A method of determining a tire performance characteristic of a tire including querying, using a processing system, a memory as to a presence of a first set of values indicative of a tire parameter of a tire in the memory, and determining, using the processing system, that the first set of values is insufficient to determine the tire performance characteristic of the tire, The method includes performing steps, using the processing system, comprising one or more of providing an indication that a second set of values indicative of the tire parameter is required to determine the tire performance characteristic of the tire, and retrieving, from the memory, a performance coefficient of the tire corresponding to performance of the tire associated with the first set of values, and determining, based on the performance coefficient, the tire performance characteristic of the tire.

A tire pressure monitoring unit is for mounting on a vehicle wheel, having a sensor for measuring the tire pressure, a transmitter and a receiver for wireless data transmission, a memory for storing tire data, and a controller connected to the sensor, the transmitter, the receiver and the memory. The controller writes this tire data into the memory on receipt of tire data received via the receiver and assigns a value to a variable, the value marking this tire data as valid. It is provided that a necessary condition for the variable to be assigned a value which marks the tire data as invalid is that the controller detects a pressure increase that exceeds a predetermined threshold value. In addition, a corresponding method for managing tire data in a data memory of a tire pressure monitoring unit is described.

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.

Provided is a tire assembly includes a tire, a power generating body disposed inside the tire, and an electronic device that receives supply of power that is output from the power generating body. The power generating body includes a first insulating film, a second insulating film, a first electrode, and a second electrode. The first insulating film has a first surface. The second insulating film has a second surface. The first and second electrodes have conductivity. The power generating body is configured such that a true area of contact between the first surface and the second surface changes according to deformation of the tire.

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.

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.

Embodiments included herein are directed towards an automatic tire inflation monitoring system and method. The method may include confirming, using a battery powered electronic sensor, that there is no active tire re-inflation in progress. The method may further include monitoring, using the battery powered electronic sensor, the status of all tire pressures over a period of time and determining, using the battery powered electronic sensor, whether a rate of tire pressure reduction exceeds a first value. The method may include reporting, using the battery powered electronic sensor, a fault if the rate exceeds the first value.

A method of inflating a tire of a vehicle includes connecting the vehicle to an external air pump, using a connection, to provide communication of information between the vehicle and the external air pump. The method also includes transmitting information from the vehicle to the external air pump over the connection and controlling the external air pump based upon the communicated information to provide air to a vehicle tire, connected to the air pump, until the communicated information indicates that the tire has reached a desired pressure level, at which point the air pump ceases provision of air to the vehicle tire.

A tire pressure monitoring system includes tire pressure sensors installed within vehicle tires, a receiver, an alerting device, an electronic input/output device and an electronic controller. The receiver receives tire pressure signals from the tire pressure sensors, The electronic input/output device provides manual input of instruction and data. The electronic controller is configured to monitor tire pressure and in response to tire pressure in each of vehicle tires achieving a change from a first preset tire pressure to a second preset tire pressure the alerting device is operated to alert a person changing the tire pressure that the change has been achieved. The first preset tire pressure corresponds to paved road driving conditions and the second preset tire pressure corresponds to off-road driving conditions.

A tire pressure monitoring system interface comprising: a receiver configured to receive tire pressure signals from each of a plurality of tire pressure sensors of a corresponding plurality of vehicle wheels; an alerting device; an electronic input/output device configured to display at least one menu with data selections of tire pressure related data and receive manually inputted instructions; and an electronic controller having electronic memory and being electronically connected to the receiver, the alerting device and the electronic input/output device, the electronic controller being configured to: operate the electronic memory to access data that defines a first tire pressure and a second tire pressure for each of the plurality of wheels, the first tire pressure being for on-road driving conditions and the second tire pressure being for off-road driving conditions, display the at least one menu via the electronic input/output device, receive at least one of data input, data selection and operation instructions, the instructions including requesting off-road driving conditions; monitor tire pressure in each of the plurality of vehicle wheels; determining wheel by wheel whether or not the change in tire pressure in each of the plurality of wheels has been manually achieved by a person manually changing the tire pressure outside of the vehicle; and operating the alerting device to alert the person manually changing the tire pressure that the change in tire pressure has been achieved for each wheel, wheel by wheel.