MMA7260QT
NXP
This document describes and implements a positioning algorithm using the MMA7260QT 3-Axis accelerometer
Application NoteNxp
Implementing Positioning Algorithms Using Accelerometers
Implement positioning algorithms using the NXP MMA7260QT 3-axis accelerometer and 9S08QG8 MCU through double integration for velocity and position tracking.
Overview
This application note describes the implementation of a positioning algorithm using the NXP MMA7260QT 3-axis accelerometer and the 9S08QG8 8-bit microcontroller. It explains the mathematical principles of double integration required to derive velocity and displacement from acceleration data. The document outlines essential software considerations, including calibration routines to offset gravity, digital low-pass filtering using moving averages to reduce noise, and the use of a trapezoidal approximation method to minimize sampling losses. Code examples are provided for calibration, filtering, and the integration process for motion-tracking applications.
Use Cases
- Personal navigation systems
- Car navigation and back-up GPS
- Anti-theft devices
- 3-D gaming controllers
- PC mice and map tracking
Topics
MMA7260QT
9S08QG8
accelerometer
positioning algorithm
double integration
inertial sensing
moving average filter
motion tracking
trapezoidal method
Referenced Parts
9S08QG8
NXP
and a 9S08QG8 low cost 8-bit microcontroller unit (MCU).
| MMA7260QT | NXP | This document describes and implements a positioning algorithm using the MMA7260QT 3-Axis accelerometer |
| 9S08QG8 | NXP | and a 9S08QG8 low cost 8-bit microcontroller unit (MCU). |