Impact tool angular velocity measurement system

1. An impact tool comprising:

an output drive;

an anvil coupled to the output drive, the anvil having an axis of rotation and including an anvil impact surface configured to rotate about the axis of rotation, the anvil impact surface including an outer end positioned radially outward from the axis of rotation;

a hammer configured to apply a rotational impact force on the anvil to rotate the output drive, the hammer including a hammer impact surface configured to engage the anvil impact surface;

a plurality of spaced apart targets located on a surface of the anvil, the surface of the anvil and plurality of spaced apart targets located radially inward toward the axis of rotation from the outer end of the anvil impact surface; and

an anvil angle sensor located proximate to the surface of the anvil, the anvil angle sensor configured to detect respective ones of the plurality of spaced apart targets;

a second plurality of spaced apart targets located on a surface of the hammer; and

a hammer angle sensor located proximate to a surface of the hammer, the hammer angle sensor configured to detect respective ones of the second plurality of spaced apart targets;

a controller electrically coupled with the anvil angle sensor and the hammer angle sensor,

wherein the anvil angle sensor is configured to generate a first signal in response to detection of one or more of the plurality of spaced apart targets by the anvil angle sensor and the hammer angle sensor is configured to generate a second signal in response to detection of one or more of the second plurality of spaced apart targets by the hammer angle sensor, the first signal and the second signal being furnished to the controller, and

wherein the controller determines at least one of an angular position of the hammer, an angular position of the anvil, and angular position of the output drive, an angular velocity of the hammer, an angular velocity of the anvil, an angular velocity of the output drive, an angular kinetic energy in the hammer, and a quantity of energy delivered to the anvil by the hammer based at least partially on the first signal and the second signal.

2. The impact tool as recited in claim 1 , further comprising a second anvil angle sensor located proximate to the surface of the anvil and adjacent to the anvil angle sensor, the second anvil angle sensor configured to detect respective ones of the plurality of spaced apart targets.

3. The impact tool as recited in claim 2 , wherein the anvil sensor and the second anvil sensor are configured to detect respective ones of the plurality of spaced apart targets to indicate angular movement of the anvil in one or both of a clockwise rotation or a counterclockwise rotation.

4. The impact tool as recited in claim 1 , further comprising:

a controller electrically coupled with the anvil angle sensor,

wherein the anvil angle sensor is configured to generate a signal in response to detection of one or more of the plurality of spaced apart targets by the anvil angle sensor, the signal being furnished to the controller, and

wherein the controller determines at least one of an angular position of the anvil, an angular position of the output drive, an angular velocity of the anvil, an angular velocity of the output drive, and a quantity of energy delivered to the anvil by the hammer based at least partially on the signal.

5. The impact tool as recited in claim 1 , further comprising a second hammer angle sensor located proximate to the surface of the hammer and adjacent to the hammer angle sensor, the second hammer angle sensor configured to detect respective ones of the second plurality of spaced apart targets.

6. The impact tool as recited in claim 5 , wherein the hammer sensor and the second hammer sensor are configured to detect respective ones of the plurality of spaced apart targets to indicate angular movement of the hammer in one or both of a clockwise rotation or a counterclockwise rotation.

7. The impact tool as recited in claim 1 , further comprising a transmitter configured to wirelessly transmit a signal generated by the controller, the signal containing data indicative of at least one of an angular position of the hammer, an angular position of the anvil, an angular position of the output drive, an angular velocity of the hammer, and angular velocity of the anvil, an angular velocity of the output drive, an angular kinetic energy in the hammer, and a quantity of energy delivered to the anvil by the hammer based at least partially on the first signal and the second signal.

8. The impact tool as recited in claim 1 , further comprising a data storage, the data storage configured to store data generated by the controller that is indicative of at least one of an angular position of the hammer, an angular position of the anvil, an angular position of the output drive, an angular velocity of the hammer, an angular velocity of the anvil, an angular velocity of the output drive, an angular kinetic energy in the hammer, and a quantity of energy delivered to the anvil by the hammer based at least partially on the first signal and the second signal.

9. The impact tool as recited in claim 1 , wherein respective ones of the plurality of spaced apart targets comprises one or more of ferromagnetic markings, capacitive markings, optical indicia, physically detectable markings, and electronically detectable markings.

10. The impact tool as recited in claim 1 , further comprising:

a tool housing; and

a gyroscopic sensor disposed within the tool housing,

wherein the gyroscopic sensor is configured to detect rotation of the tool housing about an axis coincident with the axis of rotation of the anvil.

11. The impact tool as recited in claim 1 , further comprising an accelerometer configured to detect an impact between the hammer and the anvil.

12. The impact tool as recited in claim 1 , further comprising:

a motor configured to furnish an output torque to the hammer; and

a motor sensor configured to detect the output torque furnished by the motor.

13. The impact tool as recited in claim 1 , further comprising at least one strain gauge disposed on the anvil, the at least one strain gauge configured to detect a torque generated by the anvil.

14. An impact tool comprising:

an output drive;

an anvil coupled to the output drive, the anvil having an axis of rotation and including an anvil impact surface configured to rotate about the axis of rotation, the anvil impact surface including an outer end positioned radially outward from the axis of rotation;

a hammer configured to apply a rotational impact force on the anvil to rotate the output drive, the hammer including a hammer impact surface configured to engage the anvil impact surface;

a first plurality of spaced apart targets located on a surface of the anvil, the surface of the anvil located radially inward toward the axis of rotation from the outer end of the anvil impact surface;

an anvil angle sensor located proximate to the surface of the anvil, the anvil angle sensor configured to detect respective ones of the plurality of spaced apart targets;

a second plurality of spaced apart targets located on a surface of the hammer; and

a hammer angle sensor located proximate to a surface of the hammer, the hammer angle sensor configured to detect respective ones of the second plurality of spaced apart targets;

a controller electrically coupled with the anvil angle sensor and the hammer angle sensor, the anvil angle sensor configured to generate a first signal in response to detection of one or more of the plurality of spaced apart targets by the anvil angle sensor and the hammer angle sensor configured to generate a second signal in response to detection of one or more of the second plurality of spaced apart targets by the hammer angle sensor, the first signal and the second signal being furnished to the controller, wherein the controller determines at least one of an angular position of the hammer, an angular position of the anvil, an angular position of the output drive, an angular velocity of the hammer, an angular velocity of the anvil, an angular velocity of the output drive, an angular kinetic energy in the hammer, and a quantity of energy delivered to the anvil by the hammer based at least partially on the first signal and the second signal.

15. The impact tool as recited in claim 14 , further comprising

a second anvil angle sensor located proximate to the surface of the anvil and adjacent to the anvil angle sensor, the second anvil angle sensor configured to detect respective ones of the plurality of first spaced apart targets; and

a second hammer angle sensor located proximate to the surface of the hammer and adjacent to the hammer angle sensor, the second hammer angle sensor configured to detect respective ones of the second plurality of spaced apart targets.

16. An impact tool comprising:

an output drive;

an anvil coupled to the output drive, the anvil having an axis of rotation and including an anvil impact surface configured to rotate about the axis of rotation, the anvil impact surface including an outer end positioned radially outward from the axis of rotation;

a hammer configured to apply a rotational impact force on the anvil to rotate the output drive, the hammer including a hammer impact surface configured to engage the anvil impact surface;

a first plurality of spaced apart targets located on a surface of the anvil, the surface of the anvil located radially inward toward the axis of rotation from the outer end of the anvil impact surface;

an anvil angle sensor located proximate to the surface of the anvil, the anvil angle sensor configured to detect respective ones of the plurality of spaced apart targets and to generate a first signal in response thereto;

a second plurality of spaced apart targets located on a surface of the hammer;

a hammer angle sensor located proximate to a surface of the hammer, the hammer angle sensor configured to detect respective ones of the second plurality of spaced apart targets and to generate a second signal in response thereto; and

a controller electrically coupled with the anvil angle sensor and the hammer angle sensor and configured to receive the first signal and the second signal, wherein the controller determines at least one of an angular position of the hammer, an angular position of the anvil, an angular position of the output drive, an angular velocity of the hammer, an angular velocity of the anvil, an angular velocity of the output drive, an angular kinetic energy in the hammer, and a quantity of energy delivered to the anvil by the hammer based at least partially on the first signal and the second signal;

a second anvil angle sensor located proximate to the surface of the anvil and adjacent to the anvil angle sensor, the second anvil angle sensor configured to detect respective ones of the first plurality of spaced apart targets and to generate a third signal in response thereto; and

a second hammer angle sensor located proximate to the surface of the hammer and adjacent to the hammer angle sensor, the second hammer angle sensor configured to detect respective ones of the second plurality of spaced apart targets and to generate a fourth signal in response thereto, the third signal and the fourth signal being furnished to the controller,

wherein the controller determines at least one of the angular position of the hammer, the angular position of the anvil, the angular position of the output drive, the angular velocity of the hammer, the angular velocity of the anvil, the angular velocity of the output drive, the angular kinetic energy in the hammer, and the quantity of energy delivered to the anvil by the hammer based at least partially on the third signal and the fourth signal.