Images Dated 13th December 2000

Magic sensor X-ray

Magic sensor. Coloured X-ray of a tyre fitted internally with an autonomous sensor (yellow). This long-lived sensor is powered solely by the changes in pressure it measures, needing no batte- ry. It is only active when there is a change to measure. Voltage is generated in its piezoelectric materials by changes in pressure. The voltage is converted into a radio signal, and this data is transmitted to an external receiver by an antenna. In this case, however, the sensor is linked by a wire. This sensor, which is being co-developed by Siemens, Germany, and Continental, will contin- uously check the tyre pressure while driving

© VOLKER STEGER/SIEMENS/SCIENCE PHOTO LIBRARY

ELF Karting Masters 2000: 1st Lewis Hamilton, 2nd Julien Melius, 3rd Julien Piquet

1st Lewis Hamilton (centre), 2nd Julien Melius (left), 3rd Julien Piquet (right).
ELF Karting Masters
Paris Bercy, France
9th - 10th December 2000

© SUTTON MOTORSPORT IMAGES