CN109199124A - Temperature sensing device detection method, device and cooking apparatus - Google Patents
Temperature sensing device detection method, device and cooking apparatus Download PDFInfo
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- CN109199124A CN109199124A CN201710540977.6A CN201710540977A CN109199124A CN 109199124 A CN109199124 A CN 109199124A CN 201710540977 A CN201710540977 A CN 201710540977A CN 109199124 A CN109199124 A CN 109199124A
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J36/00—Parts, details or accessories of cooking-vessels
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Abstract
The present invention discloses a kind of temperature sensing device detection method, device and cooking apparatus, and wherein the temperature sensing device detection method includes: to be spaced that the first preset time obtains the voltage value of temperature sensing device and conversion obtains temperature AD value corresponding with temperature；Whether sampled normally according to the current temperature sensing device of consistency checking of the absolute value theoretical voltage change rate absolute value corresponding with temperature sensing device characteristic of the temperature AD value change rate of temperature sensing device, if variation tendency is inconsistent, issues and sample abnormal error information.Technical solution of the present invention improves the reliability and safety of cooking apparatus.
Description
Technical field
The present invention relates to household appliance technical field, in particular to a kind of temperature sensing device detection method, device and cooking apparatus.
Background technique
Present very electron rich cooking apparatus all carries out temperature sampling by temperature sensing device, is cooked by control temperature to control
Transfer in capable and safeguard protection etc..
However there is presently no being monitored for temperature sensing device, these temperature sensing devices can occur in electric appliance use process
Abnormal, if exception has occurred in temperature sensing device sampling, collected data just have exception, thus influence for temperature into
Capable control and defencive function even has safe hidden danger to influence to cook effect when serious.
Summary of the invention
The main object of the present invention is to propose a kind of temperature sensing device detection method, it is intended to detect, mention to temperature sensing device
Rise the reliability and safety of cooking apparatus.
To achieve the above object, a kind of temperature sensing device detection method proposed by the present invention, comprising:
The voltage value and conversion for being spaced the first preset time acquisition temperature sensing device obtain temperature AD value corresponding with temperature；
According to the theoretical voltage variation corresponding with temperature sensing device characteristic of the absolute value of the temperature AD value change rate of temperature sensing device
Whether the current temperature sensing device of the consistency checking of rate absolute value samples normally, if variation tendency is inconsistent, issues the abnormal report of sampling
Wrong information.
Preferably, described " to judge the absolute value and temperature sensing device characteristic pair of the temperature AD value change rate of temperature sensing device sampling
The consistency for the theoretical voltage change rate absolute value answered " includes:
The difference of the temperature AD value of sampling before and after the first preset time of counting period, the theory released according to theoretical characteristics
Voltage difference；
The absolute value of temperature AD value difference value of actual measurement and the absolute value of theoretical calculation difference are divided by, judge ratio whether
In preset range.
Preferably, described " if variation tendency is inconsistent, issuing sampling abnormal alarm information " includes:
The number of ratio not within a preset range is recorded, if the number reaches preset times threshold value, issues the abnormal report of sampling
Wrong information.
Preferably, after step " if variation tendency is inconsistent, issues and sample abnormal error information " further include:
Judge temperature range locating for the temperature value of temperature sensing device；
When temperature is in low-temperature region, it is spaced the second preset time continuous sampling n value, obtains (n-1) a front and back phase
The difference of adjacent sampled value judges that difference whether less than the first preset value, and starts counting, and wherein n is positive integer and n > 1；
When difference less than the number of the first preset value reach (n-1) it is secondary when, start timing, it is default that the cumulative time reaches third
After time, the error information of temperature sensing device exception is issued.
Preferably, after step " if variation tendency is inconsistent, issues and sample abnormal error information " further include:
Judge temperature range locating for the temperature value of temperature sensing device；
Start timing when temperature value is in high-temperature area, judges whether timing duration reaches third preset time；
When timing duration reaches third preset time, the temperature AD value of temperature sensing device in third preset time is obtained
Maxima and minima；Maximum value and minimum value are made the difference, judge difference whether less than the second preset value；
When difference is less than the second preset value, issues and sample abnormal error information.
Preferably, when timing duration is not up to third preset time:
Judge whether the temperature AD value of temperature sensing device is greater than current maximum temperature values；
If so, temperature AD value is set as maximum temperature values；
If it is not, judging whether temperature AD value is less than current minimum temperature value；
If temperature AD value is less than current minimum temperature value, temperature AD value is set as minimum temperature value.
The present invention also proposes a kind of temperature sensing device detection device, comprising:
Sampling module, the first preset time of interval obtain the voltage value of temperature sensing device and are converted to corresponding temperature AD value；
First judgment module, the absolute value according to the temperature AD value change rate of temperature sensing device are corresponding with temperature sensing device characteristic
Whether the current temperature sensing device of consistency checking of theoretical voltage change rate absolute value samples normally；
First reports an error module, if variation tendency is inconsistent, issues and samples abnormal error information.
Preferably, the difference of the AD value of the sampled voltage before and after the first preset time of first judgment module counting period, root
The theoretical voltage difference released according to theoretical characteristics；By the absolute of the absolute value of the temperature AD value difference value of actual measurement and theoretical calculation difference
Within a preset range whether value is divided by, judge ratio.
Preferably, it described first reports an error module record ratio number not within a preset range, if the number reaches default
Frequency threshold value issues sampling abnormal alarm information.
Preferably, the temperature sensing device detection device further include:
Temperature range determination module judges temperature range locating for temperature sensing device sampled value；
Sampled value is compared with preset temperature value, is divided into low-temperature region less than preset temperature value, into low-temperature space
The abnormal determination in domain；
It is divided into high-temperature area greater than preset temperature value, into the abnormal determination of high-temperature area.
Preferably, when Current Temperatures are in low-temperature region, determined into the second judgment module；The temperature sensing device inspection
Survey device further include:
Second judgment module is spaced the second preset time continuous sampling n value, obtains when temperature is in low-temperature region
(n-1) difference of a front and back adjacent sample values judges that difference whether less than the first preset value, and starts counting, and wherein n is positive whole
Number and n > 1；When difference less than the number of the first preset value reach (n-1) it is secondary when, start timing, it is pre- that the cumulative time reaches third
If after the time, issuing the error information of temperature sensing device exception.
Preferably, when Current Temperatures are in high-temperature area, determined into third determination module, the temperature sensing device inspection
Survey device further include:
Timing module starts timing when into third determination module, judges whether timing duration reaches third preset time；
Third judgment module obtains the temperature detector in third preset time when timing duration reaches third preset time
The maxima and minima of the temperature AD value of part；Maximum value and minimum value are made the difference, judge difference whether less than the second preset value；
Third reports an error module, when difference is less than the second preset value, issues and samples abnormal error information.
Preferably, the temperature sensing device detection device further include:
4th judgment module judges that the temperature AD value of temperature sensing device is when timing duration is not up to third preset time
It is no to be greater than current maximum temperature values；
First setup module sets temperature AD value if the temperature AD value of temperature sensing device is greater than current maximum temperature values
For maximum temperature values；If the temperature AD value of temperature sensing device is less than current minimum temperature value, which is set as minimum temperature value.
The present invention also proposes that a kind of cooking apparatus, the cooking apparatus include temperature sensing device detection device as described above.
Technical solution of the present invention samples the operating voltage of temperature sensing device, is being felt by the first preset time of interval
After warm device determines, the corresponding relationship for sampling the voltage value of AD value and temperature sensing device determines that the present invention is obtained according to sampling
AD value change rate absolute value with, whether the corresponding theoretical voltage change rate absolute value of temperature sensing device characteristic unanimously determines temperature-sensitive
Whether device samples normally., under normal circumstances, the change rate of sampling AD and the voltage of theoretical temperature sensing device of temperature sensing device become
Rate is that there are certain corresponding relationships, and the variation tendency of temperature value is identical, thus the absolute value of its change rate is also consistent
, when the variation tendency of the absolute value of the voltage change ratio of the absolute value and theoretical calculation of the sampling change rate of temperature sensing device is different
When cause, illustrate that temperature sensing device sampling is abnormal, then issues the abnormal error information of sampling.Technical solution of the present invention carries out temperature sensing device
Detection, promotes the reliability and safety of cooking apparatus.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
The structure shown according to these attached drawings obtains other attached drawings.
Fig. 1 is the flow chart of one embodiment of temperature sensing device detection method of the present invention；
Fig. 2 is the structural schematic diagram of one embodiment of sample circuit of the present invention；
Fig. 3 is the structural schematic diagram of another embodiment of sample circuit of the present invention；
Fig. 4 is the flow chart of temperature sensing device detection method further embodiment of the present invention；
Fig. 5 is the logic control chart of temperature sensing device detection method of the present invention；
Fig. 6 is the functional block diagram of one embodiment of temperature sensing device detection device of the present invention.
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts it is all its
His embodiment, shall fall within the protection scope of the present invention.
It is to be appreciated that if relating to directionality instruction (such as up, down, left, right, before and after ...) in the embodiment of the present invention,
Then directionality instruction be only used for explain under a certain particular pose (as shown in the picture) between each component relative positional relationship,
Motion conditions etc., if the particular pose changes, directionality instruction is also correspondingly changed correspondingly.
In addition, being somebody's turn to do " first ", " second " etc. if relating to the description of " first ", " second " etc. in the embodiment of the present invention
Description be used for description purposes only, be not understood to indicate or imply its relative importance or implicitly indicate indicated skill
The quantity of art feature." first " is defined as a result, the feature of " second " can explicitly or implicitly include at least one spy
Sign.It in addition, the technical solution between each embodiment can be combined with each other, but must be with those of ordinary skill in the art's energy
It is enough realize based on, will be understood that the knot of this technical solution when conflicting or cannot achieve when occurs in the combination of technical solution
Conjunction is not present, also not the present invention claims protection scope within.
The present invention proposes a kind of temperature sensing device detection method, applied on the electrical equipment for having temperature sensing device.
Referring to Fig.1, in embodiments of the present invention, the temperature sensing device detection method, includes the following steps:
S100, the first preset time of interval obtains the voltage value of temperature sensing device and conversion obtains temperature AD corresponding with temperature
Value；
S200, the absolute value theoretical voltage corresponding with temperature sensing device characteristic according to the temperature AD value change rate of temperature sensing device
Whether the current temperature sensing device of the consistency checking of change rate absolute value samples normally, if variation tendency is inconsistent, it is different to issue sampling
Normal error information.
In the present embodiment, the temperature sensing device is using positive resistive temperature sensing device, such as posive temperature coefficient thermistor.This
Outside, which can also be using reversed resistive temperature sensing device, such as negative tempperature coefficient thermistor.
It is the common sample circuit schematic diagram using resistive temperature sensing device, medium temperature referring to Fig. 2 and Fig. 3, Fig. 2 and Fig. 3
Degree acquisition port is attached to control chip pin, to the data of control chip transmission acquisition.R1 is current-limiting resistance, and R2 is point
Piezoresistance, RT are resistive temperature sensing devices, and C1 is filter capacitor.The temperature acquisition of resistive temperature sensing device is usually to be converted to voltage letter
Number be transferred to control chip or it is to acquire the voltage signal (as shown in Figure 3) of its divider resistance R2 or is acquisition its oneself
The voltage signal (as shown in Figure 4) of body RT.
After the specification for determining resistive temperature sensing device, so that it may determine its temperature characteristics, the i.e. reason of temperature and resistance value
By corresponding relationship, the reason that can obtain temperature and voltage is calculated by the theoretical characteristics of basic circuit diagram relationship and temperature sensing device
It, will be in its recording program by corresponding relationship curve.AD value and temperature are sampled there is also a corresponding relationship, and this corresponding relationship
It should be the identical curve of slope absolute value with the corresponding relationship of temperature and voltage.For example, temperature sensing device resistive for negative sense with
The working time increase, temperature sensing device temperature increase, resistance value reduce, voltage reduce.
For different electric cooking utensils, the heating of normal safety has a temperature range range, such as right
For electromagnetic oven, controlling its operating temperature upper limit by its boiler face temperature sensing device temperature-sensitive is 280 degree, this is usually to consider to boil
The situation of oil, because oil temperature can rise to always very high temperature, and will occur dangerous situation when temperature is more than 300 degree,
And all there was only 100 degree or so after the boiling of normal cooking water etc.During the safe temperature upper limit is heated to from room temperature, temperature detector
The resistance value of part is consecutive variations, and corresponding temperature curve is also consecutive variations.It, will after selected temperature sensing device specification
Determine its temperature curve.It is illustrated with the temperature sensing device of negative sense temperature coefficient, resistance value can be gradually reduced as temperature increases, such as
What fruit was adopted is the partial pressure value of own, then the sampled value curve obtained is also with lapse of temperature.
Technical solution of the present invention samples the operating voltage of temperature sensing device, is being felt by the first preset time of interval
After warm device determines, the corresponding relationship for sampling the voltage value of AD value and temperature sensing device determines that the present invention is obtained according to sampling
AD value change rate absolute value with, whether the corresponding theoretical voltage change rate absolute value of temperature sensing device characteristic unanimously determines temperature-sensitive
Whether device samples normally., under normal circumstances, the change rate of sampling AD and the voltage of theoretical temperature sensing device of temperature sensing device become
Rate is that there are certain corresponding relationships, and the variation tendency of temperature value is identical, thus the absolute value of its change rate is also consistent
, when the variation tendency of the absolute value of the voltage change ratio of the absolute value and theoretical calculation of the sampling change rate of temperature sensing device is different
When cause, illustrate that temperature sensing device sampling is abnormal, then issues the abnormal error information of sampling.Technical solution of the present invention carries out temperature sensing device
Detection, promotes the reliability and safety of cooking apparatus.
Specifically, described " to judge the absolute value and temperature sensing device characteristic pair of the temperature AD value change rate of temperature sensing device sampling
The consistency for the theoretical voltage change rate absolute value answered " includes:
The difference of the temperature AD value of sampling before and after the first preset time of counting period, the theory released according to theoretical characteristics
Voltage difference；
The absolute value of temperature AD value difference value of actual measurement and the absolute value of theoretical calculation difference are divided by, judge ratio whether
In preset range.
Further, described " if variation tendency is inconsistent, issuing sampling abnormal alarm information " includes:
The number of ratio not within a preset range is recorded, if the number reaches preset times threshold value, issues the abnormal report of sampling
Wrong information.
It should be noted that in the present embodiment at interval of the first preset time by the voltage difference sampled around this period with
Time does ratio, while the two voltage values being substituted into known voltage and temperature theory corresponding relationship, the temperature that will be found out
Difference is divided by with voltage difference, the two ratios be under normal circumstances it is approximately equal, when certain one of voltage value for a period of time
The ratio of error of transmission, voltage difference and time will there are biggish differences with the ratio that is found out with theoretical relationship, if accumulative
Persistently there is this mistake to certain number, in this way it is determined that temperature sensing device sampling at this time has exception, then issues report
Alert information to display board reports an error, and stops heating and reuse after reminding user to reset again.In the present embodiment, accumulative number is
Issue warning message 10 times.
The more difficult abnormal conditions determined of resistive temperature sensing device are generally two major classes, and one is adopting for entire temperature sensing device
Sample deviates its practical temperature curve too far, this may be temperature sensing device is caused sampling to go wrong by external interference, so that adopting
The normal operating value set before sample actual value and program it is corresponding not on, can not be according to scheduled so as to cause electric cooking device
Program work is controlled so as to cause failure is cooked；It is another then be that temperature sensing device thoroughly damages, become a certain fixed resistance value without
It varies with temperature and changes again.Such case is then more dangerous, because fixed resistance value may result in mistake and determine quilt
The temperature of gratin especially will appear the dangerous situation that oil temperature can not be managed when boiling oil.Therefore, the present invention further uses following
Technical solution is detected to whether temperature sensing device damages.
Further, after step " if variation tendency is inconsistent, issues and sample abnormal error information " further include:
S300, judge temperature range locating for the temperature value of temperature sensing device；
S400, when temperature is in low-temperature region, be spaced the second preset time continuous sampling n value, acquisition (n-1) it is a before
The difference of adjacent sample values afterwards judges that difference whether less than the first preset value, and starts counting, and wherein n is positive integer and n > 1；
S500, when difference less than the number of the first preset value reach (n-1) it is secondary when, start timing, the cumulative time reaches the
After three preset times, the error information of temperature sensing device exception is issued.
In the present embodiment, the division limits in the area low and high temperature Du great are 200 DEG C (degree Celsius), and the upper limit of high-temperature region is about
280 ° (normal work will limit in temperature upper limit), setting monitoring program is that every 200ms (millisecond) calls once.
It is worth noting that the sampled value for being separated by the unit time differs greatly in low temperature region.Therefore work as initialization temperature
It, can be using just the value of sampling be made the difference with initial value every a bit of time, if difference base when degree is in this interval range
This then illustrates that the temperature sensing device damages there is no variation.
For the reliability and accuracy for further increasing judgement, in the present embodiment by the difference of newest acquisition successively with it is preceding
5 difference comparsions in face, it is normal if difference become larger, after when midway, temperature sensing device is abnormal resistance value just no longer with
Temperature change, if continuously appearance 5 times or more differences determine that temperature sensing device goes out all without significant change and certain time
It is now abnormal.
Further, after step " if variation tendency is inconsistent, issues and sample abnormal error information " further include:
Judge temperature range locating for the temperature value of temperature sensing device；
S600, start timing when temperature value is in high-temperature area, judge whether timing duration reaches third preset time；
S700, when timing duration reaches third preset time, obtain in third preset time temperature sensing device temperature
The maxima and minima of AD value；Maximum value and minimum value are made the difference, judge difference whether less than the second preset value；
S800, when difference is less than the second preset value, issue and sample abnormal error information.
It should be noted that dangerous situation will not occur because cooking water class function temperature will not increase above 100 degree.It cooks
The prepare food entire safe working temperature section of electric appliance has been divided into low, high 2 temperature regions in advance.Each temperature region have it is initial and
Two temperature values terminated divide.Characteristic resistance varying-ratio according to resistive temperature sensing device is as temperature is gradually reduced
's.When temperature sensing device is in high-temperature area, the resistance varying-ratio in this region is relatively low, and temperature rises slowly, in the short time
Apparent difference is not had.Therefore a judgement time, that is, third preset time is set in this region, it will be obtained in this period
The maximum value of temperature sampling and the difference of minimum value are obtained compared with the second preset value, if also smaller than this value, it is assumed that this is felt
The warm device problem.
Further, when timing duration is not up to third preset time:
Judge whether the temperature AD value of temperature sensing device is greater than current maximum temperature values；
If so, temperature AD value is set as maximum temperature values；
If it is not, judging whether temperature AD value is less than current minimum temperature value；
If temperature AD value is less than current minimum temperature value, temperature AD value is set as minimum temperature value.
Here, the maximum value and minimum value of the sampling of temperature sensing device are obtained by detecting, for difference in step S108
Operation, and carry out the abnormal judgement of sampling.
In conclusion the corresponding program execution flow of technical solution of the present invention is as follows referring to Fig. 5:
S1, temperature AD value is obtained every the first preset time T；
S2, determine the corresponding temperature region of temperature adopted value, high-temperature area sets mark F1；
Whether the rate of temperature change of S3, the change rate for determining temperature sampling value and theoretical calculation are close；
S4, if it is not, whether the not similar number of the change rate both judged reaches preset times threshold value, if judgement mark
Whether F1 is equal to 1；
S5, when the not similar number of change rate of the two reaches preset times threshold value, report an error EX；S6 times number is not up to
When, count is incremented, and returns and continue to determine；
S7, judge whether high-temperature area mark F1 is equal to 1；
S8, high-temperature area mark F1 be not equal to 1 when, take 6 groups of temperature values, two adjacent groups temperature value subtracts each other to obtain 5 groups
Difference；
S9, judge whether continuous 5 differences are respectively less than the first preset value；
If it is not, then return value original state, S10, if so, starting timing；
S11, judge whether timing reaches the second preset time value t1 of setting；
If it is not, then return value original state；S12, if so, the EY that reports an error；
S13, high-temperature area mark F1 be equal to 1 when, start timing；
S14, judge whether timing reaches third preset time t 2；
If during S15, timing reach third preset time t 2, obtaining the sampling maximum value sampled in timing time and adopting
Sample minimum value judges to sample maximum value and whether samples the difference of minimum value less than the second preset value b；
If it is not, return value original state, S16, if so, the EX that reports an error；
If S17, timing are not up to third preset time t 2, judge whether the value of sampling is greater than present sample maximum value；
S18, if so, the sampled value is updated to current maximum sampling angle value；S19, if it is not, then judging that the sampled value is
The no minimum value less than present sample；
If S20, sampled value are less than the minimum value of present sample, which is updated to current minimum sampled value；
If S21, sampled value are greater than current minimum sampled value, the original state of detection is returned.Until finding in the second preset time
Interior maximum sampled value and minimum sampled value.
Referring to Fig. 6, it is based on above-mentioned temperature sensing device detection method, the present invention also proposes a kind of temperature sensing device detection device, wraps
It includes:
Sampling module 201, the first preset time of interval obtain the voltage value of temperature sensing device and are converted to corresponding temperature AD
Value；
First judgment module 202, according to the absolute value of the temperature AD value change rate of temperature sensing device and temperature sensing device characteristic pair
Whether the current temperature sensing device of consistency checking for the theoretical voltage change rate absolute value answered samples normally；
First reports an error module 203, if variation tendency is inconsistent, issues and samples abnormal error information.
Specifically, the difference of the AD value of the sampled voltage before and after the first preset time of first judgment module counting period, root
The theoretical voltage difference released according to theoretical characteristics；By the absolute of the absolute value of the temperature AD value difference value of actual measurement and theoretical calculation difference
Within a preset range whether value is divided by, judge ratio.
Further, it described first reports an error module record ratio number not within a preset range, if the number reaches pre-
If frequency threshold value, sampling abnormal alarm information is issued.
Further, the temperature sensing device detection device further include:
Temperature range determination module 204 judges temperature range locating for temperature sensing device sampled value；
Sampled value is compared with preset temperature value, is divided into low-temperature region less than preset temperature value, into low-temperature space
The abnormal determination in domain；
It is divided into high-temperature area greater than preset temperature value, into the abnormal determination of high-temperature area.
Further, when Current Temperatures are in low-temperature region, determined into the second judgment module 205；The temperature-sensitive
Device testing apparatus further include:
Second judgment module 205 is spaced the second preset time continuous sampling n value, obtains when temperature is in low-temperature region
(n-1) a front and back adjacent sample values difference, judge that difference whether less than the first preset value, and starts counting, wherein n is positive
Integer and n > 1；
Second reports an error module 206, when difference less than the number of the first preset value reach (n-1) it is secondary when, start timing；It is accumulative
After time reaches third preset time, the error information of temperature sensing device exception is issued.
Further, when Current Temperatures are in high-temperature area, determined into third determination module, the temperature sensing device
Detection device further include:
Timing module 207 starts timing when into third determination module, judge timing duration whether reach third it is default when
Between；
Third judgment module 208 obtains the temperature-sensitive in third preset time when timing duration reaches third preset time
The maxima and minima of the temperature AD value of device；Maximum value and minimum value are made the difference, judge whether difference is default less than second
Value；
Third reports an error module 209, when difference is less than the second preset value, issues and samples abnormal error information.
Further, the temperature sensing device detection device further include:
4th judgment module 210 judges the temperature AD value of temperature sensing device when timing duration is not up to third preset time
Whether current maximum temperature values are greater than；
First setup module 211, if the temperature AD value of temperature sensing device is greater than current maximum temperature values, by temperature AD value
It is set as maximum temperature values；If the temperature AD value of temperature sensing device is less than current minimum temperature value, which is set as minimum temperature
Value.
Technical solution of the present invention solves two kinds of problem conditions of temperature sensing device appearance simultaneously, and a kind of situation is temperature sensing device
Sampling is inaccurate and its characteristic curve deviation is larger, and this may be to be adopted extremely as caused by environment temperature or electrostatic interference etc.
Sample will affect culinary art effect；A kind of situation is that temperature sensing device itself is damaged or damaged after being disturbed, and causes resistance value no longer with temperature
Change and change, has security risk.In whole work process, two kinds of exceptions are likely to occur, and opportunity occur is also not
Determining, so two kinds of abnormal conditions will carry out real-time monitoring, it could note abnormalities in time and report an error and handle.Skill of the present invention
Art scheme improves the reliability and safety of cooking apparatus.
The present invention also proposes a kind of cooking apparatus, which includes above-mentioned temperature sensing device detection device, the temperature detector
The specific structure of part detection device is referring to above-described embodiment, since this cooking apparatus uses whole skills of above-mentioned all embodiments
Art scheme, therefore at least all beneficial effects brought by the technical solution with above-described embodiment, this is no longer going to repeat them.
The cooking apparatus can be electromagnetic oven, baking machine, electric cooker etc..
The above description is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all at this
Under the inventive concept of invention, using equivalent structure transformation made by description of the invention and accompanying drawing content, or directly/use indirectly
It is included in other related technical areas in scope of patent protection of the invention.
Claims (14)
1. a kind of temperature sensing device detection method characterized by comprising
The voltage value and conversion for being spaced the first preset time acquisition temperature sensing device obtain temperature AD value corresponding with temperature；
Absolute value theoretical voltage change rate corresponding with temperature sensing device characteristic according to the temperature AD value change rate of temperature sensing device is exhausted
Whether the current temperature sensing device of the consistency checking of value is sampled normally, if variation tendency is inconsistent, issues the abnormal letter that reports an error of sampling
Breath.
2. temperature sensing device detection method as described in claim 1, which is characterized in that described " to judge the temperature of temperature sensing device sampling
Spend the consistency of the absolute value theoretical voltage change rate absolute value corresponding with temperature sensing device characteristic of AD value change rate " include:
The difference of the temperature AD value of sampling before and after the first preset time of counting period, the theoretical voltage released according to theoretical characteristics
Difference；
The absolute value of temperature AD value difference value of actual measurement and the absolute value of theoretical calculation difference are divided by, judge ratio whether default
In range.
3. temperature sensing device detection method as claimed in claim 2, which is characterized in that described " if variation tendency is inconsistent, to issue
Sample abnormal alarm information " include:
The number of ratio not within a preset range is recorded, if the number reaches preset times threshold value, issues the abnormal letter that reports an error of sampling
Breath.
4. temperature sensing device detection method as described in claim 1, which is characterized in that " if variation tendency is inconsistent, sent out in step
Abnormal error information is sampled out " after further include:
Judge temperature range locating for the temperature value of temperature sensing device；
When temperature is in low-temperature region, it is spaced the second preset time continuous sampling n value, a front and back (n-1) is adjacent adopts for acquisition
The difference of sample value judges that difference whether less than the first preset value, and starts counting, and wherein n is positive integer and n > 1；
When difference less than the number of the first preset value reach (n-1) it is secondary when, start timing, the cumulative time reaches third preset time
Afterwards, the error information of temperature sensing device exception is issued.
5. temperature sensing device detection method as described in claim 1, which is characterized in that " if variation tendency is inconsistent, sent out in step
Abnormal error information is sampled out " after further include:
Judge temperature range locating for the temperature value of temperature sensing device；
Start timing when temperature value is in high-temperature area, judges whether timing duration reaches third preset time；
When timing duration reaches third preset time, the maximum of the temperature AD value of temperature sensing device in third preset time is obtained
Value and minimum value；Maximum value and minimum value are made the difference, judge difference whether less than the second preset value；
When difference is less than the second preset value, issues and sample abnormal error information.
6. temperature sensing device detection method as claimed in claim 5, which is characterized in that when timing duration is not up to third and presets
Between when:
Judge whether the temperature AD value of temperature sensing device is greater than current maximum temperature values；
If so, temperature AD value is set as maximum temperature values；
If it is not, judging whether temperature AD value is less than current minimum temperature value；
If temperature AD value is less than current minimum temperature value, temperature AD value is set as minimum temperature value.
7. a kind of temperature sensing device detection device characterized by comprising
Sampling module, the first preset time of interval obtain the voltage value of temperature sensing device and are converted to corresponding temperature AD value；
First judgment module, according to the absolute value theory corresponding with temperature sensing device characteristic of the temperature AD value change rate of temperature sensing device
Whether the current temperature sensing device of the consistency checking of voltage change ratio absolute value samples normally；
First reports an error module, if variation tendency is inconsistent, issues and samples abnormal error information.
8. temperature sensing device detection device as claimed in claim 7, which is characterized in that the first judgment module counting period first is pre-
If the difference of the AD value of the sampled voltage before and after the time, according to the theoretical voltage difference of theoretical characteristics release；By the temperature of actual measurement
Within a preset range whether the absolute value of AD value difference value and the absolute value of theoretical calculation difference are divided by, judge ratio.
9. temperature sensing device detection device as claimed in claim 8, which is characterized in that described first reports an error module record ratio not
Number within a preset range issues sampling abnormal alarm information if the number reaches preset times threshold value.
10. temperature sensing device detection device as claimed in claim 7, speciality are, the temperature sensing device detection device is also wrapped
It includes:
Temperature range determination module judges temperature range locating for temperature sensing device sampled value；
Sampled value is compared with preset temperature value, is divided into low-temperature region less than preset temperature value, into low-temperature region
Abnormal determination；
It is divided into high-temperature area greater than preset temperature value, into the abnormal determination of high-temperature area.
11. temperature sensing device detection device as claimed in claim 10, which is characterized in that when Current Temperatures are in low-temperature region,
Determined into the second judgment module；The temperature sensing device detection device further include:
Second judgment module is spaced the second preset time continuous sampling n value, obtains (n-1) when temperature is in low-temperature region
The difference of a front and back adjacent sample values judges that difference whether less than the first preset value, and starts counting, and wherein n is positive integer and n
> 1；When difference less than the number of the first preset value reach (n-1) it is secondary when, start timing, the cumulative time reaches third preset time
Afterwards, the error information of temperature sensing device exception is issued.
12. temperature sensing device detection device as claimed in claim 7, which is characterized in that when Current Temperatures are in high-temperature area, into
Enter third determination module to be determined, the temperature sensing device detection device further include:
Timing module starts timing when into third determination module, judges whether timing duration reaches third preset time；
Third judgment module obtains the temperature sensing device in third preset time when timing duration reaches third preset time
The maxima and minima of temperature AD value；Maximum value and minimum value are made the difference, judge difference whether less than the second preset value；
Third reports an error module, when difference is less than the second preset value, issues and samples abnormal error information.
13. temperature sensing device detection device as claimed in claim 12, which is characterized in that the temperature sensing device detection device is also wrapped
It includes:
4th judgment module judges whether the temperature AD value of temperature sensing device is big when timing duration is not up to third preset time
In current maximum temperature values；
Temperature AD value is set as most by the first setup module if the temperature AD value of temperature sensing device is greater than current maximum temperature values
Big temperature value；If the temperature AD value of temperature sensing device is less than current minimum temperature value, which is set as minimum temperature value.
14. a kind of cooking apparatus, which is characterized in that the cooking apparatus includes the sense as described in claim 7-13 any one
Warm device testing apparatus.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111839209A (en) * | 2020-07-16 | 2020-10-30 | 珠海格力电器股份有限公司 | Display temperature control method, device, equipment and readable storage medium |
| CN112213965A (en) * | 2019-07-10 | 2021-01-12 | 佛山市顺德区美的电热电器制造有限公司 | Port detection device and method and cooking appliance |
| CN112611465A (en) * | 2021-03-03 | 2021-04-06 | 苏州华芯微电子股份有限公司 | Target infrared induction determination method and device and electronic equipment |
| CN112629709A (en) * | 2020-12-21 | 2021-04-09 | 广东高标电子科技有限公司 | Temperature sensor fault detection method and device and electric vehicle controller |
| CN114190756A (en) * | 2020-09-17 | 2022-03-18 | 浙江苏泊尔家电制造有限公司 | Method for detecting assembly position of temperature detection device of cooking appliance and cooking appliance |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0465698A (en) * | 1990-07-06 | 1992-03-02 | Zexel Corp | Fault diagnostic device for sensor |
| JPH10159639A (en) * | 1996-11-27 | 1998-06-16 | Toyota Motor Corp | Detecting method for abnormality of temperature sensor |
| CN101201273A (en) * | 2006-12-11 | 2008-06-18 | 大隈株式会社 | Method for detecting abnormality of temperature sensor in machine tool |
| CN101216356A (en) * | 2007-01-04 | 2008-07-09 | 海尔集团公司 | Temperature sensor failure testing method and apparatus |
| CN101517385A (en) * | 2006-09-22 | 2009-08-26 | 日产柴油机车工业株式会社 | Device and method for detecting abnormality of exhaust gas temperature sensor |
| CN102735365A (en) * | 2012-06-25 | 2012-10-17 | 美的集团有限公司 | Ambient temperature detection device and fault judgment method thereof |
| CN105067150A (en) * | 2015-07-22 | 2015-11-18 | 株洲南车时代电气股份有限公司 | Motor car axle box temperature detection system and method |
| CN105425775A (en) * | 2015-12-04 | 2016-03-23 | 河南中烟工业有限责任公司许昌卷烟厂 | Sensor fault automatic judgment method and system |
| CN105698970A (en) * | 2016-01-29 | 2016-06-22 | 安徽江淮汽车股份有限公司 | Battery pack temperature detection circuit fault diagnosis method |
| CN106197758A (en) * | 2016-06-29 | 2016-12-07 | 广东美的厨房电器制造有限公司 | The fault detection method of temperature sensing circuit and device |
| CN106289578A (en) * | 2016-07-22 | 2017-01-04 | 蚌埠大洋传感***工程有限公司 | A kind of temperature sensor intelligent checking system |
-
2017
- 2017-07-03 CN CN201710540977.6A patent/CN109199124B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0465698A (en) * | 1990-07-06 | 1992-03-02 | Zexel Corp | Fault diagnostic device for sensor |
| JPH10159639A (en) * | 1996-11-27 | 1998-06-16 | Toyota Motor Corp | Detecting method for abnormality of temperature sensor |
| CN101517385A (en) * | 2006-09-22 | 2009-08-26 | 日产柴油机车工业株式会社 | Device and method for detecting abnormality of exhaust gas temperature sensor |
| CN101201273A (en) * | 2006-12-11 | 2008-06-18 | 大隈株式会社 | Method for detecting abnormality of temperature sensor in machine tool |
| CN101216356A (en) * | 2007-01-04 | 2008-07-09 | 海尔集团公司 | Temperature sensor failure testing method and apparatus |
| CN102735365A (en) * | 2012-06-25 | 2012-10-17 | 美的集团有限公司 | Ambient temperature detection device and fault judgment method thereof |
| CN105067150A (en) * | 2015-07-22 | 2015-11-18 | 株洲南车时代电气股份有限公司 | Motor car axle box temperature detection system and method |
| CN105425775A (en) * | 2015-12-04 | 2016-03-23 | 河南中烟工业有限责任公司许昌卷烟厂 | Sensor fault automatic judgment method and system |
| CN105698970A (en) * | 2016-01-29 | 2016-06-22 | 安徽江淮汽车股份有限公司 | Battery pack temperature detection circuit fault diagnosis method |
| CN106197758A (en) * | 2016-06-29 | 2016-12-07 | 广东美的厨房电器制造有限公司 | The fault detection method of temperature sensing circuit and device |
| CN106289578A (en) * | 2016-07-22 | 2017-01-04 | 蚌埠大洋传感***工程有限公司 | A kind of temperature sensor intelligent checking system |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112213965A (en) * | 2019-07-10 | 2021-01-12 | 佛山市顺德区美的电热电器制造有限公司 | Port detection device and method and cooking appliance |
| CN111839209A (en) * | 2020-07-16 | 2020-10-30 | 珠海格力电器股份有限公司 | Display temperature control method, device, equipment and readable storage medium |
| CN114190756A (en) * | 2020-09-17 | 2022-03-18 | 浙江苏泊尔家电制造有限公司 | Method for detecting assembly position of temperature detection device of cooking appliance and cooking appliance |
| CN114190756B (en) * | 2020-09-17 | 2022-09-30 | 浙江苏泊尔家电制造有限公司 | Method for detecting assembly position of temperature detection device of cooking appliance and cooking appliance |
| CN112629709A (en) * | 2020-12-21 | 2021-04-09 | 广东高标电子科技有限公司 | Temperature sensor fault detection method and device and electric vehicle controller |
| CN112629709B (en) * | 2020-12-21 | 2023-10-20 | 广东高标电子科技有限公司 | Temperature sensor fault detection method, detection device and electric vehicle controller |
| CN112611465A (en) * | 2021-03-03 | 2021-04-06 | 苏州华芯微电子股份有限公司 | Target infrared induction determination method and device and electronic equipment |
| CN112611465B (en) * | 2021-03-03 | 2021-06-01 | 苏州华芯微电子股份有限公司 | Target infrared induction determination method and device and electronic equipment |
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