Turbine status data acquisition device based on personal computer 104 (PC104) bus

Abstract

The invention relates to a turbine status data acquisition device based on a personal computer 104 (PC104) bus, comprising a controller, an A / D (Analogue / Digital) conversion module and a power module, wherein the controller is connected with an industrial control host through the PC104 bus; a key phase frequency doubling module for converting a key phase signal acquired from a turbine rotor into a frequency doubling signal with N-time frequency, an A / D conversion control module, an FIFO (First In First Out) storage and a PC104 communication module are arranged in the controller; the input end of the A / D conversion module is connected with a multipath vibration signal acquired from the turbine rotor; the output end of the key phase frequency doubling module is connected with the A / D conversion control module; the A / D conversion control module is used for carrying out full period equiphase sampling on the multipath vibration signal under the triggering of the frequency doubling signal and controlling the A / D conversion module to carry out A / D conversion on a sampled signal; the output end of the A / D conversion control module is connected with the FIFO storage; and the FIFO storage is connected with the PC104 communication module through an FIFO read write control module. The invention has the advantages of small volume, simplified circuit, high integrated level and high reliability.

Description

technical field [0001] The invention relates to a data acquisition device for sampling the vibration signal of a steam turbine rotor so as to obtain the running state of the steam turbine. Background technique [0002] Steam turbine is the core equipment in the electric power industry. Its operating status affects industrial production and people's daily life. Once a failure occurs, it may cause a chain reaction, resulting in people's normal work and life being unable to proceed, resulting in huge economic losses, and even It can also cause serious and catastrophic casualties. In order to improve the stability, reliability, safety, service efficiency and lifespan of steam turbines, avoid major accidents and affect social production, it is necessary to monitor and diagnose the operating status of steam turbines in real time. The first problem to be solved here is how to obtain the operating status data of the steam turbine. At present, there are many devices used for steam ...

AI Technical Summary

Problems solved by technology

At present, there are many devices for steam turbine state data acquisition, but most of the data acquisition devices are realized by discrete digital electronic components, which have the disadvantages of large volume, complex circuit, and low reliability.

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