WO2016199059A1 - Système de commande d'une installation technologique - Google Patents

Système de commande d'une installation technologique Download PDF

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Publication number
WO2016199059A1
WO2016199059A1 PCT/IB2016/053399 IB2016053399W WO2016199059A1 WO 2016199059 A1 WO2016199059 A1 WO 2016199059A1 IB 2016053399 W IB2016053399 W IB 2016053399W WO 2016199059 A1 WO2016199059 A1 WO 2016199059A1
Authority
WO
WIPO (PCT)
Prior art keywords
die
computerised
control system
unit
signal
Prior art date
Application number
PCT/IB2016/053399
Other languages
English (en)
Inventor
Luca Baraldi
Original Assignee
Baraldi S.R.L.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Baraldi S.R.L. filed Critical Baraldi S.R.L.
Publication of WO2016199059A1 publication Critical patent/WO2016199059A1/fr

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/0037—Radiation pyrometry, e.g. infrared or optical thermometry for sensing the heat emitted by liquids
    • G01J5/004—Radiation pyrometry, e.g. infrared or optical thermometry for sensing the heat emitted by liquids by molten metals
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/0044—Furnaces, ovens, kilns
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/02—Constructional details
    • G01J5/025—Interfacing a pyrometer to an external device or network; User interface
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/02—Constructional details
    • G01J5/026—Control of working procedures of a pyrometer, other than calibration; Bandwidth calculation; Gain control

Definitions

  • This invention relates to a control system of a technological plant and in particular a control system of a metallurgical plant, especially dedicated to die casting, as a function of thermological parameters measured in the plant.
  • the die casting plants in question generally comprise a die, consisting of two half-dies, into which the molten metal is injected.
  • the die is kept closed by hydraulic presses for the entire duration of the injection and is opened at the end of the injection for extracting the cooled and solidified piece.
  • thermological parameters A prior art system and process for controlling and monitoring a die casting plant as a function of thermological parameters are described, for example, in patent document EP1535034.
  • These systems comprise one or two radiation sensors, for example consisting of so-called thermal cameras, each relative to a respective half- die.
  • the radiation sensors When opening the die, acquire thermological parameters of a surface of the respective half-die which are sent to a control centre of the press and in particular to a computerised command and control unit.
  • the computerised unit is configured to acquire and process all the thermological parameters to obtain corresponding temperature values, display and map a distribution of the temperature values of the surface investigated and control and adjust the distribution of the operating temperature of the die.
  • a drawback of this system derives from the relative complexity of the processing system which acquires an extremely large quantity of data and requires a supervision by an expert technologist and a corresponding sophisticated computerised unit, configured for storing a relatively high quantity of data for each press.
  • the main aim of this invention is to obviate the above- mentioned drawbacks.
  • the aim of this invention is to provide a control system of a technological plant which is more easily managed, compared with prior art solutions, even by unskilled personnel.
  • Another aim of this invention is to provide a control system of a technological plant which is more economical than prior art solutions in particular if using of two or more presses.
  • the numeral 100 denotes a technological plant designed in particular for die casting metal parts. Detailed description of preferred embodiments of the invention
  • the plant 100 of a substantially known type and described only insofar as necessary for understanding this invention, comprises a plurality of dies, each consisting of, for example, two half-dies, inside of which molten metal is injected. Each die is kept closed by a corresponding hydraulic press for the entire duration of the injection and is opened at the end of the injection for extracting the cooled and solidified piece.
  • the numeral 110 denotes blocks corresponding, in short, to the units formed by half-dies and presses and reference is made below without distinction also to only the dies or only the presses.
  • the plant 100 comprises a control system, generically labelled 1 , for monitoring and controlling the die casting processes actuated in the plant 100.
  • control system 1 is suitable to control of any type of casting process such as, for example, low pressure casting, by gravity, in dies and the like.
  • the system 1 comprises, for each die 110, a first and a second detecting group 2, each designed for the monitoring of a respective half-die.
  • Each unit 2 is configured to acquire the thermological parameter, that is to say, preferably the thermographic image of the half-die, and generate at least a first signal S1, S1' comprising at least a data representing the thermological parameter of interest of the respective half-die.
  • the first signal S1 , S1' comprises a plurality of radiometric data acquired from the corresponding detecting group 2.
  • the signals generated by the units 2 are all labelled S1 , SV whilst the data contained therein are different for each half-die on the basis of the operation of the die.
  • Each detecting group 2 is for example of the type described in patent EP1535034 which is incorporated herein by reference for completeness of description.
  • each unit 2 comprises a thermal camera sensitive to infrared radiation which is able to obtain thermographic images and provided with a corresponding radiation sensor and relative electronic card or electronics not illustrated.
  • Each thermal camera preferably relates to a corresponding half-die for acquiring thermographic images of it.
  • the thermal cameras acquire a thermographic image of an inner surface of the half-dies the temperature of which indicates a correct execution of the die casting process.
  • Each unit 2 preferably comprises a protective casing inside of which is housed the thermal camera and provided with a window suitably protected through which the thermal camera is able to acquire the above-mentioned thermographic images.
  • Each unit 2 comprises a shutter of the above-mentioned window for protecting it from environmental turbulences typical of the die casting processes during operation of the plant 100 and movable between a first operating configuration wherein the thermal camera has a clear field of vision for acquiring the thermographic images and a second operating position wherein the window is closed and protected.
  • Each unit 2 preferably comprises a pneumatic system in communication with the inside of the casing and with the shutter for an introduction of air in the casing for the purposes of both cooling and cleaning.
  • the pneumatic system is configured, preferably, for blowing air on the window to keep it clean and allow an optimum acquisition of the thermographic images.
  • the control system 1 comprises, for each press 110, a computerised control unit 4, located at the respective press 110 and in communication with the respective unit 2.
  • the unit 4 comprises, for example, a personal computer, of substantially known type, comprising a case, a monitor and a keyboard, or even a laptop computer also substantially of known type.
  • the computerised unit 4 is configured to control the measurement units 2 and receive the respective first signal S1 , S1 '.
  • the thermal cameras acquire an image of the die when the shutter is opened, that is to say, the shutter is opened the instant the thermal camera must acquire an image of the die.
  • the computerised unit 4 and the detecting groups 2 are operatively positioned and configured, in particular the electronic cards of the thermal cameras and the movement systems, not illustrated, of the shutter, in such a way as to acquire an thermographic image of the half-dies, in particular of their inner surface when the die is open.
  • the computerised unit 4 is configured to acquire and process the signal S1 , SY and the radiometric data contained therein to obtain the first summary datum.
  • the computerised unit 4 is preferably configured for highlighting a plurality of regions of interest ROI of the die, that is, of its inner surface, according to a predetermined map.
  • the regions of interest ROI are regions of the die or half-dies wherein a variation of the temperature of the die beyond respective predetermined limits (die too hot or die too cold) can result in a production of pieces which do not conform with expected standards and must therefore be rejected.
  • the computerised command and control unit 4 is in communication with the die 110 and configured to activate the unit 2 and acquire the above- mentioned first signal S1 , S1', in particular to obtain the first summary datum, with a predetermined delay starting from a second signal S2 representing an operating configuration of the die 110.
  • the second signal S2 indicates a predetermined open configuration of the press 110 starting from which, after the above- mentioned delay, the half-dies will be completely moved away and captured by the respective thermal camera.
  • Each computerised unit 4 for example, as mentioned, a personal computer equipped with a monitor, is substantially on board the press 110 and can be used by an operator normally responsible for monitoring the press 110.
  • each computerised unit 4 is configured to supply to the operator, for example on the above-mentioned monitor at the die 110, at least the above-mentioned first summary datum representing an operation of the die 110 as a function of the first signal S1 , S1 '.
  • the first information relating to the operation of the die 110 is made available on the machine, by means of the personal computer 4.
  • each computerised unit 4 is configured to supply the operator with a trend of the temperature at least in the above-mentioned regions of interest ROI of the die HO.
  • the summary datum supplied to the operator on the machine using the computerised unit 4 comprises the trend of the temperatures in the regions of interest ROI of the die 110.
  • each computerised unit 4 is configured to supply the operator with a thermographic image of the respective die 110, in particular as acquired by the respective thermal camera.
  • the summary datum supplied to the operator on the machine using the computerised unit 4 comprises thermographic images of the respective die 110.
  • each computerised unit 4 is configured for generating summary details, representing an operation of the respective die 110, included in the first information and generated as a function of the signal S1 , S1'.
  • the summary details are of the "GOOD” type if the die 110 is operating correctly on the basis of the thermographic images acquired or of the "FAIL” if the thermographic images acquired represent a certain malfunction.
  • the computerised unit 4 is preferably configured to supply the operator with the above-mentioned map of the regions of interest ROI.
  • the computerised unit 4 is preferably configured to provide the operator with details of the predetermined delay.
  • the operator possesses schematically the configuration of the units 2 and of the system 1 on the basis of the map of the regions of interest ROI and the predetermined delay.
  • the first information supplied to the operator on the machine is basically summary datum, processed by the unit 4 on the basis of the signal S1 , S1', which allows the operator to control the thermal trend of the die 110 but, in practice, it does not allow an analysis of all the data transmitted by the respective detecting group 2.
  • the system 1 comprises a supervision unit 3 equipped with a respective computerised command and analysis unit 5 in communication with the computerised units 4 for controlling the dies 110.
  • a supervisor unit 5 for controlling the computerised units 4 for controlling the dies 110.
  • the computerised control and analysis unit 5 will also be indicated below as the supervisor unit 5.
  • control system 1 comprises a network or switch device 6, substantially of known type and not described, for connecting the computerised units 4 with the computerised control and analysis unit 5, to define, in practice, a data transmission network.
  • the signals S1 , ST of all the units 2 are sent to the computerised control and analysis unit 5, that is, all the data incorporated in the signals S1 , ST of each detecting group 2 are sent to the computerised control and analysis unit 5.
  • the computerised control and analysis unit 5 is configured for storing all the data transmitted by the units 2 and is preferably configured for analysing them, in such a way as to define an optimum operation of the plant 100.
  • the unit 5 is configured to process all the radiometric data incorporated in the signal S1 , ST and generate at least second exhaustive information on the operation of the plant 100.
  • the unit 5 is configured to perform radiometric analysis on the data incorporated in the signal S1 , ST in such a way as to optimise the operation of the plant 100.
  • the unit 5 is preferably also configured for storing the analyses.
  • each press 110 there is a computerised unit 4 for commanding and controlling the units 2 which is able to supply to the operator on the machine a set of summary datum representing the operation of the press 110 on the basis of the radiometric data incorporated in the signal S1 , ST.
  • the supervisor unit 5 on the other hand is configured for a more sophisticated and exhaustive analysis which provides exhaustive information suitable for optimising the plant 100.
  • the unit 4 basically has lower performance levels than unit 5 and is configured to provide only the summary datum to the operator on the machine in such a way as to activate any emergency procedures.
  • the unit 5, on the other hand, is more sophisticated and high performing and is also capable of analysing the radiometric data to optimise the operation of the plant 100.
  • the units 2 generate the signals S1 , S1 ', complete with all the thermological information relative to the respective die 110, which is transmitted both to the respective computerised unit 4 and to the supervision unit 5.
  • the unit 4 performs a simplified processing of the data of the respective unit 2 for supplying to the operator on the machine summary datum whilst the supervision unit 5 collects all the data of all the dies 110 and is able to perform complete radiometric analyses for optimising the operation of the individual dies 110 and of the entire plant 100.
  • the supervision unit 3 and in particular the computerised control and analysis unit 5, is in communication with a data exchange network 7, for example the Internet.
  • the unit 5 is configured for sharing in the data exchange network 7 both, if necessary, the signals S1 , SV of the individual dies and the results of the processing performed representing the operation of the dies 110 and the plant 100.
  • the second computerised unit 5 is configured for sharing in the network 7 the above-mentioned second exhaustive information on the operation of the plant 100.
  • the unit 5 is configured to share in the network 7 the thermographic images of the dies 110 as acquired by the detecting groups 2.
  • the unit 5 is preferably configured for sharing in the data exchange network 7 a processing of the data received from the control units 4 representing in particular the operation of the plant 100.
  • the sharing of the information on the network preferably allows a transmission of the information to the above-mentioned second operator, who is more skilled than the operators on the press, who may monitor the system 1 and the plant 100 even remotely.
  • the system 1 comprises a first and a second detecting group 2 controlled by the computerised command and analysis unit 5.
  • These units 2 are used for monitoring the thermal trend of a respective press 110 and the operation is similar to that described above for the units 2 controlled and commanded by the units 4.
  • control units 4 of simplified type for example the above-mentioned personal computers, with the respective detecting groups 2
  • the system 1 each on board a respective press 110
  • a single sophisticated supervision unit 5 for analysis which is in any case also configured for controlling the respective detecting groups 2 in a corresponding press 110.
  • the operator on the machine who is normally present in the die casting plants for the operation of the respective press, has a selection of information representing the operation of the press.
  • the information made available through the control unit can be quickly and easily interpreted and allow the operator to intervene quickly if necessary. All the data is sent to the supervision unit and from there it can be analysed and used by a person in charge of the plant or an expert technologist to optimise the operation of the plant 100.
  • control unit When the control unit is unmanned, all of the information or part of it is in any case available online and skilled personnel may monitor the system 1 and the plant 100 even remotely, for example using a smartphone.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Radiation Pyrometers (AREA)

Abstract

L'invention concerne un système de commande (1) d'une installation technologique (100) comprenant au moins une matrice (110) de coulée comprenant au moins une unité (2) pour détecter au moins un paramètre thermologique, de préférence une image thermographique de la matrice (110), conçu pour acquérir le paramètre thermologique et pour générer au moins un premier signal S1, S1' comprenant le paramètre thermologique; le système de commande comprend une première unité de commande informatisée (4), située au niveau de la matrice (110), en communication avec le groupe de détection (2), conçue pour commander le groupe de détection (2), acquérir et traiter le premier signal S1, S1' et fournir à un opérateur au niveau de la matrice (110) une première donnée récapitulative en fonction du premier signal S1, S1' et représentant une opération de la matrice (110); le système de commande (1) comprend une unité de supervision (3) comprenant une seconde unité de commande et d'analyse informatique (5) en communication avec la première unité de commande (4) et avec le groupe de détection (2) conçue pour acquérir et traiter le premier signal S1, S1' et pour fournir à une personne en charge de l'installation et/ou à un technologue de processus une seconde information représentant une opération de la matrice (110) et/ou de l'installation (100).
PCT/IB2016/053399 2015-06-12 2016-06-09 Système de commande d'une installation technologique WO2016199059A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITUB20151351 2015-06-12
IT102015000023369 2015-06-12

Publications (1)

Publication Number Publication Date
WO2016199059A1 true WO2016199059A1 (fr) 2016-12-15

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0081246A2 (fr) * 1981-12-08 1983-06-15 Bethlehem Steel Corporation Procédé et dispositif pour déterminer la température d'une masse dans un environnement hostile
US4463437A (en) * 1981-04-27 1984-07-31 Bethlehem Steel Corp. Furnace burden thermographic method and apparatus
US6197086B1 (en) * 1997-11-13 2001-03-06 Bethlehem Steel Corporation System and method for minimizing slag carryover during the production of steel
WO2004011891A2 (fr) * 2002-07-25 2004-02-05 Baraldi Chemgroup Srl Procede de detection de la repartition de temperatures de service dans un processus technologique

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4463437A (en) * 1981-04-27 1984-07-31 Bethlehem Steel Corp. Furnace burden thermographic method and apparatus
EP0081246A2 (fr) * 1981-12-08 1983-06-15 Bethlehem Steel Corporation Procédé et dispositif pour déterminer la température d'une masse dans un environnement hostile
US6197086B1 (en) * 1997-11-13 2001-03-06 Bethlehem Steel Corporation System and method for minimizing slag carryover during the production of steel
WO2004011891A2 (fr) * 2002-07-25 2004-02-05 Baraldi Chemgroup Srl Procede de detection de la repartition de temperatures de service dans un processus technologique

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
WANG HUAJIAN ET AL: "Measurements on flame temperature and its 3D distribution in a 660 MWe arch-fired coal combustion furnace by visible image processing and verification by using an infrared pyrometer; Measurements on flame temperature and its 3D distribution in a 660 MWe AF coal combustion furnace", MEASUREMENT SCIENCE AND TECHNOLOGY, IOP, BRISTOL, GB, vol. 20, no. 11, 1 November 2009 (2009-11-01), pages 114006, XP020168399, ISSN: 0957-0233 *

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