Diagnostic method for analyzing and monitoring the process parameters in the operation of reciprocating equipment
OwnerJohn Mickowskiinventor
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Abstract
The method of the present invention utilizes a microcomputer in combination with a CRT and a multiplicity of transducers for monitoring process parameters in the operation of a reciprocating device having a linear stroke. A profile of the process parameters including pressure and velocity are generated as a function of stroke length and time and are stored in a non-volatile memory and graphically displayed on the CRT as master traces for comparison with current data profiles. The velocity is calculated by dividing distance transversed with time or by use of a velocity position transducer.
Claims6
A diagnostic method for analyzing and monitoring the process parameters of reciprocating equipment in which a linear reciprocating injection device is traversed over a fixed stroke length at high speed comprising the steps of:
- (a) dividing said stroke length into a predetermined number of incremental positions;
- (b) generating analog data corresponding to at least the position of said injection device and the pressure developed by said injection device at each such incremental position;
- (c) recording the time transpired in the movement of said injection device along said stroke length;
- (d) deriving the velocity of said injection device at each such incremental position;
- (e) graphically displaying the data corresponding to pressure and velocity on a display screen of a cathode ray tube as a function of the incremental position of said injection device along said stroke length until said velocity reaches a predetermined minimum level, with said display forming a master profile for said data;
- (f) storing the data representing said master profile at a predetermined address location in a nonvolatile memory of a microcomputer;
- (g) repeating the sequence of generating, calculating and storing analog data corresponding to pressure and velocity as a function of stroke position for a second die casting operating to form a current profile of such data for such second operation, and
- (h) displaying said current profile on said display screen along with said master profile for diagnostic comparison purposes.
Dependencies are inferred from the claim text.