FPGA-based multipath synchronous data acquisition module

Abstract

The invention discloses an FPGA-based multi-channel synchronous data acquisition module, which belongs to the field of data acquisition technology. The FPGA controls multiple ADCs to simultaneously acquire signals, and buffers the obtained data into SRAM in sequence, and then transmits them to DSP through a serial port for further processing. Processing, including data acquisition module, FPGA clock management module, dual-open RAM module, serial interface module and AD conversion circuit module; the data acquisition module converts the analog signal of the sensor into an effectively coded digital signal by setting different parameters to adapt to different analog signals Signal; the AD conversion circuit module burns the program to the FPGA, debugs the program through the JTAG mode, and burns the program to the configuration chip in the AS mode. The invention collects multi-channel signals synchronously, effectively reduces peripheral circuits, lowers overall power consumption, and achieves higher precision when multi-channel signals are collected simultaneously.

Description

technical field [0001] The invention relates to the technical field of data acquisition, in particular to an FPGA-based multi-channel synchronous data acquisition module. Background technique [0002] Gyroscope is an indispensable core measurement device in inertial navigation system. The accuracy and speed of the data acquisition system for the acquisition of the analog signal output by the gyroscope sensor directly affect the performance of the inertial navigation system. The modern high-precision inertial navigation system puts forward high measurement requirements for the gyroscope used, and the accuracy of the data acquisition system for the gyroscope is also higher accordingly. [0003] The digital acquisition system takes the single-chip microcomputer as the core, has the characteristics of simple programming, diverse selection, flexible control, etc., and can meet the general acquisition speed and accuracy. However, when collecting multiple analog signals at the sa...

AI Technical Summary

Problems solved by technology

However, when collecting multiple analog signals at the same time, it is difficult to implement an acquisition system with a single-chip microcomputer as the core. Usually, multiple single-chip microcomputers are required to be connected and simultaneously collected, or an external chip is used to control multiple signals.

But this will undoubtedly increase a large number of peripheral circuits, which will make the system more complex, affect the reliability of the entire system, increase system power consumption, and cause waste of resources. Therefore, a new type of processor is required as the core of the entire system.