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1.
介绍了一种大容量蓄电池的实时参数检测系统。该系统实现了对蓄电池组中每块蓄电池的电压、温度、电解液液面高度限等参数的实时检测。控制器以LPC2104为核心,在μC/OS-Ⅱ基础上开发应用软件,传感装置以PIC18F2420为核心,软件采用前后台方式运行。  相似文献   

2.
设计并实现了基于颜色特征的嵌入式液态试剂检测系统。该系统以嵌入式微处理器为核心,使用CCD摄像头采集检测图像,通过图像中的颜色特征拟合液态试剂的浓度数据。图像采集功能实现和彩色图像处理算法设计是系统设计的重点。最后以一组DNA含量检测对本图像检测系统的可行性进行了验证。  相似文献   

3.
设计并实现了基于颜色特征的嵌入式液态试剂检测系统。该系统以嵌入式微处理器为核心,使用CCD摄像头采集检测图像,通过图像中的颜色特征拟合液态试剂的浓度数据。图像采集功能实现和彩色图像处理算法设计是系统设计的重点。最后以一组DNA含量检测对本图像检测系统的可行性进行了验证。  相似文献   

4.
车辆性能参数智能检测系统   总被引:1,自引:0,他引:1  
研制了一套车辆性能参数检测系统。介绍了系统的组成及功能、软件设计、检测流程控制和试验结果等。该系统以单片机为核心,实现了车辆检测过程的自动化控制和各种参数的智能化检测。  相似文献   

5.
外冷器温差检测系统   总被引:3,自引:0,他引:3  
结合具体生产实际,详细阐述了以80C196/KC为核心、PSD302为存储芯片,包括电流型检测输入和双重滤波等环节所组成的高精度实时测温系统。给出了检测回路原理图及测量系统流程图。该系统可应用于化工生产或其它相关领域的实时温差检测,具有精度高的特点。  相似文献   

6.
李林 《工矿自动化》2011,37(4):37-40
介绍了一种野外作业移动库房安防系统的设计和实现方案。该系统以C8051F120单片机为主控制器,以STC89C52单片机为从控制器,以热释电红外感测器D203S为核心构成人体检测模块,以烟雾传感器MQ-2为核心构成烟雾检测模块,采用CRM2400TNC无线模块实现主、从控制器之间的通信,可实现库房内人员监测、烟雾检测以及库房物品进出情况监测及报警功能,且只有输入正确的密码才能关闭报警系统。测试结果验证了该系统的有效性和可靠性。  相似文献   

7.
针对传统人工手动检测存在耗时费力且精度低的问题,分析了基于计算机的视觉检测系统的不足,以数字图像处理和机器视觉技术为基础,以嵌入式微处理器为核心,设计了一种基于嵌入式技术的可视化、便携性良好的视觉检测系统。介绍了该检测系统的工作原理和总体结构,给出了系统的硬件选择和软件设计方案,并讨论了该系统的主要应用领域。以齿轮尺寸的视觉测量为例,实验结果表明,该系统能够准确、快速、实时在线地检测目标,可靠性高且操作便携。  相似文献   

8.
赖扬川 《福建电脑》2009,25(3):136-137
介绍一种基于微机原理与接口技术的温度与压力检测系统设计。以8255A可编程接口芯片为核心,结合8255A芯片的组成结构,阐述系统的构成和8255A的工作原理,并讨论系统的硬件电路,该检测系统实现了低成本、精度高、安全性能高的设计要求。  相似文献   

9.
为实现直流供电系统中的绝缘故障检测,研制了一种以AVR单片机为核心的智能传感器系统。该系统利用电磁感应原理检测直流供电系统中电气负载馈电回路的不平衡电流,实现了对电气负载绝缘故障的检测。经过现场测试,该智能传感器系统具有低功耗、高可靠性和易使用的特点,试验结果表明:系统达到了检测准确度要求。  相似文献   

10.
塑胶跑道是国际上公认的最佳全天候室外运动场地坪材料,主要是由聚氨酯橡胶等材料组成,多以沥青混凝土和水泥混凝土为基础建设。随着国家大力发展体育健身事业的政策导向,市政规划中越来越重视室外运动场地的建设,检测质量要求随之增高,运动场地的长期检测与维护提上了日程。采用YOLOX-S目标检测算法,构建塑胶跑道缺陷检测系统,以实现对塑胶跑道的路面情况检测,为其长期检测与维护提供技术支持。该系统以深度学习算法为核心,随着图片样本的扩展,优化原有模型,该方法检测速度快、计算效率高、检测准确性高。同时,该系统用户友好性高,用户只需通过系统上传待检测的单幅或多幅图像,即可得到具有缺陷类型、位置和数量的检测报告,提高工作效率,以便用户从多方面了解当前路面的信息。  相似文献   

11.
有效保护各种移动设备中的数据安全是当前嵌入式系统的关键技术之一。针对各种移动设备,特别是资源受限设备,在通用文件系统的基础上,采用适合嵌入式系统的安全访问控制策略,以及对存储器的设备驱动层代码优化,研究并实现了一个轻量级嵌入式安全文件系统。实际应用表明:该模型能够满足嵌入式安全文件系统的性能要求。  相似文献   

12.
叶劼民  张忠能 《计算机工程》2004,30(Z1):450-451
在企业的仓库实际管理中,对于类似于钉子的物料,仓库在发料时不会按需求量去数具体的数目,而采用一次发一个或几个包装。 相应的在ERP系统中通常都无法完成这种与实际情况相符的出库作业。该文以EXPLANNER为例,通过对现存系统的分析,对其中的库存模 块进行改造,从而解决批量出库问题。  相似文献   

13.
Complex systems, such as power plants and commercial aircraft, are designed to operate safely under normal and disturbance conditions. Integrated-system validation is one means to evaluate whether safety and productivity goals can be achieved prior to actual operation. While some types of systems can be tested in an actual operational environment, validation is especially difficult when safety or economic considerations preclude testing in the disturbance conditions they are designed to handle. This paper proposes a conceptual model for integrated-system validation based on an integration of current approaches to design validation and concepts adopted from quasi-experimental research methodology. The model identifies important validation principles and the methodological considerations needed to support a logical and defensible inference to be made from validation tests to system performance under actual operating conditions. Central to the model are four general forms of validity: system representation, performance representation, test design and statistical conclusion validity. Threats to the inference process and weakness of the model are also discussed.  相似文献   

14.
Fault estimation for classical nonlinear Lipschitz systems has been subject to several research works. So far, much less interest has been given to the more generalized class of systems, namely, one‐sided Lipchitz systems. Dealing with component faults and actuator faults, only very few works have been done to reconstruct these types of faults for this new class of systems. A major limitation of the previous works is that the fault vector to be estimated there does not give any information about the actual faulty physical parameters of the system, so component faults and actuator faults are not distinguishable. In this paper, a set of possible faulty parameters in the system is estimated. Component faults and actuator faults are separated and distinguished. The effectiveness of the proposed method is shown through simulations for a numerical example.  相似文献   

15.
Widespread implementation of e-learning systems – learning management systems, virtual learning environments – across higher education institutions has aroused great interest on the study of e-learning acceptance. Acceptance studies focus on the predictors of system adoption and use, with behavioral intention to use the system as a proxy for actual use. This study proposes a TAM3-based model – with the inclusion of two additional variables: personal innovativeness in the domain of information technology and perceived interaction – to study the factors influencing the acceptance of e-learning systems. Attention is also brought towards the role of behavioral intention, especially in its relation with use behavior. In order to do so, two different settings were considered: higher education and lifelong learning; data was gathered from a survey administrated to Spanish graduate and lifelong learning students, and partial least squares analysis was used to test the research model. Results supported TAM relations, except for the intention-behavior linkage, and unveiled a dual nature of perceived usefulness – with one component related to efficiency and performance, and another component related to flexibility. The adequacy of applying TAM3-based models in educational contexts and suitability of actual system usage measures are also discussed.  相似文献   

16.
Neuro-fuzzy systems have recently gained a lot of interest in research and application. They are approaches that use learning techniques derived from neural networks to learn fuzzy systems from data. A very simple ad hoc approach to apply a learning algorithm to a fuzzy system is to use adaptive rule weights. In this paper, we argue that rule weights have a negative effect on the linguistic interpretation of a fuzzy system, and thus remove one of the key advantages for applying fuzzy systems. We show how rule weights can be equivalently replaced by modifying the fuzzy sets of a fuzzy system. If this is done, the actual effects that rule weights have on a fuzzy rule base become visible. We demonstrate at a simple example the problems of using rule weights. We suggest that neuro-fuzzy learning should be better implemented by algorithms that modify the fuzzy sets directly without using rule weights.  相似文献   

17.
The use of a modern technological system requires a good engineering approach, optimized operations, and proper maintenance in order to keep the system in an optimal state. Predictive maintenance focuses on the organization of maintenance actions according to the actual health state of the system, aiming at giving a precise indication of when a maintenance intervention will be necessary. Predictive maintenance is normally implemented by means of specialized computational systems that incorporate one of several models to fulfil diagnostics and prognostics tasks. As complexity of technological systems increases over time, single-model approaches hardly fulfil all functions and objectives for predictive maintenance systems. It is increasingly common to find research studies that combine different models in multi-model approaches to overcome complexity of predictive maintenance tasks, considering the advantages and disadvantages of each single model and trying to combine the best of them. These multi-model approaches have not been extensively addressed by previous review studies on predictive maintenance. Besides, many of the possible combinations for multi-model approaches remain unexplored in predictive maintenance applications; this offers a vast field of opportunities when architecting new predictive maintenance systems. This systematic survey aims at presenting the current trends in diagnostics and prognostics giving special attention to multi-model approaches and summarizing the current challenges and research opportunities.  相似文献   

18.
The recent impressive developments in intelligent knowledge-based systems design have led inevitably to proposals to design intelligent tutoring systems along similar lines. At the core of such a tutoring system is an ‘expert system’ able to perform whatever task the learner is to master. This methodology focuses on expertise, views actual student behaviour as deviant and encourages conformance to some predetermined standard. This paper describes an alternative research strategy involving the design of ‘guided discovery learning’ systems built around machine learning programs.  相似文献   

19.
Siv Friis 《AI & Society》1995,9(2-3):193-207
Prototyping is not a new approach to computer-based information system development. It is just one technique among many used in system design. What might be new is for what purpose prototyping is used. The purpose could be to achieve a more user controlled system development and to give the future users a tool that will enable them to fully participate in not only the work with requirements specifications, but also in the actual systems design and organisational change. This paper describes a working model of an approach-the PROTEVS model-in which it is recommended that the future system users design their own prototype systems. The prototypes may act as both requirements specifications and solutions for actual change. This alternative approach aims to offer a basis for new ways of action for future users as participants in the design, evaluation, and change of a workplace. A suitable environment for the approach to act within is also described—a local design shop.  相似文献   

20.
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