Hearing Protector Distance Alerts for Collision Warning
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Solution Overview
Problem
Existing hearing protection devices fail to reliably alert users to approaching objects or persons, risking collisions and missed important acoustic signals, and existing active devices are complex and costly.
Innovation Solution
A hearing protection device equipped with a detection unit that sends and receives signals to determine the distance to external devices, providing optical, audible, or haptic alerts when the distance falls below a predetermined threshold, enhancing collision avoidance and sound awareness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If active hearing protection devices transmit acoustic signals from the environment into the ear cup, then the wearer can hear certain sounds, but the device complexity and cost increase
Solution Approach 1:
The patent replaces the complex active electronic sound transmission system with a passive optical indication system. Instead of using microphones, amplifiers, and loudspeakers to transmit acoustic signals, the invention uses optical indicators (such as LEDs) that respond to detected sounds or distances, providing auditory warning information through visual feedback without requiring complex acoustic transmission hardware.
2Reliability
If active hearing protection devices transmit acoustic signals, then relevant sounds can be heard, but the risk of missing sounds remains and the device becomes more expensive
Solution Approach 1:
The patent introduces an intermediary optical indication system that bridges the gap between sound detection and user awareness. Instead of directly transmitting acoustic signals through complex electronics, the system uses optical indicators as intermediaries to convey information about detected sounds or approaching objects, providing reliable warning functionality at lower cost.
3Reliability
If the detection unit determines distance using signal reception, then collision prevention is improved, but the device complexity increases
Solution Approach 1:
The patent makes the detection unit multi-functional by enabling it to perform both acoustic sound detection and optical signal-based distance measurement using the same hardware components. The detection unit can operate in different modes (acoustic monitoring or optical distance measurement) depending on the situation, providing both collision prevention and sound awareness functionality without requiring separate dedicated systems for each function.
Data Source
AI summary
The present disclosure relates to a hearing protection device (10, 10′, 10″) with an indication unit (40a, 40b) and a detection unit (30, 30′, 30″) to send a first detection signal, to assign a distance value based on a second detection signal of an external device (50, 50′) representing the physical distance to the external device (50, 50′) and to control the indication unit (40a, 40b) to provide an indication to the user (100) if the assigned distance value is at or below a predetermined threshold distance value. Thus, a collision may easily and reliably be prevented by providing an indication to the user (100), so that the risk of missing relevant sound of a moving person or object is overcome. A collision warning system comprising such a hearing protection device (10, 10′, 10″) and an external device is also provided. Furthermore, a method of retrofitting a hearing protection device (10′″) with such a detection unit (30, 30′, 30″) is provided.