1/3/2024 0 Comments Angular motion![]() ![]() A qualified comparison of this parameter for MET sensors with other types of angular vibration sensors is given in. This value influences the accuracy of measurements, especially the ability to resolve tiny signals. One of the most significant technical parameters of all kinds of vibration sensors is their self-noise level. Besides, molecular electronic angular motion sensors represent an alternative to less accurate, less sensitive and noisier MEMS-based sensors in such application areas as home and in-car electronics, railway and air transport, unmanned aircraft systems, exo-skeletons, medical equipment, etc. MET angular motion sensors could potentially be used in personal navigation systems, in the steering systems of space craft, submersible craft and robots, as well as in monitoring systems for complex engineering structures. The advantage of modern molecular electronic angular motion sensors is their combination of high quality characteristics, especially a low level of self-noise, combined with low manufacturing cost, reliability and small size. The molecular-electronic transfer (MET) technology is considered as one of the most prominent technologies for these areas. ![]() This has already resulted in a variety of new methods for multicomponent seismic observations where three components of ambience linear motion and three angular parts are registered simultaneously. The main application areas are seismology and seismic exploration, where angular motion sensors based on a number of operating principles are being actively introduced. There is a wide range of potential demand for compact, economical, low-noise sensors capable to measuring tiny vibrations of the objects to which the sensors are fixed. The presented results allow a deeper understanding of the molecular electronic sensor noise nature to suggest the ways to reduce it. In the high frequency range of 100–200 Hz, the noise is conditioned by the voltage noise of the electronics module input stage operational amplifiers and is heavily reliant to the sensor electrical impedance. At the frequency range of 2–100 Hz, the noise power spectral density has a specific inversely proportional dependence of the power spectral density on the frequency that could be attributed to convective processes. According to the model, self-noise is conditioned by thermal hydrodynamic fluctuations of the operating fluid flow in the frequency range of 0.01–2 Hz. ![]() Based on the experimental data, a theoretical model is developed. The present work reports the results of an experimental study of the self-noise level of such sensors in the frequency range of 0.01–200 Hz. However, until the present there has not been a model describing the sensor noise in the complete operating frequency range. Self-noise is one of the key characteristics which determine applications for MET sensors. Modern molecular electronic transfer (MET) angular motion sensors combine high technical characteristics with low cost. ![]()
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