Motion sensitive security system

Details Motion sensitive security system Motion sensitive security system

1984-09-17

1986-04-22

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

Specific condition

73650, 73654, 340 65, 340571, G08B 2100

Patent

active

045845697

ABSTRACT:
The preferred arrangement utilizes a magnet suspended at the center of an elastic cord over a pickup coil. Movement of the magnet is sensed by the coil in that signals are generated by such movement. The signals are processed in the combination of a time delay circuit and a comparator to provide an output which is a measure of acceleration of the element on which the elastic cord is mounted and, in one form, by a measure of jerk in a similar time delay circuit and comparator combination.

REFERENCES:
patent: 4180811 (1979-12-01), Yoshimura et al.
patent: 4234876 (1980-11-01), Murai
patent: 4418337 (1983-11-01), Bader

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