Vehicle vibration and noise control systems, integrated chassis structures, and new energy vehicles

Abstract

The present invention provides a vehicle vibration and noise control system, comprising: a monitoring module, a collection module, a processing module, a first identification module, a second identification module and a control module, wherein the monitoring module comprises a vehicle-mounted radar and a vehicle-mounted camera; the output ends of the vehicle-mounted radar and the vehicle-mounted camera are connected to the input end of the collection module, the output end of the collection module is connected to the input end of the processing module, the output end of the processing module is connected to the input end of the first identification module, the output end of the first identification module is connected to the first input end of the control module, and the output end of the second identification module is connected to the second input end of the control module.

Description

Technical Field

[0001] The present invention relates to the field of new energy vehicles, and in particular to a vehicle vibration and noise control system, an integrated chassis structure and a new energy vehicle. Background Art

[0002] Vehicles often encounter uneven road conditions during driving, which may cause vibration and noise inside the vehicle.

[0003] At present, road surface recognition mainly uses vibration sensors installed on the chassis or body to collect real-time vibration signals during vehicle driving for analysis, and then suppresses vehicle vibration through different vibration reduction measures, or collects real-time road surface information or in-vehicle noise through vehicle vibration and noise sensors. This solution requires the vibration and noise control system to respond in real time, has high requirements on the speed of the vibration and noise control system, and has no preprocessing time and sufficient response time for the vibration and noise control system. Summary of the invention

[0004] The present invention provides a vehicle vibration and noise control system, an integrated chassis structure and a new energy vehicle, so as to solve the problem that the current vehicle vibration and noise control system lacks preprocessing time.

[0005] According to a first aspect of the present invention, a vehicle vibration and noise control system is provided, comprising: a monitoring module, a collection module, a processing module, a first identification module, a second identification module and a control module, wherein the monitoring module comprises a vehicle-mounted radar and a vehicle-mounted camera;

[0006] The output ends of the vehicle-mounted radar and the vehicle-mounted camera are connected to the input end of the acquisition module, the output end of the acquisition module is connected to the input end of the processing module, the output end of the processing module is connected to the input end of the first recognition module, the output end of the first recognition module is connected to the first input end of the control module, and the output end of the second recognition module is connected to the second input end of the control module;

[0007] The vehicle-mounted radar is used to: monitor first road surface information of the road ahead during vehicle driving;

[0008] The vehicle-mounted camera is used to: monitor second road surface information of the road ahead during vehicle driving;

[0009] The processing module is used to: convert the first road surface information and the second road surface information into a first road surface digital signal and a second digital road surface signal;

[0010] The first recognition module is used to: acquire and recognize the first road surface digital signal and the second digital road surface signal, obtain current road surface information, and send it to the control module;

[0011] The second identification module is used to: identify current vehicle information and send it to the control module;

[0012] The control module is used to control the vibration and noise in the vehicle in advance based on the current road surface information and the current vehicle information.

[0013] Optionally, the monitoring of first road surface information of a road ahead during vehicle driving includes:

[0014] The vehicle-mounted radar illuminates the road ahead by transmitting a signal and receives a reflected signal;

[0015] Based on the transmission signal and the reflection signal, obtaining first road surface information of the road ahead;

[0016] The first road surface information is characterized by distance information and direction information between the front road surface and the vehicle.

[0017] Optionally, the acquisition module includes: a first acquisition module and a second acquisition module;

[0018] The first acquisition module is used to: acquire the first road surface information and send it to the processing module;

[0019] The second acquisition module is used to: collect the second road surface information and send it to the processing module;

[0020] The second road surface information is represented by an image of the road ahead captured by the vehicle-mounted camera.

[0021] Optionally, the processing module includes a photosensitive component circuit and a control component, and the photosensitive component circuit and the control component are used to: process the image of the road ahead and convert it into the second digital road signal.

[0022] Optionally, the second digital road surface signal includes: a road surface smoothness signal and a road surface unevenness signal;

[0023] The first recognition module is specifically used to: recognize the road surface unevenness signal and send it to the control module.

[0024] Optionally, the current vehicle information specifically includes: vehicle speed information, brake information, steering information and throttle information.

[0025] Optionally, the control module includes a computing unit;

[0026] The calculation unit is used to calculate the travel time required for the vehicle to travel to the road ahead based on the distance information between the road ahead and the vehicle and the vehicle speed information.

[0027] Optionally, the control module is specifically used to: determine the time when the control module starts working based on the driving time, so as to control the vibration and noise in the vehicle in advance.

[0028] Optionally, the vehicle vibration and noise control system further includes an active suspension, which is used to control the vehicle body height and adjust the vibration inside the vehicle.

[0029] According to a second aspect of the present invention, there is provided an integrated chassis structure comprising the vehicle vibration and noise control system according to the first aspect.

[0030] According to a third aspect of the present invention, there is provided a new energy vehicle comprising the integrated chassis structure described in the second aspect.

[0031] The vehicle vibration and noise control system, integrated chassis structure and new energy vehicle provided by the present invention monitor and analyze the road surface information of the road ahead by arranging a vehicle-mounted radar and a vehicle-mounted camera, thereby improving the accuracy of the road surface information, further realizing the prediction of the road surface conditions ahead, and increasing the reaction preprocessing time of the vehicle vibration and noise control system.

[0032] And in a preferred embodiment, since the information recognized in the second recognition module includes the vehicle speed and turn signal, the driving time required for the vehicle to reach the road ahead can be calculated based on the vehicle speed, turn signal and other information, thereby further increasing the response time of the vehicle vibration and noise control system. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0034] Figure 1 The structure of the vehicle vibration noise control system in one embodiment of the present invention is shown in FIG. Figure 1 ;

[0035] Figure 2 The structure of the vehicle vibration noise control system in one embodiment of the present invention is shown in FIG. Figure 2 .

[0036] Description of reference numerals:

[0037] 1- Monitoring module;

[0038] 101-vehicle radar;

[0039] 102-car camera;

[0040] 2- Collection module;

[0041] 201-first acquisition module;

[0042] 202-second acquisition module;

[0043] 3- Processing module;

[0044] 4- first identification module;

[0045] 5- Control module;

[0046] 6- Second identification module. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0049] The technical solution of the present invention is described in detail with specific embodiments below. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0050] At present, the road surface recognition mainly uses vibration sensors installed on the chassis or body to collect real-time vibration signals during vehicle driving and analyze them, and then suppress the vehicle vibration through different vibration reduction measures. This method has no pre-judgment measures for road surface recognition, and has high requirements on the data processing computing power of the vibration reduction system and the response speed of the vibration reduction system.

[0051] In view of this, the present invention provides a vehicle vibration and noise control system. Figure 1 as well as Figure 2 The present invention provides a vehicle vibration and noise control system, including: a monitoring module 1, a collection module 2, a processing module 3, a first recognition module 4, a second recognition module 6 and a control module 5, wherein the monitoring module 1 includes a vehicle-mounted radar 101 and a vehicle-mounted camera 102.

[0052] Specifically, the output ends of the vehicle-mounted radar 101 and the vehicle-mounted camera 102 are connected to the input end of the acquisition module 2, the output end of the acquisition module 2 is connected to the input end of the processing module 3, the output end of the processing module 3 is connected to the input end of the first identification module 4, the output end of the first identification module 4 is connected to the first input end of the control module 5, and the output end of the second identification module 6 is connected to the second input end of the control module 5.

[0053] The vehicle-mounted radar 101 is used to monitor first road surface information of the road ahead during vehicle driving.

[0054] The vehicle-mounted camera 102 is used to monitor second road surface information of the road ahead during the driving of the vehicle.

[0055] The processing module 3 is used to convert the first road surface information and the second road surface information into a first road surface digital signal and a second digital road surface signal.

[0056] The first recognition module 4 is used to obtain and recognize the first digital road surface signal and the second digital road surface signal, obtain current road surface information, and send the information to the control module.

[0057] The second identification module 6 is used to identify the current vehicle information and send it to the control module.

[0058] The control module 5 is used to control the vibration and noise in the vehicle in advance based on the current road surface information and the current vehicle information.

[0059] The vehicle-mounted radar 101 includes a vehicle-mounted laser radar, a millimeter-wave radar and an ultrasonic radar.

[0060] Of course, the present invention is not limited to this, and other types of vehicle-mounted radars are within the protection scope of the present invention.

[0061] In one example, the current vehicle information specifically includes: vehicle speed information, brake information, steering information and throttle information.

[0062] In a specific embodiment, the vehicle's speed, brake, steering and throttle signals (i.e., current vehicle information) can be used to evaluate the vehicle's motion state, and then combined with the identified road surface information (i.e., second road surface information) to control the vehicle vibration and noise control system to operate. For example, the specific time when the vehicle vibration and noise control system starts working can be determined based on the vehicle speed information.

[0063] In the above scheme, by setting up vehicle-mounted radar and vehicle-mounted camera, the road surface information of the road ahead is monitored and analyzed to improve the accuracy of the road surface information. Further, the road surface conditions ahead are predicted and the reaction preprocessing time of the vehicle vibration and noise control system is increased.

[0064] As a preferred implementation, the control module 5 includes a calculation unit, which is used to calculate the travel time required for the vehicle to travel to the road ahead based on the distance information between the road ahead and the vehicle and the vehicle speed information.

[0065] The control module 5 is specifically used to determine the time when the control module starts working based on the driving time, so as to control the vibration and noise in the vehicle in advance.

[0066] Specifically, the vehicle radar 101 is used to determine the distance between the vehicle and the road ahead, and the vehicle status is confirmed by the braking information, the steering information, and the throttle information in the current vehicle information, combined with the vehicle speed information in the current vehicle information. The control module 5 can calculate the time required for the vehicle to travel to the road ahead under the current vehicle status, and respond to the vehicle vibration and noise control system in advance.

[0067] In the above scheme, the time required for the vehicle to travel to the road ahead is calculated by the vehicle radar 101 and the current vehicle information, so that the vehicle vibration and noise control system has preprocessing time and is adjusted based on the road surface information to improve the comfort and smoothness of the vehicle during operation.

[0068] Regarding obtaining the first road surface information, the first road surface information of the road ahead is monitored during the vehicle driving process, including:

[0069] The vehicle-mounted radar 101 illuminates the road ahead by transmitting a signal and receives a reflected signal;

[0070] Based on the transmission signal and the reflection signal, first road surface information of the road ahead is obtained.

[0071] The first road surface information is characterized by distance information and direction information between the front road surface and the vehicle.

[0072] Specifically, the first road surface information also includes a distance change rate and height information between the front road surface and the vehicle.

[0073] In one example, the transmission signal and the reflection signal include: a laser beam, an electromagnetic wave, and an ultrasonic wave.

[0074] Of course, the present invention is not limited to this, and other signals are within the protection scope of the present invention.

[0075] In a specific embodiment, the vehicle-mounted radar 101 emits laser beams, electromagnetic waves and ultrasonic waves to illuminate the road ahead (i.e., transmit signals) and receive their echoes (i.e., reflected signals), thereby obtaining information such as the distance from the road ahead to the signal transmission point, the rate of change of distance, the azimuth, and the altitude.

[0076] As a preferred implementation, the vehicle-mounted radar adopts a laser radar, which mainly describes the surface morphology of the road ahead by emitting laser through a laser transmitter and receiving returned information.

[0077] In one example, the detection principle of the laser radar is the time-of-flight method, that is, by continuously sending light pulses to the road ahead, and then using a sensor to receive the light returned from the road ahead, the distance of the target object (that is, the distance from the road ahead to the signal emission point) is obtained based on the round-trip flight time of the detected light pulses.

[0078] In another example, the distance from the road ahead to the signal emission point can also be measured by continuous wave modulation or coherent heterodyne method, and finally multiple laser beams are swung to scan the road ahead of the vehicle to form a point cloud signal (i.e., the first digital road signal), thereby describing the road ahead information. For acquisition module 2, please continue to refer to Figure 2 , the acquisition module 2 includes: a first acquisition module 201 and a second acquisition module 202;

[0079] The first acquisition module 201 is used to: acquire the first road surface information and send it to the processing module 3;

[0080] The second acquisition module 202 is used to: collect the second road surface information and send it to the processing module 3;

[0081] The second road surface information is represented by an image of the road ahead captured by the vehicle-mounted camera 102 .

[0082] Regarding the processing module 3, specifically, the processing module 3 includes a photosensitive component circuit and a control component, and the photosensitive component circuit and the control component are used to: process the image of the road ahead and convert it into the second digital road signal.

[0083] Specifically, the second digital road surface signal includes: a road surface smoothness signal and a road surface unevenness signal;

[0084] The first recognition module is specifically used to: recognize the road surface unevenness signal and send it to the control module.

[0085] In a specific embodiment, after the vehicle-mounted camera 102 captures an image, the photosensitive component circuit and the control component process the image and convert it into a digital signal that can be processed by a computer (i.e., a second digital road surface signal), and recognize it through image matching to achieve perception of road surface information in front of the vehicle. Specifically, the unevenness of the road surface is mainly recognized.

[0086] As a preferred implementation, when a camera is used to capture images of the road ahead, different algorithms are used based on the configurations of different cameras. In one example, a monocular vision camera calculates the distance (i.e., the distance from the road ahead to the signal emission point) based on the size of the target after image matching; in another example, a binocular vision camera measures the distance (i.e., the distance from the road ahead to the signal emission point) by calculating the parallax of two images from two cameras; in other examples, a multi-eye camera covers scenes of different ranges by cooperating with multiple different cameras.

[0087] In the above scheme, the unevenness of the road surface will cause vibration and noise inside the vehicle at the same time. By identifying the unevenness of the road surface in advance and increasing the preprocessing time of the vehicle vibration and noise control system, the vibration and noise inside the vehicle can be reduced more accurately.

[0088] In one embodiment, the vehicle vibration and noise control system further includes an active suspension.

[0089] The active suspension is used to control the height of the vehicle body and adjust the vibration inside the vehicle.

[0090] In other embodiments, the present invention uses active sound noise reduction technology to reduce the noise inside the car. Specifically, after analyzing the sound waves of the noise, reverse sound waves are sent through the car audio to superimpose and neutralize the noise, thereby achieving the effect of eliminating noise.

[0091] The present invention also provides an integrated chassis structure, comprising the above-mentioned vehicle vibration and noise control system.

[0092] In addition, the present invention also provides a new energy vehicle, comprising the integrated chassis structure described above.

[0093] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A vehicle vibration noise control system, characterized in that: include: A monitoring module, a collection module, a processing module, a first identification module, a second identification module and a control module, wherein the monitoring module includes a vehicle-mounted radar and a vehicle-mounted camera; The output ends of the vehicle-mounted radar and the vehicle-mounted camera are connected to the input end of the acquisition module, the output end of the acquisition module is connected to the input end of the processing module, the output end of the processing module is connected to the input end of the first recognition module, the output end of the first recognition module is connected to the first input end of the control module, and the output end of the second recognition module is connected to the second input end of the control module; The vehicle-mounted radar is used to: monitor first road surface information of the road ahead during vehicle driving; The vehicle-mounted camera is used to: monitor second road surface information of the road ahead during vehicle driving; The processing module is used to: convert the first road surface information and the second road surface information into a first road surface digital signal and a second digital road surface signal; The first recognition module is used to: acquire and recognize the first road surface digital signal and the second digital road surface signal, obtain current road surface information, and send it to the control module; The second identification module is used to: identify the current vehicle information and send it to the control module, the current vehicle information specifically including: vehicle speed information, brake information, steering information and throttle information; The control module is used to control the vibration and noise in the vehicle in advance based on the current road surface information and the current vehicle information.

2. The vehicle vibration noise control system according to claim 1, characterized in that: The first road surface information of the road ahead is monitored during the vehicle driving process, including: The vehicle-mounted radar illuminates the road ahead by transmitting a signal and receives a reflected signal; Based on the transmission signal and the reflection signal, obtaining first road surface information of the road ahead; The first road surface information is characterized by distance information and direction information between the front road surface and the vehicle.

3. The vehicle vibration noise control system according to claim 2, characterized in that: The acquisition module includes: a first acquisition module and a second acquisition module; The first acquisition module is used to: acquire the first road surface information and send it to the processing module; The second acquisition module is used to: collect the second road surface information and send it to the processing module; The second road surface information is represented by an image of the road ahead captured by the vehicle-mounted camera.

4. The vehicle vibration noise control system according to claim 1, characterized in that: The processing module includes a photosensitive component circuit and a control component, and the photosensitive component circuit and the control component are used to: process the image of the road ahead and convert it into the second digital road signal.

5. The vehicle vibration noise control system according to claim 4, characterized in that: The second digital road surface signal includes: a road surface smoothness signal and a road surface unevenness signal; The first recognition module is specifically used to: recognize the road surface unevenness signal and send it to the control module.

6. The vehicle vibration noise control system according to claim 1, characterized in that: The control module includes a computing unit; The calculation unit is used to calculate the travel time required for the vehicle to travel to the road ahead based on the distance information between the road ahead and the vehicle and the vehicle speed information.

7. The vehicle vibration noise control system according to claim 6, characterized in that: The control module is specifically used to determine the time when the control module starts working based on the driving time, so as to control the vibration and noise in the vehicle in advance.

8. The vehicle vibration noise control system according to any one of claims 1 to 7, characterized in that: It also includes an active suspension, which is used to control the height of the vehicle body and adjust the vibration inside the vehicle.

9. An integrated chassis structure, characterized in that: The vehicle vibration and noise control system comprises the vehicle vibration and noise control system according to any one of claims 1 to 8.

10. A new energy vehicle, characterized in that: Comprising the integrated chassis structure of claim 9.

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