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A Method of Accurately Positioning the Trigger Position Based on Programmable Circuit

A technology of precise positioning and trigger position, which is applied in the field of signal processing, can solve the problems of time-consuming, easy to miss key occasional signals, and low capture rate of oscilloscope waveforms, and achieve clear division of labor, clear execution process, easy coordination control and cross-border The effect of platform porting

Active Publication Date: 2021-06-01
CHINA ELECTRONIS TECH INSTR CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In summary, the main problem solved by this application is that it takes a long time for the software to interpolate and accurately locate the trigger position, resulting in a low waveform capture rate of the oscilloscope, and it is easy to miss key occasional signals

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  • A Method of Accurately Positioning the Trigger Position Based on Programmable Circuit
  • A Method of Accurately Positioning the Trigger Position Based on Programmable Circuit
  • A Method of Accurately Positioning the Trigger Position Based on Programmable Circuit

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Embodiment Construction

[0049] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0050] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinations thereof.

[0051] Based on the strong computing power of the software and the fast execution speed of the hardware, this so...

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Abstract

The invention discloses a method for accurately locating a trigger position based on a programmable circuit, which includes: detecting the time base gear and trigger delay of a data acquisition and analysis instrument; judging whether the user changes the time base gear or trigger delay, and if so , then set the software parameters and send them to the field programmable gate array FPGA through bus communication to restart the acquisition and interpolation process; the processor obtains the sampling data and combines the real-time sampling data into an array according to the combination of channels; When in the interpolation gear, real-time interpolation is performed, and then the trigger point is repositioned to adjust the interpolation point so that the generated waveform can be stably displayed with the trigger level as the reference point. In the present disclosure, pure hardware realizes interpolation and triggers precise positioning, and the time consumption is small. The scheme has a clear division of labor. According to the execution speed of the software and hardware, combined with the real-time requirements of the oscilloscope, the key parameters required by the hardware interpolation are calculated by giving full play to the characteristics of the strong computing power of the software.

Description

technical field [0001] The present disclosure relates to the technical field of signal processing, in particular to a method for precisely locating a trigger position based on a programmable circuit. Background technique [0002] In data acquisition and analysis instruments such as oscilloscopes, the process of reducing the waveform sampling rate to remove too much data is called signal extraction, and the process of increasing the waveform sampling rate to increase data is called signal interpolation. Interpolation means inserting calculated values ​​between the data points collected by the ADC according to a specific algorithm, so as to increase the sampling rate and analyze the signal details more clearly. There are three common interpolation methods: linear interpolation, hold interpolation and sinusoidal interpolation. [0003] Such as Image 6 As shown, sine interpolation is also called "sin(x) / x" interpolation, which is the most commonly used interpolation method. T...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R13/02
Inventor 刘永刘洪庆张成森郭桂雨王励郭同华邵建波向前李云彬王啸
Owner CHINA ELECTRONIS TECH INSTR CO LTD
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