Invading object detecting and positioning system based on wireless local area network signals
A wireless local area network and object detection technology, which is applied in the direction of location information-based services, transmission systems, transmission monitoring, etc., can solve the problems of damage, lack of stability and concealment, detection methods are easy to be discovered, etc., and achieve good concealment Effect
Inactive Publication Date: 2020-05-08
CHONGQING UNIV
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Problems solved by technology
[0003] At present, the relevant technologies used for intrusion detection and positioning mainly use infrared and video sensors for detection. This type of detection method requires the installation of a large number of sensors and various wiring settings, and this type of detection method is easy to be discovered and destroyed, and is stable. Lack of sex and concealment
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[0072] Example: such as Figure 5 As shown, in order to carry out intrusion monitoring to area R, this embodiment arranges 6 WIFI signal transmitting and receiving devices around the area, and its corresponding position coordinates are (X 1 ,Y 1 ,Z 1 ), (X 2 ,Y 2 ,Z 2 ), (X 3 ,Y 3 ,Z 3 ), (X 4 ,Y 4 ,Z 4 ), (X 5 ,Y 5 ,Z 5 ) and (X 6 ,Y 6 ,Z 6 ) The WIFI signal analysis device adopts a polling method to query the WIFI signals of other WIFI signal transmitting devices received in each WIFI signal transceiver device in this embodiment according to a certain cycle, and analyze whether the intensity change is greater than the set threshold value, if greater than Setting the threshold indicates that there is an intrusion object on the connection between the corresponding two WIFI signal transmitting and receiving devices.
[0073] In this embodiment, two main situations are described respectively, and the specific methods are as follows:
[0074] 1) When there are t...
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The invention relates to an invading object detecting and positioning system based on wireless local area network signals, and belongs to the technical field of invading object detecting and positioning and security and protection. The system comprises a WIFI signal sending device, a WIFI signal receiving device and a WIFI signal analysis device; a plurality of WIFI signal transmitting devices andWIFI signal receiving devices are arranged in an area needing to be monitored and used for transmitting and receiving WIFI signals and transmitting the received WIFI signals to a WIFI signal analysisdevice; according to the system, a WIFI signal analysis device is used for analyzing a WIFI signal received by a WIFI signal receiving device; the position information of a transmitting end and a receiving end can be determined by using the WIFI signal of which the signal intensity change is greater than a threshold value, a straight line where the invaded object is located is determined, and theposition of the invaded object is determined by using a method of solving a multivariate function extreme value, thereby realizing detection and positioning of the invaded object. According to the system disclosed in the invention, the intensity change characteristics of the WIFI signals are analyzed to realize the detection and positioning of the invaded object,; compared with a traditional method, the method has the advantages of no influence on the communication function of the original WIFI system, good concealment and the like.
Description
technical field [0001] The invention belongs to the technical field of intrusion object detection and positioning and security protection, and relates to an intrusion object detection and positioning system based on wireless local area network signals. Background technique [0002] Intrusion detection is the detection and monitoring of intrusion behavior, and it is to discover and locate people or objects entering the area through monitoring means in a specific area. Intrusion object detection and localization are the main functions that security systems focus on. [0003] At present, the relevant technologies used for intrusion detection and positioning mainly use infrared and video sensors for detection. This type of detection method requires the installation of a large number of sensors and various wiring settings, and this type of detection method is easy to be discovered and destroyed, and is stable. Sex and concealment are lacking. Contents of the invention [0004...
Claims
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IPC IPC(8): H04W4/02H04B17/318
CPCH04W4/02H04B17/318
Inventor 郭茂耘汪梦倩梁皓星朱思宁陈行夏焌虓
Owner CHONGQING UNIV