Method and system for line bleed detection for a brake-by-wire system

CN119779604BActive Publication Date: 2026-07-10ZHEJIANG LIUHE IND CO LTD
View PDF 2 Cites -1 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ZHEJIANG LIUHE IND CO LTD
Filing Date
2025-01-03
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

Existing methods for detecting leaks in brake-by-wire systems rely on a single sensor, which cannot comprehensively and accurately reflect the health status of the braking system, especially when pressure loss occurs due to temperature fluctuations or other reasons, resulting in low detection accuracy.

Method used

By acquiring pipeline temperature, longitudinal acceleration, and pipeline pressure, and combining preset temperature and pressure thresholds, anomaly detection is performed. The relative vibration anomaly value is calculated through longitudinal acceleration, generating pipeline leakage signals and actuator anomaly signals, and finally, braking status is determined.

Benefits of technology

It improves the accuracy of pipeline leak detection, reduces the false alarm rate, enhances the ability to identify different levels of leakage, and enables precise control over the health status of the line-controlled braking system.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN119779604B_ABST
    Figure CN119779604B_ABST
Patent Text Reader

Abstract

This invention relates to the field of vehicle brake-by-wire technology, and discloses a method and system for detecting pipeline leaks in brake-by-wire systems. The method includes acquiring pipeline temperature, longitudinal acceleration, and pipeline pressure; determining temperature anomalies based on the pipeline temperature and a preset temperature threshold to obtain a temperature anomaly signal, and determining pressure anomalies based on the pipeline pressure and a preset pressure threshold to obtain a pressure anomaly signal; performing vibration analysis based on the longitudinal acceleration to obtain a relative vibration anomaly value; generating a pipeline leak signal when either the temperature anomaly signal or the pressure anomaly signal is received, and the relative vibration anomaly value is greater than a preset first vibration threshold; generating an actuator anomaly signal based on the relative vibration anomaly value; and determining the braking state based on the pipeline leak signal and the actuator anomaly signal to generate a leak detection result. This method can improve the accuracy of pipeline detection.
Need to check novelty before this filing date? Find Prior Art