Abstract: A sensor hub for use in machine condition monitoring comprising a rotation sensor and a wireless communication module each operatively connected to a processing device. The rotation sensor and processing device are configured to receive power from a controller of the monitored machine. One or more additional sensors, which may be associated with the monitored machine or another machine, may also be operatively connected to the processing device. In an embodiment, the additional sensors may comprise any one or more of, or any combination of, an accelerometer, a temperature sensor, an acoustic sensor, an high frequency sensor, an humidity sensor, a barometric pressure sensor, a current sensor or a proximity sensor. The wireless communication module may support an ad hoc wireless communication protocol. Further, the wireless communication module may receive additional sensor data from one or more wireless sensor nodes associated with the monitored machine or another machine.

Abstract: In an embodiment of a rotational sensor, a multi-pole magnet assembly comprises multiple magnets configured to rotate about a rotational axis of the rotational sensor, where the multi-pole magnet assembly is in a first plane perpendicular to the rotational axis. The magnetic sensor is arranged in a second plane also perpendicular to the rotational axis and in proximity to the multi-pole magnet assembly. Each magnet of the multiple magnets has poles aligned parallel to the rotational axis and perpendicular to the first plane of the magnetic sensor. In another embodiment, the magnetic sensor is arranged at a first radius away from the rotational axis, whereas the multiple magnets of the magnet assembly are arranged at a second radius, not equal to the first radius, away from the rotational axis. In yet another embodiment, a rotational sensor comprises a housing and rotatable shaft upon which the magnet assembly is mounted.

Abstract: A sensor hub for use in machine condition monitoring comprising a rotation sensor and a wireless communication module each operatively connected to a processing device. The rotation sensor and processing device are configured to receive power from a controller of the monitored machine. One or more additional sensors, which may be associated with the monitored machine or another machine, may also be operatively connected to the processing device. In an embodiment, the additional sensors may comprise any one or more of, or any combination of, an accelerometer, a temperature sensor, an acoustic sensor, an high frequency sensor, an humidity sensor, a barometric pressure sensor, a current sensor or a proximity sensor. The wireless communication module may support an ad hoc wireless communication protocol. Further, the wireless communication module may receive additional sensor data from one or more wireless sensor nodes associated with the monitored machine or another machine.

Abstract: In an embodiment of a rotational sensor, a multi-pole magnet assembly comprises multiple magnets configured to rotate about a rotational axis of the rotational sensor, where the multi-pole magnet assembly is in a first plane perpendicular to the rotational axis. The magnetic sensor is arranged in a second plane also perpendicular to the rotational axis and in proximity to the multi-pole magnet assembly. Each magnet of the multiple magnets has poles aligned parallel to the rotational axis and perpendicular to the first plane of the magnetic sensor. In another embodiment, the magnetic sensor is arranged at a first radius away from the rotational axis, whereas the multiple magnets of the magnet assembly are arranged at a second radius, not equal to the first radius, away from the rotational axis. In yet another embodiment, a rotational sensor comprises a housing and rotatable shaft upon which the magnet assembly is mounted.