KR101738618B1 - Multiconcent and control method thereof - Google Patents

Abstract

A multi-outlet according to an embodiment of the present invention includes a standby power cut-off unit 110 for receiving commercial AC power and supplying power to the electric equipment and selectively interrupting standby power; A constant current tube 112 for receiving commercial AC power and supplying constant power to the electric device; An individual switch 121 for selectively shutting off the power supplied from the standby power cut-off port 110 and the normally-closed communication port 112; A normal energization switching switch 126 for switching the stand-by power cut-off device 110 so that power can be supplied at all times; And a control unit (180) for controlling the standby power of the electric device connected to the standby power cut-off unit (110) to selectively shut off the standby power.
According to the embodiment of the present invention as described above, when a surge is input from a commercial AC power source supplied to the multi-outlet, it is possible to prevent the breakage of the electrical equipment connected to the multi-outlet and the malfunction of the software.

Description

Technical Field [0001] The present invention relates to a multi-

The present invention relates to a multi-outlet and a control method thereof, and more particularly, to a multi-outlet having a multi-function that cuts off abnormal power supplied from a power source, saves energy, .

The outlet is a mechanism for inserting the plug by connecting it to the wiring for connecting the cord used indoors in the indoor wiring of electricity. In the present invention, the multi-outlet includes a plurality of inserting holes for inserting the plug, and includes a wall-surface-type socket and a wall- And a table tap (multi tap).

The power consumed by the appliance while the appliance is turned off is called the standby power. Standby power is used to prepare the appliance for use when the appliance is turned off, but the power plug is plugged in. That is, the electrical product is not substantially used by the user, but power is continuously consumed.

In recent years, efforts have been made to reduce electric power demand in a situation where power demand is soaring and power supply shortage is a problem. According to the International Energy Agency, about 10 to 15% of the average power consumption of OECD member countries is consumed as standby power, and in neighboring Japan, it is reported that about 12% of the annual power consumption is consumed as standby power.

In recent years, the use of various electric appliances is increasing at a rapid pace, and power plugs of several electric appliances are connected to one multi-outlet in the home or office. At this time, although the multi-outlet has a power-off switch capable of shutting off the power, it is often troublesome or forgetting to turn off the power-off switch provided in the multi-outlet when the user turns off the power.

In addition, in the conventional multi-outlet, the power is shut off uniformly by the power-off switch for interrupting the standby power, so that there is a problem that the power can not be shut off depending on the capacity of the electrical product connected to the multi-outlet.

An object of the present invention is to provide a multi-outlet that can protect an electrical product from surges caused by lightning or the like.

Another object of the present invention is to provide a multi-receptacle capable of detecting a power state of the computer and interrupting power supplied to peripheral devices according to the state of the computer.

Another object of the present invention is to provide a multi-receptacle in which a standby power reference value can be set by a user's setting.

According to an aspect of the present invention, there is provided a multi-outlet including: a standby power cut-off unit for receiving commercial AC power and selectively supplying power to an electric device and selectively interrupting standby power; A constant current tube 112 for receiving commercial AC power and supplying constant power to the electric device; An individual switch 121 for selectively shutting off the power supplied from the standby power cut-off port 110 and the normally-closed communication port 112; A normal energization switching switch 126 for switching the stand-by power cut-off device 110 so that power can be supplied at all times; And a control unit (180) for controlling the standby power of the electric device connected to the standby power cut-off unit (110) to selectively stop the standby power.

And a setting switch 128 for setting a level of standby power to be cut off through the standby power cut-off port 110. [

And a surge protector 172 for protecting electrical equipment connected to the standby power cut-off port 110 and the constant power supply port 112 from a surge input via a commercial AC power source.

And an inductive and load breaker 122 for blocking the inductive overload by measuring the power factor of the electrical apparatus connected to the standby power cut-off port 110 and the normally-closed conduit 112.

And a USB connector 160 for USB communication. The USB connector 160 is connected to the USB of a computer connected to the standby power cut-off port 110, It is possible to selectively cut off the power of the power cut-off port 110 and other standby power cut-off ports 110 connected to the peripheral devices of the computer.

The display unit 130 may further include power consumption, power factor, and mode of the electrical apparatuses connected to the standby power cut-off port 110 and the constant vent hole 112.

A wireless communication unit 153 for remote control or a wired communication unit 151 for control through home networking.

The wireless communication unit 153 may be any one of infrared communication, Zigbee communication, Bluetooth communication, Wi-Fi, or RF communication.

The wired communication unit 151 may be any one of Ethernet communication or RS232 or RS485.

And an audio output unit 140 for outputting the state of the standby power cutoff unit 110 by voice.

And a standby power switch 124 for turning off the standby power of the electric device connected to the standby power cut-off device 110 and returning the standby power cut-off device 110 to its original state.

A method of controlling a multi-outlet according to another embodiment of the present invention includes a standby power shut-off port 110, a constant current port 112, a wireless communication unit 153, a wired communication unit 151, a USB connector 160, A control method of a multi-outlet including a control switch (129), a setting switch (128), a standby power switch (124), a normally energizing switch (126) ; If the voltage level is lower than the operation reference voltage, interrupting the power output to the standby power shutoff port 110 and the constant power port 112 by storing the set value; Processing the input communication signal when the voltage level is higher than the operation reference voltage and a communication signal is inputted through the wireless communication unit 153 or the wired communication unit 151; If the communication signal is not inputted through the wireless communication unit 153 or the wired communication unit 151, checking the sleep time and entering the sleep mode may be performed.

And processing each switch input signal if the sleep time is less than the switch input wait time.

The step of processing the communication signal may include: determining whether the signal is a status request signal of the multi-outlet; Determining whether the signal is a control signal of the multi-outlet if the signal is not the status request signal of the multi-outlet; And controlling the standby power switching if the control signal of the multi-outlet is a signal for controlling switching of the standby power of the standby power cut-off device 110. [

The step of controlling the standby power switching may include the steps of: determining whether one of the standby power cut-off devices 110 is in the normally-energized state; And checking the overload of the standby power cut-off port 110 when all of the standby power cut-off ports 110 are in the normal energized state.

When the standby power switching switch 124 is input, the process enters a step of learning standby power, and when the standby power learning step ends, a step of determining whether the mode switch 129 is in a computer mode is entered, If the standby power changeover switch 124 is not input, it may enter the step of processing the respective switch input signals.
The step of learning the standby power includes:

If the standby power learning value LpreW does not exist, the controller determines whether the standby power learning value LpreW exists by learning the standby power. If the standby power learning value LpreW does not exist, NoW) and determines whether the standby power value preW exists. If the standby power value preW does not exist, the current power NoW is stored as the standby power value preW, (preW) exists, the current power NoW is compared with the standby power value preW, and when the current power NoW exceeds the standby power value preW, the standby power value preW is multiplied by a constant value If the current power NoW exceeds the value obtained by multiplying the standby power value preW by a constant value, the standby power value preW is stored as the standby power learning value LpreW The step of terminating the standby power learning and determining whether the mode switch 129 is in the computer mode You can also.

If the standby power value preW does not exist, measuring the current power NoW of the electric device connected to the standby power cut-off device 110 and setting the current power NoW to the standby power value .

Determining whether the standby power value preW has exceeded the standby power allowance time if the standby power value preW is greater than or equal to the current power NoW or the value obtained by multiplying the standby power value preW by a predetermined value is equal to or greater than the current power NoW; As shown in FIG.

Ending the standby power learning and determining whether or not the computer mode is satisfied; And shutting off the power output from the standby power cut-off port 110.

If the mode switch 129 is in the computer mode, the USB voltage of the computer connected to the standby power cut-off port 110 is measured. If the USB voltage is on, the standby power cut- .

If the mode switch 129 is turned off and is not in the computer mode, it may enter the step of checking the overload of the standby power shutoff port 110.

If all of the standby power cut-off devices 110 are in the normal power-on state, the process may proceed to a step of checking the overload of the standby power cut-off device 110.

The step of checking the overload of the standby power cut-off port 110 may include: measuring a voltage level of a commercial AC power supply; If the voltage level is lower than the operation reference voltage, interrupting the power output to the standby power shutoff port 110 and the constant power port 112 by storing the set value; Calculating a current power (NoW) by measuring a current (i) level and a power factor of each standby power cutoff port (110) when the voltage level exceeds the operation reference voltage; Comparing the standby power learning value LpreW with the measured current power NoW; If the standby power learning value LpreW is less than the current power, it is determined whether the current of one of the standby power cut-off devices 110 is larger than the maximum current of the multi-outlet or the sum of the currents of the standby power cut- Is greater than a maximum current of the multi-outlet.

Determining whether each of the standby power cut-off devices (110) is in the normally-energized state when the standby power learning value (LpreW) exceeds the current power (NoW); Determining whether or not the standby power cut-off device 110 has exceeded the standby power allowable time if the standby power cut-off device 110 is not in the normally-energized state; And if the standby power allowable time has been exceeded, shutting off the power of the standby power cut-off device 110 and ending the standby power mode operation.

If the standby power allowable time is not exceeded, or when any one of the standby power cut-off devices 110 is in the energized state, the process may proceed to the step of processing each switch input signal.

If the sum of the currents of the respective standby power cut-off ports 110 is less than the maximum current of the multi-outlet, the process can be started.

If the sum of the currents of the respective stand-by power cut-off ports 110 exceeds the maximum current of the multi-outlet, the overcurrent cut-off processing step can be entered.

Determining whether the current of the one of the standby power cut-off ports (110) exceeds the maximum current of the multi-outlet, whether the overcurrent allowable time has been exceeded; And detecting an overcurrent load and shutting off the power of the standby power cut-off port 110 when the overcurrent permission time is exceeded.

Wherein the overcurrent cutoff processing step includes the steps of: determining whether the overcurrent allowable time has been exceeded; If the overcurrent allowable time is not exceeded, entering a step of processing a mode according to the input of each of the switches; learning the overcurrent load if the overcurrent allowable time has been exceeded; And a step of comparing the currents of the respective standby power cut-off devices 110 to cut off the power of the standby power cut-off device 110 having a large current value.

The step of processing each switch input signal may include: determining whether the mode switch 129 is input; Determining whether the setting switch 128 is input if the mode switch 129 is not input; If the setting switch 128 is not inputted, determining whether the normal energizing switch 126 is input; Determining whether the standby power switching switch 124 is input if the normal power switching switch 126 is not input; Determining whether any one of the standby power cut-off devices 110 is in a power-on state, determining whether the standby power cut-off device 110 is in a power-on state or not in a computer mode; Determining whether the USB voltage is ON or OFF if the mode is the computer mode; And shutting off all the standby power cut-offs 110 and terminating the computer mode when the USB voltage is off.

If the USB voltage is turned on, it is possible to check the overload of the standby power cut-off device 110. [

When the setting switch 128 is input, the standby power learning value corresponding to the input of the setting switch 128 can be increased or decreased.

When the normal energization switching switch 126 is inputted, it is possible to enter the step of controlling the standby power switching.

When the standby power switch 124 is input, determining whether all the standby power cut-off devices 110 are in the normally-energized state; If all of the standby power cut-off devices 110 are in the normal power-on state, the process may proceed to a step of checking the overload of the standby power cut-off device 110.

According to the multi-receptacle and the multi-receptacle control method using the same according to the embodiment of the present invention, when a surge is input from the commercial AC power supplied to the multi-receptacle, Can be prevented.

In addition, the on / off state of the computer connected to the multi-outlet can be grasped and the power supplied to the computer peripheral devices can be selectively shut off, thereby reducing power consumption.

Further, by allowing the multi-outlet to be controlled remotely through the wired communication unit 151 and the wireless communication unit 153, convenience for the user can be improved.

These drawings are for the purpose of describing an exemplary embodiment of the present invention, and therefore the technical idea of the present invention should not be construed as being limited to the accompanying drawings.
1 is a conceptual view showing a configuration of a multi-receptacle according to an embodiment of the present invention.
2 is a block diagram showing an internal configuration of a multi-outlet according to an embodiment of the present invention.
3 to 11 are flowcharts showing a method of controlling a multi-outlet according to another embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art to which the present invention pertains. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In order to clearly illustrate the present invention, parts not related to the description are omitted, and the same or similar components are denoted by the same reference numerals throughout the specification.

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. .

Hereinafter, the configuration of a multi-receptacle according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a conceptual view showing a configuration of a multi-receptacle according to an embodiment of the present invention. 2 is a block diagram showing an internal configuration of a multi-outlet according to an embodiment of the present invention.

As shown in FIGS. 1 and 2, a multi-outlet according to an embodiment of the present invention includes a standby power cut-off port 110 for receiving a commercial AC power and supplying power to an electric device and selectively blocking standby power, An auxiliary switch 121 for selectively interrupting the power supplied from the standby power blocking port 110 and the standby power blocking port 112, A normal energization switching switch 126 for switching the standby power cut-off port 110 so as to be able to supply power at all times and a standby power of the electric device connected to the standby power cut-off port 110, And a control unit 180 for controlling so as to shut off the power supply.

The control unit 180 measures the standby power of the electric device connected to the standby power cut-off port 110. If the measured standby power is equal to or less than the set value, the control unit 180 cuts off the power output from the standby power cut- .

The controller 180 may be an engine control unit (ECU) for controlling various electronic devices. The control unit 180 may be provided with one or more processors operating according to a set program, and the set program performs each step of the method of controlling the multi-outlet according to the embodiment of the present invention.

An electrical device such as a refrigerator or the like, to which power is always supplied, is connected to the constant-

The individual switch 121 is a switch that cuts off the commercial AC power supplied to each of the standby power cut-off port 110 and the constant air vents 112 by the user's choice.

The normal energization power switch performs a function of supplying the constant power source such as the constant air bag 112 without performing the standby power interruption function to the standby power interrupter 110.

The multi-outlet according to the embodiment of the present invention may further include a setting switch 128 for setting a level of standby power to be cut through the standby power cut-off port 110. [

The setting switch 128 sets the standby power of the electric device connected to the standby power cut-off device 110 according to the setting of the user, thereby blocking the standby power according to the characteristics of the electric device.

The multi-outlet according to the embodiment of the present invention includes a surge protector 172 for protecting electrical devices connected to the stand-by power cut-off port 110 and the constant power supply port 112 from a surge input via a commercial AC power source .

The surge protector 172 blocks the overvoltage and the overcurrent when the lightning strike or the inrush current intrudes from the outside through the input cable through which the commercial AC power is input, Thereby protecting the electric device connected to the power source. The surge protector 172 may be a combination of a varistor or surge observer for overvoltage shutdown and a PTC thermistor for overcurrent shutdown.

The multi-outlet according to the embodiment of the present invention may further include an overload breaker 122 for blocking the inductive overload by measuring the power factor of the standby power cut-off port 110 and the electric device connected to the constant- can do.

Generally, the multi-outlet is provided with an overload shut-off switch for overload shut-off, but the shut-off may be delayed in the case of an inductive load. Therefore, the inductance and the load circuit breaker 122 are configured to be able to respond to the inductive load in the internal circuit of the multi-outlet.

The multi-receptacle according to the embodiment of the present invention may further include a USB connector 160 for USB communication. The USB connector 160 is connected to a USB of a computer connected to the standby power cut-off port 110 and is connected to a standby power cut-off port 110 connected to the computer according to the power state of the computer, The power of the other standby power cut-off port 110 can be selectively cut off.

That is, when the voltage output from the USB port becomes '0', the computer can be judged to be turned off by detecting the voltage output from the USB port of the computer. Accordingly, it is possible to prevent power consumption from being wasted by turning off power supplied to peripheral devices (e.g., printers, scanners, etc.) of the computer.

The multi-outlet according to the embodiment of the present invention may further include a display unit 130 for displaying the power consumption, the power factor, and the computer mode of the electrical apparatus connected to the standby power cut-off port 110 and the constant vent hole 112 .

The display unit 130 displays the power consumption, the power factor, and the mode of the electric devices connected to the respective outlets, thereby improving the usability of the user.

The multi-outlet according to the embodiment of the present invention may further include a mode switch 129. The mode switch 129 is for switching the mode of the multi-outlet, and serves to switch from the normal mode to the computer code. Here, the computer mode refers to a mode for selectively interrupting the power supplied to the computer peripheral by sensing the voltage output through the USB port of the computer as described above. In other words, the normal mode means not the computer mode, and it does not detect the voltage output through the USB port of the computer. Accordingly, when the mode switch 129 is turned on to select the computer mode, the controller determines whether the load on the standby power cut-off port 110 is a computer. If a voltage output through the USB port is detected, Standby power is not cut off even when the sleep mode is set to the sleep mode so that the power of the computer is not cut off. The mode switch 129 sets whether or not to display the power consumption, the power factor, and the computer mode on the display unit 130.

When a general USB device is connected to the USB connector of the multi-outlet, the USB device 160 is configured to charge the USB device.

The multi-outlet according to the embodiment of the present invention may further include a standby power switch 124. [ The standby power switching switch 124 functions to turn off the standby power cut-off device 110 and then turn it back on. That is, the power outputted from the standby power cutoff port 110 is turned on / off by the relay 186 shown in FIG. 2, and the role of turning on the relay 186 is switched to the standby power switching switch 124, Lt; / RTI >

The multi-outlet according to the embodiment of the present invention may further include a wireless communication unit 153 for remote control or a wired communication unit 151 for control through home networking.

At this time, the wireless communication unit 153 may be any one of infrared communication, Zigbee communication, Bluetooth communication, Wi-Fi or RF communication. That is, the wireless communication unit 153 is provided to remotely control the multi-outlet according to the embodiment of the present invention through a remote controller or the like.

The wired communication unit 151 may be any one of Ethernet communication or RS232 or RS485. The wired communication unit 151 is generally for interfacing with a home networking function provided in the home. Accordingly, when the home networking is connected to the home through the wired communication unit 151, the multi-outlet can be controlled through home networking in the home.

The multi-outlet according to the embodiment of the present invention may further include an audio output unit 140 for outputting the state of the standby power cut-off port 110 by voice. That is, the user can easily recognize the use state of the multi-outlet by outputting a voice indicating the standby power and the energized state of the multi-outlet.

Hereinafter, a method of controlling a multi-outlet according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

3 to 11 are flowcharts showing a method of controlling a multi-outlet according to another embodiment of the present invention.

First, as shown in FIG. 3, the voltage level V of the commercial AC power is measured (S10).

If the voltage level V is lower than the operation reference voltage at step S20, the set value is stored at step S22 and the power output to the standby power cut-off port 110 and the constant power supply port 112 is cut off. That is, when the commercial AC power source is smaller than the set value, the power supplied to the electrical equipment connected to the multi-outlet according to the embodiment of the present invention may be insufficient. In such a case, there is a possibility that the electric device malfunctions.

When the voltage level is higher than the operation reference voltage and the communication signal is input through the wireless communication unit 153 or the wired communication unit 151 (S30), the process enters the step of processing the input communication signal.

If a communication signal is not inputted through the wireless communication unit 153 or the wired communication unit 151, the sleep time is checked (S40), and the sleep mode is entered. In other words, when the multi-outlet is not in operation, the power consumption is minimized by automatically switching to the sleep mode and not consuming the self-power.

And, if the sleep time is less than the switch input wait time, the process proceeds to step S400 of processing each switch input signal.

Next, the process of processing the communication signal will be described.

As shown in FIG. 4, the processing of the communication signal determines whether the status request signal of the multi-outlet is received (S810). The receipt of the status request signal means that the remote controller such as the remote controller for requesting the status information of the multi-outlet to request status information of the multi-outlet when remotely controlling the multi-outlet through the wired communication unit or the wireless communication unit .

If the status request signal of the multi-outlet is not received, it is determined whether a control signal for controlling the multi-outlet is received (S820).

Upon receiving the control signal for controlling the multi-outlet, it is determined whether to control the standby power switch 110 to switch the standby power (S830). If the standby power cut-off device 110 does not control the standby power switching, it is determined whether any one of the standby power cut-off devices 110 is energized (S840).

When one of the standby power cut-off ports 110 is energized, the process goes to a step of checking the overload of the standby power cut-off port 110 (S100), and when one of the standby power cut-off ports 110 is energized Otherwise, the process returns to step S1.

In the case of controlling the standby power switching of the standby power cut-off device 110 in step S830, the process goes to step S500 of controlling standby power switching.

In step S500 of controlling the standby power switching, it is determined whether any of the standby power cut-off devices 110 is in the normally-energized state as shown in Fig. 5 (S510, S520).

If the first standby power cut-off device 110 is normally energized, the second standby power cut-off device 110 is set to the standby power mode (S512). When the second standby power cut-off device 110 is in the normal power-on state, the first standby power cut-off device 110 is set to the standby power mode (S522). If all of the standby power cut-off devices 110 are in the normal power-on state, all the standby power cut-off devices 110 are set to the standby power mode (S532).

If it is determined that the standby power switching switch 124 has been input (S550), the standby power switching switch 124 is operated to enter a step of learning standby power, (S300). If the standby power switch 124 is not inputted, the process goes to a step of processing each switch input signal (S400).

If all the standby power cut-off devices 110 are in the normal power-on state (S540), the process goes to step S100 of checking the overload of the standby power cut-off device 110. [

Here, the step of learning the standby power (S300) determines whether or not the standby power learning value LpreW through learning of the standby power exists. If there is no standby power learning value LpreW, The current power NoW of the electric device connected to the standby power cut-off device 110 is measured (S320).

If the standby power value preW does not exist, the current power NoW is stored as the standby power value preW, and if the standby power value preW does not exist, (preW), the current power NoW is compared with the standby power value preW (S324).

If the current power NoW exceeds the standby power value preW, the standby power value preW is compared with a predetermined value (value squared in one embodiment) and the current power NoW at step S326. The predetermined value is a power fluctuation error value obtained by measuring a voltage fluctuation value at an arbitrary value and calculating a power fluctuation value therefrom. Even when the same load is applied to the AC line, the voltage changes and there is a power change. Therefore, the standby power value preW is determined by multiplying the standby power value preW by a constant value corresponding to the power fluctuation error value, thereby automatically learning a meaningful power fluctuation to the standby power learning value LpreW.

If the current power NoW exceeds the value obtained by multiplying the standby power value preW by a predetermined value, it is determined whether or not the standby power value preW is stored as the standby power learning value LpreW (S328) When the power learning value LpreW is stored, the standby power learning is terminated (S330), and it is determined whether the mode switch 129 is in the computer mode (S340).

7, the USB voltage of the computer connected to the standby power cut-off port 110 is measured. If the USB voltage is on (S610), all the standby power cut-off ports 110 It is switched to the normally energized state (S620). That is, if the USB voltage is applied while waiting for the USB voltage to be input, the standby power cutoff port 110 is switched to the normally energized state.

Referring again to FIG. 6, if the computer mode is not selected in step S340, the process goes to step S100 of checking the overload of the standby power cut-off device 110. FIG.

If the standby power value preW does not exist in step S322, the current power NoW is set to the standby power value preW (step S323), and the flow returns to step S324.

If the current power NoW is equal to or less than the standby power value preW, it is determined whether or not the standby power allowable time has been exceeded (S352).

If the standby power allowable time is exceeded, the standby power learning ends (S354), and it is determined whether or not the computer mode is set (S356). If it is in the computer mode, the computer mode is terminated (S358), the power of the standby power cut-off device 110 is cut off (S360), and the process returns to S1.

Meanwhile, the step S100 of checking the overload of the standby power cut-off device 110 measures the voltage level of the commercial AC power as shown in FIG. 8 (S110).

If the voltage level is lower than the operation reference voltage at step S120, the setting value is stored at step S122, and a standby power cutoff announcement voice is output through the voice output unit 140. Then, the standby power cutoff port 110 and the constant- (Step S124).

If the voltage level exceeds the operation reference voltage (S120), the current level (i) and the power factor of each standby power cutoff port 110 are measured to calculate the current power NoW. In other words, the power factor refers to the ratio of the effective power to the apparent power, and refers to the ratio of the power actually working to the total input power. In a dc circuit, the product of the voltage and the current is the power, but in the ac circuit, the product of the current and the effective value of the voltage is not necessarily the power. In the AC circuit, the product of the voltage and the current is called the apparent power and is multiplied by the power factor. This is because the voltage or current of the alternating-current circuit fluctuates in the form of a sinusoidal wave (sinusoidal wave), and sinusoidal phases of the alternating-current circuit do not always coincide with each other. When the difference in phase angle is denoted by?, The voltage is V, and the current is I, the effective power is VI cos ?. Since the apparent power is VI, the effective power divided by the apparent power VI cos φ / VI = cos φ is the power factor, usually expressed as a percentage. If φ = 0, cos φ = 1 and the power becomes maximum. That is, the power factor is 1 at the highest and 0 at the lowest.

Then, the standby power learning value LpreW is compared with the current power NoW at step S140. If the standby power learning value LpreW exceeds the current power NoW, (S142). If the standby power cut-off device 110 is not in the normally-energized state, it is determined whether the standby power allowable time has been exceeded (S160). If it is determined in step S162 that the standby power cut-off device 110 is in the energized state, the power of the standby power cut-off device 110 is turned off in step S162.

If any one of the standby power cut-off ports 110 is energized, the process returns to step S1.

If the standby power allowable time is not exceeded or any of the standby power cut-off devices 110 is in the energized state, the process proceeds to step S400 of processing each switch input signal.

If the standby power learning value LpreW is less than the current power NoW in step S140, it is determined whether the current of one of the standby power cutoff ports 110 is larger than the maximum current of the multi- (S150, S152, S154) whether the sum of the currents of the plurality of plugs 110 is larger than the maximum current of the multi-outlet.

If the sum of the currents of the respective standby power cut-off ports 110 is less than the maximum current of the multi-outlet, the process proceeds to step S400 of processing each switch input signal.

If the sum of the currents of the respective standby power cut-off ports 110 exceeds the maximum current of the multi-outlet, the process proceeds to step S700.

If it is determined in step S152 or S154 that the current of any of the standby power cut-off devices 110 exceeds the maximum current of the multi-outlet, it is determined whether the overcurrent allowable time has been exceeded (step S1210). If the overcurrent allowable time has been exceeded, the overcurrent load is detected (S1220), a warning sound for the overcurrent warning is output through the audio output unit (S1230), and the power of the standby power cutter 110 is shut off Return.

On the other hand, in the overcurrent cutoff processing step, as shown in FIG. 9, it is determined whether or not the overcurrent allowable time has been exceeded (S710).

If the overcurrent allowable time is not exceeded, the process goes to step S400 of processing a mode according to the input of each switch. That is, if the overcurrent allowable time is not exceeded, it is determined that the overcurrent is temporarily input, and the normal routine is processed.

If the overcurrent allowable time has been exceeded, an overcurrent load is detected (S720). The currents of the respective standby power cut-off devices 110 are compared with each other (S730), and the power of the standby power cut-off device 110 having a large current value is cut off (S732 and S734). Then, an overcurrent warning sound is output through the sound output unit 140 (S740), and the flow returns to step S100.

Next, with reference to Fig. 10, description will be given of a step (S400) of processing each switch input signal.

First, it is determined whether the mode switch 129 is input (S410). If the mode switch 129 is not input, it is determined whether the setting switch 128 is input (S420). If the setting switch 128 is not inputted, it is determined whether or not the normal energizing switch 126 is input (S422). If the normal energization switching switch 126 is not input, it is determined whether the standby power switching switch 124 is input (S430).

Then, it is determined whether any one of the standby power cut-off devices 110 is in the energized state (S434). If any one of the standby power cut-off ports 110 is in the energized state, the computer mode is entered (S438).

If the USB voltage is off (S460), all the standby power shutoff ports 110 are shut off (S462) and the computer mode is terminated ( S464). Then, the process returns to step S1.

If the USB voltage is on, the process goes to a step of checking the overload of the standby power cut-off device 110 (S100)

In step S420, when the setting switch 128 is input, the standby power value corresponding to the input of the setting switch 128 is increased or decreased. The setting switch 128 is used by the user to set the standby power of the electric device connected to the standby power cut-off device 110 directly without using the standby power learning function.

4, it is determined whether the input of the setting switch 128 is an up switch (S910). If the input of the setting switch 128 is an up switch, the standby power value preW is incrementally increased (S914) And if it is a down switch, the standby power value preW is decreased stepwise (S912).

The standby power value is displayed on the display unit 130 (S920), and the input time of the setting switch 128 is awaited (S930).

If the input of the switch is detected during the waiting time (S940), the process returns to step S400. If the input of the switch is not detected during the waiting time (S940), the flow returns to step S840.

Referring again to FIG. 10, in step S422, when the normal energization switch 126 is input, the control proceeds to step S500 of controlling the standby power switch.

If the standby power switching switch 124 is input in step S430, it is determined whether all the standby power cut-off devices 110 are in the normal power supply state (S432) If it is in the energized state, the process goes to step S100 of checking the overload of the standby power cut-off device 110.

If it is determined in step S434 that there is no standby power cut-off device 110 being energized, the process returns to step S1.

If the mode switch 129 is input in step S410, it is determined whether the power consumption is to be displayed on the display unit 130 (S440). If the power consumption is not displayed, (S442). If the power factor is not displayed, it is determined whether to display the computer mode (S444).

If the mode switch 129 is selected as the computer mode, it is determined whether there is a switch input during the waiting time (S448). If there is a switch input during the waiting time, the flow returns to step S410.

If the computer mode is not displayed in step S444, the flow returns to step S410.

If there is no switch input during the waiting time, the computer mode is set (S452), and the computer mode is displayed on the display unit 130 (S454). Then, the computer mode setting step S200 is entered.

11, the computer mode setting step S200 determines whether the standby power switching switch 124 is input (S210). When the standby power switching switch 124 is input, the computer mode setting step S200 (S220). Then, the process proceeds to step S300.

Referring again to FIG. 10, in step S450, if the mode is the computer mode, the process proceeds to step S460.

If the power is to be displayed or the power factor is to be displayed in steps S440 and S442, the input time of the switch is waited for (S470), and it is determined whether there is a switch input during the waiting time (S472).

If there is a switch input during the waiting time, the flow returns to step S410. If there is no switch input during the waiting time, the power consumption or power factor is displayed on the display unit 130, and the process goes to step S100.

According to the method of controlling the multi-outlet and the multi-outlet according to the embodiment of the present invention described above, when a surge is input from the commercial AC power supplied to the multi-outlet, there is a possibility that the electric appliance connected to the multi- Can be prevented.

In addition, the on / off state of the computer connected to the multi-outlet can be grasped and the power supplied to the computer peripheral devices can be selectively shut off, thereby reducing power consumption.

Further, by allowing the multi-outlet to be controlled remotely through the wired communication unit 151 and the wireless communication unit 153, convenience for the user can be improved.

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, And it goes without saying that the invention belongs to the scope of the invention.

110: Standby power block
112: Always light bulb
120: Switch matrix
121: Individual switch
122: Overload breaker
124: Standby power switch
126: Normally energized switch
128: Setting switch
129: Mode switch
130:
140: Audio output unit
151:
153:
160: USB connector
172: Surge protector
180:
186: Relay

Claims (36)

A standby power cutoff unit 110 for receiving commercial AC power and supplying power to the electric equipment and selectively interrupting the standby power;
A constant current tube 112 for receiving commercial AC power and supplying constant power to the electric device;
An individual switch 121 for selectively shutting off the power supplied from the standby power cut-off port 110 and the normally-closed communication port 112;
A normal energization switching switch 126 for switching the stand-by power cut-off device 110 so that power can be supplied at all times;
A control unit (180) for controlling the standby power of the electric device connected to the standby power cut-off port (110) to selectively cut off the standby power;
A setting switch 128 for setting the level of standby power to be cut off through the standby power cut-off port 110; And
An inductive and load breaker (122) for blocking the inductive overload by measuring the power factor of the electrical apparatus connected to the standby power shutoff port (110) and the constant vent port (112);
A mode switch 129 for selecting and switching to the computer mode;
A USB connector 160 for USB communication;
A display unit 130 for displaying the power consumption, the power factor, and the mode of the electrical apparatus connected to the standby power cut-off port 110 and the constant power supply port 112; Lt; / RTI >
The USB connector 160 is connected to a USB of a computer connected to the standby power cut-off port 110,
If the standby power learning value LpreW does not exist, the controller determines whether the standby power learning value LpreW exists by learning the standby power. If the standby power learning value LpreW does not exist, NoW) and determines whether the standby power value preW exists. If the standby power value preW does not exist, the current power NoW is stored as the standby power value preW, (preW) exists, the current power NoW is compared with the standby power value preW, and when the current power NoW exceeds the standby power value preW, the standby power value preW is multiplied by a constant value If the current power NoW exceeds the value obtained by multiplying the standby power value preW by a constant value, the standby power value preW is stored as the standby power learning value LpreW It ends the standby power learning, determines whether the mode switch 129 is in the computer mode,
If the mode switch 129 is in the computer mode, the on / off state of the USB voltage is determined. If the USB voltage is on, the overload of the standby power shutoff device 110 is checked. If the USB voltage is off, The standby power cut-off device 110 is shut off and the computer mode is terminated, so that the standby power cut-off device 110 connected to the computer and other standby power cut-off devices 110 connected to the peripheral devices of the computer, And the power is selectively cut off. delete The method according to claim 1,
A surge protector 172 for protecting electrical equipment connected to the standby power cut-off port 110 and the constant power supply port 112 from a surge input via a commercial AC power source;
Further comprising a plurality of electrical outlets. delete delete delete The method according to claim 1,
Further comprising a wireless communication unit (153) for remote control or a wired communication unit (151) for control through home networking. 8. The method of claim 7,
Wherein the wireless communication unit (153) is any one of infrared communication, Zigbee communication, Bluetooth communication, Wi-Fi or RF communication. 8. The method of claim 7,
Wherein the wired communication unit (151) is one of Ethernet communication, RS232 or RS485. The method according to claim 1,
And a voice output unit (140) for outputting the state of the standby power cut-off port (110) by voice. The method according to claim 1,
Further comprising a standby power switching switch (124) for shutting off the standby power of the electric device connected to the standby power cut-off port (110) and returning the standby power cut-off port (110) to the original state. . A standby switch 112, a wireless communication unit 153, a wired communication unit 151, a USB connector 160, a mode switch 129, a setting switch 128, a standby power switch 124, a constant energization switching switch 126, and a control unit 180,
Measuring a voltage level of a commercial AC power source by the controller (180);
If the voltage level is lower than the operation reference voltage, blocking the power output from the standby power shutoff port 110 and the constant power port 112 by the controller 180;
Processing the input communication signal when the voltage level is higher than the operation reference voltage and a communication signal is inputted through the wireless communication unit 153 or the wired communication unit 151;
If a communication signal is not input through the wireless communication unit 153 or the wired communication unit 151, entering a sleep mode by checking a sleep time;
If the sleep time is shorter than the switch input wait time, the input signal from the mode switch 129, the setting switch 128, the normal energization switch 126, and the standby power switch 124 is processed ; ≪ / RTI >
Wherein the processing the input communication signal comprises:
Determining whether the input communication signal is a status request signal of a multi-outlet;
Determining whether the signal is a control signal of the multi-outlet if the signal is not the status request signal of the multi-outlet; And
Controlling the standby power switching if the control signal of the multi-outlet is a signal for controlling switching of the standby power of the standby power cut-off device 110; / RTI >
Wherein the step of controlling the standby power switching comprises:
Determining whether any one of the standby power cut-off devices (110) is in a normally energized state; And
And checking the overload of the standby power cut-off port 110 when all of the standby power cut-off ports 110 are in the normal energized state,
When the standby power switching switch 124 is input, it enters a step of learning standby power,
The step of learning the standby power includes:
If the standby power learning value LpreW does not exist, the controller determines whether the standby power learning value LpreW exists by learning the standby power. If the standby power learning value LpreW does not exist, NoW) and determines whether the standby power value preW exists. If the standby power value preW does not exist, the current power NoW is stored as the standby power value preW, (preW) exists, the current power NoW is compared with the standby power value preW, and when the current power NoW exceeds the standby power value preW, the standby power value preW is multiplied by a constant value If the current power NoW exceeds the value obtained by multiplying the standby power value preW by a constant value, the standby power value preW is stored as the standby power learning value LpreW Terminating the standby power learning and determining whether the mode switch 129 is in the computer mode; Including,
The standby power value preW is compared with the current power NoW and if the standby power value preW is equal to or greater than the current power NoW or the standby power value preW is multiplied by a constant value, NoW), it is determined whether or not the standby power allowable time has been exceeded. If the standby power allowable time has been exceeded, the standby power detection is terminated and it is determined whether or not the computer mode is selected. And shutting off the power output from the cut-off port (110). delete delete delete delete delete delete delete delete 13. The method of claim 12,
If the mode switch 129 is in the computer mode, the USB voltage of the computer connected to the standby power cut-off port 110 is measured. If the USB voltage is on, the standby power cut-off port 110 is switched to the normal power- And the control method of the multi-outlet. 13. The method of claim 12,
When the mode switch 129 is not in the computer mode, enters into a step of checking an overload of the standby power cut-off device 110,
/ RTI > delete The method according to claim 12 or 22,
The step of checking the overload of the standby power cut-
Measuring a voltage level of a commercial AC power supply;
If the voltage level is lower than the operation reference voltage, interrupting the power output to the standby power shutoff port 110 and the constant power port 112 by storing the set value;
Calculating a current power (NoW) by measuring a current (i) level and a power factor of each standby power cutoff port (110) when the voltage level exceeds the operation reference voltage;
Comparing the standby power learning value LpreW with the measured current power NoW;
If the standby power learning value LpreW is less than the current power, it is determined whether the current of one of the standby power cut-off devices 110 is larger than the maximum current of the multi-outlet or the sum of the currents of the standby power cut- Is greater than a maximum current of the multi-outlet;
And a controller for controlling the multi-outlet. 25. The method of claim 24,
If the standby power learning value LpreW exceeds the current power NoW,
Determining whether each of the standby power cut-off devices 110 is in a normally-energized state;
Determining whether or not the standby power cut-off device 110 has exceeded the standby power allowable time if the standby power cut-off device 110 is not in the normally-energized state;
And disconnecting the power of the standby power cut-off port (110) and ending the standby power mode operation if the standby power allowable time has been exceeded. 26. The method of claim 25,
When the standby power allowance time is not exceeded or any one of the standby power cut-off devices 110 is energized, the mode switch 129, the setting switch 128, the standby power switching switch 124, To the step of processing the input signal of the switch (126). 25. The method of claim 24,
When the sum of the currents of the respective standby power cut-off ports 110 is less than the maximum current of the multi-outlet, the mode switch 129, the setting switch 128, the standby power switching switch 124, 126). ≪ Desc / Clms Page number 21 > 25. The method of claim 24,
And when the sum of the currents of the respective stand-by power cut-off ports (110) exceeds the maximum current of the multi-outlet, the process proceeds to the overcurrent cut-off processing step. 25. The method of claim 24,
Determining whether the current of the one of the standby power cut-off ports (110) exceeds the maximum current of the multi-outlet, whether the overcurrent allowable time has been exceeded;
Detecting an overcurrent load and shutting off the power of the standby power cutoff port (110) if the overcurrent allowable time has been exceeded;
And a controller for controlling the multi-outlet. 29. The method of claim 28,
In the overcurrent cutoff processing step,
Determining whether the overcurrent allowable time has been exceeded;
Processing the mode according to the inputs of the mode switch (129), the setting switch (128), the constant energization changeover switch (126), and the standby power changeover switch (124) , And if the overcurrent allowable time has been exceeded, detecting an overcurrent load; And
Comparing the currents of the respective standby power cut-off ports (110) to cut off the power of the standby power cut-off port (110) having a large current value;
And a controller for controlling the multi-outlet. 13. The method of claim 12,
The step of processing the input signals of the mode switch 129, the setting switch 128, the normal energization switching switch 126, and the standby power switching switch 124,
When the mode switch 129 is input, it is determined whether to display the power consumption, the power factor, or the computer mode on the display unit 130,
When the setting switch 128 is inputted, the standby power learning value corresponding to the input of the setting switch 128 is increased or decreased,
When the normal energization switching switch 126 is inputted, the control enters the step of controlling the standby power switching,
When the standby power switch 124 is turned on, it is determined whether all of the standby power cut-off devices 110 are in the normal power-on state. If all the standby power cut-off devices 110 are in the normal power- (110) is checked,
If any one of the standby power cut-off ports 110 is in the energized state, the computer enters the computer mode,
If the USB voltage is off, all the standby power cut-off ports 110 are shut off and the computer mode is terminated. If the USB voltage is on, And the step of checking overload of the socket (110) is checked. delete delete delete delete 31. The method of claim 30,
The step of processing the input signals of the mode switch 129, the setting switch 128, the normal energization switching switch 126, and the standby power switching switch 124,
When the mode switch 129 is input, it is determined whether to display the power consumption, the power factor, or the computer mode on the display unit 130,
When the setting switch 128 is inputted, the standby power learning value corresponding to the input of the setting switch 128 is increased or decreased,
When the normal energization switching switch 126 is inputted, the control enters the step of controlling the standby power switching,
When the standby power switch 124 is turned on, it is determined whether all of the standby power cut-off devices 110 are in the normal power-on state. If all the standby power cut-off devices 110 are in the normal power- (110) is checked,
If any one of the standby power cut-off ports 110 is in the energized state, the computer enters the computer mode,
If the mode switch 129 is in the computer mode, the on / off state of the USB voltage is determined. If the USB voltage is off, all the standby power shutoff ports 110 are shut off and the computer mode is terminated. , The controller enters a step of checking an overload of the standby power cut-off device (110).

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