CN102995193A - Yarn breakage detection method and yarn breakage detection device using method - Google Patents
Yarn breakage detection method and yarn breakage detection device using method Download PDFInfo
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Abstract
The invention discloses a yarn breakage detection method applied to a ring throstle and a yarn breakage detection device using the method. The yarn breakage detection method is characterized in that a microcontroller controls a voice sensor to acquire a voice signal at the outer side of a steel collar during spinning; if the detected voice signal always has pretty high wave peaks at every moment when a bead ring approaches to the voice sensor relative to the moment when the bead ring is pretty far away from the voice senor and the wave peak occurrence frequency is slightly lower than a spindle rotation frequency, the yarn at the spinner position has no breakage, otherwise, the yarn at the spinner position has breakage; preferably, the voice sensor is at the position on the same horizontal plane as or slightly higher than the steel collar in a vertical height direction; and the minimal distance in the level direction from the voice sensor to the axis in the vertical direction of the steel collar is greater than the maximal outer diameter of a movement locus of the bead ring and a movement locus of a yarn ballooning. The yarn breakage detection device disclosed by the invention is designed according to the yarn breakage detection method disclosed by the invention.
Description
Technical field
The present invention relates to the spinning end breaking detection field in the spun yarn spinning process, be specially the spinning end breaking checkout gear of a kind of spinning end breaking detection method and application the method, the method and device thereof are used for ring throstle.Described spinning end breaking detection method can detect the spinning end breaking that occurs in the ring throstle spinning process; The spinning end breaking checkout gear of described application the method is installed on the ring throstle, and move along the ring rail of spinning machine length direction, in moving process, detect the spinning end breaking that occurs in the spinning process and the concrete ingot position information that will occur to break end is presented to the spun yarn spinner.
Background technology
In each operation of spinning, the spinning process amount of labour used is maximum, and spun yarn spinner's major responsibility is to check and process broken end, and check that wherein broken end has taken its a large amount of working time, when especially spinning dark yarn, because yarn color and environment approach, increased the difficulty that broken end checks.In order to reduce spun yarn spinner's labour intensity, and reduce the amount of labour used, need to automatically detect spinning end breaking, and notify the spinner to process testing result.
Utility model patent " yarn broken ends inspector " (application number 02265359.7) is installed in heat-sensitive sensor on twizzle or the rings, and detect by the frictional heat that heat-sensitive sensor detects the friction of yarn and twizzle and rings and steel traveler and whether to break end, the method needs each spindle sensor installation, invests larger.Utility model patent " yarn broken ends inspector " (application number 200520080973.7) discloses a kind of yarn broken ends inspector, photoelectric sensor is installed in the roller stand two ends, the ray that photoelectric sensor sends is by the lower edge of front leather roller, behind Yarn break, detect existing flyings and twine the roller phenomenon with photoelectric sensor, and use the signal feedback device that links to each other with photoelectric sensor to send the broken end indication, the method is subject to the impact of flyings in the environment, and there is undetected possibility, and can't judges the concrete ingot position that broken end occurs.Utility model patent " the spun yarn thread-carrier with Yarn break checkout gear " (application number 200520045862.2) utilizes the twizzle of particular design to detect Yarn break, a photoelectric sensor is installed on each twizzle, photoelectric sensor sends signal to controller during broken end, the method needs each ingot position that a detecting element is installed equally, and cost is higher.Utility model patent " a kind of spun yarn detects broken end, automatic piecing arrangement automatically " (application number 201220009611.9) is at other guide rail and the travelling car set up of ring rail, travelling car is reciprocating motion on guide rail, in the reciprocating motion process, utilize inductance probe to detect the translational speed of steel traveler, thereby detection spinning end breaking, utilize the movement velocity of inductance probe detection steel traveler higher for precision and the installation site required precision thereof of sensor, particularly when steel traveler hour, increased the uncertainty that detects.Photoelectric sensor or pressure sensor that patent of invention " Yarn twisting broken end detecting method for spinning machine " (application number 201210009964.3) utilization is installed on the ring rail detect the signal detection broken end that the steel traveler motion produces, the method equally need to be on each ingot position sensor installation, cost is higher.Application for a patent for invention " a kind of break detecting method " (application number 200910221019.8) is installed a friction piece on the sound pick-up surface, make the sliver of motion or yarn on the friction piece surface through and with the friction piece friction, by sound pick-up detect grating that sliver or warp thread produce on the friction piece surface in motion process have or not realize that broken end detects.Because on-site noise is larger, and grating is very little, and the frequency characteristic of grating can change with the coefficient of friction between yarn tension, fiber and the friction piece, increase the uncertainty of signal filtering, thereby cause being difficult to from noise, extract effective friction signal by the mode of filtering; In addition, the method need to increase friction piece and sound pick-up in the path of sliver or yarn movement, if be used for fine spining machine, need each ingot position to increase by cover friction piece and sound pick-up and a supporting Circuits System, cost will be very high, and the problem of exist to be difficult for installing, therefore also undeclared its concrete friction piece embodiment in its specification is difficult to this invention of the imagination and can be used for the detection of ring throstle broken end.Utility model patent " correlation vapour-pressure type fine spining machine Yarn break testing agency " (application number 201220014294.X) and utility model patent " reflection vapour-pressure type fine spining machine Yarn break testing agency " (application number 201220014311.X) are installed a tracheae shower nozzle and pressure sensor near each rings, utilize pressure sensor to detect steel traveler and rotate the air pressure change that causes, thereby detect spinning end breaking.Utility model patent " photo-electric reflection type fine spining machine Yarn break testing agency " (application number 201220014375.X) and utility model patent " photoelectricity correlation fine spining machine Yarn break testing agency " (application number 201220014683.2) are installed a pair of light source and electro-optical pickoff near each rings, for detection of the motion of steel traveler, thereby detect spinning end breaking.These several patents exist implementation cost high equally, and quantity is large, and the large problem of maintenance difficulties.
Summary of the invention
To the deficiencies in the prior art, the technical problem to be solved in the present invention is that a kind of new spinning end breaking detection method that is used for ring throstle and the spinning end breaking checkout gear of application the method are provided.This spinning end breaking detection method utilizes the method for sound detection and analysis to detect spinning end breaking, has non-cpntact measurement and accuracy in detection high; The spinning end breaking detection method of the present invention of utilizing this apparatus for detection of breaking of yarn realizes the detection of spinning end breaking, have simple in structure, reliable operation, easy to maintenance, to characteristics such as the installation of sensors position accuracy demand are low.
The solution that the present invention solves described spinning end breaking detection method technical problem is: design a kind of spinning end breaking detection method for ring throstle, the voice signal in the rings outside when it is characterized in that utilizing microcontroller to spin by the sound transducer collection, the voice signal that collects is carried out LPF, and the feature of the sound that produces according to steel traveler in the filtered voice signal and rings fricting movement judges whether to have occured spinning end breaking; The feature of the described sound that produces according to steel traveler in the filtered voice signal and rings fricting movement has judged whether to occur that spinning end breaking refers to if filtered voice signal all has with respect to steel traveler apart from sound transducer constantly higher crest far away corresponding to the moment of steel traveler near sound transducer at each, and the frequency of the frequency ratio spindle rotation that this crest occurs is lower slightly, then this ingot position spun yarn does not break end, otherwise broken end has occured in this ingot position spun yarn.Described microcontroller is preferably single-chip microcomputer or embedded controller; Described sound transducer its sound transmission aperture when gathering certain ingot position voice signal is positioned at the corresponding rings outside, this ingot position, be preferably placed at and rings level or the position slightly higher than rings in the plumb height direction, be preferably placed in the horizontal direction the perpendicular rectilinear direction of rings axle center and ring rail length direction, sound transducer is apart from the minimum range in the rings vertical axle center maximum outside diameter greater than steel traveler and ballooning of yarn movement locus in the horizontal direction, be as the criterion not affect normal spinning, be preferably greater than 5-50mm; Described sound transducer can be the sensor of any principles such as condenser type or moving-coil type, be preferably the condenser type sound transducer, described sound transducer is preferably the sensor with hardware low-pass filter circuit, sound transducer can be orthotype or omni-directional sound transducer, be preferably the orthotype sound transducer, to improve the ability that detects the specific direction voice signal, reduce tested ingot position voice signal to be detected the impact that produces with the sound of adjacent ingot position, tested ingot position.
The solution that the present invention solves described spinning end breaking checkout gear technical problem is: design a kind of spinning end breaking checkout gear, it is characterized in that this spinning end breaking checkout gear designs according to spinning end breaking detection method of the present invention, it mainly comprises guide rail 7, driving mechanism 11, guiding mechanism 2, shell 3, sound transducer 9, electric supply installation 10, power panel 14, main circuit board 12, wireless communication module 36, human-computer interaction interface 13; Described shell 3 is that a profile is rectangular-shaped housing, is preferably the metal material housing; Described guide rail 7 utilizes bolt 8 and support 1 to be installed in horizontal direction the side of ring rail 4; Described driving mechanism 11 mainly comprises executive component 111 and driving wheel 116, described driving wheel 116 is installed in an end of live axle 115 and is positioned at the outside of shell 3 bottom surfaces, driving wheel 116 cylindricals are meshed with guide rail 7 sides, live axle 115 passes the brearing bore in the bearing block 114 that is installed on shell 3 bottom surfaces, the other end of live axle 115 is positioned at shell 3 inner chambers and connects with shaft coupling 113, described executive component 111 is direct current generator or stepper motor with reductor, executive component 111 is installed in the inner chamber of shell 3 formation, and utilizing executive component support 112 to be fixed on the inwall of shell 3, its power output shaft links vertically downward and with the shaft coupling 113 of live axle 115 axle heads; Described guiding mechanism 2 mainly comprises directive wheel 22, directive wheel installing plate 24 and directive wheel holddown spring 26, described directive wheel 22 is two rollers, directive wheel 22 is installed at right angle setting on the guide wheel shaft 23 of directive wheel installing plate 24, the outer circumference surface of directive wheel 22 is meshed with the side of guide rail 7, directive wheel installing plate 24 utilizes the hinge 27 parallel with guide rail 7 to be installed in outside shell 3 bottom surfaces and is parallel with shell 3 bottom surfaces, and can rotate around hinge 27, described directive wheel holddown spring 26 is enclosed within on the spring guide 25, side contacts outside directive wheel holddown spring 26 1 ends and shell 3 bottom surfaces, opposite side contacts with the end face of directive wheel installing plate 24, exerts pressure to directive wheel installing plate 24 directive wheel installing plate 24 is pressed on directive wheel 22 on the guide rail 7; Described sound transducer 9 is installed on the relative outside of shell 3 and ring rail 4, and the sound transmission aperture of sound transducer is level or downward-sloping direction is aimed at the rings outside; Described electric supply installation 10 comprises bus 102 and the two electrically conductive elastic compressing tablets 101 that are installed on the guide rail, just connecing dc source on the bus 102, it is negative to connect dc source on the guide rail 7, between bus 102 and the guide rail 7 insulation strip 103 is installed, one end of electrically conductive elastic compressing tablet 101 is abutted against terminal 105 and is installed in the outside, shell 3 bottom surfaces, insulation magnetic support 104 is arranged between binding post 105 and shell 3 bottom surfaces, and the other end of electrically conductive elastic compressing tablet 101 contacts respectively and leans on self elastic compression with bus 102 and guide rail 7; Described power panel 14 mainly comprises battery, charging circuit and mu balanced circuit, and power panel 14 is installed in the inboard of shell 3 bottom surfaces, and power supply links to each other with binding post 105 by wire to be provided; Described main circuit board 12 is installed on shell 3 side inner walls with sound transducer 9 homonymies, and main circuit board 12 mainly comprises audio signal processing circuit, audio signal sample circuit, microcontroller and interface circuit thereof, executive component drive circuit and communication module; Described human-computer interaction interface 13 is installed in the top of shell 3, mainly comprises keyboard and display screen; Described wireless communication module 36 comprises wireless communication line plate 361 and antenna 362, wireless communication line plate 361 is installed in by the main circuit board of shell 3 inboards, link to each other with communication module and the antenna 362 of main circuit board 12 by wire, antenna 362 is installed in the outside of shell side.
Compared with prior art, the present invention is used for the spinning end breaking detection method of ring throstle owing to utilize voice signal to detect spinning end breaking, belong to non-cpntact measurement, and be not subjected to the impact of flyings in the workshop, owing to detecting voice signal with microcontroller and processing, can utilize Digital Signal Processing to avoid in the workshop noise on the impact of measurement result, have stable, be difficult for being disturbed and reliable characteristics.The present invention is used for the device of ring throstle spinning end breaking detection owing to adopt break detecting method of the present invention to detect spinning end breaking, have simple in structure, be easy to safeguard, cost is low and the characteristics being convenient to implement, simultaneously, with respect to other sensor detection modes such as photoelectric sensors, sound transducer requires relatively lowly to the installation site precision, is convenient to implement.
Description of drawings
Fig. 1 detects the voice signal legend that obtains in the spinning end breaking detection method of the present invention.
Fig. 2 is the signal legend behind the voice signal LPF among Fig. 1 of the present invention.
Fig. 3 is the signal legend after the signal conversion among Fig. 2 of the present invention.
Fig. 4 is the energy spectrum of signal among Fig. 3 of the present invention.
Fig. 5 is that spinning end breaking checkout gear of the present invention consists of the schematic diagram front view.
Fig. 6 is that spinning end breaking checkout gear of the present invention consists of the schematic diagram side view.
Fig. 7 is spinning end breaking checkout gear driving wheel of the present invention, directive wheel and guide rail position schematic diagram.
FIG: 1. Stand, 2. Guide mechanism, 22. Guide wheel, 23. Guide shaft, 24. Guide wheel mounting plate 25 of the spring guide rod, 26. Guide rollers compress the spring, 27 Hinge, 3. Case, 4 ring plate, 51. sensor switch 52. spindles steel, 53 ends of spindles steel, 6 ring, 7. rails, 8 bolt, 9. acoustic sensors, 10 powered device, 101. conductive Flexible tablet, 102. conductive strip, 103. insulator strip, 104. insulated magnet, 105. terminal, 11. driving mechanism, 111. actuator, 112. actuator bracket, 113. couplings, 114. bearing Block, 115. driving axle, 116. wheel, 12 main circuit board, 13. interactive interface, 14 power board 15. temperature and humidity sensor, 36 wireless communication module, 361 wireless communication circuit board, 362 antenna.
The specific embodiment
Further narrate the present invention below in conjunction with embodiment and accompanying drawing thereof:
It is the analog quantity audio signal with tested sound mapping that spinning end breaking detection method of the present invention adopts sound transducer, audio signal is carried out obtaining the digital quantity voice signal after the digitized sampling, judge according to the feature of sampling gained digital quantity voice signal whether spun yarn broken end has occured.
Spinning end breaking detection side ratio juris of the present invention: steel traveler and rings have relative motion during spinning, can therefore produce friction sound, during normal spinning, if ignore the impact of twist contraction, the steel traveler rotating speed equals the spindle rotating speed and deducts the front roller sliver exporting speed divided by the girth of spun yarn-winding, therefore, the velocity of rotation of steel traveler on rings is slightly lower than ingot speed, difference between them changes with the variation of spun yarn-winding diameter, if spun yarn breaks end, obviously reduce when then steel traveler and rings stop relative motion or movement velocity than normal spinning (air-flow that steel traveler is produced by the spindle of high speed rotating behind spinning end breaking sometimes promotes and moves at rings, but the movement velocity of movement velocity steel traveler when being significantly less than normal spinning).Although fine spining machine noise when spinning is larger, but the sound that the sound that wherein approaches with steel traveler pivoting friction acoustic frequency only has spindle rotation to produce, because spindle is rolling friction, its sound frequency characteristic and amplitude all are different from the sound of steel traveler fricting movement; In addition, sound transducer is placed on that the outside of rings and rings height maintain an equal level or slightly high position, since the steel traveler of motion and the distance between the sound transducer be approximate periodically (says here the reason that is similar to be velocity of rotation owing to steel traveler in spinning process along with the change of spun yarn-winding radius changes, but variable quantity is less) neglect far away neglect near, therefore, little when large when the steel traveler that sound transducer receives and the meeting of rings grating, when steel traveler moves to when nearest apart from sound transducer, the steel traveler friction sound that sound transducer receives is maximum, so, when sound transducer fair or slightly place, high position gathers the voice signal at this place outside utilization is positioned at rings and with rings, the periodic crest that occurs in short-term of voice signal meeting that is collecting, this crest approaches first corresponding to the steel traveler revolution, then away from the process (as shown in Figure 1) of sound transducer, namely can judge whether to have occured spinning end breaking according to these characteristics that collect voice signal, if this because the frequency that the in short-term crest that the steel traveler motion produces occurs and spindle rotation speed are approaching, then do not break end, otherwise, broken end has occured.
The below provides several specific embodiments of break detecting method of the present invention, and these embodiment only are to the illustrating of spinning end breaking detection method of the present invention, and do not consist of the restriction to claim of the present invention, and the present invention does not address part and is applicable to prior art.
A kind of embodiment of spinning end breaking detection method of the present invention: use dynamic microphones as sound transducer, the output of microphone connects the microphone interface of PC sound card, PC operation Windows operating system, and the voice signal of employing LabView Application and Development software collection microphone, and the digital quantity voice signal that collects processed and analyze, if have in the voice signal because the crest of steel traveler during near sound transducer, and the frequency ratio spindle rotation frequency that this crest occurs is lower slightly, and then broken end has occured spun yarn.Described microphone is positioned near the corresponding rings in this ingot position when gathering certain ingot position voice signal, the sound transmission aperture of microphone is facing to the outer rim of steel traveler sliding rail on the rings, and be preferably placed at the position that maintains an equal level or omit height (preferably exceeding rings 0-60mm) with rings in vertical, be preferably placed in the horizontal direction the perpendicular rectilinear direction of rings axle center and ring rail length direction, microphone is apart from the minimum range in the rings vertical axle center maximum outside diameter greater than steel traveler and air ring movement locus in the horizontal direction, be as the criterion not affect normal spinning, be preferably greater than 5-40mm.
Sample frequency in the present embodiment during collected sound signal is 10kHz, sampling time 1s, design ingot speed 6000rpm, the front roller sliver exporting speed is set as 10m/min, ignores the impact of twist contraction, and calculating spindle and steel traveler rotational frequency poor is 2.65Hz, the voice signal that collects as shown in Figure 1, as can be seen from Figure, obviously have the crest that periodically causes near sound transducer owing to steel traveler in this signal, be slightly larger than 10ms blanking time between the crest; The data that collect are carried out the noise that LPF is removed high frequency, the minimum passband 100Hz of filtering, minimum stopband 200Hz obtains as shown in Figure 2 signal after the filtering, the crest that occurs when this signal can clearerly be found out steel traveler near sound transducer; In order to utilize the feature of the sound variation that whether has this steel traveler motion generation in the Computer Automatic Recognition voice signal, present embodiment carries out conversion to the signal among Fig. 2, and concrete grammar is: establishing filtered voice signal sequence is s
i(i=0,1,2 ... 9999), from i (i=0,1,2 ... 9949) individual element begins, maximum with element between the i to i+50 (herein 50 design half of rotational frequency for spindle) replaces i value, through the signal that obtains after such conversion as shown in Figure 3; Signal shown in Fig. 3 is carried out the Fourier spectrum analysis, obtain the energy spectrum of signal among Fig. 3 as shown in Figure 4, frequency corresponding to power spectrum maximum is 96Hz among the figure, and concentration of energy is at this frequency place, spindle design rotational frequency is 100Hz, the theoretical rotational frequency of steel traveler should be 97.35Hz, but the fine spining machine spindle band during owing to test is pine, cause actual ingot speed to be lower than design ingot speed, therefore, what the frequency that the energy spectral amplitude ratio is the highest among Fig. 4 was corresponding is the steel traveler rotational frequency, more lower slightly than spindle rotation frequency, therefore, spun yarn is broken end not, belongs to normal spinning.When broken end occurs in spun yarn because the steel traveler rotational frequency reduces greatly, and become do not have a rule, the phenomenon that occurs among present embodiment Fig. 1-4 will no longer appear in the voice signal that collects.
Carry out in the present embodiment judging whether broken end with energy spectrum after the Fourier spectrum analysis, do not use amplitude spectrum to replace the energy spectrum judgement of breaking end but do not get rid of.Fourier spectrum analysis of the present invention can be adopted software spectrum analysis and hardware spectrum analysis, generally speaking, the cost of hardware spectrum analyzer system is higher for the software spectrum analysis, sound spectrum analytic function involved in the present invention utilizes the software spectrum analysis to be competent at, therefore, the present invention preferably adopts the software spectrum analysis, but does not get rid of the hardware spectrum analysis of using sweep frequency technique or superhet spectrum analysis technique.Except the Fourier spectrum analysis, the present invention can also adopt the method (quadratic form time-frequency analysis such as the method such as the Linear Time-Frequency Analysis such as Gabor conversion, wavelet transformation or Cohen class time-frequency distributions) of time frequency analysis to obtain voice signal in the Energy distribution at different frequency place, the present invention preferably adopts the Fourier spectrum analytical method, but does not therefore get rid of the distribution of adopting aforementioned Time-Frequency Analysis Method to obtain the voice signal amplitude spectrum.
A kind of modified embodiment of spinning end breaking detection method of the present invention: for the ease of spinning end breaking detection method of the present invention is applied to the fine spining machine production scene, adopt the embedded industrial control board of ARM9 series to replace PC, industrial control board operation (SuSE) Linux OS, adopt C language compilation application program to realize collection and analysis and the spinning end breaking judgement of voice signal, employing is done sound transducer with the omni-directional sound pick-up of power amplifier and wave filter, sound transducer is preferably condenser type in the present embodiment, because condenser type has higher sensitivity than moving-coil type, industrial control board utilizes the analog acquisition card to gather the output signal of sound transducer.This embodiment is when the voice signal that processing collects, also first the voice signal that collects is carried out LPF, obtain the voice signal of similar Fig. 2, because the steel traveler rotational frequency is a little less than the frequency of spindle rotation during normal spinning, if design spindle rotation speed is n rev/min in the sampled voice process, the all required time 60/n of spindle rotation one second then, if the sample frequency during analog acquisition card collected sound signal is f, the number of data points that then collects in spindle rotation 1.5 time-of-weeks is 90f/n, for filtered voice signal, it is divided into some sections, every section length is 90f/n data point, for every one piece of data, checks two peak-to-peak time differences of the highest ripple in this segment data, if should the time difference omit length than spindle rotation one all required times, then spun yarn does not break end.Except signal processing method described in the embodiment of the invention, can also propose many algorithms and be used for identification owing to the described feature of crest described in the voice signal of steel traveler motion generation, and judge whether to have occured spinning end breaking according to this feature, no matter adopt which kind of method, judgement all belongs to the scope of application of the present invention as long as utilize of the present invention because the characteristics of steel traveler motion generation voice signal break end.
The another kind of modified embodiment of spinning end breaking detection method of the present invention: in order further to reduce the cost of using the method, utilize single-chip microcomputer to do controller exploitation control circuit board, in order to reduce tested ingot position voice signal to be detected the adverse effect that produces with the sound of adjacent ingot position, tested ingot position, sound transducer adopts the orthotype sound pick-up with power amplifier and wave filter, the AD passage that the single-chip microcomputer utilization carries detects the analog quantity output signals of sound transducer, and the voice signal after the digitlization is carried out spectrum analysis and broken end analysis.
Spinning end breaking checkout gear of the present invention designs (referring to Fig. 5-7) according to spinning end breaking detection method of the present invention, and it mainly comprises guide rail 7, driving mechanism 11, guiding mechanism 2, shell 3, sound transducer 9, electric supply installation 10, power panel 14, main circuit board 12, wireless communication module 36, human-computer interaction interface 13; Described shell 3 is that a profile is rectangular-shaped housing, is preferably the metal material housing, can shield on-the-spot the interference; Described guide rail 7 utilizes bolt 8 and support 1 to be installed in horizontal direction the side of ring rail 4; Described driving mechanism 11 mainly comprises executive component 111 and driving wheel 116, described driving wheel 116 is installed in an end of live axle 115 and is positioned at the outside of shell 3 bottom surfaces, driving wheel 116 cylindricals are meshed with guide rail 7 sides, live axle 115 passes the bearing in the bearing block 114 that is installed on shell 3 bottom surfaces, the other end of live axle 115 is positioned at shell 3 inner chambers and connects with shaft coupling 113, described executive component 111 is direct current generator or stepper motor with reductor, executive component 111 is installed in the inner chamber of shell 3 formation, and utilize executive component support 112 to be fixed on the inwall of shell 3 and main circuit board installation side opposite side, its power output shaft links vertically downward and with the shaft coupling 113 of live axle 115 axle heads, rotate thereby can drive driving wheel 116, drive the spinning end breaking checkout gear and move along guide rail 7; Described guiding mechanism 2 mainly comprises directive wheel 22, directive wheel installing plate 24 and directive wheel holddown spring 26, described directive wheel 22 is two rollers, directive wheel 22 is installed at right angle setting on the guide wheel shaft 23 of directive wheel installing plate 24, the periphery of directive wheel 22 is meshed with the side of guide rail 7, directive wheel installing plate 24 utilizes the hinge 27 parallel with guide rail 7 and shell 3 bottom surfaces to be installed in parallel in outside shell 3 bottom surfaces, and can rotate around hinge 27, described directive wheel holddown spring 26 is enclosed within on the spring guide 25, side contacts outside directive wheel holddown spring 26 1 ends and shell 3 bottom surfaces, opposite side contacts with the end face of directive wheel installing plate 24, exerts pressure to directive wheel installing plate 24 directive wheel installing plate 24 is pressed on directive wheel 22 on the guide rail 7; Described sound transducer 9 is installed on the outside that shell 3 faces mutually along ring rail 4 length directions, with ring rail 4, the position that slides past with the nearest steel traveler of sound transducer on the sound transmission aperture level on the sound transducer or the downward-sloping aligning rings; Described electric supply installation 10 comprises bus 102 and the two electrically conductive elastic compressing tablets 101 that are installed on the guide rail, just connecing dc source on the bus 102, it is negative to connect dc source on the guide rail 7, between bus 102 and the guide rail 7 insulation strip 103 is installed, one end of electrically conductive elastic compressing tablet 101 is abutted against terminal 105 and is installed in the outside, shell 3 bottom surfaces, insulation magnetic support 104 is arranged between binding post 105 and shell 3 bottom surfaces, the other end of electrically conductive elastic compressing tablet 101 contacts with bus 102 and guide rail 7 respectively and by self elastic compression, gives the power supply of spinning end breaking checkout gear by electrically conductive elastic compressing tablet 101; Described power panel 14 mainly comprises battery, charging circuit and mu balanced circuit, power panel 14 is installed in the inboard of shell 3 bottom surfaces, power supply links to each other with binding post 105 by wire to be provided, in order to prevent that electrically conductive elastic compressing tablet 101 and guide rail 7 or bus 102 loose contacts from causing power supply instability, be provided with rechargeable battery and charging circuit on the power panel, the electricity consumption of spinning end breaking checkout gear is provided by rechargeable battery, and the power supply that electrically conductive elastic compressing tablet 101 provides is used for charging circuit and charges to rechargeable battery; Described main circuit board 12 is installed on shell 3 side inner walls with sound transducer 9 homonymies, and main circuit board 12 mainly comprises audio signal processing circuit, audio signal sample circuit, microcontroller, executive component drive circuit and communication module; Described human-computer interaction interface 13 is installed in the top of shell 3, mainly comprise keyboard and display screen, button on the keyboard is used for operation, In-put design ingot speed, front roller sliver exporting speed, short cop tube, rove source that the user controls the spinning end breaking checkout gear, bring into operation and parameter or the order such as out of service, and display screen is used for showing to the spinner ingot item that breaks end and the running status of apparatus for detection of breaking of yarn occur; Described wireless communication module 36 comprises wireless communication line plate 361 and antenna 362, wireless communication line plate 361 is installed in by the main circuit board of shell 3 inboards, link to each other with main circuit board 12 and antenna 362 by wire, antenna 362 is installed in the outside of shell side, the result that spinning end breaking detects is except the display screen that adopts the spinning end breaking checkout gear shows, check for the ease of the spinner, the large display screen that can receive wireless signal is installed in the workshop, the spinning end breaking checkout gear testing result that will break end is transferred to the large display screen of placing in the workshop by wireless transmission method, avoided wiring inconvenience in the workshop, spinning end breaking checkout gear of the present invention preferably utilizes wireless communication mode spinning end breaking information to be sent to the large display screen that can receive wireless signal, wireless communication mode can adopt the technology such as bluetooth or ZigBee, does not adopt wired information transmission mode but therefore do not get rid of.
The improvement project of spinning end breaking checkout gear of the present invention is characterised in that as the spinning end breaking checkout gear adds ingot position and headstock checkout gear (referring to Fig. 5,6), is convenient to control the operation of spinning end breaking checkout gear.Be specially, add two inductive switches 51, inductive switch 51 and ring rail are vertically mounted on the bottom of sound transducer, shell 3 is near on the outer walls of ring rail one side and utilize wire to link to each other with two DI mouths of main circuit board, an ingot position steel plate 52 is installed as the detection target of inductance switch in the position corresponding with each spindle on ring rail, when the spinning end breaking checkout gear when guide rail moves, whether microcontroller has moved to steel plate 52 positions, ingot position by the ingot position inductive switch 51 that detects top, thereby whether the sound transducer 9 of indirect detection spinning end breaking checkout gear has moved to the rings present position, if moved to the rings position, then begin sound detection and the analysis of an ingot position; Mounting end ingot position steel plate 53 on the ring rail of spindle position, the every side of fine spining machine both ends, ingot position, end steel plate 53 is longer than ingot position steel plate 52, can allow two inductive switches 51 detect simultaneously, if the microcontroller of spinning end breaking checkout gear detects two inductive switches 51 simultaneously over against ingot position, end steel plate 53, make executive component 111 change after then carrying out sound detection and analyzing and turn to, thereby make the spinning end breaking checkout gear change moving direction at guide rail.Spinning end breaking checkout gear of the present invention utilizes ingot position and headstock checkout gear can also judge ingot position residing particular location on fine spining machine that spinning end breaking occurs, the spinner utilizes man-machine interface to input the residing spun yarn machine number of this spinning end breaking checkout gear and is positioned at which side information of fine spining machine, the spinning end breaking checkout gear begins the moving process from headstock, every through an ingot position steel plate 52, do counting and add 1, like this when detecting the broken end generation, just can determine the fine spining machine board that breaks end, which side and position, ingot position, when the spinning end breaking checkout gear moves to ingot position, end steel plate 53, counter O reset after the order spinning end breaking checkout gear commutation operation.Inductive switch 51 adopts proximity switch inductive in the present embodiment, but do not get rid of the contact-making switch or the non-contact switch that adopt other form, such as inductance type switch, Hall switch, travel switch etc., need corresponding alteration switch to detect the mode of target when using the switch of other form, during such as the application Hall switch, need to increase magnet steel at ingot position steel plate 52 and ingot position, end steel plate 53, this is the ABC of the sector, repeats no more.
The further improvement project of spinning end breaking checkout gear of the present invention is characterised in that and is spinning end breaking checkout gear adding temperature, humidity sensor 15, temperature, humidity sensor 15 is installed in the outside of outer casing top surface, and link to each other with AD passage on the main circuit board with wire, the microcontroller of spinning end breaking checkout gear utilizes temperature, humidity sensor 6 detects the temperature at each place, ingot position, humidity, and with temperature, humidity data sends to host computer together with the broken end data, can be beneficial to like this reason that host computer analysis broken end produces, for example, overwhelming majority's son broken end not in doffs that splits, only duplicate broken end at indivedual spindles, this causes the spinning tension sudden change to cause often owing to machine performance is bad, if broken end occurs on a large scale, then may be because temperature, humidity is improper to be caused.In order to reduce accessory, the convenient operation personnel operation utilizes touch-screen to substitute button and display screen man-machine interface, makes the interface more succinct in the present embodiment, and has increased the flexibility of configuration.
The further improvement project of spinning end breaking checkout gear of the present invention is characterised in that as the spinning end breaking checkout gear adds imageing sensor to detect on the ingot position whether be inserted with spool, a kind of embodiment of this improvement project is for adding the USB interface camera as imageing sensor, camera be installed in sound transducer directly over, camera lens is over against spindle, microcontroller is by USB interface acquisition camera view data, and the image that collects is carried out image process, judge whether current detection ingot position has spool, if there is not spool to exist, then both made according to voice signal and be judged as broken end, and also do not thought broken end has occured.Present embodiment adopts USB mouth camera, but do not get rid of adopt other interface (such as 1394 or Camera Link interface etc.) linear array or array image sensor.Whether spool is arranged on the image processing method identification spindle is that a fairly simple image is processed problem about utilizing, and belongs to the technical problem that this subject is known.
Spinning end breaking checkout gear among the spinning end breaking checkout gear embodiment of the present invention is installed in the outside of spun yarn locomotive, is convenient for installation and adjustment, but therefore do not get rid of it is not installed in the position that is positioned at the fine spining machine inboard on the ring rail.
The invention is not restricted to embodiment discussed above, those skilled in the art can infer according to the present invention other variant form, and these variant forms also belong to theme of the present invention.
Claims (10)
1. spinning end breaking detection method that is used for ring throstle, the voice signal in the rings outside when it is characterized in that utilizing microcontroller to spin by the sound transducer collection, the voice signal that collects is carried out LPF, and the feature of the sound that produces according to steel traveler in the filtered voice signal and rings fricting movement judges whether to have occured spinning end breaking.
2. spinning end breaking detection method according to claim 1, the feature that it is characterized in that the described sound that produces according to steel traveler in the filtered voice signal and rings fricting movement has judged whether to occur that spinning end breaking refers to if filtered voice signal all has with respect to steel traveler apart from sound transducer constantly higher crest far away corresponding to the moment of steel traveler near sound transducer at each, and the frequency of the frequency ratio spindle rotation that this crest occurs is lower slightly, then this ingot position spun yarn does not break end, otherwise broken end has occured in this ingot position spun yarn.
3. the feature of the sound that produces according to steel traveler in the voice signal and rings fricting movement according to claim 2 is carried out the method that spinning end breaking is judged, it is characterized in that described spinning end breaking is judged by microcontroller operation DSP program automatically to finish.
4. spinning end breaking detection method according to claim 1 is characterized in that described microcontroller is preferably single-chip microcomputer or embedded controller.
5. spinning end breaking detection method according to claim 1, it is characterized in that described sound transducer is preferably placed at and rings level or the position slightly higher than rings in the plumb height direction, be preferably placed in the horizontal direction the perpendicular rectilinear direction of rings axle center and ring rail length direction, sound transducer is apart from the minimum range in the rings vertical axle center maximum outside diameter greater than steel traveler and ballooning of yarn movement locus in the horizontal direction, be as the criterion not affect normal spinning, be preferably greater than 5-50mm.
6. spinning end breaking detection method according to claim 1 is characterized in that described sound transducer is preferably condenser type orthotype sound transducer.
7. spinning end breaking checkout gear, it is characterized in that the according to claim 1 described spinning end breaking detection method design of this spinning end breaking checkout gear, mainly comprise guide rail, driving mechanism, guiding mechanism, shell, sound transducer, electric supply installation, power panel, main circuit board, wireless communication module, human-computer interaction interface; Described shell is that a profile is rectangular-shaped housing, is preferably the metal material housing; Described guide rail utilizes bolt and support to be installed in horizontal direction the side of ring rail; Described driving mechanism mainly comprises executive component and driving wheel, described driving wheel is installed in an end of live axle and is positioned at the outside of shell bottom surface, the driving wheel cylindrical is meshed with the guide rail side, live axle passes the brearing bore in the bearing block that is installed on the shell bottom surface, the other end of live axle is positioned at shell inner cavity and connects with shaft coupling, described executive component is with the direct current generator of reductor or stepper motor, executive component is installed in the inner chamber of shell formation, and utilizing the executive component support to be fixed on the inwall of shell, its power output shaft links vertically downward and with the shaft coupling of live axle axle head; Described guiding mechanism mainly comprises directive wheel, directive wheel installing plate and directive wheel holddown spring, described directive wheel is two rollers, directive wheel is installed at right angle setting on the guide wheel shaft of directive wheel installing plate, the outer circumference surface of directive wheel is meshed with the side of guide rail, the utilization of directive wheel installing plate is installed in the outside, shell bottom surface and parallel with the shell bottom surface with the hinge of guide rail parallel, and can be around hinge through, described directive wheel holddown spring is enclosed within on the spring guide, side contacts outside directive wheel holddown spring one end and the shell bottom surface, opposite side contacts with the end face of directive wheel installing plate, exerts pressure to the directive wheel installing plate directive wheel installing plate is pressed on directive wheel on the guide rail; Described sound transducer is installed on the shell outside relative with ring rail, and the sound transmission aperture of sound transducer is level or downward-sloping direction is aimed at the rings outside; Described electric supply installation comprises bus and the two electrically conductive elastic compressing tablets that are installed on the guide rail, just connect dc source on the bus, it is negative to connect dc source on the guide rail, between bus and the guide rail insulation strip is installed, one end of electrically conductive elastic compressing tablet is abutted against terminal and is installed in the outside, shell bottom surface, between binding post and the shell bottom surface insulation magnetic support is arranged, the other end of electrically conductive elastic compressing tablet contacts respectively and leans on self elastic compression with bus and guide rail; Described power panel mainly comprises battery, charging circuit and mu balanced circuit, and power panel is installed in the inboard of shell bottom surface, and power supply links to each other with binding post by wire to be provided; Described main circuit board is installed on the shell side inner walls with the sound transducer homonymy, and main circuit board mainly comprises audio signal processing circuit, audio signal sample circuit, microcontroller and interface circuit thereof, executive component drive circuit and communication module; Described human-computer interaction interface is installed in the top of shell, mainly comprises keyboard and display screen; Described wireless communication module comprises wireless communication line plate and antenna, by the wireless communication line plate installation main circuit board inside the shell, links to each other with communication module and the antenna of main circuit board by wire, and antenna is installed in the outside of shell side.
8. spinning end breaking checkout gear according to claim 7 is characterized in that described spinning end breaking checkout gear contains ingot position and headstock checkout gear.
9. spinning end breaking checkout gear according to claim 7 is characterized in that described spinning end breaking checkout gear contains temperature, humidity sensor that microcontroller can be used for detected temperatures and humidity.
10. spinning end breaking checkout gear according to claim 7 is characterized in that described spinning end breaking checkout gear contains microcontroller for detection of the imageing sensor that whether is inserted with spool on the ingot position.
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| CN201210451800.6A CN102995193B (en) | 2012-11-13 | 2012-11-13 | The spinning end breaking checkout gear of a kind of spinning end breaking detection method and application the method |
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| CN102995193B CN102995193B (en) | 2016-01-13 |
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| CN103572441A (en) * | 2013-10-24 | 2014-02-12 | 西安工程大学 | Sensor, wireless sensing node and method for spinning running state monitoring |
| CN104294427A (en) * | 2013-07-17 | 2015-01-21 | 索若德国两合股份有限公司 | Ring spinning machine with sensor for detecting movement of traveller |
| CN105369412A (en) * | 2015-11-12 | 2016-03-02 | 山东大学（威海） | Measuring-distance self-adaptive detecting sensor for line breaking of spinning machine |
| CN106048794A (en) * | 2016-08-18 | 2016-10-26 | 刘慧� | Yarn break protecting method for spinning frame |
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| CN104294427B (en) * | 2013-07-17 | 2017-09-01 | 索若德国两合股份有限公司 | The ring spinner of sensor with detection wire loop motion |
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| CN109402806A (en) * | 2018-11-06 | 2019-03-01 | 董旺建 | Full automatic fine yarn based on the embedded Mecanum wheel of integral hermetic changes pipe machine |
| CN109444266A (en) * | 2018-12-19 | 2019-03-08 | 杭州戬威机电科技有限公司 | A kind of fan blade of wind driven generator detection device |
| CN109444266B (en) * | 2018-12-19 | 2024-05-10 | 杭州戬威机电科技有限公司 | Wind driven generator fan blade detection equipment |
| CN110565220A (en) * | 2019-09-25 | 2019-12-13 | 郑州轻工业学院 | Real-time correlation positioning method for yarn breakage factor based on online monitoring |
| CN110670191A (en) * | 2019-09-30 | 2020-01-10 | 三峡大学 | Device and method for judging diameter of rotary circumscribed circle of wire rod |
| CN110670191B (en) * | 2019-09-30 | 2021-09-21 | 三峡大学 | Device and method for judging diameter of rotary circumscribed circle of wire rod |
| CN115233345A (en) * | 2022-07-06 | 2022-10-25 | 杭州临港化纤有限公司 | Elasticizer broken line detection method and system, storage medium and intelligent terminal |
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