CN101776296A - Model selection control device of microwave oven and selection control method thereof - Google Patents
Model selection control device of microwave oven and selection control method thereof Download PDFInfo
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- CN101776296A CN101776296A CN 201010120893 CN201010120893A CN101776296A CN 101776296 A CN101776296 A CN 101776296A CN 201010120893 CN201010120893 CN 201010120893 CN 201010120893 A CN201010120893 A CN 201010120893A CN 101776296 A CN101776296 A CN 101776296A
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000003990 capacitor Substances 0.000 claims abstract description 16
- 238000006243 chemical reaction Methods 0.000 claims abstract description 11
- 238000005070 sampling Methods 0.000 claims description 12
- 238000012935 Averaging Methods 0.000 claims description 6
- 230000000052 comparative effect Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 1
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- 238000010411 cooking Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention relates to a machine type selection control device of a microwave oven and a selection control method thereof, which comprises an electric control board and a control chip and is characterized in that the electric control board is provided with a voltage detection circuit, and the voltage detection circuit comprises one or more than one type selection circuit, a capacitor, a first resistor and a second resistor; each type selection circuit is connected with the capacitor in parallel, one end of the circuit after being connected with the capacitor in parallel is respectively and electrically connected with one end of the first resistor and one end of the second resistor, and the other end of the circuit is grounded; the other end of the first resistor is electrically connected with an external power supply, and the other end of the second resistor is connected with an I/O conversion port of the control chip. The voltage detection circuit is simple, the circuit structure is small, the cost is low, the current passing through the I/O port of the chip can be limited through the second resistor, and the current overload in the control chip is avoided; the selection control method selects the model through the specific numerical value, effectively avoids the occurrence of the error selection of the model, and provides the function of risk selection warning.
Description
Technical field
The present invention relates to a kind of type device for selection controlling of micro-wave oven and select control method, belong to the type device for selection controlling of micro-wave oven and the improvement technology of selection control method thereof.
Background technology
For satisfying people the personalization of cooking is required needs, the micro-wave oven product has different power and function, therefore produced the various micro-wave oven product of model, the different model product all has difference because of function and control method, need to adopt different control programs, cause corresponding little process chip and micro-wave oven model as many, for improving versatility and production efficiency, reduce and produce and management cost, normally in little process chip, be provided with different control programs, wherein a kind of program of a kind of micro-wave oven correspondence of model, the corresponding selection of its control program and respective model is a problem that must solve, Chinese patent CN101055095A discloses the system of selection of a kind of micro-wave oven type, this method detects the level situation of change that type is selected all wire jumpers in the wire jumper by the level signal testing circuit, master controller is gathered this level situation of change, by the analysis software of storage processing in advance in the master controller, judge the model of micro-wave oven again by the wire jumper situation, said method is to judge type according to the information that has or do not have of voltage or electric current, can't judge the model of micro-wave oven by the concrete size of numerical value, therefore there is resistance rosin joint in the voltage detecting circuit easily in this type system of selection, the caused wire jumper false judgment of short circuit or short circuit and cause type to select wrong risk, lack wrongheaded risk detection alarm prompting simultaneously, and its voltage detecting circuit is complicated, circuit structure is big, the cost height.
Summary of the invention
The objective of the invention is to overcome above-mentioned the deficiencies in the prior art and provide a kind of and can improve the personalized function demand that satisfy the different model product under the situation of product versatility, realize circuit miniaturization and low cost, avoid the electric current excess load in the control chip, can select type by concrete numerical value, effectively avoid occurring falsely dropping, the type device for selection controlling of risk of selection caution micro-wave oven is provided and selects control method.
Technical scheme of the present invention is: a kind of type device for selection controlling of micro-wave oven, comprise automatically controlled plate and control chip, it is characterized in that described automatically controlled plate is provided with voltage detecting circuit, voltage detecting circuit includes one or more model and selects circuit, electric capacity, first resistance and second resistance; Each model selects circuit in parallel with electric capacity, and circuit one end after the parallel connection is electrically connected other end ground connection with an end of first resistance and an end of second resistance respectively; The other end of first resistance is electrically connected with external power source, and the other end of second resistance is connected with the I/O conversion port of control chip.
Above-mentioned model selects circuit to comprise the 3rd resistance and the switch that is connected in series.
The I/O conversion port of above-mentioned control chip has A/D sampling function.
The I/O conversion port of above-mentioned control chip has the capacitor charge and discharge of collection time function.
A kind of selection control method of type device for selection controlling of micro-wave oven is characterized in that comprising the steps:
(1), start-up routine, the I/O interface of control chip is arranged to the A/D input pin;
(2), control chip carries out the A/D sampling by starting the I/O port;
(3), control chip is sampled by N the A/D that the I/O port repeats to preset;
(4), control chip calculates N sampling A/D value value of averaging;
(5), relatively, select corresponding type or send open circuit or short-circuit alarming signal according to comparative result mean value and the corresponding type A/D value that presets.
A kind of selection control method of type device for selection controlling of micro-wave oven is characterized in that comprising the steps:
(1), start-up routine, the I/O interface of control chip is arranged to output pin and is exported high level;
(2), behind the default M millisecond of time-delay, the I/O interface is arranged to input pin;
(3), timer adds 1, detects whether the I/O pin is low level;
(4), be low level, then write down timer value if the I/O pin detects;
(5), repeat to preset 2～4 steps N time;
(6), N timer value value of averaging calculated;
(7), compare mean value and corresponding type preheating setting time scope, the time range value that corresponding type is arranged is then selected the type of corresponding time range value according to mean value, finish type and select, if the time range value of no corresponding type, then send short circuit or open circuit or the inorganic type alarm signal.
(8), above-mentioned steps 4) in if detect I/O port level value when the low level, then detect whether super large of timer data, if timer data super large not then returns step 4), if the timer data super large then sends short circuit or breaking alarming signal.
The present invention is owing to adopt the structure that disposes electric capacity, first resistance and second resistance and one or more models selection circuit in voltage detecting circuit, and the combination of opening or closing by the on ﹠ off switch of different choice circuit just can realize 2
NPlant the selection of type, therefore, not only voltage detecting circuit is simple for it, and circuit structure is little, and cost is low, and can come the electric current of restricted passage chip I/O port by second resistance, avoids the electric current excess load in the control chip; The present invention selects control method to pass through concrete A/D value or timer value is selected type, effectively avoids type occurring falsely dropping, and the risk of selection alarm function is provided.
Description of drawings
The structural principle schematic diagram of the model selecting arrangement of Fig. 1 micro-wave oven of the present invention;
Fig. 2 the present invention selects the flow chart of the embodiment 1 of control method;
Fig. 3 the present invention selects the flow chart of the embodiment 2 of control method.
The specific embodiment
The invention will be further described below in conjunction with drawings and Examples.
As shown in Figure 1, the type device for selection controlling of micro-wave oven of the present invention, comprise automatically controlled plate (not shown) and control chip U1, described automatically controlled plate is provided with voltage detecting circuit 1, and voltage detecting circuit 1 includes 4 models and selects circuit 2, capacitor C 1, first resistance R 1 and second resistance R 2; 4 models select circuit 2 in parallel with capacitor C 1, and circuit one end after the parallel connection is electrically connected other end ground connection with an end of first resistance R 1 and an end of second resistance R 2 respectively; The other end of first resistance R 1 is electrically connected with external power source, and the other end of second resistance R 2 is connected with the I/O conversion port of control chip U1.
In the present embodiment, above-mentioned model selects circuit 2 to comprise the 3rd resistance R 3 and the K switch that is connected in series.The I/O conversion port of above-mentioned control chip U1 has A/D sampling function or gathers the capacitor charge and discharge time function.
The present invention selects the embodiment 1 of control method:
As shown in Figure 2, for the micro-wave oven model device for selection controlling that the I/O conversion port of control chip U1 has A/D sampling function, it selects control method to comprise the steps:
1, start-up routine is arranged to the A/D input pin with the I/O interface of control chip U1;
2, control chip U1 carries out the A/D sampling by starting the I/O port;
3, control chip U1 samples by N the A/D that the I/O port repeats to preset;
4, control chip U1 calculates N sampling A/D value value of averaging;
5, mean value is compared with the corresponding type A/D value that presets, select corresponding type or send open circuit or short-circuit alarming signal according to comparative result.
In the present embodiment, above-mentioned second resistance R 2 is used for restricted passage chip I/O port current, if first resistance R, 1 short circuit, then the A/D value at the link A place of second resistance R 2 and first resistance R 1, capacitor C 1 and model selection circuit 2 is a supply voltage, then, avoid the electric current excess load among the control chip U1 because of the existence that second resistance R 2 is arranged is unlikely to make the input current by the I/O port too high.
In addition, if first resistance R, 1 open circuit or selection short circuit or capacitor C 1 short circuit, then to obtain the A/D value by I/O mouth sampling be 0 to chip U1, if first resistance R, 1 short circuit, then the A/D value at A place is the same with supply voltage, then chip U1 obtains the supply voltage value of A/D value for maximum by the sampling of I/O mouth, chip sends the alarm signal of makeing mistakes immediately, if selecting the resistance value or the capacitance of capacitor C 1 in the circuit uses wrong, then chip U1 calculates the voltage range value that the mean value that obtains can not find corresponding micro-wave oven model according to N the A/D value that collects by the I/O mouth, chip also can send the alarm signal of makeing mistakes, therefore bring great convenience to maintenance, the serious consequence that also can avoid chip to falsely drop type effectively takes place, and security has obtained higher guarantee.
The present invention selects the embodiment 2 of control method:
As shown in Figure 3, have the micro-wave oven model device for selection controlling of gathering the capacitor charge and discharge time function for the I/O conversion port of control chip (U1), it selects control method to comprise the steps:
1, start-up routine is arranged to the I/O interface of control chip U1 output pin and is exported high level;
2, behind the default M millisecond of time-delay, the I/O interface is arranged to input pin;
3, timer adds 1, detects whether the I/O pin is low level;
4, if the I/O pin detects to low level, then write down timer value;
5, repeat to preset 2～4 steps N time;
6, N timer value value of averaging calculated;
7, compare mean value and corresponding type preheating setting time scope, the time range value that corresponding type is arranged is then selected the type of corresponding time range value according to mean value, finish type and select, if the time range value of no corresponding type, then send short circuit or open circuit or the inorganic type alarm signal.
8, above-mentioned steps 4) in if detect I/O port level value when the low level, then detect whether super large of timer data, if timer data super large not then returns step 4), if the timer data super large then sends short circuit or breaking alarming signal.
Because of second resistance R 2 is used for restricted passage chip I/O port current, when selecting the link A place of circuit 2 to detect under the situation of chargometer duration with definite micro-wave oven model type of capacitor C 1 in second resistance R 2 and first resistance R 1, capacitor C 1 and model, if when selecting certain resistive short under the closed situation of contactor, then be unlikely to make output current too high by the I/O port because of the existence that resistance R 2 is arranged.
Present embodiment has under the situation of above-mentioned advantage, can also effectively avoid occurring falsely dropping type: if first resistance R, 1 open circuit or selection short circuit or capacitor C 1 short circuit, then chip U1 is 0 by the A place that the I/O mouth collects discharge time, if R1 short circuit, then the voltage at A place is the same with supply voltage, then chip U1 is infinity by the A place that the I/O mouth collects discharge time, and chip sends the alarm signal of makeing mistakes immediately.If selecting the resistance value or the capacitance of capacitor C 1 in the circuit uses wrong, then the mean value that calculates according to N timer value collecting by the I/O mouth of chip U1 can not find the time range value of corresponding micro-wave oven model, chip also can send the alarm signal of makeing mistakes, therefore bring great convenience to maintenance, the serious consequence that also can avoid chip to falsely drop type effectively takes place, and security has obtained higher guarantee.
Claims (6)
1. the type device for selection controlling of a micro-wave oven, comprise automatically controlled plate and control chip (U1), it is characterized in that described automatically controlled plate is provided with voltage detecting circuit (1), voltage detecting circuit (1) includes one or more model and selects circuit (2), electric capacity (C1), first resistance (R1) and second resistance (R2); Each model selects circuit (2) in parallel with electric capacity (C1), and circuit one end after the parallel connection is electrically connected other end ground connection with an end of first resistance (R1) and an end of second resistance (R2) respectively; The other end of first resistance (R1) is electrically connected with external power source, and the other end of second resistance (R2) is connected with the I/O conversion port of control chip (U1).
2. the type device for selection controlling of micro-wave oven according to claim 1 is characterized in that above-mentioned model selection circuit (2) comprises the 3rd resistance (R3) and the switch (K) that is connected in series.
3. the type device for selection controlling of micro-wave oven according to claim 1 is characterized in that the I/O conversion port of above-mentioned control chip (U1) has A/D sampling function.
4. the type device for selection controlling of micro-wave oven according to claim 1 is characterized in that the I/O conversion port of above-mentioned control chip (U1) has the capacitor charge and discharge of collection time function.
5. the selection control method of the type device for selection controlling of micro-wave oven according to claim 3 is characterized in that comprising the steps:
(1), start-up routine, the I/O interface of control chip (U1) is arranged to the A/D input pin;
(2), control chip (U1) carries out the A/D sampling by starting the I/O port;
(3), control chip (U1) is sampled by N the A/D that the I/O port repeats to preset;
(4), control chip (U1) calculates N sampling A/D value value of averaging;
(5), relatively, select corresponding type or send open circuit or short-circuit alarming signal according to comparative result mean value and the corresponding type A/D value that presets.
6. the selection control method of the type device for selection controlling of micro-wave oven according to claim 4 is characterized in that comprising the steps:
(1), start-up routine, the I/O interface of control chip (U1) is arranged to output pin and is exported high level;
(2), behind the default M millisecond of time-delay, the I/O interface is arranged to input pin;
(3), timer adds 1, detects whether the I/O pin is low level;
(4), be low level, then write down timer value if the I/O pin detects;
(5), repeat to preset 2～4 steps N time;
(6), N timer value value of averaging calculated;
(7), compare mean value and corresponding type preheating setting time scope, the time range value that corresponding type is arranged is then selected the type of corresponding time range value according to mean value, finish type and select, if the time range value of no corresponding type, then send short circuit or open circuit or the inorganic type alarm signal.
(8), above-mentioned steps 4) in if detect I/O port level value when the low level, then detect whether super large of timer data, if timer data super large not then returns step 4), if the timer data super large then sends short circuit or breaking alarming signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101208935A CN101776296B (en) | 2010-03-01 | 2010-03-01 | Type selection control device and selection control method of microwave oven |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101208935A CN101776296B (en) | 2010-03-01 | 2010-03-01 | Type selection control device and selection control method of microwave oven |
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| CN101776296A true CN101776296A (en) | 2010-07-14 |
| CN101776296B CN101776296B (en) | 2011-09-14 |
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| CN2010101208935A Expired - Fee Related CN101776296B (en) | 2010-03-01 | 2010-03-01 | Type selection control device and selection control method of microwave oven |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102141785A (en) * | 2010-12-30 | 2011-08-03 | 美的集团有限公司 | Manufacturing method and control method of electronic product based on microcontroller |
| CN102497213A (en) * | 2011-12-14 | 2012-06-13 | 深圳市鑫汇科电子有限公司 | Multi-interface selection method and multi-interface selection circuit based on keyboard scan and display driving chip |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04174219A (en) * | 1990-11-05 | 1992-06-22 | Matsushita Electric Ind Co Ltd | High-frequency heating device |
| JPH07235867A (en) * | 1994-02-23 | 1995-09-05 | Sanyo Electric Co Ltd | Electronic device |
| CN1550718A (en) * | 2003-04-25 | 2004-12-01 | 乐金电子(天津)电器有限公司 | Control circuit of microwave oven |
| CN101055095A (en) * | 2007-05-27 | 2007-10-17 | 美的集团有限公司 | Control device and selection method for applicable machine type of electric control board of microwave oven |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4174219B2 (en) * | 2002-02-13 | 2008-10-29 | 高園産業株式会社 | Heat sealing device and medicine packaging device |
-
2010
- 2010-03-01 CN CN2010101208935A patent/CN101776296B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04174219A (en) * | 1990-11-05 | 1992-06-22 | Matsushita Electric Ind Co Ltd | High-frequency heating device |
| JPH07235867A (en) * | 1994-02-23 | 1995-09-05 | Sanyo Electric Co Ltd | Electronic device |
| CN1550718A (en) * | 2003-04-25 | 2004-12-01 | 乐金电子(天津)电器有限公司 | Control circuit of microwave oven |
| CN101055095A (en) * | 2007-05-27 | 2007-10-17 | 美的集团有限公司 | Control device and selection method for applicable machine type of electric control board of microwave oven |
Non-Patent Citations (1)
| Title |
|---|
| 《电机电器技术1》 19981231 胡佳宗 微波炉单片机控制器 30-32 1-6 , 第1期 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102141785A (en) * | 2010-12-30 | 2011-08-03 | 美的集团有限公司 | Manufacturing method and control method of electronic product based on microcontroller |
| CN102497213A (en) * | 2011-12-14 | 2012-06-13 | 深圳市鑫汇科电子有限公司 | Multi-interface selection method and multi-interface selection circuit based on keyboard scan and display driving chip |
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| CN101776296B (en) | 2011-09-14 |
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