A pneumatic tire has a passive transponder incorporated therein that allows communication with a radio-frequency reader located outside the pneumatic tire. The passive transponder includes at least one radiating antenna and is embedded in an electrically insulating elastomeric blend to form a patch. The patch extends axially between an axially inner end of a carcass ply of the pneumatic tire and an inner surface of the pneumatic tire. The patch also extends radially at a distance between a bead toe of the pneumatic tire and a radially outer end of a bead core of the pneumatic tire.

A system for estimating a tire load of a tire includes a pressure sensor configured to generate a tire pressure signal; an acceleration sensor configured to generate a tire acceleration signal; a temperature sensor configured to generate a tire temperature signal; and at least one processor configured to calculate a duration of a contact patch based on the tire acceleration signal, calculate a vehicle speed based on the tire acceleration signal, determine at least one system model coefficient based on the tire pressure signal and the tire temperature signal, and calculate the tire load of the tire using a linear system model that relates tire pressure, the duration of the contact patch, and the vehicle speed to the tire load of the tire, where the linear system model further includes the at least one system model coefficient for calculating the tire load of the tire.

A system for estimating a tire load of a tire includes a pressure sensor configured to generate a tire pressure signal; an acceleration sensor configured to generate a tire acceleration signal; a temperature sensor configured to generate a tire temperature signal; and at least one processor configured to calculate a duration of a contact patch based on the tire acceleration signal, calculate a vehicle speed based on the tire acceleration signal, determine at least one system model coefficient based on the tire pressure signal and the tire temperature signal, and calculate the tire load of the tire using a linear system model that relates tire pressure, the duration of the contact patch, and the vehicle speed to the tire load of the tire, where the linear system model further includes the at least one system model coefficient for calculating the tire load of the tire.

Resonant sensors for environmental health risk detection are disclosed. An adhesive may include at least one meso-scale or micro-scale resonator embedded within a material that comprises at least a portion of the adhesive. The at least one meso-scale or micro-scale resonator may be formed from a composite material. Additionally, the at least one meso-scale or micro-scale resonator may include a plurality of first carbon particles configured to uniquely resonate in response to an electromagnetic ping based at least in part on a concentration level of the first carbon particles within the at least one meso-scale or micro-scale resonator.

A method for self-positioning tires and a tire pressure monitoring system are provided. The method for self-positioning tires includes: acquiring first position information detected by the first positioning circuit; acquiring second position information of each emitter respectively via corresponding second positioning circuit; and acquiring corresponding relative position information respectively between the receiver and each emitter based on the first position information of the receiver and the second position information of each emitter. In this way, compared with the method for achieving self-positioning function in the art, extra wires may not be needed and the origin wires of a vehicle may not be altered in the method of the present disclosure.

Resonant sensors for environmental health risk detection are disclosed. A mechanical member may include at least one meso-scale or micro-scale resonator disposed on a surface of the mechanical member. Additionally, the at least one meso-scale or micro-scale resonator may include a plurality of first carbon particles configured to uniquely resonate in response to an electromagnetic ping based at least in part on a concentration level of the first carbon particles within the at least one meso-scale or micro-scale resonator. Further, the at least one meso-scale or micro-scale resonator may be configured to resonate at a first frequency in response to the electromagnetic ping when the mechanical member is in a first state, and may be configured to resonate at a second frequency in response to the electromagnetic ping when the mechanical member is in a second state.

A patch-type passive acoustic waving sensing device includes a surface acoustic wave sensor and at least a first and second rubber sheets. A cross-section of each of the first and second rubber sheets is larger than that of the surface acoustic wave sensor. A bottom of the surface acoustic wave sensor is on an upper surface of the first rubber sheet, and a first central hole allowing the surface acoustic wave sensor to penetrate therethrough is formed in a center of the second rubber sheet. The surface acoustic wave sensor penetrates the first central hole, and the second rubber sheet is fixedly connected to the upper surface of the first rubber sheet. The surface acoustic wave sensor includes pins at the bottom thereof such that free ends of the pins are connected to an antenna, and the antenna and some of the pins are inside the first rubber sheet.

A rubber patch, which is useable for mounting an active electronic component to a tire, is described. The rubber patch includes a base having a connecting face and support face. The connecting face is substantially planar and is intended to be fixed to an internal surface of the tire. The support face is opposite the connecting face and is arranged to support the active electronic component. The rubber patch further includes a passive label arranged between the connecting face and the support face. The passive label is for identifying the tire and is provided with a memory for storing a unique identification data item pertaining to the tire. A corresponding tire monitoring system, which is configured to read at least the identification data item pertaining to the tire, also is described.

A pneumatic tire has a passive transponder incorporated therein that allows communication with a radio-frequency reader located outside the pneumatic tire. The passive transponder includes at least one radiating antenna and is embedded in an electrically insulating elastomeric blend to form a patch. The patch extends axially between an axially inner end of a carcass ply of the pneumatic tire and an inner surface of the pneumatic tire. The patch also extends radially at a distance between a bead toe of the pneumatic tire and a radially outer end of a bead core of the pneumatic tire.

A method for self-positioning tires and a tire pressure monitoring system are provided. The method for self-positioning tires includes: acquiring first position information detected by the first positioning circuit: acquiring second position information of each emitter respectively via corresponding second positioning circuit; and acquiring corresponding relative position information respectively between the receiver and each emitter based on the first position information of the receiver and the second position information of each emitter. In this way, compared with the method for achieving self-positioning function in the art, extra wires may not be needed and the origin wires of a vehicle may not be altered in the method of the present disclosure.