Ship regional wiring method

Abstract

The invention discloses a ship wiring method which can reduce ship cable wiring complexity and reduce ship cable wiring cost. The ship regional wiring method comprises the steps that ship wiring regions are divided according to the distribution degree of the position of terminal equipment in a ship; for each ship wiring area, a junction box is arranged in the ship wiring area, and terminal equipment in the ship wiring area is connected with the junction box through a branch cable; the junction box in each ship wiring area is connected with ship main control equipment through a first main cable, and the junction boxes in the adjacent ship wiring areas are connected through a second main cable.

Description

Technical Field

[0001] The present invention relates to the technical field of shipbuilding, and in particular to a ship area wiring method. Background Art

[0002] In recent years, the shipbuilding volume has increased dramatically, ship prices have fallen, and labor costs have continued to rise. In particular, the labor cost of laying cables is very high, and the cable routing design is also more complicated. Under the traditional wiring mode, not only the main equipment such as pump groups need to be connected to the main control equipment in the engine room through independent cables, but some auxiliary equipment, such as space heaters, pressure switches, self-priming devices, high and low level switches, etc. also need to be directly connected to the main control equipment in the engine room through independent cables. As a result, the cost of cable procurement and installation remains high, leading to increased labor costs and increased material costs. Summary of the Invention

[0003] The object of the present invention is to overcome the defects in the prior art and provide a ship wiring method that can reduce the complexity of ship cable wiring and reduce the cost of ship cable wiring.

[0004] To achieve the above-mentioned object, the present invention proposes a ship area wiring method, the ship area wiring method comprising: Divide the ship wiring area according to the concentration of terminal equipment in the ship; For each ship wiring area, a junction box is provided in the ship wiring area, and a terminal device in the ship wiring area is connected to the junction box with a branch cable; The junction boxes in each ship wiring area are connected to the ship main control equipment with a first trunk cable, and the junction boxes in adjacent ship wiring areas are connected with a second trunk cable.

[0005] Furthermore, the junction box includes a main control interface, a terminal interface and a spare interface; The main control interface is used to access the first trunk cable; The terminal interface is used to access the branch circuit; The backup interface is used to access the second trunk cable.

[0006] Furthermore, the method further comprises: A disconnection detection device and a switching device are provided in the junction box, the disconnection detection device is connected to the switching device, and the switching device is connected to the spare interface; The disconnection detection device is used to detect whether the first trunk cable is disconnected, and send a first control signal to the switching device when the first trunk cable is detected to be disconnected; In the default state, the adapter connects the connection path between the terminal interface and the main control interface. After receiving the first control signal, the adapter connects the connection path between the terminal interface and the target backup interface, and sends a second control signal to the adjacent target junction box through the second trunk cable connected to the target backup interface, so that the adapter in the target junction box connects the connection path between the corresponding backup interface and the main control interface.

[0007] Furthermore, the method further comprises: When a junction box has multiple backup interfaces, the priorities of the backup interfaces are pre-set in the adapter of the junction box, so that after receiving the first control signal, the adapter of the junction box selects the backup interfaces as target backup interfaces in descending order of priority until the adapter in the adjacent target junction box returns a feedback signal indicating that the connection path between the corresponding backup interface and the main control interface is successfully established; The priority of the backup interface is set according to the load of the adjacent junction box connected to the backup interface. The lower the load of the adjacent junction box, the higher the priority of the corresponding backup interface.

[0008] Furthermore, the division of ship wiring areas according to the concentration and dispersion of the locations of the terminal devices in the ship includes: Obtaining a three-dimensional structural diagram of the ship, wherein the coordinates of the terminal device are marked on the three-dimensional structural diagram; Calculating the relative distance between the coordinates of each terminal device and the coordinates of other terminal devices in the three-dimensional structure diagram; Based on the first constraint condition, clustering the coordinates of adjacent terminal devices whose relative distance is less than a preset threshold in the three-dimensional structure diagram, and determining the regional boundaries of the preliminary divided wiring area according to the coordinates of the terminal devices in the same cluster; The region boundary is adjusted according to the second constraint condition to obtain the final divided ship wiring region.

[0009] Furthermore, the first constraint condition includes: Avoid grouping the coordinates of terminal devices in different compartments and / or levels of the ship into the same cluster; Avoid grouping the coordinates of terminal devices with dangerous areas between them into the same cluster.

[0010] Furthermore, the second constraint condition includes: The area boundary is aligned with the ship's preset trunk cable channel; The load of terminal devices in a single wiring area does not exceed the preset threshold.

[0011] The advantages and beneficial effects of the present invention are as follows: the ship wiring area is divided according to the degree of distribution between the terminal equipment locations, a junction box is set in each ship wiring area to carry out regional wiring of the terminal equipment, and a trunk cable is used to connect the junction boxes in adjacent ship wiring areas as a redundant design, which can not only reduce unlimited complexity and wiring costs, but also reduce the risks caused by trunk cable failures, improve the reliability of the cable system, and facilitate uninterrupted power maintenance of the cable system. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic flow chart of the ship area wiring method of the present invention; Figure 2 This is a schematic diagram of an application scenario of the ship area wiring method of the present invention; Figure 3 It is a schematic diagram of the process of dividing ship wiring areas according to the present invention.

[0013] In the figure, 200 is the main control device; 210, 220, and 230 are junction boxes; 211, 212, 221, 222, 231, and 232 are navigation lights; 213, 223, and 233 are main control interfaces; 214, 215, 224, 225, 234, and 235 are terminal interfaces; 216, 226, 227, and 236 are backup interfaces. DETAILED DESCRIPTION

[0014] The following embodiments are further described in conjunction with the accompanying drawings and examples. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention.

[0015] according to Figure 1 As shown, the ship area wiring method of the present invention includes the following steps: S101. Divide the ship wiring area according to the concentration and distribution of the locations of the terminal devices in the ship.

[0016] S102: For each ship wiring area, a junction box is provided in the ship wiring area, and a terminal device in the ship wiring area is connected to the junction box using a branch cable.

[0017] S103: Connect the junction box in each ship wiring area to the ship main control device using a first trunk cable, and connect the junction boxes in adjacent ship wiring areas using a second trunk cable.

[0018] The density of terminal equipment on a ship can be understood as the degree to which equipment is clustered in a local area. For example, in a cabin, two ballast pumps for a ballast water treatment system and two fire bilge pumps may be installed. This cabin has a high degree of localized equipment clustering and can be divided into a wiring area. For example, in a ship's navigation light system, navigation lights are distributed at the bow, amidships, and stern, with a relatively high concentration near the bow, radar mast, and stern light pole. Therefore, a regional junction box can be located near each of these poles.

[0019] Trunk cables typically use multi-core cables, which serve both power distribution and communications. Branch cables are typically selected based on the type of terminal equipment and the environment in which they operate. For example, high-power equipment like motors, pumps, and valves uses corrosion-resistant tinned copper core cables with insulation and sheathing. This cable is flame-retardant, heat-resistant, oil-resistant, and mechanically shock-resistant. Sensors, instruments, and other signal-transmitting devices use multi-core cables with shielding and fire-resistant sheathing.

[0020] It is understood that, compared to independently wiring each terminal device to the master control device, centralized wiring through the junction boxes installed within the zone, consolidating the cables connecting the terminal devices in that zone to the master control device into a single trunk cable, can significantly reduce the length of cables required for wiring and reduce wiring complexity. If the first trunk cable between the junction box and the master control device in a certain wiring zone fails and becomes disconnected, the junction box can be connected via a second trunk cable connected to the junction box in an adjacent wiring zone, as well as the first trunk cable between the junction box in that adjacent wiring zone and the master control device.

[0021] The present invention divides the ship wiring area according to the degree of distribution between the terminal equipment locations, and sets a junction box in each ship wiring area to carry out regional wiring of the terminal equipment. At the same time, a trunk cable is used to connect the junction boxes in adjacent ship wiring areas as a redundant design. This can not only reduce unlimited complexity and wiring costs, but also reduce the risk caused by trunk cable failures, improve the reliability of the cable system, and facilitate uninterrupted power maintenance of the cable system.

[0022] In order to enable the junction box to implement the ship area wiring method of the present invention, a preferred embodiment of the present invention is that the junction box includes a main control interface, a terminal interface and a backup interface; the main control interface is used to access the first trunk cable; the terminal interface is used to access the branch circuit; and the backup interface is used to access the second trunk cable.

[0023] In order to reduce the line loss of the trunk cable, the ship area wiring method of the present invention also includes: arranging a disconnection detection device and a switching device in the junction box, connecting the disconnection detection device to the switching device, and connecting the switching device to the backup interface; the disconnection detection device is used to detect whether the first trunk cable is disconnected, and sends a first control signal to the switching device when the first trunk cable is detected to be disconnected; the switching device connects the connection path between the terminal interface and the main control interface in the default state, and the switching device connects the connection path between the terminal interface and the target backup interface after receiving the first control signal, and sends a second control signal to the adjacent target junction box through the second trunk cable connected to the target backup interface, so that the switching device in the target junction box connects the connection path between the corresponding backup interface and the main control interface.

[0024] In order to achieve load balancing of junction boxes in the redundant design of ship area wiring, the ship area wiring method of the present invention also includes: when there are multiple backup interfaces of the junction box, the priority of the backup interface is set in advance in the adapter device of the junction box, so that after receiving the first control signal, the adapter device of the junction box selects the backup interface as the target backup interface in order from high to low priority of the backup interface until the adapter device in the adjacent target junction box returns a feedback signal indicating that the connection path between the corresponding backup interface and the main control interface is successfully connected; the priority of the backup interface is set according to the load of the adjacent junction box connected to the backup interface, and the lower the load of the adjacent junction box, the higher the priority of the corresponding backup interface.

[0025] For example, combined Figure 2 In the illustrated application scenario, disconnection detection devices and switching devices are provided in junction boxes 210, 220, and 230. By default, the switching device in junction box 210 connects the connection path between the main control interface 213 and the terminal interfaces 215 and 216. Central control device 200 can send control signals to junction box 210 via the trunk cable. The connection path between the main control interface 213 and the terminal interfaces 215 and 216 transmits the control signals to the branch cables and then to the navigation lights 211 and 212. The default state of junction boxes 220 and 230 is similar and will not be further described here.

[0026] When the disconnection detection device in the junction box 210 fails to receive a response pulse from the main control device 200 for three consecutive times, the disconnection detection device determines that the trunk cable connecting the junction box 220 and the main control device 200 is disconnected, and the disconnection detection device sends a first control signal to the switching device in the junction box 220. The switching device selects the target backup interface for switching according to the priority of the backup interfaces 226 and 227. Assuming that the priority of the backup interface 227 is higher, the switching device first connects the connection path between the backup interface 227 and the terminal interfaces 224 and 225. At the same time, the switching device sends a second control signal to the junction box 230 through the trunk cable between the backup interface 227 and the backup interface 236. The switching device in the junction box 230 connects the connection path between the backup interface 236 and the main control interface 233 according to the second control signal, and the navigation lights 221 and 222 can be connected to the main control device 200 through the path between the backup interface 227, the backup interface 236 and the main interface 233.

[0027] If the adapter device in the junction box 230 does not connect the connection path between the backup interface 236 and the main control interface 233 after receiving the second control signal, the adapter device of the junction box 220 will select the backup interface 226 as the target backup interface according to the priority, and then connect the connection path between the backup interface 226 and the terminal interfaces 224 and 225. At the same time, the adapter device sends the second control signal to the junction box 210 through the trunk cable between the backup interface 226 and the backup interface 216. The adapter device in the junction box 210 will connect the connection path between the backup interface 216 and the main control interface 213 according to the second control signal, so that the navigation lights 221 and 222 can be connected to the main control device 200 through the path between the backup interface 226, the backup interface 216 and the main control interface 213.

[0028] Similarly, when the main cable between the junction box 210 and the main control device 200 is broken, the adapter in the junction box 210 connects the connection path between the backup interface 216 and the terminal interfaces 214 and 215, and sends a second control signal to the junction box 220 to connect the connection path between the backup interface 226 and the main control interface 223. The navigation lights 211 and 212 can be connected to the main control device 200 through the connection path between the backup interface 216, the backup interface 226, and the main control interface 223.

[0029] In order to make the division of ship wiring areas more efficient and reasonable, a preferred embodiment of the present invention is to divide the ship wiring areas according to the concentration and distribution of the locations of the terminal devices in the ship, including: S1011. Obtain a three-dimensional structural diagram of the ship, where the coordinates of the terminal device are marked.

[0030] S1012: Calculate the relative distance between the coordinates of each terminal device and the coordinates of other terminal devices in the three-dimensional structure diagram.

[0031] S1013 . Based on the first constraint condition, cluster the adjacent terminal device coordinates whose relative distance is less than a preset threshold in the three-dimensional structure diagram, and determine the region boundary of the initially divided wiring area according to the terminal device coordinates in the same cluster.

[0032] S1014. Adjust the region boundary according to the second constraint condition to obtain a finally divided ship wiring region.

[0033] By calculating the relative distance between each terminal device's coordinates and those of other terminal devices, the three-dimensional coordinates of the terminal devices in the three-dimensional structure diagram are mapped into continuous density zones. The device density at each location is determined, and the degree of local clustering at each device location is quantified using kernel density estimation. High-density areas represent dense device distribution, while low-density areas indicate sparse distribution. When the relative distance between adjacent terminal device coordinates is less than a preset threshold (e.g., less than 1.5 times the average inter-device spacing), the two terminal devices are located in the same device density zone and the area between them is continuous. In this case, the clustering algorithm assigns the two terminal devices to the same cluster. Among the multiple terminal device coordinates assigned to the same cluster, the coordinates at the edge of the cluster are identified. Each cluster is considered a preliminary wiring area. Based on these coordinates at the edge of the cluster, the boundaries of the preliminary wiring area are determined. The boundaries of any unreasonable wiring areas are corrected using the first constraint. For example, if a compartment is separated by a permanent structure such as a fire partition, the preliminary partition spanning these two compartments will be forcibly split into independent areas. In order to avoid dangerous areas such as high temperature, high humidity, and strong vibration, the boundaries of the preliminary partitions will be forcibly adjusted to keep them away from dangerous areas.

[0034] After the boundaries of the preliminary zones are determined, they are adjusted based on the secondary constraints to create the final ship wiring zones. For example, to preserve the cable trunk channels pre-set during ship design, the boundaries of the preliminary zones are aligned with the existing channels. To ensure load balancing between zones, the peak power consumption of a single zone is limited to 85% of the power distribution unit capacity, and the peak communication volume of a single zone is limited to 50% of the total communication traffic.

[0035] In order to make the divided ship wiring areas more reasonable, avoid dangerous environments and improve safety, the preferred implementation scheme of the present invention is that the first constraint condition includes: avoiding classifying the coordinates of terminal devices in different cabins and / or different levels of the ship into the same cluster; avoiding classifying the coordinates of terminal devices in dangerous areas between the two parties into the same cluster.

[0036] In order to allow the wiring of the junction box to reuse the existing trunk cable channel and balance the wiring load of the junction box, a preferred embodiment of the present invention is that the second constraint condition includes: the area boundary is aligned with the preset trunk cable channel of the ship; and the load of the terminal equipment in a single wiring area does not exceed a preset threshold.

[0037] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A ship area wiring method, characterized in that: include: Divide the ship wiring area according to the concentration of terminal equipment in the ship; For each ship wiring area, a junction box is provided in the ship wiring area, and a terminal device in the ship wiring area is connected to the junction box with a branch cable; The junction box in each ship wiring area is connected to the ship main control equipment with a first trunk cable, and the junction boxes in adjacent ship wiring areas are connected with a second trunk cable.

2. The ship area wiring method according to claim 1, characterized in that: The junction box includes a main control interface, a terminal interface and a spare interface; The main control interface is used to access the first trunk cable; The terminal interface is used to access the branch circuit; The backup interface is used to access the second trunk cable.

3. The ship area wiring method according to claim 2, characterized in that: The method further comprises: A disconnection detection device and a switching device are provided in the junction box, the disconnection detection device is connected to the switching device, and the switching device is connected to the spare interface; The disconnection detection device is used to detect whether the first trunk cable is disconnected, and send a first control signal to the switching device when the first trunk cable is detected to be disconnected; In the default state, the adapter connects the connection path between the terminal interface and the main control interface. After receiving the first control signal, the adapter connects the connection path between the terminal interface and the target backup interface, and sends a second control signal to the adjacent target junction box through the second trunk cable connected to the target backup interface, so that the adapter in the target junction box connects the connection path between the corresponding backup interface and the main control interface.

4. The ship area wiring method according to claim 3, characterized in that: The method further comprises: When a junction box has multiple backup interfaces, the priorities of the backup interfaces are pre-set in the adapter of the junction box, so that after receiving the first control signal, the adapter of the junction box selects the backup interfaces as target backup interfaces in descending order of priority until the adapter in the adjacent target junction box returns a feedback signal indicating that the connection path between the corresponding backup interface and the main control interface is successfully established; The priority of the backup interface is set according to the load of the adjacent junction box connected to the backup interface. The lower the load of the adjacent junction box, the higher the priority of the corresponding backup interface.

5. The ship area wiring method according to claim 1, characterized in that: The division of ship wiring areas according to the concentration and dispersion of the locations of the terminal devices in the ship includes: Obtaining a three-dimensional structural diagram of the ship, wherein the coordinates of the terminal device are marked on the three-dimensional structural diagram; Calculating the relative distance between the coordinates of each terminal device and the coordinates of other terminal devices in the three-dimensional structure diagram; Based on the first constraint condition, clustering the coordinates of adjacent terminal devices whose relative distance is less than a preset threshold in the three-dimensional structure diagram, and determining the regional boundaries of the preliminary divided wiring area according to the coordinates of the terminal devices in the same cluster; The region boundary is adjusted according to the second constraint condition to obtain the final divided ship wiring region.

6. The ship area wiring method according to claim 5, characterized in that: The first constraint condition includes: Avoid grouping the coordinates of terminal devices in different compartments and / or levels of the ship into the same cluster; Avoid grouping the coordinates of terminal devices with dangerous areas between them into the same cluster.

7. The ship area wiring method according to claim 5, characterized in that: The second constraint condition includes: The area boundary is aligned with the ship's preset trunk cable channel; The load of terminal devices in a single wiring area does not exceed the preset threshold.

Images