Disaster prevention system

Abstract

To provide a disaster prevention system capable of reducing time from fire outbreak until notification in an elevator car.SOLUTION: A fire sensor 10 installed in a car 42 of an elevator 40 transmits fire information to a repeater 20 as the fire sensor detects the fire broke out inside the car 42. The repeater 20 installed outside the car 42 of the elevator 40 transmits the fire information received from the fire sensor 10 to a fire receiver 30.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a disaster prevention system for an elevator. [Background technology]

[0002] Conventionally, a smoke detector is installed at the top of an elevator shaft (for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2013-193867 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, if a fire detector is installed at the top of the elevator shaft, it takes time to detect and report a fire that occurs inside the elevator car. In particular, in the case of high-rise elevators, the top of the elevator shaft is located at a high position, so a fire detector installed at the top of the shaft cannot immediately detect a fire that occurs inside the elevator car. As a result, there is a delay in reporting a fire that occurs inside the elevator car.

[0005] The present invention aims to shorten the time from when a fire occurs inside an elevator car until it is reported. [Means for solving the problem]

[0006] One aspect of the present invention provides a disaster prevention system comprising a repeater installed outside an elevator car and a fire detector installed inside the car, wherein when the fire detector detects a fire inside the car, it transmits fire information to the repeater, and the repeater transmits the fire information received from the fire detector to a fire receiver. Effect of the Invention

[0007] According to the present invention, it is possible to reduce the time from when a fire occurs inside an elevator car until when it is reported. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a diagram showing an example of the configuration of a disaster prevention system. [Diagram 2] FIG. 2 is a diagram showing an example of the configuration of a fire detector. [Diagram 3] FIG. 2 is a diagram showing an example of the configuration of a repeater. [Figure 4] FIG. 2 is a diagram showing an example of the configuration of a fire receiver. [Diagram 5] 4 is a sequence chart showing an example of the operation of the disaster prevention system. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] (composition) 1 is a diagram showing an example of the configuration of a disaster prevention system 1 according to an embodiment. An elevator 40 installed in a building has a car 42 that carries passengers and baggage and moves up and down in a hoistway 43 under the control of an elevator control panel 41 that controls the elevator 40. A fire may break out in the car 42 due to arson or the like. The disaster prevention system 1 quickly detects and reports a fire that breaks out in the car 42.

[0010] The disaster prevention system 1 includes a fire detector 10, a plurality of repeaters 20, and a fire receiver 30. The fire detector 10 is installed in a car 42 of an elevator 40. For example, the fire detector 10 is installed on the ceiling of the car 42 as shown in FIG. 1. The plurality of repeaters 20 are installed outside the car 42 of the elevator 40, respectively, on a plurality of floors where the car 42 stops. For example, each repeater 20 is installed near a destination floor button provided on each floor. The fire receiver 30 is installed in a management room where a manager of the building is located. The fire detector 10 and the repeater 20 are connected wirelessly. Each repeater 20 and the fire receiver 30 are connected by wire or wirelessly.

[0011] 2 is a diagram showing an example of the configuration of the fire detector 10. The fire detector 10 detects a fire that occurs in the car 42 and transmits fire information wirelessly. The fire detector 10 includes a control unit 11, a storage unit 12, a fire detection unit 13, and a wireless communication unit 14. These units are connected via a bus.

[0012] The control unit 11 is composed of, for example, one or more processors such as CPUs, and controls each unit of the fire detector 10. The storage unit 12 is composed of, for example, memories such as RAM, EEPROM, and stores programs for implementing the functions of the fire detector 10 and various data. The fire detection unit 13 is composed of a sensor that detects physical phenomena caused by a fire, and detects a fire that has broken out in the car 42. Examples of objects that the sensor detects include smoke, heat, flame, and CO. A flame sensor is particularly preferable for detecting a fire caused by arson. The fire detection method is not limited to these methods, and other methods may be used.

[0013] The wireless communication unit 14 is configured, for example, by a wireless network adapter, and performs wireless communication with at least one of the multiple repeaters 20 according to a wireless communication standard. Here, the wireless communication standard is assumed to be Bluetooth (registered trademark). The wireless communication standard used by the wireless communication unit 14 is not limited to Bluetooth (registered trademark), and may be another wireless communication standard. The wireless communication unit 14 is paired with the multiple repeaters 20 in advance. The fire detector 10 moves up and down in the elevator 43 as the car 42 moves up and down. During this time, the wireless communication unit 14 is automatically connected to the nearest repeater 20 among the multiple repeaters 20, more specifically, the repeater 20 with the strongest signal strength received by wireless communication. However, depending on the moving speed of the car 42, the wireless communication unit 14 may not be able to connect to a repeater 20 installed on a floor where the car 42 does not stop. For example, when the car 42 ascends from the first basement floor to the eleventh floor without stopping, the wireless communication unit 14 is connected to the repeater 20 installed on the first basement floor, and then connected to the repeater 20 installed on the eleventh floor, without being connected to the repeaters 20 installed on the second to tenth floors. If the connection destination can be switched in a short time, the wireless communication unit 14 may be connected to the multiple repeaters 20 installed on the first to eleventh basement floors in order. Each time the wireless communication unit 14 is connected to a repeater 20, it wirelessly transmits connection information to the connected repeater 20. This connection information is used to detect a connection failure between the fire detector 10 and the repeater 20. When the fire detection unit 13 detects a fire, the wireless communication unit 14 wirelessly transmits fire information to the connected repeater 20 or the repeater 20 that was first connected after the fire detection unit 13 detected a fire.

[0014] 3 is a diagram showing an example of the configuration of the repeater 20. The repeater 20 relays communication between the fire detector 10 and the fire receiver 30. The repeater 20 includes a control unit 21, a storage unit 22, a wireless communication unit 23, and a communication unit 24. These units are connected via a bus.

[0015] The control unit 21 is configured with, for example, one or more processors such as CPUs, and controls each unit of the repeater 20. The storage unit 22 is configured with, for example, memories such as RAM and EEPROM, and stores a program for implementing the functions of the repeater 20 and various data including the address of the repeater 20. The address of the repeater 20 is information that uniquely identifies the repeater 20. The wireless communication unit 23 is configured with, for example, a wireless network adapter, and performs wireless communication with the fire detector 10 according to a wireless communication standard. For example, the wireless communication unit 23 wirelessly receives fire information and connection information from the fire detector 10. The communication unit 24 is configured with, for example, a network adapter, and communicates with the fire receiver 30 according to a communication standard. For example, the communication unit 24 adds the address of the repeater 20 stored in the storage unit 22 to the fire information and connection information received from the fire detector 10 and transmits them to the fire receiver 30.

[0016] 4 is a diagram showing an example of the configuration of the fire receiver 30. When the fire receiver 30 receives fire information transmitted from the fire detector 10, it outputs an alarm notifying the occurrence of a fire. The fire receiver 30 includes a control unit 31, a storage unit 32, a communication unit 33, an operation unit 34, a display unit 35, a sound output unit 36, and a report transfer unit 37. These units are connected via a bus.

[0017] The control unit 31 is configured with, for example, one or more processors such as CPUs, and controls each unit of the fire receiver 30. The storage unit 32 is configured with, for example, memories such as RAM, EEPROM, and stores programs for implementing the functions of the fire receiver 30 and various data. The communication unit 33 is configured with, for example, a network adapter, and communicates with the repeater 20 according to a communication standard. For example, the communication unit 33 receives fire information and connection information from the repeater 20. The operation unit 34 is configured with, for example, operation buttons, and is used to operate the fire receiver 30. The display unit 35 is configured with, for example, an LED or a liquid crystal display, and displays various information. The sound output unit 36 ​​is configured with, for example, a speaker, and outputs various sounds such as voice messages and alarm sounds.

[0018] The report transfer unit 37 is composed of, for example, a report transfer contact, and outputs a report transfer signal to other devices such as emergency broadcast equipment and elevator control panel 41 in response to receiving the fire information (for the local sound equipment, the report transfer signal is output from a bell output terminal or a local sound repeater). This report transfer signal may be a representative signal or a floor-specific signal. If the fire information includes the address of the repeater 20, it means that a fire has occurred in the car 42. In this case, the report transfer unit 37 outputs a report transfer signal indicating that a fire has occurred in the car 42 to other devices. More specifically, the report transfer unit 37 closes a report transfer contact that outputs a report transfer signal indicating that a fire has occurred in the car 42. As a result, a report transfer signal indicating that a fire has occurred in the car 42 is output to other devices. In this way, when a fire occurs in the car 42, a report transfer signal different from that when a fire occurs outside the car 42 is output. As a result, when a fire occurs in the car 42, the other devices can perform different operations from those when a fire occurs outside the car 42.

[0019] Also, the address of the repeater 20 included in the fire information indicates the nearest floor of the car 42 at the time of the fire outbreak. As described above, the fire information is transmitted from the repeater 20 closest to the fire detector 10, so the floor on which the repeater 20 that transmitted the fire information is installed is the nearest floor of the car 42 at the time of the fire outbreak. For example, the memory unit 32 stores a table that associates the addresses of multiple repeaters 20 with the floors on which those repeaters 20 are installed. By referring to this table, the floor on which the repeater 20 that transmitted the fire information is installed can be determined from the address of the repeater 20 included in the fire information. For example, if the address of the repeater 20 on the 10th floor is included in the fire information, this means that the nearest floor of the car 42 at the time of the fire outbreak is the 10th floor. In this case, the report transfer unit 37 may output a report transfer signal indicating that a fire has occurred in the car 42 located near the 10th floor. More specifically, the report transfer unit 37 closes a report transfer contact that outputs a report transfer signal indicating that a fire has occurred in the car 42 located near the 10th floor. As a result, a communication signal indicating that a fire has broken out in car 42 located near the 10th floor is output to other devices. In this way, by outputting a communication signal indicating the nearest floor of car 42 at the time of the fire outbreak, other devices can take action according to the nearest floor of car 42 at the time of the fire outbreak.

[0020] The control unit 31 functions as a connection failure detection unit 311 and a fire origin floor identification unit 312. These functions are realized by the control unit 31 executing a program stored in the storage unit 32, performing calculations, or controlling each unit of the fire receiver 30.

[0021] The connection failure detection unit 311 detects a connection failure between the fire detector 10 and the multiple repeaters 20. For example, when a state where no connection information is received from any of the repeaters 20 continues for a predetermined time, the connection failure detection unit 311 detects a connection failure between the fire detector 10 and the multiple repeaters 20. This predetermined time is set in advance to a time longer than the time required for the car 42 to move between the lowest floor and the highest floor without stopping, for example, one minute or more. When the connection failure detection unit 311 detects a connection failure, an alarm of the connection failure may be output from the display unit 35 and the sound output unit 36.

[0022] The fire origin floor identification unit 312 identifies the fire origin floor. When a fire occurs outside the car 42, the floor where the fire detector 10 that detected the fire is installed is the fire origin floor. On the other hand, when a fire occurs inside the car 42, the elevator control panel 41 directs the car 42 to the evacuation floor, as described below, so that the evacuation floor is preferably the fire origin floor. The evacuation floor is preset, for example, to a floor where a control room is located. When the fire information includes the address of the repeater 20, it means that a fire has occurred inside the car 42 as described above, so the fire origin floor identification unit 312 identifies the preset evacuation floor as the fire origin floor. When the fire origin floor is identified, a transfer signal is output to the emergency broadcast equipment (or local audio equipment) installed on the fire origin floor and the floor immediately above the fire origin floor (in the case of a fire on the first floor, all basement floors). As a result, the emergency broadcast equipment (or local audio equipment) installed on these floors sounds to notify that a fire has occurred.

[0023] (operation) 5 is a sequence chart showing an example of the operation of the disaster prevention system 1. Here, an example will be described in which a fire occurs due to arson in the car 42. In this example, it is assumed that there are no passengers in the car 42 when the fire occurs.

[0024] In step S11, the fire detector 10 detects a fire that has occurred in the car 42 by the fire detection unit 13. As described above, since the fire detector 10 is installed in the car 42, the fire detector 10 can quickly detect a fire that has occurred in the car 42.

[0025] In step S12, the fire detector 10 wirelessly transmits the fire information from the wireless communication unit 14 to the repeater 20 that has the strongest signal strength received by wireless communication among the multiple repeaters 20. For example, if a fire occurs while the car 42 is stopped on the 10th floor, the signal strength received from the repeater 20 installed on the 10th floor is the strongest, so the fire detector 10 is wirelessly connected to the repeater 20 installed on the 10th floor. Therefore, the fire detector 10 transmits the fire information to the repeater 20 installed on the 10th floor. When the fire information is transmitted from the fire detector 10, the repeater 20 installed on the 10th floor receives this fire information via the wireless communication unit 23.

[0026] In step S13, the repeater 20 adds the address of the repeater 20 stored in the memory unit 22 to the fire information received from the fire detector 10 and transmits the information from the communication unit 24 to the fire receiver 30. When the fire information is transmitted from the repeater 20, the fire receiver 30 receives the fire information at the communication unit 33.

[0027] In step S14, the fire origin floor identification unit 312 of the fire receiver 30 identifies the floor where the fire originated based on the fire information received from the repeater 20. For example, if the fire information includes the address of the repeater 20 installed on the 10th floor, it means that a fire has occurred in the car 42. If the evacuation floor is set to the 1st floor in advance, the fire origin floor identification unit 312 may identify the 1st floor as the floor where the fire originated, and the following description will be based on this case.

[0028] In step S15, the fire receiver 30 performs a fire alarm operation according to the fire information received from the repeater 20 and the identified floor where the fire started. For example, the fire receiver 30 outputs an alarm message saying "A fire has started in the car 42, please check the site" from the display unit 35 and the sound output unit 36. This allows the manager to know that a fire has started in the car 42. The fire receiver 30 also transmits a transfer signal from the transfer unit 37 to the emergency broadcast equipment installed on the first floor, identified as the floor where the fire started, and the second floor, which is the floor directly above. This causes the emergency broadcast equipment installed on these floors to sound, notifying the user that a fire has started. Note that the transfer signal may be output to the local audio equipment installed on the floor where the fire started and the floor directly above, causing the local audio equipment installed on these floors to sound.

[0029] In step S16, the fire receiver 30 transmits a report signal indicating that a fire has occurred in the car 42 from the report unit 37 to the elevator control panel 41. As described above, for example, if the fire information includes the address of the repeater 20 installed on the 10th floor, it means that a fire has occurred in the car 42. In this case, the fire receiver 30 may output a report signal indicating that a fire has occurred in the car 42 located near the 10th floor.

[0030] In step S17, when elevator control panel 41 receives the report signal from fire receiver 30, it performs operational control in response to this report signal. For example, elevator control panel 41 sends a control signal to the drive device of car 42 to make car 42 go directly to the first floor, which has been set in advance as an evacuation floor, stop there, and then open the door of car 42. If there is a control room on the evacuation floor, the control room can quickly check the status of car 42 and take appropriate measures, such as extinguishing the fire, depending on the status of car 42.

[0031] According to the above-mentioned embodiment, since the fire occurring in the car 42 is detected by the fire detector 10 installed in the car 42 of the elevator 40, the time from the occurrence of the fire in the car 42 to the notification can be shortened. In addition, since the fire detector 10 is connected to any one of the multiple repeaters 20 installed on the multiple floors where the car 42 stops and transmits the fire information wirelessly, the fire occurring in the car 42 can be quickly notified regardless of the vicinity of any one of the multiple floors where the car 42 is located. Furthermore, when the fire receiver 30 receives the fire information, it outputs a notification signal indicating that a fire has occurred in the car 42 to other devices, so that the occurrence of a fire in the car 42 of the elevator 40 can be notified to other devices. Furthermore, if the notification signal indicates the nearest floor of the car 42 at the time of the fire occurrence, the nearest floor of the car 42 at the time of the fire occurrence can be notified to other devices. Furthermore, when the elevator control panel 41 receives a signal from the fire receiver 30, it directs the car 42 to the evacuation floor and stops it, so if a floor where a control room is located is set as the evacuation floor, the manager can quickly respond to a fire that breaks out inside the car 42. Furthermore, if a fire breaks out inside the car 42, the evacuation floor to which the car 42 goes directly is specified as the floor where the fire started, so it is possible to treat the fire as having broken out on the evacuation floor and issue an appropriate alert.

[0032] (Modification) The present invention is not limited to the above-described embodiment, and may be modified as follows. The following modifications may be used alone or in combination of two or more.

[0033] In the above-mentioned embodiment, when a fire breaks out in the car 42 of the elevator 40, information about the elevator 40 may be displayed on the display of the general operation panel connected to the fire receiver 30. For example, a camera may be installed in the car 42, and when a fire breaks out in the car 42, an image captured by the camera may be transmitted to the general operation panel via the repeater 20 and the fire receiver 30, and displayed on the display of the general operation panel. By viewing this display, the manager can confirm whether there is anyone who was unable to escape from the car 42 when the fire broke out. In addition, floor information indicating the nearest floor of the car 42 when the fire broke out may be transmitted from the fire receiver 30 to the general operation panel, and the nearest floor of the car 42 when the fire broke out may be displayed on the map displayed on the display of the general operation panel based on this floor information, using a display method such as color coding. By viewing this display, the manager can grasp the nearest floor of the car 42 when the fire broke out.

[0034] In the above-described embodiment, a speaker may be provided in the car 42 of the elevator 40 so that, when a fire breaks out inside the car 42, an operator in a remote location can talk to the passengers in the car 42 and guide them to evacuate. According to this modification, when a fire breaks out inside the car 42, appropriate evacuation guidance can be given to the passengers in the car 42.

[0035] In the above embodiment, the fire detector 10 may transmit fire information to a repeater 20 other than the repeater 20 having the strongest signal strength received by wireless communication among the multiple repeaters 20. For example, if the repeater 20 having the strongest signal strength received by wireless communication has a poor connection, the fire detector 10 may transmit fire information to the repeater 20 having the second strongest signal strength received by wireless communication. According to this modification, even if the repeater 20 having the strongest signal strength received by wireless communication has a poor connection, it is possible to notify a fire occurring in the car 42. In another example, the fire detector 10 transmits fire information to the multiple repeaters 20 simultaneously by wireless communication, and a repeater 20 among the multiple repeaters 20 whose signal strength by wireless communication with the fire detector 10 satisfies a predetermined condition may receive the fire information from the fire detector 10 and transmit it to the fire receiver 30. This predetermined condition may be, for example, a condition that the signal strength is equal to or greater than a predetermined value, or a condition that the signal strength is the strongest among the multiple repeaters 20.

[0036] In the above-described embodiment, the fire detector 10 may transmit fire information to the repeater 20 by using RFID (Radio Frequency Identifier) ​​technology. Examples of RFID methods include electrostatic coupling, electromagnetic coupling, electromagnetic induction, radio wave, and optical communication. Even in the configuration according to this modification, fire information can be transmitted from the fire detector 10 installed in the car 42 to the repeater 20.

[0037] In the above embodiment, each repeater 20 may have a confirmation light such as an LED, and when the repeater 20 receives fire information from the fire detector 10, the confirmation light of the repeater 20 may be turned on. According to this modification, when a fire occurs in the car 42 of the elevator 40, a person on the floor nearest to the car 42 can recognize that a fire has occurred in the car 42. In another example, when a fire occurs in the car 42 of the elevator 40, the confirmation lights of all the repeaters 20 may be turned on according to the control of the fire receiver 30 that has received the fire information. Note that the display of the occurrence of a fire in the repeater 20 is not limited to turning on the confirmation light, and may be, for example, a flashing character such as "Fire in elevator". According to this modification, when a fire occurs in the car 42, a person on each floor of the building can recognize that a fire has occurred in the car 42.

[0038] In the above-described embodiment, the fire detector 10 and the elevator control panel 41 may be connected by wire or wirelessly, and the fire detector 10 may transmit fire information to the elevator control panel 41 instead of or in addition to the repeater 20. The elevator control panel 41 does not have to be installed on each floor like the repeater 20. Upon receiving fire information from the fire detector 10, the elevator control panel 41 transmits the fire information to the fire receiver 30. In this modification, the elevator control panel 41 is an example of a repeater according to the present invention. Even in the configuration according to this modification, the fire receiver 30 can obtain fire information transmitted from the fire detector 10 installed in the car 42.

[0039] The above-mentioned disaster prevention system 1 may be applied to an R-type disaster prevention system or a P-type disaster prevention system. However, it is preferable that the P-type disaster prevention system includes an addressed fire detector with an automatic test function.

[0040] In the above-mentioned embodiment, the configurations of the disaster prevention system 1, the fire detector 10, the repeater 20, and the fire receiver 30 are not limited to the above-mentioned examples, and may be configured to include one or more of the above-mentioned devices or parts, or may be configured to exclude some of the devices or parts. Furthermore, the operations of the disaster prevention system 1, the fire detector 10, the repeater 20, and the fire receiver 30 are not limited to the above-mentioned examples, and the order of their operation procedures may be changed or some operation procedures may be omitted, as long as there is no contradiction.

[0041] Another embodiment of the present invention may provide a method having steps of operations performed in at least one of the disaster prevention system 1, the fire detector 10, the repeater 20, and the fire receiver 30. Furthermore, yet another embodiment of the present invention may provide a program executed in the fire detector 10, the repeater 20, or the fire receiver 30. This program may be provided by being stored in a computer-readable recording medium, or may be provided by downloading via the Internet or the like. [Explanation of symbols]

[0042] 1: Disaster prevention system, 10: Fire detector, 11: Control unit, 12: Memory unit, 13: Fire detector, 14: Wireless communication unit, 20: Repeater, 21: Control unit, 22: Memory unit, 23: Wireless communication unit, 24: Communication unit, 30: Fire receiver, 31: Control unit, 32: Memory unit, 33: Communication unit, 34: Operation unit, 35: Display unit, 36: Sound output unit, 37: Reporting unit, 40: Elevator, 41: Elevator control panel, 42: Cage, 43: Hoistway, 311: Connection failure detection unit, 312: Fire origin floor identification unit

Claims

1. A repeater installed outside the elevator car, a fire detector installed in the car, When the fire detector detects a fire occurring in the car, the fire detector transmits fire information to the repeater, The repeater transmits the fire information received from the fire detector to a fire receiver. A disaster prevention system comprising:

2. The repeater includes a plurality of repeaters installed on a plurality of floors where the elevator stops, The fire detector wirelessly communicates with the plurality of repeaters, and when the fire detector detects a fire occurring in the car, wirelessly transmits the fire information to a repeater among the plurality of repeaters that has received the strongest signal by the wireless communication.

2. The disaster prevention system according to claim 1 .

3. The fire receiver is further provided. When the fire receiver receives the fire information, it outputs a signal indicating that a fire has occurred in the car.

2. The disaster prevention system according to claim 1 .

4. The notification signal indicates a floor on which the repeater that transmitted the fire information is installed.

4. The disaster prevention system according to claim 3.

5. The fire receiver transmits the report signal to an elevator control panel that controls the elevator, When the elevator control panel receives the signal, the elevator control panel directs the car to an evacuation floor in case of a fire occurring in the car and stops the car.

4. The disaster prevention system according to claim 3.

6. When the fire receiver receives the fire information, it identifies the evacuation floor as the fire originating floor.

6. The disaster prevention system according to claim 5.

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