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Frequency-selective electromagnetic radiation monitor

A technology of electromagnetic radiation and monitoring instrument, which is applied in the fields of electromagnetic field characteristics, instruments, measuring devices, etc., can solve the problems of excessive radiation source and the inability to judge the level of radiation source intuitively, and achieve the effect of accurate measurement

Inactive Publication Date: 2016-07-20
BEIJING SENFU SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a frequency-selective electromagnetic radiation monitor to solve the technical problem that the electromagnetic radiation monitoring equipment in the prior art cannot intuitively determine the level of each radiation source and whether each radiation source exceeds the standard

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] Take a certain type of frequency-selective electromagnetic radiation monitor as an example. The frequency range of antenna 1 of this type of frequency-selective electromagnetic radiation monitor is 27MHz-3GHz.

[0075] Use the spectrum analysis mode to scan the spectrum in the 27M-3GHz wide frequency range to get the spectrum diagram.

[0076] The electromagnetic radiation values ​​at several peaks in the spectrum graph are relatively large, and further analysis is performed on several frequency bands with large measured values. For example, scanning the TD-LTE frequency band (1.88G-1.92GHz) can obtain the spectrum of this frequency band. TD-LTE's actual working frequency band 20M bandwidth integrates the real-time value of power density, and then the electromagnetic radiation status map of this frequency band can be obtained, as shown in Figure 5 shown.

[0077] Apply the safety evaluation mode to set the frequency upper and lower limits of 9 frequency bands such as ...

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Abstract

The invention provides a frequency-selective electromagnetic radiation monitor. The frequency-selective electromagnetic radiation monitor includes a host machine and an antenna which are connected with each other; the antenna is used for receiving spatial electromagnetic radiation signals; the host machine comprises a preselector, a radio frequency unit, an analog-to-digital converter, a data processing unit and a main control unit which are connected with one another sequentially; the antenna is connected with the preselector; the preselector includes a plurality of radio frequency filters which are in parallel connection; the plurality of radio frequency filters are used for filtering the electromagnetic radiation signals received by the antenna so as to obtain electromagnetic radiation signals of a preset frequency; the radio frequency unit comprises an amplifier and a high-pass filter connected with the amplifier, wherein the amplifier is connected with the radio frequency filters, and the high-pass filter is connected with the analog-to-digital converter. The frequency-selective electromagnetic radiation monitor of the invention can evaluate measured electromagnetic field signals based on frequencies and meet the requirement of the GB8702-2014 ''controlling limits for electromagnetic environment''.

Description

technical field [0001] The invention relates to the field of electromagnetic radiation monitoring, in particular to a frequency-selective electromagnetic radiation monitor. Background technique [0002] Electromagnetic radiation monitoring, on the basis of obtaining the electromagnetic radiation value, usually also needs to identify the source of electromagnetic radiation, know the spectrum of electromagnetic radiation, and determine the contribution of different radiation sources to the total field strength of electromagnetic radiation. The convenience of measuring fast-changing electromagnetic signals (such as radar pulse signals) and measuring electromagnetic radiation is also an important indicator for evaluating electromagnetic radiation monitors. [0003] Existing electromagnetic radiation monitoring instruments, the main instrument is a comprehensive field strength instrument for electromagnetic radiation. [0004] Electromagnetic radiation comprehensive field streng...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R29/08
CPCG01R29/0871
Inventor 陆德坚薛欢张立垚
Owner BEIJING SENFU SCI & TECH CO LTD
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