KR101751960B1

KR101751960B1 - Personal alert safety system for fireman

Info

Publication number: KR101751960B1
Application number: KR1020150176976A
Authority: KR
Inventors: 문원규; 문정우; 이원우; 김현섭; 황준오
Original assignee: 에이스웨이브텍(주)
Priority date: 2015-12-11
Filing date: 2015-12-11
Publication date: 2017-07-03
Also published as: KR20170070324A

Abstract

The present invention relates to a personal safety alarm device for a firefighter capable of mixing an ultrasonic signal with an alarm signal in an audio buzzer when the firefighter does not move for a predetermined time and receiving the ultrasonic signal in the control room to confirm the position of the firefighter And a temperature sensor attached to one side of the fire extinguisher and detecting a temperature of the fire extinguisher, wherein the motion sensor generates a predetermined electrical signal when the movement of the firefighter is not longer than a predetermined time, and transmits the electrical signal to the microcomputer, The microcomputer controls the piezoelectric element driving unit to generate an alarm sound of an audible frequency in the audio buzzer and simultaneously generate an ultrasonic wave so as to check the position of the firefighter in the control room, And a ground that serves as a ground. Wherein the audio buzzer outputs an audible frequency of less than 20 kHz by 90 to 100 dB according to an input signal transmitted to the main electrode through the piezoelectric element driving unit and an ultrasonic wave of 20 kHz or more by an input signal transmitted to the auxiliary electrode .
Accordingly, the personal safety alarm device for a firefighter according to the present invention detects a fire alarm by a motion sensor when a firefighter collapses on the floor due to a collapse of a building, toxic gas suffocation, or the like and does not move for a predetermined period of time, It is possible to easily track the position of the firefighting apparatus by a simple technology structure by generating ultrasonic waves. In addition, the remaining amount of air through the pressure sensor attached to the air box and the ambient temperature confirmed through the temperature sensor are displayed on the LCD display, thereby warning the firefighter immediately.

Description

{Personal alert safety system for fireman}

More particularly, the present invention relates to a personal safety alarm device, and more particularly, to a personal safety alarm device in which when a firefighter collapses on the floor due to a collapse of a building, toxic gas suckling, The present invention relates to a personal safety alarm device for firefighters capable of detecting the location of a firefighter by receiving ultrasonic signals in a control room.

In addition, the present invention relates to a personal safety alarm device for a firefighter capable of promptly notifying a firefighter of a dangerous situation by displaying the remaining amount of air through a pressure sensor attached to an air box and the ambient temperature confirmed through the temperature sensor on a LCD display.

Generally, firefighters dispatched on the spot when a fire occurs are spraying water through the hose from the outside to suppress the fire. When there are injured persons or patients inside the fire site, they enter the fire scene and rescue people.

However, since there is a risk of fire and explosion of high temperature and toxic gas at the site of fire and the structure weakened by high temperature is collapsed, firefighters who entered for life structure suffocate, There is a lot of work to be done on the structure, and in severe cases, the firemen lose their lives. However, there is a problem in that it is difficult to rescue the firefighters who have been injured in a timely manner because it is difficult to identify the location due to smoke or the like at the accident site.

In order to solve such a problem, various methods have been sought in the past, and one of these uses wireless. In other words, a firefighter at the fire station carries the radio transceiver, reports the situation to the rescue headquarters installed outside, and, if a dangerous situation arises, contacts the rescue headquarters using a radio transceiver, To other firefighters using a wireless transceiver.

However, this method has no effect when suddenly buried or suffocated by consciousness, such as a sudden burial or a suffocation by a dangerous firefighter having a certain consciousness and having to contact the rescue headquarters with his / her status and location.

Furthermore, because the radio transceiver is composed of very weak electronic circuits at high temperatures, the radio transceiver is often disabled due to the high temperature at the fire site.

In order to overcome these problems, the Registration Practical Utility Model No. 20-0272435 "detects and warns that a firefighter dispatched to a fire site has fallen into an unstable condition due to a gas suffocation or unexpected accident, A portable safety alarm device for a firefighting team "which can detect the expected failure state of a safety alarm device by high temperature and warn to secure safety in a fire scene.

However, the above-described warning device is worn using the clip 3, which is not only inconvenient to carry and use, but also has a problem of being easily separated and often lost during fire fighting.

Meanwhile, as a conventional technology related to position tracking, a position tracking apparatus using a GPS receiver is typical. In the case of the GPS receiver, there is an advantage that accurate position information data can be secured. On the other hand, It is not possible to use it and it is not suitable for tracking the location of firefighters put into fire fighting.

In addition, although Patent Document No. 0868241 proposes an indoor location tracking device using an acceleration sensor, it is not suitable for use in a firefighter in dangerous situations where heavy equipment is worn and a fire must be suppressed within a short time.

In the present invention, a firefighter falling on a fire scene is sensed through a motion sensor, an audio buzzer mixes ultrasonic signals for confirming the position information of a firefighter with an alarm signal, and the control room receives the ultrasonic signal, The present invention provides a personal safety alarm device for a firefighter that can be structured.

The present invention also provides a personal safety alarm device for a firefighter capable of promptly notifying a firefighter of a dangerous situation by displaying a remaining amount of air through a pressure sensor attached to an air box and an ambient temperature confirmed through a temperature sensor on a LCD display There is another purpose in providing.

A personal safety alarm device for a firefighter according to the present invention is a personal safety alarm device attached to one side of a firefighter's garment and including a temperature sensor for sensing a temperature of the surroundings, The microcomputer controls the piezoelectric element driving unit to generate an audible alarm sound in the audio buzzer. At the same time, the microcomputer generates double ultrasonic waves in order to check the position of the firefighting machine in the control room, The audio buzzer includes a main electrode, an auxiliary electrode, and a grounding oscillator including a ground serving as a ground. The audio buzzer controls an audio frequency of less than 20 kHz by an input signal transmitted to the main electrode through a piezoelectric element driver, Is output from 90 to 100dB, and 20kHz is output by the input signal transmitted to the auxiliary electrode And generates ultrasonic waves on the wafer.

The personal safety alarm device for a firefighter according to the present invention detects a fire alarm by a motion sensor when a firefighter collapses on the floor due to a collapse of a building or toxic gas suffocation, So that it is possible to easily implement the position tracking of the firefighting apparatus by a simple technology constitution.

In addition, the remaining amount of air through the pressure sensor attached to the air box and the ambient temperature confirmed through the temperature sensor are displayed on the LCD display, thereby warning the firefighter of the danger warning immediately.

Brief Description of the Drawings Fig. 1 is a view showing an embodiment of a fire-fighting box with a fire alarm personal safety alarm device according to the present invention,
Fig. 2 is a schematic configuration diagram of the personal safety alarm device of Fig. 1,
FIG. 3 is a functional block diagram of the personal safety alarm system of FIG. 1,
4 is a schematic diagram showing an audio buzzer as an embodiment of the present invention;

Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 1, the personal safety alarm device for a firefighter according to the present invention is attached to one side of a front side of a fire fighting apparatus for firefighters, thereby supporting a safe operation of a firefighter at a fire scene.

2 and 3, the personal safety alarm device 100 for a firefighter includes a movement sensor 120 for sensing movement of a firefighter, a temperature sensor 130 for sensing a temperature around the firefighter, An LCD display 140 for displaying a surrounding state in a character or a graphic form, and an audio buzzer 150 for generating an emergency alarm sound and an ultrasonic wave.

At this time, a Bluetooth module 1 (160) is further provided at one side of the personal safety alarm device 100 for transmitting and receiving signals to and from the oxygen cylinder 200.

The motion sensor 120 senses the movement of the firefighter and converts it into an electric signal. Since the sensor is a well-known technology in an electric field that can be easily implemented through a conventional acceleration sensor or an ultrasonic sensor, .

4, the audio buzzer 150 includes a main electrode 150a, an auxiliary electrode 150b, and a ground 150c serving as a ground, The audio buzzer 150 outputs an audible frequency of less than 20 kHz by 90 to 100 dB according to an input signal transmitted to the main electrode 150a through the piezoelectric element driving unit 110a, An ultrasonic wave of 20 kHz or more is generated by the transmitted input signal.

That is, in the motion sensor 120, when the movement of the firefighter is not longer than a predetermined time, a predetermined electrical signal is generated and transmitted to the microcomputer 110, and the microcomputer 110 generates an alarm sound in the audio buzzer 150 And the control room 300 receives the ultrasonic wave and confirms the position of the firefighter.

Accordingly, the present invention is unnecessary even if there is no additional device such as a GPS for transmitting position information that has been used conventionally.

In general, the audible frequency of a sound wave which can be heard by a person is in the range of 16 Hz to 20 kHz, and the ultrasonic wave is a sound wave whose frequency is higher than the audible frequency 20 kHz, And acquires the positional information thereof through a separate ultrasound receiver in the control room 300.

The decibel (dB) is a unit representing the relative size of the sound. The average living noise in the home is about 40 dB, the daily conversation is about 60 dB, and the listening at home is about 85 dB. Since the alarm sound is generated for the emergency situation, the output is configured to be 95 dB.

As described above, in the present invention, the audio buzzer 150 generates an emergency alarm sound and an ultrasonic wave in an audible frequency using dual tone multi frequency (DTMF) method. In the conventional art, It is possible to improve the manufacturing cost and the disadvantage that the size of the whole product becomes large by generating the emergency structure signal separately in each part.

On the other hand, the ambient temperature sensed by the temperature sensor 130 is displayed in real time on the LCD 140 provided on the front surface of the personal safety alarm device 100 so that the surrounding firefighters can visually confirm the temperature.

Accordingly, when a plurality of firefighters are scattered in all directions and fire suppression works, the efficiency of the firefighting work can be improved while confirming in real time the firefighters are hotter in which direction the temperature is higher.

The microcomputer 110 includes a Bluetooth module 1 160 as a wireless remote transceiver and the Bluetooth module 1 160 includes a Bluetooth module 2 220 provided in an oxygen cylinder 200 for supplying oxygen to a firefighter, And the remaining oxygen amount detected by the pressure sensor 210 of the oxygen cylinder 200 is transmitted to the microcomputer 110 through the Bluetooth module 220 and displayed on the LCD display 130 as the remaining amount, And generates an audible alarm through the audio buzzer 150 when it is less than a predetermined value.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the appended claims. will be.

100: Personal safety alarm device
110: Microcomputer 110a: Piezoelectric element driving part
120: motion sensor 130: temperature sensor
140: LCD display 150: Audio buzzer
150a: main electrode 150b: auxiliary electrode
150c: Ground 160: Bluetooth module 1
200: Oxygen bottle 210: Pressure sensor
220: Bluetooth module 2
300: Control room

Claims

A personal safety alarm device attached to one side of a fire fighting suit and including a temperature sensor for sensing a temperature around the fire fighting suit,
The motion sensor 120 generates a predetermined electrical signal when the movement of the firefighter does not exist for a predetermined period of time and transmits the electrical signal to the microcomputer 110. The microcomputer 110 controls the piezoelectric element driver 110a to control the audio buzzer 150, An emergency alarm sound of an audible frequency is generated, and at the same time, an ultrasonic wave is generated in the control room 300 so as to check the position of the firefighter,
The audio buzzer 150 is composed of a tapping oscillation element including a main electrode 150a, an auxiliary electrode 150b and a ground 150c serving as a ground, and the audio buzzer 150 Outputs an audible frequency of less than 20 kHz by 90 to 100 dB and an ultrasonic wave of 20 kHz or more by an input signal transmitted to the auxiliary electrode 150b by the input signal transmitted to the main electrode 150a through the piezoelectric element driving unit 110a Wherein the fire alarm is a fire alarm.

The method according to claim 1,
Wherein the temperature detected by the temperature sensor (130) is displayed in real time on the LCD display (140) provided on the front surface of the personal safety alarm device (100) so that the surrounding fire fighters can visually confirm the temperature. Privacy alarm device.

The method according to claim 1,
The microcomputer 110 is provided with a Bluetooth module 1 160 as a wireless remote transceiver and the Bluetooth module 1 160 is connected to a Bluetooth module 2 220 provided in an oxygen cylinder 200 for supplying oxygen to a firefighter, And,
The remaining oxygen amount detected by the pressure sensor 210 of the oxygen cylinder 200 is transmitted to the microcomputer 110 through the Bluetooth module 220 and is displayed in the LCD display 130 as a remaining amount. And generates an audible alarm through the buzzer (150).

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