So you have daemons that you want to use to *receive* messages from
meteor? I'd have thought you'd be better off with a message queue for
that, check out RabbitMQ (http://www.rabbitmq.com/) or similar.
Meteor is only useful if you want to push data to a web browser.
If you mean you want to have multiple PHP daemons pushing data into
meteor, for onward streaming to web clients, then that's fine - just
have them each connect to the meteor controller server whenever they
want to publish a message. You can have multiple controllers
connected simultaneuously. You can also use the new(ish) UDP server
if your messages are fairly short.
Cheers,
Andrew