Electric-Contact Tilt Sensors: A Review

Łuczak, Sergiusz; Ekwińska, M.

doi:10.3390/s21041097

Cited by 18 publications

(9 citation statements)

References 49 publications

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“…The liquid pendulum inclination sensor is relatively fragile and easily damaged after being bumped, and it is also not suitable for the construction environment of the tower. The solid pendulum inclination sensor has a wide measurement range and good applicability in field engineering 13 .…”

Section: Methodsmentioning

confidence: 99%

Development of a monitoring system for disassembled towers with internal suspension poles

Zhang

Tang

et al. 2022

Sci Rep

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The traditional construction monitoring methods of suspended pole-mounted decomposed towers are mostly manual monitoring. The monitoring personnel has multiple blind spots, and the possibility of misjudgment based on personal experience is relatively large. It is difficult to ensure the construction safety of the suspended pole decomposing tower. For this reason, combined with the current power Internet of Things technology, this paper develops an intelligent monitoring system for suspended pole-mounted decomposing towers. According to the construction technology and its safety requirements of inner suspension derrick for transmission tower erection in sections, this system is classified into intellisense layer, wireless transport layer and information integration layer. According to the physical characteristics of the seven major risk points of the inner suspension pole group tower, the intellisense layer developed corresponding sensing equipment to obtain risk information. In the wireless transport layer, the ZigBee and 4G communication technologies are selected to interconnect self-constituted LAN and 4G wide area networks, to complete on-site data interaction and long-distance transmission. In the information integration layer, the force of cable, the inclination and height of derrick, and the distance between derrick and tower are determined. The system has been verified by the 500 kV delivery project of Fujian Zhouning Pumped Storage Power Station. The average error of critical monitoring point data is 4.14%, and the average data transmission delays in the far and near fields of the system are 18 ms and 176 ms.

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Section: Methodsmentioning

confidence: 99%

Development of a monitoring system for disassembled towers with internal suspension poles

Zhang

Tang

et al. 2022

Sci Rep

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“…Although the results of the present study show static response to inclination along a single direction, the possibility of the dynamic inclination along all directions can be analyzed by expanding the present results. Furthermore, the demonstrated style, which uses HF rubber in the present study, would help design a novel tilt sensor that is different from other proposed tilt sensors that do not mimic biological organs [ 43 ].…”

Section: Equilibrium Performancementioning

confidence: 99%

Morphological Fabrication of Equilibrium and Auditory Sensors through Electrolytic Polymerization on Hybrid Fluid Rubber (HF Rubber) for Smart Materials of Robotics

Shimada

2022

Sensors

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The development of auditory sensors and systems is essential in smart materials of robotics and is placed at the strategic category of mutual communication between humans and robots. We designed prototypes of the rubber-made equilibrium and auditory sensors, mimicking hair cells in the saccule and the cochlea at the vestibule of the human ear by utilizing our previously proposed technique of electrolytic polymerization on the hybrid fluid rubber (HF rubber). The fabricated artificial hair cells embedded with mimicked free nerve endings and Pacinian corpuscles, which are well-known receptors in the human skin and have already been elucidated effective in the previous study, have the intelligence of equilibrium and auditory sensing. Moreover, they have a voltage that is generated from built-in electricity caused by the ionized particles and molecules in the HF rubber due to piezoelectricity. We verified the equilibrium and auditory characteristics by measuring the changes in voltage with inclination, vibration over a wide frequency range, and sound waves. We elucidated experimentally that the intelligence has optimum morphological conditions. This work has the possibility of advancing the novel technology of state-of-the-art social robotics.

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“…MEMS accelerometers are currently widely used in many electronic and mechatronic devices for a number of purposes primarily related to the sensing of linear acceleration, but also vibration [1], mechanical shock (jounce) [2], and one-axis tilt, i.e., inclination [3], or two-axial tilt [4]. Mathematical processing of the accelerometer output signal enables the sensing of linear velocity or displacement [5], such as in the case of applying MEMS accelerometers for a wheel odometer designed to determine the kinematics of a car [6].…”

Section: Introductionmentioning

confidence: 99%

Tilt Sensor with Recalibration Feature Based on MEMS Accelerometer

Łuczak

Zams

Dąbrowski

et al. 2022

Sensors

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The main errors of MEMS accelerometers are misalignments of their sensitivity axes, thermal and long-term drifts, imprecise factory calibration, and aging phenomena. In order to reduce these errors, a two-axial tilt sensor comprising a triaxial MEMS accelerometer, an aligning unit, and solid cubic housing was built. By means of the aligning unit it was possible to align the orientation of the accelerometer sensitive axes with respect to the housing with an accuracy of 0.03°. Owing to the housing, the sensor could be easily and quickly recalibrated, and thus errors such as thermal and long-term drifts as well as effects of aging were eliminated. Moreover, errors due to local and temporal variations of the gravitational acceleration can be compensated for. Procedures for calibrating and aligning the accelerometer are described. Values of thermal and long-term drifts of the tested sensor, resulting in tilt errors of even 0.4°, are presented. Application of the sensor for monitoring elevated loads is discussed.

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Electric-Contact Tilt Sensors: A Review

Cited by 18 publications

References 49 publications

Development of a monitoring system for disassembled towers with internal suspension poles

Development of a monitoring system for disassembled towers with internal suspension poles

Morphological Fabrication of Equilibrium and Auditory Sensors through Electrolytic Polymerization on Hybrid Fluid Rubber (HF Rubber) for Smart Materials of Robotics

Tilt Sensor with Recalibration Feature Based on MEMS Accelerometer

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