use of sensors in occupational exposure assessment
TRANSCRIPT
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Use of sensors in occupational
exposure assessment
John Cherrie
Institute of Occupational Medicine, Edinburgh, UK, and Institute of Biological Chemistry, Biophysics and Bioengineering, Heriot-Watt University, Edinburgh, UK
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No conflict of interest to declare
The HEALS project has received funding from the European Union’s Seventh Programme for research, technological development and demonstration under grant agreement No 603946.
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Summary…
• Direct-reading monitoring in the workplace
• Low-cost sensors
• Data management
• Use outside a research study
• Criteria for a good sensor system
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Scopus.com “occupational exposure measurement”
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Scopus.com … plus “biological monitoring” … plus “direct-reading”
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Sensor packages…
https://smartcitizen.me/
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Dylos…
• Dylos DC 1700
• Laser-based particle counter
• 1 min data logging capability more than 6 days
• Quiet
• Mains operated with battery for 6 hours
• Low cost - €300
Semple S, Apsley A, MacCalman L. An inexpensive particle monitor for smoker behaviour modification in homes. Tob Control. 2013 Sep;22(5):295-8.
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Sidepak PM2.5 = 0.65 + 4.16 x 10-5[Dylos particles] + 1.57x10-11[Dylos particles]2
r2 =0.86
(n=25,301)
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Activity…
• Data-logging activity monitors
– Fitbit
– Actigraph, etc.
• Latest versions measure
steps (distance), heart rate,
stairs climbed
• Day-time and night (sleep)
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Location…• Advantage of Moves
is it’s ability to identify
locations and activity
and summarise the
data
• However…
– Need your phone
with you
– Activity data biased
http://www.moves-app.com
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Time
Example: Moves v Paper log
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The technology is changing very fast
Will employers adopt these
technologies?
What about data security / privacy issues?
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Criteria for a useful sensor…
• Unobtrusive
• Low-cost
• Able to collect, store and transmit real-time and
high temporal resolution data
• Usable by workers
• Meets specified QA criteria, e.g. sensitivity,
specificity, accuracy, precision and stability
• Low failure rate