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阐述高层建筑安全通道的监控系统设计,包括核心控制模块、实时监控模块、节能照明模块、实时警报模块组成,探讨红外传感器、温度传感器、湿度传感器、烟雾传感器和控制单元,监控高层建筑安全通道的实时状况,从而保证高层建筑内通道的安全。 相似文献
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单片机的应用非常广泛。学生在学习单片机时可以因地制宜的利用常用的性价比高的单片机进行设计,这样不仅加强了初学者对于单片机的掌握,同时是制作出来的小产品又能运用在日常生活中,这就大大提高了初学者的学习兴趣。"基于AT89C52单片机的八路抢答器的设计"就是基于这样的目的产生。该抢答器不仅可以满足一般竞赛需求,具有判断精确,操作简单,功能丰富的特点,同时制作简单,价格便宜,适合学生自行动手制作。 相似文献
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Based on the optimal velocity car-following model, in this paper, we propose an improved model for simulating train movement in an urban railway in which the regenerative energy of a train is considered. Here a new additional term is introduced into a traditional car-following model. Our aim is to analyze and discuss the dynamic characteristics of the train movement when the regenerative energy is utilized by the electric locomotive. The simulation results indicate that the improved car-following model is suitable for simulating the train movement. Further, some qualitative relationships between regenerative energy and dynamic characteristics of a train are investigated, such as the measurement data of regenerative energy presents a power-law distribution. Our results are useful for optimizing the design and plan of urban railway systems. 相似文献
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Optimizing train movement has a great significance for railway traffic. In this paper, based on the optimal velocity car-following model, we propose a new simulation model for optimizing train movement in railway traffic. Here a kind of single-track railway is considered. Our aim is to reduce the energy consumption of train movement and ensure the train being on time by controlling the velocity curve of train movement. The simulation results indicate that the proposed model is effective for optimizing train movement. In addition, some major characteristics of train movement can be well captured. This method provides a new way to optimize train movement in railway traffic. 相似文献
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设计合成了一种新型灵敏的荧光化学探针[Ir(bzq)2(L1)](PF6)(bzq = 苯并喹啉,L1 = 4''-甲基-2,2''-联吡啶-4-甲醛肟)并进行了详细表征。将该配合物用于对次氯酸盐(ClO-)的荧光测定,发现加入ClO-后,探针溶液的荧光显著增强,在365 nm紫外灯下由暗棕色迅速转变为明亮的橙黄色,可能是配体L1中的肟作为反应位点被ClO-氧化为羧酸,抑制了非辐射衰变过程从而使探针发射出强荧光。在优化实验条件下,探针[Ir(bzq)2(L1)](PF6)的荧光强度与ClO-浓度在0.1 ~ 210 μmol/L范围内呈良好的线性关系,检出限为3.08 nmol/L。荧光探针对ClO-的选择性较好,其它可能的共存离子不干扰测定。采用该方法测定了当地河水中的次氯酸盐,加标回收率为92.4% ~ 103%,结果令人满意,表明该方法可用于实际样品中ClO-的测定。 相似文献
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对现今高频电路实验教学的实际问题,本文应用Matlab和Multisim软件设计了一个高频电路实验仿真系统,希望可以规避传统电子类实验模式中易受外界因数干扰造成的实验问题;提高传统电子类实验的效率;巩固理论教学的成果。 相似文献