基于LabVIEW的农药检测人员考试系统的设计

Design of examination system based on LabVIEW for pesticide detection staff

针对无纸化考试过程中存在考生替考及考场作弊行为频频出现的问题,采用LabVIEW技术以及单片机技术,完成监考端与考试端的设计,并应用于农药残留检测等相关专业知识的考试中。该系统不仅实现了传统无纸化考试的基本功能,还实现了无死角实时录像、拍照等功能,其中,单片机控制云台实现摄像头旋转。实验表明,该系统具有数据传输稳定、测试结果准确、考场认证性强等特性,达到了预期的设计目标。

In allusion to the frequently-occurring problems such as examinees' substitution and cheating during the paperless examination,the LabVIEW technology and single chip microcomputer technology are adopted to complete the design of the monitoring terminal and examination terminal,which are applied in examinations of pesticide residue detection and other related professional knowledge. The system can not only realize the basic functions of the traditional paperless examination,but also realize the functions of real-time video recording without blind angle and photographing. The single chip microcomputer is used to control the cloud platform for camera rotation. The experimental results show that the system has the characteristics of stable data transmission,accurate test results and strong examination room identification,which has achieved the expected design goals.