CN105303359A - Method and device of determining material requirement planning - Google Patents
Method and device of determining material requirement planning Download PDFInfo
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- CN105303359A CN105303359A CN201510904125.1A CN201510904125A CN105303359A CN 105303359 A CN105303359 A CN 105303359A CN 201510904125 A CN201510904125 A CN 201510904125A CN 105303359 A CN105303359 A CN 105303359A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/30—Computing systems specially adapted for manufacturing
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Abstract
The invention discloses a method and device of determining a material requirement planning (MRP). The method comprises: pre-building a material substitution relation which supports circulative substitution among materials; extracting a bill of material (BOM) from a database; calculating the low level code (LLC) of materials according to the material substitution relation, setting grades of circulative substitution materials to be the same, and automatically existing a loop when a complete enclosed loop is formed through cycle computing LLCs; and according to an LLC sequence relation, calculating the requirement of each layer of materials, and determining an MRP. According to the invention, a material substitution relation supports material circulative substitution, LLC calculation also supports circulative substitution, and the case in which in a same day, material A substitutes for material B, and meanwhile the material B substitutes for material A is impossible, thereby avoiding endless loop.
Description
Technical field
The present invention relates to handling of goods and materials technical field, particularly relate to a kind of method and the device of determining MRP.
Background technology
In product manufacturing enterprise, for supplying client's required product or the supply market demand on time, and can not stock be caused, need to carry out MRP (MaterialRequirementPlanning is called for short " MRP ").MRP is the plan management of materials and quipment pattern in a kind of product manufacturing enterprise, refer to the subordinate according to the material of each level of product structure and quantitative relation, with each material for plan object, with the period of completion for time reference back scheduling, by time in advance length distinguish each article and to assign plans the sequencing of time.Therefore, MRP needs the demand calculating each level material.
The basic Data Source of of MRP is Bill of Material (BOM) (BillofMaterial is called for short " BOM ").BOM is the technological document defining product structure, and be also called product tree, product structure table or BOM table, it specifies the quantity required of structural relation between material and often kind of material.
Low Level Code (LowLevelCode is called for short " LLC ") refers to the lowest hierarchical level that a certain material is residing in BOM.When launching MRP and carrying out MRP, the order calculating material requirement is carried out from top to down, namely calculate from 0 level (highest level) of product, calculate toward the material that Low Level Code is large from the material that Low Level Code is little by the order of Low Level Code, when calculating a certain level of this product but Low Level Code is different, then only calculate the high material of level, level temporarily stores than the result of calculation calculating the low material of level, total demand can gather storage but not carry out the calculating of MRP demand and raw-material inventory allocation, like this, available tank farm stock priority allocation gives the material being in lowermost layer, ensure that the material of demand at first on the time first obtains inventory allocation, the material avoiding late demand extracts assigns plans and takies stock, therefore Low Level Code is the computation sequence of MRP.
In enterprise production process, all there is one or more alternative material in many starting material, between these materials, little, the dereliction of difference takes second place point, can phase trans-substitution in process of production, so just need the mutual substitutional relation setting up material, as: the alternative B of A, the simultaneously alternative A of B.
And existing solution is when MRP calculates, this circulation cannot be processed and substitute, unidirectionally can only set up substitutional relation.
Summary of the invention
The object of this invention is to provide a kind of method and the device of determining MRP, object to be to solve when existing MRP calculates and cannot the circulation carried out between material to substitute, can only unidirectionally set up the problem of substitutional relation.
For solving the problems of the technologies described above, the invention provides a kind of method determining MRP, comprising:
Set up material substitution relation in advance, described material substitution relation supports that the mutual circulation between material substitutes;
Bill of Material (BOM) is extracted from database;
Calculated the Low Level Code of material by described material substitution relation, the grade of material mutual circulation substituted is set to identical, automatically exits circulation when cycle calculations Low Level Code forms a complete closed loop;
Calculate the demand of the material of each level according to the ordinal relation of described Low Level Code, determine MRP.
Alternatively, the described ordinal relation according to described Low Level Code calculates the demand of the material of each level, determines that MRP comprises:
Obtain the demand bills data of material;
By described demand bills data, calculate the net demand data of described material;
By the ordinal relation of described net demand data and described Low Level Code, analog computation is carried out to estimate in Preset Time, generates described MRP.
Alternatively, described material substitution relation comprises: the material code of Bill of Material (BOM) ISN, Bill of Material (BOM) numbering, the first material, record separately ISN, as the second material code of the substitute materials of described first material and alternative consumption.
Alternatively, the described ordinal relation by described net demand data and described Low Level Code, analog computation is carried out to estimate in Preset Time, generates described MRP and comprise:
The tank farm stock of the first material in Bill of Material (BOM) and described net demand data are compared, when described tank farm stock is less than described net demand data, searching between described first material can the tank farm stock of the second material of phase trans-substitution, calculates described estimate.
Alternatively, the described Low Level Code by described material substitution relation calculating material comprises:
From described Bill of Material (BOM), extract material subordinate relation, set up temporary table, and successively restrain described temporary table, the convergence process based on described temporary table calculates the Low Level Code of described material.
The invention provides a kind of device determining MRP, comprising:
Pre-established module, for setting up material substitution relation in advance, described material substitution relation supports that the mutual circulation between material substitutes;
Extraction module, for extracting Bill of Material (BOM) from database;
Low Level Code computing module, for being calculated the Low Level Code of material by described material substitution relation, the grade of material mutual circulation substituted is set to identical, automatically exits circulation when cycle calculations Low Level Code forms a complete closed loop;
Determination module, for calculating the demand of the material of each level according to the ordinal relation of described Low Level Code, determines MRP.
Alternatively, described determination module comprises:
Acquiring unit, for obtaining the demand bills data of material;
Computing unit, for by described demand bills data, calculates the net demand data of described material;
Generation unit, for the ordinal relation by described net demand data and described Low Level Code, carries out analog computation to estimate in Preset Time, generates described MRP.
Alternatively, described material substitution relation comprises: the material code of Bill of Material (BOM) ISN, Bill of Material (BOM) numbering, the first material, record separately ISN, as the second material code of the substitute materials of described first material and alternative consumption.
Alternatively, described generation unit specifically for:
The tank farm stock of the first material in Bill of Material (BOM) and described net demand data are compared, when described tank farm stock is less than described net demand data, searching between described first material can the tank farm stock of the second material of phase trans-substitution, calculates described estimate.
Alternatively, Low Level Code computing module specifically for:
From described Bill of Material (BOM), extract material subordinate relation, set up temporary table, and successively restrain described temporary table, the convergence process based on described temporary table calculates the Low Level Code of described material.
Method and the device determining MRP provided by the present invention, by setting up material substitution relation in advance, extracts Bill of Material (BOM) from database; Calculate the Low Level Code of material by material substitution relation, the grade of material mutual circulation substituted is set to identical, automatically exits circulation when cycle calculations Low Level Code forms a complete closed loop; Calculate the demand of the material of each level according to the ordinal relation of Low Level Code, determine MRP.Method and the device determining MRP provided by the present invention, material substitution relation supports that Matter Transfer substitutes, and Low Level Code calculates also, and support circulation is alternative, the situation of material A substitute materials B or material B substitute materials A is only occurred on the same day, the situation of the material B substitute materials A simultaneously of material A substitute materials B on the same day can not be there is, thus avoid and be absorbed in endless loop.
Accompanying drawing explanation
In order to the technical scheme of the clearer explanation embodiment of the present invention or prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the process flow diagram determining a kind of embodiment of the method for MRP provided by the present invention;
The process flow diagram of MRP is generated in the method for the determination MRP that Fig. 2 provides for the present embodiment;
Fig. 3 is the process flow diagram determining the another kind of embodiment of the method for MRP provided by the present invention;
The structured flowchart of the device of the determination MRP that Fig. 4 provides for the embodiment of the present invention;
Fig. 5 is the structured flowchart determining determination module in the device of MRP provided by the present invention.
Embodiment
In order to make those skilled in the art person understand the present invention program better, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.Obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
As described in Figure 1, the method comprises the process flow diagram determining a kind of embodiment of the method for MRP provided by the present invention:
Step S101: set up material substitution relation in advance, described material substitution relation supports that the mutual circulation between material substitutes;
Step S102: extract Bill of Material (BOM) from database;
Step S103: the Low Level Code being calculated material by described material substitution relation, the grade of material mutual circulation substituted is set to identical, automatically exits circulation when cycle calculations Low Level Code forms a complete closed loop;
Step S104: the demand calculating the material of each level according to the ordinal relation of described Low Level Code, determines MRP.
The method determining MRP provided by the present invention, by setting up material substitution relation in advance, extracts Bill of Material (BOM) from database; Calculate the Low Level Code of material by material substitution relation, the grade of material mutual circulation substituted is set to identical, automatically exits circulation when cycle calculations Low Level Code forms a complete closed loop; Calculate the demand of the material of each level according to the ordinal relation of Low Level Code, determine MRP.The method determining MRP provided by the present invention, material substitution relation supports that Matter Transfer substitutes, and Low Level Code calculates also, and support circulation is alternative, the situation of material A substitute materials B or material B substitute materials A is only occurred on the same day, the situation of the material B substitute materials A simultaneously of material A substitute materials B on the same day can not be there is, thus avoid and be absorbed in endless loop.
On the basis of a upper embodiment, please refer to Fig. 2 and generate shown in the process flow diagram of MRP, provided by the present inventionly determine that in the method for MRP, step S104 can specifically comprise:
Step S201: the demand bills data obtaining material;
Step S202: by described demand bills data, calculates the net demand data of described material;
Step S203: by the ordinal relation of described net demand data and described Low Level Code, analog computation is carried out to estimate in Preset Time, generates described MRP.
In the present embodiment, material substitution relation can specifically comprise: the material code of Bill of Material (BOM) ISN, Bill of Material (BOM) numbering, the first material, record separately ISN, as the second material code of the substitute materials of described first material and alternative consumption.
In the present embodiment, the process of the described MRP of above-mentioned generation can be specially: the tank farm stock of the first material in Bill of Material (BOM) and described net demand data are compared, when described tank farm stock is less than described net demand data, searching between described first material can the tank farm stock of the second material of phase trans-substitution, calculates described estimate.
On the basis of above-mentioned any embodiment, particularly, the process being calculated the Low Level Code of material by described material substitution relation can be comprised:
From described Bill of Material (BOM), extract material subordinate relation, set up temporary table, and successively restrain described temporary table, the convergence process based on described temporary table calculates the Low Level Code of described material.
As shown in Figure 3, the method comprises the process flow diagram determining the another kind of embodiment of the method for MRP provided by the present invention:
Step S301: set up material substitution relation;
Step S302: Low Level Code calculates;
Step S303: obtain demand bills data;
Step S304: material net demand is calculated;
Step S305: material substitution is calculated;
Step S306: analog computation is carried out to estimate;
Step S307: generate planned order.
In above process, material substitution relation supports that Matter Transfer substitutes; Low Level Code calculates supports that circulation substitutes, and the grade mainly through the material by phase trans-substitution is set to same levels, and when cycle calculations Low Level Code forms a complete closed loop, system intelligence exits circulation; Simultaneously, MRP material substitution calculates supports that circulation substitutes, and is undertaken not distinguishing sequencing when substituting and calculate, only occur A on the same day and substitute the situation that B or B substitutes A by the material of phase trans-substitution, can not occur A on the same day substitute B simultaneously B substitute the situation of A, so just avoid being absorbed in endless loop.
Below the device of the determination MRP that the embodiment of the present invention provides is introduced, described belowly determines with above-described, the device of MRP determines that the method for MRP can mutual corresponding reference.
The structured flowchart of the device of the determination MRP that Fig. 4 provides for the embodiment of the present invention, the device with reference to Fig. 4 determination MRP can comprise:
Pre-established module 100, for setting up material substitution relation in advance, described material substitution relation supports that the mutual circulation between material substitutes;
Extraction module 200, for extracting Bill of Material (BOM) from database;
Low Level Code computing module 300, for being calculated the Low Level Code of material by described material substitution relation, the grade of material mutual circulation substituted is set to identical, automatically exits circulation when cycle calculations Low Level Code forms a complete closed loop;
Determination module 400, for calculating the demand of the material of each level according to the ordinal relation of described Low Level Code, determines MRP.
The device determining MRP provided by the present invention, by setting up material substitution relation in advance, extracts Bill of Material (BOM) from database; Calculate the Low Level Code of material by material substitution relation, the grade of material mutual circulation substituted is set to identical, automatically exits circulation when cycle calculations Low Level Code forms a complete closed loop; Calculate the demand of the material of each level according to the ordinal relation of Low Level Code, determine MRP.The device determining MRP provided by the present invention, material substitution relation supports that Matter Transfer substitutes, and Low Level Code calculates also, and support circulation is alternative, the situation of material A substitute materials B or material B substitute materials A is only occurred on the same day, the situation of the material B substitute materials A simultaneously of material A substitute materials B on the same day can not be there is, thus avoid and be absorbed in endless loop.
As a kind of embodiment, provided by the present inventionly determine in the device of MRP, shown in the structured flowchart determining determination module in the device of MRP as Fig. 5 is provided by the present invention, above-mentioned determination module 400 may further include:
Acquiring unit 401, for obtaining the demand bills data of material;
Computing unit 402, for by described demand bills data, calculates the net demand data of described material;
Generation unit 403, for the ordinal relation by described net demand data and described Low Level Code, carries out analog computation to estimate in Preset Time, generates described MRP.
As a kind of embodiment, described material substitution relation can comprise: the material code of Bill of Material (BOM) ISN, Bill of Material (BOM) numbering, the first material, record separately ISN, as the second material code of the substitute materials of described first material and alternative consumption.
Above-mentioned generation unit 403 can be specifically for:
The tank farm stock of the first material in Bill of Material (BOM) and described net demand data are compared, when described tank farm stock is less than described net demand data, searching between described first material can the tank farm stock of the second material of phase trans-substitution, calculates described estimate.
Above-mentioned Low Level Code computing module 300 can be specifically for:
From described Bill of Material (BOM), extract material subordinate relation, set up temporary table, and successively restrain described temporary table, the convergence process based on described temporary table calculates the Low Level Code of described material.
To sum up, the present invention effectively can solve MRP cipher rounds and substitute the problem occurring endless loop, and meeting the multiple material of enterprise can the demand of phase trans-substitution.The present invention can according to the stock of each alternative material, correctly calculates material and quantity that enterprise need purchase or produce, decreases manual intervention, make inventory structures reach optimum.
In this instructions, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiment, between each embodiment same or similar part mutually see.For device disclosed in embodiment, because it corresponds to the method disclosed in Example, so description is fairly simple, relevant part illustrates see method part.
Professional can also recognize further, in conjunction with unit and the algorithm steps of each example of embodiment disclosed herein description, can realize with electronic hardware, computer software or the combination of the two, in order to the interchangeability of hardware and software is clearly described, generally describe composition and the step of each example in the above description according to function.These functions perform with hardware or software mode actually, depend on application-specific and the design constraint of technical scheme.Professional and technical personnel can use distinct methods to realize described function to each specifically should being used for, but this realization should not thought and exceeds scope of the present invention.
The software module that the method described in conjunction with embodiment disclosed herein or the step of algorithm can directly use hardware, processor to perform, or the combination of the two is implemented.Software module can be placed in the storage medium of other form any known in random access memory (RAM), internal memory, ROM (read-only memory) (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technical field.
Determine that the method for MRP and device are described in detail to provided by the present invention above.Apply specific case herein to set forth principle of the present invention and embodiment, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improve and modify and also fall in the protection domain of the claims in the present invention.
Claims (10)
1. determine a method for MRP, it is characterized in that, comprising:
Set up material substitution relation in advance, described material substitution relation supports that the mutual circulation between material substitutes;
Bill of Material (BOM) is extracted from database;
Calculated the Low Level Code of material by described material substitution relation, the grade of material mutual circulation substituted is set to identical, automatically exits circulation when cycle calculations Low Level Code forms a complete closed loop;
Calculate the demand of the material of each level according to the ordinal relation of described Low Level Code, determine MRP.
2. determine the method for MRP as claimed in claim 1, it is characterized in that, the described ordinal relation according to described Low Level Code calculates the demand of the material of each level, determines that MRP comprises:
Obtain the demand bills data of material;
By described demand bills data, calculate the net demand data of described material;
By the ordinal relation of described net demand data and described Low Level Code, analog computation is carried out to estimate in Preset Time, generates described MRP.
3. determine the method for MRP as claimed in claim 2, it is characterized in that, described material substitution relation comprises: the material code of Bill of Material (BOM) ISN, Bill of Material (BOM) numbering, the first material, record separately ISN, as the second material code of the substitute materials of described first material and alternative consumption.
4. determine the method for MRP as claimed in claim 2, it is characterized in that the described ordinal relation by described net demand data and described Low Level Code is carried out analog computation to estimate in Preset Time, generated described MRP and comprise:
The tank farm stock of the first material in Bill of Material (BOM) and described net demand data are compared, when described tank farm stock is less than described net demand data, searching between described first material can the tank farm stock of the second material of phase trans-substitution, calculates described estimate.
5. the method for the determination MRP as described in any one of Claims 1-4, is characterized in that, the described Low Level Code by described material substitution relation calculating material comprises:
From described Bill of Material (BOM), extract material subordinate relation, set up temporary table, and successively restrain described temporary table, the convergence process based on described temporary table calculates the Low Level Code of described material.
6. determine a device for MRP, it is characterized in that, comprising:
Pre-established module, for setting up material substitution relation in advance, described material substitution relation supports that the mutual circulation between material substitutes;
Extraction module, for extracting Bill of Material (BOM) from database;
Low Level Code computing module, for being calculated the Low Level Code of material by described material substitution relation, the grade of material mutual circulation substituted is set to identical, automatically exits circulation when cycle calculations Low Level Code forms a complete closed loop;
Determination module, for calculating the demand of the material of each level according to the ordinal relation of described Low Level Code, determines MRP.
7. determine the device of MRP as claimed in claim 6, it is characterized in that, described determination module comprises:
Acquiring unit, for obtaining the demand bills data of material;
Computing unit, for by described demand bills data, calculates the net demand data of described material;
Generation unit, for the ordinal relation by described net demand data and described Low Level Code, carries out analog computation to estimate in Preset Time, generates described MRP.
8. determine the device of MRP as claimed in claim 7, it is characterized in that, described material substitution relation comprises: the material code of Bill of Material (BOM) ISN, Bill of Material (BOM) numbering, the first material, record separately ISN, as the second material code of the substitute materials of described first material and alternative consumption.
9. determine the device of MRP as claimed in claim 8, it is characterized in that, described generation unit specifically for:
The tank farm stock of the first material in Bill of Material (BOM) and described net demand data are compared, when described tank farm stock is less than described net demand data, searching between described first material can the tank farm stock of the second material of phase trans-substitution, calculates described estimate.
10. the device of the determination MRP as described in any one of claim 6 to 9, is characterized in that, Low Level Code computing module specifically for:
From described Bill of Material (BOM), extract material subordinate relation, set up temporary table, and successively restrain described temporary table, the convergence process based on described temporary table calculates the Low Level Code of described material.
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| CN108256768A (en) * | 2018-01-17 | 2018-07-06 | 长安大学 | A kind of hydraulic tube piece material requirement management system and method |
| CN109815547A (en) * | 2018-12-26 | 2019-05-28 | 深圳市优必选科技有限公司 | A kind of resistance replacement method, device and the terminal device of material BOM table |
| CN109978337A (en) * | 2019-02-27 | 2019-07-05 | Oppo广东移动通信有限公司 | Electronic device, the device for having store function, resource management system and management-control method |
| CN111199367A (en) * | 2018-11-19 | 2020-05-26 | 鸿富锦精密电子（成都）有限公司 | Material reject ratio monitoring device and method |
| CN112801448A (en) * | 2020-12-24 | 2021-05-14 | 苏州慧工云信息科技有限公司 | Material demand distribution method, device and system and storage medium |
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Application publication date: 20160203 |