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Decoding processing method and decoding processing device for waveform data, and digital oscilloscope

A waveform data and processing method technology, applied in the field of signal measurement, can solve the problems of complex analysis data and cannot support waveform data compression, etc., to achieve the effect of simple implementation means, avoiding limitations, and reducing storage space

Active Publication Date: 2019-10-11
SHENZHEN CITY SIGLENT TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this technical solution realizes the processing function of decoded data, there are still some problems: (1) It cannot support waveform data compression for multi-threshold level decoding, such as the data compression requirements under the 1553B dual-threshold level decoding protocol; (2 ) The compressed data stream is lossless maximum compression, but FPGA implementation and decoder parsing data are more complicated

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  • Decoding processing method and decoding processing device for waveform data, and digital oscilloscope
  • Decoding processing method and decoding processing device for waveform data, and digital oscilloscope
  • Decoding processing method and decoding processing device for waveform data, and digital oscilloscope

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Embodiment 1

[0029] Please refer to figure 1 , the present application discloses a decoding processing method for waveform data, which mainly includes steps S100-S400, which will be described respectively below.

[0030] Step S100, acquiring waveform data of the signal.

[0031] It should be noted that the waveform data here refers to the data obtained by sampling the analog signal when it passes through the ADC sampling device (that is, the analog-to-digital converter), and it appears as a continuous fluctuating discrete signal in the time domain; usually, the ADC sampling device With a high sampling frequency, the number of samples extracted from the continuous signal to form a discrete signal per second is also large, and it can accurately represent the fluctuation of the continuous signal in the time domain in digital form.

[0032] Step S200, digitize the waveform data according to one or more threshold levels to obtain several sets of level data.

[0033] When the waveform data is ...

Embodiment 2

[0053] Please refer to Figure 4 , on the basis of the decoding processing method for waveform data disclosed in Embodiment 1, the present application also discloses a decoding processing device 1 for waveform data correspondingly, which mainly includes an acquisition unit 11, a first processing unit 12, a second processing unit The unit 13 and the third processing unit 14 are described separately below.

[0054] The acquisition unit 11 is used to acquire waveform data of the signal. The waveform data here refers to the data obtained by sampling the analog signal when it passes through the ADC sampling device (that is, the analog-to-digital converter), and it appears as a continuously fluctuating discrete signal in the time domain.

[0055] The first processing unit 12 is connected with the acquisition unit 11, and is used for digitizing the acquired waveform data according to one or more threshold levels to obtain several sets of level data. Specifically, when the waveform ...

Embodiment 3

[0062] Please refer to Figure 5 , the present application discloses a digital oscilloscope 2 on the basis of the waveform data decoding processing device disclosed in Embodiment 2, which mainly includes an acquisition device 21 and a decoding processing device 22, which will be described separately below.

[0063] The sampling device 21 is used for continuously sampling a signal to form waveform data of the signal. The acquisition device 21 can be an ADC sampling device (i.e., an analog-to-digital converter), which should have a relatively high sampling frequency, so that the number of samples extracted from the continuous signal and composed of a discrete signal per second is relatively large, and can be accurately measured in digital form. Represents the fluctuation of a continuous signal in the time domain.

[0064] The structure and functions of the decoding processing device 22 in this embodiment can refer to the decoding processing device 1 in the second embodiment. T...

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Abstract

The invention discloses a decoding processing method and a decoding processing device for waveform data, and a digital oscilloscope. The decoding processing method comprises the following steps of acquiring waveform data of a signal; digitizing the waveform data according to one or more threshold levels to obtain a plurality of sets of level data; preprocessing each set of level data according toa preset data compression rule to obtain compressed data, wherein the data compression rule is to represent the level state and level width of each set of level data by a binary array; and decoding the compressed data according to a decoding protocol corresponding to the data compression rule to obtain decoded data. Since the waveform data can be digitized according to a plurality of threshold levels, and the high level of the binary array is used to represent a plurality of level states, multi-threshold level protocol compression and decoding are made possible, and the limitation of decodingonly the single threshold level protocol in the prior art is solved.

Description

technical field [0001] The invention relates to the technical field of signal measurement, in particular to a decoding data processing method, a decoding processing device, and a digital oscilloscope. Background technique [0002] As the sampling rate of the oscilloscope is getting higher and higher, the storage depth is getting bigger and bigger, and the amount of decoded data is getting bigger and bigger. The current oscilloscope usually pre-processes the collected data points and then goes through the decoding process of the decoder. , get the decoded data result and display the decoded result. During this process, the sampling data is usually moved from the FPGA to the CPU computing memory, and the sampling data is preprocessed, decoded and displayed in the CPU computing memory. For an oscilloscope with a large memory depth, there are often many sampling data points, and it will take a long time to transfer all the collected data from the FPGA to the CPU, and allowing t...

Claims

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Application Information

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IPC IPC(8): G01R13/02
CPCG01R13/0209
Inventor 李富伟贺锋郑文明
Owner SHENZHEN CITY SIGLENT TECH
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