Built-in test equipment for sonobuoy
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorsAlbert M. Bates, Anthony J. Madera
Life of this patent
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Abstract
Test equipment is employed within a conventional sonobuoy system for selfsting operational signal parameters of the sonobuoy. Sonobuoy reference and phase pilot signals and modulator carrier signals are sequentially sampled and compared with reference signal levels to drive failure indicators which note the respective signal failures.
Claims11
Built-in equipment for self testing a plurality of operating signals within a sonobuoy, comprising, in combination:
- sampling means adapted to receive the operating signals for sampling respective ones of the operating signals and for sequentially producing sample signals thereof;
- reference means for generating a plurality of reference signals each indicative of the tolerance level of a respective one of the operating signals;
- and
- comparison means connected to receive said sample and reference signals for comparing the corresponding respective ones of said sample and reference signals and for producing tolerance signals each indicative of a respective one of the operating signals when beyond its tolerance level.
Built-in equipment for self testing the reference pilot, phase pilot and X and Y modulator carrier operating signals of a sonobuoy, comprising, in combination:
- counting means for sequentially producing first, second and third output signals;
- reference means for generating a plurality of reference signals each indicative of the tolerance level of a respective one of the operating signals;
- switching means adapted to receive the reference pilot and phase pilot operating signals and connected to receive the corresponding reference signals and said first and second output signals for sampling the reference pilot operating signal and the corresponding reference signal upon receipt of said first output signal, and connected to receive the phase pilot operating signal and the corresponding reference signal upon receipt of said second output signal, for producing sample signals representative thereof;
- first comparison means connected to receive said sample signals for comparing the sampled reference pilot signal and the sampled phase pilot signal with respective corresponding ones of the sampled reference signals and for producing tolerance signals each indicative of a respective one of the reference pilot and phase pilot operating signals when beyond its tolerance level;
- and
- second comparison means adapted to receive the X and Y modulator carrier operating signals and connected to receive said third output signal and the corresponding reference signals for producing tolerance signals each indicative of a carrier operating signal when beyond its tolerance level.
Dependencies are inferred from the claim text.