CN104296191A - Electromagnetic oven and correction method thereof - Google Patents
Electromagnetic oven and correction method thereof Download PDFInfo
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- CN104296191A CN104296191A CN201310302836.2A CN201310302836A CN104296191A CN 104296191 A CN104296191 A CN 104296191A CN 201310302836 A CN201310302836 A CN 201310302836A CN 104296191 A CN104296191 A CN 104296191A
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- electromagnetic oven
- control module
- power
- signal
- module
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/06—Control, e.g. of temperature, of power
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Control Of Resistance Heating (AREA)
- Control Of Electrical Variables (AREA)
Abstract
The invention relates to an electromagnetic oven and a correction method thereof. The electromagnetic oven comprises a control module (6) and a power down detection module connection (5) connected with the control module (6). The electromagnetic oven is characterized in that the power down detection module (5) acquires power down signal in the case of power down and transmits the to the signal to the control module (6), and the control module (6) according to the power down signal records the control parameters at the moment as the rated output parameters. The invention does not need an electromagnetic oven power adjustment potentiometer or a plug-in EEPROM device, reduces the cost of circuit board, and improves the reliability and stability.
Description
Technical field
The present invention relates to electromagnetic oven field, particularly relate to a kind of electromagnetic oven and the bearing calibration thereof of being convenient to detection.
Background technology
Existing electromagnetic oven has current-voltage sampling circuit, and single-chip microcomputer controls electromagnetic stove power output by sample rate current magnitude of voltage.Current sample generally all adopts the circuit of current transformer or chaff manganese-copper filament sampling resistor composition.In production in enormous quantities manufacture process, the difference because of electronic devices and components itself causes the difference of sampling circuitry univers parameter, finally affects the difference of electromagnetic stove power output, causes some the electromagnetic stove power in batch production not meet the demands.Due to the inconsistency of component parameter in hardware circuit, the power of different machines can be caused to have error in various degree.
Two kinds of modes are generally had to carry out capability correction in prior art, mode one: adopt potentiometer alignment technique in current sampling circuit, the otherness of batch device is made up by the resistance value of people's for a change potentiometer, namely during artificial regulator potentiometer, the power output of electromagnetic stove also along with change, thus makes hardware circuit parameter reach unanimity; Mode two: adopt keyboard to regulate and correct electromagnetic stove power, then the data of adjustment are stored in plug-in eeprom chip, realize power consistent.
The utility model patent that the patent No. is " CN201020675384.4 ", denomination of invention is " a kind of power rapid adjusting device of induction cooker circuit board " discloses the electromagnetic oven means for correcting of a kind of automatic detection automatic calibration, adopts the stepper motor controlled by intelligent chip to replace manual adjustment potentiometer in this device.
Artificial regulator potentiometer, complex process, corrects electromagnetic stove power by workman's rotation screw cutter during production, causes production cost higher, and production efficiency also can be influenced simultaneously; Adopt keyboard to coordinate EEPROM to regulate and still need manual adjustment, operation is still complicated, and manufacturing cost is higher, and external EEPROM exists loss of data danger.Patent " CN201020675384.4 " is although the middle technical scheme recorded achieves automatic calibration, and cost is high.
Summary of the invention
For solving the problem, the invention provides a kind of cost low and be convenient to electromagnetic oven and the bearing calibration thereof of correct operation simultaneously.
For achieving the above object, the technical scheme that electromagnetic oven of the present invention adopts is: a kind of electromagnetic oven, the detection of power loss module comprising control module and be connected with described control module, it is characterized in that: described detection of power loss module gathers power-off signal when power down and passes to described control module, described control module according to described power-off signal record now controling parameters be specified output parameter.
First preferred version is: establish readable and writable memory in described control module, for storing described specified output parameter.Adopt this preferred version, the readable and writable memory inside established makes data more not easily lose.
Second preferred version is: described specified output parameter comprises at least one in current signal, voltage signal, power signal, impulse modulation width signal.Adopt this preferred version, make control module more easily determine the basic parameter of each shelves of electromagnetic oven.
3rd preferred version is: establish calibration mark register in described control module, whether has received described power-off signal for recording described control module.Adopt this preferred version, can avoid repeating to correct, save the operating time.
4th preferred version is: be located at same chip in described detection of power loss module and described control module.Adopt this preferred version, circuit production cost can be saved.
5th preferred version is: described control module is a microprocessor, and described power down module is described micro-process peripheral circuit.
The technical scheme that electromagnetic oven bearing calibration of the present invention adopts is: a kind of electromagnetic oven bearing calibration, is characterized in that, comprise the following steps:
(1) voltage-stabilized power supply, electrical parameters detection device and electromagnetic oven is connected successively;
(2) start electrical parameters detection device, start electromagnetic stove, electromagnetic stove internal control module, by reading whether correction bit in internal calibrations flag register is just, is that control module exports according to specified output parameter, otherwise enters (three);
(3) power output of described control module control electromagnetic oven progressively strengthens, when electrical parameters detection device display parameters are electromagnetic oven nominal parameter, disconnect electromagnetic oven power supply, described detection of power loss module acquires power-off signal also passes to described control module, and described control module record now controling parameters is specified output parameter and sets correction bit as just.
First preferred version is: described display parameters comprise at least one in voltage, electric current, power.Adopt this preferred version, the display of electrical quantity in trimming process can be made more directly perceived.
The power output that second preferred version controls electromagnetic oven for: control module described in step (three) progressively increases with 20-50W/500MS.Adopt this preferred version, such that trimming process efficiency is higher, to correct result precision higher.
3rd preferred version is: be provided with switch between described electrical parameters detection device and described electromagnetic oven, for disconnecting described electromagnetic oven power supply.
Technical advantage of the present invention is:
1, electromagnetic oven Power Regulation potentiometer or plug-in EEPROM device need not be adopted, reduce circuit board cost, improve reliability and stability.
2, without the need to pressing any button Modulating Power, adjustment power rating, production cost is reduced.
3, guarantee that electromagnetic oven output power is within the scope of the positive and negative 50W of rated value.
Accompanying drawing explanation
Fig. 1 is the embodiment of the present invention 1 electromagnetic oven and calibration equipment connection diagram.
Fig. 2 is the embodiment of the present invention 1 electromagnetic oven internal circuit blocks schematic diagram.
Reference numeral: 1-voltage-stabilized power supply, 2-electrical parameters detection device, 3-switch, 4-electromagnetic oven, 5-detection of power loss module, 6-control module, 7-output module.
Detailed description of the invention
Below in conjunction with specific embodiments and the drawings, the present invention will be further described.
Embodiment 1.
With reference to figure 1,2, a kind of electromagnetic oven, comprise control module 6 and connected detection of power loss module 5 and output module 7, detection of power loss module 5 gathers power-off signal when power down and passes to described control module 6, described control module 6 according to described power-off signal record now controling parameters be specified output parameter, in the normal mode of operation, control module 6 is according to each gear output parameter of specified output parameter determination electromagnetic oven 4, and control module 6 controls the power stage of output module 7 according to gear output parameter.Output module 7 comprises solenoid and drive circuit, fan and drive circuit thereof etc.
Readable and writable memory is established, for storing specified output parameter in control module 6.Operation principle is as follows: on the circuit board of electromagnetic oven 4, be provided with the voltage signal acquisition circuit, the current signal Acquisition Circuit that are connected with control module 6 and control the pulse width modulation circuit of output module 7 power stage, the impulse modulation width signal etc. of the voltage signal collected during the record power down of control module 6 embedded software and current signal and now control module 6 output, writes in readable and writable memory simultaneously.
Specified output parameter comprises at least one in current signal, voltage signal, power signal, impulse modulation width signal.Establish calibration mark register in control module 6, whether receive power-off signal for record controls module 6.Correction bit in this calibration mark register can be one or more, and correction bit is that genuine state can be positive N or negative N, N are integer.
Same chip is located in detection of power loss module 5 and control module 6.The another kind of replacement scheme of this kind of technical scheme is: control module 6 is a microprocessor, and power down module 5 is micro-process peripheral circuit.
Based on an electromagnetic oven bearing calibration for above-mentioned electromagnetic oven, comprise the steps:
(1) voltage-stabilized power supply 1, electrical parameters detection device 2, switch 3 and electromagnetic oven 4 is connected successively; Electrical parameters detection device 2 for measuring current signal on circuit and voltage signal, and can calculate current power output according to the current signal collected and voltage signal; Voltage-stabilized power supply 1 is connected with external communication voltage and exports 220V voltage stabilizing AC power;
(2) close switch 3, starts electrical parameters detection device 2, and start electromagnetic stove 4, electromagnetic stove 4 internal control module 6 exports according to specified output parameter, otherwise enters (three);
(3) power output that control module 6 controls electromagnetic oven 4 progressively increases with 20-50W/500MS, when electrical parameters detection device 2 display parameters are electromagnetic oven 4 nominal parameter, cut-off switch 3, detection of power loss module 5 gathers power-off signal and passes to control module 6, and control module 6 records now controling parameters and is specified output parameter and sets correction bit as just.
Display parameters comprise at least one in voltage, electric current, power.Voltage-stabilized power supply 1 at concrete test environment, the also alternating voltage such as exportable 110V, 180V, 340V.Specified output parameter includes but not limited to current signal, voltage signal, power signal, impulse modulation width signal etc.
Although the present invention is described in detail by above-mentioned embodiment, protection scope of the present invention is not limited to this, and all improvement based on invention thought of the present invention, all in scope.
Claims (10)
1. an electromagnetic oven, the detection of power loss module (5) comprising control module (6) and be connected with described control module (6), it is characterized in that: described detection of power loss module (5) gathers power-off signal when power down and passes to described control module (6), described control module (6) according to described power-off signal record now controling parameters be specified output parameter.
2. electromagnetic oven according to claim 1, is characterized in that: described control module establishes readable and writable memory in (6), for storing described specified output parameter.
3. electromagnetic oven according to claim 1 and 2, is characterized in that: described specified output parameter comprises at least one in current signal, voltage signal, power signal, impulse modulation width signal.
4. electromagnetic oven according to claim 1, is characterized in that: described control module establishes calibration mark register in (6), whether has received described power-off signal for recording described control module (6).
5. electromagnetic oven according to claim 1, is characterized in that: be located at same chip in described detection of power loss module (5) and described control module (6).
6. electromagnetic oven according to claim 1, it is characterized in that: described control module (6) is a microprocessor, described power down module (5) is described micro-process peripheral circuit.
7. an electromagnetic oven bearing calibration, is characterized in that, comprises the following steps:
(1) voltage-stabilized power supply (1), electrical parameters detection device (2) and electromagnetic oven (4) is connected successively;
(2) electrical parameters detection device (2) is started, start electromagnetic stove (4), electromagnetic stove (4) internal control module (6), by reading whether correction bit in internal calibrations flag register is just, is that control module (6) exports according to specified output parameter, otherwise enters (three);
(3) power output of described control module (6) control electromagnetic oven (4) progressively strengthens, when electrical parameters detection device (2) display parameters are electromagnetic oven (4) nominal parameter, disconnect electromagnetic oven (4) power supply, described detection of power loss module (5) gathers power-off signal and also passes to described control module (6), and described control module (6) records now controling parameters and is specified output parameter and sets correction bit as just.
8. electromagnetic oven bearing calibration according to claim 7, is characterized in that: described display parameters comprise at least one in voltage, electric current, power.
9. electromagnetic oven bearing calibration according to claim 7, is characterized in that: the power output that control module (6) described in step (three) controls electromagnetic oven (4) progressively increases with 20-50W/500MS.
10. electromagnetic oven bearing calibration according to claim 7, is characterized in that: be provided with switch (3) between described electrical parameters detection device (2) and described electromagnetic oven (4), for disconnecting described electromagnetic oven (4) power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310302836.2A CN104296191B (en) | 2013-07-18 | 2013-07-18 | Electromagnetic oven and its bearing calibration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310302836.2A CN104296191B (en) | 2013-07-18 | 2013-07-18 | Electromagnetic oven and its bearing calibration |
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| Publication Number | Publication Date |
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| CN104296191A true CN104296191A (en) | 2015-01-21 |
| CN104296191B CN104296191B (en) | 2018-02-09 |
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| CN201310302836.2A Active CN104296191B (en) | 2013-07-18 | 2013-07-18 | Electromagnetic oven and its bearing calibration |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109695899A (en) * | 2017-10-24 | 2019-04-30 | 佛山市顺德区美的电热电器制造有限公司 | Electromagnetic heating cooking utensil and its heating power bearing calibration and device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201611780U (en) * | 2009-12-11 | 2010-10-20 | 深圳拓邦股份有限公司 | Automatic power correcting device and system |
| CN201708965U (en) * | 2010-04-07 | 2011-01-12 | 九阳股份有限公司 | Power calibrating circuit of electromagnetic oven |
| JP2012094458A (en) * | 2010-10-29 | 2012-05-17 | Daihen Corp | Electromagnetic induction heating cooker |
-
2013
- 2013-07-18 CN CN201310302836.2A patent/CN104296191B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201611780U (en) * | 2009-12-11 | 2010-10-20 | 深圳拓邦股份有限公司 | Automatic power correcting device and system |
| CN201708965U (en) * | 2010-04-07 | 2011-01-12 | 九阳股份有限公司 | Power calibrating circuit of electromagnetic oven |
| JP2012094458A (en) * | 2010-10-29 | 2012-05-17 | Daihen Corp | Electromagnetic induction heating cooker |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109695899A (en) * | 2017-10-24 | 2019-04-30 | 佛山市顺德区美的电热电器制造有限公司 | Electromagnetic heating cooking utensil and its heating power bearing calibration and device |
| CN109695899B (en) * | 2017-10-24 | 2020-03-03 | 佛山市顺德区美的电热电器制造有限公司 | Electromagnetic heating cooking utensil and heating power correction method and device thereof |
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| Publication number | Publication date |
|---|---|
| CN104296191B (en) | 2018-02-09 |
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Address after: 250118 999 Mei Li Road, Huaiyin District, Ji'nan, Shandong Patentee after: Joyoung Company Limited Address before: Xinsha Road, Huaiyin District of Ji'nan city of Shandong Province, No. 12 250118 Patentee before: Joyoung Company Limited |
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