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文章针对农产品加工过程中微量组分配料称量精度问题,以计算机为上位机、以电子秤为下位机、以RS-232作为两者之间的通信总线,利用Visual Basic中的MSComm控件等软件系统开发其应用程序,通过多次性能试验和改进,实现了农产品微量组分的可靠配料和准确称量。 相似文献
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程力 《农产品加工．学刊》2011,(8):56-58,62
依照总体设计原则和通用设计原理,兼顾小杂果本身的物料特征,自主研究设计自动分级机。小杂果单果质量一般在10～40g左右,要达到设计要求的生产能力、无损伤及分级精度,必须同时兼顾分级部件的工作速度和称量系统的精度。阐述了6GF—500型小杂果自动分级机的原理、组成,以及主要参数的确定、主要解决的关键技术和创新点,并对该机型的应用前景进行了展望。 相似文献
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基于民勤荒漠植物非称量蒸渗仪试验系统研发过程,对民勤不同监测时段的非称量蒸渗仪结构设置、试验监测及其监测结果应用情况进行对比分析。结果表明:民勤非称量蒸渗仪试验研究起步较早,先后经历了5代非称量蒸渗仪试验系统的研发改造过程。第1、2、3代非称量蒸渗仪试验系统的建立,使民勤荒漠植物蒸渗试验得到逐步发展与完善;第4代荒漠植物非称量蒸渗仪试验系统增设了渗漏监测,模拟了荒漠植物真实的补水状态,设计出不同地下水恒位补偿式蒸渗仪和渗漏型蒸渗仪,实现了地下补水与地面灌水试验的同步监测;第5代荒漠植物非称量蒸渗仪试验系统通过扩容改造,实现了荒漠植物林木与林分尺度蒸渗试验的同步监测,并基于电子传感技术实现蒸渗监测自动化管理,为尺度水平荒漠植物蒸散耗水研究及其监测数据的网络资源共享提供保障。 相似文献
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郭和伟 《农产品加工．学刊》2011,(8)
某小型饲料加工流水线是采用传统的继电—接触器控制的,系统接线复杂、故障率高、可靠性差。介绍用三菱公司的FX1N—60MR型PLC改造的小型饲料加工流水线控制系统。根据小型饲料加工流水线的加工工艺和工作原理,设置PLC的I/O地址,设计外部设备接线;根据原理、控制要求和特点,设计系统梯形图,连接外部设备进行调试运行,达到系统改造要求。 相似文献
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在饲料配方中,数学方法占有非常重要的地位。综述了饲料配方设计中应用的几种数学方法:试差法、线形规划、目标规划、模糊规划、灰线形规划和随机规划等方法,从而为建立科学、合理的饲料配方优化系统奠定良好的基础。 相似文献
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设计出一种粮仓窗户远程自动控制系统。根据仓内外的温度和湿度变化,自动开启或关闭窗户及通风机械,实现粮仓的自动通风,自动控制。该系统可与粮情检测系统、通风控制系统等结合,组成粮仓自动化管理系统。 相似文献
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种子检验工作任务重、数据量大,检验过程中的人为因素越来越成为影响种子质量的因素,而手工处理大量的检验信息、检验数据,会导致效率低下、出错概率高。基于此,笔者设计开发了种子检验信息管理系统。该系统具有信息录入速度快、数据自动计算修约、表单自动生成等功能,实现了检验工作全过程计算机自动处理。主要介绍了该系统设计开发过程和系统的主要功能及特点。 相似文献
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笔者通过对养猪场（户）的走访，发现在后备母猪饲养管理过程中普遍存在着营养不良、营养不平衡、饲料使用不当等问题，从而造成其发情迟缓或长期不发情。为了杜绝这些问题的发生，现将后备母猪的营养需要与配料技术介绍如下，以供大家参考。 相似文献
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To guarantee the safety and reliability of steam-injection boiler, the real-time supervisory control system of steam-injection boiler is developed. This system consists of host computer and slave computer two levels system. The run parameters and run status of steam boiler are automatic supervisory with the host computer. The important parameters acquisition and manual adjustment to run parameters of steam boiler are accomplished by the slave computer. The practice proves the validity of this system. 相似文献
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Yang Mingshou Wang Yongqin Zhang Yan YangJianjun Liao Changchi Liu Zhibin Duan Fuyou 《保鲜与加工》1994,(5):110-114
Introducing a set of operation monitoring and Controlling system for petroleumpump unit. The system consists of the principal computer-AST386 micro-computer and subordinatecomputer-STD Bus industrial control computer. It ean provide real time and graphical display of 55channel parameters,supply rarious information of man-machine talk by printing,power cutouutprotection,3 optimum control routes. With the help of serial communication,the principal andsubordinate computer ean make petroleum pumps operate safely in a rational working case with alower waste and greater runoff of the unit. 相似文献
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There are some weaknesses for traditional microscope measurement, including small scope field, complex operation and subjective errors. To avoid these issues, a measurement system combining video and microscope is made. With the magnification of microscope and video, the accuracy of grating micrometer and the real-time notification of chamfer location, this system achieves high precise measurement. By displaying with two monitors, the computer can collect and display other measurement data while the chamfer is measured, which makes full use of the display resolution and enhances the efficiency of instruments. The method is valid for measuring size of special work-pieces. 相似文献
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He Yulin Liu Jing 《保鲜与加工》1991,(5):96-102
This paper expounds a method of realizing animated display of structure model by computer animation at the request of test model analysis. The following problem have been discussed. They are the construction of structural geometric model,data processing and interchanging, two dimensional graphical display of three dimensional structure and the generation of computer animation. 相似文献
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摘要：目前,虚拟现实技术在园林中的应用尚处于探索时期,但随着计算机软硬件水平的提高和可视化技术的不断发展更新,虚拟现实技术在园林中应用的领域逐渐广阔,对园林设计的影响也越来越大。本文以一个城市广场的园林设计为例,结合Quest3D技术制作开发了一个园林漫游展示系统。介绍了园林漫游展示系统的设计过程,研究了园林场景的建模、植物和水体模型的控制、光照和阴影设置、摄像机设置等问题。探讨了Quest3D技术在园林设计中的应用,研究了园林交互展示的相关技术,总结了构建园林漫游展示系统的方法和过程,为园林设计的展示提供一种有效的方法和途径。 相似文献
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Chen Minyou 《保鲜与加工》1993,(2):37-43
This paper proposes an expert control system for industrial processes on-line control and supervision by combining expert system techniques with computer process control techniques, introduces the fundamental design principles,basic structure and engineering implementation of this real time expert control system and gives the field operation results concerning the processing of a sodium chromate rotary kiln controlled by this expert control system as an application example. 相似文献
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This paper presents the character of cascade control system and the design of the main loop and subloop. A cascade PID control system based on MATLAB is designed, which is controlled by MATLAB control program based on incremental PID control algorithm and PID parameter tuning method based on computer control. The results show that the control system has good performance. 相似文献
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WU Kui~ LI Run-fang~ JIANG Wei~ity Chingqing Chin . Chongqing Institute of Petroleum Chingqing Chin 《保鲜与加工》2004,(5):17
The computer monitor and control system for hydropower station is always a structure system of laminate distribution and open style. The system can adjudge active power and inactive power of water turbine according to the requirement. The operators in active-control level give the value of active power and inactive power for water turbine by computer workstation. PLC of LCU run the power control procedure by net communication in order to realize power adjust. The power adjust of water turbine mainly by speed control system and magnetization system. The 2-D Fuzzy PID Control Model is proposed in order to carry out power adjust of water turbine . In this new method the parameter of PID can self-neaten on line according to power deviation and power deviation rate. By means of this procedure the machine unit can obtain given power value rapidly, exactly and stably. It can make the power adjust of monitor and control system obtain good control characteristic and robust, and it is benefit to extend the work life of machine unit. 相似文献
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温室蝴蝶兰生长动态模型设计与实现 总被引：2，自引：1，他引：1
为了对温室蝴蝶兰生育过程的基本规律和量化关系有一个清楚的理解和认识,并对其生长系统的动态行为进行预测,从而辅助进行对蝴蝶兰生长和生产系统的适时合理调控,研究建立了以太阳辐射为基本驱动因子的温室蝴蝶兰生长发育动态模型,进一步开发出基于WindowsXP的计算机模拟系统。模型系统采用C++ Builder6.0语言编程技术,主要包括太阳辐射、碳同化、干物质分配等重要模块,可以输出干物质积累量、光合作用率、叶面积指数、叶片数与花朵数等参数变量,具有较完善的功能,模拟系统在界面和功能上能够达到较好的统一。对山东省济宁市农业高技术园区温室内蝴蝶兰进行模拟检验分析表明,模拟结果与实测结果符合较好,模型系统可以动态预测蝴蝶兰光合产物积累量等重要变量指标,研究认为该模型系统是研究蝴蝶兰生长发育特性及优化管理的重要工具。 相似文献
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FAN Jian-Hong ZHOU Xue-cai QUO Yin-biao ZOU Qin 《保鲜与加工》2004,(3):9-12
A confocal scanning laser microscope is presented. Its motion control system is built with the DSP - based motion controller. The system worked on a double CPU structure that includes industrial control computer and motion controller, the system adopt friendly man - machine interface In the design of software. The systems tasks are divided into real - time tasks and no - real - time tasks. The lower computer deals with the real - time tasks such as position control and velocity control and the upper computer is used to deal with the non - real - time tasks. The system structure of con-focal scanning laser microscope and the constitute of motion control system as well as the software is introduced . 相似文献