CN211457321U - Harmless repacking vehicle-mounted bluetooth sound - Google Patents
- ️Tue Sep 08 2020
技术领域technical field
本实用新型涉及蓝牙播放音响设备技术领域，具体领域为带FM发射与车载音响同步播放功能的无损改装(车载)蓝牙音响。The utility model relates to the technical field of bluetooth playback audio equipment, in particular to a non-destructive modified (vehicle-mounted) bluetooth audio with the function of FM transmission and synchronous playback of vehicle audio.
背景技术Background technique
随着人们生活水平的不断提高，对音乐的欣赏水平大幅提升，对音质和音响效果表现的要求越来越高，汽车自带的较为低端的音响效果的表现需要提升，同时对功能较少的系统需要升级以满足人们的需求，因此对部分音质或功能不能满足要求的原(车载)音响进行合理的升级改造得到越来越广泛的应用。With the continuous improvement of people's living standards, the level of appreciation for music has been greatly improved, and the requirements for sound quality and sound effect performance have become higher and higher. The system needs to be upgraded to meet people's needs, so the reasonable upgrade and transformation of the original (vehicle) audio that cannot meet the requirements of some sound quality or functions has been more and more widely used.
目前现有(车载)音响的升级改造，主要包括以下几种：At present, the upgrade and transformation of the existing (vehicle) audio mainly include the following:
一、有损改造。通过对原有(车载)音响系统进行拆解、更换、修补等手段来获得音质的提升，包括但不仅限于：更换原(车载)播放器使之支持更多的播放方式和更好获得的解码支持，增加蓝牙或者U盘以及TF卡等功能；额外增加音响功放系统单元，来获取更大的输出功率；更换扬声器系统，采用更好的高音和低音喇叭系统来提升音质；对喇叭腔体进行改造、密封，来达到更好的声音效果和高低音表现等等，这种改装的方式优点是效果明显，确认达到要求后就基本固定。1. Detrimental transformation. The sound quality can be improved by dismantling, replacing and repairing the original (car) audio system, including but not limited to: replacing the original (car) player to support more playback methods and better decoding Support, add functions such as Bluetooth or U disk and TF card; add additional audio amplifier system units to obtain greater output power; replace the speaker system and use a better treble and woofer system to improve the sound quality; Modification, sealing, to achieve better sound effects and high and low bass performance, etc. The advantage of this modification method is that the effect is obvious, and it is basically fixed after confirming that the requirements are met.
二、对播放系统进行简单的无损升级改造。对于一些不带蓝牙功能，只有卡带或者CD播放方式的原(车载)播放系统，1、使用AUX有线音频输入方式，通过外接播放器来扩展输入音源。2、使用带蓝牙功能的FM发射转接设备，通过接收手机蓝牙音频然后转发到原车FM接收系统，来达到无损改造的目的，这也是目前比较常见的无损改造方式。2. Simple non-destructive upgrade and transformation of the playback system. For some original (car) playback systems that do not have Bluetooth function and only have cassette or CD playback mode, 1. Use AUX wired audio input mode to expand the input audio source through an external player. 2. Use the FM transmission switching device with Bluetooth function to achieve the purpose of non-destructive transformation by receiving the Bluetooth audio of the mobile phone and then forwarding it to the original car FM receiving system. This is also a relatively common non-destructive transformation method at present.
现有改装的缺点：Disadvantages of existing retrofits:
一、对于第一种有损改造的缺点：1、属于有损改装，不可避免的会对原有的(车载)线路或者外观有所影响；2、有一定的风险，更换的播放系统和功放以及喇叭系统需要匹配，不同的品牌效果不尽相同，即使高端品牌可能也存在调校的问题，同时还需要对喇叭腔体的改造来整体配合，否则如果出现短板就会前功尽弃，效果达不到预期；3、成本较高，由于涉及升级更换，需要额外付出购买成本，原更换下来的(车机)系统也造成闲置，不符合环保理念，并且再加上安装人工调试费，整体成本较高。1. Disadvantages of the first kind of lossy modification: 1. It is a lossy modification, which will inevitably affect the original (vehicle) circuit or appearance; 2. There is a certain risk, and the replacement of the playback system and power amplifier And the speaker system needs to be matched. Different brands have different effects. Even high-end brands may have problems of adjustment. At the same time, it is necessary to transform the speaker cavity to cooperate as a whole. As expected; 3. The cost is relatively high. Due to the upgrade and replacement involved, additional purchase costs are required. The original (vehicle) system that was replaced is also idle, which does not conform to the concept of environmental protection. In addition to the installation and manual debugging fees, the overall cost is relatively high. high.
二、对于上述对播放系统进行简单的无损升级改造的缺点：1、通过AUX音频输入的方式：第一，线路仍然可能会外露影响美观，并且播放设备的摆放和供电问题也不好解决；第二，由于共地问题会带来较大的底噪，严重影响听感；2、通过蓝牙接收FM转发的方式的缺点：虽然扩展了原(车载)播放系统的音源输入，可以通过手机蓝牙连接播放并且完全不影响原来功能和线路，但是对原来的(车载)音响系统硬件并无提升，如果原来(车载)的音响效果本身不太理想的话，最终音质仍然完全受原(车载)音响系统的制约。2. For the above-mentioned shortcomings of simple non-destructive upgrade and transformation of the playback system: 1. The way of AUX audio input: First, the line may still be exposed and affect the appearance, and the placement and power supply of the playback equipment are not easy to solve; Second, the common ground problem will bring a large noise floor, which will seriously affect the sense of hearing; 2. The disadvantage of receiving FM forwarding through Bluetooth: Although the audio input of the original (vehicle) playback system is expanded, it can be transmitted through the Bluetooth of the mobile phone. The connection and playback does not affect the original functions and lines at all, but the hardware of the original (car) audio system does not improve. If the original (car) sound effect itself is not ideal, the final sound quality is still completely affected by the original (car) audio system. constraints.
实用新型内容Utility model content
本实用新型的目的在于提供一种不改变原(车载)音响系统的基础上，通过自带的音响硬件来补充原(车载)音响效果的不足，利用本身集成接收和转发功能，本机音响协同原(车载)音响系统共同同步工作，相当于硬件增加了四个喇叭的效果，达到通过无损改装来提升音效的目的带FM发射与车载音响同步播放功能的无损改装(车载)蓝牙音响，以解决背景技术中提到的问题。The purpose of this utility model is to provide a sound system that does not change the original (vehicle-mounted) sound system, supplement the insufficiency of the original (vehicle-mounted) sound effect through the built-in sound hardware, and use its own integrated receiving and forwarding functions to synergize the sound of the machine. The original (car) audio system works together synchronously, which is equivalent to the effect of adding four speakers to the hardware to achieve the purpose of improving the sound effect through non-destructive modification. The non-destructive modification (car) Bluetooth audio with FM transmission and car audio synchronization playback function to solve the problem Problems mentioned in the background art.
为实现上述目的，本实用新型提供如下技术方案：一种无损改装车载蓝牙音响，包括主微控制器MCU和供电单元，所述主微控制器MCU用以接收和传送面板按键或红外遥控发出的播放控制指令，所述供电单元为无损改装车载蓝牙音响中用电单元提供电源，所述微控制器MCU电连接有音频播放单元、音频/音量处理单元、FM发射/延时处理单元，所述音频/音量处理单元电连接有音频功放单元，所述音频功放单元电连接有扬声器单元；In order to achieve the above-mentioned purpose, the present utility model provides the following technical solutions: a non-destructive retrofit car bluetooth audio, including a main microcontroller MCU and a power supply unit, the main microcontroller MCU is used to receive and transmit panel buttons or infrared remote control. Playing control instructions, the power supply unit provides power for the power consumption unit in the non-destructive modified car bluetooth audio, and the microcontroller MCU is electrically connected with an audio playback unit, an audio/volume processing unit, and an FM transmission/delay processing unit. The audio/volume processing unit is electrically connected with an audio power amplifier unit, and the audio power amplifier unit is electrically connected with a speaker unit;
所述FM发射/延时处理单元包括分微控制器MCU，所述分微控制器MCU与所述主微控制器MCU电连接，所述分微控制器MCU电连接有FM发射芯片、DSP延时处理芯片和调节旋钮，所述DSP延时处理芯片电连接有音效/音量控制单元。主微控制器MCU用以接收面板按键或红外遥控发出的播放控制指令，通过输入/输出接口控制所述音频播放单元播放相应的音源，其中音源可来自于蓝牙、TF卡或AUX，所述音频播放单元播放的音频信号进入所述音频/音量处理单元，所述主微控制器MCU通过I2C总线控制所述音频/音量处理单元，同时音频信号进入所述FM发射/延时处理单元向原车载音响设备发射FM信号，所述主微控制器MCU通过DSP与所述分微控制器MCU通信，所述分微控制器MCU通过I2C总线控制所述FM发射芯片和所述DSP延时处理芯片，经所述DSP延时处理芯片和所述音效/音量控制单元处理后的信号进入所述音频功放单元，然后在所述扬声器单元发声，最后达到本机和原车载音响同步发声，相当于原车载系统硬件增加了喇叭单元，使原车载音响音效明显提升。The FM transmit/delay processing unit includes a sub-microcontroller MCU, the sub-microcontroller MCU is electrically connected to the main microcontroller MCU, and the sub-microcontroller MCU is electrically connected with an FM transmitter chip, a DSP delay chip, and a A time processing chip and an adjustment knob are provided, and the DSP delay processing chip is electrically connected with a sound effect/volume control unit. The main microcontroller MCU is used to receive the playback control instructions sent by the panel buttons or the infrared remote control, and control the audio playback unit to play the corresponding audio source through the input/output interface, wherein the audio source can come from Bluetooth, TF card or AUX, and the audio The audio signal played by the playback unit enters the audio/volume processing unit, the main microcontroller MCU controls the audio/volume processing unit through the I2C bus, and the audio signal enters the FM transmission/delay processing unit to the original car audio system. The device transmits FM signals, the main microcontroller MCU communicates with the sub-microcontroller MCU through the DSP, and the sub-microcontroller MCU controls the FM transmitter chip and the DSP delay processing chip through the I2C bus. The signal processed by the DSP delay processing chip and the sound effect/volume control unit enters the audio power amplifier unit, and then emits sound in the speaker unit, and finally achieves the synchronous sound of the local machine and the original car audio, which is equivalent to the original car system. The hardware adds a speaker unit, which significantly improves the original car audio effect.
优选的，所述微控制器MCU上设置有红外接收单元、按键面板单元、指示灯单元和蜂鸣器单元。Preferably, the microcontroller MCU is provided with an infrared receiving unit, a key panel unit, an indicator light unit and a buzzer unit.
优选的，所述供电单元为12V可充电电池组。Preferably, the power supply unit is a 12V rechargeable battery pack.
优选的，所述扬声器单元由左声道组件和右声道组件构成，所述左声道组件和所述右声道组件分别由高音喇叭和低音喇叭组成。Preferably, the speaker unit is composed of a left channel component and a right channel component, and the left channel component and the right channel component are respectively composed of a tweeter and a woofer.
与现有技术相比，本实用新型的有益效果是：一种无损改装车载蓝牙音响，通过主微控制器MCU接收面板按键或红外遥控发出的播放控制指令，主微控制器MCU再通过输入/输出接口控制音频播放单元播放相应的音源，音频播放单元播放的音频信号进入音频/音量处理单元，主微控制器MCU通过I2C总线控制音频/音量处理单元，同时音频信号进入FM发射/延时处理单元向原车载音响设备发射FM信号，主微控制器MCU通过DSP与分微控制器MCU通信，分微控制器MCU通过I2C总线控制FM发射芯片和DSP延时处理芯片，经DSP延时处理芯片和音效/音量控制单元处理后的信号进入音频功放单元，然后在扬声器单元发声，最后达到本机和原车载音响同步发声，相当于原车载系统硬件增加了喇叭单元，使原车载音响音效明显提升。Compared with the prior art, the beneficial effect of the utility model is as follows: a non-destructive modification of the car bluetooth audio system, the main microcontroller MCU receives the playback control instructions sent by the panel buttons or the infrared remote control, and the main microcontroller MCU then inputs/ The output interface controls the audio playback unit to play the corresponding audio source, the audio signal played by the audio playback unit enters the audio/volume processing unit, the main microcontroller MCU controls the audio/volume processing unit through the I2C bus, and the audio signal enters the FM transmission/delay processing. The unit transmits FM signal to the original car audio equipment, the main microcontroller MCU communicates with the sub-microcontroller MCU through the DSP, and the sub-microcontroller MCU controls the FM transmitter chip and the DSP delay processing chip through the I2C bus. The signal processed by the sound effect/volume control unit enters the audio power amplifier unit, and then emits sound in the speaker unit, and finally achieves the synchronous sound of the machine and the original car audio, which is equivalent to adding a speaker unit to the hardware of the original car system, which significantly improves the sound effect of the original car audio.
本实用新型，带FM发射与车载音响同步播放功能的无损改装(车载)蓝牙音响，终端用户可根据需要将其放到任意位置，调节与原(车载)音响系统的同步即可使用，在较大程度上节省了时间成本，同时减少更换下来的配件闲置，实用性强；The utility model relates to a non-destructively modified (vehicle-mounted) bluetooth audio with the function of FM transmission and the synchronous playback of the vehicle-mounted audio system. The end user can place it in any position as required, and adjust the synchronization with the original (vehicle-mounted) audio system to be used. It saves time and cost to a large extent, and at the same time reduces the idleness of replaced accessories, and has strong practicability;
本实用新型，不仅可用于车载，还可用于家庭以及其他场合的音响系统中。The utility model can not only be used for vehicle, but also can be used in the audio system of home and other occasions.
附图说明Description of drawings
图1为本实用新型无损改装车载蓝牙音响工作示意图。Fig. 1 is the working schematic diagram of the non-destructive modification of the car bluetooth audio of the utility model.
具体实施方式Detailed ways
下面将结合本实用新型实施例中的附图，对本实用新型实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本实用新型一部分实施例，而不是全部的实施例。基于本实用新型中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本实用新型保护的范围。The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.
实施例：Example:
请参阅图1，本实用新型提供一种技术方案：一种无损改装车载蓝牙音响，包括主微控制器MCU和供电单元，所述主微控制器MCU用以接收和传送面板按键或红外遥控发出的播放控制指令，所述供电单元为无损改装车载蓝牙音响中用电单元提供电源，所述微控制器MCU电连接有音频播放单元、音频/音量处理单元、FM发射/延时处理单元，所述音频/音量处理单元电连接有音频功放单元，所述音频功放单元电连接有扬声器单元；Please refer to FIG. 1 , the present utility model provides a technical solution: a non-destructive modified car Bluetooth audio, including a main microcontroller MCU and a power supply unit, the main microcontroller MCU is used to receive and transmit panel buttons or infrared remote control. The power supply unit provides power for the power consumption unit in the non-destructive modified car bluetooth audio, and the microcontroller MCU is electrically connected with an audio playback unit, an audio/volume processing unit, and an FM transmission/delay processing unit, so The audio/volume processing unit is electrically connected with an audio amplifier unit, and the audio amplifier unit is electrically connected with a speaker unit;
FM发射/延时处理单元包括分微控制器MCU，所述分微控制器MCU与所述主微控制器MCU电连接，所述分微控制器MCU电连接有FM发射芯片、DSP延时处理芯片和调节旋钮，所述DSP延时处理芯片电连接有音效/音量控制单元。The FM transmit/delay processing unit includes a sub-microcontroller MCU, the sub-microcontroller MCU is electrically connected with the main microcontroller MCU, and the sub-microcontroller MCU is electrically connected with an FM transmitter chip and a DSP delay processing unit. A chip and an adjustment knob, and the DSP delay processing chip is electrically connected with a sound effect/volume control unit.
其工作过程为：主微控制器MCU用以接收面板按键或红外遥控发出的播放控制指令，通过输入/输出接口控制所述音频播放单元播放相应的音源，其中音源可来自于蓝牙、TF卡或AUX，所述音频播放单元播放的音频信号进入所述音频/音量处理单元，所述主微控制器MCU通过I2C总线控制所述音频/音量处理单元，同时音频信号进入所述FM发射/延时处理单元向原车载音响设备发射FM信号，所述主微控制器MCU通过DSP与所述分微控制器MCU通信，所述分微控制器MCU通过I2C总线控制所述FM发射芯片和所述DSP延时处理芯片，经所述DSP延时处理芯片和所述音效/音量控制单元处理后的信号进入所述音频功放单元，然后在所述扬声器单元发声，最后达到本机和原车载音响同步发声，相当于原车载系统硬件增加了喇叭单元，使原车载音响音效明显提升。Its working process is as follows: the main microcontroller MCU is used to receive the playback control instructions sent by the panel buttons or infrared remote control, and control the audio playback unit to play the corresponding audio source through the input/output interface, where the audio source can come from Bluetooth, TF card or AUX, the audio signal played by the audio playback unit enters the audio/volume processing unit, the main microcontroller MCU controls the audio/volume processing unit through the I2C bus, and the audio signal enters the FM transmit/delay The processing unit transmits FM signals to the original car audio equipment, the main microcontroller MCU communicates with the sub-microcontroller MCU through the DSP, and the sub-microcontroller MCU controls the FM transmitter chip and the DSP delay through the I2C bus. The time processing chip, the signal processed by the DSP delay processing chip and the sound effect/volume control unit enters the audio power amplifier unit, and then emits sound in the speaker unit, and finally achieves the synchronous sound of the local machine and the original car audio, It is equivalent to adding a speaker unit to the hardware of the original vehicle system, which significantly improves the sound effect of the original vehicle audio system.
本实用新型，不仅可用于车载，还可用于家庭以及其他场合的音响系统中。The utility model can not only be used for vehicle, but also can be used in the audio system of home and other occasions.
具体而言，所述微控制器MCU上设置有红外接收单元、按键面板单元、指示灯单元和蜂鸣器单元。Specifically, the microcontroller MCU is provided with an infrared receiving unit, a key panel unit, an indicator light unit and a buzzer unit.
具体而言，所述供电单元为12V可充电电池组。Specifically, the power supply unit is a 12V rechargeable battery pack.
具体而言，所述扬声器单元由左声道组件和右声道组件构成，所述左声道组件和所述右声道组件分别由高音喇叭和低音喇叭组成。Specifically, the speaker unit is composed of a left channel component and a right channel component, and the left channel component and the right channel component are respectively composed of a tweeter and a woofer.
将无损改装车载蓝牙音响分别安装在原车载音响效果较差和原(车载)音响效果较好的音响系统上测试，均对原(车载)音响音效有所提升，提升效果比较明显。The non-destructive modified car bluetooth audio was installed on the audio system with poor original car audio effect and the original (car) audio effect with better sound effect.
由于本机具有FM同步发射功能，以下测试分别在原音效较差(车载)音响系统和原音效较好的(车载)音响系统以及经过有损改装音响的(车载)音响系统，分别在本机静音原(车载)音响单独播放、本机关闭FM发射单独播放、本机协同原(车载)音响共同播放这几种情况下测试：Since this machine has the FM synchronous transmission function, the following tests are performed on the audio system with poor original sound (car), the audio system with better original sound (car), and the audio system with lossy modified audio (car), respectively, the machine is muted. The original (car) audio is played alone, the FM transmitter is turned off and the local is played alone, and the device cooperates with the original (car) audio to play together:
在原车载音响效果较差的汽车上测试：Tested on a car with poor original car audio:
本机静音开启FM发射功能，此时相当于市面普通FM转发产品，音响效果相当于原(车载)音响。经专人试听，音响效果差强人意；The FM transmission function is turned on when the machine is muted, which is equivalent to ordinary FM forwarding products on the market, and the sound effect is equivalent to the original (car) sound. After audition by a special person, the sound effect is unsatisfactory;
关闭本机FM发射功能，此时相当于一台高品质蓝牙音响，本机经专人试听，声音效果良好；Turn off the FM transmission function of the machine, at this time it is equivalent to a high-quality Bluetooth speaker, the machine has been audited by a special person, and the sound effect is good;
本机开启播放并且开启FM发射功能协同原(车载)音响一起播放，经专人试听，原(车载)音响在本产品同步播放的补充下，声音效果饱满，立体感强，音效提升明显。The machine starts playing and the FM transmission function is turned on to play together with the original (car) audio. After audition by a special person, the original (car) audio is supplemented by the synchronous playback of this product, the sound effect is full, the three-dimensional effect is strong, and the sound effect is significantly improved.
在车载音响效果较好及经过有损改装的高档(车载)音响系统上测试：Tested on high-end (car) audio systems with better car audio effects and lossy modifications:
同样进行以上三种测试，试听效果与上述对应相同。The above three tests are also carried out, and the audition effect is the same as the above.
在本实用新型的描述中，除非另有明确的规定和限定，术语“设置”应做广义理解，例如，可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本实用新型中的具体含义。In the description of the present invention, unless otherwise expressly specified and limited, the term "arrangement" should be understood in a broad sense, for example, it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium. The connection can be the internal communication of the two elements or the interaction relationship of the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.
本实用新型使用到的标准零件均可以从市场上购买。The standard parts used in the utility model can be purchased from the market.
尽管已经示出和描述了本实用新型的实施例，对于本领域的普通技术人员而言，可以理解在不脱离本实用新型的原理和精神的情况下可以对这些实施例进行多种变化、修改、替换和变型，本实用新型的范围由所附权利要求及其等同物限定。Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes and modifications can be made to these embodiments without departing from the principles and spirit of the present invention , alternatives and modifications, the scope of the present invention is defined by the appended claims and their equivalents.