Methods and apparatus forming part of a vehicle sensor system (100) comprising a plurality of sensor units (104a-f) and a controller (102). A sensor unit comprises: a motion sensor (417) configured to determine a first speed of the sensor unit; and a transmitter (402) configured to transmit first identification data to the controller if the first speed of the sensor unit exceeds a first threshold. The motion sensor is further configured to determine a second speed of the sensor unit a period of time after determination of the first speed of the sensor unit, and the transmitter is configured to transmit to the controller second identification data if the second speed of the sensor unit exceeds a second threshold. The controller comprises: a receiver (304) configured to receive the first identification data, and further configured to receive the second identification data a period of time later; and a sensor unit assigner (320) configured to assign the sensor unit to the controller if the first identification data and the second identification data are received.

A method and an apparatus configured to acquire, as acceleration information, a peak level a.sub.k which is a magnitude of a peak on a positive side or a negative side of an acceleration signal in a tire circumferential direction or a tire width direction detected by an acceleration sensor, or a peak interval b.sub.k which is a time interval between peaks, or acquire the peak level a.sub.k or the peak interval b.sub.k of a differential acceleration signal in a tire radial direction obtained by differentiating the acceleration signal in the tire radial direction; calculate ratios P.sub.k, Q.sub.k of a difference between the acquired acceleration information a.sub.k, b.sub.k and average values A.sub.k1 of the acceleration information to the average values; and determine that the acceleration sensor is detached from the inside of the tire when the calculated ratio P.sub.k, Q.sub.k exceeds a preset threshold value K.sub.p, K.sub.q by multiple times successively.

A system includes a computer including a processor and a memory, the memory including instructions executable by the processor to identify a degraded state of a vehicle component when a component usage exceeds a first threshold and a weather datum exceeds a second threshold, and then actuate the vehicle component in response to the degraded state.

A method of operating a Tire Pressure Monitoring System (TPMS) includes executing tire pressure monitoring of at least one tire installed on a vehicle in a first mode, and transmitting frequency signal loss information to a center if a loss of a frequency signal in the first mode occurs in a designated time period.

Systems and methods of for tire maintenance using machine learning are provided. The system receives one or more values comprising sensor data and a unique identifier associated with the tire. The system can retrieve historical inspection data associated with the unique identifier of the tire. The system can generate a matrix comprising a first dimension based on timestamps and a second dimension based on the one or more values and the historical inspection data. The system can predict, via input of the matrix into a machine learning model constructed, an output matrix comprising an indication to perform a type of maintenance and at least one tire maintenance category. The system can provide the indication to perform the type of maintenance for the tire during the time interval and the at least one tire maintenance category.

A duplex Bluetooth transmission tire pressure system and a method thereof are provided. The system includes a Bluetooth tire pressure detector and a transceiver host, and the two can duplex Bluetooth transmit to each other, so that to complete locating and tire condition detecting. The transceiver host controls a locating program that controls the Bluetooth tire pressure detector to start or stop and limit the transmitting packet of the tire condition program of the Bluetooth tire pressure detector.

A tire monitoring device and method in which an error can be detected and indicated. The tire monitoring device includes an indicator and a wireless communication interface. The method of operating the tire monitoring device includes: receiving an instruction to measure a tire pressure via the wireless communication interface; measuring a tire pressure; determining an error status of the tire pressure monitoring device; and responsive to a determination that the error status is not indicative of an error, activating the indicator to provide an indication based on the tire pressure.

A dual tire pressure monitoring system (TPMS) and wheel torque sensor system generates a single wireless signal containing both tire pressure data and wheel strain data. The wheel strain data is functionally related to wheel torque. The dual sensor has a transceiver that generates the wireless signal for a remote controller. A body of the dual sensor is positioned on the interior of the wheel under the tire, near the valve stem. The wheel torque is used to control braking, propulsion or steering of a Highly Automated Driving (HAD) vehicle, and to improve vehicle stability control and vehicle diagnostics.

A sensor failure determination apparatus includes a data acquisition unit, an arithmetic processing unit, and a determination unit. The data acquisition unit acquires data for a physical quantity measured by a sensor attached to a tire. The arithmetic processing unit includes a coding unit that generates feature amount data by applying a convolutional operation to the data acquired by the data acquisition unit, and a decoding unit that applies an inverse operation to the feature amount data to reproduce data. The determination unit determines whether the sensor has failed based on the data acquired by the data acquisition unit and the data reproduced by the arithmetic processing unit.

Disclosed are examples for detecting a displacement of a sensor within a tire. A baseline signal strength is compared to a measured signal strength. When a calculated comparison value (e.g., delta standard deviation) meets or exceeds a threshold value, the sensor is determined to be displaced from the expected location in the tire. When a sensor is determined to be displaced or otherwise loose from the expected location within the tire, an alert can be generated to provide notice to the vehicle driver or other entity of the issue so that the issue can then be remedied.