Complex system electronic component unification method

Abstract

The invention discloses a complex system electronic component unification method, aiming at a complex system, electronic components are divided layer by layer according to a large class, a middle class, a small class and a fine class, and an electronic component selection catalogue is constructed aiming at the divided fine class and comprises the fine class, the unification specification and the model specification of the electronic components; establishing electronic component unified type indexes; the unified indexes comprise the electronic component type selection concentration ratio PCR, the type spectrum coverage rate CVRP and the specification compression ratio RRPS. Evaluating each electronic component in an electronic component list selected by the equipment according to the established selection directory to obtain a unified type index of each electronic component under each unified type specification; setting a threshold value for the unified index, and judging whether the unified index of each electronic component meets the set threshold value or not; and removing the electronic components which do not conform to the unified indexes out of the selected catalog, reselecting the electronic components with the unified indexes smaller than a threshold value, and updating the selected catalog to achieve the unified purpose.

Description

Technical Field

[0001] The invention relates to a unified method for electronic components of a complex system, belonging to the technical field of electronic components. Background Art

[0002] Electronic components are the basis for the development of various complex systems. Electronic components with the same functional performance are often produced by multiple manufacturers. For cost control and shortened delivery cycle considerations, it is hoped that the electronic components selected for complex systems come from centralized manufacturers as much as possible. However, in the development process of complex systems, due to the involvement of different development units and different designers, the types and manufacturers of electronic components selected by designers to achieve the same function are different, resulting in a wide variety of electronic components selected by the system, which in turn affects procurement costs, delivery cycles, etc. For example, in the development process of a certain type of electronic equipment, due to the lack of constraints and guidance on the selection of electrical connectors at the system level, the selection of electrical connectors can be as high as more than 1,000 varieties, involving more than 10 manufacturers, but 80% of the connectors are used in quantities of less than 10, resulting in small batches and multiple sub-samples, which brings difficulties to procurement and matching, and seriously affects the development process of the equipment. Therefore, in the development process of complex systems, it is necessary to standardize the functional performance, manufacturers, etc. of the selected electronic components to reduce the number of electronic component selections and reduce the complexity of the system.

[0003] Currently, in the process of complex system development, there is a lack of methods for quantitative evaluation of the unified effects of electronic components, that is, complex system development units are unable to coordinate the electronic component selection results between different development units, different subsystems and single-machine units. Summary of the invention

[0004] The technical problem solved by the present invention is: to overcome the shortcomings of the prior art, to provide a unified method for electronic components of complex systems, to unify the electronic components used in complex systems, to reduce the variety of electronic components used, and to concentrate the component selection on preferred and mature component products, thereby improving the selection concentration, ensuring the supply of components, and reducing the overall cost.

[0005] The technical solution of the present invention is: a method for unifying electronic components of a complex system, comprising:

[0006] S1: For a complex system, construct an electronic component classification. According to the functional performance and structural characteristics of electronic components, the electronic component classification and category codes are divided into major categories, medium categories, minor categories, and detailed categories layer by layer. According to the last level of classification of electronic component classification, a selection catalog is constructed. The selection catalog includes electronic component categories, unified specifications, and model specifications;

[0007] S2: Establish a unified index system for electronic components to constrain and guide the selection of electronic components in the process of complex system development;

[0008] S3: According to the selection catalog established in step S1, the list of electronic components selected for the equipment is evaluated according to the unified specifications, and the unified indicators of each electronic component under each unified specification are obtained, and a threshold is set for the unified indicator to determine whether the unified indicator of each electronic component meets the set threshold;

[0009] S4: The electronic components that do not meet the unified indicators are removed from the selection catalog, and the electronic components whose unified indicators are less than the threshold are reselected, and the selection catalog is updated to achieve the purpose of unification.

[0010] Preferably, the integrated indicators include: electronic component selection concentration PCR, spectrum coverage CVRP, and specification compression rate RRPS.

[0011] Preferably, the selection concentration PCR refers to the number of times that specific models and specifications of electronic components under a specified category of electronic components are selected in different subsystems or devices in a specified system, and the proportion of the number of times all models and specifications of electronic components under the same category are selected.

[0012] Preferably, the model spectrum coverage ratio CVRP refers to the coverage ratio of the unified target model specifications planned in the preferred model spectrum of electronic components to the model specifications in the component selection catalog;

[0013] This indicator can objectively reflect the consistency between the current status of component selection and the spectrum planning.

[0014] Preferably, the specification compression rate RRPS refers to the ratio of the number of reduced specifications of component models of a specified component category after unification to the number of specifications before unification.

[0015] Preferably, the preliminary selection catalog of electronic components includes quality grade, packaging form, manufacturer, and measurement unit.

[0016] Preferably, the unified specification is used as the specification name for a series of electronic components, representing a series of components that have the same functions and the same or similar key performance parameters of the electronic components, and can in principle achieve mutual functional substitution.

[0017] Preferably, when naming the unified specification: under the same electronic component subcategory, electronic components that can be used interchangeably are classified into the same subcategory, and the electronic components under the subcategory are given a unified name, which is the unified specification;

[0018] When classifying electronic components, reference can be made to their functional performance, structural characteristics and manufacturing process, and the classification standards shall adopt national standards or industry standards.

[0019] Preferably, when setting thresholds for unified indicators, the overall unit for the development of complex systems can set a unified threshold based on the unified indicators of each electronic component, and can also specify different thresholds for PCR, CVRP and RRPS.

[0020] Compared with the prior art, the present invention has the following advantages:

[0021] (1) The present invention establishes a unified component index system during the development of complex systems, defines a set of products with the same functional performance in the same electronic component classification category in the same unified specification, and continuously iterates toward the optimal product selection through the constraints of the unified index system at each stage of complex system development, forming a system electronic component selection catalog to guide system development work.

[0022] (2) The present invention provides a method for standardizing electronic components for complex systems. It comprehensively reflects the selection of electronic components among various subsystems and single machines in complex systems from different angles, including the objective results of a certain category of components in selection, the standardization compression process in the time dimension, and the overall coverage effect of spectrum planning and standardization from three indicators, namely PCR, CVRP, and RRPS. It promotes the application of mainstream electronic components and provides a complete solution for component standardization. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The figure is a flow chart of the method of the present invention. DETAILED DESCRIPTION

[0024] The present invention proposes the definition and calculation method of unified quantitative indicators such as component selection concentration ratio (PCR), spectrum coverage rate (CVRP), and specification compression rate (RRPS), and gives the logical relationship between the above-mentioned quantitative evaluation indicators, laying a foundation for carrying out quantitative evaluation and continuous improvement of component unified effects.

[0025] The technical solution of the present invention is: a method for standardizing electronic components for complex systems, which provides a new idea for standardizing electronic components for complex systems based on the principle of centralized selection of mature components, and aims to reduce the variety of electronic components used from standardization-related evaluation indicators such as component concentration, compression rate, and coverage. The method includes the following steps:

[0026] S1: For a complex system, construct an electronic component classification. According to the functional performance and structural characteristics of electronic components, the integrated circuit classification is divided into major categories, medium categories, minor categories, and detailed categories layer by layer. According to the last level of electronic component classification, a preliminary selection catalog of electronic components is constructed, including electronic component categories, unified specifications, model specifications, and other reference information (such as quality grade, packaging form, manufacturer, measurement unit, etc.). The categories of electronic components can be classified according to the functional performance, structural characteristics, and manufacturing process of electronic components. The classification standards can be, for example, national standards or industry standards; for the same electronic component subcategory, electronic components that can be used interchangeably are classified into the same subcategory, and the electronic components under this subcategory are given a unified name, which is the unified specification; the unified specification is the specification name of a series of components, which represents a series of components with the same functions and the same or similar key performance parameters, and can be functionally replaced with each other in principle.

[0027] S2: Establish a unified index system for electronic components to constrain and guide the selection of electronic components in the process of complex system development. The unified index system includes three indicators: part concentration ratio (PCR), spectrum coverage (CVRP), and reducing ratio of part spec (RRPS). The selection concentration refers to the number of times the specific model and specification electronic components under the specified component category are selected in different subsystems / equipment in the specified system, and the proportion of the number of times the electronic components of all models and specifications selected under the same category are selected; the proportion of the specifications and quantities of the top n electronic components with the largest number of selected specifications and the highest proportion in all components of the same type. Usually, n is the target model, specification, and quantity recommended for the unified selection of a certain category of electronic components; the spectrum coverage refers to the coverage ratio of the unified target model specifications planned in the preferred spectrum of electronic components and the model specifications in the component selection catalog. This indicator can objectively reflect the consistency between the current status of component selection and the model spectrum planning; the specification compression rate refers to the ratio of the number of reduced specifications of component models in a specified component category after the unified model is implemented to the number of specifications before the unified model;

[0028] S3: Based on the catalog established in step 1, the list of electronic components selected for the equipment (such as system, subsystem, stand-alone machine, board, etc.) is evaluated using the unified specifications to obtain the unified indicators of each specification of electronic components, including PCR, CVRP and RRPS. For electronic components whose PCR, CVRP and RPPS are less than a certain threshold (such as 70%), reselect them to achieve the purpose of unification.

[0029] S4: Update the selection catalog based on the standardization results of electronic components, and remove the electronic components that do not meet the standardization indicators from the selection catalog.

[0030] Example:

[0031] The present invention will be further described below in conjunction with the embodiments.

[0032] This embodiment takes the standardization of a four-way 2-input NAND gate logic circuit for a system development as an example, and provides a method for standardizing electronic components for a complex system. The present invention is aimed at standardizing electronic components for complex systems, and aims to reduce the variety of electronic components used, concentrate component selection on preferred and mature component products, improve selection concentration, ensure component supply, and reduce the overall cost of components.

[0033] S1: For a complex system, build a preliminary selection catalog of electronic components, including electronic component categories, unified specifications, model specifications, quality grades, packaging forms, manufacturers, measurement units, etc. For military electronic components, the categories of electronic components can refer to the "Classification and Code of Aerospace Electronic Components" (QJA40.1), and be divided into major categories, medium categories, minor categories, and detailed categories according to the functional performance and structural characteristics of electronic components. For example, the CMOS circuit subcategory mainly refers to 4000 series logic, 54HC, 54HCT, 54AC and other logic gate circuits, as shown in Table 1.

[0034] For electronic components in the CMOS circuit category, take the four-way 2-input NAND gate logic circuit as an example. The manufacturers of this product include A unit, B unit, C unit and several other manufacturers. Different manufacturers manufacture and produce according to the same military specification or aerospace component standard, and the functions of the products can be interchangeable. For the four-way 2-input NAND gate logic circuit provided by different manufacturers, the name is a unified unified specification, which can be 54AC00, see Table 2.

[0035] Table 1 Integrated circuit classification and category code

[0036]

[0037]

[0038] Table 2 Preliminary selection catalog structure of electronic components

[0039]

[0040]

[0041] S2: Establish a unified index system such as PCR, CVRP and RRPS for electronic components to constrain and guide the selection of electronic components during the development of complex systems.

[0042] S3: Each unit of complex system development carries out the selection of electronic components according to the selection catalog established in step 1. After completing the preliminary selection, the electronic component selection lists submitted by different system development units are evaluated using unified indicators, and the unified indicators of electronic components of the three manufacturers under the 54AC00 unified specification can be obtained. The overall unit of complex system development can set a threshold (such as 70%) according to the unified indicator of each electronic component, or specify different thresholds for PCR, CVRP and RRPS. For PCR, A54AC00ABC with CVRP and RPPS greater than 70% is selected as the preferred electronic component for unified selection; for PCR, two electronic components B54AC00RFB and C54AC00JNK with CVRP and RPPS less than 70% should be reselected, as shown in Table 3.

[0043] S4: Based on the results of the electronic component standardization, the electronic component selection catalog of the system is updated. Electronic components that do not meet the standardization indicators can be removed from the selection catalog or limited in the selection attributes as a limited selection, as shown in Table 3. The updated electronic component selection catalog serves as the basis for the selection of electronic components for complex systems, thereby achieving the purpose of overall standardization of the system.

[0044] Table 3 Electronic components selection catalog

[0045]

[0046]

[0047] The contents not described in detail in the specification of the present invention belong to the prior art known to the professional and technical personnel in this field.

Claims

1. A method for standardizing electronic components of complex systems, characterized in that include: S1: For a complex system, construct an electronic component classification. According to the functional performance and structural characteristics of electronic components, the electronic component classification and category codes are divided into major categories, medium categories, minor categories, and detailed categories layer by layer. According to the last level of classification of electronic component classification, a selection catalog is constructed. The selection catalog includes electronic component categories, unified specifications, and model specifications; S2: Establish a unified index system for electronic components to constrain and guide the selection of electronic components in the process of complex system development; S3: According to the selection catalog established in step S1, the list of electronic components selected for the equipment is evaluated according to the unified specifications, and the unified indicators of each electronic component under each unified specification are obtained, and a threshold is set for the unified indicator to determine whether the unified indicator of each electronic component meets the set threshold; S4: The electronic components that do not meet the unified indicators are removed from the selection catalog, and the electronic components whose unified indicators are less than the threshold are reselected, and the selection catalog is updated to achieve the purpose of unification.

2. A method for standardizing electronic components of complex systems according to claim 1, characterized in that: The integrated indicators include: electronic component selection concentration PCR, spectrum coverage CVRP, and specification compression rate RRPS.

3. A method for standardizing electronic components of complex systems according to claim 2, characterized in that: Selection concentration PCR refers to the number of times specific models and specifications of electronic components under a specified category of electronic components are selected in different subsystems or equipment in a specified system, and the proportion of the number of times all models and specifications of electronic components under the same category are selected.

4. A method for standardizing electronic components of complex systems according to claim 2, characterized in that: Model spectrum coverage ratio CVRP refers to the coverage ratio of the unified target model specifications planned in the preferred model spectrum of electronic components and the model specifications in the component selection catalog; This indicator can objectively reflect the consistency between the current status of component selection and the spectrum planning.

5. A method for standardizing electronic components of complex systems according to claim 2, characterized in that: The specification compression rate RRPS refers to the ratio of the number of reduced specifications of component models in a specified component category after standardization to the number of specifications before standardization.

6. A method for standardizing electronic components of complex systems according to claim 1, characterized in that: The preliminary selection catalog of electronic components includes quality grade, packaging form, manufacturer, and measurement unit.

7. A method for standardizing electronic components of complex systems according to claim 1, characterized in that: The unified specification is the name of the specification for a series of electronic components, representing a series of components that have the same functions and the same or similar key performance parameters, and can, in principle, replace each other's functions.

8. The method for standardizing electronic components of a complex system according to claim 1, characterized in that: When naming unified specifications: Under the same electronic component category, electronic components that can be used interchangeably are classified into the same subcategory, and the electronic components under the subcategory are given a unified name, which is the unified specification; When classifying electronic components, reference can be made to their functional performance, structural characteristics and manufacturing process, and the classification standards shall adopt national standards or industry standards.

9. The method for standardizing electronic components of a complex system according to claim 1, characterized in that: When setting thresholds for unified indicators, the overall unit responsible for the development of complex systems can set unified thresholds based on the unified indicators of each electronic component, or specify different thresholds for PCR, CVRP and RRPS.

Images