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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) |
Hi, 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. Cheers, Heinrich Felix Ruess schrieb:
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