Tire deformation sensor and tire inflation system

• US 9,588,019 B2
• Filed: 11/30/2015
• Issued: 03/07/2017
• Est. Priority Date: 11/06/2012
• Status: Active Grant

• Current Assignee: Texas Research International Incorporated
• Original Assignee: Texas Research International Incorporated
• Inventors: Brushaber, Robert Philip
• Primary Examiner(s): Anwari, Maceeh
• Application Number:
  US14/954,016
• Publication Number:
  US 20160176249A1
• Time in Patent Office: 463 Days
• Field of Search: 701/29.2
• US Class Current: 1/1
• CPC Class Codes: B60C 23/066 by monitoring wheel-centre to ground distance
• CPC Class Codes: G01M 17/025 using infrasonic, sonic or ultrasonic vibrations

Abstract

A tire deformation sensing and tire inflation system for tires that makes use of ultrasonic sensors embedded in the bead lock of the tire to measure time intervals between transmitted ultrasonic signals and the echo received signals to and uses the information obtained to adjust the tire pressure through a central tire inflation system.

Claims

1. A tire deformation sensing and tire inflation system for a tire comprising:

a) at least one ultrasonic sensor embedded in a bead lock of the tire;

b) a counterweight embedded in the bead lock on the opposite side from said ultrasonic sensors;

c) a power source for said ultrasonic sensors;

d) a central tire inflation system deployed in the tire;

e) a data acquisition system to collect the time intervals between the ultrasonic signals transmitted and the echo signals received from said the at least one ultrasonic sensors;

f) software code to analyze collected data from data acquisition system to detect and measure the deformation of the tires; and

g) a central tire inflation system to adjust the tire deformation based on instructions from said software code.

2. The tire deformation sensing and tire inflation system for a tire of claim 1 wherein the power source for the system is supplied through a power harvesting system using the kinetic energy from the movement of the wheel.

3. The tire deformation sensing and tire inflation system for a tire of claim 2 wherein the power harvesting system using the kinetic energy from the movement of the wheel utilizes Piezo-transformers and/or embedded magnets to harvest the power.

4. The tire deformation sensing and tire inflation system for a steel belted tire of claim 1 wherein the power source for the system is supplied via a slip ring.

5. A method for sensing tire deformation and inflating a tire comprising the steps of:

a) measuring the time intervals between the ultrasonic signals transmitted and the echo signals received from at least one ultrasonic sensor embedded in the bead lock of the tire as the tire is turning;

b) acquiring the time intervals with a data acquisition system;

c) transmitting the acquired time intervals to software code that analyzes the information to detect and measure deformation of the tire and sending instructions to a central tire inflation system; and

d) inflating or deflating the tire based on the instructions of the software code related to the measured information on the deformation of the steel belting of the tire.

6. The method of sensing tire deformation and inflating a tire of claim 5 wherein the power source for the system is supplied through a power harvesting system using the kinetic energy from the movement of the wheel.

7. The method of sensing tire deformation and inflating a tire of claim 5 wherein the power harvesting system using the kinetic energy from the movement of the wheel utilizes Piezo-transformers and/or embedded magnets to harvest the power.

8. The method of sensing tire deformation and inflating a tire of claim 5 wherein the power source for the system is supplied via a slip ring.