JPH0259998A - Disaster prevention display system - Google Patents

Abstract

PURPOSE:To display fire exclusive information and to obtain a disaster prevention display system having high reliability by equipping each distributed indicator with a fire information transmitting terminal, a fire exclusive information transmitting terminal, and a signal switching circuit. CONSTITUTION:Each distributed indicator 3 has fire exclusive information transmitting terminals RB and SB to transmit fire exclusive information sent from a computer 4 and fire information transmitting terminals RA and SA to transmit fire information from a repeater 2, and for each distributed indicator 3, a signal switching circuit 5 for selectively transmitting the fire information and the fire exclusive information to another distributed indicator 3 on a next step by a switching command signal sent from the repeater 2 is provided. Consequently, the fire information is preferentially displayed on the distributed indicator 3 when the fire occurs, the fire exclusive information sent from a computer side is displayed when the fire does not occur. Further, when a part of a signal line connected extending over plural distributed indicators is disconnected, a signal transmission switching circuit 5 is actuated, and the fire information is successively transmitted through a fire exclusive signal transmission line to the distributed indicator 3 on a rear step. Thus, the disaster prevention display system having high reliability can be obtained.

Description

[Detailed description of the invention] [Industrial application fields] The present invention relates to improvements in disaster prevention display systems.

[Conventional technology] Recently, in order to display fire information on each floor of a building, a repeater with multiple fire detectors connected to a monitoring line is connected to a disaster prevention receiver via a signal line. A disaster prevention display system has been developed in which a plurality of distributed indicators are connected to each other and each repeater is attached.

Fig. 6 shows the basic configuration of such a disaster prevention display system, in which a disaster prevention receiver 100 is installed on the first floor of a building, and repeaters 101 installed on each floor are connected to the disaster prevention receiver 100.
A multiplex transmission line is constructed by connecting the signal trunk lines ρ, and the repeaters 101 on each floor are connected to distributed displays 102 installed on the walls of the electric heater hall, nurse station, service room, etc. on each floor. When any of the fire detectors S, such as analog type, connected to the monitoring line 6S connected to the monitoring line 6S led out from the repeater by connecting the required number of..., a distributed indicator installed on each floor 102... fire end +
83 is displayed.

However, in such conventional systems, the distributed displays can only display fire information when a fire occurs, and the signal lines connecting multiple distributed displays are
If a problem such as a disconnection occurred in the gR, fire information could not be transmitted to the distributed display connected after the disconnection point, which caused problems in terms of reliability.

[Problems to be Solved by the Invention] The present invention has been made in view of the above circumstances, and it is possible to display information other than fire on the distributed display when there is no fire, and it is also possible to display information other than fire on the distributed display. The purpose of this invention is to provide a highly reliable disaster prevention display system that can transmit fire information to the next stage of distributed display even when a wire is broken in some part.

[Means for Solving the Problems] The present invention proposed to achieve the above object connects a plurality of disaster prevention repeaters to a signal main line connected to a disaster prevention receiver, and transmits signals derived from each of these repeaters. This is an improvement of the disaster prevention display system that can display fire information by connecting multiple fire detectors to the monitored line and adding multiple distributed displays to each repeater. Each of the devices has a fire information transmission terminal consisting of an input and output terminal for transmitting fire information sent from the computer, and an input and output terminal for transmitting fire information from the repeater. It has an external information input terminal,
The fire information sent from the repeater is sequentially transmitted from the non-fire information input terminal of the repeater through the first signal line to the non-fire information input terminal of the distributed display, and finally to the computer. The non-fire information connected to the fire information input terminal and sent from the computer is sequentially transmitted from the non-fire information output terminal of the computer to the non-fire information transmission terminal of the distributed display via a second signal line. Finally, it is connected to the non-fire information input terminal of the computer, and furthermore, each of the distributed display devices is connected to the fire information and the fire information on the next stage distributed display device by a switching command signal sent from the repeater. The IK configuration is provided with a signal switch @y3 for selectively transmitting external information.

[Operation] In the system of the present invention, when a fire occurs, fire information is displayed with priority on the distributed display, and when no fire occurs, non-fire information sent from the computer side is displayed.

In addition, if a part of the signal line connected across multiple distributed display devices is disconnected, the signal transmission switching circuit is activated and fire information is transmitted to the subsequent distributed display device via the fire signal transmission path. .

[Example J An embodiment of the system of the present invention will be described below.

Although FIG. 1 shows a configuration example in which two distributed displays are installed for convenience of explanation, in a normal system, a plurality of distributed displays are connected.

A disaster prevention receiver 1 is connected to a disaster prevention repeater 2 via a signal trunk line 1 to form a multiplex transmission path. A plurality of sensors S... are connected to the monitoring line ρS derived from the disaster prevention repeater 2.

On the other hand, each of the distributed display devices 3 has a non-fire information input terminal composed of an input terminal RA and an output terminal SA, and an input terminal RB.
and an output terminal SB, and a signal transmission switching circuit 5 is provided therein.

Further, the computer 4 has a fire information input terminal CI for inputting fire information sent from the repeater 2 through the distributed display 3, and a fire information input terminal CI for inputting the fire information sent from the repeater 2 through the distributed display 3.
. . , and a non-fire information input terminal C3 for inputting the non-fire information sent through the distributed display 3 .

The disaster prevention repeater 2, the distributed display 3, and the computer 4 are:
Connected as shown in the figure, fire information is sent to the first signal line 1.
1, non-fire information is cross-connected by the second signal line 12 to form a fire information and non-fire information transmission path.

In other words, the first signal line 11 constitutes a fire information transmission path from the repeater 2 to the fire information input terminal of the computer 4 by sequentially connecting the non-fire information input terminals RA and SA of the distributed display 3. , the second signal line β2 is output from the non-fire information output terminal C2 of the computer 4 to the non-fire information transmission terminal RB of the distributed display 3.

The SBs are successively connected to form a non-fire information transmission path leading to the non-fire information input terminal C3 of combination 1-4.

FIG. 1a shows the configuration of the signal transmission switching circuit 5 provided in each distributed display 3. This signal switching circuit 5 is configured as a data selector, and the signal transmission switching circuit 5 is configured as a data selector, and the signal transmission switching circuit 5 is configured as a data selector. In response to the switching command signal CT, the fire information input from the fire information input terminal RA or non-fire information input terminal RB
The non-fire information inputted from the non-fire information output terminal SB
The configuration is such that the signal is selectively output to the non-fire input terminal RB of the distributed display device at a later stage.

Figures 2 and 3 show the external configuration of the distributed display unit 3 and display examples of the display screen. The figure shows an example of a display screen in the event of a fire, showing the location of the fire.

The display screen 31 of such a distributed display 3 is composed of a CRT, an LCD, a plasma display, or the like.

Next, the basic operation of the system of the present invention will be explained.

Detectors S... constantly detect temperature changes and smoke concentration, as in the case of a normal fire system, and a monitoring line β is connected to these sensors from the repeater 2 side using a polling method.
Information is exchanged via S, and the data received by the repeater 2 is further sent to the disaster prevention receiver 1 to determine whether or not a fire has occurred.

When there is no fire, the monitoring operation is performed in this state, and the non-fire information sent from the computer 4 at this time is sent to each distributed display 3 from the non-fire information output terminal c2.
On the distributed display 3 side, the non-fire information sent from the computer 4 side is displayed on its display screen 3I.

In case 2, non-fire information includes information on events in the building.
You can send information such as fake news, crime prevention information, weather forecasts, room temperature, humidity, and other news.

However, when the disaster prevention receiver 1 determines that a fire has occurred, the screen 3 of the distributed display 30 switches to fire information as shown in the third garden, and a message indicating the location of the fire and guidance for safety hazards is displayed. Is displayed.

Here, on the distributed display 3, fire information is displayed with priority over non-fire information, so if a fire occurs, the non-fire information sent from the computer 4 is interrupted and replaced. The fire information sent from the repeater 2 side is displayed on the screen 31.

Next, the operation of the signal switching circuit will be explained.

In the distributed repeater 3 of the present invention, even if a part of the first signal line AI that transmits fire information is disconnected, fire information is sequentially transmitted to the subsequent distributed display in the following manner.

As shown in FIG. 4, if a disconnection occurs in the part (a) of the signal line 11 that connects the distributed repeaters 3... 3 (#1), fire information is sent to the second distributed display 3 (#2), but even if the fire information is transmitted to the second distributed display 3 (#2), the second distributed display 3 (#2), so the repeater 2 connects the output terminal SA of the non-fire information input terminal of the first distributed display 3 (#]) and the second distributed display 3 (#2). It is determined that a disconnection has occurred between the input terminals RA of the non-fire information input terminals, and the repeater 2 sends a switching command signal to the signal transmission switching circuit 5 of the first distributed display 3 (#1).

When the signal transmission switching circuit 5 is constituted by a data selector, the repeater 2 sends out a signal that sets CT to the "L" level (normally, the signal is at the rHJ level and is transmitted from RA to SA).

Then, fire information is transmitted from repeater 2 to first distributed display 3 (#
1) Input terminal RA of non-fire information input terminal → Output terminal SA of non-fire information transmission terminal of first distributed display 3 (#1)
→ Input terminal RB of the non-fire information transmission terminal of the second distributed display 3 (#2) → Output terminal SB of the non-fire information transmission terminal of the second distributed display 3 (#2) → Non-fire of the computer 4 At this time, the computer 4 knows that there is a failure in the fire information transmission path by inputting fire information from the non-fire information input terminal C3.

As shown in Figure 5, the disconnection occurs in the final stage distributed repeater 3.
(#2) and computer 4 fire: j4 fl iF3 input terminal of signal line 11 ([:7) If the signal line 11 occurs in the ([:7 part), the repeater 2 is the first distributed display 3 (#]), the second Distributed Display 3 (#2>), and then fire information is sent to Computer 4, but since there is no reply even after transmitting the fire information to Computer 4, Repeater 2 sends the last stage Distributed Display 3 (#2).
It was determined that there was a disconnection between 2) and computer 4,
The repeater 2 sends a switching command signal to the signal transmission switching circuit 6 of the final stage distributed display 3 (#2).

Then, the fire information sent from repeater 2 is transmitted to repeater 2.
→ Input terminal RA of the non-fire information input terminal of the first distributed display 3 (#1) → Its output terminal SA → Second distributed display 3
Non-fire information input terminal RB of (#2) → Output terminal SB of non-fire information transmission terminal of second distributed display 3 (#2) →
The fire information is sent through the non-fire information input terminal C3 of the computer 4, and at this time, the computer 4 knows that there is a failure in the fire information transmission path by inputting the fire information from the non-fire information input terminal C3.

[Effects of the Invention] According to the system of the present invention, it is possible to obtain a convenient disaster prevention display system with high added value that can display non-fire information sent from a computer on a distributed display during non-fire situations. It is possible to provide a highly versatile disaster prevention display system that can display fire information on all distributed display devices even if a break occurs in the crossover wiring.

[Brief explanation of the drawing]

Fig. 1 is a basic configuration diagram of the system of the present invention, Fig. 1a is an example of a signal transmission switching circuit, Figs. Figure 4,
Figure 5 is an explanatory diagram of the operation when a break occurs in the crossover wiring of the distributed display, Figure 6 is the basic configuration diagram of the disaster prevention display system, and Figure 7 is the connection ff2 line of the distributed display in the conventional disaster prevention display system. An example diagram is shown. [Explanation of symbols...Disaster prevention receiver 2...Disaster prevention repeater S...Fire detector 3...Dispersion display 4...Computer 5...Signal switching circuit RA, SA...Outside fire Information transmission terminals RB, SB...Fire information input terminals!・・・Signal main line S β 2 C] ・・Monitoring line・・First signal line・Second signal line・・Fire information input terminal・・Fire information output terminal・・Fire t'I! information input terminal

Claims (1)

[Claims] 1) A plurality of disaster prevention repeaters are connected to a signal main line connected to a disaster prevention receiver, and a plurality of fire detectors are connected to a monitoring line derived from each of these repeaters, and In a disaster prevention display system that can display fire information by adding multiple distributed displays to each repeater, each of the distributed displays has input and output that transmits non-fire information sent from a computer. It has a non-fire information transmission terminal consisting of a terminal, and a fire information transmission terminal consisting of an input terminal and an output terminal for transmitting fire information from the repeater, and fire information transmitted from the repeater. is sequentially connected from the input terminal of the fire information transmission terminal of the repeater to the fire information transmission terminal of the distributed display via a first signal line, and finally to the fire information input terminal of the computer; The non-fire information sent from the computer is sequentially passed from the non-fire information output terminal of the computer via the second signal line to the non-fire information transmission terminal of the distributed display, and finally to the non-fire information input terminal of the computer. Further, each of the distributed display devices includes a device for selectively transmitting the fire information and non-fire information to the next distributed display device in response to a switching command signal sent from the repeater. A disaster prevention display system configured with a signal switching circuit.