|From:||Prof. Dr.-Ing. Heinrich Warmers|
|Subject:||Re: [Paparazzi-devel] alt_hold - lisa_m + bmp085|
|Date:||Wed, 20 Mar 2013 07:27:33 +0100|
|User-agent:||Mozilla/5.0 (Windows; U; Windows NT 5.0; de-DE; rv:1.4) Gecko/20030619 Netscape/7.1 (ax)|
the Booz use the idea from the mikrokopter baro system.
It has a analogue filter and a high resolution.
To use the analogue sensors from freescale in combination with analogue filter and a damping material
are the best on multicopters.
I frond with this solutions 24bit SD-ADC analogue filter and the freescale sensors is the best solution.
(like on the HB-Autopilot). I measure a resolution of 3-5cm. !
This kind of solution are also used from the Oliver Meister ( UNI Karlsruhe group) .
He uses the MPXHZ6115A and the AD7787 with an resolution of 0.01Pa (BMP085 1Pa)
The digital sensors have a good accurateness to estimate the altitude 1Pa, but the resolution is relay bad in comparison to other.
Felix Ruess schrieb:
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