Integration And Application Of Flexible Temperature Sensor In Triboelectric Nanogenerator

In response to the needs of the emerging electronic industry such as the Internet of Things for the miniaturization,long time,and flexibility of deployment of electronic devices,recent research on the micro-energy harvesting is increasing.Micro energy harvesting technology can realize the conversion of other types of energy into electrical energy by capturing weak energy in the environment,thereby providing working energy for low power consumption and small terminal equipment.Nanogenerators,as a representative type of micro-energy harvesting device,can convert some tiny mechanical and thermal energy in the surrounding environment into electrical energy for storage or use.Among various types of nano-generators,the triboelectric nano-generator(TENG)that converts mechanical energy into electrical energy through the nano-level triboelectric effect has the advantages of low cost and easy assembly,and has been most widely researched and applied.In the application research of TENG,the action mechanism of environmental conditions on the performance of TENG is one of the important issues to ensure that TENG can work normally in actual application scenarios.If a series of sensor devices can be integrated into TENG,the working environment characteristics of TENG can be monitored in situ in real time,providing important data references for the research on the related action mechanisms.However,according to the working principle of TENG,the TENG device will be deformed when it is used,so if the conventional rigid sensor device is integrated with TENG,it will affect the normal operation of TENG.In recent years,with the development of flexible electronic technology,flexible sensor devices have also developed rapidly.Because the flexible sensor device itself has a certain deformability,after it is integrated into TENG,the sensor device can be conformally integrated with TENG,without affecting the normal operation of TENG.Therefore,the use of flexible sensor devices to conduct research on the environmental sensitivity of TENG is expected to achieve results that are difficult to achieve with conventional rigid sensor devices.In view of the above research background,this paper designs and prepares a flexible temperature sensor device based on the realization of a movable electrode triboelectric nanogenerator.The flexible temperature sensor device is integrated into the triboelectric nanogenerator,and the influence of temperature on the performance of the triboelectric nanogenerator is explored.The main points of this thesis are as follows:1.Designed and implemented a movable electrode type triboelectric nanogenerator.The nano-generator has good output performance.At its resonant frequency,the output of TENG can reach maximum.In addition,a sensor array system composed of four TENG units was constructed to realize self-powered locating based on the nano-generator.2.Designed and prepared a flexible temperature sensor device and completed a flexible temperature sensor device containing a liquid metal cavity.The performance of the two devices was characterized.Moreover,by introducing liquid metal,the response speed of the sensor device is significantly improved.3.The flexible temperature sensor device is integrated in the movable electrode triboelectric nanogenerator.The influence of the ambient temperature and the temperature of the nanogenerator device on the output performance of TENG is explored.A rise in temperature will cause a drop in TENG output voltage.As the temperature rises higher,the magnitude of the output voltage drop will be growing.