CN-122016335-A - Automobile brake detection system

CN122016335ACN 122016335 ACN122016335 ACN 122016335ACN-122016335-A

Abstract

The application discloses an automobile brake detection system, relates to the technical field of vehicle detection, and solves the technical problem that the safety of an existing automobile is reduced due to the fact that the brake system is difficult to detect in time; the system comprises a data acquisition module, a brake detection module, a data acquisition module, a data analysis module and a control module, wherein the data acquisition module acquires pedal pressure and wheel rotating speed of a brake pedal in real time through data acquisition equipment connected with the data acquisition module, the brake detection module acquires pressure data of the brake pedal, groups the pressure data to obtain a plurality of pressure data groups, generates theoretical deceleration according to the pressure data of each pressure data group, acquires wheel rotating speeds corresponding to each pressure data group, generates deviation coefficients according to the wheel rotating speeds and the theoretical deceleration, generates alarm signals according to the deviation coefficients, analyzes the pedal pressure and the wheel rotating speeds in the braking process in real time, ensures that abnormal conditions of an automobile brake system can be timely detected, and improves safety in the running process of an automobile.

Inventors

SHAO YONGMING
Yu Bingshuo
YANG WENYUE
LU YUWEN
MENG HAO
DAI RUI
GUO WEIFENG

Assignees

安徽三联学院

Dates

Publication Date: 20260512
Application Date: 20260129

Claims (10)

1. The automobile brake detection system comprises a data acquisition module, a brake detection module and a database, and is characterized in that, The data acquisition module acquires the pedal pressure and the wheel rotating speed of a brake pedal in real time through data acquisition equipment connected with the data acquisition module; The brake detection module is used for acquiring pressure data of a brake pedal, grouping the pressure data to obtain a plurality of pressure data sets, generating theoretical deceleration according to the pressure data of each pressure data set, acquiring wheel rotating speeds corresponding to each pressure data set, generating deviation coefficients according to the wheel rotating speeds and the theoretical deceleration, and generating alarm signals according to the deviation coefficients.
2. The vehicle brake detection system of claim 1, wherein grouping pressure data into a plurality of said pressure data sets comprises: the method comprises the steps of extracting pedal pressure corresponding to each acquisition time in pressure data, fitting the pedal pressure into a pedal pressure change curve according to the corresponding acquisition time, dividing the pedal pressure change curve into a plurality of pedal pressure change curve segments according to a set pedal pressure interval, dividing a plurality of pedal pressure data corresponding to the pedal pressure curve segments into a pressure data set, and sequentially obtaining a plurality of pedal pressure data sets.
3. The vehicle brake detection system according to claim 1, wherein the generating a theoretical deceleration from the pressure data of each pressure data set includes: the average value of the pressure of each pedal in each pressure data set is obtained and marked as a characteristic pressure value of the pressure data set, and the characteristic pressure value is input into a deceleration pre-estimation model to obtain the pre-estimated deceleration corresponding to the pressure data set; The method comprises the steps of obtaining a plurality of historical braking data through a database, generating a transmission influence coefficient according to the historical braking data, generating theoretical deceleration according to the transmission influence coefficient and the estimated deceleration, and sequentially obtaining the theoretical deceleration corresponding to each pressure data set.
4. The vehicle brake detection system of claim 3, wherein the deceleration pre-estimation model is trained from an artificial intelligence model, comprising: the method comprises the steps of acquiring a plurality of pedal pressures and corresponding decelerations thereof through a database, integrating the pedal pressures and decelerations into a plurality of groups of training data and checking data; training the artificial intelligent model by using training data, checking the trained artificial intelligent model by using checking data to obtain an artificial intelligent model with the input of pedal pressure and the output of the artificial intelligent model as the corresponding deceleration, outputting the deceleration as the predicted deceleration, and finally obtaining a deceleration pre-estimated model with the input of pedal pressure and the output of the deceleration pre-estimated model as the predicted deceleration.
5. The vehicle brake detection system of claim 3, wherein the generating a transfer impact coefficient from historical brake data comprises: extracting several pressure data groups from the historical brake data, and its correspondent historical deceleration and recording time, obtaining the correspondent historical deceleration of several pressure data groups of same set interval, and marking them as I is the number of the pressure data group in the same set interval, and the pressure characteristic value in each pressure data group is extracted and marked as ; By the formula Calculating to obtain a transmission influence coefficient YX, wherein I is the total number of pressure data sets in the same set interval; the weight coefficient corresponding to the pressure data set with the number of i; and sequentially acquiring the transmission influence coefficients corresponding to the set intervals.
6. A vehicle brake detection system according to claim 3, wherein said generating a theoretical deceleration from the transmission influence coefficient and the estimated deceleration comprises: Acquiring a transmission influence coefficient of a pressure data set corresponding to the estimated deceleration; By the formula Calculating to obtain a theoretical deceleration LV corresponding to the estimated deceleration, wherein YV is the estimated deceleration; And sequentially acquiring theoretical deceleration corresponding to each estimated deceleration.
7. The vehicle brake detection system according to claim 6, wherein the generating a deviation coefficient based on the wheel rotation speed and the theoretical deceleration includes: The method comprises the steps of obtaining wheel speeds corresponding to pedal pressures in pressure data sets, calculating according to the wheel speeds to obtain average actual deceleration corresponding to the pressure data sets, obtaining theoretical deceleration corresponding to the pressure data sets, obtaining deceleration difference values by making differences between the average actual deceleration and the theoretical deceleration corresponding to the average actual deceleration, carrying out weighted summation on the deceleration difference values corresponding to the pressure data sets to obtain comprehensive deviation values, and taking the comprehensive deviation values as deviation coefficients.
8. The vehicle brake detection system of claim 1, wherein the generating an alert signal based on the coefficient of deviation comprises: And judging whether the deviation coefficient is larger than a set deceleration deviation threshold value, if so, generating a braking system abnormality warning signal, and if not, generating a braking system abnormality warning signal when the deviation coefficient is not zero, wherein the warning signal comprises a braking system abnormality warning signal and a braking system abnormality warning signal.
9. The vehicle brake detection system of claim 1, further comprising an early warning module for alerting based on the alert signal.
10. The vehicle brake detection system of claim 1, wherein the database is configured to store pressure data and its corresponding wheel speeds, comprising: When the pedal pressure returns to zero again, a plurality of pressure data sets and corresponding average actual deceleration are acquired, and are sequentially stored according to the sequence of the first acquisition time corresponding to the pedal pressure in the pressure data sets.

Description

Automobile brake detection system Technical Field The application belongs to the technical field of vehicle detection, relates to a vehicle detection technology, and particularly relates to an automobile brake detection system. Background With the gradual popularization of automobiles and the entering of thousands of households, the domestic automobile demand presents a situation of rapid increase, the automobile industry is raised as a supporting industry, and in view of the characteristic that the automobiles run at high speed on the road, the safety of the automobiles not only concerns the life and property safety of drivers and passengers, but also drives the safety of other pedestrians on the road. Therefore, the detection of the performance of a vehicle braking system is particularly important, and is an indispensable and critical ring in the production of a plurality of detection projects of automobiles. The detection of the existing automobile braking system usually depends on regular maintenance and manual inspection, the safety of the manual inspection is higher, but the efficiency is lower, the real-time monitoring requirement of the modern automobile on the braking system is difficult to meet, the automobile can be influenced by various random events such as severe weather, abrupt change of road conditions and the like during running, the factors can potentially influence the braking system, or a driver can not safely use the automobile for a long time, so that the braking system is abnormal, the driver can find relevant maintenance personnel to carry out inspection and maintenance when an accident happens, the braking system cannot be detected timely, the probability of out-of-control of the braking system is increased, and the safety of the driver is further influenced, and therefore the automobile braking detection system is needed. Disclosure of Invention The application aims to at least solve one of the technical problems in the prior art, and therefore, the application provides an automobile brake detection system which is used for solving the technical problem that the safety of an automobile is reduced because the existing automobile is difficult to detect a brake system in time. In order to achieve the aim, the first aspect of the application provides an automobile brake detection system, which comprises a data acquisition module, a brake detection module, an early warning module and a database; the data acquisition module acquires the pedal pressure and the wheel rotating speed of a brake pedal in real time through data acquisition equipment connected with the data acquisition module; The brake detection module is used for acquiring pressure data of a brake pedal, wherein the pressure data is pedal pressure acquired from the beginning of the braking to the current acquisition time, grouping the pressure data to obtain a plurality of pressure data sets, generating theoretical deceleration according to the pressure data of each pressure data set, acquiring wheel rotating speeds corresponding to each pressure data set, generating deviation coefficients according to the wheel rotating speeds and the theoretical deceleration, and generating alarm signals according to the deviation coefficients. The method comprises the steps of acquiring the pedal pressure and the wheel rotating speed of a brake pedal in the current braking process in real time, grouping the pressure data to obtain a plurality of pressure data sets, generating theoretical deceleration according to the pressure data of each pressure data set, acquiring the wheel rotating speed corresponding to each pressure data set, generating a deviation coefficient according to the wheel rotating speed and the theoretical deceleration, generating an alarm signal according to the deviation coefficient, analyzing the pedal pressure and the wheel rotating speed in the braking process in real time, judging whether a braking system is abnormal, ensuring that the abnormal condition of the braking system of an automobile can be timely detected, and improving the safety of the automobile in the driving process. Preferably, grouping the pressure data to obtain a plurality of pressure data sets includes: The method comprises the steps of acquiring pressure data, extracting pedal pressure corresponding to each acquisition time in the pressure data, fitting the pedal pressure into a pedal pressure change curve according to the corresponding acquisition time, dividing the pedal pressure change curve into a plurality of pedal pressure change curve segments according to a set pedal pressure interval, dividing a plurality of pedal pressure data corresponding to the pedal pressure curve segments into a pressure data set, and sequentially obtaining a plurality of pedal pressure data sets; Preferably, the generating the theoretical deceleration from the pressure data of each pressure data set includes: the average value of the pressure of each pedal in each