蝼蛄挖掘运动与挖掘力同步采集系统  

A Synchronous Acquisition System of the Digging Motion and Force of Mole Cricket

作　　者：张琰[1] 张鹏涛[1] 张凯凯[1] 张峻霞[1] 

机构地区：[1]天津市轻工与食品工程机械装备集成设计与在线监控重点实验室,天津科技大学机械工程学院,天津300222

出　　处：《天津科技大学学报》2017年第3期58-61,共4页Journal of Tianjin University of Science & Technology

基　　金：国家自然科学基金青年基金资助项目(51405341);天津市应用基础与前沿技术研究计划项目(15JCYBJC19300)

摘　　要：为研究蝼蛄的高效挖掘与其挖掘动作规律和挖掘力作用形式间的关系,提出一种蝼蛄挖掘运动与挖掘力的同步采集系统,可以实现对蝼蛄挖掘时的力学数据和图像数据的同步采集.其中,基于蝼蛄扩张挤压土壤的挖掘特点设计的力学测试平台可实现对蝼蛄挖掘过程中前足爪趾的扩张力的实时采集;同步触发模块可实现高速图像采集与挖掘力数据采集同时触发;基于LabVIEW设计的上位机控制软件可实现数据采集、标定及回放等功能.对实验样本的运动及力学数据采集结果显示,其前足夹角的最大值为47.4°,最大平均挖掘力为0.84,N.本系统可有效获取蝼蛄前足的运动及动力学数据,为进一步研究其挖掘作用机理提供了设备保障.The mole cricket＇s high-efficiency of excavating is associated with its excavating motion and mode of digging force. In order to study the relation between them, this paper presents a testing system, which can synchronously capture the motion image and record the digging force while the mole cricket is working. The system includes a mechanical testing plat- form, a software control system, and a synchronous trigger system. The mechanical testing platform was designed according to the expansion-extrusion characteristics of mole cricket excavating, so the real-time collection of the expansionary force ot the foreleg claw can be realized. The synchronous trigger module can conduct high-speed image acquisition and data re- cording simultaneously. The software control system was composed by using LabVIEW, which can achieve data acquisition, calibration and playback. A verification test of excavation shows that the largest included angle between two forelegs is 47.4°, and the relative average digging force is about 0.84 N. The proposed system is effective and reliable in image acquisition and data recording, which can provide some reference for the further study on the mechanism of mole cricket＇s excavation.

关 键 词：实验生物学 蝼蛄 挖掘力 运动力学 LABVIEW 同步采集 

分 类 号：TB17[生物学—生物工程]