CN109447938A - A kind of detection method and detection device of oven baking performance - Google Patents
A kind of detection method and detection device of oven baking performance Download PDFInfo
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- CN109447938A CN109447938A CN201710775964.7A CN201710775964A CN109447938A CN 109447938 A CN109447938 A CN 109447938A CN 201710775964 A CN201710775964 A CN 201710775964A CN 109447938 A CN109447938 A CN 109447938A
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- 238000001514 detection method Methods 0.000 title claims abstract description 33
- 235000013305 food Nutrition 0.000 claims abstract description 110
- 238000012360 testing method Methods 0.000 claims description 12
- 238000004891 communication Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 241001269238 Data Species 0.000 claims description 4
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical group C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 4
- 238000011156 evaluation Methods 0.000 abstract description 11
- 239000000284 extract Substances 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000013475 authorization Methods 0.000 description 1
- 235000008429 bread Nutrition 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 235000002864 food coloring agent Nutrition 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010606 normalization Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/0002—Inspection of images, e.g. flaw detection
- G06T7/0004—Industrial image inspection
- G06T7/001—Industrial image inspection using an image reference approach
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/90—Determination of colour characteristics
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/10—Image acquisition modality
- G06T2207/10004—Still image; Photographic image
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/10—Image acquisition modality
- G06T2207/10024—Color image
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/30—Subject of image; Context of image processing
- G06T2207/30108—Industrial image inspection
- G06T2207/30128—Food products
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Abstract
The present invention relates to a kind of detection methods of oven baking performance, are taken pictures to the food that oven bakes and save as image to be checked；Image to be checked is converted into RGB data to form RGB data library to be checked；The RGB data of food image part in RGB data library is extracted, to form objective body RGB data library；Judge whether the difference between food image RGB data exceeds threshold value, and then judges the baking uniformity of food；Judge whether the difference between food image RGB data and standard array exceeds threshold value, judges the baking stability of food；The baking uniformity and stability of food are all satisfied requirement, then judge that the baking performance of oven is met the requirements, and otherwise judge that the baking performance of oven is unsatisfactory for requiring.The detection method of oven baking performance provides reliable basis by the baking performance evaluation that the food baked to steam box directly carries out being detected as oven, so that more direct, accurate to the evaluation of oven baking performance.
Description
Technical field
The present invention relates to a kind of detection methods of oven baking performance, and the invention further relates to a kind of inspections of oven baking performance
Survey device.
Background technique
With the generally use of oven, people propose increasingly higher demands to the service performance of oven, as oven is roasting
The stability of system and the uniformity of baking food all directly affect selection and evaluation of the user to oven.Existing oven due to
Thermal field uniformity is poor, and the food that oven bakes then has that color difference is larger, or even food maturity occurs and differ greatly
The case where.Do not occur the standard evaluated oven working performance in the prior art, there are no from realize to oven performance into
Row distinctive mark, user is only capable of checking the various operational datas of oven when choosing, but simultaneously can not directly know that oven makes
With the quality of performance.
Authorization Notice No. is the Chinese utility model patent of CN205053857U (application No. is CN201520846047.X)
" a kind of electric oven " measures electricity by temperature-sensitive system wherein disclosing electric oven includes temperature-sensitive system, comparison system, heating system
The actual temperature of oven, and then the actual temperature of electric oven is compared with the set temperature of user by comparing system, into
And the temperature of electric oven thermal field is realized and is corrected, thermal field uniformity inside electric oven is kept, the performance of electric oven is improved.But this
It layouts and is detected often through point Wen Yi in kind of oven, be then temperature according to each position of layouting to the judgement of thermal field uniformity
For degree come what is judged, position of layouting, density influence its judgement to thermal field uniformity.Although the program can improve to a certain degree
Thermal field uniformity, but the quality of food is baked still without determining assurance to the oven.It can be seen that being baked performance to oven
Evaluation, can not be realized only by the control to workpiece running parameter in electric oven, and need to be baked out with oven
Ultimate criterion of the quality of food as evaluation.
Summary of the invention
The technical problem to be solved by the present invention is to for the above-mentioned prior art provide it is a kind of can be to the food that oven is baked out
The quality of object is detected, and then the detection method of performance is baked for the oven that the baking performance evaluation of oven provides reliable basis
And detection device.
The present invention solves the above problems used technical solution are as follows: a kind of detection method of oven baking performance, it is special
Sign be the following steps are included:
Step 1 takes pictures to oven according to the food that setting nominal bakes and saves as image to be checked；
Image to be checked is converted to RGB data to form RGB data library to be checked by step 2；
Step 3, the RGB data for extracting food image part in RGB data library, to form objective body RGB data library；
Step 4 handles the RGB data in objective body RGB data library, judges the difference between food image RGB data
It is different whether to exceed threshold value, if it was exceeded, judging that the baking uniformity of food is unsatisfactory for requiring；If judging food without departing from if
Baking uniformity meet the requirements, and then carry out step 5；
Step 5 judges whether the difference between food image RGB data and standard array exceeds threshold value, if it was exceeded, sentencing
The baking stability of jejunitas object is unsatisfactory for requiring；If without departing from judging that the baking stability of food is met the requirements；
The baking uniformity and stability of food are all satisfied requirement, then judge that the baking performance of oven is met the requirements, otherwise
Judge that the baking performance of oven is unsatisfactory for requiring.
As an improvement, the treatment process of the step 4 are as follows:
Step 4.1, the rgb value range intervals according to setting, the RGB data calculated in objective body RGB data library drop into
The percentage of data volume in each rgb value range intervals is calculated as objective body and determines array [a1%, a2%, a3% ..., aN%], N
For natural number；
Step 4.2 obtains objective body judgement array [a1%, a2%, a3% ..., aN%] in maximum value ai% is corresponding
Rgb value range intervals, to all rgb values carry out average computation to obtain in the rgb value range intervals in objective body RGB data library
Take average rgb valueCalculate objective body RGB data library in all RGB datas withMeansquaredeviationσ, if σ be greater than setting it is equal
Variance threshold values then judge that the baking uniformity of food is unsatisfactory for requiring；If σ is less than or equal to the mean deviation threshold of setting, sentence
The baking uniformity of jejunitas object meets the requirements
As an improvement, the treatment process of the step 5 are as follows: correspond to each rgb value range intervals, determine array to objective body
[a1%, a2%, a3% ..., aN%] and standard array [A1%, A2%, A3% ..., AM%] difference operation is carried out, and then obtain
Take the absolute difference array [B in each rgb value range intervals1,B2,B3,……,BK], M, K are natural number, and difference is absolute
It is worth array [B1,B2,B3,……,BK] in each data respectively with the difference threshold array [C of setting1,C2,C3,……,CL] in it is right
The corresponding difference threshold of rgb value range intervals is answered to be compared, L is natural number, if absolute difference array [B1,B2,
B3,……,BK] in there is an absolute difference to be greater than the corresponding difference threshold of corresponding rgb value range intervals, then judge food
Baking stability is unsatisfactory for requiring, if absolute value array [B1,B2,B3,……,BK] described in absolute value data be respectively less than
The corresponding difference threshold of rgb value range intervals is corresponded to, then determines that the baking stability of food is met the requirements.
It for the baking performance of more accurate evaluation oven, takes pictures to each surface of the food baked, and to roasting
Each surface of food carries out the judgement of baking uniformity and stability out, if baking each surface of food meets baking
The requirement of even property then judges that the baking uniformity of food is met the requirements, if the stability satisfaction for baking each surface of food is wanted
It asks, then judges that the baking stability of food is met the requirements.
More accurately, it bakes food using different temperatures to oven respectively to detect, if the food that each temperature bakes
Baking uniformity and stability it is qualified, then judge that the baking performance of oven is met the requirements, if there is at least one food is roasting
Uniformity or stability processed are not qualified, judge that the baking performance of oven is unsatisfactory for requiring.
More accurately, oven is detected using at least two foods that same temperature bakes respectively, if each food
Baking uniformity and stability it is qualified, then judge that the baking performance of oven is met the requirements, if at least one food baking
Uniformity or stability are not qualified, judge that the baking performance of oven is unsatisfactory for requiring.
Different food is tested for convenience, in step 1, using the whole secondary content of the picture of shooting as to be checked
Image, or the partial region of the picture shot is chosen as image to be checked.
A kind of oven baking device for detecting performance, it is characterised in that: including test cell and host computer；
The test cell includes the pallet for placing the food baked, the phase for taking pictures to food in pallet
Machine；
The host computer includes display, enter key, controller, the Image Acquisition for acquiring image shot by camera data
Device, and to the image processor that the data of image acquisition device acquisition are handled, the display, enter key, Image Acquisition
Device, image processor are communicated to connect with the controller, the camera and described image collector communication connection.
In order to facilitate the position of adjustment camera, the test cell further includes having the Three Degree Of Freedom being arranged on the pallet
Movement mechanism, the camera is mounted on the movement mechanism of the Three Degree Of Freedom.
Simply, the movement mechanism includes the support arm that pallet two sides are arranged in along the longitudinal direction, in left-right direction cross
Across the sliding stand being arranged on two support arms, the column being arranged vertically on the sliding stand, slide along the vertical direction
Sliding block on the column is set dynamicly, and the sliding stand can be slidably connected along the longitudinal direction on two support arms, institute
Stating column can be slidably connected on sliding stand in left-right direction, and the camera is fixedly connected on the slide block.
In order to realize the automatic control mobile to camera, the movement mechanism further includes driving mechanism, the driving mechanism
Including the first driving group for driving the sliding stand mobile, the second driving group for driving the column, for driving
The third driving group of the sliding block；
The test cell further includes test control circuit plate, the control circuit board and first driving group, second
Driving group, the electrical connection of third driving group, the camera are communicated by the image acquisition device in the control circuit board and host computer
Connection, the control circuit board are also connected with the controller in the host computer.
Simply, first driving group include the first motor being electrically connected with the control circuit board, be connected to it is described
The first screw rod on first motor output shaft, first screw rod are threaded through in sliding stand along the longitudinal direction；
Second driving group includes the second motor being electrically connected with the control circuit board, is connected to second motor
The second screw rod on output shaft, second screw rod are threaded through in left-right direction in the lower end of column；
The third driving group includes the third motor being electrically connected with the control circuit board, is connected to the third motor
Third screw rod on output shaft, the third screw rod are threaded through in sliding block along the vertical direction.
In order to be tested for different food materials and nominal using different parameters, the enter key includes food materials
Attributions selection key, food baking standard selection key.
Easily, the enter key and the display are wholely set as touch screen.
Preferably, pedestal is provided with below the pallet.
Compared with the prior art, the advantages of the present invention are as follows: the detection method of the oven baking performance in the present invention passes through
The comparison of itself rgb value and comparison with standard array judge the uniformity of food baking, whether stability meets wants respectively
It asks, and the uniformity of food baking, stability can directly react the baking performance of oven, and then realize and be baked performance to oven
Direct evaluation.In this way, being provided reliably by the baking performance evaluation that the food baked to steam box directly carries out being detected as oven
Foundation, so that more direct, accurate to the evaluation of oven baking performance.And the detection device of the oven baking performance in the present invention
Then the support of hardware and software is provided to complete the detection method.
Detailed description of the invention
Fig. 1 is the flow chart for the detection method that oven is baked performance in the embodiment of the present invention.
Fig. 2 is the structural block diagram for the detection device that oven is baked performance in the embodiment of the present invention.
Fig. 3 is the schematic diagram for the detection device that oven is baked performance in the embodiment of the present invention.
Fig. 3 is the top view of Fig. 2.
Specific embodiment
The present invention will be described in further detail below with reference to the embodiments of the drawings.
As shown in Figure 1, in the present embodiment, by the detection device that oven is baked performance realize to oven be baked out food into
Row is taken pictures, and is acquired, is handled to the food image taken, and then is realized by the detection method that oven is baked performance to roasting
Case baking performance is evaluated.
Oven is baked device for detecting performance, including test cell 1 and host computer 2.
Wherein test cell 1 includes pedestal 11, pallet 12, the movement mechanism 13 of Three Degree Of Freedom, camera 14 and control circuit
Plate 15.Host computer 2 includes display 21, enter key 22, controller 23, adopts for acquiring the image of 14 captured image data of camera
Storage 24, and to the image processor 25 that is handled of data that image acquisition device 24 acquires, display 21, enter key 22,
Image acquisition device 24, image processor 25 are communicated to connect with controller 23.For easy to operate enter key 22 and display 21
It is wholely set as touch screen.In order to be tested for different food materials and nominal using different parameters, enter key 22
Including food materials Attributions selection key, food baking standard selection key.It is roasting that food to be detected, which such as can be keyed in, by enter key 22
Bread, cake that case bakes etc. are that roasting color is deeper or roasting by the standard that enter key 22 can key in food baking to be detected
Color is shallower, can be using not when the detection method using oven baking performance is detected corresponding to the content of selection key selection
With normal data group to compare.
Wherein the movement mechanism 13 of Three Degree Of Freedom includes two support arms 131, sliding stand 132, column 133,134 and of sliding block
The top of pedestal 11 is arranged in driving mechanism, pallet 12, and two support arms 131 are arranged in the two of pallet 12 along the longitudinal direction respectively
Side.Sliding stand 132, and can be relative to two support arms 131 along front and back in left-right direction across being arranged on two support arms 131
Direction sliding.Column 133 is arranged vertically on sliding stand 132, and can be slided in left-right direction relative to sliding stand 132
It is dynamic.Sliding block 134 is arranged on column 133 with being slidable in the vertical direction, and camera 14 is then fixedly connected on sliding block 134.This reality
It applies in example, slide construction can use the fit structure of slide bumping and sliding slot.
The cooperation of driving mechanism and control circuit board 15 can be realized the mobile automatic control of camera 14, in the present embodiment
Driving mechanism includes the first driving group for driving sliding stand 132 mobile, the second driving group for driving column 133, uses
In the third driving group of driving sliding block 134.First driving group includes the first motor 135 being electrically connected with control circuit board 15, connects
The first screw rod 136 on 135 output shaft of first motor is connect, the first screw rod 136 is threaded through along the longitudinal direction in sliding stand 132.
Second driving group includes the second motor 137 being electrically connected with control circuit board 15, be connected on 137 output shaft of the second motor
Two screw rods 138, the second screw rod 138 are threaded through in left-right direction in the lower end of column 133.Third driving group includes and control circuit
The third motor 139 of the electrical connection of plate 15, the third screw rod 130 being connected on 139 output shaft of third motor, 130 edge of third screw rod
Up and down direction is threaded through in sliding block 134.The data output end of camera 14 is adopted by control circuit board 15 and the image in host computer 2
24 communication connection of storage, control circuit board 15 also with 23 communication connection of controller in host computer 2.
Detection work is carried out for convenience, and roasted food will be carried out to oven and be standardized production, will such as fix matter
The face block of amount is made into circular baking food materials.It, can be more by what is artificially selected by being repeatedly baked for machine newly developed
The food of a high-quality baking quality carries out image procossing, and then obtains normal data group and various detection threshold values.And in the later period
Detection work in, oven be baked performance detection method it is as described below.Before being detected, first oven is baked to be checked
Food is placed on the center of pallet 12, and so that camera 14 is taken pictures, pallet 12 is chosen and the larger color support of food colors color difference
Disk 12 facilitates following image procossings.
The detection method of oven baking performance, comprising the following steps:
Step 1, the baking parameter for selecting food to be checked by key on host computer 2, the baking parameter and oven are to food
Object carries out roasted condition and matches, and then controller 23 can transfer the corresponding normal data group of food to be checked for subsequent right
Than using.
Controller 23 sends start command to control circuit board 15, and control circuit board 15 controls driving mechanism and works,
The driving of camera 14 is extremely located at the suitable distance position of the top of food to be checked by driving mechanism.Behind in-position, control circuit board
15 control cameras 14 start work to take pictures to the food to be checked on pallet 12, and image acquisition device 24 passes through control circuit board
15 carry out communication connection with camera 14, and then obtain the picture that camera 14 is shot, and the whole secondary content of the picture of shooting is saved as
Image to be checked, or choose the partial region of picture of shooting and save as image to be checked；
Image to be checked is converted to RGB data to form RGB data library to be checked and then transmit by step 2, image acquisition device 24
To controller 23, RGB data library to be checked is stored and is used in memory to transfer by controller 23；
Step 3, image processor 25 transfer the data in RGB data library by controller 23, and then pass through image zooming-out
Algorithm extracts the RGB data of food image part in RGB data library, and then stores in memory to form objective body RGB
Database；
In the present embodiment, the image zooming-out algorithm of use are as follows:
Image to be checked is split using Otsu algorithm；
Image after segmentation is subjected to the first fixed of the area-of-interest (ROI) of direction projection realization, that is, extracts food portion
Partial image；
The RGB data of ROI is normalized；
Gradient value is sought to the RGB data after normalization, and then generates histogram of gradients (HOG)；
Based on HOG, identification and classification is carried out to exclude the sundries on pallet 12 using SVM algorithm, extracts food image portion
The RGB data divided；
Step 4, the rgb value range intervals according to setting, the RGB data calculated in objective body RGB data library drop into respectively
The percentage of data volume in rgb value range intervals is calculated as objective body and determines array [a1%, a2%, a3% ..., aN%], N is
Natural number；
It obtains objective body and determines array [a1%, a2%, a3% ..., aN%] in maximum value aiThe corresponding rgb value range of %
Section, to all rgb values carry out average computation to obtain average RGB in the rgb value range intervals in objective body RGB data library
ValueCalculate objective body RGB data library in all RGB datas withMeansquaredeviationσ, if σ be greater than setting mean deviation threshold,
Then judge that the baking uniformity of food is unsatisfactory for requiring；If σ is less than or equal to the mean deviation threshold of setting, the roasting of food is judged
Uniformity processed meets the requirements
Step 5 corresponds to each rgb value range intervals, determines array [a to objective body1%, a2%, a3% ..., aN%]
With standard array [A1%, A2%, A3% ..., AM%] difference operation is carried out, and then obtain the difference in each rgb value range intervals
Absolute value array [B1,B2,B3,……,BK], M, K are natural number, by absolute difference array [B1,B2,B3,……,BK] in
Each data respectively with the difference threshold array [C of setting1,C2,C3,……,CL] in correspond to the corresponding difference of rgb value range intervals
Value threshold value is compared, and L is natural number, if absolute difference array [B1,B2,B3,……,BK] in have a difference absolute
Value is greater than the corresponding difference threshold of corresponding rgb value range intervals, then judges that the baking stability of food is unsatisfactory for requiring, if absolutely
To value array [B1,B2,B3,……,BK] described in absolute value data be respectively less than the corresponding difference of corresponding rgb value range intervals
Threshold value then determines that the baking stability of food is met the requirements.
The baking uniformity and stability of food are all satisfied requirement, then judge that the baking performance of oven is met the requirements, otherwise
Judge that the baking performance of oven is unsatisfactory for requiring.
For the baking performance of more accurate evaluation oven, following methods can be used:
Take pictures to each surface of the food baked, and to each surface for baking food carry out baking uniformity and
The judgement of stability judges that the baking of food is uniform if baking the requirement that each surface of food meets baking uniformity
Property meet the requirements, if the stability for baking each surface of food is met the requirements, judge food baking stability satisfaction want
It asks.
Or food is baked using different temperatures to oven respectively and is detected, if the baking for the food that each temperature bakes
Uniformity and stability are qualified, then judge that the baking performance of oven is met the requirements, if there is at least one food baking is uniform
Property or stability are not qualified, judge that the baking performance of oven is unsatisfactory for requiring.
Oven is detected using at least two foods that same temperature bakes again or respectively, if each food is roasting
Uniformity and stability processed are qualified, then judge that the baking performance of oven is met the requirements, if at least one food baking is uniform
Property or stability are not qualified, judge that the baking performance of oven is unsatisfactory for requiring.
Obtain as baking performance after, then result can be shown by display.Meanwhile in order to extend oven baking
The application range of the detection method of performance can also be classified by threshold value restriction come the baking performance to oven.
Claims (15)
1. a kind of detection method of oven baking performance, it is characterised in that the following steps are included:
Step 1 takes pictures to oven according to the food that setting nominal bakes and saves as image to be checked；
Image to be checked is converted to RGB data to form RGB data library to be checked by step 2；
Step 3, the RGB data for extracting food image part in RGB data library, to form objective body RGB data library；
Step 4 handles the RGB data in objective body RGB data library, judges that the difference between food image RGB data is
It is no to exceed threshold value, if it was exceeded, judging that the baking uniformity of food is unsatisfactory for requiring；If judging the roasting of food without departing from if
Uniformity processed is met the requirements, and then carries out step 5；
Step 5 judges whether the difference between food image RGB data and standard array exceeds threshold value, if it was exceeded, judgement food
The baking stability of object is unsatisfactory for requiring；If without departing from judging that the baking stability of food is met the requirements；
The baking uniformity and stability of food are all satisfied requirement, then judge that the baking performance of oven is met the requirements, otherwise judge
The baking performance of oven is unsatisfactory for requiring.
2. the detection method of oven baking performance according to claim 1, it is characterised in that: the step 4 processes
Journey are as follows:
Step 4.1, the rgb value range intervals according to setting, the RGB data calculated in objective body RGB data library drop into each RGB
It is worth the percentage of data volume in range intervals, is calculated as objective body and determines array [a1%, a2%, a3% ..., aN%], N is certainly
So number；
Step 4.2 obtains objective body judgement array [a1%, a2%, a3% ..., aN%] in maximum value aiThe corresponding rgb value of %
Range intervals, to all rgb values progress average computations are flat to obtain in the rgb value range intervals in objective body RGB data library
Equal rgb valueCalculate objective body RGB data library in all RGB datas withMeansquaredeviationσ, if σ be greater than setting mean square deviation
Threshold value then judges that the baking uniformity of food is unsatisfactory for requiring；If σ is less than or equal to the mean deviation threshold of setting, judge to eat
The baking uniformity of object meets the requirements
3. the detection method of oven baking performance according to claim 2, it is characterised in that: the step 5 processes
Journey are as follows: correspond to each rgb value range intervals, array [a is determined to objective body1%, a2%, a3% ..., aN%] and criterion numeral
Group [A1%, A2%, A3% ..., AM%] difference operation is carried out, and then obtain the absolute difference number in each rgb value range intervals
Group [B1,B2,B3,……,BK], M, K are natural number, by absolute difference array [B1,B2,B3,……,BK] in each data
Respectively with the difference threshold array [C of setting1,C2,C3,……,CL] in correspond to the corresponding difference threshold of rgb value range intervals into
Row compares, and L is natural number, if absolute difference array [B1,B2,B3,……,BK] in have an absolute difference be greater than pair
The corresponding difference threshold of rgb value range intervals is answered, then judges that the baking stability of food is unsatisfactory for requiring, if absolute value array
[B1,B2,B3,……,BK] described in absolute value data be respectively less than the corresponding difference threshold of corresponding rgb value range intervals, then sentence
The baking stability for determining food is met the requirements.
4. according to claim 1 to the detection method of the baking performance of oven described in 3 any claims, it is characterised in that: right
Each surface of the food baked is taken pictures, and carries out baking uniformity to each surface for baking food and stability is sentenced
It is disconnected, if baking the requirement that each surface of food meets baking uniformity, judge that the baking uniformity of food is met the requirements,
If the stability for baking each surface of food is met the requirements, judge that the baking stability of food is met the requirements.
5. according to claim 1 to the detection method of the baking performance of oven described in 3 any claims, it is characterised in that: point
It is other that oven is baked by food is detected using different temperatures, if the baking uniformity and stability of the food that each temperature bakes
It is qualified, then judge that the baking performance of oven is met the requirements, not if there is at least one food baking uniformity or stability
It is qualified then judge that the baking performance of oven is unsatisfactory for requiring.
6. according to claim 1 to the detection method of the baking performance of oven described in 3 any claims, it is characterised in that: point
It is other that oven is detected using at least two foods that same temperature bakes, if the baking uniformity and stability of each food
It is qualified, then judge that the baking performance of oven is met the requirements, if at least one food baking uniformity or stability are not qualified
Then judge that the baking performance of oven is unsatisfactory for requiring.
7. according to claim 1 to the detection method of the baking performance of oven described in 3 any claims, it is characterised in that:
In step 1, using the whole secondary content of the picture of shooting as image to be checked, or choose the picture of shooting partial region be used as to
Examine image.
8. a kind of oven for being able to achieve the detection method of oven baking performance as described in claim 1 to 7 any claim is roasting
Device for detecting performance processed, it is characterised in that: including test cell and host computer；
The test cell includes the pallet for placing the food baked, the camera for taking pictures to food in pallet；
The host computer includes display, enter key, controller, the image acquisition device for acquiring image shot by camera data,
And the image processor that is handled of data to image acquisition device acquisition, the display, enter key, image acquisition device,
Image processor is communicated to connect with the controller, the camera and described image collector communication connection.
9. oven according to claim 8 is baked device for detecting performance, it is characterised in that: the test cell further includes having
The movement mechanism of Three Degree Of Freedom on the pallet is set, and the camera is mounted on the movement mechanism of the Three Degree Of Freedom.
10. oven according to claim 9 is baked device for detecting performance, it is characterised in that: the movement mechanism includes edge
The support arm of pallet two sides is arranged in, in left-right direction across the sliding stand being arranged on two support arms, along perpendicular in front-rear direction
The sliding block on the column, the cunning is arranged in the column being arranged on the sliding stand in histogram with being slidable in the vertical direction
Dynamic platform can be slidably connected along the longitudinal direction on two support arms, and the column can be slidably connected in left-right direction and slide
On platform, the camera is fixedly connected on the slide block.
11. oven according to claim 9 is baked device for detecting performance, it is characterised in that: the movement mechanism further includes
Driving mechanism, the driving mechanism include for driving the first driving group of the sliding stand movement, for driving the column
The second driving group, the third driving group for driving the sliding block；
The test cell further includes test control circuit plate, the control circuit board and first driving group, the second driving
Group, the electrical connection of third driving group, the camera by the image acquisition device communication connection in the control circuit board and host computer,
The control circuit board is also connect with the controller communication in the host computer.
12. oven according to claim 11 is baked device for detecting performance, it is characterised in that: first driving group includes
The first motor being electrically connected with the control circuit board, the first screw rod being connected on the first motor output shaft, described
One screw rod is threaded through in sliding stand along the longitudinal direction；
Second driving group includes the second motor being electrically connected with the control circuit board, is connected to the second motor output
The second screw rod on axis, second screw rod are threaded through in left-right direction in the lower end of column；
The third driving group includes the third motor being electrically connected with the control circuit board, is connected to the third motor output
Third screw rod on axis, the third screw rod are threaded through in sliding block along the vertical direction.
13. oven according to claim 8 is baked device for detecting performance, it is characterised in that: the enter key includes food materials
Attributions selection key, food baking standard selection key.
14. oven according to claim 8 is baked device for detecting performance, it is characterised in that: the enter key and described aobvious
Show that device is wholely set as touch screen.
15. oven according to claim 8 is baked device for detecting performance, it is characterised in that: the lower section of the pallet is arranged
There is pedestal.
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| CN109447938B (en) | 2022-01-25 |
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Denomination of invention: A testing method and device for the baking performance of an oven Effective date of registration: 20231102 Granted publication date: 20220125 Pledgee: Bank of China Limited Ningbo Hangzhou Bay New Area sub branch Pledgor: NINGBO FOTILE KITCHEN WARE Co.,Ltd. Registration number: Y2023980063518 |