CN201925166U - Screw compressor control system based on multi-microcontroller MPU (micro-processing unit) - Google Patents
Screw compressor control system based on multi-microcontroller MPU (micro-processing unit) Download PDFInfo
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- CN201925166U CN201925166U CN2010205763177U CN201020576317U CN201925166U CN 201925166 U CN201925166 U CN 201925166U CN 2010205763177 U CN2010205763177 U CN 2010205763177U CN 201020576317 U CN201020576317 U CN 201020576317U CN 201925166 U CN201925166 U CN 201925166U
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Abstract
The utility model discloses a screw compressor control system based on a multi-microcontroller MPU (micro-processing unit), which is characterized by comprising a human-machine interface HMI, a controller and neural elements. The HMI is used for storing a large amount of sample data and field information, the controller is used for controlling a compressor in an optimal loading and unloading manner according to the sample data, the neural elements are used for data communication, the HMI consists of an OLED (organic light emitting diode) display screen, function keys, a memory, a clock and calendar circuit and a separate RS485serial interface, the controller is connected with the HMI via the RS485 communication interface, and the neural elements are connected with the controller via internal communication interfaces. The screw compressor control system has the advantages of growth property, remoldability, capability of deriving child products, OLED Chinese display, multilayer communication structure, energy conservation, intelligent diagnosis, reliability, remote service and the like, improves communication efficiency, safety and confidentiality inside the system, and achieves the purpose of energy conservation of an integral machine.
Description
Technical field
The control field of the machinery that the utility model relates to, what be specifically related to is a kind of growing helical-lobe compressor control system based on multi-microcontroller MPU.
Background technique
The screw type controller is the core component of screw compressor, the intelligent degree of the reliability of controller, stability, opening, networking and integrated degree and controller, the ability of controlling in real time will directly influence performance, function realization, working efficiency and the advanced degree of compressor.
Controller is an electronic unit the most fragile in the machine system, but be critical component, current screw compression machine controller exists the product specification cycle to grow, product is with strong points, transplanting is difficult, PLC product modular function is too complicated, can only be suitable for several key technology bottlenecks such as DI/O or AI/O.
Summary of the invention
The purpose of this utility model is deficiency and the progressive drawback slowly that is to solve traditional product, and provide a kind of multilayer communication architecture that has, the reliability height, the helical-lobe compressor control system based on multi-microcontroller MPU of the neuronal structure that can grow up, can reinvent, improve intrasystem communication efficiency, Security and confidentiality, reached the machine energy-saving target.
In order to reach the purpose of this utility model, the utility model is: based on the helical-lobe compressor control system of multi-microcontroller MPU, it is characterized in that, it comprises that one is used to store the man-machine interface HMI of a large amount of sampled datas and field data, and one adds the controller that unloading manner controls compressor and each neural component that is used for data communication according to sampled data with optimum; Described man-machine interface HMI comprises the serial RS485 interface of OLED display screen, function key, storage, clock/calendar circuit and isolation, described controller is connected with man-machine interface HMI by the RS485 communication interface, and described neural component connects by the internal communication Interface and Controler.
Aforesaid helical-lobe compressor control system based on multi-microcontroller MPU,, wherein, described controller comprises microcontroller, input optoelectronic isolator, analog amount amplifier, output relay, RS485 communication interface and internal communication interface.
Aforesaid helical-lobe compressor control system based on multi-microcontroller MPU; wherein, described neural component comprises motor protecter element, phase sequence device element, intelligent sensor element, power measurement element, WIFI communication element, dew point transducer elements, blower fan protection device, gsm communication element.
Aforesaid helical-lobe compressor control system based on multi-microcontroller MPU, wherein, described man-machine interface HMI and controller all adopt full surface mount.
Aforesaid helical-lobe compressor control system based on multi-microcontroller MPU, wherein, described helical-lobe compressor control system based on multi-microcontroller MPU is connected with extraneous PC by the MODBUS-TCP/IP agreement.
Its beneficial effect of the utility model is:
But 1 growth and remoldability: each neural component all has microcontroller separately, its function opposite independent, adopt network topology structure each other, embedded scalable means, can grow into new product, and the helical-lobe compressor control system framework based on multi-microcontroller MPU designs by " layering building blocks ", arbitrarily increase and decrease, independent assortment, reinvent easily, for client's personalized product demand provides may.
2, has the multilayer communication architecture, the utility model is at the RS-485 of customer end adopted maturation interface, the MODBUS-TCP/IP agreement has solved the contradiction between isolation voltage height (3KV), data rate fast (500kb/s), transmitting range (1kM) far away and the power consumption demand low (20mw); The neural component inside modules has adopted unique and communications protocol efficiently, has improved intrasystem communication efficiency, Security and confidentiality.
3, the sub-product of can deriving: each neural component modular design, for each neural component also can derive general, independently sub-product is laid a good foundation, and can be used for other industry through after the appearance design.
4, the OLED Chinesizing shows: it is the active illuminating device, has characteristics such as wide visual angle and high brightness, wide temperature, low power consumption (about 30mA/100mW), anti-vibration impact, is specially adapted to the industrial control industry.
5, reliability: select for use low power consumption, no external crystal-controlled oscillation designs, highdensity element is evenly distributed by heat energy, and use the EMI device to carry out the PCB layout, add the welding of paster technique machine, just can accomplish the reliability requirement that big system just can reach by redundancy.
6, energy-conservation: the one, this controller adopts the lowest power consumption design, on the basis of having improved reliability, has realized miniaturization, microminiaturization; The 2nd, controlling object---screw compressor can be accomplished the suitable modes such as unloading operation, interlock control or variable frequency adjustment that add according to work condition state when operation, to form the maximum energy-saving technological process, reach the machine energy-saving target.
7, intelligent diagnosis: controller can accomplish that fault localization, fault do sth. in advance early warning, has reduced client's maintenance difficulty, has reduced the spoilage of parts.
8, remote service: but remote upgrade and remote monitoring assist producer to realize remote maintenance.
Description of drawings
Fig. 1 is a structured flowchart of the present utility model.
Fig. 2 is a software architecture diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail, but not as to qualification of the present utility model.
Referring to Fig. 1, the utility model comprises that one is used to store the man-machine interface HMI201 of a large amount of sampled datas and field data, and one adds the controller 301 that unloading manner controls compressor and each neural component 401 that is used for data communication according to sampled data with optimum; This man-machine interface HMI201, controller 301 and each neural component 401 are connected by the dedicated network communications protocol.
In this example, man-machine interface HMI 201 comprises OLED display device 202, function key 203, storage 204, clock/calendar circuit 205 and the serial RS485 interface 206 of isolating; Wherein, OLED display device 202 has that screen is frivolous, and image sharpness is higher, and visible angle is up to 170 degree.This RS-485 interface can move the MODBUS-TCP/IP agreement, solved the contradiction between isolation voltage height (3KV), data rate fast (500kb/s), transmitting range (1kM) far away and the power consumption demand low (20mw), for the communication between upper-position unit and the controller provides reliable passage, man-machine interface HMI 201 adopts complete surperficial subsides technology, and the industrial level manufacturing is all adopted in selecting for use of HMI chip.
What deserves to be mentioned is that controller 301 comprises microcontroller 302, input optoelectronic isolator 303, analog amount amplifier 304, output relay 305, RS485 communication interface 306 and internal communication interface 307.This controller is connected with man-machine interface HMI 201 by the RS485 communication interface, and it is that up-to-date, protective measure has targetedly been taked in the potential interference of various separate sources.And adopt little power consumption and optimization heat dissipation design to realize miniaturization, lightweight, and having increased the intensity of structural member simultaneously, volume, weight all reduce 1/3.In addition, this controller 301 adopts complete surperficial subsides technology, and the industrial level manufacturing is all adopted in selecting for use of controller chip.
Above-mentioned neural component 401 is combinations of each independent neural component, have autonomous microcontroller chip and data storage area independently, have memory and analysing and processing ability simultaneously, its monitored object and higher level are instructed all can in time respond, be used for the control of equipment or production process.It comprises motor protecter element 402, phase sequence device element 403, intelligent sensor element 404, power measurement element 405, WIFI communication element 406, dew point transducer elements 407, blower fan protection device 408, gsm communication element 409, and each neural component is connected with controller 301 by internal communication interface 307.
It should be noted that the utility model is to be connected with extraneous PC by the MODBUS-TCP/IP agreement, realize the man-machine communication; Its software function implementation is: data capture is the emphasis of controller 301, and it mainly finishes the accurate measurement of input signals such as phase sequence, electric current, temperature, pressure and digital quantity, and the data that collect are conveyed to each neural component.And data communication is the core of each neural component, also be based on the design key point and the innovative point of the helical-lobe compressor control system of multi-microcontroller MPU, it mainly finishes uploading of sampled data and Control Parameter, most importantly to carry out active data communication and data sharing with each neural component module, guarantee the determinacy and the repeatability of control network requirement.Each neural component uploads to the control software of controller 301 with its Control Parameter, and control software is mainly finished helical-lobe compressor motor, Oil pump electrical machinery, added the opening and closing of unloading solenoid valve and cooling fan.Control software is realized following control mode:
(1) independent control
The A near-earth is controlled (start stop mode: by the machine automatically; Load mode: automatically)
1., by the starting of " ON " key: (starting of Y-Δ) controller has self check in 3 seconds after powering on, by the fail to start of " ON " key, self check finishes the back and begins starting by " ON " key main frame, the main engine starting process is: KM3 gets, KM2 gets, and electric-Y shape starting state-delay time arrives (Y-Δ conversion time), KM3 dead electricity (KM1, KM3 interlocking), KM1 gets, and electric-motor Δ shape is moved, proceed-to-send.In the starting process, all solenoid valves are dead electricity always, realizes the empty wagons starting.
2., operation control automatically: electric motor starting is behind the Δ state, and after time-delay a period of time, the loading solenoid valve gets electric, and air compressor begins loading, and the vapour pressure tank begins to raise.When air pressure raise to surpass is set high pressure limiting power (unloading pressure value), load the solenoid valve dead electricity, unload the discharge magnet valve get electric, the operation of air compressor empty wagons.If in scheduled time (empty wagons is in the time), air pressure is reduced to the lower bound pressure (on-load pressure value) of setting again, loads solenoid valve electricity again, unloads and puts the valve dead electricity, and the normal pressurized air of compressor improves gas tank pressure.If in the time, gas tank pressure does not drop to lower bound pressure at empty wagons, controller will stop machine operation automatically, and the realization empty wagons is crossed autostop of a specified duration.Have only the pressure of working as to drop to lower bound pressure, motor circulates and so forth automatically by the starting process starting operation.
3., manual load/unload under auto state: under auto state, equipment is in unloaded state, clicks " M " and loads, if pressure is higher than unloading pressure, loads and gets back to unloaded state after the solenoid valve point makes a movement; If pressure is lower than unloading pressure, loads solenoid valve and get the electric unloaded state that after supply gas pressure is greater than unloading pressure, comes back to.Equipment is in loaded state, clicks " M " unloading, if pressure is higher than on-load pressure, loads the solenoid valve dead electricity and come back to loaded state after supply gas pressure is less than on-load pressure; If pressure is lower than on-load pressure, unload inoperative this moment.
4., orderly closedown: by " OFF " key, load the solenoid valve dead electricity and unload the discharge magnet valve get electric, after time-delay a period of time (shutting down time-delay), motor contactor dead electricity, main frame and fan electromotor shut down, and restarting and unloading discharge magnet valve dead electricity after time-delay finishes.Have only by " ON " key and just can reset.
5., anti-Fraquent start control: shut down by " OFF ", empty wagons is crossed shutdown of a specified duration, actuating motor at once when disorderly closedown makes the motor stall; certain time-delay need be arranged; this controller time showing window count-down under various outage states shows residue delay time (as 90 seconds), could actuating motor when having only delay time to be zero.
B, remote auto control (start stop mode: long-range; Load mode: automatically)
Automatically control is the same substantially with near-earth in remote auto control, and different is that equipment start-stop can be finished by remote switch control.
C, near-earth are manually controlled (start stop mode: by the machine; Load mode: manually)
Start and stop control after just device start finishes, is in the unloading operation with control is the same automatically." M " key loads, and when supply gas pressure during greater than unloading pressure, equipment unloads automatically, if button " M " loads, equipment unloads operation always and shuts down up to empty wagons.In uninstall process, load by " M " key; In loading procedure, by the unloading of " M " key.
D, remote manual control (start stop mode: long-range; Load mode: manually)
Manually control is the same with near-earth in remote manual control, and just equipment start-stop can be controlled by remote switch.
(2) networking control
A, when being set to " computer ", can realize the controller combined network communication computer networking control.
B, can realize networking control between controller and the controller for " interlock " when the controller communication setting, but main frame can only be the 1# machine.In interlock control:
1., balancing equipment moves and add unloading time, prolongs the working life of equipment;
2., when the operational outfit jumping machine that breaks down, drop into guest machine automatically, realize the continuity of air feed;
3., automatically regulate compressor and the subsidiary engine quantity that puts into operation, be implemented in stable output pressure, when improving the high quality air feed, guarantee that opening device is minimum, energy-saving and cost-reducing, save operating cost.
4., compressor and the sequence starting of exsiccator equipment, avoid starting simultaneously causing electrical network impacted.
(3) blower fan temperature control
When delivery temperature during greater than the blower fan cranking temperature, the fan electromotor operation; When delivery temperature during less than the blower fan shutdown temperature, fan electromotor is out of service.
(4) draining control automatically
This controller is provided with the timing drainage function, by the draining endurance of setting and blanking time timing drainage.
(5) disorderly closedown and emergency shutdown control
Controller stops the motor operation immediately when fault such as electrical failure or exhaust high temperature occurring in running when unit, need fix a breakdown and just can reset motor after removing fault state.As urgency, press the emergency shutdown button, cut off controller and contactor power supply.
Moreover, the control software of controller 301 to helical-lobe compressor motor, Oil pump electrical machinery, add the opening and closing control of unloading solenoid valve and cooling fan after, transfer data to the data analysis that is located at HMI, because HMI has mass storage function, it can show and data analysis the compressor state according to instant data and historical data.
(1) data display
A, service data show, comprise compressor electric motor electric current, blower fan electric current, outlet pressure, the preceding pressure of filter, outlet temperature.
B, system data show, comprise clock/calendar, various I/O state, communication state, operation indicating.
C, other:
1., empty filter early warning indication
A, detect early warning with switching signal: controller is by detecting empty filter differential pressure switch action prompting operation person's " empty filter obstruction " on text display.
B, set early warning service time of empty filter: empty filter arrives service time, prompting operation person on the text display " empty filter service time to ".
2., oil screen early warning indication
A, detect early warning with switching signal: controller is by detecting oil screen differential pressure switch action prompting operation person's " oil screen obstruction " on text display.
B, set oil screen early warning service time: empty filter arrives service time, prompting operation person on the text display " oil screen service time to ".
3., oil content device early warning indication
A, detect early warning with switching signal: controller is by detecting oil content device differential pressure switch action prompting operation person's " oil content device obstruction " on text display.
B, set early warning service time of oil content device: empty filter arrives service time, prompting operation person on the text display " oil content device service time to ".
4., lubricant oil early warning indication
Lubricant oil arrives service time, prompting operation person on the text display " lubricant oil service time to ".
5., lubricating grease early warning indication
Lubricating grease arrives service time, prompting operation person on the text display " lubricating grease service time to ".
(2) data analysis
Based on the analysis and the processing of instant data, as: motor overload, phase shortage, phase sequence mistake, transfinite;
Based on the technological flow analysis and the processing of fixed-point data, as: pressure, temperature etc.;
Tracing analysis and related data analysis and processing based on minute data;
Based on the foundation and the maintenance of the database of hour data and minute data, and relevant treatment, as: various forms, for later failure prediction provides data on the other hand.
In addition, also be provided with the prediction fault among the HMI, it is the result according to data analysis, provides according to expert's field experience for many years to predict the outcome, and notifies the client by the mode that shows and report to the police.
More than show and described basic principle of the present utility model and major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (5)
1. based on the helical-lobe compressor control system of multi-microcontroller MPU, it is characterized in that, it comprises that one is used to store the man-machine interface HMI of a large amount of sampled datas and field data, and one adds the controller that unloading manner controls compressor and each neural component that is used for data communication according to sampled data with optimum; Described man-machine interface HMI comprises the serial RS485 interface of OLED display screen, function key, storage, clock/calendar circuit and isolation, described controller is connected with man-machine interface HMI by the RS485 communication interface, and described neural component connects by the internal communication Interface and Controler.
2. the helical-lobe compressor control system based on multi-microcontroller MPU according to claim 1 is characterized in that: described neural component comprises motor protecter element, phase sequence device element, intelligent sensor element, power measurement element, WIFI communication element, dew point transducer elements, blower fan protection device, gsm communication element.
3. the helical-lobe compressor control system based on multi-microcontroller MPU according to claim 1 is characterized in that: described controller comprises microcontroller, input optoelectronic isolator, analog amount amplifier, output relay, RS485 communication interface and internal communication interface.
4. the helical-lobe compressor control system based on multi-microcontroller MPU according to claim 1 is characterized in that: described helical-lobe compressor control system based on multi-microcontroller MPU is connected with extraneous PC by the MODBUS-TCP/IP agreement.
5. according to claim 1 or 3 described helical-lobe compressor control system based on multi-microcontroller MPU, it is characterized in that: described man-machine interface HMI and controller all adopt full surface mount.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205763177U CN201925166U (en) | 2010-10-22 | 2010-10-22 | Screw compressor control system based on multi-microcontroller MPU (micro-processing unit) |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010205763177U CN201925166U (en) | 2010-10-22 | 2010-10-22 | Screw compressor control system based on multi-microcontroller MPU (micro-processing unit) |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111009106A (en) * | 2018-10-05 | 2020-04-14 | 财团法人工业技术研究院 | Human-computer interface system and communication control device thereof |
| CN111322234A (en) * | 2020-04-10 | 2020-06-23 | 四川启明星铝业有限责任公司 | Control system and method for overhead travelling crane air compressor |
| CN111623008A (en) * | 2019-11-29 | 2020-09-04 | 青岛中加特电气股份有限公司 | Electromagnetic valve control device for loading and unloading mine pump station |
-
2010
- 2010-10-22 CN CN2010205763177U patent/CN201925166U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111009106A (en) * | 2018-10-05 | 2020-04-14 | 财团法人工业技术研究院 | Human-computer interface system and communication control device thereof |
| US11243520B2 (en) | 2018-10-05 | 2022-02-08 | Industrial Technology Research Institute | Human-machine interface system and communication control device thereof |
| CN111623008A (en) * | 2019-11-29 | 2020-09-04 | 青岛中加特电气股份有限公司 | Electromagnetic valve control device for loading and unloading mine pump station |
| CN111322234A (en) * | 2020-04-10 | 2020-06-23 | 四川启明星铝业有限责任公司 | Control system and method for overhead travelling crane air compressor |
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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: 20110810 Termination date: 20131022 |