首页>
外国专利>
'device and method for measuring the movement speed of a wheeled land vehicle and wheeled land vehicle'
'device and method for measuring the movement speed of a wheeled land vehicle and wheeled land vehicle'
展开▼
机译:“测量轮式陆地车辆和轮式陆地车辆的运动速度的装置和方法”
展开▼
页面导航
摘要
著录项
相似文献
摘要
A device for measuring the speed of movement of a wheeled terrestrial vehicle. A magnetometer takes measurements of an ambient terrestrial magnetic field and is positioned so as to be sensitive to the magnetic field variations caused by the rotation of at least one partially metallic wheel of the vehicle. The magnetometer delivers a corresponding signal. The signal is processed to establish a frequency spectrum thereof. From the frequency spectrum, a frequency of rotation of the wheel is determined, and deducing therefrom, on the basis of information representative of the radius of the wheel, the speed of movement of the vehicle.
展开▼