Sensor and method for determining operating states associated with one or more tires. The operating state of the tire can be determined based on one or more measures environmental conditions of the tire(s). For example, a controller can be configured to determine a change in one or more environmental conditions, including determining, for example, a rate-of-change value, a variance value, a standard deviation, or the like. The rate-of-change, variance, and/or standard deviation values can be compared to one or more threshold values to determine the operating state(s) associated with the tire(s). The environmental condition can include, for example, acceleration of the tire, pressure of the tire, and/or temperature of the tire. The operating state can be, for example, a filling state indicative of the tire being inflating, and/or a drive state indicative of the tire rotating about its axle.

A modular tire pressure leak detection system includes a tire that supports a vehicle and a sensor unit mounted on the tire. The sensor unit detects real-time tire parameters inside the tire and transmits the parameters to a processor. A plurality of modules are in electronic communication with the processor. The plurality of modules include a pre-processing module that receives the parameters and applies a set of operations to generate pressure time series data, a leak detection module that receives the pressure time series data and determines a leak rate of the tire, and a post-processing module that receives the leak rate of the tire and analyzes the leak rate of the tire with determinations from a plurality of conditions. A leak alert is issued by the post-processing module based upon the analysis of the leak rate of the tire and the determinations from the plurality of conditions.

A self-adaptive method for assisting in the inflation of tires of a vehicle that is stationary in an immobilization mode, the method including continuously measuring at least the pressure of each tire by way of a wheel unit, transmitting signals on the state of the tires between each wheel unit and a central unit, these signals being transmitted by each wheel unit through frequency-shift keying between two first predetermined frequencies defining a first frequency band. In a immobilization mode, each wheel unit is reprogrammed such that it transmits, to the central unit, first and second frequency-shift keyed signals respectively with first and second frequency bands, the second band being wider than the first band.

A self-adaptive method for assisting in the inflation of tires of a vehicle that is stationary in an immobilization mode, the method including continuously measuring at least the pressure of each tire by way of a wheel unit, transmitting signals on the state of the tires between each wheel unit and a central unit, these signals being transmitted by each wheel unit through frequency-shift keying between two first predetermined frequencies defining a first frequency band. In a immobilization mode, each wheel unit is reprogrammed such that it transmits, to the central unit, first and second frequency-shift keyed signals respectively with first and second frequency bands, the second band being wider than the first band.

Sensor and method for determining operating states associated with one or more tires. The operating state of the tire can be determined based on one or more measures environmental conditions of the tire(s). For example, a controller can be configured to determine a change in one or more environmental conditions, including determining, for example, a rate-of-change value, a variance value, a standard deviation, or the like. The rate-of-change, variance, and/or standard deviation values can be compared to one or more threshold values to determine the operating state(s) associated with the tire(s). The environmental condition can include, for example, acceleration of the tire, pressure of the tire, and/or temperature of the tire. The operating state can be, for example, a filling state indicative of the tire being inflating, and/or a drive state indicative of the tire rotating about its axle.

A system for monitoring tire pressure of at least one vehicle tire of a utility vehicle includes a pressure sensor for detecting an internal tire pressure of the at least one vehicle tire and an electrically controllable tire inflation system for varying the internal tire pressure. The system also includes a monitoring unit disposed in communication with the pressure sensor and the tire inflation system. The monitoring unit identifies a defect-induced loss of pressure in the at least one vehicle tire based on the detected internal tire pressure, determines a temporal progression of the detected defect-induced loss of pressure, calculates a volume flow necessary for continuous compensation of the pressure loss based on the temporal progression, and controls the volume flow into the at least one vehicle tire via the tire inflation system.

A vehicle tire monitoring system has an electronic controller in electronic communication with a rotation sensor, an input device and a signaling device. The electronic controller is configured to do at least the following. In response to the input device receiving a request to orient a valve stem of a tire with low air pressure to a predetermined orientation, the electronic controller determines that the valve stem is not currently in the predetermined orientation. The electronic controller operates the signaling device to provide a first signal to a vehicle passenger and/or the vehicle operator. Further, in response to receiving the request to orient the valve stem to the predetermined orientation and determining that the valve stem is currently in the predetermined orientation, the electronic controller operates the signaling device to provide a second signal indicating the need to rotate the tire to bring the valve stem to the predetermined orientation.

A tire condition telematics system. The system includes a vehicle having an onboard computer and one or more wheel assemblies with one or more tires with a tire tread. A prediction as to when said tire tread will fall below a minimum tread depth in performed. The prediction is based on an amount of distance said wheel assemblies experience said wheel slip condition, a distance said wheel assemblies drive over said one or more road materials, a distance said wheel assemblies drive in rain and snow, a distance one or more loads are on said vehicle.

A tire pressure monitoring system monitors the pressure in at least one tire supporting a vehicle. The system includes at least one sensor mounted on the tire for measuring a pressure and a temperature of the tire. Transmission means transmit the measured pressure data and temperature data to a processor, and a tire pressure model is executed on the processor. The tire pressure model includes a driving event extractor to extract cold pressure data from the measured pressure data, and a temperature compensator to generate a compensated cold tire pressure from the cold pressure data. A noise filter filters sensor noise and generates a filtered cold tire pressure from the compensated cold tire pressure. A detection module receives the filtered cold tire pressure and determines an air pressure leak rate of the tire, and a leak notification corresponding to the air pressure leak rate is generated.

A tire pressure monitoring system (TPMS) and TPMS sensor module are provide. The TPMS sensor module includes a pressure sensor configured to measure an internal air pressure of a tire and generate tire pressure information, a microcontroller unit electrically connected to the pressure sensor, and a transceiver electrically connected to the microcontroller unit, the transceiver configured to transmit a message including the pressure information. Where, on a condition that the transceiver receives an acknowledgement in response to the transmitted message, the microcontroller unit is configured to set the transceiver into a standby mode, and, where, on a condition that the transceiver does not receive any acknowledgement in response to the transmitted message within a waiting period, the microcontroller unit is configured to instruct the transceiver to retransmit the message, and the transceiver is configured to retransmit the message after the waiting period.