JP2020083535A - Notifying system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technique for assisting in ensuring higher safety during elevator maintenance work.
SOLUTION: A notification system for notifying a worker during maintenance work of an elevator, a detection unit for detecting a motion of the worker, a notification unit for notifying the worker, and a detection unit detected by the detection unit. A value is acquired, and it is determined whether the elevator hall door is opened based on the detected value, it is determined that the hall door is opened, and the elevator car is on the floor where the worker is. And a control unit that controls the notification unit so as to notify the worker when the operator is not in the prescribed position.
[Selection diagram] Figure 2

Description

The present invention relates to a technique of notifying a worker when performing maintenance work on an elevator.

In the maintenance work of an elevator, there is an item in which a maintenance worker rides on the elevator car to perform various inspections and maintenance. At this time, the maintenance worker opens the landing door by using a dedicated external opening key, visually confirms whether the car is at a position where the car can be safely boarded, and then gets on the car.

As a conventional technique, there has been disclosed a technique in which, when any abnormality occurs in a maintenance worker during maintenance work of an elevator, the abnormality is detected and the abnormality is notified (for example, Patent Document 1).

JP, 2017-160036, A

In order to determine whether the elevator car is in a safe riding position, the maintenance worker visually confirms it, but it is also required to ensure higher safety. Further, in the technique of Patent Document 1, the maintenance worker is notified after an abnormality occurs, but it is naturally preferable to prevent this before the abnormality occurs.

It is an object of the present invention to provide a technique that assists in ensuring higher safety during elevator maintenance work.

According to the present invention, there is provided a notification system for notifying a worker during maintenance work of an elevator, the detection unit detecting the motion of the worker, the notification unit notifying the worker, and the detection unit detected by the detection unit. A value is acquired, and it is determined whether the elevator hall door is opened based on the detected value, it is determined that the hall door is opened, and the elevator car is on the floor where the worker is. And a control unit that controls the notification unit so as to notify the worker when the operator is not in the prescribed position.

It can assist in ensuring a higher degree of safety during elevator maintenance work.
Problems, configurations, and effects other than those described above will be clarified by the following description of the embodiments.

It is an elevator schematic diagram. It is a figure which shows one state when a maintenance worker opens a landing door. It is a figure which shows the hand of a maintenance worker when opening a landing door. It is a figure which shows the wearable terminal which concerns on embodiment, and the maintenance worker who attached the smart glass. It is a figure which shows the hardware structural example of the field terminal and wearable terminal which concern on embodiment. It is a figure which illustrates the signal waveform which the wearable terminal which concerns on embodiment detects. It is a figure which shows the operation example which concerns on embodiment, and is a flowchart regarding a communication process. It is a figure showing an example of operation concerning an embodiment, and is a flow chart about processing which notifies a position of a car. It is a flow chart which shows the example of whole operation concerning an embodiment.

Hereinafter, the notification system according to the embodiment will be described with reference to the drawings.

FIG. 1 is a diagram showing an outline of an elevator according to the embodiment. The elevator 100 has a car 1 and a counterweight 2 connected by a main rope 7, and a hoisting machine 3 for raising and lowering these.

The hoisting machine 3 drives the main rope 7 to raise and lower the car 1 and the counterweight 2 through the pulleys 4, 5 and 6 in a hoistway 8 in a sliding manner. The hoisting machine 3 raises and lowers the car 1 by increasing and decreasing the number of rotations. The car 1 and the counterweight 2 are respectively guided by a pair of guide rails (not shown) to move up and down in the hoistway 8.

A plurality of beacons 10 are intermittently provided at predetermined positions in the ascending/descending direction in the hoistway 8, and irradiate radio waves or infrared rays to determine which position the car 1 is currently moving or stopping. To detect.

The control panel 9 controls the drive of the hoisting machine 3 to move the car 1 up and down to move it to each floor or stop it at each floor. In addition, the control panel 9 determines which position the car 1 is currently at based on the signal indicating the current position transmitted from the beacon 10 and stores it.

The access point 20 is a device that relays data transmission/reception between devices that perform wireless communication. The access point 20 of the present embodiment relays at least the communication between the control panel 9 and the field terminal 14 described later, and also relays the communication between the field terminal 14 and the wearable terminal 12 and smart glasses 17 described later. .. The access point 20 of the present embodiment is provided on each floor, and the output intensity of the radio waves is adjusted so that communication is established only with the field terminal 14, the wearable terminal 12, and the smart glasses 17 located on the same floor. There is. In other words, the radio wave intensity of each access point 20 is adjusted so that it cannot communicate with the devices located on other floors. In addition, in order to reduce the number of access points 20 installed, communication may be established across floors. Further, the access point 20 and the control panel 9 may be connected by a wired cable (LAN cable) via a switching HUB or a relay device such as a router.

FIG. 2 is a diagram showing a situation in which the worker 13 opens the landing door 18 and tries to get on the car 1 (on the frame of the car 1), and FIG. FIG. 7 is a diagram of a hand when the landing door 18 is opened. Further, FIG. 4 is a diagram showing an overall image of the worker 13.

The worker 13 of the present embodiment carries out maintenance work on the elevator 100 by bringing the on-site terminal 14 such as a notebook computer or a smartphone in which maintenance work software has been introduced in advance. Further, as shown in FIG. 4, the worker 13 wears the smart glasses 17 which are eyeglass-type wearable terminals when performing maintenance work on the elevator 100. Further, the worker 13 wears an armband-type wearable terminal 12 equipped with sensors for detecting acceleration, angular velocity, myoelectric potential, sound, atmospheric pressure, etc. near both forearms of both wrists or both arms. ..

As shown in FIG. 3, in order to get on the car 1, the worker 13 unlocks the key located at the upper part of the landing door 18 using the external opening key 11 and pushes the landing door 18 sideways. Open. The worker 13 holds the external opening key 11 with one hand, extends his arm above the landing door 18, and inserts the external opening key 11 into the keyhole. By this operation, the landing door 18 is unlocked. Then, the worker 13 pushes the landing door 18 sideways with the other hand to open it, and gets on the car 1. Although the specific content will be described later, the wearable terminal 12 detects myoelectric potential, arm acceleration, angular velocity, and the like when the worker 13 is performing these operations. The wearable terminal 12 may also display these waveforms.

FIG. 5A is a diagram showing a hardware configuration of the field terminal 14. The site terminal 14 has a controller 101, an input device 110, and an output device 111. The controller 101 controls each hardware operating inside the field terminal 14. The controller 101 has the following configuration.

A CPU 102 (CPU: Central Processing Unit) expands a program stored in a ROM 104 (ROM: Read only memory) or an HDD 105 (HDD: Hard Disk Drive) to a RAM 103 (RAM: Random access memory) and executes an operation. It is a processing device. The CPU 102 comprehensively controls each hardware inside the controller 101 by executing a program. The RAM 103 is a volatile memory and is a work memory when the CPU 102 processes. The RAM 103 temporarily stores necessary data while the CPU 102 is executing a program.

The ROM 104 is a non-volatile memory, and stores a BIOS (Basic Input/Output System) executed by the CPU 102 when the field terminal 14 is activated, and firmware.

The HDD 105 is an auxiliary storage device that stores data in a nonvolatile manner. The HDD 105 stores programs executed by the CPU 102 and control data. In the present embodiment, programs and various data that provide each function described below are installed in the HDD 105 in advance.

The network I/F 106 is an interface board that controls data communication performed with an external device, and wirelessly communicates with an external device via the access point 20.

The input I/F 107 is an interface group that controls the input/output of signals with the input device 110. The output I/F 108 is an interface group that receives an instruction from the CPU 102 and causes the output device 111 to draw an image or output a sound.

The input device 110 is, for example, a keyboard, a mouse, a touch panel, etc., and the output device 111 is a flat monitor, a display, a speaker, etc.

FIG. 5B is a diagram showing a hardware configuration of the wearable terminal 12. The wearable terminal 12 has a controller 202 having a CPU 202, a RAM 203, and a ROM 204, a storage 205 as an auxiliary storage device, a network I/F 206 for performing wireless communication, an input I/F 207, and an output I/F 208.

The wearable terminal 12 has an acceleration sensor 211, an angular velocity sensor 212, a myoelectric potential sensor 213, and a sound collecting microphone 214 as sensors for detecting the motion of the worker. The wearable terminal 12 also has an atmospheric pressure sensor 215, which outputs a detection signal to the controller 201 via the input I/F 207. The value of this detection signal is then transmitted to the field terminal 14 via the network I/F.

The wearable terminal 12 includes a speaker 221, which notifies the operator 13 of a voice, a liquid crystal monitor 222 which displays an image, and a vibration generator 223 which generates vibration. These are devices mainly for notifying the worker 13 of a warning.

The hardware configuration of the smart glasses 17 is substantially the same as the hardware configuration of the wearable terminal 12, but the acceleration sensor, the angular velocity sensor, the myoelectric potential sensor, and the barometric pressure sensor may be omitted. Further, the wearable terminal 12 has a configuration capable of executing a program to perform advanced processing, but may have a configuration having only a sensor function, a notification function, and a communication function.

The notification system of the present embodiment has the above-described field terminal 14, wearable terminal 12, and smart glasses 17 in the configuration. Further, by having each of these devices, the notification system of the present embodiment can determine whether or not the car 1 is at a position where the car 1 can be safely boarded when the worker 13 opens the landing door 18. Then, when it is not possible to get in the vehicle, the notification system of the present embodiment issues a notification for alerting the worker 13. Hereinafter, details of this aspect will be described.

First, the worker 13 performs a predetermined operation on the field terminal 14 to notify the control panel 9 of a message for mode switching. As a result, the elevator 100 is switched to the maintenance mode, and the control panel 9 moves the car 1 to the floor where the worker 13 is located. At this time, the control panel 9 or a control system (not shown) that integrally controls the operation of the control panel 9 is based on the signal of the beacon 10 so that the car 1 is at a specified position (the worker 13 can safely place the car 1 on the car 1). A position at which the passenger can board (hereinafter referred to as a boarding position), and a distance (separation distance A in FIG. 2) indicating how far the passenger is from the boarding position) Then, the control panel 9 transmits the calculated separation distance A to the site terminal 14 at any time, and the site terminal 14 transfers the calculated separation distance A to either the wearable terminal 12 or the smart glasses 17, or both. To do. The wearable terminal 12 or the smart glasses 17 notifies the operator 13 of the separation distance A by voice or video. Based on this notification, the worker 13 can confirm whether the car 1 has arrived at the prescribed boarding position.

On the other hand, the site terminal 14 of the present embodiment determines whether the worker 13 has opened the landing door 18 based on the detection signal obtained from the wearable terminal 12. FIG. 6 shows an example of the waveform of data detected by the wearable terminal 12 (the amplitude of each waveform is omitted). The upper part of FIG. 6 shows the detection signal for one arm (here, the right arm) of the worker 13, and the lower part shows the detection signal for the other arm (here, the left arm). The waveform of the right arm and the waveform of the left arm may be reversed from each other due to the relationship of the dominant arm of the worker 13.

In FIG. 6, since the external unlock key 11 is used for unlocking, the acceleration sensor 211 and the angular velocity sensor 212 react when the worker 13 extends his/her right arm above the landing door 18 (SIG001). Next, when the worker 13 applies force and inserts the external release key 11 to unlock, the myoelectric potential sensor 213 responds (SIG002). Then, the microphone 214 responds to the sound when the door is unlocked (SIG003) and the sound when the fixed lock of the landing door 18 is released (SIG004).

In the wearable terminal 12 of the other left arm, the myoelectric potential sensor 213 responds when preparing to push the landing door 18 sideways after unlocking the landing door 18 (after SIG003), (SIG005). Then, after the fixed lock of the door is released (after SIG004), the acceleration sensor 211, the angular velocity sensor 212, and the myoelectric potential sensor 213 react when the door is pushed sideways while applying force (SIG006).

The wearable terminal 12 transmits the numerical data of these detection signals to the field terminal 14 via the access point 20 at any time. Then, the site terminal 14 determines whether the worker 13 has opened the landing door 18 based on whether various signal waveforms are detected in a predetermined condition and in a predetermined order. Specifically, the field terminal 14 specifies which of the right arm and the left arm wearable terminal 12 has detected the waveform. Then, the field terminal 14 determines the strength (amplitude) of the waveform, the generation order and generation time of the waveform shown in FIG. 6 (time from the start of detection by one sensor to the start of detection by another sensor, etc.). Based on this, it is determined whether the landing door 18 has been opened. In addition, here, the waveform template data when the door is opened is created in advance, stored in the HDD 105, and the on-site terminal 14 compares the template data with the detection signal so that the landing It is determined whether the door 18 has been opened. In addition to this, various analysis methods can be applied.

7 to 9 are flowcharts showing an operation example of this embodiment. FIG. 7 is a flow chart showing processing relating to communication, and FIG. 8 is a flow chart showing processing relating to the position of the car 1. Further, FIG. 9 is a flowchart showing an example of the overall operation of the notification system.

First, the communication process of FIG. 7 will be described. Upon receiving the signal (beacon signal) from the access point 20, the field terminal 14 outputs an association request. Upon receiving the association request, the access point 20 outputs an association response including a connection availability notification. When the connection is possible, the association is established between the field terminal 14 and the access point 20. Next, the authentication process is performed, and if the authentication is compatible, the TCP connection between the field terminal 14 and the control panel 9 is established (S001). Similarly, the wearable terminal 12 and the smart glasses 17 also perform an association process and an authentication process with the access point 20, and then establish a TCP connection with the field terminal 14 (S002).

When the connection is established, the wearable terminal 12 can transmit the values of the detection signals obtained by the various sensors to the field terminal 14 each time (S003). On the other hand, the control panel 9 can transmit the position of the car 1 to the field terminal 14 (S004).

Subsequently, a process of notifying the position of the car 1 will be described with reference to FIG. The control panel 9 receives from the field terminal 14 an instruction to switch to the maintenance mode and an instruction to stop the car 1 (S101). It is assumed that the stop instruction is added with information on which floor the worker 13 specifies by inputting on the site terminal 14 to stop.

The control panel 9 controls the drive of the hoisting machine 3 so that the car 1 moves to the boarding position on the designated floor, and based on the signal from the beacon 10, the boarding car 1 is moved from the current position to the boarding position. The distance to the position (separation distance A in FIG. 2) is calculated (S102). Then, the control panel 9 transmits the current position of the car 1 and the separation distance to the field terminal 14 to which the connection is established.

The site terminal 14 receives the current position and the separation distance and displays them on the output device 111 (S103). Then, the field terminal 14 transfers the received current position and the separated distance of the car 1 to either or both of the wearable terminal 12 and the smart glasses 17 to which the connection has been established. The wearable terminal 12 (or the smart glasses 17) receives these and displays the current position and the separation distance to the worker 13 via the liquid crystal monitor 222, or gives a voice notification to the worker 13 via the speaker 221. (S104).

Next, the overall operation will be described with reference to FIG. In addition, in the following description, various signals detected by the wearable terminal 12 are assumed to be transmitted to the field terminal 14 at any time.

The wearable terminal 12 detects the grip of the external open key 11 by the worker 13 using the myoelectric potential sensor 213 (S201), and uses the acceleration sensor 211 and the angular velocity sensor 212 to perform the operation of extending the arm above the landing door 18. It is detected by using (S202).

The wearable terminal 12 uses the myoelectric potential sensor 213 to detect the operation of inserting the external release key 11 into the keyhole with force and unlocking (S203), and using the microphone 214, the unlocking sound and the fixed lock of the door. The release sound of is detected (S204). Then, the wearable terminal 12 uses the myoelectric potential sensor 213 to detect the action of pushing the door sideways with a force (S205).

Then, the wearable terminal 12 uses the microphone 214 to detect what floor the worker 13 is speaking (for example, “3rd floor Yoshi!” that the worker 13 utters by confirming the finger) (S206). ), and the atmospheric pressure is detected using the atmospheric pressure sensor 215 (S207). The sound collected in step S206 and the atmospheric pressure value detected in step S207 are acquired in order to determine which floor the worker 13 is currently at.

The detected values up to this point of each sensor are transmitted from the wearable terminal 12 to the field terminal 14. The site terminal 14 determines whether the worker 13 has opened the landing door 18 based on these detected values (S208). Then, the field terminal 14 transmits the determination result that the opening of the door is completed to the wearable terminal 12 or the smart glasses 17.

The wearable terminal 12 (or the smart glasses 17) that has received the determination result that the opening of the door is completed emits a voice so as to confirm the position of the car 1 (S209). This transmission is performed by outputting a sound such as "please check the stop position of the car" or by displaying a similar message image on the liquid crystal monitor 222.

On the other hand, the site terminal 14 determines whether the position of the car 1 is a boarding position at which the worker 13 can safely board, based on the current separation distance transmitted from the control panel 9 (S210).

When the determination result of step S210 is “good”, a message to that effect is notified to the worker 13 via the wearable terminal 12 or the smart glasses 17 (S211). The worker 13 who confirms this message checks on the message by himself and then gets on the car 1.

When the determination result of step S210 is “No”, the wearable terminal 12 notifies the worker 13 of this (S211). The wearable terminal 12 outputs, for example, a sound such as "Please do not get in!" from the speaker 221 and displays a similar message from the liquid crystal monitor 222. In addition, the wearable terminal 12 vibrates the vibration generator 223 to notify the worker 13 that he/she cannot board. In the present embodiment, notification is made by combining all of vibration, audio, and video as described above, but any one or a part of them may be combined and notified.

When the determination result of step S210 is “No”, the site terminal 14 transmits to the control panel 9 the floor where the worker 13 is detected in steps S206 and S207 described above. At the same time, the field terminal 14 transmits an instruction message to the control panel 9 so as to move the car 1 to the boarding position corresponding to the floor. The control panel 9 receives the transmitted floor number and the instruction message, and carries out the setup operation of the car to the boarding position on the floor (S213). As a result, even if the worker 13 mistakenly specifies the floor in step S101 of FIG. 8, this can be corrected and the car 1 can be moved to the boarding position on the regular floor.

In addition, in order to specify the floor on which the worker 13 is located, in the present embodiment, as shown in steps S206 and S207, the atmospheric pressure, the vocalization sound of the worker, and the like are used, but the access points 20 installed on each floor are May be used to identify the floor. In this case, the field terminal 14 identifies which access point 20 is relaying the data and acquires the identification information (eg, MAC address) of the access point 20. Then, the site terminal 14 determines the worker 13 based on the acquired identification information and the correspondence table (for example, the table in which the identification information such as the MAC address and the installation floor are associated with each other) stored in the storage device in advance. Identify the floor on which you are located.

The detection unit corresponds to the wearable terminal 12 of the embodiment. The notification unit corresponds to the wearable terminal 12, the smart glasses 17, or the output device 111 of the field terminal 14 of the embodiment. The control unit corresponds to the on-site terminal 14. The above-described operation of the field terminal 14 may be performed by the wearable terminal 12 or the smart glasses 17 to handle them as a control unit.

Further, in the present embodiment, the system having each device of the wearable terminal 12, the smart glasses 17, and the field terminal 14 is used as the notification system, but the present invention is not limited to this configuration, and the wearable terminal 12 alone may be used as the notification system. Is.

According to this embodiment, it is possible to determine whether or not it is possible to safely board the elevator, and to alert the operator when it is not possible to board safely. As a result, it is possible to assist in ensuring a higher degree of safety during elevator maintenance work.

It should be noted that the present invention is not limited to the above-described embodiment, and various modifications are included. For example, the above-described embodiments have been described in detail in order to explain the present invention in an easy-to-understand manner, and are not necessarily limited to those including all the configurations described. Further, a part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of one embodiment. Further, it is possible to add/delete/replace other configurations with respect to a part of the configurations of the respective embodiments. Further, the above-mentioned respective configurations, functions, processing units, processing means, etc. may be realized by hardware by designing a part or all of them with, for example, an integrated circuit. Further, each of the above-described configurations, functions, and the like may be realized by software by a processor interpreting and executing a program that realizes each function. Information such as a program, a table, and a file that realizes each function can be stored in a memory, a recording device such as a hard disk and an SSD (Solid State Drive), or a recording medium such as an IC card, an SD card, and a DVD.

1: Car basket 9: Control panel 10: Beacon 11: External open key 12: Wearable terminal 14: Field terminal 17: Smart glass 18: Landing door 20: Access point 100: Elevator 211: Acceleration sensor 212: Angular velocity sensor 213: Muscle Potential sensor 214: microphone 215: atmospheric pressure sensor 221: speaker 222: liquid crystal monitor 223: vibration generator

Claims (5)

It is a notification system that notifies workers when performing elevator maintenance work.
A detection unit that detects the motion of the worker,
A notification unit for notifying the worker,
Acquires the value detected by the detection unit, and determines whether the elevator hall door has been opened based on the detected value, determines that the hall door has been opened, and the elevator car If not in a prescribed position according to the floor where the worker is, a control unit that controls the notification unit to notify the worker,
Notification system with. In the notification system according to claim 1,
The detection unit detects the acceleration of the worker's arm, angular velocity, myoelectric potential,
The notification system, wherein the control unit determines that the landing door of the elevator is opened when the acceleration, the angular velocity, and the myoelectric potential are detected by the detection unit in a predetermined condition and in a predetermined order. In the notification system according to claim 1,
The notification system, wherein the control unit transmits an instruction message to move the car to the specified position when the car of the elevator is not at the specified position. In the notification system according to claim 1,
The detection unit and the notification unit are armband-type wearable terminals worn by the worker, and when the elevator car is not in the specified position, vibration, voice, or image, or a combination thereof. A notification system characterized by making notifications. In the notification system according to claim 1,
The detection unit further detects a vocal sound of the worker and atmospheric pressure,
The control unit is
Based on the value of the vocalization sound or atmospheric pressure of the worker detected by the detection unit, specify the floor where the worker is,
A notification system characterized by determining whether or not the car is located at the specified position based on the current position of the car, which is acquired by a control panel that controls the elevation of the car.

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