面向道路运输安全的TPMS关键技术的研究与实现

发布时间：2018-03-18 05:10

本文选题：TPMS　切入点：Android　出处：《中国海洋大学》2015年硕士论文　论文类型：学位论文

【摘要】：随着国民经济的快速发展,道路运输产业的规模得以快速提升,作为产业载体,汽车具有极其重要的地位,而面对越来越多的汽车,交通安全问题日益严峻。研究发现,每年因轮胎事故造成的交通问题日益增多,特别是对于爆胎和漏气造成的交通事故尤为严重,并且在发生爆胎事故时,人们很难及时的去处理。随着人们安全意识的不断提升和有关法律法规的出台,人们对于TPMS的关注越来越多。TPMS,全称Tire Pressure Monitoring System,即轮胎压力监测系统,主要用于保障驾驶员的安全,对汽车轮胎压力数据进行实时监测,并会在轮胎气压发生异常时进行报警和预警处理。目前TPMS研究主要分为直接式和间接式,其中直接式是依靠传感器直接读取轮胎气压数据,间接式则是通过比较轮胎转速进行的轮胎气压估计,但两种方式都是为了得到实时的气压数据,然后进行监控,以保障驾驶者的安全。本文所研究的直接式轮胎压力监测系统,通过安装在轮胎上的外置传感器以及蓝牙串口模块将气压数据发送至Android智能手机,并以移动终端显示的方式,对轮胎气压进行实时监测。由于传感器读取到的数据和实际轮胎气压计测量的数据存在一定的误差,本文通过回归分析法对传感器进行标定,然后将模型应用于终端系统。主要研究内容如下：首先,介绍了本文所使用的基础理论,包括TPMS架构和Android终端相关技术,例如蓝牙通信、极光推送、百度地图以及轻量级数据库技术等。其次,重点介绍了轮胎压力监测模块的总体设计方案,包括移动终端接收、解析、显示轮胎气压数据的具体过程。解决了数据编码、射频模式、数据格式、蓝牙通信以及传感器ID匹配等问题,并且最终以友好的终端界面显示实时的轮胎压力信息。再次,以具体应用环境为出发点,利用线性回归分析技术,对实验中的压力传感器进行标定,得到一种线性数据模型,并把这种模型应用到实际的终端系统中,充分保证终端系统显示数据的准确性,对道路运输安全起到至关重要的作用。还以实验的方式初步探究了轮胎载荷和压力及形变量之间的相关关系。最后详细设计了系统终端部分的整体架构、功能模块,阐述终端系统的各个子功能模块中系统界面的设计和相应功能的实现。通过本课题研究的TPMS,能够将实时的较为精确的轮胎压力数据发送到智能终端,实现实时监测功能,并且具有良好的用户交互性,同时在车联网方向具有一定的应用价值。
[Abstract]:With the rapid development of national economy, the scale of road transportation industry has been rapidly promoted. As an industrial carrier, automobile has an extremely important position. In the face of more and more cars, the traffic safety problem is becoming more and more serious. Traffic problems caused by tyre accidents are increasing every year, especially for those caused by tyre explosions and air leaks, and in the event of tyre explosions, It is very difficult for people to deal with it in time. With the continuous improvement of people's safety awareness and the promulgation of relevant laws and regulations, people pay more and more attention to Tire Pressure Monitoring system, or Tire pressure Monitoring system, which is mainly used to ensure the safety of drivers. The data of tire pressure are monitored in real time, and alarm and early warning are carried out in case of abnormal tire pressure. At present, the research of TPMS is mainly divided into direct type and indirect type, in which the direct type is to read tire pressure data directly by the sensor. The indirect method is to estimate the tire pressure by comparing the tire speed, but both methods are to get the real time pressure data, and then monitor to ensure the safety of the driver. The direct tire pressure monitoring system is studied in this paper. The air pressure data is sent to the Android smart phone by the external sensor installed on the tire and the Bluetooth serial port module, and displayed by the mobile terminal. The tire pressure is monitored in real time. Because there are some errors between the data read by the sensor and the data measured by the actual tire barometer, the sensor is calibrated by regression analysis. Then the model is applied to the terminal system. The main research contents are as follows: firstly, the basic theory used in this paper is introduced, including TPMS architecture and Android terminal related technologies, such as Bluetooth communication, aurora push, etc. Baidu map and lightweight database technology. Secondly, the overall design scheme of tire pressure monitoring module is introduced, including mobile terminal receiving, parsing and displaying the tire pressure data. RF mode, data format, Bluetooth communication and sensor ID matching, and finally display real-time tire pressure information with friendly terminal interface. A linear data model is obtained by calibrating the pressure sensor in the experiment, and the model is applied to the actual terminal system to ensure the accuracy of the display data of the terminal system. It also explores the correlation between tire load and pressure and shape variables. Finally, the whole structure and function module of the terminal part of the system are designed in detail. This paper expounds the design of the system interface and the realization of the corresponding functions in each sub-function module of the terminal system. Through the TPMSs studied in this paper, the real-time accurate tire pressure data can be sent to the intelligent terminal, and the real-time monitoring function can be realized. And has good user interaction, at the same time in the vehicle networking direction has certain application value.
【学位授予单位】：中国海洋大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TP311.52

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