CN2127589Y

CN2127589Y - Intelligent control device of mult-functional electric pot

Info

Publication number: CN2127589Y
Application number: CN 92229774
Authority: CN
Inventors: 张振华
Original assignee: Huaneng Communication Technology Co Beijing
Current assignee: Huaneng Communication Technology Co Beijing
Priority date: 1992-08-08
Filing date: 1992-08-08
Publication date: 1993-03-03
Anticipated expiration: 2002-08-08

Abstract

The utility model relates to an automatic temperature controlling device for an electric pot and is designed in order to automatically recognize the food amount in the pot to select different powers and time controlling parameters. The automatic temperature controlling device comprises a sensing apparatus, an amplifying apparatus, a temperature rising time measurement circuit, a single chip computer, a heating actuating mechanism, a liquid crystal display plate and the decoding driving apparatus of the liquid crystal display plate. The user inputs the food kind and the wished eating time and simultaneously, the display plate displays. The temperature rising time measurement circuit sends the voltage signal of the fixed temperature point measured by the sensing apparatus to the single chip computer. The single chip computer calculates the temperature rising speed and automatically selects different powers and time parameters depending on the empirical data. The automatic temperature controlling device for an electric pot has easy operation, multiple usages of one pot and good energy saving effect.

Description

Intelligent control device of mult-functional electric pot

The utility model relates to a kind of recloser that is exclusively used in firing equipment, relates to a kind of automatic temperature control of grill pan or rather.

The automatic temperature control of existing electric cooker generally is made up of control and heating two parts.Its control section comprises sensor and magnetic switch, when temperature reaches certain value in the pot for cooking rice, the magnetic of magnetic switch disappears, trip lever is resetted, cut off the heating power supply loop, owing to be a curve controlled temperature in accordance with regulations, thereby can not be according to a food species and pot what of interior quantity of food, adjust and adopt different heating curves, the grill pan that is equipped with this control device can only be used for cooking rice or gruel, and is if be used to boil milk, then often excessive, thereby limited its scope of application, making it to become electric cooker.

Modern grill pan control device, hope can be discerned a pot interior food species, can discern size of food again, to select different power contorl parameters and time control parameter, want handled easily simultaneously, use reliable, not only energy-conservation but also can guarantee the quality of cooking.

The purpose of this utility model is a kind of intelligent multifunctional grill pan control device of design, can be according to the selected kind of cooking, the automatic quantity of judging food in the pot treated, to select different heating curves, automatic transfer power, time, heat Whole Process Control, not only be used to cook, also can be used for doing other food, as boil milk etc., realize multi-purpose pot.

The basic functional principle of this control device is: when food heats, from its temperature uphill process, by measuring various kinds of foods used time when reaching 2 fixed temperature points, calculate temperature rise speed, thereby judge the quantity of the interior food of pot.Record a series of empirical data through a large amount of practices, these data are deposited in the memory, and generate corresponding power contorl parameters and time control parameter, realize the Based Intelligent Control of grill pan.

The utility model comprises the temperature sensor that temperature signal is changed into voltage signal, the executing agency of heating part and be the control circuit of core control part with the single-chip microcomputer.The temperature rise timing circuit of control circuit wherein, be positioned between temperature sensor and single-chip microcomputer, generate voltage signal according to the signal of telecommunication of temperature sensor corresponding to several fixed temperature points, the voltage signal that single-chip microcomputer receives corresponding to several fixed temperature points calculates temperature rise speed, and, determine power contorl parameters and time control parameter according to the temperature rise speed and the food species signal of manually inserting; Executing agency receives the work of single-chip microcomputer order control heating part; The display part reaches performed function at present according to the time of the hope feed that the data explicit user of single-chip microcomputer output is inserted.

Describe technology of the present utility model in detail below in conjunction with the embodiment accompanying drawing:

Accompanying drawing 1 is an intelligent multifunctional grill pan control device electrical schematic diagram.

Accompanying drawing 2 is an intelligent multifunctional grill pan control device display unit electrical schematic diagram.

Embodiment gets n=4, promptly get 4 fixed temperature points, as 80 ℃, 90 ℃, 100 ℃, 104 ℃, wherein preceding two lower temperature points, be used for for single-chip microcomputer measuring and calculating rate of rise in temperature, two higher temperature spots are respectively applied for and turn-off the heating part power supply, and Fig. 1, circuit shown in Figure 2 have constituted intelligent multifunctional grill pan control device of the present utility model.

Referring to accompanying drawing 1,100 is single-chip microcomputer (8031,8751) among the figure, and temperature sensor Z and peripheral circuit 101 thereof are converted to voltage signal with the kettle temperature signal.Transport and placing device A1(LM324) be connected into emitter follower 102, transport and placing device A2(LM324) be connected into amplifier 103, faint voltage signal is amplified and deliver to temperature rise timing circuit by 4 voltage comparator A3～A6(LM393) form.The parallel negative terminal that inputs to voltage comparator A3～A6 of the temperature ┈ voltage signal that amplifies, the reference potential of adjusting A3～A6 anode makes corresponding one by one with four temperature spots being scheduled to respectively, A3, A4 export single-chip microcomputer P1.0, P1.1 end to, A5, A6 export single-chip microcomputer INT1, INT0 end to, single-chip microcomputer according to a series of empirical datas of being stored and record reach predetermined temperature point the time used time, calculate temperature rise speed, judge size of food, take out corresponding power, time control parameter control heating overall process again.

It is relay circuit 104 that single-chip microcomputer 100 output control terminal P1.2 output control signals to executing agency, control heating power supply switch, it is buzzer circuit 105 that single-chip microcomputer 100 output control terminal P1.3 output control signals to executing agency, be controlled at digestion time and then send sound equipment prompting sound automatically, control device enters the constant temperature hold mode then.

Circuit 106 is start reset circuits among the figure, K1 is manual reset button, the push button that single-chip microcomputer P1.4～the P1.7 termination is gone into is inserted circuit 107, button switch K 2～the K5 that comprises pull-up resistor R12～R15 and serial connection thereof, wherein K2, K3 are used to insert and wish eating time, when comprising, branch (is commonly called as chow, started working) in the suitable moment of control device before chow, K4 is used to select food species, and present embodiment can be used for doing eight kinds of foods, and K5 is a "start" button.

108 is oscillating circuit among the figure, form by monostable oscillator 4047 and peripheral circuit thereof, its 12 pin exports 21 ends shown in Figure 2 to, as the synchronous working signal of decoding, driving, liquid crystal display, the P0.0～P0.7 of single-chip microcomputer 100, P2.0～P2.7, T0, T1,

,

, promptly 1～20 end is exported 5 groups of each 4 bit binary data signals to decoding shown in Figure 2, the brilliant thermostatic hold-time and the selected food species of being inserted that show of drive circuit feed flow.

Referring to accompanying drawing 2,200 is LCD panel (4320), reach decoding, the driver of liquid crystal display respectively from four group of 4 bit binary data 1～4,5～8,9～12,13～16 of Fig. 1 single-chip microcomputer 100,201,202,203 seven sections respective end that drive signal to LCD panel 200 of output a～g, 204(4056), show 0～90 number, 201～202 are used for minute demonstrations individual, ten, and 203～204 are used for individual, demonstration in ten hours.Reach the decoder driver 205(4054 of liquid crystal display from one group of 4 binary data 17～20 of Fig. 1 single-chip microcomputer 100), export the respective end of LCD panel to, to show selected food species.Embodiment adopts the mode of arrow points, and promptly when in the application drawing 1 during button switch K 5, the activity arrow points of Fig. 2 display board 200 is performed function at present.

The utility model is simple in structure, and is easy to use, and one pot of multipotency is a kind of novel domestic cookers.

Claims

1, a kind of intelligent multifunctional grill pan control device, comprise the temperature sensor that temperature signal is changed into voltage signal, the executing agency of heating part and be the control circuit of core control part with the single-chip microcomputer, it is characterized in that: the P1 mouth of described control circuit single-chip microcomputer, middle fracture INT0, INT1, and be connected to the temperature rise timing circuit that constitutes by n voltage comparator between described temperature sensor, n voltage comparator anode connects respectively and the voltage of n fixed temperature point reference voltage one to one, the negative terminal jointing temp sensor output of a described n voltage comparator.

2, a kind of intelligent multifunctional grill pan control device according to claim 1 is characterized in that being connected with behind the described control circuit single-chip microcomputer and is used to show the LCD panel of wishing eating time and current execution function and decoding thereof, drive circuit.

3, a kind of intelligent multifunctional grill pan control device according to claim 1 is characterized in that described control circuit single-chip microcomputer P1 mouth also is connected to insert the push button of wishing eating time and current execution function and insert circuit, is made up of resistance serial connection press button.

4, a kind of intelligent multifunctional grill pan control device according to claim 1 is characterized in that described control circuit single-chip microcomputer P1 mouth also is connected to the relay circuit that constitutes heating part executing agency.

5, a kind of intelligent multifunctional grill pan control device according to claim 1 is characterized in that described control circuit single-chip microcomputer P1 mouth also is connected to the buzzer circuit that sends the prompting sound.