Reader and method for wheel-based RFID devices

摘要

A drive over, reader system for a wheel-based, electric field-actuated transponder device includes a vehicle support pad surface; an antenna device on the support pad located to operatively align with a wheel-based transponder device of the vehicle with the vehicle positioned on the pad in a read location; a transmitter device and a 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. The upwardly directed electric field operatively engages the transponder device as the vehicle drives over the antenna device. Multiple antennae may be aligned in a linear array to subject the transponder device to multiple electric fields as the vehicle traverses the support pad. The antenna device of the reader system may be configured as a layered panel positioned on the support pad or as a dipole antenna embedded within the support pad.

主权项

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.