A motor monitoring system
A motor monitoring and unification technology, applied in the direction of motor generator testing, measuring electricity, measuring devices, etc., can solve the problems of inability to monitor, and achieve the effect of making up for the inability to effectively detect electrical faults of motors
Active Publication Date: 2022-07-08
深圳前海慧联科技发展有限公司
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Problems solved by technology
Motor faults are usually divided into mechanical faults and electrical faults. By monitoring the vibration method, only the mechanical faults of the motor can be monitored, accounting for about 53% of all motor faults, and up to 47% of the faults are electrical faults, which cannot be detected by vibration. effective monitoring
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[0050] The terms "first", "second" and the like in the description embodiments and claims of the present invention and the drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. Furthermore, the terms "comprising" and "having", and any variations thereof, are intended to cover non-exclusive inclusion, eg, comprising a series of steps or elements. A method, system, product or device is not necessarily limited to those steps or units expressly listed, but may include other steps or units not expressly listed or inherent to the process, method, product or device.
[0051] The invention discloses a motor monitoring method and device. The real-time signal data of the motor under two working conditions of shutdown and running are obtained through a magnetic flux acquisition sensor installed on the surface of the motor casing, and the magnetic flux signal is collected by a data acquisition unit and collected. Make corr...
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It relates to a motor monitoring system, comprising a sensor unit for collecting the magnetic flux on the surface of the motor under two states of running and stopping, and requiring at least collecting the magnetic flux data of one measuring point of the motor; a data collection unit for collecting and processing The data of the sensor unit and the characteristic value of the motor are calculated. The data acquisition unit includes a data acquisition module, an analog low-pass filter module, an analog-to-digital conversion module, a signal processing and algorithm module, a data transmission module and a power consumption management module; online monitoring unit , used to receive the characteristic value transmitted by the data acquisition unit, calculate the deviation value of the magnetic flux data, and issue an alarm message when the deviation value is greater than the preset threshold. The online monitoring unit includes a data analysis and processing module, a data storage module, and an alarm processing module. and data display module. The invention realizes the monitoring of the motor by monitoring the change of the magnetic flux of the motor casing, and makes up for the defect that the electrical fault of the motor cannot be effectively detected.
Description
technical field [0001] The invention relates to the field of online state monitoring of rotating machinery, in particular to a motor monitoring system. Background technique [0002] Motors are widely used in the industrial industry and are used in all walks of life, especially in the industrial field. They are indispensable production equipment. The structure is more and more complex, and its maintenance is more and more difficult. [0003] For a long time, for various operating faults of the motor, mature and reliable relay protection measures have been adopted, such as overvoltage protection, overcurrent protection, undervoltage protection, differential protection, reverse current protection, grounding protection and so on. These protective measures are only actions taken after the accident and cannot prevent the occurrence of the accident. When these protective measures are taken, economic losses may still be caused. [0004] At present, most of the preventive measures ...
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IPC IPC(8): G01R31/34
CPCG01R31/343
Inventor 马少立李桂民
Owner 深圳前海慧联科技发展有限公司