CN2596322Y - Absolute photoelectric encoding rule - Google Patents
Absolute photoelectric encoding rule Download PDFInfo
- Publication number
- CN2596322Y CN2596322Y CN 02251060 CN02251060U CN2596322Y CN 2596322 Y CN2596322 Y CN 2596322Y CN 02251060 CN02251060 CN 02251060 CN 02251060 U CN02251060 U CN 02251060U CN 2596322 Y CN2596322 Y CN 2596322Y
- Authority
- CN
- China
- Prior art keywords
- code channel
- coded scale
- thick
- utility
- code
- 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
Abstract
The utility model relates to an absolute photoelectric encoding rule, which is used for measuring line displacement. The utility model is composed of a rule shell 1, a reading head shelf, a photoelectric receiver 3, a slit 4, a light source 5 and a coding rule 6, wherein, a main body of the coding rule 6 is provided with three types of code channels which are composed of a plurality of rows of light-penetrating areas and non-light-penetrating areas, and the code channels comprise a thick code channel 7, a middle code channel 8 and a precise code channel 9. The utility model utilizes the coding rule which is provided with the absolute thick code channel, the middle code channel and the precise code channel, and when a reading head and the coding rule shift relatively, the state code of any position of relative shift is a single-value function; the utility model solves the problems of poor anti-interference ability, constant accumulation of interference errors, data loss after power failures, data irreparability after power recovery, etc. caused by changes through light-penetrating and non-light-penetrating 0 or 1 states in the background art. The utility model has the advantages of strong anti-interference ability and accurate positioning, and the data can not be lost after power recovery, and therefore, the utility model achieves measurement and positioning of absolute values in the whole range.
Description
Technical field: the utility model belongs to the line measurement technical field, relates to a kind of improvement of straight-line displacement being measured the grating digital readout chi.
Background technology: fields such as industry, scientific research, national defence so that daily life in, length amount and angle metric to measure activity be quotidian, in today of technical progress, the mode of measuring of these two geometric senses has had great changes, developed into digitized digital display appliance by simple scale measurer, as measurement of angle shaft-position encoder has been arranged, linear movement measuring has had the grating digital readout chi.The measurement digitizing of geometric sense has realized the automatic control of object space position and attitude; The application of numerically-controlled machine has improved labour productivity widely, and guarantees the quality of product; At poisonous, flue dust, wait the work under the severe environmental conditions no longer to go to do under water, but replaced by robot by the people.
Aspect measurement of angle, incremental shaft angular encoder and absolute type shaft-position encoder have been had.At straight line measuring face, using maximum at present is increment type grating digital readout chi.A large amount of increment type grating chis that use write down the extension position that the grating chi moves as 0 or 1 state variation of incremental encoder by logical light and obstructed light by the up-down counter circuit; When undesired signal, the error message of undesired signal 0 or 1 state variation is equally by counter bulk registration always.
The invention detailed content: the utility model will provide that a kind of antijamming capability is strong, the absolute type photoelectricity coded scale of accurate positioning, solve poor anti jamming capability in the background technology, add up disturbing mistake always; The loss of data of outage back send electric data problem such as can not recover again.
Physical construction of the present utility model is as shown in Figure 1: be made up of chi shell 1, the reading headstock 2, photelectric receiver 3, slit 4, light source 5, coded scale 6, the code channel of forming three kinds by several rows transparent zone territory and opaque zone territory on the body of coded scale 6 includes thick code channel 7, middle smart code channel 8, smart code channel 9 as shown in Figure 2, and preparation has the transparent zone 10 that different length requirement and different spacing require on thick code channel 7; Photelectric receiver 3 receives thick code channel 7 gamut scopes interior 2
nIndividual state code, wherein any one state code is a single-valued function; In smart code channel 8 be divided into N (N=1,2,3,4.......i) equally spaced section 11, the state code of smart code channel 8 arbitrary position in N section 11 was a single-valued function during photelectric receiver 3 received, and N section 11 be repeated arrangement as required, transparent zone 10, the N that preparation is equidistantly arranged in each section 11
iTransparent zone 10 length of individual section 11 are N
I-12 times of transparent zone 10 length of section 11; The transparent zone 10 of on smart code channel 9, make triangle or rectangle, equidistantly arranging.
Preparation has thick code channel 7, middle smart code channel 8 and smart code channel 9 on the body of coded scale 6 as shown in Figure 2.
Preparation has thick code channel 7 and smart code channel 9 on the body of coded scale 6 as shown in Figure 3.
Preparation has thick code channel 7 and middle smart code channel 8 on the body of coded scale 6 as shown in Figure 4.
Preparation has thick code channel 7 on the body of coded scale 6 as shown in Figure 5.
The utility model principle of work: when read head (comprising the reading headstock 2, photelectric receiver 3, slit 4, light source 5) when the coded scale length direction moves, the light that light source sends moves thereupon and shines on the coded scale, when the logical light part of rayed at coded scale, light will pass the transparent zone of coded scale and pass slit, is received by photelectric receiver and just has photocurrent output; When the opaque zone of rayed at coded scale, the obstructed light of coded scale and slit, photelectric receiver receive does not have photocurrent output; Several photelectric receivers photosignal of getting that reflects is formed several code status, photelectric receiver is when the scanning encoding chi, write down the state code of coded scale or photelectric receiver mobile displacement, the numerical value of output encoder chi displacement after processing of circuit, the state code of arbitrary position all belongs to single-valued function in the length range of coded scale.
The utility model adopts the thick code channel of absolute type, in the coded scale of smart code channel and smart code channel, when read head and coded scale relative displacement, arbitrary location status code of relative displacement is a single-valued function, solved 0 or 1 state variation of background technology by logical light and obstructed light, the poor anti jamming capability of bringing adds up disturbing mistake always; Outage back loss of data, again send electric data problem such as can not recover, the utility model will provide a kind of antijamming capability strong, accurate positioning, the absolute type photoelectricity coded scale that send electric data not lose after the outage again, so the utility model realizes that in gamut absolute value measures and locate.
Description of drawings:
Fig. 1 is a structure cut-open view of the present utility model
Fig. 2 is the structural drawing of first kind of coded scale in the utility model
Fig. 3 is the structural drawing of second kind of coded scale in the utility model
Fig. 4 is the structural drawing of the third coded scale in the utility model
Fig. 5 is the structural drawing of the 4th kind of coded scale in the utility model
Embodiment is shown in Fig. 1,2,3,4,5: the chi shell 1 and the reading headstock 2 adopt metal to make.Read head comprises the reading headstock 2, photelectric receiver 3, slit 4, light source 5, and photelectric receiver 3 is made up of several photodiodes or phototriode, and slit 4 adopts glass or metal material to make photelectric receiver 3 and slit 4 mutual corresponding placements.Light source 5 adopts several incandescent lamps or infraluminescence pipe.Coded scale 6 adopts glass material or metallic sheet material or optical plastic, preparation as above-mentioned rectangle transparent zone or triangle transparent zone on coded scale 6.Thick code channel 7 gamut scopes interior 2
nIndividual state code, the span of n are 3～25.
Embodiment 1: be to prepare promptly to be made up of thick code channel 7, middle smart code channel 8 and smart code channel 9 three code channels on the body of coded scale 6 as shown in Figure 2.
Embodiment 2: prepare on the body of coded scale 6 as shown in Figure 3 and promptly be made up of thick code channel 7 and smart code channel 9 two code channels.
Embodiment 3: prepare on the body of coded scale 6 as shown in Figure 4 and promptly be made up of thick code channel 7 and middle smart code channel 8 two code channels.
Embodiment 4: prepare on the body of coded scale 6 as shown in Figure 5 and promptly be made up of thick code channel 7 code channel.
Embodiment 5: preparation promptly is made up of smart code channel 8 in the thick code channel 7, two and smart code channel 9 four code channels on the body of coded scale 6.
The electronics subdivide technology: smart code channel is the benchmark code channel of accurately measuring, the delineation cycle of general source code is longer, obtain more tiny resolution (is 1 μ m or more hour as resolution), by the way of directly delineating, the number of winning the confidence will be had any problem, and influence travelling speed, therefore adopt the way of microcomputer software segmentation, can in long delineation scope, be subdivided into 8～2048 parts or higher.
The correction of error: because thick code channel 7, middle smart code channel 8 and smart code channel 9 have independently frame of reference respectively, there is the linking error between the three because of making, debug influencing of equal error, make the discontinuous error code that is called of reading, for making reading correct, correction link must be set, bearing calibration has two kinds: a kind of is the correction of A kind: adopt the negative correction logic when thick sign indicating number carry is leading, will measures correction in advance and fall; When thick sign indicating number carry lags behind, adopt the positive correction logic, hysteresis is filled.Another kind of is the correction of B kind: employing left and right sides correction method, make the tight linking of smart thick sign indicating number, and error code does not appear.
Weak signal to photelectric receiver 3 adopts amplification and shaping technique; Measuring error to complete machine adopts the software correction technique; Digital display technique and digital transmission technology are adopted in the data output of complete machine.The data output interface technology is divided into three kinds: the parallel sign indicating number output of A., the output of B. serial code, the serial/parallel output that combines of C..Basic code is adopted basic code zero clearing technology.
Claims (5)
1, absolute type photoelectricity coded scale comprises: by chi shell 1, the reading headstock 2, photelectric receiver 3, slit 4, light source 5, it is characterized in that also comprising coded scale 6, the code channel of on the body of coded scale 6, forming three kinds by several rows transparent zone territory and opaque zone territory, three class code channels on coded scale 6 bodies include thick code channel 7, middle smart code channel 8, smart code channel 9, and preparation has the transparent zone 10 of the requirement of the requirement of different length and different spacing on thick code channel 7; Photelectric receiver 3 receives thick code channel 7 gamut scopes interior 2
nIndividual state code, wherein any one state code is a single-valued function; In smart code channel 8 be divided into N (N=1,2,3,4......i) equally spaced section 11, the state code of smart code channel 8 arbitrary position in N section 11 was a single-valued function during photelectric receiver 3 received, and N section 11 be repeated arrangement as required, transparent zone 10, the N that preparation is equidistantly arranged in each section 11
iThe length of individual section transparent zone 10 is N
I-12 times of section transparent zone 10 length; The light hole 10 of on smart code channel 9, make triangle or rectangle, equidistantly arranging.
2, absolute type photoelectricity coded scale according to claim 1 is characterized in that: preparation has thick code channel 7, smart code channel 9 and smart code channel 8 in one or two on the body of coded scale 6.
3, absolute type photoelectricity coded scale according to claim 1 is characterized in that: preparation has thick code channel 7 and smart code channel 9 on the body of coded scale 6.
4, absolute type photoelectricity coded scale according to claim 1 is characterized in that: preparation has thick code channel 7 and middle smart code channel 8 on the body of coded scale 6.
5, absolute type photoelectricity coded scale according to claim 1 is characterized in that: preparation has thick code channel 7 on the body of coded scale 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02251060 CN2596322Y (en) | 2002-12-05 | 2002-12-05 | Absolute photoelectric encoding rule |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02251060 CN2596322Y (en) | 2002-12-05 | 2002-12-05 | Absolute photoelectric encoding rule |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2596322Y true CN2596322Y (en) | 2003-12-31 |
Family
ID=33721053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02251060 Expired - Fee Related CN2596322Y (en) | 2002-12-05 | 2002-12-05 | Absolute photoelectric encoding rule |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2596322Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1312457C (en) * | 2005-07-06 | 2007-04-25 | 北京交通大学 | Absolute position mark method for rail line |
| CN101408409B (en) * | 2008-11-07 | 2010-04-14 | 南通大学 | High precision digital type linear displacement transducer |
| CN101324420B (en) * | 2008-07-24 | 2010-06-02 | 上海交通大学 | Vortex lattice absolute location sensor with error average effect |
| CN102545912A (en) * | 2011-12-27 | 2012-07-04 | 温州奇玺电器科技有限公司 | Absolute value coder |
| CN103575312A (en) * | 2013-11-25 | 2014-02-12 | 济南飞越机电科技有限公司 | Jitter elimination method of incremental photoelectric encoder for photoelectric rotating table |
| CN103604448A (en) * | 2013-11-28 | 2014-02-26 | 中国航空工业集团公司沈阳空气动力研究院 | Absolute type encoder |
| CN104154884A (en) * | 2014-08-25 | 2014-11-19 | 长春华特光电技术有限公司 | Direct-reading type photoelectric collimation angular instrument with yardstick |
| CN110879075A (en) * | 2019-11-08 | 2020-03-13 | 杭州电子科技大学 | High-resolution incremental code channel detection method |
-
2002
- 2002-12-05 CN CN 02251060 patent/CN2596322Y/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1312457C (en) * | 2005-07-06 | 2007-04-25 | 北京交通大学 | Absolute position mark method for rail line |
| CN101324420B (en) * | 2008-07-24 | 2010-06-02 | 上海交通大学 | Vortex lattice absolute location sensor with error average effect |
| CN101408409B (en) * | 2008-11-07 | 2010-04-14 | 南通大学 | High precision digital type linear displacement transducer |
| CN102545912A (en) * | 2011-12-27 | 2012-07-04 | 温州奇玺电器科技有限公司 | Absolute value coder |
| CN103575312A (en) * | 2013-11-25 | 2014-02-12 | 济南飞越机电科技有限公司 | Jitter elimination method of incremental photoelectric encoder for photoelectric rotating table |
| CN103575312B (en) * | 2013-11-25 | 2015-12-09 | 济南飞越机电科技有限公司 | A kind of fluttering method that disappears of the incremental optical-electricity encoder for photoelectric turntable |
| CN103604448A (en) * | 2013-11-28 | 2014-02-26 | 中国航空工业集团公司沈阳空气动力研究院 | Absolute type encoder |
| CN103604448B (en) * | 2013-11-28 | 2016-05-04 | 中国航空工业集团公司沈阳空气动力研究所 | Absolute type encoder |
| CN104154884A (en) * | 2014-08-25 | 2014-11-19 | 长春华特光电技术有限公司 | Direct-reading type photoelectric collimation angular instrument with yardstick |
| CN110879075A (en) * | 2019-11-08 | 2020-03-13 | 杭州电子科技大学 | High-resolution incremental code channel detection method |
| CN110879075B (en) * | 2019-11-08 | 2021-06-22 | 杭州电子科技大学 | High-resolution incremental code channel detection method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103759749B (en) | Single-code-channel absolute position encoder | |
| CN102706373B (en) | Single-track absolute grating scale and image coding method thereof | |
| US4384204A (en) | Absolute encoder | |
| US4421980A (en) | Position encoder with closed-ring diode array | |
| CN108981761B (en) | Incremental rotary encoder | |
| CN103983290A (en) | Composite type absolute value encoder | |
| CN2596322Y (en) | Absolute photoelectric encoding rule | |
| CN202562500U (en) | Single-track absolute grating ruler | |
| CN106482764A (en) | Differential type photoelectric encoder and position judging method | |
| CN103411635B (en) | A kind of absolute grating ruler encodes grand micro-Combined Mining diversity method | |
| CN106767962A (en) | Differential type photoelectric encoder and position judging method | |
| CN111811562B (en) | Incremental photoelectric encoder fine and coarse correction method based on microcontroller | |
| CN102506718A (en) | Accurate displacement measurement device with real scales | |
| CN2771823Y (en) | Absolute angle coder | |
| EP3748284B1 (en) | Digital displacement sensor, and displacement measurement method for same | |
| CN202329553U (en) | Precise displacement measurement device with real scale | |
| JPS5822914A (en) | Zero point detecting device of photoelectric encoder | |
| US4468666A (en) | Apparatus for determining a reference position of a moving member | |
| CN210603203U (en) | Detection apparatus for power switch motion parameter | |
| CN218997872U (en) | Photoelectric encoder applied to knitting equipment | |
| CN102829808B (en) | Multi-circle code converter based on mechanical gear set circle count | |
| CN2909182Y (en) | Absolute position shaft-position encoder | |
| CN113639761B (en) | Two-dimensional translation and rotation displacement and speed synchronous non-contact measurement method using black-and-white grid pattern code | |
| CN2459715Y (en) | Counter reading out device for flow meter | |
| CN1074831C (en) | Method and device for real-time correction of working/measuring error by multiple grating |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Cao Zhenfu Document name: Notification of Termination of Patent Right |
|
| 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 |