检索结果-南通市图书馆

作者： Daokun Ma qisheng ding Daoliang Li Linlin Zhao College of Information and Electric Engineering China Agriculture University School of Electrical Engineering and Automation Xuzhou Normal University

The Digital Wireless Monitoring System for water quality continuous measurement in aquaculture was developed based on IEEE802.15.4 standard and ***-parameter water quality node,temperature chain node,routing node and an on-site monitoring center were designed and ***-parameter water quality node was created for measurement of DO,EC,Water Lever and temperature in sea cucumber ponds.A temperature chain node is designed to monitor temperature profile change *** types of energy supply were adopted to achieve demand of indoor and outdoor application in aquaculture *** multi-parameter water quality node and temperature chain node are reduced funcition devices,which send measurement data to routing *** Routing node used to extend the range of continuous monitoring in aquaculture *** DWMS with six multi-parameter water quality nodes,two temperature chain nodes,three routing nodes and one on-site monitoring center was integrated and evaluated in Marine Aquaculture Demonstration Center,Dongying,Shangdong,*** monitoring data revealed that the system based on WSN was cost effective,easy-to-use,and reliable.

关键词： Aquaculture Water Quality Measurement WSN ZigBee

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

An Portable Intelligent Measurement Instrument for Dissolved Oxygen in Aquaculture

An Portable Intelligent Measurement Instrument for Dissolved...

引用

作者： Linlin Zhao Daoliang Li Daokun Ma qisheng ding College of Information and Electric Engineering China Agriculture University Xuzhou Normal University

In this paper,we present an intelligent portable instrument for measurement of dissolved oxygen（DO） in *** instrument has been designed and implemented with the technique of intelligent transducing and intelligent instrument *** is composed of DO intelligent transducer and DO intelligent handheld terminal,which both use MSP430 as *** DO intelligent transducer has the functions of plug-and-play,prone-to-change,automatic temperature *** the DO intelligent handheld terminal realizes well designed man-machine interface and convenient data processing *** instrument can automatically determine the stability of the DO probe which needs a few minutes to be stable after starting to *** experimental results of measuring DO with the instrument in aquaculture fields shows that this portable instrument is reliable for long periods of time to work and is easy-to-handle with compact size.

关键词： Aquaculture Dissolved Oxygen Intelligent Transducer Intelligent Handheld Terminal

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Design and Implementation of a Sensors Node Oriented Water Quality Monitoring in Aquaculture

Design and Implementation of a Sensors Node Oriented Water Q...

引用

作者： qisheng ding Daokun Ma Daoliang Li Linlin Zhao College of Information and Electric Engineering China Agriculture University School of Electrical Engineering and Automation Xuzhou Normal University

Online automatic monitoring of water quality is essential to intensive culture and it is the future trend in *** paper represented the design and implementation of a wireless sensors node,and its performance in an intensive *** sensors node is composed of two *** is data logger and wireless communication module based on IEEE802.15.4 standard and ZigBee,the other is three types of smart sensors for measurement of water quality in aquaculture,which are DO,EC and water *** smart sensors in the paper were designed based on *** Transducer Interface Module（STIM） was adopted to improve the performance of water quality *** compensation of DO and EC probe was described in detail,experiment and evaluation in laboratory and aquaculture pond revealed that the wireless sensor node developed was reliable and suitable for continuous monitoring water quality.

关键词： Aquaculture WSN Water Quality Measurement IEEE1451 Temperature Compensation

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

An Intelligent Four-Electrode Conductivity Sensor for Aquaculture

An Intelligent Four-Electrode Conductivity Sensor for Aquacu...

引用

Computer and Computing Technologies in Agriculture VI——6th IFIP WG 5.14 International Conference(CCTA2012) Part I

作者： Jiaran Zhang Daoliang Li Cong Wang qisheng ding China-EU Center for Information and Communication Technologies in Agriculture of China Agriculture University Beijing Engineering & Technology Research Center for Internet of Things in Agriculture Key Laboratory of Agricultural Information Acquisition Technology Ministry of Agriculture Jiangsu Normal University

Conductivity is regard as a key technical parameter in modern intensive fish farming managementThe water conductivity sensors are sophisticated devices used in the aquaculture monitoring field to understand the effects of climate changes on fish pondsIn this paper a new four-electrode smart sensor is proposed for water conductivity measurements of aquaculture monitoringThe main advantages of these sensors include a high precision,a good stability and an intrinsic capability to minimize errors caused by polarizationA temperature sensor is also included in the system to measure the water temperature and,thus,compensate the water-conductivity temperature dependenceThe prototype developed is appropriate for conductivity measurement in the range of 0-50mS/cm,0-40 °CA cure relationship was found between the out-put value of each standard solution measured by the sensor and the electric conductivity concentration.

关键词： four-electrode water-conductivity intelligent sensor

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

我国水泥生产主要工艺与装备的技术进步

引用

硅酸盐通报 2005年第5期24卷 68-72页

作者：徐宁丁奇生合肥水泥研究设计院合肥230051

在我国,由于经济技术水平、资源分布、交通运输条件等原因,不仅发展了许多种形式的水泥生产工艺与装备,而且每种形式的水泥生产工艺与装备都发展了多种规模的生产线。随着我国经济技术水平的不断提高,交通运输条件的不断改善,我国水泥... 详细信息

在我国,由于经济技术水平、资源分布、交通运输条件等原因,不仅发展了许多种形式的水泥生产工艺与装备,而且每种形式的水泥生产工艺与装备都发展了多种规模的生产线。随着我国经济技术水平的不断提高,交通运输条件的不断改善,我国水泥工业的生产工艺与装备越来越先进,单条生产线的生产能力越来越大,自动化水平越来越高,环保效果越来越好,各项技术经济指标越来越理想,正逐渐顺应着世界水泥工业新型干法水泥的发展潮流——大型化、信息化、节能、环保、生态化发展。

关键词：水泥生产工艺与装备技术进步水泥生产工艺装备交通运输条件技术经济指标经济技术水泥工业环保效果

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Dissolved Oxygen Prediction in Apostichopus Japonicus Aquaculture Ponds by BP Neural Network and AR Model

Dissolved Oxygen Prediction in Apostichopus Japonicus Aquacu...

引用

作者： Feifei Li Daoliang Li Yaoguang Wei Daokun Ma qisheng ding College of Information and Electrical Engineering China Agricultural University

In the process of rearing sea cucumber Apostichopus japonicus,Dissolved Oxygen（DO） concentration adjustment and control is the key point to sea cucumber *** paper proposed both traditional time series method（auto regressive（AR） model） and BP neural network for the DO concentration forecasting in sea cucumber aquaculture *** aim to make four different interval length（0.5 hour,1 hour and 2 hours） prediction of DO concentration in sea cucumber breeding *** DO concentration is the result of many factors,such as water temperature,solar radiation,water level,air temperature,PH and EC value of water,*** different factors have complicated nonlinear relations which are difficult to describe with simple mathematical formula.A BP neural network using water temperature,past time DO concentration and EC value as inputs to make 2 hours ahead DO concentration prediction was constructed in this *** model was also employed to forecast the DO *** show that predictive values of both models are accurate according to the observed *** AR model has better performance in short interval prediction and BP neural network does better in longer interval *** models demonstrated potential for use as an intensive aquaculture management and forecasting tool to predict the near-term DO concentrations.

关键词： DO Concentration Prediction BP Neural Network AR Model Sea Cucumber

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

汽缸套电镀铬厚度精密测控系统设计

引用

农业机械学报 2005年第6期36卷 75-78页

作者：吕钊钦丁其胜尹克荣山东农业大学机电工程学院徐州师范大学工学院

汽缸套电镀层厚度精密测控系统采用模块化设计,以89C52单片机为控制芯片,电流分流器为信号采集元件。6个分流器分别采集6个汽缸套的电镀电压信号,经直流放大电路放大后,由多路模拟转换开关分时选通各汽缸套的电压信号,送入A/D转换电路,... 详细信息

汽缸套电镀层厚度精密测控系统采用模块化设计,以89C52单片机为控制芯片,电流分流器为信号采集元件。6个分流器分别采集6个汽缸套的电镀电压信号,经直流放大电路放大后,由多路模拟转换开关分时选通各汽缸套的电压信号,送入A/D转换电路,再将转变后的数字量送入单片机进行计算处理,实现了多汽缸套同时电镀时镀层厚度的单独测控,保证了电镀质量。试验结果表明,该系统测控精度高,多缸套电镀层厚度尺寸的一致性好。

关键词：汽缸套电镀铬镀层厚度精密测控系统系统设计单片机技术

来源：

维普期刊数据库

同方期刊数据库评论