柴油机工作时,活塞顶部承受着燃气压力、往复惯性力等机械载荷和由温度梯度或结构因素造成的热载荷.这些载荷是引起活塞损坏的主要原因之一。为了研究活塞结构的合理性,延长其使用寿命,必须对工作活塞进行连续温度和应力测量,以了解活塞工作时的应力状态和温度变化。该项试验的关键在于信号传递的可靠性.目前国内外信号传递的方法有遥测、挠性引线机构和刚性引线机械等,但都 Diesel engine work, the piston top to withstand gas pressure, reciprocating inertial force and other mechanical loads and temperature gradient or structural factors caused by the heat load of these loads is caused by one of the main piston damage. In order to study the rationality of the piston structure and extend its service life, the working piston must be continuously temperature and stress measurements to understand the stress state and temperature changes of the piston work. The key of this experiment lies in the reliability of signal transmission.Nowadays, the methods of signal transmission at home and abroad are telemetry, flexible lead mechanism and rigid lead mechanism,