Method and system for measuring standard working hours of industrial production line

Abstract

The invention discloses a method and a system for measuring the standard working hours of an industrial production line, which are used for obtaining the standard working hours of a proofing product in advance by utilizing a video segmented accelerated playing technology in a product proofing stage.

Description

Technical Field

[0001] The present invention relates to the field of industrial engineering, and in particular to a method and system for decomposing process steps and measuring working hours in industrial production lines. Background Art

[0002] As competition in the manufacturing industry grows, production efficiency is becoming increasingly crucial to corporate profitability and employee benefits. Business managers, accustomed to seeking profits through industry or channel protection, often invest insufficient energy in efficiency research. This results in crude analysis of production line hours, high orders but low production efficiency, and overtime work to address missed delivery deadlines. This is an industry reality that urgently needs to change.

[0003] Standard working hours are the total time required for a qualified and trained worker to complete a specified task at a normal speed under specific working conditions. This includes basic operating time (direct operating time) and reasonable allowance time (such as fatigue, personal needs, and unavoidable delays). It is a core concept in working time measurement in industrial engineering and is used to measure production efficiency, formulate production plans, and calculate labor costs.

[0004] Currently, there are publicly available standard methods for measuring work hours. While the age-old stopwatch method has gradually been replaced by video capture and playback analysis, the analysis methods themselves still rely on statistical analysis techniques such as ECRS motion decomposition and clustering algorithms, based on video data collected from workstations already in production. During the pre-production phase, workers rely solely on the experience of experienced workers, making it difficult to obtain reasonable standard work hour data. This drawback is not fully apparent in large-scale production of a fixed variety, but in small-batch production of multiple varieties, a product is often taken offline before operational proficiency is fully stabilized, leaving no opportunity for post-production statistical analysis or correction. Furthermore, in some factories where compensation is based on piecework, workers will intentionally slow down during video capture in the hope of receiving a higher wage for their work. These are all shortcomings of existing methods. Summary of the Invention

[0005] Based on the problems existing in the above background technology, the present invention proposes a method and system for measuring standard working hours. By utilizing the video speed adjustment playback function, the video of the slow and unskilled work in the pre-production stage is accelerated to the reasonable standard assembly line speed of the skilled stage, thereby advancing the timing of measuring standard working hours to the pre-production stage. The steps of the implementation method are as follows:

[0006] S1: During the pre-production proofing phase, for processes without accurate historical standard working hours, video data of the entire processing operation is collected;

[0007] S2: The video data collected in step S1 is disassembled and optimized according to the ECRS method to obtain a series of slow-speed operation video segments of the unskilled pre-production proofing stage;

[0008] S3: Play the slow-motion video segments obtained in step S2 separately. Each video segment is accelerated at a different rate to record the video playback rate of the reasonable operation speed in the proficiency stage of the assembly line.

[0009] S4: Divide the original duration of each video by the playback rate obtained in step S3 to obtain the reasonable operation duration of the video. Combined with the existing historical accurate working time data, the standard working time data of each process of a complete product is obtained.

[0010] Among them, the video collected in step S2 is in the proofing stage, and the processing speed is mostly slow, so it cannot be used as the standard working hours of the production line. When playing at accelerated speed in step S3, observe and select a reasonable acceleration rate, so that a reasonable standard working time can be obtained through calculation.

[0011] Furthermore, when accelerating the video in step S3, if linear uniform acceleration does not achieve a reasonable effect, you can continue to set different acceleration rates in small segments until the playback observation speed is reasonable. In terms of implementation, proportionally deleting video frame data can also achieve the same acceleration effect.

[0012] A standard working hour measurement system includes a historical working hour video data storage and retrieval module, an ECRS video disassembly module, a video accelerated playback and rate recording module, and a standard working hour data formatting and output module;

[0013] The historical working time video data storage and retrieval module is used to provide work step video segment data retrieval according to process keywords to provide comparison on whether the working time of this video can be adopted;

[0014] The ECRS video disassembly module is used to segment the video and organize and process the original video segments according to the ECRS method;

[0015] The video acceleration and rate recording module is used to accelerate the video and provide playback function to evaluate the reasonable speed of the operation and record the playback rate at that time;

[0016] The standard working time data formatting output module is used to output and save the process data processed by the above modules in the standard working time data format required for production line scheduling.

[0017] A computer-readable storage medium stores a plurality of programs, which are used to be called by a processor and execute the standard working time measurement method as described above.

[0018] Those skilled in the art will understand that all or part of the steps of implementing the above-mentioned method embodiment can be completed by hardware related to program instructions, and the aforementioned program can be stored in a computer-readable storage medium. When the program is executed, it executes the steps of the above-mentioned method embodiment; and the aforementioned storage medium includes: ROM, RAM, disk or optical disk, etc. Various media that can store program codes.

[0019] The advantages of the standard working hour measurement method and system provided by the present invention are: the timing of measuring standard working hours is advanced to the product proofing stage. For production enterprises, first, processing costs can be assessed more accurately; second, production schedules can be arranged earlier and more accurately; third, for factories that implement piece-rate wages, the wages of each process can be disclosed in a timely manner, which can avoid the phenomenon of workers passively idling before the wages are disclosed. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the process of the present invention. DETAILED DESCRIPTION

[0021] The technical solutions of the present invention are described in detail below through specific embodiments. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0022] like Figure 1 As shown, the method for measuring the standard working hours of an industrial production line proposed by the present invention can be implemented according to the following four steps S1 to S4.

[0023] S1: During the pre-production proofing stage, for processes that do not have accurate historical working hours, video data of the entire processing operation is collected. The proofing process is also a single-piece processing process, and each process also needs to be completed. At the processing workbench or site of each process, a storable camera is used to record the operation process, thereby completing the collection of original video data.

[0024] S2: The video data collected in step S1 is disassembled and optimized according to the ECRS method to obtain a series of slow-speed work step video segments of the unskilled pre-production proofing stage;

[0025] The original video is divided into multiple video segments according to the operation steps, and the redundant action content not related to the proofing processing is deleted.

[0026] S3: The slow-motion video segments obtained in step S2 are accelerated at different rates to obtain the pipeline work step video segments with reasonable speeds for the proficiency stage.

[0027] Since proofing is typically done on new products and lack of familiarity with the processing is normal, the movements in the proofing video may be slow. Therefore, set different acceleration rates for each work step in the video segment. To determine the specific deletion ratio, try playing the video multiple times and observing the speed changes until the speed reaches the speed of skilled, repetitive work on the assembly line. If a linear, uniform acceleration doesn't achieve the desired effect, subdivide the video into smaller segments, each with a different acceleration rate.

[0028] S4: Divide the original duration of each video by the playback rate obtained in step S3 to obtain the reasonable operation duration of the video. Combined with the existing historical accurate working time data, the complete set of standard working time data for the entire process of the proofing product is obtained.

[0029] Note that if the frame deletion method is used to accelerate video processing, the original duration is the duration of the video after the frames are deleted and does not need to be divided by the acceleration rate.

[0030] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A method and system for measuring standard working hours of an industrial production line, characterized in that: The following steps are involved: S1: During the pre-production proofing phase, for processes without accurate historical working hours, video data of the entire processing operation is collected; S2: The video data collected in step S1 is disassembled and optimized according to the ECRS method to obtain a series of slow-speed operation video segments of the unskilled pre-production proofing stage; S3: Play the slow-motion video segments obtained in step S2 separately. Each video segment is accelerated at a different rate to record the video playback rate of the reasonable operation speed in the proficiency stage of the assembly line. S4: The original duration of each video is divided by the playback rate obtained in step S3 to obtain the reasonable operation duration of the video. Combined with the existing historical accurate working time data, the complete standard working time data for each process is obtained.

2. The method for measuring standard working hours according to claim 1, wherein: In the above S3, if the linear uniform acceleration cannot achieve a reasonable operating speed, each video segment can be further subdivided into small segments, and a different playback rate can be set for each small segment.

3. A system for measuring standard working hours of industrial production lines, characterized in that: It includes historical working hours video data storage and retrieval module, ECRS video disassembly module, video frame reduction acceleration and rate recording module, and standard working hours data formatting and output module; The historical working time video data storage and retrieval module is used to provide work step video segment data retrieval according to process keywords to provide comparison on whether the working time of this video can be adopted; The ECRS video disassembly module is used to segment the video and organize and process the original video segments according to the ECRS method; The video acceleration playback and rate recording module is used to repeatedly play the video through the segmented acceleration method and record the playback acceleration rate of each segment; The standard working time data formatting output module is used to output and save the process data processed by the above modules in the standard working time data format required for production line scheduling.

4. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a plurality of programs, which are used to be called by a processor and execute the method for measuring standard working hours of an industrial production line as claimed in claim 1.

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