Alarm system

Abstract

To provide an alarm system capable of improving accuracy of determining necessity of an alarm.SOLUTION: The alarm system 1 includes a management device 3, a terminal 5, and a communication device 4. The first detection unit 31 detects the three dimensional position of the terminal 5. A second detection part 32 detects a three dimensional position of a moving body moving in a hoistway. The determination unit 33 determines whether or not it is necessary to issue an alarm to the maintenance person in consideration of the positional relationship between the terminal 5 and the moving object on a plane. When the determination unit 33 determines that it is necessary to issue an alarm to the maintenance person, the alarm command unit 34 transmits an alarm command to the terminal 5.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to alarm systems. [Background technology]

[0002] Patent Document 1 describes a system for issuing an alarm to an elevator maintenance worker. The system described in Patent Document 1 includes a first sensor carried by the maintenance worker, a second sensor installed at the landing, and a third sensor installed on the moving body. The system determines whether a specific event has occurred based on the difference between the position detected by the second sensor and the position detected by the third sensor and the difference between the position detected by the second sensor and the position detected by the first sensor. When it is determined that a specific event has occurred, an alarm is issued from an alarm device. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2019-14582 Summary of the Invention [Problem to be solved by the invention]

[0004] In the system described in Patent Document 1, whether or not a specific event has occurred is essentially determined based on the distance between the second sensor and the third sensor and the distance between the second sensor and the first sensor. However, simply considering the distance between the sensors often results in a determination that a specific event has occurred even when there is no need to issue an alarm. In other words, the system described in Patent Document 1 has a problem in that it has poor accuracy in determining whether or not an alarm is required.

[0005] The present disclosure has been made to solve the above-mentioned problems, and an object of the present disclosure is to provide an alarm system that can improve the accuracy of determining whether an alarm is necessary. [Means for solving the problem]

[0006] The alarm system according to the present disclosure includes a management device connected to an elevator control device, a terminal carried by a maintenance worker, and a communication device that communicates with the management device and receives position information from the terminal. The management device includes a first detection unit that detects the three-dimensional position of the terminal based on the position information received from the terminal by the communication device, a second detection unit that detects the three-dimensional position of a moving object moving in the elevator shaft based on information acquired from the control device, a determination unit that determines whether or not an alarm needs to be issued to a maintenance worker based on the positions detected by the first detection unit and the positions detected by the second detection unit, taking into consideration the positional relationship between the terminal and the moving object on a plane, and an alarm command unit that transmits a command to the terminal to issue an alarm when the determination unit determines that an alarm needs to be issued to the maintenance worker.

[0007] The alarm system according to the present disclosure includes a management device connected to an elevator control device, a terminal carried by a maintenance worker, a tag attached to a moving object moving in a hoistway, and a communication device that communicates with the management device, receives position information from the terminal, and receives position information from the tag. The management device includes a first detection unit that detects a three-dimensional position of the terminal based on the position information received from the terminal by the communication device, a second detection unit that detects the three-dimensional position of the moving object based on the position information received from the tag by the communication device, a determination unit that determines whether or not an alarm needs to be issued to a maintenance worker based on the positions detected by the first detection unit and the second detection unit, taking into consideration the positional relationship between the terminal and the moving object on a plane, and an alarm command unit that transmits a command to the terminal to issue an alarm when the determination unit determines that an alarm needs to be issued to the maintenance worker. [Effects of the Invention]

[0008] The alarm system according to the present disclosure can improve the accuracy of determining whether an alarm is necessary. [Brief explanation of the drawings]

[0009] [Figure 1]FIG. 1 is a diagram illustrating an example of an alarm system according to a first embodiment. [Figure 2] 10 is a flowchart illustrating an example of the operation of the management device. [Figure 3] 10 is a flowchart illustrating an example of the operation of the terminal. [Figure 4] 10 is a flowchart illustrating another example of the operation of the management device. [Figure 5] 10 is a flowchart showing an example of the operation of the control device. [Figure 6] 10 is a flowchart illustrating another example of the operation of the terminal. [Figure 7] FIG. 2 illustrates an example of hardware resources of a management device. [Figure 8] FIG. 10 illustrates another example of hardware resources of the management device. DETAILED DESCRIPTION OF THE INVENTION

[0010] The following detailed description will be given with reference to the drawings. Duplicate descriptions will be simplified or omitted as appropriate. In each drawing, the same reference numerals indicate the same or corresponding parts.

[0011] Embodiment 1 1 is a diagram showing an example of an alarm system 1 according to the first embodiment. The alarm system 1 includes an elevator device 2, a management device 3, a communication device 4, and a terminal 5. The elevator device 2 includes a car 6, a counterweight 7, a hoist 8, and a control device 9.

[0012] The car 6 moves up and down in a hoistway 10. The hoistway 10 is a vertically extending space formed in a building. As an example, a landing 11 where the car 6 can stop is provided on each floor of the building. The car 6 and counterweight 7 are suspended in the hoistway 10 by a rope 12. Figure 1 shows an example of an elevator system 2 using a 1:1 roping system.

[0013] The rope 12 is wound around a drive sheave of the hoisting machine 8. When the drive sheave rotates, the rope 12 moves in a direction corresponding to the direction in which the drive sheave rotates. The car 6 moves up or down the hoistway 10 depending on the direction in which the rope 12 moves. The counterweight 7 moves in the opposite direction to the direction in which the car 6 moves. The car 6 and the counterweight 7 are examples of moving bodies that move in the hoistway 10.

[0014] The control device 9 controls the hoisting machine 8. That is, the operation of the car 6 is controlled by the control device 9. The control device 9 includes, for example, an operation control unit 21 and a communication unit 22.

[0015] The management device 3 is connected to the control device 9 wirelessly or by wire. In a preferred example, the management device 3 is a maintenance terminal owned by a maintenance worker of the elevator device 2. The maintenance worker connects the management device 3 to the control device 9 when performing maintenance work on the elevator device 2, and disconnects the management device 3 from the control device 9 when the maintenance work is completed. Therefore, it is preferable that the management device 3 is a portable terminal. It is also preferable that the management device 3 is detachable from the control device 9. The management device 3 includes, for example, a first detection unit 31, a second detection unit 32, a determination unit 33, and an alarm command unit 34.

[0016] A maintenance worker of the elevator device 2 carries a terminal 5. The terminal 5 may be any type of device. As an example, the terminal 5 is a wearable device. The terminal 5 may also be a smartphone. The terminal 5 has a display 51. The display 51 is an example of an alarm. The terminal 5 may also be equipped with an alarm other than the display 51.

[0017] As an example, a UWB (Ultra-Wide Band) tag is built into the terminal 5. The tag stores identification information for identifying the terminal 5, i.e., identification information for identifying the user who possesses the terminal 5. In addition to the display 51, the terminal 5 includes, for example, an alarm control unit 53.

[0018] The communication device 4 communicates with the management device 3. The communication device 4 also wirelessly receives information transmitted by the terminal 5. The information includes identification information and location information. As an example, the communication device 4 is a UWB reader. In this case, the location information indicates the relative location of the terminal 5 with respect to the communication device 4.

[0019] The communication device 4 is preferably arranged so that it can receive information transmitted by the terminal 5 wherever the terminal 5 is located in the hoistway 10 or the landing 11. For example, the communication device 4 is installed in the landing 11 on the lowest floor. In a preferred example, a maintenance worker installs the communication device 4 in the landing 11 on the lowest floor when maintenance work on the elevator device 2 is being performed, and removes the communication device 4 when the maintenance work is completed. As another example, the communication device 4 may be permanently installed in the landing 11 on the lowest floor. The communication device 4 may be permanently installed in multiple landings 11. The communication device 4 may be permanently installed in the pit of the hoistway 10. The information received by the communication device 4 from the terminal 5 is transmitted to the management device 3.

[0020] The functions of the alarm system 1 will be described in detail below with reference to Fig. 2 and Fig. 3. Fig. 2 is a flowchart showing an example of the operation of the management device 3. Fig. 2 shows an example in which, in order to perform maintenance work on the elevator device 2, a maintenance worker connects the management device 3 to the control device 9 and installs the communication device 4 at the landing 11 on the lowest floor. The maintenance worker also carries a terminal 5.

[0021] The first detection unit 31 has a function of detecting the position of the terminal 5. The first detection unit 31 detects a position expressed in three dimensions as the position of the terminal 5. Hereinafter, a position expressed in three dimensions will also be simply referred to as a three-dimensional position. The first detection unit 31 may detect three-dimensional coordinates expressed by three orthogonal axes as the position of the terminal 5. The first detection unit 31 detects the three-dimensional position of the terminal 5 based on position information received by the communication device 4 from the terminal 5 (S101).

[0022] The second detection unit 32 has a function of detecting the position of the moving body, for example, the position of the car 6. The second detection unit 32 detects the position of the car 6 expressed in three dimensions. The second detection unit 32 may detect three-dimensional coordinates as the position of the car 6. For example, in the elevator device 2, rotation information from an encoder provided on the hoist 8 or a governor (not shown) is input to the control device 9. The communication unit 22 may transmit this rotation information or information equivalent to the rotation information to the management device 3. The second detection unit 32 detects the three-dimensional position of the car 6 based on the information acquired from the control device 9 (S102). Note that in S102, the second detection unit 32 may also detect the three-dimensional position of the counterweight 7 as the position of the moving body.

[0023] Next, the determination unit 33 determines whether or not it is necessary to issue an alarm to the maintenance worker carrying the terminal 5 (S103). The determination in S103 is made based on the position detected by the first detection unit 31 in S101 and the position detected by the second detection unit 32 in S102, while also taking into consideration the positional relationship between the terminal 5 and the car 6 on a plane.

[0024] Specifically, the alarm conditions for determining Yes in S103 are set in advance. As one example, the alarm conditions may be met when the terminal 5 is located directly below or directly above the car 6. As another example, the alarm conditions may be met when the terminal 5 is located directly below or directly above the car 6 and the distance between the terminal 5 and the car 6 is equal to or less than a first reference distance. Different alarm conditions may be adopted depending on the distance between the terminal 5 and the car 6. Different alarm conditions may be adopted depending on the position of the terminal 5, i.e., the location of the maintenance personnel. When the alarm conditions are met, Yes is determined in S103. In other words, the determination unit 33 determines that it is necessary to issue an alarm to the maintenance personnel.

[0025] If the determination in S103 is Yes, the alarm command unit 34 transmits a command to issue an alarm from the terminal 5 to the terminal 5 (S104). Hereinafter, this command will also be referred to as an alarm command. The alarm command unit 34 may transmit the alarm command directly to the terminal 5, or may transmit it to the terminal 5 via another device.

[0026] 3 is a flowchart showing an example of the operation of the terminal 5. The terminal 5 determines whether or not an alarm command has been received from the management device 3 (S201). When the terminal 5 receives the alarm command transmitted from the management device 3 in S104, the determination in S201 is Yes.

[0027] If S201 returns Yes, the alarm control unit 53 controls the alarm to generate an alarm (S202). As an example, the alarm control unit 53 may display a warning message on the display unit 51. The alarm control unit 53 may sound a buzzer. The alarm control unit 53 may generate vibrations. This allows the maintenance worker carrying the terminal 5 to notice that a moving object, such as a car 6, is approaching, and to quickly retreat to an area where they will not come into contact with the moving object.

[0028] In the example shown in this embodiment, the determination unit 33 determines whether or not it is necessary to issue an alarm to the maintenance worker carrying the terminal 5, taking into consideration the positional relationship between the terminal 5 and the car 6 on a plane. Therefore, in the example shown in this embodiment, it is possible to improve the accuracy of determining whether or not an alarm is necessary.

[0029] The following describes other functions that can be adopted by the alarm system 1. If possible, the alarm system 1 may adopt a combination of the following functions.

[0030] As shown in FIG. 1, the management device 3 may further include a mode identification unit 35. The mode identification unit 35 identifies the operation mode of the car 6. In the elevator device 2, the operation control unit 21 controls the operation of the car 6. The mode (operation mode) for controlling the operation of the car 6 may include an automatic operation mode in which the car 6 responds sequentially to registered calls, and a maintenance operation mode for performing maintenance work. The communication unit 22 transmits information indicating the operation mode being performed by the control device 9 to the management device 3.

[0031] The mode specification unit 35 specifies the operation mode of the car 6 based on the information acquired from the control device 9. The determination unit 33 may also make the determination in S103 based on the operation mode specified by the mode specification unit 35. For example, different operation modes may result in different speeds at which the car 6 moves. In such cases, the determination unit 33 can determine whether or not it is necessary to issue an alert to the maintenance worker carrying the terminal 5, taking into account the speed at which the car 6 moves.

[0032] As another example, the management device 3 may further include a work identification unit 36. The work identification unit 36 ​​identifies the maintenance work being performed by the maintenance worker. For example, the communication unit 22 transmits information indicating the status of the equipment provided in the elevator device 2 to the management device 3. The status of the equipment may include the movement status of the car 6, the open / close status of the doors, and the on / off status of the switches. The work identification unit 36 ​​identifies the maintenance work being performed by the maintenance worker based on the information acquired from the control device 9 and the location information received by the communication device 4 from the terminal 5. For example, if the terminal 5 is located in a pit of the elevator shaft 10 and a certain switch is in the on state, the work identification unit 36 ​​may identify that the maintenance worker is performing a specific work in the pit.

[0033] The determination unit 33 may also make the determination in S103 based on the maintenance work identified by the work identification unit 36. For example, depending on the maintenance work being performed, the car 6 may not move, i.e., the movement of the car 6 may be restricted. In such a case, the determination unit 33 can determine whether or not it is necessary to issue an alert to the maintenance person carrying the terminal 5, assuming that the car 6 will not move. Furthermore, depending on the maintenance work being performed, the maintenance person may frequently enter and exit the pit. In such a case, the determination unit 33 can also determine whether or not it is necessary to issue an alert to the maintenance person carrying the terminal 5, assuming that the maintenance person is in the pit.

[0034] As another example, the management device 3 may further include an operation command unit 37. Fig. 4 is a flowchart showing another example of the operation of the management device 3. As an example, the operation flow shown in Fig. 4 is performed after S104 in Fig. 2.

[0035] In the management device 3, the determination unit 33 determines whether or not it is necessary to stop the car 6 (S301). The determination in S301 is made based on the position detected by the first detection unit 31 and the position detected by the second detection unit 32, while also taking into consideration the positional relationship between the terminal 5 and the car 6 on a plane.

[0036] Specifically, the stop condition for determining "Yes" in S301 is set in advance. The stop condition is preferably stricter than the warning condition. When the stop condition is met, the warning condition may always be met.

[0037] As an example, when the terminal 5 is located directly below or directly above the car 6, if the distance between the terminal 5 and the car 6 is equal to or less than a first reference distance, an alarm condition may be established, and if the distance is equal to or less than a second reference distance that is shorter than the first reference distance, a stop condition may be established. For example, the first reference distance is 3 m, and the second reference distance is 1 m. Different stop conditions may be adopted depending on the distance between the terminal 5 and the car 6. Different stop conditions may be adopted depending on the position of the terminal 5, i.e., the location of the maintenance worker. If the stop condition is established, S301 is determined to be Yes. In other words, the determination unit 33 determines that it is necessary to stop the car 6.

[0038] If the result of the determination in S301 is Yes, the operation command unit 37 transmits a command to stop the car 6 to the control device 9 (S302). Hereinafter, this command will also be referred to as a stop command.

[0039] 5 is a flowchart showing an example of the operation of the control device 9. The control device 9 determines whether or not a stop command has been received from the management device 3 (S401). When the control device 9 receives the stop command transmitted from the management device 3 in S302, the determination in S401 is Yes.

[0040] If S401 returns Yes, the operation control unit 21 brings the car 6 to an emergency stop (S402). Note that if S401 returns Yes while the car 6 is stopped, the operation control unit 21 may prevent the car 6 from starting.

[0041] Other examples in which the stop condition is satisfied will be described below. In the two examples shown below, the management device 3 performs the operation flow shown in Fig. 4. The operation flow shown in Fig. 4 is preferably performed in parallel with the operation flow shown in Fig. 2.

[0042] 6 is a flowchart showing another example of the operation of the terminal 5. When the operation flow shown in FIG. 6 is performed in the terminal 5, the terminal 5 further includes a sensor 52 and a reporting unit 54. The sensor 52 detects the acceleration of the terminal 5.

[0043] In the terminal 5, it is determined whether the acceleration detected by the sensor 52 is greater than a threshold value (S501). The threshold value is set in advance. If the sensor 52 detects an acceleration value that exceeds the threshold value, the determination in S501 is Yes.

[0044] If the determination in S501 is Yes, the reporting unit 54 transmits information indicating that an abnormality has occurred to the management device 3 (S502). Hereinafter, this information will also be referred to as abnormality occurrence information. The reporting unit 54 may transmit the abnormality occurrence information directly to the management device 3, or may transmit the abnormality occurrence information to the management device 3 via another device such as the communication device 4.

[0045] In this example, the stop condition is met when the management device 3 receives abnormality occurrence information from the terminal 5. That is, a Yes determination is made in S301. As a result, the operation command unit 37 transmits a stop command to the control device 9 in S302. In the control device 9 that has received the stop command, the operation control unit 21 brings the car 6 to an emergency stop (S402). In this example, for example, a maintenance worker wearing the terminal 5 on his or her arm can realize the danger from the alarm issued in S202 and bring the car 6 to an emergency stop by waving his or her arm.

[0046] As another example, the management device 3 further includes a reception determination unit 38. For example, the terminal 5 transmits position information to the communication device 4 at regular intervals. The reception determination unit 38 determines whether the communication device 4 is receiving position information from the terminal 5 at the regular intervals based on information acquired from the communication device 4. In this example, the stop condition is met when the reception determination unit 38 does not determine that the communication device 4 is receiving position information from the terminal 5 at the regular intervals. That is, a Yes result is determined in S301. As a result, the operation command unit 37 transmits a stop command to the control device 9 at S302. In the control device 9 that has received the stop command, the operation control unit 21 brings the car 6 to an emergency stop (S402).

[0047] Examples of when the stopping condition is met are not limited to these.

[0048] 1, the management device 3 may further include a display control unit 39. The display control unit 39 causes a display to display a 3D image showing the interior of the elevator shaft 10. The display may be a display provided in the management device 3 or a display 51 provided in the terminal 5.

[0049] As an example, the display control unit 39 may display the three-dimensional image so that the danger area, the caution area, and the safety area are visible. The display control unit 39 may display the three-dimensional image so that only the danger area or only the safety area is visible. A danger area is, for example, an area where it is determined in S103 that a warning needs to be issued to a maintenance person when the maintenance person enters. A safety area is, for example, an area where there is no risk of the maintenance person coming into contact with a moving object such as the car 6 even if the maintenance person enters. This allows the maintenance person to know, by looking at the display, where they should be and where they should not be.

[0050] In the present embodiment, an example has been described in which the three-dimensional position of a moving object is detected based on information acquired from the control device 9. As another example, a tag may be provided on the moving object to detect the three-dimensional position of the moving object. The tag may be, for example, a UWB tag.

[0051] In this example, the communication device 4 receives the position information from the tag. In S102, the second detection unit 32 can detect the three-dimensional position of the moving object based on the position information that the communication device 4 receives from the tag.

[0052] 7 is a diagram showing an example of hardware resources of the management device 3. The management device 3 includes, as hardware resources, a processing circuit 60 including a processor 61 and a memory 62 which is a storage medium. The processing circuit 60 may include multiple processors 61. The processing circuit 60 may also include multiple memories 62.

[0053] In this embodiment, the units denoted by the reference numerals 31 to 39 indicate functions possessed by the management device 3. The functions of the units denoted by the reference numerals 31 to 39 can be realized by software written as a program, firmware, or a combination of software and firmware. The program is stored in memory 62. The management device 3 realizes the functions of the units denoted by the reference numerals 31 to 39 by executing the program stored in memory 62 by a processor 61 (computer).

[0054] The processor 61 is also called a CPU (Central Processing Unit), etc. The memory 62 may be a semiconductor memory or the like.

[0055] Fig. 8 is a diagram showing another example of hardware resources of the management device 3. In the example shown in Fig. 8, the management device 3 includes a processing circuit 60 including a processor 61, a memory 62, and dedicated hardware 63. Fig. 8 shows an example in which some of the functions of the management device 3 are realized by the dedicated hardware 63. All of the functions of the management device 3 may also be realized by the dedicated hardware 63.

[0056] The hardware resources of the control device 9 are similar to those shown in FIG. 7 or 8. The control device 9 has, as its hardware resources, a processing circuit including a processor and a memory serving as a storage medium. The processing circuit may include multiple processors. The processing circuit may include multiple memories. The control device 9 realizes the functions of the parts indicated by the reference numerals 21 and 22 by executing a program stored in the memory using a processor (computer). The control device 9 may have, as its hardware resources, a processing circuit including a processor, a memory, and dedicated hardware. Some or all of the functions of the control device 9 may be realized by dedicated hardware.

[0057] The hardware resources of the terminal 5 are similar to those shown in FIG. 7 or 8. The terminal 5 has, as its hardware resources, a processing circuit including a processor and a memory serving as a storage medium. The processing circuit may include multiple processors. The processing circuit may include multiple memories. The terminal 5 realizes the functions of the units indicated by the reference numerals 53 and 54 by executing a program stored in the memory using a processor (computer). The terminal 5 may have, as its hardware resources, a processing circuit including a processor, a memory, and dedicated hardware. Some or all of the functions of the terminal 5 may be realized by dedicated hardware.

[0058] Examples of aspects that may be included in the present disclosure are set forth below as appendices.

[0059] [Appendix 1] a management device connected to the elevator control device; A terminal held by a maintenance worker, a communication device that communicates with the management device and receives location information from the terminal; Equipped with The management device a first detection unit that detects a three-dimensional position of the terminal based on position information received by the communication device from the terminal; a second detection unit that detects a three-dimensional position of a moving object moving in the elevator shaft based on information acquired from the control device; a determination unit that determines whether or not it is necessary to issue an alert to the maintenance worker based on the position detected by the first detection unit and the position detected by the second detection unit, and taking into consideration a positional relationship on a plane between the terminal and the moving object; and an alarm command unit that, when the determination unit determines that an alarm needs to be issued to the maintenance personnel, transmits a command to issue an alarm from the terminal to the terminal; An alarm system with. [Appendix 2] The management device further includes a mode identification unit that identifies an operation mode of the moving object based on information acquired from the control device, The alarm system according to claim 1, wherein the determination unit determines whether or not an alarm needs to be issued to the maintenance personnel based also on the operation mode identified by the mode identification unit. [Appendix 3] the management device further includes a work identification unit that identifies the maintenance work being performed by the maintenance worker based on the information acquired from the control device and the location information received by the communication device from the terminal; 3. The alarm system according to claim 1, wherein the determination unit determines whether or not an alarm needs to be issued to the maintenance worker based also on the maintenance work identified by the work identification unit. [Appendix 4] The management device further includes an operation command unit, the determination unit determines whether or not it is necessary to stop the moving object based on the position detected by the first detection unit and the position detected by the second detection unit, and taking into consideration a positional relationship between the terminal and the moving object on a plane; 4. The warning system according to claim 1, wherein the operation command unit transmits a command to the control device to stop the moving body when the determination unit determines that the moving body needs to be stopped. [Appendix 5] The warning system according to any one of Supplementary Note 1 to Supplementary Note 4, wherein the management device further includes a display control unit that displays a three-dimensional image showing the inside of the elevator shaft on a display so that an area where the determination unit determines that an alert should be issued to the maintenance person when the maintenance person enters is visible. [Appendix 6] The terminal a sensor for detecting acceleration; a notification unit that transmits abnormality occurrence information to the management device when the sensor detects acceleration exceeding a threshold; Equipped with The alarm system according to any one of appendices 1 to 5, wherein the management device further comprises an operation command unit that, upon receiving the abnormality occurrence information from the notification unit, sends a command to the control device to stop the moving body. [Appendix 7] the terminal transmits location information to the communication device at regular intervals; The management device a reception determination unit that determines whether the communication device receives location information from the terminal at the constant period; 7. The alarm system according to any one of claims 1 to 6, further comprising an operation command unit that transmits a command to the control device to stop the moving body when the reception determination unit does not determine that location information is being received at the fixed period. [Appendix 8] a management device connected to the elevator control device; A terminal held by a maintenance worker, a tag attached to a moving body moving in the elevator shaft; a communication device that communicates with the management device, receives location information from the terminal, and receives location information from the tag; Equipped with The management device a first detection unit that detects a three-dimensional position of the terminal based on position information received by the communication device from the terminal; a second detection unit that detects a three-dimensional position of the moving object based on the position information received by the communication device from the tag; a determination unit that determines whether or not it is necessary to issue an alert to the maintenance worker based on the position detected by the first detection unit and the position detected by the second detection unit, and taking into consideration a positional relationship on a plane between the terminal and the moving object; and an alarm command unit that, when the determination unit determines that an alarm needs to be issued to the maintenance personnel, transmits a command to issue an alarm from the terminal to the terminal; An alarm system with.

[0060] The items set out in Appendix 2-7 or equivalent items may be added to Appendix 8. [Explanation of symbols]

[0061] 1 alarm system, 2 elevator device, 3 management device, 4 communication device, 5 terminal, 6 car, 7 counterweight, 8 hoist, 9 control device, 10 hoistway, 11 landing, 12 rope, 21 operation control unit, 22 communication unit, 31 first detection unit, 32 second detection unit, 33 judgment unit, 34 alarm command unit, 35 mode identification unit, 36 work identification unit, 37 operation command unit, 38 reception judgment unit, 51 display, 52 sensor, 53 alarm control unit, 54 reporting unit, 60 processing circuit, 61 processor, 62 memory, 63 dedicated hardware

Claims

1. a management device connected to the elevator control device; A terminal held by a maintenance worker, a communication device that communicates with the management device and receives location information from the terminal; Equipped with The management device a first detection unit that detects a three-dimensional position of the terminal based on position information received by the communication device from the terminal; a second detection unit that detects a three-dimensional position of a moving object moving in the elevator shaft based on information acquired from the control device; a determination unit that determines whether or not it is necessary to issue an alert to the maintenance worker based on the position detected by the first detection unit and the position detected by the second detection unit, and taking into consideration a positional relationship on a plane between the terminal and the moving object; and an alarm command unit that, when the determination unit determines that an alarm needs to be issued to the maintenance personnel, transmits a command to issue an alarm from the terminal to the terminal; An alarm system with.

2. The management device further includes a mode identification unit that identifies an operation mode of the moving object based on information acquired from the control device, The alarm system according to claim 1 , wherein the determining unit determines whether or not it is necessary to issue an alarm to the maintenance personnel based on the operation mode identified by the mode identifying unit.

3. the management device further includes a work identification unit that identifies the maintenance work being performed by the maintenance worker based on the information acquired from the control device and the location information received by the communication device from the terminal; 3. The alarm system according to claim 1, wherein the determining unit determines whether or not it is necessary to issue an alarm to the maintenance worker based on the maintenance work identified by the work identifying unit.

4. The management device further includes an operation command unit, the determination unit determines whether or not it is necessary to stop the moving object based on the position detected by the first detection unit and the position detected by the second detection unit, and taking into consideration a positional relationship between the terminal and the moving object on a plane; 3. The alarm system according to claim 1, wherein the operation command unit transmits a command to the control device to stop the moving object when the determination unit determines that the moving object needs to be stopped.

5. 3. The alarm system according to claim 1 or claim 2, wherein the management device further includes a display control unit that displays a three-dimensional image showing the inside of the elevator shaft on a display so that an area determined by the determination unit as requiring an alarm to be issued to the maintenance person when the maintenance person enters can be seen.

6. The terminal a sensor for detecting acceleration; a notification unit that transmits abnormality occurrence information to the management device when the sensor detects acceleration exceeding a threshold; Equipped with 3. The alarm system according to claim 1, wherein the management device further comprises an operation command unit that, when receiving the abnormality occurrence information from the notification unit, sends a command to the control device to stop the moving body.

7. the terminal transmits location information to the communication device at regular intervals; The management device a reception determination unit that determines whether the communication device receives location information from the terminal at the constant period; 3. The alarm system according to claim 1, further comprising an operation command unit that sends a command to the control device to stop the moving body when the reception determination unit does not determine that location information is being received at the fixed period.

8. a management device connected to the elevator control device; A terminal held by a maintenance worker, a tag attached to a moving body moving in the elevator shaft; a communication device that communicates with the management device, receives location information from the terminal, and receives location information from the tag; Equipped with The management device a first detection unit that detects a three-dimensional position of the terminal based on position information received by the communication device from the terminal; a second detection unit that detects a three-dimensional position of the moving object based on the position information received by the communication device from the tag; a determination unit that determines whether or not it is necessary to issue an alert to the maintenance worker based on the position detected by the first detection unit and the position detected by the second detection unit, and taking into consideration a positional relationship on a plane between the terminal and the moving object; and an alarm command unit that, when the determination unit determines that an alarm needs to be issued to the maintenance personnel, transmits a command to issue an alarm from the terminal to the terminal; An alarm system with.

Images