高一致性全固态水下电场传感器的制备与性能测量  

Preparation and performance measurement of high-consistency all-solid-state underwater electric field sensor

作　　者：张扬 牛晓博 姚琦 纪延达 ZHANG Yang;NIU Xiaobo;YAO Qi;JI Yanda(Department of Information and Communication,Naval Petty Officer Academy,Bengbu 233012,China)

机构地区：[1]海军士官学校信息通信系,安徽蚌埠233012

出　　处：《传感器与微系统》2024年第7期82-84,88,共4页Transducer and Microsystem Technologies

摘　　要：本文综合国内外的电极制备的设计工艺和结构,利用固相球磨加冷冻干燥制备全固态Ag/AgCl电极前驱粉体,在与纳米银粉混合中添加碳纳米管(CNTs)作为造孔剂,经压制烧结得到Ag/AgCl电极坯体。设计了内置电极溶液的结构,解决了电极裸露在海水中不稳定和存储运输困难的问题。使用DM6500六位半万用表和EMA10斩波放大器为核心的测量平台对电极性能进行了测量,所设计制备的6个电极,任意电极配对极差最大约38μV,电极对漂移小于5μV/24h,电极自噪声小于0.7√nV/Hz@1Hz。所设计制备的水下电场传感器达到了国内外先进水平,且具备了工程化应用能力。Design processes and structures of domestic and international electrode preparation are integrated,utilizing solid-phase ball milling and freeze-drying to prepare all-solid Ag/AgCl electrode precursor powder.Carbon nanotubes(CNTs)are added as a pore-forming agent during the mixing with nano-silver powder,and the Ag/AgCl electrode blanks are obtained through pressing and sintering.A structure with an built-in electrode solution is designed,addressing issues of electrode instability when exposed to seawater and difficulties in storage and transportation.The electrode performance are measured using a measurement platform centered around a DM6500 six-and-a-half digital multimeter and an EMA10 chopper amplifier.Among the designed and prepared six electrodes,the maximum difference between any electrode pairs is about 38μV,the electrode pair drift is less than 5μV/24 h,and the electrode self-noise is less than 0.7 nV/√Hz@1 Hz.The designed and prepared underwater electric field sensor reaches the advanced level both domestically and internationally,and possesses engineering application capabilities.

关 键 词：电场传感器 Ag/AgCl电极 漂移 自噪声 

分 类 号：TP212.9[自动化与计算机技术—检测技术与自动化装置]