CN107145106B - A kind of cooking status detection method and device - Google Patents
A kind of cooking status detection method and device Download PDFInfo
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- CN107145106B CN107145106B CN201710385158.9A CN201710385158A CN107145106B CN 107145106 B CN107145106 B CN 107145106B CN 201710385158 A CN201710385158 A CN 201710385158A CN 107145106 B CN107145106 B CN 107145106B
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/26—Pc applications
- G05B2219/2643—Oven, cooking
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Abstract
The invention discloses a kind of cooking status detection methods, comprising: the gas concentration value in acquisition current environment, and record the acquisition time for acquiring the gas concentration value；When the state-detection period arrives, calculate difference value in collected all gas concentration value between every two gas concentration value；It is searched in the pre-set gas concentration table for including at least one set of gas concentration value and cooks the matched one group of gas concentration value of duration, the collected all gas concentration value of institute and one group of gas concentration value are subjected to similar op, obtain the first similarity；When determining that the difference value is less than the corresponding default differential threshold of one group of pre-set gas concentration value and first similarity and is greater than the corresponding similar threshold value of one group of pre-set gas concentration value, cooking status corresponding with one group of pre-set gas concentration value is searched in preset state table, using the cooking status found as current cooking status.The present invention further simultaneously discloses a kind of cooking status detection device.
Description
Technical field
The present invention relates to the technologies more particularly to a kind of cooking status detection method and device of detection cooking status.
Background technique
With science and technology be constantly progressive, the continuous improvement of living standard, requirement of the user to cooking apparatus
It is continuously improved, it is desirable to which cooking apparatus is gradually developed to full-automatic operation from being manually operated, and therefore, user only needs to get food ready
Material, and food materials and condiment are put into cooking utensil, automatic cooking can be realized by setting relevant parameter.
Currently, many cooking apparatus generally need user to monitor the state of food cooking in real time and adjust culinary art parameter, or
Preset the cooking status of a certain culinary art parameter and then real-time monitoring food.And there is closing or semiclosed cooking cavity for certain
Cooking apparatus for, such as: micro-wave oven, oven, electric cooker, when being cooked, component built in cooking apparatus can be with
The food information detected is analyzed and handled, realizes the detection to cooking process.Due to closing or semiclosed cooking cavity
The cooking apparatus of body, user are difficult to observe directly the state of food cooking in cavity, if cooking system detects cooking status
Response time it is too long, the detection efficiency during food cooking is reduced, so as to will affect the success rate of culinary art.
Summary of the invention
For the above technical issues, an embodiment of the present invention is intended to provide a kind of cooking status detection method and device, drops
The response time of low cooking system detection cooking status, improve the detection efficiency during food cooking.
The technical scheme of the present invention is realized as follows:
The embodiment of the invention provides a kind of cooking status detection methods, which comprises
The gas concentration value in current environment is acquired, and records the acquisition time for acquiring the gas concentration value；
When the state-detection period arrives, calculate in the collected all gas concentration value of institute between every two gas concentration value
Difference value；It is searched in the pre-set gas concentration table for including at least one set of gas concentration value and matched one group of duration of culinary art
The collected all gas concentration value of institute and one group of gas concentration value are carried out similar op by gas concentration value, obtain the
One similarity；
Determine that the difference value is less than the corresponding default differential threshold of one group of pre-set gas concentration value and described first
When similarity is greater than one group of pre-set gas concentration value corresponding similar threshold value, searched and described one group in preset state table
The corresponding cooking status of pre-set gas concentration value, using the cooking status found as current cooking status.
It is described that the collected all gas concentration value of institute is similar to one group of gas concentration value progress in above scheme
Operation, comprising: according to preset algorithm calculate between collected all gas concentration value and one group of gas concentration value
Distance value presets corresponding similarity in similar table according to distance value lookup.
In above scheme, the method also includes: determine that the difference value is greater than one group of pre-set gas concentration value pair
When the default differential threshold answered and first similarity are less than one group of pre-set gas concentration value corresponding similar threshold value,
It searches in the pre-set gas concentration table for including at least one set of gas concentration value not being calculated and is most connect with culinary art duration
One group of close gas concentration value, by the collected all gas concentration value of institute fortune similar to one group of gas concentration value progress
It calculates, obtains the second similarity；
Determine that the difference value is less than the corresponding default differential threshold of one group of pre-set gas concentration value and described second
When similarity is greater than one group of pre-set gas concentration value corresponding similar threshold value, searched and described one group in preset state table
The corresponding cooking status of pre-set gas concentration value, using the cooking status found as current cooking status.
In above scheme, it is described calculate difference in collected all gas concentration value between every two gas concentration value
Score value, comprising: calculate the concentration difference of the adjacent gas concentration value acquired twice, and calculate the adjacent gas acquired twice
The corresponding time difference of concentration value；
The concentration difference is divided by the time difference, using quotient calculated as the difference value.
In above scheme, after the cooking status that will be found is as current cooking status, the method is also wrapped
It includes: the cooking status found being converted into display data and exports display.
The embodiment of the invention also provides a kind of cooking status detection device, described device includes:
Acquisition module for acquiring the gas concentration value in current environment, and records and acquires adopting for the gas concentration value
Collect the time；
First computing module when arriving for the state-detection period, calculates every in the collected all gas concentration value of institute
Difference value between two gas concentration values；
First searching module, for searching and cooking in the pre-set gas concentration table for including at least one set of gas concentration value
The matched one group of gas concentration value of duration of preparing food；
Second computing module, for the collected all gas concentration value of institute to be carried out phase with one group of gas concentration value
Like operation, the first similarity is obtained；
Second searching module, for one group of pre-set gas concentration value is corresponding to be preset when the determining difference value is less than
When differential threshold and first similarity are greater than one group of pre-set gas concentration value corresponding similar threshold value, in default shape
Corresponding with one group of pre-set gas concentration value cooking status is searched in state table, using the cooking status found as currently
Cooking status.
In above scheme, second computing module is specifically used for: calculating the collected all gas of institute according to preset algorithm
The distance between bulk concentration value and one group of gas concentration value value are preset corresponding in similar table according to distance value lookup
Similarity.
In above scheme, described device further include: third searching module, for determining that the difference value is greater than described one group
The corresponding default differential threshold of pre-set gas concentration value and first similarity are less than one group of pre-set gas concentration value pair
When the similar threshold value answered, searched in the pre-set gas concentration table for including at least one set of gas concentration value it is not being calculated,
And with culinary art the immediate one group of gas concentration value of duration；
Third computing module, for the collected all gas concentration value of institute to be carried out phase with one group of gas concentration value
Like operation, the second similarity is obtained；
4th searching module, for one group of pre-set gas concentration value is corresponding to be preset when the determining difference value is less than
When differential threshold and second similarity are greater than one group of pre-set gas concentration value corresponding similar threshold value, in default shape
Corresponding with one group of pre-set gas concentration value cooking status is searched in state table, using the cooking status found as currently
Cooking status.
In above scheme, first computing module includes: the first operation submodule, adjacent is acquired twice for calculating
The concentration difference of gas concentration value, and calculate the adjacent corresponding time difference of gas concentration value acquired twice；
Second operation submodule, for the concentration difference divided by the time difference, using quotient calculated as institute
State difference value.
In above scheme, described device further include: conversion module, for when will the cooking status that find as currently
After cooking status, the cooking status found is converted into display data and exports display.
The method and device of detection cooking status provided in an embodiment of the present invention, acquires the gas concentration in current environment
Value, and record the acquisition time for acquiring the gas concentration value；When the state-detection period arrives, the collected all gas of institute are calculated
Difference value in bulk concentration value between every two gas concentration value；Include at least one set of gas concentration value pre-set gas it is dense
It spends in table and searches and cook the matched one group of gas concentration value of duration, by the collected all gas concentration value of institute and described one group
Gas concentration value carries out similar op, obtains the first similarity；Determine that the difference value is less than one group of pre-set gas concentration
It is worth corresponding default differential threshold and first similarity is greater than the corresponding similar threshold value of one group of pre-set gas concentration value
When, cooking status corresponding with one group of pre-set gas concentration value, the culinary art shape that will be found are searched in preset state table
State is as current cooking status.As it can be seen that the embodiment of the present invention can, by acquisition food gas concentration value and acquisition when
Between carry out calculus of differences, and to the gas concentration value fortune similar with the gas concentration value progress under standard state of acquisition food
It calculates, current cooking status is judged by the similarity and difference value calculated, cooked to reduce cooking system detection
The response time for state of preparing food improves the detection efficiency during food cooking.
Scheme explanation
Fig. 1 is a kind of implementation process schematic diagram of cooking status detection method disclosed in the embodiment of the present invention one；
Fig. 2 is a kind of composed structure schematic diagram of cooking status detection device disclosed in the embodiment of the present invention one；
Fig. 3 is a kind of master pattern and the model comparison schematic diagram for acquiring signal；
Fig. 4 is the first-order difference schematic diagram of a kind of detection signal and detection signal；
Fig. 5 is the second differnce schematic diagram of a kind of detection signal and detection signal；
Fig. 6 is a kind of composed structure schematic diagram of cooking status detection device disclosed in the embodiment of the present invention two；
Fig. 7 is a kind of implementation process schematic diagram of cooking status detection method disclosed in the embodiment of the present invention two.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention is made into one below in conjunction with figure
Step ground detailed description, described embodiments are some of the embodiments of the present invention, instead of all the embodiments.Based on the present invention
In embodiment, all other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall within the protection scope of the present invention.
Embodiment one
Fig. 1 is a kind of implementation process schematic diagram of cooking status detection method disclosed in the embodiment of the present invention one, such as Fig. 1 institute
Show, detection method includes the following steps for the cooking status of the present embodiment:
Step 101: cooking status detection device acquires the gas concentration value in current environment, and records the acquisition gas
The acquisition time of concentration value.
Here, the cooking status detection device is applied to the cooking apparatus of micro-wave oven, oven, electric cooker or the like.On
Stating cooking apparatus is only citing, and non exhaustive, including but not limited to above-mentioned cooking apparatus.
Here, the gas is the gas that food distributes during the cooking process, and the food can be potato, rice and meat
Class etc..It is worth noting that, the gas concentration value includes the gas concentration that food comes out and corresponding gas componant.
Specifically, cooking status detection device of user when using cooking apparatus cooking food, applied to cooking apparatus
Start to acquire the gas concentration value that food distributes in cooking apparatus, and records the acquisition time for acquiring the gas concentration value；Or
Person, when reaching default acquisition time, the cooking status detection device applied to cooking apparatus starts to acquire eats in cooking apparatus
The gas concentration value that object distributes, as shown in figure 3, the acquisition signal in figure is all gas of cooking status detection device acquisition
Concentration value, and record the acquisition time for acquiring the gas concentration value, wherein the setting of default acquisition time is cooked according to different
Utensil of preparing food is arranged accordingly, if electric cooker, since in a few minutes of beginning, water does not boil, therefore, this period can be with
Without acquiring gas concentration value, in the embodiment of the present invention, default acquisition time is not particularly limited.
Step 102: when the state-detection period arrives, it is dense to calculate every two gas in the collected all gas concentration value of institute
Difference value between angle value；It is searched in the pre-set gas concentration table for including at least one set of gas concentration value and culinary art duration
The one group of gas concentration value matched, by the collected all gas concentration value of institute fortune similar to one group of gas concentration value progress
It calculates, obtains the first similarity.
Here, the state-detection period is set when product development, can be set as acquisition half a minute, one
Minute or two minutes gas concentration values carry out one-time detection, in the embodiment of the present invention, the state-detection period is not particularly limited.
Specifically, when collecting a certain number of gas concentration values, it is collected that cooking status detection device calculates institute
Difference value in all gas concentration value between every two gas concentration value；It and is including the pre- of at least one set of gas concentration value
If searched in gas concentration table with the culinary art matched one group of gas concentration value of duration, by the collected all gas concentration value of institute with
One group of gas concentration value carries out similar op, obtains the collected all gas concentration value of institute and one group of gas concentration
The first similarity between value.
Further, the collected all gas concentration value of institute and one group of gas concentration value are subjected to similar op,
Compare the corresponding gas componant of the collected gas concentration value of institute gas componant corresponding with one group of gas concentration value, determines
The two gas componant is similar, then carries out described by the collected all gas concentration value of institute and one group of gas concentration value progress
The step of similar op.
It is worth noting that, the culinary art duration matching refers to: during the cooking process, culinary art certain time institute is collected
Gas concentration value is matched with the standard culinary art most similar one group of gas concentration value of duration, for example, standard cooking status has two
Mature, four mature, sixty percent defeated, medium well and completely ripe, every kind of state is corresponding with one group of standard gas concentration value, it is assumed that state
Detection cycle is half a minute, and complete two it is mature need two minutes, complete four maturations and need four minutes, and so on, when complete
Ten minutes are needed when ripe.So, when acquiring one minute gas concentration value, it should be two that it is immediate, which to cook duration, with it
Mature cooking status, at this point, gas concentration value that group of standard gas concentrations corresponding with two maturations that one minute will be acquired
Value carries out similar op；When acquiring the gas concentration value of two points of halfs, it should be twenty percent that it is immediate, which to cook duration, with it
Ripe cooking status, at this point, gas concentration value that group of standard gas concentrations corresponding with two maturations that two points of halfs will be acquired
Value carries out similar op；When acquiring three minutes gas concentration values, with its cook duration it is immediate have it is two mature and four
Mature cooking status, at this point, if when the state of two points of halfs belongs to two maturations, the gas concentration value of acquisition three minutes should be with
Two mature corresponding that group of standard gas concentration values carry out similar op；If the state of two points of halfs is not belonging to two maturations, adopt
Three minutes gas concentration values of collection should carry out similar op with four mature corresponding that group of standard gas concentration values.Namely
It says, judgement carries out similar op with one group of gas concentration value in which stage, in addition to related with culinary art duration, also examines with the last time
The cooking status of survey is related.
Further, the cooking status detection device is by the collected all gas concentration value of institute and one group of gas
Concentration value carries out similar op, comprising: cooking status detection device is dense according to the collected all gas of preset algorithm calculating institute
The distance between angle value and one group of gas concentration value value are preset corresponding similar in similar table according to distance value lookup
Degree.
Further, the cooking status detection device calculates every two gas in the collected all gas concentration value of institute
Difference value between concentration value, comprising: cooking status detection device calculates the concentration difference of the adjacent gas concentration value acquired twice
Value, and calculate the adjacent corresponding time difference of gas concentration value acquired twice；The concentration difference is divided by the time
Difference, using quotient calculated as the difference value.
In embodiments of the present invention, the method for seeking difference value include: assume food have during the cooking process m (m=1,2,
3 ..., M, M are positive integer) cooking status in a stage, the corresponding one group of gas concentration A of each cooking stage and m-th of culinary art
Gas concentration value threshold value A in stagem0And the threshold value of various order differences is Am1、Am2、…、AmN.As an example it is assumed that acquisition has w
A concentration value, respectively x1、x2、…、xi、xi+1、xi+2、…、xw, corresponding acquisition time is t1、t2、…、ti、ti+1、
ti+2、…、tw, then, first-order difference xa=(xi+1-xi)/(ti+1-ti)、xb=(xi+2-xi+1)/(ti+2-ti+1), such as Fig. 4 institute
Show, second differnce xc=(xb-xa)/(ta-tb), as shown in Figure 5, wherein ta=ti+1-ti、tb=ti+2-ti+1, can similarly ask
The difference of other orders.
In embodiments of the present invention, the method for seeking similarity includes: to refer to the food gas concentration value A that detects of needs and pre-
If standard gas concentration value BmDynamic time consolidation (DTW, Dynamic Time Warping) algorithm process is carried out to be returned
The one minimum Cumulative Distance A changedm0.Here, BmIndicate the standard gas concentration value of m cooking stage.
Here, it introduces the basic principle of DTW algorithm: enabling the reference template B of standardm, it is the vector of M dimension, i.e. Bm
={ Bm(1)、Bm(2)、......、Bm(m)、......、Bm(M) }, each component can be a number or one smaller
Vector.It is a N-dimensional vector now with a test template A, i.e. A=A (1), A (2) ..., A (n) ..., A
(N) }, same each component can be a number either smaller vector, notices that M needs not be equal to N, but each divides
The dimension of amount should be identical.
Calculate test template A and standard form BmThe distance between, it is right because the length of 2 templates is different
It answers there are many kinds of matched relationships, needs to find out wherein apart from that shortest coupling path.It is now assumed that meeting following constraint:
When from a grid (i-1, j-1) perhaps (i-1 j) or (i, j-1) arrive next grid (i, j), if it is laterally or
Its distance is d (i, j) if vertical, is then 2d (i, j), constraint condition if it is clinodiagonal are as follows:
Wherein, g (i, j) indicates that 2 templates are all gradually matched from starting component, has arrived the j in i component and T in M
Component, and be all to add d (i, j) or 2d (i, j) in preceding primary matched result, then it is minimized.
Step 103: determine the difference value be less than the corresponding default differential threshold of one group of pre-set gas concentration value and
When first similarity is greater than one group of pre-set gas concentration value corresponding similar threshold value, cooking status detection device is pre-
If searching corresponding with one group of pre-set gas concentration value cooking status in state table, using the cooking status found as working as
Preceding cooking status.
Further, cooking status detection device determines that the difference value is corresponding greater than one group of pre-set gas concentration value
Default differential threshold and first similarity when being less than the corresponding similar threshold value of one group of pre-set gas concentration value,
Include at least one set of gas concentration value pre-set gas concentration table in search it is not being calculated and with culinary art duration it is closest
One group of gas concentration value, the collected all gas concentration value of institute and one group of gas concentration value are subjected to similar op,
Obtain the second similarity；
Determine that the difference value is less than the corresponding default differential threshold of one group of pre-set gas concentration value and described second
When similarity is greater than one group of pre-set gas concentration value corresponding similar threshold value, cooking status detection device is in preset state table
It is middle to search cooking status corresponding with one group of pre-set gas concentration value, using the cooking status found as current culinary art
State.
Further, the cooking status detection device using the cooking status found as current cooking status it
Afterwards, the cooking status found is converted into display data the method also includes: cooking status detection device and exported aobvious
Show.For example, it is assumed that there are five types of the cooking status of standard: two is mature, four mature, sixty percent ripe, medium well and completely ripe, finds
When cooking status is two mature, two mature states are converted into display data, in the display screen display of cooking apparatus.It is worth
It is noted that the cooking status found is two mature, illustrate that current cooking state belonged to for two this mature stage, i.e., it is current
Cooking status may reach two maturations just, it is also possible within two maturations.
For the ease of better implementing the above-mentioned cooking status detection method of the embodiment of the present invention, the present invention also provides with
In the cooking status detection device for realizing the implementation above method.
Fig. 2 is a kind of composed structure schematic diagram of cooking status detection device disclosed in the embodiment of the present invention one, such as Fig. 2 institute
Show, the cooking status detection device of the present embodiment includes:
Acquisition module 201 for acquiring the gas concentration value in current environment, and records the acquisition gas concentration value
Acquisition time；
First computing module 202 when arriving for the state-detection period, calculates in the collected all gas concentration value of institute
Difference value between every two gas concentration value；
First searching module 203, for being searched in the pre-set gas concentration table for including at least one set of gas concentration value
With the culinary art matched one group of gas concentration value of duration；
Second computing module 204, for by the collected all gas concentration value of institute and one group of gas concentration value into
Row similar op obtains the first similarity；
Second searching module 205 determines that the difference value is corresponding less than one group of pre-set gas concentration value for working as
When default differential threshold and first similarity are greater than one group of pre-set gas concentration value corresponding similar threshold value, pre-
If searching corresponding with one group of pre-set gas concentration value cooking status in state table, using the cooking status found as working as
Preceding cooking status.
Specifically, second computing module 204 is specifically used for: calculating the collected all gas of institute according to preset algorithm
The distance between concentration value and one group of gas concentration value value preset corresponding phase in similar table according to distance value lookup
Like degree.
Further, described device further include: third searching module 206, for determining that the difference value is greater than described one
It organizes the corresponding default differential threshold of pre-set gas concentration value and first similarity is less than one group of pre-set gas concentration value
When corresponding similar threshold value, searches in the pre-set gas concentration table for including at least one set of gas concentration value and be not calculated
And with culinary art the immediate one group of gas concentration value of duration；
Third computing module 207, for by the collected all gas concentration value of institute and one group of gas concentration value into
Row similar op obtains the second similarity；
4th searching module 208 determines that the difference value is corresponding less than one group of pre-set gas concentration value for working as
When default differential threshold and second similarity are greater than one group of pre-set gas concentration value corresponding similar threshold value, pre-
If searching corresponding with one group of pre-set gas concentration value cooking status in state table, using the cooking status found as working as
Preceding cooking status.
Further, first computing module 202 includes: the first operation submodule 2021, for calculate it is adjacent twice
The concentration difference of the gas concentration value of acquisition, and calculate the adjacent corresponding time difference of gas concentration value acquired twice；
Second operation submodule 2022 makees quotient calculated for the concentration difference divided by the time difference
For the difference value.
Further, described device further include: conversion module 209, for when using the cooking status found as current
Cooking status after, the cooking status found is converted into display and data and exports display.
The cooking status detection device being made of above-mentioned composed structure schematic diagram, can execute following methods and step:
(1) acquisition module 201 acquires the gas concentration value in current environment, and records and acquire adopting for the gas concentration value
Collect the time.
Here, the cooking status detection device is applied to the cooking apparatus of micro-wave oven, oven, electric cooker or the like.On
Stating cooking apparatus is only citing, and non exhaustive, including but not limited to above-mentioned cooking apparatus.
Here, the gas is the gas that food distributes during the cooking process, and the food can be potato, rice and meat
Class etc..It is worth noting that, the gas concentration value includes the gas concentration that food comes out and corresponding gas componant.
Specifically, when using cooking apparatus cooking food, acquisition module 201 starts to acquire food in cooking apparatus user
The gas concentration value distributed, and record the acquisition time for acquiring the gas concentration value；Alternatively, reaching default acquisition time
When, acquisition module 201 starts to acquire the gas concentration value that food distributes in cooking apparatus, as shown in figure 3, the acquisition signal in figure
The as all gas concentration value of cooking status detection device acquisition, and the acquisition time for acquiring the gas concentration value is recorded,
Wherein, the setting for presetting acquisition time is arranged accordingly according to different cooking apparatus, if electric cooker, due to beginning
In a few minutes, water does not boil, and therefore, this period can not have to acquisition gas concentration value, in the embodiment of the present invention, adopts to default
The collection time is not particularly limited.
(2) when the state-detection period arrives, the first computing module 202 calculates every in the collected all gas concentration value of institute
Difference value between two gas concentration values, the first searching module 203 are including the default gas of at least one set of gas concentration value
It is searched in bulk concentration table and cooks the matched one group of gas concentration value of duration, the second computing module 204 is collected all by institute
Gas concentration value and one group of gas concentration value carry out similar op, obtain the first similarity.
Here, the state-detection period is set when product development, can be set as acquisition half a minute, one
Minute or two minutes gas concentration values carry out one-time detection, in the embodiment of the present invention, the state-detection period is not particularly limited.
Specifically, when collecting a certain number of gas concentration values, the first computing module 202 calculates collected institute, institute
There is the difference value in gas concentration value between every two gas concentration value；First searching module 203 is including at least one set of gas
It is searched in the pre-set gas concentration table of bulk concentration value and the culinary art matched one group of gas concentration value of duration, the second computing module 204
The collected all gas concentration value of institute and one group of gas concentration value are subjected to similar op, it is collected all to obtain institute
The first similarity between gas concentration value and one group of gas concentration value.
Further, the second computing module 204 is by the collected all gas concentration value of institute and one group of gas concentration
Value carries out similar op, and it is corresponding with one group of gas concentration value to compare the corresponding gas componant of the collected gas concentration value of institute
Gas componant, both determine that gas componant is similar, then carries out described by the collected all gas concentration value of institute and described one
The step of group gas concentration value carries out similar op.
It is worth noting that, the culinary art duration matching refers to: during the cooking process, culinary art certain time institute is collected
Gas concentration value is matched with the standard culinary art most similar one group of gas concentration value of duration, for example, standard cooking status has two
Mature, four mature, sixty percent defeated, medium well and completely ripe, every kind of state is corresponding with one group of standard gas concentration value, it is assumed that state
Detection cycle is half a minute, and complete two it is mature need two minutes, complete four maturations and need four minutes, and so on, when complete
Ten minutes are needed when ripe.So, when acquiring one minute gas concentration value, it should be two that it is immediate, which to cook duration, with it
Mature cooking status, at this point, gas concentration value that group of standard gas concentrations corresponding with two maturations that one minute will be acquired
Value carries out similar op；When acquiring the gas concentration value of two points of halfs, it should be twenty percent that it is immediate, which to cook duration, with it
Ripe cooking status, at this point, gas concentration value that group of standard gas concentrations corresponding with two maturations that two points of halfs will be acquired
Value carries out similar op；When acquiring three minutes gas concentration values, with its cook duration it is immediate have it is two mature and four
Mature cooking status, at this point, if when the state of two points of halfs belongs to two maturations, the gas concentration value of acquisition three minutes should be with
Two mature corresponding that group of standard gas concentration values carry out similar op；If the state of two points of halfs is not belonging to two maturations, adopt
Three minutes gas concentration values of collection should carry out similar op with four mature corresponding that group of standard gas concentration values.Namely
It says, judgement carries out similar op with one group of gas concentration value in which stage, in addition to related with culinary art duration, also examines with the last time
The cooking status of survey is related.
Further, second computing module 204 is by the collected all gas concentration value of institute and one group of gas
Concentration value carries out similar op, comprising: the second computing module 204 calculates the collected all gas concentration of institute according to preset algorithm
The distance between value and one group of gas concentration value value are preset corresponding similar in similar table according to distance value lookup
Degree.
Further, first computing module 202 calculates every two gas in the collected all gas concentration value of institute
Difference value between concentration value, comprising: the first operation submodule 2021 calculates the concentration of the adjacent gas concentration value acquired twice
Difference, and calculate the adjacent corresponding time difference of gas concentration value acquired twice；Second operation submodule 2022 is by institute
Concentration difference is stated divided by the time difference, using quotient calculated as the difference value.
In embodiments of the present invention, the method for seeking difference value include: assume food have during the cooking process m (m=1,2,
3 ..., M, M are positive integer) cooking status in a stage, the corresponding one group of gas concentration B of each cooking stage and m-th of culinary art
Gas concentration value threshold value A in stagem0And the threshold value of various order differences is Am1、Am2、…、AmN.As an example it is assumed that acquisition module
201 acquisitions have w concentration value, respectively x1、x2、…、xi、xi+1、xi+2、…、xw, corresponding acquisition time is t1、t2、…、ti、
ti+1、ti+2、…、tw, then, first-order difference xa=(xi+1-xi)/(ti+1-ti)、xb=(xi+2-xi+1)/(ti+2-ti+1), such as scheme
Shown in 4, second differnce xc=(xb-xa)/(ta-tb), as shown in Figure 5, wherein ta=ti+1-ti、tb=ti+2-ti+1, similarly may be used
Seek the difference of other orders.
In embodiments of the present invention, the method for seeking similarity includes: to refer to the food gas concentration value A that detects of needs and pre-
If standard gas concentration value BmDynamic time consolidation (DTW, Dynamic Time Warping) algorithm process is carried out to be returned
The one minimum Cumulative Distance A changedm0.Here, BmIndicate the standard gas concentration value of m cooking stage.
Here, it introduces the basic principle of DTW algorithm: enabling the reference template B of standardm, it is the vector of M dimension, i.e. Bm
={ Bm(1)、Bm(2)、......、Bm(m)、......、Bm(M) }, each component can be a number or one smaller
Vector.It is a N-dimensional vector now with a test template A, i.e. A=A (1), A (2) ..., A (n) ..., A
(N) } same each component can be a number either smaller vector, notices that M needs not be equal to N, but each divides
The dimension of amount should be identical.
Calculate test template A and standard form BmThe distance between, it is right because the length of 2 templates is different
It answers there are many kinds of matched relationships, needs to find out wherein apart from that shortest coupling path.It is now assumed that topic meets as follows
Constraint: when arriving next grid (i, j) from a grid (i-1, j-1) perhaps (i-1 j) or (i, j-1), if it is cross
To or it is vertical if, it is then 2d (i, j), constraint condition if it is clinodiagonal that distance, which is d (i, j), are as follows:
Wherein g (i, j) indicates that 2 templates are all gradually matched from starting component, has arrived the j in i component and T in M
Component, and be all to add d (i, j) or 2d (i, j) in preceding primary matched result, then it is minimized.
(3) determine that the difference value is less than the corresponding default differential threshold of one group of pre-set gas concentration value and described
When first similarity is greater than one group of pre-set gas concentration value corresponding similar threshold value, the second searching module 205 is in default shape
Corresponding with one group of pre-set gas concentration value cooking status is searched in state table, using the cooking status found as currently
Cooking status.
Further, when determine the difference value be greater than the corresponding default difference threshold of one group of pre-set gas concentration value
Value and when first similarity is less than one group of pre-set gas concentration value corresponding similar threshold value, third searching module 206
It searches in the pre-set gas concentration table for including at least one set of gas concentration value not being calculated and is most connect with culinary art duration
One group of close gas concentration value, third computing module 207 are dense by the collected all gas concentration value of institute and one group of gas
Angle value carries out similar op, obtains the second similarity；
Determine that the difference value is less than the corresponding default differential threshold of one group of pre-set gas concentration value and described second
When similarity is greater than one group of pre-set gas concentration value corresponding similar threshold value, the 4th searching module 208 is in preset state table
It is middle to search cooking status corresponding with one group of pre-set gas concentration value, using the cooking status found as current culinary art
State.
Further, after using the cooking status found as current cooking status, the method also includes: conversion
The cooking status found is converted to display data and exports display by module 209.For example, it is assumed that the cooking status of standard has
Five kinds: two are mature, four mature, sixty percent ripe, medium well and completely ripe, when the cooking status found is two mature, conversion module
Two mature states are converted to display data by 209, in the display screen display of cooking apparatus.It is worth noting that, finding
Cooking status be two mature, illustrate that current cooking state belonged to for two this mature stage, i.e., current cooking status may be just
Reach two maturations well, it is also possible within two maturations.
Technical solution through the embodiment of the present invention, it is poor by being carried out to the gas concentration value and acquisition time that acquire food
Partite transport is calculated, and carries out similar op to the gas concentration value under the gas concentration value and standard state of acquisition food, passes through meter
The similarity and difference value calculated judges current cooking status, to reduce the sound of cooking system detection cooking status
Between seasonable, the detection efficiency during food cooking is improved.
In practical application, the acquisition module 201, the first computing module 202 (including the first operation submodule 2021 and
Two operation submodules 2022), the first searching module 203, the second computing module 204, the second searching module 205, third search mould
Block 206, third computing module 207, the 4th searching module 208 and conversion module 209 can be by positioned at the centers of cooking equipment
Manage device (CPU, Central Processing Unit), microprocessor (MPU, Microprocessor Unit), digital signal
Processor (DSP, Digital Signal Processor) or field programmable gate array (FPGA, Field-
Programmable Gate Array) etc. realize.
Embodiment two
Fig. 6 is a kind of composed structure schematic diagram of cooking status detection device disclosed in the embodiment of the present invention two, referring to Fig. 6
Shown, the cooking status detection device of the present embodiment includes: sensor, data acquisition module, data processing module and culinary art control
Molding block；Wherein,
Sensor 601 is electrically connected with data acquisition module 602, for obtaining the gas concentration of food during the cooking process
Value and gas componant.
Data acquisition module 602 is electrically connected with data processing module 603, the detection by data acquisition module to sensor
Value is measured or is read, and forms the detection data A of sensor, is transferred to the detection data of sensor by data acquisition module
Data processing module.
Data processing module 603 is electrically connected with culinary art control module 604, counts for the detection data A to sensor
Work is judged according to processing and cooking status, forms culinary art parameter control signal.
Control module 604 is cooked, for culinary art parameter to be adjusted, current culinary art shape is judged according to culinary art parameter
State.
Here, the sensor 601 includes but is not limited to: gas sensor, temperature sensor and humidity sensor etc.,
In, gas sensor is used to detect the gas concentration that food distributes and corresponding gas componant, including but not limited to: detection gas
The sensor for the detection gas ingredient that sensor, the metal-oxide gas transducer array of concentration form, infra-red sepectrometry inspection
Survey the sensor of gas componant, the sensor etc. of the detection gas ingredient of surface acoustic wave gas sensors array composition.
The cooking status judgement refers to the detection data according to pre-set standard cooking status model and sensor,
Which cooking stage that current foodstuff is in model judged.
The food cooking state model refers to that data content includes standard for the model data of cooking status identification
The detection data B of culinary art condition lower sensorm, the food cooking stage quantity m (m=1,2,3 ..., M) and m cook rank
The detection data threshold value B of sensor in sectionm0And the threshold value of various order differences, i.e. Bm1、,Bm2、…、BmN。
The data processing module includes the data processing algorithm handled sensor detection signal and judges food
The cooking status of cooking status judges algorithm.Wherein, the data processing algorithm refers to A and BmDTW algorithm process is carried out to obtain
To normalized minimum Cumulative Distance Am0With ask single order, second order and N order difference, i.e. A respectively according to detection orderingm1、Am2、…、AmN
Form the data for judging cooking status.
The cooking status judges that algorithm refers to, judges sensor detection data and various order differences Amn(m=1,2,3 ...,
M；N=0,1,2 ..., N) with corresponding threshold value Bmn(m=1,2,3 ..., M；N=0,1,2 ..., N) between size relation, thus
Show whether food is in m cooking stage.
Fig. 7 is a kind of implementation process schematic diagram of cooking status detection method disclosed in the embodiment of the present invention two, referring to Fig. 7
Shown, the cooking status detection method of the present embodiment may comprise steps of:
Step 701: acquisition gas information A.
Sensor 601 acquire gas information, the gas information may include: in gas concentration value and gas componant extremely
Few one kind, data acquisition module 602 are measured or are read to gas information, to form the gas information A that can be handled.
Step 702: obtaining calibrating gas information B.
Step 703: the calibrating gas information B of m-stagem。
Data acquisition module 602 is searched and the matched m-stage of the gas information A from the calibrating gas information B
Calibrating gas information Bm。
Step 704: calculating the first-order difference of gas information A.
Step 705: obtaining first-order difference Am1。
Data processing module 603 calculates the first-order difference of gas information A, to obtain first-order difference Am1, specific method is such as
Under:
Assuming that acquisition has w concentration value, respectively x1、x2、…、xi、xi+1、xi+2、…、xw, corresponding acquisition time is t1、
t2、…、ti、ti+1、ti+2、…、tw, then, first-order difference xa=(xi+1-xi)/(ti+1-ti)、xb=(xi+2-xi+1)/(ti+2-
ti+1), xaAnd xbFor Am1In two of them difference value, Am1It is made of multiple first-order differences.
Step 706: calculating the second differnce of gas information A.
Step 707: obtaining second differnce Am2。
Data processing module 603 calculates the second differnce of gas information A, to obtain second differnce Am2, specific method is such as
Under:
Assuming that acquisition has w concentration value, respectively x1、x2、…、xi、xi+1、xi+2、…、xw, corresponding acquisition time is t1、
t2、…、ti、ti+1、ti+2、…、tw, then, first-order difference xa=(xi+1-xi)/(ti+1-ti)、xb=(xi+2-xi+1)/(ti+2-
ti+1), second differnce xc=(xb-xa)/(ta-tb), wherein ta=ti+1-ti、tb=ti+2-ti+1.Here, xcFor Am2In one
A difference, Am2It is made of multiple second differnces.
Step 708: the calibrating gas information B of acquisition gas information A and m-stage is calculated by DTW algorithmmMinimum
Distance value.
Step 709: obtaining the calibrating gas information B of acquisition gas information A and m-stagemBetween minimum distance value
Am0。
Data processing module 603 calculates the calibrating gas information B of acquisition gas information A and m-stage by DTW algorithmm
Minimum distance value, obtain minimize distance value Am0。
Here, it seeks minimizing distance value concrete methods of realizing and can refer to the minimum distance value side of seeking in step 102
Method repeats no more in the embodiment of the present invention.
Step 710: judging Am0<Bm0、Am1<Bm1And Am2<Bm2It is whether true.
Step 711: if so, then food is in m-stage.
Step 712: if not, then food is not m-stage.
Food cooking state shown in Fig. 7 judges that process judges food current cooking state.Firstly, will test number
According to the normal data B of m-stage under the conditions of A and standard culinary artmCarry out DTW algorithm process, obtain normalized minimum accumulation away from
From Am0；Then first-order difference A is solved respectively according to time seriesm1With second differnce Am2；Again, respectively by Am0、Am1And Am2With Bm0、
Bm1And Bm2It is compared, when three data are respectively less than threshold value, then judges the m rank in food cooking state and master pattern
Section is consistent, and it is inconsistent otherwise to judge that food cooking state is consistent with the m-stage in master pattern.
To use micro-wave oven to cook a potato, smell in the cavity of the smell sensor detection of single output numerical value
Concentration is as output data, for being judged according to single order and second differnce the cooking status of potato, in conjunction with figure, to this hair
It is bright to be further described.
As shown in figure 3, acquiring odorousness value in the cavity that signal is smell sensor output in figure, adopted as data
Collect the sensor detection data A of module output；Figure Plays model is normal data B under the conditions of standard culinary art；It is detected in figure
Signal is the detection data A and the 5th stage criterion data B of cooking status model of sensor5It is calculated by DTW algorithm
Normalize minimum Cumulative Distance A5,0。
Fig. 4 is A5,0The first-order difference A acquired according to time series5,1, Fig. 5 A5,0The second differnce acquired according to time series
A5,2。
Take the normal data threshold value B in the 5th stage of cooking status model5,0It is 0.35, first-order difference threshold value B5,1For-
0.007, second differnce threshold value B5,2It is -0.0001.Then work as A5,0<B5,0, and A1,5<B5,1, and A2,5<B5,2When, it is possible to determine that food
Current cooking state is the 5th stage in cooking status model.
The method carries out the judgement of food cooking state through the invention, carries out with the detection data A not to sensor
When processing condition data judges whether food is cooking status five stage of model, taking threshold value is 0.05, and system delay is by 50
Second reduce to original system postpone 8%, i.e., 4 seconds.
The cooking status detection device being made of above-mentioned composed structure schematic diagram can be executed also and be can be implemented in example one
Cooking status detection method, which is not described herein again.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention.It is all
Made any modifications, equivalent replacements, and improvements etc. within the spirit and scope of the present invention is all contained in protection model of the invention
Within enclosing.
Claims (10)
1. a kind of cooking status detection method, which is characterized in that the described method includes:
The gas concentration value in current environment is acquired, and records the acquisition time for acquiring the gas concentration value；
When the state-detection period arrives, calculate difference in collected all gas concentration value between every two gas concentration value
Score value；It is searched in the pre-set gas concentration table for including at least one set of gas concentration value and the culinary art matched one group of gas of duration
The collected all gas concentration value of institute and one group of gas concentration value are carried out similar op, obtain the first phase by concentration value
Like degree；
Determine that the difference value is less than the corresponding default differential threshold of one group of pre-set gas concentration value and described first similar
When spending similar threshold value corresponding greater than one group of pre-set gas concentration value, searches in preset state table and preset with described one group
The corresponding cooking status of gas concentration value, using the cooking status found as current cooking status；Wherein,
Culinary art duration matching, comprising: during the cooking process, the collected gas concentration value of culinary art certain time institute with it is described
Pre-set gas concentration table Plays cook the most similar one group of gas concentration value matching of duration, and every kind of standard culinary art duration is corresponding
There is one group of standard gas concentration value；
It is described that the collected all gas concentration value of institute and one group of gas concentration value are subjected to similar op, it obtains similar
Degree, comprising:
Compare the corresponding gas componant of the collected gas concentration value of institute gas componant corresponding with one group of gas concentration value,
It is when determining that the two gas componant is similar, the collected all gas concentration value of institute is similar to one group of gas concentration value progress
Operation obtains similarity.
2. the method according to claim 1, wherein it is described by the collected all gas concentration value of institute with it is described
One group of gas concentration value carries out similar op, comprising:
Institute's the distance between collected all gas concentration value and one group of gas concentration value value is calculated according to preset algorithm,
Corresponding similarity in similar table is preset according to distance value lookup.
3. according to the method described in claim 2, it is characterized in that, the method also includes:
Determine that the difference value is greater than the corresponding default differential threshold of one group of pre-set gas concentration value and described first similar
It is including the default of at least one set of gas concentration value when spending similar threshold value corresponding less than one group of pre-set gas concentration value
Searched in gas concentration table it is not being calculated and with culinary art the immediate one group of gas concentration value of duration, by institute it is collected
All gas concentration value and one group of gas concentration value carry out similar op, obtain the second similarity；
Determine that the difference value is less than the corresponding default differential threshold of one group of pre-set gas concentration value and described second similar
When spending similar threshold value corresponding greater than one group of pre-set gas concentration value, searches in preset state table and preset with described one group
The corresponding cooking status of gas concentration value, using the cooking status found as current cooking status.
4. according to the method described in claim 3, it is characterized in that, every in the collected all gas concentration value of calculating institute
Difference value between two gas concentration values, comprising:
The concentration difference of the adjacent gas concentration value acquired twice is calculated, and calculates the adjacent gas concentration value acquired twice
Corresponding time difference；
The concentration difference is divided by the time difference, using quotient calculated as the difference value.
5. method according to any one of claims 1 to 4, which is characterized in that the cooking status that will be found as
After current cooking status, the method also includes:
The cooking status found is converted into display data and exports display.
6. a kind of cooking status detection device, which is characterized in that described device includes:
Acquisition module, for acquiring the gas concentration value in current environment, and when recording the acquisition for acquiring the gas concentration value
Between；
First computing module when arriving for the state-detection period, calculates every two in the collected all gas concentration value of institute
Difference value between gas concentration value；
First searching module, when for being searched in the pre-set gas concentration table for including at least one set of gas concentration value with culinary art
Long matched one group of gas concentration value；
Second computing module is used for the collected all gas concentration value of institute fortune similar to one group of gas concentration value progress
It calculates, obtains the first similarity；
Second searching module, for being less than the corresponding default difference of one group of pre-set gas concentration value when the determining difference value
When threshold value and first similarity are greater than one group of pre-set gas concentration value corresponding similar threshold value, in preset state table
It is middle to search cooking status corresponding with one group of pre-set gas concentration value, using the cooking status found as current culinary art
State；
Wherein, the culinary art duration matching, comprising: during the cooking process, the collected gas concentration value of culinary art certain time institute
It is matched with the pre-set gas concentration table Plays culinary art most similar one group of gas concentration value of duration, every kind of standard cooks duration
It is corresponding with one group of standard gas concentration value；
Second computing module, is specifically used for: comparing the corresponding gas componant of the collected gas concentration value of institute and described one
The corresponding gas componant of group gas concentration value, when determining that the two gas componant is similar, by the collected all gas concentration value of institute
Similar op is carried out with one group of gas concentration value, obtains similarity.
7. device according to claim 6, which is characterized in that second computing module is specifically used for:
Institute's the distance between collected all gas concentration value and one group of gas concentration value value is calculated according to preset algorithm,
Corresponding similarity in similar table is preset according to distance value lookup.
8. device according to claim 7, which is characterized in that described device further include:
Third searching module, for determining that the difference value is greater than the corresponding default difference threshold of one group of pre-set gas concentration value
Value and when first similarity is less than one group of pre-set gas concentration value corresponding similar threshold value, is including at least one
It is searched in the pre-set gas concentration table of group gas concentration value not being calculated and dense with the culinary art immediate one group of gas of duration
Angle value；
Third computing module is used for the collected all gas concentration value of institute fortune similar to one group of gas concentration value progress
It calculates, obtains the second similarity；
4th searching module, for being less than the corresponding default difference of one group of pre-set gas concentration value when the determining difference value
When threshold value and second similarity are greater than one group of pre-set gas concentration value corresponding similar threshold value, in preset state table
It is middle to search cooking status corresponding with one group of pre-set gas concentration value, using the cooking status found as current culinary art
State.
9. device according to claim 8, which is characterized in that first computing module includes:
First operation submodule for calculating the concentration difference of the adjacent gas concentration value acquired twice, and calculates described adjacent
The corresponding time difference of the gas concentration value acquired twice；
Second operation submodule, for the concentration difference divided by the time difference, using quotient calculated as the difference
Score value.
10. according to the described in any item devices of claim 6 to 9, which is characterized in that described device further include:
Conversion module, for when using the cooking status found as the culinary art that after current cooking status, will be found
State is converted to display data and exports display.
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