An intelligent adaptive foundation pit air film monitoring and automatic repair system

Abstract

The present invention relates to the technical field of foundation pit air film management, and in particular to an intelligent adaptive foundation pit air film monitoring and automatic repair system, comprising a service management platform, an information management unit, an internal pressure control unit, an air supply supervision unit, a status assessment unit, a risk assessment unit and a management response unit; the present invention analyzes from the air supply perspective of a target foundation pit air film so as to timely manage and repair air supply equipment with abnormal risks, and further analyzes from the internal pressure perspective of the target foundation pit air film under the premise of normal air supply to achieve automatic repair of the internal pressure and improve the safety of use of the target foundation pit air film, and divides the potential damage risks of the target foundation pit air film into regions by means of information feedback, and performs targeted regional management and repair according to the feedback information, and conducts in-depth combined analysis of the internal pressure and regional risks of the target foundation pit air film to reduce the potential rupture risk of the target foundation pit air film.

Description

Technical Field

[0001] The present invention relates to the technical field of foundation pit air film management, and in particular to an intelligent adaptive foundation pit air film monitoring and automatic repairing system. Background Art

[0002] The core of the foundation pit air film technology is to use the pressure difference between inside and outside to support the entire structure, and use the mesh structure rigging to fix it, fix the membrane material to the periphery of the ground foundation structure. During operation, the indoor air pressure is raised to a certain pressure through the air supply system, so that a pressure difference is generated inside and outside the air film to resist external forces. This structure does not require any beams or columns, so a larger completely cleared building space can be obtained, and at the same time, noise is effectively isolated and dust spillage is reduced;

[0003] However, in the prior art, it is impossible to conduct safety supervision on the air supply equipment of the foundation pit air film, which is not conducive to timely management and repair and adjustment of the air supply equipment with abnormal risks, thereby reducing the safety of the use of the foundation pit air film, and it is impossible to supervise and adjust the internal pressure of the foundation pit air film, so that it is impossible to automatically repair the internal pressure, resulting in an increase in the risk of abnormal internal pressure of the foundation pit air film, and it is impossible to understand the risk situation of each area of ​​the foundation pit air film and the use of the internal pressure, which is not conducive to targeted regional management and repair, and reduces the management efficiency of the foundation pit air film;

[0004] In view of the above technical defects, a solution is now proposed. Summary of the invention

[0005] The purpose of the present invention is to provide an intelligent adaptive foundation pit air film monitoring and automatic repair system to solve the technical defects mentioned above. The present invention analyzes from the perspective of air supply of the target foundation pit air film so as to timely manage and repair the air supply equipment with abnormal risks. Under the premise of normal air supply, the present invention further analyzes from the perspective of internal pressure of the target foundation pit air film to understand whether the internal pressure in each area of ​​the target foundation pit air film is normal, so as to adjust the internal pressure of the target foundation pit air film to achieve automatic repair of the internal pressure, so as to improve the safety of the use of the target foundation pit air film. The potential damage risk of the target foundation pit air film is divided into regions by means of information feedback, and then the target foundation pit air film is managed and repaired in a targeted manner according to the feedback information, and the internal pressure of the target foundation pit air film and regional risks are combined for in-depth analysis to avoid the increase of potential rupture risk of the target foundation pit air film, so as to improve the safety of the target foundation pit air film.

[0006] The object of the present invention can be achieved by the following technical solutions: an intelligent adaptive foundation pit air film monitoring and automatic repair system, including a service management platform, an information management unit, an internal pressure control unit, an air supply supervision unit, a state assessment unit, a risk assessment unit and a management response unit;

[0007] The information management unit is used to collect air supply status data and internal pressure data of the target foundation pit air film, and send the air supply status data and internal pressure data to the air supply supervision unit and the status evaluation unit respectively. After receiving the air supply status data, the air supply supervision unit immediately performs air supply safety supervision evaluation analysis on the air supply status data, and compares and analyzes the obtained air supply abnormality evaluation coefficient to obtain a normal signal and an abnormal signal;

[0008] After receiving the internal pressure data and the normal signal, the state evaluation unit immediately performs air pressure safety supervision feedback analysis on the internal pressure data, compares and analyzes the obtained stable pressure duration, obtains a feedback signal and an alarm signal, and when a feedback signal is generated, further compares and analyzes the dynamic duration to obtain a stable signal and an alarm signal;

[0009] The risk assessment unit is used to collect the appearance feature image and standard feature image of the target foundation pit air film, and perform regional damage risk supervision analysis, and send the obtained vulnerable area and normal area to the management response unit;

[0010] The internal pressure control unit is used to collect the pressure difference impact information of each vulnerable area, perform risk prediction and supervision operations on the pressure difference impact information, compare and analyze the obtained air film risk coefficient, and send the obtained repair signal to the management response unit.

[0011] Preferably, the air supply safety supervision assessment and analysis process of the air supply supervision unit is as follows:

[0012] T1: The use period of the target foundation pit air film is collected and set as the time threshold, and the time threshold is divided into k sub-time periods, where k is a natural number greater than zero, and the air supply status data of the target foundation pit air film air supply equipment in each sub-time period is obtained. The air supply status data represents the air supply volume and the operating energy consumption value, and then the ratio between the air supply volume and the operating energy consumption value, and the ratio between the air supply volume and the operating energy consumption value is set as the air supply status evaluation coefficient;

[0013] T2: Compare and analyze the air supply state assessment coefficient with the stored preset air supply state assessment coefficient threshold, and set the ratio between the number of sub-time periods corresponding to which the air supply state assessment coefficient is less than the preset air supply state assessment coefficient threshold and the number of sub-time periods corresponding to which the air supply state assessment coefficient is greater than or equal to the preset air supply state assessment coefficient threshold as the air supply abnormality assessment coefficient;

[0014] T3: Compare and analyze the air supply abnormality assessment coefficient with the preset air supply abnormality assessment coefficient threshold value entered and stored internally: if the ratio between the air supply abnormality assessment coefficient and the preset air supply abnormality assessment coefficient threshold value is less than 1, a normal signal is generated; if the ratio between the air supply abnormality assessment coefficient and the preset air supply abnormality assessment coefficient threshold value is greater than or equal to 1, an abnormal signal is generated.

[0015] Preferably, the air pressure safety supervision feedback analysis process of the state evaluation unit is as follows:

[0016] The target foundation pit air film is divided into g sub-region blocks, where g is a natural number greater than zero, and the internal air pressure value change characteristic curve of the target foundation pit air film of each sub-region block within the time threshold is obtained, and the internal air pressure value change characteristic curve is compared and analyzed with the preset internal air pressure value range curve, and the duration corresponding to the line segment of the internal air pressure value change characteristic curve belonging to the preset internal air pressure value range curve is set as the pressure stabilization duration;

[0017] Compare and analyze the voltage stabilization time with the preset voltage stabilization time threshold stored in the internal storage:

[0018] If the voltage stabilization time is greater than or equal to the preset voltage stabilization time threshold, a feedback signal is generated;

[0019] If the voltage stabilization time is less than the preset voltage stabilization time threshold, an alarm signal is generated.

[0020] Preferably, when the state evaluation unit generates a feedback signal:

[0021] The time corresponding to the maximum peak value and the minimum trough value is obtained from the internal air pressure value change characteristic curve, and the difference between the time corresponding to the maximum peak value and the time corresponding to the minimum trough value is set as the dynamic duration, and the dynamic duration is compared and analyzed with the preset dynamic duration threshold stored in the internal recording:

[0022] If the dynamic duration is greater than the preset dynamic duration threshold, a stable signal is generated;

[0023] If the dynamic duration is less than or equal to the preset dynamic duration threshold, an early warning signal is generated.

[0024] Preferably, the regional damage risk supervision analysis process of the risk assessment unit is as follows:

[0025] TT1: Obtain the appearance feature image and standard feature image of the target foundation pit air film in each sub-region block, compare and analyze the appearance feature image and the standard feature image, and then obtain the difference value between the appearance feature image and the standard feature image, and set the difference value between the appearance feature image and the standard feature image as the damage risk assessment coefficient;

[0026] TT2: Obtain the basic information of the target foundation pit air film, including the production date and the number of times it has been used. Then, the duration from the production date to the current time is obtained and set as the commissioning assessment value. At the same time, the working hours corresponding to each number of times of use are obtained, and the sum of the working hours is set as the operation cycle value.

[0027] TT3: Label the damage risk assessment coefficient, commissioning assessment value, and operation cycle value as SS, TS, and YZ, respectively, and substitute the damage risk assessment coefficient SS, commissioning assessment value TS, and operation cycle value YZ into the formula The damage probability assessment value of each sub-region block is obtained, where a1 is the preset correction factor coefficient, a1 is greater than zero, and S is the damage probability assessment value of each sub-region block. The damage probability assessment value S is compared and analyzed with the preset damage probability assessment value threshold value stored in the internal input:

[0028] If the damage probability assessment value is greater than or equal to the preset damage probability assessment value threshold, the corresponding sub-region block is set as a vulnerable region;

[0029] If the damage probability assessment value is less than the preset damage probability assessment value threshold, the corresponding sub-region block is set as a normal region.

[0030] Preferably, the risk prediction and supervision operation process of the internal pressure control unit is as follows:

[0031] The pressure difference influence information of each vulnerable area in each sub-time period is obtained, where the pressure difference influence information indicates the maximum value of the internal and external air pressure difference, and the maximum value of the internal and external air pressure difference of each vulnerable area in each sub-time period is set as the vulnerable pressure difference peak value;

[0032] A rectangular coordinate system is established with the number of sub-time periods as the X-axis and the vulnerable pressure difference peak value as the Y-axis, a vulnerable pressure difference peak value curve is drawn by plotting points, and a set vulnerable pressure difference peak value curve is drawn in the coordinate system, and then the time length corresponding to the line segment of the vulnerable pressure difference peak value curve above the set vulnerable pressure difference peak value curve is obtained, and it is set as the air film risk coefficient;

[0033] Compare and analyze the air film risk factor with the preset air film risk factor threshold value stored in the internal storage:

[0034] If the ratio between the air film risk coefficient and the preset air film risk coefficient threshold is less than 1, no signal is generated;

[0035] If the ratio between the air film risk coefficient and the preset air film risk coefficient threshold is greater than 1, a repair signal is generated.

[0036] The beneficial effects of the present invention are as follows:

[0037] (1) The present invention analyzes from the perspective of air supply of the target foundation pit air film so as to timely manage and repair the air supply equipment with abnormal risks to ensure the air supply stability of the target foundation pit air film, and at the same time helps to reduce the risk of the air supply equipment affecting the use of the target foundation pit air film. Under the premise of normal air supply, the present invention further analyzes from the perspective of the internal pressure of the target foundation pit air film to understand whether the internal pressure in each area of ​​the target foundation pit air film is normal. At the same time, the internal pressure changes are monitored in depth to avoid a surge or decrease in internal pressure, so as to timely adjust the air supply volume of the air supply equipment and adjust the internal pressure of the target foundation pit air film to achieve automatic repair of the internal pressure, thereby improving the safety of the use of the target foundation pit air film;

[0038] (2) The present invention divides the target foundation pit air membrane into regions according to the potential damage risk by means of information feedback, and then performs targeted regional management and repair of the target foundation pit air membrane according to the feedback information to reduce the damage risk of the target foundation pit air membrane, and conducts an in-depth combined analysis of the internal pressure and regional risk of the target foundation pit air membrane, so as to carry out targeted repair and internal pressure adjustment of the target foundation pit air membrane according to the feedback information, thereby avoiding an increase in the potential rupture risk of the target foundation pit air membrane and improving the safety of the target foundation pit air membrane. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The present invention will be further described below in conjunction with the accompanying drawings;

[0040] Figure 1 It is a flowchart of the system of the present invention;

[0041] Figure 2 This is a local analysis diagram of Example 1 of the present invention. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] Embodiment 1:

[0044] See also Figure 1 to Figure 2As shown, the present invention is an intelligent adaptive foundation pit air film monitoring and automatic repair system, including a service management platform, an information management unit, an internal pressure control unit, an air supply supervision unit, a state assessment unit, a risk assessment unit and a management response unit, the service management platform is in a one-way communication connection with the information management unit and the internal pressure control unit, the information management unit is in a one-way communication connection with the air supply supervision unit and the state assessment unit, the air supply supervision unit is in a one-way communication connection with the state assessment unit and the management response unit, the state assessment unit is in a one-way communication connection with the risk assessment unit and the management response unit, the risk assessment unit is in a one-way communication connection with the internal pressure control unit and the management response unit, and the internal pressure control unit is in a one-way communication connection with the management response unit;

[0045] When the service management platform generates a supervision instruction, it sends the supervision instruction to the information management unit and the internal pressure control unit. After receiving the supervision instruction, the information management unit immediately collects the air supply status data and internal pressure data of the target foundation pit air film, and sends the air supply status data and internal pressure data to the air supply supervision unit and the status evaluation unit respectively. After receiving the air supply status data, the air supply supervision unit immediately performs air supply safety supervision evaluation and analysis on the air supply status data to determine whether the air supply equipment of the target foundation pit air film is working normally, so as to timely manage and repair the air supply equipment with abnormal risks, so as to ensure the air supply stability of the target foundation pit air film, and at the same time help reduce the risk of air supply equipment affecting the use of the target foundation pit air film. The specific air supply safety supervision evaluation and analysis process is as follows:

[0046] The use period of the target foundation pit air film is collected and set as the time threshold, and the time threshold is divided into k sub-time periods, where k is a natural number greater than zero, and the air supply status data of the target foundation pit air film air supply equipment in each sub-time period is obtained. The air supply status data represents the air supply volume and the operating energy consumption value, and then the ratio between the air supply volume and the operating energy consumption value, and the ratio between the air supply volume and the operating energy consumption value is set as the air supply status evaluation coefficient. It should be noted that the larger the value of the air supply status evaluation coefficient, the smaller the failure risk of the target foundation pit air film air supply equipment;

[0047] The air supply state assessment coefficient is compared and analyzed with the stored preset air supply state assessment coefficient threshold, and the ratio between the number of sub-time periods corresponding to which the air supply state assessment coefficient is less than the preset air supply state assessment coefficient threshold and the number of sub-time periods corresponding to which the air supply state assessment coefficient is greater than or equal to the preset air supply state assessment coefficient threshold is set as the air supply abnormality assessment coefficient. It should be noted that the air supply abnormality assessment coefficient is an influencing parameter reflecting the state of the air supply equipment. The larger the value of the air supply abnormality assessment coefficient, the greater the risk of abnormal air film in the target foundation pit.

[0048] Compare and analyze the abnormal air supply evaluation coefficient with the preset abnormal air supply evaluation coefficient threshold value stored in the internal data entry:

[0049] If the ratio between the air supply abnormality assessment coefficient and the preset air supply abnormality assessment coefficient threshold is less than 1, a normal signal is generated and sent to the state assessment unit;

[0050] If the ratio between the air supply abnormality assessment coefficient and the preset air supply abnormality assessment coefficient threshold is greater than or equal to 1, an abnormal signal is generated and sent to the management response unit. After receiving the abnormal signal, the management response unit immediately performs the preset warning operation corresponding to the abnormal signal, that is, the preset warning operation corresponding to the abnormal signal is "the alarm light flashes red", and then manages and repairs the target foundation pit air film air supply equipment according to the feedback information, thereby improving the operational safety of the air supply equipment, and at the same time helping to reduce the risk of the air supply equipment affecting the use of the target foundation pit air film, so as to improve the use safety of the target foundation pit air film;

[0051] After receiving the internal pressure data and the normal signal, the state assessment unit immediately conducts an air pressure safety supervision feedback analysis on the internal pressure data, that is, it analyzes from the perspective of the internal pressure of the target foundation pit air film to understand whether the internal pressure in each area of ​​the target foundation pit air film is normal. At the same time, it conducts in-depth supervision on the changes in internal pressure to avoid a surge or sharp decrease in internal pressure, so as to improve the safety of the use of the target foundation pit air film. The specific air pressure safety supervision feedback analysis process is as follows:

[0052] The target foundation pit air film is divided into g sub-region blocks, where g is a natural number greater than zero, and the internal air pressure value change characteristic curve of the target foundation pit air film of each sub-region block within the time threshold is obtained. The internal air pressure value change characteristic curve is compared and analyzed with the preset internal air pressure value range curve, and the duration corresponding to the line segment of the internal air pressure value change characteristic curve belonging to the preset internal air pressure value range curve is set as the pressure stabilization duration. It should be noted that the pressure stabilization duration is an influencing parameter reflecting the internal pressure state of the target foundation pit air film area;

[0053] Compare and analyze the voltage stabilization time with the preset voltage stabilization time threshold stored in the internal storage:

[0054] If the voltage stabilization time is greater than or equal to the preset voltage stabilization time threshold, a feedback signal is generated;

[0055] If the voltage stabilization time is less than the preset voltage stabilization time threshold, an alarm signal is generated and sent to the management response unit. After receiving the alarm signal, the management response unit immediately performs the preset warning operation corresponding to the alarm signal, that is, the preset warning operation corresponding to the alarm signal is "the alarm light is always yellow", and then adjusts the pressure of the target foundation pit air film according to the feedback information to ensure the stability and safety of the internal pressure of the target foundation pit air film;

[0056] When the feedback signal is generated, the time corresponding to the maximum peak value and the minimum trough value is obtained from the internal air pressure value change characteristic curve, and the difference between the time corresponding to the maximum peak value and the time corresponding to the minimum trough value is set as the dynamic duration, and the dynamic duration is compared and analyzed with the preset dynamic duration threshold stored in the internal recording:

[0057] If the dynamic duration is greater than a preset dynamic duration threshold, a stabilization signal is generated and sent to the risk assessment unit;

[0058] If the dynamic duration is less than or equal to the preset dynamic duration threshold, a warning signal is generated and sent to the management response unit. After receiving the warning signal, the management response unit immediately performs the preset warning operation corresponding to the warning signal, that is, the preset warning operation corresponding to the warning signal is "the alarm light is always red and yellow", and then adjusts the pressure and manages and repairs the target foundation pit air film according to the feedback information, and conducts targeted management of the area corresponding to the dynamic duration less than or equal to the preset dynamic duration threshold to ensure the safety of the use of the target foundation pit air film.

[0059] Embodiment 2:

[0060] When a stable signal is generated, the risk assessment unit conducts regional damage risk supervision analysis from the perspective of potential risks, and collects the appearance feature image and standard feature image of the target foundation pit air film at the same time, so as to divide the risks according to the appearance and use of each area. The specific regional damage risk supervision analysis process is as follows:

[0061] The appearance feature image and the standard feature image of the target foundation pit air film in each sub-region block are obtained, and the appearance feature image and the standard feature image are compared and analyzed to obtain the difference value between the appearance feature image and the standard feature image, and the difference value between the appearance feature image and the standard feature image is set as the damage risk assessment coefficient. It should be noted that the larger the value of the damage risk assessment coefficient is, the greater the damage risk of the target foundation pit air film is;

[0062] The basic information of the target foundation pit air film is obtained, including the production date, the number of times used, etc., and then the time between the production date and the current time is obtained, and it is set as the commissioning assessment value. At the same time, the working hours corresponding to each number of times used are obtained, and the sum of the working hours is set as the operation cycle value. It should be noted that the larger the values ​​of the commissioning assessment value and the operation cycle value, the greater the potential damage risk of the target foundation pit air film;

[0063] The damage risk assessment coefficient, commissioning assessment value and operation cycle value are labeled SS, TS and YZ respectively, and the damage risk assessment coefficient SS, commissioning assessment value TS and operation cycle value YZ are substituted into the formula The damage probability assessment value of each sub-region block is obtained, where a1 is the preset correction factor coefficient, a1 is greater than zero, and S is the damage probability assessment value of each sub-region block. The damage probability assessment value S is compared and analyzed with the preset damage probability assessment value threshold value stored in the internal input:

[0064] If the damage probability assessment value is greater than or equal to the preset damage probability assessment value threshold, the corresponding sub-region block is set as a vulnerable region;

[0065] If the damage probability assessment value is less than the preset damage probability assessment value threshold, the corresponding sub-region block is set as a normal region, and the vulnerable region and the normal region are sent to the management response unit. After receiving the vulnerable region and the normal region, the management response unit immediately marks the numbers corresponding to the vulnerable region and the normal region, that is, the numbers corresponding to the vulnerable region are compared to red, and the numbers corresponding to the normal region are compared to green, and then the target foundation pit air film is managed and repaired in a targeted manner according to the feedback information to reduce the risk of damage to the target foundation pit air film;

[0066] After receiving the supervision instruction, the internal pressure control unit immediately collects the pressure difference impact information of each vulnerable area and performs risk prediction and supervision operations on the pressure difference impact information, so as to remind the operation and management personnel to strengthen the supervision of the vulnerable areas in the target foundation pit air film to avoid the increase of the potential rupture risk of the target foundation pit air film. The specific risk prediction and supervision operation process is as follows:

[0067] The pressure difference influence information of each vulnerable area in each sub-time period is obtained. The pressure difference influence information represents the maximum value of the internal and external air pressure difference. The maximum value of the internal and external air pressure difference of each vulnerable area in each sub-time period is set as the vulnerable pressure difference peak value. It should be noted that the vulnerable pressure difference peak value reflects the quantitative data of the excessive potential rupture risk of the target foundation pit air film, which urgently needs to be managed and repaired, so as to ensure the normal use of the target foundation pit air film and the stability of the internal air pressure;

[0068] A rectangular coordinate system is established with the number of sub-time periods as the X-axis and the vulnerable pressure difference peak value as the Y-axis. The vulnerable pressure difference peak value curve is drawn by plotting points, and the set vulnerable pressure difference peak value curve is drawn in the coordinate system, so as to obtain the time length corresponding to the line segment of the vulnerable pressure difference peak value curve above the set vulnerable pressure difference peak value curve, and set it as the air film risk coefficient. It should be noted that the larger the value of the air film risk coefficient, the greater the risk of rupture of the vulnerable area, and the smaller the safety of the target foundation pit air film;

[0069] Compare and analyze the air film risk factor with the preset air film risk factor threshold value stored in the internal storage:

[0070] If the ratio between the air film risk coefficient and the preset air film risk coefficient threshold is less than 1, no signal is generated;

[0071] If the ratio between the air film risk coefficient and the preset air film risk coefficient threshold is greater than or equal to 1, a repair signal is generated and sent to the management response unit. After receiving the repair signal, the management response unit immediately marks the number of the vulnerable area corresponding to the repair signal with the word "repair", and performs targeted repairs on the target foundation pit air film according to the feedback information to avoid an increase in the potential risk of rupture of the target foundation pit air film, so as to reduce the risk of damage to the target foundation pit air film;

[0072] In summary, the present invention analyzes from the perspective of air supply of the target foundation pit air film so as to timely manage and repair the air supply equipment with abnormal risks to ensure the air supply stability of the target foundation pit air film, and at the same time helps to reduce the risk of the air supply equipment affecting the use of the target foundation pit air film. Under the premise of normal air supply, further analysis is performed from the perspective of the internal pressure of the target foundation pit air film to understand whether the internal pressure in each area of ​​the target foundation pit air film is normal. At the same time, the internal pressure changes are monitored in depth to avoid a surge or decrease in internal pressure, so as to timely adjust the air supply volume of the air supply equipment to the target foundation pit. The internal pressure of the pit air film is adjusted to achieve automatic repair of the internal pressure, so as to improve the safety of the use of the target foundation pit air film. The potential damage risk of the target foundation pit air film is divided into regions through information feedback, and then the target foundation pit air film is managed and repaired in a targeted manner according to the feedback information to reduce the damage risk of the target foundation pit air film. In addition, an in-depth analysis of the internal pressure and regional risks of the target foundation pit air film is conducted, so as to carry out targeted repairs and internal pressure adjustments of the target foundation pit air film according to the feedback information, so as to avoid an increase in the potential rupture risk of the target foundation pit air film and improve the safety of the target foundation pit air film.

[0073] The threshold is set to facilitate comparison. The size of the threshold depends on the amount of sample data and the number of bases set by technicians in this field for each group of sample data; as long as it does not affect the proportional relationship between the parameter and the quantized value.

[0074] The above formulas are obtained by collecting a large amount of data for software simulation and selecting a formula that is close to the actual value. The coefficients in the formula are set by technical personnel in this field according to actual conditions. The above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited to this. Any technical personnel familiar with the technical field within the technical scope disclosed by the present invention, according to the technical solution and the inventive concept of the present invention, make equivalent replacement or change, which should be covered within the protection scope of the present invention.

Claims

1. An intelligent adaptive foundation pit air film monitoring and automatic repair system, characterized in that: It includes service management platform, information management unit, internal pressure control unit, air supply supervision unit, status assessment unit, risk assessment unit and management response unit; The information management unit is used to collect air supply status data and internal pressure data of the target foundation pit air film, and send the air supply status data and internal pressure data to the air supply supervision unit and the status evaluation unit respectively. After receiving the air supply status data, the air supply supervision unit immediately performs air supply safety supervision evaluation analysis on the air supply status data, and compares and analyzes the obtained air supply abnormality evaluation coefficient to obtain a normal signal and an abnormal signal; After receiving the internal pressure data and the normal signal, the state evaluation unit immediately performs air pressure safety supervision feedback analysis on the internal pressure data, compares and analyzes the obtained stable pressure duration, obtains a feedback signal and an alarm signal, and when a feedback signal is generated, further compares and analyzes the dynamic duration to obtain a stable signal and an alarm signal; The risk assessment unit is used to collect the appearance feature image and standard feature image of the target foundation pit air film, and perform regional damage risk supervision analysis, and send the obtained vulnerable area and normal area to the management response unit; The internal pressure control unit is used to collect the pressure difference influence information of each vulnerable area, perform risk prediction and supervision operations on the pressure difference influence information, compare and analyze the obtained air film risk coefficient, and send the obtained repair signal to the management response unit; The air supply safety supervision assessment and analysis process of the air supply supervision unit is as follows: T1: The use period of the target foundation pit air film is collected and set as the time threshold, and the time threshold is divided into k sub-time periods, where k is a natural number greater than zero, and the air supply status data of the target foundation pit air film air supply equipment in each sub-time period is obtained. The air supply status data represents the air supply volume and the operating energy consumption value, and then the ratio between the air supply volume and the operating energy consumption value, and the ratio between the air supply volume and the operating energy consumption value is set as the air supply status evaluation coefficient; T2: Compare and analyze the air supply state assessment coefficient with the stored preset air supply state assessment coefficient threshold, and set the ratio between the number of sub-time periods corresponding to which the air supply state assessment coefficient is less than the preset air supply state assessment coefficient threshold and the number of sub-time periods corresponding to which the air supply state assessment coefficient is greater than or equal to the preset air supply state assessment coefficient threshold as the air supply abnormality assessment coefficient; T3: Compare and analyze the air supply abnormality assessment coefficient with the preset air supply abnormality assessment coefficient threshold value recorded and stored internally: if the ratio between the air supply abnormality assessment coefficient and the preset air supply abnormality assessment coefficient threshold value is less than 1, a normal signal is generated; If the ratio between the air supply abnormality assessment coefficient and the preset air supply abnormality assessment coefficient threshold is greater than or equal to 1, an abnormality signal is generated; The air pressure safety supervision feedback analysis process of the state assessment unit is as follows: The target foundation pit air film is divided into g sub-region blocks, where g is a natural number greater than zero, and the internal air pressure value change characteristic curve of the target foundation pit air film of each sub-region block within the time threshold is obtained, and the internal air pressure value change characteristic curve is compared and analyzed with the preset internal air pressure value range curve, and the duration corresponding to the line segment of the internal air pressure value change characteristic curve belonging to the preset internal air pressure value range curve is set as the pressure stabilization duration; Compare and analyze the voltage stabilization time with the preset voltage stabilization time threshold stored in the internal storage: If the voltage stabilization time is greater than or equal to the preset voltage stabilization time threshold, a feedback signal is generated; If the voltage stabilization time is less than the preset voltage stabilization time threshold, an alarm signal is generated; When the state evaluation unit generates a feedback signal: The time corresponding to the maximum peak value and the minimum trough value is obtained from the internal air pressure value change characteristic curve, and the difference between the time corresponding to the maximum peak value and the time corresponding to the minimum trough value is set as the dynamic duration, and the dynamic duration is compared and analyzed with the preset dynamic duration threshold stored in the internal recording: If the dynamic duration is greater than the preset dynamic duration threshold, a stable signal is generated; If the dynamic duration is less than or equal to the preset dynamic duration threshold, an early warning signal is generated; The regional damage risk supervision analysis process of the risk assessment unit is as follows: TT1: Obtain the appearance feature image and standard feature image of the target foundation pit air film in each sub-region block, compare and analyze the appearance feature image and the standard feature image, and then obtain the difference value between the appearance feature image and the standard feature image, and set the difference value between the appearance feature image and the standard feature image as the damage risk assessment coefficient; TT2: Obtain the basic information of the target foundation pit air film, including the production date and the number of times it has been used. Then, the duration from the production date to the current time is obtained and set as the commissioning assessment value. At the same time, the working hours corresponding to each number of times of use are obtained, and the sum of the working hours is set as the operation cycle value. TT3: Label the damage risk assessment coefficient, commissioning assessment value, and operation cycle value as SS, TS, and YZ, respectively, and substitute the damage risk assessment coefficient SS, commissioning assessment value TS, and operation cycle value YZ into the formula The damage probability assessment value of each sub-region block is obtained, where a1 is the preset correction factor coefficient, a1 is greater than zero, and S is the damage probability assessment value of each sub-region block. The damage probability assessment value S is compared and analyzed with the preset damage probability assessment value threshold value stored in the internal input: If the damage probability assessment value is greater than or equal to the preset damage probability assessment value threshold, the corresponding sub-region block is set as a vulnerable region; If the damage probability assessment value is less than the preset damage probability assessment value threshold, the corresponding sub-region block is set as a normal region; The risk prediction and supervision operation process of the internal pressure control unit is as follows: The pressure difference influence information of each vulnerable area in each sub-time period is obtained, where the pressure difference influence information indicates the maximum value of the internal and external air pressure difference, and the maximum value of the internal and external air pressure difference of each vulnerable area in each sub-time period is set as the vulnerable pressure difference peak value; A rectangular coordinate system is established with the number of sub-time periods as the X-axis and the vulnerable pressure difference peak value as the Y-axis, a vulnerable pressure difference peak value curve is drawn by plotting points, and a set vulnerable pressure difference peak value curve is drawn in the coordinate system, and then the time length corresponding to the line segment of the vulnerable pressure difference peak value curve above the set vulnerable pressure difference peak value curve is obtained, and it is set as the air film risk coefficient; Compare and analyze the air film risk factor with the preset air film risk factor threshold value stored in the internal storage: If the ratio between the air film risk coefficient and the preset air film risk coefficient threshold is less than 1, no signal is generated; If the ratio between the air film risk coefficient and the preset air film risk coefficient threshold is greater than or equal to 1, a repair signal is generated.

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