KR0165061B1 - Method and apparatus for judgement of rice cooking ratio - Google Patents
Method and apparatus for judgement of rice cooking ratio Download PDFInfo
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- KR0165061B1 KR0165061B1 KR1019950036376A KR19950036376A KR0165061B1 KR 0165061 B1 KR0165061 B1 KR 0165061B1 KR 1019950036376 A KR1019950036376 A KR 1019950036376A KR 19950036376 A KR19950036376 A KR 19950036376A KR 0165061 B1 KR0165061 B1 KR 0165061B1
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J27/00—Cooking-vessels
- A47J27/56—Preventing boiling over, e.g. of milk
- A47J27/62—Preventing boiling over, e.g. of milk by devices for automatically controlling the heat supply by switching off heaters or for automatically lifting the cooking-vessels
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C5/00—Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K2207/00—Application of thermometers in household appliances
- G01K2207/02—Application of thermometers in household appliances for measuring food temperature
- G01K2207/08—Application of thermometers in household appliances for measuring food temperature with food recipients having temperature sensing capability
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Abstract
본 발명은 전기 밥솥에 관한 것으로, 특히 중량 센서와 초음파 센서를 이용하여 쌀과 물의 양을 정확히 감지하여 취반량을 결정하고 히터를 제어 함으로써 최적의 취사가 이루어 지도록 한 전기 밥솥의 취반량 판정 장치 및 그 방법에 관한 것이다.The present invention relates to an electric rice cooker, and in particular, by using a weight sensor and an ultrasonic sensor to accurately determine the amount of rice and water to determine the cooking amount and to control the heater, the cooking amount determination device of the electric rice cooker to achieve optimal cooking; It's about how.
이러한 본 발명은 오븐 뚜껑의 중앙부에 설치되어 물의 높이를 검지하는 초음파 센서와, 오븐의 하부 중앙에 설치되어 중량을 검출하는 중량 센서와, 초음파 센서 및 중량 센서에서 각각 얻어지는 물높이 및 중량으로 취반량을 결정하고 그 취반량에 상응하는 가열 화력을 결정하여 상부 히터와 측면 히터 및 하부 히터를 제어하여 취사를 진행시키는 마이콤을 구비하고, 취사 키가 눌러지면 오븐의 하부 중앙에 설치된 중량 센서로 쌀과물의 중량을 검출하는 제 1 과정과, 중량 검출후 오븐 뚜껑의 중앙부에 설치된 초음파 센서로 오븐내의 물의 높이를 검출하는 제 2 과정과, 검출한 중량과 물의 높이로 쌀과 물의 비율을 판단하여 취반량을 결정하는 제 3 과정과, 결정한 취반량에 대응되도록 가열 화력을 결정하는 제 4 과정을 순차 실행시켜 취사를 행하게 되는 것이다.The present invention is an ultrasonic sensor installed in the center of the oven lid to detect the height of the water, a weight sensor installed in the lower center of the oven to detect the weight, and the amount of water by the water height and weight obtained from the ultrasonic sensor and the weight sensor, respectively And the heating power corresponding to the cooking amount is determined by controlling the upper heater, the side heater and the lower heater and the microcomputer to proceed cooking, when the cooking key is pressed, the weight sensor installed in the lower center of the oven The first step of detecting the weight of the water, the second step of detecting the height of the water in the oven by the ultrasonic sensor installed in the center of the oven lid after the weight detection, and the ratio of rice and water based on the detected weight and the height of the water The third process of determining the cooking process and the fourth process of determining the heating power in order to correspond to the determined cooking amount are performed in order. Will be.
Description
제1도는 종래 전기 밥솥의 구성도.1 is a block diagram of a conventional electric rice cooker.
제2도는 종래 전기 밥솥에서 취반량 판정을 설명하기 위한 시간에 대한 온도 그래프.2 is a temperature graph with respect to time for explaining the determination of cooking amount in a conventional electric rice cooker.
제3도는 본 발명에 의한 전기 밥솥의 구성도.3 is a block diagram of an electric rice cooker according to the present invention.
제4도는 본 발명에 의한 취반량 판정 장치 블럭구성도.4 is a block diagram of a cooking quantity judging device according to the present invention;
제5도는 본 발명에 의한 취반량 판정 과정 흐름도.5 is a flowchart of a process for determining the amount of cooking according to the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for the main parts of the drawings
7 : 초음파 센서 8 : 중량 센서7: ultrasonic sensor 8: weight sensor
11 : 마이콤 12 : 부하 구동부11: micom 12: load driving unit
본 발명은 전기 밥솥에 관한 것으로, 특히 중량 센서와 초음파 센서를 이용하여 쌀과 물의 양을 정확히 감지하여 취반량을 결정하고 히터를 제어 함으로써 최적의 취사가 이루어지도록 한 전기 밥솥의 취반량 판정 장치 및 그 방법에 관한 것이다.The present invention relates to an electric rice cooker, and in particular, by using a weight sensor and an ultrasonic sensor to accurately determine the amount of rice and water to determine the amount of rice cooker to determine the cooking amount of the electric rice cooker to achieve optimal cooking by controlling the heater and It's about how.
종래의 전기 밥솥은 제1도에 도시된 바와 같이, 상측의 가열원인 상부 히터(1)와, 상측 온도를 감지하는 상부 온도센서(2)와, 중심 부분의 가열원인 측면 히터(3)와, 하부의 가열원이 하부 히터(4)와, 오븐(6)내의 온도를 측정하기 위한 하부 온도센서(5)로 구성 되었다.As shown in FIG. 1, a conventional electric rice cooker includes an upper heater 1 as an upper heating source, an upper temperature sensor 2 for sensing an upper temperature, a side heater 3 as a heating source in a central portion, The lower heating source consisted of a lower heater 4 and a lower temperature sensor 5 for measuring the temperature in the oven 6.
이와 같이 구성된 종래 전기 밥솥의 동작을 첨부한 도면 제2도를 참조하여 설명하면 다음과 같다.Referring to Figure 2 attached to the operation of the conventional electric rice cooker configured as described above are as follows.
먼저, 오븐(6)내에 취사할 쌀과 물을 넣은 후 밥솥을 동작 시키면 하부 히터(4)는 열원을 생성하여 일정시간 동안(제2도의 T1) 오븐(6)을 가열하게 되고, 일정 시간이 경과하면 하부 히터(4)의 구동을 오프하고 하부 온도센서(5)로 온도를 측정한다.First, after putting rice and water to be cooked in the oven 6 and operating the rice cooker, the lower heater 4 generates a heat source and heats the oven 6 for a predetermined time (T1 in FIG. 2). When the elapsed time, the driving of the lower heater 4 is turned off and the temperature is measured by the lower temperature sensor 5.
이때, 제어부(도면에는 미도시)는 하부 온도센서(5)로 감지되는 온도값이 최고조에 달하는 시간을 검색하여 1차로 인분을 판정하고, 최종 종료 시간(일예로 10분)의 온도를 감지하여 2차로 인분을 판정한다.At this time, the control unit (not shown in the drawing) determines the serving first by searching for the time when the temperature value detected by the lower temperature sensor 5 reaches the highest point, and detects the temperature of the final end time (for example, 10 minutes). Secondly, servings are determined.
즉, 제2도에 도시된 바와 같이, 일정시간 동안(T1) 하부 히터(4)를 구동시켜 가열을 하고, 일정 시간이 경과하면 하부 히터(4)를 오프시키고 하부 온도센서(5)로 온도를 측정하여 최고치 온도에 도달되는 시간으로 1차적인 인분을 결정하게 된다.That is, as shown in FIG. 2, the lower heater 4 is heated by driving the lower heater 4 for a predetermined time (T1), and when the predetermined time passes, the lower heater 4 is turned off and the temperature is lowered by the lower temperature sensor 5. The primary servings are determined by the time the peak temperature is reached.
상기에서 하부 히터(4)를 오프시키면 잠열에 의해 일정 시간후에 온도가 최고치에 도달하게 된다.When the lower heater 4 is turned off, the temperature reaches a maximum after a certain time due to latent heat.
이후, 하부 히터(4)를 오프시킨 상태에서 어느 정도의 시간이 다시 경과하면 온도가 내려가게 되고, 최종 완료 시간(T2)시점에 온도를 감지하여 2차적인 인분을 판정한다.Thereafter, when a certain amount of time elapses while the lower heater 4 is turned off, the temperature is lowered, and the secondary serving is determined by sensing the temperature at the time point of the final completion time T2.
이와 같은 방법으로 취반량이 결정되면 그 결정된 취반량에 의거 상부 히터(1), 측면 히터(3), 하부 히터(4)의 통전시간 및 주기를 결정하여 취사를 하게 된다.When the cooking amount is determined in this manner, cooking is performed by determining the energization time and period of the upper heater 1, the side heater 3, and the lower heater 4 based on the determined cooking amount.
그러나 이러한 종래의 전기 밥솥은 시간에 따른 온도 변화로 취반량을 결정하게 되는데, 이는 열판과 오븐의 밀착도 차이등에 의한 기구적 오차에 의해 감지되는 온도가 달라질 수 있어 정확한 취반량을 결정하는 것이 불가능 하며, 쌀과 물의 양을 각각 측정하지 않고 온도에 의한 인분 판정으로 취사를 하게 됨으로써 쌀과 물의 비율 차이로 화력 제어가 실패 하여 최적의 취사를 행할 수 없는 문제점이 있었다.However, such a conventional electric rice cooker determines the cooking amount by the temperature change over time, which is impossible to determine the exact cooking amount because the temperature detected by mechanical errors due to the difference in adhesion between the hot plate and the oven may be different. In addition, since cooking is performed by determining the amount of rice and water without measuring the amount of rice, respectively, there is a problem in that the control of the thermal power fails due to the difference between the ratio of rice and water, and thus the optimum cooking cannot be performed.
따라서 본 발명은 상기와 같은 종래 기술의 제반 문제점을 해결하기 위한 것으로서, 본 발명의 목적은 중량 센서와 초음파 센서를 이용하여 쌀과 물의 양을 정확히 감지하여 취반량을 결정하고 히터를 제어 함으로써 최적의 취사가 이루어지도록 한 전기 밥솥의 취반량 판정 장치 및 그 방법을 제공하는데 있다.Therefore, the present invention is to solve the problems of the prior art as described above, the object of the present invention is to accurately detect the amount of rice and water by using a weight sensor and an ultrasonic sensor to determine the cooking amount and to control the heater An object of the present invention is to provide a cooking amount judging device for a rice cooker and a method thereof.
이러한 본 발명의 목적을 달성하기 위한 기술적 수단은 오븐 뚜껑의 중앙부에 설치되어 물의 높이를 검지하는 초음파 센서와, 상기 오븐의 하부 중앙에 설치되어 중량을 검출하는 중량 센서와, 상기 초음파 센서 및 중량 센서에서 각각 얻어지는 물높이 및 중량으로 취반량을 결정하고 그 취반량에 상응하는 가열 화력을 결정하여 상부 히터와 측면 히터 및 하부 히터를 제어하여 취사를 진행시키는 마이콤으로 이루어진다.Technical means for achieving the object of the present invention is an ultrasonic sensor installed in the center of the oven lid to detect the height of the water, a weight sensor installed in the lower center of the oven to detect the weight, the ultrasonic sensor and the weight sensor It is made of a microcomputer to determine the cooking amount by the water height and weight obtained in each and to determine the heating power corresponding to the cooking amount to control the upper heater, the side heater and the lower heater to advance cooking.
본 발명의 목적을 달성하기 위한 방법은 취사 키가 눌러지면 오븐의 하부 중앙에 설치된 중량 센서로 쌀과 물의 중량을 검출하는 제 1 과정과, 중량 검출후 상기 오븐 뚜껑의 중앙부에 설치된 초음파 센서로 오븐내의 물의 높이를 검출하는 제2과정과, 상기 검출한 중량과 물의 높이로 쌀과 물의 비율을 판단하여 취반량을 결정하는 제 3 과정과, 상기 결정한 취반량에 대응되도록 가열 화력을 결정하는 제 4 과정으로 이루어진다.The method for achieving the object of the present invention is the first process of detecting the weight of the rice and water by the weight sensor installed in the lower center of the oven when the cooking key is pressed, and the ultrasonic sensor installed in the center of the oven lid after the weight detection A second process of detecting a height of water in the water, a third process of determining a rice-to-water ratio by determining the ratio of rice and water based on the detected weight and height of water, and a fourth process of determining heating power so as to correspond to the determined cooking amount The process takes place.
이하, 본 발명을 첨부한 도면에 의거 상세히 설명하면 다음과 같다.Hereinafter, described in detail with reference to the accompanying drawings of the present invention.
제3도는 본 발명에 의한 전기 밥솥의 구성도이다.3 is a block diagram of an electric rice cooker according to the present invention.
도시된 바와 같이, 상측의 가열원인 상부 히터(1)와, 상측 온도를 감지하는 상부 온도센서(2)와, 중심 부분의 가열원인 측면 히터(3), 하부의 가열원인 하부 히터(4)와, 오븐(6)내의 온도를 측정하기 위한 하부 온도센서(5)의 구성은 종래의 기술 구성과 동일하고, 여기에 오븐(6) 뚜껑의 중앙부에 설치되어 물의 높이를 검지하는 초음파 센서(7)와, 상기 오븐(6)의 하부 중앙에 설치되어 중량을 검출하는 중량 센서(8)가 부가되어 구성 되었다.As shown, the upper heater 1 as the upper heating source, the upper temperature sensor 2 for sensing the upper temperature, the side heater 3 as the heating source in the center portion, the lower heater 4 as the lower heating source and The configuration of the lower temperature sensor 5 for measuring the temperature in the oven 6 is the same as that of the prior art, and the ultrasonic sensor 7 installed in the center of the lid of the oven 6 to detect the height of water is provided. And a weight sensor 8 installed at the lower center of the oven 6 to detect the weight.
제4도는 본 발명에 의한 전기 밥솥의 취반량 판정 장치 블럭 구성도이다.4 is a block diagram of the cooking amount determination device of the electric rice cooker according to the present invention.
도시된 바와 같이, 장치 각 단에 구동 전원을 공급하는 전원부(9)와, 취사 기능 및 보온등의 기능을 입력하기 위한 키 입력부(10)와, 상부 온도센서(2)와, 하부 온도센서(5)와, 초음파 센서(7)와, 중량 센서(8)와, 상기 초음파/중량 센서(7)(8)의 출력 및 상/하부 온도센서(2)(5)의 출력에 따라 취사 기능과 보온 기능의 전반적인 제어를 행하는 마이콤(11)과, 상기 마이콤(11)에서 출력되는 부하 구동신호에 의해 부하(상부 히터, 하부 히터, 측면 히터)를 구동 시키는 부하 구동부(12)로 구성 되었다.As shown, the power supply unit 9 for supplying driving power to each stage of the device, the key input unit 10 for inputting the functions such as cooking and warming, the upper temperature sensor 2, the lower temperature sensor ( 5), the ultrasonic sensor 7, the weight sensor 8, the cooking function according to the output of the ultrasonic / weight sensor (7) (8) and the output of the upper and lower temperature sensors (2) (5) and The microcomputer 11 performs overall control of the thermal insulation function, and the load driver 12 driving the load (upper heater, lower heater, side heater) by the load driving signal output from the micom 11.
이와 같이 구성된 본 발명에 의한 전기 밥솥의 취반량 판정 장치의 작용 및 효과를 설명하면 다음과 같다.Referring to the operation and effects of the cooking amount determination device of the electric rice cooker according to the present invention configured as described above are as follows.
먼저, 전원부(9)에 의해 장치 각 단에 구동 전원이 공급된 상대에서 키 입력부(10)를 통해 취사 키가 눌러지면 마이콤(11)은 초음파 센서(7) 및 중량 센서(8)의 출력값을 검색하여 취반량을 판정한다.(S1-S3).First, when the cooking key is pressed through the key input unit 10 at the counter with the driving power supplied to each stage of the device by the power supply unit 9, the microcomputer 11 outputs the output values of the ultrasonic sensor 7 and the weight sensor 8. The amount of cooked rice is determined by searching (S1-S3).
즉, 중량 센서(8)는 오븐(6) 하부의 중앙부에 정착되어 오븐(6)의 무게(쌀과 물을 포함)을 검출하여 상기한 마이콤(11)에 인가하게 되고, 초음파 센서(7)는 상기한 오븐(6)의 뚜껑 중앙부에 정착되어 오븐(6)내의 물의 높이를 검출하여 상기한 마이콤(11)에 입력 시키게 된다.That is, the weight sensor 8 is fixed to the center portion of the lower part of the oven 6 to detect the weight (including rice and water) of the oven 6 and apply it to the microcomputer 11 described above, and the ultrasonic sensor 7 Is fixed to the central portion of the lid of the oven (6) detects the height of the water in the oven (6) is input to the microcomputer (11).
그리 하면 마이콤(11)은 입력되는 중량값으로 쌀과 물의 양을 판단하게 되고, 초음파 센서(7)에서 얻어지는 물높이로 쌀과 물의 비율을 판단하여 취반량(인분 결정)을 결정한다(S4).Then, the microcomputer 11 determines the amount of rice and water by the input weight value, and determines the cooking amount (serving determination) by judging the ratio of rice and water by the water height obtained by the ultrasonic sensor 7 (S4). .
여기서 초음파 센서(7)로 물의 높이를 검출하는 것은 동일한 중량일지라도 쌀이 7이고 물이 3인 경우와 쌀이 3이고 물이 7인 경우가 있기 때문에 정확한 취반량 결정을 위해 물높이를 검출하게 되는 것이다.Here, the ultrasonic sensor 7 detects the height of the water even though the weight is the same. However, since the rice is 7 and the water is 3 and the rice is 3 and the water is 7, the water height is detected for accurate determination of the amount of cooking. will be.
상기와 같이 취반량(인분)이 결정되면 쌀과 물의 중량으로 기본 화력을 결정하고, 쌀과 물의 비율로 조절 화력을 결정하여 가열 화력을 결정한다(S5).When the cooking amount (serving) is determined as described above, the basic firepower is determined by the weight of rice and water, and the heating power is determined by determining the control firepower by the ratio of rice and water (S5).
이와 같이 가열 화력이 결정되면 마이콤(11)은 그 결정한 가열 화력에 상응하도록 부하 구동신호를 출력시켜 부하 구동부(12)에 전달하게 되고, 이에 따라 부하 구동부(12)는 인가되는 부하 구동신호에 의해 상부 히터(1)와 측면 히터(3) 및 하부 히터(4)를 구동시켜 취사를 진행하게 되고, 이와 같이 취사가 진행되면 상부 온도센서(2)와 하부 온도센서(5)는 각각의 온도를 검출하여 마이콤(11)에 전달 함으로써 마이콤(11)은 각각의 히터(1,3,4,)의 온/오프를 제어하여 최적의 취사를 행하게 되는 것이다.When the heating power is determined as described above, the microcomputer 11 outputs a load driving signal to correspond to the determined heating power and transmits the load driving signal to the load driving unit 12. Accordingly, the load driving unit 12 is applied by the applied load driving signal. The upper heater 1, the side heater 3, and the lower heater 4 are driven to cook, and when cooking is performed in this way, the upper temperature sensor 2 and the lower temperature sensor 5 adjust their respective temperatures. By detecting and transmitting to the microcomputer 11, the microcomputer 11 controls the on / off of each heater 1, 3, 4, and performs optimum cooking.
이상에서와 같이 본 발명은 초음파 센서와 중량 센서로 오븐내의 물의 높이와 쌀과 물의 중량을 검출하여 취반량을 판정 함으로써 정확한 취반량 판정이 가능하여 최적의 취사를 이룰 수 있는 효과가 있다.As described above, according to the present invention, by measuring the height of the water in the oven and the weight of rice and water by the ultrasonic sensor and the weight sensor, the amount of rice is determined, and thus the amount of rice can be accurately determined.
또한, 기존과 같이 일정 시간 동안 히터를 구동시켜 가열을 하고 온도 센서로 온도를 측정하여 취반량을 결정하는 데에 따르는 온도 측정 시간을 단축할 수 있어 전체적인 취사시간을 단축 시킬 수 있는 효과가 있다.In addition, it is possible to shorten the overall cooking time by heating the heater for a predetermined time, and measuring the temperature with the temperature sensor as described above, thereby reducing the temperature measurement time according to determining the cooking amount.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019950036376A KR0165061B1 (en) | 1995-10-20 | 1995-10-20 | Method and apparatus for judgement of rice cooking ratio |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019950036376A KR0165061B1 (en) | 1995-10-20 | 1995-10-20 | Method and apparatus for judgement of rice cooking ratio |
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| Publication Number | Publication Date |
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| KR970019984A KR970019984A (en) | 1997-05-28 |
| KR0165061B1 true KR0165061B1 (en) | 1998-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| KR1019950036376A Expired - Fee Related KR0165061B1 (en) | 1995-10-20 | 1995-10-20 | Method and apparatus for judgement of rice cooking ratio |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100828644B1 (en) * | 2006-12-27 | 2008-05-09 | 웅진쿠첸 주식회사 | Control method of reservation cooking of electric pressure cooker |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100828644B1 (en) * | 2006-12-27 | 2008-05-09 | 웅진쿠첸 주식회사 | Control method of reservation cooking of electric pressure cooker |
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| KR970019984A (en) | 1997-05-28 |
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