Measuring and testing – Vehicle chassis – Steering
Patent
1974-11-27
1976-06-22
Myracle, Jerry W.
Measuring and testing
Vehicle chassis
Steering
340 52F, 340413, G01M 1700
Patent
active
039643026
ABSTRACT:
Electrical signals representing analog values of variables to be measured are sampled and multiplexed onto a common conductor. When the analog values are generated by transducers having a logarithmic characteristic, the signals are linearized by a log amplifier prior to being multiplexed. The ranges of the analog signals are made similar to facilitate use of a common display. A single analog-to-digital converter generates digital outputs representing the amplitudes of the respective analog samples and the digital outputs control display logic for operating the common display. A sequence timer controls operation of the multiplexer, analog-to-digital converter, display logic, and the display itself. Facility for manual override to display selectively any of the variables is provided, as well as an alarm indicator for generating an audible or visual alarm signal in the event any variable exceeds (or drops below) a predetermined reference level. An electroluminescent seven-segment display and quantised analog displays are described. The system is described with particular reference to an automotive display system for monitoring, e.g. fuel level, oil pressure, coolant temperature, and battery voltage.
REFERENCES:
patent: 2981107 (1961-04-01), Anderson
patent: 3630076 (1971-12-01), Standt
patent: 3651454 (1972-03-01), Venema et al.
patent: 3738174 (1973-06-01), Waldron
patent: 3764983 (1973-10-01), Stok
patent: 3777121 (1973-12-01), Jamieson
patent: 3866166 (1975-02-01), Kerscher et al.
patent: 3906437 (1975-09-01), Brandwein et al.
DEN Brinker Carl Siegmund
Gordon James Sneddon
Comfort James T.
Donaldson Richard L.
Levine Hal
Myracle Jerry W.
Texas Instruments Incorporated
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