CN113048937A - Large pendulum bob deformation monitoring system and method - Google Patents
Large pendulum bob deformation monitoring system and method Download PDFInfo
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- CN113048937A CN113048937A CN202110274927.4A CN202110274927A CN113048937A CN 113048937 A CN113048937 A CN 113048937A CN 202110274927 A CN202110274927 A CN 202110274927A CN 113048937 A CN113048937 A CN 113048937A
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Abstract
The embodiment of the application discloses a large pendulum bob deformation monitoring system and a method, wherein the system comprises a large pendulum bob, an acceleration sensor and an upper computer; the large pendulum comprises a support frame, a rotating shaft and a swinging unit, the support frame comprises a first support frame and a second support frame, the top ends of the first support frame and the second support frame are fixedly connected through the rotating shaft, the swinging unit is rotatably connected with the rotating shaft, so that the swinging unit can swing around the rotating shaft in a neutral plane, and the first support frame and the second support frame are symmetrically arranged relative to the neutral plane; the number of the acceleration sensors is M groups, the number of the acceleration sensors in each group is two, the two acceleration sensors in the same group are symmetrically arranged relative to the neutral plane, and M is more than or equal to 1; the upper computer is used for collecting vibration signals detected by each acceleration sensor; and determining the deformation information of the large pendulum bob according to the comparison result of the vibration signals of the symmetrically arranged acceleration sensors.
Description
Technical Field
The application relates to the technical field of equipment monitoring, in particular to a large pendulum bob deformation monitoring system and method.
Background
With the increasing living standard of people, more and more people are willing to put time and energy into leisure and entertainment, and the demand on amusement facilities is also larger and larger, such as large pendulums in amusement parks and the like. However, the amusement facilities have poor design and manufacturing quality, and in addition, the life safety of amusement personnel is seriously threatened because of great potential safety hazards caused by fatigue damage, operation faults and the like.
The large pendulum bob is used as a high-altitude and exciting large-scale amusement facility and is popular with people. However, there is also a greater risk of tilting or collapsing due to the violent movement of the large pendulum. To the potential safety hazard of big pendulum, mainly carry out the periodic overhaul to big pendulum through the manual work among the prior art, realize the safety monitoring of big pendulum, but overhaul not only need consume great manpower through the manual work, take place easily moreover and leak the inspection.
Disclosure of Invention
The embodiment of the application provides a large pendulum bob chassis looseness monitoring method and system to be favorable for solving the problems that in the prior art, a large pendulum bob needs to be overhauled through manpower, and missing detection easily occurs.
In a first aspect, an embodiment of the present application provides a large pendulum bob deformation detection system, including: the large pendulum bob, the acceleration sensor and the upper computer;
the large pendulum comprises a support frame, a rotating shaft and a swinging unit, the support frame comprises a first support frame and a second support frame, the top ends of the first support frame and the second support frame are fixedly connected through the rotating shaft, the swinging unit is rotatably connected with the rotating shaft, so that the swinging unit can swing around the rotating shaft in a neutral plane, and the first support frame and the second support frame are symmetrically arranged relative to the neutral plane;
the number of the acceleration sensors is M groups, the M groups of acceleration sensors are arranged on the support frame, the number of each group of acceleration sensors is two, the two acceleration sensors in the same group are symmetrically arranged relative to the neutral plane, and M is more than or equal to 1;
the upper computer is used for collecting vibration signals detected by each acceleration sensor; and determining the deformation information of the large pendulum bob according to the comparison result of the vibration signals of the symmetrically arranged acceleration sensors.
Preferably, the determining deformation information of the large pendulum according to the comparison result of the vibration signals of the symmetrically arranged acceleration sensors includes:
calculating the difference value of the vibration signals of two acceleration sensors in a first group, wherein the first group is any one of the M groups of acceleration sensors;
and if the difference calculation result is greater than or equal to a preset difference threshold value, determining that the large pendulum bob has deformation.
Preferably, if the difference calculation result is greater than or equal to a preset difference threshold, determining that the large pendulum is deformed, including:
if the difference calculation result is greater than or equal to a preset difference threshold value and the vibration signal of the first acceleration sensor is greater than or equal to a preset vibration signal threshold value, determining that the large pendulum bob is deformed;
the first acceleration sensor is an acceleration sensor with a larger vibration signal in the first group.
Preferably, the large pendulum is divided into an a region and a B region with the swing plane as a boundary;
the upper computer is further used for determining that the position of the large pendulum is deformed as an area A if the first acceleration sensor is located in the area A; and if the first acceleration sensor is positioned in the B area, determining that the position of the large pendulum with deformation is the B area.
Preferably, the a region is divided into a1 region and a2 region, and the B region is divided into a B1 region and a B2 region, with a second plane as a boundary line, the second plane being perpendicular to the neutral plane and passing through the central axis of the rotation shaft;
the host computer still is used for, if first acceleration sensor is located A region, then confirms that big pendulum has the position of deformation to be A region, include: if the first acceleration sensor is located in the area A1, determining that the position where the large pendulum bob deforms is the area A1; if the first acceleration sensor is located in the area A2, determining that the position where the large pendulum bob deforms is the area A2;
if the first acceleration sensor is located in the area B, determining that the position of the large pendulum with deformation is the area B, including: if the first acceleration sensor is located in a B1 area, determining that the position where the large pendulum bob is deformed is a B1 area; and if the first acceleration sensor is located in the B2 area, determining that the position where the large pendulum bob is deformed is the B2 area.
In a second aspect, an embodiment of the present application provides a large pendulum deformation detection method, which is applied to the system described in any one of the above first aspects, and the method includes:
collecting a vibration signal detected by each acceleration sensor;
and determining the deformation information of the large pendulum bob according to the comparison result of the vibration signals of the symmetrically arranged acceleration sensors.
Preferably, the determining deformation information of the large pendulum according to the comparison result of the vibration signals of the symmetrically arranged acceleration sensors includes:
calculating the difference value of the vibration signals of two acceleration sensors in a first group, wherein the first group is any one of the M groups of acceleration sensors;
and if the difference calculation result is greater than or equal to a preset difference threshold value, determining that the large pendulum bob has deformation.
Preferably, if the difference calculation result is greater than or equal to a preset difference threshold, determining that the large pendulum is deformed, including:
if the difference calculation result is greater than or equal to a preset difference threshold value and the vibration signal of the first acceleration sensor is greater than or equal to a preset vibration signal threshold value, determining that the large pendulum bob is deformed;
the first acceleration sensor is an acceleration sensor with a larger vibration signal in the first group.
Preferably, the large pendulum is divided into an a region and a B region with the swing plane as a boundary, and after determining that there is deformation in the large pendulum, the method further includes:
if the first acceleration sensor is located in the area A, determining that the position of the large pendulum bob with deformation is located in the area A;
and if the first acceleration sensor is positioned in the B area, determining that the position of the large pendulum with deformation is the B area.
Preferably, the a region is divided into a1 region and a2 region, and the B region is divided into a B1 region and a B2 region, with a second plane as a boundary line, the second plane being perpendicular to the neutral plane and passing through the central axis of the rotation shaft;
if the first acceleration sensor is located in the area A, determining that the position of the large pendulum with deformation is located in the area A, including: if the first acceleration sensor is located in the area A1, determining that the position where the large pendulum bob deforms is the area A1; if the first acceleration sensor is located in the area A2, determining that the position where the large pendulum bob deforms is the area A2;
if the first acceleration sensor is located in the area B, determining that the position of the large pendulum with deformation is the area B, including: if the first acceleration sensor is located in a B1 area, determining that the position where the large pendulum bob is deformed is a B1 area; and if the first acceleration sensor is located in the B2 area, determining that the position where the large pendulum bob is deformed is the B2 area.
The technical scheme provided by the embodiment of the application has the following advantages:
(1) the deformation condition of the large pendulum bob is detected in real time through the detection system, so that the labor is saved, the reliability is higher, and the safety of the large pendulum bob is improved;
(2) this application embodiment carries out the monitoring that becomes more meticulous to big pendulum deformation condition, can reduce the influence to big pendulum work continuity when guaranteeing big pendulum security, sparingly overhauls the resource.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic perspective view of a large pendulum provided in an embodiment of the present application;
FIG. 2 is a top view of a large pendulum provided in an embodiment of the present application;
fig. 3 is a schematic diagram of an arrangement of an acceleration sensor according to an embodiment of the present disclosure;
FIG. 4 is a schematic flow chart of a large pendulum bob deformation detection method according to an embodiment of the present disclosure;
the symbols in the figures are represented as: 101-swing unit, 102-first support frame, 103-second support frame, 104-rotation axis.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The big pendulum deformation detecting system that this application embodiment provided includes: big pendulum, acceleration sensor and host computer.
Fig. 1 is a schematic perspective view of a large pendulum according to an embodiment of the present disclosure, and as shown in fig. 1, the large pendulum includes a support frame, a rotating shaft 104, and a swinging unit 101, the support frame includes a first support frame 102 and a second support frame 103, top ends of the first support frame 102 and the second support frame 103 are fixedly connected through the rotating shaft 104, and the swinging unit 101 and the rotating shaft 104 are rotatably connected, so that the swinging unit 101 can swing in a neutral plane around the rotating shaft 104.
Fig. 2 is a top view of a large pendulum according to an embodiment of the present disclosure, and as shown in fig. 2, the first support frame 102 and the second support frame 103 are symmetrically disposed with respect to a neutral plane, which is a swinging plane of the swinging unit 101, and in the viewing angle shown in fig. 2, the swinging unit 101 swings up and down in the neutral plane in the direction of the arrow shown in fig. 2. For illustrative purposes, a second plane is also defined in fig. 2, which is perpendicular to the neutral plane and passes through the central axis of the rotating shaft 104. The mutually perpendicular neutral plane and second plane divide the large pendulum into the area A1, the area A2, the area B1 and the area B2, and the area division facilitates the positioning of the deformation position. Of course, a person skilled in the art may also divide the large pendulum mass into two regions, i.e., an a region and a B region, according to the neutral plane alone, or further divide the large pendulum mass into more regions according to the third plane, which is not specifically limited in this application.
Fig. 3 is a schematic diagram of an arrangement of acceleration sensors provided in an embodiment of the present application, and fig. 3 shows 4 sets of acceleration sensors, each set including two acceleration sensors, namely a first set a1 and a2, a second set b1 and b2, a third set c1 and c2, and a fourth set d1 and d 2. It is to be noted that, in the present embodiment, two acceleration sensors in the same group are symmetrically disposed with respect to the neutral plane. For example, in the first group, the acceleration sensor a1 and the acceleration sensor a2 are symmetrically disposed with respect to the neutral plane; in the second group, the acceleration sensor b1 and the acceleration sensor b2 are disposed symmetrically with respect to the neutral plane.
It should be noted that the number of the acceleration sensors is not particularly limited in the embodiments of the present application, and it is understood that the acceleration sensors should include at least one group. The acceleration sensor is used for detecting a vibration signal of the position where the acceleration sensor is located.
The upper computer provided by the embodiment of the application is used for acquiring the vibration signal detected by each acceleration sensor; and determining the deformation information of the large pendulum bob according to the comparison result of the vibration signals of the symmetrically arranged acceleration sensors, and the detailed description is given below by combining a large pendulum bob deformation detection method.
Fig. 4 is a schematic flow chart of a large pendulum deformation detection method according to an embodiment of the present application, where the method can be applied to the large pendulum deformation detection systems shown in fig. 1 to fig. 3. As shown in fig. 4, it mainly includes the following steps.
Step S401: and collecting the vibration signal detected by each acceleration sensor.
For example, in the embodiment shown in fig. 3, 4 sets of acceleration sensors are included, and each set includes 2 acceleration sensors, so that the vibration signals detected by 8 acceleration sensors need to be collected.
Step S402: and determining the deformation information of the large pendulum bob according to the comparison result of the vibration signals of the symmetrically arranged acceleration sensors.
It can be understood that, in a normal condition, when the swing unit swings, the difference of the vibration signals detected by the two acceleration sensors symmetrically arranged relative to the neutral plane is small; however, when the large pendulum bob is loosened, the symmetrical structure on the two sides of the neutral plane is broken, so that the difference of the vibration signals detected by the two acceleration sensors symmetrically arranged relative to the neutral plane is small. Based on the principle, the deformation information of the large pendulum bob can be determined according to the comparison result of the vibration signals of the symmetrically arranged acceleration sensors.
For example, the vibration signals of the acceleration sensor a1 and the acceleration sensor a2 in the first group are subjected to difference calculation, and if the difference calculation result is greater than or equal to a preset difference threshold value, the large pendulum bob is determined to have deformation.
It can be understood that a plurality of sets of acceleration sensors can be arranged on the large pendulum, and when the difference calculation result of any set of acceleration sensors is greater than or equal to a preset difference threshold value, the large pendulum can be considered to have deformation.
In an alternative embodiment, different deformation levels can be set for a large pendulum. For example, when there are two or more sets of acceleration sensor difference calculation results greater than or equal to a preset difference threshold, indicating that the large bob has been severely deformed, the deformation level is determined to be the first level. When the difference calculation result of the acceleration sensors in one group is larger than or equal to the preset difference threshold value, the large pendulum bob is only slightly deformed, and the deformation grade is determined to be the second grade.
And the deformation level corresponding to the first grade is greater than the second grade. The large pendulum can be differentially controlled based on the deformation level. For example, if the deformation grade of the large pendulum is a first grade, the large pendulum is controlled to be stopped for maintenance; and if the deformation grade of the large pendulum bob is the second grade, stopping the machine for maintenance after the large pendulum bob finishes the preset item. That is to say, when the difference calculation results of two or more groups of acceleration sensors are greater than or equal to the preset difference threshold, the risk of the large pendulum overturning is high, and the large pendulum is immediately stopped for maintenance; when the difference calculation result of the acceleration sensor is larger than or equal to the preset difference threshold value, the large pendulum bob has low overturning risk, and the large pendulum bob is stopped and overhauled after finishing the preset project, so that the working continuity of the large pendulum bob is ensured. The preset items can be items in a certain time period, for example, the large pendulum bob is overhauled after the playground finishes business, or a series of motion items set for the large pendulum bob, and after the large pendulum bob finishes the set motion items, the tourists leave from the large pendulum bob and then stop to overhaul. The person skilled in the art can make corresponding adjustments according to actual needs, which should be considered to fall within the scope of protection of the present application.
In order to improve the reliability of the system and avoid causing false detection, in the embodiment of the application, after the comparison of the acceleration sensors symmetrically arranged on two sides of the neutral plane is completed, the acceleration sensor with a larger vibration signal is compared with the preset vibration signal threshold value again. Specifically, if the difference calculation result is greater than or equal to a preset difference threshold value and the vibration signal of the first acceleration sensor is greater than or equal to a preset vibration signal threshold value, it is determined that the large pendulum bob has deformation. The first acceleration sensor is an acceleration sensor with a larger vibration signal in the first group.
For example, the vibration signals of the acceleration sensor a1 and the acceleration sensor a2 in the first group are subjected to difference calculation, if the difference calculation result is greater than or equal to a preset difference threshold value, and the vibration signal of the acceleration sensor a1 is greater than that of the acceleration sensor a2, the vibration signal of the acceleration sensor a1 is compared with the preset vibration signal threshold value, and if the vibration signal of the acceleration sensor a1 is greater than or equal to the preset vibration signal threshold value, the large pendulum is determined to have deformation.
In addition, in order to facilitate the location of the deformation position, the embodiment of the application divides the large pendulum into different areas. For example, the large pendulum is divided into an a region and a B region with the swing plane as a boundary, and after determining that there is deformation in the large pendulum, the method further includes: if the first acceleration sensor is located in the area A, determining that the position of the large pendulum bob with deformation is located in the area A; and if the first acceleration sensor is positioned in the B area, determining that the position of the large pendulum with deformation is the B area.
The large pendulum is divided into 4 regions in the embodiment shown in fig. 3. Specifically, the a region is divided into a1 region and a2 region, and the B region is divided into a B1 region and a B2 region, with a second plane as a boundary line, the second plane being perpendicular to the neutral plane and passing through the center axis of the rotation shaft. If the first acceleration sensor is located in the area A1, determining that the position where the large pendulum bob deforms is the area A1; if the first acceleration sensor is located in the area A2, determining that the position where the large pendulum bob deforms is the area A2; if the first acceleration sensor is located in the area B, determining that the position of the large pendulum with deformation is the area B, including: if the first acceleration sensor is located in a B1 area, determining that the position where the large pendulum bob is deformed is a B1 area; and if the first acceleration sensor is located in the B2 area, determining that the position where the large pendulum bob is deformed is the B2 area.
For example, if the difference calculation result between the acceleration sensor c1 and the acceleration sensor c2 in the third group is greater than or equal to the preset difference threshold, and the vibration signal of the acceleration sensor c1 is greater than that of the acceleration sensor c2, which indicates that the position of the acceleration sensor c1 is deformed, that is, the a2 area is deformed, the a2 area can be inspected, and the inspection efficiency is improved.
It should be noted that, since the oscillating member oscillates in the neutral plane when the large pendulum bob is operated, the deformation condition can be determined only from the vibration signals of the acceleration sensors symmetrically disposed with respect to the neutral plane, but not from the vibration signals of the acceleration sensors symmetrically disposed with respect to the second plane. For example, the acceleration sensor a1 and the acceleration sensor c1 are symmetrically disposed with respect to the second plane, but the deformation condition cannot be judged from the vibration signals of the acceleration sensor a1 and the acceleration sensor c 1. This is because the motion of the swing unit itself causes different vibration conditions at the positions of the acceleration sensor a1 and the acceleration sensor c 1.
In addition to the above components, in an alternative embodiment, the large pendulum deformation detection system further comprises a charge amplifier and a data acquisition tester.
The charge amplifier is connected with the acceleration sensor and used for amplifying vibration signals collected by the acceleration sensor; the host computer is used for gathering the vibration signal that every acceleration sensor detected, specifically is: and the upper computer is used for collecting the vibration signals amplified by each charge amplifier. The data acquisition tester is used for measuring the amplified vibration signal; the host computer is used for gathering the vibration signal after every charge amplifier enlargies, specifically is: the upper computer is used for collecting the vibration signals amplified by each charge amplifier through the data collection tester.
The acceleration sensor, the charge amplifier, the data acquisition tester, and the upper computer according to the embodiments of the present application will be described in detail below.
(1) Acceleration sensor
The acceleration sensor that this application embodiment relates to can be piezoelectric type acceleration sensor, can adopt the mode of gluing to connect to install in being monitored the object surface, can adopt epoxy or ordinary flexible glue when gluing. After the monitored object is stressed, the surface of the monitored object can generate piezoelectric effects of different charges, and the principle is that a vibration signal is converted into an electric signal: when the external force is larger, the generated electric charge amount is larger; similarly, when the external force is small, the generated charge amount is small.
The piezoelectric acceleration sensor has the biggest characteristic of extremely wide frequency response range, and the highest frequency response range can reach dozens of KHz. In order to improve the measuring accuracy, the acceleration sensor needs to be installed on the surface with stable structure, higher contact surface flatness and smaller surrounding environment interference, wherein the epoxy resin not only can play a role in bonding, but also can enable the surface of the monitored object to be smooth, and the monitoring result is more accurate and reliable.
(2) Charge amplifier
In actual monitoring, the piezoelectric acceleration sensor has small electric charge amount generated by bolt vibration and high output impedance. For this purpose, the piezoelectric acceleration sensor signal is usually first input to a preamplifier (i.e. a charge amplifier) with high input impedance for amplification. After impedance conversion, the impedance conversion can be used in a general indicating instrument or a recorder. The purpose of such a preamplifier is to minimize leakage of charge from the wires and circuitry, and to be substantially immune to cable capacitance. The output voltage after passing through the charge amplifier is:
wherein q is the output charge of the piezoelectric acceleration sensor, CfIs a capacitor, U0The sensitivity of the charge amplifier is not influenced by the capacitance of the cable, and the measured signal quality is better.
(3) Data acquisition tester
The data acquisition tester is a multifunctional intelligent instrument with a communication interface and program control, can directly measure acceleration signals and can also control and output the acceleration signals through a corresponding control module. Through the corresponding communication interface, the dynamic data acquisition tester can form a vibration measurement data test analysis system suitable for various fields together with an acceleration sensor, a preprocessor, a computer and other equipment, and has strong data output and data processing capabilities.
(4) Upper computer
The upper computer is responsible for collecting the position information and the vibration information of the measured object, and the information is subjected to data processing to determine the deformation information of the large pendulum bob.
In an alternative embodiment, the upper computer may further obtain a required vibration frequency variation graph, and the basic monitoring parameters include: real-time waveform display, real-time acceleration display, etc.
In an optional embodiment, the upper computer can visually and explicitly display the monitored basic information, real-time data, historical data, vibration degree and the like, can visually display the real-time change condition of the measured object to a user, and further knows the deformation condition of the large pendulum bob.
In the embodiment of the application, the deformation condition of the large pendulum bob is detected in real time through the detection system, so that the labor is saved, the reliability is higher, and the safety of the large pendulum bob is improved; in addition, this application embodiment carries out the monitoring that becomes more meticulous to big pendulum deformation condition, can reduce the influence to big pendulum work continuity when guaranteeing big pendulum security, saves and overhauls the resource.
In specific implementation, the present application further provides a computer storage medium, where the computer storage medium may store a program, and the program may include some or all of the steps in the embodiments provided in the present application when executed. The storage medium may be a magnetic disk, an optical disk, a read-on-ly memory (ROM) or a Random Access Memory (RAM).
Those skilled in the art will clearly understand that the techniques in the embodiments of the present application may be implemented by way of software plus a required general hardware platform. Based on such understanding, the technical solutions in the embodiments of the present application may be essentially implemented or a part contributing to the prior art may be embodied in the form of a software product, which may be stored in a storage medium, such as a ROM/RAM, a magnetic disk, an optical disk, etc., and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method described in the embodiments or some parts of the embodiments of the present application.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
The same and similar parts in the various embodiments in this specification may be referred to each other. Especially, for the terminal embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant points can be referred to the description in the method embodiment.
The above-described embodiments of the present application do not limit the scope of the present application.
Claims (10)
1. A large pendulum bob deformation detection system, comprising: the large pendulum bob, the acceleration sensor and the upper computer;
the large pendulum comprises a support frame, a rotating shaft and a swinging unit, the support frame comprises a first support frame and a second support frame, the top ends of the first support frame and the second support frame are fixedly connected through the rotating shaft, the swinging unit is rotatably connected with the rotating shaft, so that the swinging unit can swing around the rotating shaft in a neutral plane, and the first support frame and the second support frame are symmetrically arranged relative to the neutral plane;
the number of the acceleration sensors is M groups, the M groups of acceleration sensors are arranged on the support frame, the number of each group of acceleration sensors is two, the two acceleration sensors in the same group are symmetrically arranged relative to the neutral plane, and M is more than or equal to 1;
the upper computer is used for collecting vibration signals detected by each acceleration sensor; and determining the deformation information of the large pendulum bob according to the comparison result of the vibration signals of the symmetrically arranged acceleration sensors.
2. The system of claim 1, wherein the determining deformation information of the large pendulum bob according to the comparison result of the vibration signals of the symmetrically arranged acceleration sensors comprises:
calculating the difference value of the vibration signals of two acceleration sensors in a first group, wherein the first group is any one of the M groups of acceleration sensors;
and if the difference calculation result is greater than or equal to a preset difference threshold value, determining that the large pendulum bob has deformation.
3. The system of claim 2, wherein determining that the large bob has a deformation if the difference calculation is greater than or equal to a preset difference threshold comprises:
if the difference calculation result is greater than or equal to a preset difference threshold value and the vibration signal of the first acceleration sensor is greater than or equal to a preset vibration signal threshold value, determining that the large pendulum bob is deformed;
the first acceleration sensor is an acceleration sensor with a larger vibration signal in the first group.
4. The system according to claim 3, characterized in that the large pendulum is divided into a region A and a region B with the swing plane as a boundary;
the upper computer is further used for determining that the position of the large pendulum is deformed as an area A if the first acceleration sensor is located in the area A; and if the first acceleration sensor is positioned in the B area, determining that the position of the large pendulum with deformation is the B area.
5. The system according to claim 4, wherein the A region is divided into an A1 region and an A2 region, and the B region is divided into a B1 region and a B2 region, with a second plane as a boundary line, the second plane being perpendicular to the neutral plane and passing through the central axis of the rotation shaft;
the host computer still is used for, if first acceleration sensor is located A region, then confirms that big pendulum has the position of deformation to be A region, include: if the first acceleration sensor is located in the area A1, determining that the position where the large pendulum bob deforms is the area A1; if the first acceleration sensor is located in the area A2, determining that the position where the large pendulum bob deforms is the area A2;
if the first acceleration sensor is located in the area B, determining that the position of the large pendulum with deformation is the area B, including: if the first acceleration sensor is located in a B1 area, determining that the position where the large pendulum bob is deformed is a B1 area; and if the first acceleration sensor is located in the B2 area, determining that the position where the large pendulum bob is deformed is the B2 area.
6. A large pendulum bob deformation detection method, applied to the system of any one of claims 1-5, the method comprising:
collecting a vibration signal detected by each acceleration sensor;
and determining the deformation information of the large pendulum bob according to the comparison result of the vibration signals of the symmetrically arranged acceleration sensors.
7. The method according to claim 6, wherein the determining deformation information of the large pendulum bob according to the comparison result of the vibration signals of the symmetrically arranged acceleration sensors comprises:
calculating the difference value of the vibration signals of two acceleration sensors in a first group, wherein the first group is any one of the M groups of acceleration sensors;
and if the difference calculation result is greater than or equal to a preset difference threshold value, determining that the large pendulum bob has deformation.
8. The method of claim 7, wherein determining that the large bob is deformed if the difference calculation is greater than or equal to a preset difference threshold comprises:
if the difference calculation result is greater than or equal to a preset difference threshold value and the vibration signal of the first acceleration sensor is greater than or equal to a preset vibration signal threshold value, determining that the large pendulum bob is deformed;
the first acceleration sensor is an acceleration sensor with a larger vibration signal in the first group.
9. The method according to claim 8, wherein the large pendulum is divided into an a region and a B region with the swing plane as a boundary, and after determining that there is deformation in the large pendulum, the method further comprises:
if the first acceleration sensor is located in the area A, determining that the position of the large pendulum bob with deformation is located in the area A;
and if the first acceleration sensor is positioned in the B area, determining that the position of the large pendulum with deformation is the B area.
10. The method according to claim 9, wherein the a region is divided into a1 region and a2 region and the B region is divided into a B1 region and a B2 region with a second plane as a boundary line, the second plane being perpendicular to the neutral plane and passing through the central axis of the rotation shaft;
if the first acceleration sensor is located in the area A, determining that the position of the large pendulum with deformation is located in the area A, including: if the first acceleration sensor is located in the area A1, determining that the position where the large pendulum bob deforms is the area A1; if the first acceleration sensor is located in the area A2, determining that the position where the large pendulum bob deforms is the area A2;
if the first acceleration sensor is located in the area B, determining that the position of the large pendulum with deformation is the area B, including: if the first acceleration sensor is located in a B1 area, determining that the position where the large pendulum bob is deformed is a B1 area; and if the first acceleration sensor is located in the B2 area, determining that the position where the large pendulum bob is deformed is the B2 area.
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