Football sensing
An automated objective American-football evaluation system may include an American-style football, at least one sensor carried by the football, and electronics to: (a) receive a string of sensor signals from the at least one accelerometer; (b) determine a time of an initial impact of the football with a receiver based upon the received string of sensor signals; and (c) output a catch quality, the catch quality being based upon a portion of the string of sensor signals that is based upon the determined time of the initial impact of the football with the receiver.
1. An automated objective American-football evaluation system comprising:
an American-style football;
at least one sensor carried by the football; and
electronics to: (a) receive a string of sensor signals from the at least one sensor; (b) determine a time of an initial impact of the football with a receiver based upon the string of sensor signals; and (c) output a catch quality, the catch quality being based upon a first portion of the string of sensor signals that includes the time of the initial impact of the football with the receiver, wherein the catch quality comprises a ball securement rating, the ball securement rating being based upon a second portion of the string of sensor signals received from the time of the initial impact of the football with the receiver to a determined second time at which the football is secured.
2. The evaluation system of claim 1 , wherein the catch quality comprises a catch rating, the catch rating being based upon at least the first portions of the string of sensor signals received during a window of time containing the time of the initial impact of the football with the receiver.
3. The evaluation system of claim 2 , wherein the catch rating is based upon a comparison of (a) an amplitude of the first portion of the string of sensor signals at the time of the initial impact of the football with the receiver against (b) a predetermined threshold.
4. The evaluation system of claim 1 , wherein the electronics are to determine the time at which the football has been secured after the initial impact of the football with the receiver based upon an oscillation of at least one of the received sensor signals following the time of the initial impact of the football with the receiver.
5. The evaluation system of claim 1 , wherein the electronics are to determine a height of the football at the time of the initial impact of the football with the receiver.
6. The evaluation system of claim 5 , wherein the ball securement rating is based at least in part upon a combination of the height of the football at the time of the initial impact of the football with the receiver, the time of the initial impact of the football with the receiver and the determined second time at which the football has been secured.
7. The evaluation system of claim 1 , wherein the catch quality comprises a composite metric of a catch rating and a ball securement rating.
8. The evaluation system of claim 7 , wherein the catch rating is based upon at least the first portions of the string of sensor signals received during a window of time containing the time of the initial impact of the football with the receiver.
9. The evaluation system of claim 8 , wherein the catch rating is based upon a comparison of (a) an amplitude of the string of sensor signals at the time of the initial impact of the football with the receiver against (b) a predetermined threshold.
10. The evaluation system of claim 7 , wherein the ball securement rating being based upon the second portions of the string of sensor signals.
11. The evaluation system of claim 10 , wherein the electronics are to determine the time at which the football has been secured after initial impact based upon an oscillation of at least one of the received sensor signals following the time of the initial impact of the football with the receiver.
12. The evaluation system of claim 7 , wherein the electronics are to determine a height of the football at the time at which the ball initially impacts the receiver and a time at which the football has been secured and wherein the ball securement rating is based at least in part upon a combination of the determined height of the football at the time of the initial impact of the football with the receiver and the determined time at which the football has been secured.
13. An apparatus for use with a football, the apparatus comprising:
a sensor system including at least one accelerometer carried by the football, the at least one accelerometer to output a string of sensor signals;
circuitry to receive sensor outputs from the sensor system;
a processor connected to the circuitry to receive the sensor outputs; and
a non-transitory computer-readable medium containing instructions to direct the processor to (a) determine a time of an initial impact of the football with a receiver based upon the received sensor outputs; and (b) output a catch quality, the catch quality being based upon at least a first portion of the sensor outputs that is based upon the time of the initial impact of the football with the receiver, wherein the catch quality comprises a ball securement rating, the ball securement rating being based upon a second portion of the string of sensor signals received from the time of initial impact of the football with the receiver to a determined second time at which the football is secured.
14. The apparatus of claim 13 , wherein the catch quality comprises a catch rating, the catch rating being based upon at least a first portion of the string of sensor signals received during a window of time containing the time of the initial impact of the football with the receiver.
15. The apparatus of claim 14 , wherein the catch rating is based upon a comparison of (a) an amplitude of the first portion of the string of sensor signals at the time of the initial impact of the football with the receiver against (b) a predetermined threshold.
16. The apparatus of claim 13 , wherein the processor is to determine the time at which the football has been secured after the initial impact of the football with the receiver based upon an oscillation of the string of sensor signals following the time of the initial impact of the football with the receiver.
17. The apparatus of claim 13 , wherein the catch quality comprises a composite metric of a catch rating and a ball securement rating.
18. The apparatus of claim 13 , wherein the catch quality is based upon a determined type of throw of the football.
19. The apparatus of claim 13 , wherein the circuitry includes at least one analog to digital converter to convert analog sensor inputs to digital output signals.