JPS607594A - 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〕 Kihatsu 91 relates to a self-fire alarm system.

[Background technology]

Conventionally, there is a self-fire alarm system in which a certain accumulation time is set from the time the detector is activated, and the receiver performs the reception operation for the first time while the detector is operating after the accumulation time has elapsed, and displays 1 alarm and 2 alarms. This type of fire alarm system has the disadvantage that the discovery of a fire is delayed by the amount of accumulation time.To overcome this disadvantage, there is also a dual-signal receiver that issues a preliminary warning; It was necessary to install all stages of sensitive, two-signal sensors, which inevitably increased the cost of the sensors and the wiring work for the sensor lines.

[Purpose of the invention]

The wood invention was made in view of the above-mentioned drawbacks, and its purpose is to provide a self-fire alarm system that can prevent non-fire alarms, detect fires early, and is inexpensive. be.

[Disclosure of the invention]

Figure 1 shows a schematic diagram of an embodiment of the wooden invention.
A in the figure is a receiver, and a sensor line t is derived from this receiver A, and a smoke detector (1a) is connected to this sensor line t.
, a sensor such as a heat sensor (1b) is connected, and 5
A DC voltage is applied to the sensor line t via the receiver A's built-in receiving relay RyTh. B in the diagram is the storage means,
This storage means B is for the purpose of completely cutting off the sensor line t before the built-in receiving relay Ry turns on when any of the sensors operates, so that the receiving relay Ry does not operate. If there is a sensor operation, set a certain accumulation time from that point, and during that accumulation time, cancel the reception operation of the above-mentioned receiving relay R4, and detect at a predetermined time after the accumulation time wo#= has elapsed. If there is a signal operation, the receiving relay R4 is activated and the main bell (2) or district bell (
3□) (3□) etc. are operated and displayed.

In the figure, (41), (4□), etc. are address signal transmitting circuits for sensor discrimination, which are installed corresponding to each sensor. . . . is for absorbing the individually assigned ATTO signal as a unique frequency signal when the corresponding sensor operates, and superimposing and transmitting the unique frequency signal to the sensor line t. (5) receives the unique frequency signals transmitted by the address signal transmitting circuits (4,), (4□), .

Based on this determination, the address display of the sensor in question and the line in Figure 2 are based on the circuit of the receiver A111I. In the figure, (6) is the constant voltage circuit part (7) is the line voltage detection circuit part,
(8) is the switching circuit section, (91 is the high sensitivity sushi),
(101 first timer circuit section, !I11 is a second timer circuit section, these circuits constitute storage means B. Q2+ is a receiving circuit section, (+31 is a signal processing circuit section,
f+41 is the address display section, 051 is the alarm alarm,
These circuits constitute an address display unit.

R, a resistor connected in series to the smoke detector (la) (or heat sensor (lb)), which generates a voltage across #5 when the smoke detector C1a) (or U heat detector r1b)) turns on. This is used as the power supply voltage for the address signal generating circuit (41).

However, if a certain smoke sensor B(la) is malfunctioning, the sensor line t is short-circuited through the resistor R1, and the line pressure on the sensor line t reaches the voltage across the resistor R1. This voltage across both ends is applied to the address signal transmission circuit, for example (
41). The atmos multiplier transmitting circuit (4□) to which power is applied transmits a predetermined unique frequency signal as an address signal in a superimposed manner on the sensor line.

This carried t@ signal is received and demodulated by the receiving circuit section [12] coupled to the capacitor C of the address display unit (5), and the demodulated signal is subjected to frequency discrimination by the signal processing circuit section (+31), The address of the device is determined.Based on this determined address, the address is displayed and an alarm buzzer (16) is sounded.

- The force accumulating means B detects a decrease in line voltage fi- in the line voltage detection circuit section (71) and generates a force before the slow-operating receiving relay R7 operates. After the receiving demodulation, the sensitive relay (
9) Switching circuit part (8)? Operation through the sono relay contact R. and separate it. This relay contact r. Since the sensor line t is inserted in series with the common line drawing of the sensor line t, the line is cut off, causing the operation of the receiving relay Ry to slow down. When the switching circuit section (8) turns on, the first timer circuit section (10) starts one time-limited operation, and the switch jig circuit section (8) starts the time-limited operation.
) to maintain the oscillating motion. Therefore, like the smoke detector (1a), it takes η to restart after the line is restored.
・Regardless of whether it is a thermal sensor or a thermal sensor that operates continuously mechanically, it is impossible to operate the receiving relay R4 while the first timer circuit (lO) is operating.
Therefore, false alarms due to temporary malfunctions can be prevented. Now, when the first timer circuit section (lO) times up, the second timer circuit section (11) starts one cut, and the timer circuit section (11+) keeps the switch jig circuit section (81 in the OFF state) until the timer circuit section (11+) times up. Therefore, if the operation of the sensor is not a temporary malfunction, the sensor operates even when the switching circuit section (8) is turned on, so that the sensor, resistor R1, and 0@ column circuit Current continues to flow through the sensor line t through the receiving relay RV.
will work. The receiving relay Ry has a self-holding circuit modified with one contact (not shown), and a sequence circuit not shown (not shown) rings the main bell (2) and the district bell (convex), indicating the occurrence of a fire, and making history. continuous fire bashing
This activates the system to exhaust smoke to extinguish the fire.

〔Effect of the invention〕

Since the present invention is equipped with the storage means configured as described above and the address display unit, the storage means can prevent non-fire alarms due to temporary malfunction of the sensor, and the delay in issuing the alarm due to the storage means can also be prevented. Since the address can be displayed at least by the address display unit at the same time as the sensor is operating, the location of the single alarm sensor can be known, and the administrator can confirm the situation. There is no surefire way to do this, the cost is low, and there is no need to worry about false alarms, such as differential heat detectors.

[Brief explanation of drawings]

@ Figure 1 is a schematic overall diagram of an embodiment of the present invention, Figure 2 is the same main circuit and lock, (la) is a smoke detector, (
lb) is a heat sensor, ξ4□), (42), . . . are address signal generating circuits, (6) is an address display unit, A is a receiver, and B is a storage means. Agent Raf Rishishi Ishi 1) Choshichi

Claims (1)

[Claims] (]) An address for sensor identification that generates a separate address signal depending on the operation of a sensor connected to the sensor line, such as a smoke detector or a heat sensor, and transmits it via the sensor line. A transmitting circuit is provided corresponding to each sensor, and on the receiver side, when the sensing operation of the sensor is detected, the receiver receives i! IIJ work +
an accumulation control means for setting an accumulation time ff to cancel the cancellation, and causing the receiver to perform a reception operation by sensing operation after the accumulation time elapses; and displaying the address of the sensor in the sensing operation by determining reception of the address signal. What is claimed is: 1. A self-fire alarm system, characterized in that the self-fire alarm system is equipped with an address display means for performing at least the following.