摘要：曝气控制是污水处理过程中的关键环节,文中分析了曝气控制的基本原理,提出了以溶氧量为控制参数,设计了一套污水溶氧量监控系统。将 CAN 现场总线和变频器应用在监控系统中,给出了具体的设计思想与实现方法。在实际应用中该方法取得了良好的效果。

摘要：针对CAN现场总线和Modbus协议的特点熏给出一种应用单片机技术设计CAN现场总线与Modbus总线的转换器的方法。实现了将Modbus设备连接到CAN现场总线网络中,并具体的介绍了转换器硬件结构和相应的软件程序流程,实际应用效果良好。

摘要：Mechanoluminescent(ML)materials can directly convert external mechanical stimulation into light without the need for excitation from other forms of energy,such as light or *** alluring characteristic makes ML materials potentially applicable in a wide range of areas,including dynamic imaging of force,advanced displays,information code,storage,and anti-counterfeiting ***,current reproducible ML materials are restricted to sulfide-and oxide-based *** addition,most of the reported ML materials require pre-irradiation with ultraviolet(UV)lamps or other light sources,which seriously hinders their practical ***,we report a novel ML material,MgF_(2):Mn^(2+),which emits bright red light under an external dynamic force without the need for pre-charging with UV *** luminescence properties were systematically studied,and the piezophotonic application was *** interestingly,unlike the well-known zinc sulfide ML complexes reported previously,a highly transparent ML film was successfully fabricated by incorporating MgF_(2):Mn^(2+)into polydimethylsiloxane(PDMS)*** film is expected to find applications in advanced flexible optoelectronics such as integrated piezophotonics,artificial skin,athletic analytics in sports.

摘要：针对当前污水处理过程中加药控制效率低、絮凝效果不稳定的缺点,开发了一种具有CAN总线通讯功能的加药自动控制系统。并介绍了污水处理过程中加药系统的工作原理和基本结构,对控制系统的硬件电路和软件流程进行了详细说明。在实际运行中取得良好的应用效果。

摘要：以CaCO3(99.9%)、Li2CO3(99.9%)、Na2CO3(99.9%)K2CO3(99.9%)、H3BO3(99.9%)、Sm2O3(99.9%)为原料,按所设计的化学计量比称取以上原料,在玛瑙研钵中混合均匀并充分研磨,装入刚玉坩埚,采用固相法制备LiCaBO3:Sm3+材料;通过美国XRD6000型X射线衍射仪和日本岛津RF-540荧光分光光度计对材料的性能进行表征,所有测量均在室温条件下进行。LiCaBO3:Sm3+材料的发射光谱由三个橙红色发射峰组成,主峰位于561,602,651nm,分别对应Sm3+的4G5/2→6H5/2、4G5/2→6H7/2和4G5/2→6H9/2跃迁;监测602nm发射峰,得到其激发光谱由320～420nm的宽激发带组成。由激发和发射光谱看出,LiCaBO3:Sm3+能够有效地被紫外LED芯片激发,发射红色光。研究了Sm3+浓度(x)对LiCa1-xBO3:xSm3+材料发射强度的影响,结果表明:随Sm3+浓度的增大,发射强度先增强后减弱,Sm3+掺杂摩尔分数为3%时,发射强度最大,依据Dexter理论,计算得出其浓度猝灭机理为电偶极-偶极相互作用。掺入电荷补偿剂Li+、Na+和K+均提高了LiCaBO3:Sm3+材料的发射强度。