Brake 3D Models Parameterized Design

Aiming toovercome thelimitation of the traditional design methods of automobile parts, this paper presents a design and analysis method based on "Soft Prototype". By developing a professional CAD system Drum Brake Design and Analysis System, the authors researched the design method of "Virtual Products" and the technologies of parameterized modeling. During the development of software, some new methods are presented. In this CAD system, the database, graphical browser and designing module are united perfectly, and parameters are utilized to create models. Such a system can greatly improve design efficiency and reduce the time of new products development     

PEG对杂花苜蓿体胚发生的影响及体胚的细胞学观察

以甘农1号杂花苜蓿下胚轴为材料诱导愈伤组织,愈伤组织在添加不同PEG6000浓度的UM+0.1mg/L NAA+0.5mg/L KT培养基上发生体胚,研究PEG6000对体胚发生的影响,并观察了体胚的细胞学结构。结果表明,适量的PEG6000对体胚的发生有促进作用,其中添加6% PEG6000体胚的发生率最高;石蜡切片观察得出体胚的发育经过球形胚、心形胚、鱼雷胚及子叶胚4个阶段形成一个完整的体胚。     

Serial Communication System Between PC and PLC Based on Visual C++

It is usually need to supervise and control gathering data and working status of PLC in industry control.There are some ways such as VB,DELPHI,PB to carry out the requirement.Visual C++ is an exploiture tool for Windows application program and has quite strong function in the aspect of image processing and database managing etc.It has faster speed to realize bottom communication control.Using Visual C++ and MFC,the authors implement the serial communication system between PC and PLC.The paper introduces the communication protocol and software design method and realizes data's sending and incepted rapidly,real-time auto-control accurately and quickly.This system is simple,economical,and reliable and has an application value,which has been applied successfully in real system.     

基于物联网技术的农业气象观测系统的研究与设计

为了更好地实现农业气象数据观测的实时、可靠、准确性,研究设计了一种基于物联网的农业气象观测系统。该系统在Eclipse的开发环境中,利用B/S模式和专业数据库实现数据采集与应用实时结合的功能,解决了过去气象部门数据与应用软件分离,监测、分析功能实时性不高的问题。同时,后台应用软件利用前端无线传感网络的实时数据,并结合专家知识自动向用户推送农业气象预报信息。综上所述,研究设计的农业气象观测系统信息推送准确及时,极大地满足了现代农业对气象服务精准化的需求。     

Real-time Performance of Linux System

The standard Linux is a typical time-sharing system, it has a poor real-time performance. But according to the applications of the Linux OS are expanding on real-time domain, it becomes necessary to enhance the performance of the Linux system. This paper analyses the schedule policies and schedule algorithms of the Linux kernel, and discusses several different kinds of methods about enhancing real-time performance of the Linux system from the total Linux system. They authors summarizes the current research's developments of the Linux system.     

基于交叉污染视角的冷链食品质量控制分析

阐明交叉污染的发生机理,找出影响冷链食品质量的因素,运用Vensim软件对其因果关系进行分析。基于交叉污染视角,从冷链食品的生产和销售到客户的整个物流过程,分析了食品的各质量控制环节,设计出冷链食品的质量控制流程。为了进一步避免冷链食品交叉污染,提出两个解决方案,一是改善冷链食品的运输包装;二是改良设计专门的冷链食品运输箱。这两个方法不仅能解决交叉污染问题,保证冷链食品质量,还能节约物流成本,提升客户满意度,提高企业效益。     

Rapid Prototype Control of Hydraulic Automatic Transmission System Based on dSPACE

dSPACE is a prototype development and real-time control testing platform which is based on MATLAB/Simulink software. By establishing mathematic model of hydraulic automatic transmission system, the shift rules are achieved. A testing platform for hydraulic automatic transmission system is developed whose control software is programmed by simulink and using the dSPACE as the centre controller. The experiment of electric throttle control and power performance matching control of hydraulic automatic transmission system is carried out. the result shows that well matching performance of hydraulic automatic transmission system can be realizedby using the control strategy proposed in this paper, it provides a fast and efficient approach for researching and developing the hydraulic automatic transmission system.     

棒曲霉素控制技术及检测方法研究进展

系统阐述了棒曲霉素的的理化性质,分析了国内外对棒曲霉素检测、去除及降解技术研究的现状及存在问题,提出了我国目前应着力解决的关键技术性问题:①建立食品中棒曲霉素的全程控制技术体系,从源头做起,在食品生产的不同阶段嵌入关键控制技术,实现全程监测、预警及控制;②建立棒曲霉素的现场快速检测方法及监测技术体系,为实时控制提供基础数据;③进一步研究完善食品中棒曲霉素的安全去除技术方法;④研究开发食品中棒曲霉素安全的降解技术,构建降解与去除相耦合的新型工艺技术体系。     

聚乙二醇对谷稗种子萌发及相关生理指标的影响

摘要：【研究目的】研究聚乙二醇（PEG6000）渗透处理谷稗种子对其萌发及相关生理指标的影响,分析谷稗种子萌发和幼苗生长与水分胁迫的关系,旨在研究引发对促进供种萌发和活力的效应,为谷稗的生产管理提供科学依据。【方法】分别以15%、20%、25%、30%浓度的PEG6000对谷稗种子进行24h、60h、100h浸种渗透处理,研究谷稗发芽率、发芽速度、相对电导率、脯氨酸含量的变化。【结果】适宜的PEG6000浓度和浸种时间均能不同程度的促进谷稗种子的萌发,表现为谷稗种子发芽率增高、发芽速度加快、相对电导率下降。当25%PEG6000浸种24h时,脯氨酸含量达633.31ug/mg,是CK的3.56倍,存在极显著差异(P＜0.01)。【结论】PEG6000处理提高了谷稗种子的发芽率、发芽速度和细胞膜系统的完整性,25%PEG6000浸种24h是PEG引发谷稗种子较为适宜条件。     

温室环境控制系统的发展

本文详细介绍了国内外温室环境控制系统在软硬件设计、控制策略、节能方面的研究进展。指出应优化控制系统性能,将专家系统、遗传算法和模糊神经网络等多种控制算法和仿真预测相结合,并采取各种控制措施,以减少调控所需的能源消耗,提高能源的利用率,为植物创造最优的生长环境,促进设施农业的全面发展。     

Development of Software Reuse Technology in Industrial Control Software Area

This paper briefly introduces the contents and characteristics of the software reuse technology and industrial control software. The development of the software reuse technology in industrial control software area is discussed emphatically. Then the article brings forward a kind of thought that establishes standard element class library and develops the application program frame adapts to industrial control area. Namely, they are the establishment of the reuse of standard element class library based on the level of class library, the design of the reuse of the program frame based on the level of design, the amelioration of the reuse of the designing method based on the level of analysis. This thought improves on design method of industrial control software and is applied in the real-time monitoring system for the high-press water pump station.     

苹果表面伤痕与果梗和花萼的辨识及检出方法

针对在水果表面品质检测的图像处理中,苹果的果梗和花萼很容易被错误辨识成缺陷,提出一种自动识别出苹果缺陷,并计算其大小的图像处理算法,如图像分割、图像去噪、区域标记与提取、感兴趣区域提取等,设计出一种能将采集到的苹果图片进行正确处理后,识别出果梗和花萼,得到真正缺陷大小的图像处理算法。运用C++语言进行编程,采用MFC基于对话框的非模态形式设计了图像处理软件,处理采集到的苹果样品图片,结果表明,该算法能正确计算缺陷大小,并且能得到果梗和花萼的辨识依据,可用于水果表面品质实时检测中。     

Real-Time Tracing of 200 MW Power Plant Generators By A 3~+ Network

The communication of the application program among work tations of 3+ network is realized by the shared file on harddisk of the network server,which does not support the application program' s real-time communication among the network workstations nor supplies software or hardware needed for information refreshing, nor fits for field multibatch continuous real-time transmission and processing of working condition information, by using the NETBIOS function call method, the real-time communication among network workstations is realized and a power plant working information background real-time communication and data processing system is developed which effectively traces working condition from tow 200 MW power plant generators, altogether 321 points from a cycling detecting system and 78 binary points for broadcasting the information to other workstations,and realizes a complx display of 14 working condition graphs and a real-time data simulation graph.     

Multi-field coupled numerical simulation of volume conduction energy transfer

The research on volume conductive model can be used in designing the conductive systems and optimizing the energy transfer parameters. By considering the coupling of circuit, electromagnetic-field and temperature-field, a 3-D multi-filed coupling model is developed. On the circuit level, the simulation of volume conduction, real-time monitoring for the temperature of skin tissue are achieved, which provides direct theoretical guidance for energy transfer optimization design. With the software FEM 3.5, a volume conduct multi-field coupling model is built to verify the feasibility of volume conduction, which also lays foundation for further optimize energy transfer efficiency.     

Design and Realization on Remote Condition Monitoring System for Feeding Oil Pump

In view of the actuality of the feeding oil pum monitoring,the network technology,the database technology and the Dot Net remote technology are integrated nimbly to construct the remote condition monitoring system for feeding oil pump,which has many functions such as the real-time data monitoring and alarm,real-time monitor data storage remote monitoring,network data sharing,fault analysis,and so on.The whole construction design of the system and the realization of its sub function are given.The worker's intensity of labor,the maintenance cost and the accident occurrence rate of the feeding oil pum were dramatically reduced when the system was applied to the oil storeroom successfully.     

基于LabVIEW的潜油电泵数据采集系统

应用LabVIEW虚拟仪器现场可编程门阵列(FPGA)对潜油电泵的电压、电流参量进行实时数据采集,通过上位机对采样数据进行分析处理,得到潜油电泵的视在功率、有功功率、无功功率和功率因数,并与电能质量检测仪检测数据进行对照。系统硬件采用NI sbRIO-9606和NI9683夹层板配合使用,突破了传统的依靠DAQ助手的硬件采集,基于现场可编程门阵列(FPGA)的数据采集系统,由软件构成采集功能芯片,可控性强,准确性高,应用性好。实验表明,该系统在误差允许范围内能够对数据进行准确采集。     

Circuit Design of Piezoelectric Biosensor Based on CPLD

A kind of sampling circuits of piezoelectric biosensor is designed based on the CPLD devices. It is realized that 10 MHz high frequency signal measure and sampling, data display and data serial communication etc. The system has been proved to have high reliability, good real-time performance. The system architecture are discussed in detail including hardware and software, and the implementation. The simulation result of CPLD kernel and the frequency curve by sample soft are shown.     

An Optimization Model and Its Computer Software System for Regulation of Alloy Elements During Steelmaking Process

In this paper, an optimization model is designed for regulating alloy elements during steelmaking process, and a real-time computer software system has been developed based on the characteristics of alloy steelmaking. The results indicate that the system is of good operation performance, remarkable economical benefits and higher application value.     

基于ZigBee的冷链温度监测系统的研究

为满足贮运食品对冷链温度实时监测的需要,研究设计了一种基于ZigBee的冷链温度监测系统。该系统利用SZ05模块构建ZigBee网络,实现冷链温度的实时采集与传输,协调器节点采用ATmega128作为控制器,路由节点采用ATmega16作为控制器,分别设计出两种节点的硬、软件。经12 h组网通信测试,结果表明,该系统的硬件结构简单、体积小、设备可靠性高,组成的无线传感网络能够实现对温度准确、稳定、可靠的实时监测,对监控冷链温度、保证冷链中易腐食品品质和食用的安全性可起到重要作用。     

Development of General Measurement & Control Software Platform for Automobile Components Test

This paper has discussed the characteristics of the development of automobile components test system.Based on the development example of vehicle hyraulic shock absorber test system,the paper has built general measurement & control software platform for automobile components tests,carved up main function modules along with the class libraries for platform,and adopts multi-thread technology to guarantee platform's real-time performance.The platform has enough flexible and extensible capability,and can satisfy the requirements of software developing for modern automobile components test system.