CN1081326C - Laser on-line testing and checking apparatus for rubber element outline - Google Patents
Laser on-line testing and checking apparatus for rubber element outline Download PDFInfo
- Publication number
- CN1081326C CN1081326C CN 98111409 CN98111409A CN1081326C CN 1081326 C CN1081326 C CN 1081326C CN 98111409 CN98111409 CN 98111409 CN 98111409 A CN98111409 A CN 98111409A CN 1081326 C CN1081326 C CN 1081326C
- Authority
- CN
- China
- Prior art keywords
- circuit
- ccd
- measuring head
- signal
- output
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Length Measuring Devices By Optical Means (AREA)
Abstract
The present invention relates to a laser on-line detector for the outline of a rubber component. A laser beam is used as a probe, and diffuse reflection light spots formed on the surface of a detected object by the irradiation of the laser beam are used as sensing signals. An optical image-forming principle is used for converging collected diffuse reflection light to an electrical coupling device CCD to realize photoelectric conversion. When incident light moves along the surface of the detected object, an imaging point moves correspondingly, and a standard curve is obtained on a standard thickness board according to the magnitude of image drift to work out accurate a thickness value and a width value. The present invention can be widely used for the real-time measurement of the thickness, the width and the outline of components in rubber industry.
Description
The present invention relates to the measurement of length, thickness and similar linear dimension, relate in particular to laser measuring technology.
The method of existing on-line measurement thickness is a lot, and electric vortex method, capacitance method, X ray diffraction method, X ray correlation method, β ray transmission method, alpha ray transmission beam method, supercritical ultrasonics technology, microwave method, laser scanning method, laser detector displacement method are arranged.In the method for these on-line measurement thickness, except the method for laser measurement thickness, all there is the not high easy drift of precision in other method, linearity is poor, equipment is complicated, and the ray that has is harmful, radioactive source shortcomings such as measuring error is big after the half life period.For details see attached table 1
| Principle | Range | Degree of accuracy | Resolution | Advantage | Shortcoming |
| Current vortex | ＜10mm | (1～3)％ | (0.3～1)％ | The dirt of noncontact oil resistant | The not high easy drift of precision |
| Electric capacity | 200um | (0.5～1)％ | 0.01um | Contactless high-precision | To the environmental requirement height |
| X ray diffraction | 0.1～1um | (0.2～1)％ | 1％ | Noncontact | Linear difference equipment complexity |
| The X ray correlation | 1～100mm | 1％ | 0.1％ | Noncontact is quick | Ray is harmful |
| The β transmission of radiation | 6～100mm | (0.2～0.75)％ | 0.1％ | The noncontact wide-range | The harmful radioactive source of ray after the half life period error big |
| The gamma-rays transmission | ＞100mm | 1％ | Noncontact wide-range penetration capacity is strong | The harmful radioactive source of ray after the half life period error big | |
| Ultrasound wave | 1～100mm | (0.1～1)％ | Noncontact | Homogeneous media influences precision | |
| Microwave | 0.1～6mm | 1％ | 0.08 | Noncontact | To the environmental requirement height |
| Laser scanning | Several meters | 0.6％ | 0.2％ | The noncontact wide-range | Scanning linearity difference recognition differential |
| The laser detector displacement | Micron is to several meters | 0.1％ | 0.02％ | The high-resolution HPDR is wide | The equipment complicated optics will be taked safeguard procedures |
Existing name is called No. 91102933 patents of " process for measuring on line length by laser microcomputer and device ", a kind of high coherence who utilizes laser is disclosed, form interference fringe at measurement zone, the cumulative movement body by the time umber of pulse that produces and the interval of equidistant striped, can obtain the length of movable body by measuring point.This invention is a length of utilizing laser interferencefringes on-line measurement object, what use is He-Ne pipe gas laser, and wavelength 6328nm uses photomultiplier to make detecting element, output signal is an analog quantity, be applicable to metal, nonmetal on production line gauge length.
Purpose of the present invention, it is good to provide a kind of measurement resolution, wide accommodation, response speed is fast, the laser on-line testing and checking apparatus for rubber element outline that precision is high.
Principle of work of the present invention is: the mechanical probes with laser beam during as contact measurement, utilize diffuse reflection hot spot that laser beam irradiation forms to unit under test surface as transducing signal, converge on the charge coupled device ccd with diffusing of will collecting of optical imaging concept, realize opto-electronic conversion, when incident light is mobile with the measured object surface, imaging point is made corresponding mobile according to certain rules, according to the image drift size, the typical curve that use obtains on the standard thickness plate that national metrological service demarcates converses thickness and width value accurately.
Fig. 1 is a structured flowchart of the present invention;
Fig. 2 is the mechanical scanning structural drawing; Among the figure:
1, left riser; 2, go up ball-screw; 3, bulb driving lever; 4, go up rolling guide; 5, go up laser measuring head; 6, calibrated bolck; 7, following laser measuring head; 8, following rolling guide; 9, following ball-screw; 10, synchronous pulley; 11, be with synchronously; 12, right riser; 13, motor cabinet; 14, stepper motor; 15, synchronous pulley; 16, synchronous pulley; 1～1, optoelectronic switch; 1～2, travel switch; 1～3, solenoid valve; 1～4, reducing valve strainer.
Fig. 3 is signal Processing and current loop circuit;
Fig. 4 is CCD driving circuit figure;
Fig. 5 is the interface board for computers block diagram;
Fig. 6 is the system software process flow diagram.
One-piece construction of the present invention is as described in the accompanying drawing 1, and mainly by LASER Light Source, photoelectricity receives, and computer data acquiring is handled and high-speed data communications, several most of compositions such as measuring head mechanical scanning driving.
1. LASER Light Source: it is the 670nm red light semiconductor laser that the present invention adopts wavelength, and has used collimation lens and condenser lens, to improve beam quality; In the laser power supply design, adopted automated power control, promptly utilize the current signal that becomes ratio with output power of the photo-detector diode output of semiconductor laser inside to carry out negative feedback control, make laser output power at room temperature be stabilized in ± 1%, to overcome the light-intensity variation that temperature and other factors cause, improve measuring accuracy.
2. light signal receives: the diffuse reflection that the laser radiation body surface forms enters imaging lens; imaging lens relative aperture 1: 1.2; focal length 50mm; in order to prevent aqueous vapor and effect of dust; measuring head adopts full-closed structure, at laser exit place and camera lens front coated glass and gases at high pressure air curtain len is installed.
3. opto-electronic conversion (reception): the CCD charge-coupled image sensor that optical detection device uses: 1.. picture dot number: 2048; Picture dot size: 13um * 13um; Frequency of operation: 5M; Dynamic range: 7500: 1; Peak wavelength: 700nm; 2. picture dot number: 5340; Picture dot size: 7um * 7um; Frequency of operation: 5MHZ;
CCD drives and signal Processing: master oscillator frequenc: 8MHZ; Sweep frequency: (2～4) MHZ is optional; Integral time: (2.2～4) ms is optional.Signal Processing has adopted compound, the amplification of parity signal; Low-pass filtering; The peak signal integration; Floating threshold relatively; Photoelectricity is isolated measures such as output, thereby has improved measuring accuracy greatly, has strengthened antijamming capability.
4. mechanical scanning: because maximum translational speed 250mm/s 12 seconds (3 meters) transmission times of each tyre surface of measured tyre surface; drive unit is seen accompanying drawing 2; adopt the door type structure; stepper motor 14 is by synchronous pulley 16 and be with 11 to drive ball-screw 2 up and down synchronously; 8 rotate; again by ball-screw nut 2; 8 and the measuring head of bulb driving lever 3 drive installations on rolling slide block 6 along the guide rail bidirectional-movement; in computer control; the continuous back and forth movement of following measuring head; because two measuring heads were to guarantee the accuracy of measuring position about the employing single motor drove simultaneously; the frequency of operation height; mechanical rotation inertia is big; common stepper motor driver is difficult to meet the demands; the present invention has used the New IGBT high frequency; high pressure; constant current; chopper driver; volume is little; in light weight; high-frequency drive moment is big; the efficient height; power consumption is little; in order to prevent the accurate location of motor collision measuring head out of control and width; motor drive signal adopts optoelectronic switch and mechanical limit switch two-stage interlock mode; when switch motion; in time cut off drive signal, if the mechanical limit switch action, the reset relay action of available computers control limit switch also oppositely manually breaks away from protective position.
5. width measure: the speed of the stepper motor that the present invention uses is variable, the highest driving frequency 6K, and the switching rate of CCD according to the resolution and the accuracy requirement of system, is selected different parameters as described above.When the scattered light of the object of certain width gathers CCD when going up, corresponding a plurality of electric signal are just arranged, the width that a certain number of like this electric signal is just corresponding certain.
6. signal Processing and transmission:
Because the electric signal that electrooptical device is exported is more weak, poor anti jamming capability, therefore, must be through the processing on certain circuit, can become effective signal just now, and this signal is to produce as the foreground sniffer, from on-the-spot principal computer certain distance is arranged, in the industry spot environment, after the signal process that the present invention produces CCD is necessarily handled, pass to the interface circuit of principal computer with the form of electric current loop, so in fact the rubber thickness signal has been passed to principal computer, finished the conversion and the reception of signal.
CCD driving circuit of the present invention is seen accompanying drawing 4, and its circuit connects frequency-halving circuit for the crystal oscillator start-oscillation circuit, is connected to divide by four circuit again, is connected to voltage conversion circuit again, is connected to CCD hour hands signal pulse; Wherein frequency-halving circuit also is connected to the fractional frequency division circuit, is connected to CCD frame signal circuit, is connected to voltage conversion circuit, is connected to the pulse of CCD frame signal.
Accompanying drawing 3 is signal Processing and current loop circuit:
The line that comes out from CCD connects CCD idol signal sampling circuit and the strange signal sampling circuit of CCD, two circuit all are connected to the ccd signal compound circuit, and are connected to peak value circuit and this signal circuit of taking a sample, and are connected to signal comparator circuit again, be connected to pulse output Shaping circuit again, connect electric current annular output circuit at last.
7. computer interface circuit: see accompanying drawing 5, its structure is: parallel interface, circuit for controlling motor, the event counter circuit links by the system bus of address bus and data bus and main frame, and clock circuit then provides Electric Machine Control and the required clock signal of signal counting circuit.Switching value output and motor control signal that parallel port provided are exported by light-coupled isolation.
Measuring-signal is imported after signal processing circuit is handled back feed signals counter by isolating.
This interface circuit is finished the control of host computer to the foreground pick-up unit, switch as each signal power source, the control of mechanical scanning drive unit transmits signal collection to the foreground with the electric current loop type, and this gathers and has in fact finished the collection of principal computer to thickness signal.
8. data communication:
The next system controlled by computer structure in the employing, article three, production line is by three slave computer control surveys, the computing machine of master control room double as host computer except the measurement of making standard model uses, and the measurement data of slave computer can be sent to host computer and do relevant demonstration, processing, storage, printing etc.About 100 meters of the data transmission distance of every production line of pulpit distance, computing machine adopt photoelectricity to isolate RS-485 industrial standard serial line interface transmission data, and transfer rate is 36.8Kb/s, and the data communication amount is big, and transmission speed is fast, and interference performance is strong.
9. control computer:
Main control room computing machine and production line computing machine adopt upper and lower computer control structure mode.
Computer software process flow diagram of the present invention is seen accompanying drawing 6.
Start back system loads control program automatically.
After program begins to carry out, at first carrying out Chinese character shows, the initialization of load module, so that system's display reminding information and user import various operational factors, carry out the self check of system then, self check can be found software and some hardware faults, the initial setting up parameter that the errorless back of self check system begins each required interrupt vector of this software is set and calls in system default is after setting is finished, after corresponding interruption takes place, can call corresponding interrupt service routine handles, so far, software enter key scanning sequence is if there is key to press, software just enters the command list enquiry module according to pairing key assignments, carries out corresponding functional modules according to key assignments.
System reset: remove all parameters and buffer data, the initial set value of recovery system;
System self-test: find system failure point;
Parameter is provided with: fetalism is set, metering system, data such as operating personnel;
Manual measurement: can the manual measurement single-point, many branches, last tyre surface, raw data such as following tyre surface;
Automatically measure: according to the parameter of setting, carry out scanning survey automatically, and show automatically, storage, overproof warning etc.
Data processing: show per tour time real-time tyre surface data; Print the record data that need.
System calibrating: carry out the calibration of measuring accuracy;
Default order: if not normal instruction, then ignore, and it is removed from the order value sequence.
More than each functional module complete after, all get back to the key scanning state, so that carry out user's Next Command.
If when key scanning, find it is to exit command, just with after the preservation of work at present state, the interrupt vector of system is returned to system software call in former state, quit a program.
10. standard correction and dedusting gas circuit
The transmission drum is paid the driving calibrated bolck by accurate screw mandrel, nut and is moved up and down 40mm, the every lattice 0.01mm of drum scale, and every circle 100 lattice, displacement error is not more than ± 0.05mm, and the dedusting gas circuit adopts filtering pressure reducing valve to regulate output pressure (2～3) Kg/cm
2, gases at high pressure become 60 ° taper air curtain to pollute to prevent dust and dirt by conveyance conduit at the laser of measuring head with imaging window front.
11. data processing method:
A. measuring method: because rubber components can the dipping and heaving shake in moving process, the present invention adopts up and down the double light path penalty method to measure.See accompanying drawing 4, on the D=Do+D+D under
B. error correction:
1). static error: proofread and correct with on-gauge plate, each benchmark Do that surveys earlier when benchmark Do has △ D to change, also have △ D to change during measurement, but △ Di is constant.
2). gamma correction: adopt two kinds of methods as required
Polygometry: the on-gauge plate of establishing different-thickness respectively according to the image displacement curve measure the Dpn value.Correction factor Kn=standard thickness of slab Lpn/ (Dpn-Do) deposits Dpn and Kn in computing machine, get corresponding Kn by the span of Di and proofread and correct, promptly on the Di=Kpn * Di on+KpnT * Di under+Do.
Curve fitting: the on-gauge plate of establishing different-thickness respectively according to the image displacement curve measure the Dpn value, utilize curve fitting algorithm to calculate the standard fit curve, after using down measured value during measurement respectively and obtaining one-tenth-value thickness 1/10, utilize curve equation to calculate the thickness of measured point.
3). dynamic calibration:
Because the diffuse signal of rubber components is very faint, the unevenness on surface and special shape can make detection signal change even cause losing of signal, therefore, the present invention has adopted methods such as difference and multiple spot be level and smooth to carry out the dynamic calibration of measurement data.
During use, apparatus of the present invention are installed in the rubber components production line, steel wire is pressed the centre or the rearmost position of grinding production line, be used for the pilot process of parts or the measurement of final finished, for production provides measurement data directly perceived and reliable, during measurement, computer control high-speed stepper motor driver, driving up and down by two ball-screws, two signal measurement heads come flyback retrace along the component width direction synchronously, LASER Light Source is housed respectively in the measuring head up and down, imaging lens, treatment circuit is measured in the driving of charge-coupled image sensor, utilizing up and down, two measuring-signal variates can overcome the influence of shaking up and down in the parts moving process thickness effectively, through amplifying, variable thresholding compares metering circuit with thickness signal, the shaping buffering, the photoelectricity isolation is carried out data processing after computing machine is delivered in the transmission of long line, show that storage is printed.
Apparatus of the present invention practice in high-capacity tyre factory of joint-stock company of Shanghai rubber group, Shanghai high-capacity tyre factory of rubber tyre incorporated company is a domestic maximum wire radial-ply tyre manufacturer, have domestic state-of-the-art production equipment, 1,000,000 tires of annual production, the output value 1,000,000,000, this device is installed in standard shape of the mouth as one speaks chamber respectively, on two import production lines and the home made production line, uses through reality.Obtain extraordinary result.The key technical indexes:
1. production line component width, thickness are detected in real time, show section profile and data.And adopted the upper and lower computer structure, and data are handled, show that storage is printed.
2. unit under test breadth extreme＜700mm, the width measure static error＜± 0.2mm, dynamic error＜± 1mm.
3. unit under test thickness range 0～30mm, measuring error＜± 0.2mm.
4. unit under test translational speed＜15m/ branch, scan head speed＞60mm/s.
The present invention can be widely used in thickness, the width of rubber industry parts, the real-time measurement of profile, has non-cpntact measurement, injured surface not, non-environmental-pollution, antijamming capability is strong, the precision height, characteristics such as data acquisition process function are the visual plants of rubber tyre industry production line products quality control.
Embodiment:
1. LASER Light Source employing wavelength is the 670nm red light semiconductor laser, imaging lens relative aperture 1: 1.2, and focal length 50mm, optical detection device uses the CCD charge-coupled image sensor: 1. picture dot several 2048; Picture dot size: 13um * 13um; Frequency of operation: 20MHZ; Dynamic range: 7500: 1; Peak wavelength: 700nm; The maximum translational speed 250mm/s of tested tyre surface, long 3 meters of each tyre surface, 12 seconds transmission times; Computing machine adopts photoelectricity to isolate RS-485 industrial standard serial line interface transmission data, and transfer rate is counted 36.8Kb/s; Calibrated bolck moves up and down 40mm, the every lattice 0.01mm of drum scale, and every circle 100 lattice, displacement error is not more than ± 0.005mm, and the dedusting gas circuit adopts filtering pressure reducing valve to regulate output pressure (2～3) Kg/cm
2, gases at high pressure form 60 ° the key shape band of gas in the laser imaging window front of measuring head by conveyance conduit.
2. optical detection device uses the TCD1500C of Toshiba.Picture dot size: 7um * 7um; Frequency of operation: 5MHZ, remainder are with example 1, and the resolution of system and measurement range can double.
Claims (8)
1, a kind of laser on-line testing and checking apparatus for rubber element outline, establish the measuring head of the charge coupled device ccd of lasing light emitter and preposition imaging lens in comprising, drive the driver part of measuring head, and and lasing light emitter, charge coupled device ccd, control and data processing unit that driver part is electrically connected, it is characterized in that: also be provided with the signal processing unit that is electrically connected with charge coupled device ccd in the measuring head, said measuring head is last measuring head (5) and following measuring head (7), on, following measuring head (5,7) the be placed in both sides of mobile tested rubber components, and respectively with interface circuit, driver part is connected, wherein
1.1 lasing light emitter is the red light semiconductor laser that is provided with collimation lens and condenser lens on the output light path successively, is equipped with output power negative feedback device in the input circuit of said laser instrument,
1.2 signal processing unit is that the input end of CCD idol signal sampling circuit and the strange signal sampling circuit of CCD is connected with charge coupled device ccd, output terminal is connected with the ccd signal compound circuit, the peak value circuit is connected with the ccd signal compound circuit with the input end of this signal circuit of sampling, output terminal is connected with electric current annular output circuit behind pulse output Shaping circuit
1.3 interface circuit is a parallel interface, circuit for controlling motor, the event counter circuit is through address wire, data line is connected with the system bus at integrated industrial Control work station, the output terminal of parallel interface be connected with switching value spacing output circuit that up-computer connects, the output terminal of circuit for controlling motor be connected with spacing output circuit that the power supply for step-by-step motor of driver part connects, the Signal Spacing input circuit that connects with the annular output circuit of the electric current in the signal processing unit connects the event counter circuit with clock circuit after signal processing circuit, clock circuit is connected with circuit for controlling motor
1.4 driver part is for being provided with ball-screw (2), following ball-screw (9) and stepper motor (14) on the framework that constitutes at left riser (1), right riser (12) and last rolling guide (4), following rolling guide (8), said upper and lower rolling guide (4,8) be equipped with on and roll the upper and lower measuring head (5 that connects with it, 7), said upper and lower ball-screw (2,9) through bulb driving lever (3) and upper and lower measuring head (5,7) connect, said stepper motor (14) is through band (11) and upper and lower ball-screw (2,9) solderless wrapped connection synchronously.
2, device according to claim 1 is characterized in that upper and lower measuring head (5,7) is cylindric obturator, is equipped with coated glass and gases at high pressure curtain at its measuring junction.
3, device according to claim 1, the relative aperture that it is characterized in that the preposition imaging lens of charge coupled device ccd is 1: 1.2, focal length is 50 millimeters.
4, device according to claim 1, the driving circuit that it is characterized in that charge coupled device ccd is input termination crystal oscillator start-oscillation circuit, output terminal tap divide by four circuit and the multistage frequency dividing circuit of frequency-halving circuit, the input termination divide by four circuit of voltage conversion circuit, output termination CCD clock signal pulse, the multistage frequency dividing circuit of input termination of CCD frame signal circuit, output terminal connects the pulse of CCD frame signal behind voltage conversion circuit.
5, device according to claim 1 is characterized in that the power supply for step-by-step motor of integrated industrial Control work station and up-computer, driver part, connecting of output circuit of the annular of the electric current in the signal processing unit constitute the photoelectricity isolation coupling.
6, device according to claim 1 is characterized in that being arranged with on rolling guide (4) and the last measuring head (5) optoelectronic switch (1-1) of pairing.
7, device according to claim 1 is characterized in that being equipped with on the left and right riser (1,12) travel switch (1-2) with last measuring head (5) adapted.
8, device according to claim 1, it is characterized in that being equipped with on the left riser (1) reducing valve strainer (1-4) and with the solenoid valve (1-3) of its adapted, the outlet of said solenoid valve (1-3) connects through the gases at high pressure curtain generator of pipeline and upper and lower measuring head (5,7) end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98111409 CN1081326C (en) | 1998-07-11 | 1998-07-11 | Laser on-line testing and checking apparatus for rubber element outline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98111409 CN1081326C (en) | 1998-07-11 | 1998-07-11 | Laser on-line testing and checking apparatus for rubber element outline |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1215151A CN1215151A (en) | 1999-04-28 |
| CN1081326C true CN1081326C (en) | 2002-03-20 |
Family
ID=5221391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98111409 Expired - Fee Related CN1081326C (en) | 1998-07-11 | 1998-07-11 | Laser on-line testing and checking apparatus for rubber element outline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1081326C (en) |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101543844B (en) * | 2009-04-30 | 2010-10-20 | 中色科技股份有限公司 | Online thickness measurement and control method for metal alloy sheet strip hot rolling mill |
| US9204129B2 (en) * | 2010-09-15 | 2015-12-01 | Perceptron, Inc. | Non-contact sensing system having MEMS-based light source |
| CN102355553A (en) * | 2011-10-11 | 2012-02-15 | 陈博威 | Method for realizing light shadow calligraphic work |
| ITMI20112253A1 (en) * | 2011-12-13 | 2013-06-14 | Pirelli | METHOD OF CHECKING THE DEPOSITION OF ELEMENTARY SEMI-FINISHED PRODUCTS IN A PNEUMATIC TIRE PROCESS FOR VEHICLE WHEELS |
| CN102679892B (en) * | 2012-05-11 | 2014-11-12 | 华中科技大学 | Single-lens laser trigonometry thickness measuring instrument |
| KR102043459B1 (en) * | 2013-11-11 | 2019-11-11 | 삼성에스디아이 주식회사 | Web thickness measuring equipment and method |
| CN103853519B (en) * | 2014-03-05 | 2016-08-17 | 广州威沃电子有限公司 | Yield display system |
| CN104567701B (en) * | 2014-12-17 | 2017-08-15 | 烟台大学 | A kind of high-precision template part calibrator |
| CN104567715A (en) * | 2014-12-29 | 2015-04-29 | 爱彼思（苏州）自动化科技有限公司 | Upper and lower matching type workpiece structure and dimension detection device |
| CN105479614A (en) * | 2015-11-14 | 2016-04-13 | 青岛科技大学 | Novel dynamic full-automatic continuous weighing device for rubber continuous mixing |
| CN106197296A (en) * | 2016-08-01 | 2016-12-07 | 常熟理工学院 | The measurement apparatus of Reducing thickness after a kind of plate-type heat exchanger slab die mould |
| JP6575824B2 (en) * | 2017-03-22 | 2019-09-18 | トヨタ自動車株式会社 | Film thickness measuring method and film thickness measuring apparatus |
| JP6805078B2 (en) * | 2017-05-25 | 2020-12-23 | 株式会社神戸製鋼所 | Rubber sheet monitoring device and rubber sheet monitoring method |
| CN107817117B (en) * | 2017-12-01 | 2023-10-27 | 吉林大学 | Real-time measuring device and measuring method for mechanical properties of tire |
| CN108917623B (en) * | 2018-07-10 | 2020-05-22 | 新沂市铭达玻璃有限公司 | Automobile glass window thickness detection tool |
| CN109916307A (en) * | 2018-12-27 | 2019-06-21 | 河南中原光电测控技术有限公司 | Variable power laser measurement method and device |
| CN115128023B (en) * | 2022-06-02 | 2024-08-27 | 汉威科技集团股份有限公司 | Laser gas detection system with self-diagnosis function and gas real-time calibration method |
| CN117460125B (en) * | 2023-10-26 | 2024-07-12 | 北华航天工业学院 | Intelligent control system and method for UV light energy compensation |
| CN117419646B (en) * | 2023-12-19 | 2024-03-15 | 南京牧镭激光科技股份有限公司 | Method and system for monitoring displacement of fan spindle based on laser sensor |
-
1998
- 1998-07-11 CN CN 98111409 patent/CN1081326C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1215151A (en) | 1999-04-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1081326C (en) | Laser on-line testing and checking apparatus for rubber element outline | |
| CN101266137A (en) | Axis external diameter length detection process and device | |
| CN103791860A (en) | Tiny angle measuring device and method based on vision detecting technology | |
| CN103837086B (en) | A kind of slab length device for dynamically detecting based on FPGA with high accuracy light curtain | |
| CN101000252A (en) | Double-raster displacement sensor | |
| CN111781433B (en) | Tapered double-layer medium interface charge measuring device and method | |
| CN105588847A (en) | Great-depth OCT (optical coherence tomograph) scanning device and method for nearly transparent minerals | |
| CN104528508B (en) | A kind of contactless escalator Multi-parameter Measurement Method based on photoelectricity testing part | |
| CN207007114U (en) | A kind of automobile roll shape beam multiple spot laser displacement sensor three-dimensional measuring apparatus | |
| CN100590382C (en) | Large sized platform deflection amount photoelectric measuring method | |
| CN104019773A (en) | Wire rod surface roughness measuring method and device for implementing method | |
| CN111336939B (en) | Machine vision-based online detection method and device for gap between explosion-proof joint surfaces | |
| CN105157583A (en) | Axle journal length measurement system | |
| CN107091612A (en) | A kind of width of plate slab device for dynamically detecting based on FPGA and laser triangulation | |
| CN102788844B (en) | Automatically ultrasonic detection system for automatically correcting crack of bend pipe | |
| CN114397013B (en) | Laser power meter and method for calibrating sampling coefficient of large optical system based on same | |
| CN108709509B (en) | Contour camera, matched oversized-diameter revolving body workpiece non-contact caliper and non-contact revolving body measuring method | |
| CN110143218A (en) | A kind of high-speed railway track switch straightness and distortion angle detection method and its detection device | |
| CN206387440U (en) | Oil tank of transformer bubble detection device | |
| CN210862464U (en) | Range finding removes slip table | |
| CN202267533U (en) | Interferometer shearing amount on-line detection system | |
| CN109813235B (en) | Long-distance laser displacement detection device | |
| CN210375028U (en) | Remote vision-based laser surface difference detection system | |
| CN103148805A (en) | Photoelectric detector array-based glass shape detection system | |
| CN111538065A (en) | Online scanning parameter detection system for electron beam of irradiation accelerator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |