JPH0235593A - Self-fire alarm system - Google Patents

Abstract

PURPOSE:To prevent the increase of an operating current when plural alarms are given by latching fire detected information, cutting off power supply to a sensor element part, and releasing the latched information by a repair signal from a receiver. CONSTITUTION:An alarm giving signal from a sensor element part 10 is outputted to a sensing processing part 11. While the sensing processing part 11 latches the information, the sensing processing part 11 turns off a switching part 14 and cuts off the power supply to the sensor element part 10. The latch data of the alarm giving information is sent from a multiplex transmission processing part 12 to the receiver. The sensing processing part 11 releases the latch data by the repair signal from the receiver, and simultaneously, the sensing processing part 11 drives the switching part 14 into an ON-state and supplies the power from a power source part 13 to the sensor element part 10.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a self-fire alarm system using multiplex transmission that has unique 7 addresses and issues an alarm when polled from a receiving rock when a fire is detected. It is.

[Prior art 1] Fig. 3 shows the liI diagram of a self-fire alarm system, in which the contact points are short-circuited and the operating current flows when a fire is detected.
1 point type -t=n? In addition to the 5zs2 and Kono 110 contact type sensor S, it has a unique 7 address and receives I/I! The base end of #I2 is a multiplex transmission type self-fire alarm system in which sensors with addresses A S , , A S , which issue an alarm when polled from #11 are co-connected on #12. It is connected to the reception 1f11, and a terminator 3 is connected to the end of the line 2. In this example, two 110 contact type sensors Sl, 82 and two 7-dressed sensors A
S , , A S , are connected, but the number is not limited.

As shown in Fig. 4(a), line <1 is a boring signal band that constantly polls addressable sensors AS,... and monitors the operation of 110 contact type sensors SI... It consists of a signal band. Conventional sensor with address A
When an alarm is detected, S is an operating current (sometimes only an operating current of the sensor element).

) flows up to the polling signal band as shown in FIG. 4 (bl), and when receiver 1 detects transmission in the polling signal band,
Control processing is performed to cut the operating current of the sensor. Further, as shown in FIG. 4(e), when another addressed sensor AS generates an alarm, multiple alarms during the polling interval cause the operating current to be applied by W, as shown in FIG. 4(d). This is a disadvantage in terms of transmission and power supply design.

[Problems to be Solved by the Invention] The present invention has been provided in view of the above-mentioned points, and aims to stabilize line current by preventing an increase in operating current due to multiple alarms. The system provides a self-fire alarm system with

[Means for Solving ff11 Problem 1 The present invention provides a sensor element section for detecting fire, and an 'i4 source supplied to this sensor element section'! ! The signal from the Lfi section and the sensor element section causes a fire and f! 4. A sensing processing section that latches the information when the power is disconnected and simultaneously cuts off the power supply from the electric section a to the sensor element section, and multiplex transmits the signal from the sensing processing section to the receiver. The sensor is composed of a multiplex transmission processing section that drives the sensing processing section with a recovery signal from the controller to release the latch and restore the power supply.

[Action 1: When a fire is detected, the sensing processing unit transmits the information
At the same time, cut off the power supply to the sensor element,
Blocks the operating current inside the sensor element section, multiplexes the latch data from the multiplex transmission processing section to the receiver, and uses the recovery signal from the receiver to drive the sensing processing section and release the latch information. At the same time, the power supply to the sensor element section is restored.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings. 1st
The figure shows a block diagram of a sensor AS with an address, and includes a sensor element section 1° that detects fire or smoke, a sensing processing section 11 that receives an alarm signal from the sensor element section 10 and latches the information, and a sensing Treatment jl! A multiplex transmission processing section 12 that multiplex transmits the latch data from l511 to the receiving ff18!1 via line 2, a power supply section 13 that supplies power to the sensor element section 10, and a switch section 14 that turns TA on and off. It is made up of etc.

Now, as shown in FIG. 2(b), the addressable sensor AS
When a fire is detected in step 1, an alarm signal is output from the sensor element 110 to the sensing processing section 11. The sensing processing unit 11 uses that information to detect a fire! 84, the information is latched and at the same time, a signal is output to the switch section 14 to turn off the switch section 14, and the sensor element section 1 is turned off.
Cut off the power supply to o. In other words, the operating current of the sensor element section 10 is immediately stopped due to the internal error processing of the addressed sensor AS1 (Fig. 2(d)), and the latch data of the alarm signal is stored in the next polling signal band. The signal is transmitted and sent from the multiplex transmission processing section 12 to the receiver 1. Then, in the recovery processing from the receiver 1, the recovery signal is sent from the multiplex transmission processing section 12 to the sensing section 8! The sensing processing unit 11 uses the signal to release the latch data, and at the same time turns on the switch unit 14 to supply power from the power supply unit 13 to the sensor element unit 10, making it possible to re-report. Bring it back. Incidentally, as shown in FIG. 2(e), the same situation occurs when the address sensor AS, followed by the 7 address sensor 8 S, detects a fire, and although the operating current flows, the second [(d ), the operating current of the addressed sensor AS is stopped, so the operating current is jMW
, and the detection signal will be transmitted to the receiver 1 in the next polling signal band as described above.

[Effect of the Invention J As described above, the present invention includes a sensor element section that detects a fire, a power supply section that supplies power to the sensor element section, and a system that detects a fire based on a signal from the sensor element section. A sensing processing section that latches the information and simultaneously cuts off the power supply from the 1c source section to the sensor element section, multiplex transmits the signal from the sensing processing section to the receiver, and sends a recovery signal from the receiver. The sensor consists of a multiplex transmission processing section that drives the sensing processing section to release the latch and restore power, so when a fire is detected, the sensing processing section latches the information and also transmits the information to the sensor element section. The I/& source is fully supplied to block the operating current inside the sensor element section, and the receiver data is multiplexed from the multiplex transmission processing section for recovery from the receiver. The signal drives the sensing processing unit to release the latch information and restores the power supply to the sensor element. Therefore, detection, cutting of operating current, and multiplex transmission processing are performed within the sensor. Therefore, there is no increase in line current, and there is no increase in current consumption due to multiple alarms from the sensors.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a sensor according to an embodiment of the present invention, FIG. 2 is an operational waveform diagram of the same as above, FIG. 3 is a configuration diagram of a self-fire alarm system, and FIG. 4 is an operational waveform diagram of a conventional example. 1 is a receiver, 2 is a line, 10 is a sensor element section, 11 is a sensing processing section, 12 is a multiplex transmission processing section, 13 is an electric fi
Department. , Agent Patent Attorney Ishi 1) Chief 1- Figure 3 Figure 4 Figure 2 (d) i Shuden Falls

Claims (1)

[Claims] (1) In a self-fire alarm system having a plurality of sensors each having a unique address and detecting fire, smoke, etc., and a receiver connected to a line and detecting a fire using multiple transmission signals from the above-mentioned sensors, A sensor element section that detects a fire, a power supply section that supplies power to this sensor element section, and a sensor element that latches information when it is determined that there is a fire based on the signal from the sensor element section, and a sensor element that supplies power to the sensor element section. The sensing processing section simultaneously cuts off power supply to the sensing processing section, multiplex transmits signals from the sensing processing section to the receiver, and drives the sensing processing section with a recovery signal from the receiver to release the latch and restore power. A self-fire alarm system characterized in that the above-mentioned sensor is constituted by a multiplex transmission processing unit that performs multiple transmission.