Unlock instant, AI-driven research and patent intelligence for your innovation.

A data acquisition device based on information entropy

A technology of data collection and information entropy, applied in the direction of digital variable display, etc., can solve the problems of complex calculation and time-consuming

Active Publication Date: 2021-06-04
UNIV OF ELECTRONICS SCI & TECH OF CHINA
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the deficiencies of the prior art, and propose a data acquisition device based on information entropy, which can solve the problem of complex and time-consuming calculation while reducing the pressure of data transmission and storage in the time domain measurement system, and realize the signal waveform real-time collection and processing of

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A data acquisition device based on information entropy
  • A data acquisition device based on information entropy
  • A data acquisition device based on information entropy

Examples

Experimental program
Comparison scheme
Effect test

example

[0051] One of the typical applications of the present invention is to observe sporadic glitches in slowly changing signals, which are described in detail below.

[0052] In this example, a digital oscilloscope with a real-time sampling rate of 5GSa / s is used to observe the occasional glitch in a slowly changing signal. The pulse width of the glitch is 1ns, then as Figure 5 As shown, the glitch is sampled to 5 points, while the rest of the waveform is sampled evenly at the same sampling rate. Set the horizontal time base scale to 50ms / div, and the scale in the horizontal direction has 10 divisions, then the displayed waveform length is 500ms. At the current sampling rate, the storage depth L required to save these sampled data is 2.5Gpts, which brings a huge burden on data transmission, storage and processing. In fact, the storage depth of common digital oscilloscopes is actually much smaller than this value.

[0053] Under the limited storage depth, in order to capture the ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a data acquisition device based on information entropy, which uses a peak detector to evenly divide an ADC output sequence into subsequences of length k, detects the maximum and minimum values ​​of each subsequence, and then performs differential processing in a differentiator Get the differential value corresponding to each subsequence, and then compare it with the set threshold r in the comparator. If the comparison result is greater than , then select the maximum and minimum sequence for storage, and mark it as 1. Therefore, the present invention greatly compresses the number of collection points on the premise of retaining valuable waveform information, and reduces the pressure of data transmission and storage. At the same time, the present invention can realize the compression of waveform data through relatively simple logic, solve the problem of complex and time-consuming calculation, and realize real-time acquisition and processing of signal waveforms.

Description

technical field [0001] The invention belongs to the technical field of data acquisition, and more specifically relates to a data acquisition device based on information entropy. Background technique [0002] With the rapid development of electronic technology, modern electronic signals present the characteristics of high bandwidth, transient and non-stationary. How to extract and analyze the rich information carried in such signals is an important task of modern signal measurement technology. [0003] Time-domain measurement technology based on real-time sampling and processing is the mainstream of modern signal measurement technology. Its basic structure is as follows: figure 1 shown. In this system, the analog-to-digital conversion circuit (ADC) is its key component. The higher the sampling rate, the higher the bandwidth of the analog signal that can be collected, and the stronger the signal reconstruction ability of the system; The higher the value, the higher the accur...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01R13/02
CPCG01R13/02
Inventor 张沁川王端阳蒋俊潘卉青杨扩军
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA