A kind of integrated filter system based on fpaa and fpga technology

Abstract

The invention discloses a comprehensive filtering system based on field programmable analog array (FPAA) and field programmable gate array (FPGA) technology. The comprehensive filtering system is composed of an FPGA module and an FPAA filtering module. The FPGA module mainly finishes digital filter design and various frequencies required by the FPAA module. An FPAA filter is mainly used for finishing a signal processing circuit. By designing different controller intellectual property (IP) cores, a digital filtering function is achieved inside the FPGA. By combining different filtering CAB blocks of the FPAA, simulation filtering of various types and different orders is achieved. By comparing a digital filtering effect and a simulation filtering effect in real time, a double-filtering function of the simulation filtering and the digital filtering is achieved. By using the advantages of the FPGA technology on processing digital signals and the advantages of the FPAA technology on the simulation signals, processing effect research of the digital filtering and the simulation filtering is achieved. The comprehensive filtering system has the advantages of being fast and convenient to upgrade, rich in filter design types and the like.

Description

technical field [0001] The invention relates to filter design and integrated circuit application, and belongs to the field of signal processing. Background technique [0002] With the advent of the era of micro-sensors, it is more and more important to efficiently process the weak signals of sensors, and it is more important to extract useful signals in the conditioning circuit of micro-signals. The current filter circuit is mainly divided into two types of analog filter and digital filter. The analog filter is mainly constructed of discrete components and medium-integrated scale circuits. High, and it is difficult to debug at the same time; digital filtering first needs to convert the signal to analog to digital, which inevitably loses a lot of useful information. The emergence of well solved the above problems. Chinese patent 201020685324.0 introduces a program-controlled filtering device. In this patent, four types of filters, low-pass, high-pass, band-pass, and band-re...

AI Technical Summary

Problems solved by technology

The current filter circuit is mainly divided into two types of analog filter and digital filter. The analog filter is mainly constructed of discrete components and medium-integrated scale circuits. High, and it is difficult to debug at the same time; digital filtering first needs to convert the signal to analog to digital, which inevitably loses a lot of useful information. The emergence of a good solution to the above problems

Chinese patent 201020685324.0 introduces a program-controlled filtering device. In this patent, four types of filters, low-pass, high-pass, band-pass, and band-stop, can be realized through function switches, but the switching of different types of filters is inflexible.

Images