基于LIN总线的汽车温控舒适系统的研制

介绍了汽车上利用LIN总线的温控舒适系统的基本结构,LIN总线的主节点利用LPC2119和μC/OS-II实现一个多任务运行环境,并分别编写了主、从节点的LIN驱动函数。试验证明,该系统工作正常、性能可靠,并具有低成本、低功耗、易于维护等特点。     

LIN总线协议分析

LIN总线是一种低成本的现场总线,可以在某些对通信速率要求不高的场合或作为CAN总线的子总线使用.本文介绍了LIN总线的特点,对其物理层和数据链路层的协议进行分析,并比较LIN总线和RS485总线的优缺点.     

A liquefied energy chain for transport and utilization of natural gas for power production with CO2 capture and storage – Part 3: The combined carrier and onshore storage

A novel energy and cost effective transport chain for stranded natural gas utilized for power production with CO₂ capture and storage is developed. It includes an offshore section, a combined gas carrier and an integrated receiving terminal. The combined carrier will transport liquid carbon dioxide (LCO₂) and liquid nitrogen (LIN) outbound, where natural gas (NG) is cooled and liquefied to LNG by vaporization of LIN and LCO₂ onboard the carrier. The same carrier is used to transport the LNG onshore, where the NG can be used for power production with CO₂ capture. The combined carrier consists of 10 cylindrical tanks with a diameter of 9.2 m and varying lengths from 14 to 40 m. The total ship volume is 13,000 m³. Assuming 85% capture rate of the CO₂, the maximum ship utilization factor (SUF) is 63.4%. Due to the combined use of the storage tanks, the SUF is decreased with 1.4% points to 62%. The ship is equipped with a bi-directional submerged turret loading for anchoring and loading of NG and unloading of CO₂. Two ships can deliver NG to and remove CO₂ from a 400 MW_net power plant, and still obtain continuous production of LNG offshore without intermediate storage. The investment cost for each gas carrier is 40 million EUR giving total transport cost of 16.9 EUR/tonne LNG. The cost for the offshore transfer system is 6.6 million EUR per tonne LNG, whereas the cost for onshore storage and loading system is 3.1 and 0.8 million EUR per tonne LNG, respectively. The total specific costs for the ship transport, including onshore storage, loading shipping and offshore unloading are 27.5 EUR per tonne LNG for a roundtrip of 5 days, including voyage, production of LNG, unloading, connecting and berthing.     

新型卡车CAN/LIN电气系统网络的研究

随着电子技术的高速发展和广泛应用,实现汽车电子化、智能化和网络化是现代汽车发展的必然趋势。根据某新型卡车的实际需求,研究并构建了CAN／LIN总线的卡车电气系统网络。在简要介绍了电气系统网络的组成与功能之后,分析了CAN、LIN总线的特点,并根据卡车的实际需求制定了相应的应用协议,最后给出了网络系统软硬件设计的具体方案。实际应用和测试结果表明,本系统具有良好的可靠性和稳定性。     

舌像颜色校正算法对比研究

The color of tongue coating is an important feature in tongue diagnosis of traditional Chinese Medicine. In order to solve the problem of color distortion in image acquisition of TCM tongue image in natural environment, when shooting the tongue image, the standard color card is placed beside the tongue to shoot together, and the polynomial regression algorithm is used to correct the color of the image. Experimental results show that the proposed method is more accurate than perfect reflection algorithm, gray world algorithm, color deviation detection and color correction algorithm.     

基于ATmega8的电动车蓄电池智能管理系统设计

本文以ATmega8单片机为核心,设计了一种分布式、模块化、通过LIN总线通讯、具有智能化充电的电动车蓄电池管理系统,实现了对多组蓄电池的有效监测和管理,其智能化充电的思路值得以后继续深入研究和推广.     

基于并行工程绿色设计的分析与研究

针对传统串行式机电产品设计模式所存在的问题，提出产品开发中应用并行式绿色设计方法，以缩短产品开发周期、降低成本、提高质量和保护环境，开发绿色机电产品。     

CAN/LIN总线技术在车内网络中的应用研究

随着汽车内电子设备的迅速增加,车内电子网络应运而生。详细介绍了CAN总线和LIN总线技术特点,并着重研究了CAN/LIN技术在汽车电子网络中的应用。     

质本洁来还洁去——林黛玉之"凄美"形象艺术探析

<红楼梦>是中国古典小说的巅峰之作,别于其他作品的关键是弘大的叙事结构和深刻的悲剧性.曹雪芹对林黛玉"凄美"艺术形象的描绘突破了历史固定的程式.本文试图摆脱前人用阶级分析的方法开展艺术评论,着重文本和艺术研究.一是从"凄凉"的角度分析林黛玉性格形成的原因,"凄"则主要表现在林黛玉的身世凄凉、纤弱多病、葬花、驻足潇湘馆、直至泪尽而夭;二是从"纯美"的角度分析林黛玉令人怜爱的表现,"美"则主要表现在她弱柳扶风的含羞之态、率真善良的处世态度、超凡脱俗的艺术才华等方面.两者相互融合就构成了林黛玉"凄美"的悲剧形象.     

衍生气相色谱法分析二丁基二氯化锡

提出了以乙基省化镁作为衍生化试剂,将二丁基二氯化锡转化成低沸点、易汽化的二丁基二乙基锡,采用四西基锡作的标,测定二丁基二氯化锡含量的气相色谱法。方法具有分析速度快、准确度高、重现性好等优点。此方法回收率为９７．２％～１００．８％,相对标准偏差Ｒｓ,ｄ在０．６８％以内。