Field conduction interference signal recorder

Abstract

The invention discloses a field conduction interference signal recorder, which comprises a signal input interface, a signal conditioning module, a data acquisition module, a control module and a signal output interface which are sequentially connected, wherein the control module comprises a field programmable gate array (FPGA) module, an advanced reduced instruction set computer machine (ARM) processor and a storage module for performing data exchange between the FPGA module and the ARM processor; the FPGA module is connected with the data acquisition module and transmits a signal to the ARM processor; and the ARM module outputs the processed signal to the signal output interface. The field conduction interference signal recorder can test electromagnetic interference on a power line and a signal line or other cables, has high-speed data acquisition processing capacity and can acquire waveform data of an electromagnetic interference signal of higher than 1kHz to 10MHz. The equipment is intrinsic safety equipment, and the device is small in size, low in heating capacity, high in waterproof grade and convenient to carry and does not have a fan.

Description

technical field [0001] The invention relates to a signal analysis device, in particular to a signal analysis device for analyzing and recording field interference signals. Background technique [0002] In the prior art, research on interference signals usually uses a professional interference receiver coupled with a coupling network to test and record the interference signals in a standard laboratory environment. In this test environment, only stable and periodic interference signals can be obtained, but the site conditions vary widely. In the current living and industrial environments, there are many electrical equipment, various switching power supplies, frequency conversion air conditioners, induction cookers, radio applications and other equipment. The interference is serious. If the interference in the actual application environment of the equipment can be monitored and recorded, the collected and recorded data can be brought back to the laboratory for analysis, and th...

AI Technical Summary

Problems solved by technology

In this test environment, only stable and periodic interference signals can be obtained, but the site conditions vary widely. In the current living and industrial environments, there are many electrical equipment, various switching power supplies, frequency conversion air conditioners, induction cookers, radio applications and other equipment. The interference is serious. If the interference in the actual application environment of the equipment can be monitored and recorded, the collected and recorded data can be brought back to the laboratory for analysis, and the characteristics and laws of interference sources in various usage environments can be found. Taking specific measures can strengthen the reliability and stability of the equipment in daily work. In addition, mastering the strength, frequency spectrum, and interference time of on-site electromagnetic interference signals is also of great reference value for product and equipment design and application.

Therefore, the test environment is very harsh, and the test conditions are very strict. There are requirements for the volume, electrical performance, and working duration of the test instrument. The existing test instruments cannot meet all the above requirements.

[0003] In the prior art interference signal measurement, some large-scale equipment is used to analyze all signals on site to determine which are interference signals and which are normal signals. The final result is often to shield the remaining signals after analyzing the normal signals to achieve The accuracy of the received signal does not improve how to generate and adapt to the interference signal, and this kind of measurement equipment is huge and time-consuming, which is not conducive to on-site carrying

For example, the patent with the publication number CN101558571A and the invention name "Interference Signal Detection and Suppression for Wireless Communication" discloses a device that installs processors, modulators, memories, transmitters and receivers at the same time on the transmitter and receiver , analyze the signals of both parties, and eliminate the interference signal according to the comparison between the signal of the sender and the signal of the receiver. This solution is not suitable for mobile measurement, nor can it reflect the interference situation of the equipment in actual use

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