Integrated Hall-effect magnetic sensors

Popović, R.S.; Randjelović, Z.; Manić, D.

doi:10.1016/s0924-4247(01)00478-2

Cited by 154 publications

(61 citation statements)

References 5 publications

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“…In the absence of a magnetic field, due to defects in production technology, mechanical stress, and ambient temperature, when there is a source of excitation at the control end of the Hall element, there is a nonzero difference in potential at its output end (i.e., the offset voltage offset of the Hall element) [5][6][7]. Its Wheatstone bridge model is shown in Figure 2.…”

Section: Methods Of Suppressing the Offset Voltage Of The Hallmentioning

confidence: 99%

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Low-Power CMOS Integrated Hall Switch Sensor

Wei

Guo

Yang

2017

Active and Passive Electronic Components

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This paper presents an integrated Hall switch sensor based on SMIC 0.18 m CMOS technology. The system includes a front-end Hall element and a back-end signal processing circuit. By optimizing the structure of the Hall element and using the orthogonal coupling and spinning current technology, the offset voltage can be suppressed effectively. The simulation results showed that the Hall switch can eliminate offset voltage greater than 1 mV at 3.3 V supply voltage. Two modes of the Hall switch circuit, the awake mode and the sleep mode, were realized by using clock logic signals without compromising the performance of the Hall switch, thereby reducing power consumption. The test results showed that the operate point and the release point of the switch were within the range of 3-7 mT at 3.3 V supply voltage. Meanwhile, the current consumption is 7.89 A.

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Section: Methods Of Suppressing the Offset Voltage Of The Hallmentioning

confidence: 99%

“…Awake Control Module. Clock-controlled micropower technology was used to develop a low-power Hall switch sensor [13]. The clock logic circuit inside the sensor allowed it to sample in the external magnetic field every 45-60 ms.…”

Section: Signal Amplification Module As Shown Inmentioning

confidence: 99%

Low-Power CMOS Integrated Hall Switch Sensor

Wei

Guo

Yang

2017

Active and Passive Electronic Components

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“…HE sensors are applied as contact-less sensors for linear position, angular position, velocity, rotation, and current. 32 The bioreactor utilizes the concept of a bias magnet, whereby the HE sensors (Allegro Ò [A1360, A1361, and A1362] Programmable linear HE sensor ICs) are mounted on the actuating magnet (at a distance of 11 mm), and are fixed relative to the stepper motor. This enables the detection of the change in a magnetic field due to the motion of the upper chamber magnet as it moves toward the actuating (bias) magnet.…”

Section: Sensing Systemmentioning

confidence: 99%

The Design and Development of a High-Throughput Magneto-Mechanostimulation Device for Cartilage Tissue Engineering

BradyMariea

VazeReva

Amin

et al. 2014

Tissue Engineering Part C: Methods

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To recapitulate the in vivo environment and create neo-organoids that replace lost or damaged tissue requires the engineering of devices, which provide appropriate biophysical cues. To date, bioreactors for cartilage tissue engineering have focused primarily on biomechanical stimulation. There is a significant need for improved devices for articular cartilage tissue engineering capable of simultaneously applying multiple biophysical (electrokinetic and mechanical) stimuli. We have developed a novel high-throughput magnetomechanostimulation bioreactor, capable of applying static and time-varying magnetic fields, as well as multiple and independently adjustable mechanical loading regimens. The device consists of an array of 18 individual stations, each of which uses contactless magnetic actuation and has an integrated Hall Effect sensing system, enabling the real-time measurements of applied field, force, and construct thickness, and hence, the indirect measurement of construct mechanical properties. Validation tests showed precise measurements of thickness, within 14 mm of gold standard calliper measurements; further, applied force was measured to be within 0.04 N of desired force over a half hour dynamic loading, which was repeatable over a 3-week test period. Finally, construct material properties measured using the bioreactor were not significantly different ( p = 0.97) from those measured using a standard materials testing machine. We present a new method for articular cartilage-specific bioreactor design, integrating combinatorial magnetomechanostimulation, which is very attractive from functional and cost viewpoints.

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“…Demagnetizing field energy modelling is still of great importance for micromagnetism studies of magnetic sensors. The search coil demagnetizing field effect study has the advantage to be a pedagogic application and to give magnitude scales to the designer through the apparent permeability concept which is at the source of the magnetic amplification of a ferromagnetic core but which also a way to produce welcome magnetic amplification Popovic et al (2001). This last point remains a common denominator of many magnetic sensors.…”

Section: Ferromagnetic Corementioning

confidence: 99%

Induction Magnetometers Principle, Modeling and Ways of Improvement

Coillot¹,

Leroy²

2012

Magnetic Sensors - Principles and Applications

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International audienceThis book provides an introductory overview of the research done in recent years in the area of magnetic sensors. The topics presented in this book range from fundamental theories and properties of magnets and their sensing applications in areas such as biomedicine, microelectromechanical systems, nano-satellites and pedestrian tracking. Written for the readers who wished to obtain a basic understanding of the research area as well as to explore other potential areas of applications for magnetic sensors, this book presents exciting developments in the field in a highly readable manner

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Integrated Hall-effect magnetic sensors

Cited by 154 publications

References 5 publications

Low-Power CMOS Integrated Hall Switch Sensor

Low-Power CMOS Integrated Hall Switch Sensor

The Design and Development of a High-Throughput Magneto-Mechanostimulation Device for Cartilage Tissue Engineering

Induction Magnetometers Principle, Modeling and Ways of Improvement

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