EP0939380A1 - Ausleseeinrichtung für ein Rollenzählwerk - Google Patents
Ausleseeinrichtung für ein Rollenzählwerk Download PDFInfo
- Publication number
- EP0939380A1 EP0939380A1 EP99103137A EP99103137A EP0939380A1 EP 0939380 A1 EP0939380 A1 EP 0939380A1 EP 99103137 A EP99103137 A EP 99103137A EP 99103137 A EP99103137 A EP 99103137A EP 0939380 A1 EP0939380 A1 EP 0939380A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- light
- roll
- roller
- rollers
- light barriers
- 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.)
- Granted
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06M—COUNTING MECHANISMS; COUNTING OF OBJECTS NOT OTHERWISE PROVIDED FOR
- G06M1/00—Design features of general application
- G06M1/27—Design features of general application for representing the result of count in the form of electric signals, e.g. by sensing markings on the counter drum
- G06M1/272—Design features of general application for representing the result of count in the form of electric signals, e.g. by sensing markings on the counter drum using photoelectric means
Definitions
- the present invention relates to a device for Reading the position of number rolls of a roll counter with shift pinions on an axis within the circumference of the Number rolls, by means of which the low-order Number roll at the end of a full turn the higher order Number roll rotates by one digit or a division of a scale,
- Different types of measuring devices are known, in which the measured size with a mechanical roller counter is summed up and displayed.
- Volumetric instruments for gas and water or mechanical Electricity meter in which the measured volume respectively the measured energy with a device adapted mechanical reduction on a roller counter is transmitted.
- the roller counter shows the since last zero position or the one since commissioning measured amount of. To determine consumption during The status of the roll counter becomes a certain period read at the beginning and end of this period.
- a widespread version for the roller counter consists of an axis on which the number rollers can be rotated and the numbers 0 to 9 are applied to their scope are, as well as from a second, outside the number roles lying axis with shifting pinions rotatable thereon, that the least significant number roll in the last tenth one revolution using indexing teeth over the assigned one Shift pinion the next higher role by one Tenths of a revolution.
- the switching pinions an axis attached within the circumference of the number rollers.
- Such a roll counter is e.g. known from US 4,031,386.
- the present invention is based on the task Basically, a readout device for a roller counter with mounted on an axis within the number rollers To create shift pinions, which with simple means a high resolution when scanning a counter roller position and which are independent of the drive of the roller counter works and does not influence it in any way.
- the reading device is characterized by this from that the display status of a mechanical roller counter with internal shift pinions by means of radially arranged Non-contact and load-free photoelectric sensors, read out becomes.
- the number rolls have translucent and opaque code segments, by means of which together with the light barriers information regarding the position of the individual number roles can be determined.
- the light barriers are arranged radially on a semicircle and consist of an internal central for each number roll arranged optoelectronic element and several peripherally semicircular elements.
- the internal can be central arranged opto-element for example with a star-shaped Multiple prism surrounded.
- the peripheral elements are as glass-like light guides trained and serve as an optical signal conductor between the Roll counter and - via further optoelectronic elements - the signal inputs of a microprocessor.
- the gray code is used for the readout position. With the Gray code will only move from one position to another changed a single bit of binary information.
- FIG. 1 shows a carrier drum 11 on which seen right to left, a first number roll 21 and another five number rollers 25 are rotatably applied.
- the first number roll 21 the second, fourth and sixth number rolls 25 on average and the third and fifth number roll 25 shown in the external view.
- On an outer transparent body 24 or 27 of the Number rollers 21, 25 are numerals 28 of 0 on the peripheral surface applied to 9.
- the first number roller 21 has one inner non-transparent body 23 and the others Number rolls 25 each have an inner, non-transparent one Body 26 on.
- At 29 and 30 are translucent or opaque code segments indicated.
- At 22 she is Internal teeth of the first number roller 21 designated.
- the Carrier drum 11 is with a right mounting axis 12th and with a left mounting axis 13 in one counter housing shown attached.
- the inner optocouple unit 41 will be in a next one Illustration (Fig.2) explained in more detail.
- the inner one Optocouple unit 41 further comprises a printed circuit 42, on which the number rollers 21, 25 per Number roll a semiconductor optocouple 43 and an optical Multiple prism 44 is applied.
- an outer printed circuit 51 which five semiconductor opto elements 52, five arranged one behind the other Optical fibers 53 to 57 and a microprocessor 58.
- This circuit is via electrical connections 59 to Example wires, with the inner optocouple unit 41 connected.
- the semiconductor optic elements 52 can be used as Light receiver and the inner opto-element units 41 each by means of a semiconductor opto element 43 as a light emitter (LED).
- LED light emitter
- FIG. 2 shows a view into the interior of a number roll 25 in the axial direction with the associated outer Elements and other, not fully visible in Fig. 1, Details.
- the printed one Circuit 42 a semiconductor opto element 43 in the form of a LED, which serves as a light emitter and which when Reading the number roll 21, 25 is activated briefly.
- the Semiconductor opto element 43 is in the center of the optical Multiple prism 44 arranged.
- the star-shaped multiple prism 44 has a serrated outer contour, for example four designed as a prism with internal double reflection Teeth. The purpose of this multiple prism 44 is the light of the semiconductor opto element 43 into individual Split and focus light rays.
- the Translucency of a code segment 29 is advantageous limited to light with a defined wavelength.
- Such Light can be light invisible to the eye, for example Be infrared light. Focused light rays hit the Reading process in the area of translucent code segments 29 on, with the multiple prism 44 in the same division arranged, light guide 53 to 57.
- the number roll 21 or 25 are the light rays for the Light guides 57, 55 and 56 through opaque Code segments 30 interrupted and for the light guides 53 and 54 visible through the translucent code segment 29.
- the visible light rays are transmitted through the light guides 53, 54 about internal reflection at the angled point assigned optical trained as a light receiver Semiconductor element 52 supplied.
- This number roll 21 or 25 will be over one, later described, evaluation formed a five-digit binary number. If a light transmission is logical "1" and a light block Defined as logical "0", this results in the readout moment the five-digit binary number 00110.
- FIG. 3 shows the basic circuit diagram of the optoelectronic Elements (light emitters) 43 and 52 (light receiver) with the Microprocessor 58, as well as the light-guiding elements Learnfaprisma 44 and light guide 53 to 57.
- the Dash-dotted lines are the light or data paths shown.
- Each individual light or data path can be in the Design according to the invention as a one-way light barrier be designated.
- the one shown in this example Accordingly, with six number rolls, the facility comprises 21 25 and five optical scanning points per number roll 21, 25 thirty one-way light barriers.
- the number roll 21, 25 five Reading points are within a semicircle regular division arranged.
- the pitch angle is in the example shown 36 °, but can also have other values, or have a multiple of 36 °. As well the division could also be irregular.
- FIG. 7 shows a three-dimensional representation of the Reading device according to the invention for a roller counter. It can be seen here that each of the five optical Scanning positions of each individual number roll 21, 25 over the Light guides 53 to 57 to one, each scan position assigned, light receiver 52 leads.
- Solid light is shone through one or more of the Light guides 53-57 to one or more light receivers 52 headed.
- a receiver 52 generates at the corresponding input a logic "1" of the microprocessor 58 when light is received.
- the position of each individual becomes a readout sequence Number roll 21, 25 with a five-digit binary information in Gray code shown.
- the readout resolution per number roll 21, 25 is not limited to the division of ten shown. With the device according to the invention, a Number roll 21, 25 thirty different positions logically To be defined. With corresponding effort in terms of number Photoelectric sensors and code segments 29, 30 can, if required, even greater readout resolution achieved become.
- the five light barriers per shown as an example Number roll 21, 25 result in a full rotation of 360 ° thirty different codes as a binary number.
- an optical receiver 43 photo transistor attached over which the multiple prism 44 is located, the latter being radially through the number roller 21, 25 in five defined directions of light falling on the optical receiver 43 conducts and the five defined radial directions of incidence between two directions one each Include an angle of 36 °.
- the number rollers 21, 25 are there advantageously designed so that the width of the number rolls on the right-hand side, where within the number roll 21, 25 the internal toothing 33 for driving the number rollers 21, 25 through the switching pinion 31, the numbers 28 outside from 0 to 9 are applied, and that is on the left Page next to the numbers 28 the six permeable respectively opaque code segments 29, 30 are located with a impervious segment in the area where the two Teeth 32 for advancing the shift pinion 31 after one full rotation of the number roller 21, 25 are.
- the other advantageous embodiment of the shown in the drawings Invention has, as taken from the figure descriptions can be within the number roles per number role Light-emitting element 43 and outside the number rollers 21, 25 a total of five optical receivers 52 on the peripheral printed circuit 51.
- the number rollers 21, 25 can be in two operations manufactured plastic injection molded part to be formed in which is the inner part of one for the light used impermeable material (e.g. black colored Plastic) is made where the inner part of the Gears 32, 33 and the guide for centering on the Carrier drum 11 includes, and which on the left in 3 segments is divided, which together with their Spaces between the six code segments 29 described above, 30 form, and from one for the light used transparent material, from which an outer ring is injected, for example from white unfilled plastic when using infrared light elements.
- Numbers 28 on the number rollers 21, 25 can be printed on or hot stamping are applied to the outer circumference, whereby care should be taken that the numbers 28 the code segments 29, 30 do not cover.
- the light guide elements 53-57 can in a known manner as transparent elements with total reflection surfaces or with outer mirror reflection surfaces.
- An advantageous variant for those outside the number rolls 21, 25 located optical elements includes a printed Circuit 51, on which in addition to five opto-elements 52 for the Generation of the five signals per number roll 21, 25 also one Microprocessor 58 with the necessary additional elements for the Control and evaluation of the optoelectronic elements and the connections for a data transmission interface is applied.
- Five plastic light guides 35-57 with one the number corresponding to the number rolls 21, 25 Light guide arms receive the light from all number rolls 21, 25 on an optocouple 43 in the variant where the outer optocouples 52 receivers, for example Photo transistors are, or distribute the light all six number rollers 21, 25, where the outer opto-elements Emitters, for example light emitting diodes, are.
- the five Optocouples 52 on the outer printed circuit 51 and the five plastic light guides 53-57 are designed in such a way that the light received or emitted by them each in the area of code segments 29, 30 on the axis of rotation the number roller 21, 25 is directed and the five directions include an angle of 36 °.
- the five one-way light barriers give the following 30 codes as a binary number with one full rotation of a number roller 21, 25 by 360 °: Angle of rotation Displayed number Code (as a binary number) 0 ° 0 0 0 1 1 0 12 ° 0 0 0 1 1 1 24 ° 0 1 0 1 1 1 1 36 ° 1 1 0 0 1 1 48 ° 1 0 0 0 1 1 60 ° 1 0 1 0 1 1 72 ° 2nd 0 1 0 0 1 84 ° 2nd 0 0 0 0 1 96 ° 2nd 0 0 1 0 1 108 ° 3rd 0 0 1 0 0 120 ° 3rd 0 0 0 0 0 132 ° 3rd 0 0 0 1 0 144 ° 4th 1 0 0 1 0 0 168 ° 4th 1 0 0 0 1 180 ° 3rd 0 0 0
- the light guide elements 53-57 can in a known manner as transparent elements with total reflection surfaces or with outer mirror reflection surfaces.
- Material is preferably a suitable plastic used.
- the code segments 29, 30 for the number rolls 21, 25 see above disposes that at the counter position "0 0 0 0 0 0" all Have light barriers so that the Gain of the light barriers can be measured.
- a processor is preferably used as the microprocessor 58 which uses the light-emitting optocouples 43 or 52 with sufficient current, e.g. 5 mA per element, can directly control, and which an analog-digital converter with several switchable inputs, with which the Microprocessor the resistance of the light receiver 52, and thus can measure the luminosity.
- the microprocessor additionally measures the current in each of the light emitting elements when it this turns on. This can result in a defect in an element recognized and thus the functional reliability can be improved.
- the outer Light guides 53-57 one arm more than the number of Number rolls of the counter and includes the inner one Opto-element unit 43 one element more than the number of Number rollers 21, 25 of the counter is. So that the Microprocessor 58 the function of the outer optocouples check and so the functional safety additionally improve. In order to shield and avoid Diffuse light that interferes with function can occur between the inner ones adjacent optocouples 41 additional, not shown Light shields can be attached.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
Description
Drehwinkel | Angezeigte Ziffer | Code (als Binärzahl) |
0° | 0 | 0 0 1 1 0 |
12° | 0 | 0 0 1 1 1 |
24° | 0 | 1 0 1 1 1 |
36° | 1 | 1 0 0 1 1 |
48° | 1 | 0 0 0 1 1 |
60° | 1 | 0 1 0 1 1 |
72° | 2 | 0 1 0 0 1 |
84° | 2 | 0 0 0 0 1 |
96° | 2 | 0 0 1 0 1 |
108° | 3 | 0 0 1 0 0 |
120° | 3 | 0 0 0 0 0 |
132° | 3 | 0 0 0 1 0 |
144° | 4 | 1 0 0 1 0 |
156° | 4 | 1 0 0 0 0 |
168° | 4 | 1 0 0 0 1 |
180° | 5 | 1 1 0 0 1 |
192° | 5 | 1 1 0 0 0 |
204° | 5 | 0 1 0 0 0 |
216° | 6 | 0 1 1 0 0 |
228° | 6 | 1 1 1 0 0 |
240° | 6 | 1 0 1 0 0 |
252° | 7 | 1 0 1 1 0 |
264° | 7 | 1 1 1 1 0 |
276° | 7 | 1 1 0 1 0 |
288° | 8 | 1 1 0 1 1 |
300° | 8 | 1 1 1 1 1 |
312° | 8 | 1 1 1 0 1 |
324° | 9 | 0 1 1 0 1 |
336° | 9 | 0 1 1 1 1 |
348° | 9 | 0 1 1 1 0 |
360°/0° | 0 | 0 0 1 1 0 |
Claims (9)
- Einrichtung zum Auslesen der Stellung von Zahlenrollen (21, 25) eines Rollenzählwerkes mit Schaltritzeln (31) auf einer Achse innerhalb des Umfangs der Zahlenrollen (21, 25), mittels welchen jeweils die niederwertige Zahlenrolle (21, 25) am Ende einer vollen Umdrehung die höherwertige Zahlenrolle (25) um eine Ziffer oder einen Skalenteil weiter dreht,
dadurch gekennzeichnet,
dass die Einrichtung für eine berührungslose und belastungsfreie Auslesung der Stellung von Zahlenrollen (21, 25) radial angeordnete Lichtschranken aufweist. - Einrichtung nach Anspruch 1,
dadurch gekennzeichnet,
dass pro Zahlenrolle (21, 25) mehrere Lichtschranken, bestehend aus einem Lichtemitter (43) mit mehreren Empfängern (52), oder aus mehreren Lichtemittern (43) und einem Empfänger (52). - Einrichtung nach Anspruch 1,
dadurch gekennzeichnet,
dass die Zahlenrollen (21, 25) zwecks Ermittlung der Stellung mittels den Lichtschranken mindestens ein lichtdurchlässiges (29) und mindestens ein lichtundurchlässiges (30) Codesegment aufweisen. - Einrichtung nach Anspruch 3,
dadurch gekennzeichnet,
dass sich die Codesegmente 29, 30 über verschieden grosse Winkel erstrecken. - Einrichtung nach Anspruch 1,
dadurch gekennzeichnet,
dass auf einem Halbkreis radial angeordnete Lichtschranken aus einem zentral in jeder Zahlenrolle (21, 25) vorhandenen optoelektronischen Element (41), mehreren peripher halbkreisförmig angeordneten Lichtleitern (53-57) und mehreren auf einer gedruckten Schaltung (51) angeordneten optoelektronischen Elementen (52) bestehen. - Einrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
dass das zentral in den Zahlenrollen (21,25) vorhandene optoelektronische Element (41) von einem das Licht fokussierenden und den peripheren Elementen zuordnenden Vielfachprisma (44) umgeben ist. - Einrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
dass die peripheren Elemente der Lichtschranken als optische Signalleiter zwischen Lichtquelle und Empfänger in der Form von glasartigen Lichtleitern (53-57) vorhanden sind. - Einrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
dass eine winkelgeometrische Anordnung der lichtdurchlässigen (29) und lichtundurchlässigen Codesegmente (30) pro Zahlenrolle (21, 25) vorhanden ist, welche ein Auslesen von mehr als zehn verschiedenen Stellungen während einer vollen Umdrehung einer Zahlenrolle (21, 25) möglich macht. - Einrichtung nach Anspruch 7,
dadurch gekennzeichnet,
dass die Lichtschranken und die Codesegmente (29, 30) eine einen Gray-Code erzeugende Anordnung aufweisen.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP19990103137 EP0939380B1 (de) | 1998-02-27 | 1999-02-18 | Ausleseeinrichtung für ein Rollenzählwerk |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP98810161 | 1998-02-27 | ||
EP98810161 | 1998-02-27 | ||
EP19990103137 EP0939380B1 (de) | 1998-02-27 | 1999-02-18 | Ausleseeinrichtung für ein Rollenzählwerk |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0939380A1 true EP0939380A1 (de) | 1999-09-01 |
EP0939380B1 EP0939380B1 (de) | 2008-03-26 |
Family
ID=26151878
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19990103137 Expired - Lifetime EP0939380B1 (de) | 1998-02-27 | 1999-02-18 | Ausleseeinrichtung für ein Rollenzählwerk |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP0939380B1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102706374A (zh) * | 2012-06-12 | 2012-10-03 | 深圳天行健电子有限公司 | 圆盘光电编码测角读数装置 |
CN103471640A (zh) * | 2013-09-06 | 2013-12-25 | 刁宇浩 | 智能计量仪表的数码直读器 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009003976A1 (de) | 2009-01-07 | 2010-07-08 | Hengstler Gmbh | Vorrichtung zur optischen Abtastung der Teilstriche eines mechanischen Rollenzählwerkes |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1410912A (en) * | 1971-09-08 | 1975-10-22 | Counting Instr Ltd | Meter reading systems |
EP0325565A1 (de) * | 1988-01-18 | 1989-07-26 | FABBRICHE RIUNITE MISURATORI SACOFGAS S.p.A | Sensoreinrichtung |
EP0344931A2 (de) * | 1988-05-28 | 1989-12-06 | Smith Meters Limited | Zähler |
EP0435763A1 (de) * | 1989-12-27 | 1991-07-03 | Societe D'applications Generales D'electricite Et De Mecanique Sagem | Rechnungsaufbereitungsgerät |
EP0660263A1 (de) * | 1993-12-23 | 1995-06-28 | GWF Gas- & Wassermesserfabrik AG | Mehrstelliges Rollenzählwerk für ein Volumenmessgerät |
-
1999
- 1999-02-18 EP EP19990103137 patent/EP0939380B1/de not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1410912A (en) * | 1971-09-08 | 1975-10-22 | Counting Instr Ltd | Meter reading systems |
EP0325565A1 (de) * | 1988-01-18 | 1989-07-26 | FABBRICHE RIUNITE MISURATORI SACOFGAS S.p.A | Sensoreinrichtung |
EP0344931A2 (de) * | 1988-05-28 | 1989-12-06 | Smith Meters Limited | Zähler |
EP0435763A1 (de) * | 1989-12-27 | 1991-07-03 | Societe D'applications Generales D'electricite Et De Mecanique Sagem | Rechnungsaufbereitungsgerät |
EP0660263A1 (de) * | 1993-12-23 | 1995-06-28 | GWF Gas- & Wassermesserfabrik AG | Mehrstelliges Rollenzählwerk für ein Volumenmessgerät |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102706374A (zh) * | 2012-06-12 | 2012-10-03 | 深圳天行健电子有限公司 | 圆盘光电编码测角读数装置 |
CN102706374B (zh) * | 2012-06-12 | 2015-05-27 | 深圳天行健电子有限公司 | 圆盘光电编码测角读数装置 |
CN103471640A (zh) * | 2013-09-06 | 2013-12-25 | 刁宇浩 | 智能计量仪表的数码直读器 |
Also Published As
Publication number | Publication date |
---|---|
EP0939380B1 (de) | 2008-03-26 |
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