Anchor bolt loosening early warning and monitoring method and system

Abstract

The invention relates to an anchor bolt loosening early warning monitoring method and system, and relates to the field of intelligent monitoring, and the method comprises the steps: obtaining a preset angle detection value of a detection device; judging whether the angle detection value is consistent with a preset reference angle value or not; if the angle detection value is not consistent with the reference angle value, reporting and prompting abnormal loosening of the anchor bolt; if the angle detection value is consistent with the reference angle value, preset vibration equipment is controlled to vibrate with preset vibration strength, and the angle vibration condition of the detection device is obtained during vibration; judging whether the angle vibration condition is consistent with a preset reference vibration condition or not; if the angle vibration condition is consistent with the reference vibration condition, anchor bolt loosening monitoring is completed; and if the angle vibration condition is not consistent with the reference vibration condition, reporting and prompting that the anchor bolt is loosened abnormally. The method and the device have the effect of improving the monitoring accuracy.

Description

Technical Field

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

[0002] Anchor bolt loosening early warning detection is a detection method that monitors the anchor bolt connection status in real time or regularly to detect possible signs of anchor bolt loosening in advance and issue an early warning.

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

[0004] With respect to the above-mentioned related technologies, when the loosening warning of the anchor bolt is carried out, the data transmitted by the sensor on the anchor bolt is easily disturbed by the external environment, resulting in data deviation, thereby reducing the accuracy of the detection, which needs to be improved. Summary of the invention

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

[0006] In a first aspect, the present invention provides an anchor bolt loosening early warning monitoring method, which adopts the following technical solution: An anchor bolt loosening early warning monitoring method, comprising: Obtaining an angle detection value of a preset detection device; Determine whether the angle detection value is consistent with the preset reference angle value; If the angle detection value is inconsistent with the reference angle value, a report will be issued indicating that the anchor bolt is loose; If the angle detection value is consistent with the reference angle value, the preset vibration device is controlled to vibrate with a preset vibration intensity, and the angle vibration condition of the detection device is obtained during the vibration; Determine whether the angle vibration condition is consistent with the preset reference vibration condition; If the angle vibration is consistent with the reference vibration, the anchor loosening monitoring is completed; If the angle vibration is inconsistent with the reference vibration, a report will be issued indicating that the anchor bolt is loose.

[0007] By adopting the above technical solution, the loosening of the anchor bolt can be known by understanding the consistency between the angle detection value and the reference angle value. When the angle detection value is consistent with the reference angle value, the loosening of the anchor bolt can be further determined by understanding the consistency between the angle vibration and the reference vibration. When the angle vibration is consistent with the reference vibration, the anchor bolt loosening monitoring is completed; when the angle vibration is inconsistent with the reference vibration, it means that the anchor bolt is loose, and the anchor bolt loosening abnormality is reported. This improves the accuracy of monitoring.

[0008] Optionally, also include: When the angle detection value is consistent with the reference angle value, obtaining magnetic field parameters of the preset detection area; When the magnetic field parameter is inconsistent with the preset reference magnetic field parameter, a parameter difference value is matched from a preset parameter database according to the magnetic field parameter and the reference magnetic field parameter; Matching the current intensity value from a preset current database according to the parameter difference value; Controlling the preset current device to emit current with the current intensity value to the preset electromagnetic device on the detection device, and obtaining 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, the anchor bolt loosening monitoring is completed; If the angle detection value is inconsistent with the adjusted angle value, a report will be issued indicating that the anchor bolt is loose.

[0009] By adopting the above technical solution, by understanding the consistency between the magnetic field parameters in the detection area and the reference parameters, the parameter difference value is known, and then the current intensity value is matched. Then, the magnetic field parameters are adjusted by controlling the current device to send current to the detection device with the current intensity value. Finally, by understanding the consistency between the angle detection value and the adjusted angle value, it is known whether the obtained angle detection value has a deviation. When the angle detection value is consistent with the adjusted angle value, it means that the angle detection value has no deviation; when the angle detection value is inconsistent with the adjusted angle value, it means that the angle detection value has a deviation. This further improves the accuracy of monitoring.

[0010] Optionally, also include: When the angle detection value is consistent with the adjusted angle value, the detection image information of the anchor bolt is obtained; Determine whether the detected image information contains preset anchor bolt features; If and only if the detected image information contains the anchor bolt feature, determine the loosening distance according to the detected image information, the anchor bolt feature and the preset anchor bolt size; Matching the looseness value from a preset looseness database according to the looseness distance; Determine the initial angle value based on the looseness value and the angle detection value; According to the consistency between the initial angle value and the reference angle value, the loosening of the surrounding anchor bolts is reported abnormally.

[0011] By adopting the above technical solution, the loosening of the anchor bolt can be known by understanding the inclusion between the detection image information and the anchor bolt rod characteristics. When included, the loosening degree value is known by understanding the loosening distance, and then the initial angle value is known. Then, by understanding the consistency between the initial angle value and the adjusted angle value, the loosening of the surrounding anchor bolts can be known. When inconsistent, the loosening of the surrounding anchor bolts is reported to be abnormal, so as to further monitor the loosening of the surrounding anchor bolts. This improves the accuracy of monitoring.

[0012] Optionally, the method further includes steps after obtaining the angle detection value of the anchor bolt, which are as follows: Obtaining the magnetic field strength value of a preset detection area; Determine whether the magnetic field strength value falls within a preset reference magnetic field interval; If and only if the magnetic field intensity value does not fall within the reference magnetic field interval, a magnetic field difference value is matched from a preset magnetic field database according to the magnetic field intensity value and the reference magnetic field interval; Match the magnetic field angle deviation value from the magnetic field database according to the magnetic field difference value; The angle detection value is adjusted according to the magnetic field angle deviation value.

[0013] By adopting the above technical solution, the accuracy of the angle detection value can be known by understanding the situation where the magnetic field strength value falls within the reference magnetic field interval. When the magnetic field strength value does not fall within the reference magnetic field interval, the magnetic field angle deviation value is known by understanding the magnetic field difference value, so as to adjust the angle detection value, thereby improving the accuracy of the angle detection value, and further improving the accuracy of the anchor bolt loosening early warning monitoring.

[0014] Optionally, also include: When the angle detection value is inconsistent with the reference angle value, the current date information and the installation date information of the anchor bolt are obtained; Determine the installation time of the anchor bolt according to the current date information and the installation date information; Determine the installation time of the detection device according to the installation time of the anchor bolt; According to the angle vibration conditions, the benchmark installation time is matched from the preset installation database; Determine whether the installation time of the device exceeds the benchmark installation time; If the installation time of the device does not exceed the benchmark installation time, a report will be issued indicating that the anchor bolt is loose; If the installation time of the device exceeds the benchmark installation time, the acquired angle detection value is discarded and a report is given to indicate that the detection device is damaged.

[0015] By adopting the above technical solution, by understanding the current date information and the installation date information of the anchor bolt, the installation time of the anchor bolt can be known, and then the installation time of the detection device can be known. Then, by understanding the excess between the installation time and the benchmark installation time, the damage of the detection device can be known. When the detection device is damaged, the obtained angle detection value will be abolished and reported to prompt the detection device to be damaged. In this way, the error rate of monitoring is reduced.

[0016] Optionally, also include: Obtain the external vibration conditions in the detection area; Determine the main vibration area based on external vibration conditions and the preset anchor bolt installation area; Determine the vibration impact distance based on the main vibration area and external vibration conditions; According to the vibration impact distance and external vibration conditions, the anchor bolt loosening time is matched from the preset vibration database; Determine the anchor bolt loosening date based on the installation date information and the anchor bolt loosening time; According to the anchor bolt loosening date, a loosening reminder date is matched from a preset date database, and a reminder is given on the loosening reminder date.

[0017] By adopting the above technical solution, the main vibration area is known by understanding the external vibration conditions and the anchor bolt installation area, and then the vibration impact distance is known. Then, by understanding the vibration impact distance and the external vibration conditions, the anchor bolt loosening time is known, and then the anchor bolt loosening date is known. Then, a reminder is issued on the loosening reminder date to remind the staff to check the anchor bolt on site, thereby reducing the probability of the anchor bolt being completely loosened.

[0018] Optionally, also include: When installing anchor bolts, controlling the preset installation equipment to install the anchor bolts into the preset detection area with the preset reference preload force; After installation, obtain the elastic pressure value of the anchor bolt; Determine whether the elastic pressure value is less than a preset reference pressure value; If the elastic pressure value is not less than the reference pressure value, the anchor bolt loosening monitoring is completed; If the elastic pressure value is less than the reference pressure value, a report will be issued indicating that the anchor bolt is abnormally loose.

[0019] By adopting the above technical solution, the anchor bolt is installed into the detection area by applying pre-tightening force to the anchor bolt, and then the loosening of the anchor bolt is known by understanding the relationship between the elastic pressure value of the anchor bolt and the reference pressure value. When the anchor bolt is loose, a prompt is given to improve the accuracy of anchor bolt loosening monitoring.

[0020] Optionally, also include: When the elastic pressure value is less than the reference pressure value, the ambient temperature value of the detection area is obtained; Determine whether the ambient temperature value is consistent with the preset reference temperature value; If and only if the ambient temperature value is inconsistent with the reference temperature value, the difference between the ambient temperature value and the reference temperature value is calculated as the temperature difference value, and whether the temperature difference value is greater than zero is determined; If the temperature difference value is greater than zero, the pressure difference value is matched from the preset positive pressure database according to the temperature difference value; If the temperature difference value is less than zero, the pressure difference value is matched from the preset negative pressure database according to the temperature difference value; Adjust the elastic pressure value according to the pressure difference value; If and only if the adjusted elastic pressure value is still less than the reference pressure value, an abnormal loosening of the anchor bolt is reported.

[0021] By adopting the above technical solution, the deviation of the elastic pressure value can be known by understanding the consistency between the ambient temperature value and the reference temperature value. When the ambient temperature value is inconsistent with the reference temperature value, the pressure difference value is matched by the calculated temperature difference value, and then the elastic pressure value is adjusted. In this way, the accuracy of the elastic pressure value is improved.

[0022] Optionally, also include: The anchor bolt loosening time needs to be calculated using a preset algorithm formula, which is: ,in, is the anchor loosening time, is the angle detection value of the anchor bolt, is the vibration amplitude in the external vibration condition, is the release distance, The maximum displacement of the anchor bolt is completely loose. When the anchor bolt displacement reaches this value, the anchor bolt is completely loose. is the connection stiffness between the anchor bolt and the wall, is the second-order derivative of the anchor bolt displacement with respect to time, is the material quality of the anchor bolt.

[0023] By adopting the above technical solution, the above algorithm formula can more accurately calculate the anchor bolt loosening time, and then can better warn and monitor the loosening of the anchor bolt, thereby improving the accuracy of monitoring the loosening of the anchor bolt.

[0024] In the second aspect, the present application provides an anchor bolt loosening early warning monitoring system, which adopts the following technical solution: An anchor bolt loosening early warning monitoring system, comprising: An acquisition module is used to acquire angle detection values, angle vibration conditions, magnetic field parameters, detection image information, magnetic field strength values, current date information, installation date information, external vibration conditions, elastic pressure values, and ambient temperature values; A memory for storing a program of any of the above anchor bolt loosening early warning monitoring methods; The program in the processor and the memory can be loaded and executed by the processor to implement any of the above-mentioned anchor bolt loosening early warning monitoring methods.

[0025] By adopting the above technical solution, the loosening of the anchor bolt can be known by understanding the consistency between the angle detection value and the reference angle value. When the angle detection value is consistent with the reference angle value, the loosening of the anchor bolt can be further determined by understanding the consistency between the angle vibration and the reference vibration. When the angle vibration is consistent with the reference vibration, the anchor bolt loosening monitoring is completed; when the angle vibration is inconsistent with the reference vibration, it means that the anchor bolt is loose, and the anchor bolt loosening abnormality is reported. This improves the accuracy of monitoring.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. The looseness of the anchor bolt can be known by understanding the consistency between the angle detection value and the reference angle value. When the angle detection value is consistent with the reference angle value, the looseness of the anchor bolt can be further determined by understanding the consistency between the angle vibration and the reference vibration. When the angle vibration is consistent with the reference vibration, the anchor bolt loosening monitoring is completed; when the angle vibration is inconsistent with the reference vibration, it means that the anchor bolt is loose, and the anchor bolt loosening abnormality is reported. This improves the accuracy of monitoring; 2. By understanding the current date information and the installation date information of the anchor bolt, the installation time of the anchor bolt can be known, and then the installation time of the detection device can be known. Then, by understanding the excess between the installation time and the benchmark installation time, the damage of the detection device can be known. When the detection device is damaged, the obtained angle detection value will be abolished and reported to indicate that the detection device is damaged. This reduces the error rate of monitoring; 3. Apply pre-tightening force to the anchor bolt to install it in the detection area, and then know the loosening of the anchor bolt by understanding the relationship between the elastic pressure value of the anchor bolt and the reference pressure value. And when the anchor bolt is loose, it will be prompted to improve the accuracy of anchor bolt loosening monitoring. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a method flow chart of an anchor bolt loosening early warning monitoring method in an embodiment of the present invention; Figure 2 is a method flow chart of a method for verifying an angle detection value in an embodiment of the present invention; Figure 3 is a method flow chart of the steps after the angle detection value and the adjusted angle value are consistent in an embodiment of the present invention; Figure 4 is a method flow chart of the steps after obtaining the angle detection value of the anchor bolt in an embodiment of the present invention; Figure 5 is a method flow chart of the steps after the angle detection value is inconsistent with the reference angle value in an embodiment of the present invention; Figure 6 is a method flow chart of a method for detecting the loosening date of an anchor bolt in an embodiment of the present invention; Figure 7 is a method flow chart of a method for detecting the elastic pressure value of an anchor bolt in an embodiment of the present invention; Figure 8 It is a method flow chart of the steps after the elastic pressure value is less than the reference pressure value in an embodiment of the present invention. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0029] Reference Figure 1 The present application discloses a method for early warning and monitoring of anchor bolt loosening, comprising the following steps: Step 100: Obtain an angle detection value of a preset detection device.

[0030] The detection device refers to an angle sensor used to detect the anchor bolt. The angle detection value refers to the current angle of the anchor bolt. The angle detection value is obtained by the detection device.

[0031] Step 101: Determine whether the angle detection value is consistent with a preset reference angle value.

[0032] The reference angle value refers to the angle value used to assist in determining whether the anchor bolt is loose. The reference angle value is set in advance by a person skilled in the art and will not be described in detail here. By determining whether the angle detection value is consistent with the reference angle value, it is possible to determine whether the anchor bolt is loose.

[0033] Step 1011: If the angle detection value is inconsistent with the reference angle value, a report is issued indicating that the anchor bolt is abnormally loose.

[0034] Anchor bolt loosening abnormality refers to the abnormality of anchor bolt loosening. If the angle detection value is inconsistent with the reference angle value, it means that the anchor bolt is loose. It is necessary to report the abnormality of anchor bolt loosening.

[0035] Step 1012: If the angle detection value is consistent with the reference angle value, control the preset vibration device to vibrate with a preset vibration intensity, and obtain the angle vibration condition of the detection device during the vibration.

[0036] The vibration device refers to a miniature vibrator used to further detect whether the anchor bolt is loose. The vibration intensity refers to the intensity of the vibration of the vibration device. The vibration intensity is set in advance by a technician in this field and will not be described here. The angle vibration condition refers to the vibration change of the angle of the anchor bolt when it vibrates. If the angle detection value is consistent with the reference angle value, it means that the anchor bolt is not loose. The vibration device is controlled to vibrate with the vibration intensity, and the angle vibration condition of the detection device is obtained during the vibration. In this way, the looseness of the anchor bolt can be further detected. The angle vibration condition is obtained by the detection device.

[0037] Step 10121: Determine whether the angle vibration condition is consistent with a preset reference vibration condition.

[0038] The reference vibration condition refers to the vibration condition used to assist in determining whether the anchor bolt is loose. The reference vibration condition is set in advance by a person skilled in the art and will not be described in detail here. By determining whether the angle vibration condition is consistent with the reference vibration condition, it is possible to determine whether the anchor bolt is loose.

[0039] Step 101211: If the angle vibration condition is consistent with the reference vibration condition, the anchor loosening monitoring is completed.

[0040] If the angle vibration is consistent with the reference vibration, it means that the anchor bolt is not loose and the loosening monitoring of the anchor bolt is completed.

[0041] Step 101212: If the angle vibration condition is inconsistent with the reference vibration condition, a report indicating that the anchor bolt is loose is issued.

[0042] If the angle vibration is inconsistent with the baseline vibration, it means that the anchor bolt is loose and it is necessary to report the abnormal loose anchor bolt.

[0043] Reference Figure 2 , the method for verifying the angle detection value includes the following steps: Step 200: When the angle detection value is consistent with the reference angle value, obtain the magnetic field parameters of the preset detection area.

[0044] When the angle detection value is consistent with the reference angle value, the magnetic field parameters of the detection area need to be obtained for subsequent steps. The detection area refers to the area where the anchor bolt is loosened. The detection area is set in advance by a person skilled in the art and will not be described here. The magnetic field parameter refers to the magnetic flux passing through the detection area in the detection area. The magnetic field parameter is obtained by measuring the fluxmeter set in the detection area.

[0045] Step 201: When 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.

[0046] The reference magnetic field parameter refers to a parameter used to assist in determining whether there is an abnormality in the magnetic field parameter within the detection area. By determining whether the magnetic field parameter is consistent with the reference magnetic field parameter, it is known whether there is an abnormality in the magnetic field parameter within the detection area.

[0047] When the magnetic field parameters are inconsistent with the reference magnetic field parameters, it means that there is an abnormality in the magnetic field parameters in the detection area, and the parameter difference value corresponding to the reference magnetic field parameters needs to be matched through the parameter database. The parameter difference value refers to the difference between the magnetic field parameters in the detection area and the magnetic flux in 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 described here.

[0048] When the magnetic field parameters are consistent with the reference magnetic field parameters, it means that there is no abnormality in the magnetic field parameters in the detection area.

[0049] Step 202: Match the current intensity value from a preset current database according to the parameter difference value.

[0050] The current intensity value refers to the current intensity that is used to adjust the magnetic field parameters to be consistent with the reference magnetic field parameters by applying current to the detection device. The current intensity value corresponding to the parameter difference value can be matched through the current database, which 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 described in detail here.

[0051] Step 203: Control the preset current device to emit current with the current intensity value to the preset electromagnetic device on the detection device, and obtain the angle detection value again as the adjusted angle value.

[0052] The current device refers to a device used to apply current to the electromagnetic device. The electromagnetic device refers to a 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, so that the angle detection value obtained can be adjusted. The control current device sends current to the detection device with a current intensity value, and after power is turned on, the angle detection value is obtained again as the adjusted angle value. The adjusted angle value refers to the angle detection value obtained after the detection device is powered on.

[0053] Step 204: Determine whether the angle detection value is consistent with the adjusted angle value.

[0054] By judging whether the angle detection value is consistent with the adjusted angle value, it is known whether the angle detection value is interfered by the magnetic field parameters.

[0055] Step 205: If the angle detection value is consistent with the adjusted angle value, the anchor bolt loosening monitoring is completed.

[0056] If the angle detection value is consistent with the adjusted angle value, it means that the angle detection value is not interfered by the magnetic field parameters, and the anchor loosening monitoring is completed.

[0057] Step 206: If the angle detection value is inconsistent with the adjusted angle value, a report is sent to indicate that the anchor bolt is loose.

[0058] If the angle detection value is inconsistent with the adjusted angle value, it means that the angle detection value is interfered by the magnetic field parameters. Therefore, there is an abnormality in the "angle detection value is consistent with the reference angle value" in the above step 1012, and it is necessary to report the abnormal loosening of the anchor bolt.

[0059] Reference Figure 3 , and further includes steps after the angle detection value is consistent with the adjusted angle value, which are as follows: Step 300: When the angle detection value is consistent with the adjusted angle value, detection image information of the anchor bolt is obtained.

[0060] When the angle detection value is consistent with the adjusted angle value, the detection image information of the anchor bolt needs to be obtained for subsequent steps. The detection image information refers to the image of 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.

[0061] Step 301: Determine whether the detected image information contains a preset anchor rod feature.

[0062] The anchor rod feature refers to the feature of the anchor rod part on the anchor. The anchor rod feature is set in advance by a person skilled in the art and will not be described in detail here. By determining whether the detection image information contains the anchor rod feature, it can be known whether the anchor is loose.

[0063] Step 302: If and only if the detected image information contains the anchor bolt feature, determine the loosening distance according to the detected image information, the anchor bolt feature and the preset anchor bolt size.

[0064] The anchor bolt size refers to the size of the anchor bolt. The anchor bolt size is set in advance by a person skilled in the art and will not be described in detail here. The loosening distance refers to the distance that the anchor bolt is loose from the wall. If and only if the detection image information contains the anchor bolt rod feature, it indicates that the anchor bolt is loose. The detection image information can be used to know the distance that the anchor bolt rod is out of the wall in the detection image information, and then the loosening distance can be known by comparing the anchor bolt size.

[0065] Step 303: Matching a looseness value from a preset looseness database according to the looseness distance.

[0066] The looseness value refers to the degree of rotation required for the anchor bolt to loosen. The looseness value corresponding to the looseness distance can be matched through the looseness database, which includes the corresponding relationship between the looseness distance and the looseness value. The looseness database is a manually set database and will not be repeated here.

[0067] Step 304: Determine the initial angle value according to the looseness value and the angle detection value.

[0068] The initial angle value refers to the angle value after the anchor bolt is loosened after rotation. The initial angle value can be obtained by calculating the formula c=a+(b-360*n)-360*n, where c is the initial angle value, a is the angle detection value, b is the looseness value, and n is the rotation speed of the anchor bolt. n is equal to the integer part of b divided by 360, and no rounding is required.

[0069] Step 305: According to the consistency between the initial angle value and the reference angle value, a report is issued to indicate that the peripheral anchor bolts are abnormally loose.

[0070] The abnormal loosening of peripheral anchor bolts refers to the abnormality that the remaining anchor bolts around the currently detected anchor bolt in the same detection area may be loose. 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 the remaining anchor bolts may be loose.

[0071] If the initial angle value is inconsistent with the reference angle value, it means that the remaining anchor bolts may be loose, and it is necessary to report the abnormal looseness of the surrounding anchor bolts.

[0072] If the initial angle value is consistent with the reference angle value, it means that the remaining anchor bolts are not loose, and the anchor bolt loosening monitoring is completed.

[0073] Reference Figure 4 , further comprising steps after obtaining the angle detection value of the anchor bolt, specifically as follows: Step 400: Obtain the magnetic field strength value of a preset detection area.

[0074] The detection area refers to the area where the anchor bolt is loosened. The detection area is set in advance by a person skilled in the art and will not be described in detail here. The magnetic field strength value refers to the magnetic field strength of the detection area. The magnetic field strength value is measured and obtained by a magnetic field sensor set in the detection area.

[0075] Step 401: Determine whether the magnetic field strength value falls within a preset reference magnetic field interval.

[0076] The reference magnetic field interval refers to a magnetic field strength interval used to assist in determining whether the magnetic field strength in the detection area is abnormal. The reference magnetic field interval is set in advance by those skilled in the art and will not be described in detail here. By determining whether the magnetic field strength value falls within the reference magnetic field interval, it is known whether the magnetic field strength in the detection area is abnormal.

[0077] Step 402: When and only when the magnetic field intensity value does not fall within the reference magnetic field interval, match the magnetic field difference value from a preset magnetic field database according to the magnetic field intensity value and the reference magnetic field interval.

[0078] The magnetic field difference value refers to the difference in magnetic field intensity between the magnetic field intensity value in the detection area and the maximum value or the minimum value of the reference magnetic field interval.

[0079] If and only if the magnetic field strength value does not fall within the reference magnetic field interval, it indicates that the magnetic field strength in the detection area is abnormal, and the magnetic field difference value corresponding to the magnetic field strength value and the reference magnetic field interval needs to be matched through the magnetic field database. The magnetic field database contains the correspondence between the magnetic field strength value, the reference magnetic field interval, and the magnetic field difference value. The magnetic field database is a manually set database and will not be described here.

[0080] If the magnetic field strength value falls within the reference magnetic field interval, it means that there is no abnormality in the magnetic field strength in the detection area, and the magnetic field detection is completed.

[0081] Step 403: Match the magnetic field angle deviation value from the magnetic field database according to the magnetic field difference value.

[0082] The magnetic field angle deviation value refers to the deviation value of the angle detection value caused by the interference of the magnetic field. The magnetic field angle deviation value corresponding to the magnetic field difference value can be matched through the magnetic field database, which includes the corresponding relationship between the magnetic field difference value and the magnetic field angle deviation value.

[0083] Step 404: Adjust the angle detection value according to the magnetic field angle deviation value.

[0084] The angle detection value obtained in step 100 is adjusted using the magnetic field angle deviation value, and steps 101 to 101212 are performed after the adjustment.

[0085] Reference Figure 5 , and also includes the steps after the angle detection value is inconsistent with the reference angle value, which are as follows: Step 500: When the angle detection value is inconsistent with the reference angle value, the current date information and the installation date information of the anchor bolt are obtained.

[0086] When the angle detection value is inconsistent with the reference angle value, the current date information and the installation date information of the anchor bolt need to be obtained for subsequent steps. The current date information refers to the current date for detecting whether the anchor bolt is loose. 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 calling the preset calendar database. The calendar database contains the current date information and the installation date information. The calendar database is a manually set database and will not be described here.

[0087] Step 501: Determine the installation duration of the anchor bolt according to the current date information and the installation date information.

[0088] The anchor installation time refers to the time it takes for the anchor to be installed in the wall. The anchor installation time can be obtained by subtracting the installation date from the current date.

[0089] Step 502: Determine the installation time of the detection device according to the installation time of the anchor bolt.

[0090] The device installation time refers to the time required to install the detection device. Since the detection device and the anchor bolts are installed at the same time, the anchor bolt installation time is the same as the device installation time.

[0091] Step 503: Matching a reference installation duration from a preset installation database according to the angle vibration condition.

[0092] The benchmark installation time refers to the time that the detection device can work perfectly in the anchor bolt. The benchmark installation time 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 benchmark installation time. The installation database is a manually set database and will not be repeated here.

[0093] Step 504: Determine whether the device installation time exceeds the benchmark installation time.

[0094] By judging whether the installation time of the device exceeds the benchmark installation time, it is possible to know whether the detection device is damaged, and then to know whether the angle detection value is accurate.

[0095] Step 5041: If the installation time of the device does not exceed the benchmark installation time, a report is issued indicating that the anchor bolt is loose.

[0096] If the installation time of the device does not exceed the benchmark installation time, it means that the detection device is not damaged, and you can directly report the abnormal loosening of the anchor bolt.

[0097] Step 5042: If the device installation time exceeds the benchmark installation time, the acquired angle detection value is discarded and a report is submitted to indicate that the detection device is damaged.

[0098] If the device installation time exceeds the benchmark installation time, it means that the detection device may be damaged and the angle detection value may be inaccurate. The obtained angle detection value needs to be discarded and a report indicating that the detection device is damaged should be submitted.

[0099] Reference Figure 6 The method for detecting the loosening date of the anchor bolt includes the following steps: Step 600: Obtain the external vibration conditions in the detection area.

[0100] External vibration refers to the frequency, amplitude, area and location of the source of vibration in the detection area caused by external sounds and / or daily actions. The external vibration is obtained by the vibration sensor set in the detection area.

[0101] Step 601: Determine the main vibration area according to the external vibration conditions and the preset anchor bolt installation area.

[0102] The anchor installation area refers to the specific location where the anchor is installed in the detection area, and the anchor installation area is located in the detection area. The anchor installation area is set in advance by technicians in this field and will not be described here. The main vibration area refers to the main area where the vibration affects the anchors in the anchor installation area. The direction of the earthquake source can be known through the external vibration situation, and the overlapping part of the vibration area contained in the external vibration situation and the anchor installation area is used as the vibration area, so as to know which small area in the anchor installation area will be mainly affected by the external vibration.

[0103] Step 602: Determine the vibration impact distance according to the main vibration area and the external vibration conditions.

[0104] The vibration impact distance refers to the distance from the external vibration to the main vibration area. The vibration impact distance corresponding to the main vibration area and the external vibration situation can be matched through the preset distance database, which contains the correspondence between the main vibration area, the external vibration situation and the vibration impact distance. The distance database is a manually set database and will not be elaborated here.

[0105] Step 603: Match the anchor bolt loosening time from a preset vibration database according to the vibration impact distance and the external vibration conditions.

[0106] The anchor bolt loosening time refers to the time it takes for the anchor bolt to loosen due to the influence of vibration. The vibration database can be used to match the anchor bolt loosening time corresponding to the vibration influence distance and the external vibration conditions. It contains the algorithm formula between the vibration influence distance, the external vibration conditions and the anchor bolt loosening time. The vibration database is a manually set database and will not be described here.

[0107] The algorithm formula is: ,in, is the anchor loosening time, is the angle detection value of the anchor bolt, is the vibration amplitude in the external vibration condition, is the release distance, The maximum displacement of the anchor bolt is completely loose. When the anchor bolt displacement reaches this value, the anchor bolt is completely loose. is the connection stiffness between the anchor bolt and the wall, is the second-order derivative of the anchor bolt displacement with respect to time, is the material mass of the anchor bolt, where and The technical personnel in this field can find out by looking up the table through understanding the strength of the material and the strength of the wall. as well as All of them are set in advance by those skilled in the art and will not be described in detail here.

[0108] The above algorithm formula can be used to calculate the approximate anchor bolt loosening time, so as to better monitor the loosening of the anchor bolt.

[0109] Step 604: Determine the anchor bolt loosening date according to the installation date information and the anchor bolt loosening time.

[0110] The anchor bolt loosening date refers to the date when the anchor bolt loosens due to vibration. The anchor bolt loosening date can be obtained by calculating the sum of the installation date information and the anchor bolt loosening time.

[0111] Step 605: Match a loosening reminder date from a preset date database according to the anchor loosening date, and give a reminder on the loosening reminder date.

[0112] The loosening reminder date refers to the date used to remind the staff to check the loosening of the anchor bolt. The loosening reminder date corresponding to the anchor bolt loosening date can be matched through the date database, which contains the corresponding relationship between the anchor bolt loosening date and the loosening reminder date. The date database is a manually set database and will not be repeated here. The staff will be reminded on the loosening reminder date.

[0113] Reference Figure 7 The method for detecting the elastic pressure value of the anchor bolt comprises the following steps: Step 700: When installing the anchor bolt, control a preset installation device to install the anchor bolt into a preset detection area with a preset reference preload force.

[0114] The detection area refers to the area where the anchor bolts are detected for looseness. The reference preload force refers to the preload force applied to the anchor bolts before they are installed into the wall. The detection area and the reference preload force are set in advance by those skilled in the art and are not described in detail here. The installation device refers to a screw gun used to install the anchor bolts into the wall in the detection area. When installing the anchor bolts, the installation device is controlled to install the anchor bolts into the wall of the detection area with the reference preload force.

[0115] Step 701: After installation, obtain the elastic pressure value of the anchor bolt.

[0116] The elastic pressure value refers to the reaction force on the wall caused by the elastic deformation of the anchor bolt after it is subjected to the preload. After the anchor bolt is installed, the elastic pressure value of the anchor bolt is obtained for subsequent steps. The elastic pressure value is obtained through the pressure sensor installed at the bottom of the anchor bolt rod.

[0117] Step 702: Determine whether the elastic pressure value is less than a preset reference pressure value.

[0118] The reference pressure value refers to the elastic pressure value that the anchor bolt should reach after being installed with the reference preload force. The reference pressure value is used to assist in determining whether the elastic pressure value of the anchor bolt is abnormal, and then to determine whether the anchor bolt is loose. The reference pressure value is set in advance by a person skilled in the art and will not be described in detail here. By determining whether the elastic pressure value is less than the reference pressure value, it is possible to determine whether the anchor bolt is loose.

[0119] Step 7021: If the elastic pressure value is not less than the reference pressure value, the anchor loosening monitoring is completed.

[0120] If the elastic pressure value is not less than the reference pressure value, it means that the anchor bolt is not loose and the anchor bolt loosening monitoring is completed.

[0121] Step 7022: If the elastic pressure value is less than the reference pressure value, a report is sent to indicate that the anchor bolt is loose.

[0122] If the elastic pressure value is less than the reference pressure value, it means that the anchor bolt is loose and it is necessary to report the abnormal loosening of the anchor bolt.

[0123] Reference Figure 8 , and further includes the following steps when the elastic pressure value is less than the reference pressure value: Step 800: When the elastic pressure value is less than the reference pressure value, the ambient temperature value of the detection area is obtained.

[0124] When the elastic pressure value is less than the reference pressure value, the ambient temperature value of the detection area needs to be obtained for subsequent steps. The ambient temperature value refers to the temperature value of the detection area. The ambient temperature value can be obtained by setting a temperature sensor in the detection area.

[0125] Step 801: Determine whether the ambient temperature value is consistent with a preset reference temperature value.

[0126] The reference temperature value refers to a temperature value used to assist in determining whether the ambient temperature value is abnormal. The reference temperature value is set in advance by a person skilled in the art and will not be described in detail herein. Whether the ambient temperature value is abnormal can be determined by determining whether the ambient temperature value is consistent with the reference temperature value.

[0127] Step 802: If and only if 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.

[0128] 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 means that the elastic pressure value obtained is wrong. The difference between the ambient temperature value and the reference temperature value needs to be calculated as the temperature difference value.

[0129] Step 8021: If the temperature difference value is greater than zero, the pressure difference value is matched from a preset positive pressure database according to the temperature difference value.

[0130] 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 means that the current temperature difference is high. The pressure difference value corresponding to the high temperature difference can be matched through the positive pressure database, which contains the corresponding relationship between the temperature difference value and the pressure difference value. The positive pressure database is a manually set database and will not be repeated here.

[0131] Step 8022: If the temperature difference value is less than zero, the pressure difference value is matched from the preset negative pressure database according to the temperature difference value.

[0132] When the temperature difference value is less than zero, it indicates that the current temperature difference is low. The pressure difference value corresponding to the low temperature difference can be matched through the negative pressure database, which contains the corresponding relationship between the temperature difference value and the pressure difference value. The negative pressure database is an artificially set database and will not be described here.

[0133] Step 803: Adjust the elastic pressure value according to the pressure difference value.

[0134] The elastic pressure value is adjusted according to the matched pressure difference value, and it is determined again whether the adjusted elastic pressure value is still less than the reference pressure value.

[0135] Step 804: If and only if the adjusted elastic pressure value is still less than the reference pressure value, report that the anchor bolt is loose.

[0136] If and only if the adjusted elastic pressure value is still less than the reference pressure value, it indicates that the anchor bolt is loose and the anchor bolt loosening abnormality needs to be reported.

[0137] If the adjusted elastic pressure value is not less than the reference pressure value, it means that the anchor bolt is not loose and the anchor bolt loosening monitoring is completed.

[0138] Based on the same inventive concept, an embodiment of the present invention provides an anchor bolt loosening early warning monitoring system, comprising: An acquisition module is used to acquire angle detection values, angle vibration conditions, magnetic field parameters, detection image information, magnetic field strength values, current date information, installation date information, external vibration conditions, elastic pressure values, and ambient temperature values; A memory for storing a program of an anchor bolt loosening early warning monitoring method; The program in the memory can be loaded and executed by the processor to implement an anchor bolt loosening early warning monitoring method.

[0139] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional modules is used as an example. In actual applications, the above-mentioned functions can be assigned to different functional modules as needed, 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 process of the system, device and unit described above can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here.

[0140] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A method for early warning and monitoring of anchor bolt loosening, characterized in that: include: Obtaining an angle detection value of a preset detection device; Determine whether the angle detection value is consistent with the preset reference angle value; If the angle detection value is inconsistent with the reference angle value, a report will be issued indicating that the anchor bolt is loose; If the angle detection value is consistent with the reference angle value, the preset vibration device is controlled to vibrate with a preset vibration intensity, and the angle vibration condition of the detection device is obtained during the vibration; Determine whether the angle vibration condition is consistent with the preset reference vibration condition; If the angle vibration is consistent with the reference vibration, the anchor loosening monitoring is completed; If the angle vibration is inconsistent with the reference vibration, a report will be issued indicating that the anchor bolt is loose.

2. The anchor bolt loosening early warning monitoring method according to claim 1 is characterized in that: Also includes: When the angle detection value is consistent with the reference angle value, obtaining magnetic field parameters of the preset detection area; When the magnetic field parameter is inconsistent with the preset reference magnetic field parameter, a parameter difference value is matched from a preset parameter database according to the magnetic field parameter and the reference magnetic field parameter; Matching the current intensity value from a preset current database according to the parameter difference value; Controlling the preset current device to emit current with the current intensity value to the preset electromagnetic device on the detection device, and obtaining 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, the anchor bolt loosening monitoring is completed; If the angle detection value is inconsistent with the adjusted angle value, a report will be issued indicating that the anchor bolt is loose.

3. The anchor bolt loosening early warning monitoring method according to claim 2 is characterized in that: Also includes: When the angle detection value is consistent with the adjusted angle value, the detection image information of the anchor bolt is obtained; Determine whether the detected image information contains preset anchor bolt features; If and only if the detected image information contains the anchor bolt feature, determine the loosening distance according to the detected image information, the anchor bolt feature and the preset anchor bolt size; Matching the looseness value from a preset looseness database according to the looseness distance; Determine the initial angle value based on the looseness value and the angle detection value; According to the consistency between the initial angle value and the reference angle value, the loosening of the surrounding anchor bolts is reported abnormally.

4. The anchor bolt loosening early warning monitoring method according to claim 1 is characterized in that: The steps after obtaining the angle detection value of the anchor bolt are also included, which are as follows: Obtaining the magnetic field strength value of a preset detection area; Determine whether the magnetic field strength value falls within a preset reference magnetic field interval; If and only if the magnetic field intensity value does not fall within the reference magnetic field interval, a magnetic field difference value is matched from a preset magnetic field database according to the magnetic field intensity value and the reference magnetic field interval; Match the magnetic field angle deviation value from the magnetic field database according to the magnetic field difference value; The angle detection value is adjusted according to the magnetic field angle deviation value.

5. The anchor bolt loosening early warning monitoring method according to claim 1 is characterized in that: Also includes: When the angle detection value is inconsistent with the reference angle value, the current date information and the installation date information of the anchor bolt are obtained; Determine the installation time of the anchor bolt according to the current date information and the installation date information; Determine the installation time of the detection device according to the installation time of the anchor bolt; According to the angle vibration conditions, the benchmark installation time is matched from the preset installation database; Determine whether the installation time of the device exceeds the benchmark installation time; If the installation time of the device does not exceed the benchmark installation time, a report will be issued indicating that the anchor bolt is loose; If the installation time of the device exceeds the benchmark installation time, the acquired angle detection value is discarded and a report is given to indicate that the detection device is damaged.

6. The anchor bolt loosening early warning monitoring method according to claim 5 is characterized in that: Also includes: Obtain the external vibration conditions in the detection area; Determine the main vibration area based on external vibration conditions and the preset anchor bolt installation area; Determine the vibration impact distance based on the main vibration area and external vibration conditions; According to the vibration impact distance and external vibration conditions, the anchor bolt loosening time is matched from the preset vibration database; Determine the anchor bolt loosening date based on the installation date information and the anchor bolt loosening time; According to the anchor bolt loosening date, a loosening prompt date is matched from a preset date database, and a prompt is given on the loosening prompt date.

7. The anchor bolt loosening early warning monitoring method according to claim 1 is characterized in that: Also includes: When installing anchor bolts, controlling the preset installation equipment to install the anchor bolts into the preset detection area with the preset reference preload force; After installation, obtain the elastic pressure value of the anchor bolt; Determine whether the elastic pressure value is less than a preset reference pressure value; If the elastic pressure value is not less than the reference pressure value, the anchor bolt loosening monitoring is completed; If the elastic pressure value is less than the reference pressure value, a report will be issued indicating that the anchor bolt is loose.

8. The anchor bolt loosening early warning monitoring method according to claim 7 is characterized in that: Also includes: When the elastic pressure value is less than the reference pressure value, the ambient temperature value of the detection area is obtained; Determine whether the ambient temperature value is consistent with the preset reference temperature value; If and only if the ambient temperature value is inconsistent with the reference temperature value, the difference between the ambient temperature value and the reference temperature value is calculated as the temperature difference value, and whether the temperature difference value is greater than zero is determined; If the temperature difference value is greater than zero, the pressure difference value is matched from the preset positive pressure database according to the temperature difference value; If the temperature difference value is less than zero, the pressure difference value is matched from the preset negative pressure database according to the temperature difference value; Adjust the elastic pressure value according to the pressure difference value; If and only if the adjusted elastic pressure value is still less than the reference pressure value, an abnormal loosening of the anchor bolt is reported.

9. The anchor bolt loosening early warning monitoring method according to claim 6, characterized in that: The anchor bolt loosening time needs to be calculated using a preset algorithm formula, which is: ,in, is the anchor loosening time, is the angle detection value of the anchor bolt, is the vibration amplitude in the external vibration condition, is the release distance, The maximum displacement of the anchor bolt is completely loose. When the anchor bolt displacement reaches this value, the anchor bolt is completely loose. is the connection stiffness between the anchor bolt and the wall, is the second-order derivative of the anchor bolt displacement with respect to time, is the material quality of the anchor bolt.

10. An anchor bolt loosening early warning monitoring system, characterized in that: include: An acquisition module is used to acquire angle detection values, angle vibration conditions, magnetic field parameters, detection image information, magnetic field strength values, current date information, installation date information, external vibration conditions, elastic pressure values, and ambient temperature values; A memory for storing a program of an anchor loosening early warning monitoring method according to any one of claims 1 to 9; The program in the processor memory can be loaded and executed by the processor to implement an anchor loosening early warning monitoring method as described in any one of claims 1 to 9.

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