Note: Differential amplified high-resolution tilt angle measurement system

Zhao, Shijie; Li, Yan; Zhang, Enyao; Huang, Pengfei; Wei, Hongping

doi:10.1063/1.4894527

Cited by 7 publications

(5 citation statements)

References 16 publications

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“…As far as commercial MEMS accelerometers are concerned, the lowest dimensions of their packaging are 1.1 × 1.1 × 0.74 mm, the negligible magnitude of mechanical hysteresis was reported in [53], whereas the ultra-high accuracy of 2 (0.0006 • ) was obtained for a pair of inclinometers operating in a differential configuration [54].…”

Section: Discussionmentioning

confidence: 99%

Electric-Contact Tilt Sensors: A Review

Łuczak

Ekwińska

2021

Sensors

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A review of various kinds of solid tilts sensors, using a free mechanical member for generation of electric-contact (mostly a ball), is presented. Standard and original solutions are discussed. The latest patents are described. A classification of the existing solutions with respect to their sensing principle is proposed. Possible types of the electric/electronic circuits are discussed. Advantages of these sensors are emphasized: mainly optional operation without power supply, resistance to electrostatic discharges, and simplicity of signal processing. Technological details are briefly introduced, along with miniaturization prospects. Additionally, liquid tilt sensors are succinctly characterized. The most typical tilt sensing techniques are concisely compared.

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Section: Discussionmentioning

confidence: 99%

Electric-Contact Tilt Sensors: A Review

Łuczak

Ekwińska

2021

Sensors

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“…Even higher accuracies are reported while applying differential MEMS accelerometers [24]. More detailed information regarding application of MEMS accelerometers for tilt measurements (e.g.…”

Section: Discussionmentioning

confidence: 99%

Novel algorithm for tilt measurements using MEMS accelerometers

Łuczak

2018

MATEC Web Conf.

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A novel algorithm for determining pitch and roll under static or quasi-static conditions is presented. It is based on application of a triaxial micromachined accelerometer for the necessary measurements. In order to obtain a possibly high accuracy, a simple data fusion is applied. Depending on the nominal value of pitch/roll, appropriate mathematical formula is selected. Additionally, the algorithm makes it possible to check if the operating conditions are dynamic, as indications of accelerometers are then not reliable. Implementation of the algorithm makes it possible to determine pitch and roll with accuracy of ca. 0.2° over 360° or better.

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“…As shown in Figure 1 , based on the gravitational acceleration, g, a gravity component associated with the inclination angle α is generated on the sensitive axis of the accelerometer when the sensitive axis and g direction are non-vertical, and the inclination angle α can be calculated when the gravity component is measured [ 28 , 29 , 30 ]. What is especially illustrated is that only the inclination angle with respect to the direction of the plumb line can be measured, and horizontal rotation cannot be based on this principle.…”

Section: Measuring Principlementioning

confidence: 99%

Design and Testing of a Flexible Inclinometer Probe for Model Tests of Landslide Deep Displacement Measurement

Zhang

Tang

et al. 2018

Sensors

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The physical model test of landslides is important for studying landslide structural damage, and parameter measurement is key in this process. To meet the measurement requirements for deep displacement in landslide physical models, an automatic flexible inclinometer probe with good coupling and large deformation capacity was designed. The flexible inclinometer probe consists of several gravity acceleration sensing units that are protected and positioned by silicon encapsulation, all the units are connected to a 485-comunication bus. By sensing the two-axis tilt angle, the direction and magnitude of the displacement for a measurement unit can be calculated, then the overall displacement is accumulated according to all units, integrated from bottom to top in turn. In the conversion from angle to displacement, two spline interpolation methods are introduced to correct and resample the data; one is to interpolate the displacement after conversion, and the other is to interpolate the angle before conversion; compared with the result read from checkered paper, the latter is proved to have a better effect, with an additional condition that the displacement curve move up half the length of the unit. The flexible inclinometer is verified with respect to its principle and arrangement by a laboratory physical model test, and the test results are highly consistent with the actual deformation of the landslide model.

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Note: Differential amplified high-resolution tilt angle measurement system

Cited by 7 publications

References 16 publications

Electric-Contact Tilt Sensors: A Review

Electric-Contact Tilt Sensors: A Review

Novel algorithm for tilt measurements using MEMS accelerometers

Design and Testing of a Flexible Inclinometer Probe for Model Tests of Landslide Deep Displacement Measurement

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