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Triggering method based on oscilloscope measurement parameters

A technology for measuring parameters and oscilloscopes, applied in measuring devices, measuring electrical variables, instruments, etc., can solve the problems that the description of waveform characteristics is not intuitive and accurate, and the extraction of target waveforms is not accurate enough.

Active Publication Date: 2021-03-12
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these trigger methods are not intuitive and accurate enough to describe the waveform characteristics in actual use, resulting in inaccurate extraction of target waveforms

Method used

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  • Triggering method based on oscilloscope measurement parameters
  • Triggering method based on oscilloscope measurement parameters
  • Triggering method based on oscilloscope measurement parameters

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Embodiment

[0045] figure 1 It is a specific implementation flow chart of the trigger method based on the oscilloscope measurement parameters of the present invention. Such as figure 1 As shown, the present invention is based on the concrete steps of the trigger method of oscilloscope measurement parameter comprising:

[0046] S101: Signal sampling:

[0047] The ADC module in the oscilloscope collects the input analog signal to obtain ADC sampling data.

[0048] S102: level comparison:

[0049] Set the high level value V according to the actual situation H and a low level value of V L , Compare the ADC sampling data with the high and low level values ​​to determine the rising and falling edges of the input analog signal. figure 2 It is a schematic diagram of determining the rising and falling edges according to the high and low level values.

[0050] S103: Select the trigger mode:

[0051] According to the actual needs, select a trigger method among the alternative trigger method...

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Abstract

The invention discloses a triggering method based on oscilloscope measurement parameters. The method comprises the following steps of: acquiring ADC acquisition data, comparing the ADC acquisition data with preset high and low level values, determining a rising edge and a falling edge of an input analog signal, and selecting one triggering mode from alternative triggering modes, wherein the alternative triggering modes comprise a time parameter triggering mode, an amplitude parameter triggering mode and a combined parameter triggering mode, different triggering modes adopt different triggeringjudgment methods, measurement parameters of an oscilloscope are directly used as triggering conditions in each triggering mode, and a triggering signal is generated when the triggering conditions aremet; and controlling storage and reading operation of ADC sampling data so as to complete the parameter triggering function of the oscilloscope. According to the invention, the measurement parametersof the oscilloscope are directly used as trigger conditions, so that the characteristics of the target waveform are described more visually and accurately, a user can find out the target waveform part more conveniently and quickly, and the user can understand the target waveform part conveniently.

Description

technical field [0001] The invention belongs to the technical field of digital storage oscilloscopes, and more specifically relates to a trigger method based on oscilloscope measurement parameters. Background technique [0002] Triggering is to display and stabilize the waveform according to the conditions set by the user on the oscilloscope panel. In essence, it is to identify the characteristics of the waveform that the user is interested in. It is one of the important functions of the digital storage oscilloscope. Generally, the trigger mode of the oscilloscope is divided into the basic edge trigger mode and the advanced trigger mode for identifying characteristics such as pulse width and slope. Domestic oscilloscope research started relatively late, relatively speaking, the trigger system is relatively rudimentary, and some oscilloscopes have gradually caught up with foreign standards in terms of advanced triggering, but the main disadvantage is that the same function is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R13/02
CPCG01R13/0254
Inventor 张沁川黄鲭萤叶芃邱渡裕黄武煌
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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