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Wearable Pedometer Using ATtiny85
Published in Anudeep Juluru, Shriram K. Vasudevan, T. S. Murugesh, fied!, 2023
Anudeep Juluru, Shriram K. Vasudevan, T. S. Murugesh
A gyroscope is a device used to measure or maintain the orientation and angular velocity of an object. Similar to accelerometers, gyroscopes also have a wide range of applications. They are used in smartphones, gyrocompasses, inertial navigation systems, stability assistance in autonomous vehicles and many more.
Nonlinear Torsional Micromechanical Gyroscope
Published in Jan Awrejcewicz, Roman Starosta, Grażyna Sypniewska-Kamińska, Asymptotic Multiple Scale Method in Time Domain, 2022
Jan Awrejcewicz, Roman Starosta, Grażyna Sypniewska-Kamińska
Gyroscopes are present in a broad range of engineering systems such as air vehicles, automobiles, and satellites to track their orientation and control their path. Besides the directional gyroscopes, there are varieties of gyroscopes (e.g., mechanical, optical and vibrating) that are being used to measure the angular velocity. The critical part of the conventional mechanical gyroscope is a wheel spinning at a high speed. Therefore, conventional gyroscopes, although accurate, are bulky and very expensive and they are applicable mainly in the navigation systems of large vehicles, such as ships, airplanes, space crafts, etc.
Gyroscope Sensor
Published in Hossam Fattah, LTE™ Cellular Narrowband Internet of Things (NB-IoT), 2021
A gyroscope is a device that measure or maintain rotational motion or angular velocity. The units of angular velocity are measured in degree per second (∘/s) or Revolution Per Second (RPS). Angular velocity is simply a measurement of speed of rotation. A 3-axis gyroscope can measure rotation around three axes: X, Y, and Z.
Electropolishing of thin-cruciform gimbal flexure of gyroscope fabricated by electrical discharge machining
Published in Materials and Manufacturing Processes, 2023
Abhinav Kumar, Ranajit Mahanti, Manas Das
Gyroscope finds its application in instruments such as automatic pilots on aircraft and ships, compasses, torpedoes for the steering mechanism, and satellite launch vehicles, ballistic missiles, and orbiting satellites as inertial guidance systems. It also acts as a sensor in determining the orientation, and the most critical part is the gimbal flexure. The shape of the gimbal flexure is cruciform with thin flexure members. The gimbal flexure is generally made of maraging steel 300, providing sufficient strength to the thin flexure during its operation. Maraging steel is martensitic steel which is very difficult to machine via a conventional machining process. It consists of iron-nickel alloys with low-carbon content. It provides a very high strength-to-toughness ratio and high ductility, which is suitable for use in industries such as aircraft, molds, and tools.[1]
Design and development of a smart blind walking stick using machine learning
Published in Journal of Medical Engineering & Technology, 2022
Vishal Vinod Hingorani, Debanik Mukherjee, Kritika Sharma, Geetha Mani, Monica Subashini M., Albert Alexander Stonier
The prototype works with an Arduino Uno as a microcontroller, and a 5-volt battery to source the power. The sensor used is an IMU (Inertial Measurement Unit) MPU6050, which consists of a three-axis gyroscope and a three-axis accelerometer placed orthogonally to each other. An accelerometer measures inertial acceleration and a gyroscope measures rotational position about to a specific coordinate system. Working in unison they can detect where an object is in space and how fast it moves into a particular angular position, by taking into consideration of roll, pitch, and yaw of the tilt, with reference to the cylindrical coordinate system. Two servo motors (SG90) of high precision is placed perpendicular to one another serve as the electromechanical components which gives positional feedback. They are rotated according to the readings given by the sensors, to produce the desirable calibration which is shown in Figure 5.
Quantifying cricket fast bowling volume, speed and perceived intensity zone using an Apple Watch and machine learning
Published in Journal of Sports Sciences, 2022
Joseph W. McGrath, Jonathon Neville, Tom Stewart, Hayley Clinning, Bernd Thomas, John Cronin
If BV and intensity can be recorded effortlessly with minimal equipment outlay, this may inform a player’s training decisions, reduce injury rates, and improve performance – particularly when recorded over a day, month, year, or multiple seasons. Researchers could also use this information to examine more precise relationships between bowling volume, intensity, and injury. A possible practical solution to measure bowling volume and intensity is to use an inertial measurement unit (IMU). An IMU usually consists of an accelerometer, gyroscope, and magnetometer. An accelerometer measures linear acceleration (measured in g-force), the gyroscope measures angular velocity (degrees per second), while the magnetometer measures the strength and direction of the local magnetic field. IMU’s have a low relative cost and are accessible to most of the world’s population through smart devices (i.e., smartphones and smartwatches) (McGrath et al., 2020). This is important as most of the cricketing population lives in developing nations.