KR101720126B1 - Recommendation apparatus for changing surge protector - Google Patents

Abstract

The present invention relates to a recommendation apparatus to change a surge protector. The recommendation apparatus to change a surge protector comprises: a sensor unit which detects the surge protector and rectifies and outputs a detected surge voltage; an attenuating unit which attenuates the surge voltage, which is rectified by the sensor unit, at a certain rate, and outputs the attenuated surge voltage; a control unit which receives an input of the output voltage, which is outputted by the attenuating unit, accumulates and saves the number of times of surge inflow corresponding to an inflow of the output voltage, and the size of surge corresponding to the size of the output voltage, and outputs a control signal for turning on or off an LED in accordance with the result of comparing the accumulated surge size with a preset standard value; and a display unit which has a plurality of LEDs and turns on or off one or more of the plurality of LEDs in accordance with the control signal. Accordingly, the present invention can accumulate, save, and display the number of times of surge inflow into a surge protector and the size of surge, and allow a user to easily identify the condition of the surge protector.

Description

[0001] The present invention relates to a surge protector,

[0001] The present invention relates to a surge protector replacement recommendation apparatus, and more particularly, to a surge protector replacement recommendation apparatus that accumulates and stores a surge inflow frequency and an inflow surge size, The present invention relates to a surge protector replacement recommendation apparatus capable of providing a surge protector.

A surge, commonly referred to as impulse, spark, or noise, refers to a high-voltage, high-current electrical fluctuation that appears and disappears for a very short period of time. That is, a surge is a momentary abnormal overvoltage that occurs due to various causes, such as power lines, signal lines, and other communication lines of a power system.

The cause of the surge is caused by the phenomenon of copper current due to the strong impact electricity such as lightning, induction electromagnetic wave caused by the nearby high voltage transmission line and the derivative, induction phenomenon of the electric electromagnetic induction close to the strong RF transmission tower, and strong ARC such as high frequency welding machine Induced noise due to switching on / off operation, opening / closing surge due to switch on / off operation, and damage caused by friction static electricity.

In the analog era, there was no big problem even if a high-voltage lightning arrester was installed. However, due to the fact that many parts were replaced with semiconductor devices when entering the digital age, they were caused by lightning, lightning, power system accident, It is very susceptible to surge, which may cause malfunction, deterioration and breakage of the equipment. That is, due to the occurrence of the surge, troubles such as electric disturbance, self disturbance, static electricity disturbance, electromagnetic interference, etc. appear in the electric circuit or the electronic circuit, which may cause fatal damage to the digital device or cause malfunction of the program. Which can lead to a lot of damage such as deterioration of electrical insulation of the system or components.

Accordingly, in order to prevent damage or malfunction of electrical equipment, electronic parts, software, etc. due to the occurrence of surge, a surge protector capable of appropriately absorbing and shielding surge according to various causes and sizes is used.

However, since the surge protector has damage to the internal parts and the damage of the parts may not be visually recognized, it is difficult to determine whether the surge protector is normally operating until damage by the surge occurs. Further, since the degree of damage of the parts used in the surge protector can not be known, it is also difficult to accurately grasp the replacement time of the surge protector.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a surge protector having a surge protector and a surge protector that accumulate and display the number of times of surge inflow and the inflow surge size, The surge protector is detachably connected to the surge protector.

According to an aspect of the present invention, there is provided a surge protector replacement recommendation apparatus including first and second input terminals for receiving a surge voltage, a first diode connected in parallel to the first and second input terminals, , First and second resistors (R1 and R2) connected in parallel to the first and second input terminals, and a bridge rectifier (BD1) having an input terminal connected to the first and second input terminals, A sensor unit for sensing the surge voltage and outputting the surge voltage; and an attenuator for attenuating the surge voltage rectified by the sensor unit at a predetermined ratio to output the output voltage, The number of surge inflows corresponding to the inflow of the output voltage and the surge size corresponding to the magnitude of the output voltage are cumulatively stored and the accumulated surge size is compared with a preset reference value, And a control unit, and a plurality of LED provided with a micro-controller for outputting a control signal, and a display unit for the lighting or light-off at least one of the plurality of LED in accordance with the control signal.

The attenuator may further include a third resistor R3 connected between a first node N1 which is a positive output terminal of the bridge rectifier BD1 and a ground terminal of the bridge rectifier BD1, A third diode D3 having an anode connected to the other end of the fourth resistor R4 and a fifth resistor R4 having one end connected to the cathode of the third diode D3, A fourth diode D4 connected to the other end of the fifth resistor R5 and a cathode connected to a power supply terminal of the fifth resistor R5, an anode of the fifth resistor R5 connected to the cathode of the third diode D3, And a sixth resistor R6 connected between the other end of the fifth resistor R5 and the ground terminal. The first capacitor C1 may be connected between the connection node and the ground terminal, .

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The sensor unit may further include a surge protector connected to the sensor unit, and may further include a varistor monitor unit for monitoring whether the varistor included in the surge protector is damaged.

The controller may further include a counter connection unit for transmitting a signal corresponding to the number of surge inflows to the external counter device.

According to the present invention, the number of surge inflows and inflow burgy inflows into the surge protector absorbing and removing surges induced in the input signal can be accumulated and displayed according to various causes. Accordingly, since the state of the surge protector connected can be easily grasped, it is possible to grasp the replacement time before the surge protector malfunctions, and it is possible to prevent damage or malfunction of the electronic device or parts due to the surge.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of a surge protector replacement recommendation apparatus according to an embodiment of the present invention; FIG.
2 is a block diagram of a surge protector replacement recommendation apparatus according to an embodiment of the present invention;
FIG. 3 is a diagram showing an example of a circuit configuration for the sensor unit and the attenuation unit in FIG. 1;
FIG. 4 is a diagram showing an example of the circuit configuration for the control unit in FIG. 1,
FIG. 5 is a diagram showing an example of the configuration of the microcontroller in FIG. 4,
Fig. 6 is a diagram showing an example of a circuit configuration for the varistor monitoring unit in Fig. 1; Fig. And
FIG. 7 is a diagram showing an example of the circuit configuration for the counter connection portion in FIG.

Hereinafter, the present invention will be described in detail with reference to the drawings.

FIG. 1 is a diagram for explaining an operation environment of a surge protector replacement recommendation apparatus according to an embodiment of the present invention.

Referring to FIG. 1, the surge protector replacement recommendation apparatus 100 may be used in connection with the surge protector 10. Here, the surge protector 10 absorbs and removes surges induced in an input signal or the like according to various causes, thereby preventing damage or malfunction of electronic devices and parts, thereby stably operating the devices.

The surge protector replacement recommendation apparatus 100 is connected to the surge protector 10 to accumulate and store the number of surge inflows flowing into the surge protector 10 and the size of the inflow surge. According to the operation of the surge protector replacement recommendation apparatus 100, it is possible to grasp the degree of damage or replacement timing of the surge protector 10.

2 is a block diagram of a surge protector replacement recommendation apparatus according to an embodiment of the present invention.

1, the present surge protector replacement recommendation apparatus 100 includes a sensor unit 110, an attenuation unit 120, a control unit 130, a display unit 140, a varistor monitoring unit 150, and a counter connection unit 160 ). When such components are implemented in practical applications, two or more components may be combined into one component, or one component may be divided into two or more components as necessary.

The sensor unit 110 senses a surge voltage and rectifies and outputs the sensed surge voltage. The sensor unit 110 can sense a surge voltage from a current discharged to the ground by operating a surge protection circuit in the surge protector 10.

The attenuator 120 attenuates the surge voltage rectified by the sensor unit 110 at a predetermined ratio and outputs the attenuated voltage.

The control unit 130 receives the output voltage output from the attenuator 120, accumulates the number of surge inflows corresponding to the inflow of the output voltage, and the surge sizes corresponding to the magnitudes of the output voltages, It is possible to output a control signal for turning on or off the LED of the display unit 140 according to a result of comparing the accumulated surge size stored in the display unit 140 with a preset reference value.

The display unit 140 includes LEDs of different colors, and the LEDs are turned on or off according to a control signal of the controller 130.

The varistor monitoring unit 150 monitors whether or not the varistor used in the surge protector 10 is damaged and transmits a breakage detection signal to the control unit 130 when the varistor is confirmed to be broken, (140) causes the specific LED to be turned on.

A varistor used in the surge protector 10 is a nonlinear semiconductor resistance element whose resistance value is changed by a voltage applied to both ends, and is an abbreviation of a variable resistor. The basic operation of the varistor is that when the clamping voltage is reached, the high impedance before operation changes to low impedance at a rate of μsec, which can instantaneously deteriorate the surge. Varistors have a very large current capacity, a wide range of clamping variable voltages, and low cost parts, making them widely used.

The counter connection unit 160 transmits a signal corresponding to the number of times of surge inflow transmitted from the control unit 130 to the external counter device so that the number of times of occurrence of the surge can be displayed by the external counter device in numbers or symbols.

In addition, although not shown in the figure, the power supply unit may further include a power supply unit that receives an external power supply or an internal power supply and supplies power required for operation of the respective components. A battery may be used as the power supply unit.

With this arrangement, the number of surge inflows and the size of the inflow surge can be accumulated and displayed.

FIG. 3 is a diagram showing an example of the circuit configuration for the sensor unit and the attenuation unit in FIG.

Referring to FIG. 3, the sensor unit 110 may include a zener diode D1, a resistor R1, a resistor R2, and a bridge rectifier BD1.

The surge voltage input through the input terminal J1 is rectified by the Zener diode D1, resistor R1, and resistor R2 connected in parallel to the input terminal J1 to which the sensed surge voltage is input, and the bridge rectifier BD1 whose input is connected to the input terminal J1, And is output to the (+) output terminal and the (-) output terminal of the rectifier BD1.

The attenuator 120 may include a resistor R3, a resistor R4, a resistor R5, a resistor R6, a diode D3, a diode D4, and a capacitor C1.

A resistor R4, a diode D3 and a resistor R5 are connected in series between the first node N1 of the bridge rectifier BD1 and the second node N2 of the attenuator 120, And a resistor R3 is connected between the first node N1 and the ground terminal. The capacitor C1 is connected between the cathode of the diode D3 and the connection node of the resistor R5 and the ground terminal, and the resistor R6 is connected between the second node N2 and the ground terminal. The anode of the diode D4 is connected to the second node N2, and the cathode is connected to the power supply terminal.

With this configuration, the rectified surge voltage output from the sensor unit 110 to the first node N1 is converted to a low voltage attenuated at a predetermined rate by the attenuation unit 120, and is output to the second node N2 .

FIG. 4 is a diagram showing an example of the circuit configuration for the control unit and the display unit in FIG.

Referring to FIG. 4, the controller 130 may include a microcontroller 133, a resistor R7, and a switch SW1. The switch SW1 can be used to reset the microcontroller 133. [

The microcontroller 133 receives the output voltage that is output from the attenuator 120 to the second node N2 and receives the output voltage from the RA4 I / O port. The microcontroller 133 calculates the number of surge inflows corresponding to the inflow of the output voltage, RA1, RC3 I / O control signals for turning on or off the LEDs of the display unit 140 according to the result of accumulating surge sizes corresponding to the magnitude of the voltage and comparing the accumulated surge size with a preset reference value, O port.

The microcontroller 133 can store a plurality of accumulated surge inflows, surge sizes, and reference values in case of data loss due to circuit malfunction or the like.

The display unit 140 may include a resistor R8, a resistor R9, a resistor R10, a resistor R11, a resistor R12, a zener diode D2, a transistor Q1, a light emitting diode LP1, a light emitting diode LP2, and a light emitting diode LP3.

The light emitting diodes LP1, LP2, and LP3 may be configured in different colors, and one of the LEDs LP1, LP2, and LP3 may be lit depending on the accumulated surge size.

For example, the Green LED can be turned on when the cumulative state of the surge size is 0 to 50% based on the preset reference value using the LEDs LP1, LP2, and LP3 respectively by the Green LED, the Yellow LED, and the Red LED. Turning on the Green LED can also indicate that the surge protector replacement recommendation apparatus 100 is powered on and operating. The Yellow LED with accumulated status of 50 ~ 80% is turned on. If the accumulated status is 80 ~ 100%, the Yellow LED can be turned off and the Red LED can be turned on. Accordingly, when the yellow LED is lit, the user can know that the surge protector 10 needs to be replaced. When the red LED is lit, the surge protector 10 recognizes that the surge protector 10 is no longer able to perform its function .

The display unit 140 may use LEDs that are turned on in a plurality of colors instead of LEDs of different colors depending on the use environment.

According to the LED lighting state of the display unit 140, the user can know to what extent the parts of the surge protector 10 are damaged, and the replacement timing of the surge protector 10 can be grasped in advance.

FIG. 5 shows an example of the configuration of the microcontroller in FIG.

5, the microcontroller 133 includes a core logic section 133-1, a timer 133-2, a counter 133-3, an A / D converter 133-4, a comparator 133-5 ), A memory 133-6, I / O ports 133-7 and 133-8, and the like.

The A / D converter 133-4 receives the output voltage from the attenuator 120 and converts it into a digital value.

In the memory 133-6, digital values converted by the A / D converter 133-4 are accumulated and stored by the core logic unit 133-1. The reference value and the number of surge inflows and the like are also stored in the memory 133-6.

The comparator 133-5 compares the accumulated digital value stored in the memory 133-6 with a reference value.

The core logic unit 133-1 may generate a control signal for turning on or off the LEDs disposed on the display unit 140 according to the comparison result of the comparator 133-5.

With this configuration, it is possible to calculate the number of surge inflows and the size of the inflow surge, and accumulate and store them in the memory.

6 is a diagram showing an example of a circuit configuration for the varistor monitoring unit.

Referring to FIG. 6, the varistor monitor 150 may include a resistor R13, a resistor R14, a resistor R15, a resistor R16, and a photocoupler PC1.

The photocoupler PC1 is a photocoupler in which a light emitting element and a light receiving element are optically coupled to each other and are incorporated in one package for the purpose of transmitting electrical signals while electrically insulated between circuits.

A fuse element connected in series to the varistor is connected to the monitor terminal J3. Corresponding signals are transmitted to the RC0 I / O port of the microcontroller 133 by the photocoupler PC1 according to breakage of the fuse element.

Accordingly, the microcontroller 133 outputs a control signal so that the Red LED is lit on the display unit 140, thereby indicating the damage of the varistor.

7 is a diagram showing an example of a circuit configuration for the counter connection portion.

Referring to FIG. 7, the counter connection portion 160 may include a resistor R17, a transistor Q2, and a zener diode D5.

The base of transistor Q2 is connected to the RC2 I / O port of microcontroller 133 via resistor R17, the collector is connected to the first terminal of counter connection terminal J4, and the emitter is connected to the second terminal and ground. Zener diode D5 is coupled between the collector of transistor Q2 and the emitter.

With such a circuit configuration, the on / off state of the transistor Q2 is changed according to the control signal of the microcontroller 133 and the signal corresponding to the number of surge inflows can be transmitted to the external counter device connected to the counter connection terminal J4. Thereby, the external counter device can display the number of surge inflows by numbers, symbols, and the like.

It is to be understood that the present invention is not limited to the configuration and the method of the embodiments described above, but may be applied to all or some of the embodiments May be selectively combined.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It should be understood that various modifications may be made by those skilled in the art without departing from the spirit and scope of the present invention.

110: sensor unit 120: attenuator
130: control unit 140: display unit
150: varistor monitoring section 160: counter connection section

Claims (10)

A first diode (D1) connected in parallel to the first and second input terminals, first and second input terminals connected in parallel to the first and second input terminals, A sensor unit for sensing the surge voltage and rectifying the sensed surge voltage and outputting the surge voltage, the sensor unit comprising: resistors R1 and R2; and a bridge rectifier BD1 having an input terminal connected to the first and second input terminals.
An attenuation unit for attenuating a surge voltage rectified by the sensor unit at a predetermined ratio and outputting the attenuated voltage;
A surge voltage input unit for receiving an output voltage from the attenuator and accumulating and storing a surge inflow frequency corresponding to the inflow of the output voltage and a surge voltage corresponding to the magnitude of the output voltage, A control unit having a microcontroller for outputting a control signal for turning on or off the LED according to the result; And
And a display unit having a plurality of LEDs and for turning on or off at least one of the plurality of LEDs according to the control signal. delete The method according to claim 1,
The attenuator may include:
A third resistor R3 connected between a ground node and a first node N1 which is a (+) output terminal of the bridge rectifier BD1;
A fourth resistor R4 whose one end is connected to the first node N1;
A third diode D3 having an anode connected to the other end of the fourth resistor R4;
A fifth resistor R5 whose one end is connected to the cathode of the third diode D3;
A fourth diode D4 having an anode connected to the other end of the fifth resistor R5 and a cathode connected to a power supply terminal;
A first capacitor (C1) connected between a ground node and a connection node connecting a cathode of the third diode (D3) and one end of the fifth resistor (R5); And
And a sixth resistor (R6) connected between the other end of the fifth resistor (R5) and the ground terminal. The method according to claim 1,
The microcontroller includes:
An A / D converter for converting the output voltage into a digital value;
A memory for storing a reference value;
A comparator; And
And a core logic unit for accumulating the digital values in the memory and generating the control signal according to a comparison result of the comparator comparing the accumulated digital value stored in the memory with the reference value. Saver replacement advisory device. The method according to claim 1,
And a surge protector to which the sensor unit is connected. 6. The method of claim 5,
And a varistor monitoring unit for monitoring whether the varistor included in the surge protector is damaged. The method according to claim 6,
The varistor monitoring unit,
First and second connection terminals connected to a fuse element connected to the varistor;
An optocoupler (PC1) having a collector terminal connected to the first I / O port of the microcontroller and an emitter terminal connected to the ground terminal;
A thirteenth resistor R13 connected between the collector terminal and the power terminal of the photocoupler PC1;
A fourteenth resistor R14 connected between the anode terminal of the photocoupler PC1 and the first connection terminal;
A sixteenth resistor R16 connected between the cathode terminal of the photocoupler PC1 and the second connection terminal; And
And a fifteenth resistor (R15) connected between the anode terminal and the cathode terminal of the photocoupler (PC1). The method according to claim 1,
Further comprising a counter connection part for transmitting a signal corresponding to the number of surge inflows to the external counter device. 9. The method of claim 8,
The counter connection unit includes:
First and second counter connection terminals to which the external counter device is connected;
A seventeenth resistor (R17) having one end connected to a second I / O port of the microcontroller;
A second transistor Q2 having a base connected to the seventeenth resistor R17, a collector connected to the first counter connection terminal, and an emitter connected to the second counter connection terminal and a ground terminal; And
And a fifth diode (D5) connected between the collector of the second transistor (Q2) and the emitter. The method according to claim 1,
Wherein the accumulated number of surge inflows and the size of the surge are stored as a plurality of the surge protector replacement recommendation apparatuses.

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