CN2417183Y - Arrangement for testing speed of rotating for textile - Google Patents
Arrangement for testing speed of rotating for textile Download PDFInfo
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- CN2417183Y CN2417183Y CN 99252138 CN99252138U CN2417183Y CN 2417183 Y CN2417183 Y CN 2417183Y CN 99252138 CN99252138 CN 99252138 CN 99252138 U CN99252138 U CN 99252138U CN 2417183 Y CN2417183 Y CN 2417183Y
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Abstract
The utility model relates to an arrangement for testing speed of rotating for textile, which comprises a testing circuit which is composed of a photoelectric sensor, a signal amplifier, a pulse shaping assembly, a sensitivity control element, a working condition indicator, etc., and an arithmetic circuit which is composed of a single chip computer, a keyboard, a liquid crystal display, a crystal shake generator, a drift marker, etc. The photoelectric sensor can receive the reflected signal of the infrared loading of being measured yarn which can be input to a CPU for calculation after magnified and pulse shaped. The obtain data can be displayed and output by the liquid crystal display when recorded and stored simultaneously. The utility model has the advantages of simple operation and high efficiency.
Description
The utility model relates to a kind of weaving speed detector, and more particularly, the utility model relates to a kind of speed detector of weaving and using with detecting rotational speeds such as yarn, spindle and rollers.
As well known to those skilled in the art, the twist of yarn, number and bar evenness are three big technic indexs of decision yarn qualities, and wherein correct, good twist is the necessary condition that guarantees intensity, fineness and the bar evenness of yarn.
On the other hand, whether even the rotating speed of yarn, spindle and roller etc. is suitable, is again the twist of decision yarn, the key factor of drawing-off (that is number).For controlling the good process performance of Yarn-spinning spindle fully and effectively well, up to now, by regular ingot speed generaI investigation or on each spindle, be equipped with yarn twist checkout gear, yarn rotating speed, ingot speed etc. is monitored.Then,, try to achieve the twist amount,, the rotating speed of yarn, ingot speed etc. are regulated again according to measured twist in laboratory using unwinding yarn method.
Obviously as seen, above-mentioned traditional method of testing efficient is low, test, regulates and bothers, can't be effectively, regulate in time.
Have, the ratio of the sampling of " examination twist sampling is measured " method in the past only accounts for hundreds of/one of spindle sum usually to thousands of/one again.Such method of testing leak is very big.
In recent years, the someone has invented " flash test instrument ", " infrared ray tester " reaches " yarn twist monitoring device ".Described " flash test instrument " has the practical function that various rotating objects is carried out contactless direct measurement, but because in actual use, must the manual adjustment flashing rate and judge tracking effect with sight, and it is tested effect and is subjected to artificial restriction.In addition, must survey the contrast computing between parameter and the desired value again, just can obtain correct conclusion, thus, make that also measurement effect is restricted once more.
" infrared ray tester " have automatically test the speed, energy consumption is little and the advantage of mobility strong, but the weak point that exists is: during use, must paste the infrared reflection material on testee, and like this must be when machine shuts down.For the textile industry that the many ingots of palpus turn round continuously, this almost is impossible.
" yarn twist monitoring device ".Detecting rotational speed as the rotating speeds such as yarn, spindle and roller in the spinning stages such as thick, the spun yarn of weaving in the later process, be on the yarn path of each ingot of fine spining machine, one " yarn twist monitor head " to be set, so that continuous monitoring yarn twist in process of production.When measured twist information and comparative information are inconsistent, promptly to feed back by signal, alert is handled.This device is with regard to a spindle, and it is no doubt good that it detects effect, but because every machine spindle number more (four, 500) of fine spining machine, the yarn twist monitor head number of a required outfit of fine spining machine is promptly very big.For the manufacturer that is equipped with tens of fine spining machines, it is spent very expensive, can't be suitable for.
In view of above-mentioned, the purpose of this utility model is: a kind of yarn speed detector is provided, and described speed detector is to adopt photoelectric sensor, and the yarn revolution signal that utilizes infrared ray to load with carries out detecting rotational speed, and its mensuration is easy, quick, efficient.
Another purpose of the present utility model is: provide a kind of and weave with spindle detecting rotational speed and weaving with the speed detector of component speed such as roller, the speed detector system of described spindle and roller adopts photoelectric sensor, the yarn revolution signal that utilizes infrared ray to load with carries out the mensuration of rotating speed, and its mensuration is easy, quick, efficient.
Speed detector of the present utility model is to constitute incorporate measurement mechanism by institutes such as high-precision sensor, detection line, one-chip computers, ability with rotating speed of the extremely trickle object that runs up of discriminating, directly the measures of dispersion of rotating speed is assessed in computing, and possesses the long term storage and the search function of detection information.
Because speed detector of the present utility model is to adopt photoelectric sensor, the yarn revolution signal that utilizes infrared ray to load with, rotating speed to yarn, spindle and roller is measured, so, speed detector of the present utility model can be finished the mensuration of the speed of gyration of single ingot yarn in two, three seconds, and because described speed detector possesses the demonstration of speed difference signal, so, saved the user and judged the time of surveying rotating speed and mental arithmetic speed difference percentage, detection efficiency further is provided.And be convenient to storage by information, be convenient to the testing staff and analyze immediately and handle.
Speed detector of the present utility model is made of testing circuit and computing circuit.
Described testing circuit comprises: photoelectric sensor, the signal amplifier that is connected with photoelectric sensor, the shaping pulse assembly that is connected simultaneously with described signal amplifier, CPU, working condition indicator and sensitivity regulating element, sensitivity adjustment element that is connected with above-mentioned shaping pulse assembly and the working condition pointer that is connected with shaping pulse assembly and CPU simultaneously etc.Described circuit is the analog circuit of the input of carrying out detection signal, amplification, shaping etc.
Described computing circuit comprises: as the one-chip computer (CPU) of core component, the keyboard that is connected with CPU, the LCD that is connected with CPU (LCD), the crystal oscillator generator that is connected with CPU and memory, the memory that is connected with CPU, the deviation indicator that is connected with CPU, the power-supply controller of electric that is connected simultaneously with CPU and working condition indicator.Described circuit is the digital circuit of carrying out measurement result, detection efficiency being provided and storing.
In foregoing circuit, described photoelectric sensor adopts infrared emission and receiving device, and described signal amplifier is a triode amplifier.Described shaping pulse assembly is by relatively trigger, rectifying tube and resistance constitute.The function of described sensitivity adjustment element is finished by a resistance, and described working condition indicator is a light emitting diode, can be respectively with green light, red light and extinguish and show working condition to be measured, that measure and finish measurement etc.Described deviation indicator also is a light emitting diode, can be respectively shows with green light, red light and sodium yellow to meet deviation, be higher than deviation and be lower than the state of three kinds of measurement results of deviation index.
The action principle of speed detector of the present utility model is: the infrared launcher of photoelectric sensor sends infrared light; In the rotating coverage of yarn,, accept yarn revolution signal by light-sensitive element by the reflection (or the reflection of the reflecting strips of rotating object) of the tested yarn that rotating; Described signal amplifies through amplifying circuit, passes through after the shaping pulse again, and the input one-chip computer is counted and computing; When the resulting rotary speed data of computing stores through the one-chip computer record, show output by LCD, and show the rotating speed state by working condition indicator and dual-colored LED (deviation display) display.
More specifically, with reference to accompanying drawing, the measuring circuit work of speed detector of the present utility model comprises following 4 working stages:
1. " 0 " attitude stage: press on ﹠ off switch, the prime power connection, each power supply leading-in end VDD supplies with operating current simultaneously.One-chip computer CPU is in zero state, and display lcd shows " 0 ".
2. test the speed preparation " to be measured " stage: press the key that tests the speed, the tachometer signal of single-chip microcomputer output detection circuit, the VDD power supply of tachometer circuit provides the operating current that tests the speed, at this moment, and condition indicator L ' bright green signal lamp, expression enters the preparatory stage of testing the speed.
3. test the speed the stage: after the infrared ray adopter BG2 of photoelectric sensor received tach signal, the information that tests the speed of generation and synchronization through amplifying, after shaping and the sensitivity adjustment, was exported the square pulse signal that worker's computer CPU uses;
The part of described pulse signal is supplied to the working condition indicator circuit, working condition indicator L2 shiny red signal lamp, and expression receives tachometer signal;
Another part of described pulse signal is supplied to computer CPU, and here, the crystal oscillator frequency generator of pulse signal and 4MHz compares computing, according to the calculation procedure of importing in advance, regularly provides measured data to LCD LCD.
4. the comparison of test result, output stage: computer CPU is finished the cycle (time) of testing the speed according to predefined, detection of end computing voluntarily, instruction and deviation range information that output stops to test the speed, tachometer circuit are accepted to stop surveying after the instruction, and VDD stops to provide electric current;
After deviation indicator receives the actual measurement status information, its display L4, L5 (that is, the deviation range display claims the dual-colored LED display again, is made of light emitting diode D9, D10 respectively) difference or common glittering green, red, sodium yellow.LCD keeps measurement data.
Speed detector of the present utility model also can carry out the setting (setting 1) of rotating speed achievement data and the setting (setting 2) of deviation tolerance band, and enroll operation program, the utilization that relatively waits timely when being convenient to detecting rotational speed before test the speed in advance.
Speed detector of the present utility model also can be before testing the speed, and stores a plurality of and relevant data, the data etc. of testing the speed, the utilization during for detecting rotational speed in advance.
Memory in the speed detector circuit of the present utility model can store nearly 999 information, so, can do preestablishing and storing of multi-class data easily, the efficient that tests the speed is provided more.
In the testing circuit of speed detector of the present utility model, preferably, the signal amplifier BG1 of described photoelectric sensor is 9015 type triode amplifiers; The infrared ray adopter BG2 of described photoelectric sensor, described switching tube BG3, BG4, BG7 are respectively 9012,9012 and 9013 type triodes.The comparison trigger IC:A, IC:C, the IC:D that form described shaping pulse assembly are the LM3234 type.Described rectifying tube D9, D10 are respectively 2AP9 and 4148 types.
In above-mentioned testing circuit, the resistance of R4, R19 is at 26-30K ohm, 27K ohm preferably; The resistance of R6, R7 is at 1-2K ohm, 1K ohm preferably; The resistance of R9, R11, R12 is at 14-18K ohm, preferably 15K; The resistance of R166 at 100-110K ohm, preferably, 102K ohm.
In the testing circuit of speed detector of the present utility model, the resistance that plays the resistance R 5 of sensitivity adjustment element function is 40-60K.
In the computing circuit of speed detector of the present utility model, the resistance of R1 at 180-240 ohm, preferably, 190-200 ohm; The resistance of R2 at 280-340 ohm, preferably, 290-300 ohm; The resistance of R3 is at 9-10K ohm; The resistance of 2 R6 at 6-7K ohm, preferably, 6.0-6.5K ohm; The resistance of R23 at 95-105K ohm, preferably, 100K ohm.The capacitance of C1, C2 is 20-22PF.
In the computing circuit of speed detector of the present utility model, switching tube BG5, BG6 are 9012 types.Described memory IC 1 is the CIP6 type.D1-D8 is an employed diode in the keyboard circuit.
Figure 1 shows that the circuit structure schematic diagram of speed detector of the present utility model.
Figure 2 shows that the physical circuit figure of speed detector of the present utility model.
Figure 3 shows that the profile front elevation of speed detector of the present utility model.
Figure 4 shows that speed detector of the present utility model and in the past " flash test instrument ", " infrared ray tester " reach the testing efficiency comparison diagram of testers such as " yarn twist monitoring devices " etc.
Among the figure, 1 is the testing circuit part, and 2 is the computing circuit part, and 3 is keyboard portion, and 4 is the crystal oscillator generator.5 is CPU, and 6 is memory.7 is the working condition indicator, and 8 is the deviation range display, and 9 are the key that tests the speed, and 10 is on ﹠ off switch.VDD is each power supply leading-in end.LCD is the LCD of speed detector, and CPU is single-chip microcomputer (central processing unit).IC1 is a memory, and BG1-BG6 is a triode, and R1, R2, R7, R10, R13, R14, R20 and R23 etc. are respectively resistance, and L1, L2, L3, L4, L5 etc. are respectively light emitting diode, and D9, D10 are respectively rectifying tube.IC:A, IC:D are trigger comparator.
The operating voltage of speed detector of the present utility model adopts dc source 4.5V.
Below, with reference to accompanying drawing, in conjunction with the embodiments and test case, illustrate in greater detail the utility model.
Embodiment 1
The preparation of speed detector of the present utility model
Press circuit shown in the accompanying drawing 2, the preparation speed detector.In described testing circuit, the signal amplifier BG1 of described photoelectric sensor is 9015 type triode amplifiers; The infrared ray adopter BG2 of described photoelectric sensor, described switching tube BG3, BG4, BG7 are respectively 9012,9012 and 9013 type triodes.The comparison trigger IC:A, IC:C, the IC:D that form described shaping pulse assembly are the LM3234 type.Described rectifying tube D9, D10 are respectively 2AP9 and 4148 types.
In above-mentioned testing circuit, the resistance of R4, R19 is 27K ohm; The resistance of R6, R7 is being 1K ohm; The resistance of R9, R11, R12 is got 15K; The resistance of R14 is 8.2K.The resistance of R16 is got 100K ohm.
The resistance of the resistance R 5 of described sensitivity adjustment element function is 47K.
In the computing circuit of speed detector of the present utility model, the resistance of R1 is got 200 ohm; The resistance of R2 is got 300 ohm; The resistance of R3 is 10K ohm; The resistance of 2 R6 is at 6.1K ohm; The resistance of R23 is got 100K ohm.The capacitance of C1, C2 is 20PF, and the capacitance of C3 is numbered 104.
In above-mentioned computing circuit of the present utility model, described CPU is the DIP18 type, and described memory is the CIP6 model.
Test case 1
The test of yarn rotating speed
The circuit working principle of this test case is as follows:
With the measuring head of speed detector of the present utility model aim in service, at the high speed rotary yarn of leading between hook and the spindle upper end, distance is less than 1 centimetre.
The circuit operation of this test case is as follows:
Press on ﹠ off switch, the prime power connection: the power supply leading-in end VDD of the power supply leading-in end VDD of singlechip CPU, the power supply leading-in end VDD of memory IC 1 and measuring circuit supplies with operating current simultaneously.
1. the single-chip microcomputer energising enters working stage: the signal circuit to display lcd provides " 0 " signal, and then LCD shows " 0 ".Operating circuit to the crystal oscillator generator provides operating current, produces and accept 4MHZ crystal oscillator signal; By information circuit, finish the preparation of survey data access at any time to memory IC I; Prepare by finishing to carry out with the instruction circuit of keyboard.
In addition, by resistance R 23 make switching tube BG6 by.Cause switching tube BG5 not work, the measuring circuit no current provides, and does not work.
In the above-mentioned stage, can finish following work: according to desired indicator established standards rotating speed; Require to set the deviation range that allows according to counting; Also can carry out the retrieval of former data etc.
2. test the speed preparation (to be measured) stage: press the key that tests the speed, enter test preparation program.Single-chip microcomputer output tachometer signal, through R23, actuating switch pipe BG6.The control utmost point of switching tube BG5 is passed through by electric current because of switching tube BG6 conducting, the BG5 conducting.Operating current in the measuring circuit returns negative pole by UDD through BG5, R20, L3.Infrared light-emitting diode L3 energising back work produces infrared light sources and uses for measuring.
When photoelectric sensor did not enter effective measurement zone, infrared ray adopter BG2 was in by state because of can't accept the infrared light that is reflected by yarn.The amplifier BG1 control utmost point because of BG2 by, no current passes through, and constitutes by condition.No signal output.
Since the prime no signal, the same no signal output of IC:A output.Switching tube BG7 because of control utmost point no signal by.Rectifying tube D10 because of BG7 by forming reverse potential, switching tube BG4 since the control utmost point be subjected to D10 reverse potential influence and by.Thus, make BG3 control electrode potential reduce, satisfy this pipe turn-on condition, the BG13 conducting.In the measuring circuit, operating current is back to negative pole by UDD through BG5, BG3, R7 and L1.Working condition indicator L1 energising back work produces green, and expression is in state to be measured.
3. working stage tests the speed: after photoelectric sensor entered effective measurement zone, infrared ray adopter BG2 received the infrared ray that high speed yarn reflects, and satisfies the turn-on condition of this pipe.At this moment, BG2 forms and the synchronous on off operating mode of revolution yarn speed.The R10 and the IC:C that are serially connected between the BG2 emitter stage and the control utmost point are used to control the operating potential of BG2 and constitute BG2 self amplification.
The on off operating mode of BG2 carries out signal and amplifies by the direct control amplifier BG1 of colelctor electrode of this pipe.Rotational speed pulse signal after BG1 amplifies is through R14, IC; The shaping pulse task is finished in the rectification control of C and R12 FEEDBACK CONTROL and D9.Tach signal after the shaping offers comparator IC:A after adjusting signal strength signal intensity and current potential by W1, controls as the signal output sensitivity.IC; The rotational speed pulse signal of the output of A satisfies the application requirements of computing circuit.
The pulse signal of IC:A output makes switching tube BG7 conducting through R4.After the BG7 conducting, rectifying tube D10 negative electricity potential drop is low, satisfies the turn-on condition of switching tube BG4, the BG4 conducting.Operating current is back to negative pole by UDD through BG5, BG4, R18 and L2 in the measuring circuit.Working condition indicator L2 energising back work produces danger signal, and expression is in test mode.
After the BG4 conducting, cause that the current potential of the control utmost point of BG3 raises, cause BG3 by, L1 does not have operating current, from horizontal blanking.
In above-mentioned measuring process, because of IC:A output be the pulse tach signal, working condition indicating circuit break-make is exchanged, so, make L1 and L2 replace light on and off.
4. the pulse signal of the comparison of test result, output stage: IC:A output carries out frequency ratio by the input of singlechip CPU and the crystal oscillator signal in the machine simultaneously, and the result who obtains by internal arithmetic (al) regularly provides metrical information to display lcd.Regularly change up-to-date surveying record by LCD by liquid crystal.
When the job requirement of single-chip microcomputer in satisfied setting, that is, " continuous three measurement operation result basically identicals are promptly finished the measurement task " afterwards, surveyed the contrast computing that indication and rated rotational frequency are indicated automatically, and is converted into percentage difference.This difference compares with the permissible variation value percentage range of original setting again, obtains three kinds of results: meet the deviation index; Be higher than the deviation index; Be lower than the deviation index.
Above-mentioned three kinds of results change into command signal respectively, by single-chip microcomputer output, and through R2, L5 or R1, L4, or return singlechip CPU after carrying out jointly, and finish last process of measurement: deviation indicator L5 or L4, or carry out flash for prompting jointly, extinguish then.Return to open state.Keep last surveying record, reenter state to be measured or shutdown.
Use speed detector of the present utility model, can test the yarn rotating speed easily, usually.Can in two, three seconds, record a yarn rotating speed above the spindle.By described detecting rotational speed, can draw the yarn twist by formula easily, thereby, can be as requested, the twist of yarn, rotating speed etc. are made adjustment.
In addition, because speed detector of the present utility model can store nearly 999 information, so, the utility model obtains speed detector can be before testing the speed, in advance according to required every index, do the setting (setting 1) of rotating speed achievement data and the setting (setting 2) of deviation tolerance band, enroll the instant utilization that operation program is convenient to detecting rotational speed.
Test case 2
The mensuration of spindle rotating speed
At first, above empty spool, put heat-shrinkable T bush, on heat-shrinkable T bush, paste reflecting strips, as the special-purpose spool of measuring the spindle rotating speed.Then, with the close reflecting strips of rotating of the detection head of speed detector, 1 centimetre of distance, all the other operations are the same.Can record the rotating speed of a spindle in two seconds.
Test case 3
The mensuration of roller rotating speed
At first, under the situation that roller does not stop operating, paste reflector block, be convenient to record the roller rotating speed at roller one end.Then, with the close roller reflector block that is rotating of the detection head of speed detector, apart from 0.5-1 centimetre, all the other operations are the same.Can record the rotating speed of a roller in two seconds.
The shell shape of speed detector of the present utility model can make different shape, wherein, and from consideration easy to use, with rectangular-shaped being advisable of thin piece of similar common electric appliance remote controller.
Speed detector of the present utility model is to form incorporate measurement mechanism by high-precision sensor, detection line, one-chip computer etc., ability with rotating speed of the extremely trickle object that runs up of discriminating, directly the measures of dispersion of rotating speed is assessed in computing, and possesses the long term storage and the search function of detection information.
Thus, speed detector of the present utility model can be done any test and prepare, in two, three seconds, finish the mensuration of the speed of gyration of single ingot yarn, and because described speed detector possesses the demonstration of speed difference signal, so, saved the user and judged the time of surveying rotating speed and mental arithmetic speed difference percentage, detection efficiency further is provided.From accompanying drawing 4 as seen, speed detector of the present utility model can obtain high detecting rotational speed efficient.And by the storage of information, speed detector of the present utility model is convenient to the testing staff and is analyzed immediately and handle.
Self-evident, speed detector of the present utility model not only can be used for the detecting rotational speed of yarn, spindle and roller etc., and also can be used for the detecting rotational speed of other weaving parts etc.The scope that tests the speed of speed detector of the present utility model is at 100-60,000rpm, and the error of its certainty of measurement is less than ± 1 ‰, its tested yarn diameter 〉=0.7mm, the tested diameter of axle 〉=10mm.In addition, speed detector of the present utility model only need use dc source, as, No. five dry cells of three joints get final product.So speed detector of the present utility model is a kind of easy, efficient, desirable weaving speed detector that comprises the yarn rotating speed.
Claims (9)
1. a weaving speed detector is characterized in that,
Described speed detector circuit is made of testing circuit and computing circuit;
Described testing circuit comprises: photoelectric sensor, the signal amplifier that is connected with photoelectric sensor, with the shaping pulse assembly that described signal amplifier, CPU, working condition indicator and sensitivity regulating element are connected simultaneously, sensitivity adjustment element that is connected with above-mentioned shaping pulse assembly and the working condition pointer that is connected with shaping pulse assembly and CPU simultaneously;
Described computing circuit comprises: as the one-chip computer CPU of core component, the keyboard that is connected with CPU, the LCD that is connected with CPU, the crystal oscillator generator that is connected with CPU and memory, the memory that is connected with CPU, the deviation indicator that is connected with CPU, the power-supply controller of electric that is connected simultaneously with CPU and working condition indicator.
2. speed detector as claimed in claim 1 is characterized in that, in foregoing circuit, described photoelectric sensor adopts infrared emission and receiving device, and described signal amplifier is a triode amplifier.
3. speed detector as claimed in claim 1 is characterized in that, in foregoing circuit, described shaping pulse assembly comprises comparison trigger, rectifying tube and resistance.
4. speed detector as claimed in claim 1 is characterized in that, in foregoing circuit, the function of described sensitivity adjustment element is finished by a resistance, and described working condition indicator is a light emitting diode.
5. speed detector as claimed in claim 1 is characterized in that, the resistance of described resistance R 5 as the sensitivity regulating element is at 40-60K ohm.
6. speed detector as claimed in claim 5 is characterized in that, the resistance of described resistance R 5 is 47K.
7. speed detector as claimed in claim 1 is characterized in that, in foregoing circuit, the signal amplifier BG1 of described photoelectric sensor is 9015 type triode amplifiers; The infrared ray adopter BG2 of described photoelectric sensor, described switching tube BG3, BG4, BG7 are respectively 9012,9012 and 9013 type triodes.
8. speed detector as claimed in claim 1 is characterized in that, the comparison trigger IC:A, IC:C, the IC:D that form described shaping pulse assembly are the LM3234 type, and described rectifying tube D9, D10 are respectively 2AP9 and 4148 types.
9. speed detector as claimed in claim 1 is characterized in that, the C1 in the described computing circuit, the capacitance of C2 are 20-22PF.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99252138 CN2417183Y (en) | 1999-12-16 | 1999-12-16 | Arrangement for testing speed of rotating for textile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99252138 CN2417183Y (en) | 1999-12-16 | 1999-12-16 | Arrangement for testing speed of rotating for textile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2417183Y true CN2417183Y (en) | 2001-01-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99252138 Expired - Lifetime CN2417183Y (en) | 1999-12-16 | 1999-12-16 | Arrangement for testing speed of rotating for textile |
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| CN (1) | CN2417183Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1651623B (en) * | 2004-02-04 | 2012-03-21 | 里特机械公司 | Method for manufacturing core-yarn and monitor thereof |
| CN102455366A (en) * | 2010-10-28 | 2012-05-16 | 鸿富锦精密工业（深圳）有限公司 | Fan rotation speed measuring system |
| CN102914989A (en) * | 2011-08-04 | 2013-02-06 | 无锡华润上华科技有限公司 | Brush monitoring method and device |
| CN104005196A (en) * | 2014-06-05 | 2014-08-27 | 湖州博仁纺织品有限公司 | Electronic let-off mechanism loom beam driving device having monitoring function |
| CN104375527A (en) * | 2013-08-12 | 2015-02-25 | 苏州维艾普新材料股份有限公司 | Rotating speed and turn number monitoring device |
| CN104931720A (en) * | 2015-06-25 | 2015-09-23 | 张卫忠 | Photoelectric conversion device and motor rotational speed measuring device comprising same |
| CN106646503A (en) * | 2016-08-26 | 2017-05-10 | 浙江赛安电气科技有限公司 | Yarn speed measurement device, yarn covering and twisting equipment and yarn rotating speed measurement method |
| CN107313136A (en) * | 2017-08-22 | 2017-11-03 | 浙江锦马自动化科技有限公司 | A kind of detectable ingot speed and the two-for-one twister and method of work for judging yarn conditions |
| CN114959967A (en) * | 2022-04-28 | 2022-08-30 | 无锡物联网创新中心有限公司 | Electrical design parameter calibration method and related device of photoelectric device |
-
1999
- 1999-12-16 CN CN 99252138 patent/CN2417183Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1651623B (en) * | 2004-02-04 | 2012-03-21 | 里特机械公司 | Method for manufacturing core-yarn and monitor thereof |
| CN102455366A (en) * | 2010-10-28 | 2012-05-16 | 鸿富锦精密工业（深圳）有限公司 | Fan rotation speed measuring system |
| CN102914989A (en) * | 2011-08-04 | 2013-02-06 | 无锡华润上华科技有限公司 | Brush monitoring method and device |
| CN104375527A (en) * | 2013-08-12 | 2015-02-25 | 苏州维艾普新材料股份有限公司 | Rotating speed and turn number monitoring device |
| CN104005196A (en) * | 2014-06-05 | 2014-08-27 | 湖州博仁纺织品有限公司 | Electronic let-off mechanism loom beam driving device having monitoring function |
| CN104931720A (en) * | 2015-06-25 | 2015-09-23 | 张卫忠 | Photoelectric conversion device and motor rotational speed measuring device comprising same |
| CN106646503A (en) * | 2016-08-26 | 2017-05-10 | 浙江赛安电气科技有限公司 | Yarn speed measurement device, yarn covering and twisting equipment and yarn rotating speed measurement method |
| CN107313136A (en) * | 2017-08-22 | 2017-11-03 | 浙江锦马自动化科技有限公司 | A kind of detectable ingot speed and the two-for-one twister and method of work for judging yarn conditions |
| CN114959967A (en) * | 2022-04-28 | 2022-08-30 | 无锡物联网创新中心有限公司 | Electrical design parameter calibration method and related device of photoelectric device |
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