A tire pressure monitoring system includes a first tire mounted on a first end of an axle and a second tire mounted on a second end of the axle. A first sensor is mounted on the first tire for measuring a pressure, and a second sensor is mounted on the second tire for measuring a pressure. The system includes means for transmitting measured pressure data from the first sensor and the second sensor to a processor. A tire pressure model is executed on the processor, and includes an aggregator that accumulates the measured pressure data from the first sensor and the second sensor. A noise filter filters sensor noise and generates filtered pressure data from the measured tire pressure data. A detection module receives the filtered pressure data and determines when a leak occurs in one of the tires. A leak notification is generated when the leak occurs.

A first tire pressure sensor module is configured to provide information related to a pressure of a tire of a vehicle and comprises a pressure sensor configured to determine the information related to the pressure of the tire. The pressure module further includes a controller configured to selectively operate the tire pressure sensor module in an active state and in an inactive state, wherein an energy consumption of the tire pressure sensor module is lower in the inactive state than in the active state. The controller is further configured to control an output of the information related to the pressure of the tire in the active state, and operate the tire pressure sensor module in the inactive state based on determining that information related to a velocity of the tire indicates a velocity above a threshold.

The disclosed technology generally relates to tires, and more particularly to a method of and a smart tire system for evaluating a state of a tire, and providing an alarm, and to a smart tire configured for the method and the system. In one aspect, a method includes determining whether an abnormality or a problem exists in a state of a tire, by processing a tire state value from a TPMS sensor. Processing the tire state can be carried out by a sensor processor and/or a sensor information processor. The method additionally includes providing an alarm to a user, e.g., a driver. The method additionally includes verifying the determination of whether there is an abnormality or a problem. Thus, the disclosed method includes determining the state of a tire and providing an alarm, where the alarm has high reliability because it is generated based on examination of various parameters of the tire state, including, e.g., pressure, temperature and/or acceleration. The disclosed technology additionally relates to a system and a smart tire configured to implement the method. The method, the system and the tire according to embodiments may be improvements over existing methods, systems and tires.

A pressure sensing circuit for use with a wireless sensor that includes an antenna and a pressure sensing element. The antenna includes a first pole and a second pole and is operable to transceive radio frequency signals between the wireless sensor and a wireless data collecting device. The pressure sensing element includes an electrical circuit and a diaphragm. When pressure is applied to the diaphragm, a characteristic of the electrical circuit changes. The changing of the characteristic of the electrical circuit causes one or more RF characteristics of the wireless sensor to change, which is interpretable to determine a pressure being applied to the pressure sensing element.

A pressure of a spare tire of a vehicle is determined. Whether the spare tire is installed is determined based at least in part on the pressure. A vehicle subsystem is actuated based at least in part on whether the spare tire is installed.

A tire air pressure detection device has transmitters each detecting a running state of a vehicle on the basis of a detection signal of an acceleration sensor and transmitting a frame when it is determined that the vehicle is running. Because acceleration varies independently of a tire rotation speed, a frame can be transmitted even before a vehicle speed reaches or exceeds, for example, 30 km/h. Consequently, data on a tire air pressure can be transmitted in a short time period from a running start of the vehicle and hence a decrease in tire air pressure can be detected in a short time period from the running start of the vehicle.

A management computer transmits to a vehicle a request of vehicle ID to identify the vehicle, when a tire ID of the vehicle is not registered in a registration portion. Upon receiving the request, a transmission pattern adjustment section of an ECU of tire pressure monitoring system of the vehicle controls a sensor unit of at least one tire to transmit electric waves in transmission pattern expressing the vehicle ID. The management computer permits the vehicle to use a facility when a vehicle ID specified from the received transmission pattern on electric waves is registered in a registration portion.

A first tire pressure sensor module is configured to provide information related to a pressure of a tire of a vehicle and comprises a pressure sensor configured to determine the information related to the pressure of the tire. The pressure module further includes a controller configured to selectively operate the tire pressure sensor module in an active state and in an inactive state, wherein an energy consumption of the tire pressure sensor module is lower in the inactive state than in the active state. The controller is further configured to control an output of the information related to the pressure of the tire in the active state, and operate the tire pressure sensor module in the inactive state based on determining that information related to a velocity of the tire indicates a velocity above a threshold.

A sensor module, in some embodiments, comprises a sensor configured to capture data and a sensor interface coupled to the sensor and configured to process the data captured by the sensor to form processed data. The sensor module may also comprise a current consumption configuration component and a transistor coupled to the current consumption configuration component and configured to control the current consumption configuration component to output the processed data.

Disclosed is a method for driving a processor of an electronic box mounted on a vehicle wheel, transmitting operating parameters of the wheel for implementation of a specific application by a central unit. This includes defining, for each specific application, the physical quantities liable to affect the relevance of the operating parameters, and ranges of measured values corresponding to conditions for obtaining relevant values of the operating parameters. Also included is a procedure for acquiring and transmitting the operating parameters consisting of a succession of transmission windows, during each of which the physical quantities selected for the application are measured, it is checked whether the conditions for obtaining relevant values of the operating parameters are met. If so, at least one value of each parameter is acquired and transmitted, while assigning to this value a datum attesting to the relevance of the latter, and then the transmission window is closed.