Radio sensor for measuring e.g. frequency parameter of motor for monitoring of bearing failures, has energy converter for converting ambient energy into electrical power, and radio module sending data to processing device

摘要

The sensor (1) has an energy converter (4) e.g. piezo element and thermocouple, for converting an ambient energy (5) into electrical power, where an oscillation energy of an swinging object (2), a magnetic rotary field, an air flow or a temperature difference is utilized as the ambient energy. An acceleration adapter (6) is provided for vibration measurement of the swinging object. A radio module (3) comprises a unique address, and an energy storage unit (7) is provided in the sensor. The radio module sends data to a processing device (8).