Vehicle-machine system power amplifier type identification method, electronic equipment and computer storage medium
An in-vehicle system and type identification technology, applied in the automotive field, can solve the problems of increasing the early development cost and post-maintenance cost, unable to know the type of power amplifier configured in the vehicle, unable to meet the performance requirements of the power amplifier, etc., and achieve the effect of reducing development and maintenance costs.
Active Publication Date: 2022-04-19
ECARX (HUBEI) TECHCO LTD
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The disadvantage of this method is that it increases the development cost in the early stage and the maintenance cost in the later stage.
The second is that the vehicle host dynamically configures DSP and power amplifier related parameters according to the Car Configuration (car configuration) signal parameters sent by the vehicle CEMECU (Electronic Control Unit), but because the Car Configuration parameters are only sent after the car is turned on, so During the period before the car is ignited, the on-board host cannot know the type of power amplifier configured in the vehicle, so the initialization of the DSP and power amplifier needs to be delayed until after the car is ignited, which cannot meet the early performance requirements of the power amplifier.
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[0035] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.
[0036] figure 1 is a schematic structural diagram of a vehicle-mounted host according to an embodiment of the present invention. see figure 1 As shown, MCU (Microcontroller Unit, micro control unit) main control chip 100, DSP (Digital signal processing, digital signal processing) audio chip 600 are integrated in the vehicle host 200, DSP audio chip 600 and MCU main control chip 100 through I2C bus Electrical connection for transm...
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The invention provides a power amplifier type identification method for a vehicle-machine system, electronic equipment, and a computer storage medium. The method includes: a GPIO drive module outputs a power-on signal, and a power amplifier type judgment module is preset for a period of time after the GPIO drive module outputs a power-on signal. The I2C driver module polls and outputs the built-in power amplifier information in the built-in power amplifier information table, and determines whether the power amplifier type of the vehicle system is a built-in power amplifier according to the response result of the I2C bus. If the preset duration is exceeded and the power amplifier type of the car-machine system is not determined to be a built-in power amplifier, read the identification information of the external power amplifier device through the CAN driver module, and determine whether the power amplifier type of the car-machine system is an external power amplifier according to the identification information amplifier. Based on the technical solution proposed by the present invention, the vehicle-mounted host can automatically identify the type of power amplifier configured in the vehicle after it is powered on, without compiling two software versions, reducing software development and maintenance costs, and meeting the early performance requirements of the power amplifier.
Description
technical field [0001] The invention relates to the technical field of automobiles, in particular to a method for identifying a power amplifier type of a vehicle-machine system, electronic equipment and a computer storage medium. Background technique [0002] In order to meet the needs of different consumers and for different market prices, cars are generally divided into three types: low configuration, medium configuration and high configuration. For the audio system, the host of high-end models is usually equipped with expensive external power amplifiers, which can achieve advanced sound effects such as surround sound, dynamic compensation, and active noise reduction; The chip is integrated into the host and supports relatively few audio functions. [0003] For car-machine systems that support these two different types of power amplifiers, the audio interface between the DSP chip and the power amplifier inside the car head unit, the control interface between the main cont...
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IPC IPC(8): G06F13/42G06F13/38G06F8/41G06F8/71
CPCG06F13/4282G06F13/382G06F8/41G06F8/71
Inventor 王建
Owner ECARX (HUBEI) TECHCO LTD