System for power control and memory access of hybrid RFID tags
First Claim
1. A radio-frequency identification system comprising:
- a hybrid tag, comprising(i) an active radio-frequency identification circuit,(ii) a passive radio-frequency identification circuit, and(iii) a memory;
an interrogator, operative to wirelessly communicate with the passive radio-frequency identification circuit; and
a scanner, operative to wirelessly communicate with the active radio-frequency identification circuit;
wherein the memory can be accessed by both the active radio-frequency identification circuit and the passive radio-frequency identification circuit.
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Abstract
A system for monitoring parameters associated with a device, such as current, voltage, power, temperature, energy consumed, moisture, fluid levels and flow, wind speed, identification parameters, and repair history. The system includes the use of hybrid RFID sensor tags including a combination of active, semi-passive, and passive RFID circuits. Hybrid tags are attached to electrical system components. Standalone electrical components and generators and those connected to the electrical grid may be monitored. Data collected and stored in the hybrid tags may be accessed via a wireless communication link between hybrid tags and either active scanners or a passive interrogators. The data collected and processed from the hybrid tags may be provided to a user via the Internet or another wired or wireless communication network.
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Citations
11 Claims
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1. A radio-frequency identification system comprising:
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a hybrid tag, comprising (i) an active radio-frequency identification circuit, (ii) a passive radio-frequency identification circuit, and (iii) a memory; an interrogator, operative to wirelessly communicate with the passive radio-frequency identification circuit; and a scanner, operative to wirelessly communicate with the active radio-frequency identification circuit; wherein the memory can be accessed by both the active radio-frequency identification circuit and the passive radio-frequency identification circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for storing and retrieving data, the method comprising:
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(i) powering a memory with a first power source that also powers an active radio-frequency identification circuit; (ii) storing data into the memory, wherein the data is stored into the memory by the active radio-frequency identification circuit; (iii) powering a passive radio-frequency identification circuit with a second power source; (iv) retrieving data from the memory, wherein the data is retrieved from the memory by the passive radio-frequency identification circuit. - View Dependent Claims (9, 10, 11)
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Specification