Research on Human Behavior Intention Perception Method Based on Wearable Sensors

Abstract

With the increasing aging of the population, exoskeleton robots, gait assistance in the medical field, and condition monitoring in the rehabilitation field have been widely concerned by scholars. Accurate recognition of human gait and the perception of behavioral intention are essential for understanding the human motion state. Addressing issues of intricate sensor layout, low resolution of the plantar pressure sensor, and inaccurate gait classification, this paper presents a wearable sensor-based method for perceiving human behavior intentions. Firstly, a foot motion data acquisition system is built, and the foot motion feature data are obtained by combining the self-designed tactile pressure sensor and the Inertial Measurement Unit. Secondly, the rule of human movement is analyzed and the phase of gait in different motion modes is divided. Then, considering the temporal characteristics of human motion, the behavior pattern recognition algorithm is constructed by combining a Convolutional Neural Network and a Long Short-Term Memory network. Simultaneously, a Convolutional Neural network is established to recognize gait information and enhance the recognition accuracy of human behavior. Finally, the experiment of human motion intention recognition is carried out. The experimental results show that the proposed method has an average recognition accuracy of 96% for human motion patterns, and an average recognition accuracy of 93.38%, 94.57%, and 92.57% for the gait phase in various modes, respectively. The experimental results show that this method can meet the requirements of common human behavior recognition.

Keywords

• Intention perception
• gait recognition
• foot motion data
• wearable sensors