KR20050028383A - Alarm apparatus for used with switch board - Google Patents

Abstract

An alarm apparatus used for a switch board is provided to sense whether a front door and a rear panel of a switch board are open/closed while sensing operated states of various circuit breakers, and to inform a repair person or a remote operator of the sensed results through voices or alarming sounds, thereby reducing a risk of accidents. A switch unit(210) generates a high signal or a low signal according to an open state or a closed state of a front door or a rear panel, and transmits the generated signal. An input unit(220) receives the transmitted signal to send the received signal. A microprocessor(230) analyzes the high signal or the low signal to confirm whether the front door or the rear panel is open or closed, and generates a control signal corresponding to the open state of the front door or the rear panel, then transmits the control signal. A sound IC(260) extracts a specific one of stored sound data according to the control signal, converts the extracted data into a sound signal, and transmits the sound signal. A speaker(280) receives the sound signal, and outputs an alarm sound to a work place.

Description

Alarm App for Switchboards {Alarm Apparatus for Used with Switch Board}

The present invention relates to an alarm device for use in a switchboard. More specifically, in order to prevent safety accidents that may occur when the operator maintains or operates the switchboard, whether the front door and the rear panel of the switchboard are opened or closed, and the operation state of the built-in circuit breakers, etc. The present invention relates to an alarm device used for a switchboard that senses whether a switchboard work can be performed, a name of a target device, and pre-work checks by a voice or an alarm sound to a service operator or a remote operator.

Switch boards are equipment installed in facilities such as power plants, substations, and large buildings that are equipped with electrical facilities, and facilitate the opening and closing of converters and controlling devices. In general, switchboards are equipment in which various circuit breakers and relays such as a main circuit breaker, a circuit breaker, and an earth leakage breaker are installed in a base panel, and each circuit breaker and a relay are electrically connected to each other. The switchboard has a function of distributing power supplied from the outside to a plurality of connected lower devices and simultaneously opening and closing the power supply.

1 is a front view showing the internal configuration of the front door of the general switchboard open state.

In general, a switchboard used to supply power to each load device or perform control of each device in a factory or the like is an abnormal voltage or abnormal current of the degeneration facility or each device in the cubicle 110 as shown in FIG. 1. Sensing equipment and circuit breakers, relays, inlet and switch, terminals, insulators, etc., are installed. Here, the cubicle 110 is also referred to as a metal clad or closed switchboard, and is surrounded by a metal plate or a wire mesh, and is generally rectangular in shape.

On the other hand, one side of the front door 120 of the cubicle 110 is equipped with an alarm device 130 for notifying the abnormal state of each device. A buzzer or a lamp is mainly used as the alarm device 130, and is connected through various relays and wires 150 installed in the cubicle 110. In addition, a tray 160 for accommodating the wires 150 is installed on the inner surfaces of the cubicle 110 and the front door 120. Therefore, the supervisor who manages the switchboard checks the label sticker 140 in which each alarm device 130 of the cubicle 110 and the device name corresponding to the alarm device 130 are described to identify a device in which a failure occurs. You can check it.

However, in the conventional switchgear system, there is no device that detects and informs the operation state of the switchgear or the risk of an electric shock accident. Thus, a mechanic who maintains a faulty switchgear or performs routine checks is exposed to a risk of a safety accident. In other words, the switchboard performs the function of receiving and distributing high voltage and special high voltage, so that high voltage is continuously applied inside, and there is a risk of current leakage, so the built-in circuit breaker operates to block the flow of current. In addition, high voltage remains in the rear panel or inside the booth. Here, the rear panel is provided in the case of an open switchboard.

Therefore, when an operator does not know exactly the operating state of the switchboard, safety accidents, such as an electric shock, often occur when the switchboard is maintained or a routine inspection is performed alone. Moreover, the probability of a safety accident occurring is increased when the front door of the switchboard is open. In addition, when inspecting the rear panel, unlike the front door, there is no label sticker corresponding to the alarm device, and there is a case of incorrectly recognizing a target device, which causes a lot of safety accidents.

In order to solve the above problems, the present invention is to open or close the front door and the rear panel of the switchboard and the operating state of the various circuit breakers, etc., in order to prevent safety accidents that may occur when the operator maintains or operates the switchboard. The purpose of the present invention is to provide an alarm device for a switchboard that detects whether the switchboard can be performed, the name of the equipment to be worked on, the pre-operation checks, etc. to the operator or the remote operator by voice or alarm sound.

To this end, the present invention is an alarm device used for a switchboard that outputs one or more sounds for each situation depending on whether the front door or the rear panel of the switchboard is open, the high signal according to the open or closed state of the front door or the rear panel. A switch unit generating and transmitting a narrow signal; An input unit configured to receive and transmit the high signal or the low signal; A microprocessor that checks whether the front door or the rear panel is opened or closed by analyzing the received high signal or the low signal, and generates and transmits a control signal corresponding to an open state of the front door or the rear panel; A sound IC which extracts corresponding specific sound data from one or more sound data stored according to the control signal to be received, and converts the sound data into a sound signal; And a speaker for receiving the sound signal and outputting an alarm sound to a work site.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are used as much as possible even if displayed on different drawings. In addition, in describing the present invention, when it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

2 is a block diagram schematically showing the internal configuration of the alarm panel 200 for a switchboard according to a preferred embodiment of the present invention.

The switchboard alarm device 200 according to an exemplary embodiment of the present invention includes a switch unit 210, an inverter 212, an input unit 220, a rectifier element 222, a microprocessor 230, and a power supply unit 240. ), A warning light 250, an acoustic integrated circuit (IC) 260, an amplifier 270, a speaker 280, a UART chip 290, a serial communication interface 292, and the like.

The switch unit 210 represents a contact state between the front door, the rear panel, various circuit breakers, call buttons, various voltage devices, and the like provided in the switchboard. That is, the switch unit 210 of FIG. 2 shows a state in which the front door and the rear panel are opened, a state in which the breaker is in operation, a state in which the call button is not pressed, and a state in which various voltage devices normally operate. Here, a variety of voltage equipment is a device that operates under the AC power supply and is likely to cause overcurrent, discharge, ground fault, and misoperation of maintenance workers.

In the state in which the switch of the switch unit 210 is opened as shown in FIG. 2, a low signal is output from each switch. On the other hand, when the front door and the rear panel is closed, the breaker state of the breaker, the state of the call button is pressed, and an abnormal state occurs in various voltage devices, each switch of the switch unit 210 is closed, so a high signal Is output.

The inverter 212 is connected to the switches of the front door part and the rear panel part among the plurality of switches constituting the switch part 210. That is, in the switchboard, a state in which the front door or the rear panel is open, that is, the state in which the corresponding switch is open, is dangerous. However, since the low signal is output when the switch is open, the inverter 212 is inverted to a high signal for the operation of the microprocessor 230.

On the other hand, when a breaker state of a breaker, a call operation state of a call button, or an abnormal state occurs in a voltage device, each switch is pressed and a high signal or an AC signal is output, so that an inverter is not necessary.

The input unit 220 performs a function of transferring the input signal input from the switch unit 210 to the microprocessor 230 directly or through a predetermined signal conversion process. That is, the input unit 220 directly transmits a high signal or a low signal input from a front door, a rear panel, various breakers, a call button, and the like to the microprocessor 230 without undergoing a signal conversion process. However, the AC signal input from various voltage devices or the like is converted into a DC signal of about 6 V to 12 V using the rectifying element 222 and transmitted to the microprocessor 230.

Meanwhile, the input unit 220 allocates a predetermined identification code to the microprocessor 230 for the high signal, the low signal, and the AC signal input from each switch of the switch unit 210. That is, when an input signal is input from the switch by recognizing an identification code assigned to each input line input to the input unit 220, the corresponding identification code is assigned to the input signal. In this way, if each identification code is assigned to each electronic device, front door, rear panel, breaker, call button, or voltage device constituting the switchboard, voice messages are used for the device name of the device or accessory such as a dangerous state or a maintenance request state. Notify the mechanic to have the effect to prevent the misoperation of the mechanic.

The microprocessor 230 receives the high signal, the low signal, and the direct current signal from the input unit 220, and when it is determined that the output of voice or siren sound or the blinking of the warning lamp 250 is required, the microprocessor 230 sends the signal to the acoustic IC 260. Deliver control signals. In this case, when the output of the sound or the flashing of the warning light 250 is required, the front door or the rear panel is opened, the call button is pressed, and the like. The microprocessor 230 controls the overall function of the alarm panel 200 for the switchboard according to the embodiment of the present invention.

The power supply unit 240 is a portion that performs a function of supplying power for the operation of the switchboard alarm device 200, and may have a structure in which a portable battery is mounted to supply power.

The warning lamp 250 repeatedly performs flashing under the control of the microprocessor 230 when the front door or the rear panel of the switchboard is opened, or the breaker is switched to a blocking state or an abnormal state occurs in the voltage device.

The acoustic IC 260 outputs a specific acoustic signal to the amplifier 270 under the control of the microprocessor 230. That is, the acoustic IC 260 according to the embodiment of the present invention stores sound data classified according to a predetermined identification code for various states. Therefore, the acoustic IC 260 recognizes the identification code included in the control signal received from the microprocessor 230, extracts the acoustic data corresponding to the recognized identification code, converts the extracted acoustic data into a voice signal, and then amplifies the amplifier. Forward to 270. Here, when it is determined that the call button is pressed and input as a result of analysis of the identification code included in the control signal received from the microprocessor 230, the acoustic IC 260 sends the corresponding voice signal to the serial communication interface unit 292. To pass.

That is, the acoustic data stored in the acoustic IC 260 stores different acoustic data depending on whether an operation state of a circuit breaker, an abnormal state of various voltage devices occurs, and whether a call button is pressed when the front door or the rear door is opened.

For example, when the front door of the switchboard is opened while the breaker is in operation, voice data and siren sound data such as "Current breaker for multiple pumps is in operation, please stop work." High voltage flows through the switchboard during the operation of the breaker, it is preferable to instruct the operator to stop work.

On the other hand, if the front door of the switchboard is opened during the breaker state of the breaker, voice data such as "Check the charging before starting work and start work if it is safe" may be stored. When the breaker is switched to the cut-off state, high voltage does not flow to the front door side, but the work is possible, but for safety, it may be desirable to work after switching the breaker, the disconnector, or the like to a non-voltage state.

On the other hand, when the rear panel is opened without powering the switchboard and switching to no voltage, voice data and siren sound data such as "This device is a breaker for multiple pumps. Can be stored. Even when the circuit breaker is blocked, it is preferable to instruct to stop work on the rear panel because a high voltage is applied to the rear panel side primary booth.

On the other hand, when a maintenance serviceman of a switchboard presses a call button to call an operation unit or an operation unit of a switchboard, voice data such as "Switchboard operator or worker, please come to a multiple pump breaker" may be stored. .

The amplifier 270 amplifies the sound signal output from the sound IC 260 to a predetermined level and outputs the sound signal to the outside through the speaker 280. The amplifier 270 may be configured as an op amp.

The universal asynchronous receiver / transmitter (UART) chip 290 serially inputs a parallel bit string input to transmit data moving along parallel circuits on a circuit board of the switchboard alarm device 200 to the serial device. Converts to bit string. That is, the UART chip 290 converts a switchboard operating state consisting of parallel bit strings input from the microprocessor 230 into acoustic signals of serial bit strings, and transmits them to the serial communication interface unit 292.

The serial communication interface 292 transmits a control signal received from the UART chip 290 to the switchboard main control device 294 installed in a remote location through a serial cable connected in a serial communication method. The switchboard main control device 294 outputs an audio signal to the outside in accordance with a control signal received from the serial communication interface 292.

Meanwhile, the serial communication interface unit 292 according to the embodiment of the present invention may include a modem, a LAN (Local Area Network), a RS (Recommended Standard) -232C, RS-422, RS-485, and USB (Universal). Serial Bus), an interface that supports X.25 communication methods. Accordingly, the serial communication interface 292 of the switchboard alarm device 200 stores one or more serial communication ports and serial communication protocols to support various serial communication methods. Each serial communication port converts the serial bit string received from the UART chip 290 into a serial bit string having a constant voltage level of ± to transmit the serial pulse signal string to the switchboard main control unit 294 through the serial cable.

3 is a block diagram schematically illustrating an internal configuration of a main switchboard control device 294 according to an embodiment of the present invention.

The switchboard main control device 294 is a type of broadcasting device that is remotely installed from a site where a plurality of electrical switchboards are installed and receives a series of pulse signal strings transmitted from each electrical switchboard and outputs an alarm sound. The internal configuration of the switchboard main control device 294 includes a serial communication interface 310, a microprocessor 320, a power supply 330, an acoustic IC 340, an amplifier 350, a speaker 360, and the like. It is configured by.

The serial communication interface 310 receives a control signal transmitted through serial communication from each switchboard alarm device 200 installed in the field and transmits the control signal to the microprocessor 320.

The microprocessor 320 receives and analyzes at least one control signal transmitted from each switchboard alarm device 200 through the serial communication interface 310 to check the name of the switchboard to which the received control signal is transmitted and the like. This function controls the audio output to the outside.

The power supply unit 330 performs a power supply function for driving the switchboard main control device 294, and the sound IC 340 stores sound data similarly to the sound IC 260 of the switchboard alarm device 200. Extracts the corresponding sound data according to the control signal transmitted from the microprocessor 320 and delivers it to the amplifier 350.

The amplifier 350 amplifies the sound signal recorded with the acoustic data received from the acoustic IC 340 to a predetermined level or more, and transmits the sound signal to the speaker 360, and the speaker 360 receives the sound received from the amplifier 350. Function to output the signal to the outside. In addition, the beacon 370 also receives a control signal from the microprocessor 320 and periodically repeats the flashing operation to inform that there is a call request from the switchboard in the field.

The above description is merely illustrative of the present invention, and those skilled in the art to which the present invention pertains may various modifications without departing from the essential characteristics of the present invention. Accordingly, the embodiments disclosed herein are not intended to limit the present invention but to describe the present invention, and the spirit and scope of the present invention are not limited by these embodiments. It is intended that the scope of the invention be interpreted by the following claims, and that all descriptions within the scope equivalent thereto shall be construed as being included in the scope of the present invention.

As described above, the conventional switchgear has a safety accident frequently occurs because there is no device for monitoring the operating state, the open state of the front door and the rear panel to inform the maintenance, etc., according to the present invention, the front door and the rear panel of the switchboard When open, multiple voice messages or sirens are output according to the operating state of the switchboard, which gives an alarm to the maintenance personnel, thereby greatly reducing the occurrence of safety accidents.

In addition, when operation is required during the maintenance of the switchboard or after the maintenance of the switchboard, and a call of the switchboard worker such as the operation department is required, pressing the call button provided on the switchboard alarm device causes a call voice message of the worker through the switchboard main control device. There is an advantage to improve the operation reliability of the switchboard through the close cooperation between the switchboard maintenance and workers by broadcasting.

1 is a front view showing the internal configuration of the front door of the general switchboard open state,

2 is a block diagram briefly showing an internal configuration of an alarm system for a switchboard according to a preferred embodiment of the present invention;

3 is a block diagram schematically illustrating an internal configuration of a main switchgear control apparatus according to an embodiment of the present invention.

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

110: cubicle 120: front door

130: alarm device 140: label sticker

160: tray 200: switchboard alarm device

210: switch unit 212: inverter

220: input unit 222: rectifier element

230, 320: microprocessor 240, 330: power supply

250: warning lights 260, 340: sound IC

270, 350: amplifier 280, 360: speaker

290: UART chip 292, 310: serial communication interface

294: switchboard main control unit

Claims (18)

An alarm device used for a switchboard that outputs one or more sounds for each situation depending on whether a front door or a rear panel of the switchboard is open. A switch unit configured to generate and transmit a high signal or a low signal according to an open state or a closed state of the front door or the rear panel; An input unit configured to receive and transmit the high signal or the low signal; A microprocessor that checks whether the front door or the rear panel is opened or closed by analyzing the received high signal or the low signal, and generates and transmits a control signal corresponding to an open state of the front door or the rear panel; An acoustic integrated circuit (IC) for extracting corresponding specific acoustic data from among one or more acoustic data stored according to the received control signal, converting the specific acoustic data, and converting the acoustic data into an acoustic signal; And Speaker that receives the sound signal and outputs an alarm voice to the work site Alarm device used in the switchboard comprising a. The method of claim 1, The switch unit is connected to one or more breakers, the alarm device used in the switchboard, characterized in that for generating and transmitting a high signal or a low signal according to the operation state or the blocking state of each of the breakers. The method of claim 1, The switch unit is connected to one or more voltage devices, the alarm device used in the switchboard, characterized in that for receiving and transmitting an alternating current from each of the voltage devices. The method of claim 1, The switch unit is connected to the call button, the alarm device used in the switchboard, characterized in that for receiving and transmitting a high signal when the call button is pressed. The method of claim 1, And the high signal is output when the front door or the rear panel is closed and the low signal is output when the front door or the rear panel is open. The method of claim 5, wherein An inverter is connected to a switch terminal indicating an open state or a closed state of the front door and the rear panel, and the low signal is a high signal when the front door or the rear panel is opened. And a high signal in a closed state of the front door or the rear panel to a low signal and transmitting the high signal to the input unit. The method according to claim 1 or 3, And the input unit comprises a rectifying element or a rectifying circuit for converting the alternating current into a direct current having a voltage of a predetermined level. The method according to any one of claims 1 to 4, The input unit identifies for identifying a specific device that transmits the high signal, the low signal, or the AC signal through the switch unit among the front door, the rear panel, the breaker, the call button, and each of the voltage devices. And transmitting the information to the high signal, the low signal, or the alternating current signal. The method of claim 8, The microprocessor analyzes the identification information included in the high signal, the low signal, or the AC signal received from the input unit, and determines an abnormal state type according to one or more devices in which an abnormal state occurs. Alarm device used. The method of claim 9, The abnormal state is one or more of a state in which the front door or the rear panel is open, the circuit breaker is cut off, the call button is pressed, and the state in which excessive alternating current is output from one or more voltage devices. Alarm device. The method according to claim 1 or 10, When the front door or the rear panel is open, the microprocessor generates a specific control signal set according to an operation state of the circuit breaker and whether an abnormal state of each of the voltage devices occurs, and transmits the specific control signal to the acoustic IC. Alarm device used for the switchboard characterized in that. The method of claim 11, The acoustic IC receives and analyzes the control signal, and when it is determined that the control signal is a signal indicative of output of a voice message and / or sound, extracts a corresponding specific sound data from among built-in sound data and converts the sound signal into an acoustic signal. Alarm device used in the switchboard, characterized in that output through the speaker. The method of claim 12, The alarm device further comprises an amplifier for amplifying the sound signal output from the sound IC to have a predetermined level and output through the speaker. The method according to claim 1 or 4, The alarm device further comprises a serial communication interface for transmitting a control signal received from the microprocessor to an external switchboard main control device 294 connected via a serial communication method when the call button is pressed. Alarm device used for switchboard. The method of claim 14, The serial communication interface supports modem, LAN (Local Area Network), RS (Recommended Standard) -232C, RS-422, RS-485, Universal Serial Bus (USB) and X.25 communication methods. Alarm device used in a switchboard, characterized in that at least one of the interfaces. The method of claim 14, The alarm device includes a UART (Universal Asynchronous Receiver / Transmitter) chip for converting a control signal consisting of a parallel bit string output from the microprocessor into a serial bit string voice signal between the microprocessor and the serial communication interface. Alarm device used for the switchboard characterized in that. The method according to any one of claims 1 to 3, The alarm device further comprises a flashing light periodically flashing to indicate that the front door and / or the rear panel are open, one or more of the circuit breakers are shut off, or that an abnormal condition has occurred in one or more of the voltage devices. Alarm device used for the switchboard characterized in that. The method of claim 1, The alarm device further comprises a power supply unit for mounting a portable battery (Battery) as a power supply means for driving and operation of the alarm device used in the switchboard.