Active Floor

The Active Floor is a square grid of conventional carpet tiles, supported at the corners by cylindrical load cells which are instrumented to give us the total vertical force. We currently have an array of 10 sensors mounted in two rows of five sensors in the main corridor of the DTG. The sensors are mounted unobtrusively below the suspended floor.

Publications

Previous instances of the Active Floor have formed the basis for the following publications:

M.D. Addlesee, A.H. Jones, F. Livesey and F.S. Samaria, "The ORL Active Floor", in IEEE Personal Communications 1997 Volume 4(5) pp.35--51

Robert Headon and Rupert Curwen, "Recognising Movements from the Ground Reaction Force", in Workshop on Perceptual User Interfaces 2001

Calibration Parameters

Current calibration parameters are:

Sensor	Offset
1	1472.13
2	1747.38
3	1710.98
4	1395.68
5	1266.31
6	N/C
7	1814.90
8	1416.97
9	1460.74
10	895.07
11	1011.51
12	N/C

Connection Information

The current installation is connected to the DTG ethernet. Try

telnet 128.232.23.100 14001

or

nc 128.232.23.100 14001

Sample output:

111 1450 1706 1686 1364 1238 3532 1798 1390 1464 878 992 3524

112 1451 1705 1687 1363 1237 3532 1797 1393 1464 881 995 3528

113 1451 1706 1687 1363 1237 3533 1799 1389 1465 879 993 3523

114 1450 1705 1688 1363 1236 3533 1799 1393 1464 880 993 3525

115 1450 1707 1687 1362 1239 3532 1801 1395 1465 878 993 3525

116 1451 1706 1688 1363 1238 3532 1803 1395 1467 880 995 3525

117 1449 1705 1686 1362 1237 3532 1800 1391 1464 879 994 3525

118 1450 1706 1689 1362 1241 3533 1800 1391 1466 879 994 3526

Column 1	Sample number 0 to 255
Column n	Current reading from sensor n-1. Sensors 6 and 12 (columns 7 and 13) are currently not connected.