Rock acoustic emission experiment sensor module convenient to install and comprehensive in data acquisition
By designing a rock acoustic emission experimental sensor module that is easy to install, including the upper fixture, the lower fixture and the sensor integration module, the problems of unsolid pasting of sensors, rock explosion damage and data acquisition in traditional experiments are solved, and a more stable and comprehensive data acquisition effect is achieved.
Patent Information
- Application Number
- CN202411897420.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-23
- Publication Date
- 2025-03-28
AI Technical Summary
In traditional rock acoustic emission experiments, the sensor and rock sample are not sticking firmly, which can easily lead to experiment failure; the accumulation of rock sample stress leads to rock explosion, and the sensor is easily ejected and damaged; traditional sensors cannot collect acoustic emission signals at the top and bottom of the rock sample at the same time, and the experiment is limited; the experimental wires are messy and complex, which increases the equipment failure rate.
A rock acoustic emission experimental sensor module is designed for easy installation and comprehensive data acquisition, including upper fixtures, lower fixtures and sensor integration modules. The upper and lower fixtures have built-in sensors, and the rock loading device is threaded. The sensor integration module can integrate eight sensors, connecting the sensor to the rock sample through a spring, simplifying the installation process; the transparent resin hollow cylinder of the sensor integration module plays a protective role in the event of rock explosion.
It solves the problem of unsolid sticking between the sensor and the rock sample, eliminates the phenomenon of sensor damage caused by rock bursts, realizes convenient collection of acoustic emission data at both ends of the rock sample, simplifies the connection of experimental wires, and reduces the equipment failure rate.
Smart Images
Figure CN119715807A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of rock acoustic emission experiments, in particular to a sensor module which is required for rock indoor acoustic emission experiments and has comprehensive data collection and is easy to install. Background Art
[0002] Acoustic emission technology can monitor the generation and expansion of microcracks in rocks during stress in real time. By capturing and analyzing the acoustic emission signals inside the rock, changes in the mechanical behavior of the rock, such as elastic deformation, damage and failure processes, can be reflected in a timely manner. This real-time monitoring enables researchers to obtain more detailed rock fracture mechanisms. By analyzing the source, frequency, energy and duration of the acoustic emission signal, the mechanical properties of the rock, such as stress-strain state, crack development, plastic deformation and fracture, can be inferred. The characteristics of the AE signal are closely related to the fracture mode, strength and toughness of the rock, and can provide valuable parameters for rock mechanics experiments. Therefore, acoustic emission experiments play an important role in the study of the mechanical properties of rocks.
[0003] The traditional acoustic emission experimental sensor is a single sensor. During the experiment, glue is used to stick the sensor to the rock sample. After the glue and the rock sample are firmly bonded, the rock sample with the sensor can be placed on the rock loading device for experiment. In this process, some rocks have high water content or low strength due to their special properties, which makes it easy to produce powder, making it difficult for the sensor to stick to the rock sample. Or, during the loading process of the rock sample, rock bursts are easily generated due to the sudden release of stress. For example, rock bursts are easy to pop out of the rock loading device when the sensor is pasted, causing the sensor to be damaged. In addition, since the top and bottom of the rock sample need to bear the loading of the rock loading device, the traditional single sensor cannot be pasted on the top and bottom of the rock sample, resulting in some experiments that need to collect acoustic emission signals from the top and bottom of the rock sample. In addition, each traditional single sensor requires a data line to connect to the signal processing system, which makes the experimental wires messy and complicated and increases the failure rate of the experimental equipment. To this end, we propose a rock acoustic emission experimental sensor module with comprehensive data acquisition and easy installation. Summary of the invention
[0004] The object of the present invention is to provide a rock acoustic emission experiment sensor module which is easy to install and has comprehensive data collection, so as to solve the problems raised in the above-mentioned background technology.
[0005] To achieve the above object, the present invention provides the following technical solution: a rock acoustic emission experiment sensor module which is easy to install and has comprehensive data collection, comprising:
[0006] The upper fixture is connected to the upper end of the rock loading device through threads. The upper fixture is used to connect the rock loading device and load the rock sample during the experiment. The built-in sensor can be used to receive the acoustic emission signal from the upper end of the rock sample.
[0007] The lower fixture is connected to the lower end of the rock loading device through a thread. The lower fixture is used to connect the rock loading device and load the rock sample during the experiment. The built-in sensor can be used to receive the acoustic emission signal at the lower end of the rock sample.
[0008] Sensor integration module, which can integrate up to eight sensor units, is used to receive the acoustic emission signals emitted by rock samples during experiments.
[0009] Preferably, the upper fixture is made of metal material, and the upper end can be connected to the loading device through threads. The upper fixture has an acoustic emission sensor built in, and a data line interface connected to the signal processing system is reserved on the side.
[0010] Preferably, the lower clamp is made of metal material, and the lower end can be connected to the loading device through a thread. The lower clamp has a built-in acoustic emission sensor. A groove (data transmission interface) for fixing the sensor integrated module is reserved on the upper part of the lower clamp, and the groove (data transmission interface) also has the function of data transmission. A data line interface connected to the signal processing system is reserved on the side.
[0011] Preferably, the sensor integration module presents a hollow cylinder, which is made of a transparent resin material. Eight single sensors can be integrated inside the hollow cylinder. All single sensors are connected to the hollow cylinder using springs. The data line of the single sensor is built into the spring and connected to the lower fixture groove (data transmission interface) through a circle of metal protrusions (data transmission interface) under the hollow cylinder, and connected to the signal processing system through the data line interface reserved on the side of the lower fixture, so that one data line can transmit the signals of all sensors except the upper fixture sensor signal. Each single sensor integrated in the sensor integration module can be disassembled and replaced.
[0012] The present invention has at least the following beneficial effects:
[0013] The present invention integrates the sensor into the upper and lower clamps and the sensor integrated module, and uses springs instead of traditional glue to fix the sensor on the rock sample, thereby eliminating the tedious steps of pasting individual sensors one by one and eliminating the problem of experimental failure due to the loose pasting of the sensor and the rock sample; the present invention connects the sensor with the hollow cylinder of the sensor integrated module through a spring, thereby eliminating the phenomenon that the individual sensor is ejected when a rock burst occurs due to stress accumulation of the rock sample during the experiment, thereby causing damage to the sensor, and the transparent resin hollow cylinder of the sensor integrated module can also play a protective role when a rock burst occurs, and the transparent material makes it more convenient for experimenters to observe the deformation of the rock sample in real time; the present invention has a sensor built in each of the upper and lower clamps, so that relevant experiments that need to collect acoustic emission data at the upper and lower ends of the rock sample can be carried out conveniently; the present invention improves the traditional method that each sensor needs a data line to be connected to the signal processing system by integrating the data line inside the upper and lower clamps and the sensor integrated module, and only needs to connect the data line to the signal processing system from the data line interface reserved on the side of the upper and lower clamps. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 Schematic diagram of the overall structure of the present invention
[0015] Figure 2 Schematic diagram of the upper fixture structure
[0016] Figure 3 Schematic diagram of the lower fixture structure
[0017] Figure 4 Schematic diagram of the sensor integrated module structure
[0018] In the figure: 1. upper fixture; 2. data line interface of upper fixture; 3. built-in sensor of upper fixture; 4. rock sample; 5. hollow cylinder of sensor integrated module; 6. connecting spring; 7. sensor; 8. built-in sensor of lower fixture; 9. positioning and data transmission interface of sensor integrated module; 10. data line interface of lower fixture; 11. lower fixture. DETAILED DESCRIPTION
[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.
[0020] It is obvious that the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0021] See also Figure 1-4 , the present invention provides several technical solutions:
[0022] In the first embodiment, the upper clamp (1) and the lower clamp (2) are first connected to the rock loading device, and then the rock sample (4) is placed in the center of the upper clamp (1) and the lower clamp (2). Then, the number of sensors (7) required for the experiment is connected to the hollow cylinder (5) of the sensor integrated module. After that, the hollow cylinder (5) of the sensor integrated module connected with the sensor (7) is inserted into the rock sample (4) from top to bottom, and the connecting spring (6) between the sensor (7) and the hollow cylinder (5) of the sensor integrated module can automatically adjust the sensor ( 7) and the rock sample (4) so that the sensor (7) is in close contact with the rock sample (4) without exerting a large force on the rock sample, and the sensor integrated module positioning and data transmission interface (9) below the hollow cylinder (5) of the sensor integrated module are connected to the sensor integrated module positioning and data transmission interface (9) reserved on the lower fixture (2), and then the upper fixture data line interface (2) and the lower fixture data line interface (10) are respectively inserted into the data line, and then the data line is connected to the signal processing system to start the rock acoustic emission experiment.
[0023] In the second embodiment, the upper clamp (1) and the lower clamp (2) are first connected to the rock loading device, and then the rock sample (4) is placed in the center of the upper clamp (1) and the lower clamp (2), and then the number of sensors (7) required for the experiment is connected to the hollow cylinder (5) of the sensor integrated module, and then the hollow cylinder (5) of the sensor integrated module connected with the sensor (7) is inserted into the rock sample (4) from top to bottom, and the connecting spring (6) between the sensor (7) and the hollow cylinder (5) of the sensor integrated module can automatically adjust the distance between the sensor (7) and the rock sample (4) so that the sensor (7) The rock sample (4) is closely attached without exerting a large force on the rock sample, and the sensor integrated module positioning and data transmission interface (9) below the hollow cylinder (5) of the sensor integrated module is connected to the sensor integrated module positioning and data transmission interface (9) reserved on the lower fixture (2). If the rock mass acoustic emission experiment does not need to collect acoustic emission data at the upper and lower ends of the rock sample, then the experiment does not need to connect the data line at the upper fixture data line interface (2). It only needs to insert the data line at the lower fixture data line interface (10) and connect the data line to the signal processing system to start the rock mass acoustic emission experiment.
[0024] In the third embodiment, when conducting a rock acoustic emission experiment, since the hollow cylinder (5) of the sensor integrated module is made of transparent resin, the experimenter can observe the real-time deformation of the rock sample (4) through the hollow cylinder (5) of the sensor integrated module at any time. If a rock burst occurs, the hollow cylinder (5) of the sensor integrated module can act as a protective cover to prevent rock fragments from flying out and causing a safety accident. In addition, since the sensor (7) is connected to the hollow cylinder (5) of the sensor integrated module by a connecting spring (6), the phenomenon of the sensor (7) being damaged by the rock burst and flying out is prevented.
[0025] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.
[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A rock acoustic emission experiment sensor module that is easy to install and has comprehensive data collection, characterized by: include: An upper clamp (1), wherein the upper clamp (1) is connected to the upper end of the rock loading device when in use, and the upper clamp (1) is used to collect the acoustic emission signal from the upper end of the rock and load the rock sample, and also has the function of outputting the acoustic emission signal; A lower clamp (11), which is connected to the lower end of the rock loading device when in use, and is used to collect the acoustic emission signal at the lower end of the rock and load the rock sample, and also has the function of outputting the acoustic emission signal; A sensor integrated module hollow cylinder (5), the sensor integrated module hollow cylinder (5) is made of a transparent resin material, and together with the sensor (7), the connection spring (6), the sensor integrated module positioning and data transmission interface (9) form a sensor integrated module, which is used to fix the sensor (7) and also has an experimental protection function; 2. A rock acoustic emission experiment sensor module that is easy to install and has comprehensive data collection according to claim 1, characterized in that: An upper fixture built-in sensor (3) is built inside the upper fixture (1), and a lower fixture built-in sensor (8) is built inside the lower fixture (11). The upper fixture built-in sensor (3) and the lower fixture built-in sensor (8) can respectively receive acoustic emission signals from the top and bottom of the rock sample, and when it is not necessary to collect acoustic emission signals from the top and bottom of the rock sample in a certain experiment, the upper fixture built-in sensor (3) and the lower fixture built-in sensor (8) can be disabled, that is, the upper fixture data line interface (2) can be disconnected from the data line.
3. A rock acoustic emission experiment sensor module that is easy to install and has comprehensive data collection according to claim 1, characterized in that: The sensor integrated module, which is composed of the hollow cylinder (5) of the sensor integrated module, the sensor (7), the connecting spring (6), the sensor integrated module positioning, and the data transmission interface (9), can conveniently and directly insert the rock sample therein, and the connecting spring (6) can automatically adjust the distance between the sensor (7) and the rock sample (4) so that the sensor (7) is closely attached to the rock sample without generating a large force on the rock sample.
4. A rock acoustic emission experiment sensor module that is easy to install and has comprehensive data collection according to claim 3, characterized in that: The sensor integrated module is composed of the sensor integrated module hollow cylinder (5), the sensor (7), the connecting spring (6), the sensor integrated module positioning, and the data transmission interface (9). The number of sensors (7) integrated in the sensor integrated module can be increased or decreased according to specific experiments, that is, the sensor (7), the connecting spring (6) and the sensor integrated module hollow cylinder (5) can be disassembled. The sensor integrated module can integrate up to eight sensors (7), which can meet the needs of most rock acoustic emission experiments.
5. A rock acoustic emission experiment sensor module that is easy to install and has comprehensive data collection according to claims 1 and 3, characterized in that: The data line of the sensor (7) is built into the connecting spring (6) and connected to the sensor integrated module through the sensor integrated module hollow cylinder (5) and the data transmission interface (9), and then connected to the lower clamp data line interface (10) through the data line built into the lower clamp (11), thereby simplifying the number of wiring harnesses.
6. A rock acoustic emission experiment sensor module that is easy to install and has comprehensive data collection according to claims 1 and 3, characterized in that: An upper fixture data line interface (2) is reserved on the side of the upper fixture (1), and a lower fixture data line interface (10) is reserved on the side of the lower fixture (11). When conducting an experiment, only two data lines need to be used to respectively connect the upper fixture data line interface (2) and the lower fixture data line interface (10) to realize the export of the acoustic emission signal.
7. A rock acoustic emission experiment sensor module that is easy to install and has comprehensive data collection according to claims 2 and 5, characterized in that: The upper fixture built-in sensor (3) can be selected in the signal processing system whether to be used in this experiment. If the upper fixture built-in sensor (3) does not need to be activated in this experiment, the upper fixture data line interface (2) does not need to be connected to the data line.