中文摘要：

介绍一种测频仪的设计方案,并将此仪器应用到云南天文台丽江2.4m望远镜圆顶温度的测量工作中。详细阐述了PIC18F452自带的CCP模块的测频原理,同时给出了仪器软硬件的设计思路,最后在Proteus中对系统进行了仿真测试。测试结果表明了该方案的可行性。该仪器的研制也为西部望远镜的选址工作提供了一种有效的测量工具。

英文摘要：

A design of frequency-measurement meter is introduced.The instrument can be used in dome temperature measurement work in Lijiang,Yunnan Observation＇s 2.4m telescope.The working principle of PIC18F452 CCP module is introduced,the software and hardware are proposed.The system is simulated in Proteus and the test result shows that the method is feasible.Apparatus can provide an effective measurement tool for the western location of the telescope.