Safety system and safety device

Abstract

To provide a safety system and a safety device that are able to cope with an earthquake before the vibration of the earthquake reaches an elevator.SOLUTION: A safety system includes: a sound collector that is provided in an elevator and collects ambient sound; and a control device that controls an operation of the elevator. The control device performs a control operation of the elevator when the sound collected by the sound collector includes an early warning sound of an emergency earthquake early warning sounded from a mobile terminal. The safety device includes: an acquisition unit that acquires a sound collected by the sound collector provided in the elevator; a detection unit that detects that the sound acquired by the acquisition unit includes a warning sound of the emergency earthquake early warning sounded from the mobile terminal; and a command unit that transmits a control command for causing the control device, which controls the operation of the elevator, to perform the control operation of the elevator in a case where it is detected that the sound collected by the sound collector includes the early warning sound.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present disclosure relates to safety systems and devices. [Background technology]

[0002] Patent Document 1 discloses a safety device for an escalator, which can operate the escalator at a constant speed when P waves from an earthquake are detected by an earthquake detector. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Utility Model Application Publication No. 7-28173 Summary of the Invention [Problem to be solved by the invention]

[0004] A service that issues an emergency earthquake alert from a mobile terminal before the shaking of an earthquake that occurred in a remote area reaches the area is becoming widespread. However, with the safety device described in Patent Document 1, safety measures are taken when the shaking of the earthquake has already arrived, so there is a risk that the response will be delayed.

[0005] The present disclosure has been made to solve the above-mentioned problems. An object of the present disclosure is to provide a safety system and a safety device that can respond to an earthquake before the earthquake tremors reach an elevator. [Means for solving the problem]

[0006] The safety system of the present disclosure comprises a sound pickup device installed in an elevator that collects surrounding sounds, and a control device that controls the operation of the elevator, and when the sounds collected by the sound pickup device include the sound of an emergency earthquake warning sounded from a mobile terminal, the control device controls the operation of the elevator.

[0007] The safety device according to the present disclosure includes an acquisition unit that acquires sounds collected by a sound collector provided in the elevator, a detection unit that detects whether the sounds acquired by the acquisition unit include an early warning sound of an emergency earthquake warning sounded from a mobile terminal, and a command unit that, when it is detected that the sounds collected by the sound collector include the early warning sound, transmits a control command to a control device that controls the operation of the elevator to control the operation of the elevator. Effect of the Invention

[0008] According to the present disclosure, when the sounds collected by the sound collector include the sound of an emergency earthquake alert sounded from a mobile device, the elevator performs controlled operation, so that the elevator can respond to an earthquake before the earthquake tremors reach the elevator. [Brief description of the drawings]

[0009] [Figure 1] 1 is a configuration diagram of an elevator to which a safety system according to a first embodiment is applied. [Diagram 2] 1 is a functional block diagram of a safety system according to a first embodiment. [Diagram 3] 4 is a flowchart showing an example of the operation of the safety system in the first embodiment. [Figure 4] FIG. 2 is a schematic diagram of a building to which a modification of the safety system in the first embodiment is applied. [Diagram 5] FIG. 4 is a functional block diagram of a modified example of the safety system in the first embodiment. [Figure 6] FIG. 11 is a configuration diagram of an elevator and a building to which a safety system according to a second embodiment is applied. [Figure 7] FIG. 11 is a functional block diagram of a safety system according to a second embodiment. [Figure 8] 10 is a flowchart showing an example of the operation of the safety system in the second embodiment. [Figure 9] FIG. 2 is a hardware configuration diagram of a safety device of the safety system according to the first or second embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] The embodiments for carrying out the present disclosure will be described with reference to the accompanying drawings. In each drawing, the same or corresponding parts are denoted by the same reference numerals. The duplicated description of the parts will be appropriately simplified or omitted.

[0011] Embodiment 1 FIG. 1 is a configuration diagram of an elevator to which a safety system according to a first embodiment is applied.

[0012] The safety system 1 is applied to an elevator. As shown in FIG. 1, in the first embodiment, the elevator is an escalator 101. The escalator 101 is suspended between an upper floor and a lower floor of a building (not shown). The escalator 101 transports passengers between the upper floor and the lower floor. The escalator 101 includes a first entrance 102a, a second entrance 102b, a main frame 103, a plurality of steps 104, a step sprocket 105, a step chain 106, a deck 107, a driving machine 108, a brake device 109, and a control device 110.

[0013] The first entrance / exit 102a is provided on an upper floor of the building. The second entrance / exit 102b is provided on a lower floor of the building. Passengers use the escalator 101 by passing through the first entrance / exit 102a and the second entrance / exit 102b. The main frame 103 is suspended between the first entrance / exit 102a and the second entrance / exit 102b. The main frame 103 has a machine room 103a at its upper end. The machine room 103a is provided below the first entrance / exit 102a. The entirety of the multiple steps 104 are connected in an endless manner. The multiple steps 104 are disposed between the first entrance / exit 102a and the second entrance / exit 102b. The step sprocket 105 is provided in the machine room 103a. The step chain 106 is an endless chain. The step chain 106 connects the multiple steps 104. A portion of the step chain 106 is wound around the step sprocket 105. The decks 107 are provided on both sides of the steps 104 that pass above. The decks 107 are provided from the first boarding / alighting opening 102a to the second boarding / alighting opening 102b. The decks 107 cover the upper part of the main frame 103 to prevent objects from falling from the steps 104.

[0014] The driving machine 108 rotates the driving shaft and drives the step sprocket 105 via the reduction gear, thereby moving the multiple steps 104. The braking device 109 is a device that brakes the multiple steps 104 via the driving machine 108, the reduction gear, the step sprocket 105, and the step chain 106. For example, the braking device 109 is a disk brake that is provided coaxially with the driving shaft of the driving machine 108. The control device 110 controls the driving machine 108 and the braking device 109, thereby controlling the overall operation of the escalator 101.

[0015] When the escalator 101 operates in the UP direction, the driving machine 108 generates a rotational driving force in the UP direction. In this case, the step 104 moves from the second entrance 102b to the first entrance 102a. Passengers get on the step 104 from the second entrance 102b, move upward, and get off at the first entrance 102a. That is, when the escalator 101 operates in the UP direction, the second entrance 102b is the entrance and the first entrance 102a is the exit. When the escalator 101 operates in the DOWN direction, the moving direction of the step 104, the relationship between the entrance and the exit, etc. are reversed. When the brake device 109 starts a braking operation, it brakes the driving machine 108, the step sprocket 105, and the step 104 so that the moving step 104 stops at a specified acceleration.

[0016] The safety system 1 includes a sound pickup device 2, an alarm device 3, an earthquake detector 4, and a safety device 5. The safety system 1 further includes each device of the elevator, that is, an escalator 101. Note that the elevator may include the sound pickup device 2, the alarm device 3, the earthquake detector 4, and the safety device 5.

[0017] The sound collector 2 is a microphone that collects surrounding sounds. The sound collector 2 is installed in a place where it can collect sounds around the escalator 101. For example, the sound collector 2 is provided on the deck 107. In particular, with respect to the longitudinal direction of the deck 107 from the first entrance 102a to the second entrance 102b, the sound collector 2 may be provided in a portion closer to the entrance of the escalator 101 than the central portion of the longitudinal direction of the deck 107. Specifically, the sound collector 2 may be provided in a portion of the deck 107 that is included in the entrance. Although not shown, the sound collector 2 may be provided in the same housing as a human sensor provided at the entrance. Although not shown, a plurality of sound collectors 2 may be provided at a plurality of locations on one escalator 101.

[0018] The alarm 3 is a device that notifies information at least by sound. For example, the alarm 3 includes a speaker that emits sound. The alarm 3 is provided in at least one location on the deck 107. In particular, the alarm 3 may be provided in a portion closer to the entrance of the escalator 101 than the central portion in the longitudinal direction of the deck 107. For example, as shown in FIG. 1, the alarm 3 may be provided in a portion of the deck 107 that is included in the entrance.

[0019] Although not shown, the alarm 3 may include a display that visually displays information. Also, although not shown, the alarm 3 may be provided in the same housing as a human presence sensor provided at the entrance.

[0020] The earthquake detector 4 is provided on the main frame 103. The earthquake detector 4 may be provided anywhere in the building in which the escalator 101 is provided. The earthquake detector 4 detects vibrations caused by earthquakes and the like. The earthquake detector 4 transmits a detection signal when the vibrations exceed a specified threshold value.

[0021] The earthquake detector 4 includes at least one of a P-wave detector and an S-wave detector. The P-wave detector detects P-waves caused by an earthquake. The P-wave detector emits a P-wave detection signal when the shaking exceeds a P-wave threshold. The S-wave detector detects S-waves caused by an earthquake. The S-wave detector emits an S-wave detection signal when the shaking exceeds an S-wave threshold. Note that the earthquake detector 4 may only have the function of measuring shaking instead of the function of detecting shaking, and may emit a measurement signal indicating the type and magnitude of the measured shaking.

[0022] For example, the safety device 5 is provided in the machine room 103a. The safety device 5 may be provided inside the control device 110, particularly on the same board as the control circuit of the control device 110.

[0023] For example, in Japan, services that sound an emergency earthquake alert from a mobile device such as a smartphone are widespread. Specifically, when a large earthquake that exceeds a certain standard occurs in a remote area far from a certain region, an emergency earthquake alert sound indicating that an earthquake is predicted to occur is sounded from a mobile device before the earthquake tremors reach the region. This sound alert encourages people to take action such as evacuating from dangerous places in advance.

[0024] When an emergency earthquake early warning sound is issued from a mobile terminal carried by a user of the escalator 101 or a person walking around the escalator 101, the sound collector 2 collects the early warning sound. When the safety device 5 detects that the sounds collected by the sound collector 2 include an early warning sound, it transmits a control command to the control device 110. The control device 110 performs controlled operation of the escalator 101 based on the control command. Specifically, during controlled operation, the brake device 109 performs a braking operation so that the step 104 stops at a specified acceleration, and then maintains a braking force so that the step 104 does not move.

[0025] If the earthquake detector 4 does not detect shaking exceeding a specified threshold after transmitting the control command, the safety device 5 transmits a return command to the control device 110 to return to controlled operation. The control device 110 ends the controlled operation and returns to normal operation.

[0026] Next, the safety device 5 will be described with reference to FIG. FIG. 2 is a functional block diagram of the safety system according to the first embodiment.

[0027] As shown in FIG. 2, the safety device 5 includes an acquisition unit 10, a detection unit 11, a command unit 12, a notification unit 13, an earthquake detection unit 14, and a recovery unit 15 as functions.

[0028] The acquisition unit 10 acquires, from the sound collector 2, information on the sound collected by the sound collector 2. Note that the acquisition unit 10 may convert a signal indicating the sound acquired by the sound collector 2 into sound information.

[0029] The detection unit 11 analyzes the sound information acquired by the acquisition unit 10 and detects that the sound information includes an early warning sound of an emergency earthquake warning. That is, the detection unit 11 detects that the sound collected by the sound collector 2 includes an early warning sound.

[0030] When the detection unit 11 detects that the sound collected by the sound collector 2 includes an early warning sound, the command unit 12 transmits a control command to the control device 110. Note that the command unit 12 may transmit a command including specific details of the control operation as the control command.

[0031] When the detection unit 11 detects that the sound collected by the sound collector 2 includes an early warning sound, the notification unit 13 causes the alarm 3 to notify warning information. The warning information includes a message that an earthquake is predicted, and a message urging a person to get off the escalator 101 or hold on tightly to the handrail.

[0032] The earthquake detection unit 14 determines whether the earthquake detector 4 has detected shaking exceeding a specified threshold based on a signal from the earthquake detector 4. Specifically, the earthquake detection unit 14 determines that shaking has been detected when a detection signal is received from the earthquake detector 4. Note that in the case where the earthquake detector 4 has only a function of measuring shaking instead of a function of detecting shaking and transmits a measurement signal indicating the type and magnitude of the measured shaking, the earthquake detection unit 14 may have a function of detecting shaking based on the measurement signal. In this case, the earthquake detection unit 14 may determine whether the earthquake detector 4 has detected shaking exceeding a threshold based on the detected shaking.

[0033] If a specified recovery time has elapsed without the earthquake detector 4 detecting any shaking exceeding the threshold after the control command was transmitted, the recovery unit 15 transmits a recovery command to the control device 110. The recovery time may be set to any time, such as 5 minutes.

[0034] Next, the operation of the safety system 1 will be described with reference to FIG. FIG. 3 is a flowchart showing an example of the operation of the safety system in the first embodiment.

[0035] 3 starts when the power of the escalator 101 is turned on. In step S01, the detection unit 11 determines whether or not the early warning sound of an emergency earthquake warning is included in the sound information collected by the sound collector 2. If the early warning sound is not included in step S01, the operation of step S01 is repeated.

[0036] In step S01, if the sound information includes an early warning sound, the operation of step S02 is performed. In step S02, the command unit 12 transmits a control command to the control device 110. The control device 110 starts a control operation. That is, if it is detected that the sound collected by the sound collector 2 includes an early warning sound, the control device 110 performs a control operation.

[0037] After that, in step S03, the alarm unit 13 causes the alarm device 3 to notify the alert information. That is, when it is detected that the sound collected by the sound collector 2 includes an alert sound, the alarm device 3 notifies the alert information.

[0038] Then, in step S04, the earthquake detection unit 14 determines whether the earthquake detector 4 has detected a tremor exceeding a specified threshold value. The tremor detected in step S04 may be a P wave of an earthquake or an S wave of an earthquake.

[0039] If it is determined in step S04 that the earthquake detector 4 has detected shaking exceeding a prescribed threshold, the operation of the flowchart ends. That is, the escalator 101 continues to operate in a controlled manner. For example, a maintenance worker from the maintenance company of the escalator 101 manually returns the escalator 101 from this controlled operation to normal operation.

[0040] If it is determined in step S04 that the earthquake detector 4 has not detected shaking exceeding a prescribed threshold, the operation of step S05 is performed. In step S05, the recovery unit 15 determines whether or not the time that has elapsed since the control command was transmitted has exceeded the recovery time. If it is determined in step S05 that the time that has elapsed since the control command was transmitted has not exceeded the recovery time, the operations from step S04 onwards are repeated.

[0041] In step S05, if the time that has elapsed since the control command was transmitted exceeds the return time, the operation of step S06 is performed. In step S06, the return unit 15 transmits a return command to the control device 110. The control device 110 ends the controlled operation and returns to normal operation. That is, if the specified return time has elapsed without detecting shaking exceeding the threshold value after the control command was transmitted, the control device 110 returns from the controlled operation to normal operation. Then, the operation of the flowchart ends.

[0042] According to the above-described first embodiment, the safety system 1 includes a sound collector 2 and a control device 110. In the safety system 1, when the sounds collected by the sound collector 2 include an early warning sound sounded from a mobile terminal, the control device 110 controls the operation of the elevator. Normally, an earthquake early warning is sounded before the earthquake tremors reach a location some distance away from the epicenter. This makes it possible to respond to an earthquake before the earthquake tremors reach the elevator.

[0043] Furthermore, such an operation of the safety system 1 can be realized by a safety device 5. The safety device 5 has an acquisition unit 10, a detection unit 11, and a command unit 12 as functions. When the sounds collected by the sound collector 2 include an early warning sound sounded from a mobile terminal, the command unit 12 transmits a control command to the control device 110 to perform controlled operation. This makes it possible to respond to an earthquake before the earthquake tremors reach the elevator. Note that each function of the safety device 5 may be provided in the control device 110.

[0044] The safety system 1 further includes an earthquake detector 4. The elevator returns to normal operation if the earthquake detector 4 does not detect any shaking exceeding a specified threshold value from the start of controlled operation until the return time has elapsed. Therefore, if there are no problems such as earthquakes, the elevator can return to normal operation without workers having to go to the site.

[0045] Furthermore, earthquake detector 4 includes a P-wave detector. Escalator 101, which is an elevator, returns to normal operation if the P-wave detector does not detect shaking exceeding a specified P-wave threshold value from the start of controlled operation until the return time has elapsed. Therefore, compared to the invention described in Patent Document 1, which is a prior art document, escalator 101 can quickly return to normal operation after switching to controlled operation earlier.

[0046] Moreover, the elevator is an escalator 101. The sound collector 2 is provided on the escalator. This allows for earthquake safety measures to be taken on the escalator 101. Furthermore, the sound collector 2 can collect early warning sounds from mobile terminals carried by a wide range of people, such as people riding the escalator 101 and people around the escalator 101.

[0047] Moreover, the sound pickup device 2 is provided at a position on the deck 107 of the escalator 101 closer to the entrance than the center in the longitudinal direction. When an emergency earthquake alert sounds, passengers who are traveling on the steps 104 and are close to the exit of the escalator 101 can evacuate from the exit quickly. On the other hand, passengers who are close to the entrance are difficult to evacuate immediately unless controlled operation is performed. That is, the technology of the present disclosure is particularly useful when passengers are moving near the entrance. By installing only one sound pickup device 2 at that position, it is possible to prevent multiple sound pickup devices from being installed. As a result, the safety system 1 can be realized at low cost.

[0048] Furthermore, as a controlled operation, the control device 110 activates the brakes of the escalator 101. Therefore, when an emergency earthquake warning is sounded, people standing on the steps 104 can easily evacuate from the entrance.

[0049] The safety system 1 further includes an alarm 3. The alarm 3 alerts passengers by sound, thereby efficiently encouraging them to take action against an earthquake.

[0050] The safety system 1 in the first embodiment is also applicable to a case where a plurality of escalators 101 are provided in one building. Fig. 4 is a schematic diagram of a building to which a modified example of the safety system in accordance with the first embodiment is applied. Fig. 5 is a functional block diagram of the modified example of the safety system in accordance with the first embodiment.

[0051] 4 and 5, a building is provided with a plurality of linked escalators 120. The plurality of linked escalators 120 includes the escalator 101 in the first embodiment. The configuration of each of the plurality of linked escalators 120 is similar to the configuration of each of the escalators 101.

[0052] A plurality of linked sound collectors 122 including sound collector 2 and a plurality of linked alarms 123 including alarm 3 are provided on each of the multiple linked escalators 120. Each of the multiple linked sound collectors 122 has the same configuration as the sound collector 2. Each of the multiple linked alarms 123 has the same configuration as the alarm 3. The earthquake detector 4 may be provided on the main frame 103 of the linked escalator 120 provided on the lowest floor among the multiple linked escalators 120. The safety device 5 may be provided in the machine room of the linked escalator 120 provided on the lowest floor among the multiple linked escalators 120. The safety device 5 acquires sound information collected by each of the multiple linked sound collectors 122.

[0053] In this modification, the respective control devices 110 of the multiple linked escalators 120 are also referred to as multiple linked control devices. When the command unit 12 of the safety device 5 determines that the sound information collected by any of the multiple linked sound collectors 122 includes an alert sound, it transmits a control command to the multiple linked control devices. In this case, each of the multiple linked escalators 120 performs controlled operation. In addition, the alarm unit 13 of the safety device 5 causes the multiple linked alarms 123 to alarm warning information.

[0054] In this modification, if a specified return time has elapsed without the earthquake detector 4 detecting shaking exceeding a threshold after transmitting the control command, the return unit 15 of the safety device 5 transmits a return command to each of the control devices 110 of the multiple linked escalators 120. In this case, each of the multiple linked escalators 120 returns to normal operation from controlled operation. Thus, in this modification, the same operation as in the first embodiment is performed in each of the multiple linked escalators 120.

[0055] According to the above-described modified example of the first embodiment, the safety device 5 transmits a control command to each of the multiple linked control devices corresponding to the multiple linked escalators 120. When the shaking of an earthquake reaches a certain area, it is desirable that all of the multiple escalators installed in the same building perform controlled operation. In the safety system 1, if the sound collected by the sound collector 2 at one location includes an early warning sound, the multiple linked escalators 120 that are linked start controlled operation. Therefore, a safer environment can be provided for users of all the linked escalators 120. Note that the multiple linked escalators 120 do not have to be installed in the same building, and may be installed in, for example, an entire commercial facility, one area, or the like.

[0056] Embodiment 2 Fig. 6 is a configuration diagram of an elevator and a building to which a safety system in accordance with the second embodiment is applied. Fig. 7 is a functional block diagram of the safety system in accordance with the second embodiment. Note that parts that are the same as or equivalent to those in accordance with the first embodiment are given the same reference numerals. Explanation of these parts will be omitted.

[0057] As shown in FIG. 6, in the second embodiment, the elevator is an elevator 201. The elevator 201 includes a cage 202. The cage 202 is suspended by a rope 204 inside a hoistway 203. An intermediate portion of the rope 204 is wound around a hoist 205. The cage 202 ascends and descends inside the hoistway 203 as the hoist 205 rotates. The cage 202 is provided with a cage door 206, a sound pickup device 2, and an alarm device 3. The cage door 206 opens and closes at the landing of the elevator 201. For example, the sound pickup device 2 may be used as a microphone for communicating with an information center (not shown) in an emergency. The alarm device 3 may be used as a speaker for reproducing an alarm sound that is made during normal operation, such as when the elevator arrives at a landing. The alarm device 3 may also include a display that displays information such as the floor on which the cage 202 is located. The control device 207 is capable of overall control of the operation of the elevator 201 .

[0058] The earthquake detector 4 is provided in a pit 208 which is the lowest part of the elevator shaft 203. The safety device 5 is provided near the control device 207. The safety device 5 may be provided inside the control device 207, particularly on the same board as the control circuit of the control device 207.

[0059] In the second embodiment, the sound collector 2 collects sounds inside the car 202. That is, the sound collector 2 can collect the sound of an emergency earthquake warning sounded inside the car 202. For example, when a controlled operation is started in the elevator 201, the car 202 makes car calls to all floors and stops at the nearest floor. The car door 206 remains open at the nearest floor. The alarm 3 issues a notice urging passengers to get off the car 202.

[0060] As shown in FIG. 7, in the second embodiment, the safety device 5 has the same function as in the first embodiment.

[0061] Next, the operation of the safety system 1 will be described with reference to FIG. FIG. 8 is a flowchart showing an example of the operation of the safety system in the second embodiment.

[0062] 8 starts when the elevator 201 is powered on. In step S11, the detection unit 11 determines whether or not the early warning sound of an emergency earthquake warning is included in the sound information collected by the sound collector 2. If the early warning sound is not included in step S11, the operation of step S11 is repeated.

[0063] In step S11, if the sound information includes an early warning sound, the operation of step S12 is performed. In step S12, the command unit 12 transmits a control command to the control device 207. The control device 207 starts a controlled operation. That is, if it is detected that the sound collected by the sound collector 2 includes an early warning sound, the control device 207 performs a controlled operation.

[0064] After that, in step S13, the alarm unit 13 causes the alarm device 3 to notify the alert information. That is, when it is detected that the sound collected by the sound collector 2 includes an early warning sound, the alarm device 3 notifies the alert information. At this time, the speaker of the alarm device 3 emits a sound indicating the alert information. The display of the alarm device 3 displays the alert information. The operation of step S13 may be included in the operation of the controlled operation performed by the control device 207.

[0065] Then, in step S14, the earthquake detection unit 14 determines whether the earthquake detector 4 has detected a tremor exceeding a specified threshold. The tremor detected in step S14 may be a P wave of an earthquake or an S wave of an earthquake.

[0066] If it is determined in step S14 that the earthquake detector 4 has detected shaking exceeding a specified threshold, the operation of the flowchart ends. That is, the elevator 201 continues to operate in a controlled manner. Thereafter, a maintenance worker of the maintenance company of the elevator 201 may manually return the elevator 201 from the controlled operation to normal operation, or a device of the company that maintains the elevator 201 may remotely return the elevator 201 from the controlled operation to normal operation.

[0067] If it is determined in step S14 that the earthquake detector 4 has not detected shaking exceeding a prescribed threshold, the operation of step S15 is performed. In step S15, the recovery unit 15 determines whether or not the time that has elapsed since the control command was transmitted has exceeded the recovery time. If it is determined in step S15 that the time that has elapsed since the control command was transmitted has not exceeded the recovery time, the operations from step S14 onwards are repeated.

[0068] If the time that has elapsed since the control command was transmitted exceeds the return time in step S15, the operation of step S16 is performed. In step S16, the return unit 15 transmits a return command to the control device 207. The control device 207 ends the controlled operation and returns to normal operation. That is, if the specified return time has elapsed without the earthquake detector 4 detecting any shaking after the control command was transmitted, the control device 207 returns to normal operation from the controlled operation. Then, the operation of the flowchart ends.

[0069] According to the above-described second embodiment, the elevator is the elevator 201. In the elevator 201, the same operation as the controlled operation in the first embodiment is realized. Therefore, it is possible to respond to an earthquake before the earthquake vibrations reach the elevator 201. Note that each function of the safety device 5 may be provided in the control device 207.

[0070] Next, an example of hardware constituting the safety device 5 will be described with reference to FIG. FIG. 9 is a hardware configuration diagram of the safety device of the safety system according to the first or second embodiment.

[0071] Each function of the safety device 5 may be realized by a processing circuit. For example, the processing circuit includes at least one processor 5a and at least one memory 5b. For example, the processing circuit includes at least one dedicated hardware 5c.

[0072] When the processing circuit includes at least one processor 5a and at least one memory 5b, each function of the safety device 5 is realized by software, firmware, or a combination of software and firmware. At least one of the software and firmware is written as a program. At least one of the software and firmware is stored in at least one memory 5b. At least one processor 5a realizes each function of the safety device 5 by reading and executing the program stored in the at least one memory 5b.

[0073] When the processing circuit includes at least one dedicated hardware 5c, the processing circuit is realized, for example, by a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an ASIC, an FPGA, or a combination thereof. For example, each function of the safety device 5 is realized by a processing circuit. For example, each function of the safety device 5 is realized collectively by a processing circuit.

[0074] Some of the functions of the safety device 5 may be realized by dedicated hardware 5c, and the remaining parts may be realized by software or firmware. For example, the function of the command unit 12 may be realized by a processing circuit as the dedicated hardware 5c, and functions other than the function of the command unit 12 may be realized by at least one processor 5a reading and executing a program stored in at least one memory 5b.

[0075] In this manner, the processing circuitry realizes each function of the safety device 5 by means of hardware 5c, software, firmware, or a combination of these.

[0076] Although not shown, each function of the control device 110 and the control device 207 is also realized by a processing circuit equivalent to the processing circuit that realizes each function of the safety device 5.

[0077] To summarize the above explanation, possible configurations of the technology according to the present disclosure include the configurations listed below as appendices. (Appendix 1) A sound collector installed in the elevator for collecting surrounding sounds; A control device for controlling the operation of the elevator; Equipped with A safety system in which, when the sounds collected by the sound pickup device include the sound of an emergency earthquake alert sounded from a mobile terminal, the control device controls the operation of the elevator. (Appendix 2) an earthquake detector provided in the elevator and configured to detect shaking; Further comprising: A safety system as described in Appendix 1, in which the elevator returns from the controlled operation to normal operation if the earthquake detector does not detect shaking exceeding a specified threshold within a specified return time after the elevator starts controlled operation. (Appendix 3) The earthquake detector includes a P-wave detector that detects P-wave vibrations caused by an earthquake, A safety system as described in Appendix 2, in which the elevator returns from the controlled operation to normal operation if the P-wave detector does not detect any shaking exceeding a specified P-wave threshold between the time the elevator starts controlled operation and the time the return time has elapsed. (Appendix 4) The elevator is an escalator, The safety system according to any one of claims 1 to 3, wherein the sound pickup device is provided on the escalator. (Appendix 5) 5. The safety system of claim 4, wherein the sound pickup is provided on the deck of the escalator at a position closer to the entrance than to the center of the deck. (Appendix 6) The safety system according to claim 4 or 5, wherein the control device activates the brakes of the escalator as the controlled operation. (Appendix 7) an alarm provided on the escalator and emitting a sound; Further comprising: A safety system as described in any one of appendix 4 to appendix 6, wherein when it is detected that the sound collected by the sound pickup device includes the breaking news sound, a sound alerting the user is issued from the alarm. (Appendix 8) The elevator is an elevator, The safety system according to any one of claims 1 to 3, wherein the sound pickup device is provided inside the elevator car. (Appendix 9) an acquisition unit that acquires sounds collected by a sound collector provided in the elevator; A detection unit that detects whether the sound acquired by the acquisition unit includes an emergency earthquake warning sound issued from a mobile terminal; a command unit that transmits a control command to a control device that controls the operation of the elevator when it is detected that the sound collected by the sound collector includes the alert sound, and Equipped with a safety device. (Appendix 10) A safety device as described in Appendix 9, wherein the command unit transmits the control command to each of a plurality of coordinated control devices corresponding to a plurality of coordinated escalators when it is detected that the sound acquired by the acquisition unit includes the early warning sound. [Explanation of symbols]

[0078] 1 safety system, 2 sound pickup, 3 alarm, 4 earthquake detector, 5 safety device, 5a processor, 5b memory, 5c hardware, 10 acquisition unit, 11 detection unit, 12 command unit, 13 alarm unit, 14 earthquake detection unit, 15 return unit, 101 escalator, 102a first entrance, 102b second entrance, 103 main frame, 103a machine room, 104 step, 105 step sprocket, 106 step chain, 107 deck, 108 drive unit, 109 brake device, 110 control device, 120 linked escalator, 122 linked sound pickup, 123 linked alarm, 201 elevator, 202 cage, 203 Hoistway, 204 rope, 205 hoist, 206 car door, 207 control device, 208 pit

Claims

1. A sound collector is provided in the elevator to collect surrounding sounds; A control device for controlling the operation of the elevator; Equipped with A safety system in which, when the sounds collected by the sound pickup device include the sound of an emergency earthquake alert sounded from a mobile terminal, the control device controls the operation of the elevator.

2. an earthquake detector provided in the elevator and configured to detect shaking; Further comprising: A safety system as described in claim 1, wherein the elevator returns from the controlled operation to normal operation if the earthquake detector does not detect any shaking exceeding a specified threshold within a specified return time after the elevator starts the controlled operation.

3. The earthquake detector includes a P-wave detector that detects P-wave vibrations caused by an earthquake, A safety system as described in claim 2, wherein the elevator returns from the controlled operation to normal operation if the P-wave detector does not detect any shaking exceeding a specified P-wave threshold between the time the elevator starts controlled operation and the time the return time has elapsed.

4. The elevator is an escalator, The safety system according to claim 1 , wherein the sound pickup device is provided on the escalator.

5. The safety system according to claim 4 , wherein the sound pickup device is provided on the deck of the escalator at a position closer to an entrance than to a center of the deck.

6. The safety system according to claim 4 , wherein the control device activates a brake for the escalator as the controlled operation.

7. an alarm provided on the escalator and emitting a sound; Further comprising: The safety system according to claim 4 , wherein when it is detected that the sound collected by the sound collector includes the alert sound, the alarm issues a sound to call attention.

8. The elevator is an elevator, The safety system according to claim 1 , wherein the sound pickup device is provided inside the elevator car.

9. an acquisition unit that acquires sounds collected by a sound collector provided in the elevator; A detection unit that detects whether the sound acquired by the acquisition unit includes an emergency earthquake warning sound issued from a mobile terminal; a command unit that transmits a control command to a control device that controls the operation of the elevator when it is detected that the sound collected by the sound collector includes the alert sound, and Equipped with a safety device.

10. The safety device according to claim 9, wherein the command unit transmits the control command to each of a plurality of coordinated control devices corresponding to a plurality of coordinated escalators when it is detected that the sound acquired by the acquisition unit includes the early warning sound.

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