CN215529217U - Vehicle-mounted audio system and vehicle-mounted equipment - Google Patents

Abstract

The embodiment of the utility model discloses a vehicle-mounted audio system and vehicle-mounted equipment, which adopt the technical scheme, wherein the vehicle-mounted audio system and the vehicle-mounted equipment are provided with a functional module, a plurality of loudspeakers and a plurality of sound pick-up devices, the functional module, the loudspeakers and the sound pick-up devices are connected through an unshielded twisted pair, meanwhile, double-port transceivers are arranged in the functional module, each loudspeaker and each sound pick-up device, the double-port transceivers are connected in a mode of two daisy chains, the head nodes of the two daisy chains are the functional modules, and each loudspeaker is arranged on the node of one daisy chain; each microphone is arranged on a node of the other daisy chain. Through the vehicle-mounted audio system connected in the non-shielding twisted pair chain manner, the number of cables required by the vehicle-mounted audio system can be reduced, the weight of the vehicle-mounted audio system is reduced, and meanwhile, the cost of the vehicle-mounted audio system can be reduced.

Description

Vehicle-mounted audio system and vehicle-mounted equipment

Technical Field

The utility model relates to vehicle-mounted equipment, in particular to a vehicle-mounted audio system and vehicle-mounted equipment.

Background

Along with the increasing processing demand of the vehicle-mounted audio system for audio signals, the number of audio nodes in the automobile audio system is continuously increased, a traditional audio connection mode is adopted, and a plurality of analog audio nodes are connected through a vehicle-mounted audio system audio controller, so that the number of wire harnesses connected by the existing vehicle-mounted audio system is large, and the weight of the total wire harness is large. Automotive audio systems that also use analog cable wiring require special and expensive shielded cables for the various audio signal channels.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is necessary to provide a vehicle audio system and a vehicle-mounted device, which have problems that the number of harnesses connected to the vehicle audio system is large and the total weight of the harnesses is large.

The present invention provides a vehicle audio system, comprising:

the functional module is used for processing, controlling and amplifying the signals;

the loudspeakers are connected with the functional module through an unshielded twisted pair and used for receiving audio signals and playing the signals; and

the plurality of sound pickups are connected with the functional module through an unshielded twisted pair and used for collecting audio signals;

the functional module, each loudspeaker and each sound pick-up are internally provided with double-port transceivers which are connected in a two-daisy chain manner, the head nodes of the two daisy chains are the functional modules, and each loudspeaker is arranged on the node of one daisy chain; each microphone is arranged on a node of the other daisy chain.

In one embodiment, the functional module includes a main control module and a power amplifier module, and the main control module is used for processing and controlling signals; the power amplification module is used for amplifying signals.

In one embodiment, a DSP chip is built in the power amplifier module for filtering and denoising the acquired audio signal.

In one embodiment, the master control module comprises a first processor and a second processor, wherein the first processor is responsible for processing signals; the second processor is responsible for control of the signal.

In one embodiment, the dual port transceiver is audio A²B, a bus transceiver.

In one embodiment, the functional module is arranged in front of a driver in the vehicle body;

the plurality of loudspeakers are respectively arranged at the front part, the middle part and the rear part in the vehicle body and outside the vehicle body;

the plurality of sound pickups are respectively arranged at the front part, the middle part and the rear part in the vehicle body and are used for collecting noise in the vehicle body.

An in-vehicle apparatus comprising: the car audio system according to any of the above embodiments.

Due to the adoption of the technical scheme, the vehicle-mounted audio system and the vehicle-mounted equipment provided by the utility model have the advantages that the audio system is provided with the functional module, the loudspeakers and the sound pick-up devices, the functional module, the loudspeakers and the sound pick-up devices are connected through the unshielded twisted pair, meanwhile, the functional module, each loudspeaker and each sound pick-up device are internally provided with the double-port transceiver, the double-port transceivers are connected in a two-daisy-chain mode, the head nodes of the two daisy-chains are the functional modules, and each loudspeaker is arranged on the node of one daisy-chain; each microphone is arranged on a node of the other daisy chain. Through the vehicle-mounted audio system connected in the non-shielding twisted pair chain manner, the number of cables required by the vehicle-mounted audio system can be reduced, the weight of the vehicle-mounted audio system is reduced, and meanwhile, the cost of the vehicle-mounted audio system can be reduced. In addition, when the loudspeaker or the sound pick-up on one node is in failure, the working of the loudspeaker and the sound pick-up on other nodes is not influenced, and the maintenance cost of the vehicle-mounted audio system can be reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Wherein:

fig. 1 is a block diagram of a configuration of an in-vehicle audio system provided in an embodiment;

FIG. 2 is an in-vehicle audio system provided in another embodiment;

in the figure: 100. a functional module; 110. a main control module; 120. a power amplifier module; 200. a speaker; 300. a sound pickup; 400. a dual port transceiver.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The terms first, second and the like in the description and in the claims, and in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be practiced otherwise than as specifically illustrated.

The embodiment of the utility model discloses a vehicle-mounted audio system, as shown in fig. 1, a functional module 100 is used for processing, controlling and amplifying signals; a plurality of speakers 200 connected to the function module 100 through an unshielded twisted pair for emitting sounds; and a plurality of microphones 300 connected to the functional module 100 through an unshielded twisted pair for signal acquisition; the functional module 100, each speaker 200 and each sound pick-up 300 are all provided with a dual-port transceiver 400 therein, the dual-port transceivers 400 are connected in a manner of two daisy chains, the head node of the two daisy chains is the functional module 100, and each speaker 200 is arranged on the node of one daisy chain; each microphone 300 is located on a node of another daisy chain.

Due to the adoption of the technical scheme, the vehicle-mounted audio system and the vehicle-mounted equipment provided by the utility model have the advantages that the audio system is provided with the functional module 100, the loudspeakers 200 and the sound pick-up devices 300, the functional module 100, the loudspeakers 200 and the sound pick-up devices 300 are connected through the unshielded twisted pair, the functional module 100, each loudspeaker 200 and each sound pick-up device 300 are internally provided with the double-port transceiver 400, the double-port transceivers 400 are connected in a two-daisy chain mode, the head nodes of the two daisy chains are the functional module 100, and each loudspeaker 200 is arranged on the node of one daisy chain; each microphone 300 is located on a node of another daisy chain. Through the vehicle-mounted audio system connected in the non-shielding twisted pair chain manner, the number of cables required by the vehicle-mounted audio system can be reduced, the weight of the vehicle-mounted audio system is reduced, and meanwhile, the cost of the vehicle-mounted audio system can be reduced. In addition, when the loudspeaker 200 or the sound pick-up 300 on one node fails, the operation of the loudspeaker 200 and the sound pick-up 300 on other nodes is not influenced, and the maintenance cost of the vehicle-mounted audio system can be reduced.

In an embodiment, the functional module 100 includes a main control module 110 and a power amplifier module 120, where the main control module 110 is configured to process and control signals; the power amplifier module 120 is used for amplifying signals. It can be understood that, in the process of playing the audio, the main control module 110 controls the sending of the audio signal, the sent audio signal is transmitted to the power amplifier module 120, the power amplifier module 120 amplifies the received audio signal and transmits the amplified audio signal to the speaker 200, and the speaker 200 receives the amplified audio signal and plays the audio signal.

In an embodiment, the power amplifier module 120 is embedded with a DSP chip. Different audio signal can be gathered to adapter 300, and the audio signal that adapter 300 gathered passes through the DSP chip, and the DSP chip is handled audio signal to noise signal among the filtering audio signal. When the bus carries out the pronunciation and reports a stop, open speaker 200 and adapter 300 simultaneously, open adapter 300 and can then can reduce the noise in the carriage to the passenger can both hear the bus information of reporting a stop.

In one embodiment, the main control module 110 includes a first processor and a second processor, the first processor is responsible for processing signals, including encoding and decoding of audio signals; the second processor is responsible for controlling the signals, including controlling the volume and switching the input and output channels of the audio signals.

The first processor is a Central Processing Unit (CPU), the second processor is a Micro Control Unit (MCU), and the Central Processing Unit (CPU) is one of main devices of an electronic computer and a core accessory in the computer. Its functions are mainly to interpret computer instructions and to process data in computer software. The CPU is the core component of the computer responsible for reading, decoding and executing instructions. The central processor mainly comprises two parts, namely a controller and an arithmetic unit, and also comprises a cache memory and a bus for realizing data and control of the connection between the cache memory and the arithmetic unit. MCU (micro Control unit), Chinese is a micro Control unit, also called a single chip microcomputer, which means that a CPU, an RAM, a ROM, a timing counter and various I/O interfaces of a computer are integrated on a chip to form a chip-level computer.

In one embodiment, the dual port transceiver 400 is audio A²B, a bus transceiver. A. the²The B bus is one of the car audio buses, which can reduce the weight of the transmission cable by up to 75% and can provide high fidelity digital audio. The car audio bus is optimized for audio applications, provides superior audio quality compared to an analog audio bus, and has a system total cost much lower than the existing digital bus standard. Simplest A²The B-bus is a high bandwidth (50Mbps) digital bus that can be used over very long distances (sections)The distance between the points is up to 10m) at the maximum, I2S audio and I2C control data are transmitted along with the clock and power using an unshielded twisted pair.

In one embodiment, the functional module 100 is disposed in front of the driver in the vehicle body; the plurality of speakers 200 are respectively disposed at the front, middle, rear, and outside of the vehicle body; the plurality of sound collectors 300 are respectively arranged at the front part, the middle part and the rear part in the vehicle body and are used for collecting noise in the vehicle body. The loudspeaker 200 is arranged at the front part, the middle part and the rear part in the vehicle body, so that passengers at all positions in the vehicle can conveniently hear the voice broadcast, and the loudspeaker 200 is arranged outside the vehicle body, so that passengers waiting for taking a bus outside the vehicle at a station can conveniently hear the voice broadcast. The plurality of sound collectors 300 are respectively arranged at the front part, the middle part and the rear part in the car body, so that various audio signals in the car can be collected conveniently, when the audio signals are transmitted to the power amplifier module 120 through the unshielded twisted pair, the power amplifier module 120 filters and reduces noise of the audio signals, and the filtered audio signals are transmitted to the main control module 110. The main control module 110 processes and controls the playing.

The embodiment of the utility model discloses a vehicle-mounted device, which comprises: the car audio system of any one of the embodiments described above. The vehicle-mounted audio system is applied to the vehicle-mounted equipment, so that the number of cables required by the vehicle-mounted equipment can be reduced, the weight of the vehicle-mounted equipment is reduced, and meanwhile, the cost of the vehicle-mounted equipment can be reduced.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above 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 several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (7)

1. An in-vehicle audio system, comprising:

the functional module is used for processing, controlling and amplifying the signals;

the loudspeakers are connected with the functional module through an unshielded twisted pair and used for receiving audio signals and playing the signals; and

the plurality of sound pickups are connected with the functional module through an unshielded twisted pair and used for collecting audio signals;

the functional module, the loudspeaker and the sound pick-up are all internally provided with double-port transceivers which are connected in a two-daisy chain manner, the head nodes of the two daisy chains are the functional module, and the loudspeaker is arranged on the node of one daisy chain; the sound pick-up is arranged on the nodes of the other daisy chain.

2. The vehicle-mounted audio system according to claim 1, wherein the functional module comprises a main control module and a power amplifier module, and the main control module is used for processing and controlling signals; the power amplification module is used for amplifying signals.

3. The vehicle-mounted audio system according to claim 2, wherein a DSP chip is built in the power amplifier module for filtering and denoising the collected audio signal.

4. The car audio system of claim 2, wherein the main control module comprises a first processor and a second processor, and the first processor is responsible for processing signals; the second processor is responsible for control of the signal.

5. The car audio system of claim 1, wherein the dual port transceiver is audio A²B, a bus transceiver.

6. The car audio system according to claim 1, wherein the function module is provided in front of a driver in a car body;

the plurality of loudspeakers are respectively arranged at the front part, the middle part and the rear part in the vehicle body and outside the vehicle body;

the plurality of sound pickups are respectively arranged at the front part, the middle part and the rear part in the vehicle body and are used for collecting noise in the vehicle body.

7. An in-vehicle apparatus, characterized by comprising: the car audio system of any one of claims 1 to 6.

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