Alarm system

Abstract

The present invention provides an alarm system capable of improving the accuracy of determining whether or not an alarm is necessary. An alarm system (1) is provided with 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). The second detection unit (32) detects the three-dimensional position of a moving body moving in the hoistway. A determination unit (33) determines whether or not it is necessary to give an alarm to the maintenance personnel, taking into account the positional relationship between the terminal (5) and the moving body on the plane. An alarm command unit (34) transmits an alarm command to the terminal (5) when it is determined by the determination unit (33) that the maintenance personnel need to be alarmed.

Description

Technical Field

[0001] This invention relates to alarm systems. Background Technology

[0002] Patent Document 1 describes a system for alerting elevator maintenance personnel. The system described in Patent Document 1 includes a first sensor carried by the maintenance personnel, a second sensor installed at each landing, and a third sensor installed on the moving part of the elevator. In this system, a specific phenomenon is determined to have occurred based on the difference between the positions detected by the second and third sensors, and the difference between the positions detected by the second and first sensors. When a specific phenomenon is determined to have occurred, an alarm is triggered from an alarm device.

[0003] Patent Document 1: Japanese Patent Application Publication No. 2019-14582

[0004] In the system described in Patent Document 1, the determination of whether a specific phenomenon has occurred is essentially based on the distance between the second and third sensors and the distance between the second and first sensors. However, if only the distance between the sensors is considered, it frequently results in a specific phenomenon being determined to have occurred even when no alarm is needed. In other words, the system described in Patent Document 1 suffers from poor accuracy in determining whether an alarm is needed. Summary of the Invention

[0005] This invention was made to solve the problems described above. The object of this invention is to provide an alarm system that can improve the accuracy of determining whether an alarm is needed.

[0006] The alarm system of the present invention includes: a management device connected to an elevator control device; a terminal held by maintenance personnel; and a communication device that communicates with the management device and receives location information from the terminal. The management device includes: a first detection unit that detects the three-dimensional position of the terminal based on the location 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 shaft based on information obtained from the control device; a determination unit that determines whether an alarm needs to be issued to maintenance personnel based on the positions detected by the first and second detection units, taking into account the positional relationship between the terminal and the moving object on a plane; and an alarm command unit that sends an alarm command to the terminal when the determination unit determines that an alarm needs to be issued to maintenance personnel.

[0007] The alarm system of the present invention includes: a management device connected to an elevator control device; a terminal held by maintenance personnel; a tag disposed on a moving body moving in the shaft; and a communication device that communicates with the management device, receives location information from the terminal, and receives location information from the tag. The management device includes: a first detection unit that detects the three-dimensional position of the terminal based on the location information received from the terminal by the communication device; a second detection unit that detects the three-dimensional position of the moving body based on the location information received from the tag by the communication device; a determination unit that determines whether an alarm needs to be issued to the maintenance personnel based on the positions detected by the first detection unit and the second detection unit, taking into account the positional relationship between the terminal and the moving body on a plane; and an alarm command unit that sends an alarm command to the terminal when the determination unit determines that an alarm needs to be issued to the maintenance personnel.

[0008] The alarm system according to the present invention can improve the accuracy of determining whether an alarm is needed. Attached Figure Description

[0009] Figure 1 This is a diagram illustrating an example of the alarm system in Implementation 1.

[0010] Figure 2 This is a flowchart illustrating an example of the operation of a management device.

[0011] Figure 3 This is a flowchart representing an example of a terminal action.

[0012] Figure 4 This is a flowchart illustrating other actions of the management device.

[0013] Figure 5 This is a flowchart illustrating an example of the operation of a control device.

[0014] Figure 6 This is a flowchart representing other actions of the terminal.

[0015] Figure 7 This is a diagram illustrating an example of the hardware resources of a management device.

[0016] Figure 8 This is a diagram representing other examples of the hardware resources of the management device.

[0017] Label Explanation

[0018] 1: Alarm system; 2: Elevator unit; 3: Management unit; 4: Communication unit; 5: Terminal; 6: Car; 7: Counterweight; 8: Traction machine; 9: Control unit; 10: Hoistway; 11: Landing station; 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 determination unit; 36: Operation determination unit; 37: Action command unit; 38: Receiving and judgment unit; 51: Display; 52: Sensor; 53: Alarm control unit; 54: Notification unit; 60: Processing circuit; 61: Processor; 62: Memory; 63: Dedicated hardware. Detailed Implementation

[0019] The following is a detailed description with reference to the accompanying drawings. Repetitive descriptions have been simplified or omitted as appropriate. In the drawings, the same reference numerals denote the same or equivalent parts.

[0020] Implementation Method 1

[0021] Figure 1 This diagram illustrates an example of alarm system 1 in embodiment 1. Alarm system 1 includes an elevator unit 2, a management unit 3, a communication unit 4, and a terminal 5. Elevator unit 2 includes a car 6, a counterweight 7, a traction machine 8, and a control unit 9.

[0022] The car 6 moves up and down in the hoistway 10. The hoistway 10 is a space that extends vertically from the building. As an example, each floor of the building has a landing 11 where the car 6 can stop. The car 6 and the counterweight 7 are suspended from the hoistway 10 by ropes 12. Figure 1 An elevator device 2 with a 1:1 rope winding method is shown as an example.

[0023] Rope 12 is wound around the drive sheave of the traction machine 8. As the drive sheave rotates, rope 12 moves in the direction corresponding to the direction of rotation. The car 6 moves upward or downward within the hoistway 10 depending on the direction of rope 12's movement. The counterweight 7 moves in the opposite direction to the movement of the car 6. The car 6 and counterweight 7 are examples of moving bodies within the hoistway 10.

[0024] The control device 9 controls the traction 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.

[0025] The management device 3 is connected to the control device 9 wirelessly or via a wired connection. In a preferred embodiment, the management device 3 is a maintenance terminal held by the maintenance personnel of the elevator device 2. The maintenance personnel connect the management device 3 to the control device 9 during maintenance work on the elevator device 2, and disconnect the management device 3 from the control device 9 after the maintenance work is completed. Therefore, the management device 3 is preferably a portable terminal. Furthermore, it is preferable that the management device 3 can be attached to and detached 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.

[0026] The maintenance personnel of elevator unit 2 hold terminal 5. Terminal 5 can be any type of device. As an example, terminal 5 is a wearable device. Terminal 5 can also be a smartphone. Terminal 5 has a display 51. Display 51 is an example of a notification device. Terminal 5 can also have a notification device other than display 51.

[0027] As an example, terminal 5 has a built-in UWB (Ultra-Wide Band) tag. This tag stores identification information used to identify terminal 5, that is, identification information used to identify the user holding terminal 5. In addition to the display 51, terminal 5 also includes, for example, an alarm control unit 53.

[0028] Communication device 4 communicates with management device 3. Additionally, communication device 4 wirelessly receives information transmitted by terminal 5. This information includes identification information and location information. For example, communication device 4 is a UWB reader. In this case, the location information indicates the relative position of terminal 5 with respect to communication device 4.

[0029] The communication device 4 is preferably configured to receive information from the terminal 5 regardless of where the terminal 5 is located in the hoistway 10 or the landing 11. For example, the communication device 4 is located in the lowest landing 11. In a preferred embodiment, maintenance personnel place the communication device 4 in the lowest landing 11 when performing maintenance work on the elevator unit 2, and remove the communication device 4 after the maintenance work is completed. As another example, the communication device 4 may also be permanently located in the lowest landing 11. The communication device 4 may also be permanently located in multiple landings 11. The communication device 4 may also be permanently located in the pit of the hoistway 10. Information received from the terminal 5 by the communication device 4 is sent to the management device 3.

[0030] The following also refers to Figure 2 as well as Figure 3 The functions of alarm system 1 are described in detail. Figure 2 This is a flowchart illustrating an example of the operation of the management device 3. Figure 2This example illustrates an elevator unit 2 where, at the start of maintenance work, the maintenance personnel have connected the management device 3 to the control device 9 and installed the communication device 4 on the lowest floor, station 11. Additionally, the maintenance personnel possess a terminal 5.

[0031] The first detection unit 31 has the function of detecting the position of the terminal 5. The first detection unit 31 detects the position of the terminal 5 as a three-dimensional position. Hereinafter, the position represented in three dimensions will be referred to as the three-dimensional position. The first detection unit 31 can also detect the three-dimensional coordinates represented 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 the position information received from the terminal 5 by the communication device 4 (S101).

[0032] The second detection unit 32 has the function of detecting the position of a moving body, such as the position of the car 6. The second detection unit 32 detects the position represented in three dimensions as the position of the car 6. The second detection unit 32 can also detect three-dimensional coordinates as the position of the car 6. For example, in the elevator system 2, rotational information from an encoder installed on the traction machine 8 or a speed governor (not shown) is input to the control device 9. The communication unit 22 can also send this rotational information or information equivalent to rotational information to the management device 3. Based on this information obtained from the control device 9, the second detection unit 32 detects the three-dimensional position of the car 6 (S102). Additionally, the second detection unit 32 can also detect the three-dimensional position of the counterweight 7 as the position of the moving body in S102.

[0033] Next, the determination unit 33 determines whether an alarm needs to be issued to the maintenance personnel holding the terminal 5 (S103). 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, the determination in S103 also takes into account the positional relationship between the terminal 5 and the car 6 on the plane.

[0034] Specifically, alarm conditions are preset for determination in S103. For example, the alarm condition may be met if terminal 5 is located directly below or above car 6. Another example is if terminal 5 is located directly below or above car 6, and the distance between terminal 5 and car 6 is less than or equal to a first reference distance. Different alarm conditions may be used depending on the distance between terminal 5 and car 6. Different alarm conditions may also be used depending on the location of terminal 5, i.e., the location of maintenance personnel. If the alarm condition is met, it is determined to be met in S103. That is, the determination unit 33 determines that an alarm needs to be issued to maintenance personnel.

[0035] If the determination is yes in S103, the alarm command unit 34 sends an alarm command to the terminal 5 for issuing an alarm from the terminal 5 (S104). Hereinafter, this command will also be referred to as the alarm command. The alarm command unit 34 can send the alarm command directly to the terminal 5, or it can send it to the terminal 5 via other devices.

[0036] Figure 3 This is a flowchart illustrating an example of the operation of terminal 5. In terminal 5, it is determined whether an alarm command has been received from management device 3 (S201). When terminal 5 receives an alarm command sent from management device 3 in S104, it is determined to be yes in S201.

[0037] If the determination in S201 is yes, the alarm control unit 53 controls the alarm device to generate an alarm (S202). For example, the alarm control unit 53 can also display a warning on the display 51. The alarm control unit 53 can also sound a buzzer. The alarm control unit 53 can also generate vibration. Thus, the maintenance personnel holding the terminal 5 can notice that a moving object, such as the car 6, is approaching and can quickly retreat to an area where they will not come into contact with the moving object.

[0038] In the example shown in this embodiment, the determination unit 33 also considers the positional relationship between the terminal 5 and the car 6 on the plane to determine whether an alarm needs to be issued to the maintenance personnel holding the terminal 5. Therefore, according to the example shown in this embodiment, the accuracy of determining whether an alarm needs to be issued can be improved.

[0039] The following describes other functions that alarm system 1 can employ. If possible, alarm system 1 may also combine multiple functions as shown below.

[0040] like Figure 1 As shown, the management device 3 may also include a mode determination unit 35. The mode determination unit 35 determines the operating mode of the car 6. In the elevator device 2, the operation control unit 21 controls the operation of the car 6. The operating mode (operation mode) 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 sends information indicating the operating mode performed by the control device 9 to the management device 3.

[0041] The mode determination unit 35 determines the operating mode of the car 6 based on the information obtained from the control device 9. The determination unit 33 may also perform the determination in S103 based on the operating mode determined by the mode determination unit 35. For example, when the operating mode is different, the speed at which the car 6 moves may be different. In this case, the determination unit 33 can also consider the speed at which the car 6 moves to determine whether an alarm needs to be issued to the maintenance personnel holding the terminal 5.

[0042] As another example, the management device 3 may also include a work determination unit 36. The work determination unit 36 ​​determines the maintenance work being performed by the maintenance personnel. For example, the communication unit 22 sends information indicating the status of the equipment in the elevator unit 2 to the management device 3. This equipment status may include the movement status of the car 6, the opening and closing status of the doors, and the on / off status of switches. The work determination unit 36 ​​determines the maintenance work being performed by the maintenance personnel based on this information obtained 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 the pit of the hoistway 10 and a certain switch is in the on state, the work determination unit 36 ​​determines that the maintenance personnel are performing specific work within the pit.

[0043] The determination unit 33 can also perform the determination in S103 based on the maintenance operation determined by the operation determination unit 36. For example, depending on the ongoing maintenance operation, sometimes the car 6 does not move, that is, the movement of the car 6 is restricted. In this case, the determination unit 33 can determine whether an alarm needs to be issued to the maintenance personnel holding the terminal 5, based on the premise that the car 6 does not move. In addition, depending on the ongoing maintenance operation, sometimes the maintenance personnel frequently enter and exit the pit. In this case, the determination unit 33 can also determine whether an alarm needs to be issued to the maintenance personnel holding the terminal 5, based on the premise that the maintenance personnel are in the pit.

[0044] As another example, the management device 3 may also include an action command unit 37. Figure 4 This is a flowchart illustrating other actions of the management device 3. As one example, Figure 4 The action flow shown is in Figure 2 It will proceed after S104.

[0045] In the management device 3, the determination unit 33 determines whether the car 6 needs to be stopped (S301). Based on the position detected by the first detection unit 31 and the position detected by the second detection unit 32, the determination of S301 also takes into account the positional relationship between the terminal 5 and the car 6 on the plane.

[0046] Specifically, a stop condition is preset for determining "yes" in S301. The stop condition is preferably more stringent than the alarm condition. Even if the stop condition is met, the alarm condition can always be met.

[0047] As an example, if terminal 5 is located directly below or above car 6, and the distance between terminal 5 and car 6 is less than a first reference distance, then the alarm condition is met; if it is less than a second reference distance, which is shorter than the first reference distance, then the stop condition is met. For example, the first reference distance is 3m, and the second reference distance is 1m. Different stop conditions can also be used depending on the distance between terminal 5 and car 6. Different stop conditions can also be used depending on the location of terminal 5, i.e., the location of maintenance personnel. When the stop condition is met, it is determined to be yes in S301. That is, the determination unit 33 determines that car 6 needs to be stopped.

[0048] When the determination is yes in S301, the action command unit 37 sends a command to the control device 9 to stop the car 6 (S302). Hereinafter, this command will also be referred to as the stop command.

[0049] Figure 5 This is a flowchart illustrating an example of the operation of the control device 9. In the control device 9, it is determined whether a stop command has been received from the management device 3 (S401). When the control device 9 receives a stop command sent from the management device 3 in S302, it is determined to be yes in S401.

[0050] When the determination is yes in S401, the operation control unit 21 causes the car 6 to stop urgently (S402). Alternatively, if the determination is yes in S401 when the car 6 stops, the operation control unit 21 can also prevent the car 6 from starting.

[0051] The following describes other examples of the stopping condition being met. In the two examples shown below, the stopping condition is performed in management device 3. Figure 4 The action flow is shown. Figure 4 The preferred action flow shown is... Figure 2 The actions shown are performed in parallel.

[0052] Figure 6 This is a flowchart illustrating other action examples from terminal 5. (The process is described in the context of terminal 5.) Figure 6 In the illustrated operation sequence, terminal 5 also includes sensor 52 and a notification unit 54. Sensor 52 detects the acceleration of terminal 5.

[0053] In terminal 5, it is determined whether the acceleration detected by sensor 52 is greater than a threshold (S501). The threshold is preset. When sensor 52 detects an acceleration exceeding the threshold, it is determined to be true in S501.

[0054] If the determination is correct in S501, the notification unit 54 sends a message to the management device 3 indicating that an anomaly has occurred (S502). This message will also be referred to as the anomaly occurrence message below. The notification unit 54 can send the anomaly occurrence message directly to the management device 3, or it can send it to the management device 3 via other devices such as the communication device 4.

[0055] In this example, an anomaly information is received from terminal 5 via management device 3, thus establishing a stop condition. That is, it is determined to be true in S301. Consequently, action command unit 37 sends a stop command to control device 9 in S302. Upon receiving the stop command, operation control unit 21 in control device 9 causes the car 6 to stop urgently (S402). In this example, for instance, a maintenance personnel wearing terminal 5 on their arm notices the danger upon receiving an alarm in S202 and waves their arm, thereby causing the car 6 to stop urgently.

[0056] As another example, the management device 3 also includes a receiving determination unit 38. For example, the terminal 5 sends location information to the communication device 4 at a fixed period. Based on the information obtained from the communication device 4, the receiving determination unit 38 determines whether the communication device 4 has received location information from the terminal 5 at the aforementioned fixed period. In this example, if the receiving determination unit 38 does not determine that the communication device 4 has received location information from the terminal 5 at the aforementioned fixed period, the stop condition is met. That is, it is determined to be yes in S301. As a result, the operation command unit 37 sends a stop command to the control device 9 in S302. Upon receiving the stop command, the operation control unit 21 causes the car 6 to stop urgently (S402).

[0057] Examples of stopping conditions being met are not limited to this.

[0058] like Figure 1 As shown, the management device 3 may also include a display control unit 39. The display control unit 39 causes the display to show a three-dimensional image of the interior of the shaft 10. This display may be the display of the management device 3 or the display 51 of the terminal 5.

[0059] As an example, the display control unit 39 can also display the three-dimensional image in a way that allows for visual confirmation of danger zones, warning zones, and safe zones. The display control unit 39 can also display the three-dimensional image in a way that allows only visual confirmation of danger zones or safe zones. A danger zone is, for example, an area that, in S103, is determined to require an alarm for maintenance personnel when they enter that area. A safe zone is, for example, an area where, even if maintenance personnel enter, they will not come into contact with moving parts such as the car 6. Thus, maintenance personnel can observe the display to determine where they should or should not be.

[0060] In this embodiment, an example of detecting the three-dimensional position of a moving body based on information obtained from the control device 9 is described. As another example, a tag can also be placed on the moving body to detect its three-dimensional position. This tag could be, for example, a UWB tag.

[0061] In this example, the communication device 4 receives location information from the tag. In S102, the second detection unit 32 is able to detect the three-dimensional position of the moving body based on the location information received by the communication device 4 from the tag.

[0062] Figure 7 This diagram illustrates an example of the hardware resources of the management device 3. The management device 3 includes a processing circuit 60 as its hardware resources, comprising a processor 61 and a memory 62 as a storage medium. The processing circuit 60 may also include multiple processors 61. The processing circuit 60 may also include multiple memories 62.

[0063] In this embodiment, the parts indicated by reference numerals 31 to 39 represent the functions of the management device 3. The functions of each part indicated by reference numerals 31 to 39 can be implemented by software, firmware, or a combination of software and firmware described as a program. This program is stored in the memory 62. The management device 3 implements the functions of each part indicated by reference numerals 31 to 39 by the processor 61 (computer) executing the program stored in the memory 62.

[0064] The processor 61 is also known as a CPU (Central Processing Unit). The memory 62 can also be a semiconductor memory or the like.

[0065] Figure 8 This is another example of the hardware resources of management device 3. In Figure 8 In the example shown, the management device 3 has a processing circuit 60 that includes a processor 61, a memory 62, and dedicated hardware 63. Figure 8 This illustrates an example of implementing a portion of the functions of the management device 3 using dedicated hardware 63. Alternatively, all the functions of the management device 3 can be implemented using dedicated hardware 63.

[0066] Hardware resources of control device 9 and Figure 7 or Figure 8The example shown is the same. The control device 9 has processing circuitry as hardware resources, including a processor and memory as storage medium. This processing circuitry may also include multiple processors. This processing circuitry may include multiple memories. The control device 9 implements the functions of the parts shown in reference numerals 21 and 22 by having the processor (computer) execute programs stored in the memory. The control device 9 may also have processing circuitry including a processor, memory, and dedicated hardware as hardware resources. Some or all of the functions of the control device 9 may also be implemented using dedicated hardware.

[0067] Terminal 5's hardware resources and Figure 7 or Figure 8 The example shown is the same. Terminal 5 has processing circuitry as hardware resources, including a processor and memory as storage medium. This processing circuitry may also include multiple processors. This processing circuitry may include multiple memories. Terminal 5 implements the functions of the parts shown in reference numerals 53 and 54 by having the processor (computer) execute programs stored in the memory. Terminal 5 may also have processing circuitry including a processor, memory, and dedicated hardware as hardware resources. Some or all of the functions of terminal 5 may also be implemented by dedicated hardware.

[0068] Hereinafter, examples of the modes that may be included in the present invention are explicitly described as appendices.

[0069] [Postscript 1]

[0070] An alarm system includes: a management device connected to an elevator control device; a terminal held by maintenance personnel; and a communication device communicating with the management device and receiving location information from the terminal. The management device includes: a first detection unit that detects the three-dimensional position of the terminal based on the location 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 shaft based on information obtained from the control device; a determination unit that determines whether an alarm needs to be issued to the maintenance personnel based on the positions detected by the first and second detection units, taking into account the positional relationship between the terminal and the moving object on a plane; and an alarm command unit that sends an alarm command to the terminal when the determination unit determines that an alarm needs to be issued to the maintenance personnel.

[0071] [Postscript 2]

[0072] According to the alarm system described in Appendix 1, the management device further includes a mode determination unit that determines the operating mode of the mobile body based on information obtained from the control device, and the determination unit further determines whether an alarm needs to be issued to the maintenance personnel based on the operating mode determined by the mode determination unit.

[0073] [Postscript 3]

[0074] According to the alarm system described in Appendix 1 or Appendix 2, the management device further includes a job determination unit that determines the maintenance work being performed by the maintenance personnel based on information obtained from the control device and location information received by the communication device from the terminal. The determination unit further determines whether an alarm needs to be issued to the maintenance personnel based on the maintenance work determined by the job determination unit.

[0075] [Postscript 4]

[0076] According to any one of Appendix 1 to Appendix 3, the alarm system wherein the management device further comprises an action command unit, the determination unit determines whether the mobile body needs to be stopped based on the position detected by the first detection unit and the position detected by the second detection unit, taking into account the positional relationship between the terminal and the mobile body on the plane; when the determination unit determines that the mobile body needs to be stopped, the action command unit sends an instruction to the control device to stop the mobile body.

[0077] [Postscript 5]

[0078] According to any one of Appendix 1 to Appendix 4, the alarm system wherein the management device further comprises a display control unit that causes the display to show a three-dimensional image of the interior of the shaft in a manner that allows visual confirmation of an area that is determined by the determination unit to require an alarm to be issued to the maintenance personnel when the maintenance personnel enter the area.

[0079] [Postscript 6]

[0080] According to any one of Appendix 1 to Appendix 5, the alarm system comprises: a sensor that detects acceleration; and a notification unit that sends an anomaly occurrence information to the management device when the sensor detects an acceleration exceeding a threshold, wherein the management device further comprises an action command unit that, upon receiving the anomaly occurrence information from the notification unit, sends an instruction to the control device to stop the moving body.

[0081] [Postscript 7]

[0082] According to any one of Appendix 1 to Appendix 6, in the alarm system wherein the terminal sends location information to the communication device at a fixed period, the management device further comprises: a receiving determination unit that determines whether the communication device receives location information from the terminal at the fixed period; and an action command unit that, if the receiving determination unit does not determine that location information is received at the fixed period, sends a command to the control device to stop the moving body.

[0083] [Postscript 8]

[0084] An alarm system includes: a management device connected to an elevator control device; a terminal held by maintenance personnel; a tag disposed on a moving body moving in the shaft; and a communication device communicating with the management device, receiving location information from the terminal and from the tag. The management device includes: a first detection unit that detects the three-dimensional position of the terminal based on the location information received from the terminal by the communication device; a second detection unit that detects the three-dimensional position of the moving body based on the location information received from the tag by the communication device; a determination unit that determines whether an alarm needs to be issued to the maintenance personnel based on the positions detected by the first detection unit and the positions detected by the second detection unit, taking into account the positional relationship between the terminal and the moving body on a plane; and an alarm command unit that sends an alarm command to the terminal when the determination unit determines that an alarm needs to be issued to the maintenance personnel.

[0085] You may also add the items recorded in Notes 2-7 or equivalent items to Note 8.

Claims

1. An alarm system comprising: A management device that is connected to the elevator's control device; The terminal held by maintenance personnel; and A communication device that communicates with the management device and receives location information from the terminal. The management device includes: The first detection unit detects the three-dimensional position of the terminal based on the position information received by the communication device from the terminal. The second detection unit detects the three-dimensional position of the moving body moving in the shaft based on information obtained from the control device. The determination unit, based on the positions detected by the first detection unit and the positions detected by the second detection unit, and taking into account the positional relationship between the terminal and the moving body on the plane, determines whether an alarm needs to be issued to the maintenance personnel; and The alarm command unit sends an alarm command to the terminal when the determination unit determines that an alarm needs to be issued to the maintenance personnel.

2. The alarm system according to claim 1, wherein, The management device further includes a mode determination unit, which determines the operating mode of the moving body based on information obtained from the control device. The determination unit also determines, based on the operating mode determined by the mode determination unit, whether an alarm needs to be issued to the maintenance personnel.

3. The alarm system according to claim 1 or 2, wherein, The management device also includes a job determination unit, which determines the maintenance work being performed by the maintenance personnel based on information obtained from the control device and location information received by the communication device from the terminal. The determination unit also determines, based on the maintenance operation determined by the operation determination unit, whether an alarm needs to be issued to the maintenance personnel.

4. The alarm system according to claim 1 or 2, wherein, The management device also includes an action command unit. The determination unit, based on the positions detected by the first detection unit and the second detection unit, also considers the positional relationship between the terminal and the moving body on the plane to determine whether the moving body needs to be stopped. When the determination unit determines that the moving body needs to be stopped, the action command unit sends a command to the control device to stop the moving body.

5. The alarm system according to claim 1 or 2, wherein, The management device also includes a display control unit that enables the display to show a three-dimensional image of the interior of the wellbore in a manner that allows for visual confirmation of an area that the determination unit determines requires an alarm to be issued to the maintenance personnel when they enter that area.

6. The alarm system according to claim 1 or 2, wherein, The terminal has: Sensors that detect acceleration; and The notification unit sends an anomaly information to the management device when the sensor detects an acceleration exceeding a threshold. The management device also includes an action command unit, which sends an instruction to the control device to stop the moving body when it receives the abnormality information from the notification unit.

7. The alarm system according to claim 1 or 2, wherein, The terminal sends location information to the communication device at fixed intervals. The management device also includes: The receiving determination unit determines whether the communication device receives location information from the terminal at the fixed period; and The action command unit sends a command to the control device to stop the moving body if the receiving determination unit does not determine that the position information is received at the fixed period.

8. An alarm system comprising: A management device that is connected to the elevator's control device; The terminal held by maintenance personnel; Tags, which are set on moving bodies moving in the shaft; and A communication device that communicates with the management device, receives location information from the terminal, and receives location information from the tag. The management device includes: The first detection unit detects the three-dimensional position of the terminal based on the position information received by the communication device from the terminal. The second detection unit detects the three-dimensional position of the moving body based on the position information received from the tag by the communication device; The determination unit, based on the positions detected by the first detection unit and the positions detected by the second detection unit, and taking into account the positional relationship between the terminal and the moving body on the plane, determines whether an alarm needs to be issued to the maintenance personnel; and The alarm command unit sends an alarm command to the terminal when the determination unit determines that an alarm needs to be issued to the maintenance personnel.

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