FeaturedProducts
SwordfishUser.FeaturedProducts History
Hide minor edits - Show changes to output
Changed lines 6-7 from:
to:
Deleted line 14:
Added line 14:
%lfloat% http://www.sfcompiler.co.uk/wiki/uploads/StevenWright/RockwaveSeismometer/rockwave_seismometer_photo.JPG
Changed lines 11-15 from:
%newwin%[[http://www.telepostinc.com | website »]]
to:
%newwin%[[http://www.telepostinc.com | website »]]
!!Rockwave Seismometer
Rockwave have just have completed development of a seismometer designed for the ‘keen amateur’ and education communities. Mechanically, the instrument comprises a horizontal pendulum made of carbon fibre, with a heavy brass weight at one end, swinging on a pair of low-friction tungsten carbide roller bearings. As the ground moves in response to seismic waves, the mass remains stationary, and the relative displacement is measured with a differential capacitance sensor with a resolution of 1 nanometre. The electronics are based around a PIC18F252, clocked at 20MHz, and a 16bit DAC for beam feedback. The firmware is compiled in Swordfish, making extensive use of floating point maths and libraries. A unique additional feature is the ability to generate synthetic seismic waves for teaching purposes and this part of the code uses Swordfish trigonometric functions. Readings of ground displacement are sent to a PC via RS232 and plotted on the screen.
%newwin%[[http://www.rockwave.co.uk | website »]]
!!Rockwave Seismometer
Rockwave have just have completed development of a seismometer designed for the ‘keen amateur’ and education communities. Mechanically, the instrument comprises a horizontal pendulum made of carbon fibre, with a heavy brass weight at one end, swinging on a pair of low-friction tungsten carbide roller bearings. As the ground moves in response to seismic waves, the mass remains stationary, and the relative displacement is measured with a differential capacitance sensor with a resolution of 1 nanometre. The electronics are based around a PIC18F252, clocked at 20MHz, and a 16bit DAC for beam feedback. The firmware is compiled in Swordfish, making extensive use of floating point maths and libraries. A unique additional feature is the ability to generate synthetic seismic waves for teaching purposes and this part of the code uses Swordfish trigonometric functions. Readings of ground displacement are sent to a PC via RS232 and plotted on the screen.
%newwin%[[http://www.rockwave.co.uk | website »]]