A two-layer heterogeneous video-aware sensor node

Abstract

The invention relates to a double-layer isomerous video perception sensor node which at least comprises a video capture unit, a wireless communication unit, a control unit and a body moving sensing unit, wherein the control unit is specifically an ARM11 processor control unit; the body moving sensing unit is composed of a microwave sensing module and a body pyroelectric infrared detection module and can detect the moving body target accurately; the ARM11 processor control unit adopts an S3C6410 chip transplanting an OpenCV image library and is used for node control and video image intelligent analysis; the wireless communication unit is composed of a ZigBee CC2530 module and a WIFI232-G module and used for transmitting target feature data and background image data. The double-layer isomerous video perception sensor node adopts double-layer isomerous trigger type image capture and has the advantages of low power consumption and fast reaction, and collaborative perception among multiple nodes and continuous tracking of the target can be achieved.

Description

technical field [0001] The invention relates to a video perception sensor node and belongs to the technical field of intelligent monitoring. Background technique [0002] Public safety is an important guarantee for urban sustainable development, and maintaining urban public safety has always been the most severe challenge faced by construction and management departments. A video surveillance network is composed of sensor nodes and PC terminals, which realize the functions of video acquisition and display respectively. [0003] The sensor nodes in the prior art usually have a single function, and only complete the video acquisition function, while the actual control function is completed by the PC, which does not give full play to the real-time and initiative of monitoring, and consumes a lot of manual labor; the sensor in the prior art Nodes often only detect moving objects, but do not detect special targets such as human bodies, and cannot accurately track special targets;...

AI Technical Summary

Problems solved by technology

In order to achieve the purpose of dormancy, the traditional method generally uses software protocols to achieve synchronization between nodes, which requires high clock accuracy and complex synchronization algorithms, which in turn makes the controller circuit complex and has limited stability; existing technologies also use whole-network deployment Two types of nodes are used for control and video acquisition respectively, and the two work alternately to achieve the purpose of energy saving, but the interfaces of the two nodes are not unified, which is not conducive to the deployment of the whole network

Images