KR950004261B1 - Washing machine - Google Patents

Abstract

The full automatic washing machine includes electric power voltage detecting means for detecting a change of an electric power voltage, first laundry volume sensing means for detecting a motor inflow current changed by the load on a washing motor, second laundry volume sensing means constructed with an automatic amplifier circuit for generating various signals by to the load on the washing motor, door opening and shutting sensing means for generating a predetermined signal by the opening/shutting state of the washing machine's door, auxiliary memory means for registering a motor load initial value in each electric power voltage level after dividing the electric power voltage into predetermined levels and exchanging information with main controlling means, key inputting means for establishing the volume of laundry and inputting a start order, and controlling means for outputting a washing start order when the laundry volume above the set one is sensed, thereby conveniently washing laundry as much as a user wants without an extra key manipulation.

Description

Fully automatic washing machine

1 is a block diagram according to the present invention.

2 is a temporary example of a specific circuit diagram according to the present invention.

3 is a flow chart according to the present invention.

* Explanation of symbols for the main parts of the drawings

1 control means 2 power supply voltage detection means

3: washing amount detection first means 4: washing amount detection second means

6: lid open detection means l3: auxiliary storage means (EEPROM)

The present invention relates to a fully automatic washing machine. In particular, when a user sets a washing amount to be washed and inputs the washing machine into a washing machine, the washing machine automatically detects this and automatically performs a washing operation when the washing amount is input into the washing machine. It is about.

In general, the automatic washing machine had to perform a certain switch operation in order for a user to put laundry into the washing machine and proceed with the washing operation.

However, such a constant key operation caused the user a hassle, the present invention was devised to remove the hassle, by setting a certain amount of laundry in the washing machine, the user to wash the laundry in the washing machine It is an object of the present invention to provide a washing machine that is put in, but automatically washes when the amount of laundry reaches a set amount.

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

1 is a block diagram showing the present invention, which detects a power supply voltage applied to a control means 1, which is a one-chip microcomputer incorporating a driving program of the present invention, and a washing machine, and detects a change in the power supply voltage to provide a constant signal. The power supply voltage detecting means 2, the washing load sensing first means 3 capable of detecting the amount of laundry put in by checking the load applied to the motor by detecting the current flowing through the washing motor, and the automatic amplification circuit And a washing amount detecting second means (4) for detecting the amount of laundry put into the washing tank of the washing machine as a difference between the reference signal and the comparison signal proportional to the washing amount, and the washing amount also put into the washing machine, The amount of washing is detected using the signal. The washing amount sensing third means 5 for determining all washing operation time, water level, and the intensity amount by the detected signal, and the lid opening detecting means 6 for detecting whether the washing machine lid is opened or not by generating on and off signals. And a key input means (7) configured to set a washing amount or generate a key input signal for starting washing operation, and the washing motor corresponding to the washing, dehydrating and rinsing strokes. Washing mode driving means (8) for driving, water supply valve driving means (9) for opening and driving the water supply valve in accordance with the output signal of the control means (1), and drainage corresponding to the output signal of the control means (6) The drain valve driving means 10 for opening the valve, the automatic detergent dosing driving means 11 for automatically driving the detergent according to the controlled output signal of the control means 1, and the control means 1 Current washing by controlled output Display means 12 for displaying the weight of the laundry amount (kg) set as part of the overall situation or automatic washing function as a digital amount, and in the detection of the laundry amount, several power voltage steps are provided to cope with fluctuations in the power voltage. And an auxiliary memory means for storing the initial washing machine under no-load state of the washing motor according to each step so that the recorded value of the narrator is exchanged with a predetermined input / output port of the control means (1), and the power is not erased even if the power is cut off. It consists of (13).

Referring to the specific circuit diagram of the main means according to the above configuration through the second diagram, first, the input port PI ₁ of the control means 1, which is a microcomputer, is a power source AC, a transformer T, a diode D _1. ), When the power supply voltage detecting means (2) consisting of a capacitor (C _l ) and a resistor (R _l ) is connected and a power source (AC) is applied, the applied AC power source (AC) is a diode (D _l ) and a capacitor (C). ₁ ) is converted into a DC component through a resistor (R _l ) and a constant DC level is input to the input port (PI ₁ ) of the control means (1), the control means (1) is a DC level of several stages already set Detect changes in current source (AC) in comparison with

In addition, the input port PI ₂ has a washing amount composed of a crank transformer (CT), a diode (D ₂ ) (D ₃ ), a resistor (R ₂ ), and a condenser (C ₂ ) connected to one line of the washing motor (M). When the sensing first means 3 is connected and the motor M is driven, the current flowing into the motor M is detected using the current transformer CT. As a result, the inflow current to the washing motor (M) causes a fluctuation, and this current passes through the current transformer (CT) and the diode (D ₂ ) (D ₃ ) and through the resistor (R ₂ ) and the condenser (C ₂ ). It is converted into a constant DC component and input to the input port (PI ₂ ). Therefore, the control means 1 reads this DC component and recognizes a predetermined washing amount by comparing with the DC level already set. In addition, the input ports PI ₃ of the control means 1 include resistors R ₃ to R ₁₄ , transistors Q _{1 to} Q ₄ , diodes D ₄ , D ₆ , and capacitors C _{3 to} C _5. Is a means for detecting the amount of washing input and forming a constant signal, such as the function of the washing amount detecting first means 3, connected to the washing amount sensing second means 4 configured as withdrawing the line from the contact resistance (R ₃₎ (R ₄₎ to distribute the Shiho through and the diode (D _5), a resistance (R _6), converts a constant direct current signal through the capacitor (C ₃₎ a transistor (Q _l The reference signal is connected to the base of the control panel), a line is drawn at one contact point of the starting capacitor (C ₆ ) of the washing motor driving means (8), and the signal is distributed through the resistor (R ₇ ) (R ₈ ). bay of the diode (D _4), the resistance (R ₉₎ and a capacitor, but via a (C ₄₎ is converted to a direct current component in contact with the base of the transistor (Q _2), wherein the transistor (Q ₂₎ To use the signal applied to the comparison signal for detecting setakryang.

Thus, the transistor (Q ₂₎ the differential amplifier circuit consisting of (Q _l) and peripheral circuits on the other hand with a constant DC reference signal is input to the base of the transistor (Q _l), the base, of the transistor (Q ₂₎ comparing the signal First, in order to stop the washing amount, the control means 1 drives the motor M of the washing motor driving means 8 for a predetermined time, and at this time, the starting condenser C ₆ is driven by the driving of the motor M. A voltage is applied at both ends, and this voltage changes depending on the load (to washing amount) of the washing motor (M). Therefore, such a signal changes the base signal of the transistor Q ₂ , and as the washing amount increases, the base voltage increases so that the emitter current and the comparative voltage of the transistor Q _l turned on by the reference voltage. Is amplified by the difference in the emitter current of transistor Q ₂ turned on by the signal, which turns on transistor Q ₃ and turns transistor Q ₄ on through resistor R ₁ (R ₁₁ ) the load in the resistance (R ₁₃₎ (R ₁₄₎ and but enter a constant low signal on the input port (PI ₃₎ of the control means (1) via a capacitor, an input port, which maintained the initial high relative (PI ₃₎ Therefore, the difference in the input time of the low signal is brought to the control means (1) Iuckford (PI

Based on the duration of the low signal input to ₃ ) to recognize the amount of washing compared to the already set time.

In addition, when the lid opening of the washing machine is opened by the lid opening detecting means 6 including a resistor R ₁₅ and a lid opening / closing switch SW connected to the input port PI ₄ of the control means 1, the switch SW is opened. When the low signal is turned on and input to the input pod PI ₄ , the control means 1 reading the input of the low signal is recognized as a start signal for detecting the washing amount, thereby detecting the washing amount first means 3 and washing amount. The signal input to the input port PI ₂ (PI ₃ ) is read through the second means 4. In addition, the input port group PIN of the control means 1 is connected to a key input means 7 which is composed of several switches and inputs a constant signal for a washing amount setting signal, a washing operation start signal, and the like. The output ports (PO ₁ ) (PO ₂ ) of ( ₁ ) have resistors R ₁₆ to R ₁₉ , transistors Q ₅ , Q ₆ , triac TC _l TC ₂ , and starting capacitor C ₆ ), when the washing motor driving means 8 including the inductor L and the motor M is connected and a low signal is output to the output port PO ₁ , the transistor Q ₅ is turned on via the resistor R ₁₆ . At the same time, the triac TC ₁ is turned on so that power AC is applied to the washing motor M so that the washing motor M rotates in a directional direction (hereinafter referred to as a right turn), and a low signal is output to the output port PO ₂ . When is outputted, transistor Q ₆ is turned on through resistor R ₁₈ and at the same time triac TC ₂ is conducted so that power AC is applied to motor M. The motor M performs the left turn driving in the direction opposite to the right turn direction.

In addition, the input / output ports PO ₃ (PO ₄ ) (PO ₅ ) (PI ₅ ) of the control means 1 have a chip selector port of the EEPROM that is the auxiliary storage means l 3 ( ), Clock pulse port ( ), The data output port (DO) and the data input port (DI) are connected to each other to exchange information with the control means (1), but the auxiliary memory means (13) to change the power supply voltage as shown in (Table 1) In order to cope, the power voltage is divided into several stages and stored in the memory, and the respective values of the no-load state, i.e., the initial state without laundry, are applied to the washing motor M at each stage. The sensor 4 detects and inputs each step by step, and opens and closes the lid of the lid opening and closing detection means 6 at each power supply voltage level, thereby executing the memory according to the laundry detection function.

In order to execute the write operation to the EEPROM, which is the auxiliary wing means 13, the control means 1 is a chip selector port ( After outputting low signal to enable, enable clock pulse port ( The clock pulses are read, but the data according to each step of the power supply voltage and the initial washing amount is output to the data force port DI in synchronization with the clock field to store necessary information.

TABLE 1

The operation and effects of the present invention configured as described above will be described with reference to the flowchart of FIG.

First, in order to apply the present invention to a washing machine, some prerequisites are required. First, the water hose must be opened. Second, do not put anything other than the laundry in the washing tank. The washing machine equipped with a fourth, the power supply (AC) of the washing machine set (SET) to always keep the on state, fifth, the lid of the washing machine must be closed, sixth, the drain hose to be drained down Place, seventh, separate the laundry, the function of the present invention is exhibited in the condition that the above prerequisites are satisfied.

First, through the key input means 7 to set the amount of laundry as the user wants to enter. Then, when the automatic washing kosuki (start switch key) is input, the control means 1 detects a signal input from the lid open / close detection means 6 and determines that the lid is opened. The power supply voltage is detected and stored in the built-in memory device. At this time, when the lid is closed by determining that the lid is closed, the washing amount is sensed through the washing amount sensing first means 3 and the washing amount sensing second means 4, and the control means 1 washes for a predetermined time in order to detect the washing amount. The motor driving means 8 drives the motor M with a predetermined output control to read signals input to the input port PI ₂ and the input port PI _{3 of} the control means 1.

The use of the opening of the lid as a laundry detection time signal is because opening and closing the lid is a recognition of the possibility that laundry has been put.

In addition, it is a function for mutual complementary use of two means, such as the washing amount detecting first means 3 and the washing amount detecting second means 4 to detect the washing amount.

In comparing the washing amount detected in this way, the control means 1 is a step corresponding to the power supply voltage detected by the power supply voltage detecting means 2 and the power supply voltage of each step stored in the auxiliary storage means 13, and thus no load. Read the initial value of the washing load state to the input port (PI ₅ ) and at this time the initial washing detection level corresponding to a specific level of the power supply voltage read out, the current washing amount detection first means (3) and the washing amount detection second means (4) It is determined whether the value is the amount of washing set by the user, compared to the washing amount detection level input from the user, and if the value is less than the set value, the above process is repeated from the opening or closing process of the lid.

Therefore, when the input current value of the washing amount detecting first means 2 exceeds the setting value or the determination result of the low level delay time of the washing amount detecting second means 4 determines that the set washing amount has been reached and washes. The control means (1) issues a small amount of water supply command for a predetermined time to the water supply valve drive means (9), and the washing amount rinsing, rinsing, The washing amount sensing action for dehydration time and detergent amount determination is also performed once.

Therefore, when the washing amount sensing is completed, the washing process is terminated by proceeding to the normal washing operation mode (MODE) by comparing with the already set value.

As described above, since the present invention automatically washes only the amount of washing set by the user using various means, there is no need for the hassle of key operation, and thus there is an advantage that the amount of laundry can be easily and conveniently washed.

Claims (4)

A power supply voltage detecting means 2 for detecting a change in the power supply voltage, a washing amount detecting first means 3 for detecting a motor inflow current varying in magnitude depending on a load applied to the washing motor M, and a washing motor ( Washing amount sensing second means (4) consisting of an automatic amplification circuit for generating a signal that changes the size according to the load applied to M), and lid opening and closing detection means (6) for generating a constant signal according to the opening or closing of the washing machine lid And a secondary memory means 13 for dividing the power supply voltage into predetermined steps and storing the initial value of the motor load in each of them so that information can be exchanged with the main control means 1, and a key for setting a washing amount and inputting a start command. Fully automatic laundry, characterized in that it comprises an input means (7) and a control means (1) for detecting the washing amount from the washing amount detection means (2) (3) and outputs a washing operation start command when a washing amount of more than the set washing amount is detected. . The method according to claim 1, characterized in that the control means (1) detects the power supply voltage currently applied when the lid of the washing machine is opened from the power supply voltage detection means (2) and sets the voltage at this time as a reference value for washing amount detection. Fully automatic washing machine. The automatic washing machine according to claim 1, wherein the control means (1) detects the washing amount by using at least two washing amount detecting means (3) when the lid of the washing machine is opened and closed. The method according to claim 1, wherein the control means (1) reads the value of the initial washing amount according to the power supply voltage currently applied from the protective storage means (13) at the time of detecting the washing amount, the initial washing amount value and the washing amount value currently detected and Fully automatic washing machine, characterized in that to determine the amount of washing in comparison.