Research on Packaging Technology of Double-Redundant Fast-Response Platinum Resistance Temperature Sensor
In view of the risk of temperature sensor failure in the aviation field,the dual-channel redundancy design is carried out,the high-precision thin film resistor is used as the temperature sensing chip,the dual-channel independent collection and output temperature signal is established,the high-performance ultra-thin insulating material is used for insulation protection,and the thermal conductivity silicone grease with high thermal conductivity and alumina powder are selected for thermal conductivity potting combined with potting to speed up the dynamic response time.The pressure resistance of the front-end protection tube of the sensor was verified by ANSYS finite element simulation,and the sensor sample was processed through the packaging process,and the test response time of the sample was not more than 3 s,and the dual-channel static output error was less than 0.3℃.
万方数据
维普
