KR101457326B1 - Socket having electrical load indication function - Google Patents

Abstract

The present invention relates to an improved socket having an electrical load indication function which can differently display the color of a light emitting diode according to the amount of current consumption and detecting a load current flowing along a socket. For this, the socket includes a socket body which has at least one socket hole, has a receiving space inside, and has a display window which is connected to the outside with a constant distance in the circumference of the socket hole; a current detection sensor which is installed in the lower part of the socket hole, installed at one of a pair of electrode terminals, and detects a load current; at least one light emitting diode which is installed in the receiving space formed in the display window; a control substrate which is installed in the receiving space of the socket body and transfers a light signal to the light emitting diode when a signal is transferred through the current detection sensor. The control substrate is connected in parallel to a first resistance between both ends of the current detection sensor and a rectifying diode, is connected to the input terminal of the constant voltage part and one end of a smoothing capacitor in the output terminal of the rectifying diode, is connected to the voltage input terminal of a driving part though a second to a firth distribution resistance in the output terminal of the constant voltage part, is connected to each output terminal of the driving part.

Description

[0001] Socket having electrical load indication function [

The present invention relates to an electrical outlet having a function of displaying an electrical load, and more particularly, to an electrical outlet having a function of displaying an electrical load such that a color of a light emitting diode can be expressed differently according to a current consumption while sensing a load current connected to an outlet The present invention relates to an improvement of an outlet.

Generally, there are many ways to implement an outlet. Most of them have a built-in overcurrent shutdown function that cuts off the power when the supply current of the entire electrode is summed up to exceed a certain current, There is a form in which the standby power is cut off or the individual electrodes are turned on and off in connection with the personal computer or the wireless system to cut off the power supply and the power supplied to the load.

However, in the conventional socket, the current flowing through the load connected to each electrode must necessarily be transmitted through a technical means such as a computer or a wireless system. This method is troublesome in installation, expensive in system purchase, .

In the case of using a computer or a wireless system, the voltage, current, and power should be measured by simultaneously detecting the voltage and current at the inner electrode of the outlet. To measure the voltage, There is a problem that an electric shock or a short circuit may occur.

The conventional outlet disclosed in the prior art patent application 2002-68374

1) It is complicated in structure and many parts are used, so manufacturing cost is high

2) Detection of the individual load current per electrode of each receptacle because the current sensor is located at the position to sense the total sum current of several plugs. No indication

3) In order to cut off the overcurrent, the circuit is composed of the relay use and the conversion circuit, so that the supply power is obtained through the transformer rectification part, so that the circuit is complicated and bulky

4) The power source for operating the whole circuit is to convert the supplied AC power (AC 220V) into a low AC voltage through the transformer rectifier, rectify it and supply it to each circuit, and a current sensor There has been a problem in that it is necessary to perform various complicated steps such as converting the detected amount of current to a digital signal through the signal converting unit and then transmitting the digital signal to the driving unit and controlling the display LED in the driving unit.

Patent application 2002-68374

The present invention has been made in order to solve the problems of the related art as described above, and it is an object of the present invention to provide a light emitting diode which is different in color from a light emitting diode mounted on a socket body according to the magnitude of load current flowing through each electrode terminal, An object of the present invention is to provide an improvement technique of an electrical outlet having a function of displaying an electrical load such that overheating, fire, and power failure due to the operation of an earth leakage breaker can be prevented.

Another object of the present invention is to provide a light emitting diode mounted on a socket body different in color according to the magnitude of a load current flowing through each electrode terminal, thereby enabling a user to recognize that a load current of low load is safe for use of electric energy .

Still another object of the present invention is to improve the power control and power-off method using a conventional wireless system or a computer, thereby simplifying the configuration and reducing manufacturing cost.

It is another object of the present invention to provide a power supply for circuit operation by using only a current sensing sensor and to use it as a reference signal for determining an overcurrent, .

Still another object of the present invention is to prevent a safety accident such as an electric shock or a short circuit by using only an insulated current sensor.

According to an aspect of the present invention, there is provided an electronic apparatus comprising: a receptacle body having at least one receptacle opening formed therein, an accommodating space formed therein, and a display window communicating with the outside at intervals around the receptacle opening; A current sensor mounted on one of a pair of electrode terminals mounted on a lower portion of the socket, for sensing a load current; At least one light emitting diode mounted in a receiving space in which the display window is formed; A control board mounted in a receiving space of the socket main body and transmitting a light emitting signal to the light emitting diode when a signal is transmitted through the current sensing sensor; The output terminal of the driving unit in the control board is constituted by a plurality of CMOS logic gates and the input terminal of the driving unit is connected to the reference value which is the first input voltage by the second and third distribution resistors Second, third and fourth distribution resistors, forming a second input voltage by fourth and fifth distribution resistors, forming a third input voltage by sixth and seventh distribution resistors, and wherein said first input voltage> second input voltage> third And the input voltage relationship is established.
In addition, when the first to third input voltages of the driving unit are 1V, only green is lighted in the display window when the display window does not show any color, and 2.5V is displayed. In the case of 5V, + Blue = sky blue is lit, and when the voltage is 8V, green + blue + red are all lighted and displayed in white.

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According to the present invention, the color of the light emitting diodes mounted on the socket body is displayed differently according to the magnitude of the load current flowing through each electrode terminal, thereby preventing the user from overheating due to overcurrent, fire, Can be prevented.

In addition, according to the magnitude of the load current flowing through each electrode terminal, the color of the light emitting diode mounted on the socket body is displayed differently, so that the user can be aware of the fact that the load current of low load is safe for the use of electric energy, There is an effect that can be.

Also, the outlet provided with the electric load display function is simpler in construction than the conventional power control and shut-off system using a wireless system or a computer, and has a relatively low cost of the outlet.

In addition, an outlet having an electric load display function uses an insulated current sensing sensor inside, a load current flows in the first current sensing sensor, a voltage corresponding to the second current is obtained, and this voltage is applied to the circuit The electrode terminal is completely insulated from the electrode terminal by the use thereof, thereby preventing a safety accident such as an electric shock or a short circuit.

In addition, the current sensor of the receptacle provided with the electric load display function can be installed in only one of the electrode terminals of the respective receptacles to which the loads are connected and the entire common electrode terminal of the receptacle, thereby facilitating various product implementations.

1A is a plan view of a conventional outlet;
1B is a basic block diagram of a patent application 2002-68374.
1C is an external view of the patent application 2002-68374.
2 is a plan view of an outlet having an electric load display function according to the present invention;
3 is a configuration diagram showing an outlet having an electric load display function according to the present invention.
4 is a circuit diagram of an outlet having an electric load display function according to the present invention.
5 is a cross-sectional view of an outlet having a function of displaying an electric load according to the present invention.
6 is a view showing an example of using a seven segment of an outlet having an electric load display function according to the present invention.
7 is an external view of a seventh segment of an outlet having an electric load display function according to the present invention.
8 is a view showing an example using a logic gate as an outlet having an electric load display function according to the present invention.
9 to 11 are views showing an operation state of an outlet having an electric load display function according to the present invention.
12 is a view showing an example of a determination criterion table of an operation area of an outlet having an electric load display function according to the present invention;
FIG. 13 is a diagram showing examples of judgment reference tables of the operation area in the case of FIG. 8. FIG.

Hereinafter, the present invention will be described with reference to the drawings of the embodiments.

FIG. 2 is a plan view showing an outlet having an electric load display function according to the present invention. FIG. 3 (a) and FIG. 3 (b) FIG. 4 is a circuit diagram showing an outlet having an electric load display function according to the present invention, and FIGS. 5 (a) and 5 (b) are sectional views showing an outlet having an electric load display function according to the present invention And FIGS. 6 to 8 are views showing another embodiment of an outlet having an electric load display function according to the present invention.

A socket 10 having an electric load display function according to the present invention includes an outlet main body 20, a current sensing sensor 30, a light emitting diode 40, and a control board 50.

At least one receptacle opening 21 is formed in the receptacle body 20 and an accommodation space 22 is formed in the receptacle body 21. A display window 23 communicating with the outside is formed around the receptacle opening 21, .

The receptacle main body 20 is formed of a transparent or semitransparent material in consideration of use, purpose, beauty, and the like.

The display window 23 is effective to mount the reflection plate 23a while forming an inclined inner surface so as to diffuse the light of the light emitting diode 40. [

5 (b), the lid 23b can be detachably mounted on the display window 23 to open or close the display window 21 and the opened display window 23 as shown in FIG. 5 (b). The lid 23b is integrally formed with the fitting part inserted into the accommodation space 22 of the display window 23 and the horizontal part integrally formed with the fitting part 21 to block the display window 21 and the display window 23 do. The purpose of closing the display window is to prevent this when the light on the rim of the receptacle 21 is annoying to the user's eyes.

The current sensing sensor 30 is mounted on any one of a pair of electrode terminals 60 and a common electrode terminal 60a mounted on a lower portion of the receptacle 21 to detect a load The current is sensed.

3 (a), when the plurality of electrode terminals 60 are provided in a single socket, the current sensing sensor 30 may be provided for each electrode terminal 60 to which each plug is plugged, One common electrode terminal 60a of the common electrode terminal 60a in which a plurality of electrode terminals are assembled as shown in FIG. 3 (b) is installed as well as the light emitting diode 30, the control substrate 50 and the one or more light emitting diodes 40, 60a may include a current sensor 30, a control board 50, and one or more light emitting diodes 40.

That is, the current sensing sensor 30 is mounted on any one of the pair of electrode terminals 60 to which each load is connected or the common electrode terminal 60a, so that the load current (current) flowing through the electrode terminals 60, .

On the other hand, the output of the current sensing sensor 30 is outputted in the form of an AC voltage at both ends of the resistor R1 at a constant ratio to the current flowing in the primary side. In general, the current sensing sensor may have a 1: n ratio between the first and second input / output ratios and a ratio of n: 1. For example, if you use a current sensing sensor with a ratio of n: 1, when n is 1, 10V is output to the secondary when 10A of load current flows to the primary. Conversely, assuming that n is 0.5, 20V is output in the second order when 10A flows in the first order.

4, the control board 50 includes a first resistor R1 and rectifier diodes D1 to D4 connected in parallel between both ends of the current sensing sensor 30 and the rectifier diodes D1 to D4, And the output terminal of the constant voltage unit 71 is connected to the output terminal of the driving unit 72 through the second to fifth distribution resistors R2 to R5, And one or more light emitting diodes 40 are connected to the respective output terminals OUT1 to OUT3 of the driving unit 72. In addition,

In this case, the secondary output AC voltage of the current sensing sensor 30 has a constant correlation with the primary load current, and the AC voltage is full-wave rectified through the rectifying diodes D1 to D4, Smoothed by the capacitor C1, converted into a constant direct current, applied to the constant voltage unit 71, and also applied to the driving unit 72. [

The constant voltage unit 71 functions to stabilize the voltage required for operation of the circuit, and a normal DC regulator or a DC / DC conversion circuit is used.

The output of the constant voltage unit 71 is applied to the operating power source of the driving unit 72 and at the same time the divided voltages V1, V2 and V3 are obtained through the dividing resistors R2, R3, R4 and R5, As a judgment value.

The rectified output DC voltage applied to the input of the constant voltage unit 71 is applied to one input terminal VIN of the driving unit 72.

The driving unit 72 compares the input voltage VIN with the divided voltages V1, V2 and V3 using a comparator (not shown) incorporated therein and outputs the outputs OUT1, OUT2 and OUT3 And operates as shown in FIG.

That is, when 0 < VIN < V3, a very low current or no current flows in the load, and the output terminals OUT1, OUT2 and OUT3 are off,

When V3 <VIN <V2, only the output (OUT1) is turned on and the green light emitting diode is turned on,

V2 <VIN <Vl, only the output terminal (OUT2) is turned on, the blue light emitting diode is turned on,

When V1 <VIN, only the output terminal (OUT3) is turned on and the red light emitting diode is turned on,

V1 * 120% <VIN, the output (OUT3) flashes and the red LED flashes.

One or more light emitting diodes 40 are mounted in the accommodation space 22 in which the display window 23 is formed.

The light emitting diode 40 includes a red light emitting diode, a green light emitting diode, and a blue light emitting diode.

The control board 50 is mounted in the receiving space 22 of the receptacle main body 20 and is connected to the current sensing sensor 30 and the LED 40.

That is, the control board 50 compares an input value transmitted through the current sensor 30 with a reference value, and then transmits the light emitting signal corresponding to the light emitting diode 40.

6 to 8 are views showing another embodiment of an outlet having an electric load display function according to the present invention.

6 shows a seventh segment 40a instead of the light emitting diode 40 and FIG. 7 shows an example of a product using the seventh segment 40a instead of the LED 40. As shown in FIG. In this case, the seventh segment corresponding to the output OUT1 of the control board 50 is represented by '1', the seventh segment corresponding to the output OUT2 is represented by '2', and the output OUT3 is represented by The corresponding seventh segment is denoted by &quot; 3 &quot;.

That is, when 0 <VlN <V3, the output terminals OUT1, OUT2, and OUT3 are off and the seventh segments are all off, so the display is blank,

When V3 <VIN <V2, only the output (OUT1) is turned on, the seventh segment is on and becomes '1'

When V2 <VIN <Vl, only the output terminal (OUT2) is turned on, the seventh segment is turned on and becomes '2'

In the case of Vl <VIN <allowable reference value (for example, 15A), only the output terminal OUT3 is turned on, the seventh segment is turned on and becomes '3'

In the case of V1 * 120% <VIN, the output terminal (OUT3) flickers, and the seventh segment is repeatedly turned on and off by '3'. As a result, the amount of current flowing in the load can be expressed by one step, two steps, three steps, or the like.

8 shows the configuration of the control board 50 using a CMOS logic gate. The voltage V1 reference value is formed by using the second and third distribution resistors R2 and R3, The voltage V2 is formed by using the fifth distribution resistors R4 and R5 and the voltage V3 is formed by using the sixth and seventh distribution resistors R6 and R7 so that the relation of V3 < V2 & .

And the output of the constant voltage 71 is commonly applied to one side of the input terminal of the CMOS logic gate.

In FIG. 8, an output voltage proportional to the load current is commonly applied to the second, fourth, and sixth distribution resistors R2, R4, and R6, and the output terminals OUT1, OUT2, 40). The operation of FIG. 8 will be described as follows.

For example, the reference voltage V1 set using the second to seventh distribution resistors R2 to R7 is 25% of the applied voltage, V2 is 50% of the applied voltage, and V3 is 80% of the applied voltage Assumptions. It is assumed that the output voltage of the constant voltage section 71 is 10V.

In this case, V1 judgment reference voltage is 10V * 25% = 2.5V, V2 becomes 10V * 50% = 5V, and V3 becomes 10V * 80% = 8V.

Assuming that the output voltage of the current sensor proportional to the input load current is rectified to DC by VIN, the output status table of the output stage (OUT1, OUT2, OUT3) under these conditions is summarized in Table 1, Respectively.

[Table 1] CMOS Logic Gate Input and Output Status Table

That is, when the DC voltage VIN obtained from the secondary of the current sensing sensor 30 is 1 V, the output terminals OUT1, OUT2, and OUT3 are logically turned OFF,

When VIN is 2.5V, only OUT1 is HIGH and only green lights,

When VIN is 5V, OUT1 and OUT2 are HIGH and green + blue = sky blue is displayed,

When VIN becomes 8V, OUT1, OUT2, and OUT3 become HIGH, and green + blue + red lights up and is displayed as white.

9 to 11 are views showing a state of use of a receptacle provided with a function of displaying an electric load according to the present invention .

At least one receptacle opening 21 is formed and an accommodation space 22 is formed therein and a display window 23 is formed around the receptacle opening 21 to communicate with the outside with a space around the receptacle opening 21. (20).

A current sensing sensor 30 for sensing a load current is mounted on any one of the pair of electrode terminals 60 mounted on the lower portion of the receptacle 21.

Next, a light emitting diode 40 including a red light emitting diode, a green light emitting diode, and a blue light emitting diode is mounted in a receiving space 22 formed with the display window 23.

When a signal is transmitted to the receiving space 22 of the receptacle main body 20 through the current sensing sensor 30 and a control board 50 for transmitting the light emitting signal to the light emitting diode 40 is mounted, The assembly of the receptacle 10 having the function is completed.

Here, the assembling procedure of the receptacle having the electric load display function may be configured differently from the above.

An embodiment of the receptacle provided with the function of displaying the amount of electric charge configured as described above will be described as follows.

9 shows a case where a plug of a load 1 and a load 2 is plugged into a socket 10 having an electric load display function of the present invention and a current of 60 to 80% or less of the rated current flows in the load 1, The blue color is displayed in the display window formed around the plug of the load 1.

10 shows a case in which a rated current of 60 to 80% or less flows to the load 1 constituting the socket 10 having the electric load display function and a rated current of 20 to 60% flows to the load 2. The load 1 and the load 2 displays blue and green, respectively.

11 shows a case in which a current of 80% or more is rated at a load 1 and a rated current is 20 to 60% at a load 2 constituting the socket 10 having the electric load display function. The load 1 The display window of load 2 and the display window of load 2 show red and green, respectively.

In addition, the user can prevent overheating due to an overcurrent, a fire, and a power failure due to the operation of an earth leakage breaker or the like through the color displayed on the display window of the outlet main body.

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 exemplary embodiments and constructions. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention. And should be construed as being included in the scope of the present invention.

10: Outlet with electric load display function
20: Outlet body
23: Display window
23b: cover
30: Current sensor
40: light emitting diode
40a: Seven Segment
50: Control board
60: Electrode terminal
71: constant voltage section
72:
R1 to R7: first to seventh resistors
D1 to D4: rectifier diode
C1: smoothing capacitor

Claims (7)

delete delete delete delete A receptacle body having at least one receptacle opening formed therein, an accommodating space formed therein, and a display window communicating with the outside at an interval around the receptacle opening; A current sensor mounted on one of a pair of electrode terminals mounted on a lower portion of the socket, for sensing a load current; At least one light emitting diode mounted in a receiving space in which the display window is formed; A control board mounted in a receiving space of the socket main body and transmitting a light emitting signal to the light emitting diode when a signal is transmitted through the current sensing sensor; The electric socket according to claim 1,
The output terminal of the driving unit in the control board is composed of a plurality of CMOS logic gates,
The driving unit input terminal forms a reference value which is a first input voltage by the second and third distribution resistors, forms a second input voltage by the fourth and fifth distribution resistors, and the third, Wherein the first input voltage, the second input voltage, and the third input voltage are related to each other. delete 6. The method of claim 5,
When the first to third input voltages of the driving unit are 1V, only green lights are displayed on the display window when the display window does not show hue and 2.5V, and green + blue = sky blue And when the voltage is 8 V, all of green + blue + red lights are displayed on the display window so as to be displayed as white.

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