An automatic control system for steam curing of cement bricks

Abstract

The invention discloses an automatic control system for steam curing of cement bricks. The technical solution thereof includes a curing kiln and a curing device arranged on the curing kiln. A plurality of curing furnaces are arranged in the curing kiln, and the plurality of curing furnaces are isolated by isolation pieces. A furnace entry inspection position is arranged outside the curing kiln. The curing kiln also includes a curing processor. The curing processor includes a furnace entry judgment system, a curing system and a detection system. The furnace entry judgment system is used for detecting cement bricks that need to be cured and extracting feature data. The curing system is used for judging the feature data and generating curing information. The curing device maintains the curing kiln according to the curing information. The detection system is used for detecting whether the cement bricks are damaged during curing, and correcting the curing method according to the degree of damage, thereby improving the curing of different cement bricks and reducing the effect of the damage rate of cement bricks.

Description

Technical Field

[0001] The invention relates to the technical field of building material preparation, and more particularly to an automatic control system for cement brick steam curing. Background Art

[0002] With the rapid development of the economy, the construction industry has also developed rapidly, and the use of cement bricks in the construction industry has also increased. There are many processes involved in the production of cement bricks. After the cement bricks are produced, they need to be cured and can only be put into use after curing. The purpose of curing cement bricks is to keep the hardness of cement bricks and prevent them from cracking and breaking.

[0003] At present, with the development of mechanization replacing manpower, the production method of cement bricks has also changed. In the past, it was necessary to use forklifts to transport the stacked cement piles to the outdoors for natural curing. However, this method is uncontrollable, which increases the damage rate of cement bricks and often causes cracks in cement bricks. In response to this, curing equipment using cement brick curing furnaces has been developed. Cement bricks are cured under the action of the curing equipment, thereby reducing the damage rate of cement bricks and making the finished cement bricks more complete. However, the existing curing furnace still has the problem of a single control mode and a single curing environment in the curing furnace. However, there are many types of cement bricks. When curing different types of cement bricks, workers are required to manually screen the cement bricks and divide them. The same type of cement bricks must be cured together, and the curing environment must be adjusted for different types of cement bricks, resulting in low curing efficiency for the cement bricks. Especially when curing some special cement bricks, it is necessary to strictly distinguish the special cement bricks from other cement bricks, otherwise the special cement bricks will be damaged during curing. Therefore, a curing system that can accurately cure different types of cement bricks is urgently needed. Summary of the invention

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide an automatic control system for cement brick steam curing, which has the effect of distinguishing cement bricks and curing different cement bricks accordingly, thereby reducing the damage rate of cement bricks.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A cement brick steam curing automatic control system, comprising a curing kiln and a curing device arranged on the curing kiln;

[0007] The curing kiln is provided with a plurality of curing furnaces, and the plurality of curing furnaces are isolated by isolation pieces;

[0008] A brick delivery rail is provided outside the curing kiln, a brick delivery trolley is provided on the brick delivery rail, a bearing frame is provided on the brick delivery trolley, the bearing frame is used to carry cement bricks, the brick delivery rail is docked with a furnace rail extending into the curing furnace, and a furnace entry inspection position is provided outside the curing kiln;

[0009] It also includes a maintenance processor, which includes a furnace entry judgment system, a maintenance system and a detection system;

[0010] The furnace entry judgment system includes a brick loading judgment module and a recognition module. The brick loading judgment module is configured on the brick delivery trolley. When the brick delivery trolley moves to the furnace entry inspection position, the brick loading judgment module generates a recognition instruction. The recognition module includes a camera unit and a feature acquisition unit. When the recognition module receives the recognition instruction, the camera unit takes a picture of the cement brick placed on the carrier and generates a brick bottom image. The feature acquisition unit retrieves the brick bottom image. The feature acquisition unit is configured with an extraction strategy. The extraction strategy includes extracting feature data representing the characteristics of the cement brick according to the brick bottom image.

[0011] The maintenance system includes a comparison module and a maintenance module. The comparison module is configured with a feature data table and a maintenance table. The feature data table records feature categories and reference features corresponding to the feature categories. The feature categories represent different types of cement bricks. The reference features represent distinguishing features of different feature categories. The maintenance table records feature categories and maintenance types corresponding to the feature categories. The maintenance types represent the maintenance classification of cement bricks of different feature categories.

[0012] The comparison module is also configured with a comparison strategy, the comparison module retrieves feature data, the comparison strategy includes comparing the feature data with the feature data table and the maintenance table to determine the feature category and maintenance type of the corresponding feature data, the comparison module sends the feature category and maintenance type to the maintenance module, the maintenance module is configured with a maintenance data table and a maintenance strategy, the maintenance data table records the maintenance type and maintenance information of the corresponding maintenance type, the maintenance strategy includes determining the corresponding maintenance information according to the maintenance type and sending the maintenance information to the maintenance device, and the maintenance device performs maintenance on the cement bricks in the maintenance furnace according to the maintenance information;

[0013] The detection system includes a detection module and a correction module. The detection module is configured with a detection strategy, a reference comparison table and a time-sharing strategy. The time-sharing strategy includes dividing a plurality of detection points according to maintenance information. The parameter comparison table records the detection parameters of the corresponding feature categories and the detection indicators set at different detection points. The detection strategy includes generating a detection value according to the detection parameters corresponding to the feature categories detected at the detection points, and also includes comparing the detection value with the detection indicator. If the detection value is less than or equal to the detection indicator, the detection module generates a compliance instruction and continues maintenance according to the maintenance information table. If the detection value is greater than the compliance detection indicator, the detection module generates a correction instruction and sends it to the correction module. The detection value represents the quantity of unqualified cement bricks.

[0014] The correction module includes an analysis unit and a correction unit. The analysis unit is configured with an analysis strategy, and the analysis strategy includes a difference algorithm. The analysis strategy calculates the difference ratio between the detection value and the detection index according to the difference algorithm, and divides the difference level according to the difference ratio. The correction unit is configured with a correction strategy, and the correction strategy includes generating correction information according to the difference level, and sending the correction information to the maintenance device and the comparison module respectively. The maintenance device performs maintenance according to the correction information, and the comparison module replaces the maintenance information of the corresponding feature category in the maintenance table with the correction information.

[0015] As a further improvement of the present invention, the feature data includes contour information, color information and surface features, and the extraction strategy is specifically:

[0016] Dividing the brick bottom image into an image area and a brick body area, extracting an image of the brick body area, constructing a brick body contour with the brick body area, and generating contour information according to the brick body contour;

[0017] Extract the color of the brick in the brick outline and generate color information;

[0018] Discrete sampling is performed on the brick area to obtain multiple discrete images, and the discrete images are enlarged respectively to extract surface features in the enlarged discrete images. The surface features include surface texture, surface roughness, water-removing pits and surface particles. The surface texture represents the bonding degree of cement bricks, the surface roughness represents the surface smoothness of cement bricks, the water-removing pits represent the water storage degree of cement bricks, and the surface particles represent the adhesion degree of cement bricks to external objects. The discrete image with clear surface features is used as the image to determine the surface features.

[0019] As a further improvement of the present invention, a comparison threshold is further provided in the comparison module, and the comparison strategy is specifically as follows:

[0020] Set the comparison order for surface features, the comparison order is surface texture, water pits, surface roughness and surface particles;

[0021] Traverse the feature data table according to the feature data and compare and filter the feature data with the reference features;

[0022] Determine the screening range of the feature category according to the corresponding reference features in the feature data table indexed by the contour information and color information in the feature data;

[0023] Compare step by step according to the comparison order of the surface features, if the matching degree between the surface features in the feature data and the reference features is greater than the comparison threshold, determine the feature category corresponding to the reference features as the feature category matching the feature data;

[0024] The maintenance type in the corresponding maintenance table is extracted according to the feature category determined after comparison.

[0025] As a further improvement of the present invention, the maintenance type includes dry maintenance, moisturizing maintenance and pressurized maintenance, the maintenance information includes maintenance periods, and the maintenance periods include a first maintenance period, a second maintenance period and a third maintenance period:

[0026] The maintenance information also includes:

[0027] In the first curing period of the dry curing, moisturizing curing and pressurized curing, hot air and moist air are provided in the curing furnace for curing;

[0028] If the curing type is dry curing, only hot air is provided for curing during the second curing period, and hot air is stopped during the third curing period, and the residual heat during the second curing period is used for curing;

[0029] If the curing type is moisturizing curing, only humid air is provided for curing during the second curing period, and the humid air supply is stopped during the third curing period, and the humid air during the second curing period is used for curing;

[0030] If the curing type is pressurized curing, in the second curing period, hot air is provided and a constant pressure is maintained in the curing furnace for curing. In the third curing period, the constant pressure is maintained and the hot air supply is stopped, and the residual heat in the second curing period is used for curing.

[0031] As a further improvement of the present invention, the time-sharing strategy is specifically as follows:

[0032] The first maintenance period is divided evenly and the divided points are used as testing points;

[0033] The logic for dividing the second maintenance period is that when the second maintenance period can be equally divided by the first maintenance period, the equally divided dividing points are used as detection points; when the first maintenance period cannot be equally divided by the second maintenance period, the equally divided dividing points are used as detection points for an integer number of times;

[0034] The third maintenance period is divided into equal parts and the divided points are used as testing points.

[0035] As a further improvement of the present invention, the detection parameters include cracking parameters and stress parameters, and a detection unit is provided on the bearing frame, and the detection unit is used to detect the detection parameters of the cement bricks. The detection strategy is specifically as follows:

[0036] The cement bricks in the support frame are photographed by the detection unit to form a regional image, and whether the cement bricks are cracked is determined according to the regional image, and the number of cracked cement bricks is counted to generate a cracking value;

[0037] Applying external force to the cement brick according to the detection unit, and obtaining a stress curve of the cement brick according to the applied external force, comparing the stress curve with a standard curve, wherein the annotated curve also includes a fluctuation range, and generating a stress value by statistically analyzing cement bricks whose stress detection curves exceed the fluctuation range;

[0038] If the same cement brick contains cracking value and stress value, the statistical value of this cement brick shall be included in the cracking value;

[0039] The cracking value and stress value are superimposed to form the test value.

[0040] As a further improvement of the present invention, the analysis strategy includes a difference algorithm, and the difference algorithm is specifically:

[0041]

[0042] Among them: β represents the difference ratio, T1 represents the crack value in the detection value, T2 represents the stress value in the detection value, H represents the detection index, and A represents the weight value.

[0043] As a further improvement of the present invention, the difference level includes a high loss level, a medium loss level and a low loss level, and the analysis strategy further includes setting a difference threshold, and the difference threshold includes a high loss threshold and a separation threshold:

[0044] If the difference ratio is greater than the high-loss threshold, it is determined to be a high-loss level; if the difference ratio is between the high-loss threshold and the separation threshold, it is determined to be a medium-loss level; if the difference ratio is less than the separation threshold, it is determined to be a low-loss level. The correction strategy includes making corrections when the difference level is a medium-loss level or a high-loss level, and not making corrections when the difference level is a low-loss level.

[0045] As a further improvement of the present invention, the correction strategy is specifically as follows:

[0046] When the difference level is high loss level, the corresponding maintenance type adopts lowering the hot air temperature in the curing furnace and increasing the air humidity in the curing furnace;

[0047] When the difference level is medium damage level;

[0048] If the cracking value is greater than the stress value, increase the air humidity in the curing furnace;

[0049] If the cracking value is smaller than the stress value, lower the hot air temperature in the curing furnace.

[0050] As a further improvement of the present invention, the brick delivery trolley is provided with a vehicle control processor, the vehicle control processor includes a brick delivery module, the maintenance processor also includes a distribution system, the distribution system includes an empty furnace detection module and a distribution module, the empty furnace detection module includes a detection unit and a furnace matching unit, the detection unit is arranged at the furnace mouth of the maintenance furnace, the brick delivery trolley touches the detection unit when delivering bricks into the maintenance furnace, the detection unit generates a furnace occupation signal when being triggered, the furnace matching unit is configured with a furnace matching strategy, the furnace matching strategy includes, according to calling a maintenance furnace that has not generated a furnace occupation signal, specifying one of the maintenance furnaces that is not occupied and marking a furnace matching mark, the distribution module generates a brick delivery route according to the furnace matching mark and sends it to the brick delivery module on the brick delivery trolley, the brick delivery module controls the brick delivery trolley to deliver bricks according to the brick delivery route;

[0051] The brick delivery trolley comprises a vehicle body and a lifting platform arranged on the vehicle body, the bearing frame is arranged on the lifting platform, and the inner wall of the curing furnace is provided with a supporting frame for supporting the bearing frame;

[0052] The vehicle control processor also includes a brick-dropping module, which includes a brick-dropping detection unit and a lifting unit. The brick-dropping detection unit is arranged on a support frame. When the support frame supports the load-bearing frame, it touches the brick-dropping detection unit. The brick-dropping detection unit generates a brick-dropping instruction and sends it to the lifting unit. The lifting unit is arranged on the vehicle body and is used to control the lifting platform. When the lifting unit receives the brick-dropping instruction, it controls the lifting platform to descend so that the brick-delivering trolley is separated from the load-bearing frame. The brick-dropping detection unit also generates a return instruction and sends it to the vehicle control processor. The vehicle control processor controls the brick-delivering trolley to return to the furnace inspection position.

[0053] The beneficial effects of the present invention are as follows: by setting a furnace entry inspection position outside the curing kiln, when the brick delivery trolley enters the furnace entry inspection position, the brick loading judgment module generates a recognition instruction, and after receiving the recognition instruction, the recognition module extracts the features of the cement bricks on the support frame and generates feature data, and under the action of the comparison module, the feature data is compared with the feature data table to determine the corresponding feature category, so as to realize the recognition and classification of different types of cement bricks, and under the action of the curing module, the corresponding curing information is determined according to the feature category, so as to control the curing device to perform differential curing on different cement bricks, and when performing curing, the curing condition in the curing furnace is detected by the detection module, and the detected detection value is compared with the detection index to determine whether the damage amount of the cement bricks in the curing furnace exceeds the provisions of the detection index, and when it exceeds the detection index, it is corrected by the correction module, so as to achieve the effect of performing reasonable curing and reducing the breakage rate of cement bricks. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 A system flow chart embodying the present invention;

[0055] Figure 2 To show the structural diagram of the curing kiln;

[0056] Figure 3 To reflect the structural diagram of the curing furnace;

[0057] Figure 4 To reflect the structural diagram of the brick-delivering trolley.

[0058] Attached figures: 1. curing kiln; 11. curing furnace; 12. isolating piece; 13. curing device; 2. brick delivery track; 21. furnace track; 22. furnace entry inspection position; 3. brick delivery trolley; 4. furnace entry judgment system; 41. brick loading judgment module; 42. recognition module; 421. camera unit; 422. feature acquisition unit; 5. maintenance system; 51. comparison module; 511. feature data table; 512. maintenance table; 52. maintenance module; 521. maintenance data table; 6. detection system; 61. correction module; 62. detection module; 621. reference comparison table. DETAILED DESCRIPTION

[0059] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. The same parts are represented by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the accompanying drawings, and the words "bottom surface" and "top surface", "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0060] refer to Figures 1 to 4As shown, a specific implementation of a cement brick steam curing automatic control system of the present invention includes a curing kiln 1 and a curing device 13 arranged on the curing kiln 1. The curing device 13 is a curing structure used in the prior art and will not be described in detail here; it also includes a curing processor. A plurality of curing furnaces 11 are arranged in the curing kiln 1, and the plurality of curing furnaces 11 are isolated by isolation members 12; a brick delivery slide rail is arranged outside the curing kiln 1, a brick delivery trolley 3 is arranged on the brick delivery track 2, a load frame is arranged on the brick delivery trolley 3, and the load frame is used to carry cement bricks. The brick delivery slide rail is connected to a furnace rail 21 extending into the curing furnace 11, and a furnace entry inspection position 22 is arranged outside the curing kiln 1.

[0061] A central control display screen is arranged on the outer wall of the curing kiln 1, and a plan view of the curing furnace 11 is displayed on the central control display screen. A vehicle control processor is arranged on the brick delivering trolley 3, and the vehicle control processor includes a brick delivering module. The curing processor also includes a distribution system, and the distribution system includes an empty furnace detection module and a distribution module. The empty furnace detection module includes a detection unit and a furnace distribution unit. The detection unit is arranged at the furnace mouth of the curing furnace 11, and the brick delivering trolley 3 touches the detection unit when delivering bricks into the curing furnace 11. When the detection unit is triggered, a furnace occupation signal is generated. When the curing furnace 11 is not occupied, the position of the curing furnace 11 displayed on the plan view is highlighted in green. When the furnace occupation signal is generated, the curing furnace 11 where the triggered detection unit is located changes its display color to red, so that the usage status of the curing furnace 11 in the curing kiln 1 can be accurately judged through the central control display screen.

[0062] The furnace allocation unit is configured with a furnace allocation strategy, which includes, according to the maintenance furnace 11 that has not generated the furnace occupation signal, specifying one of the maintenance furnaces 11 that is not occupied and marking the furnace allocation mark, the distribution module generates a brick delivery route according to the furnace allocation mark and sends it to the brick delivery module on the brick delivery trolley 3, the brick delivery module controls the brick delivery trolley 3 to deliver bricks according to the brick delivery route, and when specifying the maintenance furnace 11, the maintenance furnace 11 that is closest to the furnace entry inspection position 22 and is not occupied is given priority;

[0063] The brick-feeding trolley 3 includes a vehicle body and a lifting platform arranged on the vehicle body, the bearing frame is arranged on the lifting platform, and a support frame for supporting the bearing frame is arranged on the inner wall of the curing furnace 11. When the brick-feeding trolley 3 delivers bricks into the curing furnace 11, the bearing frame slides along the upper surface of the support frame, so that the brick-feeding trolley 3 is convenient to drive into the curing furnace 11 along the furnace rail 21 to realize brick delivery, and it is not easy to touch the support frame; the vehicle control processor also includes a brick-dropping module, and the brick-dropping module includes a brick-dropping detection unit and a lifting unit. The brick-dropping detection unit is arranged on the support frame. When the support frame supports the bearing frame, the brick-dropping detection unit is touched. The brick-dropping detection unit generates a brick-dropping instruction and sends it to the lifting unit. The lifting unit is arranged on the vehicle body and is used to control the lifting platform. When the lifting unit receives the brick-dropping instruction, it controls The lifting platform descends to separate the brick delivery trolley 3 from the carrier frame, thereby completing the brick delivery and facilitating the brick delivery trolley 3 to drive out of the curing furnace 11. The lower brick detection unit also generates a return instruction and sends it to the vehicle control processor. The vehicle control processor controls the brick delivery trolley 3 to return to the furnace inspection position 22. There are at least two furnace inspection positions 22, so that the brick delivery trolley 3 can be set to at least two, thereby improving the brick delivery efficiency. A route statistics module is also provided in the vehicle control processor. The route statistics module is configured with a statistical strategy. The statistical strategy includes a brick delivery route planned in real time according to the analysis, and a return route for the brick delivery trolley 3 to return to the furnace inspection position 22 is avoided by planning the brick delivery route, so as to avoid the collision between the brick delivery trolley 3 used for delivering bricks and the brick delivery trolley 3 returning to the furnace inspection position 22.

[0064] The maintenance processor includes a furnace entry judgment system 4, a maintenance system 5 and a detection system 6;

[0065] The furnace entry judgment system 4 includes a brick loading judgment module 41 and a recognition module 42. The brick loading judgment module 41 is configured on the brick delivery trolley 3. When the brick delivery trolley 3 moves to the furnace entry inspection position 22, the brick loading judgment module 41 generates a recognition instruction. The recognition module 42 includes a camera unit 421 and a feature acquisition unit 422. When the recognition module 42 receives the recognition instruction, the camera unit 421 shoots the cement brick placed on the carrier and generates a brick bottom image. The feature acquisition unit 422 retrieves the brick bottom image. The feature acquisition unit 422 is configured with an extraction strategy. The extraction strategy includes extracting feature data characterizing the characteristics of the cement brick according to the brick bottom image. The feature data includes contour information, color information and surface features. The extraction strategy is specifically as follows:

[0066] Dividing the brick bottom image into an image area and a brick body area, extracting an image of the brick body area, constructing a brick body contour with the brick body area, and generating contour information according to the brick body contour;

[0067] Extract the color of the brick in the brick outline and generate color information;

[0068] Discrete sampling is performed on the brick area to obtain multiple discrete images, and the discrete images are enlarged respectively to extract surface features in the enlarged discrete images. The surface features include surface texture, surface roughness, water-removing pits and surface particles. The surface texture represents the bonding degree of cement bricks, the surface roughness represents the surface smoothness of cement bricks, the water-removing pits represent the water storage degree of cement bricks, and the surface particles represent the adhesion degree of cement bricks to external objects. The discrete image with clear surface features is used as the image to determine the surface features.

[0069] Because the outline and color are the most obvious distinguishing references when classifying cement bricks, the acquisition of outline information and color information can quickly index the types of cement bricks, thereby determining the type range of cement bricks. The extraction of surface features can accurately classify the actual cement bricks.

[0070] The maintenance system 5 includes a comparison module 51 and a maintenance module 52. The comparison module 51 is configured with a feature data table 511 and a maintenance table 512. The feature data table 511 records feature categories and reference features of corresponding feature categories. Feature categories represent different types of cement bricks. Reference features represent distinguishing features of different feature categories. The maintenance table 512 records feature categories and maintenance types corresponding to the feature categories. The maintenance types represent the maintenance classification of cement bricks of different feature categories. The maintenance types include dry maintenance, moisturizing maintenance and pressurized maintenance.

[0071] The comparison module 51 is also configured with a comparison strategy. The comparison module 51 retrieves the feature data. The comparison strategy includes comparing the feature data with the feature data table 511 and the maintenance table 512 to determine the feature category and maintenance type of the corresponding feature data. The comparison module 51 sends the feature category and maintenance type to the maintenance module 52. The maintenance module 52 is configured with a maintenance data table 521 and a maintenance strategy. The maintenance data table 521 records the maintenance type and the maintenance information of the corresponding maintenance type. The maintenance strategy includes determining the corresponding maintenance information according to the maintenance type and sending the maintenance information to the maintenance device 13. The maintenance device 13 maintains the cement bricks in the curing furnace 11 according to the maintenance information.

[0072] The comparison module 51 is also provided with a comparison threshold, and the comparison strategy is specifically as follows:

[0073] Set the comparison order for surface features, the comparison order is surface texture, water pits, surface roughness and surface particles;

[0074] Traversing the feature data table 511 according to the feature data and comparing and screening the feature data with reference features;

[0075] Determine the screening range of the feature category by indexing the corresponding reference features in the feature data table 511 according to the contour information and color information in the feature data;

[0076] Compare step by step according to the comparison order of the surface features, if the matching degree between the surface features in the feature data and the reference features is greater than the comparison threshold, determine the feature category corresponding to the reference features as the feature category matching the feature data;

[0077] The maintenance type in the corresponding maintenance table 512 is extracted according to the feature category determined after the comparison.

[0078] The corresponding feature category is determined by comparing the extracted feature data with the feature data table 511, and the corresponding maintenance type is determined based on the feature category, so as to quickly determine the type of cement brick and match the maintenance type of the corresponding cement brick type.

[0079] The maintenance information includes the maintenance period, which includes the first maintenance period, the second maintenance period and the third maintenance period:

[0080] Maintenance information also includes:

[0081] During the first curing period of dry curing, moisturizing curing and pressurized curing, hot air and moist air are provided in the curing furnace 11 for curing;

[0082] If the curing type is dry curing, only hot air is provided for curing during the second curing period, and hot air is stopped during the third curing period, and the residual heat during the second curing period is used for curing;

[0083] If the curing type is moisturizing curing, only humid air is provided for curing during the second curing period, and the humid air supply is stopped during the third curing period, and the humid air during the second curing period is used for curing;

[0084] If the curing type is pressurized curing, in the second curing period, hot air is provided and a constant pressure is maintained in the curing furnace 11 for curing. In the third curing period, the constant pressure is maintained and hot air is stopped from being provided, and the residual heat in the second curing period is used for curing.

[0085] The hot air is used to provide the curing temperature in the curing furnace 11, and the temperature of the hot air is different according to different feature categories, so that the best curing temperature suitable for different feature categories can be provided for different feature categories. The humid air is used to provide the curing humidity in the curing furnace 11, and the humidity provided by the humid air during curing of different feature categories is different, so the best curing humidity suitable for the feature category is provided. When curing for different curing types, accurate curing is performed by controlling the curing temperature and humidity during the curing period.

[0086] The detection system 6 includes a detection module 62 and a correction module 61. The detection module 62 is configured with a detection strategy, a reference comparison table 621 and a time-sharing strategy. The time-sharing strategy includes dividing multiple detection points according to the maintenance information in the maintenance information. The parameter comparison table records the detection parameters of the corresponding feature categories and the detection indicators set at different detection points. The inspection parameters include cracking parameters and stress parameters. The cracking parameters and stress parameters are set as the most likely damage parameters during cement brick maintenance, and are also the most important parameters during maintenance. The detection strategy includes detecting the detection parameters corresponding to the feature categories at the detection points and generating detection values. The detection data value represents the number of damaged cement bricks, and the detection indicator represents the maximum damage value of the cement bricks. It also includes comparing the detection value with the detection indicator. If the detection value is less than or equal to the detection indicator, the detection module 62 generates a compliance instruction and continues maintenance according to the maintenance information table. If the detection value is greater than the detection indicator, the detection module 62 generates a correction instruction and sends it to the correction module 61.

[0087] The specific time-sharing strategy is:

[0088] The first curing period is evenly divided into two parts and the dividing points are used as detection points. There are two detection points in the first curing period, which are the middle time point and the end time point of the first curing period;

[0089] The logic for dividing the second maintenance period is that when the second maintenance period can be equally divided by the first maintenance period, the equally divided dividing point is used as the detection point. The detection point in the second maintenance period is the end time point of each first maintenance period when the first maintenance period is equally divided. When the first maintenance period cannot be equally divided into the second maintenance period, the dividing point of an integer number of equally divided times is used as the detection point. The end time of the equally divided first maintenance period is used as the detection point. Finally, if the second maintenance period is greater than the remainder after the first maintenance period is equally divided, no detection point is set.

[0090] The third maintenance period is evenly divided into two parts and the dividing points are used as detection points. There are two detection points in the third maintenance period, which are the middle time point and the end time point of the third maintenance period.

[0091] By setting multiple detection points during the maintenance period and conducting multiple tests to determine whether corrections are needed at each stage of the maintenance period, the damage rate of cement bricks during maintenance can be reduced.

[0092] The detection parameters include cracking parameters and stress parameters. A detection unit is provided on the support frame. The detection unit is a telescopic rod, and a camera for photographing cement bricks is configured on the detection unit. The detection unit is used to detect the detection parameters of cement bricks. The specific detection strategy is:

[0093] The cement bricks in the support frame are photographed by the detection unit to form a regional image, and whether the cement bricks are cracked is determined according to the regional image, and the number of cracked cement bricks is counted to generate a cracking value;

[0094] Applying external force to the cement brick according to the detection unit, and obtaining a stress curve of the cement brick according to the applied external force, comparing the stress curve with a standard curve, wherein the annotated curve also includes a fluctuation range, and generating a stress value by statistically analyzing cement bricks whose stress detection curves exceed the fluctuation range;

[0095] If the same cement brick contains cracking value and stress value, the statistical value of this cement brick shall be included in the cracking value;

[0096] The cracking value and stress value are superimposed to form the test value.

[0097] The correction module 61 includes an analysis unit and a correction unit. The analysis unit is configured with an analysis strategy, the analysis strategy includes a difference algorithm, the analysis strategy calculates the difference ratio between the detection value and the detection index according to the difference algorithm, and divides the difference level according to the difference ratio. The correction unit is configured with a correction strategy, the correction strategy includes generating correction information according to the difference level, and sending the correction information to the maintenance device 13 and the comparison module 51 respectively. The maintenance device 13 performs maintenance according to the correction information, and the comparison module 51 replaces the maintenance information of the corresponding feature category in the maintenance table 512 with the correction information.

[0098] The difference algorithm is as follows:

[0099]

[0100] Among them: β represents the difference ratio, T1 represents the crack value in the detection value, T2 represents the stress value in the detection value, H represents the detection index, A represents the weight value, and the difference ratio is obtained by subtracting the detection value from the detection index to obtain the damage amount exceeding the detection index, and setting the weight. The weight value is set to 1.5.

[0101] The difference levels include high-loss level, medium-loss level and low-loss level. The analysis strategy also includes setting difference thresholds, which include high-loss thresholds and separation thresholds:

[0102] If the difference ratio is greater than the high-damage threshold, it is determined as a high-damage level; if the difference ratio is between the high-damage threshold and the separation threshold, it is determined as a medium-damage level; if the difference ratio is less than the separation threshold, it is determined as a low-damage level. The correction strategy includes making corrections when the difference level is a medium-damage level or a high-damage level. When the difference level is a low-damage level, some cement bricks may be normally damaged, which does not affect the curing quality of other cement bricks in the curing furnace 11. Therefore, no correction is made to the low-damage level.

[0103] The specific correction strategies are:

[0104] When the difference level is a high-damage level, the corresponding maintenance type adopts lowering the hot air temperature in the curing furnace 11 and increasing the air humidity in the curing furnace 11;

[0105] When the difference level is medium damage level;

[0106] If the cracking value is greater than the stress value, increase the air humidity in the curing furnace 11;

[0107] If the cracking value is less than the stress value, the hot air temperature in the curing furnace 11 is reduced.

[0108] At a high damage level, it means that the curing environment in the curing furnace 11 obviously does not meet the curing requirements, and is defined as a situation where the temperature is too high and the humidity is too low. In this case, the temperature in the curing furnace 11 is lowered and the humidity in the curing furnace 11 is increased for regulation. At a medium damage level, if the cracking value is greater than the stress value, it means that the humidity in the curing furnace 11 is too low, causing the cement bricks to dry and crack under high temperature conditions. In this case, it is necessary to increase the humidity in the curing furnace 11; if the stress value is greater than the cracking value, it means that the temperature in the curing furnace 11 is too high, causing the cement bricks to become brittle. In this case, it is necessary to lower the temperature in the curing furnace 11 to adjust the environment in the curing furnace 11 to a reasonable curing environment, and generate correction information to reduce the damage rate of cement bricks during curing, and correct the maintenance information through the correction information, so that in subsequent maintenance, the damage rate of cement bricks during curing can be further reduced.

[0109] Working principle and effect:

[0110] By setting a furnace entry inspection position 22 outside the curing kiln 1, when the brick delivery trolley 3 enters the furnace entry inspection position 22, the brick loading judgment module 41 generates a recognition instruction. After receiving the recognition instruction, the recognition module 42 extracts the features of the cement bricks on the support frame and generates feature data. Under the action of the comparison module 51, the feature data is compared with the feature data table 511 to determine the corresponding feature category, so as to realize the recognition and classification of different types of cement bricks. Under the action of the curing module 52, the corresponding curing information is determined according to the feature category, so as to control the curing device 13 to perform different curing on different cement bricks. When performing curing, the curing condition in the curing furnace 11 is detected by the detection module 62. By comparing the detected detection value with the detection index, it is determined whether the damage amount of the cement bricks in the curing furnace 11 exceeds the provisions of the detection index. When exceeding the detection index, correction is performed through the correction module 61, so as to achieve the effect of performing reasonable curing and reducing the breakage rate of cement bricks.

[0111] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A cement brick steam curing automatic control system, comprising a curing kiln (1) and a curing device (13) arranged on the curing kiln (1), characterized in that: The curing kiln (1) is provided with a plurality of curing furnaces (11), and the plurality of curing furnaces (11) are isolated by isolation members (12); The curing kiln (1) is provided with a brick-feeding slide rail outside, the brick-feeding track (2) is provided with a brick-feeding trolley (3), the brick-feeding trolley (3) is provided with a bearing frame, the bearing frame is used to bear cement bricks, the brick-feeding slide rail is connected to a furnace rail (21) extending into the curing furnace (11), and a furnace entry inspection position (22) is provided outside the curing kiln (1); It also includes a maintenance processor, which includes a furnace entry judgment system (4), a maintenance system (5) and a detection system (6); The furnace entry judgment system (4) comprises a brick loading judgment module (41) and a recognition module (42). The brick loading judgment module (41) is arranged on the brick delivery trolley (3). When the brick delivery trolley (3) moves to the furnace entry inspection position (22), the brick loading judgment module (41) generates a recognition instruction. The recognition module (42) comprises a camera unit (421) and a feature acquisition unit (422). When the recognition module (42) receives the recognition instruction, the camera unit (421) photographs the cement bricks placed on the carrier and generates a brick bottom image. The feature acquisition unit (422) retrieves the brick bottom image. An extraction strategy is arranged in the feature acquisition unit (422). The extraction strategy comprises extracting feature data representing the characteristics of the cement brick according to the brick bottom image. The maintenance system (5) comprises a comparison module (51) and a maintenance module (52), wherein the comparison module (51) is provided with a feature data table (511) and a maintenance table (512), wherein the feature data table (511) records feature categories and reference features corresponding to the feature categories, wherein the feature categories represent different types of cement bricks, wherein the reference features represent distinguishing features of different feature categories, and wherein the maintenance table (512) records feature categories and maintenance types corresponding to the feature categories, wherein the maintenance types represent maintenance classification of cement bricks of different feature categories; The comparison module (51) is also configured with a comparison strategy. The comparison module (51) retrieves characteristic data. The comparison strategy includes comparing the characteristic data with a characteristic data table (511) and a maintenance table (512) to determine the characteristic category and maintenance type of the corresponding characteristic data. The comparison module (51) sends the characteristic category and maintenance type to a maintenance module (52). The maintenance module (52) is configured with a maintenance data table (521) and a maintenance strategy. The maintenance data table (521) records the maintenance type and maintenance information of the corresponding maintenance type. The maintenance strategy includes determining the corresponding maintenance information according to the maintenance type and sending the maintenance information to a maintenance device (13). The maintenance device (13) performs maintenance on cement bricks in the maintenance furnace (11) according to the maintenance information. The detection system (6) comprises a detection module (62) and a correction module (61), wherein the detection module (62) is configured with a detection strategy, a reference comparison table (621) and a time-sharing strategy, wherein the time-sharing strategy comprises dividing a plurality of detection points according to maintenance information, wherein the reference comparison table (621) records detection parameters of corresponding feature categories and detection indicators set at different detection points, wherein the detection strategy comprises generating a detection value according to detection parameters corresponding to the feature categories detected at the detection points, and further comprises comparing the detection value with the detection indicator, wherein if the detection value is less than or equal to the detection indicator, the detection module (62) generates a compliance instruction and continues maintenance according to the maintenance information table, and if the detection value is greater than the compliance inspection indicator, the detection module (62) generates a correction instruction and sends it to the correction module (61), wherein the detection value represents the quantity value of unqualified cement bricks; The correction module (61) includes an analysis unit and a correction unit. The analysis unit is configured with an analysis strategy. The analysis strategy includes a difference algorithm. The analysis strategy calculates the difference ratio between the detection value and the detection index according to the difference algorithm, and divides the difference level according to the difference ratio. The correction unit is configured with a correction strategy. The correction strategy includes generating correction information according to the difference level, and sending the correction information to the maintenance device (13) and the comparison module (51) respectively. The maintenance device (13) performs maintenance according to the correction information, and the comparison module (51) replaces the maintenance information of the corresponding feature category in the maintenance data table (521) with the correction information.

2. The automatic control system for cement brick steam curing according to claim 1 is characterized in that: The feature data includes contour information, color information and surface features, and the extraction strategy is specifically as follows: Dividing the brick bottom image into an image area and a brick body area, extracting an image of the brick body area, constructing a brick body contour with the brick body area, and generating contour information according to the brick body contour; Extract the color of the brick in the brick outline and generate color information; Discrete sampling is performed on the brick area to obtain multiple discrete images, and the discrete images are enlarged respectively to extract surface features in the enlarged discrete images. The surface features include surface texture, surface roughness, water-removing pits and surface particles. The surface texture represents the bonding degree of cement bricks, the surface roughness represents the surface smoothness of cement bricks, the water-removing pits represent the water storage degree of cement bricks, and the surface particles represent the adhesion degree of cement bricks to external objects. The discrete image with clear surface features is used as the image to determine the surface features.

3. The automatic control system for cement brick steam curing according to claim 2 is characterized in that: The comparison module (51) is also provided with a comparison threshold, and the comparison strategy is specifically: Set the comparison order for surface features, the comparison order is surface texture, water pits, surface roughness and surface particles; Traversing the feature data table (511) according to the feature data and comparing and screening the feature data with reference features; Determine the screening range of the feature category by indexing the corresponding reference features in the feature data table (511) according to the contour information and color information in the feature data; Compare step by step according to the comparison order of the surface features, if the matching degree between the surface features in the feature data and the reference features is greater than the comparison threshold, determine the feature category corresponding to the reference features as the feature category matching the feature data; The maintenance type in the corresponding maintenance table (512) is extracted according to the feature category determined after the comparison.

4. The automatic control system for cement brick steam curing according to claim 3 is characterized in that: The maintenance type includes dry maintenance, moisturizing maintenance and pressurized maintenance, and the maintenance information includes maintenance periods, which include a first maintenance period, a second maintenance period and a third maintenance period: The maintenance information also includes: In the first curing period of the dry curing, the moisturizing curing and the pressurized curing, hot air and moist air are provided in the curing furnace (11) for curing; If the curing type is dry curing, only hot air is provided for curing during the second curing period, and hot air is stopped during the third curing period, and the residual heat during the second curing period is used for curing; If the curing type is moisturizing curing, only humid air is provided for curing during the second curing period, and the humid air supply is stopped during the third curing period, and the humid air during the second curing period is used for curing; If the curing type is pressurized curing, during the second curing period, hot air is provided and a constant pressure is maintained in the curing furnace (11) for curing. During the third curing period, the constant pressure is maintained and the hot air supply is stopped, and the residual heat during the second curing period is used for curing.

5. The automatic control system for cement brick steam curing according to claim 4 is characterized in that: The time-sharing strategy is specifically as follows: The first maintenance period is divided evenly and the divided points are used as testing points; The logic for dividing the second maintenance period is that when the second maintenance period can be equally divided by the first maintenance period, the equally divided dividing points are used as detection points; when the first maintenance period cannot be equally divided by the second maintenance period, the equally divided dividing points are used as detection points for an integer number of times; The third maintenance period is divided into equal parts and the divided points are used as testing points.

6. The automatic control system for cement brick steam curing according to claim 5 is characterized in that: The detection parameters include cracking parameters and stress parameters. A detection unit is provided on the support frame, and the detection unit is used to detect the detection parameters of the cement brick. The detection strategy is specifically as follows: The cement bricks in the support frame are photographed by the detection unit to form a regional image, and whether the cement bricks are cracked is determined according to the regional image, and the number of cracked cement bricks is counted to generate a cracking value; Applying external force to the cement brick according to the detection unit, and obtaining a stress curve of the cement brick according to the applied external force, comparing the stress curve with a standard curve, wherein the standard curve also includes a fluctuation range, and generating a stress value by statistically analyzing the cement bricks whose stress detection curves exceed the fluctuation range; If the same cement brick contains cracking value and stress value, the cracking value and stress value are superimposed to form the test value.

7. The automatic control system for cement brick steam curing according to claim 6 is characterized in that: The difference algorithm is specifically: Among them: β represents the difference ratio, T1 represents the crack value in the detection value, T2 represents the stress value in the detection value, H represents the detection index, and A represents the weight value.

8. The automatic control system for cement brick steam curing according to claim 1 is characterized in that: The difference levels include high-loss level, medium-loss level and low-loss level. The analysis strategy also includes setting a difference threshold, which includes a high-loss threshold and a separation threshold: If the difference ratio is greater than the high-loss threshold, it is determined to be a high-loss level; if the difference ratio is between the high-loss threshold and the separation threshold, it is determined to be a medium-loss level; if the difference ratio is less than the separation threshold, it is determined to be a low-loss level. The correction strategy includes making corrections when the difference level is a medium-loss level or a high-loss level, and not making corrections when the difference level is a low-loss level.

9. The automatic control system for cement brick steam curing according to claim 8 is characterized in that: The specific correction strategies are: When the difference level is a high-damage level, the corresponding maintenance type adopts lowering the hot air temperature in the curing furnace (11) and increasing the air humidity in the curing furnace (11); When the difference level is medium damage level; If the cracking value is greater than the stress value, the air humidity in the curing furnace (11) is increased; If the cracking value is smaller than the stress value, the hot air temperature in the curing furnace (11) is reduced.

10. A cement brick steam curing automatic control system according to any one of claims 1 to 9, characterized in that: The brick delivery trolley (3) is provided with a vehicle control processor, the vehicle control processor includes a brick delivery module, the maintenance processor also includes a distribution system, the distribution system includes an empty furnace detection module and a distribution module, the empty furnace detection module includes a detection unit and a furnace matching unit, the detection unit is arranged at the furnace mouth of the maintenance furnace (11), the brick delivery trolley (3) touches the detection unit when delivering bricks into the maintenance furnace (11), and generates a furnace occupation signal when the detection unit is triggered, and the furnace matching unit is configured with a furnace matching strategy, the furnace matching strategy includes, according to calling a maintenance furnace (11) that does not generate a furnace occupation signal, specifying one of the maintenance furnaces (11) that is not occupied and marking a furnace matching mark, the distribution module generates a brick delivery route according to the furnace matching mark and sends it to the brick delivery module on the brick delivery trolley (3), and the brick delivery module controls the brick delivery trolley (3) to deliver bricks according to the brick delivery route; The brick delivery trolley (3) comprises a vehicle body and a lifting platform arranged on the vehicle body, the bearing frame is arranged on the lifting platform, and the inner wall of the curing furnace (11) is provided with a supporting frame for supporting the bearing frame; The vehicle control processor also includes a brick lowering module, which includes a brick lowering detection unit and a lifting unit. The brick lowering detection unit is arranged on the support frame. When the support frame supports the load-bearing frame, the brick lowering detection unit touches the brick lowering detection unit. The brick lowering detection unit generates a brick lowering instruction and sends it to the lifting unit. The lifting unit is arranged on the vehicle body and is used to control the lifting platform. When the lifting unit receives the brick lowering instruction, it controls the lifting platform to descend so that the brick delivery trolley (3) is separated from the load-bearing frame. The brick lowering detection unit also generates a return instruction and sends it to the vehicle control processor. The vehicle control processor controls the brick delivery trolley (3) to return to the furnace inspection position (22).

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