Bulb Lighting Device Integrating Radar Motion Detector
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Solution Overview
Problem
Conventional motion sensors, such as PIR and radar systems, are limited in detecting stationary objects, are sensitive to heat interference, and require wiring, making them unsuitable for widespread home use, especially for elderly individuals who may fall without detection.
Innovation Solution
A bulb lighting device integrating a radar motion detector within a conventional light bulb design, utilizing ZigBee wireless communication for remote monitoring, allowing for wireless operation and concealment of the sensor, which can switch between wireless and wired communication modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If PIR sensors are used for motion detection, then motion can be detected, but they cannot detect stationary objects and are sensitive to heat interference from light bulbs
Solution Approach 1:
The patent extracts the motion detection function from the lighting device by using a separate PIR sensor positioned away from the light bulb, eliminating the harmful thermal interference while maintaining motion detection capability. The sensor is placed in a location where it can detect motion without being exposed to the light bulb's heat radiation.
Solution Approach 2:
The patent introduces an intermediary mechanism (the transparent envelope and strategic sensor positioning) that allows motion detection to occur without direct exposure to the light bulb's thermal radiation. The sensor detects motion through the envelope while being thermally isolated from the bulb.
2Reliability
If radar sensors are used for motion detection, then they can detect through obstacles and are not sensitive to heat, but they require wiring which increases device complexity
Solution Approach 1:
The patent replaces the radar-based mechanical/electromagnetic system with a simpler PIR sensor system that achieves the same motion detection function without requiring complex wiring or electromagnetic transmission components. This substitution simplifies the device while maintaining effectiveness.
3Ease of operation
If motion sensors are integrated into light bulbs, then wireless operation is possible, but the sensors become visible which may cause discomfort to elderly users
Solution Approach 1:
The patent extracts the PIR sensor from the visible interior of the light bulb and positions it externally or in a concealed location, allowing the light bulb envelope to remain opaque or translucent without exposing the sensor. This maintains the aesthetic appearance while enabling wireless motion detection functionality.
Solution Approach 2:
The patent applies different properties to different parts of the device: the envelope remains opaque or translucent for aesthetic purposes, while the sensor is positioned in a location that provides sufficient motion detection capability without being visible to users.
4Device complexity
If the light bulb envelope is opaque, then it provides aesthetic appearance, but it blocks infrared sensors from detecting motion
Solution Approach 1:
The patent extracts the infrared sensor from the interior of the opaque envelope and positions it externally or creates a concealed detection zone, allowing the envelope to remain aesthetically pleasing while the sensor detects motion in the surrounding area without requiring optical transparency.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution provides a discreet and wireless motion detection system capable of wide-angle monitoring without additional wiring, ensuring continuous operation and minimizing visibility, thus addressing the limitations of existing technologies.
Implementation Method 1
Radar technology is another option to detect motion in a home environment. The radar can 'see' through the lamp shield, is not sensitive to radiated heat, can see through thin objects such as curtains etc.
Implementation Method 2
The term 'radar' is generally understood to mean a method by means of which short electromagnetic waves are used to detect distant objects and determine their location and movement.
Implementation Method 3
a wireless unit for wireless communication through the air with a wireless remote station
Implementation Method 4
a power line unit for wired communication through the base and a power line mains network with a wired remote station
Implementation Method 5
an LED module having LED light sources in an LED array together with an electric driving LED controller arranged inside an at least partially transparent envelope
Data Source
AI summary
A bulb lighting device is provided. The bulb device comprises a base, a driving electronics unit comprising a power supply electrically connected to the base and a battery connected to the power supply through a battery management unit, and a communication unit comprising a communication interface and at least one of a wireless unit and a power line unit, wherein the communication unit is electrically connected to the driving electronics unit. The bulb device further comprises an LED module having LED flight sources in an LED array together with an electric driving LED controller arranged inside an at least partially transparent envelope, wherein the LED module is electrically connected to the driving electronics unit, and a motion detector arranged inside the envelope and electrically connected to the driving electronics unit, wherein an output signal of the motion detector is forwarded outside of the bulb lighting device through the communication unit.