A system for determining a tire change status in a vehicle is provided. The system includes at least one processing device and a storage device. The at least one processing device may be arranged to: calculate a value of at least one reference parameter which may be used in indirect tire pressure monitoring; store the calculated value of said at least one reference parameter in the storage device; retrieve a previously stored value of said at least one reference parameter from the storage device; determine a similarity parameter based on a similarity between the calculated value and the previously stored value of said at least one reference parameter; and determine a tire change status, indicating whether or not the tires have been re-filled or replaced, by comparing said similarity parameter with a threshold.

An apparatus and method is provided that includes measuring a tire pressure for at least one tire with at least one tire pressure sensor. The tire pressure sensor has at least a first resolution for transmitting pressure information and a second resolution for transmitting pressure information that is higher than the first resolution. If a measured tire pressure is determined to be above a predetermined pressure threshold, the apparatus and method identify whether the tire pressure sensor has experienced at least one predetermined vehicle operating characteristic, and/or identify whether the tire pressure sensor has been activated by a command. The tire pressure sensor is only locked into the second resolution if the tire pressure sensor has experienced the at least one predetermined vehicle operating characteristic or if the tire pressure sensor has been activated by the command.

Embodiments include methods, systems and computer readable storage medium for a method for detection and notification of a tire leak is disclosed. The method includes receiving, by a tire leak detection system, sensor data from one or more tires. The method further includes determining, by the tire leak detection system, an occurrence of a leak anomaly in at least one of the one or more tires based on the sensor data. The method further includes predicting, by the tire leak detection system, a time and/or distance the at least one of the one or more tires will function ineffectively. The method further includes outputting, by the tire leak detection system, a code to a user or server indicating a leak type associated with the leak anomaly.

Embodiments of the present invention relate to the technical field of vehicle electronics and disclose an upgrading method and apparatus for a tire pressure monitoring module and a tire pressure sensor. The method is applicable to a tire pressure sensor including a signal receiving module. The method specifically includes: controlling the signal receiving module to receive an upgrade file and save the upgrade file; and waking up a tire pressure monitoring module, and controlling the tire pressure monitoring module to read the saved upgrade file and upgrade the tire pressure monitoring module based on the upgrade file. The embodiments of the present invention can realize wireless upgrading of the tire pressure sensor, thereby improving the upgrading efficiency, reducing the upgrading costs, and improving the safety in upgrading of the tire pressure sensor.

A method of determining a status of a tyre monitoring device is disclosed. The tyre monitoring device includes a counter initiated on a first use of the tyre monitoring device on a wheel and the method includes: determining a current value of the counter; determining a status of the tyre monitoring device based on the current value of the counter; and providing an indication based on the determined status. In some examples, the status is a remaining service lifetime and the indication may be a replacement notification. A method of cross-checking data between tyre monitoring devices is also disclosed. The method includes receiving data from a plurality of tyre monitoring devices associated with respective tyres of a same vehicle; comparing the received data from different ones of the plurality of tyre monitoring devices; determining inconsistent data associated with at least one of the plurality of tyre monitoring devices based on the comparison; and providing an indication of the inconsistent data.

An apparatus for tire pressure monitoring comprises a case, a gas nozzle unit movably connected to the outside of the case, and a structure for tire pressure monitoring which is received in a receiving space in the case. The structure for tire pressure monitoring comprises a main body, a signal processing unit, a sensing unit connected to the signal processing unit, and a power unit to provide power. The main body has a first part and a second part. The first part is disposed on a top side of the second part; the first and the second parts are not on the same plane. The signal processing unit and the sensing unit are disposed on one side of the first part and on the top side of the second part, respectively. The power unit is disposed on a bottom side of the second part.

Disclosed herein are devices and systems for continuous control of tire pressure. In one aspect, a device for continuously controlling tire pressure includes a bracket, a fixed non-rotating member fixedly attached to the bracket, and a non-fixed rotating member rotatably attached thereto. The fixed non-rotating member has at least one first seal surface, the at least one seal surface configured to be in fluid communication with a compressed air source. The non-fixed rotating member has at least one second seal surface, wherein an air chamber defined within a volume between interacting the at least one first seal surface and the at least one second seal surface causes fluid communication between an interior space of the tire and the compressed air source.

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 device includes a first control element which transitions a sensor module between an active and an inactive mode. A second control element is configured to adjust currents drawn by the sensor module during the inactive modesuch currents corresponding to sensor readings. A processor is coupled by a power signal to a sensor module, which operates over an active sensor, a transition, and a data transfer state. Currents drawn during the active sensor state are substantially constant. During transition, currents decrease from the substantially constant current to a minimum current. During data transfer, currents vary between the substantially constant current and the minimum current. A logical element is configured to monitor the current drawn by the sensor module and, based on variations therein, determine the operating state of the sensor module. A method for using the processor is also disclosed.

A method of sensing wheel rotation can include: sensing magnetic force information in an environment of a wheel by a magnetometer to obtain measured magnetic force information; generating relative magnetic force information by performing mathematical operation processing in accordance with the measured magnetic force information, where the relative magnetic force information does not change with geomagnetic field and does change with a rotation angle of a wheel; and obtaining angle information related to the rotation angle of the wheel in accordance with the relative magnetic force information.