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A kind of digital processing circuit based on fpga which combines integration and high-pass filtering

A technology of high-pass filtering and digital processing, applied in the direction of digital technology network, electrical components, impedance network, etc., to achieve the effect of saving FPGA resources, avoiding the difficulty of realizing high-speed pipeline design, and avoiding DC bias problems

Active Publication Date: 2022-05-31
WUHAN NARI LIABILITY OF STATE GRID ELECTRIC POWER RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a digital processing circuit based on FPGA that mixes integration and high-pass filtering in order to solve the technical defects of the traditional lightning location system signal front-end signal processing unit, replacing the integration and high-pass filter unit of the traditional lightning location system front-end processing signal

Method used

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  • A kind of digital processing circuit based on fpga which combines integration and high-pass filtering
  • A kind of digital processing circuit based on fpga which combines integration and high-pass filtering

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Experimental program
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Embodiment Construction

Synchronous outputs to the first and second multipliers.

Described first floating-point multiplier is used to carry out operation to the output numerical value of first register and parameter selector, real

c in the formula

2

*y(n‑2), and output the operation result to the first adder.

Described second floating-point multiplier is used to carry out operation to the output numerical value of first register and parameter selector, real

c in the formula

1

*y(n‑1), and output the operation result to the second adder.

Described control circuit mainly comprises two counters and some sequential logic and reset logic, for controlling

The output time of the FIFO result in the entire integrating high-pass hybrid circuit, the data input time of the first adder and the second adder

and the extraction time of the output result of the calculation and the reset and initialization time of these two adders. The control circuit also implements the

The calculation result of t...

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Abstract

The invention discloses a design digital processing circuit which combines integration and high-pass filtering, and the circuit includes a fixed-point floating-point converter, a floating-point subtractor, a FIFO, a first floating-point adder, a first floating-point multiplier, and a first floating-point multiplier. Two floating-point adders, a second floating-point multiplier, a first register, a second register, a first counter, a second counter, a parameter input selector, and a control circuit. The invention can realize the integral filtering function of the lightning signal. Based on DSP and FPGA technology, the present invention combines integral and high-pass filtering functions to realize lightning signal processing, and solves the problem of distortion in short-distance and high-intensity lightning signal processing.

Description

A digital processing circuit that combines integration and high-pass filtering based on FPGA technical field The invention belongs to lightning signal location (measurement) technical field, especially belong to a kind of based on FPGA to integrate and high-pass Filtering hybrid digital processing circuit. Background technique The signal front-end signal processing unit of the traditional lightning location system is constructed by an analog circuit, and its functions include signal Signal amplification, low-pass filtering, integration, and high-pass filtering. The front-end signal processing unit built by the analog circuit is in a larger range. It avoids the low signal-to-noise ratio caused by the low signal strength of the lightning electromagnetic field obtained by the antenna and the large background noise interference. The problem. However, in the actual operation of the above analog circuit, when the lightning signal distance is relatively close and the ligh...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03H17/02
CPCH03H17/02H03H2017/0298
Inventor 张波陈扬王宇许远根王钊黎炎白冰洁韩冬邓璐黄松鄢佩瑶刘泽
Owner WUHAN NARI LIABILITY OF STATE GRID ELECTRIC POWER RES INST