Multi-Channel High Speed Data Acquisition System Design And Realization Of The Control Platform

With the progress of science and technology, people in the big data standard of the performance of data acquisition system is becoming more and more high, the performance of ascension is extremely urgent. But the high performance of multi-channel high-speed data acquisition system is yet to be improved. In this thesis, the design and implementation is acquisition system control platform, based on the collection system is a multi-channel and high-speed acquisition system. Acquisition system based on DSP control platform of the main control chip, with FPGA as the core chip of data processing, using DDR3 for system storage memory, PCI_EXPRESS to transfer bus, at the same time, the transmission of data to the computer, the computer’s application to the data in the form of waveform display. System is made from control circuit, signal conditioning circuit, clock source circuit, data acquisition, data processing circuit, driver and application software. The existing acquisition system is mostly channel fixed, sampling frequency is adjustable, the acquisition system flexibility is insufficient, the application range is relatively narrow. This paper design system is a single, double, multi-channel optional collection system. System collection rate is variable at the same time, the realization of the function of these is primarily the acquisition system has a separate control platform. In this paper, the control platform is the front end of the high-speed data acquisition system, it mainly include DSP hardware circuit and PC application software of two parts, to realize the integration of the control platform. Control platform hardware circuit to realize the control of the signal conditioning circuit and clock source circuit. Signal conditioning circuit is mainly responsible for the input analog signal attenuation and amplification function such as A/D conversion, the clock source is mainly responsible for the system to provide the required clock frequency sampling rate clock. The composition of the software of the control platform is human computer interaction application software, it is mainly used for the configuration of the control parameters, data display, access, playback, etc.Control platform of this paper chose TMS320VC5509 A DSP as control chip, it was a chip of TI company, it has low power consumption, and also has a high performance, its integrated development environment based on CCS(Code Composer Studio, CCS) version 6.0. Human computer interaction application software based on Visual Studio 2013 development environment. Paper first introduces the structurally overall design scheme of multi-channel high-speed data acquisition system, system control platform design and implementation scheme of hard and soft, human computer interaction application software design and implementation. Finally integrated control platform was tested, after the success of the test, and the whole acquisition system for joint debugging. Test results show that this paper can control platform for effective control of the entire collection system, realizes the flexibility and reliability of the acquisition system work, multi-channel high-speed data acquisition system is proved the feasibility of the control platform design.