JPH07306989A - Automatic fire alarm equipment - Google Patents

Abstract

PURPOSE:To perform the required display without being controlled by a fire receiver by allowing a discrimination means to take in the information on a signal line and discriminate the contents to be displayed, controlling a display means by the discrimination means. CONSTITUTION:A display device 3A is directly connected to signal lines S+ and S- through which a fire receiver 1 and a fire sensor 2 transmit and receive coded signals. The display device 3A directly fetches the information such as fire signals through the signal lines S+ and S-. A transmission circuit (TRX) 31 is directly connected to the signal lines S+ and S-. A discrimination circuit 32 fetches the information on the signal lines S+ and S-through the circuit 31. The contents to be displayed is discriminated to control a display control part 33. As the result, the part 33 performs the required display on a display part 34.

Description

Detailed Description of the Invention

[0001]

This invention relates to an automatic fire alarm system,
In particular, the present invention relates to a display device which is used in such an automatic fire alarm system and can perform a necessary display without being controlled by a fire receiver.

[0002]

2. Description of the Related Art FIG. 3 is a block diagram showing a fire receiver, a fire detector and a display as an example of a conventional automatic fire alarm system. In the figure, reference numeral 1 denotes a fire receiver, which is installed in, for example, a disaster prevention center (not shown) on the first floor of a building such as a building, and is a fire detector as a plurality of terminal devices arranged on each floor of the building. It is electrically connected to the (DE) 2 and is also electrically connected to a plurality of display devices 3 arranged on each floor of the building or the like to display the fire monitoring state.

The fire receiver 1 has, as its internal unit, a main unit 11 for controlling the entire automatic fire alarm system including the fire receiver 1, and a main unit 11 electrically connected to the main unit 11. A plurality of fire detectors 2 which are directly connected to the display / operation unit 12 capable of input / output and the main unit 11 and are electrically connected
And the like, and a transmission circuit 13 for transmitting information and commands, and similarly to this transmission circuit 13, electrically connected to the main unit 11 to output information and commands to a plurality of display devices 3 to perform necessary display. And a display control unit 14 for controlling the display.
The transmission circuit 13 is electrically connected to the required number of the fire detectors 2 described above by two signal lines S + and S-.

The main unit 11 includes a storage device ROM1 for storing a program, a microprocessor MPU1 for controlling the entire automatic fire alarm equipment according to the program stored in the ROM1, and a work storage device RAM.
1 and the interfaces IF1 to IF3 for inputting / outputting information and commands to / from the display / operation unit 12, the transmission circuit 13, and the display unit control unit 14.

The display / operation unit 12 is an input / output control unit 121 composed of a microprocessor or the like (not shown), and by being controlled by the input / output control unit 121, a screen display of an LCD or the like (not shown) or an LED. A display unit 122 for performing status display (not shown), an operation unit 123 including various switches (not shown) for performing test input to the fire receiver 1 and control input such as sound stop / recovery operation, and an input. The output control unit 121 has a buzzer 124 or the like for issuing a main alarm or a preliminary alarm when controlled by the output controller 121.

The conventional fire receiver 1 is constructed as described above. Now, when a fire occurs inside the building, and the fire detector 2 that detects the occurrence of this fire generates a fire signal, this fire is detected. The signal is transmitted to the transmission circuit 13 of the fire receiver 1 through the two signal lines S + and S-. The fire signal, that is, the information, is collected or taken into the MPU 1 from the transmission circuit 13 via the IF 2, and the floor-based processing or the like is performed here. As a result, the MPU 1 sends a command via the IF 1 and the input / output control unit 121 of the display / operation unit 12 to cause the display unit 122 to display a screen and a status display of a fire occurrence, and to ring a buzzer 124. Let Furthermore, M
The PU 1 can display a detailed situation of a fire on each display device 3 by sending a command, for example, a display signal via the IF 3 and the display device control unit 14.

[0007]

In a conventional automatic fire alarm system, a fire receiver has a transmission circuit including a group of terminal devices including a plurality of fire detectors and a group of display units including a plurality of displays. Since the control is performed via the display control unit and the display unit, the structure of the internal unit becomes complicated, and the main unit itself also needs an IF, which is a problem. Then, this invention is made | formed in order to solve such a subject, and an object of this invention is to obtain the automatic fire alarm equipment which can perform a required display, even if it is not controlled by a fire receiver.

[0008]

The automatic fire alarm system according to claim 1 of the present invention is directly connected to a signal line connecting a fire receiver and a fire detector, and information such as a fire signal generated by the fire detector. It is equipped with a display that directly captures the information and displays the fire occurrence status. Further, the automatic fire alarm system according to claim 2 of the present invention includes a state detection unit that detects a state change based on a coded signal of a signal line connecting the fire receiver and the fire detector, and the state detection unit via the state detection unit. A display device is provided for displaying information such as a fire occurrence status by taking in information such as a fire signal generated by the fire detector.

[0009]

According to the present invention, the discriminating means discriminates the contents to be displayed by taking in the information on the signal line, and the display means is controlled by the discriminating means to perform the necessary display.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the accompanying drawings. 1 is a block diagram showing a first embodiment of an automatic fire alarm system according to the present invention. In this embodiment, a signal line S + through which a fire receiver 1 and a fire detector 2 transmit and receive a coded signal. The display 3A is directly connected to S- and S-. That is, the display device 3A of the present embodiment is
Information such as a fire signal is directly taken in through the signal lines S + and S-, and specifically, the signal lines S + and S-.
The transmission circuit (TRX) 31 is directly connected to the transmission circuit 31. Through the transmission circuit 31, the discrimination circuit 32 takes in information on the signal lines S + and S-, discriminates the contents to be displayed, and controls the display control unit 33. . As a result, the display control unit 33 can cause the display unit 34 to perform a necessary display. In addition,
The transmission circuit 31 and the discrimination circuit 32 constitute discrimination means, and the display control unit 33 and the display unit 34 constitute display means.

Now, when a fire occurs inside the building, and the fire detector 2 that senses the occurrence of the fire generates a fire signal, the fire signal is sent through the two signal lines S + and S-. Be transmitted to. This fire signal is collected from the transmission circuit 13 of the fire receiver 1 to the MPU 1 via the IF 2 as in the conventional example, and at the same time controlled by a microcomputer (not shown) via the transmission circuit 31 of the display 3A. It is also collected in the discrimination circuit 32. As a result, display 3A
The discriminating circuit 32 can discriminate necessary display contents and display the situation of fire occurrence on the display unit 34 via the display control unit 33.

FIG. 2 is a block diagram showing a second embodiment of the automatic fire alarm system according to the present invention. In this embodiment, the fire receiver 1 and the fire detector 2 send and receive coded signals. A state detection unit, such as a magnetic field detection unit 11, having a coil around the signal lines S + and S- that detects a magnetic field change as a state change due to a coded signal as an induced current.
0 is provided. That is, the display device 3B according to the second embodiment receives the signal via the magnetic field detector 110 provided around the signal lines S + and S-.
The determination circuit 32 takes in information on the signal lines S + and S- and determines the contents to be displayed through [the same as the transmission circuit (TRX) 31 of FIG. 1], and the same as in the first embodiment. Then, the display control unit 33 is controlled. The receiving circuit 31B and the judging circuit 32 constitute the judging means of the second embodiment.

[0013]

As described above in detail, the present invention is directly connected to the signal line connecting the fire receiver and the fire detector,
Since a display device was installed to directly capture information such as the fire signal generated by the fire detector and display the fire occurrence status,
Alternatively, a state detection unit that detects a state change based on a coded signal of a signal line connecting a fire receiver and a fire detector, and information such as a fire signal generated by the fire detector is captured via this state detection unit. Since the display device for displaying the fire occurrence status and the like is provided, it is possible to determine and display the necessary display content without being controlled by the fire receiver.

[Brief description of drawings]

FIG. 1 is a block diagram showing a first embodiment of the present invention.

FIG. 2 is a block diagram showing a second embodiment of the present invention.

FIG. 3 is a block diagram showing an example of a conventional automatic fire alarm system.

[Explanation of symbols]

 1 Fire receiver S +, S- signal line 2 Fire detector 3A, 3B Display

Claims (5)

[Claims] 1. A plurality of fire detectors which are arranged in various places of a building and generate a fire signal when a fire is detected, and the fire detectors are connected by signal lines to collect and control information by a coded signal. In an automatic fire alarm system including a fire receiver for performing a fire alarm, a display device is provided which is directly connected to the signal line and directly captures information such as the fire signal to display a fire occurrence status. Automatic fire alarm equipment. 2. A plurality of fire detectors which are arranged in various places of a building and generate a fire signal when a fire is detected, and the fire detectors are connected by signal lines to collect and control information by coded signals. In an automatic fire alarm facility equipped with a fire receiver for performing, a status detection unit that detects a status change based on the coded signal of the signal line, and information such as the fire signal is captured via the status detection unit. An automatic fire alarm system, which is equipped with a display for displaying the fire occurrence status, etc. 3. The display device includes: a determination unit that captures information on the signal line and determines the content to be displayed; and a display unit that is controlled by the determination unit and performs a necessary display. The automatic fire alarm system according to claim 1 or 2. 4. The discrimination means comprises a transmission circuit directly connected to the signal line and a discrimination circuit connected to the transmission circuit, and the display means comprises a display control section controlled by the discrimination circuit. The automatic fire alarm system according to claim 3, wherein the automatic fire alarm system comprises a display unit that is displayed by the display control unit. 5. The discriminating means comprises a receiving circuit for receiving a signal from a state detecting section for detecting a state change around the signal line, and a discriminating circuit connected to the receiving circuit, and the display means. The automatic fire alarm system according to claim 3, comprising a display control unit controlled by the discrimination circuit and a display unit displayed by the display control unit.