【作者】 郭斌；

【导师】 张太红； 杨信廷；

【作者基本信息】 新疆农业大学 ， 农业机械化工程， 2010， 硕士

【摘要】 Zigbee技术是一种新的短距离无线通信技术,它具有成本低、体积小、功耗低等特点。随着半导体技术、微系统技术、通信技术和计算机技术的飞速发展,Zigbee技术在自动控制领域、计算机领域、无线通信领域的应用得到了极大的关注和重视。目前,随着我国社会经济的发展和人民生活水平的日益提高,消费者对果蔬农产品的鲜度、质量和安全提出了更高的要求。这就需要一个完整的冷链监测环境系统去解决新鲜果蔬的保鲜、保质和保证安全性的问题。但是目前冷链运输过程是整个冷链监测的薄弱环节。针对此种情形,本文结合传感器技术与Zigbee无线通信技术,设计了果蔬冷链车载环境信息监测系统。主要内容如下：(1)综述了目前国内外Zigbee技术应用领域及其系统的应用方案,在此基础上对应用于冷链车载监测环境的传感器进行设备选型。(2)设计并实现了基于温湿度、乙烯传感器的环境信息的采集模块和汇聚模块,组建了用于车载环境监测信息传递的基于Zigbee技术的无线传感器网络。(3)基于.NET平台,采用C#语言开发车载服务器软件,实现了基于Zigbee技术的冷藏车厢内环境信息的采集与监测。(4)结合果蔬类农产品的特点,在真实的运输环境下进行了数据接收正确率试验,并对温湿度、乙烯环境信息采集模块在冷藏车厢内不同的位置、不同的温度下的通信情况进行了比较分析。实际应用结果表明,本系统具有成本低、可靠性较高等特点,可以方便地应用于冷链运输的过程中进行环境信息的采集与监测。样机运行稳定可靠,达到了预期的设计目标。更多还原

【Abstract】 Zigbee is an emerging short-rang wireless network technology with low cost, small size and low power consumption. With the rapid development of semiconductor technology, micro-system technology, communication technology, Zigbee has been paid great concern and attention in the areas of automatic control, computer and wireless communication.Today, with the social economic development and rising living standards of China, consumers has higher requirement on fresh, quality and safety of vegetable and fruit products. They require an cold-chain environmental monitoring system during transporting, which is still under developing now. In such cases, the cold-chain monitoring system during transporting was designed by combination of sensor technology and wireless communication technology based on Zigbee. This paper is made up of the following parts:(1)The area of Zigbee technolgy and its system applications have been reviewed. On this basis, the sensors applied in the cold-chain monitoring system is selected.(2)The modules of sink node and collecting envorinment information for temperature and humidity, ethylene were designed and implemented. The wireless sensor network which based on Zigbee is built for monitoring the environment to the cab of cold-chain vhicle.(3)The software on vehicle server was developed by C# language, which realized collecting and monitoring the environment in the cab of cold-chain vehicle.(4)The experiment of Packet Right Receive is made by combining the characteristics of fruit and vegetable in real environment during transporting, and the communication quality of the module collecting envorinment information of temperature and humidity, ethylene is analyzed under different position and temperature.The results show the system is low cost and high reliablility, which can be easily applied to cold-chain environmental information collection and monitoring during the transporting. The prototype achieves the expected goals.更多还原