CN102864537B - 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 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.In fabrication processes, in a lot of situations, need the yarn in motion to detect, as detected 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 causing and will change the light signal strength that sensor receives it in motion process.According to this motion feature of yarn, can effectively to the yarn of motion and static yarn (or without yarn), distinguish.Otherwise, if yarn in light field relatively uniformly, the diameter information that the light signal strength that sensor receives will reaction yarn, thus the thickness joint that carries out yarn is differentiated.
Traditional clearing and broken yarn detection method, subsequent conditioning circuit is all generally that signal is carried out to detection amplification or rectification, then relatively amplifies output.Wherein discriminator circuit adopts analog circuit to realize conventionally.The shortcoming of simulation clearing circuit is the variation that device aging easily causes parameter, thereby causes cutting by mistake, leaks and the wild effect such as cut, disorderly cut, and wastes time and energy, and has affected the production efficiency of factory.In the discriminating problem of yarn defect, the Mathematical Modeling that all kinds of electronic yarn clearers are identified yarn defect institute foundation is all relatively-stationary, with the naked eye " Intelligent Recognition " ability of yarn defect judgement is compared with technologist, exist larger gap: being that recognition efficiency is not high enough on the one hand, is that the Clearing Curve of yarn defect cannot be done large change on the other hand.
Generally, what broken yarn detected employing is light field heterogeneous, clearing detects and adopts light field relatively uniformly, and this is because the instantaneous variation of amplitude is just considered in the detection of traditional analog circuit to be identified yarn signal, and the jitter feature of yarn is not analyzed on frequency domain.Therefore, traditional simulation discriminator circuit is difficult to clearing and broken yarn detection to carry out integrated control.
At present, open-end spinning frame control system, on original Yarn break checkout gear basis, installs additional after electronic yarn clearer, not only make whole system redundancy complicated, and cost increases substantially.
Summary of the invention
Object 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:
Collect the controller implementation method that clearing and broken yarn detect able to programmeization of one, its controller has Trinitarian function: clearing is differentiated, broken yarn detects, control driving; 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 comprises the following steps:
Step 1. yarn signal extracts: by the sensing module based on lock-in amplifier, extract yarn shake and diameter signal, and be converted to relevant analog signal;
Step 2. yarn signal analysis: the CPU control module by able to programmeization is converted to data signal by AD sample circuit by the analog signal in step 1, and carry out time domain and class frequency-domain analysis, by Intelligent Measurement algorithm judgement yarn running status and yarn defect, differentiated;
Step 3. input/output signal is controlled: according to the yarn signal analysis result in the information of input module, communication module and step 2, control motor drive module and output module and carry out corresponding control command.
In described step 1, sensing module is based on phase lock amplifying technology, and its clearing is differentiated and broken yarn detects a shared sensing device, specific as follows:
(A) by signal generating circuit, provide modulation required carrier signal, and transmitter is carried out to signal modulation;
(B) that in step (A), modulates transmits after 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 step (B) is carried out to frequency-selecting and amplify processing, as the measured signal of phase-locked amplifying circuit;
(D) by phase-shift circuit, the carrier signal in step (A) is carried out to 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 step (C) and step (D) is carried out to phase-locked amplification processing;
(F) by filter circuit, the signal of phase-locked amplification output in step (E) is carried out to filtering processing, obtain relevant analog signal.
In described step 2, the CPU control module of able to programmeization adopts the ladder diagram of embedded Intelligent Measurement algorithm to programme, and has and can input I/O mouth function, specific as follows:
CPU control module adopts 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 user and interrelated logic action.
Beneficial effect of the present invention:
The present invention adopts microprocessor, has the feature of low-power consumption, high-performance, high stability, can realize signal fast processing.
The sensing module of employing based on phase lock amplifying technology, can effectively suppress noise signal, improves to-noise ratio.
Realization, with the detection head that integrates broken yarn and clearing of microcontroller, can be controlled electromagnet, motor execution weaving action nearby, greatly simplifies the architectural framework of weaving controller, reduces costs.
Adopt industrialized figure programming language to programme to cpu controller, change traditional PLC theory, conveniently controller is safeguarded, upgraded, improve the stability of system.
Accompanying drawing explanation
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 communication networking schematic diagram of yarn detection head.
The specific embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are elaborated: the present embodiment is to take the control method of integrated clearing that (PLC) able to programme of the present invention change and break integral to implement 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.DSP control module is joined with sensing module, input module, motor drive module, solenoid actuated module, CAN communication module, power module respectively.
Wherein DSP control module is the core of whole yarn detection head, and the minimum system that comprises 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 high-speed a/d conversion, and (yarn frequency is generally lower than 1kHz, sampling is 10kHz frequently), the data that sampling is obtained 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, controls various types of other yarn of motor weaving; Output I/O port signal, through TLP112 light-coupled isolation, controls repiece electromagnet, carries arm electromagnet, cutting knife electromagnet carries out Yarn splicing or cut defect order; By CAN EBI and upper PLC or PC, communicate, complete 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 to take the high speed signal treatment circuit that lock-in amplifier is core, comprises signal generating circuit, sensing circuit, selective frequency amplifier circuit, phase-shift circuit, phase-locked amplifying circuit, filter circuit.Signal generating circuit is modulated required carrier signal for signal projector provides, and the present embodiment produces f=30KHz by sinusoidal signal generation circuit, and the sinusoidal carrier signal of Vp-p=500mV, to infrared transmitting tube modulate emission; Sensing circuit is for extracting diameter signal and the associated jitter signal of yarn, specifically the infrared emission light after modulation is gathered by light path sheet 1, through yarn, obtain its diameter optical signal, pass through again light path sheet 2, by infrared detector, the optical signal that carries yarn diameter is converted into the signal of telecommunication and carries relative yarn wobble information; Selective frequency amplifier circuit is for filter away high frequency noise signal, for rear end provides comparatively pure yarn diameter signal, after the signal of telecommunication of specifically sensing circuit being processed to gained is amplified by preposition low noise frequency-selective amplifier as the measured signal of lock-in amplifier; Phase-shift circuit is realized the phase shift of modulation signal 0～360 degree, make to be input between the reference signal of phase-locked module and measured signal synchronous, specifically by sinusoidal carrier signal by phase-shift circuit, as the reference signal of lock-in amplifier; Phase-locked amplifying circuit utilizes reference signal frequency relevant to frequency input signal, uncorrelated with noise signal, from very noisy, extract yarn diameter signal, improve certainty of measurement, specifically by lock-in amplifier to inputted same frequency homophase measured signal and reference signal, multiply each other and integral processing, it is coherent detection, useful yarn diameter signal is amplified, and noise and uncorrelated signal are suppressed, thereby has greatly improved the to-noise ratio of signal; Filter circuit is for the direct current composition of filtering front end modulation signal, obtains the signal of telecommunication that is directly proportional to yarn diameter, specifically the signal of phase-locked amplifying circuit output obtained after filter circuit to the relevant analog signal of yarn shake and diameter thereof.
In the present embodiment, dsp controller adopts the trapezoidal pattern programming technology based on extensive PLC, and the core of its software adopts three-tier architecture mode: BootLoader, engine, ladder diagram.Wherein BootLoader is responsible for loading engine and ladder diagram, for electromagnet and motor drive terminal mouth initialize; Engine is responsible for realizing that 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, making to customize special clearing algorithm for different yarn cleaning characteristic curves becomes possibility, simultaneously for user's secondary development provides approach efficiently.
As shown in Figure 3, the present embodiment adopts CAN bus with outside communicating by letter.Each detection head communicates by CAN bus and upper PLC, and whole network is carried out to 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 CAN bus with the form of broadcast frame, detection head according to resulting parameter, controls electromagnet again and motor is carried out weaving order, and the classification of yarn defect is carried out to statistical analysis, through CAN bus, feed back to upper PLC, user can instruct production according to the statistical analysis of yarn defect in man-machine interface.
The core component dsp controller main program of integrated detection head adopts circulation setting, comparison, discriminant approach, and continuous sampling is obtained yarn signal data and judged yarn conditions information; A/D sampling and digital filtering complete in interruption subroutine.Main program to parameter initialization after, judge whether communication mark position arranges, if communications setting is modified to Textile Parameter according to corresponding data; Whether according to the resulting yarn data judgement of sampling, detect in groove is to have yarn, if filoplume, dust are not compensated, parameter is carried out to adaptive correction, if there is the running status that judges yarn simultaneously; If the static yarn repiece of carrying out of yarn is spliced, and return to communication mark judgement, if yarn operation is learnt yarn average reference diameter; According to the data of new sampling, yarn is carried out to state judgement, if yarn produces abnormal broken yarn, enter broken yarn and process, if yarn is in running status, sampled data are carried out to time domain and class frequency-domain analysis, then by corresponding intelligent algorithm, yarn defect is mated; If there is yarn defect to carry out broken yarn processing, if there is no yarn defect, communicates data processing, and wait for new sampled data.
Claims (3)
1. collect the controller implementation method that clearing and broken yarn detect able to programmeization of one, it is characterized in that: controller has Trinitarian function: clearing is differentiated, broken yarn detects, control driving; 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 comprises the following steps:
Step 1. yarn signal extracts: by the sensing module based on lock-in amplifier, extract yarn shake and diameter signal, and be converted to relevant analog signal;
Step 2. yarn signal analysis: the CPU control module by able to programmeization is converted to data signal by A/D sample circuit by the analog signal in step 1, and carry out time domain and class frequency-domain analysis, by Intelligent Measurement algorithm judgement yarn running status and yarn defect, differentiated;
Step 3. input/output signal is controlled: according to the yarn signal analysis result in the information of input module, communication module and step 2, control motor drive module and output module and carry out corresponding control command.
2. controller implementation method as claimed in claim 1, is characterized in that: in described step 1, sensing module is based on phase lock amplifying technology, and its clearing is differentiated and broken yarn detects a shared sensing device, specific as follows:
(A) by signal generating circuit, provide modulation required carrier signal, and transmitter is carried out to signal modulation;
(B) that in step (A), modulates transmits after 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 step (B) is carried out to frequency-selecting and amplify processing, as the measured signal of lock-in amplifier;
(D) by phase-shift circuit, the carrier signal in step (A) is carried out to phase shift, as the reference signal of lock-in amplifier;
(E) by lock-in amplifier, the reference signal in the measured signal in step (C) and step (D) is carried out to phase-locked amplification processing;
(F) by filter circuit, the signal of phase-locked amplification output in step (E) is carried out to filtering processing, obtain relevant analog signal.
3. controller implementation method as claimed in claim 1, is characterized in that: in described step 2, the CPU control module of able to programmeization adopts the ladder diagram of embedded Intelligent Measurement algorithm to programme, and has and can input I/O mouth, specific as follows:
CPU control module adopts 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 user and interrelated logic action.
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| CN104635614B (en) * | 2013-01-29 | 2018-07-06 | 付静 | Reduce the control method and device of spinning frame spinning Yarn break |
| 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 |
| CN105986342A (en) * | 2015-02-15 | 2016-10-05 | 无锡市云可电子有限公司 | Intelligent yarn monitoring device |
| CN105133104B (en) * | 2015-07-30 | 2018-03-13 | 江苏圣蓝科技有限公司 | A kind of on-line checking and the method and its device for removing Compact-spun Yarn grid ring failure yarn defect |
| CN106863893B (en) * | 2017-04-17 | 2019-08-06 | 扬力集团股份有限公司 | A kind of pressure of hot die forging machine 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 |
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| DE102018112801A1 (en) * | 2018-05-29 | 2019-12-05 | Maschinenfabrik Rieter Ag | Method for determining properties of a fiber material at a workstation of a textile machine and a 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 |
| CN112853560B (en) * | 2020-12-31 | 2021-11-23 | 盐城师范学院 | Global process sharing control system and method based on ring spinning yarn quality |
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