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Signal sampling teaching demonstration instrument based on time domain waveform

A time-domain waveform and signal sampling technology, applied in the field of education or demonstration equipment, can solve the problems that students cannot produce clear and intuitive cognition of sampling theorem, and there is no teaching demonstration equipment, so as to enhance system flexibility, objectivity, and strong intuitive effect

Active Publication Date: 2019-08-16
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Because the sampling of the signal is very abstract, most students cannot have a clear and intuitive understanding of the sampling theorem, and a teaching demonstrator showing the signal sampling process can solve this problem well, but there is no such teaching at home and abroad presentation tool

Method used

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  • Signal sampling teaching demonstration instrument based on time domain waveform
  • Signal sampling teaching demonstration instrument based on time domain waveform
  • Signal sampling teaching demonstration instrument based on time domain waveform

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Embodiment Construction

[0035] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and in conjunction with specific embodiments. The present invention can also be illustrated or implemented by other different specific examples. Equivalent transformations made by those skilled in the art within the scope of the claims all belong to the protection category of the present invention.

[0036] The present invention provides a signal sampling teaching demonstration instrument based on time-domain waveforms, which can represent signal under-sampling, over-sampling and The sampling process.

[0037] like figure 1 As shown, this embodiment provides a signal sampling teaching demonstration instrument based on time-domain waveforms, including: base 1, lower substrate 6, upper substrate 10, main power module 9, main control module 11, parameter setting...

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Abstract

The invention relates to a teaching or demonstration tool, in particular to a signal sampling teaching demonstration instrument based on a time domain waveform. The sampling theorem for the time domain waveform is demonstrated, a student visually observes the sampling, equal-sampling and under-sampling process, and therefore the perceptual knowledge of the sampling theorem is improved into the conceptual knowledge, and the teaching work effect is further improved. In the instrument, a sampling pulse demonstration screen is a transparent non-backlight liquid crystal display and displays a grid-shaped pattern for representing sampling pulse signals, and the grid distance represents the sampling time interval of sampling pulses. An original signal demonstration screen is a backlight liquid crystal display and displays a time domain waveform pattern, and the pattern, observed by human eyes through the sampling pulse demonstration screen, of the original signal demonstration screen represents after-sampling sample signals.

Description

technical field [0001] The invention relates to an educational or demonstration appliance, in particular to a signal sampling teaching demonstration instrument based on a time domain waveform. Background technique [0002] Teaching instruments can intuitively display scientific laws, deepen students' understanding of knowledge, and enable students to establish scientific thinking methods. In the process of carrying out education work, more and more teaching instruments and equipment have been used in the classroom. It can be said that teaching instruments have developed into a means of modern education and the material basis for the development of education. Its equipment status and quality level It directly affects the quality of education and teaching in schools. [0003] With the development of the information and communication industry and the electronics industry, pure analog systems have been gradually replaced by digital systems. Sampling is the basis of digital sig...

Claims

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Application Information

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IPC IPC(8): G09B23/06
CPCG09B23/06
Inventor 陈春雪陈祝明段淇艺王林翰
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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