Portable laser scanning system and scanning methods having a mot

Details Portable laser scanning system and scanning methods having a mot Portable laser scanning system and scanning methods having a mot

1989-10-30

1991-03-26

Pitts, Harold I.

Registers

Coded record sensors

Particular sensor structure

235467, G06K 710

Patent

active

050031643

ABSTRACT:
A lightweight hand-held scanning device for repetitively scanning a laser light source across a target having a laser light generating means and at least one high speed scanning motor controlled by a motor amplitude regulator circuit which automatically controls the amplitude of oscillation of the shaft of the high speed scanning motor. The amplitude control is accomplished by using a closed loop control system that supplies the ac stator windings of the scanning motor with periodic triangular current waveforms for energizing and de-energizing the ac stator coils. The signal that closes the control loop is a feedback signal obtained from the dc stator windings of the motor which indicates the amplitude of oscillation. By controlling the amplitude of oscillation, the high speed scanning motor can maintain a consistent scanning speed and use less power.

REFERENCES:
patent: 3631274 (1971-12-01), Stauder
patent: 3636317 (1972-01-01), Torrey
patent: 3774014 (1973-11-01), Berler
patent: 3818467 (1974-06-01), Willis
patent: 4025761 (1977-05-01), Hayosh et al.
patent: 4041322 (1977-08-01), Hayosh et al.
patent: 4251798 (1981-02-01), Swartz
patent: 4387297 (1983-06-01), Swartz et al.
patent: 4496831 (1985-01-01), Swartz et al.
patent: 4593186 (1986-06-01), Swartz et al.

Affiliated with

Also associated with

Rating

Portable laser scanning system and scanning methods having a mot does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Portable laser scanning system and scanning methods having a mot, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Portable laser scanning system and scanning methods having a mot will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-618926