Material data transmission method, device and computer readable storage medium

Abstract

The present invention discloses a material data transmission method, device and computer-readable storage medium, the method comprising: obtaining the EBOM and MBOM of a target vehicle; extracting the component composition relationship of each first assembly sourced from an outsourced assembly from the MBOM; extracting the assembly sub-component relationship of each target assembly from the EBOM according to the component composition relationship of each first assembly, the target assembly including each first assembly and the second assembly in the MBOM except all first assemblies and their combined sub-components; sending all assembly sub-component relationships to a target system. The embodiment of the present invention realizes the extraction and transmission of the relationship between assemblies and sub-components in vehicle material data, thereby effectively avoiding the generation, processing and transmission of redundant data.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle manufacturing, and in particular to a material data transmission method, device and computer-readable storage medium. Background Art

[0002] In the current vehicle manufacturing process, the iBOM (integrated BOM) system transmits the MBOM (Manufacturing BOM) containing only the procurement-level assembly information to the SAP (System Applications and Products) system, and SAP transmits the order containing the incoming assembly to the MOM (Manufacturing Operation Management) system and other downstream systems. However, the inventors found in the process of implementing the present invention that in the actual manufacturing process, since the downstream system needs to obtain specific sub-components and their assembly information to support the development of traceability business, but the MBOM does not contain such information, the iBOM system is required to send the EBOM (Engineering Bill of Material) containing such information to the downstream system. However, since the EBOM contains the material data of all the part structures, the amount of information is large, which will lead to the generation, processing and transmission of redundant data. Summary of the invention

[0003] The embodiments of the present invention provide a material data transmission method, device and computer-readable storage medium, which realize the extraction and transmission of the relationship between assemblies and sub-components in vehicle material data, thereby effectively avoiding the generation, processing and transmission of redundant data.

[0004] In a first aspect, an embodiment of the present invention provides a method for transmitting material data, including:

[0005] Obtain the design bill of materials EBOM and manufacturing bill of materials MBOM of the target vehicle;

[0006] Extracting the component composition relationship of each first assembly that is an outsourced assembly from the MBOM; wherein the component composition relationship includes a correspondence between the serial number of the first assembly and the serial numbers and quantities of all its component sub-components;

[0007] According to the component composition relationship of each first assembly, the assembly sub-component relationship of each target assembly is extracted from the EBOM; wherein the target assembly includes each first assembly and the second assembly in the MBOM except all the first assemblies and their combined sub-components; the assembly sub-component relationship includes the correspondence between the number of the target assembly and the numbers of all sub-components that meet the preset conditions and the first quantity required to manufacture a single copy of the target assembly;

[0008] All of the assembly-subcomponent relationships are sent to the target system.

[0009] As an improvement of the above solution, the extracting the component composition relationship of each first assembly sourced from the MBOM as an outsourced component includes:

[0010] According to the sources, vehicle type configurations and component groupings of each assembly unit in the MBOM, determine each first assembly sourced as an outsourced component and a combination sub-component matching the vehicle type configuration and component grouping;

[0011] According to the material information of each first assembly and its combined sub-components in the MBOM, a component composition relationship of each first assembly is established.

[0012] As an improvement of the above solution, the preset condition includes: the status information in the EBOM is in the effective release status.

[0013] As an improvement of the above solution, the preset condition also includes: the key characteristic information in the EBOM includes parameters for characterizing components that belong to precise traceability.

[0014] As an improvement of the above solution, according to the component composition relationship of each first assembly, the assembly sub-component relationship of each target assembly is extracted from the EBOM, specifically:

[0015] For each assembly unit in the MBOM, the sub-components of each level of the assembly unit are retrieved from the EBOM to determine whether they meet the preset conditions, and each time a sub-component is retrieved to meet the preset conditions, a relationship building process is performed to obtain an assembly sub-component relationship; wherein the relationship building process includes:

[0016] Obtaining the usage of the subcomponent and the usage of all upper-level subcomponents from the EBOM to calculate a second quantity required to manufacture a single copy of the assembly unit;

[0017] According to each of the component composition relationships, determining whether the assembly unit belongs to the second assembly;

[0018] If yes, take the assembly unit as the target assembly and take the second quantity as the first quantity;

[0019] If not, then according to the component composition relationship of each first assembly and the number of the assembly unit, determine the number of the first assembly to which the assembly unit belongs and the usage of the assembly unit, and use the first assembly to which the assembly unit belongs as the target assembly; and calculate the first quantity based on the usage of the assembly unit and the second quantity;

[0020] A correspondence between the number of the target assembly and the second attribute information of the sub-component is established according to the first quantity, the material information of the sub-component in the EBOM and the number of the target assembly.

[0021] As an improvement of the above solution, the component composition relationship also includes a corresponding relationship between the serial number of each of the combined sub-components and its key characteristic information for characterizing product characteristics.

[0022] As an improvement of the above solution, the assembly sub-component relationship also includes a corresponding relationship between the serial number of each sub-component that meets the preset conditions and its key characteristic information for characterizing product characteristics.

[0023] In a second aspect, an embodiment of the present invention provides a material data transmission device, comprising a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, wherein when the processor executes the computer program, the material data transmission method as described in any one of the first aspects is implemented.

[0024] In a third aspect, an embodiment of the present invention provides a computer-readable storage medium, wherein the computer-readable storage medium includes a stored computer program, wherein when the computer program is running, the device where the computer-readable storage medium is located is controlled to execute the material data transmission method as described in any one of the first aspects.

[0025] Compared with the prior art, the material data transmission method, device and computer-readable storage medium provided in the embodiments of the present invention extract the component composition relationship of each first assembly that is an outsourced component from the manufacturing material bill MBOM of the target vehicle, and based on the component composition relationship of each first assembly, extract the assembly-sub-component relationship between each first assembly and the second assembly except all first assemblies and their combined sub-components in the MBOM from the design material bill EBOM of the target vehicle, and then send all assembly-sub-component relationships to the target system, thereby realizing the extraction and transmission of the relationship between assemblies and sub-components in the vehicle material data, and effectively avoiding the generation, processing and transmission of redundant data. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a flow chart of a material data transmission method provided by an embodiment of the present invention;

[0027] Figure 2 It is a schematic diagram of the component composition relationship of an assembly provided by an embodiment of the present invention;

[0028] Figure 3 is a schematic diagram of the relationship between assembly sub-components of an assembly provided by an embodiment of the present invention;

[0029] Figure 4 It is a structural schematic diagram of a material data transmission device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figure 1 , is a flow chart of a material data transmission method provided by an embodiment of the present invention, comprising:

[0032] An embodiment of the present invention provides a material data transmission method, which can be executed by an iBOM system, and specifically includes:

[0033] S11, obtaining the design bill of materials EBOM and the manufacturing bill of materials MBOM of the target vehicle;

[0034] S12, extracting the component composition relationship of each first assembly that is an outsourced component from the MBOM; wherein the component composition relationship includes the correspondence between the number of the first assembly and the numbers and quantities of all its component sub-components;

[0035] S13, extracting the assembly sub-component relationship of each target assembly from the EBOM according to the component composition relationship of each first assembly; wherein the target assembly includes each first assembly and the second assembly in the MBOM except all the first assemblies and their combined sub-components; the assembly sub-component relationship includes the correspondence between the number of the target assembly and the numbers of all sub-components meeting the preset conditions and the first quantity required to manufacture a single copy of the target assembly;

[0036] S14, sending all the assembly sub-component relationships to the target system.

[0037] Exemplarily, iBOM integrates the design bill of materials EBOM and manufacturing bill of materials MBOM of each vehicle model, and can obtain the design bill of materials EBOM and manufacturing bill of materials MBOM according to the model of the target vehicle. Among them, the design bill of materials EBOM can include the hierarchical relationship between each assembly unit, as well as the part number, hierarchy, purpose of use, quantity and key characteristic information of each assembly unit for characterizing product characteristics; the manufacturing bill of materials MBOM can include the number of each assembly unit, purpose of use, part type, quantity, use rules for characterizing vehicle model configuration, source, assembly grouping and key characteristic code for characterizing product characteristics and other material information.

[0038] Exemplarily, the target system in this embodiment may be a downstream system of the iBOM system, such as a MOM system.

[0039] Among them, the preset conditions can be set according to actual production needs and are not limited here.

[0040] It should be noted that, in the process of vehicle manufacturing, the outsourced assembly may enter the factory in the form of a composite part, and the development of the accurate traceability business of the target part requires the relationship between the target part and its factory-entry assembly for traceability. In this regard, this embodiment extracts the composite component relationship of each first assembly sourced from the outsourced composite part from the manufacturing material list MBOM of the target vehicle, so as to accurately establish the relationship between the target assembly and its sub-components at the factory level, and then sends all the assembly-sub-component relationships to the target system, thereby realizing the extraction and transmission of the relationship between the factory-entry assembly and the sub-component, providing accurate information for the traceability business. The target system can carry out the traceability business through the assembly-sub-component relationship sent by the iBOM system and the assembly information in the order. At the same time, the iBOM system does not need to transfer all the part structures in the EBOM to the downstream, avoiding the generation, processing and transmission of redundant data. After testing, the data transmission volume is reduced by about 70%, and the iBOM system directly transmits the assembly-sub-component relationship to the MOM, without the need to transmit data through intermediate systems such as the SAP system, thereby improving the data transmission efficiency.

[0041] As one of the optional embodiments, extracting the component composition relationship of each first assembly that is a subcontracted component from the MBOM includes:

[0042] S121, according to the source, vehicle type configuration and component grouping of each assembly unit in the MBOM, determine each first assembly sourced as an outsourced component and a combined sub-component matching the vehicle type configuration and component grouping;

[0043] S122: Establish a component composition relationship of each first assembly according to the material information of each first assembly and its combined sub-components in the MBOM.

[0044] It should be noted that the codes of the same component grouping represent components belonging to the same category, and the usage rules correspond to the applicable vehicle model configuration of the assembly. For an assembly with two matching component groups, if the vehicle model configuration of the assembly sourced from the outsourced sub-component completely covers the vehicle model configuration of the assembly sourced from the outsourced component, it means that the vehicle model configurations of the two match, that is, the outsourced sub-component assembly becomes a combined sub-component of the outsourced component assembly.

[0045] For example, referring to Table 1, Pi and Pj are assemblies that have been released in MBOM, and the source of Pi is CSMT ASM (Consignment Assembly), that is, Pi belongs to the outsourced assembly at the factory level, and the source of Pj is CSMT (Consignment Subpart), that is, Pj belongs to the outsourced subpart assembly, and the assembly grouping and vehicle model configuration of Pi and Pj are matched, then according to the material information of Pi and Pj in MBOM, the structural relationship between Pi and Pj is established to obtain the assembly composition relationship of the outsourced assembly, such as Figure 2 shown.

[0046] Table 1 MBOM of a vehicle

[0047]

[0048] In this embodiment, the component composition relationship of each first assembly can be accurately established through the source of each assembly unit, vehicle type configuration and component grouping.

[0049] As one of the optional embodiments, the preset condition includes: the status information in the EBOM is in a valid release status.

[0050] It should be noted that in the actual vehicle manufacturing process, if the material is in an unreleased state, it means that the material has not been used in production, that is, there is no need to trace it. This embodiment sets the preset condition that the status information included in the EBOM is in an effective release state, which can reduce the establishment and transmission of unnecessary assembly sub-component relationships.

[0051] Furthermore, the preset condition also includes: the key characteristic information in the EBOM includes parameters for characterizing components that are precisely traceable.

[0052] Exemplarily, the parameters used to characterize components that are precisely traceable include TRA / TRC / AVG; wherein TRA indicates that components can be precisely traced through label barcodes, TRC indicates that components can be precisely traced through label barcodes and sub-components are visible, and AVG indicates that components can be precisely traced through built-in electronic chips / modules.

[0053] It is impossible to carry out accurate traceability services for sub-components that are not accurately traceable parts. Therefore, this embodiment sets preset conditions and also includes key characteristic information in the EBOM that contains parameters for characterizing accurately traceable parts. This can avoid establishing relationships between sub-components that cannot be accurately traced and assemblies, thereby reducing unnecessary establishment and transmission of assembly-sub-component relationships.

[0054] As one of the optional embodiments, according to the component composition relationship of each first assembly, the assembly sub-component relationship of each target assembly is extracted from the EBOM, specifically:

[0055] For each assembly unit in the MBOM, the sub-components of each level of the assembly unit are retrieved from the EBOM to determine whether they meet the preset conditions, and each time a sub-component is retrieved to meet the preset conditions, a relationship building process is performed to obtain an assembly sub-component relationship; wherein the relationship building process includes:

[0056] S21, obtaining the usage of the subcomponent and the usage of all upper-level subcomponents from the EBOM to calculate the second quantity required to manufacture a single copy of the assembly unit;

[0057] S22, judging whether the assembly unit belongs to the second assembly according to each of the component composition relationships;

[0058] S23, if yes, take the assembly unit as the target assembly, take the second quantity as the first quantity, and jump to step S25;

[0059] S24, if not, then determine the number of the first assembly to which the assembly unit belongs and the amount of the assembly unit according to the component composition relationship of each of the first assemblies and the number of the assembly unit, and use the first assembly to which the assembly unit belongs as the target assembly; and calculate the first quantity based on the amount of the assembly unit and the second quantity, and jump to step S25;

[0060] S25. Establish a correspondence between the number of the target assembly and the second attribute information of the sub-component according to the first quantity, the material information of the sub-component in the EBOM, and the number of the target assembly.

[0061] Specifically, all sub-components of each level under each assembly unit in the EBOM may be retrieved layer by layer using the numbers of all assembly units in the MBOM as indexes.

[0062] For example, referring to Table 2, in the process of searching for sub-components of each level for the assembly unit numbered Pj, it is found that the zth sub-component P of the mth level of Pj mz The key feature information has been released and includes TRA / TRC / AVG, indicating P mz If the preset conditions are met, P is obtained from EBOM. mz The usage of and the usage of all its upper-level sub-components, and calculate their product As P mz Correspondingly, the second quantity required to manufacture a single copy of Pj is calculated; according to each component composition relationship, it is determined whether Pj belongs to the second assembly; since Pj is determined to belong to the combined sub-component of Pi according to the component composition relationship of Pi, it means that Pj does not belong to the second assembly, then according to the component composition relationship of each first assembly and the number Pj of the assembly unit, the first assembly to which the assembly unit belongs, that is, the number of Pi, and the quantity X of Pj are queried, and Pi is used as the target assembly; the product of the quantity X of Pj and the second quantity is calculated as the first quantity. It can be understood that the first quantity is P mz The product of the usage of all upper-level components and the usage of Pj According to the first quantity, P in EBOM mz The material information and the target assembly number Pi, ignoring the intermediate level of Pj, extract P mz Directly build P mz The corresponding relationship with Pi can be used to obtain the relationship between the assembly sub-components, such as Figure 3 shown.

[0063] Table 2 EBOM of a vehicle

[0064]

[0065] In this embodiment, directly establishing the corresponding relationship between the sub-components that meet the preset conditions and each target assembly can avoid the generation of redundant assembly sub-component relationships, effectively reduce the amount of data transmission, and effectively improve the query efficiency and computing power during subsequent tracing.

[0066] As one of the optional embodiments, Figure 2 As shown, the component composition relationship also includes the corresponding relationship between the serial number of each of the combined sub-components and its key characteristic information used to characterize the product characteristics, so as to facilitate subsequent traceability.

[0067] As one of the optional embodiments, Figure 3 As shown, the assembly sub-component relationship also includes the corresponding relationship between the serial number of each sub-component that meets the preset conditions and its key characteristic information used to characterize the product characteristics, so as to facilitate subsequent traceability.

[0068] See also Figure 2 , is a structural diagram of a material data transmission device provided by an embodiment of the present invention.

[0069] An embodiment of the present invention provides a material data transmission device, comprising a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, wherein when the processor executes the computer program, it implements the material data transmission method described in any one of the above embodiments.

[0070] Figure 4 A processor 10 is taken as an example; the processor 10 and the memory 11 in the material data transmission device can be connected by a bus or other means. Figure 4 The example of connecting through bus is taken in the following.

[0071] Exemplarily, the computer program can be divided into one or more modules / units, and the one or more modules / units are stored in the memory and executed by the processor 10 to complete the present invention. The one or more modules / units can be a series of computer program instruction segments that can complete specific functions, and the instruction segments are used to describe the execution process of the computer program in the material data transmission device. For example, the computer program can be divided into a BOM acquisition module for acquiring the design bill of materials EBOM and the manufacturing bill of materials MBOM of the target vehicle; an assembly structure establishment module for extracting the assembly composition relationship of each first assembly sourced from the MBOM as an outsourced assembly; an assembly structure establishment module for extracting the assembly sub-component relationship of each target assembly from the EBOM based on the assembly composition relationship of each first assembly; and an assembly structure transmission module for sending all the assembly sub-component relationships to the target system, that is, the material data transmission method described in the above embodiment.

[0072] The processor 10 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor, etc.

[0073] The memory 11 can be used to store the computer program and / or module, such as the program instructions / modules corresponding to the material data transmission method in the above embodiment of the present invention. The processor 10 realizes various functions of the material data transmission device by running or executing the computer program and / or module stored in the memory 11, and calling the data stored in the memory 11. The memory may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, at least one application required for a function, etc.; the data storage area may store data created according to the use of the terminal, etc. In addition, the memory 11 may include a high-speed random access memory, and may also include a non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a smart memory card (Smart Media Card, SMC), a secure digital (SecureDigital, SD) card, a flash card (Flash Card), at least one disk storage device, a flash memory device, or other volatile solid-state storage devices. In some instances, the memory 11 may further include a memory remotely arranged relative to the processor 10, and these remote memories may be connected to the material data transmission device through a network. Examples of the above network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0074] It should be noted that the principles and technical effects of the embodiments of the present invention are the same as the material data transmission method described in the above embodiments, and will not be described in detail here.

[0075] Another embodiment of the present invention provides a computer-readable storage medium, which includes a stored computer program, wherein when the computer program is running, the device where the computer-readable storage medium is located is controlled to execute the material data transmission method as described in any one of the embodiments of the first embodiment.

[0076] The material data transmission method comprises:

[0077] Obtain the design bill of materials EBOM and manufacturing bill of materials MBOM of the target vehicle;

[0078] Extracting the component composition relationship of each first assembly that is an outsourced assembly from the MBOM; wherein the component composition relationship includes a correspondence between the serial number of the first assembly and the serial numbers and quantities of all its component sub-components;

[0079] According to the component composition relationship of each first assembly, the assembly sub-component relationship of each target assembly is extracted from the EBOM; wherein the target assembly includes each first assembly and the second assembly in the MBOM except all the first assemblies and their combined sub-components; the assembly sub-component relationship includes the correspondence between the number of the target assembly and the numbers of all sub-components that meet the preset conditions and the first quantity required to manufacture a single copy of the target assembly;

[0080] All of the assembly-subcomponent relationships are sent to the target system.

[0081] Of course, a computer-readable storage medium provided in an embodiment of the present invention is not limited to the method operations described above, and can also perform related operations in the material data transmission method provided in any embodiment of the present invention.

[0082] Through the above description of the implementation methods, the technicians in the relevant field can clearly understand that the present invention can be implemented by means of software and necessary general hardware, and 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, and the computer software product can be stored in a computer-readable storage medium, such as a computer floppy disk, read-only memory (ROM), random access memory (RAM), flash memory (FLASH), hard disk or optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, server, or network device, etc.) to execute the methods described in each embodiment of the present invention.

[0083] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

[0084] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A material data transmission method, characterized in that: include: Obtain the design bill of materials EBOM and manufacturing bill of materials MBOM of the target vehicle; Extracting the component composition relationship of each first assembly that is an outsourced assembly from the MBOM; wherein the component composition relationship includes a correspondence between the serial number of the first assembly and the serial numbers and quantities of all its component sub-components; According to the component composition relationship of each first assembly, the assembly sub-component relationship of each target assembly is extracted from the EBOM; wherein the target assembly includes each first assembly and the second assembly in the MBOM except all the first assemblies and their combined sub-components; the assembly sub-component relationship includes the correspondence between the number of the target assembly and the numbers of all sub-components that meet the preset conditions and the first quantity required to manufacture a single copy of the target assembly; For each assembly unit in the MBOM, the sub-components of each level of the assembly unit are retrieved from the EBOM to determine whether they meet the preset conditions, and each time a sub-component is retrieved to meet the preset conditions, a relationship building process is performed to obtain an assembly sub-component relationship; wherein the relationship building process includes: Obtaining the usage of the subcomponent and the usage of all upper-level subcomponents from the EBOM to calculate a second quantity required to manufacture a single copy of the assembly unit; According to each of the component composition relationships, determine whether the assembly unit belongs to the second assembly; and confirm the first quantity based on the determination result; Establishing a correspondence between the number of the target assembly and the second attribute information of the sub-component according to the first quantity, the material information of the sub-component in the EBOM, and the number of the target assembly; All of the assembly-subcomponent relationships are sent to the target system.

2. The material data transmission method according to claim 1, characterized in that: The extracting the component composition relationship of each first assembly sourced from the MBOM as an outsourced component includes: According to the sources, vehicle type configurations and component groupings of each assembly unit in the MBOM, determine each first assembly sourced as an outsourced component and a combination sub-component matching the vehicle type configuration and component grouping; According to the material information of each first assembly and its combined sub-components in the MBOM, a component composition relationship of each first assembly is established.

3. The material data transmission method according to claim 1, characterized in that: The preset condition includes: the status information in the EBOM is in a valid release status.

4. The material data transmission method according to claim 3, characterized in that: The preset condition also includes: the key characteristic information in the EBOM includes parameters for characterizing components that are precisely traceable.

5. The material data transmission method according to claim 1, characterized in that: The first quantity is confirmed based on the judgment result; specifically: If yes, take the assembly unit as the target assembly and take the second quantity as the first quantity; If not, then determine the number of the first assembly to which the assembly unit belongs and the usage of the assembly unit based on the component composition relationship of each of the first assemblies and the number of the assembly unit, and take the first assembly to which it belongs as the target assembly; and calculate the first quantity based on the usage of the assembly unit and the second quantity.

6. The material data transmission method according to claim 1, characterized in that: The component composition relationship also includes the corresponding relationship between the serial number of each of the combined sub-components and its key characteristic information used to characterize product characteristics.

7. The material data transmission method according to claim 1, characterized in that: The assembly sub-component relationship also includes a corresponding relationship between the serial number of each sub-component that meets the preset conditions and its key characteristic information used to characterize product characteristics.

8. A material data transmission device, characterized in that: The method comprises a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, wherein when the processor executes the computer program, the method for transmitting material data as claimed in any one of claims 1 to 7 is implemented.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes a stored computer program, wherein when the computer program is executed, the device where the computer-readable storage medium is located is controlled to execute the material data transmission method according to any one of claims 1 to 7.

Images