CN210733977U - Intelligent rearview mirror - Google Patents
Intelligent rearview mirror Download PDFInfo
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- CN210733977U CN210733977U CN201921146320.2U CN201921146320U CN210733977U CN 210733977 U CN210733977 U CN 210733977U CN 201921146320 U CN201921146320 U CN 201921146320U CN 210733977 U CN210733977 U CN 210733977U
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Abstract
The utility model discloses an intelligent rearview mirror, which comprises a controller, a communication module, a memory card seat, a power module, a front camera, a positioning module, an audio module and a display touch screen; the communication module, the memory card holder, the power module, the front camera, the positioning module, the audio module and the display touch screen are all connected with the controller, and the power module is connected with the vehicle-mounted power supply; the controller, the communication module, the memory card seat, the power module, the positioning module and the audio module are all arranged inside the rearview mirror shell; the front camera is embedded in the back of the rearview mirror shell; the rearview mirror shell is provided with a sound hole corresponding to the audio module.
Description
Technical Field
The utility model belongs to the technical field of on-vehicle electron, concretely relates to intelligence rear-view mirror.
Background
With the improvement of the requirement of consumers on living quality, the automobile becomes a basic consumer product, the quantity of the automobile is increased day by day, the automobile manufacturers are more accurate and more fierce, and the consumers require the automobile to be more personalized and fashionable on the basis of meeting the transportation, and provide higher requirements on comfort, controllability and safety.
The intelligent rearview mirror has the safety and entertainment functions of driving the automobile such as voice control, navigation, overspeed reminding, driving recording, real-time online audio-visual and the like, so the intelligent rearview mirror is more and more concerned by people.
The voice control system in the existing intelligent rearview mirror generally adopts software noise reduction technology, and the application has the defects that the voice recognition of the equipment is easy to misjudge to generate wrong operation, and is easy to be influenced by environmental noise on a vehicle, the control voice of a driver cannot be generated respectively, and the phenomenon of insensitive voice control response is generated; meanwhile, in the image transmission process of the rear camera, a USB transmission mode is generally adopted, and in order to achieve the transmission of a large-distance video signal from a trunk to a vehicle central control, a USB signal amplification circuit board needs to be added in the middle section of a rear camera signal transmission line, so that the fault rate is increased, the USB signal amplification circuit board is easily influenced by the ambient temperature, and the signal transmission is unstable under the low-temperature condition below-20 ℃.
SUMMERY OF THE UTILITY MODEL
Not enough to the above-mentioned among the prior art, the utility model provides an intelligence rear-view mirror has solved voice control and has easily received the insensitive problem of noise influence reaction to the poor problem of rear camera video signal transmission effect in the current intelligence rear-view mirror has been solved.
In order to achieve the purpose of the invention, the utility model adopts the technical scheme that: an intelligent rearview mirror comprises a controller, a communication module, a memory card seat, a power module, a front camera, a positioning module, an audio module and a display touch screen;
the communication module, the memory card seat, the power module, the front camera, the positioning module, the audio module and the display touch screen are all connected with the controller, and the power module is connected with the vehicle-mounted power supply;
the controller, the communication module, the memory card seat, the power module, the positioning module and the audio module are all arranged inside the rearview mirror shell;
the front camera is embedded in the back of the rearview mirror shell;
and a sound hole is formed in the position, corresponding to the arrangement position of the audio module, of the rearview mirror shell.
Further, the power supply module comprises a voltage reduction circuit and a power supply management circuit which are connected with each other;
the voltage reduction circuit is further connected with a vehicle-mounted power supply, and the power management circuit is further connected with the controller.
Further, the voltage reduction circuit comprises a chip U2 with model number SY8204 FCC;
the PVIN end of the chip U2 is respectively connected with the SVIN end of the chip U2, one end of the capacitor CE32, one end of the capacitor CE42 and the anode of the capacitor CE 20;
the SVIN end of the chip U2 is also connected with one end of a resistor RE124, and the other end of the resistor RE124 is connected with a grounding resistor RE 125;
the VCC end of the chip U2 is respectively connected with the other end of the capacitor CE32, the other end of the capacitor CE42 and the negative electrode of the capacitor CE20 through a capacitor CE37, and the negative electrode of the capacitor CE20 is grounded;
the EN end of the chip U2 is connected with the other end of the resistor RE 124;
the SS end of the chip U2 is connected with a grounding capacitor CE 51;
the GND end of the chip U2 is grounded;
the BS end of the chip U2 is connected with one end of an inductor LP8 through a capacitor CE31, and the other end of the inductor LP8 is respectively connected with one end of a capacitor CE22, one end of a resistor RE104, a power supply VDC1, a grounding capacitor CE34, a grounding capacitor CE33, one end of a resistor RE130, a source of a field effect tube QE18, a source of a field effect tube QE20, one end of the capacitor CE52 and one end of a resistor RE 91;
the LX end of the chip U2 is connected with one end of an inductor LP 8;
the FB end of the chip U2 is respectively connected with the other end of the capacitor CE22, the other end of the resistor RE104 and the grounding resistor RE 103;
the other end of the resistor RE130 is respectively connected with a drain electrode of a field-effect tube QE18, a drain electrode of a field-effect tube QE20 and a positive electrode of a capacitor CE66, the positive electrode of the capacitor CE66 is also connected with a power supply VDC, the negative electrode of the capacitor CE66 is grounded, and a grid electrode of the field-effect tube QE18 is respectively connected with the other end of the capacitor CE52 and a grid electrode of the field-effect tube QE 20;
the grid electrode of the field effect transistor QE20 is also respectively connected with the other end of the resistor RE91 and the collector electrode of the triode QE19, and the base electrode of the triode QE19 is connected with the emitting electrode of the triode QE 19;
the base electrode of the triode QE19 is used as the input end of the voltage reduction circuit and is connected with a vehicle-mounted power supply;
the other end of the resistor RE124 is connected to the power management circuit as an output end of the voltage reduction circuit.
Furthermore, the power management circuit comprises a controller power management sub-circuit, a rear camera signal conversion power management sub-circuit and a rear camera 12V carrier power management sub-circuit;
the controller power management sub-circuit comprises a chip UP2 with the model number SY7152 ABC;
the IN end of the chip UP2 is connected with one end of an inductor LP7, a grounding capacitor CP3, a grounding capacitor CP24 and a power supply PS respectively, the EN end of the chip UP2 is connected with a 3V power supply, the GND end of the chip UP2 is grounded, the LX end of the chip UP2 is connected with the other end of the inductor LP7 and the anode of a diode DP3 respectively, the FB end of the chip UP2 is connected with one end of a resistor RP4 and a grounding resistor RP1 respectively, the other end of the resistor RP4 is connected with the cathode of the diode DP3, the grounding capacitor CP42, the grounding capacitor CP20, the anode of the diode DP1 and the 5V power supply respectively, and the cathode of the diode DP1 is connected with the-5V power supply;
the rear camera signal conversion power supply management sub-circuit comprises a resistor RF 34;
one end of the resistor RF34 is used as a signal input end of a rear camera signal conversion power supply management sub-circuit, the other end of the resistor RF34 is respectively connected with a grounding capacitor CF23, a grounding resistor RF33 and a base electrode of a triode QF2, an emitting electrode of the triode QF2 is grounded, a collector electrode of the triode QF2 is respectively connected with a grid electrode of a field-effect tube QF1 and one end of the resistor RF30, the other end of the resistor RF30 is respectively connected with a source electrode of the field-effect tube QF1 and a 3V power supply, and a drain electrode of the field-effect tube QF1 is connected with a power supply VCC-CVBS;
the 12V carrier power management sub-circuit of the rear camera comprises a chip UH10 with the model number WS 4620H-8/TR;
the VIN1 end of the chip UH10 is respectively connected with grounding capacitors CH87 and 12V power supply and the VIN2 end of the chip UH10, the nEN end of the chip UH10 is respectively connected with one end of a resistor RH61 and a collector of a triode QH8, the other end of the resistor RH61 is connected with a power supply PS, an emitter of a triode QH8 is grounded, a base of the triode QH8 is connected with a power supply VCC-CVBS, and a base of the triode QH8 is also connected with the emitter thereof;
the EP terminal of the chip UH10 and the VSS terminal of the chip UH10 are both grounded;
the VOUT2 end of the chip UH10 and the VOUT1 end of the chip UH10 are respectively connected with a 12V power supply and a grounding capacitor CH 89;
the RSET terminal of the chip UH10 is connected with a grounding resistor RH 62.
Further, the front camera is an FHD camera;
the intelligent rearview mirror is also externally connected with a rear camera arranged outside the vehicle body, the rear camera is an analog camera and is connected with the controller through a signal conversion circuit;
the signal conversion circuit comprises a signal sending end, a sending end capacitance resistance sub-circuit, a coaxial signal line, a receiving end capacitance resistance sub-circuit and a signal receiving end which are connected in sequence;
the rear camera is connected with a signal sending end, and the controller is connected with a signal receiving end;
the signal transmitting end is a signal output end with the chip model number of NS 2520;
the signal receiving end is a signal input end with a chip model number of NS 2521;
the transmitting end resistance-capacitance sensing sub-circuit comprises a capacitor C1 and a capacitor C2;
one end of the capacitor C1 is used as an output end of a transmitting-end resistance-capacitance inductor circuit and connected with a coaxial signal line, the other end of the capacitor C1 is respectively connected with one end of an inductor L1 and one end of a resistor R1, the other end of the inductor L1 is respectively connected with the other end of a resistor R1, one end of a resistor R3 and a grounding capacitor C39, the other end of the resistor R3 is respectively connected with a 3V power supply and one end of a resistor R4, and the other end of the resistor R4 is connected with a grounding capacitor C40;
one end of the capacitor C2 is connected with a grounding resistor R5, the other end of the capacitor C2 is respectively connected with one end of a resistor R2 and one end of an inductor L2, and the other end of the resistor R2 is respectively connected with the other end of an inductor L2 and a grounding capacitor C40;
one end of the resistor R3 and the other end of the resistor R4 are used as input ends of the transmitting end capacitance-resistance sensing sub-circuit and are connected with the signal transmitting end;
the receiving end resistance-capacitance sensing sub-circuit comprises a capacitor C26 and a capacitor C28;
one end of the capacitor C26 is used as a signal input end of a receiving end resistance-capacitance electronic circuit and is connected with a coaxial signal line, the other end of the capacitor C26 is respectively connected with one end of a resistor R14 and one end of an inductor L2, the other end of the resistor R14 is respectively connected with the other end of an inductor L2, one end of a grounding capacitor C25, one end of a grounding resistor R13 and one end of a capacitor C27, and the other end of the capacitor C27 is respectively connected with one end of a resistor R15 and one end of a resistor R16;
one end of the capacitor C28 is connected with a ground resistor R28, the other end of the capacitor C28 is connected with one end of an inductor L3 and the other end of a resistor R19, the other end of the inductor L3 is connected with one end of a resistor R19, one end of a ground capacitor C30, one end of a ground resistor R20 and one end of a capacitor C29, and the other end of the capacitor C29 is connected with the other end of a resistor R16 and one end of a resistor R17;
the other end of the resistor 15 and the other end of the resistor R17 are both used as the output end of the receiving end capacitance-resistance sensing sub-circuit to be connected with a signal receiving end.
Furthermore, the controller is also connected with the coaxial signal line through a filter circuit;
the filter circuit comprises a capacitor CH 83;
one end of the capacitor CH83 is grounded, and the other end of the capacitor CH83 is connected with a 12V power supply; the power connection end of the capacitor CH83 is respectively connected with one end of an inductor LH4 and a grounded capacitor CH84, the other end of the inductor LH4 is respectively connected with one end of a grounded capacitor CH85, a grounded capacitor CH86 and a resistor RH58 and one end of an inductor LH5, the other end of the inductor LH5 is respectively connected with the other end of a resistor RH58, one end of the inductor LH6 and one end of a resistor RH59, and the other end of the inductor LH6 is respectively connected with the other end of a resistor RH59 and a coaxial signal wire welding point AH 1;
the other end of the inductor LH6 is connected to the coaxial signal line bonding pad AH1 as the output terminal of the filter circuit.
Further, the audio module includes an audio input unit and an audio output unit;
the audio input unit comprises three sound pick-up devices, wherein two sound pick-up devices are connected with the controller through a microphone array module FVM, and the other sound pick-up device is used as a Bluetooth telephone microphone;
the audio output unit is a loudspeaker.
Further, the display touch screen is a 5-point capacitive display touch screen, and the resolution of the display touch screen is 1920 × 320.
Further, the controller model is full log V66.
The communication module comprises a 4G full-network communication unit, a WIFI short-range communication unit and a Bluetooth short-range communication unit;
the model of a main control chip of the 4G full-network communication unit is G35;
the model of a main control chip of the WIFI short-range communication unit is ESP 8089;
the model of a master control chip of the Bluetooth short-range communication unit is I30-702;
the type of the positioning module is G9803;
the storage card inserted into the storage card socket is a TF card.
Furthermore, the intelligent rearview mirror also comprises a vibration sensor, and the vibration sensor is connected with the controller;
the model of the vibration sensor is DA 380.
The utility model provides an intelligent rearview mirror adopts the hardware noise reduction module, has reduced pronunciation maloperation probability under the noise environment, has improved the recognition rate of driver's pronunciation, has strengthened the sensitivity of voice operation; meanwhile, the coaxial transmission technology is adopted, the requirement of the video transmission distance can be met without adding an amplifier in a video transmission line, and the failure probability of an electronic device is reduced; the intelligent rearview mirror has the characteristics of intellectualization, powerful function, difficulty in being influenced by the environment and the like.
Drawings
Fig. 1 is the utility model provides a in the utility model discloses an intelligence rear-view mirror structure chart.
Fig. 2 is the utility model discloses in the utility model discloses well step-down circuit schematic diagram.
Fig. 3 is a schematic diagram of the controller power management sub-circuit of the present invention.
Fig. 4 is the utility model discloses well rear camera signal conversion power management sub-circuit schematic diagram.
Fig. 5 is the 12V carrier wave power management sub-circuit diagram of the rear camera in the utility model.
Fig. 6 is a schematic diagram of the resistance-capacitance sensor circuit of the present invention.
Fig. 7 is a schematic diagram of the resistance-capacitance sensor circuit of the middle receiving terminal of the present invention.
Fig. 8 is a schematic diagram of the middle filter circuit of the present invention.
Fig. 9 is a schematic diagram of a circuit connection between the microphone array module FVM and the controller according to the present invention.
Detailed Description
The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and various changes will be apparent to those skilled in the art as long as they are within the spirit and scope of the present invention as defined and defined by the appended claims, and all inventions contemplated by the present invention are protected.
As shown in fig. 1, an intelligent rearview mirror includes a controller, a communication module, a memory card socket, a power module, a front camera, a positioning module, an audio module and a display touch screen;
the communication module, the memory card holder, the power supply module, the camera, the positioning module, the audio module and the display touch screen are all connected with the controller, and the power supply module is connected with the vehicle-mounted power supply;
the controller, the communication module, the memory card seat, the power module, the positioning module and the audio module are all arranged inside the rearview mirror shell;
the camera comprises a front camera and a rear camera, and is respectively embedded in the front and the back of the rearview mirror shell, and the display touch screen is arranged and embedded in the front of the rearview mirror shell;
the rearview mirror shell is provided with a sound hole corresponding to the audio module.
The power supply module comprises a voltage reduction circuit and a power supply management circuit which are connected with each other; the voltage reduction circuit is also connected with a vehicle-mounted power supply, and the power supply management circuit is also connected with the controller.
The voltage reduction circuit reduces 12V voltage input by the vehicle-mounted power supply into 5V and 3.3V, supplies power for the controller and other modules, and has a voltage stabilization function; the power management circuit is provided with a control signal by the controller, completes power supply management of each component module, and realizes functions of restarting, dormancy, parking monitoring and the like of the rearview mirror.
As shown in fig. 2, the voltage reduction circuit includes a chip U2 model SY8204 FCC;
the PVIN end of the chip U2 is respectively connected with the SVIN end of the chip U2, one end of the capacitor CE32, one end of the capacitor CE42 and the anode of the capacitor CE 20;
the SVIN end of the chip U2 is further connected with one end of a resistor RE124, and the other end of the resistor RE124 is connected with a grounding resistor RE 125;
the VCC end of the chip U2 is respectively connected with the other end of the capacitor CE32, the other end of the capacitor CE42 and the negative electrode of the capacitor CE20 through the capacitor CE37, and the negative electrode of the capacitor CE20 is grounded;
the EN end of the chip U2 is connected with the other end of the resistor RE 124;
the SS end of the chip U2 is connected with a grounding capacitor CE 51;
the GND terminal of the chip U2 is grounded;
the BS end of the chip U2 is connected with one end of an inductor LP8 through a capacitor CE31, and the other end of the inductor LP8 is respectively connected with one end of a capacitor CE22, one end of a resistor RE104, a power supply VDC1, a grounding capacitor CE34, a grounding capacitor CE33, one end of a resistor RE130, a source of a field effect tube QE18, a source of a field effect tube QE20, one end of a capacitor CE52 and one end of a resistor RE 91;
the LX end of the chip U2 is connected with one end of the inductor LP 8;
the FB end of the chip U2 is respectively connected with the other end of the capacitor CE22, the other end of the resistor RE104 and the grounding resistor RE 103;
the other end of the resistor RE130 is respectively connected with the drain electrode of a field-effect tube QE18, the drain electrode of a field-effect tube QE20 and the anode of a capacitor CE66, the anode of the capacitor CE66 is also connected with a power supply VDC, the cathode of the capacitor CE66 is grounded, and the grid electrode of the field-effect tube QE18 is respectively connected with the other end of the capacitor CE52 and the grid electrode of the field-effect tube QE 20;
the grid electrode of the field effect transistor QE20 is also respectively connected with the other end of the resistor RE91 and the collector electrode of the triode QE19, and the base electrode of the triode QE19 is connected with the emitting electrode of the triode QE 19;
the base electrode of the triode QE19 is used as the input end of the voltage reduction circuit and is connected with the vehicle-mounted power supply;
the other end of the resistor RE124 is connected to the power management circuit as an output terminal of the voltage step-down circuit.
The power management circuit comprises a controller power management sub-circuit, a rear camera signal conversion power management sub-circuit and a rear camera 12V carrier power management sub-circuit;
as shown in FIG. 3, the controller power management sub-circuit includes a chip UP2 of model SY7152 ABC;
the IN end of the chip UP2 is connected with one end of an inductor LP7, a grounding capacitor CP3, a grounding capacitor CP24 and a power supply PS respectively, the EN end of the chip UP2 is connected with a 3V power supply, the GND end of the chip UP2 is grounded, the LX end of the chip UP2 is connected with the other end of the inductor LP7 and the anode of a diode DP3 respectively, the FB end of the chip UP2 is connected with one end of a resistor RP4 and a grounding resistor RP1 respectively, the other end of the resistor RP4 is connected with the cathode of the diode DP3, the grounding capacitor CP42, the grounding capacitor CP20, the anode of the diode DP1 and the 5V power supply respectively, and the cathode of the diode DP1 is connected with the-5V power supply;
as shown in fig. 4, the rear camera signal conversion power management sub-circuit includes a resistor RF 34;
one end of a resistor RF34 is used as a signal input end of a rear camera signal conversion power supply management sub-circuit, the other end of the resistor RF34 is respectively connected with a grounding capacitor CF23, a grounding resistor RF33 and the base electrode of a triode QF2, the emitter electrode of the triode QF2 is grounded, the collector electrode of the triode QF2 is respectively connected with the grid electrode of a field-effect tube QF1 and one end of the resistor RF30, the other end of the resistor RF30 is respectively connected with the source electrode of the field-effect tube QF1 and a 3V power supply, and the drain electrode of the field-effect tube QF1 is connected with a power supply VCC-CVBS;
as shown in FIG. 5, the 12V carrier power management sub-circuit of the rear camera comprises a chip UH10 with model number WS 4620H-8/TR;
the VIN1 end of the chip UH10 is respectively connected with grounding capacitors CH87 and 12V power supply and the VIN2 end of the chip UH10, the nEN end of the chip UH10 is respectively connected with one end of a resistor RH61 and the collector of a triode QH8, the other end of the resistor RH61 is connected with a power supply PS, the emitter of a triode QH8 is grounded, and the base of the triode QH8 is connected with a power supply VCC-CVBS;
the EP terminal of the chip UH10 and the VSS terminal of the chip UH10 are both grounded;
a VOUT2 terminal of the chip UH10 and a VOUT1 terminal of the chip UH10 are respectively connected with a 12V power supply and a grounding capacitor CH 89;
the RSET terminal of the chip UH10 is connected to a ground resistor RH 62.
The front-facing camera is an FHD camera and supports data transmission of the FHD full high-definition camera;
the rear camera is an analog camera and is connected with the controller through a signal conversion circuit; the rear camera and the controller are in signal transmission in a coaxial mode, the coaxial mode is that single-ended signals are transmitted on a coaxial line by converting differential signals into single ends, and the signals and a power supply are superposed together; therefore, the signal conversion circuit comprises a signal sending end, a sending end capacitance resistance sub-circuit, a coaxial signal line, a receiving end capacitance resistance sub-circuit and a signal receiving end which are connected in sequence; the rear camera is connected with the signal sending end, and the controller is connected with the signal receiving end;
the signal transmitting end is a signal output end with the chip model of NS2520, and the signal receiving end is a signal input end with the chip model of NS 2521; the output of the NS2520 chip is a pair of high-speed differential signals, which are converted into coaxial signals (alternating current) through an external RC circuit and finally reach a controller, and the single-ended coaxial signals (differential) are reduced into differential signals through the external RC circuit and then sent to the NS 2520;
as shown in fig. 6, the transmit-side rc sub-circuit includes a capacitor C1 and a capacitor C2;
one end of a capacitor C1 is used as an output end of a transmitting-end resistance-capacitance inductor circuit and is connected with a coaxial signal line, the other end of a capacitor C1 is respectively connected with one end of an inductor L1 and one end of a resistor R1, the other end of the inductor L1 is respectively connected with the other end of a resistor R1, one end of a resistor R3 and a grounding capacitor C39, the other end of the resistor R3 is respectively connected with a 3V power supply and one end of a resistor R4, and the other end of the resistor R4 is connected with a grounding capacitor C40;
one end of a capacitor C2 is connected with a grounding resistor R5, the other end of a capacitor C2 is respectively connected with one end of a resistor R2 and one end of an inductor L2, and the other end of a resistor R2 is respectively connected with the other end of an inductor L2 and a grounding capacitor C40;
one end of the resistor R3 and the other end of the resistor R4 are used as input ends of the transmitting end capacitance-resistance sensing sub-circuit and are connected with the signal transmitting end;
as shown in fig. 7, the receiving-end rc sub-circuit includes a capacitor C26 and a capacitor C28;
one end of a capacitor C26 is used as a signal input end of a receiving end resistance-capacitance inductor circuit and is connected with a coaxial signal line, the other end of a capacitor C26 is respectively connected with one end of a resistor R14 and one end of an inductor L2, the other end of the resistor R14 is respectively connected with the other end of an inductor L2, one end of a grounding capacitor C25, one end of a grounding resistor R13 and one end of a capacitor C27, and the other end of a capacitor C27 is respectively connected with one end of a resistor R15 and one end of a resistor R16;
one end of a capacitor C28 is connected with a grounding resistor R28, the other end of a capacitor C28 is connected with one end of an inductor L3 and one end of a resistor R19 respectively, the other end of an inductor L3 is connected with one end of a resistor R19, one end of a grounding capacitor C30, one end of a grounding resistor R20 and one end of a capacitor C29 respectively, and the other end of the capacitor C29 is connected with the other end of a resistor R16 and one end of a resistor R17 respectively;
the other end of the resistor 15 and the other end of the resistor R17 are both used as the output end of the receiving end capacitance-resistance sensing sub-circuit to be connected with a signal receiving end.
The controller is also connected with the coaxial signal line through a filter circuit; the controller superposes 12V direct current on a coaxial signal wire through the filter circuit and transmits the direct current to the rear camera from the controller, so that extra power wires are not needed to be added to supply power for the rear camera.
As shown in fig. 8, the filter circuit includes a capacitor CH 83;
one end of the capacitor CH83 is grounded, and the other end of the capacitor CH83 is connected with a 12V power supply; the power connection end of the capacitor CH83 is respectively connected with one end of an inductor LH4 and a grounded capacitor CH84, the other end of the inductor LH4 is respectively connected with one end of a grounded capacitor CH85, a grounded capacitor CH86 and a resistor RH58 and one end of an inductor LH5, the other end of the inductor LH5 is respectively connected with the other end of a resistor RH58, one end of the inductor LH6 and one end of a resistor RH59, and the other end of the inductor LH6 is respectively connected with the other end of a resistor RH59 and a coaxial signal wire welding point AH 1;
the other end of the inductor LH6 is connected to the coaxial signal line bonding pad AH1 as the output terminal of the filter circuit.
The audio module comprises an audio input unit and an audio output unit;
the audio input unit comprises three sound pick-up devices, wherein two sound pick-up devices are connected with the controller through a microphone array module FVM, and the other sound pick-up device is used as a Bluetooth telephone microphone; the functions of voice control, call making and the like are realized through the sound pick-up; the audio output unit is a loudspeaker, and the audio output unit also supports FM signal transmission and outputs audio through the loudspeaker.
The microphone arrangement module FVM adopts a cloud known sound microphone array module FVM, has a good noise reduction effect, and has the following characteristics:
1. echo and mixed sound are removed comprehensively: two-channel stereo echo cancellation (AEC) while eliminating the effect between echo suppression and ambiguities mixing performance
2. High-quality noise elimination: on the premise of not influencing voice quality, noise is eliminated, microphone signals are enhanced, voice telephone communication is optimized, and voice recognition is strengthened.
3. Vehicle noise and wind noise filtration: the noise of wind sound (wind sound induced by opening air conditioner, window and open top), and the noise of engine and tyre can be eliminated to improve the performance of vehicle.
4. Sound source localization and restriction: the method can detect the position angle of a sound source within a 180-degree included angle formed by two microphones, can improve the direction identification performance in a special scene, can limit the recognition of the voice within a certain angle range, and can inhibit the noise influence outside a set range.
5. The integration is simple: the size is small, the interface is simple, the compatibility is strong, and the performance is stable.
The cloud known sound microphone array module FVM is a 22-pin noise reduction chip, and the pin descriptions thereof are shown in the following table:
| pin number | Pin name | Description of functions | Remarks for |
|
| 1 | VCCIN | Modular | Selectable | |
| 2 | USB_DP | USB- | Selectable |
|
| 3 | USB_DM | USB+ | Selectable |
|
| 4 | GND | Module ground | Is connected with the |
|
| 5 | WAKE_ON | GPIO1 | Reserve, may not connect | |
| 6 | IIS_RX_CLK | I2S input | AEC data input I2S _ BCLK | |
| 7 | IIS_DI | I2S input | AEC data input I2S _ |
|
| 8 | IIS_RX_LRCK | I2S input | AEC data input I2S _ |
|
| 9 | GND | Module ground | Is connected with the main board ground | |
| 10 | MINP2 | MIC+ | Client access left |
|
| 11 | MINN2 | MIC- | Negative pole of left MIC accessed by |
|
| 12 | VCC | 3.3V | Selectable 3.3 |
|
| 13 | I2S_BCLK | I2S output | Selectable |
|
| 14 | IIS_FS | I2S output | Selectable |
|
| 15 | IIS_DO | I2S output | |
|
| 16 | GND | Module ground | Is connected with the main board ground | |
| 17 | RESET | Reset port | To or from |
|
| 18 | IIC_CLK | IIC output | Connect |
|
| 19 | IIC_DATA | IIC output | Connect |
|
| 20 | GND | Module ground | Is connected with the main board ground | |
| 21 | MINP1 | MIC+ | Client access right MIC anode | |
| 22 | MINN1 | MIC- | Negative pole of right MIC for client access |
The circuit connection of the cloud known sound microphone array module FVM and the controller is as shown in fig. 9, wherein the recording channel adopts an IIS interface to transmit recording audio data, and the ACE reference signal uses an IIS output signal of broadcast.
The display touch screen is a 5-point capacitive display touch screen, and the resolution of the display touch screen is 1920 × 320.
The model of the controller is full log V66, and the controller runs an Android system to realize functions such as function scheduling, data calculation, module control and the like;
the communication module comprises a 4G full-network communication unit, a WIFI short-range communication unit and a Bluetooth short-range communication unit; and wireless communication between the rearview mirror and the monitoring platform and other equipment is completed.
The model of a main control chip of the 4G full-network communication unit is G35;
the model of a main control chip of the WIFI short-range communication unit is ESP 8089;
the model of a master control chip of the Bluetooth short-range communication unit is I30-702;
the model of the positioning module is G9803; the system is used for completing the functions of GPS and Beidou satellite real-time positioning and automobile navigation positioning of the rearview mirror;
the storage card inserted into the storage card socket is a TF card and is used for storing video data recorded by the rearview mirror;
the vibration sensor is connected with the controller and used for monitoring the state of the rearview mirror, when the rearview mirror is collided during driving, signals are sent to the controller in time to realize collision alarming, and the model of the vibration sensor is DA 380.
In an embodiment of the present invention, the functions of the intelligent rearview mirror include driving record, overspeed reminding, parking monitoring/driving collision alarm, backing visual, GPS positioning navigation, car position finding, voice control, bluetooth hands-free phone, etc.;
wherein, the driving record: the built-in camera or the additional camera is utilized to record images of the front and the back of the vehicle during driving, and the images are automatically stored in the storage equipment of the intelligent rearview mirror.
Overspeed reminding: navigation software in the intelligent rearview mirror operating system is generally internally provided with fixed electronic speed measurement reminding, can find the mobile speed measurement in real time and give out alarm sound, avoids overspeed of the automobile and ensures safe driving at any time.
Parking monitoring/driving collision alarming: a vibration sensor and an acceleration sensor are arranged in the intelligent rearview mirror, when the vibration or the acceleration of the vehicle is detected to exceed a set warning value, an alarm is generated, a camera is used for capturing, and videos of time periods before and after the alarm are recorded.
The reversing is visible: the intelligent rearview mirror can display images behind the vehicle when the vehicle is backed after the reversing camera is additionally arranged.
GPS positioning and navigation: after the equipment GPS, the Beidou satellite or the network is positioned in real time, navigation can be realized through the preloaded God navigation application software, and navigation information is broadcasted in a voice mode. After the network is connected, real-time road conditions can be broadcasted, and congestion is avoided.
Finding the automobile position: after the intelligent rearview mirror acquires the accurate position of the automobile by using a GPS, a Beidou satellite or network positioning, the intelligent rearview mirror is connected with a special application software available for a network to find the position of the automobile on an authorized smart phone or a tablet personal computer.
Voice control: based on the support of the network voice command library, an operating system in the intelligent rearview mirror can accurately analyze the voice command of the user and respond, so that intelligent voice conversation between people and a vehicle is realized. It is possible to recognize voices such as "make a call, open an application, play music, and voice chat".
Bluetooth hands-free telephone: the intelligent rearview mirror is matched with an intelligent mobile phone, and a mobile phone address list and a call record are synchronized; the functions of answering and hanging up the telephone and avoiding disturbance are realized;
besides the functions, the functions of talkback of car friends, music playing of Bluetooth synchronous mobile phones, wireless network sharing through wifi hotspots, FM transmission, online music, news information listening, and life and entertainment applications such as WeChat and Himalayan can be realized.
The utility model provides an intelligent rearview mirror adopts the hardware noise reduction module, has reduced pronunciation maloperation probability under the noise environment, has improved the recognition rate of driver's pronunciation, has strengthened the sensitivity of voice operation; meanwhile, the coaxial transmission technology is adopted, the requirement of the video transmission distance can be met without adding an amplifier in a video transmission line, and the failure probability of an electronic device is reduced; the intelligent rearview mirror has the characteristics of intellectualization, powerful function, difficulty in being influenced by the environment and the like.
Claims (10)
1. An intelligent rearview mirror is characterized by comprising a controller, a communication module, a storage card seat, a power module, a front camera, a positioning module, an audio module and a display touch screen;
the communication module, the memory card seat, the power module, the front camera, the positioning module, the audio module and the display touch screen are all connected with the controller, and the power module is connected with the vehicle-mounted power supply;
the controller, the communication module, the memory card seat, the power module, the positioning module and the audio module are all arranged inside the rearview mirror shell;
the front camera is embedded in the back of the rearview mirror shell;
and a sound hole is formed in the position, corresponding to the arrangement position of the audio module, of the rearview mirror shell.
2. The intelligent rearview mirror of claim 1, wherein the power module includes a voltage reduction circuit and a power management circuit connected to each other;
the voltage reduction circuit is further connected with a vehicle-mounted power supply, and the power management circuit is further connected with the controller.
3. The intelligent rearview mirror of claim 2, wherein said voltage-reducing circuit comprises a chip U2 model SY8204 FCC;
the PVIN end of the chip U2 is respectively connected with the SVIN end of the chip U2, one end of the capacitor CE32, one end of the capacitor CE42 and the anode of the capacitor CE 20;
the SVIN end of the chip U2 is also connected with one end of a resistor RE124, and the other end of the resistor RE124 is connected with a grounding resistor RE 125;
the VCC end of the chip U2 is respectively connected with the other end of the capacitor CE32, the other end of the capacitor CE42 and the negative electrode of the capacitor CE20 through a capacitor CE37, and the negative electrode of the capacitor CE20 is grounded;
the EN end of the chip U2 is connected with the other end of the resistor RE 124;
the SS end of the chip U2 is connected with a grounding capacitor CE 51;
the GND end of the chip U2 is grounded;
the BS end of the chip U2 is connected with one end of an inductor LP8 through a capacitor CE31, and the other end of the inductor LP8 is respectively connected with one end of a capacitor CE22, one end of a resistor RE104, a power supply VDC1, a grounding capacitor CE34, a grounding capacitor CE33, one end of a resistor RE130, a source of a field effect tube QE18, a source of a field effect tube QE20, one end of the capacitor CE52 and one end of a resistor RE 91;
the LX end of the chip U2 is connected with one end of an inductor LP 8;
the FB end of the chip U2 is respectively connected with the other end of the capacitor CE22, the other end of the resistor RE104 and the grounding resistor RE 103;
the other end of the resistor RE130 is respectively connected with a drain electrode of a field-effect tube QE18, a drain electrode of a field-effect tube QE20 and a positive electrode of a capacitor CE66, the positive electrode of the capacitor CE66 is also connected with a power supply VDC, the negative electrode of the capacitor CE66 is grounded, and a grid electrode of the field-effect tube QE18 is respectively connected with the other end of the capacitor CE52 and a grid electrode of the field-effect tube QE 20;
the grid electrode of the field effect transistor QE20 is also respectively connected with the other end of the resistor RE91 and the collector electrode of the triode QE19, and the base electrode of the triode QE19 is connected with the emitting electrode of the triode QE 19;
the base electrode of the triode QE19 is used as the input end of the voltage reduction circuit and is connected with a vehicle-mounted power supply;
the other end of the resistor RE124 is connected to the power management circuit as an output end of the voltage reduction circuit.
4. The intelligent rearview mirror of claim 2, wherein the power management circuit comprises a controller power management sub-circuit, a rear camera signal conversion power management sub-circuit and a rear camera 12V carrier power management sub-circuit;
the controller power management sub-circuit comprises a chip UP2 with the model number SY7152 ABC;
the IN end of the chip UP2 is connected with one end of an inductor LP7, a grounding capacitor CP3, a grounding capacitor CP24 and a power supply PS respectively, the EN end of the chip UP2 is connected with a 3V power supply, the GND end of the chip UP2 is grounded, the LX end of the chip UP2 is connected with the other end of the inductor LP7 and the anode of a diode DP3 respectively, the FB end of the chip UP2 is connected with one end of a resistor RP4 and a grounding resistor RP1 respectively, the other end of the resistor RP4 is connected with the cathode of the diode DP3, the grounding capacitor CP42, the grounding capacitor CP20, the anode of the diode DP1 and the 5V power supply respectively, and the cathode of the diode DP1 is connected with the-5V power supply;
the rear camera signal conversion power supply management sub-circuit comprises a resistor RF 34;
one end of the resistor RF34 is used as a signal input end of a rear camera signal conversion power supply management sub-circuit, the other end of the resistor RF34 is respectively connected with a grounding capacitor CF23, a grounding resistor RF33 and a base electrode of a triode QF2, an emitting electrode of the triode QF2 is grounded, a collector electrode of the triode QF2 is respectively connected with a grid electrode of a field-effect tube QF1 and one end of the resistor RF30, the other end of the resistor RF30 is respectively connected with a source electrode of the field-effect tube QF1 and a 3V power supply, and a drain electrode of the field-effect tube QF1 is connected with a power supply VCC-CVBS;
the 12V carrier power management sub-circuit of the rear camera comprises a chip UH10 with the model number WS 4620H-8/TR;
the VIN1 end of the chip UH10 is respectively connected with grounding capacitors CH87 and 12V power supply and the VIN2 end of the chip UH10, the nEN end of the chip UH10 is respectively connected with one end of a resistor RH61 and a collector of a triode QH8, the other end of the resistor RH61 is connected with a power supply PS, an emitter of a triode QH8 is grounded, a base of the triode QH8 is connected with a power supply VCC-CVBS, and a base of the triode QH8 is also connected with the emitter thereof;
the EP terminal of the chip UH10 and the VSS terminal of the chip UH10 are both grounded;
the VOUT2 end of the chip UH10 and the VOUT1 end of the chip UH10 are respectively connected with a 12V power supply and a grounding capacitor CH 89;
the RSET terminal of the chip UH10 is connected with a grounding resistor RH 62.
5. The intelligent rearview mirror of claim 1, wherein the front camera is an FHD camera;
the intelligent rearview mirror is also externally connected with a rear camera arranged outside the vehicle body, the rear camera is an analog camera and is connected with the controller through a signal conversion circuit;
the signal conversion circuit comprises a signal sending end, a sending end capacitance resistance sub-circuit, a coaxial signal line, a receiving end capacitance resistance sub-circuit and a signal receiving end which are connected in sequence;
the rear camera is connected with a signal sending end, and the controller is connected with a signal receiving end;
the signal transmitting end is a signal output end with a chip model number of NS 2520;
the signal receiving end is a signal input end with a chip model number of NS 2521;
the transmitting end resistance-capacitance sensing sub-circuit comprises a capacitor C1 and a capacitor C2;
one end of the capacitor C1 is used as an output end of a transmitting-end resistance-capacitance inductor circuit and connected with a coaxial signal line, the other end of the capacitor C1 is respectively connected with one end of an inductor L1 and one end of a resistor R1, the other end of the inductor L1 is respectively connected with the other end of a resistor R1, one end of a resistor R3 and a grounding capacitor C39, the other end of the resistor R3 is respectively connected with a 3V power supply and one end of a resistor R4, and the other end of the resistor R4 is connected with a grounding capacitor C40;
one end of the capacitor C2 is connected with a grounding resistor R5, the other end of the capacitor C2 is respectively connected with one end of a resistor R2 and one end of an inductor L2, and the other end of the resistor R2 is respectively connected with the other end of an inductor L2 and a grounding capacitor C40;
one end of the resistor R3 and the other end of the resistor R4 are used as input ends of the transmitting end capacitance-resistance sensing sub-circuit and are connected with a signal transmitting end;
the receiving end resistance-capacitance sensing sub-circuit comprises a capacitor C26 and a capacitor C28;
one end of the capacitor C26 is used as a signal input end of a receiving end resistance-capacitance electronic circuit and is connected with a coaxial signal line, the other end of the capacitor C26 is respectively connected with one end of a resistor R14 and one end of an inductor L2, the other end of the resistor R14 is respectively connected with the other end of an inductor L2, one end of a grounding capacitor C25, one end of a grounding resistor R13 and one end of a capacitor C27, and the other end of the capacitor C27 is respectively connected with one end of a resistor R15 and one end of a resistor R16;
one end of the capacitor C28 is connected with a ground resistor R28, the other end of the capacitor C28 is connected with one end of an inductor L3 and the other end of a resistor R19, the other end of the inductor L3 is connected with one end of a resistor R19, one end of a ground capacitor C30, one end of a ground resistor R20 and one end of a capacitor C29, and the other end of the capacitor C29 is connected with the other end of a resistor R16 and one end of a resistor R17;
the other end of the resistor 15 and the other end of the resistor R17 are both used as the output end of the receiving end capacitance-resistance sensing sub-circuit to be connected with a signal receiving end.
6. The intelligent rearview mirror of claim 5, wherein the controller is further connected to the coaxial signal line via a filter circuit;
the filter circuit comprises a capacitor CH 83;
one end of the capacitor CH83 is grounded, and the other end of the capacitor CH83 is connected with a 12V power supply; the power connection end of the capacitor CH83 is respectively connected with one end of an inductor LH4 and a grounded capacitor CH84, the other end of the inductor LH4 is respectively connected with one end of a grounded capacitor CH85, a grounded capacitor CH86 and a resistor RH58 and one end of an inductor LH5, the other end of the inductor LH5 is respectively connected with the other end of a resistor RH58, one end of the inductor LH6 and one end of a resistor RH59, and the other end of the inductor LH6 is respectively connected with the other end of a resistor RH59 and a coaxial line welding point AH 1;
the other end of the inductor LH6 is connected to the coaxial line bonding pad AH1 as the output end of the filter circuit.
7. The intelligent rearview mirror of claim 1, wherein the audio module includes an audio input unit and an audio output unit;
the audio input unit comprises three sound pick-up devices, wherein two sound pick-up devices are connected with the controller through a microphone array module FVM, and the other sound pick-up device is used as a Bluetooth telephone microphone;
the audio output unit is a loudspeaker.
8. The intelligent rearview mirror of claim 1, wherein the display touch screen is a 5-point capacitive display touch screen, and the display touch screen has a resolution of 1920 x 320.
9. The intelligent rearview mirror of claim 1, wherein the controller model is anzhi V66;
the communication module comprises a 4G full-network communication unit, a WIFI short-range communication unit and a Bluetooth short-range communication unit;
the model of a main control chip of the 4G full-network communication unit is G35;
the model of a main control chip of the WIFI short-range communication unit is ESP 8089;
the model of a master control chip of the Bluetooth short-range communication unit is I30-702;
the type of the positioning module is G9803;
the storage card inserted into the storage card socket is a TF card.
10. The intelligent rearview mirror of claim 1, further comprising a shock sensor, the shock sensor being connected to the controller;
the model of the vibration sensor is DA 380.
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| CN201921146320.2U CN210733977U (en) | 2019-07-19 | 2019-07-19 | Intelligent rearview mirror |
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| CN201921146320.2U CN210733977U (en) | 2019-07-19 | 2019-07-19 | Intelligent rearview mirror |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113784120A (en) * | 2021-09-30 | 2021-12-10 | 深圳市众安威视技术有限公司 | Vehicle-mounted camera safety detection device |
| CN113968191A (en) * | 2021-11-29 | 2022-01-25 | 深圳市阿拉丁电子有限公司 | Truck monitoring with BSD lane change auxiliary system |
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2019
- 2019-07-19 CN CN201921146320.2U patent/CN210733977U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113784120A (en) * | 2021-09-30 | 2021-12-10 | 深圳市众安威视技术有限公司 | Vehicle-mounted camera safety detection device |
| CN113784120B (en) * | 2021-09-30 | 2024-05-17 | 深圳市众安威视技术有限公司 | Safety detection device for vehicle-mounted camera |
| CN113968191A (en) * | 2021-11-29 | 2022-01-25 | 深圳市阿拉丁电子有限公司 | Truck monitoring with BSD lane change auxiliary system |
| CN113968191B (en) * | 2021-11-29 | 2023-09-05 | 深圳市阿拉丁电子有限公司 | Truck monitoring with BSD lane change assist system |
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