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Energy-saving quick wireless imaging method

A wireless imaging and fast technology, applied in the field of wireless network and test and measurement technology, can solve the problems of long scanning time, high energy consumption, slow imaging speed, etc., and achieve the effect of increasing wireless scanning speed and saving energy consumption

Inactive Publication Date: 2015-04-08
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method requires all nodes to continuously send and receive data, which consumes a lot of energy; at the same time, when the number of wireless scanning nodes is large, the scanning time will be too long and the imaging speed will be slow
This limits the application of wireless imaging technology in large-scale networks and when nodes are powered by batteries

Method used

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Embodiment Construction

[0021] The implementation of the present invention will be described in detail below in combination with the technical scheme and the accompanying drawings.

[0022] Example: in the attached figure 1 Among them, 8 wireless scanning nodes are adopted, that is, No. 1, No. 2...No. 8 wireless scanning nodes N1, N2...N8 are arranged around the monitored target 4 to realize wireless scanning of the network coverage area; wireless control The node 1 is connected with a general-purpose PC 2 through a USB interface, and the general-purpose PC 2 is installed with an intelligent processing software 3 for operation. There are 8 wireless scanning nodes N1, N2....N8 and a wireless control node 1. They all use Zigbee wireless nodes, powered by 2 AA batteries. Power consumption microprocessor, transmit power 10dBm, receive sensitivity -95dBm, antenna adopts +3dB gain omnidirectional antenna, working frequency 2.45GHz. The network coverage area is 10m×10m, and the distance between wireless s...

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Abstract

The invention discloses an energy-saving quick wireless imaging method, and relates to an energy-saving quick wireless imaging method based on the markov process theory, belonging to the technical field of test and measurement technology and wireless network. The wireless imaging method comprises the following steps: predicating a key concerned imaging area through a markov process, coordinating each wireless scanning node to perform wireless link scanning only on the key concerned imaging area; according to wireless link measuring information, reconstructing shielding characteristics of the key concerned imaging area by a wireless imaging system through a compressed sensing algorithm, wherein the wireless imaging system comprises N wireless scanning nodes, a wireless control node, a general PC (personal computer) and intelligent processing softwares operated on the general PC. The energy-saving quick wireless imaging method can be used for expanding the scope of application of the wireless imaging technology, so that the wireless imaging technology can be applied to a battery-powered portable monitoring application occasion and a wireless imaging monitoring for a large-scale area and has a wide application prospect in the fields such as border security and protection monitoring and animal monitoring.

Description

technical field [0001] The invention belongs to the field of test measurement technology and wireless network technology, and relates to an energy-saving and fast wireless imaging method based on Markov process theory. Background technique [0002] Wireless imaging technology is a new technology proposed in recent years, and its working principle is similar to industrial CT imaging technology. Wireless imaging technology needs to arrange a large number of wireless scanning nodes around the monitored area, and these nodes can communicate with each other wirelessly, thus forming multiple wireless communication links. When these wireless communication links pass through the monitored area, the wireless signal will be blocked by obstacles, which will cause the signal strength of the wireless link to change. When a target person or object is moving in the monitored area, the covered wireless links will change, thus causing the signal strength of these wireless links to change. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S1/02
CPCG01S5/02G01S5/0252
Inventor 王洁高庆华喻言张潇王洪玉李思伟张焕冲平健舟
Owner DALIAN UNIV OF TECH
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