阅读说明：本技术 产品质量预测方法以及系统 (Product quality prediction method and system ) 是由 路松峰 熊浩辰 吴俊军 帖军 郑禄 王江晴 于 2021-07-09 设计创作，主要内容包括：本发明属于产品质量管控领域,公开了一种产品质量预测方法以及系统。该方法获取待预测产品的生产环境数据、生产相关数据以及当前生产信息；根据预设质量周期性预测模型对生产环境数据进行预测,得到周期性预测结果；根据预设质量趋势性预测模型对生产相关数据进行预测,得到质量趋势性预测结果；根据预设时间接近度预测模型对待预测产品的历史生产周期数据进行预测,获得历史数据预测结果；根据当前生产信息与历史数据预测结果确定时间接近度预测结果；根据周期性预测结果、质量趋势性预测结果和时间接近度预测结果确定待预测产品的最终预测结果。相对于现有的产品制造完成后检测其质量的方式,本发明上述方式能够提高产品质量检测的时效性。(The invention belongs to the field of product quality control and discloses a product quality prediction method and a product quality prediction system. The method comprises the steps of obtaining production environment data, production related data and current production information of a product to be predicted; predicting production environment data according to a preset quality periodic prediction model to obtain a periodic prediction result; predicting production related data according to a preset quality trend prediction model to obtain a quality trend prediction result; predicting historical production cycle data of a product to be predicted according to a preset time proximity prediction model to obtain a historical data prediction result; determining a time proximity prediction result according to the current production information and the historical data prediction result; and determining a final prediction result of the product to be predicted according to the periodic prediction result, the quality trend prediction result and the time proximity prediction result. Compared with the existing mode of detecting the quality of the product after the product is manufactured, the mode provided by the invention can improve the timeliness of product quality detection.)

1. A product quality prediction method, characterized by comprising:

acquiring production environment data, production related data and current production information of a product to be predicted;

predicting the production environment data according to a preset quality periodic prediction model to obtain a periodic prediction result;

predicting the production related data according to a preset quality trend prediction model to obtain a quality trend prediction result;

predicting historical production cycle data of the product to be predicted according to a preset time proximity prediction model to obtain a historical data prediction result;

determining a time proximity prediction result according to the current production information and the historical data prediction result;

and determining a final prediction result of the product to be predicted according to the periodic prediction result, the quality trend prediction result and the time proximity prediction result.

2. The product quality prediction method of claim 1 wherein, after the step of determining a final prediction outcome for the product to be predicted from the periodic prediction outcome, the quality trending prediction outcome, and the temporal proximity prediction outcome, further comprising:

determining production recommendation information of the product to be predicted according to the final prediction result;

and feeding back the production suggestion information to a production system host so that the production system host judges whether to continue producing the product to be predicted according to the production suggestion information.

3. The product quality prediction method of claim 1 wherein the step of determining a final prediction result for the product to be predicted from the periodic prediction result, the quality trending prediction result, and the temporal proximity prediction result comprises:

determining weight distribution information corresponding to the product to be predicted according to the type of the product to be predicted and historical production data;

and determining a final prediction result according to the weight distribution information, the periodic prediction result, the quality trend prediction result and the time proximity prediction result.

4. The product quality prediction method of claim 1, wherein the step of predicting the production environment data according to a preset quality periodic prediction model to obtain a periodic prediction result comprises:

acquiring equipment parameter information and production environment information in the production environment data;

determining a digital factor array according to the equipment parameter information and the production environment information;

determining a stateful factor array according to the equipment parameter information and the production environment information;

and inputting the digital factor array and the state factor array into the preset quality periodic prediction model to obtain a periodic prediction result.

5. The product quality prediction method of claim 1, wherein the step of predicting the production related data according to a preset quality trend prediction model to obtain a quality trend prediction result comprises:

acquiring material information in the production-related data;

preprocessing the material information to obtain a target input array;

and inputting the target input array into the preset quality trend prediction model to obtain a quality trend prediction result.

6. The product quality prediction method of any one of claims 1 to 2, wherein the step of obtaining the production environment data, the production-related data, and the current production information of the product to be predicted includes:

and responding to a product quality prediction instruction sent by the production system host, and acquiring production environment data, production related data and current production information of the product to be predicted from a production system database.

7. The product quality prediction method of any one of claims 1 to 5, wherein after the step of determining a final predicted outcome for the product to be predicted from the periodic predicted outcome, the quality trending predicted outcome, and the temporal proximity predicted outcome, the method further comprises:

judging whether the prediction model has gradient disappearance or gradient explosion;

when the gradient of the prediction model disappears or the gradient explodes, optimizing the preset model through a residual error network to obtain an optimized target model, and predicting the product quality through the optimized target model;

wherein the prediction models include the quality periodicity prediction model, the preset quality trend prediction model, and the preset temporal proximity prediction model.

8. A product quality prediction system is characterized by comprising a quality periodicity prediction module, a quality trend prediction module, a time proximity prediction module and a terminal server:

the quality periodicity prediction module is used for predicting the production environment data of the product to be predicted according to a preset quality periodicity prediction model to obtain a periodicity prediction result;

the quality trend prediction module is used for predicting the production related data of the product to be predicted according to a preset quality trend prediction model to obtain a quality trend prediction result;

the time proximity prediction module is used for predicting historical production cycle data according to a preset time proximity prediction model to obtain a historical data prediction result;

the time proximity prediction module is further used for determining a time proximity prediction result according to the current production information of the product to be predicted and the historical data prediction result;

and the terminal server is used for determining a final prediction result of the product to be predicted according to the periodic prediction result, the quality trend prediction result and the time proximity prediction result.

9. The product quality prediction system of claim 8, wherein the quality periodicity prediction module is further configured to obtain equipment parameter information and production environment information in the production environment data;

the quality periodicity prediction module is further used for determining a digital factor array according to the equipment parameter information and the production environment information;

the quality periodicity prediction module is further used for determining a stateful factor array according to the equipment parameter information and the production environment information;

the quality periodicity prediction module is further configured to input the digitized factor array and the stateful factor array into the preset quality periodicity prediction model to obtain a periodicity prediction result.

10. The product quality prediction system of claim 8, wherein the terminal server is further configured to determine weight distribution information of the product to be predicted according to the type of the product to be predicted and historical production data;

the terminal server is further configured to determine the final prediction result according to the periodic prediction result, the quality trend prediction result, the time proximity prediction result, and the weight distribution information.

Technical Field

The invention relates to the technical field of product quality control, in particular to a product quality prediction method and a product quality prediction system.

Background

Quality management is one of the core contents in a manufacturing execution system, and is the key for enterprises to gain benefits and gain long-term competitive advantages. At present, in the traditional quality control process, the post-control is more, and the quality is controlled by a sampling inspection and statistical process control method, but the method has the problem of control delay and cannot feed back the health state of a product in time according to quality data monitored by a measurement and control system.

Under the background of big data, the quality related data is increased sharply, the relation among the data is more and more complex, dozens or hundreds of processes can be included in the massive multi-source data brought by high informatization, the multi-process manufacturing products related among the processes are more and more common in industrial production, the factors influencing the product quality are increased day by day, and each process can influence the final quality of the product.

The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.

Disclosure of Invention

The invention mainly aims to provide a product quality prediction method and a product quality prediction system, and aims to solve the technical problems of delay of control and low accuracy when the quality is controlled by a post-control and sampling inspection method in the prior art.

In order to achieve the above object, the present invention provides a product quality prediction method, comprising the steps of:

acquiring production environment data, production related data and current production information of a product to be predicted;

predicting the production environment data according to a preset quality periodic prediction model to obtain a periodic prediction result;

predicting the production related data according to a preset quality trend prediction model to obtain a quality trend prediction result;

predicting historical production cycle data of the product to be predicted according to a preset time proximity prediction model to obtain a historical data prediction result;

determining a time proximity prediction result according to the current production information and the historical data prediction result;

and determining a final prediction result of the product to be predicted according to the periodic prediction result, the quality trend prediction result and the time proximity prediction result.

Optionally, after the step of determining a final predicted result of the product to be predicted according to the periodic predicted result, the quality trend predicted result, and the time proximity predicted result, the method further includes:

determining production recommendation information of the product to be predicted according to the final prediction result;

and feeding back the production suggestion information to a production system host so that the production system host judges whether to continue producing the product to be predicted according to the production suggestion information.

Optionally, the step of determining a final prediction result of the product to be predicted according to the periodic prediction result, the quality trend prediction result, and the time proximity prediction result includes:

determining weight distribution information corresponding to the product to be predicted according to the type of the product to be predicted and historical production data;

and determining a final prediction result according to the weight distribution information, the periodic prediction result, the quality trend prediction result and the time proximity prediction result.

Optionally, the step of predicting the production environment data according to a preset quality periodic prediction model to obtain a periodic prediction result includes:

acquiring equipment parameter information and production environment information in the production environment data;

determining a digital factor array according to the equipment parameter information and the production environment information;

determining a stateful factor array according to the equipment parameter information and the production environment information;

and inputting the digital factor array and the state factor array into the preset quality periodic prediction model to obtain a periodic prediction result.

Optionally, the step of predicting the production related data according to a preset quality trend prediction model to obtain a quality trend prediction result includes:

acquiring material information in the production-related data;

preprocessing the material information to obtain a target input array;

and inputting the target input array into the preset quality trend prediction model to obtain a quality trend prediction result.

Optionally, the step of obtaining the production environment data, the production related data, and the current production information of the product to be predicted includes:

and responding to a product quality prediction instruction sent by the production system host, and acquiring production environment data, production related data and current production information of the product to be predicted from a production system database.

Optionally, the method further comprises:

judging whether the prediction model has gradient disappearance or gradient explosion;

when the gradient of the prediction model disappears or the gradient explodes, optimizing the preset model through a residual error network to obtain an optimized target model, and predicting the product quality through the optimized target model;

wherein the prediction models include the quality periodicity prediction model, the preset quality trend prediction model, and the preset temporal proximity prediction model.

In addition, in order to achieve the above object, the present invention further provides a product quality prediction system, which includes a quality periodicity prediction module, a quality trend prediction module, a time proximity prediction module, and a terminal server:

the quality periodicity prediction module is used for predicting the production environment data of the product to be predicted according to a preset quality periodicity prediction model to obtain a periodicity prediction result;

the quality trend prediction module is used for predicting the production related data of the product to be predicted according to a preset quality trend prediction model to obtain a quality trend prediction result;

the time proximity prediction module is used for predicting historical production cycle data according to a preset time proximity prediction model to obtain a historical data prediction result;

the time proximity prediction module is further used for determining a time proximity prediction result according to the current production information of the product to be predicted and the historical data prediction result;

and the terminal server is used for determining a final prediction result of the product to be predicted according to the periodic prediction result, the quality trend prediction result and the time proximity prediction result.

Optionally, the quality periodicity prediction module is further configured to obtain device parameter information and production environment information in the production environment data;

the quality periodicity prediction module is further used for determining a digital factor array according to the equipment parameter information and the production environment information;

the quality periodicity prediction module is further used for determining a stateful factor array according to the equipment parameter information and the production environment information;

the quality periodicity prediction module is further configured to input the digitized factor array and the stateful factor array into the preset quality periodicity prediction model to obtain a periodicity prediction result.

Optionally, the terminal server is further configured to determine weight distribution information of the product to be predicted according to the type of the product to be predicted and historical production data;

the terminal server is further configured to determine the final prediction result according to the periodic prediction result, the quality trend prediction result, the time proximity prediction result, and the weight distribution information.

The method comprises the steps of obtaining production environment data, production related data and current production information of a product to be predicted; predicting production environment data according to a preset quality periodic prediction model to obtain a periodic prediction result; predicting production related data according to a preset quality trend prediction model to obtain a quality trend prediction result; predicting historical production cycle data of a product to be predicted according to a preset time proximity prediction model to obtain a historical data prediction result; determining a time proximity prediction result according to the current production information and the historical data prediction result; and determining the final prediction result of the product to be predicted according to the periodic prediction result, the quality trend prediction result and the time proximity prediction result. Compared with the existing mode of detecting the quality of the product after the product is manufactured, the mode provided by the invention can be used for detecting the product in the production process, and the timeliness and the accuracy of product quality detection are improved. The invention also considers the characteristic of large data quantity in the prior stage, and compared with the problem that the prior quality prediction model can not process data in large scale and large sample size, the whole model is divided into three submodels, and each model only needs to screen the required data for calculation and can process a large amount of data in a large-scale production system.

Drawings

FIG. 1 is a schematic structural diagram of a product quality prediction device of a hardware operating environment according to an embodiment of the present invention;

FIG. 2 is a flowchart illustrating a first embodiment of a method for predicting product quality according to the present invention;

FIG. 3 is a flowchart illustrating a second embodiment of the product quality prediction method according to the present invention;

FIG. 4 is a flowchart illustrating a third embodiment of a method for predicting product quality according to the present invention;

fig. 5 is a block diagram illustrating a first embodiment of a product quality prediction system according to the present invention.

The implementation, functional features and advantages of the objects of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a product quality prediction device of a hardware operating environment according to an embodiment of the present invention.

As shown in fig. 1, the product quality prediction apparatus may include: a processor 1001, such as a Central Processing Unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display screen (Display), an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a Wireless interface (e.g., a Wireless-Fidelity (WI-FI) interface). The Memory 1005 may be a high-speed Random Access Memory (RAM) or a Non-Volatile Memory (NVM), such as a disk Memory. The memory 1005 may alternatively be a storage device separate from the processor 1001.

Those skilled in the art will appreciate that the configuration shown in fig. 1 does not constitute a limitation of the product quality prediction apparatus and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.

As shown in fig. 1, a memory 1005, which is a storage medium, may include therein an operating system, a data storage module, a network communication module, a user interface module, and a product quality prediction program.

In the product quality prediction apparatus shown in fig. 1, the network interface 1004 is mainly used for data communication with a network server; the user interface 1003 is mainly used for data interaction with a user; the processor 1001 and the memory 1005 in the product quality prediction apparatus of the present invention may be provided in the product quality prediction apparatus, which calls the product quality prediction program stored in the memory 1005 through the processor 1001 and executes the product quality prediction method provided by the embodiment of the present invention.

Based on the above product quality prediction device, an embodiment of the present invention provides a product quality prediction method, and referring to fig. 2, fig. 2 is a flowchart illustrating a first embodiment of the product quality prediction method according to the present invention.

In this embodiment, the product quality prediction method includes the following steps:

step S10: and acquiring production environment data, production related data and current production information of the product to be predicted.

It should be noted that the execution main body of the embodiment may be a computing service device with data processing, network communication, and program running functions, such as a tablet computer, a personal computer, an upper computer, or an electronic device or a product quality prediction device capable of implementing the above functions. The present embodiment and the following embodiments will be described below by taking the product quality prediction apparatus as an example.

It should be noted that the product to be predicted may be a product whose quality needs to be predicted in the production process, and the production environment data may be equipment information, production environment information, and the like used in the production process of the product, for example, the running time, the service life, the precision, the error rate, the temperature of the production site, the light, the cleanliness, and the like of the equipment. The production-related data may be material information of the product, such as composition, weight, shelf life, action, and performance of the material. The current production information may be status information of a current product. E.g. whether it is in production, the cycle of production, the stage in the production cycle in which it is currently located, etc.

Further, in order to make the quality prediction result more accurate, the step of obtaining the production environment data, the production related data and the current production information of the product to be predicted includes: and responding to a product quality prediction instruction sent by the production system host, and acquiring production environment data, production related data and current production information of the product to be predicted from the production system database.

In specific implementation, when a product quality prediction instruction sent by a production system host is received, production environment data, production related data and current production information of a product to be predicted are obtained from a production system database. The production system host may be a host in charge of managing and controlling the whole production process, for example, may manage and control information on whether a product continues to be produced, when to start production, and the like. The production system database can be used for storing various data generated in the production process of the product, equipment information, environment information and the like of production equipment corresponding to the product.

Step S20: and predicting the production environment data according to a preset quality periodic prediction model to obtain a periodic prediction result.

It should be noted that the preset quality periodic prediction model may be a neural network model obtained by training sample data in advance, and may be a convolutional neural network or a probabilistic neural network. For some production systems, due to the influence of factors such as production environment, raw materials and equipment, the calculation process of the convolutional neural network is complicated, and the calculation efficiency is reduced, so that the product quality prediction result is lost or timeliness is reduced.

It should be understood that, when the production environment data is predicted according to the preset quality periodic prediction model, the periodic prediction result may be obtained by converting the production environment data into an input form recognizable by the preset quality periodic prediction model and inputting the input form into the preset quality periodic prediction model to obtain an output result of the preset quality periodic prediction model.

Step S30: and predicting the production related data according to a preset quality trend prediction model to obtain a quality trend prediction result.

It should be noted that the preset quality trend prediction model may be a neural network model obtained through sample data training in advance, and may be a convolutional neural network or a probabilistic neural network.

Further, in order to make the quality trend prediction result more accurate, the step of predicting the production related data according to a preset quality trend prediction model to obtain a quality trend prediction result includes: acquiring material information in the production-related data; preprocessing the material information to obtain a target input array; and inputting the target input array into the preset quality trend prediction model to obtain a quality trend prediction result.

The material information may be the quality of the material itself, the composition of the material, the storage time of the material, the function and performance of the material in the product, and the like. The preprocessing of the material information can be normalization preprocessing of data, for example, data type judgment of collected data, rating of data to be rated, state judgment of non-digital data and digitization realization are carried out, and after all data are collected, the data are uniformly input into a model in an array format. For example, by rating raw materials, giving ratings collectively, similar settings can be made as follows: the '1' represents excellent ', the' 2 'represents good', the '3' represents qualified ', the' 4 'represents unqualified', other product quality influencing factors can also refer to a material rating setting mode, the digital data of the data which does not need to be rated can be directly adopted, finally, the rating results or the digital data of all the factors are combined into an array according to a preset arrangement sequence, the array format is input into a model, and the array format can still be output after calculation. And determining a quality trend prediction result according to the output according to a self-defined output form and a rule corresponding to the result during model training. For example, if the output b is [0,0,. 0,1] indicating failure, and b is [0,0,. 1,0] indicating pass, the result may be confirmed from the output of the model according to a preset rule of correspondence between the output and the result.

Step S40: and predicting historical production cycle data of the product to be predicted according to a preset time proximity prediction model to obtain a historical data prediction result.

It should be noted that the preset time proximity prediction model may be a neural network model obtained by training sample data in advance, and may be a convolutional neural network or a probabilistic neural network. The historical production cycle data may be intervals throughout the production cycle where different stages of the historical product were in production and corresponding data, for example, the production process is modeled as a [0,1] interval, with 0 representing that the product did not start production and 1 representing that production was complete. And then recording the position of the sampling point of the product in the whole production period and real-time production data corresponding to the product of the sampling point according to the real-time state of the production process. The historical data prediction result can be the position of the product in the whole production cycle at different stages and corresponding production data when the product is at the position according to a large amount of historical data, for example, the product is not started to produce and is represented by 0, the production completion is 1, and the product is produced to half and is 0.5. The production data corresponding to the products are also different between different zones, e.g. 0, 0.5, 1. The production interval in which the product is located may also be expressed in percentage or other forms, and the embodiment is not limited herein.

Step S50: and determining a time proximity prediction result according to the current production information and the historical data prediction result.

It should be noted that the current production information may be the current production state or stage of the product to be predicted and real-time data generated during production of the product. Determining the time proximity prediction result according to the current production information and the historical data prediction result may be that the position of the product to be predicted in the whole production cycle is determined according to the current production state of the product to be predicted, historical data corresponding to the position of the product to be predicted in the whole production cycle in the historical data prediction result is obtained, and the historical data is compared with the current real-time data of the product to be predicted to obtain the time proximity prediction result. And other influence factors corresponding to the current sampling point of the product to be predicted can be acquired, the current real-time data of the product to be predicted is corrected according to the other influence factors, and then compared with historical data in a historical data prediction result, whether the final result of the product is superior to the product quality of a historical node or not is judged, if the final result of the product is superior to the product quality of the historical node, the real-time data of the sampling point is recorded, and parameters are set and updated, so that the quality and the product prediction accuracy during the production of subsequent products are improved.

Step S60: and determining a final prediction result of the product to be predicted according to the periodic prediction result, the quality trend prediction result and the time proximity prediction result.

Further, in order to better control the quality of the product during production, after the step of determining the final prediction result of the product to be predicted according to the periodic prediction result, the quality trend prediction result, and the time proximity prediction result, the method further includes: determining production recommendation information of the product to be predicted according to the final prediction result; and feeding back the production suggestion information to a production system host so that the production system host judges whether to continue producing the product to be predicted according to the production suggestion information.

It should be noted that the final prediction result may be a current production quality result of the product to be predicted, which is determined according to the periodic prediction result, the quality trend prediction result, and the time proximity prediction result, and may include quality information in current production of the product to be predicted, for example: the method comprises the steps of determining deviation information of real-time data of a current product to be predicted and historical products according to a time proximity prediction result, so that the quality of the product is reduced, obtaining product quality problems caused by raw materials of the current product according to a quality trend prediction result, and the like, and grading the prediction result, wherein the final prediction result of the product to be predicted is visually represented by using '1' for 'excellent', '2' for 'good', '3' for 'qualified', '4' for 'unqualified', and the like. The production recommendation information may be information on whether to continue production or redo, etc. determined according to the final prediction result, for example, for a product with a prediction result graded as "qualified" or "unqualified", recommendation information like "recommend abort", "recommend redo", etc. is provided; for products with the product prediction grades of 'excellent' and 'good', the recommendation information of 'good product quality prediction result, normal production' and the like is given. And feeding back the production suggestion information to a production system host so that the production system host judges whether to continue producing the product to be predicted according to the production suggestion information.

Further, in order to avoid the problem of gradient disappearance or gradient explosion when the model is used for prediction, the method further comprises: judging whether the prediction model has gradient disappearance or gradient explosion; when the gradient of the prediction model disappears or the gradient explodes, the preset model is optimized through a residual error network to obtain an optimized target model, and the quality of the product is predicted through the optimized target model; wherein the prediction models include the quality periodicity prediction model, the preset quality trend prediction model, and the preset temporal proximity prediction model.

It should be understood that the identity mapping residual network ResNet was proposed in 2015. The residual block consists of 2 convolutional layers, 1 jump connection, BN and an excitation function, the hidden layer of ResNet contains 16 residual blocks, and the residual block is constructed in the following mode:

(7X 7). times.3X 64 convolutional layers (step size 2, no padding, ReLU, BN), 3X 3 maximal pooling (step size 2, same padding)

3 residual blocks: 3X 64 convolutional layers (step 1, no padding, ReLU, BN), 3X 64 convolutional layers (step 1, no padding)

1 residual block: 3X 64X 128 (step size of 2, no padding, ReLU, BN), 3X 128 (step size of 1, no padding, ReLU, BN)

3 residual blocks: 3X 128 (step size 1, no padding, ReLU, BN), 3X 128 (step size 1, no padding, ReLU, BN)

1 residual block: 3X 128X 256 (step size of 2, no padding, ReLU, BN), 3X 256 (step size of 1, no padding, ReLU, BN)

5 residual blocks: 3X 256 (step size 1, no padding, ReLU, BN), 3X 256 (step size 1, no padding, ReLU, BN)

1 residual block: 3X 256X 512 (step size of 2, no padding, ReLU, BN), 3X 512 (step size of 1, no padding, ReLU, BN)

2 residual blocks: 3X 512 (step size 1, no padding, ReLU, BN), 3X 512 (step size 1, no padding, ReLU, BN)

Global mean pooling, 1 fully connected layer, number of neurons 1000.

In the embodiment, the use of ResNet can effectively avoid the problem of gradient disappearance caused by a neural network. Because the input of the neural network needs to perform feature extraction on data, a plurality of convolution kernels are needed in a convolution layer of the convolution network, and each element forming the convolution kernels corresponds to a weight coefficient and an offset value, so that each submodel can quickly and accurately extract the needed data. The definition for the convolutional layer parameters is: the RGB image is filled by 0 in the convolution kernel, where the convolution kernel is specified as a maximum (since the features to be extracted are only complex), and the convolution step is defined as 1 to ensure the accuracy of extracting data, but to reduce the efficiency to some extent.

The embodiment acquires production environment data, production related data and current production information of a product to be predicted; predicting production environment data according to a preset quality periodic prediction model to obtain a periodic prediction result; predicting production related data according to a preset quality trend prediction model to obtain a quality trend prediction result; predicting historical production cycle data of a product to be predicted according to a preset time proximity prediction model to obtain a historical data prediction result; determining a time proximity prediction result according to the current production information and the historical data prediction result; and determining a final prediction result of the product to be predicted according to the periodic prediction result, the quality trend prediction result and the time proximity prediction result. Compared with the existing mode of detecting the quality of the product after the product is manufactured, the mode of the embodiment can detect the product in the production process of the product, and the timeliness and the accuracy of product quality detection are improved. In addition, the real-time data is used as model input and compared with historical data, the product quality can be predicted in time, real-time feedback is achieved, and the product quality is corrected.

Referring to fig. 3, fig. 3 is a flowchart illustrating a product quality prediction method according to a second embodiment of the present invention.

Based on the first embodiment, in this embodiment, the step S60 includes:

step S601: and determining the weight distribution information corresponding to the product to be predicted according to the type of the product to be predicted and historical production data.

It should be noted that the weight distribution information may be weights of the periodic prediction result, the quality trend prediction result, and the time proximity prediction result when determining the final prediction result, and the larger the weight is, the larger the influence on the final prediction result is. After receiving the three prediction results, the product quality prediction device considers the difference of the influence factors and the influence degrees of each product according to different product types, combines historical data in the production system (the data needs certain time and experience accumulation), and sets corresponding weights wi (0< wi <1, i is 1,2,3) for the three results respectively, and w1+ w2+ w3 is 1.

In a specific implementation, for example, when a product is manufactured with a constant material, the weight value may be assigned to 0 for the prediction result of predicting the material, when a product is manufactured, the production cycle and each stage need to be strictly controlled, otherwise, the weight value corresponding to the temporal proximity prediction result may be set to be larger when the quality is greatly influenced.

Step S602: and determining a final prediction result according to the weight distribution information, the periodic prediction result, the quality trend prediction result and the time proximity prediction result.

It should be understood that, the determining the final predicted result according to the weight distribution information, the periodic predicted result, the quality trend predicted result and the time proximity predicted result may be determining the influence degree of each result on the final predicted result according to the weight value corresponding to each result, and determining the final predicted result according to the influence degree of each result on the final predicted result and the predicted result thereof. Or scoring the periodic prediction result, the quality trend prediction result and the time proximity prediction result respectively, calculating products of the scores and corresponding weight values, adding the products to obtain a prediction result score, and determining the final prediction result according to the prediction result score.

The embodiment determines the weight distribution information corresponding to the product to be predicted according to the type of the product to be predicted and historical production data, and determines the final prediction result according to the weight distribution information, the periodic prediction result, the quality trend prediction result and the time proximity prediction result. In this embodiment, the different degrees of influence of different influence factors on each product are considered, and in combination with the type of the product to be predicted in the production system and the historical production data, corresponding weight values are respectively set for the periodic prediction result, the quality trend prediction result, and the time proximity prediction result, where the historical production data requires a certain time and experience accumulation, and the final prediction result is determined according to the periodic prediction result, the quality trend prediction result, the time proximity prediction result, and the respective corresponding weight values. The final prediction result of the product is more accurate.

Referring to fig. 4, fig. 4 is a flowchart illustrating a product quality prediction method according to a third embodiment of the present invention.

Based on the foregoing embodiments, in this embodiment, the step S20 includes:

step S201: and acquiring equipment parameter information and production environment information in the production environment data.

It should be noted that the device parameter information may be information of real-time running time, service life, precision, historical error rate of the device, and the like of the device. The production environment information may be information of site temperature, humidity, illumination, cleanness, etc. at the time of production.

Step S202: and determining a digital factor array according to the equipment parameter information and the production environment information.

It should be noted that the digitization factor array may be formed by digitizing each parameter that can be represented digitally and forming an array, for example, parameter information such as temperature, humidity, equipment error rate, operation time, etc. that is represented digitally, and forming an array of parameter values as the digitization factor array.

Step S203: and determining a stateful factor array according to the equipment parameter information and the production environment information.

It should be noted that the state factor array may be an array in which each parameter that can be represented by a state is represented by a specific value.

In specific implementation, for example, "1" represents "new device (total usage time is less than hours)", "2" represents "normal device (between new and old devices, total usage time is between preset hours)", "3" represents "old device (total usage time is more than hours)", device operation time is the same as above, and is distinguished as continuous operation time of device in short time, device precision can be set to "ultra-high precision", "normal", "fuzzy processing", etc. in natural number increase, and the "ultra-high precision", "normal", "fuzzy processing", etc. are indicated by numbers "0" "1" "2", etc., such as illumination, can be set to "-1" representing "illumination", and "-2" representing "no illumination", and devices in which voltage or other states are stable need to be considered, it may be set that "-1" represents "stable" and "-2" represents "unstable". Other factors may be set with reference to the above example factors. The embodiment is not limited herein. In addition, if a product is not influenced by a specific factor, the element representing the influencing factor can be input by using '0', and finally, the output is set by referring to the parameter of the convolutional network pooling layer, and the output result can be similar.

Step S204: and inputting the digital factor array and the state factor array into the preset quality periodic prediction model to obtain a periodic prediction result.

It should be noted that the preset quality periodic prediction model may be a neural network model obtained by training sample data in advance, and may be a convolutional neural network or a probabilistic neural network.

It should be understood that the result form of the output result of the preset quality periodic prediction model may be an array, a character string or other forms, after the output result of the preset quality periodic prediction model is obtained, it is necessary to compare the output during model training with the result in the sample to obtain a rule between the output and the result, and then analyze the output in the model according to the rule to obtain the prediction result.

The embodiment acquires the equipment parameter information and the production environment information in the production environment data; determining a digital factor array according to the equipment parameter information and the production environment information; determining a stateful factor array according to the equipment parameter information and the production environment information; and inputting the digital factor array and the state factor array into the preset quality periodic prediction model to obtain a periodic prediction result. In the embodiment, the equipment parameter information and the production environment information in the production environment data are comprehensively considered, and the equipment parameter information and the production environment information in the production environment data are processed into an input form which can be processed by a preset quality periodic prediction model and input to obtain a periodic prediction result, so that the periodic prediction result is more accurate and comprehensive.

Referring to fig. 5, fig. 5 is a block diagram illustrating a first embodiment of a product quality prediction system according to the present invention.

As shown in fig. 5, the product quality prediction system according to the embodiment of the present invention includes a quality periodicity prediction module 10, a quality trend prediction module 20, a temporal proximity prediction module 30, and a terminal server 40:

the quality periodicity prediction module 10 is configured to predict production environment data of a product to be predicted according to a preset quality periodicity prediction model to obtain a periodicity prediction result;

the quality trend prediction module 20 is configured to predict production-related data of the product to be predicted according to a preset quality trend prediction model, so as to obtain a quality trend prediction result;

the time proximity prediction module 30 is configured to predict historical production cycle data according to a preset time proximity prediction model, and obtain a historical data prediction result;

the time proximity prediction module 30 is further configured to determine a time proximity prediction result according to the current production information of the product to be predicted and the historical data prediction result;

the terminal server 40 is configured to determine a final prediction result of the product to be predicted according to the periodic prediction result, the quality trend prediction result, and the time proximity prediction result.

The embodiment comprises a quality periodicity prediction module, a quality trend prediction module, a time proximity prediction module and a terminal server: the quality periodicity prediction module is used for predicting the production environment data of the product to be predicted according to a preset quality periodicity prediction model to obtain a periodicity prediction result; the quality trend prediction module is used for predicting the production related data of the product to be predicted according to a preset quality trend prediction model to obtain a quality trend prediction result; the time proximity prediction module is used for predicting historical production cycle data according to a preset time proximity prediction model to obtain a historical data prediction result; the time proximity prediction module is further used for determining a time proximity prediction result according to the current production information of the product to be predicted and the historical data prediction result; the terminal server is used for determining a final prediction result of the product to be predicted according to the periodic prediction result, the quality trend prediction result and the time proximity prediction result. For the mode that detects its quality after current product manufacture is accomplished, the above-mentioned mode of this embodiment can just detect it in product production process, improves the ageing and the accuracy that product quality detected

It should be noted that the above-described work flows are only illustrative, and do not limit the scope of the present invention, and in practical applications, a person skilled in the art may select some or all of them according to actual needs to implement the purpose of the solution of the embodiment, and the present invention is not limited herein.

In addition, the technical details that are not described in detail in this embodiment may refer to the parameter operation method provided in any embodiment of the present invention, and are not described herein again.

Based on the first embodiment of the product quality prediction system of the present invention, a second embodiment of the product quality prediction system of the present invention is provided.

In this embodiment, the quality periodicity prediction module 10 is further configured to obtain device parameter information and production environment information in the production environment data;

the quality periodicity prediction module 10 is further configured to determine a digital factor array according to the equipment parameter information and the production environment information;

the quality periodicity prediction module 10 is further configured to determine a stateful factor array according to the equipment parameter information and the production environment information;

the quality periodicity prediction module 10 is further configured to input the digitized factor array and the stateful factor array into the preset quality periodicity prediction model to obtain a periodicity prediction result.

Further, the terminal server 40 is further configured to determine weight distribution information of the product to be predicted according to the type of the product to be predicted and historical production data;

the terminal server 40 is further configured to determine the final prediction result according to the periodic prediction result, the quality trend prediction result, the time proximity prediction result, and the weight distribution information.

Other embodiments or specific implementation manners of the product quality prediction system of the present invention may refer to the above-mentioned embodiments of the methods, and are not described herein again.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.

The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better embodiment. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g. a rom/ram, a magnetic disk, an optical disk) and includes instructions for enabling a terminal device (e.g. a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the present specification and drawings, or used directly or indirectly in other related fields, are included in the scope of the present invention.