EME - Antenna - Control - System

  Short description of the features

The system is based on a 80C535 Microcontroller

-

Computation of position (without PC) of moon,sun,Cygnus,Sagittarius,Cassiopeia,Taurus,Leo and Aquarius

Replacing PC, Monitor, Keyboard and Interface:

 

Block - Diagram

Demo - Version of the Controller

Digital position encoders you can get from http://www.usdigital.com . Look for the type A2-S-S, it has 0.1deg resolution and interfaces well to my system.

If you prefer to build yourself, see my suggestions for a 0.5deg absolute encoder at the page : technical stuff .

- Azimuth and elevation motor controlling for all targets plus two free choice positions
- Transmission of antenna position via single wire from antenna down to the controller in the shack
- Interfacing with different position encoders is possible: 9..12bit

a.)absolute (binary, BCD, Gray, Gray-Excess)

b.)incremental (max. 100pulses/sec, reference mark)

- Selectable stepsize for tracking
- Selectable offset for azimuth and elev. up to +/- 9.9 deg
- Relay control output right/left up/down ( 5V each )
- Local operation by 4 buttons at controller, non volatile storage of all parameters

( remote operation by PC is possible)

- Real - Time - Clock
- 4 x 20 character LCD - display
- Audio dB - meter via RS232 and PC, scaling selectable, pictures can be stored to disk. ( See: Signal Plots )
  Main advantages:

PC is not necessary for controlling (no interference!), single wire line from antenna (encoders) into shack, ready within a few seconds

REMOTE PROGRAM FOR WINDOWS (JAN04):

con_oe5jfl.zip  ( 7.5 MB)

( file saving/loading functions not working yet)

 

 

 

HEX - FILES FOR THE CONTROLLER MODULES:

for 27C256 on MODULE2: MOD2_27256.HEX

for 87C51 on MODULE3:   MOD3_87C51.HEX

 

if needed:

for 87C51 on pulseconverter:  PULSCONV.HEX 

  Beside myself the controller is used by

HB9BBD, HB9Q, IK3MAC, OE5EYM and . . .

Marc, ON5RR, took over the job from me assembling kits, modules and also the whole controller. If you are interested, please send me an E-mail: j.fasching@eduhi.at

He has also written a more detailed description: EMEcontr.doc

 

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