SK500052020A3 - Mobile device for testing electricity meter errors - Google Patents

Abstract

The invention relates to a mobile electricity meter tester (1) which makes it possible to test whether electricity meters (S) having optical ports (O), connectors (K) and pulse LEDs (L) perform erroneous measurements, and essentially comprise a portable terminal ( 6) and an electronic load (2), a pulse sensor (3), an optical communication sensor (4) and an energy sensor (5), which can be connected to said terminal wirelessly. The pulse sensor (3) in the mobile electricity meter tester (1) according to the invention comprises a gooseneck (3.1) comprising a double-sided adhesive (3.4) or a clamp (3.5) at one end. In this way, the pulse sensor (3) can be easily adjusted to pulse LEDs (L) located in different parts of the electricity meters (S) of different models.

Description

Technical field

The present invention relates to a portable and lightweight device that performs accurate measurements and is intended for use as a mobile device that can identify meters of various makes and models that perform erroneous measurements without having to disconnect from the mains.

Prior art

A wide range of model brands and a large number of electricity meters are used to measure the electricity consumed by electronic devices in places such as homes, workplaces, etc. Said electricity meters are divided into two groups, namely electromechanical and electronic electricity meters according to their construction.

Electricity meters of electronic type, t. j. smart meters usually have a display, an optical port, connectors, an RS-485 output port and active / reactive pulsed light emitting diodes (LEDs).

When the active, inductive and capacitive energy measured by said electricity meters reaches a certain value determined by the electricity meter constant, the electricity meters make this visible to the outside world as a light pulse produced by the corresponding pulsed LED. The frequency of occurrence of a light pulse is determined by a value called the constant of the meter, the unit of which is pulse / kWh. Because these pulses occur in real time, usually the best way to understand the meter measurement is to use the pulse frequency.

Because said meters are spoiled and erroneous measurements are made over time, it is necessary to test the errors of these meters. Electricity meters that make erroneous measurements can be removed from their place and tested in the laboratory. However, there are not enough laboratories available to test all of these meters, and only severely damaged meters or meters complained of by customers can be tested. Therefore, mobile test devices that are portable and that determine meter measurement errors are designed to test faulty meter meters.

Said mobile electricity meter testers (portable terminals) communicate with a pulse sensor mounted on the meter by wires and after said pulse sensor is mounted on the meters determines how many energy measurements have been made via pulse LEDs flashing at specific intervals according to the energy consumed by the meters. During this procedure, the current and voltage information of the meter is obtained via a wire connection established between the portable terminal and the meters. As a result of the test, the energy measurement and the measured data of the electricity meter are compared and thus we find out whether the electricity meter measures incorrectly.

In the prior art, it may be impossible to mount pulse sensors of current mobile test equipment on different types of electricity meters, because the arrangement of electricity meters of different models and sizes next to each other prevents the mounting of pulse sensors (see KR 100 803 084 BI figure 1). Again, in these applications, pulsed LED meters can be placed in very different locations due to the wide range of makes and models of meters. Therefore, when current designs are mounted on electricity meters, it is difficult to pair the pulse sensor with the pulse LED of the electricity meter. Furthermore, in these applications, because the data transmission between the mobile testers and the meter is provided by cables, it causes piles of cables in the mobile testers. Because processes such as connecting / removing these cables to / from the portable terminal cause a loss of time, they cause the number of meter tests performed by operators per unit time to decrease and the energy losses resulting from erroneous meter measurements to continue for some time.

Problems solved by the invention

The mobile electricity meter tester of the present invention is a device that is connected to operating electricity meters from the outside without disconnecting them and that performs energy measurements using electricity meter current and voltage information. It compares the calculated power and energy information with the energy measured by the meter to determine if the meter is making an erroneous measurement.

The mobile electricity meter tester of the present invention is a lightweight, user-friendly product that can be easily used by test personnel. With this product, meters can be tested much more easily and energy losses caused by erroneous meter measurements can be minimized. In the present invention, the user interface of the portable terminal is simple enough to allow it to be used by any field worker. It can be used extensively in the distribution sector.

The proposed device requires sensors and an electronic load to monitor the operation of the pan-mounted electricity meters. These units, which will be integrated into the meters on the panel, communicate via Bluetooth and send read / written information to the portable terminal.

The mechanical construction of the pulse sensor of the mobile electricity meter tester is realized

S K 50005-2020 Α3 so that it is a type of gooseneck that can be temporarily glued to any electricity meter and can be easily moved and attached. In this way, it is possible to test electricity meters of many different makes and models.

The mobile meter tester connects to the meter connection points using voltage probes and thus receives voltage information. It also measures current information using clamp-type current transformers that connect to cables that are connected to electricity meters.

The mobile electricity meter tester includes an optical communication sensor that communicates via Bluetooth and is designed as a wireless unit. Unlike current mobile test equipment, during the test all the information about the electricity meter can be obtained from the optical communication sensor and thus the energy measurement can be performed. The user can start the test from the portable terminal and can see the test result.

Using a mobile electricity meter tester, the goal is to allow operators to see the accuracy of the measurement. In addition, a detailed report is prepared in the background of each test that is performed. This message also contains various values, such as the serial number of the electricity meter on which the test is performed and the time when the test was performed. This feature makes it easier to collect data and store the collected data along with the meter measurement results.

The essence of the invention

The developed mobile electricity meter tester for fulfilling the object of the present invention is shown in the accompanying drawings, in which:

Figure 1 is a view of a mobile electricity meter tester;

Figure 2a is a front view of the electronic load;

Figure 2b is a perspective view of an electronic load;

Figure 3a is a side view of the pulse sensor;

Figure 3b is a bottom view of the pulse sensor;

Figure 3c is a top view of the pulse sensor;

Figure 3d is a bottom view of a pulse sensor used in an alternative form of the invention;

Figure 3e is a bottom view of the pulse sensor shown in Figure 3d;

Figure 4a is a perspective view of an optical communication sensor;

Figure 4b is a front view of the optical communication sensor shown in Figure 4a;

Figure 4c is a perspective view of the optical communication sensor from another angle;

Figure 5a is a top view of the energy sensor;

Figure 5b is a perspective view of the energy sensor;

Figure 6a is a front view of the portable terminal;

Figure 6b is a bottom view of the portable terminal;

Figure 6c is a right view of the portable terminal;

Figure 6d is a left side view of the portable terminal;

Figure 6e is a front view of the charging station.

The components in the figures are given the following reference numbers:

1. Mobile electricity meter test equipment

2. Electronic load

2.1 Connection interface

2.2 Switch

2.3 Handle

2.4 Fan

3. Pulse sensor

3.1 Gooseneck

3.2 Light sensor

3.3 Base

3.4 Adhesive

3.5 Clamp

4. Optical communication sensor

4.1 Optical reader

4.2 Magnet

5. Energy sensor

5.1 Data input interface

5.2 Warning area

5.3 On / off button

6. Portable terminal

S K 50005-2020 Α3

6.1 Display

6.2 Keyboard

6.3 Charging input poit

7. Charging station

S. Elektromer

E. Meter display

L. Impulse LEP

O. Optical port

P. RS-485 output port

K. Connector

In a preferred embodiment of the present invention, a mobile electricity meter tester (1) that also allows electricity meters (S) having optical ports (O), connectors (K) and pulsed LEDs (L) to perform erroneous measurements, comprising:

- an electronic load (2) having a connection interface (2.1) for connecting the output connectors (K) of the electricity meter (S) by a cable, a control unit, a resistive load, a capacitive load and a wireless data communication module;

- a pulse sensor (3) having a flexible gooseneck (3.1) mounted at one end and aligned with a pulse LED (L) at its other end; a light sensor (3.2) located on the main body attached to one end of the gooseneck (3.1) and which delegates the light emitted from the pulsed LED (L); a control unit adapted to perform energy measurements with respect to the frequency of the light emitted from the pulsed LED (L) and transmit it via the wireless data communication module; and battery;

- an optical communication sensor (4) having an optical reader (4.1) that allows to receive information about the electricity meter (S) from the optical port (O); a control unit adapted to transmit data received by the optical reader (4.1) via a wireless data communication module; and battery;

- an energy sensor (5) having a data input interface (5.1) for receiving current and voltage information relating to the electricity meter (S) by means of current transformers and voltage probes; a control unit adapted to perform energy measurements with respect to the current and voltage information received from the data input interface (5.1) and to transmit them via the wireless data communication module; and battery;

- a portable terminal (6) having a wireless data communication module for establishing wireless data communication with an electronic load (2), a pulse sensor (3), an optical communication sensor (4) and an energy sensor (5); a control unit adapted to compare the measured data received from the pulse sensor (3) and the energy sensor (5), thereby determining whether the electricity meter (S) performs an erroneous measurement; a display (6.1) for displaying the results of the errors generated by the control unit; battery; and a keyboard (6.2).

An electronic load (2), a portable terminal (6), an active-reactive pulse sensor (3), an optical communication sensor (4) and an energy sensor (5), which are housed in the mobile electricity meter tester (1) shown in Figure 1, are not located in a single body of the device; instead, these components, which have different tasks, are also physically separated from each other, and the data communication between the portable terminal (6) and these components is provided wirelessly.

When insufficient energy is taken from the meter (S), said electronic load (2) shown in Figures 2a and 2b is connected to the meter (S) by means of a cable, one end of which is connected to the output connectors (K) of the meter (S) and the other end is connected to the connection interface (2.1) on the main body. Said electronic load (2) can be used as three-phase or single-phase and is designed to be able to generate three pulses during the test according to the variable constants of the meter. The power required to operate the electronic load (2) is received from the mains, so there is no battery on it.

In one embodiment of the invention, a handle (2.3) is also placed on the main body of the electronic load (2) to allow the operator to carry the main body, a fan (2.4) to cool the hardware in the main body and an on / off switch (2.2). electronic load (2).

The active-active pulse sensor (3) shown in Figures 3a to 3e detects the amount of energy measured by the meter (S) during the test, using the frequency of the pulses generated in the pulse LED (L) of the meters (S).

In one embodiment of the invention, the light sensor (3.2) in the pulse sensor (3) is mounted on one end of the gooseneck (3.1), which has a flexible body that can be easily twisted, bent and folded and can be easily shaped; and there is placed a double-sided adhesive tape (3.4) on the bottom of the base (3.3) located on the other end of the gooseneck (3.1). By means of said gooseneck (3.1), the pulse sensor (3) can be temporarily glued to a flat surface (for example, on an electricity meter) and easily moved and can be adjusted as required to pulse LEDs (L) located in different parts of electricity meters (S) of different models. (Figures 3a to 3c).

In another embodiment of the invention, a light sensor (3.2) located on the pulse sensor (3) is attached to one end of said gooseneck (3.1) and is designed at the other end of the gooseneck (3.1) in the form

S K 50005-2020 Α3 terminals (3.5). In this way it is possible to attach the gooseneck (3.1) and thus the pulse sensor (3) by fixing them to surfaces having a certain wall thickness (for example, the upper / lower / side wall of electrical panels) and adjusting them to the pulsed LEDs (L) located as required. in different parts of the electricity meters (S) of different models (Figures 3d and 3e).

The optical communication sensor (4) shown in Figures 4a to 4c is used to obtain by means of its optical reader (4.1) all information concerning the electricity meter (S) (such as index information, serial number, electricity meter constant, date and time information, information test time, system battery status, maximum consumption measuring range, body cover information, tariff information, etc.) stored in the meter memory unit (S) from the optical port (O) of the meters (S). The required measured data and the meter data (S) are transmitted to the portable terminal (6) by means of a control unit via a wireless data communication module.

Since in general the optical ports (O) of the electricity meters (S) are constructed by means of a metallic material, said optical communication sensor (4) is fixed to the optical port (0) by means of a magnet (4.2). Said magnet (4.2) can be attached to the inside of the front part of the main body of the optical communication sensor (4).

The energy sensor (5) shown in Figures 5a and 5b is a measuring unit that measures energy during the test as well as the electricity meter (S) by taking current and voltage information without disconnecting the electricity meter (S). The energy sensor (5) can be started and stopped using the on / off button (5.3) located on the energy sensor (5). The energy sensor (5), preferably, comprises a data input interface (5.1) preferably on the front face of the main body. The current information of the meter (S) is received by means of current transformers of the terminal type, one end of which is connected to the cables connected to the meter (S) and the other end of which is connected to the data input interface (5.1); wherein the voltage information is received by means of voltage probes, one end of which is connected to the tips of the connector (K) of the electricity meter (S) and the other end of which is connected to the data input interface (5.1). The control unit in the main body, after performing the energy measurement calculation using the current and voltage information obtained by said current transformers and voltage probes, transmits the calculated energy information to the portable terminal (6) via a wireless data communication module.

In one embodiment of the present invention, there is also an RS-485 port on the energy sensor (5) and is connected to the output ports (P) of the RS-485 electricity meters (S), which include the RS-485 output port (P), by a cable connection, thereby reach the records and information about the meter (S) by means of the optical port (O), and this information can be transmitted to the portable terminal (6) by means of the control unit via a wireless data communication module.

In one embodiment of the invention, there is a warning area (5.2) on the energy sensor (5), in which the symbols are illuminated by an LED from below, symbolizing such states as on / off, battery, wireless connection, etc. In this way, notifications are provided to the user, such as the on / off status of the device, the status of the battery in it, whether or not a wireless connection is established, and so on.

The portable terminal (6) shown in Figures 6a to 6d is a unit in which the measured electricity meter data is received from the pulse sensor (3) and the actual measured data obtained by the energy sensor (5) s and received wirelessly and compared. The test is started and stopped using the keypad (6.2) on the portable terminal (6) and the test results generated by the control unit are shown on the display (6.1) of the portable terminal (6). The portable terminal (6) establishes a wireless connection with the respective units and starts the test according to the commands received at the beginning of the test (for example, is the electronic load (2) connected or not?).

In one embodiment of the invention, the wireless data communication module used for data communication between the portable terminal (6) and the electronic load (2), the pulse sensor (3), the optical communication sensor (4) and the energy sensor (5) is preferably a Bluetooth module. In an alternative embodiment of the invention, the wireless data communication module may be selected from the group consisting of a WiFi (Wireless Fidehty) module, a Gobal System for Mobile Communications (GSM) module, a General Packet Radio Service (GPRS) module. ), 3rd Generation (3G) module, 4th Generation (4G) module and similar modules.

In the testing process, the pulse sensor (3), the optical communication sensor (4) and the energy sensor (5) transmit the results of their measurements after establishing wireless communication with the portable terminal (6). When not enough energy is taken from the meter (S), an electronic load (2) is also connected to the output connectors (K) of the meter (S). At the end of the test, the control unit in the portable terminal (6) compares the respective measurements and calculates the error rate of the electricity meters (S) in percent (%) and displays this error rate on the display (6.1) of the portable terminal (6). In addition, a detailed report on the tests performed in the background is also prepared by the control unit of the portable terminal (6) using said measured data and meter information. This message contains various information, such as the serial number of the electricity meter on which the test was performed; the time when the test was performed; information whether the electricity meter serial number is incorrect, whether the date and time of the electricity meter are incorrect, whether the system battery is empty, whether the measured maximum consumption interval is incorrect, whether the body cover has been

S K 50005-2020 Α3 opened, whether there is a distortion in the tariff information, whether the measuring circuit is faulty, or the supply circuit is faulty; the state of the liquid crystal display (LCD) and information on whether the physical state of the meter is faulty. The measured values of active power, reactive power, apparent power, pulse sensor and measured error rates during the load test are also displayed.

In one embodiment of the invention, the charging input port (6.3) is located on the underside of the main body of the portable terminal (6) and said portable terminal (6) is mounted in a charging station (7) in which the battery in the main body can be charged.

In one embodiment of the invention, the batteries in the portable terminal (6), the pulse sensor (3), the optical communication sensor (4) and the energy sensor (5) are rechargeable batteries and these batteries can also be charged without being removed from the main bodies above of the mentioned components thanks to the charging input interface such as the adapter input, USB input, etc., located on said components.

In one embodiment of the invention, the control units located in the portable terminal (6), the pulse sensors (3), the optical communication sensor (4) and the energy sensors (5) can be a processor such as a microprocessor, a microcontroller, etc.

Claims (15)

PATENT CLAIMS A mobile meter tester (1) which, in a preferred embodiment of the invention, makes it possible to test whether meters (S) having optical ports (O), connectors (K) and pulse LEDs (L) perform erroneous measurements are substantially characterized by in that it comprises: - a pulse sensor (3) having a flexible gooseneck (3.1) attached at one of its ends and aligned with a pulse LED (L) at its other end; a light sensor (3.2) located on the main body attached to one end of the gooseneck (3.1) and which delegates the light emitted from the pulsed LED (L); a control unit adapted to measure the energy with respect to the frequency of the light emitted from the pulsed LED (L) and transmit it via the wireless data communication module; and battery; - an optical communication sensor (4) having an optical reader (4.1) which makes it possible to receive information concerning the electricity meter (S) from the optical port (O); a control unit adapted to transmit data received by the optical reader (4.1) via a wireless data communication module; and battery; - an energy sensor (5) having a data input interface (5.1) for receiving current and voltage information relating to the electricity meter (S) by means of current transformers and voltage probes; a control unit adapted to perform energy measurements with respect to the current and voltage information received from the data input interface (5.1) and to transmit them via the wireless data communication module; and battery; - a portable terminal (6) having a wireless data communication module to establish wireless data communication with the pulse sensor (3), the optical communication sensor (4) and the energy sensor (5); a control unit adapted to compare the measured data received from the pulse sensor (3) and the energy sensor (5), thereby determining whether the electricity meter (S) performs an erroneous measurement; a display (6.1) for displaying the results of the errors generated by the control unit; battery; and the keyboard (6.2). Mobile electricity meter tester (1) according to claim 1, characterized in that the electronic load (2 has a connection interface (2.1) for connection to the output connectors (K) of the electricity meter (S) via cable, control unit, resistive load, capacitive load and wireless data communication module. Mobile electricity meter tester (1) according to claim 2, characterized in that the electronic load (2) has a main body and comprises a handle (2.3) on the main body to allow the transmission of said main body to be operated. Mobile electricity meter tester (1) according to claim 2 or 3, characterized in that the electronic load (2) comprises a fan (2.4) for cooling the technical equipment located therein. Mobile electricity meter tester (1) according to claim 2 or 3, characterized in that the electronic load (2) comprises an on / off switch (2.2). Mobile electricity meter tester (1) according to claim 2, characterized in that the portable terminal (6) comprises a wireless data communication module adapted to establish wireless data communication with the electronic load (2). Mobile electricity meter tester (1) according to claim 1, characterized in that the gooseneck (3.1) comprises a base (3.3) at its one end and a double-sided adhesive on the underside of the base (3.3). Mobile electricity meter tester (1) according to claim 2, characterized in that one end of the gooseneck (3.1) is in the form of a clamp (3.5). Mobile electricity meter tester (1) according to claim 1, characterized in that the optical communication sensor (4) comprises a magnet (4.2) which can be mounted inside or on the front part of the main body of the optical communication sensor (4). Mobile electricity meter tester (1) according to claim 1, characterized in that the energy sensor (5) comprises an RS-485 port which allows a cable connection to the RS-485 output port (P) of the electricity meters (S) comprising the RS output port -485 (P). Mobile electricity meter tester (1) according to claim 1, characterized in that the energy sensor (5) comprises a warning area (5.2) which contains symbols illuminated from behind by LEDs symbolizing the status as on, off, battery, wireless connection. Mobile electricity meter tester (1) according to claim 1 or 2, characterized in that the wireless data communication module is a Bluetooth module. Mobile electricity meter tester (1) according to claim 1 or 2, characterized in that the wireless data communication module is selected from the group consisting of WiFi, GSM, GPRS, 3G and 4G modules. S K 50005-2020 Α3 Mobile electricity meter tester (1) according to claim 1, characterized in that the control unit is adapted to prepare test result reports. Mobile electricity meter tester (1) according to claim 1, characterized in that the portable terminal (6), the pulse sensor (3), the optical communication sensor (4) and the energy sensor (5) contain 5 have a charging input interface for charging the batteries therein.