Title :
Spelunkers, how deep are you? [my favorite experiment]
Author_Institution :
Senior Mechatonics Eng., Washington, DC
fDate :
6/1/2008 12:00:00 AM
Abstract :
In this paper, by using differential measurements based around two SCP-1000 MEMS (microelectromechanical systems) sensors, a method of depth detection is proposed. A very-low-frequency (VLF) communications channel updates the moving sensor and provides corrections (along with an accelerometer, temperature, and humidity sensor for more precise measurements). For this, a single sensor, a SCP-1000 sensor made by VTI of Finland is used. These tiny chips, when used with the provided algorithms and internal temperature sensor, enable altitude measurements with resolutions better than1.5 Pa (-3.5 inches) across a dynamic range of 90 kPa (-34,750 feet).
Keywords :
accelerometers; height measurement; humidity sensors; microsensors; temperature sensors; Finland; SCP-1000 MEMS sensors; VTI; accelerometer; altitude detection; altitude measurement; differential measurements; humidity sensor; microelectromechanical systems; moving sensor; temperature sensor; very-low-frequency communication channel; Aircraft navigation; Atmosphere; Atmospheric measurements; Earth; Global Positioning System; Moon; Oceans; Sea measurements; Sea surface; Tides;
Journal_Title :
Instrumentation & Measurement Magazine, IEEE
DOI :
10.1109/MIM.2008.4534377
