HOME Schematics Hobby Corner Dave's Circuits Electronic Resources Book Corner Contact Info

What the World Needs Now --
Bovine Calving Alarm

Previous Issues
This request came to me by way of a dairy farmer in Minnesota.  He has a large number of milk cows and breeds them.  He said he lost a few cows because they had trouble giving birth in the middle of the night.  What could be done to help him? 

The farmer wanted an egg shaped device to be placed in the cow’s virginal area.  Flexible “flapper” arms on the device with low pressure springs would be held against the egg when inserted.  Once inside, the arms would grip the uterine walls.  The device would contain a small battery and an encoded radio transmitter.  When the cow starts giving birth, the egg would be forced out as the calf is pushed through the birth canal.  A switch connected to one of the flapper arms would switch on the radio transmitter.  A nearby box, containing a matching radio receiver, would collect the ID info for the particular cow and send it to the farmer by various means.

Cow Giving Birth                 

The radio receiver could activate a loud audible alarm. It could send a message to the farmer on his cell phone or beeper.  It could send an email message to his computer or a neighbor’s computer.  Armed with this information, the farmer could quickly monitor’s the cow’s progress and could send for a vet if trouble should materialize.

December  2010     Issue 14

Page 1 Back
Good Idea
gone Badly
New Products Rants &
What the World
needs Now
Wily Widget

Imagineering Ezine    Discover Solar Energy Dave Johnson & Associates Faraday Touch Switches

 About Us   |  Advertise on DiscoverCircuits.com   |   Report Broken Links  |    Link to DiscoverCircuits.com  |   
Privacy Policy

Discovercircuits.com endeavors to credit original designers.   Please alert us by eMail so we can
delete links to material that have been copied without your permission
.   Thank you.

© Copyright of all original material on this website is the property
of David A. Johnson, P.E. (Dave Johnson & Associates ) unless otherwise noted.  

Linking is ALLOWED but COPYING any content or graphics to your web site is EXPRESSLY PROHIBITED.
All material is provided "as is" without guarantees or warranty of any kind, either expressed or implied.