Process for determination of the stored quantity of operating fluids for automotive vehicles, and circuit for conducting the process
First Claim
1. A process for the determination of the stored quantity of operating fluids for automotive vehicles, wherein a measuring signal of a quantity of operating fluids is indicated, characterized instoring the measuring signal,transmitting said stored signal for indication,interrupting the storing of the measuring signal upon an acceleration-dependent change in the liquid level,determining the measuring signal in temporally or distance-dependent, identical intervals,comparing a determined measuring signal with a preceding determined measuring signal andstoring a standardized measuring signal instead of the measuring signal if the measuring signal lies above an upper limit value or below a lower limit value.
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Accused Products
Abstract
A sensor measures vehicle operating fluid volume, generating a signal which is transmitted to a data processing system. The data processing system actuates an indicator to show a volume indication corrected for vehicle acceleration. Correction may be effected in accordance with vehicle operating parameters.
19 Citations
24 Claims
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1. A process for the determination of the stored quantity of operating fluids for automotive vehicles, wherein a measuring signal of a quantity of operating fluids is indicated, characterized in
storing the measuring signal, transmitting said stored signal for indication, interrupting the storing of the measuring signal upon an acceleration-dependent change in the liquid level, determining the measuring signal in temporally or distance-dependent, identical intervals, comparing a determined measuring signal with a preceding determined measuring signal and storing a standardized measuring signal instead of the measuring signal if the measuring signal lies above an upper limit value or below a lower limit value.
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7. Apparatus for the determination of a stored quantity of operating fluids comprising
a measuring means, an analog-to-digital converter connected to the measuring means, a storage means to receive the output of the converter, a first comparator means to receive an output from said converter and said storage unit a subtraction means to receive an output from said converter and said storage unit, arithmetic means to determine a standard consumption, and a second comparator means to receive the output of the subtractor and the arithmetic means for producing an output, a switch, means for controlling said switch in response to output from said comparators.
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12. In a method for indicating a stored quantity of operating fluid for a vehicle having a fuel container, the steps of
sequentially sensing the level of fluid in said container to produce first signals representative of fluid level, storing second signals representing said fluid level in response to said first signals, displaying indications of quantity of operating fluid dependent upon said second signals, determining the difference between at least two of said second signals, and controlling the displaying of indications of quantity of operating fluid in response to said determining step.
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18. In apparatus for indicating a stored quantity of operating fluid for a vehicle having a fuel container,
means for sequentially sensing the level of fluid in said container to produce first signals representative of fluid level, means for storing second signals representing said fluid level in response to said first signals, means for displaying indications of quantity of operating fluid dependent upon said second signals, means for determining the difference between at least two of said second signals, and means for controlling the displaying of indications of quantity of operating fluid in response to said means for determining the difference.
Specification