Thread Links Date Links
Thread Prev Thread Next Thread Index Date Prev Date Next Date Index

FW: Another consideration for communications.



 

Garry,

 

Thanks for the call, and I hope the background information on the UPAMD helped. I believe I failed to bring up an additional consideration that the committee will address in the upcoming communications goal selection task.

 

This new adapter is supposed to replace the next two to three adapters that you would purchase and be used on more than one piece of portable equipment.   This significantly changes the user ROI calculations/considerations.  Pay back is over several pieces of portable equipment possibly over 10+ years. 

 

While some will still chase and argue for the $0.005 cost savings at the device level, as they should, the goal is to save the cost of 3-5 power adapters!  The equipment vendors are probably figuring they will not need to ship adapters  as this standard is completed which saves them direct cost over time.  The adapter becomes an independent product sold on its feature set alone and not that it supports xxxx brand yyyy model built from 20xx to 20xy device.  This is more like the AC power cords and AC power outlet strips with smarts or UPS’s.

 

Startup conditions should probably meet no-spark environments for general safety of the users such as gas stations, vehicles, with hazardous vapor environments, possibly unknown to the user. This would than support S60601-1 for use in hospital/medical equipment as well with safe creepage and clearance requirements. Once connected the power goes up.

 

The communications schema, to be developed by the committee, must be very reliable, expandable, flexible as features are added for customer appeal. While remaining cost effective is always a critical goal, the results must still be sufficient to the current and future communications tasks.   While low bandwidth is needed, reliability is critical.  Blasting the wrong power level due to miscommunication will not be looked on favorably through the expensive smoke. Nasty electrical environments, such as vehicle, industrial, and possibly military/police applications will need to be considered for mission and business critical uses.

 

The input from the members of the working  group suggesting the cable be a symmetrical and detachable,  significantly enhancing the capabilities of the power system,  possibly means that rather than adapter -> device, this should be considered source->load.

 

These issues will, I hope, be considered in the development of the goals for the communications aspect of the project.

 

Thanks for joining, and bringing your expertise, to the group.

 

Respectfully;

 

Bob Davis

UPAMD Chair

bobd@xxxxxxxx

408.857.1273