A system and method for realizing super large storage depth of logic analyzer

A technology of logic analyzer and storage depth, which is applied in the direction of instruments, electrical digital data processing, etc., and can solve the problem of small storage depth

Active Publication Date: 2019-08-16
青岛金思特电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to propose a system and method for realizing the super-large storage depth of the logic analyzer, so that the memory of the computer or mobile device can be used as the sampling memory of the logic analyzer for the defects of the prior art such as small storage depth. use, thereby achieving a memory depth far beyond what traditional designs can provide, and expanding the application range of logic analyzers

Method used

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  • A system and method for realizing super large storage depth of logic analyzer
  • A system and method for realizing super large storage depth of logic analyzer
  • A system and method for realizing super large storage depth of logic analyzer

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Embodiment 1

[0030] Embodiment 1, reference figure 1 , the present embodiment proposes a system for realizing the super-large storage depth of a logic analyzer: including a logic analyzer hardware circuit and a computer / mobile device terminal logic analyzer control module connected to it through a USB bus; the logic analyzer hardware circuit includes a front end Signal conditioning network, FPGA unit, and USB interface unit; the front-end signal conditioning network preprocesses the external measured signal, and the FPGA unit samples and coordinates the preprocessed signal and transmits the data stream to the logic analyzer through the USB interface unit The control module analyzes and displays; the logic analyzer control module includes a sequentially connected bottom USB driver module, a receiving buffer queue module and a data processing display module, and the bottom USB driver module is connected with the USB interface unit to realize sampling data Upload directly to the computer / mobi...

Embodiment 2

[0039] Embodiment 2, according to the system described in embodiment 1, also propose a kind of method that realizes the super large memory depth of logic analyzer, after the hardware circuit of logic analyzer carries out front-end sampling and preprocessing to the signal under test, buffer through first-level high-speed FIFO The module transmits the sampling data to the USB2.0 / 3.0 interface. On the one hand, the computer / mobile device control module needs to continuously read out the data stream, and on the other hand, it needs to analyze the data stream and stop when the set condition is reached. Sampled and displayed on the UI interface, the control module is also responsible for receiving various control and setting commands from the user to complete specific functions.

[0040] It specifically includes the following steps: A. Connect the logic analyzer to the computer / mobile device through the USB bus. After the hardware circuit of the logic analyzer performs front-end samp...

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Abstract

The invention discloses a system and a method for realizing the extra-large storage depth of a logic analyzer. The system comprises a logic analyzer hardware circuit and a logic analyzer control module, wherein the logic analyzer hardware circuit preprocessing an external tested signal through a front-end signal conditioning network, then, the preprocessed signal is sampled and subjected to overall planning control via a FPGA (Field Programmable Gate Array) unit, and a data stream is transmitted to the logic analyzer control unit to be analyzed and displayed through a USB (Universal Serial Bus) interface unit; and the logic analyzer control module realizes a purpose that sampled data is directly uploaded to a computer / mobile equipment memory. By use of the system, hardware equipment and a control software part are designed, so that the memory of the computer or the mobile equipment can be used as the sampling storage device of the logic analyzer so as to realize storage depth which is far larger than storage depth which can be provided by traditional design, the extra-large storage depth can cause the logic analyzer to easily cope with the collection and analysis work of a large data size, and great convenience is brought to intelligent equipment research and development work which becomes increasingly popular.

Description

technical field [0001] The invention belongs to the field of logic analyzer design, and in particular relates to a system and method for realizing a super-large storage depth of a logic analyzer. Background technique [0002] A logic analyzer is an instrument specially used to collect and analyze digital signals. It can sample the measured signal at a certain frequency, and then convert it into logic "0" or logic "1" according to the voltage value of the sampling point. Then connect these continuous "0 / 1" into a digital waveform, so as to make further analysis based on the waveform, and help technicians find problems, record data, proofread the system, etc. [0003] Logic analyzers have two most important parameters: sample rate and memory depth. Sampling rate is the sampling frequency of the signal under test, that is, how many sample points of the signal under test need to be collected on average per second; storage depth refers to the maximum number of samples that can b...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): G06F13/16
CPCG06F13/1673
Inventor崔长胜宋雪松吴常玉
Owner青岛金思特电子有限公司