Radiant energy – Photocells; circuits and apparatus – Signal isolator
Patent
1990-11-29
1991-11-12
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Signal isolator
33561, G02B 2700
Patent
active
050650351
ABSTRACT:
Various techniques are disclosed for controlling the operation of a workpiece inspection procedure using a battery operated probe to contact the workpiece and transmit information back to a controller in a machine tool system. In one embodiment, battery power is applied to the probe transmission circuitry in response to a flash of infrared radiation. In another embodiment, the probe is turned on by touching the probe against a reference surface. In both embodiments, a timer is provided to automatically disconnect the batteries after a predetermined time period. In such manner battery life is prolonged.
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Allen S.
GTE Valenite Corporation
Nelms David C.
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