Finger posture sensing device and method based on wireless coupling resonance

Abstract

The invention discloses a finger posture sensing device and method based on wireless coupling resonance. The device comprises a wireless coupling coil assembly worn on a finger, a signal excitation and signal receiving coil mounted on a hand back, and a high-frequency signal generation and reflection signal measurement module fixed on an arm, the signal excitation and signal receiving coil is connected to the high-frequency signal generation and reflection signal measurement module, the high-frequency signal generation part outputs a high-frequency alternating current signal, and the signal excitation and signal receiving coil is wirelessly coupled with the wireless coupling coils on the finger; the high-frequency reflection signal measurement part measures the frequency and amplitude of the reflected signal received by the signal excitation and signal receiving coil, and obtains the instantaneous posture of the finger at the coil mounting part from the characteristics of the reflected signal. The device and the method have small influence on the activity of the finger, do not need to install an additional active sensor on the finger or carry out complex wiring, and has the characteristics of simple system deployment, low cost and high flexibility.

Description

technical field [0001] The invention belongs to the technical field of radio frequency sensing, and in particular relates to a finger posture sensing device and method based on wireless coupling resonance. Background technique [0002] Hand motion tracking and gesture recognition are indispensable for evaluating human hand function, and they are widely used in fields such as medicine, sign language communication, and mechanical operation. One type of gesture tracking method uses visible light, infrared light, electromagnetic waves, etc. to irradiate human hands in a non-contact manner and take pictures, and extract human gestures through image processing algorithms. Since no additional sensors are added to the hand or fingers, the non-contact method places little limitation on flexion and extension of the fingers. However, the range of hand movement is often limited to the illumination range of light sources, radars, etc., and the overlap between obstacles and tracked targe...

AI Technical Summary

Problems solved by technology

However, the existing contact gesture tracking technology often needs to wear gloves, embed the sensor circuit board in the glove and fix it with the finger, and connect it to the controller and power supply through a cable, and each finger needs to receive signals separately

This makes the contact gesture tracking system bulky and complicated, which limits the normal movement and dexterity of the fingers

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