Cabin lighting control system

Abstract

The invention relates to a cabin lighting control system. The problems that in the prior art, abnormity of any device of a cabin illumination control system usually causes breakdown of other devices or systems, and flexible mode combination control is difficult to carry out according to different use scenes are solved. The system comprises an RS485 bus, the RS485 bus is respectively connected with a plurality of cabin lighting controllers, a cabin lighting control panel and a reliability monitoring circuit, the cabin lighting controllers and the cabin lighting control panel are respectively and independently connected with dimming lamps, the cabin lighting control panel comprises an MCU processing unit, and the reliability monitoring circuit is connected with the MCU processing unit. The MCU processing unit is respectively connected with the touch display unit and the dimming lamp controller, the MCU processing unit is connected with a power supply switching module through a DC power supply conversion module, and the power supply switching module is connected with a power supply. The system has the advantages that modular and distributed structural design is adopted, combined control is flexible and convenient, damage of single equipment has no influence on control of the whole equipment, system paralysis cannot be caused, and control stability is good.

Description

Technical Field

[0001] The present invention relates to the technical field of lighting control, and in particular to a cabin lighting control system. Background Art

[0002] Cabin lighting control equipment is used to control lighting in ship dining rooms, rooms, and other cabins. It is a common device used in the daily lives and activities of crew members and should be simple, effective, and easy to operate. Currently, ships commonly use wall-mounted multi-way switches to control lighting. This control method has two major problems: First, in places with a large number of lighting fixtures, such as dining rooms, a large number of switches are often required, making control cumbersome and difficult to quickly switch between the on / off states of multiple lighting fixtures. Furthermore, existing cabin lighting control systems mostly use unified control. A single device failure often paralyzes other devices or systems, making it difficult to flexibly combine modes for different usage scenarios.

[0003] In order to address the deficiencies in the existing technology, people have conducted long-term explorations and proposed various solutions. For example, a Chinese patent document discloses a knob-type lighting control device for a marine cabin [CN201921773876.4], which includes a cabin, a lamp fixedly installed inside the cabin, a first control box and a second control box fixedly installed on the inner wall of the cabin, and the second control box is located at one end of the first control box, a first control terminal is fixedly installed in the middle of the first control box, and a second control terminal is fixedly installed in the middle of the second control box, a movable plate is movably provided on one side of the first control box and the second control box, a jack is provided on the top of the first control box and the second control box, and a slide groove is provided on both side walls of the first control box and the second control box.

[0004] The above solution has to some extent solved the problem in the existing technology that the cabin lighting system has multiple control scenarios, inconvenient operation and difficulty in rapid switching. However, this solution still has many shortcomings. For example, any abnormality of any device will usually cause other devices or systems to be paralyzed, and it is difficult to perform flexible mode combination control according to different usage scenarios. Summary of the Invention

[0005] The object of the present invention is to provide a cabin lighting control system in view of the above problems.

[0006] To achieve the above-mentioned objectives, the present invention adopts the following technical solutions: a cabin lighting control system, comprising an RS485 bus, to which are respectively connected several cabin lighting controllers, cabin lighting control panels and reliability monitoring lines; the cabin lighting controller and the cabin lighting control panel are respectively independently connected to dimming lamps and independently communicate and power them; the cabin lighting control panel comprises an MCU processing unit, and the MCU processing unit is respectively connected to a touch display unit and a dimming lamp controller; the MCU processing unit is connected to a power switching module via a DC power supply conversion module, and the power switching module is connected to a power supply.

[0007] In the above-mentioned cabin lighting control system, the power switching module is respectively connected to the power supply line AC1 and the power supply line AC2, the power supply line AC1 is connected to the dimming lamp power supply line AC2 through a manual switch, and a double-open and double-close AC contactor KM1 is provided on both the power supply line AC1 and the power supply line AC2.

[0008] In the above-mentioned cabin lighting control system, the MCU processing unit is respectively provided with a first power supply communication interface connected to the cabin lighting controller, a second power supply communication interface connected to the cabin lighting control surface, and a third power supply communication interface connected to the dimming lamp controller; the upper end of the dimming lamp controller is respectively provided with a lamp circuit dimming control interface, a lamp circuit high-voltage control interface and a power supply interface, and the lower end of the dimming lamp controller is respectively provided with a controller communication port connected to each lighting fixture and a control panel communication and expansion port connected to the second power supply communication interface. The dimming lamp controller is also provided with a high-voltage manual control button and a working indicator light.

[0009] In the above-mentioned cabin lighting control system, the cabin lighting controller includes a wall-mounted waterproof housing, a stainless steel wire rope vibration damper is provided at the bottom of the wall-mounted waterproof housing, and the stainless steel wire rope vibration damper is arranged between the wall-mounted waterproof housing and the mounting plate through stainless steel screws; the cabin lighting control panel includes a cover frame and a lower shell, the cover frame and the lower shell are made of aluminum-silicon-magnesium alloy material, the touch display unit is arranged on the cover frame, and the cover frame and the side of the lower shell are rigidly connected by screws.

[0010] In the above cabin lighting control system, the cabin lighting control system uses 10-bit hexadecimal code for communication, and the protocol instructions using 10-bit hexadecimal code are divided into regional mode control and regional channel control, wherein,

[0011] Regional mode control: functional areas can be divided and grouped according to the actual use environment of the system;

[0012] Regional channel control: The system can control a channel parameter value of a certain lamp.

[0013] In the above-mentioned cabin lighting control system, the cabin lighting control panel and the cabin lighting controller block are both programmed in C language and automatically run when powered on. The cabin lighting controller integrates a manual control function through a strong manual control button, that is, forcibly turning on or off the lighting fixtures. The control content of the cabin lighting control panel includes scene control, mode control, channel control, area master control and panel settings.

[0014] Scene control: switch different lighting intensities according to the usage scene;

[0015] Mode control: The touch display unit interface presets the lighting mode, and the home page controls the conversion between different modes;

[0016] Channel control: independently control the brightness of the lighting circuit in this area, and synchronously display the current brightness status and percentage;

[0017] Regional master control: In addition to local area control, the entire lighting area can also be centrally controlled through the panel;

[0018] Panel Settings: The Panel Settings page is used to set the current panel display parameters.

[0019] In the above-mentioned cabin lighting control system, the cabin lighting control system has a series structure, which is connected to the reliability monitoring circuit. The reliability monitoring circuit is connected to the touch display unit and outputs the reliability monitoring result. A reliability mathematical model is constructed based on the series structure and the reliability monitoring circuit. The reliability mathematical model is:

[0020]

[0021] Where: Rst is the system reliability;

[0022] Rit is the reliability of the i-th unit;

[0023] Assuming that the reliability of each module of the equipment conforms to the exponential law:

[0024] The reliability of the series system is: R S =R1×R2…R n ;

[0025] Equivalent failure rate of series system: λ S =λ1+λ2+…λ n ;

[0026] Mean time between failures of series systems:

[0027] In the above-mentioned cabin lighting control system, the reliability mathematical model uses the engineering weighted allocation method to distribute the reliability. The distribution value of each module and unit is calculated according to the following engineering distribution:

[0028]

[0029] Where: MTBF i is the MTBF value of the module;

[0030] MTBF S is the MTBF value of the entire device;

[0031] K j is the weighting factor assigned to a submodule, and

[0032] In the cabin lighting control system described above, reliability prediction calculations are performed step by step from the lower level to the top level based on the equipment reliability mathematical model. First, the reliability data of each unit and module is calculated, and then the reliability data of the equipment is calculated. The unit and module reliability prediction formula is:

[0033]

[0034] Where: λ is the total failure rate of the device or module;

[0035] N i is the number of modules or units of type i used;

[0036] λG i is the failure rate of the module or unit of type i;

[0037] πQ i is the quality coefficient of the i-th module or unit.

[0038] In the above-mentioned cabin lighting control system, the insulation resistance standard of the power supply 36 access end to the ground is: cold state ≥ 100MΩ, hot state ≥ 20MΩ, and the power supply 36 is connected to the output overvoltage protection circuit.

[0039] Compared with the prior art, the advantages of the present invention are:

[0040] 1. The system adopts a distributed control architecture and establishes a unified communication protocol between the cabin lighting controller, cabin lighting control panel, and dimming lamps (with communication functions). The controller and panel can be flexibly combined, and any failure of any device will not affect the normal operation of other devices or cause system paralysis.

[0041] 2. The cabin lighting control panel is based on a touchscreen solution, integrating scene control for each area and lighting channel control into the LCD touch panel. Page functions can be flexibly set according to different application scenarios. A unified coding format is used to transmit control signals to the control bus.

[0042] 3. The cabin lighting controller utilizes a modular design. The lighting control module utilizes an MCU control core, standardizing lighting control functions. It can receive and interpret control commands from the cabin lighting control panel. It can also be expanded with other cabin lighting controllers via a standard bus, enabling broader system control.

[0043] 4. The lighting fixtures can accept standard control instructions from the cabin lighting controller and the cabin lighting control panel, and internally parse the instruction content to achieve unified control.

[0044] 5. The system develops standard scene control command protocols and channel control command protocols through the RS485 bus. This enables standardized calls for lighting scenes, significantly reduces lighting control bus data, improves communication quality, and ensures consistent lighting fixtures. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 is a topological diagram of the communication system of the present invention;

[0046] Figure 2 It is the design principle diagram of the present invention;

[0047] Figure 3 is a schematic diagram of the power switching module in the present invention;

[0048] Figure 4 It is a schematic structural diagram of the cabin lighting controller in the present invention;

[0049] Figure 5 It is the principle diagram of the control panel in the present invention;

[0050] Figure 6 It is the protocol definition in the present invention with reference to FIG;

[0051] Figure 7 It is the regional mode control instruction reference diagram in the present invention;

[0052] Figure 8 It is the regional channel control instruction reference diagram in the present invention;

[0053] Figure 9 This is a control step diagram of the cabin lighting control panel in the present invention;

[0054] Figure 10 This is a control interface diagram of the cabin lighting control panel in the present invention;

[0055] Figure 11 This is a schematic diagram of the output overvoltage protection circuit in the present invention;

[0056] Figure 12 This is a schematic diagram of the cabin lighting controller interface in the present invention;

[0057] In the figure: RS485 bus 1, cabin lighting controller 2, wall-mounted waterproof housing 21, stainless steel wire rope vibration absorber 22, cabin lighting control panel 3, MCU processing unit 31, first power supply communication interface 311, second power supply communication interface 312, third power supply communication interface 313, fourth power supply communication interface 314, fifth power supply communication interface 315, touch display unit 32, dimming lamp controller 33, lamp circuit dimming control interface 331, lamp circuit high-voltage control interface 332, power supply interface 333, controller communication port 334, control panel communication and expansion port 335, high-voltage manual control button 336, working indicator light 337, DC power supply conversion module 34, power switching module 35, manual switch 351, power supply 36, dimming lamp 4. DETAILED DESCRIPTION

[0058] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0059] like Figure 1-2 As shown, a cabin lighting control system includes an RS485 bus 1, to which are respectively connected several cabin lighting controllers 2, cabin lighting control panels 3 and reliability monitoring lines 5, the cabin lighting controller 2 and the cabin lighting control panel 3 are respectively independently connected to the dimming lamps 4 and independently communicate and power them, the cabin lighting control panel 3 includes an MCU processing unit 31, and the MCU processing unit 31 is respectively connected to the touch display unit 32 and the dimming lamp controller 33, the MCU processing unit 31 is connected to the power switching module 35 through the DC power supply conversion module 34, and the power switching module 35 is connected to the power supply 36.

[0060] To ensure system stability and flexible scalability, a distributed control architecture is adopted. Each device is relatively independent, and any failure in any one device does not affect the normal operation of other devices. The decentralized system prevents failures in central control devices from causing the entire system to fail. Communication between the cabin lighting controller 2, the cabin lighting control panel 3, and communication-supporting lamps uses RS485 bus broadcasting. System bus devices are generally divided into control devices and execution devices. Control devices interact with users and are responsible for sending control commands via the bus. Controlled devices accept commands by default and do not send them. This ensures that every intelligent device on the bus receives control commands in a timely manner, while effectively avoiding bus command conflicts.

[0061] 1. The cabin lighting control panel 3, as a control device, receives user commands and sends control commands to lamps or controllers when the bus is idle. All devices on the bus can listen for control commands, analyze whether they are controlled objects, and determine the execution content. Other cabin lighting control panels 3 can also synchronize their own display status based on the control command content.

[0062] 2. The cabin lighting controller 2 and lighting fixtures, as controlled devices, continuously monitor bus control commands, analyze the command content, and choose to execute or discard the command. Only when a query command is received will the controlled device respond with the corresponding parameters based on the query content.

[0063] 3. To avoid the bus being busy and devices being out of sync when multiple control commands are sent within a short period of time due to simultaneous control of multiple devices, the control status of multiple devices can be pre-stored to the corresponding mode number, and the sub-state can be pre-stored in the controller or lamp. When the bus switches to the corresponding mode control, only one mode control code needs to be sent to control all lighting fixtures simultaneously.

[0064] 4. This system is superior to other master-slave communication mechanisms. All control must be handled by the host computer; a host failure can paralyze the entire control system. The bus mechanism utilizes a distributed architecture, ensuring that each cabin lighting control panel 3 and controlled device are relatively independent. As long as the bus between the cabin lighting control panel 3 and the controlled device is functioning properly, control is possible. A failure in one device does not affect the execution of other control functions, improving system reliability.

[0065] like Figure 3 As shown, the power switching module 35 is respectively connected to the power supply line AC1 and the power supply line AC2. The power supply line AC1 is connected to the dimming lamp 4 through the manual switch 351, and the power supply line AC2 is connected to the DC power supply conversion module 34. A double-open and double-close AC contactor KM1 is provided on both the power supply line AC1 and the power supply line AC2.

[0066] The main function of the power switching module 35 is to realize the automatic switching function between two power supply modes for the lighting controller system. Its power supply priority is: the power supply line AC1 is higher than the power supply line AC2.

[0067] Solution Implementation: The double-open, double-close AC contactor KM1 automatically switches between power lines AC1 and AC2. When AC1 is energized, the induction coil automatically switches contactor channel 1 to AC1, and AC1 now provides power to the system. If AC1 loses power, contactor channel 1 automatically switches to AC2, and AC2 now provides power to the system.

[0068] The system is designed to have a load of ≤2000W, with a reserved lighting control circuit for power supply. Considering the power startup pulse, the circuit breaker for the downstream lighting power supply is 16A. The contactor is 25A current-carrying to ensure safety and longevity.

[0069] The MCU processing unit 31 is respectively provided with a first power supply communication interface 311 connected to the cabin lighting controller 2, a second power supply communication interface 312 connected to the cabin lighting control surface, and a third power supply communication interface 313 connected to the dimming lamp controller 33. The DC power supply conversion module 34 is respectively provided with a fourth power supply communication interface 314 connected to the cabin lighting controller 2 and a fifth power supply communication interface 315 connected to the cabin lighting control panel 3;

[0070] like Figure 12 As shown, the upper end of the dimming lamp controller 33 is respectively provided with a lamp circuit dimming control interface 331, a lamp circuit high-voltage control interface 332 and a power supply interface 333, and the lower end of the dimming lamp controller 33 is respectively provided with a controller communication port 334 connected to each lighting fixture and a control panel communication and expansion port 335 connected to the second power supply communication interface 312. The dimming lamp controller 33 is also provided with a high-voltage manual control button 336 and a working indicator light 337.

[0071] The MCU processing unit 31 is the main lighting control unit, primarily responsible for controlling and communicating with the cabin lighting controller 2, the cabin lighting control panel 3, and the lighting fixtures. The control module also stores the lighting control parameter status for each application mode, enabling control of the control panel mode. The lighting control module design is based on existing, mature lighting control modules and meets ZZKK requirements.

[0072] The strong power manual control button 336 is for the lamp circuit powered by the controller. When the cabin lighting controller 2 or the cabin lighting control panel 3 has an abnormality or the communication status is abnormal, the lamp can be turned on and off by manual switch to achieve basic manual control function.

[0073] like Figure 4As shown, the cabin lighting controller 2 includes a wall-mounted waterproof housing 21, with a stainless steel wire rope vibration damper 22 installed at the bottom. The stainless steel wire rope vibration damper 22 is installed between the wall-mounted waterproof housing 21 and the mounting plate via stainless steel screws. The structural material is high-quality 316 stainless steel, and is manufactured using sheet metal processing and laser welding technology. It has high processing precision and a solid and reliable structure. The stainless steel wire rope vibration damper can withstand environmental stresses such as impact and vibration from any direction, improving stability. The non-metallic components used in the cabin lighting controller 2 are made of materials that will not release toxic or harmful gases or substances during long-term use or combustion. The internal wiring is flame-retardant, low-smoke, halogen-free CBVJR type wire, which can be used safely and long-term under the environmental conditions inside the cabin lighting controller 2 box.

[0074] a. The cabin lighting controller 2 is equipped with three single-phase AC220V power supplies on both sides of the ship, and also provides an AC220V interface to the lighting fixtures;

[0075] b. The cabin lighting controller 2 has a five-way communication interface, which provides a communication signal interface to the cabin lighting control panel 3 and provides an extended communication interface;

[0076] c. Set up two power supply interfaces on the cabin lighting controller 2 to connect to the cabin lighting control panel.

[0077] The cabin lighting control panel 3 includes a cover frame and a lower shell, which are made of aluminum-silicon-magnesium alloy. The touch display unit 32 is arranged on the cover frame, and the cover frame and the side of the lower shell are rigidly connected by screws.

[0078] like Figure 5 As shown, the cabin lighting control panel 3 adopts an integrated module design, and its main components are: DC power supply conversion unit, human-machine touch display unit, MCU processing unit and communication interface driver.

[0079] The cabin lighting control panel 3 is provided with two DC1 and DC2 power supply ports, one of which is reserved. It is provided with two communication interfaces, one of which is reserved, and a lighting fixture control interface.

[0080] Among them, the main functions of the DC power supply conversion unit are: providing stable DC power supply for the lighting control panel, with anti-reverse connection protection function, and can also provide power for other extended control panels.

[0081] The touch display unit's primary function is to provide a human-machine interactive control interface for the lighting control panel. The interface supports redesign, allowing for customized display content based on the actual installation location and functionality. The touch display unit communicates user interface status with the MCU via a serial port, enabling lighting control and status feedback. The touch display unit also features touch audible feedback, enhancing the interactive experience.

[0082] The MCU processing unit's main functions are: executing control commands issued by the touch display unit and reporting lighting control status to the touch display unit. It is responsible for communicating with the lighting controller and other panels, and supports sending dimming control commands to dimming lamps. It also internally stores lighting control mode status to facilitate mode control and switching.

[0083] like Figure 6 As shown, this cabin lighting control system uses 10-bit hexadecimal code for communication, and the protocol instructions using 10-bit hexadecimal code are divided into regional mode control and regional channel control, among which,

[0084] Area mode control: Functional areas can be divided and grouped according to the actual use environment of the system. For example, private room 1 is defined as zone 1, and private room 2 is defined as zone 2. At the same time, the specific lighting mode of a certain area is programmed and pre-stored in the controller. For example, the full opening of zone 1 in private room is mode 1, and the full closing is mode 2. At this time, the control panel sends a single command 1 zone 1 scene, and the system executes the full opening mode of private room 1; Figure 7 shown.

[0085] Regional channel control: The system can control a channel parameter value of a certain lamp. For example, it can control the brightness of a specific lamp. And it can query the status. Control the brightness of channel 5 in zone 1 to 100%; Figure 8 shown.

[0086] The cabin lighting control panel 3 and the cabin lighting controller 2 are both programmed in C language and run automatically when powered on. The cabin lighting controller 2 integrates a manual control function through a strong manual control button 336, which can forcibly turn on or off the lighting fixtures. The control content of the cabin lighting control panel 3 includes scene control, mode control, channel control, area master control and panel settings. The control process is as follows: Figure 9 As shown,

[0087] Scene control: switch different lighting intensities according to the usage scene;

[0088] Mode control: The touch display unit 32 interface presets the lighting mode, and the home page controls the conversion between different modes;

[0089] Channel control: independently control the brightness of the lighting circuit in this area, and synchronously display the current brightness status and percentage;

[0090] Regional master control: In addition to local area control, the entire lighting area can also be centrally controlled through the panel;

[0091] Panel Settings: The Panel Settings page is used to set the current panel display parameters.

[0092] Control interface such as Figure 10 shown.

[0093] The cabin lighting control system has a series structure, which is connected to the reliability monitoring circuit 5. The reliability monitoring circuit 5 is connected to the touch display unit 32 and outputs the reliability monitoring results. A reliability mathematical model is constructed based on the series structure and the reliability monitoring circuit 5. The reliability mathematical model is:

[0094]

[0095] Where: Rs(t) is the system reliability;

[0096] Ri(t) is the reliability of the i-th unit;

[0097] Assuming that the reliability of each module of the equipment conforms to the exponential law:

[0098] The reliability of the series system is: R S =R1×R2...R n ;

[0099] Equivalent failure rate of series system: λ S =λ1+λ2+…λ n ;

[0100] Mean time between failures of series systems:

[0101] The reliability mathematical model uses the engineering weighted allocation method to distribute reliability. The distribution value of each module and unit is calculated according to the following engineering distribution:

[0102]

[0103] Where: MTBF i is the MTBF value of the module;

[0104] MTBF S is the MTBF value of the entire device;

[0105] K j is the weighting factor assigned to a submodule, and

[0106] K j To account for the weighting factors of different factors, we consider the following factors: Kj1 complexity factor, Kj2 criticality factor, Kj3 standardization factor, Kj3 environmental factor, and Kj5 component quality factor. Based on the above five weighting factors, the weighting factor value range of each module can be obtained, as shown in Table 1.

[0107]

[0108] Table 1

[0109] The reliability index of the whole machine MTBF ≥ 10000 hours, which can be calculated from Table 3. The MTBF value allocated to each module is shown in Table 2.

[0110] Serial number Unit module <![CDATA[MTBF i ]]> 1 breaker MTBF2 = 10,000 × 8.32 / 1 = 83,200 hours 2 AC contactor MTBF1 = 10,000 × 8.32 / 2.35 = 35,404 hours 3 Intelligent control module MTBF3 = 10,000 × 8.32 / 1.71 = 48,654 hours 4 MCU processing unit MTBF5 = 10,000 × 8.32 / 1.43 = 58,181 hours 5 Touch display unit MTBF6 = 10,000 × 8.32 / 0.78 = 106,666 hours 6 Panel power supply MTBF4 = 10,000 × 8.32 / 1.05 = 79,238 hours

[0111] Table 2

[0112] Among them, reliability prediction calculation is carried out step by step from the low layer to the top layer; first calculate the reliability data of each unit and module, and then calculate the reliability data of the equipment. The unit and module reliability prediction formula is:

[0113]

[0114] Where: λ is the total failure rate of the device or module;

[0115] N i is the number of modules or units of type i used;

[0116] λG i is the failure rate of the module or unit of type i;

[0117] πQ i is the quality coefficient of the i-th module or unit.

[0118] The equipment is used in a standard ship cabin environment (a weatherproof, ordinary ship cabin often subject to strong vibration and shock, such as the interior of a surface warship or below deck). Therefore, the component application environment is NS2, and the corresponding general failure rate λGi is obtained by table lookup. The reliability of the housing structure, cables, and switches is assumed to be 1. Using the above formula, table lookup and calculation, the operating failure rate λ of each module can be obtained. The following reliability estimates are calculated based on the reliability block diagram and mathematical model described above. The failure rates of the MCU processing unit are shown in Table 3.

[0119]

[0120] Table 3

[0121] Based on the above module parameters and the main components of each module, the estimated MTBF of the whole machine reliability is 56365h.

[0122] The insulation resistance standard of the power supply 36 access terminal to the ground is: cold state ≥ 100MΩ, hot state ≥ 20MΩ, and the power supply 36 is connected to the output overvoltage protection circuit. Figure 11 As shown,

[0123] In summary, the principles of this embodiment are: a distributed control architecture is employed, with a unified communication protocol established between the cabin lighting controller 2, cabin lighting control panel 3, and dimming lamps. This allows for flexible combinations of controllers and panels, ensuring that a failure in any one device does not affect the normal operation of the others or cause system failure. The cabin lighting controller 2 employs a modular design, with the lighting control module utilizing an MCU processing unit 31 as the control core, standardizing lighting control functions. This module can receive and interpret control commands issued by the cabin lighting control panel 3 and can be expanded with other cabin lighting controllers 2 via the RS485 bus 1, enabling wider system control.

[0124] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope of the appended claims.

[0125] Although this document frequently uses terms such as RS485 bus 1, cabin lighting controller 2, wall-mounted waterproof housing 21, stainless steel wire rope vibration damper 22, cabin lighting control panel 3, MCU processing unit 31, first power supply communication interface 311, second power supply communication interface 312, third power supply communication interface 313, fourth power supply communication interface 314, fifth power supply communication interface 315, touch display unit 32, dimming lamp controller 33, lamp circuit dimming control interface 331, lamp circuit high-voltage control interface 332, power supply interface 333, controller communication port 334, control panel communication and expansion port 335, high-voltage manual control button 336, working indicator light 337, DC power supply conversion module 34, power switching module 35, manual switch 351, power supply 36, and dimming lamp 4, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional restrictions is contrary to the spirit of the present invention.

Claims

1. A cabin lighting control system, comprising an RS485 bus (1), to which are respectively connected a plurality of cabin lighting controllers (2), a cabin lighting control panel (3) and a reliability monitoring circuit (5), characterized in that: The cabin lighting controller (2) and the cabin lighting control panel (3) are independently connected to the dimming lamp (4) and perform independent communication and power supply. The cabin lighting control panel (3) includes an MCU processing unit (31), and the MCU processing unit (31) is respectively connected to the touch display unit (32) and the dimming lamp controller (33). The MCU processing unit (31) is connected to a power switching module (35) via a DC power supply conversion module (34), and the power switching module (35) is connected to a power supply (36).

2. A cabin lighting control system according to claim 1, characterized in that: The power switching module (35) is connected to a power supply line AC1 and a power supply line AC2 respectively. The power supply line AC1 is connected to a dimming lamp (4) via a manual switch (351). The power supply line AC2 is connected to a DC power supply conversion module (34). A double-open and double-close AC contactor KM1 is provided on both the power supply line AC1 and the power supply line AC2.

3. A cabin lighting control system according to claim 1, characterized in that: The MCU processing unit (31) is provided with a first power supply communication interface (311) connected to the cabin lighting controller (2), a second power supply communication interface (312) connected to the cabin lighting control surface, and a third power supply communication interface (313) connected to the dimming lamp controller (33); the upper end of the dimming lamp controller (33) is provided with a lamp circuit dimming control interface (331), a lamp circuit strong current control interface (332), and a power supply interface (333); and the lower end of the dimming lamp controller (33) is provided with a controller communication port (334) connected to each lighting lamp and a control panel communication and expansion port (335) connected to the second power supply communication interface (312); the dimming lamp controller (33) is also provided with a strong current manual control button (336) and a working indicator light (337).

4. A cabin lighting control system according to claim 1, characterized in that: The cabin lighting controller (2) includes a wall-mounted waterproof housing (21), a stainless steel wire rope vibration damper (22) is provided at the bottom of the wall-mounted waterproof housing (21), and the stainless steel wire rope vibration damper (22) is set between the wall-mounted waterproof housing (21) and the installation hanging plate through stainless steel screws.

5. A cabin lighting control system according to claim 1, characterized in that: This cabin lighting control system uses 10-bit hexadecimal code for communication, and the 10-bit hexadecimal code protocol instructions are divided into regional mode control and regional channel control, among which, Regional mode control: functional areas can be divided and grouped according to the actual use environment of the system; Regional channel control: The system can control a channel parameter value of a certain lamp.

6. A cabin lighting control system according to claim 5, characterized in that: The cabin lighting control panel (3) and the cabin lighting controller (2) are both programmed based on C language and automatically run when powered on. The cabin lighting controller (2) integrates a manual control function through a strong electric manual control button (336), that is, forcibly turning on or off the lighting fixture; the control content of the cabin lighting control panel (3) includes scene control, mode control, channel control, area master control and panel setting; wherein, Scene control: switch different lighting intensities according to the usage scene; Mode control: the touch display unit (32) has preset lighting modes on its interface, and the home page controls the switching between different modes; Channel control: independently control the brightness of the lighting circuit in this area, and synchronously display the current brightness status and percentage; Regional master control: In addition to local area control, the entire lighting area can also be centrally controlled through the panel; Panel Settings: The Panel Settings page is used to set the current panel display parameters.

7. A cabin lighting control system according to claim 1, characterized in that: The cabin lighting control system is a series structure, which is connected to the reliability monitoring circuit (5), and the reliability monitoring circuit (5) is connected to the touch display unit (32) and outputs the reliability monitoring result; a reliability mathematical model is constructed based on the series structure and the reliability monitoring circuit (5): the reliability mathematical model is: Where: Rs(t) is the system reliability; Ri(t) is the reliability of the i-th unit; Assuming that the reliability of each module of the equipment conforms to the exponential law: The reliability of the series system is: R s =R1×R2…R n ; Equivalent failure rate of series system: λ s =λ1+λ2+…λ n ; Mean time between failures of series systems:

8. A cabin lighting control system according to claim 7, characterized in that: The reliability mathematical model uses the engineering weighted allocation method to distribute reliability. The distribution value of each module and unit is calculated according to the following engineering distribution: Where: MTBF i is the MTBF value of the module; MTBF S is the MTBF value of the entire device; K j is the weighting factor assigned to a submodule, and 9. A cabin lighting control system according to claim 8, characterized in that: According to the reliability mathematical model of the equipment, reliability prediction calculation is performed step by step from the low level to the top level; first calculate the reliability data of each unit and module, and then calculate the reliability data of the equipment. The unit and module reliability prediction formula is: Where: λ is the total failure rate of the device or module; N i is the number of modules or units of type i used; λG i is the failure rate of the module or unit of type i; πQ i is the quality coefficient of the i-th module or unit.

10. A cabin lighting control system according to claim 1, characterized in that: The insulation resistance standard of the power supply (36) access end to the ground is: cold state ≥ 100MΩ, hot state ≥ 20MΩ, and the power supply (36) is connected to the output overvoltage protection circuit.

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