阅读说明：本技术 一种基于8086的数字示波器 (8086-based digital oscilloscope ) 是由 原永钊 谢扬琛 朱效锐 金豫 于 2019-08-27 设计创作，主要内容包括：本发明提出了一种基于8086的数字示波器,包括：示波器显示部分,其将输入信号的波形在电脑屏幕上通过matlab的GUI显示；输入信号可以是信号发生器发出的信号,也可以是外部产生的一个任意电压量；频率测量部分,测量输入信号的频率,并用数码管显示；时测量部分,当输入信号频率变化时,实现实时测频。(The invention provides a 8086-based digital oscilloscope, which comprises: the oscilloscope display part displays the waveform of the input signal on a computer screen through the GUI of matlab; the input signal can be a signal sent by a signal generator, and can also be any externally generated voltage quantity; a frequency measuring part for measuring the frequency of the input signal and displaying the frequency by a nixie tube; and the time measuring part realizes real-time frequency measurement when the frequency of the input signal changes.)

1. An 8086-based digital oscilloscope, comprising:

the oscilloscope display part displays the waveform of the input signal on a computer screen through the GUI of matlab; the input signal can be a signal sent by a signal generator, and can also be any externally generated voltage quantity;

a frequency measuring part for measuring the frequency of the input signal and displaying the frequency by a nixie tube;

and the time measuring part realizes real-time frequency measurement when the frequency of the input signal changes.

2. The 8086-based digital oscilloscope of claim 1, wherein said real-time frequency measurement is a frequency measurement value that is refreshed every about 5 seconds.

3. The 8086-based digital oscilloscope of claim 1, wherein said input signal is a signal generated by a signal generator, or an arbitrary voltage generated externally.

4. The 8086-based digital oscilloscope of claim 1, wherein said input signal frequency measurement range is 1HZ to 65535HZ with an accuracy of 1 HZ.

Technical Field

The invention relates to the technical field of electronic instruments, in particular to a digital oscilloscope.

Background

The oscilloscope is an instrument capable of analyzing electric signals, can convert the electric signals invisible to the naked eye into visible images, and is convenient for people to research various electric phenomena. The digital oscilloscope is a high-performance oscilloscope manufactured by a series of technologies such as data acquisition, A/D conversion, software programming and the like. The digital oscilloscope works in a mode that a measured voltage is converted into digital information through an analog converter (ADC) and then displayed. The oscilloscope is not needed to be used by electronic students for experiments or in engineering for debugging circuits.

Disclosure of Invention

The invention designs a digital oscilloscope which can be realized by students aiming at the experiment teaching of the microcomputer principle.

The invention mainly comprises the following parts:

first, an oscilloscope display section:

and displaying the waveform of the input signal on a computer screen through a GUI (graphical user interface) of matlab. The input signal can be a signal sent by a signal generator, and can also be any voltage quantity generated externally.

Second, the frequency measurement section:

the frequency of the input signal is measured and displayed by a nixie tube. The frequency measurement range of the input signal is 1HZ-65535HZ, and the precision is 1 HZ.

Third, the real-time measurement part:

when the frequency of the input signal changes, the program is automatically refreshed every about 5 seconds, so that the real-time frequency measurement is realized, namely, the frequency measurement value is refreshed every about 5 seconds.

In the design of the oscilloscope, the following chips are used, namely a programmable serial port chip 8250, a level conversion chip RS232, a programmable parallel I/O interface chip 8255, an eight-bit successive approximation type AD chip AD0809 and a programmable counter 8253.

Drawings

FIG. 1 is a block diagram of the system of the present invention.

Fig. 2 is a flow chart of the programming.

Detailed Description

The invention mainly comprises the following parts:

first, an oscilloscope display section:

and displaying the waveform of the input signal on a computer screen through a GUI (graphical user interface) of matlab. The input signal can be a signal sent by a signal generator, and can also be any voltage quantity generated externally.

Second, the frequency measurement section:

the frequency of the input signal is measured and displayed by a nixie tube. The frequency measurement range of the input signal is 1HZ-65535HZ, and the precision is 1 HZ.

Third, the real-time measurement part:

when the frequency of the input signal changes, the program is automatically refreshed every about 5 seconds, so that the real-time frequency measurement is realized, namely, the frequency measurement value is refreshed every about 5 seconds.

In the design of the oscilloscope, the following chips are used, namely a programmable serial port chip 8250, a level conversion chip RS232, a programmable parallel I/O interface chip 8255, an eight-bit successive approximation type AD chip AD0809 and a programmable counter 8253.

The protection of the present invention is not limited to the above embodiments. Variations and advantages that may occur to those skilled in the art may be incorporated into the invention without departing from the spirit and scope of the inventive concept, and the scope of the appended claims is intended to be protected.