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US 4,231,257 AGranted
Slope sensor for a vehicle
AssigneeNippon Soken, Inc.
InventorsYasuhisa Yoshino, Akira Kuno, Yoshio Shinoda
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Abstract
First and second sample-hold circuits sample and hold the atmospheric pressure alternately every time when a vehicle travels a predetermined distance. A signal representing a difference between the holding values of the first and second sample-hold circuits, that is, a signal representing a slope of the road on which the vehicle is travelling is displayed through a latch circuit.
Claims2
A slope sensor for a vehicle comprising:
- travel distance sensor means for generating a timing signal each time a vehicle travels a predetermined distance;
- atmospheric pressure sensing means for generating an electric signal corresponding to an atmospheric pressure;
- first and second sample-hold means, connected to said travel distance sensor means and said atmospheric pressure sensor means, for alternately sample-holding said electric signal corresponding to an atmospheric pressure in response to said timing signal;
- and
- comparator means, connected to said first and second sample-hold means and said travel distance sensor means, for detecting a difference value of said electric signal held by said both sample-hold means.
2 more elements
Dependencies are inferred from the claim text.