Device for measuring impact pulses

Details Device for measuring impact pulses Device for measuring impact pulses

1975-12-15

1977-01-25

Gill, James J.

Measuring and testing

Testing by impact or shock

Specimen impactor detail

73 714, 73492, G01N 330, G01M 700

Patent

active

040044505

ABSTRACT:
A device for measuring impact pulses wherein an acceleration pickup converts the mechanical vibrations of an object into electric signals passing through an amplifier unit to a meter for measuring the parameters of the impact pulse. This meter comprises two null-indicators, one of which is connected electrically and directly with the amplifier unit while the other one is connected across a voltage divider connected to a source of a reference voltage, two pulse shapers connected to the null-indicators, two AND-NOT logical elements connected with the pulse shapers and a H.F. pulse generator. The meter comprises one more AND-NOT logical element connected with one of said AND-NOT logical elements and with the most significant and least significant decades, the least significant decade being connected with the other one of said AND-NOT logical elements. Further, said meter comprises a digital-to-analog converter connected with the most and least significant decades and null-indicators, and an indicator connected to said most and least significant decades.

REFERENCES:
patent: 3780274 (1973-12-01), Thompson et al.
patent: 3833797 (1974-09-01), Grobman et al.
patent: 3930248 (1975-12-01), Keller

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