need some help for designing a NMEA to gyro (STD 20) course bus converter

Status
Not open for further replies.

hanif

Full Member level 4
Joined
Feb 14, 2007
Messages
218
Helped
44
Reputation
88
Reaction score
32
Trophy points
1,308
Location
Pakistan
Visit site
Activity points
2,519
Hi,

i want to design a miccroncontroler based to NMEA to heading/course bus converter for STD 20 gyro heading/course output. b/c the receiving device (display) is Anschütz (STD 20) course bus compatible.

please follow below link to understand what i want

Aardvark 8 NMEA 0183 to Anschutz STD20 data.
Aardvark

anybody has any information regarding Anschütz (STD 20) course bus like baud rate , data format i.e how heading information presented in it. what i so far understand is this is a type of data transmission of gyro heading/course. i have read its name along with NMEA 0183.

i need this information badly because i a device which is transmitting heading data in this format instead of NMEA and i can't understand it.


PLEASE HELP. i would be very thankful
 

The Anschutz standard 20 gyro – EIVA 121 Binary std. 20 format:

<stx><gyro><chg><mc1><mc2><rot><status><compass><chk><eot>

Hope this info helps.

---------- Post added at 04:07 ---------- Previous post was at 03:21 ----------

Here is a detailed Anschutz standard 20 gyro – EIVA 121 Binary std. 20 format:
 
Reactions: hanif

    hanif

    Points: 2
    Helpful Answer Positive Rating
THANKS SO MUCH,

But if i want to convert the heading/course reading from NMEA 0183 to course bus standard , which byte should i focus?

what i understand from the format , i would like to share with you, please correct me if i am wrong.

The Anschutz standard 20 gyro – EIVA 121 Binary std. 20 format:

<stx><gyro><chg><mc1><mc2><rot><status><compass><c hk><eot>


stx ---> starting byte ,

gyro --> gyro identy code

chg ---> ? (not cleared)

mc1 mc2 ---> magnetic compass 1 & 2 identy code

rot --> rate of turn

status ----> ?

compass ---> value of compass (gyro , mc1, mc2 or rot)

eot --> ending byte

chk ---> check sum
 

Bytes 1 and 2 containing the heading information. While bytes 8, 9 and 10 contain the heading rate in degrees/min (velocity). You'll need to convert the NMEA 0183 information into these parameters. What is the device originating the NMEA data? Does it have a custom NMEA sentence which might already contain this information?
 

Status
Not open for further replies.

Similar threads

Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…