CN205179066U

CN205179066U - Critical alarm

Info

Publication number: CN205179066U
Application number: CN201520531571.8U
Authority: CN
Inventors: 卡斯木·尼牙孜
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-07-12
Filing date: 2015-07-12
Publication date: 2016-04-20
Anticipated expiration: 2025-07-12

Abstract

Report an emergency and ask for help or increased vigilance the critical alarm of use when meeting with emergent events in the place that personnel gather and the flow of personnel volume is big usually, the present invention is composed of a shell, the circuit board and the loudspeaker of the installation of shell the inside constitute, above the shell or side all is equipped with fixer and fixed orifices on the wall, be equipped with the power wire output hole and output power line above the shell, the horn wire delivery outlet is and the output horn wire, the shell openly is equipped with the power indicator hole and installation power indicator, the lamp hole is indicateed in accurate work and the accurate pilot lamp of working of installation, the one or more button switch hole starts button switch and installation one or more reports an emergency and asks for help or increased vigilance sound, a shell side is equipped with the microphone cord delivery outlet and output microphone cord and connection microphone, the shell side is equipped with the microphone couple, it have with low costs, use that easy operation is convenient, also can normal use during the mains failure, each plants emergency situation all can to broadcast the corresponding sound of reporting an emergency and asking for help or increased vigilance happy, also can broadcast advantages such as notice, can extensively apply to the critical of place such as school, market, residential quarter, hotel, hotel, traffic station, hospital, bank, theater and report an emergency and ask for help or increased vigilance.

Description

Critical device

Technical field

A kind of Critical device that the utility model relates to, namely a kind ofly meets with the alarm device that urgent or dangerous situation broadcasts warning and music.

Background technology

Work as earthquake, fire, big flood, when violence terrorist incidents etc. are urgent or dangerous situation accident occurs, usually can bring harm to the life of people and property, the place that particularly people is many, the students' dormitory of such as school, the personnel such as hotel sleep rest time occur earthquake, fire, big flood, burst violence terrorist incident, people are danger close comparatively speaking, but do not know whatever, now operator on duty wakes or saves that everybody is very inconvenient, there is broadcast system in some schools and hotel, under normal circumstances, the main control device of broadcast system is all arranged in studio or control room, if meet with above-mentioned emergency situation, the people in studio or control room is absent from the scene again, and this kind equipment only has professional just can operate use, general operator on duty can not operate.In such cases, time is life, and a second, for also very important us, if there is the people that a kind of equipment use is very convenient, general all clear at a glance, just can operates use at once, operate this equipment.Send out when earthquake occurs alarm call and music a kind of, notify the meaning of everybody this sound in time, and require that everybody makes and process accordingly and withdraw prompting; Fire sends the meaning that the alarm call of another correspondence and music notify everybody this sound in time when occurring, and requires that everybody makes and process accordingly and withdraw prompting; Big flood sends the meaning that the alarm call of another correspondence and music notify everybody this sound in time when occurring, and requires that everybody makes and process accordingly and withdraw prompting; Violence terror sends the meaning that the alarm call of another correspondence and music notify everybody this sound in time when waiting accident to occur, and requires everybody to make to process and withdraw prompting accordingly; The alarm call that often kind of emergency situation sends and music all different, require everybody to make to process accordingly and withdraw prompting also different, everybody uses to just listen and just understands, can do with prompting on request at once.

If same AT STATION, market, arenas, gathering of people and the king-sized place of flow of the people such as airport, meet with the accidents such as earthquake, fire, big flood, violence be terrified, need one to notify in time especially or remind everybody alarm equipment.There is broadcast system in some places, under normal circumstances, the main control device of broadcast system is all arranged in studio or control room, if meet with above-mentioned emergency situation, the people in studio or control room is absent from the scene again, and this kind equipment only has professional just can operate use, general operator on duty can not operate.In such cases, time is life, and a second, for also very important us, if there is the people that a kind of equipment use is very convenient, general all clear at a glance, just can operates use at once, operate this equipment.Send out when earthquake occurs alarm call and music a kind of, notify the meaning of everybody this sound in time, and require that everybody makes and process accordingly and withdraw prompting; Fire sends the meaning that the alarm call of another correspondence and music notify everybody this sound in time when occurring, and requires that everybody makes and process accordingly and withdraw prompting; Big flood sends the meaning that the alarm call of another correspondence and music notify everybody this sound in time when occurring, and requires that everybody makes and process accordingly and withdraw prompting; Violence terror sends the meaning that the alarm call of another correspondence and music notify everybody this sound in time when waiting accident to occur, and requires everybody to make to process and withdraw prompting accordingly; The alarm call that often kind of emergency situation sends and music all different, require everybody to make to process accordingly and withdraw prompting also different, everybody uses to just listen and just understands, can do with prompting on request at once.

Various alarm device on market, various in style, quality is uneven, but many alarm devices use very inconvenient, and common people can not use, and the sound of some alarm devices is little, slightly leave a distance just to have can't hear, the alarm call music of some alarm devices is single, does not also know that what has happened, what if also do not know even if heard; Some alarm devices can only send alarm music, do not have professional alarm call, and some alarm devices can not give rational prompting.

Police car, urgency protect the special-purpose vehicles such as car, relief car, environment-friendly vehicle, all can send corresponding alarm song, but specify that general place forbids to use this alarm device.

In sum, public place and gathering of people or the larger place of flow of the people are starved of a kind of Critical device.Such as: the king-sized places of flow of the people such as school, hotel, station, airport, hospital, bank, market, arenas need a kind of special Critical device especially.

Utility model content

The purpose of this utility model is to solve the problem, place that is large for flow of the people or gathering of people provides a kind of special Critical device, when meeting with the accidents such as earthquake, fire, big flood, violence terror, easy for operation, send corresponding alarm call and music, and make a kind of Critical device of safe escape process and prompting.

The purpose of this utility model is by realizing like this: a kind of Critical device, and it is made up of the circuit board of shell, housings installation and loudspeaker.Shell is that cuboid is prismatic or cylindrical, above shell or side is equipped with fixture and fixing hole on wall, power line delivery outlet is provided with and out-put supply line, horn wire delivery outlet and export horn wire above shell, outer casing frontispiece is provided with power supply indicator hole and installs power supply indicator, accurate relay indicating light hole and install accurate relay indicating light, one or more push-button switch hole and install the alarm call start button switch of one or more correspondence, shell one side is provided with microphone cord delivery outlet and exports microphone cord and connect microphone, and shell side is provided with microphone hook, circuit board is made up of power circuit, sound circuit, audio-frequency amplifier circuit, and they are interconnected, power circuit is made up of power line, transformer, rectifier diode, filtering capacitor, storage battery, resistor, indicator light, tripod integrated regulator, the input coil of power transformer and primary coil connect the power line of 220v civil power input through protective tube, the rectifier diode that the output winding of power transformer and secondary coil are connected with bridge type is connected, 1. the positive output end of rectifying full bridge is connected with the pin of the positive pole of storage battery with tripod integrated regulator, the positive pole of storage battery is connected with audio-frequency amplifier circuit, and 3. the pin of tripod integrated regulator is connected with sound circuit, sound circuit is made up of the push-button switch of voice circuit module of electric and one or more correspondence, described voice circuit module of electric is the module that one or more snippets button of insert card type or internal memory triggers playing function one to one, 3. the power input of voice circuit module of electric is connected to the pin of tripod integrated regulator through diode, each triggering I/O port of voice circuit module of electric is connected to a contact of each alarm call start button switch, each triggering I/O port that another contact of each alarm call start button switch is connected to the negative pole of power supply or voice circuit module of electric is connected to two contacts of corresponding each alarm call start button switch respectively after combination of two, the audio signal output end of voice circuit module of electric is connected to the signal input part of audio power amplifying circuit through capacitor,

Audio-frequency amplifier circuit is made up of microphone, audio frequency preamplifying circuit, audio power amplifying circuit, and microphone is connected with audio frequency preamplifying circuit, and audio frequency preamplifying circuit is connected with audio power amplifying circuit, and audio power amplifying circuit is connected with loudspeaker; Power circuit, sound circuit, audio-frequency amplifier circuit, loudspeaker are connected to each other the complete circuit of rear composition.

The utility model is Critical device, have that cost is low, power consumption is little, volume is little, lightweight, use easily, 24 hours quasi-operating status, mains failures time also can normally use, alarm sound is large, under each critical condition, all can send corresponding alarm call music, require that everybody makes process accordingly and withdraw prompting, also can broadcast the advantages such as short notice simultaneously, be widely used in the Critical in the places such as school, residential quarter, market, hotel, hotel, traffic station, hospital, bank, arenas.

Below in conjunction with accompanying drawing and example, the utility model is further illustrated.

Accompanying drawing explanation

Fig. 1 a, Fig. 1 b: the space schematic diagram of the utility model Critical device.

Fig. 2 a, Fig. 2 b: the front schematic view of the utility model Critical device.

Fig. 3 a, Fig. 3 b: the end view of the utility model Critical device.

Fig. 4 a, Fig. 4 b: the vertical view of the utility model Critical device.

Fig. 5: the circuit block diagram of the utility model Critical device.

Fig. 6: exemplary 1 circuit theory diagrams of the utility model Critical device.

Fig. 7: exemplary 2 circuit theory diagrams of the utility model Critical device.

In figure: 1 shell, 2 fixing holes, 3 power line delivery outlets, 4 power lines, 5 horn wire delivery outlets, 6 horn wires, 7 power supply indicator holes, 8 accurate relay indicating light holes, 9, 10, 11, 12, 13 alarm call start button switch holes, 14 microphone cord delivery outlets, 15 microphone cords, 16 microphones, 17 microphone hooks, R1, R2 resistor, C1, C2, C3 capacitor, VD1, VD2, VD3, VD4, VD5 diode, S1, S2, Sn (n is positive integer) push-button switch, LED1 power supply indicator, the accurate relay indicating light of LED2, IC1, IC2 integrated circuit, T transformer, SPK loudspeaker, MIC microphone, FUSE insures.

Embodiment

As shown in Fig. 1 a, Fig. 1 b, Fig. 2 a, Fig. 2 b, Fig. 3 a, Fig. 3 b, Fig. 4 a, Fig. 4 b, Fig. 5, Fig. 6, Fig. 7, a kind of Critical device, it is made up of the circuit board of shell 1, housings installation and loudspeaker SPK.Shell 1 is prismatic or cylindrical in cuboid, above shell 1 or side is equipped with fixture and fixing hole 2 on wall, shell 1 is provided with power line delivery outlet 3 and out-put supply line 4 above, horn wire delivery outlet 5 and export horn wire 6, shell 1 front is provided with power supply indicator hole 7 and installs power supply indicator LED1, accurate relay indicating light hole 8 and install accurate relay indicating light LED2, the push-button switch hole 9 of one or more correspondence, 10, 11, 12, 13 and the alarm call start button switch S D1 of one or more correspondence is installed, SD2, SD3, SD4, SD5, shell 1 one side is provided with microphone cord delivery outlet 14 and exports microphone cord 15 and connect microphone 16, shell side is provided with microphone hook 17, circuit board is made up of power circuit, sound circuit, audio-frequency amplifier circuit, and they are interconnected, power circuit is by power line, transformer T, rectifier diode VD1, VD2, VD3, VD4, filtering capacitor C1, storage battery, resistor R1, R2, indicator light LED1, LED2, tripod integrated regulator IC1 (IC1 is the integrated regulator can selecting positive 5V such as 7805 grade) forms, the input coil of power transformer T and primary coil connect the power line of 220v civil power input through protective tube FUSE, the rectifier diode VD1 that the output winding of power transformer T and secondary coil are connected with bridge type, VD2, VD3, VD4 is connected, 1. the positive output end of rectifying full bridge is connected with the pin of the positive pole of storage battery ACCUMULATOR with tripod integrated regulator IC1, the positive pole of storage battery is connected with audio-frequency amplifier circuit, 3. the pin of tripod integrated regulator IC1 is connected with sound circuit, sound circuit is the push-button switch SD1 by voice circuit module of electric IC2 and one or more correspondence, SD2, SD3, SD4, SD5 forms, described voice circuit module of electric IC2 is the module that one or more snippets button of insert card type or internal memory triggers playing function one to one, 3. the power input of voice circuit module of electric IC2 is connected to the pin of tripod integrated regulator IC1 through diode VD5, each triggering I/O port of voice circuit module of electric IC2 is connected to each alarm call start button switch S D1, SD2, SD3, SD4, a contact of SD5, each alarm call start button switch S D1, SD2, SD3, SD4, each triggering I/O port that another contact of SD5 is connected to the negative pole of power supply or voice circuit module of electric IC2 is connected to two contacts of corresponding each alarm call start button switch respectively after combination of two, the audio signal output end of voice circuit module of electric IC2 is through capacitor C2, C3 is connected to the signal input part of audio power amplifying circuit, audio-frequency amplifier circuit is made up of microphone MIC, audio frequency preamplifying circuit, audio power amplifying circuit, microphone is connected with audio frequency preamplifying circuit, audio frequency preamplifying circuit is connected with audio power amplifying circuit, and audio power amplifying circuit is connected with loudspeaker SPK, power circuit, sound circuit, audio-frequency amplifier circuit, loudspeaker are connected to each other the complete circuit of rear composition.

Embodiment 1

As shown in Fig. 1 a, Fig. 1 b, Fig. 2 a, Fig. 2 b, Fig. 3 a, Fig. 3 b, Fig. 4 a, Fig. 4 b, Fig. 5, Fig. 6, a kind of Critical device, it is made up of the circuit board of shell 1, housings installation and loudspeaker SPK.Shell 1 is prismatic or cylindrical in cuboid, above shell 1 or side is equipped with fixture and fixing hole 2 on wall, shell 1 is provided with power line delivery outlet 3 and out-put supply line 4 above, horn wire delivery outlet 5 and export horn wire 6, shell 1 front is provided with power supply indicator hole 7 and installs power supply indicator LED1, accurate relay indicating light hole 8 and install accurate relay indicating light LED2, the push-button switch hole 9 of one or more correspondence, 10, 11, 12, 13 grades and install the alarm call start button switch S D1 of one or more correspondence, SD2, SD3, SD4, SD5 etc., shell 1 one side is provided with microphone cord delivery outlet 14 and exports microphone cord 15 and connect microphone 16, shell side is provided with microphone hook 17, circuit board is made up of power circuit, sound circuit, audio-frequency amplifier circuit, and they are interconnected, power circuit is by power line, transformer T, rectifier diode VD1, VD2, VD3, VD4, filtering capacitor C1, storage battery, resistor R1, R2, indicator light LED1, LED2, tripod integrated regulator IC1 (IC1 is the integrated regulator can selecting positive 5V such as 7805 grade) forms, the input coil of power transformer T and primary coil connect the power line of 220v civil power input through protective tube FUSE, the rectifier diode VD1 that the output winding of power transformer T and secondary coil are connected with bridge type, VD2, VD3, VD4 is connected, positive output end and the positive pole of storage battery ACCUMULATOR and being connected of circuit of three-terminal voltage-stabilizing integrated IC1 of rectifying full bridge, the positive pole of storage battery is connected with audio-frequency amplifier circuit, 3. the pin of tripod integrated regulator IC1 is connected with sound circuit, 220V electric main enters primary coil and the input coil of power transformer T through power line, the alternating current of output winding and secondary coil output buck, diode VD1, VD2, VD3, VD4 rectification that this alternating current connects through bridge type and become direct current after filtering capacitor C1 filtering, this direct current is while the work providing audio-frequency amplifier circuit to need is electric, 3. the pin that another side the enters tripod integrated regulator IC1 1. rear foot exports the direct current of positive 5V, the work electricity that the direct current of this positive 5V provides sound circuit to need, sound circuit is made up of the push-button switch of voice module IC2 and BY8001-16P type plug-in card MP3 modular circuit and one or more correspondence, push-button switch is the usual off-state in contact, the push-button switch on time connected, this push-button switch is ordered in earthquake alarm call start button switch respectively, fire alarm call start button switch, big flood alarm call start button switch, accident alarm call start button switch, other Critical sound start button switches etc., described voice module IC2 and BY8001-16P type plug-in card MP3 module have five to trigger I/O port, maximum support 15 sections of buttons trigger the module of playing function one to one, the pin of voice module IC2 connect and the negative pole of power supply and ground connection, 8. 3. the pin of tripod integrated regulator IC1 be connected with the pin through diode VD5 voice module IC2,4., 5. the audio signal output pin of voice module IC2 is connected with the signal input part of the audio power amplifying circuit in capacitor C2, C3 audio-frequency amplifier circuit, the pin of voice module IC2 10., 9. namely IO1, IO2, IO3, IO4, IO5 connect with a contact of corresponding push-button switch S1, S2, S3, S4, S5 respectively, and another contact of push-button switch S1, S2, S3, S4, S5 is connected with the negative pole of power supply respectively, the pin of voice module IC2 10., be 9. IO1, IO2, IO3, IO4, IO5 combination of two respectively, connect with two contacts of corresponding push-button switch S6 to S15, only select S1, S2, S3, S4, S5 both passable here, SD card is preserved earthquake alarm call music, and " everybody please notes! earthquake, protects oneself, after earthquake has stopped, makes the best use of time to be dispersed into opening ... ", " everybody please notes fire alarm call music! caught fire, please everybody immediately establishment officer put out big fire, and to take care ... ", " everybody please notes big flood alarm call music! Flooding, please everybody withdraw immediately, finds buoyant apparatus, notes protection oneself and escape ... ", " everybody please notes the terrified alarm call music of violence! there is violence terrorist incident above, please everybody withdraw immediately, carry out and take precautions against preparation protection life security ... " etc. Critical sound happy, and this SD card is inserted into the plug-in card socket on voice module, audio-frequency amplifier circuit is made up of microphone MIC, audio frequency preamplifying circuit, audio power amplifying circuit, microphone is connected with audio frequency preamplifying circuit, audio frequency preamplifying circuit is connected with audio power amplifying circuit, and audio power amplifying circuit is connected with loudspeaker SPK, power circuit, sound circuit, audio-frequency amplifier circuit, loudspeaker are connected to each other the complete circuit of rear composition.

Embodiment 2

As shown in Fig. 1 a, Fig. 1 b, Fig. 2 a, Fig. 2 b, Fig. 3 a, Fig. 3 b, Fig. 4 a, Fig. 4 b, Fig. 5, Fig. 7, a kind of Critical device, it is made up of the circuit board of shell 1, housings installation and loudspeaker SPK.Shell 1 is prismatic or cylindrical in cuboid, above shell 1 or side is equipped with fixture and fixing hole 2 on wall, shell 1 is provided with power line delivery outlet 3 and out-put supply line 4 above, horn wire delivery outlet 5 and export horn wire 6, shell 1 front is provided with power supply indicator hole 7 and installs power supply indicator LED1, accurate relay indicating light hole 8 and install accurate relay indicating light LED2, the push-button switch hole 9 of one or more correspondence, 10, 11, 12, 13 and the alarm call start button switch S D1 of one or more correspondence is installed, SD2, SD3, SD4, SD5, shell 1 one side is provided with microphone cord delivery outlet 14 and exports microphone cord 15 and connect microphone 16, shell side is provided with microphone hook 17, circuit board is made up of power circuit, sound circuit, audio-frequency amplifier circuit, and they are interconnected, power circuit is by power line, transformer T, rectifier diode VD1, VD2, VD3, VD4, filtering capacitor C1, storage battery, resistor R1, R2, indicator light LED1, LED2, tripod integrated regulator IC1 (IC1 is the integrated regulator can selecting positive 5V such as 7805 grade) forms, the input coil of power transformer T and primary coil connect the power line of 220v civil power input through protective tube FUSE, the rectifier diode VD1 that the output winding of power transformer T and secondary coil are connected with bridge type, VD2, VD3, VD4 is connected, positive output end and the positive pole of storage battery ACCUMULATOR and being connected of tripod integrated regulator IC1 of rectifying full bridge, the positive pole of storage battery is connected with audio-frequency amplifier circuit, 3. the pin of tripod integrated regulator IC1 is connected with sound circuit, 220V electric main enters primary coil and the input coil of power transformer T through power line, the alternating current of output winding and secondary coil output buck, diode VD1, VD2, VD3, VD4 rectification that this alternating current connects through bridge type and become direct current after filtering capacitor C1 filtering, this direct current is while the work providing audio-frequency amplifier circuit to need is electric, 3. the pin that another side the enters tripod integrated regulator IC1 1. rear foot exports the direct current of positive 5V, the work electricity that the direct current of this positive 5V provides sound circuit to need, sound circuit is made up of the push-button switch of voice module IC2 and BY8301-16P and one or more correspondence, voice module IC2 and BY8301-16P has six to trigger I/O port, maximum support 21 sections of buttons trigger broadcasting one to one, the built-in SPI-FLASH of module is as storage, is furnished with USB interface, the audio content that FLASH freely changed by computer can be connected by data wire, push-button switch is the usual off-state in contact, the push-button switch of contact connection on time, this push-button switch is ordered in earthquake alarm call start button switch respectively, fire alarm call start button switch, big flood alarm call start button switch, violence terrified alarm call start button switch, other accident alarm call start button switches etc., the pin of voice module IC2 connect and the negative pole of power supply and ground connection, 6. 3. the pin of tripod integrated regulator IC1 be connected with the pin through diode VD5 voice module IC2,3., 4. the audio signal output pin of voice module IC2 is connected with the signal input part of the audio power amplifying circuit in capacitor C2, C3 audio-frequency amplifier circuit, the pin of voice module IC2 10. namely IO1, IO2, IO3, IO4, IO5, IO6 are connected with a contact of corresponding push-button switch S1, S2, S3, S4, S5, S6 respectively, another contact of push-button switch S1, S2, S3, S4, S5, S6 is connected with the negative pole of power supply respectively, the pin of voice module IC2 10. be IO1, IO2, IO3, IO4, IO5, IO6 combination of two respectively, be connected with two contacts of corresponding push-button switch S7 to S21, only select S1, S2, S3, S4, S5 both passable here, the SPI-FLASH memory of IC2 is preserved earthquake alarm call music, and " everybody please notes! earthquake, protects oneself, after earthquake has stopped, makes the best use of time to be dispersed into opening ... ", " everybody please notes fire alarm call music! caught fire, please everybody immediately establishment officer put out big fire, and to take care ... ", " everybody please notes big flood alarm call music! Flooding, please everybody withdraw immediately, finds buoyant apparatus, notes protection oneself and escape ... ", " everybody please notes the terrified alarm call music of violence! there is violence terrorist incident above, please everybody withdraw immediately, carry out and take precautions against preparation protection life security ... " etc. Critical sound happy, audio-frequency amplifier circuit is made up of microphone MIC, audio frequency preamplifying circuit, audio power amplifying circuit, microphone is connected with audio frequency preamplifying circuit, audio frequency preamplifying circuit is connected with audio power amplifying circuit, and audio power amplifying circuit is connected with loudspeaker SPK, power circuit, sound circuit, audio-frequency amplifier circuit, loudspeaker are connected to each other the complete circuit of rear composition.

During installation, this Critical device is arranged on school through fixing hole 2, residential quarter, hotel, market, hotel, traffic station, hospital, bank, on the night shift room wall in the place of the large or gathering of people of the flows of the people such as arenas, loud speaker and loudspeaker are arranged on corridor, hall or outdoor, power line connects 220V civil power, power supply indicator LED1 is bright, indicate electricity, accurate relay indicating light LED2 is also bright, represent all circuit quasi-operating status, another side storage battery charges, if generation earthquake, watch hastens to click earthquake alarm call start button switch, this device enters operating state, and broadcast earthquake alarm call music, require that everybody makes process accordingly and withdraw prompting, if breaking out of fire, watch hastens to click fire alarm call start button switch, this device enters operating state, and broadcast fire alarm call music, require that everybody makes process accordingly and withdraw prompting, if generation big flood, watch hastens to click big flood alarm call start button switch, this device enters operating state, and broadcast big flood alarm call music, require that everybody makes process accordingly and withdraw prompting, if there is violence terrorist incident, watch hastens to click violence terrified alarm call start button switch, this device enters operating state, and broadcast the terrified alarm call music of violence, require that everybody makes process accordingly and withdraw prompting, watch also can broadcast with microphone the notice needed.

Claims

1. a Critical device, is characterized in that: it is made up of the circuit board of shell (1), housings installation and loudspeaker (SPK);

Above shell (1) or side is equipped with fixture and fixing hole (2) on wall, shell (1) is provided with power line delivery outlet (3) and out-put supply line (4) above, horn wire delivery outlet (5) and export horn wire (6), shell (1) front is provided with power supply indicator hole (7) and installs power supply indicator (LED1), accurate relay indicating light hole (8) and install accurate relay indicating light (LED2), one or more push-button switch hole (9, 10, 11, 12, 13) and one or more alarm call start button switch (SD1 is installed, SD2, SD3, SD4, SD5), shell (1) one side is provided with microphone cord delivery outlet (14) and exports microphone cord (15) and connect microphone (16), shell side is provided with microphone hook (17),

Circuit board is made up of power circuit, sound circuit, audio-frequency amplifier circuit, and they are interconnected;

Power circuit is by power line, transformer (T), rectifier diode (VD1, VD2, VD3, VD4), filtering capacitor (C1), storage battery, resistor (R1, R2), power supply indicator (LED1), accurate relay indicating light (LED2), tripod integrated regulator (IC1) forms, the input coil of power transformer (T) and primary coil connect the power line of 220v civil power input through protective tube, rectifier diode (the VD1 that the output winding of power transformer (T) and secondary coil are connected with bridge type, VD2, VD3, VD4) be connected, 1. the positive terminal of rectifying full bridge is connected with the pin of the positive pole of storage battery with tripod integrated regulator (IC1), 2. the negative pole end of rectifying full bridge is connected with the pin of the negative pole of storage battery with tripod integrated regulator (IC1), the positive pole of storage battery, negative pole is connected with audio-frequency amplifier circuit respectively, the pin of tripod integrated regulator (IC1) 3., 2. pin is connected with sound circuit respectively,

Sound circuit is by voice circuit module of electric (IC2) and one or more alarm call start button switch (SD1, SD2, SD3, SD4, SDS) form, the power input of voice circuit module of electric (IC2) is connected to the pin of tripod integrated regulator (IC1) 3. through diode (VD5), each triggering I/O port of voice circuit module of electric (IC2) is connected to a contact of each alarm call start button switch, each triggering I/O port that another contact of each alarm call start button switch is connected to the negative pole of power supply or voice circuit module of electric (IC2) is connected to two contacts of corresponding each alarm call start button switch respectively after combination of two, the audio signal output end of voice circuit module of electric (IC2) is connected to the signal input part of audio power amplifying circuit through capacitor,

Audio-frequency amplifier circuit is made up of microphone MIC, audio frequency preamplifying circuit, audio power amplifying circuit, microphone is connected with audio frequency preamplifying circuit, audio frequency preamplifying circuit is connected with audio power amplifying circuit, and audio power amplifying circuit is connected with loudspeaker (SPK);

Power circuit, sound circuit, audio-frequency amplifier circuit, loudspeaker are connected to each other the complete circuit of rear composition.

2. a kind of Critical device according to claim 1, is characterized in that: described voice circuit module of electric is the module that one or more snippets button of insert card type or internal memory triggers playing function one to one.

3. a kind of Critical device according to claim 1, is characterized in that: described alarm call start button switch is the usual off-state in contact, the push-button switch of contact connection on time.