KR102663388B1 - Laundry treatment machine - Google Patents

Abstract

The present invention relates to a laundry treatment device. A laundry treatment device according to an embodiment of the present invention includes a display unit and a control unit that controls the display unit to enter a sleep mode based on power being applied to the display unit below a preset power, and wherein the sleep mode is In order to switch the display unit that has entered the mode to the normal mode, a power supply unit that supplies AC power to the display unit and is provided between the power unit and the display unit, and switches the AC power supplied from the power unit from the sleep mode to the normal mode. It further includes a signal conversion unit that converts the signal into a necessary signal.

Description

Laundry treatment machine

The present invention relates to a laundry processing machine, and more specifically, to a laundry processing machine for switching a sleep mode to a normal mode.

In general, a laundry treatment machine performs washing using the friction between the washing machine and the laundry, which rotates under the driving force of a motor when detergent, washing water, and laundry are put into the laundry tank, so that there is little damage to the laundry and the laundry does not tangle with each other. It can have a washing effect.

Recently released laundry processing devices are designed to meet active standby power (or power to enter sleep mode) regulations.

Active standby power refers to the power that can be turned on and operated through the Wifi even if the user is not around after the laundry processing device enters active standby mode while connected to Wifi.

According to European regulations, the active standby power to enter the active standby mode is regulated to 3W in 2018 and 2W in 2019.

Recently, in order to satisfy the above-described active standby power, the display unit (or processor (or microprocessor) included in the display unit) provided in the laundry treatment machine must be changed to a sleep state.

Additionally, when an external signal (for example, a power key or a signal received through Wifi) is applied, an additional circuit is needed to activate the display unit in the sleep state.

Referring to the prior document (Korean Patent Publication No. 10-2015-0030869), the prior document discloses a method of automatically returning from the standby power cutoff mode of a home appliance.

However, the prior literature only discloses a configuration that requires an additional separate standby power blocking controller and returns from the standby power mode of the home appliance when the standby power blocking controller receives an operation signal from the remote control.

In other words, the prior literature has a problem in that an additional standby power blocking controller is needed for recovery.

Additionally, the prior literature has a problem in that restoration is possible only through an operating signal from the remote control.

The purpose of the present invention is to provide a laundry processing machine that can switch a laundry processing machine that has entered an active standby mode to a normal mode without an additional standby power blocking controller.

Another object of the present invention is to provide a laundry treatment device that can switch the active standby mode to the normal mode in an optimized manner by adding a simple circuit.

The laundry treatment device according to an embodiment of the present invention to achieve the above object is,

A display unit and a control unit that controls the display unit to enter a sleep mode based on power being applied to the display unit below a preset power, and to switch the display unit that has entered the sleep mode to a normal mode. It further includes a power supply unit that supplies alternating current power to the display unit, and a signal conversion unit provided between the power unit and the display unit, and converting the AC power supplied from the power unit into a signal required to switch from the sleep mode to the normal mode.

In an embodiment, the control unit may cause the laundry treatment machine to enter an active standby mode based on the display unit entering a sleep mode.

When the signal converted by the signal conversion unit is applied to the display unit, the display unit is switched to a normal mode, and the control unit releases the laundry treatment machine from the active standby mode.

In an embodiment, the signal conversion unit includes a rectifier that converts the AC power received from the power unit into DC power, and a buffer unit that removes noise from the DC power converted by the rectifier, generates an edge signal, and transmits it to the display unit. Includes.

In an embodiment, the rectifier unit includes a diode unit that passes only positive signals from the AC power and a capacitor unit that generates the passed positive signals as DC power.

In an embodiment, the diode unit includes a capacitor and two diodes.

In an embodiment, the capacitor part is formed to be connected to the diode part and the ground, generates the direct current power, and removes ripple.

In an embodiment, the buffer unit includes a buffer that removes noise from the direct current power and generates an edge signal, and a level shifter that level-shifts the edge signal.

In an embodiment, the buffer inverts the direct current power to form an edge signal that switches the sleep mode of the display unit to a normal mode.

In an embodiment, the level shifter adjusts the size of the edge signal to correspond to the operating voltage of the display unit.

According to the present invention, without having a standby power blocking controller, which is a separate additional component, only a simple circuit is added between the power supply unit and the display unit, and the display unit is switched from the sleep mode to release the laundry processing machine from the active standby mode. An improved circuit can be provided that can generate a wake up signal that can switch to normal mode.

Figure 1 is a perspective view showing a laundry treatment device according to an embodiment of the present invention.
FIG. 2 is a diagram illustrating a ball balancer formed on one side of the washing tub of FIG. 1.
FIG. 3 is an internal block diagram of the laundry processing device of FIG. 1.
FIG. 4 is an internal circuit diagram of the motor driving unit of FIG. 3.
Figure 5 is an internal block diagram of the inverter control unit of Figure 4.
Figures 6 and 7 are conceptual diagrams for explaining a signal conversion unit for generating a signal that switches the display unit that has entered the sleep mode to the normal mode according to the present invention.

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

The suffixes “module” and “part” for components used in the following description are simply given in consideration of the ease of writing this specification, and do not in themselves give any particularly important meaning or role. Accordingly, the terms “module” and “unit” may be used interchangeably.

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

The suffixes “module” and “part” for components used in the following description are simply given in consideration of the ease of writing this specification, and do not in themselves give any particularly important meaning or role. Accordingly, the terms “module” and “unit” may be used interchangeably.

Figure 1 is a perspective view showing a laundry treatment device according to an embodiment of the present invention.

Referring to FIG. 1, the laundry processing machine 100 according to an embodiment of the present invention is a front load type laundry processing machine in which the laundry is inserted into the washing tub in the front direction.

When described with reference to the drawings, the laundry processing machine 100 is a drum-type laundry processing machine, which includes a casing 110 that forms the exterior of the laundry processing machine 100, and is disposed inside the casing 110 and includes the casing 110. A water storage tank (or tub) 120 supported by a washing tank (or drum) 122 disposed inside the washing tank 122 and in which clothes are washed, and a motor 130 that drives the washing tub 122, A washing water supply device (not shown) disposed on the outside of the cabinet body 111 and supplying washing water into the casing 110, and a drainage device (not shown) formed on the lower side of the water storage tank 120 to discharge the washing water to the outside. ) includes.

A plurality of through holes 122A are formed in the washing tub 122 to allow washing water to pass through, and when the washing tub 122 rotates, the laundry is lifted to a certain height and then falls by gravity. There is a lifter on the inner side of the washing tub 122. (124) can be placed.

The casing 110 includes a cabinet body 111, a cabinet cover 112 disposed and coupled to the front of the cabinet body 111, and a control disposed on the upper side of the cabinet cover 112 and coupled to the cabinet body 111. It includes a panel 115 and a top plate 116 that is disposed on the upper side of the control panel 115 and coupled to the cabinet body 111.

The cabinet cover 112 includes a bag entrance hole 114 formed to allow the bag to enter and exit, and a door 113 disposed to be rotatable left and right to allow the bag entrance hole 114 to be opened and closed.

The control panel 115 includes operation keys 117 that manipulate the operating state of the laundry processing machine 100, and a display 118 that is disposed on one side of the operating keys 117 and displays the operating state of the laundry processing machine 100. ) includes.

The operation keys 117 and the display 118 in the control panel 115 are electrically connected to a control unit (not shown), and the control unit (not shown) electrically controls each component of the laundry treatment machine 100. . The operation of the control unit (not shown) is omitted with reference to the operation of the control unit 210 in FIG. 4.

Meanwhile, the washing tank 122 may be equipped with an auto balance. The auto balancer is intended to reduce vibration that occurs depending on the amount of eccentricity of the laundry contained in the washing tub 122, and can be implemented as a liquid balancer, ball balancer, etc.

Meanwhile, although not shown in the drawing, the laundry treatment machine 100 may further include a vibration detection unit (197 in FIG. 2) that measures the amount of vibration of the washing tub 122 or the amount of vibration of the casing 110.

FIG. 2 is a diagram illustrating a ball balancer formed on one side of the washing tub of FIG. 1.

Referring to the drawing, the laundry processing machine 100 is disposed on at least one side of the washing tub 122, includes a plurality of balls 143aa to 143ae, and a guide portion that guides the movement of the plurality of balls 143aa to 143ae ( A ball balancer 140 including 141a) may be provided.

In the drawing, the ball balancer 140 is disposed at the first side end 145a in the direction toward the door 113 among both ends 145a and 145b of the washing tub 122.

When the washing tub 122 rotates, the plurality of balls 143aa to 143ae in the guide portion 141a move opposite to the direction of movement of the laundry in the washing tub 122, thereby improving the unbalance of the washing tub 122. can perform its role.

Meanwhile, although not shown in the drawing, a ball balancer 140 may be further disposed on the second end 145b of the both ends 145a and 145b of the washing tub 122 in the direction opposite to the door 113.

Meanwhile, the drawing illustrates that a vibration detection unit 197 that detects the amount of vibration of the water tank 120 is disposed at the first side end 145a of the water tank 120.

Information on the amount of vibration of the water storage tank 120 detected by the vibration detection unit 197 may be transmitted to the control unit 210.

FIG. 3 is an internal block diagram of the laundry processing device of FIG. 1.

When described with reference to the drawings, the laundry treatment machine 100 includes a motor 230 that rotates the washing tub 122, a drive unit 220 that drives the motor 230, an operation key 117, and a display ( 118), a vibration detection unit 197 that detects vibration of the washing tub 122, and a control unit 210 that controls each unit in the laundry treatment machine 100.

In particular, the control unit 210 can control the motor driving unit 220.

The laundry treatment machine 100 can be controlled by the control operation of the control unit 210. In particular, the control unit 210 can control the motor driving unit 220.

The motor driving unit 220 drives the motor 230. Accordingly, the washing tub 122 is rotated by the motor 230.

The control unit 210 operates by receiving an operation signal from the operation key 117. Accordingly, washing, rinsing, and dehydration operations can be performed.

Additionally, the control unit 210 may control the display 118 to display the washing course, washing time, spin-drying time, rinsing time, etc., or the current operating state.

Meanwhile, the control unit 210 controls the motor driving unit 220, and the motor driving unit 220 controls the motor 230 to operate. At this time, a position detection unit for detecting the position of the rotor of the motor is not provided inside or outside the motor 230. That is, the motor driver 220 can control the motor 230 in a sensorless manner.

The motor drive unit 220 is for driving the motor 230, and includes an inverter (not shown), an inverter control unit (not shown), and an output current detection unit (E in FIG. 4) that detects the output current flowing in the motor 230. ) can be provided. Additionally, the motor drive unit 220 may be a concept that further includes a converter that supplies direct current power input to an inverter (not shown).

For example, the inverter control unit (430 in FIG. 4) in the motor driving unit 220 estimates the rotor position of the motor 230 based on the output current (io). Then, based on the estimated rotor position, the motor 230 is controlled to rotate.

Specifically, the inverter control unit (430 in FIG. 4) generates a pulse width modulation (PWM) switching control signal (Sic in FIG. 4) based on the output current (io) and outputs it to the inverter (not shown). Then, the inverter (not shown) performs a high-speed switching operation and supplies AC power of a predetermined frequency to the motor 230. And the motor 230 is rotated by AC power of a predetermined frequency.

The motor driving unit 220 will be described later with reference to FIG. 4 .

Meanwhile, the control unit 210 may calculate the weight of the laundry based on the current (io) detected by the current detection unit 220. For example, while the washing tub 122 rotates, the laundry weight can be calculated based on the current value (io) of the motor 230.

Meanwhile, the control unit 210 may detect the amount of eccentricity of the washing tub 122, that is, the unbalance (UB) (or amount UB) of the washing tub 122. This eccentricity detection is performed based on the ripple component of the current (io) detected by the current detector 220 or the change in rotational speed of the washing tub 122, or the water storage tank 120 measured by the vibration detector 197. It can be performed based on the amount of vibration.

In addition, the amount of eccentricity of the washing tub 122 depends on the state of the laundry (laid) accommodated in the washing tub 122 (e.g., laundry weight, fabric quality, degree of agglomeration, moisture content, state of fabric arrangement, state of aggregation, etc.). It may vary, and can be understood as the UB amount (or UB degree) described below.

Meanwhile, the vibration detection unit 197 can detect the amount of vibration of the water storage tank 120. Information on the amount of vibration of the water storage tank 120 detected by the vibration detection unit 197 may be transmitted to the control unit 210.

The vibration detection unit 197 may include a vibration sensor. The vibration sensor may be a 6-axis vibration sensor, and the 6-axis may refer to the front x, y, and z axes and the rear x, y, and z axes.

That is, the vibration detection unit 197 may be a 6-axis vibration sensor and is provided in the water storage tank that accommodates the washing tank 122, and detects the amount of vibration of the water storage tank 120 generated by the rotation of the washing tank 122. Measurements can be distributed across 6 axes.

Thereafter, the control unit 210 may determine the amount of eccentricity (i.e., the amount of UB) of the washing tub 122 by inputting the amount of vibration on the six axes measured by the vibration sensor into a preset algorithm.

FIG. 4 is an internal circuit diagram of the motor driving unit of FIG. 3.

When described with reference to the drawings, the motor drive unit 220 according to an embodiment of the present invention is for driving a sensorless motor and includes a converter 410, an inverter 420, an inverter control unit 430, and a DC terminal. It may include a voltage detection unit (B), a smoothing capacitor (C), an output current detection unit (E), and an output voltage detection unit (F). Additionally, the motor driving unit 220 may further include an input current detection unit (A), a reactor (L), etc.

The reactor L is disposed between the commercial AC power source 405 (vs) and the converter 410 to perform power factor correction or boosting operation. Additionally, the reactor L may perform a function of limiting harmonic current caused by high-speed switching of the converter 410.

The input current detection unit (A) can detect the input current (is) input from the commercial AC power supply 405. For this purpose, a CT (current trnasformer), shunt resistor, etc. may be used as the input current detection unit (A). The detected input current (is) may be input to the inverter control unit 430 as a discrete signal in the form of a pulse.

The converter 410 converts the commercial AC power 405 that has passed through the reactor L into direct current power and outputs it. In the drawing, the commercial AC power source 405 is shown as a single-phase AC power source, but it may also be a three-phase AC power source. The internal structure of the converter 410 also varies depending on the type of commercial AC power source 405.

Meanwhile, the converter 410 may be made of a diode or the like without a switching element, and may perform a rectification operation without a separate switching operation.

For example, in the case of a single-phase AC power source, four diodes can be used in a bridge form, and in the case of a three-phase AC power source, six diodes can be used in a bridge form.

Meanwhile, the converter 410 may be, for example, a half-bridge type converter in which two switching elements and four diodes are connected, and in the case of three-phase AC power, six switching elements and six diodes may be used. .

When the converter 410 includes a switching element, it can perform a boosting operation, power factor improvement, and direct current power conversion by the switching operation of the switching element.

The smoothing capacitor (C) smoothes the input power and stores it. In the drawing, a single device is illustrated as a smoothing capacitor (C), but multiple devices may be provided to ensure device stability.

Meanwhile, in the drawing, it is illustrated as connected to the output terminal of the converter 410, but it is not limited to this and direct current power may be directly input. For example, direct current power from a solar cell is connected to the smoothing capacitor (C). It can be input directly or converted to direct current/direct current. Below, the description will mainly focus on the parts illustrated in the drawings.

Meanwhile, since direct current power is stored at both ends of the smoothing capacitor (C), it may also be called a dc end or dc link end.

The dc terminal voltage detector (B) can detect the dc terminal voltage (Vdc) at both ends of the smoothing capacitor (C). To this end, the DC terminal voltage detection unit (B) may include a resistor element, an amplifier, etc. The detected DC terminal voltage (Vdc) may be input to the inverter control unit 430 as a discrete signal in the form of a pulse.

The inverter 420 is provided with a plurality of inverter switching elements and converts the smoothed direct current power (Vdc) into three-phase alternating current power (va, vb, vc) of a predetermined frequency by the on/off operation of the switching elements, It can be output to the synchronous motor 230.

The inverter 420 consists of a pair of upper arm switching elements (Sa, Sb, Sc) and lower arm switching elements (S'a, S'b, S'c) that are connected in series with each other, and a total of three pairs of upper and lower arm switching elements. The switching elements are connected in parallel (Sa&S'a, Sb&S'b, Sc&S'c). A diode is connected in anti-parallel to each switching element (Sa, S'a, Sb, S'b, Sc, S'c).

The switching elements in the inverter 420 perform on/off operations based on the inverter switching control signal (Sic) from the inverter control unit 430. As a result, three-phase AC power having a predetermined frequency is output to the three-phase synchronous motor 230.

The inverter control unit 430 may control the switching operation of the inverter 420 based on a sensorless method. To this end, the inverter control unit 430 can receive the output current (io) detected by the output current detector (E) and the output voltage (vo) detected by the output voltage detector (F).

The inverter control unit 430 outputs an inverter switching control signal (Sic) to the inverter 420 in order to control the switching operation of the inverter 420. The inverter switching control signal (Sic) is a pulse width modulation (PWM) switching control signal, which includes the output current (io) detected by the output current detector (E) and the output voltage (vo) detected by the output voltage detector (F). ) is created and output based on.

The output current detection unit (E) detects the output current (io) flowing between the inverter 420 and the three-phase motor 230. That is, the current flowing in the motor 230 is detected. The output current detection unit (E) can detect all output currents (ia, ib, ic) of each phase, or can detect the output currents of two phases using three-phase balance.

The output current detection unit (E) may be located between the inverter 420 and the motor 230, and a current trnasformer (CT), a shunt resistor, etc. may be used to detect the current.

If shunt resistors are used, three shunt resistors are located between the inverter 420 and the synchronous motor 230, or are connected to the three lower arm switching elements (S'a, S'b, and S'c of the inverter 420). ) It is possible for one end to be connected to each other. On the other hand, using three-phase balance, it is also possible for two shunt resistors to be used. Meanwhile, when one shunt resistor is used, it is also possible for the shunt resistor to be disposed between the above-described capacitor C and the inverter 420.

The detected output current (io) is a discrete signal in the form of a pulse and can be applied to the inverter control unit 430, and an inverter switching control signal (Sic) is generated based on the detected output current (io). do. Hereinafter, the detected output current (io) may be described in parallel as the three-phase output current (ia, ib, ic).

Meanwhile, the three-phase motor 230 is provided with a stator and a rotor, and each phase AC power of a predetermined frequency is applied to the coil of the stator of each phase (phase a, b, and c), so that the rotor rotates. will do.

These motors 230 include, for example, a Surface-Mounted Permanent-Magnet Synchronous Motor (SMPMSM), an Interior Permanent Magnet Synchronous Motor (IPMSM), and a synchronous relay. It may include a synchronous reluctance motor (Synrm), etc. Among these, SMPMSM and IPMSM are synchronous motors (Permanent Magnet Synchronous Motor (PMSM)) using permanent magnets, while Synrm is characterized by having no permanent magnets.

Meanwhile, when the converter 410 includes a switch element, the inverter control unit 430 can control the switching operation of the switching element within the converter 410. To this end, the inverter control unit 430 may receive the input current (is) detected by the input current detection unit (A). And, the inverter control unit 430 may output a converter switching control signal (Scc) to the converter 410 in order to control the switching operation of the converter 410. This converter switching control signal (Scc) is a pulse width modulation (PWM) type switching control signal, and can be generated and output based on the input current (is) detected by the input current detector (A).

FIG. 5 is an internal block diagram of the inverter control unit of FIG. 4.

Referring to FIG. 5, the inverter control unit 430 includes an axis conversion unit 510, a speed calculation unit 520, a current command generation unit 530, a voltage command generation unit 540, an axis conversion unit 550, and It may include a switching control signal output unit 560.

The axis conversion unit 510 receives the output current (ia, ib, ic) detected by the output current detection unit (E), and converts the two-phase current (iα, iβ) in the stationary coordinate system and the two-phase current in the rotating coordinate system ( id, iq).

Meanwhile, the axis conversion unit 510 converts the two-phase currents (iα, iβ) of the stationary coordinate system, the two-phase voltages (vα, vβ) of the stationary coordinate system, and the two-phase currents (id, iq) of the rotating coordinate system. The two-phase voltage (vd, vq) of the rotation coordinate system can be output externally.

The speed calculation unit 520 receives the axis-converted two-phase current (iα, iβ) of the stationary coordinate system and the two-phase voltage (vα, vβ) of the stationary coordinate system from the axis conversion unit 510, and generates the motor 230. The rotor position (θ) and speed (ω) can be calculated.

Meanwhile, the current command generator 530 generates a current command value (i*q) based on the calculation speed () and the speed command value (ω*r). For example, the current command generator 530 performs PI control in the PI controller 535 based on the difference between the calculation speed () and the speed command value (ω*r), and the current command value (i*q) can be created. In the drawing, the q-axis current command value (i*q) is exemplified as the current command value, but unlike the drawing, it is also possible to generate the d-axis current command value (i*d). Meanwhile, the value of the d-axis current command value (i*d) may be set to 0.

Meanwhile, the current command generator 530 may further include a limiter (not shown) that limits the level of the current command value (i*q) so that it does not exceed the allowable range.

Next, the voltage command generator 540 generates the d-axis and q-axis currents (id, iq) converted to a two-phase rotation coordinate system in the axis conversion unit, and the current command value (i*) from the current command generator 530, etc. Based on d,i*q), d-axis and q-axis voltage command values (v*d,v*q) can be generated. For example, the voltage command generator 540 performs PI control in the PI controller 544 based on the difference between the q-axis current (iq) and the q-axis current command value (i*q). A voltage setpoint (v*q) can be generated. In addition, the voltage command generator 540 performs PI control in the PI controller 548 based on the difference between the d-axis current (id) and the d-axis current command value (i*d), and the d-axis voltage command value (v*d) can be created. Meanwhile, the value of the d-axis voltage command value (v*d) may be set to 0, corresponding to the case where the value of the d-axis current command value (i*d) is set to 0.

Meanwhile, the voltage command generator 540 may further include a limiter (not shown) that limits the level of the d-axis and q-axis voltage command values (v*d, v*q) so that they do not exceed the allowable range. .

Meanwhile, the generated d-axis and q-axis voltage command values (v*d, v*q) may be input to the axis conversion unit 550.

The axis conversion unit 550 receives the calculation position () and d-axis and q-axis voltage command values (v*d, v*q) from the speed calculation unit 520 and performs axis conversion.

First, the axis conversion unit 550 performs conversion from a two-phase rotating coordinate system to a two-phase stationary coordinate system. At this time, the calculation position () may be used in the speed calculation unit 520.

Then, the axis conversion unit 550 performs conversion from a two-phase stationary coordinate system to a three-phase stationary coordinate system. Through this conversion, the axis conversion unit 1050 can output three-phase output voltage command values (v*a, v*b, v*c).

The switching control signal output unit 560 generates a switching control signal (Sic) for the inverter according to the pulse width modulation (PWM) method based on the three-phase output voltage command values (v*a, v*b, v*c). and print it out.

The output inverter switching control signal Sic may be converted into a gate driving signal by a gate driver (not shown) and input to the gate of each switching element in the inverter 420. As a result, each switching element (Sa, S'a, Sb, S'b, Sc, S'c) in the inverter 420 can perform a switching operation.

Meanwhile, as described above, the laundry treatment machine of the present invention can enter the active standby mode based on the power being applied below the active standby power.

The active standby power refers to a state in which the user can operate the laundry processing device using WIFI through an external device when the laundry processing device enters active standby mode while connected to WIFI and then goes out (active standby mode). ) refers to the power to enter.

For example, the active standby power may be 2W and may be set differently by the user.

In the laundry processing device of the present invention, in order to enter the active standby mode (that is, in order for power lower than the active standby power to be applied), the display unit must enter a sleep state. This is because the display unit must enter the sleep state to lower the standby power and enter the active standby mode.

That is, the control unit 210 of the laundry processing machine of the present invention operates the display unit 118 so that the display unit 118 is in sleep mode in the standby state in order to satisfy the active standby power (e.g., 2W) or less. You can control it.

In other words, the control unit 210 may control the display unit 118 to enter the sleep mode based on power (or power) being applied to the display unit 118 below a preset power level.

Additionally, the laundry treatment device of the present invention may further include a power supply unit that supplies alternating current power to the display unit 118 in order to switch the display unit 118 that has entered the sleep mode to the normal mode.

The power supply unit may refer to a power supply source that applies alternating current power to the laundry processing device, and may include an external power supply source.

When the power unit is formed from an external power supply source, the power unit may further include a connector (CON) for receiving power supplied from the external power supply source. Power applied through the connector can be transmitted to the display unit 118 as well as components that require power of the laundry treatment machine.

Meanwhile, the display unit 118 of the laundry processing device of the present invention may be configured to switch from the sleep mode to the normal mode when power is applied from the outside in the sleep mode (sleep state).

In other words, switching from the sleep mode to the normal mode may mean waking up from the sleep mode.

When waking up from the sleep mode or switching from the sleep mode to the normal mode, more power (or power, standby power) than the preset power is supplied to the display unit 118, and the laundry processing machine goes into active standby. mode enters the normal operation mode.

As described above, the control unit 210 may cause the laundry treatment machine to enter the active standby mode based on the display unit 118 entering the sleep mode.

Meanwhile, the power supply unit is configured to apply alternating current power. Conventionally, even when the AC power is applied, only a square waveform is applied to the display unit, making it impossible to switch the display unit 118 from sleep mode to normal mode without a separate external device (e.g., Micom). did.

However, the laundry treatment device of the present invention includes a signal conversion unit 600 that is provided between the power unit and the display unit 118 and converts the AC power supplied from the power unit into a signal necessary to switch from the sleep mode to the normal mode. It further includes.

The signal converted by the signal conversion unit 660 refers to a signal used to switch the display unit 118 from sleep mode to normal mode, and has at least one edge changing from High to Low or Low to High. (Edge) It can mean a signal.

Based on the signal converted by the signal conversion unit 600 being applied to the display unit 118, the display unit 210 may be converted to the normal mode. In this case, the power applied to the display unit 210 converted to the normal mode becomes greater than the active standby power (or preset power) for entering the active standby mode, and the control unit 210 operates the laundry processing device. can be released from active standby mode (i.e., can be switched to normal operating mode).

In this way, in order to switch the laundry processing device from the active standby mode to the normal operation mode, the display unit 118 that has entered the sleep mode must be switched to the normal mode. The laundry processing device of the present invention requires a separate external device ( The display unit 118 can be switched from sleep mode to normal mode using only a simple circuit, without using Micom (standby power cutoff controller).

As described above, the signal conversion unit 600 for this purpose, when provided between the power supply unit (or the connector included in the power supply unit) and the display unit 118, switches the AC power supplied from the power supply unit from sleep mode to normal mode. It can be configured to convert into a necessary signal (edge signal).

Figures 6 and 7 are conceptual diagrams for explaining a signal conversion unit for generating a signal that switches the display unit that has entered the sleep mode to the normal mode according to the present invention.

Referring to FIG. 6, the signal converter 600 removes noise from the rectifier 610, which converts the AC power received from the power supply into DC power, and the DC power converted by the rectifier 610, and converts the edge signal to It may include a buffer unit 620 that generates and transmits it to the display unit 118.

The rectifier 610 may include a diode unit 612 that passes only positive signals from AC power and a capacitor unit 614 that generates (converts) the passed positive signals into DC power.

The diode unit 612 may include a capacitor and two diodes, as shown in FIG. 6.

When AC power is applied from the power supply unit, the diode unit 612 can filter out the negative (-) signal using a diode and allow only the positive signal (+) to pass.

The diode unit 612 may also be called a filter unit in that it passes only positive signals.

The capacitor unit 614 can generate (convert) the positive signal passed from the diode unit 612 into direct current power.

The capacitor unit 614 may include at least one capacitor, and as shown in FIG. 7, if it includes at least two capacitors, they may be connected in parallel.

The capacitor unit 614 is formed to be connected to the diode unit 612 and the ground, and may be formed to generate (convert) DC power (DC signal) and remove ripples included in the DC power.

The capacitor unit 614 can not only generate direct current power (i.e., a direct current signal) from the positive signal, but also serve to remove ripples included in the direct current power (or direct current signal).

The capacitor unit 614 may be formed to remove ripple included in the direct current power (direct current signal). In that the capacitor unit 614 removes ripple included in the DC power supply, the capacitor unit 614 may be called a smoothing unit.

Meanwhile, the buffer unit 620 may include a buffer 622 that removes noise from DC power and generates an edge signal, and a level shifter 624 that shifts the level of the edge signal.

Specifically, the buffer 622 may be formed to form an edge signal that switches the sleep mode of the display unit 118 to the normal mode. To this end, the buffer 622 may invert the direct current power generated in the capacitor unit 614 to form the edge signal. For example, if the DC power is a DC signal formed from Low to High, the edge signal can be inverted so that the DC power changes from High to Low.

Additionally, the buffer 622 may be formed to remove noise included in the DC power source (DC signal).

The level shifter 624 may be formed to adjust the size of the edge signal to correspond to the operating voltage of the display unit 118.

The CPU shown in FIG. 6 may refer to a CPU (or processor, microprocessor) for operating the display unit 118. When the display unit 118 and the control unit 210 are formed as one body, the CPU may refer to the control unit 210.

The operating voltage of the display unit 118 refers to the voltage used to operate the display unit 118 in normal mode.

For example, when the size of the edge signal generated from the DC power supply is 5V and the operating voltage of the display unit 118 is 3.3V, the level shifter 624 changes the size of the edge signal to the operating voltage. It can be adjusted (converted, converted, changed) to correspond.

Referring to FIG. 7, when an AC signal is received through the power supply unit (or connector) (waveform 1), the signal conversion unit 600 of the present invention converts the AC signal into a DC signal through the rectifier unit 610 ( Waveform 2), through the buffer unit 620, the noise of the DC signal is removed, the DC signal is inverted, and an edge signal (waveform 3) is generated to operate the display unit 118 (or the CPU of the display unit). can be created.

In this case, the buffer unit 620 uses the level shifter 624 to adjust (convert,) the size of the inverted edge signal to correspond to the operating voltage of the display unit 118 (or the CPU of the display unit). change, conversion) can be made.

Through this configuration, the present invention provides a simple signal conversion unit 600 including the rectifier 610 and the buffer unit 620, even without additional expensive/high-performance equipment such as Micom and standby power cutoff controller. The display unit can be woken up from sleep mode only through (circuit).

In addition, while the laundry processing device is in active standby mode, a signal to control the laundry processing device can be applied from the outside (for example, the power key of the laundry processing device, or a terminal that can access the laundry processing device through WIFI). there is.

In this case, the present invention converts the sleep mode of the display unit to the normal mode using only the simple circuit of the signal conversion unit described above, thereby converting the laundry processing device in the active standby mode to the normal operation mode, thereby enabling smooth remote operation. Control can be performed.

According to the present invention, without having a standby power blocking controller, which is a separate additional component, only a simple circuit is added between the power supply unit and the display unit, and the display unit is switched from the sleep mode to release the laundry processing machine from the active standby mode. An improved circuit can be provided that can generate a wake up signal that can switch to normal mode.

The operations/functions of the laundry processing device described above can be applied in the same/similar manner to the control method of the laundry processing device.

The laundry treatment device according to an embodiment of the present invention is not limited to the configuration and method of the embodiments described above, but the embodiments are all or part of each embodiment so that various modifications can be made. may be configured by selectively combining.

Meanwhile, the method of operating the laundry processing machine of the present invention can be implemented as processor-readable code on a processor-readable recording medium provided in the laundry processing machine. Processor-readable recording media includes all types of recording devices that store data that can be read by a processor.

In addition, although preferred embodiments of the present invention have been shown and described above, the present invention is not limited to the specific embodiments described above, and the technical field to which the invention pertains without departing from the gist of the present invention as claimed in the claims. Of course, various modifications can be made by those skilled in the art, and these modifications should not be understood individually from the technical idea or perspective of the present invention.

Claims (10)

display unit; and
A control unit that controls the display unit to enter a sleep mode based on power being applied to the display unit below a preset power,
a power supply unit that supplies alternating current power to the display unit in order to switch the display unit that has entered the sleep mode to a normal mode; and
It is provided between the power supply unit and the display unit, and further includes a signal conversion unit that converts the AC power supplied from the power supply unit into a signal necessary for switching from the sleep mode to the normal mode,
The signal converter,
A rectifier that converts the AC power received from the power supply unit into direct current power; And
It includes a buffer unit that removes noise from the DC power converted by the rectifier unit, generates an edge signal, and transmits it to the display unit,
The buffer unit,
A laundry treatment device comprising a buffer that inverts the direct current power to remove noise from the direct current power and form an edge signal that switches the sleep mode of the display unit to a normal mode. According to claim 1,
The control unit,
A laundry processing device that enters the laundry processing device into an active standby mode based on the display unit entering a sleep mode. According to claim 1,
When the signal converted by the signal conversion unit is applied to the display unit, the display unit is switched to a normal mode, and the control unit releases the laundry treatment apparatus from the active standby mode. delete According to claim 1,
The rectifier unit,
A diode portion that passes only positive signals from the AC power supply; and
A laundry treatment device including a capacitor unit that generates the passed positive signal as direct current power. According to claim 5,
The diode unit is a laundry treatment device including a capacitor and two diodes. According to claim 5,
The capacitor part,
A laundry treatment device that is formed to be connected to the diode portion and the ground, generates the direct current power, and removes ripple. According to claim 1,
The buffer unit,
A laundry processing device including a level shifter for level shifting the edge signal. delete According to claim 8,
The level shifter is,
A laundry treatment device that adjusts the size of the edge signal to correspond to the operating voltage of the display unit.