Systems and methods of reducing a component of a signal caused by vibration
AssigneeCarnes Company, Inc.
InventorJoseph S. Simon
Life of this patent
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Abstract
A vibration detection circuit. The circuit includes an accelerometer, a combining filter, an amplifier, and an analog to digital converter. The accelerometer generates one or more signals indicative of movement along an axis. The combining filter filters a component of the one or more signals not associated with movement and combines the components of the one or more signals indicative of movement to create a combined signal. The amplifier amplifies the combined signal and creates an amplified signal. The analog to digital converter converts the amplified signal into a digital value.
Claims12
A method of reducing a vibration component of a detection signal in a metal detector, the method comprising:
- detecting movement of the metal detector on a first axis;
- generating a first signal indicative of the movement on the first axis;
- and
- modifying a detection signal based at least on the first signal.
A method of reducing a vibration component of a detection signal in a metal detector, the method comprising:
- detecting movement of the metal detector on a first axis;
- generating a first signal indicative of the movement on the first axis;
- and
- detecting movement of the metal detector on a second axis orthogonal to the first axis;
- generating a second signal indicative of the movement on the second axis;
- and
- combining the first and second signals to create a combined signal;
- modifying a detection signal based on the combined signal using scaling and/or subtraction.
Dependencies are inferred from the claim text.