Intelligent sensing boots for measuring gait and step speed of human body

Abstract

The invention provides a pair of intelligent sensing boots for measuring gait and step speed of a human body. Each intelligent sensing boot comprises a boot body, a measuring circuit and a host computer, wherein pressure sensors are attached to an insole of the boot body and used for measuring pressure signal data of key parts of the sole part; the measuring circuit is fixed on the boot body and comprises a single chip microcomputer, an inertial measurement module, a power supply module and a signal conditioning module, and the power supply module is used for supplying working voltage to the whole circuit; the inertial measurement module is used for measuring three-axis acceleration and angular speed data; the signal conditioning module is used for converting pressure signals collected bythe pressure sensors into voltage signals; the single chip microcomputer is used for packaging and transmitting the voltage signals, three-axis acceleration and angular speed to the host computer; thehost computer judges the gait with a fuzzy logic algorithm and calculates the current step speed with a recurrent neural network algorithm. With the adoption of the intelligent sensing boots, the problem of lower step speed measurement accuracy of a mid-low inertial measurement unit adopted by an intelligent mobile terminal in the prior art is solved.

Description

technical field [0001] The invention belongs to the field of information technology and digital signal processing, and in particular relates to an intelligent sensor boot for measuring gait and pace of a human body. Background technique [0002] At present, an important problem that people encounter in pedestrian inertial navigation is to improve the measurement accuracy of pedestrian walking speed. Taking smart phones as an example, current smart phones generally have accelerometers and GPS. Smartphones are currently able to calculate pedestrian walking speed using accelerometers or by fusing accelerometer and GPS data. The accuracy of the walking speed measured by most smartphones is not high, which is limited by the accuracy of its built-in acceleration sensor. In addition, the irregular shaking of the smartphone relative to the wearer during walking also brings large errors. [0003] Chinese patent 200510088617.4 (publication number CN1723848A) discloses using the outp...

AI Technical Summary

Problems solved by technology

Inevitably, when using low-end inertial measurement units, the accuracy of the speed measurement results will be limited by their large noise and drift

And if you choose a high-end inertial measurement unit, it will bring a significant cost increase

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