基于Android系统的车辆管理手持机设计

发布时间：2018-11-11 19:32

【摘要】：随着国内ETC应用规模的不断扩大,市场迫切需要一款具有良好的行业适应性和用户友好性的手持机产品。现有市场上的手持机产品多以WinCE、Linux操作系统为主。这些手持机已经无法适应现在市场需求的变化和应用软件的多样化要求。同时,现有手持机大多最低工作温度在-10°C左右,无法满足我国北方冬季的室外使用需求。在加油站使用场景,或者危险品运输使用场景中,目前常见的手持机都无法满足防爆要求,不能使用。针对现有手持机产品的上述问题,经过对国内外手持机产品现状和具体市场需求的调研,设计了一款手持机。该手持机从硬件、软件和结构材质方面都进行了全新设计。硬件设计方面针对硬件对Android系统的支持、适应-20°C~55°C的需求进行元器件选型。选用了工业级的Cortex-A9双核处理器为核心的硬件平台。机体结构、电路和PCB设计中使用符合国标本质安全Ex(ib)IIAT3标准的设计方法,解决了产品在有防爆要求的环境中使用的问题。软件设计重点在于在引进目前主流的Android操作系统,解决原生Android操作系统没有RFID相关射频设备相关框架的问题。通过在下层的Linux内核之上增加一个独立运行的通用服务平台软件USP的方式,避免了对Android系统进行修改和定制,最终实现Android上层应用软件对底层硬件的操作和访问。本设计所述的手持机是按照平台化思想设计的产品,在解决了智能交通行业需求的同时,形成了稳定可靠的全新工业级硬件平台,软件方面实现了RFID操作相关软件与Android系统的整合,为后续应用层APP开发铺平了道路。在此设计基础上研发新产品,开发新应用都变得非常容易。
[Abstract]:With the continuous expansion of domestic ETC application scale, the market urgently needs a handheld machine product with good industry adaptability and user-friendliness. The existing market for handheld products to the WinCE,Linux operating system is the main. These handsets have been unable to adapt to the current changes in market demand and the diversification of applications. At the same time, the minimum operating temperature of most handsets is about -10 掳C, which can not meet the outdoor demand in winter in northern China. In the scene of gas station or transportation of dangerous goods, the common handheld machine can not meet the requirements of explosion protection and can not be used. Aiming at the above problems, a handheld machine is designed by investigating the present situation and market demand of domestic and foreign handsets. The handheld is designed in terms of hardware, software and structural materials. In the aspect of hardware design, according to the support of hardware to Android system, the selection of components is carried out according to the requirement of -20 掳C and 55 掳C. The industrial Cortex-A9 dual core processor is chosen as the core hardware platform. In the design of airframe, circuit and PCB, the design method which accords with the essential safety Ex (ib) IIAT3 standard of national standard is used to solve the problem of using the product in the environment with explosion-proof requirements. The focus of software design is to introduce the current mainstream Android operating system to solve the problem that native Android operating system has no RFID related RF device related framework. By adding an independent running general service platform software USP to the lower Linux kernel, the modification and customization of the Android system is avoided, and the operation and access to the underlying hardware of the Android upper application software is realized. The handheld machine described in this design is a product designed according to the thought of platform. It not only solves the needs of the intelligent transportation industry, but also forms a stable and reliable new industrial hardware platform. In the aspect of software, the integration of RFID operation related software and Android system is realized, which paves the way for the subsequent application layer APP development. It is very easy to develop new products and applications on the basis of this design.
【学位授予单位】：天津大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U495;TP316

【相似文献】