Brake monitoring system for hydraulic brake system of motor vehicle e.g. car, has evaluation device for determining moisture content in brake fluid or quality characteristics of brake fluid based on impedance characteristics of cable

摘要

The system has a cable (4) with two lines, where the cable is provided for brake fluid (5), which is stored in a brake fluid reservoir (2). An evaluation device (10) determines impedance characteristics of the cable and determines moisture content in the brake fluid or quality characteristics of the brake fluid based on the impedance characteristics of the cable. The evaluation device determines a retention period of an electrical signal that is reflected in the cable. The evaluation device determines a fluid level (6) of the brake fluid based on the retention period. An independent claim is also included for a method for monitoring a hydraulic brake system of a motor vehicle.