection in the human detection information, and determines whether a position deviation risk has been detected. Then, as in step S804, the position deviation detection unit 252 updates the detection information stored in the detection information storage unit 276. Thereafter, the position deviation detection unit 252 ends the processing shown in FIG. 8A.

[0102] Fig. 8B is a flowchart showing the processing performed by the activity deviation detection unit 253 of the server device 100. The activity deviation detection unit 253 periodically performs the processing shown in Fig. 8B.

[0103] In step S811, the work deviation detection unit 253 checks the work content that each heavy machine 110 is in charge of at the current time from the construction plan stored in the construction plan storage unit 271.

[0104] In step S812, the work deviation detection unit 253 checks the work content of each heavy equipment 110 from the operation history information stored in the operation history storage unit 272. Then, the work deviation detection unit 253 determines whether or not a work deviation risk has been detected for each heavy equipment 110. If a work deviation risk has not been detected, the work deviation detection unit 253 sets the release date and time 444 if it is not set in the detection information stored in the detection information storage unit 276. If a work deviation risk has been detected, the work deviation detection unit 253 adds a new record if the release date and time 444 is set in the detection information stored in the detection information storage unit 276. When adding a new record, the release date and time 444 is left blank.

[0105] In step S813, the work deviation detection unit 253 checks the operation information of each heavy machine 110 from the operation history information stored in the operation history storage unit 272. Then, the work deviation detection unit 253 checks whether the operation information of each heavy machine 110 includes prohibited operation information, and determines whether a work deviation risk has been detected. Then, similar to step S812, the work deviation detection unit 253 updates the detection information stored in the detection information storage unit 276. Thereafter, the work deviation detection unit 253 ends the processing shown in FIG. 8B.

[0106] 8C is a flowchart showing the processing performed by the procedure deviation detecting unit 254 of the server device 100. The procedure deviation detecting unit 254 periodically performs the processing shown in FIG. 8C.

[0107] In step S821, the procedure deviation detection unit 254 checks the work content that each heavy equipment 110 is responsible for at the current time from the construction plan stored in the construction plan memory unit 271, and checks the rules of the operating procedures corresponding to the work content.

[0108] In step S822, the procedure deviation detection unit 254 checks the operating procedures for the work content of each heavy machinery 110 from the operation history information stored in the operation history storage unit 272. Then, the procedure deviation detection unit 254 determines whether a procedure deviation risk has been detected for each heavy machinery 110. If a procedure deviation risk has not been detected, the procedure deviation detection unit 254 sets the release date and time 444 if it is not set in the detection information stored in the detection information storage unit 276. If a procedure deviation risk has been detected, the procedure deviation detection unit 254 adds a new record if the release date and time 444 is set in the detection information stored in the detection information storage unit 276. When adding a new record, the release date and time 444 is left blank. Thereafter, the procedure deviation detection unit 254 ends the processing shown in FIG. 8C.

[0109] As described above, the construction site risk detection system 1 according to the first embodiment is a system that includes heavy equipment 110 operating at the construction site 150, a manager terminal 130 that is a terminal for the site manager of the construction site 150, and a server device 100 that is communicably connected to each of the heavy equipment 110 and the manager terminal 130, and detects risks that may compromise the safety of the construction site 150. The heavy equipment 110 transmits operation history information to the server device 100, including the location of the heavy equipment 110 during work, the work content of the heavy equipment 110 during work, and the operating procedures performed when the heavy equipment 110 was working. The server device 100 has a construction plan storage unit 271 that stores a construction plan for the construction site 150, a rule storage unit 273 that stores rules indicating the operating procedures of the heavy equipment 110 to be performed for the work content of each work process that makes up the construction plan, an operation history storage unit 272 that stores operation history information transmitted from the heavy equipment 110, a risk detection unit 256 that detects risks based on the construction plan, the operation history information, and the rules, and a notification unit 255 that notifies the administrator terminal 130 of the detection results of the risk detection unit 256. The construction plan specifies the work content of each work process, the work area of ​​each work process, and the identification information of the heavy equipment 110 in charge of each work process. The risk detection unit 256 includes a position deviation detection unit 252 that detects a position deviation risk indicating the risk that the heavy equipment 110 has worked in a work area that deviates from the construction plan, based on the identification information of the work area and heavy equipment 110 specified in the construction plan and the position of the heavy equipment 110 included in the operation history information, an operation deviation detection unit 253 that detects an operation deviation risk indicating the risk that the heavy equipment 110 has worked with operation content that deviates from the construction plan, based on the work content specified in the construction plan and the work content of the heavy equipment 110 included in the operation history information, and a procedure deviation detection unit 254 that detects a procedure deviation risk indicating the risk that the heavy equipment 110 has worked with an operation procedure that deviates from the construction plan, based on rules corresponding to the work content specified in the construction plan and the operation procedure for the heavy equipment 110 included in the operation history information. The risk detection unit 256 outputs at least one detection result of the detected position deviation risk, operation deviation risk, and procedure deviation risk.

[0110] As a result, the construction site risk detection system 1 can detect not only the risk of position deviation but also the risk of work deviation and the risk of procedure deviation, and can detect various risks that could result from deviations from the construction plan and impair the safety of the construction site 150. Therefore, the construction site risk detection system 1 can enable the site manager to point out improvements during patrols, etc., and can effectively improve the safety of the construction site 150.

[0111] [Second embodiment] A second embodiment of the present invention will be described with reference to Fig. 9. In the second embodiment, the description of the same components as those in the first embodiment will be omitted.

[0112] The configuration of the construction site risk detection system 1 according to the second embodiment is the same as that of the first embodiment. The hardware configuration of the server device 100 according to the second embodiment is the same as that of the first embodiment. The software configuration of the server device 100 according to the second embodiment is the same as that of the first embodiment, except for the function of the notification unit 255. The notification unit 255 according to the second embodiment notifies the detection result of the risk detection unit 256 not only to the manager terminal 130 but also to the heavy equipment 110.

[0113] FIG. 9 is a diagram showing the configuration of a heavy machine 110 according to the second embodiment.

[0114] The heavy machine 110 according to the second embodiment differs from the heavy machine 110 according to the first embodiment in that an avoidance operation determination device 291 is added as a device connected to the network 287. The avoidance operation determination device 291 determines an avoidance operation in accordance with the detection result of the risk detection unit 256 notified by the notification unit 255 of the server device 100, and notifies at least one of the control device 281 and the alarm device 284. For example, if the detection result of the risk detection unit 256 indicates that a position deviation risk related to a worker has been detected, the avoidance operation determination device 291 notifies the alarm device 284 to issue an alarm to workers around the heavy machine 110. For example, if the detection result of the risk detection unit 256 indicates that a procedure deviation risk, such as a seat belt not being fastened, has been detected, the avoidance operation determination device 291 notifies the alarm device 284 to issue an alarm to workers aboard the heavy machine 110, and notifies the control device 281 to limit the output of the power source of the heavy machine 110.

[0115] Additionally, the avoidance operation determination device 291 may output, in addition to the notification to at least one of the control device 281 and the alarm device 284, an instruction to the information recording device 285 to leave a detailed record.

[0116] The warning device 284 according to the second embodiment issues a warning based on a notification from the avoidance operation determination device 291. That is, when the detection result of the risk detection unit 256 notified by the notification unit 255 of the server device 100 indicates that a risk has been detected, the warning device 284 according to the second embodiment issues a warning in accordance with the detected risk. As a result, the construction site risk detection system 1 according to the second embodiment can not only detect a plan deviation risk in the server device 100 and notify the manager terminal 130, but also provide feedback to the heavy equipment 110, and can directly cause the worker on board the heavy equipment 110 and surrounding workers to take action to avoid the risk.

[0117] The control device 281 according to the second embodiment limits the output of the power source of the heavy equipment 110 based on the notification from the avoidance operation determination device 291. That is, when the detection result of the risk detection unit 256 notified by the notification unit 255 of the server device 100 indicates that a risk has been detected, the control device 281 according to the second embodiment limits the output of the power source of the heavy equipment 110 in accordance with the detected risk. As a result, the construction site risk detection system 1 according to the second embodiment can not only detect a plan deviation risk in the server device 100 and notify the manager terminal 130, but also provide feedback to the heavy equipment 110, and can directly cause the heavy equipment 110 to perform an operation to avoid the risk.

[0118] The present invention is not limited to the above-described embodiments and includes various modifications. For example, the above-described embodiments have been described in detail to clearly explain the present invention, and are not necessarily limited to those including all of the components described. Furthermore, some of the components of one embodiment can be replaced with components of another embodiment, and components of another embodiment can be added to components of one embodiment. Furthermore, some of the components of each embodiment can be added, deleted, or replaced with other components.

[0119] Furthermore, the above-described components, functions, processing units, or processing means may be partially or entirely implemented in hardware, for example, by designing them as integrated circuits. The above-described components or functions may also be implemented in software, with a processor interpreting and executing a program that implements each function. Information such as the programs, tables, or files that implement each function may be stored in a storage device such as a memory, a hard disk, or an SSD (solid state drive), or in a storage medium such as an IC card, SD card, or DVD.

[0120] In addition, the control lines and information lines shown are those that are considered necessary for the explanation, and do not necessarily show all the control lines and information lines in the product. In reality, it can be assumed that almost all components are interconnected. [Explanation of symbols]

[0121] 1...construction site risk detection system, 100...server device, 110...heavy machinery, 130...administrator terminal, 150...construction site, 211...construction plan input program, 212...operation history input program, 213...FB receiving program (feedback receiving unit), 252...position deviation detection unit, 253...work deviation detection unit, 254...procedure deviation detection unit, 255...notification unit, 256...risk detection unit, 271...construction plan memory unit, 272...operation history memory unit, 273...rule memory unit, 281...control unit, 284...alarm device

Claims

1. A server device of a construction site risk detection system that detects risks of compromising safety at a construction site where heavy machinery is operating, A construction plan storage unit that stores a construction plan for the construction site; an operation history storage unit that stores operation history information of the heavy equipment transmitted from the heavy equipment; a rule storage unit that stores rules regarding the operation procedures of the heavy machinery to be performed for the work content of each work process that constitutes the construction plan; a risk detection unit that detects the risk based on the construction plan, the operation history information, and the rules; A notification unit that notifies the detection result of the risk detection unit to a terminal of a site manager of the construction site, The construction plan specifies the work content of each work process, the work area of ​​each work process, and identification information of the heavy machinery in charge of each work process, The operation history information of the heavy equipment includes the location of the heavy equipment when it was working, the work content of the heavy equipment when it was working, and the operation procedure performed when it was working, The risk detection unit a position deviation detection unit that detects a position deviation risk indicating a risk that the heavy equipment has worked in the work area that deviates from the construction plan, based on the work area and identification information of the heavy equipment specified in the construction plan and the position of the heavy equipment included in the operation history information; a work deviation detection unit that detects a work deviation risk indicating a risk that the heavy equipment has performed work content that deviates from the construction plan based on the work content specified in the construction plan and the work content of the heavy equipment included in the operation history information; a procedure deviation detection unit that detects a procedure deviation risk indicating a risk that the heavy equipment has performed an operation procedure that deviates from the construction plan, based on the rule corresponding to the work content specified in the construction plan and the operation procedure of the heavy equipment included in the operation history information, outputting at least one of the detection results of the position deviation risk, the work deviation risk, and the procedure deviation risk; A server device for a construction site risk detection system.

2. The position deviation detection unit determines that the position deviation risk has been detected when the position of the heavy equipment included in the operation history information is outside the work area specified in the construction plan.

2. A server device for the construction site risk detection system according to claim 1.

3. A feedback receiving unit is further provided to receive feedback information including information on a fault area where the positioning accuracy or communication quality is lower than a standard at the construction site, The position deviation detection unit If the work area specified in the construction plan corresponds to the obstacle area, the work area specified in the construction plan is virtually enlarged; If the position of the heavy equipment included in the operation history information is outside the expanded work area, it is determined that the risk of deviation from the position has been detected.

3. A server device for the construction site risk detection system according to claim 2.

4. The construction plan further includes information indicating whether the work process corresponds to a mixed work in which the heavy machinery and workers work together, The operation history information of the heavy equipment further includes human detection information indicating whether or not a worker was detected around the heavy equipment while the heavy equipment was operating, The position deviation detection unit The work process specified in the construction plan does not correspond to the work involving humans, and the human detection information included in the operation history information indicates that the worker has been detected, or If the work process specified in the construction plan corresponds to the human-mixed work, and the human detection information included in the operation history information indicates that the worker was not detected, It is determined that a position deviation risk indicating a risk that the worker has worked in the work area deviating from the construction plan has been detected.

3. A server device for the construction site risk detection system according to claim 2.

5. The work deviation detection unit determines that the work deviation risk has been detected when the work content specified in the construction plan does not match the work content of the heavy equipment included in the operation history information.

2. A server device for the construction site risk detection system according to claim 1.

6. The work deviation detection unit is configured to preset prohibited operation information indicating operation information of the heavy equipment that is prohibited when performing the work content specified in the construction plan, The operation history information of the heavy equipment further includes operation information of the heavy equipment during work, The work deviation detection unit determines that the work deviation risk has been detected when the operation information included in the operation history information includes the prohibited operation information, even if the work content specified in the construction plan and the work content of the heavy equipment included in the operation history information match.

6. A server device for the construction site risk detection system according to claim 5.

7. The procedure deviation detection unit determines that the procedure deviation risk has been detected when the operation procedure indicated by the rule corresponding to the work content specified in the construction plan does not match the operation procedure of the heavy equipment included in the operation history information.

2. A server device for the construction site risk detection system according to claim 1.

8. A construction site risk detection system that includes heavy machinery operating at a construction site, a terminal of a site manager of the construction site, and a server device communicably connected to each of the heavy machinery and the terminal, and detects risks that may compromise the safety of the construction site, The heavy equipment transmits operation history information to the server device, the operation history information including the location of the heavy equipment when working, the work content of the heavy equipment when working, and the operation procedure performed when working with the heavy equipment; The server device A construction plan storage unit that stores a construction plan for the construction site; a rule storage unit that stores rules regarding the operation procedures of the heavy machinery to be performed for the work content of each work process that constitutes the construction plan; an operation history storage unit that stores the operation history information transmitted from the heavy machinery; a risk detection unit that detects the risk based on the construction plan, the operation history information, and the rules; a notification unit that notifies the terminal of a detection result of the risk detection unit, The construction plan specifies the work content of each work process, the work area of ​​each work process, and identification information of the heavy machinery in charge of each work process, The risk detection unit a position deviation detection unit that detects a position deviation risk indicating a risk that the heavy equipment has worked in the work area that deviates from the construction plan, based on the work area and identification information of the heavy equipment specified in the construction plan and the position of the heavy equipment included in the operation history information; a work deviation detection unit that detects a work deviation risk indicating a risk that the heavy equipment has performed work content that deviates from the construction plan based on the work content specified in the construction plan and the work content of the heavy equipment included in the operation history information; a procedure deviation detection unit that detects a procedure deviation risk indicating a risk that the heavy equipment has performed an operation procedure that deviates from the construction plan, based on the rule corresponding to the work content specified in the construction plan and the operation procedure of the heavy equipment included in the operation history information, outputting at least one of the detection results of the position deviation risk, the work deviation risk, and the procedure deviation risk; A construction site risk detection system characterized by:

9. The notification unit of the server device notifies the heavy machinery of the detection result of the risk detection unit, The heavy machinery has an alarm device that issues an alarm, When the detection result of the risk detection unit notified by the notification unit indicates that the risk has been detected, the alarm device issues the alarm in response to the detected risk.

9. The construction site risk detection system according to claim 8.

10. The heavy equipment has a control device that controls the operation of the heavy equipment, When the detection result notified by the notification unit indicates that the risk has been detected, the control device limits the output of the power source of the heavy equipment in accordance with the detected risk.

10. The construction site risk detection system according to claim 9.

Images