基于单片机的多功能皮革性能指标检测仪开发

发布时间：2019-07-01 20:29

【摘要】：皮革的柔软性能、丰满性能、弹性性能，很难采用一种或者两种力学性能进行完整的描述，本课题开发一种新型皮革性能指标测试仪，客观的实现皮革性能指标的测定。该仪器包括机械部系统、运动控制系统以及检测系统组成。首先，根据皮革性能指标检测的运动要求，采用PROE5.0及AutoCAD2007作为设计平台，完成了该测量系统的本体设计、传感器夹持装置设计，为控制系统设计和检测系统设计提供了载体。其次，根据皮革性能指标检测的运动要求，开发了以STC89C52单片机为控制器，包括Leetro DMD402A步进电机及其驱动器以及精密电控位移台的运动控制系统。使用Keil uVision2作为程序设计的开发工具，开发了控制系统软件。由单片机发出脉冲信号PUL对步进电机进行转角控制，发出方向信号DIR对步进电机进行方向控制，完成步进电机的正转与反转控制以及加减速控制。这些运动用于实现皮革的顶伸性能、压缩性能、弯曲性能的测试。之后，完成了检测系统设计。该系统也包括硬件和应用程序两个部分。硬件结构组成主要包括单片机及其外围电路、光栅位移传感器以及压力传感器及与之配套的变送器等。应用程序设计部分利用Keil uVision2作为软件开发平台，实现数据的采集、处理。最后，完成了上述三个系统的融合，实现了三种不同类型的力学性能的测试，从而为客观评价皮革综合性能奠定了基础。实验表明，STC89C52单片机用于运动控制系统和数据采集及处理系统，具有程序设计便捷，开发成本低及可操作性强等优点，，便于现场检测要求。
[Abstract]:It is difficult to describe the softness, fullness and elasticity of leather by one or two kinds of mechanical properties. In this paper, a new leather performance index tester is developed to objectively determine the leather performance index. The instrument includes mechanical department system, motion control system and detection system. Firstly, according to the motion requirements of leather performance index detection, PROE5.0 and AutoCAD2007 are used as the design platform to complete the body design of the measurement system and the design of sensor clamping device, which provides a carrier for the design of control system and detection system. Secondly, according to the motion requirements of leather performance index detection, a motion control system based on STC89C52 single chip microcomputer is developed, which includes Leetro DMD402A stepping motor and its driver and precision electric displacement table. Using Keil uVision2 as the development tool of programming, the control system software is developed. The pulse signal PUL is sent out by the single chip microcomputer to control the rotation angle of the stepping motor, the direction signal DIR is sent out to control the direction of the stepping motor, and the forward and reverse control and acceleration and deceleration control of the stepping motor are completed. These movements are used to test the top extension, compression and bending properties of leather. After that, the design of the detection system is completed. The system also includes two parts: hardware and application. The hardware structure mainly includes single chip microcomputer and its peripheral circuit, grating displacement sensor, pressure sensor and the corresponding transmitter. In the application design part, Keil uVision2 is used as the software development platform to collect and process the data. Finally, the fusion of the above three systems is completed, and the tests of three different types of mechanical properties are realized, which lays a foundation for the objective evaluation of the comprehensive properties of leather. The experimental results show that STC89C52 single chip microcomputer is used in motion control system and data acquisition and processing system, which has the advantages of convenient program design, low development cost and strong maneuverability, and is convenient for field detection.
【学位授予单位】：陕西科技大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TP368.1;TP216

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