During examination periods, it is crucial to closely monitor the examination venues and their surrounding environments. Monitoring stations and surveillance vehicles will be fully operational, conducting comprehensive monitoring of specific radio frequency bands. In the event of any abnormal signals, immediate signal interference measures will be taken to block the signals. Additionally, technicians can use direction finders to determine the source of signals and assist relevant authorities in apprehending cheaters. Despite concerns from some parents, it is important to note that these devices do not pose any harm to the health of students or examination staff. This article aims to address these concerns and provide an understanding of the safety measures implemented during examinations.
Monitoring and Signal Interference Measures:
To ensure the integrity of examinations, monitoring stations and surveillance vehicles will be strategically placed to closely monitor examination venues and their surroundings. These stations will conduct comprehensive monitoring of specific radio frequency bands. If any abnormal signals are detected, immediate signal interference measures will be implemented to block the signals. Technicians equipped with direction finders can accurately determine the direction of the signals, aiding in the identification and capture of individuals attempting to cheat.
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Safety of Students and Examination Staff:
Despite concerns from some parents, it is important to emphasize that these monitoring and signal interference devices do not pose any harm to the health of students or examination staff. The mobile signal interference devices used during examinations are designed to operate silently, ensuring they do not disrupt the normal performance of students during their exams. The potential harm caused by any electromagnetic wave-emitting device depends on the specific absorption rate (SAR) of the human body towards electromagnetic waves. The International Commission on Non-Ionizing Radiation Protection (ICNIRP) has set the SAR safety standard for radiofrequency radiation at a maximum of 2.0, while China’s standard is set at 1.5. Currently, wireless communication base stations typically emit power ranging from 40W to 50W. At a distance of 20 to 30 meters from the base station, the specific absorption rate of the human body towards electromagnetic waves is already below 1.0. In comparison, the mobile signal interference devices used in examination venues are low-power devices with emission power generally below 3W. In such cases, the specific absorption rate of the human body towards electromagnetic waves is negligible. Therefore, the use of mobile signal interference devices in examination venues does not pose any harm to human health.
The monitoring and signal interference measures implemented during examinations are essential to maintain the integrity of the examination process. These measures ensure that abnormal signals are detected and promptly blocked, preventing cheating attempts. It is important for parents to understand that these devices do not pose any harm to the health of students or examination staff. The low emission power of the mobile signal interference devices used in examination venues ensures that they operate silently and do not disrupt the normal performance of students during their exams. With these measures in place, students can confidently focus on their examinations, knowing that the examination environment is closely monitored and protected.