Method and apparatus are disclosed for activation of tire pressure measurement systems. An example vehicle includes a door including a handle sensor, a tire pressure measurement system (TPMS) sensor, a communication module, a display, and a controller. The controller is to activate the TPMS sensor responsive to detecting, via the handle sensor, engagement of a handle and collect, via the communication module, a measurement from the TPMS sensor upon activation. The controller also is to present, via the display, a low-pressure alert in response to determining the measurement is less than a threshold.

This disclosure generally pertains to systems and methods related to tire air pressure notifications. An example method that can be executed by a processor in a vehicle can include detecting a tire inflation operation performed upon a wheel of the vehicle and determining that air is escaping out of a tire of the wheel of the vehicle during the tire inflation operation. The processor may then issue an alert based on determining that air is escaping out of the tire. The alert may be provided in various ways such as, for example, via a haptic signal transmitted through a vibration element located in the wheel of the vehicle and/or by waggling the wheel of the vehicle. In an example implementation, waggling the wheel of the vehicle may be carried out by the processor by operating a steering wheel control system of the vehicle.

A wireless vehicle data communications device is adapted for mounting on a wheel hub assembly of a vehicle and incorporates a self-generating electrical power supply. The vehicle data communications device includes a housing, a microprocessor located inside the housing, a signal transmitting device, a signal receiving device, an electric generator, and an energy storage and supply medium. The housing is adapted to rotate simultaneously with the wheel hub assembly when the vehicle is in motion. The electric generator include a plurality of wire coils and magnets. One of the wire coils and magnets is attached to an independently influenced components carrier, and the other of the wire coils and magnets is designed to rotate substantially simultaneously with the housing. The wire coils and magnets are arranged such that rotation of the housing relative to the components carrier generates a magnetic field and induces an electric current.

A tire condition monitoring apparatus includes a tire-based sensor configured to sense tire operating conditions and transmit a tire condition signal including the sensed tire operating conditions. The apparatus also includes a vehicle-based controller configured to receive the tire condition signal and monitor the tire operating conditions. At least one of the sensor and the controller are configured to determine that a tire pressure adjustment condition exists in response to determining, based on the sensed operating conditions, that a predetermined change in the number of moles of air in the tire has taken place.

A pressure sensing assembly configured to be attached to a bicycle wheel having a tire and a rim mounted to the tire. The pressure sensing assembly includes a housing, a pressure transmitting member, a sensing chamber defined by the housing and the pressure transmitting member, and a sensing element. The pressure transmitting member is coupled the housing and has a central portion offset from the plane in a first direction. The sensing element is offset from the plane in a second direction opposite the first direction. The pressure transmitting member is configured to transmit a pressure in the tire to the sensing element via the sensing chamber.

A window assembly for a vehicle includes a glass window panel and a display device disposed at an interior surface of the glass window panel. The display device is operable to backlight or illuminate at least one icon or alphanumeric character. With the window assembly mounted at a vehicle, and when the at least one icon or alphanumeric character is backlit or illuminated, the at least one icon or alphanumeric character is viewable through the glass window panel by a person exterior the vehicle. With the window assembly mounted at a vehicle, the display device is activated to display an icon responsive to determination that an in-cabin temperature of the vehicle is above a threshold level.

A vehicle jack locator system for a vehicle that incorporates a light source such as an LED to direct the operator to the recommended position for the load engaging saddle of a jack is disclosed. The vehicle jack locator system allows the operator to see, even in dark or poorly illuminated environments, the recommended place to position the jack saddle. The system incorporates a vehicle rocker panel having an outer surface and an underside positioned below the outer surface, a rocker panel jack attachment point on the underside of the panel for receiving the jack saddle, a jack placement indicator light positioned on the outer surface of the rocker panel at a point above the jack attachment point and near a tire, and a power system for selectively energizing the light. The power system is a tire pressure sensor system that includes tire pressure sensors and an electronic control module.

A vehicle jack locator system for a vehicle that incorporates a light source such as an LED to direct the operator to the recommended position for the load engaging saddle of a jack is disclosed. The vehicle jack locator system allows the operator to see, even in dark or poorly illuminated environments, the recommended place to position the jack saddle. The system incorporates a vehicle rocker panel having an outer surface and an underside positioned below the outer surface, a rocker panel jack attachment point on the underside of the panel for receiving the jack saddle, a jack placement indicator light positioned on the outer surface of the rocker panel at a point above the jack attachment point and near a tire, and a power system for selectively energizing the light. The power system is a tire pressure sensor system that includes tire pressure sensors and an electronic control module.

A bicycle tire pressure cap, used with a bicycle tire valve, comprising a metal case, an anti-leak washer, a ventilation disc, a rubber gasket, a floating holder, a warning plug, a spring and a transparent cover. The bicycle tire pressure has a simple structure, low failure rate, low cost, and can quickly indicate whether the tire pressure is sufficient and effectively enhance the riding safety.

A valve stem system includes a valve stem that is fluidly coupled to a tire thereby facilitating the valve stem to selectively inflate and deflate the tire. A sensing unit is coupled to the valve stem and the sensing unit is visible on the valve stem. The sensing unit is in fluid communication with the valve stem to sense air pressure within the tire thereby facilitating the sensing unit to display the air pressure within the tire. A valve stem assembly includes a pressure sensing body and a valve core configured to threadedly engage the tire stem and regulate air flow from a tire. The pressure sensing body includes plunger that responds to pressure fluctuations in the tire and provides a continuous measurement of air pressure.