Bipolar interrogation for magnetostrictive transducers

• US 20040207390A1
• Filed: 04/21/2003
• Published: 10/21/2004
• Est. Priority Date: 04/21/2003
• Status: Active Grant

• Current Assignee: MTS Systems Corporation (Illinois Tool Works Inc.)
• Original Assignee: MTS Systems Corporation (Illinois Tool Works Inc.)
• Inventors: Sprecher, Arnold F.
• Granted Patent: US 7,292,025 B2
• Time in Patent Office: Days
• US Class Current: 324/207.13
• CPC Class Codes: G01D 5/485 using magnetostrictive devices

Abstract

A magnetostrictive-based sensor is disclosed which obtains higher return signals through the use of multiple consecutive input pulses.

Claims

1. A circuit for use with magnetostrictive device, comprising

a current pulse generator;

said current pulse generator generating at least two consecutive current pulses of opposite polarity.

2. The circuit of claim 1, wherein there are three consecutive current pulses, said first and second pulses being of opposite polarity and said second and third pulses being of opposite polarity.

3. The circuit of claim 1, wherein there are three consecutive current pulses, said first and third pulses being of the same polarity.

4. The circuit of claim 3, wherein said second pulse is of opposite polarity to said first pulse.

5. The circuit of claim 3, wherein said second pulse is of opposite polarity to said third pulse.