| 摘要 |
<p>An ac machine monitor, particularly applicable to ac induction motors, provides information for ascertaining the health and condition of the motor. The monitor is self-contained, having its own internal power source, electronics, and sensor suite, and attaches directly to the outer frame of the motor. Sensors disposed within the monitor include a motor frame temperature sensor, flux sensor, vibration sensor, and clock. An ambient temperature sensor enables determination of motor frame temperature relative to ambient. Sensor outputs are processed and analyzed by monitor electronics to determine various life history parameters, including motor speed and load, which are stored in electronic memory. A communications port enables a peripheral device, such as a notebook computer or portable data collector, to communicate with the monitor and download the life history parameters stored in memory. Downloaded data can be further analyzed and statistically compared to trend data at a base computer to ascertain the health and condition of the motor. The monitor electronics are configured to consume very little power so that the internal power source will continue to power the monitor for several years.</p> |
