Apparatus for controlling an odometer and speedometer system of a vehicle
First Claim
1. Apparatus for controlling an odometer and speedometer of a vehicle cooperating with a rotatable element of said vehicle indicative of movement of said vehicle, comprising:
- transducer means for generating initial pulses in response to rotation of said rotatable element;
multiplying means connected to said transducer means for producing a train of pulses upon receipt of each initial pulse, said multiplying means including means for selecting a multiplying factor corresponding to an existing condition of the vehicle affecting the distance covered by the vehicle per revolution of said element;
divider means receiving the train of pulses for dividing the train of pulses by a fixed number to produce a subsequent pulse train having a frequency suitable for driving said odometer;
means for connecting said odometer to receive said subsequent pulse train;
frequency conversion means for converting said train of pulses into a signal suitable for driving the speedometer; and
means for connecting said speedometer to said frequency conversion means.
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Accused Products
Abstract
Apparatus for controlling an odometer and speedometer system of a vehicle, adjustable for vehicle parameter variations, such as tire size and axle ratio, including a transducer for generating a plurality of initial pulses in response to vehicle movement which pulses control both the vehicle odometer and speedometer. The initial pulses are multiplied by a multiplying factor to produce a train of pulses for each initial pulse. The multiplying factor is in binary form and is selected either according to the position of an array of switches or according to a number retained in a programmable downcounter. The train of pulses is divided by a fixed number to create a driving signal for the odometer and is converted by a frequency converter to drive the speedometer.
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Citations
15 Claims
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1. Apparatus for controlling an odometer and speedometer of a vehicle cooperating with a rotatable element of said vehicle indicative of movement of said vehicle, comprising:
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transducer means for generating initial pulses in response to rotation of said rotatable element; multiplying means connected to said transducer means for producing a train of pulses upon receipt of each initial pulse, said multiplying means including means for selecting a multiplying factor corresponding to an existing condition of the vehicle affecting the distance covered by the vehicle per revolution of said element; divider means receiving the train of pulses for dividing the train of pulses by a fixed number to produce a subsequent pulse train having a frequency suitable for driving said odometer; means for connecting said odometer to receive said subsequent pulse train; frequency conversion means for converting said train of pulses into a signal suitable for driving the speedometer; and means for connecting said speedometer to said frequency conversion means. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. Apparatus for controlling an odometer and speedometer of a vehicle cooperating with a rotatable element of said vehicle indicative of movement of said vehicle, comprising:
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transducer means for generating initial pulses in response to rotation of said rotatable element; multiplying means for producing a train of pulses upon receipt of each initial pulse, said multiplying means including means for selecting a multiplying factor corresponding to an existing condition of the vehicle affecting the distance covered by the vehicle per rotation of said element; said selecting means including means, responsive to the number of rotations of said rotatable element caused when said vehicle is driven over a measured distance, for programming said multiplying means by providing said selecting means with signals representing a number equivalent to said multiplying factor; divider means receiving said train of pulses and dividing said train of pulses by a fixed number to produce a subsequent pulse train having a frequency suitable for driving said odometer; means for connecting said odometer to receive said subsequent pulse train; frequency conversion means for converting said train of pulses into a signal suitable for driving said speedometer; and means for connecting said speedometer to said frequency conversion means. - View Dependent Claims (9, 10, 13, 14, 15)
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11. The apparatus according to clain 10 wherein said selecting means includes a second counter responsive to said transducer means;
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a comparator responsive to said second counter and communicating with said first named counter and flip-flop; said second counter adapted to signal said flip-flop to reset said first-named counter and to turn off said oscillator. - View Dependent Claims (12)
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Specification