US Patent 11109808 Intelligent fitness and sports mouthguard

Various examples are provided for intelligent mouthguards that can be used in fitness and sport activities. In one example, an intelligent mouthguard system includes a mouthguard including sensors and an internal module in communication with the sensors. The sensors can include a nine-axis inertial sensor comprising a three-axis magnetometer, a three-axis accelerometer and a three-axis gyroscope. The three-axis magnetometer can provide a reference plane in relation to the earth's magnetic field for the three-axis accelerometer and the three-axis gyroscope. The internal module can provide sensor data to an external processing unit when located in an oral cavity.