数据采集系统波形亮度调节与校正技术研究

Research on the Digital Waveform Intensity Adjustment and Correction Technology of Data Acquisition System

在数据采集系统中，大量地采用了并行技术来提高波形捕获率，并利用信号信息的三个维度，即幅度、时间以及幅度在时间上的分布，将短时间内累计的多幅波形映射成一个具有亮度或颜色等级显示画面。在此过程中，波形亮度调节与校正技术在保证波形显示亮度基本不随实际捕获的波形幅数变化的前提下，通过亮度或颜色等级尽可能的表现被测波形的细节。通过深入分析三维波形映射过程，建立了波形亮度调节与校正技术的数学模型，并结合工程应用，在数字三维示波器上实现了提出的数字波形映射方案，在保证亮度等级基本不变的条件下，可显示波形细节更多。

In the data acquisition system, parallel technology is used frequently to improve the waveform capture rate, and makes use of the three dimensions of signal： amplitude, time and the amplitude distribution in time and the waveforms acquired in short time will be mapped into a picture with wave intensity or color grade. In this process, the waveform intensity adjustment and correction technology ensures that waveform display intensity hardly changes with the number of waveforms captured, and shows as much as possible the details of the waveform captured. The waveform intensity mapping process is analyzed, on this basis, the mathematical model of the waveform intensity adjustment and correction technology is described. With engineering applications, its function is designed in the digital three-dimensional oscilloscope, the waveform intensity is not changed basically and the more details of the waveform is showed.