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EP-4283337-B1 - AUTOMOBILE CHASSIS SCRAPING CONTROL METHOD, APPARATUS, AND COMPUTER STORAGE MEDIUM

EP4283337B1EP 4283337 B1EP4283337 B1EP 4283337B1EP-4283337-B1

Inventors

  • TONG, Yang

Dates

Publication Date
20260506
Application Date
20210122

Claims (7)

  1. A computer implemented method for controlling vehicle chassis bottoming, comprising: receiving a pressure signal; generating a target waveform according to the pressure signal; acquiring calibration information; extracting a preset number of target key points from the target waveform based on the calibration information; and determining that the vehicle chassis bottoming occurs to trigger alarm processing when a corresponding value of the target key point in the target waveform matches with the calibration information; wherein the calibration information comprises region calibration information; the region calibration information comprises a plurality of calibration region waveforms and region calibration key points corresponding to the plurality of calibration region waveforms; and the extracting a preset number of target key points from the target waveform based on the calibration information comprises: acquiring region division information about the plurality of calibration region waveforms; performing region division on the target waveform according to the region division information to obtain a plurality of target region waveforms corresponding to the plurality of calibration region waveforms; and extracting region target key points from the plurality of target region waveforms as the preset number of target key points based on the region calibration key points; wherein before the step of determining that the vehicle chassis bottoming occurs when a corresponding value of the target key point in the target waveform matches with the calibration information, the method further comprises: acquiring a matching region waveform matching with the calibration region waveform in the plurality of target region waveforms; determining the number of matching regions of the matching region waveform; determining that the corresponding value of the target key point in the target waveform matches with the calibration information when the number of matching regions is greater than a first preset threshold; and determining that the vehicle chassis bottoming occurs when the corresponding value of the target key point in the target waveform matches with the calibration information; and characterized in that , after determining the number of matching regions of the matching region waveform, the method further comprises: acquiring region sequence number information about the matching region waveform; sorting the sequence number information; determining a difference value between adjacent sequence number information based on the sorting to obtain a difference value set; and determining that the vehicle chassis bottoming occurs to trigger alarm processing when the difference values in the difference value set are all less than a third preset threshold.
  2. The method for controlling vehicle chassis bottoming according to claim 1, characterized in that , when the pressure signal comprises a plurality of pressure signals, the generating a target waveform according to the pressure signal comprises: generating a plurality of initial waveforms corresponding to the plurality of pressure signals; fitting the plurality of initial waveforms to generate a fitted waveform; and taking the fitted waveform as the target waveform.
  3. The method for controlling vehicle chassis bottoming according to claim 1, characterized in that the calibration information includes calibration key points, and the extracting a preset number of target key points from the target waveform based on the calibration information comprises: extracting a preset number of target key points from the target waveform based on the calibration key points.
  4. The method for controlling vehicle chassis bottoming according to claim 1, characterized in that the acquiring a matching region waveform matching with the calibration region waveform in the plurality of target region waveforms comprises: acquiring the number of matching region target key points in each target region waveform with the region calibration key points in the corresponding calibration region waveform; and taking the target region waveform of which the number of values of the region target key points in the target region waveform matching with the values of the corresponding region calibration key points in the calibration region waveform is greater than a second preset threshold as a matching region waveform.
  5. The method for controlling vehicle chassis bottoming according to claim 1, characterized in that , the determining that the vehicle chassis bottoming occurs when a corresponding value of the target key point in the target waveform matches with the calibration information comprises: determining that bottoming of the vehicle chassis occurs when the corresponding absolute value of the target key point in the target waveform matches with a corresponding absolute value of the calibration key point in the calibration waveform.
  6. A device for controlling vehicle chassis bottoming, comprising a processor and a transceiver , wherein the processor and the transceiver are connected to a memory, the memory is configured to store a computer program, and the processor is configured to execute the computer program stored in the memory, to enable the terminal device to perform the method according to any one of claims 1 to 5.
  7. A computer-readable storage medium, characterized in that the storage medium has stored therein at least one instruction, at least one piece of program, a set of codes, or a set of instructions, which are loaded and executed by a processor to implement the method for controlling vehicle chassis bottoming according to any one of claims 1 to 5.

Description

Technical Field The present application relates to the technical field of vehicle bottoming safety, and particularly relates to a method and a device for controlling vehicle chassis bottoming, and a computer storage medium. Background Art It is very easy for the vehicle chassis to have bottoming when the vehicle runs on uneven road sections, which may cause great damage to the chassis, leaving great safety risks. For example, when the vehicle has bottoming, there may be obvious deformation of the battery pack shell, or the bottom shell of the battery pack invades the inside of the battery pack, or the battery cell and other components are deformed, or the whole module remains intact, but the battery cell is slightly deformed, etc. These situations are all potential factors for battery-related accidents, which may lead to the occurrence of vehicle fire and deflagration in a serious case. However, at present, there is no warning prompt for the vehicle after the vehicle has bottoming, and there is a great risk if the user continues to use the vehicle. The published US patent application US2020/161717A1 relates to a safety apparatus for a battery. The published German patent application DE102013001325A1 relates to a method for operating a vehicle component of a vehicle by means of a control device as a function of a safety state of the vehicle that can be evaluated at predeterminable times. The published German patent application DE102018130881A1 relates to a traction battery of a motor vehicle and a motor vehicle. Summary of the Invention The technical problem to be solved by the present application is that the monitoring and pre-warning of a bottoming event cannot be achieved and the driving risk is high in the prior art. In order to solve the problem existing in the prior art, the present application provides a method and a device for controlling vehicle chassis bottoming, and a computer storage medium. According to an aspect of the present application, a method for controlling vehicle chassis bottoming according to claim 1 is provided. In a possible implementation, the method for controlling vehicle chassis bottoming includes: receiving a pressure signal; generating a target waveform according to the pressure signal;acquiring calibration information;extracting a preset number of target key points from the target waveform based on the calibration information; anddetermining that the vehicle chassis bottoming occurs to trigger alarm processing when a corresponding value of the target key point in the target waveform matches with the calibration information. In an implementable solution, when the pressure signal comprises a plurality of pressure signals, the generating a target waveform according to the pressure signal comprises: generating a plurality of initial waveforms corresponding to the plurality of pressure signals;fitting the plurality of initial waveforms to generate a fitted waveform; andtaking the fitted waveform as the target waveform. In an implementable solution, the calibration information includes calibration key points, and the extracting a preset number of target key points from the target waveform based on the calibration information comprises: extracting a preset number of target key points from the target waveform based on the calibration key points. According to the claimed invention, the calibration information comprises region calibration information; the region calibration information comprises a plurality of calibration region waveforms and region calibration key points corresponding to the plurality of calibration region waveforms; and the extracting a preset number of target key points from the target waveform based on the calibration information comprises: acquiring region division information about the plurality of calibration region waveforms;performing region division on the target waveform according to the region division information to obtain a plurality of target region waveforms corresponding to the plurality of calibration region waveforms; andextracting region target key points from the plurality of target region waveforms as the preset number of target key points based on the region calibration key points. According to the claimed invention, before the step of determining that the vehicle chassis bottoming occurs when a corresponding value of the target key point in the target waveform matches with the calibration information, the method further comprises: acquiring a matching region waveform matching with the calibration region waveform in the plurality of target region waveforms;determining the number of matching regions of the matching region waveform;determining that the corresponding value of the target key point in the target waveform matches with the calibration information when the number of matching regions is greater than a first preset threshold; anddetermining that the vehicle chassis bottoming occurs when the corresponding value of the target key point in th