Patent ID: 7226239

Claim:
A device for deploying a sensor from a moving construction vehicle, the sensor being used to sense a property of a material mat having an upper surface, the deployment device comprising: a positioning mechanism connected with the vehicle and connectable with the sensor, the mechanism being configured to displace the sensor between first and second vertical positions with respect to the material mat as the vehicle displaces with respect to the mat, the first sensor position being spaced a substantial distance above the mat upper surface and the second sensor position being located one of proximal to the mat surface and on the mat surface, the sensor being able to sense the material property when disposed in the second position, the positioning mechanism being configured such that the sensor is disposeable generally stationary at the second position while the vehicle displaces relative to the second position; and an electric logic circuit configured to operate the positioning mechanism such that the mechanism controllably displaces the sensor to sequentially displace from the first position to the second position, to remain generally stationary and disposed at the second position for a period of time sufficient to take a measurement, and to then displace from the second position to the first position after lapse of the period of time.