前苏联专利SU955879A3 Measuring tape

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引用文献

法律状态

优先权

专利摘要:
A device for electronically indicating the measured distance between two points. A flexible tape retained in coiled fashion in a housing is extended therefrom between the two points to be measured. A Moire interference pattern is produced by movement of the tape having a first screen located thereon; the first screen moves below a second screen mounted in the housing. The Moire interference pattern is opto-electrically read and the length measured is digitally displayed.
公开号:SU955879A3
申请号:SU772539352
申请日:1977-10-14
公开日:1982-08-30
发明作者:А.Бергквист Ларс
申请人:За витель；
IPC主号:

专利说明:

(54) ROLLETTE
one
This invention relates to a measurement technique and is intended to measure linear dimensions.
The closest to the technical essence and the achieved effect to the proposed is a tape measure, comprising a body and installed therein ClJ tape relative to the body relative to the body;
The disadvantage of the tape measure is the low accuracy of the measurement, which is associated with a visual reading.
The purpose of the invention is to improve the measurement accuracy.
The goal is achieved by the fact that the tape measure, containing the body and the tape mounted therein with the possibility of movement relative to the body, is provided with a screen fixed on the tape with opaque strokes, separated by transparent intervals, a second screen.hardly fixed on the body and made with opaque strokes separated by transparent intervals or opaque light intervals, a radiation source and in series with a photodetector unit and a calculator unit with a recorder, and the source radiation and a light receiving unit mounted on the same or raz№le side of the screens.
In addition, the second screen of the roulette can be made of two parts, on each of which dark strokes are applied with a different pitch.
Figure 1 shows a tape measure, side view; figure 2 is the same, top view; FIG. 3 shows a second screen, an embodiment, an embodiment; 4 shows a second screen, another embodiment; Fig. 5 illustrates a scheme for converting light 1 apulosis into voltage pulses.
The tape measure includes a body 1, in which the tape 2 is mounted for movement relative to the body 1, wound on a reel 3, screen 4 fixed to tape 2 with opaque strokes separated by transparent intervals, a second screen 5 fixed on body 1 and made with opaque dark strokes separated by transparent intervals or opaque light intervals, radiation source 6, photo-receiving
block 7, consisting of phototransistors, connected in series with block 7, computing unit 8 with recorder 9. It is advisable that at the end sections of the measured distance be hook 10 attached to the front rim tape 2 and supporting hook 11 fixedly mounted on body 1 In some measurements, as shown in Fig. 1, the tongue 12 can be bent to a certain extent to a position parallel to the tape 2 on the opposite side of the housing 1. When the tongue 12 is bent, it enters a groove (not shown) in case 1 in position Marked in Figure 1 in broken lines, when the measuring tongue 12 is bent, the measurement is carried out inter- hook 10 on the belt 2 and the hook 13 at the outer end of the measuring tab 12,
Tape 2 and measuring tongue 1 are made of steel material used in conventional tape gauges.
Case 1 is preferably made of steel: or durable plastic material.
Depending on the design of screens 4 and 5, you can create different types of moire paintings.
The opaque strokes 14 relative to the screen 3 are mainly located perpendicular to the longitudinal direction of the tape 2, and the opaque strokes 4 relative to the screen 5 are parallel to the opaque strokes 14 of the screen 4.
Screens 4 and 5 are designed in such a way that screen 4 has a division, i.e. the number of opaque strokes 14 per unit length perpendicular to the strokes 14, which differs from dividing the screen 5.
The opaque strokes 14 on the two screens 4 and 5 have the same width, and the width of the light or transparent intervals on the screen 4 differs from the width on the screen 5. However, according to a modified embodiment of the proposed roulette, the width of the opaque strokes 14 as well as the width of the light or transparent spacing on screen 4 Different from the width on screen 5, blown by the corresponding implementation of screens 4 and 5, as indicated above, when you move screen 5, an interference pattern is obtained, which consists of wide dark bands 15.
The direction of movement of the wide lanes 15 depends on which of the two screens 4 and 5 has the most frequent division.
FIG. 3 shows, as an example, an embodiment in which screen 5 has a more frequent division, i.e. a larger number of opaque strokes 14 per unit of length perpendicular to the strokes 14 than screen 4. As a result, wide strips 5 move in the direction indicated by arrow 16 while the tape 12 is drawn in in the direction indicated by arrow 17.
When screens 4 and 5 have different divisions, the wide strips 15 will move a distance greater than the distance traveled by the tape 2. This results in a relationship between the distance the tape 2 moves and the distance that move wide lanes 15.
Thus, the resulting ratio depends on the differences between the steps of strokes 4 and 5 to obtain a large ratio, i.e. a large number of wide bands 15 passing through a point on the second screen 5 with some movement of the tape 2, the difference between the stroke of the bars of screens 4 and 5 should be insignificant.
In another embodiment, the screen 5 consists of two parts 18 n 19 with different pitch of strokes, where the strip 20 between parts 18 and 19 is perpendicular to the opaque strokes
14 and is located symmetrically (.Fig.4).
One of the two parts 18 and 19 has strokes applied in increments less than that of screen 4, and the second has strokes in increments greater than those of screen 4, If, for example, part 18 of screen 5 (FIG. 3) has a step between strokes less, and the second more than the screen 4, the wide bands
15 in part 18 of screen 5 moves in the direction indicated by arrow 21, and in part 19 of screen 5 in the direction indicated by arrow 22 when moving tape 2 indicated by arrow 23. The dividing line of the two parts 18 and 19 of screen 5 may have different ratios by dividing the screen 4, in which case the wide lanes 15 will move with greater speed on one of the two parts 18 and 19 of the screen 5.

权利要求:
Claims (2)
[1]
It was noted above that it is advisable that the screen 4 consists of opaque strokes separated by light, preferably white, intervals. However, the tape 2 may be made of a transparent material, and in this case, the screen 4 consists of opaque strokes, separated by transparent intervals. In this case, the gauge measurement source b and the photodetector unit 7 are located on the same side of the screens and 5 in this way, that the light coming from the sources passes through screens 4 and 5 and then goes to unit 7. This last mentioned embodiment refers to both cases, when screen 5 consists of one part and when it consists of two parts 18 and 1. Roulette works as follows. When the tape 2 is pulled out of the case 1 to measure the distance and the screen 4 moves perpendicular to the opaque strokes on the screen 5, then. when the Sleep 4 screen is superimposed on the screen 5, an interfering pattern occurs (Fig. 3). According to a preferred embodiment, the radiation source 6 and the phototransistors of the unit 7 are located on the side of the screen that faces away from the screen. If the screen 5 consists of one part, one radiation source and one phototransist are used. When measuring and recording the interference pattern, the source 6 illuminates the screen 5. At the same time, light is reflected from screen 4 and then passes through screen 5 to the phototransistor of unit 7. Consequently, when the tape 2 is pulled out of housing 1, several moving dark strips 15 cause the light emitted by the radiation source 6, enter the photo transistor of the unit 7 in the form of pulsating light. The phototransistor unit 7 converts these light pulses into electrical pulses, which are amplified and processed in a computing unit 8 designed for this purpose. When the screens 4 and 5 are located in such a way that a large ratio of the above-mentioned type is obtained, one can obtain from the phototransistor of the unit 7 with a relatively small movement of the tape 2 a large number of electrical pulses. The output signal consisting of pulses is removed from the poles 24 of the block 8. When it is necessary to measure, the switch 25 is moved to a position in which the block 8 connected to the tape measure can be energized from the battery. After that, the tape 2 is pulled out the desired length, so that the hook 10 on the tape 2 and the supporting hook 11 on the housing 1 correspond to the measured lengths. At the time when the tape 2 is extended to the phototransistors of the unit 7, a series of light pulses arrives, which is transformed into electrical pulses, readable computing 796bloko 8. Computing unit 8 converts, in a known manner, a series of pulses into digital form and controls the recorder 9, by which the distance between the two hooks 10 and 11 is depicted as numbers. In Figure 2, a distance of 1243.56 mm is shown as an example. Computing unit 8 in the preferred embodiment is designed in such a way that it receives the pressure of various pulsating electrical voltages from two phototransistors of unit 7 and can be used for phase comparison. It is advisable to dispense a computing device that operates continuously, so that the recorder 9 shows the numbers indicating the distance between hooks 10 and 11. After the measurement is completed, the tape 2 is wound on reel 3 in case 1 and the switch 25 shifting) T to the open position. In some types of measuring the distance between the hook 10 of the tape 2 and the hook 13, the measuring tongue 12 is folded over. Thus, a tape measure with a screen fixed on it, made with a given step of dark strokes and with an integrated computing unit with a digital recorder, allows a significant increase in the accuracy of measurements of linear dimensions. . Claim 1. A roulette comprising a body and a tape mounted therein that is movable relative to the body, characterized in that, in order to improve the measurement accuracy, it is provided with a screen mounted on a tape with opaque strokes separated by transparent intervals, a second screen fixedly fixed on the case and made with opaque dark strokes separated by transparent intervals or opaque light intervals, a radiation source and connected in series with a photo receiving receptacle The eye and the computing unit with petTiCTpaTopoM, and the photodetector unit and the radiation source are installed on one or on different sides of the screens.
[2]
2. Roulette according to claim 1, characterized in that the second screen is made of two parts, on each of which dark strokes are applied with a different step. Sources of information taken into account in the examination 1. PI Izmailov. Workshop on geodesy. M., Nedra, 1970, p. 24 (prototype).

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同族专利:

公开号 | 公开日

FI773046A|1978-04-16|

CA1099912A|1981-04-28|

ES463534A1|1978-07-01|

DK456877A|1978-04-16|

SE400642B|1978-04-03|

NO146001B|1982-03-29|

FR2368011B1|1983-09-09|

FR2368011A1|1978-05-12|

US4164816A|1979-08-21|

GB1571245A|1980-07-09|

NO773527L|1978-04-18|

NO146001C|1982-07-21|

JPS5383653A|1978-07-24|

DE2746368A1|1978-04-20|

引用文献:

公开号 | 申请日 | 公开日 | 申请人 | 专利标题

CA719410A|1965-10-12|T. Shepherd Alexander|Measuring apparatus|

GB693092A|1951-11-26|1953-06-24|Ture Anders Ljungberg|Steel measuring tape|

US2886717A|1953-03-14|1959-05-12|Ferranti Ltd|Measuring apparatus|

US2948890A|1956-04-26|1960-08-09|Dell Brothers O|Position meter|

GB932481A|1959-05-13|1963-07-31|John Guild|Improvements in metrology apparatus incorporating optical gratings|

GB971504A|1960-02-05|1964-09-30|Emi Ltd|Improvements relating to displacement measuring apparatus employing diffraction gratings|

CH430236A|1965-02-02|1967-02-15|Blattner Karl|Method for measuring lengths or angles according to the stack principle and device for carrying out this method|

DE1798091A1|1968-08-21|1971-09-09|Siemens Ag|Reading device for a tape measure|

DE1941731C2|1969-08-16|1973-11-15|Fa. Carl Zeiss, 7920 Heidenheim|Device for measuring changes in position between two relatively movable parts|

US3658429A|1970-05-11|1972-04-25|Bendix Corp|Displacement measuring apparatus|

US3780440A|1971-07-21|1973-12-25|Ideal Aerosmith Inc|Measuring instrument|

US3816002A|1972-10-10|1974-06-11|H Wieg|Apparatus for measuring displacement between two relatively movable members|

US4031360A|1975-11-17|1977-06-21|The Raymond Lee Organization, Inc.|Electronic read out tape measure|US4161781A|1977-11-25|1979-07-17|The Stanley Works|Digital tape rule|

DE3038716C2|1980-10-14|1985-12-12|Dr. Johannes Heidenhain Gmbh, 8225 Traunreut|Position measuring device|

CA1176456A|1981-06-25|1984-10-23|Walter K. Mansel-James|Tape measure|

US4551847A|1983-04-08|1985-11-05|Caldwell W Kenneth|Hand held digital measuring device|

DE3326137C2|1983-07-20|1994-01-20|Bayerische Masindustrie Arno K|Tape measure|

FR2554918B1|1983-11-10|1988-07-29|Jaluzot Yves|METHOD AND DEVICE FOR OBTAINING NUMERICAL COORDINATES OF A POINT OR A SET OF POINTS|

GB2172576A|1984-12-18|1986-09-24|Rabone Chesterman Ltd|Measuring tape housing|

JPH0426405B2|1985-01-18|1992-05-07|Kyoto Measuring Instr Corp|

US4575944A|1985-06-19|1986-03-18|Patrick Lin|Electronic digital tape-rule|

WO1989009379A1|1986-07-08|1989-10-05|Peter Sing|Apparatus for photoelectrically generated physical measurements|

EP0274509B1|1986-07-19|1993-06-23|CARE, Ronald James|Linear measuring devices|

GB2194042A|1986-08-14|1988-02-24|Bicc Plc|Displacement measurement|

DE3715908C2|1987-05-13|1990-08-23|Messerschmitt-Boelkow-Blohm Gmbh, 8012 Ottobrunn, De|

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US5060394A|1989-04-20|1991-10-29|Homestar International Inc.|Measuring apparatus with readout display|

US5142793A|1989-06-02|1992-09-01|Contek Corporation|Digital linear measuring device|

US5027526A|1989-06-02|1991-07-02|Crane R Stephen|Digital linear measuring device|

US5414943A|1993-11-12|1995-05-16|Vogt; Katie|Anatomical measuring tape with indicator|

US5691923A|1995-04-25|1997-11-25|Levi Strauss & Co.|Digital measuring system|

US6276069B1|1999-03-01|2001-08-21|Jockey International, Inc.|Brassiere sizer|

DE10312045B4|2003-03-18|2014-07-31|Anton Rodi|Measuring system for absolute value recording of angles and paths|

US6962002B2|2004-01-20|2005-11-08|Olympia Group, Inc.|Multi-tape measuring tool|

DE202005011814U1|2005-07-25|2006-08-31|Hoechstmass Balzer Gmbh|Electronic tape measure and this comprehensive length measuring device|

CN100462665C|2006-06-07|2009-02-18|宁波长城精工实业有限公司|Electric band tape|

US20080072446A1|2006-09-26|2008-03-27|A Te Hu|Tape measure having digital output|

US9080849B2|2011-07-29|2015-07-14|Milwaukee Electric Tool Corporation|Tape measure|

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法律状态:

优先权:

申请号 | 申请日 | 专利标题

SE7611512A|SE400642B|1976-10-15|1976-10-15|ELECTRONIC CARPET TAPE|

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