AU2000240001B2 - Alternating current meter with photoelectric digital counter structure - Google Patents
Alternating current meter with photoelectric digital counter structure Download PDFInfo
- Publication number
- AU2000240001B2 AU2000240001B2 AU2000240001A AU2000240001A AU2000240001B2 AU 2000240001 B2 AU2000240001 B2 AU 2000240001B2 AU 2000240001 A AU2000240001 A AU 2000240001A AU 2000240001 A AU2000240001 A AU 2000240001A AU 2000240001 B2 AU2000240001 B2 AU 2000240001B2
- Authority
- AU
- Australia
- Prior art keywords
- light
- alternating current
- rotary disk
- metal rotary
- current meter
- 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
Classifications
-
- 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
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R21/00—Arrangements for measuring electric power or power factor
- G01R21/133—Arrangements for measuring electric power or power factor by using digital technique
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optical Transform (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Description
WO 01/63303 PCT/US00/03702 Title Alternating Current Meter with Photoelectric Digital Counter Structure Field of the Present Invention The present invention relates generally to an electricity consumption counter of the alternating current electric meter, and more particularly to an electronic digital counter of the alternating current meter. The electronic digital counter is capable of converting the data of the electricity consumption into digital signals, which are then transmitted by the electronic digital counter.
Background of the Present Invention The consumptions of the alternating current and the three-phase current by the industry and the private home are measured by the induction-type electric meter, which comprises an electric current magnet 10, a voltage magnet 20, an arresting magnet and a mechanical counter 40, as shown in FIG 1. The mechanical counter 40 is formed of a metal rotary disk 41 and a gear train counter 42. The metal rotary disk 41 is provided at the center thereof with a center shaft 43 which is pivotally fastened at the bottom thereof with the housing of the alternating current meter. As soon as the power consumption begins, the current flows into the alternation current meter such that the voltage magnet effects a movable magnetic field. The metal rotary disk 41 is induced by the magnetic field of the voltage magnet 20 to turn such that a worm 44 is actuated to turn on the 2 0 center shaft 43. In view of the worm 44 being engaged with a worm gear 45 of the gear train counter 42, the rotational speed of the metal rotary disk 41 is transmitted to the counter 42. As a result, the numerical data of the revolutions of the metal rotary disk'41 are exhibited by the counter 42. The numerical data represent the power consumption by a client of the power company. It is therefore necessary for the power company to hire a number of persons to record the numerical data described above. Such a practice of the manual recording of the numerical data of power consumption is not cost-effective. In addition, the counter 42 is in fact not reliable in view of the mechanical deficiencies of the electric meter. The function of the counter 42 is carried out by a plurality of gear train 1 SUBSTITUTE SHEET (RULE 26) WO 01/63303 PCT/US00/03702 sets which are used in the cumulative counting and the number switching. In the transmission process from the metal rotary disk 41 to the counter 42, the mechanical error of the engagement of the gears can take place at any time. The problem is further compounded by the inherent error of the counter 42. The accumulative error can result in a substantial financial loss to either the power user or the power company.
Summary of the Present Invention It is the main objective of the present invention to provide an alternating current electric meter with a photoelectric digital counter in place of the conventional mechanical counter which is susceptible to mechanical error.
It is another objective of the present invention to provide an alternating current electric meter which is simple in construction and is free from the error caused by the mechanical transmission.
It is still another objective of the present invention to provide an alternating current electric meter which is small in size, light in weight, and cost-effective.
It is still another objective of the present invention to provide an alternating current capable of transmitting an electronic digital signal to a remote terminal, thereby eliminating the costly man power for the on-site recording of the power consumption by a client of the power company.
Brief Description of Drawings FIG. 1 is a schematic view of an induction-type electric meter of the prior art.
FIG. 2 is a schematic view of alternating current meter with photoelectric digital counter structure according to a first preferred embodiment of the present invention.
FIG. 3 is a schematic view of alternating current meter with photoelectric digital counter structure according to a second preferred embodiment of the present invention.
2 SUBSTITUTE SHEET (RULE 26) WO 01/63303 PCT/U SOO/03702 Detailed Description of the Preferred Embodiment Referring to FIG. 2, An alternating current meter with photoelectric digital counter structure according to a first preferred embodiment of the present invention, which is Comprises a metal rotary disk 50, a light-emitting element 60, a photosensing element 70, and a signal line The metal rotary disk 50 has a face plate which is provided with a vertical through hole 51 and is further provided in the center thereof with a center shaft 52 which is pivotally fastened at the bottom end thereof with a housing of the alternating current electric meter, as shown by the imaginary lines in FIG. 2. The metal rotary disk 50 is induced by the magnetic field to turn such that the center shaft 52 turns simultaneously.
The light-emitting element 60 and the photosensing element 70 are fastened with the housing such that the light-emitting element 60 is corresponding in location to one of the face plates of the metal rotary disk 50, and that the light-emitting element 60 is separated from the metal rotary disk 50 by an appropriate distance. The light-emitting element 60 has a light-emitting end 61 capable of emitting light which is projected on the moving path of the vertical through hole 51. The photosensing element 70 is located on other face plate of the metal rotary disk 50 such that the photosensing element 70 is separated from the metal rotary disk 50 by an appropriate distance, and that a light receiving end 71 of the photosensing element 70 is corresponding in location to the lightemitting end 61 of the light-emitting element 60. The photosensing element 70 has a signal output end 72, which is connected with the signal line As soon as the power consumption begins, the metal rotary disk 50 is driven to turn by the magnetic field of the voltage magnet 20. In the meantime, the light emitted by the light emitting end 61of the light-emitting element 60 is projected continuously on the face plate of the metal rotary disk 50. When the through hole 51 of the metal rotary disk in motion arrives at the position where the light-emitting element 60 is located, the light signal emitted by the light-emitting end 61 is received by the light-receiving end 71 of the photosensing element 70 via the through hole 51 of the metal rotary disk 50. In other word, when the metal rotary disk 50 in motion completes one revolution, the light 3 SUBSTITUTE SHEET (RULE 26) WO 01/63303 PCT/U SOO/03702 signal is received once by the photosensing element 70. As long as the metal rotary disk turns, the photosensing element 70 receives the light signal intermittently. The light signal is then converted into a digital signal which is transmitted via the signal line 80 to an electronic counter or a remote terminal. The transmission of the digital signal of the present invention is attained without the use of the mechanical transmission.
As shown in FIG. 3, the metal rotary disk 50 is provided additionally with at least one vertical through hole 51' in addition to the first vertical through hole 51. As a result, two light signals are received by the photosensing element 70 via the two through holes 51 and 51' when the rotating disk 50 completes one revolution. The addition of the through hole of the metal rotary disk 50 results in a more precise reading of the power consumption.
It is therefore readily apparent that the electric meter of the present invention has advantages over the conventional electric meter. In the first place, the present invention is free from the error caused by the mechanical transmission of the conventional electric meter. In addition, the present invention is free from the gear train counter and the worm gear and is therefore small in size, light in weight, and cost-effective. Moreover, the present invention eliminates the costly man power for the on-site recording of the power consumption.
4 SUBSTITUTE SHEET (RULE 26)
Claims (2)
1. An alternating current meter with photoelectric digital counter structure, comprising: a metal rotary disk has a face plate which is provided with a vertical through hole and is further provided in the center thereof with a center shaft which is pivotally fastened at the bottom end thereof with a housing of said alternating current meter; a light-emitting element is fasten with said housing of said alternating current meter, and is corresponding in location to one of the face plates of said metal rotary disk, and is separated from said metal rotary disk by an appropriate distance, said light- emitting element further has a light-emitting end capable of emitting light which is projected on the moving path of said vertical through hole; a photosensing element is fasten with said housing of said alternating current meter, and is located on other face plate of said metal rotary disk and is separated from said metal rotary disk by an appropriate distancesuch, and having a light receiving end and a signal output end, whrerin said ight receiving end is corresponding in location to said light-emitting end of said light-emitting element; and a signal line is connected with said signal output end of said photosensing element, which is transmitted a digital singal to an electronic counter or a remote terminal.
2. An alternating current meter with photoelectric digital counter structure, as recited in claim 1, wherein said face plate of said metal rotary disk is provided with at least two vertical through holes. SUBSTITUTE SHEET (RULE 26)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/US2000/003702 WO2001063303A1 (en) | 2000-02-22 | 2000-02-22 | Alternating current meter with photoelectric digital counter structure |
Publications (2)
Publication Number | Publication Date |
---|---|
AU2000240001A1 AU2000240001A1 (en) | 2001-11-15 |
AU2000240001B2 true AU2000240001B2 (en) | 2005-11-10 |
Family
ID=21741057
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU4000100A Pending AU4000100A (en) | 2000-02-22 | 2000-02-22 | Alternating current meter with photoelectric digital counter structure |
AU2000240001A Expired - Fee Related AU2000240001B2 (en) | 2000-02-22 | 2000-02-22 | Alternating current meter with photoelectric digital counter structure |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU4000100A Pending AU4000100A (en) | 2000-02-22 | 2000-02-22 | Alternating current meter with photoelectric digital counter structure |
Country Status (4)
Country | Link |
---|---|
JP (1) | JP2003524189A (en) |
AU (2) | AU4000100A (en) |
GB (1) | GB2375827A (en) |
WO (1) | WO2001063303A1 (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3602703A (en) * | 1969-10-20 | 1971-08-31 | Ibm | Power demand predicting control system |
US4301508A (en) * | 1979-03-28 | 1981-11-17 | Eaton Corp. | Digital processing system for time-of-day and demand meter display |
-
2000
- 2000-02-22 AU AU4000100A patent/AU4000100A/en active Pending
- 2000-02-22 WO PCT/US2000/003702 patent/WO2001063303A1/en active Application Filing
- 2000-02-22 AU AU2000240001A patent/AU2000240001B2/en not_active Expired - Fee Related
- 2000-02-22 GB GB0217890A patent/GB2375827A/en not_active Withdrawn
- 2000-02-22 JP JP2001562216A patent/JP2003524189A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3602703A (en) * | 1969-10-20 | 1971-08-31 | Ibm | Power demand predicting control system |
US4301508A (en) * | 1979-03-28 | 1981-11-17 | Eaton Corp. | Digital processing system for time-of-day and demand meter display |
Also Published As
Publication number | Publication date |
---|---|
AU4000100A (en) | 2001-09-03 |
WO2001063303A1 (en) | 2001-08-30 |
GB2375827A (en) | 2002-11-27 |
JP2003524189A (en) | 2003-08-12 |
GB0217890D0 (en) | 2002-09-11 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MK4 | Application lapsed section 142(2)(d) - no continuation fee paid for the application |