无线表决系统的设计

文档编号:JD588 附原理图,文档字数:21664,页数:81

 摘  要

目前，在机关、学校和企事业单位会议中，经常要对某些议案进行表决，然而国内投票表决还多使用有线表决器，有线表决器有很多不足之处：如果会议要在不同地点举行，同样需要表决系统，那么工作人员就要在不同的会场重新布置繁琐的线路，这样就很容易出故障，不仅给工作人员带来了极大的不便，而且也浪费了时间。
随着无线局域网的发展，无线技术自身的优势不断在应用中体现出来，这时无线表决技术也日趋成熟与完善起来。相较与有线表决系统纵使会场的改变，工作人员也无需安装布线，只要配置足够的无线表决器既可，而且也不用改变会场原始的装修风格，既节省了人力，也节省了时间。
本文是以MSP430F123单片机和无线收发芯片nRF905为核心，研制的一种无线表决系统,MP430F123是FLASH型单片机，具有超低功耗的性能，适合用在各种极低功率消耗的场合，具有一定的技术特点。采用nRF905作为收发模块，制定了适合无线表决器系统的通信协议并分析了整个通信数据的收发过程最后在理论分析的基础上，给出了具体的硬件设计和软件设计。经实践证实，该系统具有功耗低，功能强，可靠性强和使用方便的特点，具有较高的推广和应用价值。

关键词：无线表决；MSP430单片机 ；nRF905芯片；低功耗

ABSTRACT

At present, agencies, schools and enterprises and institutions meeting, often have to vote for certain, however, vote on more domestic use of the voting machine cable, Cable voting machine has many shortcomings: If the meeting to be held in different locations, we need to vote on the same system, the staff will be meeting in different lines of re-arrangement of red tape, so you can easily go wrong, not only to the staff brought a great deal of inconvenience, but also is a waste of time.
    With the development of wireless local area network, wireless technology, the advantages of its own constantly reflected in the application, when the wireless voting technology are becoming increasingly mature and perfect them. Even though the venue changes, staff also do not need to install wiring, so long as adequate to carry the wireless device can vote, but also do not have to change the venue of the decoration style of the original, saving manpower and time saving.
     This article is based on MSP430F123 single-chip and wireless transceiver chip nRF905 at the core, the development of a wireless voting system, MP430F123 is FLASH-based microcontroller, with the performance of ultra-low power, suitable for use in a variety of occasions, very low power consumption with certain technical characteristics. NRF905 used as a transceiver module, developed a voting machine for a wireless communication protocol and network analysis of the whole process of communication to send and receive data, the last in the basis of theoretical analysis, are given specific hardware design and software design. Confirmed by practice, the system has low power consumption, functionality, and reliability and user-friendly features, has a higher value of the promotion and application.

Key words：wireless voting; MSP430F123 single-chip; nRF905; low power
          
   目  录

1 绪论 1
1.1无线表决系统的现状 1
1.2无线表决系统的功能 1
1.1 设计思路 2
2  系统的组成和原理 3
2.1系统的组成 3
2.2系统的原理 3
3 无线表决系统的硬件设计 4
3.1主控硬件设计 4
3.2接口电路部分 16
4  无线表决系统的软件设计 25
4.1单片机的编程语言 25
4.2  Visual Basic 语言开发环境 27
4.3系统程序 30
结  论 38
参考文献 39
附   录 40
谢    辞 74

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