Patent ID: 8142103
Filing Date: 2012-03-27
Classification: E01C

Abstract:
1. A system for sensing surface compaction effected by a compactor machine of the type having a vibrating compacting roller, and providing a sensor signal indicating sensed surface compaction to a control mounted on the compactor machine, comprising a sensor for sensing compaction and providing a signal indicating sensed surface compaction, said sensor being mounted on the compacting roller support of said compactor machine, a vibration-to-electric energy converter, mounted with said sensor on said compacting roller support and subjected to vibration which it converts to electric energy, said electric energy being supplied to said sensor, a transmitter, powered by the electric energy from said vibration-to-electric energy converter and responsive to said sensor, for wirelessly transmitting said sensor signal, and a receiver on said machine for receiving said sensor signal from said transmitter and providing said sensor signal to said control.