JP3140530B2 - Fire alarm system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fire receiver, a terminal device such as a repeater and a sensor connected to the fire receiver, and a fire device provided with a controlled device such as a fire door or a local sound device. More particularly, the present invention relates to transmission of a fire signal and a control signal between these terminal devices and a fire receiver.

[0002]

2. Description of the Related Art Conventionally, a terminal device such as a repeater and / or an analog fire detector is called by a fire receiver, and the state of the terminal device is set between the called terminal device and the fire receiver. The following is known as a so-called polling type fire alarm system for exchanging information (fire information, state information of controlled devices, etc.) and control information. (1) The fire receiver sends out a call start signal, and each terminal device, upon receiving the call start signal, returns state information at the timing assigned to each terminal device, and the fire receiver sends the call start signal to the terminal device. When a control command needs to be sent, a control signal is sent at the timing assigned to the terminal device after the call start signal is sent. (2) The fire receiver sends an address signal of the terminal device to be called and a command to return the status information or a control command to the controlled device. For a terminal device whose address signal matches the own address, if the received command is a return command. For example, the status information is returned to the fire receiver, and if it is a control command, the controlled device is controlled and the status information is returned to the fire receiver. (3) In the above item (2), the self-address of the terminal device is added to the return signal so that the fire receiver can identify the terminal device from which the return command is issued.

[0003] As described above, the conventional polling type fire alarm system is mainly configured with a fire receiver, and information is not directly exchanged between repeaters or analog type fire detectors. When exchanging information between repeaters, it had to be performed via a fire receiver. This is because, as described above, the timings at which the terminal devices transmit signals are all determined by the fire receiver.

SUMMARY OF THE INVENTION In view of the above, the present invention provides a method for directly transmitting and receiving information not only between a fire receiver and a terminal device such as a repeater or an analog fire detector, but also between terminal devices. Is what you do.

[0005]

According to the present invention, there is provided, in accordance with the present invention, a fire receiver and various terminal devices connected to the fire receiver. In a fire alarm system that calls a device or sends a control command, both the fire receiver and the terminal device are given equal address numbers so as to identify each other, and the signal is sent. The fire receiver or the terminal device transmits a signal by adding a destination address signal to a self-address signal as a transmission source and information signals such as command information and return information, and transmits the signal, and receives the signal. Alternatively, a fire alarm system is provided in which the terminal device performs a discriminating process on a received information signal when an address signal of a destination in a received signal matches the own address. .

According to the present invention, the fire receiving apparatus includes a fire receiver and a plurality of repeaters connected to the fire receiver, the relays being connected to various terminal devices. The fire alarm system calls the repeater or sends a control command for fire monitoring. In the fire alarm system, both the fire receiver and the repeater have equal address numbers so that they can be distinguished from each other. The fire receiver or the repeater, which sends a signal, sends a signal by adding a destination address signal to a self-address signal as a transmission source and information signals such as command information and return information. In addition, the fire alarm receiver or the repeater that receives the signal is configured to discriminate the received information signal when the address signal of the destination in the received signal matches the own address. The equipment is provided.

Further, each of the repeaters stores a report destination address storing an address of another repeater to be interlocked when a fire is detected based on a signal from the terminal device connected to the repeater. Area and, when detecting a fire based on a signal from the terminal device connected to the self, to notify the fire receiver and to the other repeater stored in the storage area of the notification destination address When a fire is detected based on a signal from the terminal device connected to itself and another repeater, a notification unit for making a report is linked with any device connected to the repeater. The storage area of the interlocking control storing whether to control, and when the fire is detected based on the signal from the terminal device connected to the self, or the notification from the notification means of another repeater, Means for controlling the corresponding device based on the contents of the storage area of the interlocking control when fired, whereby the fire alarm which directly performs the interlocking control without passing through the fire receiver when a fire is detected Facilities are also provided.

[0008]

[Function] In this way, repeaters, analog fire detectors,
In addition to the terminal devices such as fire detectors with addresses, address numbers are assigned to the fire receivers to which these terminal devices are connected in the same way as the terminal devices. The address of the fire receiver as well as the address of the fire receiver is the source address. Also, the signal sent from the terminal device is not only the address of its own, but also the address signal of the receiver of the signal. In addition to exchanging fire information and control information between the device and the terminal device, it is possible to exchange fire information and control information between the terminal devices. As a result, even if a break occurs in the signal line between the fire receiver and the terminal device, or even if the fire receiver breaks down, transmission and reception of fire information and control information between the terminal devices are performed. And interlocking operation between terminal devices becomes possible.

Further, even when all the equipments are in a normal state, the terminal equipment that has detected the fire sends out the fire information to the fire receiver and sends out the fire information and / or the interlocking control information directly to the related terminal equipment. Therefore, the burden on the fire receiver can be reduced in the event of a fire.

[0010]

An embodiment of the present invention will be described below.
FIG. 1 is a diagram showing a system configuration of a fire alarm system according to the present invention. A plurality of main repeaters, that is, child receivers 12 to 14 are connected to a fire receiver, that is, a central receiver 11. . Central receiver 11, main repeaters 12-1
Reference numeral 4 denotes a main loop signal line 21 for transmitting a signal in one direction and a sub-loop signal line 22 for transmitting a signal in the other direction.
They are connected in a loop by system signal lines. Controlled devices and the like are connected to the main repeaters 12 to 14 via various sensors and normal repeaters. In the illustrated example, the monitoring repeater 3 is connected.
1. Control repeater 32, gas leak repeater 33, analog fire detector (photoelectric, ionization, thermal, etc.) 34, display 36, normal smoke detector 41, differential detector 42,
Controlled equipment 51 such as a constant temperature sensor 43, a terminator 44, a district sound device (district bell) 46, a transmitter 48, a fire door closing device and a smoke exhaust damper opening device, a gas leak detector 61,
Etc. are shown connected. In addition, each main repeater 12 ~
A display / operation device 71 can be detachably connected to 14. By connecting the display / operation device 71 to the main repeater, commands and the like originally sent from the central receiver 11 can be sent from the display / operation device 71 via the main repeater, and The data to be displayed on the receiver 11 can be displayed on the display / operation device 71 via the main relay.

A central receiver 11 and a plurality of main repeaters 12
To 14 are sequentially and equally assigned addresses, and a polling signal is transmitted between the central receiver 11 and the main repeaters 12 to 14 via both the main loop signal line 21 and the sub loop signal line 22. , A return signal, and other various signals are exchanged. In this case, the same signal always flows through both the main loop signal line 21 and the sub-loop signal line 22. That is, the central receiver 11 or the main repeaters 12 to 1
4 transmits the same signal to both the main and sub loop signal lines at the same time. Therefore, the central receiver 11 and each of the main repeaters 12 to 14 always receive the same signal on both the main loop signal line 21 and the sub loop signal line 22, and receive the signal from the main loop signal line 21 side. in case of,
If only the signal on the main loop signal line 21 side is actually taken into the central receiver or the slave receiver, that is, the main repeater, for signal processing, and reception from the main loop signal line 21 side is lost due to abnormality such as disconnection, The signal received on the sub-loop signal line 22 is taken into the central receiver or the main repeater.

With this configuration, normally, in accordance with the polling signal from the central receiver 11 via the main loop signal line 21, the slave receivers, that is, the main repeaters 12 to 14 take in signals from various sensors and monitor the fire. And returns the result to the central receiver 11, or
When a fire is detected, the central receiver 1
The operation of a controlled device such as a fire door is controlled by a command from the control unit 1. On the other hand, by assigning an address to the central receiver 11, signals can be transmitted and received between the main repeaters without the intervention of the central receiver 11, if necessary.

FIG. 2 shows the main repeater or child receiver 12.
In FIG. 2, an MPU is a microprocessor, a ROM 11 is a program storage area storing programs for operations and the like described later in FIG. 3, and a ROM 12 is a self-address storage. Area. In addition, it is assumed that the self address is set and stored.
Switches such as a dip switch may be used. RO
M13 is a district bell connected to the main repeater,
A storage area for an interlocking control table of controlled terminal equipment such as a fire door, a device that is to be interlocked and controlled based on fire monitoring information from a monitoring terminal device connected to the main relay, and another main relay. When a fire is detected, the device connected to the main repeater and to be controlled interlocked is stored (see FIG. 6). The ROM 14 is a storage area of a report destination address. When the monitoring terminal device connected to the main repeater detects a fire condition, other main relays that should report a fire signal to the central receiver 11 other than the central receiver 11. When the main repeater has contents that the main repeater wants to report to another main repeater or the like, the address of the report destination or the like is stored. In addition to the operation described in the flowchart below, the address of the report destination relay device, etc., the device to be controlled by the report destination relay device, and the control content may be set. May be stored together).
The RAM 11 is a work area, the RAM 12 is a storage area for status information of various terminal devices connected to the main repeater (whether a fire has occurred, the current status of the controlled device, etc.), RA
M13 is a storage area of a source address of a received signal, and stores a source address of the signal when the signal is received from a fire receiver or another main repeater (this source address is the status information Or the report destination address when the response signal is returned). The RAM 14 is a storage area for the contents of the report, and not for transmitting and receiving signals by polling with the normal central receiver 11, but for other cases, for example, for transmitting and receiving signals between main repeaters. It is stored when needed. In this case, the contents of the report are
The destination address (for example, the address of the main repeater that requires interlocking control) for the specific destination stored in the storage area ROM 12, the self-address stored in the storage area ROM 12, and the storage area R
The notification information (for example, a fire signal) stored in the OM 13 is stored. The TRX 11 includes a parallel-serial converter, a serial-parallel converter, and a main loop signal line 21 or a sub-loop signal line 22 for transmitting signals between the central repeater and another main repeater. A transmission / reception unit having a loop-back circuit or the like for connecting the main loop signal line 21 and the sub-loop signal line 22 to form a loop-back path when a disconnection or the like occurs;
X12 includes a sub-repeater connected to the main repeater, that is, a parallel-serial converter, a serial-parallel converter, and the like for transmitting a signal between a lower-order repeater and an analog fire detector. Transmitting and receiving unit.

FIG. 3 shows a format of a signal to be transmitted. In FIG. 3, STC is a start code, RAD is a report destination address, TAD is a source address (self address), and CM is information. Code and E
ND is an end code.

The operation in FIGS. 1 and 2 will now be described with reference to FIG.
4 and FIG. 5 showing the operation of the main repeater, that is, the slave receiver.

The central receiver 11 is connected to each of the main repeaters 12 to 14
Are polled for each of the main repeaters 12-1.
Reference numeral 4 generally indicates, in response to a polling signal from the central receiver 11, environmental status information (sensors such as smoke density and temperature) from an environmental monitoring terminal device such as a fire detector connected to the main repeater. Level) (step 12)
6). The central receiver 11 receiving the state information of the environment,
The presence or absence of a fire is determined based on the state information.

As shown in FIGS. 4 and 5, the main repeater, that is, the child receiver, constantly monitors signal reception for itself, that is, for the main repeater itself (step 102). 11 and a signal from another main repeater. If no signal is received for itself (N in step 102 or N in step 104), state information from the terminal device connected to the main repeater is read and updated and stored in the storage area RAM 12 (step 106). Based on the information stored in the storage area RAM 12, it is determined whether or not a fire has occurred (step 108) and whether or not it is necessary to contact another relay (step 110).

When the monitoring terminal device connected to the main repeater detects a fire condition, it is desired that the storage region ROM 14 directly notify the fire condition without passing through the central receiver. Of the main repeater, and the address of the report destination of the main repeater when there is a content that the main repeater wants to contact or report to another main repeater or the like. Therefore, when it is determined that a fire has occurred based on the information stored in the storage area RAM 12 (Y in step 108), the report destination address of the fire signal is read from the storage area ROM 14 (step 112), and the report destination is set. The address is set to RAD, the self address is read from the storage area ROM 12, the transmission address is set as the source address TAD, and the fire signal is created as the information code CM to form a transmission signal format, which is stored in the storage area RAM 14 (step 114). ).

The linked table storage area ROM 13 has
As shown in FIG. 6, when a fire signal is received from the monitoring terminal device connected to the main repeater or from another main repeater, any controlled device connected to the main repeater is linked. Whether to control is stored in the form of a table, the controlled device connected to the main repeater is shown in the upper horizontal column, and the main repeater number that detected the fire is shown in the left vertical column. Or the address is shown. The interlocking table in the storage area ROM 13 shown in FIG. 6 is for the second main repeater as shown by a circle, and therefore,
Hereinafter, the operation for the second main repeater will be described. If it is determined that the second main repeater has a fire (Y in step 108), the above-described storage area RAM
14 to store the format of the transmission signal (step 11
Subsequently to 4), the control content for the second main repeater is read out from the storage area ROM 13 and the corresponding device, that is, the district bell, fire door, smoke outlet, etc. with "1" standing in FIG. Is controlled (step 115).

It is not a fire occurrence (step 108).
N) If it is determined that it is necessary to contact another relay device (Y in step 110), similarly, the report destination address RAD from the storage area ROM 14, the self address TAD from the storage area ROM 12, the contact content CM, In the same manner, a format of the transmission signal is created and stored in the storage area RAM 14 (step 116). Note that the contact content may be generated based on information stored in the storage area RAM 12, for example.

At steps 114 and 116, the storage area RA
The contents of the notification stored in M14 are the signal processing (Step 11) performed when a signal is received for the second main repeater (Y in Step 102 and Y in Step 104).
Using the idle time after 8 to 136), the signal is transmitted to the signal line (steps 138 to 144).

If a signal is received for the main repeater, that is, the child receiver (Y in step 104), the source address that transmitted the received signal is read from the TAD of the format of the received signal, and is read from the storage area RAM13. (Step 118) and the received content CM
Is decrypted (step 120).

Based on the result of decoding the received content CM,
The presence / absence of a fire signal (step 122) and the presence / absence of a control command (step 124) are discriminated. If neither is present, this means that the command is a status information return command from the central receiver 11. The stored source address, that is, the address of the central receiver 11 is the report destination address RAD, the self address is the source address TAD, and the status information of the terminal device updated and stored in the storage area RAM 12 is the information code CM. ,
A transmission signal having the format shown in FIG. 3 is created and transmitted to the transmission path (step 126). After the transmission, the contents of the storage area RAM 13 are cleared (step 13).
6).

When the transmission signal transmitted in this way is received by the central receiver having the address stored in the storage area RAM 13, the central receiver determines that the address is from the RAD to its own address. Therefore, the source address TAD and the information code CM are fetched.

As a result of decoding the received content CM by the second main repeater (step 120), if there is a fire signal (Y in step 122), this is determined in step 114 by the other main repeater. Means that the contents of the report addressed to the main repeater stored in the storage area R have been transmitted in steps 138 to 144.
The transmission source address stored in the AM 13 is a report destination address RAD, the transmission source address is TAD, and a response signal is added as an information code CM to create a transmission signal in the format shown in FIG. By transmitting the response signal to the main relay, a response signal is returned to the main repeater (step 128). Then, based on the interlock table of the storage area ROM 13 shown in FIG.
The control content corresponding to the main repeater at the transmission source address is read to control the corresponding device (step 130).
The contents of the storage area RAM 13 are cleared (step 1).
36). For example, when the transmission source is the third main repeater, “1” is selected from the controlled devices connected to the second main repeater.
FIG. 6 shows that an emergency exit door, a fire door, and the like on which the vehicle is standing are controlled.

As a result of the second main repeater decoding the received content CM (step 120), if there is a control command (Y in step 124), this is the control command from the central receiver 11 for the controlled device, Or means a control command, such as a test command, or at step 116 in another main repeater.
This means that the contents of the report addressed to the second main repeater stored in the storage area RAM 14 have been sent out in steps 138 to 144. First, as described above, the source address stored in the storage area RAM 13 is set as the report destination address RAD, the source address is set as TAD, and the response signal is added as the information code CM.
After transmitting a response signal to the transmission source main repeater by creating a transmission signal in the format shown in (1) and transmitting it to the transmission path (step 132), the central receiver or another main repeater returns the response signal. Control processing is performed in accordance with the sent control command (step 134), and then the contents of the storage area RAM 13 are cleared (step 136).

After decoding the received content and performing a corresponding control operation in accordance with the decoded content, the content stored in the storage area RAM 14 is transmitted in step 114 or 116, and the transmission is performed. After the storage area RA
The contents of M14 are cleared (steps 138 to 14).
4) Then, the process returns to the first signal reception waiting state in step 102.

In FIGS. 4 and 5, the main repeater receives a call from the fire receiver or another main repeater in step 104, and sends the call to the fire receiver or the main repeater in steps 126 and 128. When the signal is returned in steps 132 and 132, if there is information (for example, a fire signal) to be reported to the fire receiver or the repeater, the information is also reported to the fire receiver or the repeater in steps 138 to 144. However, when there is information to be reported, the information may be transmitted when the transmission signal is not flowing through the signal line.

FIGS. 4 and 5 show flowcharts for transmission and reception of transmission signals between the fire receiver and the main repeater and between the main repeaters. It is also possible to transmit signals in the same manner between terminal devices such as normal repeaters such as devices 31, 32, and 33) and analog fire detectors. The same applies to the case where terminal equipment such as is connected to the fire receiver without going through the main repeater.

Further, in FIG. 2, an input device such as a numeric keypad is provided in the main repeater, and the ROMs 12 to 14 are
For example, a rewritable storage device such as a RAM with a backup power supply that can retain the stored contents even when the power supply is cut off due to a power failure or the like. You may make it input from input devices, such as a ten key.

[0031]

As described above, according to the present invention, not only terminal equipment such as a repeater, an analog fire detector, and a fire detector with an address but also a fire receiver to which these terminal equipment are connected can be used as a terminal equipment. Similarly, an address number is assigned, and the signal transmitted from the fire receiver uses not only the address of the terminal device of the report destination but also the address of the fire receiver as the source address.
Also, not only the own address but also the address signal of the receiver of the signal is added to the signal sent from the terminal device, so only the transmission and reception of fire information and control information between the fire receiver and the terminal device are performed. In addition, fire information and control information can be directly transmitted and received between the terminal devices, so that even if the signal line between the fire receiver and the terminal device is disconnected, Even if a failure occurs, an interlocking operation between the terminal devices and the like can be performed, so that there is an effect that the function of the entire equipment is not impaired.

Further, even when all the equipments are in a normal state, the terminal equipment which has detected the fire sends out the fire information to the fire receiver and sends out the fire information and / or the interlocking control information directly to the related terminal equipment. Therefore, there is also an effect that the burden on the fire receiver can be reduced in the event of a fire.

[Brief description of the drawings]

FIG. 1 is a system diagram showing a fire alarm system according to one embodiment of the present invention.

FIG. 2 is a block circuit diagram showing an internal circuit of the main repeater of FIG.

FIG. 3 is a diagram showing an example of a transmission signal format used in the present invention.

FIG. 4 is a flowchart for explaining the operation of the main repeater in FIG. 1;

FIG. 5 is a flowchart for explaining the operation of the main repeater in FIG. 1;

FIG. 6 is a diagram showing a storage format of a linkage table storage area ROM13.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Central receiver 12-14 Main repeater 21, 22 Loop signal line 31-71 Various terminal equipment MPU1 Microprocessor ROM11 Storage area of programs etc. ROM12 Storage area of self-address ROM13 Storage area for interlocking table ROM14 Storage area of report destination address RAM11 Work area RAM12 Storage area for status information of various terminal devices RAM13 Storage area for source address RAM14 Storage area for report contents STC Start code RAD Report destination address TAD Source address CM Information code END End code

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) G08B 26/00 G08B 17/00

Claims (3)

(57) [Claims] 1. A fire receiver including a fire receiver and various terminal devices connected to the fire receiver, wherein the fire receiver calls the terminal devices or sends control commands for fire monitoring. In the alerting equipment, the fire receiver or the terminal device that equally assigns an address number to both the fire receiver and the terminal device so as to be able to identify each other and sends out a signal may be a self-transmitting device. An address signal and an information signal such as command information and return information are added to a destination address signal to transmit the signal, and the fire receiver or the terminal device receiving the signal transmits the address of the destination in the received signal. A fire alarm system that discriminates a received information signal when the signal matches its own address. 2. A fire receiver comprising: a fire receiver; and a plurality of repeaters connected to the fire receiver, the repeaters being connected to various terminal devices. In a fire alarm system that calls the repeater or sends a control command, both the fire receiver and the repeater are given equal address numbers so that they can be distinguished from each other, and a signal is sent. The fire receiver or the repeater to send out sends a signal by adding a destination address signal to a self-address signal as a transmission source and information signals such as command information and return information, and receives a signal. A fire alarm system in which the fire receiver or the repeater discriminates a received information signal when an address signal of a reception destination in a received signal matches its own address. 3. Each of the repeaters stores a report destination address that stores an address of another repeater to be linked and controlled when a fire is detected based on a signal from the terminal device connected thereto. Area and, when detecting a fire based on a signal from the terminal device connected to the self, to notify the fire receiver and to the other repeater stored in the storage area of the notification destination address When a fire is detected based on a signal from the terminal device connected to itself and another repeater, a notification unit for making a report is linked with any device connected to the repeater. The storage area of the interlocking control that stores the control or not, when a fire is detected based on a signal from the terminal device connected to the self, or when the notification is received from the notification unit of another repeater And means for controlling a corresponding device based on the contents of the storage area of the interlocking control, whereby when the fire is detected, the interlocking control is directly performed without passing through the fire receiver. Fire alarm equipment.