Infrared Sensors - Revision history

P0rc0 r0ss0: Redirecting to Sensors/IR

2011-12-18T09:41:57Z

Redirecting to Sensors/IR

← Older revision		Revision as of 03:41, 18 December 2011
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	~~__NOTOC__~~		#REDIRECT [[Sensors/IR]]
	~~__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;"~~
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	~~<h3 style="-moz-border-radius-topleft: 0em;-moz-border-radius-topright: 0.7em;~~
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	[[~~Image:favicon32.png\|32px]] Infrared~~ Sensors
	~~</h3>~~
	~~<div style="padding:6px;">~~
	~~{{Infrared_Sensors}}~~
	</~~div>~~
	~~<!-- Start of right-column -->~~
	~~\| 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"~~
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	\| <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~~]]

P0rc0 r0ss0 at 16:03, 11 December 2011

2011-12-11T16:03:57Z

← Older revision		Revision as of 10:03, 11 December 2011
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	<h3 style="-moz-border-radius-~~topright~~: ~~1em~~;-moz-border-radius-~~topleft~~: ~~1em~~;		<h3 style="-moz-border-radius-topleft: 0em;-moz-border-radius-topright: 0.7em;
	background:#cedff2;margin:-2px;padding:4px;">		background:#cedff2;margin:-2px;padding:4px;">
	[[Image:favicon32.png\|32px]] Infrared Sensors		[[Image:favicon32.png\|32px]] Infrared Sensors

Rufus at 05:53, 11 April 2011

2011-04-11T05:53:05Z

← Older revision		Revision as of 23:53, 10 April 2011
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	The Thermopiles are:		The Thermopiles are:

	Manufacturer Part Number: MLX90247-ESF-DSA ([http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=MLX90247ESF-DSA-ND Digi-Key])		* 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
	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]]		[[Category:Hardware]] [[Category:User_Documentation]]

Rufus at 00:42, 14 March 2011

2011-03-14T00:42:01Z

← Older revision		Revision as of 18:42, 13 March 2011
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	\|}		\|}

	~~Hardware:~~		See also [[Paparazzi_Infrared_Sensors]] for hardware.
	* [[~~Infrared_Double_Small_Sensor_Board~~]]

	== Infrared Stabilization Principle ==		== Infrared Stabilization Principle ==

Rufus at 00:38, 14 March 2011

2011-03-14T00:38:53Z

← Older revision		Revision as of 18:38, 13 March 2011
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	\|}		\|}
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			Hardware:
			* [[Infrared_Double_Small_Sensor_Board]]

	== Infrared Stabilization Principle ==		== Infrared Stabilization Principle ==

Esden at 01:32, 10 March 2011

2011-03-10T01:32:57Z

← Older revision		Revision as of 19:32, 9 March 2011
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	Description: IC SENS THERMOPILE W/THERM TO-39		Description: IC SENS THERMOPILE W/THERM TO-39

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

Aerovista at 05:51, 4 October 2010

2010-10-04T05:51:17Z

← Older revision		Revision as of 23:51, 3 October 2010
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	The Thermopiles are:		The Thermopiles are:

	Manufacturer Part Number: MLX90247-ESF-DSA (~~Digi-Key:~~ [http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail?name=~~MLX90247-ESF~~-DSA-ND ~~MLX90247~~-~~ESF-DSA-ND~~])		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		Description: IC SENS THERMOPILE W/THERM TO-39

Dconger at 22:41, 5 May 2010

2010-05-05T22:41:59Z

← Older revision		Revision as of 16:41, 5 May 2010
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	\| <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, currently in use and future infrared boards.</h2>
	\|-		\|-
	\|[[Image:~~Ppzirsensors~~.jpg~~]]‎~~ Paparazzi ~~x-y IR~~ sensor ~~board~~		\|
			<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>
	\|}		\|}
	\|}		\|}

Jeremy at 04:56, 8 September 2008

2008-09-08T04:56:55Z

← Older revision		Revision as of 22:56, 7 September 2008
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	\|}		\|}

	== Infrared ~~Stabilisation~~ Principle ==		== 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.		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.

Dconger at 22:54, 12 April 2008

2008-04-12T22:54:41Z

← Older revision		Revision as of 16:54, 12 April 2008
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	\| <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, currently in use and future infrared boards.</h2>
	\|-		\|-
	\|[[Image:~~ir_sensor_bot_small~~.jpg\|Paparazzi x-y IR sensor board]]		\|[[Image:Ppzirsensors.jpg]]‎ Paparazzi x-y IR sensor board
	\|}		\|}
	\|}		\|}