The sensor manufacturers aren't really always aware of how destructive a pig can be. Of course, if you're going to put a sensor down low in a trailer along a wall, it better be protected because pigs are bored, they'll start eating away at it and so they've got to be pretty durable.
They've got to be able to take pressure washing, they've got to be able to take chemicals, they've got to be able to take vibrations of going over railway tracks and going down the road and all of those kinds of things. Then you've got a sensor that you want to measure surface temperature maybe down low on a wall but you also want to measure the temperature and humidity, which might be the worst in the head space above the animals.
We can sense all that stuff. It's pretty easy but getting the sensors to do that in a transport trailer that's vibrating down the road and it could be running from minus 40 outside if it's an empty trailer and then be over 100 degrees Celsius in a baking system and then you can't have sensors that cost a lot.
We're on generation five and I think the latest generation has really got some good promise and there's probably going to be continuous development on it. It's the same common problem that we have in automated mining and automated agriculture, is that's sensing, communications, analytics and controls.
Source : Farmscape