An anchor bolt loosening warning and monitoring method and system

Abstract

The present invention relates to a method and system for early warning and monitoring of anchor bolt loosening, belonging to the field of intelligent monitoring. It includes obtaining the angle detection value of a preset detection device; judging whether the angle detection value is consistent with a preset reference angle value; if the angle detection value is inconsistent with the reference angle value, reporting a prompt that the anchor bolt loosening is abnormal; if the angle detection value is consistent with the reference angle value, controlling a preset vibration device to vibrate with a preset vibration intensity, and obtaining the angle vibration condition of the detection device during vibration; judging whether the angle vibration condition is consistent with a preset reference vibration condition; if the angle vibration condition is consistent with the reference vibration condition, completing the monitoring of anchor bolt loosening; if the angle vibration condition is inconsistent with the reference vibration condition, reporting a prompt that the anchor bolt loosening is abnormal. This application has the effect of improving the accuracy of monitoring.

Description

Technical Field

[0001] The present invention relates to the field of intelligent monitoring, and in particular to a method and system for early warning and monitoring of anchor bolt loosening. Background Art

[0002] Early warning detection of anchor bolt loosening is a detection method for real-time or regular monitoring of the connection state of anchor bolts to detect possible loosening signs of anchor bolts in advance and issue warnings.

[0003] In the prior art, when warning of anchor bolt loosening, sensors and monitoring systems are usually installed on the anchor bolts to monitor the tightening state of the anchor bolts in real time. Once signs of anchor bolt loosening are detected, the system will immediately issue a warning signal to take maintenance or repair measures in time to ensure the safety and stability of the structure.

[0004] In view of the above related technologies, when warning of anchor bolt loosening, the data transmitted by the sensors on the anchor bolts is easily interfered by the external environment, resulting in data deviation, thereby reducing the accuracy of detection, which needs to be improved. Summary of the Invention

[0005] In order to improve the accuracy of monitoring, the present invention provides a method and system for early warning and monitoring of anchor bolt loosening.

[0006] In a first aspect, the present invention provides a method for early warning and monitoring of anchor bolt loosening, adopting the following technical solutions:

[0007] A method for early warning and monitoring of anchor bolt loosening includes:

[0008] Obtaining the angle detection value of a preset detection device;

[0009] Judging whether the angle detection value is consistent with a preset reference angle value;

[0010] If the angle detection value is inconsistent with the reference angle value, reporting an abnormal loosening of the anchor bolt;

[0011] If the angle detection value is consistent with the reference angle value, controlling a preset vibration device to vibrate with a preset vibration force, and obtaining the angle vibration condition of the detection device during vibration;

[0012] Judging whether the angle vibration condition is consistent with a preset reference vibration condition;

[0013] If the angle vibration condition is consistent with the reference vibration condition, completing the monitoring of anchor bolt loosening;

[0014] If the angle vibration condition is inconsistent with the reference vibration condition, reporting an abnormal loosening of the anchor bolt.

[0015] By adopting the above technical solution, the loosening condition of the anchor bolt is known by understanding the consistency between the angle detection value and the reference angle value. And when the angle detection value is consistent with the reference angle value, the loosening condition of the anchor bolt is further determined by understanding the consistency between the angle vibration condition and the reference vibration condition. When the angle vibration condition is consistent with the reference vibration condition, the monitoring of the loosening of the anchor bolt is completed; when the angle vibration condition is inconsistent with the reference vibration condition, it indicates that the anchor bolt is loose, that is, a prompt for abnormal loosening of the anchor bolt is reported. Thereby improving the accuracy of the monitoring.

[0016] Optionally, it further includes:

[0017] Based on the condition that the angle detection value is consistent with the reference angle value, the magnetic field parameters of a preset detection area are obtained;

[0018] Based on the condition that the magnetic field parameters are inconsistent with the preset reference magnetic field parameters, a parameter difference value is matched from a preset parameter database according to the magnetic field parameters and the reference magnetic field parameters;

[0019] A current intensity value is matched from a preset current database according to the parameter difference value;

[0020] A preset current device is controlled to send a current to a preset electromagnetic device on the detection device with the current intensity value, and the angle detection value is obtained again as the adjusted angle value;

[0021] It is judged whether the angle detection value is consistent with the adjusted angle value;

[0022] If the angle detection value is consistent with the adjusted angle value, the monitoring of the loosening of the anchor bolt is completed;

[0023] If the angle detection value is inconsistent with the adjusted angle value, a prompt for abnormal loosening of the anchor bolt is reported.

[0024] By adopting the above technical solution, the parameter difference value is known by understanding the consistency between the magnetic field parameters in the detection area and the reference parameters, and then the current intensity value is matched. Then, by controlling the current device to send a current to the detection device with the current intensity value, the magnetic field parameters are adjusted. Finally, by understanding the consistency between the angle detection value and the adjusted angle value, it is known whether there is a deviation in the obtained angle detection value. When the angle detection value is consistent with the adjusted angle value, it indicates that there is no deviation in the angle detection value; when the angle detection value is inconsistent with the adjusted angle value, it indicates that there is a deviation in the angle detection value. Thereby further improving the accuracy of the monitoring.

[0025] Optionally, it further includes:

[0026] Based on the condition that the angle detection value is consistent with the adjusted angle value, the detection image information of the anchor bolt is obtained;

[0027] It is judged whether the preset anchor bolt rod feature is included in the detection image information;

[0028] When and only when the detected image information contains the anchor bolt rod feature, determine the loosening distance according to the detected image information, the anchor bolt rod feature, and the preset anchor bolt size;

[0029] Match the loosening degree value from the preset loosening database according to the loosening distance;

[0030] Determine the initial angle value according to the loosening degree value and the angle detection value;

[0031] Report and prompt abnormal loosening of the surrounding anchor bolts according to the consistency between the initial angle value and the reference angle value.

[0032] By adopting the above technical solution, understand the inclusion situation between the detected image information and the anchor bolt rod feature to know the loosening situation of the anchor bolt. When it is included, then know the loosening degree value by understanding the loosening distance, and further know the initial angle value. Then, by understanding the consistency between the initial angle value and the adjusted angle value, know the loosening situation of the surrounding anchor bolts. When they are inconsistent, report and prompt abnormal loosening of the surrounding anchor bolts, so as to further monitor the loosening situation of the surrounding anchor bolts. Furthermore, the accuracy of the monitoring is improved.

[0033] Optionally, it further includes the steps after obtaining the angle detection value of the anchor bolt, specifically as follows:

[0034] Obtain the magnetic field strength value of the preset detection area;

[0035] Judge whether the magnetic field strength value falls into the preset reference magnetic field interval;

[0036] When and only when the magnetic field strength value does not fall into the reference magnetic field interval, match the magnetic field difference value from the preset magnetic field database according to the magnetic field strength value and the reference magnetic field interval;

[0037] Match the magnetic field angle deviation value from the magnetic field database according to the magnetic field difference value;

[0038] Adjust the angle detection value according to the magnetic field angle deviation value.

[0039] By adopting the above technical solution, understand the falling situation between the magnetic field strength value and the reference magnetic field interval to know the accuracy of the angle detection value. And when the magnetic field strength value does not fall into the reference magnetic field interval, know the magnetic field angle deviation value by understanding the magnetic field difference value, so as to adjust the angle detection value, improve the accuracy of the angle detection value, and further improve the accuracy of the anchor bolt loosening early warning monitoring.

[0040] Optionally, it further includes:

[0041] When the angle detection value is inconsistent with the reference angle value, obtain the current date information and the installation date information of the anchor bolt;

[0042] Determine the installation duration of the anchor bolt according to the current date information and the installation date information;

[0043] Determine the installation duration of the detection device according to the installation duration of the anchor bolt;

[0044] Match the reference installation duration from the preset installation database according to the angle vibration condition;

[0045] Judge whether the installation duration of the device exceeds the reference installation duration;

[0046] If the installation duration of the device does not exceed the reference installation duration, report a prompt for abnormal loosening of the anchor bolt;

[0047] If the installation duration of the device exceeds the reference installation duration, abolish the obtained angle detection value and report a prompt for damage to the detection device.

[0048] By adopting the above technical solution, by understanding the current date information and the installation date information of the anchor bolt, the installation duration of the anchor bolt is known, and then the installation duration of the detection device is known. By further understanding the exceeding situation between the installation duration of the device and the reference installation duration, the damage situation of the detection device is known. When the detection device is damaged, the obtained angle detection value is abolished and a prompt for damage to the detection device is reported. In this way, the monitoring error rate is reduced.

[0049] Optionally, it further includes:

[0050] Obtain the external vibration condition of the detection area;

[0051] Determine the main vibration area according to the external vibration condition and the preset anchor bolt installation area;

[0052] Determine the vibration influence distance according to the main vibration area and the external vibration condition;

[0053] Match the anchor bolt loosening time from the preset vibration database according to the vibration influence distance and the external vibration condition;

[0054] Determine the anchor bolt loosening date according to the installation date information and the anchor bolt loosening time;

[0055] Match the loosening prompt date from the preset date database according to the anchor bolt loosening date, and give a prompt on the loosening prompt date.

[0056] By adopting the above technical solution, the main vibration area is known by understanding the external vibration situation and the anchor bolt installation area, and then the vibration influence distance is known. Further, by understanding the vibration influence distance and the external vibration situation, the loosening time of the anchor bolt is known, and then the loosening date of the anchor bolt is known. A prompt is issued on the loosening prompt date to prompt the staff to conduct an on-site inspection of the anchor bolt, thereby reducing the probability of the complete loosening of the anchor bolt.

[0057] Optionally, it further includes:

[0058] Based on when the anchor bolt is installed, control the preset installation device to install the anchor bolt into the preset detection area with a preset reference pre-tightening force;

[0059] After installation, obtain the elastic pressure value of the anchor bolt;

[0060] Judge whether the elastic pressure value is less than the preset reference pressure value;

[0061] If the elastic pressure value is not less than the reference pressure value, the monitoring of the loosening of the anchor bolt is completed;

[0062] If the elastic pressure value is less than the reference pressure value, report and prompt that the loosening of the anchor bolt is abnormal.

[0063] By adopting the above technical solution, a pre-tightening force is applied to the anchor bolt to install it into the detection area, and then by understanding the magnitude relationship between the elastic pressure value of the anchor bolt and the reference pressure value, the loosening situation of the anchor bolt is known. And when the anchor bolt loosens, a prompt is given. In this way, the accuracy of the monitoring of the loosening of the anchor bolt is improved.

[0064] Optionally, it further includes:

[0065] Based on when the elastic pressure value is less than the reference pressure value, obtain the environmental temperature value of the detection area;

[0066] Judge whether the environmental temperature value is consistent with the preset reference temperature value;

[0067] When and only when the environmental temperature value is inconsistent with the reference temperature value, calculate the difference between the environmental temperature value and the reference temperature value as the temperature difference value, and judge whether the temperature difference value is greater than zero;

[0068] If the temperature difference value is greater than zero, match the pressure difference value from the preset positive pressure database according to the temperature difference value;

[0069] If the temperature difference value is less than zero, match the pressure difference value from the preset negative pressure database according to the temperature difference value;

[0070] Adjust the elastic pressure value according to the pressure difference value;

[0071] Report a prompt that the anchor bolt is loose and abnormal only when the adjusted elastic pressure value is still less than the reference pressure value.

[0072] By adopting the above technical solution, the deviation of the elastic pressure value is known by understanding the consistency between the environmental temperature value and the reference temperature value. When the environmental temperature value is inconsistent with the reference temperature value, the calculated temperature difference value is used to match the pressure difference value, and then the elastic pressure value is adjusted. In this way, the accuracy of the elastic pressure value is improved.

[0073] Optionally, it further includes:

[0074] The anchor bolt loosening time needs to be calculated by a preset algorithm formula, and the algorithm formula is: , where is the anchor bolt loosening time, is the angle detection value of the anchor bolt, is the vibration amplitude in the external vibration condition, is the loosening distance, is the maximum displacement when the anchor bolt is completely loosened. When the displacement of the anchor bolt reaches this value, the anchor bolt is completely loosened. is the connection stiffness between the anchor bolt and the wall, is the second derivative of the anchor bolt displacement with respect to time, is the material mass of the anchor bolt.

[0075] By adopting the above technical solution, the anchor bolt loosening time can be calculated more accurately through the above algorithm formula, and then the loosening of the anchor bolt can be better pre-warned and monitored, so as to improve the accuracy of monitoring the loosening of the anchor bolt.

[0076] In a second aspect, the present application provides an anchor bolt loosening early warning and monitoring system, adopting the following technical solution:

[0077] An anchor bolt loosening early warning and monitoring system includes:

[0078] An acquisition module for acquiring an angle detection value, an angle vibration condition, a magnetic field parameter, a detection image information, a magnetic field intensity value, a current date information, an installation date information, an external vibration condition, an elastic pressure value, and an environmental temperature value;

[0079] A memory for storing the program of any one of the above anchor bolt loosening early warning and monitoring methods;

[0080] A processor, and the program in the memory can be loaded and executed by the processor and implement any one of the above anchor bolt loosening early warning and monitoring methods.

[0081] By adopting the above technical solution, the loosening condition of the anchor bolt is known by understanding the consistency between the angle detection value and the reference angle value. And when the angle detection value is consistent with the reference angle value, the loosening condition of the anchor bolt is further determined by understanding the consistency between the angle vibration condition and the reference vibration condition. When the angle vibration condition is consistent with the reference vibration condition, the monitoring of the loosening of the anchor bolt is completed; when the angle vibration condition is inconsistent with the reference vibration condition, it indicates that the anchor bolt is loose, that is, a prompt for abnormal loosening of the anchor bolt is reported. Thereby improving the accuracy of monitoring.

[0082] In summary, the present application includes at least one of the following beneficial technical effects:

[0083] 1. By understanding the consistency between the angle detection value and the reference angle value, the loosening condition of the anchor bolt is known. And when the angle detection value is consistent with the reference angle value, the loosening condition of the anchor bolt is further determined by understanding the consistency between the angle vibration condition and the reference vibration condition. When the angle vibration condition is consistent with the reference vibration condition, the monitoring of the loosening of the anchor bolt is completed; when the angle vibration condition is inconsistent with the reference vibration condition, it indicates that the anchor bolt is loose, that is, a prompt for abnormal loosening of the anchor bolt is reported. Thereby improving the accuracy of monitoring;

[0084] 2. By understanding the current date information and the installation date information of the anchor bolt, the installation duration of the anchor bolt is known, and further the installation duration of the detection device is known. Then, by understanding the exceeding situation between the device installation duration and the reference installation duration, the damage condition of the detection device is known. When the detection device is damaged, the obtained angle detection value is abolished and a prompt for damage to the detection device is reported. Thereby reducing the error rate of monitoring;

[0085] 3. A pre-tightening force is applied to the anchor bolt to install the anchor bolt into the detection area, and then the loosening condition of the anchor bolt is known by understanding the magnitude relationship between the elastic pressure value of the anchor bolt and the reference pressure value. And when the anchor bolt is loose, a prompt is given. Thereby improving the accuracy of monitoring the loosening of the anchor bolt. Description of the Drawings

[0086] Figure 1 is the flowchart of a method for monitoring the early warning of the loosening of an anchor bolt in an embodiment of the present invention;

[0087] Figure 2 is the flowchart of a method for verifying the angle detection value in an embodiment of the present invention;

[0088] Figure 3 is the flowchart of a method for the steps after the angle detection value is consistent with the adjusted angle value in an embodiment of the present invention;

[0089] Figure 4It is a flowchart of the method in the embodiment of the present invention after obtaining the angle detection value of the anchor bolt;

[0090] Figure 5 It is a flowchart of the method in the embodiment of the present invention after the angle detection value is inconsistent with the reference angle value;

[0091] Figure 6 It is a flowchart of the method for detecting the loosening date of the anchor bolt in the embodiment of the present invention;

[0092] Figure 7 It is a flowchart of the method for detecting the elastic pressure value of the anchor bolt in the embodiment of the present invention;

[0093] Figure 8 It is a flowchart of the method in the embodiment of the present invention after the elastic pressure value is less than the reference pressure value. Detailed implementation manners

[0094] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0095] Refer to Figure 1 , an anchor bolt loosening early warning monitoring method is disclosed in an embodiment of the present application, including the following steps:

[0096] Step 100: Obtain the angle detection value of a preset detection device.

[0097] The detection device refers to an angle sensor for detecting the anchor bolt. The angle detection value refers to the current angle of the anchor bolt. The angle detection value is obtained through the detection device.

[0098] Step 101: Determine whether the angle detection value is consistent with a preset reference angle value.

[0099] The reference angle value refers to an angle value used to assist in determining whether the anchor bolt is loosened. The reference angle value is set in advance by those skilled in the art and will not be elaborated here. By determining whether the angle detection value is consistent with the reference angle value, it is known whether the anchor bolt is loosened.

[0100] Step 1011: If the angle detection value is inconsistent with the reference angle value, report that the anchor bolt loosening is abnormal.

[0101] The anchor bolt loosening abnormality refers to the abnormality that the anchor bolt is loosened. If the angle detection value is inconsistent with the reference angle value, it indicates that the anchor bolt is loosened. It is necessary to report and prompt the anchor bolt loosening abnormality.

[0102] Step 1012: If the angle detection value is consistent with the reference angle value, control a preset vibration device to vibrate with a preset vibration intensity, and obtain the angle vibration condition of the detection device during the vibration.

[0103] A vibration device refers to a micro-vibrator used to further detect whether an anchor bolt has become loose. The vibration intensity refers to the intensity of vibration of the vibration device. The vibration intensity is preset by those skilled in the art and will not be elaborated here. The angular vibration situation refers to the change in the angle of the anchor bolt during vibration. If the angle detection value is consistent with the reference angle value, it indicates that the anchor bolt has not become loose. The vibration device is controlled to vibrate with the vibration intensity, and the angular vibration situation of the detection device is obtained during vibration. This is used to further detect the loosening situation of the anchor bolt. The angular vibration situation is obtained through the detection device.

[0104] Step 10121: Determine whether the angular vibration situation is consistent with the preset reference vibration situation.

[0105] The reference vibration situation refers to the vibration situation used to assist in judging whether the anchor bolt has become loose. The reference vibration situation is preset by those skilled in the art and will not be elaborated here. By judging whether the angular vibration situation is consistent with the reference vibration situation, it is known whether the anchor bolt has become loose.

[0106] Step 101211: If the angular vibration situation is consistent with the reference vibration situation, the monitoring of the loosening of the anchor bolt is completed.

[0107] If the angular vibration situation is consistent with the reference vibration situation, it indicates that the anchor bolt has not become loose, and the monitoring of the loosening of the anchor bolt can be completed.

[0108] Step 101212: If the angular vibration situation is inconsistent with the reference vibration situation, report that the loosening of the anchor bolt is abnormal.

[0109] If the angular vibration situation is inconsistent with the reference vibration situation, it indicates that the anchor bolt is loose, and it is necessary to report that the loosening of the anchor bolt is abnormal.

[0110] Refer to Figure 2 , the verification method of the angle detection value includes the following steps:

[0111] Step 200: Based on when the angle detection value is consistent with the reference angle value, obtain the magnetic field parameters of the preset detection area.

[0112] When the angle detection value is consistent with the reference angle value, it is necessary to obtain the magnetic field parameters of the detection area for subsequent steps. The detection area refers to the area where the loosening of the anchor bolt is detected. The detection area is preset by those skilled in the art and will not be elaborated here. The magnetic field parameter refers to the magnetic flux passing through the detection area within the detection area. The magnetic field parameter is measured and obtained by a fluxmeter set in the detection area.

[0113] Step 201: Based on when the magnetic field parameter is inconsistent with the preset reference magnetic field parameter, match the parameter difference value from the preset parameter database according to the magnetic field parameter and the reference magnetic field parameter.

[0114] The reference magnetic field parameters refer to the parameters used to assist in judging whether there are abnormalities in the magnetic field parameters within the detection area. By judging whether the magnetic field parameters are consistent with the reference magnetic field parameters, it can be known whether there are abnormalities in the magnetic field parameters within the detection area.

[0115] When the magnetic field parameters are inconsistent with the reference magnetic field parameters, it indicates that there are abnormalities in the magnetic field parameters within the detection area, and it is necessary to match the parameter difference value corresponding to the reference magnetic field parameters through the parameter database. The parameter difference value refers to the difference in magnetic flux between the magnetic field parameters within the detection area and the reference magnetic field parameters. The parameter database contains the parameter difference values corresponding to the magnetic field parameters and the reference magnetic field parameters. The parameter database is a manually set database and will not be elaborated here.

[0116] When the magnetic field parameters are consistent with the reference magnetic field parameters, it indicates that there are no abnormalities in the magnetic field parameters within the detection area.

[0117] Step 202: Match the current intensity value from the preset current database according to the parameter difference value.

[0118] The current intensity value refers to the current intensity required to adjust the magnetic field parameters to be consistent with the reference magnetic field parameters by applying current to the detection device. Through the current database, the current intensity value corresponding to the parameter difference value can be matched. It contains the corresponding relationship between the parameter difference value and the current intensity value. The current database is a manually set database and will not be elaborated here.

[0119] Step 203: Control the preset current device to send current to the preset electromagnetic device on the detection device at the current intensity value, and obtain the angle detection value again as the adjusted angle value.

[0120] The current device refers to the device used to apply current to the electromagnetic device. The electromagnetic device refers to the device used to receive the current from the current device. By receiving the current applied by the current device, the electromagnetic environment near the detection device can be changed, and thus the obtained angle detection value can be adjusted. Control the current device to send current to the detection device at the current intensity value, and after power-on, obtain the angle detection value again as the adjusted angle value. The adjusted angle value refers to the angle detection value obtained after the detection device is powered on.

[0121] Step 204: Judge whether the angle detection value is consistent with the adjusted angle value.

[0122] By judging whether the angle detection value is consistent with the adjusted angle value, it can be known whether the angle detection value is interfered by the magnetic field parameters.

[0123] Step 205: If the angle detection value is consistent with the adjusted angle value, the monitoring of the anchor bolt loosening is completed.

[0124] If the angle detection value is the same as the adjusted angle value, it indicates that the angle detection value is not interfered by the magnetic field parameters, and the monitoring of the anchor bolt loosening can be completed.

[0125] Step 206: If the angle detection value is not the same as the adjusted angle value, report that the loosening of the anchor bolt is abnormal.

[0126] If the angle detection value is not the same as the adjusted angle value, it indicates that the angle detection value is interfered by the magnetic field parameters. Therefore, the "angle detection value is the same as the reference angle value" in the above step 1012 is abnormal, and it is necessary to report that the loosening of the anchor bolt is abnormal.

[0127] Refer to Figure 3 , and it also includes the steps after the angle detection value is the same as the adjusted angle value, which are specifically as follows:

[0128] Step 300: When the angle detection value is the same as the adjusted angle value, obtain the detection image information of the anchor bolt.

[0129] When the angle detection value is the same as the adjusted angle value, it is necessary to obtain the detection image information of the anchor bolt for subsequent steps. The detection image information refers to the image containing the anchor bolt in the detection area, and the detection image information is obtained by taking pictures with a camera set in the detection area.

[0130] Step 301: Determine whether the preset anchor bolt rod feature is included in the detection image information.

[0131] The anchor bolt rod feature refers to the feature of the anchor bolt rod part on the anchor bolt. The anchor bolt rod feature is preset by those skilled in the art and will not be elaborated here. By determining whether the anchor bolt rod feature is included in the detection image information, it can be known whether the anchor bolt is loosened.

[0132] Step 302: When and only when the detection image information contains the anchor bolt rod feature, determine the loosening distance according to the detection image information, the anchor bolt rod feature, and the preset anchor bolt size.

[0133] The anchor bolt size refers to the size of the anchor bolt. The anchor bolt size is preset by those skilled in the art and will not be elaborated here. The loosening distance refers to the distance that the anchor bolt loosens out of the wall. When and only when the detection image information contains the anchor bolt rod feature, it indicates that the anchor bolt is loosened. By the detection image information, the distance that the anchor bolt rod protrudes out of the wall in the detection image information can be known, and then the loosening distance can be known by comparing with the anchor bolt size.

[0134] Step 303: Match the loosening degree value from the preset loosening database according to the loosening distance.

[0135] The loosening degree value refers to the number of degrees that the anchor bolt needs to rotate for the loosening distance. Through the loosening database, the loosening degree value corresponding to the loosening distance can be matched. It contains the corresponding relationship between the loosening distance and the loosening degree value. The loosening database is a manually set database and will not be elaborated here.

[0136] Step 304: Determine the initial angle value according to the loosening degree value and the angle detection value.

[0137] The initial angle value refers to the angle value of the anchor bolt after rotation and loosening. The initial angle value can be obtained through the calculation formula c = a + (b - 360 * n) - 360 * n, where c is the initial angle value, a is the angle detection value, b is the loosening degree value, and n is the number of turns of the anchor bolt rotation. n is equal to the integer part of b divided by 360 without rounding.

[0138] Step 305: Report a prompt for abnormal loosening of the surrounding anchor bolts according to the consistency between the initial angle value and the reference angle value.

[0139] Abnormal loosening of the surrounding anchor bolts means that in the same detection area, the other anchor bolts around the currently detected anchor bolt may have abnormal loosening. In this embodiment, there are multiple anchor bolts in the same detection area. By judging the consistency between the initial angle value and the reference angle value, it is known whether there is a possibility of loosening of the other anchor bolts.

[0140] If the initial angle value is inconsistent with the reference angle value, it indicates that the other anchor bolts may be loose, and a prompt for abnormal loosening of the surrounding anchor bolts needs to be reported.

[0141] If the initial angle value is consistent with the reference angle value, it indicates that the other anchor bolts are not loose, and the monitoring of the anchor bolt loosening can be completed.

[0142] Refer to Figure 4 , and it also includes steps after obtaining the angle detection value of the anchor bolt, specifically as follows:

[0143] Step 400: Obtain the magnetic field intensity value of the preset detection area.

[0144] The detection area refers to the area where the anchor bolt is detected for loosening. The detection area is set in advance by those skilled in the art and will not be elaborated here. The magnetic field intensity value refers to the magnetic field intensity of the detection area. The magnetic field intensity value is measured and obtained by a magnetic field sensor arranged in the detection area.

[0145] Step 401: Judge whether the magnetic field intensity value falls within the preset reference magnetic field range.

[0146] The reference magnetic field range refers to the magnetic field intensity range used to assist in determining whether the magnetic field intensity in the detection area is abnormal. The reference magnetic field range is set in advance by those skilled in the art and will not be elaborated here. By determining whether the magnetic field intensity value falls within the reference magnetic field range, it can be known whether there is an abnormality in the magnetic field intensity in the detection area.

[0147] Step 402: When and only when the magnetic field intensity value does not fall within the reference magnetic field range, match the magnetic field difference value from the preset magnetic field database according to the magnetic field intensity value and the reference magnetic field range.

[0148] The magnetic field difference value refers to the magnetic field intensity difference between the magnetic field intensity value in the detection area and the maximum or minimum value of the reference magnetic field range.

[0149] When and only when the magnetic field intensity value does not fall within the reference magnetic field range, it indicates that there is an abnormality in the magnetic field intensity in the detection area, and it is necessary to match the magnetic field difference value corresponding to the magnetic field intensity value and the reference magnetic field range through the magnetic field database. The magnetic field database contains the corresponding relationship between the magnetic field intensity value, the reference magnetic field range, and the magnetic field difference value. The magnetic field database is a database set by humans and will not be elaborated here.

[0150] If the magnetic field intensity value falls within the reference magnetic field range, it indicates that there is no abnormality in the magnetic field intensity in the detection area, and the magnetic field detection can be completed.

[0151] Step 403: Match the magnetic field angle deviation value from the magnetic field database according to the magnetic field difference value.

[0152] The magnetic field angle deviation value refers to the value of the deviation of the angle detection value caused by magnetic field interference. Through the magnetic field database, the magnetic field angle deviation value corresponding to the magnetic field difference value can be matched, which contains the corresponding relationship between the magnetic field difference value and the magnetic field angle deviation value.

[0153] Step 404: Adjust the angle detection value according to the magnetic field angle deviation value.

[0154] Use the magnetic field angle deviation value to adjust the angle detection value obtained in step 100, and then perform steps 101 to 101212 after adjustment.

[0155] Refer to Figure 5 , and it also includes the steps after the angle detection value is inconsistent with the reference angle value, which are specifically as follows:

[0156] Step 500: When the angle detection value is inconsistent with the reference angle value, obtain the current date information and the installation date information of the anchor bolt.

[0157] When the angle detection value is inconsistent with the reference angle value, it is necessary to obtain the current date information and the installation date information of the anchor bolt for subsequent steps. The current date information refers to the date when the anchor bolt is detected for looseness. The installation date information refers to the date when the anchor bolt is installed. The current date information and the installation date information can be obtained by retrieving a preset calendar database. The calendar database contains the current date information and the installation date information. The calendar database is a user-defined database and will not be elaborated here.

[0158] Step 501: Determine the installation duration of the anchor bolt based on the current date information and the installation date information.

[0159] The installation duration of the anchor bolt refers to the duration when the anchor bolt is installed into the wall. The installation duration of the anchor bolt can be obtained by calculating the difference between the current date information and the installation date information.

[0160] Step 502: Determine the installation duration of the detection device based on the installation duration of the anchor bolt.

[0161] The installation duration of the detection device refers to the duration when the detection device is installed. Since the detection device and the anchor bolt are installed simultaneously, the installation duration of the anchor bolt is the installation duration of the detection device.

[0162] Step 503: Match the reference installation duration from a preset installation database according to the angle vibration condition.

[0163] The reference installation duration refers to the duration when the detection device can work properly within the anchor bolt. The reference installation duration corresponding to the angle vibration condition can be matched through the installation database, which contains the corresponding relationship between the angle vibration condition and the reference installation duration. The installation database is a user-defined database and will not be elaborated here.

[0164] Step 504: Determine whether the installation duration of the device exceeds the reference installation duration.

[0165] By determining whether the installation duration of the device exceeds the reference installation duration, it is possible to know whether there is a possibility of damage to the detection device, and further know whether the angle detection value is accurate.

[0166] Step 5041: If the installation duration of the device does not exceed the reference installation duration, report a prompt that the anchor bolt loosening is abnormal.

[0167] If the installation duration of the device does not exceed the reference installation duration, it means that the detection device is not damaged, and it is only necessary to directly report a prompt that the anchor bolt loosening is abnormal.

[0168] Step 5042: If the installation duration of the device exceeds the reference installation duration, abolish the obtained angle detection value and report a prompt that the detection device is damaged.

[0169] If the installation duration of the device exceeds the reference installation duration, it indicates that there is a possibility of damage to the detection device, and the angle detection value may be inaccurate. The obtained angle detection value needs to be abolished, and a prompt for device damage should be reported.

[0170] Refer to Figure 6 , the detection method for the anchor bolt loosening date includes the following steps:

[0171] Step 600: Obtain the external vibration situation of the detection area.

[0172] The external vibration situation refers to the frequency, amplitude, area, and azimuth of the vibration source of the vibration caused by the external sound and / or daily actions in the detection area. The external vibration situation is obtained by the vibration sensor set in the detection area.

[0173] Step 601: Determine the main vibration area according to the external vibration situation and the preset anchor bolt installation area.

[0174] The anchor bolt installation area refers to the specific location where the anchor bolt is installed in the detection area, and the anchor bolt installation area is located within the detection area. The anchor bolt installation area is set in advance by those skilled in the art and will not be elaborated here. The main vibration area refers to the main area where the vibration affects the anchor bolts in the anchor bolt installation area. By knowing the azimuth of the vibration source from the external vibration situation, and then taking the overlapping part of the vibration area included in the external vibration situation and the anchor bolt installation area as the vibration area, it can be known which small area in the anchor bolt installation area will be mainly affected by the external vibration.

[0175] Step 602: Determine the vibration influence distance according to the main vibration area and the external vibration situation.

[0176] The vibration influence distance refers to the distance that the external vibration affects the main vibration area. Through the preset distance database, the vibration influence distance corresponding to the main vibration area and the external vibration situation can be matched. It contains the corresponding relationship between the main vibration area, the external vibration situation, and the vibration influence distance. The distance database is a manually set database and will not be elaborated here.

[0177] Step 603: Match the anchor bolt loosening time from the preset vibration database according to the vibration influence distance and the external vibration situation.

[0178] The anchor bolt loosening time refers to the duration when the anchor bolt becomes loose due to the influence of vibration. Through the vibration database, the anchor bolt loosening time corresponding to the vibration influence distance and the external vibration situation can be matched. It contains the algorithm formula between the vibration influence distance, the external vibration situation, and the anchor bolt loosening time. The vibration database is a manually set database and will not be elaborated here.

[0179] The algorithm formula is: , where is the loosening time of the anchor bolt, is the angle detection value of the anchor bolt, is the vibration amplitude in the external vibration condition, is the loosening distance, is the maximum displacement when the anchor bolt is completely loosened. When the displacement of the anchor bolt reaches this value, the anchor bolt is completely loosened. is the connection stiffness between the anchor bolt and the wall, is the second derivative of the anchor bolt displacement with respect to time, is the material mass of the anchor bolt, where and are obtained by those skilled in the art by looking up tables through understanding the strength of the material and the strength of the wall. and are all preset by those skilled in the art in advance and will not be elaborated here.

[0180] Through the above algorithm formula, the approximate loosening time of the anchor bolt can be calculated, and based on this, the loosening of the anchor bolt can be better monitored and warned.

[0181] Step 604: Determine the anchor bolt loosening date according to the installation date information and the anchor bolt loosening time.

[0182] The anchor bolt loosening date refers to the date when the anchor bolt is loosened due to the influence of vibration. The anchor bolt loosening date can be obtained by calculating the sum of the installation date information and the anchor bolt loosening time.

[0183] Step 605: Match the loosening prompt date from the preset date database according to the anchor bolt loosening date, and give a prompt on the loosening prompt date.

[0184] The loosening prompt date refers to the date used to prompt the staff to check the loosening of the anchor bolt. Through the date database, the loosening prompt date corresponding to the anchor bolt loosening date can be matched, which contains the corresponding relationship between the anchor bolt loosening date and the loosening prompt date. The date database is a database set by humans and will not be elaborated here. And a prompt will be given to the staff on the loosening prompt date.

[0185] Referring to Figure 7 , the detection method of the elastic pressure value of the anchor bolt includes the following steps:

[0186] Step 700: Based on the installation of the anchor bolt, control the preset installation equipment to install the anchor bolt into the preset detection area with a preset reference pre-tightening force.

[0187] The detection area refers to the area where the loosening of the anchor bolt is detected. The reference pre-tightening force refers to the pre-tightening force applied to the anchor bolt before it is installed into the wall. The detection area and the reference pre-tightening force are set in advance by those skilled in the art and will not be elaborated here. The installation device refers to a screw gun used to install the anchor bolt into the wall in the detection area. When installing the anchor bolt, control the installation device to install the anchor bolt into the wall in the detection area with the reference pre-tightening force.

[0188] Step 701: After installation, obtain the elastic pressure value of the anchor bolt.

[0189] The elastic pressure value refers to the reaction force of the anchor bolt on the wall due to its own elastic deformation after being subjected to the pre-tightening force. After the anchor bolt is installed, obtain the elastic pressure value of the anchor bolt for subsequent steps. The elastic pressure value is obtained through a pressure sensor set at the bottom of the anchor bolt rod.

[0190] Step 702: Determine whether the elastic pressure value is less than a preset reference pressure value.

[0191] The reference pressure value refers to the elastic pressure value that the anchor bolt should reach after being installed with the reference pre-tightening force. The reference pressure value is used to assist in determining whether the elastic pressure value of the anchor bolt is abnormal, and thus to know whether the anchor bolt has become loose. The reference pressure value is set in advance by those skilled in the art and will not be elaborated here. By determining whether the elastic pressure value is less than the reference pressure value, it can be known whether the anchor bolt has become loose.

[0192] Step 7021: If the elastic pressure value is not less than the reference pressure value, complete the monitoring of the loosening of the anchor bolt.

[0193] If the elastic pressure value is not less than the reference pressure value, it means that the anchor bolt has not become loose, and the monitoring of the loosening of the anchor bolt can be completed.

[0194] Step 7022: If the elastic pressure value is less than the reference pressure value, report that the loosening of the anchor bolt is abnormal.

[0195] If the elastic pressure value is less than the reference pressure value, it means that the anchor bolt has become loose, and it is necessary to report that the loosening of the anchor bolt is abnormal.

[0196] Refer to Figure 8 and it also includes the steps after the elastic pressure value is less than the reference pressure value, which are specifically as follows:

[0197] Step 800: Based on the elastic pressure value being less than the reference pressure value, obtain the environmental temperature value of the detection area.

[0198] When the elastic pressure value is less than the reference pressure value, it is necessary to obtain the environmental temperature value of the detection area for subsequent steps. The environmental temperature value refers to the temperature value of the detection area. The environmental temperature value can be obtained through a temperature sensor set in the detection area.

[0199] Step 801: Determine whether the ambient temperature value is consistent with a preset reference temperature value.

[0200] The reference temperature value refers to the temperature value used to assist in determining whether the ambient temperature value is abnormal. The reference temperature value is set in advance by those skilled in the art and will not be elaborated here. By determining whether the ambient temperature value is consistent with the reference temperature value, it can be known whether the ambient temperature value is abnormal.

[0201] Step 802: When and only when the ambient temperature value is inconsistent with the reference temperature value, calculate the difference between the ambient temperature value and the reference temperature value as the temperature difference value, and determine whether the temperature difference value is greater than zero.

[0202] The temperature difference value refers to the temperature difference between the ambient temperature value and the reference temperature value when the ambient temperature value is abnormal. The inconsistency between the ambient temperature value and the reference temperature value indicates that the ambient temperature value is abnormal, and the ambient temperature value will affect the elastic pressure value, which further indicates that there is an error in the obtained elastic pressure value. It is necessary to calculate the difference between the ambient temperature value and the reference temperature value as the temperature difference value.

[0203] Step 8021: If the temperature difference value is greater than zero, match the pressure difference value from a preset positive pressure database according to the temperature difference value.

[0204] The pressure difference value refers to the deviation value of the elastic pressure value caused by the abnormal temperature. When the temperature difference value is greater than zero, it indicates a high-temperature difference. Through the positive pressure database, the pressure difference value corresponding to the high-temperature difference can be matched, which contains the corresponding relationship between the temperature difference value and the pressure difference value. The positive pressure database is a database set by humans and will not be elaborated here.

[0205] Step 8022: If the temperature difference value is less than zero, match the pressure difference value from a preset negative pressure database according to the temperature difference value.

[0206] When the temperature difference value is less than zero, it indicates a low-temperature difference. Through the negative pressure database, the pressure difference value corresponding to the low-temperature difference can be matched, which contains the corresponding relationship between the temperature difference value and the pressure difference value. The negative pressure database is a database set by humans and will not be elaborated here.

[0207] Step 803: Adjust the elastic pressure value according to the pressure difference value.

[0208] Adjust the elastic pressure value with the matched pressure difference value, and then determine again whether the adjusted elastic pressure value is still less than the reference pressure value.

[0209] Step 804: When and only when the adjusted elastic pressure value is still less than the reference pressure value, report a prompt that the anchor bolt is loose and abnormal.

[0210] When and only when the adjusted elastic pressure value is still less than the reference pressure value, it indicates that the anchor bolt is loose and an alarm about abnormal loosening of the anchor bolt needs to be reported.

[0211] If the adjusted elastic pressure value is not less than the reference pressure value, it indicates that the anchor bolt is not loose, and the monitoring of the anchor bolt loosening can be completed.

[0212] Based on the same inventive concept, an embodiment of the present invention provides an anchor bolt loosening early warning monitoring system, including:

[0213] An acquisition module, configured to acquire an angle detection value, an angle vibration condition, a magnetic field parameter, a detection image information, a magnetic field intensity value, a current date information, an installation date information, an external vibration condition, an elastic pressure value, and an environmental temperature value;

[0214] A memory, configured to store a program of an anchor bolt loosening early warning monitoring method;

[0215] A processor, and the program in the memory can be loaded and executed by the processor to implement an anchor bolt loosening early warning monitoring method.

[0216] Those skilled in the art can clearly understand that, for the convenience and simplicity of description, only the above division of each functional module is used as an example. In practical applications, the above functions can be allocated to different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above. The specific working processes of the above-described system, device, and unit can refer to the corresponding processes in the foregoing method embodiments and will not be repeated here.

[0217] The above are only the preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the idea of the present invention belong to the protection scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. An early warning monitoring method for anchor bolt loosening, characterized in that, Including: Obtain the angle detection value of a preset detection device; Determine whether the angle detection value is consistent with a preset reference angle value; If the angle detection value is inconsistent with the reference angle value, report a prompt that the anchor bolt is loose abnormally; If the angle detection value is consistent with the reference angle value, control a preset vibration device to vibrate with a preset vibration force, and obtain the angle vibration condition of the detection device during vibration; Determine whether the angle vibration condition is consistent with a preset reference vibration condition; If the angle vibration condition is consistent with the reference vibration condition, complete the monitoring of the anchor bolt loosening; If the angle vibration condition is inconsistent with the reference vibration condition, report a prompt that the anchor bolt is loose abnormally; Also including: Based on the angle detection value being consistent with the reference angle value, obtain the magnetic field parameters of a preset detection area; Based on the magnetic field parameters being inconsistent with the preset reference magnetic field parameters, match the parameter difference value from a preset parameter database according to the magnetic field parameters and the reference magnetic field parameters; Match the current intensity value from a preset current database according to the parameter difference value; Control a preset current device to send a current to a preset electromagnetic device on the detection device with the current intensity value, and obtain the angle detection value again as the adjusted angle value; Determine whether the angle detection value is consistent with the adjusted angle value; If the angle detection value is consistent with the adjusted angle value, complete the monitoring of the anchor bolt loosening; If the angle detection value is inconsistent with the adjusted angle value, report a prompt that the anchor bolt is loose abnormally; Also including: Based on the angle detection value being inconsistent with the reference angle value, obtain the current date information and the installation date information of the anchor bolt; Determine the installation duration of the anchor bolt according to the current date information and the installation date information; Determine the installation duration of the detection device according to the installation duration of the anchor bolt; Match the reference installation duration from a preset installation database according to the angle vibration condition; Determine whether the installation duration of the device exceeds the reference installation duration; If the installation duration of the device does not exceed the reference installation duration, report a prompt that the anchor bolt is loose abnormally; If the installation duration of the device exceeds the reference installation duration, abolish the obtained angle detection value and report a prompt that the detection device is damaged; Also including: Obtain the external vibration condition of the detection area; Determine the main vibration area according to the external vibration condition and a preset anchor bolt installation area; Determine the vibration influence distance according to the main vibration area and the external vibration condition; Match the anchor bolt loosening time from a preset vibration database according to the vibration influence distance and the external vibration condition; Determine the anchor bolt loosening date according to the installation date information and the anchor bolt loosening time; Match the loosening prompt date from a preset date database according to the anchor bolt loosening date, and give a prompt on the loosening prompt date.

2. The anchor bolt loosening warning and monitoring method according to claim 1, characterized in that Also including: Based on the angle detection value being consistent with the adjusted angle value, obtain the detection image information of the anchor bolt; Determine whether the detection image information contains a preset anchor bolt rod feature; When and only when the detection image information contains the anchor bolt rod feature, determine the loosening distance according to the detection image information, the anchor bolt rod feature, and a preset anchor bolt size; Match the loosening degree value from a preset loosening database according to the loosening distance; Determine the initial angle value according to the loosening degree value and the angle detection value; Report a prompt for abnormal loosening of the surrounding anchor bolts based on the consistency between the initial angle value and the reference angle value.

3. The anchor bolt loosening warning and monitoring method according to claim 1, characterized in that, It further includes steps after obtaining the angle detection value of the anchor bolt, specifically as follows: Obtain the magnetic field intensity value of the preset detection area; Determine whether the magnetic field intensity value falls within the preset reference magnetic field range; When and only when the magnetic field intensity value does not fall within the reference magnetic field range, match the magnetic field difference value from the preset magnetic field database according to the magnetic field intensity value and the reference magnetic field range; Match the magnetic field angle deviation value from the magnetic field database according to the magnetic field difference value; Adjust the angle detection value according to the magnetic field angle deviation value.

4. The anchor bolt loosening warning and monitoring method according to claim 1, wherein It further includes: Based on when the anchor bolt is installed, control the preset installation device to install the anchor bolt into the preset detection area with a preset reference pre-tightening force; After installation, obtain the elastic pressure value of the anchor bolt; Determine whether the elastic pressure value is less than the preset reference pressure value; If the elastic pressure value is not less than the reference pressure value, complete the monitoring of anchor bolt loosening; If the elastic pressure value is less than the reference pressure value, report a prompt for abnormal loosening of the anchor bolt.

5. The anchor bolt loosening warning and monitoring method according to claim 4, characterized in that, It further includes: Based on the elastic pressure value being less than the reference pressure value, obtain the environmental temperature value of the detection area; Determine whether the environmental temperature value is consistent with the preset reference temperature value; When and only when the environmental temperature value is inconsistent with the reference temperature value, calculate the difference between the environmental temperature value and the reference temperature value as the temperature difference value, and determine whether the temperature difference value is greater than zero; If the temperature difference value is greater than zero, match the pressure difference value from the preset positive pressure database according to the temperature difference value; If the temperature difference value is less than zero, match the pressure difference value from the preset negative pressure database according to the temperature difference value; Adjust the elastic pressure value according to the pressure difference value; When and only when the adjusted elastic pressure value is still less than the reference pressure value, report a prompt for abnormal loosening of the anchor bolt.

6. The method for warning and monitoring the loosening of an anchor bolt according to claim 1, characterized in that, The loosening time of the anchor bolt needs to be calculated by a preset algorithm formula, and the algorithm formula is as follows: , where t is the loosening time of the anchor bolt, ω is the angle detection value of the anchor bolt, A is the vibration amplitude in the external vibration condition, x is the loosening distance, and x max is the maximum displacement when the anchor bolt is completely loosened. When the displacement of the anchor bolt reaches this value, the anchor bolt is completely loosened. k is the connection stiffness between the anchor bolt and the wall, is the second derivative of the anchor bolt displacement with respect to time, and m is the material mass of the anchor bolt.

7. An anchor bolt loosening warning and monitoring system, characterized in that It includes: An acquisition module for acquiring the angle detection value, angle vibration condition, magnetic field parameter, detection image information, magnetic field intensity value, current date information, installation date information, external vibration condition, elastic pressure value, and environmental temperature value; A memory for storing the program of an anchor bolt loosening early warning monitoring method according to any one of claims 1 to 6; A processor, and the program in the memory can be loaded and executed by the processor and implement an anchor bolt loosening early warning monitoring method according to any one of claims 1 to 6.

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