CN105608812A - Waterproof vehicle audio alarm device having self protection circuit - Google Patents
Waterproof vehicle audio alarm device having self protection circuit Download PDFInfo
- Publication number
- CN105608812A CN105608812A CN201610116926.6A CN201610116926A CN105608812A CN 105608812 A CN105608812 A CN 105608812A CN 201610116926 A CN201610116926 A CN 201610116926A CN 105608812 A CN105608812 A CN 105608812A
- Authority
- CN
- China
- Prior art keywords
- resistance
- capacitor
- circuit
- triode
- pin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B3/00—Audible signalling systems; Audible personal calling systems
- G08B3/10—Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/20—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Amplifiers (AREA)
Abstract
The invention belongs to the vehicle alarm device technology field and particularly relates to a waterproof vehicle audio alarm device having a self protection circuit. The waterproof vehicle audio alarm device comprises a high voltage protection circuit, an intermittent tone generation circuit, a power amplification and output current circuit and a loudspeaker, wherein an upper wall of a sound film of the loudspeaker is provided with a waterproof ventilation film, the loudspeaker is connected with a positive electrode end of the high voltage protection circuit, the other end of the loudspeaker is connected with the power amplification and output current circuit, the power amplification and output current circuit is connected with the intermittent tone generation circuit, the high voltage protection circuit comprises an electric signal anti-interference network module, an emitter follower module and a protection circuit module which are sequentially connected in series and further comprises a power source anti-interference network module connected with the emitter follower module, the power source anti-interference network module is connected with the intermittent tone generation circuit, the protection circuit module and the loudspeaker, and the electric signal anti-interference network module is further provided with a protection diode. The waterproof vehicle audio alarm device has the high voltage protection function and further has properties of good waterproof performance and long service life.
Description
Technical field
The invention belongs to automotive alarming device technical field, be specifically related to have the waterproof vehicle of self-protection circuitCarry audio alarm device.
Background technology
World technology is today of develop rapidly day by day, the continuous increase of vehicle guaranteeding organic quantity and for various roadsThe vehicle of condition constantly increases, and applies to the continuous increase of the motor vehicle of every field, as mine vehicle, cross-countryCar etc., the speed of a motor vehicle designs also in continuous raising, and it is particularly important that vehicle safety problem seems, like this for carThe design of the warning device of safety is also extremely important, is divided into reverse alarming at present for the warning device of vehicleDevice, phonetic alarm etc., profile variation, is acoustic alarm, the warning device of light warning and acousto-optic integrated,Function develops into the transformable tone of intelligence from single tone, if still vehicle is at extremely severe ringOperation under border is particularly worked, when often warning device is long under the South Pole or the arctic and extremely moist environmentBetween working life will shorten, sound reduces, under extremely moist environment, operation is that aqueous vapor is easily infiltratedTo loudspeaker, cause that this warning device sound lowers or operation irregularity.
Summary of the invention
For above-mentioned technical problem, the invention provides the waterproof vehicle carried audio warning dress with self-protection circuitPut, there is high voltage protective function, in the time that extraneous direct-current working volts are greater than 34V, quit work, avoid damaging,Current sinking is less, can send the prompt tone of CF, and its sound can reach 112 points in 1.2m place maximumShellfish, classification of waterproof is high, water proofing property is better, and service life is longer, is more adapted at operation under adverse circumstancesEngineering truck uses.
The technical scheme that the present invention solves its technical problem employing is as follows:
There is the waterproof vehicle carried audio warning device of self-protection circuit, comprise high tension protection circuit, a staccatoProduce circuit, power amplification and output current circuit and loudspeaker, described sound film of loudspeaker upper wall is provided withWaterproof ventilated membrane, under the state of steam, particle water is very tiny, according to the principle of capillary moving, canBe penetrated into smoothly capillary to opposite side, thereby vapour phenomenon occurs, when steam condensation becomes after the globule,It is large that grain becomes, and due to the capillary effect of the globule (between hydrone mutual " pull and contend with "), hydrone justCan not depart from smoothly the globule and be penetrated into opposite side, namely prevent that the infiltration of water from occurring, ventilated membrane has been hadThe function of waterproof, it is the inside and outside pressure of balance loudspeaker effectively and rapidly, and its sealing is not stressedImpact and change, meanwhile, the microcellular structure of waterproof ventilated membrane, can effectively stop entering of dust and waterEnter, ensure the use safety of loudspeaker, can make again the steam of the inside by micropore, under the effect of pressure,Be discharged to the outside of loudspeaker, ensure that the space of inner space is dry, make loudspeaker assembly not be subject to the corruption of steamErosion, increases the service life; Loudspeaker connects high tension protection circuit positive terminal, and the loudspeaker other end connects powerAmplify and output current circuit, between power amplification is connected with output current circuit, staccato produces circuit, loudspeakerOne end be directly connected with power positive end, in addition one end connect power amplifier, regulate potential difference by power amplifier, makeObtain the larger acoustic pressure of loudspeaker output, described high tension protection circuit comprises that the anti-signal of telecommunication of series connection successively disturbsMixed-media network modules mixed-media, emitter follower module, holding circuit module, also comprise being connected with emitter follower moduleThe anti-interference mixed-media network modules mixed-media of power supply, between the anti-interference mixed-media network modules mixed-media of power supply connects, staccato produces circuit, holding circuit mouldPiece is connected with loudspeaker, and the anti-signal of telecommunication is also provided with protection diode before disturbing mixed-media network modules mixed-media, and the anti-signal of telecommunication disturbsMixed-media network modules mixed-media connects protection diode cathode, and protection diode cathode connects power supply, and protection diode can be preventedOnly damage because power positive cathode reversal connection causes subsequent conditioning circuit, the anti-signal of telecommunication disturbs mixed-media network modules mixed-media can prevent workWhile work, the Electromagnetic Wave of extraneous signal causes the damage of circuit, and the anti-interference mixed-media network modules mixed-media of power supply can prevent power supplyFluctuation causes circuit malfunction, and emitter follower module provides stable operating voltage to integrated circuit, protection electricityRoad module makes this device quit work higher than 34V, better to protect subsequent conditioning circuit, is unlikely to damage,Reach and extend the service life of this device.
Further, the described anti-signal of telecommunication disturbs mixed-media network modules mixed-media by magnetic bead L1, capacitor C 1, capacitor C 5, electricityHold C9 and magnetic bead L2 and form, magnetic bead L1, magnetic bead L2 connect successively, capacitor C 1, capacitor C 5, capacitor C 9After parallel connection, be connected between magnetic bead L1, magnetic bead L2, described emitter follower module is by resistance R 0, electric capacityC0, triode Q5, Zener diode ZD1 form, and the colelctor electrode of resistance R 0 and triode Q5 and base stage are alsoConnection, triode Q5 base stage is connected with diode ZD1 negative pole, diode ZD1 plus earth, resistance R 0 andDiode ZD1 parallel connection, described holding circuit module is by triode Q4, Zener diode ZD2 and resistance R 10Form, triode Q4 colelctor electrode is connected with Zener diode ZD1 negative pole, triode Q4 emitter stage and voltage stabilizingThe anodal utmost point of diode ZD1 connects, and triode Q4 base stage is connected successively with resistance R 10, Zener diode ZD2,Zener diode ZD2 negative pole connects loudspeaker.
Further, the anti-interference mixed-media network modules mixed-media of described power supply is by magnetic bead L3, capacitor C 10, capacitor C 11, electricityHold C12 and form, after capacitor C 10, capacitor C 11, capacitor C 12 is in parallel, connect with magnetic bead L3, magnetic bead L3 andTriode Q5 emitter stage connects, and capacitor C 10, capacitor C 11, capacitor C 12 in parallel connect described interruptionSound produces circuit, ensures that power supply anti-interference mixed-media network modules mixed-media can play to prevent that power-supply fluctuation from causing circuit malfunctionEffect.
Further, between described staccato produce circuit by integrated circuit CD4011, resistance R 1, resistance R 2,Resistance R 3, resistance R 4, resistance R 5, adjustable resistance RT, capacitor C 2 and capacitor C 3 form, resistance R 3 withResistance R 2, resistance R 1 access the 3rd pin, the 5th pin, the 6th pin of integrated circuit CD4011 after connecting successively,Capacitor C 2 and resistance R 2, resistance R 1 are in parallel, and resistance R 3 accesses the 1st pin, of integrated circuit CD40112 pin, capacitor C 2 accesses the 4th pin of integrated circuit CD4011, the 7th pin ground connection of integrated circuit CD4011,Connect with resistance R 4, resistance R 5 respectively in the two ends of adjustable resistance RT, adjustable end and the electric capacity of adjustable resistance RTC3 series connection, capacitor C 3 accesses the 11st pin of integrated circuit CD4011, the 13rd pin of integrated circuit CD4011,The 12nd pin, the 10th pin are connected with resistance R 5, and the 9th pin of integrated circuit CD4011 is connected with resistance R 4,Described capacitor C 3 connects power amplification and output current circuit.
Further, described capacitor C 10 connects the 14th pin of integrated circuit CD4011, electricity in parallelHold C10, capacitor C 11, capacitor C 12 ground connection, for a staccato produces circuit supply, and provide stable workVoltage.
Integrated circuit CD4011 comprises 4 NAND gates, 4 NAND gates comprise 4011A, 4011B, 4011C,4011D, two inputs of 4011A be the 13rd pin, the 12nd pin of integrated circuit CD4011,4011AOutput be the 11st pin of integrated circuit CD4011, two inputs of 4011B and be integrated circuitThe 9th pin of CD4011, the 8th pin, the output of 4011B be the 10th pin of integrated circuit CD4011,Two inputs of 4011A be the 13rd pin, the 12nd pin of integrated circuit CD4011, two of 4011CInput be the 1st pin, the 2nd pin of integrated circuit CD4011, the output of 4011C and be integrated circuitThe 3rd pin of CD4011, two inputs of 4011D be the 5th pin, the 6th of integrated circuit CD4011Pin, the output of 4011D be the 4th pin of integrated circuit CD4011, the 4th pin connection the 8th pin, resistanceR4, resistance R 5, adjustable resistance RT, capacitor C 2, capacitor C 3 and 4011A, 4011B composition adjustable circuitThe frequency modulation unit of operating frequency, regulate the resistance of adjustable resistance RT, the operating frequency of circuit is existedBetween 960-1440Hz, resistance R 2, resistance R 3, resistance R 1, capacitor C 2 and 4011C, 4011D compositionOutput per minute is interrupted the square wave output unit of tone signal, the 7th pin of integrated circuit CD4011 45-75 timesGround connection, holding circuit prevents the voltage circuit elements device of breaking, the 14th connects leg is connected with capacitor C 10, makesHigh tension protection circuit provides stable operating voltage for a staccato produces circuit.
Further, described power amplification and output current circuit are by resistance R 6, R7, resistance R 8, resistanceR9, triode Q2, triode Q3 form, and resistance R 6 one end are connected with described capacitor C 3, the other end andThe base stage of triode Q2 connects, and the colelctor electrode of triode Q2 connects loudspeaker, and triode Q3 colelctor electrode connectsTriode Q2 base stage, triode Q3 base stage connecting triode Q2 emitter stage, described resistance R 7, resistanceR8, resistance R 9 rear one end in parallel are connected with triode Q3 emitter stage, other end connecting triode Q3 base stage,Triode Q2 emitter stage, triode Q2, triode Q3, resistance R 6, resistance R 8, resistance R 9 form meritRate amplifying circuit, triode Q3, resistance R 7, resistance R 8, resistance R 9 form negative-feedback circuit, and square wave is defeatedGo out the square-wave signal that unit produces and flow to power amplification circuit, the resistance of adjustable resistance RT can be according to specificallyEnvironment for use and the engineering truck using specifically adjust, make work that integrated staccato produce circuit frequentlyFrequently between 960-1440Hz, in this frequency band, the square-wave signal that square wave output unit produces is put through powerThe amplification of circuit is also exported to loudspeaker greatly, the alarm sound being interrupted by loudspeaker conversion output, alarm soundAcoustic pressure can reach very high, this device is provided with small and exquisite shell, shell adopt fire proofing so that engineeringCar at high temperature can normally be worked, and does not burn and causes danger, and loudspeaker can send the prompt tone of CF,The shell that drips alarm sound and this warning device of this frequency band resonates, and its sound can in 1.2m place maximumTo reach 112 decibels, improve the effect of reporting to the police, and the acoustic pressure of alarm sound is higher, is adapted in noisy environmentsWork, is satisfied with the warning user demand of working truck in noisy environments, and can does according to concrete environmentGo out to adjust, the acoustic pressure of alarm sound is conformed to environment, strengthen warning effect.
Further, described resistance R 6 is coupling resistance, and described triode Q2 is high power valve, adoptsWith high power valve triode, Q2 can bear larger power, triode Q3, resistance R 7, resistance R 8, resistance R 9The negative-feedback circuit of composition, in the time that current break increases, electric current can pass through resistance R 7 feedback resistances, reduces electricityStream, makes current stabilization, and to increase the life-span of product, the negative-feedback circuit of power amplifier module, can subtractLittle and stabling current, avoids circuit to damage because the unexpected variation of voltage and current makes components and parts, and prolongation makesUse the life-span.
And impel acoustic pressure can be controlled in certain scope, supply module can under the effect of Voltage stabilizing moduleConnect the dc source that uses 12V-80V, Voltage stabilizing module can be by the direct current supply voltage transitions of 12V-80VFor the rated operational voltage of a staccato generation module and power amplifier module, supply module has been widened this warning and has been sent outThe supply voltage of generating apparatus, wider supply voltage can meet more demand, expands this warning and fillsThe scope of application of putting.
Further, the material of described waterproof ventilated membrane is ePTFE, PTFE make waterproof ventilated membraneThere is extremely strong inertia, with anything, chemical reaction occurs hardly, there is extremely strong corrosion resistance, anti-purpleAging, the cold-resistant heat-resisting quantity (40 °～125 °) of outside line, makes ventilated membrane in use, Ke YichangPhase effectively ensures the use safety of this device.
The obtained beneficial effect of the present invention is: adopt such scheme, have high voltage protective function, outside working asWhen boundary's direct-current working volts are greater than 34V, this device quits work, to protect the internal wiring of this device, unlikelyIn damage, loudspeaker tibial membrane is provided with waterproof ventilated membrane, avoids water in environment and some liquid to enter and raisesSound device inside causes that speaker is low, cacophonia or tone-off phenomenon, and power amplification circuit can be sent out this deviceGo out very large alarm sound, improve warning function.
Brief description of the drawings
By the detailed description below in conjunction with accompanying drawing, aforesaid and other object, the feature and advantage of the present inventionTo become apparent.
Fig. 1 is circuit diagram of the present invention.
Fig. 2 is the circuit diagram of high tension protection circuit of the present invention.
Fig. 3 is the circuit diagram of power amplification of the present invention and output current circuit.
Fig. 4 is the circuit diagram that this staccato produces circuit.
Wherein: 1 is high tension protection circuit, 1.1 is that the anti-signal of telecommunication disturbs mixed-media network modules mixed-media, and 1.2 is emitter followerModule, 1.3 is holding circuit module, 1.4 is the anti-interference mixed-media network modules mixed-media of power supply, 2 be between staccato produce circuit,2.1 is square wave output unit, and 2.2 is frequency modulation unit, and 3 is power amplification and output current circuit, and 4 for raising one's voiceDevice.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in detail.
The waterproof vehicle carried audio warning device with self-protection circuit as shown in Figure 1, comprises high voltage protectiveCircuit 1, a staccato produce circuit 2, power amplification and output current circuit 3 and loudspeaker 4, loudspeaker4 sound film upper walls are provided with waterproof ventilated membrane, and under the state of steam, particle water is very tiny, according to capillary movingPrinciple, can be penetrated into smoothly capillary to opposite side, thereby vapour phenomenon occurs, when steam condensation becomeBecome after the globule, it is large that particle becomes, due to the capillary effect of the globule (between hydrone mutual " pull and contend with "),Hydrone just can not depart from smoothly the globule and be penetrated into opposite side, has namely prevented that the infiltration of water from occurring, and makesAir film has had the function of waterproof, and it is the inside and outside pressure of balance loudspeaker effectively and rapidly, makes its sealingThe impact not being stressed and changing, meanwhile, the microcellular structure of waterproof ventilated membrane, can effectively stop dustWith entering of water, ensure the use safety of loudspeaker, can make again the steam of the inside by micropore, at pressureEffect under, be discharged to the outside of loudspeaker, ensure that the space of inner space is dry, make loudspeaker assembly notBe subject to the corrosion of steam, increase the service life, the material of saturating 6 air films of waterproof is ePTFE, and the making of PTFE preventedWater ventilated membrane has extremely strong inertia, with anything, chemical reaction occurs hardly, has extremely strong corrosion-resistantProperty, anti-ultraviolet aging, cold-resistant heat-resisting quantity (40 °～125 °), make ventilated membrane in use, canWith the use safety of permanently effective this device of guarantee, make the waterproof rank of this device reach IP68.
Loudspeaker 4 connects the positive terminal of high tension protection circuit 1, and the other end of loudspeaker 4 connects power amplificationWith output current circuit 3, one end of loudspeaker 4 is directly connected with power positive end, and one end connects power amplifier in addition,Regulate potential difference by power amplifier, make larger acoustic pressure, power amplification and the output current electricity of loudspeaker outputBetween road 3 connects, staccato produces circuit 2.
High tension protection circuit 1 comprises that the anti-signal of telecommunication of series connection successively disturbs mixed-media network modules mixed-media 1.1, penetrates as shown in Figure 2Utmost point follower module 1.2, holding circuit module 1.3, also comprise the electricity being connected with emitter follower module 1.2The anti-interference mixed-media network modules mixed-media 1.4 in source, between the anti-interference mixed-media network modules mixed-media 1.4 of power supply connects, staccato produces circuit 2, protectionCircuit module 1.3 is connected with loudspeaker 4, and the anti-signal of telecommunication is also provided with protection two utmost points before disturbing mixed-media network modules mixed-media 1.1Pipe D1, the anti-signal of telecommunication disturbs mixed-media network modules mixed-media 1.1 to connect protection diode D1 negative pole, and protection diode D1 is justThe utmost point connects power supply, and protection diode D1 can prevent from damaging because power positive cathode reversal connection causes subsequent conditioning circuit.
The anti-signal of telecommunication disturbs mixed-media network modules mixed-media 1.1 by magnetic bead L1, capacitor C 1, capacitor C 5, capacitor C 9 and magnetic beadL2 forms, and magnetic bead L1, magnetic bead L2 connect successively, capacitor C 1, capacitor C 5, capacitor C 9 rear series connection in parallelBetween magnetic bead L1, magnetic bead L2, the electricity of extraneous signal when the anti-signal of telecommunication disturbs mixed-media network modules mixed-media to prevent workThe moving damage that causes circuit of magnetic wave; Emitter follower module 1.2 by resistance R 0, capacitor C 0, triode Q5,Zener diode ZD1 forms, and resistance R 0 is in parallel with base stage with the colelctor electrode of triode Q5, triode Q5 baseThe utmost point is connected with diode ZD1 negative pole, diode ZD1 plus earth, and resistance R 0 is in parallel with diode ZD1,Emitter follower module 1.2 provides stable operating voltage to integrated circuit; Holding circuit module 1.3 is by threeUtmost point pipe Q4, Zener diode ZD2 and resistance R 10 form, triode Q4 colelctor electrode and Zener diode ZD1Negative pole connects, and the anodal utmost point of triode Q4 emitter stage and Zener diode ZD1 is connected, triode Q4 base stage andResistance R 10, Zener diode ZD2 connect successively, and Zener diode ZD2 negative pole connects loudspeaker, protection electricityRoad module 1.3 makes this device quit work higher than 34V, better to protect subsequent conditioning circuit, is unlikely to damageBad, reach and extend service life of this device; The anti-interference mixed-media network modules mixed-media 1.4 of power supply is by magnetic bead L3, electric capacityC10, capacitor C 11, capacitor C 12 form, capacitor C 10, capacitor C 11, capacitor C 12 rear and magnetic bead in parallelL3 series connection, magnetic bead L3 is connected with triode Q5 emitter stage, capacitor C 10, capacitor C 11, electric capacity in parallelC12 connect described between staccato produce circuit, 1.4 of the anti-interference mixed-media network modules mixed-medias of power supply can prevent that power-supply fluctuation from drawingPlay circuit malfunction, magnetic bead L1, magnetic bead L2 are ferrite bean.
Staccato as shown in Figure 4 produces circuit by integrated circuit CD4011, resistance R 1, resistance R 2, resistanceR3, resistance R 4, resistance R 5, adjustable resistance RT, capacitor C 2 and capacitor C 3 form, resistance R 3 and resistanceR2, resistance R 1 access the 3rd pin, the 5th pin, the 6th pin of integrated circuit CD4011, electricity after connecting successivelyHold C2 and resistance R 2, resistance R 1 is in parallel, resistance R 3 accesses the 1st pin, the 2nd of integrated circuit CD4011Pin, capacitor C 2 accesses the 4th pin of integrated circuit CD4011, the 7th pin ground connection of integrated circuit CD4011,Connect with resistance R 4, resistance R 5 respectively in the two ends of adjustable resistance RT, adjustable end and the electric capacity of adjustable resistance RTC3 series connection, capacitor C 3 accesses the 11st pin of integrated circuit CD4011, the 13rd pin of integrated circuit CD4011,The 12nd pin, the 10th pin are connected with resistance R 5, and the 9th pin of integrated circuit CD4011 is connected with resistance R 4,Capacitor C 3 connects power amplification and output current circuit, and capacitor C 10 connects the 14th of integrated circuit CD4011Pin, capacitor C 10, capacitor C 11, capacitor C 12 ground connection in parallel, for a staccato produces circuit supply, and carryFor stable operating voltage.
Integrated circuit CD4011 comprises 4 NAND gates, 4 NAND gates comprise 4011A, 4011B, 4011C,4011D, two inputs of 4011A be the 13rd pin, the 12nd pin of integrated circuit CD4011,4011AOutput be the 11st pin of integrated circuit CD4011, two inputs of 4011B and be integrated circuitThe 9th pin of CD4011, the 8th pin, the output of 4011B be the 10th pin of integrated circuit CD4011,Two inputs of 4011A be the 13rd pin, the 12nd pin of integrated circuit CD4011, two of 4011CInput be the 1st pin, the 2nd pin of integrated circuit CD4011, the output of 4011C and be integrated circuitThe 3rd pin of CD4011, two inputs of 4011D be the 5th pin, the 6th of integrated circuit CD4011Pin, the output of 4011D be the 4th pin of integrated circuit CD4011, the 4th pin connection the 8th pin, resistanceR4, resistance R 5, adjustable resistance RT, capacitor C 2, capacitor C 3 and 4011A, 4011B composition adjustable circuitThe frequency modulation unit 2.2 of operating frequency, regulate the resistance of adjustable resistance RT, the operating frequency of circuit is existedBetween 960-1440Hz, resistance R 2, resistance R 3, resistance R 1, capacitor C 2 and 4011C, 4011D compositionOutput per minute is interrupted the square wave output unit 2.1 of tone signal, the 7th of integrated circuit CD4011 45-75 timesPin ground connection, holding circuit prevents the voltage circuit elements device of breaking, the 14th connects leg is connected with capacitor C 10,Make high tension protection circuit provide stable operating voltage for a staccato produces circuit.
Power amplification and output current circuit are by resistance R 6, R7, resistance R 8, resistance R 9, three utmost points as shown in Figure 3Pipe Q2, triode Q3 form, and resistance R 6 one end are connected with described capacitor C 3, the other end and triode Q2'sBase stage connects, and the colelctor electrode of triode Q2 connects loudspeaker, triode Q3 colelctor electrode connecting triode Q2 base stage,Triode Q3 base stage connecting triode Q2 emitter stage, resistance R 7, resistance R 8, resistance R 9 rear one end and three in parallelUtmost point pipe Q3 emitter stage connects, other end connecting triode Q3 base stage, triode Q2 emitter stage, triode Q2,Triode Q3, resistance R 6, resistance R 8, resistance R 9 form power amplification circuit 3.2, triode Q3, resistance R 7,Resistance R 8, resistance R 9 form negative-feedback circuit 3.1, and resistance R 6 is coupling resistance, and triode Q2 is high power valve,Adopt high power valve triode Q2 can bear larger power, triode Q3, resistance R 7, resistance R 8, resistanceThe negative-feedback circuit of R9 composition, in the time that current break increases, electric current can pass through resistance R 7 feedback resistances, reducesElectric current, makes current stabilization, avoids circuit to damage because the unexpected variation of voltage and current makes components and parts,To extend the life-span of product.
The square-wave signal that square wave output unit 2.1 produces flows to power amplification circuit 3.2, adjustable resistance RT'sResistance can specifically be adjusted according to concrete environment for use and the engineering truck using, and makes integrated staccatoThe work of generation circuit 2 is again and again between 960-1440Hz, and in this frequency band, square wave output unit 2.1 producesRaw square-wave signal is through the amplification of power amplification circuit 3.2 and export to loudspeaker 4, changes output by loudspeaker 4The alarm sound being interrupted, it is very high that the acoustic pressure of alarm sound can reach, and this device is provided with small and exquisite shell, outerShell adopts fire proofing, so that engineering truck at high temperature can normally be worked, does not burn and causes danger, loudspeaker 4Can send the prompt tone of CF, the shell that drips alarm sound and this warning device of this frequency band occurs altogetherShake, its sound can reach 112 decibels in 1.2m place maximum, improves the effect of reporting to the police, and the acoustic pressure of alarm soundHigher, be adapted at working in noisy environments, be satisfied with the warning user demand of working truck in noisy environments,And can adjust according to concrete environment, the acoustic pressure of alarm sound is conformed to environment, strengthen warning effect.
Technical parameter of the present invention is: operating voltage range direct current 9-33V, and rated operational voltage 12V/24V,Operating current < 700mA, sound frequency: 960-1440Hz, operating temperature :-50-+85 DEG C, continuous operationTime: 1000H, acoustic pressure: 112 decibels.
Shell of the present invention adopts fire proofing, so that engineering truck at high temperature can normally be worked, does not burn and drawsRise dangerously, on loudspeaker tibial membrane, stick waterproof ventilated membrane, classification of waterproof is high, avoid water in environment andSome liquid enter that inside loudspeakers causes that speaker is low, cacophonia or tone-off phenomenon, merit of the present inventionRate amplifying circuit makes the present invention can send very large alarm sound, improves and plays warning function, due to high voltage protectiveThe protective effect of circuit, in the time that extraneous direct-current working volts are greater than 34V, the present invention quits work, to protect thisThe internal wiring of invention, is unlikely to damage 5, has the longer life-span.
The foregoing is only the preferred embodiments of the present invention, not thereby limit the scope of the claims of the present invention, allTo utilize equivalent structure or the conversion of equivalent flow process that description of the present invention and accompanying drawing content do, or directly orConnect and be used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (7)
1. the waterproof vehicle carried audio warning device with self-protection circuit, is characterized in that: comprise high pressureHolding circuit, a staccato produce circuit, power amplification and output current circuit and loudspeaker, describedSound film of loudspeaker upper wall is provided with waterproof ventilated membrane, and loudspeaker connects high tension protection circuit positive terminal, loudspeakerThe other end connects power amplification and output current circuit, staccato between power amplification is connected with output current circuitProduce circuit, described high tension protection circuit comprises that the anti-signal of telecommunication of series connection successively disturbs mixed-media network modules mixed-media, penetratesUtmost point follower module, holding circuit module, also comprise that the power supply being connected with emitter follower module is anti-interferenceMixed-media network modules mixed-media, between the anti-interference mixed-media network modules mixed-media of power supply connects, staccato produces circuit, holding circuit module with raise one's voiceDevice connects, and the anti-signal of telecommunication is also provided with protection diode before disturbing mixed-media network modules mixed-media, and the anti-signal of telecommunication disturbs network mouldPiece connects protection diode cathode, and protection diode cathode connects power supply.
2. the waterproof vehicle carried audio warning device with self-protection circuit according to claim 1,It is characterized in that: the described anti-signal of telecommunication disturbs mixed-media network modules mixed-media by magnetic bead L1, capacitor C 1, capacitor C 5, electricityHold C9 and magnetic bead L2 and form, magnetic bead L1, magnetic bead L2 connect successively, capacitor C 1, capacitor C 5, electric capacityAfter C9 parallel connection, be connected between magnetic bead L1, magnetic bead L2, described emitter follower module by resistance R 0,Capacitor C 0, triode Q5, Zener diode ZD1 form, the colelctor electrode of resistance R 0 and triode Q5 withBase stage parallel connection, triode Q5 base stage is connected with diode ZD1 negative pole, diode ZD1 plus earth, electricityR0 is in parallel with diode ZD1 in resistance, and described holding circuit module is by triode Q4, Zener diode ZD2Form with resistance R 10, triode Q4 colelctor electrode is connected with Zener diode ZD1 negative pole, triode Q4Emitter stage is connected with the anodal utmost point of Zener diode ZD1, triode Q4 base stage and resistance R 10, voltage stabilizing two utmost pointsPipe ZD2 connects successively, and Zener diode ZD2 negative pole connects loudspeaker, the anti-interference network of described power supplyModule is made up of magnetic bead L3, capacitor C 10, capacitor C 11, capacitor C 12, capacitor C 10, capacitor C 11,After capacitor C 12 is in parallel, connect with magnetic bead L3, magnetic bead L3 is connected with triode Q5 emitter stage, electricity in parallelBetween described in appearance C10, capacitor C 11, capacitor C 12 connect, staccato produces circuit.
3. the waterproof vehicle carried audio warning device with self-protection circuit according to claim 1,It is characterized in that: between described staccato produce circuit by integrated circuit CD4011, resistance R 1, resistance R 2,Resistance R 3, resistance R 4, resistance R 5, adjustable resistance RT, capacitor C 2 and capacitor C 3 form, resistance R 3With the 3rd pin of access integrated circuit CD4011 after resistance R 2, resistance R 1 are connected successively, the 5th pin, the6 pin, capacitor C 2 and resistance R 2, resistance R 1 are in parallel, and resistance R 3 accesses the 1st of integrated circuit CD4011Pin, the 2nd pin, capacitor C 2 accesses the 4th pin of integrated circuit CD4011, of integrated circuit CD40117 pin ground connection, connect with resistance R 4, resistance R 5 respectively in the two ends of adjustable resistance RT, adjustable resistance RT'sAdjustable end is connected with capacitor C 3, and capacitor C 3 accesses the 11st pin of integrated circuit CD4011, integrated circuitThe 13rd pin of CD4011, the 12nd pin, the 10th pin are connected with resistance R 5, of integrated circuit CD40119 pin are connected with resistance R 4, and described capacitor C 3 connects power amplification and output current circuit.
4. according to the vehicle-mounted sound of the waterproof with self-protection circuit described in claim 2 or 3 any oneFrequently warning device, is characterized in that: described capacitor C 10 connects the 14th pin of integrated circuit CD4011,Capacitor C 10, capacitor C 11, capacitor C 12 ground connection in parallel.
5. according to the vehicle-mounted sound of the waterproof with self-protection circuit described in claim 1 or 3 any oneFrequently warning device, is characterized in that: described power amplification and output current circuit by resistance R 6, R7,Resistance R 8, resistance R 9, triode Q2, triode Q3 form, resistance R 6 one end and described electric capacityC3 connects, and the other end is connected with the base stage of triode Q2, and the colelctor electrode of triode Q2 connects loudspeaker,Triode Q3 colelctor electrode connecting triode Q2 base stage, triode Q3 base stage connecting triode Q2 emitter stage,After described resistance R 7, resistance R 8, resistance R 9 is in parallel, one end is connected with triode Q3 emitter stage, anotherEnd connecting triode Q3 base stage, triode Q2 emitter stage, triode Q2, triode Q3, resistance R 6,Resistance R 8, resistance R 9 form power amplification circuit, triode Q3, resistance R 7, resistance R 8, resistance R 9Composition negative-feedback circuit.
6. the waterproof vehicle carried audio warning device with self-protection circuit according to claim 5,It is characterized in that: described resistance R 6 is coupling resistance, and described triode Q2 is high power valve.
7. the waterproof vehicle carried audio warning device with self-protection circuit according to claim 1,It is characterized in that: the material of described waterproof ventilated membrane is ePTFE.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610116926.6A CN105608812B (en) | 2016-03-01 | 2016-03-01 | Waterproof vehicle carried audio warning device with self-protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610116926.6A CN105608812B (en) | 2016-03-01 | 2016-03-01 | Waterproof vehicle carried audio warning device with self-protection circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105608812A true CN105608812A (en) | 2016-05-25 |
| CN105608812B CN105608812B (en) | 2018-01-26 |
Family
ID=55988719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610116926.6A Active CN105608812B (en) | 2016-03-01 | 2016-03-01 | Waterproof vehicle carried audio warning device with self-protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105608812B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106542008A (en) * | 2016-12-08 | 2017-03-29 | 安溪县中磊设备制造有限公司 | A kind of intelligence Handling device for loading oil exploration equipment |
| CN111439124A (en) * | 2020-03-18 | 2020-07-24 | 吉利汽车研究院（宁波）有限公司 | Separated instrument loudspeaker and control method thereof |
| CN113628398A (en) * | 2021-07-08 | 2021-11-09 | 汉得利（常州）电子股份有限公司 | Novel alarm based on digital pulse drive |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1031770A (en) * | 1987-09-01 | 1989-03-15 | 潘应光 | Programming digital code type automatic radio robbery-defence alarm |
| CN2098748U (en) * | 1991-08-19 | 1992-03-11 | 汪毅 | Auto-breaker for household audio and video tape recorders |
| US20030202301A1 (en) * | 2002-04-24 | 2003-10-30 | Jackson David Ross | Method for preventing the generation of excessive high voltage |
| US20060176190A1 (en) * | 2005-01-24 | 2006-08-10 | Madison Brian C | Emergency vehicle alert system |
| CN101783053A (en) * | 2010-02-01 | 2010-07-21 | 汉得利（常州）电子有限公司 | Adjustable intelligent acoustic pressure warner |
| US20100227584A1 (en) * | 2009-03-03 | 2010-09-09 | Airbiquity Inc. | In-vehicle system (ivs) control of emergency data communications |
| JP2012059203A (en) * | 2010-09-13 | 2012-03-22 | Nec Access Technica Ltd | Specific audio recognition apparatus and specific audio recognition method |
-
2016
- 2016-03-01 CN CN201610116926.6A patent/CN105608812B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1031770A (en) * | 1987-09-01 | 1989-03-15 | 潘应光 | Programming digital code type automatic radio robbery-defence alarm |
| CN2098748U (en) * | 1991-08-19 | 1992-03-11 | 汪毅 | Auto-breaker for household audio and video tape recorders |
| US20030202301A1 (en) * | 2002-04-24 | 2003-10-30 | Jackson David Ross | Method for preventing the generation of excessive high voltage |
| US20060176190A1 (en) * | 2005-01-24 | 2006-08-10 | Madison Brian C | Emergency vehicle alert system |
| US20100227584A1 (en) * | 2009-03-03 | 2010-09-09 | Airbiquity Inc. | In-vehicle system (ivs) control of emergency data communications |
| CN101783053A (en) * | 2010-02-01 | 2010-07-21 | 汉得利（常州）电子有限公司 | Adjustable intelligent acoustic pressure warner |
| JP2012059203A (en) * | 2010-09-13 | 2012-03-22 | Nec Access Technica Ltd | Specific audio recognition apparatus and specific audio recognition method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106542008A (en) * | 2016-12-08 | 2017-03-29 | 安溪县中磊设备制造有限公司 | A kind of intelligence Handling device for loading oil exploration equipment |
| CN111439124A (en) * | 2020-03-18 | 2020-07-24 | 吉利汽车研究院（宁波）有限公司 | Separated instrument loudspeaker and control method thereof |
| CN111439124B (en) * | 2020-03-18 | 2022-03-08 | 吉利汽车研究院（宁波）有限公司 | Separated instrument loudspeaker and control method thereof |
| CN113628398A (en) * | 2021-07-08 | 2021-11-09 | 汉得利（常州）电子股份有限公司 | Novel alarm based on digital pulse drive |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105608812B (en) | 2018-01-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105608812A (en) | Waterproof vehicle audio alarm device having self protection circuit | |
| CN104901199A (en) | High-safety AC low-voltage power distribution cabinet | |
| CN204189265U (en) | A kind of high sensitivity forest fire protection smoke alarm | |
| CN103927843A (en) | Smoke alarm | |
| CN203827680U (en) | Cooling device for electrical cabinet | |
| CN201928565U (en) | Overheating protection circuit of industrial personal computer component | |
| CN203984359U (en) | A kind of onboard audio power amplification circuit | |
| CN202143347U (en) | Electromagnetic compatible (EMC) waterproof ventilating bolt | |
| CN208858648U (en) | A kind of insulation construction of blower | |
| CN206923174U (en) | A kind of new light current equipment box | |
| CN208445917U (en) | A kind of engineering machinery gas control cabinet | |
| CN208225410U (en) | A kind of complete outdoor wall hanging is compatible with LCD advertisement machine anyhow | |
| CN204719567U (en) | Dehumidifier | |
| CN204926388U (en) | Alarm | |
| CN201906388U (en) | Wireless water leakage monitoring circuit for fire hydrant | |
| CN204136865U (en) | The vehicle carried generating means of Width funtion high power intelligent | |
| CN204330172U (en) | A kind of easy overtemperature alarm | |
| CN210574225U (en) | Alarm circuit for gas leakage monitoring alarm device | |
| CN206039778U (en) | Multi -functional thing networking fire extinguishing system | |
| CN206691004U (en) | Electric automobile low speed prompt tone internal and external pressure balance heat abstractor | |
| CN204390390U (en) | Break line type acousto-optic monitoring device | |
| CN104284568A (en) | Blast heat dissipation type high-voltage pulse electronic fence host | |
| CN104778943A (en) | Improved mining explosion-proof electronic horn | |
| CN108806528A (en) | A kind of complete outdoor wall hanging is compatible with LCD advertisement machines anyhow | |
| CN203418683U (en) | Ventilation exhaust type box for granulator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |