Intrusion Motion Sensors Tutorial

Author: Brian Rhodes, Published on Oct 04, 2016

Motion sensors are one of the most common, and most useful alarm sensors, but they also often cause problems. Many motion sensors types exist and their suitability vary across applications. As such, knowing the differences in types and what impacts performance is key.

In this note, we examine:

  • 5 main sensor technology types including PIR, Multi-Tech, Photoelectric, Laser and Tomographic
  • 3 major factors that impact detection areas - detector type, interference tolerance and environmental impacts
  • 4 typical areas where motion detectors are used (offices, warehouses / large indoor areas, residential and perimeters), and which types are best

We address sensor limitations, prices, and more inside.

****** ******* *** *** ** *** **** ******, *** **** useful ***** *******, *** **** **** ***** ***** ********. **** ****** sensors ***** ***** *** ***** *********** **** ****** ************. ** such, knowing *** *********** ** ***** *** **** ******* *********** ** key.

** **** ****, ** *******:

  • * **** ****** ********** ***** ********* ***, *****-****, *************, ***** *** Tomographic
  • * ***** ******* **** ****** ********* ***** - ******** ****, interference ********* *** ************* *******
  • * ******* ***** ***** ****** ********* *** **** (*******, ********** / ***** ****** *****, *********** *** **********), *** ***** ***** are ****

** ******* ****** ***********, ******, *** **** ******.

[***************]

Sensor **** *****

****** ****** ******* *** *** *** ** ******* ******* ** ********* ********. In ***** *****, *** ****** ** ********** ****** ***** *****:

  • ***:******* ***************, *** **** ****** **** ** ****** ******, ******* ******* in *** ***** ** ******** ****** ** *** ***** ****. *** ****** is ********* ** **** ****** ************ ******* ***** ********* ******** an ****** ****** ******* * ********* ****. **** **** **** less **** $**.
  • *****-**** (*******/ *********): ** **** *****, ******* **** **** *** ********* ****** are ***** ** ********* *****. ** ****** ****, **** ****** sensors ****** ******** ********* ********* ***** ********* ** ******* ******* that **** **** ****** ******** ** ***** ** ** ********** triggered ** ** ***** ******. ********* ** ******* ******* **** use ********* ****** ** ***** ***** ** *******, *** *** prone ** ***** ******** ** ***** ***; *** ******* **** PIR ** **** ** **** ******* ******** ********* *********** ** that ****** ****** *****. **** *****-**** ******* **** **** **** $100, ***** *********** ***** ******* **** **** $**.
  • *************: **** ****** '****** ********' *******, ** ******* ****** **** PIRs ** *** **** **** ***** **** *** **** **** emit ** ***********. ** ******* ******* ******** ******* *** ********/********* units, *** **** ******* ******* ******* ** *** ****** ** light ****** ******** ****** **** ** *******. *********, ** ***** range ** ***** **** $* (***** ******) ** $***+ (**** range *******) *** ****.
  • *****: *********** * ****-******* ********* ** ************* *******, ******** ***** sensors **** *** ******* ******* ****** ** ******, **** ** terms ** ***** *** ********. ***** ****** ***** *** ** finely ***** *** ******* ********* *****.  ***** ******* *** *********, usually $*** - $**** *** * ****** ****. 
  • ***********: **** **** ** ****** **** ********* ********* **** * large **** ** ******* ********. ***** ******* **** *** ***** benefit ** ********* ******* ***-******* ***** ******* **** *****, *****, or ******* ****** **** ***** **** ********* **** ******.  ***** ***** ******* **** ** ********* ** * *******, with ***** **** ******** ******* **** $*** - $**** *** room.

Detection ******** ****

*** **** ******** *** *** ***** *********** ******* ** * series ** ******* **** ********* *** ********* **** *******. *** shape *** ******** ** *** ********* **** **** ******* *******, and *** ***** ******** ** **** ***** ******** **** ****:

** *******, *** ********* **** ******* *******:

******** ****: **** ************ ****** * **** ****, ***** ****** **** detect ** * ****** ****. *** ******* * '*****' *** *** detect * ***** ** **** *** *** **** **** **** $20, ******** ** ** ** ***** **** **** *** ****** 3X ** ** **** ********, *** ** * ****** ******* and ** **** *** *****. ****, ** **** *****, *** precision, ***********, *** ************* ** *** ****** ****** ** * key **** ******. ** *******, ***** ********* ***** ** ***** alarms *** ***********, *** ***** ******* **** ************ ********* *****, multiple ********* ************, ** ******** ****** ***** **** ***** ** tomographic *** *** **** *********.

************ *********:*** **** ***** ** *******, ****** ******* ** ***** ** heat *** ****** ****** ***********. *** *******, **** *** ** ************* ******** ** ****** **** ***** ** **** windows. *******, ****** *********** **** ******* ***** *** ***** ****** alarms. ** ***** ****, **** ****** *** **** ********* ******* may ** ********.

************* *******:**** **** **** *** ********** ******* '******' ** '*******' ***** is *** *** ********* *********** *** ****** ***********. ********* **** humidity, ********** ********, ***********, *** ************* *** ****** ********* ********. For *******, ***** * ** **** ******** *** ** ******** for * **** *********** *****, * ****-**** ***** **** *** have ********* ***** ********* ** *** *******.

**** ***** ********* ** ****, ******** ******** ***** *** ** grouped ** ******* *********** ****. ** ******* *** **** ****** ones *****.

Choosing *** ***** ******

** *** ******** *****, ****** ********* ***** ** ****, ***********, and *********** *** ****** *** ***** *** ********* ** ******:

********** ******* ** *****/****** *****

*** ******* ****** ** ******* *****, **** *** ***** *** best ****** ***** ** *** ***** ($**-$** ****), *** ******* their ******** ************* ** ******** ****** *****, ** ****** ****** space ********* **** *** ******* **. ******, ***** ****** ******** that ***** ******* *** **** ******** **** ******* *****, *** weather, ** ******* *** **** ********* *** ******** ** *************** controlled *** ********* ******.

***** *** ******* ** ********, *** ******* **** *** **** for ******** ******* ******** ** '********* *******' **** ******* ****** on ** *** ********* ** ****** ** *** ****.  ** some *****, *** ******** ** ***** **** ** *** **** room *** ***** ***** ********** ** *****-***** **** ********* ****, *** ****** these ******* ****** ********* *************** *** ** *********.

********** ** ***** ****** *****

**** *********** **** * *** **** ** ***** ****** **** is **** *** ***** *****. ** *** **** ** ******** over * ***** ****, **** * *** ** **** ******** 360 **** *** ***** ******. *******, *** ******** ******* ** using **** ******* *** ***** ** ******* ** ********* ******* that **** ****** ******** ** ********** ******, **** ******** ***** or *******. *** *******, *** ******* ********* ***** *****:

*** **** ****** *** ***** **** *****-********** ***** ** ****** like ****** ** ************** ***** *** ********* **** ********.

**********, *****, ** ******

*** *********** ************, '*** ********' ***** ******* ***. ****** ********** spaces ***** ***** ******* ******* *** *** ******, ****** ****** they ***. '*** ******' ****** ********** ******* *** ***** ** not ******* ****** ** ******** ***** * ******* **** ** detected (**: ** ******), ** ****** *' - *' ** the *****, ***** ******* ********* ****.

******* *** ********* ***** ** ***** '****** ****' ** ***** false ******** ** ****, **** *** *** ** *** '**** security' ****** *** ********** ************ ***** *** ********** ********* ***** or *********** ***** ** * *******.

******** **********

**** ***** ****** ******, ******* **** ********* ***** *** ********** by **** **********. ***** *** ******* **** ** ****** ********** at ********* ******** **** ***** ** ******** ******, ****** **** ***-******* ******* *** ****. ******* ** ***** limitations, **** *** *** ** ** ********* ** *************, *****, or ***********/***** *********.

******* ** *** **** ********* ** ************ *** ********* ** cover, **** ********** *** **** ** **** *** ** ***** detection ******* **********, ********** ***** *****,***** ****, ********* ******* *** *********. 

Video ***********

** **** *****, ****** ******* *** ** ****** ** ***** surveillance ******* ***.  ****** ******* **** *** ********* *** ****** inputs ***** **** ***** ******* **** ********* ** ********** ********* than ****** ********* *****, ********** ** **** **** ******.

******, **** ******* *** ******** **** ********** ****** ********* ** the ****** *******, ** **** ********** **** ** **** ******** illuminators *** ********* ** ******** ** ****** ** '**** ** see' **** ***** ******* ***** ***** **** ****:

** ***** ************, ****** ******* *** ** ******** **** * broad ****, *** **** *** ********** ****** ** *********, *** nearest *** ****** ** '********' ** **** ********. **** ************ are ***** *********** *** **** ***** ** *** *** ** monitoring ****** ****** **** ** *** ****** ******, *** *** approach *** ** **** ********* ** ******** ***** ******* ********** using *** ****** ****** ** ********* **** ** *********** **** with ****** ******* **** **** *** ** *** ****.

** ******* *** ******* ** ****** **** ******** **** + ******* *****. 

 

Comments (10)

Undisclosed #1

10/04/16 02:59pm

**** *** **** ** *** **** ******** ************* ******* *** there? * *** **** **** * ********* *** **** ***** be **** *** *********.

Thumbnail img 1452

Mark McRae

Inaxsys Security Systems | In reply to Undisclosed #1 | 10/04/16 10:29pm

***** **** *** **** ******** *** ********** ************* ******* **** I **** **** ******* **

Thumbnail pp 5

Brian Rhodes

IPVMU Certified | In reply to Undisclosed #1 | 10/05/16 02:40pm

** ******** ** *****,***** ** ******* ********* ********** *********.

Thumbnail patrick hart

Patrick Hart

IPVMU Certified | 10/05/16 02:35am

****-**** ***** **** *** **** ********* ***** ********* ** *** weather.

** *****,

* ***** **** ****** **** ******* ******** *** *****. *** laser ** *** ******** ** ****, **** ** *****. *** laser **** ********* */* *********** **** **** *** *** ***** location ** ** *****. **** ******* *** ******* ** ******** costs.

Brian Anderson

IPVMU Certified | 10/05/16 03:17am

******* *********, ********* ** *** **** *** ** **. **** tech ** *******.

Darryl Howse

IPVMU Certified | In reply to Brian Anderson | 10/05/16 10:05am

*****

* ** **** * *** **** ******* ** *********.

***** **** * ***** ******* **** **** * **** ****.

Thumbnail pp 5

Brian Rhodes

IPVMU Certified | In reply to Darryl Howse | 10/05/16 02:31pm

*** ***, ** **** ******* ******** ** *********:

*** **** ***** / ********* *********** (*********)

********* ** ***** ********

Darryl Howse

IPVMU Certified | 10/05/16 09:46am

****** **** *** ***** ** *********** ** ****** ****** *********? i.e, **** **** *** ******* *****, **** ***** ** **** fresnel **** *** *** ********* ******** ** ** ******?

Thumbnail pp 5

Brian Rhodes

IPVMU Certified | In reply to Darryl Howse | 10/05/16 02:37pm

* **** ********* ** **** ******* ******* *** ****, ******* ** *****:

** **** **** *** ****, ** ********* *********?

Darryl Howse

IPVMU Certified | 10/05/16 07:03pm

****** *****,

** ** ******, *** *** ** **** ** ** *** rural / ********** **** ********* ********.

**** ** **** ******** ** ***** *** *** ** **** are * ***.

**** ** ** ********* * *** *** ******** *** * purpose.

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