Kippzonen SOLYS 2 Sun Tracker Bedienungsanleitung PDF herunterladen (Seite 57)

9 SOFTWARE OVERVIEW

The software used in the SOLYS 2 contains open source components that are listed in the table below.

This software is available from our website: www.kippzonen.com/suntrackers/SOLYS2/software/download

The software and versions listed below were used during the production of this manual. Look on the website

for the last revision of this list.

Software

Version

License

Apache

httpd-2.2.8

Apache License 2.0

Avahi

avahi-0.6.17

LGPL 2.1

BusyBox

busybox-1.1.3

GPL 2

Expat XML parser

expat-2.0.0

EXPAT License

GNU C Library

glibc-2.3.3

LGPL 2.1 / Licenses for non-FSF code in

GLIBC

GNU Project Debugger

gdb-6.5

GPL 2

GPS Daemon

gpsd-4093 (pre 2.34

+ patches)

GPSD License

Grand Unified Bootloader

grub-0.97-33

GPL 2

Ifplugd

ifplugd-0.28

GPL 2

Libdaemon

libdaemon-0.10

LGPL 2.1

Linux Kernel

linux-2.4.31

GPL 2

LinuxThreads Library

glibc-linuxthreads-

2.3.3

LGPL 2

Ncurses Library

ncurses-5.5

NCURSES License

Network Time Protocol

Daemon

ntp-4.2.2p3-RC

NTP License

OpenSSL (for

configuration data

integrity only)

openssl-0.9.8c

OpenSSL License / SSLeay License

PHP

php-5.2.5

PHP 3.01 License

RT-Linux

rtlinux-3.1

OPEN RTLINUX PATENT LICENSE / GPL 2

SOLYS2 Suntracking

Tools

V1R1

Kipp & Zonen SOLYS License

uClibc

uClibc-0.9.28.3

LGPL 2

Vortex86 watchdog driver

vx86wdt

GPL 2

Watchdog Daemon

watchdog-5.4

GPL 1

Table 7.1

9.1 ALGORITHM

The algorithm the SOLYS 2 is using is a free to use algorithm developed by J.J. Michalsky. (Working for

N.O.A.A.)

One of the inputs for this algorithm is time!

Six out of ten years the time needs to be corrected due to the earth slowing down. This is what we call the

“leap second”

The SOLYS 2 has a built in GPS receiver that constantly synchronizes the internal clock with the satellite clock

(compensating for drift in the RTC (real time clock) as for the equation of time, the correction is also applied

into this algorithm.

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