高温材料的熔融温度测试研究

Study of Detecting Instrument for High Temperature Material's Melting Point

提出了一种利用电子转换开关实现的热丝法测温方案，成功地实现了热电偶加热状态和检测状态的转换；对加热控制电路和检测电路进行了分析；用实验验证了该装置的可靠性。

A temperature detect scheme of hot-wire method with electronic switching is given. The change of heating state and sensing state for thermocouple is completed successfully. The comparator controlling circuit and detecting circuit are analyzed. The feasibility of the detecting instrument are proved with experiments.