CN104317328A - Resistance furnace temperature control system based on PLC - Google Patents
Resistance furnace temperature control system based on PLC Download PDFInfo
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- CN104317328A CN104317328A CN201410676500.7A CN201410676500A CN104317328A CN 104317328 A CN104317328 A CN 104317328A CN 201410676500 A CN201410676500 A CN 201410676500A CN 104317328 A CN104317328 A CN 104317328A
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- temperature control
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Abstract
The invention discloses a resistance furnace temperature control system based on a PLC. The system comprises a resistance furnace, the PLC, a digital temperature sensor, a solid-state relay, a keyboard and a display module, wherein the digital temperature sensor is connected with the resistance furnace, the PLC is connected with the digital temperature sensor and the solid-state relay, the solid-state relay is connected with the resistance furnace, the keyboard is connected with the PLC, and the PLC is connected with the display module. Through the resistance furnace temperature control system based on the PLC, the temperature can be automatically adjusted, the control accuracy is high, work is reliable and easy to extend, and the system has important actual significance in the aspects of improving production efficiency and promoting scientific and technological progress.
Description
Technical field
The present invention relates to a kind of resistance furnace control technology, be specifically related to based on PLC Resistance Furnace Temperature Control System.
Background technology
Automatic control system has and applies widely in every field especially industrial circle, and temperature controls to be one of Control Cooling the most common in control system.Along with the develop rapidly of singlechip technology, by single-chip microcomputer, controlled device is controlled, become an important development direction of automation field from now on.
Resistance furnace utilizes electric current to make heating in stove or electric heating dielectric heat, thus reach a kind of electric furnace to material or workpiece heat, is one of main production equipments of industry spot, is widely used in fields such as metallurgy, chemical industry, manufacture, machineries.Therefore, temperature controls in commercial production and scientific research significant.Resistance furnace adopts analogue instrument measuring tempeature usually, and controls heating power by the make-and-break time ratio controlling A.C. contactor, and because the measuring accuracy of analogue instrument itself is poor, add that the life-span of A.C. contactor is short, break-make ratio is low, therefore control accuracy is low.Along with the development of industrial technology, more and more higher to temperature controlled requirement, traditional analog switch controls not reach requirement.Therefore, develop the Resistance Furnace Temperature Control System of high-accuracy intelligent, meet modern industry to temperature controlled demand, there is higher economic benefit and good practical value.
Summary of the invention
The technical problem to be solved in the present invention is to provide that a kind of automatic adjustment temperature, control accuracy are high, reliable operation is easy to expand based on PLC Resistance Furnace Temperature Control System, and to enhancing productivity, promoting, scientific-technical progress aspect has important practical significance.
For solving the problems of the technologies described above, the present invention by the following technical solutions:
Based on PLC Resistance Furnace Temperature Control System, comprise resistance furnace, PLC, digital temperature sensor, solid-state relay, keyboard and display module, described digital temperature sensor is connected with resistance furnace, PLC connects digital temperature sensor, described PLC connects solid-state relay, solid-state relay contact resistance stove, described keyboard connects PLC, and PLC connects display module.
Further, described PLC is also connected with clock circuit and sound light alarming circuit.
Further, described PLC is also provided with communication interface, and PLC connects host computer by communication interface.
Preferably, described display module is liquid crystal display.
Beneficial effect of the present invention is: the present invention take PLC as core, according to the temperature of input through keyboard setting, digital temperature sensor real-time inductive reactance stove actual temperature, the resistance furnace actual temperature value of the reception of PLC and the deviation of set-point carry out PID arithmetic, operation result exports the size of controlling resistance stove average power, control conducting or the shutoff of solid-state relay voluntarily, thus the heat time of controlling resistance stove, automatic adjustment temperature is to realize the control to furnace temperature, make automatically to regulate temperature based on PLC Resistance Furnace Temperature Control System, control accuracy is high, reliable operation is easy to expand, to enhancing productivity, promote that scientific-technical progress aspect has important practical significance.
Accompanying drawing explanation
Fig. 1 is the structured flowchart that the present invention is based on PLC Resistance Furnace Temperature Control System;
Fig. 2 is the program flow diagram that the present invention is based on PLC Resistance Furnace Temperature Control System.
Embodiment
Accompanying drawing discloses concrete structure of the present invention without limitation, and below in conjunction with accompanying drawing, the invention will be further described.
As shown in Figure 1, 2, based on PLC Resistance Furnace Temperature Control System, comprise resistance furnace, PLC, digital temperature sensor, solid-state relay, keyboard and display module, described digital temperature sensor is connected with resistance furnace, PLC connects digital temperature sensor, and described PLC connects solid-state relay, solid-state relay contact resistance stove, described keyboard connects PLC, and PLC connects display module.Described PLC is also connected with clock circuit and sound light alarming circuit.Described PLC is also provided with communication interface, and PLC connects host computer by communication interface.Described display module is liquid crystal display.
The course of work of the present invention: the present invention utilizes digital temperature real-time inductive reactance stove actual temperature and actual temperature signal value is sent to PLC, after PLC carries out Data Analysis Services, by liquid crystal display displays temperature and judge whether report to the police, the deviation from the index value of actual temperature value and input through keyboard is carried out PID arithmetic simultaneously, operation result exports the size of controlling resistance stove average power, control conducting or the shutoff of solid-state relay voluntarily, thus the heat time of controlling resistance stove, to realize the control to furnace temperature; Clock circuit in this system can carry out accurate timing as requested; Meanwhile, this system also controls by host computer, and now, host computer input control signal, the PLC be connected with communication interface receives control signal, and sends corresponding control signals resistance furnace after processing by analysis.
Claims (4)
1. based on PLC Resistance Furnace Temperature Control System, comprise resistance furnace, PLC, digital temperature sensor, solid-state relay, keyboard and display module, it is characterized in that: described digital temperature sensor is connected with resistance furnace, PLC connects digital temperature sensor, described PLC connects solid-state relay, solid-state relay contact resistance stove, described keyboard connects PLC, and PLC connects display module.
2. according to claim 1 based on PLC Resistance Furnace Temperature Control System, it is characterized in that: described PLC is also connected with clock circuit and sound light alarming circuit.
3. according to claim 1 based on PLC Resistance Furnace Temperature Control System, it is characterized in that: described PLC is also provided with communication interface, and PLC connects host computer by communication interface.
4. according to claim 1 based on PLC Resistance Furnace Temperature Control System, it is characterized in that: described display module is liquid crystal display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410676500.7A CN104317328A (en) | 2014-11-21 | 2014-11-21 | Resistance furnace temperature control system based on PLC |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410676500.7A CN104317328A (en) | 2014-11-21 | 2014-11-21 | Resistance furnace temperature control system based on PLC |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104317328A true CN104317328A (en) | 2015-01-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410676500.7A Pending CN104317328A (en) | 2014-11-21 | 2014-11-21 | Resistance furnace temperature control system based on PLC |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106527535A (en) * | 2016-11-17 | 2017-03-22 | 山西潞安煤基合成油有限公司 | Temperature control device and method for total sulfur reaction furnace |
| CN107357245A (en) * | 2017-07-02 | 2017-11-17 | 苏州万里海航机电科技有限公司 | A kind of hot clean furnace control system based on PLC |
| CN109116886A (en) * | 2018-08-20 | 2019-01-01 | 江苏和腾热工装备科技有限公司 | A kind of system of high-temperature electric resistance furnace PLC and touch screen combination temperature control |
| CN111813164A (en) * | 2020-07-29 | 2020-10-23 | 西南铝业（集团）有限责任公司 | Aluminum product production equipment and air cushion furnace temperature-running alarm device thereof |
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2014
- 2014-11-21 CN CN201410676500.7A patent/CN104317328A/en active Pending
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106527535A (en) * | 2016-11-17 | 2017-03-22 | 山西潞安煤基合成油有限公司 | Temperature control device and method for total sulfur reaction furnace |
| CN106527535B (en) * | 2016-11-17 | 2018-11-20 | 山西潞安煤基合成油有限公司 | Total sulfur reacting furnace temperature control device and method |
| CN107357245A (en) * | 2017-07-02 | 2017-11-17 | 苏州万里海航机电科技有限公司 | A kind of hot clean furnace control system based on PLC |
| CN109116886A (en) * | 2018-08-20 | 2019-01-01 | 江苏和腾热工装备科技有限公司 | A kind of system of high-temperature electric resistance furnace PLC and touch screen combination temperature control |
| CN111813164A (en) * | 2020-07-29 | 2020-10-23 | 西南铝业（集团）有限责任公司 | Aluminum product production equipment and air cushion furnace temperature-running alarm device thereof |
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Application publication date: 20150128 |