A vehicle ride height sensing system including an encoded electromagnetic source 30 to output an encoded signal at a specified frequency, two magnetometers 31, 54, wherein one magnetometer 54 is located at a fixed distance from the source, and a controller (110, Fig.2) configured to extract the encoded signal and determine ride height. The second magnetometer may be provided for calibration means. Preferably, the magnetometers are Hall Effect based sensors, and are cable of sensing multi-axis magnetic fields. The electromagnetic source could be capable of high switching rates. Alternatively, the system comprises an encoded electromagnetic source, one or two magnetometers, first and second inertial movement units located on the axle and body respectively, and a controller to determine ride height based on the relative positions of the units. This may be achieved through dead reckoning. Preferably, the first inertial movement unit is an accelerometer.
Extensions and performance improvements for non-contact ride height sensing
2018-06-13
Patent
Electronic Resource
English
IPC: | B60G VEHICLE SUSPENSION ARRANGEMENTS , Radaufhängungen und Federungen für Fahrzeuge / G01B MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS , Messen der Länge, der Dicke oder ähnlicher linearer Abmessungen / G01D MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE , Anzeigen oder Aufzeichnen in Verbindung mit Messen allgemein |
Extensions and performance improvements for non-contact ride height sensing
European Patent Office | 2019
|EXTENSIONS AND PERFORMANCE IMPROVEMENTS FOR NON-CONTACT RIDE HEIGHT SENSING
European Patent Office | 2018
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