Electromagnetic Radiation Monitor with Weighting Function

Abstract

The invention provides an electromagnetic radiation monitor with a weighting function. The electromagnetic radiation monitor comprises an antenna, a weighting filter, an RMS detector and a master controller, wherein the antenna is used for collecting an electromagnetic radiation signal in a target measuring environment; the weighting filter is electrically connected with the antenna and is used for performing corresponding standard limiting value attenuation on the electromagnetic radiation signal according to a self-stored preset frequency spectrum curve; the RMS detector is electrically connected with the weighting filter and is used for performing conversion treatment on the electromagnetic radiation signal after being attenuated; and the master controller is electrically connected with the RMS detector and is used for performing conversion treatment on a direct current voltage signal acquired after the conversion treatment, thereby acquiring an assessment result. The weighting filter is adopted for realizing the frequency-based assessment for the detected electromagnetic radiation signal. The frequency spectrum curve of the weighting filter is related to the curve of the standard limiting value on the frequency, so that the corresponding standard limiting value attenuation can be performed on the passing electromagnetic radiation signal, the detection result of the electromagnetic radiation is more accurate, no worker participates into the whole process and the detection efficiency of the electromagnetic radiation is increased.

Description

technical field [0001] The invention relates to the field of electromagnetic radiation monitoring, in particular to an electromagnetic radiation monitor with a weighting function. Background technique [0002] In electromagnetic radiation monitoring, it is necessary to evaluate the measured electromagnetic field signal to determine whether the electromagnetic radiation in the current test environment exceeds the standard. In the evaluation standard, the limit value based on frequency is usually a curve, that is to say, the limit value of different frequency bands is different. [0003] Taking "Electromagnetic Environment Control Limits" (GB8702-2014) as an example, the relationship between public exposure electric field control limits and frequency is as follows: figure 1 shown. In the evaluation method of this standard, it is required that when the public is exposed to multiple frequencies of electric, magnetic, and electromagnetic fields, the evaluation of the public’s c...

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Problems solved by technology

[0004] For the above-mentioned method for evaluating the measured electromagnetic field signal, the prior art generally uses a comprehensive field strength meter to monitor electromagnetic radiation, collects the measured electromagnetic field signal through the comprehensive field strength meter, and evaluates the measured electromagnetic field signal (such as a broadband field strength signal) Perform detection processing to obtain the detection result; then manually calculate whether the monitoring value corresponding to the detection result exceeds the standard; and in the process of the above detection processing, the detection voltage depends on the total field strength of the entire broadband field strength signal, and the comprehensive field strength meter cannot obtain The field strength of each frequency point of the broadband signal, and because the standard limit value is different based on the limit value of different frequencies, the comprehensive field strength meter collects the broadband field strength, and it is impossible to know the main radiation frequency or when there are multiple radiation frequencies. For comparison with the limit value, manual over-standard detection is required, and manual over-standard detection usually uses the most stringent limit value of 12V / m in the 30MHz-3000MHz frequency band as the evaluation standard, which is not rigorous

Especially when the measured electromagnetic field signal is composed of multiple frequency electromagnetic radiation sources, it will cause evaluation errors

[0005] The inventor found in the research that because the comprehensive field strength meter in the prior art cannot know the multiple frequency bands of the electromagnetic field signal it collects, it needs to manually detect the exceeding standard of the electromagnetic field signal, so that the detection efficiency is low; and the manual exceeding standard detection is based on The most stringent evaluation standards also make the evaluation results less accurate

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