KR102053124B1 - High-voltage electrical safety signs - Google Patents

Abstract

The present invention relates to a high voltage safety sign capable of turning on an LED of a high voltage safety sign without consuming power in an opened power line and checking a position of a power line with a high voltage even at night when there is no luminance around to prevent accident in advance by obtaining power needed for charging an electrolytic condenser and flashing an LED of a safety sign since operations for storing electric charges in a copper plate coated on a PCB when a voltage of a power supply line or overhead electric line with a high voltage rises and moving electric charges stored in a copper plate in a direction to a power supply line or overhead electric line when a voltage of a power supply line or overhead electric line with a high voltage drops are repeated.

Description

High Voltage Electrical Safety Signs {HIGH-VOLTAGE ELECTRICAL SAFETY SIGNS}

The present invention relates to a high-voltage electrical safety sign, and to a high-voltage electrical safety sign that can effectively recognize the danger of the high-voltage wire by hanging the LED on the high-voltage power supply line or overhead line such as subway.

High voltage current of 22,900V flows in power supply line or overhead line of subway or tram line. Power supply lines carrying such high voltage currents are extremely dangerous, so it is necessary to be able to easily recognize the danger of high voltage electricity at all times during the day and night.

In general, electrical hazard safety signs suspended from power supply lines or overhead lines have the same information as "high voltage electrical hazards." This is a fact that can be identified during the day, but it does not emit light itself, which is a fact that when working near the subway or tram line at night, there are many risks. Therefore, safety signs that can identify the danger of high voltage electricity during the day as well as the night should be made. In order to do this, a light source must be supplied to emit light at night due to the characteristics of safety signs.

Meanwhile, the conventional safety signs are used as daytime identification means by coloring letters such as 'high voltage electric hazard' in a predetermined color, and using them as nighttime identification means, using batteries and light emitting elements, and solar cells and light emitting elements. And the like are generally used.

However, the method of using the battery and the light emitting device is inconvenient to replace the battery, and accordingly maintenance is expensive.

Utility Model Registration No. 20-0241634 Patent Publication No. 10-2017-0005659

The present invention has been invented to improve the above problems, without the need for batteries or photovoltaic modules to obtain power through the electric charge induced by the electric field of the high-voltage power supply line or overhead line, and using the obtained power By flashing the LED on the safety sign, it is possible to provide a high voltage electrical safety sign that can be used semi-permanently and has a considerably low maintenance cost.

In order to achieve the above object, the high-voltage electrical safety sign according to the present invention, a high-voltage power supply line or a conductive high-voltage connection line for hanging on a high-voltage power supply line or overhead line for generating an electric field, a constant voltage in the high-voltage power supply line or overhead line Is detected and the DC power supply for charging the LED to the capacitor (C1) to obtain the power required to drive the LED and the voltage charged in the capacitor (C1) exceeds the predetermined breakdown voltage set to the zener diode When the SCR (Q2) is switched to the conduction state and the specified current flows, the LED is turned on. When the voltage charged in the capacitor (C1) falls and the current flows lightly through the LED, the SCR (Q2) is switched to the blocking state and the current is turned on. And a current controller for shutting off and turning off the LED.

In addition, the DC power generating unit is a bridge diode (BD) for rectifying and outputting the AC input voltage generated in the high-voltage power supply line or overhead line to DC, one end (+) of the bridge diode (BD) for LED lighting When the voltage of the capacitor (C1) and the high-voltage power supply line or overhead line increases to charge the DC power, the voltage rises through the bridge diode (BD) and the capacitor (C1), and is located between two PCBs. When the charge is stored due to the polarization phenomenon in the acrylic, the charge is stored, and when the voltage of the high-voltage power supply line or the overhead line falls, the pre-stored charge passes through the bridge diode (BD) and the capacitor (C1) and the high-voltage power supply line Or it characterized in that it comprises a copper plate applied to the PCB moving to the overhead line.

In addition, while the voltage of the high-voltage power supply line or overhead line increases and decreases repeatedly, the capacitor C1 is charged to obtain power required for LED lighting.

Specifically, the high-voltage power supply line or the overhead line is L phase (live line), the copper plate applied to the PCB is N phase (neutral wire), and when the voltage of the L phase rises, the charge is stored in the copper plate coated on the N phase PCB If the voltage of the L phase falls, the electric current flows while the charge stored in the copper plate of the N phase moves to the high-voltage power supply line or overhead line of the L phase that is falling to a lower voltage than the N phase, and the voltage rise and fall as described above is repeated. When the power required for LED lighting is characterized in that the capacitor (C1) is charged.

On the other hand, the current control unit is provided in the zener diode having a predetermined breakdown voltage, the current control TR (Q1) provided at the current input terminal of the LED and the current output terminal of the LED, the operation voltage to the gate by the operation of the zener diode It is characterized in that it comprises an SCR (Q2) is applied and conductive, and cut off when the voltage drops.

Specifically, the current control unit is provided at the current output terminal of the LED, the conductive voltage is applied to the SCR (Q2) is conducted and when the LED is turned on, the voltage at both ends is switched to 0 V, the voltage of the cone sensor (C1) When the current flows weakly from the LED, the charge is charged to drop below the conduction current of the SCR Q2 so that the SCR Q2 is switched to the blocking state, and further includes a capacitor C2 to turn off the LED. It features.

According to the present invention having the above configuration, the following effects can be achieved.

First of all, semi-permanent use is possible by flashing the word 'high voltage electric danger' displayed on safety signs by using high voltage power supply line of subway or tram line or electric field of overhead line without the need of battery or solar module. The cost is low.

Specifically, when the voltage of the high-voltage power supply line or overhead line rises, the charge is stored in the copper plate applied to the PCB, and when the voltage of the high-voltage power supply line or overhead line falls, the charge stored in the copper plate is transferred to the power supply line or overhead line. As the movement in the direction is repeated, the electrolytic capacitor can be charged to obtain the power required to blink the LED of the safety sign.

In addition, it can be installed in a simple way to hang the high voltage cable connection to the high-voltage power supply line or overhead line, it is convenient and easy to replace.

In addition, by lighting the LED of the high-voltage electrical safety signs without consuming power in the open power line, it is possible to prevent the accident by checking the position of the high-voltage power line even at night when there is no ambient light.

1 is a block diagram of a high-voltage electrical safety sign according to the present invention
2 is a circuit diagram of a high-voltage electrical safety sign according to the invention
Figure 3 is an illustration of a high-voltage electrical safety sign according to the invention
4 is a cross-sectional view of a high-voltage electrical safety sign according to the invention
5 is a flowchart illustrating a method of operating a high-voltage electrical safety sign according to the present invention.

Advantages and features of the present invention, and methods for achieving them will be apparent with reference to the embodiments described below in detail with reference to the accompanying drawings.

However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms.

In this specification, the embodiments are provided so that the disclosure of the present invention may be completed and the scope of the present invention may be completely provided to those skilled in the art.

And the present invention is only defined by the scope of the claims.

Thus, in some embodiments, well known components, well known operations, and well known techniques are not described in detail in order to avoid obscuring the present invention.

In addition, the same reference numerals throughout the specification refer to the same components, and the terminology (discussed) used herein is for the purpose of describing the embodiments are not intended to limit the invention.

As used herein, the singular forms "a", "an" and "the" include plural unless the context clearly dictates otherwise, and the elements and acts referred to as 'comprises' or 'do' not exclude the presence or addition of one or more other components and acts. .

Unless otherwise defined, all terms (including technical and scientific terms) used in the present specification may be used in a sense that can be commonly understood by those skilled in the art.

In addition, the terms defined in the commonly used dictionary are not ideally or excessively interpreted unless they are defined.

Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment of the present invention.

1 to 5, the high-voltage electrical safety sign 100 according to the present invention includes a high voltage line connecting unit 110, a DC power generating unit 120, a current control unit 130, and an LED 140.

AC power of 22,900V is supplied between power supply line of overhead train or overhead line and rail which is grounded to earth. The present invention relates to a high-voltage electrical safety sign 100 which is mounted on an open power source (power supply line) rather than a closed circuit between the power supply line and the rail. To do this, we look at the specific configuration.

The high voltage line connection unit 110 is a conductive fastening member for hanging on a high voltage power supply line or overhead line 10 that generates an electric field. The worker can easily install the iron or steel conductive hook hanging on the power supply line or the processing line 10, and can be easily replaced even during replacement.

There is a certain electric field in the power supply line of AC 22,900V and in the air to obtain power.

The DC power generator 120 detects a predetermined voltage from the high-voltage power supply line or the overhead line 10, and charges the DC power for LED lighting to the capacitor C1 to obtain power for driving the LED.

In detail, the DC power generator 120 includes a bridge diode BD, a capacitor C1, and a copper plate N.

The bridge diode BD rectifies and outputs an AC input voltage generated by a high voltage power supply line or overhead line 10 to DC.

The capacitor C1 is provided at one end (+) of the bridge diode BD to charge a DC power supply for LED lighting.

Here, the configuration of the safety sign plate 100 with reference to FIGS. 3 and 4 will be described in detail.

Safety sign plate 100 of the present invention is composed of a double-sided type. Referring to Figure 4, 1 to 3 is the configuration of the front, 4 to 6 is the configuration of the rear. Copper plate 1, 6 PCB is obtained by routing the electrical hazards and lightning table of Figure 3, the special high-pressure silk printing, the remainder is formed of copper plate. 3 and 4 (front and back PCB) are double-sided PCBs that represent electrical hazards and lightning tables with LEDs, and the remainder is formed with copper plates. 2 and 5 are made of transparent acrylic of 1 T thickness.

Copper plate (1, 3, 4, 6) applied to the PCB is the voltage rises through the bridge diode (BD) and the capacitor (C1) when the voltage of the high-voltage power supply line or overhead line 10 rises, two PCBs Polarized phenomena are stored in the acryl (between 1 and 3, 4 and 5) (5 between 2, 4 and 6, located between 1 and 3) and store charges as a result of polarization. When the voltage of the furnace 10 drops, the pre-stored charge moves to the high-voltage power supply line or the overhead line 10 through the bridge diode BD and the capacitor C1.

While the voltage of the high-voltage power supply line or overhead line 10 rises and falls repeatedly, the capacitor C1 is charged to obtain power necessary for lighting the LED.

Specifically, the high-voltage power supply line or overhead line 10 is L phase (live line), the copper plate applied to the PCB is N phase (neutral wire), and when the voltage of the L phase rises, the charge is applied to the copper plate applied to the N phase PCB. When the voltage of the L phase drops, the electric current flows while the charge stored in the copper plate of the N phase moves to the high-voltage power supply line or overhead line 10 of the L phase that is falling to a lower voltage than the N phase, and the voltage rises and falls. When this is repeated, the power required to light the LED is charged in the capacitor C1.

When the voltage charged in the capacitor C1 exceeds the predetermined breakdown voltage set by the zener diode ZD, the current controller 130 switches the SCR Q2 to the conduction state and lights the LED 140 while a specified current flows. When the voltage charged in the capacitor C1 falls and the current flows slightly through the LED 140, the SCR Q2 is switched to the cutoff state and the current is cut off to turn off the LED 140.

In detail, the current controller 130 includes a zener diode ZD, a current control TR Q1, and an SCR Q2.

Zener diode ZD has a predetermined breakdown voltage. In FIG. 2, the voltages set at the zener diodes ZD D5, D6, and D7 are about 600V.

The current control TR Q1 is provided at the current input terminal of the LED 140 and always maintains an ON state.

SCR (Q2) gate is provided at the current output terminal of the LED 140, the conductive voltage is applied to the gate by the operation of the zener diode (ZD) is conducted and is cut off when the voltage drops.

And, the current controller 130 is provided at the current output terminal of the LED 140, the conductive voltage is applied to the SCR (Q2) is conducted and when the LED 140 is turned on, the voltage at both ends is switched to 0 V, the cone sensor ( When the voltage of C1 drops and the current flows weakly in the LED, the capacitor charges and falls below the conduction current of the SCR Q2 so that the SCR Q2 is switched to the blocking state, and the LED 140 turns off. C2) is further included. Capacitor C2 is reliably cut off when the SCR (Q2) gate is cut off, and becomes 0 V when the SCR (Q2) gate is in a conductive state. For reference, more than 300 LEDs may be installed on the safety sign plate 100.

2, 4 and 5, the operation of the safety sign 100 will be described in detail as follows.

(1) In the circuit diagram, assuming that the high-voltage power supply line 10 is in the L phase, and the voltage of the power supply line 10 increases, the bridge diode D1 → condenser C1 → bridge diode D3 passes through the virtual N phases to PCBs 3 and 4. The voltage of the coated copper plate increases along with the voltage of the power supply line 10, and the constrained charge occurs in the acrylics 2 and 5 located between the copper PCBs 1 and 6 and the PCBs 3 and 4, resulting in a confinement charge. The charge is stored in the copper plate widely applied ( S510 ).

(2) On the contrary, when the voltage of the power supply line 10 drops, the electric charge stored in the virtual N phase charged to the high voltage by the operation of (1) passes through the bridge diode D2 → condenser C1 → bridge diode D4, The current flows while moving to the power supply line 10, which is a low-phase L phase ( S520 ).

During the operation of (1) and (2), leakage current occurs in the air at a certain part within the basic leakage current range of the power supply line.

The operation states of (1) and (2) are repeated to charge the electrolytic capacitor C1 to obtain the power required to drive the LED 140 ( S530 ).

Since the current obtained in the above (1) and (2) is not enough to always turn on the LED 140 of the safety sign plate 100, the LED 140 blinks with a time difference to raise the alertness of the high voltage electricity. For this purpose, although not shown in the figure, a timer may be further provided for parallax adjustment.

(3) When the voltage of the electrolytic capacitor C1 reaches the voltage set by the zener diodes D5, D6, and D7 and a zener breakdown occurs, current is supplied to the gate of the SCR Q2 through the resistor R2, and the anode and cathode of the SCR Q2 are supplied. ) Is switched on and the current specified by the base current limiting resistor R1 of Q1, which is TR for current control, flows from the + terminal of the electrolytic capacitor C1 to the-terminal of Q1 → LED → Q2 → C1 to light up the LED 140. ( S540 ). At this time, since the capacitor C2 is SCR Q2 is ON, the voltage at both ends is switched to 0V.

(4) When the voltage of the capacitor C1 drops and the current flows slightly in the LED 140, the capacitor C2 is charged and falls below the conduction current of the anode and the cathode of the SCR Q2, so that Q2 is switched to a blocking state ( S550 ), the LED 140 remains off until the voltage of the capacitor C1 reaches the voltage at which zener breakdown of the zener diodes D5, 6, and 7 occurs ( S560 ).

While repeating the operations of (1) to (4), the LED 140 of the high-voltage electrical safety sign 100 is turned on without consuming power in the open power line to check the position of the high-voltage power line even at night without illumination. The accident can be prevented in advance.

Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art to which the present invention pertains can implement the present invention in other specific forms without changing the technical spirit or essential features, The embodiments are to be understood in all respects as illustrative and not restrictive.

In addition, the scope of the present invention is specified by the appended claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalent concepts are included in the scope of the present invention. Should be interpreted as

10.High voltage power supply line or overhead line
100 ... High Voltage Electrical Safety Signs
110 ... high voltage connection
120.DC power generator
130 ... Current Control
140 ... LED

Claims (6)

A conductive high voltage line connection for hanging on a high voltage power supply line or overhead line that generates an electric field;
A DC power generator for detecting a predetermined voltage from the high-voltage power supply line or overhead line and charging the LED lighting DC power to the capacitor C1 to obtain power for driving the LED; And
When the voltage charged in the capacitor C1 exceeds the predetermined breakdown voltage set by the zener diode, the SCR Q2 is switched to the conductive state and the LED is turned on while a specified current flows, and the voltage charged in the capacitor C1 is applied. If the current flows weakly in the fall, the SCR (Q2) is switched to the blocking state and the current is cut off, and includes a current controller to turn off the LED,
The DC power generator,
A bridge diode (BD) for rectifying and outputting an AC input voltage generated in the high voltage power supply line or overhead line to DC;
One end (+) of the bridge diode (BD) to the capacitor (C1) for charging a DC power supply for LED lighting; And
When the voltage of the high-voltage power supply line or overhead line rises, the voltage rises through the bridge diode BD and the capacitor C1, and charges are stored in the acrylic between the two PCBs due to polarization. When the voltage of the high voltage power supply line or overhead line drops, the copper plate coated on the PCB is transferred to the high voltage power supply line or overhead line through the bridge diode BD and the capacitor C1. High pressure electrical safety signs comprising.
delete The method according to claim 1,
The voltage of the high-voltage power supply line or overhead line increases and decreases, while charging the capacitor (C1) to obtain the power required to light the LED high-voltage electrical safety sign.
The method according to claim 3,
The high-voltage power supply line or overhead line is L phase (live line), the copper plate applied to the PCB is N phase (neutral wire),
As the voltage of L phase rises, the charge of copper plate applied to N phase PCB is stored, and when the voltage of L phase falls, the charge stored in N phase copper plate is lower than N phase to the high voltage power supply line or overhead line of L phase. When the current flows while moving and the voltage rises and falls as described above, the high voltage electrical safety sign is characterized in that the capacitor (C1) is charged with the power required to turn on the LED.
The method according to claim 1,
The current control unit,
A zener diode having a predetermined breakdown voltage;
A current control TR (Q1) provided at the current input terminal of the LED; And
And a SCR (Q2) provided at a current output terminal of the LED and applied when the operating voltage is applied to the gate by the operation of the zener diode, and cut off when the voltage drops.
The method according to claim 5,
The current control unit,
It is provided at the current output terminal of the LED. When the operating voltage is applied to the SCR (Q2), the conductive is turned on. When the LED is turned on, the voltage at both ends is switched to 0 V. The high-voltage electrical safety sign further comprises a capacitor (C2) to charge the charge to flow down and fall below the conduction current of the SCR (Q2) so that the SCR (Q2) is switched to the blocking state, the LED is turned off.

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