CN103648074B - Motor vehicle micro-current automatically controls contactless electron waterproof speaker - Google Patents
Motor vehicle micro-current automatically controls contactless electron waterproof speaker Download PDFInfo
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- CN103648074B CN103648074B CN201310727609.4A CN201310727609A CN103648074B CN 103648074 B CN103648074 B CN 103648074B CN 201310727609 A CN201310727609 A CN 201310727609A CN 103648074 B CN103648074 B CN 103648074B
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- 230000010355 oscillation Effects 0.000 claims description 11
- 230000005611 electricity Effects 0.000 claims description 4
- 238000004078 waterproofing Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 3
- 239000002184 metal Substances 0.000 abstract description 3
- 239000007769 metal material Substances 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000005236 sound signal Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010892 electric spark Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
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Abstract
A kind of motor vehicle micro-current automatically controls contactless electron waterproof speaker, switched by micro-current, time control circuit, audio oscillator circuit, power amplifier and loudspeaker are sequentially connected and constituted, the on/off and working condition of micro-current switch control time control circuit, audio oscillator circuit and power amplifier；The control pole of described time control circuit is also associated with overvoltage crowbar.This invention simplifies assembly line construction, relay is saved, cost is reduced, metal material is saved, button switch electric current is less than 30 μ A, so as to conductive rubber substituted metal contact button, greatly increase the service life.
Description
Technical field
The present invention relates to the electric elements in electricity field, specifically refer to a kind of micro-current automatically control contactless electron prevent
Water loudspeaker.
Background technology
Traditional loudspeaker pronunciation assembly, is made up of the connection of button switch K, relay J and loudspeaker, button switch control relay
Device, and relay contact KJIt is connected in the loop that storage battery is powered to horn coil, sees Fig. 1, this traditional loudspeaker pronunciation is total
Into there are the following problems：
1）Using relay J, because relay coil line footpath is small, judder is travelled by vehicle, relay coil is easy
Broken string；
2）Relay contact KJAfter a period of time, the electric spark of generation easily causes loose contact；
3）When loudspeaker work, storage battery is directly powered to horn coil, and electric current is big, and relay contact and horn coil easily burn
It is bad；
4）The operating current of relay coil and button switch branch road is big, up to 250mA, and power consumption is big, make relay coil and
Button switch aging is fast, and service life is short.
The content of the invention
The technical problems to be solved by the invention are：The problem of above-mentioned prior art is present is solved, and provides a kind of motor-driven
Car micro-current automatically controls contactless electron waterproof speaker, simplifies assembly line construction, saves relay, reduce cost, saves
Metal material, button switch electric current is less than 30 μ A, sees Fig. 2, so as to use conductive rubber substituted metal contact button, greatly extension
Service life.
The technical solution adopted by the present invention is：
A kind of motor vehicle micro-current automatically controls contactless electron waterproof speaker, switched by micro-current, time control circuit,
Audio oscillator circuit, power amplifier and loudspeaker are sequentially connected composition, micro-current switch control time control circuit, audio oscillation
The on/off and working condition of circuit and power amplifier；The control pole of described time control circuit is also associated with over-pressed guarantor
Protection circuit.
In above-mentioned technical proposal, described micro-current is switched by triode and is connected on transistor base input circuit
Button switch is constituted.
In above-mentioned technical proposal, described button switch uses conducting rubber button.
In above-mentioned technical proposal, described time control circuit is by transistor circuit and the RC being connected on transistor base
Be delayed charge-discharge circuit composition.
In above-mentioned technical proposal, described overvoltage crowbar is by the mu balanced circuit that is connected in time control circuit base stage
Composition.
In above-mentioned technical proposal, the resistance of resistive element is less than 15K in described audio oscillator circuit, constitutes waterproofing protection
Circuit.
The present invention is put by micro-current switch control time control circuit, overvoltage crowbar, audio oscillator circuit and power
Big device on/off and working condition.After micro-current, which is switched, to be connected, time control circuit enters working condition, audio oscillation electricity
Road produces audio input to power amplifier, and audio signal is amplified to be exported to coil, is produced electric and magnetic oscillation, is pulled diaphragm production
Raw up and down motion is converted to sound.After a period of time, time control circuit connects and controls audio oscillator circuit to stop oscillation, nothing
Audio signal is exported, and power amplifier is stopped, and loudspeaker stop piping.
Present invention eliminates relay, loudspeaker assembly line construction is greatly simplified, metal material is saved, reduces into
This, and this contactless circuit makes loudspeaker in itself and its line work is more reliable, and fault rate is lower, and service life is longer.Adopt
With the electronic circuit of the present invention, make to be less than 30 μ A, therefore available conducting rubber button substituted metal by the electric current of button switch
Contact button, greatly extends the service life of button.The specially designed time control circuit of the present invention does not allow loudspeaker long
Time service, effectively protects loudspeaker to exempt from and burns.The electronic circuit of the present invention is also devised with overvoltage crowbar and waterproof is protected
Protection circuit, the protection to loudspeaker is more comprehensive, the product quality and technical performance of loudspeaker is greatly improved.
Brief description of the drawings
Fig. 1 is prior art arrangement schematic diagram；
Fig. 2 is schematic structural view of the invention；
Fig. 3 is principle of the invention block diagram；
Fig. 4 is circuit diagram of the present invention.
Embodiment
Referring to Fig. 3, Fig. 4, motor vehicle micro-current of the invention automatically controls contactless electron waterproof speaker, is opened by micro-current
Pass, time control circuit, audio oscillator circuit, power amplifier and loudspeaker are sequentially connected composition, micro-current switch control time
Control the on/off and working condition of circuit, audio oscillator circuit and power amplifier；The control of described time control circuit
Pole processed is also associated with overvoltage crowbar.
Above-mentioned micro-current switch is made up of triode and the button switch being connected on transistor base input circuit.
Above-mentioned button switch uses conducting rubber button.
Above-mentioned time control circuit is by transistor circuit and the RC being connected on transistor base delay charge-discharge circuit groups
Into.
Above-mentioned overvoltage crowbar is made up of the mu balanced circuit being connected in time control circuit base stage.
The resistance of resistive element is less than 15K in above-mentioned audio oscillator circuit, constitutes waterproofing protection circuit.
Referring to Fig. 4, circuit composition is as follows：
Micro-current is switched by R1、R2、R3、D1、T1、T2、C1Composition.Time control circuit and overvoltage crowbar are by R4、R5、
R6、R7、R10、D2、D3、C3Composition.Audio oscillator circuit is by R8、R9、C4、C5, IC composition.Power amplifier is by R11、T4、DLComposition.
First time, power filter was by R12、C6Composition.Power filter is by C after second of voltage stabilizing2Composition.R4It is to C3Discharge resistance.D6It is single
To it is conductive, prevent that current polarity is reversed when burn out circuit.D4、D5It is T1During conducting, while the control of 4 pin and high-power pipe to IC
System, is at ending working condition.
Circuit analysis and operation principle：
When outer button switch K is connected, T1Cut-off, R3、D1Mu balanced circuit is constituted through T2When emitter-base bandgap grading is exported, to time control electricity
Road and audio oscillation are powered.IC 4 pin are positive potential, and audio oscillator circuit works, and 3 pin output signals are through T4After amplification, output
Give coil DL, electric and magnetic oscillation is produced, pulls diaphragm to send sound.Frequency of oscillation is by R8、R9、C4Determine, C5It is anti-interference to use.
In T2While emitter-base bandgap grading output power supply, positive potential passes through R5To C3Charging, both end voltage gradually rises, and passes through one section
After time, C3Both end voltage is through R6Make T3Conducting, output negative potential, i.e. IC 4 pin are negative potential, and control IC stops oscillation, 3 pin
No signal exports T4Cut-off, loudspeaker stop pronunciation.
Under normal power voltage, D3In cut-off state, if voltage rise is reached when being higher by its voltage stabilizing value, D3Conducting, warp
R7Make T3Conducting output negative potential, IC 4 pin are negative potential, and IC stops oscillation, and T4 cut-offs, loudspeaker stop pronunciation.Thus protect
T4Damaged from high pressure.
When external button switch K disconnects, T1Conducting, T2Cut-off, has cut off the power supply of oscillating circuit, IC stops oscillation, T4
Cut-off, loudspeaker stop pronunciation.At the same time, T1The negative potential of output, through D4、D5To IC 4 pin and T4Also it is controlled, makes it
In cut-off state.
When external button switch K disconnects, C3Pass through D2、R4Rapid electric discharge, prepares to recharge when K is connected, to protect next time
The degree of accuracy of each time control.
The IC model NE555 of audio oscillator circuit of the present invention, can also be constituted with other model IC or discrete component, but institute
The resistance for having resistive element should be less than 15K, and this is to cause resistance to reduce to prevent the moist resistor coupled in parallel formed, make vibration
Frequency occurs big change and set.
Resistance R in time control circuit6Also it can be replaced with voltage-regulator diode.
Claims (5)
1. a kind of motor vehicle micro-current automatically controls contactless electron waterproof speaker, it is characterised in that switched by micro-current, the time
Control circuit, audio oscillator circuit, power amplifier and loudspeaker are sequentially connected composition, micro-current switch control time control electricity
The on/off and working condition on road, audio oscillator circuit and power amplifier；The control pole of described time control circuit is also
It is connected with overvoltage crowbar；
The motor vehicle micro-current, which automatically controls contactless electron waterproof speaker, also includes outer button switch, the micro-current switch
By R1、R2、R3、D1、T1、T2、C1Composition, when the outer button switch is connected, T1Cut-off, R3、D1Mu balanced circuit is constituted through T2Penetrate
Pole is exported, and the time control circuit and audio oscillation are powered；When the external button switch disconnects, T1Conducting, T2Cut
Only, power supply of the cut-out to the time control circuit and the oscillating circuit；
C1It is connected to the T1Penetrate between level and ground level, R2It is connected to the T1Ground level and described external button switch one end,
The outer button switch other end is connected to the T1Penetrate level.
2. motor vehicle micro-current according to claim 1 automatically controls contactless electron waterproof speaker, it is characterised in that institute
The button switch stated uses conducting rubber button.
3. motor vehicle micro-current according to claim 1 automatically controls contactless electron waterproof speaker, it is characterised in that institute
The time control circuit stated is made up of transistor circuit and the RC being connected on transistor base delay charge-discharge circuits.
4. motor vehicle micro-current according to claim 1 automatically controls contactless electron waterproof speaker, it is characterised in that institute
The overvoltage crowbar stated is made up of the mu balanced circuit being connected in time control circuit base stage.
5. motor vehicle micro-current according to claim 1 automatically controls contactless electron waterproof speaker, it is characterised in that institute
The resistance of resistive element is less than 15K in the audio oscillator circuit stated, and constitutes waterproofing protection circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310727609.4A CN103648074B (en) | 2013-12-26 | 2013-12-26 | Motor vehicle micro-current automatically controls contactless electron waterproof speaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310727609.4A CN103648074B (en) | 2013-12-26 | 2013-12-26 | Motor vehicle micro-current automatically controls contactless electron waterproof speaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103648074A CN103648074A (en) | 2014-03-19 |
| CN103648074B true CN103648074B (en) | 2017-08-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310727609.4A Active CN103648074B (en) | 2013-12-26 | 2013-12-26 | Motor vehicle micro-current automatically controls contactless electron waterproof speaker |
Country Status (1)
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2266181Y (en) * | 1996-08-15 | 1997-10-29 | 周灿煌 | Auto-controlled contactless electronic horn for motor-vehicle |
| CN2938668Y (en) * | 2006-08-07 | 2007-08-22 | 周灿煌 | Water-proof auto-control contactless electronic horn of motor-vehicle |
| CN203645813U (en) * | 2013-12-26 | 2014-06-11 | 周灿煌 | Micro-current automatic-control non-contact electronic waterproof horn of motor vehicle |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1132422A (en) * | 1995-03-25 | 1996-10-02 | 殷凤见 | Automotive multipurpose non-contact power switch |
-
2013
- 2013-12-26 CN CN201310727609.4A patent/CN103648074B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2266181Y (en) * | 1996-08-15 | 1997-10-29 | 周灿煌 | Auto-controlled contactless electronic horn for motor-vehicle |
| CN2938668Y (en) * | 2006-08-07 | 2007-08-22 | 周灿煌 | Water-proof auto-control contactless electronic horn of motor-vehicle |
| CN203645813U (en) * | 2013-12-26 | 2014-06-11 | 周灿煌 | Micro-current automatic-control non-contact electronic waterproof horn of motor vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103648074A (en) | 2014-03-19 |
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Effective date of registration: 20190816 Address after: 410500 Yuan Jiapu Town, Xiangyin County, Yueyang City, Hunan Province Patentee after: Hunan circumference Electric Appliance Science and Technology Co Ltd Address before: 410001 Three 303 Building, 635 Shaoshan South Road, Changsha City, Hunan Province Patentee before: Zhou Canhuang |