Re: Brilliant idea needed!!!
- From: Fred Bloggs <nospam@xxxxxxxxxx>
- Date: Thu, 22 Sep 2005 14:21:17 GMT
Geocacher wrote:
I work in the trailer manufacturing business.
We use LED tail-light clusters.
The modern truck/tractors utilise a computer system to perform diagnostics on various systems within the rig. One of these is the lighting system.
A pulse is sent to each tail light, the system monitoring the current. If there is current flow, it is assumed the incandescent globes are OK.
Unfortunately, the LED lamps draw such a small amount of current that the computer does not see a "filament" and flags a major fault on the truck dashboard. In addition to the error message, the system continues to send curent pulss in the forlorn hope that things at the rear of the rig have improved. This causes the entire suite of LED lamps to flash like a low-class disco!
There are ways around it. Some manufacturers have placed incandescent globes in parallel with the LED lamps, others have used high wattage resistors. Neither is acceptable for obvious reasons.
There must be a way to "tell" the computer that the LED lamps are fine by emulating the current drawn by an incandescent globe, without using the solutions noted above.
Do any of you outstandingly brilliant contributors have any novel and innovative ideas?????
Easily and obviously fixed but how much do you want to pay for the answer????
.
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