CN201910104U

CN201910104U - Voice guidance evacuating system

Info

Publication number: CN201910104U
Application number: CN2010206757262U
Authority: CN
Inventors: 傅志海
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-12-23
Filing date: 2010-12-23
Publication date: 2011-07-27
Anticipated expiration: 2020-12-23

Abstract

The utility model relates to a voice guidance evacuating system, which consists of a smoke detection circuit, a commercial power detection circuit and a singlechip. The smoke detection circuit consists of a smoke sensor and an adjustable resistance connected in parallel with the smoke sensor. An output of the smoke detection circuit is connected with the singlechip. A level signal output by the singlechip is connected to a voice chip through a first triode. An output of the voice chip is connected with an LM386 audio amplification chip and then controls a speaker through an output of the LM386 audio amplification chip. The commercial power detection circuit is connected with a breaker switch through an AC (alternate current) 220V alternate current voltage circuit consisting of a live wire L and a zero line N, and passes through a first capacitor to be connected in parallel with a resistance. An output end of the commercial power detection circuit is connected in series with a diode, then is connected in parallel with a second capacitor and a voltage-regulator diode to be connected to a photoelectric coupler, and is connected with the singlechip through an output of the photoelectric coupler. A level output by the singlechip is connected with a relay through a second triode. A standby power supply is controlled and driven by a relay switch. Therefore, the aims of scientifically guiding personnel evacuation and providing the reliable power supply to guarantee the walking safety are fulfilled.

Description

A kind of voice guidance evacuating system

Technical field

The utility model relates to a kind of voice guidance evacuating system.

Background technology

At present, exist the hidden danger of fire in industry and the folk power supply system always and be accompanied by the generation of disaster, it is threatening human safety of life and property constantly, becomes one of major disaster that influences human ordinary production and existence thus.When fire took place, people did not leave the scene in the very first time because of being unfamiliar with surrounding environment, lose the escape chance, and need cut off the electricity supply during because of fire, more lost the route of escaping from.

The utility model content

The purpose of this utility model is to overcome above-mentioned deficiency, and a kind of voice guidance evacuating system is provided.

The technical scheme that the utility model adopted is such: a kind of voice guidance evacuating system, form by smoke detection circuit, city's power detection circuit and single-chip microcomputer, described smoke detection circuit is made up of smoke transducer and adjustable resistance in parallel thereof, its output connects single-chip microcomputer, level signal by single-chip microcomputer output is connected to speech chip through first triode, speech chip output connects LM386 audio frequency power amplifier chip, again through LM386 audio frequency power amplifier chip output control loudspeaker; Described city power detection circuit connects killer switch by the AC220V ac voltage circuit that live wire L, zero line N constitute, parallel resistance behind first electric capacity again, its output terminal series diode, be connected to photoelectrical coupler behind second electric capacity in parallel again, the voltage stabilizing diode, connect single-chip microcomputer by photoelectrical coupler output, level by single-chip microcomputer output connects relay through second triode, by relay switch controlling and driving standby power supply.

Described speech chip is the speech chip of internal memory " according to the walking of fire exit nameplate ".

By adopting the aforementioned techniques scheme, the beneficial effects of the utility model are: when breaking out of fire, when smoke detector collects smog, send to single-chip microcomputer, the Micro Controller Unit (MCU) driving voice alarm circuit is sent voice guidance personnel escape route, and adopts city's power detection circuit, by Single-chip Controlling cut-in stand-by power supply, reach the scientific guidance evacuating personnel, provide reliable source of power to guarantee the walking purpose of safety.

Description of drawings

Fig. 1 is circuit theory diagrams of the present utility model.

Embodiment

Further specify the utility model below in conjunction with the drawings and specific embodiments.

As shown in Figure 1, a kind of voice guidance evacuating system, by the smoke detection circuit, city's power detection circuit and single-chip microcomputer are formed, described smoke detection circuit is by smoke transducer WTT and adjustable resistance W1 in parallel thereof, W2 forms, when gas sensor smoke transducer WTT surface adsorption when smog or inflammable gas, the A at its smoke transducer WTT two ends, A1 interpolar resistance reduces, at this moment because adjustable resistance W1, the A at W2 and smoke transducer WTT two ends, the dividing potential drop of A1 electrode resistance descends the current potential of Node B, C point current potential also and then descends, single chip machine controlling circuit IC1 detected its 2nd pin I/O end and was low level state this moment, through the output of single-chip microcomputer IC1 internal judgment, breaking out of fire is described.The 6th pin output low level signal through single-chip microcomputer IC1 makes triode Q1 conducting through resistance R 6, therefore speech chip 1C2 obtains supply voltage, speech chip IC2 is coupled to the 3rd pin of LM386 audio frequency power amplifier chip IC 3 through capacitor C 6, after its internal audio frequency amplifies, amplify the voice reminder that promotion loudspeaker Y sends audio alert " according to the walking of fire exit nameplate " by the 6th pin output capacitance C7 coupling of LM386 audio frequency power amplifier chip IC 3.

Described city power detection circuit connects killer switch CM1 by the AC220V ac voltage circuit that live wire L, zero line N constitute, parallel resistance R1 after capacitor C 1 again, behind its output terminal series diode D1, shunt capacitance C2, voltage stabilizing diode DW are connected to photoelectrical coupler U1 again, when killer switch CM1 is in combined floodgate, live wire L is through capacitor C 1 step-down, resistance R 1 shunting, voltage signal after diode D1 rectification, capacitor C 2 filtering, the voltage stabilizing diode DW voltage stabilizing is connected to photoelectrical coupler U1, make it conducting, be output as low level signal.When killer switch CM1 is in when opening a sluice gate, live wire L, zero line N do not constitute the AC220V ac voltage circuit, may be in two states, and a kind of is that power supply has a power failure; Another kind is that electricity is cut off in fire-fighting by force, and breaking out of fire is described.Live wire L exports through diode D1 no-voltage signal, therefore the photoelectricity coupling contains device U1 and also is in cut-off state, the high level signal of its output is input to single-chip microcomputer IC1 the 5th pin I/O port through resistance R 4 and also is high level state, through the output of single-chip microcomputer IC1 internal judgment, by its 21st pin output high level, make triode Q2 conducting through resistance R 7 current limlitings, relay J 1 adhesive, switch J1-1 transfers normally closed point to by normally closed, promotes the standby power supply power supply, personnel provide illumination for walking, convenient escape.

More than show and described ultimate principle of the present utility model and principal character and advantage thereof; the technician of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the explanation just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications; these changes and improvements all fall in claimed the utility model scope, and the claimed scope of the utility model is defined by appending claims and equivalent thereof.

Claims

1. voice guidance evacuating system, it is characterized in that: form by smoke detection circuit, city's power detection circuit and single-chip microcomputer, described smoke detection circuit is made up of smoke transducer and adjustable resistance in parallel thereof, its output connects single-chip microcomputer, level signal by single-chip microcomputer output is connected to speech chip through first triode, speech chip output connects LM386 audio frequency power amplifier chip, again through LM386 audio frequency power amplifier chip output control loudspeaker; Described city power detection circuit connects killer switch by the AC220V ac voltage circuit that live wire L, zero line N constitute, parallel resistance behind first electric capacity again, its output terminal series diode, be connected to photoelectrical coupler behind second electric capacity in parallel again, the voltage stabilizing diode, connect single-chip microcomputer by photoelectrical coupler output, level by single-chip microcomputer output connects relay through second triode, by relay switch controlling and driving standby power supply.

2. a kind of voice guidance evacuating system according to claim 1 is characterized in that: described speech chip is the speech chip of internal memory " according to the walking of fire exit nameplate ".