Credit Checking Market Setting up Gradually in China

This paper describes the present condition of credit checking industry and the market of Chinese, elaborates what has restricted Chinese credit development, presents the possible credit products of current Chinese credit checking market, forecasts the profits of credit checking service in China, and indicates the strategic steps of operation on credit checking service in China. ＂Credit＂ is one of the most popular words in the last two years in China, every thing related to credit will heat up, and the credit management is also becoming a burgeoning industry and comes to front. The development of economy has called for construction of the social credit system, which brings great business opportunities to the credit management agency. Therefore, the government, the industry and the private focus on this wealth dinner. Once deeming it as a great opportunity some far-sighted men bravely begin to take tough practice in the huge market. From then on, some credit management companies have come into being a part of the credit checking agent industry.

直流变频空调压缩机位置检测电路设计

介绍了基于单片机MB90F562驱动的直流变频空调室外控制器硬件结构,说明了各单元电路的功能,着重分析了无位置直流无刷电机换流过程及原理。结合相应等效电路,提出了位置检测方法,即1/2母线电压比较法,最后给出了该设计方案压缩机电流实测波形。

车辆空调性能实时检测系统研究

为满足生产实际中空调性能在线检测的要求,针对车辆空调性能的检测进行了研究,研制了一套在检测线上实时快速测量空调温度、湿度、风速等性能指标的系统。详细阐述了整个检测系统的硬件设计、软件设计、数据处理方法等,并在实地测量的基础上,得出了测量数据,绘制了相应的拟合曲线。实际应用表明,该系统使用方便、性价比高,具有广阔的推广应用前景。

宇通客车用松芝空调器控制面板接口功能及检测

介绍宇通客车用松芝空调器控制面板接口每个引脚的功能接线及检测方法。

凌志LS400轿车空调系统的故障诊断

本文叙述了凌志LS400轿车空调系统故障码的读取和空调系统故障的诊断,重点介绍了空调系统的故障检查。

一种过流保护器的电路分析

介绍三相电源空调所采用的一种过流保护电路的相关工作原理,分析电路设计的关键点,指导相关电路的设计及相关注意事项。

北美风管机专用压差启动压缩机的研发

北美风管机采用non-bleed TXV作为节流部件时,压缩机停机后TXV会自动关闭,导致转子压缩机无法满足停机3 min后重启的要求。在深入分析北美风管机系统停机后的压力变化基础上,结合转子压缩机的结构特点,分析研究基于间隙泄漏的被动压力平衡和基于压差控制的主动压力平衡机理,设计双单向阀+泄压阀的技术解决方案,完成性能、功能性及可靠性验证实验。结果表明:该方案压差启动阀可自动开关,可同时满足系统保压和压缩机3 min重启的要求。