Transient electromagnetic pulse source

Abstract

The transient electromagnetic pulse source is applied to an unmanned aerial vehicle, the unmanned aerial vehicle carries a direct-current power supply and a transmitting coil, and the transient electromagnetic pulse source comprises a shell which is provided with a first installation area and a second installation area in the length direction of the shell; the main circuit board is connected with the direct-current power supply and is fixedly arranged in the shell; the pulse transmitting assembly is arranged in the first mounting area, is connected with the direct-current power supply and forms a power supply loop with the transmitting coil; the capacitor assembly is arranged in the first mounting area and is connected with the pulse transmitting assembly; the controller is arranged in the second mounting area and is used for setting a transmitting instruction and an output current; and the DC / DC converter is arranged in the second mounting area and is connected with the controller and the pulse transmitting assembly through the main circuit board. According to the transient electromagnetic pulse source provided by the invention, each component is layered and uniformly arranged, and the overall size and weight of the transient electromagnetic pulse source are reduced by reasonably utilizing the space, so that the transient electromagnetic pulse source can be suitable for application scenes such as full-aviation transient electromagnetic detection and shallow layer detection.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of transient electromagnetic detection, in particular to a transient electromagnetic pulse source. BACKGROUND

[0002] Transient electromagnetic detection is a geophysical exploration technology based on electromagnetic induction principle, which uses a transient electromagnetic pulse source to pass transient current to electromagnetic transmitting devices such as transmitting coils, grounding electrodes and transmitting cables, so that the electromagnetic transmitting devices can emit transient electromagnetic field to the detection medium, and analyze the characteristics of the medium according to the response of the medium to the transient electromagnetic field.

[0003] The depth of transient electromagnetic detection increases with the increase of primary field strength. In order to be suitable for various detection scenes, the existing transient electromagnetic pulse source can usually generate large current, resulting in high weight and cost, which is difficult for unmanned aerial vehicles to carry. Therefore, the existing transient electromagnetic pulse source is difficult to be applied to full-airborne transient electromagnetic detection. In addition, there is a problem of high cost in shallow detection. SUMMARY

[0004] The present application is proposed based on the above needs of the prior art, and the technical problem to be solved by the present application is to provide a transient electromagnetic pulse source, in which the components of the transient electromagnetic pulse source are layered and uniformly arranged to reduce the size and weight of the transient electromagnetic pulse source and expand the applicable detection scenes.

[0005] In order to solve the above problems, the present application provides the following technical solutions.

[0006] The present application provides a transient electromagnetic pulse source applied to an unmanned aerial vehicle, wherein the unmanned aerial vehicle carries a direct current power supply and a transmitting coil, and the transient electromagnetic pulse source comprises: a shell, which is formed with a first mounting area and a second mounting area along the length direction thereof; a main circuit board, which is fixedly arranged in the shell and connected with the direct current power supply; a pulse transmitting assembly, which is arranged in the first mounting area, connected with the direct current power supply, and forms a power supply loop with the transmitting coil; a capacitor assembly, which is arranged in the first mounting area and connected with the pulse transmitting assembly, so as to reduce the fluctuation degree of output voltage through energy storage buffering; a controller, which is arranged in the second mounting area and used for setting transmitting instructions and output current; and a DC / DC converter, which is arranged in the second mounting area, connected with the controller and the pulse transmitting assembly through the main circuit board, so as to receive the output current and the transmitting instructions set by the controller and control the pulse transmitting assembly to apply the output current to the power supply loop.

[0007] Further, the pulse transmitting assembly is located between the main circuit board and the capacitor assembly; and the DC / DC converter is located between the main circuit board and the controller.

[0008] Further, the transient electromagnetic pulse source has a weight of no more than 4 kg.

[0009] Further, the transient electromagnetic pulse source has an output current ranging from 0 to 120 A.

[0010] Further, the transient electromagnetic pulse source has a turn-off time of no more than 1 μs.

[0011] Further, the transient electromagnetic pulse source further comprises an operation panel fixedly arranged on the surface of the shell and connected with the controller, and the controller sets the emission instruction and the output current through the operation panel.

[0012] Further, the transient electromagnetic pulse source further comprises a heat dissipation assembly arranged in the first mounting area.

[0013] Further, the heat dissipation assembly comprises a heat dissipation fin.

[0014] Further, the heat dissipation assembly comprises a fan.

[0015] Further, the transient electromagnetic pulse source further comprises a heat insulation assembly arranged between the first mounting area and the second mounting area to limit the heat conduction from the first mounting area to the second mounting area.

[0016] The beneficial effects of the present application include:

[0017] (1) The components of the transient electromagnetic pulse source are layered and uniformly arranged, and the overall size and weight of the transient electromagnetic pulse source are reduced by reasonably utilizing the space.

[0018] (2) The transient electromagnetic pulse source has a weight of no more than 4 kg, an output current ranging from 0 to 120 A, and a turn-off time of no more than 1 μs, and thus can be applied to full-airborne transient electromagnetic detection, shallow detection and other application scenarios.

[0019] (3) The heat dissipation assembly arranged in the first mounting area is conducive to rapid and effective heat dissipation, and improves the reliability of the transient electromagnetic pulse source.

[0020] (4) The heat insulation assembly arranged between the first mounting area and the second mounting area can effectively limit the heat conduction from the first mounting area to the second mounting area, and is conducive to the rapid conduction of heat from the first mounting area to the outside of the shell, further improving the reliability of the transient electromagnetic pulse source. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the specific embodiments of the present specification, the drawings required to be used in the specific embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some specific embodiments described in the present specification, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0022] Figure 1 is a schematic diagram of the front side appearance structure of the transient electromagnetic pulse source in the specific embodiments of the present specification.

[0023] Figure 2 is a schematic diagram of the rear side appearance structure of the transient electromagnetic pulse source in the specific embodiments of the present specification.

[0024] Figure 3 is a schematic diagram of the first mounting area and the second mounting area in the specific embodiments of the present specification.

[0025] Figure 4 is an isometric schematic diagram of each component of the transient electromagnetic pulse source in the specific embodiments of the present specification.

[0026] Figure 5 is a schematic diagram of each component of the transient electromagnetic pulse source in other angles in the specific embodiments of the present specification.

[0027] Figure 6 is a schematic diagram of the heat dissipation component structure in the specific embodiments of the present specification.

[0028] Reference signs:

[0029] 100, housing; 110, first mounting area; 120, second mounting area;

[0030] 200, main circuit board;

[0031] 300, pulse emission component;

[0032] 400, capacitor component;

[0033] 500, controller;

[0034] 600, DC / DC converter;

[0035] 700, operation panel;

[0036] 800, heat dissipation component; 810, heat dissipation fin; 820, fan;

[0037] 900, heat insulation component. Specific embodiments

[0038] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings. Obviously, the embodiments described in the present application are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0039] The present application provides a transient electromagnetic pulse source applied to a UAV, the UAV carrying a DC power supply and a transmitting coil, the transient electromagnetic pulse source comprising a shell 100, a main circuit board 200, a capacitor assembly 400, a pulse transmitting assembly 300, a controller 500 and a DC / DC converter 600.

[0040] The shell 100 is made of aluminum alloy, and its appearance is shown in Figure 1 and Figure 2 The shell 100 has a hollow structure, and other components of the transient electromagnetic pulse source are arranged inside or on the surface of the shell 100. The shell 100 is formed with a first mounting area 110 and a second mounting area 120 along its length direction, as shown in Figure 3 and

[0041] The main circuit board 200 is fixedly arranged in the shell 100, and the main circuit board 200 is in a long sheet shape and fixedly connected to the bottom surface of the shell 100. The main circuit board 200 is connected to the DC power supply carried by the UAV, and the main circuit board 200 is also connected to other components of the transient electromagnetic pulse source to supply power to other components of the transient electromagnetic pulse source and realize data transmission between the components.

[0042] The pulse transmitting assembly 300 is arranged in the first mounting area 110 of the shell 100, and the pulse transmitting assembly 300 is connected to the DC power supply and forms a power supply loop with the transmitting coil. When the pulse transmitting assembly 300 applies an output current to the power supply loop, the pulse transmitting assembly 300 can control the regularity and waveform of the output current. The structure of the pulse transmitting assembly 300 is shown in Figure 4 and Figure 5 The pulse transmitting assembly 300 comprises a rectangular sheet-shaped PCB circuit board, and the PCB circuit board of the pulse transmitting assembly 300 is located between the main circuit board 200 and the capacitor assembly 400 and is fixedly connected to the main circuit board 200 through a columnar connecting piece.

[0043] The capacitor assembly 400 is arranged in the first mounting area 110 of the shell 100, and the capacitor assembly 400 is connected to the pulse transmitting assembly 300 to reduce the fluctuation degree of the output voltage through energy storage and buffering. The structure of the capacitor assembly 400 is shown in Figure 4 and Figure 5As shown, the capacitor assembly 400 includes a rectangular sheet-shaped PCB circuit board, which is fixedly mounted above the main circuit board 200 via columnar connectors. The capacitor assembly 400 also includes four cylindrical energy storage capacitors, which are fixedly mounted above the PCB circuit board.

[0044] The controller 500 is located in the second mounting area 120 and is used to set the transmission command and output current. The structure of the controller 500 is as follows: Figure 4 and Figure 5 As shown, the controller 500 includes a rectangular sheet-like PCB circuit board, which is fixedly mounted above the main circuit board 200 via columnar connectors. The controller 500 also includes a microprocessor, which connects to other components of the transient electromagnetic pulse source to coordinate the operation, parameter configuration, and status monitoring of each component. For example, the controller 500 can monitor the charging state of the capacitor assembly 400; when the capacitor assembly 400 is fully charged, the controller 500 generates a stop charging command to control the capacitor assembly 400 to stop charging.

[0045] The DC / DC converter 600 is disposed in the second mounting area 120. The DC / DC converter 600 is connected to the controller 500 and the pulse transmitting component 300 via the main circuit board 200 to receive the output current and transmission command set by the controller 500, and to control the pulse transmitting component 300 to output current according to the set value. The structure of the DC / DC converter 600 is as follows: Figure 4 and Figure 5 As shown, the DC / DC converter 600 includes a rectangular sheet-like PCB circuit board. The PCB circuit board of the DC / DC converter 600 is located between the main circuit board 200 and the controller 500, and is fixedly connected to the main circuit board 200 through a columnar connector.

[0046] The capacitor assembly 400 and pulse emission assembly 300 are disposed in the first mounting area 110, and the controller 500 and DC / DC converter 600 are disposed in the second mounting area 120. The main circuit board 200, capacitor assembly 400, pulse emission assembly 300, controller 500, and DC / DC converter 600 are arranged in a multi-layer stacked manner within the housing 100, allowing the components of the transient electromagnetic pulse source to be arranged in layers and uniformly, thereby making reasonable use of space and reducing the overall size and weight of the transient electromagnetic pulse source. In this specific embodiment, the transient electromagnetic pulse source weighs 2.7 kg, has an output current range of 0–60 A, and a turn-off time of 0.8 μs. In other embodiments, the transient electromagnetic pulse source may weigh 4 kg, have an output current range of 120 A, and a turn-off time of 1 μs. Therefore, the transient electromagnetic pulse source proposed in this application is suitable for applications such as all-aircraft transient electromagnetic detection and shallow subsurface detection.

[0047] Further, the transient electromagnetic pulse source further comprises an operation panel 700 as shown in Figure 4 and Figure 5 The operation panel 700 is fixedly arranged on the surface of the shell 100 and connected with the controller 500, and the controller 500 sets the emission instruction and the output current through the operation panel 700. Specifically, the operation panel 700 comprises a rectangular sheet-shaped PCB circuit board, and the PCB circuit board of the operation panel 700 is located at the top of the shell 100 and fixedly connected with the shell 100 through a columnar connecting piece. The operation panel 700 further comprises a touch display screen and an indicator lamp arranged above the PCB circuit board thereof, which are used for configuring the parameters of the transient electromagnetic pulse source and indicating the state of each component.

[0048] As shown in Figure 6 , the transient electromagnetic pulse source further comprises a heat dissipation assembly 800 arranged in the first mounting area 110. Specifically, the heat dissipation assembly 800 can be a heat dissipation fin 810 arranged on the left and right sides of the first mounting area 110, and the two heat dissipation fins 810 are respectively fixedly connected with the left and right side walls of the shell 100. The heat dissipation assembly 800 can also be a fan 820 arranged on the back side of the first mounting area 110, and the number of the fan 820 can be multiple, and the multiple fans 820 are fixedly connected with the back wall of the shell 100.

[0049] When the transient electromagnetic pulse source is working, the capacitor assembly 400 and the pulse emission assembly 300 arranged in the first mounting area 110 will generate a large amount of heat, which is the main heat generating component of the transient electromagnetic pulse source. Arranging the heat dissipation assembly 800 in the first mounting area 110 is conducive to rapid and effective heat dissipation, which improves the reliability of the transient electromagnetic pulse source.

[0050] In order to further improve the reliability of the transient electromagnetic pulse source, in the specific embodiment, the transient electromagnetic pulse source further comprises a heat insulation assembly 900 arranged between the first mounting area 110 and the second mounting area 120. Specifically, the heat insulation assembly 900 can be a block-shaped heat insulation sponge as shown in Figure 3 , which is pasted on the surface of the main circuit board 200 at the bottom and extends to the top wall direction of the shell 100 at the top, so as to divide the shell 100 along the length direction and form the first mounting area 110 and the second mounting area 120.

[0051] By arranging the heat insulation assembly 900, the heat conduction from the first mounting area 110 to the second mounting area 120 can be effectively limited, which is conducive to the rapid conduction of heat in the first mounting area 110 to the outside of the shell 100, thereby improving the reliability of the transient electromagnetic pulse source.

[0052] The above only describes the preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A transient electromagnetic pulse source for application to an unmanned aerial vehicle, the unmanned aerial vehicle carrying a direct current power source and a transmitting coil, characterised in that, The transient electromagnetic pulse source comprises: a shell (100) having a first mounting area (110) and a second mounting area (120) formed along the length direction thereof; a main circuit board (200) fixedly arranged in the shell (100) and connected with the DC power supply; a pulse emission assembly (300) arranged in the first mounting area (110) and connected with the DC power supply and forming a power supply loop with the transmitting coil; a capacitor assembly (400) arranged in the first mounting area (110) and connected with the pulse emission assembly (300) to reduce the fluctuation degree of output voltage through energy storage buffering; a controller (500) arranged in the second mounting area (120) and used for setting emission instructions and output current; a DC / DC converter (600) arranged in the second mounting area (120), the DC / DC converter (600) being connected with the controller (500) and the pulse emission assembly (300) through the main circuit board (200) to receive the output current and emission instructions set by the controller (500) and control the pulse emission assembly (300) to apply the output current to the power supply loop.

2. The transient electromagnetic pulse source of claim 1, wherein, The pulse emission assembly (300) is located between the main circuit board (200) and the capacitor assembly (400); and the DC / DC converter (600) is located between the main circuit board (200) and the controller (500).

3. The transient electromagnetic pulse source of claim 2, wherein, The weight of the transient electromagnetic pulse source is not greater than 4 kg.

4. The transient electromagnetic pulse source of claim 3, wherein, The output current range of the transient electromagnetic pulse source is 0-120 A.

5. The transient electromagnetic pulse source of claim 4, wherein, The turn-off time of the transient electromagnetic pulse source is not greater than 1 μs.

6. The transient electromagnetic pulse source of claim 5, wherein, Further comprising an operation panel (700) fixedly arranged on the surface of the shell (100) and connected with the controller (500), the controller (500) setting the emission instructions and output current through the operation panel (700).

7. The transient electromagnetic pulse source of claim 6, wherein, Further comprising a heat dissipation assembly (800) arranged in the first mounting area (110).

8. The transient electromagnetic pulse source of claim 7, wherein, The heat dissipation assembly (800) comprises a heat sink (810).

9. The transient electromagnetic pulse source of claim 7, wherein, The heat dissipation assembly (800) comprises a fan (820).

10. The transient electromagnetic pulse source of claim 1, wherein, Further comprising a heat insulation assembly (900) arranged between the first mounting area (110) and the second mounting area (120) to limit the conduction of heat from the first mounting area (110) to the second mounting area (120).

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