Ground velocity sensor with drop-out detection

Details Ground velocity sensor with drop-out detection Ground velocity sensor with drop-out detection

1984-12-20

1988-03-01

Tubbesing, T. H.

Communications: directive radio wave systems and devices (e.g.,

Determining velocity

Digital

342 92, 342195, 367 91, G01S 1360

Patent

active

047289546

ABSTRACT:
A vehicle-mounted ultrasonic velocity sensor includes an ultrasonic transmitter and receiver coupled to transmit and receive horns. In one embodiment, a phase-locked-loop signal processing circuit converts the transmitted and reflected frequencies into a signal indicative of the vehicle velocity. In another embodiment, velocity data is obtained by measuring the period of a certain number of cycles of the reflected signal using a pair of counters, one counting at a rate equal to the reflected frequency, the other counting at a fixed rate. In both embodiments, the variable magnitude reflected signal is applied to an input of a drop-out detection circuit whose output is then connected to an input or inputs of the velocity determining circuits to prevent velocity detection during dropout periods.
The velocity sensor may be implemented utilizing radar components.

REFERENCES:
patent: 3618084 (1971-11-01), Balsiger et al.
patent: 4172256 (1979-10-01), Pacozzi
patent: 4181432 (1980-01-01), Flower
patent: 4316173 (1982-02-01), Matsumura et al.
patent: 4320398 (1982-03-01), Fritzlen
patent: 4389648 (1983-06-01), Luscombe et al.
patent: 4489321 (1984-12-01), Hoffa et al.
patent: 4527160 (1985-07-01), Endo et al.
patent: 4568939 (1986-02-01), Grau
patent: 4635059 (1987-01-01), Ball

Affiliated with

Also associated with

Rating

Ground velocity sensor with drop-out detection does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Ground velocity sensor with drop-out detection, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ground velocity sensor with drop-out detection will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1001105