Rapid detection and recognition method for electromagnetic interference in narrow and small spaces

Abstract

The invention provides a rapid detection and recognition method for electromagnetic interference in narrow and small spaces. The rapid detection and recognition method includes S1, selecting data collection sensors; S2, arranging the data collection sensors at different positions in a small space to create a rapid electromagnetic interference detection hardware testing system; S3, creating a rapidelectromagnetic interference detection software system; S4, extracting a judgment result n of the number of electromagnetic interference sources under the conditions; S5, increasing the number of thedata collection sensors applied to tests in the small space; S6, judging whether the judgment result n of the number of the electromagnetic interference sources is changed or not, if not, determiningthat the number of the electromagnetic interference sources in an electronics equipment system is n, acquiring electromagnetic interference mixed signals, continuing to execute the step 7, otherwise,updating the judgment result n of the number of the electromagnetic interference sources, and returning to execute the step S5; S7, subjecting the electromagnetic interference mixed signals to separation and extraction according to a kurtosis-based fixed point algorithm to acquire n independent electromagnetic interference signals. The rapid detection and recognition method has the advantage of achieving electromagnetic interference detection in small spaces.

Description

technical field [0001] The invention relates to the technical field of electromagnetic environment effects, in particular to a method for quickly detecting and identifying electromagnetic interference in a narrow space. Background technique [0002] Electromagnetic compatibility (EMC) refers to the ability of equipment, subsystems, and systems to perform their respective functions together in a common electromagnetic environment. It includes two meanings: (1) The equipment will not be affected by the same electromagnetic environment. (2) It will not cause or suffer impermissible degradation to other equipment (subsystems, systems) in the same electromagnetic environment due to its electromagnetic emission. It is an important technical performance of electronic and electrical equipment or systems. It characterizes the ability of equipment or systems coexisting in the same electromagnetic environment to be compatible with each other. Electromagnetic compatibility testing usual...

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Problems solved by technology

[0004] However, the current electromagnetic interference detection mainly uses the receiving antenna for signal collection, which cannot complete the electromagnetic interference test in a small space

Secondly, the research content is mainly inclined to the detection of electromagnetic interference in the early stage. The signal obtained in the test is a mixed signal of multiple electromagnetic interference sources, and all electromagnetic interference sources cannot be effectively identified only through the spectrum characteristics, that is, there is a lack of data for later identification of electromagnetic interference. Research on Processing Technology

Moreover, the detection of electromagnetic interference is usually carried out in a single channel, lacking a set of automatic control programs to complete multi-channel rapid detection and real-time data processing, the test efficiency is low, especially when the number of electromagnetic interference sources is large, it takes a lot of manpower and time

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