CN114953885A - Vehicle vibration noise control system, integrated chassis structure and new energy automobile - Google Patents
Vehicle vibration noise control system, integrated chassis structure and new energy automobile Download PDFInfo
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- CN114953885A CN114953885A CN202210452703.2A CN202210452703A CN114953885A CN 114953885 A CN114953885 A CN 114953885A CN 202210452703 A CN202210452703 A CN 202210452703A CN 114953885 A CN114953885 A CN 114953885A
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- 238000012544 monitoring process Methods 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims description 16
- 230000008569 process Effects 0.000 claims description 11
- 239000000725 suspension Substances 0.000 claims description 4
- 238000004364 calculation method Methods 0.000 claims description 2
- 238000007781 pre-processing Methods 0.000 description 6
- 230000009467 reduction Effects 0.000 description 5
- 230000002035 prolonged effect Effects 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 238000002366 time-of-flight method Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
- B60G17/016—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by their responsiveness, when the vehicle is travelling, to specific motion, a specific condition, or driver input
- B60G17/0165—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by their responsiveness, when the vehicle is travelling, to specific motion, a specific condition, or driver input to an external condition, e.g. rough road surface, side wind
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
- B60G2400/80—Exterior conditions
- B60G2400/82—Ground surface
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2500/00—Indexing codes relating to the regulated action or device
- B60G2500/30—Height or ground clearance
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2800/00—Indexing codes relating to the type of movement or to the condition of the vehicle and to the end result to be achieved by the control action
- B60G2800/90—System Controller type
- B60G2800/91—Suspension Control
- B60G2800/916—Body Vibration Control
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Abstract
The present invention provides a vehicle vibration noise control system, including: the system comprises a monitoring module, an acquisition 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 end of the vehicle-mounted radar and the output end of the vehicle-mounted camera are connected with the input end of the acquisition module, the output end of the acquisition module is connected with the input end of the processing module, the output end of the processing module is connected with the input end of the first identification module, the output end of the first identification module is connected with the first input end of the control module, and the output end of the second identification module is connected with the second input end of the control module.
Description
Technical Field
The invention relates to the field of new energy automobiles, in particular to a vehicle vibration noise control system, an integrated chassis structure and a new energy automobile.
Background
During driving, the vehicle usually encounters rough road conditions, or causes vibration and noise in the vehicle.
At present, a vibration sensor arranged on a chassis or a vehicle body is mainly adopted for recognizing the road surface to acquire real-time vibration signals in the driving process of a vehicle for analysis, then the vibration of the vehicle is suppressed by different vibration reduction measures, or the real-time road surface information or the noise in the vehicle is acquired by a vehicle vibration noise sensor, the scheme needs a vibration noise control system to respond in real time, has high requirement on the influence speed of the vibration noise control system, and has no preprocessing time and sufficient response time,
disclosure of Invention
The invention provides a vehicle vibration noise control system, an integrated chassis structure and a new energy automobile, and aims to solve the problem that the conventional vehicle vibration noise control system is short of preprocessing time.
According to a first aspect of the present invention, there is provided a vehicle vibration noise control system comprising: the system comprises a monitoring module, an acquisition 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 with the input end of the acquisition module, the output end of the acquisition module is connected with the input end of the processing module, the output end of the processing module is connected with the input end of the first identification module, the output end of the first identification module is connected with the first input end of the control module, and the output end of the second identification module is connected with the second input end of the control module;
the vehicle-mounted radar is used for: monitoring first road information of a front road surface in the running process of a vehicle;
the vehicle-mounted camera is used for: monitoring second road surface information of a front road surface in the running process of the vehicle;
the processing module is used for: converting the first road information and the second road information into a first road digital signal and a second digital road signal;
the first identification module is configured to: acquiring and identifying the first road surface digital signal and the second digital road surface signal to obtain current road surface information, and sending the current road surface information to the control module;
the second identification module is configured to: identifying current vehicle information and sending the current vehicle information to the control module;
the control module is used for: controlling vibration and noise in the vehicle in advance based on the current road surface information and the current vehicle information.
Optionally, in the driving process of the vehicle, monitoring first road information of a front road surface includes:
the vehicle-mounted radar irradiates the front road surface by transmitting signals and receives reflected signals of the front road surface;
obtaining first road surface information of the front road surface based on the transmitting signal and the reflecting signal;
wherein the first road surface information is characterized by distance information and orientation information between the front road surface and the vehicle.
Optionally, the acquisition module includes: the system comprises a first acquisition module and a second acquisition module;
the first acquisition module is used for: collecting the first road information and sending the first road information to the processing module;
the second acquisition module is used for: collecting the second road information and sending the second road information to the processing module;
and the second road surface information is characterized by the image of the front road surface shot by the vehicle-mounted camera.
Optionally, the processing module includes a photosensitive assembly circuit and a control assembly, the photosensitive assembly circuit and the control assembly are configured to: and processing the image of the front road surface and converting the image into the second digital road surface signal.
Optionally, the second digital pavement signal includes: a road surface leveling signal and a road surface unevenness signal;
the first identification module is specifically configured to: and identifying the road surface unevenness signal and sending the road surface unevenness signal to the control module.
Optionally, the current vehicle information specifically includes: vehicle speed information, brake information, steering information, and throttle information of the vehicle.
Optionally, the control module includes a computing unit;
the computing unit is to: calculating a travel time required for the vehicle to travel to the front road surface based on the distance information between the front road surface and the vehicle speed information.
Optionally, the control module is specifically configured to: based on the travel time, a time at which the control module starts operating is determined to control vibration and noise in the vehicle in advance.
Optionally, the vehicle vibration noise control system further comprises an active suspension for: control the height of the vehicle body and regulate the vibration in the vehicle.
According to a second aspect of the present invention, there is provided an integrated chassis structure comprising the vehicle vibration noise control system of the first aspect.
According to a third aspect of the present invention, there is provided a new energy automobile, including the integrated chassis structure according to the second aspect.
According to the vehicle vibration noise control system, the integrated chassis structure and the new energy automobile, the vehicle-mounted radar and the vehicle-mounted camera are arranged, so that the road surface information of the front road surface is monitored and analyzed, the accuracy of the road surface information is improved, further, the pre-judgment on the condition of the front road surface is realized, and the reaction preprocessing time of the vehicle vibration noise control system is prolonged.
In a preferred embodiment, since the information identified by the second identification module includes a vehicle speed and a steering signal, the driving time required for the vehicle to drive to the road surface ahead can be calculated based on the information such as the vehicle speed and the steering signal, thereby further increasing the response time of the vehicle vibration noise control system.
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 embodiments or the description of 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.
FIG. 1 is a first schematic diagram of a vehicle vibration noise control system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a vehicle vibration noise control system according to an embodiment of the present invention.
Description of reference numerals:
1-a monitoring module;
101-vehicle radar;
102-a vehicle-mounted camera;
2-an acquisition module;
201-a first acquisition module;
202-a second acquisition module;
3-a processing module;
4-a first identification module;
5-a control module;
6-a second identification module.
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 obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims, as well as in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The technical solution of the present invention will be described in detail below with specific examples. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.
At present, a vibration sensor arranged on a chassis or a vehicle body is mainly adopted for road surface identification to acquire and analyze real-time vibration signals in the driving process of a vehicle, and then the vibration of the vehicle is inhibited through different vibration reduction measures. The method has no pre-judgment measure for road surface identification, and has high requirements on the data processing calculation force of the vibration reduction system and the response speed of the vibration reduction system.
In view of the above, the present invention provides a vehicle vibration noise control system. Referring to fig. 1 and 2, the present invention provides a vehicle vibration noise control system, including: the monitoring system comprises a monitoring module 1, an acquisition module 2, a processing module 3, a first identification module 4, a second identification module 6 and a control module 5, wherein the monitoring module 1 comprises a vehicle-mounted radar 101 and a vehicle-mounted camera 102.
Specifically, the output of the vehicle-mounted radar 101 and the output of the vehicle-mounted camera 102 are connected to the input of the acquisition module 2, the output of the acquisition module 2 is connected to the input of the processing module 3, the output of the processing module 3 is connected to the input of the first recognition module 4, the output of the first recognition module 4 is connected to the first input of the control module 5, and the output of the second recognition module 6 is connected to the second input of the control module 5.
Wherein the vehicle radar 101 is configured to: monitoring first road surface information of a front road surface during the running of the vehicle.
Wherein the vehicle-mounted camera 102 is configured to: second road surface information of a road surface ahead is monitored during vehicle travel.
Wherein the processing module 3 is configured to: and converting the first road information and the second road information into a first road digital signal and a second digital road signal.
Wherein the first identification module 4 is configured to: and acquiring and identifying the first road surface digital signal and the second digital road surface signal, obtaining current road surface information, and sending the current road surface information to the control module.
Wherein the second identification module 6 is configured to: and identifying the current vehicle information and sending the current vehicle information to the control module.
Wherein the control module 5 is configured to: controlling vibration and noise in the vehicle in advance based on the current road surface information and the current vehicle information.
The vehicle-mounted radar 101 includes a vehicle-mounted laser radar, a millimeter wave radar, and an ultrasonic radar.
Of course, the invention is not limited thereto, and other types of vehicle-mounted radars are within the scope of the invention.
In an example, the current vehicle information specifically includes: vehicle speed information, brake information, steering information, and throttle information of the vehicle.
In a specific embodiment, the vehicle speed, brake, steering and throttle signals (i.e., the current vehicle information) may be used to perform an estimation on the motion state of the vehicle, and then the vehicle vibration noise control system may be controlled to operate in conjunction with the identified road information (i.e., the second road information), for example, the specific time when the vehicle vibration noise control system starts to operate may be determined based on the vehicle speed information.
In the scheme, the vehicle-mounted radar and the vehicle-mounted camera are arranged to monitor and analyze the road surface information of the front road surface, so that the precision of the road surface information is improved, further, the situation of the front road surface is pre-judged, and the reaction pre-processing time of the vehicle vibration noise control system is prolonged.
As a preferred embodiment, the control module 5 comprises a computing unit configured to: calculating a travel time required for the vehicle to travel to the front road surface based on the distance information between the front road surface and the vehicle speed information.
Wherein the control module 5 is specifically configured to: based on the travel time, a time at which the control module starts operating is determined to control vibration and noise in the vehicle in advance.
Specifically, the distance between the vehicle and the front road surface is determined by the vehicle radar 101, and the control module 5 can calculate the time required for the vehicle to travel to the front road surface in the current vehicle state by the vehicle state determined by the brake information, the steering information, and the accelerator information in the current vehicle information and by combining the vehicle speed information in the current vehicle information, and respond to the vehicle vibration noise control system in advance.
In the scheme, the time required by the vehicle to travel to the front road surface is calculated through the vehicle radar 101 and the current vehicle information, so that the vehicle vibration noise control system has preprocessing time and is adjusted based on the road surface information, and the comfort and the smoothness of the vehicle during running are improved.
Regarding obtaining the first road surface information, the monitoring the first road surface information of the road surface ahead during the running of the vehicle includes:
the vehicle-mounted radar 101 irradiates the front road surface through a transmitting signal and receives a reflected signal of the front road surface;
and obtaining first road surface information of the front road surface based on the transmitting signal and the reflected signal.
Wherein the first road surface information is characterized by distance information and orientation information between the front road surface and the vehicle.
Specifically, the first road surface information further includes a distance change rate between the front road surface and the vehicle, and height information.
In one example, the transmission signal and the reflection signal include: laser beams, electromagnetic waves, and ultrasonic waves.
Of course, the invention is not limited thereto, and other signals are within the scope of the invention.
In a specific embodiment, the vehicle-mounted radar 101 emits a laser beam, an electromagnetic wave, and an ultrasonic wave to irradiate a road surface ahead (i.e., emit a signal) and receives an echo (i.e., a reflected signal) thereof, thereby obtaining information such as a distance from the road surface ahead to a signal emission point, a distance change rate, an azimuth, and a height.
In a preferred embodiment, the vehicle-mounted radar is a laser radar which mainly uses a laser transmitter to transmit laser and receive returned information to describe the surface morphology of the road surface in front.
In one example, the detection principle of the lidar is a time-of-flight method, in which a distance to a target object (i.e., a distance from a front road surface to a signal emission point) is obtained based on a round-trip time of a detection light pulse by continuously transmitting a light pulse to the front road surface and then receiving light returning from the front road surface with a sensor.
In another example, the distance from the front road surface to the signal emission point may be measured by a continuous wave modulation method or a coherent heterodyne method, and finally, a plurality of laser beams form a point cloud signal (i.e., a first digital road surface signal) by swinging and scanning the front road surface of the vehicle, so as to describe the front road surface information. With respect to the acquisition module 2, please continue to refer to fig. 2, the acquisition module 2 includes: a first acquisition module 201 and a second acquisition module 202;
the first acquisition module 201 is configured to: collecting the first road information and sending the first road information to the processing module 3;
the second acquisition module 202 is configured to: collecting the second road information and sending the second road information to the processing module 3;
wherein the second road information is characterized by the image of the front road captured by the vehicle-mounted camera 102.
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 configured to: and processing the image of the front road surface and converting the image into the second digital road surface signal.
Specifically, the second digital pavement signal includes: a road surface leveling signal and a road surface unevenness signal;
the first identification module is specifically configured to: and identifying the road surface unevenness signal and sending the road surface unevenness signal to the control module.
In a specific embodiment, after the vehicle-mounted camera 102 collects an image, the photosensitive component circuit and the control component process the image and convert the image into a digital signal (i.e., a second digital road signal) that can be processed by a computer, and the image is identified by image matching, so that the road information in front of the vehicle is sensed, and specifically, the unevenness of the road is mainly identified.
As a preferred embodiment, when the camera is used to collect the image of the front road surface, different algorithms are used based on the configurations of different cameras, in an example, the monocular vision camera calculates the distance (i.e. the distance from the front road surface to the signal emission point) according to the size of the target after image matching; in another example, the binocular vision camera measures the distance (i.e. the distance from the front road surface to the signal emission point) by calculating the parallax of two images of the two cameras; in other examples, the multi-view camera is configured to cover scenes in different ranges by matching a plurality of different cameras.
In the scheme, the unevenness of the road surface can simultaneously cause vibration and noise in the vehicle, and the preprocessing time of the vehicle vibration noise control system is prolonged by recognizing the unevenness of the road surface in advance, so that the vibration and noise in the vehicle are more accurately reduced.
In one embodiment, the vehicle vibration noise control system. An active suspension is also included.
Wherein the active suspension is configured to: control the height of the vehicle body and regulate the vibration in the vehicle.
In other embodiments, the active sound production and noise reduction technology is adopted to reduce noise in the vehicle, specifically, after the sound wave of the noise is analyzed, reverse sound waves are sent through the vehicle-mounted sound equipment to superpose and neutralize the noise, and therefore the effect of eliminating the noise is achieved.
The invention also provides an integrated chassis structure comprising the vehicle vibration noise control system.
In addition, the invention also provides a new energy automobile which comprises the integrated chassis structure.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (11)
1. A vehicle vibration noise control system, comprising: the system comprises a monitoring module, an acquisition 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 with the input end of the acquisition module, the output end of the acquisition module is connected with the input end of the processing module, the output end of the processing module is connected with the input end of the first identification module, the output end of the first identification module is connected with the first input end of the control module, and the output end of the second identification module is connected with the second input end of the control module;
the vehicle-mounted radar is used for: monitoring first road information of a front road surface in the running process of a vehicle;
the vehicle-mounted camera is used for: monitoring second road surface information of a front road surface in the running process of the vehicle;
the processing module is used for: converting the first road information and the second road information into a first road digital signal and a second digital road signal;
the first identification module is configured to: acquiring and identifying the first road surface digital signal and the second digital road surface signal to obtain current road surface information, and sending the current road surface information to the control module;
the second identification module is configured to: identifying current vehicle information and sending the current vehicle information to the control module;
the control module is used for: controlling 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, wherein the monitoring of the first road surface information of the road surface ahead during the running of the vehicle includes:
the vehicle-mounted radar irradiates the front road surface by transmitting signals and receives reflected signals of the front road surface;
obtaining first road surface information of the front road surface based on the transmitting signal and the reflecting signal;
wherein the first road surface information is characterized by distance information and orientation information between the front road surface and the vehicle.
3. The vehicle vibration noise control system according to claim 2, wherein the acquisition module includes: the device comprises a first acquisition module and a second acquisition module;
the first acquisition module is used for: collecting the first road information and sending the first road information to the processing module;
the second acquisition module is used for: collecting the second road information and sending the second road information to the processing module;
and the second road surface information is characterized by the image of the front road surface shot by the vehicle-mounted camera.
4. The vehicle vibration noise control system of claim 1, wherein the processing module includes a photosensitive component circuit and a control component for: and processing the image of the front road surface and converting the image into the second digital road surface signal.
5. The vehicle vibration noise control system according to claim 4, wherein the second digital road surface signal includes: a road surface leveling signal and a road surface unevenness signal;
the first identification module is specifically configured to: and identifying the road surface unevenness signal and sending the road surface unevenness signal to the control module.
6. The vehicle vibration noise control system according to claim 1, wherein the current vehicle information specifically includes: vehicle speed information, brake information, steering information, and throttle information of the vehicle.
7. The vehicle vibration noise control system according to claim 6, wherein the control module includes a calculation unit;
the computing unit is to: and calculating the driving time required by the vehicle to drive to the front road surface based on the distance information between the front road surface and the vehicle speed information.
8. The vehicle vibration noise control system according to claim 7,
the control module is specifically configured to: based on the travel time, a time at which the control module starts operating is determined to control vibration and noise in the vehicle in advance.
9. The vehicle vibration noise control system according to any one of claims 1 to 8, characterized by further comprising an active suspension for: controlling the height of the vehicle body and adjusting the vibration in the vehicle.
10. An integrated chassis structure characterized by comprising the vehicle vibration noise control system according to any one of claims 1 to 9.
11. A new energy automobile, characterized by comprising the integrated chassis structure of claim 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210452703.2A CN114953885A (en) | 2022-04-27 | 2022-04-27 | Vehicle vibration noise control system, integrated chassis structure and new energy automobile |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210452703.2A CN114953885A (en) | 2022-04-27 | 2022-04-27 | Vehicle vibration noise control system, integrated chassis structure and new energy automobile |
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| CN202210452703.2A Pending CN114953885A (en) | 2022-04-27 | 2022-04-27 | Vehicle vibration noise control system, integrated chassis structure and new energy automobile |
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