KR900006048Y1 - Power plug socket controller capable of on-off - Google Patents

Abstract

No content.

Description

Power outlet control circuit with on / off time reservation

1 is a block diagram according to the present proposal.

2 is a detailed circuit diagram of one embodiment of FIG.

3 is a flow chart of the entire FIG. 2 and a time reservation and time confirmation flow chart.

* Explanation of symbols for main parts of the drawings

10: key matrix circuit 20: interrupt generation circuit

30: central processing unit 40: time display circuit

50: AC drive relay circuit 60: operation display circuit

The present invention relates to a power outlet control circuit, and more particularly, to a power outlet control circuit capable of reserving on / off time reservation, which enables the on-off time reservation of a concentrator while displaying time.

In general, expensive home appliances that are commercially available on the market are widely used, such as reservation of on / off time so that input power can be controlled and used conveniently in the user's lifestyle. There was a Home Autometic System that could be turned off.

However, the power control circuit attached to the home appliances only controls the home appliances of the main body, so it is impossible to control the power of other general home appliances, and the home automatic system is an expensive device and is not suitable for the general home.

Accordingly, an object of the present invention is to provide a power outlet control circuit capable of time display and on / off time reservation.

In order to achieve the above object, this paper proposes a key matrix circuit combined to designate a desired on / off time and a desired outlet insertion hole, and an interrupt for outputting a 1/60 Hz square wave for calculating time. Central processing unit (Cental) for inputting signals output from the key matrix circuit and the interrupt generating circuit and outputting time signals for indicating the time by a built-in program, outlet operation status signals, and relay driving signals, respectively. A processing unit (hereinafter referred to as a CPU), a time display circuit for inputting a time signal output from the CPU to display a current time in a normal state, a reservation time when making a reservation, and a confirmation time when making a confirmation; The operation display circuit which displays the operation state of the outlet insertion port (outlet port) by inputting the outlet operation state signal outputted from the It is characterized by the configuration of AC drive relay circuit that turns on and off AC power by operating relay of each outlet insertion port as input relay output signal.

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

1 is a block diagram of a power outlet control circuit capable of making an on / off time reservation according to the present invention, and designating a desired time for turning home appliances and the like on and off, and inserting a desired outlet insertion port (Port _{1 to} Port ₄ ). A key matrix circuit 10 combined so as to be specified, an interrupt generator circuit 20 for outputting a square wave of 1/60 Hz for calculating time, and output from the key matrix circuit 10 and an interrupt generator circuit 20. The time display signal to inform the current reservation and confirmation time by the built-in program by inputting the signal, and the signal to indicate the operation status of each outlet insertion port (Port _{1 to} Port ₄ ) and the reservation time of the built-in program CPU 30 for outputting the relay driving signal of the outlet insertion port (Port _1- Port ₄ ), and a time display circuit 40 for displaying the current, reservation, and confirmation time by inputting the time display signal output from the CPU 30. ), And the AC drive circuit for the relay on and off the connected home appliances enter a relay drive signal in the CPU (30) outlet insertion port (Port ₁ -Port ₄₎ output from the receptacle insertion port (Port ₁ -Port ₄₎ And an operation display circuit 60 for displaying the operation state of the outlet insertion hole by inputting a display signal for displaying the operation state of each insertion port (Port _1- Port ₂ ) from the CPU 30.

Therefore, if the power supply of the home appliance is turned on and off by the reservation time in the AC drive relay circuit 50, the reservation time key of the key matrix circuit 10 and the designated signal of the outlet insertion port (Port _1- Port ₄ ) are pressed. The on / off reservation time and the selection designation signal for the outlet insertion port are output to the CPU 30.

At this time, the CPU 30 inputs a signal output from the interrupt generation circuit 20, that is, an operating power frequency for calculating the time as an interrupt signal, and performs time calculation. On the other hand, the CPU 30 that inputs the on / off reservation time signal output from the key matrix circuit 10, the insertion port selection signal, and the power frequency output from the interrupt generation circuit 20 enters the state of the key input by the built-in program. The on / off reservation time and the current and confirmation time can be outputted to the time display circuit 40 according to the data after checking and judged. When the set key is pressed, the CPU 30 inputs the power frequency output from the interrupt generation circuit 20 to calculate the time, and when the " on " reservation time is completed, the relay drive signal of the reserved outlet outlet is alternating with the AC drive relay. At the same time as the output to the circuit 50, an operation state signal for indicating the operation of the outlet selection outlet is selected to output to the operation display circuit (60).

Therefore, the AC drive relay circuit 50 that inputs the drive signal output from the CPU 30 is driven to operate by turning on the power of the connected home appliance, and the operation display circuit 60 operates the AC drive relay circuit. It indicates that 50 has been driven.

In addition, when the AC drive relay circuit 50 is turned on and the connected home appliance is operating, the " off " time is reserved, and the CPU 30 outputs the relay drive signal output to the AC drive relay circuit 50. The home appliances that were operating by shutting off are turned on and off at the scheduled time.

2 is a detailed circuit diagram of one embodiment of the blur of FIG. ₁ , in which a circuit composed of resistors R ₁ -R ₈ , matrix key switches SW ₁ -SW ₁₂ , and inverters INV ₁ -INV _{4 is} shown. A circuit corresponding to the key matrix circuit 10 and composed of resistors R _9- R ₁₁ , capacitors C _1- C ₂ , and diode D ₁ corresponds to the interrupt generation circuit 20, and the decoder A circuit composed of (41), Digitron, (42), transistors (Q ₁ -Q ₇ ), and resistors (R ₁₂ -R ₂₅ ) corresponds to the time display circuit (40), and the relay (RY _1- ). A circuit composed of RY ₄ ) corresponds to a relay circuit, and a circuit composed of resistors R ₂₆ -R ₂₉ and light emitting diodes (LED ₁ -LED ₄ ) corresponds to an operation display circuit, and the circuit is configured by programmed data. It consists of the CPU 30 to control.

3 is a flow chart, reservation time and confirmation time flow chart of FIG.

Based on the above-described configuration and drawings, an embodiment of the present invention will be described in detail.

To turn on / off the appliance connected to the relay (RY _{1 to} RY ₄ ) at the desired time, use the key to output the reservation key and the desired outlet insertion selection signal, the desired outlet insertion unit selection unit key, and the desired outlet insertion opening. Pressing the matrix key switch (SW _1- SW ₁₂ ) for designating the on / off time after designation, signals of the rows of the pressed matrix keys (SW _1- SW ₁₂ ), that is, terminals A ₆ and B of the CPU 30 _When the data signal output from ₇ , C ₈ is low, the power supply Vcc input through the resistors R _1- R ₄ is the data of the "high" to "low" resistors R ₅ -R ₈ . It is input to inverters (INV ₁ -INV ₄ ) through.

In addition, the inverters INV _{1 to} INV ₄ invert the pressing signals of the matrix keys SW _{1 to} SW ₁₂ that are input and output the inverted signals to the terminals D _{0 to} D ₃ of the CPU 30. Looking at the flowchart so far, as shown in (A) of FIG. 3, when the power is input, the CPU 30 executes the state (initialization) of the programmed contents and the input signal of the matrix keys SW ₁ -SW ₁₂ . That is, the state of the current matrix key is checked and the input signal of the key is compared.

At this time, if the input signal of the input key is a reserved key, press the outlet insertion key selection key as shown in the flow chart shown in FIG. 3 (B) (when changing the current time, press the hour / minute key and the numeric keys for the current time). To select the desired outlet insert from among the outlet inserts (Port _1- Port ₄ ), press the "1" unit size n times to designate the outlet insert, set it, and press the on / off key. By pressing the key, you can reserve the on / off time for each outlet port (Port _1- Port ₄ ).

On the other hand, the power frequency (AC 60HZ) input to the terminal 100 is output to the cathode only a positive signal by the diode (D ₅ ), the signal is a resistor (R _10- R ₁₁ ) capacitor (C ₂₎ by the input to the base of the transistor (Q ₈₎ transistor (sikimyeo Q ₈₎ for turning on and off, whereby the resistance (R ₉₎ power supply (Vcc) is input to the capacitor (C ₁ to a desired state logic signal To interrupt the CPU 30 by It is input as a signal.

Therefore, the CPU 30 is input Accurate time calculation is done by signal.

At this time, if the pressing signal of the matrix keys (SW _1- SW ₁₂ ) input to the CPU 30 designates the outlet insertion port (Port ₂ ), the on time is "01:10" and the off time is "10:00". The terminal 30 outputs a colon signal indicating the morning, afternoon, and second of the digitron 42 to the terminals A ₀ -A ₃ to display the reserved time, and the terminals A ₃ -A ₄ . A predetermined signal is output to the decoder 41 at the same time, and a signal capable of displaying the hours and minutes is output to the terminals C ₀ -C ₆ .

At this time, the decoder 41 which inputs a predetermined signal output from the terminals A _3- A ₅ of the CPU 30 decodes the inputted predetermined signal, and decodes the predetermined decoding data of the digitron 42. Input to the terminals G ₀ -G ₆ drives each display element (am, pm, hour, minute) of the digitron 42 or the like.

In addition, the signals output from the terminals C ₀ -C ₆ of the CPU 30 are input to the bases of the transistors Q ₁ -Q ₇ through the base input resistors R ₁₂ -R ₁₉ .

Therefore, when the data output from the terminals C ₀ -C ₆ of the CPU 30 are " low ", the transistors Q ₁ -Q ₇ are turned on to output the signal from the decoder 41 and the CPU 30. In response to the signal output from the terminals A ₀ -A ₂ , the Digitron 42 displays the on / off reservation time (ie, the time display signal output from the CPU 30).

On the other hand, the CPU 30 is interrupt input terminal When the "on" time is calculated by the frequency input by the input, the signal to drive the relay (RY ₂ ) is output to the terminal (B ₁ ) to drive the AC voltage.

Therefore, by turning on the outlet insertion port (Port ₂ ) connected to the relay (RY ₂ ) and operating the home appliance connected to the outlet insertion port (Port ₂ ) until the off time, and outputting an operation display signal (B ₄ -B ₇ ) Outputs a signal of "low" to the middle terminal (B ₅ ) to light the LED (LED ₂ ) to indicate that the outlet insertion port (Port ₂ ) is on.

At this time, the CPU 30 has an interrupt input terminal. The current time is displayed according to the power frequency input to and the reservation time is calculated, and when the off-scheduling time of the outlet insertion port (Port ₂ ) is reached, the relay (RY ₂ ) outputted to the terminals (B ₁ ) and (B ₅ ) is output. Stops outputting the drive signal and the operation display signal.

On the other hand, when the user checks the reservation time of each outlet insertion port (Port _1- Port ₄ ) and presses the reservation time confirmation key and the key that outputs the outlet insertion selection circuit from the matrix keys (SW _1- SW ₁₂ ), The on / off time can be confirmed.

Checking the reservation time confirmation flow chart, as shown in Fig. 3 (C), it processes the confirmation signal output from the matrix keys (SW _{1 to} SW ₁₂ ) and presses the input socket insert selection signal and 1 unit key n times to insert the socket. By designating the nth outlet outlet port, the set key can be pressed to set it, and the time on / off key can be pressed to confirm the on / off reservation time of the reserved port.

As described above, the present invention can reserve the on / off operation time per outlet insertion, which makes it possible to efficiently manage home appliances and operate it according to the user's lifestyle.

Claims (1)

In the power outlet control circuit capable of the on / off time reservation time, a key matrix circuit 10 for outputting a signal for designating a desired on / off time and a desired outlet insertion hole and a signal for confirming a reserved time and A time display signal by a built-in program by inputting an interrupt generating circuit 20 generating and outputting a number of power abacus for calculating time, and signals output from the key matrix circuit 10 and the interrupt generating circuit 20; A CPU 30 for outputting an outlet operation state signal and a relay drive signal to each output terminal; a time display circuit 40 for inputting a time display signal output from the CPU 30 to display a corresponding time; And an operation display circuit 60 for displaying an operation state of an outlet insertion outlet (outlet port) output from the CPU 30, and a relay driving signal output from the CPU 30, for alternating current. A power supply control circuit capable of reserving on / off time, comprising an AC drive relay circuit (50) for turning on and off a power supply.