Patent ID: 9000923
Filing Date: 2015-04-07
Classification: B60C,G06K

Abstract:
1. A reader system for a wheel-based, electric field-actuated transponder device of the type having a transmitter for transmitting data from a vehicle to an external receiver, the reader system comprising: a support pad for operatively supporting and positioning the vehicle in at least one read location on an upper pad surface; at least one antenna device on the support pad located to operatively align with the vehicle wheel-mounted transponder device with the vehicle on the support pad in the one read location; at least one transmitter device and receiver device coupled to the antenna device for generating an upwardly directed electric field to actuate the transponder device and receive a responsive signal back from the transponder device; and wherein further comprising at least one secondary above-ground antenna device coupled to an electric field generating transmitter device and located to operatively subject the vehicle wheel-mounted transponder device to a secondary electric field with the vehicle in the one read location.