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Mechanical Engineering Commons

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1983

Electrical and Computer Engineering

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Full-Text Articles in Mechanical Engineering

Light Actuated Remote Control Security System, Jack C. Klaus, Larry D. Schroeder, Vincent H. Casteel, Kenneth E. Schwartz Oct 1983

Light Actuated Remote Control Security System, Jack C. Klaus, Larry D. Schroeder, Vincent H. Casteel, Kenneth E. Schwartz

Iowa State University Patents

A remote control security apparatus includes a lock element movable between locked and unlocked positions by an electrically actuated power device. The operator is provided with a portable transmitter adapted to generate light which is interrupted at a predetermined frequency so as to produce an encoded light signal. This signal is detected by a light transceiver which generates an independent signal at the same predetermined frequency and which compares the frequencies of the detected signal and independent signal. If these frequencies are substantially the same, the transceiver actuates the power means to move the lock element to its unlocked position ...