Cable tunnel access control remote control method and system based on digital twinning

Abstract

The invention provides a cable tunnel access control remote control method and system based on digital twinning. The system comprises a digital twinning module, a field monitoring module, an intelligent analysis module and an access control control module, wherein the digital twin module is used for generating a monitoring model of a cable tunnel; the on-site monitoring module is arranged in a cable tunnel site and is used for acquiring on-site monitoring data of the cable tunnel and transmitting the acquired on-site monitoring data back to the digital twin module; the intelligent analysis module is used for carrying out environment safety analysis and personnel safety analysis according to the field monitoring data in the monitoring model, and carrying out conjoint analysis according to an obtained environment safety analysis result and an obtained personnel safety analysis result to obtain a control strategy of a corresponding access control node; and the access control module is used for performing corresponding remote control on the access control system of the cable tunnel site according to the obtained control strategy of each access control node. According to the invention, the safety and reliability of cable tunnel construction and daily management can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of cable tunnel monitoring, and in particular to a method and system for remotely controlling access control of a cable tunnel based on digital twins. Background Art

[0002] With the acceleration of my country's urbanization process, the construction of infrastructure such as electricity and communications is also accelerating. The construction and use of cable tunnels are becoming more and more extensive. Due to the critical characteristics of cable tunnels, outsiders are usually not allowed to enter cable tunnels. At the same time, due to the connectivity of cable tunnels, cable tunnels are generally set up in sections, that is, corresponding access control checkpoints are set up at intervals to achieve safety (such as fire prevention, anti-theft) and other purposes.

[0003] However, in the daily use of cable tunnels, due to outdated equipment or insufficient intelligence, the access control checkpoints in cable tunnels are easily overlooked in daily use (for example, the operation and maintenance personnel do not close the access control in time after completing the operation and maintenance, or the access control is kept open for convenience), which makes the access control system installed in the cable tunnel unable to play its due role. Once an abnormal situation occurs, it poses a serious threat to the safety of life and property, affecting the safety and reliability of cable tunnel construction and daily management. Summary of the invention

[0004] In response to the above problems, the present invention aims to provide a cable tunnel access remote control method and system based on digital twins.

[0005] The purpose of the present invention is achieved by adopting the following technical solutions: In the first aspect, the present invention shows a cable tunnel access control remote control system based on digital twin, including: a digital twin module, a field monitoring module, an intelligent analysis module and an access control module; wherein, The digital twin module is used to generate a monitoring model for the cable tunnel, where the monitoring model includes the spatial structural characteristics of the cable tunnel and the characteristics of the monitoring nodes contained in each space, where the monitoring nodes include environmental monitoring nodes and access control nodes; The field monitoring module is set up in the cable tunnel site to collect the field monitoring data of the cable tunnel and transmit the collected field monitoring data back to the digital twin module, so that the digital twin module integrates the received field monitoring data into the corresponding monitoring node of the monitoring model and updates the monitoring model; the field monitoring data includes environmental monitoring data and access control monitoring data; The intelligent analysis module is used to perform environmental safety analysis and personnel safety analysis based on the on-site monitoring data in the monitoring model, obtain environmental safety analysis results and personnel safety analysis results, and perform joint analysis based on the obtained environmental safety analysis results and personnel safety analysis results to obtain the control strategy of the corresponding access control node; The access control module is used to remotely control the access control system at the cable tunnel site according to the control strategies of each access control node, including controlling the switch status of the access control system and the displayed information.

[0006] Preferably, the digital twin module includes a model building unit and an interface unit; wherein, The model setting unit is used to build a monitoring model according to the spatial structure of the cable tunnel based on the digital twin technology, and to set corresponding environmental monitoring nodes and access control nodes in the monitoring model according to the on-site layout of the cable tunnel; The interface unit is used to establish a communication connection with the field monitoring module, receive the field monitoring data sent back by the monitoring node in real time, and integrate the acquired field monitoring data into the corresponding monitoring node of the monitoring model.

[0007] Preferably, the on-site monitoring module includes a sensor unit, a door access control unit and a gateway unit; wherein, The sensor unit is used to collect environmental monitoring data at the cable tunnel site and transmit the collected environmental monitoring data to the gateway unit, where the environmental monitoring data includes temperature, humidity, dust concentration, harmful gas concentration, etc.; The access control unit is used to collect access control monitoring data at the cable tunnel site and transmit the acquired access control monitoring data to the gateway unit, where the access control monitoring data includes the switch data of the access control and the identity information of the personnel passing through the access control at the site; The gateway unit is communicatively connected to the digital twin module and is used to transmit the acquired environmental monitoring data and access control monitoring data to the digital twin module.

[0008] Preferably, the access control includes security access control and general access control, wherein the security access control is arranged at the main entrance and exit of the cable tunnel; Generally, the access control is set inside the cable tunnel to divide the cable tunnel into different spaces. The access control is generally provided with a display unit, which is used to display corresponding information according to the received control instructions; the access control nodes in the monitoring model include general access control nodes and security access control nodes.

[0009] Preferably, the intelligent analysis module includes an environment analysis unit, a personnel analysis unit and a joint analysis unit; wherein, The environmental analysis unit is used to perform environmental safety analysis based on the environmental monitoring data of each monitoring node in the monitoring model to obtain environmental safety analysis results; The personnel analysis unit is used to perform personnel safety analysis based on the personnel identity information obtained by each access control node in the monitoring model to obtain personnel safety analysis results, wherein the personnel safety analysis results include abnormal personnel analysis results and the current personnel retention situation in each area; The joint analysis unit is used to perform joint analysis based on the obtained environmental safety analysis results and personnel safety analysis results to obtain the control strategy of the corresponding access control node.

[0010] Preferably, the environmental monitoring unit comprises: According to the acquired environmental monitoring data, the environmental monitoring data is compared and analyzed with the preset standard threshold value. When the environmental monitoring data obtained by the comparison and analysis exceeds the corresponding standard threshold value, the environmental safety analysis result is obtained as abnormal; The personnel analysis unit includes: Authentication is performed based on the obtained personnel identity information. When the personnel identity information is a whitelist personnel, the personnel security analysis result is normal; otherwise, the personnel security analysis result is abnormal.

[0011] Preferably, the access control unit includes a state acquisition unit and an image acquisition unit; wherein, The status acquisition unit is used to obtain the switch data of the access control; The image acquisition unit is used to obtain the facial image of the visitor who passes through the access control or requests to pass through the access control, and generates the visitor access information based on the acquired facial image of the visitor, and transmits the visitor access information to the digital twin module, which then provides feedback in the monitoring model; The personnel analysis unit is also used to extract a personnel face image according to the obtained personnel access information, and perform personnel identity recognition according to the obtained access personnel face image to obtain the access personnel identity information, and further perform authority recognition according to the obtained personnel identity information to obtain the personnel security analysis result; when the personnel identity information cannot be recognized or the authority corresponding to the personnel identity information is insufficient, the personnel analysis result is obtained as abnormal; Based on the identified personnel identity information, the current location of the visiting personnel is further recorded to obtain the personnel retention situation in each area.

[0012] Preferably, the joint analysis unit includes a first strategy analysis unit and / or a second strategy analysis unit; wherein, The first strategy analysis unit is used to generate a first control strategy for closing the access control for general access control nodes when an abnormality occurs in the environmental security analysis results; and further generate a second control strategy for displaying prompt information for each general access control node according to the location where the security abnormality occurs; wherein the prompt information includes abnormal prompt information and escape direction prompt information.

[0013] The second strategy analysis unit is used to further judge the personnel safety analysis result when the environmental safety analysis result is normal, and to generate a fourth control strategy for closing and locking the access control for the security access control node when the personnel safety analysis result is abnormal.

[0014] Preferably, the access control module includes a command generation unit and a remote control unit; The instruction generation unit is used to generate control instructions for the access control system at the cable tunnel site according to the obtained control strategy of each access control node, wherein the control instructions include information of the access control system to be controlled, and switch control instructions and display control instructions corresponding to the access control system; The remote control instructions are used to remotely control the corresponding access control system at the cable tunnel site according to the generated control instructions, so that the access control system changes to a specified state.

[0015] In a second aspect, the present invention shows a control method of a cable tunnel access control remote control system based on a digital twin as described in any one of the embodiments of the first aspect above, comprising the following steps: The digital twin module generates a monitoring model of the cable tunnel, where the monitoring model includes the spatial structural characteristics of the cable tunnel and the characteristics of the monitoring nodes contained in each space, where the monitoring nodes include environmental monitoring nodes and access control nodes; The field monitoring module collects the field monitoring data of the cable tunnel and transmits the collected field monitoring data back to the digital twin module, so that the digital twin module integrates the received field monitoring data into the corresponding monitoring nodes of the monitoring model and updates the monitoring model; the field monitoring data includes environmental monitoring data and access control monitoring data; The intelligent analysis module performs environmental safety analysis and personnel safety analysis based on the on-site monitoring data in the monitoring model, obtains environmental safety analysis results and personnel safety analysis results, and performs joint analysis based on the obtained environmental safety analysis results and personnel safety analysis results to obtain the control strategy of the corresponding access control node; The access control module remotely controls the access control system at the cable tunnel site according to the control strategies of each access control node, including controlling the switch status of the access control system and the displayed information.

[0016] The beneficial effects of the present invention are as follows: the present invention builds a monitoring model for a cable tunnel based on digital twin technology, and sets the monitoring model accordingly according to the actual situation of the cable tunnel, so as to restore the door space structure and access control settings in the digital twin model through the monitoring model, so as to facilitate the subsequent overall monitoring and remote control of the cable tunnel access control system based on the monitoring model. Among them, the real-time monitoring data of the monitoring model is obtained by the on-site monitoring module. By setting the on-site monitoring module at the cable tunnel site, the real-time collection of the on-site monitoring data of the cable tunnel can be realized, and the monitoring model can be updated in real time according to the collected on-site monitoring data, which is helpful to improve the real-time level of the cable tunnel access control remote control system. Based on the monitoring model, the intelligent analysis module performs intelligent environmental safety analysis and personnel safety analysis on the cable tunnel, and performs intelligent analysis and monitoring on the impact of the cable tunnel access control from multiple dimensions, which is helpful to improve the intelligent level of the cable tunnel access control system control. When an abnormal situation is detected in the cable tunnel, a corresponding access control system control strategy is generated, and the access control module performs corresponding remote control on the access control system at the cable tunnel site to reduce and avoid the impact of abnormal situations and improve the intelligent level of unmanned monitoring of the cable tunnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention is further described using the accompanying drawings, but the embodiments in the accompanying drawings do not constitute any limitation to the present invention. A person skilled in the art can obtain other drawings based on the following drawings without creative work.

[0018] Figure 1 This is a framework diagram of a cable tunnel access control remote control system based on digital twins shown in an embodiment of the present invention. DETAILED DESCRIPTION

[0019] The present invention is further described in conjunction with the following application scenarios.

[0020] See also Figure 1 The embodiment shows a cable tunnel access control remote control system based on digital twin, including: a digital twin module, a field monitoring module, an intelligent analysis module and an access control module; wherein, The digital twin module is used to generate a monitoring model for the cable tunnel, where the monitoring model includes the spatial structural characteristics of the cable tunnel and the characteristics of the monitoring nodes contained in each space, where the monitoring nodes include environmental monitoring nodes and access control nodes; The field monitoring module is set up in the cable tunnel site to collect the field monitoring data of the cable tunnel and transmit the collected field monitoring data back to the digital twin module, so that the digital twin module integrates the received field monitoring data into the corresponding monitoring node of the monitoring model and updates the monitoring model; the field monitoring data includes environmental monitoring data and access control monitoring data; The intelligent analysis module is used to perform environmental safety analysis and personnel safety analysis based on the on-site monitoring data in the monitoring model, obtain environmental safety analysis results and personnel safety analysis results, and perform joint analysis based on the obtained environmental safety analysis results and personnel safety analysis results to obtain the control strategy of the corresponding access control node; The access control module is used to remotely control the access control system at the cable tunnel site according to the control strategies of each access control node, including controlling the switch status of the access control system and the displayed information.

[0021] The above-mentioned implementation mode of the present invention builds a monitoring model for the cable tunnel based on the digital twin technology, and sets the monitoring model accordingly according to the actual situation of the cable tunnel, so as to restore the door space structure and access control settings in the digital twin model through the monitoring model, so as to facilitate the subsequent overall monitoring and remote control of the cable tunnel access control system based on the monitoring model. Among them, the real-time monitoring data of the monitoring model is obtained by the on-site monitoring module. By setting up the on-site monitoring module at the cable tunnel site, the real-time collection of the on-site monitoring data of the cable tunnel can be realized, and the monitoring model can be updated in real time according to the collected on-site monitoring data, which helps to improve the real-time level of the cable tunnel access control remote control system. Based on the monitoring model, the intelligent analysis module conducts intelligent environmental safety analysis and personnel safety analysis on the cable tunnel, and conducts intelligent analysis and monitoring of the impact of the cable tunnel access control from multiple dimensions, which helps to improve the intelligence level of the cable tunnel access control system control. When an abnormal situation is detected in the cable tunnel, a corresponding access control system control strategy is generated, and the access control system at the cable tunnel site is remotely controlled through the access control control module to reduce and avoid the impact of abnormal situations, improve the intelligence level of unmanned monitoring of cable tunnels, and help improve the safety and reliability of cable tunnel construction and daily management.

[0022] Among them, the present invention is also particularly aimed at when abnormal situations such as fire and thick smoke occur in the cable tunnel, it can accurately identify and locate the abnormal situation in time, and according to the abnormal situation obtained, uniformly control the access control system in the cable tunnel to achieve the effect of blocking the abnormal situation and preventing the spread of the abnormal situation. At the same time, according to the location where the abnormal situation occurs, the route of personnel evacuation is intelligently analyzed, and the access control system is controlled based on the evacuation route to display corresponding prompt information to assist on-site personnel in evacuating, avoiding the situation where on-site personnel cannot determine the evacuation route due to the bad tunnel environment, thereby improving the safety of daily use of cable tunnels.

[0023] Preferably, the digital twin module includes a model building unit and an interface unit; wherein, The model setting unit is used to build a monitoring model according to the spatial structure of the cable tunnel based on the digital twin technology, and to set corresponding environmental monitoring nodes and access control nodes in the monitoring model according to the on-site layout of the cable tunnel; The interface unit is used to establish a communication connection with the field monitoring module, receive the field monitoring data sent back by the monitoring node in real time, and integrate the acquired field monitoring data into the corresponding monitoring node of the monitoring model.

[0024] In the setting stage, based on the actual on-site conditions of the cable tunnel, a monitoring model corresponding to the cable tunnel can be constructed through the model setting unit. At the same time, according to the actual settings of the monitoring equipment and access control equipment in the cable tunnel, environmental monitoring nodes and access control nodes are set at the corresponding positions of the monitoring model, so that the specific data reflected in the monitoring model corresponds to the cable tunnel site, thereby improving the accuracy of the monitoring model construction. According to the set monitoring model, the interface unit communicates with the on-site monitoring module at the cable tunnel site and receives the data sent back by the on-site equipment, wherein the data sent back by the environmental monitoring equipment is updated to the corresponding environmental monitoring node, and the data sent back by the access control equipment is updated to the corresponding access control node.

[0025] Preferably, the on-site monitoring module includes a sensor unit, a door access control unit and a gateway unit; wherein, The sensor unit is used to collect environmental monitoring data at the cable tunnel site and transmit the collected environmental monitoring data to the gateway unit, where the environmental monitoring data includes temperature, humidity, dust concentration, harmful gas concentration, etc.; The access control unit is used to collect access control monitoring data at the cable tunnel site and transmit the acquired access control monitoring data to the gateway unit, where the access control monitoring data includes the switch data of the access control and the identity information of the personnel passing through the access control at the site; The gateway unit is communicatively connected to the digital twin module and is used to transmit the acquired environmental monitoring data and access control monitoring data to the digital twin module.

[0026] The on-site monitoring module is set up in the cable tunnel site, where the sensor units are distributed in different spaces of the cable tunnel, and can collect environmental monitoring data at various locations in the cable tunnel in real time. For special spaces, targeted environmental monitoring sensors can also be set up to obtain a certain environmental indicator in the space to meet the needs of environmental data monitoring and collection in the cable tunnel.

[0027] As a dividing point between subspaces in the cable tunnel, the access control unit can obtain information about people passing through each space. At the same time, the access control unit also transmits its own opening and closing status data in real time to reflect the operating status of the access control system in the cable tunnel.

[0028] When the sensor unit and access control unit collect and need to transmit corresponding monitoring data, the data transmission is realized through the network management unit. Through wireless data transmission technology, the monitoring data can be quickly and accurately transmitted back to the digital twin module.

[0029] Preferably, the access control includes security access control and general access control, wherein the security access control is arranged at the main entrance and exit of the cable tunnel; Generally, an access control system is provided inside a cable tunnel to divide the cable tunnel into different spaces. Generally, a display unit is provided on the access control system to display corresponding information according to received control instructions.

[0030] Accordingly, the access control nodes in the monitoring model include general access control nodes and security access control nodes; Among them, considering the needs of actual application scenarios and the needs of personnel and environmental security, the access control equipment installed on the cable tunnel site is divided into general access control and security access control. The security access control is set at the main entrance and exit of the cable tunnel. Generally, an area with high environmental safety is reserved in the security access control to meet the security needs while avoiding the occurrence of safety accidents caused by people being trapped. The general access control is set inside the cable tunnel to separate the subspaces in the cable tunnel. The general access control has functions such as fire prevention and smoke prevention. In an emergency, it can effectively isolate the environmental abnormalities in the subspaces of the cable tunnel to alleviate the spread of abnormal conditions and effectively improve the safety of the cable tunnel site environment. Among them, the general access control is also specially provided with a display unit, through which the corresponding prompt information (such as dynamic escape route display in an emergency, partition indication in general, etc.) can be displayed to assist personnel in understanding the relevant prompt information and content in the cable tunnel.

[0031] Among them, general access control and security access control are both remotely controlled by the system, which can realize the opening and closing control of the access control and the control of the prompt information displayed by the display unit on the access control system.

[0032] Preferably, the intelligent analysis module includes an environment analysis unit, a personnel analysis unit and a joint analysis unit; wherein, The environmental analysis unit is used to perform environmental safety analysis based on the environmental monitoring data of each monitoring node in the monitoring model to obtain environmental safety analysis results; The personnel analysis unit is used to perform personnel safety analysis based on the personnel identity information obtained by each access control node in the monitoring model to obtain personnel safety analysis results, wherein the personnel safety analysis results include abnormal personnel analysis results and the current personnel retention situation in each area; The joint analysis unit is used to perform joint analysis based on the obtained environmental safety analysis results and personnel safety analysis results to obtain the control strategy of the corresponding access control node.

[0033] The setting of the intelligent analysis module is mainly divided into three parts: the environmental analysis unit is specifically used to compare and analyze the obtained environmental monitoring data with the corresponding indicators, monitor whether the environmental monitoring data exceeds the indicators or abnormal conditions occur in the cable tunnel site, and obtain environmental safety analysis results. The personnel analysis unit is specifically used to perform security verification based on the personnel identity information obtained by each access control node, so as to determine whether the personnel staying in the cable tunnel are abnormal personnel, and obtain the personnel retention situation in each area of ​​the current cable tunnel based on the data feedback from each access control node.

[0034] The joint analysis unit performs a joint analysis based on the environmental safety analysis results and the personnel safety analysis results. In particular, when abnormal conditions occur in the environmental safety analysis results, it generates control strategies for each access control node in combination with the current personnel safety analysis results, thereby improving the intelligence level of security analysis.

[0035] Preferably, the environmental monitoring unit comprises: Based on the acquired environmental monitoring data, the environmental monitoring data is compared and analyzed with the preset standard threshold value. When the environmental monitoring data obtained through the comparison and analysis exceeds the corresponding standard threshold value, the environmental safety analysis result is obtained as abnormal.

[0036] For environmental safety analysis, it is possible to compare and analyze the obtained environmental monitoring data with the corresponding environmental indicators, monitor whether the environmental monitoring indicators in the cable tunnel are exceeded or abnormal, and quickly identify and feedback the abnormal environmental conditions at the cable tunnel site.

[0037] Preferably, the personnel analysis unit includes: Authentication is performed based on the obtained personnel identity information. When the personnel identity information is a whitelist personnel, the personnel security analysis result is normal; otherwise, the personnel security analysis result is abnormal.

[0038] The personnel analysis unit performs security verification on the personnel identity information, performs identity recognition based on the obtained personnel identity information, and determines whether the person is a white-listed person or an abnormal person, thereby determining whether the identity of the person entering the cable tunnel is safe.

[0039] Preferably, the personnel analysis unit further includes: According to the current time information, it is determined whether the current time is the preset alert time period. If the current time is the alert time period and it is detected that there are currently visiting personnel staying in the cable tunnel, the personnel safety analysis result is abnormal.

[0040] In another way, for the judgment of personnel safety, time information can be further added as an analysis parameter, such as setting the time period for allowed entry or judging the personnel safety analysis results based on the continuous stay time of personnel in the cable tunnel, so as to further improve the reliability of personnel safety analysis.

[0041] Preferably, the access control unit includes a state acquisition unit and an image acquisition unit; wherein, The status acquisition unit is used to obtain the switch data of the access control; The image acquisition unit is used to obtain the facial image of the visitor who passes through the access control or requests to pass through the access control, and generates the visitor access information based on the acquired facial image of the visitor, and transmits the visitor access information to the digital twin module, which then provides feedback in the monitoring model; The personnel analysis unit is also used to extract the facial image of the accessing personnel according to the obtained personnel access information, and perform personnel identity recognition according to the obtained facial image of the accessing personnel to obtain the identity information of the accessing personnel, and further perform authority recognition according to the obtained personnel identity information to obtain the personnel security analysis result; when the personnel identity information cannot be recognized or the authority corresponding to the personnel identity information is insufficient, the personnel analysis result is obtained as abnormal; Based on the identified personnel identity information, the current location of the visiting personnel is further recorded to obtain the personnel retention situation in each area.

[0042] Among them, the method for verifying the identity information of personnel can be to identify and verify the personnel currently passing through the access control node by means of face recognition. First, the face image of the personnel is collected by the access control equipment on the cable tunnel site and transmitted to the analysis module. The analysis module performs identity recognition based on the obtained face image, and obtains the user's identity information based on the face recognition result, retrieves the corresponding access rights based on the obtained identity information, and judges whether the user is allowed to pass based on the obtained permission result, thereby obtaining the personnel security analysis result. At the same time, according to the personnel identity recognition results obtained by each access control, the movement trajectory of the personnel in the cable tunnel is tracked, so as to further obtain the specific location of the personnel in the cable tunnel and the corresponding detention situation. By obtaining the identity information of the personnel passing through the access control based on face recognition, the reliability of identity recognition and verification can be improved, and the occurrence of identity theft and the like in the process of verification by traditional means such as account passwords or communication cards can be avoided. The personnel situation in the cable tunnel can be accurately captured, and the adaptability of subsequent remote control of the cable tunnel access control system is improved.

[0043] Preferably, the personnel analysis unit includes an image processing unit; The image processing unit is used to perform personnel identification based on the acquired facial image of the visiting person to obtain the identity information of the visiting person; it includes: Preprocessing is performed according to the acquired facial image of the visiting person to obtain the preprocessed facial image of the visiting person; Perform feature extraction based on the preprocessed face image of the visitor to obtain the face features of the visitor; The acquired facial features of the visitor are identified and analyzed with the facial features of the preset whitelist personnel to obtain the identity information of the visitor. If the facial features of the corresponding whitelist personnel cannot be matched, the visitor is recorded as a stranger.

[0044] For identity authentication based on face recognition, an image processing unit is provided in the personnel analysis unit to specifically perform recognition processing on the acquired face image to obtain the identity information of the access personnel. The face image of the access personnel acquired by the access control node is first preprocessed to improve the image quality, and then the face features are extracted based on the face image. Based on the obtained face features, similarity matching analysis is performed with the standard face features pre-stored in the database to identify the identity information of the corresponding person.

[0045] Among them, considering that the cable tunnel is a non-outdoor space, due to the lack of natural light, white light is usually used to provide light source. In the closed environment of the cable tunnel, it is easy to cause the collected face image to be backlit or reflected, affecting the clarity of the visitor's face image. Therefore, for the acquired visitor's face image, the face image is first pre-processed to improve the image clarity and enhance the light and shadow anomalies in the face image, thereby improving the reliability and adaptability of subsequent identity recognition and identification based on the face image.

[0046] Preferably, in the image processing unit, preprocessing is performed based on the acquired facial image of the visiting person, specifically including: 1) According to the acquired face image of the visitor, the face image of the visitor is converted from the RGB color space to the HSV color space, and the hue channel sub-image P(H), saturation channel sub-image P(S) and brightness channel sub-image P(V) of the face image of the visitor are obtained respectively; 2) Extract the illumination feature component of each pixel based on the obtained brightness channel sub-image, where the illumination feature component calculation function used is:

[0047] in, SH(x,y) Represents pixel (x,y) The illumination characteristic component, v(x,y) Represents pixel (x,y) The brightness channel value, , Respectively represent scale control factors; 3) Analyze the image brightness distribution based on the illumination characteristic components of each pixel: The brightness impact value of each feature position is calculated respectively, and the brightness impact value calculation function used is:

[0048] in, VS(G j ) represents the brightness influence value of the jth feature position, where j=1,2,…,5; the coordinates of the five feature positions are G 1 =(1 / 5×L, 4 / 5×H), G 2 =(4 / 5×L, 4 / 5×H), G 3 =(1 / 5×L, 1 / 5×H), G 4 =(4 / 5×L, 1 / 5×H), G 5 =(1 / 2×L,1 / 2×H); (a,b)∈K Represents variable pixels (a,b) Belongs to collection collection K The pixel points of which are K Represents the set of all pixels in the image;β Represents the preset distance adjustment factor, where β∈ [0.01, 100], D((a,b), G j ) Represents pixel (a,b) To feature location G j distance; According to the brightness influence value of each feature position, when the condition IFAND1 is met: VS(G a )>VST1 and | VS(G a ) - VS(G b )| >VST2, where variables a, b = 1, 2, …5; VST1 and VST2 Respectively represent the set impact thresholds, where VST1∈[0.6,0.8], VST2∈[0.4,0.6], Then mark the current image as an impact image, otherwise when the condition IFAND1 is not satisfied, mark the current image as a general image; 4) For the cases marked as affecting the image, the brightness of each pixel in the image is suppressed, and the brightness suppression function used is:

[0049] in, v'(x,y) Represents the pixel after brightness suppression processing (x,y) The brightness channel value, v(x,y) Represents pixel (x,y) The brightness channel value, h(x,y) Represents pixel (x,y) The gray value of SH Q(x,y) Indicated in pixels (x,y) The average illumination feature component of each pixel within a 5×5 range centered on SH P Represents the average illumination feature component of the image; The brightness of all pixels is further balanced, and the brightness balance function used is:

[0050] in, v''(x,y) Indicates the pixel after brightness equalization processing (x,y) The brightness channel value, vTT Indicates the set brightness channel standard value, where vTT∈[0.5,0.7] ; Obtain a face image after brightness equalization processing, extract edge features based on the face image, obtain edge pixels in the face image of the visitor, and record the edge pixels in the set GA(D); wherein the edge pixel detection can be completed by using the Sobel or Roberts edge pixel detection operator; The brightness stretching process is performed on the pixel point (c, d) in the set GA(D), and the brightness stretching function used is:

[0051] Wherein, v'''(c, d) represents the brightness channel value of the pixel point (c, d) after brightness stretching, v''(c, d) represents the brightness channel value of the pixel point (c, d) before brightness stretching, and represents the average brightness channel value of each pixel point within a 5×5 range centered on the pixel point (c, d); According to the brightness channel sub-image P(V'''), hue channel sub-image P(H), and saturation channel sub-image P(S) after brightness stretching, they are reconverted to RGB color space to obtain the pre-processed face image of the interviewee; 5) For the case marked as a general image, the brightness of each pixel in the image is adjusted, and the brightness adjustment function used is:

[0052] in, v'(x,y) Indicates the pixel after brightness adjustment (x,y) The brightness channel value, v Q(x,y) Indicated in pixels (x,y) The average brightness channel value of each pixel within a 5×5 range centered on vTT Indicates the set brightness channel standard value, where vTT∈[0.5,0.7] ; According to the brightness channel sub-image P(V') and hue channel sub-image P(H) after brightness adjustment, the saturation channel sub-image P(S) is reconverted to the RGB color space to obtain the preprocessed face image of the visitor.

[0053] Preferably, the scale control factor, ，。

[0054] In another way, the set K represents a set of M pixels randomly selected from the image; where M is greater than 1 / 3NM, and NM represents the number of all pixels in the image.

[0055] In the above-mentioned implementation mode, since the facial images acquired in the cable tunnel environment are easily affected by the indoor white light source, which may cause backlight or reflection in the picture, a preprocessing technical solution for the facial images of the accessing user is proposed based on the image processing unit. By first preprocessing the acquired facial images, the acquired facial images can be adaptively judged and correspondingly adjusted for abnormal lighting conditions in the facial images, which helps to improve the clarity of the image. Among them, the acquired face image is first converted to the HSV color space, and based on the obtained brightness channel sub-image as the basis for brightness enhancement, the proposed illumination feature component calculation function is used to calculate the illumination feature component of each pixel in the image, so as to reflect the actual illumination conditions of each position in the image. Based on the obtained brightness feature component of each pixel, the brightness influence value of each feature position in the image is further detected, and the reflection or backlight in the image is adaptively judged based on the obtained brightness influence value. When backlight or reflection appears in the image (affecting the image), the position of abnormal brightness in the image is first suppressed to reduce the influence of abnormal illumination on the image. For the image with abnormal illumination eliminated, the overall brightness level of the image is re-improved by overall balancing, so as to improve the overall clarity of the image. Furthermore, for the abnormal illumination image, the feature part is easily affected by abnormal illumination and thus is not obvious. After improving the overall brightness level of the image, the detail part of the feature part in the image is further improved to improve the representation level and clarity of the feature information in the image. The clarity of the whole image and its details is effectively improved, which indirectly improves the reliability of further identification and authentication based on facial images. After analyzing the general image without lighting anomalies, the overall brightness level of the image is adjusted to improve the overall clarity of the image, which also helps to improve the reliability of further identification and authentication based on facial images.

[0056] Preferably, the joint analysis unit includes a first strategy analysis unit; wherein, The first strategy analysis unit is used to generate a first control strategy for closing the access control for general access control nodes when an abnormality occurs in the environmental security analysis results; and further generate a second control strategy for displaying prompt information for each general access control node according to the location where the security abnormality occurs; wherein the prompt information includes abnormal prompt information and escape direction prompt information.

[0057] In one scenario, when an analysis result of an environmental anomaly appears in area A of a cable tunnel, the general access control equipment is controlled to be adjusted to a closed state to prevent the abnormal situation from spreading. At the same time, according to the location of the abnormal area A, the escape routes of each access control location are analyzed, where the escape routes are planned as far away from area A as possible and the nearest escape exit is selected. According to the obtained escape route, the escape route instructions are transmitted to the corresponding access control node (for example, the overall escape route map is displayed or the evacuation direction that should be selected at the current location is indicated). The above method can dynamically analyze the escape routes of each location according to the location where the abnormal environment occurs and transmit the corresponding route instructions to the on-site access control equipment for display when an environmental anomaly occurs. It can guide on-site personnel to quickly select the correct escape route for evacuation in a closed environment, thereby improving the safety of personnel in abnormal situations.

[0058] Preferably, the first strategy analysis unit further includes: When an abnormality occurs in the environmental safety analysis result, a third control strategy for triggering an alarm is generated for the alarm device.

[0059] When an abnormality is found in the environmental analysis results, a corresponding control instruction is also generated to the management terminal or alarm device so that the on-site manager can promptly understand the occurrence of abnormal conditions on site and take corresponding measures for the abnormal conditions.

[0060] Preferably, the joint analysis unit includes a second strategy analysis unit; wherein, The second strategy analysis unit is used to further judge the personnel safety analysis result when the environmental safety analysis result is normal, and to generate a fourth control strategy for closing and locking the access control for the security access control node when the personnel safety analysis result is abnormal.

[0061] In another case, when there is no environmental abnormality at the cable site but an abnormal person breaks in, the security access control will be locked to prevent the abnormal person from entering and exiting at will, and relevant personnel will be assigned to the site to deal with the abnormal person. This can effectively prevent the intrusion of abnormal people and effectively protect the safety of equipment and property in the cable tunnel.

[0062] Preferably, the access control module includes a command generation unit and a remote control unit; The instruction generation unit is used to generate control instructions for the access control system at the cable tunnel site according to the obtained control strategy of each access control node, wherein the control instructions include information of the access control system to be controlled, and switch control instructions and display control instructions corresponding to the access control system; The remote control instructions are used to remotely control the corresponding access control system at the cable tunnel site according to the generated control instructions, so that the access control system changes to a specified state.

[0063] The system can remotely control the access control equipment at the cable site through the access control control module, where the instruction generation unit can generate corresponding control instructions for different situations according to preset rules and strategies. By remotely transmitting the control instructions to the access control equipment at the cable site, the real-time status of the access control equipment can be controlled to complete the corresponding control tasks.

[0064] At the same time, in another embodiment, the present invention is based on the above-mentioned cable tunnel access control remote control system based on digital twin, and further proposes a control method of the cable tunnel access control remote control system, comprising the following steps: The digital twin module generates a monitoring model of the cable tunnel, where the monitoring model includes the spatial structural characteristics of the cable tunnel and the characteristics of the monitoring nodes contained in each space, where the monitoring nodes include environmental monitoring nodes and access control nodes; The field monitoring module collects the field monitoring data of the cable tunnel and transmits the collected field monitoring data back to the digital twin module, so that the digital twin module integrates the received field monitoring data into the corresponding monitoring nodes of the monitoring model and updates the monitoring model; the field monitoring data includes environmental monitoring data and access control monitoring data; The intelligent analysis module performs environmental safety analysis and personnel safety analysis based on the on-site monitoring data in the monitoring model, obtains environmental safety analysis results and personnel safety analysis results, and performs joint analysis based on the obtained environmental safety analysis results and personnel safety analysis results to obtain the control strategy of the corresponding access control node; The access control module remotely controls the access control system at the cable tunnel site according to the control strategies of each access control node, including controlling the switch status of the access control system and the displayed information.

[0065] At the same time, the proposed control method of the cable tunnel access control remote control system further includes the technical solutions included in the above-mentioned embodiments, which will not be repeated here in the present invention.

[0066] It should be noted that each functional unit / module in each embodiment of the present invention may be integrated into one processing unit / module, or each unit / module may exist physically separately, or two or more units / modules may be integrated into one unit / module. The above-mentioned integrated unit / module may be implemented in the form of hardware or in the form of software functional unit / module.

[0067] Through the description of the above implementation modes, it can be clearly understood by those skilled in the art that the embodiments described herein can be implemented in hardware, software, firmware, middleware, code or any appropriate combination thereof. For hardware implementation, the processor can be implemented in one or more of the following units: an application specific integrated circuit (ASIC), a digital signal processor (DSP), a digital signal processing device (DSPD), a programmable logic device (PLD), a field programmable gate array (FPGA), a processor, a controller, a microcontroller, a microprocessor, other electronic units designed to implement the functions described herein or a combination thereof. For software implementation, part or all of the processes of the embodiment can be completed by instructing the relevant hardware through a computer program. When implemented, the above program can be stored in a computer-readable medium or transmitted as one or more instructions or codes on a computer-readable medium. Computer-readable media include computer storage media and communication media, wherein the communication media include any medium that facilitates the transmission of computer programs from one place to another. The storage medium can be any available medium that can be accessed by a computer. Computer-readable media can include, but are not limited to, RAM, ROM, EEPROM, CD-ROM or other optical disk storage, disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention, rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should analyze that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. A cable tunnel access control remote control system based on digital twin, characterized in that: include: Digital twin module, on-site monitoring module, intelligent analysis module and access control module; among them, The digital twin module is used to generate a monitoring model for the cable tunnel, where the monitoring model includes the spatial structural characteristics of the cable tunnel and the characteristics of the monitoring nodes contained in each space, where the monitoring nodes include environmental monitoring nodes and access control nodes; The field monitoring module is set up in the cable tunnel site to collect the field monitoring data of the cable tunnel and transmit the collected field monitoring data back to the digital twin module, so that the digital twin module integrates the received field monitoring data into the corresponding monitoring node of the monitoring model and updates the monitoring model; the field monitoring data includes environmental monitoring data and access control monitoring data; The intelligent analysis module is used to perform environmental safety analysis and personnel safety analysis based on the on-site monitoring data in the monitoring model, obtain environmental safety analysis results and personnel safety analysis results, and perform joint analysis based on the obtained environmental safety analysis results and personnel safety analysis results to obtain the control strategy of the corresponding access control node; The access control module is used to remotely control the access control system at the cable tunnel site according to the control strategies of each access control node, including controlling the switch status of the access control system and the displayed information.

2. According to claim 1, a cable tunnel access control remote control system based on digital twins is characterized in that: The digital twin module includes a model building unit and an interface unit; The model setting unit is used to build a monitoring model according to the spatial structure of the cable tunnel based on the digital twin technology, and to set corresponding environmental monitoring nodes and access control nodes in the monitoring model according to the on-site layout of the cable tunnel; The interface unit is used to establish a communication connection with the field monitoring module, receive the field monitoring data sent back by the monitoring node in real time, and integrate the acquired field monitoring data into the corresponding monitoring node of the monitoring model.

3. According to claim 2, a cable tunnel access control remote control system based on digital twins is characterized in that: The on-site monitoring module includes a sensor unit, an access control unit and a gateway unit; among them, The sensor unit is used to collect environmental monitoring data at the cable tunnel site and transmit the collected environmental monitoring data to the gateway unit, where the environmental monitoring data includes temperature, humidity, dust concentration, and harmful gas concentration; The access control unit is used to collect access control monitoring data at the cable tunnel site and transmit the acquired access control monitoring data to the gateway unit, where the access control monitoring data includes the switch data of the access control and the identity information of the personnel passing through the access control at the site; The gateway unit is communicatively connected to the digital twin module and is used to transmit the acquired environmental monitoring data and access control monitoring data to the digital twin module.

4. According to claim 3, a cable tunnel access control remote control system based on digital twins is characterized in that: Access control includes security access control and general access control, among which the security access control is set at the main entrance and exit of the cable tunnel; Generally, the access control is set inside the cable tunnel to divide the cable tunnel into different spaces. The access control is generally provided with a display unit, which is used to display corresponding information according to the received control instructions; the access control nodes in the monitoring model include general access control nodes and security access control nodes.

5. According to the digital twin-based cable tunnel access control remote control system of claim 3, it is characterized in that: The intelligent analysis module includes an environmental analysis unit, a personnel analysis unit and a joint analysis unit; The environmental analysis unit is used to perform environmental safety analysis based on the environmental monitoring data of each monitoring node in the monitoring model to obtain environmental safety analysis results; The personnel analysis unit is used to perform personnel safety analysis based on the personnel identity information obtained by each access control node in the monitoring model to obtain personnel safety analysis results, wherein the personnel safety analysis results include abnormal personnel analysis results and the current personnel retention situation in each area; The joint analysis unit is used to perform joint analysis based on the obtained environmental safety analysis results and personnel safety analysis results to obtain the control strategy of the corresponding access control node.

6. A cable tunnel access control remote control system based on digital twin according to claim 5, characterized in that: The environmental monitoring unit includes: According to the acquired environmental monitoring data, the environmental monitoring data is compared and analyzed with the preset standard threshold value. When the environmental monitoring data obtained by the comparison and analysis exceeds the corresponding standard threshold value, the environmental safety analysis result is obtained as abnormal; The personnel analysis unit includes: Authentication is performed based on the obtained personnel identity information. When the personnel identity information is a whitelist personnel, the personnel security analysis result is normal; otherwise, the personnel security analysis result is abnormal.

7. According to claim 5, a cable tunnel access control remote control system based on digital twins is characterized in that: The access control unit includes a state acquisition unit and an image acquisition unit; wherein, The status acquisition unit is used to obtain the switch data of the access control; The image acquisition unit is used to obtain the facial image of the visitor who passes through the access control or requests to pass through the access control, and generates the visitor access information based on the acquired facial image of the visitor, and transmits the visitor access information to the digital twin module, which then provides feedback in the monitoring model; The personnel analysis unit is also used to extract the facial image of the accessing personnel according to the obtained personnel access information, and perform personnel identity recognition according to the obtained facial image of the accessing personnel to obtain the identity information of the accessing personnel, and further perform authority recognition according to the obtained personnel identity information to obtain the personnel security analysis result; when the personnel identity information cannot be recognized or the authority corresponding to the personnel identity information is insufficient, the personnel analysis result is obtained as abnormal; Based on the identified personnel identity information, the current location of the visiting personnel is further recorded to obtain the personnel retention situation in each area.

8. The cable tunnel access control remote control system based on digital twin according to claim 5 is characterized in that: The joint analysis unit includes a first strategy analysis unit and / or a second strategy analysis unit; wherein, The first strategy analysis unit is used to generate a first control strategy for closing the access control for the general access control node when an abnormality occurs in the environmental security analysis result; and further generate a second control strategy for displaying prompt information for each general access control node according to the location where the security abnormality occurs; wherein the prompt information includes abnormality prompt information and departure direction prompt information; The second strategy analysis unit is used to further judge the personnel safety analysis result when the environmental safety analysis result is normal, and to generate a fourth control strategy for closing and locking the access control for the security access control node when the personnel safety analysis result is abnormal.

9. A cable tunnel access control remote control system based on digital twin according to claim 5, characterized in that: The access control module includes a command generation unit and a remote control unit; The instruction generation unit is used to generate control instructions for the access control system at the cable tunnel site according to the obtained control strategy of each access control node, wherein the control instructions include information of the access control system to be controlled, and switch control instructions and display control instructions corresponding to the access control system; The remote control instructions are used to remotely control the corresponding access control system at the cable tunnel site according to the generated control instructions, so that the access control system changes to a specified state.

10. A control method for a cable tunnel access control remote control system based on a digital twin as claimed in any one of claims 1 to 9, characterized in that: include: The digital twin module generates a monitoring model of the cable tunnel, where the monitoring model includes the spatial structural characteristics of the cable tunnel and the characteristics of the monitoring nodes contained in each space, where the monitoring nodes include environmental monitoring nodes and access control nodes; The field monitoring module collects the field monitoring data of the cable tunnel and transmits the collected field monitoring data back to the digital twin module, so that the digital twin module integrates the received field monitoring data into the corresponding monitoring nodes of the monitoring model and updates the monitoring model; the field monitoring data includes environmental monitoring data and access control monitoring data; The intelligent analysis module performs environmental safety analysis and personnel safety analysis based on the on-site monitoring data in the monitoring model, obtains environmental safety analysis results and personnel safety analysis results, and performs joint analysis based on the obtained environmental safety analysis results and personnel safety analysis results to obtain the control strategy of the corresponding access control node; The access control module remotely controls the access control system at the cable tunnel site according to the control strategies of each access control node, including controlling the switch status of the access control system and the displayed information.

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