Communications: electrical – Condition responsive indicating system – With particular system function
Reexamination Certificate
1999-06-10
2001-08-28
Pope, Daryl (Department: 2632)
Communications: electrical
Condition responsive indicating system
With particular system function
C340S506000, C340S507000, C340S524000, C340S525000, C340S531000, C340S533000
Reexamination Certificate
active
06281791
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a fire alarm system, and more particularly to a fire alarm system in which a plurality of terminal devices for fire supervision such as fire detectors or transmitters to which different addresses are given, respectively, are connected to a fire control and indicating equipment (or a fire alarm panel).
2. Description of the Related Art
In general, in a fire alarm system, a plurality of terminal devices for fire supervision such as fire detectors or transmitters to which different addresses are given, respectively, are connected to a fire control and indicating equipment, and the fire control and indicating equipment calls the terminal device by its address so as to collect fire information from the called terminal device or to send an instruction to the called terminal device if necessary.
Also, there is, for example, a fire alarm system having accumulating means which judges that there is a fire when the fire control and indicating equipment collects the fire information from a plurality of terminal devices for fire supervision such as a fire detector or a transmitter in succession, and collects, when the collected fire information is information from which it is judged that a fire occurs, the fire information from which it is judged that a fire occurs from the terminal device over a given period of time. The fire alarm system of this type is generally furnished with a standby power supply ready for emergency such as service interruption.
Incidentally, in the case of the conventional fire alarm system of this type, addresses are allocated to all of plural terminal devices for fire supervision which exist in the supervision area of the fire alarm system, and the fire alarm panel calls all of those addresses to collect fire information. Therefore, the collected information increases as much as the number of supervised terminal devices, as a result of which there arises such a problem that an MPU that processes the information, indicator means and so on are large-scaled, the structure becomes complicated and the costs are increased. Also, there arises such a problem that it is difficult to conduct a judgement on a fire and an alarm processing on the basis of only the collected information in processing the fire information relating to the-supervision area.
Also, the furnished standby power supply is connected to the fire control and indicating equipment so that the operation of the former is supervised by the latter. However, the supervising contents are to merely check whether the standby power supply is operative, or not, resulting in such a problem that the contents of the standby power supply cannot be finely supervised.
SUMMARY OF THE INVENTION
The present invention has been made to solve the above problems with the conventional system, and therefore an object of the present invention is to provide a fire alarm system which specifies the number of terminal devices in a supervision area and sets a plurality of fire zone indications corresponding to the specified number of terminal devices by one to one, thereby making it possible to simplify the structure and reduce the costs.
Another object of the present invention is to provide a fire alarm system high in reliability which is capable of finely supervising the contents of a standby power supply connected to a fire control and indicating equipment.
In order to achieve the above objects, according to a first aspect of the present invention, there is provided a fire alarm system in which a plurality of terminal devices for fire supervision to which different addresses are allocated, respectively, are connected to a fire control and indicating equipment, and the fire control and indicating equipment calls the terminal device by its address to collect fire information from the called terminal device, wherein the fire control and indicating equipment includes a plurality of fire zone indicating means corresponding to the plurality of terminal devices by one to one.
A second aspect of the present invention is achieved by the provision of a fire alarm system according to the first aspect of the present invention, wherein the addresses are allocated in serial numbers to the plurality of terminal devices, respectively, and the same zone numbers as the addresses are allocated to the plurality of fire zone indicating means in succession.
A third aspect of the present invention is achieved by the provision of a fire alarm system according to the first or second aspect of the present invention, wherein the fire zone indicating means comprises a fire zone lamp, an abnormal zone lamp and a zone indication board.
A fourth aspect of the present invention is achieved by the provision of a fire alarm system according to the third aspect of the present invention, wherein there is provided discriminating means for discriminating the fire information collected from the terminal devices, and when the discrimination result of the discriminating means is indicative of abnormality except fire, the abnormality contents are indicated by the abnormality zone lamp.
According to a fifth aspect of the present invention, there is provided a fire alarm system in which a plurality of terminal devices for fire supervision to which different addresses are allocated, respectively, are connected to a fire control and indicating equipment, and the fire control and indicating equipment calls the terminal device by its address to conduct at least one of the collection of fire information from the called terminal device and/or the sending of an instruction to the called terminal device, wherein address setting means is provided in each of the plurality of terminal devices, and the fire control and indicating equipment comprises storing means for storing the addresses to be set on the plurality of terminal devices, address collecting means for paging the plurality of terminal devices in succession to collect the addresses set by the address setting means from the called terminal device, address discriminating means for discriminating whether the addresses collected by the address collecting means are addresses stored in the storing means, or not, and indicating means for indicating a discrimination result when the address discriminating means discriminates that the collected addresses are addresses different from the addresses stored in the storing means.
A sixth aspect of the present invention is achieved by the provision of a fire alarm system according to the fifth aspect of the present invention, wherein the fire control and indicating equipment is provided as the indicating means with a plurality of indicator lamps corresponding to the plurality of terminal devices by one to one, the storing means stores the addresses of the terminal devices connected to the fire control and indicating equipment in correspondence with the plurality of indicator lamps therein, and the indicating means controls the lighting of the indicator lamps corresponding to the addresses stored in the storing means when the discriminating means discriminates that the collected addresses are addresses different from the addresses stored in the storing means.
According to a seventh aspect of the present invention, there is provided a fire alarm system in which a fire control and indicating equipment has storing means for collecting fire information from a plurality of terminal devices for fire supervision in succession, and judging that there is a fire when collecting fire information from which it is judged that a fire occurs from the terminal device over a predetermined period of time, in the case where the collected fire information is information from which it is judged that a fire occurs, wherein different classification information depending on the classifications of the terminal devices is allocated to the plurality of terminal devices, and the fire control and indicating equipment includes fire state judging means for judging that there is a fire immediately when collecting the fire information collec
Nohmi Bosai Ltd.
Pope Daryl
Wenderoth , Lind & Ponack, L.L.P.
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