Digital signal processor (DSP)-based rotating machine vibration detection and protection system

Abstract

The invention relates to a digital signal processor (DSP)-based rotating machine vibration detection and protection system. The system mainly comprises a power module, a sensor power supply module, a sensor signal acquiring and conditioning module and a microprocessor microprogrammed control unit (MCU) module, wherein a DSP module is arranged between the sensor signal acquiring and conditioning module and the microprocessor MCU module and is used for processing a sampled signal; the microprocessor MCU module is used for determining a corresponding numerical value signal processing algorithm of the DSP module according to conditions of different sensors, control modes and the like; and the DSP module is used for transmitting processed data to the microprocessor MCU module through a host port interface (HPI). In the system, a DSP is used as a vibration signal operation central processing unit (CPU), so that vibration signals can be acquired at a high speed; and the DSP has high signal processing capability, so that calculation accuracy is improved, a state monitoring and protecting function can be quickly finished, and the operation load of an upper computer is reduced.

Description

technical field [0001] The invention relates to a measuring instrument for measuring vibration, in particular to a DSP-based rotating machinery vibration detection and protection system. Background technique [0002] With the increasing capacity of generator sets in the power industry and the increasing volume and capacity of various rotating machinery, in order to prevent accidents and prevent accidents before they happen, the application of rotating machinery vibration detection and protection systems will become more and more extensive. [0003] In the condition monitoring and fault diagnosis of rotating machinery, the vibration signal can reflect the operating state of the rotating machinery equipment most quickly and directly, and more than 70% of the operating faults are manifested in the form of vibration. Since the energy distribution of the vibration signal at the power frequency (or fundamental frequency) and its multiples directly reflects the operating state of t...

AI Technical Summary

Problems solved by technology

[0004] Most existing rotating machinery vibration detection and protection systems generally use single-chip microcomputers for data acquisition and processing. However, due to the limited computing power of single-chip microcomputers, they can only solve the problem of fast sampling, and are helpless for high-speed and large-scale signal processing.

Therefore, the condition monitoring function can only be completed by computer, which increases the complexity and cost of the system

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