Patent ID: 8276454

Claim:
A monitoring system for monitoring status and working conditions of a bearing, adapted to be contained inside the bearing and self-supplied through an energy-generating system based on an inertial system, the inertial system being able to take the energy to self-supply itself directly from the mechanical rotation energy of the bearing, the monitoring system comprising: a generator adapted to output an alternate current; a rectifying, stabilizing and accumulating circuit connected to the generator and adapted to receive the alternate current and to supply a voltage to the monitoring system; a system for collecting data coming from sensors connected to the rectifying, stabilizing and accumulating circuit; a wireless transmission circuit, connected to the data collecting system, for transmitting collected information to an external data-analyzing unit, also configured for wireless communication and for receiving collected data; a circuit for accumulating energy for turning the monitoring system on; and an energy reserve adapted to oscillate a mass of the generator for turning the monitoring system on, the energy reserve being composed of a system that is configured to recognize when the bearing is rotating and activate the oscillation; wherein the system that is adapted to recognize is a switch activated by a centrifugal force generated by a rotation, the switch being an electric contact comprising a fixed part and a moving or flexible part, the moving or flexible part at rest being an open circuit, whereby, when the moving part is subjected to a certain radial acceleration, the moving part is configured to move or be distorted until the electric contact is closed, the electric contact activating the generator and consequently the monitoring system.