JPH08263761A - Fire alarm system and method for discriminating abnormality in the system - Google Patents

Abstract

PURPOSE: To provide a fire alarm system capable of informing an alarm indicating unregistration when registering work is not executed at the time of connecting a new fire sensor. CONSTITUTION: The fire alarm system is constituted of connecting plural fire sensors 21 to 2n to a fire receiver 1 through a common transmission line L, ID addresses for identifying respective sensors 21 to 2n are allocated to the sensors 21 to 2n so as not to be overlapped and the receiver 1 is constituted of an address storing part 12 for storing the ID addresses of all the sensors 21 to 2n connected to the line L, a physical address storing part 13 for storing all ID addresses of fire sensors to be connected to the line L, a receiving control part 11 for successively accessing fire sensors based upon the ID addresses stored in the storing part 13 and receiving information returned from an accessed sensor, an address collating part 14 for collating the ID address used for the access with the ID addresses stored in the storing part 12, and a display part 10 for displaying an alarm.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fire alarm system having a plurality of fire detectors, and more particularly, a fire alarm system capable of discriminating the connection status of a plurality of fire detectors connected to a common transmission line. Regarding alarm system.

[0002]

2. Description of the Related Art The structure of a conventional fire alarm system is shown in FIG. This fire alarm system uses multiple fire detectors 21
2n are connected to the fire receiver 1 through the same transmission line L. A unique ID address for identifying each of the above-mentioned sensors 21 to 2n is assigned.

The fire receiver 1 includes a reception control unit 11 and
It is composed of a sensor address storage unit 12 and a display unit 10. The detector address storage unit 12 holds the ID addresses of all the fire detectors 21 to 2n connected to the transmission line L, and the reception control unit 11 stores in the detector address storage unit 12. Fire detectors 21 to 2 connected to the transmission line L on the basis of the generated ID address
n is sequentially and cyclically called, and information returned from the called fire detector is received to perform fire determination and system abnormality determination, and the display unit 10 displays the determination result.

That is, when the information about the occurrence of a fire is returned from the called fire detector, if the content of this reply is the information about the occurrence of a fire, the fire alarm is displayed on the display unit 10 while the call is called. On the other hand, when there is no response from the relevant fire detector, an alarm indicating that the fire detector is not connected is displayed on the display unit 10. Therefore, the display unit 10
By the display of, it is possible to take appropriate measures in advance for the unconnected fire detector, so a fire occurs at the installation location of the unconnected detector, and the fire occurrence information is not transmitted to the fire receiver 1. It is possible to prevent the occurrence of defects.

[0005]

However, the conventional fire sensation warning system has the following problems.
That is, in the detector address storage unit 12 in the fire receiver 1, the I address assigned to each of the fire detectors 21 to 2n is assigned.
Since the D address is stored, when the fire detector 2m is newly added to the transmission line L, it is necessary to update the contents of the detector address storage unit 12.

Here, when the detector address storage unit 12 is not updated, that is, when the new fire detector 2m is not registered, the receiver control unit 1 of the fire receiver 1 is used.
1 does not call the added fire detector 2m, so even if the fire detector 2m is installed, even if a fire occurs at this installation location, a fire alarm will be issued. There was a problem that I could not do it.

Furthermore, since the fire receiver 1 cannot detect the existence of the unregistered fire detector 2m, it cannot notify the operator or the system administrator of the above registration error. , The discovery of the above defects will be delayed. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a fire alarm system that notifies an abnormal alarm when an unregistered fire detector is connected.

[0008]

A fire alarm system according to the present invention as set forth in claim 1 is constructed by connecting a plurality of fire detectors to a fire receiver through a common transmission line. Unique ID addresses are assigned to the fire detectors to identify them, and the fire receivers have IDs for all fire detectors connected to the transmission line.
An address storage unit that holds an address, a physical address storage unit that holds all the ID addresses that can be taken by the fire detector that can be connected to the transmission line, and a sequential call based on the ID addresses in the physical address storage unit And a reception control unit for receiving information returned from the called fire detector, and an address matching unit for matching the ID address used for the calling with the ID address held in the detector address storage unit. And a display unit for displaying an alarm.

According to the second aspect of the present invention, there is provided a method for determining an abnormality in a fire alarm system, in which calls are sequentially made and returned based on all possible ID addresses of a fire detector connectable to the transmission line. A means for receiving the information, a means for collating the ID address used for the call with the held ID address, a result of the collation, the ID addresses match, and the fire receiver returns a return signal. If the fire detector is not received, it is determined that the fire detector is not connected. On the other hand, if the result of the above collation is that the ID addresses do not match and the fire receiver receives the return signal, the fire detector It is constituted by a discriminating means for discriminating unregistered.

[0010]

In the fire alarm system according to the present invention as set forth in claim 1, the reception control section sequentially makes a call based on the ID address held in the physical address storage section,
Upon receiving the returned information, the address collation unit collates the ID address used for the above-mentioned call with the ID address held in the sensor address storage unit, and a fire is connected based on the result of the collation. Display the unconnected alarm or unregistered alarm of the sensor on the display.

In the fire alarm system according to the second aspect of the present invention, the reception control unit sequentially makes a call based on the ID address held in the physical address storage unit and receives the returned information, The address collating unit collates the ID address used for the call with the ID address held in the sensor address storage unit, and uses the ID address used for the call and the held ID.
If the address matches, and the fire receiver cannot receive the return, it is determined that the fire detector is not connected, and the ID address used for calling and the held ID address are If they do not match and the fire receiver receives the return, it is determined that the fire detector is not registered.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an example of the construction of a fire alarm system according to the present invention described in claims 1 and 2. This fire alarm system is configured by connecting a plurality of fire detectors 21 to 2n to the fire receiver 1 via the same transmission line L. The fire receiver 1 includes a reception control unit 11 and a detector address. Storage unit 12, physical address storage unit 13, address collation unit 14, switching unit 15, address collation switch 16
And the display unit 10.

As in the conventional case, the detector address storage unit 12 holds the ID addresses of all the fire detectors 21 to 2n connected to the transmission line L, while the physical address storage unit 13 stores the ID addresses. , Holds all possible ID addresses of the fire detector connectable to the transmission line. An example of data held in the sensor address storage unit 12 is shown in FIG. The ID addresses 1, 3, 6, 7 and the like of the fire detector connected to the transmission line L are stored.

Next, an example of data held in the physical address storage unit 13 is shown in FIG. In the case where the ID address of the fire detector that can be connected to the transmission line L is given as an integer value from 1 to a predetermined value, the ID address 1,
2, 3, 4, 5, etc. are stored. In addition, the address control unit 11 sends an ID address to the transmission line L to call any of the fire detectors 21 to 2n, receives the information returned from the called fire detector, and displays the display unit 10 Displays an alarm for a fire or system malfunction.

This fire alarm system operates in the same manner as a conventional fire alarm system when the address verification switch 16 is off. That is, the sensor address storage unit 12 is connected to the reception control unit 11 by the switching unit 15, and the reception control unit 11 connects to the transmission line L based on the ID address held in the sensor address storage unit 12. The connected fire detectors 21 to 2n are sequentially and cyclically sent out.

The fire detector 2i (i is any one of 1 to n) called up by sending out the ID address returns information including the presence or absence of a fire, and the reception control section 11 sends this return signal. Upon reception, the display unit 10 displays a fire alarm based on the received information. At this time, when the reception control unit 11 cannot receive the return signal, it is determined that the fire detector 2i is not connected, and the display unit 10 displays an alarm indicating that the fire detector 2i is not connected.

Next, the operator operates the fire alarm switch 16
When is operated to turn on, the switching means 15 connects the physical address storage unit 13 to the reception control unit 11, and the reception control unit 11 stores the ID stored in the physical address storage unit 13. Make a call based on the address. That is, regardless of which fire detector is actually connected to the transmission line L, all ID addresses that may be connected to the transmission line L are transmitted, and if there is return information, Upon receiving this, the ID address used for calling and the received information are output to the address collating unit 14.

The address collating unit 14 is the receiving control unit 1 described above.
1 collates the ID address used for calling with the ID address held in the sensor address storage unit 12. As a result of this collation, when the ID address used for calling coincides with the ID address held in the sensor address storage unit 12, and when the reception control unit 11 does not receive the return information, , It can be judged that the registered fire detector is not connected. Here, the registered fire detector is the I in the detector address storage unit 12.
A fire detector that holds a D address.

On the other hand, as a result of the above collation, the ID address used for calling does not match the ID address held in the sensor address storage unit 12,
When the reception control unit 11 receives the return information, it can be determined that the unregistered fire detector is connected to the transmission line L. The display unit 10 displays a non-connection alarm of a registered fire detector or a connection alarm of an unregistered fire detector based on these determination results.

An example of the appearance of the fire receiver 1 is shown in FIG.
The fire detector 1 has a display unit 10 for displaying various alarms.
And an operation unit 17 for performing various operations. The operation unit 17 includes a switch 1 for address verification.
6 is provided, and the display unit 10 has a fire alarm display unit 1
0a, a system abnormality display portion 10b, and the like are provided. In the system abnormality display portion 10b in the figure, a warning indicating that the registered fire detector with the ID address "001" is not connected and a registered fire detector with the ID address "008" are not registered. This is an example of the case where "alarm" is displayed.

[0021]

According to the fire alarm system of the present invention as set forth in claim 1, by providing a physical address storage unit in the fire receiver, all the ID addresses which may be connected to the transmission line can be called. In addition to the above, by providing an address collating unit, it is possible to collate with the address held in the address storage unit, so when an unregistered fire detector is connected to the transmission line, an unregistered alarm is displayed. Can be displayed on.

According to the abnormality judging method of the fire alarm system of the present invention as defined in claim 2, all the ID addresses which may be connected to the transmission line are called and the ID address used for the calling is set. It is possible to determine the connection of the unregistered fire detector to the transmission line by collating with the held ID address. Therefore, when a worker connects a new fire detector and forgets to register it, the worker or system administrator is notified that it is not registered and the fire detector is installed. Regardless, it is possible to prevent the occurrence of a failure due to non-registration that the fire cannot be notified.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration example of a fire alarm device according to the present invention.

FIG. 2 is a diagram showing an example of data held in a sensor address storage unit.

FIG. 3 is a diagram showing an example of data held in a physical address storage unit.

FIG. 4 is a diagram showing an example of an external appearance of a fire receiver.

FIG. 5 is a block diagram showing a configuration of a conventional fire alarm system.

[Explanation of symbols]

 1 ... Fire receiver 10 ... Display unit 11 ... Reception control unit 12 ... Sensor address storage unit 13 ... Physical address storage unit 14 ... Address collation unit L ... Transmission line 21-2n ... Fire detector

Claims (2)

[Claims] 1. A plurality of fire detectors are connected to a fire receiver through a common transmission line, and each fire detector is assigned a unique ID address for identifying each fire detector. The fire receiver sequentially calls up the ID address of the fire detectors, which holds the ID addresses of all the fire detectors connected to the transmission line, and the information returned from the called fire detectors. In the fire alarm system that includes a reception control unit that determines the occurrence of a fire based on the above, and a display unit that displays the fire alarm, the fire receiver has a fire detector connectable to the transmission line. A physical address storage unit that holds all possible ID addresses, and a call when the reception control unit sequentially makes a call based on the ID addresses in the physical address storage unit. Fire alarm system the ID address used characterized in that it is configured with an address matching unit for matching the ID address held in the detector address storage unit to out. 2. A plurality of fire detectors are connected to a fire receiver via a common transmission line, and each fire detector is assigned a unique ID address for identifying each fire detector. The fire receiver holds the ID addresses of all the fire detectors connected to the transmission line, sequentially calls the ID addresses, and a fire occurs based on the information returned from the called fire detectors. In the fire alarm system for detecting a fire, the fire receiver sequentially calls all the ID addresses that can be taken by the fire detector connectable to the transmission line, and the ID addresses used for the call are held and
If the D address matches and the fire receiver cannot receive the return, it is determined that the fire detector is not connected, and the ID address used for calling and the I
A method for determining an abnormality in a fire alarm system, characterized in that when the D address does not match and the fire receiver receives a return, it is determined that the fire detector is not registered.