CN1555945A

CN1555945A - Continuous casting bleed out detecting instrument

Info

Publication number: CN1555945A
Application number: CNA2003101208437A
Authority: CN
Inventors: 李文兵; 肖正宇
Original assignee: Beijing Aritime Intelligent Control Co Ltd
Current assignee: Beijing Aritime Intelligent Control Co Ltd
Priority date: 2003-12-30
Filing date: 2003-12-30
Publication date: 2004-12-22

Abstract

A molten steel leakage detecting instrument for conticaster is composed of a DSP chip using a forecast algorithm model, a FPGA chip, a D/A converter array, universal I/O unit, serial port, control lines, LCD, keyboard, address lines, data lines, A/Dconverter, protecting circuit and speaker for alarm.

Description

A kind of continuous casting bleed-out detector

Technical field

The invention belongs to metallurgical continuous casting bleed-out detection technique field, a kind of continuous casting bleed-out detector particularly is provided, be used to detect the continuous casting sticker type breakout.

Background technology

Bleed-out is a kind of catastrophic failure in the continuous casting operation, wherein sticker type breakout be occur the most frequent a kind of.Utilize detection technique bleed-out is forecast it is the main path of avoiding sticker type breakout.At present, a part of iron company of each big steel company of the world and China all is equipped with the breakout prediction system.These systems all are made up of two parts: data collecting system and bleed-out model prediction system.Wherein, data collecting system all is to adopt thermocouple detected temperatures signal is installed on crystallizer; Bleed-out model prediction system then adopts industrial computer that data are carried out analysis and judgement, provides the forecast result.Because the use of industrial computer makes the reliability of system and the use under adverse circumstances be subjected to great restriction, simultaneously the cost of system can not be lowered.

Summary of the invention

The object of the present invention is to provide a kind of continuous casting bleed-out detector, be used to detect the continuous casting bleed-out accident.

System of the present invention adopts the structure of digital signal processing chip (DSP)+field programmable gate array chip (FPGA).Form by digital signal processing chip 1 (concrete model is TMS320C31), field programmable gate array chip 2, digital to analog converter array 3, general input and output 4, communication serial ports 5, control line 6, LCD 7, keyboard 8, address wire 9, data wire 10, analog-to-digital converting module 11, holding circuit 12, signal input 13, loudspeaker 14.Continuous casting bleed-out is forecast that algorithm model is embedded in the digital signal processing chip (1), detect with forecasting model, if detect the bleed-out sign, output high signal and alarm indication; The breakout prediction algorithm model has comprehensively adopted logical method and fuzzy neuron network technology to finish forecast to bonding steel leakage jointly.

Because the data volume of the Signal Pretreatment algorithm process of bottom is big, processing speed is required height, adopt the field programmable gate array chip to carry out hardware and realize that the field programmable gate array chip also comprises sheet selected control system simultaneously.High-rise Processing Algorithm is because the control structure complexity adopts arithmetic speed height, communication mechanism digital signal processing chip powerful, that can carry out floating-point operation to realize.Peripheral hardware comprises: LCD (displays temperature curve and warning) 7, keyboard (adjusting forecast parameter) 8, can with the RS232 communication port 5 of microcomputer (PC) communication; General I/O 4 is connected with loudspeaker 14.

The characteristics of this detector are that continuous casting bleed-out is forecast that algorithm model is embedded in the chip, are that the breakout prediction detector of core has the function that detects the continuous casting sticker type breakout with this chip.This instrument, detects with forecasting model as input with the mould temperature signal, if detect the bleed-out sign, and output high signal and alarm indication.

The breakout prediction algorithm model of this detector has comprehensively adopted logical method and fuzzy neuron network technology to finish forecast to bonding steel leakage jointly, according to contents such as on-site signals model is made a strategic decision.Usually the logic judgement is more accurate to the calculating of model, but lacks flexibility; Neuroid (or fuzzy neuron network) technology has stronger antijamming capability.But the neuroid The Application of Technology also has a fatal problem, and that is exactly the collection and the arrangement of training data.It not only requires a large amount of training datas, also needs these data representative and comprehensive, and like this, the neutral net that trains just has stronger model ability, new data is just had accurately judge.More than the integrated use of two kinds of methods, make forecast algorithm adaptability strong, the accuracy height has very strong theoretical background.

The invention has the advantages that: this instrument have forecast accurately, applicability is strong, reliability is high, anti-interference, low cost and other advantages.The functional equivalent of continuous casting bleed-out forecast instrument is in bleed-out model prediction system, and it also needs temperature information that data collecting system obtains as input.Owing to be a kind of instrumentation, it does not resemble industrial computer harsh (computer floor is interior) to environment requirement, can be installed in the continuous casting scene, can significantly reduce compensating wire and mounting cost; Simultaneously, owing to do not re-use complicated industrial computer, reliability is greatly improved; The forecast algorithm adopts fuzzy artificial neural network and logic control technology, makes the scope of application more wide, has improved the accuracy that detects.

Description of drawings

Accompanying drawing 1 is a kind of composition schematic diagram of the present invention.Wherein, digital signal processing chip 1 (concrete model is TMS320C31), field programmable gate array chip 2, digital to analog converter array 3, general input and output 4, communication serial ports 5, control line 6, LCD 7, keyboard 8, address wire 9, data wire 10, analog-to-digital converting module 11, holding circuit 12, signal input 13.

Accompanying drawing 2 is detector of the present invention front side schematic appearance.Wherein LCD 7, keyboard 8, loudspeaker 14.

Accompanying drawing 3 is detector rear side schematic appearance of the present invention.Wherein input wires terminal 15, supply hub 16, signal output plughole 17.

Claims

1, a kind of continuous casting bleed-out detector is characterized in that: the structure that adopts digital signal processing chip DSP+field programmable gate array chip FPGA; Specifically constitute: form by digital signal processing chip (1), field programmable gate array chip (2), digital to analog converter array (3), general input and output (4), communication serial ports (5), control line (6), LCD (7), keyboard (8), address wire (9), data wire (10), analog-to-digital converting module (11), holding circuit (12), signal input (13), loudspeaker (14); Continuous casting bleed-out is forecast that algorithm model is embedded in the digital signal processing chip (1), detect with forecasting model, if detect the bleed-out sign, output high signal and alarm indication; The breakout prediction algorithm model has comprehensively adopted logical method and fuzzy neuron network technology to finish forecast to bonding steel leakage jointly.