CAJ | 학술논문

为了实现批量的氧传感器的高效下线检测，设计了一种基于LabVIEW的氧传感器检测系统。该方案采用按设定好空燃比变化规律循环的电控单元（ ECU）控制发动机运行，其产生的尾气用来同时检测一组氧传感器。LabVIEW获取ECU的空燃比变化规律同时控制单片机AD采样获得到的各氧传感器的输出信号，通过实时处理获得的数据将得到一系列的氧传感器性能参数。当判断所有参数测量完后，Lab-VIEW将自动停止测量过程。通过用户自定义且可标定的评价标准，软件将直接给出每只所测氧传感器的性能评价结果。实验结果表明：该系统可以准确快速地检测出氧传感器的各种性能指标，包括起燃激活时间、稀浓信号大小、稀浓响应速度等。
위료실현비량적양전감기적고효하선검측，설계료일충기우LabVIEW적양전감기검측계통。해방안채용안설정호공연비변화규률순배적전공단원（ ECU）공제발동궤운행，기산생적미기용래동시검측일조양전감기。LabVIEW획취ECU적공연비변화규률동시공제단편궤AD채양획득도적각양전감기적수출신호，통과실시처리획득적수거장득도일계렬적양전감기성능삼수。당판단소유삼수측량완후，Lab-VIEW장자동정지측량과정。통과용호자정의차가표정적평개표준，연건장직접급출매지소측양전감기적성능평개결과。실험결과표명：해계통가이준학쾌속지검측출양전감기적각충성능지표，포괄기연격활시간、희농신호대소、희농향응속도등。
In order to achieve the goal of high efficient inspection of oxygen sensor in production line,a kind of inspecting system for oxygen sensor is designed based on LabVIEW program system. The system detects a group of oxygen sensors via exhaust gaseous produced by engine which is controlled by ECU with preset running cycle process of changing air-fuel ratio. LabVIEW acquires ECU air-fuel ratio change rule and output signal of oxygen sensors at the same time,and these datas are processed simultaneously. With all the necessary performance parameters of the oxygen sensors are detected,the process of detecting will terminated by LabVIEW automatically. According to the criteria which can be calibrated set up by user,the software will present evaluation results of each oxygen sensor directly. Experimental results show that this system can inspect all the performance parameters accurately and rapidly,including the light-on time,thin and dense signal and response rate,etc.