Grouped Wireless Lighting Control for Real-Time Shadow Checking
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Solution Overview
Problem
Conventional methods for controlling multiple lighting devices using wireless communication suffer from increased communication overhead and reduced real-time performance, especially in poor wireless environments, due to separate transmission of turn-on and turn-off instructions, which impairs the ability to quickly check shadow/shade on a subject during photography.
Innovation Solution
A lighting control device and system that allows continuous operation of lighting units with integrated turn-on/off control, utilizing a processor to manage wireless communication with multiple lighting devices, transmitting combined turn-on/off instructions based on group settings, reducing the need for separate transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate turn-on and turn-off instructions are transmitted to control LED lighting devices, then precise control of each device is achieved, but communication overhead increases and real-time performance deteriorates
Solution Approach 1:
The patent combines turn-on and turn-off instructions into a single wireless transmission packet. The control device sends one integrated instruction that contains both the turn-on command for target lighting devices and the turn-off command for non-target devices, eliminating the need for separate transmissions and reducing communication overhead while maintaining precise control.
Solution Approach 2:
The wireless instruction packet is designed to serve multiple functions simultaneously: it acts as both a turn-on instruction and a turn-off instruction depending on the device type field. This multi-functional instruction structure allows a single transmission to control multiple devices in different states, improving communication efficiency without sacrificing control precision.
2Ease of operation
If multiple wireless communications are performed to control different lighting devices, then individual device control is achieved, but real-time property significantly deteriorates in poor wireless environments
Solution Approach 1:
The patent merges multiple separate wireless communications into a single unified transmission. The control device transmits one comprehensive instruction packet that simultaneously controls multiple lighting devices, including both LED devices that should turn on and strobe devices that should turn off, thereby maintaining individual device control while dramatically improving real-time performance.
3Illumination intensity
If LED light source is used for continuous lighting instead of strobe, then shadow/shade checking is improved, but communication complexity increases due to needing both turn-on and turn-off instructions
Solution Approach 1:
The control system uses a universal instruction format that works for both LED devices (continuous lighting) and strobe devices (flash lighting). The instruction packet contains device type identification that determines how each device should respond, allowing continuous lighting control for LEDs while maintaining the same communication protocol structure, thus not increasing communication complexity.
Data Source
AI summary
A lighting control device capable of checking shadow/shade on a subject intended by a user without impairing the real-time property. The lighting control device is wirelessly connected to a plurality of lighting devices each having a light unit capable of being on continuously, and controls turning on/off of the light units of the plurality of lighting devices. The lighting control device performs wireless communication with the plurality of lighting devices generates a turn-on instruction for the light unit, and transmits, to the plurality of lighting devices by the wireless communication: the turn-on instruction; information on a group to which each of the plurality of lighting devices belongs; and turn-on group information including a setting of one of light emission permission and light emission prohibition set for the group.