KR0135003B1 - Collection method for measurement data rolling situation - Google Patents

Abstract

The present invention relates to a measurement data quality method for each rolling position of a hot rolled coil, and collects measurement data from the hot rolling plant (1) with various sensors (2) for collecting plant process data. Processed by PLC (4) and transferred the processed data to process computer (7) and process data analysis system (8) for plant tracking and setting function management via station (5) and control system dataway (6). In the measurement data collection method of obtaining the basic data of the rolling process, a pulse signal generator (PLG) is applied to each of the motors 13 to 16 in the roughing mill 10, the finishing mill 11, and the winding machine 12. ) (17) ~ (20)

And counting the pulse signal generated by the pulse signal generators 17 to 20 to the counter 21 in the PLC 25 to obtain the traveling distance data of the work piece, and the data is continuously obtained for each measurement value of a certain length of the instrument. Data stored and transmitted to the transmission device 22 stores the measured data for each strip and transmitted to the station 5 for processing to collect the process data for each rolling position of the hot-rolled coil to minimize the quality defects, work performance data length As the direction comes out, the defective parts of the product can be precisely removed in advance, making it easier to correct the product and preventing the product from scratching. In the process data analysis system, the various working conditions and rolling provided in the longitudinal direction of the hot rolled coil Based on the results, the analysis of the rolling results in relation to the working conditions is conducted and analyzed to improve the hot rolling technology. There is an advantage that becomes easier.

Description

How to collect measurement data for each hot rolled coil

The present invention relates to a method for collecting measurement data such as temperature, width, thickness, rolling force, and the like of a hot-rolled material in a steel plant for each rolling position, and in particular, a thermometer, a width gauge, a thickness gauge, a rolling force measuring sensor, and the like. Process data such as temperature, width, thickness, and reduction force, which are continuously measured by various measuring equipments, are processed by the pulse signal corresponding to a certain length in the rolling motor pulse generator (PLG). The present invention relates to a method for collecting measurement data for each rolled position of a hot rolled coil, which enables to collect measurement data for each position during the rolling of a material by accurately grasping the same.

In the hot rolling process, the following two methods are generally used as a conventional method of collecting measurement data such as temperature, width, thickness, and rolling force of a rolled material.

One method is to take the average value after the sensor detects the material and the process computer reads the measured value of the instrument 5 times at 100 ms intervals after a certain time (0.5 sec-1 sec) by a timer. This value is recognized as a representative measurement of a certain part of the material (point 1). This method is used for precise control by the performance value in the mathematical model for thickness prediction control of the material tip. Preset control is performed.

Another way is that the process computer informs the instrument and the programmable logic controller dedicated to collecting the measurement data before it passes through the instrument. When the detection signal is detected, the detection signal is supplied to the dedicated PLC for collecting the measurement data, and the measurement data is continuously transmitted to the PLC as a deviation value from the set information (control information set from the process computer).

Then, the PLC counts up the deviation value for each predetermined length by the signal of the motor pulse signal generator (PLG) from the time point at which the material is passed from the measuring instrument. At the end of the pass, only the band split is sent to the process computer.

However, the conventional measurement data collection method described above has a problem in that it is impossible to grasp the quality performance of each location of the material because it can recognize only the band-specific results that classify the quality situation over the entire length of the material.

In addition, data analysis on the work performance, which is essential for improving the control function, is performed manually based on chart recording papers displayed on the pen-recorder, so that data analysis takes a lot of time and errors due to manual work. Due to the difficulty of using the computer, it was difficult to improve the control technology through the performance analysis.

The present invention has been invented to solve all the problems of the conventional method for collecting the measurement data of a rolled material in consideration of the above situation, and hot rolling with precise control based on accurate measurement values (performance data) in various control systems of the hot rolling process. Providing basic data for improving the quality of the product in the process and quality inspection of the post-process product, improves work efficiency and reliability of quality inspection, and enables quality analysis of the process data in the length direction of the material. The purpose is to provide a method for collecting measurement data for each rolled position of a hot rolled coil.

Another object of the present invention is to provide a basic data that can be easily processed by computerization of a large amount of performance analysis after the database of the work performance provided at a certain length, and can be applied to improve the function of the control model according to the result. have.

1 is a configuration diagram of a measurement data collection system for each rolling position of a hot rolled coil employing the method of the present invention;

2 is a conceptual diagram for collecting and processing measurement data for each rolling position of a hot rolled coil according to the method of the present invention;

3 is a flowchart for determining a rolling position of a hot rolled coil by the method of the present invention.

* Explanation of symbols for main parts of the drawings

1: hot rolling plant 2: various sensors for data collection

3: PLC for various control 4: PLC for input / output processing

5: station 6: control system dataway

7: process computer 8: process data analysis system

10: roughing mill 11: rolling mill

12: winding machine 13, 14, 15, 16: motor

17,18,19,20: Pulse Signal Generator (PLG)

21: counter 22: data storage and transmission device

23: gate 24: data processing PLC

Measurement data collection method according to the rolling position of the present invention hot rolled coil to achieve the above object is to collect the measurement data from the various types of sensors (2) for collecting the plant process data from the hot rolling plant (1) programmable PLC (3; The process computer 7 and process data for plant tracking and setting function management are processed through a logic controller and a PLC 4 for input / output processing and processed data through a station 5 as a data connection device and a control system dataway 6. In the measurement data collection method of transferring to the analysis system 8 to obtain the basic data of the rolling process, each of the motors 13, 14, 15 in the roughing mill 10, the finishing mill 11, and the winder 12. A pulse signal generator (17.18, 19, 20) at 16 and counts the pulse signal generated by the pulse signal generator (17, 18, 19.20) to the counter (21) in the data processing PLC (24). Progress data The data is sent to the data storage and transmission device 22 continuously for each measurement value of a certain length, and the measurement data is stored for each strip, and then transmitted to the station 5 for processing. Characterized in collecting.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a configuration diagram of a system for collecting measurement data for each rolling position of a hot rolled coil employing the method of the present invention, and FIG. 2 is a conceptual diagram for collecting and processing measurement data for each rolling position of a hot rolled coil according to the present invention. As shown in FIG. 2, the pulse signal generators 17, 18, 19, and 20 are provided in the motors 13, 14, 15, and 16 in the roughing mill 10, the finishing mill 11, and the winding machine 12, respectively. The measuring device measurement value providing device which is provided and not shown in the figure is coupled by control logic inside the data processing PLC 24.

Therefore, the rolls of the roughing mill 10 and the finishing mill 11 and the motors 13, 14, 15, and 16 driving the winding machines 12 are respectively driven by the pulse signal generators 17, 18, 19, and 20. It generates a certain number of pulses per revolution. By combining the number of pulses with the diameter of the roll, the distance traveled by one pulse can be known.

Therefore, by counting the number of pulses to the counter 21 in the data processing PLC 24, the predetermined traveling distance on the rolling line can be known accurately.

Thus, the data processing PLC 24 reads the value of any one of the measured data consecutively for each pulse corresponding to the set length of the computer or the predetermined length therein, and stores it in the internal data storage and transmission device 22 by reading it. Accurately store and use location-specific data over the entire length of a hot rolled strip.

That is, the counter 21 includes a set length vs. pulse count determination logic, so that the measurement data is transferred to the data storage and transmission device 22 by opening the gate 23 at predetermined lengths.

The data storage and transmission device 22 contains logic for storing the measured data for each strip and transmitting it when requested by a higher level computer or other control system.

Fig. 3 is a flow chart for determining the rolling position of the hot rolled coil according to the method of the present invention and shows the internal logic of the distance and measurement data combination process.

The above logic is composed of logic indicating the start and end of data collection, logic for storing data, logic for transmitting stored data, and the like based on the number of pulse counts of the pulse signal counter.

First, material satiety signal in the input material (30,31) (F _6, F _7), the pulse signal (F _6, F ₇₎ of the pulse signal generators (47 and 48) is a rolling mill of claim 6 or claim 7 The logic is configured so that only one signal can be used as the last rolling mill is selected by the gates 33, 34, 52, 53 in case it is not used.

This is called the final rolling mill selection function and is used to determine the starting point of data collection.

Therefore, when the last rolling mill is identified, the pulse counter 59 counts the number of pulses generated from the pulse signal generators 47 and 48 when the bite signals F ₆ and F ₇ of the material input unit 30.31 enter the rolling mill. To the distance judgment logic (35, 36).

Distance determination logic 35 and 36, if applicable, when it is determined that the check the amount of material going pulse to the instrument that is, from the count number of the rolling mill at a distance (L _a, L _b) to the meter pulse counter 59 Signal to start collecting data.

From this time, whenever the number of pulse counts corresponds to the PLC internal designated pitch or the external system request pitch L, the data storage logic 63 sends the material progress distance data to the data memory 64. Save it.

When the rolling of the material is completed and the out signals F ₆ and F ₇ of the material are generated at the output parts 41 and 42 of the material, the current winding operation is performed among the pulse signal generations 49, 50 and 51 in the winding machine. When the pulse counter 59 receives the pulse generated from the pulse signal generator in the winding machine and the distance judgment logic 43 and 44 exits the measurement instrument, the gate 72 is opened by the data collection termination processing logic 45. End the collection.

The process data collected and stored in the data memory 64 is stored in the data memory 64 by the data transmission processing logic 71 when necessary by the transmission presence determination logic 70 that determines whether the external calculator and the control system need to transmit the data. Is sent).

Therefore, the host computer and other related control systems only require the data processing PLC 24 for the longitudinal data of each strip if necessary, and can use the data accurately collected for each length.

As described above, the present invention has an advantage of minimizing the quality defect by continuously tracking the properties of the longitudinal steel sheet which is changed by various factors and performing appropriate control thereto.

In addition, as the work performance data comes out in the longitudinal direction, it is possible to accurately remove defective parts of the product in advance, which facilitates corrective work, prevents product damage, and in the process data analysis system, length of hot rolled coils. Based on the various working conditions and the rolling performance provided by the analysis results by correlating the rolling results compared to the operating conditions there is an advantage that the improvement of the hot rolling technology becomes easier.

Claims (1)

The measurement data is collected from the hot rolling plant 1 with various sensors 2 for plant process data collection, processed by various programmable logic controllers 3 and PLC 4 for input / output processing, and the processed data are connected. In the method of collecting measurement data for transmitting basic data of the rolling process by transmitting to the process computer 7 and the process data analysis system 8 for plant tracking and setting function management through the station 5 and the control system dataway 6 as devices. The pulse signal generators 17, 18, 19.20 are provided in the motors 13, 14, 15, and 16 in the roughing mill 10, the finishing mill 11, and the winding machine 12, respectively. By counting the pulse signals generated by the generators 17, 18 and 19.20 to the counter 21 in the data processing PLC 24, the distance data of the workpiece is obtained, and the data are continuously stored for each measurement value of a certain length of the instrument. And send Value (22) after storing the measurement data for each strip directed to the method wherein the station (5) measurement data acquisition of the hot-rolled coils by rolling position characterized in that the transfer collects the process data by the rolling position of the hot rolled coil by treatment with.