Patent ID: 8672649

Claim:
A fan system, wherein the fan system comprises: (a) a hub, wherein the hub is configured to rotate; (b) a plurality of fan blades mounted to the hub; (c) a motor, wherein the motor is in communication with the hub, wherein the motor is operable to rotate the hub; (d) a motor control module in communication with the motor, wherein the motor control module is configured to control operation of the motor; and (e) a plurality of sensors, wherein the sensors are configured to sense a plurality of parameters associated with operation of the fan system, wherein the sensors are in communication with the motor control module, wherein the control module is configured to stop rotation of the hub in response to a value communicated from the one or more of the plurality of sensors exceeding a predetermined threshold value, wherein the predetermined threshold value is representative of an occurrence of a condition, wherein the condition is external of the fan system, such that the control module is programmed with a control algorithm configured to stop rotation of the hub in response to the occurrence of a condition that is external of the fan system.