Automated detector balance

Details Automated detector balance Automated detector balance

1996-02-15

1997-09-23

Glick, Edward J.

Radiant energy

Invisible radiant energy responsive electric signalling

With or including a luminophor

25036308, G01T 11166

Patent

active

056707835

ABSTRACT:
A gamma camera and a counterweight are mounted to a support structure. A motor causes the support structure to move about a pivot axis. A controller measures the rate of motion of the support structure and compares that rate to a predetermined rate. The controller causes a second motor to move the counterweight a distance based on the difference between the measured and predetermined rates. The process is repeated until the difference is less than a threshold value. In a second embodiment, the current drawn by the motor is measured. The controller causes the counterweight to move a distance based on the measured current. The support structure is rotated about an axis of rotation to a 90 degree position prior to moving the support structure and to a 0 degree position prior to moving the counterweight.

REFERENCES:
patent: 4216381 (1980-08-01), Lange
patent: 4692625 (1987-09-01), Hanz et al.
patent: 5047641 (1991-09-01), Besseling et al.

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