CA2171216A1 - Laser sensor capable of measuring distance, velocity, and acceleration - Google Patents

Laser sensor capable of measuring distance, velocity, and acceleration

Info

Publication number
CA2171216A1
CA2171216A1 CA002171216A CA2171216A CA2171216A1 CA 2171216 A1 CA2171216 A1 CA 2171216A1 CA 002171216 A CA002171216 A CA 002171216A CA 2171216 A CA2171216 A CA 2171216A CA 2171216 A1 CA2171216 A1 CA 2171216A1
Authority
CA
Canada
Prior art keywords
signal
velocity
phase difference
acceleration
laser sensor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002171216A
Other languages
French (fr)
Other versions
CA2171216C (en
Inventor
Mark L. Wilson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Honeywell Inc
Original Assignee
Mark L. Wilson
Honeywell Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US08/130,054 external-priority patent/US5396510A/en
Application filed by Mark L. Wilson, Honeywell Inc. filed Critical Mark L. Wilson
Publication of CA2171216A1 publication Critical patent/CA2171216A1/en
Application granted granted Critical
Publication of CA2171216C publication Critical patent/CA2171216C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

A light based distance, velocity and acceleration sensor which uses phase difference to determine the desired measurement. A laser signal is modulated by an oscillator signal and reflected off an object to a signal receiver. The reflected laser signal and the oscillator signal then pass through a dual path conditioning circuit, where the path lengths and circuit elements of the two paths are identical to cancel the effets of propagation delays in an output signal. The conditioned signals are passed through a phase comparator, to produce a signal indicative of the phase difference between the oscillator signal and the reflected laser signal. The phase difference is directly proportional to the distance between the sensor and the object.
CA002171216A 1993-09-30 1994-09-28 Laser sensor capable of measuring distance, velocity, and acceleration Expired - Fee Related CA2171216C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/130,054 US5396510A (en) 1993-09-30 1993-09-30 Laser sensor capable of measuring distance, velocity, and acceleration
US08/130,054 1993-09-30
PCT/US1994/010978 WO1995009370A2 (en) 1993-09-30 1994-09-28 Laser sensor capable of measuring distance, velocity, and acceleration

Publications (2)

Publication Number Publication Date
CA2171216A1 true CA2171216A1 (en) 1995-04-06
CA2171216C CA2171216C (en) 2006-04-11

Family

ID=36178078

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002171216A Expired - Fee Related CA2171216C (en) 1993-09-30 1994-09-28 Laser sensor capable of measuring distance, velocity, and acceleration

Country Status (1)

Country Link
CA (1) CA2171216C (en)

Also Published As

Publication number Publication date
CA2171216C (en) 2006-04-11

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed