Low-Power CMOS Integrated Hall Switch Sensor

Wei, Rongshan; Guo, Shizhong; Yang, Shanzhi

doi:10.1155/2017/5375619

Cited by 6 publications

(2 citation statements)

References 12 publications

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“…They have a wide detection range and are often used to detect strong magnetic fields. Although the performance of Hall sensors is not as good as magnetoresistive sensors in weak magnetic detection, they have been widely used as magnetic switches and magnetometers in various applications [ 79 , 80 ].…”

Section: Classification and Developmentmentioning

confidence: 99%

Recent Progress of Biomimetic Tactile Sensing Technology Based on Magnetic Sensors

Man

Chen

2022

Biosensors

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In the past two decades, biomimetic tactile sensing technology has been a hot spot in academia. It has prospective applications in many fields such as medical treatment, health monitoring, robot tactile feedback, and human–machine interaction. With the rapid development of magnetic sensors, biomimetic tactile sensing technology based on magnetic sensors (which are called magnetic tactile sensors below) has been widely studied in recent years. In order to clarify the development status and application characteristics of magnetic tactile sensors, this paper firstly reviews the magnetic tactile sensors from three aspects: the types of magnetic sensors, the sources of magnetic field, and the structures of sensitive bodies used in magnetic tactile sensors. Secondly, the development of magnetic tactile sensors in four applications of robot precision grasping, texture characterization, flow velocity measurement, and medical treatment is introduced in detail. Finally, this paper analyzes technical difficulties and proposes prospective research directions for magnetic tactile sensors.

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Section: Classification and Developmentmentioning

confidence: 99%

Recent Progress of Biomimetic Tactile Sensing Technology Based on Magnetic Sensors

Man

Chen

2022

Biosensors

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“…Other techniques to measure AC magnetic fields, such as current transformers, are often cost-prohibitive and sizeprohibitive for wide-scale implementation. There is a clear need for small, cost-effective AC magnetic field sensors [17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Hall-Effect Sensor Technique for No Induced Voltage in AC Magnetic Field Measurements Without Current Spinning

Lalwani¹,

Yalamarthy

Alpert

et al. 2022

IEEE Sensors J.

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Accurately sensing AC magnetic field signatures poses a series of challenges to commonly used Hall-effect sensors. In particular, induced voltage and lack of high-frequency spinning methods are bottlenecks in the measurement of AC magnetic fields. We describe a magnetic field measurement technique that can be implemented in two ways: 1) the current driving the Hall-effect sensor is oscillating at the same frequency as the magnetic field, and the signal is measured at the second harmonic of the magnetic field frequency, and 2) the frequency of the driving current is preset, and the measured frequency is the magnetic field frequency plus the frequency of the current. This method has potential advantages over traditional means of measuring AC magnetic fields used in power systems (e.g., motors, inverters), as it can reduce the components needed (subsequently reducing the overall cost and size) and is not frequency bandwidth limited by current spinning. The sensing technique produces no induced voltage and results in a low offset, thus preserving accuracy and precision in measurements. Experimentally, we have shown offset voltage values between 8 and 27 μT at frequencies ranging from 100 Hz to 1 kHz, validating the potential of this technique in both cases.

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