During rescue transport road roughness causes vibrations to the patient which may lead to further dangerous injuries due to the already worse health condition of the patient. Up to now, additional isolation systems inside the rescue vehicles were designed as passive spring damper systems with low stiffness. The damping necessary to reduce the large response in resonance leads to a drastic loss in isolation performance. With the adaptive isolation system developed by ERAS the large response in resonance is actively reduced below 5 dB, providing the advantage of a maximum isolation at the same time. Adaptive isolation systems are already operated in so called baby-ambulances. The goal is a market introduction for general purpose ambulances. For automobiles there are contradictory demands for good driving characteristics in the dynamical point of view and a good vibration isolation of the passengers. A compromise has to be found depending on the target group the vehicles are manufactured for: sport cars with optimal driving characteristics and a poor vibration isolation. bulk serial cars with good driving characteristics and acceptable vibration isolation for healthy, upright sitting persons. rescue cars (without additional isolation system in the cabin) with poor driving characteristics but (not sufficiently) improved vibration isolation for lying patients. The poor driving characteristics may lead to uneasiness or sea-sickness of the attending rescue staff. This consideration lead to the following demand for rescue vehicles with additional patient isolation system: driving characteristics comparable with bulk serial cars, patient vibration isolation by an additional isolation system as good as possible.
Active isolation device for ambulance transport
Aktives Isolationsgerät für Beförderung mit Krankenwagen
2000
8 Seiten, 7 Bilder
Conference paper
English