CN110300462A - Ultra low power IH heating moves pot detection method - Google Patents
Ultra low power IH heating moves pot detection method Download PDFInfo
- Publication number
- CN110300462A CN110300462A CN201910547789.5A CN201910547789A CN110300462A CN 110300462 A CN110300462 A CN 110300462A CN 201910547789 A CN201910547789 A CN 201910547789A CN 110300462 A CN110300462 A CN 110300462A
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- CN
- China
- Prior art keywords
- low power
- cookware
- ultra low
- detection method
- pot detection
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- H05B1/00—Details of electric heating devices
- H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
- H05B1/0202—Switches
-
- 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
- H05B1/00—Details of electric heating devices
- H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
- H05B1/0227—Applications
- H05B1/0252—Domestic applications
- H05B1/0258—For cooking
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Cookers (AREA)
Abstract
It is heated the embodiment of the invention discloses a kind of ultra low power IH and moves pot detection method, comprising: step 1: the preset time before the steamed bun wave duty cycle of each alternating current terminates closes PPG in advance；Step 2: reading comparator according to the LC of detection and shake the energizing signal that loop synchronisation signal is exported；Step 3: the overturning number read being compared with preset times, if being more than preset times, has been removed for cookware, if not exceeded, then cookware is still on coil panel.Detection is walked at the end that the present invention can be realized the cookware in unlimited low continuous low power heating process, without increasing hardware cost, has been ensured the safe operation of IH electromagnetic kitchen range, has been met the demand of people.
Description
Technical field
The present invention relates to IH electromagnetic heating technique fields more particularly to a kind of ultra low power IH heating to move pot detection method.
Background technique
Existing electromagnetic kitchen range under continuous low power heating mode, judge pot have do not remove all be by detection electric current with
The experiment corresponding relationship of PPG width changes to realize.For example the corresponding electric current of actual test 500W is A, when in 500W gear
In practical work process, if detecting current value much smaller than A, then it is assumed that be no pot.
The prior art is typically all to convert after using the very small constantan wire of resistance value to carry out amplifier due to current detecting
For electric current AD value, electric current very little when low-power, along with resistance value is also small, so the AD value read is also small, if therefore power
If too small, the electric current AD value read, close to 0, can not judge whether take the dish out of the pot in the continuous low power course of work with regard to unlimited
The abnormal conditions that end is walked.To ensure the operation of machine safety.Current major part IH electromagnetic kitchen range is minimum can only to accomplish three
More than hundred watts, then it is low just can not judge whether the course of work moves pot, be not able to satisfy the demand of people.
Summary of the invention
The technical problem to be solved by the embodiment of the invention is that providing a kind of ultra low power IH heating shifting pot detection side
Method, so as to be able to detect that the abnormal conditions that the cookware end occurred during working with ultra low power is walked.
In order to solve the above-mentioned technical problem, the embodiment of the present invention proposes a kind of ultra low power IH heating shifting pot detection side
Method, comprising:
Step 1: the preset time before the steamed bun wave duty cycle of each alternating current terminates closes PPG in advance；
Step 2: reading comparator according to the LC of detection and shake the energizing signal that loop synchronisation signal is exported；
Step 3: the overturning number read being compared with preset times, if being more than preset times, has been moved for cookware
It opens, if not exceeded, then cookware is still on coil panel.
Further, the preset time is 1ms.
Having the beneficial effect that for the embodiment of the present invention can be realized the cookware in unlimited low continuous low power heating process
Detection is walked at end, without increasing hardware cost, has been ensured the safe operation of IH electromagnetic kitchen range, has been met the demand of people.
Detailed description of the invention
Fig. 1 is that the ultra low power IH heating of the embodiment of the present invention moves the flow chart of pot detection method.
Fig. 2 is the functional block diagram of the IH heater circuit of the prior art.
Fig. 3 is synchronization waveform figure of the concussion circuit LC of the embodiment of the present invention when having pot.
Fig. 4 is synchronization waveform figure of the LC concussion circuit of the embodiment of the present invention in no pot.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
It mutually combines, invention is further described in detail in the following with reference to the drawings and specific embodiments.
If directional instruction (such as up, down, left, right, before and after ...) is only used for explaining at certain in the embodiment of the present invention
Relative positional relationship, motion conditions etc. under one particular pose (as shown in the picture) between each component, if the particular pose is sent out
When raw change, then directionality instruction also correspondingly changes correspondingly.
If in addition, the description for being related to " first ", " second " etc. in the present invention is used for description purposes only, and should not be understood as
Its relative importance of indication or suggestion or the quantity for implicitly indicating indicated technical characteristic.Define as a result, " first ",
The feature of " second " can explicitly or implicitly include at least one of the features.
Fig. 1 is please referred to, it includes step 1~step 3 that the ultra low power IH heating of the embodiment of the present invention, which moves pot detection method,.
Step 1: the preset time before the steamed bun wave duty cycle of each alternating current terminates closes PPG in advance.
Step 2: reading comparator according to the LC of detection and shake the energizing signal that loop synchronisation signal is exported.LC shakes back
The concussion pulse number on road can export an energizing signal to MCU by internal comparator by synchronization signal detection.
Step 3: the overturning number read being compared with preset times, if being more than preset times, for cookware
Through removing, if not exceeded, then cookware is still on coil panel.
Preferably, preset time 1ms.
The ultra low power IH heating of the embodiment of the present invention is moved pot detection method and can be applied to various be worked with ultra low power
IH electromagnetic kitchen range in.Example: as shown in Fig. 2, Fig. 2 is the principle of a classical IH heater circuit in existing IH electromagnetic kitchen range
Block diagram.The present invention implements 1ms or so before each steamed bun wave duty cycle terminates, and closes PPG in advance, keeps LC concussion circuit remaining
Enough energy holdings are shaken in the loop, therefore, as shown in figure 3, if cookware is absorbed by there is also on coil panel
Energy is shaken, LC concussion several times can be complete energy consumption；As shown in figure 4, energy can only lead to if cookware has been removed
Own loss consumption is crossed, then needing to shake a many periods can just run out of.So by synchronization signal detection, by internal ratio
Compared with device, can export an energizing signal to MCU, MCU can overturn number by reading, and the number read by comparing is not
Together, pot can be determined whether there is.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention are defined by the appended claims and their equivalents.
Claims (2)
1. a kind of ultra low power IH heating moves pot detection method characterized by comprising
Step 1: the preset time before the steamed bun wave duty cycle of each alternating current terminates closes PPG in advance；
Step 2: reading comparator according to the LC of detection and shake the energizing signal that loop synchronisation signal is exported；
Step 3: the overturning number read being compared with preset times, if being more than preset times, has been moved for cookware
It opens, if not exceeded, then cookware is still on coil panel.
2. ultra low power IH as described in claim 1 heating moves pot detection method, which is characterized in that the preset time is
1ms。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910547789.5A CN110300462A (en) | 2019-06-24 | 2019-06-24 | Ultra low power IH heating moves pot detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910547789.5A CN110300462A (en) | 2019-06-24 | 2019-06-24 | Ultra low power IH heating moves pot detection method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110300462A true CN110300462A (en) | 2019-10-01 |
Family
ID=68028583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910547789.5A Pending CN110300462A (en) | 2019-06-24 | 2019-06-24 | Ultra low power IH heating moves pot detection method |
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| Country | Link |
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| CN (1) | CN110300462A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6713730B1 (en) * | 2001-09-14 | 2004-03-30 | Zahra M. Zakerin | Timing system |
| CN106152193A (en) * | 2015-04-08 | 2016-11-23 | 美的集团股份有限公司 | Electromagnetic heating system and pan testing circuit, detection method |
| CN106813269A (en) * | 2015-11-27 | 2017-06-09 | 佛山市顺德区美的电热电器制造有限公司 | A kind of electromagnetic heating apparatus |
| CN107315198A (en) * | 2017-06-19 | 2017-11-03 | 浙江绍兴苏泊尔生活电器有限公司 | induction cooker and cooker detection method |
-
2019
- 2019-06-24 CN CN201910547789.5A patent/CN110300462A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6713730B1 (en) * | 2001-09-14 | 2004-03-30 | Zahra M. Zakerin | Timing system |
| CN106152193A (en) * | 2015-04-08 | 2016-11-23 | 美的集团股份有限公司 | Electromagnetic heating system and pan testing circuit, detection method |
| CN106813269A (en) * | 2015-11-27 | 2017-06-09 | 佛山市顺德区美的电热电器制造有限公司 | A kind of electromagnetic heating apparatus |
| CN107315198A (en) * | 2017-06-19 | 2017-11-03 | 浙江绍兴苏泊尔生活电器有限公司 | induction cooker and cooker detection method |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191001 |