Device for detecting liquid amount in a vessel
First Claim
1. A device for detecting an amount of liquid in a vessel, said device comprising:
- torsion structure means connected to said vessel for allowing torsion displacement by the weight of said vessel and the liquid in said vessel;
means for detecting a torsion displacement of said torsion structure means and generating signals representative of said torsion displacement; and
an electronic unit for receiving said signals from said detection means;
wherein said electronic unit comprises;
means for generating a pulse width signal corresponding to the amount of said liquid on the basis of said signals from said detection means;
means for detecting the pulse width by generating a signal indicating the number of pulses proportional to the pulse width of said generated pulse width signal;
means for generating timing pulses having a predetermined interval; and
average value calculation and display means for calculating average values at predetermined intervals from the values corresponding to the number of pulses of the signal from said pulse width detection means by using said generated timing pulses, and for displaying said calculated values as an indication of said amount of liquid.
1 Assignment
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Accused Products
Abstract
A device for detecting the amount of liquid in a vessel, such as a fuel tank of an automobile, using a torsion support member such as a torsion bar arranged between the vessel and the body of the automobile. The torsion displacement of the member corresponding to the amount of the liquid is detected in a detection circuit and processed in an electronic unit which includes a portion for generating a pulse width signal corresponding to the amount of the liquid on the basis of signals from the detection circuit, a portion for generating a signal having a pulse number proportional to the pulse width on the basis of the generated pulse width signal, and a portion for averaging at predetermined intervals the value corresponding to the pulse number of the signal from the pulse width detection portion using timing pulses generated at predetermined intervals and for displaying the average amount of the liquid digitally on a display portion.
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Citations
11 Claims
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1. A device for detecting an amount of liquid in a vessel, said device comprising:
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torsion structure means connected to said vessel for allowing torsion displacement by the weight of said vessel and the liquid in said vessel; means for detecting a torsion displacement of said torsion structure means and generating signals representative of said torsion displacement; and an electronic unit for receiving said signals from said detection means; wherein said electronic unit comprises; means for generating a pulse width signal corresponding to the amount of said liquid on the basis of said signals from said detection means; means for detecting the pulse width by generating a signal indicating the number of pulses proportional to the pulse width of said generated pulse width signal; means for generating timing pulses having a predetermined interval; and average value calculation and display means for calculating average values at predetermined intervals from the values corresponding to the number of pulses of the signal from said pulse width detection means by using said generated timing pulses, and for displaying said calculated values as an indication of said amount of liquid. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification