KR101465401B1 - Lifetime estimating device of surge protector and method thereof - Google Patents

Abstract

The present invention relates to a lifetime estimating device of a surge protector capable of significantly improving product reliability by detecting resistance inside the surge protector to determine a lifetime of a product, and estimating a residual lifetime according to an exact substitution of the product by applying an input surge signal as a parameter, and to a method thereof. The lifetime estimating device of a surge protector includes: the surge protector interposed in a communications line; a resistance detector to detect the internal resistance of the surge protector; a resistance measurement driver to measure resistance applied to an inside of the surge protector; a surge current detector to detect a magnitude of a surge current introduced into the surge protector; and a controller to estimate and determined a residual lifetime of the surge protector through the detected internal resistance of the surge protector. When a magnitude of the surge current detected through the surge current detector is less than 10 KA, and a lifetime termination time of the surge protector is 100%, if the resistance is 1) 0 Ω to 100 KΩ, the controller determines that the lifetime termination time of the surge protector is 0% (normal state). If the resistance exceeds 2) 100 KΩ, the controller determines that the lifetime termination time of the surge protector is increased by 1% per 10 KΩ (residual lifetime). If the resistance is 3) 600 KΩ, the controller determines that the lifetime termination time of the surge protector is 50%. If the resistance exceeds 4) 600 KΩ, the controller determines that the lifetime termination time of the surge protector is increased by 1.25% per 10 KΩ (residual lifetime). If the resistance is 5) 1000 KΩ, the controller determines that the lifetime termination time of the surge protector is 100% (substitution: failure).

Description

TECHNICAL FIELD [0001] The present invention relates to a lifetime estimating apparatus and method for a surge protector,

The present invention relates to an apparatus and a method for predicting the life of a surge protector, and more particularly, to a surge protector for detecting a resistance value of the surge protector, And more particularly, to an apparatus and method for predicting the life of a surge protector that greatly improves product reliability by predicting the remaining service life due to accurate product exchange.

The conventional surge protector is a device for preventing a load burnout due to a surge voltage caused by lightning or the like. In the conventional surge protector, the surge protection elements including the varistor are deteriorated by the surge inflow of several times, It can be supplied to the electronic device in a state where it can not be used, thereby causing damage to the electronic device.

In the case of such a surge protector, the lifetime of the surge protector is determined by the number of times of lightning or the surge or the size of the lightning surge. In the prior art, however, the life of the surge protector is unknown.

Accordingly, Korean Patent No. 10-1182596 discloses a surge protector lifetime display device and method for allowing a user to know when a surge protector is to be replaced.

This technology can check the amount of leakage current to the ground, check if the surge protector is properly installed on the ground wire, and check the date of surge protector leakage current, surge frequency, surge input capacity, So that it is possible to obtain statistical data by time.

However, such a conventional technique has a limitation in predicting the life of the surge protector more precisely, that is, accurately estimating the life of the surge protector, which reflects the current state of the surge protector simply by using the leakage current of the surge protector, the number of surges and the capacity.

Patent Registration No. 10-1182596, Registration Patent No. 10-1013198

It is an object of the present invention to provide a surge protector that is capable of detecting a resistance value within a surge protector and determining the life of the product based on the detected resistance value. And an object of the present invention is to provide an apparatus and method for predicting the life of a surge protector, which has greatly improved product reliability by predicting the life of the surge protector.

According to an aspect of the present invention, there is provided a semiconductor device comprising: a fuse installed in each line; a surge limiting element for limiting an incoming surge; a resistor for delaying an incoming surge and limiting a current; And a surge protector including a transient voltage suppressing element for suppressing a transient voltage due to an incoming surge; A resistance value detecting unit for driving the resistance measurement driving unit and detecting an internal resistance value of the surge protector input through the resistance measuring driving unit; A resistance measurement driving unit which is driven so as to measure a resistance value inside the surge protector after the measurement switch is normally kept in the off state and the measurement switch is turned on only in the resistance measurement; A surge current detector for detecting the magnitude of the surge current flowing into the surge protector; The surge current detected by the surge current detector is less than 10 kA, and the end of life of the surge protector is 100%. (Residual life), (3) when the resistance value is 600KΩ, it is 50%, (4) when it exceeds 600KΩ, it increases by 1.25% per 10KΩ. (Remaining life time), and (5) 100KΩ if 100KΩ (replacement: defective).

According to the present invention, when the surge current amplitude of the surge protector 10 is detected once at a rate of 1 25 KA or more, 2 times at 20 kA or more, or 3 times at 10 kA or more, .

According to the present invention, there is provided an information collecting apparatus for exchanging information with a control unit 130 through an external device such as a central management server or a PC via a network, and a communication signal converter Type converter unit, a surge frequency sensing unit for counting the number of surges flowing into the surge protector and inputting the counted number to the control unit, and an ID setting unit for setting and generating a unique number of the product at the DIP switch position.

According to another aspect of the present invention, there is further provided a line voltage detecting unit for detecting a voltage applied between P1 and P2 of a communication line of a surge protector and detecting whether a fuse and a thermal fuse are broken or a circuit is short- do.

The present invention also provides a method for predicting the life of a surge protector, comprising the steps of: generating and storing a product number (ID); When the product ID is set, the automatic switching apparatus operates in the bypass mode, the LED according to the standby mode is turned on, and if there is a mode change command in the command standby state, the mode enters the selected mode, Proceeding to mode; Measuring a resistance of the surge protector 10 when a resistance measurement command is generated after entering the standby mode; (1) when the analyzed resistance value is in a range of 0 to 100 K, 0% (steady state); (2) when the resistance value exceeds 100 K, the resistance value is increased by 1% per 10 KΩ; (3) when the resistance value is 600 KΩ, , Then it is increased by 1.25% per 10KΩ, and if it is 1000KΩ, it is determined as 100% (replacement); Storing the measured value in the determining process, initiating communication, and transmitting the value to an information collecting device; A step of declaring a FAULT when the resistance measurement value corresponds to the life ending (replacing) state corresponding to the step (4), and lighting an LED lamp indicating the replacement of the surge protector through the display unit; Detecting a signal input from the surge detection unit, the surge current detection unit, the line voltage detection unit, and the insulated signal transmission / reception unit when the control unit does not indicate a failure; Detecting and analyzing the state of the earth leakage breaker, which is a connected peripheral device, through the insulated signal transmitting and receiving unit; If the surge protector is determined to be in a normal state as a result of the analysis, storing the measured value and initiating communication and transmitting the value to an information collection device; A step of judging the life prediction to be 100% (defective) if the surge current detected by the above-mentioned spot current detection unit is detected once at 25KA or more, 3 times at 20KA or more, or 10 times or more at 10KA or more. Determining that the surge protector is faulty if it is determined that the voltage detected through the line voltage detection unit is an open of the fuses F1 and F2 or thermal fuses TH1 and TH2 or a short circuit of the circuit; A step of determining that the earth leakage breaker detected by the insulated signal transmission and reception unit 110 is defective if it is determined to be defective; And a step of illuminating an LED lamp which notifies a failure corresponding to the failure or failure of the surge protector or an external peripheral device and informs the replacement or failure of the surge protector or the failure of the peripheral device through the display unit do.

As described above, according to the present invention, the resistance value in the surge protector is detected, and the life of the product is determined based on the resistance value. By predicting the remaining life due to the more accurate product exchange by applying the applied surge signal as a variable, Provides advantages.

1 is a block diagram of an apparatus for predicting the life of a surge protector according to the present invention;
FIG. 2 is a flowchart showing a method for predicting the life of a surge protector according to the present invention,
3 is a detailed flowchart of the standby mode according to the present invention,
FIG. 4 is a detailed flowchart of a resistance value measuring method according to the present invention,
5 is a detailed flowchart of the failure declaration according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings.

1 is a block diagram of an apparatus for predicting the life of a surge protector according to the present invention.

The surge protector 100 includes a surge protector 100, a power supply unit 20, an information collecting apparatus 30, an insulated converter unit 40, a resistance value detector 50, A surge current detection unit 80, a line voltage detection unit 90, an ID setting unit 100, an insulated signal transmission and reception unit 110, a display unit 120, and a display unit 120. The resistance measurement driving unit 60, the surge frequency sensing unit 70, And a control unit 130.

The surge protector 10 is interposed in the communication lines L1 and L2 and is connected between the communication line input terminal L1-IN L2-IN and the output terminal L1-OUT L2- Is installed.

The surge protector 10 includes fuses F1 and F2 installed in respective lines, surge limiting tubes GDT1 and GDT2 for limiting the surge applied thereto, The thermal fuses TH1 and TH2 operated to overheat and the transient voltage suppressing elements TVS1 to TVS3 for suppressing the transient voltage due to the incoming surge.

The power supply unit 20 is a DC / DC converter that generates a constant DC voltage and supplies operating power to each circuit unit.

The information collecting device 30 exchanges information with the control unit 130 through an external device such as a central management server or a PC via a network.

The insulated converter unit 40 is a communication signal converter interposed between the information collecting apparatus 30 and the control unit 130.

The resistance value detector 50 detects the internal resistance value of the surge protector 10 and drives the resistance measurement driver 60 to detect the internal resistance value of the surge protector 10 inputted thereto, ).

The resistance measurement driving unit 60 maintains the measurement switch in the OFF state at normal times and switches the measurement switch ON only at the time of the resistance measurement and measures the resistance value inside the surge protector 10 .

Herein, the resistance measurement time is operated when a resistance measurement communication command is received from the outside or when the apparatus is initially powered on.

The surge frequency detection unit 70 counts the number of surges detected from a current sensor (not shown) installed in the communication line and inputs the counted number to the control unit 130. The surge current detection unit 80 detects the surge current And converts the voltage into a voltage and inputs the voltage to the controller 130.

The line voltage detecting unit 90 detects voltages applied between P1 and P2 of the communication lines L1 and L2 of the surge protector 10. The line voltage detecting unit 90 detects the voltages applied to the fuses F1 and F2 and the thermal fuses TH1 and TH2, Or short circuit of the circuit, and provides the control unit 130 with the detection result.

The ID setting unit 100 generates a unique number (ID) of the product at the DIP switch position.

The insulated signal transceiver 110 detects an analog signal of the connected peripheral devices and transmits the signal to the controller 130 after processing the digital signal.

The peripheral device may be, for example, an automatic circuit breaker type circuit breaker.

The display unit 120 includes a plurality of LED lamps to indicate the state of the product by lighting the corresponding lamp.

The controller 130 detects a value input from the resistance value measuring unit 50 and detects the value of the resistance value of the surge protector 10 through the internal resistance value of the surge protector 10 interposed on the communication lines L1 and L2. Predict remaining life.

If the resistance value is ① 0Ω ~ 100KΩ, it is 0% (steady state). ② If it exceeds 100KΩ, it increases by 1% per 10KΩ. ③ 50% (recommended replacement time) when it is 600KΩ. ⑤ If it is 1000KΩ, it is judged as 100% (replacement: defective).

However, the above conditions are limited to the case where the surge current input through the surge current detection unit 80 is less than 10 kA.

However, when the surge current magnitude is detected as 1 25KA or more, 2 times as 20KA or more, or 10 times as 10KA or more, the life prediction is 100% (replacement: bad).

2 is a flowchart showing a method of predicting the life of a surge protector according to the present invention.

The overall operation of the present invention will now be described.

First, when a power source is inputted, driving power is applied to each circuit part through a power supply part 20.

At this time, the control unit 130 reads the set value through the ID setting unit 100, and generates and stores the product number (ID) (S11 and S12)

When the product ID is set, the system goes to STBY (standby) mode (S13)

3, the LED according to the standby mode is turned on by the display unit 120, and if there is a mode change command in the command standby state, the automatic switching apparatus operates in the selected mode And if not, returns the program.

The mode change is changed by a communication interrupt (mode change command) signal from the information collecting apparatus 20 via the control unit 130 or by the control unit 130. [

After entering the standby mode, the resistance of the surge protector 10 is measured when a resistance measurement command is generated (step S14)

The resistance measurement is performed at the time of power supply initial application and at the time of receiving a communication command.

The controller 130 instructs the resistance value detector 50 to measure the internal resistance value of the surge protector 10.

The resistance value detector 50 turns on a switch connected to the surge protector 10 by operating the resistance measurement driver 60 so that the resistance can be measured and then the resistance value And inputs it to the control unit 130 (see FIG. 4).

The control unit 130 computes and analyzes the input resistance value and performs lifetime prediction as follows (S15)

That is, if the analyzed resistance value is 1? 0 to 100 K?, The controller 130 increases 0% (steady state). If the resistance value exceeds 100 K ?, the controller 130 increases 1% Increase by 1.25% per 10 KΩ, and ⑤ if it is 1000 KΩ, it is judged as 100% (replacement: bad).

Also, the measured value is stored in the determining step S15, and communication is started to transmit the measured value to the information collecting device 30 through the insulating converter 40. (Steps S16 to S18)

However, if it is determined in step S15 that the resistance measurement value is in the end of life (failure) corresponding to the above-mentioned step 4, a failure is declared and an LED (not shown) indicating the replacement of the surge protector 10 through the display unit 120 (S19 and S20) (see Fig. 5)

If the controller 130 does not declare a failure, the controller 130 performs an ACTIVE mode (S21)

Therefore, the controller 130 detects a signal inputted from the surge frequency detector 70, the surge current detector 80, the line voltage detector 90 and the insulated signal transmitter / receiver 110 (S22)

First, the number of surges to be inputted is detected through the surge frequency sensing unit 70, and the current magnitude of the surge current is detected and analyzed through the surge current sensing unit 80.

The voltage applied between P1 and P2 of the communication lines L1 and L2 of the surge protector 10 is detected and analyzed through the line voltage detector 90. [

Also, the state of the earth leakage breaker, which is a connected peripheral device, is detected and analyzed through the insulated signal transmission / reception unit 110 (step S23)

If it is determined that the surge protector 10 is in a normal state in step S23, the surge protector 10 stores this value and starts communication, and transmits this value to the information collecting device 30 via the insulating converter 40 (Steps S24 to S26)

However, if the surge current detected by the surge current detector 80 in the step S23 is detected once at 25KA or more, 3 times at 20KA or more, or 10 times at 10KA or more, % (Replacement: bad).

When the voltage detected through the line voltage detecting unit 90 is determined as the open of the fuses F1 and F2 or the thermal fuses TH1 and TH2 or the short circuit of the circuit, .

Further, when the earth leakage breaker detected through the insulated type signal transmitting and receiving unit 110 is malfunctioning, it is judged to be defective.

If the failure (replacement timing) or failure of the surge protector 10 or the external peripheral device (the earth leakage breaker) is defective, a failure corresponding thereto is declared and the replacement or failure of the surge protector 10 via the display unit 120, (Step S28 and step S29)

Also, the control unit 130 starts communication or performs a detection operation according to a communication interrupt signal input from the information collection device 30, and transmits the stored value.

Therefore, it is possible to determine the replacement time of the surge protector or to recognize the state of the surge protector at present by communicating with the apparatus at a remote place through the information collecting device 30 to grasp the lifetime prediction of the product.

10: surge protector 20: power supply
30: Information collecting device 40: Isolated converter part
50: resistance value detecting section 60: resistance measuring driving section
70: Surge frequency detector 80: Surge current detector
90: line voltage detecting unit 100: ID setting unit
110: insulated type signal transmitting / receiving unit 120: display unit
130:

Claims (5)

The fuses F1 and F2 provided in the respective lines and the surge limiting elements GDT1 and GDT2 for limiting the incoming surge are interposed in the communication lines L1 and L2, The thermal fuses TH1 and TH2 which are operated to overheat and the transient voltage suppressing elements TVS1 to TVS3 which suppress the transient voltage due to the incoming surge A surge protector 10;
A resistance value detection unit 50 for driving the resistance measurement driving unit 60 and detecting the internal resistance value of the surge protector 10 inputted thereto;
A resistance measurement driving unit which is driven so as to measure a resistance value inside the surge protector 10 after the measurement switch is normally turned off and the measurement switch is turned on only at the time of resistance measurement, (60);
A surge current detector 80 for detecting the magnitude of the surge current flowing into the surge protector 10; And
The remaining life of the surge protector 10 is predicted and determined through the detected internal resistance value of the surge protector 10,
The surge current detected by the surge current detector 80 is less than 10 kA,
When the resistance value of the surge protector is 100%, it is 0% (steady state) when the resistance value is from 0Ω to 100KΩ. (2) When the resistance value exceeds 100KΩ, , The control unit 130 determines that the voltage is increased by 1.25% per 10 K? (Remaining life), and 100% (replacement: defective) if it is 1000 K ?.
The method according to claim 1,
The control unit 130 determines that the surge protector 10 has reached the end of its life if the surge current amplitude of the surge protector 10 is detected once at 25 KA or more, 3 times at 20 KA or more, or 10 times at 10 KA or more A device for predicting the life of a surge protector.
The method according to claim 1,
An information collecting device 30 for exchanging information with an external device such as a central management server or a PC via a network with the control unit 130 and a communication signal converter 30 interposed between the information collecting device 30 and the control unit 130. [ A surge frequency detector 70 for counting the number of surges flowing into the surge protector 10 and inputting the counted number of surges to the controller 130; Further comprising: an ID setting unit (100) for setting and generating a life time of the surge protector.
The method according to claim 1,
The voltage applied between P1 and P2 of the communication lines L1 and L2 of the surge protector 10 is detected so that the openings of the fuses F1 and F2 and the thermal fuses TH1 and TH2, Further comprising a line voltage detector (90) for detecting whether a short circuit is present or absent.
The method of predicting the life of a surge protector according to claim 1,
Generating and storing a product number (ID);
When the product ID is set, the automatic switching apparatus operates in the bypass mode, the LED according to the standby mode is turned on, and if there is a mode change command in the command standby state, the mode enters the selected mode, (STBY) mode;
Measuring a resistance of the surge protector 10 when a resistance measurement command is generated after entering the standby mode;
The life estimation is performed by calculating and analyzing the input resistance value,
③ If the resistance value is 1 ~ 0 Ω ~ 100K Ω, it increases by 1% per 10K Ω. ③ If it exceeds 600K Ω, it increases by 50% (Replacement);
Storing the measured value in the determination process, initiating communication, and transmitting the value to the information collection device 30;
If the resistance measurement value is in the lifetime expiration (replacement) state corresponding to the step (4), the FAULT is declared and the LED lamp that informs the replacement of the surge protector 10 through the display unit 120 is turned on process;
The control unit 130 detects a signal inputted from the surge frequency sensing unit 70, the surge current sensing unit 80, the line voltage detection unit 90 and the insulated signal transmission and reception unit 110 ;
Detecting and analyzing the state of the earth leakage breaker which is a connected peripheral device through the insulated signal transmitting and receiving unit 110;
If it is determined that the surge protector 10 is in a normal state, storing the measured value and initiating communication and transmitting the value to the information collection device 30;
Determining that the surge current detected by the surge current detector 80 is one time over 25KA, 3 times over 20KA, or 10 times over 10KA;
If the voltage detected through the line voltage detecting unit 90 is determined as the open of the fuses F1 and F2 or the thermal fuses TH1 and TH2 or the short circuit of the circuit, A process of judging;
A step of determining that the earth leakage breaker detected by the insulated signal transmission and reception unit 110 is defective if it is determined to be defective; And
If the failure or failure of the surge protector 10 or the external peripheral device is defective, a failure corresponding thereto is declared, and an LED lamp for indicating the replacement or failure of the surge protector 10 or the failure of the peripheral device is turned on through the display unit 120 Wherein the method comprises the steps of:

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