Method and system for measurement of road profile
Patent 4741207 Issued on May 3, 1988. Estimated Expiration Date: 
December 29, 2006. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
December 29, 2006. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3266302 Apparatus and method for the analysis of a particle-laden gas Method and system for measurement of road profile Grade and cross fall reference device for highway survey vehicles Patent #: 4674327 InventorApplicationNo. 06/946932 filed on 12/29/1986US Classes:73/146, TIRE, TREAD OR ROADWAY33/521, Earth profile or road grade or shrub or tree trim guide73/178RNAVIGATIONExaminersPrimary: Woodiel, Donald O.Attorney, Agent or FirmInternational ClassG01B 21/20 (20060101)AbstractApparatus and method for use on a measurement vehicle to measure road surface profiles while correcting for surface slope (cross slope and/or grade). Transducers are mounted on the vehicle suspended mass for measuring distance to the road surface and acceleration normal to the road surface as the vehicle is propelled over the road surface. A third transducer is responsive to fixed increments of vehicle travel over the road surface. Surface profile is determined in the spatial domain over each successive incremental distance. Total acceleration of the vehicle in the direction of the slope is measured, from which acceleration due to vehicle motion is subtracted. Elevation is determined as a trigonometric function of slope, and corrections are implemented to the profile signals. | |
