CN115511389A - Method and system for selecting addresses of railway communication indoor equipment and storage medium thereof - Google Patents
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Abstract
The invention relates to a method and a system for selecting a site of railway communication indoor equipment and a storage medium thereof. The site selection of the railway communication indoor equipment is carried out only by empirical planning, the cost investment cannot be controlled, and the construction cost is increased. The method comprises the following steps: the method comprises the steps that a railway communication room is equivalent to a rectangle, and a rectangular coordinate system is established by taking the lower left corner of the rectangle as an origin; the method comprises the steps of equivalence of equipment as points, equivalence of cables between two pieces of equipment as a non-directional edge, and obtaining the weight of the non-directional edge; establishing a weighted connected graph model based on the point set, the edge set and the weight set; in the weighted connected graph model, the total cost of the cable is calculated and the position of the equipment is determined on the principle that two equipment with larger weight are adjacent as much as possible. The network optimization model provided by the method is suitable for site selection of indoor communication equipment of various scales and types, the total cost after site selection is greatly reduced, and the problems that the redundancy of cables is too large and resources are wasted are avoided.
Description
Technical Field
The invention relates to the technical field of railway communication indoor equipment arrangement, in particular to a method and a system for selecting a site of railway communication indoor equipment and a storage medium thereof.
Background
A plurality of railway communication indoor devices are arranged in the railway communication mechanical room and comprise cabinets and devices in the cabinets, and the cabinets are connected through cables. The cable arrangement between the cabinets depends on the logical connection relation between the cabinets and the equipment ports in the cabinets, and how to determine the positions of the cabinets directly determines the cable arrangement scheme, so that the equipment address selection becomes the basis and the key of the indoor arrangement of the railway communication machinery.
The problem of site selection of equipment in a railway communication mechanical room is that how to arrange the equipment and connect cables under the condition that the functions of the railway communication mechanical room and other external requirements are determined, namely the quantity, the types and the specifications of the equipment are given, and the total cost needs to be controlled to be minimum under the constraint conditions of meeting communication safety and the like. And only by experience planning, the cost input can not be controlled, so that the construction cost is increased, the cable consumption is greater than the actual demand, the construction amount is increased, and the later maintenance or modification workload is increased.
Disclosure of Invention
The invention aims to provide a method and a system for site selection of railway communication indoor equipment and a storage medium thereof, so as to solve the site selection problem of the railway communication indoor equipment and control construction cost.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the railway communication indoor equipment site selection method comprises the following steps:
the method comprises the steps that a railway communication room is equivalent to a rectangle, and a rectangular coordinate system is established by taking the lower left corner of the rectangle as an origin;
the equipment is equivalent to a point, a cable between two pieces of equipment is equivalent to a non-directional edge, and the weight of the non-directional edge is obtained;
establishing a weighted connected graph model based on the point set, the edge set and the weight set;
in the weighted connected graph model, the total cost of the cable is calculated and the position of the equipment is determined on the principle that two equipment with larger weight are adjacent as much as possible.
Further, the step of equating the devices to be points, equating the cable between the two devices to be a non-directional edge, and acquiring the weight of the non-directional edge includes:
in a rectangular coordinate system, the equipmentPoints equivalent to their geometric centre, i.e. points,,Is a set of devices that are to be used,;
device for storing and dispensing a productAnd apparatusThe cables between are equivalent to non-directional edges, i.e. edges,,;
wherein:
is composed ofThe unit price of the cable of the type is,,for a set of cable types, the set of cable types,;
Further, establishing a weighted connected graph model based on the point set, the edge set and the weight set, including:
Wherein:
further, in the weighted connectivity graph model, the total cost of the cable is calculated on the principle that two devices with higher weights are adjacent as much as possible, and the position of the device is determined, including:
determining the position of each device in the columns of devices such thatThe larger two devices are as adjacent as possible;
wherein:
the position of each column is determined so thatThe larger two columns are adjacent as much as possible;
Wherein:
In another aspect, a railway communication indoor equipment addressing system is provided, the system is used for completing the method, and comprises:
the coordinate system establishing module is used for equivalently establishing a rectangular coordinate system by taking the lower left corner of the rectangle as an origin;
the equivalent module is used for equivalent the equipment into points, equivalent the cable between the two equipment into a non-directional edge and acquiring the weight of the non-directional edge;
the model establishing module is used for establishing a weighted connected graph model based on the point set, the edge set and the weight set;
and the calculation and determination module is used for calculating the total cost of the cable and determining the position of the equipment in the weighted connected graph model on the principle that two pieces of equipment with higher weights are adjacent as much as possible.
In another aspect, a railway communication indoor unit addressing storage medium is provided, the storage medium comprising a stored program which, when executed by a processor, implements a method as described.
Compared with the prior art, the invention has the following beneficial effects:
the invention provides a network optimization model for solving the problem of site selection of railway communication indoor equipment, which is suitable for site selection of communication indoor equipment of various scales and types, and the total cost after site selection optimization is greatly reduced. The calculation result in the embodiment shows that the implementation according to the optimal scheme obtained by the invention can greatly save the cost and avoid the problems of too large redundancy of the cable and resource waste.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that drawings of other embodiments can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of the coordinate system and cabinet location of the present invention.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It should be noted that like reference numerals and letters refer to like items and, thus, once an item is defined in one embodiment, it need not be further defined and explained in subsequent embodiments. Also, the terms "comprises," "comprising," or the like, as well as any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In addition, the steps "S1", "S2", and the like in the embodiment of the present invention are only for convenience of description of the technical solution, so as to facilitate understanding of the specific steps and contents of the embodiment, and should not be construed as limiting the sequence of the steps, and any change only to the sequence of the steps should be within the protection scope of the present invention.
The existing method for selecting the location of the railway communication machinery indoor equipment generally needs designers to rely on design experience and depends on the design experience, and the method cannot achieve economy, reasonableness and uncontrollable budget and cost. The invention provides a method for site selection of railway communication indoor equipment, which is used for establishing a network site selection model and optimizing a site selection scheme based on a graph theory to achieve the purpose of controlling cost. The steps may be performed in a computer system such as a set of computer-executable instructions and, although the steps are depicted in a logical order, in some cases, may be performed in an order different than that depicted herein. The method comprises the following steps:
s1: the railway communication room is equivalent to a rectangle, and a rectangular coordinate system is established by taking the lower left corner of the rectangle as the origin.
S2: equating a device to be a point, equating a cable between two devices to be a non-directional edge, and acquiring the weight of the non-directional edge, specifically:
s201: in a rectangular coordinate system, the equipmentPoints equivalent to their geometric centre, i.e. points,,Is a set of devices that are to be used,;
s202: device for installingAnd apparatusThe cables between are equivalent to non-directional edges, i.e. edges,,(ii) a DeviceAnd apparatusAt least 1 is connected with a cable;
s203: edgeIs given the right ofIndicating deviceAnd apparatusThe price of one unit length of cable. The following agreed cable length units are meters, and the calculation process is as follows:
wherein:
is composed ofThe unit price (yuan/meter) of the profile cable,,for a set of cable types, the set of cable types,;
S3: establishing a weighted connected graph model based on the point set, the edge set and the weight set, specifically:
in combination with the reality, the method makes the following assumptions:
1. regardless of the shape and size of the railroad communication room and equipment.
2. Regardless of the internal structure and function of the device.
3. Cables connecting devices are classified by price, regardless of differences in appearance.
4. The cables and costs of connecting the device to outdoor equipment (e.g., a floor coil, a conference room, a rotating ring sensor, etc.) are not considered.
5. The indoor equipment is arranged according to column classification.
Wherein:
assuming that the rows of equipment are arranged in sequence from left to right, the optional position of each equipment in each row is determined, and the length difference of the rows is as small as possibleThen, thenA network addressing model for the problem, where device location is the decision variable. The problem to be solved is how to determine the location of the individual devices such that the "distance" weighted sum of the corresponding graphs is minimized (i.e. the total cable cost is minimized). The "distance" is recorded asAnd means the length of cable connecting two cabinets when they are positioned. Typically, a column of equipment has one rack, with 2-3 racks between each column, all located above the equipment.
S4: in the weighted connectivity graph model, the total cost of the cable is calculated on the principle that two devices with larger weights are adjacent as much as possible, and the positions of the devices are determined, specifically:
s402: determining the position of each device in the columns of devices such thatThe larger two devices are as adjacent as possible;
wherein:
s404: the position of each column is determined so thatThe larger two columns are adjacent as much as possible;
Wherein:
For the problem of large scale, the method can greatly reduce the complexity of the algorithm and obtain quite satisfactory solution.
The invention also provides a railway communication indoor equipment site selection system, which is used for completing the method and comprises the following steps:
the coordinate system establishing module is used for equivalently establishing a rectangular coordinate system by taking the lower left corner of the rectangle as an origin;
the equivalent module is used for equivalent the equipment into points, equivalent the cable between the two equipment into a non-directional edge and acquiring the weight of the non-directional edge;
the model establishing module is used for establishing a weighted connected graph model based on the point set, the edge set and the weight set;
and the calculation and determination module is used for calculating the total cost of the cable and determining the position of the equipment in the weighted connected graph model on the principle that two pieces of equipment with higher weights are adjacent as much as possible.
The invention also provides a storage medium for addressing railway communication indoor equipment, which comprises a stored program, and the program realizes the method when being executed by a processor.
Optionally, in this embodiment, the storage medium is configured to store program code for performing the following steps: the method comprises the steps of enabling a railway communication mechanical room to be equivalent to a cuboid, and obtaining geometric parameters of the railway communication mechanical room; the equipment is equivalent to a cuboid, and the number and geometric parameters of the equipment are obtained; establishing a rectangular coordinate system by taking the lower left corner of the bottom surface of the railway communication mechanical room as an origin; acquiring the position coordinates of the equipment in a rectangular coordinate system, and establishing a cable total cost minimum value calculation model as a railway communication machinery indoor equipment layout optimization model according to the unit price of the cable; and obtaining an optimal layout scheme according to the layout optimization model of the indoor equipment of the railway communication machinery.
Those skilled in the art will appreciate that all or part of the functions of the embodiments of the present invention can be implemented by hardware, or by a computer program. When all or part of the functions of the above embodiments are implemented by a computer program, the program may be stored in a computer-readable storage medium, and the storage medium may include: a read only memory, a random access memory, a magnetic disk, an optical disk, a hard disk, etc., and the program is executed by a computer to realize the above functions. For example, the program may be stored in a memory of the device, and when the program in the memory is executed by the processor, all or part of the functions described above may be implemented. In addition, when all or part of the functions in the above embodiments are implemented by a computer program, the program may be stored in a storage medium such as a server, another computer, a magnetic disk, an optical disk, a flash disk, or a portable hard disk, and may be downloaded or copied to a memory of a local device, or may be version-updated in a system of the local device, and when the program in the memory is executed by a processor, all or part of the functions in the above embodiments may be implemented.
Example (b):
examples describe: square and area of communication room of civil station on certain railway. 22 indoor distribution cabinets and distribution frames with names, sizes and distributionThe amounts are shown in Table 1. There are 16 types of cables used, among which 14 for indoor connection, unit price and number are shown in table 2. According to the design specification and the actual requirement, the connection relation and the quantity of the cables between the cabinet and the distribution frame are shown in a table 3, and the use quantity and the cost of the cables of the existing scheme are shown in a table 4.
TABLE 1 numbering, sizing and quantity of cabinets and distribution racks
Table 2 cable type, unit price and numbering
Table 3 cable connection table between machine cabinet and distribution frame
In the table: 1 (1) is a first column cabinet of the first column, and 1 (2) is a second column first cabinet. In the table, numerals in parentheses indicate cable numbers, and numerals on the right side indicate the number of cables.
Table 4 existing solutions use cables and cost
Since the optimization problem of the site selection and wiring of the indoor facilities is mainly considered in the embodiment, it is assumed that the indoor facilities (cabinets, distribution frames) are classified into 3 rows: the power distribution cabinets are positioned in the same row, the cabinets for data, videos and the like are arranged in a row, and the cabinets for facilities such as transmission, introduction and the like are arranged in a row. The number of cabinets and the optional location within each column are determined.
In this example, there are 22 cabinets, placed in three columns, 8 in the first column, 8 in the second column, and 6 in the third column by function. 1,2,3 rows of cabinet setsIs composed of,,,
In this example, the 1 st column has 8 cabinets, wherein the first cabinet is fixed (lower), and two 2 nd cabinets are adjacent; a 2 nd row of 8 cabinets, wherein a row head cabinet is fixed in position (is close to the lower part), and two 8 th cabinets are adjacent; and the 3 rd column comprises 6 cabinets, wherein two 14 # cabinets are adjacent, and two 16 # cabinets are adjacent.
The weights of the edges in the network model are obtained through calculation and are sorted from big to small, and the weight is shown in the following table:
first column
Second row
Third column
The cabinet positions in each column are determined by algorithm step 2 as follows (from bottom to top):
first column: 1,6,3,5,4,2,2,7,
the second column: 1,10,8,8,9, 13, 11, 12,
third column: 15, 17, 14, 14, 16, 16.
Weights between the columns were calculated, see table below:
first and second rows
First and third columns
Second and third columns
According to the sequence from large to small, the first row is adjacent to the second row, and according to the actual situation, 3 rows of cabinets are finally obtained and are sequentially arranged from left to right according to the sequence of 3,2 and 1. The position within each column is not changed any more, thus resulting in the final solution.
According to the center coordinates (see table 5) of each cabinet corresponding to the scheme, the number of used cables (the redundancy coefficient is 0.2, and the distance is calculated according to the rounding) and the total cost are easily calculated, the total cost is 56469 yuan, 29726 yuan is reduced compared with the existing scheme, 34.5% is reduced, and the optimization effect is very obvious.
TABLE 5 Final plan of each cabinet center coordinates
The present invention has been described in terms of specific examples, which are provided to aid understanding of the invention and are not intended to be limiting. Numerous simple deductions, modifications or substitutions may also be made by those skilled in the art in light of the present teachings.
Claims (6)
1. The railway communication indoor equipment site selection method is characterized by comprising the following steps:
the method comprises the following steps:
the method comprises the steps that a railway communication room is equivalent to a rectangle, and a rectangular coordinate system is established by taking the lower left corner of the rectangle as an origin;
the method comprises the steps of equivalence of equipment as points, equivalence of cables between two pieces of equipment as a non-directional edge, and obtaining the weight of the non-directional edge;
establishing a weighted connected graph model based on the point set, the edge set and the weight set;
in the weighted connectivity graph model, the total cost of the cable is calculated and the position of the equipment is determined on the principle that two equipment with higher weight are adjacent as much as possible.
2. The method of claim 1, wherein:
the method for making the device equivalent to the point, making the cable between two devices equivalent to the undirected edge, and obtaining the weight of the undirected edge includes:
in a rectangular coordinate system, the equipmentPoints equivalent to their geometric centre, i.e. points,,Is a set of devices that are to be considered,;
device for installingAnd apparatusThe cables in between are equivalent to non-directional sides, i.e. sides,,;
wherein:
3. The method of claim 2, wherein:
establishing a weighted connected graph model based on the point set, the edge set and the weight set, wherein the weighted connected graph model comprises the following steps:
Wherein:
4. the method of claim 3, wherein:
in the weighted connected graph model, the total cost of the cable is calculated on the principle that two devices with larger weights are adjacent as much as possible, and the positions of the devices are determined, wherein the method comprises the following steps:
determining the position of each device in the columns of devices such thatThe larger two devices are as adjacent as possible;
wherein:
the position of each column is determined so thatThe larger two columns are adjacent as much as possible;
Wherein:
5. Railway communication indoor equipment site selection system, its characterized in that:
the system is for performing the method of any of claims 1-4, comprising:
the coordinate system establishing module is used for equivalently establishing a rectangular coordinate system by taking the lower left corner of the rectangle as an origin;
the equivalent module is used for equivalent the equipment into points, equivalent the cable between the two equipment into a non-directional edge and acquiring the weight of the non-directional edge;
the model establishing module is used for establishing a weighted connected graph model based on the point set, the edge set and the weight set;
and the calculation and determination module is used for calculating the total cost of the cable and determining the position of the equipment in the weighted connected graph model on the principle that two pieces of equipment with higher weights are adjacent as much as possible.
6. The railway communication indoor equipment site selection storage medium is characterized in that:
the storage medium comprises a stored program which, when executed by a processor, implements the method of any one of claims 1-4.
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