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System to Improve Tire Health Analysis

IP.com Disclosure Number: IPCOM000244340D
Publication Date: 2015-Dec-03
Document File: 6 page(s) / 472K

Publishing Venue

The IP.com Prior Art Database

Abstract

Disclosed is a sensor system embedded into vehicle tires to continually monitor performance variables and tire components for abrupt or gradual changes that indicate tire instability or other tire health problems. The system notifies the vehicle operator in real time upon detection of a tire health problem.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 44% of the total text.

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System to Improve Tire Health Analysis

In regard to the health status of tires, a driver has no way to know in real time (especially while driving) if the tires are afflicted with problems such as tire deformation, damages in specific zones, a specific type of wear reaching recommended limits, the temperature of the tire(s), or other detailed issues. This might put the driver in danger if one or more tire fails while traveling. If a driver suspects a problem, then the driver must stop the car to determine what is wrong or take the vehicle to a professional mechanic or tire specialist. Current systems can monitor tire pressure or wear, but fail to identify specific problems and do not apply to airless tires.

The novel contribution is a tire assembly system that includes one or more grids of wires between the different plies . The grid is made of an electrically charged semiconductor material. Sensors connected to the bead, which is connected to the tire rim, read the charges to detect the specific position of fluctuations or interruptions . Any aberrations show in readouts that identify patterns associated with alterations in the health of the tire (e.g., shredded portions, rub wear near/beyond limits (percentage of usage), inadequate temperature for this type of tire, internal or external malformation in the tire, etc.). The readouts provide the data needed to make several types of diagnosis on the use of the tire.

Additionally, the system can provide a certain level of diagnostics on CASTER/CAMBER/TOE (IN OR OUT), depending on the way analysts evaluate the sensor data; developers are attempting to make the belting around the tire a set of sensors or grid . The system also identifies when the tire has impacted anything else on the vehicle (e.g., struts, suspension, etc.) and if the impact deformed the tire enough to cause rim damage. The information allows the system to calculate approximate force of the impact and then alert the user/driver the need for any additional checks).

Figure 1: Examples of tire health problems

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With this system, the structure of the tire comprises different electrically chargeable grids (Figure 2: red, blue and green lines) built in-between the tire plies. The wires connect to the tire bead (Figure 2: 9), which supplies it the electricity. The grids are connected to sensors within the tire, near the bead.

Figure 2: Structure of the tire with the novel system

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Figure 3: Sensors to data analysis and storage

Figure 4: The number of sensors can vary; every sensor receives the data form a part of the tire.

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For sensor operation and computer analysis, the sensors collect the conductivity measurements of the wires connected to it. The sensors have potentiometers to receive the voltage of the wires and send the values to the sensor chip memory . The sensors consolidate data and send it to the car computer in a continuous stream .

Example of data sent by a sensor: Sensor...