RFID-based multi-target passive-type indoor activity identification method

An activity recognition and passive technology, applied in the direction of cooperative devices, instruments, computer parts, etc., can solve the problems of not cheap equipment, poor accuracy, and unsatisfactory accuracy

Active Publication Date: 2016-06-29
NORTHWEST UNIV
View PDF3 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods all have major or minor defects: the camera-based method is most obviously affected by light, and the camera poses a serious threat to people's privacy protection; as far as radar is concerned, the 60GHz radar low-cost solution has only a limited operating range. Limited tens of centimeters; one of the biggest flaws of the method based on wearable sensors is "must wear", which will inevitably bring a lot of unnecessary troubles to the served
There a...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • RFID-based multi-target passive-type indoor activity identification method
  • RFID-based multi-target passive-type indoor activity identification method
  • RFID-based multi-target passive-type indoor activity identification method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0153] Two general-purpose RFID systems are used to complete the test in the communications laboratory of the School of Information Science and Technology of Northwestern University. There are multiple tables and chairs, desktop computers, and communications equipment in the laboratory. The indoor environment is more complicated. In this experiment, there are a total of three different experiments to verify the effectiveness, robustness, and advantages of the present invention compared with other methods. Each experiment has a different experimental scenario, completed by 7 volunteers, and lasted. In 14 hours, 1054400 pieces of data were collected.

[0154] This embodiment adopts the first scenario of Experiment 1. In scenario 1, a 5*5 label matrix is ​​formed by 25 RFID tags, and the interval between each pair of labels is 1.2m, thereby forming a monitoring area of ​​480cm*480cm. Two RFID readers and their corresponding antenna arrays are placed on adjacent sides of the monitori...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses an RFID-based multi-target passive-type indoor activity identification method, which takes perturbation of RFID tag phases caused by human activities as fingerprint information and obtains activity situations of multiple targets by using perturbation of different tag phases caused by activities of many persons. However, current indoor activity identification methods are mainly for a single target, and cannot be applied or lead to big activity identification errors in multi-target indoor scenes. The method of the invention realizes multi-target activity identification without the requirement that targets carry devices, solves the defects of indoor activity identification in terms of target quantity, achieves good dynamic adaptability to the environment, and is low in economic cost.

Description

Technical field [0001] The invention belongs to the field of wireless activity recognition, and relates to a multi-target activity recognition method, in particular to an RFID-based multi-target passive indoor activity recognition method. Background technique [0002] In many application scenarios, especially indoor scenarios, activity recognition technology has become particularly important. Activity recognition technology can provide the most basic facilities for medical care, optimized management, smart home, and health tracking. The traditional method of activity recognition is generally through a camera, a radar, or a hardware device such as a sensor for the subject. These methods all have large or small defects: the camera-based method is most affected by the light, and the camera poses a serious threat to human privacy protection; as far as radar is concerned, the operating range of the low-cost 60GHz radar solution is only A limited number of tens of centimeters; one of...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G06K17/00
CPCG06K17/0029
Inventor 房鼎益张立超谢彬彬倪礼刚陈晓江王薇王安文彭瑶邢天璋
Owner NORTHWEST UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap