Large-scale reaction kettle distributed fault diagnosis method based on sensor network

Abstract

The invention discloses a large-scale reaction kettle distributed fault diagnosis method based on a sensor network. Each sensor node unit mainly comprises a detection module, a communication module and a calculation module. The method comprises the following technical steps that first, a cascade model of a large-scale reaction kettle system is built; second, a distributed fault diagnosis device based on the sensor network is built, and the information interaction relation between sensor nodes is determined; third, optimal diagnosis device parameters are designed, and the performance of the fault diagnosis device is optimized; fourth, a fault evaluation strategy is designed, and fault diagnosis is carried out according to difference signals generated by the diagnosis device. The fault diagnosis method has the advantages that power consumption and cost are low, and a distribution mode is adopted; a high degree of spatial freedom is achieved in the configuration process, maintenance and extension are convenient, the characteristics that large-scale chemical industry production is large in scale and continuous are met, and the problems that in industry application, a traditional centralized fault diagnosis scheme has constraints in layout and wiring and is poor in reliability are ameliorated.

Description

technical field [0001] The invention relates to the technical field of fault diagnosis, in particular to a sensor network-based distributed fault diagnosis method for large-scale reactors. Background technique [0002] Reactor is a common equipment in the chemical production process. It is widely used in petroleum, chemical, pharmaceutical and other processes. In order to improve the reaction efficiency in the continuous production process, multiple reactors connected in series are often used as cascade reactors. Chemical production is characterized by high temperature, high pressure, and complex process flow. Any failure of any reactor in the production process may affect the quality and efficiency of the reaction process, and even lead to safety accidents. Therefore, it is necessary to design a real-time and effective fault detection system to ensure the safe and reliable operation of large-scale reactor systems. [0003] The industrial site has high requirements on the r...

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Problems solved by technology

However, an effective distributed fault diagnosis scheme has not been reported

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