System for changing a rotational speed signal
First Claim
1. A system for producing a signal representing a rotational movement of a wheel on a motor vehicle having an engine, said system comprising:
- a first means for generating a first signal representing the rotational movement and said first signal assuming at least two first values of current or voltage;
a second means capable of generating at least one second signal said second signal representing one or more of;
brake lining wear in at least one wheel brake of the vehicle, the direction of said rotational movement, the amplitude of a value associated with the first signal, other operating conditions of the vehicle wheel, other operating conditions of the vehicle brake, and other operating conditions of the vehicle engine; and
a third means capable of changing at least one of the first values of the first signal, wherein the occurrence of said change is dependent upon the generation of said second signal.
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Accused Products
Abstract
The invention is based on a system for changing a signal representing rotational motion in a motor vehicle with first means for generating a first signal representing the rotational motion and a second means for generating at least one second signal representing additional information (direction of rotation, air gap, and/or brake lining wear). In addition, a third means is provided, by means of which the first signal (rotational speed signal) can be changed as a function of the second signal (direction of rotation, air gap, and/or brake lining wear). The essence of the invention is that the first means is designed in such a way that the first signal (rotational speed signal) assumes at least two first current values and/or two first voltage values. In addition, the third means is designed in accordance with the invention in such a way that, to change the first signal (rotational speed signal), at least one of the first current values and/or voltage values can be changed at least for a certain period of time into at least one second current value and/or voltage value as a function of the second signal (direction or rotation, air gap and/or brake lining wear).
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Citations
23 Claims
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1. A system for producing a signal representing a rotational movement of a wheel on a motor vehicle having an engine, said system comprising:
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a first means for generating a first signal representing the rotational movement and said first signal assuming at least two first values of current or voltage;
a second means capable of generating at least one second signal said second signal representing one or more of;
brake lining wear in at least one wheel brake of the vehicle, the direction of said rotational movement, the amplitude of a value associated with the first signal, other operating conditions of the vehicle wheel, other operating conditions of the vehicle brake, and other operating conditions of the vehicle engine; and
a third means capable of changing at least one of the first values of the first signal, wherein the occurrence of said change is dependent upon the generation of said second signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
a signal representing the temperature of a wheel brake of the vehicle; and
a signal representing the temperature of a rotational speed sensor; and
a signal representing a supply voltage (VCC) of the rotational speed sensor.
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19. A system according to claim 11, wherein the system is part of a motor vehicle;
- wherein the first signal represents the rotational speed of the vehicle motor, said motor vehicle is a gasoline and/or diesel engine;
wherein the second means generates a signal representing the rotational direction of the vehicle'"'"'s engine; and
wherein the evaluation means is an engine control unit which generates ignition and/or injection signals and which suppresses at least individual ignition signals in cases where it has been recognized that the vehicle'"'"'s engine is rotating backwards.
- wherein the first signal represents the rotational speed of the vehicle motor, said motor vehicle is a gasoline and/or diesel engine;
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20. A system according to claim 7 wherein the switching means has a first switch and a second switch and the first switch is located near a brake lining and the second switch near the rotational speed sensor.
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21. A system according to claim 20 wherein said switches are transistors.
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22. A system according to claim 8 wherein said switches are transistors.
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23. A system for producing a signal representing a relative movement between a body of a vehicle and a wheel unit of said vehicle, said system comprising:
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a first means for generating a first signal representing the movement between the body of the vehicle and a wheel unit of the vehicle relative to one another;
said first signal assuming at least two first values of current or voltage;
a second means for generating at least one second signal representing additional information, said second signal containing information representing whether the vehicle body is moving toward or away from the wheel unit; and
a third means for changing at least one of the first values of the first signal, for a certain period of time, as a function of said second signal.
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Specification