A network-based monitoring and security system for supervision

Abstract

The present invention relates to the field of intelligent monitoring technology, and in particular to a network-based monitoring and security system for supervision, the system comprising: a plurality of laser fences for detecting the passing height and passing time of a user passing through the laser fences in a supervision area; a plurality of electromagnetic sensors for detecting the carrying situation of a user close to the electromagnetic sensors in the supervision area; a plurality of video monitors for collecting video information of the supervision area; a central controller for determining the passing situation of the user, the security level of the user, and the passing route and disappearance route of the user; a door controller for closing a front partition door and a rear partition door; an alarm for sending an alarm signal; the system of the present invention utilizes the method of setting the above-mentioned devices to accurately judge whether the action posture of the target is normal, and comprehensively judge whether the moving process of the target is normal, thereby improving the accuracy of the monitoring and security system detection, and effectively improving the safety and practicality of the monitoring and security system.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent monitoring production, and in particular to a monitoring and security system for supervision based on a network. Background Art

[0002] Monitoring and security systems for supervision are mainly used to ensure the safety of public and private places. Through video surveillance, intrusion alarms, perimeter protection and other means, real-time monitoring and management of specific areas can be achieved. These systems usually include the following main components: video surveillance cameras, recording equipment, alarm systems, monitoring software, security personnel, and networks and communications. These systems have been widely used in many fields such as commerce, industry, transportation, and public safety. At the same time, faster data transmission and interaction with the network can help reduce crime rates, improve response speed and reduce losses. Monitoring and security systems used in high-risk places such as prisons need to make faster alarm responses and have good supervision methods for blind spots of monitoring cameras.

[0003] Chinese patent application publication number: CN109348178A discloses a prison intelligent monitoring method and system, which detects illegal targets through thermal imaging cameras. Due to the characteristics of thermal imaging, the false alarm rate can be effectively reduced; then the location information of illegal targets detected by the thermal imaging camera is converted into the location information of the laser night vision device, and the target area is located through the laser night vision device for detailed observation and evidence collection, and the location of the illegal intrusion target is sent to the three-dimensional electronic map system, so that the illegal intrusion target is marked and displayed on the three-dimensional map, which is convenient for the on-duty police to understand the incident area in time and facilitate disposal. The invention can detect abnormal conditions in the monitoring area in time and effectively reduce the manual workload.

[0004] China Patent Authorization Announcement No.: CN210402618U discloses a perimeter intrusion alarm system based on laser radar, including: laser radar detector, camera, DC power supply and controller mainboard; the laser radar detector, camera, DC power supply are connected to the controller mainboard; the DC power supply supplies power to the controller mainboard. This invention provides a laser radar alarm system for visualization and dynamic monitoring of target objects, with faster and more timely alarm response speed, which can be applied to the field of alarm linkage between armed police and public security officers in detention centers and prisons.

[0005] However, the above method has the following problems: thermal imaging cameras are prone to misjudgment of targets, and are unable to effectively monitor blind spots, and are unable to block areas in a targeted manner in the event of an emergency. Summary of the invention

[0006] To this end, the present invention provides a network-based monitoring security system for supervision, which is used to overcome the problems in the prior art that thermal imaging cameras are prone to misjudgment of targets, cannot effectively monitor blind spots in monitoring, and cannot specifically block areas in the event of an emergency.

[0007] To achieve the above object, the present invention provides a network-based monitoring and security system, comprising:

[0008] A plurality of laser fences, which are used to detect the passing height and passing time of users passing through the laser fences in the supervision area;

[0009] A plurality of electromagnetic sensors, which are used to detect the carrying situation of a user close to the electromagnetic sensors in the supervision area;

[0010] A plurality of video surveillance cameras, which are used to collect video information of the supervision area;

[0011] A central controller, which is connected to the laser fence, the electromagnetic sensor and the camera monitor respectively, and is used to obtain the pass height, the pass time, the carrying condition and the camera information through the network. The central controller is also used to determine the user's pass route and disappearance route by analyzing the camera information according to the pass situation and / or the safety level; wherein the pass situation is determined according to the pass height and the pass time, and the safety level is determined according to the carrying condition;

[0012] A door controller connected to the central controller, used to close the front partition door on the passage route according to the passage route, and to close the rear partition door on the disappearing route according to the disappearing route;

[0013] An alarm device connected to the central controller for sending an alarm signal according to the traffic conditions or the safety level;

[0014] Among them, the carrying situation includes carrying metal products and not carrying metal products; the safety level includes danger level and safety level; the front partition door is a partition door along the direction of travel of the passage route; the rear partition door is a partition door in the opposite direction of travel of the disappearing route; the passage situation includes abnormal passage and normal passage; the passage route is the route between the laser fence that triggers the central controller to determine that the user is the abnormal passage and / or the danger level to the first partition door in the user's travel direction; the disappearing route is the route between the position where the user is lost in the camera information to the laser fence that triggers the central controller to determine that the user is the abnormal passage and / or the danger level.

[0015] Furthermore, the laser fence comprises:

[0016] A plurality of first laser emitting devices and a plurality of first laser receiving devices, which are correspondingly arranged at positions in the first height area, for detecting whether the height of the user passing through the laser fence reaches the first height area;

[0017] A plurality of second laser emitting devices and a plurality of second laser receiving devices, which are correspondingly arranged at the second height area position, for detecting whether the height of the user passing through the laser fence reaches the second height area;

[0018] a time unit, which is connected to the first laser receiving device and the second laser receiving device respectively, and is used to detect the time when the user passes by the first laser receiving device and the second laser receiving device respectively;

[0019] Wherein, the first height region is higher than the second height region.

[0020] Further, in a state where any of the first laser receiving devices does not receive laser light, it is determined that the passing height reaches the first height area;

[0021] In a state where any of the second laser receiving devices does not receive laser light, determining that the passage height reaches the second height area;

[0022] When determining that the passing height reaches the first height area, the time unit compares a number of times when the first laser receiving devices do not receive laser light, and selects a first passing time;

[0023] The time unit compares the times when the second laser receiving devices do not receive laser light and selects the second passing time when it is determined that the passing height reaches the second height area but does not reach the first height area;

[0024] Among them, the passing height includes the first height area and the second height area; the first passing time is the longest time among several times when the first laser receiving devices do not receive the laser; the second passing time is the longest time among several times when the second laser receiving devices do not receive the laser.

[0025] Furthermore, the central controller compares the first passage time with a first preset time, and determines the passage condition according to the comparison result, wherein:

[0026] If the first passing time is less than the first preset time, determining that the passing condition is abnormal passing;

[0027] If the first passage time is not less than the first preset time, determining that the passage condition is normal passage;

[0028] The traffic conditions include the normal traffic and the abnormal traffic; and the first preset time is negatively correlated with the user's travel speed.

[0029] Furthermore, the central controller compares the second passage time with a second preset time, and determines the passage condition according to the comparison result, wherein:

[0030] If the second passing time is less than the second preset time, determining that the passing condition is the abnormal passing;

[0031] If the second passage time is not less than the second preset time, determining that the passage condition is the normal passage;

[0032] The second preset time is negatively correlated with the user's traveling speed.

[0033] Furthermore, the central controller determines that the safety level is the dangerous level when the electromagnetic sensor determines that the user is carrying metal products;

[0034] The central controller determines that the safety level is the safety level when the electromagnetic sensor determines that the user is not carrying any metal products.

[0035] Furthermore, when the central controller determines that the traffic condition is the abnormal traffic condition, it analyzes the camera information and determines the traffic route;

[0036] The access control device closes the front partition door on the passage route.

[0037] Furthermore, the central controller analyzes the camera information and determines the disappearing route when determining that the security level of the user is the dangerous level;

[0038] The access control device closes the rear partition door on the disappearing route.

[0039] Furthermore, when the central controller determines that the security level of the user is the dangerous level, if the user is missing from the video information, the central controller analyzes the video information within a third preset time before the user is lost to determine the disappearance route;

[0040] Among them, the third preset time is the time required for the user to pass through the laser fence that triggers the central controller to determine that the user is the abnormal passage and / or the dangerous level to the position where he is lost in the camera information and is negatively correlated with the user's travel speed.

[0041] Furthermore, the central controller analyzes the camera information and determines the passing route and the disappearing route when determining that the passing condition of the user is the abnormal passing and the safety level of the user is the dangerous level;

[0042] The access control device closes the front partition door and the rear partition door.

[0043] Compared with the prior art, the beneficial effect of the present invention lies in that the system of the present invention sets up several laser fences in the supervision area, detects the height of the target passing through the laser fence, accurately judges whether the target's movement posture is normal, and combines the analysis of the time when the target passes through the laser fence to comprehensively judge whether the target's movement process is normal, thereby improving the accuracy of the monitoring and security system detection and effectively improving the safety and practicality of the monitoring and security system.

[0044] Furthermore, the system of the present invention can accurately detect whether a target is carrying dangerous metal products by setting up electromagnetic sensors. In blind spots that cannot be captured by video surveillance cameras, the system can detect whether a target is carrying dangerous metal products and promptly issue an alarm, thereby further improving the safety and practicality of the monitoring and security system while increasing the monitoring range of the monitoring and security system.

[0045] Furthermore, the present invention analyzes video information and collects the target's route and position information when and before the alarm is issued, thereby predicting the target's route. At the same time, for a target that disappears in a camera blind spot, the target's last position and the route it traveled a period of time before disappearance are analyzed to obtain the target's disappearance route. This improves the efficiency of monitoring targets and further enhances the safety and practicality of the monitoring security system.

[0046] Furthermore, the present invention designs an access control device to promptly close the partition door in front of the target passage route, and promptly close the partition door behind the disappearing route, so as to promptly control the targets with abnormal passage, further improving the safety and practicality of the monitoring security system. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 It is a structural schematic diagram of a network-based monitoring and security system for supervision of the present invention;

[0048] Figure 2 This is a structural diagram of a laser fence according to an embodiment of the present invention;

[0049] Figure 3 A determination diagram of a first passing time corresponding to a passing condition in an embodiment of the present invention;

[0050] Figure 4 A determination diagram of a traffic condition corresponding to the second traffic time according to an embodiment of the present invention;

[0051] Figure 5 A diagram for determining the security level of an embodiment of the present invention;

[0052] Among them, 1, laser fence; 2, first laser emitting device; 3, first laser receiving device; 4, second laser emitting device; 5, second laser receiving device; 6, first height area; 7, second height area. DETAILED DESCRIPTION

[0053] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0054] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0055] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0056] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0057] See also Figure 1 As shown, it is a structural diagram of a network-based monitoring and security system for supervision of the present invention, a network-based monitoring and security system for supervision, including:

[0058] A number of laser fences, which are used to detect the passing height and passing time of users passing through the laser fences in the supervision area;

[0059] A plurality of electromagnetic sensors, which are used to detect the user's carrying close to the electromagnetic sensors in the supervision area;

[0060] Several video surveillance cameras, which are used to collect video information of the supervision area;

[0061] A central controller, which is connected to the laser fence, the electromagnetic sensor and the camera monitor respectively, and is used to obtain the pass height, pass time, carrying condition and camera information through the network. The central controller is also used to determine the user's pass route and disappearance route by analyzing the camera information according to the pass situation and / or safety level; wherein the pass situation is determined according to the pass height and pass time, and the safety level is determined according to the carrying condition;

[0062] An access control device, which is connected to the central controller, is used to close the front partition door on the passage route according to the passage route, and to close the rear partition door on the disappearing route according to the disappearing route;

[0063] An alarm, which is connected to the central controller and is used to send out an alarm signal according to traffic conditions or safety levels;

[0064] Among them, the carrying conditions include carrying metal products and not carrying metal products; the safety level includes dangerous level and safe level; the front partition door is the partition door along the direction of travel of the passage route; the rear partition door is the partition door in the opposite direction of travel of the disappearing route; the passage conditions include abnormal passage and normal passage; the passage route is the route between the laser fence that triggers the central controller to determine that the user is abnormal passage and / or dangerous level to the first partition door in the user's travel direction; the disappearing route is the route between the position where the user is lost in the camera information to the laser fence that triggers the central controller to determine that the user is abnormal passage and / or dangerous level.

[0065] See also Figure 2 As shown, it is a structural diagram of a laser fence according to an embodiment of the present invention, and the laser fence comprises:

[0066] A plurality of first laser emitting devices and a plurality of first laser receiving devices are correspondingly arranged at positions in the first height area, and are used to detect whether the height of the user passing through the laser fence reaches the first height area;

[0067] A plurality of second laser emitting devices and a plurality of second laser receiving devices are correspondingly arranged at the second height area position, and are used to detect whether the height of the user passing through the laser fence reaches the second height area;

[0068] A time unit, which is connected to the first laser receiving device and the second laser receiving device respectively, and is used to detect the time when the user passes by the first laser receiving device and the second laser receiving device respectively;

[0069] The first height region is higher than the second height region.

[0070] Example 1: Please continue to see Figure 2As shown, the first height area 6 is above the second height area 7; the first laser emitting device 2 and the first laser receiving device 3 are correspondingly arranged in the first height area 6 of the laser fence 1; the second laser emitting device 4 and the second laser receiving device 5 are correspondingly arranged in the second height area 7 of the laser fence 1.

[0071] Specifically, the system of the present invention sets up a number of laser fences in the supervision area, detects the height of the target passing through the laser fences, accurately determines whether the target's movement posture is normal, and combines the analysis of the time when the target passes through the laser fences to comprehensively determine whether the target's movement process is normal, thereby improving the accuracy of the monitoring and security system's detection and effectively improving the safety and practicality of the monitoring and security system.

[0072] Specifically, when any first laser receiving device does not receive the laser, it is determined that the passing height reaches the first height area;

[0073] In a state where any second laser receiving device does not receive the laser, determining that the passing height reaches the second height area;

[0074] The time unit compares the times when the first laser receiving devices do not receive the laser and selects the first passing time when determining that the passing height reaches the first height area;

[0075] The time unit compares the times when the second laser receiving devices do not receive the laser and selects the second passing time when it is determined that the passing height reaches the second height area but does not reach the first height area;

[0076] Among them, the passing height includes a first height area and a second height area; the first passing time is the longest time among several first laser receiving devices that do not receive lasers; the second passing time is the longest time among several second laser receiving devices that do not receive lasers.

[0077] It can be understood that when any first laser receiving device does not receive the laser, it is determined that the user's passing height reaches the first height area, and the time unit records the time when the laser is blocked, which is the time when the user passes. Due to the different side widths of the user and the different user movement speeds, the blocking time is different. The longest time among the recorded times is selected as the time when the user passes the first laser receiving device.

[0078] It can be understood that when any second laser receiving device does not receive the laser, but the first laser receiving device receives the laser, it is determined that the user's passing height reaches the second height area and does not reach the first height area. The time unit records the time when the laser is blocked, which is the time when the user passes. Due to the different side widths of the user and the different user movement speeds, the blocking time is different. The longest time among the recorded times is selected as the time when the user passes the second laser receiving device.

[0079] See also Figure 3 As shown, it is a judgment diagram of the first passing time corresponding to the passing condition in an embodiment of the present invention. The central controller compares the first passing time with the first preset time and judges the passing condition according to the comparison result, wherein:

[0080] If the first passing time is less than the first preset time, the passing condition is determined to be abnormal passing;

[0081] If the first passing time is not less than the first preset time, the passing condition is determined to be normal passing.

[0082] Embodiment 2: Based on Embodiment 1, this embodiment is different from the embodiment 1 in that the first preset time is 0.5 seconds. If the first passing time is 0.3 seconds, which is less than the first preset time 0.5 seconds, the passing condition is determined to be abnormal passing.

[0083] If the first passing time is 1 second and is greater than the first preset time of 0.5 seconds, the passing condition is determined to be normal passing;

[0084] The traffic conditions include normal traffic and abnormal traffic; the first preset time is negatively correlated with the user's travel speed.

[0085] It is understandable that the faster the user travels, the shorter the time it takes to pass through the laser fence.

[0086] Optionally, the user's travel speed is 1 meter per second, and the first preset time is 0.5 seconds;

[0087] The user's travel speed is 1.5 meters per second, and the first preset time is 0.3 seconds;

[0088] The user's travel speed is 2 meters per second, and the first preset time is 0.25 seconds.

[0089] See also Figure 4 As shown, it is a determination diagram of the second passing time corresponding to the passing condition in an embodiment of the present invention. The central controller compares the second passing time with the second preset time and determines the passing condition according to the comparison result, wherein:

[0090] If the second passing time is less than the second preset time, the passing condition is determined to be abnormal passing;

[0091] If the second passing time is not less than the second preset time, the passing condition is determined to be normal.

[0092] Embodiment 3: Based on Embodiment 2, this embodiment is different from the embodiment in that the second preset time is 0.8 seconds. If the second passage time is 0.5 seconds, which is less than the second preset time 0.8 seconds, the passage condition is determined to be abnormal passage.

[0093] If the second passing time is 1 second and is greater than the second preset time 0.8 seconds, the passing condition is determined to be normal passing;

[0094] The second preset time is negatively correlated with the user's traveling speed.

[0095] It can be understood that the first height area corresponds to the upper body of the user, and the second height area corresponds to the lower body of the user. When the laser is not blocked in the first height area and the laser is blocked in the second height area, the user can be seen to be moving in a bent or crawling posture. At this time, the width of the laser blocked by the user becomes larger and the time taken becomes longer.

[0096] Optionally, the user's travel speed is 1 meter per second, and the first preset time is 0.8 seconds;

[0097] The user's travel speed is 1.5 meters per second, and the first preset time is 0.5 seconds;

[0098] The user's travel speed is 2 meters per second, and the first preset time is 0.4 seconds.

[0099] See also Figure 5 As shown, it is a diagram for determining the safety level of an embodiment of the present invention. When the electromagnetic sensor determines that the user is carrying metal products, the central controller determines that the safety level is a dangerous level;

[0100] When the electromagnetic sensor determines that the user is not carrying any metal products, the central controller determines that the security level is safe.

[0101] Specifically, the system of the present invention can accurately detect whether a target is carrying dangerous metal products by setting up electromagnetic sensors. In blind spots where video surveillance cameras cannot capture, the system can detect whether a target is carrying dangerous metal products and issue an alarm in time. This can improve the safety and practicality of the monitoring and security system while increasing its monitoring range.

[0102] Specifically, when the central controller determines that the traffic condition is abnormal, it analyzes the camera information and determines the traffic route;

[0103] The access controller closes the front partition door on the passage route.

[0104] It is understandable that when the central controller determines that the user has passed abnormally, it analyzes the camera information and, based on the user's route, closes the partition door in front of the user's route through the access control device to block the user.

[0105] Specifically, the present invention analyzes camera information and collects the target's route and position information when the alarm is issued and before the alarm is issued, thereby realizing the prediction of the target's route. At the same time, for the target that disappears in the camera blind spot, the target's last position and the route before disappearance are analyzed to obtain the target's disappearance route, which improves the efficiency of monitoring targets and further enhances the safety and practicality of the monitoring security system.

[0106] Specifically, when the central controller determines that the user's safety level is dangerous, it analyzes the camera information and determines the disappearance route;

[0107] The access control device closes the rear partition door on the disappearing route.

[0108] It is understandable that when the central controller determines that the user's safety level is at a dangerous level, indicating that the user is carrying metal products, it analyzes the camera information, determines the user's disappearing route based on the user's travel route, and closes the rear partition door on the disappearing route through the access control device to prevent the user from returning, thereby blocking the user.

[0109] Specifically, the present invention designs an access control device to promptly close the partition door in front of the target passage route, and promptly close the partition door behind the disappearing route, so as to promptly control the targets with abnormal passage, further improving the safety and practicality of the monitoring security system.

[0110] Specifically, when the central controller determines that the security level of the user is at a dangerous level, if the user is missing from the video information, the central controller analyzes the video information within a third preset time before the user is lost to determine the disappearance route;

[0111] It is understandable that when the user is in the monitoring blind spot, the central controller determines that the user's safety level is at a dangerous level, indicating that the user is carrying metal products. It analyzes the camera information, determines the user's disappearance route based on the user's last location and the route he / she traveled some time before disappearing, and closes the rear partition door on the disappearance route through the access control device to block the user.

[0112] Among them, the third preset time is the time required for the user to pass through the laser fence that triggers the central controller to determine that the user is the abnormal passage and / or the dangerous level to the position where he is lost in the camera information, and is negatively correlated with the user's travel speed.

[0113] It is understandable that the faster the user travels, the shorter the time in the monitoring blind spot. Preferably, the third preset time is 1 minute, as long as the central controller can analyze the disappearance route of the user, which will not be repeated here.

[0114] Specifically, when the central controller determines that the user's passage is abnormal and the user's safety level is dangerous, it analyzes the camera information to determine the passage route and the disappearance route;

[0115] The access control device closes the front partition door and the rear partition door.

[0116] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

[0117] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A network-based monitoring and security system, characterized in that: include: A plurality of laser fences, which are used to detect the passing height and passing time of users passing through the laser fences in the supervision area; A plurality of electromagnetic sensors, which are used to detect the carrying situation of a user close to the electromagnetic sensors in the supervision area; A plurality of video surveillance cameras, which are used to collect video information of the supervision area; A central controller, which is connected to the laser fence, the electromagnetic sensor and the camera monitor respectively, and is used to obtain the pass height, the pass time, the carrying condition and the camera information through the network. The central controller is also used to determine the user's pass route and disappearance route by analyzing the camera information according to the pass situation and / or the safety level; wherein the pass situation is determined according to the pass height and the pass time, and the safety level is determined according to the carrying condition; A door controller connected to the central controller, used to close the front partition door on the passage route according to the passage route, and to close the rear partition door on the disappearing route according to the disappearing route; An alarm device connected to the central controller for sending an alarm signal according to the traffic conditions or the safety level; Among them, the carrying situation includes carrying metal products and not carrying metal products; the safety level includes danger level and safety level; the front partition door is the partition door along the direction of travel of the passage route; the rear partition door is the partition door in the opposite direction of travel of the disappearing route; the passage situation includes abnormal passage and normal passage; the passage route is the route between the laser fence that triggers the central controller to determine that the user is the abnormal passage or the electromagnetic sensor that triggers the central controller to determine that the user is the danger level to the first partition door in the user's travel direction; the disappearing route is the route between the position where the user is lost in the camera information to the laser fence that triggers the central controller to determine that the user is the abnormal passage or the electromagnetic sensor that triggers the central controller to determine that the user is the danger level.

2. The network-based monitoring and security system for supervision according to claim 1 is characterized in that: The laser fence comprises: A plurality of first laser emitting devices and a plurality of first laser receiving devices, which are correspondingly arranged at positions in the first height area, for detecting whether the height of the user passing through the laser fence reaches the first height area; A plurality of second laser emitting devices and a plurality of second laser receiving devices, which are correspondingly arranged at the second height area position, for detecting whether the height of the user passing through the laser fence reaches the second height area; a time unit, which is connected to the first laser receiving device and the second laser receiving device respectively, and is used to detect the time when the user passes by the first laser receiving device and the second laser receiving device respectively; Wherein, the first height region is higher than the second height region.

3. The network-based monitoring and security system for supervision according to claim 2 is characterized in that: In a state where any of the first laser receiving devices does not receive laser light, determining that the passing height reaches the first height area; In a state where any of the second laser receiving devices does not receive laser light, determining that the passage height reaches the second height area; When determining that the passing height reaches the first height area, the time unit compares a number of times when the first laser receiving devices do not receive laser light, and selects a first passing time; The time unit compares the times when the second laser receiving devices do not receive laser light and selects the second passing time when it is determined that the passing height reaches the second height area but does not reach the first height area; Among them, the passing height includes the first height area and the second height area; the first passing time is the longest time among several times when the first laser receiving devices do not receive the laser; the second passing time is the longest time among several times when the second laser receiving devices do not receive the laser.

4. The network-based monitoring and security system for supervision according to claim 3 is characterized in that: The central controller compares the first passing time with the first preset time, and determines the passing condition according to the comparison result, wherein: If the first passing time is less than the first preset time, determining that the passing condition is the abnormal passing; If the first passage time is not less than the first preset time, determining that the passage condition is the normal passage; The traffic conditions include the normal traffic and the abnormal traffic; and the first preset time is negatively correlated with the user's travel speed.

5. The network-based monitoring and security system for supervision according to claim 4 is characterized in that: The central controller compares the second passage time with a second preset time, and determines the passage condition according to the comparison result, wherein: If the second passing time is less than the second preset time, determining that the passing condition is the abnormal passing; If the second passage time is not less than the second preset time, determining that the passage condition is the normal passage; The second preset time is negatively correlated with the user's traveling speed.

6. The network-based monitoring and security system for supervision according to claim 5, characterized in that: The central controller determines that the safety level is the dangerous level when the electromagnetic sensor determines that the user is carrying metal products; The central controller determines that the safety level is the safety level when the electromagnetic sensor determines that the user is not carrying any metal products.

7. The network-based monitoring and security system for supervision according to claim 6, characterized in that: When the central controller determines that the traffic condition is the abnormal traffic condition, the central controller analyzes the camera information and determines the traffic route; The access control device closes the front partition door on the passage route.

8. The network-based monitoring and security system for supervision according to claim 7, characterized in that: The central controller analyzes the camera information and determines the disappearance route when determining that the security level of the user is the dangerous level; The access control device closes the rear partition door on the disappearing route.

9. The network-based monitoring and security system for supervision according to claim 8, characterized in that: When the central controller determines that the security level of the user is the dangerous level, if the user is missing from the video information, the central controller analyzes the video information within a third preset time before the user is lost to determine the disappearance route; Among them, the third preset time is the time required for the user to pass through the laser fence that triggers the central controller to determine that the user is abnormally passing or the electromagnetic sensor that triggers the central controller to determine that the user is at the danger level to the position where he is lost in the camera information, and is negatively correlated with the user's travel speed.

10. The network-based monitoring and security system for supervision according to claim 9, characterized in that: The central controller analyzes the video information and determines the passing route and the disappearing route when determining that the passing condition of the user is the abnormal passing and the safety level of the user is the dangerous level; The access control device closes the front partition door and the rear partition door.

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