Inventory management method and system based on production plan, and storage medium

Abstract

The invention discloses an inventory management method and system based on a production plan and a storage medium, and relates to the technical field of inventory management. The method comprises the steps that production information and part inventory information of all parts are acquired, the production information at least comprises a monthly production plan and a daily production plan, and the part inventory information at least comprises safety inventory time, safety inventory, one-time arrival quantity and actual inventory; based on the monthly production plan and the daily production plan, daily consumption expectation of each part is determined; based on the daily consumption expectation, the safe stock time, the safe stock amount and the one-time arrival amount, the stock standards of all the parts are determined, and the stock standards at least comprise the high-storage stock standard and the low-storage stock standard; and based on the inventory standard and the actual inventory, generating an inventory management strategy of each part. According to the scheme, adjustment of the real-time stock can be achieved, redundant stock is reduced, storage waste is reduced, overstock is avoided, safe stock is supplemented, and therefore the phenomena of piece accumulation and stop are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of inventory management, and in particular, to an inventory management method, system and storage medium based on a production plan. Background Art

[0002] With the development and progress of automation science, the current research focus in the field of automotive logistics has shifted from the development and research of distribution equipment to the setting and management of distribution plans, and the control of inventory is particularly important among them. If the inventory in the factory is low, it cannot meet the production needs, resulting in the risk of urgent parts or even production stoppages; if the inventory is too high, it will cause waste of storage resources, and it is difficult for parts to implement the principle of "first in, first out", and even cause the backlog of design changes.

[0003] Traditional inventory management solutions highly rely on manual experience. Special personnel are required to record the initial quantity of each part daily, calculate the arrival kanban and production consumption needs for the day, and cannot know the inventory quantity in specific links and cannot conduct real-time inventory checks, resulting in ineffective inventory management, serious urgent parts, frequent production stoppages, uneven workload, and huge waste.

[0004] In the prior art, there are solutions to achieve order splitting and progress control in the storage link through just-in-time and leveling logistics models, but there are also problems such as over-reliance on the absolute accuracy of production plans and inability to quickly respond to market changes, making it difficult to meet the flexible production needs of the current automotive industry.

[0005] In response to the above problems, no effective solution has been proposed yet. Summary of the Invention

[0006] Embodiments of the present invention provide an inventory management method, system and storage medium based on a production plan to at least solve the technical problem that the inventory in the factory storage link cannot be adjusted and controlled in real time.

[0007] According to one aspect of the embodiments of the present invention, an inventory management method based on a production plan is provided. The method includes the following steps: obtaining production information and part inventory information of each part, where the production information at least includes a monthly production plan and a daily production plan, and the part inventory information at least includes a safety inventory time, a safety inventory quantity, a one-time arrival quantity, and an actual inventory quantity; determining the daily consumption expectation of each part based on the monthly production plan and the daily production plan; determining the inventory standard of each part based on the daily consumption expectation, the safety inventory time, the safety inventory quantity, and the one-time arrival quantity, where the inventory standard at least includes a high storage inventory standard and a low storage inventory standard; generating an inventory management strategy for each part based on the inventory standard and the actual inventory quantity.

[0008] Optionally, based on the monthly production plan and the daily production plan, determine the daily consumption expectation of each part, including the following steps: obtain the bill of materials, and based on the monthly production plan and the bill of materials, determine the daily consumption plan of each part; evaluate the controllability of the daily production plan to obtain the evaluation result of the daily production plan; when it is determined that the evaluation result meets the preset conditions, determine the daily consumption plan as the daily consumption expectation of the part.

[0009] Optionally, after obtaining the evaluation result of the daily production plan, the method further includes the following steps: when it is determined that the evaluation result does not meet the preset conditions, based on the daily production plan and the monthly production plan, determine the uncontrollable production volume, where the uncontrollable production volume is used to represent the production volume in the daily production plan that does not conform to the monthly production plan; use the prediction model to determine the uncontrollable consumption expectation of each part, and the uncontrollable consumption expectation is used to represent the consumption expectation of each part corresponding to the uncontrollable production volume; based on the uncontrollable consumption expectation and the daily consumption plan, determine the daily consumption expectation of each part.

[0010] Optionally, to evaluate the controllability of the daily production plan and obtain the evaluation result of the daily production plan, it includes the following steps: based on the monthly production plan, determine the daily planned production volume; based on the daily production plan, determine the daily actual production volume; based on the daily planned production volume and the daily actual production volume, evaluate the controllability of the daily production plan to obtain the evaluation result of the daily production plan.

[0011] Optionally, based on the daily consumption expectation, the safety inventory time, the safety inventory quantity, and the one-time arrival quantity, determine the inventory standard of each part. The inventory standard at least includes the high storage inventory standard and the low storage inventory standard, including the following steps: based on the daily consumption expectation, the safety inventory time, and the safety inventory quantity, determine the low storage inventory standard; based on the low storage inventory standard and the one-time arrival quantity, determine the high storage inventory standard.

[0012] Optionally, before obtaining the production information and the part inventory information of each part, the method further includes the following steps: obtain the historical arrival information of each part, and the historical arrival information at least includes multiple historical arrival quantities and the occurrence frequencies of each historical arrival quantity; based on the historical arrival information, determine the high-frequency arrival quantity of each part, where the occurrence frequency of the high-frequency arrival quantity meets the preset frequency condition; based on the high-frequency arrival quantity of each part, determine the one-time arrival quantity of each part.

[0013] Optionally, to determine the high storage inventory standard in the inventory standard based on the low storage inventory standard and the one-time arrival quantity, it further includes the following steps: obtain the accommodation number information of the part, and the accommodation number information is used to represent the number of parts that a single part container can hold in the target logistics link, and the target logistics link at least includes the online link and the transportation link; based on the accommodation number information, the one-time arrival quantity, and the low storage inventory standard, determine the high storage inventory standard in the inventory standard.

[0014] According to another aspect of the embodiments of the present invention, there is also provided an inventory management system based on a production plan, including: an acquisition module configured to acquire production information and the inventory information of each part, where the production information at least includes a monthly production plan and a daily production plan, and the inventory information of each part at least includes a safety inventory time, a safety inventory quantity, a single arrival quantity, and an actual inventory quantity; a first determination module configured to determine the daily consumption expectation of each part based on the monthly production plan and the daily production plan; a second determination module configured to determine the inventory standard of each part based on the daily consumption expectation, the safety inventory time, the safety inventory quantity, and the single arrival quantity, where the inventory standard at least includes a high inventory standard and a low inventory standard; a generation module configured to generate an inventory management strategy for each part based on the inventory standard and the actual inventory quantity.

[0015] According to another aspect of the embodiments of the present invention, there is also provided a computer program product including computer instructions, which implement the steps of the above-mentioned inventory management method based on a production plan when executed by a processor.

[0016] According to another aspect of the embodiments of the present invention, there is also provided a computer-readable storage medium storing a computer program, where the computer program is configured to execute the above-mentioned inventory management method based on a production plan when running.

[0017] In the embodiments of the present invention, production information and the inventory information of each part are acquired, where the production information at least includes a monthly production plan and a daily production plan, and the inventory information of each part at least includes a safety inventory time, a safety inventory quantity, a single arrival quantity, and an actual inventory quantity; the daily consumption expectation of each part is determined based on the monthly production plan and the daily production plan; the inventory standard of each part is determined based on the daily consumption expectation, the safety inventory time, the safety inventory quantity, and the single arrival quantity, where the inventory standard at least includes a high inventory standard and a low inventory standard; an inventory management strategy for each part is generated based on the inventory standard and the actual inventory quantity. By calculating the overall parts required for production, the low inventory standard to meet production requirements is obtained, and the high inventory standard is calculated in combination with the arrival quantity. The real-time inventory quantity is compared with the low inventory standard and the high inventory standard, so as to adjust the real-time inventory quantity. Excess inventory can be cut on the high inventory, warehousing waste can be reduced, and backlogs can be avoided. Moreover, safety inventory can be replenished on the low inventory to reduce emergency parts and downtime phenomena. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0019] Figure 1Hardware structure block diagram of a computer terminal for an inventory management method based on a production plan according to one embodiment of the present invention;

[0020] Figure 2 Flowchart of an inventory management method based on a production plan according to one alternative embodiment of the present invention;

[0021] Figure 3 Structure block diagram of an inventory management system based on a production plan according to one embodiment of the present invention;

[0022] Figure 4 Logistics flowchart according to one alternative embodiment of the present invention;

[0023] Figure 5 Information transfer flowchart of an inventory management system according to one alternative embodiment of the present invention. Detailed implementation manners

[0024] In order to enable those skilled in the art of the present technology to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0025] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily need to be used to describe a specific order or sequence. It should be understood that such used data can be interchanged under appropriate circumstances so that the embodiments of the present invention described herein can be implemented in an order different from those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products, or devices.

[0026] According to one embodiment of the present invention, an embodiment of an inventory management method based on a production plan is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although the logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that here.

[0027] Embodiments of this method can be executed on a computer terminal or a similar computing device. Taking the operation on a computer terminal as an example, as Figure 1 shown, the computer terminal may include one or more processors 102 (processors may include, but are not limited to, processing devices such as central processing unit (CPU), graphics processing unit (GPU), digital signal processing (DSP) chip, microprocessor (MCU), field programmable gate array (FPGA), neural network processor (NPU), tensor processor (TPU), artificial intelligence (AI) type processors, etc.) and a memory 104 for storing data. Optionally, the above computer terminal may further include a transmission device 106 for communication functions, an input / output device 108, and a display 110. Those of ordinary skill in the art can understand that Figure 1 the structure shown is only illustrative and does not limit the structure of the above computer terminal. For example, the computer terminal may further include more or fewer components than those described in the above structure, or have a configuration different from that described in the above structure.

[0028] The memory 104 can be used to store computer programs, for example, software programs and modules of application software, such as the computer program corresponding to the inventory management method based on the production plan in the embodiments of the present invention. The processor 102 executes various functional applications and data processing by running the computer program stored in the memory 104, that is, implements the above-mentioned inventory management method based on the production plan. The memory 104 may include high-speed random access memory and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memories. In some instances, the memory 104 may further include a memory remotely located relative to the processor 102, and these remote memories can be connected to the mobile terminal through a network. Examples of the above network include, but are not limited to, the Internet, enterprise intranet, local area network, mobile communication network, and their combinations.

[0029] The transmission device 106 is used to receive or send data via a network. Specific examples of the above network may include a wireless network provided by a communication provider of the mobile terminal. In one instance, the transmission device 106 includes a network interface controller (NIC), which can be connected to other network devices through a base station and thus communicate with the Internet. In one instance, the transmission device 106 may be a radio frequency (RF) module, which is used to communicate with the Internet wirelessly.

[0030] The display 110 can be, for example, a touch-screen liquid crystal display (LCD). The liquid crystal display enables a user to interact with the user interface of the mobile terminal. In some embodiments, the above-mentioned mobile terminal has a graphical user interface (GUI), and the user can perform human-computer interaction with the GUI through finger contacts and / or gestures on the touch-sensitive surface. The human-computer interaction function may optionally include the following interactions: creating web pages, drawing, word processing, creating electronic documents, games, video conferencing, instant messaging, sending and receiving emails, call interfaces, playing digital videos, playing digital music, and / or web browsing, etc. The executable instructions for performing the above human-computer interaction functions are configured / stored in a computer program product or readable storage medium executable by one or more processors.

[0031] In this embodiment, an inventory management method based on a production plan running on the above computer terminal is provided. Figure 2 It is a flowchart of an inventory management method based on a production plan according to an embodiment of the present invention, as Figure 2 shown, and the process includes the following steps:

[0032] Step S21, obtain production information and the part inventory information of each part. The production information includes at least the monthly production plan and the daily production plan, and the part inventory information includes at least the safety inventory time, the safety inventory quantity, the single arrival quantity, and the actual inventory quantity.

[0033] Specifically, the monthly production plan is the types and production quantities of the production vehicle models in the next month in the system. The monthly production plan is usually formulated at the beginning of the month and serves as the planning basis for inventory management. The daily production plan is the actual production plan for the specific day, that is, the plan for the production vehicle models and quantities on that day. The inventory and production can be adjusted and managed according to the specific daily production plan.

[0034] In step S21, the part inventory information is the type and quantity information of each part required for the production vehicle. On this basis, the safety inventory time is the minimum inventory time that the stored part inventory quantity needs to maintain to ensure continuous and normal production. The safety inventory quantity is the minimum inventory quantity that can still ensure the continuous and normal operation of the production line without new arrivals. The single arrival quantity is the quantity of goods delivered by the supplier to the manufacturer during a single delivery process within a production cycle, including both the types of parts and the contained and total numbers of parts. Integrating and storing the production information and the inventory information of each part in the management system can achieve dynamic and refined management of the inventory, ensuring that the inventory can meet production requirements without excessive overstocking.

[0035] Step S22, based on the monthly production plan and the daily production plan, determine the daily consumption expectation of each part.

[0036] Specifically, in step S22, the following steps can be adopted to determine the daily consumption expectation: Based on the monthly production plan, determine the production models and quantities in the monthly production plan, perform a "vehicle disassembly" process on the vehicles in the monthly production plan to generate a single-vehicle quota, and then calculate the quantity of each part required for each vehicle; Combine the daily production plan with the monthly production plan, calculate the theoretical consumption of each part per day through "convolution", multiply the single-vehicle quota by the theoretical consumption of each part in the daily production plan, and then multiply by the safety inventory time and production rate to obtain the daily consumption expectation.

[0037] It should be noted that the "vehicle disassembly" process is to count the sum of each part required for producing a single vehicle to form a single-vehicle quota; the "convolution" algorithm is essentially a weighted average algorithm. The number of vehicle models in the daily production plan is used as the weight, multiplied by the vehicle model ratio and the single-vehicle quota of parts in the monthly production plan, and then accumulated to obtain the daily consumption expectation of parts.

[0038] In an exemplary embodiment of the present application, based on the daily production plan and the monthly production plan, through the convolution algorithm, for example, produce vehicle A 1 quantity, produce vehicle A 1 quantity, produce vehicle A 2 quantity... According to the single-vehicle quota of different types of vehicles, the types and quantities of parts required are X 2 、Y 1 、Y 1 、Y 2 ... Then the daily consumption expectation of part X 1 is B 1 *Y 1 +B 2 *Y 2 +... Finally, calculate and obtain the daily consumption expectation of each part.

[0039] Step S23, based on the daily consumption expectation, safety inventory time, safety inventory quantity, and one-time arrival quantity, determine the inventory standards for each part. The inventory standards include at least the high inventory standard and the low inventory standard;

[0040] Optionally, in step S23, the safety inventory quantity is equal to the value of the low inventory standard, that is, the low inventory standard is the storage quantity of parts for the safety inventory quantity. If the actual inventory quantity is lower than the low inventory standard, it means that the actual inventory quantity is lower than the safety inventory quantity. When the production parts are used up within the safety inventory time, there may be a risk of production stoppage. The high inventory standard is the upper limit standard of the inventory standard. When the actual inventory quantity exceeds the high inventory standard, there may be a risk of inventory backlog.

[0041] In this embodiment, multiplying the daily consumption expectation by the safety inventory time and the production rate can obtain the low inventory standard. Adding the low inventory standard to the one-time arrival quantity can obtain the in-stock standard. Furthermore, the high inventory standard can be set based on the in-stock standard. For example, the high inventory standard can be set to 1.2 times, 1.5 times the in-stock standard, or the same as the in-stock benchmark.

[0042] Step S24: Generate inventory management strategies for each part based on the inventory standard and the actual inventory quantity.

[0043] Specifically, in step S24, compare the actual inventory quantity with the low inventory standard and the high inventory standard of the inventory standard. For example, if the actual inventory quantity is lower than the low inventory standard, it is regarded as insufficient inventory; if the actual inventory quantity is close to the high inventory standard, it is regarded as the inventory approaching the upper limit; if the actual inventory quantity is between the low inventory standard and the high inventory standard, the inventory is within the safe range. The inventory management strategy can include a replenishment strategy, a reduction strategy, and a maintenance strategy based on the above comparison and analysis results. When the actual inventory quantity is lower than the low inventory standard, a replenishment strategy is generated; when the actual inventory quantity is close to or exceeds the high inventory standard, a strategy to reduce inventory is generated; when the actual inventory quantity is between the low inventory standard and the high inventory standard, no adjustment is required.

[0044] Through the above steps, production information and the part inventory information of each part are obtained. The production information includes at least the monthly production plan and the daily production plan, and the part inventory information includes at least the safety inventory time, the safety inventory quantity, the one-time arrival quantity, and the actual inventory quantity; based on the monthly production plan and the daily production plan, determine the daily consumption expectation of each part; based on the daily consumption expectation, the safety inventory time, the safety inventory quantity, and the one-time arrival quantity, determine the inventory standard of each part. The inventory standard includes at least the high inventory standard and the low inventory standard; based on the inventory standard and the actual inventory quantity, generate inventory management strategies for each part. By calculating the overall parts required for production, the low inventory standard to meet production requirements is obtained, and the high inventory standard is calculated in combination with the arrival quantity. Compare the real-time inventory quantity with the low inventory standard and the high inventory standard, so as to adjust the real-time inventory quantity. Excess inventory can be cut on the high inventory, warehousing waste can be reduced, and backlogs can be avoided. Safety inventory can be replenished on the low inventory to reduce emergency parts and downtime phenomena.

[0045] Optionally, in step S22, to determine the daily consumption expectation of each part based on the monthly production plan and the daily production plan, the following steps are included:

[0046] Step S221: Obtain the bill of materials, and based on the monthly production plan and the bill of materials, determine the daily consumption plan of each part;

[0047] Specifically, in the monthly production plan, the types and quantities of vehicles planned to be produced in the current month can be determined. In the bill of materials, there are corresponding types and quantities of parts consumed by each vehicle. Based on the bill of materials, the single-vehicle quota can be generated. At the same time, the monthly production can be used to determine the preliminary daily production plan. Combining the single-vehicle quota and the daily production plan determined based on the monthly production plan, the daily consumption plan based on the monthly production plan can be determined.

[0048] It should be noted that the daily consumption plan of each part determined based on the monthly production plan and the bill of materials is actually the estimated daily consumption plan of each part. The daily production plan based on the monthly production plan is also an estimated daily production plan, while the aforementioned daily production plan is the actual production plan for the current day.

[0049] Step S222: Evaluate the controllability of the daily production plan to obtain the evaluation result of the daily production plan.

[0050] Specifically, evaluate the controllability of the actual daily production plan of the current day. Compare the daily production plan with the monthly production plan, analyze the differences between the two, conduct a controllability evaluation, and generate an evaluation result at the same time. For example, if the daily production plan is within the expected range of the monthly production plan, the evaluation result considers the daily production plan to be "controllable"; otherwise, it is evaluated as "uncontrollable".

[0051] Step S223: When it is determined that the evaluation result meets the preset conditions, determine the daily consumption plan as the daily consumption expectation of the parts.

[0052] Specifically, the preset conditions mean that the change in the daily production plan and the difference from the monthly production plan are within the expected range, that is, when the preset conditions are met, that is, when the evaluation result of the daily production plan is controllable. In this case, the quantity of parts consumed in the daily production plan is determined as the daily consumption expectation and executed according to this daily production plan.

[0053] Optionally, in step S222, after obtaining the evaluation result of the daily production plan, the method further includes the following steps:

[0054] Step S224: When it is determined that the evaluation result does not meet the preset conditions, determine the uncontrollable production quantity based on the daily production plan and the monthly production plan, where the uncontrollable production quantity is used to represent the production quantity in the daily production plan that does not conform to the monthly production plan.

[0055] Specifically, compare the actual daily production plan with the monthly production plan, analyze the differences between the two, and conduct a controllability evaluation. For example, when those vehicles in the daily production plan that are not expected in the monthly production plan are significantly inconsistent with the monthly production plan, these production quantities are evaluated as uncontrollable production quantities.

[0056] Step S225: Determine the uncontrollable consumption expectation of each part using the prediction model. The uncontrollable consumption expectation is used to represent the consumption expectation of each part corresponding to the uncontrollable production volume.

[0057] Specifically, when there is an uncontrollable production volume, the conventional consumption prediction method cannot accurately reflect the actual consumption situation, so the prediction model is used to determine the uncontrollable consumption expectation.

[0058] Step S226: Determine the daily consumption expectation of each part based on the uncontrollable consumption expectation and the daily consumption plan.

[0059] Specifically, on the premise of confirming the daily consumption expectation of the controllable production volume in the daily production plan, identify and separate the part consumption expectation corresponding to the uncontrollable production volume (i.e., the uncontrollable consumption expectation), combine the daily consumption plan corresponding to the controllable daily output with the uncontrollable consumption expectation, and calculate the total daily consumption expectation of each part. For the uncontrollable consumption expectation, the weighted average algorithm in "convolution" is used to combine with the daily consumption plan for calculation.

[0060] In steps S224 - S226, when the evaluation result does not meet the preset conditions (usually the situation where the production volume in the daily production plan is more than the daily production volume in the monthly production plan), first determine the controllable daily consumption plan according to the monthly production plan, and the part of the daily production volume exceeding the monthly production plan is identified as the uncontrollable production volume. The uncontrollable consumption expectation is determined through the prediction model for the uncontrollable production volume, and the uncontrollable consumption expectation is combined with the daily consumption plan in a weighted manner to further determine the new daily consumption expectation, and re-evaluate and adjust the inventory based on the new daily consumption expectation. That is, considering external influences such as market fluctuations, it ensures the accuracy of inventory prediction and adjustment.

[0061] Optionally, in step S222, evaluate the controllability of the daily production plan to obtain the evaluation result of the daily production plan, including the following steps:

[0062] Step S2221: Determine the daily planned production volume based on the monthly production plan.

[0063] Specifically, the monthly production plan is the production plan for the next month. The total production volume in the monthly production plan can be evenly planned to the daily production volume of that month, that is, the daily planned production volume is determined.

[0064] Step S2222: Determine the daily actual production volume based on the daily production plan.

[0065] Specifically, the daily production plan is the production plan for the current day, that is, the daily actual production volume determined after adjusting the production plan due to market or objective factors.

[0066] Step S2223: Based on the daily planned production volume and the daily actual production volume, evaluate the controllability of the daily production plan to obtain the evaluation result of the daily production plan.

[0067] Specifically, the daily planned production volume is a standard reference value, and the daily actual production volume is a fluctuating value. A fluctuation range (i.e., a preset condition) is set for the standard reference value, and the difference between the daily actual production volume and the daily planned production volume is used to evaluate the controllability of the daily production plan.

[0068] In this embodiment, when the difference between the daily actual production volume and the daily planned production volume is within the fluctuation range, the daily actual production volume is evaluated as the controllable daily output; when the difference between the daily actual production volume and the daily planned production volume exceeds the fluctuation range, the daily actual production volume is split, and the part of the production volume that conforms to the fluctuation range in the daily actual production volume is recognized as the controllable daily output, while the part that exceeds the fluctuation range is recognized as the uncontrollable production volume.

[0069] Optionally, in step S23, based on the daily consumption expectation, safety inventory time, safety inventory quantity, and one-time arrival quantity, determine the inventory standards for each part. The inventory standards include at least the high inventory standard and the low inventory standard, and the following steps are included:

[0070] Step S231: Based on the daily consumption expectation, safety inventory time, and safety inventory quantity, determine the low inventory standard;

[0071] Specifically, the daily consumption expectation is the daily consumption expectation of each part after evaluating and adjusting the daily production plan. Multiplying the daily consumption expectation by the safety inventory time and the consumption rate (production rate) can calculate the safety inventory quantity. The safety inventory quantity is the minimum inventory quantity to ensure production demand and avoid production line stoppages.

[0072] It should be noted that the safety inventory quantity is determined based on the production rate of the production line, the safety inventory time, and the daily consumption expectation, that is, the safety inventory quantity is related to the production capacity and production plan. According to the production capacity of the production line, the monthly production plan, and the daily production plan, the safety inventory quantities of different production lines and different production times are also different. The low inventory standard is usually the safety inventory quantity, or the low inventory standard can be set to be greater than the safety inventory quantity, so the low inventory standard is also affected by the production line capacity and production time.

[0073] Step S232: Based on the low inventory standard and the one-time arrival quantity, determine the high inventory standard.

[0074] Specifically, the high inventory standard is the inventory upper limit formed by adding the one-time arrival quantity to the low inventory standard, that is, after determining the low inventory standard, the low inventory standard is added to the one-time arrival quantity to obtain it.

[0075] Optionally, before obtaining the production information and the inventory information of each part in step S21, the method further includes the following steps:

[0076] Step S201, obtain the historical arrival information of each part, where the historical arrival information includes at least a plurality of historical arrival quantities and the occurrence frequencies of each historical arrival quantity;

[0077] Specifically, the historical arrival information includes the specific arrival date, arrival quantity, and arrival part model of each production cycle. The historical arrival information is processed, statistically screened, and the data to be analyzed in the historical arrival information is extracted.

[0078] Step S202, based on the historical arrival information, determine the high-frequency arrival quantity of each part, where the occurrence frequency of the high-frequency arrival quantity meets the preset frequency condition;

[0079] Specifically, the historical arrival information in each production cycle is statistically analyzed, the arrival quantity and the occurrence frequency of the corresponding part in each historical arrival information are recorded, the frequency distribution of the arrival quantity is analyzed, and when the occurrence frequency of the arrival quantity in the historical arrival information meets the preset frequency condition, it is determined that the occurrence frequency of this arrival quantity is relatively high, and it is determined as the high-frequency arrival quantity.

[0080] It should be noted that the preset frequency condition is a pre-set frequency condition. For example, if the occurrence frequency of a certain part in the statistical analysis of the historical arrival information reaches a certain value or more, it is determined as the high-frequency arrival quantity.

[0081] Step S203, based on the high-frequency arrival quantity of each part, determine the one-time arrival quantity of each part.

[0082] Specifically, through the identified high-frequency arrival quantity, the one-time arrival quantity of this time or in the future can be set as the average value or median of the high-frequency arrival quantity to improve the accuracy of inventory replenishment.

[0083] Optionally, in step S232, based on the low inventory standard and the one-time arrival quantity, to determine the high inventory standard in the inventory standard, the method further includes the following steps:

[0084] Step S233, obtain the accommodation quantity information of the parts, where the accommodation quantity information is used to represent the number of parts that can be accommodated in a single part container in the target logistics link, and the target logistics link includes at least the online link and the transportation link;

[0085] Specifically, determine which target logistics links the accommodation quantity information is applied to. The number of parts that can be accommodated in a single part container in different target logistics links is different. In the transportation link, the design of the accommodation quantity needs to reasonably arrange the transportation according to the total quantity of transported parts to reduce the transportation cost. In the online link, the design of the accommodation quantity needs to be re-determined according to the quantity required for a single production to improve the production efficiency.

[0086] Step S234: Determine the high inventory standard in the inventory standard based on the containment quantity information, the first arrival quantity, and the low inventory standard.

[0087] Specifically, based on the first arrival quantity and the low inventory standard, adding the two can calculate the high inventory standard. Since the containment quantity of the containers in the transportation link and the on-line link is different, the statistical quantity of the first arrival quantity is also different, and thus the calculated high inventory standard is also different. Based on the containment quantity information, it is possible to determine to count the containment quantity of the containers in the on-line link or the transportation link to determine the first arrival quantity, and then calculate the high inventory standard.

[0088] As Figure 4 、 Figure 5 shown, the present application also provides a preferred embodiment of an inventory management method based on a production plan, which can quickly respond to the production plan and formulate an inventory management strategy. Specifically, it includes the following steps:

[0089] Step 1: Export the monthly production plan from the system, obtain the types of production models and the proportion of each model in the monthly production plan through data processing, and perform a "vehicle disassembly" process on the models in the monthly production plan. Obtain the summary of parts required for each vehicle through the BOM list (Bill of Materials, list of product parts and raw materials).

[0090] Step 2: Determine the daily planned production quantity according to the monthly production plan, determine the daily actual production quantity according to the daily production plan, and bring the daily actual production quantity into the system for comparison and query. Referring to the controllability and observability of modern control theory, when the daily actual production quantity meets the requirements of the daily planned production quantity, record the daily actual production quantity as the controllable daily output. When the daily actual production quantity exceeds the requirements of the daily planned production quantity, regard the excess part of the daily actual production quantity as the uncontrollable daily output;

[0091] Step 3: Determine the controllable daily output as the daily consumption plan, fit the uncontrollable daily output to generate an uncontrollable consumption expectation, add the daily consumption plan and the uncontrollable consumption expectation to obtain the daily consumption expectation, and perform multiplication and addition operations with the disassembly BOM list by a convolution algorithm to finally obtain the daily consumption expectation of all parts;

[0092] Step 4: Calculate the single-vehicle quota of each part. According to the single-vehicle quota and the total number of vehicles in the monthly production plan, obtain the daily consumption expectation for each vehicle produced in the monthly production plan, multiply it by the safety inventory time and the production rhythm (production rate), and calculate the low inventory standard of this part. Specifically, it can be calculated according to the following formula:

[0093] I(t) = -Dt + R + S 0 ;

[0094] Among them, D is the demand rate (production rate) per unit time; S 0 is the quantity of goods received in one arrival; R is the safety stock; I(t) is the inventory level at time t.

[0095] Step Five: Add the low inventory standard to the quantity of goods received in one arrival to obtain the in-stock benchmark, and set the high inventory standard according to the in-stock benchmark;

[0096] Step Six: Generate an adjustment strategy set based on the actual inventory, low inventory standard, and high inventory standard.

[0097] Among them, the adjustment strategy set is used to reduce the actual inventory above the high inventory standard, and the adjustment strategy is used to fill the actual inventory below the low inventory standard.

[0098] As Figure 4 shown, in Step Five, to obtain the quantity of goods received in one arrival, information such as the model and quantity of each part received in one arrival needs to be counted. Moreover, according to the differences in the transportation link and the on-line link, the receiving containers and the receiving quantities for parts are different, and the standards for the quantity of goods received in one arrival calculated based on different receiving containers are also different. The selection can be made through the OR gate principle in the logic circuit. The specific principle is as follows:

[0099] Set a selection mechanism for choosing one of the two receiving quantities in the system circuit and the UI interface (User Interface). Write the receiving quantity function as "K1 * transportation receiving quantity + K2 * on-line receiving quantity". If the transportation receiving quantity is selected in the selection of the two receiving quantities, the system automatically sets K1 to 1 and K2 to 0; conversely, if the on-line receiving quantity is selected, set K1 to 0 and K2 to 1 to facilitate the operator to select the required receiving quantity for inventory calculation without changing the underlying logic of the system.

[0100] This embodiment also provides a high-frequency arrival quantity screening algorithm for the quantity of goods received in one arrival. There can be multiple high-frequency arrival quantity screening algorithms for the quantity of goods received in one arrival. The algorithm in this embodiment does not adopt overly complex data processing methods. The quantity of goods received in one arrival of high-frequency available parts can be obtained only through the Excel tool, which can greatly improve the reliability of inventory management. The specific algorithm principle is as follows:

[0101] By conducting data statistics on the quantity of goods arriving in one batch, kanban data is generated. The kanban data includes at least the part model and the quantity of parts. Meanwhile, remarks are made on the kanban data. Using the "&" string in the Excel table, the part model, the quantity of parts, and the remarks information are concatenated into a single text column. A pivot table is created, and the single text column is marked as the row label for pivoting. Then, using the "TEXTSPLIT" delimiter, the row label is split according to the preset cells to generate a summary of the arrival frequency of the part model. After screening out the low-frequency data and then performing extreme value pivoting, the high-frequency and available quantity of goods arriving in one batch of parts can be obtained.

[0102] Through the description of the above embodiments, those skilled in the art can clearly understand that the method according to the above embodiments can be implemented by means of software plus a necessary general hardware platform. Of course, it can also be implemented by hardware, but in many cases, the former is a better implementation method. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions for causing a terminal device (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in various embodiments of the present invention.

[0103] In this embodiment, an inventory management system based on a production plan is also provided. This system is used to implement the above embodiments and preferred implementation methods, and those that have been described will not be repeated. As used below, the term "module" can be a combination of software and / or hardware that can achieve a predetermined function. Although the systems described in the following embodiments are preferably implemented in software, implementation in hardware, or a combination of software and hardware is also possible and contemplated.

[0104] Figure 3 is a structural block diagram of an inventory management system based on a production plan according to one embodiment of the present invention, as Figure 3 shown. This system includes: an acquisition module 42, and the acquisition module 42 is used to acquire production information and the part inventory information of each part. The production information includes at least the monthly production plan and the daily production plan, and the part inventory information includes at least the safety inventory time, the safety inventory quantity, the quantity of goods arriving in one batch, and the actual inventory quantity; a first determination module 44, and the first determination module 44 is used to determine the daily consumption expectation of each part based on the monthly production plan and the daily production plan; a second determination module 46, and the second determination module 46 is used to determine the inventory standard of each part based on the daily consumption expectation, the safety inventory time, the safety inventory quantity, and the quantity of goods arriving in one batch. The inventory standard includes at least the high storage inventory standard and the low storage inventory standard; a generation module 48, and the generation module 48 is used to generate the inventory management strategy of each part based on the inventory standard and the actual inventory quantity.

[0105] Through the above system, production information and the part inventory information of each part are obtained. The production information includes at least the monthly production plan and the daily production plan, and the part inventory information includes at least the safety inventory time, the safety inventory quantity, the one-time arrival quantity, and the actual inventory quantity. Based on the monthly production plan and the daily production plan, the daily consumption expectation of each part is determined. Based on the daily consumption expectation, the safety inventory time, the safety inventory quantity, and the one-time arrival quantity, the inventory standard of each part is determined. The inventory standard includes at least the high storage inventory standard and the low storage inventory standard. Based on the inventory standard and the actual inventory quantity, an inventory management strategy for each part is generated. By calculating the overall parts required for production, the bottom line of the safe production inventory to meet production requirements is obtained, and the upper limit of the safe production inventory is calculated in combination with the arrival quantity. The real-time inventory quantity is compared with the low storage inventory standard and the high storage inventory standard, so as to adjust the real-time inventory quantity. Excess inventory can be reduced at the high storage level, warehousing waste can be reduced, and the generation of design change backlogs can be avoided. Moreover, the safety inventory can be replenished at the low storage level to reduce urgent parts and downtime phenomena.

[0106] It should be noted that the above-mentioned each module can be implemented by software or hardware. For the latter, it can be implemented in the following ways, but not limited to this: all the above-mentioned modules are located in the same processor; or, the above-mentioned each module is located in different processors in any combination form.

[0107] Optionally, the inventory management system based on the production plan provided by the present application may further include other modules. For example, the inventory management system based on the production plan may further include a prediction module. The prediction module can predict the demand within a future period of time through historical data analysis, providing a basis for the adjustment of the production plan and inventory replenishment; an early warning module, which is used to monitor the inventory level in real time. When the inventory is lower than the safety inventory or exceeds the high storage inventory standard, an early warning message is sent to the management personnel.

[0108] The embodiment of the present application also provides a computer-readable storage medium. Optionally, in this embodiment, the above-mentioned readable storage medium can be used to store the program code executed by the inventory management method based on the production plan provided in the first embodiment above.

[0109] Optionally, in this embodiment, the above-mentioned readable storage medium can be located in any one of the computer terminals in the computer terminal group in the computer network, or in any one of the mobile terminals in the mobile terminal group.

[0110] The present application also provides a computer program product, which is suitable for executing the program of the steps of the inventory management method based on the production plan when executed on a data processing device.

[0111] Optionally, in this embodiment, the above-mentioned computer program is set to execute the following steps:

[0112] Step S1, obtain production information and the part inventory information of each part. The production information includes at least the monthly production plan and the daily production plan, and the part inventory information includes at least the safety inventory time, the safety inventory quantity, the one-time arrival quantity, and the actual inventory quantity;

[0113] Step S2, determine the daily consumption expectation of each part based on the monthly production plan and the daily production plan;

[0114] Step S3, determine the inventory standards of each part based on the daily consumption expectation, the safety inventory time, the safety inventory quantity, and the one-time arrival quantity. The inventory standards include at least the high storage inventory standard and the low storage inventory standard;

[0115] Step S4, generate the inventory management strategy of each part based on the inventory standards and the actual inventory quantity.

[0116] The readable storage medium provided in this application stores a computer program, wherein the computer program is set to execute the steps in any of the above method embodiments when running.

[0117] Optionally, in this embodiment, the above storage medium can be set to store a computer program for executing the following steps:

[0118] Step S1, obtain production information and the part inventory information of each part. The production information includes at least the monthly production plan and the daily production plan, and the part inventory information includes at least the safety inventory time, the safety inventory quantity, the one-time arrival quantity, and the actual inventory quantity;

[0119] Step S2, determine the daily consumption expectation of each part based on the monthly production plan and the daily production plan;

[0120] Step S3, determine the inventory standards of each part based on the daily consumption expectation, the safety inventory time, the safety inventory quantity, and the one-time arrival quantity. The inventory standards include at least the high storage inventory standard and the low storage inventory standard;

[0121] Step S4, generate the inventory management strategy of each part based on the inventory standards and the actual inventory quantity.

[0122] Optionally, the specific examples in this embodiment can refer to the examples described in the above embodiments and the optional implementation manners, and will not be elaborated here.

[0123] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages and disadvantages of the embodiments.

[0124] In the above embodiments of the present invention, the descriptions of each embodiment have their own focuses. For the parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0125] In several embodiments provided by the present application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are merely illustrative. For example, the division of the units can be a logical function division. In actual implementation, there can be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed couplings or direct couplings or communication connections between each other can be through some interfaces. The indirect couplings or communication connections of units or modules can be in electrical or other forms.

[0126] The units described as separate components may or may not be physically separated. The components displayed as units may or may not be physical units, that is, they can be located in one place or distributed to multiple units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0127] In addition, in each embodiment of the present invention, the functional units can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit. The above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.

[0128] If the above-mentioned integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which can be a personal computer, a server or a network device, etc.) to execute all or part of the steps of the methods described in each embodiment of the present invention. The foregoing storage medium includes: various media such as USB flash drives, read-only memories (ROM, Read-Only Memory), random access memories (RAM, Random Access Memory), mobile hard disks, magnetic disks or optical discs that can store program codes.

[0129] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A method for inventory management based on production planning, characterized in that: The method comprises the following steps: Acquire production information and parts inventory information of each part, wherein the production information at least includes a monthly production plan and a daily production plan, and the parts inventory information at least includes a safety inventory time, a safety inventory quantity, a one-time arrival quantity, and an actual inventory quantity; Determining the daily consumption expectation of each of the parts based on the monthly production plan and the daily production plan; Based on the daily consumption expectation and the safety inventory time, the safety inventory quantity, and the one-time arrival quantity, determining the inventory standard of each of the parts, the inventory standard at least including a high-stock inventory standard and a low-stock inventory standard; Based on the inventory standard and the actual inventory quantity, an inventory management strategy for each of the parts is generated.

2. The method according to claim 1, characterized in that Based on the monthly production plan and the daily production plan, determining the daily consumption expectation of each of the parts includes the following steps: Obtaining a bill of materials, and determining a daily consumption plan for each of the parts based on the monthly production plan and the bill of materials; Evaluating the controllability of the daily production plan to obtain an evaluation result of the daily production plan; When it is determined that the evaluation result meets the preset conditions, the daily consumption plan is determined to be the daily consumption expectation of the part.

3. The method according to claim 2, characterized in that After obtaining the evaluation result of the daily production plan, the method further comprises the following steps: In the case where it is determined that the evaluation result does not meet the preset condition, determining the uncontrollable production volume based on the daily production plan and the monthly production plan, wherein the uncontrollable production volume is used to represent the production volume in the daily production plan that does not meet the monthly production plan; Determine the expected uncontrollable consumption of each of the parts using a prediction model, wherein the expected uncontrollable consumption is used to represent the expected consumption of each of the parts corresponding to the uncontrollable production volume; Based on the uncontrollable consumption expectation and the daily consumption plan, the daily consumption expectation of each of the parts is determined.

4. The method according to claim 2, characterized in that: Evaluating the controllability of the daily production plan to obtain an evaluation result of the daily production plan includes the following steps: Based on the monthly production plan, determine the daily planned production volume; Based on the daily production plan, determining the actual daily production volume; Based on the daily planned production volume and the daily actual production volume, the controllability of the daily production plan is evaluated to obtain an evaluation result of the daily production plan.

5. The method according to claim 1, characterized in that Based on the daily consumption expectation and the safety inventory time, the safety inventory quantity, and the one-time arrival quantity, the inventory standard of each of the parts is determined, and the inventory standard at least includes a high-stock inventory standard and a low-stock inventory standard, including the following steps: Determining the low inventory standard based on the daily consumption expectation, the safety inventory time, and the safety inventory amount; Based on the low-storage inventory standard and the one-time arrival quantity, the high-storage inventory standard is determined.

6. The method according to claim 5, characterized in that Before obtaining the production information and the parts inventory information of each part, the method further includes the following steps: Acquire historical arrival information of each of the parts, wherein the historical arrival information at least includes a plurality of historical arrival quantities and the occurrence frequency of each of the historical arrival quantities; Based on the historical arrival information, determining the high-frequency arrival quantity of each of the parts, wherein the occurrence frequency of the high-frequency arrival quantity meets a preset frequency condition; Based on the high-frequency arrival quantity of each of the parts, the one-time arrival quantity of each of the parts is determined.

7. The method according to claim 5 or 6, characterized in that: Based on the low-stock inventory standard and the one-time arrival quantity, determining the high-stock inventory standard in the inventory standard further includes the following steps: Acquiring the receiving number information of the parts, wherein the receiving number information is used to indicate the number of parts contained in a single parts container in a target logistics link, wherein the target logistics link at least includes an online link and a transportation link; The high-stock inventory standard in the inventory standards is determined based on the storage number information, the one-time arrival quantity and the low-stock inventory standard.

8. An inventory management system based on production planning, characterized in that: include: An acquisition module, the acquisition module is used to acquire production information and parts inventory information of each part, the production information at least includes a monthly production plan and a daily production plan, and the parts inventory information at least includes a safety inventory time, a safety inventory quantity, a one-time arrival quantity and an actual inventory quantity; A first determination module, the first determination module is used to determine the daily consumption expectation of each of the parts based on the monthly production plan and the daily production plan; A second determination module, the second determination module is used to determine the inventory standard of each of the parts based on the daily consumption expectation and the safety inventory time, the safety inventory quantity, and the one-time arrival quantity, wherein the inventory standard at least includes a high inventory standard and a low inventory standard; A generation module is used to generate an inventory management strategy for each of the parts based on the inventory standard and the actual inventory quantity.

9. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the inventory management method based on production planning described in any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes a stored program, wherein when the program is executed, the computer-readable storage medium is controlled, and the device where the program is located executes the inventory management method based on production planning as described in any one of claims 1 to 7.

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