Measurement Sensor
First Claim
1. A measurement sensor comprising a radio frequency identification circuit for measuring a parameter, wherein the circuit comprises at least one variable component in which a characteristic of that component can be changed to reflect a change in a measured parameter, such that a frequency used by the sensor to communicate with a reader varies according to changes in the measured parameter.
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Accused Products
Abstract
This invention is directed to a measurement sensor comprising a radio frequency identification circuit for measuring a parameter. The circuit comprises at least of one component in which a characteristic of that component can be changed to reflect a change in a measured parameter, such that the frequency of the sensor varies according to changes in the measured parameter. The invention extends to a system for measuring a variable parameter that incorporates such a sensor.
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Citations
11 Claims
- 1. A measurement sensor comprising a radio frequency identification circuit for measuring a parameter, wherein the circuit comprises at least one variable component in which a characteristic of that component can be changed to reflect a change in a measured parameter, such that a frequency used by the sensor to communicate with a reader varies according to changes in the measured parameter.
Specification