WO1993001501A1 - A sensor for optical detection of the movable part of a consumption meter for visual indication of the consumption - Google Patents
A sensor for optical detection of the movable part of a consumption meter for visual indication of the consumption Download PDFInfo
- Publication number
- WO1993001501A1 WO1993001501A1 PCT/DK1992/000221 DK9200221W WO9301501A1 WO 1993001501 A1 WO1993001501 A1 WO 1993001501A1 DK 9200221 W DK9200221 W DK 9200221W WO 9301501 A1 WO9301501 A1 WO 9301501A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sensor
- consumption
- aiming
- meter
- plane
- Prior art date
Links
- 230000000007 visual effect Effects 0.000 title claims abstract description 11
- 238000001514 detection method Methods 0.000 title claims abstract description 8
- 230000003287 optical effect Effects 0.000 title claims abstract description 8
- 230000005611 electricity Effects 0.000 abstract description 14
- 239000011521 glass Substances 0.000 description 9
- 230000002093 peripheral effect Effects 0.000 description 5
- 230000035945 sensitivity Effects 0.000 description 4
- 230000000873 masking effect Effects 0.000 description 2
- 101100400378 Mus musculus Marveld2 gene Proteins 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06M—COUNTING MECHANISMS; COUNTING OF OBJECTS NOT OTHERWISE PROVIDED FOR
- G06M1/00—Design features of general application
- G06M1/08—Design features of general application for actuating the drive
- G06M1/10—Design features of general application for actuating the drive by electric or magnetic means
- G06M1/101—Design features of general application for actuating the drive by electric or magnetic means by electro-optical means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
- G01R11/02—Constructional details
- G01R11/16—Adaptations of counters to electricity meters
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06M—COUNTING MECHANISMS; COUNTING OF OBJECTS NOT OTHERWISE PROVIDED FOR
- G06M3/00—Counters with additional facilities
Definitions
- the invention concerns a sensor for optical detection of the movable parts of a consumption meter for visual indi ⁇ cation of the consumption and comprising aiming means assisting the mounting of the sensor on the consumption meter.
- Electricity, water or gas meters traditionally have a mechanical counter for indication of accumulated consump ⁇ tion and moreover often a disc or a pointer rotating at a rate which is proportional to the size of the instan ⁇ taneous consumption.
- These movable parts, which indicate consumption, are visible from the outside and can be ob ⁇ served through a transparent plate of glass or the like, which forms part of the meter casing protecting against unauthorized manipulation with the meter.
- the known sensors have optically detecting elements and are adapted for external mounting on the meter in a manner such that the optically detecting elements "see” the consumption indicating parts of the meter, and when these parts move passed the "visual field" of the detecting parts, signals indicating such passage are formed on the electric output of these parts.
- This output signal can be applied to an electronic computing circuit which e.g. converts the re ⁇ ceived signals to accumulated consumption, performs sta ⁇ tistical calculations such as the distribution of the consumption over various periods of time, metered consump- tion converted to costs, ect.
- an electronic computing circuit which e.g. converts the re ⁇ ceived signals to accumulated consumption, performs sta ⁇ tistical calculations such as the distribution of the consumption over various periods of time, metered consump- tion converted to costs, ect.
- Such sensors allow external optical detection of the movable parts of a consumption meter without unauthorized manipulation with the meter.
- GB 2 179 399 describes a sensor of the present type, and where the aiming means are formed by an edge on a plate.
- Consumption meters frequently have a metal casing, and their consumption indicating, rotating disc is thus posi ⁇ tioned partly in the dark so that just its periphery is visible. Aiming transversely to the edge is performed when mounting the sensor on the consumption meter, and the sen ⁇ sor is mounted so that the edge will be seen to coincide with the periphery of the rotating disc on the consumption meter.
- the aiming edge does not define any aiming plane, and aiming errors can therefore easily occur unless by chance the eye is in the plane of the rotating disc.
- the known sensors When the known sensors are to be mounted on a consumption meter, it requires much care to have the sensor mounted correctly with respect to the parts whose movement the sensor is to detect, and frequently the user cannot check whether the sensor is mounted correctly or optimally. At worst the sensor will not detect any movement at all, while intermittent error function will occur in other cases.
- the object of the invention is to provide a sensor of the present type, which obviates these problems, and which can be mounted correctly on the meter with respect to its con ⁇ sumption indicating parts in a simple and safe manner.
- This object is achieved by designing the aiming means of the sensor such that they define a visual angle around an aiming plane, as stated in claim 1.
- fig. 1 shows a preferred sensor according to the invention at its mounting on a consumption meter as well as an asso ⁇ ciated central unit with calculating facilities
- fig. 2 is a perspective view of the sensor of fig. 1,
- fig. 3 shows the detection principle for the sensor ac ⁇ cording to the invention
- fig. 4 shows the principle for the mounting of the sensor by means of the aiming means according to the invention
- figs. 5, 6 and 7 show the preferred embodiment of the in ⁇ vention in various projections
- figs. 8-12 show alternative embodiments of the aiming means according to the invention.
- Fig. 1 shows an electricity meter 11 with a transparent panel 12 through which the circular disc 13 of the elec ⁇ tricity meter is visible.
- Fig. 4 shows how the disc 13 of the meter is mounted on a vertical shaft 21, and when electric energy is consumed, the shaft 21 with the disc 13 rotates at a rate proportional to the size of the in- stantaneous consumption of electric power.
- the disc 13 is provided with a mark 14, which is typically painted in a colour different from the rest of the disc, but in this case it generally just has a reflec ⁇ tion coefficient which differs from the rest of the peri- pheral edge of the disc.
- Fig. 3 shows the principle of the optical detection of the rotation of the disc 13.
- a light source 18 in the form of a light emitting diode or a lamp emits light through the glass panel 12 of the electricity meter, and the light im ⁇ pinges on the peripheral edge of the disc 13, where part of it is reflected.
- a light sensitive element 19 in the form of a photodiode or phototransistor is arranged in the vicinity of the light source 18 and captures reflected light from the peripheral edge of the disc 13.
- the opti- cally detecting elements 18, 19 are mounted in a sensor casing 15.
- the detecting elements 18, 19 are incorporated in a known manner in electronic circuits, which are capable of applying an electric signal in response to the intensity of the light received by the photosensor 19.
- the mark 14 passes the detecting elements 18, 19 at intervals, and because the reflection coefficient of the mark differs from the rest of the peripheral edge of the disc reflecting light from the light source 18 to the photosensor 19, the intensity of the light received by the photosensor 19 varies at the passage of the mark 14.
- the electric circuit connected to the photosensor 19 will hereby e.g. apply an electric signal in the form of a pulse whose duration corresponds to the time it takes for "the mark 14 to pass.
- a central unit 10 is connected to the detecting elements 18, 19 of the sensor via an electric cable 17.
- the elec ⁇ tric pulses from the detecting elements 18, 19 of the sen- sor are accumulated in the central unit 10, and calcula ⁇ tions are made on the basis of this in a known manner.
- the central unit 10 has a keyboard by means of which data can be entered, such as number of revolutions of the disc 13 per kWh, price per kWh, etc.
- the senor is in a known manner provided with a geometrical masking of the detecting ele ⁇ ments 18, 19 so that their spatial sensitivity range is restricted to a narrow angular interval positioned around a plane, and it is therefore important that the sensor is mounted on the electricity meter in such a manner that the rotating disc is positioned within this angular interval which defines the spatial sensitivity range and preferably in said plane.
- the light source 18 is an infrared light emitting diode
- the photosensor is an infrared sensitive photodiode or phototransistor
- a filter allowing infrared light to pass and consider ⁇ ably subduing visible light is moreover fitted in front of the detecting elements 18, 19.
- the detecting elements of the sensor are incorporated in a sensor casing 15, which consists of a rectangular plate 22 whose one side is formed with a box-shaped extension 23 which is narrower than the rectangular plate 22 and extends in the entire length thereof.
- the detecting elements 18, 19 of the sen ⁇ sor are incorporated in the box-shaped extension 23 appro- ximately halfway between its ends.
- Elongated, through- going slots 16, positioned in extension of each other, are provided on both sides of the elements 18, 19, each of said slots 16 having a depth corresponding to the total thickness of the rectangular plate 22 and the box-shaped extension 23.
- Figs. 1 and 4 show how these elongated slots 16 serve as aiming means when the sensor is to be mounted on the glass panel 12 of the electricity meter.
- the slots 16 define a plane extending substantially perpendicularly to the rectangular plate 22.
- the detecting elements 18, 19 of the sensor are positioned precisely in this plane, and the spatial sensitivity range of these elements is centered about the same plane by means of the mentioned masking.
- the aiming means have an extent in two di ⁇ mensions, whereby a plane is defined, and by such aiming means it will be possible to make this plane coincide with the plane of the disc 13.
- aiming means do not define a plane in a mathematical sense, but define an aiming or visual angle which encircles and approximates a plane. It is then expedient in the preferred embodiment that the aiming means have elongated, parallel inlet and outlet openings at a mutual fixed distance.
- this disc In case of a consumption indicating disc 13, which is ob ⁇ served from the edge, this disc itself defines a plane, and one-dimensional aiming means can then be arranged in the plane of the disc with good certainty.
- Figs. 8-12 show alternative embodiments of the aiming means of the invention. These alternative embodiments are shown to the left in the figures seen from the consumer, in the center of the figures seen from the side, and to the right in the figures seen from above.
- Fig. 8 shows an arragement of parallel pairs of mirrors 24 by which the disc 13 is aimed at in two areas spaced from each other, the paths of rays are displaced in parallel by means of the mirrors 24, and the two areas of the disc are observed through a lens as two half-images, which is seen to the left in fig. 8.
- the two half-images observed through the lens 25 will not be positioned in extension of each other, and it is then a simple matter to remedy this misalignment, because the two half-images are merely to be positioned in extension of each other and in the center of the composite image.
- the pairs of mirrors may be provided with aiming lines as mentioned below in connection with figs. 11-12.
- Fig. 9 shows how a thin wire 26 is fitted in each of the two slots 16.
- the slots 16 have a relatively greater width than in the preferred embodiment described above.
- the wires 26 are positioned in extension of each other, and when the sensor is mounted on the glass panel 12 of the electricity meter, the wires 26 are caused to visually coincide with the peripheral edge of the disc 13.
- two or more paral ⁇ lel wires 26 may be provided in each of the slots 16 in this plane.
- Fig. 10 shows an embodiment where the aiming means are formed by lenses 27 through which aiming is performed at the mounting of the sensor on the glass panel 12 on the electricity meter.
- the lenses 27 may be combined with others of the mentioned aiming means.
- Figs. 11 and 12 show a sensor casing 30 containing the detecting elements 18, 19 of the sensor.
- the sensor more- over comprises a transparent plate 28 carrying, on both sides of the casing 30, some lines 29 which run in exten- sion of each other in pairs. These lines 29 may be printed or painted on the plate 28 or may be scribed in its sur ⁇ face. These lines 29 are used as aiming means for the mounting of the sensor on the glass panel 12 on the elec- tricity meter.
- the embodiment in fig. 11 has two parallel lines on each side of the sensor casing 30, and when the sensor is to be mounted on the glass panel 12 of the elec ⁇ tricity meter the sensor is positioned such that the edge of the disc 13 of the electricity meter is seen between the two pairs of lines 29.
- the embodiment in fig. 12 just has one line 29 on each side of the sensor casing 30, and when the sensor is mounted, these lines are caused to co ⁇ incide with the edge of the disc 13.
- the senor may be constructed such that the aiming means do not form an integrated part of the sensor casing, but are merely temporarily connected with the sensor casing and can be removed. This simulta- neously results in a smaller sensor which is mounted on the consumption meter.
- slots 16 are shown closed at both ends, but the slots may also be open at their ends facing away from each other.
- the embodiments shown here have aiming means on both sides of the detecting elements of the sensor.
- the aiming means may be restricted to being provided on just one side of these elements.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Optical Transform (AREA)
- Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP92916300A EP0621950A1 (en) | 1991-07-12 | 1992-07-10 | A sensor for optical detection of the movable part of a consumption meter for visual indication of the consumption |
JP5501729A JPH06508924A (en) | 1991-07-12 | 1992-07-10 | A sensor that optically detects the movement of the moving parts of a consumption meter that visually displays consumption. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK1342/91 | 1991-07-12 | ||
DK134291A DK134291D0 (en) | 1991-07-12 | 1991-07-12 | SENSOR FOR OPTICAL DETECTION OF CONSUMER INDICATOR INDICATION OF CONSUMPTION |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1993001501A1 true WO1993001501A1 (en) | 1993-01-21 |
Family
ID=8103802
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DK1992/000221 WO1993001501A1 (en) | 1991-07-12 | 1992-07-10 | A sensor for optical detection of the movable part of a consumption meter for visual indication of the consumption |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0621950A1 (en) |
JP (1) | JPH06508924A (en) |
AU (1) | AU2375592A (en) |
CA (1) | CA2113254A1 (en) |
DK (1) | DK134291D0 (en) |
WO (1) | WO1993001501A1 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4416439A1 (en) * | 1994-05-11 | 1995-11-30 | Ruhrkohle Ag | Electrical power consumption meter for controlling power network |
DE4420049A1 (en) * | 1994-06-08 | 1995-12-14 | Siemens Matsushita Components | Retrospective fitting kit for electricity meter |
EP0717286A2 (en) * | 1994-12-16 | 1996-06-19 | THE GENERAL ELECTRIC COMPANY, p.l.c. | Commodity consumption meters |
WO1997009693A1 (en) * | 1995-09-08 | 1997-03-13 | Modesto Alvarez Fernandez | Mechanical meter with remote reading capacity |
GB2321305A (en) * | 1997-01-17 | 1998-07-22 | Marconi Gec Ltd | Remote meter reading apparatus |
GB2326243A (en) * | 1997-06-11 | 1998-12-16 | Abb Metering Syst Ltd | Electricity consumption meters |
US6089319A (en) * | 1998-03-23 | 2000-07-18 | Weatherford/Lamb, Inc. | Whipstock |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109740326A (en) * | 2018-12-13 | 2019-05-10 | 国家电网有限公司 | It is a kind of can the barcode scanning data processing method and system of the electric energy meter that use |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2107093A (en) * | 1981-09-16 | 1983-04-20 | Walker Crosweller And Company | Automatic reading of public utility meters or the like |
US4606223A (en) * | 1983-06-09 | 1986-08-19 | Alps Electric Co., Ltd. | Device for detecting rotating speed of thin shape motor |
GB2172399A (en) * | 1985-03-12 | 1986-09-17 | Eg Technology Limited | Device for converting cyclic motion into digital output |
US4639595A (en) * | 1983-02-21 | 1987-01-27 | Alps Electric Co., Ltd. | Optical rotary encoder |
EP0213265A2 (en) * | 1985-07-31 | 1987-03-11 | LEVI STRAUSS & CO. | Workpiece centering apparatus and method |
US5130641A (en) * | 1990-11-29 | 1992-07-14 | Amrplus Partners | Eddy wheel edge sensor |
-
1991
- 1991-07-12 DK DK134291A patent/DK134291D0/en not_active Application Discontinuation
-
1992
- 1992-07-10 WO PCT/DK1992/000221 patent/WO1993001501A1/en not_active Application Discontinuation
- 1992-07-10 CA CA 2113254 patent/CA2113254A1/en not_active Abandoned
- 1992-07-10 EP EP92916300A patent/EP0621950A1/en not_active Withdrawn
- 1992-07-10 JP JP5501729A patent/JPH06508924A/en active Pending
- 1992-07-10 AU AU23755/92A patent/AU2375592A/en not_active Abandoned
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2107093A (en) * | 1981-09-16 | 1983-04-20 | Walker Crosweller And Company | Automatic reading of public utility meters or the like |
US4639595A (en) * | 1983-02-21 | 1987-01-27 | Alps Electric Co., Ltd. | Optical rotary encoder |
US4606223A (en) * | 1983-06-09 | 1986-08-19 | Alps Electric Co., Ltd. | Device for detecting rotating speed of thin shape motor |
GB2172399A (en) * | 1985-03-12 | 1986-09-17 | Eg Technology Limited | Device for converting cyclic motion into digital output |
EP0213265A2 (en) * | 1985-07-31 | 1987-03-11 | LEVI STRAUSS & CO. | Workpiece centering apparatus and method |
US5130641A (en) * | 1990-11-29 | 1992-07-14 | Amrplus Partners | Eddy wheel edge sensor |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4416439A1 (en) * | 1994-05-11 | 1995-11-30 | Ruhrkohle Ag | Electrical power consumption meter for controlling power network |
DE4420049A1 (en) * | 1994-06-08 | 1995-12-14 | Siemens Matsushita Components | Retrospective fitting kit for electricity meter |
EP0717286A2 (en) * | 1994-12-16 | 1996-06-19 | THE GENERAL ELECTRIC COMPANY, p.l.c. | Commodity consumption meters |
EP0717286A3 (en) * | 1994-12-16 | 1997-05-07 | Gen Electric Co Plc | Commodity consumption meters |
WO1997009693A1 (en) * | 1995-09-08 | 1997-03-13 | Modesto Alvarez Fernandez | Mechanical meter with remote reading capacity |
ES2112177A1 (en) * | 1995-09-08 | 1998-03-16 | Alvarez Fernandez Modesto | Mechanical meter with remote reading capacity |
GB2321305A (en) * | 1997-01-17 | 1998-07-22 | Marconi Gec Ltd | Remote meter reading apparatus |
EP0854557A2 (en) * | 1997-01-17 | 1998-07-22 | Gec-Marconi Limited | Remote meter reading apparatus |
EP0854557A3 (en) * | 1997-01-17 | 1999-01-07 | Gec-Marconi Limited | Remote meter reading apparatus |
GB2326243A (en) * | 1997-06-11 | 1998-12-16 | Abb Metering Syst Ltd | Electricity consumption meters |
GB2326243B (en) * | 1997-06-11 | 2000-10-11 | Abb Metering Syst Ltd | Improvements in or relating to electricity consumption meters |
US6089319A (en) * | 1998-03-23 | 2000-07-18 | Weatherford/Lamb, Inc. | Whipstock |
Also Published As
Publication number | Publication date |
---|---|
AU2375592A (en) | 1993-02-11 |
EP0621950A1 (en) | 1994-11-02 |
DK134291D0 (en) | 1991-07-12 |
CA2113254A1 (en) | 1993-01-21 |
JPH06508924A (en) | 1994-10-06 |
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