Topic
Inductive sensor
About: Inductive sensor is a research topic. Over the lifetime, 2282 publications have been published within this topic receiving 21984 citations.
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TL;DR: In this article , the authors used proximity sensors such as inductive, and capacitive sensors, and with the help of motors the machine can automatically segregate the papers, plastics, and metals into their correct bins.
Abstract: Improper disposal of waste is a rampant problem that contributes to pollution. The objective of the study is to create an automatic waste segregator bin to be used by the households utilizing proximity sensors. Papers, plastics, and metals are the common wastes at home. Using proximity sensors such as inductive, and capacitive sensors, and with the help of motors the machine can automatically segregate the papers, plastics, and metals into their correct bins. The researchers created the whole setup of the motors and sensors using wood, pipe, screws, and nails to be able to create a functional segregator machine. Proving its effectiveness, testing procedures were conducted in detecting and segregating papers, plastics, and metals, then each was tested based on its maximum weight capacity, the detection time, and lastly, the success rate of being able to detect different types of wastes were tested. The results showed that the segregator has a success rate to detect 100% of metals accurately, 100% of papers, and 100% of plastics. The segregator bin has a maximum weight of 0.6 kg and an average detection time of 1.73 seconds. Through the different testing procedures, the researchers found that it is feasible to create an automated segregator bin using proximity sensors which is also a smart recycling bin as it was able to accurately detect papers, plastics, and metals. Although the researchers were able to attain the desired results, future researchers are still recommended to modify, innovate, and improve the automated waste segregator bin.
13 Oct 2022
TL;DR: In this article , an inductive readout circuit and a conductive anchoring loop are used to measure the cross-sectional area (CSA) of an artery for the direct and continuous monitoring of cardiac output.
Abstract: This paper presents a novel method for the measure of the cross-sectional area (CSA) of an artery to be used for the direct and continuous (24/7) monitoring of cardiac output (CO). The method is based on the inductance change of an anchoring loop mounted on a miniaturized system implanted in a section of the pulmonary artery. The inductive sensor comprises an inductive readout circuit and a conductive anchoring loop, which changes its inductance according to the deformation of the artery and can be correlated to the diameter and CSA of the artery section. Direct and periodic measurement of the CSA can improve the accuracy of CO monitoring in heart failure patients. An oscillator-based inductive readout IC was realized in a 180-nm CMOS process and the anchoring loop was implemented by a nitinol wire. The readout IC achieves 0.42 nH inductance resolution in a range from 181 nH to 681 nH and draws 39.7 μA to 51.2 μA current from a 1.2 V supply. The correlation between the artery diameter and loop inductance is demonstrated and the sensor achieves 0.24 mm resolution in a diameter range from 20 mm to 30 mm, a factor of four higher than the lateral resolution of echocardiography.
01 Aug 2022
TL;DR: In this paper , a flexible approach for contactless position sensing is presented based on voltage measurements between a transmitter coil and an array of receiver coils, where the authors study the characteristics of such a system for linear position measurement.
Abstract: Inductive sensing offers a versatile approach for the realization of position sensors. Advantages of inductive sensing are its robustness with respect to environmental influences, such as dust, humidity, or pollution. The technique also allows the realization of contactless sensors, i.e. sensors without any connection elements. A flexible approach for contactless position sensing is based on voltage measurements between a transmitter coil and an array of receiver coils. E.g. the approach has also been presented for 3D tracking. In this work we study the characteristics of such a system for linear position measurement. The work is based on simulations and comparative measurements. Aspects for the modeling of the inductive coupling are addressed and verified by measurements. Based on this, the elements and exemplary results for an uncertainty quantification for different coil arrangements are presented. Finally a model based approach to assess different coil arrays by means of the Cramér–Rao lower bound (CRLB) is presented.
TL;DR: In this article , a three-coil microfluidic lubricating oil detection sensor is designed by combining microfluidity principle with three-cil inductive detection method, which adopts a microchannel design to reduce the position error, improve the detection accuracy, and reduce the occurrence of detection errors caused by multiple particles passing through at the same time.
Abstract: In this article, a three-coil microfluidic lubricating oil detection sensor is designed by combining microfluidic principle with three-coil inductive detection method. The sensor adopts a microchannel design to reduce the position error, improve the detection accuracy of a single particle, and reduce the occurrence of detection errors caused by multiple particles passing through at the same time. The inductive electric potential of the induction coil was obtained by a simulation analysis and experimental verification methods. It is found that the influence of particles on the internal magnetic field of the micro coil is relatively enhanced when the micro coil is used as excitation and induction coil. This results in two peaks and valleys shown from the generated inductive electric potential, increasing of the signal’s characteristic point position, and improvement in signal recognition. Therefore, it will provide more information for the subsequent material identification and multiparticle mixing signal differentiation. Meanwhile, a signal processing circuit with the function of low-pass filtering and amplification is designed to suppress the noise value of the output signal to around 1.25 mV, which could improve the stability of the system. A series of lubricating oil abrasive particle detection tests are conducted, and the results show that the new detection sensor is able to detect iron particles below 64 $\mu \text{m}$ and copper particles below 125 $\mu \text{m}$ . The abrasive particle information collected by this sensor can provide more precise wear status information for the health assessment and fault diagnosis of mechanical systems, which is important for the health monitoring of mechanical systems.
Patent•
03 Nov 2009
TL;DR: In this paper, an electrical motor with screw-nut system was used to provide axial effort and control movement of a barking plate to support on a rotating part, which was transmitted to a control arm of a lever pivoting around a shaft.
Abstract: The device has an electrical motor fixed with a screw-nut system (4) to provide an axial effort and control movement of a barking plate to support on a rotating part. The axial effort of the system is transmitted to a control arm of a lever (12) pivoting around a shaft (14). The control arm is a deformable arm when torque is exerted by the control arm on the shaft. A displacement sensor i.e. inductive sensor (38), measures deformation of the control arm. A control unit acts on a power supply unit of the electrical motor when the measured deformation exceeds a predetermined value.