JP6261701B2 - Wireless communication system - Google Patents

Description

  The present invention relates to a wireless communication system that performs communication using radio waves.

  Conventionally, an automatic fire alarm system has an acoustic device that emits a predetermined volume at predetermined intervals (in Japan, within a horizontal distance of 25 m) to warn of the occurrence of a fire, notify the occurrence of a fire and prompt evacuation. Met.

  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 high-intensity LED lamp, or the like as a light source has been put into practical use (Non-Patent Document 1). And 2).

  On the other hand, a wireless automatic fire alarm system has been devised in which a part of the electric circuit of the automatic fire alarm system is made wireless because of the labor saving of the electric wire laying work and the high degree of freedom in the renewal work. A repeater connected by wire to a fire receiver is provided at a wireless relay site such as a floor unit of a building, and wireless communication is performed between the repeater and the wireless fire detector (see Patent Document 1).

JP 2010-114632 A

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.

  When 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 emits 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.

  On the other hand, the conventional wireless automatic fire alarm equipment, when a wireless fire detector is arranged at a position where radio waves do not reach the repeater provided at the wireless relay base, in order to perform wireless communication between them, During this time, it was necessary to further provide a dedicated relay device. If such a function as a relay device can be provided in a large number of alarm devices installed at a predetermined interval, the number of devices to be installed can be reduced. However, the alarm device generates power fluctuation and noise associated with flash emission, and has a difficulty in performing stable wireless communication.

  An object of the present invention is to provide a wireless alarm system and an alarm device using flash light that can notify a person with hearing impairment without causing a photosensitivity attack to prompt evacuation by notifying a fire occurrence. . It is another object of the present invention to enable the alarm device to be stably used as a relay device for a wireless automatic fire alarm facility. Another object of the present invention is to perform stable wireless communication without being affected by power fluctuations and noise associated with control.

(1) The wireless communication system of the present invention transmits a beacon at a predetermined cycle and communicates with a higher-level wireless communication apparatus that communicates via a communication slot defined by the beacon, and the communication slot defined by the received beacon. And a lower-order wireless communication device that communicates with a higher-order wireless communication device via a common communication slot and controls flash emission based on the received beacon. Based on the beacon, the device starts time measurement all at once, repeats the time period from the initial value to a predetermined value, and performs time measurement synchronously and determines the timing for controlling the flash emission. Timing means, and based on the timing value of the timing means, the beacon transmission timing and the flash emission control period, Wherein the allowed to form the communication slots excluded period.
(2) Further, in the wireless communication system of the present invention, in (1), the predetermined period for transmitting the beacon is an integral multiple of the time measurement period. Furthermore, by increasing the frequency of beacon transmission, the oscillation circuit that serves as a reference for the timing means may be replaced with an inexpensive one.
(3) In the wireless communication system according to the present invention, in (1) or (2), the wireless communication device that has received the beacon transmits the beacon to a lower-order wireless communication device after the timing period. It is characterized by sending out.
(4) The present invention relates to a monitoring device that determines the occurrence of an emergency based on a signal from the detection means and transmits an emergency signal, and a wireless communication that transmits a beacon having a predetermined period and an alarm signal based on the emergency signal. In an alarm system and alarm device comprising: a repeater having means; and at least one alarm device that flashes light at a predetermined light emission cycle based on the alarm signal, the relay device measures time for each light emission cycle. Repeatedly, the predetermined period is set to a predetermined integer multiple of the light emission period by sending out the beacon every round of a predetermined number of times, and has a timing unit that regulates the control timing of the own device. By repeating the clocking for each cycle and counting from the initial value based on the beacon, all are synchronized to perform the same clocking, and based on the predetermined clocking value The timer has a timing means for determining the timing of flash emission and the control timing of the own device, and the repeater and the alarm device have the beacon transmission timing and the flash emission timing determined by the timing means for common timing. During a predetermined period excluding the time, a communication slot is formed in the wireless communication means provided in the own device, and wireless communication of signals other than the beacon is performed through the communication slot.
(5) Also, in the present invention according to (4), the repeater and the alarm device wirelessly communicate signals other than the beacon using a communication slot group formed by a plurality of the communication slots. When receiving the beacon, the alarm device retransmits the beacon with a time difference equal to the light emission period, and when receiving a signal through the communication slot group, the alarm device retransmits the signal received in a subsequent communication slot in the communication slot group. .
(6) Further, in the present invention according to (4) or (5), the alarm device further includes a wireless communication unit that wirelessly communicates with a wireless communication unit included in a detection unit that detects an emergency. When an emergency detection signal indicating that an emergency has been detected is received from the detection means, an emergency detection signal is transmitted through the communication slot, and the repeater intervenes the emergency detection signal directly or in the communication path. When the alarm device is relayed and received, the emergency detection signal is transmitted to the monitoring device, and the monitoring device that has received the emergency detection signal determines the occurrence of an emergency and outputs an emergency signal. Send it out.
(7) Moreover, in this invention, in (4)-(6), the said radio | wireless communication means with which the said repeater and the said alarm device are equipped communicates by radio | wireless two different frequencies, and the said frequency is 1st, The beacon, the signal via a communication slot other than the beacon at a second frequency, and if the alarm device has a self-diagnosis function, the self-diagnosis information from the alarm device at the first frequency, Each of the devices communicates wirelessly, and when the alarm device receives a signal at the second frequency, the alarm device retransmits the signal received through the communication slot in preference to the first frequency.
(8) Further, according to the present invention, in (4) to (7), the alarm device has a group identification ID determined by grouping for each evacuation route. The occurrence of an emergency situation and its range are determined based on the signal, an emergency signal is sent by designating a group identification ID in a range that requires evacuation, and the repeater sends an alarm signal with the group identification ID The alarm device performs flash emission when the group identification ID matches the group identification ID of its own device.
(9) Further, according to the present invention, in (4) to (8), the alarm device has a unique identification ID according to the order of the evacuation routes in which the alarm devices are arranged, and the monitoring device detects Based on the emergency signal from the means, the occurrence of the emergency situation and its position are judged, the identification ID of the alarm device closest to the emergency occurrence position is designated and an emergency signal is transmitted, and the repeater is located at the emergency occurrence position. An alarm signal is sent with the identification ID of the alarm device closest to the alarm device, and the alarm device compares the identification ID of the alarm device closest to the emergency occurrence position with the identification ID of the own device to obtain a difference. The corresponding light emission order is calculated, and the flash emission is delayed by a predetermined time difference proportional to the light emission order, and the flash emission is sequentially performed from the emergency occurrence position toward the emergency exit with a predetermined time difference to guide evacuation. Do.

  According to the configuration of (1) above, a communication slot is formed in a period excluding the beacon transmission timing and a predetermined period in which communication is affected by the control in the wireless communication apparatus, and communication is performed via this communication slot. Therefore, it is possible to communicate without being affected by the control.

  In addition, according to the configuration of (2), since the timing start timing of the timing means provided in the plurality of wireless communication devices is determined by the beacon, it is possible to prevent the common timing of the timing means from being distorted. As a result, the oscillation circuit serving as the reference of the time measuring means can be replaced with an inexpensive one. For example, replace the oscillator with high accuracy, for example, a crystal oscillator with an inexpensive ceramic oscillator, or replace the oscillator circuit with the oscillator with an inexpensive oscillator circuit without the oscillator. Can do.

  Also, according to the configuration of (3) above, the wireless communication device relays the beacon to the lower wireless communication device, so that the wireless communication device disposed at a position where radio waves from the higher wireless communication device do not reach There is an effect that it is possible to prevent the common timekeeping of the timekeeping means from going wrong via the wireless communication device on the way.

  In addition, according to the configuration of (4) above, the clocking means of the repeater and the alarm device operate in synchronism so that the timing at which the alarm device flashes and the timing at which the fire alarm signal is transmitted and received do not overlap. The transmission and reception of the alarm signal is not affected by the fluctuation of the power supply accompanying the flash emission, and the alarm signal can be transmitted reliably. Furthermore, since each of a large number of alarm devices does not emit light at different timings, there is an effect that a person with hearing impairment can be informed of the occurrence of a fire and prompt an evacuation without causing a photosensitivity attack. .

  In addition, according to the configuration of (5) above, the alarm device relays the beacon and the alarm signal without being affected by fluctuations in the power supply caused by flash light emission, so that the radio wave from the repeater cannot be received. The provided alarm device has an effect that the time measuring means can be synchronized with another alarm device or the time measuring means of the repeater via the alarm device on the way.

  Moreover, according to the configuration of (6) above, since the alarm device relays the emergency detection signal from the emergency detection means, there is an effect that a relay dedicated to the emergency detection means is not required. In addition, according to the configuration of (7) above, a signal that must be processed immediately is preferentially communicated using the second frequency, so that, for example, an emergency detection signal due to the occurrence of a fire or an alarm signal associated with the occurrence of a fire, for example. Communication is given the highest priority, fire is quickly alerted, and the flashing of the alarm device can be started without delay. Further, according to the configuration of (8) above, since it can be specified according to the emergency occurrence range, there is an effect that it is possible to warn a range requiring evacuation without causing interference. Moreover, according to the structure of said (9), there exists an effect that an alarm device can be flash-emitted in order from an emergency occurrence position to an emergency exit, and evacuation guidance can be performed.

It is a block diagram of the alarm system which concerns on Embodiment 1 of this invention. It is operation | movement 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 operation example of the alarm system which concerns on Embodiment 2 of this invention. It is explanatory drawing of the other operation example of the alarm system which concerns on Embodiment 2 of this invention. It is operation | movement explanatory drawing of the alarm system which concerns on Embodiment 3 of this invention. It is operation | movement explanatory drawing of the alarm system which concerns on Embodiment 3 of this invention. It is operation | movement explanatory drawing 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 includes a fire detector 2 as a fire detection means as a detection means for detecting an emergency, and a fire receiver 1 as a monitoring device connected to the fire detector 2 through a signal line, It comprises. The fire receiver 1 determines the occurrence of a fire as an emergency based on the fire detection signal S1 that is sent when the fire detector 2 detects a fire, and the fire signal as an emergency signal when it is determined as a fire. Send S2.

  Furthermore, the alarm system according to the present embodiment is connected to the fire receiver 1 through a signal line, and sends out a fire alarm signal S3 as an alarm signal based on the fire signal S2 sent out by the fire receiver 1. A repeater 3 having communication means is provided. The repeater 3 is disposed at each position of the fire prevention object, for example, for each floor, and sends out a beacon having a predetermined cycle to synchronize the entire alarm system.

  Then, one or more alarm devices having a wireless communication means (not shown) for receiving the fire alarm signal S3 from the repeater 3 and flashing at a predetermined light emission period based on the fire alarm signal S3, for example, as shown in FIG. Are provided with alarm devices 41-47. Further, as an evacuation route, it is common sense that evacuation in two directions is possible so as not to be trapped by a fire hand, but as shown in FIG. 2, the emergency exit E1 is located at a different position on the evacuation route. , E2 is provided. In the alarm devices 41 to 47, at least one alarm device, for example, the alarm device 41 is disposed in a range where the radio wave from the repeater 3 reaches. Here, for the sake of simplicity, the alarm device that can communicate wirelessly with the repeater 3 is only the alarm device 41, and the alarm devices 41 to 47 are described as being arranged along the evacuation route in the order of the assigned numbers.

  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 a known system known as a so-called R-type system. In addition, the repeater 3 may be incorporated in a device arranged for each base position, for example, a general panel, an indoor fire hydrant, a transmitter, a marker lamp, or the like so that wireless communication is possible.

  The repeater 3 and the alarm devices 41 to 47 each have a synchronization timer (not shown) as synchronization means that regulates its own control and synchronizes based on the beacon. In other words, each synchronization timer is synchronized with the beacon, operates to perform the same time measurement all at once, and controls so that the communication timing is uniformly determined. The synchronization timers included in the alarm devices 41 to 47 are controlled so that the flash emission timing is synchronized.

  Next, based on FIG. 2 and FIG. 3, operation | movement of the alarm system which concerns on Embodiment 1 of this invention is demonstrated.

  Here, it is assumed that the fire detector 2 as detection means for detecting an emergency is electrically connected to the fire receiver 1 and that a fire F1 has occurred in the monitoring range of the fire detector 2.

  When the fire detector 2 detects the fire F1, the fire detector 2 sends a fire detection signal S1 to the fire receiver 1. The fire receiver 1 determines the occurrence of a fire based on the received fire detection signal S1. For example, the occurrence of a fire is determined by using a well-known storage function or the like so as to eliminate false alarms due to transient noise or the like. Then, when it is determined that a fire has occurred, a fire is displayed on the board surface of the aircraft, and the main acoustic device provided in the aircraft and the district acoustic device disposed on the fire prevention object are sounded, and a fire signal S2 is transmitted to the repeater 3. Send it out. In Japan, the district acoustic device is disposed within a horizontal distance of at least 25 m in Japan. In general, in the event of a fire, the district acoustic device is controlled to ring on the fire floor and its directly above floor, or on the entire building. The alarm device in the present invention acts as a visual alternative to the district sound device.

  The repeater 3 and the alarm devices 41 to 47 have a synchronous timer that makes a round at a predetermined cycle equal to the light emission cycle T2 of the alarm devices 41 to 47. Based on the synchronization timer, the repeater 3 transmits a beacon for synchronously controlling the entire alarm system from the wireless communication means. That is, the repeater 3 always sends out the beacon at a predetermined period T1 regardless of the normal state or fire. In FIG. 3, a signal transmitted every period T1 of the repeater 3 transmission signal S3-1 corresponds to the beacon. The beacon is a unique signal such as having a single control code so that it can be distinguished from other radio signals, and a device that has received the beacon can reliably identify the beacon.

  The beacon period T1 may be an integer multiple of 1 or more with respect to the flash emission period T2. For example, in FIG. 3, the cycle T1 of the beacon is set to be twice the light emission cycle T2 of the alarm devices 41 to 47.

  If the start time of the synchronization timers provided in the alarm devices 41 to 47 is determined by the beacon, thereafter, all the synchronization timers provided in the repeater 3 and the alarm devices 41 to 47 repeat the same operation every predetermined period T2. However, if it is left as it is, it will be out of sync for a long period and the synchronization will be lost. Therefore, the beacon is synchronized again by that time. Furthermore, by increasing the frequency of such periodic synchronization processing, the oscillation circuit that serves as a reference for the synchronization timer can be replaced with an inexpensive one. For example, replace the oscillator with high accuracy, for example, a crystal oscillator with an inexpensive ceramic oscillator, or replace the oscillator circuit with the oscillator with an inexpensive oscillator circuit without the oscillator. Is possible.

  Here, the wireless communication other than the beacon, which is characteristic in the present embodiment, will be described. As described above, since the beacon transmission time and flash emission time can be grasped by the synchronous timer that operates so as to regulate the control time of the own device in synchronization with the entire alarm system, the period excluding these times In addition, a period for wireless communication can be set except for the beacon. This period is a period in which the beacon is not received, and therefore synchronization processing of the synchronization timer is not performed, and further, flash emission that may cause power supply fluctuations and noise is not performed, so a period in which stable wireless communication is possible It is. During this period, a communication slot is formed in the wireless communication means provided in the device, and wireless communication other than the beacon is performed through this communication slot. This communication slot may be formed in a plurality of communication slot groups to communicate a plurality of information.

  In the present embodiment, as shown in FIG. 3, wireless communication between the repeater 3 and the alarm devices 41 to 47 is performed at a plurality of frequencies, specifically at two frequencies. Then, the repeater 3 transmits the beacon at the first frequency, and after the time when the alarm devices 41 to 47 emit flash light in the event of a fire (naturally, the flash light is not emitted normally) until the next beacon transmission. A communication slot group formed by a plurality of communication slots is provided at the first frequency so that self-diagnosis information as a result of self-diagnosis of the alarm devices 41 to 47 is communicated. If the self-diagnosis information of the alarm devices 41 to 47 is unnecessary, the communication slot group at the first frequency can be omitted. Further, in the second frequency, a communication slot group formed by a plurality of communication slots in a period from when the beacon is transmitted to when the alarm devices 41 to 47 emit flash light in the event of a fire (naturally, flash light is not emitted normally). Is provided so as to communicate an urgent signal such as an alarm signal S3. The alarm devices 41 to 47 process the signal received at the second frequency in preference to the signal received at the first frequency. Accordingly, it is possible to communicate the fire alarm signal associated with the occurrence of the fire with the highest priority, promptly warn of the occurrence of the fire, and start flash emission of the alarm device without delay.

  As described above, in the present embodiment, the beacon to be periodically transmitted and the self-diagnosis information of the alarm devices 41 to 47 are set to the first frequency, and the urgent signal such as the alarm signal S3 is set to the second frequency. Although each is used properly, the frequency for wireless communication is not limited to a plurality, and may be one. For example, as shown in FIG. 3, the beacon and communication slot group provided at the first frequency and the communication slot group provided at the second frequency are in different time periods so as not to overlap each other. Since these are provided, all of these may be provided at the same frequency. However, as will be described later in the third embodiment, when the same communication slot is shared by different signals, it is necessary to determine the order of priority, and when the frequency to be used is only the first frequency. When there are many signals to be shared, care should be taken because there is a possibility that information may be lost.

  Here, operation | movement of the repeater 3 at the time of a fire is demonstrated. The repeater 3 always sends out the beacon at a predetermined period T1 as described above. However, when the repeater 3 receives the fire signal S2 from the fire receiver 1, the fire alarm signal S3 is sent to the adjacent alarm device 41. Is sent out. This fire alarm signal S3 is made via the communication slot described above. For example, in the present embodiment, in the transmission signal S3-2 of the repeater 3 transmitted at the second frequency, the control code representing the fire alarm signal S3 is transmitted in the first communication slot in the communication slot group. (See FIG. 3).

  The alarm device 41 includes a synchronization timer that operates in synchronization with the beacon, and includes a communication slot group that communicates at the same timing as the repeater 3 by the synchronization timer. Therefore, the fire alarm signal S3 Is received as a control code representing the fire alarm signal S3 in the first slot of the communication slot group at the second frequency.

  The alarm device 41 that has received the fire alarm signal S3 in this manner causes the light emitting means provided in the own device to flash when the synchronization timer provided in the alarm device 41 indicates a predetermined value. Then, since the flash light is emitted every time the synchronization timer indicates the predetermined value, the operation is performed so as to repeat the flash light emission every period T2 of the synchronization timer.

  On the other hand, the alarm device 41 relays and transmits the beacon. That is, after receiving the beacon, it may be retransmitted with a delay equal to the light emission period T2. Since this time difference is equal to the period T2 of the synchronization timer, the synchronization timer included in the next alarm device 42 that receives the relay-transmitted beacon is synchronized with the synchronization timer included in another device.

  Further, the alarm device 41 receives a signal received via the communication slot group, for example, a fire alarm signal S3, in the communication slot that follows in the same communication slot group, that is, the second slot of the communication slot group at the second frequency. The control code representing the fire alarm signal S3 is retransmitted. That is, an important and urgent signal such as the fire alarm signal S3 can be relayed in a time shorter than the synchronous timer period T2.

  The alarm devices 42 to 47 operate in the same manner as described above, and in the event of a fire, all the alarm devices 41 to 47 operate so as to repeat flash light emission in synchronization.

  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.

  The alarm devices 41 to 47 to be controlled are grouped to give a group identification ID, and the fire alarm signal S3 is transmitted so as to include the group identification ID, so that only the target alarm devices 41 to 47 are grouped. The flash can be emitted with reliable control. That is, the alarm devices 41 to 47 perform control so that flash emission is performed when the group identification ID information included in the received fire alarm signal S3 matches the group identification ID of the own device.

  In addition, when a control code indicating other control contents is further provided in the control code transmitted in the communication slot group, the alarm devices 41 to 47 are flashed by the control code for causing an alarm operation, and the control for stopping the alarm operation is performed. The code can stop the flash emission. 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. A signal including a control code corresponding to the recovery signal is transmitted, and the alarm devices 41 to 47 that have received the signal control to stop the flash emission. In other words, the relay device 3 relays and transmits the recovery signal from the fire receiver 1 to the alarm devices 41 to 47, and the flash emission of the alarm devices 41 to 47 is stopped by the recovery operation in the fire receiver. There is an effect that can be.

Moreover, the alarm devices 41 to 47 may include an audio device, and when the fire alarm signal S3 is received, the alarm devices 41 to 47 emit a flash and may sound the audio device. If the sound produced by this acoustic device is continuously constant, timing control is not particularly necessary, but when sound with change such as sweep sound, voice message, etc. is emitted, sound is emitted at discrete timing. Since the meaning may not be heard, control is performed to synchronize in the same manner as the flash emission. In this case, since the period T2 of the synchronization timer is short, the acoustic device may be controlled to synchronize (for example, using a frequency divider) at a plurality of periods of the synchronization timer so as to obtain a desired period.
[Embodiment 2]
Based on FIG. 4 and FIG. 5, 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 difference between the present embodiment and the first embodiment is that the alarm devices 41 to 47 do not flash at the same time in synchronism in the event of a fire, but the alarm devices 41 to 47 are directed toward the emergency exit. The flashes are emitted sequentially in time, and the evacuation is directed toward the emergency exit. Here, for simplicity of explanation, it is assumed that the alarm device closest to the emergency exit E1 is the alarm device 41, and the alarm device closest to the emergency exit E2 is the alarm device 47.

  And in order to implement | achieve the said operation | movement, first, the alarm devices 41-47 are made to have unique identification ID according to the order of the evacuation route in which each was arrange | positioned.

  The fire receiver 1 determines the occurrence of a fire and its position based on the fire detection signal S1 from the fire detector 2 having position information (for example, each having an address), and among the alarm devices 41 to 47 A fire signal S2 is transmitted by designating the identification ID of the alarm device closest to the fire occurrence position. The repeater 3 that has received this fire signal S2 sends the fire alarm signal S3 with the identification ID of the alarm device closest to the fire occurrence position.

  The alarm devices 41 to 47 that have received the fire alarm signal S3 compare the identification ID of the alarm device closest to the fire occurrence position included in the fire alarm signal S3 with the identification ID of the own device, and emit light corresponding to the difference. Calculate the order. That is, each alarm device can calculate and determine what number the flash device should emit. Multiplying the light emission order obtained in this way by a time corresponding to the time difference of light emission in order to obtain a predetermined time difference of the own device proportional to the light emission order, and the flash light emission is delayed by the time difference. In this way, evacuation guidance is performed by flashing light sequentially in a predetermined time difference from the alarm device closest to the fire occurrence position.

  FIG. 4 shows a state where the fire detector 2 closest to the alarm device 41 has detected the fire F1. The fire detector 2 sends a fire detection signal S1 including its own address to the fire receiver 1. At this time, the identification ID of the alarm device 41 closest to the fire occurrence position is attached, the fire receiver sends out the fire signal S2, and the repeater 3 sends out the fire alarm signal S3.

  Each alarm device that receives the fire alarm signal S3 directly or through another alarm device compares the identification ID given to the fire alarm signal S3 with its own identification ID, and the light emission order is Device 41 is first, alarm device 42 is second, alarm device 43 is third, alarm device 44 is fourth, alarm device 45 is fifth, alarm device 46 is sixth, and alarm device 47 is seventh. Is calculated. If the identification ID is a serial number, this calculation can be performed most easily because it is only necessary to obtain a difference.

  If the time difference of flash emission in order is set to δ in advance, the n-th alarm device flashes with a predetermined time difference proportional to the light emission order corresponding to [δ · (n−1)]. If the light is emitted, the alarm devices 41 to 47 emit the flash light in the order of R3 so as to flow from the fire occurrence position toward the emergency exit (in this case, the emergency exit E2) with a certain time difference.

  In addition, when the fire detector 2 does not have an individual address or the like and information on the fire occurrence position cannot be obtained, flash light is emitted in order from each alarm device toward the nearest emergency exit, and toward the nearest emergency exit. Evacuation can be guided.

For example, comparing the emergency exit E1 and the emergency exit E2, it is assumed that the alarm devices closer to the emergency exit E1 are the alarm devices 41 to 43, and the alarm devices closer to the emergency exit E2 are the alarm devices 44 to 47. In this case, if the identification ID of either the alarm device 44 or the alarm device 45 is attached and the fire signal S2 and the fire alarm signal S3 are set in advance, the alarm device 44 or 45 is directed toward the emergency exit E1. While flashing in order in the direction of R1, it is possible to flash in order in the direction of R2 from the alarm device 44 or 45 toward the emergency exit E2, and to evacuate toward the closer of the two emergency exits.
[Embodiment 3]
Based on FIG. 6 thru | or FIG. 8, the structure and operation | movement of the alarm system which concern on Embodiment 3 of this invention are demonstrated. The same components as those of the second embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  The first difference between the present embodiment and the second embodiment is that fire detection means as a detection means for detecting a fire as an emergency, that is, wireless fire detectors 51 to 57 are provided. The alarm devices 41 to 47 are newly provided with wireless communication means for performing wireless communication with the wireless communication means included in 51 to 57. Then, any of the alarm devices 41 to 47 that have received a fire detection signal indicating that a fire has been detected from any of the fire detectors 51 to 57 relays the fire detection signal and is located on the route to the repeater 3 The device relays this one after another, which is received by the repeater 3 and sends a fire detection signal to the fire receiver 1.

  Here, for the sake of simplicity of explanation, the alarm device that can receive the fire detection signals from the fire detectors 51 to 57 is described as being limited to the alarm device having the same number at the end of the attached number.

  First, the operation from the occurrence of a fire until the fire receiver 1 receives a fire detection signal will be described with reference to FIG.

  It is assumed that fire F2 has occurred in the monitoring range of the fire detector 54, the fire detector 54 has detected a fire, and has sent a fire detection signal S21. When receiving the fire detection signal S21, the alarm device 44 that can receive the fire detection signal S21 transmits a control code representing the fire detection signal via the first communication slot of the communication slot group of the second frequency.

  The first communication slot corresponds to a communication slot in which the alarm device 41 receives the fire alarm signal S3 from the repeater 3 for the fire alarm signal described in the first embodiment. Therefore, when the alarm device 44 has already received the fire alarm signal, it conflicts with the process of relay transmission, and it is necessary to prioritize one of them. In this case, the occurrence of a fire has already been confirmed, and the new fire detection signal S21 has a high possibility of the spread of fire from the first fire source. Therefore, the fire alarm is not relayed but received via the fourth communication slot. It is assumed that signal relay transmission is performed in the fifth communication slot. If the fire detection signal S21 is utilized, the fire detection signal S21 may be relayed and transmitted using the first frequency communication slot group in preference to the self-diagnosis information of the alarm device.

  When the fire detection signal S21 is the first report, there is no fire alarm signal in the communication slot group of the second frequency, and therefore the communication slot group is empty, so the alarm device 44 sets the first communication slot. The fire detection signal S22 is relayed and transmitted.

  When the alarm device 43 located on the communication path to the repeater 3 receives the fire detection signal S22 in the first communication slot of the second frequency communication slot group, the alarm device 43 receives the fire detection signal S22 in the second frequency communication slot group. Relay transmission is performed as a fire detection signal S23 from the slot. As described above, the relay transmission in the alarm devices 41 to 47 is always performed in the ascending communication slots as in the first embodiment. This is necessary for promptly performing wireless relay. Conversely, when relay transmission is performed in descending communication slots, there is a time loss close to the synchronization timer period T2 until the next relay transmission opportunity comes. .

  Next, the alarm device 42 that has received the fire detection signal S23 in the second communication slot of the second frequency communication slot group relays and transmits it as the fire detection signal S24 from the third communication slot of the second frequency communication slot group. . Further, the alarm device 41 that has received this fire detection signal S24 in the third communication slot of the second frequency communication slot group relays it as a fire detection signal S25 from the fourth communication slot of the second frequency communication slot group. Then, the repeater 3 receives this. The repeater 3 that has received the fire detection signal S25 sends the fire detection signal S26 to the fire receiver 1, and the fire receiver 1 finally makes a fire determination.

  Next, communication after the fire receiver 1 determines a fire will be described with reference to FIG.

  Note that the fire detection signals S21 to S25 described above include address information of the fire detector 54 indicating the fire occurrence position. Accordingly, it is assumed that the fire receiver 1 determines the occurrence and position of a fire.

  First, the fire receiver 1 selects the identification ID of the alarm device closest to the fire position. For this purpose, a database for storing the relationship between the address of the fire detector and the closest alarm device may be provided in advance, or a constant value may be provided between the address of the fire detector and the identification ID of the alarm device closest thereto. A rule may be established so that the identification ID can be automatically derived from the address by calculation or the like.

  When the identification ID of the alarm device closest to the fire position (in this case, the identification ID of the alarm device 44 corresponds) is determined, the fire receiver sends the fire alarm signal S31 with the identification ID of the alarm device 44. To do. And the repeater 3 which received this attaches identification ID of the alarm device 44 to the control code showing a fire alarm signal as the fire alarm signal S32 through the first communication slot of the communication slot group of the second frequency. Send it out.

  The subsequent operation is the same as in the first and second embodiments. However, in the second frequency communication slot group, there are situations where a fire detection signal originating from the fire detector 54 and a fire alarm signal originating from the fire receiver 1 and the repeater 3 may exist simultaneously. In this case, each alarm device is arranged to give priority to the latter fire alarm signal.

  As in the second embodiment, the evacuation route is directed from the alarm device 44 closest to the fire occurrence position to the direction R4 toward the emergency exit E1, and from the alarm device 44 to the direction R5 toward the emergency exit E2. Each of the alarm devices located in the flash fires in order with a predetermined time difference, and performs evacuation guidance from the fire source to the emergency exit.

  In this manner, the wireless fire detectors 51 to 57 can be easily installed without providing a dedicated wireless relay device in a range where radio waves reach the alarm devices 41 to 47.

1 Fire receiver, 2 Fire detector (wired), 3 Repeater,
41, 42, 43, 44, 45, 46, 47 Alarm device,
51, 52, 53, 54, 55, 56, 57 Fire detector (wireless),
E1, E2 emergency exit,
F1, F2 fire,
R1, R2, R3, R4, R5 Light emission order

Claims (3)

A higher-order wireless communication device that transmits a beacon at a predetermined period and communicates via a communication slot defined by the beacon, and a higher-order wireless communication via a communication slot that is common to the communication slot defined by the received beacon In a wireless communication system comprising: a low-order wireless communication device that communicates with a communication device and controls flash emission based on the received beacon.
The plurality of wireless communication devices are:
Based on the beacon, the clocking means for starting the clocking at the same time and performing a common clocking by repeatedly counting the clocking cycle from the initial value to the predetermined value and determining the timing of the flash emission control. With
Wireless communication system, characterized in that on the basis of the time count value of the counting means, allowed to form the communication slot in a period excluding the period of control of the flash light emission and delivery timing of the beacon.
  The wireless communication system according to claim 1, wherein the predetermined period for transmitting the beacon is an integral multiple of the timing period. 3. The wireless communication system according to claim 1, wherein the wireless communication device that has received the beacon transmits the beacon to a lower-order wireless communication device after the timing period. 4.

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