Optical fiber type wearable human body motion sensor

Abstract

The invention discloses an optical fiber type wearable human body motion sensor. The sensor comprises a micrometer optical fiber probe, an optical fiber sensing protection unit and a flexible packaging unit; the micrometer optical fiber probe is used for sensing the motion of the human body according to the change of a reflected light signal caused by bending deformation of a conical transition zone and a micrometer optical fiber zone due to the movement of the human body; the micrometer optical fiber probe can withstand the large-angle bending deformation of joint flexion and extension, and has higher flexibility and tensile strength. The invention discloses a preparation method of the micrometer optical fiber probe. The micrometer optical fiber probe is prepared by performing a fused biconical taper process on a common single-mode optical fiber, and the complexity of the preparation process is greatly reduced. The invention also discloses a multi-point detection device for the optical fiber type wearable human body motion sensor. Based on the principle of time division multiplexing, conductive optical fibers of different lengths are arranged to separate and divide reflected lightpulses of each wearable sensor to realize multi-point simultaneous detection, and the flexibility and versatility of the multi-point detection device are improved.

Description

technical field [0001] The invention belongs to the technical field of wearable optical fiber sensing, and more specifically relates to an optical fiber type wearable human motion sensor. Background technique [0002] The application of wearable sensors in the fields of human motion monitoring and health care has always attracted much attention, and they play an important role in human-computer interaction, rehabilitation therapy and athlete training. With the development of flexible conductive materials, the existing electrical wearable sensors generally combine conductive sensing units with flexible packaging materials. The electrical properties of the sensing unit change. However, the current leakage caused by insufficient insulation, the complexity of the preparation of the conductive sensing unit, and the inherent defects of being unable to resist electromagnetic interference are still problems that cannot be effectively solved by electrical wearable sensors at present...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the defects of the prior art, the object of the present invention is to provide an optical fiber wearable human body motion sensor, which aims to solve the problem of poor flexibility caused by the use of quartz optical fibers in the prior art

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