CN205610746U - On -vehicle stereo set that possesses automatic control and wireless conversation function - Google Patents
On -vehicle stereo set that possesses automatic control and wireless conversation function Download PDFInfo
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- CN205610746U CN205610746U CN201620310998.XU CN201620310998U CN205610746U CN 205610746 U CN205610746 U CN 205610746U CN 201620310998 U CN201620310998 U CN 201620310998U CN 205610746 U CN205610746 U CN 205610746U
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Abstract
The utility model provides an on -vehicle stereo set that possesses automatic control and wireless conversation function, include: MCU controller, bluetooth circuit, microphone detection circuitry, MCU clock crystal oscillator, MCU controller bluetooth connected signal bluetooth circuit signal end, bluetooth circuit microphone connected signal microphone detect circuit signal end, MCU controller crystal oscillator connected signal MCU clock crystal oscillator signal end. This circuit satisfies the demand of specific on -vehicle stereo set, under the voltage of difference, can accurate realization vibration or failure of oscillations, realize connecing the function of making a phone call through the bluetooth circuit moreover, need not user's cell -phone of taking, strengthened driving safety nature to above -mentioned circuit design is reasonable, and the operation is stable.
Description
Technical field
The present invention relates to vehicle audio electronic circuit field, particularly relate to one and possess and automatically control and channel radio
The vehicle audio of words function.
Background technology
In prior art, society automobile is more and more universal, and for a user, automobile not only becomes generation
Step instrument, is also the consumer product of a kind of personalization, brings so automobile factory commercial city adds vehicle audio
Preferably Consumer's Experience, but the vehicle audio of prior art can not be synchronize with external clock, and vehicle-mounted sound
The clock oscillation ringing self is the most inaccurate, although but there are some sound equipments to have crystal oscillator circuit design unreasonable, fortune
Row instability.After user connects intelligent terminal by Bluetooth circuit, vehicle mounted microphone can not be known and whether may be used
With or normally work.This just needs those skilled in the art badly and solves corresponding technical problem.
Summary of the invention
It is contemplated that at least solve technical problem present in prior art, the most innovatively propose one
Possess and automatically control and the vehicle audio of wireless communication function.
In order to realize the above-mentioned purpose of the present invention, the invention provides one and possess and automatically control and wireless communication
The vehicle audio of function, including: MCU controller, Bluetooth circuit, microphone testing circuit, MCU clock
Crystal oscillator；
MCU controller Bluetooth signal end connects Bluetooth circuit signal end, and Bluetooth circuit microphone signal end connects
Microphone testing circuit signal end, MCU controller crystal oscillation signal end connects MCU clock crystal oscillator signal end.
Technique scheme have the beneficial effect that this circuit meets the demand of specific vehicle audio, different
Under voltage, it is possible to accurately realize vibration or stop oscillation, and realize taking phone merit by Bluetooth circuit
Can, it is not necessary to user takes mobile phone, enhances drive safety, and foregoing circuit is reasonable in design, run steady
Fixed.
Described possessing automatically controls and the vehicle audio of wireless communication function, it is preferred that described microphone detects
Circuit includes:
The detection of MCU controller microphone controls end and connects the 54th field effect transistor colelctor electrode and the 96th resistance respectively
One end, the 96th resistance other end connects 3.3V power end, and the 54th field effect transistor base stage connects the 107th respectively
Resistance one end and the 235th electric capacity one end, the 235th electric capacity other end connects the 54th field effect transistor respectively and launches
Pole and ground connection, the 107th resistance other end connects Bluetooth circuit microphone signal end.
Technique scheme have the beneficial effect that this circuit realiration microphone identification function, in mike or words
The non-access state of cylinder, keeps low-power consumption by MCU, after treating that mike accesses, whether identifies mike
Normal insertion, thus be that vehicle-mounted middle control is saved energy and reduce the cost, this circuit is rationally distributed, stable.
Described possessing automatically controls and the vehicle audio of wireless communication function, it is preferred that described Bluetooth circuit
Including:
Antenna one end the 231st electric capacity in parallel, then connects Bluetooth chip antenna signal interaction end, Bluetooth chip
Microphone signal end connection the 18th electric capacity one end, the 18th electric capacity other end connection the 30th resistance one end, the 30th
The resistance other end connects the 107th resistance other end, and the 18th electric capacity other end is also connected with the 28th resistance one end,
28th resistance other end ground connection, Bluetooth chip microphone signal end is also connected with the 19th electric capacity one end, the 19th electricity
Hold the other end and connect the 29th resistance one end and the 33rd resistance one end respectively, the 29th resistance other end ground connection,
The 33rd resistance other end connects the 186th resistance one end, and the 186th resistance other end connects 8V power supply, blue
Tooth chip data reads end and connects the 25th resistance one end, and the 25th resistance other end connects the 36th resistance respectively
One end and data bus terminal, the 36th resistance other end connects 3.3V power supply, and Bluetooth chip data sending terminal is even
Connecing the 26th resistance one end, the 26th resistance other end connects data bus terminal.
The access shape having the beneficial effect that by Bluetooth circuit identification mike or microphone of technique scheme
State, transfers data to MCU and judges, makes user realize taking call without taking cell phone
Function.
Described possessing automatically controls and the vehicle audio of wireless communication function, it is preferred that during described MCU
Clock crystal oscillator includes:
5th electric capacity one end connects the 1st diode cathode and the 2nd diode cathode respectively, and the 1st diode is just
Pole connecting sound equipment power button, the 2nd diode cathode connection MCU controller crystal oscillator control end, the 2nd two
Pole pipe negative pole is also connected with the 1st field effect transistor base stage, and the 1st field effect transistor base stage is also connected with the 4th resistance one end,
The 4th resistance other end connects the 3rd diode cathode, and the 3rd diode cathode connects automobile ACC signal,
MCU controller power supply end connects the 5th resistance one end, and the 5th resistance other end connects the 1st field effect
Pipe collector, the 1st field effect transistor colelctor electrode is also connected with oikocryst and shakes chip Enable Pin, and the oikocryst chip data that shakes is defeated
Entering end and connect the 6th inductance one end and the 2nd electric capacity one end respectively, the 6th inductance other end connects the 4th electric capacity one
End, the 4th electric capacity other end ground connection, the 2nd electric capacity other end ground connection, oikocryst shakes control chip data input pin
Being also connected with passive crystal oscillator one end, the passive crystal oscillator other end connects the 2nd resistance one end and the 7th electric capacity one end respectively,
7th electric capacity other end ground connection, the 2nd resistance other end connects oikocryst and shakes chip data outfan, and oikocryst shakes core
Sheet feeder ear connects the 13rd inductance one end and the 1st electric capacity one end respectively, and the 13rd inductance other end connects power supply
Power end, the 1st electric capacity other end ground connection.
Technique scheme have the beneficial effect that this circuit meets the demand of specific vehicle audio, different
Under voltage, it is possible to accurately realize vibration or stop oscillation, and circuit design is reasonable, stable.
Described possessing automatically controls and the vehicle audio of wireless communication function, it is preferred that also include reversing electricity
Road: MCU controller astern signal end connects reversing circuit astern signal end of probe；
Described reversing circuit includes: the 72nd resistance one end connects astern signal end, and the 72nd resistance other end divides
Not Lian Jie the 53rd resistance one end and the 41st diode cathode, the 53rd resistance other end ground connection, the 41st 2 pole
Pipe plus earth, the 41st diode cathode is also connected with the 70th resistance one end, and the 70th resistance other end is respectively
Connect the 99th electric capacity one end and the 71st resistance one end, the 99th electric capacity other end ground connection, the 71st resistance another
End ground connection, the 71st resistance one end is also connected with MCU controller astern signal end.
Reversing information Real-time Feedback can be arrived by having the beneficial effect that of technique scheme by reversing circuit
MCU controller, MCU carries out respective handling, and this circuit design is reasonable.
Described possessing automatically controls and the vehicle audio of wireless communication function, it is preferred that also include that front truck is big
Circuit for lamp: MCU controller front truck headlight signal end connects front truck headlight circuit light signal end of probe；
Described front truck headlight circuit includes: front truck headlight signal end connects the 56th resistance one end, the 56th resistance
The other end connects the 119th resistance one end and the 6th diode cathode respectively, the 119th resistance other end ground connection,
6th diode cathode ground connection, the 6th diode cathode is also connected with the 54th resistance one end, the 54th resistance another
End connection the 62nd electric capacity one end and the 31st resistance one end respectively, the 62nd electric capacity other end ground connection, the 31st
Resistance other end ground connection, the 31st resistance one end is also connected with the 52nd audion grid, the 52nd audion source electrode
Ground connection, the 52nd audion drain electrode connects the 10th resistance one end and the 11st resistance one end, the 11st resistance respectively
The other end connects power supply end, and the 10th resistance other end connects the 232nd electric capacity one end and MCU respectively
Controller front truck headlight acquisition of signal end, the 232nd electric capacity other end connection the 52nd audion source electrode, the 52nd
Audion grid is also respectively connected with the 13rd resistance one end and the 14th resistance one end, and the 13rd resistance other end is even
Connecing MCU controller front truck headlight PWM modulation signal end, the 14th resistance other end connects MCU and controls
Device front truck headlight acquisition of signal end.
Having the beneficial effect that of technique scheme can be by headlight information Real-time Feedback by front truck headlight circuit
To MCU controller, MCU carries out respective handling, and this circuit design is reasonable.
Described possessing automatically controls and the vehicle audio of wireless communication function, it is preferred that also include system electricity
Source switching circuit；MCU controller system power switch signal end connection system power switch circuit MCU
Switching signal end, system power switch Circuits System power end connection system power switch end, system power supply is opened
Close circuit power supply end and connect circuit power supply end；
Described system power switch circuit includes: the 5th field effect transistor base stage connects MCU controller system electricity
Source switch signal end, the 5th field effect transistor grounded emitter, the 5th field effect transistor colelctor electrode connects the 66th electricity
Resistance one end, the 66th resistance other end connects the 91st resistance one end and the 2nd field effect transistor base stage respectively, the
The 91 resistance other ends connect the 2nd field effect transistor emitter stage and the 79th electric capacity one end respectively, and the 79th electric capacity is another
One end ground connection, the 2nd field effect transistor emitter stage is also connected with circuit power supply end, the 2nd field effect transistor colelctor electrode
Connect the 68th resistance one end and the 85th electric capacity one end, the 68th resistance other end ground connection, the 85th electric capacity respectively
Other end ground connection, the 85th electric capacity one end is also respectively connected with the 84th electric capacity one end and system power supply switch terminals, the
84 electric capacity other end ground connection.
The having the beneficial effect that system power switch plays and control vehicle-mounted middle control power supply start and stop of technique scheme
Effect, it is ensured that the normally-open and shutoff of system, energy-saving and cost-reducing, power supply output is stable.
Described possessing automatically controls and the vehicle audio of wireless communication function, it is preferred that also include MCU
Reset circuit；MCU reset circuit signal end connects MCU controller and resets end, MCU reset circuit electricity
Source controls end and connects circuit power end；
Described MCU reset circuit includes: MCU controller reset end connect respectively the 73rd electric capacity one end and
Resetting chip and reset end, the 73rd electric capacity other end ground connection, MCU controller resets end and is also connected with the 58th electricity
Resistance one end, the 58th resistance other end connects MCU controller power source signal end, resets chip power end and divides
Not Lian Jie the 72nd electric capacity one end and power supply feeder ear, the 72nd electric capacity other end ground connection.
Technique scheme have the beneficial effect that by reset circuit ensure that vehicle-mounted middle control occur the machine of delaying or
During person's abnormality, again refreshing, circuit design is reasonable.
Described possessing automatically controls and the vehicle audio of wireless communication function, it is preferred that also include memorizer；
MCU controller store clock signal end connects memory clock signal end, MCU controller data outfan
Connecting memory data input, memory power end connects power supply end；
Described memorizer includes: power supply end connects the 9th electric capacity one end and the 8th electric capacity one end respectively, the
9 electric capacity other end ground connection, the 8th electric capacity other end ground connection, power supply end is also connected with storage chip power end
Communicate holding end with storage, and the 12nd resistance one end connects power supply end, and the 12nd resistance other end connects to be deposited
Storage chip write-protect end, the 9th resistance one end connects the 12nd resistance one end, and the 9th resistance other end connects respectively
The chip connecing storage chip selects end and MCU controller chip to select end, and MCU controller data inputs
End connects storage chip data output end.
Having the beneficial effect that of technique scheme stores relevant control parameter by memorizer, passes through MCU
Call at any time and store.
In sum, owing to have employed technique scheme, the invention has the beneficial effects as follows:
This circuit meets the demand of specific vehicle audio, under different voltage, it is possible to accurately realize vibration or
Person stops oscillation, and realizes taking telephony feature by Bluetooth circuit, it is not necessary to user takes mobile phone, strengthens
Drive safety, and foregoing circuit is reasonable in design, stable.
The additional aspect of the present invention and advantage will part be given in the following description, and part will be retouched from following
Become obvious in stating, or recognized by the practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or the additional aspect of the present invention and advantage are from combining the accompanying drawings below description to embodiment
Will be apparent from easy to understand, wherein:
Fig. 1 is general illustration of the present invention；
Fig. 2 is that the present invention moves backward circuit diagram；
Fig. 3 is firing circuit schematic diagram of the present invention；
Fig. 4 is front truck headlight circuit schematic diagram of the present invention；
Fig. 5 is present system on and off switch schematic diagram；
Fig. 6 is MCU power supply circuits schematic diagram of the present invention；
Fig. 7 is cell-monitoring circuit schematic diagram of the present invention；
Fig. 8 is MCU reset circuit schematic diagram of the present invention；
Fig. 9 is the vehicle-mounted middle control keystroke interface schematic diagram of the present invention；
Figure 10 is AccessPort circuit diagram of the present invention；
Figure 11 is memorizer schematic diagram of the present invention；
Figure 12 is MCU clock crystal oscillator schematic diagram of the present invention；
Figure 13 is RTC timer schematic diagram of the present invention；
Figure 14 is circuit diagram on the left of MCU controller of the present invention；
Figure 15 is MCU controller underside circuits schematic diagram of the present invention；
Figure 16 is circuit diagram on the right side of MCU controller of the present invention；
Figure 17 is circuit diagram on the upside of MCU controller of the present invention；
Figure 18 is bluetooth power supply circuits schematic diagram of the present invention；
Figure 19 is inventive microphone testing circuit schematic diagram；
Figure 20 is Bluetooth circuit schematic diagram of the present invention.
Detailed description of the invention
Embodiments of the invention are described below in detail, and the example of described embodiment is shown in the drawings, wherein certainly
Begin to same or similar label eventually represent same or similar element or there is the unit of same or like function
Part.The embodiment described below with reference to accompanying drawing is exemplary, is only used for explaining the present invention, and can not
It is interpreted as limitation of the present invention.
In describing the invention, it is to be understood that term " longitudinally ", " laterally ", " on ", D score, " front ",
The orientation of the instruction such as " afterwards ", "left", "right", " vertically ", " level ", " top ", " end " " interior ", " outward " or position
Relation of putting, for based on orientation shown in the drawings or position relationship, is for only for ease of the description present invention and simplification is retouched
State rather than indicate or imply that the device of indication or element must have specific orientation, with specific orientation
Structure and operation, be therefore not considered as limiting the invention.
In describing the invention, unless otherwise prescribed and limit, it should be noted that term " is installed ",
" be connected ", " connection " should be interpreted broadly, for example, it may be mechanically connected or electrical connection, it is also possible to be two
The connection of individual element internal, can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, for this
For the those of ordinary skill in field, the concrete meaning of above-mentioned term can be understood as the case may be.
As it is shown in figure 1, the invention provides a kind of vehicle-mounted sound possessing and automatically controlling with wireless communication function
Ring, it is characterised in that including: MCU controller, Bluetooth circuit, microphone testing circuit, MCU clock
Crystal oscillator；
MCU controller Bluetooth signal end connects Bluetooth circuit signal end, and Bluetooth circuit microphone signal end connects
Microphone testing circuit signal end, MCU controller crystal oscillation signal end connects MCU clock crystal oscillator signal end.
Technique scheme have the beneficial effect that this circuit meets the demand of specific vehicle audio, different
Under voltage, it is possible to accurately realize vibration or stop oscillation, and realize taking phone merit by Bluetooth circuit
Can, it is not necessary to user takes mobile phone, enhances drive safety, and foregoing circuit is reasonable in design, run steady
Fixed.
As it is shown on figure 3, automobile sparking start end connects the 55th resistance one end, the 55th resistance other end is respectively
Connecting the 57th resistance one end and the 8th diode cathode, the 57th resistance other end ground connection, the 8th diode is just
Pole ground connection, the 8th diode cathode is also connected with the 32nd resistance one end, and the 32nd resistance other end connects respectively
70 electric capacity one end and the 67th resistance one end, the 70th electric capacity other end ground connection, the 67th resistance other end ground connection,
67th resistance one end is also connected with MCU and controls sparking startup end of probe.
As shown in Figure 6, MCU power supply circuits include: power supply end connect respectively the 83rd electric capacity one end and
14th inductance one end, the 83rd electric capacity other end ground connection, the 14th inductance other end connects the 94th electric capacity respectively
One end, the 88th electric capacity one end, the 90th electric capacity one end, the 91st electric capacity one end, the 97th electric capacity one end,
98 electric capacity one end, the 94th electric capacity other end, the 88th electric capacity other end, the 90th electric capacity other end, the 91st
The electric capacity other end, the 97th electric capacity other end, the 98th electric capacity other end respectively ground connection, the 98th electric capacity another
End is also connected with MCU feeder ear.
As it is shown in fig. 7, cell-monitoring circuit includes: the 7th diode cathode ground connection, the 7th diode cathode
Connect power end, the 7th diode three-terminal link the 78th electric capacity one end and MCU controller battery detection
End, the 78th electric capacity other end ground connection, the 78th electric capacity one end is also respectively connected with the 65th resistance one end and the 64th
Resistance one end, the 65th resistance other end ground connection, the 64th resistance other end connects power end.
As it is shown in figure 9, vehicle-mounted middle control keystroke interface includes: controlled by bonded keystroke interface by LED
LED controls end, and power supply controls by bonded keystroke interface power control terminal, resets control key and connects button
Interface resets and controls end, and wherein keystroke interface is preferably 9850B-30Y917.
As described in Figure 10, AccessPort circuit includes: MCU controller is passed by RS232 bus
Defeated, power end connects the 93rd resistance one end, and the 93rd resistance other end connects AccessPort interface modes end,
Output end of main connects 90 resistance one end, ground, and the 90th resistance other end connects the input of AccessPort interface bus
End.
As shown in figure 13, RTC timer includes: the 76th electric capacity one end connects the 60th resistance one end respectively
With crystal oscillator one end, crystal oscillator one end is also connected with MCU controller RTC timing signal outfan, crystal oscillator another
End connects MCU controller RTC timing signal input, and the crystal oscillator other end is also respectively connected with the 60th resistance
The other end and the 77th electric capacity one end, the 77th electric capacity other end ground connection.
As shown in Figure 14,15,16,17, its MCU controller circuitry schematic diagram, IC chip (nFore2301)
Connect MCU controller IC and control end, carry out data interaction by IC chip and vehicle-mounted middle control miscellaneous equipment,
Decoding chip (TMC56D) connects MCU controller decoding end, MCU controller light by serial ports
Display end connects LED display lamp, and described MCU controller usb data interaction end passes through USB chip
(TS3DS10224) connect USB interface, MCU controller by IIC2 interaction end connect speaker and
Tuning radio (TEF6635), speaker carries out power amplification by power amplifier chips (TDA8595).
As shown in figure 18, bluetooth power supply circuits include: battery supply end connect respectively the 121st electric capacity one end,
122nd electric capacity one end, the 13rd electric capacity one end, the 20th electric capacity one end, the 14th electric capacity one end, the 24th
Electric capacity one end, the described 121st electric capacity other end, the 122nd electric capacity other end, the 13rd electric capacity other end,
The 20th electric capacity other end, the 14th electric capacity other end, the 24th electric capacity other end ground connection respectively, the described 121st
Electric capacity one end is also connected with the 10th inductance one end, and the 10th inductance other end connects the 10th electric capacity one end, and the 10th
Electric capacity other end ground connection, the 10th electric capacity one end is also respectively connected with the 17th electric capacity one end and power output end, the
17 electric capacity other end ground connection.
As shown in figure 19, described possess automatically control and the vehicle audio of wireless communication function, it is preferred that
Described microphone testing circuit includes:
The detection of MCU controller microphone controls end and connects the 54th field effect transistor colelctor electrode and the 96th resistance respectively
One end, the 96th resistance other end connects 3.3V power end, and the 54th field effect transistor base stage connects the 107th respectively
Resistance one end and the 235th electric capacity one end, the 235th electric capacity other end connects the 54th field effect transistor respectively and launches
Pole and ground connection, the 107th resistance other end connects Bluetooth circuit microphone signal end.
Technique scheme have the beneficial effect that this circuit realiration microphone identification function, in mike or words
The non-access state of cylinder, keeps low-power consumption by MCU, after treating that mike accesses, whether identifies mike
Normal insertion, thus be that vehicle-mounted middle control is saved energy and reduce the cost, this circuit is rationally distributed, stable.
When there being mike to plug, Q54 turns on, and it is low level that the detection of MCU controller mike controls end,
When MCU detects this low level, then judge that mike is plugged；When not plugging mike, Q54
Cut-off, it is high level that the detection of MCU controller mike controls end, when MCU detects this high level,
Then judge that mike is not plugged.
As shown in figure 20, described possess automatically control and the vehicle audio of wireless communication function, it is preferred that
Described Bluetooth circuit includes:
Antenna one end the 231st electric capacity in parallel, then connects Bluetooth chip antenna signal interaction end, Bluetooth chip
Microphone signal end connection the 18th electric capacity one end, the 18th electric capacity other end connection the 30th resistance one end, the 30th
The resistance other end connects the 107th resistance other end, and the 18th electric capacity other end is also connected with the 28th resistance one end,
28th resistance other end ground connection, Bluetooth chip microphone signal end is also connected with the 19th electric capacity one end, the 19th electricity
Hold the other end and connect the 29th resistance one end and the 33rd resistance one end respectively, the 29th resistance other end ground connection,
The 33rd resistance other end connects the 186th resistance one end, and the 186th resistance other end connects 8V power supply, blue
Tooth chip data reads end and connects the 25th resistance one end, and the 25th resistance other end connects the 36th resistance respectively
One end and data bus terminal, the 36th resistance other end connects 3.3V power supply, and Bluetooth chip data sending terminal is even
Connecing the 26th resistance one end, the 26th resistance other end connects data bus terminal.
The access shape having the beneficial effect that by Bluetooth circuit identification mike or microphone of technique scheme
State, transfers data to MCU and judges, makes user realize taking call without taking cell phone
Function.
As shown in figure 12, described possess automatically control and the vehicle audio of wireless communication function, it is preferred that
Described MCU clock crystal oscillator includes:
5th electric capacity one end connects the 1st diode cathode and the 2nd diode cathode respectively, and the 1st diode is just
Pole connecting sound equipment power button, the 2nd diode cathode connection MCU controller crystal oscillator control end, the 2nd two
Pole pipe negative pole is also connected with the 1st field effect transistor base stage, and the 1st field effect transistor base stage is also connected with the 4th resistance one end,
The 4th resistance other end connects the 3rd diode cathode, and the 3rd diode cathode connects automobile ACC signal,
MCU controller power supply end connects the 5th resistance one end, and the 5th resistance other end connects the 1st field effect
Pipe collector, the 1st field effect transistor colelctor electrode is also connected with oikocryst and shakes chip Enable Pin, and the oikocryst chip data that shakes is defeated
Entering end and connect the 6th inductance one end and the 2nd electric capacity one end respectively, the 6th inductance other end connects the 4th electric capacity one
End, the 4th electric capacity other end ground connection, the 2nd electric capacity other end ground connection, oikocryst shakes control chip data input pin
Being also connected with passive crystal oscillator one end, the passive crystal oscillator other end connects the 2nd resistance one end and the 7th electric capacity one end respectively,
7th electric capacity other end ground connection, the 2nd resistance other end connects oikocryst and shakes chip data outfan, and oikocryst shakes core
Sheet feeder ear connects the 13rd inductance one end and the 1st electric capacity one end respectively, and the 13rd inductance other end connects power supply
Power end, the 1st electric capacity other end ground connection.
When sound equipment is in holding state, user presses power key, and D1 turns on, and Q1 turns on, the EN of U2
Foot is low level, crystal oscillator starting of oscillation, provides stable running clock for MCU.
When sound equipment is in holding state, automobile is plugged key and opens ACC, and D3 turns on, and Q1 turns on,
The EN foot of U2 is low level, crystal oscillator starting of oscillation, provides stable running clock for MCU.
When sound equipment is in normal operating conditions, MCU controller crystal oscillator controls end output high level, and D2 turns on,
Q1 turns on, and the EN foot of U2 is low level, crystal oscillator persistent oscillation, when automobile cuts out ACC or automobile electricity
When cell voltage is too low, MCU initially enters standby mode, owing to MCU controller crystal oscillator controls end output
High level, it is ensured that during entering low-power consumption, the vibration of crystal oscillator is stable, when MCU enters low
After power consumption, MCU controller crystal oscillator controls end output low level, and D2 ends, and sound equipment power key is not pressed,
D1 ends, and ACC closes, and D3 ends, so Q1 cut-off, the EN foot of U2 is high level, crystal oscillator
Stop oscillation.
Technique scheme have the beneficial effect that this circuit meets the demand of specific vehicle audio, different
Under voltage, it is possible to accurately realize vibration or stop oscillation, and circuit design is reasonable, stable.
As in figure 2 it is shown, described possessing automatically controls and the vehicle audio of wireless communication function, it is preferred that
Also include circuit of moveing backward: MCU controller astern signal end connects reversing circuit astern signal end of probe；
Described reversing circuit includes: the 72nd resistance one end connects astern signal end, and the 72nd resistance other end divides
Not Lian Jie the 53rd resistance one end and the 41st diode cathode, the 53rd resistance other end ground connection, the 41st 2 pole
Pipe plus earth, the 41st diode cathode is also connected with the 70th resistance one end, and the 70th resistance other end is respectively
Connect the 99th electric capacity one end and the 71st resistance one end, the 99th electric capacity other end ground connection, the 71st resistance another
End ground connection, the 71st resistance one end is also connected with MCU controller astern signal end.
Reversing information Real-time Feedback can be arrived by having the beneficial effect that of technique scheme by reversing circuit
MCU controller, MCU carries out respective handling, and this circuit design is reasonable.
As shown in Figure 4, described possess automatically control and the vehicle audio of wireless communication function, it is preferred that
Also include front truck headlight circuit: MCU controller front truck headlight signal end connects front truck headlight circuit light letter
Number end of probe；
Described front truck headlight circuit includes: front truck headlight signal end connects the 56th resistance one end, the 56th resistance
The other end connects the 119th resistance one end and the 6th diode cathode respectively, the 119th resistance other end ground connection,
6th diode cathode ground connection, the 6th diode cathode is also connected with the 54th resistance one end, the 54th resistance another
End connection the 62nd electric capacity one end and the 31st resistance one end respectively, the 62nd electric capacity other end ground connection, the 31st
Resistance other end ground connection, the 31st resistance one end is also connected with the 52nd audion grid, the 52nd audion source electrode
Ground connection, the 52nd audion drain electrode connects the 10th resistance one end and the 11st resistance one end, the 11st resistance respectively
The other end connects power supply end, and the 10th resistance other end connects the 232nd electric capacity one end and MCU respectively
Controller front truck headlight acquisition of signal end, the 232nd electric capacity other end connection the 52nd audion source electrode, the 52nd
Audion grid is also respectively connected with the 13rd resistance one end and the 14th resistance one end, and the 13rd resistance other end is even
Connecing MCU controller front truck headlight PWM modulation signal end, the 14th resistance other end connects MCU and controls
Device front truck headlight acquisition of signal end.
Having the beneficial effect that of technique scheme can be by headlight information Real-time Feedback by front truck headlight circuit
To MCU controller, MCU carries out respective handling, and this circuit design is reasonable.
As it is shown in figure 5, described possessing automatically controls and the vehicle audio of wireless communication function, it is preferred that
Also include system power switch circuit；MCU controller system power switch signal end connection system power supply is opened
Pass circuit MCU switching signal end, system power switch Circuits System power end connection system power switch end,
System power switch circuit power supply end connects circuit power supply end；
Described system power switch circuit includes: the 5th field effect transistor base stage connects MCU controller system electricity
Source switch signal end, the 5th field effect transistor grounded emitter, the 5th field effect transistor colelctor electrode connects the 66th electricity
Resistance one end, the 66th resistance other end connects the 91st resistance one end and the 2nd field effect transistor base stage respectively, the
The 91 resistance other ends connect the 2nd field effect transistor emitter stage and the 79th electric capacity one end respectively, and the 79th electric capacity is another
One end ground connection, the 2nd field effect transistor emitter stage is also connected with circuit power supply end, the 2nd field effect transistor colelctor electrode
Connect the 68th resistance one end and the 85th electric capacity one end, the 68th resistance other end ground connection, the 85th electric capacity respectively
Other end ground connection, the 85th electric capacity one end is also respectively connected with the 84th electric capacity one end and system power supply switch terminals, the
84 electric capacity other end ground connection.
The having the beneficial effect that system power switch plays and control vehicle-mounted middle control power supply start and stop of technique scheme
Effect, it is ensured that the normally-open and shutoff of system, energy-saving and cost-reducing, power supply output is stable.
As shown in Figure 8, described possess automatically control and the vehicle audio of wireless communication function, it is preferred that
Also include MCU reset circuit；MCU reset circuit signal end connects MCU controller and resets end, MCU
Reset circuit power control terminal connects circuit power end；
Described MCU reset circuit includes: MCU controller reset end connect respectively the 73rd electric capacity one end and
Resetting chip and reset end, the 73rd electric capacity other end ground connection, MCU controller resets end and is also connected with the 58th electricity
Resistance one end, the 58th resistance other end connects MCU controller power source signal end, resets chip power end and divides
Not Lian Jie the 72nd electric capacity one end and power supply feeder ear, the 72nd electric capacity other end ground connection.
Technique scheme have the beneficial effect that by reset circuit ensure that vehicle-mounted middle control occur the machine of delaying or
During person's abnormality, again refreshing, circuit design is reasonable.
As shown in figure 11, described possess automatically control and the vehicle audio of wireless communication function, it is preferred that
Also include memorizer；MCU controller store clock signal end connects memory clock signal end, and MCU is controlled
Device data output end processed connects memory data input, and memory power end connects power supply end；
Described memorizer includes: power supply end connects the 9th electric capacity one end and the 8th electric capacity one end respectively, the
9 electric capacity other end ground connection, the 8th electric capacity other end ground connection, power supply end is also connected with storage chip power end
Communicate holding end with storage, and the 12nd resistance one end connects power supply end, and the 12nd resistance other end connects to be deposited
Storage chip write-protect end, the 9th resistance one end connects the 12nd resistance one end, and the 9th resistance other end connects respectively
The chip connecing storage chip selects end and MCU controller chip to select end, and MCU controller data inputs
End connects storage chip data output end.
Having the beneficial effect that of technique scheme stores relevant control parameter by memorizer, passes through MCU
Call at any time and store.
Wherein Q2 is preferably SMBT1229LT1G, and Q1, Q5 are preferably PDTC143ZT.
The reset circuit chips of MCU is preferably NCP803SN308T1G.
7th diode is preferably BAV99.
Key circuit is preferably 9850B-30Y917.
MCU controller is preferably MB9G711DA.
The preferred U2 of clock crystal oscillator is 74AUP1Z04GW.
Memorizer is preferably S25FL032P0XMFI013.
Bluetooth chip is preferably NF2301.
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ",
The description of " concrete example " or " some examples " etc. means to combine the concrete spy of this embodiment or example description
Levy, structure, material or feature are contained at least one embodiment or the example of the present invention.In this explanation
In book, the schematic representation of above-mentioned term is not necessarily referring to identical embodiment or example.And, retouch
Specific features, structure, material or the feature stated can be in any one or more embodiments or example
Combine in an appropriate manner.
Although an embodiment of the present invention has been shown and described, those of ordinary skill in the art can manage
Solve: these embodiments can be carried out in the case of without departing from the principle of the present invention and objective multiple change,
Amendment, replacement and modification, the scope of the present invention is limited by claim and equivalent thereof.
Claims (9)
1. one kind possesses and automatically controls and the vehicle audio of wireless communication function, it is characterised in that including:
MCU controller, Bluetooth circuit, microphone testing circuit, MCU clock crystal oscillator；
MCU controller Bluetooth signal end connects Bluetooth circuit signal end, and Bluetooth circuit microphone signal end connects
Microphone testing circuit signal end, MCU controller crystal oscillation signal end connects MCU clock crystal oscillator signal end.
The most according to claim 1 possess automatically control and the vehicle audio of wireless communication function, its
Being characterised by, described microphone testing circuit includes:
The detection of MCU controller microphone controls end and connects the 54th field effect transistor colelctor electrode and the 96th resistance respectively
One end, the 96th resistance other end connects 3.3V power end, and the 54th field effect transistor base stage connects the 107th respectively
Resistance one end and the 235th electric capacity one end, the 235th electric capacity other end connects the 54th field effect transistor respectively and launches
Pole and ground connection, the 107th resistance other end connects Bluetooth circuit microphone signal end.
The most according to claim 2 possess automatically control and the vehicle audio of wireless communication function, its
Being characterised by, described Bluetooth circuit includes:
Antenna one end the 231st electric capacity in parallel, then connects Bluetooth chip antenna signal interaction end, Bluetooth chip
Microphone signal end connection the 18th electric capacity one end, the 18th electric capacity other end connection the 30th resistance one end, the 30th
The resistance other end connects the 107th resistance other end, and the 18th electric capacity other end is also connected with the 28th resistance one end,
28th resistance other end ground connection, Bluetooth chip microphone signal end is also connected with the 19th electric capacity one end, the 19th electricity
Hold the other end and connect the 29th resistance one end and the 33rd resistance one end respectively, the 29th resistance other end ground connection,
The 33rd resistance other end connects the 186th resistance one end, and the 186th resistance other end connects 8V power supply, blue
Tooth chip data reads end and connects the 25th resistance one end, and the 25th resistance other end connects the 36th resistance respectively
One end and data bus terminal, the 36th resistance other end connects 3.3V power supply, and Bluetooth chip data sending terminal is even
Connecing the 26th resistance one end, the 26th resistance other end connects data bus terminal.
The most according to claim 1 possess automatically control and the vehicle audio of wireless communication function, its
Being characterised by, described MCU clock crystal oscillator includes:
5th electric capacity one end connects the 1st diode cathode and the 2nd diode cathode respectively, and the 1st diode is just
Pole connecting sound equipment power button, the 2nd diode cathode connection MCU controller crystal oscillator control end, the 2nd two
Pole pipe negative pole is also connected with the 1st field effect transistor base stage, and the 1st field effect transistor base stage is also connected with the 4th resistance one end,
The 4th resistance other end connects the 3rd diode cathode, and the 3rd diode cathode connects automobile ACC signal,
MCU controller power supply end connects the 5th resistance one end, and the 5th resistance other end connects the 1st field effect
Pipe collector, the 1st field effect transistor colelctor electrode is also connected with oikocryst and shakes chip Enable Pin, and the oikocryst chip data that shakes is defeated
Entering end and connect the 6th inductance one end and the 2nd electric capacity one end respectively, the 6th inductance other end connects the 4th electric capacity one
End, the 4th electric capacity other end ground connection, the 2nd electric capacity other end ground connection, oikocryst shakes control chip data input pin
Being also connected with passive crystal oscillator one end, the passive crystal oscillator other end connects the 2nd resistance one end and the 7th electric capacity one end respectively,
7th electric capacity other end ground connection, the 2nd resistance other end connects oikocryst and shakes chip data outfan, and oikocryst shakes core
Sheet feeder ear connects the 13rd inductance one end and the 1st electric capacity one end respectively, and the 13rd inductance other end connects power supply
Power end, the 1st electric capacity other end ground connection.
The most according to claim 1 possess automatically control and the vehicle audio of wireless communication function, its
It is characterised by, also includes circuit of moveing backward: MCU controller astern signal end connects reversing circuit astern signal
End of probe；
Described reversing circuit includes: the 72nd resistance one end connects astern signal end, and the 72nd resistance other end divides
Not Lian Jie the 53rd resistance one end and the 41st diode cathode, the 53rd resistance other end ground connection, the 41st 2 pole
Pipe plus earth, the 41st diode cathode is also connected with the 70th resistance one end, and the 70th resistance other end is respectively
Connect the 99th electric capacity one end and the 71st resistance one end, the 99th electric capacity other end ground connection, the 71st resistance another
End ground connection, the 71st resistance one end is also connected with MCU controller astern signal end.
The most according to claim 1 possess automatically control and the vehicle audio of wireless communication function, its
It is characterised by, also includes front truck headlight circuit: MCU controller front truck headlight signal end connects front truck headlight
Circuit light signal end of probe；
Described front truck headlight circuit includes: front truck headlight signal end connects the 56th resistance one end, the 56th resistance
The other end connects the 119th resistance one end and the 6th diode cathode respectively, the 119th resistance other end ground connection,
6th diode cathode ground connection, the 6th diode cathode is also connected with the 54th resistance one end, the 54th resistance another
End connection the 62nd electric capacity one end and the 31st resistance one end respectively, the 62nd electric capacity other end ground connection, the 31st
Resistance other end ground connection, the 31st resistance one end is also connected with the 52nd audion grid, the 52nd audion source electrode
Ground connection, the 52nd audion drain electrode connects the 10th resistance one end and the 11st resistance one end, the 11st resistance respectively
The other end connects power supply end, and the 10th resistance other end connects the 232nd electric capacity one end and MCU respectively
Controller front truck headlight acquisition of signal end, the 232nd electric capacity other end connection the 52nd audion source electrode, the 52nd
Audion grid is also respectively connected with the 13rd resistance one end and the 14th resistance one end, and the 13rd resistance other end is even
Connecing MCU controller front truck headlight PWM modulation signal end, the 14th resistance other end connects MCU and controls
Device front truck headlight acquisition of signal end.
The most according to claim 1 possess automatically control and the vehicle audio of wireless communication function, its
It is characterised by, also includes system power switch circuit；MCU controller system power switch signal end connects
System power switch circuit MCU switching signal end, system power switch Circuits System power end connection system
Power switch end, system power switch circuit power supply end connects circuit power supply end；
Described system power switch circuit includes: the 5th field effect transistor base stage connects MCU controller system electricity
Source switch signal end, the 5th field effect transistor grounded emitter, the 5th field effect transistor colelctor electrode connects the 66th electricity
Resistance one end, the 66th resistance other end connects the 91st resistance one end and the 2nd field effect transistor base stage respectively, the
The 91 resistance other ends connect the 2nd field effect transistor emitter stage and the 79th electric capacity one end respectively, and the 79th electric capacity is another
One end ground connection, the 2nd field effect transistor emitter stage is also connected with circuit power supply end, the 2nd field effect transistor colelctor electrode
Connect the 68th resistance one end and the 85th electric capacity one end, the 68th resistance other end ground connection, the 85th electric capacity respectively
Other end ground connection, the 85th electric capacity one end is also respectively connected with the 84th electric capacity one end and system power supply switch terminals, the
84 electric capacity other end ground connection.
The most according to claim 1 possess automatically control and the vehicle audio of wireless communication function, its
It is characterised by, also includes MCU reset circuit；MCU reset circuit signal end connects MCU and controls to think highly of
Putting end, MCU reset circuit power control terminal connects circuit power end；
Described MCU reset circuit includes: MCU controller reset end connect respectively the 73rd electric capacity one end and
Resetting chip and reset end, the 73rd electric capacity other end ground connection, MCU controller resets end and is also connected with the 58th electricity
Resistance one end, the 58th resistance other end connects MCU controller power source signal end, resets chip power end and divides
Not Lian Jie the 72nd electric capacity one end and power supply feeder ear, the 72nd electric capacity other end ground connection.
The most according to claim 1 possess automatically control and the vehicle audio of wireless communication function, its
It is characterised by, also includes memorizer；MCU controller store clock signal end connects memory clock signal
End, MCU controller data outfan connects memory data input, and memory power end connects power supply
Power end；
Described memorizer includes: power supply end connects the 9th electric capacity one end and the 8th electric capacity one end respectively, the
9 electric capacity other end ground connection, the 8th electric capacity other end ground connection, power supply end is also connected with storage chip power end
Communicate holding end with storage, and the 12nd resistance one end connects power supply end, and the 12nd resistance other end connects to be deposited
Storage chip write-protect end, the 9th resistance one end connects the 12nd resistance one end, and the 9th resistance other end connects respectively
The chip connecing storage chip selects end and MCU controller chip to select end, and MCU controller data inputs
End connects storage chip data output end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620310998.XU CN205610746U (en) | 2016-04-14 | 2016-04-14 | On -vehicle stereo set that possesses automatic control and wireless conversation function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620310998.XU CN205610746U (en) | 2016-04-14 | 2016-04-14 | On -vehicle stereo set that possesses automatic control and wireless conversation function |
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| CN205610746U true CN205610746U (en) | 2016-09-28 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107864394A (en) * | 2017-12-11 | 2018-03-30 | 延锋伟世通电子科技（上海）有限公司 | A kind of vehicle-mounted Ethernet AVB synchronous clock generators |
| CN108039886A (en) * | 2017-12-12 | 2018-05-15 | 晶晨半导体(上海)股份有限公司 | A kind of method that crystal frequency deviation is calibrated by central processing unit internal loop |
-
2016
- 2016-04-14 CN CN201620310998.XU patent/CN205610746U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107864394A (en) * | 2017-12-11 | 2018-03-30 | 延锋伟世通电子科技（上海）有限公司 | A kind of vehicle-mounted Ethernet AVB synchronous clock generators |
| CN107864394B (en) * | 2017-12-11 | 2023-08-29 | 延锋伟世通电子科技（上海）有限公司 | Vehicle-mounted Ethernet AVB synchronous clock generator |
| CN108039886A (en) * | 2017-12-12 | 2018-05-15 | 晶晨半导体(上海)股份有限公司 | A kind of method that crystal frequency deviation is calibrated by central processing unit internal loop |
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