SENSOR MODULE FOR SENSING FORCES TO THE HEAD OF AN INDIVIDUAL AND WIRELESSLY TRANSMITTING SIGNALS CORRESPONDING THERETO FOR ANALYSIS, TRACKING AND/OR REPORTING THE SENSED FORCES

1 . A sensor comprising:

a flexible housing comprising a plurality of 3-axis accelerometers, the flexible housing being adapted to be worn by a user and being in contact with a body part of the user; and

a module coupled to the accelerometers including a processor which is adapted to sense forces experienced by the body part.

2 . The sensor device according to claim 1 , wherein the sensor is constructed within a headband.

3 . The sensor device according to claim 1 , wherein the flexible housing comprises at least three 3-axis accelerometers, and wherein the housing comprises flexible couplings between the at least three 3-axis accelerometers.

4 . The sensor device according to claim 3 , further comprising flexible circuits that couple the module to two of the at least three 3-axis accelerometers.

5 . The sensor device according to claim 1 , wherein at least one of the 3-axis accelerometers is positioned at the back of the head of the user in alignment with the median nuchal line.

6 . The sensor according to claim 1 , wherein the module is adapted to determine rotational acceleration from multiple measurements of linear acceleration.

7 . The sensor according to claim 6 , wherein the module is adapted to receive at least three measurements of linear acceleration from non-colinear points within the sensor.

8 . The sensor according to claim 6 , further comprising a sensor adapted to measure rotational velocity.

9 . The sensor according to claim 8 , wherein the sensor is adapted to measure rotational velocity includes a MEMS gyro.

10 . The sensor according to claim 9 , wherein the module is adapted to power on the MEMS gyro responsive to a detection of an event.

11 . The sensor according to claim 10 , wherein the event includes a measurement of an acceleration above a predefined threshold.

12 . The sensor according to claim 1 , further comprising a proximity sensor adapted to detect whether the sensor is in contact with the body part of the user.

13 . The sensor according to claim 12 , wherein the module is adapted to power on the sensor responsive to detection by the proximity sensor indicates that sensor is being worn by the user.

14 . The sensor according to claim 12 , wherein the proximity sensor includes a capacitive sensor pad.

15 . The sensor according to claim 1 , wherein the housing includes a plurality of rigid circuits associated with each of the plurality of 3-axis accelerometers.

16 . The sensor according to claim 15 , wherein the plurality of rigid circuits are coupled by a plurality of flexible circuits.

17 . The sensor according to claim 1 , further comprising, within the flexible housing, at least one antenna adapted to communicate with one or more external systems.

18 . The sensor according to claim 1 , further comprising, within the flexible housing, a capacitive sensor pad adapted to detect proximity of the sensor to the body part of the user.

19 . The sensor according to claim 1 , wherein at least one of the plurality of 3-axis accelerometers is coupled to a rigid circuit associated with the module, the at least one accelerometer being coupled to the rigid circuit by a flexible circuit.