CN201579114U - Controller of high-voltage electrostatic precipitation device based on double CPUs - Google Patents
Controller of high-voltage electrostatic precipitation device based on double CPUs Download PDFInfo
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- CN201579114U CN201579114U CN2009202477861U CN200920247786U CN201579114U CN 201579114 U CN201579114 U CN 201579114U CN 2009202477861 U CN2009202477861 U CN 2009202477861U CN 200920247786 U CN200920247786 U CN 200920247786U CN 201579114 U CN201579114 U CN 201579114U
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Abstract
The utility model discloses a controller of a high-voltage electrostatic precipitation device based on double CPUs, which belongs to the technical field of the high-voltage electrostatic precipitation device. The controller of the high-voltage electrostatic precipitation device based on double CPUs comprises a main control unit, an I/O unit, an input unit and an output unit; and the main control unit comprises a high-voltage control CPU (1), a low-voltage control CPU (2), a drive circuit (3), a communication interface circuit (4), a controllable silicon triggering drive circuit (5), an analog quantity input circuit (6) and a photoisolator (7). The utility model has the advantages of simple structure, reliable performance, high performance-price ratio, low cost, high integration degree of a product and the like.
Description
Technical field
The invention belongs to the high voltage electrostatic dust precipitator technical field, belong to a kind of controller of the high voltage electrostatic dust precipitator based on two CPU in particular.
Background technology
After date in 18th century, the mankind enter the age of industrial civilization, and coal has just become the main energy sources material.The burning of coal not only produces a large amount of carbon nitrogen sulfur oxides, also a large amount of dust of discharging in air.Dust has great harm to environment and human beings'health.Be accompanied by rapid development of economy, mean that people are converted into industrial raw materials and product with increasing mineral resources, do factory, the power station of fuel with coal, the flue gas that discharge every day is taken away a large amount of coal dusts, not only waste fuel, also increasing discarded object is thrown to the Nature simultaneously.Just contain a large amount of graininess dust in the thick smoke of from the chimney of factory, emerging, their severe contaminations environment, have influence on growth and the human beings'health of crop.Therefore, people with regard to how to reduce dust content has carried out a large amount of research in the air.1824, demonstrated the experiment of electrostatic precipitation for the first time; Success on the electrostatic collection sulfuric acid mist in 1907 causes its dedusting in the industrial fumes pollution sources to be used.When first electrostatic precipitator after Det reit Edison company occurs, indicate that electrostatic precipitator technology marched toward stage of ripeness of practical application from the experimental science stage.Along with development of modern industry, atmosphere pollution has badly influenced the healthy of ecological environment and people, so the purification of flue gas more and more is subjected to people's attention.
Adopt after the dedusting technology, from the emission of chimney, again can't see dense black smog.Electrostatic precipitation by people generally acknowledge, ripe, high-efficiency reliable dedusting technology.Industry deduster commonly used be many such cylinder units side by side, form " honeycomb " shape, with the raising efficiency of dust collection.The central axis of each cylinder lead with the cylinder insulation that all suspended is referred to as corona wire; Metallic cylinder, we claim that it is a colelctor electrode.The positive pole of DC high-voltage power supply is connected on the metallic cylinder, and negative pole is connected on the corona wire.Its principle is after power connection, has just set up an inhomogeneous field between colelctor electrode and the corona wire, near the electric field maximum corona wire.Can change corona wire electric-field intensity on every side by regulating power source voltage.(3 * 106V/m) time, air will be breakdown and then ionization is taken place, and forms a large amount of positive and negative ion greater than its breakdown electric field critical value when airborne electric-field intensity.Anion with electric field to anodal drift, in the process of drift with dust in neutral dust granules bump, these dust granules attract electrons have made on the originally neutral dust lane negative electricity later on.Under effect of electric field, these all electronegative dust granules all are attracted on the colelctor electrode.When dust accumulated to a certain degree, by vibrating device, dust granules just fell into and reclaims ash bucket.If deduster is installed in the chimney bottom, the gas that contains flue dust enters from an end of this " honeycomb ", just stay when going out with flue dust, become the gas of cleaning.
Electrostatic precipitator is widely used in every field such as metallurgy, electric power, chemical industry with its characteristics such as efficient, energy-conservation, low in energy consumption, and its adopts high-voltage DC power supply control technology, has experienced discrete component, integrated circuit and three epoch of Control Technique of Microcomputer.Microcomputer (as single chip microcomputer) electrostatic precipitation is controlled scheme automaticity height, control mode is flexible, but its power-supply system is subjected to the interference of the forceful electric power magnetic that highfield and rectifier higher hamonic wave bring in practical work process, often generation systems is controlled not normal, microcomputer " deadlock " phenomenons such as (i.e. " flight distance prefaces "), has reduced the safety and the reliability of dust pelletizing system widely.
As the key equipment of electric dust removing system, its main effect is by DC voltage and DC current being provided, making the dust that enters electric field to become trapped in the pole plate polar curve after charged to electric field to electrostatic precipitation, thereby reaches the purpose of deashing with high voltage rectification equipment.
At present, electrostatic precipitation can only be finished high voltage control with independent dual pressure controller, controllers such as the other increase of low-pressure section needs PLC go to finish, this just causes high-low pressure equipment can't reliably get in touch each other, can only realize connecting by dry contact even complicated communication by on-the-spot laying-out, and it is interconnected to be that the transmission of unidirectional signal can't realize, has therefore limited the realization of a lot of functions, and the reliability of whole system also decreases.
Summary of the invention
The present invention is in order to solve above technical problem, discloses a kind of controller of the high voltage electrostatic dust precipitator based on two CPU.
The controller of a kind of high voltage electrostatic dust precipitator based on two CPU of the present invention comprises main control unit, I/O unit, input block and output unit; Wherein: described main control unit comprises that high voltage control CPU, low voltage control CPU, drive circuit, communication interface circuit, controllable silicon trigger drive circuit, simulated measurement input circuit, photoisolator; Wherein: carry out serial communication between described high voltage control CPU and the low voltage control CPU; Described high voltage control CPU links to each other with I/O unit, keyboard input block and liquid crystal display output unit by drive circuit with low voltage control CPU; Described low voltage control CPU by photoisolator trigger drive circuit with controllable silicon, simulated measurement input circuit links to each other; Described I/O unit links to each other with outside input, output interface; The drive circuit of described main control unit links to each other with the liquid crystal display output unit with the keyboard input block; Described input block comprises finger-impu system; Described output unit comprises display unit.
Described high voltage control CPU is DSP.Described low voltage control CPU is ARM.Bus between described high voltage control CPU and the low voltage control CPU is the RS485 bus.Bus between described high voltage control CPU and the low voltage control CPU is the CAN bus.Described key input section is a kind of matrix keyboard.Described liquid crystal display output is a kind of LCDs.
The applied high voltage electrostatic dust precipitator of the present invention comprises deduster body part, high-pressure section, low-pressure section and master system.
The deduster body part is mainly finished the dedusting work of flue gas, also is the control object of the controller of high voltage electrostatic dust precipitator of the present invention, is installed in the chimney of flue gas process.
High-pressure section comprises high voltage step-up part and rectifying part, and the DC voltages that the high-pressure section rectification goes out several ten thousand volts are added on the two poles of the earth of deduster body and then realize dedusting work such as gas ionization, dust are charged.
Low-pressure section is mainly unloaded ash, ash-transmission system, insulator heating control system by anode, cathode rapping system, ash bucket and is formed, and is mainly used in the process that the dust of finishing mobile phone on the pole plate carries out vibration dust-cleaning and transferred out dust by ash bucket.When coal-fired flue-gas passed through high voltage electric field, dust in flue gas was charged because of ionization, and charged dust is adsorbed to pole plate, by the rapping pole plate dust is dropped into dust collect plant, clear through conveying arrangement, reach the purpose that purifies flue gas, the function of low-pressure section is controlled motor, rapping pole plate exactly.By flue gas is that order is passed through several electric fields, and the dust of each electric field is pounced on collection amount difference, and each electric field anode rapping apparatus should be provided with different rapping time and shaking cycle, thereby avoids dust secondary fly-up and corona phenomenon to take place.Do not pounce on the effect of collection dust because cathode line does not play simultaneously, and ash-collecting amount is less, so general cathode rapping device adopts continuous rapping, can normal bloom and current-sharing to guarantee cathode line.Low-pressure section and epigynous computer section are networked, and can realize the Long-distance Control of host computer.
The ipc monitor system carries out real-time monitoring to on-the-spot cleaner, can in time react the operation conditions of field apparatus rapidly, and allows the operations staff to carry out Long-distance Control.Master system provides a good man-machine interaction interface for the operational management personnel, can show intuitively by screen the operational factor and the running status of each equipment of electric cleaner to have made things convenient for the control of operating personnel to equipment.
High-low pressure integratedization controller of the present invention will be imported the high voltage control of electric field and low pressure rapping and add thermal control and be integrated in the cabinet, overcome the isolatism of existing electrostatic precipitation dual pressure controller, high voltage control and low voltage control have been finished simultaneously, saved the PLC cabinet, realized high-low pressure integratedization truly, especially under the functional conditions that needs step-down rapping etc., remove the loaded down with trivial details of on-the-spot laying-out from, directly in switch board, realized low voltage control.Adopt brand-new control technology and control platform, have operation, the display interface of hommization more and very strong control function easily.This high-low pressure interlock control has improved the control accuracy and the reliability of whole electric precipitation electric-control system greatly.
The technical solution adopted for the present invention to solve the technical problems is: integrated ARM two CPU that is used for the DSP of handle high voltages control and is used to handle low voltage control on the main control unit plate of controller.The two CPU of ARM and DSP communicate with serial port; ARM is responsible for button processing, liquid crystal display, communication and low-voltage equipment control; The controllable silicon that DSP is responsible for conversion, data processing and the high-tension apparatus of analog quantity triggers.Digital quantity input, the output control of ARM and DSP are connected on the I/O cell board by winding displacement, and the I/O cell board is isolated with outside input, output interface through photoelectricity and connected.Can add thermal control in the high voltage control that will import electric field and low pressure rapping and be integrated in the cabinet, promptly finish high voltage control and low voltage control simultaneously.
The present invention compared with prior art, it is low to have simple in structure, dependable performance, cost performance height, cost, the integrated degree advantages of higher of product.
Description of drawings
Accompanying drawing 1 is the structural representation of the controller of high voltage electrostatic dust precipitator.
The specific embodiment
Preferred implementation one:
Fig. 1 is the structural representation of the controller of a kind of high voltage electrostatic dust precipitator based on two CPU of the present invention, comprises main control unit, I/O unit, input block and output unit; Wherein: described main control unit comprises that high voltage control CPU 1, low voltage control CPU 2, drive circuit 3, communication interface circuit 4, controllable silicon trigger drive circuit 5, simulated measurement input circuit 6, photoisolator 7; Wherein: carry out serial communication between described high voltage control CPU 1 and the low voltage control CPU 2; Described high voltage control CPU 1 links to each other with I/O unit, keyboard input block and liquid crystal display output unit by drive circuit 3 with low voltage control CPU 2; Described low voltage control CPU 2 links to each other with controllable silicon triggering drive circuit 5, simulated measurement input circuit 6 by photoisolator 7; Described I/O unit links to each other with outside input, output interface; The drive circuit 3 of described main control unit links to each other with the liquid crystal display output unit with the keyboard input block; Described input block comprises finger-impu system 8; Described output unit comprises display unit 9; Described I/O unit comprises input/output interface circuit 10.
Described high voltage control CPU 1 is DSP; Described low voltage control CPU 2 is ARM; Bus between described high voltage control CPU 1 and the low voltage control CPU 2 is the RS485 bus; Described finger-impu system 8 is a kind of matrix keyboards; Described display unit 9 is a kind of LCDs.
In Fig. 1, main control unit connects with the I/O unit by 50 faller gill lines, connects with push-button unit by 20 faller gill lines, connects with liquid crystal display by 40 faller gill lines.The DSP of the ARM of low voltage control CPU 2 and high voltage control CPU 1 communicates by serial port, ARM will read back high pressure data and state to be saved to RAM and deliver to liquid crystal display and show from DSP, also the control signal of outside be sent to the operations such as start and stop of DSP control high pressure.DSP is responsible for carrying out analog-to-digital conversion according to the analog quantity that collects after isolating through photoelectricity, and judges that according to data the control silicon controlled triggers the operations such as voltage raising and reducing that reach high-tension apparatus.
Because the I/O mouth driving force of ARM, DSP is limited, ARM to liquid crystal display and button and DSP and ARM to the operation of I/O unit all by by circuit drives such as gates.Because the data of DSP are handled and operand is big, the speed of service is had relatively high expectations, so communicating by letter of external RS485 and CAN bus etc. is to be finished by ARM.
Preferred implementation two:
Fig. 1 is the structural representation of the controller of a kind of high voltage electrostatic dust precipitator based on two CPU of the present invention, comprises main control unit, I/O unit, input block and output unit; Wherein: described main control unit comprises that high voltage control CPU 1, low voltage control CPU 2, drive circuit 3, communication interface circuit 4, controllable silicon trigger drive circuit 5, simulated measurement input circuit 6, photoisolator 7; Wherein: carry out serial communication between described high voltage control CPU 1 and the low voltage control CPU 2; Described high voltage control CPU 1 links to each other with I/O unit, keyboard input block and liquid crystal display output unit by drive circuit 3 with low voltage control CPU 2; Described low voltage control CPU 2 links to each other with controllable silicon triggering drive circuit 5, simulated measurement input circuit 6 by photoisolator 7; Described I/O unit links to each other with outside input, output interface; The drive circuit 3 of described main control unit links to each other with the liquid crystal display output unit with the keyboard input block; Described input block comprises finger-impu system 8; Described output unit comprises display unit 9; Described I/O unit comprises input/output interface circuit 10.
Described high voltage control CPU 1 is DSP; Described low voltage control CPU 2 is ARM; Bus between described high voltage control CPU 1 and the low voltage control CPU 2 is the CAN bus; Described finger-impu system 8 is a kind of matrix keyboards; Described display unit 9 is a kind of LCDs.
In Fig. 1, main control unit connects with the I/O unit by 50 faller gill lines, connects with push-button unit by 20 faller gill lines, connects with liquid crystal display by 40 faller gill lines.The DSP of the ARM of low voltage control CPU 2 and high voltage control CPU 1 communicates by serial port, ARM will read back high pressure data and state to be saved to RAM and deliver to liquid crystal display and show from DSP, also the control signal of outside be sent to the operations such as start and stop of DSP control high pressure.DSP is responsible for carrying out analog-to-digital conversion according to the analog quantity that collects after isolating through photoelectricity, and judges that according to data the control silicon controlled triggers the operations such as voltage raising and reducing that reach high-tension apparatus.
Because the I/O mouth driving force of ARM, DSP is limited, ARM to liquid crystal display and button and DSP and ARM to the operation of I/O unit all by by circuit drives such as gates.Because the data of DSP are handled and operand is big, the speed of service is had relatively high expectations, so communicating by letter of external RS485 and CAN bus etc. is to be finished by ARM.
The above; only be the preferable specific embodiment of the present invention; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to replacement or change according to technical scheme of the present invention and inventive concept thereof, all should be encompassed within protection scope of the present invention.
Claims (7)
1. controller based on the high voltage electrostatic dust precipitator of two CPU, it is characterized in that: described controller comprises main control unit, I/O unit, input block and output unit; Wherein:
Described main control unit comprises that high voltage control CPU (1), low voltage control CPU (2), drive circuit (3), communication interface circuit (4), controllable silicon trigger drive circuit (5), simulated measurement input circuit (6), photoisolator (7); Wherein: carry out serial communication between described high voltage control CPU (1) and the low voltage control CPU (2); Described high voltage control CPU (1) links to each other with I/O unit, keyboard input block and liquid crystal display output unit by drive circuit (3) with low voltage control CPU (2); Described low voltage control CPU (2) links to each other with controllable silicon triggering drive circuit (5), simulated measurement input circuit (6) by photoisolator (7);
Described I/O unit comprises input/output interface circuit (10); Described I/O unit links to each other with outside input, output interface;
The drive circuit of described main control unit (3) links to each other with output unit with input block;
Described input block comprises finger-impu system (8);
Described output unit comprises display unit (9).
2. the controller of the high voltage electrostatic dust precipitator based on two CPU according to claim 1, it is characterized in that: described high voltage control CPU (1) is DSP.
3. the controller of the high voltage electrostatic dust precipitator based on two CPU according to claim 1, it is characterized in that: described low voltage control CPU (2) is ARM.
4. the controller of the high voltage electrostatic dust precipitator based on two CPU according to claim 1, it is characterized in that: the bus between described high voltage control CPU (1) and the low voltage control CPU (2) is the RS485 bus.
5. the controller of the high voltage electrostatic dust precipitator based on two CPU according to claim 1, it is characterized in that: the bus between described high voltage control CPU (1) and the low voltage control CPU (2) is the CAN bus.
6. the controller of the high voltage electrostatic dust precipitator based on two CPU according to claim 1, it is characterized in that: described finger-impu system (8) is a kind of matrix keyboard.
7. the controller of the high voltage electrostatic dust precipitator based on two CPU according to claim 1, it is characterized in that: described display unit (9) is a kind of LCDs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202477861U CN201579114U (en) | 2009-11-03 | 2009-11-03 | Controller of high-voltage electrostatic precipitation device based on double CPUs |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009202477861U CN201579114U (en) | 2009-11-03 | 2009-11-03 | Controller of high-voltage electrostatic precipitation device based on double CPUs |
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| CN201579114U true CN201579114U (en) | 2010-09-15 |
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| CN2009202477861U Expired - Fee Related CN201579114U (en) | 2009-11-03 | 2009-11-03 | Controller of high-voltage electrostatic precipitation device based on double CPUs |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103736592A (en) * | 2014-01-24 | 2014-04-23 | 镇江天力变压器有限公司 | Automatic control system of electrical dust removal high-frequency power supply |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103736592A (en) * | 2014-01-24 | 2014-04-23 | 镇江天力变压器有限公司 | Automatic control system of electrical dust removal high-frequency power supply |
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| C14 | Grant of patent or utility model | ||
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100915 Termination date: 20101103 |