Passive infrared sensors (PIR)
Passive Infrared (PIR) sensors- are small, low powered and cost effective. They sense a change in temperature between the background and a warm heat emitting body. The pyroelectric sensor detects the differing levels of infrared radiation and thus senses movement or presence. Also called presence detectors they might be used within rooms such as offices, cubicles such as in washrooms or on the underside or desks or tables to detect occupancy.
[edit] Related articles on Designing Buildings
- Access control.
- CCTV.
- Commercial security systems.
- Digital door lock market.
- Distributed fibre-optic strain sensors
- Electric motor.
- Electrical energy.
- Electrical power.
- Entry control.
- Home security solutions market.
- How door locks work.
- MEMS and Sensors Market Segments, Size, Emerging Growth Factors, Top Key Players and Business Opportunities till 2027
- Outbuildings security.
- Perimeter security.
- Proximity access control system.
- Security and the built environment.
- Security glazing.
- Types of alarm.
- Types of door.
- Types of lock.
- Types of sensors.
- Ubiquitous sensors to assess energy consumption and wellbeing in domestic environments
- Visitor door entry system.
- Volatile organic compounds VOC
Featured articles
Check out some of the best features and news from Designing Buildings as well as key stories from around the web.
CIOB photography competition is open for entries.
ECA Edmundson apprentice of the year award
Finalists announced.
Major new study exposes serious knowledge gaps.
Generating energy from internal light as well as sunshine.
ECA welcomes plans to strengthen subcontractor quality control.
Combining mid-career qualifications with experience broadens career opportunities.
Why being a mentor can help your career.
Channel 4 broadcaster to host 125th anniversary ceremony.
Listed structures on the rail network
Heritage interests and operational requirements must be balanced.
Historic England publishes research into embodied carbon when retrofitting traditional buildings.
New Prime Minister delivers on ECA call for cut in electricity costs.
CIOB reacts to the announcement of Andy Burnham as Prime Minister.