G - Physics – 08 – C
Patent
G - Physics
08
C
G08C 19/00 (2006.01) G08C 19/02 (2006.01)
Patent
CA 2107519
The present invention relates to a circuit which is connected to a two-conductor control system for a variable analog DC input and that also enables bidirectional digital communication along the two conductors for diagnostic operations of a transducer. The novel circuit includes a switch circuit that has a first position that provided the ability to accept both the variable DC analog signals and the bidirectional digital communication signals by presenting a first impedance for the DC signals and a second switch position for providing a second substantially higher impedance while using the same two-conductor system. The novel invention also includes an auxiliary analog input signal to the circuit which allows further control as a current feedback to a control algorithm in a microcontroller. An auxiliary process transmitter can sense pressure, temperature, flow or some other process related variable and couple it to the circuit for control of the transducers. Finally, the novel invention includes a novel voltage regulator and a capacitive voltage supply for utilizing the voltage on the two conductors from the controller to also power the device.
Gassman George Wayne
Grumstrup Bruce Frederick
Seberger Stephen George
Fisher Controls International Inc.
Ridout & Maybee Llp
LandOfFree
Communication system and method does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Communication system and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Communication system and method will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1584952