KR200278950Y1 - Apparatus for remote reading of power meter - Google Patents

Abstract

The present invention installs a communication module in the integrated electricity meter so that the amount of electric energy can be checked at a long distance without visiting the site, and the remote meter reading device of the integrated electricity meter which provides convenience of electricity consumption metering, management efficiency and structure simplification. It is about.

The remote meter reading device of the integrated power meter according to the present invention transmits and receives an infrared signal to any one of a worm wheel or a rotating disk due to the magnetic flux of the voltage coil and the current coil according to the power consumption. A pulse detecting means comprising a light emitting element and a light receiving element which detects the rotational speed of the rotating disc and converts it into a pulse signal, and outputs the pulse signal obtained by the pulse detection means; A power amount converting means and transmitting means for modulating the amount of used power obtained in the power amount converting means and transmitting the power amount to a remote place through a power input line;

Accordingly, when detecting the rotational speed of the rotating disk or the worm wheel according to the use of electrical energy, chattering does not occur, and the amount of power used is transmitted through the power input line, so that the meter reader does not visit the site at a long distance. There is an advantage that can more easily read the amount of power used.

Description

Remote meter reading device of integrated electricity meter {APPARATUS FOR REMOTE READING OF POWER METER}

The present invention, for example, relates to a mechanical integrated power meter for measuring the amount of power consumed in a general home or office, factory, etc. More specifically, by installing a communication module in the integrated power meter to check the amount of electrical energy from a remote site without visiting the site The present invention relates to a remote meter reading device of an integrated power meter, which makes it possible to balance convenience of electricity consumption metering, management efficiency and structure simplification.

In general, the mechanical integrated power meter, which is mainly used in the power consumer, connects the voltage coil and the current coil to the supply path of electricity flowing through the power supply line and flows through the load power line, and then to the magnetic flux induced from the voltage coil and the current coil. The rotational force of the rotating disc is generated, and the number of revolutions of the rotating disc is displayed by using a counter such as an analog counter. The meter reader visits Gahoho to read the mechanical integrated power meter. The meter readings of the electricity meters installed in each customer were visually checked, written down in a notebook, and the meter reading part was made, and then the contents of the meter reading were inputted into a computer system for issuance. According to such a primitive metering method, many meter readers require a lot of time, as well as labor costs. Moreover, the number of crime prevention acts disguised as meter readers is increasing, which is a social problem.

As a way to solve this problem, a remote meter reading device of a mechanical total electricity meter that can read the power consumption from a long distance without a visitor to the home has been devised and commercialized.

FIG. 1 is a cross-sectional view briefly showing such a general mechanical watt hour meter.

As shown in FIG. 1, the mechanical calorimeter is provided with a first shaft 21 in the center of the frame 20, and first to third numeric rotation bodies 22 to 24 on the first shaft 21. ) Is rotatably installed, the second shaft 25 is provided at the rear of the first shaft 21, and the first to third numeral rotating bodies 22 to 24 are provided at the second shaft 25. The carriage 26 which rotates the shaft is axially coupled.

In addition, one end of the drive shaft 27 of the first shaft 21 is coupled to the worm 28 and the worm wheel 29 is coupled to the rotation disc of the wattmeter not shown in the drawings, the other end of the drive shaft 27 The drive gear 30 is axially coupled to the outside of the frame 20, and the intermediate shaft 31 is installed in the vicinity of the drive shaft 27 so as to be exposed to the outside of the frame 20, the intermediate shaft ( One end of the 21 is coupled to the driven gear 32 to engage the drive gear 30 to be positioned outside the frame 20, the other end of the intermediate shaft 21 is driven gear to be located inside the frame 20 33 is engaged with the first numeral rotating body 22. Here, looking at the configuration of the pulse detection transmitting means installed in the frame 20, the magnet 34 magnetized in the radial direction is inserted into the first numeral rotating body 22, the plastic guide member 35 Reed switch 36 in a horizontal direction intersecting with the first numeral rotating body 22 in the frame 20 of the adjacent distance is fixed so as to be located at an appropriate numeral, and does not contact the first numeric rotating body 22 Is fixed.

On the other hand, the first to third numeral rotating bodies 22 to 24 are configured to generate ten pulses in one rotation of the first numeric rotating body 22 according to the rotational motion of the worm wheel 29.

Therefore, in the state where the power is applied through the terminal CA (DB) of the reed switch 36, the rotary disk axially coupled to the worm 9 according to the load power consumption of the user is rotated and the worm according to this rotation The rotational force is transmitted to the wheel 29, wherein the rotational force is sequentially transmitted to the drive shaft 27, the drive gear 30 and the driven gear 32 connected thereto, and the intermediate shaft 31 and the driven gear coupled to the driven gear. Will rotate (33).

As the driven gear 33 rotates as described above, the first number rotating body 22 coupled thereto rotates, and the magnet approaches by the magnetic field of the magnet 34 fixed inside the first number rotating body 22. In this case, when the reed switch 36 is turned on while the reed switch 36 is turned off, it is turned off, and a pulse signal proportional to the measured value is output and accumulated in the remote meter reading coupler (not shown). At this time, 10 pulses are generated in one rotation of the first numeric rotating body 22, thereby obtaining an output.

However, the above-described pulse detection apparatus of the conventional mechanical integrated power meter has to manufacture magnets and magnets used to obtain pulses according to load power consumption according to the size of the rotating body. It is difficult to assemble because it is fixed in the inside, the gap between the magnet and the magnet is narrow, chattering phenomenon occurs when the rotor is close to the reed switch, the pulse is unstable and the result of the remote meter reading There is a drawback that many complaints occur because of lack of reliability.

In addition, most of the pulses detected by the pulse detection device to communicate through a wireless network or via a telephone line, at this time, the remote meter reading is not properly made due to the communication failure, and the installation of a wireless communication repeater or modem, etc. The cost has been pointed out as a problem that is a big economic burden.

Therefore, the mechanical metering power meter that can heal the conventional problems as described above, and can more accurately read and transmit the remote metering device of a lower cost mechanical metering power meter in terms of cost, and in terms of reliability, without using a pulse detection error and communication failure It is desirable to provide a remote meter reading device.

Accordingly, an object of the present invention is to provide a remote meter reading device of a cumulative electricity meter to install a wired communication means to a conventional mechanical meter to facilitate checking the amount of power used at a long distance without visiting the field. It is achieved by detecting the number of revolutions of the rotating disc in use by the pulse detector and converting the detected number of revolutions into an amount of power in the amount of power conversion unit and transmitting it through the transmitter.

Another object of the present invention is to provide a remote meter reading device of an integrated wattmeter to induce a more accurate detection without a chattering phenomenon (chattering) when the pulse detection according to the use of electrical energy, and also to transmit the power consumption without a communication failure, This remote meter reading device is achieved by detecting the number of revolutions of the rotating disc according to the use of electric power by using infrared rays and transmitting the detected electric power amount to the power line.

1 is a cross-sectional view briefly showing a general mechanical integrated power meter,

2 and 3 is a configuration diagram showing an embodiment provided in the description of the remote meter reading device of the integrated power meter according to the present invention,

2 is a cross-sectional view briefly showing an integrated power meter installed with the remote meter reading device,

3 is a block diagram showing in detail the remote meter reading device of FIG.

<Description of the symbols for the main parts of the drawings>

42: power input line 44: load power line

50: voltage coil 52: current coil

60: rotation disk 70: pulse detection unit

72 light emitting element 74 light receiving element

80: power amount conversion unit 82: counting unit

84: magnification part 86: time switch

90 transmitter 91 modulator

According to the remote meter reading device of the integrated power meter according to the present invention for achieving the above object, a rotary disk which rotates due to the magnetic flux of the voltage coil and current coil connected to the power input line, coupled to the drive shaft of the rotary disk In the mechanical integrated power meter comprising a worm wheel that receives the rotational force through the worm and rotates, and the first to third numerical rotating body rotatably installed on the first shaft coupled to the drive shaft to display the amount of power used by the worm wheel; (1) a light emitting device and a light receiving device for transmitting and receiving an infrared signal to any one of the rotating worm wheel or the rotating disc to detect the number of revolutions of the worm wheel or the rotating disc, and convert the result into a pulse signal Pulse detection means; (2) power amount converting means for integrating a pulse signal corresponding to the number of revolutions obtained from the pulse detecting means and converting the integrated value into an amount of power; And (3) transmitting means for modulating the amount of power used by said power amount converting means and transmitting it to said power input line.

Preferably, the power amount converting means comprises: (1) a counting unit for adding one pulse signal detected by the pulse detecting means; (2) a time switch generating a chip select signal at a predetermined cycle; And (3) a multiplier for converting the count value of the counter into an amount of electric power and outputting the count value according to a chip selection signal of the time switch at a predetermined period.

Preferably, the transmitting means comprises: (1) a modulator for mixing the amount of power obtained by the power amount converting means with a carrier generated by the carrier generating unit; (2) a band pass filter for band-pass filtering the amount of power modulated by the modulator and transmitting the power through the power input line; (3) a pulse generator for generating a pulse of a predetermined period each time the amount of power is modulated and output from the modulator; And (4) a low pass filter for low pass filtering the pulses of a predetermined period obtained by the pulse generator and transmitting them through the power input line.

In this way, by installing a remote meter reading device in the mechanical integrated power meter, the rotational speed of the rotating disk according to the amount of power used in each home is detected by using an infrared signal, and the detected rotational speed is integrated and converted into the amount of power It can be seen that it is transmitted to the remote place through the power input line.

As a result, chattering does not occur when detecting the rotational speed of the rotating disc or the worm wheel according to the use of electric energy, and the amount of power used is transmitted to the power input line, so that communication failure does not occur, and the meter reader is used to monitor the site. There is an advantage that it is more convenient to check the amount of power used at a distance without visiting.

And, there may be a plurality of embodiments of the present invention, the following will be described in detail for the most preferred embodiment.

Through this preferred embodiment, the object of the present invention, other objects, features and advantages will become more apparent from the following description with an embodiment according to the present invention in connection with the accompanying drawings shown for illustrative purposes.

In addition, in each figure used for description, the same code | symbol is attached | subjected about the component similar to the prior art, and the overlapping description may be abbreviate | omitted.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the remote meter reading device of the integrated power meter according to the present invention.

2 is a cross-sectional view briefly showing an integrated power meter installed with a remote meter reading device according to the present invention.

As shown in FIG. 2, the magnetic flux is connected to the load power supply line 42 and the power input line 44 respectively connected to the connecting portion 40 of the integrated power meter and the power input line and the load power supply line. Combined with the voltage coil 50, the current coil 52 to be induced, and the rotating disk 60 is installed between the voltage coil and the current coil to rotate due to the induced magnetic flux, and the drive shaft 27, the rotating disk The worm wheel 29 is rotated by receiving the rotational force of the 60 through the worm 28 and the first shaft 21 coupled to the drive shaft 27 is rotatably installed to display the amount of power used numerically. 1 to 3rd numeric rotors 22 to 24, driven gears 33 for rotating in engagement with the first rotary bodies 22 coupled to the first shafts 21, and rear of the first shafts 21; Mechanical integrated power having a carriage 26 installed on the second shaft 25 installed in the rotary shaft 25 to rotate the first to third numeral rotating bodies 22 to 24. In the meter, the light emitting element 72 and the light receiving element 74 transmit and receive an infrared signal to the rotating worm wheel 29 to detect the rotational speed of the worm wheel 29, convert it into a pulse signal, and output the pulse signal. In the pulse detection unit 70 and the pulse amount detected by the pulse detection unit 70, the power amount conversion unit 80 and the power amount conversion unit 80 for converting the integrated value into the amount of power output And a transmitter 90 for modulating the amount of power used to be transmitted to the remote site via the power input line 44 of the connection unit 40.

In the above, as shown in FIG. 3, the power amount converting unit 80 includes a counter 82 which sequentially counts pulse signals output through the light receiving element 74 of the pulse detector 70, and a chip at a predetermined cycle. The time switch 86 for generating the selection signal and the value counted by the counting unit 82 are converted into the amount of power, and each time the chip selection signal of the time switch 86 is inputted, the converted power amount is output for each predetermined period. It consists of the magnification part 84.

In addition, the transmission unit 90 installed in the mechanical integrated power meter is a modulation unit for mixing the output of the power generated by the carrier generation unit 92 with the amount of power output for each period from the multiplier 84 of the power conversion unit 80 And a band pass filter 93 for band-filtering the amount of power modulated by the modulator to be transmitted to the remote site through the power input line 44 connected to the connecting portion 40, and from the modulator 91. When the power amount is periodically modulated and output, the pulse generator 94 generates a pulse signal of a predetermined period and the power input line of the connection portion 40 by low-pass filtering the pulse signal of the constant period generated by the pulse generator. 44 is composed of a low pass filter unit 95 for transmitting to a remote site.

The remote meter reading device of the integrated power meter according to the present invention made as described above will be described in more detail with reference to FIGS. 2 and 3.

First, the power input line 44 and the load power line in accordance with the power consumption of the user in the state that the power is applied through the power input line 44 and the load power line 42 connected to the connection portion 40 of the mechanical integrated power meter ( The magnetic flux is induced between the voltage coil 50 and the current coil 52 connected to 42 to rotate the rotating disc 60. When the rotating disc 60 rotates according to the power consumption, the worm 28 and the worm wheel 29 coupled to the shaft rotate to transmit the rotational force to the drive shaft 27 and the second shaft 25, and as a result, As the first to third numerical rotating bodies 22 to 24 rotate by the tufts 26 provided on the second shaft 25, the amount of power used is displayed numerically.

Here, the rotational speed of the rotation disk 60 is rotated in accordance with the gear ratio of the worm wheel 29, wherein the light emitting device 72 of the pulse detection unit 70 installed on one side of the worm wheel 29 warns the infrared signal The um wheel 29 is irradiated. The infrared signal passing through the worm wheel 29 is incident on the light receiving element 74, and a pulse signal is output therefrom. That is, each time the worm wheel 29 rotates once, one pulse signal is output from the pulse detection unit 70 and provided to the power conversion unit 80.

The counting unit 82 of the power amount converting unit 80 integrates each time a pulse signal is provided from the pulse detecting unit 70 and provides it to the multiplier 84, and the multiplier 84 is integrated in the counting unit 82. After converting a value into an amount of power, each time the chip select signal of the time switch 86 is input, the modulator provided in the transmitter 90 transmits the converted amount of power in a predetermined period, for example, 15 minutes, 30 minutes, or 60 minutes. Provide to 91.

The modulator 91 of the transmitter 90 mixes the amount of power provided by the multiplier 84 of the power amount converting unit 80 with the carrier signal generated by the carrier generator 92 to pass through the bandpass filter 93. In addition, the pulse generator 94 is enabled whenever the modulated power is output.

Accordingly, the pulse generator 94 generates a pulse signal of a predetermined period by the modulator 91, performs low pass filtering through the low pass filter 95, and then sends the pulse signal to the remote place through the power input line 44. In addition, the bandpass filter unit 93 band-modulates the amount of power input by being modulated to the carrier signal by the modulator 91 and transmits the power to the remote place through the power input line 44, thereby easily confirming the power consumption of the user at the remote place. Can read.

In addition, the above-described pulse detection unit 70 is provided on one side of the rotating disc 60 in addition to the worm wheel 29 side, and the same condition as described above can be obtained by detecting the rotational speed of the rotating disc 60 according to the power consumption. have.

On the other hand, as a comparative example, there is a difficulty in manufacturing a magnet and magnetizer according to the size of a rotating body in order to obtain a pulse according to the conventional technology, that is, the load power consumption. Unlike the transmission through the telephone line, the present invention detects the number of revolutions of the rotating disc by using an infrared signal, and it can be seen that the amount of power used is transmitted to a remote location without a communication failure through a power input line.

In this result, according to the present invention, not only does the chattering phenomenon occur when detecting the rotational speed of the rotating disc or the worm wheel according to the use of electric energy, but also the power consumption is transmitted through the power input line. There is an advantage that can more easily read the amount of power used at a distance without visiting.

In addition, although specific embodiments of the present invention have been described and illustrated above, it is obvious that the present invention may be variously modified and implemented by those skilled in the art.

Such modified embodiments should not be individually understood from the technical spirit or the prospect of the present invention, and such modified embodiments shall fall within the appended utility model registration claims of the present invention.

According to the remote metering device of the integrated power meter of the present invention, which is apparent from the above description, a chattering phenomenon occurs when the rotational speed of the rotating disc or the worm wheel is detected by the use of electrical energy by installing the remote metering device in the mechanical meter. There is an effect that does not occur.

In addition, by transmitting the power consumption through the power input line, not the modem or wireless communication equipment, communication failure does not occur, and the cost burden due to the installation is economically solved, and the power consumption can be used at a long distance without the meter reader visiting the site. There is an effect that you can check conveniently.

Claims (3)

A rotating disk rotating due to the magnetic flux of the voltage coil and the current coil connected to the power input line, a worm wheel coupled to the driving shaft to receive and rotate the rotational force of the rotating disk through the worm, and a first shaft coupled to the driving shaft. A mechanical integrated power meter comprising rotatably installed in the first to third numbered rotating body for displaying the amount of power used by the number; (1) consisting of a light emitting element and a light receiving element for transmitting and receiving an infrared signal to any one of the worm wheel or the rotating disc to rotate to detect the number of revolutions of the worm wheel or the rotating disc and convert it into a pulse signal Pulse detection means; (2) power amount converting means for integrating a pulse signal corresponding to the number of revolutions obtained from the pulse detecting means and converting the integrated value into an amount of power; And (3) a remote meter reading device of an integrated power meter, characterized in that it comprises transmission means for modulating the amount of power used by said power amount converting means and transmitting it to said power input line. The method according to claim 1, wherein the amount of power conversion means, (1) a counting unit which adds, one by one, the pulse signal detected by the pulse detecting means; (2) a time switch generating a chip select signal at a predetermined cycle; And And (3) a multiplier unit for converting the count value of the counting unit into an amount of electric power and outputting it at a predetermined period according to the chip selection signal of the time switch. The method according to claim 1, wherein the transmitting means, (1) a modulator for mixing the amount of power obtained by the power amount converting means with the carrier generated by the carrier generating unit and outputting the mixed amount; (2) a band pass filter for band-pass filtering the amount of power modulated by the modulator and transmitting the power through the power input line; (3) a pulse generator for generating a pulse of a predetermined period each time the amount of power is modulated and output from the modulator; And And (4) a low-pass filter unit for low-pass filtering the pulses of a predetermined period obtained by the pulse generating unit and transmitting them through the power input line.