KR200278495Y1 - Multitap consent - Google Patents

Abstract

The present invention discloses a power strip outlet. The circuit includes a plurality of main outlets commonly connected to a power input terminal, a plurality of current sensing circuits for sensing current flowing through each of the plurality of main outlets, and a signal output from the plurality of current sensing circuits in response to a control signal. Switching circuit for sequentially outputting them, rectification and amplifying circuit for rectifying and amplifying the signal output from the switching circuit, zero detection circuit for detecting the zero point of power applied to the power input terminal, and generating a zero detection signal in response to the zero detection signal. A control circuit for detecting a peak value of a signal applied from the rectification and amplifying circuit, calculating a current consumption amount, and a plurality of display units for displaying the current consumption amount outputted to the control circuit. Characterized in that the current amount is sequentially displayed on the plurality of display units The. Therefore, by using the rectifying and amplifying circuit, it is possible to accurately calculate the amount of current consumption for the main outlet. In addition, the power strip according to the present invention can reduce the current consumption by sequentially displaying the current consumption for the plurality of main outlets.

Description

Multitap consent}

The present invention relates to a multi-tap outlet, and more particularly to a multi-tap outlet that can display the amount of current and voltage consumed in each main outlet of the plurality of outlets.

The power strip has a single power input and can operate a plurality of devices simultaneously by supplying power to the plurality of main outlets.

For example, a power strip outlet is used to operate various devices such as a main body, a monitor, a printer, a scanner, and the like as a computer system.

In addition, a power strip outlet is used when a plurality of communication devices are to be connected and operated at the same time.

Conventional power strip outlets measure the amount of current used by a plurality of main outlets, and detect the alternating current consumed by the outlet and rectify and smooth the sensed alternating current using a smoothing circuit to direct current consumed by the outlet. The current is generated and the value is used by the microcomputer to calculate the amount of current drawn at the outlet and display it on the current indicator.

However, since the smoothing circuit of the conventional power strip outlet is provided with a capacitor, the current amount for the corresponding main outlet should be calculated when calculating the amount of current consumption for the plurality of main outlets. There is a problem that the microcomputer cannot calculate the correct current consumption because the current amount is input to the main outlet and the DC current is generated for the main outlet while the current amount remains.

That is, since the smoothing circuit is composed of a capacitor, there is a problem in that it is not possible to calculate an accurate amount of current consumption because the current amount for the current main outlet is calculated while the amount of charge for the previous main outlet is accumulated and not completely discharged.

In addition, the conventional multi-tap outlet has a problem in that the current consumption increases because it displays the current consumption for each of the plurality of main outlets simultaneously when displaying the current consumption for the plurality of main outlets.

An object of the present invention is to provide a multi-tap outlet that can accurately calculate and display the amount of current consumption for a plurality of main outlets.

Another object of the present invention is to provide a multi-tap outlet that can reduce the current consumption by sequentially calculating and displaying the amount of current consumption for the plurality of main outlets.

The multi-tap outlet of the present invention for achieving the above object is a plurality of main outlets commonly connected to the power input terminal, a plurality of current sensing means for detecting the current flowing through each of the plurality of main outlets, response to the control signal Switching means for sequentially outputting signals output from the plurality of current sensing means, rectification and amplifying means for rectifying and amplifying the signals output from the switching means, and detecting zero of the power applied to the power input terminal. Zero detection means for generating a detection signal, control means for detecting a peak value of a signal applied from the rectifying and amplifying means in response to the zero detection signal, calculating a current consumption amount, and a current consumption amount outputted to the control means. A plurality of display means to display, the said And the main outlet of the respective amount of current consumption characterized in that the display sequentially a plurality of display means.

1 is a block diagram of an embodiment of a power strip outlet of the present invention.

FIG. 2 is a block diagram of an embodiment showing the structure of the rectification and amplifying circuit of the power strip outlet shown in FIG.

* Brief description of the symbols of the main parts of the drawings *

10; Power input terminals 12-1 to 12-n; Main outlets

14-1 to 14-n; Current sensing circuits 16; Analog switch

18; Rectification and amplifying circuit 20; Zero detector

22; A power generator 24; Reset circuit

26; Microcomputers 28-1 to 28-n; Current indicators

30; Total current indicator 32; Voltage indicator

34; Beep and Indicator

Hereinafter, with reference to the accompanying drawings, a power outlet of the present invention will be described.

1 is a block diagram of an embodiment of a multi-wall outlet of the present invention, wherein the power input terminal 10, n main outlets 12-1 to 12-n, n current sensing circuits 14-1 to 14-n ), Analog switch 16, rectification and amplifying circuit 18, zero detector 20, power generator 22, reset circuit 24, microcomputer 26, n current indicators 28-1 28-n), a total current indicator 30, a voltage indicator 32, and a warning sound generation and indicator 34.

The function of each of the blocks shown in FIG. 1 will be described below.

The power input terminal 10 is connected to an outlet (not shown) to input AC power. Each of the n main outlets 12-1 to 12-n is an outlet for supplying power supplied from the power input terminal 10 to external devices. Each of the n current sensing circuits 14-1 to 14-n is a current sensing sensor and senses a current flowing through each of the n main outlets 12-1 to 12-n. The analog switch 16 is enabled in response to the enable signal EN applied from the microcomputer 26 and n current sensing circuits in response to the control signals CO, C1, ..., Cm. Outputs the current sensed by (14-1 ~ 14-n) sequentially. The rectifying and amplifying circuit 18 rectifies and amplifies the current output from the analog switch 16. The zero detector 20 detects a zero of AC power applied from the power input terminal 10. The reset circuit 24 generates a signal for turning off and restarting the power supply when an abnormality of the microcomputer 26 occurs. The power generator 22 is connected to the power input terminal 10 and turns off and restarts the internal power in response to a signal generated from the reset circuit 24. The microcomputer 26 sequentially inputs the signals output from the rectifying and amplifying circuit 18, calculates the amount of current consumed at the corresponding main outlet, and displays them sequentially on the n current indicators 28-1 to 28-n. The total current consumed by the n main outlets 12-1 to 12-n is calculated and displayed on the total current indicator 30, and the voltage output from the power generator 22 is input to measure the total current. 32), when the amount of current consumed in each of the n main outlets 12-1 through 12-n is greater than or equal to the first predetermined current value or in the n main outlets 12-1 through 12-n. A warning signal is generated when the total amount of current to be made is equal to or greater than the second predetermined current value. The alarm sound generation and indicator 34 generates a warning sound and displays it in response to a warning signal output from the microcomputer 26.

The multi-tap outlet of the present invention converts and outputs the current value consumed by the n main outlets 12-1 to 12-n to a voltage value by full-wave rectifying and amplifying the signal output from the analog switch 16. In this case, since the smoothing circuit including the capacitor is not used, the response characteristic is improved, and the microcomputer 26 may calculate and output an accurate amount of current consumption.

In addition, the multi-wall outlet of the present invention detects the zero point of the AC power applied from the power input terminal 10 by the zero detector 20 and applies it to the microcomputer 26. Then, after a predetermined time from the time when the signal output from the zero point detector 20 is generated, the peak value of the signal is detected from the rectifying and amplifying circuit 18, and the value is converted into a current value to convert the n current indicators 28-. 1 to 28-n).

At this time, the power outlet of the present invention sequentially outputs the amount of current sensed by the n current sensing circuits 14-1 to 14-n by the analog switch 16 under the control of the microcomputer 26, Since 26 sequentially displays the n current indicators 28-1 to 28-n, the current consumed by the power strip outlet is reduced.

FIG. 2 is a block diagram of an embodiment showing the structure of the rectification and amplifying circuit of the power outlet outlet shown in FIG. 1, and is composed of a full-wave rectifying circuit 40 and an amplifying circuit 42. As shown in FIG.

The function of each of the blocks shown in FIG. 2 will be described below.

The full wave rectifier circuit 40 rectifies and rectifies the AC power supply IN. The amplifying circuit 42 amplifies the full-wave rectified signal output from the full-wave rectifying circuit 40 to generate an output signal OUT.

Therefore, the multi-tap outlet of the present invention is configured by using a rectifying and amplifying circuit instead of the smoothing circuit so that the microcomputer 26 can accurately calculate the amount of current consumption for the n main outlets 12-1 to 12-n. .

Although described above with reference to a preferred embodiment of the present invention, those skilled in the art various modifications and variations of the present invention without departing from the spirit and scope of the present invention described in the claims below I can understand that you can.

The multi-tap outlet of the present invention can calculate the current consumption for the main outlet accurately by using the rectification and amplification circuit.

In addition, the power strip according to the present invention can reduce the current consumption by sequentially displaying the current consumption for the plurality of main outlets.

Claims (5)

A plurality of main outlets commonly connected to a power input; A plurality of current sensing means for sensing a current flowing through each of the plurality of main outlets; Switching means for sequentially outputting signals output from said plurality of current sensing means in response to a control signal; Rectifying and amplifying means for rectifying and amplifying a signal output from the switching means; Zero point detection means for detecting a zero point of power applied to the power input terminal and generating a zero point detection signal; Control means for detecting a peak value of a signal applied from said rectification and amplifying means in response to said zero detection signal and calculating a current consumption amount; And A plurality of display means for displaying the amount of current consumption output to the control means, And a plurality of power outlets of the plurality of main outlets are sequentially displayed on the plurality of display means. The power outlet of claim 1, wherein the power strip outlet is A reset circuit for turning off and restarting the control means upon detecting an abnormality of the control means; And And a power supply circuit for generating power in response to an output of said reset circuit and for generating a voltage to said control means. The method of claim 2, wherein the control means And calculating a total current consumption by accumulating the amount of current consumed in the plurality of main outlets, and generating a voltage value by inputting a voltage applied from the power circuit. The method of claim 3, wherein the control means And a warning signal is generated when the amount of current consumed in each of the plurality of main outlets is greater than or equal to the first predetermined amount of current or when the total amount of current consumption is greater than or equal to the second predetermined amount of current. The method of claim 4, wherein the plurality of display means A plurality of current indicators for respectively displaying the amount of current consumed in each of the plurality of main outlets output from the control means; A total current and voltage indicator for displaying the total current consumption and voltage value output from the control means; And And a warning sound generation and indicator for generating and displaying a warning sound in response to said warning signal.