WO2021078046A1

WO2021078046A1 - On-board voice enhancer, on-board voice enhancing system, and on-board voice enhancing method

Info

Publication number: WO2021078046A1
Application number: PCT/CN2020/120823
Authority: WO
Inventors: 阮海林; 黄威; 朱可达; 李龙晨; 赵嘉鹏
Original assignee: 无锡吉兴汽车声学部件科技有限公司
Priority date: 2019-10-25
Filing date: 2020-10-14
Publication date: 2021-04-29
Also published as: CN110648682A

Abstract

An on-board voice enhancer (3), an on-board voice enhancing system, and an on-board voice enhancing method. The on-board voice enhancing system comprises voice collecting microphone assemblies (1, 2), an on-board voice enhancer (3), and an on-board FM broadcasting assembly (4); the voice collecting microphone assemblies (1, 2) are connected to at least one voice collecting microphone binding post (33, 34) of the on-board voice enhancer (3) by means of a signal line. An on-board diagnostics OBD interface (37) of the on-board voice enhancer (3) is inserted at a controller area network (CAN) port in a car cockpit

Description

In-vehicle voice enhancer, in-vehicle voice enhancement system and in-vehicle voice enhancement method

This application claims the priority of the Chinese patent application whose application date is October 25, 2019 and the application number is 201911023358.5. The entire content of this application is incorporated into this application by reference.

Technical field

This application relates to an in-car electronic consumer product, such as an in-car speech enhancer, an in-car speech enhancement system, and an in-car speech enhancement method.

Background technique

In-car voice enhancement technology means that the driver’s voice signal is transmitted to the rear passengers after noise cancellation and enhancement, so as to prevent the driver from turning around and communicating with the rear passengers and causing traffic accidents. It is an important vehicle safety technology. As car ride safety has attracted more and more attention from the public, products aimed at car ride safety have also emerged one after another, but there are still few studies on products that enhance the front and rear voice in the car. For in-car voice enhancement technology, there are already some conceptualized products, but they are all developed through positive development with OEMs and integrated in the vehicle configuration in advance. The application of this technology is not possible for existing vehicles on the market.

Summary of the invention

The present application provides an in-vehicle voice enhancer, which can handle the situation that the vehicle cannot be used for in-vehicle voice enhancement technology.

The present application provides an in-vehicle voice enhancement system, which can handle the situation that the vehicle cannot be used for in-vehicle voice enhancement technology.

The present application provides an in-vehicle voice enhancement method, which can handle the situation that the vehicle cannot perform in-vehicle voice enhancement technology applications.

An embodiment provides an in-vehicle voice enhancer, which includes a housing, a voice processing control board, an FM signal transmission control board, at least one voice collection microphone terminal, and an FM frequency modulation component. The back of the housing is provided with an on-board automatic diagnosis. OBD interface, the FM frequency modulation component is arranged on the front of the housing and is configured to perform frequency pairing with the in-vehicle FM broadcast, the on-vehicle automatic diagnosis OBD interface is connected to the voice processing control board through pin welding, so The voice processing control board is connected to the FM signal transmission control board by pin welding, the at least one voice collection microphone terminal is connected to the voice processing control board by signal wire welding, and the FM signal transmission control board is connected to the The FM frequency modulation components are connected by signal wire welding.

An embodiment provides an in-vehicle voice enhancement system, including a voice collection microphone component, the above-mentioned in-vehicle voice enhancer, and an in-vehicle FM broadcast component. The voice collection microphone component communicates with the voice intensifier in the vehicle through a signal line. The at least one voice collection microphone terminal is connected, the on-board automatic diagnostic OBD interface of the voice enhancer in the car is plugged into the CAN port of the controller area network in the car cockpit, and the FM frequency of the voice enhancer in the car is connected to The FM frequency of the radio in the car is the same, and there is no fixed FM radio on this frequency.

An embodiment provides an in-vehicle voice enhancement method, which is applied to the above-mentioned in-vehicle voice enhancement system, and the method includes:

After the voice collection microphone assembly collects the voice signal of the driver, it transmits the voice signal to the in-vehicle voice enhancer;

The in-vehicle voice enhancer performs noise cancellation and enhancement on the voice signal, and sends out the noise cancellation and enhanced voice signal through the FM signal transmission control board;

The in-vehicle FM broadcasting component receives the voice signal sent by the FM signal transmission control board and transmits the voice signal to the in-vehicle speaker for playback.

Description of the drawings

Fig. 1 is a schematic structural diagram of an in-vehicle voice enhancement system provided by a specific embodiment of the present application;

FIG. 2 is a schematic diagram of a three-dimensional structure of an in-vehicle voice enhancer according to a specific embodiment of the present application;

FIG. 3 is another three-dimensional structural diagram of the in-vehicle voice enhancer provided by the specific embodiment of the present application;

Figure 4 is an exploded view of the in-vehicle voice enhancer provided by the specific implementation of the present application;

FIG. 5 is another exploded view of the in-vehicle voice enhancer provided by the specific embodiment of the present application;

FIG. 6 is a schematic diagram of the structure of the voice collection microphone housing of the in-vehicle voice enhancement system provided by the specific embodiment of the present application.

Detailed ways

In order to facilitate the understanding of the application, the application will be described in a more comprehensive manner with reference to the relevant drawings. The accompanying drawings show optional embodiments of the application. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of this application more thorough and comprehensive. It should be noted that when a component is referred to as being "fixed to" another component, it can be directly on the other component or a central component may also exist. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only, and are not meant to be the only embodiments. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field of this application. The terminology used in the specification of the application herein is only for the purpose of describing specific embodiments, and is not intended to limit the application. The term "and/or" as used herein includes any and all combinations of one or more related listed items.

Please refer to Figures 1 to 6, in this embodiment, an in-vehicle voice enhancement system includes a first voice collection microphone 1, a second voice collection microphone 2, an in-vehicle voice enhancer 3, and an in-vehicle FM broadcasting component 4 The in-vehicle voice enhancer 3 includes a housing 30, a voice processing control board 31, an FM signal transmission control board 32, a first voice collection microphone terminal 33, a second voice collection microphone terminal 34, an FM LCD screen 35 and FM The frequency modulation button 36, the back of the housing 30 is provided with an On Board Diagnostics (OBD) interface 37. The OBD interface 37 and the Controller Area Network (CAN) port in the car cockpit adopt standard The 16-pin pin is connected to obtain 12V power supply and high-speed bus CANH signal and low-speed bus CANL signal. The voice processing control board 31 and the FM signal transmission control board 32 are arranged in the housing 30. The first voice acquisition microphone terminal 33 and the first Two voice collection microphone terminals 34 are arranged on both sides of the housing 30, the FM FM LCD screen 35 and the FM button 36 are arranged on the front of the housing 30, and the OBD interface 37 and the voice processing control board 31 are connected by pin welding, The voice processing control board 31 and the FM signal transmission control board 32 are connected by pin welding. The first voice acquisition microphone terminal 33 and the second voice acquisition microphone terminal 34 are both connected to the voice processing control board 31 through signal wire welding, FM frequency modulation The LCD screen 35 and the FM button 36 are respectively connected to the FM signal transmission control board 32 by means of signal wires.

The first voice collection microphone 1 and the second voice collection microphone 2 are respectively installed in two voice collection microphone housings 5 in the car, and each voice collection microphone housing 5 is installed on the voice collection microphone base 6. The two voice collection microphones The microphone base 6 is pasted on the armrest of the car’s A-pillar with adhesive tape. The first voice collection microphone 1 is in the front and the second voice collection microphone 2 is in the back. The front refers to the direction close to the engine. It is necessary to ensure that the first voice collection microphone 1 and the second The two voice collection microphones 2 are both in front of the driver's head. The signal lines of the first voice collection microphone 1 and the second voice collection microphone 2 are both buried in the door waterproof rubber strip, led out from the rubber strip at the bottom of the door from top to bottom, and then led to the car CAN along the foot space of the cockpit At the mouth, they are finally connected to the corresponding first voice collection microphone terminal 33 and the second voice collection microphone terminal 34 respectively.

Use the FM LCD screen 35 and the FM button 36 to pair the in-car voice enhancer 3 with the in-car FM radio. The adjustment frequency range is from 85MHz-110Mhz, and the adjusted step frequency is 0.1MHz. It needs to be adjusted to no FM. Broadcast program frequency, that is, there is no fixed FM station on this frequency.

The method and steps of using the in-vehicle voice enhancement system are described below in conjunction with the principles of in-vehicle voice enhancement technology:

1) Confirm that the power connection and signal connection are normal. When the voice enhancer 3 in the car is plugged into the CAN port in the car cockpit through the OBD interface 37, after the 12V power supply and CANH and CANL are connected normally, the voice processing control board 31 The dual LED lights will show blue light.

2) To set the FM frequency modulation, click the "+" or "-" key of the FM frequency modulation button 36, and observe the frequency displayed on the FM FM LCD screen 35, and adjust the frequency of the voice enhancer 3 in the car to the appropriate frequency f, The principle is that the frequency does not have a fixed FM radio station. At this time, turn on the FM function of the car and adjust to the same frequency f to complete the FM signal connection.

3) The voice enhancer 3 in the car will work automatically after power-on. After completing the above two steps, you can perform a voice test to test whether the speaker 7 in the car emits a clear and audible voice. At this time, you can properly adjust the distance between the first voice collection microphone 1 and the second voice collection microphone 2 from the driver. In principle, the closer to the driver's head, the louder the sound. You can also adjust the multimedia volume knob in the car to adjust to the appropriate sound. size.

The main principle of the in-vehicle voice enhancer 3 is: the first voice collection microphone 1 and the second voice collection microphone 2 collect the driver’s voice signal, and then transfer the voice signal to the in-vehicle voice enhancer 3, the in-vehicle voice enhancer 3 After denoising and enhancing the voice signal, the voice signal is sent out through the FM signal transmission control board 32. The in-car FM broadcasting component 4 receives the voice signal sent out through the FM signal transmission control board 32 and transmits the voice signal to the in-car speaker 7 Play it to achieve the purpose of clearly listening to the rear passengers.

The above-mentioned in-vehicle voice enhancement system allows the voice enhancement technology to be better implemented in the car, realizes the enhancement of the driver's voice signal and transmits it to the rear passenger area, improves the clarity of voice communication in the car, and reduces the risk of driving voice communication. In addition, the modification of the original car is greatly reduced, the layout is simple, the cost is saved, and it has good commercial promotion value.

The beneficial effect of the present application is that the in-vehicle voice enhancement system has the following advantages compared with related technologies:

1) It realizes the enhancement of the driver's voice signal and transmits it to the rear passenger area to improve the clarity of voice communication in the car;

2) It has good compatibility with the existing parts of the car, no need to modify the original car, the layout is simple, and the cost is saved;

3) Easy to implement, good practicability, and good market promotion prospects.

Claims

An in-vehicle voice enhancer (3), including a housing (30), a voice processing control board (31), an FM signal transmission control board (32), at least one voice collection microphone terminal (33, 34) and FM frequency modulation Components (35, 36), the back of the housing (30) is provided with an on-board automatic diagnostic OBD interface (37), and the FM frequency modulation components (35, 36) are provided on the front of the housing (30) and are It is configured to perform frequency pairing with the in-vehicle FM broadcast, the on-board automatic diagnosis OBD interface (37) and the voice processing control board (31) are connected by pin welding, and the voice processing control board (31) is connected to the FM The signal transmission control board (32) is connected by pin welding, the at least one voice collection microphone terminal (33, 34) is connected to the voice processing control board (31) by signal wire welding, and the FM signal transmission control board (32) Connected with the FM frequency modulation components (35, 36) through signal wire welding.
The in-vehicle voice enhancer (3) according to claim 1, wherein the at least one voice collection microphone terminal (33, 34) comprises a first voice collection microphone terminal (33) and a second voice collection microphone terminal A post (34). The first voice collection microphone connection post (33) and the second voice collection microphone connection post (34) are respectively provided on both sides of the housing (30).
The in-vehicle voice enhancer (3) according to claim 1, wherein the FM frequency modulation component (35, 36) includes an FM frequency modulation liquid crystal screen (35) and an FM frequency modulation button (36), the FM frequency modulation liquid crystal screen (35) and the FM frequency modulation button (36) are respectively connected with the FM signal transmission control board (32) through signal wire welding.
The in-vehicle voice enhancer (3) according to claim 1 or 3, wherein the adjustment frequency range of the FM frequency modulation component (35, 36) is from 85MHz to 110Mhz, and the step frequency of adjustment is 0.1MHz. Adjust to no FM radio program frequency.
The in-vehicle voice enhancer (3) according to claim 1, wherein the on-vehicle automatic diagnosis OBD interface (37) and the controller area network CAN port in the car cockpit adopt a standard 16-pin pin for communication. Connect to obtain 12V power supply and high-speed bus CANH signal and low-speed bus CANL signal.
An in-vehicle voice enhancement system, comprising a voice collection microphone component (1,2), an in-vehicle FM broadcasting component (4) and the in-vehicle voice enhancer (3) according to any one of claims 1-5, so The voice collection microphone assembly (1, 2) is connected to the at least one voice collection microphone terminal (33, 34) of the in-vehicle voice enhancer (3) through a signal line, and the in-vehicle voice enhancer (3) The on-board automatic diagnostic OBD interface (37) of) is plugged into the CAN port of the controller area network in the car cockpit. The FM frequency of the voice enhancer (3) in the car is the same as the FM frequency of the radio in the car, and the There is no fixed FM station on the frequency.
The in-vehicle voice enhancement system according to claim 6, wherein the at least one voice collection microphone terminal (33, 34) comprises a first voice collection microphone terminal (33) and a second voice collection microphone terminal (34) ), the voice collection microphone assembly (1,2) includes a first voice collection microphone (1) and a second voice collection microphone (2), the first voice collection microphone (1) and the second voice collection microphone (2) The first voice collection microphone (1) and the second voice collection microphone (2) are respectively attached to the car’s A-pillar armrests through tapes, respectively, and the in-car voice enhancer (3) through signal lines. The connection post (33) of the first voice collection microphone and the connection post (34) of the second voice collection microphone are connected to each other.
The in-vehicle voice enhancement system according to claim 7, wherein the first voice collection microphone (1) is located in front of the second voice collection microphone (2), wherein the front refers to the direction facing the engine, and the The first voice collection microphone (1) and the second voice collection microphone (2) are located in front of the driver's head.
The in-vehicle voice enhancement system according to claim 7, wherein the signal line of the first voice collection microphone (1) and the signal line of the second voice collection microphone (2) are buried in the door waterproof rubber strip , And lead out from the rubber strip at the bottom of the door from top to bottom, and lead to the controller area network CAN port of the car along the foot space of the cockpit to connect to the corresponding first voice collection microphone terminal (33) and the second voice collection microphone terminal (34).
An in-vehicle voice enhancement method, applied to the in-vehicle voice enhancement system according to claim 6, the method comprising:

After the voice collection microphone assembly (1,2) collects the driver's voice signal, it transmits the voice signal to the in-vehicle voice enhancer (3);

The in-vehicle voice enhancer (3) performs noise cancellation and enhancement on the voice signal, and sends the noise cancellation and enhanced voice signal through the FM signal transmission control board (32);

The in-vehicle FM broadcasting component (4) receives the voice signal sent by the FM signal transmission control board (32) and transmits the voice signal to the in-vehicle speaker (7) for playback.