A multi-channel detection device for screening of insect phototaxis and preference wavelength light sources

Abstract

The utility model discloses a kind of multi-channel detection devices for insect phototaxis and preference wavelength light source screening, including support plate and multiple light response test arms of proximal end opening, distal end closed, the included angle between adjacent light response test arms is not more than 90 ℃ and the opening end side of light response test arm can constitute the movable chamber of four around and bottom closed, the probe of the spectrometer on the light-tight cover on the movable chamber upper cover can be aligned with the channel of light response test arm;Only the closed end of a light response test arm is not configured LED lamp as light source, LED lamp is connected with programmable DC power supply controller by circuit;Infrared camera capable of shooting inside light response test arm is arranged below the distal end of light response test arm.The utility model can test the positive and negative phototaxis of insect, and screen the preference wavelength light source of insect under the coexistence of different wavelength light source with same irradiance;It is easy to operate, high flexibility, make experiment more efficient.

Description

Technical Field

[0001] This utility model relates to an insect detection device, specifically a multi-channel detection device for screening insects based on their phototaxis and preference wavelengths. Background Technology

[0002] Nocturnal migratory insects are significant pests affecting my country's agricultural and livestock food security. These insects are active at night and capable of long-distance migration. In recent years, the severity of these pests has increased, causing enormous losses to my country's agricultural and livestock production. Taking the grassland moth (Loxostege sticticalis) and the brown planthopper (Nilaparvata lugens) as examples, both are major migratory pests listed as Class I crop pests in my country. Currently, the grassland moth has entered its fourth occurrence cycle, with its population and affected area increasing year by year, seriously threatening the production security of grain, oil, and forage crops. Meanwhile, the brown planthopper is a significant migratory pest of rice in my country, and its rampant infestation poses a huge threat to rice production safety, with incalculable losses in years of outbreaks.

[0003] To effectively control the rampant damage caused by these pests and ensure the safety of agricultural and livestock production in my country, key technologies such as physical control, agricultural control, ecological regulation, biological control, and chemical control can be established in the main insect-infested areas to create a scientific control system and reduce insect populations. Meanwhile, research shows that nocturnal migratory insects are more sensitive to light and mostly exhibit strong phototaxis. Light trapping devices such as black light lamps, high-pressure mercury lamps, insect monitoring lamps, and frequency-vibration insecticidal lamps are currently widely used in insect monitoring and population control. These devices not only accurately monitor insect population dynamics and provide basic data for pest forecasting, but also attract and kill large numbers of adult insects, reducing their mating probability and the number of eggs laid in the field, thereby achieving the control objective.

[0004] However, most insect-attracting lamps currently used in production, while killing insects, also significantly damage natural enemy populations, increasing the potential risk of insect outbreaks. Research shows that while there are similarities in the visual systems of insects, differences also emerge between species through evolution. To better utilize phototaxis for accurate pest control, further research on insect phototaxis is needed, especially on phototactic behavior at specific wavelengths under various light waves. This will help in the iterative optimization of insect-attracting lamps, enabling more precise pest trapping. However, existing experimental setups for testing insect preferences for different wavelengths of light sources need improvement. The control of irradiance at different wavelengths of light during experiments is not rigorous enough, and the recording of insect phototactic behavior is not objective enough. Utility Model Content

[0005] The purpose of this invention is to address the problems existing in the prior art by providing a multi-channel detection device for screening insect preference wavelength light sources that is simple to operate and easy to use.

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] A multi-channel detection device for screening wavelength light sources based on insect phototaxis and preference is characterized in that: the multi-channel detection device includes a support plate and multiple light response test arms placed on the support plate, which are open at the near end and closed at the far end. The included angle between adjacent light response test arms is no greater than 90°, and the open end of the light response test arm can form an active chamber that is closed on all sides and at the bottom. The active chamber is covered with an opaque cover, and the probe of a spectrometer inserted into the active chamber from the opaque cover can be aligned with the channel of the light response test arm. Only one light response test arm is not equipped with an LED light as a light source at its closed end (i.e., the closed ends of the other light response test arms are equipped with LED lights as light sources). The LED lights are connected to a programmable DC power controller via circuitry, and the programmable DC power controller can control the LED lights. An infrared camera capable of capturing images of the inside of the light response test arm is arranged below the far end of the light response test arm.

[0008] The light response test arm is composed of at least one light response channel arm segment and one light response functional arm segment. The light response channel arm segment is a four-sided frame structure with open ends and opaque walls on all four sides. The light response functional arm segment is a five-sided frame structure with an open near end, a closed far end, three opaque walls, and a completely or partially transparent bottom wall. The far end opening of one or more interconnected light response channel arm segments can be sealed and opaque to the near end opening of the light response functional arm segment.

[0009] The opaque inner wall of the light response test arm is fitted with a pure black light-absorbing plate.

[0010] The distal bottom of the light response test arm is provided with a transparent mounting position, which is used to install or place an infrared camera. The distal bottom of the light response test arm where the transparent mounting position is located is completely transparent and the rest of the light response test arm is opaque, or the rest of the light response test arm except for the transparent mounting position is opaque.

[0011] Both the optical response channel arm segment and the optical response functional arm segment are cuboids.

[0012] The length of a single segment or the combined length of multiple segments of the light-response channel arm are set according to the habits of the insect.

[0013] The arm length of the light response test arm can be set according to the insect's activity level. This can be achieved by setting different lengths of light response channel arm segments and light response function arm segments, or by increasing or decreasing the number of light response channel arm segments, thus making the light response test arm more widely applicable.

[0014] The support plate is covered with pure black light-absorbing fabric, and the four sides of the pure black light-absorbing fabric hang down, making the support plate opaque around the edges; the opaque cover is made of pure black light-absorbing material.

[0015] The closed end of the light response test arm is provided with an LED lamp mounting slot (that is, the closed end of the light response functional arm segment is provided with an LED lamp mounting slot). The LED lamp mounting slot is used to install an aluminum substrate with LED lamps. The LED lamps are connected to a programmable DC power controller through a neutral wire and a live wire.

[0016] The programmable DC power controller is equipped with a voltage adjustment knob, a current adjustment knob, a power switch, a live wire, a ground wire, and a neutral wire.

[0017] In the light response test arms of this multi-channel detection device, there is a light response test arm without a light source, which is used as a completely black light response test arm to conduct a control experiment on the negative phototaxis of insects. Of course, an LED light can be set but not used. The LED lights on the other light response test arms with light sources can provide light sources of different wavelengths, and the input current is adjusted by a programmable DC power controller to ensure that different wavelength light sources have consistent irradiance.

[0018] If necessary, one of the LED lights in the light response test arm can be selected and set to full spectrum to serve as a control for the positive phototaxis of insects.

[0019] The infrared camera is connected to the video recorder via a network cable.

[0020] The spectrometer probe is L-shaped.

[0021] Compared with the prior art, the present invention has the following advantages:

[0022] This invention uses a multi-channel detection device to test the positive and negative phototaxis of insects, as well as their preference for different wavelengths of light with the same intensity (irradiance) when different wavelength light sources are present simultaneously. It is simple to operate, highly flexible, and can greatly reduce the time cost of experiments, making experiments more efficient.

[0023] The multi-channel detection device of this invention can screen out the insect's preference for multiple different wavelengths under the same light intensity.

[0024] The photoresponse testing arm of this invention is transparent only at the bottom distal end, while the rest of the arm is opaque, making it easy to observe and record the phototaxis behavior of insects towards specific wavelengths under various light waves.

[0025] An infrared camera is installed at the bottom of the distal end of the light response test arm of this utility model for easy recording. The infrared camera is connected to a video recorder via a network cable to store the video data on a hard drive for later viewing on a display screen.

[0026] This invention has a simple structure and is easy to assemble. The light intensity of the LED lamp can be directly controlled by a programmable DC power supply controller, making it easy to operate.

[0027] The multi-channel detection device of this invention can be easily disassembled after the experiment for easy placement and storage. Attached Figure Description

[0028] Appendix Figure 1 A schematic diagram of the structure of a multi-channel detection device for screening wavelength light sources based on insect phototaxis and preference, provided by this utility model;

[0029] Appendix Figure 2 A schematic diagram of the structure of the eight light response test arms provided by this utility model placed on the support plate;

[0030] Appendix Figure 3 A partially enlarged view of the segmented light response test arm and the connected LED lamp provided by this utility model;

[0031] Appendix Figure 4 A plan view showing the connection between the programmable DC power controller and the LED light provided by this utility model.

[0032] Wherein: 1—Spectrometer; 2—Light response test arm; 3—Opaque cover; 4—Active chamber; 5—Support plate; 6—LED lamp mounting slot; 7—Infrared camera; 8—Programmable DC power controller; 9—LED lamp; 10—Aluminum substrate; 11—Light response channel arm segment; 12—Light response function arm segment; 13—Transparent mounting position; 14—Voltage adjustment knob; 15—Current adjustment knob; 16—Power switch; 17—Live wire; 18—Ground wire; 19—Neutral wire. Detailed Implementation

[0033] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore their detailed description will be omitted.

[0034] The terms “a,” “one,” “the,” and “the” are used to indicate the existence of one or more elements / components / etc.; the terms “including” and “having” are used to indicate an open-ended meaning of inclusion and that other elements / components / etc. may exist in addition to the listed elements / components / etc.

[0035] like Figure 1-4 As shown: A multi-channel detection device for screening wavelength light sources based on insect phototaxis and preference. The device includes a support plate 5 covered with a pure black light-absorbing fabric, the four sides of which hang down, making the support plate 5 opaque. Eight light-response testing arms 2, open at the near end and closed at the far end, are placed on the support plate 5. The open ends of the cuboid-shaped light-response testing arms 2 are tightly connected to form a closed chamber 4 on all four sides and bottom. The chamber 4 is covered with an opaque cover 3 made of pure black light-absorbing material. The L-shaped probe of spectrometer 1 is inserted downwards into the active chamber 4 through the opaque cover 3, and the probe can be rotated to align with the open end of any of the light response test arms 2. Seven of the light response test arms 2 are equipped with LED lights 9 at their closed ends. The LED lights 9 are connected to a programmable DC power controller 8 via wiring, and the programmable DC power controller 8 can control the LED lights 9. An infrared camera 7, capable of capturing images of the interior of the light response test arm 2, is positioned near the closed end of each light response test arm 2. The infrared camera 7 is connected to a video recorder via a network cable. Using an eight-channel detection device to test insects' preference for different wavelengths of light at the same intensity can be used to observe the phototaxis behavior of insects towards specific wavelengths under various light conditions.

[0036] The light response test arm 2 is composed of at least one light response channel arm segment 11 and one light response functional arm segment 12. The light response channel arm segment 11 is a four-sided frame structure with open ends and opaque walls on all four sides. The light response functional arm segment 12 is a five-sided frame structure with an open near end, a closed far end, three opaque walls, and a completely or partially transparent bottom wall. The far end opening of one or more interconnected light response channel arm segments 11 can be sealed and light-proofly connected to the near end opening of the light response functional arm segment 12. Pure black light-absorbing plates are installed on the four opaque inner walls of the light response channel arm segment 11. One side of the light response functional arm segment 12 has a partially transparent area for use as a transparent mounting position 13. The remaining part of this side and the other three sides are opaque and equipped with pure black light-absorbing plates on the inner walls. The closed end face, except for the area of ​​the LED lamp mounting groove 6, is also an opaque surface and equipped with pure black light-absorbing plates on the inner walls.

[0037] An LED lamp mounting slot 6 is provided on the closed end of the light response functional arm segment 12. The LED lamp mounting slot 6 is used to install an aluminum substrate 10 with LED lamps 9. The LED lamps 9 are connected to the programmable DC power controller 8 through a neutral wire 19 and a live wire 17. The programmable DC power controller 8 is provided with a voltage adjustment knob 14, a current adjustment knob 15, a power switch 16, a live wire 17, a ground wire 18, and a neutral wire 19.

[0038] In the light response test arm 2 of the multi-channel detection device, one light response test arm 2 without LED lamp 9 is used as a completely black light response test arm 2 to conduct a control experiment on the negative phototaxis of insects; the LED lamps 9 on the remaining 7 light response test arms 2 can provide light with different wavelengths but the same irradiance. Alternatively, one of these 7 light response test arms 2 can be selected to set the LED lamp 9 to the full spectrum as a control on the positive phototaxis of insects.

[0039] This utility model provides a multi-channel detection device for screening wavelengths of light source for insect phototaxis and preference. In use, eight light response test arms 2 are assembled on a support plate 5 covered with pure black light-absorbing fabric, along with an L-shaped probe of a spectrometer 1 and an opaque cover 3 made of pure black light-absorbing material, forming a fully enclosed and dark activity chamber 4. Seven programmable DC power controllers 8 are connected to LED lights 9 on the closed ends of the seven light response functional arm segments 12. Infrared cameras 7 are installed on the transparent mounting positions 13 of the eight light response test arms 2, and the infrared cameras 7 are connected to a video recorder via a network cable to store video data in a hard drive, which can then be viewed on a display screen. The programmable DC power controllers 8 and the video recorder are connected to a data storage viewer (such as a computer) as needed. One light response test arm 2 is not connected to the LED light 9 and is set to complete darkness for use as a control experiment for insect negative phototaxis. The seven LED lights 9 emit light of specific wavelengths that meet the experimental requirements.

[0040] Example 1

[0041] Taking the grass moth as an example, to facilitate the insect's normal activities, the light response test arm 2 has a three-section structure: two light response channel arm sections 11 and one light response functional arm section 12. The inner walls of each side of the light response channel arm section 11 are all equipped with pure black light-absorbing plates. The bottom surface of the light response functional arm section 12 is partially transparent for installing the infrared camera 7 for easy shooting, while the remaining surfaces are opaque and the inner walls are equipped with pure black light-absorbing plates. Turn on the power switch 16 and adjust the voltage adjustment knob 14 and current adjustment knob 15 of the seven programmable DC power controllers 8 one by one to adjust to the light intensity required for the experiment. Rotate the probe of the spectrometer 1 to face the LED 9 on a certain light response test arm 2. The spectrometer 1 can measure the spectral parameters and wavelength range of one LED 9 facing its probe each time. Taking an eight-channel detection device as an example, a total of seven measurements are required. During the detection process, the irradiance of each LED 9 needs to be kept consistent. One light response test arm 2 is not equipped with LED 9 and is kept completely black to be used as a control for the negative phototaxis experiment of insects. A certain number of grass moths used in the experiment were placed in the activity chamber 4, and an opaque cover 3 was placed over them to prevent the grass moths from escaping. At the same time, light was prevented from entering the activity chamber 4 and affecting the experiment. After 30 minutes, the insects were allowed to choose, and the number of grass moths in each light response test arm 2 was observed and recorded. The entire process of the experiment could be recorded by an infrared camera 7. The phototaxis behavior of the grass moths towards specific wavelengths under various light waves could be observed and recorded in detail by a video recorder and a data storage viewer. The results are shown in Table 1.

[0042] Wavelength (nm) 340 370 392 407 480 539 619 Comparison Activity Room total Select number of insects 0 29 9 20 1 0 0 4 25 88 percentage 0 0.33 0.10 0.23 0.01 0 0 0.05 0.28 1

[0043] Table 1. Screening of the preferred wavelengths for grassland moths using an eight-channel detection device.

[0044] Using an eight-channel detection device, the preference of grass moths for seven different wavelength light sources can be screened at one time, which improves the utilization rate of experimental resources and the amount of raw data obtained. By analyzing the proportion of grass moths entering different wavelength channels, it can be found that grass moths prefer light sources with a wavelength of 370nm, followed by light sources with a wavelength of 407nm.

[0045] Example 2

[0046] Taking the brown planthopper as an example, due to its smaller size, the light response test arm 2 has a two-section structure: a light response channel arm section 11 and a light response functional arm section 12. The inner walls of each side of the light response channel arm section 11 are all equipped with pure black light-absorbing plates. The bottom surface of the light response functional arm section 12 is partially transparent for mounting the infrared camera 7 for easy shooting, while the other sides are opaque and the inner walls are equipped with pure black light-absorbing plates. The remaining operation steps are the same as those for the grass moth. The results are shown in Table 2. After the experiment, the device can be disassembled for easy placement and storage.

[0047] Wavelength (nm) 340 370 392 407 480 539 619 Comparison Activity Room total Select number of insects 6 2 0 0 1 2 0 0 0 11 percentage 0.55 0.18 0 0 0.09 0.18 0 0 0 1

[0048] Table 2. Screening of brown planthopper preference wavelengths using an eight-channel detection device.

[0049] By analyzing the percentage of brown planthoppers entering different wavelength channels, it can be found that more than half of the tested planthoppers entered the 370nm wavelength channel, indicating that brown planthoppers prefer the 370nm light source.

[0050] When testing other insects, the number of segments or the length of the light response channel arm segment 11 in the light response test arm 2 can be changed again to facilitate the normal activity of the insects and reduce the impact on the experiment.

[0051] This invention's multi-channel detection device can screen out insects' preferences for multiple different wavelengths under the same light intensity. It is easy to operate, highly flexible, and can greatly reduce the time cost of experiments, making experiments more efficient.

[0052] In this embodiment of the invention, the term "multiple" refers to two or more, unless otherwise explicitly defined. The terms "install," "connect," and "fix" should be interpreted broadly. For example, "connect" can mean a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention based on the specific circumstances.

[0053] In the description of the embodiments of this utility model, it should be understood that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific direction or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0054] In this specification, the terms "an embodiment," "a preferred embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0055] The above embodiments are only for illustrating the technical concept of this utility model and should not be construed as limiting the scope of protection of this utility model. Any modifications made to the technical solution based on the technical concept proposed by this utility model shall fall within the scope of protection of this utility model. Technologies not covered by this utility model can be implemented by existing technologies.

Claims

1. A multi-channel detection device for screening insect phototaxis and preference wavelength light sources, characterized in that: The multi-channel detection device includes a support plate (5) and multiple light response test arms (2) placed on the support plate (5) with a near-end opening and a far-end closing. The included angle between adjacent light response test arms (2) is no greater than 90°, and the open end of the light response test arm (2) can form an active chamber (4) that is closed on all sides and at the bottom. The active chamber (4) is covered with an opaque cover (3), and the probe of the spectrometer (1) inserted downward from the opaque cover (3) into the active chamber (4) can be aligned with the channel of the light response test arm (2). Only one of the closed ends of the light response test arm (2) is not equipped with an LED lamp (9) as a light source. The LED lamp (9) is connected to a programmable DC power controller (8) through a circuit. Furthermore, the programmable DC power controller (8) can control the LED lamp (9); an infrared camera (7) capable of capturing images of the interior of the light response test arm (2) is arranged below the far end of the light response test arm (2); a pure black light-absorbing plate is installed on the opaque inner wall of the light response test arm (2); a transparent mounting position (13) is provided at the far end bottom of the light response test arm (2), which is used to install or place the infrared camera (7). The far end bottom of the light response test arm (2) where the transparent mounting position (13) is located is completely transparent and the rest of the light response test arm (2) is opaque, or the rest of the light response test arm (2) except for the transparent mounting position (13) is opaque.

2. The multi-channel detection device for screening insect phototaxis and preference wavelength light sources according to claim 1, characterized in that: The light response test arm (2) is composed of at least one light response channel arm segment (11) and one light response functional arm segment (12). The light response channel arm segment (11) is a four-sided frame structure with open ends and opaque walls. The light response functional arm segment (12) is a five-sided frame structure with open end, closed end, opaque walls, and fully or partially transparent bottom wall. The far end opening of one light response channel arm segment (11) or multiple interconnected light response channel arm segments (11) can be sealed and opaque to the near end opening of the light response functional arm segment (12).

3. The multi-channel detection device for screening insect phototaxis and preference wavelength light sources according to claim 2, characterized in that: The length of a single segment or the combined length of multiple segments of the light-response channel arm (11) is set according to the habits of the insect.

4. The multi-channel detection device for screening insect phototaxis and preference wavelength light sources according to claim 1, characterized in that: The support plate (5) is covered with pure black light-absorbing fabric; the opaque cover (3) is made of pure black light-absorbing material.

5. The multi-channel detection device for screening insect phototaxis and preference wavelength light sources according to claim 1, characterized in that: The closed end of the light response test arm (2) is provided with an LED lamp mounting slot (6), which is used to install an aluminum substrate (10) with an LED lamp (9). The LED lamp (9) is connected to the programmable DC power controller (8) through a neutral wire (19) and a live wire (17).

6. The multi-channel detection device for screening insect phototaxis and preference wavelength light sources according to claim 1, characterized in that: The programmable DC power controller (8) is equipped with a voltage adjustment knob (14), a current adjustment knob (15), a power switch (16), a live wire (17), a ground wire (18), and a neutral wire (19).

7. The multi-channel detection device for screening insect phototaxis and preference wavelength light sources according to claim 1, characterized in that: In the light response test arm (2) of the multi-channel detection device, there is a light response test arm (2) without a light source, which is used as a completely black light response test arm (2) to conduct a control experiment on the negative phototaxis of insects; the LED lamps (9) on the other light response test arms (2) with light sources can provide light with different wavelengths and consistent irradiance.

8. The multi-channel detection device for screening insect phototaxis and preference wavelength light sources according to claim 1, characterized in that: The infrared camera (7) is connected to the video recorder via a network cable; the probe of the spectrometer (1) is L-shaped.

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