Boots – shoes – and leggings
Patent
1976-05-20
1977-11-29
Ruggiero, Joseph F.
Boots, shoes, and leggings
123117D, 123148E, F02P 504, G06F 1520, G06G 770
Patent
active
040607143
ABSTRACT:
In one embodiment, a circuit parameter of a sensor varies in accordance with an input useful in controlling an event associated with operation of an engine, for example, spark timing. The sensor is connected in an input sensing circuit characterized by a first order differential equation exhibiting an exponential transient whose time constant is representative of the circuit parameter, and hence of the input being sensed. A step function input is applied to the sensing circuit to cause the occurrence of an exponential transient, and concurrently a digital counter circuit begins counting clock pulses. The transient is compared against a predetermined reference, and when a predetermined relationship between the reference and the transient is attained, the counter circuit ceases counting pulses. The accumulated count is in the form of a binary word which may be used directly by a digital microprocessor in calculations for controlling the event.
REFERENCES:
patent: 3846760 (1974-11-01), Ironside
patent: 3898962 (1975-08-01), Honig et al.
patent: 3904856 (1975-09-01), Monpetit
patent: 3906207 (1975-09-01), Rivere et al.
patent: 3969614 (1976-07-01), Moyer et al.
Lappington John P.
Shafer Leroy
Chrysler Corporation
Ruggiero Joseph F.
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