Wireless edge perception point cloud extraction and identification method and system for man-machine object

Abstract

An embodiment of the invention relates to the technical field of radio frequency perception, in particular to a wireless edge perception point cloud extraction and recognition method and system for aman-machine object. The method comprises the following steps: establishing a measurement matrix based on the surface of the reconfigurable intelligent metamaterial; training the point cloud identification module; measuring a person and / or an object in the to-be-measured target space to obtain a measurement vector, and identifying the point cloud extracted from the measurement vector through the trained point cloud identification module to realize identification of the to-be-measured person and / or object. According to the application, the radio frequency signals are used for sensing, training data acquisition can be carried out without the help of video acquisition equipment such as a wearable sensor and a camera, and the privacy protection is relatively high; by changing the radio frequency environment in the space, the information of the target space obtained by spreading the radio frequency signal in various environments is richer than the information obtained under the condition that the environment is invariable, and therefore the accuracy of point cloud extraction and identification is improved.

Description

technical field [0001] The embodiments of the present application relate to the technical field of radio frequency sensing, and in particular, relate to a method and system for extracting and identifying point clouds of wireless edge sensing for humans, machines and objects. Background technique [0002] Radio frequency sensing is to realize the state of the target, such as the perception of position and material, by identifying the impact of the sensing target on wireless signal transmission. [0003] Traditional radio frequency sensing is based on WIFI or mmWave transceiver equipment, and its effect is limited by the radio frequency signal propagation environment. For example, when the environment remains stable, the path of the RF signal passing through the target is basically fixed, and the receiving end perceives the same result for a long period of time, and the information of the target that can be obtained is limited. There are also some sensing methods based on sen...

AI Technical Summary

Problems solved by technology

There are also some methods of sensing with the help of sensors in wearable devices and methods of sensing based on camera-based video monitoring. However, these methods will have direct contact with the sensing target, which may cause some privacy issues.

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