Boots – shoes – and leggings
Patent
1994-01-12
1995-09-26
Teska, Kevin J.
Boots, shoes, and leggings
364561, 364562, 364701, 73627, 342137, 356 501, G01S 1308, G01S 1500, G01B 1114
Patent
active
054539323
ABSTRACT:
An ultrasonic ranging device and method for positioning a working implement relative to a datum is disclosed. The ultrasonic ranging device is coupled to the implement and is capable of transmitting an ultrasonic ranging pulse toward the datum and further capable of detecting the occurrence of an echo of the ranging pulse. The ultrasonic ranging device periodically makes a ranging measurement by transmitting an ultrasonic pulse toward the datum and then detecting the occurrence of any echo within a time interval, and repeats this ranging step at a predetermined repetition rate. The ultrasonic ranging device also detects any spurious echoes by detecting the occurrence of an echo within the time interval following no transmission of an ultrasonic pulse. If a spurious echo is detected, then the predetermined repetition rate is changed so that the spurious echo will not interfere with a ranging interval.
REFERENCES:
patent: 4000650 (1977-01-01), Snyder
patent: 4414792 (1983-11-01), Bettencourt et al.
patent: 4630226 (1986-12-01), Tanaka
patent: 4663712 (1987-05-01), Kishida
patent: 4731762 (1988-03-01), Hanks
patent: 4733355 (1988-03-01), Davidson et al.
patent: 4831565 (1989-05-01), Woodward
patent: 4914593 (1990-04-01), Middleton et al.
patent: 4992998 (1991-02-01), Woodward
patent: 5036477 (1991-07-01), Forster et al.
patent: 5075878 (1991-12-01), Ohtomo et al.
patent: 5079751 (1992-01-01), Woodward
patent: 5102220 (1992-04-01), Tiedeke
patent: 5107449 (1992-04-01), Ikuta
Cai et al., "Accurate Digital Time-Of-Flight Measurement Using Self-Interference", IEEE Dec. 1993--pp. 990-994.
Wang et al., "Analysis of Low-Order Autoregressive Models for Ultrasonic Grain Signal Characterization", IEEE 1991, pp. 116-124.
Maslin, "A Simple Ultrasonic Ranging System", presented at the 102nd Convention of the Audio Engineering Society on May 12, 1983.
Advanced Grade Technology, Inc.
Nguyen Tan
Teska Kevin J.
LandOfFree
Device and method for detecting and elimination of spurious ultr does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Device and method for detecting and elimination of spurious ultr, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device and method for detecting and elimination of spurious ultr will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1555840