CN100403199C - Computerized controller for electric pressure cooker - Google Patents
Computerized controller for electric pressure cooker Download PDFInfo
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- CN100403199C CN100403199C CNB021344183A CN02134418A CN100403199C CN 100403199 C CN100403199 C CN 100403199C CN B021344183 A CNB021344183 A CN B021344183A CN 02134418 A CN02134418 A CN 02134418A CN 100403199 C CN100403199 C CN 100403199C
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Abstract
The present invention discloses a computer controller for an electric pressure cooker, which belongs to the technical field of electronic technology. The present invention comprises a hardware part and a software part, wherein the hardware part comprises a microcomputer controller, a power supply circuit, a reset circuit, a key input circuit, a clock circuit, a temperature detection circuit, a display circuit, a sound prompt circuit and an output circuit, and all the circuits are mounted on a circuit board. The present invention controls the bottom temperature of an electric pressure cooker to indirectly control the pressure in the electric pressure cooker. The present invention accurately controls the pressure in the electric pressure cooker, greatly improves the safety performance of the electric pressure cooker, and simplifies the installation procedures. The present invention has the characteristics of perfect function, flexibility, strong variation and low cost, so that the electric pressure cooker can be used extensively.
Description
Technical field:
The present invention relates to Computerized controller for electric pressure cooker, particularly a kind of Computerized controller for electric pressure cooker that adopts the control temperature to realize controlling the electric pressure cooking saucepan internal pressure belongs to electronic technology field.
Background technology:
In the recent period, look into by retrieval and newly find three kinds of Computerized controller for electric pressure cooker: 1, pertinent literature " pot of electric pressure enters into computer age " is published in " Chinese food " national power 99 (14) 35.Introduced a kind of electric pressure cooking saucepan that adopts the computer fuzzy control in the literary composition, heating power can be controlled and regulate to its controller automatically, can obtain best heating power when cooking various food, prevent the danger of UHV (ultra-high voltage), superhigh temperature work, meet power failure, system can keep memory, can work on when switching on again.2, pertinent literature " electric pressure cooking saucepan self-actuated controller " China Patent No.: CN2309769Y.This utility model provides a kind of electric pressure cooking saucepan self-actuated controller, it is characterized in that comprising magnetic pressure limiting valve, coil, coil amplifying circuit, single-chip microcomputer, relay control and power circuit, overcome the defective that inaccurate electric pressure cooking saucepan explosive that produces and culinary art poor effect were set because of the time.3, pertinent literature " electric pressure cooking saucepan controller " China Patent No. CN2345128Y, the control whether this controller switches on to the heating plate of electric pressure cooking saucepan, thereby the pressure in the pressure cooker is regulated, guaranteed that the user carries out cooking operation under the environment of safety.
The present invention and three kinds of top comparisons, the 2nd kind is more approaching prior art, but its implementation is inequality, the 2nd kind of employing be that the relation of the elastic deformation of handy coil and pressure realizes the control to pressure, and the present invention controls the temperature in the electric pressure cooking saucepan the bottom of a pan to reach the interior pressure of control electric pressure cooking saucepan, installation procedure when having simplified plant produced has widely reduced production cost, and its reliability also is greatly improved.
Summary of the invention:
The present invention has absorbed the advantage of similar products at home and abroad, and the control core has adopted the very high single-chip microcomputer of the ratio of performance to price, and computer controller has perfect in shape and function, and antijamming capability is strong, and cost is lower.
The present invention includes the hardware and software part, hardware comprises: microcomputer controller, power circuit, reset circuit, button inputting circuits, clock circuit, temperature sensing circuit, display circuit, auditory tone cues electric circuit, output circuit.Power circuit is made up of protective tube FUSE, transformer TRAN, silicon bridge B1, diode D2, D3, D4, D10, capacitor C 3, C6, C7, C9, C8, C10, three terminal regulator 7805, and output connects microcomputer controller IC1 the 20th, the 1st pin; The elementary winding of the protective tube FUSE series transformer TRAN of power circuit connects power supply again, and the secondary winding of transformer TRAN connects the input end of silicon bridge B1; Silicon bridge B1 one output terminating diode D2 positive pole, diode D2 negative pole connects the input end (1) of three terminal regulator 7805; The earth terminal (2) of another output termination three terminal regulator 7805 of silicon bridge B1; The output terminal of three terminal regulator 7805 (3) connects the positive pole of diode D10, and the negative pole of diode D10 meets power supply V
DDCapacitor C 7, C9 are in parallel with the input end (1) and the earth terminal (2) of three terminal regulator 7805; Capacitor C 8, C10 are in parallel with negative pole and three terminal regulator 7805 earth terminals (2) of diode D10; Three terminal regulator 7805 output terminals (3) connect diode D3 positive pole in addition, and diode D3 connects with diode D4, and the negative pole of diode D4 connects the 13rd pin of microcomputer controller IC1; Capacitor C 3, C6 are in parallel with negative pole and three terminal regulator 7805 earth terminals (2) of diode D4; Reset circuit is made up of resistance R 1, R3, R5, R7, R8, R9, capacitor C1, C2, triode Q5, Q6, output connects the 7th pin of microcomputer controller IC1, the resistance R 8 of reset circuit and resistance R 5 series connection, one of resistance R 8 terminates to the tie point of silicon bridge B1 output terminal and diode D2 positive pole, and resistance R 8 is connected the base stage of triode Q5 with the contact of resistance R 5; Emitter and the ground connection of another termination triode Q5 of resistance R 5, capacitor C 1 is in parallel with resistance R 5; The also contact of collector connecting resistance R1, the R9 of triode Q5, emitter and the ground connection of another termination triode Q6 of resistance R 9; The base stage of another termination triode Q6 of resistance R 1, collector connecting resistance R7, R3 and the contact of triode Q6; The other end of resistance R 3 connects the emitter of triode Q5, and capacitor C 2 negative terminals connect triode Q5 emitter, receive the 7th pin of microcomputer controller IC1 behind the other end of capacitor C 2 positive terminating resistor R7 again; Button inputting circuits is made up of resistance R 12, R13, R14, R15, R16, R17, R18, R20, R21, R22, R23, R24, R25, R26, R34, touch-switch KG, K1, K2, K3, K4, K5, K6, K7, K8, its output is received the 18th pin, the 17th pin, the 16th pin, the 15th pin of microcomputer controller ICI respectively and is received the 19th pin of microcomputer controller ICI, the 5th pin, the 6th pin by resistance R 11, R19, R27; The end parallel connection of button inputting circuits resistance R 17, R18, R34, R25, R15R12, R14, R26, R24 is ground connection again, and the other end is connected with the end of each touch-switch K3, K2, K1, K8, K7, K6, K5, K4, KG respectively successively; Meet power supply V after resistance R 13, R16, R20, R21, R22, R23, the R36 one end parallel connection
DD, the other end of resistance R 13, R16, R20, R21, R22, R23, R36 joins with another non-earth terminal of touch-switch K7, K6, K5, K4, K3, K2, K1 respectively successively; Touch-switch K7 and the 15th pin of receiving microcomputer controller IC1 after the non-earth terminal of K8 is connected, the 16th pin of the non-ground connection termination microcomputer controller IC1 of touch-switch K6, the 17th pin of the non-ground connection termination microcomputer controller IC1 of touch-switch K5; Touch-switch K4 and the 18th pin that meets microcomputer controller IC1 after the non-earth terminal of KG is connected; Touch-switch K3, K2, the non-earth terminal of K1 respectively with the 6th pin, the 5th pin, the 19th pin of receiving microcomputer controller IC1 after resistance R 27, R19, R11 one end are connected again respectively; Clock circuit is made up of capacitor C 11, C12, quartz crystal JIN, the 1st, 2,3 pin of serial connection input microcomputer controller IC1; Temperature sensing circuit is made up of resistance R 6, sensor PT and capacitor C 4, and resistance R 6 is connected with sensor PT, and capacitor C 4 is in parallel with sensor PT, resistance R 6 and the output of sensor PT contact is connect the 14th pin of microcomputer controller IC1; Display circuit is made up of resistance R 10, R11, R19, R27, R28, R29, R30, R31, R32, R33, R35, LED 1, LED2, LED3, LED4, LED5, LED6, LED7, LED8, charactron LED, triode Q1, Q2, Q3, Q4, and the base stage of triode Q1, Q2, Q3 series resistor R10, R30, R31 is respectively received the 12nd pin, the 10th pin, the 9th pin of microcomputer controller IC1 again; LED is exported the 19th pin, the 5th pin, the 6th pin, the 14th pin, the 15th pin, the 16th pin, the 17th pin, the 18th pin that series resistor R11, R19, R27, R28, R29, R32, R33, R35 respectively meet microcomputer controller IC1; Auditory tone cues electric circuit is made up of resistance R 4, hummer BUZ polyphone, and resistance R 4 connects microcomputer controller IC1 the 8th pin; Output circuit is made up of resistance R 2, diode D1, triode Q7, relay R E, and triode Q7 base stage crosstalk resistance R2 connects microcomputer controller IC1 the 11st pin, the collector of diode D1 and a termination triode Q7 after relay R E is in parallel, one termination power+12V.The break-make of relay R E control heat-generating disc HEAT, the whole control process of Computerized controller for electric pressure cooker IC1 be according to the temperature detection amount to temperature control.In order to realize controlling pressure in the electric pressure cooking saucepan indirectly by the control temperature, utilization of the present invention has float-actuated valve on the pot cover of electric pressure cooking saucepan, when the electric pressure cooking saucepan internal gas pressure does not surpass local atmospheric pressure, float-actuated valve will lose heart, in float-actuated valve loses heart process with the transition that keeps one's end up, the temperature in the electric pressure cooking saucepan the bottom of a pan will be to keep very steady for some time, the boiling point (using code name Tg100) of water expression under the just local atmospheric pressure of the temperature that this process measurement arrives, when determining Tg100, adopt the unsteady determining method of boiling point to realize.When the air pressure in the pressure cooker surpasses local atmospheric pressure, pressure in the increment of cooking bottom temperature and the electric pressure cooking saucepan is proportional, and its corresponding relation is as shown in the formula: PT=5 * (Tg-Tg100), in the formula: when PT one cooking bottom temperature is Tg, air pressure in the electric pressure cooking saucepan pot, unit are kPa; Temperature at the bottom of the Tg-, unit is degree centigrade, the temperature in the bottom of a pan during water boiling in the local atmospheric pressure of Tg100-is cooked.Definite process of Tg100 is that the software programming formula by single-chip microcomputer realizes computing and control procedure.
Description of drawings:
Fig. 1 is a hardware circuit principle block scheme of the present invention;
Fig. 2 is circuit theory diagrams of the present invention;
Fig. 3 is the dynamic determining method program flow diagram of boiling point of the present invention.
Embodiment:
The invention process is carried out with reference to circuit theory diagrams shown in Figure 2, has comprised each circuit shown in Fig. 1 block scheme in the circuit diagram, microcomputer controller shown in Figure 1, power circuit, reset circuit, button inputting circuits, clock circuit, temperature sensing circuit, display circuit, auditory tone cues electric circuit, output circuit.Above-mentioned each circuit is installed on the wiring board.As shown in Figure 3, software programming flow process of the present invention is determined the thermometric period T earlier by its flowcharting, and input temp signal Tgi calculates δ=Tgi-Tgi then
-1, if δ=± ε, then Tgi or Tgi
-1, be Tg100, if δ ≠ ± ε, then upgrade Tgi
-1, Tgi＞＞Tgi
-1
Claims (2)
1. Computerized controller for electric pressure cooker, comprise hardware and software section, hardware components comprises microcomputer controller, power circuit, reset circuit, button inputting circuits, clock circuit, temperature sensing circuit, display circuit, auditory tone cues electric circuit, output circuit, it is characterized in that: the power circuit of hardware components is made up of protective tube FUSE, transformer TRAN, silicon bridge B1, diode D2, D3, D4, D10, capacitor C 3, C6, C7, C8, C9, C10, three terminal regulator 7805, and power circuit output connects microcomputer controller IC1 the 20th pin, the 1st pin; The elementary winding of the protective tube FUSE series transformer TRAN of power circuit connects power supply again, and Secondary winding of transformer connects the input end of silicon bridge B1; Silicon bridge B1 one output terminating diode D2 positive pole, diode D2 negative pole connects the input end (1) of three terminal regulator 7805; The earth terminal (2) of another output termination three terminal regulator 7805 of silicon bridge B1; The output terminal of three terminal regulator 7805 (3) connects the positive pole of diode D10, and the negative pole of diode D10 meets power supply V
DDCapacitor C 7, C9 are in parallel with the input end (1) and the earth terminal (2) of three terminal regulator 7805; Capacitor C 8, C10 are in parallel with negative pole and three terminal regulator 7805 earth terminals (2) of diode D10; Three terminal regulator 7805 output terminals (3) connect diode D3 positive pole in addition, and diode D3 connects with diode D4, and the negative pole of diode D4 connects the 13rd pin of microcomputer controller IC1; Capacitor C 3, C6 are in parallel with negative pole and three terminal regulator 7805 earth terminals (2) of diode D4; Reset circuit is made up of resistance R 1, R3, R5, R7, R8, R9, capacitor C1, C2, triode Q5, Q6, reset circuit output connects microcomputer controller IC1 the 7th pin, the resistance R 8 of reset circuit and resistance R 5 series connection, one of resistance R 8 terminates to the tie point of silicon bridge B1 output terminal and diode D2 positive pole, and the contact of resistance R 8 and resistance R 5 connects the base stage of triode Q5; Emitter and the ground connection of another termination triode Q5 of resistance R 5, capacitor C 1 is in parallel with resistance R 5; The also contact of collector connecting resistance R1, the R9 of triode Q5, emitter and the ground connection of another termination triode Q6 of resistance R 9; The base stage of another termination triode Q6 of resistance R 1, collector connecting resistance R7, R3 and the contact of triode Q6; The other end of resistance R 3 connects the emitter of triode Q5, and capacitor C 2 negative terminals connect triode Q5 emitter, receive the 7th pin of microcomputer controller IC1 behind the other end of capacitor C 2 positive terminating resistor R7 again; Button inputting circuits is made up of resistance R 12, R13, R14, R15, R16, R17, R18, R20, R21, R22, R23, R24, R25, R26, R34, touch-switch KG, K1, K2, K3, K4, K5, K6, K7, K8, its output is received the 18th pin, the 17th pin, the 16th pin, the 15th pin of microcomputer controller IC1 respectively and is received the 19th pin of microcomputer controller IC1, the 5th pin, the 6th pin by resistance R 11, R19, R27; The end parallel connection of button inputting circuits resistance R 17, R18, R34, R25, R15, R12, R14, R26, R24 is ground connection again, and the other end is connected with the end of each touch-switch K3, K2, K1, K8, K7, K6, K5, K4, KG respectively successively; Meet power supply V after resistance R 13, R16, R20, R21, R22, R23, the R36 one end parallel connection
DD, the other end of resistance R 13, R16, R20, R21, R22, R23, R36 joins with another non-earth terminal of touch-switch K7, K6, K5, K4, K3, K2, K1 respectively successively; Touch-switch K7 and the 15th pin of receiving microcomputer controller IC1 after the non-earth terminal of K8 is connected; The 16th pin of the non-ground connection termination microcomputer controller IC1 of touch-switch K6; The 17th pin of the non-ground connection termination microcomputer controller IC1 of touch-switch K5; Touch-switch K4 with connect microcomputer controller IC1 the 18th pin after the non-earth terminal of KG is connected; Touch-switch K3, K2, the non-earth terminal of K1 respectively with the 6th pin, the 5th pin, the 19th pin of receiving microcomputer controller IC1 after resistance R 27, R19, R11 one end are connected again respectively; Clock circuit is made up of with quartz crystal JIN capacitor C 11, C12 and is connected in series the 1st, 2,3 pin that output meets microcomputer controller ICI, temperature sensing circuit is made up of resistance R 6, capacitor C 4, sensor PT, be connected in series with resistance R 6 after capacitor C 4 and the sensor PT parallel connection, microcomputer controller IC1 the 14th pin is delivered in output; Display circuit is by resistance R 10, R11, R19, R27, R28, R29, R30, R31, R32, R33, R35, LED 1, LED2, LED3, LED4, LED5, LED6, LED7, LED8, charactron LED, triode Q1, Q2, Q3, Q4 forms, resistance R 10, R30, R31 connects the 12nd pin of microcomputer controller IC1 respectively, the 10th pin, the 9th pin, and by resistance R 11, R19, R27, R28, R29, R32, R33, R35 receives the 19th pin of microcomputer controller IC1 respectively, the 5th pin, the 6th pin, the 14th pin, the 15th pin, the 16th pin, the 17th pin, the 18th pin, LED 1-LED8 respectively with resistance R 35, R33, R32, R29, R28, R27, R19, R11 joins; Auditory tone cues electric circuit is composed in series by resistance R 4, hummer BUZ, and the 8th pin of resistance R 4 and microcomputer controller IC1 joins; Output circuit is made up of resistance R 2, diode D1, triode Q7, relay R E, resistance R 2 links to each other with the 11st pin of microcomputer controller IC1, the base stage of another termination triode Q7, diode D1 and relay R E also connect back one termination triode Q7 collector, one termination power+12V, can make contact closure to heat-generating disc power supply heating when relay R E switches on, foregoing circuit is all installed in the circuit board.
2. computer controller according to claim 1 is characterized in that the program circuit of software is: determine the thermometric period T earlier, input temp signal Tgi calculates δ=Tgi-Tgi then
-1, if δ=± ε, then Tgi or Tgi
-1Be Tg100, if δ ≠ ± ε, then upgrade Tgi-1, Tgi＞＞Tgi
-1
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021344183A CN100403199C (en) | 2002-10-13 | 2002-10-13 | Computerized controller for electric pressure cooker |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021344183A CN100403199C (en) | 2002-10-13 | 2002-10-13 | Computerized controller for electric pressure cooker |
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| Publication Number | Publication Date |
|---|---|
| CN1470965A CN1470965A (en) | 2004-01-28 |
| CN100403199C true CN100403199C (en) | 2008-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021344183A Expired - Fee Related CN100403199C (en) | 2002-10-13 | 2002-10-13 | Computerized controller for electric pressure cooker |
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| Country | Link |
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| CN (1) | CN100403199C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101763127B (en) * | 2009-12-16 | 2012-07-04 | 电子科技大学 | Control method of pressure cooker |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2634914A1 (en) * | 1988-08-01 | 1990-02-02 | Terraillon | Electronic control device for a pressure cooker |
| US5701805A (en) * | 1996-02-28 | 1997-12-30 | Daewoo Electronics Co., Ltd. | Steam pressure rice cooker with an auxiliary steam pressure exhausting device |
| CN2309769Y (en) * | 1997-12-26 | 1999-03-10 | 张振华 | Electric pressure cooker automatic controller |
| CN2345128Y (en) * | 1998-09-28 | 1999-10-27 | 朱学钊 | Controller for electric pressure cooker |
| JP2000229031A (en) * | 1999-02-10 | 2000-08-22 | Zojirushi Corp | Pressurized rice cooker |
-
2002
- 2002-10-13 CN CNB021344183A patent/CN100403199C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2634914A1 (en) * | 1988-08-01 | 1990-02-02 | Terraillon | Electronic control device for a pressure cooker |
| US5701805A (en) * | 1996-02-28 | 1997-12-30 | Daewoo Electronics Co., Ltd. | Steam pressure rice cooker with an auxiliary steam pressure exhausting device |
| CN2309769Y (en) * | 1997-12-26 | 1999-03-10 | 张振华 | Electric pressure cooker automatic controller |
| CN2345128Y (en) * | 1998-09-28 | 1999-10-27 | 朱学钊 | Controller for electric pressure cooker |
| JP2000229031A (en) * | 1999-02-10 | 2000-08-22 | Zojirushi Corp | Pressurized rice cooker |
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| Publication number | Publication date |
|---|---|
| CN1470965A (en) | 2004-01-28 |
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Owner name: GUANGZHOU QINGTIAN INDUSTRY CO.,LTD. Free format text: FORMER OWNER: WEINA ELECTRONIC SCI. + TECH. CO., LTD., GUANGZHOU Effective date: 20050708 |
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Effective date of registration: 20050708 Address after: 510665 C1-D, east suburb industrial park, Zhongshan Avenue, Guangzhou, Tianhe District, Guangdong Applicant after: Qingtian Industry Co., Ltd., Guangzhou Address before: 510665 Guangdong city of Guangzhou province Tianhe District No. 5254 road first floor two floor Applicant before: Weina Electronic Sci. & Tech. Co., Ltd., Guangzhou |
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