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Magnetic positioning gait analysis system

An analysis system and magnetic positioning technology, applied in the field of gait analysis in biomedical engineering, can solve the problems of large data processing, expensive equipment and high environmental requirements, and achieve the effects of low cost, convenient operation and simple structure

Active Publication Date: 2014-11-05
NANJING MEDICAL UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] Technical problem to be solved: Aiming at the high environmental requirements, large amount of data processing, and expensive equipment in the prior art, the present invention proposes a gait analysis system based on magnetic positioning

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Embodiment Construction

[0020] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0021] Such as figure 1 , 2 , 3, the present invention provides Magnetic positioning gait analysis system , including magnetic induction detector, signal conditioner, MCU controller, upper computer (PC), magnetic source (measured object), and power supply module.

[0022] magnetic induction detector It includes a three-axis magnetic sensor array and a calibration circuit, and the three-axis magnetic sensor array calibrated by the calibration circuit receives magnetic field signals around the magnetic source.

[0023] signal conditioner Including analog signal processors and digital signal processors;

[0024] The analog signal processor includes a signal preprocessing circuit and a low-pass filter circuit, the analog signal processor amplifies and filters the output signal of the magnetic induction detector, and the analog signal processor uses a sec...

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Abstract

The invention discloses a magnetic positioning gait analysis system, which comprises a magnetic induction detector (1), a signal conditioner (2), an MCU (microcontroller unit) (3), an upper computer, a magnetic source and a power supply module, wherein the magnetic induction detector (1) comprises a triaxial magnetic sensor array (4) and a calibration circuit (5); the triaxial magnetic sensor array (4) calibrated by the calibration circuit (5) receives magnetic field signals around the magnetic source; the signal conditioner (2) comprises an analog signal processor (5) and a digital signal processor (6); the analog signal processor (5) comprises a signal pre-processing circuit and a low pass filter circuit, magnifies and filters output signals of the magnetic induction detector (1), and uses a second order Butterworth low pass filter for filtering out external high frequency magnetic-field interference; the digital signal processor (6) comprises an A / D (analog to digital) conversion circuit; the MCU (3) comprises a square wave generator (7) and an RS232 serial communication circuit (8), square wave signals generated by the square wave generator (7) are transmitted to the calibration circuit and taken as calibrating signals, and the RS232 serial communication circuit (8) transmits digital signals output by the digital signal processor (6) to the upper computer; and the power supply module is used for supplying power.

Description

technical field [0001] The invention relates to a method of using magnetic detection technology to reversely solve the spatial coordinates of a magnetic source pasted on the legs of a human body, thereby obtaining gait characteristic parameters in the process of human body movement. The invention belongs to the technical field of gait analysis in biomedical engineering. Background technique [0002] Walking is the most repeated overall movement in the daily life of the human body. The development of modern measurement technology makes it possible for us to conduct dynamic quantitative analysis on the movement and force of various parts of the human body, especially the lower limbs. This work has gradually developed into a special branch of biomechanics and was named Gait analysis. [0003] Gait analysis can be used to analyze the gait cycle of ordinary normal people. It is more commonly used as an effective means of systematic evaluation of walking function in clinical pra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/11
Inventor 吴小玲王延花彭唯唯王旋敦煌俊秋
Owner NANJING MEDICAL UNIV
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