KR950025574A - Quality control device for real time statistical process control - Google Patents

Abstract

The present invention relates to a quality control device for real-time statistical process control for real-time data generated in an automated unit facility in a production process on an industrial computer, and conventionally, process control in real time with respect to a data source of a single facility. In order to solve the problem that the operator does not directly manipulate the input data without storing data generated in real time in a database, the present invention provides a terminal 10 for handling the operator's operation and results. In order to analyze the statistics on the data from the data generation unit 30 consisting of a plurality of facilities, the real-time data collection unit 41, the data to store the data collected according to the collection cycle in the history database 51 Data extraction for extracting sample data from the storage unit 44 and the history database 51 (45), online statistical process control using data from the real-time data collection unit 41 and offline statistical process control to extract sample data from the history database through the data extraction unit using the name and collection period of the data source. An industrial computer 40 comprising a statistical process control unit 42 for performing an operation and a data error detection unit 47 for detecting an error in data output from the statistical process control unit 42, and detecting the state of the error. By providing an alarm unit 60 for displaying as an alarm signal, a graphic printing unit 20 for displaying statistical values from the statistical process control unit 47, and a graphic output unit 11 of the predetermined terminal 10. Productivity can be increased by reducing production costs, versatility and quality.

Description

Quality control device for real time statistical process control

Since this is an open matter, no full text was included.

1 is an overall system configuration of the present invention,

2 is a general data flow diagram of the present invention,

3 is a diagram showing an X-bar chart at the control chart output of the present invention.

Claims (3)

Data generation unit 30 comprising a predetermined terminal 10 for the operator to operate, a graphic printing unit 20 for outputting the result, and a large number of automated unit facilities 1... N in the production process. ), An industrial computer 40 which receives data from the data generation unit 30 through a predetermined interface, and an alarm unit that alerts by sound or display when data output from the industrial computer 40 is errored. And graphic printing displayed on a paper using a printer and a graphic output unit which displays data output from the industrial computer 40 on the screen of the predetermined terminal 10 by connection of a communication protocol. And a hard disk 50 comprising a history database 51 and a setup data 52, which are storage devices for storing the data received through the data generator 30, for real-time statistical process control. Quality control Value. According to claim 1, The predetermined terminal 10 is a graphic output unit 11 for outputting the data output from the industrial computer 40 in the form of a control chart or distribution chart on the screen by the operator A quality control device for real-time statistical process control comprising a setup input unit (12) for inputting predetermined setup data and a history database management input unit (13). The method of claim 1, wherein the industrial computer 40 interprets the setup data input from the setup input unit 12 to store and extract various statistical process control parameters, and to start, analyze, and end data collection. In addition, the setup unit 46 adjusts the graphic output form of the control chart, the distribution chart, and the statistics, and collects the raw data generated from the data generator 30 according to the collection cycle and transfers the sample amount to the statistical process control unit. The collecting unit 41, a data storage unit 44 for storing the collected data for statistical analysis in the history data base 51, and the data collected in real time by the operator's operation online statistical Offline statistical process control using the process control name and collection period of the data source is used to sample data from the history database (51). Statistical process control unit 42 which extracts and analyzes through the exit 45 and calculates the statistics required for the control chart and distribution chart, and detects whether the calculated statistics satisfy the error detection conditions and calculates the error rate. And a data error detection unit (47) and an alarm unit (60) for generating an alarm sound when the error rate is higher than a predetermined value. ※ Note: The disclosure is based on the initial application.