Security system that detects motion and provides notifications using Wi-Fi signal analysis.

Abstract

The invention relates to a security system that utilizes Wi-Fi signals from existing wireless network infrastructure to detect unauthorized entry, movement, and environmental conditions in enclosed spaces, offering wide coverage and reducing the need for additional sensors or control equipment.

Description

Security system that detects motion and provides notifications using Wi-Fi signal analysis. Technical Area The invention enables the detection of unauthorized entry, movement, and environmental conditions in enclosed spaces. to provide this, it operates by using the Wi-Fi signals of the existing wireless network infrastructure, has a wide coverage area and does not require additional sensors or control equipment. It is related to the security system that reduces [the impact of the security measures]. State of the Art Today, security systems, smart home technologies, and wireless networking technologies Within this scope, the detection of unauthorized entries into enclosed spaces and movement within the environment. There are various systems for this purpose. Passive systems are commonly used for this purpose. Infrared (PIR) sensors, security cameras, and wireless network-based motion detection. systems are used. Security cameras enable the detection of movement within a space through video footage. While it provides opportunities, it is particularly useful for residential areas due to the collection of images and visual data. and similar private areas have various drawbacks in terms of privacy and confidentiality. It can create this. In addition, the performance of the cameras depends on the lighting conditions of the environment. It can vary depending on the situation. PIR sensors detect changes in infrared radiation generated by moving objects. It detects movement by sensing the sensor. However, these sensors... Blind spots in the coverage area due to detection characteristics and placement patterns Physical obstacles such as walls and furniture can affect perception performance. This can limit the detection capabilities of PIR sensors. Additionally, changes in ambient temperature can affect their sensitivity. It can affect performance. In addition, current technology can also handle changes in wireless network signals. various Wi-Fi based systems are used to detect movement within the environment. There are also systems that use wireless networks for sensing purposes in current solutions. inclusion of additional hardware and / or specialized sensing units in the infrastructure This may require system installation and integration with the existing network infrastructure. This can make integration more difficult. 2 Some existing security and motion detection solutions also include multiple Because sensors, wiring, control units, or auxiliary equipment may be required, The system's installation and maintenance processes are becoming more complex, and consequently, the installation... Costs may increase. Therefore, visual surveillance systems capable of detecting unauthorized entry and movement in enclosed spaces are necessary. capable of operating without collecting data, and compatible with existing wireless network infrastructure. usable, has a more practical structure in terms of coverage and installation, and is suitable for different environments. A detection system suitable for use in monitoring applications is needed. It is located. Application number WO2019143861A1 concerns wireless signals in a room being interrupted by mobile devices. measurement and transfer of the obtained signal characteristics to a classifier This relates to determining whether the device is in the room. However, the application states that... Direct detection of human movement, suspicious activity, and anomalies from Wi-Fi signal changes. It cannot be accomplished. In conclusion, due to the negative aspects described above and the current solutions being the subject of discussion... Due to its shortcomings, an improvement is needed in the relevant technical field. It has been made. Purpose of the Invention The invention was created by drawing inspiration from existing situations and overcoming the aforementioned drawbacks. It aims to solve the problem. The main purpose of the invention is to detect unauthorized entry, movement, and environmental conditions in enclosed spaces. to enable this, by using Wi-Fi signals of the existing wireless network infrastructure working, having a wide coverage area and requiring additional sensors or control equipment. The goal is to provide a smart security system that reduces the need for it. The invention aims to replace visual data used in camera systems with radio frequency (RF) data. By analyzing wireless signal data based on data from the environment, the people in the environment can be identified. The goal is to enable motion and presence detection without collecting images. Another aim of the invention is to take advantage of the characteristics of Wi-Fi signal propagation within the environment. by taking advantage of it, compared to traditional point or line-of-sight sensors. 3 to create a wide field of perception and to overcome physical obstacles such as walls, furniture and the like The aim is to enable the detection of the movements occurring behind it as well. Another aim of the invention is to integrate with existing Wi-Fi modem or wireless network hardware. or by configuring it to work on this hardware, with additional sensors, controls A safety system that reduces the need for panels and cabling, and is easy to install and implement. Our goal is to provide environmental monitoring solutions. Another purpose of the invention is to obtain amplitude, phase and / or channel status information in the wireless network signal. By analyzing their changes, not only significant movements but also slow and small ones can be identified. The aim is to enable the perception of scaled movements as well. In this context, the system allows the person to perceive the individual's movements. signal changes resulting from low-level movements such as breathing The aim is for it to be able to perceive. Another purpose of the invention is to detect unauthorized access using Wi-Fi signal analysis. In addition to detection, falls in environments where elderly and sick people are present, prolonged falls detecting immobility and similar unusual situations within the environment. The aim is to determine the occupancy rate. Detailed Description of the Invention This detailed explanation describes the invention, which involves Wi-Fi signal analysis and motion detection. The security system that provides notifications is the preferred configuration, simply to better understand the issue. It is explained in a way that facilitates understanding. The invention uses Wi-Fi signal analysis in indoor environments to detect motion and provide notifications. It is a security system, and the security system modem that broadcasts and receives Wi-Fi signals, in short. The subject is devices that emit Wi-Fi signals into the environment and detect signals reflected back from the environment. The transceiver unit detects the amplitude, phase, and channel status of Wi-Fi signals reflected back from the environment. Signal change analyzer that measures and analyzes changes in information in real time. The unit processes data obtained from the signal change analysis unit to determine if there is movement in the environment. The motion detection decision unit, which detects that it is not present, from the motion detection decision unit By collecting data, it learns the normal movement profile within the environment and identifies movements that do not conform to that profile. The data recording and anomaly detection module identifies suspicious situations, and the detected suspicious It includes a notification and communication module that sends notifications to the user regarding the situations. Within the scope of the invention, the security system modem is the main unit that transmits and receives Wi-Fi signals. It forms the physical platform. The transceiver unit transmits the Wi-Fi signals to the environment. 4 an IEEE 802.11 compliant antenna that transmits and detects signals reflected back from the environment, and It consists of an electronic unit. The signal change analysis unit analyzes the signal reflected back from the environment. Real-time data captures changes in amplitude, phase, and Channel Status Information (CSI) in Wi-Fi signals. It measures and analyzes over time. The motion detection decision unit processes data obtained from the signal change analysis unit. By processing data, it determines whether or not there is movement in the environment. Data recording and The anomaly detection module learns the normal motion profile within the environment and... The notification and communication module identifies suspicious situations that do not match the subject profile. Regarding the suspicious situations detected, the user will be notified via mobile application, email and / or SMS. It sends notifications via this method. The user interface allows the user to set up the system. software that allows it to adjust the detection sensitivity and receive generated notifications. It creates the interface. The system described in the invention operates via a security system modem, and the security system... The modem manages the data flow within the system and the processes carried out within the system. It provides centralized control of the analysis processes. With the security system modem. The connected Wi-Fi transceiver unit sends Wi-Fi signals into the environment and words that are altered and reflected back as a result of human movements within the environment. The issue is collecting the signals again. Signal data collected by the Wi-Fi transceiver is sent to the signal change analyzer. The amplitude, phase, and channel of the Wi-Fi signals are transmitted here. State Information Index (CSI) changes are analyzed in real time. Signal changes Data analyzed by the analysis unit is transmitted to the motion detection decision unit. And this mechanism uses defined threshold values ​​and analysis algorithms. It detects whether there is movement within the environment. The acquired motion data and environmental behavior information are used in the data logging and anomaly detection module. It is processed by; data recording and anomaly detection module normal movement of the environment. By learning about their profile, unusual situations that do not fit that profile are considered anomalies. It is evaluating the situation. If a suspicious situation is detected, notification and communication will be provided. the module is activated and provides the user with a mobile application, web interface, SMS or other It sends notifications through various communication methods. The user interface allows the user to... monitoring the system, changing sensitivity levels, past records It enables monitoring and alarm management. Thus, security system modem, Wi-Fi transceiver, signal change analyzer, motion detection decision-making mechanism, data recording and anomaly detection module, notification and communication module The user interface works in a coordinated manner, responding to cameras or external motion sensors. Smart security and motion detection based on Wi-Fi signal analysis without the need for manual intervention. It forms the system. The working principle of the system described in the invention.  The security system modem forms the main physical platform of the system and is Wi-Fi- It enables the operation of the Fi-based motion detection infrastructure.  The Wi-Fi transceiver unit sends Wi-Fi signals into and out of the environment. reflected signals, amplitude, phase, and Channel Status Information (CSI) aggregates in terms of changes.  Signal change analysis unit, phase, amplitude and CSI in reflected Wi-Fi signals. It analyzes changes in real time.  The motion detection decision unit processes the analyzed signal data within a defined threshold. By evaluating the environment in accordance with values ​​and analysis algorithms, it can act accordingly. It produces a decision regarding whether or not it exists.  The data recording and anomaly detection module records the normal motion profile within the environment. It learns and identifies unusual situations that do not fit this profile.  Notification and communication module, for detecting suspicious or unusual situations In this case, the user will be notified via the mobile application, SMS or web interface. is sending.  The user interface allows the user to monitor the system and adjust detection sensitivity settings. It allows them to make changes and view past records.  Control mechanism; security system modem, Wi-Fi transceiver, signal Change analysis unit, motion detection decision mechanism, data logging and anomaly The detection module, notification and communication module, and user interface are coordinated and synchronized. Wireless motion detection and security by enabling timely operation. It ensures the implementation of its management.

Claims

1. Provides motion detection and notifications in indoor spaces using Wi-Fi signal analysis. It is a security system; its feature is:  The security system modem that transmits and receives Wi-Fi signals,  the Wi-Fi signals that are emitted into the environment and reflected back from the environment a transceiver unit that detects signals,  Amplitude, phase, and channel status information in Wi-Fi signals reflected back from the environment Signal change analyzers measure and analyze changes in real time. unit,  By processing the data obtained from the signal change analysis unit, it determines the movement in the environment. motion detection decision unit that determines whether or not it is present,  Using data received from the motion detection decision unit, it determines the normal state of the environment. data that learns the movement profile and identifies suspicious situations that do not match the profile. Recording and anomaly detection module,  A notification system that sends a report to the user regarding suspicious situations that have been identified. It includes a communication module.

2. It is a security system according to claim 1, and its feature is that it allows the user to set up the system and detects... the user can adjust the sensitivity and receive the generated notifications. It includes the interface.