Abstract: A valve position sensor is described. The valve position sensor includes a sensor housing for placement on a moving component of a valve. A print circuit board assembly is disposed within the housing. The print circuit board assembly includes one or more micro sensors that includes a magnetometer and a gyroscope. A processing unit performs a calibration routine that associates magnetometer data received from the magnetometer with valve position data received from the gyroscope. The processing unit receives data from the magnetometer and compares the received magnetometer data with the calibration data to determine valve position data relating to an estimate of the valve position. A transmitter wirelessly transmits event data including valve position data to an external receiver.

Abstract: A valve position sensor (1) is described. The valve position sensor comprises a sensor housing (10) for placement on a moving component of a valve (12); a print circuit board assembly disposed within the housing, the print circuit board assembly comprising: one or more micro sensors, the one or more micro sensors including a magnetometer; a processing unit configured to receive data from the magnetometer and compare the received magnetometer data with predetermined calibration data to determine valve position data relating to an estimate of the valve position; and a transmitter for wirelessly transmitting event data including valve position data to an external receiver. The valve position sensor provides a low cost means to remotely determine the position of a valve.