CN208111064U - Horn control circuit and automobile - Google Patents
Horn control circuit and automobile Download PDFInfo
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- CN208111064U CN208111064U CN201820556754.9U CN201820556754U CN208111064U CN 208111064 U CN208111064 U CN 208111064U CN 201820556754 U CN201820556754 U CN 201820556754U CN 208111064 U CN208111064 U CN 208111064U
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Abstract
The utility model discloses a kind of horn control circuit and automobiles, including main control module, sub-control module, power module and drive module；The control terminal of the output end connection drive module of main control module, the output end of control terminal auxiliary connection control module, the power end of test side auxiliary connection control module；The control terminal of the output end connection power module of drive module；Power module includes horn coil, the power end of the first end connection power module of horn coil, the control terminal of the second end connection power module of horn coil；Sub-control module includes switching tube and switch, the output end of the current input terminal auxiliary connection control module of the switching tube, the power end of the control terminal auxiliary connection control module of switching tube, the ground terminal that the current output terminal of switching tube passes through switch auxiliary connection control module.The utility model can save an electric horn breaker point unit, reduce cost, reduce control loop to reduce loudspeaker to the EMC of electronic component and interfere.
Description
Technical field
The utility model relates to electronic technology field more particularly to a kind of horn control circuits.
Background technique
Nowadays automobile industry flourishes, and loudspeaker are the audible signal(l)ing devices of automobile, in the driving process of automobile, drives
Member is as needed and regulation issues required acoustic signal, alerts pedestrian and causes other vehicles note that guaranteeing traffic safety, together
When be also used to urge pedestrian to walk and transmitting signal.
Car horn is high current appliance working part, and consumption electric current is larger, and when being directly controlled with button, button is easy to burn
Bad, in order to avoid horn button contact is burnt out by arc spark, the prior art couples a relay in the line, such as Fig. 1 institute
Show, when pressing steering wheel loudspeaker key, the coil in relay is powered, in Fig. 1 "-3 ends of the end VCC-4-steering wheel switch-ground "
Row inhales lower contact at circuit, and then connects 1 end and 2 ends, makes loudspeaker circuit communication, loudspeaker positive terminal obtain it is electric after, trumpet
Main circuit works, and circulating current in horn coil generates electromagnetic attraction, so that sounding is realized in the movement for controlling diaphragm；It is unclamping
When steering wheel loudspeaker key, coil losing electricity in relay, "-3 ends of the end VCC-4-steering wheel switch-ground " are not all right at circuit, touching
Point is not opened, then 1 end is not connected to 2 ends, and trumpet main circuit is not turned on, the obstructed overcurrent of horn coil, does not generate electromagnetism
Suction controls diaphragm not sounding.The electric current of relay power is low current, amplifying circuit electric current about 4A high current passes through increasing
The mode of relay is added to complete Small current control big current loop.
However, the present inventor, when implementing the utility model, the discovery prior art at least has the following disadvantages, main engine plants pair
It is also higher and higher in the control requirement of integral vehicle cost, for the whistle loudspeaker of vehicle standard configuration, the demand of naturally occurring drop originally,
In the scheme for using relay control loudspeaker on-off, correspondingly, integral vehicle cost also increases the cost of an electric horn breaker point unit；
Loudspeaker belong to the stronger electrical part of interference, are increase accordingly using circuit quantity after vehicle relay, to vehicle Electro Magnetic Compatibility
Interference increases.
Utility model content
Technical problem to be solved by the utility model is to provide a kind of horn control circuits, by not using loudspeaker
Relay reduces the cost of electric horn breaker point unit in vehicle, the circuit quantity of horn control circuit is reduced, to reduce loudspeaker to it
The EMC of its electronic component is interfered.
In order to solve the above-mentioned technical problem, the utility model proposes a kind of horn control circuit, including main control module,
Sub-control module, drive module and power module；
The power end of the main control module connects power supply, and the output end of the main control module connects the drive module
Control terminal, the ground terminal ground connection of the main control module, the control terminal of the main control module connects the sub-control module
Output end, the test side of the main control module connects the power end of the sub-control module；
The power end of the drive module connects power supply, and the ground terminal of the drive module is grounded, the drive module
Output end connects the control terminal of the power module；
The power end of the power module connects power supply, and the power module includes horn coil, the horn coil
First end connects the power end of the power module, and the second end of the horn coil connects the control terminal of the power module；
The ground terminal of the sub-control module is grounded, and the sub-control module includes switching tube and switch, the switching tube
Current input terminal connect the output end of the sub-control module, the control terminal of the switching tube connects the sub-control module
Power end, the current output terminal of the switching tube connect the ground terminal of the sub-control module by switch.
In one preferred embodiment, the switching tube is NPN type triode；
The base stage of the NPN type triode connects the power end of the sub-control module, the current collection of the NPN type triode
Pole connects the output end of the sub-control module, and the emitter of the NPN type triode connects the sub-control mould by switch
The ground terminal of block.
In another preferred embodiment, the switching tube is N-channel MOS pipe；
The source electrode of the N-channel MOS pipe connects the ground terminal of the sub-control module, the N channel MOS by switch
The grid of pipe connects the power end of the sub-control module, and the drain electrode of the N-channel MOS pipe connects the defeated of the sub-control module
Outlet.
Preferably, the main control module includes first resistor, second resistance, 3rd resistor, the 4th resistance, the 5th electricity
Resistance, the first NPN type triode, the second NPN type triode, third NPN type triode, first capacitor and the second capacitor；
The collector of first NPN type triode connects the power supply of the main control module by the first resistor
End, the emitter of first NPN type triode connect the emitter of the third NPN type triode, first NPN type three
The base stage of pole pipe connects the first end of the second resistance, and the collector of the first NPN type triode passes through first electricity
Hold the base stage for connecting second NPN type triode, the base stage of first NPN type triode passes through second capacitance connection
The collector of second NPN type triode；
The collector of second NPN type triode connects the test side of the main control module, second NPN type
The emitter of triode connects the base stage of the third NPN type triode, and the base stage of second NPN type triode passes through described
4th resistance connects the second end of the 3rd resistor；
The emitter of the third NPN type triode connects the ground terminal of the main control module, the third NPN type
The collector of triode connects the output end of the main control module；
The second end of the second resistance connects the power end of the main control module, and the second end of the second resistance connects
Connect the first end of the 3rd resistor；
The first end of the 3rd resistor connects the power end of the main control module；
5th resistance is connected between the power end of the main control module and the test side of the main control module.
It preferably, further include the 6th resistance and the 7th resistance；
6th resistance is connected between the second resistance second end and the power end of the main control module, described
7th resistance is connected between the both ends of the 6th resistance.
It preferably, further include the 8th resistance；
8th resistance is connected between the power supply and the power end of the main control module.
It in one preferred embodiment, further include first diode；
The anode of the first diode connects the ground terminal of the main control module, and the cathode of the first diode connects
Connect the ground terminal of the drive module.
In another preferred embodiment, the drive module includes the 9th resistance, the tenth resistance, the first positive-negative-positive
Triode and the 4th NPN type triode；
The base stage of first PNP type triode connects the power end of the drive module, institute by the 9th resistance
The base stage for stating the first PNP type triode connects the control terminal of the drive module, the emitter of the first PNP type triode
The power end of the drive module is connected by the tenth resistance, described in the collector connection of first PNP type triode
The base stage of 4th NPN type triode；
The emitter of 4th NPN type triode connects the ground terminal of the drive module, the 4th NPN type three
The collector of pole pipe connects the output end of the drive module.
Preferably, the power module further includes the second diode；
The anode of second diode connects the power end of the power module, the cathode connection of second diode
The first end of the horn coil.
To achieve the above object, the utility model embodiment additionally provides a kind of automobile, including car horn, the automobile
Loudspeaker include horn control circuit disclosed in any embodiment as described above.
Implement the utility model, following beneficial effect can be obtained：
Horn control circuit provided by the embodiment of the utility model controls main control by increasing a sub-control module
Module, and then realize the control to loudspeaker；Specifically, in sub-control module work when closing the switch of sub-control module
Make, detect main control module voltage be more than a threshold value when, then run main control circuit, by control main control circuit into
And drive module driving is controlled, drive module driving power module works, and the horn coil in power module is started to work, loudspeaker
It makes a sound.Using a sub-control circuit replace electric horn breaker point unit, realize control sound horn under avoid using loudspeaker after
Electric appliance, and then reduce the quantity in circuit in horn control circuit, it reduces loudspeaker and vehicle Electro Magnetic Compatibility is interfered.
Detailed description of the invention
Fig. 1 is a kind of circuit diagram of the horn control circuit of tape relay in the prior art；
Fig. 2 is the structural schematic diagram for the horn control circuit that the utility model one embodiment provides；
Fig. 3 is the circuit diagram for the horn control circuit that second embodiment of the utility model provides；
Fig. 4 is the circuit diagram that the switching tube that second embodiment of the utility model provides is NPN type triode；
Fig. 5 is the circuit diagram for the main control module that second embodiment of the utility model provides；
Fig. 6 is the circuit diagram for the drive module that second embodiment of the utility model provides；
Fig. 7 is the circuit diagram for the power module that second embodiment of the utility model provides.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts
Every other embodiment obtained, fall within the protection scope of the utility model.
In actual application, car horn is that the vibration of metallic membrane is leaned on to make a sound.Electric automobile horn is by iron core, magnetic
Property the composition such as coil, contact, armature and diaphragm.When driver presses horn switch button, electric current passes through coil, coil through contact
It generates magnetic force and inhales lower armature, force diaphragm mobile, armature movement disconnects contact, and current interruptions, coil magnetic force disappears, and diaphragm exists
It sets back together under natural resiliency and spring leaf effect with armature, contact closure circuit is again switched on, and electric current is flowed by contact
Magnetic force is generated through coil, repeats above-mentioned movement.The continuous vibration for recycling diaphragm repeatedly, to issue sound equipment.If directly
Loudspeaker are controlled with horn button, electric current can reach 15A or 20A or more when loudspeaker work, and high current soon burns horn button
It is bad, Small current control high current is realized usually using electric horn breaker point unit thus.But after increasing electric horn breaker point unit, loudspeaker
Circuit quantity in control circuit will increase, and loudspeaker, which will interfere vehicle Electro Magnetic Compatibility, to be increased.
Fig. 2 is referred to, is the horn control circuit structural schematic diagram that the utility model one embodiment provides.
Horn control circuit provided in this embodiment includes main control module 10, sub-control module 20,30 and of drive module
Power module 40；
The power end of the main control module 10 connects power supply 50, and the output end of the main control module 10 connects the drive
The control terminal of dynamic model block 30, the ground terminal ground connection of the main control module 10, the control terminal of the main control module 10 connect institute
The output end of sub-control module 20 is stated, the test side of the main control module 10 connects the power end of the sub-control module 20；
The power end of the drive module 30 connects power supply 50, the ground terminal ground connection of the drive module 30, the driving
The output end of module 30 connects the control terminal of the power module 40；
The power end of the power module 40 connects power supply 50, and the power module 40 includes horn coil L1, the loudspeaker
The first end of coil L1 connects the power end of the power module 40, and the second end of the horn coil L1 connects the power
The control terminal of module 40；
The ground terminal of the sub-control module 20 is grounded, and the sub-control module 20 includes switching tube and switch, described to open
The current input terminal for closing pipe connects the output end of the sub-control module 20, and the control terminal of the switching tube connects the sub-control
The power end of module 20, the current output terminal of the switching tube connect the ground terminal of the sub-control module 20 by switch.
In the present embodiment, the main control module 10 is for driving the drive module 30, the main control module 10
There are many topological structure is available, for generating self-oscillation, that is, two can be made by resistance-capacitance coupling using depth positive feedback
A electronic device alternate conduction and cut-off, so that self-excitation generates square wave output.In the present embodiment, it can be used two or more
Transistor, digital gate circuit, 555 timers composition and integrated gate circuit composition multivibrator generate self-oscillation in turn.
In the present embodiment, the drive module 30 is used to receive the control of the main control module 10, and then drives institute
State power module 40.There are many drive modules 30, and topological structure is available, for faint signal to be amplified to needs
Range value and with the consistent signal of original input signal changing rule, wherein the faint signal include variation voltage and electricity
The signals such as stream.The drive module 30 includes signal source, the amplifying circuit of transistor composition and load.In the present embodiment
In, it can be by common-collector amplifier, total radio amplifier, grounded base amplification circuit, common source amplifying circuit and altogether in leakage amplifying circuit
It is one or more be combined into transistor amplifier circuit so that complete driving power module 40 functions.
In the present embodiment, the power module 40 is used to receive the driving of the drive module 30, controls horn coil
The electric current of L1 and then the sounding for controlling loudspeaker.In the present embodiment, the horn coil L1 is during being powered with power-off, institute
The diaphragm stated in loudspeaker will vibration sounding.
In the present embodiment, the sub-control module 20 is used to detect the voltage of the main control module 10, in the master
When the voltage of control module 10 is higher than the start-up operation voltage of the control module 20, the control module 20 is turned on, in turn
The level of the control terminal of the main control module 10 is dragged down, to control the main control module 10.The sub-control module
Topological structure is available there are many 20, such as can choose as three ports for control such as triode, field-effect tube, IGBT, thyristors
Device or its derivation device.Wherein, the switch is preferably the control switch on steering wheel to loudspeaker.
The working principle of horn control circuit provided in this embodiment is as follows：
In the sub-control module 20 when closing the switch, the sub-control module 20 has accessed horn control circuit
In.When detecting that the voltage of the main control module 10 reaches the conducting voltage of the sub-control module 20, then the secondary control
Molding block 20 is connected, and controls the work of the main control module 10, and the output voltage of the main control module 10 is low electricity
Flat, the drive module 30 receives the low level, then the drive module 30 amplifies, and then drives the power mould
Block 40, the horn coil in the power module 40 flow into electric current.Because the self-oscillation in the main control module 10 acts on,
The voltage of test side constantly just changes in the main control module 10, detects the main control in the sub-control module 20
When the undertension of module 10 is to be connected the sub-control module 20, then the main control module output is high level, in institute
When stating drive module 30 and receiving the high level, the drive module 30 does not work, then the horn wire in the power module
There is no electric current to pass through in circle.Cutting in and out for the electric current in horn coil L1 is being controlled, the continuous vibration of diaphragm is being controlled, to send out
Sound equipment out.
Compared with the prior art, the beneficial effect of horn control circuit provided by the utility model is：
In sub-control module when closing the switch, the sub-control module has accessed horn control circuit, by using
Sub-control module detects main control module to realize the sounding of loudspeaker, electric horn breaker point unit is increased in vehicle so overcoming, loudspeaker
Circuit quantity in control circuit, which increases, causes loudspeaker to interfere increased technological deficiency to vehicle Electro Magnetic Compatibility, and then reaches
The cost for reducing electric horn breaker point unit, reduces the technical effect that loudspeaker interfere vehicle Electro Magnetic Compatibility.
Fig. 3 is referred to, is the circuit diagram for the horn control circuit that second embodiment of the utility model provides.
Horn control circuit provided in this embodiment on the basis of the above embodiments, has advanced optimized partial function electricity
The structure on road, it is specific as follows：
Further, the switching tube Q1 is NPN type triode；
Referring to fig. 4, Fig. 4 is that the circuit that the switching tube that second embodiment of the utility model provides is NPN type triode is former
Reason figure.Wherein, the end g connects the power end of the sub-control module 20, and the end f connects the output end of the sub-control module 20, the end h
End connects the ground terminal of the sub-control module 20.The base stage of the NPN type triode connects the power supply of the sub-control module
End, the collector of the NPN type triode connect the output end of the sub-control module, the emitter of the NPN type triode
The ground terminal of the sub-control module is connected by switch.
It should be noted that if the switching tube Q1 selects NPN type triode, then when detecting the main control module
When voltage is up to a threshold value, the voltage difference between the base stage and emitter of the NPN type triode can match the NPN type
The emitter junction conducting voltage of triode, therefore, the NPN type triode is accordingly connected.
In a kind of optional embodiment, the switching tube Q1 is N-channel MOS pipe；
The source electrode of the N-channel MOS pipe connects the ground terminal of the sub-control module 20, the N-channel MOS by switch
The grid of pipe connects the power end of the sub-control module 20, and the drain electrode of the N-channel MOS pipe connects the sub-control module
20 output end.
It should be noted that if the switching tube selects N-channel MOS pipe, then when the electricity for detecting the main control module
When pressure is up to a threshold value, the voltage difference between the grid and source electrode of the N-channel MOS pipe can match the N-channel MOS pipe
Conducting voltage, therefore, the N-channel MOS pipe is accordingly connected.
Further, the main control module 10 includes first resistor R1, second resistance R2,3rd resistor R3, the 4th electricity
Hinder R4, the 5th resistance R5, the first NPN type triode Q2, the second NPN type triode Q3, third NPN type triode Q4, the first electricity
Hold C1 and the second capacitor C2；
The collector of the first NPN type triode Q2 connects the main control module 10 by the first resistor R1
Power end, the emitter of the first NPN type triode Q2 connect the emitter of the third NPN type triode Q4, and described
The base stage of one NPN type triode Q2 connects the first end of the second resistance R2, the current collection of the first NPN type triode Q2
Pole connects the base stage of the second NPN type triode Q3, the base of the first NPN type triode Q2 by the first capacitor C1
Pole connects the collector of the second NPN type triode Q3 by the second capacitor C2；
The collector of the second NPN type triode Q3 connects the test side of the main control module 10, the 2nd NPN
The emitter of type triode Q3 connects the base stage of the third NPN type triode Q4, the base stage of the second NPN type triode Q3
The second end of the 3rd resistor R3 is connected by the 4th resistance R4；
The emitter of the third NPN type triode Q4 connects the ground terminal of the main control module 10, the 3rd NPN
The collector of type triode Q4 connects the output end of the main control module 10；
The second end of the second resistance R2 connects the power end of the main control module 10, and the of the second resistance R2
Two ends connect the first end of the 3rd resistor R3；
The first end of the 3rd resistor R3 connects the power end of the main control module 10；
The 5th resistance R5 is connected to the power end of the main control module 10 and the detection of the main control module 10
Between end.
In the present embodiment, the first resistor R1 in the main control module 10, the second resistance R2, described
Three resistance R3, the 4th resistance R4, the 5th resistance R5, the first NPN type triode Q2, second NPN type three
Pole pipe Q3, the third NPN type triode Q4, the first capacitor C1 and the second capacitor C2 constitute multivibrator.
Fig. 5 is participated in, Fig. 5 is the circuit diagram for the main control module that second embodiment of the utility model provides.Wherein, the end a connects
The power end of the main control module 10, the end b connect the test side of the main control module 10, and the end c connects the master control molding
The control terminal of block 10, the end d connect the output end of the main control module 10, and the end e connects the ground terminal of the main control module 10.
The working principle of the multivibrator：Since the fine difference of circuit parameter and positive feedback make first NPN type triode
One in Q2 and the second NPN type triode Q3 guarantee adequate food and it is another end by all means, there is a temporary stable state, described
One resistance R1, the second resistance R2, the 3rd resistor R3, the resistance value of the 4th resistance R4 and the 5th resistance R5 are poor
Under different, it is assumed that the first NPN type triode Q2 is first saturated, the second NPN type triode Q3 cut-off, supply voltage VCC.
Due to positive feedback, the first NPN type triode Q2 moment is saturated, the collector voltage on the first NPN type triode Q2
By+VCC mutation to close to zero, the anode of the first capacitor C1 makes also close to zero since the voltage on capacitor both sides cannot be mutated
Capacitor negative terminal be-VCC, and then force the base potential VB3 moment on the second NPN type triode Q3 drop to-
VCC, then the second NPN type triode Q3 reliably ends.The first capacitor C1 electric discharge, the second capacitor C2 charging.
When the base potential VB3 on the second NPN type triode Q3 is increased to conducting voltage as the first capacitor C1 discharges
When, the second NPN type triode Q3 is begun to turn on, and by positive feedback the first NPN type triode Q2 is ended, described
Second NPN type triode Q3 saturation.After the second NPN type triode Q3 saturation, the third NPN type triode Q4
Saturation, collector voltage on the 2nd NPN type triode Q3 are mutated by+VCC to close to zero, the second capacitor C2's
Anode is also close to zero, since the voltage on capacitor both sides cannot be mutated so that the negative terminal of capacitor is-VCC, and then forces described first
Base potential VB2 moment on NPN type triode Q2 drops to-VCC, and then the first NPN type triode Q3 is reliably cut
Only.The second capacitor C2 electric discharge, the first capacitor C1 charging.Base potential on the first NPN type triode Q2
When VB2 is increased to conducting voltage as the second capacitor C2 discharges, the first NPN type triode Q2 is begun to turn on, and is led to
Crossing positive feedback ends the second NPN type triode Q3, the first NPN type triode Q2 saturation.So constantly recycle
Back and forth, self-oscillation is just formed.Collector on the second NPN type triode Q3 also can constantly change, and then the pair
The voltage that control module 20 detects also constantly changes.
Further, the main control module 10 further includes the 6th resistance R6 and the 7th resistance R7；
The 6th resistance R6 be connected to the second resistance R2 second end and the main control module 10 power end it
Between, the 7th resistance R7 is connected between the both ends of the 6th resistance R6.
It further, further include the 8th resistance R8；
The 8th resistance R8 is connected between the power supply and the power end of the main control module 10.
It further, further include first diode Q7；
The anode of the first diode Q7 connects the ground terminal of the main control module 10, the first diode Q7's
Cathode connects the ground terminal of the drive module 30.
Further, the drive module 30 includes the 9th resistance R9, the tenth resistance R10, the first PNP type triode Q5
With the 4th NPN type triode Q6；
It is the circuit diagram for the drive module that second embodiment of the utility model provides referring to Fig. 6, Fig. 6.Wherein, institute
The power end that the end i connects the drive module 30 is stated, the end j connects the output end of the drive module 30, and the end k connects the driving
The ground terminal of module 30.The base stage of the first PNP type triode Q5 passes through the 9th resistance R9 connection drive module
The base stage of 30 power end, the first PNP type triode Q5 connects the control terminal of the drive module 30, the first PNP
The emitter of type triode Q5 connects the power end of the drive module 30, first positive-negative-positive by the tenth resistance R10
The collector of triode Q5 connects the base stage of the 4th NPN type triode Q6；
The emitter of the 4th NPN type triode Q6 connects the ground terminal of the drive module 30, the 4th NPN type
The collector of triode Q6 connects the output end of the drive module 30.
Further, the power module 40 further includes the second diode Q8；
It is the circuit diagram for the power module that second embodiment of the utility model provides referring to Fig. 7, Fig. 7.Wherein, l
End connects the power end of the power module 40, and the end m connects the control terminal of the power module 40.The second diode Q8's
Anode connects the power end of the power module 40, and the cathode of the second diode Q8 connects the of the horn coil L1
One end.
The working principle of horn control circuit is described so that switching tube Q1 is NPN type triode as an example：
When switch button in the sub-control module 20 is not pressed, the sub-control module 20 does not access electricity
Road, when the switch button in the sub-control module 20 is pressed, the sub-control module 20 accesses circuit.The switch
The base stage of pipe Q1 has accessed the test side in the main control module 10, that is, the current collection of the second NPN type triode Q3
The voltage on the collector is detected in pole, when the voltage reaches the conducting voltage of the switching tube Q1, the switching tube Q1
Conducting, the collector of the switching tube Q1 have accessed the control terminal in the main control module 10, that is, second NPN type
The base stage of triode Q3, in switching tube Q1 conducting, the emitter of the switching tube Q1 is grounded, then the switching tube Q1
The base voltage of the second NPN type triode Q3 is dragged down, then the base voltage of the second NPN type triode Q3 is not enough to
The second NPN type triode Q3 is connected, then the 2nd NPN type triode Q3 and the third NPN type triode Q4 are cut
Only, when the second NPN type triode Q3 and the third NPN type triode Q4 are ended, three pole of the first positive-negative-positive
The base stage of pipe Q5 connects power supply, and the base stage of the first PNP type triode Q5 is enough that the first PNP type triode Q5 is connected,
Then the first PNP type triode Q5 and the 4th NPN type triode Q6 to conducting, the current collection of the 4th NPN type triode Q6
Pole connects the horn coil L1 in the power module 40, the horn coil L1 energization.In the main control module 10, by
It can reduce, detect again after rising in the voltage in self-oscillatory principle, the collector of the second NPN type triode Q3
Voltage on the collector, when the voltage is lower than the conducting voltage of the switching tube Q1, the current collection of the switching tube Q1
The control terminal in the main control module 10 is accessed in pole, and the switching tube Q1 can not drag down the voltage of control terminal, then and described second
NPN type triode Q3 and third NPN type triode Q4 conducting, in the 2nd NPN type triode Q3 and the third
When NPN type triode Q4 is connected, the collector of the third NPN type triode Q4 has accessed the first PNP type triode Q5
Base stage, the base voltage of the first PNP type triode Q5 is not enough to be connected the first PNP type triode Q5, then described
First PNP type triode Q5 and the 4th NPN type triode Q6 are ended.The collector of the 4th NPN type triode Q6 connects
Horn coil in the power module 4, the horn coil no power.By controlling the electric current in the horn coil L1
It cuts in and out, and then controls the movement of diaphragm.
A kind of automobile provided by the embodiment of the utility model, including car horn, the car horn include any of the above-described
The horn control circuit that embodiment provides.Wherein, the specific structure of horn control circuit is referred to the correlation of above-described embodiment
Illustrate, details are not described herein again.
Compared with the prior art, the beneficial effect of horn control circuit provided by the utility model is：
In sub-control module when closing the switch, the sub-control module has accessed horn control circuit, the secondary control
The voltage in switching tube detection main control module in molding block, the self-oscillatory working principle based on main control module pass through
Drive module controls the on-off of electric current in the horn coil in power module, realizes control sound horn.So overcoming vehicle
In increase electric horn breaker point unit, the circuit quantity in horn control circuit increase cause loudspeaker to vehicle Electro Magnetic Compatibility interfere increase
The technological deficiency added, and then reached the cost for reducing electric horn breaker point unit, reduce what loudspeaker interfered vehicle Electro Magnetic Compatibility
Technical effect.
The above is preferred embodiments of the present invention, it is noted that for the ordinary skill of the art
For personnel, without departing from the principle of this utility model, several improvement and deformations can also be made, these improve and become
Shape is also considered as the protection scope of the utility model.
Claims (10)
1. a kind of horn control circuit, which is characterized in that including main control module, sub-control module, drive module and power mould
Block；
The power end of the main control module connects power supply, and the output end of the main control module connects the control of the drive module
End processed, the ground terminal ground connection of the main control module, the control terminal of the main control module connect the defeated of the sub-control module
Outlet, the test side of the main control module connect the power end of the sub-control module；
The power end of the drive module connects power supply, the ground terminal ground connection of the drive module, the output of the drive module
End connects the control terminal of the power module；
The power end of the power module connects power supply, and the power module includes horn coil, and the first of the horn coil
End connects the power end of the power module, and the second end of the horn coil connects the control terminal of the power module；
The ground terminal of the sub-control module is grounded, and the sub-control module includes switching tube and switch, the electricity of the switching tube
Stream input terminal connects the output end of the sub-control module, and the control terminal of the switching tube connects the power supply of the sub-control module
End, the current output terminal of the switching tube connect the ground terminal of the sub-control module by switch.
2. horn control circuit as described in claim 1, which is characterized in that the switching tube is NPN type triode；
The base stage of the NPN type triode connects the power end of the sub-control module, and the collector of the NPN type triode connects
The output end of the sub-control module is connect, the emitter of the NPN type triode connects the sub-control module by switch
Ground terminal.
3. horn control circuit as described in claim 1, which is characterized in that the switching tube is N-channel MOS pipe；
The source electrode of the N-channel MOS pipe connects the ground terminal of the sub-control module by switch, the N channel MOS tube
Grid connects the power end of the sub-control module, and the drain electrode of the N-channel MOS pipe connects the output of the sub-control module
End.
4. horn control circuit as described in any one of claims 1 to 3, which is characterized in that the main control module includes the
One resistance, second resistance, 3rd resistor, the 4th resistance, the 5th resistance, the first NPN type triode, the second NPN type triode,
Three NPN type triodes, first capacitor and the second capacitor；
The collector of first NPN type triode connects the power end of the main control module, institute by the first resistor
The emitter for stating the first NPN type triode connects the emitter of the third NPN type triode, first NPN type triode
Base stage connect the first end of the second resistance, the collector of first NPN type triode is connected by the first capacitor
The base stage of second NPN type triode is connect, the base stage of first NPN type triode passes through described in second capacitance connection
The collector of second NPN type triode；
The collector of second NPN type triode connects the test side of the main control module, second NPN type triode
Emitter connect the base stage of the third NPN type triode, the base stage of second NPN type triode passes through the 4th electricity
Resistance connects the second end of the 3rd resistor；
The emitter of the third NPN type triode connects the ground terminal of the main control module, the third NPN type triode
Collector connect the output end of the main control module；
The second end of the second resistance connects the power end of the main control module, and the second end of the second resistance connects institute
State the first end of 3rd resistor；
The first end of the 3rd resistor connects the power end of the main control module；
5th resistance is connected between the power end of the main control module and the test side of the main control module.
5. horn control circuit as claimed in claim 4, which is characterized in that further include the 6th resistance and the 7th resistance；
6th resistance is connected between the second resistance second end and the power end of the main control module, and the described 7th
Resistance is connected between the both ends of the 6th resistance.
6. horn control circuit as described in any one of claims 1 to 3, which is characterized in that further include the 8th resistance；
8th resistance is connected between the power supply and the power end of the main control module.
7. horn control circuit as described in any one of claims 1 to 3, which is characterized in that further include first diode；
The anode of the first diode connects the ground terminal of the main control module, and the cathode of the first diode connects institute
State the ground terminal of drive module.
8. horn control circuit as described in any one of claims 1 to 3, which is characterized in that the drive module includes the 9th
Resistance, the tenth resistance, the first PNP type triode and the 4th NPN type triode；
The base stage of first PNP type triode connects the power end of the drive module by the 9th resistance, and described
The base stage of one PNP type triode connects the control terminal of the drive module, and the emitter of first PNP type triode passes through institute
The power end that the tenth resistance connects the drive module is stated, the collector of first PNP type triode connects the 4th NPN
The base stage of type triode；
The emitter of 4th NPN type triode connects the ground terminal of the drive module, the 4th NPN type triode
Collector connects the output end of the drive module.
9. horn control circuit as described in any one of claims 1 to 3, which is characterized in that the power module further includes
Two diodes；
The anode of second diode connects the power end of the power module, described in the cathode connection of second diode
The first end of horn coil.
10. a kind of automobile, which is characterized in that including car horn, the car horn includes as described in claim 1 to 9
Horn control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820556754.9U CN208111064U (en) | 2018-04-17 | 2018-04-17 | Horn control circuit and automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820556754.9U CN208111064U (en) | 2018-04-17 | 2018-04-17 | Horn control circuit and automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208111064U true CN208111064U (en) | 2018-11-16 |
Family
ID=64119021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820556754.9U Active CN208111064U (en) | 2018-04-17 | 2018-04-17 | Horn control circuit and automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208111064U (en) |
-
2018
- 2018-04-17 CN CN201820556754.9U patent/CN208111064U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 511434, No. 633, Jinshan Avenue East Road, Guangzhou, Guangdong, Panyu District Patentee after: Guangzhou Automobile Passenger Car Co.,Ltd. Address before: 511434, No. 633, Jinshan Avenue East Road, Guangzhou, Guangdong, Panyu District Patentee before: GUANGZHOU AUTOMOBILE GROUP MOTOR Co.,Ltd. |
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| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: No. 633, Jinshan Avenue East Road, Guangzhou, Guangdong, Panyu District Patentee after: Guangzhou Automobile Group Co.,Ltd. Country or region after: China Address before: No. 633, Jinshan Avenue East Road, Guangzhou, Guangdong, Panyu District Patentee before: Guangzhou Automobile Passenger Car Co.,Ltd. Country or region before: China |