Application Strategies of Automatic Addressable Single-Lamp Control Technology in Tunnel Lighting

The article mainly studies the application strategy of automatic addressable single-lamp control technology in tunnel lighting.It encompasses an introduction to this technology,an analysis of the tunnel lighting system using automatic addressable single-lamp control technology,and outlines the main development direction for this technology in modern tunnel lighting.The aim is to offer insights that can inform the rational deployment of this technology,thereby enhancing the lighting control effectiveness in modern tunnels and meeting their specific lighting requirements more effectively.

Development of single-chip fuzzy controller based on FFSI in binary

Length and concise structure of fuzzy logic reasoning program and its real-time reasoning characteris-tic have their effect on the performance of a digital single-chip fuzzy controller. The control effect of a digitalfuzzy controller based on looking up fuzzy control responding table is only relative to the table and not relative tothe fuzzy control rules in the practical control process. Aiming at above problem and having combined fuzzy log-ic reasoning with digital operational characteristics of a single-chip microcomputer, functioning-fuzzy-subset in-ference (FFSI) in binary, in which triangle membership functions of error and error-in-change are all represen-ted in binary and singleton membership functions of control variable is binary too, has been introduced. The cir-cuit principle plans of a single-chip fuzzy controller have been introduced for development of its hardware, andthe primary program structure, fuzzy logic reasoning subroutine, serial communication subroutine with PC andreliability design of the fuzzy controller are all discussed in detail. The control of indoor temperature by a fuzzycontroller has been conducted using a testing-room thermodynamic system. Research results show that the FFSIin binary can exercise a concise fuzzy control in a single-chip fuzzy controller, and the fuzzy controller is there-fore reliable and possesses a high performance-price ratio.

Gas concentration monitoring system for small and medium-sized coal mines based on gas-sensing detection and single-chip control

This paper is aimed at the actual conditions of disaster caused by gas in small and medium-sized coal mines. A new gas concentration monitoring system for coal mines is developed on the basis of gas-sensing detection and single-chip control. The monitoring system uses the tin oxide as the main material of N-type semiconductor gas sensors, be- cause it has good sensitive characteristics for the flammable and explosive gas （ such as methane, carbon monoxide）. The QM-N5-semiconductor gas sensor is adopted to detect the output values of the resistance under the different gas con- centrations. The system, designedly, takes the AT89C51 digital chip as the core of the circuit processing hardware structure to analyze and judge the input values of the resistance, and then achieve the control and alarm for going beyond the limit of gas concentration. The gas concentration monitoring system has man）, advantages including simple in struc- ture, fast response time, stable performance and low cost. Thus, it can be widely used to monitor gas concentration and provide early wamings in small and medium-sized coal mines.

Research on Control System of Spindle Drive for High Speed Spinning Machine

Through analyzing the principle of spindle drive of winding mechanism for high speed spinning machine,the article not only describes a kind of mode of spindle drive for take-up motion on the basis of control method of constant velocity winding, but also introduces the design technique of software and hardware for the control system of mechatronics of spindle drive mode for take- up motion on the basis of constant velocity winding for high speed spinning machine with single-chip microcomputer. The mathematical model to describe the spindle rotating speed is established. It is an important technology for high speed spinning machine and provides a feasible application way.

Design and implementation of an efficient SDRAM controller for HDTV decoder

A high performance SDRAM controller for HDTV decoder is designed. MB-based （ macro block） address mapping, adaptive-precharge and command interleaving are adopted in this controller. MB-based address mapping reduces the precharge operations of the video processing unit in one access; adaptive- precharge avoids unnecessary precharge operations; while command interleaving inserts the precharge and activate commands of the next access into the command sequence of the current access, thus reduces the no operation （NOP） cycles. Combination of these three schemes effectively improves the SDRAM performance. Compared with precharge-all scheme, adaptive-precharge and command interleaving reduce the SDRAM overhead cycles by 70% and increases SDRAM performance by up to 19.2% in the best case. This controller has been implemented in an AVS SoC and the frequency is 200MHz.

Dual-Port Content Addressable Memory for Cache Memory Applications

Multicore systems oftentimes use multiple levels of cache to bridge the gap between processor and memory speed.This paper presents a new design of a dedicated pipeline cache memory for multicore processors called dual port content addressable memory(DPCAM).In addition,it proposes a new replacement algorithm based on hardware which is called a near-far access replacement algorithm(NFRA)to reduce the cost overhead of the cache controller and improve the cache access latency.The experimental results indicated that the latency for write and read operations are significantly less in comparison with a set-associative cache memory.Moreover,it was shown that a latency of a read operation is nearly constant regardless of the size of DPCAM.However,an estimation of the power dissipation showed that DPCAM consumes about 7%greater than a set-associative cache memory of the same size.These results encourage for embedding DPCAM within the multicore processors as a small shared cache memory.

RESEARCH ON A REAL-TIME CONTROL SYSTEM OF LOW POWER DISSIPATION FOR CONTINUOUS CYCLIC PERITONEAL DIALYSIS(CCPD) CYCLER

A low power dissipation control system for continuous cyclic peritoneal dialysis (CCPD) cycler and its characteristics are reported. Combined withhemodialysis and renal transplantation, peritoneal dialysis is used mainly for thetreatment of renal failure. CCPD has been developed during 1980＇s. It provided automatic dialysis procedures during the night to avoid interruptions in patients＇dailyroutine. Furthermore,there is a remarkable decrease in peritonitis occurance usingCCPD. The control system is a critical part for CCPD cycler. The system is approvedto be reliable and flexible in practical experiments. When AC power failure,the system can still ensure the completion of dialysis.

地名地址数据增量更新的质量控制

研究了地名地址数据的增量更新流程和特点,针对地名地址数据变化迅速、数据海量且属性繁杂的情况,以“天地图·广东”数据更新和广东省地名地址库建设项目生产过程中遇到的数据质量问题和易错点为切入点,探讨了地名地址数据增量更新的质量控制方式,旨在提高数据更新的成果质量和生产效率,同时促进技术设计和生产流程的优化。同时,通过该研究为类似的地理空间数据增量更新提供质量控制的参考。

某办公楼项目泛光照明配电与控制设计

阐述某办公楼项目建筑泛光照明配电原则和控制方式。根据建筑及照明方案,结合LED光源特点,确定采用LED灯具。考虑灯具的空间分布及容量等因素,确定配电设计。采用基于现场总线控制技术的智能照明控制,如采用DMX512系统等对灯光亮度、色温和色彩等参数进行调节,展现夜间建筑立面肌理效果。

基于CAN总线的智能插秧机通信系统应用研究

中国制造2025计划将智能农业装备列为关注发展领域,智能农业装备的热点研究问题就是设备的自动化。为此,针对已有插秧机作业过程中缺乏时效性评价系统、检测技术精度有待提高、通信方式不易扩展等一系列问题,提出了基于CAN总线的智能插秧机通信系统应用研究。通过GPS接收器检测现场情况及插秧机工作实况,通过CAN总线分布方式优化上位机和下位机之间的通讯及指令传输,基于ISO11783标准制订了智能化总线通信协议,并通过软件系统进行人机交互,实现插秧机位置实时监控、插秧机作业面积实时统计等功能。在此,分别进行了作业农田面积统计试验、直线道路路径跟踪试验及水稻农田作业试验。结果表明:基于CAN总线的智能插秧机通信系统能够保障数据实时传输,能实现插秧机精准远程操作,且安全自主完成路径跟踪、速度变换、转向及插秧作业等一系列作业,满足目前插秧作业的各种需求,具有实用性。

二维码视觉定位在堆垛机定位控制中的应用

定位控制是堆垛机控制系统关键组成部分,运动过程中位置数据反馈直接影响堆垛机的速度控制及定位精度控制。文中介绍里定位控制的相对认址和绝对认址方式,通过分析这2种认址,阐述了PLC控制变频器调速、网络通信方式、二维码传感器和二维码定位的绝对认址方式,从而实现了堆垛机定位控制平滑调速和精确定位以及定位控制的安全保护。

基于DALI调光系统的某指挥调度大厅照明设计

指挥调度大厅作为重要的决策和控制中心,其照明设计对于保障工作效率、人员舒适度和信息准确传递至关重要。以某指挥调度大厅照明系统设计为例,重点围绕大厅软膜天花照明整体设计方案、照度计算、DALI调光系统等方面,对相关特点、要点、难点进行了论述和分析,旨在为类似指挥调度大厅等大面积场所的照明设计提供参考和借鉴。

基于CAN总线的分布式插秧机导航控制系统设计

为了提高插秧机自动导航系统的可靠性,设计了一种基于CAN总线的分布式控制系统。系统由1个主控节点和3个从节点组成。主控节点采用AT91SAM9261 ARM处理器,负责根据RTK GPS数据和电子罗盘数据决策适当的控制指令;3个从节点选用C8051F040单片机,分别实现转向控制、变速控制以及插秧机具升降控制;并根据CAN2.0总线协议,制定了插秧机自动导航系统主从节点数据传输通信协议。控制系统在久保田SPU-68型插秧机上进行了道路跟踪试验和田间作业试验,结果表明,采用基于CAN总线的嵌入式分布式导航控制系统保证了数据实时传输,插秧机能够自主完成路径跟踪、转向、变速以及插秧等操作。其中道路直线跟踪误差小于0.05 m,田间作业试验直线跟踪误差不大于0.2m,插秧行距为30cm,能基本满足水田插秧作业要求。

适用于ZigBee网络的借地址分配算法

无线传感器网络使用ZigBee技术默认的分布式地址分配机制(DAAM)为节点分配地址时没有考虑到网络拓扑结构的优化,造成了网络深度的浪费。为此,提出一种ZigBee网络分布式借地址分配(DBAA)算法,通过为节点分配两跳通信范围内的空闲地址优化网络拓扑,从而提高节点获得地址的成功率。理论分析和仿真结果表明:DBAA算法在地址分配成功率、平均通信开销和平均耗时方面性能优于DAAM和SLAR方案。

可重构信息通信基础网络体系研究

提出了"可重构网络"思想并建立可重构信息通信基础网络体系,然后在可重构网络功能参考模型的基础上分别创立了网络元能力理论、多态寻址路由机制、网络重构机理和安全可管可控机理,从而为构建一个支持目前业务和未来新业务的不同服务质量需求,功能灵活扩展,满足泛在互联、融合异构、可信可管可扩需求,支持现有网络兼容演进和适于规模应用的新型网络通信信息基础设施提供了一种解决途径。

基于CPLD的LED显示屏异步控制系统设计

介绍在LED显示屏异步控制系统中基于CPLD的设计方法,对实际应用中涉及的分组分块的概念和地址变换进行了说明。采用模块化设计方法对CPLD进行设计,并给出了硬件描述语言的具体结构。

IEEE802.11访问控制与MAC地址欺骗

对无线网络的访问控制机制进行了讨论,分析了目前所采用的IEEE802.11B无线网络设备在访问控制方面的不完善性,以及MAC地址访问控制的漏洞。采用序列号分析法对MAC地址欺骗进行检测,从而对无线网络的非授权访问进行监控。

基于PLC的微波加热器温度控制系统设计

设计了一套PLC控制的微波加热器温度控制系统。以工业高功率微波加热器为研究对象,用S7-200PLC及模拟量输入、输出模块组成基本控制单元,使加热器内温度保持恒定。针对微波加热器内温度系统的大惯性、非线性特征,采用模糊控制算法来对温度进行处理,克服了传统PID算法参数调整复杂、超调量大的缺点。实验结果表明,对温度采用模糊控制能获得较好的稳态精度和动态特性,能够满足工业领域恒温加热的要求。

基于ARP协议的局域网访问控制

提出了一种基于地址解析协议(ARP)的局域网访问控制方案。通过实时捕获、分析了网络数据报发现登录局域网络的非法主机,采用ARP协议机制杜绝其对局域网内合法主机的非法访问;利用服务器对网络主机IP地址、MAC地址和其他辅助信息的多重认证,以及网络主机客户端ARP缓存机制实现网内合法主机之间的限制访问,从而有效地保护局域网资源。

现代数据中心网络资源管理技术分析与综述

现代数据中心网络结构特征和应用模式的深刻变革,给网络资源管理带来了全新的挑战。地址自动配置技术、传输控制技术、流量管理技术以及虚拟化管理技术等是现代数据中心网络资源管理的重要内容,也是近年来学术界研究的重要方向。结合当前的研究现状,对以上几个方面的最新研究成果进行分析综述,并就网络资源管理未来的发展趋势进行展望。