A long data compression processing method suitable for small drawing interface

A processing method and technology of long data, applied in electrical components, code conversion and other directions, can solve the problems that the screen cannot display 1024 points of data completely, the display area is small, the resolution is low, etc., and the compression processing method is simple and reliable, and the algorithm is realized. Simple, simple and clear effect

Inactive Publication Date: 2011-11-30
KUNMING UNIV OF SCI & TECH
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the display area of ​​portable data collectors is generally small, the resolution is very low, and the measured data waveform contains a large amount of data, resulting in the data points to be displayed greatly exceeding the number of pixels available on the screen.
For example, data acquisition usually acquires 1024 points of data each time, but the resolution of a general small LCD screen is only 320×240, so the 1024 points of data cannot be completely displayed on the screen, so it is necessary to compress the display data in order to Pixels show the overall characteristics of the data, which facilitates fault diagnosis

Method used

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  • A long data compression processing method suitable for small drawing interface
  • A long data compression processing method suitable for small drawing interface
  • A long data compression processing method suitable for small drawing interface

Examples

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Effect test

Embodiment 1

[0019] Example 1: see figure 1 , in a portable data acquisition system, the number of sampling points for collecting data is 1024, and it needs to be drawn in a display screen area with a resolution of 200×150. figure 1 , the example waveform is a sinusoidal signal , signal frequency ,Sampling frequency .

[0020] Since the number of horizontal pixels in the display area is 150, it is obviously impossible to fully display 1024 data points. It is necessary to process the sampled long data signal through this method, so as to compress the drawing in the small drawing interface and reflect the overall characteristics of the data.

[0021] The steps of this long data compression processing method are:

[0022] (1) Divide 1024 data segments into 150 segments, each segment contains 6~7 data points, and each data segment corresponds to a column of pixel points;

[0023] (2) Take the maximum value and minimum value from each data segment as the feature quantity of the data s...

Embodiment 2

[0025] Example 2: see figure 1 , in a portable data acquisition system, the number of sampling points for collecting data is 2048, and it needs to be drawn in the display screen area with a resolution of 320×200.

[0026] The steps of this long data compression processing method are the same as those in Embodiment 1. Divide 2048 data segments into 200 segments, each segment contains 10~11 data points, and each data segment corresponds to a column of pixel points. Draw the characteristic data of the corresponding segment on each column of pixels, and connect them to show the overall characteristics of the long data.

Embodiment 3

[0027] Example 3: see figure 1 , in a portable data acquisition system, the number of sampling points for collecting data is 4096, and it needs to be drawn in the display screen area with a resolution of 320×240.

[0028] The steps of this long data compression processing method are the same as those in Embodiment 1. Divide 4096 data segments into 240 segments, each segment contains 17~18 data points, and each data segment corresponds to a column of pixel points. Draw the characteristic data of the corresponding segment on each column of pixels, and connect them to show the overall characteristics of the long data.

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Abstract

The invention provides a processing method for drawing longer data on a low-resolution screen, and belongs to the technical field of data collection. Extract the maximum and minimum feature quantities of the data in sections from a large amount of data, and then draw only these feature quantities on the small screen, so as to achieve the purpose of showing the overall characteristics of the data. The curve displayed after compression by this method can well represent the waveform characteristics of the original data. The principle is simple and clear, and the algorithm is simple and efficient. It is especially suitable for long data representation in embedded state monitoring systems.

Description

technical field [0001] The invention relates to a processing method for drawing longer data on a small screen, and belongs to the technical field of data collection. technical background [0002] With the development of computer technology, the role played by the data acquisition system in the equipment inspection system is particularly prominent. The generation of embedded portable data acquisition system further expands the function of the data acquisition system. Compared with the traditional data acquisition system, the current portable data acquisition system can not only collect data, display simple frequency spectrum and save the data, but also prompt alarm, display shaft center trajectory, dynamic balance and diagnose bearing faults, etc. [0003] By directly observing the waveform data of the monitored quantity, it can provide a basic basis for judging the operating status of the equipment. Therefore, displaying the collected waveform data is one of the basic func...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03M7/30
Inventor 毛剑琳伍星柳小勤刘畅迟毅林潘楠
Owner KUNMING UNIV OF SCI & TECH
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