KR20000056387A - Power control system for protecting human life and the methods - Google Patents

Power control system for protecting human life and the methods Download PDF

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Publication number
KR20000056387A
KR20000056387A KR1019990005656A KR19990005656A KR20000056387A KR 20000056387 A KR20000056387 A KR 20000056387A KR 1019990005656 A KR1019990005656 A KR 1019990005656A KR 19990005656 A KR19990005656 A KR 19990005656A KR 20000056387 A KR20000056387 A KR 20000056387A
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KR
South Korea
Prior art keywords
leakage current
voltage
step
load
output
Prior art date
Application number
KR1019990005656A
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Korean (ko)
Inventor
이장헌
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이장헌
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Priority to KR1019990005656A priority Critical patent/KR20000056387A/en
Publication of KR20000056387A publication Critical patent/KR20000056387A/en

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Abstract

The present invention provides a data input step for setting a voltage supplied to a load while inputting data corresponding to a threshold value and a threshold leakage current and a threshold voltage at which a current rises, and a threshold input voltage for determining whether an input power supply voltage is greater than or equal to a threshold value. An output voltage determination step for determining whether the voltage detected in the determination step, the voltage detection step for detecting the voltage supplied to the load is a set value, an initial leakage current measurement step for measuring the initial leakage current leaked by the load, and A first judgment step of determining whether the initial leakage current measured in the initial leakage current measurement step is greater than or equal to the threshold; and a criterion for automatically setting the initial leakage current as the reference leakage current if the initial leakage current is less than the threshold as determined in the first judgment step; Leakage current setting step and measuring leakage current supplied to load A leakage current measurement step and a determination step for determining whether the leakage current measured in the leakage current measurement step is greater than or equal to the threshold value or less than the threshold value to determine whether the measured leakage current is higher than or equal to the rising threshold value, thereby preventing personal injury due to a short circuit and keeping constant at the load. The present invention relates to a power protection device for protecting a life and supplying a voltage.

Description

Power control device for life protection and its method {POWER CONTROL SYSTEM FOR PROTECTING HUMAN LIFE AND THE METHODS}

The present invention protects human life by effectively preventing various electrical disasters resulting from electric leakage and electric shock, and prevents fire, and at the same time, supplies a set voltage to a load regardless of input voltage fluctuations. And a method thereof, and more particularly, when connected to an output line of a mechanical leakage breaker (ELB) used in a general home or a factory, when a leakage current of a predetermined value or more is supplied to a load, the automatic leakage current is automatically supplied to the load. The present invention relates to a power control device for protecting a life and protecting the load by sensing and cutting off the power supplied to the load and constantly controlling the voltage supplied to the load regardless of the level of the power supply voltage.

Mechanical earth leakage breaker, which is used as a means to prevent human life due to a short circuit in a normal home or factory, is installed between the meter and the load. The mechanical leakage circuit breaker installed between the meter and the load is set to operate when a leakage current of 15 mA-20 mA or more that is fatal to the human body is protected to protect human life. There is a case that does not operate sensitively even if it occurs, and also if the mechanical leakage breaker is not opened and closed for a long time there is a problem that often caused malfunction due to abnormality in the opening and closing part to suffer human injury.

In addition, there may be a case of electrocution even when the current leakage current of the mechanical leakage circuit breaker is operated, and a human may be electrocuted even when the current leakage current rises sharply. In addition, since the input power supply voltage is supplied to the load, the voltage supplied to the load varies according to the variation of the input power supply voltage, so that a constant voltage cannot be supplied to the load at all times, causing a load breakage or malfunction. there was.

Therefore, the present invention was created to solve the above-mentioned shortcomings, and an object of the present invention is to effectively prevent various electrical disasters resulting from electric leakage and electric shock, to protect human life and prevent fire in advance. The present invention provides a power supply control device and method for protecting personal life that supply a set voltage to a load at all times regardless of variations in input voltage.

In order to achieve the above object, a power protection device for protecting a life according to the present invention is connected to an output line of a meter or an output line of a mechanical earth leakage breaker, and includes a ground fault detection unit for detecting a leakage current, and a signal output from the ground fault detection unit. An analog / digital converter for converting the signal, a current coil for varying the voltage supplied to the load according to the magnetic flux linkage, an input voltage detector for detecting the voltage supplied to the current coil, and a load passing through the current coil. A predetermined control signal is determined by comparing an output voltage detector for detecting a supplied voltage with data corresponding to the leakage current output from the analog / digital converter and the leakage current limit data and the rising leakage current data input and set by the data input unit. Outputs a signal and detects the input voltage detector and the output voltage In addition to outputting a plurality of trigger control signals according to the data output from the system, the overall control of the peripheral devices to operate the load according to the set time, and check the operation and failure of the system to output the data according to the result A system controller, a display and warning sound generator for displaying a leakage current and an input / output voltage according to a control signal output from the system controller and generating a warning sound, and a plurality of trigger control signals output from the system controller, respectively. An output voltage adjusting unit for controlling the voltage supplied to the load by determining the increase and decrease of the magnetic flux chain bridge of the current coil by varying the number of windings of the magnetic flux chain bridge coil coupled to the current coil by the operation of the switching unit. And, to the control signal output from the system controller The switching-part line to block the power supply voltage input when the called overload condition occurs, or the leakage current is characterized.

On the other hand, the method according to the present invention comprises a data input step for setting the voltage supplied to the load while inputting data corresponding to the threshold value and the leakage current and the threshold voltage of the leakage current rises for a predetermined time; A threshold input voltage determination step for determining whether the power supply voltage input in a state where the threshold voltage is set in the data input step is greater than or equal to the threshold value; and detecting the voltage supplied to the load if the input voltage is less than the threshold value as determined by the threshold input determination step. A voltage detecting step for determining whether the voltage detected in the voltage detecting step is a set value; a voltage supply step for supplying an output voltage to the load if the output voltage is a setting value as determined by the output voltage determining step; In the data input step, the rising threshold value and the limit value are An initial leakage current measurement step of measuring an initial leakage current leaked by a load while data corresponding to a current is input, and a first determination step of determining whether an initial leakage current measured in the initial leakage current measurement step is greater than or equal to a threshold value And a reference leakage current setting step of automatically setting the initial leakage current as the reference leakage current when the initial leakage current is less than the threshold as determined in the first determination step, and in the state where the reference leakage current is set in the reference leakage current setting step. A leakage current measurement step of measuring a leakage current supplied to the back and the like, a second judgment step of determining whether the leakage current measured in the leakage current measurement step is greater than or equal to a threshold value, and a leakage measured if the threshold value is less than a result determined by the second judgment step. A third judgment step of determining whether the current is equal to or higher than the rising threshold; It characterized in that the third group determined that the measured leakage current is determined in the step is achieved by binary power-off step that generates a warning sound and at the same time show a leakage check is above the rising threshold and adjusting power supplied to the load.

1 and 2 show a power supply control apparatus according to the present invention.

3 is a flowchart for explaining the operation of the power supply control apparatus according to the present invention;

Explanation of symbols on the main parts of the drawings

1 ... meter 2 ... mechanical earth leakage breaker

4.Earth leakage detector 5 ... 1st amplification unit

6.analog / digital converter 7 ... leakage current generator

8 ... Indication and warning sound 10 ... System controller

20 ... Control time data storage 30 ... Latch

40 ... Unique address storage 50 ... Program storage

60 Data storage section 70 Interface section

75 ... buffer 80 ... amplifier

85 ... overcurrent protection 90 ... switching

100 ... output voltage regulator 110 ... line switching

120 ... load

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

1 and 2 are views showing a power control device according to the present invention. In the same figure, the ground fault detecting unit 4 is connected to the output line of the mechanical ground fault breaker 2 connected to the meter 1 and configured to detect and output a ground fault current, and the amplification unit 5 is the ground fault current detecting unit ( 4) is composed of an operational amplifier (0P), a variable resistor (VR) and a resistor (R1-R3) and the like to amplify and output the signal output from the analog, the analog / digital converter 6 is the amplifier 5 Analog-to-digital converter to convert the signal amplified by the digital signal to the output.

The input voltage detector 104 is connected in series with the load 120 and connects the small transformer TN1 to the front end of the current coil L1 that regulates the voltage supplied to the load 120, so that It is connected to detect the current and the voltage, respectively, and to supply the input port of the system controller 10 through the first amplifier 106, the output voltage detector 105 is a small transformer (TN2) at the rear end of the current coil (L1) ) Is connected to detect the voltage supplied to the load 120 to supply to the input port of the system controller 10 through the first amplifier 106.

The system controller 10 compares the data corresponding to the leakage current output from the analog / digital converter 6 with the leakage current limit data and the rising leakage current data set by the data input unit 17 to determine a predetermined control. In order to output a signal and output a plurality of trigger control signals according to data output from the input voltage detector 104 and the output voltage detector 105, and to operate the load according to a set time. It is to control overall and to check the operation and failure of the system and to output the data according to the result.

Meanwhile, the display and warning sound generator 18 is configured to display a leakage current and an input / output voltage according to the control signal output from the system controller 10 and to generate a warning sound, and the leakage current generator 7 is It is composed of a plurality of switches (S1-Sn) connected in series with the resistors R4-Rn having different values, respectively, and connected to the front end of the ground fault detecting unit 4 in parallel.

The line switching unit 110 is a system controller when an over voltage or over current is supplied to a load or when a system test data is input to the data input unit 17 to test a system and an error occurs or a leakage current exceeding a threshold occurs. It is comprised so that the power supply to a load may be interrupted by the line switching control signal output from (10).

Meanwhile, the input voltage detector 104 connects the small transformer TN1 to the front end of the current coil L1 to detect the current and voltage of the used AC power input to the input terminal, respectively, and the first amplifier 106 transmits the system. It is connected to supply to the input port of the controller 10. In addition, the output voltage detector 105 connects the small transformer TN2 to the rear end of the current coil L1 to detect the voltage supplied to the load 120 and the system controller 10 through the first amplifier 106. It is connected to supply to input port of.

The control time data storage unit 20 is configured with a memory element that stores a time for turning on a lamp, which is the load 120, and the address storage unit 40 is configured with a memory for storing unique data of the power control device. .

On the other hand, the year-end calendar data storage unit 35 is composed of a memory element that stores the data corresponding to the year, month, day, day and time, the latch unit 30 is the data output from the system controller 10 And a plurality of D-type flip-flops serving as latch elements to output an address signal by latching the.

In addition, the interface unit 70 includes an interface for transmitting data corresponding to a result of testing the system, a unique number, and data corresponding to the year, month, day, day of the week, and time to an external device, and the buffer 75. Is configured to buffer an address and supply it to an external device, and the buffer 75 is configured to buffer and output a trigger control signal output from the system controller 10.

On the other hand, the over-current protection unit 85 is output from the system controller 10, the photo sensor (PT1-PT10) respectively operated in accordance with a plurality of trigger control signals passed through the buffer 75 and the second amplifier 80 The high voltage induced in the flux linkage coil L2 described later is not supplied to the system controller 10 or the like.

The switching unit 90 is a magnetic flux linkage coupled to the winding of the current coil L1 and the transistor Q1-Q1O switched according to the operation of the photosensors PT1-PT10 and the operation of the transistors Q1-QlO. It consists of a triac T1-T10 which changes the number of turns of the coil L2, the fuse F which protects the triac T1-T10, and the high resistance R. As shown in FIG.

The operation of the power supply control device having the above embodiment will be described in detail with reference to the flowchart shown in FIG. 3.

With the power control device according to the present invention connected to the output terminal of the mechanical earth leakage breaker 2 as shown in FIG. 1, the data input unit 17 corresponds to the rising threshold leakage current as shown in step S1 of FIG. 3. When the data corresponding to the data and the threshold leakage current and the data corresponding to the threshold input voltage and the output voltage are input, the system controller 70 scans the data and stores the data in the predetermined memory area.

In the state in which data is stored in the memory area as described above, the system controller 10 detects the voltage output from the input voltage detector 104 and amplified by the first amplifier 106 to determine whether the input voltage is greater than or equal to the threshold value in step S2. For example, when the input voltage is greater than or equal to the threshold, the switching control signal is supplied to the line switching unit 110 to cut off the input voltage to protect the load 120 as shown in step S7. ) Is inputted to the voltage amplified by the first amplifier 105 to detect the output voltage as in step S3.

In step S4, it is determined whether the output voltage detected in step S3 is a set value. As a result, the output voltage is supplied to the load 120 as in step S6. If the set value is higher than the set value, the output voltage is adjusted as in step S5. The predetermined trigger control signal is supplied to the photo sensor PT1-PT10 of the overcurrent protection unit 85 through the buffer 75 and the second amplifier 80 so that a constant voltage is always output.

For example, when the voltage of the commercial AC power supplied to the input terminal of the device is lower than a predetermined value, the system controller 10 outputs 10 trigger signals each having a level of 0 0 0 0 1 1 0 0 0 0 to overcurrent protection. When supplied to the unit 85, the photo sensor PT5 and PT6 operate.

When the photosensors PT5 and PT6 are operated, the transistors Q5 and Q6 of the switching unit 90 are “on” so that the triac T5 and T6 operate to operate the magnetic flux of the output voltage adjusting unit 100. The number of windings of the linkage coil L2 is variable to adjust the increase and decrease of the flux linkage so that the voltage output from the current coil L1 is always output a constant voltage regardless of the level of the commercial AC power supplied to the input terminal. Is supplied.

In addition, when the voltage of the commercial AC power supplied to the input terminal of the device is above a certain value or below a certain value, 10 trigger signals each having a level of 1 1 0 0 0 0 0 0 0 0 are output from the system controller 10. When the output is supplied to the over-current protection unit 85, the photo sensor PT1 (PT2) is operated to drive the triac (T1) (T2) of the switching unit 90, accordingly the magnetic flux of the output voltage control unit 100 The number of windings of the coil of the linkage coil L2 is variable so that a constant voltage is always supplied to the load 120. In addition, when the device is initially operated, when the input voltage is above a certain value or below a certain value, a plurality of different trigger signals are output to supply a constant voltage to the load 120.

On the other hand, the ground fault detection unit 4 detects the initial leakage current generated by the load 120 or the wire line connecting the analog and digital conversion unit through the operational amplifier (0P), the resistor and the capacitor of the amplifier 5 It supplies to (6). When the leakage current supplied to the analog / digital converter 6 is converted into a digital signal and supplied to the system controller 10, the system controller 10 measures the initial leakage current as in step S8, and then proceeds to step S9. Further, it is determined whether the measured initial leakage current is above the limit value.

If the initial leakage current is not more than the threshold as a result of the determination in step S9, the initial measured leakage current is automatically set to the reference leakage current as in step S10, and then the flow proceeds to step S11 to measure the leakage current. It is determined in step S12 whether the leakage current measured in the step S11 is equal to or greater than the threshold. For example, if it is not equal to or greater than the threshold, the flow proceeds to step S13 to determine whether it is equal to or greater than the rising threshold.

If the determination result in step S13 is not more than the rising threshold, the power is supplied to the load 120 continuously.

On the other hand, if the result determined in the step S9, S12, S13 is greater than the threshold value or more than the rising threshold value, the drive signal is supplied to the display and warning sound generating unit 8 to display the leak check as in step S14 and generate a warning sound and at the same time the line By operating the switching unit 110 to automatically cut off the power supplied to the load 120 as in step S15 to prevent a short circuit.

In addition, the leakage current generating unit 7 installed at the front end of the ground fault detecting unit 4 generates different leakage currents according to the operation of the switches S1-Sn to automatically cut off the power at the set limit leakage current. The unit can be tested to check for failure of the unit without using special test equipment.

According to the present invention described above, after detecting and comparing the level of the input voltage and the output voltage to the current coil connected in series with the load, a plurality of trigger signals are generated according to the input voltage when the input / output voltage is matched to "0V". By varying the number of windings of the magnetic flux linkage coil coupled to the current coil winding, the output voltage of the current coil is controlled to constantly control the voltage supplied to the load. In addition, when the input voltage is higher than the rated voltage, The number of windings of the magnetic flux linkage coil coupled to the current coil is adjusted to demagnetize the magnetic flux linkage of the current coil. When the input voltage is lower than the rated low pressure, the number of turns of the magnetic flux linkage coil coupled to the current coil is winding. By increasing the magnetic flux linkage of the current coil to always start at the rated voltage to extend the life and efficiency of the device And the cause can be removed, and also so that the work done even when a load that is increased when the start of the constant load current has a write protection device efficiency lowering effect.

It is connected to the output line of the mechanical earth leakage breaker (ELB) and automatically detects when there is over a certain amount of leakage current or overcurrent is supplied to the load, and automatically cuts off the power supply to the load and at the same time, It automatically cuts off the power when it rises, thus protecting people and preventing fires from short circuits.

Claims (2)

  1. An earth leakage detector connected to the output line of the meter or the output line of the mechanical earth leakage breaker and detecting leakage current;
    An analog / digital converter converting the signal output from the ground fault detector into a digital signal;
    A current coil which varies a voltage supplied to a load according to a magnetic flux linkage,
    An input voltage detector for detecting a voltage supplied to the current coil;
    An output voltage detector for detecting a voltage supplied to the load through the current coil;
    The data corresponding to the leakage current output from the analog / digital converter and the leakage current limit value and the rising leakage current data set by the data input unit are compared and judged to output a predetermined control signal and at the same time the input voltage detector and the output. In order to output a plurality of trigger control signals according to the data output from the voltage detector and to control the operation of the load according to the set time, the overall control of peripheral devices and the operation and failure of the system are checked and the data according to the result A system controller that outputs
    A display and warning sound generating unit for displaying a leakage current and an input / output voltage and generating a warning sound according to a control signal output from the system controller;
    A switching unit which operates according to a plurality of trigger control signals output from the system controller,
    An output voltage adjusting unit for controlling the voltage supplied to the load by determining the increase or decrease of the magnetic flux chain bridge amount of the current coil by varying the number of windings of the magnetic flux chain bridge coil coupled to the current coil by the operation of the switching unit;
    Life-saving power supply control device comprising a line switching unit for cutting off the power supply voltage when an overload condition or an over-leakage current occurs according to the control signal output from the system controller.
  2. The data input step of setting the voltage supplied to the load while inputting the data corresponding to the threshold and the threshold leakage current and the threshold voltage at which the leakage current rises for a predetermined time, and the threshold voltage is set at the data input step. A threshold value input voltage judging step for judging whether or not a power supply voltage input in a set state is greater than or equal to a threshold value, a voltage detection step for detecting a voltage supplied to a load if the input voltage is less than the threshold value as determined by the threshold value input judging step, and detecting the voltage An output voltage judging step for judging whether or not the voltage detected in the step is a set value; a voltage supply step for supplying an output voltage to the load if the output voltage is a set value as determined in the output voltage judging step; Data corresponding to the threshold leakage current is input An initial leakage current measurement step of measuring an initial leakage current leaked by the load in a closed state; a first judgment step of determining whether the initial leakage current measured in the initial leakage current measurement step is greater than or equal to a threshold; and the first judgment step If the initial leakage current is less than the threshold value determined in the above, the reference leakage current setting step of automatically setting the initial leakage current as the reference leakage current, and the leakage current supplied to the load or the like while the reference leakage current is set in the reference leakage current setting step is measured. And a second judgment step for determining whether the leakage current measured in the leakage current measurement step is greater than or equal to the threshold value, and if the measured leakage current is greater than or equal to the rising threshold if it is less than the threshold value determined in the second judgment step. Judging from the third judging step and the third judging step Results how the measured leakage current occurs, a warning sound and at the same time show a leakage check is above the rising threshold value and life protective power, characterized in that binary consists of power-off step to cut off the power being supplied to the load control.
KR1019990005656A 1999-02-19 1999-02-19 Power control system for protecting human life and the methods KR20000056387A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019990005656A KR20000056387A (en) 1999-02-19 1999-02-19 Power control system for protecting human life and the methods

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019990005656A KR20000056387A (en) 1999-02-19 1999-02-19 Power control system for protecting human life and the methods

Publications (1)

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KR20000056387A true KR20000056387A (en) 2000-09-15

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KR1019990005656A KR20000056387A (en) 1999-02-19 1999-02-19 Power control system for protecting human life and the methods

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2498154A (en) * 2010-10-06 2013-07-03 Ibm Integrated circuit and interconnect, and method of fabricating same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2498154A (en) * 2010-10-06 2013-07-03 Ibm Integrated circuit and interconnect, and method of fabricating same
GB2498154B (en) * 2010-10-06 2014-05-07 Ibm Integrated circuit and interconnect, and method of fabricating same
US9390969B2 (en) 2010-10-06 2016-07-12 GlobalFoundries, Inc. Integrated circuit and interconnect, and method of fabricating same

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