JP6470065B2 - Alarm system - Google Patents

Description

  The present invention provides an alarm system that, when a fire alarm of a fire detector is received by a receiver, notifies the occurrence of a fire by flashing light by wirelessly transmitting a control message from a receiver side to a light alarm device in a warning area. About.

  Conventionally, in buildings such as office buildings, store buildings, hospitals, hotels, etc., an automatic fire alarm system has been used as an alarm system for monitoring the fire and notifying people in the building when a fire occurs. Is installed. In such an automatic fire alarm system, it is common to notify the occurrence of a fire by sound such as a buzzer, a bell, and a message. In addition to this sound notification, display notification using an LED, a red lamp, or the like is also performed as appropriate.

  By the way, in recent years, there has also been proposed an alarm system for notifying the occurrence of a fire by blinking high-luminance white light (flash light) having high visibility along with sound (for example, see Patent Documents 1 to 3). . According to such an alarm system, since the occurrence of a fire is notified not only by sound but also by flashing of strong light, for example, a hearing-impaired person can recognize the occurrence of a disaster early and reliably.

  A wireless alarm system has also been proposed in order to reduce the labor and cost of wiring (for example, see Patent Document 4). The wireless alarm system outputs a fire signal to the repeater via the electrical circuit and receives an alarm command signal (control message) from the repeater when the fire alarm is received by the fire receiver. The light alarm device drives the light emitting unit to emit light after a predetermined delay time Δt after receiving the alarm command signal, and repeats light emission at a predetermined cycle T. In addition, for an optical alarm device installed in a place where radio waves do not reach, a radio wave repeater is provided on the way to relay the alarm command signal.

  When the radio wave repeater receives the alarm command signal from the repeater connected to the fire receiver, the alarm command signal is relayed and transmitted after the period T has elapsed. When the delay time Δt has elapsed, the light emitting unit is driven to emit light, and thereafter light emission is repeated at a period T. As a result, although there is a time lag in the first light emission depending on the presence or absence of relaying, when all the light alarm devices start light emission, synchronized light emission is performed with a period T, and light sensitivity due to light emission at disjoint timing Make it possible to eliminate seizure problems.

Utility Model Registration No. 3113946 JP 2005-165740 A JP 2011-198194 A JP 2014-186430 A

  By the way, in a radio alarm system that performs an optical alarm, the radio wave environment of the alert area to be monitored varies, and the radio wave environment may change depending on the time zone of the day, the season, and the like. For this reason, when the control telegram is wirelessly transmitted from the light alarm control device on the receiver side, the same control telegram is continuously transmitted a plurality of times. In addition, since the wireless light alarm device is battery-driven, intermittent reception is performed to ensure a sufficient battery life.

  In this way, when the optical communication control device continuously transmits a message for a plurality of times and the light alarm device intermittently receives the light control message and controls the light emission, the control message continuously transmitted from the light alarm control device Which control message is effectively received is determined by the timing of the carrier sense performed every intermittent reception cycle performed asynchronously by the optical alarm device, and is predetermined from the reception of the alarm command signal every cycle T as in the past. Even if the light emitting unit is controlled to emit light after the delay time Δt, there is a problem in that the light emission timing of the light control device varies and it is not possible to achieve light emission synchronization that matches the light emission timing.

  In addition, with regard to the light alarm device installed at a far place where the radio wave from the light alarm control device on the receiver side does not reach, the light alarm device installed in the meantime has a radio wave relay function, from the light control device However, in this case as well, among the control messages that are continuously relayed and transmitted, which control message is to be received effectively depends on the intermittent reception of the light alarm device at the relay destination. The light emission timing of the light control device varies depending on the timing of carrier sense performed for each cycle, and similarly, there is a problem that light emission synchronization that matches the light emission timing cannot be achieved.

  The present invention relates to a case in which a control message continuously transmitted from a light alarm control device is intermittently received by a plurality of light alarm devices and a case where it is relayed by a light alarm device, the light emission timings of the plurality of light alarm devices are made to coincide with each other to perform synchronized light emission An object of the present invention is to provide a wireless alarm system that enables this.

(Alarm system)
The present invention relates to an alarm system in which a fire detector is connected to a sensor line drawn from a receiver, a fire alarm of the fire detector is detected by the receiver, a fire alarm is output, and a fire alarm signal is output. In
When a fire alarm signal is input from the receiver, a control telegram for instructing light control is transmitted, and from the predetermined position of the telegram within the predetermined light emission period (Tf) when the control telegram is received from the start of light emission A light warning control device that includes the light emission waiting time information (Ts) in a control message and transmits the information multiple times;
A light alarm device that starts light emission of the light emitting unit based on the light emission waiting time information (Ts) included in the control message received first by intermittent reception and repeats light emission by the light emission period (Tf);
Is provided.

(Repeat control message transmission and transmission suspension)
When the fire alarm signal is input from the receiver, the light alarm control device sets a predetermined transmission cycle including a predetermined transmission time (T1) and a transmission suspension time (T2) a plurality of times, and sets each transmission time (T1). ) Repeat the transmission of the control message several times.

(Relay transmission)
The light alarm control device registers the identification information of all the light alarm devices that are the transmission destinations, and when the control message is transmitted and the confirmation response message is not received from all the transmission destinations, the relay that instructs the relay transmission Send an instruction message,
When receiving a relay instruction message from the light alarm control device during light emission control, the light alarm device generates a relay control message and relays it.

(Control message relay 1)
The light alarm control device transmits the relay instruction message including the light emission waiting time information (Tr0) from the end of reception to the start of the next light emission when the relay instruction message is received,
The light alarm device under light emission control that has received the relay instruction message corrects the relay light emission waiting time information (Tr0) corrected in consideration of the relay required time (ΔTi) for each message required to relay the message. Tri) is included in the relay control message and relayed,
The light warning device at the relay destination starts light emission of the light emitting unit based on the corrected relay light emission waiting time information (Tri) included in the relay control message received first by intermittent reception, and repeats light emission according to the light emission cycle (Tf).

  Here, the relay required time (ΔTi) is the time from the end of reception of the relay instruction message from the light alarm control device to the end of relay transmission of the relay control message by the light alarm device. Here, i is an integer such that i = 1, 2, 3,.

(Light emission waiting time information)
The light alarm device under light emission control that received the relay instruction message is
When transmission of the relay control message ends within the first light emission cycle in which the relay instruction message has been transmitted, the relay light emission waiting time corrected by subtracting the relay required time (ΔTi) for each message from the relay light emission waiting time information (Tr0) Information (Tri = Tr0−ΔTi) is calculated and included in the relay control message,
(Comment: Since the light emission waiting time information Tr of the relay instruction message is an initial value, it is set to Tr0, and the relay required time ΔT changes for each message. Therefore, this is set to ΔTi, and the relay light emission waiting for each message calculated as a result is set. The time information is Tri.)
When transmission of the relay control message ends within the second and subsequent light emission periods, one or more light emission periods (Tf) corresponding to the order of the light emission periods to which the transmission end timing belongs in the relay light emission waiting time information (Tr0). The relay light emission waiting time information (Tri = (Tr0 + n · Tf) −ΔTi) corrected by subtracting the relay required time (ΔTi) for each message from the time obtained by adding is calculated and included in the relay control message.

(Control message relay 2)
The light alarm control device transmits the relay instruction message including the transmission waiting time information (Ta) from the start of the light emission cycle to the start of message transmission when the control message is received,
The light alarm device that has received the relay instruction message relays and transmits a relay control message including the light emission waiting time information (Ts),
The relay-destination light alarm device controls the light emission start of the light-emitting unit based on the light-emission waiting time information (Ts) included in the relay control message received first by intermittent reception, and repeats light emission every light-emission cycle.

(Continuous transmission of relay control messages)
Upon receiving the relay instruction message, the light alarm device under light emission control sets a predetermined transmission cycle consisting of a predetermined transmission time (T1) and a transmission pause time (T2) a plurality of times, and transmits each transmission time (T1). Repeat relay transmission of relay control message multiple times.

(Basic effect of alarm system)
The present invention relates to an alarm system in which a fire detector is connected to a sensor line drawn from a receiver, a fire alarm of the fire detector is detected by the receiver, a fire alarm is output, and a fire alarm signal is output. In this case, when a fire signal is input from the receiver, a control telegram for instructing light control is transmitted, and a predetermined position of the telegram within a predetermined light emission period (Tf) when the control telegram is received A light warning control device for transmitting a plurality of times by including light emission waiting time information (Ts) from the start of light emission to the start of light emission, and a light emitting unit by light emission waiting time information (Ts) included in the control message first received by intermittent reception Is provided with a light alarm device that repeats light emission according to the light emission cycle (Tf), so that a plurality of control messages transmitted repeatedly from the optical communication control device can Even if a different timing is received according to the intermittent reception of the light, the light emission of the light emitting unit according to the light emission cycle at the predetermined position of the control message, for example, when the light emission waiting time information included in the reception message has elapsed since the end of reception By repeating the above, it is possible to match the light emission start timings of the plurality of light control devices, and to perform the synchronized light emission in which the blinking of the plurality of light alarm devices match.

(Effects of repeated transmission of control message and suspension of transmission)
In addition, when the fire alarm signal is input from the receiver, the light alarm control device sets a predetermined transmission cycle including a predetermined transmission time (T1) and a transmission suspension time (T2) a plurality of times, and sets each transmission time. Since transmission of the control message was repeated a plurality of times during (T1), intermittent reception was performed by carrier sense by continuously transmitting the control message during a plurality of transmission times with a transmission pause time in between. It is possible to perform the light alarm control by reliably receiving the control telegram with the light alarm device.

(Effects of relay transmission)
In addition, the optical warning control device registers the identification information of all the optical warning devices that are transmission destinations, and instructs relay transmission when a confirmation message is not received from all transmission destinations by transmitting a control message. When the light alarm device receives a relay instruction message from the light alarm control device during the light emission control, the relay control message is generated and relay-transmitted. If a control telegram is received by a light control device, no unnecessary relay is instructed, and relaying is instructed only when there is a light alarm device that has not received a control telegram. It enables relaying corresponding to the radio wave environment for the installed light alarm device, and can suppress useless relay operations.

(Effect of control message relay 1)
In addition, the light alarm control device transmits the relay instruction message including the relay light emission waiting time information (Tr0) from the end of reception to the start of the next light emission when the relay instruction message is received, and receives the relay instruction message. The light alarm device during the light emission control repeats transmission of the relay control message a plurality of times and corrects the relay light emission waiting time information (Tr0) in consideration of the relay required time (ΔTi) for each message required to relay the message. The relay light emission waiting time information (Tri) is included in the relay control message for relay transmission, and the relay destination optical alarm device corrects the relay light emission waiting time information (Tri) that is included in the relay control message that is first received effectively by intermittent reception. ) To start light emission of the light emitting unit and repeat light emission in the light emission cycle (Tf), and the required relay time (ΔTi) is determined by the light alarm device from the end of reception of the relay instruction message from the light alarm control device. Since the time until the end of relay transmission of relay control message is set, the optical warning control device intermittently receives by transmitting the relay instruction message once when the confirmation response message is not received from all the transmission destinations. Based on the reception of the relay instruction message, the light alarm device that is performing continuous reception by receiving the control message by performing relay control that repeatedly transmits a plurality of relay control messages, and the relay requirement included in each relay message By including the relay light emission waiting time information corrected in consideration of the time, even if the relay destination one or more light alarm devices receive the relay control message at different timings according to the respective intermittent reception, the control message When the corrected waiting time information included in the received message has passed since the end of reception, the light emission of the light emitting unit is repeated according to the light emission period, so that the light emission start type of the relay destination light control device is At the same time, it can also match the blinking of the light alarm device of the relay that is already under light emission control, and even when the control telegram is intermediated, it is possible to reliably perform synchronized light emission of multiple light alarm devices And

  Further, by providing the optical alarm device with a relay function, it is not necessary to provide a dedicated relay device, and the system configuration can be simplified and the cost can be reduced.

(Effects of calculating relay time)
In addition, when the light alarm device under light emission control that has received the relay instruction message ends transmission of the relay control message within the first light emission cycle in which the relay instruction message has been transmitted, the message is transmitted from the relay light emission waiting time information (Tr0). The relay emission waiting time information (Tri = Tr0−ΔTi) corrected by subtracting the time required for each relay (ΔTi) is calculated and included in the relay control message, and transmission of the relay control message is completed within the second and subsequent light emission cycles. When waiting for relay light-emission, the time required for relaying (ΔTi) for each message is subtracted from the time obtained by adding one or more light-emission periods corresponding to the order of the light-emission periods to which the transmission end timing belongs to the light-emission waiting time information. Since the time information (Tri = (Tr0 + n · Tf) −ΔTi) is calculated and included in the relay control message, the schedule management prior to transmission of the relay instruction message allows Synchronized light emission at the relay destination is obtained by obtaining the relay light emission wait time information (Tri) corrected from the light emission wait time information (Tr0) and the required relay time (ΔTi) and transmitting it in the relay control message with different transmission timing. Make sure it is possible.

(Effect of control message relay 2)
In addition, the light alarm control device transmits the relay instruction message including the transmission waiting time information (Ta) from the start of the light emission cycle to the start of message transmission when the control message is received, and the light that has received the relay instruction message. The alarm device repeats relay transmission of the relay control message including the light emission waiting time information (Ts) based on the transmission waiting time information (Ta) a plurality of times. The light emission waiting time information (Ts) included in the relay control message is used to control the start of light emission of the light emitting unit so that light emission is repeated every light emission cycle. In this case, relay control that repeatedly transmits a plurality of times within the light emission cycle The light emission waiting time information included in the message becomes the same value in each light emission cycle, and it is not necessary to correct the light emission waiting time information for each relay control message, and it is possible to easily perform synchronous light emission by relay control. To.

(Continuous transmission of relay control messages)
Upon receiving the relay instruction message, the light alarm device under light emission control sets a predetermined transmission cycle consisting of a predetermined transmission time (T1) and a transmission pause time (T2) a plurality of times, and transmits each transmission time (T1). Since relay transmission of the relay control message is repeated a plurality of times, relay transmission can also be intermittently received by carrier sense by continuously transmitting the relay control message during a plurality of transmission times with a transmission pause time in between. It is possible to perform the optical alarm control by reliably receiving the relay control message with the relayed optical alarm device.

The block diagram which showed embodiment of the warning system which performs optical warning control by radio | wireless communication of a control message | telegram Block diagram showing the functional configuration of the light alarm control device Block diagram showing the functional configuration of the light alarm device Circuit diagram showing control message format Time chart showing light emission control by transmission of control message Time chart showing light emission control when relay control is performed by transmitting a relay instruction message following FIG. Time chart showing another embodiment of light emission control by transmission and relay of control message Flow chart showing control operation of light alarm control device Flow chart showing control operation of light alarm device

[Alarm system]
(Alarm system configuration)
FIG. 1 is a block diagram showing an embodiment of a warning system that performs light warning control by wireless communication of a control message.

  As shown in FIG. 1, the alarm system of the present embodiment is an example of a P-type automatic fire alarm system, and a plurality of sensor lines 12 serving as power supply signal lines are provided from the fire receiver 10 toward a warning area. A plurality of fire detectors 14 are connected by pulling out the line, and a termination device (termination resistor) 16 is connected to the end of the line.

  The fire receiver 10 includes a reception control unit 20, and a line reception unit 22, a display unit 24, an operation unit 25, an alarm unit 26, and a transfer unit 28 are provided for the reception control unit 20.

  The reception control unit 20 is a function realized by executing a program, for example, and uses, as hardware, a computer circuit having a CPU, a memory, various input / output ports, and the like.

  The line receiver 22 supplies a predetermined DC voltage VL, for example, VL = DC 24 volts, as a power supply voltage to the fire detector 14 from a power source built in the fire receiver 10. Further, the line detection unit 22 detects the alarm current flowing through the sensor line 12 when the fire detector 14 detects a fire, and outputs a line current detection signal to the reception control unit 20, and the reception control unit 20 receives the line reception unit 22. The fire alarm is determined by detecting that the line current detection signal from the terminal becomes equal to or higher than a predetermined fire alarm level.

  In addition, a predetermined line monitoring current determined by the terminating device 16 flows in the sensor line 12 in the normal monitoring state (non-reporting state). When the sensor line 12 is disconnected, the line monitoring current does not flow, and the reception control unit 20 detects a disconnection failure by detecting that the line current detection signal from the line receiver 22 has dropped below a predetermined value.

  The display unit 24 is provided with a fire representative lamp, a district display lamp, and other various display lamps and a liquid crystal display necessary for fire monitoring. The operation unit 25 is provided with various switches necessary for fire monitoring, such as a main sound stop switch, a district sound stop switch, and a transfer stop switch. The alarm unit 26 includes a buzzer and a speaker, and outputs an acoustic alarm and a message alarm. The transfer unit 28 outputs a fire transfer signal to other devices.

(Light alarm control function)
The configuration and function of such an automatic fire alarm system are the same as those of the conventional system. In addition, in this embodiment, the light alarm control device 30 is arranged outside the fire receiver 10 and moved. A report signal line is connected from the report unit 28, and wireless light alarm devices 32-1 to 32-3 are arranged in a warning area. In the following description, when there is no need to distinguish between the light alarm devices 32-1 to 32-3, the light alarm device 32 may be referred to.

  When the light alarm control device 30 receives a fire report signal from the message transfer unit 28 of the fire receiver 10, the light alarm control device 30 generates a control message for instructing the light alarm control and wirelessly transmits it to the light alarm devices 32-1 to 32-3. Then, light alarm control is performed. The transmission of the control message by the light alarm control device 30 corresponds to the intermittent reception of the light alarm devices 32-1 to 32-3, and a transmission cycle T0 composed of a predetermined transmission time T1 and a transmission pause time T2 is set to a plurality of times, for example 3 The control message is continuously transmitted a plurality of times during each transmission time T1.

  The light alarm devices 32-1 to 32-3 receive the control telegram transmitted from the light alarm control device 30, and have predetermined light intensity corresponding to the installation location by light emission control of the light emitting unit using a high-intensity LED, a flashlight or the like. Flashes white light or red light with a light alarm to notify the occurrence of a fire with the flashing light.

  The blinking frequency of the light alarm by the light alarm device 32 is 0.5 Hz or more and 2 Hz or less, that is, the light emission period Tf is 0.5 or more and 2.0 seconds or less, and the light emission pulse width exceeds 0.2 seconds (200 ms). I am trying not to.

  Further, the optical alarm device 32 performs intermittent reception for performing carrier sense at every predetermined intermittent reception cycle. When the transmission radio wave from the optical alarm control device 30 is detected by carrier sense, the optical alarm device 32 is switched to continuous reception. The control message transmitted from 30 is received, the light emission control of the light emitting unit is started based on the content of the received control message, and the light alarm is notified by repeating the light emission control at a predetermined light emission period Tf.

  Moreover, ID used as specific identification information is previously allocated to the light warning control device 30 and the light warning devices 32-1 to 32-3.

(Configuration of light alarm control device)
FIG. 2 is a block diagram showing a functional configuration of the light alarm control device provided in FIG. As shown in FIG. 2, the light alarm control device 30 includes a control unit 34, a transmission input unit 36 to which a transmission signal line is connected and a communication unit 38 to which an antenna 40 is connected, and a power source from the fire receiver 10. Or it operates with a dedicated power supply.

  The control unit 34 is a function realized by, for example, execution of a program, and uses, as hardware, a computer circuit having a CPU, a memory, various input / output ports, and the like. The transfer input unit 36 is a fire transfer output from the transfer unit 28 when the reception control unit 20 of the fire receiver 10 shown in FIG. 1 detects a fire alarm of the fire detector 14 and issues a fire alarm. An input of an information signal is detected, and a fire signal is output to the control unit 34.

  The communication unit 38 transmits and receives messages to and from the light alarm device 32 installed in the alert area. For example, in the case of Japan, the communication unit 38 performs wireless communication according to the standard of a specific low-power wireless station in the 400 MHz band, and has 48 channels having a band of 12.5 KHz from 426.2500 MHz to 426.8375 MHz. Either of the above can be used.

  Prior to the start of operation of the alarm system, the controller 34 registers ID1 to ID3 in advance as identification information of the optical alarm devices 32-1 to 32-3 that are communication destinations in its own memory.

  Moreover, the control part 34 performs control which produces | generates the control message | telegram for performing light control, and instruct | indicates and transmits to the communication part 38, when the input of the fire signal from the transfer input part 36 is detected.

  Here, the control message transmitted from the light warning control device has a signal format shown in FIG. 3, for example. As shown in FIG. 3, the control message includes a start code, a transmission source ID, a communication control code, control contents, light control time information, and a checksum. Further, the size of the control message is about 100 bits.

  Further, when detecting a fire signal, the control unit 34 sets a transmission cycle T0 including a predetermined transmission time T1 and a transmission suspension time T2 a plurality of times, for example, three times, and transmits a control message during each transmission time T1. Is repeated a plurality of times, for example, transmission of four control messages D1 to D4, D5 to D8, and D9 to D12 in three times, and the light emission period when the control alarm messages D1 to D12 are received on the light alarm device 32 side A predetermined position of the message in Tf, for example, the light emission waiting time information Ts1 to Ts12 from the end of the message reception to the light emission start is set in the light control time information of each control message D1 to D12, and the light alarm device is transmitted. In 32, light emission of the light emitting unit is started by any one of the light emission waiting time information Ts1 to Ts12 included in the received control message, and light emission with the light emission period Tf is repeated. Hereinafter, when it is not necessary to distinguish the light emission waiting time information Ts1 to Ts12, the light emission waiting time information Ts or Tsi may be used. Here, i is an integer of i = 1, 2, 3,... N indicating the order or number of messages.

  In addition, when the control unit 34 determines that the confirmation response message ACK is not received from all the transmission destinations for the transmission of the control message by comparing the registration ID and the transmission source ID of the confirmation response message, the control unit 34 performs the relay transmission. The relay instruction message R to be instructed is generated and transmitted, and the light alarm device 32 that has received the light is controlled to generate a relay control message and relay it.

  In addition, the control unit 34 instructs the communication unit 38 to transmit a periodic notification message every predetermined periodic notification time, and determines that it is normal when receiving an acknowledgment response message ACK from all the light alarm devices 32, When there is a light alarm device 32 that cannot obtain the confirmation response message ACK, control is performed to output a failure alarm. In addition, when there is the optical warning device 32 in which the confirmation response message ACK cannot be obtained for the periodic notification message, the control unit 34 performs control to transmit the periodic instruction relay instruction message instructing the relay transmission, and includes the relay transmission. By transmitting the periodic notification message, it is possible to receive confirmation response messages ACK from all the light alarm devices 32.

  Such a control function of the light alarm control device 30 will be clarified in the following description with reference to FIGS. 5 and 6.

(Configuration of light alarm device)
FIG. 4 is a block diagram showing a functional configuration of the light alarm device provided in FIG. As shown in FIG. 4, the light alarm device 32 includes a control unit 42, a communication unit 44 to which an antenna 46 is connected, and a light emitting unit 48, and operates with a battery power source (not shown).

  The control unit 42 is a function realized by, for example, execution of a program, and uses, as hardware, a computer circuit including a CPU, a memory, various input / output ports, and the like.

  The communication unit 44 transmits / receives a telegram to / from the light warning device 32 installed in the warning area, and controls other light warning devices installed in a place where the radio wave from the light warning control device 30 does not reach. Performs relay transmission of messages. In the case of Japan, the communication unit 44 performs wireless communication in accordance with the standard of a specific low power wireless station in the 400 MHz band, for example.

  The communication unit 44 performs intermittent reception in the normal monitoring state. The intermittent reception cycle by the communication unit 44 is set to a predetermined cycle that is shorter than the transmission time T1 by the communication unit 38 of the light alarm control device 30 in FIG. 2, and carrier sense is performed at each intermittent reception cycle. If possible, it is possible to receive a message from the light alarm control device 30 by switching to continuous reception.

  The light emitting unit 48 is provided with a high-intensity LED, a flashlight, and the like and its drive circuit. When receiving a light emission instruction from the control unit 42, for example, 100 mm at a predetermined light emission cycle Tf, for example, Tf = 2 seconds Repeats flashing for a flash time of seconds.

  When the control unit 42 detects the reception of the control message from the light alarm control device 30 via the communication unit 44, the control unit 42 acquires the light emission waiting time information Ts set as the light control time information in the control message, and the control message When the timer reaches the light emission waiting time information Ts, control is performed to instruct the light emitting unit 48 to perform light emission driving, and the light emitting unit 48 is repeatedly driven for light emission every light emission cycle Tf. An operation of notifying a light alarm by flashing light is performed.

  When the control unit 42 receives the control message and starts the light emission control, the control unit 42 controls the communication unit 44 to transmit the confirmation response message ACK. Here, the transmission timing of the confirmation response message ACK has a different delay time corresponding to the ID of the light alarm device 32 and the like, and collision of confirmation response messages ACK from a plurality of light alarm devices 32 can be avoided. .

  When the control unit 42 detects reception of the relay instruction message RC from the light alarm control device 30 via the communication unit 44 during the light emission control based on the reception of the control message, the control unit 42 instructs the transmission unit 44 to transmit. A transmission cycle T0 composed of time T1 and transmission suspension time T2 is set, for example, three times, and transmission of the relay control message R is repeated, for example, four times during each transmission time T1, and a light emission waiting time obtained from the relay instruction message RC The relay light-emission waiting time information Tri corrected by taking into account the relay required time ΔTi required for relaying for each telegram is included in the relay control telegram R to perform relay transmission, and the relay destination light alarm device 32 is controlled. Light emission is started based on the relay light emission waiting time information Tri included in the relay control message R that has been effectively received first by intermittent reception, and light emission at the light emission period Tf is repeated.

  Here, the relay required time ΔTi of the light alarm device 32 is the time from the end of reception of the relay instruction message RC from the light alarm control device 30 to a predetermined position of the relay control message R by the light alarm device 32, for example, the end of relay transmission. And a different time for each relay control message R.

  Moreover, the control part 42 performs control which transmits confirmation response message | telegram ACK, when reception of the regular alert message from the light warning control apparatus 30 is detected via the communication part 44. FIG. In addition, when the control unit 42 detects reception of the relay instruction message of the periodic notification from the light alarm control device 30 via the communication unit 44, the control unit 42 instructs the communication unit 44 to include the transmission time T1 and the transmission suspension time T2. When the transmission cycle T0 is set 3 times, for example, and the relay control message is transmitted 4 times for the periodic notification during each transmission time T1, for example, and the periodic response confirmation response message is received from the relay destination. Performs a relay transmission to the light alarm control device 30.

  The control functions of the light alarm control device 30 and the light alarm device 32 will be clarified in the following description with reference to FIGS. 5 and 6.

[Light alarm control by alarm system]
FIG. 5 is a time chart showing light emission control by transmission of a control message, FIG. 5 (A) shows a fire alarm, FIG. 5 (B) shows message transmission by a light alarm control device, and FIG. ) Shows light emission control of the light alarm device, and FIG. 5D partially shows relay control of the light alarm device. FIG. 6 is a time chart showing light emission control when relay control is performed by transmitting a relay instruction message following FIG. 5, FIG. 6 (A) shows a fire alarm, and FIG. ) Shows the message transmission by the light alarm control device, FIG. 6C shows the light emission control of the light alarm device, FIG. 6D shows the relay control of the light alarm device, and FIG. 6E shows the relay destination. The light emission control at is shown.

(Light alarm control by transmission of control message)
If a fire alarm is detected by the fire receiver 10 at time t1 in FIG. 5A and a fire alarm is output, a fire alarm signal from the alarm unit 28 is given to the light alarm controller 30; The control message transmission operation starts at time t2 in FIG.

  In the transmission operation of the light alarm control device 30, a transmission cycle T0 that is a combination of the transmission time T1 and the transmission suspension time T2 is set three times, and during each transmission time T1, control messages D1 to D4, D5 to D8, D9 to D12 are repeatedly transmitted.

  Taking the message transmission of the first transmission time T1 as an example, each of the control messages D1 to D4 includes the light emission waiting time information Ts1 to Ts4 as the light emission control time information. Taking the head control message D1 as an example, the light emission waiting time information Ts1 is the time from the transmission end time t3 of the control message D1 to the time t7 at which the light alarm device 32 of the transmission destination in FIG. It becomes. Similarly, the remaining control messages D2 to D4 include the light emission waiting time information Ts2 to Ts4, and the transmission time (T1 / 4) is shortened by one transmission time (T1 / 4) from the first light emission waiting time information Ts1. Become.

  Specifically, if the light emission waiting time information Ts1 from the end of transmission of the head control message D1 to the start of light emission is determined in advance, the remaining light emission waiting time information Ts2 to Ts4 is uniquely determined.

  The optical alarm device 32 that receives the control messages D1 to D4 performs carrier sense by intermittent reception. For example, which of the control messages D1 to D4 to be transmitted at the first transmission time T1 is received at the timing of carrier sense. Dependent. However, when any of the control messages D1 to D4 is received, the time when the light emission waiting time information Ts1 to Ts4 has elapsed since the end of each message reception is the same time t7, and the light emission control is started at time t7.

  In addition, the control messages D1 to D4 from the light alarm control device 30 are received by the light alarm devices 32-1 and 32-2 shown in FIG. 1, and even if the reception of the control messages D1 to D4 is different, The light emission timing is the same time t7, and therefore, synchronous light emission in which the flashing of light of the light alarm devices 32-1 and 32-2 matches can be performed.

  The same applies to the messages D5 to D8 and D9 to D12 transmitted at the second and third transmission times T1.

(Light alarm control by telegram relay)
When the transmission of the control messages D1 to D12 is completed three times in FIG. 5, the confirmation response message ACK is received from the light alarm device 32 from time t8. The ID of the light alarm device 32 obtained by receiving this confirmation response message ACK is collated with the ID of the transmission destination registered in advance, and it is confirmed that no confirmation response message ACK is obtained from all the light alarm devices 32. When it is determined, the relay instruction message RC is transmitted at time t9.

  For example, when the confirmation response message ACK of the light alarm devices 32-1 and 32-2 in FIG. 1 is obtained, but the confirmation response message ACK of the light alarm device 32-3 arranged at a remote location is not obtained. It is.

  In the relay instruction message RC transmitted from the light alarm control device 30, the relay light emission waiting time information Tr0 that is the time from the transmission end time t10 of the relay instruction message RC to the start time t13 of the next light emission cycle Tf that is currently under light emission control. Send including The subsequent operation will be described with reference to FIG.

  As shown in FIG. 6B, the relay instruction telegram RC that has started transmission at time t9 is currently being controlled by the light alarm devices 32-1 and 32-2 in FIG. The transmission of the relay control message R is started after a desired operation time necessary for the relay control from the reception end of the relay instruction message RC.

  As shown in FIG. 6D, the transmission of this relay control message is also performed by setting the transmission cycle T0, which is the sum of the transmission time T1 and the transmission suspension time T2, three times, and the relay control message R1 during each transmission time T1. To R4, R5 to R8, and R9 to R12 are repeatedly transmitted.

  The relay control telegrams R1 to R12 include relay light emission waiting time information Tr1 to Tr12 obtained by correcting the relay light emission waiting time information Tr0 obtained from the relay instruction message RC in consideration of the respective relay required times ΔT1 to ΔT12. Sending.

Here, for example, taking the first relay control message R1 as an example, the transmission required time ΔTi is the time from the reception end time t10 of the relay instruction message RC to the transmission end time t11 of the relay control message R1, and the relay control message R1. The relay light emission waiting time information Tr1, which is the time from the transmission end time t11 of R1 to the next light emission time t13 during the light emission control,
Tr1 = Tr0−ΔT1
It is obtained as

Similarly, the relay control message R2 before the next light emission time t13 is obtained as in the following equation.
Tr2 = Tr0−ΔT2
Since the end time t13 of the next relay control message R3 coincides with the light emission time, and the light emission control cannot be performed in this case, the relay light emission waiting time information Tr0 is shifted by the light emission period Tf to (Tr0 + Tf), and the relay is started. The relay light emission waiting time information Tr3 is obtained by the following equation by subtracting the required time ΔT3.
Tr3 = (Tr0 + Tf) −ΔT3 = Tf

In the same manner, when the relay light emission waiting time information Tr4 to Tr12 is obtained for the relay control messages R4 to R12 in the same manner, it is as follows.
Tr4 = (Tr0 + Tf) −ΔT4
Tr5 = (Tr0 + Tf) −ΔT5
Tr6 = (Tr0 + 2Tf) −ΔT6 = Tf
Tr7 = (Tr0 + 2Tf) −ΔT7
Tr8 = (Tr0 + 2Tf) −ΔT8
Tr9 = (Tr0 + 3Tf) −ΔT9 = Tf
Tr10 = (Tr0 + 3Tf) −ΔT10
Tr11 = (Tr0 + 3Tf) −ΔT11
Tr12 = (Tr0 + 3Tf) −ΔT12

  Since the light emission time is determined by the light emission period Tf of the light alarm device 32 under light emission control, such relay light emission waiting time information Tr1 to Tr12 is uniquely obtained and included in the relay control messages R1 to R12. Relay transmission is possible.

  The relay control messages R1 to R12 relayed and transmitted by the light alarm device 32-1 in FIG. 1 in this way are received by the light alarm device 32-3, for example, any reception of the first relay control messages R1 to R4. Even if there is, the light emission timing is the same time t17. Therefore, the synchronized light emission in which the flashing of the light of the light alarm devices 32-1 and 32-2 already under light emission control coincides is also performed at the relay destination light alarm device 32-3. be able to.

(Another embodiment of light alarm control by telegram relay)
FIG. 7 is a time chart showing another embodiment of light emission control by transmission of a control message, FIG. 7 (A) shows a fire alarm, and FIG. 7 (B) shows a message transmission by a light alarm control device. 7C shows light emission control of the light alarm device, FIG. 7D shows relay control of the light alarm device, and FIG. 7E shows light emission control of the relay destination. In this case, the message generation is simplified by making the light emission waiting time information included in the first control message the same as the light emission waiting time information included in the subsequent relay control message.

  The fire receiver 10 detects a fire alarm at time t1 in FIG. 7A, and starts a control message transmission operation from time t2 in FIG. 7B. The transmission operation in FIG. 7B is basically the same as that in FIG. 5B. A transmission cycle T0 composed of a transmission time T1 and a transmission pause time T2 is set three times, and control is performed during each transmission time T1. The messages D1 to D4 are repeatedly transmitted, and the light emission start timing is set in the light emission suspension time T2.

  Here, the relationship between the transmission cycle T0 and the light emission cycle Tf of the present embodiment is T0 = Tf, and may be T0 = n × Tf. However, n is an arbitrary integer.

  Further, in each of the control messages D1 to D4, as the light emission control time information, the time t7 at which light emission is started at the transmission destination light alarm device 32 in FIG. 7B from the transmission end times t3 to t6 of the control messages D1 to D4. The light emission waiting time information Ts1 to Ts4, which is the time until, is included.

  In addition, in this embodiment, the transmission start waiting time information Ta is obtained as the time from the first light emission time t7 to the transmission start time t8 of the first control message D1 of the next transmission time T1 belonging to the light emission cycle Tf. Yes.

  When reception of the confirmation response message ACK from time t9 is not obtained for all the optical alarm devices, the relay instruction message RC including the transmission start waiting time information Ta is transmitted at time t10.

  Upon receiving the relay instruction message RC, the light alarm device 32 under light emission control, as shown in FIG. 7C, relay control messages R1 to R4 from the time t12 when the transmission waiting time information Ta has elapsed from the next light emission time t11. Is transmitted in three times. The relay control messages R1 to R4 are transmitted including the same light emission waiting time information Ts1 to Ts4 as in the case of the control messages D1 to D4 transmitted from time t2.

  In FIG. 7D, for example, the relay control telegrams R1 to R4 relayed by the optical alarm device 32-1 of FIG. 1 are received by the relay destination optical alarm device 32-3, for example, the first relay control telegram R1 to R1. In any reception of R4, the light emission timing is the same time t17, and therefore, the synchronous light emission in which the flashing of the light of the light alarm devices 32-1 and 32-2 already performing light emission control coincides is relayed to the light alarm device. 32-3.

  Moreover, the light emission waiting time information Ts1 to Ts4 included in the relay control messages R1 to R4 is the same as the time included in the control messages D1 to D4 from the light alarm control device 30, and the relay control messages R1 to R1 illustrated in FIG. Compared with the relay light emission waiting time information Tr1 to Tr12 included in R12, the calculation is extremely simple, and there is an advantage that the generation of the relay control message is easy.

  Thus, in the embodiment of FIG. 7, the transmission waiting time information Ta is used by setting the relationship between the transmission cycle T0 and the light emission cycle Tf to a special condition of T0 = Tf and T0 = n × Tf. The communication of telegrams can be simplified.

(Control operation of light alarm control device)
FIG. 8 is a flowchart showing the control operation of the light alarm control device. As shown in FIG. 8, when the control unit 34 of the light alarm control device 30 in FIG. 2 detects the reception of the fire report signal from the fire receiver 10 in step S1, the process proceeds to step S2 and the light emission waiting time information Ts1. Control messages D1 to D4 including ~ T4 as light emission control time information are generated, and the control messages D1 to D4 are repeatedly transmitted, for example, divided into three transmission times T1.

  Then, it progresses to step S3, receives the confirmation response message | telegram ACK from the light alarm apparatus 32, and when not having received all the confirmation response message | telegram ACK, it progresses to step S5 and includes the relay light emission waiting time information Tr at that time A relay instruction message RC is transmitted.

(Control action of light alarm device)
FIG. 9 is a flowchart showing the control operation of the light alarm device. As shown in FIG. 9, when the control unit 42 provided in the light alarm device 32 detects the arrival of the intermittent reception period in step S <b> 11, the control unit 42 proceeds to step S <b> 12 to determine presence / absence of carrier sense, and to determine carrier sense In S13, the intermittent reception operation is switched to the continuous reception operation.

  Subsequently, when reception of a control message is detected in step S14, the process proceeds to step S15, and light emission control for repeating light emission based on the light emission period Tf is started based on the light emission waiting time information Ts included in the received control message.

  Subsequently, in step S16, an acknowledgment response message ACK is transmitted. Subsequently, when reception of a relay instruction message is detected in step S17, the flow proceeds to step S18, and the relay control message R including the relay light emission waiting time information Tr is based on the required relay time. In step S19, the relay control message R including the relay light emission waiting time information Tr is relayed and transmitted, and the light alarm device 32 at the relay destination flashes the light synchronized with the other light alarm devices 32, that is, the light by the synchronized light emission. Alarm notification.

[Modification of the present invention]
(Light emission waiting time information)
In the above embodiment, the light emission waiting time information Tsi is set to the real time (for example, milliseconds), but the number of bits at the bit rate (bps) used in the alarm system may be used as the light emission waiting time information.

  In addition, when n messages having a message length Td are continuously transmitted (n is an integer indicating n = 1, 2, 3,... Indicating the number of messages), the portion n indicating the number of messages is emitted. It is good also as waiting time information.

  In addition, when n messages having a message length Td are continuously transmitted and the time Td × (nm) from the end of the m-th message transmission currently being transmitted to the end of the message transmission, the message currently being transmitted is The portion m shown may be used as the light emission waiting time information.

  Alternatively, after the transmission of n messages, the light emission waiting time information such as light emission after a predetermined time Tsfix elapses may be used.

  Furthermore, the light emission waiting time information transmitted by a message and a value obtained by adding or subtracting a predetermined time Tsfix may be used as the light emission waiting time information. The same applies to the relay light emission waiting time information Tri.

(Fire receiver)
In the above embodiment, a P-type fire receiver that monitors a fire in units of sensor lines is taken as an example. However, an R-type that monitors a fire in units of addresses by connecting a fire detector with an address set to a transmission line. It may be a fire receiver.

(Other)
The present invention includes appropriate modifications without impairing the object and advantages thereof, and is not limited by the numerical values shown in the above embodiments.

10: Fire receiver 12: Sensor line 14: Fire detector 16: Termination device 20: Reception control unit 22: Line reception unit 24: Display unit 25: Operation unit 26: Alarm unit 28: Transfer unit 30: Light alarm Control device 32: Light alarm device 34, 42: Control unit 36: Transfer input unit 38, 44: Communication unit 48: Light emitting unit

Claims (8)

In an alarm system in which a fire detector is connected to a sensor line drawn from a receiver, a fire alarm of the fire detector is detected by the receiver, a fire alarm is output and a fire alarm signal is output. And
When a fire signal is input from the receiver, a control telegram for instructing light control is transmitted, and light is emitted from a predetermined position of the telegram within a predetermined light emission period (Tf) when the control telegram is received. A light warning control device for transmitting the light emission waiting time information (Ts) until the start including the control telegram,
A light alarm device that starts light emission of the light emitting unit based on the light emission waiting time information (Ts) included in the control message first received by intermittent reception and repeats light emission according to the light emission period (Tf);
An alarm system characterized by providing.
The alarm system according to claim 1, wherein
When the fire alarm signal is input from the receiver, the light alarm control device sets a predetermined transmission cycle including a predetermined transmission time (T1) and a transmission suspension time (T2) a plurality of times, and transmits each of the transmissions. An alarm system characterized by repeating transmission of a control message a plurality of times during a time (T1).
The alarm system according to claim 1, wherein
The light warning control device registers identification information of all the light warning devices that are transmission destinations, and relays transmission when an acknowledgment message is not received from all transmission destinations by transmitting the control message. Send a relay instruction message to instruct,
The light alarm device generates and relays a relay control message when the relay instruction message is received from the light alarm control device during light emission control.
In the alarm system according to claim 3,
The light warning control device transmits the relay instruction message including relay light emission waiting time information (Tr0) from the end of reception to the start of the next light emission when the relay instruction message is received,
The light alarm device under light emission control that has received the relay instruction message corrects the relay light emission waiting time corrected by taking into account the relay required time (ΔTi) for each message required for relaying the message, based on the relay light emission waiting time information (Tr0). Information (Tri) is included in the relay control message and relayed,
The light warning device at the relay destination starts light emission of the light emitting unit based on the corrected relay light emission waiting time information (Tri) included in the relay control message first received by intermittent reception, and emits light according to the light emission period (Tf). An alarm system characterized by repeating.
5. The alarm system according to claim 4, wherein the relay required time (ΔTi) is from the end of reception of the relay instruction message from the light alarm control device to the end of relay transmission of the relay control message by the light alarm device. Alarm system characterized by time.
5. The alarm system according to claim 4, wherein the light alarm device in the light emission control that receives the relay instruction message is:
When the transmission of the relay control message ends within the first light emission cycle in which the relay instruction message is transmitted, the relay light emission waiting is corrected by subtracting the required relay time (ΔTi) from the relay light emission waiting time information (Tr0). Time information (Tri = Tr0−ΔTi) is calculated and included in the relay control message,
When the transmission of the relay control message is finished within the second and subsequent light emission cycles, one or a plurality of light emission cycles (in accordance with the order of the light emission cycles to which the transmission end timings belong (to the light emission waiting time information (Tr0)) ( The relay emission waiting time information (Tri = (Tr0 + n · Tf) −ΔTi) corrected by subtracting the required relay time (ΔTi) from the time obtained by adding (Tf) is calculated and included in the relay control message. Alarm system.
In the alarm system according to claim 4,
The light alarm control device transmits to the relay instruction message including transmission waiting time information (Ta) from the start of the light emission cycle when the control message is received to the start of message transmission,
The light warning device that has received the relay instruction message relays and transmits the relay control message including the light emission waiting time information (Ts),
The relay-destination light alarm device controls light emission start of the light-emitting unit based on the light-emission waiting time information (Ts) included in the relay control message first received by intermittent reception, and repeats light emission every light-emission cycle. An alarm system featuring.
In the alarm system according to claim 4 or 7,
The light alarm device under light emission control that has received the relay instruction message sets a predetermined transmission cycle including a predetermined transmission time (T1) and a transmission suspension time (T2) a plurality of times, and sets the transmission time (T1). An alarm system characterized by repeating relay transmission of the relay control message a plurality of times in the meantime.

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