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Object detection and classification method based on ultrasonic acoustics

A technology for object detection and classification, which is used in material analysis using sonic/ultrasonic/infrasonic waves, re-radiation of sonic waves, radio wave measurement systems, etc. It can solve problems such as unreliable object detection and signal weakening.

Inactive Publication Date: 2019-06-11
DONGGUAN UNIV OF TECH
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  • Claims
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AI Technical Summary

Problems solved by technology

The use of 60GHz WiGi signals also requires a dedicated directional transceiver because the signal is easily weakened by objects moving away from the detection device
Furthermore, these signals are easily masked by some humans moving around the room, thus making the application of object detection more unreliable

Method used

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  • Object detection and classification method based on ultrasonic acoustics
  • Object detection and classification method based on ultrasonic acoustics
  • Object detection and classification method based on ultrasonic acoustics

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Embodiment Construction

[0047] The present invention will be further elaborated below in conjunction with the accompanying drawings and specific embodiments.

[0048] The present invention divides the work related to ultrasound-based object detection into four different research categories, including material differentiation, object detection, context-sensitive computation and ultrasound-based work.

[0049] Material category distinction: For the distinction of material types, most of them use destructive methods. These methods include taking a physical sample of the object and analyzing it chemically, and analyzing it using a variety of spectroscopic and chromatographic methods. These methods rely more on a single material or on sufficient sampling of all aspects of a composite material to identify the overall object type. A further classification of these destructive methods includes localized destruction (eg etching). An example of this approach is the implementation of the acoustic barcode prop...

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Abstract

The invention discloses an object detection and classification method based on ultrasonic acoustics. Mobile equipment is allowed to transmit vibration through sound when in contact with the surface ofan object, so that sound signals are captured from a microphone generated and reflected by a vibration platform; and by training a classification model of specific object data, the system can identify the surface of a material, and can finally identify the object itself at a specific location. The scheme of the invention is built on the IPhone and tested on ten objects, and the detection accuracycan reach more than 90%.

Description

technical field [0001] The invention relates to the application of detection and classification of objects in the fields of computer science and security, in particular to an object detection and classification method based on ultrasonic acoustics. Background technique [0002] Classification of objects and materials is important for enabling new ways of interacting with digital devices in everyday close quarters. Imagine a mobile device (such as a smartphone) communicating with some smart lighting in a room and being able to turn these lights on or off depending on its position on the table or in bed. Similarly, manipulating a smart device in an area can be done by placing the smartphone in several different locations and mapping the desired environmental factors to the phone. These examples of geofencing-related applications utilizing object and material classification can allow computing devices in our possession to learn more about its surroundings, especially environme...

Claims

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Application Information

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IPC IPC(8): G01S15/88G01N29/00G01N29/44
Inventor 刘向阳
Owner DONGGUAN UNIV OF TECH
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