CN211928036U

CN211928036U - Detection system for electromagnetic radiation of display

Info

Publication number: CN211928036U
Application number: CN202020291980.6U
Authority: CN
Inventors: 潘霄杰; 郝帅印
Original assignee: Dekai Certification Service Suzhou Co ltd
Current assignee: Dekai Certification Service Suzhou Co ltd
Priority date: 2020-03-11
Filing date: 2020-03-11
Publication date: 2020-11-13
Anticipated expiration: 2030-03-11

Abstract

The utility model discloses a detecting system for display electromagnetic radiation, place the platform including setting up test support and sample in the test place, the test support is used for fixed magnetic field meter or electric field meter, the platform is placed to the sample and is used for placing the sample that awaits measuring, just the platform is placed to the sample can drive thereby the sample that awaits measuring is rotatory to be made the outer peripheral face of sample that awaits measuring can respectively with magnetic field meter or electric field meter are relative, magnetic field meter or electric field meter is used for measuring the sample that awaits measuring is magnetic field intensity or electric field strength under 5Hz ~ 400kHz frequency. The detection system is simple in structure and convenient to use, electromagnetic radiation brought by the display screen is detected by the detection system, detection efficiency is improved, and accuracy of a test result is ensured.

Description

Detection system for electromagnetic radiation of display

Technical Field

The utility model relates to a detecting system especially relates to a detecting system for display electromagnetic radiation.

Background

The display screen is a display tool for displaying a certain electronic file on the screen through a specific transmission device and reflecting the electronic file to human eyes. In a broad sense, a large screen, a television, a fluorescent screen spliced by BSV liquid crystal, a mobile phone, a display screen of quick translation and the like which are visible everywhere in the street are all considered as the scope of the display. The application of the method is very wide, the method can be used for satellite monitoring, and the method can be used for VCD monitoring, so that the method can be used in modern society and has no body shadow. Everyone has the feeling that when looking at an object for a long time, the eyes feel fatigued, and also when facing a display, because it generates images through a series of circuit designs, it must generate radiation, and the harm to the eyes is very large. Because of the use of a large number of display screens, the influence of the electromagnetic disturbance brought out by the display screens on human bodies is more and more obvious, and the research on detecting the electromagnetic disturbance of the display screens is more and more emphasized.

Disclosure of Invention

The utility model aims at providing a detecting system for display electromagnetic radiation, this detecting system simple structure, convenient to use through using this detecting system to detect the electromagnetic radiation that the display screen brought, promotes detection efficiency, ensures the accuracy of test result.

In order to achieve the above purpose, the utility model adopts the technical scheme that: the utility model provides a detecting system for display electromagnetic radiation, places the platform including setting up the test support and the sample in the test place, the test support is used for fixed magnetic field meter or electric field meter, the sample is placed the platform and is used for placing the sample that awaits measuring, just the sample is placed the platform and can be driven the sample that awaits measuring is rotatory thereby makes the outer peripheral face of the sample that awaits measuring can respectively with magnetic field meter or electric field meter are relative, magnetic field meter or electric field meter is used for measuring the magnetic field intensity or the electric field intensity of the sample that awaits measuring under 5Hz ~ 400kHz frequency.

In the above technical scheme, the sample placing table comprises a scale table and a rotating table arranged above the scale table, and the rotating table can rotate relative to the scale table.

In the technical scheme, 16 scale marks are divided at equal intervals by taking the circle center of the scale table as a vertex, and the included angle between every two adjacent scale marks is 22.5 degrees.

In the above technical scheme, the projection of the periphery of revolving stage falls in the scale platform, be provided with rotatory mark on the periphery of revolving stage, rotatory mark with the scale mark is relative, is used for the record the rotatory angle of revolving stage.

In the above technical scheme, the test support includes the fixing base, with the extensible member that the fixing base links to each other, the extensible member is used for adjusting the height of fixing base in the vertical direction.

In the above technical solution, the magnetic field meter and the electric field meter are of Comb inova brand, and the models thereof are respectively: MFM2000 and EFM 100.

In the technical scheme, the test site is a shielding room or an anechoic chamber.

Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:

1. the utility model discloses a detect the magnetic field intensity and the electric field intensity of sample that awaits measuring under 5Hz ~ 400kHz frequency to supply among the prior art to the detection disappearance of this frequency channel, be convenient for study this frequency channel within range electromagnetic radiation to the harm that the human body produced.

2. The special magnetic field meter and the special electric field meter within the frequency range of 5 Hz-400 kHz are used for testing, so that interference is avoided, and the accuracy and the stability of a test result are ensured.

3. The sample placing table comprises a scale table and a rotating table arranged above the scale table, scale marks are arranged on the surface of the scale table at equal intervals by taking the circle center as a vertex, when the sample to be tested is placed on the rotating table, the rotating table rotates according to the scale marks, so that the sample to be tested rotates according to a specified angle, the whole and comprehensive detection of the sample to be tested is realized, the comprehensive and complete test result is ensured, and the working efficiency is improved.

4. The test site is arranged in a shielding room or a anechoic room or other spaces with the environmental background noise meeting the requirements, so that the interference of environmental factors is reduced, and the accuracy of the test result is ensured.

Drawings

FIG. 1 is a schematic view of a detection system of the present invention;

wherein: 1. testing the field; 2. testing the bracket; 3. a sample placement stage; 4. a scale table; 5. a rotating table; 6. scale lines; 7. rotating the mark; 8. a fixed seat; 9. a telescoping member.

Detailed Description

The invention will be further described with reference to the following drawings and examples:

the first embodiment is as follows: referring to fig. 1, a detection system for electromagnetic radiation of a display includes a test support 2 and a sample placing table 3, which are disposed in a test field 1, where the test support 2 is used to fix a magnetic field meter or an electric field meter, the sample placing table 3 is used to place a sample to be tested, and the sample placing table 3 can drive the sample to be tested to rotate so that the outer peripheral surface of the sample to be tested can be opposite to the magnetic field meter or the electric field meter, respectively, and the magnetic field meter or the electric field meter is used to measure the magnetic field strength or the electric field strength of the sample to be tested at a frequency of 5Hz to 400 kHz. The special magnetic field meter and the electric field meter within the frequency range of 5 Hz-400 kHz are used for testing the magnetic field intensity and the electric field intensity of a sample to be tested within the frequency range of 5 Hz-400 kHz, the detection loss of the frequency band in the prior art is supplemented, and the harm of electromagnetic radiation within the frequency band range to a human body is conveniently researched.

In order to improve the efficiency of the test, the sample placing stage 3 includes a scale table 4 and a rotary table 5 disposed above the scale table 4, and the rotary table 5 is rotatable relative to the scale table 4. Specifically, 16 scale marks 6 are divided at equal intervals by taking the circle center of the scale table 4 as a vertex, and the included angle between every two adjacent scale marks 6 is 22.5 degrees. The projection of the periphery of the rotating platform 5 falls in the scale platform 4, a rotating mark 7 is arranged on the periphery of the rotating platform 5, and the rotating mark 7 is opposite to the scale lines 6 and used for recording the rotating angle of the rotating platform 5.

Referring to fig. 1, the test rack 2 includes a fixing base 8, and an extensible member 9 connected to the fixing base 8, where the extensible member 9 is used to adjust the height of the fixing base 8 in the vertical direction.

The magnetic field meter and the electric field meter are made of Comb inova brands, and the models are respectively as follows: MFM2000 and EFM 100.

In order to avoid the interference of environmental factors, the test site 1 is a shielding room or an anechoic chamber, or a space with an environmental background noise meeting requirements, and the specific requirements of the environmental background noise are as follows: the electric field intensity environment requires 5 Hz-2 KHz to be less than 2V/m; 2 KHz-400 KHz is less than 0.2V/m; the magnetic field intensity environment requires that 5 Hz-2 KHz is less than 40 nT; 2 KHz-400 KHz is less than 5 nT.

The specific test process is as follows:

(1) measuring the environmental noise floor of the test site 1, determining whether the test requirement is met, and if the test requirement is not met, placing the device in a shielding room or a dark radio room for testing;

(2) placing a sample to be detected on a rotating table 5, and aligning a rotating mark 7 to the 0 scale of a scale mark 6;

(3) mounting an electric field meter on the test bracket 2, and enabling the electric field meter and a sample to be tested to be positioned on the same horizontal line;

(4) measuring data and recording the data to a corresponding table;

(5) rotating the rotating table 5 to rotate the rotating marks 7 to each scale in sequence for testing;

(6) lowering the telescopic piece 9 of the test support 2 by 30cm, repeating the test under each scale, and recording data;

(7) lifting the telescopic piece 9 of the test support 2 by 30cm, repeating the test under each scale, and recording data;

(8) and (5) testing the data by using the magnetic field meter according to the steps.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. A detection system for display electromagnetic radiation, characterized by: the test support is used for fixing a magnetic field meter or an electric field meter, the sample placing table is used for placing a sample to be tested, the sample placing table can drive the sample to be tested to rotate, so that the outer peripheral face of the sample to be tested can be opposite to the magnetic field meter or the electric field meter respectively, and the magnetic field meter or the electric field meter is used for measuring the magnetic field intensity or the electric field intensity of the sample to be tested under the frequency of 5 Hz-400 kHz.

2. The detection system for display electromagnetic radiation according to claim 1, wherein: the sample placing table comprises a scale table and a rotating table arranged above the scale table, and the rotating table can rotate relative to the scale table.

3. The detection system for display electromagnetic radiation according to claim 2, characterized in that: 16 scale marks are divided at equal intervals by taking the circle center of the scale table as the vertex, and the included angle between every two adjacent scale marks is 22.5 degrees.

4. The detection system for display electromagnetic radiation according to claim 3, characterized in that: the projection of the periphery of the rotating table is located in the scale table, rotary marks are arranged on the periphery of the rotating table, and the rotary marks are opposite to the scale lines and used for recording the rotating angle of the rotating table.

5. The detection system for display electromagnetic radiation according to claim 1, wherein: the test support comprises a fixed seat and an extensible part connected with the fixed seat, and the extensible part is used for adjusting the height of the fixed seat in the vertical direction.

6. The detection system for display electromagnetic radiation according to claim 1, wherein: the magnetic field meter and the electric field meter adopt Combinova brands, and the models are respectively as follows: MFM2000 and EFM 100.

7. The detection system for display electromagnetic radiation according to claim 1, wherein: the test site is a shielding room or an anechoic chamber.