JP6444848B2 - Fire alarm system - Google Patents

Description

  The present invention relates to a fire alarm facility.

  In a fire alarm facility in which multiple fire detectors and fire receivers are connected via signal lines, multiple camera terminals and fire receivers are connected via video lines different from signal lines, There is one in which images taken by each camera terminal are displayed on a fire receiver so that the fire occurrence status can be confirmed on the fire receiver (see, for example, Patent Document 1).

JP 2003-296836 A

  In the fire alarm facility described in Patent Document 1, it is necessary to arrange a video line different from the signal line, and the construction is complicated. In addition, it is conceivable to collect the status information of each fire detector and the image information of each camera terminal with the same signal line without using video lines, but in that case, as a result of collecting the image information of each camera terminal, There should be no problem that the collection of the status information of each fire detector is neglected.

  The present invention collects the status information of each fire detector and the status information of each terminal device with the same signal line, and further prevents the status information of each fire detector from being collected in that case. For the purpose.

(1) This invention is connected to a plurality of fire detectors and fire receiver through the signal line, and a plurality of sound pickup means for transmitting to said fire receiver picks up ambient sounds In a fire alarm facility connected to the fire receiver via the signal line, the fire receiver performs sensor information collection polling for collecting status information of a plurality of fire detectors in a row, and the detector After the information collection polling, the signal collection for collecting the state information of the sound collection means is performed as one cycle, and the signal transmission for the one cycle is performed cyclically, thereby the plurality of fires. Monitor and control the detector and the sound collection means, collect and display status information of each fire detector, and output based on the sound signal transmitted from the sound collection means when a fire occurrence is detected Characterized by To do.

( 2 ) Further, according to the present invention, in ( 1 ), the fire receiver includes a signal indicating a human voice in the sound signal transmitted from the sound collecting means when the occurrence of a fire is detected. It is characterized in that it is determined whether there is a person who has missed escape by determining whether or not there is a person who has been late, and the determination result is displayed.

( 3 ) Further, according to the present invention, in ( 1 ) and ( 2 ), an alarm sound or an alarm message is connected to the fire receiver via the signal line and according to an alarm output command from the fire receiver. a plurality of acoustic output means for outputting comprises a plurality of sound output means that are provided corresponding to the sound collecting means, said fire receiver, the audio output and the sound pickup means and the fire detector A speaker device that identifies a sound detector and a sound output means corresponding to a fire detector that has detected a fire based on a correspondence table with the means, and outputs a sound signal received from the identified sound collection means; And a microphone device for transmitting a sound signal to be output to the sound output means.

( 4 ) Further, according to the present invention, in ( 1 ) and ( 2 ), an alarm sound or an alarm message is connected to the fire receiver via the signal line and according to an alarm output command from the fire receiver. a plurality of acoustic output means for outputting comprises a plurality of sound output means that are provided corresponding to the sound collecting means, said fire receiver, from KakuOsamuoto means when the fire has been detected It is determined whether there is a person who has escaped by determining whether a signal indicating the voice of a person is included in the transmitted sound signal, and the sound collection means that has been determined that there is a person who has been delayed has been identified, A sound output unit corresponding to the sound collection unit is identified based on a correspondence table between the sound collection unit and the sound output unit, and a speaker device that outputs a sound signal received from the identified sound collection unit is identified. Sound output hand And forming a speech path and a microphone device for transmitting a sound signal to be output to.

Moreover, according to the configuration of ( 1 ), the fire alarm facility can collect the state information of each fire detector and the sound signal transmitted from each sound collecting means through the same signal line.

Moreover, according to the structure of said ( 2 ), the said fire alerting | reporting equipment can display on the fire receiver that there is a person who escaped late at the time of a fire.

Moreover, according to the structure of said ( 3 ), the said fire alarm equipment can output a sound signal to the sound output means corresponding to the said sound collection means with the same signal line. Furthermore, in the event of a fire, it is possible to make a call from the fire receiver with the people around the fire detector that detected the fire.

According to the configuration of the above ( 4 ), the fire alarm system transmits a sound signal to the sound output means corresponding to the sound collection means determined to be a person who has escaped in the event of a fire through the same signal line. It is possible to output, and a call can be made from a fire receiver with a person who has escaped during a fire.

The block diagram which shows the fire alerting | reporting installation in 1st Embodiment of this invention. The block diagram which shows the fire detector in 1st Embodiment of this invention. The block diagram which shows the camera terminal in 1st Embodiment of this invention. The figure which shows an example of the transmission format in 1st Embodiment of this invention. The figure which shows an example of PP transmission frame in 1st Embodiment of this invention. 3 is a flowchart showing the operation of the fire receiver in the first embodiment of the present invention. 3 is a flowchart showing the operation of the fire detector according to the first embodiment of the present invention. 3 is a flowchart showing the operation of the camera terminal according to the first embodiment of the present invention. It is a block diagram which shows the modification of the fire alarm equipment with which the option apparatus was connected to the signal wire | line. It is a block diagram which shows the structure of a microphone apparatus. It is a block diagram which shows the structure of a speaker apparatus.

Embodiments of the present invention will be described below with reference to the drawings.
[First Embodiment]
FIG. 1 is a block diagram of a fire alarm facility according to the first embodiment of the present invention. In FIG. 1, reference numeral 1 denotes a fire receiver, which includes a CPU 11 including a storage device 11 a, a calculation unit 11 b and a ROM 11 c, a transmission unit 12, an interface 13, a display unit 14, and an operation unit 15. Reference numerals 21 to 2n denote a plurality of fire detectors having unique addresses connected to the fire receiver 1 through the signal line L1. Reference numerals 31 to 3n denote a plurality of camera terminals having unique addresses connected to the fire receiver 1 via the signal line L1. The camera terminals 31 to 3n are provided corresponding to the fire detectors 21 to 2n in order to photograph the sensor monitoring areas of the fire detectors 21 to 2n, respectively. In this embodiment, the fire notification facility is an R-type fire notification facility in which signal transmission is performed between each fire detector 2 and each camera terminal 3 and the fire receiver 1. The camera terminals 3 1 to 3 n are examples of optional devices that are devices other than the fire detectors 2 1 to 2 n that communicate with the fire receiver 1. In the present embodiment, the signal line L1 for communication with the fire receiver 1 is commonly used for the fire detectors 21 to 2n and the camera terminals 31 to 3n. Note that devices connected to the fire receiver 1 via the signal line L are also collectively referred to as terminal devices.

The ROM 11c of the fire receiver 1 stores a detector-camera correspondence table for each fire detector 21-2n and each camera terminal 31-3n. The fire receiver 1 monitors and controls the plurality of fire detectors 2 and the plurality of camera terminals 3 via the signal line L1, and collects the state information of each fire detector 2 and the image information of each camera terminal 3. Is displayed on the display unit 14.
FIG. 2 is a block diagram showing a fire detector according to the first embodiment of the present invention. In FIG. 2, 21 is a fire detection unit for detecting a fire, 22 is an address unit as self-address storage means for storing a self-address, and 23 is a CPU for performing arithmetic processing. The CPU 23 includes a calculation unit 23a that performs calculation, an address comparison unit 23b that serves as an address confirmation unit that compares the transmission address with the self address, a RAM 23c, and a ROM 23d.

  Reference numeral 24 denotes a receiving unit as a signal receiving unit that receives information from the fire receiver 1 and supplies the information to the CPU 23. Reference numeral 25 denotes a signal transmitting unit that sends information (for example, status information) from the CPU 23 to the fire receiver 1. 27 is an LED as a light emitting means, 28 is an LED driving unit for lighting the LED 27, and 29 is a constant voltage unit that mainly supplies a stable voltage to the CPU 23. The LED 27 is turned on by the LED drive unit 28 when a fire is detected as a fire indicator lamp.

  T1 and T2 are external terminals connected to the fire receiver 1 via the signal line L1, and the external terminal T1 (+ side) is connected to the internal constant voltage unit 29, and the external terminal T2 (− side). Is connected to the ground side of each circuit.

  FIG. 3 is a block diagram showing the camera terminal according to the first embodiment of the present invention. In FIG. 3, reference numeral 31 denotes a camera unit for photographing the sensor monitoring area, 32 denotes an address unit as a self-address storing means for storing a self-address, and 33 denotes a CPU for performing arithmetic processing. The CPU 33 is a calculation unit 33a that performs a calculation, an address comparison unit 33b that serves as an address confirmation unit that compares a transmission address and a self address, and a RAM 33c and a ROM 33d that temporarily store image information of a sensor monitoring area captured by the camera unit 31. Have Note that the image information may be stored not only in the RAM 33c but also in other memories. In that case, a flash memory or the like may be detachable.

  Reference numeral 34 denotes a receiving unit as a signal receiving unit that receives information from the fire receiver 1 and supplies the information to the CPU 33. Reference numeral 35 denotes a signal transmitting unit that sends information (for example, image information) from the CPU 33 to the fire receiver 1. The transmission unit 39 is a constant voltage unit that mainly supplies a stable voltage to the CPU 33.

  T3 and T4 are external terminals connected to the fire receiver 1 via the signal line L1, and the external terminal T3 (+ side) is connected to the internal constant voltage unit 39, and the external terminal T4 (− side). Is connected to the ground side of each circuit.

  Here, the transmission format used in this embodiment will be described with reference to FIGS. This transmission system includes three types: system polling (hereinafter referred to as SP), point polling (hereinafter referred to as PP), and selecting (hereinafter referred to as SL). There are two types of PP: analog point polling (hereinafter referred to as APP) as sensor information collection polling and camera point polling (hereinafter referred to as KPP) as camera information collection polling. Note that the SP is such that the fire receiver 1 transmits a predetermined control command to a plurality of terminal devices to control the plurality of terminal devices, and the control command transmitted by the SP includes, for example, a fire detection There is a fire restoration order for a vessel, a stop order for a district sound device (such as an alarm bell or a speaker device described later), and the like. In addition, SL is an operation of transmitting a predetermined control command by designating an address to an individual terminal device, controlling the terminal device, and collecting status information and the like individually from the terminal device, The control command transmitted by the SL includes, for example, a smoke control device as a terminal device, a startup command for a district sound device, a status information collection command, and the like.

  The fire receiver 1 makes a request for returning the status information of the fire detector 2 and the image information of the camera terminal 3, but normally the fire detector 2 and the camera terminal 3 are in the order shown in FIG. , PP only. Each SL and each SP is implemented between PPs as necessary.

  Here, PP will be described. First, APP will be described. Each fire detector 2 has an address and a cluster. For example, when the addresses 21 to 2n of the fire detector in FIG. 1 are 1 to 16, these addresses are grouped into four groups 1 to 4, 5 to 8, 9 to 12, and 13 to 16, and these Clusters 1, 2, 3, and 4 correspond to each other. It is APP that makes a request for returning the status information of the fire detector 2 for each cluster and collects the status information. In addition, the cluster of each fire detector 2 may be stored with the address in the address part 22 of each fire detector 2, for example.

  Then, the fire receiver 1 performs APP in units of clusters in the order shown in FIG. 4 for the fire detector 2, and makes a request for returning the status information of the fire detector 2 in units of clusters. The fire detector 2 receives and analyzes the transmission signal, that is, the return request signal (APP) from the fire receiver 1, and when the cluster specified by the return request signal matches the cluster stored in the address unit 22. In the PP transmission frame (APP) as shown in FIG. 5, the return data is sent to the fire receiver 1 at the position determined by the address, that is, the corresponding return frame in the PP transmission frame (APP).

  Next, KPP will be described. The fire receiver 1 performs KPP on one camera terminal 3 in the address unit in the order shown in FIG. 4 for the camera terminal 3, for example, and one camera terminal in the address unit. 3, a request for returning the image information of the camera terminal 3 is made. The KPP collects image information by making a return request for image information for each camera terminal 3 for each address unit. The camera terminal 3 receives and analyzes the transmission signal from the fire receiver 1, that is, the return request signal (KPP), and when the address specified by the return request signal matches the address stored in the address section 32, Return data is sent to the fire receiver 1 in the image information return frame of the PP transmission frame (KPP) as shown in FIG. Note that signal transmission by transmission frame allocation is an example of transmission by time-domain multiplexing.

  Using the above-described APP and KPP, the fire receiver 1 performs sensor information collection polling (from APP cluster 1 to APP cluster 4) that collects the state information of each fire sensor 2 in a general manner. After information collection polling, signal transmission for performing camera information collection polling (KPP) for collecting image information of each camera terminal 3 is defined as one cycle, and signal transmission for one cycle is performed cyclically. Here, camera information collection polling (KPP) is polling that collects image information of one camera terminal 3, and is not polling that collects image information of a plurality of camera terminals 3 like APP. The length of the transmission frame is not increased, and the collection of the status information of each fire detector 2 is not obscured.

  Here, KPP will be described below because the image information collection method of the camera terminal 3 is different between the normal time and the fire time. First, the fire receiver 1 normally circulates one of the camera terminals 3 for each signal transmission for one cycle (that is, after the APP cluster 4 in the example shown in FIG. 4). And image information of each camera terminal 3 is collected. That is, when the addresses of the camera terminals 3 1 to 3 n in FIG. 1 are 17 to 32, for example, in the example shown in FIG. 4, the camera terminal 3 with the address 17 for KPP1, the address 18 for KPP2,. As described above, the address of each camera terminal 3 is cyclically designated, and the image information of the camera terminal 3 designated by the address is collected. Thereby, the fire receiver 1 can collect the image information of each camera terminal 3 and display it on the display unit 14 in normal times.

  On the other hand, at the time of a fire, the camera terminal 3 corresponding to the fire detector 2 that detects the fire is designated for each signal transmission for one cycle (that is, after the APP cluster 4 in the example shown in FIG. 4). By performing KPP, image information of the camera terminal 3 corresponding to the fire detector 2 that has detected a fire is continuously collected. The designation of the camera terminal 3 corresponding to the fire detector 2 that has detected a fire is determined based on the sensor-camera correspondence table in the ROM 11c. Thereby, the fire receiver 1 can continuously collect the image information of the camera terminal 3 corresponding to the fire detector 2 that has detected the fire and display it on the display unit 14 in the event of a fire.

  Also, the image information return frame in FIG. 4 is long enough to return one piece of image information in a normal state, and long enough to return a plurality of pieces of image information in a fire. The camera terminal 3 returns one piece of image information during normal times and a plurality of pieces of image information during fires. As a result, the fire receiver 1 can normally collect one piece of image information with a single KPP and display a still image on the display unit 14, and can collect multiple pieces of image information with a single KPP during a fire. Thus, a continuous image such as a moving image can be displayed on the display unit 14, and it is easy to check a fire occurrence state.

  Next, the operation will be described with reference to FIGS. First, the operation of the fire receiver 1 will be described. FIG. 6 is a flowchart showing the operation of the fire receiver 1. First, when the power is turned on, the CPU 11 is activated, initial processing is performed, and the fire receiver 1 is in an operating state (step S1). In this operating state, the CPU 11 prepares for transmission / reception (step S2). During this period, power is supplied to the signal line L1, and each fire detector 2 and camera terminal 3 are also activated to prepare for operation at the same time. After the completion of this operation, the CPU 11 continues the operation of cyclically implementing PP as shown in FIG. 4 by signal transmission (step S3). In PP, the fire receiver 1 discriminates a fire based on the status information collected from each fire detector 2, and if a fire is discriminated, it indicates that a fire has occurred with the address of the fire detector 2 that detected the fire. Is displayed on the display unit 14 (fire display). The fire display may include map information (floor map) indicating the position of the fire detector 2 that has detected a fire with a predetermined symbol. Further, as described above with reference to FIG. 4, during normal times, still images of each camera terminal 3 are periodically updated and displayed on the display unit 14. During a fire, a continuous image of the camera terminal 3 corresponding to the fire detector 2 that has detected the fire is continuously displayed on the display unit 14.

  FIG. 7 is a flowchart showing the operation of the fire detector 2. First, when the power is turned on, power is supplied from the fire receiver 1 to the fire detector 2, the CPU 23 is reset (initial processing), and the operation state is entered (step S11). In this operating state, the CPU 23 performs port setting, preparation for transmission / reception, and the like (step S12). After this operation is completed, the CPU 23 waits for reception of a signal from the fire receiver 1 (step S23).

  When a signal is received from the fire receiver 1 in this reception waiting state, it is determined whether or not the reception signal is an APP return request signal. If it is not an APP return request signal, the process returns to step S13 to wait for reception. If it is an APP return request signal, the process proceeds to step S15 (step S14). In step S15, it is determined whether or not the cluster in the received data matches the own cluster. In other words, the address comparison unit 23b compares the cluster substantially corresponding to the received address portion with the own cluster based on the self address (step S15).

  If the clusters do not match, the process returns to step S13 and waits for reception. If the clusters match, the reply timing is waited (step S16). In step S16, when the return timing comes, the return data is sent to the transmission unit 25, and the return data is transmitted from the transmission unit 25 to the fire receiver 1. (Step S17).

  FIG. 8 is a flowchart showing the operation of the camera terminal 3. First, when the power is turned on, power is supplied from the fire receiver 1 to the camera terminal 3, the CPU 33 is reset (initial processing), and an operating state is entered (step S21). In this operating state, the CPU 33 performs port setting, preparation for transmission / reception, and the like (step S22). After this operation is completed, the CPU 33 waits for reception of a signal from the fire receiver 1 (step S23).

  When a signal is received from the fire receiver 1 in this reception waiting state, it is determined whether or not the received signal is a KPP return request signal. If it is not a KPP return request signal, the process returns to step S23 to wait for reception. If it is a KPP return request signal, the process proceeds to step S25 (step S24). In step S25, the address included in the received signal is compared with the self address by the address comparison unit 33b (step S25). If the addresses do not match, the process returns to step S23 to wait for reception. If the addresses match, the return data is sent to the transmitter 35, and the return data is sent from the transmitter 35 to the fire receiver 1. To do. (Step S26).

  In the first embodiment, the APP is described as the sensor state information collection polling for collecting the state information of the fire detectors 21 to 2n. However, the state information of the camera terminals 31 to 3n is also collected. Polling, that is, terminal device status information collection polling that collects status information of each terminal device 21-2n, 31-3n, which allows the fire receiver 1 to monitor the status of the camera terminal 3, Sometimes the camera terminal 3 does not operate.

  In the first embodiment, the KPP has been described assuming that the length of the image information return frame is such that a plurality of pieces of image information can be collected in the event of a fire. Can be displayed, the camera terminal 3 that collects image information may be fixed and continuously collected, or may be of a length that allows collection of one piece of image information. In contrast to the above, if the state information collection of each fire detector 2 is not obscured, the length of the image information return frame is set so that a plurality of pieces of image information can be collected even during normal times. It may also be assumed.

  In the first embodiment, sensor information collection polling (from APP cluster 1 to APP cluster 4) for collecting the state information of each fire sensor 2 is performed, and after the sensor information collection polling, The signal transmission for performing the KPP is described as one cycle, and the signal transmission for the one cycle is performed cyclically. However, if the collection of the state information of each fire detector 2 is not obscured, the frequency of the KPP For example, KPP may be performed between APP clusters.

  In the first embodiment, the KPP is described as polling for collecting image information of one camera terminal 3, but it seems that the collection of the status information of each fire detector 2 is not obscured. If there is, it is also possible to perform polling for collecting image information of a plurality of camera terminals 3 as in the case of APP.

[Second Embodiment]
In the following, the second embodiment will be described. The difference from the first embodiment is that the fire alarm equipment performs a switching operation when each fire detector 2 detects a fire, and fire signals This is a P-type fire alarm facility that outputs.

  Therefore, the fire detector 2 is provided with a switching circuit between the external terminals T1 and T2 in addition to the configuration of FIG. The switching circuit is a circuit that performs a switching operation and outputs a fire signal when a fire is detected, and outputs a fire signal by substantially short-circuiting the signal line L1 to lower the voltage level by the switching operation. As described above, the state information indicating whether or not there is a fire is output to the fire receiver 1 according to the voltage level (signal component) of the DC component of the signal line L1.

  On the other hand, the fire receiver 1 is provided with a fire signal receiving circuit connected to the signal line L1 in addition to the configuration of FIG. The fire signal receiving circuit detects a decrease in the DC voltage level of the signal line L1 based on the switching operation of the switching circuit of the fire detector 2, and receives the fire signal.

  Each camera terminal 3 transmits image information as an AC component image signal in the transmission unit 35. The fire receiver 1 collects image information by receiving an image signal of an AC component in the transmission unit 12. The image signal of the AC component may be sent with a width (voltage level width) that does not interfere with the switching level discrimination in the fire signal receiving circuit of the fire receiver 1, and an analog signal and a pulse are generated. Any digital signal to be transmitted may be used.

  As the operation flow, the fire receiver 1 normally designates each camera terminal 3 cyclically, sends out an image transmission command periodically, and the corresponding camera terminal 3 receives it. The image information is transmitted as an AC component image signal on the signal line L1. Then, the fire receiver 1 collects the image information of each camera terminal 3 and displays it on the display unit 14.

  On the other hand, when a fire signal is detected by the fire signal receiving circuit, by polling like APP, detector specific polling that sequentially identifies the fire detector 2 is performed to obtain status information of each fire detector 2 and detect a fire. The address of the fire detector 2 is specified, and an image indicating that a fire has occurred is displayed on the display unit 14 together with the address of the specified fire detector 2 (fire display). Thereafter, the fire receiver 1 designates the camera terminal 3 corresponding to the fire detector 2 of the specified address, sends out an image transmission command, and the corresponding camera terminal 3 receives the instruction to send it on the signal line L1. In addition, the image information is transmitted as an AC component image signal. The fire receiver 1 collects image information of the camera terminal 3 and displays it on the display unit 14. As described above, the fire receiver 1 can receive the fire signal and the image signal, collect the state information of each fire detector 2 and the image information of each camera terminal 3, and display them on the display unit 14. .

  The fire receiver 1 regularly performs inspection polling such as APP on each fire detector 2 to check the inspection information of each fire detector 2 (the fire detector 2 is normal). Is collected) and displayed on the display unit 14. The inspection polling may be performed for each camera terminal 3, but image information may be collected from each camera terminal 3 at normal times and can be made unnecessary.

  In the second embodiment, it is assumed that the camera terminal 3 outputs image information as an AC component image signal so that the fire detector 2 outputs a DC component fire signal and can be distinguished from the fire signal. As described above, it suffices that the fire receiver 1 can distinguish between the state information (fire signal) of the fire detector 2 and the image information (image signal) of the camera terminal 3, and other various forms are also the invention of the present embodiment. include.

  In all the embodiments, the camera terminals 3 1 to 3 n are respectively provided corresponding to the fire detectors 2 1 to 2 n in order to photograph the sensor monitoring areas of the fire detectors 2 1 to 2 n. However, it is not necessary to have a one-to-one correspondence as long as the correspondence is established. For example, one camera terminal 3 and a plurality of fire detectors 2 may correspond to each other. In this case, as the detector-camera correspondence table, the setting data of the elevation angle and depression angle of the camera terminal 3 is set for each fire detector 2. For example, the camera terminal 3 corresponding to the fire detector 2 that detects the fire may be turned in the event of a fire.

  In all the embodiments described above, the camera terminals 31 to 3n and the fire detectors 21 to 2n are described as separate bodies, but may be integrated.

  In the above embodiment, instead of or in addition to the camera terminals 3 1 to 3 n, other optional devices such as a microphone device (hereinafter referred to as a microphone device), a speaker device, etc. are connected to the fire detectors 21 1 to 3. 2n and the fire receiver 1 may be connected to a signal line L1.

  FIG. 9 is a block diagram illustrating a modified example of the fire alarm facility in which an optional device is connected to the signal line L1. In the fire alarm facility shown in FIG. 9, in addition to the camera terminals 31 to 3n, the microphone devices 41 to 4i and the speaker devices 51 to 5j are connected to the signal line L1 connecting the fire detectors 21 to 2n and the fire receiver 1. The connected point differs from the fire alarm facility shown in FIG. In the following description, when it is not necessary to distinguish between individual microphone devices or speaker devices, they are collectively referred to as microphone devices 4 or speaker devices 5. The microphone device 4 is installed in various places of facilities to be monitored by the fire alarm equipment (for example, nursing homes and factories). When a fire occurrence is detected, the microphone device 4 collects the surrounding sound and generates an electrical signal (sound Signal) and transmitted to the fire receiver 1. In the fire receiver 1, based on the sound signal transmitted from each microphone device 4, it is determined whether there is a person who has escaped using a known technique, and the determination result is displayed on the display unit 14, for example. The speaker device 5 is arranged at an appropriate place in the facility, and outputs a warning sound or a warning message according to a command from the fire receiver 1 when a fire is detected.

  FIG. 10 is a block diagram illustrating a configuration of the microphone device 4. As shown in FIG. 10, the microphone device 4 includes a CPU 41, an address unit 42, a communication unit 44, a microphone 45, and an A / D converter 46, and these units are communicably connected via a bus 47. .

  The CPU 41 includes a calculation unit, a ROM, and a RAM. The calculation unit reads out a program stored in the ROM to the RAM and executes the program, thereby controlling each unit of the microphone device 4 and performing various functions of the microphone device 4. Realize. The address unit 42 sets the address of the microphone device 4 in the same manner as the address unit 22 of the fire detector 2, and an individual address is set for each microphone device 4. The set address can be used as information for identifying each microphone device 4. The communication unit 44 transmits / receives various signals to / from the fire receiver 1 via the signal line L1. The microphone 45 converts the sound around the microphone device 4 into an analog electrical signal (referred to as a sound signal). The A / D converter 46 converts the analog sound signal output from the microphone 45 into a digital sound signal.

  FIG. 11 is a block diagram illustrating a configuration of the speaker device 5. As shown in FIG. 11, the speaker device 5 includes a CPU 51, an address unit 52, a communication unit 54, a speaker 55, and a D / A converter 56, and these units are communicably connected via a bus 57. .

  The CPU 51 includes a calculation unit, a ROM, and a RAM. The calculation unit reads out a program stored in the ROM to the RAM and executes the program, thereby controlling each unit of the speaker device 5 and performing various functions of the speaker device 5. Realize. The address unit 52 sets the address of the speaker device 5. The communication unit 54 transmits and receives various signals to and from the fire receiver 1 via the signal line L1. The D / A converter 56 converts alarm sound data or alarm message data stored in the ROM of the CPU 51 into an analog sound signal and supplies the analog sound signal to the speaker 55. The speaker 55 outputs a sound corresponding to the analog sound signal supplied from the D / A converter 56.

  In the fire alarm facility shown in FIG. 10, signal transmission / reception between the fire receiver 1 and the microphone device 4 is performed, for example, in the transmission format shown in FIG. May be performed by performing microphone point polling (MPP) for requesting transmission of a sound signal to the fire receiver 1 (that is, providing a sound signal return frame). Similarly to KPP, MPP is performed by cyclically specifying one of the microphone devices 4 for each cycle. The designation of the microphone device 4 is performed by including the address of the microphone device 4 designated in the sound signal return request transmitted from the fire receiver 1 in the MPP. Each microphone device 4 determines whether the address included in the sound signal return request matches the self-confidence address stored in the address unit 42, and returns the sound signal to the fire receiver 1 if they match. Thereby, sound signals representing sounds picked up by the respective microphone devices 4 are sequentially transmitted to the fire receiver 1. Then, the fire receiver 1 determines whether there is a person who is late, for example, by determining whether or not the sound signal includes a signal indicating a person's voice based on the sound signal transmitted from each microphone device 4. The determination result is displayed on the display unit 14, for example. The determination of whether there is a person who has escaped based on the sound signal transmitted from the microphone device 4 may be performed using another known technique. Each microphone device 4 transmits a sound signal representing the collected sound until the next transmission timing to the fire receiver 1 comes after transmitting the sound signal representing the collected sound to the fire receiver 1, for example. You may store in memory | storage devices (not shown), such as RAM and another hard disk.

  In addition, an alarm output command from the fire receiver 1 to the speaker device 5 at the time of a fire may be transmitted between appropriate PPs in the transmission format shown in FIG. 4, for example. As an example, the fire receiver 1 transmits an alarm output command to all the speaker devices 5 by system polling (SP). The speaker device 5 that has received a warning output command from the fire receiver 1 outputs a warning sound or warning message as a sound, for example, based on the warning sound data or warning message data stored in the ROM. As a result, the entire facility is ringed for the facility to be monitored. The alarm sound may be a bell sound, for example, and the alarm message may be, for example, “Fire has occurred. Please evacuate immediately”.

  Furthermore, the use of the speaker device 5 is not limited to the generation of an alarm sound or an alarm message, but may be used for broadcasting in a facility (in-house broadcasting). For example, a microphone device is provided in the fire receiver 1 so that the microphone device can be connected to the signal line L1 according to an operation of a predetermined switch (business broadcast switch), and the microphone device is connected to the signal line L1. The sound emitted toward the sound may be collected by the microphone device, a sound signal representing the collected sound may be sent to the speaker device 5 via the signal line L1, and the corresponding sound may be output from the speaker device 5. . In addition, a fire alarm receiver device (not shown) that receives emergency warnings such as earthquake warnings, tsunami warnings, evacuation warnings from the regional disaster prevention system, and warnings from the national instantaneous warning system (commonly known as J-ALERT) 1, the received emergency alert may be sent to the speaker device 5 via the fire receiver 1 and output (in-house broadcasting). As these audio output destinations, for example, the fire receiver 1 designates all the speaker devices 5 by system polling (SP). In addition, when a fire is detected during an in-house broadcast based on an emergency alarm, the in-house broadcast based on the emergency alarm may be given priority, and the fire alarm may be performed after the broadcast ends. If a fire is detected during a business broadcast, the business broadcast is immediately interrupted (that is, the signal from the microphone device provided in the fire receiver 1 to the speaker device 5 is interrupted), and a fire alarm operation is performed. Good.

  Moreover, it is good also as a structure which can call between the administrator of the fire receiver 1 and the refugee in the monitoring object facility at the time of a fire outbreak. As a configuration in that case, for example, the fire receiver 1 is provided with a speaker device in addition to the microphone device, and the ROM 11c of the fire receiver 1 has a microphone device 41 to the other than the sensor-camera correspondence table. A microphone device-speaker device correspondence table showing correspondence between 4i and speaker devices 51 to 5j is stored. The correspondence between the microphone devices 4 1 to 4 i and the speaker devices 5 1 to 5 j is not necessarily integral. For example, one speaker device may correspond to a plurality of microphone devices.

In the event of a fire, the fire receiver 1 detects the fire by performing KPP by designating the camera terminal 3 corresponding to the fire sensor 2 that has detected the fire based on the sensor-camera correspondence table. Image information of the camera terminal 3 corresponding to the fire detector 2 is continuously collected and displayed on the display unit 14. Moreover, the fire receiver 1 determines whether there is a person who has escaped based on the sound signal transmitted from each microphone device 4 by microphone point polling (MPP), and displays the determination result on the display unit 14, for example. .
At this time, if there is a person who has escaped, the fire receiver 1 specifies the microphone device 4 that has output the sound signal determined that there is a person who has escaped, and based on the microphone device-speaker device correspondence table. Thus, the speaker device 5 corresponding to the microphone device 4 that has output the sound signal determined that there is a person who has escaped is specified. The fire receiver 1 transmits a sound signal representing the sound collected by its own microphone device to the specified speaker device 5, and transmits a sound signal representing the sound received from the specified microphone device 4 to its speaker. It is converted into sound by the device and output. As a result, a communication path is formed through the signal line L1 between the microphone device and speaker device of the fire receiver 1 and the designated microphone device 4 and speaker device 5, and management in the vicinity of the fire receiver 1 is performed. A call can be made between a person and the identified refugee near the microphone device 4 and the speaker device 5. When the identified speaker device 5 outputs an alarm sound or the like based on an alarm output command from the fire receiver 1 when a fire is detected, the fire receiver 1 is picked up by its own microphone device. Before transmitting a sound signal representing a sound to the specified speaker device 5, an alarm output stop command may be sent to the speaker device 5 to stop the alarm output.

  Or, in the ROM 11c of the fire receiver 1, a detector-microphone device correspondence table showing the correspondence between the fire detectors 21 to 2n and the microphone devices 41 to 4i, and each fire detector 21 to 2n and the speaker device 51 to A sensor-speaker device correspondence table indicating correspondence with 5j is stored, and in the event of a fire, the fire receiver 1 detects a fire based on the sensor-microphone device correspondence table and the sensor-speaker device correspondence table. You may make it specify the microphone apparatus 4 corresponding to the sensor 2, and the speaker apparatus 5 corresponding to it. Also in this case, the fire receiver 1 makes a call via the signal line L1 between the microphone device and speaker device of the fire receiver 1 and the specified microphone device 4 and speaker device 5 in the same manner as described above. A road may be formed so that a call can be made between the manager and the refugee.

In this way, the microphone device 4 and the speaker device 5 are connected to the signal line L1 connecting the fire detector 2 and the fire receiver 1 to connect the microphone device 4 and the speaker device 5 to the fire receiver 1. Compared with the case of separately providing the wiring, the labor of wiring is reduced. Further, by using the speaker device 5 for broadcasting, it is not necessary to provide a separate broadcasting speaker.
Note that the present modification is not limited to the embodiment. For example, the fire detectors 21 to 2n, the camera terminals 31 to 3n, the microphone devices 41 to 4i, and the speaker devices 51 to 5j are integrated together. As with all the embodiments described above, various modes can be adopted.

  In the above embodiment and the modification, the signal transmitted through the signal line L1 is a digital signal and is transmitted in the assigned transmission frame. However, as a transmission by time domain multiplexing, time division is used. Transmission by multiplexing or packet communication (transmission by statistical multiplexing) may be used. Also, a multiplexing method other than multiplexing in the time domain may be employed. For example, these signals may be analog signals and multiplexed and transmitted by frequency division or the like.

  The present invention provides a fire alarm facility in which a plurality of fire detectors and a fire receiver are connected via a signal line, wherein a plurality of camera terminals are connected to the fire receiver via the signal line, The fire receiver monitors and controls the plurality of fire detectors and the plurality of camera terminals, and collects and displays the status information of each fire detector and the image information of each camera terminal. The state information of the fire detector and the image information of each camera terminal can be collected by the same signal line.

  The fire alarm facility is an R-type fire alarm facility in which signal transmission is performed between each fire detector and each camera terminal and the fire receiver, and the fire receiver includes each fire detector. Sensor information collection polling is performed to collect the state information of the camera, and after the sensor information collection polling, signal transmission for performing camera information collection polling for collecting image information of each camera terminal is defined as one cycle. In this way, in the R-type fire alarm system, the state information of each fire detector and the image information of each camera terminal are efficiently collected. Can do.

  Also, the camera information collection polling is polling for collecting image information of one camera terminal, and the fire receiver normally selects any one of the camera terminals for each signal transmission for one cycle. The image information of each camera terminal is collected by cyclically specifying the camera terminal, and in the event of a fire, the camera terminal corresponding to the fire detector that detected the fire should be specified for each signal transmission for one cycle. Since the image information of the camera terminal corresponding to the fire detector that detected the fire is continuously collected, the collection of the state information of each fire detector is not obscure, but each camera terminal Image information can be collected. In the event of a fire, the image information of the camera terminal corresponding to the fire detector can be continuously collected and displayed.

  In addition, the camera information collection polling has a frame for returning image information for collecting one piece of image information in a normal state and a plurality of pieces of image information in case of a fire. It is possible to collect the image information of each camera terminal while avoiding sneaking. In normal times, it is possible to collect one piece of image information and display a still image, and in case of fire, it is possible to collect multiple pieces of image information and display a continuous image, making it easy to check the status of the fire. .

  The fire alarm facility is a P-type fire alarm facility that performs a switching operation when each fire detector detects a fire and outputs a fire signal. An image of each camera terminal is displayed on the signal line. Information is sent as an AC component image signal, and the fire receiver receives the fire signal and image signal, and collects status information of each fire detector and image information of each camera terminal. In the P-type fire alarm facility, the state information of each fire detector and the image information of each camera terminal can be efficiently collected.

  In the fire alarm facility, since optional devices other than the plurality of camera terminals are connected to the signal line so as to be communicable with the fire receiver, wiring for connecting other optional devices to the fire receiver Need not be provided separately.

DESCRIPTION OF SYMBOLS 1 ... Fire receiver, 2 ... Fire detector, 3 ... Camera terminal, 4 ... Microphone apparatus, 5 ... Speaker apparatus, 11 ... CPU, 11a ... Memory | storage device, 11b ... Calculation part, 11c ... ROM, 12 ... Transmission part, DESCRIPTION OF SYMBOLS 13 ... Interface, 14 ... Display part, 21 ... Fire detection part, 22 ... Address part, 23 ... CPU, 23a ... Calculation part, 23b ... Address comparison part, 23c ... RAM, 23d ... ROM, 24 ... Reception part, 25 ... Transmission unit, 27 ... LED, 28 ... LED drive unit, 29 ... constant voltage unit, 31 ... camera unit, 32 ... address unit, 33a ... calculation unit, 33b ... address comparison unit, 33c ... RAM, 33d ... ROM, 34 ... Receiving unit, 35 ... transmitting unit, 39 ... constant voltage unit, 41 ... CPU, 42 ... address unit, 44 ... communication unit, 45 ... microphone, 46 ... A / D converter, 47 ... bus, 51 ... CPU, 52 ... a Les unit, 54 ... communication unit, 55 ... speaker, 56 ... D / A converter, 57 ... bus, L1 ... signal line

Claims (4)

A plurality of fire detectors and a fire receiver are connected via a signal line, and a plurality of sound collecting means for collecting ambient sound and transmitting the sound to the fire receiver and the fire receiver include the signal. In fire alarm equipment connected via wire ,
The fire receiver is
Signal transmission for performing polling of sensor information collection for collecting status information of a plurality of fire sensors, and performing polling for collecting status information of the sound collecting means for collecting status information of the sound collecting means after the polling of the sensor information collection Cycle the signal transmission for one cycle to monitor and control the plurality of fire detectors and the sound collecting means, and collect and display the status information of each fire detector. ,
Fire alarm system you characterized in that the output fire is based on the sound signal transmitted from the sound collecting means when it is detected. The fire receiver determines whether there is a person who has escaped by determining whether or not the sound signal transmitted from the sound collection means when a fire occurrence is detected includes a signal indicating a person's voice, The fire alarm equipment according to claim 1 , wherein the determination result is displayed. Which is connected with the fire receiver via the signal line, a plurality of acoustic output means for outputting an alarm sound or alarm message in response to a command alarm output from the fire receiver, corresponding to the sound collecting means and comprising a plurality of acoustic output means that are provided,
The fire receiver is
Based on the correspondence table of the fire detector, the sound collecting means, and the sound output means, the sound detector and the sound output means corresponding to the fire detector that has detected a fire are identified,
A speaker device that outputs a sound signal received from the specified sound pickup means, and a microphone device that transmits a sound signal to be output to the specified sound output means. The fire alarm facility according to claim 1 or 2 . Which is connected with the fire receiver via the signal line, a plurality of acoustic output means for outputting an alarm sound or alarm message in response to a command alarm output from the fire receiver, corresponding to the sound collecting means and comprising a plurality of acoustic output means that are provided,
The fire receiver is
It is determined whether there is a person who is late by deciding whether the sound signal transmitted from each sound collection means when the occurrence of a fire is detected includes a signal indicating a person's voice. And the sound output means corresponding to the sound collection means based on the correspondence table of the sound collection means and the sound output means,
A speaker device that outputs a sound signal received from the specified sound pickup means, and a microphone device that transmits a sound signal to be output to the specified sound output means. The fire alarm facility according to claim 1 or 2 .

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