Sensor-Controlled LEDs for Smart Illumination
Modern LED lighting installations consume significant power—up to 20% of a building's energy usage—while often providing more illumination than needed. Field measurements show that spaces are frequently over-lit by 30-50% during occupied hours, with lights remaining at full intensity even when natural daylight is sufficient or areas are vacant.
The core challenge lies in dynamically matching artificial lighting levels to actual needs while maintaining occupant comfort and system reliability across diverse environments.
This page brings together solutions from recent research—including occupancy-based control systems, ambient light sensing, integrated fixture designs that combine lighting with other building systems, and intelligent horticultural lighting solutions. These and other approaches demonstrate how sensor-controlled LED systems can dramatically reduce energy consumption while providing appropriate illumination levels for specific tasks and conditions.
1. LED Lighting Device with Visible and Near-Infrared Sensors for Adaptive Brightness Control
ONYOU TECH CO LTD, 2023
LED lighting device that adjusts brightness based on daylight and indoor illuminance to save power. The device has visible light and near-infrared sensors, motion sensor, and a dimming control unit. It measures visible light, near-infrared, and motion. If corrected illuminance (diff between visible/near-IR) is high, dims. If corrected low, brightens. If max output with low near-IR, resets threshold. This balances day/night lighting needs.
2. LED Lamp with Ambient Light and Presence Detection Featuring Multi-Module Control System
SHENGSI SENXING ELECTRICAL APPLIANCE MANUFACTURING CO LTD, SHENGSI SENXING ELECTRICAL APPLIANCE MFG CO LTD, 2023
Intelligent LED lamp that adjusts brightness based on ambient light and presence detection to save energy. The lamp has a power supply, photosensitive module, power adjustment module, driving control module, sensing control module, and LED module control module. The photosensitive module detects light and the power adjustment module increases brightness in low light. The sensing module detects presence and turns off the lamp when alone. The driving control module regulates LED current. This allows the lamp to dim in bright light, conserve power when alone, and adjust brightness based on photosensing.
3. LED Light Source Device with Alternating Warm and Cold White LED Holders and Ambient Light-Responsive Brightness Adjustment
JIANGSU HANGJIN PHOTOELECTRIC TECH CO LTD, JIANGSU HANGJIN PHOTOELECTRIC TECHNOLOGY CO LTD, 2023
LED light source device that adjusts brightness based on ambient light to improve energy efficiency and reduce heat generation. The device has separate warm and cold white LED holders arranged alternately in groups. An ambient light sensor is mounted on the housing. It uses a separate wiring board for cold and warm white LEDs connected to the housing base. This allows flexible control of the relative brightness of warm and cold LEDs based on ambient light.
4. LED Lamp Bead with Ambient Light-Responsive Brightness Adjustment System
GUANGZHOU LINUO ELECTRONIC TECH CO LTD, GUANGZHOU LINUO ELECTRONIC TECHNOLOGY CO LTD, 2023
Energy-saving LED lamp bead that adjusts brightness based on ambient light. The lamp has an LED bead, fixed box, control box, sensor module, current control module, control panel, and transmission module. The sensor detects ambient light and sends signal to the control panel. The panel adjusts current through the control module to the LED bead based on the sensor signal. This allows the lamp to dynamically adjust brightness based on ambient light, preventing overillumination and power waste when fixed brightness lamps are too bright.
5. LED Lighting Control System with Sensor-Based Automatic Brightness and Switching Adjustment
SHENZHEN CITYGHOST TECH LTD, SHENZHEN CITYGHOST TECHNOLOGY LTD, 2023
Intelligent LED lighting control system that automatically adjusts brightness and switches LEDs based on outdoor light levels and indoor occupancy. The system uses sensors to detect natural light intensity and indoor activity. When outdoor light is sufficient, it turns off indoor LEDs. If light is low or no one is present, it turns off LEDs. As outdoor light decreases, it increases indoor LED brightness. This ensures optimal lighting based on environment conditions and saves power when natural light is sufficient.
6. LED Lamp Group with Sensor-Driven Multi-Mode Control System and PLC Integration
COLOR FANTASY TECH SHENZHEN CO LTD, COLOR FANTASY TECHNOLOGY CO LTD, 2023
Adjustable multi-mode intelligent control LED lamp group that can automatically adjust lighting based on environmental conditions and user presence. The lamp has a control mechanism with sensors like light, motion, temperature, and a timer connected to a PLC controller. The sensors provide data to the controller which then controls the LED lamp assembly through relays. This allows features like turning on when light is low, turning off when motion stops, adjusting brightness with light level, and scheduled timers.
7. LED Light Box with Detachable Strips and Proximity Sensor-Controlled Dimming Mechanism
SHENZHEN SHENGRUIXIN MICROELECTRONIC CO LTD, 2022
LED light box with energy-saving control to reduce power consumption and waste. The light box has detachable LED strips and a sensor between them. When the sensor detects people nearby, it signals the power supply to reduce output. This dims the lights and reduces heat. The power supply uses an AC-DC converter with active power factor correction to efficiently convert mains power to the LED supply voltage.
8. LED Lighting Device with Adaptive Brightness Control Using Visible Light and Near-Infrared Sensors
ONYOU TECH CO LTD, 2022
LED lighting device that adjusts brightness based on room light levels and external light conditions to maintain consistent illuminance while reducing power consumption. The device has visible light and near-infrared sensors. It dims if indoor light + outdoor light exceeds a threshold, and brightens if indoor light is low. The thresholds adapt based on initial measurements in a dark room. This allows optimized lighting with natural light variability.
9. LED Module with Integrated Ambient Light Sensing and Automatic Dimming Control
TRIDONIC GMBH & CO KG, 2022
LED module that can automatically dim based on local ambient light. The module has an LED for emitting light and another LED for sensing ambient light. A control unit adjusts the main LED's brightness based on the sensed light level. Using a separate sensing LED avoids interference from the main LED's output. This allows precise local dimming without needing separate ambient light sensors in the room.
10. Lighting System with Autonomous Brightness Adjustment Using Occupancy and Ambient Light Sensors
OSRAM SYLVANIA Inc., 2022
Intelligent variable lighting systems enhance efficiency and customization by using occupancy and ambient light sensors to autonomously adjust LED brightness. These systems dim the lights when no one is present and brighten them when occupied. Adjustable transition delays optimize energy savings while avoiding abrupt lighting changes. Additionally, the systems can be remotely managed to set specific dimming levels and delays, offering greater control and flexibility.
11. LED Lighting System with Optical Sensor-Controlled PWM and Wireless Communication Module
JANG YOO JIN, 2022
LED lighting system that improves efficiency, maintains brightness, and extends LED life by using an optical sensor to control PWM (pulse width modulation) and wireless communication. The system has an optical sensor to detect light, a controller that adjusts PWM duty based on input, an LED driver, and a Bluetooth module. The controller uses an auto calibration method to optimize PWM for initial brightness and gradually increases duty if light drops below standard. This maintains consistent brightness. The Bluetooth allows remote control and alerts for LED replacement time.
12. LED Lamp System with Environmental Sensors and Solar-Powered Adaptive Dimming
SHENZHEN GUANTAI INDUSTRIAL LIMITED CO, SHENZHEN GUANTAI INDUSTRIAL LTD CO, 2022
Intelligent energy-saving LED lamp group system with solar power that adjusts lighting based on environmental conditions. The system uses sensors to detect light, motion, and noise, and a microcontroller to automatically dim the LEDs when ambient light is sufficient, saving power. Solar panels charge a battery to provide backup power when needed. The LED panels have sensors at both ends to monitor conditions and dimmers to adjust brightness. The system allows energy-efficient, automated lighting that adapts to surroundings.
13. LED Lighting Control System with Pyroelectric Sensors and MOSFET-Based Dimmer for Occupancy and Ambient Light Detection
Universitas Telkom, 2022
Automatic control system for LED lighting that adjusts light intensity based on room occupancy and external light levels to improve energy efficiency. The system uses pyroelectric sensors and fresnel lenses to detect people and external light, and a dimmer circuit with MOSFET to adjust LED brightness accordingly. This avoids unnecessary lighting when rooms are empty or well-lit from outside.
14. Lighting Fixture with Sensor Incorporating Duty Cycle Control and Sound-Responsive Detection Frequency Adjustment
NINGBO SHARKWARD ELECTRONICS CO LTD, 2021
A lighting fixture with sensor that reduces the impact of LED brightness on sensor readings. The fixture has a sensor with a light intensity detection module, CPU, power processing module, and human body sensing module. The CPU controls power duty cycle based on detected brightness. A brightness table maps duty cycles to levels. The CPU reduces detection frequency based on sound volume. If duty reaches a limit, it stops increasing. The CPU also adjusts duty based on time difference between head and tail signals in sounds. This allows accurate ambient brightness detection between LED on/off cycles.
15. LED Lighting Device with Presence and Ambient Light Sensors for Dynamic Brightness Control
SHENZHEN LONGYUN LIGHTING ELECTRIC APPLIANCES CO LTD, 2021
An LED lighting device that intelligently adjusts brightness based on presence and ambient light to save power. The device has a sensor to detect when a target enters a specific area. If the target is present and ambient light is low, it sends a dimming signal to the LED driver. If no target is present, it sends a dimming signal after a delay. The driver then adjusts the LED brightness accordingly. This avoids wasting power when no one is there and low light conditions. The device also has backup power from a battery charged by the main supply.
16. Smart LED Power Supply with Adaptive Dimming Using Integrated Sensors and Wireless Module
ZHEJIANG KLITE LIGHTING HOLDINGS CO LTD, 2021
A smart LED power supply that can adaptively dim the LED lights based on factors like ambient light, presence of people, and motion. The power supply has a PFC module, dimming module, wireless receiver, and sensors like pyroelectric, light, and radar. The sensors collect signals representing human presence, light level, and motion. The wireless module receives these signals and sends a dimming PWM signal to the dimming module. This allows automatic adjustment of brightness based on environment and presence detection.
17. LED Lighting Device with Dual Output Control Utilizing Human Presence Detection and Light Level Sensing
Smartech Co., Ltd., Lee Yeon-su, 2021
LED lighting device with dual output control based on human presence and light level sensing. The device has both human body detection and light sensing capabilities. When motion is detected, it illuminates at a normal output. But if light levels fall below a threshold, it reduces the output to a minimum level. This provides crime prevention by maintaining some light in low-illuminance areas. By using digital amplifiers and microcontrollers instead of analog circuits, the device simplifies components, improves reliability, and blocks side light interference for better sensor performance.
18. Integrated Fixture with LEDs and Communication Apparatus for Unified Lighting and Communication
Lumisys, Inc., 2021
Integrating smart lighting with building communication systems (e.g., sound systems, cameras) to provide lighting and communication in a unified fixture for simplifying installation and reducing costs compared to separate lighting and communication systems. The fixture contains LEDs, a communication apparatus (e.g., microphone, camera), and a controller. The controller receives signals from the communication apparatus to control the LEDs and provide lighting based on detected presence or other conditions. The fixture can be easily connected to a standard light fixture socket for retrofitting buildings.
19. LED Lamp with Ambient Light-Responsive Brightness Adjustment Mechanism
LI XIAOFENG, 2021
LED lamp that maintains stable indoor lighting by automatically adjusting the brightness based on ambient light levels. The lamp has a main controller, light sensor, power supply, and LED driving circuit. The sensor detects indoor brightness and sends data to the controller. The controller adjusts the LED brightness accordingly to compensate for changes in ambient light. This keeps the overall indoor lighting level consistent as the natural light varies.
20. Lighting Fixture with Individually Controllable Discrete Light Sources and Integrated Environmental Analysis System
Yechezkal Evan Spero, 2021
Lighting fixtures use multiple discrete light sources that can be individually controlled to provide tailored lighting. The fixture has separate light sources, optics, and power control for each source, allowing precise adjustment of color, intensity, and direction. Cameras or sensors can analyze the environment or specific tasks, and software can optimize the lighting accordingly by controlling each source independently.
21. LED Luminaire with Adaptive Sensor-Controlled Brightness and Environmental Calibration
LEE SEUNG HEE, LEUKOSLITE CO LTD, THE HILL ENC CO LTD, 2020
Intelligent LED luminaire equipped with sensors that accurately detects presence/absence of humans to adjust brightness, prevents sensor malfunctions due to temperature, wind, etc., and lowers standby power. The luminaire has sensors for human body, light, and temperature. It dims and linearly fades LED brightness when no humans are detected. It rapidly fades and maintains brightness when humans return. The sensors can be remotely adjusted for environment, brightness range, and fade speed. This allows optimized luminaire performance based on surroundings and reduces waste compared to fixed settings.
22. LED Lighting System with Integrated Occupancy Sensors for Automated Environmental Control
ILUMISYS INC, 2020
LED-based lighting system for smart buildings that can automatically control environmental conditions like temperature and lighting based on occupancy. The system uses LED lights with sensors that detect if a room is occupied. When the room is unoccupied, the lights dim and the HVAC system adjusts temperature. This saves energy when rooms are empty. When occupied, the lights brighten and the HVAC system maintains set temperature. The system is compatible with standard light fixtures and building systems for easy installation.
23. Magnetically Attachable Outdoor Solar Light with Microwave Motion Sensors and Inductive Charging
IDEAPOND LLC, 2020
Outdoor solar light that can be attached to outdoor fixtures like umbrellas or tents, to provide illumination at night. The light has a rechargeable battery powered by solar panels. It also uses microwave motion sensors to adjust light output based on nearby movement. The light attaches magnetically without screws. It uses inductive charging to recharge the battery wirelessly through the glass. The sensors and intelligent controls help reduce power usage.
24. LED Brightness Control System with Ambient Light Sensor and Gradual Output Adjustment
LEEDARSON LIGHTING CO LTD, 2020
A system to smoothly control the brightness of LED lights to prevent eye strain and discomfort when the lights are turned on. The system uses a light sensor to detect ambient light levels and a controller to adjust the LED light output based on the sensor readings. This gradual brightness ramping instead of instant maximum output helps prevent eye dazzle when the lights are first turned on.
25. Lighting Control System with Wireless Communication Gateway and Integrated Sensor Feedback
Fluence Bioengineering, Inc., 2020
Lighting control system for horticulture applications that allows users to remotely monitor and control lighting schedules and levels for multiple fixtures while also receiving real-time environmental sensor data. The system uses a control gateway device that wirelessly communicates with the control server, lighting modules, and sensor modules. This enables remote control of dimming and scheduling based on sensor inputs like temperature and light levels.
26. Networked LED Lighting System with Occupancy and Ambient Light Sensing for Adjustable Illumination
Digital Lumens, Inc., 2020
Intelligent LED lighting systems that provide efficient, adjustable illumination in response to occupancy and ambient light, while saving energy. The systems have occupancy and ambient light sensors that control LED lighting levels. When occupancy is detected, lighting is set to a lower level than when the space is unoccupied. The systems also use light sensors to adjust brightness based on natural light levels. This prevents over-illumination. The sensors and LED lights are networked for remote monitoring and control.
27. Intelligent Lighting System with Automatic LED Deactivation via Light Sensor-Controlled MOS Switch
ANHUI LETU ELECTRONIC TECH CO LTD, 2020
Intelligent lighting system that can automatically turn off LED lights when sufficient natural light is present to save energy. The system uses a control center, LED driver, MOS switch, LED lights, and light sensor. The LEDs are connected to the control center through the MOS switch. The control center detects natural light level using the sensor and turns off the MOS switch when sufficient light is detected. This prevents unnecessary LED use when natural light is adequate.
28. Gateway-Integrated Wireless Control System for LED Lighting with Real-Time Sensor Communication
Fluence Bioengineering, 2020
Wirelessly controlling and monitoring LED lighting for horticulture systems using a gateway device that communicates with a server and lighting and sensor modules. The gateway allows remote control of light dimming and scheduling based on real-time sensor data from the environment.
29. Integrated Building Fixture with Combined Lighting, Audio/Video Capture, and Communication Functions
iLumisys, Inc., 2020
An integrated lighting and communications system for building fixtures that combines lighting, sound and video capture, and communication capabilities into a single fixture. The fixture includes sensors to monitor the space, a controller to process sensor data, and communication devices to transmit information. The integrated fixture can replace standard lighting fixtures to provide illumination while also capturing audio/video and monitoring occupancy. This enables improved building management and efficiency by integrating multiple systems into one fixture.
30. LED Lighting System with Sensor-Based Brightness Adjustment and Spectrum Analysis
Shenzhen Sunshine Laser & Electronics Co., Ltd., SHENZHEN UP-SHINE LIGHTING CO LTD, 2020
LED lighting system that intelligently adjusts brightness to save energy while maintaining proper lighting levels. The system uses sensors to detect natural light levels and spectrum near each LED lamp group. A control unit calculates the natural light brightness near each group based on the detected spectrum and distances between groups. This allows accurate determination of natural light levels without interference from other lamps. The control unit then adjusts lamp brightness based on natural light vs artificial light comparison. This prevents over-compensation for low natural light and prevents wasting energy in daylight.
31. LED Lighting Control System with Sensor-Based Brightness and Angle Adjustment Mechanism
ZHEJIANG KUNTENG INTELLIGENT TECH CO LTD, ZHEJIANG KUNTENG INTELLIGENT TECHNOLOGY CO LTD, 2020
LED lighting control system for adjusting brightness and angle of multiple LED lights based on environment conditions. The system has a lighting module with multiple LED sources, a circuit module to pulse-width modulate the lights, and a control module with sensors. The sensors detect brightness and human activity in the illuminated area. When people enter, the brightness sensor is delayed to avoid turning on unnecessarily. If brightness is low, it increases lighting and turns on remaining sources. If brightness is high, it reduces lighting. If no people, it turns off lights. A rotatable lighting base allows moving lights to balance brightness across areas with varying illumination.
32. LED Lighting Circuit with Ambient Light Sensing and Synchronized Strobing Mechanism
SHENZHEN SENDIS SEMICONDUCTOR CO LTD, 2020
LED lighting circuit that automatically adjusts brightness based on ambient light without interference from the LED itself. The circuit uses a separate light sensor that is turned off when the LED is off and on when the LED is on. This prevents the LED light from interfering with the sensor. The sensor outputs a signal to adjust the LED brightness. This allows the LED to strobe faster than mains frequency to reduce eye strain. The strobing is synchronized with the mains to avoid interference.
33. Lighting Control System with Sensor-Driven Dynamic Adjustment of Duty Cycle and Intensity
Beijing University of Civil Engineering and Architecture, BEIJING UNIVERSITY OF CIVIL ENGINEERING AND ARCHITECTURE, 2020
Energy-saving lighting control method and system that intelligently adjusts lighting based on environment and occupancy. The system has sensors for light and occupancy, a control unit, and LED lamp drivers. The control unit receives sensor data and sets lighting parameters like duty cycle and intensity based on environment and occupancy. This allows dynamic, intelligent lighting adjustment instead of fixed dimming.
34. LED Lighting System with Ambient Light-Responsive Brightness Adjustment via Voltage Conversion
QUZHOU COLLEGE OF TECHNOLOGY, QUZHOU COLLEGE TECHNOLOGY, 2020
LED lighting system that automatically adjusts brightness based on ambient light to provide constant illumination levels while saving energy and improving comfort. The system uses an illuminance sensor to measure light intensity, a voltage converter to change the sensor output proportional to light, and an LED driver that adjusts brightness based on the converted voltage. This allows the LEDs to dynamically dim or brighten in response to ambient light without complex control electronics.
35. LED Lighting Fixture with Integrated Presence Detection, Sound Sensing, and Image Capturing Capabilities
iLumisys, Inc., 2020
Integrating LED lighting with communication features like presence detection, sound sensing, and image capturing to enable building automation and monitoring using existing light fixtures. The lighting fixtures contain communication hardware like microphones, cameras, and sensors that can detect presence, sound, and images in the area. This data is then used to control the lighting and provide additional functionality like security monitoring using the existing light fixture infrastructure.
36. Multi-Sensor LED Lighting System with Automatic Power Adjustment Based on External Light and Flow Detection
JIANGSU LIGEN ELECTRIC POWER ELECTRONIC TECH CO LTD, JIANGSU LIGEN ELECTRIC POWER ELECTRONIC TECHNOLOGY CO LTD, 2020
A multi-sensor based LED smart lighting system that automatically adjusts the output power of LED lamps based on external light intensity and people/vehicle flow. This balances energy conservation and lighting needs. The system includes components like a power supply, flyback circuit, driver chip, dimming circuit, light intensity sensor, and flow sensor.
37. LED Lighting System with Sensor-Driven Brightness Adjustment and Remote Parameter Configuration
Digital Lumens, Inc., 2019
Intelligent LED-based lighting systems that provide energy-efficient, adjustable illumination in response to occupancy and ambient light levels. The systems use occupancy sensors and ambient light sensors to detect occupants and lighting levels. A controller adjusts the LED brightness based on the sensors. It transitions between bright and dim states when occupants arrive or leave. The transition delay allows temporary absence before dimming. The brightness levels, transition delay, and other parameters can be remotely adjusted. Central control can also manage lighting based on demand and alternative energy availability.
38. LED Strip with Induction Sensor, Integrated Voltage Stabilizer, and Dimmable Control Module
GUANGZHOU LEDIA LIGHTING CO LTD, 2019
A power-saving LED strip with induction sensing that can automatically turn off when not in use. The strip has an input end plug, a controller module, and an LED board with an LED module. The controller has a main controller and an induction sensor. The input plug has a voltage stabilizer. The LED module has MOSFETs and diodes. The main controller can dim the LEDs based on sensor input. The voltage stabilizer steps down input voltage to 3.3V for the controller and sensor. When light is sensed, the controller dims brighter.
39. Integrated LED Lighting Control System with AC Zero-Crossing Ambient Light Detection
SHANGHAI SINO SAGE INTELLIGENT TECH CO LTD, SHANGHAI SINO-SAGE INTELLIGENT TECHNOLOGY CO LTD, 2019
Hidden integrated intelligent lighting control system that allows LED lights to automatically adjust brightness based on ambient light without requiring external light sensors or flashing lights. The system uses an AC zero-crossing detector to turn off the LEDs when mains power crosses zero. During that time, an onboard light sensor detects ambient light. The control circuit then adjusts LED power based on the sensor reading. This allows LEDs to dim when ambient light is high and brighten when low without needing external sensors or flashing.
40. Indoor LED Lighting Control System with Adaptive Adjustment Using BP Neural Networks and Particle Swarm Optimization
FUJIAN UNIVERSITY OF TECHNOLOGY, UNIV FUJIAN TECHNOLOGY, 2019
Indoor LED lighting control system that uses adaptive light adjustment to automatically optimize lighting levels based on factors like environment, occupancy, and natural light. The system has LED lights, sensors for light, illuminance, and infrared, a control unit, and a mobile app. It uses BP neural networks and particle swarm optimization to predict and adjust lighting based on historical data. The lights turn on to a preset level, then adjust based on real-time illuminance. Infrared sensors turn off lights when empty areas. This allows smart, energy-efficient lighting without manual control.
41. LED Luminaire Control System with Dynamic Output Adjustment Based on Ambient Light Sensing
IDEAL INDUSTRIES LIGHTING LLC, 2019
LED luminaire control system that optimizes lighting efficiency and extends LED lifetime by dynamically adjusting luminaire output based on ambient light levels. The system uses optical sensors to measure light levels in an area and adjusts the LED output to maintain a target illumination. If the LED output falls below the target due to lumen depreciation, the system increases the LED output to compensate. This prevents underlit conditions as LEDs age while maximizing efficiency by only providing the necessary light.
42. LED Lamp System with Ambient Light Sensing and Bluetooth-Connected Control
Hengdian Group Debang Lighting Co., Ltd., 2019
LED lamp system that automatically adjusts light levels based on ambient light conditions. The system has an indoor LED lamp, an outdoor light sensor, and a mobile device that connects the two. The outdoor sensor collects ambient light and sends signals to the indoor lamp to synchronously dim and adjust color. This allows natural light synchronization and uniform lighting effects. The mobile device coordinates setup, configuration, and control. The sensors, lamp, and mobile connect via Bluetooth.
43. LED Lamp with Integrated Intelligent Control Circuit and Sensor-Driven Automatic Brightness Adjustment
Shenzhen Changyuntong Semiconductor Technology Co., Ltd., 2019
LED lamp with an intelligent control circuit that enables automatic brightness adjustment and reduces component count compared to conventional LED lamps. The circuit uses an LED constant current drive chip with a first transistor, second transistor, current source, sustain control, and analog logic. The LED lamp also has a light intensity sensor and an IR sensor. The drive chip provides current control for the LEDs, with the analog logic adjusting the LED current based on the intensity sensor. This allows automated brightness adjustment without electrolytic capacitors. The IR sensor can be used for other intelligent features.
44. LED Streetlight System with Microcontroller-Based Ambient Light Responsive Dimming and Surge Protection
Baiksan L&T, 2019
LED streetlight system that automatically dims the LEDs based on ambient light levels. The system has a streetlight control unit with a microcontroller and surge protection. It measures ambient light and uses a dimming algorithm to control the LED brightness. The control unit powers the LEDs via a separate DC source. This allows the LEDs to be dimmed without changing the AC supply. The system reduces energy consumption by dimming in low light and prevents overdrive in bright conditions.
45. Wireless Gateway-Integrated Remote Lighting Control System with Environmental Sensor Communication for Horticultural Applications
Fluence Bioengineering, 2019
Remote lighting control system for horticulture with wireless control gateway that enables monitoring and scheduling of lighting fixtures based on environmental sensor data. The system uses a control server wirelessly connected to a gateway and user devices. The gateway communicates with sensors and lighting modules. This allows remote real-time dimming and scheduling of overlapping lights while receiving sensor data from greenhouses or farms.
46. LED Lighting Fixture with Adaptive Dimming and Integrated Power Factor Correction
KBGLOBAL CO LTD, KB Global, 2019
Automatic dimming LED lighting fixture that can adapt illumination levels while reducing power consumption. The fixture has an LED module, rectifier, driver, sensor, and control unit. The sensor measures light in the room and calculates the difference from a reference. The control unit adjusts LED output based on the sensor readings. A transparent knob can be used to fine-tune sensitivity. The fixture also has a power factor correction converter to improve input power quality.
47. Self-Dimming LED Assembly with Integrated Ambient Light Sensor in Cylindrical Configuration
Astronics Advanced Electronic Systems Corp., 2018
A self-dimming LED system for lights like airplane reading lamps that automatically adjust brightness based on cabin ambient light. The system uses an integrated ambient light sensor that reduces LED current as surroundings darken. No external wiring or controls needed. The sensor, resistors, and LED form a compact cylindrical assembly.
48. Lighting Fixture with Integrated Communication Apparatus and Signal-Responsive Light Control
iLumisys, Inc., 2018
Integrating communication features into lighting fixtures to provide a single package that replaces a standard light bulb and provides both light and communication functions. The lighting fixture has a communication apparatus to detect presence, sound or images in the area and generate signals. A controller then uses those signals to control the light output.
49. Smart Light Bulb with Integrated Light Sensor, Detection Circuit, and Voltage Conversion for Autonomous State Switching
ZHEJIANG SHENGHUI LIGHTING CO, ZHEJIANG SHENGHUI LIGHTING CO LTD, 2018
Smart light bulb that can switch lighting states based on light detection without the need for additional switches. The light bulb has a light sensor, detection circuit, and voltage conversion circuit. The sensor detects light level changes and sends a signal to the detection circuit. The detection circuit generates a command to adjust brightness/color based on the sensor signal. The conversion circuit then adjusts the light bulb's brightness/color accordingly. This allows the bulb to switch states based on light changes without external switches. A control switch is optionally added to trigger longer light level changes that are ignored by the detection circuit.
50. LED Lighting Control System with Body Heat and Light Level Sensors for Automatic Occupancy and Ambient Light Detection
Li Shaochun, 2018
An LED lighting control system for offices that uses body heat sensors and light level sensors to automatically turn lights on and off based on occupancy and light conditions. The system has multiple body heat sensors covering the office area. When all sensors detect no body heat, it turns the lights off. When a sensor detects body heat, it turns the lights on. If light level sensors detect sufficient light, it turns the lights off. This prevents unnecessary lighting when no one is present and avoids over-illumination when people are present. The system compares light levels to a set threshold.
A variety of innovative approaches for sensor-controlled LED lighting are shown in these patents. These technologies are propelling innovations in the lighting sector, ranging from autonomous lighting systems that adjust to occupancy and ambient light levels to integrated solutions that blend lighting with communication and sensor capabilities.
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