CN114979959B - Regional security monitoring method, computer device and storage medium - Google Patents
Regional security monitoring method, computer device and storage medium Download PDFInfo
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- CN114979959B CN114979959B CN202210686547.6A CN202210686547A CN114979959B CN 114979959 B CN114979959 B CN 114979959B CN 202210686547 A CN202210686547 A CN 202210686547A CN 114979959 B CN114979959 B CN 114979959B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
- H04W4/029—Location-based management or tracking services
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N7/181—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a plurality of remote sources
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
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Abstract
The invention discloses a regional safety monitoring method, a computer device and a storage medium, which comprises the steps of establishing a space coordinate system of a target region, measuring a first coordinate through communication between a base station and a target terminal, monitoring the change of the first coordinate, determining the moving track of the target terminal, establishing mapping from the moving track to a monitoring video and the like. The invention can realize the positioning tracking of the target terminal and the linkage of the video monitoring of the target terminal, does not need to analyze and process the monitoring videos shot by a plurality of video monitoring points in the target area, can directly call the monitoring videos shot by the video monitoring points near the motion trail of the target terminal, realizes the automatic switching and the sequential playing of the monitoring videos, improves the tracking efficiency by tracking or restoring the motion trail of the target terminal through the monitoring videos, and uses a space coordinate system with higher positioning precision, stronger stability and better confidentiality. The invention is widely applied to the technical field of safety monitoring.
Description
Technical Field
The invention relates to the technical field of safety monitoring, in particular to a regional safety monitoring method, a computer device and a storage medium.
Background
In industrial parks and other situations, it is necessary to monitor the security of specific devices or persons for theft prevention, security, traceability, and the like. Since the device or person is usually movable around the campus, it is necessary to monitor the device or person based on the localization tracking. At present, satellite positioning systems such as GPS and big dipper positioning system can fix a position the equipment on ground, though can be applied to carry out localization tracking to the equipment in the garden, but the garden has the privacy on the one hand, uses outside satellite positioning system to fix a position the equipment in the garden, has the possibility that valuable position data reveals, and on the other hand satellite positioning system's job stabilization nature and positioning accuracy receive the influence such as weather and building easily to make localization tracking inefficacy.
Disclosure of Invention
The invention aims to provide a regional security monitoring method, a computer device and a storage medium, aiming at the technical problems that the specific equipment or people cannot be conveniently and safely monitored based on positioning and tracking in the specific regions such as the park at present.
In one aspect, an embodiment of the present invention includes a method for monitoring regional security, including:
establishing a space coordinate system of a target area; a plurality of base stations and a plurality of video monitoring points are arranged in the target area;
determining a first coordinate through communication between at least one of the base stations and a target terminal; the first coordinate is a coordinate of the target terminal in the space coordinate system;
monitoring the change of the first coordinate, and determining the movement track of the target terminal;
establishing a mapping from the movement track to a surveillance video; the monitoring video is a video shot by the video monitoring point.
Further, the regional security monitoring method further includes:
determining a coordinate range of a safety region in the space coordinate system; the safety area is an area in the target area;
and triggering a safety alarm when the movement track is detected to enter the coordinate range.
Further, the regional safety monitoring method further comprises the following steps:
and when the mobile track is detected to enter the coordinate range, calling the monitoring video shot by the video monitoring point closest to the tail end of the mobile track.
Further, the determining the first coordinate through communication between at least one of the base stations and the target terminal includes:
determining a distance between the target terminal and at least one base station through communication between the at least one base station and the target terminal;
determining a curve where the target terminal is located according to the distance between the target terminal and the base station;
and determining the first coordinate according to the intersection point of the curves where the target terminal is located.
Further, the establishing a mapping from the movement track to a monitoring video includes:
determining a first coordinate time sequence according to the moving track; the first coordinate time sequence comprises a plurality of first coordinates which are sequenced according to the determination time;
and for any one first coordinate in the first coordinate time sequence, calling a monitoring video shot by a video monitoring point closest to the first coordinate, and marking the playing time corresponding to the called monitoring video on a playing time axis according to the time sequence of the first coordinate in the first coordinate time sequence.
Further, the establishing a mapping from the movement track to a surveillance video further includes:
and playing the monitoring videos corresponding to the playing times on the playing time axis according to the time sequence determined by the playing time axis.
Further, the establishing a spatial coordinate system of the target area includes:
carrying out global positioning on each base station, determining the position of each base station, and recording the successful positioning time of each base station;
determining a first base station when the positioning of each base station is successful; the first base station is a base station successfully positioned at the latest in all base stations;
determining a geometric center according to the position of each base station;
a connecting line of a projection point of the first base station on the ground and a projection point of the geometric center on the ground is taken as a first coordinate axis;
taking the geometric center as a projection point on the ground as an origin;
establishing a second coordinate axis which is perpendicular to the first coordinate axis and parallel to the ground through the origin;
establishing a third coordinate axis perpendicular to the first coordinate axis and the second coordinate axis through the origin;
and establishing a rectangular coordinate system according to the first coordinate axis, the second coordinate axis and the third coordinate axis.
Further, the establishing a spatial coordinate system of the target area includes:
carrying out global positioning on each base station, determining the position of each base station, and recording the successful positioning time of each base station;
determining a first base station and a second base station when the base stations are successfully positioned; the first base station is a base station which is successfully positioned at the latest in all base stations, and the second base station is a base station which is successfully positioned at the latest except the first base station;
a connecting line of the projection point of the first base station on the ground and the projection point of the second base station on the ground is taken as a first coordinate axis;
determining a geometric center according to the position of each base station;
taking a point on the first coordinate axis closest to a projection point of the geometric center on the ground as an origin;
establishing a second coordinate axis which is perpendicular to the first coordinate axis and parallel to the ground through the origin;
establishing a third coordinate axis perpendicular to the first coordinate axis and the second coordinate axis through the origin;
and establishing a rectangular coordinate system according to the first coordinate axis, the second coordinate axis and the third coordinate axis.
In another aspect, an embodiment of the present invention further includes a computer apparatus, including a memory and a processor, where the memory is used to store at least one program, and the processor is used to load the at least one program to perform the method for monitoring regional security in the embodiment.
In another aspect, the present invention further includes a storage medium in which a program executable by a processor is stored, and the program executable by the processor is used to execute the regional security monitoring method in the embodiment.
The invention has the beneficial effects that: the area safety monitoring method in the embodiment can realize the positioning tracking of the target terminal and the linkage of the video monitoring of the target terminal, when the video monitoring is needed to be carried out on the target terminal, the monitoring videos shot by a plurality of video monitoring points in the target area do not need to be analyzed and processed through manual work or image analysis, the monitoring videos shot by the video monitoring points near the motion track of the target terminal can be directly taken, the automatic switching and the sequential playing of the monitoring videos shot by different video monitoring points are realized, the motion track of the target terminal is tracked or restored through the monitoring videos, the processes of manual retrieval and the like are avoided, the manual workload is reduced, and the tracking efficiency is improved; and the space coordinate system used for positioning tracking and video monitoring is a coordinate system in the target area, so that the small-range high-precision positioning such as base station positioning, indoor positioning and the like can be carried out based on the space coordinate system, and compared with the positioning carried out by using a common satellite positioning system, the method has higher positioning precision, stronger stability and better confidentiality.
Drawings
FIG. 1 is a schematic diagram of a system to which the regional security monitoring method of the embodiments can be applied;
FIG. 2 is a flow chart of a method for monitoring regional security in an embodiment;
FIG. 3 is a schematic diagram of a spatial coordinate system in an embodiment;
FIG. 4 is a schematic diagram illustrating a principle of measuring a first coordinate in the embodiment;
fig. 5 is a schematic diagram of determining a movement trajectory of a target terminal in the embodiment.
Detailed Description
In this embodiment, a method for monitoring regional security is provided, which may be executed by the system shown in fig. 1. Referring to fig. 1, a target area is indicated in a dashed box, and the target area may be an industrial park, a school, a hospital, a stadium, a scenic spot, or the like. A plurality of base stations and a plurality of video monitoring points are installed in a target area, and the base stations and the video monitoring points can be connected with a server through data lines such as optical fibers or wireless communication protocols such as 4G, 5G and WiFi so as to receive control instructions and data sent by the server and send the received data to the server.
In this embodiment, the target terminal may be a general-purpose terminal such as a mobile phone or a tablet pc that communicates with the base station, or may be a dedicated terminal that can communicate with the base station and that is designed to have a shape such as a tag. The target terminal can be carried by a person needing to be positioned and tracked, or the target terminal is installed or attached to an object such as equipment, goods and the like needing to be positioned and tracked. Specifically, the person to be tracked by location may be a visitor of an industrial park or school, a patient of a hospital, a rescuer of a scenic spot, or the like, and the device to be tracked by location may be an object of significant value within the target area.
In this embodiment, referring to fig. 2, the regional safety monitoring method includes the following steps:
s1, establishing a space coordinate system of a target area;
s2, measuring a first coordinate through communication between at least one base station and a target terminal; the first coordinate is a coordinate of the target terminal in a space coordinate system;
s3, monitoring the change of the first coordinate, and determining the moving track of the target terminal;
s4, establishing mapping from the moving track to the monitoring video; the monitoring video is a video shot by a video monitoring point.
Steps S1-S4 may be performed by a device having data processing capabilities, such as a server or a core network of a communication network.
In step S1, the established spatial coordinate system is used to describe the positions of the points in the target area. Particularly when executed by the server, the coordinates of each point in the target area in the spatial coordinate system may be represented by a data structure such as an array or a data table.
In this embodiment, when performing step S1, that is, the step of establishing the spatial coordinate system of the target area, the following steps may be specifically performed:
S101A, carrying out global positioning on each base station, determining the position of each base station, and recording the time of successful positioning of each base station;
S102A, determining a first base station according to the time of successful positioning of each base station; the first base station is a base station which is successfully positioned at the latest in all the base stations;
S103A, determining a geometric center according to the position of each base station;
S104A, taking a connecting line of a projection point of the first base station on the ground and a projection point of the geometric center on the ground as a first coordinate axis;
S105A, taking a geometric center as a projection point on the ground as an origin;
S106A, establishing a second coordinate axis which is perpendicular to the first coordinate axis and parallel to the ground through an origin;
S107A, establishing a third coordinate axis perpendicular to the first coordinate axis and the second coordinate axis through an origin;
S108A, establishing a rectangular coordinate system according to the first coordinate axis, the second coordinate axis and the third coordinate axis.
Steps S101A-S108A are a first way of implementing step S1.
In step S101A, the position of each base station may be determined by a satellite positioning device such as a GPS or a beidou system installed in each base station. Since the installation position and the surrounding environment of each base station in the target area are generally different, the signal strength and the positioning accuracy of the satellite positioning device are different, so that under the same accuracy requirement, the time spent by different base stations from the start of positioning to the success of positioning is also different, so that the base station which is successfully positioned earlier has better positioning conditions, such as stronger signal strength, coverage by more satellites, and the like, and conversely, the base station which is successfully positioned later has worse positioning conditions. In step S101A, the server records the successful positioning time of each base station, and arranges the base stations according to the sequence of the successful positioning time from late to early.
In step S102A, the base station with the first position is determined as the first base station after the base stations with the latest successful positioning, that is, the base stations are arranged according to the sequence of the successful positioning time from late to early. According to the principle of step S101A, the first base station is the base station with the worst positioning condition among all base stations.
In step S103A, the geometric center of the position of each base station is calculated using the position information of each base station obtained by the satellite positioning in step S101A.
In step S104A, a projection point of the first base station on the ground and a projection point of the geometric center on the ground are made. If the first base station is arranged on the ground, the projection point of the first base station on the ground is the position of the first base station, and similarly, if all the base stations are arranged on the ground, the geometric center of the position of each base station is also on the ground, and the projection point of the geometric center on the ground is the position of the geometric center. In the case where there is no relatively tall building in the target area, the height difference between the installation positions of the base stations can be ignored, and all the base stations can be regarded as being installed on the ground.
In step S104A, a connection line is formed between the position of the first base station and the position of the geometric center, and the obtained connection line is used as a first coordinate axis (X axis) of the spatial coordinate system.
In step S105A, the position of the geometric center is used as the origin of the spatial coordinate system.
In step S106A, a straight line perpendicular to the first coordinate axis (X axis) and parallel to the ground is drawn through the origin, and the obtained straight line is used as the second coordinate axis (Y axis) of the spatial coordinate system.
In step S107A, a straight line perpendicular to the first coordinate axis (X axis) and the second coordinate axis (Y axis) is drawn through the origin, and the resulting straight line is used as the third coordinate axis (Z axis) of the spatial coordinate system.
By performing steps S101A-S107A, a first coordinate axis (X-axis), a second coordinate axis (Y-axis), and a third coordinate axis (Z-axis) of the spatial coordinate system have been obtained. In step S108A, the length unit such as "meter" may be used as the unit length of each coordinate axis in the spatial coordinate system, and the established spatial coordinate system is a rectangular coordinate system.
In executing steps S101A to S108A, in the case of ignoring the height difference of the installation positions of the respective base stations, the third coordinate axis (Z axis) may be unnecessary, that is, only a planar rectangular coordinate system composed of the first coordinate axis (X axis) and the second coordinate axis (Y axis) is established as the spatial coordinate system.
By executing steps S101A-S108A, a spatial coordinate system describing positions of each point in the target area can be established, and an origin of the spatial coordinate system is a geometric center of a position of each base station, so that coordinates of positions near each base station have numerical values of appropriate size, and inconvenience caused by large or small coordinates of part of positions to data processing is avoided; the first coordinate axis (X axis) and the second coordinate axis (Y axis) of the space coordinate system are parallel to the ground, and the third coordinate axis (Z axis) is perpendicular to the ground, so that the coordinates of each point have an intuitively easily understood meaning, for example, the coordinates on the third coordinate axis of a point represent the height of the point from the ground; one coordinate axis of the space coordinate system, namely the first coordinate axis (X axis), passes through the position of the first base station, namely the base station with the worst positioning condition is located on one coordinate axis of the space coordinate system, so that the coordinate of the first base station can be represented only by using a small amount of data (for example, the first base station is located on the X axis, the Y axis and the Z axis of the first base station are both 0, and the position is described only by the value of the X axis coordinate), thereby avoiding the position error of the first base station in the Y axis and Z axis directions, and the position error of other base stations in each coordinate axis can be compensated by using a better positioning condition, thereby reducing the transmission of the satellite positioning error of each base station to the space coordinate system, each base station can generally obtain a low-error coordinate in the established space coordinate system, and improving the reliability of the space coordinate as the positioning reference.
In this embodiment, when the step S1, that is, the step of establishing the spatial coordinate system of the target area, is executed, the following steps may be specifically executed:
S101B, carrying out global positioning on each base station, determining the position of each base station, and recording the time of successful positioning of each base station;
S102B, determining a first base station and a second base station according to the time of successful positioning of each base station; the first base station is a base station which is successfully positioned at the latest in all the base stations, and the second base station is a base station which is successfully positioned at the latest except the first base station;
S103B, using a connecting line of a projection point of the first base station on the ground and a projection point of the second base station on the ground as a first coordinate axis;
S104B, determining a geometric center according to the position of each base station;
S105B, taking a point on the first coordinate axis closest to a projection point of the geometric center on the ground as an origin;
S106B, establishing a second coordinate axis which is perpendicular to the first coordinate axis and parallel to the ground through the origin;
S107B, establishing a third coordinate axis perpendicular to the first coordinate axis and the second coordinate axis through an origin;
S108B, establishing a rectangular coordinate system according to the first coordinate axis, the second coordinate axis and the third coordinate axis.
The principle of step S101B is the same as step S101A. In step S102B, similar to step S102A, the base stations may be arranged in order from the later to the earlier of the positioning success time, and the base station with the first position may be determined as the first base station, and on this basis, the base station with the second position may be determined as the second base station. According to the principle of step S101A, the first base station and the second base station are two base stations having the worst positioning conditions among all base stations.
The principle of step S103B is similar to that of step S104A, except that step S103B is a line connecting the positions of the first base station and the second base station as a first coordinate axis (X axis).
The principle of step S104B is the same as step S103A. In step S105B, since the first coordinate axis (X axis) is a connecting line of the positions of the first base station and the second base station, and the geometric center is not necessarily located on the first coordinate axis (X axis), a point on the first coordinate axis (X axis) closest to the geometric center may be used as an origin, and specifically, a foot hanging from the geometric center on the first coordinate axis (X axis) may be used as an origin of the spatial coordinate system.
The principle of steps S106B-S108B is the same as steps S106A-S108A.
By executing the steps S101B-S108B, a spatial coordinate system describing the positions of the respective points in the target area can be established, and the origin of the spatial coordinate system is close to the geometric center of the position of the respective base station, so that the coordinates of the positions near the respective base stations have numerical values with appropriate sizes, and inconvenience caused by partial large or small coordinates of the positions in data processing is avoided; the first coordinate axis (X axis) and the second coordinate axis (Y axis) of the space coordinate system are parallel to the ground, and the third coordinate axis (Z axis) is perpendicular to the ground, so that the coordinates of each point have an intuitively easily understood meaning, for example, the coordinates on the third coordinate axis of a point represent the height of the point from the ground; one coordinate axis of the space coordinate system, namely a first coordinate axis (X axis), passes through the positions of the first base station and the second base station, namely, two base stations with the worst positioning conditions are both positioned on one coordinate axis of the space coordinate system, so that the coordinates of the first base station and the second base station can be represented only by using a small amount of data (for example, the first base station and the second base station are positioned on the X axis, the Y axis coordinates and the Z axis coordinates of the first base station and the second base station are both 0, and the positions are described only by the numerical values of the X axis coordinates), thereby avoiding the position errors of the first base station and the second base station in the Y axis direction and the Z axis direction, and the position errors of other base stations in each coordinate axis can be compensated by using better positioning conditions, thereby reducing the transmission of the satellite positioning errors of each base station to the space coordinate system, each base station can generally obtain low-error coordinates in the established space coordinate system, and improving the reliability of the space coordinate as the positioning reference.
In this embodiment, the spatial coordinate system established by executing step S1 is a coordinate system inside the target area, and small-range high-precision positioning such as base station positioning and indoor positioning can be performed based on the spatial coordinate system, which has higher positioning precision, stronger stability and better confidentiality compared with positioning using a common satellite positioning system.
After step S1 is performed, the resulting spatial coordinate system is shown in fig. 3.
In this embodiment, when the step S2, that is, the step of measuring the first coordinate through the communication between the at least one base station and the target terminal, is executed, the following steps may be specifically executed:
s201, determining the distance between a target terminal and at least one base station through the communication between the at least one base station and the target terminal;
s202, determining a curve of a target terminal according to the distance between the target terminal and a base station;
s203, determining a first coordinate according to the intersection point of the curve where the target terminal is located.
In step S201, referring to fig. 4, the distance between the base station and the target terminal may be measured through wireless ranging. In step S202, according to the mathematical principle, in the case that the coordinates of a base station in the space coordinate system and the distance between the base station and the target terminal are known, it can be known that the target terminal is on a circle, and the equation of the circle in the space coordinate system can be determined. Therefore, in step S201, the distances between the target terminal and the three base stations can be determined, so as to obtain the equation of a circle in the three spatial coordinate systems, and in step S203, the coordinates of the target terminal, i.e., the first coordinates, can be determined by combining the equations of the three circles.
In this embodiment, by performing step S2 at different time points, the first coordinates can be measured at different time points, respectively, to form a first coordinate time series, and each first coordinate in the first coordinate time series is sorted according to the measurement time. In step S3, the first coordinate time series may be used as a result of monitoring a change in the first coordinate. The first coordinate time series can be imaged by performing point tracing in a space coordinate system according to the first coordinate time series, and a corresponding moving track is obtained. Referring to fig. 5, the first coordinates of the first coordinate time series, which have measured times of time point 1, time point 2, and time point 3 \8230, etc., are plotted in the space coordinate system at corresponding points, and the plotted discrete points are curve-fitted to obtain the movement trajectory indicated by the dotted line.
In this embodiment, when step S4 is executed, that is, the step of establishing the mapping from the movement track to the monitoring video is executed, the following steps may be specifically executed:
s401, determining a first coordinate time sequence according to the moving track; the first coordinate time sequence comprises a plurality of first coordinates which are sequenced according to the determination time;
s402, for any first coordinate in a first coordinate time sequence, calling a monitoring video shot by a video monitoring point closest to the first coordinate, and marking playing time corresponding to the called monitoring video on a playing time axis according to the time sequence of the first coordinate in the first coordinate time sequence;
and S403, playing the monitoring videos corresponding to the playing time on the playing time axis according to the time sequence determined by the playing time axis.
In step S401, the first coordinate time series obtained by performing step S2 may be called.
In step S402, a play time axis may be established, and the time points on the play time axis are arranged according to the sequence of time point 1, time point 2, and time point 3 \8230; calling a monitoring video shot by a video monitoring point with the position of the time point 1 in the picture 5 and the nearest distance, adding the monitoring video to the time point 1 on the playing time axis, calling a monitoring video shot by a video monitoring point with the position of the time point 2 in the picture 5 and the nearest distance, adding the monitoring video to the time point 2 on the playing time axis, calling a monitoring video shot by a video monitoring point with the position of the time point 3 in the picture 5 and the nearest distance, and adding the monitoring video to the time point 3 on the playing time axis, 8230, 8230
In step S403, playback can be performed according to the playback time axis. Specifically, firstly, the monitoring video shot by the video monitoring point with the closest distance from the position of the time point 1 in fig. 5 is called and played, then the monitoring video shot by the video monitoring point with the closest distance from the position of the time point 2 in fig. 5 is called and played, and then the monitoring video shot by the video monitoring point with the closest distance from the position of the time point 3 in fig. 5 is called and played \8230and8230
By executing the steps S401-S403, the positioning tracking of the target terminal and the linkage of the video monitoring of the target terminal can be realized, when the video monitoring of the target terminal is needed, the monitoring videos shot by a plurality of video monitoring points in the target area do not need to be analyzed and processed through manual work or image analysis, the monitoring videos shot by the video monitoring points near the motion track of the target terminal can be directly called, the automatic switching and the sequential playing of the monitoring videos shot by different video monitoring points are realized, the motion track of the target terminal is tracked or restored through the monitoring videos, the processes of manual retrieval and the like are avoided, and the manual workload is reduced.
In this embodiment, the method for monitoring regional security further includes the following steps:
s5, determining a coordinate range of the safety region in a space coordinate system;
s6, when the moving track is detected to enter the coordinate range, triggering a safety alarm;
and S7, when the moving track is detected to enter the coordinate range, calling a monitoring video shot by a video monitoring point closest to the tail end of the moving track.
In this embodiment, steps S5-S7 may be performed on the basis of steps S1-S4.
In step S5, one or more areas may be set as the safety area in the target area, such as the safety area 1 in fig. 3 and the safety area 1 and the safety area 2 in fig. 5. In particular, the secure area may be an area of particular value such as a warehouse or a secure room. After the setting of the safety region, the coordinate range of the safety region in the spatial coordinate system may be set in the server, and specifically, the coordinate range corresponding to the safety region may be determined by coordinates corresponding to six planes respectively parallel to the X-axis, the Y-axis, and the Z-axis of the spatial coordinate system.
In step S5, it may be default that the person or object carrying the target terminal does not have the right to enter the security area.
In step S6, referring to fig. 5, it may be determined in real time whether the coordinate of the end of the moving trajectory is within the coordinate range, and when the coordinate of the end of the moving trajectory is within the coordinate range, indicating that the target terminal enters the security area, the server may send the security alarm information. Specifically, when sending the security alarm information, the server may display a prompt message to the administrator through the display screen, and may also send a message prompting departure to the target terminal.
In step S7, when it is detected that the movement trajectory enters the coordinate range, the server may retrieve a surveillance video captured by a video surveillance point closest to the end of the movement trajectory, so as to monitor the situation that a person or an object carrying the target terminal is in or near a security area, thereby ensuring the security of the security area as much as possible.
The regional security monitoring method in the present embodiment may be implemented by writing a computer program for implementing the regional security monitoring method in the present embodiment, writing the computer program into a computer device or a storage medium, and executing the regional security monitoring method in the present embodiment when the computer program is read out and run, thereby achieving the same technical effects as the regional security monitoring method in the embodiment. Such a computer device or a storage medium may be installed on the space base station, or may be installed in a location such as a ground-based core network, and by operating such a computer device or a storage medium, a control command is sent to the space base station on the low-earth satellite, so as to control the space base station on the low-earth satellite to execute each step in the regional security monitoring method in this embodiment.
It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it may be directly fixed or connected to the other feature or indirectly fixed or connected to the other feature. Furthermore, the descriptions of upper, lower, left, right, etc. used in the present disclosure are only relative to the mutual positional relationship of the constituent parts of the present disclosure in the drawings. As used in this disclosure, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. In addition, unless defined otherwise, all technical and scientific terms used in this example have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in the description of the embodiments herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this embodiment, the term "and/or" includes any combination of one or more of the associated listed items.
It will be understood that, although the terms first, second, third, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element of the same type from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of the present disclosure. The use of any and all examples, or exemplary language ("e.g.," such as "etc.), provided with the present embodiment is intended merely to better illuminate embodiments of the invention and does not pose a limitation on the scope of the invention unless otherwise claimed.
It should be recognized that embodiments of the present invention can be realized and implemented by computer hardware, a combination of hardware and software, or by computer instructions stored in a non-transitory computer readable memory. The methods may be implemented in a computer program using standard programming techniques, including a non-transitory computer-readable storage medium configured with the computer program, where the storage medium so configured causes a computer to operate in a specific and predefined manner, according to the methods and figures described in the detailed description. Each program may be implemented in a high level procedural or object oriented programming language to communicate with a computer system. However, the program(s) can be implemented in assembly or machine language, if desired. In any case, the language may be a compiled or interpreted language. Furthermore, the program can be run on a programmed application specific integrated circuit for this purpose.
Further, the operations of the processes described in this embodiment can be performed in any suitable order unless otherwise indicated herein or otherwise clearly contradicted by context. The processes described in this embodiment (or variations and/or combinations thereof) may be performed under the control of one or more computer systems configured with executable instructions, and may be implemented as code (e.g., executable instructions, one or more computer programs, or one or more applications) collectively executed on one or more processors, by hardware, or combinations thereof. The computer program includes a plurality of instructions executable by one or more processors.
Further, the method may be implemented in any type of computing platform operatively connected to a suitable interface, including but not limited to a personal computer, mini computer, mainframe, workstation, networked or distributed computing environment, separate or integrated computer platform, or in communication with a charged particle tool or other imaging device, and the like. Aspects of the invention may be embodied in machine-readable code stored on a non-transitory storage medium or device, whether removable or integrated into a computing platform, such as a hard disk, optically read and/or write storage medium, RAM, ROM, or the like, such that it may be read by a programmable computer, which when read by the storage medium or device, is operative to configure and operate the computer to perform the procedures described herein. Further, the machine-readable code, or portions thereof, may be transmitted over a wired or wireless network. The invention described in this embodiment includes these and other different types of non-transitory computer-readable storage media when such media includes instructions or programs that implement the steps described above in conjunction with a microprocessor or other data processor. The invention also includes the computer itself when programmed according to the methods and techniques described herein.
A computer program can be applied to input data to perform the functions described in the present embodiment to convert the input data to generate output data that is stored to a non-volatile memory. The output information may also be applied to one or more output devices, such as a display. In a preferred embodiment of the invention, the transformed data represents physical and tangible objects, including particular visual depictions of physical and tangible objects produced on a display.
The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above embodiment, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention as long as the technical effects of the present invention are achieved by the same means. The invention is capable of other modifications and variations in its technical solution and/or its implementation, within the scope of protection of the invention.
Claims (9)
1. A regional security monitoring method is characterized by comprising the following steps:
establishing a space coordinate system of a target area; a plurality of base stations and a plurality of video monitoring points are arranged in the target area;
determining a first coordinate through communication between at least one of the base stations and a target terminal; the first coordinate is a coordinate of the target terminal in the space coordinate system;
monitoring the change of the first coordinate, and determining the movement track of the target terminal;
establishing a mapping from the movement track to a surveillance video; the monitoring video is a video shot by the video monitoring point;
the establishing of the mapping from the movement track to the monitoring video comprises the following steps:
determining a first coordinate time sequence according to the moving track; the first coordinate time sequence comprises a plurality of first coordinates which are sequenced according to the determination time;
and for any one first coordinate in the first coordinate time sequence, calling a monitoring video shot by a video monitoring point closest to the first coordinate, and marking the playing time corresponding to the called monitoring video on a playing time axis according to the time sequence of the first coordinate in the first coordinate time sequence.
2. The regional security monitoring method of claim 1, further comprising: determining a coordinate range of a safety region in the space coordinate system; the safety area is an area in the target area;
and triggering a safety alarm when the movement track is detected to enter the coordinate range.
3. The regional security monitoring method of claim 2, further comprising:
and when the mobile track is detected to enter the coordinate range, calling the monitoring video shot by the video monitoring point closest to the tail end of the mobile track.
4. The method of claim 1, wherein the determining the first coordinate via communication between at least one of the base stations and the target terminal comprises:
determining a distance between a target terminal and at least one base station through communication between the at least one base station and the target terminal;
determining a curve where the target terminal is located according to the distance between the target terminal and the base station;
and determining the first coordinate according to the intersection point of the curves where the target terminal is located.
5. The regional security monitoring method of claim 1, wherein the establishing a mapping from the movement trajectory to a monitoring video further comprises:
and playing the monitoring videos corresponding to the playing times on the playing time axis according to the time sequence determined by the playing time axis.
6. The regional security monitoring method of any one of claims 1 to 5, wherein the establishing a spatial coordinate system of the target region comprises:
carrying out global positioning on each base station, determining the position of each base station, and recording the successful positioning time of each base station;
determining a first base station when the positioning of each base station is successful; the first base station is a base station successfully positioned at the latest in all base stations;
determining a geometric center according to the position of each base station;
a connecting line of a projection point of the first base station on the ground and a projection point of the geometric center on the ground is taken as a first coordinate axis;
taking the geometric center as a projection point on the ground as an origin;
establishing a second coordinate axis which is perpendicular to the first coordinate axis and parallel to the ground through the origin;
establishing a third coordinate axis perpendicular to the first coordinate axis and the second coordinate axis through the origin;
and establishing a rectangular coordinate system according to the first coordinate axis, the second coordinate axis and the third coordinate axis.
7. The regional safety monitoring method according to any one of claims 1 to 5, wherein the establishing of the spatial coordinate system of the target region comprises:
carrying out global positioning on each base station, determining the position of each base station, and recording the successful positioning time of each base station;
determining a first base station and a second base station when the base stations are successfully positioned; the first base station is a base station which is successfully positioned at the latest in all base stations, and the second base station is a base station which is successfully positioned at the latest except the first base station;
a connecting line of the projection point of the first base station on the ground and the projection point of the second base station on the ground is taken as a first coordinate axis;
determining a geometric center according to the position of each base station;
taking a point on the first coordinate axis closest to a projection point of the geometric center on the ground as an origin;
establishing a second coordinate axis which is perpendicular to the first coordinate axis and parallel to the ground through the origin;
establishing a third coordinate axis perpendicular to the first coordinate axis and the second coordinate axis through the origin;
and establishing a rectangular coordinate system according to the first coordinate axis, the second coordinate axis and the third coordinate axis.
8. A computer apparatus comprising a memory for storing at least one program and a processor for loading the at least one program to perform the regional security monitoring method of any of claims 1-7.
9. A computer-readable storage medium in which a program executable by a processor is stored, wherein the program executable by the processor is configured to perform the regional security monitoring method of any one of claims 1 to 7 when executed by the processor.
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