JP2019075167A - Alarm system - Google Patents

Abstract

To provide an alarm system by which synchronous light emission is possible by making light emission timings of a plurality of optical alarms coincident for the case of intermittently receiving control telegrams to be continuously transmitted from an optical alarm controller by the plurality of optical alarms and the case of relaying the control telegrams by the optical controllers.SOLUTION: An optical alarm controller 30 continuously transmits a control telegram including light emission latency information from completion of telegram reception to the start of light emission in a light emission period for multiple times during transmission time divided into three when a fire is detected by a fire receiver 10. Optical alarms 32-1 to 32-3 start light emission of light emission parts by the light emission latency information included in the control telegram received first by intermittent reception to repeat synchronous light emission of the optical alarms. The optical alarm controller performs the synchronous light emission including the optical alarm 32-3 at a relay destination by transmitting relay instruction telegrams to the optical alarms 32-1, 32-2 under light emission control, and generating a control telegram for relay to perform relay transmission when confirmation response telegrams of the optical alarms are not received.SELECTED DRAWING: Figure 1

Description

  The present invention is an alarm system that when a receiver receives a fire alert of a fire detector, the receiver transmits a control message wirelessly to a light alarm device in a caution area and reports an occurrence of a fire by blinking light. About.

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

  By the way, in recent years, an alarm system is also proposed that reports the occurrence of a fire by flashing a high-brightness white light (flash light) having high visibility with sound as well as sound as well as sound (for example, see Patent Documents 1 to 3). . According to such an alarm system, the occurrence of a fire can be notified not only by sound but also by flickering of strong light, so that, for example, even a hearing impaired person can recognize the occurrence of a disaster early and surely.

  In addition, a wireless alarm system has also been proposed in order to reduce labor and cost due to wiring (see, for example, Patent Document 4). The wireless alarm system outputs a fire signal to the repeater via the electric path when the fire alarm of the fire detector is received by the fire receiver, and the alarm command signal (control message) is lighted from the repeater. The light alarm device transmits light to the 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 the light alarm device installed at a place where radio waves do not reach, a radio relay is provided on the way to relay an alarm command signal.

  When receiving the alarm command signal from the relay connected to the fire receiver, the radio wave relay relays and transmits the alarm command signal after the period T has passed, and the light alarm device at the relay destination is predetermined from the reception of the alarm command signal When the delay time Δt has elapsed, the light emitting unit is driven to emit light, and thereafter, light emission is repeated in a cycle 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, synchronous light emission is performed with a cycle T, and photosensitivity due to light emission at disjointed timings Make it possible to eliminate the seizure problem.

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

  By the way, in the wireless alarm system that performs the light alarm, the radio wave environment of the monitored area to be monitored is various, and the radio wave environment may change depending on the time zone of the day, the season, and the like. For this reason, when wirelessly transmitting a control message from the light alarm control device on the receiver side, the same control message is continuously sent a plurality of times. Also, since the wireless light alarm device is battery-powered, intermittent reception is performed to ensure a sufficient battery life.

  As described above, when the optical communication control device continuously transmits the message a plurality of times, and the light alarm device intermittently receives the light control message and controls the light emission, among the control messages continuously transmitted from the light alarm control device Which control message is to be effectively received is determined by the timing of the carrier sense performed at each intermittent reception cycle performed by the light alarm device asynchronously, and the reception of the alarm command signal at each cycle T as in the prior art is predetermined. Even if the light emission control of the light emitting unit is performed after the delay time Δt, the light emission timing of the light alarm device is disjointed, and there is a problem that light emission synchronization can not be taken to match the light emission timing.

  In addition, for the light alarm device installed at a distant position where radio waves from the light alarm control device on the receiver side do not reach, the light alarm device installed between them is provided with a radio relay function, and the light alarm control device In this case, the control telegrams among the control telegrams that are continuously relayed and transmitted are also intermittently transmitted by the light alarm device at the relay destination asynchronously. It is determined by the timing of carrier sensing performed in each reception cycle, and the light emission timing of the light alarm device is disjointed, and similarly, there is a problem that light emission synchronization can not be taken to match the light emission timing.

  The present invention matches the light emission timings of the plurality of light alarm devices and synchronizes the light emission when the control telegram continuously transmitted from the light alarm control device is intermittently received by the plurality of light alarm devices and when relayed by the light alarm devices. It aims to provide a wireless alarm system that enables it.

(Alarm system)
The present invention relates to an alarm system for detecting a fire and performing a light alarm,
When a fire is detected, a control message for instructing light control is transmitted, and light emission waiting time information from the predetermined position of the message in the predetermined light emission cycle (Tf) when the control message is received to the start of light emission ( A light alarm control device that transmits Ts) a plurality of times with the control message included;
A light alarm device which starts light emission of a light emitting unit according to light emission waiting time information (Ts) included in a control message received first by intermittent reception, and repeats light emission according to a light emission cycle (Tf);
Is provided.

(Repeated transmission of control message and transmission pause)
When a light is detected, the light alarm control device sets a predetermined transmission cycle consisting of a predetermined transmission time (T1) and a transmission pause time (T2) a plurality of times to control message during each transmission time (T1). Repeat sending multiple times.

(Relay transmission)
The light alarm controller registers identification information of all the light alarm devices to be transmission destinations, transmits a control message, and instructs relay transmission when acknowledgment telegrams are not received from all the transmission destinations. Send an instruction message,
When the light alarm device receives a relay instruction message from the light alarm controller 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 light emission waiting time information (Tr0) from the end of reception to the start of the next light emission in the case of receiving the light relay instruction message in the light relay instruction message, and transmits it.
The light alarm device during light emission control that has received the relay instruction message corrects the relay light emission waiting time information (Tr0) by taking into consideration the relay required time (ΔTi) for each message required for relaying the message ( Relay transmission by including Tri) in the relay control message,
The light alarm device at the relay destination starts light emission of the light emitting unit according to the corrected relay light emission waiting time information (Tri) included in the relay control message received first by intermittent reception, and repeats light emission with the light emission cycle (Tf).

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

(Light emission waiting time information)
The light alarm device under emission control that has received the relay instruction message,
When the transmission of the relay control message is ended within the first light emission cycle of transmitting the relay instruction message, 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,
When the transmission of the relay control message is ended within the second or subsequent light emission cycle, one or more light emission cycles (Tf) according to the order of the light emission cycle to which the transmission end timing belongs to 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 when the control message is received to the start of the message transmission,
The light alarm device having received the relay instruction message relays and transmits the relay control message including the light emission waiting time information (Ts),
The light alarm device at the relay destination controls the light emission start of the light emitting unit according to the light emission waiting time information (Ts) included in the relay control message received first by intermittent reception, and repeats the light emission for each light emission cycle.

(Continuous transmission of relay control message)
The light alarm device under emission control that has received the relay instruction message sets a predetermined transmission cycle consisting of a predetermined transmission time (T1) and a transmission pause time (T2) a plurality of times, and between each transmission time (T1) Repeat relay transmission of relay control message several times.

(Basic effect of alarm system)
The present invention is an alarm system that detects a fire and performs a light alarm, transmits a control telegram instructing light control when a fire is detected, and a predetermined light emission cycle when a control telegram is received ( Tf) A light alarm control device that transmits light emission waiting time information (Ts) from the predetermined position of the message in the message to the start of light emission multiple times including the light emission wait time information (Ts) in the control message Since the light alarm unit that starts the light emission of the light emitting unit according to the waiting time information (Ts) and repeats the light emission with the light emission cycle (Tf) is provided, a plurality of control telegrams repeatedly transmitted from the optical communication control device Even if the light alarm device receives different timings according to each intermittent reception, the light emission waiting time information included in the reception telegram passes from the predetermined position of the control By repeating the light emission of the light emitting unit according to the light emission cycle at the same time, it is possible to make the light emission start timings of the plurality of light alarm devices coincide and reliably perform synchronous light emission in which the blinking of the plurality of light alarm devices coincide. Do.

(Effect of repeating transmission of control message and transmission pause)
In addition, when the light alarm control device detects a fire, the light alarm control device sets a predetermined transmission cycle consisting of a predetermined transmission time (T1) and a transmission pause time (T2) a plurality of times, and between each transmission time (T1) Since the transmission of the control message is repeated a plurality of times, the light alarm device is performing intermittent reception by carrier sense by continuously transmitting the control message for a plurality of transmission times across the transmission pause time, It is possible to reliably receive a control message and perform light alarm control.

(Effect by relay transmission)
In addition, the light alarm control device registers identification information of all the light alarm devices to be transmission destinations, transmits a control message, and instructs relay transmission when acknowledgment telegrams are not received from all the transmission destinations. The relay alarm message is transmitted, and the light alarm device generates the relay control message and relays transmission when it receives the relay alarm message from the light alarm control device during light emission control. When a control telegram is received by the light alarm device of, the relay zone is not instructed, and by instructing the relay only when there is a light alarm device that has not received the control telegram, The relay corresponding to the radio wave environment to the installed light alarm device is enabled, and the unnecessary relay operation can be suppressed.

(Effect by control message relay 1)
In addition, the light alarm control device transmits the relay instruction telegram including the relay light emission waiting time information (Tr0) from the reception end when the relay instruction telegram is received to the start of the next light emission in the relay instruction telegram, and receives the relay instruction telegram 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 for relaying the message. The relay light emission waiting time information (Tri) is included in the relay control message, relayed and transmitted, and the light alarm device at the relay destination corrects the relay light emission wait time information (Tri Starts the light emission of the light emitting unit and repeats the light emission according to the light emission cycle (Tf), and the required relay time (ΔTi) is from the end of the reception of the relay instruction message from the light alarm control device Since the time to the end of relay transmission of the relay control message is set, the light alarm control device transmits the relay instruction message once if the acknowledgment message is not received from all the transmission destinations, thereby intermittently receiving Based on the reception of the relay instruction message, the light alarm device under emission control performing continuous reception by receiving the control message by the relay performs relay control to repeatedly transmit a plurality of relay control messages, and the relay required included in each relay message By including relay light emission waiting time information corrected with time taken into consideration, even if one or more light alarm devices at relay destinations receive relay control telegrams at different timings according to each intermittent reception, By repeating the light emission of the light emitting unit according to the light emission cycle when the corrected waiting time information included in the received message has passed since the end of reception, the light emission start tie of the light alarm device at the relay destination Can be matched simultaneously with the blinking of the light alarm device of the relay source already in the light emission control, and it is possible to reliably perform the synchronized light emission of a plurality of light alarm devices even when the control message is measured I assume.

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

(Effect by calculation of required relay time)
If the light alarm device under emission control that has received the relay instruction message ends transmission of the relay control message within the first emission cycle of transmitting the relay instruction message, the optical message from the relay emission waiting time information (Tr0) The relay emission waiting time information (Tri = Tr0-ΔTi) corrected by subtracting the required relay time (ΔTi) for each is calculated and included in the relay control message, and transmission of the relay control message ends within the second and subsequent light emission cycles In this case, the relay light emission is corrected by subtracting the relay required time (ΔTi) for each message from the time obtained by adding one or more light emission cycles according to the order of the light emission cycle to which the transmission end timing belongs to the relay light emission waiting time information. Since the waiting time information (Tri = (Tr0 + n · Tf) −ΔTi) is calculated and included in the relay control message, schedule management prior to transmission of the relay instruction message is performed. Synchronous emission at the relay destination is obtained by determining relay emission wait time information (Tri) corrected from the relay emission wait time information (Tr0) and the required relay time (ΔTi) and including it in the relay control message with different transmission timing. Ensure that

(Effect of control message relay 2)
In addition, the light alarm control device transmits the relay instruction telegram including the transmission waiting time information (Ta) from the start of the light emission cycle when the control telegram is received to the start of the telegraphic transmission in the relay instruction telegram. The alarm device repeats relay transmission of the relay control message including the light emission waiting time information (Ts) multiple times based on the transmission waiting time information (Ta), and the light alarm device at the relay destination first receives effective reception by intermittent reception. Since the start of light emission of the light emitting unit is controlled by the light emission waiting time information (Ts) included in the relay control message to repeat light emission for each light emission cycle, in this case, relay control for repeatedly transmitting a plurality of times within the light emission cycle Since the light emission waiting time information included in the message has the same value in each light emission cycle, 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 message)
The light alarm device under emission control that has received the relay instruction message sets a predetermined transmission cycle consisting of a predetermined transmission time (T1) and a transmission pause time (T2) a plurality of times, and between each transmission time (T1) Since the relay transmission of the relay control message is repeated a plurality of times, also for the relay transmission, the intermittent reception can be performed by the carrier sense by continuously transmitting the relay control message during a plurality of transmission times with the transmission pause time interposed. The light alarm device at the relay destination which is performing enables light alarm control to be performed by reliably receiving the relay control message.

Block diagram showing an embodiment of a warning system for performing light alarm control by wireless communication of control message 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 the format of control message A time chart showing light emission control by transmission of control message A time chart showing light emission control when relay control message is sent following relay instruction message following FIG. 5 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 the light alarm device

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

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

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

  The reception control unit 20 is a function realized by execution of a program, for example, and uses, as hardware, a computer circuit provided with 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 supply built in the fire receiver 10. Further, the line detection unit 22 detects an alarm current flowing to the sensor line 12 by the fire detection of the fire detector 14 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. A fire alarm is judged by detecting that the line current detection signal from the circuit is higher than a predetermined fire alarm level.

  In addition, a predetermined line monitoring current determined by the termination device 16 flows in the sensor line 12 in the normal monitoring state (non-reporting state), and when the sensor line 12 is disconnected, the line monitoring current no longer flows. A line 20 detects that the line current detection signal from the line receiving unit 22 has fallen to a predetermined value or less to determine a disconnection fault.

  The display unit 24 is provided with a fire representative light, a district indicator light, various other indicator lights necessary for fire monitoring, a liquid crystal display, and the like. 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 an alarm stop switch. The alarm unit 26 includes a buzzer and a speaker, and outputs an acoustic alarm and a message alarm. The notification unit 28 outputs a fire notification signal to another device.

(Light alarm control function)
The configuration and function of such an automatic fire alarm system are the same as the conventional system, but in addition to this, in the present embodiment, the light alarm control device 30 is disposed outside the fire receiver 10 to A movement report signal line is connected from the information unit 28, and wireless light alarm devices 32-1 to 32-3 are disposed in the alert area. In the following description, the light alarm devices 32-1 to 32-3 may be referred to as the light alarm device 32 when it is not necessary to distinguish them.

  When the light alarm controller 30 receives a fire alarm signal from the alarm unit 28 of the fire receiver 10, the light alarm controller 30 generates a control message for instructing light alarm control and wirelessly transmits the control message to the light alarm devices 32-1 to 32-3. And perform light alarm control. 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 plurality of transmission cycles T0 consisting of a predetermined transmission time T1 and a transmission pause time T2, for example, 3 Repeatedly, the control message is transmitted continuously several times during each transmission time T1.

  The light alarm devices 32-1 to 32-3 receive the control message transmitted from the light alarm control device 30, and the predetermined luminous intensity corresponding to the installation place by the light emission control of the light emitting unit using the high brightness LED or the flash light. Blinking white light or red light, and a light alarm to notify the occurrence of fire by the blinking light.

  The flashing 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 cycle 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 try not to.

  Further, the light alarm device 32 performs intermittent reception which performs carrier sense at every predetermined intermittent reception cycle, and switches to continuous reception when the transmission radio wave from the light alarm control device 30 is detected by the carrier sense, and the light alarm control device Based on the content of the received control message, the light emission control of the light emitting unit is started, the light emission control is repeated at a predetermined light emission cycle Tf, and the light alarm is notified.

  Further, an ID as unique identification information is assigned to the light alarm control device 30 and the light alarm devices 32-1 to 32-3 in advance.

(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 mobile notification input unit 36 to which mobile communication signal lines are input connected, and a communication unit 38 to which an antenna 40 is connected. Or operate with a dedicated power supply.

  The control unit 34 is a function realized by execution of a program, for example, and uses, as hardware, a computer circuit provided with a CPU, a memory, various input / output ports and the like. When the reception control unit 20 of the fire receiver 10 shown in FIG. 1 detects a fire alert of the fire detector 14 and issues a fire alarm as shown in FIG. It detects an input of an information signal and outputs a fire signal to the control unit 34.

  The communication unit 38 transmits and receives telegraphic messages to and from the light alarm device 32 installed in the alert area. In the case of Japan, the communication unit 38 performs wireless communication according to the standard of the specified low power radio station of, for example, 400 MHz band, and has 48 channels with a 12.5 KHz band of 426.2500 MHz to 426.8375 MHz. Enable the use of either.

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

  Further, when the control unit 34 detects an input of a fire signal from the movement report input unit 36, the control unit 34 generates a control message for performing light control, and instructs the communication unit 38 to perform transmission.

  Here, the control message transmitted from the light alarm control device has, for example, a signal format shown in FIG. 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. Also, the size of the control message is about 100 bits.

  Further, when a fire signal is detected, the control unit 34 sets a transmission cycle T0 consisting of a predetermined transmission time T1 and a transmission pause time T2 a plurality of times, for example, three times, and transmits the control message during each transmission time T1. While repeating transmission of four control telegrams D1 to D4, D5 to D8, D9 to D12 a plurality of times, for example, three times and also receiving control telegrams D1 to D12 at the light alarm device 32 side A light alarm device performs control to set a predetermined position of a message in Tf, for example, light emission waiting time information Ts1 to Ts12 from the end of message reception to light emission start in light control time information of each control message D1 to D12, In 32, the light emission of the light emitting unit is started by any of the light emission waiting time information Ts1 to Ts12 included in the received control message, and the light emission with the light emission cycle 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 telegrams.

  In addition, when it is determined that the acknowledgment telegram ACK is not received from all the transmission destinations for the transmission of the control telegram by comparison of the registration ID and the transmission source ID of the acknowledgment telegram, the control unit 34 performs relay transmission. Control is performed to generate and transmit a relay instruction telegram R to be instructed, and the light alarm device 32 under light emission control which has received the relay instruction telegram R generates a relay control telegram and relays it.

  Further, the control unit 34 instructs the communication unit 38 to transmit a periodic notification telegram every predetermined periodical notification time, and determines that it is normal when the acknowledgment response telegram ACK corresponding thereto is received from all the light alarm devices 32, If there is a light alarm device 32 that can not obtain the confirmation response message ACK, control is performed to output a fault alarm. When there is a light alarm device 32 for which a confirmation response message ACK can not be obtained for the regular notification message, the control unit 34 performs control to transmit a relay instruction message of the regular notification instructing relay transmission, and includes relay transmission. The transmission of the periodic notification telegram enables the reception of the acknowledgment telegram ACK from all the light alarm devices 32.

  The control function of such a 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 the antenna 46 is connected, and a light emitting unit 48, and operates with a battery power supply (not shown).

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

  The communication unit 44 transmits and receives telegraphic messages with the light alarm device 32 installed in the caution area, and controls other light alarm devices installed in a place where the radio wave from the light alarm control device 30 can not reach Relay transmission of telegrams. In the case of Japan, the communication unit 44 performs wireless communication in accordance with the standard of the specified low power wireless station of, for example, the 400 MHz band.

  Also, the communication unit 44 performs intermittent reception in the normal monitoring state. The cycle of intermittent reception by the communication unit 44 is set to a predetermined cycle which is shorter than the transmission time T1 by the communication unit 38 of the light alarm control device 30 of FIG. 2 and carrier sensing is performed every intermittent reception cycle to perform carrier sensing. If it is possible to switch to continuous reception, it becomes possible to receive a telegram from the light alarm control device 30.

  The light emitting unit 48 is provided with a high brightness LED, a flash light, and the like and a drive circuit thereof. When a light emission instruction is received from the control unit 42, a preset light emitting cycle Tf, for example, 100 mm in a cycle of Tf = 2 seconds, for example. Repeatedly blinks for a light emission 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 At the end of reception of the timer, the timer is activated, and when the timer time reaches the light emission waiting time information Ts, control is performed to instruct the light emission unit 48 to emit light and repeat the light emission drive to the light emission unit 48 The operation of notifying a light alarm is performed by the blinking of the light.

  Further, when the control unit 42 receives the control message and starts the light emission control, the control unit 42 instructs the communication unit 44 to transmit a confirmation response message ACK. Here, the transmission timing of the acknowledgment response message ACK determines different delay times corresponding to the ID of the light alarm device 32 and the like, so that collision of the acknowledgment response messages ACK from the plurality of light alert devices 32 can be avoided. .

  Further, when the control unit 42 detects the reception of the relay instruction telegram 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 communication unit 44 to transmit it. A transmission cycle T0 consisting of time T1 and transmission pause time T2 is set three times, for example, and transmission of relay control telegram R is repeated four times during each transmission time T1, and a light emission waiting time obtained from relay instruction telegram RC The relay control telegram R is controlled to relay and transmit the relay light emission waiting time information Tri in which the information Tr0 is corrected taking into consideration the relay required time ΔTi required for relay for each telegram, and the light alarm device 32 of the relay destination is The light emission is started by the relay light emission waiting time information Tri included in the relay control telegram R that is first effectively received by intermittent reception, and the light emission with the light emission cycle Tf is repeated.

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

  In addition, when the control unit 42 detects the reception of the periodic notification message from the light alarm control device 30 via the communication unit 44, the control unit 42 performs control to transmit the confirmation response message ACK. Further, when the control unit 42 detects the reception of the relay instruction telegram 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, and comprises the transmission time T1 and the transmission rest time T2. The transmission cycle T0 is set, for example, three times, and control is repeated to repeat transmission of the relay control message to the periodic notification, for example, four times during each transmission time T1, and in response to this, an acknowledgment response message of the periodic notification is received from the relay destination Controls to relay and transmit this to the light alarm control device 30.

  The control functions of such a light alarm control device 30 and the light alarm device 32 will be clarified in the later 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 control message, FIG. 5 (A) shows a fire alert, FIG. 5 (B) shows message transmission by the light alarm control device, FIG. 5 (C) ) Shows the light emission control of the light alarm device, and FIG. 5 (D) shows a part of relay control of the light alarm device. 6 is a time chart showing light emission control when relay control message is transmitted following FIG. 5 and relay control is performed, and FIG. 6 (A) shows a fire notification, and FIG. 6 (C) shows the light emission control of the light alarm device, FIG. 6 (D) shows the relay control of the light alarm device, and FIG. 6 (E) shows the relay destination of the light alarm device. Control of light emission.

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

  The transmission operation of the light alarm control device 30 sets a transmission cycle T0, which is a combination of the transmission time T1 and the transmission pause time T2, three times, and during each transmission time T1, control telegrams D1 to D4, D5 to D8, D9 to D12 are repeatedly transmitted.

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

  Specifically, if the light emission waiting time information Ts1 from the end of the transmission of the leading 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 light alarm device 32 that receives the control telegrams D1 to D4 performs carrier sensing by intermittent reception, and for example, which of the control telegrams D1 to D4 to be transmitted in the first transmission time T1 is to be received is at the carrier sense timing. Dependent. However, even when any of the control messages D1 to D4 is received, the time when the light emission waiting time information Ts1 to Ts4 elapses from the end of each message reception is the same time t7, and the light emission control is started at time t7.

  The control telegrams 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 telegrams D1 to D4 is different, The light emission timing is the same time t7, and therefore, it is possible to perform synchronous light emission in which the blinking of the light of the light alarm devices 32-1 and 32-2 matches.

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

(Light alarm control by telegram relay)
When transmission of the control telegrams D1 to D12 for three times in FIG. 5 is completed, reception of the acknowledgment telegram ACK from the light alarm device 32 is performed from time t8. The ID of the light alarm device 32 obtained by receiving the confirmation response message ACK is collated with the ID of the transmission destination registered in advance, and it is confirmed that the confirmation response message ACK has not been obtained from all the light alarm devices 32. If determined, the relay instruction telegram 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 disposed at a distant place is not obtained It is.

  In the relay instruction telegram RC transmitted from the light alarm control device 30, relay light emission waiting time information Tr0 which is the time from the transmission end time t10 of the relay instruction telegram RC to the start time t13 of the next light emission cycle Tf under light emission control currently. 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 subjected to light emission control and being continuously received by the light alarm devices 32-1 and 32-2 in FIG. The relay control telegram R is received after a desired operation time necessary for relay control is received from the end of reception of the relay instruction telegram RC, and transmission of the relay control telegram R is started.

  Also in this transmission of relay control message, as shown in FIG. 6D, the transmission cycle T0, which is the combination of the transmission time T1 and the transmission pause time T2, is set three times, and the relay control message R1 is transmitted during each transmission time T1. .About.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 corrected by adding the relay light emission waiting time information Tr0 obtained from the relay instruction telegram RC in consideration of the respective relay required times ΔT1 to ΔT12. It is sending.

Here, taking the first relay control telegram R1 as an example, the required transmission time ΔTi is the time from the reception end time t10 of the relay instruction telegram RC to the transmission end time t11 of the relay control telegram R1, and the relay control telegram 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 under the light emission control is
Tr1 = Tr0−ΔT1
It is determined as

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

The relay light emission waiting time information Tr4 to Tr12 of the relay control telegrams R4 to R12 are similarly calculated as follows.
Tr4 = (Tr0 + Tf) -ΔT4
Tr5 = (Tr0 + Tf) -ΔT5
Tr6 = (Tr0 + 2Tf)-? T6 = 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

  Such relay light emission waiting time information Tr1 to Tr12 is uniquely determined and included in the relay control telegrams R1 to R12 because the light emission time is determined by the light emission cycle Tf of the light alarm device 32 which is in the light emission control. It can be relayed.

  Thus, the relay control telegrams R1 to R12 relayed and transmitted by the light alarm device 32-1 in FIG. 1 are received by the light alarm device 32-3 and, for example, any of the first relay control telegrams R1 to R4 is received. Even if there is, the light emission timing is the same time t17, so the light alarm device 32-3 at the relay destination also performs synchronous light emission in which the blinking of the light of the light alarm devices 32-1 and 32-2 during light emission control matches. 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 control message, FIG. 7 (A) shows a fire alert, and FIG. 7 (B) shows message transmission by the light alarm control device. 7 (C) shows the light emission control of the light alarm device, FIG. 7 (D) shows the relay control of the light alarm device, and FIG. 7 (E) shows the light emission control of the relay destination. The second embodiment is characterized in that the light emission waiting time information included in the first control message and the light emission waiting time information included in the subsequent relay control message are made the same to simplify message generation.

  The fire receiver 10 detects a fire alert at time t1 in FIG. 7A, and starts transmitting a control message at time t2 in FIG. 7B. The transmission operation of FIG. 7 (B) is basically the same as FIG. 5 (B), the transmission cycle T0 consisting of the transmission time T1 and the transmission pause time T2 is set three times, and control is performed during each transmission time T1. The telegrams D1 to D4 are repeatedly transmitted, and the light emission start timing is set within the light emission pause time T2.

  Here, the relationship between the transmission cycle T0 and the light emission cycle Tf in this embodiment is T0 = Tf, and may be T0 = n × Tf. However, n is any integer.

  Also, for each of the control telegrams D1 to D4, as light emission control time information, from the transmission end times t3 to t6 of the control telegrams D1 to D4, the light alarm device 32 of the transmission destination in FIG. The light emission waiting time information Ts1 to Ts4 which is the time until is included.

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

  In addition, when reception of the acknowledgment response message ACK from the time t9 is not obtained for all the light alarm devices, the relay instruction message RC including the transmission start waiting time information Ta is transmitted at the time t10.

  As shown in FIG. 7C, the light alarm device 32 under light emission control that has received the relay instruction telegram RC starts relay control telegram R1 to R4 from time t12 when the transmission waiting time information Ta has passed from the next light emission time t11. Send in 3 divided transmissions. In the relay control telegrams R1 to R4, the same light emission waiting time information Ts1 to Ts4 as in the case of the control telegrams D1 to D4 transmitted from time t2 is transmitted.

  In FIG. 7D, for example, the relay control telegrams R1 to R4 relayed and transmitted by the light alarm device 32-1 in FIG. 1 are received by the light alarm device 32-3 at the relay destination, for example, the first relay control telegram R1. The light emission timing is the same time t17 at any reception of R4, so the light alarm device at the relay destination of the synchronous light emission where the blinking of the light of the light alarm devices 32-1 and 32-2 during the light emission control coincide with each other 32-3.

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

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

(Control operation of light alarm control device)
FIG. 8 is a flow chart 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 of FIG. 2 detects the reception of the fire notification signal from the fire receiver 10 in step S1, the control unit 34 proceeds to step S2 and emits light emission waiting time information Ts1. Control telegrams D1 to D4 including T2 to T4 as light emission control time information are generated, for example, divided into three transmission times T1, and the control telegrams D1 to D4 are repeatedly transmitted.

  Subsequently, the process proceeds to step S3 to receive the confirmation response message ACK from the light alarm device 32, and when all the confirmation response message ACK has not been received, the process proceeds to step S5 and includes the relay light emission waiting time information Tr at that time. Send relay instruction message RC.

(Control operation of light alarm device)
FIG. 9 is a flow chart 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 at the intermittent reception cycle in step S11, the control unit 42 proceeds to step S12 to determine the presence or absence of carrier sense and determines the carrier sense. At S13, the intermittent reception operation is switched to the continuous reception operation.

  Subsequently, when reception of the control message is detected in step S14, the process proceeds to step S15, and light emission control is repeated in which light emission is repeated in the light emission cycle Tf based on the light emission waiting time information Ts included in the received control message.

  Subsequently, when the acknowledgment message ACK is transmitted in step S16, and the reception of the relay instruction message is detected in step S17, the process proceeds to step S18 and the relay control message R including relay emission waiting time information Tr based on the relay required time. Are generated, and relay control telegram R including relay light emission waiting time information Tr is relayed and transmitted in step S19, and the light alarm device 32 at the relay destination blinks the light synchronized with the other light alarm devices 32, that is, light by synchronous light emission Give an alert 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 real time (for example, milliseconds), but the number of bits at a bit rate (bps) used in the alarm system may be used as the light emission waiting time information.

  In addition, when n telegrams of telegram length Td are sent consecutively (n is an integer such as n = 1, 2, 3, ... that indicates the number of telegrams), the n part indicating the number of telegrams is emitted It is good also as waiting time information.

  Also, when n telegrams of telegram length Td are sent continuously, and the time from the end of the transmission of the mth telegram currently being transmitted to the end of telegraphic continuous transmission is Td × (n−m), the telegram currently being transmitted is The part of m shown may be used as the light emission waiting time information.

  In addition, after transmission of n telegrams is completed, light emission waiting time information such as light emission after elapse of a predetermined time Tsfix may be used.

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

(Fire receiver)
Although the above embodiment exemplifies a P type fire receiver monitoring fires on a sensor line basis, a fire detector connected to an address on a transmission line is connected and an R type monitoring fires on an address basis It may be a fire receiver.

(Others)
Further, the present invention includes appropriate modifications that do not impair the objects and advantages thereof, and is not limited by the numerical values shown in the above-described embodiment.

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: notification input unit 38, 44: communication unit 48: light emitting unit

Claims (8)

In an alarm system that detects a fire and gives a light alarm,
When a fire is detected, a control telegram instructing light control is transmitted, and light emission waiting time information from the predetermined position of the telegram within a predetermined light emission cycle (Tf) when the control telegram is received to light emission start A light alarm control device that transmits (Ts) in the control message;
A light alarm device which starts light emission of a light emitting unit according to the light emission waiting time information (Ts) included in the control message received first by intermittent reception, and repeats light emission according to the light emission cycle (Tf);
The alarm system characterized by having provided.
In the alarm system according to claim 1,
When the light alarm control device detects a fire, the light alarm control device sets a predetermined transmission cycle consisting of a predetermined transmission time (T1) and a transmission pause time (T2) a plurality of times, and between the transmission times (T1) An alarm system characterized by repeating transmission of a control message a plurality of times.
In the alarm system according to claim 1 or 2,
The light alarm control device registers identification information of all the light alarm devices to be transmission destinations, transmits the control message, and transmits relay transmission when acknowledgment telegrams are not received from all the transmission destinations. Send relay instruction message to instruct,
The alarm system characterized in that, when the light alarm device receives the 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.
In the alarm system according to claim 3,
The light alarm control device transmits, in the relay instruction telegram, relay light emission waiting time information (Tr0) from the end of reception when the relay instruction telegram is received to the start of the next light emission,
The light alarm device in the light emission control which has received the relay instruction message, corrects the relay light emission waiting time information (Tr0) in consideration of the relay required time (ΔTi) required for relaying the telegram in consideration of the relay light emission waiting time information (Tr0) Information (Tri) is included in the relay control message and relayed,
The light alarm device at the relay destination starts light emission of the light emitting unit according to the corrected relay light emission waiting time information (Tri) included in the relay control message received first by intermittent reception, and emits light at the light emission cycle (Tf) An alarm system characterized by repeating.
The alarm system according to claim 4, wherein the required relay 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. An alarm system characterized by time.
The alarm system according to claim 4 or 5, wherein the relay instruction message is received during light emission control,
When the transmission of the relay control message is ended within the first light emission cycle of transmitting the relay instruction message, the relay light emission waiting time corrected by subtracting the relay required time (ΔTi) from the relay light emission waiting time information (Tr0) is corrected Calculate time information (Tri = Tr0−ΔTi) and include it in the relay control message,
When the transmission of the relay control message is ended within the second and subsequent light emission cycles, one or more light emission cycles according to the order of the light emission cycle to which the transmission end timing belongs to the relay light emission waiting time information (Tr0) A relay light emission waiting time information (Tri = (Tr0 + n · Tf) −ΔTi) corrected by subtracting the relay required 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, in the relay instruction telegram, transmission waiting time information (Ta) from the start of the light emission cycle when the control telegram is received to the start of telegram transmission,
The light alarm device having received the relay instruction message relays and transmits the relay control message including the light emission waiting time information (Ts),
The light alarm device at the relay destination controls the light emission start of the light emitting unit according to the light emission waiting time information (Ts) included in the relay control message received first by intermittent reception, and repeats light emission for each light emission cycle. An alarm system characterized by
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 consisting of a predetermined transmission time (T1) and a transmission pause time (T2) a plurality of times to set the transmission time (T1) The alarm system characterized by repeating relay transmission of the relay control message a plurality of times in the meantime.

Images