Detector self-inspection experimental device

Abstract

The utility model discloses an experimental device for detector self-inspection, which consists of a seismic wave source simulation part, a stratum simulation part and a wave source detection part, and is characterized in that the seismic wave source simulation part comprises a fixed frame and a small hammer; the stratum simulation part comprises a square steel plate, a cylindrical container and sand; the wave source detection part comprises a detector, a wire and an oscilloscope; based on the principle of seismic exploration, a seismic wave source is simulated through a small hammer; the square steel plate and the sand simulate the stratum, the detector receives seismic signals, and the oscilloscope displays the seismic signals to complete the self-inspection work of the detector. The detector is simple and safe to operate, and can detect whether the detector can work normally or not more conveniently; the length of the fixing frame, the density of a small hammer and the particle size of sand can be changed, multiple experiments are completed, and detection errors are reduced.

Description

Technical Field

[0001] The utility model relates to the experimental field of seismic exploration, in particular to an experimental device for self-testing a geophone. Background Art

[0002] A geophone is a device used to detect fluctuations in acoustic signals. It can identify the presence or changes in acoustic signals and extract information about the geological structure or changes in rock formations. In seismic exploration, geophones are used to conduct geological research and exploration in a variety of geological areas, including sedimentary and metamorphic rocks. By accurately capturing ground vibrations caused by seismic waves and converting them into electrical signals, they provide critical data and information for a deeper understanding of underground geological structure, energy resource distribution, and geological disaster warnings.

[0003] In practice, geophones should be tested before use. They can only be put into operation if they can properly receive seismic signals and transmit them to the oscilloscope. However, due to the complex environment and many other uncontrollable factors that affect geophones in actual seismic exploration, accurate geophone testing is difficult. Therefore, a geophone self-test experimental device is needed to facilitate geophone testing. Utility Model Content

[0004] The purpose of the utility model is to more conveniently detect whether the detector can work normally and improve the working efficiency of geologists in seismic surveying, and to propose a detector self-test experimental device.

[0005] The present invention provides a geophone self-test experimental device, comprising a seismic wave source simulation unit, a formation simulation unit, and a wave source detection unit. The seismic wave source generation unit includes a fixture and a small hammer; the formation simulation unit includes a square steel plate, a cylindrical container, and sand; and the wave source detection unit includes a geophone, a conductor, and an oscilloscope.

[0006] Insert the fixing frame into the left groove of the square steel plate and connect the fixing frame and the small hammer; place the cylindrical container in the right groove of the square steel plate and fill the cylindrical container with sand; insert the detector into the sand and connect the detector and the oscilloscope with a wire.

[0007] Preferably, the length of the fixing frame includes 10 cm and 20 cm, which is used to control the falling height of the hammer.

[0008] Preferably, the hammer is made of iron and steel and is used to generate seismic signals.

[0009] Preferably, the sand particle size ranges include 0.002mm-0.02mm and 0.02mm-0.2mm, which are used to simulate the formation.

[0010] The beneficial effects of the present invention are:

[0011] (1) This design has a novel structure, is easy to use, has a low device cost, and is easy to promote; the detector self-test process can be observed intuitively, and the detection work can be completed more accurately.

[0012] (2) When the utility model is implemented, the influence of the external environment can be reduced, and whether the detector can work normally can be detected more conveniently and accurately. During the experiment, multiple experiments are completed by adjusting the length of the fixed frame, the material of the small hammer and the particle size of the sand to reduce the experimental error.

[0013] (3) Experimental method of the device of the present invention: Based on the principle of seismic exploration, a small hammer is used to simulate the seismic wave source; a square steel plate and sand are used to simulate the stratum; a detector receives the seismic signal and an oscilloscope displays the acoustic wave signal to complete the self-test of the detector. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front view of the utility model.

[0015] Reference numerals: 1-square steel plate; 2-fixing frame; 3-small hammer; 4-cylindrical beaker; 5-sand; 6-detector; 7-conductor; 8-oscilloscope. DETAILED DESCRIPTION

[0016] The following examples of the present invention are further described with reference to the front view, but are not intended to limit the present invention.

[0017] Before describing the specific implementation cases of the present invention, in order to make the solution of the present invention clearer and more complete, the devices appearing in the present invention are first described.

[0018] Square steel plate: A square steel plate used to conduct seismic signals and fix equipment.

[0019] Fixing bracket: Fixing device with length of 10cm and 20cm, used to control the falling height of the hammer.

[0020] Hammer: A hammer made of iron or steel, used to generate seismic signals.

[0021] Cylindrical container: A bottomless device made of acrylic material with clear scales on the outer wall for observing the insertion depth of the detector.

[0022] Sand: Sand with a particle size range of 0.002mm-0.02mm and 0.02mm-0.2mm is used to simulate the formation.

[0023] Detector: The model is a moving coil detector, used to receive seismic signals.

[0024] Oscilloscope: Model DS70000 digital oscilloscope, used to receive the data output by the detector and generate a waveform graph.

[0025] like Figure 1 As shown, this utility model provides a geophone self-test experimental device, which consists of a seismic wave source simulation part, a formation simulation part, and a wave source detection part. The seismic wave source simulation part includes a fixed frame and a small hammer; the formation simulation part includes a square steel plate, a cylindrical container, and sand; and the wave source detection part includes a geophone, a wire, and an oscilloscope.

[0026] Insert the fixing frame into the left groove of the square steel plate and connect the fixing frame and the small hammer; place the cylindrical container in the right groove of the square steel plate and fill the cylindrical container with sand; insert the detector into the sand and connect the detector and the oscilloscope with a wire.

[0027] Steps:

[0028] (1) Insert the fixing bracket into the left groove of the square steel plate and connect the fixing bracket and the small hammer.

[0029] (2) Place the cylindrical container in the right groove of the square steel plate and fill it with sand with a particle size of 0.002mm-0.02mm to the top scale of the cylindrical container.

[0030] (3) Insert the detector to the lowest scale of the cylindrical container and connect the detector and oscilloscope through a wire.

[0031] (4) Turn on the oscilloscope and ensure that it is working properly.

[0032] (5) After pressing the tail end of the hammer to the square steel plate, release the tail end of the hammer to generate a seismic signal.

[0033] (6) Record the waveform amplitude changes on the oscilloscope.

[0034] (7) Second group: Replace the 10 cm fixing frame with a 20 cm length fixing frame and repeat the steps (4) to (6).

[0035] (8) The third group: Replace the iron hammer with a steel hammer and repeat the steps (4) to (6).

[0036] (9) The fourth group: replace the sand with a particle size of 0.002mm-0.02mm with sand with a particle size of 0.02mm-0.2mm, and repeat the operations (4)-(6).

[0037] The experimental method of the device of the utility model is as follows: based on the principle of seismic exploration, a small hammer is used to simulate a seismic wave source; a square steel plate and sand are used to simulate a stratum; a geophone receives seismic signals; an oscilloscope displays the seismic signals to complete the self-test of the geophone.

[0038] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An experimental device for geophone self-test, characterized by comprising a seismic wave source simulation part, a formation simulation part and a wave source detection part, wherein the seismic wave source simulation part comprises a fixing frame (2) and a small hammer (3); the formation simulation part comprises a square steel plate (1), a cylindrical container (4) and sand (5); the wave source detection part comprises a geophone (6), a wire (7) and an oscilloscope (8); The fixing frame (2) is inserted into the left groove of the square steel plate (1), and the fixing frame (2) and the small hammer (3) are connected; the cylindrical container (4) is placed in the right groove of the square steel plate (1), and the sand (5) is filled in the cylindrical container (4); the detector (6) is inserted into the sand (5), and the conductor (7) is used to connect the detector (6) and the oscilloscope (8).

2. The experimental device for detector self-test according to claim 1, characterized in that: The length of the fixing frame is 10 cm or 20 cm, and is used to control the falling height of the small hammer.

3. The experimental device for detector self-test according to claim 1, characterized in that: The small hammer is made of iron or steel and is used to generate seismic signals.

4. The experimental device for geophone self-test according to claim 1, characterized in that: The sand particle size is 0.002mm-0.02mm or 0.02mm-0.2mm, and is used to simulate strata.

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