KR101536112B1 - Apparatus and method for detecting voltage - Google Patents

Abstract

According to the present invention, whether or not an external power supply voltage from an external power supply supplied to a home in a voltage detecting device for detecting an abnormal voltage in an electronic device such as a washing machine is included in a reference voltage range capable of operating as a normal voltage in an electronic device It is possible to prevent breakage of the electronic device due to the abnormal voltage by restarting the electronic device when the external power supply voltage becomes the normal voltage after suspending the operation of the electronic device when the abnormal external power supply voltage is applied .

Description

 [0001] APPARATUS AND METHOD FOR DETECTING VOLTAGE [0002]

The present invention relates to a voltage detecting method and, more particularly, to a voltage detecting method for checking whether an external power supply voltage from an external power supply supplied to a house by an electronic device such as a washing machine is included in a reference voltage range, A voltage detection circuit for temporarily stopping the operation of the electronic device when the abnormal external power supply voltage is applied and for preventing the breakdown of the electronic device due to the abnormal voltage by restarting the electronic device when the external power supply voltage becomes a normal voltage Apparatus and method.

In general, an electronic device such as a washing machine, a TV, a microwave oven, and a dishwasher is connected to an external power source supplied to an office or a home, and is powered by an outlet.

The above electronic apparatuses are manufactured to operate at 110V or 220V so that they can be driven at operating voltages of 110V or 220V set for each country.

However, in some regions or countries, external power supplied to the office or home may be unstable. That is, for example, in a country where power is unstable in a region of Southeast Asia, Africa, or South America, an external power source supplied to the house may be larger or smaller than a voltage set in the corresponding country, There is a problem such as a damage to the circuit of the circuit.

Accordingly, development of a device for protecting electronic devices through control such as stopping the operation of the electronic device at the time of application of the abnormal voltage by sensing beforehand the abnormally high or low external power supply voltage has been continuously requested.

(Patent Literature)

Patent Literature: Korean Patent Publication No. 10-2011-0045388 (Published on May 04, 2011)

In the embodiment of the present invention, it is checked whether the external power supply voltage from the external power supply supplied to the house from the electronic apparatus such as the washing machine is included in the reference voltage range that can operate with the normal voltage in the electronic equipment. The present invention provides a voltage detecting apparatus and method for preventing an electronic device from being damaged due to an abnormal voltage by temporarily stopping the operation of the electronic device when the external power source voltage is applied, I want to.

According to an aspect of the present invention, there is provided a power supply apparatus including: a power input unit for receiving an external power supply voltage from an external power supply; and an abnormality voltage determination unit for determining whether the external power supply voltage is within a reference voltage range, And a control unit for controlling the operation of the electronic device operated by the external power supply voltage and temporarily stopping the operation of the electronic device when the external power supply voltage is determined as an abnormal voltage through the voltage sensing unit May be provided.

In addition, the voltage sensing unit may check whether the external power supply voltage is included within the reference voltage range every time a predetermined time elapses at the time of the determination of the abnormal voltage, and detect a steady voltage when the external power supply voltage is included within the reference voltage range .

In addition, the control unit restarts the electronic device from the time when the operation of the electronic device is stopped when the input voltage is detected as the normal voltage.

Also, the voltage sensing unit may include an AC / DC converter for converting the external power supply voltage of the AC power input from the external power supply to a DC voltage for rectification, and a controller for checking whether the converted DC voltage is within the reference voltage range A comparator for comparing the external supply voltage with the reference voltage, and a comparator for comparing the external supply voltage with the reference voltage, And a determination unit.

The reference voltage range may be set to a range that is greater than or equal to 160V and less than or equal to 280V when the operating voltage of the electronic device is 220V.

According to another aspect of the present invention, there is provided a method of controlling an external power supply, comprising: receiving an external power supply voltage from an external power supply; checking whether the external power supply voltage is within a reference voltage range; Determining an external power supply voltage as an abnormal voltage, and temporarily stopping the operation of the electronic device when the external power supply voltage is determined to be the abnormal voltage.

If the external power supply voltage is within the reference voltage range, it is determined that the external power supply voltage is within the reference voltage range. And restarting the operation of the electronic device from the time when the operation of the electronic device is stopped when the input voltage is detected as the normal voltage.

In the embodiment of the present invention, it is determined whether the external power supply voltage from the external power supply supplied to the house in the voltage detecting device for detecting the abnormal voltage in the electronic device such as the washing machine is included in the reference voltage range The operation of the electronic device is suspended when the abnormal external power supply voltage is applied and then the electronic device is restarted when the external power supply voltage becomes the normal voltage to prevent the breakage of the electronic device due to the abnormal voltage .

1 is a detailed block diagram of a voltage detecting apparatus according to an embodiment of the present invention,
2 is a flowchart of a voltage detection operation control according to an embodiment of the present invention;

Hereinafter, the operation principle of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. The following terms are defined in consideration of the functions of the present invention, and these may be changed according to the intention of the user, the operator, or the like. Therefore, the definition should be based on the contents throughout this specification.

1 is a detailed block diagram of a voltage detecting apparatus 100 according to an embodiment of the present invention and includes a power input unit 110, a voltage sensing unit 120, a controller 130, a memory unit 140, . The voltage detecting apparatus 100 may be applied to electronic devices driven by an external power supply voltage, for example, a washing machine, a TV, a microwave oven, a dishwasher, and the like.

Hereinafter, the operation of each component of the voltage detecting device 100 of the present invention will be described in detail with reference to FIG.

First, the power input unit 110 receives an external power supply voltage input from an external power supply. That is, for example, the power input unit 110 may connect a power source terminal of an electronic device to a power source outlet or the like provided in a home, for example, in order to operate a corresponding electronic device in an electronic device such as a washing machine, The external power supply voltage can be input. At this time, the power supplied to the house through the power outlet can be defined as the external power source, and the external power source voltage can be defined as the voltage supplied from the external power source to the electronic device.

The voltage detection unit 120 detects the voltage value of the external power supply voltage when the external power supply voltage from the external power supply is input through the power input unit 110 and outputs the detected voltage value to the normal voltage It is checked whether it is included in the reference voltage range that can be operated. In this case, the reference voltage range may refer to a voltage range that allows the electronic device to operate while not damaging the electronic device. For example, when the operating voltage of the electronic device is set to 220V, the reference voltage range is set to 160V .

Accordingly, when the voltage value of the external power supply voltage is included in the reference voltage range as described above, the voltage detection unit 120 can determine the external power supply voltage as a normal voltage. If the voltage is not included in the reference voltage range, The external power supply voltage can be determined as an abnormal voltage.

The voltage sensing unit 120 may include an AC / DC converting unit 122, a comparing unit 124, a determining unit 126, and the like as detailed components. That is, the AC / DC converter 122 rectifies the external power supply voltage to convert the external power supply voltage to a direct current (DC) voltage when the external power supply voltage is an AC voltage.

The comparator 124 checks whether the voltage value of the external power supply voltage DC-converted from the AC / DC converter 122 is included in a reference voltage range capable of normally operating the electronic equipment.

If the external power supply voltage is included in the reference voltage range based on the result of the inspection from the comparator 124, the determination unit 126 may determine the external power supply voltage as a normal voltage, The external power supply voltage can be determined as an abnormal voltage.

The control unit 130 controls the overall operation of the electronic device according to the operation program of the electronic device stored in the memory unit 140.

In addition, the controller 130 drives the electronic device using the external power supply voltage according to the embodiment of the present invention, and determines that the external power supply voltage is an abnormal voltage not included in the reference voltage range through the voltage sensing unit 120 The operation of the electronic device is temporarily stopped.

That is, for example, in a certain region or country, the DC voltage level supplied to the house may not be maintained at a constant level, and the fluctuation may occur. In such a case, if the electronic device is driven by an external power supply voltage that is not included in the reference voltage range capable of operating the electronic device, damage may occur to the electronic device. In this case, the controller 130 determines that the external power supply voltage is an abnormal voltage And stops the operation of the electronic device when it is determined.

As described above, in a state where the electronic device is paused according to the abnormal external power supply voltage, the controller 130 checks whether the external power supply voltage is included again within the reference voltage range every time a predetermined time elapses through the voltage sensing unit 120 . This is for the purpose of determining that the external power supply voltage is supplied to a normal voltage included in the reference voltage range in consideration of a situation where the external power supply voltage can be temporarily provided outside the reference voltage range.

That is, the control unit 130 checks whether the external power supply voltage is included in the reference voltage range again every time a predetermined time elapses through the voltage sensing unit 120 in a state where the electronic apparatus is paused according to the abnormal external power supply voltage, When the power supply voltage reaches a normal voltage again within the reference voltage range, the operation of the electronic apparatus is restarted from the point of time when the operation of the electronic apparatus is suspended.

2 shows a flow of operation control in the voltage detecting apparatus according to the embodiment of the present invention. Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 1 and 2. FIG.

First, when an electronic device such as a washing machine is connected to an external power source and an external power source voltage is input from an external power source (S200). When an electronic device is powered on, an external power source voltage is supplied to the voltage sensing unit 120 .

The voltage detector 120 detects a voltage value of the external power supply voltage when the external power supply voltage from the external power supply is input through the power input unit 110 (S204) It is checked whether the device is included in a reference voltage range that can operate at a normal voltage (S206). In this case, the reference voltage range may be set to a reference voltage of 160V when the operating voltage of the electronic device is set to 220V, for example.

Accordingly, when the voltage value of the external power supply voltage is included in the reference voltage range as described above, the voltage detection unit 120 can determine the external power supply voltage as a normal voltage. If the voltage is not included in the reference voltage range, The external power supply voltage can be determined as an abnormal voltage.

If the external power voltage is determined to be a normal voltage through the voltage sensing unit 120, the control unit 130 proceeds normally to the electronic device using the external power voltage (S216).

However, when the external power supply voltage is determined to be an abnormal voltage through the voltage sensing unit 120, the control unit 130 displays an abnormality on the display unit (not shown) of the electronic equipment, temporarily suspends the operation of the electronic equipment (S208).

The controller 130 waits for a predetermined period of time to elapse and then controls the voltage sensing unit 120 when a predetermined period of time has elapsed so that voltage sensing for the external power supply voltage determined as an abnormal voltage is performed again (S210).

Accordingly, whether the external power supply voltage is included in the reference voltage range is checked again in the voltage sensing unit 120, and the inspection result can be transmitted to the controller 130. [

At this time, if the external power supply voltage is determined to be an abnormal voltage again (S212), the controller 130 re-executes the voltage detection operation for the external power supply voltage after a certain period of time elapses (S210).

However, if it is determined that the external power supply voltage is within the reference voltage range and is determined to be a normal voltage (S212), the control unit 130 stops the operation of the electronic device temporarily stopped according to the determination of the abnormal voltage After that, the operation is restarted (S214), and the normal operation is advanced (S216).

As described above, according to the present invention, in the voltage detecting device for detecting an abnormal voltage in an electronic device such as a washing machine, the external power supply voltage supplied from the external power supply to the house is included in a reference voltage range The operation of the electronic device is suspended when the abnormal external power supply voltage is applied and then the electronic device is restarted when the external power supply voltage becomes the normal voltage to prevent the breakage of the electronic device due to the abnormal voltage .

While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should not be limited by the described embodiments but should be defined by the appended claims.

110: Power input unit 120: Voltage sensing unit
122: AC / DC conversion unit 124:
126: Determination unit 130:
140:

Claims (7)

A power input unit for receiving an external power supply voltage from an external power supply,
An AC / DC converter for rectifying the external power supply voltage of an AC power input from the external power supply to convert the external power supply voltage into a DC voltage;
A comparator for checking whether the converted DC voltage is within a reference voltage range,
A determination unit for determining that the external power supply voltage is an abnormal voltage when the external power supply voltage is not included in the reference voltage range and determining that the external power supply voltage is a normal voltage when the external power supply voltage is included in the reference voltage range,
A control unit for controlling the operation of the electronic device operated by the external power supply voltage and for temporarily stopping the operation of the electronic device when the external power supply voltage is determined as an abnormal voltage through the determination unit,
And the voltage detection device.
The method according to claim 1,
Wherein,
Wherein the controller detects whether the external power supply voltage is included within the reference voltage range every time a predetermined time elapses from the determination of the abnormal voltage, and detects a normal voltage when the external power supply voltage is included within the reference voltage range.
3. The method of claim 2,
Wherein,
And when the external power supply voltage is detected as the steady voltage, restarts the electronic device from a point of time when the operation of the electronic device is stopped.
delete The method according to claim 1,
The reference voltage range may be,
Wherein the voltage is set to a value greater than or equal to 160V and less than or equal to 280V when the operating voltage of the electronic device is 220V.
Receiving an external power supply voltage from an external power supply,
Rectifying the external power supply voltage of the AC power input from the external power supply to convert the external power supply voltage into a DC voltage;
Checking whether the converted DC voltage is within a reference voltage range,
Determining that the external supply voltage is a normal voltage when the external supply voltage is included in the reference voltage range based on the inspection result;
Determining that the external power supply voltage is an abnormal voltage when the external power supply voltage is not included in the reference voltage range;
Temporarily stopping the operation of the electronic device operated by the external supply voltage when the external supply voltage is determined to be the abnormal voltage
/ RTI >
The method according to claim 6,
After the stopping step,
Checking again whether the external power supply voltage is within the reference voltage range every predetermined period of time;
Detecting a steady voltage when the external supply voltage is within the reference voltage range;
And restarting the operation of the electronic device from the time when the operation of the electronic device is stopped when the external supply voltage is detected as the normal voltage
≪ / RTI >

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