CN116985827A - Vehicle pose judging device for pre-warning of state of automobile shock absorber - Google Patents
Vehicle pose judging device for pre-warning of state of automobile shock absorber Download PDFInfo
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- 230000002159 abnormal effect Effects 0.000 abstract description 2
- 230000007480 spreading Effects 0.000 abstract description 2
- 238000013016 damping Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 5
- 230000007547 defect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
- B60W40/12—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models related to parameters of the vehicle itself, e.g. tyre models
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W50/02—Ensuring safety in case of control system failures, e.g. by diagnosing, circumventing or fixing failures
- B60W50/0205—Diagnosing or detecting failures; Failure detection models
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W50/08—Interaction between the driver and the control system
- B60W50/14—Means for informing the driver, warning the driver or prompting a driver intervention
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C11/00—Photogrammetry or videogrammetry, e.g. stereogrammetry; Photographic surveying
- G01C11/04—Interpretation of pictures
- G01C11/06—Interpretation of pictures by comparison of two or more pictures of the same area
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
- G01M17/04—Suspension or damping
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/0002—Inspection of images, e.g. flaw detection
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- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/10—Segmentation; Edge detection
- G06T7/11—Region-based segmentation
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- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/40—Extraction of image or video features
- G06V10/44—Local feature extraction by analysis of parts of the pattern, e.g. by detecting edges, contours, loops, corners, strokes or intersections; Connectivity analysis, e.g. of connected components
- G06V10/443—Local feature extraction by analysis of parts of the pattern, e.g. by detecting edges, contours, loops, corners, strokes or intersections; Connectivity analysis, e.g. of connected components by matching or filtering
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W2050/0001—Details of the control system
- B60W2050/0043—Signal treatments, identification of variables or parameters, parameter estimation or state estimation
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Abstract
The invention relates to a vehicle posture judging device for pre-warning of the state of an automobile shock absorber, which comprises the following components: the vehicle pose judging device is used for obtaining two frame sequence mapping images corresponding to the immediately acquired images of two continuous frames respectively to serve as a first image to be processed and a second image to be processed respectively, and judging whether to send out a bump transition signal or not based on imaging blocks of the vehicle objects in the first image to be processed and the second image to be processed; and the state early warning device is used for sending out a state early warning instruction of suspicious state of the shock absorber when receiving the jolt transition signal. The vehicle posture judging device for the state early warning of the automobile shock absorber is intelligent in design and wide in application. Because the intelligent analysis mechanism of the specific automobile gesture can be designed specially for the bumpy road section, and the reliable early warning of the faults of the shock absorber of the automobile running nearby the monitoring system can be completed on the basis of intelligent analysis data, the problem of further spreading of the abnormal automobile faults of the shock absorber running on the bumpy road section is avoided.
Description
Technical Field
The invention relates to the field of automobile parts, in particular to a vehicle pose judging device for early warning of the state of an automobile shock absorber.
Background
In the design of automobile parts, vibration is generated in a suspension system due to the impact of an elastic element, a shock absorber is arranged in parallel with the elastic element in the suspension for improving the running smoothness of an automobile, and the shock absorber is mostly a hydraulic shock absorber in the automobile suspension system for damping the vibration. At this time, the friction between the hole wall and the oil and the internal friction between the oil molecules form damping force to vibration, so that the vibration energy of the automobile is converted into the heat energy of the oil, and then absorbed by the shock absorber and emitted into the atmosphere. When the oil liquid channel section and other factors are unchanged, the damping force increases and decreases along with the relative movement speed between the vehicle frame and the vehicle axle (or the vehicle wheels), and is related to the viscosity of the oil liquid.
When a vehicle runs on a bumpy road, such as when the phenomenon of unstable vehicle body posture is found, a problem generally occurs in the shock absorber. However, in the prior art, a high-precision analysis mechanism for the vehicle body posture of the bumpy road section does not exist, so that the judgment of the shock absorber fault in the bumpy road section lacks a reliable basis, and effective early warning can not be carried out on a fault vehicle running nearby a monitoring system, thereby possibly causing a larger safety accident of the fault vehicle.
The prior art that may be referred to is:
1. the invention discloses a double-cylinder realization damping-changing structure for a shock absorber (application publication number: CN 114877004A), which comprises a shock absorbing unit, wherein the shock absorbing unit comprises a piston rod, an inner cylinder barrel, a piston head, a first one-way valve plate, a second one-way valve plate and an oil passing cavity, the piston rod is positioned in the inner cylinder barrel, the piston head is matched with the inner cylinder barrel, the oil passing cavity is arranged between the inner cylinder barrel and the outer cylinder barrel, a plurality of damping holes communicated with the oil passing cavity are formed in the side wall of the inner cylinder barrel, two ends of the inner cylinder barrel are respectively communicated with a first oil passing passage and a second oil passing passage, the first one-way valve plate is arranged at the first oil passing passage, and the second one-way valve plate is arranged at the second oil passing passage. The double-cylinder damping-changing structure for the shock absorber has the advantages that the damping-changing structure is realized by the double cylinders, the damping value can be automatically adjusted according to the bumping condition of the vehicle, the bumping of the vehicle is rapidly restrained, and the driver and the passengers are always in a comfortable state.
2. The invention discloses a technique for balancing and absorbing defects of road surfaces of vehicles such as automobiles (application publication number: CN 1699086A), and an embodiment 1 is as follows: the diamond-shaped frames are connected by a plurality of hinges and are connected with the shock absorber (device) through the connecting rod. Embodiment 2: the hydraulic damper is formed by connecting a plurality of oil cylinders through oil ways and shock absorbers (devices) and auxiliary spring devices. The road surface defect balancing technology can overcome and perfect the defect that the existing vehicle damping technology such as an automobile has poor damping effect on a concave road surface under the condition of keeping all advanced characteristics and performances of the existing vehicle damping technology such as an automobile, and the technical characteristics of the road surface defect balancing technology can enable a vehicle body and a carriage to tend to be in an ideal stable state in the running process of the vehicle. The technology can react to the mutual transmission of the bump displacement of the wheels.
Disclosure of Invention
In order to solve the technical problems in the related art, the invention provides a vehicle posture judging device for the state early warning of an automobile shock absorber, which can design a targeted intelligent analysis mechanism of the vehicle posture specially aiming at a bumpy road section and finish the reliable early warning of the shock absorber faults of the running automobile nearby a monitoring system on the basis of intelligent analysis data, thereby effectively maintaining the safety and stability of the running automobile in the bumpy road section.
The invention provides a vehicle posture judging device for early warning of the state of an automobile shock absorber, which comprises the following components:
the timing service component is arranged in the control box of the jounce road area accessory and is used for providing timing service for each connected component;
the ultra-clear acquisition component is arranged right in front of the bumpy road section and connected with the timing service component, and is used for performing image acquisition processing on the bumpy road section by adopting a first set frame rate so as to obtain an instant preview image corresponding to each acquisition moment;
the preview processing component is connected with the super-clear acquisition component and is used for triggering the super-clear acquisition component to execute image acquisition processing on the bumpy road section at a second set frame rate when an automobile object exists in the instant preview image acquired at the first set frame rate so as to acquire an instant acquisition image corresponding to each acquisition moment, wherein the second set frame rate is greater than the first set frame rate and the resolution of the instant acquisition image is higher than the resolution of the instant preview image;
the content mapping device is connected with the preview processing component and is used for executing point image restoration operation, median filtering operation and contrast enhancement operation on the received immediately acquired image sequence so as to obtain an order mapping image corresponding to the immediately acquired image;
the vehicle pose judging device is connected with the content mapping device and is used for obtaining two frames of sequence mapping images corresponding to two continuous frames of instant acquisition images respectively to be used as a first image to be processed and a second image to be processed, resolving imaging blocks of an automobile object in the first image to be processed and the second image to be processed respectively to be used as a first imaging block and a second imaging block based on standard contour patterns of the automobile object, overlapping the first image to be processed and the second image to be processed, obtaining the number of overlapped pixels of the first imaging block and the second imaging block, and sending out a bump transition signal when the number of overlapped pixels occupies the total number of pixels of the first imaging block to be processed is smaller than a set percentage limit, otherwise, sending out a bump controllable signal;
and the state early warning device is connected with the vehicle posture judging device and is used for sending out a state early warning instruction of suspicious shock absorber state when receiving the jolt transition signal and sending out a state normal instruction of valid shock absorber state when receiving the jolt controllable signal.
The vehicle posture judging device for the state early warning of the automobile shock absorber is intelligent in design and wide in application. Because the intelligent analysis mechanism of the specific automobile gesture can be designed specially for the bumpy road section, and the reliable early warning of the faults of the shock absorber of the automobile running nearby the monitoring system can be completed on the basis of intelligent analysis data, the problem of further spreading of the abnormal automobile faults of the shock absorber running on the bumpy road section is avoided.
Drawings
Embodiments of the present invention will be described below with reference to the accompanying drawings.
Fig. 1 is an internal structural view of a vehicle posture judging device for early warning of a state of a shock absorber of an automobile according to a first embodiment of the present invention.
Fig. 2 is an internal structural view of a vehicle posture judging device for early warning of a state of a shock absorber of an automobile according to a second embodiment of the present invention.
Fig. 3 is an internal structural view of a vehicle posture judging device for early warning of a state of a shock absorber of an automobile according to a third embodiment of the present invention.
Detailed Description
An embodiment of the vehicle posture determining device for pre-warning of the state of the shock absorber of the vehicle according to the present invention will be described in detail with reference to the accompanying drawings.
First embodiment
Fig. 1 is an internal structural view of a vehicle posture judging device for pre-warning of a state of a shock absorber of an automobile according to a first embodiment of the present invention, the device including:
the timing service component is arranged in the control box of the jounce road area accessory and is used for providing timing service for each connected component;
the ultra-clear acquisition component is arranged right in front of the bumpy road section and connected with the timing service component, and is used for performing image acquisition processing on the bumpy road section by adopting a first set frame rate so as to obtain an instant preview image corresponding to each acquisition moment;
illustratively, the ultra-clear acquisition component is internally provided with a photoelectric sensor and an ultra-clear lens, wherein the photoelectric sensor can be a CMOS sensor or a CCD sensor;
the preview processing component is connected with the super-clear acquisition component and is used for triggering the super-clear acquisition component to execute image acquisition processing on the bumpy road section at a second set frame rate when an automobile object exists in the instant preview image acquired at the first set frame rate so as to acquire an instant acquisition image corresponding to each acquisition moment, wherein the second set frame rate is greater than the first set frame rate and the resolution of the instant acquisition image is higher than the resolution of the instant preview image;
the content mapping device is connected with the preview processing component and is used for executing point image restoration operation, median filtering operation and contrast enhancement operation on the received immediately acquired image sequence so as to obtain an order mapping image corresponding to the immediately acquired image;
the vehicle pose judging device is connected with the content mapping device and is used for obtaining two frames of sequence mapping images corresponding to two continuous frames of instant acquisition images respectively to be used as a first image to be processed and a second image to be processed, resolving imaging blocks of an automobile object in the first image to be processed and the second image to be processed respectively to be used as a first imaging block and a second imaging block based on standard contour patterns of the automobile object, overlapping the first image to be processed and the second image to be processed, obtaining the number of overlapped pixels of the first imaging block and the second imaging block, and sending out a bump transition signal when the number of overlapped pixels occupies the total number of pixels of the first imaging block to be processed is smaller than a set percentage limit, otherwise, sending out a bump controllable signal;
the state early warning device is connected with the vehicle posture judging device and is used for sending out a state early warning instruction of suspicious shock absorber state when receiving the jolt transition signal and sending out a state normal instruction of valid shock absorber state when receiving the jolt controllable signal;
when an automobile object exists in the instant preview image acquired at the first set frame rate, triggering the ultra-clear acquisition component to execute image acquisition processing on the bumpy road section at the second set frame rate so as to acquire an instant acquisition image corresponding to each acquisition time comprises the following steps: and distinguishing whether image blocks which are matched with the standard outline pattern of the automobile object and occupy the area ratio of the automobile object to be detected in the instant preview image acquired at the first set frame rate are larger than or equal to a set ratio limit amount or not based on the standard outline pattern of the automobile object, and determining that the automobile object exists in the instant preview image acquired at the first set frame rate when distinguishing the existence.
Second embodiment
Fig. 2 is an internal structural diagram of a vehicle posture determining apparatus for early warning of a state of an automobile shock absorber according to a second embodiment of the present invention, and it can be seen that the vehicle posture determining apparatus for early warning of a state of an automobile shock absorber shown in the second embodiment of the present invention in fig. 2 may further include:
the timing service component is arranged in the control box of the jounce road area accessory and is used for providing timing service for each connected component;
the ultra-clear acquisition component is arranged right in front of the bumpy road section and connected with the timing service component, and is used for performing image acquisition processing on the bumpy road section by adopting a first set frame rate so as to obtain an instant preview image corresponding to each acquisition moment;
the preview processing component is connected with the super-clear acquisition component and is used for triggering the super-clear acquisition component to execute image acquisition processing on the bumpy road section at a second set frame rate when an automobile object exists in the instant preview image acquired at the first set frame rate so as to acquire an instant acquisition image corresponding to each acquisition moment, wherein the second set frame rate is greater than the first set frame rate and the resolution of the instant acquisition image is higher than the resolution of the instant preview image;
the content mapping device is connected with the preview processing component and is used for executing point image restoration operation, median filtering operation and contrast enhancement operation on the received immediately acquired image sequence so as to obtain an order mapping image corresponding to the immediately acquired image;
the vehicle pose judging device is connected with the content mapping device and is used for obtaining two frames of sequence mapping images corresponding to two continuous frames of instant acquisition images respectively to be used as a first image to be processed and a second image to be processed, resolving imaging blocks of an automobile object in the first image to be processed and the second image to be processed respectively to be used as a first imaging block and a second imaging block based on standard contour patterns of the automobile object, overlapping the first image to be processed and the second image to be processed, obtaining the number of overlapped pixels of the first imaging block and the second imaging block, and sending out a bump transition signal when the number of overlapped pixels occupies the total number of pixels of the first imaging block to be processed is smaller than a set percentage limit, otherwise, sending out a bump controllable signal;
the state early warning device is connected with the vehicle posture judging device and is used for sending out a state early warning instruction of suspicious shock absorber state when receiving the jolt transition signal and sending out a state normal instruction of valid shock absorber state when receiving the jolt controllable signal;
the pattern storage device is respectively connected with the vehicle pose judging device and the preview processing component and is used for respectively providing standard outline patterns of the automobile object for the vehicle pose judging device and the preview processing component;
the pattern storage device may be one of an MMC memory card, a FLASH memory device, or a TF memory card, for example.
Third embodiment
Fig. 3 is an internal structural view of a vehicle posture judging device for early warning of a state of an automobile shock absorber according to a third embodiment of the present invention, and it can be seen that the vehicle posture judging device for early warning of a state of an automobile shock absorber shown in the third embodiment of the present invention in fig. 3 may include:
the timing service component is arranged in the control box of the jounce road area accessory and is used for providing timing service for each connected component;
the ultra-clear acquisition component is arranged right in front of the bumpy road section and connected with the timing service component, and is used for performing image acquisition processing on the bumpy road section by adopting a first set frame rate so as to obtain an instant preview image corresponding to each acquisition moment;
the preview processing component is connected with the super-clear acquisition component and is used for triggering the super-clear acquisition component to execute image acquisition processing on the bumpy road section at a second set frame rate when an automobile object exists in the instant preview image acquired at the first set frame rate so as to acquire an instant acquisition image corresponding to each acquisition moment, wherein the second set frame rate is greater than the first set frame rate and the resolution of the instant acquisition image is higher than the resolution of the instant preview image;
the content mapping device is connected with the preview processing component and is used for executing point image restoration operation, median filtering operation and contrast enhancement operation on the received immediately acquired image sequence so as to obtain an order mapping image corresponding to the immediately acquired image;
the vehicle pose judging device is connected with the content mapping device and is used for obtaining two frames of sequence mapping images corresponding to two continuous frames of instant acquisition images respectively to be used as a first image to be processed and a second image to be processed, resolving imaging blocks of an automobile object in the first image to be processed and the second image to be processed respectively to be used as a first imaging block and a second imaging block based on standard contour patterns of the automobile object, overlapping the first image to be processed and the second image to be processed, obtaining the number of overlapped pixels of the first imaging block and the second imaging block, and sending out a bump transition signal when the number of overlapped pixels occupies the total number of pixels of the first imaging block to be processed is smaller than a set percentage limit, otherwise, sending out a bump controllable signal;
the state early warning device is connected with the vehicle posture judging device and is used for sending out a state early warning instruction of suspicious shock absorber state when receiving the jolt transition signal and sending out a state normal instruction of valid shock absorber state when receiving the jolt controllable signal;
and the synchronous control device is respectively connected with the preview processing component, the content mapping device and the vehicle posture judging device and is used for executing the pairwise synchronous control of the preview processing component, the content mapping device and the vehicle posture judging device.
Next, a specific structure of the vehicle posture determining device for early warning of the state of the shock absorber of the vehicle according to the present invention will be further described.
In the vehicle posture judging device for vehicle damper state warning according to any one of the embodiments of the present invention:
the preview processing part is also used for triggering the super-clear acquisition part to execute image acquisition processing on the bumpy road section at the first set frame rate when no automobile object exists in the instant acquisition image acquired at the second set frame rate;
the preview processing part is further configured to trigger the super-clear capturing part to perform image capturing processing on the bumpy road section at the first set frame rate when no automobile object exists in the immediate captured image captured at the second set frame rate, where the step of including: and distinguishing whether an image block which is matched with the standard contour pattern of the automobile object and occupies the area ratio of the immediately acquired image to be more than or equal to a set ratio limit exists in the immediately acquired image acquired at the second set frame rate based on the standard contour pattern of the automobile object, and determining that the automobile object does not exist in the immediately acquired image acquired at the second set frame rate when the image block is distinguished to not exist.
In the vehicle posture judging device for vehicle damper state warning according to any one of the embodiments of the present invention:
the device is arranged right in front of the bumpy road section and connected with the timing service component, and is used for executing image acquisition processing on the bumpy road section by adopting a first set frame rate so as to obtain a preview-in-time image corresponding to each acquisition time, and comprises the following steps: the timing service component provides time-sharing service operation of a first set frame rate or a second set frame rate for the ultra-clear acquisition component;
the time-sharing service operation of the timing service component for providing the first set frame rate or the second set frame rate for the ultra-clear acquisition component comprises the following steps: the ultra-clear acquisition component is provided with time-shared acquisition trigger actions at evenly spaced respective time points based on the first set frame rate or the second set frame rate.
In the vehicle posture judging device for vehicle damper state warning according to any one of the embodiments of the present invention:
the content mapping device is connected with the preview processing component and is used for performing point image restoration operation, median filtering operation and contrast enhancement operation on the received immediately acquired image sequence so as to obtain an order mapping image corresponding to the immediately acquired image, and comprises the following steps: the content mapping device comprises a first mapping unit, a second mapping unit, a third mapping unit and a micro control unit, wherein the micro control unit is respectively connected with the first mapping unit, the second mapping unit and the third mapping unit;
the content mapping device is connected with the preview processing component and is used for performing point image restoration operation, median filtering operation and contrast enhancement operation on the received instant acquisition image sequence so as to obtain an order mapping image corresponding to the instant acquisition image, and the content mapping device further comprises: the first mapping unit is respectively connected with the first mapping unit and the third mapping unit;
the content mapping device is connected with the preview processing component and is used for performing point image restoration operation, median filtering operation and contrast enhancement operation on the received instant acquisition image sequence so as to obtain an order mapping image corresponding to the instant acquisition image, and the content mapping device further comprises: the first mapping unit is used for executing point image restoration operation, the second mapping unit is used for executing median filtering operation, and the third mapping unit is used for executing contrast enhancement operation.
In addition, in the vehicle posture judging device for early warning of the state of the automobile shock absorber, two frames of sequentially mapped images corresponding to immediately acquired images of two continuous frames are obtained to be respectively used as a first image to be processed and a second image to be processed, imaging blocks of the automobile object in the first image to be processed and the second image to be processed are respectively analyzed based on standard contour patterns of the automobile object to be used as a first imaging block and a second imaging block, the first image to be processed and the second image to be processed are overlapped, the number of overlapped pixels of the first imaging block and the second imaging block is obtained, and when the number of overlapped pixels occupies the total number of pixels of the first imaging block, a bump transition signal is sent out, otherwise, a bump controllable signal is sent out, the bump controllable signal comprises: and judging that a certain image block is an imaging block of the automobile object in the first image to be processed when the edge curve of the certain image block is matched with the edge curve of the standard outline pattern of the automobile object in the first image to be processed and the pixel point occupied by the certain image block is out of limit.
It can be seen that the present invention has at least the following significant substantial features:
first,: two frames of targeted optimized images corresponding to immediately acquired images of two continuous frames are respectively obtained for a bumpy road section to be respectively used as a first to-be-processed image and a second to-be-processed image, imaging blocks of an automobile object in the first to-be-processed image and the second to-be-processed image are respectively analyzed based on standard contour patterns of the automobile object to be respectively used as a first imaging block and a second imaging block, overlapping is carried out on the first to-be-processed image and the second to-be-processed image, the number of overlapped pixels of the first imaging block and the second imaging block is obtained, and when the number of overlapped pixels occupies the total number of pixels of the first imaging block, a bumpy transition signal is sent out, otherwise, a bumpy controllable signal is sent out, so that targeted and high-precision identification of the change of the body posture of the bumpy road section is completed;
secondly: based on the characteristics of the vehicle body, which are generally problems of the shock absorber, when the vehicle runs to a bumpy road section, such as the phenomenon that the posture of the vehicle body is excessively bumpy and swaying is found, when a bumpy transition signal is received, a state early warning instruction of a suspicious state of the shock absorber is sent out, and when a bumpy controllable signal is received, a state normal instruction of the effective state of the shock absorber is sent out, so that intelligent detection of the state of the shock absorber is completed;
again: and only when a large-area automobile object exists in the preview picture with low resolution and low frame rate, the method starts the super-clear picture acquisition with high resolution and high frame rate and the intelligent detection of the state of the subsequent shock absorber, thereby effectively saving the running power consumption of the whole shock absorber monitoring system.
In the above, although the present disclosure discusses embodiments of the present invention and the accompanying drawings, the present invention is not limited thereto but may be variously modified and changed by those skilled in the art to which the present disclosure pertains without departing from the spirit and scope of the present disclosure as claimed in the appended claims.
Claims (9)
1. A vehicle pose judgment device for vehicle shock absorber state early warning, characterized in that the device comprises:
the timing service component is arranged in the control box of the jounce road area accessory and is used for providing timing service for each connected component;
the ultra-clear acquisition component is arranged right in front of the bumpy road section and connected with the timing service component, and is used for performing image acquisition processing on the bumpy road section by adopting a first set frame rate so as to obtain an instant preview image corresponding to each acquisition moment;
the preview processing component is connected with the super-clear acquisition component and is used for triggering the super-clear acquisition component to execute image acquisition processing on the bumpy road section at a second set frame rate when an automobile object exists in the instant preview image acquired at the first set frame rate so as to acquire an instant acquisition image corresponding to each acquisition moment, wherein the second set frame rate is greater than the first set frame rate and the resolution of the instant acquisition image is higher than the resolution of the instant preview image;
the content mapping device is connected with the preview processing component and is used for executing point image restoration operation, median filtering operation and contrast enhancement operation on the received immediately acquired image sequence so as to obtain an order mapping image corresponding to the immediately acquired image;
the vehicle pose judging device is connected with the content mapping device and is used for obtaining two frames of sequence mapping images corresponding to two continuous frames of instant acquisition images respectively to be used as a first image to be processed and a second image to be processed, resolving imaging blocks of an automobile object in the first image to be processed and the second image to be processed respectively to be used as a first imaging block and a second imaging block based on standard contour patterns of the automobile object, overlapping the first image to be processed and the second image to be processed, obtaining the number of overlapped pixels of the first imaging block and the second imaging block, and sending out a bump transition signal when the number of overlapped pixels occupies the total number of pixels of the first imaging block to be processed is smaller than a set percentage limit, otherwise, sending out a bump controllable signal;
and the state early warning device is connected with the vehicle posture judging device and is used for sending out a state early warning instruction of suspicious shock absorber state when receiving the jolt transition signal and sending out a state normal instruction of valid shock absorber state when receiving the jolt controllable signal.
2. The vehicle posture judging device for vehicle shock absorber state early warning according to claim 1, wherein:
when an automobile object exists in the instant preview image acquired at the first set frame rate, triggering the ultra-clear acquisition component to execute image acquisition processing on the bumpy road section at the second set frame rate so as to acquire an instant acquisition image corresponding to each acquisition time comprises the following steps: and distinguishing whether image blocks which are matched with the standard outline pattern of the automobile object and occupy the area ratio of the automobile object to be detected in the instant preview image acquired at the first set frame rate are larger than or equal to a set ratio limit amount or not based on the standard outline pattern of the automobile object, and determining that the automobile object exists in the instant preview image acquired at the first set frame rate when distinguishing the existence.
3. The vehicle posture judging device for vehicle damper state early warning according to claim 2, characterized in that the device further comprises:
and the pattern storage device is respectively connected with the vehicle gesture judging device and the preview processing component and is used for respectively providing standard outline patterns of the automobile object for the vehicle gesture judging device and the preview processing component.
4. The vehicle posture judging device for vehicle damper state early warning according to claim 2, characterized in that the device further comprises:
and the synchronous control device is respectively connected with the preview processing component, the content mapping device and the vehicle posture judging device and is used for executing the pairwise synchronous control of the preview processing component, the content mapping device and the vehicle posture judging device.
5. The vehicle posture judging device for pre-warning of the state of an automobile shock absorber according to any one of claims 2 to 4, wherein:
the preview processing part is also used for triggering the ultra-clear acquisition part to execute image acquisition processing on the bumpy road section at the first set frame rate when no automobile object exists in the instant acquisition images acquired at the second set frame rate.
6. The vehicle posture judging device for early warning of the state of a shock absorber of a vehicle according to claim 5, wherein:
the preview processing part is further configured to trigger the super-clear capturing part to perform image capturing processing on the bumpy road section at the first set frame rate when no automobile object exists in the immediate capturing image captured at the second set frame rate, including: and distinguishing whether an image block which is matched with the standard contour pattern of the automobile object and occupies the area ratio of the immediately acquired image to be more than or equal to a set ratio limit exists in the immediately acquired image acquired at the second set frame rate based on the standard contour pattern of the automobile object, and determining that the automobile object does not exist in the immediately acquired image acquired at the second set frame rate when the image block is distinguished to not exist.
7. The vehicle posture judging device for pre-warning of the state of an automobile shock absorber according to any one of claims 2 to 4, wherein:
the device is arranged right in front of the bumpy road section and connected with the timing service component, and is used for executing image acquisition processing on the bumpy road section by adopting a first set frame rate so as to obtain a preview-in-time image corresponding to each acquisition time, and comprises the following steps: the timing service component provides time-sharing service operation of a first set frame rate or a second set frame rate for the ultra-clear acquisition component;
the time-sharing service operation of the timing service component for providing the first set frame rate or the second set frame rate for the ultra-clear acquisition component comprises the following steps: the ultra-clear acquisition component is provided with time-shared acquisition trigger actions at evenly spaced respective time points based on the first set frame rate or the second set frame rate.
8. The vehicle posture judging device for pre-warning of the state of an automobile shock absorber according to any one of claims 2 to 4, wherein:
the content mapping device is connected with the preview processing component and is used for performing point image restoration operation, median filtering operation and contrast enhancement operation on the received immediately acquired image sequence so as to obtain an order mapping image corresponding to the immediately acquired image, and comprises the following steps: the content mapping device comprises a first mapping unit, a second mapping unit, a third mapping unit and a micro control unit, wherein the micro control unit is respectively connected with the first mapping unit, the second mapping unit and the third mapping unit;
the content mapping device is connected with the preview processing component and is used for performing point image restoration operation, median filtering operation and contrast enhancement operation on the received instant acquisition image sequence so as to obtain an order mapping image corresponding to the instant acquisition image, and the content mapping device further comprises: the first mapping unit is respectively connected with the first mapping unit and the third mapping unit.
9. The vehicle posture judging device for vehicle shock absorber state pre-warning according to claim 8, wherein:
the content mapping device is connected with the preview processing component and is used for performing point image restoration operation, median filtering operation and contrast enhancement operation on the received immediately acquired image sequence so as to obtain an order mapping image corresponding to the immediately acquired image, and the content mapping device further comprises: the first mapping unit is used for executing point image restoration operation, the second mapping unit is used for executing median filtering operation, and the third mapping unit is used for executing contrast enhancement operation.
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