KR101175529B1 - Wirness sensor for detcting applying an electric current and power failure state of distributing board - Google Patents

Abstract

PURPOSE: A wireless sensor for detecting electric currents and power failure of a distributing board is provided to facilitate the maintenance work of a distributing board by confirming the state of each component of the distributing board. CONSTITUTION: A wireless sensor for detecting electric currents and power failure of a distributing board comprises electric wires, a conversion plate, a rectification unit, a power supply unit(16), a dip switch unit(26), a temperature sensor(24), a regulator(18), an MPU(22), and wireless transmitting and receiving units. The conversion plate converts an electromagnetic field generated from the electric wire into AC voltage. The rectification unit rectifies the AC voltage into DC voltage. The temperature sensor detects the temperature of the electric wires. The regulator receives the DC voltage from the power supply unit and outputs constant voltage. The MPU outputs the sensed temperature data and overheated state data in real-time.

Description

Wireless sensor for detecting disconnection and phase loss in switchboards {Wirness sensor for detcting applying an electric current and power failure state of distributing board}

The present invention relates to a wireless sensor for detecting the disconnection and the open phase of the switchboard, and more particularly to a wireless sensor for detecting the disconnection and open phase of each phase of the conductive portion R, S, T through which the current flows.

In general, switchboards equipped with switches, instruments, relays, etc. are installed for operation or control of power plants, substations, and motors.In particular, large factories or telecommunications companies have PLC panels, high-low voltage panels, and repairs. ) Various kinds of electronic parts (hereinafter referred to as "electric appliances"), such as panels, special high power switchboards, and communication system panels, are installed in switchboards.

In addition, in the case of a switchboard that is heavily loaded, such as a high-voltage motor switchboard, heat is generated in the switchboard. When excessive heat is generated in the switchboard, it means that a large load is applied to the wire or an instability such as an excessive capacity. As it is an element, it should be checked and corrected immediately, and any abnormality in the switchboard should be corrected.

Provided to solve the above problems is a safety alarm device.

The conventional safety alarm device for switchboards provides a predetermined alarm (alarm or lighting of a lamp) when an electrical load is applied to the electrical equipment installed inside the switchboard, so that the worker can repair the switchboard. That is, the conventional safety device for switchgear provides an alarm only when a short circuit / disconnection occurs due to a high voltage applied to a wire for supplying electric power to the electrical equipment.

On the other hand, when power is supplied to the electrical equipment installed inside the switchboard, electromagnetic fields (electric and magnetic fields) are generated inside the switchboard. Therefore, the worker working in the switchboard for repair and replacement of the electrical equipment installed inside the switchboard has been exposed to the electromagnetic field inside the switchboard, so that the worker may be injured by the electromagnetic field.

In order to solve this problem, a safety alarm device such as Patent Registration No. 733612 has been developed. The safety alarm device for the switchboard includes an electromagnetic field sensor for detecting an electromagnetic field generated inside the switchboard, and the electromagnetic field sensor installed inside the switchboard. Fastening means, a fixed frame installed on the door surface of the switchboard, a control unit built in the fixed frame and electrically connected to an electromagnetic field sensor, and electrically connected to the control unit to indicate a situation inside the switchboard. LED display panel is installed in the center of the fixed frame to be notified by a combination of patterns, and a power supply terminal provided on one side of the fixed frame.

However, the conventional apparatus as described above is to detect the electromagnetic field generated inside the switchboard and to be notified through the LED display panel installed outside the switchboard, so that each phase of R, S, T of each important part of the electrical equipment of the switchboard is energized and formed. Although the state and temperature are detected, there is a problem that a malfunction occurs due to interference when communication is generated by simultaneous bundles in each of a plurality of R, S, and T, and thus, development of a wireless sensor for detecting the classification is required.

Republic of Korea Patent Registration No. 10-0733612 Name of the invention: Safety alarm device for switchboard (Notification date: 200. 06. 28)

Accordingly, it is an object of the present invention to provide a wireless sensor for detecting the disconnection and phase loss state of a switchboard for detecting the transmission and phase loss state of each of the R, S, T phases of the switchgear.

Another object of the present invention is to provide a wireless sensor for detecting the disconnection and phase loss state of the switchgear to detect the separate when the wireless communication for the energization and phase detection state is made by the simultaneous bundle on each of a plurality of R, S, T. have.

The wireless sensor for detecting the disconnection and phase-opening state of the switchboard to be applied to the present invention for achieving the above object, the wires are respectively provided on each of a plurality of R, S, T, generating an electromagnetic field when the current flows, and A voltage conversion plate for converting an electromagnetic field generated from an electric wire into an AC voltage, a rectifying unit for full-wave rectifying and outputting the AC voltage converted from the voltage conversion plate to a DC voltage, and full-wave rectifying the AC voltage converted from the voltage conversion plate. Dip for setting a power supply unit for generating a DC voltage, a charge battery for charging the DC voltage generated from the power supply unit to supply the backup power, and a unique code value for distinguishing a plurality of R, S, T phases A position sensor, a temperature sensor for detecting a temperature of the wire, and a DC voltage supplied from the power supply unit It is operated by a regulator that boosts up and outputs a constant voltage, and is supplied with power supplied from the regulator to detect energization and phase state data of each of the R, S, and T phases, and corresponds to the detected R, S, and T phases. It transmits energization and phase loss status data, and when there is a call for checking the energization and phase loss status corresponding to each phase of R, S and T from the outside, the energization and phase loss status data corresponding to each phase of R, S and T responds to it. And an MPU for outputting temperature data and superheat state data, determining an overheat state by receiving the temperature value detected by the temperature sensor, and outputting the sensed temperature data and the superheat state data in real time, and an R output from the MPU. Wireless transmission unit that wirelessly transmits electricity supply and phase loss state data and temperature data corresponding to each of S and T phases, and electricity supply corresponding to a plurality of R, S, and T phases from the outside Receives the call data for the image-forming conditions make the air characterized in that it comprises a radio receiver to pass to the MPU.

The MPU is characterized in that the temperature value detected from the temperature sensor is determined to be an overheated state where there will be a change of 5 to 10 ° C. or more within a preset time.

The wireless transmitter and the wireless receiver is characterized by using infrared communication.

The wireless transmitter and the wireless receiver are characterized in that the use of short-range wireless communication.

According to the present invention, it is possible to conveniently maintain and maintain the switchboard by detecting the state of energization and phase loss of each of the R, S, and T phases of the switchboard by a non-power supply, and then wirelessly transmitting the status to check the status of each phase of the electrical equipment of the switchboard. At the same time, there is an advantage that can prevent the occurrence of a safety accident in advance.

In addition, the present invention sets a unique code value for each of the plurality of R, S, T phase by using a dip switch to communicate with the sensor receiving repeater to display the energized and open phase and the temperature value of the plurality of R, S, T each When the communication is made in a bunch at the same time there is an advantage that can prevent the malfunction due to interference.

1 is a circuit diagram of a wireless sensor for detecting the disconnection and the open phase of the switchboard according to an embodiment of the present invention

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be understood, however, that the invention can be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. It should be noted that the embodiments of the present invention described below are only for explaining the spirit of the present invention to a person skilled in the art, and a detailed description of known functions and configurations of the present invention which may unnecessarily obscure the gist of the present invention It should be noted that it is omitted.

1 is a circuit diagram of a wireless sensor for detecting the disconnection and the open phase of the switchboard according to an embodiment of the present invention.

A wire 10 installed on each of a plurality of R, S and T angles to generate an electromagnetic field when a current flows, a voltage conversion plate 12 for converting the electromagnetic field generated from the wire 10 into an alternating voltage; A bridge diode 14 for full-wave rectifying and outputting the AC voltage converted from the voltage conversion plate 12 as a DC voltage, a capacitor C1 for smoothing and outputting the DC voltage rectified from the bridge diode 14; In addition, the resistor R1 and the capacitor C2 for stabilizing and outputting the smoothed DC voltage from the capacitor C1, and the diode D1 for passing the AC voltage converted from the voltage conversion plate 12 and preventing reverse flow. ), A power supply unit 16 for full-wave rectifying the AC voltage supplied through the diode D1 to generate a DC voltage, and a backup voltage by charging the DC voltage generated from the power supply unit 16. The rechargeable battery 20 to be supplied to the source, the dip switch unit 26 for setting a unique code value for distinguishing each of the plurality of R, S, and T phases, and the temperature of each of the plurality of R, S, and T phases A regulator 18 for receiving the DC voltage supplied from the power supply unit 16 and the charging battery 20 to boost up and outputting a constant voltage; and a power supply supplied from the regulator 18. It operates by detecting the energization and phase state data corresponding to each of the R, S, T phases, and transmit the energization and phase state data corresponding to each of the detected R, S, T phases, When there is a call for checking the energization and phase loss status corresponding to each of the phases S and T, the energized and missing state data, the temperature data and the superheat state data corresponding to each of the phases R, S and T corresponding to the phase are output. Corresponds to the R, S, and T phases detected from the sensor 24 The MPU 22 receives the temperature value and determines the overheat state and outputs the temperature data and the overheat state data in real time, and the energized and missing states corresponding to each of R, S and T phases output from the MPU 22. Infrared transmission unit 28 for transmitting data and temperature data wirelessly, and call data for confirming the energization and phase state corresponding to each of the R, S, and T phases from the outside to the MPU 22 wirelessly. It consists of an infrared receiver 30 for transmitting.

The bridge diode 14, the capacitor C1, the resistor R1, and the capacitor C2 become rectifiers.

With reference to FIG. 1 described above, sensing and transmitting current and phase state data and temperature data of R, S, and T phases of a switchboard according to an embodiment of the present invention, and detecting an overheat state of each of the R, S, and T phases of a switchboard. The operation of the wireless sensor to transmit will be described in detail.

The wire 10 is installed on each of a plurality of R, S, and T sides of the switchboard, and an electric field is generated when current flows. The voltage conversion plate 12 converts the electromagnetic field generated from the wire 10 into an AC voltage and outputs the alternating voltage. The bridge diode 14 full-wave rectifies the AC voltage converted from the voltage conversion plate 12 and outputs the DC voltage. The capacitor C1 smoothes and outputs the DC voltage rectified by the bridge diode 14. The DC voltage smoothed from the capacitor C1 is applied to the MPU 22 at a stable voltage through the resistor R1 and the capacitor C2.

The AC voltage converted from the voltage conversion plate 12 is applied to the power supply unit 16 through the diode D1. The power supply unit 16 generates and outputs a DC voltage by full-wave rectifying the AC voltage supplied through the diode D1. The charging battery 20 charges the DC voltage generated from the power supply unit 16 and supplies it to the backup power. That is, when the power supply of the switchboard is disconnected and no current flows in the R, S, and T phases, the rechargeable battery 20 supplies the backup power when the power is not supplied from the power supply unit 16 to supply the backup power. The operating power of the MPU 22 is supplied. The regulator 18 receives a DC voltage supplied from the power supply unit 16 or the charging battery 20 to boost up to output a constant voltage to supply operating power of the MPU 22. The DC voltage supplied from the power supply unit 16 or the rechargeable battery 20 uses, for example, 3.7V, but the voltage may be changed according to the type and shape of the MPU 22. The regulator 18 is boosted by receiving a 3.7V DC voltage to generate a stable DC voltage of 5V and is supplied to the operating power of the MPU 22. However, the supply voltage is variable depending on the type or form of the MPU 22. It is possible. The dip switch unit 26 is composed of a plurality of dip switches, respectively, to set unique code values for distinguishing a plurality of R, S, and T phases. That is, the dip switch unit 26 is intended to prevent data interference by setting a unique number because data interference occurs when signals are simultaneously transmitted on R, S, and T bundles of the wires 10 through which electricity flows in the switchboard. . The temperature sensor 24 is provided for each wire 10 of each of the R, S, and T phases, and detects and transmits the temperature of each of the R, S, and T phases to the MPU 22.

The MPU 22 is operated by the power supplied from the regulator 18 and is energized in each of the R, S, and T phases according to the presence or absence of DC power supplied full-wave rectified through the bridge diode 14 and the capacitor C1. And imaging state data are detected. That is, when the DC power supplied full-wave rectified through the bridge diode 14 and the capacitor C1 is supplied, the MPU 22 determines that the energized state of each of the R, S, and T phases is supplied, and the bridge diode 14 and the capacitor ( If the DC power supply rectified through C1) is not supplied, it is determined that the phases of the R, S, and T phases are phased and outputs the energized and phased state data of the detected R, S, and T phases. In addition, the MPU 22 outputs a temperature value corresponding to each of the R, S, and T phases detected by the temperature sensor 24 in real time, and sets a temperature value corresponding to each of the plurality of R, S, and T phases. For example, when there is a change in the temperature of 5 to 10 ° C., it is determined to be overheated, and the overheated state is transmitted to the sensor receiving repeater installed at a remote location not shown through the infrared transmitter 28. At this time, the infrared transmitter 28 wirelessly transmits the energized and defrosted state data, the temperature data, and the overheated state data corresponding to each of the R, S, and T phases output from the MPU 22. When the energization and imaging state data and the temperature data corresponding to each of the R, S, and T phases are wirelessly transmitted through the infrared transmitter 28, in the sensor receiving repeater installed at a remote location not shown, the energization of each of the R, S, and T phases is performed. And phase data and temperature data. However, when the energized and defrosted state data, the temperature data, and the superheated state data corresponding to each of the plurality of R, S, and T phases are simultaneously transmitted, data interference occurs and an error occurs. Therefore, in the sensor receiving relay, a plurality of R, S, T Call each wireless sensor that is set as unique code value to distinguish each phase and check and display the energization and phase disconnection status, temperature data and overheating status of each phase. When the sensor receiving repeater calls a wireless sensor with a specific unique code value one by one, the infrared receiver 30 wirelessly receives the call signal and transmits it to the MPU 22, and the MPU 22 calls its own unique code. If it is determined whether its own code value is called, it transmits the temperature data or the energization and the image state data required by the sensor reception relay through the infrared transmitter 28. Then, the sensor receiving relay calls each wireless sensor that is set as a unique code value to distinguish each of the plurality of R, S, and T phases, so that the energized and missing states and temperature values corresponding to each of the R, S, and T phases can be precisely determined. Display.

According to an embodiment of the present invention, the infrared transmitter and the infrared receiver communicate with the sensor receiver repeater to transmit and receive temperature data or energization and phase image data of each of a plurality of R, S, and T, but is a short-range wireless communication network such as Bluetooth. It is also possible to communicate wirelessly using RF data.

In the exemplary embodiment of the present invention, the charging power of the charging battery 20 is received from the power supply unit 16 to be charged, but the charging battery may be charged using a charger as a general commercial power source.

Although the present invention has been described in detail only with respect to the specific examples described, it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the technical spirit of the present invention. It is obvious that modifications and variations belong to the appended claims.

10: wire 12: voltage conversion plate
14: bridge diode 16: power supply
18: Regulator 20: Rechargeable Battery
22: MPU 24: temperature sensor
26: dip switch unit 28: infrared transmitter
30: infrared receiver

Claims (5)

In the wireless sensor for detecting the disconnection and the phase of the switchgear,
Wires respectively installed on a plurality of R, S and T angles to generate an electromagnetic field when current flows,
A voltage conversion plate for converting the electromagnetic field generated from the wire into an AC voltage;
A rectifier for full-wave rectifying the AC voltage converted from the voltage conversion plate and outputting the DC voltage;
A power supply unit for full-wave rectifying the AC voltage converted from the voltage conversion plate to generate a DC voltage;
A dip switch unit for setting a unique code value for distinguishing each of a plurality of R, S, and T phases;
A temperature sensor detecting a temperature of the wire;
A regulator for receiving a DC voltage supplied from the power supply unit and boosting it up to output a constant voltage;
It is operated by the power supplied from the regulator to detect the energization and phase state data of each of the R, S, T phases, and transmit the energization and phase state data corresponding to each of the detected R, S, T phases, When there is a call for checking the energization and phase loss status of each phase of R, S, and T, the energized and missing state data, temperature data, and superheat state data corresponding to each phase of R, S, and T will be output. MPU for determining an overheat state by receiving the temperature value detected by the temperature sensor and outputting the detected temperature data and the overheat state data in real time;
A wireless transmitter which wirelessly transmits energization and phase image state data and temperature data corresponding to each of R, S, and T phases output from the MPU;
Detects disconnection and phase disconnection state of the switchboard, characterized in that it comprises a wireless receiving unit for wirelessly receiving the call data for checking the energization and phase state corresponding to each of a plurality of R, S, T phase from the outside to the MPU Wireless sensor.
The method according to claim 1,
The MPU detects the power cut and disconnection state of the switchgear, characterized in that the temperature value detected from the temperature sensor is determined to be an overheated state that will be changed by more than 5 ~ 10 ℃ within a predetermined time.
The method according to claim 2,
The wireless sensor for detecting the power cut and disconnection state of the switchboard, characterized in that the wireless transmitter and the wireless receiver uses infrared communication.
The method according to claim 2,
The wireless sensor for detecting the disconnection and phase loss state of the switchboard, characterized in that the wireless transmitter and the wireless receiver uses a short-range wireless communication.
The method according to claim 1,
And a charging battery for charging the DC voltage generated from the power supply unit and supplying backup power to the regulator.

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