Parcourir par tags

Tous les tags » Appareils de mesure (RSS)
Développement d’une antenne microphonique intégrant un système optique pour identifier la position des sources sonores les plus bruyantes en milieu industriel
Dans un contexte industriel, le bruit émis par des machines peut nuire à la santé des travailleurs et générer des problèmes de surdité ou de pertes auditives. Pour pallier ces problèmes, des solutions acoustiques efficaces doivent être mises en place en amont. La première étape d'une étude acoustique de réduction de bruit consiste à localiser la position des sources et à hiérarchiser leurs contributions. Dans un environnement industriel, les travailleurs sont répartis autour...
ISO 8041-1 - Réponse des individus aux vibrations - Appareillage de mesure
Le présent document donne les spécifications de performances et les limites de tolérance pour les instruments destinés à mesurer les valeurs de vibration afin d'évaluer la réponse des individus aux vibrations. Il inclut les exigences relatives aux essais de conformité, ou à la validation, à la vérification périodique et aux contrôles in situ, ainsi que la spécification concernant les calibrateurs de vibration destinés aux contrôles in situ. Les instruments de mesure des vibrations spécifiés...
New NIOSH Sound Level Meter App
Imagine if workers around the world could collect and share workplace (or task-based) noise exposure data using their smartphones. Scientists and occupational safety and health professionals could rely on such shared data to build job exposure databases and promote better hearing health and prevention efforts. In addition, the ability to acquire and display real-time noise exposure data could raises workers' awareness about their work environment and help them make informed decisions about potential hazards to their hearing. Source: https://blogs.cdc.gov/niosh-science-blog/2017/01/17/slm-app...
Assessing High-Noise Areas
Industrial hygienists are challenged to protect employees from noise exposure in all types of work environments, including variable conditions. This project completed a baseline noise assessment at the Dow Northeast Technology Center's mechanical areas. Source: https://ohsonline.com/Articles/2016/05/01/Assessing-High-Noise-Areas
So How Accurate Are These Smartphone Sound Measurement Apps?
As of June 2013, 60% of all mobile subscribers use smartphones—that's more than 140 million devices. Apple iOS and Google Android platforms account for 93% of those devices [Nielsen, 2013]. Smartphone developers now offer many sound measurement applications (apps) using the devices' built-in microphone (or through an external microphone for more sophisticated applications). The use of smartphone sound measurement apps can have a tremendous and far-reaching impact in the areas of noise research and noise control in the workplace as every smartphone can be potentially turned into a...
A multi-component intervention to promote hearing protector use among construction workers
A baseline hearing loss prevention training and a follow-up ‘toolbox’ (TB) reinforcement trainings was reinforced by the use of a personal noise level indicator (NLI). Prior to intervention, HPDs were used an average of 34.5% of the time and increased significantly, up about 12.1% after intervention and 7.5% two months after interventions were completed. The increase in HPD use was greatest among the group receiving both TB and NLI interventions; up about 25% from baseline, and this group was about two times more likely to use HPDs than the BL (baseline) training only group. Source...
Is it necessary to measure Hearing Protectors Attenuation at 4 and 8 khz ?
A Microphone In Real Ear (MIRE) technique specifically designed to measure Hearing Protection Device (HPD) attenuation in the field has been recently made available on a large scale. Some detailed studies of such measurement system, often referred to as “Field-MIRE” or “F-MIRE” systems, have also made clear that the measurement attenuation for the high frequencies (typically in the 2, 4 and 8 kHz Octave Bands) could become surprisingly variable over time, for a same fit of an HPD on a human subject. After thorough investigation, and because the measurement system itself...

Abonnement courriel

Messages récents

Catégories

Mots-Clés (Tags)

Blogoliste

Archives