KR101362207B1 - Standby power cutting circuit having adaptive standby cutting level and its apparatus - Google Patents

Abstract

The present invention provides a circuit for blocking standby power having an adaptive standby blocking level and a device thereof capable of adaptively blocking standby power by changing the standby power blocking level, blocking the power consumed in a component for standby power detection, and facilitating miniaturization by filtering a detected current value. The circuit for blocking the standby power having the adaptive standby blocking level comprises a converter, a regulator, an AC detection unit, a center control unit, a relay control unit, and a detection power control unit. The converter converts prevailing AC power into DC power. The regulator converts the output of the converter and outputs the same to predetermined power voltage. The AC detection unit operates according to the power voltage and outputs a current measurement value of the prevailing AC power The center control unit outputs a relay component signal and a standby power blocking signal when the current measurement value is lower than a first level during a predetermined time. The relay control unit connects the AC power to an AC load end according to a relay magnetization signal and blocks the AC power from the AC load end according to the relay component signal. The detection power control unit blocks the power voltage applied to the AC detection unit from the regulator in response to the standby power blocking signal. [Reference numerals] (AA) Start; (BB) Update a blocking reference value; (CC) Measured value < the blocking reference value x K?; (DD) End; (S400) Measure and store the current of AC power; (S410) Exist on the blocking reference value?; (S420) Set a value as the blocking reference value; (S430) Update a usage amount ratio; (S440) Change the blocking reference value?; (S460) Update the blocking reference value; (S470) Measured value > a blocking limitation value?; (S480) Measured time > Tref?; (S490) Generate a relay component signal

Description

STANDBY POWER CUTTING CIRCUIT HAVING ADAPTIVE STANDBY CUTTING LEVEL AND ITS APPARATUS

The present invention relates to a standby power interruption circuit, and more particularly, to a standby power interruption circuit having an adaptive standby power interruption level capable of learning the standby power interruption level according to the size of the load and an apparatus including the circuit. will be.

In general, electrical outlets are commonly used in homes and offices to connect home appliances or office equipment to commercial power sources.

In particular, the conventional outlet provides convenience to increase the mobility of electrical and electronic products by connecting or disconnecting electrical and electronic products to commercial power, but the power cords of electrical and electronic products are always plugged even when not used. Therefore, there is a problem in that standby power is lost.

Standby power can save about 10% of the electricity consumption if the power cord is disconnected from the outlet when not actually using electrical and electronic products. It is very rare to plug in the power cord only.

Therefore, in order to reduce the inconvenience of plugging and unplugging the electrical and electronic products into the outlet, a power cutoff switch protruding from the top of the outlet is formed to cut off the power supplied to the electrical and electronic products. Products that can prevent the loss of standby power is actually used, but this also has a very low utilization rate is the same as the conventional disadvantages.

That is, even if a conventional outlet main body is provided with a power cut-off switch for preventing standby power loss, the outlet main body to which the power cord of the electric / electronic product is connected is located at the rear of the commonly used electric / electronic product or is not visible from outside. Since it is used in a place, it is inconvenient to perform the dual operation of turning on / off the power switch of the product and the power supply of the outlet every time the electrical and electronic products are used, and the user only turns on / off the power switch provided in the product. Even if the power switch of the product is turned off, there is a problem in that standby power is consumed in the product. Therefore, a conventional outlet causes loss of standby power supplied to electrical and electronic products. Even if you do not do this, you will inevitably lose money Do.

Adaptive overpower and standby power off power strip Standby power blocking power strip and its standby power blocking method Green outlet using hall sensor Smart standby power cut-off outlet

The present invention provides a standby power interruption circuit and apparatus having an adaptive standby power interruption level capable of adaptively blocking the standby power by changing the standby power interruption level by learning.

In addition, the present invention provides a standby power cut-off circuit and apparatus having an adaptive standby power cutoff level capable of cutting off power consumed by the standby power detection element.

The present invention also provides a standby power interruption circuit and apparatus having an adaptive standby power interruption level that can achieve miniaturization by digitally filtering the detected current value.

A standby power interruption circuit having an adaptive standby power interruption level according to the present invention includes a converter for converting commercial AC power into a predetermined DC power source; A regulator for transforming the output of the converter to output a predetermined power supply voltage; An AC current detector operating according to an applied power supply voltage and outputting a current measurement value of the commercial AC power supply; a relay element signal and standby power when the current measurement value output from the AC current detection unit is lower than a first level for a predetermined time; A central control unit for outputting a blocking signal; A relay controller connecting the AC power to an AC load terminal according to a relay magnetization signal output from the central control unit, and disconnecting the AC power from the AC load terminal according to the relay element signal; And a detection power control unit for blocking a power supply voltage applied to the AC current detection unit from the regulator in response to the standby power blocking signal.

Preferably, the central controller converts the current measurement value in the analog state into a digital state, and if the current measurement value is greater than the median value, subtracts the median value from the current measurement value, and if the current measurement value is less than the median value. Subtract the current measurement value from the median value, digitally filter the subtracted result value, calculate an effective value from the filtered current measurement value, and store the effective value in a volatile memory.

Preferably, the central control unit, if the cutoff reference value for shutting off standby power is not stored, and sets the current measurement value as the cutoff reference value, and if there is a cutoff reference value, using the cutoff reference value and the current measured value, If the current measured value is greater than the cutoff value, the current measured value is updated to the cutoff value. If the current measured value is less than the cutoff value, it is determined whether the current measured value is smaller than a predetermined ratio of the cutoff value, and the current measured value. If it is less than this cutoff reference value, it is determined whether the measured value is smaller than the cutoff limit value, and if the state where the measured value is smaller than the cutoff limit value exceeds a predetermined cutoff reference time, a relay element signal is output.

Preferably, the operation mode operation unit includes a shutdown mode switch and a continuous mode switch, and when the shutdown mode switch generates the first operation signal, the central control unit outputs the relay element signal, and the shutdown mode switch Generates a second operation signal, the central control unit updates the cutoff reference value, and when the continuous mode switch generates a third operation signal, the central control unit outputs the relay magnetization signal, and the continuous mode switch is When generating the fourth operation signal, the central controller recognizes the remote operation signal as a reset signal.

Preferably, the first and second operation signals are classified according to the operation time of the cutoff mode switch, and the third and fourth operation signals are classified according to the operation time of the always mode switch.

Preferably, the central control unit outputs a relay device signal when the current measured value exceeds a predetermined cutoff reference time while being smaller than a cutoff reference current value for shutting off standby power.

According to the present invention, by changing the standby power cutoff level by learning, it is possible to adaptively cut off standby power, cut off power consumed by the standby power detection element, and digitally filter the detected current value to achieve miniaturization. can do. In addition, according to the present invention, the cumbersome process of learning the standby power cutoff time to the standby power cutoff device can be omitted, thereby improving the utilization rate of the standby power cutoff device.

1 is a standby power cut-off circuit diagram according to an embodiment of the present invention,
2 is an explanatory diagram of a standby power generation section according to an embodiment of the present invention;
3 is a measurement data processing flowchart according to an embodiment of the present invention, and
4 is a flowchart illustrating standby power blocking according to an embodiment of the present invention.

Hereinafter, exemplary embodiment (s) of the present invention will be described in detail with reference to the accompanying drawings. First, in adding reference numerals to the elements of each drawing, it should be noted that the same elements are denoted by the same reference numerals as much as possible even if they are displayed on different drawings. In addition, many specific details are shown in the following description, which is provided to help a more general understanding of the present invention, and the present invention may be practiced without these specific details. Will be self-evident. In describing the present invention, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

1 is a diagram illustrating a standby power blocking circuit according to an embodiment of the present invention.

Standby power interruption circuit according to an embodiment of the present invention, converter 100, regulator 150, detection power control unit 200, AC current detection unit 250, relay control unit 300, the central control unit 350, The infrared receiver 400, the status display unit 410, the status alarm unit 420, the operation mode operation unit 430, the external interface unit 440, the wired communication interface unit 450, and an emergency operation unit 460.

The converter 100 includes a conversion IC 110 and a voltage divider 120.

The converter IC 11 receives AC power of 80 to 260 volts through pins P2 and P3 and outputs a 12 volt power supply voltage VCC. The voltage divider 120 divides the output power supply voltage VCC. The divided voltage applied to the resistor R5 is fed back to output the power supply voltage by a switching regulation method.

The regulator 150 transforms and outputs a 12 volt DC voltage output from the converter 100 to a predetermined stable constant voltage (for example, 5 volts).

The detection power supply control unit 200 includes transistors Q2 and Q4. When the transistor Q4 is turned on under the control of the central controller 350, the detection power supply control unit 200 applies a power voltage to the AC current detection unit 250, and turns off the transistor Q4. The power supply voltage applied to the detector 250 is cut off. That is, the Hall effect linear sensor 255 of the AC current detector 250 consumes approximately 8-11 mA of current to drive an internal amplifier or the like regardless of whether the AC current is detected. However, since the AC current does not need to be detected while the standby power is cut off, the transistor Q4 is turned off to cut off the power supply voltage applied to the AC current detector 250.

The AC current detector 250 operates according to the applied power supply voltage VCC, receives the AC power through the pins P2 and P3, and adjusts the magnitude of the AC current by the mounted hall effect linear sensor 255 therein. Detect by using and output through the output terminal (VIOUT).

When the transistor Q1 is turned on and Q5 is turned off according to the relay magnetization signal output from the central controller 350, the relay control unit 300 operates the relay coils 311 and 312 in the relay element 310 to operate the relays 313 and 314. ), So that input pin P2 is connected to output pin P6, input pin P3 is connected to output pin P5, and the input side is connected to the output side. On the contrary, the transistor Q1 is turned off according to the relay element signal output from the central controller 350, and when Q5 is turned on, the relay coils 311 and 312 in the relay element 310 are turned off so that the relays 313 and 314 are blocked. As a result, the input pin P2 is cut off to the output pin P6 and the input pin P3 is cut off to the output pin P5 so that the input side is cut off from the output side. Here, pins P6 and P5 are output terminals.

The central controller 350 generates a relay magnetization signal according to the remote operation signal ROUT output from the infrared receiver, controls the status display of the status display unit 410, and controls the status alarm of the status alarm unit 420. The relay magnetization signal or the relay element signal is generated according to the operation signal of the operation mode operation unit 430.

The infrared receiver 400 detects an infrared remote control signal output from an external infrared remote controller, and outputs the detected remote control signal ROUT to the central controller 350. For example, the remote control signal ROUT may be a reset signal (relay magnetization signal) for resetting the relay state after the relay in the relay controller 300 is shut off and in the standby power cutoff state.

The status display unit 410 is configured to notify the user of the standby power cut-off state. When the pins P13 and P14 of the central control unit 350 are at the "L" level, the LED D7 is turned on in normal operation, and the pins P13 and P14 are "H". "If level, LED D7 turns off to indicate that standby power is off.

The state alarm unit 420 is configured to perform a function of notifying when a power is supplied to the standby power cut-off circuit and starting operation, and a function of notifying when an overcurrent of more than a reference current value (for example, 10A) flows. The buzzer sounds by outputting an audible frequency with a repetition signal of the "H" level and the "L" level.

The operation mode operation unit 430 includes a cutoff mode switch S1 and a continuous mode switch S2. When the first operation signal is generated using the cutoff mode switch S1 (that is, the cutoff mode switch S1). When turned on by pressing below the reference time tref1), the central controller 350 controls the standby power cutoff circuit to operate in the cutoff mode, and generates a second operation signal using the cutoff mode switch S1 (that is, , When the cutoff mode switch S1 is turned on for a longer time than the reference time tref1), the central controller 350 performs a process of learning a time point at which the standby power should be cut off. When the third operation signal is generated using the constant mode switch S2 (that is, when the constant mode switch S2 is turned on by pressing the reference time tref2 or less), the central control unit 350 cuts off the standby power. Control the relay control unit 300 to be connected like a normal outlet even when the standby power should be cut off, and generates a fourth operation signal using the constant mode switch S2 (that is, the constant mode switch S2). If it is turned on by pressing longer than the reference time (tref2), the central control unit 350 recognizes the input remote control signal as a reset signal.

The external interface unit 440 exchanges state information of the state display unit 410, the state alarm unit 420, and the operation mode operation unit 430 with an external device, and interfaces the external device to remotely control the standby power cutoff circuit. .

The wired communication interface 450 is a configuration for a case where a multi-tap having a standby power cut-off circuit is placed in a position where it is difficult to smoothly receive an infrared remote control signal, and a status display unit on a separate external device connected to a communication line. 410 exchanges state information of the state alarm unit 420 and the operation mode operation unit 430, and interfaces the external device to remotely control the standby power cutoff circuit. Here, the capacitors C201, C202, and C203 are arranged to reduce the effects of noise that the standby power cutoff circuit may exert on external electronic devices or noise such as EMI, EMC, etc. that the standby power cutoff circuit may receive from the outside.

The emergency operation unit 460 is configured to supply power to an emergency (circuit failure) relay coil, and the power supply voltage Vcc output from the regulator 150 is normally connected between the other end of the diode D9 and the ground through the diode D9. When the capacitor C10 is applied to the capacitor C10 to maintain the state of charge, and in case of emergency, when the user presses the emergency switch S3, the voltage charged to the capacitor C10 is applied to both relay coils through the diode D1 in the relay control unit 300 so that the relay is connected. The AC load is switched to the AC power source.

The process of learning when the central controller 350 should cut off standby power is shown in FIG. 4.

2 is a diagram illustrating a standby power generation section according to an embodiment of the present invention.

i) section A

In the no-load state, standby power is generated when AC power is applied to a device having a standby power blocking multi-circuit.

ii) section B

When a load is generated by using an electronic device connected to a standby power cut-off device, a current flows to use power.

iii) section C

When the load is removed by disabling the electronics connected to the standby power disconnect device, a change in power usage occurs for a short time.

iv) interval D

Returning to no-load state, standby power generation occurs.

At this time, when the change of the power usage is detected, and the predetermined value elapses while the measured value is smaller than the cutoff reference value, the central controller 350 outputs a relay element signal.

3 is a flowchart illustrating measurement data processing according to an embodiment of the present invention, in which the central controller 350 processes a value output from the AC current detector 250.

The Hall effect linear sensor 255 measures the AC current and outputs a voltage value proportional thereto in an analog state (S310), and the central controller 350 converts the current measured value in the analog state into a digital state (S320). Comparing whether the measured value is greater than the median value (eg, a value corresponding to “0” volts) (S330), when the value is large, the median value is subtracted from the measured value (S340), and when the value is small, the measured value is subtracted from the median value (S350). Digital filtering is performed on the subtracted result value to remove the noise (S360), and after calculating the rms value from the measured value from which the noise is removed (S370), a volatile memory (not shown) in the central controller 350 is shown. Store in (S380). Here, the digital filtering uses, for example, a low pass filter using an IIR filter (Infinite Impulse Response Filter).

4 is a flowchart illustrating a standby power cutoff according to an embodiment of the present invention, in which the central controller 350 executes the standby power cutoff operation.

Measure and store the current of the AC power according to the operation as shown in FIG. 3 (S400), and if there is no blocking reference value for shutting off standby power (S410), set the currently stored measured value as the blocking reference value (S420). If there is a blocking reference value, the usage ratio is updated using the blocking reference value and the current measured value (S430).

Thereafter, if the current measured value is greater than the cutoff value, the current measured value is updated to the cutoff value (S450). If the current measured value is smaller than the cutoff value, the current measured value is smaller than a predetermined ratio (eg, 0.8) of the cutoff value. If the current measured value is smaller than the cutoff reference value (S460), it is determined whether the measured value is smaller than the cutoff threshold value (for example, 0.5 amp [A]) (S470), and this state is the reference time (Tref = If more than 30 seconds (sec) (S480), the central control unit 350 generates a relay element signal to cut off the standby power (S490).

According to an embodiment of the present invention, the standby power cutoff circuit may be embedded in a power strip. According to another embodiment of the present invention, the standby power cutoff circuit may be built in an outlet. According to another embodiment of the present invention, the standby power blocking circuit may be embedded in the receptacle. According to another embodiment of the present invention, the standby power blocking circuit may be embedded in the code.

Although the present invention has been described in detail with respect to specific embodiments thereof, it should be understood that various changes and modifications may be made without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiment (s), but should be defined by equivalents to the appended claims, as well as the following claims.

100: converter 150: regulator
200: detection power supply control unit 250: AC current detection unit
300: relay control unit 350: central control unit
400: infrared receiver 410: status display
420: state alarm unit 430: operation mode operation unit
440: external interface unit 450: wired communication interface unit
460: emergency operation unit

Claims (7)

A converter for converting commercial AC power into a predetermined DC power;
A regulator for transforming the output of the converter to output a predetermined power supply voltage;
An AC current detection unit operating according to an applied power supply voltage and outputting a current measurement value of the commercial AC power supply;
A central controller for outputting a relay element signal and a standby power cutoff signal when a current measurement value output from the AC current detector is lower than a first level for a predetermined time;
A relay controller connecting the AC power to an AC load terminal according to a relay magnetization signal output from the central control unit, and disconnecting the AC power from the AC load terminal according to the relay element signal; And
A detection power control unit which cuts off a power supply voltage applied to the AC current detection unit from the regulator in response to the standby power blocking signal;
The central control unit,
Converts the current measurement value of the analog state to a digital state, subtracts the median value from the current measurement value if the current measurement value is greater than the median value, and subtracts the current measurement value from the median value if the current measurement value is less than the median value. Subtract, subtract, and digitally filter the subtracted result, calculate an effective value from the filtered current measurement value, store the effective value in a volatile memory,
If the cutoff value to cut off standby power is not stored, set the current measured value as the cutoff value, and if there is a cutoff value, update the usage ratio by using the cutoff value and the current measured value. If greater, update the current measured value to the cutoff value, and if the current measured value is less than the cutoff value, determine whether the current measured value is less than a predetermined ratio of the cutoff value, and if the current measured value is less than the cutoff value, The standby power interruption circuit having an adaptive standby power interruption level for determining whether the interruption threshold value is smaller than the interruption threshold value and outputting a relay element signal when the measured value is less than the interruption threshold value exceeds a predetermined interruption reference time.
delete delete The method of claim 1,
The operation mode operation unit includes a disconnection mode switch and a continuous mode switch,
When the cutoff mode switch generates the first operation signal, the central controller outputs the relay element signal.
When the cutoff mode switch generates a second operation signal, the central controller updates the cutoff reference value,
When the continuous mode switch generates a third operation signal, the central controller outputs the relay magnetization signal,
And the central control unit has an adaptive standby power interruption level for recognizing a remote control signal as a reset signal when the continuous mode switch generates the fourth operation signal.
5. The method of claim 4,
The first and second operation signals are classified according to the operation time of the cutoff mode switch, and the third and fourth operation signals are standby having an adaptive standby power cutoff level classified according to the operation time of the always mode switch. Power cut off circuit.
The method of claim 1, wherein the central control unit,
Standby power interruption circuit having an adaptive standby power interruption level that outputs a relay element signal when the current measured value exceeds a predetermined interruption reference time while being smaller than the interruption reference current value for interrupting standby power.
A standby power cut-off multi-device incorporating the standby power cut-off circuit according to any one of claims 1 and 4.

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