CN102864537A - Realization method of programmable controller integrating yarn cleaning and yarn breaking detection - Google Patents
Realization method of programmable controller integrating yarn cleaning and yarn breaking detection Download PDFInfo
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Abstract
The invention relates to a realization method of a programmable controller integrating yarn cleaning and yarn breaking detection. The controller comprises a CPU (central processing unit) control module, a communication module, a sensing module, an input module, a motor driving module, an output module and a power supply module, wherein the sensing module adopts a phase-locked amplifier for extracting yarn shaking signals and diameter signals, the CPU control module adopts ladder diagrams for development, yarn simulated signals are converted into digital signals through an AD (analog-to-digital) sampling circuit, an embedded intelligent detecting algorithm is used for carrying out time domain and type frequency domain analysis on the yarn digital signals, the output module and the motor driving module are controlled to execute corresponding commands, and the transmitting of spinning parameters is realized through a high-reliability communication bus. Compared with the traditional detecting head, the realization method has the advantages that the system structure of the spinning control is simplified, the cost is reduced, and the system stability is improved.
Description
Technical field
The invention belongs to the control technology field, particularly a kind of controller implementation method that collects able to programmeization of clearing and broken yarn detection one.
Background technology
In the evolution of textile industry, various advanced detection techniques have obtained using widely, particularly photoelectric detecting technology.Need the yarn in the motion is detected in a lot of situations in the fabrication processes, as detecting Yarn break, visit latitude, differentiating thickness joint etc.The flexibility that yarn has can with certain frequency jitter, when light field is uneven, is shaken the evolution that causes and will change the light signal strength that sensor receives it in motion process.Can effectively distinguish the yarn of motion and static yarn (or without yarn) according to this motion feature of yarn.Otherwise if yarn is in the relatively uniform light field, the light signal strength that sensor receives will react the diameter information of yarn, thereby the thickness joint that carries out yarn is differentiated.
Traditional clearing and broken yarn detection method, subsequent conditioning circuit generally all are that signal is carried out detection amplification or rectification, then relatively amplify output.Wherein discriminator circuit adopts analog circuit to realize usually.The shortcoming of simulation clearing circuit is the variation that device aging easily causes parameter, thereby causes mistake to cut, leak and the wild effect such as cut, disorderly cut, and wastes time and energy, and has affected the production efficiency of factory.On the discriminating problem of yarn defect, the Mathematical Modeling that all kinds of electronic yarn clearers are identified yarn defect institute foundation all is relatively-stationary, with the naked eye " Intelligent Recognition " ability that the yarn defect is judged is compared with the technologist, exist larger gap: being that recognition efficiency is not high enough on the one hand, is that the Clearing Curve of yarn defect can't be done large change on the other hand.
Generally speaking, what broken yarn detected employing is light field heterogeneous, clearing detects and then adopts relatively uniformly light field, and this is because the instantaneous variation of amplitude is just considered in the detection of traditional analog circuit to be come yarn signal is identified, and the jitter feature of yarn is not analyzed at frequency domain.Therefore, traditional simulation discriminator circuit is difficult to clearing and broken yarn detection are carried out integrated control.
At present, the open-end spinning frame control system on original Yarn break checkout gear basis, install electronic yarn clearer additional after, not only so that whole system is redundant complicated, and cost increases substantially.
Summary of the invention
Purpose of the present invention is exactly for the deficiencies in the prior art, and a kind of controller implementation method that collects able to programmeization of clearing and broken yarn detection one is provided.
The technical scheme that technical solution problem of the present invention is taked:
A kind of controller implementation method that collects able to programmeization of clearing and broken yarn detection one, its controller has Trinitarian function: clearing is differentiated, broken yarn detects, control drives; This controller comprises sensing module, CPU control module, input module, motor drive module, output module, communication module, power module, and described CPU control module is joined with sensing module, input module, motor drive module, output module, communication module, power module respectively; This controller implementation method may further comprise the steps:
Step 1. yarn signal extracts: extract yarn shake and diameter signal by the sensing module based on lock-in amplifier, and be converted to relevant analog signal;
The analysis of step 2. yarn signal: the CPU control module by able to programmeization is data signal by the AD sample circuit with the analog signal conversion in the step 1, and carries out time domain and class frequency-domain analysis, judges yarn running status and the discriminating of yarn defect by the Intelligent Measurement algorithm;
The control of step 3. input/output signal: according to the information of input module, communication module and the yarn signal analysis result in the step 2, control motor drive module and output module are carried out corresponding control command.
Sensing module is based on phase lock amplifying technology in the described step 1, and its clearing is differentiated and broken yarn detects shared sensing device, and is specific as follows:
(A) provide modulation required carrier signal by signal generating circuit, and transmitter is carried out the signal modulation;
That (B) modulates in the step (A) transmits through behind the yarn, is obtained diameter signal and the associated jitter signal of yarn by receiver;
(C) by frequency-selective amplifier the resulting signal of receiver in the step (B) is carried out frequency-selecting and amplify processing, as the measured signal of phase-locked amplifying circuit;
(D) by phase-shift circuit the carrier signal in the step (A) is carried out phase shift, as the reference signal of phase-locked amplifying circuit;
(E) by phase-locked amplifying circuit the reference signal in the measured signal in the step (C) and the step (D) being carried out phase-locked amplification processes;
(F) signal of by filter circuit phase-locked amplification in the step (E) being exported carries out filtering and processes the analog signal that obtains being correlated with.
The CPU control module of able to programmeization adopts the ladder diagram of embedded Intelligent Measurement algorithm to programme in the described step 2, has to input I/O mouth function, and is specific as follows:
The CPU control module adopts the three-tier architecture mode: BootLoader, engine, ladder diagram;
BootLoader is responsible for hardware port, and just making and engine, ladder diagram load;
Engine is responsible for realizing the support of plate level, for ladder diagram provides calling interface;
The realization of the Intelligent Measurement algorithm that ladder diagram designs for the user and interrelated logic action.
Beneficial effect of the present invention:
The present invention adopts microprocessor, has the characteristics of low-power consumption, high-performance, high stability, can realize the signal fast processing.
Employing is based on the sensing module of phase lock amplifying technology, can the establishment noise signal, and the property the improved ratio of making an uproar.
Realization can be controlled electromagnet, motor execution weaving action nearby with the detection head that integrates broken yarn and clearing of microcontroller, greatly simplifies the architectural framework of weaving controller, the reduction cost.
Adopt industrialized figure programming language that cpu controller is programmed, change traditional PLC theory, conveniently controller is safeguarded, upgraded, improve Systems balanth.
Description of drawings
Fig. 1 is the implementation structure block diagram based on DSP kernel controller;
Fig. 2 is sensing module internal structure block diagram;
Fig. 3 is the Program-staged configuration diagram based on the DSP kernel;
Fig. 4 is the communication networking schematic diagram of yarn detection head;
Fig. 5 is the main program block diagram of dsp controller.
The specific embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated: the present embodiment is that the control method of the integrated clearing changed take (PLC) able to programme of the present invention and break integral is implemented as prerequisite; below provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
As shown in Figure 1, the present embodiment comprises sensing module, DSP control module (CPU control module), input module, motor drive module, solenoid actuated module (output module), CAN communication module, power module.The DSP control module is joined with sensing module, input module, motor drive module, solenoid actuated module, CAN communication module, power module respectively.
Wherein the DSP control module is the core of whole yarn detection head, comprises the minimum system of dsp controller, comprises AD sample circuit, reset circuit, jtag circuit, clock circuit, power-down protection circuit and DSP kernel controller.
Dsp controller can obtain yarn signal by the high-speed a/d conversion, and (the yarn frequency generally is lower than 1kHz, sampling is 10kHz frequently), the data that sampling obtains are carried out time domain and class frequency-domain analysis, extract associated eigenvalue, adopt intelligent algorithm (BP neutral net, EMD and SVM etc.) to judge yarn run signal and yarn defect classification coupling; Output duty cycle and frequency be adjustable pwm pulse at any time, through the isolation of TLP116 high speed photo coupling, and various types of other yarn of control motor weaving; Output I/O port signal, through the TLP112 light-coupled isolation, control repiece electromagnet, carry the arm electromagnet, the cutting knife electromagnet is carried out Yarn splicing or is cut the defect order; Communicate by CAN EBI and upper PLC or PC, finish the transmission of Textile Parameter or to yarn detection head online programming.Power module, solenoid actuated module, motor drive module adopt mature technology.
As shown in Figure 2, be the internal structure schematic diagram of sensing module.Sensing module is the high speed signal treatment circuit take lock-in amplifier as core, comprises signal generating circuit, sensing circuit, selective frequency amplifier circuit, phase-shift circuit, phase-locked amplifying circuit, filter circuit.Signal generating circuit provides modulation required carrier signal for signal projector, and the present embodiment produces f=30KHz by sinusoidal signal generation circuit, and the sinusoidal carrier signal of Vp-p=500mV is to the infrared transmitting tube modulate emission; Sensing circuit is used for extracting diameter signal and the associated jitter signal of yarn, infrared emission light after specifically will modulating gathers by light path sheet 1, obtain its diameter optical signal through yarn, pass through light path sheet 2, the optical signal that will be carried yarn diameter by infrared detector is converted into the signal of telecommunication and carries the relative yarn wobble information again; Selective frequency amplifier circuit is used for the filter away high frequency noise signal, and for the rear end provides comparatively pure yarn diameter signal, the signal of telecommunication of specifically sensing circuit being processed gained amplifies rear measured signal as lock-in amplifier by preposition low noise frequency-selective amplifier; Phase-shift circuit is realized the phase shift of modulation signal 0～360 degree so that be input between the reference signal of phase-locked module and the measured signal synchronously, specifically with sinusoidal carrier signal by phase-shift circuit, as the reference signal of lock-in amplifier; Phase-locked amplifying circuit utilizes reference signal frequency relevant with frequency input signal, uncorrelated with noise signal, from very noisy, extract the yarn diameter signal, improve certainty of measurement, specifically by same frequency homophase measured signal and the reference signal of lock-in amplifier to inputting, multiply each other and integral processing, it is coherent detection, useful yarn diameter signal is amplified, and noise and uncorrelated signal are then suppressed, the ratio thereby the property that has greatly improved signal is made an uproar; Filter circuit is used for the direct current composition of filtering front end modulation signal, obtains the signal of telecommunication that is directly proportional with yarn diameter, specifically the signal of phase-locked amplifying circuit output is obtained the relevant analog signal of yarn shake and diameter thereof behind filter circuit.
As shown in Figure 3, dsp controller adopts the trapezoidal pattern programming technology based on extensive PLC in the present embodiment, and the core of its software adopts the three-tier architecture mode: BootLoader, engine, ladder diagram.Wherein BootLoader is responsible for loading engine and ladder diagram, for electromagnet and motor-driven port initialize; Engine is responsible for realizing that the plate level is supported, task scheduling, and provides calling interface for ladder diagram; Ladder diagram is responsible for practical application and designs corresponding algorithm and course of action.By trapezoidal pattern programming, guarantee the uniformity of logic control program, become possibility so that customize special clearing algorithm for different yarn cleaning characteristic curves, provide efficiently approach for user's secondary development simultaneously.
As shown in Figure 4, the present embodiment adopts the CAN bus with outside communicating by letter.Each detection head communicates by CAN bus and upper PLC, and whole network is carried out networking, and baud rate is 9600bps, adopts the logical agreement of Mod-bus.During work, the Textile Parameter that upper PLC sets according to man-machine interface is dealt into each detection head by the CAN bus with the form of broadcast frame, detection head is carried out the weaving order according to resulting parameter control electromagnet and motor again, and the classification of yarn defect carried out statistical analysis, feed back to upper PLC through the CAN bus, the user can instruct production according to the statistical analysis of yarn defect on man-machine interface.
The core component dsp controller main program flow of integrated detection head as shown in Figure 5.Main program adopts circulation setting, comparison, discriminant approach, and continuous sampling is obtained the yarn signal data and judged yarn conditions information; A/D sampling and digital filtering are finished in interruption subroutine.Main program to parameter initialization after, judge whether the communication mark position arranges, if communications setting is then made amendment to Textile Parameter according to corresponding data; Judge to detect in the groove whether yarn is arranged according to the resulting yarn data of sampling, if then filoplume, dust are not compensated, simultaneously parameter is carried out adaptive correction, if the running status of then judging yarn is arranged; If the static yarn repiece of then carrying out of yarn is spliced, and return communication mark and judge, if the yarn operation is then learnt yarn average reference diameter; According to the data of new sampling yarn being carried out state judges, if yarn produces unusual broken yarn, then enter broken yarn and process, if yarn is in running status, then the data that sample are carried out time domain and class frequency-domain analysis, by corresponding intelligent algorithm the yarn defect is mated again; Process if there is the yarn defect then to carry out broken yarn, if there is not the yarn defect, then communicates data and process, and wait for new sampled data.
Claims (3)
1. one kind collects the controller implementation method that clearing and broken yarn detect able to programmeization of one, and it is characterized in that: controller has Trinitarian function: clearing is differentiated, broken yarn detects, control drives; This controller comprises sensing module, CPU control module, input module, motor drive module, output module, communication module, power module, and described CPU control module is joined with sensing module, input module, motor drive module, output module, communication module, power module respectively; This controller implementation method may further comprise the steps:
Step 1. yarn signal extracts: extract yarn shake and diameter signal by the sensing module based on lock-in amplifier, and be converted to relevant analog signal;
The analysis of step 2. yarn signal: the CPU control module by able to programmeization is data signal by the AD sample circuit with the analog signal conversion in the step 1, and carries out time domain and class frequency-domain analysis, judges yarn running status and the discriminating of yarn defect by the Intelligent Measurement algorithm;
The control of step 3. input/output signal: according to the information of input module, communication module and the yarn signal analysis result in the step 2, control motor drive module and output module are carried out corresponding control command.
2. controller implementation method as claimed in claim 1, it is characterized in that: sensing module is based on phase lock amplifying technology in the described step 1, and its clearing differentiates to detect with broken yarn and share a sensing device, and is specific as follows:
(A) provide modulation required carrier signal by signal generating circuit, and transmitter is carried out the signal modulation;
That (B) modulates in the step (A) transmits through behind the yarn, is obtained diameter signal and the associated jitter signal of yarn by receiver;
(C) by frequency-selective amplifier the resulting signal of receiver in the step (B) is carried out frequency-selecting and amplify processing, as the measured signal of phase-locked amplifying circuit;
(D) by phase-shift circuit the carrier signal in the step (A) is carried out phase shift, as the reference signal of phase-locked amplifying circuit;
(E) by phase-locked amplifying circuit the reference signal in the measured signal in the step (C) and the step (D) being carried out phase-locked amplification processes;
(F) signal of by filter circuit phase-locked amplification in the step (E) being exported carries out filtering and processes the analog signal that obtains being correlated with.
3. controller implementation method as claimed in claim 1, it is characterized in that: the CPU control module of able to programmeization adopts the ladder diagram of embedded Intelligent Measurement algorithm to programme in the described step 2, has and can input I/O mouth function, and is specific as follows:
The CPU control module adopts the three-tier architecture mode: BootLoader, engine, ladder diagram;
Described BootLoader is responsible for hardware port, and just making and engine, ladder diagram load;
Described engine is responsible for realizing the support of plate level, for ladder diagram provides calling interface;
The realization of the Intelligent Measurement algorithm that described ladder diagram designs for the user and interrelated logic action.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103510215A (en) * | 2013-09-17 | 2014-01-15 | 吴江永固纺配有限公司 | Intelligent yarn breaking detection device |
| CN103614827A (en) * | 2013-11-27 | 2014-03-05 | 太仓仕禾线网制造有限公司 | Human-computer interface automatic thread breakage prompt alarm realizing method |
| CN105133104A (en) * | 2015-07-30 | 2015-12-09 | 江苏圣蓝科技有限公司 | Method and apparatus for online detecting and cleaning up compact spinning yarn grid ring failure yarn faults |
| CN105986342A (en) * | 2015-02-15 | 2016-10-05 | 无锡市云可电子有限公司 | Intelligent yarn monitoring device |
| CN106863893A (en) * | 2017-04-17 | 2017-06-20 | 扬力集团股份有限公司 | A kind of hotdie forging press control system |
| CN107059169A (en) * | 2017-05-08 | 2017-08-18 | 李先登 | The method that spinning fault is reduced with the second drafting theory |
| CN104635614B (en) * | 2013-01-29 | 2018-07-06 | 付静 | Reduce the control method and device of spinning frame spinning Yarn break |
| CN108516678A (en) * | 2018-03-23 | 2018-09-11 | 烽火通信科技股份有限公司 | Design method in fiber drawing tower |
| CN109267195A (en) * | 2018-08-31 | 2019-01-25 | 安徽日发纺织机械有限公司 | A kind of rotor spinning machine yarn break sensor and electric clear combination system |
| CN112313371A (en) * | 2018-05-29 | 2021-02-02 | 里特机械公司 | Method for determining properties of fiber material on workstation of textile machine and textile machine |
| CN112853560A (en) * | 2020-12-31 | 2021-05-28 | 盐城师范学院 | Global process sharing control system and method based on ring spinning yarn quality |
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| CN108516678A (en) * | 2018-03-23 | 2018-09-11 | 烽火通信科技股份有限公司 | Design method in fiber drawing tower |
| CN108516678B (en) * | 2018-03-23 | 2021-03-16 | 烽火通信科技股份有限公司 | System design method in optical fiber drawing tower |
| CN112313371A (en) * | 2018-05-29 | 2021-02-02 | 里特机械公司 | Method for determining properties of fiber material on workstation of textile machine and textile machine |
| CN109267195A (en) * | 2018-08-31 | 2019-01-25 | 安徽日发纺织机械有限公司 | A kind of rotor spinning machine yarn break sensor and electric clear combination system |
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