Patent ID: 7684026
Filing Date: 2010-03-23
Classification: G01B

Abstract:
1. A sensing head for use in a wheel alignment system, comprising: one or more functional modules, each of which is configured to perform a function usable in obtaining measurements for calculating wheel alignment parameters of a vehicle, wherein the functional modules include at least one of: a data processor configured to calculate the measurements based on data received from the one or more functional modules; wherein the one or more functional modules provide operation redundancy by utilizing at least one of: providing multiple sets of illumination devices in the illumination module, wherein at least one set is independent from another set and is configured to illuminate the target independently; providing multiple sets of illumination devices to the spatial relationship sensing module, wherein at least one set is independent from another set and is configured to independently generate a signal to the companion sensing head; and providing multiple processing units for implementing the data processor, wherein each processing unit is configured to independently perform the functions of the data processor.