Sensors/IR - Revision history

Esden at 00:55, 20 January 2016

2016-01-20T00:55:45Z

← Older revision		Revision as of 18:55, 19 January 2016
Line 9:		Line 9:
	</h3>		</h3>
	<div style="padding:6px;">		<div style="padding:6px;">
	{{~~Infrared_Sensors~~}}		{{:Sensors/IR/Index}}
	</div>		</div>
	<!-- Start of right-column -->		<!-- Start of right-column -->

Esden at 22:43, 5 January 2016

2016-01-05T22:43:59Z

← Older revision		Revision as of 16:43, 5 January 2016
Line 6:		Line 6:
	<h3 style="-moz-border-radius-topleft: 0em;-moz-border-radius-topright: 0.7em;		<h3 style="-moz-border-radius-topleft: 0em;-moz-border-radius-topright: 0.7em;
	background:#fff;margin:0px;padding:4px;border:1px solid #000;">		background:#fff;margin:0px;padding:4px;border:1px solid #000;">
	[[Image:~~Gear~~.png\|32px]] Infrared Sensors		[[Image:Sensor.png\|32px]] Infrared Sensors
	</h3>		</h3>
	<div style="padding:6px;">		<div style="padding:6px;">
Line 15:		Line 15:
	{\|width="100%" cellpadding="0" cellspacing="0" style="vertical-align:top;background-color:#fff"		{\|width="100%" cellpadding="0" cellspacing="0" style="vertical-align:top;background-color:#fff"
	\|-valign="top"		\|-valign="top"
	\| <h2 style="margin:0;background-color:#fff;font-size:120%;font-weight:bold;border:1px solid #000;text-align:left;color:#000;padding:4px;">[[Image:~~Gear~~.png\|32px]]Hardware support for previous and currently in use infrared boards.</h2>		\| <h2 style="margin:0;background-color:#fff;font-size:120%;font-weight:bold;border:1px solid #000;text-align:left;color:#000;padding:4px;">[[Image:Sensor.png\|32px]]Hardware support for previous and currently in use infrared boards.</h2>
	\|-		\|-
	\|		\|

Esden at 22:23, 5 January 2016

2016-01-05T22:23:33Z

← Older revision		Revision as of 16:23, 5 January 2016
Line 1:		Line 1:
	__NOEDITSECTION__		__NOEDITSECTION__

	{\|~~style="border-spacing:8px;margin:0px -8px"~~ class="MainPageBG" style="width:100%;border:~~1px~~ solid #~~9999bf~~;background-color:#~~f5fffa~~;vertical-align:top;color:#000; text-align: left;"		{\|class="MainPageBG" style="width:100%;border:0px solid #000;background-color:#fff;vertical-align:top;color:#000; text-align: left;"
	\|-valign="top"		\|-valign="top"
	\|		\|
	<h3 style="-moz-border-radius-topleft: 0em;-moz-border-radius-topright: 0.7em;		<h3 style="-moz-border-radius-topleft: 0em;-moz-border-radius-topright: 0.7em;
	background:#~~cedff2~~;margin:~~-2px~~;padding:4px;">		background:#fff;margin:0px;padding:4px;border:1px solid #000;">
	[[Image:~~favicon32~~.png\|32px]] Infrared Sensors		[[Image:Gear.png\|32px]] Infrared Sensors
	</h3>		</h3>
	<div style="padding:6px;">		<div style="padding:6px;">
Line 12:		Line 12:
	</div>		</div>
	<!-- Start of right-column -->		<!-- Start of right-column -->
	\| class="MainPageBG" style="width:70%;border:~~1px~~ solid #~~cedff2~~;background-color:#~~f5fffa~~;vertical-align:top"\|		\| class="MainPageBG" style="width:70%;border:0px solid #000;background-color:#fff;vertical-align:top"\|
	{\|width="100%" cellpadding="2" cellspacing="5" style="vertical-align:top;background-color:#~~f5fffa~~"		{\|width="100%" cellpadding="0" cellspacing="0" style="vertical-align:top;background-color:#fff"
	\|-valign="top"		\|-valign="top"
	\| <h2 style="margin:0;background-color:#~~cef2e0~~;font-size:120%;font-weight:bold;border:1px solid #~~a3bfb1~~;text-align:left;color:#000;padding:~~0.2em 0.4em~~;">Hardware support for previous and currently in use infrared boards.</h2>		\| <h2 style="margin:0;background-color:#fff;font-size:120%;font-weight:bold;border:1px solid #000;text-align:left;color:#000;padding:4px;">[[Image:Gear.png\|32px]]Hardware support for previous and currently in use infrared boards.</h2>
	\|-		\|-
	\|		\|

Flixr at 10:46, 25 January 2013

2013-01-25T10:46:25Z

← Older revision		Revision as of 04:46, 25 January 2013
Line 90:		Line 90:
	* [http://www.melexis.com/Asset/IR-Sensor-MLX90247-DataSheet-DownloadLink-4763.aspx data sheet] (Melexis site)		* [http://www.melexis.com/Asset/IR-Sensor-MLX90247-DataSheet-DownloadLink-4763.aspx data sheet] (Melexis site)

	[[Category:Sensors]] [[Category:User_Documentation]]		[[Category:Sensors/IR]] [[Category:User_Documentation]]

Flixr at 16:15, 10 June 2012

2012-06-10T16:15:47Z

← Older revision		Revision as of 10:15, 10 June 2012
Line 15:		Line 15:
	{\|width="100%" cellpadding="2" cellspacing="5" style="vertical-align:top;background-color:#f5fffa"		{\|width="100%" cellpadding="2" cellspacing="5" style="vertical-align:top;background-color:#f5fffa"
	\|-valign="top"		\|-valign="top"
	\| <h2 style="margin:0;background-color:#cef2e0;font-size:120%;font-weight:bold;border:1px solid #a3bfb1;text-align:left;color:#000;padding:0.2em 0.4em;">Hardware support for previous, currently in use ~~and future~~ infrared boards.</h2>		\| <h2 style="margin:0;background-color:#cef2e0;font-size:120%;font-weight:bold;border:1px solid #a3bfb1;text-align:left;color:#000;padding:0.2em 0.4em;">Hardware support for previous and currently in use infrared boards.</h2>
	\|-		\|-
	\|		\|
Line 27:		Line 27:

	<br>		<br>
			<categorytree style="float:right; clear:right; margin-left:1ex; border: 1px solid gray; padding: 0.7ex;" mode=pages>Sensors/IR</categorytree>
	__TOC__		__TOC__

Flixr at 16:13, 10 June 2012

2012-06-10T16:13:23Z

← Older revision		Revision as of 10:13, 10 June 2012
Line 28:		Line 28:
	<br>		<br>
	__TOC__		__TOC__
	~~See also [[Paparazzi_Infrared_Sensors]] for hardware.~~

	== Infrared Theory ==		== Infrared Theory ==

Ghattenb at 11:13, 18 May 2012

2012-05-18T11:13:46Z

@@ Line 1: / Line 1: @@
 __NOEDITSECTION__
@@ Line 27: / Line 26: @@
 |}
 See also [[Paparazzi_Infrared_Sensors]] for hardware.
 == Infrared Stabilization Principle ==

Scdwyer: removed hardware category, as IR is a subcategory of Sensors

2012-03-01T22:56:56Z

removed hardware category, as IR is a subcategory of Sensors

← Older revision		Revision as of 16:56, 1 March 2012
Line 57:		Line 57:
	* [http://www.melexis.com/Asset/IR-Sensor-MLX90247-DataSheet-DownloadLink-4763.aspx data sheet] (Melexis site)		* [http://www.melexis.com/Asset/IR-Sensor-MLX90247-DataSheet-DownloadLink-4763.aspx data sheet] (Melexis site)

	[[Category:~~Hardware~~]] [[Category:User_Documentation]]		[[Category:Sensors]] [[Category:User_Documentation]]

P0rc0 r0ss0 at 09:41, 18 December 2011

2011-12-18T09:41:37Z

New page

__NOTOC__
__NOEDITSECTION__

{|style="border-spacing:8px;margin:0px -8px" class="MainPageBG" style="width:100%;border:1px solid #9999bf;background-color:#f5fffa;vertical-align:top;color:#000; text-align: left;"
|-valign="top"
|
<h3 style="-moz-border-radius-topleft: 0em;-moz-border-radius-topright: 0.7em;
background:#cedff2;margin:-2px;padding:4px;">
[[Image:favicon32.png|32px]] Infrared Sensors
</h3>
<div style="padding:6px;">
{{Infrared_Sensors}}
</div>

| class="MainPageBG" style="width:70%;border:1px solid #cedff2;background-color:#f5fffa;vertical-align:top"|
{|width="100%" cellpadding="2" cellspacing="5" style="vertical-align:top;background-color:#f5fffa"
|-valign="top"
| <h2 style="margin:0;background-color:#cef2e0;font-size:120%;font-weight:bold;border:1px solid #a3bfb1;text-align:left;color:#000;padding:0.2em 0.4em;">Hardware support for previous, currently in use and future infrared boards.</h2>
|-
|
<gallery>
Image:Ir_dual.jpg|IRH early design
Image:Ir_sensor_single_rotated.jpg|IRV early design
Image:Irsensors.jpg|New smaller and slimmer Paparazzi IRH and IRV sensor boards
</gallery>
|}
|}

See also [[Paparazzi_Infrared_Sensors]] for hardware.

== Infrared Stabilization Principle ==
The paparazzi autopilot uses infrared thermopiles for primary attitude sensing. The theory is that at zero bank or pitch angle, the difference in the heat between the two sensors should be zero, and at 90 degrees it should be maximum. From this relationship a linear regression is made and angles are calculated during flight.

[[Image:Infrared_Stabilisation_Principle_tilted.png|400px|Two axis infrared attitude measurement]]

Each pair of sensors measures one axis, a minimum of 2 pairs must be used to measure pitch and roll but best results are obtained thru the use of a 3<sup>rd</sup> pair on the vertical axis. Since the output signal from each sensor pair is proportional to both the attitude and the weather/terrain, systems with only x-y sensors require a ground calibration and may not provide accurate angle calculations as the aircraft travels over terrain with different IR radiation.

[[Image:Infrared_Stabilisation_Principle_tilted_with_Z.png|400px|Three axis infrared attitude measurement]]

== Hardware Architecture ==

=== Horizontal Board ===

[[Image:IR_Sensor_Board_Architecture_dual.jpg]]

=== Vertical Board ===

[[Image:IR_Sensor_Board_Architecture_single.jpg]]

== Thermopiles ==

The Thermopiles are:

* Manufacturer Part Number: MLX90247-ESF-DSA ([http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=MLX90247ESF-DSA-ND Digi-Key])
* Description: IC SENS THERMOPILE W/THERM TO-39
* [http://www.melexis.com/Asset/IR-Sensor-MLX90247-DataSheet-DownloadLink-4763.aspx data sheet] (Melexis site)

[[Category:Hardware]] [[Category:User_Documentation]]