The invention relates to a self-power
respiration sensor based on a bionic
nasal cavity structure, and a preparation method thereof, and belongs to the technical field of sensors. An
electrode layer covers on the inner wall surface of an insulating cylinder; friction
electrification units arranged along the inner normal direction of the inner wall surface of the insulating cylinder in a way of being similar to
nasal hair are arranged on the
electrode layer and are arranged in order so as to form an
electricity generation array; each friction
electrification unit comprises a flexible friction layer, a conducting layer and a sensitive thin film layer; under the drive of an
respiratory flow, the adjacent friction
electrification units form contact-separation circulation, so that an inductivecharge is produced, and an
electric signal is output to an external detection circuit through the
electrode layer. Compared with a traditional sensor, according to the self-power
respiration sensor based on the bionic
nasal cavity structure provided by the invention, the
miniaturization of the device is ensured, and meanwhile, the output
electric signal is remarkably improved through increasing the friction contact area, so that the detection accuracy is favorably improved; the device is novel and simple in structure design, low in cost, portable, easy to carry, simple and easy to get materials, and convenient to process; the sensor provided by the invention does not require a special environment, and is high in compatibility and free of being limited in application occasions.