projector
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Solution Overview
Problem
Current child-soothing products, such as automated mobiles and projectors, are limited in engagement and safety, as they often produce high light and sound levels unsuitable for young children, posing a risk of distress or eye damage due to their design.
Innovation Solution
A projector equipped with movement and audio sensors, a controller that adjusts output levels based on sensor signals, allowing for adaptive brightness and volume adjustments to match a child's activity and sleep state, ensuring safety and engagement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a video projector is used to engage children with high-quality visual content, then engagement and entertainment value are improved, but light output intensity becomes too high causing safety risks of eye damage and distress
Solution Approach 1:
The projector dynamically adjusts its light output intensity and sound volume based on real-time sensor feedback about the child's state. The system transitions from static high-intensity output to adaptive variable output, modifying parameters according to detected movement levels and audio signals to maintain engagement while ensuring safety
Solution Approach 2:
The system incorporates movement sensors and audio sensors that continuously monitor the child's reactions and feed this information back to the controller. This closed-loop feedback mechanism enables the projector to automatically adjust its output levels, reducing intensity when the child is calm or sleeping and increasing when the child is active and engaged
2Productivity
If the projector output level is kept high to maintain engagement, then entertainment value is improved, but the projector becomes unsafe when the child approaches or disturbs it
Solution Approach 1:
The system takes preliminary safety actions by continuously monitoring the child's proximity and behavior through sensors before harmful effects can occur. When the child approaches or disturbs the projector, the system preemptively adjusts output levels to prevent potential eye damage or distress, rather than waiting for problems to arise
Solution Approach 2:
The projector autonomously monitors its own operational environment and self-adjusts its output levels based on sensor feedback. The system serves its own safety requirements by automatically detecting when the child is nearby or disturbing it, and independently modifying its light and sound output without requiring external intervention
3Object-affected harmful factors
If the projector automatically reduces output level when the child is asleep, then safety and comfort are improved, but the system complexity increases due to added sensors and control mechanisms
Solution Approach 1:
The movement sensor and audio sensor serve multiple functions: they detect the child's presence, monitor activity levels, determine sleep states, and trigger appropriate output adjustments. By making these sensors multi-functional, the system achieves sophisticated adaptive behavior without proportionally increasing component count or complexity
Solution Approach 2:
The system automatically performs the complex task of monitoring and adjusting output levels without requiring parental intervention. The controller autonomously processes sensor data and modifies projection parameters, eliminating the need for manual control interfaces or additional parental monitoring devices
Data Source
AI summary
A projector (2) comprises an output unit (4) for delivering visual or audiovisual content; at least one movement sensor (24) or audio sensor (22); and a controller (20) in communication with the output unit (4) and the at least one sensor (22, 24). The controller (20) is configured to adjust an output level of the output unit (4) based on a signal from the at least one sensor (22, 24).