| 摘要 |
<p>Apparatus includes two ultrasonic transducers (142, 144) which are mountable relative to a steerable wheel (47) of the vehicle to each transmit an ultrasonic signal to a target location on the steerable wheel (47), which target locations are on the same side of and equally oppositely spaced from the centre (152) of the steerable wheel (47) along a generally horizontal diametrical line (154). Each transducer (142, 144) provides an output electrical signal representative of the distance between the transducer and its target location. The output electrical signals are combinable (160) to provide a signal representative of the magnitude of steering movements of the steerable wheel (47). The signal representative of the steering movements can be used in apparatus for simulated driving to deflect computer driven virtual scenic imagery to simulate turning of the vehicle in synchronism with the steering actions of the driver.</p> |
