Abstract:
A pneumatic tire monitoring system is disclosed which provides a pressure sensor/transponder unit for each pneumatic tire of a vehicle to monitor tire pressure. A coded signal transmitted from each transponder unit is received by a multi-purpose receiver which may provide information to the vehicle operator or to other vehicle systems and subsystems. Each transponder unit is characterized by ultra low power consumption to extend the useful battery life. The transponder units may be mounted within the vehicle tires, or externally mounted. Impedance matching circuitry allows the use of the wheel rims with the transmitting antenna so as to avoid doppler shift induced by the rotating antenna and frequency drift induced by capacitive coupling.
Abstract:
A remote identification system for containers or other objects. An electrically closed loop (2) is placed around a container or other object (1). A passive transponder (3) is placed within the vicinity of the electrically closed loop (2). An electronic interrogator (5) may then be positioned anywhere near the electrically closed loop (2) and would be capable of reading the transponder (3) regardless of the orientation of the transponder with respect to the interrogator.
Abstract:
Rubber patch (1) for mounting an active electronic component (10), comprising a base (2) with a substantially planar connecting face (3) intended to be secured to the inner surface of a tyre and an opposite bearing face able to act as a support for said active electronic component (10), characterized in that it comprises, arranged between said two faces (3, 4), a passive label (5) for identifying the corresponding tyre, the label being provided with a memory capable of storing unique identifying data for this tyre. The invention also provides a corresponding tyre monitoring system.
Abstract:
The embodiments described herein generally relate to an electronic communication module suitable for incorporating into a tire or tire retread, where the electronic communication module comprises a radio device having at least a portion of its outer surface surrounded by a rubber composition. Certain embodiments also relate to tires or tire retreads containing the electronic communication module. In addition, certain embodiments relate to methods for improving the readability of a radio device incorporated into a tire or tire retread.
Abstract:
A tire includes a plurality of tire components defining a plurality of layers. A radio frequency identification (RFID) tag is disposed between at least two of the plurality of layers. The RFID tag is in contact with each of the at least two layers and is configured to transmit a response signal in response to receiving a request signal. When no air is in a region surrounding the RFID tag, a first response signal is emitted from the tire at a first frequency and first power. However, when air is in the region surrounding the RFID tag, a second response signal is emitted from the tire at the first frequency and a second power different from the first power.
Abstract:
A smart tag assembly is designed for mounting on an object to be tracked. The smart tag assembly comprises a multiple layer RFID laminate adapted for electronically storing and processing data, and wireless communicating data when interrogated by an RFID reader. The laminate comprises an RFID inlay including a microchip and antenna formed with a substrate, and laminated between an outside label cover and backing. A low-profile tag carrier defines a recessed pocket designed for receiving and holding the RFID laminate.
Abstract:
The subject matter relates to methods for communicating with an RFID tag that is positioned out of the line-of-sight of a communications device. A passive reflector is provided corresponding to an antenna resonant at the operating frequency of the tag. The antemia may be supported by an insulative or conductive wand for manual placement within the line-of-sight of both the tag and a communications device wishing to communicate with the tag. The passive reflector receives signals from either or both the tag and communications device and retransmits the signals. In this manner signals are able to "turn a comer" to improve communications capabilities.
Abstract:
Disclosed is an apparatus and methodology for providing a semi-passive transponder system in a vehicle. A semi-passive module employing backscatter technology is provided with an internal energy source that provides operating energy for at least a portion of the modules operating circuitry to reduce the energy requirements of a corresponding interrogator device. The module may be associated with tires mounted on a vehicle such that bi-directional communications may be established between the module and a centrally located interrogator module on the vehicle. The internal energy source may correspond to a battery, a fuel cell, a rechargeable device, an energy harvesting device, or similar devices.