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Three-dimensional space electromagnetic field distribution measurement system and test method

A three-dimensional space and measurement system technology, applied in the direction of measuring devices, measuring magnetic variables, instruments, etc., can solve problems such as drone disorder, damage, and inability to complete millimeter-level precision tests, achieving flexible structure and improving test efficiency Effect

Pending Publication Date: 2021-09-03
CHINA SHIP DEV & DESIGN CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Domestically, it has been proposed to use UAV-borne space electromagnetic field measurement system. This system consists of UAV platform, field probe and test software components. UAV uses RTK differential positioning system, and the positioning accuracy can reach centimeter level. However, this method uses The power supply of the drone is limited by the battery, and the battery life is mostly 25-30 minutes. In most cases, the measurement cannot be completed at one time, resulting in the test not being able to be carried out continuously. Moreover, when the measurement field strength is large, electromagnetic compatibility problems are prone to occur, causing the drone Disorder or even damage, and at the same time, it is impossible to complete the test of millimeter-level accuracy

Method used

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Embodiment 1

[0042] For the three-dimensional space electromagnetic field far field distribution measurement system structure, such as figure 1 As shown, the electromagnetic wave far field distribution measurement system is as follows figure 2 As shown, in order to realize the far-field measurement in three-dimensional space, the electromagnetic wave test object is the array antenna 4, and the receiving end controls the three-dimensional scanning frame 1 to run along the set trajectory. The trajectory set above receives electromagnetic waves, and the field strength values ​​measured by the spectrum analyzer are stored in the memory of the display and control platform, and the data processor draws the stored data into a field distribution map in real time. The three-dimensional spatial electromagnetic field distribution measurement system in Embodiment 1 mainly includes a test object, a receiving end and a control processing end 3, and the test object includes an array antenna 4 and a powe...

Embodiment 2

[0066] For the three-dimensional space electromagnetic field near-field distribution measurement system, such as Figure 4 As shown, the near-field device under test 6 can be a printed circuit board or an antenna near-field area. When the test object is a printed circuit board, the normal operation of the device will generate an electromagnetic field around it. This method is a method that does not pass through the antenna. Passive electromagnetic radiation, when the amount of electromagnetic radiation is high, will become a source of interference, causing serious electromagnetic interference to other equipment. The electromagnetic field receiving probe is the electric field probe 5, which can usually use a dipole antenna to receive the field strength in the environment, and it needs to be calibrated before use to ensure the accuracy and reliability of its measurement. In near-field scanning, it is generally required that the electric field probe is relatively close to the dev...

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Abstract

The invention discloses a three-dimensional space electromagnetic field distribution measurement system and test method, and belongs to the technical field of electromagnetic field measurement. The three-dimensional space electromagnetic field distribution measurement system comprises a test object, a receiving end and a control processing end; the test object comprises an electromagnetic generation device and a power amplifier; the receiving end comprises an electromagnetic field receiving probe and a three-dimensional scanning frame; the control processing end comprises a frequency spectrograph, a driver, a vector signal source, a data processor and a display control platform; the display control platform downloads the modulation signal to a vector signal source and connects an output signal to an electromagnetic generation device through a power amplifier by means of the vector signal source; the display control platform controls the three-dimensional scanning frame to operate along a preset track through the driver, drives the electromagnetic field receiving probe fixedly connected to a tray of the three-dimensional scanning frame to receive electromagnetic waves generated by the electromagnetic generation device along the set track, and stores a field intensity value measured by the frequency spectrograph into the memory, and then the data processor draws the stored data into a field distribution diagram in real time. The testing efficiency of space field measurement can be improved.

Description

technical field [0001] The invention belongs to the technical field of electromagnetic field measurement, and more specifically relates to a three-dimensional spatial electromagnetic field distribution measurement system and a test method. Background technique [0002] With the development of wireless energy transmission technology, radar technology and electromagnetic compatibility technology, the measurement of the spatial transmission characteristics of electromagnetic waves is becoming more and more important, whether it is to study the distribution of energy transmitted by long-distance high-power microwave transmitting equipment in space, or to detect the periphery of chips The distribution law of the field strength and its measurement accuracy play a key role in the design and theoretical analysis of the system. In the field of microwave wireless energy transfer technology, high-gain antennas, near-field focusing and wave vector control technologies all need to be ver...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R33/10
CPCG01R33/10
Inventor 郭龙颖杨婧娴肖龙
Owner CHINA SHIP DEV & DESIGN CENT