SYSTEMS AND METHODS FOR MEASURING ROTATIONAL SPEED AND POSITION OF A ROTATING DEVICE
First Claim
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1. A system comprising:
- a transceiver module that generates an electromagnetic (EM) field using an antenna; and
a rotating device that includes N transponders arranged such that each of the N transponders passes through the EM field during one revolution of the rotating device,wherein each of the N transponders damps the EM field when passing through the EM field, wherein the transceiver module determines a rotational speed of the rotating device based on a number of times the EM field is damped during a period, and wherein N is an integer greater than or equal to 1.
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Abstract
A system includes a transceiver module and a rotating device. The transceiver module generates an electromagnetic (EM) field using an antenna. The rotating device includes N transponders arranged such that each of the N transponders passes through the EM field during one revolution of the rotating device. Each of the N transponders damps the EM field when passing through the EM field. The transceiver module determines a rotational speed of the rotating device based on a number of times the EM field is damped during a period. N is an integer greater than or equal to 1.
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Citations
18 Claims
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1. A system comprising:
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a transceiver module that generates an electromagnetic (EM) field using an antenna; and a rotating device that includes N transponders arranged such that each of the N transponders passes through the EM field during one revolution of the rotating device, wherein each of the N transponders damps the EM field when passing through the EM field, wherein the transceiver module determines a rotational speed of the rotating device based on a number of times the EM field is damped during a period, and wherein N is an integer greater than or equal to 1. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method comprising:
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generating an electromagnetic (EM) field using an antenna; and determining a rotational speed of a rotating device based on a number of times the EM field is damped during a period, wherein the rotating device includes N transponders arranged such that each of the N transponders passes through the EM field during one revolution of the rotating device, wherein each of the N transponders damps the EM field when passing through the EM field, and wherein N is an integer greater than or equal to 1. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification