CN217788029U

CN217788029U - Car audio voice control DSP play device and system

Info

Publication number: CN217788029U
Application number: CN202221706047.6U
Authority: CN
Inventors: 张勇
Original assignee: Jiangmen Dechuang Electronic Technology Co ltd
Current assignee: Jiangmen Dechuang Electronic Technology Co ltd
Priority date: 2022-07-04
Filing date: 2022-07-04
Publication date: 2022-11-11
Anticipated expiration: 2032-07-04

Abstract

The utility model relates to a car audio technical field discloses a car audio voice control DSP play device and system, the device include DSP power amplifier unit and with voice control unit, power supply unit, input unit, output unit, crystal oscillator unit and the remote control receiving unit that DSP power amplifier unit is connected, voice control unit with power supply unit is connected. The utility model discloses not only provide the input mode of multiple audio frequency, still provided the DSP power amplifier and carried out the audio frequency and handle to and provide speech control, remote controller control and APP control multiple mode of controlling, and through unified interface definition and panel definition, make the mainboard can the multiple five metals of adaptation and panel, not only improved user's seeing and hearing impression and use the impression, still further reduction manufacturing cost, improved production efficiency.

Description

Car audio voice control DSP play device and system

Technical Field

The utility model relates to a car audio technical field especially relates to a car audio speech control DSP play device and system.

Background

At present, the conventional automobile sound MP3 player has common tone quality effect, does not have DSP sound effect function, the display screen of the player is a common LCD screen, the screen size is small, more configuration and voice control function are lacked in function configuration, and the function of the machine is basically realized by depending on keys on a panel. At present, the DSP sound effect and voice sound control function is only provided for the android large-screen machine and the configuration with the WIFI and the 4G network, and the cost performance is not high.

On the other hand, the five metals and the face-piece panel that current car stereo set used are various, need carry out adjustment many times to the wiring of mainboard and interface to the five metals and the panel of different outward appearances and just can carry out the adaptation to the button on the conventional panel is more, and is loaded down with trivial details to the production of plastic button, and the installation is complicated, and often can appear the unable scheduling problem that kick-backs that key elasticity leads to well, including screen size undersize, the use of giving the user brings inconvenience.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model aims at providing a car stereo set speech control DSP play device and system has supported single machine and two machines of deciding through unified interface definition, supports speech control and remote controller and carries out dual control to the player to have the multiple audio of DSP and support multiple screen size, thereby improved user's seeing and hearing and use the impression.

In a first aspect, the utility model provides a car stereo voice control DSP play device, include:

the system comprises a DSP power amplification unit, a voice control unit, a power supply unit, an input unit, an output unit, a crystal oscillator unit and a remote control receiving unit, wherein the voice control unit, the power supply unit, the input unit, the output unit, the crystal oscillator unit and the remote control receiving unit are connected with the DSP power amplification unit;

the power supply unit comprises an external power supply and a voltage adjusting unit connected with the external power supply, and the voltage adjusting unit is connected with the DSP power amplification unit;

the input unit comprises a radio input unit, an external input unit, a microphone input unit and a play input unit, the radio input unit, the external input unit, the microphone input unit and the play input unit are respectively connected with the DSP power amplification unit, and the microphone input unit is connected with the voice control unit;

the output unit comprises an audio output unit and a display output unit, and the audio output unit and the display output unit are respectively connected with the DSP power amplification unit.

Furthermore, the DSP power amplifier unit comprises an encoding and decoding unit, a Bluetooth unit and a frequency modulation receiving unit, wherein the Bluetooth unit and the frequency modulation receiving unit are connected with the encoding and decoding unit, and the encoding and decoding unit is connected with the input unit.

Furthermore, the voltage regulation unit comprises a key detection input unit, a direct current voltage input unit, a first voltage stabilization input unit and a second voltage stabilization input unit, the key detection input unit, the direct current voltage input unit and the first voltage stabilization input unit are connected with the DSP power amplification unit, and the second voltage stabilization input unit is connected with the voice control unit.

Furthermore, the voice control unit comprises a microphone control unit, a data communication unit and an internal power supply which are connected with each other, the internal power supply is connected with the second voltage-stabilizing input unit, and the microphone control unit is connected with the microphone input unit.

Furthermore, the power supply unit further comprises an ignition lock switch and a USB quick charging unit, the ignition lock switch is respectively connected with the external power supply and the key detection input unit, and the USB quick charging unit is connected with the second voltage stabilization input unit.

Furthermore, the radio reception input unit comprises a DAB digital radio reception unit and a waveband radio reception unit, and the play input unit comprises an SD play input unit and a USB play input unit.

Furthermore, the audio output unit comprises a pre-amplification unit, and a power amplifier output unit and an RCA output unit which are connected with the pre-amplification unit.

Furthermore, the display output unit comprises a display driving unit, and an LCD display screen and a key control unit which are connected with the display driving unit, the display driving unit is connected with the DSP power amplification unit, the key control unit is respectively connected with the display driving unit and the DSP power amplification unit, the LCD display screen comprises 8 COM public ends and 32 SEG scanning ends, and the size of the LCD display screen is 6.95 inches in length or 5 inches in length.

In a second aspect, the utility model provides a car stereo set speech control DSP playback system, the system includes as above car stereo set speech control DSP play device, playback system still includes remote controller and data terminal, the remote controller with data terminal with DSP play device is connected.

Furthermore, the remote controller is connected with the remote control receiving unit, the data terminal is connected with the DSP power amplification unit, and the data terminal comprises a PC host and an intelligent mobile phone.

Above-mentioned the utility model provides a car stereo voice control DSP play device and system. The device has not only provided DSP audio regulatory function, still support speech control and remote controller control and cell-phone APP control to come to operate car audio, multiple control mode has been provided for the user, user operation's convenience has been improved, it decides the machine and two quick-witted sizes to have still unified messenger's mainboard adaptation simultaneously to interface definition simultaneously, and the LCD screen of multiple size has been provided, user's seeing and hearing impression has been improved, car audio's manufacturing cost has been reduced, this is very meaningful to current car audio technical field.

Drawings

Fig. 1 is a schematic structural diagram of a car audio voice control DSP playing device provided in an embodiment of the present invention;

fig. 2 is a schematic structural view of the power supply unit 1 in fig. 1;

fig. 3 is another structural schematic diagram of the power supply unit 1 in fig. 1;

fig. 4 is a schematic diagram of the structure of the voice control unit 3 in fig. 1;

FIG. 5 is a set of speech recognition output commands of the speech control unit 3 of FIG. 1;

fig. 6 is a schematic structural diagram of the DSP power amplifier unit 2 in fig. 1;

fig. 7 is a schematic diagram of a first structure of the output unit 5 in fig. 1;

fig. 8 is a schematic diagram of a second structure of the output unit 5 in fig. 1;

fig. 9 is a schematic structural diagram of a car audio voice control DSP playback system provided by an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, a first embodiment of the present invention provides a car audio voice control DSP playing device, which includes: the device comprises a DSP power amplification unit 2, a voice control unit 3 connected with the DSP power amplification unit 2, a power supply unit 1, an input unit 4, an output unit 5, a crystal oscillator unit 6 and a remote control receiving unit 7, wherein the voice control unit 3 is connected with the power supply unit 1.

Referring to fig. 2, a power supply unit 1 in the present embodiment includes an external power supply 11 and a voltage adjusting unit 12 connected thereto, wherein the external power supply 11 may preferably be an input of a direct current 12V, the voltage adjusting unit 12 is further configured to adjust a voltage of the external power supply 11 so as to stably supply power to the DSP power amplification unit 2 and the voice control unit 3, the structure of the voltage adjusting unit 12 is as shown in fig. 3, and the power supply unit 1 further includes a key detection input unit 121, a direct current voltage input unit 122, a first voltage stabilization input unit 123 and a second voltage stabilization input unit 124, and an ignition lock switch 13 and a USB quick charging unit 14, wherein the ignition lock switch 13 is connected between the external power supply 11 and the key detection input unit 121, and is used for determining whether a car key is on a power supply gear of a car audio by determining the ignition lock switch 13 through the key detection input unit 121, so as to determine whether to start the car audio.

The dc voltage input unit 122 and the first voltage-stabilizing input unit 123 are respectively connected between the external power source 11 and the DSP power amplifier unit 2, the dc voltage input unit 122 converts the external power source 11 from 12V to dc 5V to supply power to the DSP power amplifier unit 2, and stabilizes the 12V voltage of the external power source 11 through the first voltage-stabilizing input unit 123, so that it provides stable 5V power supply to the DSP power amplifier unit 2, and the preferred first voltage-stabilizing input unit 123 may use an HT7550 voltage-stabilizing chip.

The second voltage-stabilizing input unit 124 is connected to the external power source 11, and regulates the voltage of 12V inputted from the outside to 5V-2.5A, and then is connected to the USB fast-charging unit 14 and the voice control unit 3, so as to not only provide a stable adaptive voltage for the voice control unit 3, but also enable the device to have a USB fast-charging function, thereby further improving the convenience of users.

The input unit 4 in this embodiment includes a radio input unit 41, an external input unit 42, a microphone input unit 43 and a play input unit 44, where the radio input unit 41 includes a DAB digital radio unit 411 and a band radio unit 412, the playing device in this embodiment provides multiple audio input modes, the DAB digital radio unit 411 provides a digital radio function for the car audio, and the band radio unit 412 provides a radio function with multiple bands, preferably, the present embodiment uses a chip combination mode of SI4730 and 4745, provides a full-band function by a CMOS technology, can cope with a complex electromagnetic environment in the car, and has a high anti-interference capability.

Further, the external input unit 42 is an AUX external input, that is, is connected to the external input device through an AUX interface, so that the car audio supports playing of audio data in the external device, and the playing input unit 44 further includes an SD playing input unit 441 and a USB playing input unit 442, that is, the playing device in this embodiment not only supports playing of audio of the external device connected through the AUX interface, but also plays of audio data stored in the SD card and the USB device, where the SD playing input unit 441 provides an SD card slot, and the USB playing input unit 442 provides a USB interface to support playing of audio of the SD card and the USB device, and these different audio input modes greatly facilitate the selection and use of the user, and also provide a better use experience for the user.

The microphone input unit 43 in the input unit 4 is used for receiving a voice command input through a MIC microphone, the voice control function in this embodiment is mainly implemented by the voice control unit 3 and the DSP power amplification unit 2, please refer to fig. 4, where the voice control unit 3 includes a microphone control unit 31, a data communication unit 32 and an internal power supply 33, where the internal power supply 33 is connected to a second voltage-stabilizing input power supply 124, so that the external power supply 11 supplies voltage-stabilizing power to the voice control unit 3, and a plurality of voice commands are stored in the voice control unit 3 in advance, and these commands can be used as a command set to perform operation control on the car audio, and as shown in fig. 5, it is preferable to preset 62 english voice commands, and certainly, it is also possible to add or delete voice commands and set voice commands in other languages, and this is only described as an embodiment in a preferable manner.

When the voice control is used, firstly, a host is awakened through an awakening command, then, the host starts to sound, the emitted sound is received and transmitted to the DSP power amplification unit 2 through an MIC microphone of the microphone input unit 43, when the DSP power amplification unit 2 receives information transmitted by the MIC microphone, the emitted sound is transmitted to the data communication unit 32 in the voice control unit 3 through a serial port communication mode, the DSP power amplification unit 2 and the data communication unit 32 both support the serial port communication modes of M-UART-RX and M-UART-TX, the voice control unit 3 can transmit a control command to the DSP power amplification unit 2 through the data communication unit 32 according to the content of the voice command input by the MIC microphone to realize corresponding functions, the microphone control unit 31 in the voice control unit 3 can also control the MIC microphone in the microphone input unit 43, the voice command set shown in the figure 5 is taken as an example, when a user is driving or is inconvenient to carry out manual operation, the host can be called "Hi, then, a USB play mode or an EQ play mode is realized through a sound emission mode, and the POP mode is used for improving the convenience of a vehicle user when the vehicle is used.

The DSP power amplifier unit 2 in this embodiment is different from a common power amplifier that only has a simple codec function, but embeds multiple functions such as codec, bluetooth, FM reception, and the like, and integrates these functions, which can only be implemented by adding multiple functional modules, compared with the prior art, thereby further reducing the manufacturing cost. Referring to fig. 6, the DSP power amplifier unit 2 includes a FM receiving unit 21 and a bluetooth unit 22, and the FM receiving unit 21 and the bluetooth unit 22 are respectively connected to the codec unit 23, that is, not only the audio data input through the input unit 4, but also the audio received through FM and bluetooth can be processed by the codec unit 23 to improve the sound quality, because the DSP power amplifier unit 2 provides multiple types of codecs, such as encoder TRE, encoder RASS, encoder VOL, etc., not only the volume can be adjusted, but also the high and low sound can be adjusted, and multiple sound effect types can be switched, such as pop, jazz, rock, etc., an a7900DSP chip is preferably used as the DSP power amplifier unit 2 in this embodiment.

For the audio data processed by the DSP power amplification unit 2 to be output through the output unit 5, and the output unit 5 further includes the audio output unit 51 and the display output unit 52, please refer to fig. 7, where the audio output unit 51 includes a pre-amplification unit 511, and a power amplification output unit 512 and an RCA output unit 513 respectively connected to the pre-amplification unit 511, in this embodiment, 4CH4 sets of audio outputs are adopted, the audio is output to the pre-amplification unit 511 for pre-driving amplification, and high-frequency amplified low-frequency components are filtered out, so as to make up for the sound perception defect caused by the woofer accessory, the audio amplified by the pre-driving may be played through the power amplification output unit 512 and the RCA output unit 513, preferably, TL084C is adopted as the pre-amplification unit 511, 7388-Speaker of 4 × 25w is used as the power amplification output unit 512, and the RCA output unit 513 includes 4 sets of RCA output interfaces and 2 sets of subwoofer outputs, so as to further improve the sound quality effect of the output audio, and improve the hearing experience of the user.

Referring to fig. 8, the display output unit 52 in this embodiment includes a display driving unit 521, and an LCD display 522 and a key control unit 523 connected to the display driving unit 521, where the display driving unit 521 is connected to the DSP power amplifying unit 2, the key control unit 523 is further connected to the display driving unit 521 and the DSP power amplifying unit 2, and the key control unit 523 is mainly used to control the car audio through keys on the display panel.

The device uses HT1622 or HT1623LCD driver chip as display driver 521, thereby drive LCD display 522, the hardware of present car stereo is roughly divided into 3 types, including double-set hardware, tortoise shell hardware and single-set hardware, because the interface position of different hardware is different, in order to adapt to different hardware types, often need continuous adjustment mainboard interface, bring very big inconvenience for production installation, for this reason, this embodiment makes these three types of most commonly used hardware, power source, output interface, power amplifier position, RCA output interface etc. all make unified interface definition, thereby make a mainboard just can general whole hardware, and to the panel of multiple different outward appearances, this embodiment has also unified the panel, two kinds of LCD display screens of single scaling-off and double scaling-off have been set up to the panel, through the unified mode of interface and panel, very big improvement play device's production efficiency, unnecessary waste has been reduced.

Because the interface and the panel are defined uniformly in this embodiment, the main board of the device can be adapted to displays of various sizes, and for the current single-set machine and double-set machine, we select LCD displays 522 of two sizes, wherein the single-set machine uses a 5-inch display, and the double-set machine uses a 6.95-inch display, and it can be seen that the size of the display screen adopted in this embodiment is larger than that of a conventional display screen.

In order to improve the display effect and reduce the production cost, the LCD display 522 in this embodiment is produced by using the VA technology, and the LCD display 522 is different from the conventional LCD display in that the commonly used LCD display is generally a 13-pin jack, in which the first 5 pins are COM and the last 8 pins are SEG, that is, the on-screen display of the display screen is realized by a truth table formed by 5 COM and 8 SEG, while the LCD display 522 of this embodiment is to perform the content display by a truth table formed by 8 COM common terminals and 32 SEG scanning terminals, obviously, the display used by the apparatus is more complicated in display logic, the displayed content display is more diverse and flexible, the display content and the display effect are improved, and thus, the user feels more comfortable to use.

In order to improve the audio processing effect and the convenience of use of the playing device, a crystal oscillator unit 6 and a remote control receiving unit 7 are particularly arranged, wherein the crystal oscillator unit 6 is connected to the crystal oscillator oscillation of the DSP power amplifier unit 2 and obtains an electric signal with high-precision frequency through the mechanical resonance of a piezoelectric vibrating crystal, so as to provide a stable clock signal for the DSP power amplifier unit 2, and the remote control receiving unit 7 is connected to the DSP power amplifier unit 2 so as to allow a user to operate the playing device from the outside through a remote controller, so that multiple operation modes are provided for the user to select, and the convenience of use of the user is further improved.

For the remote control receiving unit 7, the following describes other operation modes except for the panel touch control and the voice control in this embodiment with reference to the playing system, please refer to fig. 9, a second embodiment of the present invention provides a car audio voice control DSP playing system, which includes a remote controller 20 and a data terminal 30 in addition to the above-mentioned playing device, wherein the remote controller 20 and the data terminal 30 are both connected to the playing device for controlling the playing device.

The remote controller 20 in this embodiment is connected to the remote control receiving unit 7 to control the DSP power amplifier unit 2, and two different remote controllers 20 are provided, one is a relatively high-end remote controller 20, which facilitates user operation through composite keys, and preferably, an independent programming combination of keys is provided for a user to facilitate personalized key operation, and meanwhile, a common type remote controller 20 is provided, which has many keys and cannot perform independent programming, thereby reducing the cost of the playing system and improving the performance-to-price ratio of the playing device.

Further, data terminal 30 in this embodiment can be PC host computer or smart mobile phone, through install APP on data terminal 30, and bluetooth unit 22 in DSP power amplifier unit 2 is connected to through data terminal 30's bluetooth function lug connection, thereby realize controlling play device, that is, the panel button has been adopted in this embodiment, voice control, remote controller control and the multiple control mode of cell-phone APP control are controlled play device and are controlled, thereby select different control modes according to different users' in service behavior and use occasion, provide more individualized operation mode for the user, not only improved user's seeing and hearing impression, also very big improvement user's operation convenience.

To sum up, the embodiment of the utility model provides a car stereo set speech control DSP play device and system, the device include DSP power amplifier unit and with speech control unit, power supply unit, input unit, output unit, crystal oscillator unit and the remote control receiving unit that DSP power amplifier unit is connected, speech control unit with power supply unit is connected. This device has improved the tone quality effect that the audio frequency was handled through the DSP power amplifier, digital radio is provided, full wave band radio reception, FM antenna reception, multiple audio frequency reception broadcast modes such as SD broadcast and USB broadcast, except that conventional panel button is controlled, this embodiment has still provided the speech control function, and can also carry out multiple control modes such as play device controls through remote controller and APP, interface and panel have still been unified simultaneously, the display screen that provides multiple size carries out the adaptation, not only production cost has been reduced, production efficiency is improved, and provide better high-quality seeing and hearing impression for the user, the convenience of user's use has been improved, more individualized use experience is provided for the user.

The embodiments in the present specification are described in a progressive manner, and all the embodiments are directly referred to the same or similar parts, and each embodiment is mainly described as different from the other embodiments. In particular, the system embodiment is substantially similar to the apparatus embodiment, so the description is simple, and reference may be made to the partial description of the apparatus embodiment for relevant points. It should be noted that, the technical features of the embodiments may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express some preferred embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for those skilled in the art, without departing from the technical principle of the present invention, several modifications and substitutions can be made, and these should also be regarded as the protection scope of the present application. Therefore, the protection scope of the present patent shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a car stereo set speech control DSP play device which characterized in that includes:

2. The car audio voice-controlled DSP playing device according to claim 1, wherein the DSP power amplifier unit comprises a coding and decoding unit, a Bluetooth unit and a frequency modulation receiving unit which are connected with the coding and decoding unit, and the coding and decoding unit is connected with the input unit.

3. The voice-controlled DSP broadcasting device for car audio according to claim 2, wherein the voltage adjusting unit comprises a key detecting input unit, a dc voltage input unit, a first voltage-stabilizing input unit and a second voltage-stabilizing input unit, the key detecting input unit, the dc voltage input unit and the first voltage-stabilizing input unit are connected to the DSP power amplifying unit, and the second voltage-stabilizing input unit is connected to the voice control unit.

4. The car audio voice control DSP playing device according to claim 3, wherein the voice control unit comprises a microphone control unit, a data communication unit and an internal power supply, the microphone control unit, the data communication unit and the internal power supply are connected with each other, the internal power supply is connected with the second voltage stabilization input unit, and the microphone control unit is connected with the microphone input unit.

5. The device for controlling the DSP through voice of car audio according to claim 4, wherein the power supply unit further comprises an ignition lock switch and a USB fast charging unit, the ignition lock switch is respectively connected with the external power supply and the key detection input unit, and the USB fast charging unit is connected with the second voltage stabilization input unit.

6. The car audio voice control DSP playing device according to claim 1, wherein the sound receiving input unit comprises a DAB digital sound receiving unit and a waveband sound receiving unit, and the playing input unit comprises an SD playing input unit and a USB playing input unit.

7. The car audio voice control DSP playing device of claim 1, wherein the audio output unit includes a pre-amplification unit, and a power amplifier output unit and an RCA output unit connected to the pre-amplification unit.

8. The car audio voice control DSP playing device according to claim 1, wherein the display output unit comprises a display driving unit, and an LCD display screen and a key control unit which are connected with the display driving unit, the display driving unit is connected with the DSP power amplification unit, the key control unit is respectively connected with the display driving unit and the DSP power amplification unit, the LCD display screen comprises 8 COM public ends and 32 SEG scanning ends, and the size of the LCD display screen is 6.95 inches double-fixed or 5 inches single-fixed.

9. A car audio voice control DSP playback system, characterized in that the playback system comprises a car audio voice control DSP playback device according to any one of claims 1 to 8, the playback system further comprises a remote controller and a data terminal, the remote controller and the data terminal are connected with the DSP playback device.

10. The car audio voice control DSP playback system of claim 9, wherein the remote controller is connected to the remote control receiving unit, the data terminal is connected to the DSP power amplification unit, and the data terminal includes a PC host and a smart phone.