High safety centralized optical fiber transmission laser building lighting system

Abstract

The present application relates to the technical field of building lighting, in particular to a high-safety centralized optical fiber transmission laser building lighting system, aiming to solve the problems of large electrical safety hazards, weak centralized control ability, insufficient emergency reliability and high maintenance cost of the existing building lighting system. The system comprises a distribution box, a power conversion unit (including surge resistance & filtering, AC-DC conversion, UPS emergency battery module), a laser light source unit (including centralized lighting multi-node central control, laser drive, laser, air / water cooling heat dissipation control unit), a central control console, an optical fiber transmission link and diversified lighting terminals. Electrical energy is only transmitted in the distribution box-power conversion unit and power conversion unit-laser light source unit sections, and the lighting terminals have no electrical wiring, but transmit light energy through optical fiber. The system can eliminate electrical fire risk, realize efficient centralized operation and maintenance, ensure stable emergency lighting, reduce long-term operation and maintenance cost, and is suitable for various building scenes such as commercial complexes, high-rise residences, etc.

Description

Technical Field

[0001] This invention relates to the field of building lighting technology, specifically a high-security centralized fiber optic transmission laser building lighting system. Background Technology

[0002] Building lighting is a core component of building infrastructure, and its safety, energy efficiency, and ease of maintenance directly affect personnel safety and operating costs. Existing building lighting systems mainly suffer from the following deficiencies: Firstly, traditional LED or fluorescent lighting systems use distributed electrical wiring from the mains power supply to the lamps. Each lamp needs to be connected to the mains power circuit separately, resulting in dense electrical wiring in buildings. In high-rise or large commercial buildings, the length of electrical wiring can reach several kilometers. This not only leads to high construction costs but also poses a high risk of electrical fires caused by aging wiring and short circuits. At the same time, under the distributed control mode, lamp faults need to be checked one by one, resulting in low maintenance efficiency. The average annual maintenance cost accounts for 15%-20% of the total investment in the lighting system.

[0003] Secondly, although some new laser lighting systems use fiber optics to transmit light energy, they lack centralized management and safety design: most systems are not equipped with a unified temperature control module, and the laser operates in a high-temperature environment for a long time, shortening its lifespan by 30%-50%; some systems lack emergency power supply configuration, and the lighting immediately fails when the mains power is interrupted, which cannot meet the mandatory standard requirements for building emergency lighting; in addition, the power supply unit of the existing laser lighting system does not integrate surge protection, and mains power fluctuations (such as lightning strikes and grid impacts) can easily damage core components, resulting in insufficient system reliability.

[0004] Third, existing emergency lighting systems are mostly separate circuits independent of daily lighting, resulting in redundant wiring and high costs. At the same time, the status of emergency lights cannot be monitored in real time, making it difficult to detect faults in a timely manner. This makes it difficult to ensure the safety of personnel evacuation during emergencies such as fires and earthquakes.

[0005] In summary, existing building lighting systems suffer from significant electrical safety hazards, weak centralized control capabilities, insufficient emergency reliability, and high maintenance costs. There is an urgent need for a new type of lighting system that integrates centralized control and multiple safety features, with fiber optic power transmission as its core. Summary of the Invention

[0006] To address the shortcomings of existing building lighting systems, the present invention aims to provide a high-safety centralized fiber optic transmission laser building lighting system: eliminating the risk of electrical fires by replacing electrical wiring with fiber optics, achieving efficient operation and maintenance through centralized management and control, improving system safety and reliability through modules such as temperature control, surge protection, and emergency power supply, while adapting to diverse lighting scenarios.

[0007] The technical solution adopted by this invention to solve its technical problem is: a high-security centralized fiber optic transmission laser building lighting system, comprising: a power distribution box for connecting to mains power and supplying power to the system; a power conversion unit connected to the power distribution box, including a surge protection and filtering module, an AC-DC power conversion module, and a UPS emergency battery module, for realizing safe filtering, AC-DC conversion, and emergency energy storage of power; and a laser source unit connected to the power conversion unit, including a centralized lighting multi-node central control unit, at least one laser drive unit, a corresponding number of lasers, and a wind / water cooling heat dissipation control unit, for outputting laser energy and realizing centralized... The system includes: a dispatch and temperature control system; a central control console, which communicates with the centralized lighting multi-node central control unit of the laser light source unit via an Ethernet switch for remote management of system operation; an optical fiber transmission link, connected to the output end of the laser for transmitting laser energy; and diverse lighting terminals, connected to the output end of the optical fiber transmission link, which integrate fluorescent ceramic components to convert the laser into white light illumination, including emergency indicator lights, downlights, and other lamp types. In this system, electrical power transmission only exists in the sections from the distribution box to the power conversion unit and from the power conversion unit to the laser light source unit. The lighting terminals have no electrical wiring; light energy is transmitted via optical fiber.

[0008] Specifically, the rated operating voltage of the surge protection and filtering module is AC220V±10%, the surge suppression capability is ≥20kA (8 / 20μs waveform), and the filtering bandwidth is 50Hz±2Hz.

[0009] Specifically, the centralized lighting multi-node central control unit has a built-in STM32F4 series main control chip, supports independent scheduling of at least 8 laser drive units, and has an RJ45 Ethernet interface with a transmission rate of ≥100Mbps.

[0010] Specifically, the output current range of the laser driving unit is 0-10A, the current stability is ≤±0.5%, and it supports PWM dimming and overcurrent protection functions.

[0011] Specifically, the air / water cooling heat dissipation control unit includes a temperature sensor, an axial fan, and a water chiller. The axial fan is activated when the laser temperature is ≥50℃, and the water chiller is activated when the temperature is ≥60℃. The temperature control accuracy is ≤±2℃.

[0012] Specifically, the optical fiber transmission link is a multimode silica fiber with a core diameter of 150-200μm, a numerical aperture of 0.20-0.22, a transmission loss of ≤0.2dB / km, and FC / APC type interfaces at both ends.

[0013] Specifically, the fluorescent ceramic component of the diversified lighting terminal is a YAG-based Ce-doped component. 3+The fluorescent ceramic can convert 445-455nm blue laser light into white light with a color temperature of 4500-5500K, with a light conversion efficiency of ≥80%.

[0014] Specifically, the central control unit includes a touch screen and a control host, which can display the working status of each laser, temperature data and remaining UPS power in real time, and supports remote switching and dimming operations.

[0015] Specifically, the rated capacity of the UPS emergency battery module is ≥100Ah, which can maintain the system's emergency lighting output for at least 90 minutes when the mains power is interrupted.

[0016] Specifically, the input voltage of the AC-DC power conversion module is AC220V, the output voltage is DC24V, the rated output power is ≥500W, and the conversion efficiency is ≥92%.

[0017] The beneficial effects of this invention are: Significantly enhances electrical safety: The system uses fiber optics to replace traditional electrical wiring to transmit light energy to the lighting terminals. The lighting terminals are completely free of electrical wiring, eliminating the risk of electrical fires caused by aging lines and short circuits from the source. At the same time, the power conversion unit integrates surge protection and filtering functions, which can effectively resist the damage to core components caused by mains power fluctuations (such as lightning strikes and grid impacts), further ensuring the safe operation of the system. It is especially suitable for high-rise buildings, large commercial buildings and other scenarios with high safety requirements.

[0018] Achieve efficient centralized operation and maintenance management: The system is equipped with a centralized lighting multi-node central control unit and a remote control console, which can monitor the laser's working status, temperature and emergency power remaining in real time. It supports remote switching, dimming and other operations, eliminating the need to check each lamp individually, greatly shortening the fault response and troubleshooting time. At the same time, centralized scheduling of multiple laser drive units avoids the cumbersome management of traditional decentralized lighting systems, significantly improving the management efficiency of building lighting.

[0019] Reduce long-term operation and maintenance costs: On the one hand, the durability of fiber optic transmission links is superior to traditional electrical circuits, reducing the frequency of line replacement and maintenance; on the other hand, centralized temperature control modules (air / water cooling heat dissipation control units) can effectively protect lasers, preventing them from having their lifespan shortened due to high temperatures, and reducing the replacement cost of core components; in addition, the system integrates daily lighting and emergency lighting into one unit, eliminating the need to lay out a separate circuit for emergency lighting, reducing initial construction wiring costs and subsequent repeated maintenance costs.

[0020] Ensuring reliable emergency lighting response: The system is equipped with a UPS emergency battery module, which can automatically switch to emergency power supply mode when the mains power is interrupted, ensuring stable output of emergency lighting and meeting the mandatory requirements of building emergency lighting standards; at the same time, in some scenarios, the priority scheduling of emergency lighting can be strengthened, giving priority to lighting in key areas such as evacuation routes and stairwells, providing safety assurance for personnel evacuation in emergencies such as fires and earthquakes, and solving the problems of difficult monitoring of the status and difficulty in detecting faults in traditional emergency lighting.

[0021] Balancing energy efficiency optimization and scenario adaptability: The AC-DC power conversion module can achieve efficient power conversion. Combined with PWM dimming function, it can flexibly adjust the brightness according to the lighting needs of different areas and times of the building, reducing unnecessary energy waste. In addition, the diverse lighting terminals (such as downlights and emergency indicator lights) have built-in high-efficiency fluorescent ceramic components, which can stably realize the conversion from laser to white light. Moreover, the lamp head type can be flexibly configured according to different building scenarios such as commercial complexes, high-rise residential buildings, and hospitals, with strong adaptability.

[0022] Extending the lifespan of core components: The air / water cooling control unit can automatically activate heat dissipation measures according to the laser temperature, avoiding the laser from working in a high-temperature environment for a long time and effectively slowing down the aging rate of components; at the same time, the laser drive unit has an overcurrent protection function, which can prevent abnormal current from damaging the laser, further extending the lifespan of core components, ensuring long-term stable operation of the system, and reducing frequent maintenance and replacement due to component wear and tear. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Figure 1 This is a schematic diagram of the structure of the high-security centralized fiber optic transmission laser building lighting system provided by the present invention. Detailed Implementation

[0025] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0026] like Figure 1 As shown, the high-security centralized fiber optic transmission laser building lighting system of the present invention includes the following modules: Distribution box: Connected to municipal AC220V mains power, serving as the system's power input port; Power conversion unit: Surge protection and filtering module: Suppresses surge impacts and electromagnetic interference in the mains power supply, ensuring stable power supply to subsequent modules; AC-DC converter module: Converts AC220V mains power to DC24V low-voltage DC power, reducing the risk of power transmission; UPS emergency battery module: Automatically switches to provide emergency power to the system when the mains power is interrupted; Laser source unit: Centralized lighting multi-node central control unit: As the control core of the system, it schedules the working status of multiple laser drive units; Laser drive unit: provides a stable current to the laser and enables power regulation; Laser: Outputs blue laser light at 445-455nm; Air / Water Cooling Control Unit: Monitors laser temperature in real time and starts the fan or water cooler for heat dissipation; Central control console: Communicates with the centralized control unit via Ethernet to achieve remote monitoring and control of the system status; Fiber optic transmission link: transmits blue laser light output from a laser, replacing traditional electrical wiring; Diverse lighting terminals: Integrating fluorescent ceramic components to convert blue laser light into white light, including emergency indicator lights, downlights, and other lamp head types.

[0027] Example 1: High-Security Centralized Fiber Optic Laser Building Lighting System (Commercial Complex Application) This embodiment is the basic implementation of the system, adapted to the daily and emergency lighting needs of a 10-story commercial complex.

[0028] Detailed parameters of each module Distribution box: The selected distribution box is a floor-standing type XL-21 with a rated current of 250A and a built-in DZ47 series circuit breaker with a protection setting of 100A. Power conversion unit: Surge suppression & filtering module: Model SPD-20kA, rated operating voltage AC220V, surge suppression capability 20kA (8 / 20μs waveform), insertion loss ≤0.5dB; AC-DC converter module: Model AC-DC-24V-500W, input AC220V±10%, output DC24V / 20.8A, conversion efficiency 93%; UPS emergency battery: Model UPS-100Ah, rated voltage 24V, capacity 100Ah, can maintain the system's emergency lighting for 90 minutes when the mains power is interrupted; Laser source unit: Centralized lighting multi-node central control unit: adopts STM32F407ZGT6 main control chip, integrates RJ45 Ethernet interface (transmission rate 100Mbps), and supports independent control of 16 laser drive units; Laser driver unit: Model DRV-LASER-10A, input DC24V, output current 0-10A, current stability ±0.3%, supports overcurrent protection (threshold 11A). Laser: Model L450P20, output wavelength 450nm, single channel power 20W, 16 channels in total, total output power 320W; Air / water cooling heat dissipation control unit: model TC-600, with built-in NTC temperature sensor (temperature measurement range -20℃~100℃), axial fan speed 2000rpm, water chiller rated cooling capacity 600W, the fan starts when the laser temperature is ≥50℃, and the water chiller starts when the laser temperature is ≥60℃. Central control panel: It features a 15-inch touchscreen display, an i5 processor and 8GB of memory, built-in system monitoring software that can display the temperature, power and UPS power of each laser, and supports remote dimming (0-100% power adjustment). Fiber optic transmission link: Uses multimode silica fiber with a core diameter of 200μm and a numerical aperture of 0.22. Each laser corresponds to one fiber, with a length of 20-50m depending on the floor distribution. The transmission loss is 0.15dB / km, and the interface is FC / APC. Diverse lighting terminals: Downlights: Model LD-T-20W, with built-in YAG fluorescent ceramic with a diameter of 15mm, output color temperature of 5000K, luminous flux of 1600lm, and a total of 128 lights (12-14 lights per layer). Emergency indicator lights: Model LD-E-5W, with built-in green emergency evacuation signs, fluorescent ceramic output color temperature of 4500K, luminous flux of 400lm, a total of 32 lights (3-4 lights per floor).

[0029] Work process The mains power is connected to the power conversion unit through the distribution box. The surge protection and filtering module suppresses surges and interference in the power grid. The AC-DC module converts AC220V to DC24V to power the laser light source unit and charge the UPS battery at the same time. The central control console sends instructions to the central control unit of the multi-node centralized lighting via Ethernet. The central control unit schedules 16 laser drive units to output 8A current, and the 16 lasers simultaneously output 16W of 450nm blue laser light. The laser is transmitted to the lighting terminals on each floor via optical fiber. The fluorescent ceramic converts the blue light into white light, and the downlights provide daily lighting while the emergency indicator lights are in standby mode (1W power). A temperature sensor monitors the laser temperature in real time. When the temperature rises to 52°C, the central control unit starts the axial flow fan and shuts off the fan when the temperature drops to 45°C. If the mains power is interrupted, the UPS emergency battery will automatically switch to power supply, the central control unit will adjust the laser power to 5W, and the emergency indicator light will switch to full power output to ensure personnel evacuation lighting. The central control panel displays the temperature (e.g., 48℃), power (16W), and remaining UPS power (95%) of each laser in real time. When the temperature of a certain laser is abnormal (e.g., 70℃), the system automatically cuts off the drive current of that laser and issues an alarm.

[0030] Example 2: High-rise residential building adaptation system This embodiment is adapted to the lighting needs of a 30-story high-rise residential building, and the system parameters are adjusted accordingly.

[0031] Module parameter adjustment Laser light source unit: Equipped with 32 laser drive units and 32 20W lasers, with a total output power of 640W, adapting to the lighting needs of more floors; Fiber optic transmission link: The fiber length is adjusted to 50-100m, and low-loss multimode silica fiber is used (transmission loss 0.12dB / km). Lighting terminals: The number of downlights has been adjusted to 256 (8-9 per floor), and the number of emergency indicator lights has been adjusted to 64 (2 per floor). UPS emergency battery: capacity increased to 200Ah, emergency lighting duration extended to 180 minutes, suitable for long-term evacuation needs of high-rise buildings.

[0032] Work characteristics The centralized control unit automatically adjusts the laser output according to the residential building's time-of-use lighting needs (such as dimming the public area to 50% power during the day), further reducing energy consumption; at the same time, the optical fiber is laid in flame-retardant conduit, which meets the fire protection requirements of the building.

[0033] Example 3 Emergency Lighting Enhancement System This embodiment is designed for scenarios with high requirements for emergency lighting, such as hospitals and large shopping malls, and enhances emergency functions.

[0034] Module parameter adjustment UPS emergency battery: 300Ah capacity, emergency lighting duration 270 minutes; Emergency indicator light: Added audible and visual alarm function, which will sound a buzzer (volume 80dB) when the mains power is interrupted. Centralized control unit: Adds emergency lighting circuit priority scheduling function, and prioritizes the full power output of lighting terminals in evacuation routes and stairwells when the mains power is interrupted.

[0035] Comparative examples and effect verification To verify the advantages of the present invention, the following three sets of comparative examples are provided: Compare with Example 1: Traditional Distributed LED Building Lighting System It uses direct AC220V mains power, with each LED light independently wired and controlled by distributed switches, lacking centralized monitoring and emergency power. Disadvantages: Electrical wiring length reaches 8000 meters, increasing construction costs by 300%; there is a risk of fire caused by electrical short circuits; troubleshooting requires checking each floor individually, taking at least 2 hours; lighting immediately fails when mains power is interrupted.

[0036] Compare with Example 2: Laser lighting system without centralized temperature control No air / water cooling control unit; the laser dissipates heat naturally. Drawbacks: The laser's operating temperature remains consistently between 70-80℃, reducing its lifespan to only 40% of the design value; high temperatures cause a 15% decrease in laser power, resulting in unstable lighting effects.

[0037] Compare with Example 3: Laser lighting system without UPS The system lacks an emergency battery module, causing it to shut down during a power outage. Defect: It fails to meet mandatory building emergency lighting standards, posing a safety hazard during evacuation in emergencies.

[0038] Effect Comparison Compared with the comparative example, the system of the present invention has significant advantages in terms of electrical safety, maintenance efficiency, emergency reliability, and device lifespan. Specific data are shown in Table 1: index This invention system Compare with Example 1 Compare with Example 2 Compare with Example 3 Electrical fire risk 0 High (0.5 times per year) (Line risk) (Line risk) Troubleshooting time ≤5 minutes ≥2 hours ≥1 hour ≥1 hour Emergency lighting duration ≥90 minutes 0 0 0 Laser lifespan 50,000 hours - 20,000 hours 50,000 hours The high-security centralized fiber optic transmission laser building lighting system of the present invention uses existing industrial-grade components (such as STM32 main control chips, standard optical fibers, commercial lasers, etc.) for all modules, which can be directly purchased and assembled in batches, adapting to the lighting needs of different types of buildings, and has the conditions for large-scale industrial application.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-security centralized fiber optic transmission laser building lighting system, characterized in that, include: The distribution box is used to connect to the mains power supply and supply power to the system; The power conversion unit, connected to the distribution box, includes a surge protection and filtering module, an AC-DC power conversion module, and a UPS emergency battery module, used to achieve safe filtering, AC-DC conversion, and emergency energy storage of electrical energy; The laser source unit, connected to the power conversion unit, includes a centralized lighting multi-node central control unit, at least one laser drive unit, a corresponding number of lasers, and a wind / water cooling heat dissipation control unit, used to output laser energy and realize centralized scheduling and temperature control. The central control console is connected to the centralized lighting multi-node central control unit of the laser light source unit via an Ethernet switch for remotely controlling the system's operating status. An optical fiber transmission link is connected to the output end of the laser for transmitting laser energy; A variety of lighting terminals are connected to the output end of the optical fiber transmission link and have an integrated fluorescent ceramic component for converting laser light into white light illumination, including emergency indicator lights and downlight head types. In this system, electrical power transmission only exists in the sections from the distribution box to the power conversion unit and from the power conversion unit to the laser light source unit. The lighting terminal has no electrical wiring and optical power transmission is achieved through optical fiber.

2. The high-security centralized fiber optic transmission laser building lighting system according to claim 1, characterized in that: The surge protection and filtering module has a rated operating voltage of AC220V±10%, a surge suppression capability of ≥20kA, and a filtering bandwidth of 50Hz±2Hz.

3. The high-security centralized fiber optic transmission laser building lighting system according to claim 1, characterized in that: The centralized lighting multi-node central control unit has a built-in STM32F4 series main control chip, supports independent scheduling of at least 8 laser drive units, and has an RJ45 Ethernet interface with a transmission rate of ≥100Mbps.

4. The high-security centralized fiber optic transmission laser building lighting system according to claim 1, characterized in that: The output current range of the laser drive unit is 0-10A, the current stability is ≤±0.5%, and it supports PWM dimming and overcurrent protection functions.

5. The high-security centralized fiber optic transmission laser building lighting system according to claim 1, characterized in that: The air / water cooling heat dissipation control unit includes a temperature sensor, an axial fan, and a water chiller. The axial fan is activated when the laser temperature is ≥50℃, and the water chiller is activated when the temperature is ≥60℃. The temperature control accuracy is ≤±2℃.

6. The high-security centralized fiber optic transmission laser building lighting system according to claim 1, characterized in that: The optical fiber transmission link is a multimode silica fiber with a core diameter of 150-200μm, a numerical aperture of 0.20-0.22, a transmission loss of ≤0.2dB / km, and FC / APC type interfaces at both ends.

7. The high-security centralized fiber optic transmission laser building lighting system according to claim 1, characterized in that: The fluorescent ceramic component of the diversified lighting terminal is a YAG-based Ce-doped component. 3+ The fluorescent ceramic can convert 445-455nm blue laser light into white light with a color temperature of 4500-5500K, with a light conversion efficiency of ≥80%.

8. The high-security centralized fiber optic transmission laser building lighting system according to claim 1, characterized in that: The central control unit includes a touch screen and a control host, which can display the working status of each laser, temperature data and UPS remaining power in real time, and supports remote switching and dimming operations.

9. The high-security centralized fiber optic transmission laser building lighting system according to claim 1, characterized in that: The rated capacity of the UPS emergency battery module is ≥100Ah, which can maintain the system's emergency lighting output for at least 90 minutes when the mains power is interrupted.

10. The high-security centralized fiber optic transmission laser building lighting system according to claim 1, characterized in that: The AC-DC power conversion module has an input voltage of AC220V, an output voltage of DC24V, a rated output power of ≥500W, and a conversion efficiency of ≥92%.

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