植物根系抗拉力学特性便携式测试系统  

Design of Portable Test System for Tensile Property of Plant Roots

作　　者：张云伟[1] 喻勇[1] 王大龙[2] 惠尚[2] 王彦钧 李龙[1] 

机构地区：[1]昆明理工大学信息工程与自动化学院,昆明650500 [2]昆明理工大学现代农业工程学院,昆明650500

出　　处：《农业机械学报》2014年第6期58-63,共6页Transactions of the Chinese Society for Agricultural Machinery

基　　金：国家自然科学基金资助项目(31060118)

摘　　要：针对传统的植物根系抗拉力学特性参数测量方式的不足,设计了一种在野外现场测量植物根系抗拉力学特性参数的便携测试系统。系统包括机械装置和电子测量两部分。机械装置由机架、根系夹持机构和传动系统组成,采用模块化设计,各部件可以快速拆装。电子测量部分由传感器、低功耗单片机数据采集系统和手持设备组成。手持设备基于Android平台开发,通过蓝牙模块与单片机数据采集系统通讯,是实现测量操作、输入以及结果显示输出的终端。试验结果表明,所设计的测试系统携带方便、测量准确,可测量得到根系的4个典型抗拉力学特性参数(最大抗拉力、抗拉强度、拉伸弹性模量、极限应变),显示其应力-应变关系曲线,查询历史数据,能够满足野外现场测量根系抗拉力学特性参数的各种要求。To overcome the shortage of traditional test method for tensile property parameters of plant root system, one portable measuring system used in filed work is designed to Obtain plant root system tensile property parameters. The system consists of two parts, mechanical device and electronic measuring part. The mechanical device is made up of rack, root holding mechanism and drive system. It adopts the building block design, whose parts can be disassembled quickly. The electronic measuring part is made of sensors, low power consumption MCU data acquisition system, and handheld device developed based on Android platform. It communicates with MCU data acquisition system via Bluetooth, as the terminal of operation, data input and the results display. The experiment results show that the measuring system is portable and accurate. It can get four classical tensile property parameters of root system from the measurement, maximum tensile resistance, tensile strength, modulus of elasticity for tension and ultimate strain. It can also show the stress-strain relationship curve, and inquiry historical data. This system can satisfy the requirements of measuring tensile property parameters of olant root system in the field work.

关 键 词：植物根系 力学特性 测试系统 便携式 

分 类 号：TH873[机械工程—仪器科学与技术] S183[机械工程—精密仪器及机械]