Design and modeling of a novel microsensor to detect magnetic fields in two orthogonal directions

Acevedo-Mijangos, J.; Soler-Balcázar, C.; Vázquez-Leal, H.; Martínez-Castillo, J.; Herrera-May, Agustín L.

doi:10.1007/s00542-013-1795-y

Cited by 10 publications

(7 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…When the magnetic field is perpendicular to the direction of conductor current flow, the voltage output generated across it varies. The Hall sensor is based on the generation of voltage across the electrical conductor and has been integrated with the semiconductor system in the circuitry, which leads more reliable behavior in a magnetic field 98,121,122 . Different companies have variants of the same 98,118 which have been mentioned in the Table S4.…”

Section: Differences In Mri‐conditional and Non‐conditional Systemsmentioning

confidence: 99%

MRI in patients with cardiac implantable electronic devices: A comprehensive review

Deshpande

Kella

Padmanabhan

2021

Pacing Clinical Electrophis

View full text Add to dashboard Cite

Magnetic resonance imaging (MRI) has become a commonly used non‐ionizing radiation dependent imaging modality which has an excellent spatial resolution with the capability to provide physiological information. Cardiac implantable electronic devices (CIEDs) are used in modern cardiology with a frequency of 1:50 over 75 years of age and nearly one in three people in this population required MRI during their lifetime. Changes in the CIED structure, electronics, and algorithms paired with changes in the protocol design of MRI have created a relatively safe environment for performing MRI in patients with CIED. Despite their documentation in literature and a guideline document from a professional society, significant skepticism exists in doing MRI in patients with CIEDs. We intend to give an overview of interactions between MRI and CIEDs, including the evidence available in this regard and conclude with the suggestion of a protocol for safely carrying out an MRI in patients with CIEDs.

show abstract

Section: Differences In Mri‐conditional and Non‐conditional Systemsmentioning

confidence: 99%

MRI in patients with cardiac implantable electronic devices: A comprehensive review

Deshpande

Kella

Padmanabhan

2021

Pacing Clinical Electrophis

View full text Add to dashboard Cite

show abstract

“…For this case, we calculated D 1 = D 2 = 0. For each section of the resonator, the bending moment functions are obtained through equation (23).…”

Section: Declaration Of Conflicting Interestsmentioning

confidence: 99%

Design and fabrication of a microelectromechanical system resonator based on two orthogonal silicon beams with integrated mirror for monitoring in-plane magnetic field

Acevedo-Mijangos

Ramírez-Treviño

May-Arrioja

et al. 2019

Advances in Mechanical Engineering

View full text Add to dashboard Cite

We present a resonant magnetic field sensor based on microelectromechanical systems technology with optical detection. The sensor has single resonator composed of two orthogonal silicon beams (600 µm × 26 µm × 2 µm) with an integrated mirror (50 µm × 34 µm × 0.11 µm) and gold tracks (16 µm × 0.11 µm). The resonator is fabricated using silicon-on-insulator wafer in a simple bulk micromachining process. The sensor has easy performance that allows its oscillation in the first bending vibration mode through the Lorentz force for monitoring in-plane magnetic field. Analytical models are developed to predict first bending resonant frequency, quality factor, and displacements of the resonator. In addition, finite element method models are obtained to estimate the resonator performance. The results of the proposed analytical models agree well with those of the finite element method models. For alternating electrical current of 30 mA, the sensor has a theoretical linear response, a first bending resonant frequency of 43.8 kHz, a sensitivity of 46.1 µm T−1, and a power consumption close to 54 mW. The experimental resonant frequency of the sensor is 53 kHz. The proposed sensor could be used for monitoring in-plane magnetic field without a complex signal conditioning system.

show abstract

“…By measuring this variation in amplitude or frequency, the Lorentz force can be measured, which has a direct relation to the intensity of the magnetic field. This variation can be measured with piezoresistive or piezoelectric, [9][10][11][12][13][14][15][16] capacitive, 17,18 and optical [19][20][21] sensing techniques. Indeed, all of these sensors, measure the Lorentz force, which was exerted on the electric current but in the proposed sensor the Lorentz force due to high velocity of charged plate in the magnetic field is considered.…”

Section: Introductionmentioning

confidence: 99%

Attitude determination sensor for low Earth orbit satellite based on Lorentz force

Rezaei

Raissi

Mehne

et al. 2018

Proceedings of the Institution of Mechanical Engineers, Part G:

View full text Add to dashboard Cite

Spacecraft attitude determination is a crucial task in attitude control subsystems. It provides the necessary feedback to close the control loop. Several sensors such as star trackers, Sun sensors, and horizon sensors are used for this purpose. The development of other methods can help control engineer with newer options to design their systems. Here, an innovative sensor for determining the attitude of a spacecraft is presented. The proposed sensor measures the Lorentz force vector due to the interaction between the magnetic field of the Earth, and the high linear velocity of the spacecraft. This sensor is composed of three series of orthogonal variable capacitors. The capacitors are connected in parallel to increase the total capacitance. The capacitors have movable plates which actuated by alternating current with specific frequency. Due to very high speed of spacecraft relative to magnetic field of earth in low orbit, the Lorentz force is exerted on the charges of the capacitor plates. The plates have same velocity as the spacecraft does. The applied Lorentz force to the plates affects their motion so that the harmonic can be seen in the output. Measuring the amplitude of the mentioned harmonic results in measurement of a component of the Lorentz force in the direction of capacitors. Installing the three capacitors orthogonally can measure the three rectangular components of the Lorentz force. This vector will be in the body frame of the spacecraft. The two-plate and three-plate capacitor are the two different proposed mechanisms and their performance is compared. Once the Lorentz force is known as a vector in the body frame, it can be applied along with data from another sensor to determine the attitude of the spacecraft. Based on simulation results, achievable resolution is better than 3°, which can be improved by further research.

show abstract

Design and modeling of a novel microsensor to detect magnetic fields in two orthogonal directions

Cited by 10 publications

References 40 publications

MRI in patients with cardiac implantable electronic devices: A comprehensive review

MRI in patients with cardiac implantable electronic devices: A comprehensive review

Design and fabrication of a microelectromechanical system resonator based on two orthogonal silicon beams with integrated mirror for monitoring in-plane magnetic field

Attitude determination sensor for low Earth orbit satellite based on Lorentz force

Contact Info

Product

Resources

About