Portable Hearing Protector with Sound Sealing Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current hearing protection devices for industrial environments are ineffective in ensuring consistent use due to high sound attenuation levels making communication difficult, lack of immediate feedback on noise exposure, and inability to detect sealing issues, leading to potential overexposure to noise.
Innovation Solution
A portable personal hearing protection device with sensors to detect ambient sound power and emit alarm signals when attenuation is insufficient, featuring autophony detection and recommendation for additional protection based on sound levels, allowing for widespread use without customization and enabling employers to monitor usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high sound attenuation hearing protectors are used, then hearing protection effectiveness is improved, but communication between workers deteriorates
Solution Approach 1:
The system dynamically adjusts the attenuation level of hearing protectors based on real-time ambient noise measurements. When noise exceeds safety thresholds, the protectors provide high attenuation; when noise is low, attenuation is reduced or removed, enabling clear communication while maintaining hearing protection when needed.
Solution Approach 2:
The system changes the attenuation parameter of hearing protectors based on measured sound pressure levels. The attenuation level is not fixed but varies according to environmental noise conditions, allowing optimization between protection and communication needs.
2Loss of information
If static warning systems are used, then workers are alerted of noise hazards, but workers develop habit of not wearing protectors when not very noisy
Solution Approach 1:
The system provides real-time feedback to workers about their actual noise exposure levels and protection status. Workers receive immediate information about whether they are adequately protected, creating continuous awareness rather than static warnings, which maintains consistent protector use regardless of perceived noise levels.
Solution Approach 2:
The system monitors noise levels and provides warnings before dangerous exposure occurs. By detecting elevated noise levels and alerting workers in advance, the system prevents harmful exposure before it happens, rather than reacting after damage occurs.
3Reliability
If custom-made hearing protection systems are used, then hearing protection effectiveness is improved, but device cost increases
Solution Approach 1:
The system uses universal, off-the-shelf hearing protectors combined with a portable electronic monitoring device that can be used by any worker. This eliminates the need for expensive custom-made protectors for each individual while maintaining effective hearing protection through intelligent monitoring and adjustment.
Solution Approach 2:
The portable sensor device acts as an intermediary between standard hearing protectors and the worker's ear. It monitors noise levels and provides feedback or adjustment without requiring custom fabrication of the protectors themselves, thus reducing cost while maintaining effectiveness.
4Reliability
If hearing protectors are worn continuously, then hearing protection effectiveness is improved, but workers cannot hear important sounds when protection is not needed
Solution Approach 1:
The system dynamically adjusts attenuation levels based on real-time noise monitoring. When ambient noise is below safety thresholds, the protectors become transparent or provide minimal attenuation, allowing workers to hear important sounds. When noise exceeds thresholds, protection is automatically activated.
Solution Approach 2:
The attenuation parameter of the hearing protectors is continuously adjusted based on measured sound pressure levels. This allows the system to maintain protection when needed while permitting natural sound transmission when environmental noise is safe, preventing both overexposure and overprotection.
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 device effectively warns users of inadequate protection, reduces noise exposure risks, and promotes responsible hearing protection use by providing real-time feedback and data analysis for behavioral adjustments and environmental awareness.
Implementation Method 1
at least one portable sensor of an ambient sound power attenuated by a protector in a inner ear of the user
Implementation Method 2
two hearing protectors each adapted to attenuate the ambient sound power perceived by an ear of the user
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The invention relates to a portable device (10) for the personal auditive protection of a user, comprising: two auditory protectors (105), each one designed to attenuate the ambient sound power perceived by the ear of the user when it covers the inner ear of the user; at least one portable sensor (110) for detecting an ambient sound power attenuated by a protector in the inner ear of the user; at least one ambient sound power reference (125) non-attenuated by a protector; at least one means (115) for comparing the detected attenuated sound power with the reference sound power in order to detect a sound wave sealing defect of the auditory protector; and at least one signalling means (120) designed to emit a warning signal when the comparison of the detected sound power and the ambient sound power reference exceeds a predetermined threshold value.