The design of locater based on GPS and barometer
MA Jian-cang · Journal of Northwest University · 2012
Aim One portable locater is designed to combine the altitude and GPS,which is based on the design of altimeter using integrated sensor measuring atmospheric pressure.Its purpose is to meet the need of actual usage.Methods The barometer is used to calculate the altitude which in turn is combined with the longitude and latitude from the GPS to form a complete 3-D location.Results This locater is composed of six main parts,which is GPS,barometer,SCM,power management module,LCD display module and matrix keyboard.SCM is the main controller.GPS is to get the longitude and latitude information.Via temperature compensation,barometer gets the barometric pressure with high precision,which could be converted to altitude and in turn be displayed via LCD.The press key achieves the goal to input the data and switch over the display interfaces.The power management module supplys power to the whole system and has the function to be charged.Conclusion This locater has the characteristic of high precision,stability,low power consumption and portability.It can be used in geologic prospecting,car navigation or aloft working.