机车温度控制系统的研制

在总结传统的功率控制方法的基础上，对可控硅的过零触发作了一些新的探讨，实现了机车锅炉温度控制系统。引入Ｍｏｔｏｒｏｌａ公司的新型过零器件ＭＯＣ３０６１，该器件集光电隔离、过零检测、过零触发功能于一身，且器件尺寸小，极大地降低了电路的复杂程度。同时在系统的前端温度测量方面，使得了Ｄａｌｌａｓ公司的新型数字温度测量器件ＤＳ１８２０，其转换速度快，而且外接口简单，由于其向外输出的是串行数据，传统测量上的

Development of Train Temperature Control System

The train boiler temperature control system is realized. On the basis of summarizing traditional power control methods,the authors put for ward some zero-crossing triggering technique for SCR,and introduce a new-type zero-crossing device from Motorola Company. The device used integrates itself the light-electronic isolation,the zero-crossing detection and the zero-cros sing triggering functions, with small size which greatly reduces the whole circ uit complexity. What's more,in the system forward temperature measurement field ,the new-type digital temperature measuring device from Dallas Company is full y used,with not only its high switch speed,but also its simple outer interface . Amplifiers and A/D convertors,usually used in the traditional measurement,ar e gotten rid of,which results from its series data output. All these advantages are incomparable analogied compared with the traditional temperature measuring interface circuit.