救急車輌用回転式アクティブ制御ベッド

抄録

In emergency transportation, a patient receives the acceleration of the right-and-left direction when an ambulance turns a corner or changes a lane. Such acceleration causes the feeling of discomfort or carsickness. With the aim of realizing safe and kind transportation for patients, we prototyped the actively-controlled bed for an ambulance which reduces the patient's discomfort by rotating the bed around the body axis. The bed is actuated by a DC servo motor. The desired angle of the bed is calculated in real time from the right-and-left acceleration acting on a car, which is measured with the accelerometer located beside a driver. The purpose of this paper is to examine the effect of the rotating-type actively-controlled bed in terms of ride quality. In experiment, the subjects evaluate a degree of ride quality on a scale of five for every second. Compared to the normal fixed bed, the ride quality improves when the bed is actively controlled.