Hearing Protection Device Integrating Push-to-Talk Communication

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Solution Overview

Problem

In noisy environments, individuals wearing hearing protection devices face challenges in communication due to noise interference and the need to carry separate communication devices, which can hinder movement and introduce safety risks.

Innovation Solution

A hearing protection device integrated with Bluetooth-enabled push-to-talk over cellular technology, allowing users to communicate via a mobile device using a low-energy communication protocol, eliminating the need for additional communication devices and enhancing audio quality.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If separate communication devices are carried for push-to-talk functionality, then communication capability is provided, but device complexity and safety risks increase

Engineering Contradiction:
Improvecommunication capabilityVSAvoidnumber of devices
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent combines push-to-talk communication functionality directly into the hearing protection device by integrating a microphone, processor, and speaker. This merging eliminates the need to carry separate communication devices while providing both hearing protection and communication capabilities in a single integrated unit, thereby reducing device complexity and safety risks associated with carrying multiple devices.

Inventive Principle:
Principle #5Merging (Combining)

2Adaptability or versatility

If separate communication devices are carried, then communication functionality is achieved, but ease of operation deteriorates due to cable requirements

Engineering Contradiction:
Improvecommunication functionalityVSAvoidmovement freedom
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

Solution Approach 1:

The patent integrates communication functionality directly into the hearing protection device, eliminating the need for external communication devices and connecting cables. This integration allows users to communicate freely without being constrained by cables, significantly improving ease of operation and movement freedom while maintaining full communication functionality.

Inventive Principle:
Principle #5Merging (Combining)

3Adaptability or versatility

If hearing protection devices provide communication functionality, then versatility improves, but energy consumption increases

Engineering Contradiction:
Improvecommunication functionalityVSAvoidenergy consumption
Core Design Contradiction:
Adaptability or versatilityVSUse of energy by moving object

Solution Approach 1:

The patent employs periodic action by utilizing low-energy communication protocols that transmit data in periodic bursts rather than continuous transmission. The system activates communication functions only when needed (periodic activation) and uses efficient signal processing to minimize energy consumption during transmission, thereby providing communication functionality while managing energy resources effectively.

Inventive Principle:
Principle #19Periodic action

Solution Approach 2:

The patent applies parameter changes by optimizing communication parameters such as transmission power, data rate, and protocol selection to minimize energy consumption. The system dynamically adjusts communication parameters based on operational requirements, using lower power modes when possible and higher power modes only when necessary for clear communication, thus balancing versatility with energy efficiency.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS20230114196A1Hearing protector systems
Publication Date: 2023.04.13 3M INNOVATIVE PROPERTIES CO
  • US20230114196A1 patent drawing
  • US20230114196A1 patent drawing
  • US20230114196A1 patent drawing

AI summary

A hearing protection device is presented. The hearing protection device includes a first hearing protection unit and a second hearing protection unit. Each of the first and second hearing protection units include a microphone that receives ambient sound, a processor that provides level dependent attenuation of the ambient sound, and a speaker that broadcasts the sound into a user's ear. The hearing protection device also includes a first communication unit, which broadcasts a digital push-to-talk signal over a first communication protocol. The first communication protocol is a low energy communication protocol. The hearing protection device also includes a second communication unit, which broadcasts a digital communication signal over a second communication protocol. The hearing protection device also includes a processor that facilitates pairing of the hearing protection device with a mobile device that receives the push-to-talk signal and, based on the push-to-talk signal, receives the digital communication signal and transmits the digital communication signal over a cellular network.