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Research Article

DESIGN AND OPTIMIZATION OF BULK MICROMACHINED ACCELEROMETER FOR SPACE APPLICATIONS

The accelerometers used for Inertial Navigation in satellite launch vehicles demand excellent performance in terms of sensitivity, noise immunity, linearity, bias and scale factor stability over time and environmental changes. Detailed and in-depth design of the microstructure by computer simulation is required to ensure structural integrity and reliability of the microstructure. The microstructure of the accelerometer consists of a proof mass suspended from the mounting frame by beam springs

Thampi Paul, Jaspreet Singh, M. M. Nayak, K. Rajanna, M. Sasi Kumar

International Journal on Smart Sensing and Intelligent Systems , ISSUE 4, 1019–1030

Article

Design of Temperature Sensitive Structure for Micromechanical Silicon Resonant Accelerometer

A micromechanical silicon resonant accelerometer (MSRA) is a potential micro accelerometer with high accuracy. One of the most important factors affecting its performance is temperature. To research the effect of temperature on micromechanical silicon resonant accelerometer, this study based on the original micromechanical silicon resonant accelerometer, designs a chip-level temperature-sensitive structure which a pair of temperature resonators is arranged on both sides of the force resonator

Heng Li, Libin Huang, Qinqin Ran, Songli Wang

International Journal of Advanced Network, Monitoring and Controls , ISSUE 4, 56–60

Research Article

A Novel Fiber Bragg Grating Accelerometer Based on Fiber Vibrating Wire

A fiber Bragg grating (FBG) accelerometer based on fiber vibrating wire is presented. Finite element analysis has been done and experiments are carried out to demonstrate the performance of this FBG accelerometer. The seismic simulation experimental results indicate that the system has a good response to the 50–400 Hz vibration signal. What more, the accelerometer has a high sensitivity which can reach 108.6 pm/G at 100Hz. The linear responsivity and repeatability are also tested. The

Qi Jiang, Minghao Yu, Xin Zhou, Tengyun Guo, Jinxue Song

International Journal on Smart Sensing and Intelligent Systems , ISSUE 5, 1–5

Article

ORIENTATION OF A TRIAXIAL ACCELEROMETER USING A HOMOGENEOUS TRANSFORMATION MATRIX AND KALMAN FILTERS

The evolution in the development of manufacturing techniques of electronic components, including accelerometers, has allowed access to a new field of research and applications in consumer electronics. The aim of this work is to present a method for aligning triaxial accelerometers, finding the parameters of the rotation, the translation and the scale of the homogeneous transformation matrix. In principle, it is necessary to acquire six points to build the frame of reference of the accelerometer

J.-S. Botero V, W. Hernández, E. Fernández

International Journal on Smart Sensing and Intelligent Systems , ISSUE 4, 1631–1646

Research Article

DE-NOISING SIGNAL OF THE QUARTZ FLEXURAL ACCELEROMETER BY MULTIWAVELET SHRINKAGE

Methods of de-noising the output signal of the JSD-I/A quartz flexural accelerometer based on five types of multiwavelets are comparatively investigated in this paper. Firstly, the theory of multiwavelet transform and the generalized cross validation criterion are analyzed. Secondly, because the JSD-I/A quartz flexural accelerometer which is fixed in SCT-1 two-axis rotation platform by the appropriative clamp has a start-up procedure of 3 minutes, the output signal of the quartz flexural

Zhao Chihang, Zhong Xin, Dang Qian, Zhao Liye

International Journal on Smart Sensing and Intelligent Systems , ISSUE 1, 191–209

Article

DESIGN AND FPGA IMPLEMENTATION OF NONLINEARITY COMPENSATION OF CAPACITIVE PICK-OFF MEMS ACCELEROMETER FOR SATELLITE LAUNCH VEHICLES

This paper presents the algorithm on the compensator design for eliminating the nonlinearity in the capacitive pick-off MEMS open-loop accelerometer and its implementation in the FPGA. A simple and elegant method is presented for the purpose. In the sensor model of compensator, upto 3rd order terms are taken. The first step approximation is derived using linear model. This approximation is improved over iterations to reduce the non-linearity. With this method, the inertial navigational grade

Thampi Paul, S.Vijin Jenius, M. Sasi Kumar

International Journal on Smart Sensing and Intelligent Systems , ISSUE 2, 213–228

Article

L-SHAPED CANTILEVER PARALLEL - PLATE MEMS ACCELEROMETER DESIGN PARAMETERS USING A GRAVITATIONAL SEARCH ALGORITHM

Due to their small size, low weight, low cost and low energy consumption, MEMS (Micro Electro-Mechanical Systems) accelerometers have achieved great commercial success in recent decades. The objective of this paper is to find the optimum design for a typical MEMS accelerometer, which satisfies a set of given constraints. Due to the complex nature of the problem, a gravitational search algorithm (GSA) is developed for optimization. The GSA attempts to optimize the inter-plate gap while

Souad Oukil, Abdelmadjid Boudjemai, Nabil Boughanmi

International Journal on Smart Sensing and Intelligent Systems , ISSUE 1, 65–89

Research Article

A Wireless Wearable Human Jump Analysis System

In most sports, the vertical jump is one of the most basic actions. Jumping force and explosive power are two specific indicators to reflect the ability of the muscles in one vertical jump. This paper presents a light-weight and easy-to-use wireless system to analyze the process of human vertical jumping up through the use of a Micro Electro Mechanical System (MEMS) accelerometer and a MEMS gyroscope. The system allows the users to be able to measure the jump parameters, including jumping force

Penghai Wang, Haiyang Quan, Lidong Lan

International Journal on Smart Sensing and Intelligent Systems , ISSUE 5, 1–5

Research Article

A Sensor-Based Forage Monitoring of Grazing Cattle in Dairy Farming

Arduino uno, Accelerometer sensor, Wi-Fi module, and a battery for power supply. This helps the cattle owners to monitor the cattle condition at remote distance via wireless communication. The device was placed on 30 cows and 65 real-time datasets were recorded in which 30 datasets indicated bite event, 26 datasets indicated chew event and 14 datasets indicated chew–bite event and it was verified.

J. Suganthi Jemila, S. Suja Priyadharsini

International Journal on Smart Sensing and Intelligent Systems , ISSUE 1, 1–9

Research Article

A Novel Approach To Improve Vehicle Speed Estimation Using Smartphone’s INS/GPS Sensors

paper, we investigate the noise performance of accelerometers, available in a few smartphones. Then, we apply the noise analysis for the purpose of estimating the moving vehicle speed. A number of experiments were carried out to capture the vehicle’s position & speed from OBD2, GPS as well as 3-axes accelerometer. We demonstrate a method by which the phone’s orientation is compensated for while calculating speed from the measured acceleration. Further, a new method of INS/GPS fusion

Arijit Chowdhury, Tapas Chakravarty, P. Balamuralidhar

International Journal on Smart Sensing and Intelligent Systems , ISSUE 5, 1–6

Article

AUTOMATIC HUMAN DAILY ACTIVITY SEGMENTATION APPLYING SMART SENSING TECHNOLOGY

Human daily activity segmentation utilizing smartphone sensing technology is quite new challenge. In this paper, the segmentation method combining statistical model and time series analysis is designed and implemented. According to designed partition procedure, real measured accelerometer datasets of human daily activities are tested. The segmentation performance of sliding window autocorrelation and minimized contrast algorithms is analysed and compared. Experiments demonstrate the

Yin Ling

International Journal on Smart Sensing and Intelligent Systems , ISSUE 3, 1624–1640

Article

UNSUPERVISED GROUPING OF MOVING OBJECTS BASED ON AGGLOMERATIVE HIERARCHICAL CLUSTERING

Kaori Fujinami

International Journal on Smart Sensing and Intelligent Systems , ISSUE 4, 2276–2296

Article

FIELD PROGRAMMABLE GATE ARRAY BASED EMBEDDED SYSTEM FOR NON-INVASIVE ESTIMATION OF HEMOGLOBIN IN BLOOD USING PHOTOPLETHYSMOGRAPHY

proposed device is developed with monitoring of PPG waves at three wavelengths so as to compensate for the error due to absorption of near infrared radiation (NIR) by water in the blood. The device also has been developed to be robust enough to tolerate distortions in the waveform due to motion of the subject. In order to sense the motion of the subject a 3-axis accelerometer has been used and correction is suitably applied to the sensed waveform. As a result, it is possible to measure the

Chetan Sharma, Sachin Kumar, Anshul Bhargava, Shubhajit Roy Chowdhury

International Journal on Smart Sensing and Intelligent Systems , ISSUE 3, 1267–1282

Article

BRAKING EFFICIENCY DETERMINED USING AN ACCELEROMETER IN THE ASPECT OF TECHNICAL CONDITION OF SHOCK ABSORBER

Łukasz Konieczny, Rafał Burdzik, Jan Warczek, Robert Jaworski, Bogusław Śleziak

Transport Problems , ISSUE 2, 81–90

Research Article

Automated Mobility and Orientation System for Blind or Partially Sighted People

as a sighted people. The system is linked with a GSM-GPS module to pin-point the location of the blind person and to establish a two way communication path in a wireless fashion. Moreover, it provides the direction information as well as information to avoid obstacles based on ultrasonic sensors. A beeper, an accelerometer sensor and vibrator are also added to the system. The whole system is designed to be small, light and is used in conjunction with the white cane. The results have shown that

Abdel Ilah Nour Alshbatat

International Journal on Smart Sensing and Intelligent Systems , ISSUE 2, 568–582

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