CN107192338A - Noncontact length-measuring appliance - Google Patents
Noncontact length-measuring appliance Download PDFInfo
- Publication number
- CN107192338A CN107192338A CN201710526380.6A CN201710526380A CN107192338A CN 107192338 A CN107192338 A CN 107192338A CN 201710526380 A CN201710526380 A CN 201710526380A CN 107192338 A CN107192338 A CN 107192338A
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- China
- Prior art keywords
- noncontact
- length
- noncontact length
- measured object
- measuring sensor
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
A kind of noncontact length-measuring appliance of the present invention, it is related to length measurement technique field, including at least one noncontact length measuring sensor, the noncontact length measuring sensor includes housing, and it is arranged at the image-forming module in housing, image processing module, interface control module, the image-forming module includes LASER Light Source, focusing lens, enlarging lens and photo-sensitive cell, the laser beam line focus eyeglass that the LASER Light Source is produced is projected to measured object, by on imaging after enlarging lens to photo-sensitive cell after being reflected through measured object, the photo-sensitive cell high frequency sends view data to image processing module, view data is converted to displacement data by described image processing module, and pulse signal or data signal are converted to by interface control module outwards exported, measurement accuracy is high, speed is fast.
Description
Technical field
The present invention relates to length measurement technique field, more particularly to a kind of noncontact length-measuring appliance.
Background technology
Measured object displacement and linear measure longimetry are the important components of measuring science and metering method, particularly accurate to add
Many fields such as work, Aero-Space, national defense and military and communication all have and its important meaning is closed and acted on, at present, main
Detection mode is the machinery and photoelectric measurement mode of physical contact formula, and these modes are all to use rotatable wheel contacts measured object, by quilt
Survey object to drive by rubbing after runner rotation, record rotation amount to draw displacement, this mode in actual applications, has
Runner effect of attrition measurement accuracy, more smooth surface is difficult to detect or measures that inaccurate, speed is slow, precision is low, direction is single, long
Degree is longer, and measurement accuracy is lower.
The application for a patent for invention of Application No. 99116050.9 disclose it is a kind of be used to measuring solid speed and length be
System includes measurement sensor and signal processing apparatus, and wherein measurement sensor includes laser sensor and signal regulating device,
Signal processing apparatus includes data collecting card and cross-correlation analysis instrument.The present invention is as a result of laser sensor, because two flat
The incidence point of row light beam is exactly measuring probe, therefore testee is not interfered with its measurement process, is not limited by environmental condition
System, is measured available for various occasions；Further, since cross-correlation analysis instrument uses online digital direct computing method, therefore,
Under the premise of identical on-line measurement response speed, its statistical measurement precision is substantially better than polarity correlation analysis, and can reduce can
Signal to noise ratio is surveyed, but the technical scheme is acquired by two groups of measuring probes to data, easily causes error, accuracy is low.
The content of the invention
Present invention aims to overcome that of the prior art not enough there is provided a kind of noncontact length-measuring appliance, measurement is smart
Degree is high, speed is fast.
The present invention is achieved by the following technical solutions：A kind of noncontact length-measuring appliance, including at least one is non-
Contact length measurement sensor, the noncontact length measuring sensor includes housing, and the imaging mould being arranged in housing
Block, image processing module, interface control module, the image-forming module include LASER Light Source, focusing lens, enlarging lens and photosensitive
Element, the laser beam line focus eyeglass that the LASER Light Source is produced is projected to measured object, passes through magnifying glass after being reflected through measured object
After piece on imaging to photo-sensitive cell, the photo-sensitive cell high frequency sends view data, described image processing to image processing module
View data is converted to displacement data by module, and is converted to pulse signal by interface control module or data signal is outside
Output.
Further, in addition to conveying device, control device, positioner, the control device is used to control conveying dress
Put and noncontact length measuring sensor, the control device includes display, the control device is also associated with voltage-stabilized power supply
And acoustic-optic alarm, the positioner is for controlling the spacing between measured object and noncontact length measuring sensor.
Further, the positioner is included with the fixed part of noncontact length measuring sensor homonymy and positioned at another
The elastic portion of side, the fixed part and elastic portion include upward extension bar, and the extension bar is horizontally disposed with close to upper end position
There is roller, positioned measured object by the extruding between two rollers, the elastic portion also includes elastic device.
Further, the elastic device includes column, and the column upper end is fixed with gas spring, the gas by anchor ear
The piston free end of spring is towards fixed part and is fixed with upward extension bar.
Further, the photo-sensitive cell select cmos image sensor or ccd image sensor, the photo-sensitive cell with
The frequency for being not less than 5000/second sends view data to image processing module.
Further, described image processing module includes microprocessor, the microprocessor from DSP microprocessors or
MCU microprocessors.
Further, the interface control module selects DSP microprocessors or MCU microprocessors.
Further, in addition to system shunting means, for by the data comparison of multiple noncontact length measuring sensors,
Sent after merging to control device, the system shunting means is microcomputer.
The calibration method of noncontact length-measuring appliance, comprises the following steps：
A1, is opened, and carries out opening noncontact length-measuring appliance by control device 1, conveying device 2 drives measured object 3 to pass through
Positioner, and then by noncontact length measuring sensor 10；
A2, canonical measure, selection standard length measured object is conveyed through noncontact length measuring sensor through conveying device, warp
Shown after measurement by display and record measurement result；
A3, reverse measuremenet controls conveying device reversely to convey, full-length measured object is used, through conveying device by control device
Noncontact length measuring sensor is conveyed through, is shown after measurement by display and records measurement result；
A4, multiple standard-reverse measuremenet obtains 30-50 group measurement results；
A5, roll adjustment measurement, adjusts positioner, causes the spacing between measured object and noncontact length measuring sensor to change,
A4 operations are repeated, 30-50 group data are obtained；
A6, calculates correction factor, and the data as obtained by control device by A4 and A5 are averaged, and then obtains average value and mark
Business between quasi- value, as correction value S.
The beneficial effects of the present invention are：
1. image is gathered after measured object surface is amplified, characteristic point is produced, to can also be measured compared with smooth surface；
2. increase system shunting means, multiple noncontact length measuring sensors are together in parallel and used, further improve precision,
Signal acquisition program docking port control module in speed, serious forgiveness, extension measurement amount dimension and state, system shunting means is entered
Line number coordinates multiple interface control module data by wired or wireless way gathered data, and composition redundant data is displayed, by
After signal analysis program analysis, the pulse signal or data signal of multidimensional are exported through application interface program.
3. noncontact length measuring sensor has short distance interval with measured object, and in the range of this short distance, interval variation is not
Measurement amount result is not influenceed.
4. the accuracy and speed measured can be converted and improved with hardware configuration.
5. the characteristic that the monochromaticjty of laser is good, coherence is good, good directionality, brightness are high, produces superfine light beam as illuminating
Light source.
6. the multidirectional displacement of measured object can be measured in real time.
Brief description of the drawings
Fig. 1 is intended to for each part position relations diagram of the invention；
Fig. 2 is intended to for noncontact length measuring sensor structural diagrams；
Fig. 3 is intended to for image-forming module principal diagram；
Fig. 4 is block diagram schematic diagram of the present invention；
Wherein：1- control devices, 2- conveying devices, 3- measured objects, 4- acoustic-optic alarms, 5- rollers, 6- extension bars, 7- columns,
8- anchor ears, 9- gas springs, 10- noncontact length measuring sensors, 11- LASER Light Sources, 12- focusing lens, 13- enlarging lens,
14- photo-sensitive cells, 15- housings, 16- interface control modules, 17- image processing modules, 18- image generation modules, 19- cables.
Embodiment
Technical scheme is specifically described below by way of embodiment.
Embodiment 1
Noncontact length-measuring appliance as Figure 1-4, including conveying device 2, control device 1, positioner with it is parallel
Two noncontact length measuring sensors 10, wherein conveying device 2 select conveyer belt, and control device 1 includes display, control dress
Put 1 and be also associated with voltage-stabilized power supply and acoustic-optic alarm 4, positioner includes consolidating with noncontact length measuring sensor homonymy
Determine portion and the elastic portion positioned at opposite side, fixed part and elastic portion include upward extension bar 6, and extension bar 6 is equal close to upper end position
It is horizontally disposed to have roller 5, measured object 3 is positioned by the extruding between two rollers 5, elastic portion also includes elastic device, elasticity
Device includes column 7, and the upper end of column 7 is fixed with gas spring 9 by anchor ear 8, the piston free end of gas spring 9 towards fixed part simultaneously
Upward extension bar is fixed with, noncontact length measuring sensor 10 includes shell 15, and the imaging mould being arranged in shell 15
Block 18, image processing module 17, interface control module 19, image processing module include microprocessor, and microprocessor is micro- from DSP
Processor, interface control module selects MCU microprocessors, and image-forming module includes LASER Light Source 11, focusing lens 12, enlarging lens
13 and photo-sensitive cell 14, the wherein multiplication factor of enlarging lens 13 is 3000-5000 times, and photo-sensitive cell selects ccd image sensor,
LASER Light Source produce laser beam line focus eyeglass 12 be projected to measured object 3, through measured object 3 reflect after by enlarging lens 13 after
On imaging to photo-sensitive cell 14, photo-sensitive cell sends view data, image with the speed of 8000 thousand sheets/second to image processing module
View data is converted to displacement data by processing module, and is converted to pulse signal by interface control module, passes through cable
19 outwards export to system shunting means, and system shunting means is microcomputer, in the shell of control device 1, by two
The data comparison of individual noncontact length measuring sensor, merge after sent to control device 1.
The calibration method of noncontact length-measuring appliance, comprises the following steps：
A1, is opened, and carries out opening noncontact length-measuring appliance by control device 1, conveying device 2 drives measured object 3 to pass through
Positioner, and then by noncontact length measuring sensor 10；
A2, canonical measure, selection standard length measured object is conveyed through noncontact length measuring sensor through conveying device, warp
Shown after measurement by display and record measurement result；
A3, reverse measuremenet controls conveying device reversely to convey, full-length measured object is used, through conveying device by control device
Noncontact length measuring sensor is conveyed through, is shown after measurement by display and records measurement result；
A4, multiple standard-reverse measuremenet obtains 30-50 group measurement results；
A5, roll adjustment measurement, adjusts positioner, causes the spacing between measured object and noncontact length measuring sensor to change,
A4 operations are repeated, 30-50 group data are obtained；
A6, calculates correction factor, and the data as obtained by control device by A4 and A5 are averaged, and then obtains average value and mark
Business between quasi- value, as correction value S.
The workflow of the present invention is as follows：
Noncontact length-measuring appliance is opened, measured object is driven by conveying device passes through positioner, and then non-connect by two
Touch length measuring sensor, the laser beam line focus eyeglass that the LASER Light Source of noncontact length measuring sensor is produced be projected to by
Survey thing, by imaging after enlarging lens to photo-sensitive cell after being reflected through measured object, photo-sensitive cell with the speed of 8000 thousand sheets/second to
Image processing module sends view data, and view data characteristic point is converted to displacement data by image processing module, and is passed through
Interface control module is converted to pulse signal and outwards exported to system shunting means, and then control device, and control device receives arteries and veins
Signal is rushed, and is converted into length value L, length value L then is multiplied into correction value S both obtains measured object actual (tube) length angle value.
Clock module is additionally provided with control device, a time value 3s is set, when 3s inner controllers are not received by
During pulse signal, acoustic-optic alarm triggering.
Claims (9)
1. a kind of noncontact length-measuring appliance, it is characterised in that：It is described including at least one noncontact length measuring sensor
Noncontact length measuring sensor includes housing, and image-forming module, image processing module, the Interface Controller being arranged in housing
Module, the image-forming module includes LASER Light Source, focusing lens, enlarging lens and photo-sensitive cell, what the LASER Light Source was produced
Laser beam line focus eyeglass is projected to measured object, by imaging after enlarging lens to photo-sensitive cell after being reflected through measured object, institute
State photo-sensitive cell high frequency and send view data to image processing module, view data conversion is characterized by described image processing module
Displacement data, and pulse signal or data signal are converted to by interface control module outwards exported.
2. noncontact length-measuring appliance according to claim 1, it is characterised in that also including conveying device, control dress
Put, positioner, the control device be used for control conveying device and noncontact length measuring sensor, the control device bag
Display is included, the control device is also associated with voltage-stabilized power supply and acoustic-optic alarm, and the positioner is used to control to be tested
Spacing between thing and noncontact length measuring sensor.
3. noncontact length-measuring appliance according to claim 2, it is characterised in that the positioner includes connecing with non-
The fixed part and the elastic portion positioned at opposite side of length measuring sensor homonymy are touched, the fixed part and elastic portion include upward
Extension bar, the extension bar close to upper end position be horizontally disposed with have roller, measured object is positioned by the extruding between two rollers,
The elastic portion also includes elastic device.
4. noncontact length-measuring appliance according to claim 3, it is characterised in that the elastic device includes column,
The column upper end is fixed with gas spring by anchor ear, the gas spring piston free end is towards fixed part and is fixed with upwards
Extension bar.
5. noncontact length-measuring appliance according to claim 1, it is characterised in that the photo-sensitive cell is schemed from CMOS
As sensor or ccd image sensor, the photo-sensitive cell is sent with the frequency for being not less than 5000/second to image processing module
View data.
6. noncontact length-measuring appliance according to claim 1, it is characterised in that described image processing module includes micro-
Processor, the microprocessor selects DSP microprocessors or MCU microprocessors.
7. noncontact length-measuring appliance according to claim 1, it is characterised in that the interface control module is selected
DSP microprocessors or MCU microprocessors.
8. noncontact length-measuring appliance according to claim 2, it is characterised in that also including system shunting means, is used
Sent after by the data comparison of multiple noncontact length measuring sensors, merging to control device, the system shunting means
It can select microcomputer.
9. noncontact length-measuring appliance according to claim 2, it is characterised in that comprise the following steps：
A1, is opened, and carries out opening noncontact length-measuring appliance by control device, conveying device drives measured object by positioning
Device, and then pass through noncontact length measuring sensor；
A2, canonical measure, selection standard length measured object is conveyed through noncontact length measuring sensor through conveying device, warp
Shown after measurement by display and record measurement result；
A3, reverse measuremenet controls conveying device reversely to convey, full-length measured object is used, through conveying device by control device
Noncontact length measuring sensor is conveyed through, is shown after measurement by display and records measurement result；
A4, multiple standard-reverse measuremenet, obtains multigroup measurement result；
A5, roll adjustment measurement, adjusts positioner, causes the spacing between measured object and noncontact length measuring sensor to change,
A4 operations are repeated, multi-group data is obtained；
A6, calculates correction factor, and the data as obtained by control device by A4 and A5 are averaged, and then obtains average value and mark
Business between quasi- value, as correction value S.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710526380.6A CN107192338A (en) | 2017-06-30 | 2017-06-30 | Noncontact length-measuring appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710526380.6A CN107192338A (en) | 2017-06-30 | 2017-06-30 | Noncontact length-measuring appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107192338A true CN107192338A (en) | 2017-09-22 |
Family
ID=59880801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710526380.6A Pending CN107192338A (en) | 2017-06-30 | 2017-06-30 | Noncontact length-measuring appliance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107192338A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110017782A (en) * | 2019-05-13 | 2019-07-16 | 广州市康尼斯自动化有限公司 | A kind of multipoint mode object distance measurement method and its structure |
| CN113074643A (en) * | 2021-03-31 | 2021-07-06 | 深圳市霍克视觉科技有限公司 | Non-contact incremental encoder and working method thereof |
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| CN207019625U (en) * | 2017-06-30 | 2018-02-16 | 郑州完美屹克科技有限公司 | Non-contact length-measuring appliance |
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2017
- 2017-06-30 CN CN201710526380.6A patent/CN107192338A/en active Pending
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| CN201177842Y (en) * | 2008-01-21 | 2009-01-07 | 郑源 | Automatic handle fastening machine for financial system |
| CN201168995Y (en) * | 2008-01-31 | 2008-12-24 | 广州金穗华石膏制品有限公司 | Back side shaper for gypsum decorative line |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110017782A (en) * | 2019-05-13 | 2019-07-16 | 广州市康尼斯自动化有限公司 | A kind of multipoint mode object distance measurement method and its structure |
| CN113074643A (en) * | 2021-03-31 | 2021-07-06 | 深圳市霍克视觉科技有限公司 | Non-contact incremental encoder and working method thereof |
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