CN116203898A - Production line monitoring system and method based on digital twin technology - Google Patents
Production line monitoring system and method based on digital twin technology Download PDFInfo
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- G05B19/41875—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM] characterised by quality surveillance of production
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Abstract
The invention is applicable to the field of computers, and provides a production line monitoring system and a monitoring method based on a digital twin technology, wherein the method comprises the following steps: acquiring first detection information of a plurality of set bits in a production line, wherein the set bits comprise detection bits and operation bits; if the detection information of at least two non-similar setting positions is abnormal according to the first detection information, acquiring position circulation information of the workpiece and positioning possible abnormal setting positions; judging whether the workpiece is positioned in an error range corresponding to the theoretical circulation position according to the position circulation information of the workpiece; if yes, the comprehensive detection equipment is instructed to carry out at least two types of detection on the workpiece so as to acquire second detection information containing at least two types, and the method has the beneficial effects that: the method can accurately and rapidly judge the misalignment of the possible abnormal setting position, and is convenient to replace or recalibrate target equipment in time, so that the normal production operation of the subsequent production line is ensured.
Description
Technical Field
The invention belongs to the field of computers, and particularly relates to a production line monitoring system and a monitoring method based on a digital twin technology.
Background
The production line refers to a route which is formed by a series of production activities such as processing, conveying, assembling and checking from the raw materials entering a production site, and the basic principle is that a repeated production process is decomposed into a plurality of subprocesses, the former subprocess creates execution conditions for the next subprocess, and each process can be performed simultaneously with other subprocesses.
In the prior art, each device and each production link in the production line are monitored through a sensor, and simulation display is carried out on some devices and production links according to data obtained through monitoring, so that more visual display results are obtained, and corresponding processing is carried out according to corresponding display results.
However, according to the prior art, when a certain link or equipment fails, according to the display result, a plurality of factors affecting the production line need to be manually examined one by one, so that the production efficiency is affected.
Disclosure of Invention
The embodiment of the invention aims to provide a production line monitoring system and a monitoring method based on a digital twin technology, which aim to solve the problems in the background technology.
The embodiment of the invention is realized in such a way that, on one hand, the production line monitoring method based on the digital twin technology comprises the following steps:
acquiring first detection information of a plurality of set bits in a production line, wherein the set bits comprise detection bits and operation bits;
if the detection information of at least two non-similar setting positions is abnormal according to the first detection information, acquiring position circulation information of the workpiece and positioning possible abnormal setting positions;
judging whether the workpiece is positioned in an error range corresponding to the theoretical circulation position according to the position circulation information of the workpiece;
if yes, the comprehensive detection equipment is instructed to carry out at least two types of detection on the workpiece so as to obtain second detection information containing at least two types, wherein the types of the second detection information are preferentially determined according to set conditions, the set conditions comprise fault indexes which are possibly positioned abnormally in a digital twin model, and the higher the fault indexes are, the higher the priority of the second detection information of the corresponding type is;
and comparing the first detection information with the second detection information to obtain a comparison result, and judging that the corresponding possible abnormal setting bit has working misalignment when the comparison result shows that the detection information of the possible abnormal setting bit is inconsistent.
As a further aspect of the present invention, after locating the possible anomaly setting bit, the method further includes:
and issuing a detection pause instruction to the detection equipment and/or the operation equipment corresponding to the abnormal setting bit so as to pause the detection and/or the operation until the detection equipment and/or the operation equipment are instructed to resume the detection and/or the operation according to the pause resume instruction.
As still further aspects of the present invention, the method further includes:
when the detection information abnormality of the corresponding set bit is judged according to the first detection information, the detection information abnormality comprises at least one of workpiece detection parameter abnormality and working parameter abnormality, and the next step is executed;
and distinguishing the setting bits corresponding to the detection information anomalies according to distinguishing features, wherein the distinguishing features comprise segmentation distances which are divided according to the hierarchical working conditions.
As still further aspects of the present invention, the determining whether the workpiece is located within an error range corresponding to the theoretical circulation position according to the position circulation information of the workpiece specifically includes:
acquiring a circulation track of a workpiece corresponding to each target station, wherein the target stations comprise possible abnormal setting positions;
acquiring equipment action image information of a target station in the action time of the target equipment, and carrying out framing processing on the equipment action image information to generate a plurality of equipment action images;
identifying target action tracks of target equipment in a plurality of equipment action images, and identifying theoretical detection distribution ranges of the target equipment according to the target action tracks;
and judging whether the theoretical detection distribution range in the same period coincides with the circulation track.
As a further aspect of the present invention, the method further includes:
if the theoretical detection distribution range in the same period and the circulation track meet the superposition condition, judging that the workpiece is positioned in an error range corresponding to the theoretical circulation position;
and if the theoretical detection distribution range in the same period and the circulation track do not meet the superposition condition, judging that the workpiece is not positioned in an error range corresponding to the theoretical circulation position.
As a further aspect of the present invention, the digital twin model is established according to historical production monitoring parameter conditions, wherein the historical production monitoring parameter conditions comprise at least one of environmental conditions and service life conditions, and the method further comprises substituting the associated parameters of the current possible abnormal setting position into the digital twin model to generate a fault index of the possible abnormal setting position, and the associated parameters comprise at least one of environmental conditions and service life conditions.
As a further aspect of the present invention, the method further includes:
when the workpiece is judged not to be positioned in the error range corresponding to the theoretical circulation position, the transmission of the workpiece is judged to have faults, and transmission calibration prompt information is sent out.
As a further aspect of the present invention, the method further includes:
and if the first detection information and the second detection information are displayed to be inconsistent according to the comparison result, and if the first detection information is blank information, judging that the corresponding possible abnormal bit has working faults, and sending out fault prompt.
As a further aspect of the present invention, in another aspect, a line monitoring system based on digital twinning technology, the system comprising:
the detection information acquisition module is used for: acquiring first detection information of a plurality of set bits in a production line, wherein the set bits comprise detection bits and operation bits;
the abnormality identification module is used for: if the detection information of at least two non-similar setting positions is abnormal according to the first detection information, acquiring position circulation information of the workpiece and positioning possible abnormal setting positions;
the circulation abnormity judging module is used for: judging whether the workpiece is positioned in an error range corresponding to the theoretical circulation position according to the position circulation information of the workpiece;
the condition detection module is used for: if the workpiece is judged to be positioned in an error range corresponding to the theoretical circulation position according to the position circulation information of the workpiece, the comprehensive detection equipment is instructed to perform at least two types of detection on the workpiece so as to obtain second detection information containing at least two types, the types of the second detection information are preferentially determined according to set conditions, the set conditions comprise fault indexes possibly abnormally positioned in a digital twin model, and the higher the fault indexes are, the higher the priority of the second detection information of the corresponding type is;
the comparison judging module is used for: and comparing the first detection information with the second detection information to obtain a comparison result, and judging that the corresponding possible abnormal setting bit has working misalignment when the comparison result shows that the detection information of the possible abnormal setting bit is inconsistent.
According to the production line monitoring system and the monitoring method based on the digital twin technology, through acquiring first detection information of a plurality of set positions in the production line, the set positions comprise detection positions and operation positions, if the detection information of at least two non-similar set positions is identified to be abnormal according to the first detection information, position circulation information of a workpiece is acquired, and the corresponding possible abnormal set positions are positioned, whether the workpiece is located in an error range corresponding to a theoretical circulation position is judged according to the position circulation information of the workpiece, if yes, the comprehensive detection equipment is instructed to perform at least two types of detection on the workpiece, so that second detection information comprising at least two types is acquired, the types of the second detection information are determined preferentially according to set conditions, the set conditions comprise fault indexes of the possible abnormal set positions in the digital twin model, comparison results of the first detection information and the second detection information are acquired, when the comparison results show that the detection information of the possible abnormal set positions is inconsistent, the corresponding possible abnormal set positions are judged to be in working misalignment, the possible abnormal set positions can be accurately and rapidly judged, the possible abnormal set positions are ensured to be aligned, or the production line can be replaced conveniently and normally in time, and production is convenient to replace and production line is calibrated.
Drawings
FIG. 1 is a main flow chart of a method for monitoring a production line based on digital twinning technology.
FIG. 2 is a flow chart of a method for acquiring at least two non-proximate set bits in a process line monitoring method based on digital twinning technology.
Fig. 3 is a flowchart of a method for monitoring a production line based on a digital twin technology, wherein the method determines whether a workpiece is located in an error range corresponding to a theoretical circulation position according to position circulation information of the workpiece.
FIG. 4 is a flow chart of a method for monitoring a production line based on digital twinning technology to determine whether a workpiece is within an error range corresponding to a theoretical circulating position.
Fig. 5 is a main structural diagram of a production line monitoring system based on digital twin technology.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Specific implementations of the invention are described in detail below in connection with specific embodiments.
The invention provides a production line monitoring system and a monitoring method based on a digital twin technology, which solve the technical problems in the background technology.
As shown in fig. 1, a main flow chart of a production line monitoring method based on a digital twin technology according to an embodiment of the present invention is provided, where the production line monitoring method based on the digital twin technology includes:
step S10: acquiring first detection information of a plurality of set bits in a production line, wherein the set bits comprise detection bits and operation bits; that is, the first detection information may include defect detection after the operation or detection of whether the operation is performed;
step S11: if the detection information of at least two non-similar setting positions is abnormal according to the first detection information, acquiring position circulation information of the workpiece and positioning possible abnormal setting positions;
when two or more detection information anomalies appear in the production line, indicating that at least one of workpiece detection parameter anomalies and working parameter anomalies possibly exist in at least two set positions; because there is a high probability that the workpiece is transferred between stations when the plurality of setting positions are abnormal, the workpiece cannot reach the corresponding stations according to the setting route or the setting time, speed and the like, or the identification of the setting positions is deviated, so that the positions of the workpiece cannot be accurately identified, and the abnormal detection information of more setting positions can be caused; furthermore, in order to eliminate the interference (the interference factors are not much different under similar conditions) caused by the same factors possibly caused by accidental failure under similar conditions, the subsequent analysis and judgment of the abnormal setting position are more reliable, and non-similar setting positions are selected;
step S12: judging whether the workpiece is positioned in an error range corresponding to the theoretical circulation position according to the position circulation information of the workpiece;
step S13: if yes, the comprehensive detection equipment is instructed to carry out at least two types of detection on the workpiece so as to obtain second detection information containing at least two types, wherein the types of the second detection information are preferentially determined according to set conditions, the set conditions comprise fault indexes which are possibly positioned abnormally in a digital twin model, and the higher the fault indexes are, the higher the priority of the second detection information of the corresponding type is;
a digital twin model is a virtual model of a physical object that spans the life cycle of the object and uses real-time data sent from sensors on the object to simulate behavior and monitor operation; in another case, the type of the second detection information is determined according to manual input, and the type of the second detection information can be determined manually according to failure experience; for example, the straightness detection of the inner hole of the circular tube, the roughness detection of the working surface and the like;
in the step S13, the factor that the corresponding station cannot be reached according to the set route, the set time, the speed, etc., or the deviation exists in the identification of the set position, that is, the factor causing the abnormality of the detected information may be derived from the corresponding target device; at a certain position, such as the tail end, of the production line, a relatively integrated comprehensive detection device is arranged to carry out at least two types of detection on the workpiece, namely, the two conditions possibly corresponding to the at least two set positions are corresponding, and the type of the second detection information can be preferentially determined according to the fault index of the possibly abnormal set position in the digital twin model, so that a valuable comparison result can be obtained on the basis of detecting the second detection information of fewer types as much as possible;
step S14: and comparing the first detection information with the second detection information to obtain a comparison result, and judging that the corresponding possible abnormal setting bit has working misalignment when the comparison result shows that the detection information of the possible abnormal setting bit is inconsistent. If the detected information of a certain possible abnormal setting position is inconsistent, indicating that the corresponding possible abnormal setting position of the abnormal setting position is in working misalignment, and not other reasons, such as work piece conveying problems; thus, the corresponding target equipment should be replaced or recalibrated to ensure proper production operation of the subsequent production line.
In the application, the first detection information of a plurality of setting bits in the production line is obtained, the setting bits comprise detection bits and operation bits, if the detection information of at least two non-similar setting bits is identified to be abnormal according to the first detection information, the position circulation information of the workpiece is obtained, the possible abnormal setting bits are located, whether the workpiece is located in an error range corresponding to the theoretical circulation position is judged according to the position circulation information of the workpiece, if yes, the comprehensive detection equipment is instructed to perform at least two types of detection on the workpiece, so as to obtain second detection information comprising at least two types, the types of the second detection information are determined preferentially according to setting conditions, the setting conditions comprise fault indexes of the possible abnormal setting bits in the digital twin model, the comparison results of the first detection information and the second detection information are obtained, when the comparison results show that the detection information of the possible abnormal setting bits is inconsistent, the corresponding possible abnormal setting bits are judged to have working misalignment, the possible abnormal setting bits can be accurately and rapidly replaced based on the digital twin technology, the rapid replacement of the possible abnormal setting bits can be conveniently guaranteed, or the subsequent production line can be rapidly calibrated, and the normal operation of the production line can be recovered according to the normal operation can be judged.
As a preferred embodiment of the present invention, after locating the possible anomaly setting bit, the method further comprises:
step S20: and issuing a detection pause instruction to the detection equipment and/or the operation equipment corresponding to the abnormal setting bit so as to pause the detection and/or the operation until the detection equipment and/or the operation equipment are instructed to resume the detection and/or the operation according to the pause resume instruction.
It can be understood that the maintenance operation can be conveniently performed by issuing the detection suspension instruction; and the detection equipment and/or the operation equipment can be instructed to resume detection and/or operation according to the pause resume instruction, so that the automation degree of the production line monitoring is improved.
As shown in fig. 2, as a preferred embodiment of the present invention, the method further includes:
step S30: when the detection information abnormality of the corresponding set bit is judged according to the first detection information, the detection information abnormality comprises at least one of workpiece detection parameter abnormality and working parameter abnormality, and the next step is executed;
step S31: and distinguishing the setting bits corresponding to the detected information anomalies according to distinguishing features, wherein the distinguishing features comprise segmentation distances divided according to the hierarchical working conditions so as to obtain at least two non-similar setting bits. For example, it is distinguished by an equal temperature difference distribution at the time of operation or by a noise environment at the time of operation; the set bits corresponding to the abnormal detection information are distinguished to eliminate the interference caused by the same factors possibly caused by accidental failure under similar conditions, so that the subsequent analysis and judgment of the abnormal set bits are more reliable.
That is, when at least one of the abnormality of the workpiece detection parameter and the abnormality of the operation parameter occurs, that is, abnormality of the detection information corresponding to the set bit is determined, and further, in order to eliminate the influence of the hierarchical operation condition on the continuous set bit, the set bit corresponding to the abnormality of the detection information is discriminated according to the discrimination feature, so that at least two non-similar set bits can be identified.
As shown in fig. 3, as a preferred embodiment of the present invention, the determining whether the workpiece is located within an error range corresponding to the theoretical circulation position according to the position circulation information of the workpiece specifically includes:
step S121: acquiring a circulation track of a workpiece corresponding to each target station, wherein the target stations comprise possible abnormal setting positions;
step S122: acquiring equipment action image information of a target station in the action time of the target equipment, and carrying out framing processing on the equipment action image information to generate a plurality of equipment action images; the number of frames or frame rate of the frames can be processed according to the maximum value or the common divisor of the maximum value, for example, 60fps, and the transmission speed of the production line is 2m/s;
frame number, i.e., the number of pictures transmitted in 1 second, the frame rate is the number of times a picture can be refreshed per second, typically expressed in fps;
step S123: identifying target action tracks of target equipment in a plurality of equipment action images, and identifying theoretical detection distribution ranges of the target equipment according to the target action tracks;
step S124: and judging whether the theoretical detection distribution range in the same period coincides with the circulation track.
It should be understood that under the condition of determining the target station, first, the device motion image information of the target station, that is, the motion image information of the target device, is determined within the motion time of the target device, and when the target device is in motion, the motion images of the target device are synchronously recorded, and according to practical application, the target device generally has a working section when preparing to process or detecting the processing condition of a workpiece, such as processing precision, that is, there is a preparation time for removing the working section, and the motion track of the target device is generally matched with the working section, so that whether the theoretical detection distribution range in the same period coincides with the circulation track is judged, and whether the workpiece is in a range that can be operated or identified can be accurately judged.
As shown in fig. 4, as a preferred embodiment of the present invention, the method further includes:
step S40: if the theoretical detection distribution range in the same period and the circulation track meet the superposition condition, judging that the workpiece is positioned in an error range corresponding to the theoretical circulation position;
step S41: and if the theoretical detection distribution range in the same period and the circulation track do not meet the superposition condition, judging that the workpiece is not positioned in an error range corresponding to the theoretical circulation position.
When the embodiment is applied, the coincidence condition can be that a set coincidence threshold value, such as more than 90%, is met, and can be determined according to practical situations, when the theoretical detection distribution range in the same period of time and the circulation track meet coincidence, the condition indicates that the workpiece can have basic conditions detected by operation or after operation, namely, the workpiece can be in a range which can be operated or identified, and otherwise, the workpiece is not in a range which can be operated or identified.
As a preferred embodiment of the present invention, the digital twin model is built according to historical production monitoring parameter conditions, wherein the historical production monitoring parameter conditions comprise at least one of environmental conditions and service life conditions, and the method further comprises substituting the associated parameters of the current possible abnormal setting bit into the digital twin model to generate a fault index of the possible abnormal setting bit, and the associated parameters comprise at least one of environmental conditions and service life conditions.
In general, digital twin model construction is to realize digital modeling of properties, methods, behaviors and the like of physical entities and processes in a digital space; the model construction can be in a multi-dimensional mode of geometry-physics-behavior-rule and can also be in a multi-domain mode of mechanical-electrical-hydraulic;
it may be appreciated that in this embodiment, the digital twin model may be an environment-failure model, which reflects the failure condition of the relevant device under various environmental conditions, where the failure may be represented by an abnormality in the operating parameters; of course, the digital twin model can also be a use duration-failure model under normal environment conditions, which reflects the failure condition of the related equipment under normal use conditions, wherein the failure can be represented by abnormal working parameters, and of course, the digital twin model can also be an assembled use duration-environment-failure model; to ensure the correctness and effectiveness of the digital twin model, the model after construction and assembly or fusion needs to be verified to verify whether the model description and the characterization of the state or feature of the physical object are correct. If the model verification result does not meet the requirement, the model is required to be more approximate to the actual running or use state under the physical condition (such as various environmental conditions) through model correction, so that the accuracy of the digital twin model is ensured; the method further comprises substituting the associated parameters of the current possible abnormal setting position into the digital twin model to generate a fault index of the possible abnormal setting position, wherein the associated parameters comprise at least one of environmental conditions and service life conditions, and the larger the fault index is, the shorter the time is, the more likely the fault index is to fail or be abnormal, the more the fault index can be represented by approaching the time of use under the failure condition (the time of use under the failure condition can correspond to the time of use of the abnormal working parameters in the digital model).
As a preferred embodiment of the present invention, the method further comprises:
step S50: when the workpiece is judged not to be positioned in the error range corresponding to the theoretical circulation position, the transmission of the workpiece is judged to have faults, and transmission calibration prompt information is sent out.
When the method is applied, when the workpiece is not located in the error range corresponding to the theoretical circulation position, namely the workpiece is separated from the theoretical identification range of the target equipment at a certain possible abnormal setting position, the probability is high that the transmission of the station is failed, namely the transmission identification of the station is failed, the fed back transmission identification information is inaccurate, or the transmission of the station is failed, namely the transmission and the stop cannot be carried out according to the set transmission speed.
As a preferred embodiment of the present invention, the method further comprises:
step S60: and if the first detection information and the second detection information are displayed to be inconsistent according to the comparison result, and if the first detection information is blank information, judging that the corresponding possible abnormal bit has working faults, and sending out fault prompt.
It should be understood that when the first detection information is the vacancy information, which indicates that it is faulty in a certain data transmission link or the detection function is invalid, it should be determined that the corresponding possible abnormal bit has a working fault. At this time, a fault prompt should be sent out, and the fault prompt can be sent out near the production line and can also be reported to the management and control center.
As another preferred embodiment of the present invention, as shown in fig. 5, in another aspect, a line monitoring system based on digital twinning technology, the system comprising:
the detection information acquisition module 100 is configured to: acquiring first detection information of a plurality of set bits in a production line, wherein the set bits comprise detection bits and operation bits;
an anomaly identification module 200 for: if the detection information of at least two non-similar setting positions is abnormal according to the first detection information, acquiring position circulation information of the workpiece and positioning possible abnormal setting positions;
a flow anomaly determination module 300 for: judging whether the workpiece is positioned in an error range corresponding to the theoretical circulation position according to the position circulation information of the workpiece;
a condition detection module 400 for: if the workpiece is judged to be positioned in an error range corresponding to the theoretical circulation position according to the position circulation information of the workpiece, the comprehensive detection equipment is instructed to perform at least two types of detection on the workpiece so as to obtain second detection information containing at least two types, the types of the second detection information are preferentially determined according to set conditions, the set conditions comprise fault indexes possibly abnormally positioned in a digital twin model, and the higher the fault indexes are, the higher the priority of the second detection information of the corresponding type is;
the contrast determination module 500 is configured to: and comparing the first detection information with the second detection information to obtain a comparison result, and judging that the corresponding possible abnormal setting bit has working misalignment when the comparison result shows that the detection information of the possible abnormal setting bit is inconsistent.
According to the production line monitoring method based on the digital twin technology, the production line monitoring system based on the digital twin technology is provided, the first detection information of a plurality of setting positions in the production line is obtained, the setting positions comprise detection positions and operation positions, if the detection information of at least two non-similar setting positions is identified according to the first detection information, the position circulation information of a workpiece is obtained, and the possible abnormal setting positions are located, whether the workpiece is located in an error range corresponding to the theoretical circulation position is judged according to the position circulation information of the workpiece, if yes, the comprehensive detection equipment is instructed to perform at least two types of detection on the workpiece, so that the second detection information comprising at least two types is obtained, the types of the second detection information are preferentially determined according to the setting conditions, the setting conditions comprise fault indexes of the possible abnormal setting positions in the digital twin model, the comparison result of the first detection information and the second detection information is obtained, when the comparison result shows that the detection information of the possible abnormal setting positions is inconsistent, the corresponding possible abnormal setting positions can be judged, the production line can be accurately set up based on the rapid setting of the abnormal setting positions, or the abnormal setting can be conveniently replaced, and the production line can be conveniently and accurately calibrated.
In order to be able to load the method and system described above to function properly, the system may include more or less components than those described above, or may combine some components, or different components, in addition to the various modules described above, for example, may include input and output devices, network access devices, buses, processors, memories, and the like.
The processor may be a central processing unit (CentralProcessingUnit, CPU), other general purpose processors, digital signal processors (DigitalSignalProcessor, DSP), application specific integrated circuits (ApplicationSpecificIntegratedCircuit, ASIC), off-the-shelf programmable gate arrays (Field-ProgrammableGateArray, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. The general purpose processor may be a microprocessor or the processor may be any conventional processor or the like, which is a control center of the above system, and various interfaces and lines are used to connect the various parts.
The memory may be used to store a computer and a system program and/or module, and the processor may perform the various functions described above by running or executing the computer program and/or module stored in the memory and invoking data stored in the memory. The memory may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function (such as an information acquisition template presentation function, a product information distribution function, etc.), and the like. The storage data area may store data created according to the use of the berth status display system (e.g., product information acquisition templates corresponding to different product types, product information required to be released by different product providers, etc.), and so on. In addition, the memory may include high-speed random access memory, and may also include non-volatile memory, such as a hard disk, memory, plug-in hard disk, smart memory card (SmartMediaCard, SMC), secure digital (SecureDigital, SD) card, flash card (FlashCard), at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.
It should be understood that, although the steps in the flowcharts of the embodiments of the present invention are shown in order as indicated by the arrows, these steps are not necessarily performed in order as indicated by the arrows. The steps are not strictly limited to the order of execution unless explicitly recited herein, and the steps may be executed in other orders. Moreover, at least some of the steps in various embodiments may include multiple sub-steps or stages that are not necessarily performed at the same time, but may be performed at different times, nor do the order in which the sub-steps or stages are performed necessarily performed in sequence, but may be performed alternately or alternately with at least a portion of the sub-steps or stages of other steps or other steps.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The foregoing examples illustrate only a few embodiments of the invention and are described in detail herein without thereby limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (9)
1. A method for monitoring a production line based on a digital twin technology, the method comprising:
acquiring first detection information of a plurality of set bits in a production line, wherein the set bits comprise detection bits and operation bits;
if the detection information of at least two non-similar setting positions is abnormal according to the first detection information, acquiring position circulation information of the workpiece and positioning possible abnormal setting positions;
judging whether the workpiece is positioned in an error range corresponding to the theoretical circulation position according to the position circulation information of the workpiece;
if yes, the comprehensive detection equipment is instructed to carry out at least two types of detection on the workpiece so as to obtain second detection information containing at least two types, wherein the types of the second detection information are preferentially determined according to set conditions, the set conditions comprise fault indexes which are possibly positioned abnormally in a digital twin model, and the higher the fault indexes are, the higher the priority of the second detection information of the corresponding type is;
and comparing the first detection information with the second detection information to obtain a comparison result, and judging that the corresponding possible abnormal setting bit has working misalignment when the comparison result shows that the detection information of the possible abnormal setting bit is inconsistent.
2. The method of claim 1, further comprising, after locating the possible anomaly setting bit:
and issuing a detection pause instruction to the detection equipment and/or the operation equipment corresponding to the abnormal setting bit so as to pause the detection and/or the operation until the detection equipment and/or the operation equipment are instructed to resume the detection and/or the operation according to the pause resume instruction.
3. The method of line monitoring based on digital twinning technology according to claim 1, further comprising:
when the detection information abnormality of the corresponding set bit is judged according to the first detection information, the detection information abnormality comprises at least one of workpiece detection parameter abnormality and working parameter abnormality, and the next step is executed;
and distinguishing the setting bits corresponding to the detection information anomalies according to distinguishing features, wherein the distinguishing features comprise segmentation distances which are divided according to the hierarchical working conditions.
4. A method for monitoring a production line based on a digital twin technology according to any one of claims 1 to 3, wherein the determining whether the workpiece is located within an error range corresponding to the theoretical circulation position according to the position circulation information of the workpiece specifically includes:
acquiring a circulation track of a workpiece corresponding to each target station, wherein the target stations comprise possible abnormal setting positions;
acquiring equipment action image information of a target station in the action time of the target equipment, and carrying out framing processing on the equipment action image information to generate a plurality of equipment action images;
identifying target action tracks of target equipment in a plurality of equipment action images, and identifying theoretical detection distribution ranges of the target equipment according to the target action tracks;
and judging whether the theoretical detection distribution range in the same period coincides with the circulation track.
5. The digital twinning technology based production line monitoring method of claim 4, further comprising:
if the theoretical detection distribution range in the same period and the circulation track meet the superposition condition, judging that the workpiece is positioned in an error range corresponding to the theoretical circulation position;
and if the theoretical detection distribution range in the same period and the circulation track do not meet the superposition condition, judging that the workpiece is not positioned in an error range corresponding to the theoretical circulation position.
6. The method of claim 1, wherein the digital twinning model is established according to historical production monitoring parameter conditions, wherein the historical production monitoring parameter conditions comprise at least one of environmental conditions and service life conditions, and wherein the method further comprises substituting an associated parameter of a current possible anomaly setting bit into the digital twinning model to generate a fault index of the possible anomaly setting bit, and wherein the associated parameter comprises at least one of environmental conditions and service life conditions.
7. The digital twinning technology based production line monitoring method of claim 5, further comprising:
when the workpiece is judged not to be positioned in the error range corresponding to the theoretical circulation position, the transmission of the workpiece is judged to have faults, and transmission calibration prompt information is sent out.
8. The method of line monitoring based on digital twinning technology according to claim 1 or 2, characterized in that the method further comprises:
and if the first detection information and the second detection information are displayed to be inconsistent according to the comparison result, and if the first detection information is blank information, judging that the corresponding possible abnormal bit has working faults, and sending out fault prompt.
9. A production line monitoring system based on digital twinning technology, the system comprising:
the detection information acquisition module is used for: acquiring first detection information of a plurality of set bits in a production line, wherein the set bits comprise detection bits and operation bits;
the abnormality identification module is used for: if the detection information of at least two non-similar setting positions is abnormal according to the first detection information, acquiring position circulation information of the workpiece and positioning possible abnormal setting positions;
the circulation abnormity judging module is used for: judging whether the workpiece is positioned in an error range corresponding to the theoretical circulation position according to the position circulation information of the workpiece;
the condition detection module is used for: if the workpiece is judged to be positioned in an error range corresponding to the theoretical circulation position according to the position circulation information of the workpiece, the comprehensive detection equipment is instructed to perform at least two types of detection on the workpiece so as to obtain second detection information containing at least two types, the types of the second detection information are preferentially determined according to set conditions, the set conditions comprise fault indexes possibly abnormally positioned in a digital twin model, and the higher the fault indexes are, the higher the priority of the second detection information of the corresponding type is;
the comparison judging module is used for: and comparing the first detection information with the second detection information to obtain a comparison result, and judging that the corresponding possible abnormal setting bit has working misalignment when the comparison result shows that the detection information of the possible abnormal setting bit is inconsistent.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116560326A (en) * | 2023-07-07 | 2023-08-08 | 中通服建设有限公司 | Intelligent factory management platform |
| CN116954178A (en) * | 2023-09-18 | 2023-10-27 | 深圳市新技智能设备有限公司 | Operation control method and system based on visual positioning |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116560326A (en) * | 2023-07-07 | 2023-08-08 | 中通服建设有限公司 | Intelligent factory management platform |
| CN116560326B (en) * | 2023-07-07 | 2023-09-22 | 中通服建设有限公司 | Intelligent factory management platform |
| CN116954178A (en) * | 2023-09-18 | 2023-10-27 | 深圳市新技智能设备有限公司 | Operation control method and system based on visual positioning |
| CN116954178B (en) * | 2023-09-18 | 2023-12-01 | 深圳市新技智能设备有限公司 | Operation control method and system based on visual positioning |
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