Grating array-based perimeter intrusion alerting method, system, and electronic device

Abstract

The application provides a grating array-based perimeter intrusion alarm method, system and electronic equipment, which comprises the following steps: acquiring channel signals of each sensing channel, demodulating the channel signals, determining a target sensing unit generating disturbance in each sensing channel and a disturbance time of the target sensing unit; when the target sensing unit is a buried type sensing unit, the target sensing unit is a precise disturbance unit, and alarm information is determined based on the disturbance time and the precise disturbance unit; when the target sensing unit is a hanging net type sensing unit, at least one buried type sensing unit associated with the hanging net type sensing unit is determined, a precise disturbance unit is determined based on the disturbance time and at least one historical disturbance time of the at least one buried type sensing unit, and alarm information is determined based on the disturbance time and the precise disturbance unit. The application realizes space-time feature composite positioning, and thus realizes low false alarm rate and high positioning accuracy under the condition of ensuring high sensitivity.

Description

Technical Field

[0001] This invention relates to the field of perimeter intrusion alarm technology, specifically to a perimeter intrusion alarm method, system, and electronic device based on a grating array. Background Technology

[0002] Grating array sensing technology is a new generation of fiber optic sensing technology that has emerged in recent years. Compared with general fiber optic sensing technology, it has advantages such as long detection distance, large response bandwidth, high detection sensitivity, strong environmental adaptability, and good signal reproduction accuracy. It also has good sensing and reproduction capabilities for external vibration signals. Therefore, this paper proposes to apply grating array sensing technology to the field of perimeter intrusion technology to realize perimeter intrusion alarm.

[0003] Existing perimeter intrusion alarm methods suffer from the following technical problems: 1. The single mesh-mounted installation method of the grating array leads to a high frequency of false alarms, especially under windy and rainy conditions. 2. The strong disturbance signals generated by the sensor unit in the mesh-mounted installation method when receiving external intrusion attempts make it impossible to accurately locate the intrusion position.

[0004] Therefore, there is an urgent need to provide a perimeter intrusion alarm method, system, and electronic device based on grating arrays, in order to improve positioning accuracy and reduce false alarm rate while ensuring detection sensitivity. Summary of the Invention

[0005] In view of this, it is necessary to provide a perimeter intrusion alarm method, system and electronic device based on grating array to solve the technical problems of high false alarm rate and low positioning accuracy in the prior art.

[0006] On one hand, the present invention provides a perimeter intrusion alarm method based on a grating array, wherein the grating array includes multiple sensing channels, and each sensing channel includes multiple mesh-type sensing units or multiple buried-type sensing units; the perimeter intrusion alarm method based on the grating array includes:

[0007] The channel signals of each of the sensing channels are acquired and demodulated to determine the target sensing unit that generates the disturbance in each of the sensing channels and the disturbance time of the target sensing unit.

[0008] When the target sensing unit is the buried type sensing unit, the target sensing unit is a precise disturbance unit, and the alarm information is determined based on the disturbance time and the precise disturbance unit.

[0009] When the target sensing unit is the wire mesh type sensing unit, at least one underground type sensing unit associated with the wire mesh type sensing unit is determined, and a precise disturbance unit is determined based on the disturbance time and at least one historical disturbance time of the at least one underground type sensing unit. An alarm message is determined based on the disturbance time and the precise disturbance unit.

[0010] In some possible implementations, determining the target sensing unit that generates the disturbance in each of the sensing channels includes:

[0011] Determine the sensing signal of each of the above-mentioned wire mesh type sensing units or each of the above-mentioned underground type sensing units in each of the above-mentioned sensing channels;

[0012] Determine whether the signal value of the sensing signal is greater than a preset value;

[0013] When the signal value of the sensing signal is greater than the preset value, the wire mesh type sensing unit or the underground type sensing unit is the target sensing unit.

[0014] In some possible implementations, the sensing signal includes a wire mesh sensing signal and a buried sensing signal, and the preset value includes a preset signal absolute value and a preset signal energy value; determining whether the signal value of the sensing signal is greater than the preset value includes:

[0015] Determine whether the absolute value of the buried sensor signal is greater than the preset absolute value;

[0016] Determine whether the signal energy value of the grid-connected sensor signal is greater than the preset signal energy value;

[0017] When the signal value of the sensing signal is greater than the preset value, the wire mesh type sensing unit or the underground type sensing unit is the target sensing unit, including:

[0018] When the absolute value of the buried sensor signal is greater than the preset absolute value, the mesh-type sensor unit is the target sensor unit; when the energy value of the mesh-type sensor signal is greater than the preset energy value, the mesh-type sensor unit is the target sensor unit.

[0019] In some possible implementations, the target sensing unit includes at least one target sensing sub-unit, and the disturbance time includes at least one disturbance sub-time; when the target sensing unit is the wire mesh type sensing unit, at least one underground type sensing unit associated with the wire mesh type sensing unit is determined, and a precise disturbance unit is determined based on the disturbance time and at least one historical disturbance time of the at least one underground type sensing unit, and alarm information is determined based on the disturbance time and the precise disturbance unit, including:

[0020] Based on temporal continuity, the at least one target sensing subunit is integrated into a perturbation segment;

[0021] Identify at least one underground type sensor unit associated with each of the target sensor subunits in the at least one target sensor subunit, determine the precise disturbance unit based on the at least one disturbance sub-time and at least one historical disturbance time of the at least one underground type sensor unit, and determine the alarm information based on the at least one disturbance sub-time and the precise disturbance unit.

[0022] In some possible implementations, the target sensing unit includes a target sensing sub-unit, and the disturbance time includes a disturbance sub-time; determining the precise disturbance unit based on the at least one disturbance sub-time and at least one historical disturbance time of the at least one buried-type sensing unit includes:

[0023] Determine at least one first time difference between the perturbation sub-time and the at least one historical perturbation time;

[0024] Determine whether there exists a first target time difference less than a time difference threshold among the at least one first time difference;

[0025] When there is a first target time difference less than a time difference threshold among the at least one first time difference, the target sensing subunit is used as the precise perturbation unit.

[0026] In some possible implementations, the target sensing unit includes at least two target sensing sub-units, and the disturbance time includes at least two disturbance sub-times; determining the precise disturbance unit based on the at least one disturbance sub-time and at least one historical disturbance time of the at least one buried type sensing unit includes:

[0027] Determine at least one second time difference between each of the at least two perturbation sub-times and the at least one historical perturbation time, and determine the second target time difference with the smallest time difference among the at least one second time difference;

[0028] The target sensing subunit corresponding to the second target time difference is used as the precise perturbation unit.

[0029] In some possible implementations, determining the alarm information based on the disturbance time and the precise disturbance unit includes:

[0030] Obtain the time of the last alarm and determine whether the time difference between the time of the disturbance and the time of the last alarm is greater than a preset time difference.

[0031] When the time difference between the disturbance time and the previous alarm time is greater than a preset time difference, the physical zone information corresponding to the precise disturbance unit is determined, and the physical zone information and the disturbance time are used as the alarm information.

[0032] In some possible implementations, determining the physical defense zone information corresponding to the precise disturbance unit includes:

[0033] Construct the correspondence between the numbers of the multiple wire mesh type sensing units and the multiple underground type sensing units and the physical defense zone information;

[0034] Obtain the number of the precision disturbance unit, and determine the physical defense zone information based on the correspondence and the number of the precision disturbance unit.

[0035] On the other hand, the present invention also provides a perimeter intrusion alarm system based on a grating array, wherein the grating array includes multiple sensing channels, and each sensing channel includes multiple mesh-type sensing units or multiple buried-type sensing units; the perimeter intrusion alarm system based on the grating array includes:

[0036] The channel signal demodulation unit is used to acquire the channel signal of each of the sensing channels, demodulate the channel signal, and determine the target sensing unit that generates the disturbance in each of the sensing channels and the disturbance time of the target sensing unit.

[0037] The first alarm information determination unit is used to determine the alarm information based on the disturbance time and the precise disturbance unit when the target sensing unit is the buried type sensing unit.

[0038] The second alarm information determination unit is used to determine at least one underground type sensor unit associated with the net-type sensor unit when the target sensor unit is the net-type sensor unit, and to determine the precise disturbance unit based on the disturbance time and at least one historical disturbance time of the at least one underground type sensor unit, and to determine alarm information based on the disturbance time and the precise disturbance unit.

[0039] On the other hand, the present invention also provides an electronic device, including a memory and a processor, wherein,

[0040] The memory is used to store programs;

[0041] The processor, coupled to the memory, is used to execute the program stored in the memory to implement the steps in the perimeter intrusion alarm method based on a grating array as described in any of the above possible implementations.

[0042] The beneficial effects of the above embodiments are as follows: The perimeter intrusion alarm method based on grating array provided by the present invention, by setting each sensing channel in the grating array to include multiple mesh-type sensing units or multiple buried-type sensing units, takes advantage of the characteristic that buried-type sensing units are less affected by severe weather conditions such as wind and rain. This enables the perimeter intrusion alarm method based on grating array to effectively identify and output signals of intrusion behavior near the perimeter in windy and rainy weather conditions, while greatly reducing the high-frequency false alarm phenomenon that is common in perimeter intrusion alarms using a single mesh-type sensing unit, and greatly reducing the possibility of false alarm record output under windy and rainy conditions. Secondly, this invention, by setting the target sensing unit to be a wire mesh type sensing unit, determines at least one buried type sensing unit associated with the wire mesh type sensing unit, and determines the precise disturbance unit based on the disturbance time and at least one historical disturbance time of the at least one buried type sensing unit, and determines the alarm information based on the disturbance time and the precise disturbance unit, realizes spatiotemporal feature composite positioning, avoids the problem of inaccurate positioning caused by the high sensitivity of the wire mesh type sensing unit with wire mesh installation, and achieves low false alarm rate and high positioning accuracy under high sensitivity. Attached Figure Description

[0043] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0044] Figure 1 A schematic flowchart of an embodiment of the perimeter intrusion alarm method based on grating array provided by the present invention;

[0045] Figure 2 A schematic diagram of an embodiment of the grating array provided by the present invention;

[0046] Figure 3 For the present invention Figure 1 A schematic flowchart of an embodiment of determining the target sensing unit in S103;

[0047] Figure 4 For the present invention Figure 3 A schematic diagram of an embodiment of S302;

[0048] Figure 5 This is a schematic diagram of a process for determining alarm information in one embodiment of the present invention;

[0049] Figure 6A schematic diagram of an embodiment of the underground sensing unit providing the present invention for generating sensing signals;

[0050] Figure 7 A schematic diagram of an embodiment of the wire mesh type sensing unit providing the present invention for generating sensing signals;

[0051] Figure 8 For the present invention Figure 1 A schematic diagram of an embodiment of S103;

[0052] Figure 9 For the present invention Figure 8 A schematic diagram of an embodiment of determining the precise disturbance unit in S802;

[0053] Figure 10 For the present invention Figure 8 A schematic diagram of another embodiment of determining the precise disturbance unit in S802;

[0054] Figure 11 For the present invention Figure 5 A flowchart illustrating an embodiment of determining physical defense zone information in S502;

[0055] Figure 12 A schematic diagram of an embodiment of the perimeter intrusion alarm system based on a grating array provided by the present invention;

[0056] Figure 13 A schematic diagram of an embodiment of the electronic device provided by the present invention. Detailed Implementation

[0057] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0058] It should be understood that the illustrative drawings are not drawn to scale. The flowcharts used in this invention illustrate operations implemented according to some embodiments of the invention. It should be understood that the operations in the flowcharts may be implemented out of order, and steps without logical contextual relationships may be reversed or performed simultaneously. Furthermore, those skilled in the art, guided by the content of this invention, may add one or more other operations to the flowcharts, or remove one or more operations from the flowcharts. Some block diagrams shown in the drawings are functional entities and do not necessarily correspond to physically or logically independent entities. These functional entities may be implemented in software, in one or more hardware modules or integrated circuits, or in different network and / or processor systems and / or microcontroller systems.

[0059] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0060] This invention provides a perimeter intrusion alarm method, system, and electronic device based on a grating array, which are described below.

[0061] Figure 1 This is a schematic flowchart of an embodiment of the perimeter intrusion alarm method based on a grating array provided by the present invention, as shown below. Figure 1 As shown, the perimeter intrusion alarm method based on grating array includes:

[0062] S101. Acquire the channel signal of each sensing channel, demodulate the channel signal, and determine the target sensing unit that generates disturbance in each sensing channel and the disturbance time of the target sensing unit.

[0063] S102. When the target sensing unit is a buried type sensing unit, the target sensing unit is a precision disturbance unit, and the alarm information is determined based on the disturbance time and the precision disturbance unit.

[0064] S103. When the target sensing unit is a wire mesh type sensing unit, determine at least one underground type sensing unit associated with the wire mesh type sensing unit, and determine the precise disturbance unit based on the disturbance time and at least one historical disturbance time of the at least one underground type sensing unit, and determine the alarm information based on the disturbance time and the precise disturbance unit.

[0065] Compared with existing technologies, the perimeter intrusion alarm method based on grating array provided in this invention, by setting each sensing channel in the grating array to include multiple mesh-type sensing units or multiple buried-type sensing units, takes advantage of the fact that buried-type sensing units are less affected by severe weather conditions such as wind and rain. This allows the perimeter intrusion alarm method based on grating array to effectively identify and output signals to intrusion behaviors near the perimeter in windy and rainy weather conditions, while greatly reducing the high-frequency false alarm phenomenon commonly found in perimeter intrusion alarms using a single mesh-type sensing unit, and significantly reducing the possibility of false alarm record output under windy and rainy conditions. Secondly, this embodiment of the invention, by setting the target sensing unit to be a wire mesh type sensing unit, determines at least one underground type sensing unit associated with the wire mesh type sensing unit, and determines the precise disturbance unit based on the disturbance time and at least one historical disturbance time of the at least one underground type sensing unit, and determines the alarm information based on the disturbance time and the precise disturbance unit, realizes spatiotemporal feature composite positioning, avoids the problem of inaccurate positioning caused by the high sensitivity of the wire mesh type sensing unit with wire mesh installation, and achieves low false alarm rate and high positioning accuracy under high sensitivity.

[0066] Specifically, in step S101, the channel signals of each sensing channel are acquired by real-time acquisition using a signal acquisition device. Furthermore, the demodulation of the channel signals in step S101 is performed using a demodulator.

[0067] In a specific embodiment of the present invention, the grating array includes four sensing channels, comprising a total of 1200 grating array sensing units. Channels 1 and 2 each include 300 mesh-type sensing units, and channels 3 and 4 each include 300 buried-type sensing units. The spacing between two adjacent mesh-type or buried-type sensing units is 5 meters. Channel 3 is an associated channel of channel 1, and channel 4 is an associated channel of channel 2.

[0068] Among them, the grating array sensing unit is a grating array vibration detector.

[0069] It should be noted that the number of buried sensor units associated with the wire mesh type sensor unit should be set or adjusted according to the actual application scenario. In a specific embodiment of the present invention, such as... Figure 2 As shown, a wire mesh type sensing unit includes 5 associated underground type sensing units.

[0070] In some embodiments of the present invention, such as Figure 3 As shown, determining the target sensing unit that generates disturbance in each sensing channel in step S101 includes:

[0071] S301. Determine the sensing signals of each wire mesh type sensing unit or each underground type sensing unit in each sensing channel.

[0072] S302. Determine whether the signal value of the sensor signal is greater than the preset value;

[0073] S303. When the signal value of the sensing signal is greater than the preset value, the wire mesh type sensing unit or the underground type sensing unit is the target sensing unit.

[0074] By identifying sensing units whose signal values ​​are greater than a preset value as target sensing units, the reliability and accuracy of the identified target sensing units can be improved.

[0075] It should be noted that the preset values ​​can be set or adjusted according to the actual application scenario and experience, and no specific restrictions are made here.

[0076] To further improve the reliability of the identified target sensing units, in some embodiments of the present invention, the sensing signals include wire mesh sensing signals and buried sensing signals, and the preset values ​​include preset signal absolute values ​​and preset signal energy values; then, as follows... Figure 4 As shown, step S302 includes:

[0077] S401. Determine whether the absolute value of the buried sensor signal is greater than the preset absolute value.

[0078] S402. Determine whether the signal energy value of the grid-connected sensor signal is greater than the preset signal energy value;

[0079] Then step S303 includes:

[0080] When the absolute value of the buried sensor signal is greater than a preset absolute value, the wire mesh type sensor unit is the target sensor unit; when the signal energy value of the wire mesh sensor signal is greater than a preset signal energy value, the wire mesh type sensor unit is the target sensor unit.

[0081] This invention improves the accuracy and reliability of identifying target sensor units by determining whether a buried sensor unit is a target sensor unit based on the absolute value of the signal and by determining whether a wire mesh sensor unit is a target sensor unit based on the signal energy value. In other words, it determines whether a buried sensor unit or a wire mesh sensor unit is a target sensor unit based on different judgment indicators.

[0082] The signal energy value refers to the cumulative sum of the squares of the signal over a preset time period.

[0083] In some embodiments of the present invention, such as Figure 5As shown, determining the alarm information based on the disturbance time and the precise disturbance unit in step S102 and / or step S103 includes:

[0084] S501. Obtain the time of the last alarm and determine whether the time difference between the time of the disturbance and the time of the last alarm is greater than a preset time difference.

[0085] S502. When the time difference between the disturbance time and the previous alarm time is greater than the preset time difference, determine the physical zone information corresponding to the precise disturbance unit, and use the physical zone information and the disturbance time as alarm information.

[0086] This invention, by setting the physical zone information corresponding to the precise disturbance unit to be determined only when the time difference between the disturbance time and the previous alarm time is greater than a preset time difference, and using the physical zone information and the disturbance time as alarm information, can avoid repeated alarms and improve the reliability and rationality of perimeter intrusion alarms.

[0087] It should be noted that in some specific application scenarios, such as when a disturbance source enters the detection area from a certain point and moves along the buried sensing unit, causing disturbance, Figure 6 As shown, the target sensing unit is the buried type sensing unit that ultimately generates the disturbance, that is: Figure 6 The target sensing unit is the buried type sensing unit numbered 352.

[0088] Among them, physical defense zone information can be used to pinpoint the spatial location of precision disturbance units.

[0089] It should also be noted that the preset time difference can be set or adjusted according to the actual application scenario and experience value, and no specific limitation is made here.

[0090] Because the sensitivity of the wire mesh type sensor unit is extremely high, therefore, Figure 7 As shown, when a mesh-type sensing unit is disturbed, at least one adjacent mesh-type sensing unit is also judged to be disturbed. Therefore, in some embodiments of the present invention, the target sensing unit includes at least one target sensing sub-unit, and the disturbance time includes at least one disturbance sub-time. Figure 8 As shown, step S103 includes:

[0091] S801, Integrate at least one target sensing subunit into a perturbation segment based on time continuity;

[0092] S802, determine at least one buried type sensor unit associated with each target sensor subunit in at least one target sensor subunit, and determine a precise disturbance unit based on at least one disturbance sub-time and at least one historical disturbance time of at least one buried type sensor unit, and determine alarm information based on at least one disturbance sub-time and the precise disturbance unit.

[0093] Specifically, step S801 involves integrating at least one target sensing sub-unit within a preset time period into a disturbance segment. For example, when the preset time period is 10 seconds, all target sensing sub-units identified as having disturbances within these 10 seconds are integrated into a disturbance segment in chronological order.

[0094] This invention integrates at least one target sensing subunit into a disturbance segment based on time continuity, and then determines alarm information based on the disturbance segment. This avoids triggering two alarms within a preset time period, further improving the reliability and accuracy of alarm information and reducing the false alarm rate.

[0095] In a specific embodiment of the present invention, the target sensing unit includes a target sensing subunit, and the disturbance time includes a disturbance sub-time; then as follows Figure 9 As shown, the precise perturbation unit determined in step S802 includes:

[0096] S901. Determine at least one first time difference between the perturbation sub-time and at least one historical perturbation time;

[0097] S902. Determine whether there is a first target time difference that is less than the time difference threshold in at least one first time difference;

[0098] S903. When there is a first target time difference less than the time difference threshold in at least one first time difference, the target sensing subunit is used as a precise disturbance unit.

[0099] In this embodiment of the invention, when a first target time difference less than a time difference threshold exists in at least one first time difference, the target sensing subunit is used as a precise perturbation unit, which ensures the accuracy of the precise perturbation unit.

[0100] It should be noted that if there are two first time differences less than the time difference threshold among at least one first time difference, the first time difference with the smallest time difference shall be taken as the first target time difference to ensure the accuracy of the precision perturbation unit.

[0101] In a specific embodiment of the present invention, the target sensing unit includes at least two target sensing sub-units, and the disturbance time includes at least two disturbance sub-times; then as follows Figure 10 As shown, the precise perturbation unit determined in step S802 includes:

[0102] S1001. Determine at least one second time difference between each of the at least two perturbation sub-times and at least one historical perturbation time, and determine the second target time difference with the smallest time difference among the at least two second time differences;

[0103] S1002, The target sensing sub-unit corresponding to the second target time difference is used as the precise perturbation unit.

[0104] In this embodiment of the invention, when the target sensing unit includes at least two target sensing sub-units, the second target time difference with the smallest time difference among at least one second time difference is used as the corresponding target sensing sub-unit as the precision perturbation unit, which can ensure the accuracy and reliability of the precision perturbation unit.

[0105] In some embodiments of the present invention, such as Figure 11 As shown, determining the physical defense zone information corresponding to the precise disturbance unit in step S502 includes:

[0106] S1101. Construct the correspondence between the numbers of multiple wire mesh type sensing units and multiple underground type sensing units and physical defense zone information;

[0107] S1102. Obtain the number of the precision disturbance unit, and determine the physical defense zone information based on the correspondence and the number of the precision disturbance unit.

[0108] This invention improves the speed of physical defense zone information determination by constructing a correspondence between the number of sensing units and physical defense zone information, and by accurately determining the number of perturbation units and their correspondence.

[0109] To verify the effectiveness of the perimeter intrusion alarm method based on grating array proposed in this embodiment of the invention, five simulated intrusion tests were conducted at randomly selected locations in the relevant area. The test results are shown in Table 1.

[0110] Table 1 Test Results

[0111]

[0112] Table 1 shows that in the first, second, and fourth experiments, the disturbance was directed at the buried type sensor unit. In these cases, regardless of the number of mesh-type sensor units disturbed, the associated buried type sensor unit remained relatively singular, resulting in accurate positioning. In the third and fifth experiments, the disturbance was directed along the buried type sensor unit. These buried type sensor units had a specific temporal order. By identifying the last disturbed buried type sensor unit, the mesh-type disturbed units were screened in reverse to obtain the final accurate positioning point, with a positioning error within 5 meters. (Due to the sensitivity of the mesh-type sensor unit, no mesh-type disturbance with a disturbance quantity of 1 was observed in the experiment.)

[0113] In summary, the perimeter intrusion alarm method based on grating array of the present invention achieves spatiotemporal composite judgment based on mesh-type sensing units and buried-type sensing units, which can achieve accurate positioning of intrusion behavior while ensuring high sensitivity, and the positioning accuracy can be guaranteed to be within 5m.

[0114] To better implement the perimeter intrusion alarm method based on grating arrays in the embodiments of the present invention, based on the perimeter intrusion alarm method based on grating arrays, the corresponding method is as follows: Figure 12 As shown, this embodiment of the invention also provides a perimeter intrusion alarm system based on a grating array. The grating array includes multiple sensing channels, and each sensing channel includes multiple mesh-type sensing units or multiple buried-type sensing units. The perimeter intrusion alarm system 1200 based on the grating array includes:

[0115] The channel signal demodulation unit 1201 is used to acquire the channel signals of each sensing channel, demodulate the channel signals, and determine the target sensing unit that generates disturbance in each sensing channel and the disturbance time of the target sensing unit.

[0116] The first alarm information determination unit 1202 is used to determine alarm information based on the disturbance time and the precise disturbance unit when the target sensing unit is a buried type sensing unit.

[0117] The second alarm information determination unit 1203 is used to determine at least one underground type sensor unit associated with the net-type sensor unit when the target sensor unit is a net-type sensor unit, and to determine the precise disturbance unit based on the disturbance time and at least one historical disturbance time of the at least one underground type sensor unit, and to determine alarm information based on the disturbance time and the precise disturbance unit.

[0118] The perimeter intrusion alarm system 1200 based on grating array provided in the above embodiments can realize the technical solutions described in the above embodiments of the perimeter intrusion alarm method based on grating array. The specific implementation principles of each module or unit can be found in the corresponding content in the above embodiments of the perimeter intrusion alarm method based on grating array, and will not be repeated here.

[0119] like Figure 13 As shown, the present invention also provides an electronic device 1300. The electronic device 1300 includes a processor 1301, a memory 1302, and a display 1303. Figure 13 Only some components of the electronic device 1300 are shown, but it should be understood that it is not required to implement all of the components shown, and more or fewer components may be implemented instead.

[0120] In some embodiments, memory 1302 may be an internal storage unit of electronic device 1300, such as a hard disk or memory of electronic device 1300. In other embodiments, memory 1302 may also be an external storage device of electronic device 1300, such as a plug-in hard disk, smart media card (SMC), secure digital (SD) card, flash card, etc. equipped on electronic device 1300.

[0121] Furthermore, the memory 1302 may include both internal storage units of the electronic device 1300 and external storage devices. The memory 1302 is used to store application software and various types of data installed on the electronic device 1300.

[0122] In some embodiments, processor 1301 may be a central processing unit (CPU), microprocessor, or other data processing chip, used to run program code stored in memory 1302 or process data, such as the perimeter intrusion alarm method based on grating array in this invention.

[0123] In some embodiments, display 1303 may be an LED display, a liquid crystal display, a touch-sensitive liquid crystal display, or an OLED (Organic Light-Emitting Diode) touchscreen. Display 1303 is used to display information from electronic device 1300 and to display a visual user interface. Components 1301-1303 of electronic device 1300 communicate with each other via a system bus.

[0124] In some embodiments of the present invention, when the processor 1301 executes the perimeter intrusion alarm program based on a grating array in the memory 1302, the following steps can be implemented:

[0125] The channel signals of each sensing channel are acquired and demodulated to determine the target sensing unit that generates disturbance in each sensing channel and the disturbance time of the target sensing unit.

[0126] When the target sensing unit is a buried type sensing unit, the target sensing unit is a precise disturbance unit, and the alarm information is determined based on the disturbance time and the precise disturbance unit.

[0127] When the target sensing unit is a wire mesh type sensing unit, at least one underground type sensing unit associated with the wire mesh type sensing unit is identified, and a precise disturbance unit is determined based on the disturbance time and at least one historical disturbance time of the at least one underground type sensing unit. Alarm information is determined based on the disturbance time and the precise disturbance unit.

[0128] It should be understood that when the processor 1301 executes the perimeter intrusion alarm program based on the grating array in the memory 1302, in addition to the functions mentioned above, it can also perform other functions, as can be found in the description of the corresponding method embodiments above.

[0129] Furthermore, the embodiments of the present invention do not specifically limit the type of the electronic device 1300 mentioned. The electronic device 1300 can be a mobile phone, tablet computer, personal digital assistant (PDA), wearable device, laptop computer, or other portable electronic device. Exemplary embodiments of portable electronic devices include, but are not limited to, portable electronic devices running iOS, Android, Microsoft, or other operating systems. The aforementioned portable electronic device can also be other portable electronic devices, such as a laptop computer with a touch-sensitive surface (e.g., a touch panel). It should also be understood that in some other embodiments of the present invention, the electronic device 1300 may not be a portable electronic device, but rather a desktop computer with a touch-sensitive surface (e.g., a touch panel).

[0130] Accordingly, this application also provides a computer-readable storage medium for storing computer-readable programs or instructions. When the programs or instructions are executed by a processor, they can implement the steps or functions of the perimeter intrusion alarm method based on grating array provided in the above-described method embodiments.

[0131] Those skilled in the art will understand that all or part of the processes of the methods described in the above embodiments can be implemented by a computer program instructing related hardware (such as a processor, controller, etc.), and the computer program can be stored in a computer-readable storage medium. The computer-readable storage medium may be a disk, optical disk, read-only memory, or random access memory, etc.

[0132] The foregoing has provided a detailed description of the perimeter intrusion alarm method, system, and electronic device based on grating array provided by the present invention. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A perimeter intrusion alarm method based on a grating array, characterized in that, The grating array includes multiple sensing channels, and each sensing channel includes multiple mesh-type sensing units or multiple buried-type sensing units; the perimeter intrusion alarm method based on the grating array includes: The channel signals of each of the sensing channels are acquired and demodulated to determine the target sensing unit that generates the disturbance in each of the sensing channels and the disturbance time of the target sensing unit. When the target sensing unit is the buried type sensing unit, the target sensing unit is a precise disturbance unit, and the alarm information is determined based on the disturbance time and the precise disturbance unit. When the target sensing unit is the wire mesh type sensing unit, at least one underground type sensing unit associated with the wire mesh type sensing unit is determined, and a precise disturbance unit is determined based on the disturbance time and at least one historical disturbance time of the at least one underground type sensing unit. Alarm information is determined based on the disturbance time and the precise disturbance unit, including: obtaining the last alarm time and determining whether the time difference between the disturbance time and the last alarm time is greater than a preset time difference; when the time difference between the disturbance time and the last alarm time is greater than the preset time difference, the physical defense zone information corresponding to the precise disturbance unit is determined, and the physical defense zone information and the disturbance time are used as the alarm information.

2. The perimeter intrusion alarm method based on grating array according to claim 1, characterized in that, The determination of the target sensing unit that generates disturbance in each of the sensing channels includes: Determine the sensing signal of each of the above-mentioned wire mesh type sensing units or each of the above-mentioned underground type sensing units in each of the above-mentioned sensing channels; Determine whether the signal value of the sensing signal is greater than a preset value; When the signal value of the sensing signal is greater than the preset value, the wire mesh type sensing unit or the underground type sensing unit is the target sensing unit.

3. The perimeter intrusion alarm method based on grating array according to claim 2, characterized in that, The sensing signals include wire mesh sensing signals and underground sensing signals, and the preset values ​​include preset signal absolute values ​​and preset signal energy values. The step of determining whether the signal value of the sensing signal is greater than a preset value includes: Determine whether the absolute value of the buried sensor signal is greater than the preset absolute value; Determine whether the signal energy value of the grid-connected sensor signal is greater than the preset signal energy value; When the signal value of the sensing signal is greater than the preset value, the wire mesh type sensing unit or the underground type sensing unit is the target sensing unit, including: When the absolute value of the buried sensor signal is greater than the preset absolute value, the mesh-type sensor unit is the target sensor unit; when the energy value of the mesh-type sensor signal is greater than the preset energy value, the mesh-type sensor unit is the target sensor unit.

4. The perimeter intrusion alarm method based on a grating array according to claim 1, characterized in that, The target sensing unit includes at least one target sensing sub-unit, and the disturbance time includes at least one disturbance sub-time. When the target sensing unit is the wire mesh type sensing unit, at least one underground type sensing unit associated with the wire mesh type sensing unit is determined, and a precise disturbance unit is determined based on the disturbance time and at least one historical disturbance time of the at least one underground type sensing unit. Alarm information is determined based on the disturbance time and the precise disturbance unit, including: Based on temporal continuity, the at least one target sensing subunit is integrated into a perturbation segment; Identify at least one underground type sensor unit associated with each of the target sensor subunits in the at least one target sensor subunit, determine the precise disturbance unit based on the at least one disturbance sub-time and at least one historical disturbance time of the at least one underground type sensor unit, and determine the alarm information based on the at least one disturbance sub-time and the precise disturbance unit.

5. The perimeter intrusion alarm method based on a grating array according to claim 4, characterized in that, The target sensing unit includes a target sensing subunit, and the disturbance time includes a disturbance sub-time; determining the precise disturbance unit based on the at least one disturbance sub-time and at least one historical disturbance time of the at least one buried type sensing unit includes: Determine at least one first time difference between the perturbation sub-time and the at least one historical perturbation time; Determine whether there exists a first target time difference less than a time difference threshold among the at least one first time difference; When there is a first target time difference less than a time difference threshold among the at least one first time difference, the target sensing subunit is used as the precise perturbation unit.

6. The perimeter intrusion alarm method based on a grating array according to claim 4, characterized in that, The target sensing unit includes at least two target sensing sub-units, and the disturbance time includes at least two disturbance sub-times; determining the precise disturbance unit based on the at least one disturbance sub-time and at least one historical disturbance time of the at least one buried type sensing unit includes: Determine at least one second time difference between each of the at least two perturbation sub-times and the at least one historical perturbation time, and determine the second target time difference with the smallest time difference among the at least one second time difference; The target sensing subunit corresponding to the second target time difference is used as the precise perturbation unit.

7. The perimeter intrusion alarm method based on a grating array according to claim 4, characterized in that, The determination of the physical defense zone information corresponding to the precise disturbance unit includes: Construct the correspondence between the numbers of the multiple wire mesh type sensing units and the multiple underground type sensing units and the physical defense zone information; Obtain the number of the precision disturbance unit, and determine the physical defense zone information based on the correspondence and the number of the precision disturbance unit.

8. A perimeter intrusion alarm system based on a grating array, characterized in that, The grating array includes multiple sensing channels, and each sensing channel includes multiple mesh-type sensing units or multiple buried-type sensing units; the perimeter intrusion alarm system based on the grating array includes: The channel signal demodulation unit is used to acquire the channel signal of each of the sensing channels, demodulate the channel signal, and determine the target sensing unit that generates the disturbance in each of the sensing channels and the disturbance time of the target sensing unit. The first alarm information determination unit is used to determine the alarm information based on the disturbance time and the precise disturbance unit when the target sensing unit is the buried type sensing unit. The second alarm information determination unit is used to determine at least one underground type sensor unit associated with the wire mesh type sensor unit when the target sensor unit is the wire mesh type sensor unit, and to determine a precise disturbance unit based on the disturbance time and at least one historical disturbance time of the at least one underground type sensor unit, and to determine alarm information based on the disturbance time and the precise disturbance unit, including: obtaining the last alarm time and determining whether the time difference between the disturbance time and the last alarm time is greater than a preset time difference; when the time difference between the disturbance time and the last alarm time is greater than the preset time difference, determining the physical defense zone information corresponding to the precise disturbance unit, and using the physical defense zone information and the disturbance time as the alarm information.

9. An electronic device, characterized in that, Including memory and processor, among which, The memory is used to store programs; The processor, coupled to the memory, is used to execute the program stored in the memory to implement the steps in the perimeter intrusion alarm method based on a grating array as described in any one of claims 1 to 7.

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