A rapid inspection method for ant nest areas on dams based on biological characteristics of termites

Abstract

The present invention relates to a method for quickly inspecting dam anthill areas based on termite biological characteristics, comprising: dividing the dam surface of an earth-rock dam into several areas; placing a bait station at the center of each area, and placing a container filled with bait on the bait station; wherein the bait station is a columnar structure; the bait is for termites to eat; after the bait is placed for T time, using a drone equipped with an infrared thermal imager to inspect along the dam surface, and obtaining thermal images of each bait station; according to the thermal images of each bait station, counting the bait area and the number of termites on the bait station, and confirming the bait station near the termite anthill according to the area and number statistics. The method of the present invention can quickly and efficiently detect anthill areas.

Description

Technical Field

[0001] The present invention relates to the relevant field of anthill detection in earth-rock dams, and in particular to a method for quickly inspecting anthill areas in dams based on biological characteristics of termites. Background Art

[0002] A thousand-mile embankment is breached by ant holes. The damage caused by termites on dams is hidden, repetitive and long-term, which can easily induce dam seepage, leakage, pitting, and even dam collapse and embankment collapse. If not prevented and controlled in time, it will cause major safety accidents such as dam collapse and embankment collapse. If prevented and controlled in time and properly, it can be prevented before it happens and the accident can be eliminated in the bud. Finding termites quickly and efficiently is a key step in termite control.

[0003] Common methods of finding termites are to look for traces of termite activity on the ground or to use instruments to detect termite nests. These methods are not only time-consuming and laborious, but also often miss the best time for termite control. For example, Chinese patent CN116931110A proposes to fix a high-definition camera and / or an infrared thermal imager and / or an infrared gas imager and / or a plant spectrometer on a drone, and use multiple devices to simultaneously scan the same area, screen abnormal areas, and determine the termite nest area. Because it uses a large number of equipment and instruments, the cost is high, and the vegetation on the dam surface will cover the biological characteristics of the termite nest, interfere with the inspection of the airborne equipment, and cause false termite nests. Summary of the invention

[0004] The purpose of the present invention is to overcome the problems existing in the above-mentioned prior art, and rely on the working characteristics of drones and infrared thermal imagers to provide a method for quickly inspecting dam ant nest areas based on the biological characteristics of termites.

[0005] In order to achieve the above technical objectives, the present invention adopts the following technical solutions:

[0006] A rapid inspection method for dam ant nest areas based on the biological characteristics of termites includes:

[0007] Divide the dam surface of the earth-rock dam into several areas;

[0008] A bait station is placed at the center of each area, and a container filled with bait is placed on the bait station; wherein the bait station is a columnar structure; and the bait is for termites to eat;

[0009] After the bait has been placed for T time, a drone equipped with an infrared thermal imager is used to patrol along the dam surface to obtain thermal images of each bait station;

[0010] According to the thermal images of each bait station, the bait area and the number of termites on the bait station are counted, and the bait stations near the termite nests are confirmed based on the area and number statistics.

[0011] As a preferred implementation, the dam surface is divided into a number of regions of equal area.

[0012] As a preferred embodiment, the bait station is a glass cylindrical structure. Glass has a large reflectivity and transmittance, and the infrared radiation it emits is significantly different from the bait, making the presence of termites in the bait station area more perceptible.

[0013] As a preferred embodiment, the bait station is a cylindrical structure with a diameter of 1.5-2.5m and a height of 0.05-0.15m.

[0014] As a preferred embodiment, the container is a disc structure, the top of the disc is closed by a top cover, and the outer diameter of the top cover is larger than the outer diameter of the disc; a plurality of micro holes are provided at the upper part of the disc and the outer edge of the top cover, which serve as the entry and exit passages for termites to eat. The outer edge of the top cover that exceeds the outer diameter of the disc is similar to the eaves structure, which can prevent the influence of natural environment such as rain and snow and the influence of natural enemies. The micro holes are the entry and exit passages for termites to eat, so the size of the micro holes should be sufficient to allow termites and the size of the food to pass through.

[0015] As a preferred embodiment, the container is made of plastic. The radiation of the disk is negligible. Since the foothold is mainly based on the difference in radiation between the bait station and the bait, the ability of the drone equipped with an infrared thermal imager to identify bait and termites is increased and is not affected by the radiation of the disk.

[0016] As a preferred embodiment, the container is a disc structure with a diameter of 0.4-0.6m and a height of 0.005-0.015m.

[0017] As a preferred implementation, when the drone is inspecting, the infrared thermal imager lens is kept parallel to the dam surface to reduce the impact of the slope.

[0018] As a preferred implementation, the statistical bait area and termite number are sorted in ascending order, and the bait station with the largest number of termites and the least remaining bait is selected to determine that the bait station is in the termite nest area. Since termite predation follows the "proximity principle", when the number of ant colonies appearing on the bait station is large and the bait area is reduced significantly, it means that there is an ant nest in the bait station area. In addition, the present application fully considers the two perspectives of termite transporting bait and staying to gnaw on it to select indicators to determine the termite nest area, so as to reduce the impact of feeding characteristics.

[0019] As a preferred embodiment, the infrared thermal imager is a super-resolution infrared thermal imager using IR-Perfclear super-resolution reconstruction technology. The process of termites swallowing and digesting cellulose will generate a certain amount of heat, and the volume of termites and bait stations is relatively small, and there is a small temperature difference between the two. The super-resolution infrared thermal imager using IR-Perfclear super-resolution reconstruction technology has a resolution of up to 2560×2048 and a thermal sensitivity of less than 25mk, which can capture observation targets with small volume and temperature difference.

[0020] As a preferred embodiment, the bait is sugar, preferably white sugar. According to the living habits of termites, termites generally use dried plants and active plants as their main food. Considering that termites can secrete more heat during the process of swallowing and digestion, prefabricated sugar is used as termite bait to lure termite colonies to eat.

[0021] As a preferred implementation, the bait stations are uniformly numbered and a satellite display map is generated. When termites invade the bait stations to feed on the bait, a drone equipped with an infrared thermal imager is used for monitoring.

[0022] As a preferred implementation, the visible light and infrared collected by the infrared thermal imager carried by the drone are automatically matched and fused in real time to improve the clarity of termite images and the observation efficiency.

[0023] As a preferred embodiment, the airborne infrared thermal imager has an embedded automation system, which can focus on and observe the changes in the ant station area in real time through the ContFocus intelligent continuous automatic focus mode; AI-Genius voice all-round assistant, voice remote control drone equipped with infrared thermal imager; with the help of PerIRVision panoramic stitching technology, an ultra-wide field of view of the entire dam surface ant hole distribution picture can be obtained. Monitor the number of ant colonies and changes in the bait area at the bait station. Furthermore, the global thermal image of the dam captured by the infrared thermal imager carried by the drone is used to compare and analyze the number of termites and changes in the bait area at each bait station.

[0024] Soil-dwelling termites on dams are mainly active in the underground soil of dams. They spend a short time on the surface and are blocked by surface vegetation, so it is difficult to fully detect whether the area is seriously infested. The present invention uses the biological characteristics of termites to achieve rapid inspections of ant nest areas on dams. It can improve the monitoring accuracy of ant nest areas while using a single device (infrared thermal imager), and effectively improve the efficiency of termite inspections on dam projects. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the structure of the device for inspecting ant nests on earth-rock dams based on a drone-mounted infrared thermal imager platform;

[0026] In the picture: 1. Drone; 2. Infrared thermal imager; 3. Downstream surface of the dam; 4. Disc; 5. Bait station; 6. Ground remote control station. DETAILED DESCRIPTION

[0027] The technical solution of the present invention is further described below through specific embodiments.

[0028] like Figure 1 As shown in the figure, based on the biological characteristics of termites, the use of a drone platform equipped with an infrared thermal imager to inspect the anthill area of ​​the earth-rock dam includes the following steps:

[0029] (1) Pre-made bait

[0030] According to the living habits of termites, termites generally use dried plants and active plants as their main food. Dried plants, such as Artemisia plants, contain cellulose, hemicellulose, lignin, etc.; live plants, such as rhizomes of seedlings, fresh corn stems, wheat, cotton, peanuts and other crops. However, considering that termites can secrete more heat during the process of swallowing and digestion, sugar is preferably used as termite bait. In this embodiment, white sugar is used.

[0031] (2) Planning of bait stations

[0032] Observe the downstream dam surface conditions of the earth-rock dam, measure the distance on the reservoir dam with a tape measure, divide the dam surface area equally, and determine the specific layout location. The downstream dam surface 3 is 100m long and 50m wide, and the dam surface is divided into 8 areas. Then place the bait station 5 at the center of the 8 areas, and number each bait station from left to right and from top to bottom. The bait station is a circular glass plate with a diameter of 2m and a height of 0.1m.

[0033] (3) Loading into the station

[0034] The bait sugar is placed in a plastic disc 4 with a diameter of 0.5m and a height of 0.01m. The top of the disc 4 is closed by a cover, and the outer diameter of the cover is larger than the outer diameter of the disc 4. Six equally spaced micro holes are provided at the upper part of the disc and the outer edge of the cover as the entry and exit channels for termites to eat. The discs 4 filled with bait are placed at the center of the bait stations 5 at 8 locations, waiting for termites to eat.

[0035] (4) Check the instrument

[0036] Ensure that the frame of UAV 1 is intact, the blades and arms are unfolded, and the infrared thermal imager 2 is firmly installed; review the power of the UAV and the remote control to ensure that both can fully meet the operating consumption; check the signal connection between the flight control system and the onboard control system to ensure that the infrared thermal imager can sample normally and the ground remote control station 6 can successfully receive the radiation information obtained by the infrared thermal imager 3; turn on the GPS signal to ensure that the flight position information is dynamically updated.

[0037] (5) Prepare for inspection

[0038] Estimate the drone's field of view, set the drone 1's flight altitude and inspection flight route. The dam is 10m high, and the drone 1's flight altitude is set to 15m. The field of view can be adjusted to divide the downstream dam surface into two rows; the first row inspects from the left shoulder to the right shoulder of the dam body, and the second row inspects from the right shoulder to the left shoulder of the dam body, completing the inspection of the entire dam body in two lines.

[0039] (6) Inspection flight

[0040] After the bait is placed in the bait station for one day, the drone 1 is controlled to take off from the left shoulder of the dam body and rise to the inspection height of 15m, so that the shooting field of view of the infrared thermal imager 2 can cover the first row of the downstream dam surface 3, and the downstream dam surface 3 is inspected from left to right. After the first row of inspection is completed, the second row of aerial inspection begins from right to left. During the inspection, the information of the infrared thermal imaging disk 4 and the bait station 5 is preprocessed, mainly including focusing (focusing on the container and the bait station) and zooming. And keep the lens of the drone's infrared thermal imager parallel to the dam surface.

[0041] (7) Comprehensive judgment

[0042] According to the transmission information of the infrared thermal imager 3 carried by the drone 2, the remaining bait of each bait station and the number of termites on the bait station can be intuitively displayed on the ground remote control station, and the bait area and the number of termites on each bait station are counted and sorted from small to large. If the number of termites on the bait station is the largest and the remaining bait is the least, it means that the bait station is in the termite nest area.

[0043] (8) Drone recovery

[0044] After the detection operation is completed, the operator will land the drone at a landing point in a safe area; back up the collected visible light and infrared thermal imaging information and fill in the flight record; turn off the power of the drone, infrared thermal imager, remote control console and other equipment in turn, and check the drone for component damage.

[0045] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of application of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A rapid inspection method for dam anthill areas based on termite biological characteristics, characterized in that: include: Divide the dam surface of the earth-rock dam into several areas; A bait station is placed at the center of each area, and a container filled with bait is placed on the bait station; wherein the bait station is a columnar structure; the bait is for termites to eat; the container is a plastic disc structure, the top of the disc is closed by a top cover, and the outer diameter of the top cover is larger than the outer diameter of the disc; a plurality of micro holes are provided at the upper part of the disc and the outer edge of the top cover as an entry and exit channel for termites to eat; After the bait has been placed for T time, a drone equipped with an infrared thermal imager is used to patrol along the dam surface to obtain thermal images of each bait station; According to the thermal images of each bait station, the bait area and the number of termites on the bait station are counted, and the bait stations near the termite nests are confirmed based on the area and number statistics.

2. The method according to claim 1, characterized in that: The dam surface is divided into a number of regions with equal areas.

3. The method according to claim 1, characterized in that: The bait station is a glass cylindrical structure.

4. The method according to claim 1, characterized in that: The bait station is a cylindrical structure with a diameter of 1.5-2.5m and a height of 0.05-0.15m.

5. The method according to claim 1, characterized in that The container is a disc structure with a diameter of 0.4-0.6m and a height of 0.005-0.015m.

6. The method according to claim 1, characterized in that When the drone is inspecting, the infrared thermal imager lens is kept parallel to the dam surface.

7. The method according to claim 1, characterized in that The statistical bait area and termite number are sorted in ascending order, and the bait station with the largest number of termites and the least remaining bait is selected to determine that the bait station is in the termite nest area.

8. The method according to claim 1, characterized in that The infrared thermal imager is a super-resolution infrared thermal imager using IR-Perfclear super-resolution reconstruction technology.

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