供配电模块的高精度采集的设计

To solve the power distribution unit’s stability and reliability, This paper introduces a design of a high-precision data acquisition system processor about FPGA, it studied the voltage conversion by using subtraction circuit design techniques, colleting multi-channel acquisition and disposing real-time multi-channel telemetry signal processing. It transferred the data to computer completed the real-time status monitoring. The research stressed the acquisition and distribution of high-progress Circuit Design, describing the transmission and implementation of RS422 data transmission module and receiving the process and the UART core functions. After a lot ofStests,it showed thatSthe schemeSis stable、practical and meets the design requirements.     

一种遥测数据实时采集压缩系统的实现

This paper introduces a design of variable-speed large-capacity telemetry data acquisition scheme. By using a lossless compression algorithm to improve the compression ratio、the plurality of data compression、decompression speed and compression performance of the algorithm complexity, etc. It presented a data compression core algorithm of LZW (Lempel-Ziv-Welch) and simulated the results of its execution speed and compression algorithms through software. Using master chip FPGA it completed the high-precision data acquisition compression and acquiried the systems overall compression test. After a lot ofStests,it showed thatSthe schemeScompleted a six-way real-time acquisition and compression speed varying parameters, the compression ratio is above 1.8:1 and the indicators meet the design requirements.     

混合数据采集与存储的实现

设计了一种传感器信号与GPIO口数字量隔离与采集的方案,研究了模拟信号线性光耦的隔离与电压转换技术,提出了采用光耦隔离模拟量与数字信号,利用主控芯片FPGA完成单路采样率不低于5 kHz的模拟量与数字量数据的混合编帧,使用缓冲FIFO实时完成记录仪的发送与接收,通过对数据的的回读来确保数据传输的正确性与可靠性;经大量测试表明,该方案稳定、实用,满足系统的实时性要求。