Thermodynamic optimization and calculation of the ErCl3–MCl (M=Li,Na,K,Rb,Cs ) systems

In this paper, the binary phase diagrams of the ErCl₃–MCl (M = Li, Na, K, Rb, Cs) systems were studied by the CALPHAD (CALculation of PHAse Diagram) approach. The modified quasi-chemical model in the pair-approximation for short-range ordering was used to describe the Gibbs energies of the liquid phase in the systems. From measured phase diagram data and experimental thermochemical properties, a series of thermodynamic functions has been optimized based on computer-assisted analysis. A discussion of thermodynamic functions for strong interaction binary systems was undertaken. The results showed that the calculated phase diagrams and optimized thermodynamic parameters are self-consistent.     

基于无线传感网络的道路照明系统

实现道路科学照明、绿色照明的关键问题是能够测量和控制到每一盏路灯,无线传感网络是解决这一问题最好的技术之一。选择Freescale公司MC13213芯片,设计了一种嵌入式无线通信模块,使整条道路的每一盏路灯自主联网,接受控制中心的指令,反馈路灯的各种状态,根据环境光强度和时段自动调节照明亮度,在保证道路照明质量和视觉舒适的情况下,节约电能20%~30%。     

基于DSP的矿用低压隔爆馈电开关智能保护器的设计

介绍一种应用于煤矿井下供配电系统的低压隔爆馈电开关智能保护器,该保护器以TMS320LF2407A型DSP为控制核心,不仅具有短路、过载、漏电闭锁、漏电保护、选择性漏电保护、断相及三相不平衡保护等功能,而且具有液晶显示、故障记忆与查询、联网通讯等功能。测试结果表明,该保护器动作灵敏、工作可靠,系统的设计方案是合理可行的。