Boots – shoes – and leggings
Patent
1976-02-03
1978-02-21
Ruggiero, Joseph F.
Boots, shoes, and leggings
324115, 325 38B, 332 11D, 340347NT, 364453, 364605, 364831, G01C 2116, G06F 1550, G01R 1508
Patent
active
040757013
ABSTRACT:
A method and circuit arrangement for changing the sensitivity of the measng range in a device employing delta modulation in a navigation system. The device uses an integrator for integrating a measured value from a sensor, a threshold detector following the integrator, a synchronizer responsive to the threshold detector and a pulse transmitter driven by the synchronizer. The pulse transmitter provides a reset pulse with appropriate release time to reset the integrator, the reset pulse being counted by a counter fed to a navigation computer. A switching arrangement at the input of the integrator operates to change the sensitivity or scale factor. Switching is controlled by logic circuitry which responds to the level of the measured value as well as the output of the integrator. The reset pulse release time is also employed as a switching criterion. Means for providing a dynamic measured value and for taking into account the anticipated customary deflections of the sensor are included as additional switching criteria. Means for correcting for zero point error which includes means for changing input sensitivities are also disclosed.
REFERENCES:
patent: 3470367 (1969-09-01), Frisby et al.
patent: 3617885 (1971-11-01), Wheable
patent: 3772683 (1973-11-01), Dorey
patent: 3774018 (1973-11-01), Spreitzhofer
patent: 3829659 (1974-08-01), Margolis
patent: 3873918 (1975-03-01), Talbert
Messerschmitt-Bolkow-Blohm Gesellschaft mit beschrankter Haftung
Ruggiero Joseph F.
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