Emergency broadcasting system

Abstract

To provide an emergency broadcasting system which improves effects of evacuation guidance further after performing fire broadcasting after a fire determination.SOLUTION: An emergency broadcasting system 1 comprises: a speaker 3 for emergency broadcasting which is provided in each location in a disaster prevention target area 11; and an emergency broadcasting control section 9 which performs emergency broadcasting through the speaker 3 for emergency broadcasting in the case of a fire. The emergency broadcasting system further comprises a human sensor 5 which is provided correspondingly to the speaker 3 for emergency broadcasting and senses the presence of a person. The emergency broadcasting control section 9 monitors sense information of each human sensor 5, stops the emergency broadcasting from the speaker 3 for emergency broadcasting corresponding to a sensing area of any human sensor 5 in a case where a person in the sensing area of the relevant human sensor 5 is in a specific state, and performs individual guidance broadcasting to the person in the specific state from the relevant speaker 3 for emergency broadcasting.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an emergency broadcast system for making emergency broadcasts in the event of a fire. [Background technology]

[0002] 2. Description of the Related Art Conventionally, emergency broadcast systems are known that, when a fire breaks out in a building, notify occupants of the building of the fire and encourage them to evacuate. When a fire detector in a building is activated, the emergency broadcast system broadcasts a voice message saying, "A fire detector on the XX floor has just been activated. We are currently checking..." from speakers on the floor where the fire detector is located and on the floor directly above it (detector alarm broadcast).

[0003] Then, if it is determined that a fire has occurred, for example, when a specified amount of time has passed since the detector was activated or when a disaster prevention center staff member confirms the fire on site and presses the button on a transmitter, a voice message will be broadcast from all speakers in the building saying, "Fire. Fire. A fire has broken out on the XXth floor. Please remain calm and evacuate" (fire broadcast).

[0004] An example of such an emergency broadcast system is disclosed in Patent Document 1. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2020-144419 A Summary of the Invention [Problem to be solved by the invention]

[0006] After a fire is confirmed, the fire announcement is broadcast simultaneously from all speakers in the building, so that everyone in the building can be quickly informed of the occurrence of a fire, which is very effective in the early stages of evacuation efforts. However, after the outbreak of a fire and the need to evacuate are announced, people begin to evacuate, but evacuation behavior varies from place to place, and since fire broadcasts consist of the same repeated audio, the effectiveness of the broadcast decreases after evacuation behavior begins. In this regard, since fire broadcast speakers are installed throughout the building and are effective equipment for transmitting audio information to evacuees, there was a desire for them to be utilized further from the perspective of saving lives.

[0007] The present invention has been made to solve the above-mentioned problems, and aims to provide an emergency broadcast system that further improves the effectiveness of evacuation guidance after a fire broadcast has been made following the diagnosis of a fire. [Means for solving the problem]

[0008] (1) The emergency broadcast system according to the present invention comprises emergency broadcast speakers installed in various locations in a disaster prevention area, and an emergency broadcast control unit that broadcasts an emergency broadcast through the emergency broadcast speakers in the event of a fire, Further comprising a human presence sensor provided in correspondence with the emergency broadcast speaker and detecting the presence of a person; The emergency broadcast control unit includes: The system is characterized by monitoring the detection information of each human presence sensor, and when a person within the detection area of ​​any human presence sensor is in a specific state, stopping the emergency broadcast from the emergency broadcast speaker corresponding to the detection area of ​​that human presence sensor, and broadcasting an individual guidance broadcast from the emergency broadcast speaker to the person in the specific state.

[0009] (2) The emergency broadcast system according to the present invention includes emergency broadcast speakers installed in various locations in a disaster prevention area, and an emergency broadcast control unit that broadcasts an emergency broadcast through the emergency broadcast speakers in the event of a fire, A human presence sensor provided in correspondence with the emergency broadcast speaker and detecting the presence of a person; A directional speaker provided in correspondence with the sensing area of ​​the human presence sensor, The emergency broadcast control unit includes: The system is characterized by monitoring the detection information of each human presence sensor, and when a person within the detection area of ​​any human presence sensor is in a specific state, an individual guidance broadcast is made to the person in the specific state from a directional speaker corresponding to the detection area of ​​that human presence sensor.

[0010] (3) In the device described in (2) above, a directional speaker control unit is further provided to control the direction of the directional speaker, The directional speaker control unit is characterized by controlling the direction of the directional speaker in response to the detection information of the human presence sensor.

[0011] (4) Furthermore, in any of the above (1) to (3), the specific state is characterized in that the human body remains within the detection area of ​​one human body sensor for a certain period of time.

[0012] (5) Also, in any one of (1) to (3) above, the specific state is characterized in that the specific state is a state of moving in a direction opposite to an appropriate evacuation direction. Effect of the Invention

[0013] In the present invention, by providing a human presence sensor and a directional speaker, it is possible to detect people who are having difficulty evacuating and provide them with individual evacuation guidance. This makes it possible to individually support people who are having difficulty evacuating after a fire announcement is broadcast to the entire building urging everyone to evacuate, improving the effectiveness of emergency announcements in saving lives. [Brief description of the drawings]

[0014] [Figure 1] 1 is a block diagram for explaining an emergency broadcast system according to an embodiment of the present invention; [Diagram 2] FIG. 13 is a diagram illustrating an example of a target of individual evacuation guidance. [Diagram 3]FIG. 3(a) is an explanatory diagram of individual evacuation guidance in pattern A of FIG. 2, and FIG. 3(b) and FIG. 3(c) are explanatory diagrams of individual evacuation guidance in pattern B of FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] 1, an emergency broadcast system 1 according to an embodiment of the present invention includes an emergency broadcast speaker 3, a human presence sensor 5, a directional speaker 7, and an emergency broadcast control unit 9. The emergency broadcast speaker 3, the human presence sensor 5, and the directional speaker 7 are provided in various locations in a multi-story disaster prevention area 11, and the emergency broadcast control unit 9 is provided in a disaster prevention center 13.

[0016] The emergency broadcast speakers 3 are used to make conventional emergency broadcasts, such as sensor alarm broadcasts and fire broadcasts, and are installed in various locations in the disaster prevention area 11 at 10 m intervals within 10 m of the wall in accordance with disaster prevention standards.

[0017] Each emergency broadcast speaker 3 is also provided with a human presence sensor 5 that detects the presence of people within a specified area, and a directional speaker 7 that emits sound in a specific direction. The human presence sensor 5 and directional speaker 7 only need to be provided for each emergency broadcast speaker 3, and may be attached to the emergency broadcast speaker 3 itself, or may be installed separately near the emergency broadcast speaker 3. In either case, the detection range of the human presence sensor 5 is set to be included in the range where the sound from the directional speaker 7 reaches. All emergency broadcast speakers 3, human presence sensors 5 and directional speakers 7 installed within the disaster prevention area 11 are connected to the emergency broadcast control unit 9 via lines.

[0018] A fire monitoring system (not shown) is provided in the disaster prevention area 11 and the disaster prevention center 13, and the emergency broadcast control unit 9 makes an emergency broadcast based on a signal from the fire monitoring system. The fire monitoring system is composed of fire detectors and transmitters installed in a disaster prevention area 11 and a receiver installed in a disaster prevention center 13 . The fire detector is, for example, a smoke detector, and transmits an alarm signal to a receiver when it detects a fire. The transmitter notifies of the occurrence of a fire by operating a push button, and when operated, transmits a fire signal to a receiver. When the receiver receives an alarm signal from a fire detector, it transmits a detector alarm signal to the emergency broadcast control unit 9. When the receiver receives a fire signal from the transmitter, it transmits a fire confirmation signal to the emergency broadcast control unit 9.

[0019] When the emergency broadcast control unit 9 receives a detector alarm signal from the receiver, it broadcasts a detector alarm from the emergency broadcast speakers 3 provided on the floor on which the activated fire detector is installed and on the floor immediately above it.

[0020] After making a sensor alarm broadcast, the emergency broadcast control unit 9 will make a fire broadcast simultaneously from all emergency broadcast speakers 3 installed in the building if any of the following conditions are met. (Condition 1) Receive a fire confirmation signal (Condition 2) After receiving the first detector alarm signal, the second detector alarm signal is received. (Condition 3) A certain amount of time has passed since the first detector alarm signal. In addition, if a fire confirmation signal is received without receiving a detector alarm signal, a fire broadcast will be made without a detector alarm broadcast.

[0021] After starting the fire broadcast, the emergency broadcast control unit 9 simultaneously activates the motion sensors 5 in various locations within the building. The human presence sensor 5 detects the presence of people within the detection area and transmits the detection information to the emergency broadcast control unit 9. The emergency broadcast control unit 9 continues the fire broadcast from the emergency broadcast speaker 3 and monitors the number and movement of people within the detection area of ​​each human presence sensor 5 ((1) in FIG. 1).

[0022] When the emergency broadcast control unit 9 determines from the detection information of each human sensor 5 that a person within the detection area of ​​any human sensor 5 is in a specific state, it broadcasts an individual guidance broadcast from the directional speaker 7 corresponding to that human sensor 5. The specific state that is the target of this individual guidance broadcast will be explained using Figure 2. The dots within the "human sensor detection range" in Figure 2 indicate people detected by the human sensor 5.

[0023] For example, as in pattern A in Fig. 2, a person who remains alone for a certain period of time within the detection area of ​​one human sensor 5 is targeted for an individual guidance broadcast. When the emergency broadcast control unit 9 detects a person in the state of pattern A, it makes an individual guidance broadcast from the directional speaker 7 corresponding to the detection area of ​​the human sensor 5 ((2) in Fig. 1). The individual guidance broadcast in pattern A is shown in Fig. 3(a).

[0024] As an example of an individual guidance announcement in pattern A, a voice message saying "Please start moving while staying low to avoid inhaling smoke" is broadcast to encourage people 15 who are stranded to evacuate safely.

[0025] Furthermore, as in pattern B of Fig. 2, people who are moving in the opposite direction to the appropriate evacuation direction (for example, the direction of an emergency exit) may be targeted for individual guiding broadcasts. When a person in the pattern B state is detected, the emergency broadcast control unit 9 also makes an individual guiding broadcast from the directional speaker 7 corresponding to the detection area of ​​the human sensor 5 ((2) in Fig. 1). The individual guiding broadcast in pattern B is shown in Fig. 3(b).

[0026] In the pattern B, the individual guidance broadcast may be, for example, "You are away from the evacuation exit" or "Please proceed in the opposite direction" to guide the evacuees 15 in the correct evacuation direction.

[0027] Also, a directional speaker 7 whose directional range (range in which sound can reach) is smaller than the detection range of the human presence sensor 5 can be used. In this case, a directional speaker control unit is further provided to control the direction of the directional speaker 7, and based on the detection information of the human presence sensor 5, specifically the position information of the person, the direction of the directional speaker 7 is directed in the direction of the person to perform individual guiding broadcasting.

[0028] For example, if a person 15 (pattern B) moving away from an emergency exit is detected, the direction of travel is controlled to follow the movement of this person 15, while broadcasting a voice message saying "You are moving away from the emergency exit" (Fig. 3(b)). If the person 15 hears this voice and changes direction of travel toward the emergency exit, the direction of travel is controlled to follow this movement, while broadcasting a voice message saying "You are approaching the emergency exit" or "You are XX meters away from the emergency exit" to support evacuation (Fig. 3(c)).

[0029] In addition, when neither pattern A nor B applies, such as in pattern C, the fire announcement (all-building sounding) continues from the emergency broadcast speaker 3. While the fire announcement is being made throughout the entire building, individual guidance announcements are made simultaneously only in certain areas, but since the directional speaker 7 emits sound in a straight line in only one direction, the audio of the individual guidance announcement is not mixed with the audio of the simultaneous fire announcement broadcast throughout the entire building, and the target people can hear the individual guidance announcement clearly.

[0030] Furthermore, when an individual guiding broadcast is made from the directional speaker 7, it is more preferable to stop the emergency broadcast (fire broadcast) from the emergency broadcast speaker 3 corresponding to the same area. By stopping the fire broadcast only in the area where the individual guiding broadcast is made, the target person can hear the individual guiding broadcast more clearly.

[0031] The emergency broadcast control unit 9 continues the individual guidance broadcast from the directional speaker 7 and monitors the detection information of the human presence sensor 5 ((3) in FIG. 1). When the target person for the individual guiding broadcast leaves the detection area of ​​the human presence sensor 5, the emergency broadcast control unit 9 detects this and stops the individual guiding broadcast from the directional speaker 7 corresponding to that area. Then, the emergency broadcast (fire broadcast) is resumed from the emergency broadcast speaker 3 corresponding to that area ((4) in FIG. 1).

[0032] As described above, in this embodiment, by providing the human sensor 5 and the directional speaker 7, it is possible to detect people who have difficulty evacuating and provide them with individual evacuation guidance. This makes it possible to individually support people who have difficulty evacuating after urging everyone in the building to evacuate through a fire broadcast that is broadcast to the entire building, improving the effectiveness of emergency broadcasts in saving lives.

[0033] The target of the individual guidance broadcast of the present invention is not limited to the case where the number of people having difficulty evacuating is detected as one. In the patterns A and B shown in Fig. 2, when multiple evacuees in the same situation are detected within the area, the individual guidance broadcast described above will be made. On the other hand, an individual guidance broadcast may be made only when the number of people in difficulty in evacuation detected is one. Since people who are alone tend to feel more anxious, individual guidance broadcasts are given priority.

[0034] 1 shows an example in which the emergency speaker 3 and the directional speaker 7 are configured as separate units, the two speakers may be configured as one unit. For example, a single speaker may be provided with the functions of the emergency speaker 3 and the directional speaker 7, and the presence or absence of directionality may be switched depending on the broadcast.

[0035] In addition, in the above embodiment, the directional speaker 7 is used to make the individual guiding broadcast, but the individual guiding broadcast may be made from the emergency broadcast speaker 3 without providing the directional speaker 7. In that case, the individual guiding broadcast is made as follows. The emergency broadcast control unit 9 monitors the detection information of each human presence sensor 5, and when a person in the detection area of ​​any of the human presence sensors 5 is in a specific state (pattern A or pattern B in FIG. 2), it stops the emergency broadcast from the emergency broadcast speaker 3 corresponding to the detection area of ​​that human presence sensor 5. Then, the emergency broadcast speaker 3 makes the above-mentioned individual guidance broadcast to people in the above-mentioned specific state. In this manner, the contents of the broadcast from the emergency broadcast speaker 3 may be switched to perform individual guidance broadcasts. [Explanation of symbols]

[0036] 1 Emergency Broadcast System 3 Emergency broadcast speaker 5. Human Sensor 7. Directional Speakers 9 Emergency Broadcast Control Unit 11 Disaster prevention areas 13. Disaster Prevention Center 15 people

Claims

1. An emergency broadcast system including an emergency broadcast speaker provided in each disaster prevention area and an emergency broadcast control unit that broadcasts an emergency through the emergency broadcast speaker in the event of a fire, Further comprising a human presence sensor provided in correspondence with the emergency broadcast speaker and detecting the presence of a person; The emergency broadcast control unit includes: This emergency broadcast system is characterized by monitoring the detection information of each human presence sensor, and when a person within the detection area of ​​any human presence sensor is in a specific state, stopping an emergency broadcast from an emergency broadcast speaker corresponding to the detection area of ​​the human presence sensor, and broadcasting an individual guidance broadcast from the emergency broadcast speaker to the person in the specific state.

2. An emergency broadcast system including an emergency broadcast speaker provided in each disaster prevention area and an emergency broadcast control unit that broadcasts an emergency through the emergency broadcast speaker in the event of a fire, A human presence sensor provided in correspondence with the emergency broadcast speaker and detecting the presence of a person; A directional speaker provided in correspondence with the sensing area of ​​the human presence sensor, The emergency broadcast control unit includes: This emergency broadcast system is characterized by monitoring the detection information of each human presence sensor, and when a person in the detection area of ​​any human presence sensor is in a specific state, making an individual guidance broadcast to the person in the specific state from a directional speaker corresponding to the detection area of ​​the human presence sensor.

3. A directional speaker control unit that controls a direction of the directional speaker is further provided.

3. The emergency broadcast system according to claim 2, wherein the directional speaker control unit controls the direction of the directional speaker in response to the detection information of the human presence sensor.

4. 4. The emergency broadcast system according to claim 1, wherein the specific state is a state in which a person remains within a detection area of ​​one human sensor for a certain period of time.

5. 4. The emergency broadcast system according to claim 1, wherein the specific state is a state in which the person is moving in a direction opposite to an appropriate evacuation direction.

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