Process field device with radio frequency communication
First Claim
Patent Images
1. A field device for use in an industrial process control or monitoring system, comprising:
- terminals configured to connect to a two-wire process control loop configured to carry data and to provide power;
radio frequency (RF) communication circuitry configured for radio frequency communication; and
power supply circuitry configured to power the RF circuitry using power received completely from the two-wire process control loop.
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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. The loop carries data and provides power to the field device. RF circuitry in the field device is provided for radio frequency communication. A power supply powers the RF circuitry using power received from the two-wire process control loop.
175 Citations
28 Claims
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1. A field device for use in an industrial process control or monitoring system, comprising:
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terminals configured to connect to a two-wire process control loop configured to carry data and to provide power;
radio frequency (RF) communication circuitry configured for radio frequency communication; and
power supply circuitry configured to power the RF circuitry using power received completely from the two-wire process control loop. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A method for communicating in a field device for use in an industrial process control or monitoring system, comprising:
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connecting to a two-wire process control loop configured to carry data and to provide power;
communicating using a radio frequency (RF) signal; and
powering the RF communicating using power received completely from the two-wire process control loop. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28)
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Specification