【正文】 the second step i。 no need network infrastructure, and no munication expense characteristic. Based on the abovesaid characteristics, WSN is widely used in agriculture. Such as, digital supervising system of Agriculture facility environment based on GPRS, remote field data acquisition system and researches on all kinds of WSN used on remote supervising of Agriculture, and also have some mature technologies and product. The advantages of all these Wireless Communication Technologies are high transmission speed, large amount of information, operation reliable and long distance transmission. But their mon shorting is high munication expense, so difficult to extended and used on sensing and controlling of Agriculture facilities. ZigBee is one of main technology of wireless sensor network, it is a rising wireless network technology which is of short space, low plicacy, low power consumption, low data rate and low cost. So an intelligent controller developed based on ZigBee was introduced in the paper. Wireless data collecting nodes based on ZigBee collect, preprocess and transfer data (soil temperature, leave temperature, light content, growth speed of plant, and water content of soil) to wireless intelligent controller through wireless network. Intelligence voice module provides realtime production direction like ventilation, bringing down temperature, humidification, Supplying Lighting to improve environment of greenhouse according to data information collected from all wirelessnodes.2. Materials and Methods. Hardware DesignThrough analyzing and paring existing distributed greenhouse control system, realtime data collecting and controlling hardware were used to acplish effective control of environmental factors of Greenhouse (soil temperature, leave temperature, light content, growth speed of plant, and water content of soil). The system can collect, process, display data of greenhouse independently and also has function of voice ftmction (shows in Fig. 1).Hardware design mainly contains the design of coordinator and endpoint of ZigBee wireless network. The function of endpoint is collecting and transferring data through wireless network. Coordinator takes charge of management of the whole network, voice alert, receiving, assembling and processing data.. Central Control BlockJN5139 is central control block. It is a low power, low cost wireless microcontroller suitable for , Jennet and ZigBee applications. The device integrates a 32bit RISC processor, with a fully pliant GHz transceiver, 192 kB of ROM, 96 kB of RAM, and a rich mixture of analogue and digital peripherals. The cost sensitive ROM/RAM architecture supports the storage of system software, including protocol stacks,routing tables and application code/data. An external flash memory is used to store application code that is boot loaded into internal RAM and executed at runtime. The wireless sensor network using JN5139 as central control block can be low cost, low power in batterypowered. ZigBee nodes can be divided into two kinds, coordinator andendpoint.. Sensor ModuleIn order to collect environment factors of greenhouse, soil temperature sensor, leave temperature sensor, soil water content sensor, light intensity sensor and culm length sensor were used in the system. All data of sensors were transformed to standard voltage signals and then processing and transferring by ZigBee controller. TWX displacement transducer bined with mechanicalstructure design was used on culm length sensor. Contact measurement method is used on TWX displacement transducer, high precision soft magnetic alloys linear displacement is sensing device. Its resolution is 1m, precision is %. The sensor is fit to measure the growth of plant culm. It has stable output and can avoid drift caused by vibrations. The work principle of culm length sensor shows in Figure 2. The whole structure contains a framework, sensor fixing parts, sensor, spring, radial iron and butterfly nuts.Fig. 1. Structure block diagramFig. 2. The method sketch of stem sensor of plant.. Voice ModuleTo meet the need of convenient application, a voice module is used in the system, it can remind user to control system timely, when indexes of greenhouse are in unmoral range. PM60 intelligent voice chip is made up of microcontroller and Flash RAM memory, it shows in Figure 3. It has parallel mode, has 8 segments of Voice Record/Playback in this mode. K1～K8 can trigger correspond voice segment, they are set in flowing edge or low level when programming. K1～K8 have pullup resistors inside and defensive over flowing design.3. Softwore of SystelSoftware design uses SDK (Software Develop Kits)。ZigBee, Greenhouse, Plant Physiological, Intelligent Voice Module.1. IntroductionKey最后再一次感謝所有在畢業(yè)設(shè)計(jì)中曾經(jīng)幫助過(guò)我的良師益友和同學(xué)！ 致謝人：2015年6月4日參考文獻(xiàn)[1]（第四版）［M］.北京:(5):2333[2] [M].北京:.:4556[3]（簡(jiǎn)明修訂版）[M].杭州:(4).:8890[4]［M］.北京:(3).:78123 [5][M].北京:電子出版社. 2013(4).:99178[6][M].北京：:5697[7]潘勇,管學(xué)奎,[J].電子測(cè)量技術(shù)，2010:5677[8][M].:212322[9][J].電子與自動(dòng)化. 2013(3):2527[10]鄭鋒,王巧芝,[J].農(nóng)機(jī)科技與信息. 2013.:6799 [11]路康,馬斌強(qiáng),劉美琪,[J].:4256[12][M].北京：電子工業(yè)出版社，2008.:124145 [13]何希才,[M].北京：機(jī)械工業(yè)出版社. 2014:7889[14][M].北京：:123223[15]Anon．Chipcon AS Smart RF CC2420 Preliminary Datasheet [Z]．[S．1．]：[16]Ernest . Measurement Systems: Application and Design [M].America: McGrawHILL BOOK .附錄A 英文文獻(xiàn)原文The Wireless Intelligent Controller ofGreenhouse Based on ZigBeeAbstract:其次，我要感謝幫助過(guò)我的同學(xué)，他們也為我解決了不少我不太明白的設(shè)計(jì)上的難題。從課題的選擇到設(shè)計(jì)的最終完成，薛老師都始終給予我細(xì)心的指導(dǎo)和不懈的支持。在此期間，我不僅學(xué)到了許多新的知識(shí)，而且也開(kāi)闊了視野，提高了自己的設(shè)計(jì)能力。想要在現(xiàn)實(shí)生活中得到推廣和應(yīng)用，必須針對(duì)實(shí)際應(yīng)用場(chǎng)合的需要，進(jìn)一步完成系統(tǒng)功能的程序。（2）設(shè)計(jì)采用蜂鳴器聲音報(bào)警，此提醒如果改為語(yǔ)音提醒模塊則會(huì)使設(shè)計(jì)更加智能化和人性化。 展望對(duì)于溫室大棚環(huán)境監(jiān)測(cè)系統(tǒng)在設(shè)計(jì)和硬件搭建過(guò)程中方案和細(xì)節(jié)尚顯不足，做一些改進(jìn)將會(huì)增加其實(shí)用性。采集端由DHT11進(jìn)行溫濕度的采集并且通過(guò)NRF24L01無(wú)線(xiàn)傳輸模塊傳輸?shù)浇邮斩?。在主機(jī)端可以對(duì)溫度和濕