Safety management system and safety management method

Abstract

To ensure that safety management of inspection work on various apparatuses such as elevators can be carried out appropriately depending on a work content and a worker.SOLUTION: A safety management system comprises: an evaluation score calculation unit 106 that calculates safety evaluation scores individually for a worker and inspectors other than the worker when monitoring inspection work of various apparatuses such as elevators by the worker; and a work continuation determination unit 109 that compares the total scores of the safety evaluation scores individually calculated by the evaluation score calculation unit 106 with a preset threshold value to determine whether or not the worker can continue working and makes a confirmation request based on a determination result.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a safety management system and a safety management method. [Background technology]

[0002] When inspecting or maintaining elevators and other moving parts, it is important to ensure the safety of the workers performing the work in order to prevent accidents. For example, when inspecting an elevator, in order to prevent improper operation during inspection, when switching from normal mode (high-speed operation) to maintenance mode (low-speed operation) at the start of maintenance work, the work content is read out and a checklist is checked. In addition, when multiple people work together on the same elevator, they often repeat the details of the work to each other to ensure mutual safety. Also, when the workers are far apart, they use information terminals to confirm the details by phone.

[0003] In response to this, a technique described in Patent Document 1 has been proposed to further improve safety. That is, Patent Document 1 describes a technology that uses a microphone worn by a worker, an acceleration / angular velocity sensor, and elevator control information to estimate the work content and actions of the worker, and issues an alarm to the worker and an information center if there is a problem. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] International Publication No. 2020 / 016913 Summary of the Invention [Problem to be solved by the invention]

[0005] Patent Document 1 describes using sensors and other devices to estimate the work content and movements and issue an alarm, but simply issuing an alarm often requires time to determine whether the work can continue. For example, even when the technology described in Patent Document 1 is applied, as mentioned in the Background Art section, determining whether the work can continue requires multiple people to check the work and situation. Conventional methods require information to be transmitted to each other by repeating commands or communicating via communication terminals to ensure that the worker's status is known, which can be time-consuming. As a result, elevators are often down for longer periods of time due to maintenance work, reducing user convenience.

[0006] Furthermore, even if a movement estimated using a sensor is judged to be relatively large and dangerous, depending on the work content and work location, the movement may not be dangerous. Therefore, if safety is always estimated under the same conditions, it may not be appropriate to issue an alarm.

[0007] An object of the present invention is to provide a safety management system and a safety management method that can appropriately manage safety according to the work content, the worker, etc. when a worker performs inspection work. [Means for solving the problem]

[0008] In order to solve the above problems, for example, the configurations described in the claims are adopted. The present application includes multiple means for solving the above-mentioned problems, and one example thereof is a safety management system that monitors inspection work performed by workers, and includes an evaluation point calculation unit that calculates safety evaluation points individually for workers and inspectors other than workers, and a work continuation determination unit that compares the total number of safety evaluation points individually calculated by the evaluation point calculation unit with a preset threshold value to determine whether the worker can continue working, and makes a confirmation request based on the determination result. [Effects of the Invention]

[0009] According to the present invention, the decision on whether to continue work can be made appropriately based on the work content, the worker's evaluation, etc., so that safety management can be performed appropriately according to the situation at the time. In addition, because the decision on whether to continue work can be made efficiently, the elevator downtime due to maintenance work can be shortened, improving convenience for users. Problems, configurations, and effects other than those described above will become apparent from the following description of the embodiments. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a configuration diagram showing an example of a system configuration according to an embodiment of the present invention; [Figure 2] 1 is a diagram showing an example of an elevator configuration and a worker position according to an embodiment of the present invention; [Figure 3] FIG. 2 is a configuration diagram showing an example of hardware of each terminal according to an embodiment of the present invention. [Figure 4] FIG. 10 is a diagram showing an example of evaluation points according to an embodiment of the present invention. [Figure 5] 10 is a flowchart illustrating an example of safety management processing according to an embodiment of the present invention. [Figure 6] FIG. 1 is a diagram showing an example (example 1) of a safety management processing state according to an embodiment of the present invention. [Figure 7] FIG. 10 is a diagram showing an example (example 2) of a safety management processing state according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0011] A safety management system and a safety management method according to one embodiment of the present invention (hereinafter referred to as "this embodiment") will be described below with reference to the accompanying drawings.

[0012] [Safety Management System Configuration] FIG. 1 shows the configuration of the safety management system of this example. The safety management system of this example is a system that manages the safety of workers during inspection work on elevators, which are an example of elevators. However, applying the safety management system of this example to elevators is just one example, and it may also be applied to safety management during inspection work on other elevators (such as staircase elevators) or equipment other than elevators.

[0013] The safety management system of this example comprises a worker terminal 10 carried by a worker performing inspection work, and a monitoring device 100. Furthermore, if there is more than one worker, the system also comprises a co-worker terminal 20 carried by another co-worker. If there is more than one co-worker, there will be more than one co-worker terminal 20. Furthermore, the system also comprises a remote inspector terminal 30 operated by a remote inspector who remotely monitors the work of the workers.

[0014] The worker terminal 10, co-worker terminal 20, remote inspector terminal 30, and monitoring device 100 are connected to each other via a predetermined network NW so that data can be transferred between them. An elevator control panel 90, which is a control device for the elevator that performs the inspection work, is also connected to the network NW, and the monitoring device 100 monitors the status of the elevator control panel 90. The network NW can be various communication networks using short-range wireless communication such as wireless LAN (Local Area Network), wireless telephone lines, etc. When transferring data via the network NW, in addition to transferring data directly between terminals, data may also be transferred by applying communication technology such as the Internet.

[0015] The worker terminal 10 and the co-worker terminal 20 may be, for example, a smartphone, a tablet terminal, or a mobile communication terminal called smart glasses. For example, the worker terminal 10 has a detection unit 11 including a camera, a microphone, an acceleration sensor, an angular velocity sensor, etc. The control unit 12 transmits data (image data, audio data, sensor data) detected by the detection unit 11 to the monitoring device 100 via the wireless communication unit 14 and the network NW. The worker terminal 10 also has a display unit 13, which can display instructions from the monitoring device 100.

[0016] The camera and microphone serving as the detection unit 11 may be built into the worker terminal 10, which is a smartphone, or may be a camera and microphone attached to the worker's head, arm, helmet, etc. In this case, the image data and audio data obtained by the camera and microphone are transmitted from the worker terminal 10 to the monitoring device 100 via short-range wireless communication. In addition, image data and audio data obtained by a camera, microphone, etc. as the detection unit 11 may be subjected to image processing and audio processing within the worker terminal 10, and detection information of a specific object or specific audio may be transmitted to the monitoring device 100.

[0017] The co-worker terminal 20 is configured in the same manner as the worker terminal 10. When a smartphone, tablet terminal, or smart glasses is used as the worker terminal 10 or the co-worker terminal 20, an application program for the safety management system of this example is installed on the terminal. Then, each worker starts up this application program at the start of inspection work and performs an operation to start the work. During work, the worker terminal 10 and the co-worker terminal 20 perform a process of acquiring the detection data obtained by the detection unit 11 and a process of transmitting the acquired data to the monitoring device 100 .

[0018] The remote inspector terminal 30 is a computer terminal operated by an employee of the sales office of the company performing the inspection work, an employee of the elevator remote control center, or an employee of the elevator safety control center. The remote inspector terminal 30 is equipped with a display unit that displays the monitoring status and the like, and an input unit that inputs instructions and the like. Alternatively, the remote inspector terminal 30 may also be a smartphone or tablet terminal carried by these employees. Furthermore, the remote inspector terminal 30 may also be a terminal such as a smartphone or tablet terminal carried by another worker at the same elevator inspection site. The remote checker terminal 30 displays the determination results and the like from the monitoring device 100. The remote checker terminal 30 also transmits instructions and the like relating to the work to the worker terminal 10 and the co-worker terminal 20.

[0019] The monitoring device 100 is a computer that performs monitoring work as the safety management system of this example, and includes a work plan database 101, a current day work history database 102, a wireless communication unit 103, a work estimation unit 104, a work evaluation score determination unit 105, and an evaluation score calculation unit 106. The monitoring device 100 also includes a basic evaluation score setting unit 107, a work continuation confirmation necessity determination unit 108, a work continuation determination unit 109, and a display unit 110. The monitoring device 100 may be configured as a device dedicated to performing monitoring processing, or any one of the worker terminal 10, co-worker terminal 20, and remote checker terminal 30 may also function as the monitoring device 100. Alternatively, the monitoring device 100 may be configured as a server connected to the network NW. When the monitoring device 100 is configured as a server, the display unit 110 is not required for the monitoring device 100.

[0020] The work plan database 101 stores elevator inspection work plan data. The inspection work plan data includes details about the inspection work, such as the installation location of the elevator to be inspected, the model and installation status of the elevator, the date and time of the inspection, the inspection location, and replacement parts. The inspection work plan data also includes data on the number of people who will perform the inspection work and data identifying the person who will inspect the work (remote inspector terminal 30).

[0021] The current day work history database 102 stores data on the work history during inspection work. The work history during inspection work is created based on the operation history during work transmitted from the elevator control panel 90 and data transmitted from the worker terminal 10 and the co-worker terminal 20. The wireless communication unit 103 communicates with the worker terminal 10, the co-worker terminal 20, the remote checker terminal 30, and the elevator control panel 90 via the network NW.

[0022] The work estimation unit 104 estimates which work is being performed based on the operation history during work transmitted from the elevator control panel 90 and data transmitted from the worker terminal 10 and the co-worker terminal 20. For example, the work estimation unit 104 detects that the elevator operation mode is changed from normal mode to maintenance mode on the elevator control panel 90, and detects the start of inspection work. This maintenance mode is a mode in which the operating speed of the car is slower than in normal mode, and is also a mode in which operations are permitted on maintenance operation panels on top of the car, in the pit, etc.

[0023] Furthermore, the work estimation unit 104 estimates the location of each worker while they are working, based on data from the worker terminal 10 and the co-worker terminal 20. The work status and worker locations estimated by the work estimation unit 104 are registered in the day's work history database 102.

[0024] The task evaluation score determination unit 105 determines the task evaluation score of each worker based on the worker's location, etc. Specific examples of setting task evaluation scores will be described later. The evaluation point calculation unit 106 executes an evaluation point calculation process to calculate a safety evaluation point for the worker or the checker by adding the task evaluation point determined by the task evaluation point determination unit 105 and a basic evaluation point set by a basic evaluation point setting unit 107, which will be described next. The safety evaluation points calculated by the evaluation point calculation unit 106 are supplied to the task continuation determination unit 109.

[0025] The basic evaluation point setting unit 107 sets basic evaluation points for workers and checkers based on the work plan data stored in the work plan database 101. As the basic evaluation point, for example, a relatively high point is set for checkers, and a relatively low point is set for workers. Furthermore, the basic evaluation point of each worker may be changed based on the work experience of each worker. In other words, a worker with a lot of work experience and high work skills may be assigned a high basic evaluation point. Conversely, a worker with little work experience may be assigned a low basic evaluation point.

[0026] The work continuation confirmation necessity determination unit 108 determines whether or not the inspection work currently being performed requires confirmation of work continuation, based on the work estimated by the work estimation unit 104. For example, the work continuation confirmation necessity determination unit 108 determines that work continuation confirmation is necessary when work is being performed in a location where safety confirmation is required, such as work on top of an elevator car or work in a pit. In addition, the work continuation confirmation necessity determination unit 108 determines that work continuation confirmation is not necessary when work does not require safety confirmation, such as inspecting an elevator landing or a control panel inside an elevator car. These work continuation confirmation necessity determination results are sent to the work continuation determination unit 109.

[0027] When confirmation of work continuation is required, the work continuation determination unit 109 acquires the current work content from the work estimation unit 104. Furthermore, the work continuation determination unit 109 acquires the safety evaluation points of the worker and the checker from the evaluation point calculation unit 106 and determines whether or not to continue the work by comparing them with a threshold. In this example, the work continuation determination unit 109 determines whether or not to continue the work for each current work content by comparing the safety evaluation points of specific multiple people with a threshold. Specific determination examples will be described later.

[0028] The determination result of the work continuation determination unit 109 is displayed on the display unit 110. Furthermore, based on the determination result of the work continuation determination unit 109, the monitoring device 100 instructs the worker terminal 10 and the co-worker terminal 20 to perform a safety check, and causes the display unit 110 to display the response results from each terminal 10, 20. The display unit 110 may be the display unit of the remote verifyer terminal 30.

[0029] [Elevator schematic configuration] Figure 2 shows the general configuration of the elevator used for inspection work. As shown in Figure 2, the elevator has a car 202 arranged in a hoistway 201, and the car 202 moves when a main rope 203 is driven by a hoisting machine 204. A weight 205 is attached to the main rope 203, and the weight of the car 202 is balanced.

[0030] 2 shows a state in which a first worker a is sitting on top of the car 202 and a second worker b is sitting inside the car 202. Worker a has a worker terminal 10, and worker b has a co-worker terminal 20. In such a work situation, the work management system of this example manages the safety of worker a and worker b.

[0031] [Example of hardware configuration for each device] 3 shows an example of the hardware configuration of the worker terminal 10, the co-worker terminal 20, the remote confirmer terminal 30, and the monitoring device 100. Here, the configuration of the monitoring device 100 is shown, but the hardware configurations of the other terminals 10, 20, and 30 are similar.

[0032] The monitoring device 100 includes a CPU (Central Processing Unit) 100a, a memory 100b, a storage 100c, an input unit 100d, and a communication interface 100e, all of which are connected to one another via a bus line. The monitoring device 100 also includes a display unit 110 and a camera 100f. However, if the monitoring device 100 is configured as a dedicated terminal separate from the worker terminal 10, it may not include the display unit 110 or the camera 100f.

[0033] The CPU 100a executes a program stored in the memory 100b or the storage 100c. In this example, the CPU 100a executes a program for elevator safety management. The memory 100b is configured as, for example, a RAM (Random Access Memory), and stores computer programs and calculation result data, and also provides the CPU 100a with a work area required for each process.

[0034] In this example, when the CPU 100a executes a program, the processing units of the monitoring device 100 shown in Fig. 1 are configured in a work area in the memory 100b. That is, the work area in the memory 100b is configured with an activity estimation unit 104, an evaluation score calculation unit 106, an activity continuation determination unit 109, and the like.

[0035] The storage 100c is configured with a hard disk drive (HDD) or a solid state drive (SSD), and stores computer programs as well as data required for calculations and calculation result data. For example, the storage 100c stores data such as the work plan database 101 and the current day work history database 102 shown in FIG. The input unit 100d receives input of operations performed by the operator of the monitoring device 100.

[0036] The communication interface 100e performs communication processing with other terminals etc. via the network NW. The display unit 110 displays the safety management status and the like. The camera 100f captures images of the surroundings and transmits the captured image data to another terminal via the communication interface 100e.

[0037] Note that configuring the monitoring device 100 and each terminal 10, 20, 30 using a computer with the configuration shown in FIG. 3 is just one example, and for example, some or all of the processing may be configured using hardware such as an FPGA (Field-Programmable Gate Array) or an ASIC (Application Specific Integrated Circuit).

[0038] [Example of safety evaluation points] Figure 4 shows an example of a safety rating score. Here, the evaluation points are shown for the workers on the car who work on top of the car 202, the workers inside the car who work inside the car 202, the workers inside the pit who work in the pit (bottom) of the elevator shaft 201, and the remote inspector.

[0039] As shown in Figure 4, the car workers, car workers, and pit workers are each assigned a relatively low base score of 10 points. The base score for each worker may be changed depending on the experience of each worker. In addition, remote checkers are given a relatively high base score of 40 points.

[0040] The work evaluation score is the score that is given to each worker if they perform their work according to the work plan. In the example of Figure 4, the car top worker and car inside worker, who are workers who must perform their work with safety in mind, are given a relatively high work evaluation score of 30 points. In addition, workers inside the elevator car, who work in a location that is almost completely safe, are given a relatively low work evaluation score of 10 points. In the case of a remote checker, since no work is performed, the work evaluation score is set to 0.

[0041] However, the work evaluation scores of 30 or 10 shown in Figure 4 apply when the position and work content of each worker are appropriate. If these are not appropriate, the work evaluation score will be deducted from 30 or 10 depending on the situation.

[0042] [Safety management processing using monitoring equipment] FIG. 5 is a flowchart showing the flow of safety management processing in the monitoring device 100. First, the basic evaluation point setting unit 107 of the monitoring device 100 reads out data on each worker and checker who will be performing the current work from the work plan database 101, and calculates the basic evaluation points for each worker and checker (step S11). Then, when inspection work at the site begins (step S12), the work estimation unit 104 estimates the work being performed by the worker based on the data transmitted from each terminal 10, 20, and registers the estimated work in the day's work history database 102 (step S13). The estimated and registered work here includes the work content and work location. The work location estimation process determines the work location based on the detection status of objects or sensors at the inspection work site photographed by a camera worn or carried by the worker, for example.

[0043] In addition to equipment installed at the inspection work site, objects at the inspection work site may also include stickers bearing two-dimensional barcodes or the like that are attached to the relevant work locations, and the two-dimensional barcodes may be read by a camera. Alternatively, a beacon (radio wave oscillator) may be installed at the work site (inside the elevator shaft), and the terminal may detect a signal from the beacon to determine its location. Alternatively, the terminal may determine its location by applying UWB (ultra-wideband wireless communication) technology.

[0044] The work location may also be estimated by detecting the operation of a switch or the like installed in the corresponding work location using the elevator control panel 90. Furthermore, the work estimation unit 104 may determine that the work content is inappropriate when an acceleration / angular velocity sensor mounted on the terminal 10, 20 detects a large movement that is different from normal.

[0045] Next, the work evaluation score determination unit 105 calculates the work evaluation scores of all workers based on the work of the workers registered in the day's work history database 102 (step S14). When calculating the work evaluation scores, the evaluation scores for the work history of the workers at the inspection work site may be added. In other words, the work evaluation scores may be higher for experienced workers. Then, the evaluation point calculation unit 106 adds the basic evaluation point obtained in step S11 and the task evaluation point obtained in step S14 for each worker and inspector to obtain the safety evaluation points for the worker and inspector (step S15).

[0046] Thereafter, the work continuation confirmation necessity determination unit 108 acquires the work content estimated by the work estimation unit 104 and determines whether work continuation confirmation is necessary (step S16). Here, it is determined that work continuation confirmation is necessary when the current work is being performed in a place where safety confirmation is required, such as work on a car or work in a pit. When it is determined in step S16 that confirmation of work continuation is not necessary (NO in step S16), the monitoring device 100 returns to the worker work estimation process in step S13. Then, when it is determined in step S16 that confirmation of work continuation is necessary (YES in step S16), the monitoring device 100 issues an alarm to all terminals of the workers currently working (step S17).

[0047] Following the issuance of the alarm in step S17, the monitoring device 100 requests a plurality of inspectors to perform a safety check (step S18). One of the inspectors is the person performing the work at the location where the safety check is required. The other inspectors are either a person who contacts the person performing the work and performs the work, or a predetermined remote inspector. The plurality of inspectors to whom the safety check is requested are predetermined, for example, by the work plan stored in the work plan database 101.

[0048] Then, the work continuation determination unit 109 determines whether the total safety evaluation points of the checkers who confirmed the safety is equal to or greater than a required value (step S19). For example, the checkers in this case are the worker and the remote checker, and the work continuation determination unit 109 determines whether the total safety evaluation points of the two checkers exceeds a threshold of 80 points. The threshold may be variably set for each work content. In step S19, if the safety evaluation score is not equal to or greater than the required value (equal to or greater than the threshold value) (NO in step S19), the monitoring device 100 returns to the safety confirmation request in step S18.

[0049] In step S19, if the safety evaluation score is equal to or greater than the required value (above the threshold) (ES in step S19), the work continuation determination unit 109 determines that work should be continued (step S20). Note that if the situation continues in which the safety evaluation score is not equal to or greater than the required value (above the threshold), the monitoring device 100 causes the elevator control panel 90 to stop the operation of the elevator (travel of the car 202). This stopping of the elevator operation may be performed simultaneously with the issuance of the alarm in step S17.

[0050] The process from step S13 to step S20 is repeatedly executed until the elevator inspection work is completed (step S21), and the safety management process by the monitoring device 100 is completed.

[0051] [Example of safety management processing status] 6 and 7 show specific examples of safety management states. Figure 6 shows an example in which worker a carrying a co-worker terminal 20 is performing work on the car, worker b carrying a worker terminal 10 is performing work in the pit, and supervisor c carrying a remote inspector terminal 30 is monitoring from a remote location.

[0052] Note that the example in Figure 6 only shows a worker on the car and a worker in the pit in order to show examples of the display on the terminal 20 on the car and the terminal 10 in the pit, but it does not indicate that work is actually performed with such an arrangement of two workers. In other words, when work is actually performed on the car, it is common for another worker to be present in the car to operate the car's movement. Also, when work is performed in the pit, it is common for another worker to be waiting, for example, at the elevator landing. These other workers are not shown in Figure 6.

[0053] The example in FIG. 6 shows a state in which an alarm is issued in step S17 of the flowchart in FIG. 5, and a safety confirmation is requested in step S18. Here, it is assumed that it has been confirmed from the cameras and sensors of the terminals 10 that both the worker a on the car and the worker b in the pit are working in safe places. In this case, when the safety evaluation points shown in Figure 4 are set, each of workers a and b will receive a base score of 10 points and a work evaluation point of 30 points, for a total safety evaluation point of 40 points. In addition, supervisor c will receive a base score of 40 points and a safety evaluation point of 40 points.

[0054] An alarm is displayed on the display unit 13 of the terminal 10 and the display unit 23 of the co-worker terminal 20, and the message "Please check safety. Have you checked safety?" is displayed to prompt the worker to make a safety check. Furthermore, the display unit 13 of the terminal 10 displays two buttons (YES button and NO button) 13a, 13b following the message prompting the worker to make a safety check. Similarly, the display unit 23 of the terminal 20 also displays two buttons 23a, 23b. If there is another worker present, a message prompting the worker to make a safety check is also displayed on the terminal of each worker. When displaying an alarm, the terminals 10 and 20 may also notify the alarm by sound, vibration, or the like.

[0055] The display unit 33 of the terminal 30 of the supervisor c displays the safety confirmation status at the terminals 10 and 20. For example, in the example of FIG. 6, the total of the safety evaluation score of worker a, 40 points, and the safety evaluation score of checker c, 40 points, is 80 points, and similarly, the total of the safety evaluation score of worker b, 40 points, and the safety evaluation score of checker c, 40 points, is 80 points. Therefore, the safety evaluation scores of both workers a and b, including checker c, are 80 points, exceeding the threshold, and it is displayed that safety has been confirmed. The threshold here is a threshold that determines when both workers have appropriate evaluation scores.

[0056] Therefore, the display unit 33 of the terminal 30 displays "Confirmation by worker a and worker b is OK (evaluation score OK). Work will be maintained." At this time, the display unit 33 of the terminal 30 may also display buttons similar to buttons 13a and 13b to request a confirmation operation. Then, the work by worker a and the work by worker b are carried out successively. Note that if there is another worker d working in conjunction with worker a or worker b, the safety evaluation score may be determined to be appropriate when the sum of the safety evaluation score of worker a or worker b and the safety evaluation score of the other worker d exceeds, for example, 80 points. Alternatively, depending on the content of the inspection work, the safety evaluation score may be determined to be appropriate when the sum of the safety evaluation score of worker a or worker b, the safety evaluation score of the other worker d, and the safety evaluation score of remote inspector c exceeds a threshold value when judged by three people, such as 120 points.

[0057] The example in Fig. 7 is a case where a state in which worker a on the car leans out of the car 202 is detected by the camera or sensor of the terminal 20. In this case, the work evaluation score for worker a is deducted from the original 30 points (here, 10 points), and the safety evaluation score, which is the sum of the basic score and the work evaluation score, becomes 20 points. In such a case, the total safety evaluation points of worker A and inspector C, and the total safety evaluation points of worker A and another co-worker (not shown), do not exceed the threshold value, and safety cannot be confirmed. Therefore, in this state, the operation of the elevator is stopped by control of the monitoring device 100.

[0058] In the example of FIG. 7, the display unit 23 of the terminal 20 displays "We cannot confirm that you are in a safe place. Please take a picture of your work place with a camera," urging the worker a to ensure safety. Furthermore, the display unit 33 of the terminal 30 of the remote inspector c displays "Evaluation score NG. The position of worker a cannot be confirmed. Have you confirmed the safety of worker a?" and displays buttons 33a and 33b requesting whether or not to confirm safety. After confirming this display, the remote inspector c calls the terminal 20 and performs the work of confirming worker a by phone, email, chat, or the like. If the safety of worker a can be confirmed through the confirmation work, the monitoring device 100 releases the suspension of elevator operation.

[0059] As explained above, in the work management system of this example, the monitoring device 100 calculates a safety evaluation score for each worker and inspector depending on the situation at the time, and safety is ensured when the total score of the calculated safety evaluation scores for multiple people according to the work content is equal to or exceeds a threshold. When safety is ensured, the worker performs further confirmation, and then the elevator is operated, allowing the inspection work to continue. If the total calculated safety evaluation points of multiple people according to the work content is below a threshold, the elevator is stopped as safety is not ensured and the relevant workers are checked, thereby preventing inspection work from continuing in a situation where safety is not ensured. In particular, in this example, whether safety is ensured is determined based on the scores of multiple people according to the work content, making it possible to more appropriately confirm safety than by judging from the movements or position of a single worker.

[0060] [Variations] The embodiment examples described so far have been described in detail to clearly explain the present invention, and are not necessarily limited to those having all of the configurations described. For example, in the evaluation points shown in Fig. 4, the work evaluation points are all the same, but the work evaluation points may be changed depending on the content of the inspection work. Also, the threshold value used for judgment by the work continuation determination unit 109 may be changed depending on the content of the inspection work. For example, the work evaluation score or threshold may be variably set based on at least one of the following: the degree of danger in the work plan for the inspection work, the discrepancy between the work plan and the actual work order or work time during the elevator inspection work, the peculiarities of the equipment layout at the work site, and past accident cases. By variably setting the work evaluation score or threshold in this way, it becomes possible to make an appropriate evaluation according to the actual inspection work content. The actual work order or work time deviation during inspection work can be determined from the work plan stored in the work plan database 101. The peculiarities of the device layout at the work site and past accident cases can also be determined based on the work plan.

[0061] Furthermore, in the above-described embodiment, safety management is performed during elevator inspection work, but similar safety management may also be performed during inspection work on other elevators other than elevators, or on equipment other than elevators.

[0062] In addition, the configuration diagram shown in Figure 1 shows only the control lines and information lines that are considered necessary for explanation, and does 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. Furthermore, the flowchart shown in FIG. 5 is also an example, and as long as the processing results are the same, the order of some of the processing may be changed or multiple processes may be executed simultaneously.

[0063] Furthermore, the monitoring device 100 described in each of the above-described embodiments may be configured by implementing a program that executes the processing shown in the flowchart of Fig. 5, and in this case, the program is prepared in the memory 100b or storage 100c in the computer shown in Fig. 3. Alternatively, the program executed by the computer serving as the monitoring device 100 may be stored in an external memory, an IC card, an SD card, an optical disk, or other recording medium, and transferred to the computer that functions as the monitoring device 100. [Explanation of symbols]

[0064] 10...Worker terminal, 11...Detection unit, 12...Control unit, 13...Display unit, 14...Wireless communication unit, 20...Collaborator terminal, 23...Display unit, 30...Remote checker terminal, 33...Display unit, 90...Elevator control panel, 100...Monitoring device, 100a...CPU, 100b...Memory, 100c...Storage, 100d...Input unit, 100e...Communication interface, 100f...Camera, 101...Work plan database, 102...Today's work history database, 103...Wireless communication unit, 104...Work estimation unit, 105...Work evaluation point determination unit, 106...Evaluation point calculation unit, 107...Basic evaluation point setting unit, 108...Work continuation confirmation necessity determination unit, 109...Work continuation determination unit, 110...Display unit, 201...Hoistway, 201a...pit, 203...main rope, 204...hoisting machine, 205...weight

Claims

1. A safety management system that monitors inspection work by workers, an evaluation score calculation unit that calculates safety evaluation scores individually for the worker and the other checker; a work continuation determination unit that compares the total number of safety evaluation points individually calculated by the evaluation point calculation unit with a preset threshold value to determine whether or not the worker can continue working, and makes a confirmation request based on the determination result. Safety management system.

2. The inspection work is an elevator inspection work. The safety management system of claim 1 .

3. a work estimation unit that determines whether or not each of the worker and / or the checker is at a work position indicated in a work plan; The evaluation score calculation unit adds a safety evaluation score based on the work position determined by the work estimation unit. The safety management system according to claim 2 .

4. The threshold or safety evaluation point is variably set based on at least one of the following: the degree of danger of the work plan contents of the inspection work, the difference between the work plan and the actual work order or work time during the elevator inspection work, the peculiarities of the device layout at the work site, and past accident cases. The safety management system according to claim 2 .

5. The work estimation unit determines a work position based on the detection status of an object or a sensor at an inspection work site photographed by a camera worn or carried by the worker. The safety management system according to claim 3 .

6. The evaluation score calculation unit adds up safety evaluation scores for the work history of the worker at the inspection work site. The safety management system according to claim 3 .

7. The inspector is either another worker at the same elevator inspection site, an employee of the sales office, an employee of the remote control center, or an employee of the safety control center, and the inspector has a basic point as the safety evaluation point. The safety management system according to claim 2 .

8. The work continuation determination unit determines that the worker is allowed to continue the work when the total score of safety evaluation points of two or more specific workers and the inspector for each inspection work content is equal to or greater than a preset threshold. The safety management system according to claim 7.

9. A safety management method for monitoring inspection work by a worker using an information processing terminal, comprising: The process executed by the information processing terminal is an evaluation score calculation process for calculating safety evaluation scores individually for the worker and the other checkers; a work continuation determination process for comparing the total number of safety evaluation points individually calculated in the evaluation point calculation process with a preset threshold value to determine whether the worker can continue working, and making a confirmation request based on the determination result. Safety management methods.

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