RU9540U1 - FIRE AND ALARM SYSTEM - Google Patents

Description

Fire and security alarm device

The technical solution relates to security devices that enable the inclusion of alarm sound and light signals, and can be used to signal a fire and unauthorized access to a room through doors or windows.

A device for security and fire alarms / RF patent No. 2032220 /, intended for the protection of rooms equipped with security sensors / interlock cables with electrical contact breakers / and fire detectors. The device also contains sound and light alarm units and memory elements.

Also known device according to the patent of the Russian Federation 620198b9, which uses a piezoceramic sensor, an amplifier, and an amplitude detector,

integrator, decoder, one-shot and display unit. These devices are not reliable enough because they use complex

elements for its implementation.

The closest in technical capabilities to the claimed is a device according to USSR patent 1 1836707, which contains communication units, control units, an analog-to-digital converter, a unit for setting a fire hazardous temperature value, two comparators, a unit

G 08 at 19/00

address settings, control unit, temperature sensors, triggers, l multiplexers, pulse shaper.

However, this device has limited (| g7ktsionny opportunities, since it does not provide an alarm about unauthorized access to a secure room.

The objective of the proposed technical solution is to expand the functionality of the device, providing both fire and burglar alarms.

This is achieved by the fact that the fire and security alarm device comprising a temperature sensor, an analog-to-digital converter, two comparators, a fire hazard setting unit and indication units is characterized in that an amplifier, a third comparator, a security alarm sensor are introduced into it, and the temperature sensor through the amplifier is connected to the one of the inputs of the first comparator, to the second input of which the fire hazardous temperature setting unit is turned on, and the output of the first comparator is connected to

the input of the second comparator, the output of which is connected to the inputs of the light and sound indications of the fire alarm, when

the output of the analog-to-digital converter, the input of which is connected to the amplifier output, is connected to the input of the current temperature display unit, and the security alarm sensor, the input of which is connected to the amplifier output, is connected via the third comparator to the light and sound indication blocks of the security alarm.

The claimed combination of elements and connections allows you to achieve your goal through the use of sensors connected to the display and control two-wire connection, which allows the device to perform several functions at the same time: control the temperature in the protected room, notify about a fire, notify about unauthorized opening of the room.

When studying well-known technical solutions in this technical field, the totality of features that distinguish the claimed object has not been identified. This solution differs from the known ones.

The claimed solution can be implemented on known elements of electronic equipment and is industrially applicable,

The above drawing illustrates the essence of the device. The figure indicates: t - temperature sensor,

2 - amplifier, 3,8,11 - coksharator,

4- unit for setting a fire hazard temperature,

5- analog-to-digital converter,

6- in block, current cycle temperature cycling,

9 - block light indication of the alarm, 10 - block sound indication of the alarm,

12 - fire warning light unit,

13 - block fire alarm sound indication,

14- remote display and control,

15- delay unit,

16-channel fire alarm central warning,

17 - payphone,

18- tape recorder.

The device (fig.) Contains a temperature sensor 1 located in the guarded room, connected through an amplifier 2 to one of the inputs of the comparator 3, the second input of which includes a unit 4 for setting the limit value of the controlled temperature, which is considered to be a fire hazard.

The output of the amplifier 2 through an analog-to-digital converter 5 is connected to the temperature display unit 6, the digital display of which displays the current temperature value in the protected room.

At the same time, the output of amplifier 2 through the security alarm sensor 7 is connected to the input of the co-parator 8, the output of which is connected simultaneously to the security light indication unit 9 and the security alarm sound indication unit 10. The security alarm sensor 7 is a serial connection of electrical contact breakers installed on the windows and doors of the protected premises.

The output of the comparator 3 is connected to the input of the comparator 11, the output of which is connected simultaneously with the block 12 of the light indication of the fire alarm and with the block 13 of the sound indication of the fire alarm.

The display elements of the blocks 6,9,10,12 and 13 are displayed on the display and control panel 14, where switching devices and apparatuses for the operator are also installed.

The output of the comparator 11 is also connected to the wake of the delay unit 15, and its output is connected to the channel 16 of the central warning fire alarm. At the same time, the output of block 15 is connected to one of the inputs of the payphone 17, the tape recorder 18 is connected to the second input, and the city telephone line is connected to the output.

The device operates as follows.

The ambient temperature sensor 1 converts the temperature values into the corresponding voltage values, which is amplified by the amplifier 2 and supplied to the comparator 3, as well as through the analog-to-digital converter 5 to the current temperature indicator display unit 6. The voltage is also supplied through the security alarm sensor 7 and connected to it sequentially comparator 8 into blocks 9 and 10 of the light and sound indication of the security alarm.

 4 In case of unauthorized expansion of the sensor circuit 7, the comparator 8 generates signals arriving at the display and control panel 14 in the form of light / block 9 / and sound / block 10 /

the signal characteristic of this guarded room. In the case of restricted access to the room on the remote control 14, it is possible to disable the alarm signal by the operator.

Korparator 3 at a temperature accepted as a fire hazard, the value of which is set using block 4, gives a signal to the comparator 11, the latter produces signals arriving at the console 14 in the form of a light / block 12 / and an audio / block / 13 / tone signal.

If the source of the fire is not eliminated, the channel 16 of the fire alarm of the central warning and the pay phone 17 are turned on

transmitting the recorded alarm information on the tape recorder 18 according to the given telephone numbers, The moment of connection of the channel 16 and the pay phone 17 is determined by the delay unit 15 and can be adjusted in a wide range.

The proposed device is implemented on elements of the series 176 and 561 using a semiconductor temperature sensor with a linear characteristic; in the temperature range from -40 C to -1-120 0, the device showed reliable operation, its power is provided from an alternating current network of 220 V with automatic switching in case of an accident in the network to an autonomous power supply unit in the form of a battery.

Claims (1)

A fire and burglar alarm device comprising a temperature sensor, an analog-to-digital converter, two comparators, a fire hazard setting unit and indication units, characterized in that an amplifier, a third comparator, a burglar alarm sensor are inserted in it, and the temperature sensor is connected to one from the inputs of the first comparator, to the second input of which the fire hazard setting unit is turned on, and the output of the first comparator is connected to the input of the second comparator, the output of which is connected to the inputs of the light and sound indications of the fire alarm, while the output of the analog-to-digital converter, the input of which is connected to the output of the amplifier, is connected to the input of the current temperature display unit, and the security alarm sensor, the input of which is connected to the output of the amplifier, is connected through the third comparator to the output with blocks of light and sound indication of the security alarm.