A method and system for measuring a load on a tire while the vehicle traveling that include a microprocessor, a tire pressure sensor that is fixed to the tire, and an electromechanical sensor that is fixed to a point on the tire. The electromechanical sensor generates a beginning signal when the point begins to be part of the flat tire contact patch of the tire with the ground, and an ending signal when this point ceases to be part of the patch. The microprocessor calculates the patch contact time period, calculates the flat tire contact patch length from the radius of the tire and the ratio between the patch contact time period and the complete tire rotation period, and calculates the load on the tire from the tire pressure as measured by the pressure sensor and the length of the flat tire contact patch.

A method and system for measuring a load on a tire while the vehicle traveling that include a microprocessor, a tire pressure sensor that is fixed to the tire, and an electromechanical sensor that is fixed to a point on the tire. The electromechanical sensor generates a beginning signal when the point begins to be part of the flat tire contact patch of the tire with the ground, and an ending signal when this point ceases to be part of the patch. The microprocessor calculates the patch contact time period, calculates the flat tire contact patch length from the radius of the tire and the ratio between the patch contact time period and the complete tire rotation period, and calculates the load on the tire from the tire pressure as measured by the pressure sensor and the length of the flat tire contact patch.

Described herein are systems and methods for determination of rolling resistance from a sensor or sensors in a tire or tires for application in smart cars to provide feedback to interested parties, such as Departments of Transportation or tire manufacturers.

A disclosed airborne vehicle includes split-ring resonators (split ring resonators), which may be embedded within a material. Each split ring resonator may be formed from a three-dimensional (3D) monolithic carbonaceous growth and may detect an electromagnetic ping emitted from a user device. Each split ring resonator may generate an electromagnetic return signal in response to the electromagnetic ping. The electromagnetic return signal may indicate a state of the material in a position proximate to a respective split ring resonator. In some aspects, each may resonate at a first frequency in response to the electromagnetic ping when the material is in a first state, and may resonate at a second frequency in response to the electromagnetic ping when the material is in a second state. A resonant frequency of the 3D monolithic carbonaceous growth may be based on physical characteristics of the material.

A disclosed vehicle component may include at least one split-ring resonator, which may be embedded within a material. The split ring resonator may be formed from a three-dimensional (3D) monolithic carbonaceous growth and may detect an electromagnetic ping emitted from a user device. The split ring resonator may generate an electromagnetic return signal in response to the electromagnetic ping. The electromagnetic return signal may indicate a state of the material in a position proximate to a respective split ring resonator. In some aspects, the split-ring resonator may resonate at a first frequency in response to the electromagnetic ping when the material is in a first state, and may resonate at a second frequency in response to the electromagnetic ping when the material is in a second state. A resonant frequency of the 3D monolithic carbonaceous growth may be based on physical characteristics of the material.

Tires including a tire bodies formed of one or more tire plies are disclosed. In some implementations, tire plies may include a temperature sensor that may detect a temperature of a respective tire ply. The temperature sensor may include a ceramic material organized as a matrix and one or more split-ring resonators (SRRs). Each of the SRRs may have a natural resonance frequency configured to shift in response to one or more of a change in an elastomeric property or a change in the temperature of a respective one or more tire plies. The temperature sensor may include an electrically-conductive layer dielectrically separated from a respective one or more SRRs. A thickness each of the SRRs may be approximately between 0.1 micrometers (μm) and 100 μm.

A disclosed vehicle component may include at least one split-ring resonator, which may be embedded within a material. The split ring resonator may be formed from a three-dimensional (3D) monolithic carbonaceous growth and may detect an electromagnetic ping emitted from a user device. The split ring resonator may generate an electromagnetic return signal in response to the electromagnetic ping. The electromagnetic return signal may indicate a state of the material in a position proximate to a respective split ring resonator. In some aspects, the split-ring resonator may resonate at a first frequency in response to the electromagnetic ping when the material is in a first state, and may resonate at a second frequency in response to the electromagnetic ping when the material is in a second state. A resonant frequency of the 3D monolithic carbonaceous growth may be based on physical characteristics of the material.

In an example, a vehicle tire includes a tread portion, a sidewall portion, and a sensor module for estimating one or more parameters of the tire. The sensor module includes a detector patch that includes one or more capacitors, each of which has an electrostatic capacity that is variable due to at least deformation of each capacitor. The sensor module also includes an electronics unit connected to each capacitor and configured to control the sensor module. The detector patch is adhered to an inside of at least one of the tread portion or the sidewall portion. At least one of the capacitors is located on the inside of the at least one of the tread portion or the sidewall portion. The electronics unit is configured to estimate at least one of the parameters based on the electrostatic capacity of each capacitor.

An intelligent tire monitoring system includes a tire body, a sheet-shaped conductive polymer sensor, a micro control unit, an RF unit, a computer, and an RF circuit. The sheet-shaped conductive polymer sensor is affixed to an inner liner layer at a middle portion of a tire crown. One end of the sheet-shaped conductive polymer sensor is connected to the micro control unit through the RF unit, and the other end of the sheet-shaped conductive polymer sensor is connected to the computer through the RF circuit. The computer includes a power supply module, a communication port, a display screen, an audible alarm, a press-key input module, and a processor. The state of the tire is comprehensively determined by matching or combining a strain amplitude of the tire crown and an operating temperature with a fitting function.

In a road surface condition determining device, when determining a road surface condition, a vibration detection unit, a waveform processing unit and a data transmission unit for implementing a sensing function and a data transmission function are not set continuously to an active state for all tire side device, but at least only one tire side device is set to an active state. Remaining one or more is set to a sleep state. A reduction in power consumption of the tire side devices set to the sleep state can thus be achieved. Further, with regard to the at least one tire side device, since the sensing function and the data transmission function remain in the active state, the road surface condition can be reliably determined based on the road surface data of the tire side device.