A gesture recognition system and recognition method based on csi phase difference

A gesture recognition and phase difference technology, applied in the field of wireless network and human behavior recognition, to achieve the effect of strong perception ability, extended signal coverage and high accuracy

Active Publication Date: 2020-12-11
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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AI Technical Summary

Problems solved by technology

The technical solution of the present invention aims at the weakness of the existing gesture recognition system based on CSI amplitude, solves the problem of weak signal recognition on the non-central link, especially the weak signal of human gestures, and gets rid of the central link between the wireless signal transmitting end and the receiving end Road limitation, make full use of the multipath effect and the spatial diversity of the MIMO system, can identify weaker signals in a wider coverage area, and is more universal, making the application range of gesture recognition based on CSI wider

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  • A gesture recognition system and recognition method based on csi phase difference
  • A gesture recognition system and recognition method based on csi phase difference
  • A gesture recognition system and recognition method based on csi phase difference

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Embodiment Construction

[0057] The technical solutions of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0058] With the popularity of wireless networks, Wi-Fi devices have spread throughout our daily lives. The present invention utilizes the channel state information (Channel State Information, CSI) extracted from commercial Wi-Fi equipment, and can realize the detection and identification of human gestures on the central link and the non-central link of the wireless signal transmitter and receiver. The advantages of the invention are: no additional equipment is needed, only a home router can realize gesture recognition, the cost is low, and the coverage is wide, and it is not affected by environmental factors such as temperature, lighting conditions, etc., even in poor lighting conditions. In places, the system is still able to detect gestures very well. Compared with the current popular methods, it is more universal ...

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Abstract

The invention discloses a CSI phase difference-based gesture recognition system and recognition method, being characterized in that a wireless signal receiving terminal monitors a wireless channel, obtains data transmitted by a wireless signal transmitting terminal, and transmits the collected data to a server; the server performs analysis, preprocessing, phase calibration and real-time matching on the data acquired by the plurality of wireless signal receiving terminals, further gives a classification result, and sends the classification result to corresponding equipment through a network torealize control on the corresponding equipment; and meanwhile, the server can store an identification result in a local database of the server in a log form; and the identification result is used fordata analysis, data mining and query functions. The CSI phase difference-based gesture recognition system and recognition method can fully utilize the phase information and the multipath effect of theCSI and the spatial diversity of the MIMO system, can recognize the gesture action on the central link, can also recognize the weak gesture action far away from the central link, and can achieve dead-corner-free perception.

Description

technical field [0001] The invention relates to the field of wireless network and human behavior recognition, in particular to a gesture recognition system and recognition method based on CSI phase difference. Background technique [0002] With the development of human-computer interaction (HCI) technology, the perception and analysis of human behavior has become an important part of realizing higher-level human-computer interaction, especially the recognition and understanding of gestures and other body movements. In the field of human behavior recognition and human-computer interaction, the detection and recognition of human gestures plays a very important role in smart homes, virtual reality (VR) and immersive games. In the field of smart home, the detection of human gestures can realize the control of furniture in the air, save a lot of time and labor costs for users, and make home life more intelligent. At the same time, in virtual reality and immersive games, users ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/01H04B17/309
CPCG06F3/017H04B17/309
Inventor 王拥军马维华
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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