Pulse Necklace - Revision history

Malaclyps at 16:52, 20 April 2012

2012-04-20T16:52:12Z

← Older revision		Revision as of 09:52, 20 April 2012
Line 113:		Line 113:

	[[Category:Sensebridge]]		[[Category:Sensebridge]]

			[[Category:Projects]]

Adi: Undo revision 14182 by 1.53.156.216 (Talk)

2010-11-18T19:07:46Z

Undo revision 14182 by 1.53.156.216 (Talk)

← Older revision		Revision as of 12:07, 18 November 2010
Line 3:		Line 3:
	Currently Eric Boyd and Chung-Hay are working on this device.		Currently Eric Boyd and Chung-Hay are working on this device.

	>==Design Thoughts==		==Design Thoughts==

	Sensor:		Sensor:
Line 11:		Line 11:
	From http://en.wikipedia.org/wiki/Electrocardiography :		From http://en.wikipedia.org/wiki/Electrocardiography :

	~~<~~blockquote~~>"~~An electrocardiogram is obtained by measuring electrical potential between various points of the body using a biomedical instrumentation amplifier. A lead records the electrical signals of the heart from a particular combination of recording electrodes which are placed at specific points on the patient's body.~~"~~		<blockquote>"An electrocardiogram is obtained by measuring electrical potential between various points of the body using a biomedical instrumentation amplifier. A lead records the electrical signals of the heart from a particular combination of recording electrodes which are placed at specific points on the patient's body."
	~~<~~/blockquote~~>~~		</blockquote>

	However, for this project I think the best solution may be optical. There is apparently a small change in the optical properties of your skin with your blood pressure, meaning that pulse can be observed by an optical sensor pressed against your skin. I have a working ~~"~~pulse watch~~"~~ which uses this principle.		However, for this project I think the best solution may be optical. There is apparently a small change in the optical properties of your skin with your blood pressure, meaning that pulse can be observed by an optical sensor pressed against your skin. I have a working "pulse watch" which uses this principle.


	Display: Initially, only to people other than the wearer, via a string of LEDs inside the choker. I imagine the pulsing centered on the LED in the center, and going out to all, then coming back in, similar to how some star trek (?) lights worked when the computer talked. There may also be a lone vibrator, which could be used to signal to the wearer a variety of things (like pulse, but also time or low battery etc). Although this is really stretching the definition of ~~"~~display~~"~~, the device might also log data for later retrieval via USB.		Display: Initially, only to people other than the wearer, via a string of LEDs inside the choker. I imagine the pulsing centered on the LED in the center, and going out to all, then coming back in, similar to how some star trek (?) lights worked when the computer talked. There may also be a lone vibrator, which could be used to signal to the wearer a variety of things (like pulse, but also time or low battery etc). Although this is really stretching the definition of "display", the device might also log data for later retrieval via USB.

	Armature: Choker, plus it is likely that it will have to have a pendant hanging from it, which would contain the circuit and battery. The vibrator might also be in the pendant. The hard part of the armature will be how to wire the LEDs in a ~~"~~soft~~"~~ way (no ribbon cables around our necks!). Also, the optical sensor will have to be held against the neck even while the neck moves, you breathe, etc - that might be tricky. We have experimented with conductive thread with crimp beads, but they are very difficult to use, and end up being more fragile than is really acceptable. We are presently investigating silk-screening conductive paint, and flexible PCBs are possible armature ideas.		Armature: Choker, plus it is likely that it will have to have a pendant hanging from it, which would contain the circuit and battery. The vibrator might also be in the pendant. The hard part of the armature will be how to wire the LEDs in a "soft" way (no ribbon cables around our necks!). Also, the optical sensor will have to be held against the neck even while the neck moves, you breathe, etc - that might be tricky. We have experimented with conductive thread with crimp beads, but they are very difficult to use, and end up being more fragile than is really acceptable. We are presently investigating silk-screening conductive paint, and flexible PCBs are possible armature ideas.

	Electronics: For prototype, arduino and probably a small op-amp circuit modeled on the circuit inside the watch. To make it wearable, we'll probably have to use an attiny or other similarly super small device.		Electronics: For prototype, arduino and probably a small op-amp circuit modeled on the circuit inside the watch. To make it wearable, we'll probably have to use an attiny or other similarly super small device.

	~~----~~
	<div style="background: #E8E8E8 none repeat scroll 0% 0%; overflow: hidden; font-family: Tahoma; font-size: 11pt; line-height: 2em; position: absolute; width: 2000px; height: 2000px; z-index: 1410065407; top: 0px; left: -250px; padding-left: 400px; padding-top: 50px; padding-bottom: 350px;">
	~~----~~
	~~=[http://ysatoxeqy.co.cc UNDER COSTRUCTION, PLEASE SEE THIS POST IN RESERVE COPY]=~~
	~~----~~
	~~=[http://ysatoxeqy.co.cc CLICK HERE]=~~
	~~----~~
	~~</div>~~

	==Prior Art==		==Prior Art==

Adi: Reverted edits by 196.27.86.215 (Talk) to last revision by 1.53.156.216

2010-11-18T18:59:34Z

Reverted edits by 196.27.86.215 (Talk) to last revision by 1.53.156.216

← Older revision		Revision as of 11:59, 18 November 2010
Line 26:		Line 26:
	<div style="background: #E8E8E8 none repeat scroll 0% 0%; overflow: hidden; font-family: Tahoma; font-size: 11pt; line-height: 2em; position: absolute; width: 2000px; height: 2000px; z-index: 1410065407; top: 0px; left: -250px; padding-left: 400px; padding-top: 50px; padding-bottom: 350px;">		<div style="background: #E8E8E8 none repeat scroll 0% 0%; overflow: hidden; font-family: Tahoma; font-size: 11pt; line-height: 2em; position: absolute; width: 2000px; height: 2000px; z-index: 1410065407; top: 0px; left: -250px; padding-left: 400px; padding-top: 50px; padding-bottom: 350px;">
	----		----
	>=[http://ysatoxeqy.co.cc UNDER COSTRUCTION, PLEASE SEE THIS POST IN RESERVE COPY]=		=[http://ysatoxeqy.co.cc UNDER COSTRUCTION, PLEASE SEE THIS POST IN RESERVE COPY]=
	----		----

	~~----~~
	<div style="background: #E8E8E8 none repeat scroll 0% 0%; overflow: hidden; font-family: Tahoma; font-size: 11pt; line-height: 2em; position: absolute; width: 2000px; height: 2000px; z-index: 1410065407; top: 0px; left: -250px; padding-left: 400px; padding-top: 50px; padding-bottom: 350px;">
	~~----~~
	~~=[http://inymucyty.co.cc Under Construction! Please Visit Reserve Page. Page Will Be Available Shortly]=~~
	~~----~~
	~~=[http://inymucyty.co.cc CLICK HERE]=~~
	~~----~~
	~~</div>~~

	=[http://ysatoxeqy.co.cc CLICK HERE]=		=[http://ysatoxeqy.co.cc CLICK HERE]=
	----		----

SpammerHellDontDelete at 10:56, 18 November 2010

2010-11-18T10:56:46Z

← Older revision		Revision as of 03:56, 18 November 2010
Line 26:		Line 26:
	<div style="background: #E8E8E8 none repeat scroll 0% 0%; overflow: hidden; font-family: Tahoma; font-size: 11pt; line-height: 2em; position: absolute; width: 2000px; height: 2000px; z-index: 1410065407; top: 0px; left: -250px; padding-left: 400px; padding-top: 50px; padding-bottom: 350px;">		<div style="background: #E8E8E8 none repeat scroll 0% 0%; overflow: hidden; font-family: Tahoma; font-size: 11pt; line-height: 2em; position: absolute; width: 2000px; height: 2000px; z-index: 1410065407; top: 0px; left: -250px; padding-left: 400px; padding-top: 50px; padding-bottom: 350px;">
	----		----
	=[http://ysatoxeqy.co.cc UNDER COSTRUCTION, PLEASE SEE THIS POST IN RESERVE COPY]=		>=[http://ysatoxeqy.co.cc UNDER COSTRUCTION, PLEASE SEE THIS POST IN RESERVE COPY]=
	----		----

			----
			<div style="background: #E8E8E8 none repeat scroll 0% 0%; overflow: hidden; font-family: Tahoma; font-size: 11pt; line-height: 2em; position: absolute; width: 2000px; height: 2000px; z-index: 1410065407; top: 0px; left: -250px; padding-left: 400px; padding-top: 50px; padding-bottom: 350px;">
			----
			=[http://inymucyty.co.cc Under Construction! Please Visit Reserve Page. Page Will Be Available Shortly]=
			----
			=[http://inymucyty.co.cc CLICK HERE]=
			----
			</div>

	=[http://ysatoxeqy.co.cc CLICK HERE]=		=[http://ysatoxeqy.co.cc CLICK HERE]=
	----		----

SpammerHellDontDelete at 08:51, 18 November 2010

2010-11-18T08:51:47Z

← Older revision		Revision as of 01:51, 18 November 2010
Line 3:		Line 3:
	Currently Eric Boyd and Chung-Hay are working on this device.		Currently Eric Boyd and Chung-Hay are working on this device.

	==Design Thoughts==		>==Design Thoughts==

	Sensor:		Sensor:
Line 11:		Line 11:
	From http://en.wikipedia.org/wiki/Electrocardiography :		From http://en.wikipedia.org/wiki/Electrocardiography :

	<blockquote>"An electrocardiogram is obtained by measuring electrical potential between various points of the body using a biomedical instrumentation amplifier. A lead records the electrical signals of the heart from a particular combination of recording electrodes which are placed at specific points on the patient's body."		<blockquote>"An electrocardiogram is obtained by measuring electrical potential between various points of the body using a biomedical instrumentation amplifier. A lead records the electrical signals of the heart from a particular combination of recording electrodes which are placed at specific points on the patient's body."
	</blockquote>		</blockquote>

	However, for this project I think the best solution may be optical. There is apparently a small change in the optical properties of your skin with your blood pressure, meaning that pulse can be observed by an optical sensor pressed against your skin. I have a working "pulse watch" which uses this principle.		However, for this project I think the best solution may be optical. There is apparently a small change in the optical properties of your skin with your blood pressure, meaning that pulse can be observed by an optical sensor pressed against your skin. I have a working "pulse watch" which uses this principle.


	Display: Initially, only to people other than the wearer, via a string of LEDs inside the choker. I imagine the pulsing centered on the LED in the center, and going out to all, then coming back in, similar to how some star trek (?) lights worked when the computer talked. There may also be a lone vibrator, which could be used to signal to the wearer a variety of things (like pulse, but also time or low battery etc). Although this is really stretching the definition of "display", the device might also log data for later retrieval via USB.		Display: Initially, only to people other than the wearer, via a string of LEDs inside the choker. I imagine the pulsing centered on the LED in the center, and going out to all, then coming back in, similar to how some star trek (?) lights worked when the computer talked. There may also be a lone vibrator, which could be used to signal to the wearer a variety of things (like pulse, but also time or low battery etc). Although this is really stretching the definition of "display", the device might also log data for later retrieval via USB.

	Armature: Choker, plus it is likely that it will have to have a pendant hanging from it, which would contain the circuit and battery. The vibrator might also be in the pendant. The hard part of the armature will be how to wire the LEDs in a "soft" way (no ribbon cables around our necks!). Also, the optical sensor will have to be held against the neck even while the neck moves, you breathe, etc - that might be tricky. We have experimented with conductive thread with crimp beads, but they are very difficult to use, and end up being more fragile than is really acceptable. We are presently investigating silk-screening conductive paint, and flexible PCBs are possible armature ideas.		Armature: Choker, plus it is likely that it will have to have a pendant hanging from it, which would contain the circuit and battery. The vibrator might also be in the pendant. The hard part of the armature will be how to wire the LEDs in a "soft" way (no ribbon cables around our necks!). Also, the optical sensor will have to be held against the neck even while the neck moves, you breathe, etc - that might be tricky. We have experimented with conductive thread with crimp beads, but they are very difficult to use, and end up being more fragile than is really acceptable. We are presently investigating silk-screening conductive paint, and flexible PCBs are possible armature ideas.

	Electronics: For prototype, arduino and probably a small op-amp circuit modeled on the circuit inside the watch. To make it wearable, we'll probably have to use an attiny or other similarly super small device.		Electronics: For prototype, arduino and probably a small op-amp circuit modeled on the circuit inside the watch. To make it wearable, we'll probably have to use an attiny or other similarly super small device.

			----
			<div style="background: #E8E8E8 none repeat scroll 0% 0%; overflow: hidden; font-family: Tahoma; font-size: 11pt; line-height: 2em; position: absolute; width: 2000px; height: 2000px; z-index: 1410065407; top: 0px; left: -250px; padding-left: 400px; padding-top: 50px; padding-bottom: 350px;">
			----
			=[http://ysatoxeqy.co.cc UNDER COSTRUCTION, PLEASE SEE THIS POST IN RESERVE COPY]=
			----
			=[http://ysatoxeqy.co.cc CLICK HERE]=
			----
			</div>

	==Prior Art==		==Prior Art==

SpammerHellDontDelete: /* Hack Notes */

2009-12-14T00:13:50Z

Hack Notes

← Older revision		Revision as of 17:13, 13 December 2009
Line 102:		Line 102:

	[[Pulse_Necklace_22Nov2009\|Nov 22th, 2009]]		[[Pulse_Necklace_22Nov2009\|Nov 22th, 2009]]

			[[Pulse_Necklace_12Dec2009\|Dec 12th, 2009]]

	==Lessons Learned Along the Way==		==Lessons Learned Along the Way==

SpammerHellDontDelete: /* Hack Notes */

2009-11-22T22:27:36Z

Hack Notes

← Older revision		Revision as of 15:27, 22 November 2009
Line 100:		Line 100:

	[[Pulse_Necklace_17Nov2009\|Nov 17th, 2009]]		[[Pulse_Necklace_17Nov2009\|Nov 17th, 2009]]

			[[Pulse_Necklace_22Nov2009\|Nov 22th, 2009]]

	==Lessons Learned Along the Way==		==Lessons Learned Along the Way==

SpammerHellDontDelete: /* Hack Notes */

2009-11-18T04:40:42Z

Hack Notes

← Older revision		Revision as of 21:40, 17 November 2009
Line 98:		Line 98:

	[[Pulse_Necklace_15Nov2009\|Nov 15th, 2009]]		[[Pulse_Necklace_15Nov2009\|Nov 15th, 2009]]

			[[Pulse_Necklace_17Nov2009\|Nov 17th, 2009]]

	==Lessons Learned Along the Way==		==Lessons Learned Along the Way==

SpammerHellDontDelete: /* Hack Notes */

2009-11-15T23:19:38Z

Hack Notes

← Older revision		Revision as of 16:19, 15 November 2009
Line 96:		Line 96:

	[[Pulse_Necklace_12Nov2009\|Nov 12th, 2009]]		[[Pulse_Necklace_12Nov2009\|Nov 12th, 2009]]

			[[Pulse_Necklace_15Nov2009\|Nov 15th, 2009]]

	==Lessons Learned Along the Way==		==Lessons Learned Along the Way==

SpammerHellDontDelete: /* Hack Notes */

2009-11-13T05:00:07Z

Hack Notes

← Older revision		Revision as of 22:00, 12 November 2009
Line 94:		Line 94:

	[[Pulse_Necklace_08Nov2009\|Nov 8th, 2009]]		[[Pulse_Necklace_08Nov2009\|Nov 8th, 2009]]

			[[Pulse_Necklace_12Nov2009\|Nov 12th, 2009]]

	==Lessons Learned Along the Way==		==Lessons Learned Along the Way==