EP2216434A1 - Dispositif de mesure destiné pour la détection introduction de fil de trame - Google Patents

Dispositif de mesure destiné pour la détection introduction de fil de trame Download PDF

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Publication number
EP2216434A1
EP2216434A1 EP09001879A EP09001879A EP2216434A1 EP 2216434 A1 EP2216434 A1 EP 2216434A1 EP 09001879 A EP09001879 A EP 09001879A EP 09001879 A EP09001879 A EP 09001879A EP 2216434 A1 EP2216434 A1 EP 2216434A1
Authority
EP
European Patent Office
Prior art keywords
reed
weft
electrodes
sensor
riet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP09001879A
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German (de)
English (en)
Inventor
Hans-Dieter Scorl
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Itema Switzerland Ltd
Original Assignee
Itema Switzerland Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Itema Switzerland Ltd filed Critical Itema Switzerland Ltd
Priority to EP09001879A priority Critical patent/EP2216434A1/fr
Publication of EP2216434A1 publication Critical patent/EP2216434A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D51/00—Driving, starting, or stopping arrangements; Automatic stop motions
    • D03D51/18—Automatic stop motions
    • D03D51/34—Weft stop motions
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/27—Drive or guide mechanisms for weft inserting
    • D03D47/277—Guide mechanisms
    • D03D47/278—Guide mechanisms for pneumatic looms
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/28—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed
    • D03D47/30—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed by gas jet
    • D03D47/3066—Control or handling of the weft at or after arrival
    • D03D47/3073—Detection means therefor
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D49/00—Details or constructional features not specially adapted for looms of a particular type
    • D03D49/60—Construction or operation of slay
    • D03D49/62—Reeds mounted on slay

Definitions

  • the invention relates to a sensor for controlling a weaving machine according to the preamble of claim 1, a reed with one or more such sensors and a loom equipped with one or more such sensors or with such Riet.
  • Conventional weaving machines usually include a yarn store to provide a weft, a shed forming device to form a shed, a weft insertion device to insert the weft into the shed, and a reed to abut the inserted weft to a fabric edge.
  • the entry of the weft thread is either non-positively, for example by means of compressed air or positively, for example by means of grippers or projectiles.
  • the weft insertion device may include nozzles to accelerate the weft yarn by means of compressed air or other fluid, or grippers of guided or unguided design into which the weft thread can be clamped or projectiles to which the weft yarn can be attached to the same Enter shed.
  • a further increase in the weft insertion speed or weft insertion frequency is only possible to a very limited extent by loading the weft yarns on entry due to the higher weft insertion speed up to the yield strength or limit of their tensile strength, so that a further increase in the entry speed inevitably leads to increased weft breakages.
  • a weft break normally means a break in the weaving process and is often associated with a reduction in fabric quality.
  • operator intervention is usually required to correct the weft breakage and restart the weaving operation. This means that increasing the weft insertion speed beyond an optimal value will ultimately result in a reduction in productivity.
  • yarn tension peaks that exceed 50% of thread tearing force in practice lead to processing problems that can negatively affect fabric quality and / or productivity.
  • the detection of the thread flight and in particular the thread tip plays an important role, since thus the speed profile during the weft insertion can be controlled or regulated so that the fluctuations of the weft insertion parameters are reduced and dangerous loads on the weft are avoided if possible.
  • An electrostatic weft detector is known, by means of which the passage of a weft thread can be detected without contact.
  • the described weft detector contains a plate-like sensor element, which contains a passage for a weft channel, and on which a sensor electrode is formed, which at least partially surrounds the weft thread or the weft channel.
  • potential shifts which can be detected by means of a charge amplifier and subsequently evaluated, are produced by the charges present on the weft thread.
  • the in EP 0 514 320 A1 described weft guards are used to detect the arrival of the weft thread following the catch end of the reed.
  • the weft detector described has the disadvantage that it can not normally be used within the fabric width, since the plate-like sensor element of the weft detector is formed as a printed circuit and is too thick to replace a normal Rietstab.
  • the material used for printed circuits is not suitable for making reindeer bars. If, for example, a printed circuit board made of epoxy resin is used for the printed circuit, the board without reinforcement is not dimensionally stable at thicknesses of less than 1 mm and quickly wears out. On the other hand, if a board with glass fiber reinforcement is used, in particular the edges are abrasive, which would lead to damage of the warp threads during the stop movement within the fabric width.
  • the transducer described here is based on the principle of the so-called spatial filter method.
  • the transducer contains a grid with periodically arranged in the thread running direction bars, which are effective as electrodes.
  • the charges present in the grid bars on the weft thread produce a periodic signal component which can be amplified electronically and whose frequency can be detected.
  • the detected frequency is proportional to the speed of the weft.
  • the transducer is thus able to detect not only the presence but also the current speed of a weft.
  • the disadvantage is that the in EP 1 033 579 A2 described pickup due to its design and size can not be arranged in a shed.
  • the object of the invention is to provide a sensor for controlling a loom, a Riet with one or more such sensors and a loom equipped with one or more such sensors or with such Riet available, which are suitable, the weft insertion in the shed contact to record and provide location and / or speed-dependent data concerning the flight of the weft thread in the shed for controlling the weft insertion available.
  • the inventive sensor for weft insertion control in a weaving machine which contains a reed with Rietstäben for striking registered weft threads, is designed as an electrostatic sensor to detect one or more motion variables of a weft during weft insertion.
  • the sensor comprises at least a section of a reed having at least two reed rods, which are formed as electrodes and / or on which electrodes are formed, wherein the cutout can be used in a reed within the width of a tissue to be generated.
  • the reed sticks within the cutout have a pitch which, regardless of the number of reed sticks present, corresponds to a pitch of more than 100 reed bars / 10 cm, in particular more than 150 reed bars / 10 cm.
  • the cutout can be used in a reed within the width of the tissue to be produced, without causing any irregularities in the tissue produced.
  • an electrical connection is provided mutually in an end region on consecutive reed rods which form the electrodes or on which the electrodes are formed.
  • an electrical connection is provided on each of the reed rods which form the electrodes or on which the electrodes are formed, in each case in one end region, all connections being arranged on the same side.
  • the reed sticks which form the electrodes or on which the electrodes are formed form two groups within a cutout, the electrodes of one group being insulated from the electrodes of the other group, and the terminals of the electrodes or reed sticks a group are each interconnected.
  • a reed stick of the first group alternately follows a reed stick of the second group.
  • the invention comprises a reed with one or more sensors according to one or more of the embodiments and variants described above, wherein the sensor (s) can be arranged within the width of the tissue to be produced.
  • the reed can have a pitch of more than 100 reed bars / 10 cm, in particular more than 150 reed bars / 10 cm.
  • the reed has a constant rod thickness of the reed rods and / or a constant pitch in which the reed rods are arranged, in particular a bar thickness which is constant over the width of the fabric and / or a pitch which is constant over the width of the fabric.
  • the reed has a start and a catch-side end with respect to the weft direction, and in each case comprises an additional sensor at the beginning and / or catch end for monitoring the weft thread at the beginning and / or end.
  • the reed comprises an additional sensor at the catch end of the reed, which is arranged outside the width of the fabric to be produced in order to detect weft defects and in particular long shots.
  • the reed rods are designed as profile rods, in particular as profile rods, in which a continuous firing channel is formed in order to register weft threads on a jet loom.
  • the reed comprises smooth reed rods for use on rapier or projectile weaving machines.
  • the invention comprises a loom with one or more sensors according to one or more of the embodiments and variants described above and / or with a reed according to one or more of the embodiments and variants described above.
  • the weaving machine can be designed, for example, as a jet loom, for example as an air jet loom, and / or as a rapier weaving machine and / or as a projectile weaving machine.
  • the measurement of the speed and position of the weft tip in the shed allows to reduce the weft load during the weft insertion and thus reduce yarn breaks and downtime.
  • Another advantage is that in addition the compressed air and thus energy consumption of air jet machines can be lowered thanks to the measurement of weft movement sizes in the shed.
  • Fig. 1 shows an embodiment of a jet loom 1 with one or more sensors 11.1 - 11.n and a reed 8 according to the present invention.
  • the Riet 8 is provided with Rietstäben and serves to hit registered weft threads.
  • the jet loom for example, be designed as an air jet loom.
  • the application of the invention is not limited to jet looms, but can be used in an advantageous manner on other types of weaving machines such as series sheds, rapier or projectile looms.
  • the sensor (s) 11.1-11.n according to the present invention are designed as electrostatic sensors to detect one or more movement quantities of a weft thread 2 during weft insertion.
  • the sensor (s) 11.1-11.1n according to the invention comprise at least one section of a reed having at least two reed rods which are designed as electrodes and / or on which electrodes are formed, the cutout being in a reed within the width of a tissue to be generated can be used.
  • the jet loom 1 of the embodiment may be provided with one or more of the following components, for example, a yarn store 2a which may include, for example, a storage drum 2b to provide a weft yarn 2; one or more Windungsbeatener 7.1, 7.2, to determine the length of the withdrawn from the yarn store weft yarn; one or more accelerating nozzles 3, 4 for accelerating the weft and control valves 13, 14 for supplying fluid to the accelerating nozzles to control; and a plurality of relay nozzles 5.1ac, 5.ma-c for conveying the weft yarn 2 during the weft insertion and control valves 15.1, 15.m for controlling the supply of fluid to the relay nozzles, wherein the same as in FIG Fig.
  • a yarn brake 9 may be provided to decelerate the weft yarn, for example towards the end of the weft insertion, and / or a catching or stretching nozzle 6 to receive the weft yarn after the weft insertion.
  • the reed 8 and, if necessary, at least one of the accelerating nozzles is arranged on a sley 19.
  • the sensors 11.1 -11.n, the thread counters 7.1, 7.2 and the control valves 13, 14, 15.1, 15.n may be connected to a controller 10 on a case by case basis.
  • Fig. 2 shows a side view of a sley 19, on which a reed 8 is arranged and / or fixed according to the present invention.
  • the sley is designed to be pivotable, so that by means of the same a stop movement can be performed.
  • the loom is usually equipped with warp threads and a shedding device to form by deflection of the warp threads a shed 25 into which the weft can be entered.
  • the reed is usually provided with a firing channel 16 and with one or more relay nozzles 15 in order to insert the weft thread into the shed 25.
  • Fig. 1 shows a side view of a sley 19, on which a reed 8 is arranged and / or fixed according to the present invention.
  • the sley is designed to be pivotable, so that by means of the same a stop movement can be performed.
  • the loom is usually equipped with warp threads and a shedding device to form by deflection of the warp threads a shed 25 into which
  • the reed 8 the relay nozzles 15 and the sley 19 are shown in two different positions, once in the position 8, 15, 19, in which the weft thread is inserted, and once in a position 8 ', 15', 19 'after the Swiveling the batten, in which the registered weft thread can be struck on a fabric edge.
  • the senor 11 as an electrostatic sensor designed to detect one or more movement variables of a weft thread during weft insertion.
  • the sensor comprises at least a section of a reed having at least two reed bars 12a 1 , 12a 2 , 12a 3 , 12b 1 , 12b 2 , 12b 3 , which are formed as electrodes and / or on which electrodes are formed, wherein the cutout in FIG a reed within the width of a tissue to be generated can be used.
  • the reed bars 12a 1 , 12a 2 , 12a 3 , 12b 1 , 12b 2 , 12b 3 within the cutout can be arranged, for example, in a pitch which, regardless of the number of reed bars present, has a pitch of more than 100 reed bars / 10 cm, especially more as 150 Rietstäben / 10 cm corresponds.
  • the cutout can be used in a reed within the width of the tissue to be produced, without causing any irregularities in the tissue produced.
  • successive reed rods which form the electrodes or on which the electrodes are formed in each case mutually provided in an end region, an electrical connection.
  • the connections can be arranged alternately at the top and bottom of the reed.
  • an electrical connection is provided on each of the reed rods which form the electrodes or on which the electrodes are formed, in each case in one end region, all connections being arranged on the same side.
  • the reed rods 12a 1 , 12a 2 , 12a 3 , 12b 1 , 12b 2 , 12b 3 which form the electrodes or on which the electrodes are formed, form two groups, the electrodes of the one group being separated from the electrodes other group are arranged in isolation, and where, as in Fig. 3 shown, the terminals of the electrodes or Rietstäbe a group are each interconnected.
  • a reed stick of the first group alternately follows a reed stick of the second group.
  • the reed rods or the electrodes formed thereon are connected in the exemplary embodiment to an evaluation unit, which is provided with an in Fig. 3 not shown control of the loom can be connected.
  • the evaluation unit can contain, for example, a charge amplifier and further electronic circuits for evaluating the signal detected by the electrodes, for example a discriminator circuit and / or a circuit for determining the frequency of the detected signals or individual signal components. If the reed rods or electrodes, as mentioned in the embodiment variant described above, form two groups, these are expediently connected in isolation with the evaluation unit.
  • the in the FIGS. 4A-D shown embodiment of the sensor according to Fig. 3 includes a first group 12a of Rietstäben, which are designated by the reference numerals 12a 1 , 12a n .
  • the reed rods are formed in the embodiment shown as profile bars, in which a firing channel 16 is provided.
  • a firing channel 16 is provided at one end of the reed rods 12a 1 , 12a n ports are provided, which are designed to taper with advantage.
  • the measuring sensor comprises a connecting part 17, which connects the reed rods of the group 12a to one another.
  • the connecting part can be provided, for example, with openings into which the connections of the reed rods are inserted.
  • a crimping, crimping, welding or soldering connection may be provided to ensure electrical contact between the reed bars 12a 1 , 12a n and the connecting member 17.
  • a crimping, crimping, welding or soldering connection may be provided to ensure electrical contact between the reed bars 12a 1 , 12a n and the connecting member 17.
  • a crimping, crimping, welding or soldering connection may be provided to ensure electrical contact between the reed bars 12a 1 , 12a n and the connecting member 17.
  • a crimping, crimping, welding or soldering connection may be provided to ensure electrical contact between the reed bars 12a 1 , 12a n and the connecting member 17.
  • a second set of reed rods is needed with a connector located at the opposite end of the reed rods.
  • the reed rods of one group are each arranged between the reed rods of the other group to form
  • FIGS. 5, 5A, B show an embodiment of a reed according to the present invention. Show Fig. 5 a supervision, Fig. 5A a cut through the reed and Fig. 5B a detailed view from the section of Fig. 5A ,
  • the reed 8 contains one or more Sensor 11.1 - 11.n, which, as in Fig. 5 shown as Rietab baine can be executed.
  • the Riet contains sections 8.1 - 8.n-1 of conventional design, which are inserted between the sensors and which together with the sensors form the reed.
  • the sensors and the conventional Rietabitese can for example be held at the lower end in the groove of a sley 19 and at the upper end by means of one or more mechanical connecting parts 8a 1 - 8a n be connected to each other.
  • the sensors can also be inserted into the reed 8 in other ways, as long as this does not cause any irregularities in the tissue produced.
  • the sensors 11.1-11.n shown in this embodiment are designed as electrostatic sensors to detect one or more motion variables of a weft during weft insertion.
  • the sensors include a section of a reed that, as in Fig. 5 shown, as Rietabimposing can be formed, and at least two Rietstäbe 12a 1 , 12a 2, 12b 1 , 12b 2 , which are formed as electrodes and / or are formed on which electrodes.
  • the transducers can be used within the width of the tissue to be produced, without causing irregularities in the tissue produced.
  • an electrical connection is provided mutually in an end region on consecutive reed rods which form the electrodes or on which the electrodes are formed.
  • an electrical connection 17a or 17b is provided on the reed rods which form the electrodes or on which the electrodes are formed, in each case in one end region, all the connections 17a, 17b, as in FIGS FIGS. 5, 5A, B shown are arranged on the same side.
  • the reed rods 12a 1 , 12a 2 , 12b 1 , 12b 2 which form the electrodes or on which the electrodes are formed, form two groups within a sensor, wherein the electrodes of the one group are arranged isolated from the electrodes of the other group, and wherein the terminals of the electrodes or Rietstäbe a group are each interconnected.
  • a reed stick of the first group alternately follows a reed stick of the second group.
  • the connections of the two groups of the sensor are with advantage in the FIGS. 5, 5A, B not shown evaluation unit connected.
  • the reed 8 can, for example, have a pitch of more than 100 reed rods / 10 cm, in particular more than 150 reed rods / 10 cm.
  • the reed has a constant rod thickness of the reed rods and / or a constant pitch in which the reed rods are arranged, for example a rod thickness that is constant over the tissue width and / or a pitch that is constant over the tissue width.
  • the rod thickness of the reed rods and / or the pitch may vary over the fabric width.
  • the reed 8 has a start and a catching end with respect to the weft direction, and in each case comprises a sensor 11.1 at the beginning and / or a sensor 11n at the catching end to feed the weft at the beginning and / or end monitor.
  • the reed comprises an additional, in Fig. 5 not shown measuring sensor at the catch end of the reed, which is arranged outside the width of the fabric to be produced in order to detect weft defects and in particular long shots.
  • the reed sticks are as in FIGS FIGS. 5 and 5A shown formed as profile bars, in particular as profile bars in which a continuous firing channel 16 is formed to enter weft threads on a jet loom.
  • the reed comprises smooth reed rods for use on rapier or projectile weaving machines.
  • Fig. 6 shows a block diagram of an embodiment of a controller for a loom according to the present invention.
  • Under the Reference numerals 20 are those in FIG Fig. 1 shown mechanical and pneumatic components 2a, 3, 4, 5.1ac, 5.na-c, 6, 9 summarized for the weft insertion.
  • sensor 11.1 - 11.n the position of the weft thread is detected in the shed and the output signal generated by an evaluation unit of the sensor is fed to a control device 10.1.
  • the control device 10.1 controls the switching on and off of the relay nozzles.
  • the signal path 21 forwards the switch-on signals for the relay nozzles to the corresponding control valves 15.1 to 15.m.
  • Another signal path 22 directs shutdown signals for the relay nozzles to the corresponding control valves.
  • the control device can also generate switch-off signals for the acceleration nozzles in order to control the switch-off of the corresponding compressed-air supply 13, 14.
  • a sensor arranged on the catching side 11.n detects the arrival of the weft tip on the catching side of the shed.
  • the signal of the sensor arranged on the receiving side 11.n is fed to a control device 10.2, which determines from the supplied signal the time required for the entry of the weft thread and compared with a predetermined target entry time, and which with the difference between that for the entry of the weft required time and the desired entry time the pressure and / or the blowing time, or switching off, the acceleration nozzles controls.
  • the signal path 24 passes the control signal for the pressure to the compressed air supply 13, 14 of the Bescheun Trentsdüsen.
  • the compressed air supply 13, 14 includes occasionally adjustable and / or controllable pressure regulator, mass flow controller and / or control valves.
  • a further signal path 23 can be provided, via which the switching off of the acceleration nozzles can be controlled.
  • the pressure of the acceleration nozzles is set manually and the switching off of the acceleration nozzles is regulated by means of the regulating device 10.2 as a function of the time required for the entry of the weft thread.
  • the acceleration nozzles are switched on at a predetermined point in time, which may be coupled to the main machine shaft, for example.
  • the pressure of the acceleration nozzles is regulated by means of the control device 10.2 as a function of the time required for the entry of the weft thread.
  • the acceleration nozzles are switched on at a predetermined time, which can be coupled, for example, with the main machine shaft, and switched off by means of the control device 10.1 as a function of the position of the weft tip.
  • the sensor and the reed according to the present invention as well as the weaving machine according to the invention enable trouble-free and thus economical operation, in that the load on the weft thread can be better controlled thanks to the detection of weft insertion in the shed. This makes it possible to either reduce the number of machine stops as well as to increase the entry frequency. Another advantage is that the compressed air consumption of airjet looms over older machines can be significantly reduced.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
EP09001879A 2009-02-10 2009-02-10 Dispositif de mesure destiné pour la détection introduction de fil de trame Withdrawn EP2216434A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP09001879A EP2216434A1 (fr) 2009-02-10 2009-02-10 Dispositif de mesure destiné pour la détection introduction de fil de trame

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09001879A EP2216434A1 (fr) 2009-02-10 2009-02-10 Dispositif de mesure destiné pour la détection introduction de fil de trame

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EP2216434A1 true EP2216434A1 (fr) 2010-08-11

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102330237A (zh) * 2011-07-18 2012-01-25 吴江市锦邦纺织品有限公司 一种可更换筘片的钢筘
WO2014064455A1 (fr) * 2012-10-26 2014-05-01 Engineered Capabilities Ltd Transducteurs thermoélectriques
CN107034577A (zh) * 2015-11-03 2017-08-11 株式会社丰田自动织机 喷气织机中的纬纱检测方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2376058A1 (fr) * 1976-12-30 1978-07-28 Vyzk Vyvojovy Ustav Zavodu Dispositif pour la detection de fibres textiles
JPS62206063A (ja) * 1986-03-04 1987-09-10 酒清織物株式会社 織機の緯糸検知装置
EP0514320A1 (fr) 1991-05-15 1992-11-19 Sulzer RàœTi Ag Détecteur de trame électrostatique et métier à tisser pourvu d'un tel détecteur de trame
JPH0711545A (ja) * 1993-06-23 1995-01-13 Nippon Seren Kk シャトルレス織機におけるよこ糸飛走検出装置
EP1033579A2 (fr) 1999-01-09 2000-09-06 Technische Universität Dresden Procédé, capteur et circuit pour la détermination sans contact du mouvement d'un fil

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2376058A1 (fr) * 1976-12-30 1978-07-28 Vyzk Vyvojovy Ustav Zavodu Dispositif pour la detection de fibres textiles
JPS62206063A (ja) * 1986-03-04 1987-09-10 酒清織物株式会社 織機の緯糸検知装置
EP0514320A1 (fr) 1991-05-15 1992-11-19 Sulzer RàœTi Ag Détecteur de trame électrostatique et métier à tisser pourvu d'un tel détecteur de trame
JPH0711545A (ja) * 1993-06-23 1995-01-13 Nippon Seren Kk シャトルレス織機におけるよこ糸飛走検出装置
EP1033579A2 (fr) 1999-01-09 2000-09-06 Technische Universität Dresden Procédé, capteur et circuit pour la détermination sans contact du mouvement d'un fil

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102330237A (zh) * 2011-07-18 2012-01-25 吴江市锦邦纺织品有限公司 一种可更换筘片的钢筘
WO2014064455A1 (fr) * 2012-10-26 2014-05-01 Engineered Capabilities Ltd Transducteurs thermoélectriques
CN107034577A (zh) * 2015-11-03 2017-08-11 株式会社丰田自动织机 喷气织机中的纬纱检测方法

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