Key Laboratory for the Physics and Chemistry of Nanodevices, Department of Electronics and Center for Carbon-Based Electronics, Peking University, Beijing 100871, China.
Hunan Institute of Advanced Sensing and Information Technology, Xiangtan University, Hunan 411105, China.
ACS Nano. 2021 Jun 22;15(6):9238-9243. doi: 10.1021/acsnano.1c03408. Epub 2021 Jun 14.
The somatosensory system helps the human body to become aware of various stimuli and to interact with its surroundings. Humans are able to identify and to process abundant sensory information quickly due to their unique perception characteristics. As the largest sensory organ, skin has a large number of discrete receptors to sense and to transform stimuli of touch, pressure, pain, temperature, . into electrical signals, which are preprocessed at various levels before reaching the brain, greatly reducing the computational burden on the central nervous system. In addition, the conduction speed varies for different stimulus information, which simplifies the parallel processing of a variety of information. In this Perspective, we discuss a bioinspired design for a flexible smart sensor system by simulating the human somatosensory system. In this design, sensors with selective responses, signals separated in time sequences, and hierarchical information processing are adopted to optimize the sensing and perceiving processes, to reduce power consumption, and to improve the speed of a flexible smart sensor system.
感觉系统帮助人体感知各种刺激并与周围环境交互。人类由于其独特的感知特性，能够快速识别和处理大量的感觉信息。皮肤作为最大的感觉器官，拥有大量离散的感受器，能够感受和转换触觉、压力、疼痛、温度等刺激，并将其转化为电信号，这些信号在到达大脑之前会在各个层次进行预处理，从而大大减轻中枢神经系统的计算负担。此外，不同刺激信息的传导速度也不同，这简化了多种信息的并行处理。在本观点中，我们通过模拟人体感觉系统来讨论一种用于柔性智能传感器系统的仿生设计。在这种设计中，采用了具有选择性响应、时间序列分离信号和分层信息处理的传感器，以优化传感和感知过程，降低功耗，并提高柔性智能传感器系统的速度。
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