System and method for managing the provenance of components of a watch movement

Abstract

This invention discloses a component traceability management system and method for watch movements, belonging to the field of product traceability management technology. The system includes the following steps: establishing a component traceability reflectivity management file; structurally recording management data related to traceability collection and the shape characteristics of the engraving; and generating a reflection flicker feature table for traceability collection risk assessment based on the management data. This invention, by establishing a component traceability reflectivity management file and a reflection flicker feature table, achieves the correlation identification between light source parameters and metal surface characteristics, predicts reflection interference in advance, and optimizes the collection rhythm; it reconstructs the lighting and exposure methods by reconstructing the set of misjudged trigger points, and combines reverse exposure dark windows and scattered light and shadow to suppress specular reflection, resulting in stable imaging, clear engravings, and improved accuracy and reliability of traceability identification.

Description

Technical Field

[0001] This invention relates to the field of product traceability management technology, specifically to a traceability management system and method for watch movement components. Background Technology

[0002] Watch movement component traceability management refers to a comprehensive management process that uses big data processing technology to number, record, and track every component throughout the entire manufacturing, assembly, and quality inspection process of a watch movement, from procurement, warehousing, processing, assembly to finished product delivery. This management assigns unique identifiers to key components within the movement, such as gears, mainsprings, escapements, and balance wheels, and uses a big data processing platform to establish multi-dimensional data correspondences between physical parts and their production batches, processing techniques, test results, and assembly relationships. This allows any finished movement to be traced back to its specific component source, supply chain, and assembly sequence. When quality issues or performance fluctuations occur, the traceability information, combined with big data analysis, can quickly pinpoint the responsible party and the scope of impact, enabling production accountability, quality improvement, and supply chain risk control, thereby ensuring the consistency and reliability of watch movement manufacturing.

[0003] The existing technology has the following shortcomings:

[0004] In existing technologies, during the parts traceability management process, optical acquisition devices are easily interfered with by reflected stroboscopic light when identifying metal surface parts. When the metal surface experiences momentary reflection or periodic flickering in a high-brightness production environment, the acquisition device can easily generate false identification information during imaging management. These ghost images are highly similar to the real codes in shape and brightness, and the traceability management system may misjudge them as new batch numbers during automatic identification and data collection, leading to the same part being recorded as having different origins in traceability management. As production batches and traceability data continue to accumulate, these misjudgments can disrupt the quality tracking management chain, making it difficult for the traceability management system to accurately correspond to the actual source of parts, thus posing potential risks to subsequent testing management, recall management, and liability determination management.

[0005] The information disclosed in the background section is only intended to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0006] The purpose of this invention is to provide a traceability management system and method for watch movement components to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a method for tracing and managing the components of a watch movement, comprising the following steps:

[0008] Establish a traceability and reflective management file for parts. The management data related to traceability collection should include at least the light source frequency, illumination angle, metal surface roughness, and marking shape characteristics. Based on the management data, generate a reflective flicker characteristic table for traceability collection risk assessment, which will be used for subsequent optical collection image comparison.

[0009] Based on the reflection stroboscopic feature table, the data processing of the acquisition records during the source tracing acquisition process is time-axis aligned, the combination of reflection time and illumination angle that matches the reflection stroboscopic feature table is identified, and the acquisition time period corresponding to the combination is registered as a risk time period list, which is used to mark and schedule the source tracing acquisition operation for risk, and to provide time reference for subsequent imaging tests.

[0010] During the time periods indicated in the risk time period list, a short-term data collection strategy for tracing the source is implemented. The data collection results are compared and analyzed for consistency. The continuous contour changes of the metal marking edge are compared with the brightness jump trajectory of the ghost image to determine the location source of the ghost image. The data collection conditions related to the misjudgment of the ghost image are registered as a set of misjudgment trigger points.

[0011] Based on the set of misjudged trigger points, the resource parameters of the source tracing acquisition process are managed, reconstructed, and strategies are generated. This includes at least adjusting the lighting sequence and exposure rhythm, setting an alternating exposure mode with opposite phases, inserting static exposure intervals into the exposure rhythm, and generating reflection suppression control instructions for source tracing acquisition job scheduling.

[0012] Based on the reflection suppression control command, the source tracing and acquisition process is managed and controlled by dynamic strategy switching. A reverse exposure dark window is inserted in the corresponding time period of the risk time period list, and the scattered light and shadow projection parameters are configured to reduce specular reflection residue, thereby improving the availability and consistency of the source tracing and acquisition results and realizing dynamic control of metal surface reflection interference.

[0013] Preferably, the steps for generating the reflection flicker feature table are as follows:

[0014] For different types of metal parts in watch movements, the light source illumination scene is arranged according to the light direction and visible area of ​​the assembly position. The light source frequency and illumination angle are adjusted and the corresponding reflected light brightness distribution and light spot shape are collected to form a light parameter record.

[0015] Based on the recorded illumination parameters, a non-contact roughness scan is performed on the surface of the metal parts to obtain the surface height distribution and establish a correlation between the surface roughness parameters and the corresponding light source frequency and illumination angle.

[0016] By combining illumination parameters and surface roughness parameters, imaging is performed on the marking area to record the marking shape features and the corresponding reflection intensity distribution and brightness variation characteristics.

[0017] The light source frequency, illumination angle, metal surface roughness, and marking shape characteristics are structurally integrated to generate a reflection flicker characteristic table, which is then incorporated into the accessory traceability reflection record archive for subsequent optical image comparison.

[0018] Preferably, during the generation of the reflection flicker feature table, the reflection brightness distribution, brightness change time series, and code area coordinates collected under various lighting conditions are arranged according to a unified time reference, so that the reflection response corresponding to the light source frequency and the illumination angle forms a one-to-one correspondence on the time axis, thereby ensuring that the reflection flicker feature table has stable time reference consistency in the subsequent optical acquisition image comparison process.

[0019] Preferably, the steps for generating the risk time period list are as follows:

[0020] Based on the light source frequency and illumination angle in the reflection stroboscopic feature table, the exposure time of the optical acquisition process is synchronized with the reference, so that the time mark of the acquisition process is consistent with the time baseline in the reflection stroboscopic feature table.

[0021] After the time reference is synchronized, the illumination angle at the corresponding moment during the optical acquisition process is matched with the illumination angle in the reflection stroboscopic feature table to identify the reflection moment that matches the reflection stroboscopic feature.

[0022] Based on the identification of the reflection moment, the brightness change range during the acquisition process is tracked along the time axis to extract the reflection duration range corresponding to the reflection flicker period;

[0023] The duration of the reflection is organized according to the time sequence and the angle of illumination to form a list of risk time periods.

[0024] Preferably, the steps for generating the set of false trigger points are as follows:

[0025] Short-term optical acquisition is performed based on the time range and illumination conditions recorded in the risk time period list, so that the acquisition process corresponds to the light source frequency, illumination angle and exposure time.

[0026] After completing short-term optical acquisition, the features of the corresponding marking area during the acquisition process are continuously extracted to form a record of continuous feature changes at the marking edge.

[0027] Based on the continuous feature change record of the code edge, the corresponding brightness change trajectory is extracted, and the brightness jump feature consistent with the reflection flicker period is identified;

[0028] Based on the correspondence between the brightness jump characteristics and the spatial position of the code edge, the location source of the ghost image is determined, and a set of misjudged trigger points is generated.

[0029] Preferably, when generating the set of false alarm trigger points, the time range of the ghost image is limited to the time interval corresponding to the risk time period list, and the spatial position of the ghost image is correlated with the continuous contour changes of the code edge, so that the set of false alarm trigger points simultaneously includes the reflection time, illumination angle and code position features, which is used to limit the correspondence between the ghost image formation conditions and the code area.

[0030] Preferably, the steps for generating the reflection suppression control command are as follows:

[0031] Based on the light source frequency, illumination angle, exposure duration and ghost image formation time recorded in the set of misjudged trigger points, the original illumination sequence is readjusted to form an illumination sequence that is out of sync with the reflection interference cycle.

[0032] After adjusting the lighting sequence, the exposure rhythm is reconstructed based on the phase relationship corresponding to the set of misjudged trigger points, and an alternating exposure mode with opposite phases is set.

[0033] Based on the alternating exposure method, a static exposure interval is inserted within the time interval of light source phase switching so that the exposure action avoids the changing range of reflection flicker;

[0034] By combining the illumination sequence, alternating exposure mode, and static exposure interval, a reflection suppression control command is generated, which includes emission sequence, exposure timing, and phase shift parameters.

[0035] Preferably, the illumination sequence and exposure timing in the reflection suppression control command are arranged according to the time distribution in the set of misjudged trigger points, so that the alternating exposure mode and the static exposure interval are executed first during the period of concentrated reflection interference, and the original exposure rhythm is restored when the reflection interference subsides, thereby enabling the optical acquisition process to maintain a dynamic control state corresponding to the reflection characteristics in different time intervals.

[0036] Preferably, the optical acquisition rhythm is switched according to the reflection suppression control command, a reverse exposure dark window is inserted during the risk period, and the specular reflection interference of the metal surface is suppressed by projecting scattered light and shadow. The steps are as follows:

[0037] Based on the light emission sequence, exposure rhythm, and phase parameters in the reflection suppression control command, the optical acquisition process is rhythm initialized and the acquisition rhythm is switched.

[0038] After the acquisition rhythm is switched, a reverse exposure dark window is inserted in the exposure sequence corresponding to the risk period so that the exposure action avoids the time interval of concentrated reflected energy.

[0039] After the reverse exposure dark window is completed, the scattered light and shadow projection is activated according to the reflection suppression control command, so that the reflected light from the metal surface is changed from specular reflection to diffuse reflection;

[0040] Based on the reflection suppression control command, the exposure, dark window and scattered light and shadow are periodically coordinated and executed to achieve dynamic control of the reflection interference on the metal surface.

[0041] The watch movement component traceability management system includes a reflection feature modeling module, a reflection feature alignment module, a ghost image recognition and positioning module, an exposure rhythm optimization module, and a reflection suppression execution module.

[0042] The reflective feature modeling module establishes a reflective management file for parts traceability. It records the management data related to traceability collection in a structured manner, including at least the light source frequency, illumination angle, metal surface roughness, and marking shape characteristics. Based on the management data, it generates a reflective flicker feature table for traceability collection risk assessment, which is used for subsequent optical collection image comparison.

[0043] The reflection feature alignment module, based on the reflection stroboscopic feature table, performs time-axis alignment data processing on the acquisition records during the source tracing acquisition process, identifies the reflection time and illumination angle combination that matches the reflection stroboscopic feature table, and registers the acquisition time period corresponding to the combination as a risk time period list, which is used to mark and schedule the source tracing acquisition operation for risk, and provides time reference for subsequent imaging tests;

[0044] The ghost image recognition and positioning module executes a short-term acquisition strategy for tracing the source within the time period indicated by the risk time period list. It performs consistency comparison analysis on the acquisition results, compares the continuous contour changes of the metal marking edge with the brightness jump trajectory of the ghost image, determines the location source of the ghost image, and registers the acquisition conditions related to the false judgment of the ghost image as a set of false judgment trigger points.

[0045] The exposure rhythm optimization module manages, reconstructs, and generates strategies for the acquisition resource parameters in the source tracing acquisition process based on the set of misjudged trigger points. This includes at least adjusting the lighting sequence and exposure rhythm, setting an alternating exposure mode with opposite phases, inserting static exposure intervals into the exposure rhythm, and generating reflection suppression control instructions for source tracing acquisition job scheduling.

[0046] The reflection suppression execution module manages and controls the dynamic strategy switching of the source tracing acquisition process according to the reflection suppression control command. It inserts a reverse exposure dark window in the corresponding time period of the risk time period list and configures the scattered light and shadow projection parameters to reduce specular reflection residue, thereby improving the availability and consistency of the source tracing acquisition results and realizing dynamic control of metal surface reflection interference.

[0047] The technical effects and advantages provided by the present invention in the above technical solution are as follows:

[0048] This invention establishes a traceability and reflectivity management file for accessories and a reflectivity flicker characteristic table, enabling unified management and correlation modeling of light source parameters, metal surface characteristics, and marking patterns. This allows various reflectivity features to form a complete data mapping relationship within the traceability management process, thus identifying potential reflectivity interference patterns during the optical acquisition management stage. By implementing timeline alignment management and risk period extraction management during the acquisition process, the acquisition device has the ability to provide early warning and rhythm control in areas where light is prone to producing ghosting, avoiding the superposition of light source flicker and specular reflection within the same cycle, ensuring the stability of brightness distribution during the acquisition process, and improving the accuracy and consistency of marking identification in traceability management.

[0049] This invention further implements dynamic management and reconstruction of the illumination sequence and exposure rhythm by using a set of misjudged trigger points. During high-risk periods, it introduces reverse exposure dark window management combined with scattered light and shadow projection management, transforming the spatial distribution of light energy from concentrated reflection to uniform diffuse reflection, effectively suppressing residual specular reflection on metal surfaces. Through the above dynamic control and management methods, reflection interference during the optical acquisition management process is continuously reduced, and the edge contrast and detail of the marking area remain stable, thereby achieving stable operation of the optical identification process for movement components and ensuring the reliability and consistency of traceability management data. Attached Figure Description

[0050] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0051] Figure 1 This is a flowchart of the method for tracing and managing the parts of a watch movement according to the present invention.

[0052] Figure 2 This is a schematic diagram of the components traceability management system for the watch movement of the present invention. Detailed Implementation

[0053] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, they are provided so that the description of this disclosure will be more complete and fully convey the concept of the exemplary embodiments to those skilled in the art.

[0054] This invention provides, for example Figure 1 The method for tracing and managing the components of a watch movement, as shown, includes the following steps:

[0055] Establish a traceability and reflective management file for parts. The management data related to traceability collection should include at least the light source frequency, illumination angle, metal surface roughness, and marking shape characteristics. Based on the management data, generate a reflective flicker characteristic table for traceability collection risk assessment, which will be used for subsequent optical collection image comparison.

[0056] In the implementation of traceability management for watch movement components, to ensure the accurate recording and reproduction of the reflective characteristics of metal components under different lighting conditions, the entire process of establishing a traceability reflective management file for components should be based on scientific parameter acquisition and multi-dimensional feature correlation. This implementation method achieves complete recording and integration of light source characteristics, illumination angle, metal surface roughness, and engraving shape characteristics through continuous steps, thereby generating a reflective flicker feature table to provide data support for subsequent optical image comparison. The specific implementation steps are as follows:

[0057] For different types of metal components in a watch movement, illumination scenarios were arranged according to their light-receiving direction and visible area at their assembly positions. The light source employed a frequency-adjustable LED array illumination device, with the frequency continuously varying within a specific range by controlling the current output. The illumination angle was controlled by a multi-dimensional mechanical turntable, allowing the light source to be adjusted sequentially in both horizontal and vertical directions at fixed step angles. For each illumination session, the distance between the light source and the component was fixed to maintain a constant incident point position on the illuminated surface. A high-resolution image acquisition device recorded the brightness distribution and spot shape of the reflected light under each frequency and angle combination. All illumination parameters, including frequency value, illumination angle, distance between the light source and the component, angle between the incident direction and the component's surface normal, and exposure duration, were fully recorded in the illumination archive to form a complete set of illumination parameters. Each set of illumination parameters corresponds to one or more frames of optical reflection images, serving as the foundational material for subsequent data association.

[0058] Based on the obtained illumination condition records, the physical properties of the metal component surface are quantitatively described. A non-contact surface roughness scanning device is used to collect microscopic height distribution data of the component surface through optical interferometry. This device scans the component surface at micrometer-level intervals, converting the measured surface height data into a three-dimensional surface topology map. To correlate illumination parameters with surface properties, the surface region corresponding to each set of illumination frequencies and angles is used as a matching unit. Its roughness parameters (including arithmetic mean height Ra, maximum height Rz, surface peak spacing Sm, and reflection direction distribution angle range) are recorded numerically in the illumination archive, establishing a data correlation between light source conditions and surface reflectivity. This method reflects the influence of different metal surface textures on reflection intensity, brightness distribution, and light spot diffusion range, thus providing reference data for surface response under each illumination condition in the archive.

[0059] Based on the obtained illumination parameters and metal surface roughness data, the morphological characteristics of the marking area on the metal fittings are recorded in detail. Markings are typically formed using laser engraving or mechanical etching processes, and their morphological characteristics include marking depth, marking width, edge angle, marking spacing, and marking array layout. Precision optical microscopy is used to acquire surface images of the marking area under different illumination angles, and the light intensity variation curves at the marking edges and the reflection distribution at the marking center are analyzed through image comparison. To ensure data consistency, each imaging of the marking area is performed under the light source frequency and illumination angle conditions determined in the first two steps. The geometric parameters of each marking line, along with its reflection intensity curve, reflection direction distribution data, and brightness variation period, are recorded in a data archive. This step ultimately forms a marking morphological feature dataset, allowing the marking morphological characteristics to form a complete reflection data unit together with illumination conditions and surface roughness information.

[0060] A reflection flicker feature table is generated by structurally integrating light source parameters, metal surface roughness data, and marking shape feature data. This table constructs a two-dimensional index matrix of reflection features, with light source frequency as the vertical axis and illumination angle as the horizontal axis. Each index unit stores the corresponding set of surface roughness parameters, marking geometric feature parameters, and reflection brightness distribution data. This structured approach allows for precise location and retrieval of reflection results under each illumination condition. The feature table also includes a light spot intensity distribution map, brightness change time series, light source phase parameters, and marking area coordinate information, thus providing both parameter-level data and image-level reference content. During generation, all data is arranged with a unified time reference, ensuring that light source frequency, illumination angle, and reflection response time correspond, guaranteeing that the feature table fully reflects the periodicity and flicker characteristics of reflection under different conditions. This reflection flicker feature table is ultimately incorporated into the parts traceability reflective record archive to provide reflection reference information during subsequent optical acquisition, assisting in identifying ghost areas caused by light source flicker and preventing the misidentification of reflective highlights as valid coded areas.

[0061] Based on the reflection stroboscopic feature table, the data processing of the acquisition records during the source tracing acquisition process is time-axis aligned, the combination of reflection time and illumination angle that matches the reflection stroboscopic feature table is identified, and the acquisition time period corresponding to the combination is registered as a risk time period list, which is used to mark and schedule the source tracing acquisition operation for risk, and to provide time reference for subsequent imaging tests.

[0062] To ensure that reflection events in the optically acquired images correspond to the light source conditions, illumination angles, and time characteristics recorded in the reflection flicker characteristic table, strict alignment of the timeline of the acquired images is required. This enables the identification of combinations of reflection times and illumination angles, and generates a list of risk time periods to provide accurate time references for subsequent imaging tests. The specific implementation steps are as follows:

[0063] Using the light source frequency and illumination angle recorded in the reflection stroboscopic feature table as the core index, the exposure time of the optical acquisition device in the production environment is synchronized with a reference. During synchronization, the reflection period corresponding to each group of light source frequencies in the feature table is used as the time reference period to calibrate the time recording unit of the acquisition device, ensuring that the timestamp of the captured image is consistent with the time baseline in the reflection feature table. To ensure the comparability of illumination conditions in the time dimension, the optical acquisition device records information such as the pulse period, illumination duration, exposure interval, and angle position emitted by the current light source before imaging begins, and matches these data with the corresponding items in the reflection feature table, so that the time axis position of each frame can be accurately mapped to the corresponding illumination period point in the feature table. Through this synchronization method, the time distribution of the captured image and the time structure of the reflection feature data are aligned, providing a foundation for subsequent reflection moment identification.

[0064] After timeline alignment, angle correlation identification is performed on reflection events in the optically acquired images. Using the illumination angle sequence recorded in the reflection feature table as a reference, the illumination angle information of each frame in the acquired images is matched with the reflection features of the same angle range in the feature table. Angle information is provided by the rotation positioning mechanism of the illumination device, recording the incident angle and azimuth angle of the light relative to the normal to the component surface during each exposure. In this way, the illumination angle combination corresponding to each frame of the image can be determined on the timeline. These angle combinations are matched with reflection records under the same conditions in the feature table. When an image area in the acquired image exhibits a brightness distribution consistent with the flicker fluctuation pattern recorded in the feature table, it is determined that the moment belongs to the interval where reflection flicker occurs. At this point, through the constraints of both time and angle, the flicker-affected portion of the acquired image can be accurately located.

[0065] After completing the dual matching of time and angle, the corresponding reflection moments in the captured images are continuously identified and recorded. Based on the flicker interference interval determined in the previous stage, the brightness change trend of adjacent frames is tracked sequentially along the time axis to extract the start and end times of brightness abrupt changes, thereby defining the duration of the reflection event. Each duration is compared with the start and end times of the reflection flicker cycle in the feature table, and intervals that meet the periodic characteristics are selected as candidate risk time periods. Subsequently, the images within these candidate time periods are further analyzed for brightness mean and compared with the spot shape to confirm whether they match the reflection intensity distribution in the feature table. When the two are consistent in brightness change direction, spot distribution position, and time delay characteristics, the time period is officially defined as a risk time period. In this way, a set of reflection moments matching the flicker interference characteristics can be accurately extracted from continuous captured images.

[0066] The identified risk time periods are organized chronologically and by illumination angle to generate a risk time period list. This list records information for each risk time period, including the starting frame number, number of consecutive frames, corresponding light source frequency, illumination angle, exposure duration, and light spot distribution location. Each record is indexed and associated with parameters in the reflection flicker characteristic table, ensuring that each risk interval in the list can be traced back to its corresponding reflection conditions. For ease of retrieval in subsequent imaging tests, the risk time period list is stored in time sequence format and linked to the exposure plan of the optical acquisition device. In this way, during subsequent image acquisition or recognition phases, when the system reaches the time period marked in the list, it can automatically adjust the exposure rhythm or illumination strategy to avoid the impact of reflection flicker interference.

[0067] During the time periods indicated in the risk time period list, a short-term data collection strategy for tracing the source is implemented. The data collection results are compared and analyzed for consistency. The continuous contour changes of the metal marking edge are compared with the brightness jump trajectory of the ghost image to determine the location source of the ghost image. The data collection conditions related to the misjudgment of the ghost image are registered as a set of misjudgment trigger points.

[0068] To identify ghosting caused by reflective flicker in metallic markings under specific lighting conditions and accurately determine the location and source of these ghostings, short-term image acquisition experiments must be conducted based on a list of risk time periods. By continuously capturing images and matching them with lighting parameters, the continuous contour changes of the metallic marking edges are compared with the brightness jumps of the ghostings, thus forming a set of misjudgment trigger points that includes the correspondence between time, location, and lighting conditions. The specific implementation steps are as follows:

[0069] Based on the time range and illumination conditions recorded in the risk period list, a short-time image acquisition plan was formulated. This plan used the start and end times of the risk period as boundaries, and the light source frequency, illumination angle, and exposure duration listed in the list as control parameters. During implementation, the optical acquisition device began acquiring images at the start time of the risk period through precise time synchronization control, continuously capturing each frame at a fixed frame rate. The light source output of the illumination device was modulated according to the frequency period in the list, ensuring that the pulse period, illumination direction, and brightness distribution of the light source were completely consistent with the conditions recorded in the list. Each frame of image, upon acquisition, recorded information such as the timestamp, light source frequency, illumination angle, exposure duration, and spatial distance between the light source and the accessory surface, forming a multi-dimensional data record corresponding to time and illumination conditions. The shooting environment maintained constant temperature and humidity conditions during acquisition to avoid fluctuations in light source output caused by environmental changes. In this way, the acquired short-time image sequence covered the entire illumination change process of the risk period, providing a continuous image basis for subsequent ghost image analysis.

[0070] The morphological features of the metal marking region in a short-time image sequence are continuously extracted and recorded. Using high-resolution image analysis, for each frame of the image, the brightness distribution curve of the marking edge, the spatial coordinates of the marking edge, the marking spacing, the marking width, and the shadow boundary formed by the marking depth are extracted. The extraction result of each marking edge is recorded as a contour curve, and point-by-point correspondence is performed between adjacent frames to form a continuous change sequence of the marking edge. By comparing the contour changes between consecutive frames, the stability and fluctuation of the marking edge in the time dimension can be observed. When light source flicker causes ghosting, the position of the marking contour in consecutive frames will show a slight shift or repetition of the image, and the brightness curve will produce a jump in a local area, thus forming the initial indication of ghosting. To ensure the spatial consistency of the comparison results, the marking region is kept in a fixed position and focal length during acquisition, and the lens axis of the optical acquisition device and the normal of the accessory surface are kept at a fixed angle, so that the geometric reference relationship of each frame of the image is consistent. Through this operation, complete edge change data of the metal marking within the risk period can be obtained, providing a continuous geometric reference for ghosting trajectory recognition.

[0071] After obtaining the continuous change curve of the code edge, the brightness jump trajectory of the ghost image is identified and located. The brightness values ​​of the same spatial location in different time frames are arranged in chronological order to generate a brightness change time distribution map. This distribution map reflects the brightness fluctuation trend of each pixel within the risk period. When the ghost image appears, the brightness distribution will produce a sudden peak in a short time, accompanied by a spatial shift in the shape of the bright spot. By comparing the brightness abrupt change position and time interval between different frames, the starting point, duration, and disappearance time of the ghost image can be determined. Further, these brightness abrupt change trajectories are compared with the illumination frequency and illumination angle in the risk period list. When the period of brightness abrupt change is consistent with the period of the light source frequency, and the offset direction of the ghost image is consistent with the reflection direction corresponding to the illumination angle, it can be determined that the ghost image is caused by specular reflection under specific illumination conditions. Through this two-dimensional analysis of time and space, the formation of the ghost image can be attributed to a specific reflection path and metal surface area. For example, when the illumination angle of the light source is steep, the brightness peak of the ghost image often appears in the reflection area of ​​the code line edge; when the period of light source frequency change is short, the ghost image lasts for fewer frames on the time axis. Through this process, the formation rules of the phantom and its source location are clearly defined in both spatial and temporal dimensions.

[0072] Based on the spatial coordinates and temporal correspondence of the ghost image brightness jump trajectory, a set of misjudged trigger points is generated. The initial time of appearance, disappearance time, peak brightness, light source frequency, illumination angle, ghost image offset distance, and corresponding marking position of each ghost image are recorded one by one and arranged in chronological order to form a trigger point list. Each misjudged trigger point represents a potential source of identification error, and its record includes the specific time of ghost image formation, spatial coordinates, reflection direction, light source illumination conditions, and geometric features of the marking edge. To ensure the integrity of the misjudged trigger point set, the risk time period list generated in the previous stage is used as a time index, limiting the time range of each trigger point to the corresponding risk interval, thus establishing a one-to-one structural relationship between the trigger point set and the risk time period. The final set of misjudged trigger points serves as an important basis for illumination control and can be used to optimize subsequent exposure rhythms and formulate reflection suppression strategies. Through this set, the formation position and duration of ghost images under specific light source frequencies and illumination angles can be accurately reflected, providing quantifiable reflection interference characteristic information for the optical acquisition process.

[0073] Based on the set of misjudged trigger points, the resource parameters of the source tracing acquisition process are managed, reconstructed, and strategies are generated. This includes at least adjusting the lighting sequence and exposure rhythm, setting an alternating exposure mode with opposite phases, inserting static exposure intervals into the exposure rhythm, and generating reflection suppression control instructions for source tracing acquisition job scheduling.

[0074] To eliminate flickering interference on metal surfaces under specific lighting conditions, the lighting sequence and exposure rhythm must be rearranged based on the set of misjudged trigger points established in the previous stage. This involves adjusting the emission phase of the light source and the exposure control timing to create alternating exposure patterns with opposite phases, and setting static exposure intervals within the rhythm to generate executable reflection suppression control commands. The specific implementation steps are as follows:

[0075] Based on the reflection interference characteristic data recorded in the set of misjudged trigger points, the relationship between the light source frequency, illumination angle, exposure duration, and ghost image formation time corresponding to each trigger point is analyzed. According to the distribution pattern of reflection events in the set, the frequency range of the light source is divided into multiple reflection-sensitive segments. The number of trigger points, their occurrence time, and duration within each segment are used to determine the easily interfered periods of illumination changes. Based on this, the original illumination sequence is adjusted, separating the periods where trigger points are concentrated from the continuous illumination sequence, and using the time interval between adjacent trigger points as the reference duration for light source switching. The rearrangement of the illumination sequence is based on chronological order, prioritizing the allocation of alternating illumination during periods of dense flicker interference, thus creating a misalignment between the light source emission state and the reflection interference cycle. In this way, subsequent exposure control can pause direct exposure or switch the light source phase during periods of strongest reflection, laying the foundation for subsequent exposure rhythm reconstruction.

[0076] Based on the redistribution of illumination sequence, the exposure rhythm was redesigned. According to the phase difference of each light source and the timing of misjudged trigger points, an alternating exposure mode with opposite phases was set. This method divides the originally synchronized exposure cycle into two complementary sequences: one triggers exposure during the rising phase of the light source's emission phase, and the other triggers exposure during the falling phase. This alternating arrangement ensures that the illumination phases between two consecutive exposures are distributed in opposite directions by 180 degrees, thus canceling out the reflection states captured by the two exposures in terms of brightness and angle. To ensure a balanced light energy distribution, the exposure control unit maintains a constant exposure time within each cycle, ensuring that the amount of light collected each time is equal. In this way, in the alternating exposure with opposite phases, the optical imaging device can acquire the peak value of reflected light in one frame and record the valley value of reflected light in the next frame, reducing the intensity of ghosting interference through mutual cancellation. This step establishes a synchronous correspondence between illumination sequence and exposure time, providing a foundation for subsequent rhythm optimization and static exposure insertion.

[0077] After setting the alternating exposure mode, the time distribution within the exposure rhythm is balanced by inserting static exposure intervals during the transition phases of light intensity changes. A static exposure interval refers to temporarily suspending exposure within the time window between the light source phase change and the exposure switch, allowing the light source output to enter a steady-state range before re-acquiring the image. The length of this interval is determined based on the duration of ghost images recorded in the set of misjudged trigger points, and its time range typically covers the complete cycle of ghost image brightness jumps. By inserting static exposure intervals at the light source phase transition points, reflected light during the flickering transition state is avoided during exposure. To ensure the rhythm continuity after the interval insertion, the total time remains constant within each exposure cycle, and the insertion time is compensated by shortening the duty cycle of the light source emission phase. Setting static exposure intervals allows optical acquisition to avoid peak reflection interference times in time, thereby further stabilizing the exposure results and ensuring a uniform distribution of light energy within the cycle.

[0078] A reflection suppression control command is generated by integrating three parameters: illumination sequence, alternating exposure mode, and static exposure interval. This command includes complete parameters such as the light source emission sequence, illumination angle switching sequence, exposure trigger time, static interval length, light source phase offset, and exposure duration. All parameters are arranged in a time sequence to form an executable control data stream, guiding the real-time rhythm switching of the optical acquisition process. To ensure that the control process completely corresponds to the reflection characteristics, each parameter record in the reflection suppression control command includes an index of misjudgment trigger points, enabling the optical acquisition device to automatically call the corresponding control parameters when a corresponding risk time period is identified, achieving dynamic adjustment of illumination and exposure. By executing this control command, the optical acquisition process can switch to opposite phase exposure or pause exposure at times of strong reflection interference, thereby reducing the brightness peak of ghost images caused by specular reflection and improving the true contrast and recognition accuracy of the marking edges in the image. The generation of the control command marks the transformation of the illumination rhythm from a static fixed mode to a dynamically adjustable synchronous mode, giving the reflection interference suppression process time responsiveness and adaptive characteristics.

[0079] According to the reflection suppression control command, the dynamic strategy switching management control is implemented in the source tracing and acquisition process. The reverse exposure dark window is inserted in the corresponding time period of the risk time period list, and the scattered light and shadow projection parameters are configured to reduce specular reflection residue, thereby improving the availability and consistency of the source tracing and acquisition results and realizing the dynamic control of metal surface reflection interference.

[0080] In the optical acquisition stage, to effectively reduce the interference of specular reflection from metal surfaces and periodic stroboscopic flashes on image recognition, the optical acquisition rhythm is dynamically adjusted based on the generated reflection suppression control command. Through the coordinated operation of rhythm switching, reverse exposure dark window insertion, and scattered light and shadow projection, precise elimination of reflection interference is achieved. The specific implementation steps are as follows:

[0081] Based on the light source emission sequence, exposure rhythm, and phase shift parameters recorded in the reflection suppression control command, the time control unit of the optical acquisition process is rhythmically initialized. During initialization, the light source frequency, illumination angle, exposure start time, exposure duration, and phase shift for each risk period in the command are imported into the execution table of the time control unit. The execution table, based on the time axis, sequentially arranges the trigger times of each illumination and exposure action. The illumination device adjusts the output state of the light source according to the execution table, ensuring that the light direction, incident angle, and light intensity distribution correspond to the control command. Each frame of image acquisition uses a time index as the control point, with the exposure start and end times strictly aligned with the light source emission phase. When the acquisition process enters a risk period marked by the command, the time control unit automatically initiates a rhythm switching command, delaying the exposure trigger by half a light source cycle, so that the next exposure occurs at the opposite phase of the light source output waveform. Through this operation, optical acquisition forms an inverse correspondence with reflection interference in time, ensuring that the exposure action avoids the moment when specular reflection light energy is concentrated, thereby effectively reducing ghosting during imaging.

[0082] After completing the illumination rhythm switch, a reverse exposure dark window is inserted into the exposure plan during the risk period according to the time allocation parameters in the reflection suppression control command. The insertion position of the dark window corresponds to the energy peak range of the light source output waveform. The function of the dark window is to temporarily suspend exposure during the period of highest reflected light intensity, allowing the reflected energy to naturally decay before being detected by the sensor. The duration of the dark window is determined based on the duration of the ghost image recorded in the previous stage's misjudgment trigger point set, and its duration covers the complete cycle of ghost image formation and disappearance. The insertion of the dark window is achieved by delaying the exposure start signal through the time control unit. The exposure operation is paused when the light source output reaches the preset illuminance threshold, and the exposure is restarted after the light source output drops to a stable illuminance range. To ensure continuous exposure rhythm, the duty cycle of the light source is adjusted after the dark window is inserted to maintain a constant total cycle duration. This operation ensures the balance of light intensity in the time dimension, preventing the peak reflected energy from being captured by the acquisition device during the exposure phase, fundamentally reducing the accumulation of specular reflection interference in the image.

[0083] After the reverse exposure dark window is executed, the diffused light and shadow projection operation is initiated according to the illumination configuration parameters of the reflection suppression control command. The diffused light and shadow is formed by projection from an auxiliary light source. The light emitted from this source undergoes refraction and diffuse reflection through multiple layers of diffusion material, creating a uniformly distributed weak light field in space. The projection timing of the diffused light and shadow is strictly synchronized with the end of the dark window, starting the instant the main light source resumes exposure. The diffused light and shadow form a certain angle with the illumination direction of the main light source, generally controlled between 30 and 45 degrees, allowing light to enter the metal surface from different directions, thereby dispersing the originally concentrated reflected light energy. The illuminance intensity of the diffused light and shadow is set according to the percentage ratio of the main light source output to ensure uniform light energy distribution throughout the illumination area. The projection duration is consistent with the main light source exposure duration, ensuring complete temporal overlap between the two illumination conditions. The addition of scattered light and shadow alters the reflection path of the metal surface, transforming specular reflection into multi-directional diffuse reflection. The reflected energy is distributed more evenly on the surface, weakening the localized high-brightness areas originally formed by specular reflection. The contrast and texture features of the engraving edges are stably preserved, providing higher-precision image information for subsequent recognition.

[0084] After completing the reverse exposure dark window insertion and diffused light projection, the entire optical acquisition process is dynamically controlled in a closed-loop rhythm. The time control unit, based on the period definition in the reflection suppression control command, performs unified time reference calibration on the four operational stages: illumination output, exposure triggering, dark window pause, and diffused light synchronization projection, ensuring the entire acquisition process is executed cyclically at a fixed rhythm. When the acquisition time enters the next risk period, the control unit automatically switches to a new illumination phase group and exposure control parameters, re-executing the rhythm switching, dark window insertion, and diffused light synchronization operations. Through this continuous cyclical dynamic control method, optical acquisition maintains reverse synchronization with reflection interference characteristics throughout the entire production cycle, ensuring exposure delay during periods of high reflection incidence, exposure recovery during periods of stable reflection, and scattering compensation during periods of residual reflection. Throughout the closed-loop control process, the light source phase offset, dark window duration, diffused light illuminance ratio, and exposure start and end times are all executed based on the parameters in the control command, ensuring that the actions at each stage do not overlap in time and that there are no abrupt changes in illumination energy. By periodically executing this process, optical acquisition can maintain a state of reflection suppression for a long time, so that the specular reflection of the metal surface is fully eliminated during the imaging process, thereby ensuring that the marking area of ​​the watch movement components can maintain clear and stable imaging quality under different lighting conditions.

[0085] This invention establishes a traceability and reflectivity management file for accessories and a reflectivity flicker characteristic table, enabling unified management and correlation modeling of light source parameters, metal surface characteristics, and marking patterns. This allows various reflectivity features to form a complete data mapping relationship within the traceability management process, thus identifying potential reflectivity interference patterns during the optical acquisition management stage. By implementing timeline alignment management and risk period extraction management during the acquisition process, the acquisition device has the ability to provide early warning and rhythm control in areas where light is prone to producing ghosting, avoiding the superposition of light source flicker and specular reflection within the same cycle, ensuring the stability of brightness distribution during the acquisition process, and improving the accuracy and consistency of marking identification in traceability management.

[0086] This invention further implements dynamic management and reconstruction of the illumination sequence and exposure rhythm by using a set of misjudged trigger points. During high-risk periods, it introduces reverse exposure dark window management combined with scattered light and shadow projection management, transforming the spatial distribution of light energy from concentrated reflection to uniform diffuse reflection, effectively suppressing residual specular reflection on metal surfaces. Through the above dynamic control and management methods, reflection interference during the optical acquisition management process is continuously reduced, and the edge contrast and detail of the marking area remain stable, thereby achieving stable operation of the optical identification process for movement components and ensuring the reliability and consistency of traceability management data.

[0087] This invention provides, for example Figure 2 The watch movement component traceability management system shown includes a reflection feature modeling module, a reflection feature alignment module, a ghost image recognition and positioning module, an exposure rhythm optimization module, and a reflection suppression execution module.

[0088] The reflective feature modeling module establishes a reflective management file for parts traceability. It records the management data related to traceability collection in a structured manner, including at least the light source frequency, illumination angle, metal surface roughness, and engraving shape characteristics. Based on the management data, it generates a reflection flicker feature table for comparison of traceability collection risk assessment.

[0089] The reflection feature alignment module, based on the reflection stroboscopic feature table, performs time-axis alignment data processing on the collection records during the source tracing collection process, identifies the reflection time and illumination angle combination that matches the reflection stroboscopic feature table, and registers the collection period corresponding to the combination as a risk period list for risk labeling and scheduling of source tracing collection operations.

[0090] The ghost image recognition and positioning module executes a short-term acquisition strategy for tracing the source within the time period indicated by the risk time period list. It performs consistency comparison analysis on the acquisition results, compares the continuous contour changes of the metal marking edge with the brightness jump trajectory of the ghost image, determines the location source of the ghost image, and registers the acquisition conditions related to the false judgment of the ghost image as a set of false judgment trigger points.

[0091] The exposure rhythm optimization module manages, reconstructs, and generates strategies for the acquisition resource parameters in the source tracing acquisition process based on the set of misjudged trigger points. This includes at least adjusting the lighting sequence and exposure rhythm, setting an alternating exposure mode with opposite phases, inserting static exposure intervals into the exposure rhythm, and generating reflection suppression control instructions for source tracing acquisition job scheduling.

[0092] The reflection suppression execution module manages and controls the dynamic strategy switching of the source tracing acquisition process according to the reflection suppression control command. It inserts a reverse exposure dark window in the corresponding time period of the risk time period list and configures the scattered light and shadow projection parameters to reduce specular reflection residue, thereby improving the availability and consistency of the source tracing acquisition results.

[0093] The watch movement parts traceability management method provided in this embodiment of the invention is implemented through the watch movement parts traceability management system described above. For details of the specific methods and processes of the watch movement parts traceability management system, please refer to the embodiments of the watch movement parts traceability management method described above, which will not be repeated here.

[0094] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A method for tracing and managing the components of a watch movement, characterized in that, Includes the following steps: Establish a traceability and reflectivity management file for accessories, record the management data and engraved shape characteristics related to traceability collection in a structured manner, and generate a reflection flicker characteristic table for traceability collection risk assessment based on the management data; Based on the reflection stroboscopic feature table, the data processing of the collection records in the source tracing collection process is time-axis aligned, the combination of reflection time and illumination angle that matches the reflection stroboscopic feature table is identified, and the collection period corresponding to the combination is registered as a risk period list; During the time periods indicated in the risk time period list, a short-term data collection strategy for tracing the source is implemented. The data collection results are compared and analyzed for consistency. The continuous contour changes of the metal marking edge are compared with the brightness jump trajectory of the ghost image to determine the location source of the ghost image. The data collection conditions related to the misjudgment of the ghost image are registered as a set of misjudgment trigger points. Based on the light source frequency, illumination angle, exposure duration and ghost image formation time recorded in the set of misjudged trigger points, the original illumination sequence is readjusted to form an illumination sequence that is out of sync with the reflection interference cycle. After adjusting the lighting sequence, the exposure rhythm is reconstructed based on the phase relationship corresponding to the set of misjudged trigger points, and an alternating exposure mode with opposite phases is set. Based on the alternating exposure method, a static exposure interval is inserted within the time interval of light source phase switching so that the exposure action avoids the changing range of reflection flicker; By combining the lighting sequence, alternating exposure mode, and static exposure interval, a reflection suppression control command is generated; According to the reflection suppression control command, the dynamic strategy switching management control is performed on the source tracing and collection process. A reverse exposure dark window is inserted in the corresponding time period of the risk time period list, and the scattered light and shadow projection parameters are configured to reduce specular reflection residue. The steps for generating the reflection flicker feature table are as follows: For different types of metal parts in watch movements, the light source illumination scene is arranged according to the light direction and visible area of ​​the assembly position. The light source frequency and illumination angle are adjusted and the corresponding reflected light brightness distribution and light spot shape are collected to form a light parameter record. Based on the recorded illumination parameters, a non-contact roughness scan is performed on the surface of the metal parts to obtain the surface height distribution and establish a correlation between the surface roughness parameters and the corresponding light source frequency and illumination angle. By combining illumination parameters and surface roughness parameters, imaging is performed on the marking area to record the marking shape features and the corresponding reflection intensity distribution and brightness variation characteristics. The light source frequency, illumination angle, metal surface roughness, and marking shape characteristics are structurally integrated to generate a reflection flicker characteristic table, which is then incorporated into the accessory traceability and reflection management file for subsequent optical image comparison.

2. The method for tracing and managing the components of a watch movement according to claim 1, characterized in that, In the process of generating the reflection flicker feature table, the reflection brightness distribution, brightness change time series and code area coordinates collected under various lighting conditions are arranged according to a unified time reference, so that the reflection response corresponding to the light source frequency and the illumination angle forms a one-to-one correspondence on the time axis.

3. The method for tracing and managing the components of a watch movement according to claim 1, characterized in that, The steps to generate the risk time period list are as follows: Based on the light source frequency and illumination angle in the reflection stroboscopic feature table, the exposure time of the optical acquisition process is synchronized with the reference, so that the time mark of the acquisition process is consistent with the time baseline in the reflection stroboscopic feature table. After the time reference is synchronized, the illumination angle at the corresponding moment during the optical acquisition process is matched with the illumination angle in the reflection stroboscopic feature table to identify the reflection moment that matches the reflection stroboscopic feature. Based on the identification of the reflection moment, the brightness change range during the acquisition process is tracked along the time axis to extract the reflection duration range corresponding to the reflection flicker period; The duration of the reflection is organized according to the time sequence and the angle of illumination to form a list of risk time periods.

4. The method for tracing and managing the components of a watch movement according to claim 3, characterized in that, The steps for generating the set of false trigger points are as follows: Short-term optical acquisition is performed based on the time range and illumination conditions recorded in the risk time period list, so that the acquisition process corresponds to the light source frequency, illumination angle and exposure time. After completing short-term optical acquisition, the features of the corresponding marking area during the acquisition process are continuously extracted to form a record of continuous feature changes at the marking edge. Based on the continuous feature change record of the code edge, the corresponding brightness change trajectory is extracted, and the brightness jump feature consistent with the reflection flicker period is identified; Based on the correspondence between the brightness jump characteristics and the spatial position of the code edge, the location source of the ghost image is determined, and a set of misjudged trigger points is generated.

5. The method for tracing and managing the components of a watch movement according to claim 4, characterized in that, When generating the set of false alarm trigger points, the time range of the ghost image is limited to the time interval corresponding to the risk time period list, and the spatial position of the ghost image is correlated with the continuous contour changes of the code edge, so that the set of false alarm trigger points simultaneously includes the time of reflection, the illumination angle, and the code position features.

6. The method for tracing and managing the components of a watch movement according to claim 1, characterized in that, The illumination sequence and exposure timing in the reflection suppression control command are arranged according to the time distribution in the set of misjudged trigger points, so that the alternating exposure mode and the static exposure interval are executed first during the period of concentrated reflection interference, and the original exposure rhythm is restored when the reflection interference subsides.

7. The method for tracing and managing the components of a watch movement according to claim 1, characterized in that, The optical acquisition rhythm is switched according to the reflection suppression control command. During the risk period, a reverse exposure dark window is inserted, and the specular reflection interference of the metal surface is suppressed by projecting scattered light and shadow. The steps are as follows: Based on the light emission sequence, exposure rhythm, and phase parameters in the reflection suppression control command, the optical acquisition process is rhythm initialized and the acquisition rhythm is switched. After the acquisition rhythm is switched, a reverse exposure dark window is inserted in the exposure sequence corresponding to the risk period so that the exposure action avoids the time interval of concentrated reflected energy. After the reverse exposure dark window is completed, the scattered light and shadow projection is activated according to the reflection suppression control command, so that the reflected light from the metal surface is changed from specular reflection to diffuse reflection; Exposure, dark windows, and scattered light and shadow are periodically coordinated and executed according to the reflection suppression control command.

8. A component traceability management system for watch movements, used to implement the component traceability management method for watch movements as described in any one of claims 1-7, characterized in that, It includes a reflection feature modeling module, a reflection feature alignment module, a ghost image recognition and localization module, an exposure rhythm optimization module, and a reflection suppression execution module: The reflective feature modeling module establishes a reflective management file for parts traceability, records the management data and engraved shape features related to traceability collection in a structured manner, and generates a reflection stroboscopic feature table for comparison based on the management data for traceability collection risk assessment. The reflection feature alignment module, based on the reflection stroboscopic feature table, performs time-axis alignment data processing on the collection records during the source tracing collection process, identifies the reflection time and illumination angle combination that matches the reflection stroboscopic feature table, and registers the collection period corresponding to the combination as a risk period list for risk labeling and scheduling of source tracing collection operations. The ghost image recognition and positioning module executes a short-term acquisition strategy for tracing the source within the time period indicated by the risk time period list. It performs consistency comparison analysis on the acquisition results, compares the continuous contour changes of the metal marking edge with the brightness jump trajectory of the ghost image, determines the location source of the ghost image, and registers the acquisition conditions related to the false judgment of the ghost image as a set of false judgment trigger points. The exposure rhythm optimization module manages, reconstructs, and generates strategies for the acquisition resource parameters in the source tracing acquisition process based on the set of misjudged trigger points. It sets an alternating exposure mode with opposite phases and inserts static exposure intervals into the exposure rhythm to generate reflection suppression control instructions for source tracing acquisition job scheduling. The reflection suppression execution module manages and controls the dynamic strategy switching of the source tracing acquisition process according to the reflection suppression control command. It inserts a reverse exposure dark window in the corresponding time period of the risk time period list and configures the scattered light and shadow projection parameters to reduce specular reflection residue, thereby improving the availability and consistency of the source tracing acquisition results.

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