Research and development of the real time remote monitoring control system of hybrid electric vehicles

This paper develops a vehicle carried remote data acquisition terminal based on GPS/GPRS integrated DTU(data transfer unit) and CAN Bus data acquisition module, and built a parameter remote monitoring system of HEV with GPRS and Internet. By using PIC18F4580 with built in CAN control module and industrial DTU MD610G, we transmitted the parameter data and GPS information of the HEV(Hybrid Electric Vehicle) terminals to the remote data control center through GPRS(General Packet Radio Service) and INTERNET. Taking VC++ as the development tool, we programmed a monitoring software of data exchanging, data processing and monitoring. The software also has the function of CANoe data playbacking and strengthened the system versatility. Eventually, the parameter remote monitoring system of HEV is developed. The experiment results show that the system works well.     

Development of the remote data supervisory system of the hybrid electric vehicle

Taking the hybrid electric vehicle as the investigation subject, this paper studies the remote data acquisition, supervisory control and redisplay system of the hybrid electric vehicle fault diagnosis. The system gathers the simulate CAN BUS data through serial ports by the data acquisition device and send data to the remote web servers by the GPRS wireless communication module. For the demands and features, the paper makes the module selection and design the hardware of lower computer ,and the software on the host computer and lower computer. It takes several notebooks as the simulate vehicle date emission source to make an experiment, achieving the function of wireless data transfer, data acquisition, supervisory, redisplay for multi hybrid electric vehicles at the same time, and protocol setting up. Especially the function of wireless data transfer and protocol setting up, make a big progress on the common use and convenience of fault diagnosis system.     

The Electric Control System of Mechanical Transmission Test-bed With Mechanical Closed Cycle And Electric Colsed Cycle

This paper presented the principle and combinations of the mechanical transimssion test-bed with mechanical closed cycle and electric closed cycle. This system is composed of variable velocity driver, motor, generator, inverter and computer. It can be used both in mechanical closed cycle test-bed and electric ciooed cycle test-bed. The test-bed can keep a realting monitoring over the system and control the rotational speed and torque by computer. It can also simulate the real work condition of the test and to do the test. In this paper,the diminishable magnetization velocity modulation,invertiable control,the test data and curve,and the inverting efficiency as well as control scheme and presented.     

Design of Data Acquisition System for Vehicle Based on CAN Bus

To the question that a meter is correspond with a set of lead and a sensor,this paper presents a design of data acquisition system for vehicle based on CAN bus.In this way,the combinatorial instrument is only connected by a bus unit.Author introduces the data acquisition structure chart and the CAN interface,analyzes the software by program flow chart,and shows it's application for vehicle virtual instrument.A method of calculating vehicle speed,engine rotate speed and the course of development mileage are also given.     

Design of Testing System for ABS Test-bed

This paper discusses the structure, design and key techniques of testing system, and expounds the design and development of hardware and software based on virtual instrument technology. The design of hardware includes signal conditioning module and data acquisition module. The design of software includes interface program and upper layer program. Combining the hardware and software effectively, a testing system for ABS test-bed is set up, which has multifunctions of developing, debugging, inspecting and performance valuing to ABS. Having crucial meaning in engineering, the development of this testing system will make ABS tested in the lab mainly, thus improve the security and make the test more economical.     

Techniques of Dynamic Mesh in the CFD Transient Analysis of an Engine

Four techniques of dynamic mesh are Spring-based Smoothing, Dynamic Layering, Local Remeshing and the ALE method in the CFD transient simulation of engine. Based on those techniques, The authors analyze the improved measure of technique of dynamic mesh in the CFD transient analysis of the engine and propose the combined technique of dynamic mesh based on the finite volume method which is appropriate for. The CFD transient simulation of engine. At last, the 2D dynamic mesh method is applied to the typical pent-roof engine and the paper simulates the transient 3-D flow field at the tangent inlet of engine by applying the combined technique of dynamic mesh based on the finite volume method. The result of the simulation agrees well with experiment.     

Data Collection and Control Discuss of GPS Technique and Its Application in Landslides Monitoring

Water level has risen considerably since the impounding of the Three-Gorges Reservoir in year 2003 and that might cause serious geologic hazards, including landslides. Primarily using GPS technique, the landslides wireless monitoring in the Three-Gorges Reservoir is developed in rapidnly. To collect data and monitor in engineering more rational, the system model of GPS technique and its application in landslides monitoring are analyzed. Focusing on the data collection in monitoring, the authors discuss the method of embedding control in the monitoring model. By connecting the character of the monitoring system and landslides, the control signal is produced. At last, the experiment is performed with analogy software in monitoring system including control. The experiment indicates that the control signal is reasonable and valid. In actual engineering, this method is made progress.     

Design of networking condition monitoring andfault diagnosis for wind turbine transmission system

In order to solve the incipient fault diagnose problem of the transmission system, a networking condition monitoring and failure diagnosis system based on B/S and C/S hybrid architecture for wind turbine transmission system is designed in the paper. Firstly, the paper analyzes the demands of condition monitoring and fault diagnosis system for wind turbine transmission system, and designs its overall framework and function modules. Then, combining with the data acquisition equipment, by the .NET and SQL Server platform, the paper designs condition monitoring and failure diagnosis system for wind turbine transmission system, which includes the functions of networking data acquisition, remote condition monitoring, signal analysis, fault diagnosis and database as well. The system has been successfully applied to a condition monitoring and fault diagnosis of wind turbine transmission system.     

State and Prospects of Diesel Engine Fault Diagnosis Technique

As a kind of complex power machinery, diesel engine is being paid more and more attention to its condition monitoring and fault diagnosis technology. In the fault diagnosis field of diesel engine, the technique of signal process, character abstraction and identification method have formed a system, but there is a certain distance away from practical. This paper analyzes the common faults and influencing factor of diesel engine. The principle, characteristic and disadvantage of modern fault diagnosis technology, such as various time-frequency methods based on vibration signal, speed fluctuation method, iron content and spectrometry, grey system theoretical diagnosis method, artificial neural network and expert system fault diagnosis method, were reviewed. The difficulties and the development direction of diesel engine fault diagnosis were put forward in the end.     

基于嵌入式Linux-ARM的储粮监测技术的研究

设计了一个基于ARM技术的粮库嵌入式监测系统.该监测设备由两部分结构组成:一个是上位机电脑控制端对粮食信息的监测和处理,另一个是在下位机实现对粮仓粮食数据的采集,信号的处理以及通讯的功能.通过工业以太网或GPRS网络可以将数据从一方传给另一方.在此基础上展开以S3C2410处理器来实现粮食相关信息监测的研究,其中人机交互界面终端通过Qt/E来设计.试验测试结果证明了该系统的可靠性和稳定性.     

基于Web的开放实验室网络教学管理课件的制作

实验教学是高等教育的重要环节,实验室是培养学生实践能力的场所,实验室管理是保证实验顺利实施的技术手段。基于Web的开放实验室网络教学管理课件,能充分发挥计算机网络技术的优势,合理使用实验室资源,调动学生学习的积极性和主动性,培养学生实践能力和创新精神。     

Design of nondestructive test system for plasma clots

One of the most important measures that are used to guarantee blood transfusion safety is to detect clots in the plasma before transfusion. To overcome the disadvantages of manual detection method, this research designs a nondestructive testing (NDT) system for plasma clots inspection based on machine vision technique and artificial neural networks. The key technology for system design are studied and presented. Image acquisition is performed by custom-designed software based on MATLAB platform, and the methods of image cut, reverse color, median filter as well as gray cutting are adopted to preprocess image. The use of fisher discrimination method, combined with iterative threshold segmentation method and the selection of connected domain, can successfully eliminate the interference of air bubble and correctly extract the image of plasma clots. Plasma clots are discriminated by a recognition model based on artificial neural network BP algorithms. The results of clinical contrast experiment shows that the system can effectively detect whether plasma contains plasma clots and the new system shows a much higher degree of repeatability and stability. From the image acquisition and processing to the recognition of plasma clots, the detecting time of a sample is no more than 1 min.     

Design of the distributed wireless monitoring system

For the limitations of the traditional monitoring systems under the circumstances of dispersed monitoring points, wide distribution range and the harsh environment, a distributed wireless monitoring system based on radio frequency technique is designed. The system adopts the ultra low power consumption MCU MSP430 as the main control chip and extends several processing module in the periphery. In addition, the multi channel transceiver nRF905 is used for wireless data transmission. The software and hardware design scheme of the proposed system and the communication protocol for distributed data transmission are discussed. Frequency hopping mechanisms are employed to increase the reliability of data transmission. The results show that the proposed system has the characteristics such as flexible use and excellent mobility, while can monitor multipoint data in special environment in real time.     

Design of Intelligent Personality for WEB Search Engine Based on Agent

Along with the rapid increase in information of internet,the information research technology was confronted with more and more challenge.Traditional WEB search engine is not satisfied with users' special demand any more,therefore there comes forth a trend to join intelligent technique with Web search engine.This paper puts forward a Multi-agent based architecture for WEB search engine based on traditional architecture.An effective securities business search engine,which is can satisfy user's especial request which is created by means of intelligent technique.If the system is used in many other special fields,good results of information research can also be acquired.     

Development of an automated monitoring device to quantify changes in firmness of apples during storage

An automated firmness monitoring system for apples was developed to estimate loss of firmness during storage and determine the time when cool stores should be opened. The non-destructive acoustic impulse response technique was chosen to measure firmness. This technique was very reproducible and its sensitivity to firmness changes was greater than the sensitivity of penetrometer measurements with a materials testing device. The correlation between the acoustic impulse response technique and penetrometer varied according to the apple cultivar and freshness. The developed automated fruit firmness monitoring system is composed of a rotating disc on which a representative fruit sample is located, an electromagnetic excitation mechanism, and an optical sensor to detect the position of the apples. A microphone records the apple vibrations at impact and is linked to a computer with a data acquisition and analysis programme, which is placed outside the cool store. A first-order degradation model, fitted to the measured firmness data, is used to estimate the time when the cool stores should be opened to guarantee an average firmness after storage.     

Development and Design of ABS Dynamic Test-bed for Automobile

Aiming at the problems of ABS products tested on vehicle, a character test-bed of automobile and motorcycle ABS is studied.To provide an economic and efficient test method for vehicle anti-lock braking system(ABS) in laboratory,the idea of designing a dynamic test-bed is researched and developed,which can simulate actual working status of automobiles well and truly.The test-bed structure character,design principle and key techniques are discussed.It will provide a new method for testing ABS products of automobile and motorcycle.     

基于无线传感器网络和WebGIS的墒情监测系统

为了解决墒情监测中便携式监测仪数据存储、发送困难及墒情实时监测和分析等问题,建立了基于无线传感器网络和WebGIS的墒情监测系统。系统以STC单片机为核心芯片,结合GPRS模块、GPS模块,通过无线传感器网络技术,实现土壤水分数据的实时监测及无线传送。建立了数据库,接收监测点数据。并以SuperMap IS.NET和SQL Server 2005为开发平台进行二次开发,将GIS技术与墒情监测结合起来,根据作物耕作深度、作物生长期对土壤含水量进行判断,得出墒情结果。实现墒情监测点信息、土壤含水量曲线图、等值线分布图在Web服务器上的显示。墒情监测系统的建立和使用,对农业生产有深远的意义。     

Development of Embedded ECG Monitor Based on Linux

Presently, ECG monitor encounters the trend of miniaturizing, intelligentizing and networking. Short distance and limited channels are shortcomings of the existed telemetric ECG (Electrocardiograph) monitoring system, while the existed remote monitoring system has the disadvantages of high cost and low Data Transfer Rate. Furthermore, neither of these two systems can implement real-time monitoring on the spot. So, an embedded ECG Monitor based on Linux, which successfully solves these problems, is introduced. With embedded system technique, this embedded monitor, which can not only realize real-time monitoring on the spot, but also analyse the ECG data, has the advantages of low cost, small volume, light weight, low power, high stability, powerful networking function and so on. And by communicating through Internet, which has the features of low cost, high data transfer rate and good expandability, it can also send ECG data to monitoring center in order to achieve long-term monitoring. The development of this monitor provides a new solution for medical instruments' implementation and networking, and is of certain reference value.     

北方果树霜冻害远程监控与报警系统初步研究与实现

为提高北方果树防霜冻害管理水平,基于物联网架构,设计实现了北方果树霜冻害监测与报警系统。该系统结合实时获取果树生长环境数据,及果树霜冻害发生规律和专家知识库,为用户提供远程果树环境信息分析和霜冻害智能诊断服务。同时为满足不同生产条件需求,结合用户需求和环境状况,提供自动报警。根据用户随时随地获取信息的需求,基于多种网络技术等(如Internet、android等移动互联网),开发了可用于PC终端、移动终端(如智能手机、平板电脑等)多平台管理模式。通过提供现场综合远程实时监控、数据采集、网络传输、数据管理分析及报警预警等功能,系统实现了对果树生长的全方位多功能的远程监控与综合管理,有效提高了果树防霜冻害监控管理水平。     

‘富士’苹果贮藏期品质安全预警远动系统

为了实时监测‘富士’苹果的贮藏环境,维持冷库内苹果的高品质。在Zigbee技术和GPRS数据传输技术应用的基础上,结合温湿度、CO2乙烯传感器等模块,设计了一组数据采集节点,构建了冷库环境中的无线传感网络,同时利用J2EE技术开发了‘富士’苹果贮藏期品质安全预警远动系统,解决了数据采集和冷库实时环境监测及远程数据预警问题。在温度分别为0℃、相对湿度为90%及CO2浓度为1%的环境下对冷库进行了数据传输包收发率测试。测试结果表明,收包率可达80%以上。通过使用本系统,可以有效的对冷库内的‘富士’苹果品质安全进行实时远程监控。