电子皮肤中的热电温度传感和调控

THERMOELECTRIC TEMPERATURE SENSING AND REGULATION IN ELECTRONIC SKIN

张双猛

11649143

硕士

材料工程

刘玮书

2018-06-04

2018-07-04

哈尔滨工业大学

深圳

温度传感与调控是电子皮肤中温觉仿真的重要技术组成部分，有重要应用前景。目前，相关研究相对较少，缺少良好的适用于电子皮肤的解决方案。热电技术可实现热能与电能的直接转换，具有固态无机械振动、环保无污染、稳定性高等优点。同时,利用热电技术可一体化协同实现温度传感、温差发电以及热量调控。将热电技术应用于电子皮肤中的温度传感与热量调控，可降低电子皮肤温觉仿真功能的系统复杂性。本文通过改进器件封装工艺，制备了具有较高柔性与良好稳定性的热电器件。采用聚酰亚胺基底结合电极设计与器件切割工艺，可实现器件单向或双向弯曲，利用 PDMS（聚二甲基硅氧烷）封装无基体热电器件，实现了热电器件的高柔性，满足了热电器件在电子皮肤应用中的力学需求。利用相变材料的储能特性与热电器件的直接热电能量转换特点，将新戊二醇（NPG）相变材料与柔性热电器件结合制备出了热量调控器件，并初步实验验证了其可有效自反馈调节温度变化，可实现 7℃温度调控。针对高灵敏的温度传感需求，本论文设计了基于高导热纤毛结构的纤毛热电温度传感器，利用高导热纤毛将环境中气流的温度变化灵敏传导至感温热电单元，同时配合对感温单元的绝热封装，有效降低了基体对感温单元的热影响。纤毛热电温度传感器件相比于无纤毛结构测温单元，响应时间缩短了 39%。

Temperature sensing and regulation is one of important technologies for the sense of electronic skin, which has important application in the future. However, there are few related researches and lack of good solutions for the temperature sense of electronic skin. Thermoelectric technology can realize the direct conversion of thermal energy and electrical energy. It has the advantages of non-mechanical vibration, environmental friend, and high stability. At the same time, the utilization of thermoelectric technology can be integrated to realize temperature sensing and heat regulation, which could reduce the system complexity of the electronic skin temperature simulation function.In this paper, thermoelectric devices with high flexibility and good stability are fabricated by optimizing the packaging process of devices. One-way or two-way bending of flexible thermoelectric devices is achieved by employing the polyimide substrate in conjunction with the electrode design and the device cutting process. PDMS (Polydimethylsiloxane) package thermoelectric devices are used to realize the high flexibility of the thermoelectric devices and meet the requirementsmechanical requirements for thermoelectric devices in electronic skin applications.Furthermore, combining the energy storage characteristics of phase change materials and the direct energy harvest advantage of thermoelectric devices, a heat regulation device was designed by using neoprene glycol as the heat storage while a flexible thermoelectric device was used as the energy conversion part. Our experiments have verified that they can effectively feedback and regulation when environment temperature is changed.In order to fully meet the requirements of the high sensitivity temperature sensing, a thermoelectric temperature sensor based on a highly thermally conductive cilia structure is proposed in this work. Here, fibers are used to conduct the heat of the air flow in the environment to the thermo-sensitive thermoelectric unit. As a result, the high thermal conductivity copper fibers are used. The thermal insulation package effectively reduces the thermal effect of the substrate on the temperature sensing unit. The copper ciliated thermoelectric temperature sensor shows 39% faster response than that without a cilia when heat air flowed over the electronic skin.

电子皮肤 热电 温度传感 热量调控 柔性器件

E-skin, thermoelectric temperature sensing heat regulation flexible device

中文

联合培养

南方科技大学

张双猛. 电子皮肤中的热电温度传感和调控[D]. 深圳. 哈尔滨工业大学,2018.