CN104456647B - The unloaded detection means of micro-wave oven and the unloaded detection method of micro-wave oven - Google Patents
The unloaded detection means of micro-wave oven and the unloaded detection method of micro-wave oven Download PDFInfo
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- CN104456647B CN104456647B CN201410665685.1A CN201410665685A CN104456647B CN 104456647 B CN104456647 B CN 104456647B CN 201410665685 A CN201410665685 A CN 201410665685A CN 104456647 B CN104456647 B CN 104456647B
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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
- H05B6/64—Heating using microwaves
- H05B6/6432—Aspects relating to testing or detecting leakage in a microwave heating apparatus
Abstract
The invention discloses a kind of unloaded detection means of micro-wave oven, including：Current detection module, for detecting the operating current of magnetron in micro-wave oven；Control module, control module is used to sample the operating current of current detection module detection, and judge fluctuating range of the operating current of sampling in preset time, judge whether fluctuating range is more than default fluctuation threshold, and obtain the number that wave band amplitude is more than default fluctuation threshold, wherein, it is unloaded to judge that micro-wave oven occurs when number is more than preset times threshold value.The device of the embodiment of the present invention not only can decide whether that object is put into micro-wave oven, the object that can also judge to be put into micro-wave oven heats if appropriate for microwave, such as empty bowl and metalware etc., extend the use of microwave ovens life-span, simultaneously, unloaded operation dangerous such as radiation increase to caused by user is reduced, ensures that micro-wave oven is safe to use.The invention also discloses a kind of unloaded detection method of micro-wave oven.
Description
Technical field
The present invention relates to household electrical appliance technical field, the unloaded detection means of more particularly to a kind of micro-wave oven and a kind of microwave
The unloaded detection method of stove.
Background technology
With becoming increasingly popular for micro-wave oven, the demand of its functional diversities is also growing day by day.Micro-wave oven is in the unloaded state
Work will influence the use of microwave ovens life-span, not allow micro-wave oven unloaded operation typically.Correlation technique proposes a kind of micro-wave oven, leads to
Cross and be arranged on the weight detecting module detection of cavity bottom and be placed the weight of thing, and microwave is judged according to the weight for being placed thing
Whether stove is unloaded.So as to prevent the micro-wave oven harm that continuous firing is brought in zero load,
But correlation technique has the drawback that, judge whether micro-wave oven is unloaded by weight detecting module, be only capable of judging
Whether there is object to be placed in cavity, and when be placed with cavity empty bowl and metalware etc. be not suitable for microwave heating object when,
Weight detecting module can not judge, micro-wave oven meeting normal operation, now be not suitable for microwave stove heat due to placing thing, it will cause
, potential safety hazard be present in sparking, the unsafe condition such as temperature rise is too fast.
The content of the invention
It is contemplated that at least solves one of technical problem in correlation technique to a certain extent.
Therefore, it is an object of the present invention to propose a kind of unloaded detection means of micro-wave oven, micro-wave oven can interpolate that
Whether the inside places the object that can be heated, and ensures that micro-wave oven is safe to use.
It is another object of the present invention to the unloaded detection method for proposing a kind of micro-wave oven.
The unloaded detection means for the micro-wave oven that embodiment proposes according to an aspect of the present invention, including：Current detection module, use
In the operating current for detecting magnetron in micro-wave oven；Control module, the control module are used to examine the current detection module
The operating current of survey is sampled, and judges fluctuating range of the operating current of sampling in preset time, described in judgement
Whether fluctuating range is more than default fluctuation threshold, and obtains the number that the wave band amplitude is more than the default fluctuation threshold,
Wherein, it is unloaded to judge that the micro-wave oven occurs when the number is more than preset times threshold value.
The unloaded detection means of the micro-wave oven proposed according to embodiments of the present invention, micro-wave oven is detected by current detection module
The operating current of middle magnetron, the operating current that control module detects to current detection module sample, and when sampling
When the number that fluctuating range of the operating current in preset time is more than default fluctuation threshold is more than preset times threshold value, judge micro-
Zero load occurs for ripple stove, so as to which the device of the embodiment of the present invention not only can decide whether that object is put into micro-wave oven, can also sentence
The disconnected object being put into micro-wave oven heats if appropriate for microwave, such as empty bowl and metalware etc., extends the use of microwave ovens longevity
Life, meanwhile, unloaded operation dangerous such as radiation increase to caused by user is reduced, ensures that micro-wave oven is safe to use.
According to a preferred embodiment of the present invention, the preset time is 10-30ms.
According to a specific embodiment of the invention, the current detection module is detection resistance, the unloaded detection means
Also include：The piezo-resistance in parallel with the detection resistance.
Further, the unloaded detection means of described micro-wave oven also includes：First point in parallel with the detection resistance
Piezoresistance and the second divider resistance, one end of first divider resistance are connected with one end of the detection resistance, and described first
The other end of divider resistance is connected with one end of second divider resistance, the other end and the inspection of second divider resistance
The other end of measuring resistance is connected, wherein, one end ground connection of first divider resistance；In parallel with first divider resistance
One electric capacity；Resistance, one end of the resistance are connected with the other end of first divider resistance, and the other end of the resistance is to adopt
Sample end is connected with the control module；Second electric capacity, one end of second electric capacity are connected with the sampling end, second electricity
The other end ground connection of appearance.Wherein, first electric capacity is electrochemical capacitor, and second electric capacity is ceramic disc capacitor.
According to one embodiment of present invention, the unloaded detection means of described micro-wave oven also includes：Weight detecting module,
For detecting the weight for the object being placed in the micro-wave oven, wherein, in the control module to the current detecting mould
Before the operating current of block detection is sampled, the control module is additionally operable to sample the weight of the weight detecting module detection
Amount, if the weight of weight detecting module detection is less than or equal to preset weight threshold value, described in the control module judgement
Micro-wave oven occurs unloaded.
The unloaded detection method for the micro-wave oven that embodiment proposes according to a further aspect of the invention, comprises the following steps：Pass through
The operating current of magnetron in current detection module detection micro-wave oven；The operating current of current detection module detection is carried out
Sampling, and judge fluctuating range of the operating current of sampling in preset time, judge whether the fluctuating range is more than
Default fluctuation threshold；The number that the wave band amplitude is more than the default fluctuation threshold is obtained, when the number is more than default time
It is unloaded to judge that the micro-wave oven occurs during number threshold value.
The unloaded detection method of the micro-wave oven proposed according to embodiments of the present invention, micro-wave oven is detected by current detection module
The operating current of middle magnetron, the operating current of current detection module detection is sampled, and when the operating current of sampling
When the number that fluctuating range in preset time is more than default fluctuation threshold is more than preset times threshold value, micro-wave oven is judged
Zero load, so as to which the method for the embodiment of the present invention not only can decide whether that object is put into micro-wave oven, can also judge to be put into micro-
Object in ripple stove heats if appropriate for microwave, such as empty bowl and metalware etc., extends the use of microwave ovens life-span, meanwhile,
Unloaded operation dangerous such as radiation increase to caused by user is reduced, ensures that micro-wave oven is safe to use.
According to a preferred embodiment of the present invention, the preset time is 10-30ms.
According to one embodiment of present invention, sampled in the operating current to current detection module detection
Before, the unloaded detection method of described micro-wave oven also includes：The micro-wave oven is placed on by the detection of weight detecting module
The weight of interior object；The weight of the weight detecting module detection is sampled, if the weight of weight detecting module detection
Less than or equal to preset weight threshold value, then it is unloaded to judge that the micro-wave oven occurs.
Brief description of the drawings
Fig. 1 is the block diagram of the unloaded detection means of micro-wave oven according to embodiments of the present invention；
Fig. 2 is the block diagram of the unloaded detection means of micro-wave oven according to an embodiment of the invention；
Fig. 3 is the circuit theory schematic diagram according to the unloaded detection means of the micro-wave oven of a specific embodiment of the invention；
Fig. 4 is the flow chart of the unloaded detection method of micro-wave oven according to embodiments of the present invention；And
Fig. 5 is the flow chart according to the unloaded detection method of the micro-wave oven of a specific embodiment of the invention.
Reference：
Current detection module 100, control module 200, magnetron 10, weight detecting module 300, button detection module 400,
Detection resistance R1, piezo-resistance ZR, the first divider resistance R2, the second divider resistance R3, the first electric capacity C1, resistance R4, the second electricity
Hold C2, the first diode D1, the second diode D2 and driving voltage AC.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.
Below with reference to the accompanying drawings the unloaded detection means of the micro-wave oven of the embodiment of the present invention and the unloaded detection of micro-wave oven are described
Method.
Fig. 1 is the block diagram of the unloaded detection means of micro-wave oven according to embodiments of the present invention.As shown in figure 1, should
The unloaded detection means of micro-wave oven includes：Current detection module 100 and control module 200.
Wherein, current detection module 100 is used for the operating current for detecting magnetron 10 in micro-wave oven；Control module 200 is used
Sampled in the operating current detected to current detection module 100, and judge the operating current of sampling in preset time
Fluctuating range, judges whether fluctuating range is more than default fluctuation threshold, and obtains wave band amplitude and be more than default fluctuation threshold
Number, wherein, it is unloaded to judge that micro-wave oven occurs when number is more than preset times threshold value.
It need to illustrate, control module 200 can obtain the operating current of sampling in preset time by following methods
Interior fluctuating range, i.e., obtain the maximum and minimum value of the operating current of sampling in preset time, and maximum is subtracted
The difference of value is most descended as fluctuating range.Preferably, default fluctuation threshold can be 15, and preset times threshold value can be 20.
Specifically, when the instruction control magnetron 10 that control module 200 inputs according to user starts, control module
200 operating currents detected with the default sampling period to current detection module 100 sample, and judge the operating current of sampling
Fluctuating range in preset time, if the fluctuating range of the operating current of sampling is less than or equal to default fluctuation threshold, control
Molding block 200 controls the normal carry load work of micro-wave oven；If the fluctuating range of the operating current of sampling is more than default fluctuation threshold,
Then the control counter of control module 200 is once counted, i.e. the count value M of counter adds 1, and judges whether count value M is big
In preset times threshold value.If count value M is more than preset times threshold value, it may determine that the object for being now put into micro-wave oven for not
It is adapted to the thing of microwave heating, such as empty bowl and metalware etc., it is unloaded that control module 200 judges that micro-wave oven occurs, and can control
Magnetron 10 processed is closed, and control micro-wave oven is stopped, so as to avoid micro-wave oven from damaging.
Certainly, if count value M is less than preset times threshold value, control module 200 continues to judge the operating current of sampling
Fluctuating range in preset time.
According to other embodiments of the invention, control module 200 is entered in the operating current detected to current detection module 100
After row sampling, the operating current of sampling can be converted to current sampling data, whether judge micro-wave oven further according to current sampling data
Generation is unloaded.
Thus, the unloaded detection means of the micro-wave oven of the embodiment of the present invention, it is micro- not only to have can decide whether that object is put into
Ripple stove, the object that can also judge to be put into micro-wave oven heats if appropriate for microwave, such as empty bowl and metalware etc., extends micro-
The service life of ripple stove, meanwhile, unloaded operation dangerous such as radiation increase to caused by user is reduced, ensures that micro-wave oven uses peace
Entirely.
According to a preferred embodiment of the present invention, preset time can be 10-30ms.It is highly preferred that preset time can be
20ms., wherein it is desired to illustrate, the default sampling period is less than preset time.
According to one embodiment of present invention, as shown in Fig. 2 the unloaded detection means of micro-wave oven also includes：Button detects
Module 400.Wherein, button detection module 400 is used for the instruction for receiving user's input, and in other words, button detection module 400 is used for
The button pressed of detection user, such as after button detection module 400 detects that user presses and starts button, control module 200 is controlled
Magnetron 10 processed starts.
According to one embodiment of present invention, as shown in Fig. 2 the unloaded detection means of micro-wave oven also includes：Weight detecting
Module 300.Wherein, weight detecting module 300 is used for the weight for detecting the object being placed in micro-wave oven, wherein, controlling
Before the operating current that module 200 detects to current detection module samples, control module 200 is additionally operable to sample weight detecting
The weight that module 300 detects, if the weight that weight detecting module 300 detects is less than or equal to preset weight threshold value, control mould
It is unloaded that block 200 judges that micro-wave oven occurs.
Specifically, after micro-wave oven switches on power, control module 200 is first to the weight of the detection of weight detection module 300
Amount is sampled, and the weight of sampling is judged.If the weight that weight detecting module 300 detects is less than or equal to default weight
Threshold value such as 0 is measured, then micro-wave oven is now in Light Condition, and it is unloaded that control module 200 judges that micro-wave oven occurs, and just can not now
Start magnetron 10；If the weight that weight detecting module 300 detects is more than preset weight threshold value, i.e. weight ＞ 0, and weight
The weight that detection module 300 detects is more than default startup weight threshold, then control module 200 can carry out next step operation, i.e. root
Start according to user instruction control magnetron 10, and the operating current detected to current detection module 100 samples, further root
Judge whether micro-wave oven occurs zero load according to the operating current of sampling.
Thus, the unloaded detection means of the micro-wave oven of the embodiment of the present invention, the object being placed on by detection in micro-wave oven
Weight and magnetron 10 operating current, zero load to micro-wave oven carries out double-deck judgement, it is ensured that the zero load of micro-wave oven is accurate
Identification, and protected accordingly.So as to not only can decide whether that object is put into micro-wave oven, can also judge to be put into micro-
Object in ripple stove heats if appropriate for microwave, such as empty bowl and metalware etc., extends the use of microwave ovens life-span, meanwhile,
Unloaded operation dangerous such as radiation increase to caused by user is reduced, ensures that micro-wave oven is safe to use.
According to a specific embodiment of the invention, as shown in figure 3, current detection module 100 is detection resistance R1, zero load inspection
Surveying device also includes：Piezo-resistance ZR.Wherein, piezo-resistance ZR is in parallel with detection resistance R1.
Specifically, detection resistance R1 connects with magnetron 10, and driving power is that magnetron 10 provides driving voltage AC, more
Specifically, the first end of magnetron 10 is connected with one end of driving power, the second end of magnetron 10 and driving power it is another
End is connected, and detection resistance R1 is connected between the second end of magnetron 10 and the other end of driving power.In addition, piezo-resistance ZR
It is connected in parallel on detection resistance R1 both ends.
Thus, the both ends parallel connection piezo-resistance ZR in detection resistance R1, when there is surge current generation, piezo-resistance are passed through
ZR resistance will diminish, and so as to protect detection resistance R1, avoid detection resistance R1 from being burnt out by high current.
Further, the unloaded detection means of micro-wave oven also includes：First divider resistance R2, the second divider resistance R3,
One electric capacity C1, resistance R4 and the second electric capacity C2.
Wherein, the first divider resistance R2 and the second divider resistance R3 are in parallel with detection resistance R1, the first divider resistance R2 and
Second divider resistance R3 is used to carry out partial pressure to the voltage at detection resistance R1 both ends, more specifically, the one of the first divider resistance R2
End is connected with detection resistance R1 one end, and the first divider resistance R2 other end is connected with the second divider resistance R3 one end, the
The two divider resistance R3 other end is connected with the detection resistance R1 other end, wherein, the first divider resistance R2 one end ground connection.
First electric capacity C1 is in parallel with the first divider resistance R2, i.e. the first electric capacity C1 one end and the one of the first divider resistance R2
End is connected, and the first electric capacity C1 other end is connected with the first divider resistance R2 other end；Resistance R4 one end and the first partial pressure
The resistance R2 other end is connected, and the resistance R4 other end is connected for sampling end Ib with control module 200, and resistance R4 is used for current limliting,
To avoid the electric current that sampling end Ib is exported excessive, avoid damaging control module 200；Second electric capacity C2 one end and sampling end Ib phases
Even, the second electric capacity C2 other end ground connection.Wherein, the first electric capacity C1 and the second electric capacity C2 is used to suppress high frequency, that is, says,
The high-frequency current signal that first electric capacity C1 and the second electric capacity C2 can detect detection resistance R1 is converted to low frequency signal, or even connects
It is bordering on direct current signal.
It follows that the voltage at detection resistance R1 both ends passes through the first divider resistance R2 and the second divider resistance R3 partial pressures,
Again after the first electric capacity C1 and the second electric capacity C2 high-frequency suppressing, the high-frequency current signal that detection resistance R1 is detected is converted to
Low frequency signal, afterwards, control module 200 can sample low-frequency current signal from sampling end Ib, and control module 200 samples detection
The operating current of resistance R1 detections.
Wherein, according to a preferred embodiment of the present invention, the first electric capacity C1 can be electrochemical capacitor, and the second electric capacity C2 can be
Ceramic disc capacitor, thus, the negative pole of electrochemical capacitor are connected with the first divider resistance R2 one end, the positive pole of electrochemical capacitor and first point
The piezoresistance R2 other end is connected.
In addition, the first divider resistance R2 resistance can be more than 10 times of the second divider resistance R3 resistance.
Further, as shown in figure 3, the unloaded detection means of micro-wave oven also includes：First diode D1 and the two or two pole
Pipe D2.Wherein, the first diode D1 negative electrode is connected with default power supply such as 5V dc sources, the first diode D1 anode with
The first divider resistance R2 other end is connected, and the second diode D2 is in parallel with the first divider resistance R2, more specifically, the two or two pole
Pipe D2 negative electrode is connected with the first divider resistance R2 other end, and the one of the second diode D2 anode and the first divider resistance R2
End is grounded after being connected.Wherein, the first diode D1 and the second diode D2 is used for the voltage at the first divider resistance R2 both ends is embedding
Position is between 0~5V.
Unloaded detection means based on above-mentioned micro-wave oven, the embodiment of the present invention propose a kind of unloaded detection side of micro-wave oven
Method.
Fig. 4 is the flow chart of the unloaded detection method of micro-wave oven according to embodiments of the present invention.As shown in figure 4, the microwave
The unloaded detection method of stove, comprises the following steps：
S1：The operating current of magnetron in micro-wave oven is detected by current detection module.
Wherein, current detection module can be detection resistance.
S2：The operating current of current detection module detection is sampled, and judges the operating current of sampling when default
Interior fluctuating range, judges whether fluctuating range is more than default fluctuation threshold.
It need to illustrate, fluctuation width of the operating current of sampling in preset time can be obtained by following methods
Degree, i.e., obtain the maximum and minimum value of the operating current of sampling, and maximum is subtracted to the difference for most descending value in preset time
Value is used as fluctuating range.
According to a preferred embodiment of the present invention, preset time can be 10-30ms.It is highly preferred that preset time can be
20ms.Preferably, default fluctuation threshold can be 15.
S3：The number that wave band amplitude is more than default fluctuation threshold is obtained, is judged when number is more than preset times threshold value micro-
Ripple stove occurs unloaded.
Wherein, preset times threshold value can be 20.
Specifically, when instruction (for example, user, which presses, starts button) the control magnetron inputted according to user starts,
The operating current detected first with the default sampling period to current detection module samples, and judges that the operating current of sampling exists
Fluctuating range in preset time, if the fluctuating range of the operating current of sampling is less than or equal to default fluctuation threshold, control
The normal carry load work of micro-wave oven；If the fluctuating range of the operating current of sampling is more than default fluctuation threshold, control counter
Once counted, i.e. the count value M of counter adds 1, and judges whether count value M is more than preset times threshold value.If count
Value M is more than preset times threshold value, then may determine that the object for being now put into micro-wave oven is the thing for being not suitable for microwave heating, such as
Empty bowl and metalware etc., it is unloaded judging that micro-wave oven occurs, magnetron can be controlled to close, control micro-wave oven is stopped, from
And micro-wave oven is avoided to damage.
Certainly, if count value M is less than preset times threshold value, continue to judge the operating current of sampling in preset time
Fluctuating range.
According to other embodiments of the invention, can after being sampled to the operating current that current detection module detects
The operating current of sampling is converted into current sampling data, judges whether micro-wave oven occurs zero load further according to current sampling data.
Thus, the unloaded detection method of the micro-wave oven of the embodiment of the present invention, it is micro- not only to have can decide whether that object is put into
Ripple stove, the object that can also judge to be put into micro-wave oven heats if appropriate for microwave, such as empty bowl and metalware etc., extends micro-
The service life of ripple stove, meanwhile, unloaded operation dangerous such as radiation increase to caused by user is reduced, ensures that micro-wave oven uses peace
Entirely.
According to one embodiment of the invention, before being sampled to the operating current that current detection module detects, this is micro-
The unloaded detection method of ripple stove also includes：The weight of the object in micro-wave oven is placed on by the detection of weight detecting module；Adopt
The weight of sample weight detecting module detection, if the weight of weight detecting module detection is less than or equal to preset weight threshold value, sentence
Disconnected micro-wave oven occurs unloaded.
Specifically, after micro-wave oven switches on power, the weight of weight detection module detection is sampled first, and it is right
The weight of sampling is judged.If the weight of weight detecting module detection is less than or equal to preset weight threshold value such as 0, microwave
Stove is now in Light Condition, and it is unloaded to judge that micro-wave oven occurs, just can not now start magnetron；If weight detecting module is examined
The weight of survey is more than preset weight threshold value, i.e. weight ＞ 0, and the weight of weight detecting module detection is more than default startup weight
Threshold value, then next step operation can be carried out, i.e., control magnetron to start according to user instruction, and to the work of current detection module detection
Sampled as electric current, further judge whether micro-wave oven occurs zero load according to the operating current of sampling.
5 be described in detail the unloaded detection method of the micro-wave oven of the embodiment of the present invention with reference to the accompanying drawings, specifically include with
Lower step：
S101：Micro-wave oven switches on power, and is initialized.
S102：Judge whether the weight of weight detecting module detection is more than preset weight threshold value.If it is, perform step
S103；If it is not, then perform step S110.
S103：Judge to start whether button is pressed, i.e., whether receive the instruction of user's input.If it is, perform
Step S104；If it is not, then terminate.
S104：Magnetron is controlled to start.
S105：Judge whether time interval reaches preset time.If it is, perform step S106；If it is not, then continue
Perform step S105.
S106：The operating current sampled in preset time is converted into current sampling data.
S107：Judge whether fluctuating range of the current sampling data in preset time is more than default fluctuation threshold.If it is,
Then perform step S108；If it is not, then terminate.
S108：The count value M of counter adds 1.
S109：Judge whether count value M is more than preset times threshold value.If it is, perform step S110；If it is not, then
Return to step S105.
S110：Output no-load signal, that is, it is unloaded to judge that micro-wave oven occurs.
S111：Magnetron is controlled to close, control micro-wave oven is stopped.
Thus, the unloaded detection method of the micro-wave oven of the embodiment of the present invention, the object being placed on by detection in micro-wave oven
Weight and magnetron operating current, zero load to micro-wave oven carries out double-deck judgement, it is ensured that the zero load of micro-wave oven is accurately known
Not, and protected accordingly.So as to not only can decide whether that object is put into micro-wave oven, can also judge to be put into microwave
Object in stove heats if appropriate for microwave, such as empty bowl and metalware etc., extends the use of microwave ovens life-span, meanwhile, subtract
The dangerous such as radiation increase to caused by user of few unloaded operation, ensures that micro-wave oven is safe to use.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment or example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.Moreover, specific features, structure, material or the feature of description can be with office
Combined in an appropriate manner in one or more embodiments or example.In addition, in the case of not conflicting, the skill of this area
Art personnel can be tied the different embodiments or example and the feature of different embodiments or example described in this specification
Close and combine.
In addition, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the invention, " multiple " are meant that at least two, such as two, three
It is individual etc., unless otherwise specifically defined.
Any process or method described otherwise above description in flow chart or herein is construed as, and represents to include
Module, fragment or the portion of the code of the executable instruction of one or more the step of being used to realize specific logical function or process
Point, and the scope of the preferred embodiment of the present invention includes other realization, wherein can not press shown or discuss suitable
Sequence, including according to involved function by it is basic simultaneously in the way of or in the opposite order, carry out perform function, this should be of the invention
Embodiment person of ordinary skill in the field understood.
Expression or logic and/or step described otherwise above herein in flow charts, for example, being considered use
In the order list for the executable instruction for realizing logic function, may be embodied in any computer-readable medium, for
Instruction execution system, device or equipment (such as computer based system including the system of processor or other can be held from instruction
The system of row system, device or equipment instruction fetch and execute instruction) use, or combine these instruction execution systems, device or set
It is standby and use.For the purpose of this specification, " computer-readable medium " can any can be included, store, communicate, propagate or pass
Defeated program is for instruction execution system, device or equipment or the dress used with reference to these instruction execution systems, device or equipment
Put.The more specifically example (non-exhaustive list) of computer-readable medium includes following：Electricity with one or more wiring
Connecting portion (electronic installation), portable computer diskette box (magnetic device), random access memory (RAM), read-only storage
(ROM), erasable edit read-only storage (EPROM or flash memory), fiber device, and portable optic disk is read-only deposits
Reservoir (CDROM).In addition, computer-readable medium, which can even is that, to print the paper of described program thereon or other are suitable
Medium, because can then enter edlin, interpretation or if necessary with it for example by carrying out optical scanner to paper or other media
His suitable method is handled electronically to obtain described program, is then stored in computer storage.
It should be appreciated that each several part of the present invention can be realized with hardware, software, firmware or combinations thereof.Above-mentioned
In embodiment, software that multiple steps or method can be performed in memory and by suitable instruction execution system with storage
Or firmware is realized.If, and in another embodiment, can be with well known in the art for example, realized with hardware
Any one of row technology or their combination are realized：With the logic gates for realizing logic function to data-signal
Discrete logic, have suitable combinational logic gate circuit application specific integrated circuit, programmable gate array (PGA), scene
Programmable gate array (FPGA) etc..
Those skilled in the art are appreciated that to realize all or part of step that above-described embodiment method carries
Suddenly it is that by program the hardware of correlation can be instructed to complete, described program can be stored in a kind of computer-readable storage medium
In matter, the program upon execution, including one or a combination set of the step of embodiment of the method.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing module, can also
That unit is individually physically present, can also two or more units be integrated in a module.Above-mentioned integrated mould
Block can both be realized in the form of hardware, can also be realized in the form of software function module.The integrated module is such as
Fruit is realized in the form of software function module and as independent production marketing or in use, can also be stored in a computer
In read/write memory medium.
Storage medium mentioned above can be read-only storage, disk or CD etc..Although have been shown and retouch above
Embodiments of the invention are stated, it is to be understood that above-described embodiment is exemplary, it is impossible to be interpreted as the limit to the present invention
System, one of ordinary skill in the art can be changed to above-described embodiment, change, replace and become within the scope of the invention
Type.
Claims (6)
- A kind of 1. unloaded detection means of micro-wave oven, it is characterised in that including：Current detection module, for detecting the operating current of magnetron in micro-wave oven；AndControl module, the control module is used to sample the operating current of current detection module detection, and judges Fluctuating range of the operating current of sampling in preset time, judges whether the fluctuating range is more than default fluctuation threshold Value, and the number that the fluctuating range is more than the default fluctuation threshold is obtained, wherein, when the number is more than preset times Judge that the micro-wave oven occurs object that is unloaded or being put into the micro-wave oven and is not suitable for microwave heating during threshold value；Wherein, the control module obtains the maximum and minimum value of the operating current of sampling in preset time, and by maximum Value subtracts the difference of minimum value as fluctuating range；Wherein, the unloaded detection means of described micro-wave oven, in addition to：Weight detecting module, for detecting the weight for the object being placed in the micro-wave oven, wherein, in the control module Before the operating current detected to the current detection module samples, the control module is additionally operable to sample the weight inspection The weight of module detection is surveyed, if the weight of weight detecting module detection is less than or equal to preset weight threshold value, the control It is unloaded that molding block judges that the micro-wave oven occurs；Wherein, the current detection module is detection resistance, and the unloaded detection means also includes：The piezo-resistance in parallel with the detection resistance；Wherein, the first end of the magnetron is connected with one end of driving power, the second end and the driving of the magnetron The other end of power supply is connected, the detection resistance be connected to the second end of the magnetron and the driving power the other end it Between.
- 2. the unloaded detection means of micro-wave oven as claimed in claim 1, it is characterised in that the preset time is 10-30ms.
- 3. the unloaded detection means of micro-wave oven as claimed in claim 1, it is characterised in that also include：First divider resistance and second divider resistance in parallel with the detection resistance, one end of first divider resistance with One end of the detection resistance is connected, and the other end of first divider resistance is connected with one end of second divider resistance, The other end of second divider resistance is connected with the other end of the detection resistance, wherein, the one of first divider resistance End ground connection；First electric capacity in parallel with first divider resistance；Resistance, one end of the resistance are connected with the other end of first divider resistance, and the other end of the resistance is sampling End is connected with the control module；Second electric capacity, one end of second electric capacity are connected with the sampling end, the other end ground connection of second electric capacity.
- 4. the unloaded detection means of micro-wave oven as claimed in claim 3, it is characterised in that first electric capacity is electrolysis electricity Hold, second electric capacity is ceramic disc capacitor.
- 5. the unloaded detection method of a kind of micro-wave oven, it is characterised in that comprise the following steps：The operating current of magnetron in micro-wave oven is detected by current detection module；The operating current of current detection module detection is sampled, and judges the operating current of sampling when default Interior fluctuating range, judges whether the fluctuating range is more than default fluctuation threshold；AndThe number that the fluctuating range is more than the default fluctuation threshold is obtained, is sentenced when the number is more than preset times threshold value The disconnected micro-wave oven occurs object that is unloaded or being put into the micro-wave oven and is not suitable for microwave heating；Wherein, the maximum and minimum value of the operating current of sampling are obtained in preset time, and maximum is subtracted into minimum value Difference as fluctuating range；Wherein, before the operating current to current detection module detection samples, in addition to：The weight of the object in the micro-wave oven is placed on by the detection of weight detecting module；The weight of the weight detecting module detection is sampled, if the weight of weight detecting module detection is less than or equal to preset Weight threshold, then it is unloaded to judge that the micro-wave oven occurs；Wherein, the current detection module is detection resistance, and the first end of the magnetron is connected with one end of driving power, institute The second end for stating magnetron is connected with the other end of the driving power, and the detection resistance is connected to the second of the magnetron Between end and the other end of the driving power, the detection resistance is in parallel with piezo-resistance.
- 6. the unloaded detection method of micro-wave oven as claimed in claim 5, it is characterised in that the preset time is 10-30ms.
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| CN106211408B (en) * | 2016-06-30 | 2019-12-31 | 广东美的厨房电器制造有限公司 | Control method of microwave oven and microwave oven |
| CN106455181A (en) * | 2016-10-12 | 2017-02-22 | 郑州机电工程学校 | No-load automatic power off control apparatus for microwave oven, and microwave oven |
| CN108150361B (en) * | 2016-12-05 | 2019-07-23 | 北京金风科创风电设备有限公司 | The monitoring method and device of wind generating set engine room vibration |
| CN107642806A (en) * | 2017-08-31 | 2018-01-30 | 苏州永博电气有限公司 | A kind of method of work of steam humidity-preserving type heater |
| CN108019793B (en) * | 2017-11-30 | 2019-04-19 | 广东美的厨房电器制造有限公司 | Method for controlling microwave oven and micro-wave oven |
| CN110456190B (en) * | 2019-07-24 | 2020-09-15 | 深圳麦格米特电气股份有限公司 | Magnetron state detection method, controller, circuit and system |
| CN113124429B (en) * | 2019-12-31 | 2023-10-31 | 广东美的白色家电技术创新中心有限公司 | Microwave oven and method for detecting load information in microwave oven |
| CN113796714A (en) * | 2020-06-16 | 2021-12-17 | 杭州九阳小家电有限公司 | Vacuum cup and control method thereof |
| CN111830879B (en) * | 2020-07-28 | 2022-02-25 | 广东美的厨房电器制造有限公司 | Control method, microwave cooking appliance and computer readable storage medium |
| CN114001988A (en) * | 2021-10-21 | 2022-02-01 | 深圳市振邦智能科技股份有限公司 | Microwave oven no-load detection method based on wavelet transformation |
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| KR0176821B1 (en) * | 1995-07-24 | 1999-03-20 | 구자홍 | Off load checking method of microwave oven |
| US6166362A (en) * | 1999-01-14 | 2000-12-26 | Samsung Electronics Co., Ltd. | Automatic cooking control method for a microwave oven |
| CN2886385Y (en) * | 2005-10-25 | 2007-04-04 | 乐金电子(天津)电器有限公司 | Protector for loadless operation of rotation disk of microwave oven |
| EP2194759B1 (en) * | 2005-12-26 | 2011-10-05 | Panasonic Corporation | State detector for detecting operating state of radio-frequency heating apparatus |
| CN103743459B (en) * | 2014-01-17 | 2016-01-20 | 广东美的厨房电器制造有限公司 | The weight induction calibration steps of micro-wave oven and weight induction calibrating installation |
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