Alarm and Sensor Technologies: Difference between revisions
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(Created page with "===Overview of Alarm Technologies=== ====Sensors==== *[Passive Infrared (PIR) This type of sensor is used to protect inside and outside spaces by watching for changes in radiate...") |
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**Is vulnerable to false-alarms or deliberate attempts to set it off | **Is vulnerable to false-alarms or deliberate attempts to set it off | ||
**[http://en.wikipedia.org/wiki/Passive_infrared_sensor Wikipedia article on PIRs] | **[http://en.wikipedia.org/wiki/Passive_infrared_sensor Wikipedia article on PIRs] | ||
**[ | **[http://www.eevblog.com/2012/05/09/eevblog-275-pir-sensor-teardown-tutorial/ EEVblog teardown of a PIR] | ||
Revision as of 11:01, 13 May 2012
Overview of Alarm Technologies
Sensors
- [Passive Infrared (PIR)
This type of sensor is used to protect inside and outside spaces by watching for changes in radiated IR.
- Does a good job of detecting any type of motion by warm bodies
- Inexpensive and widely available
- Is vulnerable to false-alarms or deliberate attempts to set it off
- Wikipedia article on PIRs
- EEVblog teardown of a PIR