JP2014063207A - Alarm system and alarm device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an alarm system and alarm device using flash light, which are able to warn even hearing impairment people of a fire break and urge them to evacuate, without causing optically-stimulated epileptic seizure.SOLUTION: An alarm system comprises: a relay configured to intermittently emit a fire alarm signal at a first period on the basis of a fire sensor signal; and an alarm device configured to intermittently emit flash light at a second period on the basis of the fire alarm signal. The first period is an integral multiple of the second period. The flash light emission is controlled in synchronization with the fire alarm signal with a time difference shorter than the second period.

Description

  The present invention relates to an alarm system and an alarm device of an automatic fire alarm facility that issues an alarm with flash light when a fire occurs.

  Conventionally, the automatic fire alarm facility has been provided with an acoustic device that emits a predetermined volume at predetermined intervals to warn of the occurrence of a fire, notifying the occurrence of a fire and prompting evacuation.

  However, when a person who should evacuate in the event of an emergency situation has a hearing impairment, the spread of an alarm device that works on senses other than hearing such as light to notify the emergency situation is desired. An alarm device that emits flash light using an electronic flash typified by a strobe (registered trademark) that emits intense flash light, a large-intensity LED lamp, or the like as a light source has been put into practical use.

Japanese Patent Laid-Open No. 08-161679

http://www.hochiki.co.jp/business/kahou/webcatalog/pdf/hc_ssfa1110.pdf http://www.saxa.co.jp/product/business/pdf/SHW-101.pdf

  Conventionally, an alarm device that is turned off during normal times and emits flash light in the event of a fire has been controlled by each alarm device itself.

  If a large number of such alarm devices are installed at predetermined intervals like the alarm sound device of the automatic fire alarm facility and are activated simultaneously when a fire occurs, each of the many alarm devices may emit light at different timings. It is known that such artificial strong light stimulation may cause photosensitivity seizures such as light-stimulating epilepsy in humans (for example, a private television broadcasting station on December 16, 1997). The case that a viewer of a TV animation with a strong light stimulation scene broadcasted by the company caused a photosensitivity attack was widely reported and well-known.

  It is an object of the present invention to provide a wireless alarm system and an alarm device using flash light that can cause a person with hearing impairment to urge evacuation without causing a photosensitivity attack. And

(1) The present invention provides a fire receiver that sends a fire signal based on a fire detection signal from a fire detection means, and fires intermittently at a predetermined first period based on the fire signal from the fire receiver. Repeater having a first wireless communication means for transmitting an alarm signal and intermittently at a predetermined second period based on a fire alarm signal having a second wireless communication means and received by the second wireless communication means And a plurality of alarm devices having a light emitting means for flashing, the first period is set to an integer multiple greater than 1 with respect to the second period, The flash unit emits light so that the second wireless communication unit synchronizes with a predetermined time difference shorter than the time obtained by subtracting the flash emission time from the second period after receiving the fire alarm signal. To control Once the fire alarm signal is received, when the fire alarm signal is not received again after the fire alarm signal is received until the second period elapses, the flash light is emitted at the second period. It is characterized by comprising a control means for controlling the above.
(2) Further, according to the present invention, when the control means of (1) receives the fire alarm signal from the second wireless communication means, the second wireless communication is performed with a time difference equal to the second period. The control unit is configured to start retransmission of the fire alarm signal from the means and repeatedly retransmit the fire alarm signal in the first period.
(3) Further, according to the present invention, the alarm device of (2) is grouped for each evacuation route connected to the emergency exit, and the light emitting means is flashed after the second wireless communication means receives the fire alarm signal. The time difference for light emission is set so as to increase by a predetermined difference from the side far from the emergency exit for each group.
(4) Further, according to the present invention, the alarm device according to (1) to (3) transmits a fire detection signal caused by a fire alarm of the wireless fire detection means via the second wireless communication means. It is also relay means for receiving and relaying directly or indirectly, and the fire detection signal is transmitted to the fire receiver via the relay means of another alarm device or the first wireless communication means of the repeater. It is characterized by being.
(5) Further, according to the present invention, in (1) to (4), when the fire receiver sends a restoration signal based on a restoration operation, the repeater and the alarm device are replaced with the fire alarm signal. The alarm device relaying the restoration signal and receiving the restoration signal is controlled to stop the light emitting means.

  According to the configuration of the first aspect of the present invention, the timing of flash emission at a predetermined cycle does not overlap with the timing of transmission / reception of a fire alarm signal. It operates in synchronism stably without receiving light, and each of a large number of alarm devices does not emit light at different timings. Therefore, there is an effect that a person with hearing impairment can be informed of the occurrence of a fire and prompt evacuation without causing a photosensitivity attack.

  Moreover, according to the structure of Claim 2 of this invention, since an alarm device relays and communicates a fire alarm signal, the alarm device arrange | positioned in the position which the electromagnetic wave from a repeater does not reach is an alarm device in the middle. There is an effect that the flash can be emitted in synchronization with each other.

  Further, according to the configuration described in claim 3 of the present invention, the alarm device is sequentially flashed at predetermined intervals toward the emergency exit for each evacuation route connected to the emergency exit, so that evacuation guidance is directed toward the emergency exit in the event of a fire. There is an effect that can be done.

  Moreover, according to the structure of Claim 4 of this invention, there exists an effect that a wireless fire detector can be easily installed in the range which an electromagnetic wave reaches an alarm device.

  Moreover, according to the structure of Claim 5 of this invention, there exists an effect that the flash light emission of an alarm device can be stopped sequentially by the recovery operation in a fire receiver.

It is explanatory drawing of the alarm system which concerns on Embodiment 1 of this invention. It is a time chart figure of the alarm system which concerns on Embodiment 1 of this invention. It is explanatory drawing of the alarm system which concerns on Embodiment 2 of this invention. It is a time chart figure of the alarm system which concerns on Embodiment 2 of this invention. It is explanatory drawing of the alarm system which concerns on Embodiment 3 of this invention. It is a time chart figure of the alarm system which concerns on Embodiment 3 of this invention.

[Embodiment 1]
First, based on FIG. 1, the structure of the alarm system which concerns on Embodiment 1 of this invention is demonstrated.

  The alarm system according to the present embodiment is connected to a fire detector 2 as a fire detection means and a fire detection signal S1 which is connected to the fire detector 2 through a signal line and is emitted when the fire detector 2 detects a fire. And a fire receiver 1 that transmits a fire signal when it is determined that a fire has occurred. These are the basic components of so-called automatic fire alarm equipment. Wireless communication means (not shown) (hereinafter referred to as first wireless communication means) that is connected to the fire receiver 1 by a signal line, receives the fire signal S2 sent from the fire receiver 1, and sends out a fire alarm signal S3. The repeater 3 which has is connected.

  In addition, between the fire detector 2 and the fire receiver 1 and between the fire receiver 1 and the repeater 3 may be connected by individual signal lines, or connected by a common signal line and multiplexed. You may comprise so that transmission may be performed. The former is known as a so-called P-type system, and the latter is known as a so-called R-type system. The said repeater 3 is arrange | positioned at the position used as each base of a fire prevention target object, for example, for every floor. The repeater 3 may be incorporated in equipment arranged at each base position, for example, a general panel, an indoor fire hydrant, a transmitter, a marker lamp, or the like.

  A plurality of alarm devices 4 a, 4 b, 4 c, 4 d,... (Not limited to four because they are so-called star-shaped arrangements within a range where radio waves from the repeater 3 reach. As an alarm device 4). The alarm device 4 has wireless communication means (not shown) (hereinafter referred to as second wireless communication means) that receives a fire alarm signal S3 sent from the repeater 3, and when receiving the fire alarm signal S3, It has a light emitting means (not shown) that emits flash light intermittently at a period (hereinafter referred to as a second period) T2. The light emitting means is an electronic flash typified by a strobe (registered trademark) that emits intense flash light, a high-intensity LED lamp, or the like. The light emitting means is appropriately selected to have an amount of light that can be visually recognized through the smoke caused by the fire when the automatic fire alarm facility determines that a fire has occurred (reference: 1970 Fire Research Institute report “Visibility in smoke ( I) ", 1971 Japan Fire Society Proceedings" About the Prospect Distance in Smoke ", etc.

  Next, with reference to FIG.1 and FIG.2, operation | movement of the alarm system which concerns on this Embodiment is demonstrated.

  Fire F1 occurs and fire detector 2 detects the fire. In FIG. 1, the smoke from the fire F1 is depicted as being detected by the fire detector 2 which is a smoke detector.

  The fire detector 2 that has detected a fire sends a fire detection signal S1 to the fire receiver 1, and the fire receiver 1 that has received the fire detection signal S1 makes a fire determination and determines that the fire has been detected. The fire signal S2 is sent out with a slight delay from the signal S1. Up to this point, the operation is as a well-known automatic fire alarm system, and a fire judgment is made to eliminate the malfunction of the fire detector 2 due to temporary dust, water vapor, noise, etc. by the storage function of the fire receiver 1 or the like. Is called.

  The repeater 3 that has received the fire signal S2 sent out by the fire receiver 1 sends out a fire alarm signal S3 from the first wireless communication means. The fire alarm signal S3 is intermittently repeatedly transmitted at a predetermined cycle (hereinafter referred to as a first cycle) T1. The first period T1 is set to an integer multiple of 1 or more with respect to the second period T2. The reason for setting such a period is to synchronize the flash emission of the alarm device 4 with the fire alarm signal S3 sent from the repeater 3.

  The control means of the alarm device 4 that has received the fire alarm signal S3 by the second wireless communication means flashes the light emitting means at a timing when the fire alarm signal S3 is not received and at the second period T2. To control. That is, after the second wireless communication means receives the fire alarm signal S3, it is shorter than the time obtained by subtracting the flash emission time from the second period T2, and the fire alarm signal S3 and the flash emission do not overlap. Thus, the light emitting means is controlled to flash in the second period T2 so as to synchronize with a predetermined time difference dT longer than the signal length of the fire alarm signal S3.

  When the first cycle T1 is an integer multiple greater than 1 with respect to the second cycle T2, after the alarm device 4 receives the fire alarm signal S3, until the second cycle T2 elapses. When the fire alarm signal S3 is not received again during this period, the light emitting means is controlled to flash repeatedly at the second period T2. When the fire alarm signal S3 sent out in the first cycle T1 is received again, the alarm device 4 receives the fire alarm signal S3 and then the flash emission time is reduced from the second cycle T2. The light emitting means is caused to flash with a predetermined time difference dT shorter than that, and the alarm device 4 emits flash in synchronization with the fire alarm signal S3.

  Therefore, the first cycle T1 may be set to an integer multiple of 1 or more with respect to the second cycle T2, but may be set to an integer multiple greater than 1.

  By controlling the flash emission in this way, the timing of flash emission in a predetermined cycle and the timing of sending and receiving fire alarm signals do not overlap, so the transmission and reception of fire alarm signals has the effect of power fluctuations and noise associated with flash emission. It operates in synchronism stably without receiving light, and each of a large number of alarm devices does not emit light at different timings. Therefore, there is an effect that a person with hearing impairment can be informed of the occurrence of a fire and prompt evacuation without causing a photosensitivity attack.

  Although the first cycle T1, which is the transmission cycle of the fire alarm signal S3, has been described as being set to an integer multiple greater than 1 with respect to the second cycle T2, the predetermined cycle n of the first cycle T1 is described. The minute time T1n is set to be an integer multiple greater than 1 with respect to the second period T2, the alarm device 4 receives the fire alarm signal S3 every n times, and other fire alarm signals S3 It may be ignored. In this case, the fire alarm signal S3 is repeatedly transmitted every first cycle T1, but the alarm device 4 receives the fire alarm signal S3 every time the fire alarm signal S3 is received n times. It operates to synchronize every time T1n for a predetermined period n.

  Further, although the fire alarm signal S3 can be communicated with only a carrier wave, it is possible to prevent malfunction due to interference by modulating it with an arbitrary modulation method and transmitting it as a radio wave having a coded data string. it can. That is, the alarm device 4 to be controlled is grouped and given an identification ID, and the fire alarm signal S3 is transmitted so as to include this identification ID, so that only the target alarm device 4 group is reliably controlled. Flash light can be emitted.

Further, a control code indicating the control content can be further provided in the coded data string so that flash emission is performed with the control code for performing an alarm operation, and flash emission can be stopped with a control code for stopping the alarm operation. That is, when a fire is extinguished and a recovery operation is performed in the fire receiver 1, when the fire receiver 1 sends a recovery signal based on the recovery operation to the repeater 3, the repeater 3 replaces the fire alarm signal S3. The alarm device 4 that has received a signal including a control code corresponding to the recovery signal controls to stop the flash emission of the light emitting means. In other words, the relay 3 relays the recovery signal from the fire receiver 1 to the alarm device 4, and the flash emission of the alarm device 4 can be sequentially stopped by the recovery operation in the fire receiver. There is an effect.
[Embodiment 2]
Based on FIG. 3 and FIG. 4, the structure and operation | movement of the alarm system which concerns on Embodiment 2 of this invention are demonstrated. The same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  The first difference of the present embodiment from the first embodiment is that the alarm device 4 further has a signal relay function and sequentially relays the fire alarm signal S3 sent from the repeater 3 in a relay manner. . That is, even if the alarm device 4 is arranged at a position where radio waves do not reach directly from the repeater 3, the alarm device 4 is arranged on the route and sequentially relayed, and all the alarm devices 4 are synchronized. Flash light can be emitted.

  The second difference of the present embodiment from the first embodiment is that the wireless fire detectors 5a, 5b, 5c,... (Not limited to three, so the following is omitted. 5), when the fire is detected, the alarm device 4 and the repeater 3 perform relay communication to the fire receiver 1. That is, the alarm detection device 4 and the relay device 3 sequentially relay and communicate the fire detection signal sent out by the wireless fire detector, and the fire receiver 1 can receive the fire detection signal.

  The operation for relay communication with the wireless fire detector 5 is the same as that of the third embodiment described below, and the description thereof will be omitted here as it will be described later in the third embodiment.

  The difference in the configuration of the alarm system of the present embodiment from that of the first embodiment is that the alarm device 4 is in order from the side closer to the repeater 3, the alarm device 4a, the alarm device 4b, the alarm device 4c, and the alarm device 4d. It is in the point where it is arranged. And these are arrange | positioned in the position where an electromagnetic wave reaches at least between the alarm device 4 or the repeater 3 adjacent to each other. Note that a new alarm device 4 may be arranged from each of the alarm devices 4 so as to branch into a star shape as in the first embodiment, but is omitted here for the sake of simplicity.

  Next, the operation of the present embodiment will be described with reference to FIGS.

  The fire detector 2 senses the fire F1 and sends a fire detection signal S1, and the fire receiver 1 that receives this fire judges it to fire and sends a fire signal S2, and the repeater 3 that receives this fire fire signal The process until S3 is sent is the same as in the first embodiment.

  Next, relay-type relay communication, which is an operation unique to the present embodiment, will be described. Here, for simplification of explanation, it is assumed that the fire alarm signal S3 from the repeater 3 can communicate with only the alarm device 4a closest to the repeater 3, and the alarm device 4b connected to the alarm device 4c is also connected to the adjacent alarm device 4c. Only communication is possible. The same applies to the alarm device 4c and the alarm device 4d.

  The timing of flash emission of the alarm device 4a that has received the fire alarm signal S3 from the repeater 3 is controlled in the same manner as in the first embodiment by a control means (not shown) provided inside, but in this embodiment, Then, after the second period T2, a fire alarm signal S4a is transmitted from the second wireless communication means. Then, the fire alarm signal S3 is received again after the first period T1, and the same operation is repeated. That is, control is performed so that the fire alarm signal S4a is repeatedly retransmitted in the first period T1.

  The time T1n corresponding to the predetermined period n of the first period T1 is set to be an integer multiple greater than 1 with respect to the second period T2, and the alarm device 4 transmits the fire alarm signal S3 n times. It is the same as in the first embodiment that it may be received every time and the other fire alarm signal S3 may be ignored.

  The alarm device 4b that has received the fire alarm signal S4a from the alarm device 4a emits flash at the same timing as the alarm device 4a, but the received fire alarm signal S4a is only for the second period T2 than the fire alarm signal S3. Since the alarm device 4a is delayed, the alarm device 4b emits the first flash light at the timing when the alarm device 4a performs the second flash light emission.

  Thereafter, the alarm devices 4c and 4d start flash emission as shown in the time chart of FIG. 4 with a delay of the second period T2 from the start of flash emission of the alarm devices 4b and 4c as the relay communication transmission sources. Eventually, everything will be flashed in sync at the same timing. In other words, since the alarm device 4 relays the fire alarm signal, the alarm device 4 arranged at a position where the radio wave from the repeater 3 does not reach is synchronized with the flash device in the middle of the flash emission. There is an effect that can be made.

  In addition, when a recovery operation is performed by the fire receiver 1 after the fire is extinguished, a signal including a control code corresponding to the recovery signal shown in the first embodiment instead of the fire alarm signals S3, S4a, S4b, and S4c. Are sequentially relayed, and the alarm devices 4a, 4b, 4c, and 4d sequentially stop flash emission, and finally all stop flash emission. In other words, since the relay 3 and the alarm device 4 relay and communicate the recovery signal from the fire receiver 1, the flash emission of the alarm device 4 can be stopped sequentially by the recovery operation in the fire receiver. Play.

For simplification of explanation, it is assumed that the fire alarm signal S3 from the repeater 3 can communicate only with the alarm device 4a closest to the repeater 3, and the alarm devices 4 adjacent thereto are also adjacent to each other. However, even if a non-adjacent alarm device 4 receives the fire alarm signal S3, only a plurality of alarm devices 4 that perform a synchronous operation at the same time are provided. There is no change in playing.
[Embodiment 3]
Based on FIG. 5 and FIG. 6, the configuration and operation of the alarm system according to Embodiment 3 of the present invention will be described. The same components as those of the second embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  The difference from Embodiment 2 is that alarm devices 40a, 40b, 40c, and 40d (hereinafter collectively referred to as alarm device 40) are grouped for each evacuation route connected to emergency exit E. The flash light emission is performed at a predetermined time difference in order from the far side. That is, flash light is emitted sequentially toward the evacuation exit E, and evacuation guidance is performed toward the evacuation exit E.

  Therefore, in the present embodiment, unlike the second embodiment, the time difference dT that causes the light emitting means to flash after the second wireless communication means receives the fire alarm signal is far from the emergency exit E for each group. From the side, it is set so as to increase with a time difference that is visible to humans, for example, a predetermined difference Δ of about 0.2 seconds to 0.5 seconds.

  That is, for the alarm devices 40 in the same group, as shown in the time chart of FIG. 6, the alarm device 40a emits flash light after a time difference dT from receiving the fire alarm signal S3. Next, the alarm device 40b emits flash light dT + Δ after receiving the fire alarm signal S40a. Next, the alarm device 40c emits flash light dT + 2Δ after receiving the fire alarm signal S40b. Further, next, the alarm device 40d emits flash light dT + 3Δ after receiving the fire alarm signal 40c. As described above, since the alarm device 40 is flashed sequentially at the predetermined interval Δ toward the emergency exit E for each evacuation route connected to the emergency exit E, the evacuation guidance can be performed toward the emergency exit E when a fire occurs. Play.

  For simplification of explanation, it is assumed that the fire alarm signal S3 from the repeater 3 can communicate only with the alarm device 4a closest to the repeater 3, and the alarm devices 4 adjacent thereto are also adjacent to each other. Communication was possible only with. At this time, if the alarm device 4 that is not adjacent receives the fire alarm signal S3, the order of flash emission may be out of order, so that each alarm device 4 has a unique identification ID, and the above series of fire alarm signals are displayed. At the time of transmission, a unique identification ID may be designated and transmitted to the destination alarm device 4, and control may be performed so that the alarm device 4 that matches the specified identification receives the fire alarm signal. .

  Next, the operation of relay communication with the wireless fire detector 5 will be described. As described above, this operation is the same as that of the second embodiment, and also serves as an explanation thereof.

  Here, for simplification of explanation, it is assumed that only the wireless fire detectors 5a, 5b, and 5c are disposed in the ranges that can be received by the alarm devices 40a, 40b, and 40c, respectively.

  Here, the smoke from the fire F2 is depicted as being detected by the fire detector 5a which is a smoke detector, but the wireless fire detector 5a which has detected the fire F2 detects the fire toward the alarm device 40a. The signal Sfa is sent out.

  The alarm device 40a that has received the fire detection signal Sfa by the second wireless communication means relays it to the repeater 3 as a fire detection signal Sf4 instead of the fire alarm signal, and receives the fire detection signal Sf4. The device 3 relays this to the fire receiver 1 as a fire detection signal Sf3. The fire receiver 1 that has received the fire detection signal Sf3 makes a fire determination, and when it is determined that there is a fire, it sends out a fire signal S2, and the repeater 3 that has received it sends out a fire alarm signal S3. The subsequent operation of the alarm device 4 or 40 is as described in the second and third embodiments. It should be noted that communication may be performed using the control code as described in the first embodiment so that the fire alarm signal S3, the restoration signal, and the like can be distinguished from the fire detection signals Sfa, Sf4, and Sf3.

  As described above, there is an effect that the wireless fire detector 5 can be easily installed in a range where radio waves reach the alarm device 4 or 40.

1 Fire receiver, 2 Fire detector (wired), 3 Repeater,
4a, 4b, 4c, 4d, 40a, 40b, 40c, 40d alarm device,
5a, 5b, 5c, 5d Fire detector (wireless),
F1, F2 Fire, E Emergency exit

Claims (5)

A fire receiver that transmits a fire signal based on a fire detection signal from a fire detection means, and a first that intermittently transmits a fire alarm signal at a predetermined first period based on the fire signal from the fire receiver A repeater having the above-mentioned wireless communication means, and light emission that has a second wireless communication means and intermittently flashes at a predetermined second period based on the fire alarm signal received by the second wireless communication means A warning system comprising a plurality of warning devices having means,
The first period is set to an integer multiple greater than 1 with respect to the second period;
The alarm device is
After the second wireless communication means receives the fire alarm signal, the light emitting means is caused to flash so as to synchronize with a predetermined time difference shorter than the time obtained by subtracting the flash light emission time from the second period. To control and
Once the fire alarm signal is received, when the fire alarm signal is not received again after the fire alarm signal is received until the second period elapses, the flash light is emitted at the second period. To control,
An alarm system and an alarm device comprising control means. The control means of the alarm device is
When the second wireless communication means receives the fire alarm signal, the second wireless communication means starts resending the fire alarm signal at a time difference equal to the second period, and fires at the first period. The alarm system and the alarm device according to claim 1, wherein the alarm system is controlled to retransmit the alarm signal repeatedly. The alarm device is grouped for each evacuation route connected to the emergency exit,
The time difference for flashing the light emitting means after the second wireless communication means receives the fire alarm signal is set to increase by a predetermined difference from the side far from the emergency exit for each group. The alarm system and alarm device according to claim 2. The alarm device is also a relay means for receiving and relaying a fire detection signal caused by a fire alarm of the wireless fire detection means directly or indirectly via the second wireless communication means,
The fire detection signal is transmitted to the fire receiver via the relay means of another alarm device or the first wireless communication means of the repeater. Description alarm system and alarm device.
When the fire receiver sends a restoration signal based on a restoration operation, the repeater and the alarm device relay communicate the restoration signal instead of the fire alarm signal, and the alarm device that has received the restoration signal emits light emitting means. 5. The alarm system and the alarm device according to claim 1, wherein the alarm system and the alarm device are controlled so as to stop.