KR20170106606A - Control Circuit System using Additional Signal of Electronic Watt-Hour Meter - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a latch type electromagnetic contactor circuit system and a driving method of an electronic watt-hour meter, and more particularly, to a technique for starting a circuit for controlling a load by receiving a power supply at a time point or an additional signal of an electronic watt- Type electronic watt-hour meter, a G-type low-voltage electronic watt-hour meter, and the like.
A latch type electromagnetic contactor circuit system and a driving method of an electronic watt hour meter according to the present invention includes a G-type detecting circuit module for sensing and controlling a G-type latch type signal; A low voltage standard detection circuit module for detecting and controlling an open collector signal; A G-type / low voltage standard type composite circuit module for performing control according to a type of a signal input based on a mode selection signal; A time position detection circuit module that maintains a voltage supplied to the central control module and detects and controls a power input signal; And a central control module for controlling and controlling the G-type detection circuit module, the low-voltage standard detection circuit module, the G-type / low-voltage standard integrated circuit module, and the time position detection circuit module.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an electronic watt-hour meter,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a latch type electromagnetic contactor circuit system and a driving method of an electronic watt-hour meter, and more particularly, to a technique for starting a circuit for controlling a load by receiving a power supply at a time point or an additional signal of an electronic watt- Type electronic watt-hour meter, a G-type low-voltage electronic watt-hour meter, and the like.

Generally, electronic equipment is operated by receiving power from an external power source, and a considerable amount of standby power is continuously used even when the electronic equipment is not operated. Standby power refers to the power consumed even when the equipment is turned off. The power consumption is expressed as a product of the voltage and the current, which is the energy consumed by the equipment in operation and the energy per unit time used in the equipment. Conventional latch relays are placed between the watt-hour meter and the equipments and simply serve to supply or block power to each of the equipments. This is because it is not possible to confirm whether the amount of current flowing through each equipment is an overload or an appropriate amount, so that there is a problem that the current can not be directly controlled. Therefore, it is impossible to measure the power consumption and the standby power of the individual facility, so that it is difficult to optimally manage the entire power supply, and power loss is caused thereby. A similar prior art for disclosing a latch-type electromagnetic contactor circuit system and a driving method of an electronic watt-hour meter according to the present invention includes 1) Korean Patent Laid-Open Publication No. 10-2011-0070240 'Intelligent Latch Relay'. The prior art includes a communication unit for transmitting / receiving various data signals between the facility and the watt hour meter to control power consumption and standby power for individual facilities, which are arranged between the watt hour meter and the facilities. A detection unit comprising a PT sensor and a CT sensor for detecting voltage and current supplied to the facility; A switch opening and closing unit for opening and closing the supply and shutoff of the voltage and current supplied to the facility; And a controller for analyzing the voltage and current values detected by the PT sensor and the CT sensor to determine whether or not the power supply system for the facility is abnormal. Other similar prior art techniques include 2) Korean Patent Laid-Open Publication No. 10-2015-0125411 entitled " Watt-hour meter capable of monitoring the state of the built-in latch relay contacts. &Quot; The similar prior art includes a secondary side contact capable of opening and closing to a closed position for supplying power from the power source side to the load side and an open position for supplying and disconnecting power from the power source side to the load side and the secondary side contact point A built-in latch relay having a pair of primary side coils for providing a magnetic force to be closed; And an input latch circuit connected to the built-in latch relay for comparing the input voltage of the primary side coil of the built-in latch relay with the output voltage of the secondary side contact of the built-in latch relay, Determining that the built-in latch relay is in the closed position if the output voltage of the secondary side contact is substantially equal to the output voltage of the contact and within a predetermined tolerance range; And a meter control section for determining that the built-in latch relay is in an open position when the latch relay is in an open position. Another prior art technique includes 3) Korean Utility Model Publication No. 20-2013-0001321 'Two-wire remote control switch using latch relay'. The prior art includes a remote receiver for receiving a signal transmitted from a remote transmitter and a microprocessor for analyzing a received signal to generate a control signal and performing various additional functions. A first rectifying section for rectifying a small amount of alternating current flowing through the current limiting capacitor connected in series with the load to a direct current while the switching element is turned off and a backup capacitor connected in parallel with the load while the load is turned off, A step-up unit for stepping up an AC low voltage corresponding to a diode forward voltage applied to two rectifying diodes connected in parallel in opposite directions to each other in a step-up portion between the first power source line and the switching device while the current flows, A power supply unit including a rectifying unit and a rectifying unit for converting a direct current into a DC voltage required for driving the control unit and the switching device; A two-wire type remote control switch in which one side of the power source unit is connected to an AC power source through a first power source line and the other side is connected to a load via a load line and the other side of the load is connected to a second power source line; The first rectifying portion is full wave rectification and the smoothing capacitor of the constant voltage portion compensates for the instantaneous voltage drop of the constant voltage portion due to the shortage of the current supplied from the constant voltage portion while the pulse voltage is applied to the latch relay There is a feature that discloses a technique using a large-capacity capacitor of a level that can be realized.

However, the above-described prior art prior art does not provide a technology for implementing a control circuit system including a low-pressure standard watt-hour meter and a circuit for shutting off a load-side power supply by receiving an additional signal from a G-type low-voltage electronic watt-hour meter as an input signal.

KR10-2011-0070240 (A) KR10-2015-0125411 (A) KR20-2013-0001321 (U) EP02940484 (A1) US20150316932 (A1)

The present invention aims to satisfy the technical needs required from the background of the above-mentioned invention. Specifically, an object of the present invention is to implement a circuit for controlling a load by receiving an additional signal from a power source at a time or an electronic watt-hour meter in order to provide a latch-type electromagnetic contactor circuit and a driving method of an electronic watt-hour meter. It is an object of the present invention to provide an implementation technique of a control circuit system having a circuit for shutting off a load side power supply by receiving an additional signal from a low-pressure standard watt-hour meter, a G-type low-pressure electronic watt-

The technical objects to be achieved by the present invention are not limited to the above-mentioned problems, and other technical subjects not mentioned can be clearly understood by those skilled in the art from the following description. There will be.

According to an aspect of the present invention, there is provided a latch type electromagnetic contactor circuit system and method for an electronic watt-hour meter, including: a G-type detection circuit module for sensing and controlling a G-type latch type signal; A low voltage standard detection circuit module for detecting and controlling an open collector signal; A G-type / low voltage standard type composite circuit module for performing control according to a type of a signal input based on a mode selection signal; A time position detection circuit module that maintains a voltage supplied to the central control module and detects and controls a power input signal; And a central control module for controlling and controlling the G-type detection circuit module, the low-voltage standard detection circuit module, the G-type / low-voltage standard integrated circuit module, and the time position detection circuit module.

As described above, the present invention has an effect of providing a technique of implementing a circuit for controlling a load by receiving a power supply at a time position or an additional signal of an electronic watt-hour meter. The present invention provides an implementation technique of a control circuit system having a circuit for shutting off a load power source by receiving an additional signal from a low-pressure standard watt-hour meter, a G-type low-voltage electronic watt-hour meter, etc. as an input signal. In addition, since it operates as a latch type and detects a signal input and controls an output, there is a power saving effect that appropriately cuts off the load power. Since the apparatus is configured to be able to select two modes, it is possible to provide a circuit system improved in comparison with a conventional single circuit, because the apparatus has a variety of installation widths, .

It is to be understood that the technical advantages of the present invention are not limited to the technical effects mentioned above and that other technical effects not mentioned can be clearly understood by those skilled in the art from the description of the claims There will be.

1 is a block diagram of a latch type electromagnetic contactor circuit system of an electronic watt hour meter according to the present invention;
2 is a flowchart illustrating a method of driving a time position mode according to the present invention;
3 is a flowchart illustrating an operation method of the G-type mode according to the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings, It is not. In the following description of the present embodiment, the same components are denoted by the same reference numerals and symbols, and further description thereof will be omitted.

Prior to the detailed description of each step of the invention, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary meanings, and the inventor shall design his own invention in the best manner It should be interpreted in the meaning and concept consistent with the technical idea of the present invention based on the principle that the concept of the term can be properly defined. Therefore, the embodiments described in the present specification and the configurations shown in the drawings are only the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. Therefore, It is to be understood that equivalents and modifications are possible.

Referring to FIG. 1, a latch type electromagnetic contactor circuit system of an electronic watt-hour meter according to the present invention includes a G-type detection circuit module 100 for sensing and controlling a G-type latch type signal; A low voltage standard detection circuit module 200 for sensing and controlling an open collector signal; A G-type / low voltage standard type hybrid circuit module 300 for performing control according to the type of a signal input based on the mode selection signal 10; A time position detection circuit module 400 for maintaining a voltage supplied to the central control module 500 and detecting and controlling a power input signal; A central control module for controlling and controlling the G-type detection circuit module 100, the low voltage standard detection circuit module 200, the G-type / low voltage standard integrated circuit module 300 and the time position detection circuit module 400, (500).

The G-type detection circuit module 100 can analyze the signal input from the outside and analyze the type of the signal. In consideration of noise and overcurrent malfunction of the installation site, the use of the mode selection signal 10 switch Is also possible. In addition, the G-type detection circuit module 100 is configured to detect a negative signal and a negative signal in a detection circuit when a G-type latch type signal is input, thereby controlling a SET signal and a RESET signal. In the G-type signal recognition circuit, when + power is connected to the B side of the A side and the power supply is input as the latch signal, the photocoupler of the SET side is activated and VCC is supplied to the SET terminal. However, the photocoupler does not operate in the reverse direction of the diode at the input terminal of the RESET side photocoupler, and the RESET output maintains the low level by the pulled down resistor. On the contrary, when the power is supplied to the A side and the positive power is supplied to the B side as a latch signal, the operation is opposite to the SET situation. The VCC signals on the SET side and the RESET side are input to the central control module 500, and the central control module 500 can perform various controls as output signals.

When a short circuit occurs in the low voltage standard detection circuit module 200, the internal diode is operated to detect a ground level and input to the central control module 500 to determine that the signal is an ON signal, thereby performing control. When a disconnection occurs, a voltage level of +3.3 V is obtained and the voltage level of +3.3 V can be changed, and the central control module 500 determines that there is no signal and performs OFF processing.

The G-type / low voltage standard integrated circuit module 300 is a combination of the G-type detection circuit module 100 and the circuit of the low voltage standard detection circuit module 200, The controller 10 performs control in accordance with the type of the signal inputted as a reference.

The time position detection circuit module 400 divides the voltage of the AC power input through the bridge rectifier circuit with only the minimum capacitor capacity and converts the divided voltage into a level that can be recognized by the central control module 500 . In other words, the AC power input divides the voltage by only the minimum capacitor capacitances CE6 and CE8 in the signal passing through the bridge rectifier circuit, and converts the divided voltage into a level that the central control module 500 can recognize. Through this, it quickly recognizes the supply and cutoff of the main power supply and makes the load supply and cutoff work together. At this time, a proper circuit is held to maintain the voltage supplied to the central control module 500.

Referring to FIG. 2, a method of driving a time-position mode of a latch-type magnetic contactor circuit system of an electronic watt-hour meter according to the present invention includes: (S100) blocking a latch output signal and initializing a variable; Confirming whether an input signal is in a time position mode (S200); If it is determined in step S200 that the mode is the time position mode, it is checked whether the input voltage is lower than 50% of the power supply voltage (S300A). If the input voltage is lower than 50% of the power supply voltage in step S300A, checking whether the corresponding condition is maintained for 20 ms or longer (S310A); A step S320A of outputting a latch OFF signal when it is confirmed that the signal is maintained for more than 20 ms in the step S310A; Confirming whether the latch OFF signal has been output for 70ms in operation S320A (S330A); (S400A) if the latch OFF signal is confirmed to be output for 70ms in step S330A; Confirming whether the time position mode is changed when the latch output signal is interrupted in operation S400 (S500); After the step S500 is completed, the variable is reinitialized and terminated (S600). If it is determined in step S300A that the input voltage is not lower than 50% of the power supply voltage, checking whether the input voltage is maintained for 80ms or longer (S311A); If it is confirmed in step S311A that it is maintained for more than 80 ms, a step S321A of outputting a latch OFF signal; (S331A) of checking whether the latch OFF signal is outputted for 70 ms in step S321A.

In addition, a standard mode driving method of a latch type electromagnetic contactor circuit system of an electronic watt hour meter (S100) includes blocking a latch output signal and initializing a variable; Confirming whether an input signal is in a time position mode (S200); If it is determined in step S200 that the mode is not the time position mode, it is checked whether a latch ON signal is input (S300B). If it is determined in step S300B that the latch ON signal is input, it is checked whether the latch ON signal is inputted for 300 ms or longer (S310B). If it is determined in step S310B that the latch ON signal is input for 300 ms or more, outputting the latch ON signal (S320B); Checking whether the latch ON signal has been output for 70ms at step S320B (S330B); Blocking the latch output signal if it is determined in step S330B that the latch ON signal has been output for 70ms (S400B); If it is determined in step S400B that the latch output signal is interrupted (S500); After the step S500 is completed, the variable is reinitialized and terminated (S600). If it is determined in step S300B that the latch ON signal is not input, step S311B is performed to check if the latch ON signal is not input for 300 ms. If it is determined in step S311B that the latch ON signal has not been input for 300ms, outputting a latch OFF signal (S321B); (S331B) checking whether the latch OFF signal has been output for 70 ms in step S321B.

Referring to FIG. 3, a G-type mode driving method of a latch type electromagnetic contactor circuit system of an electronic watt hour meter according to the present invention includes a step S100C of intercepting a latch output signal and initializing a variable; Confirming whether the input signal is a G-type mode (S200C); If it is determined in step S200C that the mode is the G-type mode, it is checked whether a latch ON signal is inputted (S300C). Checking whether the latch ON signal is inputted for more than 50 ms in step S300C (S310C); If it is determined in step S310C that the latch ON signal has been input for 50 ms or longer, outputting the latch ON signal (S320C); Checking whether the latch ON signal has been output for 100 ms in step S320C (S330C); If it is determined in step S330C that the latch ON signal has been output for 100ms, step S400C of re-intercepting the latch output signal; Confirming whether the G-type mode is changed if the latch output signal is interrupted in step S400C (S500C); (S600C) of re-initializing the variable when the step S500C is completed. If it is determined in step S300C that the latch ON signal is not inputted, it is checked whether the latch OFF signal is input (S311C). If it is determined in step S311C that the latch OFF signal is input, it is checked whether the input signal is received for more than 50 ms (S321C); And outputting the latch OFF signal when it is determined in step S321C that the latch OFF signal is input for 50 ms or more (S331C); And checking whether the latch OFF signal is outputted for 100 ms in step S331C (S332C).

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, will be. Accordingly, the true scope of the present invention should be determined only by the appended claims.

Claims (13)

A latch type electromagnetic contactor circuit system of an electronic watt hour meter,
A G-type detection circuit module 100 for detecting and controlling a G-type latch type signal;
A low voltage standard detection circuit module 200 for sensing and controlling an open collector signal;
A G-type / low voltage standard type hybrid circuit module 300 for performing control according to the type of a signal input based on the mode selection signal 10;
A time position detection circuit module 400 for maintaining a voltage supplied to the central control module 500 and detecting and controlling a power input signal;
A central control module for controlling the G-type detection circuit module 100, the low voltage standard detection circuit module 200, the G-type / low voltage standard integrated circuit module 300 and the time position detection circuit module 400, (500). ≪ / RTI > The method according to claim 1,
The G-type detection circuit module 100 is capable of analyzing the type of a signal input from the outside and can use the switch of the mode selection signal 10 in consideration of noise and overcurrent malfunction of the installation site Wherein the first and second contacts are electrically connected to each other. The method according to claim 1,
Wherein the G-type detection circuit module (100) senses a negative signal and a negative signal in a detection circuit when a G type latch type signal is input, and controls a SET signal and a RESET signal. The method according to claim 1,
When a short circuit occurs in the low voltage standard detection circuit module 200, an internal diode is operated to detect a ground level and input to the central control module 500, Magnetic contactor circuit system. 5. The method of claim 4,
When the breakdown occurs in the low voltage standard detection circuit module 200, the voltage level becomes + 3.3V and the voltage level of + 3.3V can be changed, and the central control module 500 determines that there is no signal, Type magnetic contactor circuit system. The method according to claim 1,
The G-type / low voltage standard integrated circuit module 300 is a combination of the G-type detection circuit module 100 and the circuit of the low voltage standard detection circuit module 200, Wherein the control circuit performs control in accordance with the type of the signal inputted on the basis of the reference signal (10). The method according to claim 1,
The time position detection circuit module 400 divides the voltage of only the capacitor capacity of the AC power supply input through the bridge rectification circuit to a level that can be recognized by the central control module 500 and inputs the converted voltage Type contactor circuit system. A method of driving a time-position mode of a latch-type electromagnetic contactor circuit system of an electronic watt-
Blocking the latch output signal and initializing the variable (S100);
Confirming whether an input signal is in a time position mode (S200);
If it is determined in step S200 that the mode is the time position mode, it is checked whether the input voltage is lower than 50% of the power supply voltage (S300A).
If the input voltage is lower than 50% of the power supply voltage in step S300A, checking whether the corresponding condition is maintained for 20 ms or longer (S310A);
A step S320A of outputting a latch OFF signal when it is confirmed that the signal is maintained for more than 20 ms in the step S310A;
Confirming whether the latch OFF signal has been output for 70ms in operation S320A (S330A);
(S400A) if the latch OFF signal is confirmed to be output for 70ms in step S330A;
Confirming whether the time position mode is changed when the latch output signal is interrupted in operation S400 (S500);
(S600) of re-initializing and terminating the variable when the step S500 is completed. 9. The method of claim 8,
If the input voltage is not lower than 50% of the power supply voltage in step S300A, it is checked whether the corresponding condition is maintained for more than 80 ms (S311A);
If it is confirmed in step S311A that it is maintained for more than 80 ms, a step S321A of outputting a latch OFF signal;
(S331A) checking whether the latch OFF signal has been outputted for 70 ms in step S321A. A method of driving a standard type mode of a latch type electromagnetic contactor circuit system of an electronic watt-
Blocking the latch output signal and initializing the variable (S100);
Confirming whether an input signal is in a time position mode (S200);
If it is determined in step S200 that the mode is not the time position mode, it is checked whether a latch ON signal is input (S300B).
If it is determined in step S300B that the latch ON signal is input, it is checked whether the latch ON signal is inputted for 300 ms or longer (S310B).
If it is determined in step S310B that the latch ON signal is input for 300 ms or more, outputting the latch ON signal (S320B);
Checking whether the latch ON signal has been output for 70ms at step S320B (S330B);
Blocking the latch output signal if it is determined in step S330B that the latch ON signal has been output for 70ms (S400B);
If it is determined in step S400B that the latch output signal is interrupted (S500);
And re-initializing the variable when the step S500 is completed (S600). 11. The method of claim 10,
If it is determined in step S300B that the latch ON signal is not inputted, it is checked whether the latch ON signal is inputted for 300ms (S311B).
If it is determined in step S311B that the latch ON signal has not been input for 300ms, outputting a latch OFF signal (S321B);
And a step (S331B) of checking whether the latch OFF signal is outputted for 70ms in the step S321B. A method of driving a G-type mode of a latch type electromagnetic contactor circuit system of an electronic watt-
Interrupting the latch output signal and initializing a variable (S100C);
Confirming whether the input signal is a G-type mode (S200C);
If it is determined in step S200C that the mode is the G-type mode, it is checked whether a latch ON signal is inputted (S300C).
Checking whether the latch ON signal is inputted for more than 50 ms in step S300C (S310C);
If it is determined in step S310C that the latch ON signal has been input for 50 ms or longer, outputting the latch ON signal (S320C);
Checking whether the latch ON signal has been output for 100 ms in step S320C (S330C);
If it is determined in step S330C that the latch ON signal has been output for 100ms, step S400C of re-intercepting the latch output signal;
Confirming whether the G-type mode is changed if the latch output signal is interrupted in step S400C (S500C);
And when the step S500C is completed, re-initializing and terminating the variable (S600C). 13. The method of claim 12,
If it is determined in step S300C that the latch ON signal is not inputted, it is checked whether the latch OFF signal is input (S311C).
If it is determined in step S311C that the latch OFF signal is input, it is checked whether the input signal is received for more than 50 ms (S321C);
And outputting the latch OFF signal when it is determined in step S321C that the latch OFF signal is input for 50 ms or more (S331C);
And checking whether the latch OFF signal has been output for 100 ms in step S331C (S332C).

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