基于双路DSP的救援井探测数据通信系统

Data Communication System for Rescue Well Detection Based on Dual-Channel DSP

针对传统救援井系统信号传输速率低、信号误码率高等问题设计了基于双路DSP的救援井探测数据通信系统。首先,地面控制系统以CMD模式下发命令。一路DSPIC1控制HD-15530将CMD模式下发的命令解码,然后指示另一路DSPIC2响应CMD命令,控制AD7656采集数据。DSPIC2控制HD-6409将采集的数据以M5的工作模式编码上传地面控制系统。同时为防止M5模式上传异常,DSPIC2将数据传输至DSPIC1,通过HD-15530以M2模式编码上传地面控制系统。该系统采用两路DSPIC分开控制编码与解码,数据可以两种模式编码上传,实现高效率、低误码率的数据通信。

Aiming at the low signal transmission rate and high signal error rate of traditional rescue well systems,a dual-channel DSP-based rescue well detection data communication system is designed.Firstly,the ground control system issues commands in CMD mode.One dsPIC(DSPIC 1)is adopted to control HD-15530 decoding the CMD commands.Then D SPIC1 instructs another dsPIC(DSPIC2)to respond to the CMD commands and control the AD7656 acquiring the rescue well data.The collected data are encoded in M5 mode by HD-6409 and upload to the ground control system.At the same time,the collected data are transferred from DSPIC2 to DSPIC 1 and uploaded to the ground control system in M2 mode encoded by the HD-15530 to prevent failed M5 data transmission.The system uses two dsPICs to control encoding and decoding separately.The data can be encoded and uploaded in two modes to achieve high efficiency and low error rate data communication.