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Device for controlling the parameters of a manufacturing process

  • US 5,631,839 A
  • Filed: 06/19/1995
  • Issued: 05/20/1997
  • Est. Priority Date: 07/18/1994
  • Status: Expired due to Fees
First Claim
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1. Device for continuously controlling a manufacturing process, in order to perceive continuously any transient or perturbational phenomena occurring during this process, a device comprising:

  • a) a local area network;

    b) at least one remote monitor connected to said local area network through a first interface for receiving, in real time, signals in order to control the manufacturing process;

    c) a plurality of sensors, each of said sensors measuring a value of one of a plurality of parameters of the manufacturing process and transforming said value so as to produce an analogue signal;

    d) a plurality of analogue to digital converters, each of said analogue to digital converters connected to one of said sensors and located proximate thereto, each of said analogue to digital converters receiving one of said analogue signals in order to convert said one of said analogue signals into a sequence of numerical values representing an instantaneous state over time of the corresponding parameter, each of said analogue to digital converters being connected to said local area network through a second interface;

    e) processing means connected through a third interface to said local area network for storing and processing said sequences of numerical values and comparing said sequences of numerical values with predetermined reference values in order to generate a plurality of comparison signals, said local area network conveying said comparison signals to said remote monitor and from said analogue to digital converters to said processing means.

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