JP6880292B2 - Optical alarm device - Google Patents

Description

The present invention relates to an optical alarm device.

Conventionally, in the case of a disaster such as a fire, a sound device for detecting the disaster and notifying the people in the building of the occurrence of the disaster has been installed in a building such as a hospital or a hotel. The sound device notifies the people in the building that a disaster has occurred by sounding an alarm sound.

In recent years, with the increase in the number of elderly people and the progress of social participation of persons with disabilities, it is expected that the people in buildings such as hospitals and hotels include hearing-impaired people including elderly people with hearing loss. Hearing-impaired people may not be able to respond promptly to a disaster because they cannot hear the alarm sound when a disaster occurs.

In order to solve the above problem, an alarm system for notifying the occurrence of a disaster by using an optical alarm device such as a flashlight having high visibility has been proposed (see, for example, Patent Document 1). In the above-mentioned alarm system, an alarm (hereinafter referred to as "optical alarm") is given by the optical alarm device emitting a flash light in the event of a disaster such as a fire, so that an effective alarm can be given to a hearing impaired person. ..

In addition, a wireless alarm system has also been proposed in order to reduce the labor and cost of wiring. When a fire receiver receives a fire alarm from a fire detector, the wireless warning system outputs a fire signal to the repeater via a new line and sends an alarm command signal (control message) from the repeater. Wirelessly transmit to the optical alarm device. Then, the optical alarm device drives the light emitting unit to emit light by receiving the alarm command signal wirelessly transmitted from the repeater, and repeats the light emission at a predetermined cycle. Further, for an optical alarm device installed in a place where radio waves do not reach, a radio wave repeater is provided in the middle to relay an alarm command signal.

Japanese Unexamined Patent Publication No. 2013-191055

However, in the conventional wireless warning system, in order to make the receiver and the optical alarm wireless wireless, it is necessary to connect a repeater having a wireless function to the receiver using a new line. is there. In addition, a large number of radio wave repeaters may be installed in order to transmit an alarm command signal to an optical alarm device installed in a place where radio waves do not reach. Therefore, a high cost is incurred in wirelessly connecting the receiving device and the alarm device. Further, when the receiving device and the alarm device are made wireless, power supply for waiting for the alarm operation and the start / end of the alarm is required, and the alarm device requires a battery or a power line.

The present invention has been made in view of such circumstances, and an object of the present invention is to enable wireless communication between a receiving device and an optical alarm device at a lower cost.

One aspect of the present invention is an optical alarm device that gives an optical alarm by turning on a light emitter provided in the own device based on a control message received by a radio signal, and is a waiting time included in the control message. When the light emission operation is performed after the lapse of time and the control message is wirelessly relayed to another optical alarm device, the relay light emission waiting time in which the time required for relaying the control message is added to the waiting time is used as the control message for relay. It is an optical alarm device including a control unit that causes the other optical alarm device to emit light after the lapse of the relay light emission waiting time.

As described above, according to the present invention, it is possible to provide an optical alarm device that can wirelessly connect the receiving device and the optical alarm device at a lower cost.
In addition, the optical alarm control device wirelessly transmits a control signal supplied by an alarm signal to indicate an optical alarm, and wirelessly transmits a control release signal by the electric charge stored in the power storage unit by the alarm signal. No power line is required. Maintenance is improved by eliminating the need for batteries, and workability is improved by eliminating the need for power lines.
Further, since the optical alarm is used as a repeater, a dedicated repeater becomes unnecessary, and the system can be provided at low cost.

It is a figure which shows an example of the schematic structure of the alarm system 1 in this embodiment. It is a figure which shows an example of the signal format of the control message transmitted from the optical alarm control device in this embodiment. It is a figure which shows an example of the schematic structure of the optical alarm device 30 in this embodiment. It is a flowchart which shows the process flow of the optical alarm device 30 of the alarm system 1 in this embodiment. It is a sequence diagram which shows the optical alarm operation of the alarm system 1 in this embodiment.

Hereinafter, the present invention will be described through embodiments of the invention, but the following embodiments do not limit the inventions that fall within the scope of the claims. Also, not all combinations of features described in the embodiments are essential to the means of solving the invention. In the drawings, the same or similar parts may be designated by the same reference numerals to omit duplicate explanations. In addition, the shape and size of elements in the drawings may be exaggerated for a clearer explanation.

The alarm system in the embodiment alerts the district acoustic line when the detector line and the district acoustic line are connected and a disaster detection signal is acquired from the disaster detector that detects an abnormality such as a fire via the detector line. A receiver that supplies signals, an optical alarm control device that is connected to the district acoustic line and wirelessly transmits a control message that instructs an optical alarm based on an alarm signal supplied via the district acoustic line, and an optical alarm control device. It is provided with an optical alarm device that gives an optical alarm by turning on a light emitting body provided in the own device based on the control message wirelessly transmitted from.
Hereinafter, the alarm system of the embodiment will be described with reference to the drawings.

FIG. 1 is a diagram showing an example of a schematic configuration of the alarm system 1 in the present embodiment. As shown in FIG. 1, the alarm system 1 includes a disaster detector 5, a receiving device 10, an optical alarm control device 20, and a plurality of optical alarm devices 30 (optical alarm devices 30-1 to 30-n (n is a positive integer). )) Is provided.

The disaster detector 5 is arranged on the ceiling or wall of each floor of the building. Specifically, one or a plurality of disaster detectors 5 are arranged on each floor at legal installation intervals. The disaster detector 5 is connected to the receiving device 10 via the disaster detector line DL. The disaster detector 5 may be connected to the receiving device 10 wirelessly instead of by wire.

The disaster detector 5 detects a disaster such as a fire or a gas leak. When the disaster detector 5 detects a disaster such as a fire or a gas leak, the disaster detector 5 outputs a disaster detection signal. For example, the disaster detector 5 is a fire detector that detects a fire. For example, the disaster detector 5 detects the smoke concentration or temperature in a predetermined section, and determines that a fire has occurred when the detected smoke concentration or temperature exceeds a predetermined threshold value. Alternatively, the disaster detector 5 is provided with a sensor element for detecting the smoke concentration or temperature inside its own device, and determines that a fire has occurred based on the detection result (for example, ON signal) of the sensor element. When the disaster detector 5 detects the occurrence of a disaster, the disaster detector 5 outputs a disaster detection signal indicating the occurrence of the disaster to the receiving device 10 via the disaster detector line DL. For example, when the disaster detector 5 detects the occurrence of a disaster, the disaster detector 5 transmits the disaster detection signal to the receiving device 10 by passing a notification current, which is a predetermined current, as a disaster detection signal to the disaster detector line DL. Output a disaster alert. Further, a terminating device (terminating resistor) 6 is connected to the end of the disaster detector line DL.

The receiving device 10 includes a line receiving unit 11, a receiving control unit 12, a display unit 13, an operation unit 14, a power supply unit 16, an output unit 17, and a district acoustic line terminal 18. Each part of the receiving device 10 may be realized by hardware, may be realized by software, or may be realized by a combination of hardware and software. In addition, the computer may function as a part of the receiving device 10 by executing the program. The program may be stored on a computer-readable medium or may be stored on a storage device connected to the network.

The line receiving unit 11 receives the disaster detection signal output from the disaster detector 5 via the disaster detector line DL. Further, when the line receiving unit 11 receives the disaster detection signal, the line receiving unit 11 outputs a notification signal instructing the notification of the disaster to the reception control unit 12. The line receiving unit 11 may monitor a connection failure such as a disconnection or a short circuit of the disaster detector line DL. Further, the line receiving unit 11 may determine the fire occurrence floor based on the disaster detection signal output from the disaster detector 5. The line receiving unit 11 may output the determined fire occurrence floor and the alarm signal to the receiving control unit 12.

The display unit 13 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 14 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 reception control unit 12 outputs a drive signal to the output unit 17 based on the alarm signal supplied from the line reception unit 11.

The power supply unit 16 transforms or rectifies a first power supply supplied from an external power supply (not shown) to convert it into a second power supply. The power supply unit 16 supplies the converted second power supply to each unit constituting the receiving device 10.

The output unit 17 outputs an alarm signal to the optical alarm control device 20 and the sound device 100 based on the drive signal supplied from the reception control unit 12. Specifically, the output unit 17 is connected to the optical alarm control device 20 via the district acoustic line BL. The district acoustic line terminal 18 is a connection terminal for connecting the district acoustic line BL. When the drive signal is supplied from the reception control unit 12, the output unit 17 outputs a voltage as an alarm signal to the optical alarm control device 20 and the acoustic device 100 via the district acoustic line BL. Conventionally, the district acoustic line BL has been used to supply a voltage from the receiving device 10 to the acoustic device 100 in the event of a disaster. That is, when a disaster occurs, the output unit 17 supplies a voltage to the district acoustic line BL to ring the acoustic device 100. A feature of the present invention is that the optical alarm control device 20 is connected in parallel to the existing district acoustic line BL connected to the receiving device 10 and the acoustic device 100 for ringing of the acoustic device 100. As a result, the optical alarm device 30 can be inexpensively introduced into an existing alarm system (a system that notifies an alarm by sounding an acoustic device when a disaster occurs) without using a new line. The output unit 17 may monitor connection failures such as disconnection and short circuit of the district acoustic line BL.

The optical alarm control device 20 is connected to the receiving device 10 via the district acoustic line BL. For example, the optical alarm control device 20 is provided in the building. The optical alarm control device 20 includes a wireless communication unit 21, a control unit 22, a storage unit 23, a power storage unit 24, and an antenna 25.

The wireless communication unit 21 wirelessly communicates with the optical alarm device 30 via the antenna 25 under the control of the control unit 22.

The optical alarm control device 20 is not operating in a state where an alarm signal is not supplied from the receiving device 10 via the district acoustic line BL. When the alarm signal is supplied, the optical alarm control device 20 is activated by using the alarm signal.
When the alarm signal is supplied from the receiving device 10 via the district acoustic line BL, the control unit 22 generates a control telegram for instructing the optical alarm and wirelessly transmits it to the optical alarm device 30. The transmission of the control telegram by the optical alarm control device 20 corresponds to the intermittent reception of the optical alarm device 30, and the transmission cycle T0 including the predetermined transmission time T1 and the transmission pause time T2 is repeated a plurality of times, for example, three times, and each transmission is performed. The control telegram is transmitted a plurality of times in succession during the time T1. For example, the transmission time T1 and the transmission pause time T2 are 2 seconds each. In this way, the control unit 22 wirelessly transmits the control telegram to the optical alarm device 30 at a predetermined interval (transmission pause time T2) while the alarm signal is being supplied from the receiving device 10. FIG. 2 is a diagram showing an example of a signal format of a control telegram transmitted from the optical alarm control device 20 in the present embodiment. As shown in FIG. 2, the control telegram includes a start code, a source ID, a communication control code, control contents, optical control time information, and a checksum. The size of the control telegram is about 100 bits. In the storage unit 23, the identification information (ID) of the optical alarm device 30 as the communication destination of the wireless communication is registered in advance. When the optical alarm device 30 shifts from the intermittent reception state to the constant reception state (described later) by performing the optical alarm, the transmission pause time T2 is longer in the transmission of the control telegram by the optical alarm control device 20. It may be set to the time. For example, when the optical alarm device 30 is in the intermittent reception state, the control unit 22 wirelessly transmits a control telegram with the transmission pause time T2 set to 2 seconds, and when the optical alarm device 30 is in the constant reception state, the control unit 22 wirelessly transmits the control message. The control telegram is transmitted wirelessly with the transmission pause time T2 set to 1 minute. Further, the control unit 22 sets the transmission time T1 when the optical alarm device 30 is in the constant reception state to a shorter time than the transmission time T1 when the optical alarm device 30 is in the intermittent reception state. May be good.

When the confirmation response message ACK (ACK: ACKnowledgement) for the transmission of the control message is not received from the optical alarm device 30 at the transmission destination, the control unit 22 generates a relay instruction message instructing the relay transmission and is performing the optical alarm. It is transmitted to the optical alarm device 30. The optical alarm device 30 during an optical alarm is an optical alarm device 30 that has transmitted an acknowledgment message ACK to the control unit 22 for transmission of a control message. The optical alarm device 30 that has received the relay instruction message causes another optical alarm device 30 to relay and transmit the relay control message. If the acknowledgment message ACK cannot be received through the optical alarm device 30 that has transmitted the relay control message, the control unit 22 instructs the relay transmission by sequentially transmitting the relay control message to the other optical alarm devices 30.

While the alarm signal is being supplied from the receiving device 10, the power storage unit 24 charges using the alarm signal. Then, when the supply of the alarm signal is stopped, the control unit 22 wirelessly transmits a control release telegram to the optical alarm device 30 using the electric charge stored in the power storage unit 24. The control release telegram is a signal instructing the stop of the optical alarm.

The optical alarm device 30 (optical alarm device 30-1 to 30-n (n is a positive integer)) includes rooms, corridors, passages, toilets, parking lots, other common areas, etc., hearing-impaired persons and hearing-impaired persons, etc. It is installed in a place where there is a possibility of entering. A unique ID is assigned to each of the optical alarm devices 30-1 to 30-n.

When the optical alarm control device 20 supplies a control telegram to which the ID of the own device is assigned, the optical alarm device 30 issues an alarm by light (hereinafter, referred to as “optical alarm”). The light alarm is to make the light emitting body 33 provided in the light alarm device 30 emit light. For example, the light emitter 33 is a light source such as an electronic flash represented by a strobe (registered trademark) that emits an intense flash or an LED lamp having a large amount of light. Therefore, the optical alarm device 30 notifies the people in the building in which the device is installed of the occurrence of a disaster by blinking the light emitting body 33. The optical alarm device 30 in the present embodiment will be specifically described below.

FIG. 3 is a diagram showing an example of a schematic configuration of the optical alarm device 30 according to the present embodiment.
As shown in FIG. 3, the optical alarm device 30 includes a wireless communication unit 31, a control unit 32, a light emitting body 33, a power supply unit 34, a storage unit 36, an antenna 37, and a power supply device (not shown).
The wireless communication unit 31 wirelessly communicates with the optical alarm control device 20 via the antenna 37 based on the control of the control unit 32. As the power supply device, a lithium dry cell or the like having a rating of 3 V can be used.

When the wireless communication unit 31 does not receive the control message, the wireless communication unit 31 performs intermittent reception (intermittent reception state). The intermittent reception cycle by the wireless communication unit 31 is set to a predetermined cycle that is shorter than the transmission time T1 by the control unit 22 of the optical alarm control device 20. The wireless communication unit 31 performs carrier sense in each of the intermittent reception cycles, and if carrier sense is achieved, switches to continuous reception and receives a control message from the optical alarm control device 20. When the wireless communication unit 31 receives the control telegram, the wireless communication unit 31 shifts from the intermittent reception state to the constant reception state in which the telegram such as the constant control telegram and the control release telegram can always be received.

When the control unit 32 detects the reception of the control message from the optical alarm control device 20 via the wireless communication unit 31, the control unit 32 confirms the content of the control message. When the source ID of the control message acquired via the wireless communication unit 31 matches the ID registered in the storage unit 36, the control unit 32 processes based on the control content of the control message. I do. For example, the control unit 32 acquires the light emission waiting time information Ts set as the optical control time information in the control message, and activates the timer in the own device when the reception of the control message ends. When the time counting time of the activated timer reaches the light emission waiting time information Ts, the control unit 32 outputs a drive signal to the power supply unit 34. When a drive signal is supplied from the light emission control unit 321, the power supply unit 34 supplies a pulse voltage to the light emitting body 33 to cause the light emitting body 33 to emit light at a preset cycle.

Further, when the control unit 32 receives the control message and starts the light emission control, the control unit 32 transmits the acknowledgment message ACK via the wireless communication unit 31. For example, the transmission timing of the acknowledgment message ACK determines different delay times according to the ID of the optical alarm device 30, and the collision of the acknowledgment message ACK from the plurality of optical alarm devices 30 can be avoided.

Further, the control unit 32 stops the output of the drive signal to the power supply unit 34 when a new control message is not received from the optical alarm control device 20 via the wireless communication unit 31 during the predetermined time. As a result, the light emission of the light emitting body 33 is stopped. For example, the control unit 32 determines whether or not the received control message is a new control message based on the control message number.

Further, when the control unit 32 detects the reception of the control release message from the optical alarm control device 20 via the wireless communication unit 31, the control unit 32 stops the output of the drive signal to the power supply unit 34. As a result, the light emission of the light emitting body 33 is stopped. When the light emission of the light emitting body 33 is stopped by the control unit 32, the wireless communication unit 31 shifts from the constant reception state to the intermittent reception state.

Further, when the control unit 32 detects the reception of the relay instruction message from the optical alarm control device 20 via the wireless communication unit 31 during the light emission control of the light emitting body 33 based on the control message, the control unit 32 is obtained from the relay instruction message. The light emission waiting time information Tr0 is relayed to the relay destination optical alarm device 30 by including the relay light emission waiting time information Tri, which is corrected by taking into account the relay required time ΔTi required for relaying for each telegram, in the relay control telegram. The relay destination optical alarm device 30 starts light emission of the light emitting body 33 by the relay light emission waiting time information Tri included in the relay control telegram. The ID of the relay destination optical alarm device 30 is registered in the storage unit 36 of the optical alarm device 30. Therefore, when the control unit 32 receives the relay instruction message, the control unit 32 wirelessly transmits the relay light emission waiting time information Tri and the ID of the relay destination optical alarm device 30 stored in the storage unit 36 in the relay control message. .. As described above, the optical alarm device 30 stores in advance the communication route for wireless communication. However, in the present embodiment, it is not necessary for all the optical alarm devices 30 to register the IDs of the relay destination optical alarm devices 30.

Further, when the ID of the relay destination optical alarm device 30 is registered in the storage unit 36, the control unit 32 relays and transmits the control release telegram to the relay destination optical alarm device 30 after the carrier sense. That is, when the control unit 32 receives the control release telegram from the optical alarm control device 20 via the wireless communication unit 31, the control unit 32 relays and transmits the received control release message to the optical alarm device 30 that relay-transmits the control message. When the control unit 32 does not receive the acknowledgment message ACK for the transmitted control release message from the relay destination optical alarm device 30, the control release message is sent to the relay destination optical alarm device 30 a predetermined number of times. Is retransmitted. When the acknowledgment message ACK is received, the control unit 32 returns to the intermittent reception state. If the ID of the relay destination optical alarm device 30 is not registered in the storage unit 36, the control unit 32 shifts to the intermittent reception state immediately after receiving the control release telegram. As a result, the alarm system 1 can stop the optical alarms of all the wireless optical alarm devices 30 when the alarm state is released.

Each part of the optical alarm device 30 may be realized by hardware, may be realized by software, or may be realized by a combination of hardware and software. In addition, the computer may function as a part of the optical alarm device 30 by executing the program. The program may be stored on a computer-readable medium or may be stored on a storage device connected to the network.

Hereinafter, the flow of processing of the optical alarm of the alarm system 1 in the present embodiment will be described with reference to FIGS. 4 and 5. FIG. 4 is a sequence diagram showing a processing flow of the optical alarm device 30 of the alarm system 1 in the present embodiment. FIG. 5 is a timing chart showing the optical warning operation of the warning system 1 according to the present embodiment. In the flow of the optical alarm processing of the alarm system 1 shown below, for convenience of explanation, the case where the optical alarm device 30 wirelessly transmits only to the optical alarm control device 20 without relay transmission will be described.

The receiving device 10 receives the disaster detection signal output from the disaster detector 5 via the disaster detector line DL (step S101). When the receiving device 10 receives the disaster detection signal from the disaster detector 5, it shifts to the alarm state and is connected to the district acoustic line BL by applying a voltage (for example, 24V) to the district acoustic line BL. A voltage is supplied to the optical alarm control device 20. (Step S102). The power storage unit 24 of the optical alarm control device 20 is charged with the voltage supplied from the receiving device 10 (step S103).

When a voltage is supplied from the receiving device 10 via the district acoustic line BL, the optical alarm control device 20 is activated by using the voltage as a power source. Then, the optical alarm control device 20 generates a control telegram for instructing the optical alarm, and wirelessly transmits the generated control telegram to the optical alarm device 30 at predetermined intervals. The transmission cycle of the control telegram may be determined according to the reception state (intermittent reception state, constant reception state) of the optical alarm device 30.

When the optical alarm device 30 receives the control telegram wirelessly transmitted from the optical alarm control device 20, the optical alarm device 30 shifts to the constant reception state (step S105). Further, when the source ID of the received control message matches the ID registered in the storage unit 36 of the own device, the optical alarm device 30 performs processing based on the control content of the control message. Do. That is, the optical alarm device 30 acquires the light emission waiting time information Ts set as the optical control time information in the control telegram, and activates the timer in the own device when the reception of the control telegram ends. When the time counting time of the activated timer reaches the light emission waiting time information Ts, the light alarm device 30 causes the light emitter 33 to emit light at regular intervals and starts a light alarm (step S106).

The receiving device 10 cancels the alarm state when the recovery operation is performed by the user (step S107). Then, the receiving device 10 stops applying the voltage to the district acoustic line BL (step S108). By this. The supply of voltage to the optical alarm control device 20 connected to the district acoustic line BL is stopped. When the voltage value of the district acoustic line BL becomes equal to or less than a predetermined threshold value, the optical alarm control device 20 wirelessly transmits a control release telegram to the optical alarm device 30 using the electric charge stored in the power storage unit 24. (Step S109).

When the optical alarm control device 20 receives the control release telegram, the optical alarm device 30 shifts from the constant reception state to the intermittent reception state (step S110). Then, the light alarm device 30 stops the light alarm by stopping the light emission of the light emitting body 33 (step S111). However, when the ID of the relay destination optical alarm device 30 is registered in the storage unit 36, the optical alarm device 30 relays and transmits a control release message to the relay destination optical alarm device 30 after carrier sensing. .. When the confirmation response message ACK for the control release message transmitted from the relay destination optical alarm device 30 is not received, the optical alarm device 30 releases control of the relay destination optical alarm device 30 a predetermined number of times. Resend the message. When the optical alarm device 30 receives the acknowledgment message ACK for the transmitted control release message, the optical alarm device 30 shifts to the intermittent reception state.

As described above, in the alarm system 1, the optical alarm control device 20 is connected to the district acoustic line BL, and the optical alarm device 30 sends a control message instructing an optical alarm based on an alarm signal supplied via the district acoustic line. Wirelessly transmit to. As a result, the optical alarm device 30 can be introduced into an existing alarm system (a system that notifies an alarm by sounding an acoustic device when a disaster occurs) without using a new line. As a result, the time required for construction that occurs when the optical alarm device 30 is introduced can be shortened. Further, for the optical alarm device 30 installed in a place where radio waves do not reach, such as a control telegram and a control release telegram, the control telegram and the control release telegram are relayed via the optical alarm device 30 in the place where the radio waves reach. As a result, the alarm system 1 can control the optical alarms of all the optical alarm devices 30 without providing a radio wave repeater in the middle. Therefore, the radio between the receiving device 10 and the optical alarm device 30 can be made wireless at a lower cost. In addition, maintenance and workability are improved because batteries and power lines are not required for alarm operation.

In the above-described embodiment, the optical alarm control device 20 has a connector capable of connecting a power source (for example, a secondary battery) for checking the operation of the optical alarm device 30, when registering an ID, or when transmitting an emergency control release telegram. You may prepare for. The operation check of the optical alarm device 30 is to make the optical alarm device 30 give an optical alarm except when a disaster occurs. Thereby, when the operation of the optical alarm device 30 is confirmed or the ID is registered, the operation of the optical alarm device 30 and the ID registration can be performed without ringing the sound device 100 by connecting the power supply to the connector. The ID registration referred to here is the registration of the ID of the optical alarm device 30 wirelessly transmitted by the optical alarm control device 20, and the IDs of the optical alarm control device 20 and the relay destination optical alarm device 30 wirelessly transmitted by the optical alarm device 30. Including registration. The transmission of the emergency control release telegram here means that the radio message for control release, which is transmitted when the alarm state is released due to the reception of a disaster detection signal, etc., is sent to the optical alarm device due to a communication error or the like. When the optical alarm device remains in the alarm operation, such as when the signal is not transmitted normally, the control release telegram is retransmitted by the user's operation or the like. As a result, even if the optical alarm is not canceled, the optical alarm can be canceled.

Further, in the above-described embodiment, the optical alarm control device 20 may include an indicator light indicating that a voltage is applied from the receiving device 10 via the district acoustic line BL.
Further, the light emitting body 33 of the optical alarm device 30 and the indicator lamp of the optical alarm control device 20 may be formed of a material such as a resin through which radio waves pass, and the antennas 25 and 37 may be built in the formed portions. Further, the blinking of the optical alarm device may be synchronized by forming an appropriate group such as a floor unit, a visible range, and all the optical alarm devices connected to the receiver. As the synchronization of blinking, the timing of turning on / off may be moved in order along a specific direction, or the timing of turning on / off may be repeated at substantially the same timing. By synchronizing the blinking of the light alarm device, it is possible to prevent blinding and flicker due to continuous light emission. Further, by changing the blinking timing along a specific direction, it is possible to utilize the optical alarm device for guiding the evacuation direction.

The receiving device 10 and the optical alarm control device 20 in the above-described embodiment may be realized by a computer. In that case, the program for realizing this function may be recorded on a computer-readable recording medium, and the program recorded on the recording medium may be read by the computer system and executed. The term "computer system" as used herein includes hardware such as an OS and peripheral devices. Further, the "computer-readable recording medium" refers to a portable medium such as a flexible disk, a magneto-optical disk, a ROM, or a CD-ROM, or a storage device such as a hard disk built in a computer system. Further, a "computer-readable recording medium" is a communication line for transmitting a program via a network such as the Internet or a communication line such as a telephone line, and dynamically holds the program for a short period of time. It may also include a program that holds a program for a certain period of time, such as a volatile memory inside a computer system that serves as a server or a client in that case. Further, the above program may be for realizing a part of the above-mentioned functions, and may be further realized for realizing the above-mentioned functions in combination with a program already recorded in the computer system. It may be realized by using a programmable logic device such as FPGA (Field Programmable Gate Array).

Although the embodiments of the present invention have been described in detail with reference to the drawings, the specific configuration is not limited to this embodiment, and includes designs and the like within a range not deviating from the gist of the present invention.

The execution order of each process such as operation, procedure, step, and step in the device, system, program, and method shown in the claims, the specification, and the drawing is particularly "before" and "prior to". It should be noted that it can be realized in any order unless the output of the previous process is used in the subsequent process. Even if the scope of claims, the specification, and the operation flow in the drawings are explained using "first", "next", etc. for convenience, it means that it is essential to carry out in this order. It's not a thing.

1 Alarm system 5 Disaster detector 10 Receiver 20 Optical alarm control device 30 Optical alarm device 31 Wireless communication unit 32 Control unit 33 Light emitter 34 Power supply unit 23, 36 Storage unit 25, 37 Antenna

Claims (1)

It is an optical alarm device that gives an optical alarm by turning on the light emitter provided in the own device based on the control message received by the wireless signal.
When the light emission operation is performed after the elapse of the waiting time included in the control message and the control message is wirelessly relayed to another optical alarm device, the relay light emission wait is obtained by adding the time required for relaying the control message to the waiting time. It is provided with a control unit that causes the other optical alarm device to emit light after the relay light emission waiting time elapses by including the time in the relay control message and transmitting the light alarm device.
Optical alarm device.

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