Use of an ultrasonic sensor for plant height estimation in irrigated cotton

Bronson, K. F.; French, Andrew N.; Conley, Matthew M.; Barnes, Edward M.

doi:10.1002/agj2.20552

Cited by 15 publications

(8 citation statements)

References 22 publications

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“…This agrees with data in the literature where ultrasound measurements provide reliable plant height data in a range of crops, and in static or on-the-go modes [ 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 ].…”

Section: Discussionsupporting

confidence: 90%

“…Open hardware platforms are easy to realize and use; their low cost, coupled with the increasing amount of information sharing, supports the rapid development of new-generation, inexpensive, and very flexible scientific instrumentations [ 19 , 20 ]. Ultrasound-based high-throughput sensors or platforms have been proposed for use in different crops [ 21 , 22 , 23 , 24 , 25 , 26 , 27 ], mostly in the on-the-go mode.…”

Section: Introductionmentioning

confidence: 99%

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Monitoring Plant Height and Spatial Distribution of Biometrics with a Low-Cost Proximal Platform

Bitella,

Bochicchio,

Castronuovo

et al. 2024

Plants

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Measuring canopy height is important for phenotyping as it has been identified as the most relevant parameter for the fast determination of plant mass and carbon stock, as well as crop responses and their spatial variability. In this work, we develop a low-cost tool for measuring plant height proximally based on an ultrasound sensor for flexible use in static or on-the-go mode. The tool was lab-tested and field-tested on crop systems of different geometry and spacings: in a static setting on faba bean (Vicia faba L.) and in an on-the-go setting on chia (Salvia hispanica L.), alfalfa (Medicago sativa L.), and wheat (Triticum durum Desf.). Cross-correlation (CC) or a dynamic time-warping algorithm (DTW) was used to analyze and correct shifts between manual and sensor data in chia. Sensor data were able to reproduce with minor shifts in canopy profile and plant status indicators in the field when plant heights varied gradually in narrow-spaced chia (R2 = 0.98), faba bean (R2 = 0.96), and wheat (R2 = up to 0.99). Abrupt height changes resulted in systematic errors in height estimation, and short-scale variations were not well reproduced (e.g., R2 in widely spaced chia was 0.57 to 0.66 after shifting based on CC or DTW, respectively)). In alfalfa, ultrasound data were a better predictor than NDVI (Normalized Difference Vegetation Index) for Leaf Area Index and biomass (R2 from 0.81 to 0.84). Maps of ultrasound-determined height showed that clusters were useful for spatial management. The good performance of the tool both in a static setting and in the on-the-go setting provides flexibility for the determination of plant height and spatial variation of plant responses in different conditions from natural to managed systems.

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Section: Discussionsupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Monitoring Plant Height and Spatial Distribution of Biometrics with a Low-Cost Proximal Platform

Bitella,

Bochicchio,

Castronuovo

et al. 2024

Plants

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show abstract

“…of the crop ( Shibayama et al., 1985 ). Bronson suggested using the 75% ultrasound measured plant height data as it provides a more accurate estimate of cotton height than the mean or median ( Bronson et al., 2020 ). For the wheat growing period in this study, the percentile size used was determined as Table 6 , based on different densities of sounding height versus manual measurement data and a field ultrasound to ground distance of 0.94m.…”

Section: Resultsmentioning

confidence: 99%

Sprayer boom height measurement in wheat field using ultrasonic sensor: An exploratory study

Zhao¹,

Zhai²,

Wang³

et al. 2022

Front. Plant Sci.

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In order to explore the influencing factors and laws of ultrasonic sensor detecting wheat canopy height, designed an ultrasonic sensor detection height test platform with speed adjustable function. Taking step surface, bare soil and wheat canopy as the research objects, a canopy height calculation method based on K-mean clustering is proposed, and the response characteristics of ultrasonic detection to three media under different operating speeds are explored. Firstly, the step detection test results show that the average detection error of ultrasonic sensor is 1.35%. When the sensor detection distance is switched at the step, with the increase of detection distance, the actual offset at the step increases first and then tends to be stable, and the maximum offset is 10.4cm. The test results of bare soil slope show that the relative error between the detection distance and the manual measurement distance is 1.4% under quasi-static conditions. The leading or lagging of detection under moving conditions is affected by multiple factors such as terrain undulation, speed and detection range. The detection test results of wheat canopy showed that the detection distance was larger than the manual measurement distance, and the smaller the canopy density, the greater the detection error and error variance. When the moving speed is 0.3m/s-1.2m/s, the average detection deviation of the ultrasonic sensor for five kinds of wheat canopy density is 0.14m, and the maximum variance of the detection deviation is 0.07cm2. In this paper, the research on the response characteristics of ultrasonic to the detection of bare soil and sparse canopy in wheat field can provide technical support for the detection of crop canopy in the field.

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“…The data acquisition unit of the ranging sensor is in the form of ultrasonic and infrared ranging 12 . The ultrasonic ranging method has the advantages of good directionality and strong penetrating ability, but due to the noisy environment of the tower assembly construction site, which has a great impact on the measurement results, it is not considered to be used.…”

Section: Methodsmentioning

confidence: 99%

Development of a monitoring system for disassembled towers with internal suspension poles

Zhang

Tang

et al. 2022

Sci Rep

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The traditional construction monitoring methods of suspended pole-mounted decomposed towers are mostly manual monitoring. The monitoring personnel has multiple blind spots, and the possibility of misjudgment based on personal experience is relatively large. It is difficult to ensure the construction safety of the suspended pole decomposing tower. For this reason, combined with the current power Internet of Things technology, this paper develops an intelligent monitoring system for suspended pole-mounted decomposing towers. According to the construction technology and its safety requirements of inner suspension derrick for transmission tower erection in sections, this system is classified into intellisense layer, wireless transport layer and information integration layer. According to the physical characteristics of the seven major risk points of the inner suspension pole group tower, the intellisense layer developed corresponding sensing equipment to obtain risk information. In the wireless transport layer, the ZigBee and 4G communication technologies are selected to interconnect self-constituted LAN and 4G wide area networks, to complete on-site data interaction and long-distance transmission. In the information integration layer, the force of cable, the inclination and height of derrick, and the distance between derrick and tower are determined. The system has been verified by the 500 kV delivery project of Fujian Zhouning Pumped Storage Power Station. The average error of critical monitoring point data is 4.14%, and the average data transmission delays in the far and near fields of the system are 18 ms and 176 ms.

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Use of an ultrasonic sensor for plant height estimation in irrigated cotton

Cited by 15 publications

References 22 publications

Monitoring Plant Height and Spatial Distribution of Biometrics with a Low-Cost Proximal Platform

Monitoring Plant Height and Spatial Distribution of Biometrics with a Low-Cost Proximal Platform

Sprayer boom height measurement in wheat field using ultrasonic sensor: An exploratory study

Development of a monitoring system for disassembled towers with internal suspension poles

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