A real-time storage method of high-speed a/d sampling data based on fpga

A sampling data, real-time technology, applied in the direction of data acquisition and recording, etc., can solve the problems of increased cost of acquisition system, signal processing chip FPGA and data storage chip SRAM operating speed cannot reach such a high level, etc.
CN103678729BInactive Publication Date: 2016-08-17CHINA ELECTRONIS TECH INSTR CO LTD
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA ELECTRONIS TECH INSTR CO LTD
Publication Date
2016-08-17
Estimated Expiration
Not applicable ยท inactive patent

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Abstract

The invention provides a high-speed A / D sampling data real-time storage method achieved based on an FPGA. High-speed A / D outputs four lines of 12-bit-wide differential data after sampling to send the four lines of 12-bit-wide differential data to the FPGA to carry out processing, and the data sampled by the high-speed A / D are ultimately written into two pieces of SRAMs without loss in real time after being processed through speed reduction, bit wide expansion combination, data buffering and timing sequence matching and the like in the FPGA. Through the adoption of the scheme, the problems that the data output rate of the high-speed A / D does not match with the storage rate of the SRAMs, and the output data width of the high-speed A / D does not match with the storage interface width of the SRAMs and the contradiction between the retention time of SRAM bus data and the update rate of the high-speed A / D converter data are solved effectively, the correct A / D sampling data can be stored into the SRAMs without loss in real time, and the quality of data storage is guaranteed under the situation that the system working efficiency is improved.
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Description

technical field

[0001] The invention belongs to the technical field of data acquisition and design, and in particular relates to a method for real-time storage of high-speed A / D sampling data realized based on FPGA. Background technique

[0002] With the advancement of the large-scale integrated circuit chip manufacturing process, the sampling rate of the A / D converter in the digital sampling system is getting higher and higher with the application requirements. At present, the high-speed A / D application with a sampling rate of 1GSPS and above has become a high-sampling The method adopted by the system is difficult to implement due to the high sampling rate, such as sampling design and storage design, and there are not many applications.

[0003] In the sampling system, the storage design of the sampling system with a sampling rate below 1GSPS is relatively easy to do. For example, a sampling system with a sampling rate of 200MSPS and 16-bit resolution has a data processing ...

Claims

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