Disaster prevention facility

Abstract

To simplify the installation configuration by reducing the wiring quantity of a broadcast audio signal line.SOLUTION: This fire alarm system is provided with a receiver 10, an analog fire sensor 22 connected to a transmission line 12 drawn from the receiver 10, a repeater 16 connected to the transmission line 12 and a broadcasting sound signal line 14 from the receiver 10, and a speaker 20 connected to the repeater 16. The broadcast audio signal line 14 has a trunk line from the receiver 10, the repeater 16 of the uppermost floor is connected to the trunk line of the broadcast audio signal line 14, and the repeaters 16 except for the uppermost floor are connected to the broadcast audio signal line 14 branched from the trunk line. A receiver 10 transmits a control signal to a repeater 16 via a transmission line 12 and transmits a broadcast audio signal via a broadcast audio signal line 14 when a speaker 20 makes a broadcast, the repeater 16 amplifies the received broadcast audio signal on the basis of the received control signal and transmits the amplified signal to the speaker 20, and the speaker 20 makes a broadcast on the basis of the received broadcast audio signal.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to disaster prevention equipment. [Background technology]

[0002] Conventionally, disaster prevention equipment such as fire alarm equipment that monitors fires by connecting fire detectors to signal lines drawn from a receiver is known. Furthermore, conventional emergency broadcast equipment works in conjunction with the disaster prevention equipment to notify the occurrence of a fire and broadcast evacuation guidance in the event of a fire.

[0003] The fire receiver installed in the disaster prevention equipment outputs a fire alarm when it receives an alarm signal from a fire detector that has detected a fire in a warning area and triggered an alarm, and also transmits a floor-specific signal as an alarm area identification signal indicating the alarm area to the emergency broadcast device.The emergency broadcast device that receives this outputs a detector alarm broadcast from speakers installed on the floor where the fire occurred and on the floor immediately above, saying, "The fire alarm on floor XX has just been activated.We are checking it, so please pay attention to the next broadcast."

[0004] When a predetermined time has passed since the detector was activated, or when a disaster prevention center staff member or other person goes to the scene and confirms a fire, the fire receiver sends a fire confirmation signal to the emergency broadcast device based on a fire confirmation operation, such as pressing a switch on the transmitter, and the previous detector alarm broadcast is switched to a fire broadcast, which outputs "Fire. Fire. A fire has broken out on the XX floor. Please remain calm and evacuate." Also, when a predetermined set time has passed since the fire broadcast, the emergency broadcast device switches to a simultaneous broadcast for the entire building.

[0005] On the other hand, if an emergency response officer goes to the scene and confirms that there is no fire, the emergency broadcast system will switch from the previous alarm broadcast to a non-fire broadcast by operating the non-fire broadcast switch, and will output the message, "We have checked the operation of the fire detector just now and found no abnormalities. Please rest assured." [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Publication No. 5-233984 [Patent Document 2] Japanese Patent Application Publication No. 6-314385 [Patent Document 3] Japanese Patent Application Laid-Open No. 2007-219870 [Patent Document 4] Japanese Patent Application Publication No. 2017-191418 [Patent Document 5] Japanese Patent Application Publication No. 06-132748 [Patent Document 6] Japanese Patent Application Laid-Open No. 2002-170167 [Patent Document 7] Japanese Patent Application Laid-Open No. 2004-126827 [Patent Document 8] Japanese Patent Application Publication No. 07-230585 [Patent Document 9] Japanese Patent Application Laid-Open No. 2010-061614 [Patent Document 10] Japanese Patent Application Laid-Open No. 2014-016684 [Patent Document 11] JP 2017-21750 A [Patent Document 12] Japanese Patent Application Publication No. 2016-173854 [Patent Document 13] Japanese Patent Application Publication No. 4-173854 [Patent Document 14] Japanese Patent Application Publication No. 7-105466 Summary of the Invention [Problem to be solved by the invention]

[0007] However, with such conventional emergency broadcast equipment, speaker signal wires must be run from the amplifier device of the emergency broadcast device installed in a disaster prevention center, etc., to speakers in a specified broadcast area, for example, on each floor.As the number of broadcast areas (floors) increases, the number of wires also increases, increasing the overall amount of wiring, requiring a large wiring space, requiring labor-intensive installation work, and increasing equipment costs.

[0008] Furthermore, conventional disaster prevention equipment and emergency broadcast equipment, which are linked, require separate installation space for the receiver and emergency broadcast panel, resulting in overlapping display content such as fire indicators and fire floor indicators, which makes the equipment configuration complex as the equipment is displayed separately. Furthermore, disaster prevention personnel must operate the receiver and emergency broadcast panel separately, which can be time-consuming and labor-intensive to operate and respond to emergencies such as fires. To solve this problem, the inventors of the present application have proposed disaster prevention equipment that incorporates the functions of emergency broadcast equipment into the disaster prevention equipment receiver, thereby reducing the setup space, avoiding overlapping displays in the event of a fire, and improving the operability of fire response and emergency broadcasts. However, even with this disaster prevention equipment, as with conventional broadcast equipment, the amount of speaker signal wiring increases, requiring a large wiring space, requiring labor-intensive installation work, and increasing equipment costs.

[0009] An object of the present invention is to provide disaster prevention equipment that simplifies the equipment configuration and reduces costs by reducing the amount of speaker signal wiring. [Means for solving the problem]

[0010] (Disaster prevention equipment) The present invention is a disaster prevention equipment, a receiver with an integrated broadcast control panel; a first group of fire detectors connected to a first transmission line extending from the receiver and configured to monitor fires in a first area; a second group of fire detectors connected to a second transmission line drawn from the receiver separately from the first transmission line, the second group monitoring fires in a second area different from the first area; a first broadcast repeater connected to a first broadcast notification device that broadcasts to a first area, and connected to a first transmission line drawn from the receiver and a broadcast audio signal line drawn from the receiver separately from the transmission line; a second broadcast repeater connected to a second broadcast notification device that broadcasts to a second area and connected to a second transmission line and a broadcast audio signal line drawn from the receiver; Equipped with The broadcast audio signal line has a trunk line from the receiver, The first broadcast repeater and the second broadcast repeater are connected to a trunk line of a broadcast audio signal line or a broadcast audio signal line branched from the trunk line, The receiver is When a broadcast is made by the first broadcast notification device in response to the detection of a fire, a control signal is transmitted to the first broadcast repeater via the first transmission line, and a broadcast audio signal is transmitted via the broadcast audio signal line; When a broadcast is made by the second broadcast notification device in response to the detection of a fire, a control signal is transmitted to the second broadcast repeater via the second transmission line, and a broadcast audio signal is transmitted via the broadcast audio signal line; The broadcast repeater amplifies the received broadcast audio signal based on the received control signal and transmits it to a broadcast notification device located in the same broadcasting area; The broadcast notification device is characterized by broadcasting based on the received broadcast audio signal. [Effects of the Invention]

[0011] (Effectiveness of disaster prevention equipment) The present invention is a disaster prevention facility comprising: a receiver with an integrated broadcast control panel; a plurality of fire detectors having unique addresses and connected to transmission lines drawn from the receiver for each alert area; a plurality of broadcast repeaters arranged in broadcast districts separated by the same areas as the alert areas and connected to the transmission lines for the alert area that is the same area as the receiver's own broadcast district and broadcast audio signal lines drawn from the receiver separately from the transmission lines; and a plurality of broadcast alarm devices arranged in each broadcast district and connected to the broadcast repeaters in the same broadcast district, wherein the plurality of fire detectors sharing a common alert area and the broadcast audio signal lines have the same trunk line and branch off from the trunk line for each broadcast district and are connected to each of the broadcast repeaters at the ends of the branches; and when a fire detector detects a fire, the receiver sends a control signal to the broadcast repeater connected to the transmission line via the transmission line to which the fire detector that detected the fire is connected. The system transmits a signal via a broadcast audio signal line, and the broadcast repeater amplifies the received broadcast audio signal based on the received control signal and transmits it to a broadcast announcement device located in the same broadcasting area. The broadcast announcement device then broadcasts based on the received broadcast audio signal. Therefore, the wiring between the receiver, which is integrated with the broadcast control panel, and the speakers functioning as broadcast announcement devices installed in each broadcasting area, for example, on each floor, consists of a broadcast audio signal line and a broadcast control line connecting the receiver to the broadcast repeater installed on each floor, and a speaker signal line connecting the repeater on each floor to the speakers installed on the same floor. By installing a transmission line repeater on each floor, the signal line cables connecting the broadcast control panel to each floor, which was previously required individually, can be reduced to just two signal line cables: a broadcast audio signal line connecting the transmission line repeaters installed on each floor in common, and a broadcast control line connecting them individually. This reduces the amount of wiring, thereby simplifying the equipment configuration and reducing costs. Here, the amount of wiring refers to the weight of the signal line cables installed.

[0012] Furthermore, the broadcast audio signal line between the broadcast control panel and the repeater transmits the audio signal before it is amplified by the repeater, so a thin signal line cable with a small current capacity can be used. This means that even when a broadcast control line is added, the amount of wiring can be further reduced.

[0013] In addition, the audio amplifiers (power amplifiers) that amplify the broadcast audio signals and supply them to the speakers are installed in transmission line repeaters installed on each floor, so there is no need to install multiple audio amplifiers (power amplifiers) in the receiver, which makes the receiver configuration simpler and more compact, and together with the reduced number of wires, the installation space can be significantly reduced.

[0014] Furthermore, the broadcast control panel is formed as an integrated panel with the receiver, which connects to the fire detector using a transmission line for at least part of the communication path, and at least part of the broadcast control line doubles as a transmission line. Therefore, by incorporating the functions of the broadcast control panel into the receiver of the disaster prevention equipment, it is possible to reduce the setup space, avoid duplicate displays in the event of a fire, and improve the operability of fire response and emergency broadcasts. Furthermore, it is possible to identify broadcast repeaters using a means of identifying terminals such as addresses on the receiver, eliminating the need for a control algorithm dedicated to broadcast repeaters. Furthermore, because the broadcast control line doubles as a transmission line, it is possible to reduce the number of wires.

[0015] Furthermore, when a fire detector detects a fire, the receiver receives a signal from the fire detector via the transmission line, so the transmission line is alive (normal), and communication between the receiver and the broadcast repeater via the same transmission line can be carried out reliably. [Brief explanation of the drawings]

[0016] [Figure 1] An explanatory diagram showing an embodiment according to the first invention of broadcasting equipment in which the receiver is provided with the functions of a broadcasting control panel. [Figure 2] An explanatory diagram showing the functional configuration of the receiver of Figure 1. [Figure 3] An explanatory diagram showing the functional configuration of the repeater in Figure 1. [Figure 4] An explanatory diagram showing an embodiment in which a repeater is installed every three floors. [Figure 5] An explanatory diagram showing the functional configuration of the repeater in Figure 4. [Figure 6] FIG. 2 is an explanatory diagram showing the functional configuration of a repeater according to a second aspect of the present invention; [Figure 7] An explanatory diagram showing the overview of a distributed system consisting of receivers and relay panels [Figure 8] An explanatory diagram showing an embodiment of a broadcasting facility in which a broadcast control panel is independently installed. [Figure 9] An explanatory diagram showing the functional configuration of the broadcast control panel of Figure 8. DETAILED DESCRIPTION OF THE INVENTION

[0017] [Broadcasting equipment] FIG. 1 is an explanatory diagram showing an embodiment according to a first aspect of the present invention of broadcasting equipment in which the receiver is provided with the functions of a broadcasting control panel.

[0018] (Basic Concept of the Embodiment) The broadcasting equipment of this embodiment is a disaster prevention equipment that monitors fires in a building 11 using analog fire detectors 22 connected to transmission lines 12-1 to 12-9 drawn from a receiver 10 equipped with the functions of a broadcast control panel to a predetermined alert system area, for example, for each floor. Repeaters 16 installed in a predetermined broadcasting area, for example, for each floor, are connected to the transmission lines 12 and broadcast audio signal lines 14 from the receiver 10, and speakers 20 functioning as broadcast alarm devices installed on each floor are connected to speaker signal lines (broadcast audio signal lines) 18 from the repeaters 16.

[0019] In a more desirable configuration, the predetermined alert system area and the predetermined broadcasting area are the same, and a repeater 16 is connected to each of the transmission lines 12-1 to 12-9. Also, the broadcast audio signal line 14 has a trunk line before it branches off for each floor, and a repeater 16 is connected to each branch point from the trunk line. This eliminates the need to prepare a transmission line for emergency broadcasts, further achieving the effect of wire saving.

[0020] When the receiver 10, which is provided with the function of a broadcast control panel, makes a predetermined determination regarding the occurrence of a fire, it transmits a predetermined emergency broadcast audio signal to the repeater 16 via the broadcast audio signal line 14, and also transmits start and predetermined broadcast control instruction signals (broadcast control commands) to the repeater 16 via the transmission lines 12-1 to 12-9 which function as broadcast control lines. The repeater 16 amplifies the broadcast audio signal sent via the broadcast audio signal line 14 based on the broadcast control instruction signal received from the receiver 10, and outputs the amplified broadcast audio signal to the speaker signal line 18 to make an emergency broadcast from the speaker 20.

[0021] For this reason, the wiring between the receiver 10 and the speakers 20 installed in each broadcasting district, for example on each floor, consists of the transmission lines (broadcast control lines) 12-1 to 12-9 required from the receiver 10 as fire alarm equipment, the trunk line of the broadcast audio signal line 14 that commonly connects the repeaters 16 installed on each floor, the branch lines of the broadcast audio signal line 14 that branch off from the trunk line and connect to each repeater 16, and the speaker signal line 18 that connects the repeaters 16 on each floor to the speakers 20 installed on the same floor.By installing repeaters 16 on each floor, the signal line cables that previously connected the receiver 10 to each floor were reduced to just two signal line cables: the broadcast audio signal line (trunk and branch line) 14 that commonly connects the repeaters 16 installed on each floor, and each of the transmission lines (broadcast control lines) 12-1 to 12-9 that connect individually.This reduces the amount of wiring, thereby simplifying the equipment configuration and enabling cost reductions.

[0022] Furthermore, since a transmission line is required as part of the fire alarm system from the receiver 10 to the repeater 16 installed on each floor, when considering adding broadcasting equipment, only the broadcast audio signal line is added as the trunk line. Here, the amount of wiring means, for example, the length, number or weight of the signal line cables laid out.

[0023] Furthermore, the broadcast audio signal line between the receiver 10 and the repeater 16 transmits audio signals before they are amplified by the repeater 16, so a thin signal line cable with a small allowable current value can be used, further reducing the amount of wiring required.

[0024] Furthermore, the audio amplifiers that amplify the broadcast audio signals and supply them to the speakers are provided in the repeaters 16 installed on each floor, and there is no need to provide a large number of audio amplifiers on the receiver 10 side, so even if the receiver 10 is provided with an emergency broadcast function, the configuration can be simplified and made smaller, and together with the reduction in the amount of wiring, the installation space on the receiver 10 side can be significantly reduced. This will be explained in detail below.

[0025] [First embodiment of broadcasting equipment: First invention] (Outline of disaster prevention equipment) As shown in Fig. 1, the building 11 to be monitored is, for example, a nine-story building, and a receiver 10 is installed in a disaster prevention monitoring center or the like on the first floor. Transmission lines 12-1 to 12-9 are drawn out from the receiver 10, separated for each floor, and analog fire detectors 22 installed on each floor are connected to monitor for fires.

[0026] Furthermore, a repeater 16 is installed on each floor that is part of the broadcasting area. A broadcasting audio signal line 14 is drawn out from the receiver 10, and the repeater 16 installed on each floor is connected to transmission lines 12-1 to 12-9 that function as broadcasting control lines, and to the broadcasting audio signal line 14, which is made up of a trunk line and branch lines. Note that the broadcasting area is not limited to a floor, and the same floor may be divided into multiple broadcasting areas, or multiple floors may be combined into one broadcasting area; this is optional.

[0027] A speaker signal line 18 is drawn from the repeater 16, and speakers 20 installed on the same floor are commonly (in parallel) connected to it. Based on a predetermined broadcast control command that functions as a broadcast instruction signal from the receiver 10 that has detected a fire, the repeater 16 amplifies the broadcast audio signals of the fire alarm sent from the receiver 10 and the emergency broadcast for evacuation guidance that functions as a predetermined auxiliary broadcast, and outputs the emergency broadcast from the speaker 20.

[0028] Here, the broadcast control commands transmitted from the receiver 10 to the repeater 16 include at least a broadcast start command and a broadcast stop command. Emergency broadcasts are divided into detector alarm broadcasts, fire broadcasts, and non-fire broadcasts depending on their content.

[0029] Furthermore, since the broadcast audio signal sent via the broadcast audio signal line 14 is an audio signal of, for example, 0 to 5 volts before being amplified by the repeater 16, the allowable current value of the signal line cable used for the broadcast audio signal line 14 may be, for example, 1 ampere or less, and a thin signal line cable may be used.

[0030] Furthermore, since the transmission lines 12-1 to 12-9 serially transmit various data signals using voltage pulses of 0 to 30 volts or current pulses of 1 ampere or less, the current capacity of the signal line cables used for this can be, for example, 1 ampere or less, and thin signal line cables can be used.

[0031] On the other hand, the speaker signal line 18 from the repeater 16 transmits an audio signal, for example 0 to 100 volts, amplified by the repeater 16 as a broadcast audio signal, and therefore requires a correspondingly large allowable current value and voltage resistance characteristics, and therefore uses a thicker signal line cable than the transmission lines 12-1 to 12-9 and the broadcast audio signal line 14.

[0032] (Receiver functional configuration) Fig. 2 is an explanatory diagram showing the functional configuration of the receiver in Fig. 1. As shown in Fig. 2, this embodiment takes an R-type (Record-type) disaster prevention facility as an example, and transmission lines 12-1, 12-2, ... 12-9 are drawn from an R-type receiver 10 to a security area, for example, divided into systems for each floor. In the following description, when there is no need to distinguish between the transmission lines 12-1 to 12-9, they may be referred to as transmission line 12.

[0033] A plurality of analog fire detectors 22 each having a transmission function and a unique address are connected to the transmission line 12-1, and an on-off fire detector 26 and a transmitter 27 are connected to a detector line 25 drawn from a fire alarm repeater 24 each having a transmission function and a unique address.

[0034] In addition to the connection of multiple analog fire detectors 22, the transmission line 12-2 is also connected to an addressable transmitter 28 having a transmission function and a unique address set thereto. Furthermore, smoke control and exhaust equipment is connected to other transmission lines via repeaters having a transmission function and a unique address set thereto, but this is not shown in the figure.

[0035] The transmission lines 12-1 to 12-9 are connected to a repeater 16 installed on each floor, and each repeater 16 is assigned a unique address and has a transmission function.

[0036] 1, a broadcast audio signal line 14 is drawn from the receiver 10 in the floor direction (height direction) of the building 11, and a repeater 16 is commonly connected to the broadcast audio signal line 14.

[0037] Here, the maximum number of addresses that can be set for terminal devices such as analog fire detectors 22 and fire alarm repeaters 24 connected to transmission line 12-1 is, for example, 255, and transmission line 12-1 can be connected to a maximum of 255 terminal devices including analog fire detectors 22. The same applies to the other transmission lines 12-2 to 12-9.

[0038] The receiver 10 is provided with a main CPU 30 and multiple sub-CPU boards 32-1 to 32-9, and the sub-CPU boards 32-1 to 32-9 are provided with sub-CPUs 34-1 to 34-9 and transmission units 36-1 to 36-9. The data transmission speed of the transmission units 36-1 to 36-9 is, for example, 1200 bps or 2400 bps. The main CPU 30 and sub-CPU 34 are connected by a serial transfer bus 35 and transmit and receive data to and from each other.

[0039] A display 38 with a touch panel using a liquid crystal display panel or the like is connected to the main CPU 30, and the display 38 displays information necessary for fire monitoring by the receiver 10 according to the current status of the receiver 10. The information necessary for fire monitoring by the display 38 includes all information such as events that occur during normal monitoring and in the event of a fire, information necessary for operation management, information necessary for response operations, etc., as well as information necessary for operation management and operation of the receiver 10 in maintenance and inspection mode.

[0040] In addition, the display 38 displays an emergency broadcast screen showing information necessary for operating emergency broadcasts in the event of a fire, and broadcast control and various settings can be made by operating the screen.

[0041] In addition to a display 38 that functions as a display unit for the main CPU 30, a display unit 40 using indicator lights such as LEDs is provided. The display unit 40 is provided with a fire indicator light, a gas leak indicator light, and the like.

[0042] An operation unit 42 is connected to the main CPU 30, and is provided with various switches required for fire monitoring, such as a fire determination switch, a main sound stop switch, and a local sound pause switch. Furthermore, an audio alarm unit 44 equipped with a speaker, and an alarm transfer unit 46 are connected to the main CPU 30.

[0043] The main CPU 30 is provided with a reception control unit 50 and a broadcast control unit 60 that function by executing a program.

[0044] Furthermore, in order to realize the function of a broadcast control panel, the receiver 10 is provided with a broadcast sound source unit 56, an announcement microphone 54, an emergency broadcast speaker 52, and a broadcast audio signal transmission / reception unit 58, the details of which will be explained later.

[0045] (Fire monitoring control of receiver) As shown in Figure 2, taking the sub-CPU 34-1 on the sub-CPU board 32-1 as an example, it performs fire monitoring control by instructing the transmitter 36-1 to send and receive signals to and from the analog fire detector 22 in accordance with a predetermined communication protocol. Downstream signals from the transmitter 36-1 to the analog fire detector 22 are transmitted in voltage mode. These voltage-mode signals are transmitted as voltage pulses that change the line voltage of the transmission line 12-1 between, for example, 18 volts and 30 volts.

[0046] On the other hand, the upstream signal from the analog fire detector 22 to the transmitter 36-1 is transmitted in current mode. In this current mode, a signal current flows through the transmission line 12-1 at the timing of bit 1 of the transmission data, and the upstream signal is transmitted to the receiver 10 as a so-called current pulse train.

[0047] During normal monitoring, the sub-CPU 34-1 performs fire monitoring control by periodically instructing the transmitter 36-1 to transmit a broadcast batch AD conversion signal containing a batch AD conversion command. The analog fire detectors 22 that receive this batch AD conversion signal detect and store the smoke density or temperature as sensor data. The sub-CPU 34-1 then transmits a call signal containing a polling command that sequentially specifies the terminal addresses.

[0048] When the analog fire detector 22 receives a call signal with an address that matches its own address, it transmits a response signal including the sensor data it is holding at that time to the transmission unit 36-1. Also, when the smoke density or temperature exceeds a predetermined fire warning level, the analog fire detector 22 transmits a fire interrupt signal to the transmission unit 36-1 of the receiver 10.

[0049] When the sub-CPU 34-1 receives a fire interrupt signal via the transmission unit 36-1, it sends a group search command signal to identify the group that includes the analog fire detector 22 that has detected the fire, and then sends an intra-group search command signal to identify the address of the analog fire detector 22 that has detected the fire, collects analog data from the sensor in a concentrated manner, and sends it to the main CPU 30 via the serial transfer bus 35.

[0050] The main CPU 30 compares the analog data received from the sub-CPU 34-1 with a predetermined fire determination level, and when the analog data reaches the fire determination level, it determines that there is a fire, turns on the fire representative light on the display unit 40, outputs a predetermined main acoustic alarm indicating a fire from the speaker of the acoustic alarm unit 44, displays fire alarm information including the location of the fire on the display 38 based on the address of the sensor where the fire was detected, and further outputs a fire alarm signal to the outside via the alarm transfer unit 46 to perform predetermined alarm transfer control, etc.

[0051] The fire monitoring control by the sub-CPU 34-2 and the transmission unit 36-2 provided on the sub-CPU board 32-2 is also the same as in the case of the sub-CPU board 32-1 described above.

[0052] [Emergency broadcasting equipment function] (Receiver broadcast control panel functions and configuration) Corresponding to the broadcast control unit 60 provided in the main CPU 30 of the receiver 10 of FIG. 2, the receiver 10 is provided with a broadcast sound source unit 56, an announcement microphone 54, an emergency broadcast speaker 52, and a broadcast audio signal transmitting / receiving unit 58.

[0053] The broadcast sound source unit 56 stores broadcast data (broadcast message information) for emergency broadcasts including detector alarm broadcasts, fire broadcasts, non-fire broadcasts, emergency broadcasts for earthquakes, thefts, etc., training broadcasts, etc., and reads out the broadcast data instructed by the broadcast control unit 60, converts it into an analog broadcast audio signal (audio signal), and outputs it to the broadcast audio signal transmission / reception unit 58.

[0054] The broadcast audio signal transmitting / receiving unit 58 receives a broadcast audio signal converted from the broadcast data of the broadcast sound source unit 56 and outputs the broadcast audio signal to the repeater 16 installed on each floor of the broadcast area via the broadcast audio signal line 14. As shown in another embodiment, the broadcast audio signal transmitting / receiving unit 58 receives a broadcast monitor signal indicating an emergency broadcast in the broadcast area sent from the repeater 16 installed in the broadcast area, and outputs it to the emergency broadcast speaker 52.

[0055] An announcement microphone 54 is provided on the face of the receiver 10, and allows a disaster prevention manager or the like to make broadcast inputs instructing evacuation guidance, etc. as necessary. The emergency broadcast speaker 52 outputs emergency broadcasts from the receiver 10, and, as shown in another embodiment, receives a broadcast monitor signal indicating emergency broadcasts in the broadcast area sent from the repeater 16 and outputs the monitored emergency broadcast.

[0056] (Emergency broadcast repeater) Figure 3 is an explanatory diagram showing the functional configuration of the repeater of Figure 1. As shown in Figure 3, the emergency broadcast repeater 16 is provided with a CPU 62, a transmission unit 64, an audio amplifier unit 66, a power supply unit 68, a battery 70, a power supply test unit 72, a display unit 74, a broadcast test switch 76, a monitor speaker 78, and a monitor jack 80. The CPU 62 is also provided with the function of a repeater control unit 65 that is realized by executing a program, and is assigned a unique address.

[0057] The audio amplifier 66 receives a broadcast audio signal transmitted from the receiver 10 via the broadcast audio signal line 14, operates under control instructions from a repeater control unit 65 provided in the CPU 62, amplifies the received broadcast audio signal so that an output of a predetermined sound pressure or more is obtained from the speaker 20, and outputs the amplified broadcast audio signal to the speaker signal line 18. Note that, under normal circumstances when no broadcast audio signal is received, the audio amplifier 66 is inactive, for example, by stopping the power supply or by suppressing the amplification gain, and enters an active state upon receiving a control signal from the repeater control unit 65. Note that the audio amplifier 66 may be kept in an active state at all times, eliminating the need for control by the repeater control unit 65.

[0058] Since the audio amplifier 66 has a large number of speakers 20 connected to the speaker signal line 18, a high-impedance power amplifier is used to reduce the output current value, and by using a large power amplifier of over 50 watts, sound pressures of 92 dB / 1 m, 87 dB / 1 m, and 82 dB / 1 m or more corresponding to L, M, and S classes are ensured.

[0059] 2 via the transmission line 12. The transmission unit 64 receives broadcast control commands and broadcast data transmitted from the receiver 10 in voltage mode and outputs them to the CPU 62. In addition, based on instructions from the CPU 62, the transmission unit 64 transmits response commands and data to the receiver 10 in current mode in response to the received broadcast control commands.

[0060] The repeater control unit 65 provided in the CPU 62 controls the operation of the audio amplifier unit 66 based on the broadcast control command received via the transmission unit 64. When the repeater control unit 65 receives a broadcast start command specifying its own address from the receiver 10, it controls the operation of the audio amplifier unit 66, amplifying the broadcast audio signal sent via the broadcast audio signal line 14 at that time and outputting it to the speaker signal line 18. Furthermore, when the repeater control unit 65 receives a broadcast stop command specifying its own address from the receiver 10 after receiving the broadcast start command, it controls the operation of the audio amplifier unit 66 to stop.

[0061] The power supply unit 68 receives the 100V AC commercial AC power supply obtained at the installation location of the repeater 16, converts it into DC power, and supplies a predetermined power supply voltage to each part of the repeater. The power supply unit 68 is also provided with a battery 70 as a backup power source. The power supply unit 68 normally charges the battery 70 when the 100V AC commercial AC power supply is available, and automatically switches to power supply from the battery 70 in the event of a power outage of the 100V AC commercial AC power supply, guaranteeing an operating time of, for example, 10 minutes or more.

[0062] The power supply test unit 72 operates when the repeater control unit 65 receives a power supply test command from the receiver 10, performs a predetermined test on the power supply unit 68, obtains a test result of normal or abnormal and outputs it to the repeater control unit 65, the repeater control unit 65 instructs the transmission unit 64 to transmit the test result as a response command to the power supply test command to the receiver 10, and if the test result is abnormal, the receiver 10 notifies the user of a power supply abnormality in the repeater 16, for example, by displaying it on the display 38 shown in FIG. 2. The transmission of the power supply test command from the receiver 10 is performed periodically, for example, once a day, on a 24-hour cycle. The predetermined test on the power supply unit 68 is a concept that includes, for example, a test to check the battery status, such as the amount of charge stored in the battery.

[0063] The broadcast test switch 76 is used to check that emergency broadcasts are being made normally when inspecting the repeater 16. When the broadcast test switch 76 is operated during inspection, the repeater control unit 65 determines that a broadcast test operation has been performed and instructs the transmission unit 64 to send a broadcast test command including its own address to the receiver 10. When the broadcast control unit 60 of the receiver 10 shown in Figure 2 receives the broadcast test command from the repeater 16, it reads out specified broadcast data from the broadcast sound source unit 56, converts it into a broadcast audio signal, and outputs it from the broadcast audio signal transmitting / receiving unit 58 to the broadcast audio signal line 14 for sending to the repeater 16.

[0064] At this time, the audio amplifier 66 is set to a predetermined amplification gain that is sufficiently smaller than that used for emergency broadcasts in order to sufficiently reduce the volume from the speaker 20, and the test broadcast is output from the monitor speaker 78 to be confirmed, or the test broadcast is confirmed by connecting an earphone to the monitor jack 80. Note that when an earphone is connected to the monitor jack 80, the monitor speaker 78 is disconnected.

[0065] Furthermore, during broadcast testing, the amplification gain of the audio amplifier 66 is lowered to reduce the volume from the speaker 20, but instead of this, a switch circuit may be provided before the connection point between the monitor speaker 78 and the monitor jack 80 for the output line of the audio amplifier 66, and the switch circuit may be turned off during broadcast testing to prevent broadcast sound from being output from the speaker 20.

[0066] In addition, when an emergency broadcast is made in response to a fire detector or other alarm during a broadcast test, the broadcast sound is output from the speaker 20, and the volume from the earphones connected to the monitor jack 80 or the monitor speaker 78 may be automatically adjusted to a volume at which the broadcast sound can be heard.

[0067] [Receiver emergency broadcast control operation] (Detector alarm broadcast) When a fire occurs and the reception control unit 50 of the receiver 10 determines that the detector has been activated based on a fire signal from the analog fire detector 22 shown in Figure 2, a fire alarm screen is displayed on the display 38, showing the area where the fire occurred, for example, "2nd floor, south area, time of occurrence 12:07", as the first report of the fire occurrence.

[0068] In response to this fire alarm display, the broadcast control unit 60 transmits a broadcast start command specifying the address of the repeater 16 on the second floor where the fire occurred to the transmission line 12-2 connected to the repeater 16, and at the same time reads out the broadcast data for the detector alarm broadcast stored in the broadcast sound source unit 56, converts it into a detector alarm broadcast audio signal, outputs it to the broadcast audio signal line 14 and transmits it to the repeater 16.

[0069] For this reason, the repeater control unit 65 of the repeater 16 shown in Figure 3, which is installed on the second floor where the fire will break out, receives a broadcast start command specifying its own address and operates the audio amplifier unit 66, amplifies the detector alarm broadcast audio signal sent from the receiver 10 via the broadcast audio signal line 14, and outputs it to the speaker signal line 18, and a detector alarm broadcast is output from the speaker 20 installed on the second floor stating, for example, "The fire alarm in the south area on the second floor has just been activated. We are checking it, so please pay attention to the next broadcast."

[0070] (Fire broadcast) In response to the first report indicating a fire on the receiver 10 in Figure 2, the disaster prevention manager will check the site, and if there is a fire, he will operate the fire determination switch on the receiver 10, which will then cancel the local sound alarm, perform interlocking control, and control the transfer of the alarm.

[0071] In addition, when the disaster prevention manager uses the emergency broadcast screen displayed on the display 38 to select, for example, the floor immediately above, 3F, and the floor immediately below, 1F, the broadcast control unit 60 outputs broadcast start commands that sequentially specify the addresses of the repeaters 16 on the floor immediately above, 3F, and the floor immediately below, 1F, to the transmission lines 12-1 and 12-3, and at the same time reads out fire broadcast data from the broadcast sound source unit 56, converts it into a fire broadcast audio signal, outputs it to the broadcast audio signal line 14, and transmits it to the repeater 16.

[0072] The repeater control unit 65 of the repeater 16 installed on the 3rd floor immediately above and the 1st floor immediately below the 2nd floor where the fire started receives a broadcast start command specifying its own address and operates the audio amplifier unit 66, amplifying the fire broadcast audio signal sent from the receiver 10 via the broadcast audio signal line 14 and outputting it to the speaker signal line 18. Also, since the audio amplifier unit 66 of the repeater 16 on the 2nd floor where the fire started is already operating, a fire broadcast message stating, for example, "There is a fire. There is a fire. A fire has broken out in the south area of ​​the 2nd floor. Please remain calm and evacuate." is output from the speakers 20 installed on the 2nd floor where the fire started, the 3rd floor immediately above, and the 1st floor immediately below.

[0073] Furthermore, if the fire spreads further during the fire broadcast, the disaster prevention manager can use the emergency broadcast screen displayed on the display 38 to perform a simultaneous broadcast operation, and the broadcast control unit 60 will output a broadcast start command specifying the repeaters 16 on all floors to the transmission lines 12-1 to 12-9. The repeater control units 65 of the repeaters 16 installed on floors other than the 2nd floor where the fire occurred, the 3rd floor directly above, and the 1st floor directly below will receive the broadcast start command and operate the audio amplifier units 66, amplify the fire broadcast audio signal sent from the receiver 10 via the broadcast audio signal line 14, and output it to the speaker signal line 18, resulting in a simultaneous fire broadcast being output from the speakers 20 on all floors.

[0074] (Non-fire broadcast) When the receiver 10 first reports that a fire has occurred, the disaster prevention manager checks the scene, and if there is no fire, he operates the non-fire broadcast switch on the emergency broadcast screen.Based on this, the broadcast control unit 60 reads the non-fire broadcast data from the broadcast sound source unit 56, converts it into a non-fire broadcast audio signal, outputs it to the broadcast audio signal line 14, and sends it to the repeater 16.

[0075] For this reason, the audio amplifier unit 66 of the repeater 16 shown in Figure 3, which is installed on the second floor where the fire occurs, amplifies the non-fire broadcast audio signal sent from the receiver 10 via the broadcast audio signal line 14 and outputs it to the speaker signal line 18, and a non-fire broadcast message stating, for example, "We have checked the operation of the fire alarm and found no problems," is output from the speaker 20 installed on the second floor.

[0076] Furthermore, after the disaster prevention manager has made a non-fire broadcast, if he operates the non-fire broadcast switch on the emergency broadcast screen, the broadcast control unit 60 will output a broadcast stop command specifying the repeaters 16 on all floors to the transmission lines 12-1 to 12-9, and as a result, the repeater control unit 65 of the repeater 16 installed on the floor currently broadcasting will stop the operation of the audio amplifier unit 66, ending the emergency broadcast. Ending the emergency broadcast with this broadcast stop command will also be done in the same way if it is confirmed that the fire has been extinguished after the fire broadcast.

[0077] [An embodiment of broadcasting equipment in which a repeater is installed for each of a plurality of broadcasting areas] FIG. 4 is an explanatory diagram showing an embodiment in which a repeater is provided every three floors of a building, and FIG. 5 is an explanatory diagram showing the functional configuration of the repeater of FIG.

[0078] As shown in Fig. 4, in the disaster prevention system of this embodiment, a repeater 16 is provided for every three floors of a building 11, for example, for the first to third floors (1F to 3F) as shown in the figure, and speaker signal lines 18-1 to 18-3 are drawn from the repeater 16 separately to the first, second, and third floors, and speakers 20 installed on each floor are connected to them. The transmission line 12 connected to the repeater 16 may be any one of the first to third floors, and for example, transmission line 12-2 is connected. The rest of the configuration is the same as the embodiment of Fig. 1. The configuration of the receiver 10 is also basically the same as that shown in Fig. 2, except that information specifying the floor is added to the broadcast control command.

[0079] 5, the repeater 16 in Fig. 4 is provided with a line selection unit 86 on the output side of the audio amplifier unit 66, and speaker signal lines 18-1 to 18-3 are drawn out from the line selection unit 86 to the speaker 20 side. The line selection unit 86 performs a selection operation to output the broadcast audio signal from the audio amplifier unit 66 to any one, any two, or all of the speaker signal lines 18-1 to 18-3 in response to a control instruction from the repeater control unit 65 provided in the CPU 62.

[0080] For example, the line selection unit 86 is realized by branching the input line from the audio amplifier unit 66 into three output lines and providing each of the branched output lines with a switch circuit that turns on and off in response to instructions from the repeater control unit 65.

[0081] In the event of a fire breaking out in building 11 in Fig. 4, broadcast control unit 60 of receiver 10 shown in Fig. 2 transmits a broadcast start command including the repeater address and information specifying the broadcast floor (1F 2F 3F) to repeaters 16 installed every three floors. Here, if the broadcast floor designation is bit 1 and no designation is bit 0, for example, if a fire breaks out on the second floor of a building and an emergency broadcast is to be made on the second floor, the floor where the fire broke out, broadcast control unit 60 of receiver 10 will output a broadcast start command specifying the address of repeater 16 on the second floor and the broadcast floor designation information (1F 2F 3F) as (0 1 0) to transmission line 12-2 and send it to repeater 16.

[0082] The repeater control unit 65 of the repeater 16 shown in Figure 5 extracts the broadcast floor designation information (0 1 0) from the broadcast control command specifying its own address received via the transmission unit 64, recognizes that the broadcast floor is the 2nd floor, operates the audio amplifier unit 66, selects the speaker signal line 18-2 corresponding to the broadcast floor 2nd floor specified by the line selection unit 86, outputs the broadcast audio signal from the audio amplifier unit 66 to the selected speaker signal line 18-2, and outputs an emergency broadcast from the speaker 20 on the 2nd floor, which is the floor where the fire occurred.

[0083] Furthermore, when an emergency broadcast is made from 2F, the floor where the fire occurred, 3F, the floor directly above, and 1F, the floor directly below, the broadcast floor designation information (1F 2F 3F) in the broadcast start command is sent as (1 1 1), and based on this broadcast start command, the repeater 16 shown in Figure 5 outputs the broadcast audio signal from the audio amplifier unit 66 to all of the speaker signal lines 18-1 to 18-3 via the line selection unit 86, causing the emergency broadcast to be output from the speakers 20 on 2F, the floor where the fire occurred, 3F, the floor directly above, and 1F, the floor directly below.

[0084] In addition, if the floor where the fire broke out is the 3rd floor, the floor directly above is the 4th floor, and the floor directly below is the 2nd floor, a broadcast start command is sent to the repeaters 16 installed for the 1st to 3rd floors, with the information indicating the broadcast floor (1F 2F 3F) set as (0 1 1), and a broadcast start command is sent to another repeater 16 installed for the 4th to 6th floors, with the information indicating the broadcast floor (4F 5F 6F) set as (1 0 0), causing an emergency broadcast to be output from speakers 20 on the 3rd floor where the fire broke out, the 4th floor directly above, and the 2nd floor directly below.

[0085] The number of floors (number of broadcasting areas) on which repeaters 16 are installed is optional, but since the floor where the fire occurred, the floor directly above, and the floor directly below will all be subject to emergency broadcasts at the same time, it is desirable to install a repeater 16 every three floors.

[0086] [Embodiment of broadcasting equipment that stores and plays back broadcast data in a repeater: Second invention] (storing and playing back broadcast data) Fig. 6 is an explanatory diagram showing the functional configuration of a repeater related to the broadcasting equipment of the second invention. As shown in Fig. 6, this embodiment is characterized in that a broadcast data storage unit 88 is provided in the memory of the CPU 62 of the repeater 16.

[0087] The receiver 10 corresponding to this embodiment is the same as the embodiment of Figure 2, but when the equipment is started up, the broadcast control unit 60 of the receiver 10 transmits a broadcast audio signal write command to the repeater 16 via transmission lines 12-1 to 12-9, and reads out all broadcast data stored in the broadcast sound source unit 56, converts it into an analog broadcast audio signal, and outputs it to the broadcast audio signal line 14.In response to this, based on the broadcast audio signal write command from the receiver 10, the repeater control unit 65 of the repeater 16 receives the broadcast audio signal from the broadcast audio signal line 14 at that time using the broadcast audio signal transmission / reception unit 84, reads it into the CPU 62, converts it into broadcast data, and stores it in the broadcast data memory unit 88.

[0088] The control operation during operation after the broadcast data has been stored in the repeater 16 differs in that the broadcast control unit 60 of the receiver 10 sends broadcast control commands but does not send broadcast audio signals, but instead reads broadcast data from the broadcast data storage unit 88 based on the broadcast control commands, converts it into broadcast audio signals, and outputs them to the audio amplifier unit 66.However, the other configurations and functions are the same as those of the repeater 16 of the first embodiment in Figure 2.

[0089] In this way, in this embodiment, broadcast data is stored in the repeater 16 in advance, and when a fire is determined to have occurred, a broadcast control command is sent to the repeater 16, which reads out the broadcast data, converts it into a broadcast audio signal, and outputs it from the speaker 20. This eliminates the need to send a broadcast audio signal from the receiver 10, and allows emergency broadcasts to be easily made on the repeater 16 side.

[0090] In addition, it is possible to set different broadcast types by broadcast control commands for each repeater 16, allowing different types of emergency broadcasts to be made for each broadcast area. For example, it is possible to set a broadcast encouraging evacuation for the floor where the fire has occurred and the floors above and below it, and a broadcast indicating the occurrence of a fire for other floors, thereby enabling evacuation guidance according to the degree of fire danger.

[0091] In addition, in order to store broadcast data for the repeater 16, in addition to transmitting and storing the emergency broadcast audio signal from the receiver 10, the audio data may be stored in a removable non-volatile memory, which may be attached to the repeater 16 for use.

[0092] Furthermore, the broadcast data may be stored in the repeater 16 not only when the equipment is set up, but also during normal operation in response to a write command from the receiver 10 to the repeater 16.

[0093] (broadcast monitor on repeater) Furthermore, the repeater 16 of this embodiment is provided with a function of reproducing a broadcast audio signal based on the broadcast data stored in the broadcast data storage unit 88 and outputting the audio from a monitor speaker and / or a monitor jack for monitoring.

[0094] [Distributed system broadcasting equipment] Fig. 7 is an explanatory diagram showing an overview of a distributed system made up of receivers and a relay panel. When the facility to be monitored is large-scale, for example, being divided into multiple buildings, as shown in Fig. 7, a relay panel 100 is installed for each building, for example, with a receiver 10 installed in a disaster prevention center, and the receivers 10 and the relay panel 100 are connected for communication via a network line 104 such as Ethernet (registered trademark).

[0095] Receiver 10 is the same as that shown in Fig. 2, whereas relay panel 100 is configured such that operation and display functions including display 38, display unit 40, operation unit 42 and acoustic alarm unit 44, as well as broadcast sound source unit 56, emergency broadcast speaker 52 and announcement microphone 54 required for emergency broadcasts, are removed from receiver 10 in Fig. 2, and other than that, it is basically the same as receiver 10, and terminal equipment including analog fire detectors 22 are connected to transmission line 102 drawn out into the alert area in the same way as receiver 10. Also, corresponding to reception control unit 50 and broadcast control unit 60 of receiver 10, relay panel 100 is provided with the functions of relay panel control unit 106 and broadcast control unit 108.

[0096] When the relay panel control unit 106 of the relay panel 100 determines that there is a fire based on the detection data of the analog fire detector 22, it transmits fire occurrence information including information indicating the area where the fire occurred to the receiver 10 via the network line 104, and the receiver 10 performs a fire alarm operation including displaying an alarm on the screen of the display 38.

[0097] At this time, the broadcast control unit 60 of the receiver 10 reads out the broadcast data necessary for the fire broadcast and transmits it to the relay panel 100 that has determined the fire via the network line 104. The broadcast control unit 108 of the relay panel 100 that has determined the fire holds the broadcast data transmitted from the receiver 10 and transmits a broadcast start command specifying the relay address of the floor on which the fire occurred to the transmission line 102-n, and also converts the held audio data into a broadcast audio signal and transmits it to the broadcast audio signal line 14.

[0098] A repeater 16 installed on the floor where the fire has occurred receives a broadcast start command from a relay panel 100 with its own address specified, amplifies the broadcast audio signal sent at that time through a broadcast audio signal line 14, outputs it to a speaker signal line 18, and outputs an emergency broadcast from a speaker 20.

[0099] In this embodiment, the configurations and functions of the broadcast control unit 60 of the receiver 10, the broadcast control unit 108 of the relay panel 100, and the relay 16 are the same as those shown in the embodiment of FIGS.

[0100] [Broadcasting equipment with an independent broadcast control panel] (Broadcasting equipment overview) Fig. 8 is an explanatory diagram showing an embodiment of broadcasting equipment with a separate broadcast control panel. The broadcasting equipment shown in Fig. 8 is an independent broadcasting equipment that has the function of the emergency broadcasting equipment provided in the disaster prevention equipment shown in Fig. 1, and corresponds to the embodiment of Fig. 1 in which the function of the fire alarm equipment has been removed to create a broadcasting equipment.

[0101] As shown in Fig. 8, in the broadcasting equipment of this embodiment, the building 11 to be broadcasted to is, for example, a nine-story building, and a broadcast control panel 110 is installed in a disaster prevention monitoring center or the like on the first floor together with a fire alarm equipment receiver 10. In addition, a broadcast repeater 16 is installed on each floor of the building 11.

[0102] A transmission line 12 and a broadcast audio signal line 14 are drawn from the broadcast control panel 110 toward the floors of the building 11, and a repeater 16 installed on each floor is connected in common (in parallel) to the transmission line 12 and the broadcast audio signal line 14. A speaker signal line 18 is drawn from the repeater 16 installed on each floor, and speakers 20 installed on the same floor are connected in common (in parallel).

[0103] When the broadcast control panel 110 receives a fire alarm signal including information indicating the area where the fire has occurred from the receiver 10 of the fire alarm equipment, it outputs a broadcast control command specifying a predetermined repeater address including at least the repeater 16 on the floor where the fire has occurred to the transmission line 12, and also outputs a broadcast audio signal of an emergency broadcast for evacuation guidance that functions as a fire alarm and a predetermined auxiliary broadcast to the broadcast audio signal line 14.

[0104] Based on a predetermined broadcast control command from the broadcast control panel 110, the repeater 16 amplifies the broadcast audio signal of the emergency broadcast sent from the broadcast control panel 110 and outputs the emergency broadcast from the speaker 20.

[0105] Here, the broadcast control commands transmitted to the repeater 16 from the broadcast audio signals of the fire alarm and the emergency broadcast for evacuation guidance that functions as a predetermined auxiliary broadcast include at least a broadcast start command and a broadcast stop command.

[0106] (broadcast control panel) Figure 9 is an explanatory diagram showing the functional configuration of the broadcast control panel of Figure 8. As shown in Figure 9, the broadcast control panel 110 is provided with a main CPU 30 and a sub-CPU board 32, and the sub-CPU board 32 is provided with a sub-CPU 34 and a transmission unit 36. The main CPU 30 and the sub-CPU 34 are connected by a serial transfer bus, and send and receive data to and from each other. The main CPU 30 is provided with the functions of a broadcast control unit 60, which is realized by executing a program.

[0107] A display 38 with a touch panel using an LCD panel or the like is connected to the main CPU 30. The display 38 displays information necessary for operating emergency broadcasts, and broadcast control and various settings can be made by operating the screen.

[0108] In addition to the display 38 that functions as a display unit for the main CPU 30, a display unit 112 equipped with various indicator lights required for operating the emergency broadcast is provided. An operation unit 114 is also connected to the main CPU 30, and the operation unit 114 is provided with various switches required for operating the emergency broadcast.

[0109] Furthermore, the main CPU 30 is provided with a broadcast sound source unit 56, an announcement microphone 54, an emergency broadcast speaker 52, a broadcast audio signal transmitting / receiving unit 58, and a message transfer receiving unit 116.

[0110] The sub-CPU board 32 performs broadcast control by instructing the transmission unit 36 ​​to send and receive signals to and from the repeater 16 in accordance with a predetermined communication protocol. Downstream signals from the transmission unit 36 ​​to the repeater 16 are transmitted in voltage mode. On the other hand, upstream signals from the repeater 16 to the transmission unit 36 ​​are transmitted in current mode.

[0111] The broadcast sound source unit 56 stores broadcast data (broadcast message information) for emergency broadcasts including detector alarm broadcasts, fire broadcasts, non-fire broadcasts, emergency broadcasts for earthquakes, thefts, etc., training broadcasts, etc., and reads out the broadcast data instructed by the broadcast control unit 60, converts it into an analog broadcast audio signal, and outputs it to the broadcast audio signal transmission / reception unit 58.

[0112] The broadcast audio signal transmitting / receiving unit 58 inputs the broadcast audio signal converted from the broadcast data of the broadcast sound source unit 56, and transmits the broadcast audio signal via the broadcast audio signal line 14 to the repeater 16 installed on each floor of the broadcast area.

[0113] The announcement microphone 54 is provided on the face of the broadcast control panel 110, and allows a disaster prevention manager or the like to make broadcast inputs to instruct evacuation guidance, etc. as necessary. The emergency broadcast speaker 52 outputs emergency broadcasts made from the broadcast control panel 110.

[0114] (Repeater) The repeater 16 shown in the broadcasting equipment of Figures 8 and 9 is the same as the repeater 16 of the broadcasting equipment shown in Figure 3, and basically has the function of amplifying the broadcast audio signal sent from the broadcast control panel 110 via the broadcast audio signal line 14 when it receives a broadcast control command specifying its own address sent from the broadcast control panel 110 via the transmission line 12, and outputting the amplified broadcast audio signal to the speaker signal line 18 to output an emergency broadcast from the speaker 20.

[0115] (Control operation of emergency broadcast equipment) As shown in FIG. 8, when the receiver 10 of the fire alarm system determines (confirms) that a fire has occurred and outputs a fire alarm, it outputs to the broadcast control panel 110 a fire alarm transfer signal including information indicating the floor on which the fire has occurred.

[0116] The broadcast control unit 60 of the broadcast control panel 110 receives the fire alarm signal from the receiver 10 via the alarm reception unit 116 and transmits a broadcast start command specifying the address of the repeater 16 on the floor where the fire occurred over the transmission line 12. At the same time, it reads out the broadcast data for the detector alarm broadcast stored in the broadcast sound source unit 56, converts it into a detector alarm broadcast audio signal, outputs it to the broadcast audio signal line 14 and transmits it to the repeater 16.

[0117] For this reason, the repeater control unit 65 of the repeater 16, which is the same as that shown in Figure 3 and is installed on the floor where the fire occurred, receives a broadcast start command specifying its own address, operates the audio amplifier unit 66, amplifies the detector alarm broadcast audio signal sent from the receiver 10 via the broadcast audio signal line 14, outputs it to the speaker signal line 18, and causes the speaker 20 installed on the floor where the fire occurred to output the specified detection alarm broadcast.

[0118] Next, the disaster prevention manager checks the site, and if there is a fire, he operates the emergency broadcast screen on the display 38 to select the floors immediately above and below the floor where the fire occurred.The broadcast control unit 60 then outputs a broadcast start command to the transmission line 12, sequentially specifying the addresses of the repeaters 16 on the floors immediately above and below, and at the same time reads out the fire broadcast data from the broadcast sound source unit 56, converts it into a fire broadcast audio signal, outputs it to the broadcast audio signal line 14, and sends it to the repeater 16.

[0119] The repeater control unit 65 of the repeater 16 installed on the floor immediately above and below the floor where the fire broke out receives the broadcast start command specifying its own address, activates the audio amplifier unit 66, and amplifies the fire broadcast audio signal sent from the receiver 10 via the broadcast audio signal line 14, and outputs it to the speaker signal line 18. At this time, since the audio amplifier unit 66 of the repeater 16 on the floor where the fire broke out is already operating, the specified fire broadcast is output from the speakers 20 installed on the floor where the fire broke out and on the floor immediately above and below.

[0120] Furthermore, if the fire spreads further during the fire broadcast, the disaster prevention manager can operate the broadcast switch using the emergency broadcast screen displayed on the display 38, which will cause the broadcast control unit 60 to output a broadcast start command including a common address specifying the repeaters 16 on all floors to the transmission line 12. The repeater control unit 65 of the repeater 16 installed on floors other than the floor where the fire occurred, the floor immediately above, and the floor immediately below will receive the broadcast start command specifying the common address and operate the audio amplifier unit 66, which will amplify the fire broadcast audio signal sent from the receiver 10 via the broadcast audio signal line 14 and output it to the speaker signal line 18, resulting in a fire broadcast being output from the speakers 20 on all floors.

[0121] On the other hand, when the disaster prevention manager checks the site in response to the fire alarm and finds that there is no fire, he operates the non-fire broadcast switch using the emergency broadcast screen displayed on the display 38, and based on this, the broadcast control unit 60 reads the non-fire broadcast data from the broadcast sound source unit 56, converts it into a non-fire broadcast audio signal, outputs it to the broadcast audio signal line 14, and sends it to the repeater 16.

[0122] For this reason, the audio amplifier unit 66 of the repeater 16 installed on the floor where the fire occurred amplifies the non-fire broadcast audio signal sent from the broadcast control panel 110 via the broadcast audio signal line 14 and outputs it to the speaker signal line 18, and the specified non-fire broadcast is output from the speaker 20 on the floor where the fire occurred.

[0123] [An embodiment of broadcasting equipment in which a repeater is installed for each of a plurality of broadcasting areas] (broadcast control panel and repeater) As another embodiment of the broadcasting equipment shown in Fig. 8, similar to the broadcasting equipment shown in Fig. 4, repeaters 16 may be provided, for example, every third floor of building 11, and speaker signal lines 18 may be drawn from repeater 16 to each floor to connect speakers 20 on each floor. In this case, repeaters 16 installed every third floor would be the same as repeaters 16 shown in Fig. 5.

[0124] [Embodiment of broadcasting equipment that stores and plays back broadcast data in a repeater] The broadcast control panel 110 corresponding to this embodiment is the same as that of the embodiment of Figure 9, but the repeater 16 is the same as the repeater 16 of the broadcasting equipment shown in Figure 6, and is characterized in that a broadcast data memory unit 88 is provided in the CPU 62.

[0125] In this embodiment, when the equipment is started up, the broadcast control unit 60 of the broadcast control panel 110 sends a broadcast audio signal write command to the repeater 16 via the transmission line 12, and reads out all broadcast data stored in the broadcast sound source unit 56, converts it into an analog broadcast audio signal, and outputs it to the broadcast audio signal line 14.In response to this, based on the broadcast audio signal write command from the receiver 10, the repeater control unit 65 of the repeater 16 receives the broadcast audio signal received at that time from the broadcast audio signal line 14 using the broadcast audio signal transmission / reception unit 84, reads it into the CPU 62, converts it into broadcast data, and stores it in the broadcast data memory unit 88.

[0126] The control operation during operation after the broadcast data has been stored in the repeater 16 differs in that broadcast control commands are sent from the receiver 10 but no broadcast audio signals are sent, and instead the broadcast data is read from the broadcast data storage unit 88 based on the broadcast control commands, converted into analog broadcast audio signals and output to the broadcast control unit 60; however, the other configurations and functions are the same as those of the repeater 16 shown in Figure 5.

[0127] In this way, in this embodiment, by storing broadcast data in the repeater 16 in advance, when it is determined that a fire has occurred, the broadcast control panel 110 transmits a broadcast control command specifying at least the repeater address of the floor on which the fire has occurred to the repeater 16, and the repeater 16 receives the broadcast control command specifying its own address, reads out the pre-stored broadcast data, converts it into a broadcast audio signal, and outputs it from the speaker 20, thereby making it possible to easily make an emergency broadcast on the repeater 16 side without transmitting a broadcast audio signal from the broadcast control panel 110.

[0128] In addition, it is possible to set different broadcast types by broadcast control commands for each repeater 16, allowing different types of emergency broadcasts to be made for each broadcast area. For example, it is possible to set a broadcast urging evacuation for the floor where the fire has occurred and the floors above and below, and a broadcast indicating the occurrence of a fire for other floors, thereby enabling evacuation guidance according to the degree of fire danger.

[0129] In addition, in order to store broadcast data for the repeater 16, in addition to transmitting and storing the emergency broadcast audio signal from the receiver 10, the audio data may be stored in a removable non-volatile memory, which may be attached to the repeater 16 for use.

[0130] [Modifications of the present invention] (transmission line) In the above embodiment, the specified alert system area and the specified broadcasting area are the same, and repeaters 16 are connected to the transmission lines (broadcast control lines) 12-1 to 12-9, respectively, but the specified alert system area and the specified broadcasting area may also be different.

[0131] For example, if one alert system area corresponds to multiple broadcasting areas, multiple repeaters may be connected to the transmission line corresponding to the alert system area for each broadcasting area, or a repeater 16 having a line selection unit may be used.

[0132] For example, if it is desired to set a broadcasting area arbitrarily regardless of the alert system area, transmission lines 12-n connecting to multiple repeaters may be drawn from the receiver 10 and connected in parallel to the broadcast audio signal line. In this case, a broadcast start command including a common address specifying the repeaters 16 on all floors may be used to broadcast simultaneously.

[0133] (branching by repeater) In the above embodiment, the broadcast audio signal line 14 has a trunk line before it is divided into branches for each floor, and a repeater 16 is connected to each branch point from the trunk line. However, the repeater may also function as a branching device, branching the broadcast audio signal line 14 within the repeater and connecting the branched points to the speaker signal line 18. The output of the trunk line after branching may also be amplified. By adopting such a configuration, the branching circuit unit and the repeater can be configured as an integrated unit, thereby enabling space savings compared to configuring them separately.

[0134] (broadcasting equipment) In addition, in the broadcasting equipment embodiment, the receiver may be able to listen to what is being broadcast.

[0135] (Broadcast Control Unit) Although the broadcast control unit in the above embodiment is configured to make emergency broadcasts, it may also be configured to make general broadcasts other than emergency broadcasts.

[0136] (wireless sensor) The above embodiment of the broadcasting equipment takes as an example a communication form in which a fire detector is connected to a transmission line drawn from the receiver into the security area of ​​the facility, but the fire detector may be a wireless fire detector, and some or all of the communication between the receiver and the fire detector may be wireless.

[0137] (Fire information signal) In the above embodiment, the response signal including the sensor data of the analog fire detector is used as the predetermined fire information signal, but the predetermined fire information signal may also be a response signal from a repeater or a fire detection signal from an on-off fire detector.

[0138] (P-type receiver) The above embodiment of the broadcast equipment takes as an example disaster prevention equipment in which an R-type fire detector is connected via a transmission line from an R-type receiver, but disaster prevention equipment in which an addressable fire detector with a transmission function is connected and an address is set on the detector line drawn from a P-type (Proprietary-type) receiver can also be used. By displaying a fire alarm screen and an emergency broadcast screen on the display on the receiver panel in the event of a fire, there is no need to install a dedicated emergency broadcast panel separately, reducing the installation space for disaster prevention equipment and emergency broadcast equipment. Furthermore, the fire indication and fire origin floor indication, etc., required for operating the emergency broadcast equipment can be displayed directly on the receiver's display, eliminating the need for duplicate displays. Furthermore, because disaster prevention personnel can operate emergency broadcasts on the receiver, they can quickly and appropriately operate and respond to emergency broadcasts in conjunction with fire response in the event of an emergency such as a fire, ensuring high operability.

[0139] (Automatic broadcast function) In addition, in the above embodiment, when a fire occurs, the broadcast control unit selects the broadcast area by operating the screen and makes a detector alarm broadcast, but it may also be configured to automatically select the floor where the fire occurred and the floor immediately above based on the fire area and make a detector alarm broadcast. Furthermore, if the emergency broadcast control unit confirms the fire on site during a detector alarm broadcast and makes an emergency broadcast, it may switch to a general broadcast after a predetermined time has passed.

[0140] (others) Furthermore, the present invention includes appropriate modifications that do not impair the objects and advantages thereof, and is not limited to the numerical values ​​shown in the above embodiments. [Explanation of symbols]

[0141] 10: Receiver 11: Building 12, 12-1 to 12-9: Transmission line 14: Broadcast audio signal line 16: Repeater 18, 18-1 to 18-3: Speaker signal line 20: Speaker 22: Analog fire detector 24: Fire alarm repeater 26: On-off fire detector 27: Transmitter 28: Addressable transmitter 30: Main CPU 32, 32-1 to 32-9: Sub-CPU board 34, 34-1 to 34-9: Sub-CPU 36, 36-1 to 36-9: Transmission section 35: Serial transfer bus 38: Display 40: Display section 42:Operation unit 44: Acoustic alarm section 46: Transfer Department 50: Reception control section 52: Emergency broadcast speaker 54: Announcement microphone 56: Broadcast Sound Department 58,84: Broadcast audio signal transmitter / receiver 60: Broadcast control section 62:CPU 64: Transmission unit 65: Repeater control unit 66: Audio amplifier 68: Power supply section 70: Battery 72: Power supply testing section 100: Relay panel 102-1, 102-n: Transmission line 104: Network line 106: Relay panel control unit 108: Broadcast control section 110: Broadcast control panel 112: Display section 114:Operation unit 116: Message receiving unit

Claims

[Claim 1] a receiver with an integrated broadcast control panel; a first group of fire detectors connected to a first transmission line extending from the receiver and configured to monitor fires in a first area; a second group of fire detectors connected to a second transmission line drawn from the receiver separately from the first transmission line, the second group monitoring fires in a second area different from the first area; a first broadcast repeater connected to a first broadcast notification device that broadcasts to the first area, and connected to the first transmission line drawn from the receiver and a broadcast audio signal line drawn from the receiver separately from the first transmission line; a second broadcast repeater connected to a second broadcast notification device that broadcasts to the second area and connected to the second transmission line and the broadcast audio signal line drawn from the receiver; Equipped with the broadcast audio signal line comprises a trunk line from the receiver; The first broadcast repeater and the second broadcast repeater are connected to a trunk line of the broadcast audio signal line or to the broadcast audio signal line branched from the trunk line, The receiver includes: When a broadcast is to be made by the first broadcast notification device in response to the detection of a fire, a control signal is transmitted to the first broadcast repeater via the first transmission line, and a broadcast audio signal is transmitted via the broadcast audio signal line; When a broadcast is to be made by the second broadcast notification device in response to the detection of a fire, a control signal is transmitted to the second broadcast repeater via the second transmission line, and a broadcast audio signal is transmitted via the broadcast audio signal line; The broadcast repeater amplifies the received broadcast audio signal based on the received control signal and transmits the amplified signal to a broadcast notification device located in the same broadcasting area; The disaster prevention equipment is characterized in that the broadcasting alarm device broadcasts based on the received broadcast audio signal.

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