KR910019567A - Electric pressure cooker control method and device - Google Patents

Abstract

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Description

Electric pressure cooker control method and device

Since this is an open matter, no full text was included.

1 is a circuit diagram of the present invention, FIGS. 2-1 to 2-4 are flowcharts for explaining the present invention, and FIG. 3 is a flowchart of a low temperature check subroutine.

Claims (8)

In the electric pressure cooker control apparatus using a microprocessor, the abnormality caused by the first reset unit 108 and thermistor TS ₁ for detecting the actual input voltage or less from the V _CC voltage and V _DD of the constant voltage unit 106. The output of the second reset unit 109 for detecting the absence of the inner pot by the high temperature and the inner pot presence detection switch SW ₁ has the reset terminal of the microprocessor 101 ( ), And the output of the temperature detector 103 for sequentially detecting low, medium, and high temperature is input to the corresponding temperature detection input terminal G ₂ and connected to the low active key signal input terminal G ₀ , G ₃ , 1N ₁ , 1N ₂ ) have ground level by white rice cooking selector switch (SW ₂ ), cancel switch (SW ₃ ), brown rice cooking selector switch (SW ₄ ), steaming selector switch (SW ₅ ), respectively. A cancel display unit 104 is connected to a cancel output terminal D ₀ that outputs a low level when the key signal is input by the cancel switch SW ₃ , and compares the V _CC voltage and the V _DD voltage. The output of the 100V / 220V detector 102 for detecting the 100V / 220V input voltage and the output of the trigger sync signal generator 110 are respectively applied to the input voltage determination terminal G ₁ and the synchronization input terminal 1N ₀ . connections, and the input voltage determine the terminal (G ₁₎ and the synchronization input terminal lines on the basis of the input signal to the (1N ₀₎ Typically the output of the zero trigger terminals (L _0, L ₁₎ for outputting a control signal of the respective first and second cross point, the heater (H _1, H ₂₎ first and second triac (TRC _1, connected to the TRC ₂ ) A sound output terminal (SO) connected to the control first and second triac controllers 111 and 112 to be applied as a trigger signal and outputting a high level according to the key input of the mode selection switches SW ₂ , SW ₄ and SW ₅ ) And the lamp output terminal (L ₂ -L ₆ ), the control device of the electric pressure cooker, characterized in that configured to connect the key signal and alarm output unit 105 and the function display unit 113, respectively. The terminal D _{1 to} D ₃ of claim 1, wherein the temperature detector 103 sequentially outputs low levels according to the temperature detection signal of the comparator IC ₂ provided to the temperature detection terminal G ₂ . Low and medium temperature by thermistor TS ₁ by connecting the V _DD divider voltage between any one of the resistors R ₇ -R ₉ connected to the resistor R _{6 to} the reference voltage of the comparator IC ₂ . , The high temperature detection signal is configured to be sequentially output from the comparator (IC ₂ ). 3. The control apparatus of an electric pressure cooker according to claim 1 or 2, wherein the thermistor (TS ₁ ) is installed outside the inner pot for accurate temperature detection. An electric pressure cooker control method using a microprocessor, the method comprising: initializing a microprocessor in a low active state; Selecting, by the microprocessor, the first heater and / or the second heater according to the 100V / 220V detection signal; Checking the cancel key input and setting an internal timer; Check the rice cooking mode, brown rice cooking mode, and steaming 1, 2 mode in order and then select the corresponding mode; The control method of the electric pressure cooker, characterized in that selectively executed. (1) In the rice cooking mode, a step of determining a small amount of cooking and a large amount of cooking by checking whether the heater heating plate is heated to the maximum supply power and reaching the set temperature from the set low temperature to the set medium temperature within a predetermined time; In the middle temperature, the power supply of 3/10 of the maximum power supply to the heater heating plate after the high temperature reaches the step of turning off the power supply for 9 minutes, and in the mass cooking mode, the maximum supply power to the heater heating plate from the beginning After reaching high temperature, add 2/10 of the maximum supply power for 4 minutes, and then perform the stepping for 5 minutes. (2) In the brown rice cooking mode, the heater heating plate is heated to medium temperature at the maximum supply power, and the power supply is cut off for 4 minutes, and thereafter, the heating step is further heated for 5 minutes with 2/10 power of the maximum supply power and steamed for 15 minutes. (3) In the steaming mode, the heater heating plate heats up the middle temperature to the maximum supply power and cuts off the power supply for 2 minutes, and in the steaming 1 mode, the heating power is heated for 4 minutes at 4/10 of the maximum power supply for 5 minutes. The steaming step for 2 minutes, the steaming 2 mode is heated for 25 minutes with 4/10 of the maximum power supply and the steaming step for 5 minutes. The control method of an electric pressure cooker according to claim 4, wherein the low temperature is set at 90 ° C, the medium temperature is 115 ° C, and the high temperature is 135 ° C. The method according to claim 4, wherein the input power of the heater hot plate is controlled by controlling the 10-second repetition timing inside the microprocessor using S ₁ . 5. The electric pressure cooker of claim 4, wherein the first and second heaters are designed to be controlled by a trigger signal of a microprocessor synchronized to a zero cross point when the first and second heaters are respectively input at an AC 220V input. Control method. The method of claim 7, wherein the capacity of the first and second heaters is set such that the sum of the heating powers by the first and second heaters when the AC 100V is input and the heating power by the second heaters when the AC 220V input is the same power. Control method of electric pressure cooker characterized in that. ※ Note: The disclosure is based on the initial application.