A Contactless Planar Inductive Sensor for Absolute Angular Displacement Measurement

Gao, Wenzheng; Shi, Huading; Tang, Qifu

doi:10.1109/access.2021.3131344

Cited by 19 publications

(6 citation statements)

References 18 publications

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“…To set exemplary influences (known values of angular deviation α), the authors developed a device to place the light source on the working surface of the coordinate-measuring machine. After committing the micro-movements of the beam [26], the angle was determined by the coordinate-measuring machine as a position of the precise cylinder based in a device rigidly connected to the laser transmitter.…”

Section: Software and Calibrationmentioning

confidence: 99%

Segmented Four-Element Photodiodes in a Three-Dimensional Laser Beam Angle Measurement

et al. 2023

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Based on the registration of two laser beam projections, a method for measuring the angular deviation of a laser beam from its initial position in three-dimensional space is proposed and experimentally demonstrated. The laser ray is directed into the beam-splitting cube, which distributes the ray into two mutually orthogonal parts, on the path of which, two four-segment photodiodes are located at different distances from the beam-splitting cube. The value of the angular deviation from a certain initial position of the laser beam in three-dimensional space is obtained after the mathematical processing of the measured position of the laser beam projections’ centers in the photodiodes coordinates systems. The innovation of this method is that the resulting angular deviation of the laser beam is in three-dimensional space due to the registration of a pair of projections. The experimental results also demonstrate that the proposed method has a high speed-measuring potential and can be used for solving a wide range of problems.

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Section: Software and Calibrationmentioning

confidence: 99%

Segmented Four-Element Photodiodes in a Three-Dimensional Laser Beam Angle Measurement

et al. 2023

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“…The oscillator of the sensor creates an electromagnetic field [62]. When a metallic object comes near to this field, an eddy current generates on the object's surface.…”

Section: ) Induction Sensormentioning

confidence: 99%

A Survey on IoT Driven Smart Parking Management System: Approaches, Limitations and Future Research Agenda

Alam,

Saha,

Bostami

et al. 2023

IEEE Access

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In developing countries around the globe, the number of vehicle users has exceeded the optimum threshold and is increasing rapidly due to speedy economic growth. Consequently, roads are getting more congested in the cities. This has resulted in increased difficulties in meeting the minimum parking demands. Moreover, most of the parking lots are at the underground level of buildings. Due to the lack of natural light sources, there is a need for a massive power source to light up a large quantity of lighting equipment continuously. This results in waste of energy, equipment losses and causes a tremendous financial burden on property management. However, an IoT driven parking management can significantly aid in the utilization of parking resources. Availability of a sensor based smart parking spot with its location information identified and transmitted using wireless communication technology can immensely benefit the vehicle owners as well as parking spot authorities. It is a comprehensive solution both for the user and the owner of the parking space. Besides, it can fulfill the lighting requirement of the parking lot with minimized energy. Some eminent features of such IoT based systems are online reservations, user authentication for ensuring security, parking guidance, online payment, and energy saving. This paper reviews IoT driven smart parking management systems. It gives insights into various approaches for the parking system, related technologies, widely used components, communication standards and concerned system security issues. Besides, the paper gives researchers a direction for future work as it directs towards some open issues in this area.

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“…Existing electromagnetic induction type angle sensors have a flat structure [ 22 , 23 , 24 , 25 ], which mainly has the following defects: relatively large sensor size due to the planar windings; and the two rotors in the sensor exhibit a crosstalk and affect the sensor non-linearity. These issues of planar induction sensors indicate the need to design a new induction angle sensor with a small size and a high linearity.…”

Section: Introductionmentioning

confidence: 99%

Design and Non-Linearity Optimization of a Vertical Brushless Electric Power Steering Angle Sensor

Chen,

Guo

2024

Sensors

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This paper presents the design and the non-linearity optimization of a new vertical non-contact angle sensor based on the electromagnetic induction principle. The proposed sensor consists of a stator part (with one solenoidal excitation coil and three sinusoidal receiver coils) and a rotor part (with six rectangular metal sheets). The receiver coil was designed based on the differential principle, which eliminates the effect of the excitation coil on the induced voltage of the receiver coil, and essentially decouples the excitation field from the eddy current field. Moreover, the induced voltages in the three receiver coils are three-phase sinusoidal signals with a phase difference of 10°, which are linearized by CLARK transformation. To minimize the sensor non-linearity, the Plackett–Burman technique was used, which identified the stator radius and the rotor blade thickness as the key factors affecting the sensor linearity. Then, the particle swarm algorithm with decreasing inertia weights was utilized to optimize the sensor linearity. A sensor prototype was made and tested in the laboratory, where the experimental results showed that the sensor non-linearity was only 0.648% and 0.645% in the clockwise and counterclockwise directions, respectively. Notably, the non-linearity of the sensor was less than −0.696% at different speeds.

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A Contactless Planar Inductive Sensor for Absolute Angular Displacement Measurement

Cited by 19 publications

References 18 publications

Segmented Four-Element Photodiodes in a Three-Dimensional Laser Beam Angle Measurement

Segmented Four-Element Photodiodes in a Three-Dimensional Laser Beam Angle Measurement

A Survey on IoT Driven Smart Parking Management System: Approaches, Limitations and Future Research Agenda

Design and Non-Linearity Optimization of a Vertical Brushless Electric Power Steering Angle Sensor

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