Design and experiments of weeding teleoperated robot spectral sensor for winter rape and weed identification
The objective of this research was to eliminate the influence of environmental stray light on the measured spectral reflectance in a spectral sensor system used on a weeding teleoperated robot for rape fields. The system mainly consists of a light source, signal acquisition, and data processing. In...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
SAGE Publishing
2018-05-01
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| Series: | Advances in Mechanical Engineering |
| Online Access: | https://doi.org/10.1177/1687814018776741 |
| _version_ | 1818997938539462656 |
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| author | Tao Tao Shu Wu Lin Li Jinyang Li Sheng Bao Xinhua Wei |
| author_facet | Tao Tao Shu Wu Lin Li Jinyang Li Sheng Bao Xinhua Wei |
| author_sort | Tao Tao |
| collection | DOAJ |
| description | The objective of this research was to eliminate the influence of environmental stray light on the measured spectral reflectance in a spectral sensor system used on a weeding teleoperated robot for rape fields. The system mainly consists of a light source, signal acquisition, and data processing. In this study, optical modulation technology and discrete Fourier transform method were used to carry out experiments based on four characteristic wavelengths. The results show that the experimental system can obtain a stable reflectivity value no matter whether the stray light changes slowly or dramatically in the field environment. Furthermore, the calibration equation of spectral reflectance was obtained by curve fitting based on a FieldSpec3 portable spectrometer. The determination coefficients are all close to 1, and the root-mean-square errors are small. Through verification experiments, the results show that the average measurement error is less than 5%. Hence, this proposed method would be very helpful in improving the accuracy and efficiency of the spectral reflectance measurement, which in turn provides a theoretical basis for weed identification during in-field weeding by teleoperated robots. |
| first_indexed | 2024-12-20T21:53:35Z |
| format | Article |
| id | doaj.art-c19287d39b8d4a5e9cd8f1b75f04d592 |
| institution | Directory Open Access Journal |
| issn | 1687-8140 |
| language | English |
| last_indexed | 2024-12-20T21:53:35Z |
| publishDate | 2018-05-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Advances in Mechanical Engineering |
| spelling | doaj.art-c19287d39b8d4a5e9cd8f1b75f04d5922022-12-21T19:25:30ZengSAGE PublishingAdvances in Mechanical Engineering1687-81402018-05-011010.1177/1687814018776741Design and experiments of weeding teleoperated robot spectral sensor for winter rape and weed identificationTao Tao0Shu Wu1Lin Li2Jinyang Li3Sheng Bao4Xinhua Wei5School of Electrical and Information Engineering, Yangzhou Polytechnic Institute, Yangzhou, ChinaKey Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education/School of Agricultural Equipment Engineering, Jiangsu University, Zhenjiang, ChinaKey Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education/School of Agricultural Equipment Engineering, Jiangsu University, Zhenjiang, ChinaKey Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education/School of Agricultural Equipment Engineering, Jiangsu University, Zhenjiang, ChinaKey Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education/School of Agricultural Equipment Engineering, Jiangsu University, Zhenjiang, ChinaKey Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education/School of Agricultural Equipment Engineering, Jiangsu University, Zhenjiang, ChinaThe objective of this research was to eliminate the influence of environmental stray light on the measured spectral reflectance in a spectral sensor system used on a weeding teleoperated robot for rape fields. The system mainly consists of a light source, signal acquisition, and data processing. In this study, optical modulation technology and discrete Fourier transform method were used to carry out experiments based on four characteristic wavelengths. The results show that the experimental system can obtain a stable reflectivity value no matter whether the stray light changes slowly or dramatically in the field environment. Furthermore, the calibration equation of spectral reflectance was obtained by curve fitting based on a FieldSpec3 portable spectrometer. The determination coefficients are all close to 1, and the root-mean-square errors are small. Through verification experiments, the results show that the average measurement error is less than 5%. Hence, this proposed method would be very helpful in improving the accuracy and efficiency of the spectral reflectance measurement, which in turn provides a theoretical basis for weed identification during in-field weeding by teleoperated robots.https://doi.org/10.1177/1687814018776741 |
| spellingShingle | Tao Tao Shu Wu Lin Li Jinyang Li Sheng Bao Xinhua Wei Design and experiments of weeding teleoperated robot spectral sensor for winter rape and weed identification Advances in Mechanical Engineering |
| title | Design and experiments of weeding teleoperated robot spectral sensor for winter rape and weed identification |
| title_full | Design and experiments of weeding teleoperated robot spectral sensor for winter rape and weed identification |
| title_fullStr | Design and experiments of weeding teleoperated robot spectral sensor for winter rape and weed identification |
| title_full_unstemmed | Design and experiments of weeding teleoperated robot spectral sensor for winter rape and weed identification |
| title_short | Design and experiments of weeding teleoperated robot spectral sensor for winter rape and weed identification |
| title_sort | design and experiments of weeding teleoperated robot spectral sensor for winter rape and weed identification |
| url | https://doi.org/10.1177/1687814018776741 |
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