Title :
Evaluation of a low cost solid-state accelerometer as a distance measuring sensor for vehicle positioning system
Author :
Liu, Hugh ; Pang, Grantham
Author_Institution :
Dept. of Electr. & Electron. Eng., Hong Kong Univ., Hong Kong
fDate :
6/21/1905 12:00:00 AM
Abstract :
Describes an evaluation of a low cost, solid state accelerometer as a distance-measuring device. A Kalman filter was applied to reduce random noise existing in the sensor. The random bias drift of the accelerometer was found to be 2.5 mg. The accelerometer was moved back and forth eight times for a distance of 40 cm with an acceleration of 10 m/s2 and the distance error accumulated was +1.55 cm. The bias drift rate due to temperature was 0.108 μg/s when the accelerometer was placed at room temperature. The performance shows that the device is suitable for short duration distance measurement and may act as a complementary sensor to the GPS during signal blockage or between periodical absolute position updates
Keywords :
Global Positioning System; Kalman filters; accelerometers; automated highways; distance measurement; position control; random noise; road vehicles; distance error; distance measuring sensor; low cost solid-state accelerometer; periodical absolute position updates; random bias drift; random noise; short duration distance measurement; signal blockage; vehicle positioning system; Acceleration; Accelerometers; Costs; Global Positioning System; Inertial navigation; Intelligent sensors; Sensor systems; Solid state circuits; Temperature sensors; Vehicles;
Conference_Titel :
Intelligent Transportation Systems, 1999. Proceedings. 1999 IEEE/IEEJ/JSAI International Conference on
Conference_Location :
Tokyo
Print_ISBN :
0-7803-4975-X
DOI :
10.1109/ITSC.1999.821097
