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Distributed control architecture for dispensing particulate material into a fluid medium

  • US 20050102058A1
  • Filed: 05/24/2004
  • Published: 05/12/2005
  • Est. Priority Date: 05/23/2003
  • Status: Active Grant
First Claim
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1. A system comprising:

  • a first dispensing device;

    a second dispensing device for dispensing particulate matter, the second dispensing device comprising;

    a container for holding particulate matter;

    a conduit to transport a stream of liquid carrier and to receive particulate matter from the container;

    a sensor to monitor the amount of dry particulate matter dispensed; and

    a local controller coupled to the sensor to generate a signal when a predetermined quantity of particulate matter is dispensed and to modify the flow of particulate matter into the conduit in response to said signal; and

    a parent controller coupled to the first and second dispensing devices, wherein the parent controller transmits to the second dispensing device remote signals associated with a first set of dispensing device operations and the local controller generates local signals associated with a second set of dispensing device operations.

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