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Method Article
냄새 소스 지역화하는 능력 벌레의 생존에 필요한 인공 냄새 추적에 적용될 것으로 기대된다. 곤충 제어 로봇은 실제 silkmoth에 의해 구동 로봇 플랫폼을 통해 곤충의 냄새 추적 능력을 평가하기 위해 우리가 할 수있다.
Robotic odor source localization has been a challenging area and one to which biological knowledge has been expected to contribute, as finding odor sources is an essential task for organism survival. Insects are well-studied organisms with regard to odor tracking, and their behavioral strategies have been applied to mobile robots for evaluation. This "bottom-up" approach is a fundamental way to develop biomimetic robots; however, the biological analyses and the modeling of behavioral mechanisms are still ongoing. Therefore, it is still unknown how such a biological system actually works as the controller of a robotic platform. To answer this question, we have developed an insect-controlled robot in which a male adult silkmoth (Bombyx mori) drives a robot car in response to odor stimuli; this can be regarded as a prototype of a future insect-mimetic robot. In the cockpit of the robot, a tethered silkmoth walked on an air-supported ball and an optical sensor measured the ball rotations. These rotations were translated into the movement of the two-wheeled robot. The advantage of this "hybrid" approach is that experimenters can manipulate any parameter of the robot, which enables the evaluation of the odor-tracking capability of insects and provides useful suggestions for robotic odor-tracking. Furthermore, these manipulations are non-invasive ways to alter the sensory-motor relationship of a pilot insect and will be a useful technique for understanding adaptive behaviors.
Autonomous robots capable of finding an odor source can be important for the safety and security of society. They can be used for the detection of disaster victims, of drugs or explosive materials at an airport, and of hazardous material spills or leaks in the environment. At present, we rely entirely on well-trained animals (e.g., dogs) for these tasks, and robotic odor source localization has been strongly expected to relieve the workload of these animals. Finding an odor source is a challenging task for robots because odorants are distributed intermittently in an atmosphere1; therefore, continuous sampling of the odor concentration gradient is not always possible. Thus, a search strategy using intermittent odor cues is necessary for the achievement of robotic odor source localization2-4.
Odor source localization is essential for organism survival and includes tasks such as finding food, mating partners, and sites for oviposition. To overcome the difficulty in tracking patchy distributed odorants, organisms have evolved various behavioral strategies consisting of two fundamental behaviors: moving upstream during odor reception and cross-stream during cessation of odor reception5,6. These reactive strategies have been well-documented in insects and further combined with other modalities, such as wind direction and vision5-8. The insect behavioral models have also been useful examples for robotics3,9-11, in which behavioral algorithms or neural circuit models are implemented into mobile robots for the evaluation of odor source localization abilities10,12-15. From biomimetic perspectives, this "bottom-up" approach is certainly a fundamental way to develop biomimetic robots. However, the bottom-up approach is not a shortcut to obtaining a useful search strategy, because biological analyses are still ongoing, and the modeling of the sensory-motor systems behind insect behaviors has not been completed. Therefore, it is still unknown how such a biological system actually works as a controller of a robotic platform.
In this article, we demonstrate the protocol of a straightforward "top-down" approach to develop an odor-tracking mobile robot controlled by a biological system16,17. The robot is controlled by a real insect and can be regarded as a prototype of future insect-mimetic robots. In the robot's cockpit, a tethered adult male silkmoth (Bombyx mori) walked on an air-supported ball in response to the female sex pheromone, which was delivered to each antenna through air suction tubes. The ball rotations caused by the walking of the onboard moth were measured by an optical sensor and were translated into the movement of the two-wheeled robot. The advantage of this "hybrid" approach is that experimenters can investigate how the insect sensory-motor system works on the robotic platform where a pilot insect is in a closed loop between the robot and a real odor circumstance. The manipulation of the robotic hardware alters the closed loop; therefore, the insect-controlled robot is a useful platform for both engineers and biologists. For engineering, the robot represents the first steps of applying a biological model to meet the requirements for robotic tasks. For biology, the robot is an experimental platform for studying sensory-motor control under a closed loop.
1. 실험 동물
2. Silkmoth을 테 더링
3. 곤충 제어 로봇
4. 냄새 자료 준비
참고 : 남성 B. 모리가 conspecific 여성 섹스 페로몬의 주요 요소에 민감한 (bombykol : (E, Z) -10,12가-hexadecadien -1- 올) 20입니다. bombykol와 실험 장비의 오염은 냄새 추적 행동을 이끌어와 나방의 응답에 영향을 미친다.
5. 냄새 소스 현지화 실험
곤충 제어 로봇의 6 조작
주 : 각 조작의 타이밍은 그림 9에 표시됩니다.
우리는 여기서 악취 소스의 성공적인 위치 파악에 필요한 제어 곤충 로봇의 기본 특성을 제시한다. 로봇과 silkmoths, 악취 전달 시스템의 효율성 및 정확성 양자 후각 시각적 입력의 의미의 비교 검사한다.
자유롭게 산책 나방과 곤충 제어 로봇 사이의 냄새 추적 행동의 비교는 그림 10A와 B에 표시됩니?...
silkmoth 의해 로봇의 성공적인 제어하는 가장 중요한 포인트는 방 공기지지 공 매끄럽게 걸어시키는하고 안정적 공의 회전을 측정. 따라서, silkmoth을 테 더링하고 적절한 위치에서 공을 설치하면이 프로토콜의 중요한 단계입니다. 첨부 파일 또는 공 나방의 부적절한 위치에 나방의 부적절한 유착은 정상 보행 동작을 교란 및 / 또는 볼의 회전을 측정하는 광 센서의 고장 원인이 거기에 자?...
The authors have nothing to disclose.
We thank Shigeru Matsuyama for providing purified bombykol. This work was supported by the Japan Society for the Promotion of Science KAKENHI (grant numbers 22700197 and 24650090) and the Human Frontier Science Program (HFSP).
Name | Company | Catalog Number | Comments |
Male adult silkmoth (Bombyx mori) | Rear from eggs, or purchase as pupae. | ||
Incubator | Panasonic | MIR-254 | Store pupae or adult silkmoths at a constant temperature, 238 L. |
Plastic box | Sunplatec | O-3 | Store pupae or adult silkmoths, 299 × 224 × 62 mm L × W × H. |
Copper wire | 2-mm diameter for the attachment. Any rigid bar can be used as an alternative for making the attachment to tether a silkmoth. | ||
Plastic sheet | Kokuyo | VF-1420N | Sold as overhead projector film with thickness of 0.1 mm. Use at the tip of the attachment. |
Forceps | As one | 5SA | Remove scales on the thorax. |
Adhesive | Konishi | G17 | Bond a silkmoth to the attachment. |
Insect-controlled robot | Custom | Bearing an air-supported treadmill, an optical sensor, custom-built AVR-based microcontroller boards, and two DC brushless motors. It is powered by 8 × AA and 3 × 006P batteries. | |
Microcontroller | Atmel | ATMEGA8 | A component of the insect-controlled robot. |
DC blower | Nidec | A34342-55 | A component of the insect-controlled robot for floating a ball in an air-supported treadmill. |
DC fan | Minebea | 1606KL-04W-B50 | A component of the insect-controlled robot for suctioning air containing an odor. |
Optical mouse sensor | Agilent technologies | HDNS-2000 | A component of the insect-controlled robot, obtained from an optical mouse (M-GUWSRSV, Elecom, Japan). |
Brushless motor | Maxon | EC-45 | A component of the insect-controlled robot for driving a wheel. |
White polystyrene ball | A component of the insect-controlled robot. Diameter 50 mm, mass approximately 2 g. | ||
Bombykol: (E,Z)-10,12-hexadecadien-1-ol | Shin-Etsu chemical | Custom synthesis. | |
n-hexane | Wako | 085-00416 | Solvent for bombykol. |
Wind tunnel | Custom | Pulling-air type, sized 1,800 × 900 × 300 mm L × W × H. | |
BioSignal program | Custom | A program to establish serial communication between the insect-controlled robot and a PC via Bluetooth. Used for sending commands to start/stop the robot or configuring its motor properties. | |
Camcorder | Sony | HDR-XR520V | Capture robot movements. |
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