A sonic insecticide device in a space capsule

Abstract

The present invention relates to the field of sonic insecticide, and specifically to a sonic insecticide device in a space capsule, wherein the sonic insecticide device is composed of a plurality of sonic insecticide units and a connecting device, and can be spliced ​​and assembled according to the size of the area actually requiring insecticide elimination. The sonic insecticide device surrounds the insect elimination area, and the ultrasonic waves generated by the sonic insecticide unit can be transmitted in the connecting device and propagated outward through a plurality of through holes. The sonic insecticide device in the space capsule, through the combined use of the sonic insecticide unit and the connecting device, realizes three-dimensional insect elimination in the insect elimination area, expands the area affected by the sonic wave, and enhances the insect elimination effect.

Description

Technical Field

[0001] The invention belongs to the technical field of sonic insecticide removal, and in particular relates to a sonic insecticide removal device used in a space capsule. Background Art

[0002] No matter where humans live, they have to solve the problem of food. In order to solve the problem of food, people are not only looking to the land and the ocean, but also to space for answers. To survive in space, growing crops is a must.

[0003] Due to pollution, microgravity, and the risk of harm to astronauts, pesticides cannot be used to kill insects in space capsules. Among the physical pest control technologies for plants, acoustic wave pest control has been proven to be an effective technical means. The basic principle of acoustic wave pest control is to generate sound waves of a specific frequency to resonate with the body of the pest, causing damage to its body tissues due to this resonance, thereby achieving the purpose of damaging and killing the pest. Compared with pesticide pest control methods, the acoustic wave method of killing insect eggs has significant advantages such as no pesticide residue, no pollution to the environment and water sources in the space capsule, and no harm to the health of astronauts. Summary of the invention

[0004] The purpose of the present invention is to provide a sonic insecticide device in a space capsule to solve the problem that pesticides cannot be used to eliminate insects in plants in the space capsule.

[0005] To achieve the above-mentioned purpose, the present invention discloses a sonic insecticide device in a space capsule, comprising a sonic insecticide unit for generating and emitting ultrasonic waves and a connecting device for surrounding an insecticide area and expanding the influence range of the sonic waves.

[0006] The acoustic wave pest control unit comprises a base, a power supply, an acoustic signal generator, a power amplifier and a transducer group.

[0007] The acoustic signal generator is used to generate acoustic waves of specific frequency and waveform, which can resonate with the body of the pest, causing its body tissue to be damaged due to the resonance, thereby achieving the purpose of damaging and killing the pest.

[0008] Furthermore, the signal generator frequency used in the present device is 18-55kHz.

[0009] It is understandable that the frequency range of human hearing is 20Hz-20kHz, and the use of 18-55kHz signals can prevent effects on human hearing (although 18-20kHz is an audible sound band, most people can hardly hear any sound in this frequency band, or the sound they hear is very weak, so this frequency band is also covered in the present invention, and the transducer unit mentioned later actually also covers this audible sound band).

[0010] Furthermore, the signal generator may be an oscillating circuit, or may use DSP, ARM, FPGA, etc. to generate periodic signals such as sine waves, square waves, triangle waves, etc.

[0011] The power amplifier is used to amplify the power of the electrical signal of specific frequency and waveform generated by the sound signal generator to drive five transducer units simultaneously.

[0012] The base is a quadrangular prism, two side faces of which are isosceles trapezoids with base angles of 60°; the upper base of the quadrangular prism is a square with the upper base of the isosceles trapezoid as its side length, and the lower base is a rectangle with the upper and lower bases of the isosceles trapezoid as adjacent sides; the remaining two faces are rectangles with the upper base and waist of the isosceles trapezoid as adjacent sides; the plane where the isosceles trapezoid is located is perpendicular to both the upper base and the lower ground.

[0013] Furthermore, the power supply, the acoustic signal generator and the power amplifier are all integrated inside the base.

[0014] The transducer group is composed of 5 transducer units, which are arranged on the surface of the base. Except for the square surface with longer side length, one transducer unit is arranged on each of the other surfaces.

[0015] The transducer unit is used to convert the power-amplified electrical signal into an acoustic signal and propagate it into a propagation medium (air, water, solid, etc.); the transducer can be composed of a single magnetostrictive transducer, a piezoelectric transducer, etc.

[0016] Furthermore, a connection port is arranged on the periphery of the transducer unit on the side of the base, and the connection port is a tubular structure. An external thread is arranged outside the connection port for connecting a connection device surrounding the insect killing area.

[0017] The connecting device is used to connect and strengthen each sonic pest control unit and expand the sonic wave influence area to meet the pest control needs of plants with larger volumes.

[0018] A plurality of through holes are arranged at equal intervals on the same side of the tubular structure, and the sound waves emitted by the transducer unit can be transmitted in the propagation channel formed by the tubular structure and propagate outward through the through holes, thereby enhancing the influence range of the sound waves and expanding the acoustic wave insect killing area.

[0019] Furthermore, a channel wall of the propagation channel is paved with a metal layer.

[0020] It is understandable that sound waves propagate faster and have a smaller attenuation coefficient in fixed metals. This design is convenient for further reducing the attenuation of sound wave energy in the propagation channel.

[0021] Furthermore, the metal layer is made of copper.

[0022] It is understandable that, although the cost of copper is higher than that of metals such as iron, the propagation effect of sound waves in copper is much greater than that in materials such as iron, so the metal layer of the device is preferably made of copper.

[0023] Furthermore, both ends of the connecting device are provided with internal threads matching the external threads of the interface in the sonic insect killing unit.

[0024] It can be understood that this design facilitates the connection and disassembly of the connecting device and each sonic insect-killing unit to meet the sonic insect-killing needs of different areas.

[0025] In combination with the above technical solutions and the technical problems solved, the advantages and positive effects of the technical solutions to be protected by the present invention are as follows:

[0026] 1) The sonic insecticidal units of the present invention are independent of each other, and each sonic insecticidal unit is provided with five transducer units, each transducer unit can emit ultrasonic waves of different frequencies, and the sound waves of different frequencies will not interfere with each other; secondly, after a plurality of sonic insecticidal units are combined into a sonic insecticidal device suitable for a certain area size, a large number of independent transducer units can cover a certain frequency band, reduce the resonance frequency search time, and have stronger portability; thirdly, after a plurality of sonic insecticidal units are combined with a connecting device, ultrasonic waves are transmitted in the propagation channel of the connecting device and emitted through the through hole, which can form a three-dimensional surround insecticidal sound wave for the plant, greatly improving the sonic insecticidal ability; furthermore, the sonic insecticidal device in a space warehouse disclosed by the present invention is a detachable assembly structure, which is convenient for carrying and transportation, and can be assembled into sonic insecticidal devices of different sizes according to the height of the plants in the culture warehouse, providing great convenience for different needs.

[0027] 2) The present invention discloses an acoustic wave insecticide device in a space capsule, which is composed of an acoustic wave insecticide unit and a connecting device, and is suitable for plant culture boxes of different sizes in the space capsule to meet the acoustic wave insecticide needs of different area sizes.

[0028] 3) The sonic insecticide device in the space capsule disclosed by the present invention is a detachable assembly structure, which is assembled through the external thread at the connecting port on the sonic insecticide unit and the matching internal thread in the connecting device. Sonic insecticide devices of different sizes can be assembled according to the size of the plants that need to be insecticidal.

[0029] 4) The expected benefits and commercial value of the technical solution of the present invention after transformation are as follows: Since the launch of the first artificial earth satellite, how to use plants to ensure the food, oxygen and pure water needed for human survival in the extraterrestrial environment has become one of the most concerned issues in space life sciences. Space planting may also have insect pest problems; the acoustic wave insecticide killing device in the space capsule disclosed in the patent of the present invention can provide an effective way for the development of space planting and space life sciences in solving the problem of insect pests, and when extraterrestrial resources are utilized in the future, it will be impossible to build a pesticide production factory on the surface of the planet in a short period of time. The space capsule acoustic wave insecticide killing device provided by the present invention will be an important technical means for pest control in plant production on the surface of the planet, and thus form a green, environmentally friendly, portable control device that can be used for pest control in plant production in outer space, greatly reducing the production cost of space plants, and thus generating huge commercial value.

[0030] 5) Whether the technical solution of the present invention solves the technical problems that people have been eager to solve but have never succeeded in solving: Space plant production will be an important development direction of future aerospace technology, and it is also an important basic technology necessary for humans to utilize outer space resources. In space plant production, since the pesticide production industry chain cannot be realized in the short term, the use of physical pest control technology is almost the only option for space plant pest control. The ultrasonic insecticide killing device in a space capsule disclosed by the present invention solves the problem that pesticides cannot be used for plant insecticide killing in a space capsule, and utilizes the proposed combination of an ultrasonic insecticide killing unit and a connecting device to expand the ultrasonic insecticide killing area when the number of transducer units is small, thereby greatly improving the ultrasonic insecticide killing ability. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A block diagram of an acoustic system of a sonic insecticide unit provided in an embodiment of the present invention;

[0032] Figure 2 A schematic diagram of the structure of a sonic insecticide unit provided in an embodiment of the present invention;

[0033] Figure 3 A schematic diagram of the structure of a connecting device provided in an embodiment of the present invention;

[0034] Figure 4 A schematic diagram of the sonic insecticide device in a space capsule provided by an embodiment of the present invention being applied to a small plant scene;

[0035] Figure 5 A schematic diagram of the sonic insecticide device in a space capsule provided by an embodiment of the present invention being applied to a large plant scene;

[0036] In the figure: 1, 3, 4, 7, 10 - transducer unit; 2, 5, 6, 9 - connection port; 11 - external thread of connection port; 8 - base of ultrasonic pest control unit; 12 - internal thread of connecting device; 13 - through hole; 14 - connecting device; 15 - small plant; 16 - larvae on small plant; 17 - assembly example 1 of ultrasonic pest control device; 18 - assembly example 2 of ultrasonic pest control device; 19 - large plant; 20, 21 - larvae on large plant. DETAILED DESCRIPTION

[0037] The technical solutions in the present invention will be clearly and completely described below in conjunction with the drawings in the present invention. The components of the present invention generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present invention.

[0038] The embodiment of the present invention provides a sonic insecticide device in a space capsule, comprising:

[0039] a sonic insecticidal unit for generating and emitting ultrasonic waves; and

[0040] A connection device used to surround the pest control area and expand the range of influence of sound waves.

[0041] The sonic insecticide unit includes a base, a power supply, a sound signal generator, a power amplifier, and a transducer group;

[0042] The acoustic signal generator is used to generate acoustic waves of a specific frequency and waveform, which can resonate with the body of the pest, causing damage to its body tissue due to the resonance, thereby achieving the purpose of damaging and killing the pest; the acoustic wave frequency range generated by the acoustic signal generator is 18-55kHz, and an oscillation circuit can be used, or DSP, ARM, FPGA, etc. can be used to generate periodic signals such as sine, square waves, triangle waves, etc.;

[0043] The power amplifier amplifies the power of the electrical signal of a specific frequency generated by the sound signal generator, and drives the transducer group to emit ultrasonic waves.

[0044] The base is a quadrangular prism, two side surfaces of which are isosceles trapezoids with a base angle of 60°; the upper base of the quadrangular prism is a square with the upper base of the isosceles trapezoid as the side length, and the lower base is a rectangle with the upper base and lower base of the isosceles trapezoid as adjacent sides; the remaining two sides are rectangles with the upper base and waist of the isosceles trapezoid as adjacent sides; the plane where the isosceles trapezoid is located is perpendicular to the upper base and the lower ground; the power supply, sound signal generator, and power amplifier are all integrated inside the base; a connecting port is arranged on the periphery of the transducer unit on the side of the base, and the connecting port is a tubular structure, and an external thread is arranged on the outside of the connecting port for connecting a connecting device surrounding the insect killing area.

[0045] The transducer group consists of 5 transducer units, which are arranged on the surface of the base. Except for the square surface with a longer side length, one transducer unit is arranged on each of the other surfaces.

[0046] A plurality of through holes are arranged at equal intervals on the same side of the tubular structure, and the sound waves emitted by the transducer unit can be transmitted in the propagation channel formed by the tubular structure and propagate outward through the through holes, thereby strengthening the influence range of the sound waves and expanding the acoustic wave pest control area.

[0047] The channel wall of the propagation channel is paved with a metal layer, and the metal layer is preferably made of copper material.

[0048] The connecting device is a hollow tubular structure, and a plurality of through holes are arranged at equal intervals on the same side of the tubular structure; internal threads matching the external threads of the interface in the sonic insect-killing unit are arranged at both ends of the connecting device; an ultrasonic propagation channel is formed inside the tubular structure of the connecting device, and the through holes connect the propagation channel to the outside world; this design facilitates the connection and disassembly of the connecting device and each sonic insect-killing unit to meet the sonic insect-killing needs in different areas.

[0049] Example 1

[0050] See also Figure 1 , Figure 2 , Figure 3 :

[0051] The invention discloses a sonic insect-killing unit. Figure 1 The acoustic system block diagram of the acoustic wave pest control unit includes a power supply, a signal generator, a power amplifier, and a transducer.

[0052] Sound signal generator: Generates sound waves of specific frequency and waveform, with a frequency range of 18-55kHz. The sound waves can resonate with the body of the pest, and its body tissue is damaged due to this resonance, achieving the purpose of damaging and killing the pest. An oscillating circuit can be used, or DSP, ARM, FPGA, etc. can be used to generate periodic signals such as sine, square wave, triangle wave, etc.

[0053] The power amplifier is used to amplify the power of the electrical signal of specific frequency and waveform generated by the sound signal generator to drive five transducer units simultaneously.

[0054] Power supply: Provides energy to drive the acoustic signal generator and power amplifier.

[0055] Transducer: used to convert the power-amplified electrical signal into an acoustic signal and transmit it to the propagation medium (air, water, solid, etc.); the transducer can be composed of a magnetostrictive transducer, a piezoelectric transducer, etc.

[0056] Figure 2 Schematic diagram of the structure of the sonic wave pest control unit, the left and right figures are respectively the front and back sides of the sonic wave pest control unit.

[0057] The base 8 is a quadrangular prism, two side faces of which are isosceles trapezoids with base angles of 60°; the upper base of the quadrangular prism is a square with the upper base of the isosceles trapezoid as its side length, and the lower base is a rectangle with the upper and lower bases of the isosceles trapezoid as adjacent sides; the remaining two faces are rectangles with the upper base and waist of the isosceles trapezoid as adjacent sides; the plane where the isosceles trapezoid is located is perpendicular to both the upper base and the lower ground.

[0058] The power supply, signal generator and power amplifier are all integrated inside the base 8; five transducer units 1, 3, 4, 7 and 10 are arranged on the surface of the base 8, and one transducer unit is arranged on each of the other surfaces except the lower bottom surface of the base 8.

[0059] The acoustic signal generator generates an ultrasonic electrical signal that can resonate with the larvae. The power amplifier amplifies the ultrasonic electrical signal and drives the transducer units 1, 3, 4, 7, and 10. The transducer units 1, 3, 4, 7, and 10 convert the electrical signal into an acoustic signal to generate an ultrasonic wave.

[0060] The ultrasonic waves emitted by the transducer unit 3 propagate directly in the air and are directed toward the insect killing area.

[0061] The ultrasonic waves emitted by the transducer units 1, 4, 7, 10 propagate in the propagation channel of the connecting device 14, and propagate into the air at the through hole 13, and point to the insect killing area.

[0062] The transducer units 1 , 4 , 7 , 10 are provided with connection ports 2 , 5 , 6 , 9 on their peripheries, respectively, for connecting to the connection device 14 .

[0063] Furthermore, external threads 11 are provided on the connection ports 2 , 5 , 6 , 9 , and correspondingly, internal threads 12 matching therewith are provided at both ends of the connection device 14 .

[0064] Figure 3 A schematic diagram of the structure of the connecting device.

[0065] The connecting device 14 is a tubular structure, which is hollow and has an ultrasonic wave propagation channel formed inside. A plurality of through holes 13 are evenly spaced on the side of the connecting device 14 facing the insect killing area. The through holes 13 connect the propagation channel with the outside world. The channel wall of the propagation channel is paved with a metal layer made of copper.

[0066] It can be understood that the connecting device and the ultrasonic insecticide unit are detachably connected via threads. At the same time, the user can connect multiple ultrasonic insecticide units according to the size and height of the plants to be insecticidal, thereby expanding the scope of ultrasonic insecticidal.

[0067] Please continue reading Figure 4 :

[0068] When the height of the plant 15 to be subjected to ultrasonic pest control is relatively small, the ultrasonic pest control unit and the connecting device are assembled into a device 17, and the device 17 is used to surround the plant 15;

[0069] Since the base 8 of the ultrasonic pest control unit is a trapezoidal quadrangular prism, and the bottom angle of the trapezoidal surface is 60°, after the ultrasonic pest control unit and the connecting device are assembled in a single layer, a regular hexagon such as device 17 is formed, and the plant 15 to be pest controlled is placed in the center of the regular hexagonal device 17, so that the device 17 surrounds the plant 15.

[0070] The acoustic system is turned on, and the acoustic signal generator generates an ultrasonic electric signal that can resonate with the larvae. The power amplifier amplifies the ultrasonic electric signal and drives the transducer units 1, 3, 4, 7, and 10. The transducer units 1, 3, 4, 7, and 10 convert the electric signal into an acoustic signal to generate an ultrasonic wave. The ultrasonic wave generated by each acoustic wave pest control unit can be emitted to the pest control area. At the same time, the ultrasonic wave can be transmitted in the propagation channel of the connecting device 14 and propagated outward through the through hole 13, greatly enhancing the effect of the acoustic wave pest control, so as to achieve the effect of killing the larvae 16 in the plant 15.

[0071] Example 2

[0072] See also Figure 5 :

[0073] When the plant 19 to be subjected to ultrasonic pest control is relatively high, the ultrasonic pest control unit and the connecting device are assembled into a device 18, and the device 18 is used to surround the plant 19;

[0074] Since the single-layer acoustic wave insect-killing device is a regular hexagon as shown in device 17, after the multi-layer acoustic wave insect-killing device 17 is assembled longitudinally through the connecting device 14, a regular hexagonal prism tower structure as device 18 is formed, and the plant 19 to be insect-killed is placed in the center of the space surrounded by the acoustic wave insect-killing device 18 of the regular hexagonal prism tower structure, so that the device 18 surrounds the plant 19.

[0075] The acoustic system is turned on, and the acoustic signal generator generates an ultrasonic electrical signal that can resonate with the larvae. The power amplifier amplifies the ultrasonic electrical signal and drives the transducer units 1, 3, 4, 7, and 10. The transducer units 1, 3, 4, 7, and 10 convert the electrical signal into an acoustic signal to generate an ultrasonic wave. At the same time, the ultrasonic wave can be transmitted in the propagation channel of the connecting device 14 and propagate outward through the through hole 13 to form a three-dimensional surrounding acoustic wave insect-killing area, which greatly enhances the acoustic wave insect-killing effect, so as to kill the larvae or eggs that may exist in the larvae 20, 21, etc. in the plant 19.

[0076] It can be understood that, although 18 ultrasonic insecticidal units and 30 connecting devices are shown in this embodiment, in actual situations, the size of the connecting devices can be designed according to actual conditions, and the size of the assembled ultrasonic insecticidal devices can also be adjusted and installed according to the actual insecticidal range requirements, and this embodiment does not impose any restrictions on this.

[0077] The embodiments of the present invention have achieved some positive effects during the development or use process, and indeed have great advantages over the prior art. The following content is described in conjunction with data, charts, etc. of the test process.

[0078] Researchers such as Kandasamy Kalimuthu evaluated the control effect of acoustic ultrasound devices on Aedes aegypti larvae and published a paper titled "Ultrasonic Technology Applied against Mosquito Larvae" in the journal Applied Sciences in 2020. The results showed that first- and second-instar larvae were sensitive to the frequency range of 18-30kHz of the larval device. Ultrasonic waves with a frequency of 18-30kHz were applied for 180 seconds, and the mortality rate of larvae at 60 cm from the transducer was 100%. And as the distance from the transducer decreases, the time to kill larvae by ultrasound gradually decreases. This study proves that ultrasound can indeed kill small pests very effectively.

[0079] The comparison results between the present invention and the research results of Kandasamy Kalimuthu et al. are listed in Table 1.

[0080] Table 1 Comparison of the advantages of the present invention

[0081]

[0082]

[0083] As can be seen from Table 1, the present invention has obvious advantages such as wide coverage frequency bandwidth, effective sound field control range can cover the whole plant, and ultrasonic action energy is stronger.

[0084] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved. In addition, it should be understood that although this specification is described in accordance with the implementation methods, not each implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A sonic insecticide device in a space capsule, characterized in that: include: a sonic insecticidal unit for generating and emitting ultrasonic waves; and a connection device for surrounding the pest control area and expanding the range of influence of the sound waves; The acoustic wave pest control unit comprises a base, a power supply, an acoustic signal generator, a power amplifier, and a transducer group; The base is a quadrangular prism, two sides of which are isosceles trapezoids with a base angle of 60°; the upper base of the quadrangular prism is a square with the upper base of the isosceles trapezoid as the side length, and the lower base is a rectangle with the upper base and lower base of the isosceles trapezoid as adjacent sides; the remaining two sides are rectangles with the upper base and waist of the isosceles trapezoid as adjacent sides; the plane where the isosceles trapezoid is located is perpendicular to the upper base and the lower ground; The power supply, the acoustic signal generator, and the power amplifier are all integrated inside the base; The transducer group is composed of 5 transducer units, which are arranged on the surface of the base, and each transducer unit can emit ultrasonic waves of different frequencies; A connection port is arranged on the periphery of the transducer unit on the side of the base, the connection port is a tubular structure, and an external thread is arranged on the outside of the connection port for connecting a connection device surrounding the insect killing area; A number of through holes are arranged at equal intervals on the same side of the tubular structure. The sound waves emitted by the transducer unit can be transmitted in the propagation channel formed by the tubular structure and propagate outward through the through holes, thereby enhancing the influence range of the sound waves and expanding the acoustic insect killing area. The channel wall of the propagation channel is paved with a metal layer, which is made of copper material.

2. The sonic insecticide device in a space capsule according to claim 1, characterized in that: The acoustic signal generator is used to generate acoustic waves of a specific frequency and waveform, which can resonate with the body of the pest, causing damage to its body tissue due to the resonance, thereby achieving the purpose of damaging and killing the pest; the acoustic wave frequency range generated by the acoustic signal generator is 18-55kHz, and an oscillation circuit or DSP, ARM, FPGA is used to generate sine, square wave, triangle wave periodic signals; The power amplifier amplifies the power of the electrical signal of a specific frequency generated by the sound signal generator, and drives the transducer group to emit ultrasonic waves.

3. The sonic insecticide device in a space capsule according to claim 1, characterized in that: The acoustic signal generator generates an ultrasonic electrical signal that can resonate with the larvae. The power amplifier amplifies the ultrasonic electrical signal and then drives the transducer unit. The transducer unit converts the electrical signal into an acoustic signal to generate an ultrasonic wave.

4. The sonic insecticide device in a space capsule according to claim 1, characterized in that: The transducer unit is used to convert the power-amplified electrical signal into an acoustic signal and propagate it into a propagation medium; the transducer consists of a single magnetostrictive transducer and a piezoelectric transducer; a connecting port is arranged on the periphery of the transducer unit on the side of the base, and the connecting port is a tubular structure with an external thread on the outside, which is used to connect a connecting device surrounding the insect killing area.

5. The sonic insecticide device in a space capsule according to claim 1 or 3, characterized in that: The connecting device is a hollow tubular structure, and a plurality of through holes are arranged at equal intervals on the same side of the tubular structure; internal threads matching the external threads of the connecting port in the sonic insect-killing unit are arranged at both ends of the connecting device; an ultrasonic propagation channel is formed inside the tubular structure of the connecting device, and the through holes connect the propagation channel to the outside world; this design facilitates the connection and disassembly of the connecting device and each sonic insect-killing unit to meet the sonic insect-killing needs in different areas.

6. The sonic insecticide device in a space capsule according to claim 1, characterized in that: It is a detachable assembly structure, the connecting device and the sonic insect-killing unit are detachably connected by threads, and sonic insect-killing devices of different sizes can be assembled according to the size of the plants to be killed; Users can connect multiple ultrasonic pest control units according to the size and height of the plants to be pest controlled, forming a single-layer or multi-layer regular hexagonal prism tower structure, surrounding the plants, thereby expanding the range of ultrasonic pest control.

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