JP2003524189A - Optoelectronic digital measuring instrument structure of AC power meter - Google Patents

Abstract

(57) [Problem] To provide an optoelectronic digital measuring instrument structure of an AC power meter capable of greatly improving the accuracy of the meter and reducing the volume, weight and manufacturing cost of the meter. SOLUTION: It mainly includes a metal turntable 50, a light emitting component 60, an optical sensor component 70, and a signal line 80. A vertical perforation 51 is formed at an appropriate position on the plate surface of the metal turntable, and the light emitting component and the optical sensor component are installed opposite to the rotation route of the upper and lower edges of the hole of the metal turntable. When the metal turntable makes one rotation, the light sensor component receives the light signal of the light emitting component once, and at the same time converts the light signal into a digital signal and outputs it through a signal line. Since no mechanical transmission is used in the entire measurement system of the present invention, errors and losses caused by mechanical transmission can be completely eliminated.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD OF THE INVENTION

The present invention relates to a type of AC power meter optoelectronic digital instrument structure. In particular, by converting the amount of power used through an AC power meter into a digital signal and outputting the digital signal, the meter can be measured more accurately,
The present invention relates to an optoelectronic digital measuring instrument structure of an AC power meter which is simple and easy.

[0002]

[Prior art]

Currently, both AC power and three-phase power used for home and industrial use a sensor-type power meter to calculate monthly power consumption. As shown in FIG. 1, the structure of the known sensor type electric power meter includes a current magnet 10
, A voltage magnet 20, a control magnet 30, and a mechanical measuring structure 40. In the mechanical measuring structure 40, a central shaft 43 is fixed to the center of a metal turntable 41, and the bottom of the central shaft 43 is rotatably installed on the housing structure of the AC power meter.
When the user starts using the power, the power first flows into the AC power meter,
A voltage magnet 20 in the AC power meter produces a moving magnetic field. At this time, the metal turntable 41 responds to the magnetic field of the voltage magnet 20 to start rotation and interlocks the rotation of the worm 44 on the central shaft 43. The gear meshes with the worm gear 45 on the measuring instrument 42 on the worm 44, and the rotation speed of the metal turntable 41 is transmitted and input into the measuring instrument 42. Thus, the measuring instrument 42 is displayed in the form of a rotary disk type number, the electric power company dispatches personnel, and records the power consumption of the AC power meter for a certain period.

However, in recent years, the number of personnel required for power meter checking by a power company has greatly increased due to a dramatic increase in power users, resulting in an increase in personnel costs. Further, the internal structure of the measuring instrument 42 is a combination of a plurality of gear units to achieve the progressive measurement and the number switching function. It is performed via the worm 44 on the metal turntable 41. Therefore, the number displayed by the measuring instrument 42 does not always accurately indicate the actual usage amount. This is because each gear in the known measuring instrument structure includes an error during manufacturing, and power loss and an error in meshing are overlapped in the process of transmission,
This is because the error value may be extremely large. That is, there is a permanent gap from the actual usage due to error, and it will increase with time.

[0004]

[Problems to be Solved by the Invention]

In order to overcome the drawbacks of the known structures described above, the present invention aims to provide an optoelectronic digital meter structure for an AC power meter. Since it does not require any mechanical transmission, errors and losses caused by mechanical transmission can be completely eliminated and the accuracy of the meter can be greatly improved. Furthermore, since it does not require any mechanical transmission, it can effectively simplify the internal structure of the power meter and reduce the volume, weight and manufacturing cost of the meter. In addition, since the digital signal output from it can be connected to various measuring devices or remotely operated devices, the electric power company does not need to send personnel to check the meter, thus saving labor costs.

[0005]

[Means for Solving the Problems]

In order to solve the above problems, the present invention provides the following optoelectronic digital measuring instrument structure of an AC power meter. It mainly includes metal turntables, light emitting components, optical sensor components, and signal lines. A central shaft is fixed in the center of the metal rotary disk, and the bottom end of the central shaft is rotatably installed in the housing of the AC power meter, and vertical drilling is performed at an appropriate position on the plate surface of the metal rotary disk. To open. The light emitting component and the optical sensor component are installed on the housing of the AC power meter. The light emitting component corresponds to the plate surface of the metal turntable, leaves an appropriate distance from the metal turntable, does not contact each other, and the light beam emitted from the light source emitting end is rotated by the vertical perforation. Projected on the route. The optical sensor parts are located on the plate surface opposite to the metal turntable, leave a proper distance from the metal turntable, and do not contact each other. The light-receiving end corresponds to the light-emitting end of the light-emitting component and the metal turntable with each other. The signal line is connected to the signal output end of the optical sensor component.

[0006]

DETAILED DESCRIPTION OF THE INVENTION

As shown in FIG. 2, the present invention mainly includes a metal turntable 50, a light emitting component 60, an optical sensor component 70, and a signal line 80. A vertical perforation 51 is provided at an appropriate position on the plate surface of the metal turntable 50, and a central shaft 52 is fixedly provided at the center thereof. The bottom end of the central shaft 52 is rotatably installed in the housing A of the AC power meter (shown by the dotted line in FIG. 2). As a result, when the metal turntable 50 rotates in response to a magnetic field, the central shaft 52 rotates while supporting the metal turntable 50. The light emitting component 60 and the optical sensor component 70 are installed on the housing A of the AC power meter. The light emitting component 60 corresponds to the plate surface of the metal turntable 50 in parallel with the metal turntable 50.
Has a proper distance between them and does not contact each other. The light beam emitted by the light source emitting end 61 is projected onto the rotation route of the vertical perforation 51. The optical sensor component 70 is located on the opposite plate surface of the metal turntable 50, has an appropriate space between the photosensor component 70 and the metal turntable 50, and does not contact each other. The light receiving end 71 and the light source emitting end 61 of the light emitting component 60 face each other across the metal plate 50, and the signal line 80 is connected to the signal output end 72 of the optical sensor component 70.

Subsequently, as shown in FIG. 2, when the user starts using the electric power, the metal rotary disk 5
0 is driven by the magnetic field of the voltage magnet 20 and rotates. At this time, the light beam emitted from the light source emitting end 61 of the light emitting component 60 continuously projects on the plate surface of the metal turntable 50. When the perforation 51 on the surface of the metal turntable 50 rotates to the position of the light emitting component 60, the light beam emitted from the light source emitting end 61 passes through the hole 51 of the metal turntable 50. As a result, the light ray receiving end 71 located in the optical sensor component 70 receives the light ray signal once. When the metal turntable 50 continues to rotate, the perforation 51 rotates and leaves the position of the light emitting component 60, the light beam signal emitted by the light emitting component 60 is intercepted by the plate surface of the metal turntable 50, The optical sensor component 70 receives no light beam signal. That is, when the metal turntable 50 rotates once, the optical sensor component 70 receives the light beam signal once. While the metal turntable 50 continues to rotate, the optical sensor component 70 continuously receives a light beam signal, converts the light beam signal into a digital signal, and simultaneously outputs the signal on the signal line 80. The signal line 80 transmits the digitized signal to another electronic measuring device or a device at a distant position. Thus, no mechanical transmission is used in the process of digitizing the signal. Further, in the metal turntable 50, another vertical perforation 51 'can be added in the route of the plate surface irradiated by the light source emitting end 61 of the light emitting component 60 (FIG. 3).
reference). As a result, the optical sensor component 70 can receive the light beam signal at least twice per rotation of the metal turntable 50, and the output signal can be measured more accurately.

[0008]

【The invention's effect】

As described above, the present invention does not require any mechanical transmission, so that errors and losses caused by mechanical transmission can be completely eliminated, and the accuracy of the meter can be greatly improved. Further, it is possible to eliminate the components such as the worm gear system measuring instrument and the worm gear which are required in the known electric power meter, and it is possible to reduce the volume, weight and manufacturing cost of the meter. In addition, since the digital signal output by the structure of the present invention can be connected to various measuring devices or remotely operated devices, the electric power company does not need to send personnel to check the meter, which can save labor cost. .

[Brief description of drawings]

[Figure 1]   It is a structure instruction | indication figure of a well-known sensor type electric power meter.

[Fig. 2]   It is a structure instruction | indication figure of this invention.

[Figure 3]   FIG. 6 is a structural diagram of another embodiment of the present invention.

[Explanation of symbols]

  10 current magnet  20 voltage magnet  30 control magnet  40 Measurement structure  41 metal turntable  42 measuring instruments  43 central axis  44 Warm  45 Worm Gear  50 metal turntable  51 perforation 51 'perforation  52 central axis   60 light emitting parts   61 Light source emission end   70 Optical sensor parts   71 Ray reception end   72 Signal output end   80 signal lines     A housing

─────────────────────────────────────────────────── ─── Continued front page    (81) Designated countries EP (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, I T, LU, MC, NL, PT, SE), OA (BF, BJ , CF, CG, CI, CM, GA, GN, GW, ML, MR, NE, SN, TD, TG), AP (GH, GM, K E, LS, MW, SD, SL, SZ, TZ, UG, ZW ), EA (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM), AE, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, C R, CU, CZ, DE, DK, DM, EE, ES, FI , GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KP, KR, K Z, LC, LK, LR, LS, LT, LU, LV, MA , MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, S K, SL, TJ, TM, TR, TT, TZ, UA, UG , UZ, VN, YU, ZA, ZW

Claims (2)

[Claims] 1. A metal rotating disk, a light emitting component, an optical sensor component, and a signal line are mainly included, and a central shaft is fixed at the center of the metallic rotating disk, and the bottom end of the central shaft is the AC power meter. It is rotatably installed in a housing, vertical perforations are formed at appropriate positions on the plate surface of the metal turntable, and the light emitting component and the optical sensor component are installed on the housing of the AC power meter. Are parallel to the plate surface of the metal turntable and do not contact each other with a proper distance from the metal turntable, and the light beam emitted by the light source emitting end is on the rotation route of the vertical drilling. The optical sensor component is located on a plate surface opposite to the metal turntable and has a proper distance from the metal turntable and does not contact each other, and the light receiving end thereof emits the light. The light source emission end of the part and the metal turntable are separated from each other. Corresponding, signal lines optoelectronic digital instrument structure of the AC power meter, characterized in that connected on the light sensor component of the signal output end. 2. The optoelectronic digital measuring instrument structure for an AC power meter according to claim 1, wherein at least one vertical perforation can be added on the plate surface of the metal turntable.