JP2012184041A - Elevator system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an elevator system that can perform rescue operation of an elevator after understanding the circumstances of a fire site.SOLUTION: Fire detection devices 20 installed on a plurality of parts in a building 11 have cameras 21, the presence or the absence of a person in an elevator hall 15 upon the occurrence of fire, and the presence or the absence of smoke or flame on each floor are detected on the basis of fire detection signals from the fire detection devices 20 and image signals photographed by the cameras 21 and, on the basis of the detection results, a rescue operation means 25 determines the rescue floor and performs rescue drive of an elevator car 13.

Description

  Embodiments described herein relate generally to an elevator system that enables rescue operation by an elevator when a fire occurs.

  Generally, when a fire occurs in a building, it is necessary to evacuate personnel from the building as soon as possible. As a means for effectively evacuating from the building, it is considered to use an elevator provided in the building. As a proposal for an evacuation relationship using an elevator, when a fire breaks out, the elevator group that services the zone that contains the fire floor is given top priority to fire control operation, and then the elevator that is adjacent to the zone to which the fire floor belongs. There has been disclosed a fire control operation that gives priority to an elevator group that serves a floor zone (see, for example, Patent Document 1). Moreover, when a fire occurs, a car is guided to a floor other than the floor where the fire occurred to evacuate passengers in the car (for example, see Patent Document 2).

Japanese Patent Laid-Open No. 5-8954 Japanese Patent Laid-Open No. 10-182029

  By the way, the building is divided into fire prevention areas for each predetermined floor area, and the fire does not spread from each fire prevention area to other fire prevention areas. In addition, while fires may increase damage, sprinkler fire extinguishing devices are often activated and are not important.

  In this way, since building fires are diverse, it is not suitable for the actual situation of building fires to set the elevator service at the time of a fire uniformly. Usually, a detection means such as a fire alarm can detect the fact that a fire has occurred, but it cannot clearly grasp the situation of the fire site. For this reason, it was difficult to carry out appropriate and safe rescue by simply setting the elevator service in the event of a fire.

  The problem to be solved by the present invention is to provide an elevator system capable of rescue operation of an elevator after grasping the situation of a fire site.

  An elevator system according to an embodiment of the present invention has a camera, fire detection devices installed at a plurality of locations in a building, fire detection signals from these fire detection devices, and video signals captured by the camera. In the event of a fire, the presence of people in the elevator hall in the building and the presence or absence of smoke or flame on each floor are detected, the rescue floor is determined based on the detection results, and the elevator car is rescued And a rescue driving means.

  According to the said structure, since the condition of the field can be grasped | ascertained by the video signal image | photographed with the camera provided in the fire detection apparatus, the elevator can be rescue-operated appropriately and safely.

It is a figure showing the whole elevator system composition concerning one embodiment of the present invention. It is a functional block diagram which shows the principal part structure in one embodiment of this invention. It is a time chart which shows the relationship with the fire condition elevator rescue operation possible range in one embodiment of the present invention. It is a flowchart explaining the whole operation | movement in one embodiment of this invention. It is a flowchart explaining the modification of the whole operation | movement in one embodiment of this invention.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

  FIG. 1 shows the overall configuration of the elevator system according to this embodiment. In FIG. 1, a hoistway 12 is provided in a building 11, and an elevator car (hereinafter simply referred to as a car) 13 is provided in the hoistway 12 so as to be able to be raised and lowered. Although not shown in the figure, the car 13 is connected to the hoistway 12 in the shape of a fishing bottle by a counterweight and a rope. By the rotation of the hoisting machine around which the rope is wound, the car 13 is mutually connected along the guide rail. It is driven up and down.

  In this embodiment, the building 11 has 7 floors, and the elevator halls 15 of the floors 1F to 7F are separated from other living sections (offices, rooms, etc. including a passage portion) 17 by fire doors 16. The fire door 16 is open during normal times and automatically closes when a fire occurs. Although not shown in the drawings, the elevator hall 15 on each floor is provided with a hall call registration device, and the car 12 has a car call registration device for designating a destination floor by the operation of the passenger. Yes.

  The operation control device 19 is connected to the above-described hall call registration device and car call registration device on each floor (not shown), and moves the car 13 to the destination floor in response to calls from these.

  On each floor 1F to 7F of the building 11, a fire detection device 20 is installed in each of the elevator hall 15 and other living sections 17. The fire detection device 20 is a general device that detects a fire by sensing smoke or heat, but has a camera 21 that can image the surroundings as shown in FIG. Each of these fire detection devices 20 is connected to the operation control device 19, and the fire detection signal and the video signal captured by the camera 21 are input to the operation control device 19.

  As illustrated in FIG. 2, the operation control device 19 includes a video processing unit 23, a fire situation determination unit 24, a rescue operation unit 25, and an elevator control unit 26.

  The video processing unit 23 is connected to each fire detection device 20, and a fire detection signal and a video signal captured by the camera 21 are input from these. Then, by processing the video signal, the presence or absence of a person (refugee) is detected by the refugee detection means 31. The smoke / flame detection means 32 detects the presence or absence of smoke or flame. Further, the fire door closing detection means 33 detects whether the fire door 16 is closed.

  Here, although the fire detection device 20 is provided in each of the elevator hall 15 and the living section 17, for example, a unique ID is set in each fire detection device 20, and the fire detection input to the operation control device 19. By adding this ID to the signal and the video signal, the operation control device 19 can identify which fire detection device 20 and camera 21 are the fire detection signal and the video signal. Therefore, the status of each position where each fire detection device 20 is provided can be grasped from the processing video of the video processing unit 23 in the operation control device 19.

  The fire status judging means 24 judges whether the fire that is occurring is an initial stage fire or a fire stage fire. That is, as shown in FIG. 3, the fire situation is a relatively small scale fire situation from the time of the fire occurrence until a certain time is called the initial stage. On the other hand, the stage where the fire has continued beyond the initial stage is called the fire spread stage, which is relatively large and dangerous. Rescue operation by elevator depends on the scale of the fire, but is possible during the initial stage from the occurrence of the fire. In many cases, the rescue operation is not possible at the fire spreading stage, but it may be possible if certain conditions are met. If the fire continues beyond this fire spreading stage, it is a stage that leads to a complete or near-burning situation, and the rescue operation of the elevator is completely impossible. Therefore, when the elevator rescue operation is performed, it is necessary to determine whether the fire is in the initial stage or the fire spread stage.

  The criterion for determining whether the fire is in the initial stage or the fire spread stage is, for example, the fire duration from the time of the fire. That is, since the fire detection signal and the video signal from each fire detection device 20 are respectively input to the fire condition determination means 24, the fire duration time from the time of the fire can be measured. Therefore, if the fire duration time is within a preset time, it is determined that the fire is in the initial stage, and if the preset time is exceeded, it is determined that the fire is in the fire spreading stage.

  Note that the determination criterion of the fire condition determination unit 24 is not limited to the above-described fire duration time, and for example, the initial stage or the fire spread stage may be determined based on the number of fire detection devices 20 that have detected a fire. That is, since the fire detection signal and the video signal from each fire detection device 20 are input to the fire condition determination means 24, for example, one fire detection device 20 detects a fire when a fire occurs. When a plurality of fire detection devices 20 detect a fire over time, or when a camera 21 provided in the plurality of fire detection devices 20 detects a fire by shooting smoke or flame, the fire spreads, respectively. Judge the stage. Therefore, as described above, the initial stage or the fire spread stage can be determined based on the number of fire detection devices 20 that have detected a fire.

  The rescue operation means 25 is based on the processing result of the video processing unit 23, and whether or not there is a person in each elevator hall 15 at the time of a fire, whether there is smoke or flame in each floor, and fire doors provided in the elevator hall 15 The open / close state of 16 is used as a determination element, and further, the rescue floor is determined using the determination result of the initial stage or the fire spread stage by the fire situation determination means 24 as a determination element, and the elevator car 13 is directed to the determined rescue floor. The For example, although details will be described later, a person is detected from a video signal from a camera (referred to as a hall camera) 21 of a fire detection device 20 provided in the elevator hall 15, and the elevator hall 15 from which the person is detected is detected. If smoke or flame is detected from a video signal from a camera (referred to as a floor camera) 21 of a fire detection device 20 provided in a living area other than the elevator hall 15 on the same floor, the floor is given priority with the first priority. The floor is determined as the rescue floor, and the elevator car 13 is sent to the floor for rescue.

  The rescue operation means 25 has a door open determination means 35. This door opening determination means 35 is a rescue operation target floor when it is judged that it is safe to open the door of the elevator car 13 that has reached the rescue operation target floor by a video signal from the elevator hall 15 of the rescue operation target floor. A door opening instruction is given to the elevator car 13 that has reached. For example, when it is determined that smoke or flame does not exist in the elevator hall 15, or when the fire door 16 of the elevator hall 15 is closed, it is determined that the door can be opened, and the elevator that has reached the rescue operation target floor Give the door opening instructions.

  The elevator control means 26 moves the elevator car 13 to the rescue floor based on an instruction from the rescue operation means 25 and controls the opening and closing of the door. Further, although not shown, the elevator control means 26 is connected to the hall call registration device and the car call registration device on each floor as described above, and the car 13 is brought to the destination floor according to calls from these. Also has a function to move.

  Next, operation | movement of the whole system is demonstrated using the flowchart of FIG. 4 showing the processing content of the operation control apparatus 19. FIG.

  When any of the fire detection devices 20 in the building 11 operates and a fire is detected (step 401), images from all the cameras 21 in the building 11 are input (step 402). Among these, the evacuee detection means 31 determines whether a person is reflected in the video signal from the hall camera 21 installed in the elevator hall 15 (step 403). As a result, when no person is shown (step 403: No), the elevator performs the fire control operation and stops the operation (step 404). That is, in the fire control operation, when a fire occurs according to an operation program set in advance in the elevator control means 26, the car 13 is set in an evacuation floor (for evacuation directly leading to the outside, regardless of existing calls). To the first floor, for example, the first floor), and after waiting for the passengers to drop off, this is a standby operation. Therefore, when no person is shown in the hall camera 21 of the elevator hall 15 on each floor (there is no refugee), the elevator operation is stopped after the passengers in the car 13 are evacuated by this fire control operation.

  On the other hand, when a person is reflected in the video signal from the hall camera 21 installed in the elevator hall 15 (for example, the floor 6F) (step 403: Yes), the hall camera in which the person is reflected. The image of the floor camera (camera provided in the living section 17) 21 on the same floor 6F as 21 is analyzed (step 404). If smoke or flame is reflected in the video signal from the floor camera 21 (step 406: Yes), the rescue operation means 25 determines the floor 6F as a rescue target floor and sets the elevator car 13 The first priority is given to the rescue target floor 6F (step 407).

  That is, smoke or flames appearing on the floor camera 21 in the residential area 17 means that a considerable scale of fire has occurred on the floor 6F, and the evacuation in the elevator hall 15 on the floor 6F. Need to rescue the person as soon as possible. Therefore, a rescue operation is performed in which the elevator is directed to the floor with first priority.

  At this time, as shown in FIG. 5, the rescue target floor may be determined by adding the judgment result (step 501) by the fire situation judging means 24. That is, when smoke or flame is reflected in the video signal from the floor camera 21 (step 406: Yes), whether the fire state is the initial stage or the fire spread stage is added as a determination element, and if it is the initial stage (step 501: Yes). ) The elevator car 13 is directed to the rescue target floor 6F with the first priority (step 407). On the other hand, if it is a fire spread stage (step 501: No), it will process as a response impossible (step 504) which does not perform rescue operation. This is because smoke or flame is reflected in the video signal from the floor camera 21, and if it is in the fire spread stage, smoke or flame is generated in the elevator hall 15 when the car 13 that has been ready for the rescue operation reaches the rescue target floor. This is because there is a possibility that it is reached. If smoke and flames reach the elevator hall 15, opening the car 13 that has reached the rescue target floor may expand the fire range via the hoistway to prevent this. It is.

  Returning to FIG. 4, when smoke or flame is not reflected in the video signal from the floor camera 21 (step 406: No), is the floor where the evacuees are detected in the elevator hall 15 above the floor where the fire occurred ( Step 408) and whether it is the same floor as the fire occurrence floor (Step 409).

  If it is the same floor as the fire occurrence floor (step 409: Yes), it is determined whether the fire door 16 of this fire occurrence floor (6F) is closed (step 411). As a result, when the fire door 16 is not closed (step 411: No), the car 13 is directed to the rescue target floor 6F with the second priority (step 412). That is, even if smoke or flame is not reflected on the floor camera 17 in the living area 17, if the fire is on the floor and the fire door 16 is not closed, it is not known when the fire will expand to the elevator hall 15. Since it is necessary to rescue the evacuees in the elevator hall 15 on the fire floor 6F as soon as possible, the elevator is directed to the floor 6F with the second priority.

  If the floor is higher than the fire occurrence floor (step 408: Yes), it is determined whether the fire door 16 of this floor (7F) is closed (step 410). As a result, when the fire door 16 is not closed (step 410: No), the car 13 is directed to the rescue target floor 6F with the third priority (step 413). That is, it is a floor above the fire occurrence floor 6F, and even if smoke or flame is not reflected on the floor camera 17 in the living area 17, it is not known when the fire below the floor will spread, and the fire door 16 is not closed. Therefore, it is necessary to rescue the evacuees in the elevator hall 15 on the floor 7F as soon as possible. For this reason, the elevator is directed to the floor 7F with the third priority.

  As in the case of the first priority described above, the rescue target floor may be determined by adding the judgment result (step 501) by the fire situation judgment means 24 as shown in FIG. That is, when the fire door 16 is not closed (steps 410 and 411: Yes), whether the fire condition is the initial stage or the fire spread stage is added as a determination element, and if it is the initial stage (steps 502 and 503: Yes) The car 13 is directed to the rescue target floor with the second priority (step 412) or the third priority (step 413) as described above. On the other hand, if it is in the fire spread stage (steps 502 and 503: No), it is processed as a response impossible (step 504) where the rescue operation is not performed. Even if smoke or flame is not reflected in the video signal from the floor camera 21, if the fire door 16 is not closed and the fire door 16 is not closed, the car 13 for the rescue operation reaches the rescue target floor. This is because there is a possibility that smoke and flames have expanded to the elevator hall 15 at that time.

  Returning to FIG. 4, the fire door 16 is closed even if it is a floor above the fire occurrence floor (Step 408: Yes) or the same floor as the fire occurrence floor (Step 409: Yes). In the case (steps 410, 411: Yes), smoke and flame can be reliably shut off by the fire door 16, so the safety for the elevator hall 15 is significantly improved as compared to the case where the fire door 16 is open. Therefore, even if it is the same floor as the fire occurrence floor, the car 13 is directed to the rescue target floor 6F with the fourth priority (step 414), and if it is a floor above the fire occurrence floor, the fifth priority is taken. The car 13 is directed to the rescue target floor 7F (step 415). This is the same in the fire spreading stage, and if the fire door 16 is closed, the elevator car 13 can be rescued even in the fire spreading stage.

  If the floor is not the floor above the fire floor (Step 408: No) and is not the same floor as the fire floor (Step 409: No), that is, if it is below the fire floor, the lowest priority (No. Rescue operation is performed with (6 priority) (step 416).

  When performing such a rescue operation (steps 407, 412, 413, 414, 415, 416), all existing spares are canceled (step 417).

  When the elevator car 13 reaches the rescue operation target floor by such rescue operation, the elevator opens and accommodates the refugee. The door opening determination means 35 shown in FIG. The elevator hall 15 is confirmed to be safe even when the door is opened, and if it is determined to be safe, the elevator car 13 is instructed to open the door. That is, the door opening determination means 35 is safe when the fire door 16 of the elevator hall 15 is closed or no smoke or flame is detected by the video signal from the elevator hall 15 on the rescue operation target floor, for example. The door opening instruction is given to the elevator car 13 that has reached the rescue operation target floor. For this reason, even if the door of the car 13 that has reached the rescue target floor is opened, it is possible to surely prevent the smoke from spreading from the car 13 that has been opened to the hoistway 12 and expanding the fire.

  In the above embodiment, the cameras 21 are provided in all the fire detection devices 20, but the cameras 21 are not necessarily provided in all the fire detection devices.

  Although several embodiments of the present invention have been described, these embodiments have been presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 11 ... Building 12 ... Hoistway 13 ... Car 15 ... Elevator hall 16 ... Fire door 17 ... Living area other than an elevator hall 20 ... Fire detection device 21 ... Camera 23 ... Video processing unit 24 ... Fire condition judging means 25 ... Rescue driving means 26 ... Elevator control means 35 ... Door open judging means

Claims (9)

A fire detection device with a camera and installed at multiple locations in the building;
Based on the fire detection signals from these fire detection devices and the video signals taken by the camera, the presence or absence of people in the elevator hall in the building and the presence or absence of smoke or flames at each floor at the time of the fire are detected. , Determine the rescue floor based on these detection results, move the elevator car to the rescue floor, rescue driving means,
An elevator system characterized by comprising:   The rescue operation means determines an open / close state of a fire door provided in an elevator hall based on a video signal captured by the camera, and adds the open / close state to a determination element for determining the rescue floor. The elevator system according to 1.   It further has a fire condition judging means for judging whether the fire that is occurring is an early stage fire or a fire spreading stage fire, and the judgment result of the initial stage or the fire spreading stage is used as a judgment factor of the rescue floor decision by the rescue driving means The elevator system according to claim 1, wherein the elevator system is added.   4. The elevator system according to claim 3, wherein the fire condition judging means judges whether the fire is in an initial stage or a fire spread stage based on a fire duration time from the occurrence of the fire.   4. The elevator system according to claim 3, wherein the fire condition determination means determines whether the fire is in the initial stage or the fire spread stage based on the number of fire detection devices that have detected a fire.   The rescue operation means detects a person from a video signal from a fire detection device provided in an elevator hall, and fires other than the elevator hall on the same floor as the elevator hall from which the person is detected 6. If smoke or flame is detected from a video signal from a detection device, the elevator car is directed to rescue to the floor with the first priority. Elevator system.   The rescue operation means judges that the door can be opened when it is determined from the video signal from the elevator hall that smoke or flame does not exist in the elevator hall, and instructs the elevator that has reached the rescue operation target floor to open the door. The elevator system according to claim 1, wherein the elevator system is provided.   The rescue operation means determines that the fire door of the elevator hall is closed based on the video signal from the elevator hall, determines that the door can be opened, and instructs the elevator that has reached the rescue operation target floor to open the door. The elevator system according to claim 1, wherein the elevator system is provided.   The rescue operation means, when it is determined by the video signal from the elevator hall that there is a person in the elevator hall and the fire door of the elevator hall is closed, The elevator system according to any one of claims 3 to 5, wherein, even if it is determined, a determination is made to cause the elevator to be rescued on the floor.

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