Method and device for calculating piping and wiring work amount of electrical system loop

Abstract

The invention relates to the technical field of electrical design, and discloses a method and a device for calculating the piping and wiring work amount of an electrical system loop, aiming at solving the problem of low efficiency and accuracy of the existing scheme, and the scheme mainly comprises the following steps: automatically extracting loop parameters and calculation parameters corresponding to each loop from a system diagram of the electrical system loop; constructing a mapping relation; constructing a bridge three-dimensional model of the building, and determining bridge primitives in the planar graph; automatically extracting pipeline primitives in the planar graph according to the primitives of the starting point distribution box, and marking the extracted pipeline primitives as required piping; determining a bridge starting point and a bridge ending point in the plane graph; determining an optimal bridge path between the bridge starting point and the bridge ending point based on an optimal path algorithm, and marking bridge primitives contained in the optimal bridge path as not needing piping; and according to the marked pipeline primitives and bridge primitives, calculating the piping and wiring work amount in combination with the corresponding calculation parameters. According to the invention, the efficiency and the accuracy of the piping and wiring work amount calculation are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical design, and in particular to a method and device for calculating the piping and wiring engineering quantity of an electrical system circuit. Background Art

[0002] The piping and wiring of the electrical system circuit refers to the installation of the power supply and control lines from the distribution box to each electrical appliance. The piping and wiring engineering quantity is the calculated amount of materials, labor and time required for the piping and wiring engineering of the electrical system circuit. Among them, piping refers to the pipeline system in the construction project, and the common piping forms include bridges. And wiring refers to the line system connecting wires, cables and electrical equipment.

[0003] At present, in the electrical system circuit of the construction project, the calculation scheme of the piping and wiring engineering quantity is usually calculated by the cost personnel according to the circuit one by one, and the calculation basis mainly comes from the system diagram and plan view in the CAD drawing. Specifically, the cost personnel first determine the relationship between the distribution boxes and the various parameters of the circuit to which the distribution boxes belong through the system diagram; then complete the manual calculation of the circuit piping and wiring engineering quantity according to the connection and position relationship of the pipelines and bridges in the plan view. However, when the electrical design is complex and the system circuits are numerous, the manual calculation method will face problems such as low calculation efficiency, low accuracy, and cumbersome data inspection and adjustment. Summary of the invention

[0004] The present invention aims to solve the problems of low efficiency and accuracy in existing piping and wiring engineering quantity calculation schemes, and proposes a piping and wiring engineering quantity calculation method and device for an electrical system circuit.

[0005] The technical solution adopted by the present invention to solve the above technical problems is:

[0006] In a first aspect, the present invention provides a method for calculating the piping and wiring engineering quantity of an electrical system circuit, the method comprising:

[0007] Automatically extract the loop parameters and calculation parameters corresponding to each loop from the system diagram of the electrical system loop, wherein the loop parameters include the number of the starting distribution box, the number of the end distribution box and the loop number, and the calculation parameters include the model specification of the loop and the loop laying method;

[0008] Constructing a mapping relationship, wherein the mapping relationship includes a first mapping relationship between a loop parameter of each loop and a graphic element in the system diagram, and a second mapping relationship between a graphic element in the system diagram and a graphic element in the plan view of each loop;

[0009] Automatically extracting bridge data of each building floor from the plan view, constructing a three-dimensional bridge model of the building according to the bridge data, and determining bridge graphic elements in the plan view according to the three-dimensional bridge model;

[0010] According to the number of the starting distribution box and based on the mapping relationship, the corresponding starting distribution box graphic element is determined in the plan view, and the pipeline graphic elements corresponding to each circuit are automatically extracted from the plan view according to the starting distribution box graphic element, and the extracted pipeline graphic elements are marked as requiring piping;

[0011] In the plan view, the starting point of the bridge of each circuit is determined according to the connection relationship between the pipeline graphic element and the bridge graphic element of each circuit, the corresponding terminal distribution box graphic element is determined in the plan view according to the corresponding terminal distribution box number and based on the mapping relationship, and the terminal of the bridge of each circuit is determined according to the connection relationship between the terminal distribution box graphic element and the bridge graphic element;

[0012] According to the bridge elements in the plan view and based on the optimal path algorithm, the optimal bridge path between the bridge start point and the bridge end point of each loop is determined, and the bridge elements included in the optimal bridge path are determined, and the bridge elements included in the optimal bridge path are marked as not requiring piping;

[0013] Calculate the piping and wiring workload for each circuit based on the marked pipeline elements and bridge elements of each circuit and the corresponding calculation parameters.

[0014] Furthermore, the method further comprises:

[0015] After automatically extracting the loop parameters corresponding to each loop from the system diagram, the corresponding graphic elements in the system diagram are marked in situ, and the in situ marking includes misalignment display and color difference display.

[0016] Furthermore, the method further comprises:

[0017] Real-time monitoring is performed to determine whether the in-situ annotation has been modified. If so, the loop parameters and calculation parameters are synchronously updated according to the modified data.

[0018] Furthermore, a three-dimensional model of the bridge frame of the building is constructed, including:

[0019] Horizontal bridge frame metadata, axis grid metadata and floor information of each building floor are automatically extracted from the plan view, a bridge frame model of the corresponding building floor is constructed according to the horizontal bridge frame metadata, and the bridge frame models of each building floor are vertically spliced ​​according to the floor information and axis grid metadata to obtain a complete bridge frame three-dimensional model.

[0020] Furthermore, a second mapping relationship between a graphic element in the system diagram and a graphic element in the plane diagram of the corresponding loop is established through the coordinate position of the graphic element.

[0021] Furthermore, according to the starting distribution box element, the pipeline elements corresponding to each circuit are automatically extracted from the plan view, including:

[0022] The pipeline elements directly connected to the starting distribution box element are automatically extracted from the plan view, and the pipeline elements connected to each directly connected pipeline element in sequence are automatically extracted, and the pipeline elements are grouped according to the connection relationship of the pipeline elements. The single pipeline element in a group is the pipeline element of a loop.

[0023] Furthermore, the method further comprises:

[0024] After calculating and obtaining the piping and wiring engineering quantities of each circuit, the piping and wiring engineering quantities are mapped to the circuit parameters and calculation parameters. When the circuit parameters or calculation parameters of the circuit are modified, the corresponding piping and wiring engineering quantities are recalculated.

[0025] In a second aspect, the present invention provides a device for calculating the amount of piping and wiring engineering for an electrical system circuit, wherein the device is used to implement the steps of the method for calculating the amount of piping and wiring engineering for an electrical system circuit as described in the first aspect.

[0026] The beneficial effects of the present invention are as follows: the method and device for calculating the piping and wiring engineering quantity of the electrical system circuit provided by the present invention first extracts the parameters of the electrical system circuit through intelligent recognition technology, constructs a mapping relationship between the graphics elements of the system diagram and the plan view of each circuit, and determines the bridge graphics elements in the plan view according to the constructed three-dimensional model of the bridge, and then for all circuits between each starting distribution box and the end distribution box, automatically determines the pipeline graphics elements that need piping for each circuit and the bridge graphics elements that do not need piping and marks them accordingly, and finally automatically calculates the piping and wiring engineering quantity of each circuit according to the marking results and the corresponding calculation parameters. The present application realizes the automatic calculation of the piping and wiring engineering quantity, improves the calculation efficiency and accuracy, and through the constructed mapping relationship, it can realize the intelligent tracing of data and solve the problem of cumbersome data inspection and adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A flow chart of a method for calculating the piping and wiring engineering quantity of an electrical system circuit provided in an embodiment. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solution in this embodiment will be clearly and completely described below in conjunction with the drawings in this embodiment.

[0029] In some of the processes described in the specification of the present invention and the above-mentioned figures, multiple operations appearing in a specific order are included, but it should be clearly understood that these operations may not be executed in the order in which they appear in this document or may be executed in parallel. The sequence numbers of the operations are only used to distinguish different operations, and the sequence numbers themselves do not represent any execution order. In addition, these processes may include more or fewer operations, and these operations may be executed in sequence or in parallel.

[0030] At present, the calculation method of the piping and wiring engineering quantity of the electrical system circuit is usually manual calculation, that is, the cost personnel compare the system diagram and the plane diagram in the CAD drawing, manually determine the connection status and position relationship of the pipelines and bridges in the circuit, and complete the manual calculation of the piping and wiring engineering quantity of the electrical system circuit. The inventor has found through research that this manual calculation method is inefficient, prone to errors, and has poor accuracy.

[0031] Based on this, the technical solution of the present invention is proposed. In the present invention, loop parameters and calculation parameters corresponding to each loop are automatically extracted from the system diagram of the electrical system loop, the loop parameters include the starting distribution box number, the ending distribution box number and the loop number, and the calculation parameters include the loop model specification and the loop laying method; a mapping relationship is constructed, and the mapping relationship includes a first mapping relationship between the loop parameters of each loop and the graphic elements in the system diagram, and a second mapping relationship between the graphic elements in the system diagram and the graphic elements in the plan view of each loop; the bridge data of each building floor is automatically extracted from the plan view, a three-dimensional bridge model of the building is constructed according to the bridge data, and the bridge graphic element is determined in the plan view according to the three-dimensional bridge model; the corresponding starting distribution box graphic element is determined in the plan view according to the starting distribution box number and based on the mapping relationship, and the corresponding starting distribution box graphic element is determined according to the starting distribution box number. The starting distribution box element automatically extracts the pipeline elements corresponding to each circuit from the plan view, and marks the extracted pipeline elements as requiring piping; in the plan view, the starting point of the bridge of each circuit is determined according to the connection relationship between the pipeline elements and the bridge elements of each circuit, the corresponding terminal distribution box element is determined in the plan view according to the corresponding terminal distribution box number and based on the mapping relationship, and the terminal of the bridge of each circuit is determined according to the connection relationship between the terminal distribution box element and the bridge element; according to the bridge elements in the plan view and based on the optimal path algorithm, the optimal bridge path between the bridge starting point and the bridge terminal of each circuit is determined, and the bridge elements included in the optimal bridge path are determined, and the bridge elements included in the optimal bridge path are marked as not requiring piping; according to the marked pipeline elements and bridge elements of each circuit, the piping and wiring engineering quantity of each circuit is calculated in combination with the corresponding calculation parameters.

[0032] Specifically, the present invention first extracts the loop parameters and calculation parameters of the electrical system loop through intelligent recognition technology, constructs a mapping relationship between the system diagram and the graphic elements of the plan view of each loop, and determines the bridge graphic element in the plan view according to the constructed three-dimensional model of the bridge, and then automatically determines the pipeline graphic elements that need to be piped for each loop and the bridge graphic elements that do not need to be piped for all loops between each starting distribution box and the end distribution box, and performs corresponding markings, and finally automatically calculates the piping and wiring engineering quantity of each loop according to the marking results and the corresponding calculation parameters. The present invention realizes the automatic calculation of the piping and wiring engineering quantity, improves the calculation efficiency and accuracy, and through the constructed mapping relationship, it can realize the intelligent tracing of data and solve the problem of cumbersome data inspection and adjustment.

[0033] The technical solution in this embodiment will be clearly and completely described below in conjunction with the drawings in this embodiment. Obviously, the described embodiment is only a part of the embodiments of the present invention, rather than all the embodiments.

[0034] Figure 1 A flow chart showing a method for calculating the piping and wiring quantities of an electrical system circuit is shown in Figure 1 , the method comprises the following steps:

[0035] S1. Automatically extract loop parameters and calculation parameters corresponding to each loop from the system diagram of the electrical system loop;

[0036] In this embodiment, the loop parameters include the starting distribution box number, the ending distribution box number and the loop number, and the calculation parameters include the loop model specification and the loop laying method.

[0037] It can be understood that the system diagram of the electrical system circuit refers to the three-dimensional system diagram of the entire electrical system circuit in the CAD drawing. The system diagram is based on the distribution box. Each distribution box corresponds to multiple circuits, and each circuit has corresponding circuit parameters and calculation parameters. In practical applications, AI intelligent recognition technology can be used to automatically extract the circuit parameters and calculation parameters corresponding to each circuit from the system diagram.

[0038] In this embodiment, after automatically extracting the loop parameters corresponding to each loop from the system diagram, the corresponding graphic elements in the system diagram are marked in situ, and the in situ marking includes misalignment display and color difference display. And it is monitored in real time whether the in situ marking is modified. If so, the loop parameters and calculation parameters are synchronously updated according to the modified data.

[0039] Specifically, the extracted loop parameters will be directly marked in situ at the original position of the system diagram in the CAD drawing through "offset display" and "color difference"; and the in situ marking supports modification, and the modified data will be automatically synchronized to the loop parameters and calculation parameters, thereby facilitating users to check and adjust the parameters of the electrical system loop, and greatly solving the problem of cumbersome inspection and difficult adjustment for users.

[0040] S2. Constructing a mapping relationship, wherein the mapping relationship includes a first mapping relationship between the loop parameters of each loop and the graphic elements in the system diagram, and a second mapping relationship between the graphic elements in the system diagram and the graphic elements in the plan view of each loop.

[0041] After completing step S1, the loop parameters of each loop are mapped to the corresponding graphic elements in the system diagram. By constructing the corresponding relationship between the loop parameters and the graphic element coordinates, the construction of the first mapping relationship can be completed. Then, for each loop parameter, the graphic element coordinates in the system diagram and the graphic element coordinates in the plan view are recorded, and then the second mapping relationship between the graphic element in the system diagram and the graphic element in the plan view of each loop is constructed. Through the coordinate positioning method, the data tracing operation of the system diagram and the plan view can be realized.

[0042] S3. Automatically extract the bridge data of each building floor from the plan view, construct a three-dimensional bridge model of the building according to the bridge data, and determine the bridge graphic element in the plan view according to the three-dimensional bridge model.

[0043] It can be understood that the bridge is the carrier of wires and cables. When calculating the amount of electrical circuit piping and wiring engineering, it is not only the basis for the layout of electrical lines, but also the basis for the calculation of wire and cable piping. The part of the wiring that passes through the bridge is laid inside the bridge, and no piping is required for the wiring at this time; the part of the wiring that does not pass through the bridge requires piping to protect the cables and prevent damage from external factors.

[0044] When the electrical circuit is wired according to the bridge, some circuits need to cross different floors. When designers draw the drawings, they often put the bridge plans of different floors on one CAD drawing. Therefore, it is necessary to establish a complete three-dimensional model of the bridge that includes all floors as the basis for the layout of the electrical circuit.

[0045] In this embodiment, constructing a three-dimensional bridge model of a building includes: automatically extracting horizontal bridge metadata, axis grid metadata and floor information of each building floor from the plan view, constructing a bridge model of the corresponding building floor according to the horizontal bridge metadata, and vertically splicing the bridge models of each building floor according to the floor information and axis grid metadata to obtain a complete three-dimensional bridge model.

[0046] In actual applications, AI intelligent recognition technology is used to automatically extract the horizontal bridge, axis network, floor information, calculation parameters and other graphic metadata of each floor in the plan view to form the bridge model of each floor; then the vertical splicing of the three-dimensional bridge model of each floor is realized according to the "floor information" and "axis network automatic splicing technology", and finally a complete three-dimensional bridge model is obtained through professional inspection and manual adjustment. After the three-dimensional bridge model is constructed, it can be determined in the plan view which elements are bridge elements according to the three-dimensional bridge model.

[0047] S4. Determine the corresponding starting distribution box graphic element in the plan view according to the starting distribution box number and based on the mapping relationship, automatically extract the pipeline graphic elements corresponding to each circuit from the plan view according to the starting distribution box graphic element, and mark the extracted pipeline graphic elements as requiring piping.

[0048] Among them, according to the starting point distribution box element, the pipeline elements corresponding to each circuit are automatically extracted from the plan view, including:

[0049] The pipeline elements directly connected to the starting distribution box element are automatically extracted from the plan view, and the pipeline elements connected to each directly connected pipeline element in sequence are automatically extracted, and the pipeline elements are grouped according to the connection relationship of the pipeline elements. The single pipeline element in a group is the pipeline element of a loop.

[0050] It can be understood that this step is used to determine the wiring that needs to be piped in the plan view. After completing steps S1 to S3, the conditions for automatic calculation of the electrical circuit piping and wiring engineering quantity are met. Specifically, for each starting distribution box, first find the corresponding starting distribution box graphic element in the plan view according to the mapping relationship in step S2, and automatically extract the pipeline graphic elements directly connected to the starting distribution box graphic element through AI intelligent recognition technology, and based on these pipeline graphic elements, extract all the pipeline graphic elements connected to them and group them according to the connection relationship. A group of pipeline graphic elements is all the pipeline graphic elements of a circuit. Then, match the loop number of the circuit to which the distribution box belongs to determine the correspondence between the group and the loop number. Finally, the data mark that needs to be piped for the pipeline graphic elements in these groups indicates that this part of the pipeline needs to be piped, thereby determining which pipelines need to be piped.

[0051] S5. In the plan view, the starting point of the bridge of each circuit is determined according to the connection relationship between the pipeline graphic element and the bridge graphic element of each circuit, the corresponding terminal distribution box graphic element is determined in the plan view according to the corresponding terminal distribution box number and based on the mapping relationship, and the terminal point of the bridge of each circuit is determined according to the connection relationship between the terminal distribution box graphic element and the bridge graphic element.

[0052] It can be understood that this step is used to determine the starting point and end point of the bridge that does not require piping in the plan view. Normally, the wiring starts from the starting distribution box and does not pass through the bridge in the first half. The corresponding pipeline element can be extracted in the plan view, and the second half of the wiring passes through the bridge to connect to the terminal distribution box. Based on this, this embodiment can determine the corresponding bridge starting point through the connection position of the extracted pipeline element and the bridge element, and can determine the bridge end point of the corresponding loop through the connection position of the bridge element and the terminal distribution box.

[0053] S6. Determine the optimal bridge path between the bridge start point and the bridge end point of each loop according to the bridge elements in the plan view and based on the optimal path algorithm, determine the bridge elements included in the optimal bridge path, and mark the bridge elements included in the optimal bridge path as not requiring piping.

[0054] It can be understood that this step is used to determine the optimal bridge path between the bridge start point and the bridge end point in the plan view, so as to determine the bridge that does not need to be piped. Since there are many bridges between the bridge start point and the bridge end point, after determining the bridge start point and the bridge end point, this embodiment determines the optimal bridge path between the bridge start point and the bridge end point based on the optimal path algorithm, and all bridge graphics on the optimal bridge path are bridges that do not need to be piped.

[0055] S7. Calculate the piping and wiring engineering quantity of each circuit based on the marked pipeline elements and bridge elements of each circuit and the corresponding calculation parameters.

[0056] For each circuit, the above steps automatically determine the pipeline elements that require piping and the bridge elements that do not require piping in the plan view. According to the calculation parameters of each circuit, that is, the circuit model specifications and circuit laying method, and combined with the relevant engineering quantity calculation specifications, the piping and wiring engineering quantity of each circuit can be calculated.

[0057] In this embodiment, after calculating and obtaining the piping and wiring engineering quantity of each circuit, the piping and wiring engineering quantity is mapped with the circuit parameters and the calculation parameters. When the circuit parameters or calculation parameters of the circuit are modified, the corresponding piping and wiring engineering quantity is recalculated, which is convenient for users to modify data and synchronize operations later.

[0058] In summary, the method for calculating the piping and wiring engineering quantity of the electrical system circuit provided in this embodiment first extracts the parameters of the electrical system circuit through intelligent recognition technology, constructs a mapping relationship between the graphics elements of the system diagram and the plan view of each circuit, and determines the bridge graphics element in the plan view according to the constructed three-dimensional model of the bridge, and then for all circuits between each starting distribution box and the end distribution box, automatically determines the pipeline graphics element that needs piping for each circuit and the bridge graphics element that does not need piping and marks them accordingly, and finally automatically calculates the piping and wiring engineering quantity of each circuit according to the marking results and the corresponding calculation parameters. The present application realizes the automatic calculation of the piping and wiring engineering quantity, improves the calculation efficiency and accuracy, and through the constructed mapping relationship, it can realize the intelligent tracing of data and solve the problem of cumbersome data inspection and adjustment.

[0059] Based on the above technical solution, this embodiment further proposes a device for calculating the piping and wiring engineering quantity of an electrical system circuit, and the device is used to implement the steps of the method for calculating the piping and wiring engineering quantity of an electrical system circuit as described in this embodiment.

[0060] It can be understood that since the piping and wiring engineering quantity calculation device for the electrical system circuit described in this embodiment is a device for implementing the piping and wiring engineering quantity calculation method for the electrical system circuit described in the embodiment, for the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method, which will not be repeated here.

Claims

1. A method for calculating the piping and wiring engineering quantity of an electrical system circuit, characterized in that: The method comprises: Automatically extract the loop parameters and calculation parameters corresponding to each loop from the system diagram of the electrical system loop, wherein the loop parameters include the number of the starting distribution box, the number of the end distribution box and the loop number, and the calculation parameters include the model specification of the loop and the loop laying method; Constructing a mapping relationship, wherein the mapping relationship includes a first mapping relationship between a loop parameter of each loop and a graphic element in the system diagram, and a second mapping relationship between a graphic element in the system diagram and a graphic element in the plan view of each loop; Automatically extracting bridge data of each building floor from the plan view, constructing a three-dimensional bridge model of the building according to the bridge data, and determining bridge graphic elements in the plan view according to the three-dimensional bridge model; According to the number of the starting distribution box and based on the mapping relationship, the corresponding starting distribution box graphic element is determined in the plan view, and the pipeline graphic elements corresponding to each circuit are automatically extracted from the plan view according to the starting distribution box graphic element, and the extracted pipeline graphic elements are marked as requiring piping; In the plan view, the starting point of the bridge of each pipeline loop is determined according to the connection relationship between the pipeline element and the bridge element of each loop, the corresponding terminal distribution box element is determined in the plan view according to the corresponding terminal distribution box number and based on the mapping relationship, and the terminal of the bridge of each loop is determined according to the connection relationship between the terminal distribution box element and the bridge element; According to the bridge elements in the plan view and based on the optimal path algorithm, the optimal bridge path between the bridge start point and the bridge end point of each loop is determined, and the bridge elements included in the optimal bridge path are determined, and the bridge elements included in the optimal bridge path are marked as not requiring piping; According to the marked pipeline elements and bridge elements of each circuit, and combined with the corresponding calculation parameters, the piping and wiring engineering quantity of each circuit is calculated.

2. The method for calculating the piping and wiring engineering quantity of an electrical system circuit according to claim 1, characterized in that: The method further comprises: After automatically extracting the loop parameters corresponding to each loop from the system diagram, the corresponding graphic elements in the system diagram are marked in situ, and the in situ marking includes misalignment display and color difference display.

3. The method for calculating the piping and wiring engineering quantity of an electrical system circuit according to claim 2, characterized in that: The method further comprises: Real-time monitoring is performed to determine whether the in-situ annotation has been modified. If so, the loop parameters and calculation parameters are synchronously updated according to the modified data.

4. The method for calculating the piping and wiring engineering quantity of an electrical system circuit according to claim 1, characterized in that: Construct a 3D model of the building's bridge, including: Horizontal bridge frame metadata, axis grid metadata and floor information of each building floor are automatically extracted from the plan view, a bridge frame model of the corresponding building floor is constructed according to the horizontal bridge frame metadata, and the bridge frame models of each building floor are vertically spliced ​​according to the floor information and axis grid metadata to obtain a complete bridge frame three-dimensional model.

5. The method for calculating the piping and wiring engineering quantity of an electrical system circuit according to claim 1, characterized in that: The second mapping relationship between the graphic elements in the system diagram and the graphic elements in the plan view of the corresponding loop is established through the coordinate positions of the graphic elements.

6. The method for calculating the piping and wiring engineering quantity of an electrical system circuit according to claim 1, characterized in that: According to the starting point distribution box element, the pipeline elements corresponding to each circuit are automatically extracted from the plan view, including: The pipeline elements directly connected to the starting distribution box element are automatically extracted from the plan view, and the pipeline elements connected to each directly connected pipeline element in sequence are automatically extracted, and the pipeline elements are grouped according to the connection relationship of the pipeline elements. The single pipeline element in a group is the pipeline element of a loop.

7. The method for calculating the piping and wiring engineering quantity of an electrical system circuit according to claim 1, characterized in that: The method further comprises: After calculating and obtaining the piping and wiring engineering quantities of each circuit, the piping and wiring engineering quantities are mapped to the circuit parameters and calculation parameters. When the circuit parameters or calculation parameters of the circuit are modified, the corresponding piping and wiring engineering quantities are recalculated.

8. A device for calculating the quantity of piping and wiring engineering for an electrical system circuit, characterized in that: The device is used to implement the steps of the method for calculating the piping and wiring engineering quantity of an electrical system circuit as described in any one of claims 1 to 7.

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