Excitation acquisition system of TMS320F28 series DSP

Abstract

The invention relates to an excitation acquisition system of a TMS320F28 series DSP. The system comprises a DSP chip of a TMS320F28 series, wherein the DSP chip is connected with an upper computer through a serial port communication module, the DSP chip is expanded to be externally connected with a DA module through an SPI interface module, and the DSP chip is further provided with an internal ADconversion module, a PWM pulse width modulation module, a DMA direct memory access module and a plurality of internal I / O ports. The system can conveniently output multiple paths of analog signals andcollect multiple paths of signals (AD conversion), can also generate multiple paths of logic signals and collect multiple paths of logic signals, and can conveniently communicate with an upper computer.

Description

technical field [0001] The invention relates to an excitation acquisition system of TMS320F28 series DSP. Background technique [0002] In the field of signal detection, it is often necessary to generate a specific signal to stimulate the object, so as to obtain the hidden relevant information of the stimulated object, while in the field of system control, it is to collect the relevant information of the controlled object, and output the corresponding control amount accordingly. In both application scenarios, similar data acquisition and upper computer output control are required. For complex, high-speed upper computer applications, the dual functions of signal excitation and data acquisition cannot often be realized. Professional data acquisition cards have waveform generation and waveform acquisition functions, but they are expensive. Contents of the invention [0003] The purpose of the present invention is to provide a TMS320F28 series DSP excitation acquisition syst...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a TMS320F28 series DSP excitation acquisition system, which solves the problem that the existing system has complex requirements on the upper computer and cannot realize the dual functions of signal excitation and data acquisition, and the present invention can conveniently output multiple Simultaneously, it can generate multiple logic signals and collect multiple logic signals, and communicate with the host computer conveniently

Images