An embodiment apparatus for determining a tire position includes a receiver configured to receive a signal from a tire pressure sensor, a processor configured to determine the tire position based on a tire internal temperature variation of a tire and a strength of the signal received from the tire pressure sensor, and a memory configured to store data and an algorithm executable by the processor.

A soil measure, such as a soil cone index, and a vehicle index indicating the amount of force the vehicle exerts on the ground as it travels over the ground, are obtained and compared to identify a soil damage score. The soil damage score can be mapped over a field and an agricultural vehicle can be controlled based upon the soil damage score.

A tire and wheel assembly includes a wheel having a portal and a tire mounted on the wheel, thereby forming a cavity. The assembly further includes a deflection sensor mounted on the wheel over the portal, at a location outside the cavity such that no portion of the deflection sensor is inside the cavity.

A method for pairing a measurement module with a wheel of a vehicle including, for each angular orientation signal associated with a specific wheel received by a computer, the steps of transmitting, by the computer, a measurement signal or a request to transmit a measurement signal to each module, measuring, by the computer or each module, a value of at least one parameter differentiating the signal, performing repetitions of the transmissions of measurement signals for each angular orientation signal received by the computer and storing values of the parameter, pairing a specific wheel with a measurement module when the values are substantially constant with a variation of less than 10% for the values, each wheel being associated with a module at the end of the method.

A tire pressure monitoring system (30) includes a data acquisition portion (101) that acquires data indicating a tire pressure and a tire temperature of the tire, from a sensor (50FL), a sensor (50FR), a sensor (50RL), and a sensor (50RR) mounted to the tire; a puncture determination portion (103) that determines whether the tire is punctured, based on a puncture determination threshold defined by a relationship between the tire pressure and the tire temperature; and a warning processing portion (105) that generates a warning indicating that the tire is punctured apart from a warning of a drop of the tire pressure when the puncture determination portion (103) determines that the tire is punctured.

At a control circuit of a TPM sensor, one or more of a first adjustment to the periodicity, a second adjustment to the content, and a third adjustment to the length of a message are determined based upon the operational history of the sensor. The adjustments are applied to the messages and adjusted messages are transmitted.

Received acceleration or motion information are analyzed and when the analysis of this information indicates that motion or acceleration is detected, received burst patterns from the other sensors are analyzed. Based upon analyzing the detected burst patterns from the other sensors, a first burst pattern is selectively altered to transmit according to a single communication format, the single format being for a single vehicle manufacturer.

A tire side device includes a vibration detection unit that outputs a detection signal according to a magnitude of vibration of a tire, an air pressure detection unit that detects the tire pressure, a data acquisition unit that calculates a contact length of the tire with a road surface based on the detection signal and acquires a wheel load data that is a data related to the wheel load based on the contact length, and a data transmission unit that transmits a data related to the tire pressure and the wheel load data. A vehicle side device includes a receiving unit that receives data on tire pressure and wheel load data, a threshold setting unit that sets an alarm threshold for tire pressure based on the wheel load data, and an alarm determination unit that determines that the tire pressure has decreased when the tire pressure indicated by the data on the tire pressure decreases below the alarm threshold.

A system for detecting pressure and wear conditions of tires that includes a module positioned inside each wheel of a vehicle. The module includes sensors, a processor, a transmitter and a power source for powering the module. The output from the sensors in each wheel is fed to the processors of each wheel for data processing and the data is transmitted by the transmitter in each wheel to a receiver and data processor located outside of the wheels. The data processor is designed to analyze the received processed data from the modules, and to provide alerts based on stored information and by comparing the processed data from the first wheel with the processed data from the second wheel.

A trailer diagnostic and monitoring system includes a system controller having a controller body, and a power unit for engage a wiring harness of the trailer. A location identification unit and wireless communication device are positioned within the controller body, and a plurality of hub sensor assemblies are positioned along the axle hubs of the trailer. Each of the assemblies including functionality for monitoring and reporting the temperature of a respective axle hub, and the pressure of the trailer tire secured to the respective axle hub. A process specific serial forwarder device communicatively links each of the hub sensor assemblies to the system controller. A trailer diagnostic and monitoring application for execution on a remote computing device includes functionality for communicating with the wireless communication device to receive trailer location information, tire pressure readings and axle hub temperatures.