CN114865345A

CN114865345A - Filtering junction box, dimming illumination line and ship

Info

Publication number: CN114865345A
Application number: CN202210589788.9A
Authority: CN
Inventors: 陶志超; 杨瑜
Original assignee: China Shipbuilding Technology Development Co ltd
Current assignee: China Shipbuilding Technology Development Co ltd
Priority date: 2022-05-26
Filing date: 2022-05-26
Publication date: 2022-08-05

Abstract

The embodiment of the invention discloses a filtering junction box, a dimming lighting circuit and a ship, wherein the filtering junction box comprises: a main line input socket for electrical connection with an input end of a main line cable, the main line cable being processed in parallel in the filter junction box; a main line output socket for outputting the power supply and signals of the main line cable after parallel processing to another filtering junction box through another main line cable; the signal filter is used for filtering dimming signals in the trunk line cable and is electrically connected with the shunt output sockets which are arranged in parallel, the shunt output sockets are electrically connected with the lighting lamp through corresponding lighting local branches, and the signal filter module adopts a common-mode conjugate current coil and a common-mode filter capacitor to eliminate electromagnetic interference generated by the trunk line cable and effectively suppress power line interference.

Description

Filtering junction box, dimming illumination line and ship

Technical Field

The invention relates to the technical field of signal transmission, in particular to a filtering junction box, a dimming illumination line and a ship.

Background

At present, in some large passenger ship projects, dimming lighting equipment is usually adopted in public entertainment areas in order to optimize the atmosphere of the illumination environment, while in some early projects, the power supply tangential (traic) dimming lighting equipment is adopted to keep original lighting power supply lines and cables unchanged, so that cost control is very advantageous.

In order to meet the requirement of dimming function and avoid the influence of a dimming line on a power grid and communication, at present, 0-10V dimming lighting equipment is mainly adopted on some large passenger ships, however, although 0-10V dimming signals do not influence the power grid or communication in the transmission process, under the condition that the existing wiring design is not changed (the power supply of lighting AC230V and the 0-10V dimming signals share a cable), the 0-10V voltage signals are very easily interfered by a power (more than AC 230V) power supply line (hereinafter referred to as a power line for short), and specific reference can be made to fig. 1.

In fig. 1, in the same cable tray, a strong power supply line of some large electronic devices generates a distortion current during a starting or working process, and the distortion current generates a plurality of higher harmonics which generate large electromagnetic interference to a voltage-type dimming signal (e.g. 0-10V); in the starting or disturbing process of the strong power supply circuit of the motor load, sudden change impact current can be generated, and the current can generate larger electromagnetic interference on voltage type dimming signals (such as 0-10V). The reason for this is that the electromagnetic induction generated by these distortion currents or abrupt change currents Δ i forms a significant amount of flux change after being continuously superimposed along the way in the long-distance trunk line

These flux variations cause signal transmission lines within their electromagnetic interference range to develop significant common mode induced electromotive force during this time (Δ t)

(induced current is generated in a loop at the same time), after the induced electromotive force is superposed on a 0-10V voltage type dimming control signal along the way, the induced electromotive force can cause the instantaneous change of a voltage signal, even the voltage signal is higher than an upper limit 10V or lower than a lower limit 0V, and the dimming illumination can be causedThe line can be out of order for a short time, and the lighting area can be bright, dark or twinkling, which can greatly affect the experience of passengers.

In addition to the above mentioned distortion/abrupt current influence of the power loop, according to the existing lighting wiring design, when the transmission distance (stacking distance) of the lighting main line is long, the AC230V power supply core wire inside the dimming lighting line cable will also generate a certain electromagnetic interference and induced potential interference to the 0-10V control core wire in the same cable, and when the dimming lighting device is not configured with a dedicated filtering function, the situation of continuous and unstable light flicker will be caused.

In summary, the original traditional lighting line laying process and the layout of the lines are no longer applicable, and the whole ship lighting line laying needs to be redesigned, which brings great difficulties to the reconstruction of the old ship dimming system and the design of the new ship dimming line. According to the prior art and the ship building process, in order to avoid the influence of a 0-10V voltage type dimming signal on other power lines in the transmission process, an independent shielding cable needs to be selected by a shipyard as a transmission cable of the 0-10V dimming signal, and the signal cable and the power line cable are laid separately and independently, so that the labor cost of the shipyard cable lofting design work, the site wiring and wiring work and the purchase cost of cable materials are increased by times.

Disclosure of Invention

In view of the above problems in the prior art, embodiments of the present invention provide a filtering junction box, a dimming illumination circuit and a ship suitable for 0-10V dimming illumination, which can keep the transmission cable path and the circuit layout of a 0-10V dimming signal consistent with those of a conventional non-dimming illumination circuit (i.e., the 0-10V signal and an AC230V power source are transmitted by the same 5-core cable), and the signals are not interfered, so that the problem of economic applicability of the 0-10V dimming illumination on a large passenger ship can be well solved.

The embodiment of the invention provides a filtering junction box which is applied to a dimming lighting circuit, and the filtering junction box comprises:

a trunk line input socket for electrical connection with a trunk line cable input, the trunk line cable being processed in parallel within the filter junction box;

a main line output socket for outputting the power and signals of the main line cable after parallel processing to another filtering junction box through another main line cable;

and the signal filter is used for filtering the dimming signal in the trunk line cable and is electrically connected with a plurality of shunt output sockets which are arranged in parallel, the shunt output sockets are electrically connected with the lighting lamp through corresponding lighting local branches respectively, and the signal filter module adopts a common-mode conjugate current coil and a common-mode filter capacitor to eliminate electromagnetic interference generated by the trunk line cable.

In some embodiments of the present invention, the signal filter includes a common-mode choke coil and a common-mode filter capacitor, wherein a common-mode induced current in the electromagnetic interference is suppressed after flowing through the common-mode choke coil through a positive terminal and a negative terminal, and a common-mode induced voltage in the electromagnetic interference caused by the positive terminal and the negative terminal is released after being grounded through the common-mode filter capacitor;

the signal filter further comprises a voltage drop detection module and a voltage compensation module, wherein the voltage drop detection module is used for detecting an influence value of the common-mode conjugate current coil which is connected in series in a signal loop to the actual voltage emitted by the signal source, and the voltage compensation module is used for correcting the actual voltage emitted by the signal source based on the influence value.

In some embodiments of the present invention, the trunk line cable comprises 5 cores, wherein 2 cores are used for power supply, 2 cores are used for transmitting dimming signals of 0V-10V, and 1 core is used for grounding.

In some embodiments of the present invention, the main line input socket, the main line output socket and the shunt output socket all adopt a connection manner of a pluggable quick connector, and the signal filtering module adopts a design of a pluggable pin.

In some embodiments of the present invention, the main line input socket adopts a male plug of a pin-type pluggable quick connector, and the plug of the input end of the main line cable adopts a female plug of a hole-type pluggable quick connector to match with the main line input socket;

the main line output socket and the shunt output socket both adopt female heads of plughole type pluggable quick connectors, and a plug at the output end of the other main line cable connected with the main line output socket and the shunt output socket or a plug of a branch cable in the lighting local branch adopts a male head of a plugpin type pluggable quick connector.

In some embodiments of the present invention, the main line input socket adopts a six-pin structure, the main line output socket adopts a six-jack structure, and the shunt output socket adopts a five-jack structure.

In some embodiments of the present invention, the filter junction box further comprises:

the maintenance protective cover covers the mounting groove for inserting the signal filtering module;

a fixing part to fix the filter junction box to a mounting location.

The embodiment of the invention also provides a dimming illumination circuit, which comprises:

a plurality of filter junction boxes provided as in the above embodiments;

the dimming control cabinet is electrically connected with the plurality of filtering junction boxes which sequentially adopt a bus chain type topological structure in the trunk line of the dimming lighting line through a trunk line cable;

the lighting lamps are electrically connected with corresponding filtering junction boxes through branch cables respectively, and each filtering junction box is in star-shaped distributed electrical connection with the lighting lamps through the branch cables;

each filtering junction box is used for blocking electronic interference generated in the process of conducting and superposing long-distance transmission of a trunk line.

In some embodiments of the invention, the dimmed lighting circuit is applied to a marine vessel, wherein,

the trunk line cable can be laid in the same bundle as the power cable of the vessel.

The embodiment of the invention also provides a ship, and the ship adopts the dimming lighting circuit provided by the embodiment.

Compared with the prior art, the filtering junction box, the dimming lighting circuit and the ship provided by the embodiment of the invention have the beneficial effects that: the filter junction box has simple structure design, low device selection cost and convenient mass production and manufacture; meanwhile, the installation, disassembly and maintenance are easy, and the early installation cost and the later maintenance cost are greatly reduced; furthermore, the electric interface of the filter junction box has perfect safety design and error-proof design, and has strong applicability; in addition, the topological connection form of the filtering junction box in the dimming illumination circuit is the combination of bus chain type and star radiation, so that the trend of the illumination circuit is simpler and clearer, the field construction is more flexible and efficient, and the filtering junction box is also suitable for the accurate transmission and parallel distribution of other 0-10V instruments/control signals of a ship based on the voltage drop compensation function of the filtering circuit. The interference of the filtering junction box on a power line is effectively inhibited, 0-10V dimming illumination is used as the most widely used dimming mode of a mail steamer at present, and the method can be completely suitable for the laying mode of the traditional non-dimming illumination line, namely, a signal line of the 0-10V dimming illumination line and a power line share a 5G1.5 cable (the signal and the power cable do not need to be separated independently), and the dimming illumination line can be laid in the same beam with other power cables according to the traditional convention.

Drawings

FIG. 1 is a schematic diagram of a prior art marine main line power supply;

FIG. 2 is a schematic external view of a filter junction box according to an embodiment of the invention;

FIG. 3 is a schematic diagram of a topology structure of a filtering junction box in a dimming lighting circuit according to an embodiment of the present invention;

fig. 4 is a schematic diagram of the interior of a filtering terminal box in a dimming lighting circuit according to an embodiment of the present invention.

Reference numerals

1. A main line input socket; 2. a trunk line cable; 3. a main line output socket; 4. a lighting fixture; 5. a signal filter; 6. a shunt output receptacle; 7. maintaining the protective cover; 8. a fixing member; 9. an illumination in-situ branch; 10. a dimming control cabinet; 51. a common mode choke coil; 52. a common mode filter capacitor; 53. a voltage drop detection module; 54. and a voltage compensation module.

Detailed Description

In order to make the technical solutions of the present invention better understood, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Various aspects and features of the present application are described herein with reference to the drawings.

These and other characteristics of the present application will become apparent from the following description of preferred forms of embodiment, given as non-limiting examples, with reference to the attached drawings.

It should also be understood that, although the present application has been described with reference to some specific examples, a person of skill in the art shall certainly be able to achieve many other equivalent forms of application, having the characteristics as set forth in the claims and hence all coming within the field of protection defined thereby.

The above and other aspects, features and advantages of the present application will become more apparent in view of the following detailed description when taken in conjunction with the accompanying drawings.

Specific embodiments of the present application are described hereinafter with reference to the accompanying drawings; however, it is to be understood that the disclosed embodiments are merely exemplary of the application, which can be embodied in various forms. Well-known and/or repeated functions and structures have not been described in detail so as to not unnecessarily obscure the present application with unnecessary or unnecessary detail. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present application in virtually any appropriately detailed structure.

The specification may use the phrases "in one embodiment," "in another embodiment," "in yet another embodiment," or "in other embodiments," which may each refer to one or more of the same or different embodiments in accordance with the application.

The embodiment of the invention provides a filtering junction box, which is applied to a dimming lighting circuit, as shown in fig. 2 to 4, the filtering junction box comprises a main line input socket 1, a main line output socket 3, a signal filter 5 and a plurality of branch output sockets 6, wherein the main line input socket 1 is used for being electrically connected with an input end of a main line cable 2, so that a main line power supply/signal is input to the main line input socket 1 through a 5G1.5 cable (2 cores are used for supplying power and 2 cores are used for signal plus 1 core grounding), and a power supply and a signal of the main line cable 2 are processed in parallel in the filtering junction box; a main line output socket 3 for outputting the power and signals of the main line cable 2 after parallel processing to another filtering junction box through another main line cable 2; and the signal filter 5 is used for filtering the dimming signal in the trunk line cable 2 and is electrically connected with the shunt output sockets 6 which are arranged in parallel, the shunt output sockets 6 are electrically connected with the lighting lamp 4 through the lighting local branches 9 which are correspondingly and electrically connected, and the signal filtering module adopts a common-mode conjugate current coil 51 and a common-mode filtering capacitor 52 to eliminate electromagnetic interference generated by the trunk line cable 2. Taking the dimming lighting circuit adopting the 5G1.5 cable (2-core power supply + 2-core signal + 1-core ground) as an example, wherein the lighting AC230V power supply (L1, L2 and GND respectively) is connected in parallel inside the filter junction box and then directly connected to the multiple branch output sockets 6; the 0-10V dimming signal (+/-) is filtered by the signal filtering module and then is respectively connected to each shunt output socket 6.

In some embodiments of the present invention, the signal filter 5 includes a common-mode choke coil 51 and a common-mode filter capacitor 52, wherein a common-mode induced current in the electromagnetic interference is suppressed after flowing through the common-mode choke coil 51 through the positive terminal and the negative terminal, and a common-mode induced voltage caused by the positive terminal and the negative terminal in the electromagnetic interference is released after being grounded through the common-mode filter capacitor 52, that is, the common-mode choke coil 51 and the common-mode filter capacitor 52 are mainly used by the signal filter module to eliminate the common-mode interference caused by the power cable (or core wire) along the main line, and the interference causes are as follows:

referring to fig. 1, in the same cable tray, a strong power supply line of some large electronic devices generates a distortion current during a starting or working process, and the distortion current generates a plurality of higher harmonics, which generate large electromagnetic interference to a voltage-type dimming signal (e.g., 0-10V); in the starting or disturbing process of the strong power supply circuit of the motor load, sudden change impact current can be generated, and the current can generate larger electromagnetic interference on voltage type dimming signals (such as 0-10V). The reason for this is that the electromagnetic induction generated by these distortion currents or abrupt change currents Δ i forms a significant amount of flux change after being continuously superimposed along the way in the long-distance trunk line

The induced electromotive force is superposed on a 0-10V voltage type dimming control signal along the way, instantaneous change of a voltage signal can be caused, even the voltage signal is higher than an upper limit of 10V or lower than a lower limit of 0V, a dimming illumination circuit can be short-term failed, and the illumination area can be bright, dark or twinkle, so that the experience of passengers can be greatly influenced.

When the signal filter 5 faces the electronic interference, the common mode induced current (in the same direction) caused by the external interference is effectively suppressed after flowing through the common mode conjugate current coil 51 via the + terminal and the-terminal (the positive terminal and the negative terminal); the common-mode induced voltage caused by external interference at the + terminal and the-terminal (positive terminal and negative terminal) is effectively released after being grounded through the common-mode filter capacitor 52;

since the common-mode-conjugate current coil 51 is connected in series in the 0-10V signal loop and affects the actual voltage emitted by the signal source, the signal filter 5 further includes a voltage drop detection module 53 and a voltage compensation module 54 for correcting the actual voltage emitted by the signal source, the voltage drop detection module 53 is used for detecting the influence value of the common-mode-conjugate current coil 51 connected in series in the signal loop on the actual voltage emitted by the signal source, and the voltage compensation module 54 is used for correcting the actual voltage emitted by the signal source based on the influence value. Through the technical treatment, the 0-10V dimming signal emitted by the control source can be accurately and stably transmitted to the dimming lighting equipment without distortion.

In some embodiments of the present invention, for convenience of installation and convenience of use, the power/signal input/output of the filtering junction box adopts a connection form of a pluggable quick connector, which facilitates quick installation and replacement of the device in the lighting line, i.e., the main line input socket 1, the main line output socket 3 and the shunt output socket 6 all adopt a connection form of a pluggable quick connector; simultaneously, the 0 ~ 10V signal filter module of core assembly of filtering terminal box also adopts a design of plug pin fast, make things convenient for the replacement and the maintenance of this module, furthermore, the filtering terminal box still is equipped with maintenance visor 7, its lid closes on the mounting groove that is used for pegging graft signal filter module, also ensure the leakproofness of equipment when conveniently maintaining, the filtering terminal box is equipped with protective housing equally, in addition, the filtering terminal box still is equipped with fixed part 8, it is used for fixing the filtering terminal box to the installation position, this fixed part 8 includes the mounting hole, installation slot etc..

In this embodiment, the main line input socket 1 adopts a male plug of a pin-type pluggable quick connector, and the charged input plug matched therewith is a female plug (a jack type), that is, the plug at the input end of the main line cable 2 adopts a female plug of a jack-type pluggable quick connector to match with the main line input socket 1; therefore, when the power supply is connected into the filtering junction box, the active electrified input plug is a jack type female head, and the electrified metal part cannot be touched by an operator, so that the safety is guaranteed;

meanwhile, the main line output socket 3 and the shunt output socket 6 both adopt female heads of pluggable quick connectors of jack type, and a plug of the output end of the other main line cable 2 connected with the main line output socket 3 and the shunt output socket 6 or a plug of a branch cable in the lighting local branch 9 adopts a male head of a pluggable quick connector of pin type, so that after a power supply is connected into the filtering junction box through the sockets, live metal parts of all output sockets cannot be touched by an operator, and safety is guaranteed.

Furthermore, the main line input socket 1 adopts a six-pin structure, the main line output socket 3 adopts a six-jack structure, the input end socket is a male plug, the output end socket is a female plug, five hole sites (two holes for signals +/-and three holes for power L1/L2/GND) are actually used, and one hole is reserved; by adopting the design, the input/output interface of the lighting main line and the output interface of each branch circuit can be clearly distinguished, and an operator can accurately and unmistakably connect each port of the filter junction box.

According to the technical scheme, the filter junction box provided by the embodiment of the invention has the advantages that the structural design is simple, the selection cost of devices is low, and the mass production and the manufacture are convenient; meanwhile, the installation, disassembly and maintenance are easy, and the early installation cost and the later maintenance cost are greatly reduced; furthermore, the electric interface of the filter junction box has perfect safety design and error-proof design, and has strong applicability.

An embodiment of the present invention further provides a dimming illumination circuit, as shown in fig. 2 to 4, including:

a plurality of filter junction boxes provided as in the above embodiments;

a dimming control cabinet 10 electrically connected to a plurality of filter junction boxes in a trunk line of the dimming illumination line in sequence in a bus chain topology through a trunk line cable 2;

the lighting fixtures 4 are electrically connected with corresponding filtering junction boxes through branch cables respectively, and each filtering junction box is electrically connected with the lighting fixtures 4 in a star-shaped distributed manner through the branch cables;

each filter junction box is used for blocking electronic interference generated in the process of conducting and superposing long-distance transmission of the trunk line.

Further, in the present embodiment, the dimming lighting line is applied to a ship in which the trunk line cable 2 can be laid in the same bundle as the power cable of the ship.

According to the technical solution, the dimming lighting circuit provided by the above embodiment of the present invention has all the beneficial effects of the above-mentioned filtering junction box, and at the same time, because the topological connection form of the filtering junction box in the dimming illumination circuit is the combination of bus chain type and star radiation, the trend of the illumination circuit is simpler and clearer, the field construction is more flexible and efficient, and simultaneously, the signal wire of the dimming illumination line of 0-10V can share a 5G1.5 cable with a power wire (the signal and the power cable do not need to be separated independently), and the dimming illumination cable can be laid with other power cables in the same beam according to the traditional convention, the method brings great convenience to the transformation of the old 0-10V dimming illumination circuit and the design of the new 0-10V illumination circuit, and avoids the increase of design cost, the increase of cable purchase cost and the increase of site construction cost caused by the change of the wiring mode.

The embodiment of the invention also provides a ship, as shown in fig. 2 to 4, the ship adopts the dimming illumination circuit provided by the embodiment, and the ship has all the beneficial effects of the dimming illumination circuit, and as the filtering junction box is adopted in the dimming illumination circuit of the ship, and the topological connection form of the filtering junction box in the dimming illumination circuit is the combination of bus chain type and star radiation, the trend of the illumination circuit is simpler and clearer, and the site construction is more flexible and efficient; meanwhile, the filtering junction box is more suitable for accurate transmission and parallel distribution of other 0-10V instruments/control signals of the ship based on the voltage drop compensation function of the filtering circuit. The interference of the filtering junction box on a power line is effectively inhibited, 0-10V dimming illumination is used as the most widely used dimming mode of a mail steamer at present, and the method can be completely suitable for the laying mode of the traditional non-dimming illumination line, namely, a signal line of the 0-10V dimming illumination line and a power line share a 5G1.5 cable (the signal and the power cable do not need to be independently separated), and the dimming illumination line can be laid with other power cables in the same beam mode according to the traditional convention.

The above embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and the scope of the present invention is defined by the claims. Various modifications and equivalents may be made by those skilled in the art within the spirit and scope of the present invention, and such modifications and equivalents should also be considered as falling within the scope of the present invention.

Claims

1. A filtering junction box applied to a dimming lighting circuit is characterized by comprising:

2. The filter junction box of claim 1,

the signal filter comprises a common mode choke coil and a common mode filter capacitor, wherein common mode induced current in the electromagnetic interference is suppressed after flowing through the common mode choke coil through a positive end and a negative end, and common mode induced voltage caused by the positive end and the negative end in the electromagnetic interference is released after being grounded through the common mode filter capacitor;

3. The filter junction box of claim 2,

the trunk line cable comprises 5 cores, wherein 2 cores are used for supplying power, 2 cores are used for transmitting dimming signals of 0V-10V, and 1 core is used for grounding.

4. The filter junction box of claim 1,

the mainline input socket, the mainline output socket and the shunt output socket are all connected in a pluggable quick connector mode, and the signal filtering module is designed by a pin which can be plugged and unplugged quickly.

5. The filter junction box of claim 4,

the main line input socket adopts a male head of a pin-type pluggable quick connector, and the plug at the input end of the main line cable adopts a female head of a hole-type pluggable quick connector so as to be matched with the main line input socket;

6. The filtering terminal box of claim 5,

the main line input socket is of a six-pin structure, the main line output socket is of a six-jack structure, and the shunt output socket is of a five-jack structure.

7. The filter junction box of claim 4, further comprising:

a fixing part to fix the filter junction box to a mounting location.

8. A dimming lighting circuit, comprising:

a plurality of filter junction boxes according to any one of claims 1-7;

9. The dimmed lighting circuit according to claim 8, wherein the dimmed lighting circuit is applied to a ship, wherein,

10. A marine vessel, characterized in that it employs a dimmed lighting circuit according to any one of claims 8-9.