The Research And Implementation For Dual-channel Casing Vibration Monitoring Instrument

With the continuous development of science and technology, the rotating machinery, get more tremendous automation and intelligent. Especially with the development of computer technology, more and more complex machinery and equipment were produced, meanwhile, it produces more and more failures, a variety of large-scale machinery vibration monitoring get more attention, it has become important means to ensure the safe and stable operation of production systems and improve product quality, and can be found early and effective treatment failure. Chassis vibration monitoring instrument is used in real-time monitoring of the increased absolute vibration of rotating machinery owing to rotor imbalance, misalignment, mechanical looseness, bearing damage, gear damage, vibration monitoring of large-scale machinery and equipment play a great important role in protecting the reliability of machinery and equipment and protecting human lives and reducing economic losses. For example, the steam turbine generator, compressors, pumps, gearboxes, blowers and other mechanical equipment.Through the understanding of the research status of rotating machinery vibration-line monitoring system at home and abroad,on the basis of comprehensive analysis of the common types and causes of rotating machinery failures.Rotating machinery vibration-line monitoring system designed mainly divided into two parts, namely the hardware circuit section and software section.The hardware includes a vibration sensor signal filtering, amplification, integration, Isolation, pretreatment of analog circuits, control and alarm relay output circuit, real-time display circuit, communications and high-speed communication bus monitor circuit, the vibration data storage circuit and CPU control circuit.Software includes Modbus protocol analysis program module, CAN bus communication speed control module, data storage management section, real-time display vibration module, signal calibration program modules and significant vibration algorithm moduleAfter this design, dual-channel monitor casing vibration monitoring instrument capable of simultaneously measuring the vibration signals of the two channels, including the X-direction vibration and the Y-direction vibration, Maintenance personnel can more accurately detect location of mechanical failure.further strengthen the study of rotating machinery vibration protection, ultimately we can design a high quality, high reliability products, make a contribution to the protection of our industry, a large rotating machinery devices are installed by using domestic equipment in the future, saving more money for our country.