JPS63184191A - Self-fire alarm 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 an improvement of a point-address type self-fire alarm system that detects a sensor that has triggered an alarm and outputs an accurate fire indication signal.

[Background technology]

Unlike the conventional line display method (zone display method), this type of point address self-fire alarm system uses a repeater with an address code set for each detector, and uses a multiplex transmission method from the fire receiver. The address code is sent to the repeater of each line, and the receiver side determines the status signal of the sensor that is returned at that time, thereby displaying the corresponding display on the individual fire display device equipped with a display section corresponding to the sensor. The area where the fire broke out can be quickly found by lighting up the area.

Figure 5 shows the connection configuration of the sensors S... and the repeaters R... used in this point-address type self-fire alarm system. Unlike the zone display method shown in Fig. 6, in which a sensor S... is connected between each line L and C, the repeater R
. . . for each sensor S connected to each line L-C.
It is connected in accordance with...

By the way, in such a self-fire alarm system, a monitoring signal transmitted from a fire receiver (not shown) to each repeater R... by a multiplex transmission method is sent to each repeater R...
・There is a problem in creating a program because the configuration must include the address code corresponding to This made the configuration complicated.

[Purpose of the invention]

The present invention was developed in view of the above-mentioned problems of the conventional point-address type self-fire alarm system. The purpose is to provide an information system.

[Disclosure of the Invention] The self-fire alarm system of the present invention proposed to achieve the above object includes a launching switch having a pulse detection circuit, and detecting and outputting a sensor status signal when the switch is turned on. A sensor operation detection circuit equipped with an on-off detection circuit is assigned to each sensor of each line and connected in series, and the sensor scanning pulse sequentially output from the fire receiver to each of the above lines is connected to the above pulse. The sensor status signal is received by the detection circuit, and the latching switches of the sensor operation detection circuit are sequentially turned on, and at this time, the sensor status signal, which is returned from the on/off detection circuit to the receiver side, is determined in correspondence with the sensor scanning pulse. It is characterized by the fact that

〔Example〕

An embodiment of the self-fire alarm system of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 shows the basic configuration of a sensor operation detection circuit which forms the main part of the present invention.

The sensor operation detection circuit 1 includes a latching switch 10 composed of a thyristor or the like. This latching switch 10
Pulse detection circuit 11 for triggering. 0 In the figure, A is a pulse power line that manually applies a scanning pulse to the pulse detection circuit 11, and B is a pulse power line that is configured by combining an on/off detection circuit 12 that detects and outputs a sensor status signal when the lunch switch 10 is turned on. A response line that outputs a sensor status signal from the on-off signal detection circuit 12, X is a pulse output line that transmits and outputs a scanning pulse to a subsequent sensor operation detection circuit (not shown), and C is a line that is common to both A and B. Shows common wire.

To explain the basic operation of this sensor operation detection circuit 1, when a sensor scanning pulse is sent to the input vAA from a fire receiver (not shown), the pulse detection circuit 11 that receives this pulse turns on the latching switch 10. Then, the ON/OFF detection circuit 12 outputs a status signal of the sensor (not shown) to the response line B. In this case, once the on/off detection circuit 12 outputs a false signal from the sensor, it will not output even if it receives a scan pulse until the power is cut off, so if the latching switch 10 is turned on by the scan pulse, ,
The scanning pulse is transmitted to a pulse detection circuit of a subsequent sensor operation detection circuit (not shown), and a state signal indicating the on/off state of the sensor is successively outputted from the response line B. At this time, the fire receiver receives the status signal that is sent back,
The on/off state of the sensor is determined in response to the sensor scanning pulse. The above-mentioned scanning by the fire receiver is performed for each line, and when the 11-line scanning is completed, each sensor operation detection circuit 1 is reset by turning off the power, etc., and at this time, the latching switch is turned off. IO is also turned off.

FIG. 2 is a time chart showing the basic operation when one sensor operation detection circuit 1 is provided on one line configured by connecting a terminator (not shown) to the end. A shows the scanning pulse, B shows the sensor ON signal, and B' shows the OFF signal.

Figure 3 shows multiple sensor operation detection circuits 1 on one line.
. . are provided in multiple stages corresponding to the number of sensors, and FIG. 4 is a time chart illustrating the basic operation in that case. In this embodiment, the terminator 2 is configured to output a signal at a different level from the activation signal of the on/off detection circuit 12, so that it can be distinguished from the activation of the sensor.

In addition, in this example, as a result of outputting n scanning pulses in one scan, the second and fourth on/off detection circuits return an on signal, and from the seventh onwards, the output of terminator 2 is returned. has been done. In this way, on the receiver side, by determining at which scanning pulse the output of the on-off detection circuit 12 is turned on, the number of the sensor turned on can be detected. You can find out which sensor has triggered the alarm in the same way.

Further, in the above embodiment, an example of use as a point address method was explained, but it can also be used as a zone display method that knows only the line where a sensor has triggered an alarm and displays that a fire has occurred on that line. Needless to say.

(Effects of the Invention) As can be understood from the above explanation, according to the self-fire alarm system of the present invention, a point address system can be realized without providing a repeater for each sensor, making it easy to create a program. In addition, the system configuration can be simplified.

[Brief explanation of the drawing]

Fig. 1 is a basic configuration diagram of a sensor operation detection circuit that forms the main part of the present invention, Fig. 2 is a time chart explaining its basic operation, and Fig. 3 is a system configuration of an embodiment of the present invention. Fig. 4 is a time chart explaining its basic operation, Fig. 5 is an explanatory diagram of the wiring of a sensor in a conventional self-fire alarm system using the point address method, and Fig. 6 is a conventional self-fire alarm system using the zone method. This figure shows an explanatory diagram of the wiring of a sensor in a self-fire alarm system. (Explanation of symbols) l...Sensor operation detection circuit 10...Latching switch 11...Pulse detection circuit 12...On/off detection circuit

Claims (1)

[Claims] (1) A latching switch with a pulse detection circuit,
A sensor operation detection circuit, which includes an on/off detection circuit that detects and outputs the status signal of the sensor when this switch is turned on, is assigned to each sensor on each line and connected in series. The sensor scanning pulses sequentially output from the machine to each of the lines are received by the pulse detection circuit, and the latching switches of the sensor operation detection circuit are sequentially turned on. This self-fire alarm system distinguishes the status signal of the sensor and detects whether the sensor is activated or not in response to the sensor scanning pulse.