Steering wheel lock having an ultrasonic-wave alarm system

Abstract

A steering wheel lock having an ultrasonic-wave alarm system includes a lock main body to be mounted on a steering wheel so that the rotation of the steering wheel is constrained and an anti-theft alarm circuit located within an outer shell of the lock main body, which is activated upon the engagement of the lock main body and the steering wheel. The anti-theft alarm circuit further includes at least a set of detecting unit and a central processing unit (CPU) for detecting a moving body in the automobile. The detecting unit consists of an ultrasonic wave emitter for sending ultrasonic waves toward the inner space of the automobile and an ultrasonic wave receiver for receiving and treating the reflected waves. The treated signals are sent to the CPU for recognition. If the signals are anomalous, the anti-theft alarm circuit will start a predetermined alarming process to scare away suspicious people and to notify the automobile owner.

Dependencies are inferred from the claim text.