CN2056264U - Multifunctional acoustooptic alarm controller for harmful gas - Google Patents

Abstract

The utility model discloses a multifunctional acousto-optic alarm controller for the harmful gas (the short name is an alarm controller). The utility model belongs to a control signal device for the safety protection. According to the requirement, the utility model can adopt the different semiconductor gas sensitive elements to measure various harmful gases of the combustible gas, the combustible liquid steam, etc. When definite concentration is exceeded, the acoustic and light alarm can be synchronously emitted, through an output socket, the alarm is emitted, and simultaneously a ventilating fan, an air purifier or the other latching link, etc. is controlled. The utility model can be widely used for the existing living and work places in the family and the harmful gas. In addition, the utility model is also accompanied with music doorbells or theft protection jacks.

Description

Multifunctional acoustooptic alarm controller for harmful gas

This invention---multi-functional harmful gas sound and light alarm controller (abbreviation alarm controller) belongs to security protection control signal device.

The purpose of this utility model is to solve gas poisoning and other harmful gases infringement health, automobilist driving a car under the influence of alcohol accident and problem such as provide amenities for the people.This alarm controller can carry out off-limit alarm to harmful gas, and in time gets rid of or connection locking link.Also but double as guest doorbell and door and window are strayed into warning.

As everyone knows, safety is very necessary in work and life.Many harmful gases are to the harm of human body, and the sense of smell that is difficult to personnel selection feels and look into, and poisonous gas poisoning, the driver incidents such as accident of drivining a car under the influence of alcohol often take place.Its functions such as the household fuel gas alarm of Chu Shouing, electronic door bell, burglar alarm mostly are single in the market, both use inconvenient, can not handle at accident, this is a problem anxious to be solved.

This invention---multi-functional harmful gas sound and light alarm controller is by power supply, gas-sensitive head, time-delay amplifying return circuit, partly be made up of contact control loop, light and audible alarm loop, external control loop etc., and its circuit sees Fig. 1 for details.

B among Fig. 1 ₁---be power transformer, L ₁---be B ₁The primary coil of transformer, L ₂, L ₃, L ₄---be B ₁Pay coil.CZ---by the supply socket of electronic controlled fan.J---be relay, J ₁---be the normal opened contact of the J of relay, J ₂---be the normally closed contact (can be used for ethanol excess locking engine start power supply in the air) of relay J.C ₁, C ₂, be filter capacitor, C ₃Be the anti-interference capacitor of relay J, C ₄Be+5V and+the 13V blocking capacitor, C ₅---be the timing circuit capacitor.D ₁～D ₄---be four diodes of full-wave rectification bridge, D ₅～D ₆---be two diodes as the 13V full-wave rectification, D ₇～D ₈---being catching diode, HD and LD---is LED type light emitting diode.R _W---be potentiometer, R ₁～R ₈---be resistance.FA---be involution button.1CK---be external doorbell socket, also can be strayed into warning as Anti-theft door and window, or water level off-limit alarm wiring; 2CK---the normally closed contact that is relay J is drawn jack.BG ₁And BG ₂Complex pipe for 3DG12B triode formation.KD15 is an integrated circuit sound equipment sheet; YF ₁And YF ₂Be two integrated circuit Sheffer stroke gates, they constitute trigger flip-flop.But DC5V and DC13V external direct current power supply.YD---be loudspeaker or piezoelectric ceramic piece.K---be the normal gauge tap of exhaust fan (because of dotting) with the non-direct relation event of this controller.

This invention---multi-functional harmful gas sound and light alarm controller, according to purposes, the gas sensor of models such as employing MQ-N can detect the multiple harmful gas of inflammable gas and flammable liquid steam (comprising: natural gas, coal gas, liquefied petroleum gas (LPG), hydrogen, olefines gas, gasoline, kerosene, alcohol, carbon monoxide, methyl alcohol, acetylene, Ammonia, ethers steam, smog etc.).Finite concentration can send sound, light is reported to the police when surpassing, and connects exhaust fan or air cleaning unit simultaneously or connects other locking links etc.

Its operating principle is described below:

After being somebody's turn to do " alarm controller " energized, by transformer B ₁Be depressurized to～5V and～13V.～5V is through D ₁～D ₄Full-wave rectification bridge rectification, C ₂Supply with trigger flip-flop and the work of sound equipment sheet after the filtering;～13V is through D ₅～D ₆Full-wave rectification and C ₁Supply with gas sensitive tube MQ-N work after the filtering,,, increase an adjustable potentiometer R at its load circuit in order to overcome the false alarm that the property a crossed smog causes _W, it can adjust sensitivity, while and R ₁, C ₅And BG ₁, BG ₂Complex pipe constitutes timing circuit.D ₈For hour also being stabilized in about 0.7 volt, complex pipe input end voltage-to-ground designs.When gas sensitive tube measures when approximately surpassing 0.05% carbon monoxide, the inner resistance of gas sensitive tube sharply descends, through time-delay, BG ₁Base stage b obtain 〉=1.4 volts current potential BG at this moment ₂In company with BG ₁Conducting, relay J is moved, and makes the normal opened contact J of relay ₁Closure, socket CZ energized, thereby starting motor-operated fan are discharged coal gas or other harmful gases outdoor.Reduce to below the standard value when harmful gas concentration, relay J is returned, and normal opened contact cuts off fan power supply.Because the complex pipe conducting reduces collector potential, HD is luminous, and simultaneously, this negative pulse is passed through C ₄To YF ₂Input end makes YF ₂Output terminal is a high level, gives KD15 integrated circuit sound equipment sheet one evoked potential, makes it send melodious melody.When harmful gas concentration dropped to finite concentration, complex pipe ended, and the current potential of collector c raises, R ₈The high voltage of getting passes through D ₇Make the bistable state upset, warning stops.After owner obtains reporting to the police, if no longer need acoustic alarm, can press reset button FA, make YF ₁An input end of door obtains electronegative potential and stops acoustic alarm.Trigger end at musical film KD15 integrated circuit is drawn socket 1CK, can pass through the external doorbell of plug, or water level off-limit alarm, or is contained in the door and window shelter, makes its normal opened contact closed and use as burglar alarm when having the people to be strayed into door and window.If there is not AC power, can be at DC13V and DC5V place and gas sensitive tube filament two ends add direct supply and also can make its work.For example use the warning of drivining a car under the influence of alcohol the driver, can be by the normally closed contact J of relay ₂Locking engine electrically control circuit.

Using this invention---multi-functional harmful gas sound and light alarm controller can demonstrate following advantage:

1. family uses this alarm controller, can significantly demonstrate its multi-functional advantage, and each family only uses an alarm controller, can replace original doorbell, gas leak detector, burglar alarm etc.2. after harmful gas surpasses certain standard, can start air cleaning units such as exhaust fan automatically, avoid having an accident; Be reduced to below the standard value and can automatically exhaust fan be stopped at harmful gas concentration.3. this alarm controller can use AC power, also can use direct supply; Both can use in that family is fixing, also can use in the playground of moving (drivining a car under the influence of alcohol etc.) as detecting the driver.4. owner user can arbitrarily make its alarm sound stop after warning.

Multi-functional harmful gas sound and light alarm controller is a kind of multi-functional aggregate, and it is simple in structure, be easy to make, have good practical value.According to different places, can choose the special-purpose gas sensitive tube of universal or some gas, different harmful gases is carried out broad spectrum activity or selectivity warning.Because plug connector is adopted in the installation of this product gas sensitive tube, only need plug promptly replaceable, very simple.According to the purposes difference, can also adopt the musical film of other KD chip families simultaneously, obtain the different acoustic effect.

Multi-functional harmful gas sound and light alarm controller is an essential product during people live, and can be widely used in family, the motor vehicle driver place that warning (or restriction) and various poisonous gas leakage be detrimental to health of drivining a car under the influence of alcohol.

Claims (1)

1. Multi-functional harmful gas sound and light alarm controller belongs to security protection with control signal device R, it is by power supply, gas-sensitive head, time-delay amplifying return circuit, by six most of compositions of contact control loop, light and audible alarm loop, external control loop, and feature of the present invention is:

   ＜1 〉, power unit, by transformer B ₁And D ₁～D ₄Full-wave rectification bridge and D ₅～D ₆Two loops of full-wave rectification are formed, and the former limit of transformer is for exchanging 220 volts of inputs; Pay limit L ₂For～5V; L ₃And L ₄All be～13V;

   ＜2 〉, gas-sensitive head is the universal gas sensitive tube of MQ-N, and can dials according to different purposes and insert the gas sensitive tube of changing other type;

   ＜3 〉, the time-delay amplifying return circuit is by R _W, R ₁, C ₅And complex pipe BG ₁And BG ₂Form, delay time is by R ₁With C ₅Numerical value decision;

   ＜4 〉, the contact control loop is arranged, mainly constitute by relay J, after the normal opened contact of J and accessory power outlet CZ are in series, be attempted by the input power supply on, the normally closed contact of relay J is outer lead wire;

   ＜5 〉, light and audio loop.Be to constitute by LED light emitting diode, bistable circuit, KD15 integrated circuit sound equipment sheet and YD loudspeaker;

   ＜6 〉, its external control loop is made up of 1CK and 2CK socket.

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