CN102560940B - Device and method for online detection of dye liquor concentration by dual-wavelength spectrophotometry - Google Patents
Device and method for online detection of dye liquor concentration by dual-wavelength spectrophotometry Download PDFInfo
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- CN102560940B CN102560940B CN 201210007222 CN201210007222A CN102560940B CN 102560940 B CN102560940 B CN 102560940B CN 201210007222 CN201210007222 CN 201210007222 CN 201210007222 A CN201210007222 A CN 201210007222A CN 102560940 B CN102560940 B CN 102560940B
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Abstract
The invention discloses a device and a method for online detection of dye liquor concentration by dual-wavelength spectrophotometry. The device comprises an ARM7-based control system, double monochromators, an SIA (sequential injection analysis) system and a circuit system. The device and method can be used for real-time online monitoring of concentration of dye liquor in small, medium and large-sized dye vats, has the function of temperature measurement, and also has the functions of recording and displaying detection data, sending out warning messages when a set concentration range is exceeded, and the like. The whole system has the advantages of simple structure, operational convenience, measurement accuracy, timeliness in information feedback, high operating efficiency and the like.
Description
Technical field
The invention belongs to textile printing and dyeing and automatically control detection field, specifically a kind of dye liquor concentration on-line measuring device and method of dual-wavelength spectrophotometry.
Background technology
At present, China's printing and dyeing enterprise is also not overripened at machine automatization control detection field, automaticity is lower, and half leans on most printing and dyeing enterprise is not high equipment machining control and processing of automaticity, and half leans on is that experienced printing and dyeing engineer carries out corresponding dyeing and printing process and processes.The mode of operation that this semi-automation half is artificial, so that production efficiency reduces and the quality of quality that product presents depends on artificial experience to a large extent, poor stability, accuracy are low.Therefore, be necessary to improve the automaticity of printing and dyeing, thereby the key of its automation is each parameter in the dye liquor to be detected according to the data result judgement that detects make corresponding actions.Detection to the parameters in the dye liquor in textile printing and dyeing is very important, parameter request is controlled in the mechanization of printing and dyeing included temperature, concentration, pH value, liquid level etc., and the variation of these parameters all can have influence on the quality of product.Present dyeing and finishing technology mostly to the monitoring of temperature and speed aspect, also has monitoring to moisture percentage, pH value, but online detection but is blank out to the closely bound up dye liquor concentration of accurate dyeing.Therefore, be necessary to develop a kind of device that can the on-line real time monitoring dye liquor concentration, for printing and dyeing enterprise enhance productivity and precisely dyeing service is provided.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides a kind of dye liquor concentration on-line measuring device and method of dual-wavelength spectrophotometry.
A kind of dye liquor concentration on-line measuring device of dual-wavelength spectrophotometry, it is characterized in that it comprises mechanical part, light path part and circuit part, described mechanical part comprises stepper motor and sine mechanism, described light path part comprises two independently monochromators, light path system is set in the monochromator, light path system comprises diffraction grating, the plano-concave spherical reflector, circuit part comprises voltage-stabilized power supply, stepper motor driving circuit, signal conditioning circuit, the pump control module, the selector valve control module, described stepper motor driving circuit is connected with stepper motor, stepper motor is connected with sine mechanism, sine mechanism is connected with diffraction grating, host computer PC is connected with slave computer ARM7TDMIS, slave computer ARM7TDMIS is connected with signal conditioning circuit with stepper motor driving circuit respectively, slave computer ARM7TDMIS is also by the pump control module, the selector valve control module is connected with the SIA system, signal conditioning circuit is connected with photoelectric sensor with temperature sensor respectively, described monochromator is connected with floating cuvette respectively, floating cuvette respectively with the SIA system, temperature sensor is connected with photoelectric sensor.
Described checkout gear is characterized in that described SIA system comprises two-way pump, selector valve and reservoir, and two-way pump is connected with selector valve, and selector valve is connected with reservoir.
Described checkout gear is characterized in that described host computer PC is connected with the CAN fieldbus.
The dye liquor concentration online test method of described checkout gear is characterized in that comprising the steps:
1) on host computer PC, sets successively time, two-way pump slewing rate, direction transformation frequency and running time, the light path system medium wavelength size that stream cleans in the SIA system;
2) operation checkout gear, host computer PC sends to slave computer ARM7TDMIS zeroing order, thereby the rotation of slave computer ARM7TDMIS control step driven by motor sine mechanism is rotated the diffraction grating that connects together with sine mechanism, and to a certain degree signal of optical coupler feedback is modulated to zero point to slave computer ARM7TDMIS explanation when turning to;
3) host computer PC sends wavelength and order is set to slave computer ARM7TDMIS, and slave computer ARM7TDMIS drives stepper motor and rotates the wavelength that corresponding step number makes light path reach setting and penetrate from slit;
4) host computer PC sends and cleans the stream order of SIA system, and slave computer ARM7TDMIS cleans according to command execution;
5) host computer PC sends order control and opens the selector valve of SIA system and it is opened lead to dye bath one end, host computer PC sends to order and makes selector valve turn to dilution one end subsequently, then host computer PC sends exploitation speed and the order of direction change frequency of two-way pump, push the dye liquor after the dilution to reservoir by two-way pump, flow into floating cuvette;
6) photoelectric sensor work, collection is also passed through the signal conditioning circuit deal with data, then the data after processing are sent to PC interface display dye liquor concentration, concentration range can be reported to the police if dye liquor concentration exceeds setting, simultaneous temperature working sensor collecting temperature signal is by sending to slave computer ARM7TDNMIS and host computer PC after the signal conditioning circuit processing;
7) repeat above-mentioned steps and operate, the system log (SYSLOG) data are also added up.
Dye liquor concentration on-line measuring device and the method for a kind of dual-wavelength spectrophotometry of the present invention, can be implemented in that large, medium and small scale dye vat production line carries out the real-time online measuring ability to different dye liquor concentrations and with temperature measurement function, and can realize setting concentration range and can realizing the functions such as warning message to the record that detects data, demonstration and to exceeding.That whole system of the present invention has is simple in structure, easy to operate, measure accurately, the information feedback in time, the characteristics such as operating efficiency is high, filled up printing and dyeing enterprise to the online blank that detects of the closely bound up dye liquor concentration of accurate dyeing.
Description of drawings
Fig. 1 is the dye liquor concentration on-line measuring device of dual-wavelength spectrophotometry of the present invention and structure and the principle schematic of method;
Among the figure, 1-host computer PC; 2-slave computer ARM7TDMIS; 3-stepper motor driving circuit; 4-monochromator; 5-voltage-stabilized power supply; 6-SIA system; 7-floating cuvette; 8-photoelectric sensor; 9-signal conditioning circuit; 10-sine mechanism; 11-light path system; 12-stepper motor; 13-two-way pump; 14-selector valve; 15-reservoir; 16-temperature sensor.
The specific embodiment
The present invention is described in detail below in conjunction with accompanying drawing.
As shown in Figure 1, the dye liquor concentration on-line measuring device of dual-wavelength spectrophotometry has mechanical system, circuit unit, light path system.Device of the present invention adopt two independently monochromator produce two bundle different wave lengths, namely use dual-wavelength spectrophotometry, process in conjunction with langbobier law and ARM7 processor data, thereby it is large to eliminate to a great extent mixing dye liquor phase mutual interference or ambient interferences, realizes the measurement of muddy or many components dye liquor concentration.Native system adopts PC control operation mode, and operating personnel do not need very strong professional knowledge and only need to carry out some simple parameter settings at computer interface and just can start easily this device and finish the dye liquor concentration surveying work.
Before starting this device, need at first to guarantee that sensor signal lines and signal conditioning circuit exact connect ion, host computer PC and slave computer ARM7TDMIS(in the circuit unit are the ARM7 processor) by the serial ports exact connect ion, the parts such as diffraction grating, plano-concave spherical reflector do not change between damage, each position in the light path system, the exact connect ions such as selector valve and two-way pump, reservoir, diluent aperture in the SIA system (being sequential injection system).
After inspection work was finished, at first with pump control circuit and signal conditioning circuit energising in drive circuit, slave computer ARM7TDMIS, the SIA system, slave computer ARM7TDMIS was in running status to the operator afterwards, and whole device is in holding state.
Prepare before the operation, the operator need to set at the PC interface suitable systematic parameter, at first need to arrange the time that stream cleans in the SIA system, then two-way pump slewing rate, direction transformation frequency and running time are set, light path system medium wavelength size then is set.Set the later on preorder preparation of whole system of above parameter and finish, system just can carry out measurement of concetration.
The operator clicks the " RUN " button, and host computer PC can be sent to order among the slave computer ARM7TDMIS, the corresponding action of command execution that slave computer ARM7TDMIS sends according to PC according to the program that sets in advance, and the course of work of system is as follows:
At first this device receives the zeroing order that is sent to slave computer ARM7TDMIS by host computer PC, thereby the rotation of slave computer ARM7TDMIS control step driven by motor sine mechanism is rotated the grating that connects together with sine mechanism, and to a certain degree signal of optical coupler feedback is modulated to zero point to slave computer ARM7TDMIS explanation when turning to.And then host computer PC sends wavelength and order is set to slave computer ARM7TDMIS, and slave computer ARM7TDMIS calculates according to programming and drives stepper motor and rotate the wavelength that certain step number just can make light path reach setting and penetrate from slit.
Then, host computer PC sends and cleans the stream order of SIA system, the time that slave computer ARM7TDMIS cleans according to command execution.The order of afterwards host computer PC transmission is exploitation speed, the order of direction change frequency of pump, and slave computer ARM7TDNMIS is repeatedly fill order action constantly, until occur ceasing and desisting order or reset command.At first sending order control by host computer PC opens the selector valve of SIA system and it is opened lead to dye bath one end, host computer PC sends to order and makes selector valve turn to dilution one end subsequently, and then push the dye liquor after its dilution to reservoir by two-way pump, flow into floating cuvette.When after the dye liquor dilution, flowing into floating cuvette, photoelectric sensor is just started working, by the continuous acquisition process data of signal conditioning circuit, then the data after processing are sent to its dye liquor concentration of PC interface display, concentration range can be reported to the police if dye liquor concentration exceeds setting.Simultaneous temperature working sensor collecting temperature signal, by sending to slave computer ARM7TDNMIS and host computer PC after the signal conditioning circuit processing, because SIA system dilution flow rate etc. is brought the hysteresis of time, temperature, this checkout gear can by setting up the model of temperature, concentration and time, flow velocity, have been accomplished the variation of real-time detectable concentration.
Carry out and can again operate by reset key when above step appears in system, after each concentration determination was finished, system automatically recorded and adds up, and statistics can be consulted and used for dyeing scheme in the future provides.
Host computer PC of the present invention can be connected with the CAN fieldbus, realizes that a PC can measure the concentration of the different dye bath dye liquors in different dyehouses.
The above only is preferred embodiment of the present invention, not in order to limiting the present invention, all any modifications of doing within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all is included within protection scope of the present invention.
Claims (4)
1. the dye liquor concentration on-line measuring device of a dual-wavelength spectrophotometry, it is characterized in that it comprises mechanical part, light path part and circuit part, described mechanical part comprises stepper motor (12) and sine mechanism (10), described light path part comprises two independently monochromators (4), light path system (11) is set in the monochromator (4), light path system (11) comprises diffraction grating, the plano-concave spherical reflector, circuit part comprises voltage-stabilized power supply (5), stepper motor driving circuit (3), signal conditioning circuit (9), the pump control module, the selector valve control module, described stepper motor driving circuit (3) is connected with stepper motor (12), stepper motor (12) is connected with sine mechanism (10), sine mechanism (10) is connected with diffraction grating, host computer PC (1) and slave computer ARM7TDMIS(2) be connected, slave computer ARM7TDMIS(2) be connected 9 with stepper motor driving circuit (3) with signal conditioning circuit respectively) be connected, slave computer ARM7TDMIS(2) also by the pump control module, the selector valve control module is connected with SIA system (6), signal conditioning circuit (9) is connected 8 with temperature sensor (16) with photoelectric sensor respectively) be connected, described monochromator (4) is connected with floating cuvette (7) respectively, floating cuvette (7) respectively with SIA system (6), temperature sensor (16) is connected (8) with photoelectric sensor.
2. checkout gear as claimed in claim 1, it is characterized in that described SIA system (6) comprises two-way pump (13), selector valve (14) and reservoir (15), two-way pump (13) is connected with selector valve (14), and selector valve (14) is connected with reservoir (15).
3. checkout gear as claimed in claim 1 is characterized in that described host computer PC (1) is connected with the CAN fieldbus.
4. a right to use requires the dye liquor concentration online test method of 1 described checkout gear, it is characterized in that comprising the steps:
1) on host computer PC (1), sets successively time, two-way pump (13) slewing rate, direction transformation frequency and running time, light path system (11) the medium wavelength size that stream cleans in the SIA system (6);
2) operation checkout gear, host computer PC (1) sends to slave computer ARM7TDMIS(2) the zeroing order, slave computer ARM7TDMIS(2) control step motor (12) drive sine mechanism (10) thus rotation the diffraction grating that connects together with sine mechanism (10) is rotated, when turning to a certain degree signal of optical coupler feedback to slave computer ARM7TDMIS(2) illustrate modulated to zero point;
3) host computer PC (1) sends wavelength and order is set to slave computer ARM7TDMIS(2), slave computer ARM7TDMIS(2) drive stepper motor (12) and rotate the wavelength that corresponding step number makes light path reach setting and penetrate from slit;
4) host computer PC (1) sends and cleans SIA system (6) stream order, slave computer ARM7TDMIS(2) clean according to command execution;
5) host computer PC (1) sends order control and opens the selector valve (14) of SIA system (6) and it is opened lead to dye bath one end, host computer PC (1) sends to order and makes selector valve (14) turn to dilution one end subsequently, then host computer PC (1) sends exploitation speed and the order of direction change frequency of two-way pump (13), push the dye liquor after the dilution to reservoir (15) by two-way pump (13), flow into floating cuvette (7);
6) photoelectric sensor (8) work, collection is also passed through signal conditioning circuit (9) deal with data, then the data after processing are sent to PC interface display dye liquor concentration, concentration range can be reported to the police if dye liquor concentration exceeds setting, simultaneous temperature sensor (16) work collecting temperature signal is by sending to slave computer ARM7TDNMIS(2 after signal conditioning circuit (9) processing) and host computer PC (1);
7) repeat above-mentioned steps and operate, the system log (SYSLOG) data are also added up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210007222 CN102560940B (en) | 2012-01-11 | 2012-01-11 | Device and method for online detection of dye liquor concentration by dual-wavelength spectrophotometry |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201210007222 CN102560940B (en) | 2012-01-11 | 2012-01-11 | Device and method for online detection of dye liquor concentration by dual-wavelength spectrophotometry |
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| CN102560940A CN102560940A (en) | 2012-07-11 |
| CN102560940B true CN102560940B (en) | 2013-10-30 |
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| CN 201210007222 Expired - Fee Related CN102560940B (en) | 2012-01-11 | 2012-01-11 | Device and method for online detection of dye liquor concentration by dual-wavelength spectrophotometry |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102818776A (en) * | 2012-08-08 | 2012-12-12 | 赵晓明 | Dye liquor concentration in-situ on-line monitoring system |
| WO2014179930A1 (en) * | 2013-05-06 | 2014-11-13 | 立信染整机（深圳）有限公司 | Detecting and controlling method for rinsing procedure of dyeing machine |
| CN103439272B (en) * | 2013-08-31 | 2016-12-28 | 浙江泰坦股份有限公司 | Multi-channel multi-component dye liquor concentration detection device based on spectrophotography and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO1999066117A1 (en) * | 1998-06-19 | 1999-12-23 | Crompton & Knowles Corporation | Computer monitored dye bath |
| ITMI20021192A1 (en) * | 2002-05-31 | 2003-12-01 | Loris Bellini S P A | DYEING MACHINE WITH AUTOMATIC IN-LINE CONTROL OF BATH EXHAUST |
| CN202430470U (en) * | 2012-01-11 | 2012-09-12 | 浙江理工大学 | On-line detection device for dye concentration with dual-wavelength spectrophotometric method |
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