CN108489406A - A kind of method that Application Optics coding carries out linear measure longimetry - Google Patents
A kind of method that Application Optics coding carries out linear measure longimetry Download PDFInfo
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- CN108489406A CN108489406A CN201810159139.9A CN201810159139A CN108489406A CN 108489406 A CN108489406 A CN 108489406A CN 201810159139 A CN201810159139 A CN 201810159139A CN 108489406 A CN108489406 A CN 108489406A
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- China
- Prior art keywords
- striped
- optical encoding
- groups
- receiving device
- photoemission
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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
The invention discloses a kind of Application Optics to encode the method for carrying out linear measure longimetry, three groups of optical encoding stripeds are printed on even curface, it is detected using three groups of photoemission/receiving devices, it can be absorbed when the light beam of transmitting is incident on dark optical encoding striped, when being incident on the blank of striped, the light intensity of reflection can become strong；In this way when relative displacement occurs for optoelectronic transceiver device and strip encoding, when incident beam passes through the edge of strip encoding, saltus step can occur for the signal of photoelectric receiving device, by the variation and the difference that measure rising edge/failing edge that different stripeds generate, absolute displacement amount can be measured in real time according to algorithm, to achieve the purpose that measure length/height absolute value.The present invention provides a kind of Application Optics to encode the method for carrying out linear measure longimetry, low cost, and high-precision can quickly carry out the absolute value measurement of length and height.
Description
Technical field
The method that the length/height that the present invention relates to a kind of using optical encoding mode measures, feature be it is untouchable,
Low cost, high-precision, measured value are absolute value rather than relative value, and response is rapid, be especially adapted for use in physical examination instrument, mother and baby's scale,
The length/height automatic measurement of portable tape measure.
Background technology
The present invention is not related to the range measurement of large scale, such as radar range finding, satellite triangulation location etc., is not related to minimum yet
The measurement of size（Such as the measurement of micron, Nano grade）.The measurement of length/height has non-in the fields such as industry, daily life
It is often widely applied, in the other especially common range intervals of measurement of millimeter ~ meter level.Have perhaps in the measurement of length/height
Through Several Survey Measure has hand dipping（Such as ruler, tape measure）；Also there are automatic measurement, such as laser ranging, ultrasonic ranging, optics
Encoder, capacitive grating encoder, stepper motor ranging etc..But these measurement methods have certain limitation.Optical encoding striped
It measures：Contactless, absolute value measures, because printing technology may be used in striped, therefore cost is extremely low, and photoemission/connect
It receives also extremely cheap to the cost of pipe.
Invention content
The technical problem to be solved by the present invention is to, under the premise of ensureing low cost, high-precision, good repeatability,
Solve the problems, such as the measurement of absolute displacement amount.
The present invention is to solve above-mentioned technical problem by following technical proposals:The measurement scheme includes three groups of transceivers
Micro photo electric to pipe and corresponding three groups of optical encoding stripeds.
In view of the volume and transmitting/receiving angle of photoelectric tube, the program measurable limit of accuracy is 1mm（If
Not considering economy, such as emits gloss laser tube and be focused, receiver uses highly sensitive photoelectric detector, that
It may also reach up higher accuracy of detection）, three groups of strip encodings are as shown in Figure 1：A groups therein encode each width of fringe
For 2W, interfringe blank spacing is respectively the increasing sequence of 2W, 4W, 6W ....
It is 2W that B groups, which encode each width of fringe, and interfringe blank spacing is respectively 2W；It is width that C groups, which encode each striped,
Degree is W, and interfringe blank spacing is W.
Wherein what A groups coding mainly solved is the measurement problem of absolute displacement；B groups and C groups are combined together and solve
The problem of resolution ratio, also solves the problems, such as moving direction.
Three optoelectronic transceivers correspond respectively to the center of tri- groups of stripeds of ABC, when to pipe and item to alignment centered on pipe
When line generates relative displacement, optoelectronic transceiver can generate corresponding waveform to pipe, be received by three photoelectricity of Schmidt trigger pair
It sends out and shaping is carried out to the output signal of pipe, obtained waveform is as shown in Figure 2：One is generated when A groups encode corresponding infrared tube
Failing edge and and when then generating a rising edge, by being counted to the pulse of B groups and the coding generation of C groups, you can determining
The absolute position of current slide unit.
The impulse waveform generated by comparing B groups and C groups coding can analyze the moving direction of current slide assemblies（It is
It is moved to the increased direction of absolute displacement, or the direction reduced to absolute displacement is moved）.
Coding as shown in Fig. 1, if edging trigger occurs for B groups coding（Either rising edge or failing edge）, such as
The rising edge triggering that fruit C groups are encoded while being generated is then to reduce direction to absolute displacement to move；If C groups are encoded while being generated
Failing edge triggering, then be to be moved to the increased direction of absolute displacement.
It is triggered if rising edge occurs for C groups coding, and the level constant of B groups coding（Either high level or low electricity
It is flat）, then moved to the increased direction of absolute displacement；If failing edge triggering occurs for C groups coding, and the level of B groups coding is permanent
It is fixed（Either high level or low level）, then it is the direction movement reduced to absolute displacement.
Such as when infrared receiving/transmission moves pipe, A groups coding produces a rising edge producing a failing edge again
When, C groups coding produces N number of rising edge accordingly, then the relative displacement moved is L=N*2*W;But it is encoded in A groups and generates rising
Along when, the position of probe is likely located at P=N*2*W+2*W (1+N) * N/2 or P=2*W (1+N) * N/2；In this process
In, when B groups encode, and edging trigger occurs, C groups encode while producing rising edge triggering, then explanation is reduced to absolute displacement
It moves in direction.
Then when A groups encode and generate rising edge, physical location is：P= 2*W(1+N)*N/2；If probe movement
Direction is constant, then C groups coding is often generating a rising edge later, then absolute displacement reduces the distance of 2W.
If the mobile direction of probe is changed, C groups coding is often generating a rising edge later, then absolute position
Move the distance for increasing 2W.
Measuring for real-time absolute displacement can be realized in this way.
In practical application, being that moving photoconductor is received and dispatched to pipe or mobile coding striped, depending on actual conditions（Consider empty
Between, the factors such as size, weight, cost）It is specific to consider.
Preferably, the method can be used at least one of physical examination instrument, pedometer, mother and baby's scale, Electronic tape measure.
Preferably, one kind that the method can be used in other compacts, the non-contacting equipment for measuring displacement.
Present invention can apply to the measurements that physical examination instrument and pedometer, mother and baby's scale etc. are used for height/height, can also apply
In on Electronic tape measure.
The positive effect of the present invention is that：Linear measure longimetry cost can be greatly reduced in many occasions or equipment, carry
High measurement accuracy can be applied to the length testing in many narrow environments, and can be applied to the measurement of various material.
Description of the drawings
Attached drawing 1 is for optical encoding striped schematic diagram, and attached drawing 2 is photoelectric detector impulse waveform schematic diagram, to be served only for
Illustrate, attached drawing 3 is schematic diagram of application structure of the present invention in experiencing instrument.
Specific implementation mode
It is set forth below compared with embodiment, and completely illustrates the present invention in conjunction with attached drawing to become apparent from, but therefore do not send out this
It is bright to be limited among the example ranges.
Embodiment 1
Shown in attached drawing 3, the physical examination instrument of the present embodiment includes a physical examination instrument ontology 100, and physical examination instrument ontology includes that one group of photoelectricity is received
It sends out device 101 and uses fixed mounting means；Optoelectronic transceiver device 101 has optical encoding striped 102 to be printed on above
In the front surface of bar 103, upper boom 103 is integrated with baffle 104, is movable component；Upper boom 103 slides and optoelectronic transceiver device
101 generate relative displacement, and physical examination instrument ontology includes the chassis 105 for allowing measured to stand, when baffle 104 touches measured
The crown when, you can measure the practical height of measured.
As a kind of preferred embodiment, 102 processing technology of optical encoding striped can be spraying, air brushing, silk screen
Printing, adhesive sticker paster, transfer, etching one kind.
As a kind of preferred embodiment, the material of the optical encoding striped 102 can be coating, paint, papery,
At least one of plastics, glass, metal.
As a kind of preferred embodiment, the optical encoding striped 102 can also be several either solid
Tiny spot and striped composition, and fleck（Or tiny striped）Diameter（Or width）Much smaller than the diameter of launching spot.
As a kind of preferred embodiment, the attachment material of the optical encoding striped 102 can be plastics, metal, glass
Glass, timber, ceramics, at least one of cardboard, but necessary surfacing, it is firm that optical encoding striped 102 is easy to adhere to.
As a kind of preferred embodiment, the photoemission/receiving device 101 can be integrated infrared receiving/transmission pair
The transmitting-receiving of pipe, visible light is at least one of pipe, discrete light source emitter and photoelectric detection system.
As a kind of preferred embodiment, the photoemission/receiving device 101 can be in optical encoding striped 102
Homonymy（Reflective measurement）, can also be in offside（Transmission-type measures）.
Although specific embodiments of the present invention have been described above, it will be appreciated by those of skill in the art that these
It is merely illustrative of, protection scope of the present invention is defined by the appended claims.Those skilled in the art is not carrying on the back
Under the premise of from the principle and substance of the present invention, many changes and modifications may be made, but these are changed
Protection scope of the present invention is each fallen with modification.
Claims (16)
1. a kind of measurement method of absolute displacement amount using optical encoding striped, is applicable to linear measure longimetry, can be applied to body
Examine the measurement of instrument, height measure, pedometer, mother and baby's scale, Electronic tape measure equal length/height.
2. it is characterized in that, using three optical encoding stripeds and corresponding three pairs of photoemission/receiving devices.
3. the signal that photoelectric receiving device receives also needs to carry out waveform shaping using the circuit that Schmidt trigger is constituted.
4. the method as described in claim 1, which is characterized in that the preset standard is that single encoded strip length is more than or equal to
The diameter of launching spot.
5. the method as described in claim 1, which is characterized in that the preset standard is that strip encoding width is：W102a =
W102b= 2*W102c , and optical encoding striped minimum fringes width should be greater than the diameter equal to launching spot.
6.（W102a 、W102b、W102cRespectively refer to the width of three groups of stripeds in optical encoding striped）.
7. the method as described in claim 1, which is characterized in that the preset standard is that be equal to minimum fringes wide for measurement accuracy
The half of degree.
8. the method as described in claim 1, which is characterized in that the coating layer thickness for optical encoding striped（Or etching
Depth）Need to meet has certain absorption to its incident light.
9. the method as described in claim 1, which is characterized in that the color of the optical encoding striped in visible light region,
Its color and the color of incident light should have larger difference；In infrared band, striped is compared with blank background, for the wave of incident light
Long absorption should have larger difference（Can be the absorptivity of bigger or the reflectivity of bigger）；
The method as described in claim 1, which is characterized in that spraying, spray may be used in the optical encoding striped processing technology
It paints, silk-screen printing, adhesive sticker paster, transfer or etch process are formed.
10. the method as described in claim 1, which is characterized in that the material of the optical encoding striped can be coating, oil
At least one of paint, papery, plastics, glass, metal.
11. the method as described in claim 1, which is characterized in that the optical encoding striped, can also either solid
It is several tiny spots and striped composition, and fleck（Or tiny striped）Diameter（Or width）It is straight much smaller than launching spot
Diameter.
12. the method as described in claim 1, which is characterized in that the attachment material of the optical encoding striped can be plastics,
Metal, glass, timber, ceramics, at least one of cardboard, but necessary surfacing, it is firm that optical encoding striped is easy to adhere to.
13. the method as described in claim 1, which is characterized in that the photoemission/receiving device can be integrated infrared
The transmitting-receiving to pipe, visible light is received and dispatched to pipe, discrete light source emitter and photoelectric detection system（Such as silicon photo diode）In
It is at least one.
14. the method as described in claim 1, which is characterized in that the photoemission/receiving device can be in optical encoding item
The homonymy of line（Reflective measurement）, can also be in offside（Transmission-type measures）.
15. the method as described in claim 1, which is characterized in that between the photoemission/receiving device and optical encoding striped
Relative moving speed maximum rate be limited to photoelectric receiving device response speed and rear class signal processing circuit response speed
The processing speed of degree and MCU.
16. the method as described in claim 1, which is characterized in that the electric signal generated to photoelectric receiving device needs to use
Schmitt trigger circuit carries out shaping so that stripe edge triggering is more sensitive, reduces false triggering caused by shake, improves detection
Sensitivity and precision.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810159139.9A CN108489406A (en) | 2018-02-26 | 2018-02-26 | A kind of method that Application Optics coding carries out linear measure longimetry |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810159139.9A CN108489406A (en) | 2018-02-26 | 2018-02-26 | A kind of method that Application Optics coding carries out linear measure longimetry |
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| CN108489406A true CN108489406A (en) | 2018-09-04 |
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| CN201810159139.9A Pending CN108489406A (en) | 2018-02-26 | 2018-02-26 | A kind of method that Application Optics coding carries out linear measure longimetry |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020061878A1 (en) * | 2018-09-27 | 2020-04-02 | Tti (Macao Commercial Offshore) Limited | Electronic measuring device and method thereof |
| CN111860301A (en) * | 2020-07-17 | 2020-10-30 | 苏州英诺威视图像有限公司 | Component position detection method and system |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101368831A (en) * | 2007-04-11 | 2009-02-18 | 三丰株式会社 | Absolute position length-measurement type encoder |
| CN102095379A (en) * | 2010-08-27 | 2011-06-15 | 中国科学院长春光学精密机械与物理研究所 | Absolute grating scale |
| CN104613994A (en) * | 2013-11-05 | 2015-05-13 | 株式会社安川电机 | Encoder, motor with encoder, and servo system |
| CN104677394A (en) * | 2013-11-29 | 2015-06-03 | 刘伯安 | Code and device for sensing position or angular position |
| CN204404987U (en) * | 2015-01-26 | 2015-06-17 | 徐洪明 | A kind of fixed grid for length-measuring appliance |
| CN104748774A (en) * | 2013-12-25 | 2015-07-01 | 株式会社三丰 | Optical encoder |
| CN105444790A (en) * | 2014-12-17 | 2016-03-30 | 大连华宇冶金设备有限公司 | Linear long-distance absolute value position optical encoder |
| CN105627921A (en) * | 2015-12-18 | 2016-06-01 | 佛山轻子精密测控技术有限公司 | Absolute encoder subdivision acquisition system and measurement method thereof |
-
2018
- 2018-02-26 CN CN201810159139.9A patent/CN108489406A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101368831A (en) * | 2007-04-11 | 2009-02-18 | 三丰株式会社 | Absolute position length-measurement type encoder |
| CN102095379A (en) * | 2010-08-27 | 2011-06-15 | 中国科学院长春光学精密机械与物理研究所 | Absolute grating scale |
| CN104613994A (en) * | 2013-11-05 | 2015-05-13 | 株式会社安川电机 | Encoder, motor with encoder, and servo system |
| CN104677394A (en) * | 2013-11-29 | 2015-06-03 | 刘伯安 | Code and device for sensing position or angular position |
| CN104748774A (en) * | 2013-12-25 | 2015-07-01 | 株式会社三丰 | Optical encoder |
| CN105444790A (en) * | 2014-12-17 | 2016-03-30 | 大连华宇冶金设备有限公司 | Linear long-distance absolute value position optical encoder |
| CN204404987U (en) * | 2015-01-26 | 2015-06-17 | 徐洪明 | A kind of fixed grid for length-measuring appliance |
| CN105627921A (en) * | 2015-12-18 | 2016-06-01 | 佛山轻子精密测控技术有限公司 | Absolute encoder subdivision acquisition system and measurement method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020061878A1 (en) * | 2018-09-27 | 2020-04-02 | Tti (Macao Commercial Offshore) Limited | Electronic measuring device and method thereof |
| CN111860301A (en) * | 2020-07-17 | 2020-10-30 | 苏州英诺威视图像有限公司 | Component position detection method and system |
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Application publication date: 20180904 |
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