Microseismic detection device for anti-seismic detection and detection method thereof

Abstract

The application provides a kind of anti-seismic detection microseismic detection device and its detection method, and the anti-seismic detection microseismic detection device includes: vibration source, support structure, platform and control system, support structure is arranged on its periphery with vibration source as center, platform is supported by support structure constant support and is supported on support structure, vibration source top has vibration film, vibration film is connected to the bottom surface of platform, to drive platform vibration, platform top surface is used to place test body for anti-seismic detection, a plurality of first inductors are provided on the platform, and the first inductor is electrically connected to the control system, so that the control system can receive the vibration data fed back by the platform.The anti-seismic detection microseismic detection device provided by the application can drive large weight objects to simulate vibration with small power vibration source, which greatly reduces the manufacturing cost.

Description

Technical Field

[0001] This invention relates to the field of earthquake-resistant equipment technology, specifically to a microseismic detection device and its detection method for earthquake-resistant testing. Background Technology

[0002] Microseismic testing simulates real vibrations for seismic resistance testing. The amplitude of microseismic vibrations is generally within 20mm, and the vibration frequency is between 1-1000Hz. By using the seismic performance data of objects obtained through microseismic testing, it can be amplified to larger-scale vibrations to determine the object's seismic resistance performance under high-intensity vibrations such as earthquakes. During microseismic testing, the object is placed on a platform, and then the platform vibrates to determine the object's response to the vibration and observe the object's stability, such as whether it shakes violently or collapses, thereby testing the object's seismic resistance. Microseismic testing is widely used in industries such as construction, equipment manufacturing, and geological monitoring. Existing microseismic testing devices mainly consist of an integrated vibration source and platform, with the platform mounted on top of the vibration source. The vibrating element of the vibration source connects to and supports the platform. Therefore, the vibrating element needs to bear the weight of the object and have sufficient driving force to vibrate it. Such vibration testing devices have limited load-bearing capacity; for example, a 10-ton object requires a vibrating element capable of supporting 10 tons to vibrate. Currently, there are few devices in the industry capable of supporting heavy objects for vibration testing, especially those exceeding 10 tons, and these devices are also very expensive. For example, the vibration table and vibration testing device disclosed in CN202010606448.3 test by placing the object on a pressure-bearing platform. If a certain tonnage weight is placed on it, microseismic testing cannot be performed. Furthermore, the seismic testing equipment for buildings disclosed in CN202120784257 also uses a single body and cannot achieve high-frequency microseismic testing of large-tonnage objects.

[0003] In addition, for micro-vibration detection devices where the vibration source and platform are integrated, the vibration source is located below the center of the platform, and the size of the platform cannot be too large. Otherwise, if the center of gravity of the object being tested is not aligned with the vibration source, the micro-vibration detection device may collapse during vibration. Furthermore, for larger objects, if the platform is not large enough to accommodate them, it is impossible to conduct seismic tests on large objects. Summary of the Invention

[0004] In view of the above, it is necessary for the present invention to provide a micro-vibration detection device that can reduce costs and enable seismic testing of heavy objects.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A kind of anti-seismic detection microseismic detection device for detection, including: vibration source, support structure, platform and control system, support structure is arranged in its periphery with vibration source as center, platform is lifted and is supported with constant support force by support structure and is supported on support structure, vibration source top has vibration film, vibration film is connected to the bottom surface of platform, to drive platform vibration, platform top surface is used to place the test body that needs anti-seismic detection, platform is equipped with a plurality of first inductor, first inductor is electrically connected control system, to receive the vibration data that platform feedback is controlled by control system.

[0007] Further, the support structure includes support column, cylinder, air film and connecting piece, the support column is provided with chamber, the gas source is communicated with the chamber, the cylinder is installed at the top end of the support column, including the open end upward air pressure cavity, the air pressure cavity is communicated with the chamber, the air film is fixed in the open end of the air pressure cavity, the connecting piece is installed on the center area of the upper surface of the air film, the pressure change in the chamber drives the air film vibration, and is transmitted to the connecting piece.

[0008] Further, the air pressure cavity is installed with telescopic guide column, the telescopic guide column includes sleeve and lifting rod, the sleeve is fixed in the bottom end of the air pressure cavity, the lower end of the lifting rod is inserted into the sleeve, the top end extends upward and abuts against the air film, and the sleeve is provided with air hole, the air hole is communicated with the sleeve and the air pressure cavity.

[0009] Further, the air film is provided as flexible air film, and the air film is formed with wave ring, the connecting piece is fixed in the center of the wave ring, the connecting piece includes connecting block and connecting plate, the bottom surface of the connecting block is fixedly connected to the upper surface of the air film and located in the wave ring of the air film, and the connecting plate is arranged at the top end of the connecting block to support the platform and fixedly connected to the connecting plate.

[0010] Further, the third inductor is installed on the connecting plate to sense the position of the connecting plate, and the third inductor is electrically connected to the control system.

[0011] Further, the vibration source includes a main body and an elastic frame for supporting the main body, the main body top is provided with vibration mechanism, the top surface of the vibration mechanism is the vibration film, the elastic frame includes side wall, the side wall is provided as double-layer structure of upper layer and lower layer, the upper layer and the lower layer are connected by elastic member, and the upper layer is provided with shaft hole, the main body is provided with rotating shaft, the rotating shaft is inserted into the shaft hole to drive the main body to rotate.

[0012] Further, it further includes vibration source arranged outside the platform, so that the vibration source drives the platform to vibrate along the horizontal direction.

[0013] In addition, the present application also provides a kind of detection method of the anti-seismic detection microseismic detection device for detection, and the detection method is as follows, when detecting the anti-seismic performance of test body,

[0014] Install several second sensors on the test body, and the second sensors are electrically connected to the control system, and the test body is installed on the platform;

[0015] The accuracy of the platform vibration feedback is calibrated to ensure that the collected data feedback is accurate, and the vibration parameters are input into the control system, and the vibration data feedback by the first sensor on the platform is compared with the input vibration parameters, and the platform is calibrated after comparison;

[0016] The test body is subjected to vibration test, and the second sensor on the test body feedbacks the vibration data of the test body, which is compared with the input vibration parameters to analyze the anti-seismic performance of the test body.

[0017] Further, when analyzing the anti-seismic performance, the vibration parameters are changed, and any time period in the vibration time is intercepted for anti-seismic analysis.

[0018] Further, the support structure is provided with a third sensor electrically connected to the control system for sensing the change of the support position, and after the test body is replaced, the third sensor senses the change of the support position, and feedbacks to the control system, and the control system issues an instruction to adjust the support force of the support structure to restore the support position to the original balance position.

[0019] The anti-seismic detection micro-vibration detection device provided by the application has the following beneficial effects:

[0020] The anti-seismic detection micro-vibration detection device provided by the application has the following beneficial effects: BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a perspective view of the anti-seismic detection micro-vibration detection device;

[0022] Figure 2 It is an exploded view of the anti-seismic detection micro-vibration detection device (the control system is not shown);

[0023] Figure 3 It is a sectional view of the support structure;

[0024] Figure 4 It is a perspective view of another embodiment of the anti-seismic detection micro-vibration detection device.

[0025] Explanation of reference signs:

[0026] 10. Vibration source; 11. Main body; 12. Elastic frame; 121. Side wall; 20. Support structure; 21. Support column; 211. Chamber; 22. Cylinder; 221. Air pressure chamber; 222. Pressure gauge; 223. Telescopic guide column; 2231. Air hole; 23. Air film; 24. Connector; 241. Connecting block; 242. Connecting plate; 30. Platform; 40. Test body; 101. First sensor; 102. Second sensor. Detailed Implementation

[0027] The specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this application.

[0028] like Figure 1 As shown, this embodiment of the invention provides a micro-vibration detection device for seismic testing, including a vibration source 10, a support structure 20, a platform 30, and a control system. The vibration source 10 is commercially available and is commonly an electromagnetic vibrator. The vibration source 10 is placed on a horizontal plane. The support structure 20 is arranged around the vibration source 10. The platform 30 is located at the top of the vibration source 10 and the support structure 20 and is supported by the support structure 20. The bottom surface of the platform 30 is connected to the vibration source 10, and the top surface of the platform 30 is used to place the test object 40 to be tested for seismic resistance.

[0029] The vibration source 10 has a vibration diaphragm (not shown) at its top. The vibration diaphragm is connected to the bottom surface of the platform 30 to generate vibration, thereby applying vibration to the platform 30. The platform 30 then transmits the vibration to the test body 40 on the platform 30.

[0030] The support structure 20 maintains constant support for the platform 30 and the test object 40 placed on the platform 30, so that the platform 30 is as if it is suspended on the water surface. Its weight does not need to be supported by the vibration source 10. Thus, when the vibration source 10 vibrates, the platform 30 can be driven to vibrate slightly with a small driving force, realizing the vibration simulation experiment of a large weight object by the low-power output vibration source 10. For example, applying a force of 500 kg is enough to place a 10-ton weight on the platform 30 for a micro-vibration experiment.

[0031] The control system is used to collect data from the platform 30 and the test body 40 and to control the vibration of the vibration source 10. Specifically, the platform 30 is provided with a number of first sensors 101 and the test body 40 is provided with a number of second sensors 102. The first sensors 101 and the second sensors 102 are electrically connected to the control system so that the control system can receive vibration data fed back from the platform 30 and the test body 40, such as vibration amplitude, acceleration, frequency, etc.

[0032] The control system has a human-computer interaction interface such as a computer screen or a console, and the control system inputs simulated vibration parameters such as different levels of vibration corresponding to different frequencies, accelerations, displacements, etc. to the vibration source 10 to simulate the environment of a seismic level vibration to detect the anti-seismic capability of the test body 40.

[0033] When the anti-seismic test of the test body 40 is performed, the accuracy of the vibration feedback of the platform 30 is first calibrated to ensure that the collected data feedback is accurate, for example, the vibration parameters such as the acceleration 100 are input in the control system, the vibration source 10 performs the vibration corresponding to the acceleration value, considering the energy loss in the vibration transmission process, if the platform acceleration data feedback by the first sensor 101 on the platform 30 is 90, the isolation rate can be calculated, then the data of the platform is calibrated, the calibration method can be numerical compensation or structure adjustment, the compensation algorithm is not described here, so that the acceleration feedback by the platform 30 also reaches 100, so that the data feedback by the platform 30 can be ensured to be accurate.

[0034] After the vibration calibration of the platform 30, the vibration test of the test body 40 is performed, the second sensor 102 on the test body 40 feedbacks the acceleration of the test body 40, for example, the acceleration 100 is input in the control system, the acceleration feedback on the test body 40 is 10, which can be considered that the test body 40 absorbs 90% of the vibration energy, and the anti-seismic effect is better, that is, the isolation rate reaches 90%. It can be understood that the more vibration energy absorbed by the anti-seismic structure, the better the anti-seismic performance.

[0035] The control system of the microseismic detection device for anti-seismic detection adopted by the application can rapidly switch different vibration environments through the vibration data of the platform 30 and the test body 40 feedback to the control system, and the control system correspondingly issues control instructions to the vibration source 10, such as adjusting the vibration frequency, the vibration amplitude, and the vibration acceleration, so that different vibration environments can be switched in real time, and the vibration waveform in the corresponding vibration time period can be obtained through the vibration, such as a sine wave or a chaotic composite waveform. When the anti-seismic performance is analyzed, any time period in the vibration time can be intercepted for anti-seismic analysis, such as 10 minutes in the time domain. Compared with the traditional microseismic detection device, the data collection and the control of the vibration source are set as two execution systems, not as one control system for collection and control, the vibration environment cannot be quickly switched, and the analysis accuracy of the whole vibration is relatively low. The anti-seismic detection microseismic detection device provided by the application can greatly improve the accuracy of the anti-seismic performance analysis.

[0036] Further, the anti-seismic detection micro-vibration detection device can maintain the platform 30 and the test body 40 placed on the platform 30 to be constantly supported by the support structure 20, can realize that a low-power vibration source 10 can push a large-weight object to perform vibration test, does not need the vibration source 10 to support the weight of the heavy object, so that the detection device becomes an open-loop structure, that is, only a large enough site, enough support structure 20 and arrange the support structure 20, in theory, can realize the micro-vibration experiment on the unlimited area, compared with the traditional platform and vibration source integrated vibration test device, the vibration bearing weight is limited, can be regarded as the development on the closed-loop structure, compared with the test body with greater weight, the corresponding supporting force is greater, the structure is more complex, and the cost is greater. And, the support structure 20 supports the four corners of the platform 30, can meet the stable support of the platform 30, the size of the platform 30 is designed according to the test requirement, and the vibration test of the large-size heavy object is fully met. Secondly, the lifting guide structure can be arranged on the support structure 20 to cooperate with the platform 30, so that the platform 30 can be prevented from falling during vibration.

[0037] Understandably, before the test, the support structure 20 can be balanced and adjusted according to the weight of the platform 30 and the test body 40 placed on the platform 30, so that the support structure 20 can be constantly supported, for example, when the test body 40 with large weight is placed, the balance force of the support structure 20 is increased, and when the test body 40 with light weight is placed, the balance force in the support structure 20 can be reduced.

[0038] The present application provides a kind of above-mentioned micro-vibration detection principle, then further describes the anti-seismic detection micro-vibration detection device structure of the present application and provides a kind of support structure 20 for maintaining the balance of support gravity.

[0039] Please refer to Figure 2 The vibration source 10 includes a main body 11 and an elastic frame 12 for supporting the main body 11, the main body 11 is provided in a columnar shape, and a vibration mechanism is provided at the top end to emit vibration with a set frequency and intensity. The top surface of the vibration mechanism is a vibration film, which is connected to the bottom surface of the platform 30. Two opposite rotating shafts are also fixed on the outer periphery of the main body 11, so that the main body 11 can be rotatably installed on the elastic frame 12.

[0040] The elastic frame 12 comprises two opposite side walls 121 and a flat plate connected at the bottom of the two side walls 121, and the main body 11 is arranged between the two side walls 121. The side walls 121 are arranged in a double-layer structure, and the upper layer and the lower layer are connected by an elastic member. The upper layer is provided with an axle hole, and the rotating shaft of the main body 11 is inserted into the axle hole. When the main body 11 generates vibration, the reaction force is transmitted to the elastic member through the upper layer, and the elastic member absorbs the vibration to avoid the transmission of the vibration to other positions except the top end of the main body 11. The two ends of the flat plate are fixedly connected with the two side walls 121 respectively, so as to improve the stability of the support of the main body 11 by the side walls 121.

[0041] As shown in Figure 3 The support structure 20 is provided in a plurality of forms and arranged at the four corners of the periphery of the platform 30, so as to share the weight of the platform 30. The support structure 20 comprises a support column 21, a cylinder body 22, a gas film 23 and a connecting piece 24. The support column 21 is provided with a chamber 211, and the chamber 211 is communicated with a gas source (not shown in the figure). The gas source fills the gas into the chamber 211, so that the chamber 211 has gas with constant pressure. The cylinder body 22 is installed at the top end of the support column 21 and comprises a gas pressure cavity 221 with an open end upward. The gas pressure cavity 221 is communicated with the chamber 211 through a gas pipe, so that the gas in the chamber 211 enters the gas pressure cavity 221, and the gas pressure in the gas pressure cavity 221 is balanced by increasing or decreasing the gas pressure in the chamber 211. The gas film 23 is a flexible gas film and is fixed at the open end of the gas pressure cavity 221 to seal the gas pressure cavity 221. When the gas pressure in the gas pressure cavity 221 changes, the gas film 23 is pushed. Specifically, a wave ring is formed on the gas film 23, so that the middle part of the gas film 23 can be smoothly lifted and lowered. The connecting piece 24 is installed on the central area of the upper surface of the gas film 23 and is lifted and lowered with the gas film 23 when the gas film 23 is lifted and lowered.

[0042] The connecting piece 24 comprises a connecting block 241 and a connecting plate 242. The connecting block 241 is a frame with an open top end, and the bottom surface thereof is fixedly connected to the upper surface of the gas film 23 and located in the wave ring of the gas film 23. The connecting plate 242 is arranged at the top end of the connecting block 241 by fixed connection or ball joint connection. The platform 30 is supported on the connecting plate 242, which is equivalent to being supported by air floating. When the platform 30 is slightly shaken, the gas film 23 will follow the slight shaking. Since the amplitude of the shaking is very small, within 10 mm, the gas pressure in the gas pressure cavity 221 will not be affected, so the platform 30 and the test body 40 on the platform 30 can be stably and constantly supported. If the test body 40 is replaced by a test body with a larger weight, only the gas pressure in the gas pressure cavity 221 needs to be increased to increase the support pressure.

[0043] Furthermore, a third sensor (not shown) is installed on the connecting plate 242 to sense the position of the connecting plate 242. The third sensor is electrically connected to the control system. After the test body 40 is replaced, the gravity increases and the connecting plate 242 senses that the balance position has shifted downward. It then feeds back to the control system, which issues an inflation command, causing the air pressure chamber 221 to increase and the connecting plate 242 to return to the balance position.

[0044] Furthermore, the volume of the pressure chamber 221 is smaller than that of the chamber 211. This is beneficial because the pressure deviation caused by rapid changes in gas pressure within the chamber 211 can be compensated for by the pressure chamber 221 when balancing the pressure within the chamber 211, thus improving the accuracy of gas pressure regulation. A pressure gauge 222 is also installed on the cylinder 22 to display the gas pressure within the pressure chamber 221.

[0045] Furthermore, the pneumatic chamber 221 is equipped with a telescopic guide post 223 to support the air film 23 in a stable horizontal position for lifting and lowering. The telescopic guide post 223 includes a sleeve with its open end facing upward and a lifting rod inserted into the sleeve. The sleeve is fixed to the bottom end of the pneumatic chamber 221, the lower end of the lifting rod is inserted into the sleeve, and the top end extends upward to abut against the air film 23. The sleeve is provided with an air hole 2231, which connects the sleeve and the pneumatic chamber 221, allowing pressurized gas in the pneumatic chamber 221 to enter the sleeve and push the lifting rod upward to abut against the air film 23. At the same time, the gas pressure in the sleeve is balanced with the gas pressure in the pneumatic chamber 221. When the gas pressure in the pneumatic chamber 221 changes, the gas pressure in the sleeve changes synchronously. The lifting rod only provides a guiding function for the air film 23.

[0046] Furthermore, the present invention provides another implementation method for providing vibration force from a vibration source, such as... Figure 4 As shown, when simulating horizontal vibration, a vibration source 10 is further set on the outside of the platform 30, and the support structure 20 is supported at equal intervals below the platform 30. The vibration data of the vibration source 10 is set by the control system, and the vibration source 10 is controlled to drive the platform 30 to vibrate.

[0047] In this embodiment, the vibration source 10 can be set as one or more as needed, and the main body 11 of the vibration source 10 rotates relative to the elastic frame 12 so that the vibration mechanism of the main body 11 is connected to the platform 30 for transmission. The vibration mechanism is activated to push the side of the platform 30 and drive the platform 30 to vibrate.

[0048] Furthermore, the support structure 20 is fixed in front of the vibration mechanism of the main body 11. The bottom surface of the platform 30 can be slidably connected to the top of the support structure 20, or the platform 30 can be fixed to the top of the support structure 20. Then the connecting block 241 of the connector 24 is slidably connected to the connecting plate 242 so that when the vibration source 10 drives the platform 30 to vibrate, the platform 30 drives the connecting plate 242 to move against the connecting block 241.

[0049] After the installation is completed, the test body 40 is fixed on the platform 30, and the vibration data is input into the control system, the main body 11 of the vibration source 10 is controlled to generate vibration, the platform 30 is pushed to vibrate in the horizontal direction, the support structure 20 supports the platform 30 to be suspended, the friction during the vibration displacement is reduced, the first sensor 101 installed on the platform 30 detects the vibration data generated by the platform 30 under the action of the main body 11, and feeds back the vibration data to the control system, the vibration data of the first sensor 101 is compared with the input vibration data, the vibration data feedback of the platform 30 is ensured to be accurate, and the authenticity of the vibration environment simulation is improved. The second sensor 102 installed on the test body 40 detects the vibration data of the test body 40 and feeds back to the control system, the vibration data of the second sensor 102 is compared with the vibration data of the platform 30, and the horizontal direction anti-seismic capacity of the test body 40 can be obtained.

[0050] In summary, the micro-vibration detection device for anti-seismic detection of the present application can realize the simulation of vibration of a large-weight object driven by a small-power vibration source 10 by setting the support structure 20 to support the platform 30, offsetting the weight of the platform 30 and the test body 40, reducing the cost, and realizing the anti-seismic detection of a large-weight object. In addition, the vibration source 10 and the support structure 20 can be installed in different ways to realize multi-angle simulation vibration experiments, greatly improving the applicability of the vibration platform.

[0051] The above-described embodiments only express the implementation of the present application, but cannot be understood as the limitation of the patent scope of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A microseismic detection device for seismic testing, characterized in that, include: The vibration source (10), the support structure (20), the platform (30) and the control system are arranged around the vibration source (10). The platform (30) is supported on the support structure (20) in a lifting manner and is supported by the constant support force of the support structure (20). The top of the vibration source (10) has a vibration membrane, which is connected to the bottom surface of the platform (30) to drive the platform (30) to vibrate. The top surface of the platform (30) is used to place the test body (40) that needs to be tested for seismic resistance. The platform (30) is provided with several first sensors (101). The first sensors (101) are electrically connected to the control system so that the control system can receive the vibration data fed back by the platform (30). The support structure (20) includes a support column (21), a cylinder (22), an air film (23), and a connector (24). The support column (21) has a chamber (211) for communication between the air source and the chamber (211). The cylinder (22) is installed at the top of the support column (21) and includes an air pressure chamber (221) with the opening end facing upward. The air pressure chamber (221) is connected to the chamber (211). The air film (23) is fixed at the opening end of the air pressure chamber (221). The connector (24) is installed in the central area of ​​the upper surface of the air film (23). The pressure change in the chamber (211) causes the air film (23) to vibrate and is transmitted to the connector (24). The air pressure chamber (221) is equipped with a telescopic guide post (223). The telescopic guide post (223) includes a sleeve with the open end facing upward and a lifting rod inserted into the sleeve. The sleeve is fixed at the bottom end of the air pressure chamber (221). The lower end of the lifting rod is inserted into the sleeve, and the top end extends upward to abut against the air film (23). An air hole (2231) is provided on the sleeve, and the air hole (2231) connects the sleeve and the air pressure chamber (221).

2. The microseismic detection device for seismic testing according to claim 1, characterized in that, The air membrane (23) is a flexible air membrane, and a wave ring is formed on the air membrane (23). The connector (24) is fixed at the center of the wave ring. The connector (24) includes a connecting block (241) and a connecting plate (242). The bottom surface of the connecting block (241) is fixedly connected to the upper surface of the air membrane (23) and located inside the wave ring of the air membrane (23). The connecting plate (242) is set at the top of the connecting block (241) so that the platform (30) can be supported and fixed on the connecting plate (242).

3. The microseismic detection device for seismic testing according to claim 2, characterized in that, A third sensor is installed on the connecting plate (242) to sense the position of the connecting plate (242), and the third sensor is electrically connected to the control system.

4. The microseismic detection device for seismic testing according to claim 1, characterized in that, The vibration source (10) includes a main body (11) and an elastic frame (12) for supporting the main body (11). The top of the main body (11) is provided with a vibration mechanism, the top surface of which is a vibration membrane. The elastic frame (12) includes a side wall (121), which is a double-layer structure with upper and lower layers. The upper and lower layers are connected by an elastic element, and the upper layer has a shaft hole. The main body (11) is provided with a rotating shaft, which is inserted into the shaft hole to drive the main body (11) to rotate.

5. The microseismic detection device for seismic testing according to claim 1, characterized in that, It also includes a vibration source (10) located on the outside of the platform (30) so that the vibration source (10) can drive the platform (30) to vibrate in the horizontal direction.

6. A detection method for a microseismic detection device for seismic testing according to any one of claims 1-5, characterized in that, When testing the seismic performance of the test body (40), Several second sensors (102) are installed on the test body (40), and the second sensors (102) are electrically connected to the control system. The test body (40) is then installed on the platform (30). The accuracy of the vibration feedback of the platform (30) is calibrated to ensure that the collected data feedback is accurate. The vibration parameters are input into the control system. The vibration data fed back by the first sensor (101) on the platform (30) is compared with the input vibration parameters. After comparison, the vibration of the platform (30) is calibrated. Vibration test is performed on the test body (40). The second sensor (102) on the test body (40) feeds back the vibration data of the test body (40), compares it with the input vibration parameters, and analyzes the seismic performance of the test body (40).

7. A detection method for a microseismic detection device for seismic testing according to claim 6, characterized in that, When performing seismic performance analysis, the vibration parameters are changed, and any time period of the vibration time is selected for seismic analysis.

8. A detection method for a microseismic detection device for seismic testing according to claim 6, characterized in that, A third sensor is provided on the support structure (20) and electrically connected to the control system. It is used to sense changes in the support position. After the test body (40) is replaced, the third sensor senses that the support position has changed and feeds back to the control system. The control system issues a command to adjust the support force of the support structure (20) so that the support position returns to the original equilibrium position.

Images