Radiation-activated sensor

Details Radiation-activated sensor Radiation-activated sensor

1974-12-05

1976-10-19

Miller, Jr., Stanley D.

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

307251, 328 6, 340237S, G01T 118, H03K 1760, H03K 342

Patent

active

039873196

ABSTRACT:
A sensing system for use in a remote location which detects electromagnetic adiation energy, the system being self-activating, turning itself automatically on and off, as a function of radiation intensity across the detector. In essence, when no radiation is present across the detector, the system will consume no power, the switches and MOSFET discriminator being essentially in an "off" position. Radiation across the detector provides a current to an input capacitance which when charged turns on the switch and the MOSFET discriminator. A switch driver produces an output pulse showing the presence of radiation; the system then shuts off awaiting the next radiation input. Since the sensor system uses virtually no power unless radiation is present, it is ideally suited for use in remote environments where battery power and size is a predominant consideration.

REFERENCES:
patent: 3378820 (1968-04-01), Alafi et al.
patent: 3594751 (1971-07-01), Ogden
patent: 3603949 (1971-09-01), Walthard
patent: 3665441 (1972-05-01), Suchomel et al.
patent: 3673586 (1972-06-01), Blackwell

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