An intelligent security and protection system based on high-sensitivity pressure sensor

Abstract

This invention discloses an intelligent security system based on a high-sensitivity pressure sensor, comprising a sensing module, a signal processing module, a data transmission module, a control module, an alarm module, and a power supply module. These modules are electrically connected sequentially, and the power supply module provides operating voltage to the other modules. The system employs high-sensitivity and multi-fusion technologies to achieve rapid and efficient security system construction. It utilizes a high-sensitivity pressure sensor as the sensing device to quickly detect suspicious behavior and issue real-time alarms; it uses artificial intelligence video analysis technology to judge suspicious objects; and its signal processing employs domestically produced chips, a remote terminal with a database, and a system fusion platform to ensure information security, high-performance processing of alarm information, and to provide alarm signals to other security and fire protection systems for system linkage.

Description

Technical Field

[0001] This invention relates to the field of public safety technology, and in particular to an intelligent security system based on a high-sensitivity pressure sensor. Background Technology

[0002] Intelligent security systems, leveraging the integrated application of artificial intelligence and the Internet of Things (IoT) technologies, are gradually replacing traditional manual monitoring and simple alarm devices. They are widely used in various scenarios such as urban governance, park security, and home security, effectively improving the automation and precision of security management and significantly reducing reliance on manual labor and operating costs. However, existing intelligent security systems still have many technical shortcomings in practical deployment and application. Their overall reliability, adaptability, and security need improvement, making it difficult to meet the high standards required for modern security.

[0003] First, the imbalance between sensitivity and recognition accuracy is prominent. The sensor sensitivity of the existing system is not high: if the sensitivity is increased to avoid missed alarms, alarms are easily triggered frequently by non-abnormal situations such as small animal activities and slight fluctuations in light, and the false alarm rate generally exceeds 30%; if the sensitivity is decreased to reduce false alarms, it is difficult to capture slight abnormal behavior or hidden intrusion events, and the shortcoming in recognizing rare anomalies in small samples is more obvious, which easily leads to the risk of missed alarms.

[0004] Secondly, it has poor environmental adaptability. Drastic fluctuations in temperature and humidity, as well as strong electromagnetic interference, can directly affect sensor performance, leading to unstable operation of the equipment. In extreme weather conditions such as low light, backlight, rain, and snow, or in crowded scenarios, the recognition accuracy is greatly reduced, and the core security functions are severely restricted, making it impossible to achieve stable protection in complex environments.

[0005] In summary, the current methods for preventing theft of valuable materials commonly include physical protection and video surveillance systems. However, these methods all have certain drawbacks, such as low sensitivity, susceptibility to environmental factors, and information security issues. Summary of the Invention

[0006] The purpose of this invention is to address the technical shortcomings of existing security systems, such as low accuracy of sensing devices, weak anti-interference capabilities, susceptibility to false alarms, and risks of privacy leaks, by providing an intelligent security system based on a high-sensitivity pressure sensor. This system leverages the high-precision pressure sensing advantage of the high-sensitivity pressure sensor to achieve accurate identification and monitoring of intrusion behavior, thereby improving the reliability and security of the security system. The technical solution adopted to achieve the purpose of this invention is: A smart security system based on a high-sensitivity pressure sensor includes: Sensing module: Used to sense pressure changes within the monitoring area and convert them into analog electrical signals; it includes multiple high-sensitivity pressure sensors. Signal processing module: includes signal conditioning unit, filtering unit and analog-to-digital conversion unit; the signal conditioning unit is used to condition the analog electrical signal output by the sensing module, the filtering unit is used to filter out high-frequency noise in the conditioned analog electrical signal, and the analog-to-digital conversion unit is used to convert the conditioned and filtered analog electrical signal into a digital electrical signal; Data transmission module: Used to transmit the digital electrical signals output by the signal processing module to the control module; Control module: Used to receive digital electrical signals transmitted by the data transmission module, extract pressure data and pressure change trends from the digital electrical signals, compare them with the pre-stored pressure threshold range and pressure change feature library, and determine whether there is any intrusion behavior.

[0007] Alarm module: Electrically connected to the control module, including an audible and visual alarm unit and a remote alarm unit; when the control module determines that there is an intrusion, it controls the audible and visual alarm unit to start and emit an audible and visual warning signal, and at the same time controls the remote alarm unit to send alarm information to preset terminal devices; Power module: Includes a voltage regulator unit and a backup power supply. The voltage regulator unit is used to convert the external input voltage into a stable operating voltage required by each module, and the backup power supply is used to continuously supply power to the system when the external power supply is interrupted.

[0008] In the above technical solution, the high-sensitivity pressure sensor adopts a strain gauge or piezoresistive pressure sensitive element, and its detection accuracy is not less than ±0.5 mmHg; the high-sensitivity pressure sensor is embedded or attached to the surface of the protective structure of the monitoring area, and the protective structure includes at least one of walls, doors, windows, and fences; the signal output terminal of each high-sensitivity pressure sensor is connected to the signal input terminal of the signal processing module; the control module achieves accurate positioning of the intrusion location by fusing and analyzing the pressure data of the high-sensitivity pressure sensor.

[0009] In the above technical solution, the filtering unit uses a second-order active low-pass filter for filtering.

[0010] In the above technical solution, the conditioning includes amplification and level conversion processing.

[0011] In the above technical solution, the data transmission module adopts a wired transmission method or a wireless transmission method. The wired transmission method is RS485 bus or Ethernet, and the wireless transmission method is WiFi, Bluetooth or LoRa communication protocol.

[0012] In the above technical solution, the control module includes a microprocessor and a storage unit, both of which use domestic Loongson chips based on the LoongArch architecture and the domestic Kingbase database, greatly improving data and system security. The storage unit pre-stores pressure threshold ranges, pressure change feature libraries, historical pressure data, and intrusion alarm records for easy subsequent querying and data analysis. The microprocessor receives digital electrical signals, extracts pressure data and pressure change trends, and compares them with the pre-stored pressure threshold ranges and pressure change feature libraries to determine whether intrusion behavior exists. The pressure change feature library contains pressure change curves corresponding to different intrusion behaviors, including impact, prying, and climbing.

[0013] In the above technical solution, the remote alarm unit sends alarm information to a preset terminal device through a mobile communication network.

[0014] In the above technical solution, the alarm information includes the time of intrusion, the location of the monitoring area, and pressure change data.

[0015] In the above technical solution, the backup power source is a lithium battery pack.

[0016] In the above technical solution, the intelligent security system also includes a remote monitoring platform. The remote monitoring platform is connected to the control module through a data transmission module and is used to receive monitoring data transmitted by the control module in real time. It can remotely view the monitoring status, modify the pressure threshold, and update the pressure change feature database. The remote monitoring platform is embedded with artificial intelligence video analysis technology to recognize faces, body postures, and tools, and to accurately judge suspicious objects.

[0017] Compared with the prior art, the beneficial effects of the present invention are: 1. High sensing accuracy: It adopts a high-sensitivity pressure sensor as the sensing device, and its detection accuracy can reach ±0.5mmHg, which is far higher than that of traditional security sensing sensors. It can accurately capture the minute pressure changes caused by intrusion behavior, effectively improve the accuracy of intrusion identification and reduce the false alarm rate. 2. Strong anti-interference capability: The high-sensitivity pressure sensor has strong specificity for pressure signals and is not affected by external factors such as light, temperature, and environmental vibration. It can work stably in complex environments such as night and severe weather, and is applicable to a wide range of scenarios. 3. Excellent privacy protection: Unlike visual sensors, this invention achieves intrusion detection through pressure sensing, eliminating the need to collect personnel image information and fundamentally avoiding the risk of privacy leakage; 4. Precise positioning: Through the distributed layout of multiple sensors and data fusion analysis, the intrusion location can be accurately located, providing an accurate basis for subsequent handling; 5. High scalability: The system can remotely view monitoring data, configure parameters, and update the feature library through a remote monitoring platform, which facilitates system maintenance and upgrades. It also supports linkage with other security systems to improve the overall security level.

[0018] 6. The system of this invention adopts the technical characteristics of high perception and multi-fusion to achieve rapid and efficient construction of a protection system. It utilizes a high-sensitivity pressure sensor as a sensing device to quickly capture suspicious behavior and issue real-time alarms; it uses artificial intelligence video analysis technology to judge suspicious objects; and it employs a remote terminal and system fusion platform with domestically produced chips and databases for signal processing, ensuring information security, high-performance processing of alarm information, and providing alarm signals to other security, fire protection, and other systems for system linkage. Attached Figure Description

[0019] Figure 1 This is a flowchart illustrating the system of the present invention. Detailed Implementation

[0020] The present invention will be further described in detail below with reference to specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0021] like Figure 1 As shown, an intelligent security system based on a high-sensitivity pressure sensor includes: Sensing Module: Used to sense pressure changes within the monitoring area and convert them into analog electrical signals. It includes multiple high-sensitivity pressure sensors. The high-sensitivity pressure sensors employ strain gauge or piezoresistive pressure sensing elements, with a detection accuracy of not less than ±0.5 mmHg. The high-sensitivity pressure sensors are embedded or attached to the surface of a protective structure within the monitoring area. The protective structure includes at least one of walls, doors, windows, and fences. The signal output terminal of each high-sensitivity pressure sensor is connected to the signal input terminal of the signal processing module. The control module achieves precise location of the intrusion by fusing and analyzing the pressure data from the high-sensitivity pressure sensors.

[0022] The signal processing module includes a signal conditioning unit, a filtering unit, and an analog-to-digital conversion unit. The signal conditioning unit amplifies and performs level conversion on the analog electrical signal output by the sensing module. The filtering unit uses a second-order active low-pass filter to filter out high-frequency noise in the conditioned analog electrical signal. The analog-to-digital conversion unit converts the conditioned and filtered analog electrical signal into a digital electrical signal. Data transmission module: It adopts wired or wireless transmission methods to transmit the digital electrical signals output by the signal processing module to the control module. The wired transmission method is RS485 bus or Ethernet, and the wireless transmission method is WiFi, Bluetooth or LoRa communication protocol. Control module: Used to receive digital electrical signals transmitted by the data transmission module, extract pressure data and pressure change trends from the digital electrical signals, compare them with the pre-stored pressure threshold range and pressure change feature library, and determine whether there is any intrusion behavior.

[0023] Preferably, the control module includes a microprocessor and a storage unit. The storage unit pre-stores pressure threshold ranges, a pressure change feature library, historical pressure data, and intrusion alarm records for easy subsequent querying and data analysis. The microprocessor receives digital electrical signals, extracts pressure data and pressure change trends, and compares them with the pre-stored pressure threshold ranges and pressure change feature library to determine whether intrusion behavior exists. The pressure change feature library contains pressure change curves corresponding to different intrusion behaviors, including impact, prying, and climbing. Alarm module: electrically connected to the control module, including an audible and visual alarm unit and a remote alarm unit; when the control module determines that there is an intrusion, it controls the audible and visual alarm unit to start (issue an audible and visual warning signal), and at the same time controls the remote alarm unit to send alarm information to a preset terminal device through a mobile communication network. The alarm information includes the time of intrusion, the location of the monitoring area, and pressure change data. Power module: Includes a voltage regulator unit and a backup power supply. The voltage regulator unit is used to convert the external input voltage into a stable operating voltage required by each module. The backup power supply is a lithium battery pack, which is used to continuously power the system when the external power supply is interrupted.

[0024] Furthermore, the intelligent security system also includes a remote monitoring platform. The remote monitoring platform communicates with the control module through a data transmission module, and is used to receive monitoring data transmitted by the control module in real time. It can remotely view the monitoring status, modify the pressure threshold, and update the pressure change feature database.

[0025] This embodiment provides a solution for preventing theft of cultural relics. A high-sensitivity pressure sensor is concealed within the cultural relic itself or its protective cover (such as a glass cover). It is connected to a remote terminal of a controller via a signal line. Other security systems, such as video surveillance and fire protection systems, are also connected to the remote terminal via signal lines or network cables. When there is a slight touch (including but not limited to human touch or object touch), the pressure of the high-sensitivity pressure sensor changes, sending an alarm signal to the remote terminal. The remote terminal uses an AI model to determine whether the behavior is suspicious. If it is determined to be suspicious, it outputs an alarm signal to link the video and anti-theft systems, pinpointing the location of the suspicious behavior and the situation at the scene, thus enabling the complete anti-theft system to function.

[0026] The above description is only a preferred embodiment of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An intelligent security system based on a high-sensitivity pressure sensor, characterized in that, include: Sensing module: Used to sense pressure changes within the monitoring area and convert them into analog electrical signals; it includes multiple high-sensitivity pressure sensors. Signal processing module: includes signal conditioning unit, filtering unit and analog-to-digital conversion unit; the signal conditioning unit is used to condition the analog electrical signal output by the sensing module, the filtering unit is used to filter out high-frequency noise in the conditioned analog electrical signal, and the analog-to-digital conversion unit is used to convert the conditioned and filtered analog electrical signal into a digital electrical signal; Data transmission module: Used to transmit the digital electrical signals output by the signal processing module to the control module; Control module: Used to receive digital electrical signals transmitted by the data transmission module, extract pressure data and pressure change trends from the digital electrical signals, compare them with the pre-stored pressure threshold range and pressure change feature library, and determine whether there is any intrusion behavior. Alarm module: Electrically connected to the control module, including an audible and visual alarm unit and a remote alarm unit; when the control module determines that there is an intrusion, it controls the audible and visual alarm unit to start and emit an audible and visual warning signal, and at the same time controls the remote alarm unit to send alarm information to preset terminal devices; Power module: Includes a voltage regulator unit and a backup power supply. The voltage regulator unit is used to convert the external input voltage into a stable operating voltage required by each module, and the backup power supply is used to continuously supply power to the system when the external power supply is interrupted.

2. The intelligent security system according to claim 1, characterized in that, The high-sensitivity pressure sensor employs a strain gauge or piezoresistive pressure-sensitive element with a detection accuracy of not less than ±0.5 mmHg. The high-sensitivity pressure sensor is embedded or attached to the surface of a protective structure in the monitoring area. This protective structure includes at least one of walls, doors, windows, or fences. The signal output terminal of each high-sensitivity pressure sensor is connected to the signal input terminal of the signal processing module. The control module achieves precise location of the intrusion by fusing and analyzing the pressure data from the high-sensitivity pressure sensors.

3. The intelligent security system according to claim 1, characterized in that, The filtering unit uses a second-order active low-pass filter for filtering.

4. The intelligent security system according to claim 1, characterized in that, The conditioning includes amplification and level conversion processing.

5. The intelligent security system according to claim 1, characterized in that, The data transmission module adopts either wired or wireless transmission. The wired transmission method is RS485 bus or Ethernet, and the wireless transmission method is WiFi, Bluetooth or LoRa communication protocol.

6. The intelligent security system according to claim 1, characterized in that, The control module includes a microprocessor and a storage unit. The storage unit pre-stores pressure threshold ranges, pressure change feature libraries, historical pressure data, and intrusion alarm records for easy subsequent querying and data analysis. The microprocessor receives digital electrical signals, extracts pressure data and pressure change trends, and compares them with the pre-stored pressure threshold ranges and pressure change feature libraries to determine whether intrusion behavior exists. The pressure change feature library contains pressure change curves corresponding to different intrusion behaviors, including impact, prying, and climbing.

7. The intelligent security system according to claim 1, characterized in that, The remote alarm unit sends alarm information to preset terminal devices via a mobile communication network.

8. The intelligent security system according to claim 1, characterized in that, The alarm information includes the time of the intrusion, the location of the monitored area, and pressure change data.

9. The intelligent security system according to claim 1, characterized in that, The backup power source is a lithium battery pack.

10. The intelligent security system according to claim 1, characterized in that, The intelligent security system also includes a remote monitoring platform. The remote monitoring platform communicates with the control module through a data transmission module and is used to receive monitoring data transmitted by the control module in real time. It can remotely view the monitoring status, modify the pressure threshold, and update the pressure change feature database.

Images