Fast Acquisition System of Digital 3D Oscilloscope Based on FPGA

A data acquisition module, three-dimensional technology, applied in digital variable display, digital variable/waveform display, electrical digital data processing and other directions, can solve the problem of complex control logic, achieve simple logic control, improve waveform capture rate, and save storage resources. Use a reduced effect

Active Publication Date: 2020-12-01
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The advantage of this method is that it can reduce the dead time and improve the waveform capture rate. The disadvantage is that two FIFO modules need to be instantiated, using more FIFO resources, and the control logic is more complicated.

Method used

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  • Fast Acquisition System of Digital 3D Oscilloscope Based on FPGA
  • Fast Acquisition System of Digital 3D Oscilloscope Based on FPGA
  • Fast Acquisition System of Digital 3D Oscilloscope Based on FPGA

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Embodiment

[0031] figure 1 It is a structural diagram of a specific embodiment of the FPGA-based digital three-dimensional oscilloscope fast acquisition system of the present invention. Such as figure 1 As shown, the FPGA-based digital three-dimensional oscilloscope fast acquisition system of the present invention includes an ADC module 1, a sampling module 2, a trigger module 3, a data acquisition module 4, a control module 5, a digital three-dimensional mapping module 6, a host computer 7 and a display module 8 , where the sampling module 2, the triggering module 3, the data acquisition module 4, the control module 5, and the digital three-dimensional mapping module 6 are realized in FPGA (Field-Programmable Gate Array, Field Programmable Gate Array), and each module is described in detail below illustrate.

[0032] The ADC module 1 collects the input signal, the resolution of the ADC module is M bits, and the collected sampling sequence ADC_DATA is sent to the sampling module 2 and ...

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Abstract

The invention discloses a fast acquisition system for a digital three-dimensional oscilloscope based on FPGA. The signal to be measured is collected by an ADC module and stored in a data acquisition module through a sampling module. The inside of the data acquisition module is a DTO_FIFO, and the DTO_FIFO is read and written by The control module is controlled by a counter so that it can read out the previous frame of waveform data for mapping while storing the current frame of waveform data; when the number of frames mapped by the waveform in the digital three-dimensional mapping module reaches the set value of the host computer, the host computer Read the mapping result stored in RAM, and convert it into RGB value for display in the display module. The present invention can also save FIFO storage resources while improving the DTO waveform capture rate.

Description

technical field [0001] The invention belongs to the technical field of digital three-dimensional oscilloscopes, and more specifically relates to a fast acquisition system for digital three-dimensional oscilloscopes based on FPGA. Background technique [0002] With the continuous development of electronic testing technology, the capture of abnormal signals has become a hot issue in the field of time domain testing. Traditional oscilloscopes can only move each frame of waveform that satisfies the trigger to the screen for display, and it is difficult for users to directly observe the frequency of abnormal signals. In order to improve the capture rate of the oscilloscope and solve the user's demand for abnormal signal observation, a new type of digital oscilloscope (Digital Three-Dimensional Oscilloscopes, referred to as DTO) has gradually become the mainstream of the market. The data collected by DTO is stored in the waveform database after being processed by waveform mapping...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R13/02G06F5/06
CPCG01R13/0254G01R13/0272G06F5/06
Inventor 许波陈凯程玉华杨云鹏邹松庭颜雁军张硕韩文强赵佳
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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