| Wearable devices are electronic devices that can be worn on a person’s body,and they are often equipped with sensors and other advanced technologies that allow them to collect and transmit data to other devices or the Internet.Wearable devices are becoming increasingly popular due to their convenience,portability and versatility,achieving a wide range of applications in areas such as health monitoring,motion monitoring,smart healthcare and human-computer interaction.However,current commercial wearable devices are usually just miniaturized forms of traditional electronic products,consisting of rigid,bulky flat components,which not only makes the device obtrusive,bringing poor wearable comfort,but also limits the conformal contact between the device and the human body,especially this incomplete contact can lead to inaccurate measurements.It is affected by body movement and environmental conditions,and has fewer application scenarios in human-computer interaction.In view of the existing problems of wearable devices,this dissertation designs different types of flexible sensors based on electronic skin with multi-dimensional sensing characteristics,and combines wearable technology to realize human-computer interaction applications in different scenarios.The main research results are as follows:(1)Based on silver sheet,PEDOT:PSS,and water-based polyurethane to prepare highly conductive and high-stretch bioelectrodes,a wearable EMG acquisition device was developed to capture EMG signals in a non-invasive way,and the EMG signals could be processed and analyzed by microcontroller.The system was tested in the application scenario of prosthetic limb control,and the accurate recognition of gestures was realized.At the same time,a mechanical arm with pressure feedback function was developed to grasp fragile objects.In addition,the movement of the robot can be controlled by myoelectric signals in VR environment.(2)A new type of flexible strain sensor based on ion gel,a wearable device for wireless human motion capture was developed to accurately monitor different types of human activities,including large strain signals generated by knee,elbow and neck bending and small strain signals generated by finger activities.The demonstration of real-time control of robots and robotic arms was realized by using the motion capture system,and monitoring human health information through mobile APPs.(3)Based on the PDGI/PAAM hydrogel photonic skin,a portable display array was developed,which can display text information and has good display effect.At the same time,the photonic skin is combined with the color sensor and the feedback control system.The color detection of the local background is completed on the car model,and the automatic matching of the car model and the background color is realized,which has better camouflage effect. |
