Design of Distributed Long Distance Multi-parameters Environment Detecting System Based on ARM

随着我国经济发展，社会进步和人们环保意识的提高，环境质量的问题越来越为公众所注意。但是我国环境监测的发展还远不能满足环境监测的要求，监测仪器的质量参差不齐、功能不全。如何进一步提高监测水平，多元化监测手段，以及对环境污染状况做出科学的评价是当前环境监测工作面临的首要问题。 本文致力于一种分布式远程多参数环境监测系统的设计，综合运用嵌入式技术、传感器技术、自动检测技术、通信技术、网络技术和微型计算机技术，实现对多种环境参数的低成本分布式监测管理。本文研究的内容主要包括： 1.分析了当前国内环境监测仪器发展的现状，针对当前的情况，提出了一 种分布式远程多参数环境监测系统的设计方案。按照方案的...With the development of economy, advancement of the society and improvement of people’s environment protection consciousness, the problem of environment quality is more and more concerned by the public. However, the development of environment detecting can not meet the environment detecting requirements, most of them has low quality and less functions. The major problems that environment detecting...学位：工学硕士院系专业：物理与机电工程学院机电工程系_精密仪器及机械学号：20042900

Design of multi-parameters detecting instrument based on ARM and its network accession

本文提出一种基于ARM芯片的多参数检测仪的设计方案及其网络接入方法。利用S3C44BOX和uClinux控制多个参数的采集、存储和显示,通过以太网控制器实现仪器的网络通信。介绍了参数采集模块、参数处理和存储模块、显示控制模块、以太网接入模块的设计和系统软件结构。In this paper, a multi-parameters detecting instrument designed based on ARM and its network accession is introduced. In the system, S3C44B0X and uClinux were used in multi-parameters collecting, storing, and displaying, realizing the network communication by ethernet controller. At the same time, the design of the parameter collecting, processing and storage, displaying and controlling modules and the structure of the software are also introduced.厦门大学科技创新计划资助项

A Portable Environment Parameters Detector Designed Based on MCU AT89C52

本文设计研究了一种便携式环境参数检测仪。该仪器以AT89C52单片机为核心,选用相应的传感器并设计了采集电路,实现对温度、湿度和CO浓度的检测,可显示、查询相关参数,实现人机交互功能;湿度查表子程序中,把划分的湿度小区间视作线性区间,简化MCU计算,提高了系统工作效率。In this paper,a portable environment parameters detector was designed.It mainlydesigned with the adoption of the MCU AT89C52 together with special sensor. It can detect thetemperature, humidity and CO concentration by designing the proper acquisition circuit and itcan also work interactively when displaying, and requesting relative data. To improve the sys-tem's performance, the linearization method was utilized for those small space intervals onthe humidity look-up data designing to simplify the MCU processing.厦门大学科技创新项目(项目编号:20041015

Realization analysis of temperature and humidity distributed monitoring system of Internet

传统的温湿度监控系统建设方式已经无法满足其实际发展需求，相关部门需要积极应用现代化分布式的监控方式，文章通过对互联网温湿度分布式监控系统软硬件的设计，进而对监控中心与软件进行设计，创新设计方式，提高系统的运行质量，优化工作机制。The construction methods of traditional temperature and humidity monitoring system has been unable to meet its actual development needs, the relevant departments need to actively apply the modern distributed monitoring methods. This paper designs the hardware and software of temperature and humidity distributed monitoring system of Internet, and then designs the monitoring center and software, innovates the design method, so as to improve the running quality of the system and optimize the working mechanism

CPLD Realization of Embedded System Peripheral I/O Interface

为简化PCB布板,增强系统功能,提高系统的速度、抗干扰性、可靠性,提出一种用Altera公司CPLD芯片EPM7128S实现MCU外围接口电路的方法.在环境监测仪的MCU外围接口电路中,根据其功能结构与宏单元特点,利用VerilogHDL硬件描述语言和MAXplus-II设计工具软件,在单片CPLD上设计了MCU与A/D转换芯片、Flash Mem-ory、LCD及键盘4个模块的接口电路.对各个模块进行了编译、综合和仿真.实验表明,在一片CPLD芯片EPM7128S上,可实现多种接口功能,简化接口硬件连接,提高译码速度,编程方便灵活.In this paper,a realization of embedded system peripheral I/O interface based on Altera CPLD EPM7218S is proposed.The CPLD is used for simplifying PCB layout,enhancing system function,improving system's speed,anti-jamming and reliability.In the instrument design for detecting environment parameter,four interface circuit module are realized in a single CPLD which based on EPM7128's function structure and macrocell feature.Four module are MCU and A/D chip、MCU and Flash Memory、MCU and LCD、MCU and keyboard.Each module has been programmed 、synthesized and emulated.By experiment,the result indicate in a EMP7128S it can achieve several interface functions,make hardware interface connection facility,improve coding speed,make program more convenient.厦门大学科技创新项目(20041015)资

松嫩平原苏打盐渍土区不同潜水埋深下羊草的光合特征

通过人工控制地下水位模拟试验,研究了不同潜水埋深下羊草净光合速率和蒸腾速率。结果表明地下潜水埋深直接影响羊草的正常生理活动。潜水埋深在1.0—2.5m之间,潜水埋深越浅,羊草表现为净光合速率和蒸腾速率越高;随着潜水埋深的增加,羊草净光合速率和蒸腾速率减小,生理活动下降。不同月份羊草净光合速率和蒸腾速率与潜水埋深呈幂函数关系,不同时间羊草净光合速率和蒸腾速率与潜水埋深呈幂函数、指数函数和对数函数关系,相关系数均在0.90以上,因此可以用函数方程来估算不同潜水埋深下的羊草净光合速率和蒸腾速率。结果为松嫩平原苏打盐渍土区植被恢复与环境保护提供科学依据