KR101848015B1 - Energy saving and over current protecting type AC out let - Google Patents

Abstract

Technology development for energy saving is accelerated in all industry fields. However, users have a habit of wasting energy and a government is obliged to use a power saving and over-current blocking type power outlet in an apartment construction for more than 30% of the total power outlet usage. The power saving and over-current blocking type power outlet has a power saving (standby power cutoff) mode and an always-on mode such that the user can set the mode. In the always-on mode, the output of the power outlet is always turned on and is outputted. However, in this case, a conventional power saving type power outlet has a disadvantage to consume self-driving power even if a load device is not connected. According to the present invention, self-driving power can be made zero in the always-on mode, thereby greatly contributing to the energy saving. In addition, the conventional power saving power outlet, in the case that standby power is blocked, has a disadvantage that a load device connected to the power saving type power outlet cannot be turned on by a remote controller. The present invention can solve the inconvenience. The present invention comprises: a load monitoring circuit block including a power saving power output socket and a current transformer; a driving power circuit block including an SMPS and an on/off switch; and a control circuit block including a control microcomputer and a latch type relay.

Description

Energy saving and over current protection type AC out let

The present invention relates to a power-saving type power outlet, and more particularly, to a power outlet having a function of shutting off the load current of the power outlet when it is judged that the load of the power outlet is in the standby state or the load current of the power outlet exceeds the rated [16A] That is, a power-saving and over-current-proof type power outlet.

A power outlet is installed on the floor of the office space or on the wall of a residential building. In many cases, the power outlet is plugged into a multi-outlet. In this case, the PC, monitor, printer, etc. are connected to the multi-outlet. When the PC enters standby mode, it is not necessary to output power to the monitor or the printer. Necessity is required. Also, if too much load is connected to the multi-outlet and it exceeds the rated output current (16A) of the outlet, it is necessary to shut off the output of the outlet to prevent fire. These power outlets are designed to be used by the user because of the power saving mode and normal mode. In the power saving mode, it operates as a function to shut off the load power when the load is in a standby state, and to always turn on the load power in the normal mode. However, when the user sets and uses the always-on mode, the control circuit driving power is consumed even when no load is connected to the outlet. Even in the power saving mode and the overcurrent type power outlet, in the normal mode, the load can be remotely controlled even when the driving power of the control circuit itself is zero [Zero] and the outlet connected to the outlet is judged to be in a standby state, Is required in the market.

An object of the present invention is to provide a power supply apparatus and a power supply apparatus which are connected to a standby power cut-off receptacle even when the power saving apparatus is in such a state that the power consumption of the socket itself is zero [ And can be remotely controlled.

In the present invention, the control microcomputer sets the control microcomputer and the driving power ON [ON] and OFF [OFF] switches using the latch type relay as the relay for shutting out the power outlet, [OFF], it recognizes this as normal mode and immediately turns on the latch relay [ON]. When the drive power switch is turned on, the control microcomputer sets the power-saving mode to the power-saving mode. And detects the standby power and the overcurrent to control the latch relay. In a state where the load current of the outlet is judged as a standby state and the outlet output is shut off, a part of the outlet driving power is supplied to the relay driving power of the outlet load device so that the outlet load device can be remotely controlled.

In Korea, more than 30% of wall-mounted power outlets for apartment buildings are required to be constructed using power saving and over-current-proof power outlets. In this case, the conventional power saving and overcurrent shut-off type power outlet uses its own driving power, and the power source of the present invention can be used as the power source of the present invention, Since the outlet power of the outlet is zero [Zero], the present invention will greatly contribute to energy saving when applied to newly built apartments. In addition, even when the power outlet is used in the power saving mode, the loader connected to the outlet can be remotely controlled even in a state where the load is in the standby state and the outlet output is shut off, thereby greatly improving the convenience of the user .

1 is a view showing an embodiment of the present invention,
Fig. 2 shows the ON state of the latch relay. OFF [OFF] Drawing showing the voltage waveform applied to the coil
Description of the Related Art
AC IN; Outlet power input terminal
OUT ₁ ; Always-on power outlet
OUT ₂ ; Power-saving power outlet
One; Load monitoring circuit block
11; Standby power detection circuit block
U ₁₀ ; OP Amp
12; Overcurrent detection circuit block
2; Driving power circuit block
21; Bridge rectifier circuit block
22; Switching Power Circuit Block [SMPS]
BR; Bridge rectifier diode
3; Control circuit block
U ₃₀ ; Control microcomputer
I ₁ ; Switch status input terminal
AD ₁ ; Standby current detection signal input terminal
AD ₂ ; Overcurrent detection signal input terminal
O is ₁ ; ON [ON] Coil control output terminal
O ₂ ; OFF [OFF] Coil control output terminal
O ₃ ; Load remote control current supply control terminal
CT; Current trance
RY ₁ ; Latch relay
RY ₂ ; Two-circuit relay
PC; Photo coupler
SW; Drive power switch
R ₁₀ to R ₁₄ ; 10th to 14th resistances
C ₁₁ to C ₁₂ ; Eleventh to twelfth capacitors
D ₁₁ to D ₁₃ ; Eleventh to thirteenth diodes
R ₂₀ to R ₂₄ ; Resistors 20 to ₂₄ ;
C ₂₀ -C ₂₄ ; 20th to 24th capacitors
D ₂₁ to D ₂₂ ; Twenty-first to twenty-second diodes
L ₂₁ to L ₂₂ ; 21 to 22 coils
T ₂₀ ; Switching transformer
① - ②; Primary winding
② - ④; Auxiliary power winding
⑤ - ⑥; Secondary winding
⑦ - ⑧; Tertiary winding
U ₂₀ ; Switching ICs
D; Drain terminal
FB; Feedback terminal
BP; Driving power terminal
R ₃₁ to R ₃₃ ; Resistors 31 to 33
D ₃₁ to D ₃₃ ; The 31st to 33rd diodes
Q ₃₁ to Q ₃₃ ; 31st to 33rd trance

1, the load monitoring circuit block [1] including the power-saving type power outlet socket [OUT ₂ ] and including the current transformer CT and the operational amplifier U1 ₀ , the SMPS [Switching Mode power supply] consisting of a driving power circuit block [2], it is composed of [3] the control circuit block including a control microprocessor _[30 U]. Load monitoring circuit block (1) monitors the load current and gives to the load current passes its state to the control microcomputer [U _30] detects whether the standby state or normal operating state, the over-current conditions. The control microcomputer [U ₃₀ ] receives the low current in the standby state from the standby current detection signal input terminal [AD ₁ ], the overcurrent is input to the overcurrent detection signal input terminal [AD ₂ ] when a predetermined period of time is by flowing currents as in the Figure to the rats teeth relay [RY _1] off coil [3-4 terminal of RY _1] of the two (2) blocks the load output. At this time, turn ON [RY ₂ ] 2-wire relay for load remote control current supply so that load can be remotely controlled. Also, when the load current input to the overcurrent detection signal input terminal [AD ₂ ] exceeds the rated [16A], the load current is supplied to the off-coil of the latch relay [RY ₁ ] At this time, RY ₂ is turned off to prevent the high frequency switching noise of the driving power source from being emitted to the power line. In Fig. 1, Q ₃₁ is driven to turn on the latch relay, and Q ₃₂ is driven to turn off the latch relay.

In the present invention, the power saving mode is set by turning on the drive power switch [SW], and the normal mode is set by turning off the drive power switch [SW]. Control microprocessor _[30 U] is determined by receiving a switch status input terminal [I _1]. Since the drive power supply switch is turned [ON] is the same current as the drive current of the photo coupler [PC] diode block [2] [1, 2 terminal #] to the drive power supply circuit of the flow when there of 120 Hz to the terminal I ₁ When a pulse is inputted and the drive power switch SW is turned off, no current flows to the diode of the photocoupler, so that a pulse of 120 Hz is not inputted to the I ₁ terminal of the control microcomputer U ₃₀ . When the driving power switch [SW] is turned off, the control microcomputer [U _30] is [also to claim 31, Tran register [Q _31] to a drive-on coil of the rats teeth relay [RY _{1] [1} ~ 2 times, the terminal; 2] thereby, by flowing a constant current-on time for the rats teeth relay [RY _1] [oN], as shown in (1). Even if the drive power switch SW is turned off, the SMPS for the drive power source operates for a certain period of time with the energy charged in the twentieth capacitor C ₂₀ configured in the drive power supply circuit block 2, so that the latch relay is turned on ]. Since the latch type relay has a characteristic in which the ON state is maintained even when no current flows in the ON [ON] coil when the relay is ON, the power outlet keeps ON state without a driving current.

]하고 다른 한 단자는 저항[R₁₀]을 통하여 상기 OP앰프[U₁₀]의 (+)입력단자에 연결하여 구성해서 상기 커렌트 트랜스[CT]의 2차 측에 검출되는 전압을 OP앰프[U₁₀]로 수십배~수백배 증폭한 후 제 11다이오드 [D₁₁]와 제 11콘센트[C₁₁]로 정류하여 제어 마이콤[U₃₀]의 아날로그 입력단자 [[AD₁]에 가해서, 제어 마이콤[U₃₀]이 대기상태를 판단한다.정류하지 않고 상기 U₁₀ 에서 증폭된 신호를 직접 상기 U₃₀의 아날로그 입력단자[[AD₁] 입력단자에 가하여 판단할 수도 있다. 또 부하전류가 16A 이상의 고전류 일때는 상기 CT트랜스의 2차 측 전압이 상기 OP앰프[U_10]의 VDD전압보다 높아 질 수 있기 때문에 제10저항[R₁₀]과 제 12다이오드[D₁₂]를 보호용으로 사용하고 있다. 또 과전류시는 상기 CT트랜스의 2차측 전압이 수십볼트[V]까지 높아질 수 있으므로 제 13저항[R₁₃]과 제 14저항 [R₁₄]으로 분압하여 낮추어서 제어마이콤의 과전류 검출신호 입력단자[AD₂]에 가해서 과전류를 검출한다. 또 본 발명에 있어서는 CT트랜스의 2차 측에 나타나는 미소한 대기전류도 검출하기 위하여 상기 OP앰프[U₁₀]를 사용하여 수십배~ 수백배 증폭한 후 정류하여 제어 마이콤의 AD입력단자[AD₁]에 가한것에 특징이 있다. 제 11저항[R₁₁]과 제 12저항 [R₁₂]은 OP앰프[U_10]의 증폭도를 결정하기 위한 저항이다. 이 회로 구성으로 콘센트에 연결된 부하기기의 원격제어용 릴레이 전류도 정확하게 검출한다.In the present invention, one terminal of the commercial AC input power source [ACIN] is connected to one terminal of the power-saving type power outlet [OUT ₂ ] through the switch contact terminal of the latch type relay [RY ₁ ] Terminal is connected to the other terminal of the power-saving power outlet [OUT _2] through the primary coil of the CT transformer configured in the load monitoring circuit block [1] to monitor the load current of the power-saving power outlet [OUT ₂ ]. The current flowing in the power-saving outlet [OUT ₂ ] is detected by the current transformer [CT]. Since the electric power in the standby state is less than several watts [W] and is in mA units in the present invention, One of the windings is grounded [

] And the other terminal is resistance [R _10] The OP amplifier [U _10] of the (+) input to configure the connection to the terminal the greater the voltage which is detected on the secondary side of the rental trans [CT] OP amplifier through the [ U ₁₀ ] and then rectified to the eleventh diode [D ₁₁ ] and the eleventh outlet [C ₁₁ ] and applied to the analog input terminal [AD ₁ ] of the control microcomputer [U ₃₀ ] U ₃₀ ] is judged to be in the standby state. It is also possible to determine whether the signal amplified in the U ₁₀ is directly applied to the analog input terminal [AD ₁ ] input terminal of the U ₃₀ without rectification. When the load current is a high current of 16 A or more, since the secondary side voltage of the CT transformer may be higher than the VDD voltage of the OP amplifier [U _10] , the tenth resistor [R ₁₀ ] and the twelfth diode [D ₁₂ ] It is used for protection. Also over-current when Since the secondary side voltage of the CT transformer be as high as tens of volts [V] of claim 13, resistance [R _13] and a fourteenth resistance [R _14] to partial pressure by lowering over-current detection signal input terminal of control microprocessor [AD ₂ ] to detect the overcurrent. In the OP amplifier [U _10] by using several orders of magnitude - can be rectified after a hundred times the amplification AD input terminal of control microprocessor [AD _1] to detect also a standby current minute may appear on the secondary side of the CT transformer in the present invention And the like. The eleventh resistor [R ₁₁ ] and the twelfth resistor [R ₁₂ ] are resistors for determining the amplification degree of the operational amplifier [U _10] . With this circuit configuration, the relay current for the remote control of the load device connected to the outlet is also accurately detected.

In the present invention, since SMPS [Switching Mode Power Supply] is used as a driving power source, only one tertiary winding of the switching transformer [T ₂₀ ] [terminal No. 7-8 of T ₂₀ ] It is possible to constitute a power supply for relay driving of the device. Since the high frequency of several tens of KHz is generated in this tertiary winding, the twenty-first coil L ₂₁ and the twenty-second coil L ₂₂ are used as noise- . The relay power supply for the load device is supplied by using the _two- phase relay [RY ₂ ] to shut off the separately supplied remote control power supply when normal operation [standby power is not blocked].

Claims (4)

A driving power supply circuit block [2] including a load monitoring circuit block [1] including a power-saving power outlet socket [OUT ₂ ] and a current transformer [CT], an SMPS and a driving power on / [U _30] and rat tooth relay [RY1] in the power saving and over-current blocking type power outlet which is the control circuit configured to block [3] containing the low-power electrical outlet [OUT2] on [oN], off the output [oFF Off switch SW to the driving power supply circuit block 2 for supplying the driving power of the control circuit block 3 including the latch relay RY1 for controlling the driving power supply The control microcomputer 30 reads the ON state of the drive power on / off switch SW and the standby power cutoff function is activated by the control microcomputer 30 when the on / off switch SW is in the ON state, On / off control of the relay [RY1], and when the drive power on / off switch [SW] is in the off state Group control microcomputer [30] The reading-off state of the driving power on / off switch [SW], and controls the rats teeth relay [RY1] in the on [ON], which operates in the regular mode,
Power-saving and over-current-proof power outlets A control circuit block including a load monitoring circuit block [1] including a power-saving power socket [OUT ₂ ] and a current transformer [CT] and a driving power circuit block [2] consisting of SMPS and a control microcomputer [U ₃₀ ] [3], a third winding [7-8] is added to the switching transformer [20] of the driving power supply circuit block [2] composed of the SMPS to form a third winding One terminal of the secondary winding is connected to one terminal of the power-saving type power outlet [OUT ₂ ] through one contact of the coil [L _21] and the two-phase relay [RY ₂ ], and the other terminal of the tertiary winding is connected to the coil L ₂₂ Connected to the other terminal of the power-saving type power outlet [OUT ₂ ] through the primary winding of the CT transformer constituting the load supervisory circuit block [1] through another contact of the two-circuit relay [RY ₂ ] And the power-saving and overcurrent-protected power outlet is set to While small, as long as when it is in standby power-down state by the relay control microcomputer [U _30] of Block [3] and the control circuit such that all short-circuit two-contact of [RY _2] The control of the two-circuit relay [RY _2; , A part of the self-driving power is supplied to the remote control power source of the load device connected to the power-saving type power outlet
Power-saving and over-current-proof power outlets The method according to claim 1,
PC] input diodes [1-2 terminals] are connected to the bridge rectifying circuit current path of the bridge rectifying circuit block [21] of the driving power supply circuit block [2] and the photocoupler [PC] The collector terminal of the photocoupler PC is connected to the first input terminal I ₁ of the control microcomputer U ₃₀ of the control circuit block 3 and the emitter terminal of the photocoupler PC is connected to the ground terminal [

] To determine whether the drive power on / off switch is on [ON] or off [OFF]
Power-saving and over-current-proof power outlets delete

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