Analysis and Adjustment of Positioning Error of PSD System for Mobile SOF-FTIR

Qu, Liguo; Liu, Jianguo; Deng, Yasong; Xu, Liang; Hu, Kai; Yang, Wu; Liu, Jin; Cheng, Xiaoli

doi:10.3390/s19235081

Cited by 6 publications

(3 citation statements)

References 11 publications

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“…Yang and Wu [4] used PSD for measuring a string vibration primarily due its fast response time. Qu et al [3] applied PSD-based position detection system for a closedloop control of a solar tracking mobile robot. There are also work done in literature to better characterize the performance of PSD based systems.…”

Section: Background and Related Workmentioning

confidence: 99%

“…Position sensitive detectors (PSDs) have become one of the most important components in the 2 or 3 degree-offreedom (DoF) position tracking system for various applications [1,2,3,4] (e.g., primarily based on lasers for measuring distance, displacement, and vibration), for which they provide high position resolution, fast response time, while being rather cost-effective and requiring simple signal conditioning circuits.…”

Section: Introductionmentioning

confidence: 99%

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A Wide-area, Low-latency, and Power-efficient 6-DoF Pose Tracking System for Rigid Objects

Kim¹,

Kapoor²,

Mansi³

et al. 2021

Preprint

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Position sensitive detectors (PSDs) offer possibility to track single active marker's two (or three) degrees of freedom (DoF) position with a high accuracy, while having a fast response time with high update frequency and low latency, all using a very simple signal processing circuit. However they are not particularly suitable for 6-DoF object pose tracking system due to lack of orientation measurement, limited tracking range, and sensitivity to environmental variation. We propose a novel 6-DoF pose tracking system for a rigid object tracking requiring a single active marker. The proposed system uses a stereo-based PSD pair and multiple Inertial Measurement Units (IMUs). This is done based on a practical approach to identify and control the power of Infrared-Light Emitting Diode (IR-LED) active markers, with an aim to increase the tracking work space and reduce the power consumption. Our proposed tracking system is validated with three different work space sizes and for static and dynamic positional accuracy using robotic arm manipulator with three different dynamic motion patterns. The results show that the static position root-mean-square (RMS) error is 0.6 mm. The dynamic position RMS error is 0.7-0.9 mm. The orientation RMS error is between 0.04 • and 0.9 • at varied dynamic motion. Overall, our proposed tracking system is capable of tracking a rigid object pose with sub-millimeter accuracy at the mid range of the work space and sub-degree accuracy for all work space under a lab setting.

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Section: Background and Related Workmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Wide-area, Low-latency, and Power-efficient 6-DoF Pose Tracking System for Rigid Objects

Kim¹,

Kapoor²,

Mansi³

et al. 2021

Preprint

View full text Add to dashboard Cite

show abstract

“…PSD has been widely used in micro/nano position measurements, vibration detection, tool alignment, aiming and guidance systems, and position detection by direct irradiation of a laser or another light source on the PSD surface [8]. Based on the application of PSD in the solar spectrum measurement system, Qu Liguo et al designed a PSD signal processing circuit and proposed a static voltage inference calibration method based on a genetic algorithm that can achieve a positioning accuracy of 0.01 mm when the light intensity is weak [9].…”

Section: Introductionmentioning

confidence: 99%

Vehicle-Mounted Solar Occultation Flux Fourier Transform Infrared Spectrometer and Its Remote Sensing Application

Deng

Sheng

et al. 2023

Sensors

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For the demand of rapid monitoring of pollution gas disorganized emissions in industrial parks, this paper studies the solar fast tracker system of vehicle-mounted SOF-FTIR (Solar Occultation Flux Fourier Transform Infrared Spectroscopy) system, where the spectrometer directly measures the broadband absorption spectrum of solar radiation light. A fast portable solar tracking system based on PSD (position sensitive detector) is designed, the mathematical model of solar spot position on the PSD surface source is established, and the optimal optical design parameters are simulated using the model. The dead-zone integral separation PID (Proportion Integration Differentiation) control algorithm is used to track the trajectory of the solar, and the light spot position model is used to nonlinearly compensate the output of PID control so that the PID controller has the same control precision and response speed in different error areas. Experimental analysis of the solar tracking performance of the vehicle-mounted SOF-FTIR under static and dynamic conditions, as well as the spectral effects on the measurements under static vehicle, constant speed, and turning driving conditions. The remote sensing application experiment of vehicle-mounted SOF-FTIR pollution gas emission flux was carried out in a tire factory in Hefei City, Anhui Province. A vehicle-mounted SOF-FTIR system realized the qualitative and quantitative analysis of the pollution gas at the boundary of the tire plant and calculated the flux of each component pollution gas. The emission flux of pollution gas was highly consistent with the actual pollution distribution of the tire plant. The results show that the positioning accuracy of PSD in the vehicle tracking experiment can also meet SOF-FTIR requirements for solar tracking. The remote sensing system will be useful in the field of atmospheric environment monitoring, and the mobile monitoring of regional pollutant gases based on solar infrared spectroscopy has application value.

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Needs and challenges of optical atmospheric monitoring on the background of carbon neutrality in China

Liu,

Xing

2024

Front. Environ. Sci. Eng.

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The achievement of the targets of coordinated control of PM2.5 and O3 and the carbon peaking and carbon neutrality depend on the development of pollution and greenhouse gas monitoring technologies. Optical monitoring technology, based on its technical characteristics of high scalability, high sensitivity and wide-targets detection, has obvious advantages in pollution/greenhouse gases monitoring and has become an important direction in the development of environmental monitoring technology. At present, a system of environmental optical monitoring technology with differential optical absorption spectroscopy (DOAS), cavity ring-down spectroscopy (CRDS), light detection and ranging (LIDAR), laser heterodyne spectroscopy (LHS), tunable diode laser absorption spectroscopy (TDLAS), fourier transform infrared spectroscopy (FTIR) and fluorescence assay by gas expansion (FAGE) as the main body has been established. However, with the promotion of “reduction of pollution and carbon emissions” strategy, there have been significant changes in the sources of pollution/greenhouse gases, emission components and emission concentrations, which have put forward new and higher requirements for the development of monitoring technologies. In the future, we should pay more attention to the development of new optical monitoring techniques and the construction of stereoscopic monitoring system, the interdisciplinarity (among mathematics, physics, chemistry and biology, etc.), and the monitoring of greenhouse gases and research on atmospheric chemistry.

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Analysis and Adjustment of Positioning Error of PSD System for Mobile SOF-FTIR

Cited by 6 publications

References 11 publications

A Wide-area, Low-latency, and Power-efficient 6-DoF Pose Tracking System for Rigid Objects

A Wide-area, Low-latency, and Power-efficient 6-DoF Pose Tracking System for Rigid Objects

Vehicle-Mounted Solar Occultation Flux Fourier Transform Infrared Spectrometer and Its Remote Sensing Application

Needs and challenges of optical atmospheric monitoring on the background of carbon neutrality in China

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