KR960009231B1 - Automatic control of rice and quantity automatic dosing system - Google Patents

Abstract

The method automatically controls supplying the rice and the water, draining the water, and pouring the rice and the water into the rice cooker according to the user's selection by using a microcomputer software. The method comprises a 1st step of determining if a setting amount of rice is supplied by using a solenoid valve(V1); a 2nd step of switching off the solenoid valve(V1), and determining if a set time of supplying water elapsed by using a solenoid valve(V2); a 3rd step of switching off the solenoid valve(V2), and determining if a set time of cleaning the rice has passed by switching on a motor(M); a 4th step of switching off the motor(M), and determining if a set time of draining the water elapsed by switching on a solenoid valve(V3); a 5th step of determining if a set number of cleaning the rice is performed; a 6th step of draining the water or repeating the 2nd to 5th steps; a 7th step of supplying the rice and the water for the cooker.

Description

Automatic control of rice and quantity automatic dosing system

1 is a circuit diagram for automatic control of the automatic feeding system of the present invention.

Figure 2 (a) (b) is a signal flow diagram for the automatic control of the automatic injection system of the present invention.

* Explanation of symbols for main parts of the drawings

1: Micom 2: Rice volume selection control unit

3: quantity selection control unit 4: motor driver

5-8: Valve driver IC1, IC2: Optical isolation device

R1-R5: resistor Q1, Q2: transistor

VR1, VR2: Variable resistor OP1, OP2: Comparator

TDl, TD2: Triac C1, C2: Condenser

BD1: Bridge diode LED1, LED2: Light emitting diode

V1-V4: Solenoid Valve M: Motor

D1 diode

The present invention relates to a rice and quantity automatic dosing machine for making rice, rice and water automatic dosing machine to automatically control the rice and water supply, drainage and the mixture of rice and water according to the user's choice by using the software function of Mycom It relates to an automatic control method of the system.

In general, the method of cooking rice is to wash the rice manually before the rice is cooked and then pour water and cook the rice by experience-based measuring means according to the amount of rice. Because it is difficult to adjust the amount of water accurately, there is an uncomfortable flaw, such as rice cooked or cooked, as well as the manual washing of the rice had a defect that makes you feel more inconvenience in cold winter.

In order to solve the above drawbacks, the automatic application of rice and water quantity to make a rice with a prior application (patent application 88-14264) includes a rectifier circuit part, rice amount selection control part, quantity selection refining part, time delay circuit part and motor drive and solenoid By automatically controlling the amount of rice and water by using a hardware configured as a valve drive unit, after the rice and water is automatically put into the washing function by driving the motor, it is supplied to the cooking machine to perform the cooking operation.

At this time, when the amount of rice for cooking was set, the automatic function of rice and quantity was controlled by controlling the valve drive of one surface through a mechanical time delay timer compared with the set amount.

By the way, in the above-described automatic adjustment input device, the system is complicated by the continuous control of the system by a mechanical timer, and the cooking time is fixed by using a mechanical timer for the cooking operation. Therefore, the cooking operation cannot be arbitrarily changed. There was a downside.

In addition, when performing the drainage function by overflowing the water to wash the rice there was a disadvantage that the rinsing of the rice is not performed cleanly with a single rice washing operation.

In view of the above disadvantages, the present invention simplifies the cooking setting by adjusting the driving and driving time of the valve through the software function of the microcomputer and performs a suitable cooking operation by automatically adjusting the amount of rice and water. Invented an automatic control method of the rice and quantity automatic dosing system to be described, as described in detail by the accompanying drawings as follows.

FIG. 1 is a circuit diagram for automatic control of the automatic input system of the present invention. As shown therein, the reference power source for the initial value is supplied to the non-inverting (+) side of the comparator OP1 through the variable resistor VR1 and the resistor R12. The amount of rice to be sensed through the resistors R10 and R11 and then applied to the terminal CS1 of the microcomputer 1 by comparing the power according to the supply of rice applied to the inverting (-) side of the comparator OP1. Through the selection adjusting unit 1, the variable resistor VR2, and the resistor R15, a reference power source corresponding to the supply quantity is applied to the non-inverting (+) side of the comparator OP2, and then the resistors R13 and R14 are applied. A quantity selection control unit 2 for comparing the power according to the amount of change of water detected through the comparator OP2 and being applied to the inverting (-) side of the comparator OP2, and transmitting the same to the terminal CS2 of the micom 1; The driving of the transistor Q1 is controlled through the bias resistors R1 and R2 by the output P1 of 1) so that the optical insulation device IC1 is driven through the light emitting diode LED1. The motor driver 4 controls the washing motor M through each of the resistors R3-R4 and the triac TD1 connected to the condenser C1, and the output P2 of the microcomputer 1. Driving of the transistor Q2 is controlled through the bias resistors R6 and R7, and the photo-insulating element IC2 is controlled through the light emitting diode LED2 to control the resistors R8-R10 and the capacitor C2. A valve driver 5 for controlling the connected triac TD2 to control the rice injection solenoid valve V1 through the rectifying bridge diode BD1, and the same as the valve driver 5, and the water injection The solenoid valve V2, the drain solenoid valve V3, and the valve drive 6-8 for controlling the opening and closing solenoid valve V4 for water and rice, respectively, are described. D1 is a diode.

The operation and the effect of the present invention configured as described above will be described in detail with reference to the signal flow chart for the automatic control of FIGS.

First, by adjusting the amount of rice and water through the mask resistance (VR1) (VR2), the rice amount selection control unit (2) by the initial value setting the reference power by the rice adjustment amount applied through the variable resistor (VR1) The terminal CS1 of the microcomputer 1 is applied to the non-inverting (+) side of the comparator OP1 and then compared with the power supply according to the sensing of the rice supply applied to the inverting (-) side through the resistors R10 and R11. The amount of supply of the rice is controlled by applying a high potential signal to the non-inverting signal (+) of the comparator OP2. The amount of water supply is applied by applying a high potential to the terminal CS2 of the microcomputer 1 as compared with the power according to the detection of the amount of water supplied to the inverting (-) side through the resistors R13 and R10. Control.

Here, when the system is initialized with the toggle switch, the terminal CS1 of the microcomputer 1 maintains the low potential until the desired amount of rice is inputted, and the output P2 is output in the low potential state, and the low potential signal is output. The input valve driver 5 bridges the input AC power source AC by turning on the transistor Q2 through the bias resistor R6 to drive the optical insulation device IC2 and turning on the triac TD. By rectifying through the diode BD1 and turning on the solenoid valve V1, the rice injection valve is opened.

At this time, when the desired amount of rice is added, the rice amount selection control unit 2 lowers the potential according to the amount of rice sensed through the resistors R10 and R11 than the reference power set by the mask resistance VR1 to the comparator OP1. Outputs the high potential, the output P2 of the microcomputer 1 to which the high potential is applied to the terminal CS1 becomes the high potential, and the valve drive 5 receiving the high potential signal turns the transistor Q2 to turn. By turning off the triac TD2 through the optical insulation device IC2 by turning off, the rice charging process is completed by closing the solenoid valve V1 in which power is cut off.

After the rice filling process is completed, the microcomputer 1 controls the valve driver 6 in the same manner as the valve driver 5 with the terminal P3 at the low potential to turn on the solenoid valve V2 to turn on the water input valve. The water supply is opened and the water supply is performed for the set time DEL1. During the water supply, the microcomputer 1 determines whether the output of the water quantity selection control unit 3 becomes high potential.

At this time, if the amount of water is input after the set time DEL1 has elapsed, the water quantity selection control unit 3 is applied to the amount of water sensed through the resistors R13 and R14, rather than the reference power set by the variable resistor VR2. As the potential is lowered, the comparator OP2 outputs the high potential, so that the output P3 of the microcomputer 1 to which the high potential is applied to the terminal CS2 becomes the high potential, and the valve driver 6 receiving the high potential signal is received. Ends the water injection process by turning off the solenoid valve (V1).

Subsequently, when the rice input and water supply are completed, the output terminal P1 of the microcomputer 1 becomes low potential, and thus the motor driver 4 turns on the transistor Q1 through the bias resistor R1 and then the optical insulation device IC1. As the triac (IC1) is turned on, the motor (M) is driven to wash the rice during the set time (DEL2).

At this time, when the washing function is completed after the set time DEL2 has elapsed, the microcomputer 1 outputs a high potential to the output terminal P1, and thus the motor driver 4 may turn off the motor Q as the transistor Q1 is turned off. Will stop.

Then, the microcomputer 1 outputs the low potential signal to the output terminal P4 for the set time DEL3 so that the valve driver 7 turns on the solenoid valve V3 so that the drain valve is opened to remove the hot water of the washing tank. After the set time DEL3 has elapsed, the microcomputer 1 outputs a high potential signal to the output terminal P4 so that the solenoid valve V3 is turned off to terminate the drainage function.

At this time, the microcomputer 1 determines the degree of turbidity of the water, and determines how many times the rice is washed, and if the number of times of washing of the rice is not satisfied with the set number of times, the water supply function, the washing function, the draining function, and the water turbidity discrimination function are sequentially repeated. When the number of washes is satisfied and the rice is washed cleanly, the microcomputer (1) outputs a low potential to the output terminal (P3) and turns on the solenoid valve (V2) through the valve driver (6) to open the water input valve. By supplying clean water for cooking for a set time (DEL4).

Thereafter, when the set time DEL4 elapses, the microcomputer 1 outputs a high potential to the output terminal P3 to close the solenoid valve V2, thereby terminating the water input function, and when the function is completed, the microcomputer 1 The low potential is output to the output terminal P5, and the solenoid valve V4 is turned on through the valve driver 8 for the set time DEL5. Water is automatically put into the rice bowl, and after the set time (DEL5), the high potential is output to the output terminal (P5) by closing the water and rice open / close valve to terminate the rice and water input function to perform cooking.

As described in detail above, the present invention not only washes the rice cleanly by controlling the driving, state and driving time of the valve according to the user's preference, but also has the effect of satisfactory to the user by performing the desired cooking operation. have.

Claims (1)

A first step of determining whether rice is supplied by the set amount by setting rice and water input amount, setting the driving time of the valve and initializing the operation of the system, and then turning on the solenoid valve V1 to input rice; A second step of determining whether the set time DELl is reached when the rice is supplied by the amount set in step 1, when the solenoid valve V1 is turned off and the solenoid valve V2 is turned on to perform a water supply operation; A third time for determining whether the set time DEL2 has elapsed while turning off the solenoid valve V2 and turning on the motor M to perform a washing operation when the set time DEL1 has elapsed in step S2 In step S3, if the washing operation is completed after the setting time DEL2 has elapsed, the motor M is turned off, and the solenoid valve V3 is turned on to perform the draining operation.And a fifth step of determining whether the washing of the rice is performed as many times as the number of times after the set time DEL43 has elapsed in the fourth step, and the solenoid valve V3 is turned off when the drainage operation is completed. If the rice is not washed as many times as the set number in the fifth step, if the washing is repeated by repeating the fifth step to the fifth step for the set number of times and washing the rice by the set number of times, The solenoid valve V2 is turned on when the water supply is completed after the set time DEL4 has elapsed in the sixth step of determining whether the set time DEL4 has elapsed while turning on the solenoid valve V2. And turning off the solenoid valve (V4) for the set time period (DEL5) to supply the mixture of rice and water to the all-rounder.

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