电流型氮氧化物传感器输出特性分析及控制策略的优化  

Output Characteristic Analysis and Control Strategy Optimization of Yttria-Stabilized Zirconia Solid-Sate Electrolyte Based Amperometric Nitrogen Oxide Sensor

作　　者：王佐硕 邹杰[1,3] 王梓 李玉美 简家文 周明军[2] 谢光忠 WANG Zuoshuo;ZOU Jie;WANG Zi;LI Yumei;JIAN Jiawen;ZHOU Mingjun;XIE Guangzhong(Faculty of Electrical Engineering and Computer Science,Ningbo University,Ningbo Zhejiang 315211,China;The 49th Research Institute of China Electronics Technology Group Corporation,Harbin Heilongjiang 150023,China;School of Optoelectronic Science and Engineering,University of Electronic Science and Technology of China,Chengdu Sichuan 610054,China)

机构地区：[1]宁波大学信息科学与工程学院,浙江宁波315211 [2]中国电子科技集团第四十九研究所,黑龙江哈尔滨150023 [3]电子科技大学光电科学与工程学院,四川成都610054

出　　处：《传感技术学报》2022年第4期454-460,共7页Chinese Journal of Sensors and Actuators

基　　金：国家自然科学基金(61971251);国家博士后基金(2019M663474);浙江省自然科学基金(LGG22F010017,LY18F010009);宁波市自然科学基金(2018A610002)。

摘　　要：为提高基于钇稳定氧化锆固体电解质的电流型氮氧化物(NO_(x))传感器的测量精度,设计了基于LabVIEW模块化软件的NO_(x)传感器全开放测试系统。对传感器工作原理进行分析并优化了氮氧化物传感器的控制策略。在研究过程中,首先对NO_(x)传感器的各个功能模块进行独立测试,得到传感器的最佳工作温度及主泵、辅助泵、测量泵的极限电流输出特性曲线。分析的结果表明:传感器具有良好的饱和电流平台,并且随着传感器工作温度的升高极限电流不断增大;随后,在对传感器气敏特性的进一步测试中发现:在定电压控制策略和含氧环境下,传感器的极限电流与NO_(x)浓度存在优良的线性关系;最后,提出了一种适用于含氧气环境的NO_(x)传感器定电压控制策略。A fully open nitrogen oxide(NO_(x))sensor test system based on LabVIEW and digital multimeters is designed to improve the accuracy of the yttria-stabilized zirconia solid-sate electrolyte-based amperometric NO_(x)sensor.The working principle of the NO_(x)sensor is analyzed,and the control strategy is optimized.Each functional module of the sensor is tested individually to achieve the optimized operation temperature and the limited output current characteristic curves of the main oxygen pump,auxiliary oxygen pump,and NO_(x)measuring pump.It is found that the sensor shows excellent saturized current platforms under limiting conditions and the limited current increases with working temperature.In addition,a linear relationship between the limited current and the NO_(x)concentration is observed under the constant-voltage mode in oxygen-containing atmosphere.A constant-voltage control strategy is further proposed for the NO_(x)sensor operating in the oxygen-containing environment.

关 键 词：氮氧化物传感器 电流型 钇稳定氧化锆 控制策略 极限电流 

分 类 号：TP212.2[自动化与计算机技术—检测技术与自动化装置]