JPS63136191A - Disaster prevention display system - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to the improvement of a disaster prevention display system, and in particular, the present invention relates to an improvement of a disaster prevention display system, and in particular, a fire signal from a disaster prevention receiver is transmitted to the C of a disaster prevention main display device using a simple configuration.
It is configured so that it can be displayed on the RT screen and, at the same time, can also be displayed on the CRT screen of a simply configured disaster prevention sub-display device connected thereto.

[Background technology]

In the conventional fire display system, the fire signal received from the disaster prevention receiver can be quickly displayed and confirmed even at a location far from the disaster prevention receiver. A disaster prevention display device with the same configuration as the built-in disaster prevention display device is used as a sub-display device,
It is installed and used in a remote location via a signal line.

However, in such a system, as shown in FIG. 10, a disaster prevention display device 103 (
The disaster prevention sub-display device 102 (shown as a sub-CRT display device) receives the signal sent from the transmission circuit 101 of the disaster prevention receiver 100 via the signal line P. Since the receiving circuit 104 is usually provided, the system configuration becomes complicated and the cost increases.

[Purpose of the invention]

The present invention was developed in view of the above circumstances, and an object of the present invention is to provide a disaster prevention display system that can be realized with a simple configuration.

[Disclosure of the invention]

In order to achieve the above object, the present invention has been proposed as a disaster prevention system equipped with a video signal generation circuit that processes a fire signal from a disaster prevention receiver and generates a video signal for displaying necessary fire information on a CRT screen. A disaster prevention device with a simple configuration, which includes a video signal drive circuit attached to the video signal generation circuit of the display device, and a CRT connected to the main display device through a signal line to output the output of this drive circuit. The present invention is characterized in that the fire display is configured to be sent to a sub-display device, and the fire display is configured to be able to be displayed on the CRT screen of both the disaster prevention display device and the disaster prevention sub-display device.

Embodiment An embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 shows the general basic configuration of the system of the present invention, in which a portion 1 surrounded by a dashed line is a disaster prevention display device A (hereinafter referred to as
2 is a CRT device configured to include a CRT 21 for displaying fire information and a drive circuit 22; 3 is an operation unit configured to include a keyboard 31 and an operation display unit 32; 4 is an alarm device configured to include a buzzer 41 that is driven when a fire signal is received and a drive circuit 42 that drives this buzzer 41; 7 is a CRT 21;
This shows a printer device that outputs the displayed content as a hard copy. The control unit 1 is composed of a micro combinator system using a CPU 1a, and includes a RAM 1f and a ROM that store programs and data therefor.
1g, a system controller Ib necessary for information processing of CPtJla, address and data buffers lc, ld, and interfaces 1h to 1j for exchanging information with external devices. Further, 7 is a video signal generation circuit that generates a video signal for displaying the information processed by the CPU 1a on the CRT 21. circuit 2
2 to display necessary fire information on the CRT 21.

Such fire display information is generated by processing the fire signal sent from the disaster prevention receiver C, and therefore the main display device A
The control unit 1 receives a fire signal outputted from the disaster prevention receiver C through the interface 8 (shown as R3232C) when a fire occurs. Note that 1e is an interrupt controller that processes interrupt signals output from the outside as necessary. An example of the external configuration (front view) of the main display device A having such a configuration is shown in FIG. 5, and an example of fire information displayed on the CRT screen 21 is shown in FIG. It shows a group of operation buttons provided for other operations, and in this example, operations such as changing the screen display, erasing the screen, and displaying the stop/operation of the buzzer that sounds in the event of a fire are enabled. In addition, Fig. 8.

Figure 9 shows the external configuration of a composite disaster prevention receiver incorporating main display device A, where A is the main display device shown in Figure 5, and 2a displays the code of the area where the fire occurred. The self-fire alarm display section, 2b is a smoke prevention display section that displays the code of smoke prevention equipment that is controlled in conjunction with the received fire signal, and 2C is a gas leak display section that displays the code of the area where the gas leak has occurred. , 2d is the emergency broadcast/district sound interlocking display section Qe
is the gas leak detector power control unit, 2f is the standard control unit with an operation switch for operating the receiver, 2g is the inspection control unit that opens the closing door and inspects the inside during maintenance,
2h indicates an acoustic panel, 2i indicates a fire alarm telephone storage section, and 2j indicates a printer.

On the other hand, in contrast to the main display device A having such a configuration, in the system of the present invention, the sub display device B has a simple configuration that is connected to the connection terminal CN provided on the main display device A via the video signal line IS. can do.

That is, the sub display device B is the CRT 21 of the main display device A.
(For this reason, the drive circuit 22' and the CRT 21 that receive the control output from the video signal drive circuit 5 provided in the control section 1 of the main display device A) should have the function of simultaneously displaying the fire information displayed on the screen of the main display device A. ', an alarm device 4' (see FIG. 3) may be added as necessary.

FIG. 6 is an example of the external appearance of the sub-display device B having such a simple configuration, corresponding to the main display device A shown in FIG. The structure is small and inexpensive, and includes a buzzer 2a' to stop the buzzer, a buzzer stop switch 2b' to stop the buzzer, and a telephone jack 2C' to communicate with the monitoring center in the event of a fire.

FIG. 2 shows a schematic configuration of the video signal drive circuit 5 that constitutes the main part of the present invention, and in the example shown, the CRT 21.
An example is shown in which a monochrome video signal is displayed on the screen of 21'.

Its basic configuration is that a video signal drive circuit 5 is attached to the rear stage of a video signal generation circuit 7 provided in a control section l of a main display device A, and the video signal generation circuit 7 is connected to a CRT controller 70 . Refresh memory 71 for storing image information to be displayed. A character generator 72 that generates character signals to be displayed on a CRT screen. The configuration includes a video signal synthesis circuit 73 that generates a video synthesis signal for displaying an image generated on a CRT, and a horizontal H3YNC1 vertical synchronization signal VSYNC output from the video signal synthesis circuit 73 and a video signal. Transistors TRI~3 are individually controlled ON and OFF by VIDEO, and C
In the example in Figure 6, which sends control signals to the RT drive circuits 21 and 21', when transistors TRI~3 are OFF, rH
A J level control signal is sent out. The control output from the video signal drive circuit 5 is simultaneously sent to the drive circuits 21 and 21' of the CRT device 2 on the main display device A side and the sub display device B via the terminal CN and the video signal line 1s. There is. Further, although the illustrated example has a configuration that sends out a monochrome video signal, it is also possible to have a configuration that can send out a color video signal, and in this case, it goes without saying that a color control signal is added.

FIG. 3 shows the other side of the system of the present invention,
The main display device A is provided with a synthesis circuit 8 that superimposes the video signal generated by the video signal generation circuit 7 and an alarm signal from an alarm device (not shown in FIG. 3). The fire composite signal synthesized by is the signal 'dp
The configuration is such that the postscript is sent to the connected sub-display device B via the ls. The sub-display device iB is provided with a separation circuit 9 for separating the composite signal sent out in this way, and the alarm signal separated by this separation circuit 9 drives the drive circuit 42' of the alarm device 4'. death,
The buzzer 41' is sounded and the drive circuit 22' of the CRT device 2' is driven by the video drive signal.
It is configured to display necessary fire information on RT21'.

FIGS. 4(a), 4(b), and 4(c) respectively show a video signal and an alarm signal 1 composite signal in this embodiment.

In such a device, there is no need to provide separate wiring for the buzzer signal line from the main display device A to the sub display device B, so the wiring can be omitted. Although not shown, the sub display device B
It is also possible to combine and send out the power-on signals. In this case, the power to the sub-display device B can be turned on only in the event of a fire, so that not only the power dissipation angle can be reduced but also the life of the CRT can be extended.

〔Effect of the invention〕

According to the disaster prevention display system of the present invention, by simply connecting a sub-display device with a simple configuration to the video signal drive circuit of the disaster prevention main display device via a signal line, fire information similar to that of the main display device can be displayed. can be displayed on a CRT screen, so the system can be constructed at low cost.

[Brief explanation of the drawing]

FIG. 1 is a schematic basic configuration diagram of the disaster prevention display system of the present invention, FIG. 2 is a configuration diagram of the main parts of the present invention, FIG. 3 is a diagram of the main part of the other side of the invention, and FIG. A diagram of signal waveforms processed in the embodiment shown in the figure, FIG. 5 is an example of the external configuration of the disaster prevention main display device, FIG. 6 is an example of the external configuration of the disaster prevention sub-display device, and FIG. 7 is a diagram of the external configuration of the disaster prevention display device. The side entrance for displaying fire information, Figure 8 is a front view of a composite disaster prevention receiver configured with a built-in disaster prevention display device, Figure 9 is its side view, and Figure 10 is the configuration side of a conventional disaster prevention display system. Showing mouth. (Explanation of symbols) A...Disaster prevention main display device 1...Control unit 2 of the main display device...CRT device S of the main display device...Video signal drive circuit B...Disaster prevention sub display device C ...Disaster prevention receiver IS...Signal line Fig. 4 (a) Fig. 5/A Fig. 6 Fig. 8 Fig. 9

Claims (2)

[Claims] (1) The video signal generation circuit of the disaster prevention main display device has a video signal generation circuit that processes the fire signal from the disaster prevention receiver and generates a video signal that displays necessary fire information on the CRT screen. A signal drive circuit is attached, and the output of this drive circuit is sent via a signal line to a disaster prevention sub-display device of a simple configuration comprising a CRT which is retrofitted to the main display device. A disaster prevention display system characterized in that the display is configured to be able to be displayed on a CRT screen of both a disaster prevention display device and the disaster prevention sub-display device. (2) The disaster prevention main display device is a synthesis circuit that combines an alarm signal from an alarm device that is activated when a fire signal is received from a disaster prevention receiver and a video signal generated to display the fire information. The disaster prevention sub-display device, which is retrofitted and connected to the disaster prevention main display device, has a signal separation circuit that separates the composite signal sent from the synthesis circuit. The disaster prevention display system according to claim 1, wherein the output signal drives an alarm device built in the disaster prevention sub-display device, and displays fire information on a CRT screen.