PPT-Making a Capacitive Accelerometer

Author : lois-ondreau | Published Date : 2018-11-04

EE147247A Fall 2016 Week 2 Lecture 1 K Pister Outline Simple SOI process Etching Design rules Simple capacitive accelerometer Anchor spring mass capacitor Performance

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Making a Capacitive Accelerometer: Transcript

EE147247A Fall 2016 Week 2 Lecture 1 K Pister Outline Simple SOI process Etching Design rules Simple capacitive accelerometer Anchor spring mass capacitor Performance Spring constant mass frequency response. Accelerometer An accelerometer is a sensing element that measures acceleration acceleration is the rate of change of velocity with respect to time It is a ve ctor that has magnitude and direction Accelerometers measure in units of a is the accelera Sensors. Sensors. Hardware devices . that take measurements of the physical environment . Some examples. 3. -axis Accelerometer. 3. -axis Magnetic field sensor. Temperature . sensor. Proximity . sensor. Single Unit (about $4). Which way’s up?. http://www.youtube.com/watch?v=KZVgKu6v808#t=246. Basis of the Technology. Another view. Biomedical. Automotive. Guidance/Navigation. Structural Health Monitoring. Inertia Measurement . S. ystems. Gyroscopes & Accelerometers. Sensor fusion. I2C. MPU-6050. Code. IMUs. There are small devices indicating changing orientation in smart phones, video game remotes, quad-copters, etc. . MMA8452Q. Wiring. Steps . opkg. install i2c-tools. . opkg. install i2c-tools-dev. . i2cdump 1 0x1d. . opkg. install i2c-tools-dev. i2cdetect -r 1 (before connecting device). 6. . i2cdetect -r 1 (after connecting device). EE147/247A. Fall 2016. Week 2, Lecture 1. K. Pister. Outline. Simple SOI process. Etching. Design rules. Simple capacitive accelerometer. Anchor, spring, mass, capacitor. Performance. Spring constant, mass, frequency response. (log(. t), log. (. x)). U. se to show . scaling. .. U. nits???. Matlab: loglog(t, x). U. se to show large scales.. Slope. ???. Log-Log Plots. Matlab: semilogy(t, x) - . U. se to show large scales.. Journal Articles, technical reports, and patents. . Nov 11, 2009. Seismic Instrumentation Technology Symposium. B. John Merchant. Technical Staff. Sandia National Laboratories. Sandia is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Company,. . Nov 11, 2009. Seismic Instrumentation Technology Symposium. B. John Merchant. Technical Staff. Sandia National Laboratories. Sandia is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Company,. TIPL 4503 . TI Precision Labs – ADCs. Created . by Luis Chioye. Presented by . Cynthia Sosa. 1. 2. Agenda. . Reference . Performance . Specifications:. Initial Accuracy, Drift, Long Term . Drift, and Noise. Mitchell Kline. Igor . Izyumin. Prof. Bernhard . Boser. Prof. Seth Sanders. Why Wireless Power?. The . Powermat. “…I . started to wonder if the . magnet. on the iPhone case was safe in my pocket where I also keep my . 1. DIGIKEY DKSB1002A Evaluation Board. 3-axis accelerometer. Arduino Uno. microcontroller board. DISCLAIMER & USAGE. The content of this presentation is for informational purposes only and is intended for students attending Louisiana Tech University only. . Inertial Measurement Unit (IMU) Basics IMU (Inertial Measurement Unit) Accelerometer Gyroscope Magnetometer (Compass) Acceleration along 3 axes Rotation speed around 3 axes Direction of magnetic north Todd J Kaiser Mark G Allen Milli Sensor Systems Actuators Inc West Newton MA 02165 School of Electrical and Computer Engineering Georgia Institute of Technology Atlanta GA 30332-0250 ABSTRACT A silic

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