Security protection system based on small wireless and power line broadband carrier dual-mode communication

Abstract

The invention relates to a safety protection system based on small wireless and power line broadband carrier dual-mode communication. The safety protection system comprises a small wireless communication module, a power line broadband carrier communication module, a controller module, a safety protection module and a sensor and execution mechanism module. According to the system, through combination of small wireless communication and power line carrier communication, a communication network with high reliability and wide coverage is realized. The controller module intelligently manages switching and cooperative work of two communication modes, and ensures communication stability in a complex environment. And meanwhile, the security protection module provides data encryption, identity authentication and abnormal behavior detection functions, so that the security of the system is enhanced. The system is widely applied to scenes such as smart home, office safety and industrial parks, the reliability and safety of communication can be remarkably improved, and resource utilization is optimized.

Description

Technical Field

[0001] The present invention relates to the technical field of safety protection systems, and in particular to a safety protection system based on dual-mode communication of small wireless and power line broadband carrier. Background Art

[0002] With the rapid development of Internet of Things (IoT) technology, intelligent systems have been widely used in homes, offices, industrial parks and other fields. These intelligent systems usually rely on various sensors and actuators for environmental monitoring and control, and data communication between these devices is the key to the normal operation of the system. There are two main traditional communication methods: wireless communication and power line carrier communication. Although these two communication methods have their own advantages, they often encounter some challenges in practical applications, affecting the reliability and security of the system.

[0003] Wireless communication technologies (such as Wi-Fi, Zigbee, LoRa, etc.) are widely adopted because of their convenient installation, strong scalability and wide adaptability. Wi-Fi has a high bandwidth and good user experience, and is suitable for application scenarios with large data transmission volume; Zigbee is a low-power, low-rate wireless communication protocol suitable for short-distance communication between low-power devices; LoRa is often used in scenarios that require wide coverage due to its long-distance and low-power characteristics. However, these wireless communication technologies also have their inherent limitations. For example, Wi-Fi signals are easily shielded and interfered by obstacles such as walls and furniture, resulting in unstable communication or insufficient signal coverage. Although Zigbee and LoRa can solve the problem of coverage to a certain extent, their communication rates are low and are not suitable for the rapid transmission of large amounts of data. In addition, wireless signals are also susceptible to electromagnetic interference, frequency congestion and other problems, all of which may lead to a decline in communication quality.

[0004] Power line carrier communication technology is a technology that transmits data through the existing power line network. This technology does not require additional wiring and uses the existing power line network for data transmission. It has a large coverage range and is particularly suitable for connecting equipment within buildings. Power line carrier communication can solve the problems of signal coverage and penetration without relying on wireless signals, especially when there are severe wall obstructions. However, there are also some problems with power line carrier communication. First, the complexity of the power line environment (such as grid noise, load changes, etc.) can easily lead to unstable communication; second, in some cases, the attenuation and interference of the power line may affect the quality of communication, especially in old buildings or complex power networks. This problem is particularly significant. In addition, the rate of power line communication is usually lower than that of wireless communication, which is not suitable for application scenarios with high bandwidth requirements.

[0005] In practical applications, a single communication method is difficult to meet the comprehensive requirements of intelligent systems for stability, coverage, and data transmission rate. For example, in a home or office, if you only rely on Wi-Fi, when the wireless signal coverage is insufficient or interfered, the communication between devices may be interrupted, affecting the normal operation of the system; and if you only rely on power line carrier communication, when the power line environment is unstable, the communication quality may also decline. Therefore, how to design a dual-mode communication system that can combine the advantages of wireless communication and power line carrier communication has become an important research direction in the current field of intelligent security protection.

[0006] The concept of dual-mode communication system came into being, aiming to utilize the complementarity of wireless communication and power line carrier communication to enhance the overall performance and reliability of the system. By integrating small wireless communication modules (such as Wi-Fi, Zigbee, LoRa) and power line broadband carrier communication modules, the dual-mode communication system can dynamically select the best communication mode according to the real-time environment, or enable both communication modes at the same time when necessary to achieve redundant communication and ensure the continuity and stability of data transmission. For example, when the wireless signal is good, the system can give priority to the wireless communication module for data transmission and enjoy the advantages of high speed and low latency; when the wireless signal is poor, the system can automatically switch to the power line carrier communication module to ensure the stability of communication. At the same time, in some special scenarios, the system can enable wireless and power line carrier dual-channel communication at the same time to improve the redundancy of communication and further enhance the reliability of the system.

[0007] In addition, with the increase in security threats, the requirements for communication security in intelligent security protection systems are becoming increasingly higher. While improving communication stability, dual-mode communication systems also need to strengthen the protection of communication data. By integrating security protection functions (such as data encryption, identity authentication, abnormal behavior detection, etc.) into the controller module, data can be effectively prevented from being intercepted or tampered with during transmission, ensuring the security of the system.

[0008] In general, the security protection system based on dual-mode communication of small wireless and power line broadband carrier can not only make up for the shortcomings of a single communication method, but also improve the system's coverage, communication stability and data transmission rate by combining the advantages of the two communication technologies. At the same time, by integrating security protection functions, the system can effectively resist external attacks and internal threats and ensure the security of intelligent applications. Therefore, the dual-mode communication system has broad application prospects in the fields of smart home, office security, and comprehensive protection of industrial parks. Summary of the invention

[0009] The object of the present invention is to provide a safety protection system based on dual-mode communication of small wireless and power line broadband carrier, the system comprising:

[0010] Small wireless communication module: used for short-range wireless communication between devices;

[0011] Power line broadband carrier communication module: used to transmit data through the power line network to achieve broadband communication;

[0012] Controller module: used to manage the communication switching and collaborative work between the small wireless communication module and the power line broadband carrier communication module;

[0013] Security protection module: used to provide data encryption, identity authentication and abnormal behavior detection functions;

[0014] Sensor and actuator module: includes safety sensors and actuators, which are connected with the controller module to form a complete safety protection system.

[0015] As a preferred technical solution of the present invention, the small wireless communication module adopts one or more communication technologies of Wi-Fi, Zigbee or LoRa.

[0016] As a preferred technical solution of the present invention, the power line broadband carrier communication module transmits signals through the existing power line network and can provide communication support in areas where wireless signals are weak or cannot be covered.

[0017] As a preferred technical solution of the present invention, the controller module automatically selects to use a small wireless communication module or a power line broadband carrier communication module, or uses both for communication at the same time according to the following formula:

[0018] S 选择 =max(S 无线 , S 电力线 )

[0019] Among them, S 无线 Represents the strength of a small wireless communication signal, S 电力线 Indicates the strength of the power line broadband carrier communication signal.

[0020] As a preferred technical solution of the present invention, the controller module includes a switching logic for automatically switching to the power line broadband carrier communication module according to the following conditions when the small wireless signal is weak or interfered

[0021] S 无线 <S 阈值

[0022] Among them, S 阈值 is the preset wireless signal strength threshold.

[0023] As a preferred technical solution of the present invention, the security protection module includes: a data encryption unit, which is used to encrypt all data transmitted in the system. The encryption algorithm is a symmetric encryption algorithm, and the formula is as follows:

[0024] C=E K (M)

[0025] Among them, M is the original message, K is the symmetric key, E is the encryption function, and C is the encrypted ciphertext identity authentication unit, which is used to authenticate all devices in the system. The identity authentication adopts the public key encryption algorithm. The formula is as follows:

[0026]

[0027] Among them, H(M) is the message digest, K 私 is the private key of the device, S is the digital signature; the abnormal behavior detection unit is used to monitor the communication behavior of the system in real time and detect abnormal behavior through the following formula:

[0028]

[0029] Among them, A 检测 Score for anomaly detection, w i is the feature weight, f i (x) is the value of the i-th feature.

[0030] As a preferred technical solution of the present invention, the sensor and actuator module includes but is not limited to door and window magnetic sensors, infrared sensors, smoke detectors, alarms, automatic door locks and cameras.

[0031] As a preferred technical solution of the present invention, the controller module of the system can configure and update the security policy through a user interface or a remote management platform.

[0032] As a preferred technical solution of the present invention, the system can provide dual-channel communication when the small wireless communication module and the power line broadband carrier communication module are enabled at the same time, and the redundancy of the communication is calculated according to the following formula:

[0033] R = P (wireless) + P (power line) - P (wireless) × P (power line)

[0034] Where R is the communication redundancy, P(wireless) and P(power line) are the availability probabilities of the wireless and power line communication channels, respectively.

[0035] As a preferred technical solution of the present invention, the controller module can dynamically adjust the ratio of small wireless communication to power line broadband carrier communication according to the following formula to optimize the overall performance of the system:

[0036]

[0037] Among them, W 无线和 W 电力线are the weight ratios of wireless communication and power line communication respectively.

[0038] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0039] The present invention combines small wireless communications and power line broadband carrier communications, making full use of the complementary advantages of the two, and significantly improving the communication reliability and coverage of the system. The wireless communication module provides fast and convenient communication services in areas with good signals, while the power line carrier communication module can provide stable communication support in environments with insufficient wireless signal coverage or large interference. Especially in complex building structures or long-distance transmission scenarios, the present invention can effectively avoid communication blind spots and signal attenuation problems, ensure stable connections between devices, and avoid system failures caused by failures in a single communication method.

[0040] The present invention integrates multiple security protection measures such as data encryption, identity authentication and abnormal behavior detection in the communication system, which greatly improves the security of the system. By encrypting the transmitted data, the system can prevent the data from being intercepted or tampered with during the transmission process, protecting user privacy and sensitive information. In addition, the identity authentication mechanism ensures that only authorized devices can access the system, effectively preventing the intrusion of illegal devices. The abnormal behavior detection function can monitor the communication status of the system in real time. When suspicious behavior or potential threats are detected, the system will automatically trigger security alarms and protective measures, thereby improving the overall security protection capabilities of the system.

[0041] The present invention realizes the optimal utilization of communication resources by intelligently selecting the communication mode. When the signal conditions are good, the system gives priority to small wireless communications, making full use of its advantages of high bandwidth and low latency; when the signal conditions are poor, the system automatically switches to power line carrier communication to ensure the stability of communication. Through such dynamic adjustment, the system can flexibly respond to different environmental requirements without increasing additional hardware costs, reducing dependence on a single communication method, thereby reducing the operation and maintenance costs of the overall system. In addition, the dual-mode communication structure of the present invention not only provides redundancy, but also reduces the risks and losses caused by communication failures, thereby improving the economic benefits of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 This is a schematic diagram of the structure of a safety protection system based on dual-mode communication of small wireless and power line broadband carrier proposed by the present invention. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] Embodiment 1: Home security protection system based on Wi-Fi and power line carrier communication

[0045] System composition:

[0046] Small wireless communication module: In this embodiment, Wi-Fi communication technology is selected. The Wi-Fi module connects various smart devices in the home, such as door and window sensors, cameras, smart door locks, etc., to achieve short-range wireless communication. Power line broadband carrier communication module: This module transmits data through the existing power line network in the home. When the home wireless network signal is weak or there is interference, the system automatically switches to power line carrier communication to ensure the continuity and reliability of communication. Controller module: This module is integrated in the home gateway and is responsible for managing the collaborative work of the small wireless communication module and the power line carrier communication module. The controller automatically selects the optimal communication mode according to the following formula:

[0047] S 选择 =max(S 无线 , S 电力线 )

[0048] When the wireless signal strength is lower than the preset threshold, it switches to power line carrier communication:

[0049] S 无线 <S 阈值

[0050] Security protection module: including data encryption, identity authentication and abnormal behavior detection functions. All data transmitted in the system is symmetrically encrypted using the following formula:

[0051] C=E K (M)

[0052] In addition, the system authenticates all devices to ensure that only authorized devices can access the system. Authentication is performed using a public key encryption algorithm:

[0053]

[0054] Sensor and actuator module: This embodiment includes door and window magnetic sensors, infrared sensors, smoke detectors, smart door lock cameras and alarms, etc.

[0055] System Operation:

[0056] When the wireless network signal in the home is normal, the system will give priority to using the Wi-Fi communication module for data transmission between devices. If there is wireless signal interference or weak signal area, the controller module will automatically switch to the power line carrier communication module to ensure the stability of data communication.

[0057] When abnormal behavior is detected (such as abnormal opening detected by the door or window sensor), the system sends the data to the controller module through an encrypted channel for analysis. If the abnormality is confirmed, the alarm is immediately triggered and the door is locked.

[0058] Users can view the home security status through the remote management platform and adjust security policies, such as setting communication mode priorities or updating security keys.

[0059] Example 2: Office security protection system based on Zigbee and power line carrier communication

[0060] System composition:

[0061] Small wireless communication module: In an office environment, the system uses Zigbee communication technology, which is suitable for communication between low-power, multi-node office devices. Power line broadband carrier communication module: This module transmits data through the office's power line network to ensure that the system can maintain stable communication through the power line network when the wireless signal coverage is insufficient or interfered. Controller module: Deployed in the office master server. The controller module dynamically selects the communication mode according to the actual communication environment of each area of ​​the office:

[0062]

[0063] The controller determines which communication module the data is transmitted through based on the above weight ratio. Security protection module: The data encryption unit deployed in the system uses a symmetric encryption algorithm, and all communication data is encrypted for transmission. At the same time, the abnormal behavior detection unit monitors the communication status in real time, identifies abnormal behavior, and uses the feature weight algorithm:

[0064]

[0065] Sensor and actuator module: The system is equipped with devices such as access control systems, surveillance cameras, smoke detectors and alarms.

[0066] System Operation:

[0067] During daily operation of the system, the Zigbee module is responsible for low-power communication between office devices. When it detects that the wireless signal is poor in certain areas, the system automatically switches to power line carrier communication.

[0068] When the access control system or smoke detector detects an anomaly, the data is sent to the controller module through an encrypted channel. The controller initiates an emergency plan based on the anomaly detection results, such as triggering an alarm, locking the access control system, and notifying security personnel.

[0069] Users can view the real-time security status of the office through the management platform and adjust communication modes or security policies as needed.

[0070] Example 3: Industrial Park Comprehensive Security Protection System Based on LoRa and Power Line Carrier Communication System Composition:

[0071] Small wireless communication module: In large industrial parks, the system uses LoRa communication technology, which has wide coverage and low power consumption, and is suitable for long-distance communication within the park.

[0072] Power line broadband carrier communication module: uses the park's high-voltage power line network to transmit data, ensuring that the system can still communicate normally over long distances or when the LoRa signal is blocked.

[0073] Controller module: The control center is deployed in the core control room of the park and is responsible for the overall management of the communication network in the park. The controller module dynamically adjusts the communication ratio of LoRa and power line carrier according to environmental conditions and communication requirements.

[0074] Security protection module: The security module integrates multi-level data encryption and distributed identity authentication to ensure the security of data transmission within the park. At the same time, the system uses big data algorithms to detect abnormal behavior.

[0075] Sensor and actuator module: The system includes environmental monitoring sensors (such as gas, noise, etc.), intrusion detection system and emergency response system.

[0076] System Operation:

[0077] Each monitoring device in the park maintains communication with the control center through the LoRa network. When the LoRa signal is interfered or the coverage is insufficient in some areas, the system switches to power line carrier communication to ensure the stability of long-distance data transmission.

[0078] When the intrusion detection system detects an abnormal intrusion, or the environmental monitoring sensor detects hazardous gases, the control center automatically triggers emergency response measures, sends alarm information through dual-channel communication (LoRa and power line carrier) and initiates safety measures.

[0079] Security managers can remotely monitor various security situations within the park through the integrated management platform, and optimize and adjust communication modes and security strategies.

[0080] Example 4: Intelligent building security protection system based on hybrid communication

[0081] System composition:

[0082] Small wireless communication module: The system adopts a hybrid communication mode of Wi-Fi and Zigbee in smart buildings to adapt to the complex equipment environment in the building.

[0083] Power line broadband carrier communication module: Utilizes the power line network inside the building to ensure the communication stability of the system when Wi-Fi and Zigbee signal coverage is insufficient or there is interference.

[0084] Controller module: The controller module is installed in the building's security control center and is responsible for dispatching and managing the communication equipment on each floor and selecting the best communication mode based on actual conditions.

[0085] Security protection module: The system adopts a multi-layer encryption mechanism to ensure the security of data transmission and performs hierarchical identity authentication on devices connected to the system.

[0086] Sensor and actuator modules: The system includes corridor cameras, elevator monitoring system, fire alarm system and smart access control system.

[0087] System Operation:

[0088] The system uses Wi-Fi and Zigbee by default for internal building equipment communication. When it detects that the signal on some floors is weak or affected by shielding, the controller module automatically switches to power line carrier communication.

[0089] The fire alarm system and smart access control system send data to the control center through encrypted communication. If a fire alarm or unauthorized access is confirmed, the system immediately locks the relevant floor and activates the alarm system.

[0090] Building managers can use the management system to monitor the security status of each floor in real time and adjust the priority or security strategy of the communication mode.

[0091] The above embodiments are specific implementations of the present invention, and those skilled in the relevant technical field can make different changes and modifications based on the content of the present invention without departing from the spirit and scope of the present invention. Therefore, all equivalent implementations that do not depart from the spirit and scope of the present invention should be included in the protection scope of the present invention.

[0092] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in the field. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A safety protection system based on dual-mode communication of small wireless and power line broadband carrier, characterized in that: The system comprises: Small wireless communication module: used for short-range wireless communication between devices; Power line broadband carrier communication module: used to transmit data through the power line network to achieve broadband communication; Controller module: used to manage the communication switching and collaborative work between the small wireless communication module and the power line broadband carrier communication module; Security protection module: used to provide data encryption, identity authentication and abnormal behavior detection functions; Sensor and actuator module: includes safety sensors and actuators, which are connected with the controller module to form a complete safety protection system.

2. A safety protection system based on dual-mode communication of small wireless and power line broadband carrier as claimed in claim 1, characterized in that: The small wireless communication module adopts one or more communication technologies among Wi-Fi, Zigbee or LoRa.

3. A safety protection system based on small wireless and power line broadband carrier dual-mode communication as claimed in claim 1, characterized in that: The power line broadband carrier communication module transmits signals through the existing power line network and can provide communication support in areas where wireless signals are weak or cannot be covered.

4. A safety protection system based on small wireless and power line broadband carrier dual-mode communication as claimed in claim 1, characterized in that: The controller module automatically selects to use a small wireless communication module or a power line broadband carrier communication module, or uses both for communication at the same time according to the following formula: S 选择 =max(S 无线 ,S 电力线 ) Among them, S 无线 Represents the strength of a small wireless communication signal, S 电力线 Indicates the strength of the power line broadband carrier communication signal.

5. A safety protection system based on dual-mode communication of small wireless and power line broadband carrier as claimed in claim 1, characterized in that: The controller module includes switching logic for automatically switching to the power line broadband carrier communication module when the small wireless signal is weak or interfered with according to the following conditions: S 无线 <S 阈值 Among them, S 阈值 is the preset wireless signal strength threshold.

6. A safety protection system based on dual-mode communication of small wireless and power line broadband carrier as claimed in claim 1, characterized in that: The security protection module includes: a data encryption unit, which is used to encrypt all data transmitted in the system. The encryption algorithm is a symmetric encryption algorithm, and the formula is as follows: C=E K (M) Among them, M is the original message, K is the symmetric key, E is the encryption function, and C is the encrypted ciphertext identity authentication unit, which is used to authenticate all devices in the system. The identity authentication adopts the public key encryption algorithm. The formula is as follows: Among them, H(M) is the message digest, K 私 is the private key of the device, S is the digital signature; the abnormal behavior detection unit is used to monitor the communication behavior of the system in real time and detect abnormal behavior through the following formula: Among them, A 检测 Score for anomaly detection, w i is the feature weight, f i (x) is the value of the i-th feature.

7. A safety protection system based on dual-mode communication of small wireless and power line broadband carrier as claimed in claim 1, characterized in that: The sensor and actuator modules include but are not limited to door and window magnetic sensors, infrared sensors, smoke detectors, alarms, automatic door locks and cameras.

8. A safety protection system based on dual-mode communication of small wireless and power line broadband carrier as claimed in claim 1, characterized in that: The controller module of the system can configure and update the security policy through a user interface or a remote management platform.

9. A safety protection system based on dual-mode communication of small wireless and power line broadband carrier as claimed in claim 1, characterized in that: The system can provide dual-channel communication when the small wireless communication module and the power line broadband carrier communication module are enabled at the same time, and the redundancy of the communication is calculated according to the following formula: R = P (wireless) + P (power line) - P (wireless) × P (power line) Where R is the communication redundancy, P(wireless) and P(power line) are the availability probabilities of the wireless and power line communication channels, respectively.

10. A safety protection system based on dual-mode communication of small wireless and power line broadband carrier according to claim 1, characterized in that: The controller module can dynamically adjust the ratio of small wireless communication to power line broadband carrier communication according to the following formula to optimize the overall performance of the system: Among them, W 无线和 W 电力线 are the weight ratios of wireless communication and power line communication respectively.

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