SYSTEMS AND METHODS FOR REMOTELY SENSING AND ASSESSING COLLISION IMPACTS

• US 20150377694A1
• Filed: 06/23/2015
• Published: 12/31/2015
• Est. Priority Date: 06/25/2014
• Status: Abandoned Application

• Current Assignee: Board of Trustees of The University of Alabama (University of Alabama System)
• Original Assignee: Board of Trustees of The University of Alabama (University of Alabama System)
• Inventors: Shepard, W. Steve Jr.
• Application Number:
  US14/747,666
• Publication Number:
  US 20150377694A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A42B 3/046 Means for detecting hazards or accidents
• CPC Class Codes: A61B 2503/10 Athletes
• CPC Class Codes: A61B 5/1113 Local tracking of patients, e.g. in a hospital or private home
• CPC Class Codes: G01H 3/00 Measuring characteristics of vibrations by using a detector in a fluid G01H7/00, G01H9/00, G01H11/00 take precedence
• CPC Class Codes: G01L 5/0052 measuring forces due to impact G01L5/0061, G01L5/14 take precedence; impact testing of structures G01M7/08; impact testing of material G01N3/00
• CPC Class Codes: G01M 7/08 Shock-testing
• CPC Class Codes: G01S 3/00 Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received position-fixing by co-ordinating a plurality of determinations of direction or position lines G01S5/00
• CPC Class Codes: G01S 5/018 Involving non-radio wave signals or measurements
• CPC Class Codes: G01S 5/18 using ultrasonic, sonic, or infrasonic waves

Abstract

Various implementations provide systems and methods for remotely detecting and assessing collision impacts using one or more acoustical sensors, such as using acoustical sensors to detect helmet collisions on an athletic playing field. For example, at least one acoustical sensor is disposed adjacent an athletic playing field and remotely from the one or more players on the athletic playing field. A processor of a computing device in communication with the acoustical sensor is configured for identifying whether the acoustical signal indicates a collision event occurred between a helmet and another object. The processor may also be configured for identifying a location on the playing field where the collision event occurred and/or identifying one or more characteristics of the acoustical signal to determine the amount of force, the duration, the speed, the acceleration, and/or the location of the collision event on the helmet.

Claims

1. A system for remotely detecting a helmet collision on athletic playing field comprising:

at least one acoustical sensor disposed adjacent an athletic playing field, the acoustical sensor being remotely located from a player on the athletic playing field;

a computing device comprising a processor and a memory, the computing device being remotely located from one or more players participating within the boundary of the playing field, and the processor configured for;

receiving an acoustical signal from the acoustical sensor; and

identifying whether the acoustical signal indicates a collision event of an object with a helmet.

2. The system of claim 1, wherein the processor is further configured for identifying a location of the collision event relative to boundaries of the athletic playing field in response to identifying the collision event, and in response to the location being within the boundary of the athletic playing field, storing data associated with the collision event in the memory.

3. The system of claim 1, wherein the processor is further configured for identifying one or more characteristics of the acoustical signal indicative of the collision event, the one or more acoustical signal characteristics defining the acoustic signature of the acoustical signal.

4. The system of claim 3, wherein the one or more characteristics of the acoustical signal may be selected from the group consisting of:

acoustic pressure, acoustic energy, maximum acoustic pressure, signal duration, acoustic pressure at one or more discrete frequencies, acoustic pressure at frequencies corresponding to the free-vibration modes of the helmet, acoustic energy at one or more discrete frequencies, wavelets, acoustic radiation mode maximum amplitude(s), acoustic radiation mode response amplitude versus time, energy in acoustic radiation mode(s), envelope of acoustic radiation mode(s) amplitude, and acoustic radiation mode amplitude decay.

5. The system of claim 4, wherein the processor is further configured for calculating an adjustment for the acoustic energy of the received acoustical signal based on a location on the playing field of the collision event, the adjustment being associated with an amount of spreading expected for the acoustic energy as the acoustical signal propagates from the collision event.

6. The system of claim 1, wherein the processor is further configured for converting at least a portion of the acoustical signal to a numerical value associated with an amount of force associated with the collision event, and storing the numerical value in the memory.

8. The system of claim 1, wherein the processor is further configured for identifying an energy level of the collision event and storing the identified energy level in the memory.

13. The system of claim 1, wherein the processor is further configured for identifying an amount of force or severity associated with the collision event, storing the identified amount of force, and generating a message comprising the identified amount of force.

15. The system of claim 13, wherein the processor is further configured for identifying and storing in the memory a location and direction of impact of the force on the helmet, and the message further comprises the location and direction of impact on the helmet.

16. The system of claim 13, wherein identifying the amount of force associated with the collision event comprises comparing a maximum acoustic pressure associated with the received signal to a range of expected acoustic pressures associated with each of one or more force amounts, and identifying the amount of force associated with the range of expected acoustic pressures that includes the maximum acoustic pressure of the received signal.

17. The system of claim 1, wherein identifying whether the acoustical signal indicates the collision event comprises comparing a value associated with the acoustical signal to a range of expected values indicating the occurrence of the collision event.

18. The system of claim 1, wherein the processor is further configured for identifying a duration of the collision event, storing the duration in the memory, and generating a message comprising the duration of the collision event.

19. The system of claim 1, wherein the processor is further configured for identifying a speed or acceleration of the collision event, storing the speed or acceleration in the memory, and generating a message comprising the speed or acceleration.

24. The system of claim 1, wherein the at least one acoustical sensor comprises a first acoustical sensor, a second acoustical sensor, and a third acoustical sensor, the first, second, and third acoustical sensors being remotely located from each other.

7. (canceled)

9-12. -12. (canceled)

14. (canceled)

20-23. -23. (canceled)

25-37. -37. (canceled)

38. A system for correlating a helmet collision event with an acoustical signal signature comprising:

a helmet and an object for colliding with the helmet;

at least one acoustical sensor disposed remotely from the helmet and the object; and

a computing device comprising a processor and a memory, the processor configured for;

receiving an acoustical signal from the acoustical sensor at a certain time;

receiving collision characteristic data associated with the collision of the helmet and the object at the certain time; and

associating the acoustical signal at the certain time with the collision characteristic data.

39. The system of claim 38, wherein the collision characteristic data comprises an amount of force at which the object is collided with the helmet, and the processor is further configured for associating the amount of force with an energy level of the acoustical signal associated with the collision event.

40. The system of claim 38, wherein the collision characteristic data comprises a duration for which the object is collided with the helmet, and the processor is further configured for associating the duration with the total acoustic energy of the collision.

41. The system of claim 38, wherein the collision characteristic data comprises a duration for which the object is collided with the helmet, and the processor is further configured for associating the duration with the duration of a vibration or acoustic mode signal associated with the helmet characteristics under collision.

42. The system of claim 38, wherein the collision characteristic data further comprises an impact location on the helmet at which the object is collided with the helmet, and the processor is further configured for associating the impact location with the amplitude of a helmet free-vibration mode or acoustic radiation mode of the acoustical signal associated with the collision event.

43-46. -46. (canceled)

47. A system for remotely detecting a collision of at least two objects comprising:

at least one acoustical sensor remotely located from a first object and a second object;

a computing device comprising a processor and a memory, the computing device being remotely located from the first and second objects, and the processor configured for;

receiving an acoustical signal from the acoustical sensor; and

identifying whether the acoustical signal indicates a collision event of the first object with the second object.

48. (canceled)