Title:
ULTRASONIC RANGING IN THE NEAR ZONE
Document Type and Number:
WIPO Patent Application WO2006099601
Kind Code:
A3
Abstract:
An ultrasonic ranging device (100) for ultrasonic ranging in the near zone. The device may include a transducer (135) for generating an ultrasonic signal and for detecting an echo signal. The device may also include a processor (110) for calculating the distance to a target object based on a first time period defined by a first set of ultrasonic signals when the target object is located outside the near zone and a second time period defined by a second set of ultrasonic signals when the target object is located within the near zone. The processor may also adjust the amplitude of the generated ultrasonic signal until the first set of ultrasonic signals is detected at the transducer.
Inventors:
HAFER KEVIN G (US)
Application Number:
PCT/US2006/009890
Publication Date:
November 02, 2006
Filing Date:
March 16, 2006
Export Citation:
Assignee:
AMETEK INC (US)
HAFER KEVIN G (US)
HAFER KEVIN G (US)
International Classes:
G01S15/18
Foreign References:
| US4733355A | 1988-03-22 | |||
| US20040239651A1 | 2004-12-02 |
Other References:
See also references of EP 1869498A4
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