JP7017535B2 - Work management system and its method - Google Patents

Description

The present invention relates to a work management system and a method thereof, and is suitable for application to, for example, a work management system for tracking and managing the action history of a plurality of workers engaged in elevator maintenance work.

A work management system is known to manage a worker engaged in a predetermined work. Recently, it is desired that a plurality of persons engaged in collaborative work can grasp each other's positional relationship with each other in real time by managing the history and process of the worker's behavior. By doing so, it is expected that it will lead to prevention of erroneous work and accidents.

Therefore, for example, maintenance work for an elevator involves the worker moving in the direction of gravity, so that the work management system must be able to continuously and continuously detect the movement of the worker in the direction of gravity. It is conceivable to perform this detection using an artificial satellite, but since the work is performed inside the building where the elevator is installed, there is a possibility that a large error will occur in the measured values measured outside the building.

On the other hand, the elevator maintenance work support device and its system according to Patent Document 1 detect the position information of the worker based on the identification signal from the beacon installed in the building, and this position. By transmitting information to the work monitoring device, the behavior of workers can be monitored inside the building rather than from outside the building.

Japanese Patent No. 6369664

However, in the system according to the above-mentioned prior art document 1, not only the position of the worker in the building cannot be known unless the beacon device is installed in the building, but also the cost increases due to the need to install the beacon device. There are many restrictions on the continuous monitoring of worker behavior within the building, such as increased installation work and legal permits for the building.

The present invention has been made in consideration of the above problems, and an object thereof is to move up and down in a building without adding large-scale equipment such as having to install a plurality of beacon devices in the building. It is an object of the present invention to provide a work management system and a management method capable of accurately and continuously monitoring the behavior of a person engaged in a work involving the above.

The present invention that solves this problem is a work management system that manages a plurality of workers who perform work on an elevator, and communicates with a terminal carried by each of the plurality of workers and with each of the plurality of terminals. Each of the plurality of terminals includes a measurement unit that fluctuates and outputs a measured value in the direction of gravity, and a warning notification unit that notifies a warning signal. , A work plan storage unit that stores a work plan related to the work, a building information storage unit that stores building information regarding the gravity direction of the building that is the target of the work, and information on a reference point in the measurement in the gravity direction. Then, when a predetermined condition is satisfied, the building information is referred to, a predetermined calculation is performed on the information of the reference point to obtain a reference value, and the reference value is applied to each of the plurality of workers. A reference value calculation unit, a conversion unit that calculates a relative value between the reference value and the reference point and the measured value, and converts the relative value into a distance in the direction of gravity, and the reference value for each of the plurality of workers. It is calculated based on the distance converted into the distance, and this is compared with the work plan to determine the suitability of the positional relationship between the plurality of workers in the work determination unit and the determination result of the work determination unit. Based on this, it has a warning output unit that outputs a warning signal from the warning notification unit.

According to the present invention, the behavior of a person engaged in work involving ascending / descending in a building is accurately and continuously monitored without the addition of large-scale equipment such as the need to install a plurality of beacon devices in the building. It is possible to provide a work management system and a management method that can be performed.

It is a block diagram which shows the structural example of the work management system (hereinafter, also referred to as "the present system") which concerns on one Embodiment of this invention. It is a block diagram which shows this system of FIG. 1 in more detail. It is a sequence diagram which shows the processing procedure example of the action history tracking processing of a plurality of workers by this system of FIG. It is a figure explaining the expected change of the measured atmospheric pressure when a plurality of workers work in the correct position. It is a figure explaining the expected change of the measured atmospheric pressure when a plurality of workers work in an improper position. It is a figure which shows the work plan of a plurality of workers which took the governor catch test as an example. It is a figure explaining the condition which determines whether or not a plurality of workers worked in an illegal position based on the work plan of FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
(1) Configuration of work management system FIG. 1 is a block diagram showing a configuration example of a work management system (this system) according to an embodiment of the present invention. As shown in FIG. 1, the system 1 includes an elevator control panel 10, a terminal 20, a management server 30, and a communication network 7. The terminal 20 may be carried by each of a plurality of workers A and B.

The terminal 20 and the management server 30 are connected by a communication network 7 via Wi-Fi (registered trademark), Bluetooth (registered trademark) or other wireless LAN. The same applies to the elevator control panel 10 and the management server 30, but the elevator control panel 10 may be connected via a wired LAN. The communication network 7 may be the Internet, a mobile phone network, or the like.

The management server 30 includes a CPU (Central Processing Unit) 3, a memory 4, a communication device 5, and an input / output device 6. The CPU 3 executes a program stored in the memory 4 and continuously monitors the behavior of the worker carrying the terminal 30, that is, the worker's ascending / descending motion in the direction of gravity, based on the position information from the terminal 20. do.

The memory 4 includes a main memory that is directly and always accessed by the CPU 3, and an auxiliary memory such as a hard disk drive that is inaccessible to the CPU 3 but retains data even when the power is turned off. The communication unit 5 includes an elevator I / F unit 31 and a terminal I / F unit 32, and forms an interface for information communication with the management server 30 and the terminal 20, respectively. The input / output unit 6 has a function for the user to input / output various information to / from the management server 30. For example, a keyboard for input and a display for display correspond to the input / output unit 6.

This system 1 manages the action histories of a plurality of workers A and B (FIGS. 3 to 7) who perform elevator work such as maintenance and inspection on the elevator. In addition, the system 1 tracks the action histories of a plurality of workers A and B, and outputs warning signals as appropriate to contribute to the prevention of erroneous work or accidents.

FIG. 2 is a block diagram showing the system of FIG. 1 in more detail. As shown in FIG. 2, the elevator control panel 10 includes a management server (center) I / F unit 11, an elevator control unit 12 that controls the running of the elevator, a correction signal receiving unit 13, and a correction signal transmitting unit 14. And prepare. The management server (center) I / F unit 11 performs remote communication with the management server 30 via a relay device or the like (not shown). The elevator control unit 12 controls the running of the elevator.

The correction signal receiving unit 13 detects the operation of a switch (not shown) dedicated to maintenance in the car, that is, the operation of the safety / control device. The correction signal transmission unit 14 transmits the correction signal to the management server 30. In addition to the equipment installed in the elevator such as a maintenance switch, the correction signal can be communicated if communication equipment with a business support device (not shown) that can communicate with the elevator at a short distance is available. It may be acquired by equipment.

The terminal 20 is a terminal carried by each worker of the elevator work, and is, for example, a smartphone, a smart watch, a wearable device, or the like. As shown in FIG. 2, the terminal 20 includes a management server I / F unit 21, a barometric pressure measurement unit 22, an environmental temperature measurement unit 23, a sensor value storage unit 24, an entrance / exit information processing unit 25, and an entry / exit information processing unit 25. A warning output unit 26 is provided.

The management server I / F unit 21 performs remote communication with the management server 30 via a relay device or the like (not shown). The barometric pressure measuring unit 22 measures the barometric pressure value. The environmental temperature measuring unit 23 measures the environmental temperature. Since the conversion of pressure and height information is affected by the air temperature, the environmental temperature measurement unit is an example of an additional configuration for improving the measurement accuracy of the workers A and B with respect to the position in the gravity direction in the system 1. 23 is provided.

The sensor value storage unit 24 temporarily stores the measured values of the above-mentioned measurement units. The entrance / exit information processing unit 25 controls the start / end of storage of the sensor value according to the operation of the entrance button / exit button (not shown), and notifies the management server. The warning output unit 26 outputs a warning signal when the positional relationship between the plurality of workers A and B is incorrect during the work.

The management server 30 is a management device that integrally manages a plurality of elevators, and is realized by, for example, a dedicated computer or a database. The management server 30 is generally installed in a place remote from the elevator to be managed in order to avoid the influence of a natural disaster.

The management server 30 includes an elevator I / F unit 31, a terminal I / F unit 32, a work plan storage unit 33, a building information storage unit 34, a reference value calculation unit 35, and a barometric pressure / height conversion unit (hereinafter referred to as a barometric pressure / height conversion unit). 36, a work determination unit 37, a warning output unit 38, and an action history storage unit 39. The elevator I / F unit 31 and the terminal I / F unit 32 serve as communication units that perform remote communication with an external device (in this case, the elevator control panel 10 and the terminal 20) via a relay device or the like (not shown). Has a function.

Most of these functions are realized by the CPU 3 executing the program stored in the memory 4. The functions and means realized in this way are referred to as "-parts". However, this "-part" can be realized not only by the CPU 3 executing a program but also by hardware that does not use a computer.

The work plan storage unit 33 stores the work plan of the elevator work in advance. The building information storage unit 34 stores predetermined building information regarding the work site of the elevator work in advance. The work plan stored in the work plan storage unit 33 will be described later with reference to FIG. Hereinafter, an example will be described in which atmospheric pressure is used as predetermined fluctuation information that fluctuates in the direction of gravity and the reference point of the fluctuation information is set as the ground floor of the target building.

Atmospheric pressure can be measured accurately and easily using the atmospheric pressure measuring unit 22 and the temperature can be measured accurately and easily using the environmental temperature measuring unit 23 (collectively referred to as "measurement units 22 and 23"), so that the direction of gravity with respect to the reference point. The current altitude of the barometric pressure measuring unit 22 is calculated from the barometric pressure fluctuation information according to the barometric pressure fluctuating in.

The reference value calculation unit 35 is based on, for example, the air temperature on the ground floor, the measured atmospheric pressure value, and the atmospheric pressure information (sea level pressure) at an altitude of 0 m at the time of the actual measurement, and the fluctuation information at the reference point, that is, the atmospheric pressure. Is calculated. That is, the reference value calculation unit 35 stores the reference value at the reference point of the fluctuation information, and when the predetermined condition is satisfied, the reference value calculation unit 35 makes a correction by recalculating the reference value. This amendment applies to all workers at the same time. The predetermined condition means the condition indicated as "position check is required" in rows Nos. 6 and 7 of FIG. 7, as will be described later with reference to FIG. 7.

Although it is difficult to actually measure the sea surface pressure on land, a converted value can be obtained from the measured value on land that can be measured. Such barometric pressure information at an altitude of 0 m above sea level is described and published at an observation point on a weather map, and by obtaining and using it in real time, more accurate correction is possible.

The barometric pressure / height conversion unit 36 converts barometric pressure value data of a plurality of workers A and B continuously transmitted from the terminal 20 into height information. That is, the conversion unit 36 calculates the relative value of the measured value by the measuring units 22 and 23 with respect to the reference value and the reference point, and converts the distance in the direction of gravity, that is, the height from the reference point. Briefly, in an environment where the surface temperature is 15 ° C. and the surface pressure is 1013 hPa, if the measured atmospheric pressure as fluctuation information is 1001 hPa, it can be roughly calculated that the ground clearance is 100 m.

The work determination unit 37 confirms the positional relationship between the plurality of workers A and B based on the work plan. The warning output unit 38 instructs the terminal 20 to display a warning when the positions of the plurality of workers A and B are incorrect based on the determination result of the work determination unit 37. The action history storage unit 39 stores the action histories of a plurality of workers A and B after the work is completed.

The configuration example of the present system 1 has been described above with reference to FIG. The measuring units 22 and 23 are preferably built in the terminal 20 if the terminal 20 has a property of being used exclusively in the system 1. Alternatively, if the multipurpose terminal 20 is diverted to the system 1, the measuring units 22 and 23 may be configured to function by an optional external sensor (not shown).

The plurality of workers A and B refer to the first worker A (hereinafter, also simply referred to as “worker A”) and the second worker B (hereinafter, also simply referred to as “worker B”). Two or more people including. Further, as shown in rows Nos. 1 to 10 in FIG. 7, as will be described later, the work plan stipulates where each of the plurality of workers A and B should be. In particular, under the conditions shown in rows Nos. 6 and 7 of FIG. 7 that "position check is required", they are strictly managed because of the meaning of work safety management. That is, when one worker B works on the car, the other worker A should be in the machine room. This is based on the work plan for elevator work. The work plan is stored in advance in the work plan storage unit 33.

(2) Warning signal output processing The following is the case where the movement tracking of all workers with respect to the reference floor in the direction of gravity due to the elevator work by multiple workers A and B and the positions of multiple workers A and B are incorrect. The warning display process will be described. In the elevator work, the system 1 tracks the movement history of all the workers in the gravity direction with high accuracy, at least for the action history of the plurality of workers A and B over the whole work.

That is, according to this system 1, it is possible to track the action histories of a plurality of workers A and B in the elevator work without performing additional work such as installing a beacon device in the target building. When the positional relationship between the plurality of workers A and B tracked by the system 1 is incorrect, it is possible to contribute to the prevention of erroneous work or accident by outputting a warning signal.

FIG. 3 is a sequence diagram showing an example of a processing procedure for behavior history tracking processing of a plurality of workers A and B by the system of FIG. The sequence diagram shown in FIG. 3 illustrates an elevator governor catch test. This work is carried out jointly by Worker A and Worker B, and during the test, Worker A is in the machine room (not shown) at the height of the top floor + 1st floor (hereinafter, also referred to as "tower"). Worker B needs to work on a car (not shown).

Hereinafter, the processing procedure will be described in detail with reference to FIG. Before starting the action tracking, in the management server 30, the work plan is previously stored in the work plan storage unit 33, and the building information of the work site (hereinafter, also referred to as “building information”) is stored in the building information storage unit 34. Suppose you store it. Specifically, the building information includes, for example, the height of the building in the building where the elevator is installed, the altitude above sea level of the building (at least the altitude above sea level of the reference floor (for example, the first floor)), the floor information of the elevator, and the like. Hereinafter, "elevation above sea level" is also simply referred to as "above sea level". In addition, workers A and B carry terminals A and B, respectively. Here, the terminal carried by the worker A is referred to as a terminal A. Similarly, the terminal carried by the worker B is referred to as a terminal B.

First, workers A and B enter the building from the reference floor (for example, the first floor) of the building where the elevator to be worked is installed according to the work plan shown in FIG. 6, and then the terminal carried by the worker. The action history tracking process is started when each of the predetermined "entrance buttons" is pressed in 20 (steps S1 and S2).

The method of implementing the entry button is not particularly limited, but for example, the entry / exit information processing unit 25 uses the start button of a predetermined application (application that controls storage start / end of sensor value) for controlling the operation. Can be done. At this time, the exit button of the application can be used as the exit button.

First, when the workers A and B each press the entrance button (steps S1 and S2), the entry / exit information processing unit 25 of the terminal 20 carried by each of the workers A and B is operated by the barometric pressure measurement unit 22 of the terminal 20. Atmospheric pressure measurement is started (steps S3 and S4). Here, the barometric pressure value of the reference floor at the start of tracking and the start of tracking of the respective workers A and B is notified to the management server 30. Then, the barometric pressure measured value by the barometric pressure measuring unit 22 is temporarily stored in the sensor value storage unit 24 and transmitted to the management server 30 in real time via the management server (center) I / F 21 until the end of tracking.

When the management server 30 receives the notification of the start of tracking of the respective workers A and B, the management server 30 starts tracking to each worker. First, the reference value calculation unit 35 sets the atmospheric pressure of the reference floor when either worker A or B first enters the building as the first reference atmospheric pressure. The pressure / height conversion unit 36 refers to the reference value and the building information (reference floor above sea level, floor information, etc.) of the building information storage unit 34, and receives time-series data of the pressure values of the workers A and B. Convert to height information (or floor information) for the reference floor (step S5). Further, when the terminal 20 includes the environmental temperature measuring unit 23, the measurement / transmission of the temperature value is also started. The reference value calculation unit 35 may update the reference pressure by using the pressure of the reference floor when either the worker A or the worker B enters the building later as the latest reference pressure.

There is the following relationship between the altitude above sea level and the atmospheric pressure.
h = ((Pa / Pm) ^{1 / 5.257} -1) * T / 0.0065 ... (Equation 1)
Here, h is above sea level, Pa is the sea level (0 above sea level) pressure value, Pm is the pressure value at the time of the site, and T is the environmental temperature (absolute temperature). If the altitude above sea level of the reference floor is known from Equation 1, the barometric pressure / height conversion relationship at the time of the site can be found by back-calculating the sea level pressure.

The worker A moves to the machine room on the roof (step S6) according to the work plan, and the worker B moves to the lowest floor and the designated work floor other than the roof (step S7) to prepare the work. After arriving at the designated floor, the worker B gets into the elevator car (not shown) and turns on the switch for maintenance in the car (not shown) (step S8).

When the correction signal receiving unit 13 of the elevator control panel 10 detects that the switch for maintenance in the car is turned on, the correction signal transmitting unit is combined with the floor information X of the elevator car acquired from the elevator control unit 12. It is transmitted from 14 to the management server 30 via the management server (center) I / F unit 11. From this correction signal, the management server 30 refers to the work plan of the work plan storage unit 33, and it can be seen that the worker B is on the Xth floor.

Then, the reference value calculation unit 35 refers to the sea level information and the floor information of the reference floor of the building information storage unit 34, calculates the current sea level pressure again from Equation 1, and calculates the atmospheric pressure / height conversion relationship. , The reference atmospheric pressure of the latest reference floor is obtained and stored in the reference value calculation unit 35 (step S9). This reference value is the latest reference pressure for all workers A and B (step S10).

In the case of the above-mentioned calculation method, the environmental temperature T is measured by the environmental temperature measuring unit (environmental temperature sensor) 23, and the sea level pressure value Pa is calculated by Equation 1 using the environmental temperature T. Strict measurement accuracy can be expected for the sea surface pressure value Pa. On the other hand, when the measurement accuracy up to that level is not required, the values of the environmental temperature T and the sea surface pressure value Pa may be determined by using the meteorological information published by the nearest meteorological observation organization. In this case, the environmental temperature measuring unit 23 does not need to be mounted on the terminal 20, and the cost can be suppressed by reducing the number of required sensors.

Further, the work management system according to the present embodiment is not limited to the calculation by the above-mentioned equation 1, and the conversion relationship between the atmospheric pressure and the height may be determined by another method. For example, a field survey may be conducted in advance to determine the conversion relationship between atmospheric pressure and height. For example, a method such as confirming the actual amount of change in atmospheric pressure when operating each floor of the elevator may be used. It may be adopted.

Worker B disembarks from the elevator car and moves to the top of the car according to the work instruction (step S11). Then, in order to work on the car, an On-Cage switch (hereinafter, also referred to as “On-Cage SW”) (hereinafter, also referred to as “On-Cage SW”) (not shown) is turned on as a safety device that is always turned on when working on the car (step S12).

When the elevator control panel 10 detects that the On-Cage SW is turned on, the elevator control panel 10 notifies the management server 30. The management server 30 follows the work plan, and the workers A and B prepare for the governor catch operation test and act separately to start the test. Then, the work determination unit 37 refers to the work plan of the work plan storage unit 33, and determines whether or not the current positions of the worker A and the worker B are correct positions. The correct position is defined as the correct position under the condition shown in rows Nos. 6 and 7 of FIG. 7 that "position check is required", while one worker B is working on the car while the other worker is working. A means that it is located in the machine room.

In this embodiment, as shown in the work plan of FIG. 6, in order to perform the governor catch test, the worker A is always in the machine room (S32 and S33) and the worker B is on the car (S45, S46). You have to work at the same time. The work determination unit 37 continuously confirms the positions of the workers A and B until the On-Cage SW is released (steps S13 and S14).

When the position error of the workers A and B is detected, the warning output unit 38 sends a warning display command to the terminal 20 carried by the workers A and B via the terminal I / F unit 32. When the terminal 20 receives the warning display command, an appropriate warning is issued (voice, image, vibration, etc.) so that the operator can always understand (steps S15 and S16).

FIG. 4 is a diagram illustrating a predicted change in the measured atmospheric pressure when a plurality of workers A and B work at correct positions. FIG. 5 is a diagram illustrating a predicted change in the measured atmospheric pressure when a plurality of workers A and B work at improper positions. In FIGS. 4 and 5, the vertical axis 2 shows the altitude and atmospheric pressure of the building, and the horizontal axis shows the elapsed time from the worker's entry to exit.

In FIG. 3, the behavior of the worker A is shown from the machine room movement S6 to the machine room work S17. The behavior of the worker B in response to this was shown by moving to the top of the car S11 and the work S18 on the car. As can be read from it, in the work plan of the governor catch test of this embodiment, when the worker B works on the car, the worker A is obliged to be in the machine room without fail.

Based on this work plan, if the positions of the workers A and B are correct, the tracking waveform shown by the worker A in FIG. 4 can be obtained. Further, when the positions of the workers A and B are incorrect, the tracking waveform as shown in FIG. 5 is obtained, and a warning is displayed during the work. The work position determination index for the workers A and B by the work determination unit 37 may be the absolute position of each of the plurality of workers A and B, or may be the relative position between the plurality of workers A and B.

In FIGS. 4 and 5, as shown in the vertical axis 2 on the left side, the atmospheric pressure value on the reference floor (in this example, the first floor of the lowest floor) is set to "0", and the amount of change in atmospheric pressure for the first floor is defined as P. Then, the expected relative pressure at each floor can be expressed using F and P. Specifically, the relative pressure reference value in the pit (-1st floor) is "P", the relative pressure reference value in the top floor (F floor) is "-(F-1) x P", and the machine room (F + 1). The relative atmospheric pressure reference value in the floor) is "-F x P". By converting this amount of change in atmospheric pressure into height information (or floor information) by the atmospheric pressure / height conversion unit 36, the movement history of each of the workers A and B in the gravity direction can be known.

After the workers A and B finish the work on the machine room and the car at the correct positions (steps S17 and 18), the worker B releases the On-Cage SW (step S19). When the release of the On-Cage SW is detected, the elevator control panel 10 notifies the management server 30, the management server 30 refers to the work plan, finds that the governor catch test has been completed, and determines the work of the management server 30. The confirmation of the work position accuracy of the workers A and B by the unit 37 is completed (step S14). In step S14, only the confirmation of accuracy is completed, and the tracking itself is continued.

Workers A and B move to the entrance floor and press the exit buttons of their respective terminals 20 (steps S20 to 23). The terminal 20 ends the memory of the barometric pressure measuring unit 22 (steps S24 and S25), and notifies the management server 30 of the notification of the end of tracking. The management server 30 finishes tracking each worker, stores the tracking result in the action history storage unit 39, and utilizes it for work acceptance inspection, educational activities, and the like (not shown) (step 26).

As described above, in this system 1, the behavior of each worker can be tracked with high accuracy from the barometric pressure sensors of the terminals 20 carried by a plurality of workers A and B who carry out the elevator work, and between the workers. If the work position is incorrect, it is possible to prevent erroneous work and accidents by issuing a warning. In System 1, the explanation was simplified and the reference value was corrected only once. However, in order to improve the accuracy of tracking, the present embodiment is not limited to this, and at least two or more are specified. It suffices if the work point of is provided.

Further, in this system 1, the governor catch test is exemplified as an example of elevator work, but the target of work management by the work management system according to the present embodiment is not limited to this, and for example, other gravity directions. It may be used for tracking the movement history of elevator work by a plurality of workers A and B accompanied by the movement of. Further, instead of using the change in the relative pressure with respect to the reference floor, the absolute pressure value may be stored and the change in the altitude above sea level of the worker may be tracked.

FIG. 6 is a diagram showing work plans of a plurality of workers A and B using a governor catch test as an example. As shown in FIG. 6, the work plan of the governor catch test by a plurality of workers A and B includes the following procedure. First, workers A and B enter the building (S30). Hereinafter, the workers A and B will be described separately. One worker A moves to the machine loss (S31), starts the operation test (S32), finishes the operation test (S33), moves to the entrance floor (S34), and leaves the building (S35).

The other worker B moves to the designated floor (other than the top / bottom floor) (S41), turns on the SW for maintenance in the car (S42), moves to the top of the car (S43), and turns on-Cage on the car. SW input (S44), operation test start (S45), operation test end (S46), on-cage SW release on the car (S47), move to the entrance floor (S48), and leave with worker A. (S35). It should be noted that the actions of the workers A and B entering and leaving the building indicate that they are almost at the same timing in the whole work, but it does not have to be strict.

FIG. 7 is a diagram illustrating a condition for determining whether or not a plurality of workers A and B have worked at invalid positions based on the work plan of FIG. For the same behavior described in FIG. 6, the same S code is attached to the main part of FIG. 7 for matching. In particular, the number of rows indicated by No. 1 to No. 10 in the leftmost column of FIG. 7 corresponds to the work progress of entry (S30) to exit (S35) of FIG. Further, each row of FIG. 7 shows the gravity direction position associated with the actions of the workers A and B, the necessity of the position check, and the position check method.

In line No. 6 of FIG. 7, at the timing when the workers A and B start the operation test (S32, S45), the gravity direction position of the worker A is already the height of the top floor + 1st floor (tower). , The position of the worker B in the direction of gravity is on the car. From this time, it is necessary to check the positions of both workers A and B. The position check method will be specifically described later.

In line No. 7 of FIG. 7, at the timing when the operation test is completed (S46) by the worker B, the gravity direction position of the worker A maintains the height of the tower as it is, and the gravity direction position of the worker B is also , Maintained on the basket. Until this time, it is necessary to check the positions of both workers A and B. The position check method will be described in detail below.

[When high-precision measurement is not required]
High-precision measurement may not be necessary due to the intention of the work manager (not shown). For example, the workers A and B may manage the work based only on the simple positional relationship of the floors to be located, according to the progress of each work. In such a case, it is not necessary to strictly compare the floor where the worker should be and the measured value, as long as the altitude of the worker A> the altitude of the worker B, the worker A, B determines that both have worked in the correct positions. On the contrary, when the comparison result is the altitude of the worker A ≤ the altitude of the worker B, it is determined that at least one of the workers A and B is located at an invalid position.

[When high-precision measurement is required]
On the other hand, high-precision measurement may be required due to the intention of the work manager (not shown). For example, the case where the workers A and B strictly track the floor to be located according to the progress of each work and manage the work based on the result of high-precision measurement is applicable. In such a case, the floor where the worker should be and the measured value are strictly compared. When the comparison result deviates from the predetermined error tolerance, it is determined that at least one of the workers A and B has worked at an incorrect position. In order to realize this, a technique for making it possible to track the actions of the workers A and B with high accuracy is also disclosed in the present embodiment.

[Elevator without a machine room in the tower of the building]
In this embodiment, an elevator in which a machine room is provided in a building tower is taken as an example, but in recent years, there are many elevators in which a machine room is not provided in a building tower. One example is a machine room-less elevator, which is installed on the platform of an elevated railway and has a thin elevating mechanism attached to the side of the guide rail. Another example is a hydraulic elevator that is raised and lowered by a hydraulic mechanism connected to the bottom of the car. Even with these elevators, there is a minimum safety management rule for the inspection work, and while the worker B is working on the car, the worker A is located within the range where the operation panel corresponding to the machine room can be operated. Should be. In this regard, it is based on the same principle as an elevator with a machine room in the tower of a building. Therefore, even in the case of an elevator such as a machine room-less elevator or a hydraulic elevator, the basic principle of this embodiment (worker A is on a floor with a control panel, worker B is on a different floor) can be applied.

This system 1 can also be summarized as follows.
[1] This system 1 manages a plurality of workers A and B each performing work on an elevator, and a terminal 20 carried by each of the plurality of workers A and B and a plurality of terminals 20 respectively. It is configured to include a management server 30 that communicates with. Each of the plurality of terminals 20 has a measurement unit 22 and a warning notification unit 26. The measuring unit 22 fluctuates and outputs the measured value in the direction of gravity. The warning notification unit 26 notifies the warning signal.

The management server 30 has a work plan storage unit 33, a building information storage unit 34, a reference value calculation unit 35, a conversion unit 36, a work determination unit 37, and a warning output unit 38. The work plan storage unit 33 stores a work plan including the position information of the worker. The building information storage unit 34 stores building information regarding the direction of gravity of the building to be worked on.

The reference value calculation unit 35 stores information on the reference point in the measurement in the direction of gravity, and when a predetermined condition is satisfied, refers to the building information and executes a predetermined calculation on the information on the reference point to perform a reference. A value is obtained, and the reference value is applied to each of a plurality of workers A and B. The predetermined condition means the condition indicated as "position check is required" in rows Nos. 6 and 7, as described above with reference to FIG. 7.

The conversion unit 36 calculates a reference value and a relative value between the reference point and the measured value, and converts this into a distance in the direction of gravity. The work determination unit 37 obtains the position of the worker based on the distance converted into the distance between the plurality of workers A and B and the reference value, compares the result with the work plan, and compares the result with the work plan. Determine the suitability of the positional relationship between A and B. The warning output unit 38 outputs a warning signal from the warning notification unit 26 based on the determination result of the work determination unit 37.

According to this system 1, the behavior of a person engaged in work involving ascending / descending in a building can be performed accurately and continuously without the addition of large-scale equipment such as the need to install multiple beacon devices in the building. Can be monitored.

[2] The measuring unit is a barometric pressure sensor.
[3] The plurality of workers A and B are two or more including the first worker A and the second worker B. The first worker A should be located in the machine room. The second worker B works on the car. This is based on the work plan for elevator work. The work plan is stored in advance in the work plan storage unit 33.

In the work determination unit 37, when the altitude of the first worker A ≤ the altitude of the second worker B, at least one of the first worker A and the second worker B is invalid. It is judged that the work was done in a different position.

[4] When the work determination unit 37 detects that the second worker B is located on the car by the mode of the on-cage switch (On-CageSW) arranged on the car. The correctness is determined for the positional relationship between the plurality of workers A and B.

[5] It is desirable that the building information includes the altitude above sea level of the reference floor of the building. Further, it is preferable that the terminal 20 further includes an environmental temperature sensor (environmental temperature measuring unit 23) for measuring the environmental temperature. In that case, the reference value calculation unit 35 can calculate the current reference value at the reference point by using the building information, the current measured atmospheric pressure value by the barometric pressure sensor, and the current measured temperature by the environmental temperature sensor 23. It is preferable that the reference value calculation unit 35 updates the conventional reference value every time a predetermined condition is satisfied and applies it to all the workers A and B. By doing so, the work management by this system 1 can be made more accurate.

[6] When the work determination unit 37 detects that the positional relationship between the plurality of workers A and B is invalid, the work determination unit 37 displays a warning on the terminal 20 or records that the warning has been given, depending on the type of illegality. It is stored in the action history storage unit 39, or at least one of them is executed. That is, when fraud is detected, it is possible to display a warning on the terminal 20, store only the record in the action history storage unit 39 without displaying it, or execute both the warning display and the record storage. be.
[7] The warning output unit 38 outputs a signal for activating a warning device capable of warning by sound, vibration, or at least one of the screens. Alternatively, the warning output unit 38 may directly issue a warning by sound, vibration, screen, or a combination thereof. As a result, when the positional relationship between the workers A and B is incorrect, it is possible to help prevent erroneous work or accident by outputting a warning signal.

The work management method (the present method) according to the embodiment of the present invention can also be summarized as follows.
[8] This method is a work management method that tracks the action histories of a plurality of workers A and B who perform elevator work and outputs warning signals as appropriate to contribute to the prevention of erroneous work or accidents. Is. That is, this method is a method of performing work management using a terminal 20 carried by each of a plurality of workers A and B and a management server 30 capable of communicating with the terminal 20.

At least one of a plurality of workers A and B enters the building to be elevator work and obtains an entrance signal (steps S1 and S2). In the terminal 20, when the entrance / exit information processing unit 25 receives the entrance signal, the barometric pressure measuring unit 22 starts the barometric pressure measurement. The measured barometric pressure value is temporarily stored in the sensor value storage unit 24 of the terminal 20, and is subsequently notified to the management server 30 in real time (steps S3 and S4).

In the management server 30, building information including the height of the building to be elevator work, the altitude above sea level of the reference floor of the building, the floor information of the elevator, and the like are stored in the building information storage unit 34 in advance. Similarly, the work plan of the elevator work is stored in the work plan storage unit 33.

The management server 30 sets the atmospheric pressure measurement value notified when the admission signal is obtained from the terminal 20 as the reference atmospheric pressure (step S5). After that, in the management server 30, the barometric pressure / height conversion unit 36 refers to the reference barometric pressure and the building information of the building information storage section 34, and uses the time-series data of the barometric pressure values of the received workers A and B as the reference floor. Converted to height information for altitude above sea level. By such a procedure, the management server 30 starts tracking the action histories of the plurality of workers A and B (step S5).

Subsequently, the reference value calculation unit 35 of the management server 30 refers to the altitude information above sea level and the floor information of the reference floor of the building information storage unit 34, and calculates the barometric pressure / height conversion relationship. The latest reference atmospheric pressure for B is obtained and stored in the building information storage unit 34 (steps S9 and S10). By such a procedure, the tracking of the action history is continued for each of the plurality of workers A and B.

During the action history tracking, the work determination unit 37 refers to the work plan stored in the work plan storage unit 33, and the current positions of one A and the other B of the plurality of workers A and B are correct positions. Judge whether or not. (S13, S14). When the management server 30 detects that at least one of the positions of the plurality of workers A and B is invalid as a result, the management server 30 outputs a warning signal from the warning output unit 38 to the terminal 20 (steps S15 and S16).

According to this method, since the same operation and effect as that of the present system 1 can be obtained, it is possible to contribute to the prevention of erroneous work or accident in the elevator work.

Although there are some overlaps, the main points of this system 1 will be supplementarily explained as follows.
[supplement]
One embodiment of the present invention is for tracking the vertical behavior of a plurality of workers using a barometric pressure sensor that is easily equipped in a smart device in recent years. Further, as a practical example of tracking worker behavior by atmospheric pressure value, it is intended to provide a system (this system 1) capable of preventing erroneous work and accidents by determining the positional relationship between a plurality of workers A and B. However, the barometric pressure value and the conversion proportion from the change in the barometric pressure value to the vertical movement distance are easily affected by environmental changes, and it is necessary to correct the barometric pressure value in order to track the worker's behavior with high accuracy. be.

This system 1 tracks the action histories of a plurality of workers A and B who perform elevator work. The system 1 includes a terminal 20 carried by each of the plurality of workers A and B, and a management server 30 capable of communicating with the terminal 20, and the terminal 20 is a pressure measuring unit for measuring a pressure value. 22 The management server 30 has a processing unit 25 and a warning output unit 38 that outputs a warning signal when the positional relationship between the plurality of workers A and B is incorrect during the work, and the management server 30 prepares a work plan for the elevator work in advance. A reference value calculation that stores a work plan storage unit 33 for storing, a building information storage unit 34 that stores building information in advance, and corrects (recalculates) the reference value when a predetermined condition is satisfied. Based on the work plan, the unit 35, the pressure / height conversion unit 36 that converts the pressure value data of the plurality of workers A and B continuously transmitted from the terminal 20 into height information, and the plurality of workers A. , B A warning output that instructs the terminal 20 to display a warning when the positions of a plurality of workers A and B are incorrect based on the judgment results of the work determination unit 37 that confirms the positional relationship of the work determination unit 37 and the work determination unit 37. It has a unit 38 and an action history storage unit that stores the action histories of a plurality of workers A and B after the work is completed.

Further, the reference value is the atmospheric pressure value of the floor (reference floor) where a plurality of workers A and B enter and leave the building, and the work is performed from the difference between the instantaneous atmospheric pressure value during work for each worker and the reference value. Position information in the direction perpendicular to the reference floor for each person is calculated from the barometric pressure / height conversion unit 36. Then, in order to correct the tracking error due to the environmental change, the reference value calculation unit 35 determines the work position of any specific worker in the elevator work at each timing of a plurality of specific work points. The reference value is recalculated and stored together with the building information regarding the work point, and applied to all workers.

According to this system 1, the measured value of the barometric pressure measuring unit 22 of the terminal 20 carried by each of the plurality of workers A and B is converted into the moving distance in the height direction by the barometric pressure / height converting unit 36 as a reference. You can track the vertical movement history of all workers with respect to the floor.

Further, the reference value calculation unit 35 of the management server 30 sets a reference value together with building information about the work point at each timing of a plurality of specific work points where the work position of any specific worker is determined in the elevator work. By recalculating and applying to all workers, tracking error due to changes in the environment is corrected. Further, during the tracking, the positional relationship between the plurality of workers A and B can be confirmed based on the work plan information, and a warning can be issued from the terminal 20 when the positional relationship of the workers is incorrect.

[Additional Notes]
It is a work management system that manages a plurality of workers who carry out work on an elevator, and includes a terminal carried by each of the plurality of workers and a management server that communicates with each of the plurality of terminals. Each of the plurality of terminals has a measurement unit that fluctuates and outputs the measured value in the direction of gravity and a warning notification unit that notifies a warning signal, and the management server stores a work plan related to the work. When a predetermined condition is satisfied by storing the work plan storage unit, the building information storage unit that stores the building information regarding the gravity direction of the building to be the work, and the information of the reference point in the measurement in the gravity direction. , The reference value calculation unit that executes a predetermined calculation on the information of the reference point to obtain the reference value and applies the reference value to each of the plurality of workers with reference to the building information, and the reference value. And based on the conversion unit that calculates the relative value between the reference point and the measured value and converts it into the distance in the gravity direction, and the distance converted into the distance between each of the plurality of workers and the reference value. A warning signal is output from the work determination unit that calculates and compares this with the work plan to determine the suitability of the positional relationship between the plurality of workers, and the warning notification unit based on the determination result of the work determination unit. A work management system that has a warning output unit to output.

1 Work management system (this system), 2 vertical axis, 3 CPU, 4 memory, 5 communication unit, 6 input / output unit, 7 communication network, 10 elevator control panel, 11 and 21 management server (center) I / F unit, 12 Elevator control unit, 13 Correction signal reception unit, 14 Correction signal transmission unit, 20 Terminal (smart device), 22 Pressure measurement unit, 23 Environmental temperature measurement unit, 24 Sensor value storage unit, 25 Entrance / exit information processing unit, 26 Warning notification unit, 30 management server (center), 31 elevator I / F unit, 32 terminal (smart device) I / F unit, 33 work plan storage unit, 34 building information storage unit, 35 reference value calculation unit, 36 atmospheric pressure Height conversion unit (conversion unit), 37 work judgment unit, 38 warning output unit, 39 action history storage unit, A (should be located in the machine room) first worker, B (work on the car) second Worker

Claims (8)

It is a maintenance work management system that manages multiple workers who perform elevator maintenance work.
Terminals carried by workers and
The terminal is equipped with a management server for communication.
The terminal is provided with a measuring unit for measuring atmospheric pressure and a warning notification unit for outputting a warning.
The management server has a work plan storage unit that stores a work plan including the location information of the worker, and a work plan storage unit.
A conversion unit that converts atmospheric pressure into distance in the direction of gravity,
A work determination unit that obtains the position of the worker based on the converted distance and compares it with the position information of the worker stored in the work plan storage unit to determine the suitability of the positional relationship of a plurality of workers.
A maintenance work management system including a warning output unit that outputs a warning signal to the terminal when it is determined that the positional relationship of workers is inappropriate. The measuring unit is a barometric pressure sensor.
The work management system according to claim 1. The plurality of workers
With the first worker who should be in the machine room,
With a second worker working on the basket,
2 or more people including
The work determination unit
When the altitude of the first worker ≤ the altitude of the second worker,
It is determined that at least one of the first worker and the second worker has worked at an improper position.
The work management system according to claim 1. The work determination unit has a positional relationship between the plurality of workers when it detects that the second worker is located on the car by means of an on-cage switch arranged on the car. Judgment of correctness,
The work management system according to claim 3. The terminal further comprises an environmental temperature sensor for measuring the environmental temperature.
The management server further includes a reference value calculation unit that calculates a current reference value with the reference floor of the building subject to the maintenance work as a reference point and applies it to all workers.
Each time the predetermined condition is satisfied, the reference value calculation unit uses the building information including the altitude above sea level of the reference floor, the current barometric pressure value measured by the barometric pressure sensor, and the current measured temperature by the environmental temperature sensor. Calculate and update the reference value,
The work management system according to claim 2. When the work determination unit detects that the positional relationship between the plurality of workers is incorrect, the work determination unit displays a warning on the terminal depending on the type of the fraud, or stores a warning record in the action history provided in the management server. Store in a part, or at least do one,
The work management system according to claim 1. The warning output unit outputs a signal for activating a warning device capable of warning by sound, vibration, or at least one of the screens.
The work management system according to claim 1. It is a work management method that tracks the behavior history of multiple workers who perform work on the elevator.
In order to appropriately output a warning signal by using a terminal carried by each of the plurality of workers and a management server capable of communicating with the terminal.
At the terminal,
The entrance / exit information processing unit receives the entrance signal obtained by at least one of the plurality of workers entering the building to be elevator work, and the barometric pressure measuring unit measures the barometric pressure with a sensor. It is temporarily stored in the value storage unit, and after that, it is notified to the management server in real time.
In the management server
Building information including the height of the building, the altitude above sea level of the reference floor of the building, and the floor information of the elevator is stored in the building information storage unit in advance.
The work plan of the elevator work is stored in the work plan storage unit, and the work plan is stored.
The atmospheric pressure measurement value notified when the admission signal was obtained was set as the reference atmospheric pressure, and
The barometric pressure / height conversion unit refers to the reference barometric pressure and the building information of the building information storage section, and uses the time-series data of the barometric pressure values of each of the plurality of workers received as the height information with respect to the altitude above sea level of the reference floor. By converting to, the action history of each of the multiple workers can be tracked.
The reference value calculation unit refers to the altitude information of the reference floor and the floor information in the building information, and calculates the barometric pressure / height conversion relationship to obtain the latest barometric pressure for all workers and obtain the building. Store in the information storage section,
The work determination unit refers to the work plan stored in the work plan storage unit, determines whether or not the current positions of one and the other of the plurality of workers are correct positions.
When it is detected that at least one of the positions of the plurality of workers is incorrect, the warning output unit outputs a warning signal to the terminal.
Work management method.

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