A tire wear state estimation system includes at least one sensor disposed on a vehicle and a CAN bus system. The sensor measures selected parameters associated with the vehicle and communicates data for the selected parameters through the CAN bus system, including a first set of data, a second set of data and a third set of data. A rolling radius estimator receives the first set of data and estimates a rolling radius for the tire. An acceleration slip estimator receives the second set of data and the estimated rolling radius to estimate the slip of the tire during acceleration. A braking slip estimator receives the third set of data and the estimated rolling radius to estimate the slip of the tire during braking. A tire slip analyzer correlates the acceleration slip estimation and the braking slip estimation and generates an estimated wear state of the tire.

Systems and methods for detecting and removing erroneous tire pressure values are provided. The method involves operating at least one processor to: receive tire pressure data comprising a time series of tire pressure values; simplify the tire pressure data by removing at least some of the tire pressure values that satisfy a predetermined interpolation error threshold; detect, using a trained machine learning classifier, at least one erroneous tire pressure value in the tire pressure data, each erroneous tire pressure value being detected based on the erroneous tire pressure value and a plurality of lagging tire pressure values consecutively trailing the erroneous tire pressure value; clean the tire pressure data by removing the at least one erroneous tire pressure value; and transmit the tire pressure data to a fleet management system, whereby the at least one erroneous tire pressure value is not transmitted to the fleet management system.

A tire pressure monitor system allows for customized configurations and a variety of intelligent alerts to increase usability and reliability over existing tire pressure monitor systems. A central receiver determines the alerts, rather than individual receivers, so that the tires can be monitored as a system rather than as individual tires. For instance, a Cross-Axle Alert is triggered when the pressure in a tire on one side of an axle is significantly greater than the pressure in a tire on an opposite side of the axle. Additional features include the use of Dynamic Reference Pressures, as opposed to static reference pressures, so that the alert parameters can be adjusted according to the current driving conditions. A robust user interface provides a user with a variety of views and screens and enables an administrator to adjust alert parameters while preventing a driver from adjusting the same parameters.

A method of determining tire pressure includes providing a control unit having a first pressure transducer. The control unit is in fluid communication with a fluid reservoir via an air supply circuit. A second pressure transducer is disposed at least partially within the fluid reservoir. The method also includes measuring a pressure of air in the air supply circuit utilizing the first pressure transducer and measuring a pressure of air in the reservoir utilizing the second pressure transducer. The method additionally includes determining a difference in the measurements of the first pressure transducer and the second pressure transducer and calibrating the second pressure transducer pressure measurement to agree with the first pressure transducer pressure measurement where the pressure difference is less than a predetermined value. The method further includes measuring a pressure in one or more tires.

A radio frequency identification (RFID) tag includes an antenna, an analog front end, a processing circuit, and memory. The analog front end includes a power circuit, a tuning circuit, a transmitter, and a receiver. The power circuit is operably coupled to convert a radio frequency (RF) signal into a power supply voltage. The tuning circuit, when enabled, adjusts an RF characteristic of the analog front end to tune power harvesting from the RF signal. The transmitter is operably coupled to transmit a response signal to the RFID reader via the antenna. The receiver is operably coupled to receive a command signal from the RFID reader, wherein the command signal is contained within a portion of the RF signal. The processing circuit is operable to interpret the command signal and generate the response signal.

A tire-state detection device according to the present invention includes: an electronic component including a detection unit that detects a pressure of a tire; and a case that houses the electronic component. The case includes: a case main body that houses the electronic component and that has an open surface formed thereon; and a lid member that covers the open surface. The detection unit includes: a pressure sensor section having a diaphragm-type element; a sensor control section that controls the pressure sensor section; and a dome-shaped shield cover that covers the pressure sensor section and the sensor control section. An inside of the case main body having the open surface covered with the lid member is filled with a sealant, and the diaphragm-type element is made of a ceramic.

The application discloses a tire pressure sensor communication method, device, electronic equipment and storage medium. The method comprises the follow steps: acquiring a first tire state when a tire pressure sensor is awakened; collecting first tire pressure data corresponding to the first tire state, and determining whether the first tire state meets a preset state switching condition according to the first tire pressure data; controlling the first tire state to switch to a corresponding second tire state if the first tire state meets the state switching condition; acquiring a preset tire pressure data transmission control parameter corresponding to the second tire state; collecting second tire pressure data corresponding to the second tire state according to the tire pressure data transmission control parameter, and sending the second tire pressure data to a vehicle-mounted tire pressure monitoring module.

A dynamic tire pressure sensor system for a bike comprises a dynamic tire pressure sensor device and a user receiving carrier wherein the dynamic tire pressure sensor device comprises at least a tire pressure sensor module, a processing module and a transmission module: the tire pressure sensor module transmits tire pressure change data to the processing module; the processing module either performs data operation independently or transmits tire pressure change data to the user receiving carrier from the transmission module for data operation in order to analyze pedaling cadences and pedaling forces during cycling and provide/display real-time sports information on the user receiving carrier.

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.

A module is operable to monitor at least a pressure within a tire of a wheel, the module being operatively mounted to said wheel, the module including (a) a pressure sensor for measuring the pressure (P) and generating a corresponding pressure signal; and b1) an associated data memory including a data field containing data relevant to the functional status of the tire.