甘肃省第十届“挑战杯”大学生课外学术科技作品竞赛作品英文写信的格式
城市绿地无线智能节水浇灌系统
摘 要
为了改变传统的不经济、不精准的、效率低下的城市绿地灌溉方式，同时城市绿地面积的不断增加使日益严峻的城市水资源短缺问题进一步恶化。因此，本课题提出一种城市绿地无线智能浇水系统，并给出了系统的网络体系结构，以及控制中心处收发节点（协调器节点）和绿地参数采集节点（传感器节点）的硬件和软件的设计；上位机交互软件设计。本设计采用卑躬屈膝的反义词Zigbee作为无线组网的关键技术，使得大面积城市绿地环境参数的获取在数据采集节点的控制下进行。在硬件设计方面，根据设计要求，选择CC2530作为采集系统的主控芯片，搭建硬件平台；在下位机软件设计方面，使用ZigBee协议栈组建星型网络，完成城市绿地系统的数据采集、处理与传输；在上位机软件方面采用职业介绍VB设计人机交互的显示、控制界面，根据数据采样时间显示绿地温、湿度参数，并根据显示值绘制变化曲线。采集节点可依据土壤含水量自动启闭电磁阀，也可以接受控制中心下发的指令实现对电磁阀的控制功能。
关键字：城市绿地；智能浇水；Zigbee三开头的成语技术；控制系统小儿退烧方法
Abstract
∙In order to change the traditional economy, accurate, low efficiency of urban green land irrigation methods, at the same time, the increasing urban green space area of the growing shortage of urban water resources further deterioration.This topic put forward a kind of urban green space, therefore, wireless intelligent watering system, and prents the system network architecture, as well as the control center transceiver node parameter collection node (coordinator node) and green (nsor nodes) the design of hardware and software;Upper machine interactive software design.This design USES the Zigbee as the key technology of wlan, the large area of urban green space environment parameter acquisition under the control of data acquisition node.In the aspect of hardware design, according to the design requirements, choo CC2530 as main control chip of acquisition system, building hardware platform;The next bit machine software design, the u of Zig
Bee protocol stack to form a star network, urban green space system of data acquisition, processing and transmission;In PC software using VB to design the man-machine interactive interface display, control, according to the data sampling time according to green space parameters of temperature, humidity, and according to the display value curve drawing.Acquisition node can be automatic on-off solenoid valve on the basis of soil water content, also can accept control center issued instructions to implement control functions of solenoid valve.
怎样测网速
∙Keywords：Urban green space;Intelligent watering;Zigbee technology;Control system
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