Tire pressure monitoring system
First Claim
1. A method of monitoring tire pressure of a tire of a vehicle, in which temporally successive tire pressure measured values are sensed by a pressure detector, and at least part of the tire pressure measured values is transmitted from a transmitter to a receiver with a variable frequency of occurrence, wherein the frequency of occurrence is derived from the sensed tire pressure measured values, the method comprising the steps of:
- decrementing or incrementing a count of counter beginning with a starting value;
comparing the count with a tire pressure change dependent parameter derived from the sensed tire pressure measured values; and
triggering a transmission when the count reaches the tire pressure change dependent parameter.
2 Assignments
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Accused Products
Abstract
In the system for monitoring tire pressure in a tire of a vehicle, temporally successive tire pressure measured values are sensed by a transmitting unit, and at least part of the tire pressure measured values is transmitted to a receiving unit with a variable frequency of occurrence, wherein the frequency of occurrence is derived from the sensed tire pressure measured values by means of a control unit.
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Citations
45 Claims
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1. A method of monitoring tire pressure of a tire of a vehicle, in which temporally successive tire pressure measured values are sensed by a pressure detector, and at least part of the tire pressure measured values is transmitted from a transmitter to a receiver with a variable frequency of occurrence, wherein the frequency of occurrence is derived from the sensed tire pressure measured values, the method comprising the steps of:
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decrementing or incrementing a count of counter beginning with a starting value;
comparing the count with a tire pressure change dependent parameter derived from the sensed tire pressure measured values; and
triggering a transmission when the count reaches the tire pressure change dependent parameter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A method of monitoring tire pressure in a tire of a vehicle, wherein tire pressure measured values are sensed by a pressure detector at successive measuring time instants, and the tire pressure measured values are transmitted from a transmitter to a receiver at successive transmission time instants, wherein the distance between successive measuring time instants and/or the distance between successive transmission time instants is adjustable and is derived from the sensed tire pressure measured values, comprising the steps of:
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sensing a plurality of tire pressure measured values;
ascertaining an instantaneous pressure dynamics state in the tire occurring as a result of the instantaneous driving situation of the vehicle from the plurality of tire pressure measured values, comprising the following substeps;
evaluating a plurality of successive tire pressure measured values to obtain a tire pressure dependent driving situation parameter;
comparing the tire pressure dependent driving situation parameter with a comparison parameter; and
ascertaining the instantaneous pressure dynamics state from the comparison; and
adjusting the measuring time instants or the transmission time instants corresponding to the ascertained instantaneous pressure dynamics state. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41)
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42. A computer program with a program code, stored on a computer readable medium and executable by a computer system, for performing a method of monitoring the tire pressure in a vehicle tire, in which temporally successive tire pressure measured values are sensed by a pressure detector, and at least part of the tire pressure measured values is transmitted from a transmitter to a receiver with a variable frequency of occurrence, wherein the frequency of occurrence is derived from the sensed tire pressure measured values, the computer program comprising:
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instructions for decrementing or incrementing a count of counter beginning with a starting value;
instructions for comparing the count with a tire pressure change dependent parameter derived from the sensed tire pressure measured values; and
instructions for triggering a transmission when the count reaches the tire pressure change dependent parameter.
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43. A computer program with a program code, stored on a computer readable medium and executable by a computer system, for performing a method of monitoring tire pressure in a tire of a vehicle, wherein tire pressure measured values are sensed by a pressure detector at successive measuring time instants, and the tire pressure measured values are transmitted from a transmitter to a receiver at successive transmission time instants, wherein the distance between successive measuring time instants and/or the distance between successive transmission time instants is adjustable and is derived from the sensed tire pressure measured values, the computer program comprising:
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instructions for sensing a plurality of tire pressure measured values;
instructions for ascertaining an instantaneous pressure dynamics state in the tire occurring as a result of the instantaneous driving situation of the vehicle from the plurality of tire pressure measured values, comprising;
instructions for evaluating a plurality of successive tire pressure measured values to obtain a tire pressure dependent driving situation parameter;
instructions for comparing the tire pressure dependent driving situation parameter with a comparison parameter; and
instructions for ascertaining the instantaneous pressure dynamics state from the comparison; and
instructions for adjusting the measuring time instants or the transmission time instants corresponding to the ascertained instantaneous pressure dynamics state.
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44. An apparatus for monitoring tire pressure in a tire of a vehicle, comprising:
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a pressure detector for detecting temporally successive tire pressure measured values, a transmitter for transmitting at least part of the tire pressure measured values to a receiver, a controller for controlling the frequency of occurrence of the transmission of the tire pressure measured values by the transmitter depending on the sensed tire pressure measured values, wherein the controller further comprises;
a counter whose count is decrementable or incrementable beginning with a starting value;
a comparator for comparing the count with a tire pressure change dependent parameter derived from the sensed tire pressure measured values; and
a trigger for triggering a transmission by the transmitter when the count reaches the tire pressure change dependent parameter.
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45. An apparatus for monitoring tire pressure in a tire of a vehicle, wherein tire pressure measured values are detectable by a pressure detector at successive measuring time instants, and the tire pressure measured values are transmissible from a transmitter to a receiver at successive transmission time instants, wherein the distance between successive measuring time instants and/or the distance between successive transmission time instants is adjustable and derivable from the sensed tire pressure measured values, comprising:
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a tire pressure detector for detecting a plurality of tire pressure measured values;
a transmitter for transmitting the tire pressure measured values to a receiver;
a first controller for ascertaining an instantaneous pressure dynamics state in the tire occurring as a result of the instantaneous driving situation from the plurality of tire pressure measured values, further comprising;
an evaluator for evaluating a plurality of successive tire pressure measured values to obtain a tire pressure dependent driving situation parameter;
a comparator for comparing the tire pressure dependent driving situation parameter with a comparison parameter; and
a second controller for ascertaining the instantaneous pressure dynamics state from the comparison, an adjuster for adjusting the measuring time instants or the transmitting time instants according to the ascertained instantaneous pressure dynamics state.
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Specification