CN1127863A - Microcomputer controlled device and method for boiler - Google Patents
Microcomputer controlled device and method for boiler Download PDFInfo
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- CN1127863A CN1127863A CN 95111747 CN95111747A CN1127863A CN 1127863 A CN1127863 A CN 1127863A CN 95111747 CN95111747 CN 95111747 CN 95111747 A CN95111747 A CN 95111747A CN 1127863 A CN1127863 A CN 1127863A
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Abstract
The microcomputerized controller for boiler is composed of microcomputer, CRT, keyboard, real-time acquisition and display devices for working parameters, and high-capacity hard disk for storing all the history records, alarm records, and statistics. Based on PID control principle, the servo control of whole boiler procedure is conducted by sampling, operation and output steps, resulting in optimum control effect.
Description
The present invention relates to a kind of invention that is used for various boilers and other industrial process are done sequential control or servo-controlled computer system.
Usually in the industrial process, the boiler Control System of Microcomputer adopts homemade single-chip microcomputer to realize with the assembly instruction making software, shortcoming is that performance and reliability are lower, versatility and scalability are not strong, production and field adjustable labour intensity are big, concrete application operating complexity etc. though it still belonged to the advanced person in similar technology at that time, are difficult in breakthrough and the development of carrying out matter on output and the running quality.Utilize external original-pack PLC and Distributed Control System to carry out boiler control, cost is too high, and the general user can not receive.If these problems be mustn't go to solution, be difficult to adapt to the development and the needs of domestic economy situation and computer technology and energy-conservation cause.
The objective of the invention is to utilize the advantage of modern industry PC computer development, improve the boiler Control Technique of Microcomputer, should create the interface environments of good man-machine interface, simplify and use operation, establishment is applicable to the dissimilar boilers and the user's of different requirements common software, improves system's control efficiency and quality and the speed of service and reliability again.
Basic thought of the present invention is: a kind of boiler controller of CRT display screen comprises: input keyboard; Be used for gathering in real time and show the central working parameters device of boiler operatiopn; Be used for controlling in real time the industrial boiler operation device; Be used for certain hour print record boiler operatiopn historical situation device at interval.It is characterized in that this boiler controlling device also comprises: adopt big capacity hard disk historgraphic data recording equipment, be used to store historical records long-time, the short whole sampled points of boiler at interval, alarm logging and economic statistics amount, and can carry out inquiry unit at any time easily; Regulated by keyboard input, the device that the boiler combustion working condition is controlled automatically; Regulated by keyboard input, the device that boiler feedwater equipment is controlled automatically; Regulated by keyboard input, the device that boiler air inducing equipment is controlled automatically; Regulated by the keyboard input, to the pressure of oxygen-eliminating device, the device that liquid level is controlled automatically; The boiler warning device, this installs the boiler operatiopn abnormal conditions, carries out Chinese speech and reports to the police.
A kind of method of boiler controlling device of CRT display screen, utilize the PID control principle, through sampling, computing, output several steps the boiler industrial process is made SERVO CONTROL, it is characterized in that adopting the following step: in the external storage that deposits the boiler SERVO CONTROL common software desiring to execute the task and configuration data in this computer system; Start this computer operation, at first loading of operating system and general boiler control software read in during software initialization with the corresponding configuration file of concrete steam generator system, thereby constitute the automatic control system that adapts with this steam generator system; The sampling subsystem, regularly the sampled point to the boiler working condition follows back sampling, and the signal that instrument is exported carries out A/D conversion and a series of data transaction work; Display subsystem regularly shows the data that collected, and display mode adopts various ways such as character string, block diagram trend curve, simulated pointer formula gauge outfit, and adopts abundant colors to represent according to different situations such as whether report to the police; Database subsystem writes down each sampling number certificate with the database file form at interval with certain hour automatically, constitutes historical data base, and data file is compatible mutually with the dBase groupware commonly used, and the inquiry of support historical data base and duplicating; Autonomous control subsystem, time pin call specific control algolithm and carry out computing dissimilar automatic control loops, calculate output valve and are responsible for outputing to executing agency and move; Man machine interface subsystem, adopt the graphical user interface technology of international popular, and adopt methods such as full-localized window type Display Technique and online help to improve user's operating characteristics, functions such as online modification sampled point range, control loop parameter are provided, support pull-down menu keyboard and input methods such as movable-frame hives; Printer subsystem can the history of printing data, tendency chart, and teams and groups' form adopts the spooled print technology, improves system reliability.
The Microcomputer Control Apparatus for Boiler of the present invention is an online process control equipment, and it comprises the Industrial Boiler that is used for 2t/h-60t/h and the control and the detection of other industrial process.Has processing capacities such as carrying out data acquisition, logic judgement, accurate Calculation automatically apace, thereby required various controls and calculation process in the production processes such as realization boiler operatiopn, and can revise according to production requirement at any time and regulate parameter to reach best control effect.The Microcomputer Control Apparatus for Boiler adopts dual-pc control system, and the main control microcomputer constitutes directly actuated closed-loop system, and the open cycle system that the control microcomputer composition data is handled is with the back-up system as closed-loop system.According to the needs of boiler actual motion, these two systems that can put into operation at the same time or separately control the operation of boiler.
Along with the continuous expansion of application and user's different demands, the boiler microcomputerized controller is transplanted on the industrial PC computer, it is big to make full use of its inner capacities, fast operation, advantages such as reliability and scalability are strong, Application and Development in earnest in addition, make control system that further in-depth and improvement arranged, and on image and keyboard applications horn of plenty and thorough change has been arranged more, has visuality attractive in appearance, three-dimensional innervation and simulation are strong, operation is abundant, characteristics such as easy to use are more conducive to the safety of on-the-spot proper operation and boiler and other industrial process, stable, economic operation.
Figure one is a boiler controlling device hardware configuration block diagram;
Figure two is boiler controlling device hardware configuration schematic diagrams;
Figure three is boiler controlling device software concrete operations flow charts;
Figure four is boiler controlling device software subdirectory use figure;
Figure five is boiler controlling device software general construction FB(flow block)s;
Figure six is boiler controlling device software function assembly schematic diagrams;
Figure seven is boiler controlling device boiler combustion device schematic diagrams.
Below in conjunction with accompanying drawing, be described in further detail:
Referring to figure one and figure two, hardware system is that original technology combines with the technology of oneself developing, and in conjunction with field demand, rationally prepares.Because specific project requires different, so the preparation of the hardware of the present invention (RTGW-10E) system is all different.
System is by the A/D device, convert the in-situ transducer signal to the value corresponding sign indicating number, convert actual quantities to through Computer Processing, select content displayed to be delivered to computer screen as normal displaying contents and other according to keyboard commands some signal of interests wherein then; And these actual amounts are carried out the timing storage also can print tabulation at any time.The site operation personnel can be to the monitoring of operation object detection with this.
In the project that with the boiler is the operation object, it is in the structural representation of Industrial Boiler, show that according to on-site parameters significance level shows one by one according to different character boundary, shades, make demonstration more attractive in appearance and very clear, steam drum water level circle is according to the corresponding change of real standard energy among the figure, the mode that the separate unit boiler control system is reported to the police and adopted color lump prompting and the instantaneous record of alarm condition literal to show, one second kind of parameter is once refreshable.
It is one of major function of the present invention that the major parameter of operation objects such as Industrial Boiler is directly controlled.The control parameter that system will gather enters the control corresponding loop, after carrying out a series of calculation process, produce corresponding output valve, be transported to all classes such as fire grate, feedwater, air-supply, air inducing executing agency by I/O or D/A conversion equipment, thereby reach the requirement of the production run that changes operation objects such as boiler, make the operation object be in optimal operational condition, produce to guarantee safety and stability.
Carry out data query and management such as economic magnitude, historical record, tendency chart in addition by keyboard operation, and be presented at screen or print, also can carry out PID and regulate parameter modification, change automatic controlling value, carry out a series of keypad functions such as soft manual operation function, all data input and output situations of inquiry system.Keyboard operation is in the mode of pop-up menu, only simple with →, ←, ↑, ↓, key and a spot of function key (Fn) get final product complete operation, each operation all has corresponding screen prompt, generally the fireman accepts.Boiler parameter value and economic magnitude can according to user's setting can be on time, class, day print.Figure three is seen in keyboard operation.
For guaranteeing when main control microcomputer breaks down, the operation object still can normally carry out, therefore used another set of microsystem (this microsystem is all separated with above-mentioned main control microcomputer system power supply and A/D), eight or 12 important parameters of operation object are carried out the LED data show, and have from warning function.The boiler attendance worker can carry out straighforward operation to conditioning equipment by operator, to guarantee the normal operation of operation objects such as boiler.
Referring to figure three:
1. under the inquiry Graphic State, print Query Result, as the historical trend curve, alarm history record, the long-pending result of economic magnitude etc.
2. the early, middle and late class of form in selective printing this sky under historical trend inquiry.
3. do not open or when carrying out other print out task, print result is temporary in the PRINT catalogue when printer.This order is the destination file deletion of printing catalogue PRINT with being temporary in.
4. revise the commuter time (promptly print class form time) under the print parameters menu, calculate coal quantitative determination coefficient, the coal lock aperture of coal consumption, timed print is provided with etc.
5. inquire about the economic magnitude accumulation results such as steam production, water consumption, coal consumption of certain chosen period.
6. inquire about 24 hours change curve of certain day certain signal parameter, and can amplify, datumization show to handle.
7. inquire about certain day alarm logging.
8. the hardware connection of inquiring about the sampled signal of this project is arranged, the sampling situation.
9. inquire about the wiring arrangement and the output valve situation of the DA and the hardware that I/O exports of this project.
The hardware environment for use of this apparatus system software is industry PC 286, PC386, PC486, also can be by adding and can be to use at the scene by plate on general PC.The version of software environment for use more than general west DOS3.0 can be carried out, and need not use WINDOWS and other any Chinese DOS.
The catalogue that has been a master catalogue and four that system is divided into.Performing a programme and font file are in master catalogue, and its subdirectory has the initialization data file INIT catalogue that has all systems soft wares; The image file PCX catalogue that has 16 look PCX forms of systems soft ware; There are historical data (* .DBF), economic magnitude data (* .DBF), and the DAT catalogue of the spanned file of alert data (* .ALM); There is the excessive temporary file of printing, so that system carries out spooled print and the PRINT catalogue of usefulness after possessing print conditions.Its use principle figure sees figure four.
System's display interface adopts the style of the window display system of imitative WINDOWS, directly gets Hanzi font library and carry out Chinese character demonstration and printing under general western language DOS.Like this 10E system the speed of service than WINDOWS and Chinese DOS under the operation faster, also low relatively to the requirement of hardware environment.
System's picture mainly is made up of five windows, below 3 windows be normal display window: control window, the color lump explanation frame, the keyboard prompting frame that promptly show the boiler important parameter.The dynamic window that in addition with good grounds keyboard commands change.
Simply paint system shows that drawing partial image file shows and system the draws a picture dual mode, the latter such as pop-up box, display lamp; And the former more complicated just shows and relatively takes time and just draw a picture, so mainly generate the PCX file by " paintbrush " of WINDOWS Chinese information processing system, forms by the SHOW16 program display in soft year of 10E system.
Keyboard commands adopt the mode that menu is selected and shortcut combines, and all there is corresponding prompting in per basically step, many operations, and such as control loop automatic switchover, soft manual operation etc., all comparison image is simple.
This software program is all with Borland C and C Plus Plus establishment.The overall mode that adopts multitask height and time interruption to combine.Total in task altitude module utilization:
1, the Refresh Data module mainly comprises data transaction and storage, reports to the police and handles and control loop calculating.
2, display module refreshes data and the image demonstration on all screens.
3, the accumulation of statistical module economic magnitude is calculated.
4, print module managing printing buffering area carries out spooled print.
5, the menu input module comprises that handling menu shows, selects, and input information is handled.
6, graphical management module to the demonstration of figure, switch and manage, and the input of the keyboard under certain width of cloth figure makes an explanation and handles.
The priority of these tasks reduces according to above order, and high-priority task can be hung up low priority task and preferentially move.After treating that this task is finished, again the task right of execution is met at former task.Each task can be switched between idle, ready and running status.The switching of these multitasks is to be finished in application inside by one section kernel code, and not by means of operating system, this is in order to make single task operating system software environment such as should can adapting to DOS with software.
In addition important process such as the A/D signals collecting of system and D/A and I/O output the time kind finish interruption frequency about second 18 times, the real-time of assurance system operation in interrupting.
Referring to figure five:
A distinguishing feature of this apparatus system software is to have stronger combination ability, and the product versatility degree is than higher.Basically to the boiler in the 0-75t/h, as long as revise corresponding data file and image file, and need not revise performing a programme, can generate the boiler control system software systems that are adapted to different user, different control content.Basic skills is roughly as follows---
System is decomposed into some modules or is called parts according to difference in functionality, utilizes the data file Chinese character of text formatting to describe the user's patent system that generates the required specific function class of user then, and graphic file is also made corresponding modification as required.Concrete steps comprise:
(1) demonstration that system is useful on, control, printing, business accounting and other title are described at relevant initialization files, these file * .DAT that are used to describe 10E private subscribers systemic-function and module assembling adopt text formatting, be stored among the subdirectory INIT, generally started and call during the display frame change in system by program.
(2) automatic control module is made up.System is divided into different control type according to different control methods with requirement with control loop, and with this type as a module or parts, by it controls type, loop name, controlled analog quantity name, output analog quantity name, input condition (at first dropping into loop name, the loop of throwing input simultaneously name, series connection prime loop name) with definition among the text data file CIR.DAT, related contents such as initial definite value, when system moved, packing into automatically, this had the concrete control loop of type characteristic.Adjust through pid parameter, after drop in this loop,, controlled analog quantity is controlled on the required definite value of user by the relevant output of continuous adjustment analog quantity (as valve position, motor speed).
(3) figure that desire is shown is registered assembly.Image frame number, type, corresponding image file name and the Data Filename of all assembly of feature project system registered by system at the PICS.DAT file.Figuratively speaking, PICS.DAT provides the parts of system's picture assembly, and the part of each parts is described assembly in the corresponding data file of registration.
(4) according to A/D sampling and D/A, I/O input and output rank file, systems soft ware is sought input and output hardware ports such as each supplemental characteristic collection automatically.Each user is according to the actual operating position of oneself, and test point and computer control output point that projects require are all different.But as long as by ADLIST.DAT and OUTLIST.DAT data file under the INIT subdirectory, wiring situation to each on-site parameters of hardware input/output port that mutually should the project preparation is added on description, systems soft ware is just described this as agreement, and the output of gathering other analog quantity, switching value on certain hardware interface is a certain parameter of agreement.These parameter names are registered in the analog quantity description document already.Systems soft ware also carries out according to the agreement among ADLIST.DAT and the OUTLIST.DAT just in the data interchange of all now being raised parameter.
(5) in addition, system is according to all specified parameter names of analog quantity description document ANALOG.DAT and cumulant description document STATIST.DAT, the automatic class of generation report printing form when program brings into operation, system history data, economic cumulant storage content format also generate automatically.Also have, executive software is by specifying the meter type of each on-site parameters at the ANALOG.DAT file, program will be discerned its conversion type (signal of telecommunication is scaled the type of actual amount), carry out work such as each corresponding line style conversion, linear fit, the compensation of flow evolution automatically.
RTGW-10E stores with foxBase, foxPro database file form in the data file of DATA subdirectory.Independence with data is convenient to characteristics such as data management such as preservation also can be tabulated, inquiry, and need not be relied on native system under foxBase and foxPro environment.
Referring to figure seven, has the vapour pressure automatic adjustment circuit, steam flow automatic adjustment circuit, oxygen amount automatic adjustment circuit according to boiler combustion operation needs, more than each regulating loop all adopt the output of switching value or analog signals, regulate automatically with the corresponding executing agency of direct control and respectively control parameter.
Claims (2)
1, a kind of boiler controlling device of CRT display screen comprises:
(1) input keyboard;
(2) be used for gathering in real time and show the central working parameters device of boiler operatiopn;
(3) be used for controlling in real time the industrial boiler operation device;
(4) be used for certain hour print record boiler operatiopn historical situation device at interval.
It is characterized in that this boiler controlling device also comprises:
(5) adopt big capacity hard disk historgraphic data recording equipment, be used to store historical records long-time, the short whole sampled points of boiler at interval, alarm logging and economic statistics amount, and can carry out inquiry unit at any time easily;
(6) regulated by keyboard input, the device that the boiler combustion working condition is controlled automatically;
(7) regulated by keyboard input, the device that boiler feedwater equipment is controlled automatically;
(8) regulated by keyboard input, the device that boiler air inducing equipment is controlled automatically;
(9) regulated by the keyboard input, to the pressure of oxygen-eliminating device, the device that liquid level is controlled automatically;
(10) boiler warning device, this installs the boiler operatiopn abnormal conditions, carries out Chinese speech and reports to the police.
2, a kind of method of boiler controlling device of CRT display screen is utilized the PID control principle, through sampling, computing, output several steps the boiler industrial process is made SERVO CONTROL, it is characterized in that adopting the following step:
(1) in the external storage that deposits the boiler SERVO CONTROL common software desiring to execute the task and configuration data in this computer system;
(2) start this computer operation, at first loading of operating system and general boiler control software read in during software initialization with the corresponding configuration file of concrete steam generator system, thereby constitute the automatic control system that adapts with this steam generator system;
(3) sampling subsystem, regularly the sampled point to the boiler working condition follows back sampling, and the signal that instrument is exported carries out A/D conversion and a series of data transaction work;
(4) display subsystem regularly shows the data that collected, and display mode adopts various ways such as character string, block diagram, trend curve, simulated pointer formula gauge outfit, and adopts abundant colors to represent according to different situations such as whether report to the police;
(5) database subsystem writes down each sampling number certificate with the database file form at interval with certain hour automatically, constitutes historical data base, and data file is compatible mutually with the dBase groupware commonly used, and the inquiry of support historical data base and duplicating;
(6) autonomous control subsystem, time pin call specific control algolithm and carry out computing dissimilar automatic control loops, calculate output valve and are responsible for outputing to executing agency and move;
(7) man machine interface subsystem, adopt the graphical user interface technology of international popular, and adopt methods such as full-localized window type Display Technique and online help to improve user's operating characteristics, functions such as online modification sampled point range, control loop parameter are provided, support pull-down menu keyboard and input methods such as movable-frame hives;
(8) printer subsystem can the history of printing data, tendency chart, and teams and groups' form adopts the spooled print technology, improves system reliability.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95111747 CN1127863A (en) | 1995-09-04 | 1995-09-04 | Microcomputer controlled device and method for boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95111747 CN1127863A (en) | 1995-09-04 | 1995-09-04 | Microcomputer controlled device and method for boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1127863A true CN1127863A (en) | 1996-07-31 |
Family
ID=5078998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95111747 Pending CN1127863A (en) | 1995-09-04 | 1995-09-04 | Microcomputer controlled device and method for boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1127863A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101334172B (en) * | 2008-07-28 | 2010-06-16 | 柴庆宣 | Middle powder storage house type pulverized coal boiler draft air intelligent control method |
| CN1619447B (en) * | 2003-07-30 | 2010-09-29 | 费舍-柔斯芒特系统股份有限公司 | Economic calculation in process control system |
| CN102720551A (en) * | 2012-07-02 | 2012-10-10 | 上海汽轮机厂有限公司 | Control method for steam thermal system with dual-machine backheating steam extraction |
| CN106195989A (en) * | 2016-08-25 | 2016-12-07 | 梧州市自动化技术研究开发院 | A kind of boiler controlling method |
| CN106287643A (en) * | 2016-08-25 | 2017-01-04 | 梧州市自动化技术研究开发院 | A kind of boiler control system |
-
1995
- 1995-09-04 CN CN 95111747 patent/CN1127863A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1619447B (en) * | 2003-07-30 | 2010-09-29 | 费舍-柔斯芒特系统股份有限公司 | Economic calculation in process control system |
| CN101334172B (en) * | 2008-07-28 | 2010-06-16 | 柴庆宣 | Middle powder storage house type pulverized coal boiler draft air intelligent control method |
| CN102720551A (en) * | 2012-07-02 | 2012-10-10 | 上海汽轮机厂有限公司 | Control method for steam thermal system with dual-machine backheating steam extraction |
| CN102720551B (en) * | 2012-07-02 | 2014-10-08 | 上海汽轮机厂有限公司 | Control method for steam thermal system with dual-machine backheating steam extraction |
| CN106195989A (en) * | 2016-08-25 | 2016-12-07 | 梧州市自动化技术研究开发院 | A kind of boiler controlling method |
| CN106287643A (en) * | 2016-08-25 | 2017-01-04 | 梧州市自动化技术研究开发院 | A kind of boiler control system |
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