CN105425734A - Automatic control system of plasterboard production system - Google Patents
Automatic control system of plasterboard production system Download PDFInfo
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- CN105425734A CN105425734A CN201410469717.0A CN201410469717A CN105425734A CN 105425734 A CN105425734 A CN 105425734A CN 201410469717 A CN201410469717 A CN 201410469717A CN 105425734 A CN105425734 A CN 105425734A
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Abstract
Provided is an automatic control system of a plasterboard production system. The plasterboard production system includes an original heat system, an ingredient system, a drying system and a packaging system. The automatic control system includes a host computer, a control device of the original heat system, a control device of the ingredient system, and a control device of the packaging system. The host computer is connected to the control devices of the three systems through industrial Ethernet or buses to form a closed ring network structure. A temperature sensor utilized by the drying system serves as a control point for the control device of the original heat system, and the temperature inside a drying machine is controlled by the control device of the original heat system. The control device of the original heat system transmits collected information about the temperature inside the drying machine to a touch screen of the packaging system through a bus and enables the information to be displayed on the touch screen. A control system of the drying machine is not adopted, the control design by the drying machine is completed by the original heat system, but a control interface of the drying machine is positioned in the packaging system. In this way, the control system is simplified, and the cost is reduced.
Description
Technical field
Relate to industrial control field, specifically a kind of automatic control system of production system in gypsum board production line.
Background technology
Along with the development of direct data control (DDC), 1966, DDC system is used to the production control of cement industry, it uses computing machine to replace conventional regulation meter composition computer control system, owing to working as the expensive of computer-chronograph, can only control with a computing machine, correspondingly danger be put together, be difficult to meet production actual demand.20 century 70s, along with further developing of microelectric technique, the price of microprocessor constantly declines, and is proposed again the dcs (DCS) based on microcomputer.It is a kind of that controlling functions is decentralized, and supervisor operates the control system of centralization, i.e. so-called Distributed Control System (DCS).The distribute control stage is with the decentralised control of computing machine and manage concentratedly as technical characteristic.Distributed Control System (DCS) is concentrated distributed control system based on microprocessor, is control, communication, computing machine, the product that screen display technology combines.Be core with microprocessor, by microcomputer, industrial control computer, PLC programmable controller, data channel, CRT shows operating system, process channel, analog regulation instrument etc. and organically combines, and constitutes a brand-new control system.Principal feature:
1, real decentralised control is achieved.Within the system,
2, data channel is utilized to realize Comprehensive Control.
3, CRT operator's console is utilized to realize centralized watch and operation
4, supervisory control computer is utilized to realize optimum control and management.
Ethernet is LAN (Local Area Network) relatively early, is also current popular LAN (Local Area Network).It is different that industrial communication and the communication under working environment have fundamentally, a lot of for connecting a station server under working environment, not cross connection between user, this data transmission is when establishing a communications link, multiple user simultaneously connection server may cause time delay or obstruction, can not be used for automatic control.
Industrial network must reflect flexibly and can meet control overflow at short notice, must guarantee network capacity and use its machinery and equipment to greatest extent, will reduce to minimum stop time.All production and administration processes must be interactive.
Industrial Ethernet equipment is different from business ethernet device, and its feature is:
Existing gypsum board production line is mostly adopt manual technical solution problem, although distributed computer control DCS and Ethernet etc. occur already, but for concrete gypsum board manufacture system, how adaptation automatic control system is set, how subsystem arranges control device, how the reference mark in production system, operating point are assigned to the control device of appropriate system, with simplified control system, to reduce costs be the problem needing to solve.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of automatic control system of gypsum board manufacture system,
A kind of automatic control system of gypsum board manufacture system, described gypsum board manufacture system comprises former hot systems, feed proportioning system, drying system, packaging system, described automatic control system comprises: host computer, the control device of former hot systems, the control device of feed proportioning system, the control device of packaging system, host computer is connected with the control device of described three systems by Industrial Ethernet or bus, composition closed hoop web frame;
The temperature sensor used by described drying system, as the reference mark under the control device of described former hot systems, controls the temperature in described dryer by the control device of described former hot systems;
Temperature information in the described dryer gathered is sent to the touch screen display of described packaging system by the control device of described former hot systems by described bus.
Eliminate the control system of dryer, the control design case of dryer is completed by former hot systems, but its control inerface is positioned at packaging system, simplify control system, reduce cost.
Alternatively, the recircilated air intake place that the temperature sensor that described drying system uses comprises described dryer arranges the first temperature sensor, for detecting the temperature at recircilated air intake place; The circulating air exit of described dryer arranges the second temperature sensor, for detecting the temperature in circulating air exit; Described first temperature sensor, the second temperature sensor are connected by cable or bus with the control device of described former hot systems, temperature signal are converted to the control device that electric signal sends described former hot systems to.
Alternatively, in described dryer, heat-conducting oil pipes arranges control valve, described control valve is connected with described former hot systems control device; Arrange drain tap in described dryer, described drain tap is connected with described former hot systems control device; Described former hot systems control device regulates the temperature in described dryer by the aperture of the drain tap controlling control valve in described dryer on heat-conducting oil pipes or described dryer inner.
Alternatively, described former hot systems arranges touch-screen, by fieldbus and described former hot systems control device mutual; Described feed proportioning system arranges touch-screen, by fieldbus and described feed proportioning system control device interaction data; The touch-screen of described packaging system and the control device of described packaging system are by fieldbus interaction data.
Alternatively, described packaging system also comprises optoelectronic switch, first frequency converter, the first motor be connected with frequency converter, described optoelectronic switch connects packaging system control device, described packaging system control device also with the first frequency converter is connected, and for controlling the first frequency converter, described first frequency converter rotates for driving described first motor; Described first motor has been used for ejecting plate;
Described packaging system also comprises the second frequency converter, the second motor be connected with the second frequency converter, and described packaging system control device is connected with the second frequency converter, and for controlling the second frequency converter, described second frequency converter rotates for driving described second motor; Described second motor has been used for stacking.
Accompanying drawing explanation
Fig. 1 is the overall system architecture schematic diagram of the application.
Fig. 2 is after the control system of cancellation drying system, and when adopting bus to connect, the temperature of dryer part controls and the schematic diagram shown.
Embodiment
Below in conjunction with drawings and Examples, technical scheme of the present invention is described in detail.
It should be noted that, if do not conflicted, each feature in the embodiment of the present invention and embodiment can be combined with each other, all within protection scope of the present invention.In addition, although show logical order in flow charts, in some cases, can be different from the step shown or described by order execution herein.
Fig. 1 is the overall system architecture schematic diagram of the application.
A kind of automatic control system of gypsum board manufacture system, described gypsum board manufacture system comprises former hot systems, feed proportioning system, drying system, packaging system, described automatic control system comprises: host computer 0, the control device 1 of former hot systems, the control device 2 of feed proportioning system, the control device 3 of packaging system, host computer is connected with the control device of described three systems by bus 4, composition closed hoop web frame;
The temperature sensor used by described drying system 5, as the reference mark under the control device 1 of described former hot systems, controls the temperature in described dryer by the control device 1 of described former hot systems;
Display on temperature information in the described dryer gathered is sent to described packaging system by the control device of described former hot systems touch-screen 31 by described bus 4.
Eliminate the control system of dryer, the control device of the control design case of dryer by former hot systems is completed, but its control inerface is positioned at packaging system, simplifies control system, reduce cost.
The appearance of field bus technique, makes industrial control system to decentralized, networking, and intelligent direction develops.Field bus Monitoring System, field bus control system is compared with the structure of traditional control system, simulating signal is replaced owing to adopting digital signal, thus can realize a pair electric wire transmitting multiple signal (comprising multiple operational parameter value, multiple equipment state, failure message etc.), simultaneously again for multiple equipment provides power supply; Analog/digital or digital-to-analog converting member is no longer needed beyond field apparatus.This, simplifies system architecture, save hardware device, save cable and various installation.
DeviceNet is a kind of Low-cost Field bus standard based on CAN developed by Rockwell Corporation of the U.S..This is a low side network system, its effect be simple commercial unit (as limit switch, photoelectric sensor, valve group, motor starter, variable frequency drives etc.) with realize network between high-end devices (controller) and be connected.
DeviceNet turn increases object-oriented, based on the modern communication technology theory connected, and develops application layer on the basis of CAN, the dispersing apparatus of industry spot is connected into an opening, cheapness, reliably industrial control network.It passes through a cable by such as programmable controller, sensor, optoelectronic switch, motor, the field intelligent devices such as frequency converter couple together, and are that dcs reduces on-the-spot I/O interface and wiring quantity, ideal solution controlling functions being downloaded to field apparatus.
DeviceNET fieldbus is as a kind of opening, the Networking Solutions & provisioned of low cost, by PC application, temperature sensor, frequency converter on each node, couple together Deng field apparatus, decrease I/O interface and wiring quantity, achieve networking and the telemanagement of commercial unit, compared with other fieldbus, it also has high reliability, dirigibility and real-time
Its network maximumly can reach 64 node addresss, each node does not limit to the I/O supported, each node device can unify distribution by network, signal wire and power lead are all in main line, (be generally 5 lines in cable, two power leads, voltage difference is 24V, two signal wires, a shielding line); Support gating, poll, circulation, the data transfer mode of state change and applications trigger; Support point-to-point, many main or master-slave communication mechanisms; Etc..
Man-machine interface (HumanMachineInterface, HMI) product, often be known as " touch-screen ", comprise HMI hardware and corresponding special picture configuration software, generally, the HMI hardware of different manufacturers uses different picture editing's software, and the major equipment kind of connection is PLC.
Touch-screen is that user utilizes finger or other media are direct and screen contact, carries out information selection, to a kind of input equipment of computer input information.In factory or workshop, touch-screen is first-selected interfacing equipment, because its strong adaptability, so than keyboard, mouse etc. more have superiority.Be easy to use, be easy to grasp, ground operating troubles rate, and under rugged environment, such as dust, greasy dirt, wearing and tearing, scuffing waits and it all can not be made to damage, and therefore, plays effect very well in the industry.
Eview touch-screen can be desirable, the data message on lively display PLC.Screen from 3.7in to 10.4in, from monochrome to colour, from touch-screen to display text, widespread use.Its function be connected with fieldbus in addition.
Interface on touch-screen generally comprises: for connecting the socket of power supply; For connecting the RS-232 cable interface of PC, for connecting the RS-485 cable socket of PLC.For arranging the thumb-acting switch of the initial modes entered of starting shooting;
During installation, touch-screen can be arranged on the control box that the degree of depth reaches 4in (105mm), can install on the front panel of metal shell.Each limit will retain the space of 25mm so that install gib screw, after also to retain suitable space.In order to avoid extruded cable line.In general, the distance of 105mm is retained in the behind of panel.
This automatic control system adopts ethernet ring network structure,
Loop configuration is a kind of network topology form in Industrial Ethernet, and the I/O of head and the tail two switches in linear structure links together with cable by again, and therefore, it is a kind of special shape of linear structure.Compared with linear structure, the advantage of ring type structure is the reliability and the survivability that improve network, namely has the detecting and locating carrying out fault, the ability of energy automatic fault tolerant after discovery fault.If in network system, there is a link occurs fault, by having switch or the repeater of failover capability, an other available link can be found for the network equipment, communication is recovered again.
Be divided into former heat, batching, drying and packaging three systems.System architecture as shown in Figure 1.Comparatively 30,000,000 square meter models reduce by two systems.
This automatic control system can be applied to the production line of annual output 2000 ten thousand square meter gypsum board line or other types.
To produce 2000 ten thousand square meter gypsum board line citings per year,
Owing to producing the minimizing that 2,000 ten thousand square meter gypsum board line control to count per year, therefore overall control just can be completed by the control device of three systems.In the present system, supervision and part adjustment is carried out mainly through the overall operation situation of Central Control Room to system, each system then can equipment in monitoring and controlling native system, wherein consider the position of dryer, although the control design case of dryer is completed by former hot systems, its control inerface is positioned at packaging and drying system.The temperature of drying system controls also to be completed by former hot systems, and by reading the temperature data of point for measuring temperature, the aperture of by-pass valve control, baffle plate etc., realizes the control to dryer temperature.Generally speaking, former hot systems mainly completes and controls the temperature of gypsum board production line.
Modern central control room is the key component of the maincenter of whole production process, Shi Quan factory, in Central Control Room, whole production process parameters, machine operation etc. can be reflected rapidly comprehensively by technology such as computing machines.Realize controlling in time, accurately to procedure parameter.
Central Control Room is provided with excellent air-conditioning equipment, and to keep suitable temperature and humidity, indoor lighting conditions will be convenient to reading instrument numerical value, and do not hinder the good visual to luminous signal, CRT picture and television image, illumination is chosen as 300 ~ 500lx.
The power supply of Central Control Room is first order load, adopts three-phase four-wire system, requires independent grounding.Central Control Room ground adopts antistatic raised floor.Be provided with fire equipment.
Fig. 2 is for after cancellation drying system, and when adopting bus to connect, the temperature of dryer part controls and the system diagram shown.
Alternatively, the temperature sensor that described drying system 5 uses comprises:
The recircilated air intake place of described dryer arranges the first temperature sensor 51, for detecting the temperature at recircilated air intake place; The circulating air exit of described dryer arranges the second temperature sensor 52, for detecting the temperature in circulating air exit; Described first temperature sensor 51, second temperature sensor 52 is connected by cable or bus with the control device 1 of described former hot systems, temperature signal is converted to the control device 1 that electric signal sends described former hot systems to.
Alternatively, in described dryer, heat-conducting oil pipes arranges control valve 53, described control valve 53 is connected with described former hot systems control device 1; Arrange drain tap 54 in described dryer, described drain tap 54 is connected with described former hot systems control device 1; Described former hot systems control device 1 regulates the temperature in described dryer by the aperture of the drain tap controlling control valve in described dryer on heat-conducting oil pipes or described dryer inner.
Described first temperature sensor 51, second temperature sensor 52 is connected with described packaging system touch-screen by DeviceNET bus.
The output terminal of described first temperature sensor 51, second temperature sensor 52 is connected by control cables with the control device of described former hot systems, and control cables adopts twisted-pair feeder to add shielding line structure.If do not adopt bus, directly by controlling cable, also claiming wire, signal wire, temperature sensor output terminal is connected with control device, because transmit simulating signal, in order to prevent interference, so install shielding line additional.
Described first temperature sensor 51, second temperature sensor 52 is connected by fieldbus DeviceNET with described former hot systems control device.
Measurement for air themperature also can use thermal resistance, or thermopair, the temperature signal recorded is changed into the control device of electric signal transmission to drying system outside.Comprise the control device of former hot systems and the control device of packaging system.
In current gypsum production technology, drying is an important ring, and gypsum drying equipment, can be dryer, or dry kiln, and its principle is utilize the moisture in the air evaporation plasterboard of heat.Free moisture slow evaporation in plasterboard, but can not water of crystallization be destroyed, when plasterboard goes out dryer, water percentage is generally not more than 1%.
Dry kiln is divided into three districts, each district all by conduction oil through heat exchanger heats circulating air, then in dry kiln, evaporated the moisture in plasterboard by circulating air.
The thermal source of dryer is conduction oil, and conduction oil is heated in hot oil furnace.Heat-conducting oil furnace its be for fuel with coal, oil, gas, take conduction oil as the thermal energy equipment of circulatory mediator heat supply, heat-conducting oil furnace refers to that heat-carrying working medium is the thermal energy conversion equipment of high temperature heat conductive oil (also claiming coal heating, thermal barrier), heat-conducting oil furnace, in use industry, is mainly used in crude oil, the heating of rock gas and the processing, storage, transport etc. of mineral oil.Refinery utilizes conduction oil preheating cold material, and has been successfully used to the heating of solvent and extractant vaporising device in lubricating oil manufacture process.Owing to utilizing heat-conducting oil heating and the advantage such as utilize existing homogeneous heating compared with Steam Heating, simple to operate, safety and environmental protection, economize energy, temperature-controlled precision are high, on-stream pressure is low, be widely used by as heat transfer medium in modern industry is produced.
The inside of dryer comprises heat interchanger, the in-line be connected with heat interchanger, outlet line, after the conduction oil of high temperature enters heat interchanger from in-line, with heat interchanger generation heat interchange, then flows out from outlet line.Deep fat is after heat interchanger, and heat interchanger ambient air is heated, and then air is blown to by blower fan the drying that plasterboard carries out plasterboard, carrys out controlled circulation air heat temperature by the flow of conduction oil,
Control valve 53 is arranged on the return line of heat exchanger, and control valve 53 can control the flow of the deep fat in hot oil pipeline, thus reaches the object regulating circulating air temperature.
Ethernet industrial protocol (Ethernet/IP) is a kind of industrial networking standard of opening, and it supports dominant and recessive message, and uses commercial Ethernet chip topological structure popular at present, and one group of device is connected to switch point-to-pointly.
Ethernet/IP can be used in processing much data in enormous quantities of often wrapping 1500 bytes, and it forecasting mode can manage data in enormous quantities.Ethernet technology is fast-developing, and cost is also in rapid decline, and thus Ethernet/IP obtains and applies more and more widely.
Most of Field bus Monitoring System adopts configuration software set up and run Field bus Monitoring System.
Configuration software refer to some can fast configuration, there is data acquisition, communication and the specical software system of process control function, be software platform and the development environment of automatic control system supervisory layers one-level, can be the industry of user's rapid build and provide systemic-function with the automatic control system of civil engineering.Before configuration software occurs, realize a certain task, be all must by coding (as BASIC, C, Fortran etc.) realize, not only workload is large, the cycle is long for coding, and once industry and Engineering Control object slightly change, the source program of system must be revised.The appearance of configuration software, thoroughly solves the problem of a large amount of amendment source code, for the work on the spot of past some months, within several days, just can be realized by configuration programming by configuration software.
General touch-screen product can carry hardware and the configuration software of man-machine interaction.
The process being controlled dryer temperature by hot systems is:
At the entrance of dryer, thermopair is arranged in outlet, for detecting the temperature in of circulating air, outlet temperature.After temperature signal is converted to electric signal by thermopair, by bus DeviceNET, by Signal transmissions to other nodes in bus, the control device of such as packaging system, with the touch-screen of packaging system, or the control device 1 of former hot systems.
The control device 1 of former hot systems, after computing, send control signal, be connected with control valve 53 by bus, variable valve can be electric butterfly valve, by controlling the unlatching of electric butterfly valve, closing or partly opening the deep fat amount regulated in oil circuit, thus reaching the object of the temperature regulating circulating air.
If do not adopt bus communication, described control valve 53 is connected by control cables with described control device, and the signal output part of described control valve 53 is connected with the input end of analog signal of described control device.Described cable adopts twisted-pair feeder to add the structure of shielding line.
Another kind of mode, described control valve is connected by fieldbus DeviceNET with described control device.
Arrange drain tap 54 in described dryer, described drain tap 54 is connected with described former hot systems control device 1.
Described drain tap 54 is connected by control cables with described control device 1, and the signal output part of described drain tap 54 is connected with the input end of analog signal of described control device 1.
Described control cable adopts twisted-pair feeder to add the structure of shielding line.
The cross-sectional area scope of described control cable is 0.3 ~ 0.75 square millimeter.
If adopt the type of attachment of bus, so described drain tap 54 is connected by fieldbus DeviceNET with described control device.
Drain tap 54 can be electric butterfly valve.
The control device of former hot systems also can control vent valve to regulate temperature.
The operation program of former hot systems control device inside adopts PID arithmetic program, and PID arithmetic is existing technology, no longer goes to live in the household of one's in-laws on getting married and chats.
Deep fat variable valve or the emptying valve of air can select electric butterfly valve.
Conventional electric butterfly valve has wafer type electric butterfly valve and flange form electric butterfly valve two kinds.Wafer type electric butterfly valve is connected between two pipe flanges with stud bolt by valve, and flange form electric butterfly valve is with flange on valve, with bolt by two ends Flange joint on valve on pipe flange.
Electric butterfly valve, comprises butterfly valve and actuator, and butterfly valve structure is simple, volume is little, lightweight, is only made up of a few parts.And only need half-twist to get final product fast opening and closing, simple to operate, this valve has good fluid handling properties simultaneously.
Working power has usually: AC220V, AC380V etc.Input signal: 4 ~ 20mA, the weak electric signals such as 0 ~ 10v.Be connected after debugging well by regulated electric actuating mechanism with valve rod; Drive hard seal butterfly valve valve plate using electric energy as driving force, do 0 ~ 90 ° of part gyration.4 ~ 20mA the signal receiving industrial automation control system carrys out precision control valve door aperture, thus reaches the regulation and control of the different technical parameters such as flow, temperature, pressure.
Described former hot systems arranges touch-screen, by DeviceNET fieldbus and described control device mutual; Described feed proportioning system arranges touch-screen, by DeviceNET fieldbus and described feed proportioning system control device mutual.
At the control device touch-screen of packaging system, recircilated air intake temperature and the outlet temperature of dryer can be shown.
Alternatively, described packaging system also comprises optoelectronic switch, first frequency converter, the first motor be connected with frequency converter, described optoelectronic switch connects packaging system control device, described packaging system control device also with the first frequency converter is connected, and for controlling the first frequency converter, described first frequency converter rotates for driving described first motor; Described first motor has been used for ejecting plate;
Described packaging system also comprises the second frequency converter, the second motor be connected with the second frequency converter, and described packaging system control device is connected with the second frequency converter, and for controlling the second frequency converter, described second frequency converter rotates for driving described second motor; Described second motor has been used for stacking.
Packaging system mainly realizes some simple logic controls of dryer ejecting plate and packaging.What dryer ejecting plate process patrolled and examined each layer by photoelectricity goes out partitioned signal, and determines that upper one goes out flaggy not at chain conditions such as ejecting plates, completes the control of ejecting plate process.Packaging system, mainly according to photosignal, according to technological requirement, completes edges of boards cutting, the steps such as piling bed selection.
Optoelectronic switch, is also called Poul Dorset Sheep and gauge tap.Utilize material covering light beam, the effects such as absorption or reflection, detect the position, shape, mark, symbol etc. of object.
The noncontact of optoelectronic switch energy, detect various solid, liquid, the transparent body, smog etc. with no damage.The advantages such as volume is little, function is many, the life-span is long, low in energy consumption, precision is high, fast response time, detecting distance are far away and anti-light, electric and magnetic interference performance is good.To be widely used in various production equipment, as object detection, Stroke Control, product counting, speed monitoring etc., becoming the critical elements of automatic control system and production line.
As a kind of emerging gauge tap, in optoelectronic switch, the most important thing is photoelectric device, the change of illumination power is converted into the senser element of electric signal.Photoelectric device mainly contains light emitting diode, photoresistance, phototransistor, photoelectrical coupler etc., they constitutes the sensor-based system of optoelectronic switch.
The model of optoelectronic switch is a lot of in the market, but function is substantially identical.
The process of gypsum board discharging is:
Photoswitc detected plasterboard near or through out-of-date, it can send digital signal to packaging system control device 3, namely high level or low level carry out notification package assembling system control device 3 has plasterboard to go out, and connected mode is the digital module input end of the digital output end connection control device 3 of optoelectronic switch; After packaging system control device 3 receives message, whether recycling program computation allows gypsum board discharging, if allowed, then the digital output module of control device sends digital signal, and namely high level or low level or a series of pulse signal provide board motor, go out after board motor receives digital signal and rotate, plasterboard is on belt, or on some roller-ways, the operation of ejecting plate driven by motor belt or roller-way rotate thus complete plasterboard and leave outlet, fall into outside piling bed.
The process of the selection of gypsum board discharging piling bed is:
The outlet of dryer is set to hierarchy, and each layer is distributed in above-below direction, when plasterboard goes out dryer, and ejecting plate successively from the bottom up.Particularly, the plasterboard of the bottom first goes out, and drops on piling bed, and then, the plasterboard of last layer goes out again, automatically drops on the first block gypsum plate; Going out again of third layer, by that analogy.When the plasterboard on first piling bed falls full, dryer stops ejecting plate, and its outlet is under the dragging of motor, and clockwise or be rotated counterclockwise an angle, another piling bed is aimed in its outlet, then continues ejecting plate.Its dragging motor can select stepper motor or servomotor, when motor receives the pulse signal that control device sends, will rotate an angle thus complete the selection of piling bed.And pulse signal can regard on-off model as.
Or by frequency converter 32, referred to here as stacking frequency converter, control device output pulse signal is to stacking frequency converter, and the power output end of frequency converter 32 is connected with the power input piling motor 33, realize controlling it.
Can find out that control device controls the process of ejecting plate, mainly use the output of switching value, namely control electric machine rotation with the output of pulse or low and high level and come.
The lead-out terminal of the digital signal output modules of packaging section control device is connected with the digital input end of stacking frequency converter 32, the power input of stacking frequency converter connects electrical network, the power output end of stacking frequency converter connects stacking motor, moves for controlling stacking motor 33.
Above-mentioned control device and optoelectronic switch, control device and the connection going out board motor, can adopt control cable to be directly connected, also can adopt fieldbus DeviceNET.
Also have touch-screen in addition, one of its function of touch-screen of packaging section is the temperature in of the circulating air showing dryer inner, outlet temperature, and the parameter can revising temperature on screen.
Plasterboard is after dryer ejecting plate, quality inspection personnel can carry out quality check to plasterboard, wherein a content is the temperature of plasterboard, during the value that is above standard when finding the too high or too low for temperature of plasterboard, the operator of quality inspection personnel or packaging system directly can check the temperature parameter in dryer by the touch-screen of packaging system, comprise dryer cycle inlet air temp, circulating air outlet temperature, this greatly facilitates the reason that quality inspection personnel judges the temperature exceeding standard of plasterboard, improves the origination point of technologist's discriminatory analysis fault.If because the reason of dryer, the temperature parameter that the operator of quality inspection personnel or packaging section just directly can revise dryer on the touchscreen controls.
Amendment parameter controls the process of dryer temperature:
The dialog box of the upper temperature parameter of operating personnel's point touching screen, direct logarithm value is modified,
Parameter information is sent to former hot systems control device by bus DeviceNET by touch-screen, former hot systems control device sends instruction to the conduction oil control valve in dryer or drain tap, make it open, close, or open to some extent, thus regulate the temperature of dryer inner circulating air, and then have adjusted the temperature of plasterboard in dryer.
Hot systems control device also can be connected by DeviceNET bus with the conduction oil valve in dryer or drain tap.Or the analog output of control device is directly connected with the analog input end of conduction oil valve or vent valve.
The communication setting process in early stage of frequency converter and bus DeviceNET, such as baud rate is set, parity checkings etc. belong to prior art, do not discuss in detail, the communication setting process of control device and DeviceNET, such as arranges baud rate, parity checkings etc. belong to prior art, do not discuss in detail, have employed DeviceNET bus and carry out communication, have a lot of advantages.
Produce per year the technical essential of the control system of 2,000 ten thousand square meter plasterboards and innovative point mainly contain following some:
1, system adopts ethernet ring network structure, is divided into former heat, batching, packaging three systems.Comparatively 30,000,000 square meter models reduce by two systems.
2, the temperature control design of drying system has been come by former hot systems, can reduce by a control station like this, transfers to temperature control design to be all that temperature controlled former hot systems completes also is comparatively rational simultaneously.Consider the position of dryer and the requirement of the examination and test of products, by temperature controlled display and operation, be placed on the touch-screen of packaging section, facilitate operated by personnel.The ejecting plate of dryer has then been controlled by packaging system.
3, overall control has been come by three control device.Compare 30,000,000 square meter models, control system equipment less investment, cost of investment reduces, simultaneously, control variable of the same type belongs to same control device substantially, former hot systems mainly realizes temperature and controls, and feed proportioning system mainly realizes the control of motor, and packaging section mainly realizes the control of switching value and motor.
4, all systems do not establish operator's console, all have E-VIEW touch-screen.Operation interface is connected by ethernet ring network with host computer.Do not establish operator's console, decrease operator's console taking for space on the one hand, compare the loaded down with trivial details numerous buttons of operator's console on the other hand, by the virtual key in operation screen and dummy keyboard, can be more directly perceived also more easy realize operating function, check the data of current device, checkout facility operation conditions.
The control technology of above-mentioned annual output 2000 ten thousand square meter plasterboard is applicable to middle-size and small-size gypsum board production line, compare large-scale gypsum board production line, control system investment reduces, control effects promotes to some extent, operate more easy, accelerate the adaptation time of new employee to production line, there is good economic benefit and investment landscape.
The all or part of step that one of ordinary skill in the art will appreciate that in said method is carried out instruction related hardware by program and is completed, and described program can be stored in computer-readable recording medium, as ROM (read-only memory), disk or CD etc.Alternatively, all or part of step of above-described embodiment also can use one or more integrated circuit to realize.Correspondingly, each module/unit in above-described embodiment can adopt the form of hardware to realize, and the form of software function module also can be adopted to realize.The present invention is not restricted to the combination of the hardware and software of any particular form.
Certainly; the present invention also can have other various embodiments; when not deviating from the present invention's spirit and essence thereof; those of ordinary skill in the art are when making various corresponding change and distortion according to the present invention, but these change accordingly and are out of shape the protection domain that all should belong to claim of the present invention.
Claims (5)
1. the automatic control system of a gypsum board manufacture system, described gypsum board manufacture system comprises former hot systems, feed proportioning system, drying system, packaging system, is characterized in that, described automatic control system comprises: host computer, the control device of former hot systems, the control device of feed proportioning system, the control device of packaging system, host computer is connected with the control device of described three systems by Industrial Ethernet or bus, composition closed hoop web frame;
The temperature sensor used by described drying system, as the reference mark under the control device of described former hot systems, controls the temperature in described dryer by the control device of described former hot systems;
Temperature information in the described dryer gathered is sent to the touch screen display of described packaging system by the control device of described former hot systems by bus.
2. the system as shown in claim 1, is characterized in that, the temperature sensor that described drying system uses comprises:
The recircilated air intake place of described dryer arranges the first temperature sensor, for detecting the temperature at recircilated air intake place; And
The circulating air exit of described dryer arranges the second temperature sensor, for detecting the temperature in circulating air exit.
3. the system as shown in claim 1, is characterized in that, in described dryer, heat-conducting oil pipes arranges control valve, and described control valve is connected with described former hot systems control device; Arrange drain tap in described dryer, described drain tap is connected with described former hot systems control device; Described former hot systems control device regulates the temperature in described dryer by the aperture of the drain tap controlling control valve in described dryer on heat-conducting oil pipes or described dryer inner.
4. the system as claimed in claim 1, is characterized in that, described former hot systems arranges touch-screen, by fieldbus and described former hot systems control device interaction data; Described feed proportioning system arranges touch-screen, by fieldbus and described feed proportioning system control device interaction data; The touch-screen of described packaging system and the control device of described packaging system are by bus interaction data.
5. the system as claimed in claim 1, it is characterized in that, described packaging system also comprises optoelectronic switch, first frequency converter, the first motor be connected with frequency converter, described optoelectronic switch connects packaging system control device, and described packaging system control device also with the first frequency converter is connected, for controlling the first frequency converter, described first frequency converter rotates for driving described first motor; Described first motor has been used for ejecting plate;
Described packaging system also comprises the second frequency converter, the second motor be connected with the second frequency converter, described packaging system control device is connected with described second frequency converter, and for controlling described second frequency converter, described second frequency converter rotates for driving described second motor; Described second motor has been used for stacking.
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| CN201410469717.0A CN105425734A (en) | 2014-09-15 | 2014-09-15 | Automatic control system of plasterboard production system |
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| CN105890340A (en) * | 2016-04-26 | 2016-08-24 | 中国新型建材设计研究院 | Tracing control method for board transporting segment of gypsum board drier |
| WO2018196165A1 (en) * | 2017-04-24 | 2018-11-01 | 北新集团建材股份有限公司 | Control method of gypsum board shaping system |
| CN110968126A (en) * | 2018-09-30 | 2020-04-07 | 北新集团建材股份有限公司 | Gypsum board raw material constant temperature control system and control method |
| CN113093668A (en) * | 2021-03-24 | 2021-07-09 | 中建材创新科技研究院有限公司 | Linkage adjustment method for intelligent production line of gypsum building materials |
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| CN113771240A (en) * | 2021-08-19 | 2021-12-10 | 中建材创新科技研究院有限公司 | Gypsum board production device and production method |
| CN113787605A (en) * | 2021-09-24 | 2021-12-14 | 北新集团建材股份有限公司 | Gypsum board production line network connection system |
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| CN113093668A (en) * | 2021-03-24 | 2021-07-09 | 中建材创新科技研究院有限公司 | Linkage adjustment method for intelligent production line of gypsum building materials |
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| CN113771240B (en) * | 2021-08-19 | 2023-10-20 | 中建材创新科技研究院有限公司 | Gypsum board production device and production method |
| CN113787605A (en) * | 2021-09-24 | 2021-12-14 | 北新集团建材股份有限公司 | Gypsum board production line network connection system |
| CN114311272A (en) * | 2021-12-24 | 2022-04-12 | 北新集团建材股份有限公司 | Automatic matching system for production line formula |
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