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.

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.

A tire air pressure detection system and a vehicle body side device to detect air pressure of a plurality of tires. The vehicle body side device causes a transmission unit to transmit to all tire side devices, a transmission stop signal instructing transition to a transmission stop state and then the transmission unit transmits a transmission standby signal at a transmission strength that enables the signal to reach the tire side devices; and then the transmission unit transmits to the one of the tire side devices, a transmission request signal requesting a transmission of a signal including a unique identifier stored in that tire side device; and when it is determined that a reception unit has received a response signal in response to the transmission request signal, the transmission unit transmits a transmission standby signal and a transmission request signal to the tire side device corresponding to the next tire.

A tire pressure detection apparatus includes: a transmitter at each of a plurality of wheels with a tire; and a receiver at a vehicle body. The transmitter has: a sensing device having a pressure sensor outputting a detection signal related to a tire pressure of each of the plurality of wheels and an acceleration sensor detecting an acceleration including a centrifugal acceleration caused by rotation of the wheel and a gravitational acceleration; a first controller performing signal processing on the detection signal of the pressure sensor and creating a frame storing data related to the tire pressure; and a radio wave transmitter transmitting the frame. The receiver has: a radio wave receiver receiving the frame; and a second controller detecting a tire pressure based on the data related to the tire pressure stored in the received frame.

A tire pressure monitoring device includes a display, a receiver, a memory, and a processor. The receiver is configured to receive a first signal from a first sensor and a second signal from a second sensor. The memory stores a first and second communication protocols corresponding to the first and second sensors, respectively. The processor is in communication with the display, the receiver, and the memory and is configured to perform operations. The operations include selecting the first and second communication protocols based on the first and second signals, respectively, converting the first and second signals into first and second sets, respectively, of at least one of temperature data or pressure data corresponding to a first tire, and transmitting the first set and the second set of at least one of temperature data or pressure data to the display.

A method includes operating a transceiver of a tire pressure monitoring system in an active operation mode, where the transceiver includes a battery and a data storage device. The method includes determining whether the transceiver is coupled to an external power source, and determining whether the data storage device of the transceiver includes sensor identifier data stored thereon when the transceiver is not coupled to the external power source. The method further includes transitioning the transceiver from the active operation mode to a battery storage mode when the data storage device does not include sensor identifier data stored thereon and the transceiver is not coupled to the external power source.

The present application provides a programming method and a programming device based on tire pressure sensing, which is related to the technical field of pressure sensing. The programming method includes: transmitting a region identification including at least one of a country, a region and a customer to an intelligent terminal through near-field communication for requesting the intelligent terminal to automatically match a database with the region identification and return a manufacturer code corresponding to a preset vehicle model identification from the database; receiving the manufacturer code sent by the intelligent terminal through near-field communication; and programming the tire pressure sensing device based on the manufacturer code. The programming method avoids an operator frequently manually switching countries, regions and customers on the intelligent terminal to match with the database, and also avoids a situation that the tire pressure sensing device cannot work normally due to error of manual switching.

A system for setting multiple tire sensor identification codes includes a database and a handheld device. The database is for inputting and storing multiple vehicle owner information and multiple tire sensor identification codes associated with the vehicle owner information. The handheld device is for obtaining the multiple tire sensor identification codes from the database and transmitting the multiple tire sensor identification codes to multiple tire sensors so that each of the tire sensors stores one tire sensor identification code.

An assembly determines operating parameters of a tire. The assembly includes a tripod sensor mounted within an inner cavity of the tire underneath a crown portion and an innerliner on which the tripod sensor is mounted. The tripod sensor includes a tri-axial accelerometer for creating a circumferential signal for determining slip ratio, a lateral signal for determining a slip angle, and a radial signal for determining load on the tire.

A transmitter is configured to be integrated with a tire valve attached to a wheel. The transmitter includes a data generating unit, a transmitting unit, and a controlling unit. The data generating unit is configured to generate transmission data. The transmitting unit is configured to transmit the transmission data to a receiver that includes a setting unit that sets a threshold related to control of a vehicle in accordance with a type of the wheel. The controlling unit causes the transmitting unit to transmit the transmission data. The transmission data includes wheel identification information. The wheel identification information is required by the setting unit when setting the threshold and allows the setting unit to recognize the type of the wheel to which the tire valve is attached.