Multi-Threshold Inertial Switch for Quantitative Acceleration Measurements

Xu, Qiu; Khan, Fahimullah; Younis, Mohammad I.

doi:10.1109/jsen.2021.3115020

Cited by 18 publications

(10 citation statements)

References 36 publications

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“…Solving Eqs. ( 1) and ( 2) yields [31]: The dynamic response of the switch is suppressed when the ratio t0/Tnat is smaller than 0.5 according to the shock-response spectrum (SRS) [25]. Here, t0 and Tnat represent the pulse width of the shock pulse and the natural period of the system, respectively.…”

Section: A Structure Design and Theoretical Analysismentioning

confidence: 99%

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Multi-Threshold Inertial Switch With Acceleration Direction Detection Capability

Wang

Younis

2023

IEEE Trans. Ind. Electron.

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Section: A Structure Design and Theoretical Analysismentioning

confidence: 99%

“…However, these designs can only detect the magnitude of acceleration in one or two directions. Xu et al [25] proposed a shock sensor that can detect the acceleration with a range from 800g to 2600g with three threshold levels in the ±x and ±y axes.…”

Section: Introductionmentioning

confidence: 99%

Multi-Threshold Inertial Switch With Acceleration Direction Detection Capability

Wang

Younis

2023

IEEE Trans. Ind. Electron.

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“…The threshold acceleration is increased from 10g to 100000g. Xu et al [58] reported a multi-threshold inertial switch capable of performing quantitative acceleration measurements. As shown in Fig.…”

Section: Thresholdmentioning

confidence: 99%

“…The different beam dimensions lead to different beam deflections when the acceleration is accelerated in a direction normal to the contact pad. The threshold acceleration is increased from 10 g to 100 000 g. Xu et al [68] reported a multi-threshold inertial switch capable of performing quantitative acceleration measurements. As shown in figure 29, the designed inertial switch with three threshold levels is mainly made up of the proof mass, movable electrodes (a group of three at each side), and stationary electrodes, which correspond to the first, second, and third threshold levels, respectively.…”

Section: Inertial Switches With Multiple Thresholdsmentioning

confidence: 99%

Micromachined threshold inertial switches: a review

Younis

2022

J. Micromech. Microeng.

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This paper presents a review of the recent advances on micromachined inertial switches/triggers. The review focuses on their advantages and disadvantages, sensitive directions, mechanisms of contact-enhancement, threshold accuracy, and the tunability of the acceleration threshold. Several applications of these sensors are highlighted including in healthcare, structural health monitoring, internet of things (IoT), and military. Recent contemporary research directions are also discussed, such as multi-directions/axis, multi-threshold sensors, and machine learning implementation. The article concludes with discussion on future development trends and performance improvements of inertial switches.

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“…As a passive sensor, the inertial switch is widely used in remote monitoring areas with limited power supply due to its standby power consumption being zero in the untriggered state [ 1 , 2 , 3 ]. As a “near zero power” sensor, it can also be used to monitor collisions that occur during the transport of particular goods [ 4 , 5 , 6 , 7 ]. Over the years, with the development of intelligent control systems, the inertial switch may be used as an intelligent inertial switch in a vibration system [ 8 ].…”

Section: Introductionmentioning

confidence: 99%

Design, Simulation, and Fabrication of a New Three-Axis Inertial Switch with a Triangular Movable Electrode Structure

Chen

Wang

et al. 2022

Micromachines

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A new three-axis inertial switch is proposed. The triangle-structured movable electrode is designed to improve the inertial switch’s dynamic response performance, especially the movable electrode’s dynamic stability performance. The static mechanical analysis indicated that the displacement of the movable electrode to the fixed electrode in the sensitive direction is the minimum when the acceleration is applied to this designed inertial switch. The dynamic simulation analysis showed that the threshold of the designed inertial is about 235 g. The threshold in the non-sensitive direction is about 240 g, 270 g, 300 g, and 350 g when the directions of applied acceleration deviate 15°, 30°, 45°, and 60° from the sensitive direction, respectively. These results indicated that the designed inertial could resist the impact in non-sensitive directions and improve the stability in sensitive directions. The prototype of the inertial switch was fabricated and tested successfully. The testing results indicate that the threshold of the fabricated inertial switch is about 219 g. The test results verify the dynamic stability performance of the designed inertial switch.

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Multi-Threshold Inertial Switch for Quantitative Acceleration Measurements

Cited by 18 publications

References 36 publications

Multi-Threshold Inertial Switch With Acceleration Direction Detection Capability

Multi-Threshold Inertial Switch With Acceleration Direction Detection Capability

Micromachined threshold inertial switches: a review

Design, Simulation, and Fabrication of a New Three-Axis Inertial Switch with a Triangular Movable Electrode Structure

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