CN101833293A - Precision control method and device for adding micro-liquid - Google Patents
Precision control method and device for adding micro-liquid Download PDFInfo
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- CN101833293A CN101833293A CN201010190528A CN201010190528A CN101833293A CN 101833293 A CN101833293 A CN 101833293A CN 201010190528 A CN201010190528 A CN 201010190528A CN 201010190528 A CN201010190528 A CN 201010190528A CN 101833293 A CN101833293 A CN 101833293A
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Abstract
The invention discloses a precision control method and a precision control device for adding micro-liquid. The precision control device comprises an ARM9 processor, a color LCD display touch screen, an Ethernet interface circuit, a high-precision speed regulation circuit, a speed monitoring circuit, a flow detection circuit, a liquid level monitoring circuit, an alarm circuit, an SD card interface circuit, a USB interface circuit, a PWMDAC circuit, an SDRAM memory circuit, a program memory circuit flash, and a motor control interface circuit, wherein the circuits are mutually connected and the precision control for adding the micro-liquid addition is realized by software programming. By using the rate tracking technology to timely change the needed liquid flow, the precision control method and the precision control device for adding the micro-liquid realize the accurate control of micro-liquid addition in the production process, achieve the control precision of 1 percent, and have the functions of local automatic alarm and remote automatic alarm under the abnormal condition. The precision control method and the precision control device have convenient control parameter input, and can be organically integrated with the conventional production equipment to greatly improve the production efficiency and save the production cost.
Description
Technical field
The present invention relates to the industrial automation equipment technical field, particularly a kind of accurate control method and device that adds liquid.
Background technology
In some processing enterprises, it is an important step that micro-amounts of liquids adds, for example: in the process of cigar mill's filter tip and pipe tobacco preparation, add the liquid charging stocks such as essence of different flow as required; The flow of liquid will be done automatically according to Production Line speed and accurately adjust.In the production run at line main device rate ascent stage because traditional liquid control module equipment fluid flow can not rise be adjusted with speed, cause at line main ascent stage non-conformity of quality and close requirement.At the different station of producing, different phase, traffic requirement are also different, thus the interpolation of micro liquid and accurately control be a difficult point in the commercial production;
Summary of the invention
The objective of the invention is to be difficult to the problem of accurately control and a kind of accurate control method and the device that adds liquid that provide at liquid charging stock, this device solves not only that liquid accurately adds problem in the production run, also saved liquid raw material, reach and go out the purpose that waste product does not even go out waste product less, and then enhance productivity.
The object of the present invention is achieved like this:
The accurate control device that a kind of micro liquid adds, this device comprises:
One ARM9 processor is used for the control of device core and calculates;
One color LCD shows and touch-screen, is used for device menu demonstration and control curve display; And, be used for the input of device man-machine conversation and information as soft-touch control;
One ethernet interface circuit is used for device and is connected to LAN (Local Area Network) and remote upgrade and maintenance;
The mobile power that provides of device liquid is provided one precision electric motor;
One speed monitoring circuit is used for device buncher speed and detects;
One flow testing circuit is used for monitoring of device fluid flow and abnormal conditions monitoring;
One level monitoring circuit is used for the monitoring of device liquid level abnormal conditions;
One warning circuit is used for device startup self-detection, fluid flow and reaches scarce liquid abnormal conditions audible alarm unusually;
One SD card interface circuit is used for storage of device key parameter and production process parameters record;
One usb circuit is used for device debugging and software upgrading;
One PWMDAC circuit is used for the device Electric Machine Control;
One SDRAM memory circuitry is used for the device dynamic data storage;
One procedure stores circuit flash is used for the device procedure stores;
One Electric Machine Control interface circuit is used for device and Electric Machine Control interface and protection;
Described device is a core with the ARM9 processor, and is interconnected and realize the precision control that micro liquid adds by software programming between ARM9 and color LCD display screen, touch-screen, pwm circuit, Electric Machine Control interface circuit, usb circuit, SD card interface circuit, ethernet interface circuit, speed monitoring circuit, flow detection circuit, level monitoring circuit and the warning circuit;
The precision control method that a kind of micro liquid adds, this method comprises:
A), link claim 1 described control device is in product line, and also debugging flow detector, liquid level detector, alarm are installed, power on then;
B), the ARM9 processor carries out initialize routine, and color LCD display screen, soft-touch control, pwm circuit, Electric Machine Control interface circuit, usb circuit, SD card interface circuit, ethernet interface circuit, speed monitoring circuit, flow detection circuit, level monitoring circuit and warning circuit are put original value; To the control device self check, and send normal signal and the prompting of this machine normal sound to production line control center by Ethernet;
C), by the device touch-screen, the liquid controlled variable is set, from the SD card, loads the parametric line that prestores by interface circuit, import in real time or import by production line control center by Ethernet;
D), the ARM9 processor produces special P WM signal according to input parameter, this pwm signal is converted into high-precision motor speed control signal through the PWMDAC circuit; ARM9 starts the ADC that carries in the chip this control signal is carried out feedback sample, improves precision;
E), the ARM9 processor detects the motor speed feedback signal from speed detector, and presets the control curve ratio, and adjusts PWM frequency and dutycycle, makes fluid flow meet the control accuracy requirement;
F), the ARM9 processor detects the flow signal from flow detector, normally works on, if note abnormalities, device is local reports to the police and reports to the police to production line control center by Ethernet, and cuts off motor power;
G), the ARM9 processor detects the flow signal from liquid level detector, normally works on, if note abnormalities, control device is reported to the police and is reported to the police to production line control center by Ethernet, and cuts off motor power.
The present invention in time changes required fluid flow with the speed Tracking technology, realized precision control to micro liquid interpolation in the production run, for the accurate control problem that solves the liquid charging stock that adds different flow according to demand provides a kind of effective ways and device, its control accuracy reaches:
3 ml/min-100 ml/min.Flow is pulse free fully steadily, is better than 1%;
Perhaps 50 ml/min-500 ml/min.Flow is pulse free fully steadily, is better than 1%;
Perhaps 300 ml/min-3 liter/minute.Flow is pulse free fully steadily, is better than 1%.
And possess abnormal conditions local warning and remote auto warning function automatically; The controlled variable input is convenient; Good and the existing equipment organic combination of energy; Improve production efficiency greatly, saved production cost.
Description of drawings
Fig. 1 is apparatus of the present invention structural representation
Fig. 2 is a workflow diagram of the present invention
Fig. 3 is a working state figure of the present invention
Embodiment
Embodiment
With perfuming in the production of cigarettes process is example, and the present invention is described in further detail:
Cigarette manufacturing process flow: form by throwing (raw material processing), cigarette (roll-forming), packing (packed products) three main processes; Wherein perfuming is one of main technique of cigarette throwing technology, and the xiang semen material is used evenly, economized in raw materials is crucial; This xiang semen material that this device can be used in the cigarette throwing process adds control;
Consult Fig. 1, control device of the present invention is directly connected to cigarette fiber tow production streamline and production line control center server when specifically working; Constitute a control system.Specific practice is:
Motor among Fig. 1 is as liquid essence flow speed control pump, and essence is by its inlet, is sprayed on the pipe tobacco through the pressure of pump, and liquid level sensor places the contain fluid Essence container, and is connected to the level monitoring circuit among Fig. 1; Flow sensor places between delivery side of pump and the essence sprinkler, is connected to the flow detection circuit among Fig. 1; The Ethernet interface of device is connected to the production line control center server.
Control device comprises with lower member: ARM9 microprocessor (32 MCU), high precision buncher, color LCD display screen, matrix soft-touch control, speed detector, flow detector, liquid level detector and PWMDAC circuit etc.; The rotation of buncher is the mobile power that provides of liquid to be controlled (essence), and speed detector and flow detector are that liquid to be controlled (essence) provides accurate flow control, and liquid level warning provides guarantee for safety in production;
The actual Samsung SC2440 processor of having selected for use of ARM9 microcontroller is core in system, also as bridge extraneous and control device, accepts extraneous PC and sees through software debugging in running parameter that Ethernet interface sends and order, the USB interface device;
The color LCD display screen has used 7 inches TFT devices of 800x480 resolution, is used for device menu and shows and the controlled variable curve display, makes device more directly perceived and easy-to-use, simultaneously also as other information demonstrations;
The matrix soft-touch control is positioned on the color LCD display screen, is used for the input of device man-machine conversation and information;
The PWMDAC circuit is used for the device Electric Machine Control, and noise on its signal and interference are very important to the accurate control of flow;
The sensitivity of the precision of speed monitoring device, the precision of flow detector and leve monitor is all very important to the work and the safety of device.
Consult Fig. 2, be workflow diagram of the present invention; After production line powers on, controller system powers up, the ARM9 processor is at first carried out initialize routine, comprises that the setting of LCD display display format parameter, Ethernet interface parameter are provided with, the USB interface parameter is provided with, SD card parameter is provided with, the alarm parameter is provided with, the electric motor starting parameter is provided with, the flow initial parameter is provided with, the setting of liquid level initial parameter; Then carry out each parts self check of system, comprise LCD display self check, the self check of Ethernet interface function, SDRAM inspection, the self check of SD card read-write capability, usb function self check, flow inspection (should be 0 flow), motor speed inspection (should be 0), alarm start-up prompting sound, if find some parts or a plurality of unit exception, then wait for manual intervention (checking that each parts connects) and carry out self-check program once more, abnormality is not still removed and is then reported to the police to control center by Ethernet; Carrying out running parameter if abnormality disappears loads, comprise start-up course parameter, maximum flow parameter, working time parameter, shutdown process parameter etc., both can on-the-spotly in real time load (touch-screen input), also can clamp and carry default parameter from SD, can also be by the long-range reprinting of control center; Running parameter loads and finishes, the ARM9 processor is according to running parameter, executive routine produces corresponding pwm signal, this pwm signal is converted into high-precision motor speed control voltage signal through the outside PWMDAC circuit of ARM9 processor, the ARM9 processor starts ADC this control voltage signal is carried out feedback sample, to detect Electric Machine Control voltage, if control electric voltage exception then local audible alarm and telecommunication network warning; Electric Machine Control voltage is normal, starter motor and keep motor and rotate then, and this moment, the velocity pick-up circuit can detect the motor speed parameter, and the flow sensing circuit can detect liquid (essence) flow parameter; Follow ARM9 processor execution speed sensing circuit working routine, detect motor rotation speed, and adjustment PWM frequency and dutycycle, reach the setup parameter value up to speed, if through repeatedly (5 times) adjustment, still do not reach speed setting value, stop motor and rotate, and local audible alarm and telecommunication network warning; When motor speed reached setting value, the ARM9 processor was carried out flow sensing circuit working program and is carried out liquid (essence) flow rate test, and Traffic Anomaly (excessive or not enough) then stops machine operation, and local audible alarm and telecommunication network warning; Liquid (essence) flow normally then the ARM9 processor carry out level sensing circuit working program and carry out Level Detection, carry out level monitoring, unusually then stop machine operation, and local audible alarm and telecommunication network are reported to the police; Liquid level normally then controller finished start-up course, entered the steady operation cycle; In cycle, the ARM9 processor circulates repeatedly and carries out following process, is followed successively by: process A → process B → process C → process D → process A at steady operation.
Process A-motor speed monitoring facilities: ARM9 processor execution speed sensing circuit working routine, detect motor rotation speed, adjust PWM frequency and dutycycle if speed is on the low side or higher, reach the setup parameter value up to speed; If motor speed in range of set value, then enters process B flow monitoring program; If the ARM9 processor does not still reach the speed setting value scope through repeatedly (5 times) adjustment, stop motor and rotate, and local audible alarm and telecommunication network warning;
Process B-flow monitoring program: the ARM9 processor is carried out flow sensing circuit working program and is carried out flow rate test, and Traffic Anomaly then stops machine operation, and local audible alarm and telecommunication network warning; Flow normally then enters process C;
Process C-level monitoring program: the ARM9 processor is carried out level sensing circuit working program and is carried out Level Detection, carries out level monitoring, and unusual (too high or too low) then stops machine operation, and local audible alarm and telecommunication network warning; Liquid level normally then enters process D;
Process D-manufacturing parameter logging program; The ARM9 processor is carried out SD card supervisory routine record manufacturing parameter, sends manufacturing parameter to remote computer; Reference record finishes and enters process A; So circulation is constantly arrived up to power down or working time, and the ARM9 processor is carried out shutdown programm.
Fig. 3 is a working state figure of the present invention: after system powered on, the automatic load module of ARM9 processor started, and each function module circuit initialization is entered holding state S0; Device is to each function module circuit self check, and S1 normally then gets the hang of; Processor (ARM9) is by touch-screen or Ethernet or SD clamping receipts external parameter and order, and send a signal to each function module circuit in the device, and detect Electric Machine Control voltage, motor speed, fluid flow, liquid level etc., it is defined as state S2, S2 is the work normality, up to cutting off the electricity supply or occurring unusual; System exception is then reported to the police and disable motor, and it is defined as state S3.
Claims (2)
1. the micro liquid accurate control device of adding, this device comprises:
One ARM9 processor is used for the control of device core and calculates;
One color LCD shows and touch-screen, is used for device menu demonstration and control curve display; And, be used for the input of device man-machine conversation and information as soft-touch control;
One ethernet interface circuit is used for device and is connected to LAN (Local Area Network) and remote upgrade and maintenance;
The mobile power that provides of device liquid is provided one precision electric motor;
One speed monitoring circuit is used for device buncher speed and detects;
One flow testing circuit is used for monitoring of device fluid flow and abnormal conditions monitoring;
One level monitoring circuit is used for the monitoring of device liquid level abnormal conditions;
One warning circuit is used for device startup self-detection, fluid flow and reaches scarce liquid abnormal conditions audible alarm unusually;
One SD card interface circuit is used for storage of device key parameter and production process parameters record;
One usb circuit is used for device debugging and software upgrading;
One PWMDAC circuit is used for the device Electric Machine Control;
One SDRAM memory circuitry is used for the device dynamic data storage;
One procedure stores circuit flash is used for the device procedure stores;
One Electric Machine Control interface circuit is used for device and Electric Machine Control interface and protection;
Described device is a core with the ARM9 processor, and is interconnected and realize the precision control that micro liquid adds by software programming between ARM9 and color LCD display screen, touch-screen, pwm circuit, Electric Machine Control interface circuit, usb circuit, SD card interface circuit, ethernet interface circuit, speed monitoring circuit, flow detection circuit, level monitoring circuit and the warning circuit.
2. the precision control method that adds of a micro liquid is characterized in that this method comprises:
A), link claim 1 described control device is in product line, and also debugging flow detector, leve monitor and alarm is installed, power on then;
B), the ARM9 processor carries out initialize routine, and color LCD display screen, soft-touch control, pwm circuit, Electric Machine Control interface circuit, usb circuit, SD card interface circuit, ethernet interface circuit, speed monitoring circuit, flow detection circuit, level monitoring circuit and warning circuit are put original value; To the control device self check, and send out the prompting of normal signal and control device normal sound to production line control center by Ethernet;
C), by the control device touch-screen, the liquid controlled variable is set, from the SD card, loads the parametric line that prestores by interface circuit, import in real time or import by production line control center by Ethernet;
D), the ARM9 processor produces special P WM signal according to input parameter, this pwm signal is converted into high-precision motor speed control signal through the PWMDAC circuit; ARM9 starts the ADC that carries on it this control signal is carried out feedback sample, improves precision;
E), the ARM9 processor detects the motor speed feedback signal from the speed monitoring device, and presets the control curve ratio, and adjusts PWM frequency and dutycycle, makes fluid flow meet the control accuracy requirement;
F), the ARM9 processor detects the flow signal from the flow detection circuit, and is normal, works on, if note abnormalities, control device is reported to the police and is reported to the police to production line control center by Ethernet, and cuts off motor power;
G), the ARM9 processor detects the flow signal from leve monitor, normally works on, if note abnormalities, control device is reported to the police and is reported to the police to production line control center by Ethernet, and cuts off motor power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101905281A CN101833293B (en) | 2010-06-01 | 2010-06-01 | Precision control method and device for adding micro-liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101905281A CN101833293B (en) | 2010-06-01 | 2010-06-01 | Precision control method and device for adding micro-liquid |
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| Publication Number | Publication Date |
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| CN101833293A true CN101833293A (en) | 2010-09-15 |
| CN101833293B CN101833293B (en) | 2011-11-02 |
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| CN2010101905281A Expired - Fee Related CN101833293B (en) | 2010-06-01 | 2010-06-01 | Precision control method and device for adding micro-liquid |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102681555A (en) * | 2012-05-28 | 2012-09-19 | 上海第二工业大学 | High-precision control system for liquid ejecting device |
| CN103499988A (en) * | 2013-09-26 | 2014-01-08 | 常州市新创复合材料有限公司 | Control method and device for hot press molding temperature of multilayered compound equipment of thermoplastic sheet materials |
| CN103529882A (en) * | 2013-10-24 | 2014-01-22 | 重庆烟草滤嘴材料厂 | Controller and control method of automatic filter perfuming machine |
| CN103723670A (en) * | 2014-01-16 | 2014-04-16 | 浙江中烟工业有限责任公司 | Online real-time detection type flavoring system |
| CN109165700A (en) * | 2018-10-18 | 2019-01-08 | 广州智颜科技有限公司 | A kind of extrusion control method of beautifying liquid, apparatus and system |
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| CN1089372A (en) * | 1993-07-14 | 1994-07-13 | 核工业理化工程研究院 | Controller for mass flow of materials |
| CN1262907A (en) * | 1999-02-10 | 2000-08-16 | 中国科学院成都计算机应用研究所 | Control method of flavour addition in material and its application |
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2010
- 2010-06-01 CN CN2010101905281A patent/CN101833293B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS60263218A (en) * | 1984-06-12 | 1985-12-26 | Ishikawajima Harima Heavy Ind Co Ltd | Flow rate control device |
| CN1089372A (en) * | 1993-07-14 | 1994-07-13 | 核工业理化工程研究院 | Controller for mass flow of materials |
| CN1262907A (en) * | 1999-02-10 | 2000-08-16 | 中国科学院成都计算机应用研究所 | Control method of flavour addition in material and its application |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102681555A (en) * | 2012-05-28 | 2012-09-19 | 上海第二工业大学 | High-precision control system for liquid ejecting device |
| CN102681555B (en) * | 2012-05-28 | 2015-04-01 | 上海第二工业大学 | High-precision control system for liquid ejecting device |
| CN103499988A (en) * | 2013-09-26 | 2014-01-08 | 常州市新创复合材料有限公司 | Control method and device for hot press molding temperature of multilayered compound equipment of thermoplastic sheet materials |
| CN103529882A (en) * | 2013-10-24 | 2014-01-22 | 重庆烟草滤嘴材料厂 | Controller and control method of automatic filter perfuming machine |
| CN103529882B (en) * | 2013-10-24 | 2016-04-27 | 重庆烟草滤嘴材料厂 | Filter tip automatic perfume adding machine controller and control method thereof |
| CN103723670A (en) * | 2014-01-16 | 2014-04-16 | 浙江中烟工业有限责任公司 | Online real-time detection type flavoring system |
| CN103723670B (en) * | 2014-01-16 | 2016-03-30 | 浙江中烟工业有限责任公司 | A kind of flavoring system of on-line real-time measuremen |
| CN109165700A (en) * | 2018-10-18 | 2019-01-08 | 广州智颜科技有限公司 | A kind of extrusion control method of beautifying liquid, apparatus and system |
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| CN101833293B (en) | 2011-11-02 |
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