面向疏浚工程的电阻层析测量系统优化设计  

Optimized Design of Electrical Impendence Tomography Measurement Systemfor Dredging Project

作　　者：于涛 罗刚[1] 辛长浩 岳士弘 YU Tao;LUO Gang;XIN Changhao;YUE Shihong(CCCC Tianjin Waterway Bureau Co.,Ltd.,Tianjin 300457,China;School of Electrical Automation and Information Engineering,Tianjin University,Tianjin 300072,China)

机构地区：[1]中交天津航道局有限公司,天津300457 [2]天津大学电气自动化与信息工程学院,天津300072

出　　处：《自动化仪表》2023年第9期12-16,26,共6页Process Automation Instrumentation

基　　金：国家自然科学基金资助项目(61973232)。

摘　　要：针对当前疏浚工程的测量要求,在现有的电阻层析(EIT)测量系统基础上,围绕系统的传感器阵列、数据采集系统和上位机测量系统三个部分进行优化。首先,根据疏浚管道的实际工况以及EIT技术对传感器阵列的要求,对传感器阵列进行了耐久性、稳定性和抗干扰性方面的优化。然后,从EIT采集系统出发,分析了影响信噪比以及采集速率的主要因素,分别从电路层面的三个方面进行了相关优化。利用试验数据进行了采集系统性能的验证。系统信噪比由原有的52 dB提升到了73 dB。最后,围绕当前采集系统的改进,分别对上位机的通信模块以及数据预处理模式进行了适配升级。整体优化后的EIT测量系统较原有系统性能得到了显著的提升。Aiming at the measurement requirements of current dredging projects, on the basis of the existing electrical impendence tomography(EIT) measurement system,the system is optimized around three parts: the sensor array, data acquisition system and host computer measurement system. Firstly, according to the actual working conditions of the dredging pipeline and the requirements of EIT technology on the sensor array, the sensor array is optimized in terms of durability, stability and anti-interference. Then, from the EIT acquisition system,the main factors affecting the signal-to-noise ratio and acquisition rate are analyzed,related optimization are realized bythree aspects at the circuit level separately. The performance of the acquisition system is verified by using the test data. The system signal-to-noise ratio is increased from the original 52 dB to 73 dB.Finally, the communication module of the host computer and the data preprocessing mode are adapted and upgraded around the improvement of the current acquisition system. The overall optimized EIT measurement system has significantly improved the performance compare the original system.

关 键 词：电阻层析 测量系统 信噪比 数据采集模块 数模转换 模数转换 传感器 疏浚工程 

分 类 号：TH709[机械工程—仪器科学与技术]