System and Method for Discriminating Between Origins of Vibrations in an Object and Determination of Contact Between Blunt Bodies Traveling in a Medium

摘要

A system and method for accurately detecting contact between two objects in a medium comprises at least one sensor for detecting vibration of a first of the two objects and a central processing unit (CPU) for receiving an output of the at least one sensor, wherein the CPU performs the steps: converting the output of the sensor into digital form; during a calibration phase, changing the data from time domain to frequency domain; and during the calibration phase, determining a first frequency range associated with actual contact between the two objects, and a second frequency range associated with a false positive contact between the two objects. A signal processor is provided for filtering all data except that which falls within the first frequency range so as to confirm actual contact between the objects.

主权项

1. A system for accurately detecting contact between two objects in a medium comprising:
at least one sensor for detecting vibration of a first of the two objects; a central processing unit (CPU) for receiving an output of the at least one sensor, wherein the CPU performs the steps:
converting the output of the at least one sensor into digital form;during a calibration phase, changing the data from time domain to frequency domain; andduring the calibration phase, determining a first frequency range associated with actual contact between the two objects, and a second frequency range associated with a false positive contact between the two objects; a storage device for storing the first frequency range and the second frequency range; and a signal processor for filtering all data except that which falls within the first frequency range so as to confirm actual contact between the objects.