Airport weak current intelligent monitoring system based on wireless communication

Abstract

The present invention relates to the field of intelligent monitoring technology, and in particular to an airport weak current intelligent monitoring system based on wireless communication, the system comprising an electromagnetic interference scanning module, an electromagnetic shielding monitoring module, an X-ray scanner module and a cloud analysis control module, the cloud analysis control module receives the working state of the electromagnetic shielding module and the scanned image of the object, determines the interference tendency type according to the electromagnetic field strength of the electromagnetic interference source, determines the interference adjustment measures according to the interference tendency type and the working state of the electromagnetic shielding module, determines whether to adjust the transmission speed and / or X-ray emission frequency of the X-ray scanner according to the adjustment effect of the electromagnetic shielding instrument of the interference adjustment measures, and determines the clarity of the scanned image of the object to determine the adjustment effect of the X-ray scanner. The present invention realizes efficient baggage security inspection, effectively improves the stability and safety of the airport weak current system, and provides a strong guarantee for the smooth operation of the airport.

Description

Technical Field

[0001] The present invention relates to the field of intelligent monitoring technology, and in particular to an airport weak current intelligent monitoring system based on wireless communication. Background Art

[0002] The requirements for airport safety management are increasing day by day, and it is necessary to rely on an efficient and stable weak current intelligent monitoring system to ensure the safety and smoothness of airport operations. The system realizes all-round monitoring of various areas of the airport through the combination of wireless communication technology and weak current technology. However, the widespread use of wireless communication equipment in the airport area also brings about the problem of electromagnetic interference, which may threaten the safe operation of aircraft and the stability of the monitoring system. Therefore, the system should fully consider electromagnetic compatibility and anti-interference capabilities when designing it to ensure that it can still operate stably in a complex electromagnetic environment, and effectively guarantee the airport's security inspection work and overall operational safety.

[0003] Chinese patent publication number CN117894152A discloses a security monitoring system based on weak current engineering, including a basic monitoring system and a strong awakening monitoring system. Under the action of the above-mentioned strong awakening monitoring system, the sound identification monitoring unit and the light identification monitoring unit can monitor whether the equipment issues a fault alarm from the two aspects of sound and light respectively. When the equipment issues a fault alarm, the strong reminder will sound a ringtone to remind the staff responsible for monitoring, ensuring that the staff can find the abnormality of the equipment at the first time, so as to ensure that the relevant staff can deal with the abnormality of the equipment in time. And through the setting of the abnormal monitoring unit, when the equipment without fault alarm function has an abnormal phenomenon of overtemperature, the strong reminder will also send a reminder to the staff, prompting the staff to make corresponding treatment in time, greatly improving the functionality of the strong awakening monitoring system. It can be seen that the invention has the following problems:

[0004] It does not consider how to ensure the accuracy of security checks when the airport security system is subject to strong electromagnetic interference. Summary of the invention

[0005] To this end, the present invention provides an airport weak current intelligent monitoring system based on wireless communication to overcome the problem in the prior art of not considering how to ensure the accuracy of the security inspection process when the airport security inspection system is subject to strong electromagnetic interference.

[0006] To achieve the above object, the present invention provides an airport weak current intelligent monitoring system based on wireless communication, comprising:

[0007] An electromagnetic interference scanning module is used to locate the electromagnetic interference source and determine the electromagnetic field strength and interference frequency of the electromagnetic interference source;

[0008] The electromagnetic shielding monitoring module includes a plurality of electromagnetic shielding devices for shielding electromagnetic signals at the airport security checkpoint, and determines the working status of each electromagnetic shielding device according to the shielding effectiveness of each electromagnetic shielding device at the airport security checkpoint;

[0009] An X-ray scanner module, including a plurality of X-ray scanners, for detecting objects on the conveyor belt and generating scanned images of the objects;

[0010] a cloud analysis control module, which is respectively connected to the electromagnetic interference scanning module, the electromagnetic shielding monitoring module and the X-ray scanner module, and is used to receive the working status of each electromagnetic shielding instrument and the scanned image of the object, determine the interference tendency type according to the electromagnetic field strength of the electromagnetic interference source, determine the corresponding electromagnetic shielding module and the working status of the electromagnetic shielding module according to the location of the electromagnetic interference source of the abnormal interference trend, determine the interference adjustment measure according to the interference tendency type and the working status of the electromagnetic shielding module, and determine whether to adjust the transmission speed and / or X-ray emission frequency of the X-ray scanner according to the adjustment effect of the electromagnetic shielding instrument of the interference adjustment measure, and determine the clarity of the scanned image of the object to determine the adjustment effect of the X-ray scanner;

[0011] The interference adjustment measures include adjusting the applied voltage of the electromagnetic shielding module, adjusting the measurement frequency and issuing an alarm signal.

[0012] Further, the electromagnetic shielding monitoring module determines the working state of each electromagnetic shielding device according to the comparison result between the shielding effectiveness of each electromagnetic shielding device and the shielding effectiveness threshold, and the cloud analysis and control module determines the working state of the electromagnetic shielding module according to the working state of each electromagnetic shielding device in the electromagnetic shielding module;

[0013] Among them, the working state of the electromagnetic shielding instrument includes a normal working state and an abnormal working state, and the working state of the electromagnetic shielding module includes a normal working state and an abnormal working state.

[0014] Further, the cloud analysis control module determines the interference tendency type according to the magnitude relationship between the electromagnetic field strength of the electromagnetic interference source and the electromagnetic field strength threshold;

[0015] The interference tendency types include normal interference trends and abnormal interference trends.

[0016] Furthermore, the cloud analysis control module determines the interference adjustment measures according to the determination result of the interference tendency type and the working state of the electromagnetic shielding module, including:

[0017] According to the determination result that the shielding adjustment condition is met, determining that the interference adjustment measure is to reduce the applied voltage of the electromagnetic shielding device and increase the monitoring frequency of the electromagnetic shielding monitoring module;

[0018] Among them, the shielding adjustment condition is that the interference tendency type is an abnormal interference tendency and the working state of the electromagnetic shielding module is a normal working state.

[0019] Further, the cloud analysis control module controls the electromagnetic shielding monitoring module to make adjustments according to the interference adjustment measures, and determines the electromagnetic shielding device adjustment effect of the interference adjustment measures according to the adjusted electromagnetic field strength of the electromagnetic interference source after adjustment determined by the electromagnetic interference scanning module;

[0020] The adjustment effect of the electromagnetic shielding device includes a benign change trend, a malignant characteristic state and a benign characteristic state.

[0021] Furthermore, the adjustment of the electromagnetic field strength is negatively correlated with the adjustment effect of the electromagnetic shielding device.

[0022] Furthermore, the cloud analysis control module determines to adjust the transmission speed of the X-ray scanner according to the adjustment effect of the electromagnetic shielding device with a benign change trend, so that the transmission speed after the adjustment is lower than the transmission speed before the adjustment.

[0023] Furthermore, the cloud analysis control module determines to reduce the transmission speed of the X-ray scanner and increase the X-ray emission frequency of the X-ray scanner according to the adjustment effect of the electromagnetic shielding device of the malignant characterization state.

[0024] Furthermore, the cloud analysis control module determines the interference adjustment measures according to the determination result of the interference tendency type and the working state of the electromagnetic shielding module, and also includes:

[0025] According to the determination result satisfying the alarm condition, determining that the interference adjustment measure is to issue an alarm signal, and controlling the X-ray scanner module to adjust the conveyor belt speed of each X-ray scanner to the minimum;

[0026] Among them, the alarm condition is that the interference tendency type is an abnormal interference tendency and the working state of the electromagnetic shielding module is an abnormal working state.

[0027] Further, the cloud analysis control module includes a deep learning unit, the deep learning unit determines the clarity of the scanned image of the object, and the cloud analysis control module determines the adjustment effect of the X-ray scanner based on the clarity of the scanned image of the object;

[0028] The clarity is positively correlated with the adjustment effect of the X-ray scanner.

[0029] Compared with the prior art, the beneficial effect of the present invention is that the airport weak current intelligent monitoring system based on wireless communication provided by the present invention realizes efficient baggage security inspection through accurate positioning of electromagnetic interference, dynamic regulation of electromagnetic shielding effectiveness, intelligent analysis and control, and wireless communication and integrated management, effectively improving the stability and safety of the airport weak current system, and providing a strong guarantee for the smooth operation of the airport;

[0030] Furthermore, the electromagnetic shielding monitoring module can realize intelligent alarm and maintenance prompt by judging the working state of the electromagnetic shielding device; by judging the working state of the electromagnetic shielding module corresponding to the electromagnetic interference source, the weak current intelligent monitoring system provided by the present invention can flexibly respond to electromagnetic interference and ensure the optimal utilization of resources, so as to achieve the purpose of ensuring that the normal operation of the X-ray scanner is not affected by malicious electromagnetic interference, thereby improving the stability and reliability of the airport's weak current system and providing strong support for the smooth operation of the airport;

[0031] Furthermore, the cloud-based analysis and control module can improve the system response speed, optimize resource allocation, and enhance system security by accurately identifying the interference tendency type of the electromagnetic interference source, thus providing a strong guarantee for the stable operation of the airport weak current system: by comparing the electromagnetic field strength of the electromagnetic interference source with the preset electromagnetic field strength threshold, the cloud-based analysis and control module can accurately identify the interference tendency type of the electromagnetic interference source, providing an accurate basis for subsequent interference adjustment measures;

[0032] Furthermore, the cloud-based analysis and control module determines whether to adjust the electromagnetic shielding device or dynamically adjust the parameters of the X-ray scanner in the future by accurately evaluating the adjustment effect of the electromagnetic shielding device, thereby optimizing the electromagnetic shielding effect and the performance of the security inspection equipment. This adjustment mechanism not only improves the accuracy of security inspections, but also enhances the security of the system, providing a strong guarantee for the smooth progress of airport security inspections. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a connection diagram of an airport weak current intelligent monitoring system based on wireless communication according to an embodiment of the present invention;

[0034] Figure 2 A flow chart for determining the working state of an electromagnetic shielding module according to an embodiment of the present invention;

[0035] Figure 3 A flow chart for determining interference adjustment measures according to an embodiment of the present invention;

[0036] Figure 4 The present invention is a flowchart of determining interference adjustment measures when shielding adjustment conditions are met in an embodiment of the present invention. DETAILED DESCRIPTION

[0037] 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.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] See also Figure 1 As shown, it is a connection diagram of an airport weak current intelligent monitoring system based on wireless communication according to an embodiment of the present invention. An embodiment of the present invention provides an airport weak current intelligent monitoring system based on wireless communication, including:

[0042] An electromagnetic interference scanning module is used to locate the electromagnetic interference source and determine the electromagnetic field strength and interference frequency of the electromagnetic interference source; in implementation, the electromagnetic interference scanning module includes a plurality of electromagnetic interference scanners, which are specially used to detect and locate the electromagnetic interference source, and they identify interference by capturing parameters such as the strength, direction and frequency of the electromagnetic field; therefore, they are very sensitive to electromagnetic waves and are designed to work in an environment where electromagnetic interference exists;

[0043] In practice, the electromagnetic interference scanning module can accurately locate the source of electromagnetic interference and determine its electromagnetic field strength and interference frequency, which helps to timely discover and deal with potential electromagnetic interference problems and ensure the stable operation of the airport's weak current system;

[0044] The electromagnetic shielding monitoring module includes a plurality of electromagnetic shielding devices for shielding electromagnetic signals at the airport security checkpoint, and determining the working status of each electromagnetic shielding device according to the shielding effectiveness of each electromagnetic shielding device at the airport security checkpoint; it is understandable that for the electromagnetic shielding film based on MXene material, the reflection and absorption behavior of the incident electromagnetic wave can be controlled bidirectionally by applying an external voltage: applying a small voltage to a V2CT_x film with a thickness of about 300nm can reduce its electromagnetic shielding effectiveness from about 24dB to about 18dB (X band, 8.2-12.4GHz), and it can be restored to its initial state after discharge; in implementation, the electromagnetic shielding device in this application uses an electrochemically driven electromagnetic shielding film developed based on MXene material. The electromagnetic shielding device using this type of electromagnetic shielding film will reduce the shielding effectiveness when the applied voltage is increased, and will increase the shielding effectiveness when the applied voltage is reduced; it is understandable that the electromagnetic shielding device can set the measurement time interval or trigger condition of the shielding effect through the instrument panel or software interface, and can provide more data points by increasing the measurement frequency, which is helpful to more accurately evaluate the shielding effect of the shielding body, especially in dynamic or complex working environments;

[0045] In practice, the electromagnetic shielding monitoring module uses an electrochemically driven electromagnetic shielding film based on MXene materials to dynamically control the electromagnetic shielding effectiveness by adjusting the applied voltage. This design not only improves the flexibility of electromagnetic shielding, but also can adjust the shielding effectiveness according to actual needs and optimize the electromagnetic environment at the airport security checkpoint.

[0046] An X-ray scanner module, including a plurality of X-ray scanners, for detecting objects on the conveyor belt and generating scanned images of the objects;

[0047] A cloud analysis control module, which is respectively connected to the electromagnetic interference scanning module, the electromagnetic shielding monitoring module and the X-ray scanner module, and is used to receive the working status of each electromagnetic shielding instrument and the scanned image of the object, determine the interference tendency type according to the electromagnetic field strength of the electromagnetic interference source, determine the corresponding electromagnetic shielding module and the working status of the electromagnetic shielding module according to the location of the electromagnetic interference source of the abnormal interference trend (it can be understood that a single electromagnetic shielding module includes at least one electromagnetic shielding instrument), determine the interference adjustment measures according to the interference tendency type and the working status of the electromagnetic shielding module, and determine whether to adjust the transmission speed and / or X-ray emission frequency of the X-ray scanner according to the adjustment effect of the electromagnetic shielding instrument of the interference adjustment measures, and determine the clarity of the scanned image of the object to determine the adjustment effect of the X-ray scanner; in implementation, the cloud analysis control module can receive and process data from each module, and intelligently determine the interference adjustment measures (including the adjustment of the applied voltage and the working parameters of the X-ray scanner) according to the electromagnetic interference situation, the working status of the electromagnetic shielding module and the clarity of the scanned image of the object, so as to achieve overall optimization of the system;

[0048] The interference adjustment measures include adjusting the applied voltage of the electromagnetic shielding module, adjusting the measurement frequency and issuing an alarm signal.

[0049] In implementation, each component of the airport weak-current intelligent monitoring system based on wireless communication provided by the present invention (including electromagnetic interference scanner, electromagnetic shielding device X-ray scanner and cloud platform end) is connected to the same intranet through a wireless network to enable wireless communication between the various parts.

[0050] It can be understood that the wireless communication-based airport weak-current intelligent monitoring system provided by the present invention realizes efficient baggage security inspection through precise positioning of electromagnetic interference, dynamic regulation of electromagnetic shielding effectiveness, intelligent analysis and control, wireless communication and integrated management, effectively improves the stability and safety of the airport weak-current system, and provides strong guarantee for the smooth operation of the airport.

[0051] See also Figure 2 As shown, it is a flow chart of determining the working state of the electromagnetic shielding module according to an embodiment of the present invention. Specifically, the electromagnetic shielding monitoring module determines the working state of each electromagnetic shielding instrument according to the comparison result between the shielding effectiveness of each electromagnetic shielding instrument and the shielding effectiveness threshold, and the cloud analysis control module determines the working state of the electromagnetic shielding module according to the working state of each electromagnetic shielding instrument in the electromagnetic shielding module;

[0052] Among them, the working state of the electromagnetic shielding instrument includes a normal working state and an abnormal working state, and the working state of the electromagnetic shielding module includes a normal working state and an abnormal working state.

[0053] In implementation, the shielding effectiveness threshold is determined based on the historical electromagnetic field strength of each airport, and the shielding effectiveness threshold is set at the lowest value that does not affect the operation of the X-ray scanner.

[0054] It can be understood that when the shielding effectiveness of a single electromagnetic shielding device is less than or equal to the shielding effectiveness threshold, the electromagnetic shielding monitoring module determines that the working state of the electromagnetic shielding device is a normal working state; when the shielding effectiveness of a single electromagnetic shielding device is greater than the shielding effectiveness threshold, the electromagnetic shielding monitoring module determines that the working state of the electromagnetic shielding device is an abnormal working state.

[0055] During implementation, the electromagnetic interference scanning module first locates the position of the electromagnetic interference source and sends it to the cloud analysis control module; then the cloud analysis control module determines the corresponding electromagnetic shielding module composed of multiple electromagnetic shielding devices according to the position of the electromagnetic interference source; finally, the working status of the electromagnetic shielding module is analyzed according to the working status of the electromagnetic shielding devices in the electromagnetic shielding module.

[0056] In implementation, if the position of the located electromagnetic interference source corresponds to a single electromagnetic shielding device, and the working state of the electromagnetic shielding device is an abnormal working state (that is, the position of the electromagnetic interference source is within the effective shielding range of the electromagnetic shielding device A, and A is in an abnormal working state), then the working state of the electromagnetic shielding module is determined to be an abnormal working state; in implementation, if the position of the located electromagnetic interference source corresponds to a single electromagnetic shielding device, and the working state of the electromagnetic shielding device is a normal working state (that is, the position of the electromagnetic interference source is within the effective shielding range of the electromagnetic shielding device B, and B is in a normal working state), then the working state of the electromagnetic shielding module is determined to be a normal working state;

[0057] In implementation, the location of the electromagnetic interference source may fall within the effective range of multiple electromagnetic shielding devices. If any one of the electromagnetic shielding devices is in normal working condition, the working condition of the electromagnetic shielding module is a normal working condition; that is, in one implementation, the location of the electromagnetic interference source falls within the effective range of three electromagnetic shielding devices. If these three electromagnetic shielding devices are all in abnormal working condition, the working condition of the electromagnetic shielding module is an abnormal working condition. If only less than three electromagnetic shielding devices are in abnormal working condition, the working condition of the electromagnetic shielding module is a normal working condition.

[0058] It can be understood that the electromagnetic shielding monitoring module sends the working status of each electromagnetic shielding device to the cloud analysis and control module, and when it is determined that a certain electromagnetic shielding device is in an abnormal working state, the electromagnetic shielding monitoring module will issue an alarm message and send the alarm message to the maintenance terminal so that maintenance personnel can repair the electromagnetic shielding device.

[0059] It can be understood that the electromagnetic shielding monitoring module realizes intelligent alarm and maintenance prompt by judging the working status of the electromagnetic shielding device; by judging the working status of the electromagnetic shielding module corresponding to the electromagnetic interference source, the weak current intelligent monitoring system provided by the present invention can flexibly respond to electromagnetic interference and ensure the optimal utilization of resources, so as to achieve the purpose of ensuring that the normal operation of the X-ray scanner is not affected by malicious electromagnetic interference, thereby improving the stability and reliability of the airport's weak current system and providing strong support for the smooth operation of the airport.

[0060] Specifically, the cloud analysis control module determines the interference tendency type according to the magnitude relationship between the electromagnetic field strength of the electromagnetic interference source and the electromagnetic field strength threshold;

[0061] The interference tendency types include normal interference trends and abnormal interference trends.

[0062] During implementation, if the electromagnetic field strength of the electromagnetic interference source is greater than or equal to the electromagnetic field strength threshold, it means that the electromagnetic interference source will affect the scanning equipment at the airport security checkpoint. Therefore, the cloud-based analysis and control module determines that the interference tendency type of the electromagnetic interference source is an abnormal interference trend, and the interference source needs to be processed at this time; if the electromagnetic field strength of the electromagnetic interference source is less than the electromagnetic field strength threshold, it means that the electromagnetic interference source will not affect the scanning equipment at the airport security checkpoint. Therefore, the cloud-based analysis and control module determines that the interference tendency type of the electromagnetic interference source is a normal interference trend, and the interference source does not need to be processed at this time.

[0063] It is understandable that the setting of the electromagnetic field strength threshold takes into account the security inspection strength of each airport, so that the system can flexibly adapt to the security needs of different airports. For airports shared by the military and civilians, the security inspection strength is relatively strong, and the corresponding electromagnetic field strength threshold is smaller, so that the system can more sensitively identify potential electromagnetic interference problems and ensure the stable operation of the airport weak current system; for purely civilian airports, the security inspection strength is relatively weak, and the corresponding electromagnetic field strength threshold is relatively large. In practice, the electromagnetic field strength threshold is generally set to 0.9 times the maximum electromagnetic field strength allowed by each airport.

[0064] It can be understood that the cloud-based analysis and control module provides strong guarantees for the stable operation of the airport's weak current system by accurately identifying the interference tendency type of the electromagnetic interference source, improving the system response speed, optimizing resource allocation, and enhancing system security: by comparing the electromagnetic field strength of the electromagnetic interference source with the preset electromagnetic field strength threshold, the cloud-based analysis and control module can accurately identify the interference tendency type of the electromagnetic interference source and provide an accurate basis for subsequent interference adjustment measures.

[0065] See also Figure 3 and Figure 4 As shown, they are respectively a flowchart of determining interference adjustment measures in an embodiment of the present invention and a flowchart of determining interference adjustment measures when the shielding adjustment conditions are met in an embodiment of the present invention. Specifically, the cloud analysis control module determines the interference adjustment measures according to the determination result of the interference tendency type and the working state of the electromagnetic shielding module, including:

[0066] According to the determination result that the shielding adjustment condition is met, determining that the interference adjustment measure is to reduce the applied voltage of the electromagnetic shielding device and increase the monitoring frequency of the electromagnetic shielding monitoring module;

[0067] Among them, the shielding adjustment condition is that the interference tendency type is an abnormal interference tendency and the working state of the electromagnetic shielding module is a normal working state.

[0068] It is understandable that when the electromagnetic interference scanner detects an electromagnetic field interference source with an abnormal interference trend, it means that the shielding effect of the electromagnetic shielding device is not good enough (if the shielding effect of the electromagnetic shielding device is very good, the electromagnetic field interference source with an abnormal interference trend will not be detected). Therefore, it is necessary to increase the shielding effect of the electromagnetic shielding device by reducing the applied voltage of the electromagnetic shielding device, and it is necessary to increase the monitoring frequency of the electromagnetic shielding monitoring module to quickly determine the shielding effect after adjusting the applied voltage.

[0069] It can be understood that when it is determined that an electromagnetic interference source with an abnormal interference trend exists and its corresponding electromagnetic detection module is in normal working condition, the shielding effect of each electromagnetic detector in the electromagnetic detection module can be adjusted to increase it to determine whether the interference source can be effectively handled by adjusting the electromagnetic detector.

[0070] Specifically, the cloud analysis control module controls the electromagnetic shielding monitoring module to make adjustments according to the interference adjustment measures, and determines the electromagnetic shielding device adjustment effect of the interference adjustment measures according to the adjusted electromagnetic field strength of the electromagnetic interference source after adjustment determined by the electromagnetic interference scanning module; it can be understood that the adjusted electromagnetic field strength is the electromagnetic field strength of the electromagnetic interference source after adjusting the applied voltage;

[0071] The adjustment effect of the electromagnetic shielding device includes a benign change trend, a malignant characteristic state and a benign characteristic state.

[0072] It can be understood that the shielding effect after adjusting the applied voltage is determined by the adjusted electromagnetic field strength determined by the electromagnetic interference scanning module: if the adjusted electromagnetic field strength decreases, it means that the measure of adjusting the applied voltage to increase the shielding effect is effective. (1) If the electromagnetic field strength is adjusted from an abnormal interference trend to a normal interference trend, it means that the electromagnetic shielding device adjustment effect is a benign characterization state and there is no need to readjust the applied voltage; (2) If the electromagnetic field strength is still abnormal, but the electromagnetic field strength becomes smaller, it means that the electromagnetic shielding device adjustment effect is a benign change trend. It is necessary to readjust the applied voltage to the electromagnetic shielding device adjustment effect. At this time, the conveyor belt speed of the X-ray scanner is reduced to avoid unclear scanning images of items generated during the adjustment process; (3) If the applied voltage is adjusted to the minimum and there is still an abnormal interference trend or the electromagnetic field strength is adjusted to the same as the electromagnetic field strength before adjustment (that is, changing the applied voltage has no effect on the electromagnetic field strength of the interference source), it means that the electromagnetic shielding device adjustment effect is a malignant characterization state. At this time, it means that adjusting the applied voltage of the electromagnetic shielding device is ineffective on the interference source. Therefore, the X-ray scanner needs to be adjusted. By lowering the speed of the conveyor belt on the X-ray scanner and increasing the X-ray emission frequency of the X-ray scanner, the accuracy of the X-ray scanner in scanning luggage items can be increased.

[0073] It is understandable that the cloud-based analysis and control module optimizes the electromagnetic shielding effect and security equipment performance by accurately evaluating the adjustment effect of the electromagnetic shielding device and determining whether to adjust the electromagnetic shielding device or dynamically adjust the parameters of the X-ray scanner in the future. This adjustment mechanism not only improves the accuracy of security inspections, but also enhances the security of the system, providing a strong guarantee for the smooth progress of airport security inspections.

[0074] In practice, the normal conveyor belt speed (conveyor belt speed when not adjusted) of the X-ray scanner for airport security is 0.2m / s~0.5m / s. The conveyor belt speed of each airport can be adjusted in real time according to the flow of people, and is generally set to 0.3m / s.

[0075] Specifically, the adjustment of the electromagnetic field strength is negatively correlated with the adjustment effect of the electromagnetic shielding device, that is, the smaller the adjustment of the magnetic field strength is, the better the adjustment effect of the electromagnetic shielding device is.

[0076] Specifically, the cloud analysis control module determines to adjust the transmission speed of the X-ray scanner according to the adjustment effect of the electromagnetic shielding device with a benign change trend, so that the transmission speed after adjustment is lower than the transmission speed before adjustment.

[0077] In implementation, the adjusted speed of the conveyor belt speed is positively correlated with the change value of the adjusted electromagnetic field intensity. The adjusted speed of the conveyor belt speed is the speed before adjustment times the calculated times of the adjusted intensity. The calculated times of the adjusted intensity is equal to the ratio of the adjusted difference in electromagnetic field intensity to the electromagnetic field intensity before adjustment. The adjusted difference in electromagnetic field intensity is the difference between the electromagnetic field intensity before adjustment and the adjusted electromagnetic field intensity.

[0078] Specifically, the cloud analysis control module determines to reduce the transmission speed of the X-ray scanner to a minimum speed of 0.1 m / s and increase the X-ray emission frequency of the X-ray scanner according to the adjustment effect of the electromagnetic shielding device of the malignant characterization state.

[0079] In implementation, the increased X-ray emission frequency is greater than the interference frequency of the electromagnetic interference source determined by the electromagnetic interference scanning module.

[0080] It is understandable that the waveform of the interfering electromagnetic wave emitted by the electromagnetic interference source is regular and fluctuating, so the interference of the interference source is also regular and intermittent. When the X-ray emission frequency is greater than the interference frequency, the X-ray scanner will obtain the detection result when there is no interference from the interference source. Combined with a slow conveyor belt, it is more helpful to obtain clear scan images of objects.

[0081] Specifically, the cloud analysis control module determines the interference adjustment measures according to the interference tendency type and the working state of the electromagnetic shielding module, and also includes:

[0082] According to the determination result, the interference adjustment measure is to send out an alarm signal, control the X-ray scanner module to adjust the conveyor belt speed of each X-ray scanner to the minimum, and increase the X-ray emission frequency of the X-ray scanner;

[0083] Among them, the alarm condition is that the interference tendency type is an abnormal interference tendency and the working state of the electromagnetic shielding module is an abnormal working state.

[0084] It is understandable that when the alarm conditions are met, it means that the electromagnetic shielding module corresponding to the interference source is in a state of complete failure. At this time, it is useless to adjust the shielding effect of the electromagnetic shielding module by applying an external voltage; therefore, it is necessary to directly control the X-ray scanner module to adjust the conveyor belt speed of each X-ray scanner to the minimum and increase the X-ray emission frequency of the X-ray scanner, and it is necessary to send an alarm signal to prompt timely maintenance.

[0085] In practice, the interference adjustment measures that meet the alarm conditions are the same as those in the malignant characterization state, which are to adjust the conveyor belt of the X-ray scanner and the X-ray emission frequency.

[0086] Specifically, the cloud analysis control module includes a deep learning unit, the deep learning unit determines the clarity of the scanned image of the object, and the cloud analysis control module determines the adjustment effect of the X-ray scanner based on the clarity of the scanned image of the object;

[0087] Among them, the clarity is positively correlated with the adjustment effect of the X-ray scanner, that is, the clearer the scanned image of the object, the better the adjustment effect of the X-ray scanner; it can be understood that when the clarity of the scanned image of the object is greater than or equal to the preset clarity, it is determined that the adjustment effect of the X-ray scanner meets the standard.

[0088] It is understandable that when the X-ray emission frequency is adjusted to the maximum, if the adjustment effect of the X-ray scanner still does not meet the standard, an alarm message is issued and the X-ray scanner is stopped.

[0089] In implementation, the preset clarity is: when the target size is 1.6mm, the number of line pairs corresponding to the minimum resolvable line of the image is not less than 10; when the target size is 0.8mm, the number of line pairs corresponding to the minimum resolvable line of the image is not less than 12; when the target size is 0.4mm, the number of line pairs corresponding to the minimum resolvable line of the image is not less than 15.

[0090] 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.

[0091] The above description is only a preferred embodiment of the present invention and is 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. The airport weak current intelligent monitoring system based on wireless communication is characterized by: include: An electromagnetic interference scanning module is used to locate the electromagnetic interference source and determine the electromagnetic field strength and interference frequency of the electromagnetic interference source; The electromagnetic shielding monitoring module includes a plurality of electromagnetic shielding devices for shielding electromagnetic signals at the airport security checkpoint, and determines the working status of each electromagnetic shielding device according to the shielding effectiveness of each electromagnetic shielding device at the airport security checkpoint; An X-ray scanner module, including a plurality of X-ray scanners, for detecting objects on a conveyor belt and generating scanned images of the objects; a cloud analysis control module, which is respectively connected to the electromagnetic interference scanning module, the electromagnetic shielding monitoring module and the X-ray scanner module, and is used to receive the working status of each electromagnetic shielding instrument and the scanned image of the object, determine the interference tendency type according to the electromagnetic field strength of the electromagnetic interference source, determine the corresponding electromagnetic shielding module and the working status of the electromagnetic shielding module according to the location of the electromagnetic interference source of the abnormal interference trend, determine the interference adjustment measure according to the interference tendency type and the working status of the electromagnetic shielding module, and determine whether to adjust the transmission speed and / or X-ray emission frequency of the X-ray scanner according to the adjustment effect of the electromagnetic shielding instrument of the interference adjustment measure, and determine the clarity of the scanned image of the object to determine the adjustment effect of the X-ray scanner; The cloud analysis control module determines the interference adjustment measures according to the determination result of the interference tendency type and the working state of the electromagnetic shielding module, including: According to the determination result that the shielding adjustment condition is met, determining that the interference adjustment measure is to reduce the applied voltage of the electromagnetic shielding device and increase the monitoring frequency of the electromagnetic shielding monitoring module; Among them, the shielding adjustment condition is that the interference tendency type is an abnormal interference tendency and the working state of the electromagnetic shielding module is a normal working state.

2. The airport weak current intelligent monitoring system based on wireless communication according to claim 1 is characterized in that: The electromagnetic shielding monitoring module determines the working state of each electromagnetic shielding device according to the comparison result between the shielding effectiveness of each electromagnetic shielding device and the shielding effectiveness threshold, and the cloud analysis and control module determines the working state of the electromagnetic shielding module according to the working state of each electromagnetic shielding device in the electromagnetic shielding module; Among them, the working state of the electromagnetic shielding instrument includes a normal working state and an abnormal working state, and the working state of the electromagnetic shielding module includes a normal working state and an abnormal working state.

3. The airport weak current intelligent monitoring system based on wireless communication according to claim 1 is characterized in that: The cloud analysis control module determines the interference tendency type according to the magnitude relationship between the electromagnetic field strength of the electromagnetic interference source and the electromagnetic field strength threshold; The interference tendency types include normal interference trends and abnormal interference trends.

4. The airport weak current intelligent monitoring system based on wireless communication according to claim 1 is characterized in that: The cloud analysis control module controls the electromagnetic shielding monitoring module to make adjustments according to the interference adjustment measures, and determines the electromagnetic shielding device adjustment effect of the interference adjustment measures according to the adjusted electromagnetic field strength of the electromagnetic interference source after adjustment determined by the electromagnetic interference scanning module; The adjustment effect of the electromagnetic shielding device includes a benign change trend, a malignant characteristic state and a benign characteristic state.

5. The airport weak current intelligent monitoring system based on wireless communication according to claim 4 is characterized in that: The adjustment of the electromagnetic field strength is negatively correlated with the adjustment effect of the electromagnetic shielding device.

6. The airport weak current intelligent monitoring system based on wireless communication according to claim 4 is characterized in that: The cloud analysis control module determines to adjust the transmission speed of the X-ray scanner according to the adjustment effect of the electromagnetic shielding device with a benign change trend, so that the transmission speed after adjustment is lower than the transmission speed before adjustment.

7. The airport weak current intelligent monitoring system based on wireless communication according to claim 4 is characterized in that: The cloud analysis control module determines to reduce the transmission speed of the X-ray scanner and increase the X-ray emission frequency of the X-ray scanner according to the adjustment effect of the electromagnetic shielding device of the malignant characterization state.

8. The airport weak current intelligent monitoring system based on wireless communication according to claim 1 is characterized in that: The cloud analysis control module determines the interference adjustment measures according to the determination result of the interference tendency type and the working state of the electromagnetic shielding module, and also includes: According to the determination result satisfying the alarm condition, determining that the interference adjustment measure is to issue an alarm signal, and controlling the X-ray scanner module to adjust the conveyor belt speed of each X-ray scanner to the minimum; Among them, the alarm condition is that the interference tendency type is an abnormal interference tendency and the working state of the electromagnetic shielding module is an abnormal working state.

9. The airport weak current intelligent monitoring system based on wireless communication according to claim 1 is characterized in that: The cloud analysis control module includes a deep learning unit, the deep learning unit determines the clarity of the scanned image of the object, and the cloud analysis control module determines the adjustment effect of the X-ray scanner according to the clarity of the scanned image of the object; The clarity is positively correlated with the adjustment effect of the X-ray scanner.

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