基于ARM的车门动能测试系统设计与实现

发布时间：2019-03-30 15:50

【摘要】：我国城市近几十年快速发展,大城市人口越来越集中,拥堵问题严重。通过大力修建地铁的方式有效缓解了城市的交通拥挤的状况,对城市的快速发展起了重要作用。但是在地铁运营过程中地铁屏蔽门、列车门时常出现安全问题,我们需要检测它们在运动过程中的动能等指标是否符合国家标准。为了解决屏蔽门、列车门系统的滑动门动能测试的问题,本文设计了一个基于ARM微控制器与无线传输的车门(滑动门)动能测试系统,首先使用ARM微控制器采集传感器的数据,然后使用无线的方式实时将数据传输至计算机端,实现了车门动能、速度、位移的测试及对应曲线在上位机的绘制。本文首先对车门动能测试系统测量原理进行了阐述,其中包括速度、位移、动能测量原理,并给出了它们的测量要求。然后根据这些要求,提出了本系统的设计方案。接着对本系统硬件电路和软件进行了介绍,在硬件设计方面,首先对主要器件进行了选型,然后从恩智浦公司的微控制器LPC1114、Nordic公司无线传输模块nRF24L01+、加速度计ADXL103、超声波传感器KS103等出发进行设计。在软件方面,以模块的方式具体介绍了各部分的程序设计流程,给出了程序流程图,着重提到了如何由加速度值及位移测量值获得车门动能指标的算法和计算过程。然后根据前面的工作绘制并焊接PCB,设计了车门动能测试系统的采集软件和及电脑端展示软件,实现了样机系统。最后,在现场对设计中的每个环节做了具体的测试,并修改了其中的一些问题,提高了系统的一些性能,满足了系统设计指标的要求。
[Abstract]:With the rapid development of Chinese cities in recent decades, the population of large cities becomes more and more concentrated and the congestion problem is serious. Through the construction of subway, the traffic congestion of the city is effectively alleviated, which plays an important role in the rapid development of the city. However, in the process of subway operation, there are often safety problems in shield doors and train doors, so we need to test whether the kinetic energy of them in the process of movement conforms to the national standards. In order to solve the problem of sliding door dynamic energy test of shielded door and train door system, a kinetic energy test system of door (sliding door) based on arm microcontroller and wireless transmission is designed in this paper. Firstly, the sensor data are collected by arm microcontroller. Then the data is transmitted to the computer in real-time by wireless mode, and the kinetic energy, velocity and displacement of the car door are measured and the corresponding curves are drawn in the upper computer. In this paper, the measurement principle of car door kinetic energy measurement system is described, including velocity, displacement and kinetic energy measurement principle, and their measurement requirements are given. Then, according to these requirements, the design scheme of the system is put forward. Then the hardware circuit and software of the system are introduced. In the aspect of hardware design, the main devices are selected firstly, and then the wireless transmission module nRF24L01 and accelerometer ADXL103, are selected from NXP microcontroller LPC1114,Nordic company. Ultrasonic sensor KS103 and so on set out to carry on the design. In the aspect of software, the program design process of each part is introduced in the way of module, the program flow chart is given, and the algorithm and calculation process of how to obtain the kinetic energy index of the car door from the acceleration value and the displacement measurement value are emphatically discussed. Then, according to the previous work drawing and welding PCB, the acquisition software and computer-end display software of the car door kinetic energy test system are designed, and the prototype system is realized. Finally, every link in the design is tested on the spot, and some of the problems are modified to improve the performance of the system and meet the requirements of the system design index.
【学位授予单位】：南京理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：U467.4;TP332

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