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Skyaid notes Nov 17-18 rough
Skycar - - - - -
Park and rides - most can become Skycar park and
flys
- However, some park and rides are
in church parking lots which can not have loud Skycars
Noise equivalencies: jet at 5 mile = Skycar at XXX feet ( I suspect xxx < 999 feet)
Skyaid - - - - -
/Need to update spreadsheet of lives
saved- need more detail
on Strokes & Heart
Attacks
- which were merged in the original computation
Emergency medicine - how many more lives could be saved if there were quicker
response
- We know that faster is better in the case of sudden cardiac arrest, but how many more lives
could be saved in say auto accidents if the EMT crew could arrive 10 minutes more
quickly. - or 1 hour more quickly in some places around the world - rural
US, India, etc.
S curves of adoption of changes (often new technology). Rural US in 1900 had no electricity, telephone or emergency services. Rural US now has electricity and telephone, but still does not have emergency services.
Skyaid Watch - - - - -
Vibrator - not need to be as strong as vibrator for pager on a belt - perhaps just 3 soft pulses per second instead of 40 per second. The wrist is probably more sensitive to vibration that the waist.
Anticipate that some Skyaid Watch owners will be manager of hotel, airport, etc. - and so will make many more emergency calls for others than for himself
Reward good samaritan: give free months or year if save a life of another person. This encourages a person to be a good samaritan, allows us to reward them, and provides excellent marketing information and keeps the people alert to the opportunities to help - do not worry if several Skyaid Watch users all call for emergency aid - allow them to all benefit ( some time cut-off of a few minutes so that not everyone who happens along later can get free months)
Good samaritan might move away from the scene
after sending in a call for help
- can not assume that the Skyaid Watch will continue to broadcast the
location of the victim
Blind - fairly easy to use the voice response system - much be sure to have an option on the Skyaid Watch to have a different type of beep for each different visual display. Perhaps even have an option for the watch to "tell" the time.
Deaf - incoming messages can be converted to text before being sent to
the Skyaid Watch - this service is available for the deaf.
Voice to text conversion even reduces the number of bytes needed ( and thus the
radio traffic). 30 seconds = 4KBytes for the heaviest voice compression
30 seconds = 100 words = 500 characters = approx 0.3KBytes = < 1/10 of the
packet size of the voice message
Sending a message by a person who is deaf is difficult however.
Gunshot trauma - does the heart stop? check with Trauma journals
FDA: investigate if the FDA will be likely to want to regulate the
Skyaid Watch.
Probably no problem with monitoring heart rate for sudden cardiac arrest, but
FDA may have problems if Skyaid Watch is used to confirm that a stroke is in
progress.
Battery consumption initially assumed RF usage about once per month. Now with the voice mail feature the RF usage will be 100X greater. Do not want to have to replace the battery more than once a month. Need to re-estimate consumption to account for number of Voice mail transmissions - receptions will probably not take much power
Minimize battery consumption in the listen mode: perhaps just listen a few seconds until can hear the base station and confirm that nothing is in the Queue then can power off entirely for 50 or 100 seconds - thus conserving a lot of battery power
Skyaid Watch Voice mail - - - - -
Meteor burst max packet rate -assume 1000 messages of 4 Kbytes each in 100 seconds in one portion of one sector (= 3 degrees?) and, in addition, 10 emergency messages 20 bytes long
Voice-mail - can send via Net2Phone, etc. - so minimal or no long distance charge for outgoing messages
Demographics and cell-phone usage: how many owners have minimal usage - Something like 30% of the people starting a cell-phone service say that their primary reason was for emergency used check with GURU.COM, etc.
Can cascade outgoing messages together which are longer than 30 seconds- perhaps transparently
Both caller-ID and URLs needed so that recipients can reply needed to Voice-mail messages which are sent
Delivery confirmation should indicate if the call had been received by a person or just by telephone answering machine
Voice-mail only version of the Skyaid Watch - also non-watch versions of voice mail - including cases where there are several mailboxes for the same device - as would be the case for a village of people. Be sure to allow much larger capacity for the device than in the original design. Could have hundreds of voice mail messages each of which might be many minutes long
Voice compression - is it language independent?
Heavy voice compression removes most of the voice personality.
Can voice decompression add some personalization back - after transmission
Want a voice mail option to send a pre-recorded message - e.g. customer CCC, wants air-taxi pickup at location LLL , time TTT ( or current time?), going to destination DDD. Thus not have to speak the same message every time, nor even have to transmit it every time (nor consume the battery every time -which is a way to encourage use by the Skyaid Watch subscribers -since the messages may be generally free otherwise)
50% of the world has never received their first phone call. Will the VoiceMail watch be the first "phone" for many of these people? Since the main cost for the Meteor burst system is the base station, it would be far less expensive than setting up cell systems or perhaps even satellite receivers for all around the world.
VOICEMAILWATCH.COM is this URL available {yes}?
Skyaid Watch RF and base station - - - - -
Priority should be given for short or long emergency messages - not first come first served
3rd generation cell-phone system which is being developed for about 20% of the world population is anticipated to cost $300B (Economist - Oct 2000), approx $150 billion will be for just the RF spectrum rights - unknown cost for new cell stations, cell phones, etc. The voice mail system that we are proposing for 100% of the population will probably cost < $3 billion
Adjust radio frequency transmit level in
accordance with received RF amplitude - this is a spread spectrum
requirement
- but need to see if this is required or even desired with meteor burst - since
meteor burst does not have straight propagation loss and the amplitude changes a
lot even within a second.
Probably can/should assume that the Skyaid Watch has not moved since the last usage. Can delay voice mail delivery for a little while if Skyaid Watch has moved. It will be fairly rare for the Skyaid Watch to move out of a sector - 100X less likely for Skyaid Watch to move from a sector than for a cell phone to move out of a cell sector - which is probably 1,000,000 X smaller in size.
Have satellite as backup communications for the base-station - in case the phone lines all go down to the base station. Of course also have backup power, antennas, transmitters, computers, etc. - probably best to duplicate the entire base station
Ham radio experience - what have they determined to be the worst-case time between meteors, etc. Skyaid Watch will have 100X better functionality with far better signal processing
50MHz RF used by meteor burst communications is Line of Sight
communications
- so it might be blocked by a tall mountain, cliff, or perhaps even a tall and
wide building. - need to investigate
Reception characteristics of 50MHz meteor burst should be fairly similar to
88MHz FM stations
GPS SnapTrack network solution - does it work at long distance as is the case of meteor burst - sent e-mail request 12/15/00
Meteor burst comparison notes moved 11/24/00