基于射频技术的预付费阶梯水表的研究

发布时间：2018-05-07 13:28

本文选题：智能水表 + 射频技术　；参考：《西北大学》2015年硕士论文

【摘要】：随着我国城镇居民生活水平的提高,生活用水的需求量也日益增加。但这种趋势与我国水资源实际储量逐年减少的趋势显得格格不入。随着国家“一户一表”工程和“阶梯收费”政策全面落地实施,标志着用水管理部门以价格为杠杆督促居民节约用水新征程的起步。为顺应国家的“阶梯收费”政策,在现有用水计量器具的基础之上开发具有阶梯计费功能的用水计量器具就有很强的针对性和实用性。本文就是在这样的背景下展开相关研究工作的。1、以传统的旋翼式多流束机械水表为基础,通过合理布局信号采集传感器的位置将基表的机械信号转换为便于处理的电信号,通过计数的方法来实现对用水量的计量。2、采用射频技术,以射频IC卡为信息载体完成水表与水表管理系统的信息交换。由于所采用的射频卡容量大而且工作频段高,因而用一张卡可以管理多块水表而且具有较强的抗干扰性。3、在硬件设计方面采用低功耗器件及低功耗设计技术,确保为水表提供电源的电池的工作寿命达到相关国家标准的要求。4、硬件设计方面是在现有预付费水表的基础之上增加时间计量模块来实现对阶梯收费时间的确定。采用双电源技术,确保在主电源故障时避免表内数据丢失和时钟计量偏差。5、采用B/S软件架构开发了相应的营业管理系统,具有功能强大、易于操作、人机交互界面友好等特点。
[Abstract]:With the improvement of living standards of urban residents in China, the demand for domestic water is increasing day by day. However, this trend is out of step with the decreasing trend of the actual reserves of water resources in China. With the implementation of the national "one household, one watch" project and the "ladder charge" policy, it marks the start of the new journey of water conservation urged by the water management department with price as the lever. In order to conform to the "ladder charge" policy of the country, it is very pertinent and practical to develop the water use metering apparatus with the function of ladder charging on the basis of the existing water metering instruments. In this paper, based on the traditional rotary-wing multi-flow beam mechanical water meter, the mechanical signal of the base table is converted into an electrical signal that is easy to process through the position of the sensor. The metering of water consumption is realized by counting method. The information exchange between water meter and water meter management system is completed by using radio frequency technology and radio frequency IC card as information carrier. Because of the large capacity and high frequency band of the radio frequency card, one card can manage many water meters and has strong anti-interference. In the aspect of hardware design, low-power devices and low-power design techniques are used. To ensure that the working life of the battery supplying power to the water meter meets the requirements of the relevant national standard. The hardware design is to add the time measurement module to the existing prepaid water meter to realize the determination of the step charge time. The double power technology is adopted to ensure that the data loss and clock metering deviation. 5. The corresponding business management system is developed by using the B / S software framework. It has the characteristics of powerful function, easy operation and friendly man-machine interface.
【学位授予单位】：西北大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TH814.2;TP391.44

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