15 research outputs found

    Design and Implementation of Intelligent Home Control System Based on Android and Arduino

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    作为时下最炙手可热的移动应用端操作系统,Android以其显著的开放性、便于开发的灵活性、能够与Google应用的无缝对接性及丰富的第三方软硬件; 资源等成为智能应用系统不可或缺的组成部分;Arduino单片机系统以其开源的电子原型平台、灵活便捷的设计和丰富的传感器资源等被广泛应用。其与Ja; va和C语言相类似的基于; Wiring/Processing的语言开发环境更是受到越来越多的电子爱好者和开发者的青睐。本文以移动手机安卓系统为无线控制终端,结合Ardui; no单片机系统,设计并实验仿真了一款基于Android与Arduino的智能家居控制系统,以控制; LED灯示例,通过网络http传输控制指令到Arduino单片机系统,Arduino根据所接收到的指令,控制不同的家居电器完成所要求的工作任务。; 仿真实验表明,文章所设计方法行之有效,可以灵活的运用到日常家居电器设备,提供了一种智能家居系统设计的新思路,具有易实现,应用广的特点。As one of the most sought-after mobile application terminal operating; system, Android has become an indispensable part of the intelligent; application system, because it has the features of definite openness,; flexibility for development, perfect connection with Google applications; and abundant third party software and hardware resources and so on.; Arduino MCU system is widely used in society because of its; characteristics of open source electronic prototype platform, flexible; and convenient design, rich sensor resources, etc. Moreover, its classes; Java and C language based on Wiring/Processing development environment; are becoming more and more popular among the electronics enthusiasts and; developers. Taking the mobile phone Android system as wireless control; terminal, and combining Arduino MCU system, an intelligent home control; system based on Android and Arduino is designed and implemented in this; paper. By controlling LED lamp samples, with the network HTTP; transmission control instructions sending to the Arduino MCU system, and; according to the received instructions, Arduino can control different; household electrical appliances to complete the required tasks.; Experiments show that the methods designed in this paper can be flexibly; applied to daily household appliances, such as, home appliance control,; security equipment, etc. This paper provides a new idea for the design; of intelligent home system, which is easy to implement and widely used.2015年度"福建省高校杰出青年科研人才培育计划"项目; 2015年福建省高等学校创新创业教育改革项目;; 2016年本科高校重大教育教学改革研究项目; 2016年省级互联网实验教学示范中心项目; 2016年福建省高等学校服务产业特色专业建设项

    农药污染场地修复过程中近地面大气气态污染物含量变化特征及影响因素

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    [目的]研究农药污染场地修复施工过程中大气中污染物的含量变化,揭示其主要影响因子和变化规律,为农药类污染场地修复过程中的大气二次污染防治提供科学依据。[方法]以典型农药化工类退役场地土壤修复工程为依托,基于对场地土壤污染和修复施工工程的综合分析,在整个施工期间,对场地大气进行采样检测,采用相关分析和回归分析等统计学方法,对场地大气中气态污染物的组成和含量变化及其影响因素等进行了研究。[结果]场地大气中主要气态污染物包括苯乙烯、甲苯、乙苯、二氟二氯甲烷、氯仿、1,4-二氯苯、1,3-二氯苯、氯代甲苯、环己烷、乙酸乙酯、2-丁酮和二硫化碳等挥发性有机污染物(VOCs)。场地大气气态污染物含量在修复后期(2014年6月至2015年1月)明显高于修复前期(2014年1—6月)。[结论]修复施工期内污染土壤的开挖量是影响污染物浓度变化的关键因子,阶段开挖土方量对污染物浓度变化的影响尤为显著,开挖土方量越大,污染物浓度越高;气温和风速也是影响污染物浓度变化的主要因素。气温越高,风速越小,污染物浓度越高

    Erosion Characteristics of Plots with Various Underlying Surfaces in Single Rainfall

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    在延安市燕沟流域试验区布设了裸地、荒草地和灌木地3个坡面径流小区,对次降雨雨量、历时、径流深、产沙量、入渗率等数据进行了定位观测,并运用SAS软件对不同下垫面径流小区次降雨的侵蚀特征等相关问题进行了分析研究。结果表明,无论降雨强度如何变化,3个小区的径流量、产沙量均呈依次降低趋势:灌木地<荒草地<裸地;而入渗率呈依次增大趋势:灌木地>荒草地>裸地。其径流量与降雨量之间存在着很好的相关关系;产沙量随降雨量的增大而增大,其中裸地产沙量增大最为显著;入渗率随着降雨量的增大有增加趋向,但雨强增大时,入渗率表现为降低趋势;产沙量与径流量存在较好的相关关系,相关系数最高达到0.928 4,荒草地小区产沙量与径流量的关系可用二次函数很好地描述

    Distribution Characteristics of Soil Organic Carbon and

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    对黄土丘陵区植被恢复中柳枝稷、长芒草和白羊草这3种典型草地土壤有机碳、微生物量碳以及团聚体中有机碳的含量变化和分布特征进行了研究。结果表明,土壤中有机碳、微生物量碳以及不同粒级团聚体中有机碳均集中分布在土壤的表层;不同草地类型下有机碳的含量大小顺序为:柳枝稷草地>长芒草草地>白羊草草地;相同土层深度土壤各粒级团聚体中有机碳的分布表现为2~1mm粒级团聚体中有机碳含量明显高于其它粒级中有机碳的含量;在3种典型草地中,柳枝稷草地土壤中有机碳含量和团聚体中有机碳含量高于长芒草和白羊草草地的含量,柳枝稷草地土壤微生物量碳的含量仅低于长芒草中的含量。A study was conducted to investigate the distribution of total soil organic carbon,soil microbialbiomass carbon and organic carbon in different size soil aggregates in three typical grasslands that were dominated by Panicum virgatum,Bothriochia ischaemum,Stipa bungeana in hilly-gully region on the LoessPlateau.The results showed that total soil organic carbon,soil microbial biomass carbon and organic carboncontent in soil aggregates was higher in the soil surface than in other layers.The organic carbon contents ofdifferent grasslands in a descending order were Panicum virgatum >Bothriochia ischaemum >Stipa bungeana.A clear relationship was found between the organic carbon contents and the sizes of soil aggregates.2~1mm aggregates had the highest soil carbon content.The total organic carbon content and organic carboncontent in soil aggregates in Panicum virgatum grassland were higher than those in Bothriochia ischaemumgrassland and Stipa bungeana grassland,while the microbial biomass carbon content was lower than that inBothriochia ischaemum but higher than that in Stipa bungeana grassland

    污染场地修复过程中挥发性有机物(VOCs)污染研究进展

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    近年来,我国污染场地修复工程项目数量快速增长,其中农药化工类污染场地修复过程中的空气二次污染问题受到广泛关注。针对污染场地修复施工过程中存在的挥发性有机物(VOCs)污染来源,提出科学有效的施工过程管理是切断二次污染排放源进入空气途径的主要手段,分析了我国现有施工管理技术与监管方面的不足,并对国内相关的监管措施与研究进展进行了回顾

    Distribution Characteristics of Soil Organic Carbon and

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    对黄土丘陵区植被恢复中柳枝稷、长芒草和白羊草这3种典型草地土壤有机碳、微生物量碳以及团聚体中有机碳的含量变化和分布特征进行了研究。结果表明,土壤中有机碳、微生物量碳以及不同粒级团聚体中有机碳均集中分布在土壤的表层;不同草地类型下有机碳的含量大小顺序为:柳枝稷草地>长芒草草地>白羊草草地;相同土层深度土壤各粒级团聚体中有机碳的分布表现为2~1mm粒级团聚体中有机碳含量明显高于其它粒级中有机碳的含量;在3种典型草地中,柳枝稷草地土壤中有机碳含量和团聚体中有机碳含量高于长芒草和白羊草草地的含量,柳枝稷草地土壤微生物量碳的含量仅低于长芒草中的含量。A study was conducted to investigate the distribution of total soil organic carbon,soil microbialbiomass carbon and organic carbon in different size soil aggregates in three typical grasslands that were dominated by Panicum virgatum,Bothriochia ischaemum,Stipa bungeana in hilly-gully region on the LoessPlateau.The results showed that total soil organic carbon,soil microbial biomass carbon and organic carboncontent in soil aggregates was higher in the soil surface than in other layers.The organic carbon contents ofdifferent grasslands in a descending order were Panicum virgatum >Bothriochia ischaemum >Stipa bungeana.A clear relationship was found between the organic carbon contents and the sizes of soil aggregates.2~1mm aggregates had the highest soil carbon content.The total organic carbon content and organic carboncontent in soil aggregates in Panicum virgatum grassland were higher than those in Bothriochia ischaemumgrassland and Stipa bungeana grassland,while the microbial biomass carbon content was lower than that inBothriochia ischaemum but higher than that in Stipa bungeana grassland

    高效分离Li及其同位素的MC-ICP-MS精确测定

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    为了高效地从地质/环境样品中分离纯化Li元素并进行Li同位素测定,经反复实验和改良发现:采用8 mL容积(树脂体积)离子交换柱,选取AG 50W-X12阳离子交换树脂,以0.5 mol/L HN03为淋洗液,过柱一次,并收集20~48 mL区间的淋洗液,即可一步实现Li的完全纯化分离。对于高盐样品,建议过柱两次确保Na/Li</p

    Portable low-power-dissipation tag used for real-time positioning system and positioning method based on tag

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    本发明公开了一种用于实时定位系统的便携式低功耗标签及其定位方法,该标签包括电源管理电路、数据处理控制电路、射频网络匹配电路、低噪声功率放大电路、第一射频收发通道转换电路、第二射频收发通道转换电路以及带通滤波电路。电源管理电路为整个标签系统进行供电。数据处理控制电路用于实现定位信息的处理;射频网络匹配电路用于实现定位信息交互;低噪声功率放大电路用于实现射频信号的功率放大;第一、第二射频收发通道转换电路用于实现射频发射、接收信号通道的转换;带通滤波电路用于实现射频信号的滤波处理。本发明功耗低、尺寸小,十分轻便,具有可穿戴性,方便定位人员携带,满足多场合的定位需求

    典型农药厂污染场地土壤中PAHs分布特征及来源分析

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    以某典型农药厂退役场地为例,对场地土壤中具有较强人体危害性的化合物PAHs含量、分布特征及来源进行分析。结果表明该场地土壤中PAHs最大检出深度达到6.0 m。在检出PAHs的土壤样品中强致癌物苯并(a)芘(Bap)平均含量为1.63 mg·kg-1,最高含量为8.83 mg·kg-1。检出PAHs的土壤样品中,60%为重度污染。随着深度的增加,高环芳烃含量及检出率均逐渐降低。0~1.2 m深度内环数≤3、4环及环数≥5的PAHs比例相当,主要单体为菲(Phe)、荧蒽(Fla)和芘(Pyr),1.2~6.0 m深度内环数≤3的PAHs所占比例最高,主要单体为萘(Nap)和2-甲基萘(2-Mnap)。特征化合物分子比例法分析表明,场地土壤中PAHs来源有2个方面:一是企业生产中使用石油产品过程中的泄漏、废弃物的燃烧等;二是场地上含有草、木、煤等垃圾杂物的燃烧。与场地原生产企业生产车间分布的对比分析结果表明,PAHs检出点位绝大部分位于原企业生产车间,表明土壤中PAHs的存在与原企业的生产活动有着较强的关联性
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