Field device with dynamically adjustable power consumption radio frequency communication
First Claim
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1. A field device comprising:
- a plurality of terminals coupleable to a process control loop;
a shunt control module operably coupled between the plurality of terminals and configured to determine an amount of current flowing therethrough; and
a digital communication bus operably coupled to wireless communication circuitry, the wireless communication circuitry being configured to operate at varying power levels based upon excess power available from the field device.
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Abstract
A field device for use in an industrial process control or monitoring system includes terminals configured to connect to a two-wire process control loop configured to carry data and to provide power. In one embodiment, RF circuitry in the field device is configured for radio frequency communication having variable power consumption. In another embodiment, the RF circuitry is coupled to the field device through a separate digital communication bus. A method of modulating the power of RF communication based upon a process communication signal is also provided.
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Citations
16 Claims
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1. A field device comprising:
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a plurality of terminals coupleable to a process control loop;
a shunt control module operably coupled between the plurality of terminals and configured to determine an amount of current flowing therethrough; and
a digital communication bus operably coupled to wireless communication circuitry, the wireless communication circuitry being configured to operate at varying power levels based upon excess power available from the field device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification