DSO参数测量的一种直观软件设计方法

Intuitionistic software design method for DSO parameter measurement

针对示波器在测量被测参数值后,一般只显示参数的数值而不会同时显示出该参数的其它物理特性这一问题。采用在参数测量的软件中定义指示器这一方法,使DSO在参数测量中不但能够显示所测电信号的测试值,而且也能够同时显示参数的具体物理意义。指示器基于C语言编程实现,利用硬件采集的波形数据点计算出参数测量的基本参数后,根据所测参数的物理定义确定测试点并存入指示器指针,最终显示出波形的参数测试值和代表参数物理意义的指示器直线。实验表明,DSO参数测量的界面能够实现图形化显示,方便测试人员快速查看所需数据。

At present, only numerical values are showed after their corresponding parameters have been measured for DSO, and their corresponding physical characteristics haven＇t shown. In order to solve this problem, the indicators were defined in the parameter measurement software design, which made not only the test values of electric signals could be showed, but also their specific physical means were assigned at the same time. The indicator was programmed with the C language. And the basic parameters could be calculated with the waveform data points acquired by the hardware, then determined the test points and deposited them into indicator pointers according to the physical content of the measured parameters. Finally the DSO would show the waveform parameter values and the indicator line which was on behalf of the physical content of measured parameters. Experimental results show that the interface of DSO parameter measurements is able to realize graphic display. Hence, it would facilitate the testing staff to check the needed data quickly.