Intelligent identification and evidence recovery method of cheating signals in examination room

Abstract

The invention discloses an examination room cheating signal intelligent identification and evidence collecting and restoring method. The method comprises the following steps of examination room signal obtaining, signal modulation and identification, signal demodulation and restoring, content identification and cheating signal feedback, wherein in the step of content identification, voice activity detection is carried out on signals processed through demodulation, then identification of key words related to cheating is carried out on the signals, the signals are added into a blacklist and fed back if cheating key words related to the cheating exist, if no cheating key words related to the cheating exists, whether cheating signals exist or not is judged manually, and the signals are added into a blacklist and fed back if it is judged manually that the cheating signals exist, and otherwise identification is ended. The process is repeated. According to the examination room cheating signal intelligent identification and evidence collecting and restoring method, various suspected cheating signals collected in the detection process can be identified and analyzed effectively and automatically, demodulation and restoring are carried out on common cheating signals, intelligent identification on the cheating content is completed, a user does not need to carry out manual monitoring and distinguishing on a great number of cheating audios and digital content one by one, working efficiency of blocking the cheating signals is improved greatly, identification results are fed back in real time, and cheating signal detection based on the content is achieved.

Description

technical field [0001] The invention relates to a method for processing a cheating signal in an examination room, in particular to a method for intelligent identification and evidence collection and restoration of a cheating signal in an examination room. Background technique [0002] The high-tech cheating signal blocking system is the equipment needed to protect the electromagnetic environment of the examination room and ensure the fairness of the examination. In addition to the blocking of wireless cheating signals in the examination room, all kinds of blocking systems also need to carry out evidence collection and restoration of suspected cheating signals, so as to provide support for the evaluation of system operation efficiency and the investigation and analysis of cheating behavior. To this end, the following issues need to be addressed: [0003] 1. Modulation identification of suspected cheating signals, type identification and intelligent identification of cheating...

AI Technical Summary

Problems solved by technology

[0009] In the examination, the detection process is separated from the forensic restoration process. During the detection process, the information obtained by forensic restoration cannot be used, and content-based detection cannot be realized. The degree of intelligence is not enough, and a large amount of manual monitoring and identification work is required, resulting in low efficiency. The pertinence and accuracy of detection needs to be improved

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