Character jet printing control system based on full-automatic production line
By monitoring and adjusting the running trajectory of the printhead in the inkjet printing equipment, the problem of abnormal printhead trajectory when printing on PCB boards of the same specification was solved, thereby improving printing quality and production efficiency, and reducing equipment failures and resource waste.
Patent Information
- Application Number
- CN202410725827.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-05
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2044-06-05
AI Technical Summary
When the printhead is printing on PCB boards of the same specifications, abnormal running trajectory affects printing quality and production efficiency, and may even lead to equipment failure.
By acquiring the X, Y, and Z axis coordinate information of the printhead of the inkjet printing equipment, calculating the baseline and actual running trajectory, judging the trajectory deviation value, generating trajectory abnormality signals, marking abnormal time points, and providing real-time feedback to operators or automated systems for adjustment.
Improve printing quality and equipment stability, reduce defective products and downtime, optimize the production process, and achieve efficient and stable character printing.
Smart Images

Figure CN118514430B_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of character jet printing control, and particularly relates to a character jet printing control system based on a full-automatic production line. BACKGROUND
[0002] The character jet printing control system based on the full-automatic production line is a comprehensive system integrating high-precision jet printing technology, automatic control and information processing technology. The main goal of the system is to automatically, accurately and efficiently jet print various characters, numbers, bar codes, two-dimensional codes and other information in the product production process to meet the needs of product identification, traceability, management and the like.
[0003] However, the running track of the jet head of the jet printing equipment, i.e., the jet printing line, is generally the same when the jet head is used to jet print the same specification of PCBs, which is crucial for ensuring the jet printing quality and consistency of products. However, the running track of the jet head may be abnormal due to factors such as deviation of the jet head from the predetermined track, unstable speed or abnormal acceleration, which may affect the jet printing quality, reduce the production efficiency, and even cause equipment failure. Therefore, the character jet printing control system based on the full-automatic production line is proposed. SUMMARY
[0004] The present application aims to provide a character jet printing control system based on a full-automatic production line, which solves the technical problem of being unable to monitor the running track of the jet head of the jet printing equipment when the jet head is used to jet print the same specification of PCBs.
[0005] The object of the present application can be achieved by the following technical solutions:
[0006] The character jet printing control system based on the full-automatic production line comprises:
[0007] A data acquisition module is configured to acquire X, Y and Z axis coordinate information corresponding to the jet head per second when the jet printing equipment is used to jet print a plurality of PCBs of the same specification.
[0008] A reference running track acquisition module is configured to obtain a reference running track of the jet head and reference coordinate points on the reference running track by statistically and calculating the coordinate values corresponding to the jet head per second.
[0009] A production duration acquisition module is configured to obtain the number of seconds corresponding to the production duration required by the jet head of the jet printing equipment to jet print the same specification of PCBs by calculating the production duration of the jet printing equipment in the production process of the plurality of PCBs of the same specification.
[0010] An actual running track acquisition module is configured to obtain coordinate points corresponding to the jet head per second according to the number of seconds corresponding to the production duration, and connect the coordinate points to obtain an actual running track.
[0011] Trajectory deviation value acquisition module: according to the distance between each coordinate point on the actual running trajectory and each reference coordinate point on the reference running trajectory, the trajectory deviation value is calculated;
[0012] Trajectory anomaly determination module: according to the trajectory deviation value, whether to generate a trajectory anomaly signal is determined.
[0013] As a further scheme of the present application: the specific way to obtain the reference running trajectory is:
[0014] The coordinate value Aat(XAat, YAat, ZAat) of the corresponding coordinate point per second of the nozzle when the nozzle is used to print multiple PCB boards of the same specification is obtained, wherein a is the number of corresponding PCB boards of the same specification, t is the number of seconds corresponding to the manufacturing time required by the printing device nozzle when printing the PCB boards of the same specification, a≥1, t≥1 second;
[0015] The coordinate mean value of the coordinate points corresponding to the same number of seconds of the nozzle when printing multiple PCB boards of the same specification is taken as the reference coordinate point Bt(XBt, YBt, ZBt), and each reference coordinate point is connected in turn, thereby obtaining the corresponding reference running trajectory of the printing device when printing the PCB boards of the same specification.
[0016] As a further scheme of the present application: the specific way to obtain the actual running trajectory of the printing device nozzle is:
[0017] The coordinate value of the corresponding coordinate point per second of the nozzle when printing the PCB boards of the same specification is marked as Et(XCt, YCt, ZCt), and each coordinate point is connected in turn, thereby obtaining the actual running trajectory of the printing device nozzle.
[0018] As a further scheme of the present application: the specific way to obtain the trajectory deviation value between the actual running trajectory and the reference running trajectory is:
[0019] According to the coordinates of each coordinate point on the actual running trajectory and each reference coordinate point on the reference running trajectory, the distance Ft between each coordinate point on the actual running trajectory and each reference coordinate point on the reference running trajectory is calculated by the distance formula, and the sum of the products of the distance Ft between each coordinate point on the actual running trajectory and each reference coordinate point on the reference running trajectory and the corresponding fixed coefficient Gt is marked as the trajectory deviation value H between the actual running trajectory and the reference running trajectory, wherein Gt is the fixed coefficient corresponding to each Ft, Gt is a preset value, t≥b≥1.
[0020] As a further scheme of the present application: the specific way to determine whether to generate a trajectory anomaly signal is:
[0021] When the track deviation value is greater than or equal to the set deviation threshold K, a track abnormal signal is generated, otherwise, no processing is performed.
[0022] As a further scheme of the present application: the specific way to obtain the manufacturing time length required by the inkjet device nozzle to manufacture the PCB boards of the same specification is:
[0023] The manufacturing time length corresponding to the inkjet device manufacturing the PCB boards of the same specification is marked as Ta, the discrete value U of Ta is obtained, when U is less than or equal to the preset value Y1, the mean value Tp of Ta is taken as the manufacturing time length D required by the inkjet device nozzle to manufacture the PCB boards of the same specification, when U is greater than the preset value Y1, the mean value of the maximum value and the minimum value in Ta is taken as the manufacturing time length D required by the inkjet device nozzle to manufacture the PCB boards of the same specification, and the product between the manufacturing time length and 60 seconds is taken as the corresponding seconds t of the manufacturing time length required by the inkjet device nozzle to manufacture the PCB boards of the same specification, the units of Ta and D are minutes, and the unit of t is seconds, wherein t≥r≥1.
[0024] As a further scheme of the present application: the specific way to obtain the set deviation threshold K is:
[0025] S1: select one from the plurality of PCB boards of the same specification as an analysis PCB board, mark the coordinate value of the coordinate point corresponding to the nozzle per second when the nozzle manufactures the analysis PCB board as Lt(XVt, YVt, ZVt); obtain the distance Mt between the coordinate point corresponding to the analysis PCB board per second and each reference coordinate point Bt on the reference running track through the distance calculation formula;
[0026] Obtain the sum of the products between the distance Mt between the coordinate value corresponding to the analysis PCB board per second and each reference coordinate point on the reference running track and the corresponding fixed coefficient Zt, and mark it as the difference value Q1 between the analysis PCB boards, that is, through the formula Wherein Ze is the weight coefficient corresponding to each Ge, t≥e≥1, and Ze is a preset value;
[0027] S2: repeat the above step S1, and obtain the difference value Qa corresponding to each PCB board of the same specification;
[0028] Obtain the value Qc that meets the preset condition P1 from the difference value Qa corresponding to each PCB board of the same specification, wherein c represents the number of values in Qa that meet the preset condition P1, when c is greater than the preset value Y2, the mean value Qp of Qa is taken as the set deviation threshold K, when c is less than or equal to the preset value Y2, the mean value of the maximum value and the minimum value in Qa is taken as the set deviation threshold K, and a≥c≥1.
[0029] As a further scheme of the present application: the preset condition P1 is: |Qa-Qp|≥Y4, wherein Y4 is a preset value, and Qp is the mean value of Qa.
[0030] As a further scheme of the present application: further comprising an abnormal time point marking module.
[0031] The abnormal time point marking module is configured to compare and analyze the distance Ft between each coordinate point on the actual running track and each reference coordinate point on the reference running track with the preset value Y3, output the time point v corresponding to the coordinate point whose distance Ft is greater than the preset value Y3, and mark the time point v as an abnormal time point, and do not process the time point corresponding to the coordinate point whose distance Ft is less than or equal to the preset value Y3, wherein the time point v refers to the number of seconds corresponding to the coordinate point, t≥v≥1.
[0032] The present application has the following beneficial effects:
[0033] (1) The present application generates a track abnormality signal by detecting and identifying the track deviation between the actual running track and the reference running track, so as to detect and feedback the track deviation of the jet printing equipment in the production process in real time, so that the operator or the automatic system can take timely measures to adjust and correct, avoid problem expansion, improve jet printing quality, timely detect and correct track deviation, reduce defective products, reduce downtime and waste of production resources, and prevent product quality decline and production line downtime and other problems, which helps to timely adjust the equipment, improve the stability and reliability of the jet printing equipment, and optimize the entire production process, helping to achieve high-quality, high-efficiency and stable character jet printing production.
[0034] (2) The present application can quickly identify the specific time when the problem occurs by marking the abnormal time point, thereby shortening the problem response time, helping to accurately locate the time when the problem occurs, and helping the relevant personnel to know the time point when the nozzle track deviates during jet printing production on the same specification PCB, providing detailed time clues for solving the problem, and timely informing the relevant personnel that the nozzle will deviate obviously when working for a specific number of seconds, which is helpful for the relevant personnel to further overhaul and monitor the nozzle. BRIEF DESCRIPTION OF DRAWINGS
[0035] The present application will be further described below with reference to the accompanying drawings.
[0036] Fig. 1 is a schematic diagram of the system framework structure of the present application;
[0037] Fig. 2 is a schematic diagram of the structure of the reference running track and the actual running track of the present application. DETAILED DESCRIPTION
[0038] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the scope of protection of the present application.
[0039] Embodiment one
[0040] Please refer to Figs. 1-2 The character spraying control system based on the full-automatic production line comprises:
[0041] The data acquisition module acquires the coordinate information corresponding to the spraying head per second when the spraying equipment sprays a plurality of PCBs of the same specification.
[0042] Specifically, the network API of the spraying equipment is used to acquire the X, Y and Z axis coordinate information of the spraying head per second and store them in the MySQL database. Alternatively, a sensor or a camera can be used to monitor and record the coordinate information corresponding to the spraying head per second of the spraying equipment.
[0043] The reference running track acquisition module is used to analyze the running track corresponding to the spraying equipment when the spraying equipment sprays a plurality of PCBs of the same specification, and then obtain the reference running track corresponding to the spraying equipment when the spraying equipment sprays the PCBs of the same specification. The specific mode is as follows:
[0044] The coordinate value corresponding to the spraying head per second when the spraying head sprays a plurality of PCBs of the same specification is acquired, i.e. the X, Y and Z axis coordinate corresponding to the spraying head per second, which is marked as Aat(XAat,YAat,ZAat), wherein a is the number of the corresponding PCBs of the same specification, t is the number of seconds corresponding to the manufacturing duration required by the spraying head of the spraying equipment when spraying the PCBs of the same specification, a≥1, and t≥1 second.
[0045] The average value of the coordinates corresponding to the same number of seconds when the spraying head sprays a plurality of PCBs of the same specification is taken as the reference coordinate point Bt(XBt,YBt,ZBt).
[0046] The reference coordinate points Bt are sequentially connected, and then the reference running track corresponding to the spraying equipment when the spraying equipment sprays the PCBs of the same specification is obtained.
[0047] The specific mode of acquiring the manufacturing duration required by the spraying head of the spraying equipment when spraying the PCBs of the same specification is as follows:
[0048] The manufacturing time of the inkjet equipment corresponding to the inkjet manufacturing of the plurality of PCBs of the same specification is marked as Ta;
[0049] The discrete value U of Ta is obtained by the formula When U is less than or equal to the preset value Y1, the average value Tp of Ta is taken as the manufacturing time D of the inkjet head of the inkjet equipment for the inkjet manufacturing of the PCBs of the same specification, and when U is greater than the preset value Y1, the average value of the maximum value and the minimum value of Ta is taken as the manufacturing time D of the inkjet head of the inkjet equipment for the inkjet manufacturing of the PCBs of the same specification, that is, the formula The manufacturing time D of the inkjet head of the inkjet equipment for the inkjet manufacturing of the PCBs of the same specification is calculated and obtained, wherein T max is the maximum value of Ta, T min is the minimum value of Ta, and the specific values of Y1 are determined by relevant personnel according to actual needs;
[0050] The number of seconds t corresponding to the manufacturing time of the inkjet head of the inkjet equipment for the inkjet manufacturing of the PCBs of the same specification is calculated by t=Dx60, and the units of Ta and D are hours, and the unit of t is seconds;
[0051] The actual running track acquisition module acquires the coordinate value corresponding to each second of the inkjet head for the inkjet manufacturing of the PCBs of the same specification, and connects them in sequence to obtain the actual running track of the inkjet head of the inkjet equipment, and the specific method is as follows:
[0052] The coordinate value corresponding to each second of the inkjet head for the inkjet manufacturing of the PCBs of the same specification is acquired, and each coordinate point coordinate is marked as Et
[0053] (XCt, YCt, ZCt), and each coordinate point is connected in sequence to obtain the actual running track of the inkjet head of the inkjet equipment;
[0054] The track deviation value acquisition module acquires the distance between each coordinate point on the actual running track and each reference coordinate point on the reference running track, and comprehensively analyzes the distance to obtain the track deviation value between the actual running track and the reference running track, and the specific method is as follows:
[0055] The distance is calculated by the formula:
[0056] The distance F between each coordinate point on the actual running track and each reference coordinate point on the reference running track is calculated and obtained;
[0057] The sum of the product of the distance Ft between each coordinate point on the actual running track and each reference coordinate point on the reference running track and its corresponding fixed coefficient Gt is marked as the track deviation value H between the actual running track and the reference running track, that is, through the formula Where Gb is the fixed coefficient corresponding to each Fb, t≥b≥1, Gb is a preset value, and the specific values of each fixed coefficient Gb are determined by relevant personnel according to actual needs;
[0058] The track anomaly determination module is configured to determine a track anomaly signal according to the track deviation value between the actual running track and the reference running track, and the specific mode is as follows:
[0059] When the track deviation value is greater than or equal to the set deviation threshold K, the track anomaly signal is generated, and when the track deviation value is less than the set deviation threshold K, no processing is performed;
[0060] By detecting and identifying the track deviation between the actual running track and the reference running track, the operator or the automatic system can be reminded of the abnormal situation. The track anomaly signal can be used to detect and feedback the track deviation of the inkjet printing equipment in the production process in real time. By discovering the abnormality in time, appropriate corrective measures can be taken in time. The track anomaly signal can quickly notify the operator or the automatic system, so that the operator or the automatic system can take timely measures to adjust and correct, reduce downtime and waste of production resources, prevent product quality decline and production line downtime, and other problems. This helps to timely adjust the equipment, optimize the process and troubleshoot, improves the stability and reliability of the inkjet printing equipment, and optimizes the entire production process, helping to achieve high-quality, high-efficiency and stable character inkjet printing production.
[0061] Embodiment Two
[0062] As Embodiment Two of the present application, compared with Embodiment One, the technical solution of the present embodiment is only different from Embodiment One in that the present embodiment further comprises a set deviation threshold acquisition module.
[0063] The set deviation threshold acquisition module is configured to analyze the distance between the coordinate value Aat(XAat, YAat, ZAat) corresponding to the nozzle per second when the nozzle is used to print a plurality of PCBs of the same specification and the reference coordinate point Bt(XBt, YBt, ZBt) corresponding to each second on the reference running track, and then obtain the set deviation threshold of the nozzle when the nozzle is used to print the PCBs of the same specification. The specific mode is as follows:
[0064] S1: Select one of the plurality of PCBs of the same specification as the analysis PCB;
[0065] S2: mark the coordinate value corresponding to the jet head per second during the jet head printing of the analysis PCB as Lt(XVt, YVt, ZVt);
[0066] The distance calculation formula is:
[0067] The distance Mt between the coordinate value corresponding to the analysis PCB per second and each reference coordinate point on the reference running track is calculated.
[0068] The sum of the product of the distance Mt between the coordinate value corresponding to the analysis PCB per second and each reference coordinate point on the reference running track and the corresponding fixed coefficient Zt is marked as the difference value Q1 between the analysis PCB, that is, through the formula Wherein Ze is the weight coefficient corresponding to each Ge, t≥e≥1, Ze is a preset value, and the specific value of each fixed coefficient Ze is determined by relevant personnel according to actual needs.
[0069] S3: repeat the above steps S1-S2, that is, the difference value Qa corresponding to each PCB of the same specification is obtained.
[0070] The value Qc satisfying the preset condition P1 is obtained from the difference value Qa corresponding to each PCB of the same specification, wherein c represents the number of values in Qa satisfying the preset condition P1, a≥c≥1.
[0071] The preset condition P1 is: |Qa-Qp|≥Y4, wherein Y4 is a preset value, the specific value of Y4 is determined by relevant personnel according to actual needs, and Qp is the average value of Qa.
[0072] S4: when c is greater than the preset value Y2, the average value Qp of Qa is taken as the set deviation threshold K, and when c is less than or equal to the preset value Y2, the average value of the maximum value and the minimum value in Qa is taken as the set deviation threshold K, that is, through the formula The specific value of Y2 is determined by relevant personnel according to actual needs.
[0073] Example three
[0074] As an embodiment of the application, compared with example one and example two, the difference between the technical scheme of the embodiment and example one and example two is only that the abnormal time point marking module in the embodiment.
[0075] The abnormal time point marking module is used for analyzing the distance between each coordinate point on the actual running track and each reference coordinate point on the reference running track, and marking the abnormal time node according to the analysis result, and the specific mode is:
[0076] The distance Ft between each coordinate point on the actual running track and each reference coordinate point on the reference running track is compared and analyzed with the preset value Y3, the time point v corresponding to the coordinate point with the distance Ft greater than the preset value Y3 is output, and is marked as an abnormal time point, and the time point corresponding to the coordinate point with the distance Ft less than or equal to the preset value Y3 is not processed, wherein the specific value of Y3 is determined by relevant personnel according to actual needs, and the time point v here refers to the second number t corresponding to the coordinate point, t >= v >= 1;
[0077] By marking the abnormal time point, the specific time when the problem occurs can be quickly identified, so that the problem response time is shortened, the time when the problem occurs is accurately positioned, the time when the nozzle track of the PCB board of the same specification is offset during printing production is known by relevant personnel, detailed time clues for solving the problem are provided, relevant workers are timely informed that the nozzle will be obviously offset when working to a specific second number, and it is beneficial for relevant personnel to further repair and monitor the nozzle.
[0078] Embodiment four
[0079] As embodiment four of the application, in the specific implementation, the technical scheme of the embodiment is to combine the schemes of the above-mentioned embodiment one, embodiment two and embodiment three.
[0080] The above formulas are all dimensionless values, and the formulas are obtained by collecting a large amount of data to simulate the nearest real situation, and the preset parameters and threshold values in the formulas are set by the person skilled in the art according to the actual situation.
[0081] The above is only a specific implementation of the application, but the protection scope of the application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the application, which should be covered in the protection scope of the application. Therefore, the protection scope of the application should be subject to the protection scope of the claims.
Claims
1. A character jet printing control system based on a fully automatic production line, characterized by, The method comprises the following steps: A data acquisition module is used to acquire X, Y, and Z axis coordinate information corresponding to the nozzle of a printing device per second when the printing device is used to print a plurality of PCBs of the same specification; A reference running track acquisition module is used to obtain a reference running track of the nozzle and reference coordinate points on the reference running track by counting and calculating the coordinate values corresponding to the nozzle per second; A production time length acquisition module is used to obtain the number of seconds corresponding to the production time length required by the nozzle of the printing device to print a PCB of the same specification by calculating the production time length of the printing device during the production of a plurality of PCBs of the same specification; An actual running track acquisition module is used to acquire coordinate points corresponding to the nozzle per second according to the number of seconds corresponding to the production time length, and the actual running track is obtained by connecting the coordinate points; A track deviation value acquisition module is used to calculate the track deviation value according to the distance between each coordinate point on the actual running track and each reference coordinate point on the reference running track; A track anomaly determination module is used to determine whether to generate a track anomaly signal according to the track deviation value. The specific method for obtaining the reference running track is as follows: The coordinate value Aat(XAat, YAat, ZAat) of the coordinate point corresponding to the nozzle per second when the nozzle is used to print a plurality of PCBs of the same specification is acquired, wherein a is the number of the same specification of the PCBs, t is the number of seconds corresponding to the production time length required by the nozzle of the printing device to print a PCB of the same specification, a≥1, and t≥1 second; The average value of the coordinates of the coordinate points corresponding to the same number of seconds when the nozzle is used to print a plurality of PCBs of the same specification is taken as the reference coordinate point Bt(XBt, YBt, ZBt), and each reference coordinate point is sequentially connected to obtain the corresponding reference running track of the printing device when the printing device is used to print a PCB of the same specification. The specific method for obtaining the actual running track of the nozzle of the printing device is as follows: The coordinate value of the coordinate point corresponding to the nozzle per second when the nozzle is used to print a PCB of the same specification is marked as Et(XCt, YCt, ZCt), and each coordinate point is sequentially connected to obtain the actual running track of the nozzle of the printing device.
2. The full-automatic production line-based character jet printing control system according to claim 1, characterized by, The specific method for obtaining the track deviation value between the actual running track and the reference running track is as follows: The distance Ft between each coordinate point on the actual running track and each reference coordinate point on the reference running track is calculated according to the coordinates of each coordinate point on the actual running track and each reference coordinate point on the reference running track, and the sum of the products of the distance Ft between each coordinate point on the actual running track and each reference coordinate point on the reference running track and the corresponding fixed coefficient Gt is marked as the track deviation value H between the actual running track and the reference running track, wherein Gt is the fixed coefficient corresponding to each Ft, and Gt is a preset value, t≥b≥1.
3. The full-automatic production line-based character jet printing control system according to claim 2, characterized by, The specific method for determining whether to generate a track anomaly signal is as follows: When the track deviation value is greater than or equal to the set deviation threshold K, a track anomaly signal is generated, otherwise, no processing is performed.
4. The full-automatic production line-based character inkjet printing control system according to claim 3, characterized by, The specific method for obtaining the manufacturing time length required by the inkjet device nozzle for manufacturing the same specification PCB is as follows: The manufacturing time lengths of the inkjet device for manufacturing a plurality of same specification PCBs are respectively marked as Ta, and the discrete value U of Ta is obtained. When U is less than or equal to a preset value Y1, the mean value Tp of Ta is taken as the manufacturing time length D required by the inkjet device nozzle for manufacturing the same specification PCB. When U is greater than the preset value Y1, the mean value of the maximum value and the minimum value in Ta is taken as the manufacturing time length D required by the inkjet device nozzle for manufacturing the same specification PCB. The product of the manufacturing time length and 60 seconds is taken as the corresponding seconds t of the manufacturing time length required by the inkjet device nozzle for manufacturing the same specification PCB. The units of Ta and D are minutes, and the unit of t is seconds, wherein t≥r≥1.
5. The full-automatic production line-based character inkjet printing control system according to claim 4, characterized by, The specific method for obtaining the set deviation threshold K is as follows: S1: Select one from a plurality of same specification PCBs as an analysis PCB. The coordinate values of the coordinate points corresponding to the nozzle per second when the nozzle manufactures the analysis PCB are marked as Lt(XVt, YVt, ZVt). The distance Mt between the coordinate points corresponding to the analysis PCB per second and each reference coordinate point Bt on the reference running track is obtained by a distance calculation formula. The sum of the products of the distance Mt between each reference coordinate point on the reference running track and the corresponding coordinate value of the analysis PCB board per second and the corresponding fixed coefficient Zt is obtained, and is marked as the difference value Q1 between the analysis PCB boards, that is, through the formula wherein Ze is the weight coefficient corresponding to each Ge, t≥e≥1, and Ze is a preset value. S2: Repeat the above step S1 to obtain the difference value Qa corresponding to each same specification PCB. From the difference value Qa corresponding to each same specification PCB, the value Qc satisfying the preset condition P1 is obtained, wherein c represents the number of values in Qa satisfying the preset condition P1. When c is greater than a preset value Y2, the mean value Qp of Qa is taken as the set deviation threshold K. When c is less than or equal to the preset value Y2, the mean value of the maximum value and the minimum value in Qa is taken as the set deviation threshold K, wherein a≥c≥1.
6. The full-automatic production line-based character inkjet printing control system according to claim 5, characterized by, The preset condition P1 is |Qa-Qp|≥Y4, wherein Y4 is a preset value and Qp is the mean value of Qa.
7. The full-automatic production line-based character inkjet printing control system according to claim 6, characterized by, It also includes an abnormal time point marking module. The abnormal time point marking module is used to compare and analyze the distance Ft between each coordinate point on the actual running track and each reference coordinate point on the reference running track with the preset value Y3. The time point v corresponding to the coordinate point with the distance Ft greater than the preset value Y3 is output and marked as an abnormal time point. The time point corresponding to the coordinate point with the distance Ft less than or equal to the preset value Y3 is not processed. Here, the time point v represents the seconds corresponding to the coordinate point, wherein t≥v≥1.
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