JPH0275969A - Electronic watthour meter - Google Patents

Abstract

PURPOSE:To make the work for reading an electric energy easy and to improve the working efficiency by reading out the electric energy with an optical command signal. CONSTITUTION:The electric energy measured by a main body part 20 is displayed on a display part 5 and stored in a memory 6. When a push-button switch 18 is operated in a remote read-out part 30 to read the electric energy, a starting signal is supplied to a command signal generating circuit 13 wherein the command signal with a specified pulse train is generated, and by an LED 11 the command signal is converted to an optical signal and outputted to a phototransistor(PT) 10 of the main body 20. This optical command signal is converted to an electrical signal by the PT 10 and supplied to a read-out control part 9, and the electric energy is read out from the memory 6 by the control part 9 and supplied to an electric energy output part 7, whereby the pulse train corresponding to the electric energy is supplied to the LED 8. Then, by a PT 12 of the read-out part 30, the optical pulse signal is received and supplied to an electric energy conversion part 14, whereby the pulse signal is converted to the corresponding electric energy and stored in a accumulation part 15 then can be displayed on a display device 16.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention relates to an electronic watt-hour meter that optically reads the amount of power calculated from the load voltage and current consumption flowing through the load. .

(Prior Art) Conventionally, power meters, including inductive power hanging meters, visually read the meter of the measured power amount. More specifically, for example, a meter reader goes to the location where the watt-hour meter is installed, reads the meter of the watt-hour meter, and reads the meter. I have transcribed it in my notebook, etc.

(Problem to be Solved by the Invention) Conventional visual meter reading of electric power m is difficult in cases where meter reading is continuously performed on many electric power meters, such as for each electric power meter of each household, or When an Ichiko-type electronic notebook meter is equipped with more functions and the number of items to be read increases, there are problems in that it is relatively stiff, has low work efficiency, and is prone to reading errors. Furthermore, there is also a problem in that transcription errors occur when the visually read electric power amount is transcribed.

This invention was made in view of the above, and its purpose is to prevent reading errors and transcription errors by making the power port optically readable, and to provide an electronic system that improves workability. The purpose is to provide a 1J electric power meter.

[Structure of the Invention] (Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention provides an electronic power meter having a main body that outputs the amount of power in G based on the load voltage and current consumption. is the power m calculated above! T! a storage means for storing the amount of electric power stored in the storage means; a command means for outputting an optical command signal for reading out the amount of electric power stored in the storage means;
successive means connected to the storage means, receiving an optical command signal from the command means, and reading out the electric power m stored in the storage means based on the received command signal; an output means for outputting the read power port as an optical signal; and a storage means for receiving the optical signal of the power port output from the output means and storing the received power amount. The gist is:

(Function) The electronic power ffi meter of the present invention outputs an optical command signal for reading Dennoj, receives this optical command signal, and outputs the amount of electric power read out as an optical signal. , it receives this light and stores power.

(Example) Examples of this defense will be described below with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of an electronic power ω meter according to an embodiment of the present invention. The electronic power meter shown in the same figure has a main body 20 shown in FIG. 1(a) and a main body 20 shown in FIG. 1(b).
The remote reading section 30 shown in FIG. The remote reading section 30 is optically connected to the edge photodiode 11 and the phototransistor 12 provided therein.

The main body 20 includes an auxiliary transformer 1 that converts the signal into a signal proportional to the load voltage of the distribution line, an auxiliary current transformer 2 that converts the signal into a signal proportional to the consumed current, and a voltage signal output from the auxiliary transformer 1. A multiplier 3 that multiplies the current signal output from the auxiliary current transformer 2 and the output of this passenger converter 3 are integrated to calculate the electric power ri.
1, a display unit 5 that displays the power m output from the integrator 4, a memory 6 that stores the power m output from the integrator 4, and an input to the output of the memory 6. The light emitting diode 8 is connected to the light emitting diode 8, and the output is connected to the light emitting diode 8, converting the amount of electric power read from the memory 6 into a pulse train, driving the light emitting diode 8 with this pulse train, and outputting a light pulse train corresponding to the electric power m from the light emitting diode 8. Output power b1 output section 7 and the phototransistor 1
0, the output is connected to the memory 6, and the power n is read out from the memory 6 based on the optical command signal received by the phototransistor 10.
112 [1 successive control unit 9 and the light emitting diode 8
and a phototransistor 10.

The remote reading section 30 has a memory 6 for the main body section 20.
A button switch 18 generates a start signal for reading out the electric power ζ1 stored in the memory and outputting it as an optical signal.
An input is connected to this button switch 18, an output is connected to the light emitting diode 11, and a command signal generator generates a predetermined pulse train command signal based on the activation signal from the button switch 18. The command signal generating circuit 1 is connected to the circuit 13 and the output of the command signal generating circuit 13.
The light emitting diode 11 is driven by a command signal from the light emitting diode 8 and outputs a light pulse train of the command signal, and the light corresponding to the power υ output from the light emitting diode 8 via the power amount output section 7 of the main body section 20. The phototransistor 12 that receives the pulse train, and the phototransistor 1
2, a power energy converter 14 that converts the optical pulse train received by the phototransistor 12 into a corresponding power amount; a storage section 15 that stores the electric power output from the power loss converter 14; A display 16 for displaying the amount of power stored in the storage section 15, an output stage 17 for separately outputting the amount of power stored in the storage section 15, and this output stage 17 connected to an external device, It is comprised of a connector 19 for outputting electric power m from the output horn stage 17 to an external device.

FIG. 2 is a perspective view showing the structural configuration of the electronic power meter of FIG. 1. The main body part 20 of this electronic power meter has a display part 5 at the upper part of the front surface, and a light emitting diode 8 and a phototransistor 10 are arranged in the lower right part. Also, remote reading 61! The reference numeral 30 has a slender rectangular parallelepiped shape that is easy to hold in the hand, and in the figure, a light emitting diode 11 and a phototransistor 12 are provided on one side facing the main body 20, and a connector is provided on the opposite side. 19, and a display 16 and button switches 18 are provided on the top surface.

Next, the action will be explained.

The power loss measured by the rotation of the auxiliary transformer 1, the auxiliary transformer 2, the multiplier 3, and the integrator 4 in the main body 20 is displayed on the display 5 and stored in the memory 6. In order to read the electric power stored in the memory 6 from the remote reading section 30 in this manner, the button switch 18 of the remote reading section 30 is first operated. When the button switch 18 is operated, a start signal is supplied from the button switch 18 to the command signal generation circuit 13, and thereby the command signal generation circuit 13 generates a command signal of a predetermined pulse train.

The light emitting diode 11 ii is driven by this command signal, and the command signal is converted into an optical signal and output towards the phototransistor 10 of the main body 20 .
Light is received at 0.

The optical command signal received by the phototransistor 10 of the main body section 20 is converted into an electrical signal and supplied to the readout control eA9. The readout control unit 9 controls the memory 6 based on this command signal, and reads out the electric power machine from the memory 6. The power loss read from the memory 6 is supplied to the power m output section 7 and converted into a pulse train corresponding to the amount of power, and the light emitting diode 8 is driven by this pulse train. The light emitting diode 8 outputs a C light pulse signal in response to this pulse train.

The light pulse signal outputted from the light emitting diode 8 of the main body F, 1120 is received by the phototransistor 12 of the remote reading section 30, and is supplied to the power variable section 3iI4 section 14. The power converter 14 converts the supplied pulse fii month into a corresponding amount of power and stores it in the storage unit 15. Accumulation section 1
The electric power m stored in the power supply unit 5 is displayed on a display 16 and is supplied to an external device (not shown) via an output stage 17 and a connector 19 as necessary.

[Effects of the Invention] As explained above, according to the present invention, an optical command signal for reading out the amount of electric power is output, and the amount of electric power read out by receiving this optical command signal is outputted as an optical signal. However, since the light is received and the electric power m is stored, there is no need to visually read the electric power meter as in the past, and there is no need to transcribe the electric power meter, so the work of reading the electric power amount is simplified. This simplifies the process and eliminates reading and transcription errors, which improves work efficiency.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of an electronic power meter according to an embodiment of the present invention, and FIG. 2 is a perspective view showing the structural configuration of the electronic power meter shown in FIG. 5...Display section 6...Memory 7...Power m output section 8...Light emitting diode 9...Readout a11 control section 10...Phototransistor 11...Light emitting diode 12...Photo Transistor 13...Command signal generation circuit 14...Electric energy conversion section 15...Storage section 16...Display device 18.
... Button switch 20 ... Main body part 30 ... Remote reading part

Claims (3)

[Claims] (1) In an electronic watt-hour meter having a main body that calculates the amount of electricity based on load voltage and current consumption, a storage means for storing the above-mentioned calculated amount of electricity, and a storage means for storing the amount of electricity stored in the storage means. a commanding means for outputting an optical command signal for reading; and a commanding means connected to the storage means, receiving an optical command signal from the commanding means, and storing information in the storage means based on the received command signal. reading means for reading out the amount of electric power read out by the reading means; output means for outputting the amount of electric power read by the reading means as an optical signal; An electronic watt-hour meter characterized by comprising: storage means for accumulating the amount of electric power generated. (2) The storage means, the readout means, and the output means are provided in the main body, and the command means and the storage means are provided separately from the main body. electronic electricity meter. (3) The electronic watt-hour meter according to claim 1, wherein the storage means has a display section that displays the amount of power received.